Distributed Deadlock Detection: Mobile Device Processes Essay

The increasing utilization of mobile devices for development in application usually emphasizes or breaches customary computing methods. A number of obtainable problem solutions, for instance deadlock prevention and avoidance or leader election, are not fitted to situations where clients and servers equally move without restraint all over the network. The free movement of these applications creates interfaces and new events for distributed algorithms and functions that are customarily of no concern. The basic structures of a number of conventional distributed algorithms depend on suppositions, such as location of information, message transmittal and static network properties. The mobility of clients and servers in mobile device systems undermine these basic assumptions. Merely imposing conventional methods of solving problems into the mobile device systems alters the dynamic character of their environments by enforcing limitations, such as restricting device mobility. In effect, new efficient and effective methods for solving distributed issues are needed affecting mobile device systems. In a number of distributed applications there are complicated links between services and information. Mobile devices usually condense services and information like objects in OO (object oriented) programming, expanding and augmenting information and service link by including movement to information and services. In general, mobile devices such as those engaging consensus, transfer of data and database processing distribution must be each other well coordinated to offer services and information access. The advanced synchronization needed in these mobile device-based applications can result to multifarious, complex deadlock scenarios that must be identified and given solution. Conventional deadlock distribution setups are not successful when device mobility and errors are included to the requirement of deadlock resolution. What is more, because of their assumptions, conventional methods such as edge chasing on the global wait-for graph, are insufficient solutions in a mobile device structure. A solution should be developed to address the customary problem of resolution and deadlock detection for mobile device systems. What is Deadlock Deadlock is formally defined as: â€Å"A set of processes is deadlocked if each process in the set is waiting for an event that only another process in the set can cause. † In other words, deadlocks can happen every time limited resources are being competed by processes and these processes are permitted to obtain and hold a lock to the resource. If a process is waiting for resources, the resources it holds will be inaccessible to other processes. If, therefore, process A waits on a resource held by process B, and process B is waiting on one of the resources held by A, a deadlock is occurring. A system obtaining this condition is practically dead and to resume operating it must resolve the deadlock. According to Tenenbaum (1992), the four conditions obtaining a deadlock are: (1) Mutual exclusion. A resource can only be consigned to precisely one resource; (2) Hold and wait. Processes can hold one resource and can request for more; (3) No preemption. Resources cannot be effectively detached from a process; and (4) Circular wait. A circular sequence of processes is required, each process waiting for a resource held by the subsequent member of the sequence. In dealing with deadlocks, there are also four methods generally applied according to Tenenbaum (1992): ignore, detect, prevent, and avoid. Ignoring the problem presents the simplest way to deal with deadlocks. Detection of a deadlock before it occurs is a method trying to identify and locate deadlocks and resolve them. Avoidance of a deadlock is a method that attempts to find out if a deadlock will take place whenever a resource is requested and respond to the request in a way that avoids the occurrence of the deadlock. Prevention of a deadlock is system structuring in such a way that any of the four conditions that permit the possibility of a deadlock cannot take place. Problems with Mobile Devices in Deadlock Detection Breakdown and movement have to be considered in approaching distributed deadlock detection for a mobile device system. For instance, resources and users in conventional distributed deadlock detection do not move about through the system and each server has information about the site of other points that make up the network. In a mobile device system, devices execute operations by going through the source of information and performing locally to gain advantage of locality of reference. The mobile device and the host server can carry on interacting with other resources in the network. In effect, transactions can be distributed over multiple host servers bypassing the node that set off the transaction. Device movement clearly results in problems for algorithms that rely on information of location. In approaches for distributed deadlock detection such as core server or edge chasing, assumptions of location cannot be precluded as data is centrally collected or structured through a sequence of evaluations and verifications. To be able to detect and resolve distributed deadlocks, the processes must be able to pinpoint the nodes initiating the transaction. In a mobile device system, a device’s movement and operations cannot be traced simply. Hence, the device that set off a transaction is not easy to identify, as well as the secondary devices that are involved indirectly. Assumptions regarding location must be applied if a process is to operate efficiently and effectively in a mobile device system. Approach to Distributed Deadlock Detection in Mobile Device Settings The following assumptions illustrate the approach to distributed deadlock detection in mobile device settings: – All types of mobile devices are detached from the structure of the network, and therefore, they cannot move through the network by bypassing the information of how the nodes are linked. – The configuration of the network is immobile or static when the process starts. Priority transactions or two-stage commit are being utilized in standard deadlock avoidance methods. These systems permit the detection and processing of resolution to make certain that a device will not, of its own, unlock or unblock a resource during the process of detection. This feature is important in preventing shadow deadlock detection. – Only a user device can lock or unblock resources when it is actually present at the same location as the resource it is trying to manipulate. This feature permits host servers to convey the particulars being requested by a user device’s resource to its linked deadlock detection complements. A level of coordination between devices or common resources is present. As the devices execute their tasks, resources can be locked. This indicates that they are made solely to an individual user device. – All through the locking process user devices must communicate with the host server. The host is the final validating authority and can permit or reject access to a resource. Given that the host server can disallow the lock request of a device, a respond is needed. Depending on the device’s task, it could block or wait on the resource or it could resume processing and moving through the system.  The validating authority does not instantaneously block the device, as this would restrict flexibility and restrict the dynamic feature of the mobile device setting. – Devices must inform the host server if devices block on the resource. This permits the server to convey the condition of a device to its deadlock detection complements and reject any further request made by the blocked device. Devices that are blocked cannot unblock until the host authorizes their requests. – Devices must be distinctly recognizable the moment they hold a resource. They can be indentified in the device system at the time of the deadlock detection process. The role of identifying nodes may be made before a user device blocks or at the moment they lock a resource only. Overview of the System The mobile device system employs device-adapted methods that are founded in conventional edge-pushing global wait-for graph systems. Particularly, the distributions of the global wait-for graph into in-house maintained divisions and the introduction of deadlock detection examinations are based by conventional solutions. The three kinds of devices occupying the mobile device system are: User Device.  It is the only device in the system that dynamically executes tasks and locks or uses resources. It represents a device that applies the systems. It has no participation in deadlock resolution and detection; Phantom Device. This device is created by host servers and takes charge for keeping the resources locked by a particular user device, tracking it through the network and for starting the deadlock detection point. It further determines the information collected by detection devices to introduce deadlock resolution and detects and retrieves from errors during the process of deadlock detection. It signifies a part of the global wait-for graph; and, Detection Device. Phantom devices create this device when communicated by the host server that their aimed at device has blocked. They are diminutive, very light mobile devices that are tasked for calling hosts and creating the global wait-for graph and for decoding the deadlock condition. Initiating a Deadlock As user devices accomplish tasks, they may of their own lock resources all over the mobile device system. When user devices are created initially, they are not dynamically tracked by the host servers for deadlock detection purposes. The new devices can move without restraint over the network and use resources. User device tracking is done via environment tokens. Every time a device, therefore, approaches at a host server it must submit a token. This token has no significance to the device, and is only utilized by the host servers to manage the process of deadlock detection. User device tracking operations start at the time a device requests a resource lock. Part of permitting the request process is checking for a phantom device by the host server that is linked with the requesting device. If no shadow is present, one is generated and linked with the user device. The user device’s server token is then finally brought up to date to indicate the presence of the newly generated shadow device. When a shadow device is generated for a user device, it enables the host servers to control the process of deadlock detection. Shadow devices are informed of new device locks by host servers through a classified message. The message contains information on deadlock detection, such as the priority and identifier of the resource locked. When a phantom device is created and linked with a user device, they move together all over the network. This harmonized movement is synchronized by instantaneously routing a user’s shadow once the user transmits a passage request to the host server. Notably, this pairing of devices puts limitations on user devices. A user device cannot execute these actions if its linked shadow device is non-existent: moving, locking, and unlocking. The user is informed of the breakdown and the request must be submitted again. This limitation makes certain that the phantom devices will include the precise condition of the wait-for graph, even if they are postponed at the time of sending. Once a user device requests a lock that is rejected by a host server, it could consider blocking and waiting for the resource to be resolved. If the consideration to block is decided, the user device must notify the host server. Host servers respond to blocking information by notifying the user device’s shadow to permit deadlock data to be verified. If the user has no lock held, a shadow device is not present and cannot be notified. This is acceptable since the user device has no other locks held and it cannot be a participant of a distributed deadlock. The host server notifies shadow devices that their target object has blocked or unblocked via a coded message. Blocking and unblocking activities start the process of deadlock initiation. Once the shadow devices have been informed of a block activity, shadow devices inquire the host server to ascertain who is holding the lock on the target object resource. When the host server transmits information to the device identifier on who is holding the lock, a subsequent inquiry is done to ascertain if the device is remote or local. If the locking device is remote, the shadow device initiates the sequence of distributed deadlock detection. If not, no particular processing is occurring. Distributed Deadlock Detection Phantom devices introduce the deadlock detection sequence by creating detection devices. In the creation process, detection devices are commenced with their parent phantom device’s listing of locked resources and the servers where they are situated. This generation of a committed detection device permits a shadow to search at the same time for deadlocks and accordingly respond to other shadow detectors. When initiated, detector devices visit the locked resources by their aimed at user device. By noting the location of the network of each locked resource, routing of detector devices is speeded up. Each visit of the detector device in a resource, they inquire the host server to ascertain if other devices on that resource are blocked. If there are blocked devices found, their linked shadow device is located by the detector and inquires for their deadlock detection data. The processing happens at the same time for every blocked device on a resource held by an offsite device. The deadlock detection response is a list of recorded deadlock detection data that could include the following: Name of the Device. The distinctive identifier information of the user device; Resource Blocked. The resource that the device is blocked with, that includes the unique name of the resource, the user device that has this resource being locked, the server’s name that holds this resource, and the resource’s priority; Basic Locks. The list of basic locks or resources as held by this device. Relevant data regarding a user device that is blocked on a resource is summarized in each deadlock detection record. This information is included at each resource to the deadlock detection table of the detector since the device is blocked on a resource that is held by the detector’s object target. Because these devices are blocked on a resource that is held by another device, their overall detection table is being held indirectly by that device. The secondary information is applicable because blocked devices cannot act to release resources at the same time waiting for the locked resource by a detector’s object target. At the time a detector device visits every resources that were put in its initial array of locks, it goes back to its initial host server. When it arrives, the detector device notifies its shadow that it has came back and conveys its assembled deadlock table. The shadow device ascertains this table, which depicts the global wait-for graph, to make certain the presence of a deadlock. Shadow devices employ their target user device as a key to deadlock detection. If their target device shows in the table communicated by the detector, the target device is waiting on a resource as held by itself. Apparently a deadlock is present because the target device is blocked and that resource can never be released. Shadow devices perform recovery from breakdowns at the time of a deadlock detection point. Detection of a failure is performed through a running cycle calculation delay. Each shadow device is initialized with a fixed cycle time delay depending on the network type and its features. Shadow devices assume that their detector devices will be able to determine all of the required locks in less than four times the optimum delay cycle. When a detector device does not give a response in the optimal time allowed, the shadow device expects that a failure occurs and creates a new device detector to carry on the process of the failed device. Conclusion The suppositions of conventional distributed deadlock systems prevent them from successful completion in a mobile device setting. A successful detection and resolution of a mobile device distributed deadlocks applies the advantages of the mobile device model. The principal features of the advanced method, in particular, that separate it from the conventional solutions could be: reference locality, structure independence, asynchronous process, unrestricted movement, and fault tolerance. These features are accomplished through an independent platform, mobile device distributed deadlock detection resolution. The devices that use resources in the mobile device system are differentiated from the deadlock detection process. This differentiation generates dedicated devices for deadlock initialization, resolution, and detection. These devices are totally fitted to the features of the mobile device setting and operate together to perform a comprehensive distributed deadlock detection resolution. Mobile device settings demand structure flexibility and tolerance of fault. Integrating these properties and features into a mobile device solution affects overall performance. The features need further developing and messages. Because of the congruent nature of mobile device settings, there is no definite fact that these further messages do significantly affect deadlock detection efficiency and effectiveness. In addition, the insufficiency of comparable device solutions poses comparison and examination non-conclusive.

Cultural context of the play Essay

How does Miller use the character of Alfieri to involve the audience and illustrate the cultural context of the play? Alfieri is used in a multitude of ways by Miller to help the play at various stages. He is a character in the play, which other characters interact with, however, he is displaced somewhat because he comments on the goings on of the play, expands on what has happened to make it clearer to the audience, links scenes together and to a certain extent takes the role of a narrator. The character of Alfieri as a lawyer is wisely chosen. Lawyers at that time were seen as a sign of bad luck as with priests, because they were symbols of the law and â€Å"law has not been a friendly idea since the Greeks were beaten†. This shows that Alfieri does not always bring good news and often brings about the things that people do not want to hear, like when Eddie goes to him and asks what he can do to get rid of Marco and Alfieri tells him that there is nothing he can do. The majority of characters in this play are immigrants who have tried to make a living by living in America so at one point or another they would have wanted to avoid the law. Alfieri being a lawyer also shows us how he is above the other immigrants as they are still uneducated, living lives of hard labour using colloquiums such as â€Å"yiz† which indicates a lack of control or status. However, Alfieri is educated and now has status. The language he uses is so much more formal than that of Beatrice or Eddie. Although Alfieri have status he may not have real respect, just the grudging respect for his status. Others do not see him as one of them , â€Å"see how uneasily they nod to me†. Realistically, Alfieri is the only one of them who has achieved the American Dream, worked his way form poverty to having a good life. Arthur Miller himself was the son of an immigrant and he supported himself through college by working on the docks, so he knew where to come from when writing about the hardships and unreliability of living a life like Eddies. In the area and time that the play is set, the rules of community, the code of honour, is more important than the state laws. Disobeying these unwritten laws and betraying the community could result in ostracization. As with Romeo and Juliet this play features people breaking the family laws, then being suitably punished for it. The issues in this play are ones that have been studied before and will be used again due to the fact that they are still relevant. You will always have people that want to do something that is not against the law but going against traditions in their communities and will often cause them a worse fate then if they were breaking a state law. People can relate to disobeying these community rules. Alfieri’s prologue introduces the play. He sets the scene and tells us a bit about the history and culture of where the play is set, where men where â€Å"justly shot by unjust men†. He also says in his epilogue that people now â€Å"settle for half†¦ we are quite civilized, quite American†. With statements like that you can tell that uncivilized things are going to happen. The opposite of how people are now will come out, the real them. Alfieri also tells us that what we are about to see is not just an ordinary one of his cases, and not simply the â€Å"petty troubles of the poor†. Not only in Alfieri’s prologue does he give us hints to what will happen in the play. Ina act one when Eddie goes to Alfieri and asks what he can do to get Rodolpho out, Alfieri says that Eddie must let go of Catherine and let her live her own life â€Å"because after all -what other way can it end? † he is almost predicting that if Eddies protective behaviour continues then it shall end in a bad way. The epilogue, also delivered by Alfieri helps us to understand things better as well. After all the commotion and high emotions of Eddies death, Alfieri is there, calm and collected as ever and gives us enough of an explanation to get us thinking, but also one that lets us make our own minds up. It offers a sense of rounding off. Alfieri reminds us f why we first liked Eddie, and talks of what a good character he was and how we will all like him far more than Alfieri’s â€Å"sensible clients†. Eddie died because he did what he wanted to and Alfieri can see the strength in this action, however, believes it is â€Å"better to settle for half† in order to survive and for there to be peace. Once again, as in the prologue Alfieri is at ease with us the audience. He is relaxed and allowing himself to be honest, to say what he really thinks. Alfieri comments are almost like what you would do to yourself in your head when analyzing or thinking something over. He is going through his thoughts in an almost soliloquy type way. When I went to see the play A View form a Bridge in the Questors theatre in Ealing the role of Alfieri was show to just as much the boob that he was in the svincter . if your happy and you know it clap your hands (clap clap) alice the camel had 95 humps†¦. ride alice ride du du dum cheesh. Im but a little bit bit bit bit show but a little bit bit bit shame but a little bit bit bit , bit bit bit. Peters pepper picked another pickle bearing pussy pepper raaah!!! Vivadixiesubmarine transmitionplot I think that Alfieri is a very good character to have in the play as he manages to fill in all the gaps where extra explanation is needed, such as after scenes. He also acts as an unofficial scene changer, and marks when time has passed or the setting is different. As well as all of this he also points people in the direction of doing things. If it was not for him telling Eddie that the only way he could get rid of Rodolpho was to phone immigration then he would not of thought of it.

Art in the field Assignment Example | Topics and Well Written Essays - 500 words - 1

Art in the field - Assignment Example Initially designed to serve as a private get-a-away for the family that bought the area, the Hakone Garden was influenced by the family’s visit to Japan and their admiration for the local architecture and landscaping present there. Japanese landscape artists and architects helped to bring their vision to reality while maintaining an air of authenticity for the garden. The garden is set in layers which allow the visitor to experience each different section in leisure and to really absorb their charms. Though the Garden is smaller as compared to other national or specialty parks this works to bring to a picturesque quality to the whole setting and for those who are truly looking to experience the Japanese ‘art’ it is very easy to spend hours just strolling among the landscape. Personally the section which attracted me the most was the Bamboo garden. These tall ‘grass’ are an oddity when compared to the natural forests we are used to; the long and slender stalks reaching up to meet the sky create a very unique world to walk through. There is a strength depicted in the garden where so many bamboos stand together to create a curtain of green and it can be intimidating in a sense. The serenity of the place when combined with this deeper strength creates two layers of meaning to the section and this is why I felt most attracted to it. The Koi pond was a beautiful and the fish in no little way contributed to that. The flashing red of the fish when contrasted with the blue flowing water made for a very eye-catching combination. At the time of my visit, preparations were going on for a wedding to be held in the afternoon. The beautiful backgrounds make for a unique photo shoot, and many people admire the opportunity to indulge in a different culture while celebrating their special days. The garden presents a window into the heritage of the

Relationships Essay Example | Topics and Well Written Essays - 1000 words

Relationships - Essay Example He taught me how to write before I went to school; every day; he would come home and sit with me on a small chair and table next to his huge study desk. At first, I would play around in the room running around and sometimes upsetting him with my toy cars. Most times, he would smile understandingly and after he was done working, I would help him tidy up the room. However, he gradually started insisting I sit still and he would then teach me how to print out letters, words and eventually sentences. At first, I did not like the restrictions involved while he was teaching me, but I gradually got used to them. In addition, when my father wants you to do something, it is easier to do it than resist him since he will inevitably wear you out. This was the first lesson I learned about him that informed most of my interactions and sometimes-even fights with him. I began school at a slightly older age than most of my colleagues, but when the teachers realized I had been homeschooled, they put m e in an accelerated program and I soon caught up with my peers. However, my father’s involvement in my life went beyond academics since he was an ardent sports fan and particularly loved football. Every Sunday, he would take me with him to the local stadium and we would watch the game and cheer his favorite team, which soon become our favorite. Sometimes when he came from work early, we would kick around a ball at the yard outside our house and then I would either join him in his study or watch TV in the den as he worked. One thing that he and I both loved apart from football was reading. He was a voracious reader and his study was filled with hundreds of books from all over the world; I had taken to perusing through some of those as I grew older and when he noticed my interest he bought me several children’s versions which I enjoyed immensely. By the time, I was 13, I had started reading most of the original works in his collection

Marketing foundation Assignment Example | Topics and Well Written Essays - 1000 words

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The effects of entertainment on culture Research Paper

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Reflective Responses Assignment Example | Topics and Well Written Essays - 1500 words

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Week 12 - reflection paper Essay Example | Topics and Well Written Essays - 250 words

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Inter-Organizational Relationships Assignment Example | Topics and Well Written Essays - 3000 words

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Modus Operandi Essay Example for Free

Modus Operandi Essay

Non-orthogonal Multiple Access and Massive MIMO

Non-orthogonal Multiple Access and Massive MIMO Non-orthogonal Multiple Access and Massive MIMO for Improved Spectrum Efficiency To cope with the expected 1000x increase in mobile traffic over the next 10 years, key requirements are making more efficient use of the available frequency spectrum, increasing network speeds and opening-up more of the frequency spectrum for wireless applications. OFDMA used by LTE, etc., is being extended and superposition of signals for multiple users using a new power domain are being investigated as methods for increasing spectrum efficiency. In addition, high-directivity adaptive antennas with 100 or more elements offering good compatibility with higher frequencies, interference suppression, and simultaneous multi-user access are other potential ways to improve spectrum efficiency. This paper examines 5G wireless access systems and outlines non-orthogonal access and MIMO technologies along with some issues to resolve. 1 Introduction Next-generation 5G access systems are being investigated as a solution to the explosive increase (a factor of 1000x compared to 2010) in wireless data traffic forecast for the 2020s and the rapid appearance of various new. Three approaches are being taken towards supporting these huge traffic increases: making more efficient use of available frequencies, increasing network speeds, and opening-up new frequency bands. Making more efficient use of available frequencies is closely related to speeding-up the physical layer for multi-access and wireless access technologies. For example, increases of from 2.5 to 10 times have been proposed as targets for increasing the efficiency of 5G frequencies. Conventional mobile communications systems are moving towards faster digital wireless technologies based on advances in semiconductor devices as described below. The first generation (1G) used Frequency Division Multiple Access (FDMA), the second generation (2G) used Time Division Multiple Access (TDMA), the third generation (3G) is using Code Division Multiple Access (CDMA), and the 3.9G and fourth (4G) generations are using Orthogonal Frequency Division Multiple Access (OFDMA) supporting efficient frequency usage and good resistance to fading. The proposals for 5G systems aim to increase spectrum efficiency even further by speeding-up existing technologies, using newly opened frequency bands, and increasing network density, and support for the expected required conditions is being examined. The non-orthogonal multiple-access (NOMA) and higher-order multiple-input and multiple-output (MIMO) technologies described in this paper require huge processing power to implement these functio ns, which will be difficult to achieve using the performance of conventional semiconductor devices. Rapid developments in CPU processing power are expected to be a key element in deployment of 5G services. This paper describes the principles of each method related to these technologies and the problems to be resolved. 2 Non-orthogonal Multiple Access (NOMA) Multiple access is a basic function of cellular systems, which are usually divided into two types: orthogonal and non-orthogonal. In orthogonal access systems such as TDMA, FDMA, and OFDMA, signals for different users are orthogonal to each other. On the other hand, in non-orthogonal access systems, such as CDMA, TCMA (Trellis Coded Multiple Access), IDMA (Interleave Division Multiple Access), the cross-correlation of signals for different users is not 0. The commonly used NOMA incorporates the above-described non-orthogonal multiple access but this section discusses a specified NOMA implementation for 5G systems. NOMA under discussion for 5G systems has a new extension of the user multiplex domain to improve the spectrum efficiency. Intentionally introducing non-orthogonality aims to increase the spectrum efficiency further. As a result, technologies such as new encodings and an interference canceler are required to correct the non-orthogonality, which has been considered difficult to implement until now. However, development is pushing forward with the expectation of introduction as key 5G technology following recent remarkable improvements in CPU performance. NOMA can be classified into three different user multiplex domains: NOMA with SIC (Successive Interference Canceler)/SOMA (Semi-orthogonal Multiple Access), SCMA (Sparse Code Multiple Access), and IDMA (Interleave Division Multiple Access). In addition to the conventional frequency and time domains, these schemes aim to increase the spectrum efficiency by multiplexing the user in the power domain for NOMA with SIC/SOMA, in the power and code domains for SCMA, and in the code domain for IDMA. The follow sections explain the characteristics and principles of each of these schemes. 2.1 NOMA with SIC/SOMA NOMA with SIC (NOMA hereafter)/SOMA expands the radio resource allocation for the frequency and time domains used by LTE, etc. By superposing multiple user signals using the new power domain, it becomes possible to increase the spectrum efficiency even further and to increase the throughput. The NOMA and SOMA methods both make positive use of power and loss differences by modulation processing and multiplexing. Multiple users in the power domain are superposed at the symbol level. This method uses SIC, turbo code, and Low Density Parity Check Code (LDPC) at the receiver side to separate superposed users. The bit rate per 1 Hz for each user at this time (at superposition coding) is expressed by Eq. (1). User 2 with high channel gain is assigned the lower power P2 and the user with the low channel gain is assigned the higher power P1 to improve the average throughput for all users, resulting in improved spectrum efficiency. Figure 4 shows the throughput characteristics for both NOMA and Orthogonal Multiple Access (OMA) when there is a 20 dB difference in the receiver power levels; NOMA is characterized by an improvement of up to 2 bits/s/Hz compared to OMA. The difference between NOMA and SOMA is the symbol constellation. The post-superposition symbol constellation mappings are divided into NOMA with SIC without Gray- Mapping and SOMA with GrayMapping. Both methods are now being investigated in 3GPP Release13 RAN1 TSG as a Multi User Superposition Transmitter (MUST). For simplicity these methods are commonly both described as NOMA. 2.2 SCMA SCMA is a relatively new wireless multi-access method proposed in . It avoids the QAM symbol mapping used by conventional CDMA coding technologies and implements the binary data by coding it directly into multi-dimensional code words. Figure 5 shows the SCMA encoder block diagram. The figure shows a schematic of the SCMA encoder when there are four physical resources and four codewords in SCMA code book. Each user or layer assigns the binary data output from the FEC encoder directly to the complex codeword (physical resources dimensions) according to the predefined spreading code of the SCMA codebook. Additionally, multi-user connections are implemented by assigning a different unique code book to each user or layer. Table 2 shows an example of a codebook for six users or layers. As shown in Table 2, a message passing algorithm14) is used because the SCMA codebook contains sparse code words to achieve near-optimal detection of multiplexed data without increasing the complexity of pro cessing at the receiver side. 2.3 IDMA IDMA is a multi-access method first proposed and developed in 200015). It has gained popularity as one possible main access method for implementing the Internet of Things (IoT) and Machine to Machine (M2M) connections over 5G. In IoT/M2M communications, there are expected to be a large number of connected terminals sending small numbers of packets and instead of using packet scheduling based on OMA, the NOMA method is being considered be-cause it has good robustness to interference and does not require scheduling. IDMA within NOMA is known to have excellent user discrimination characteristics and a multi-user interference canceler can work effectively by combining an interleaver for each user with low-coding-rate error-correction coding to achieve a higher throughput com-pared to OFDMA. Additionally, IDMA is well suited to low-coding-rate error correction and is considered appropriate for transmitting the large number of multiplexed small-packet signals used by IoT, M2M, etc. After coding, the information bit sequence is rearranged by using a user-specific interleaved pattern to generate the encoded transmission bit sequence, which is mapped to the modulation symbols. The IDMA receiver is a parallel-type repeat multi-user receiver composed of a multi-user interference canceler and decoder. 2.4 Issues in Measurement Development As described so far, NOMA now under investigation for 5G has various methods. In particular, since the receiver performance depends directly on the SIC performance for NOMA, SOMA, and IDMA, measuring instruments must have functions for evaluating this performance correctly. However, there is presently no clear generation method for SCMA that includes codebook functions. Whether or not this can be solved either by standardization or by some implementation, development is pushing forward while watching trends in standardization and related technologies. 3.1 MIMO Evolution MIMO achieves high throughput and high reliability by using multiple antennas for transmitter and receiver (Figure 7) and it is a key technology in todays wireless communications systems. Furthermore, IEEE802.11ac and LTE-Advanced have adopted multi-user MIMO for simultaneous communications between base station with multiple antennas and multiple mobile terminals. Currently, Massive-MIMO is being proposed as a new technology for improving MIMO characteristics, targeting the 5G roll out. Massive-MIMO uses up-ward of 100 antenna elements to support simultaneous communications with multiple mobile terminals, greatly improving the spectrum usage efficiency. Figure 8: Massive-MIMO Configuration In addition, use of higher frequency bands, such as the millimeter-wave band is being investigated for 5G. Using the millimeter-wave band, is expected to support ultra-high-speed and large capacity communications using small cells, but transmission losses are big in the higher frequency bands and become bigger especially at non-line-of-sight communications (NLOS). Beam forming (BF) using Massive-MIMO antenna configurations (Figure 8) is thought to be effective in countering these increases in transmission losses. Since the antenna elements can be made small in proportion to the wavelength, the overall antenna size can be reduced even when using 100 or more antenna elements. Moreover, using Massive-MIMO can focus the energy to the mobile as a very tight beam, which not only improves the energy efficiency but is also expected to reduce interference between users. With 5G, in addition to conventional voice and internet services, video streaming, wireless Cloud, and M2M applications will become ubiquitous, requiring good service quality. In addition, these data communications will experience much higher variations in traffic levels with region and time, making it important to be able to accommodate bursts of user traffic in space and time. 3.2 Sub-Array Massive-MIMO In a Massive-MIMO configuration, a DAC is connected to each antenna element to form a digital BF configuration (Figure 9) supporting high-performance BF using digital signal processing. However, since the digital BF configuration requires a large number of high-speed DACs, the power consumption is extremely high. Moreover, using millimeter wave communications with the digital BF configuration widens the signal band, which requires high-speed signal processing. On the other hand, since analog BF using analog elements forms the same beam pattern in all bands, there is a risk that the received power of a user will drop when directing the beam at another user. Consequently, to lower the power consumption for millimeter-wave band communications, a hybrid method that can be implemented using smaller number of DACs has been proposed. This hybrid method combines both the analog and digital methods with send weighting to point beams simultaneously at multiple users; it achieves the same gain as digital BF using the massive configuration for all users. 3.3 Issues in Operation of Higher-Order MIMO Various factors including antenna design affect MIMO communication capacity. To be more precise, the following four factors are considered to cause MIMO communication capacity degradation. Inadequate selection of MIMO channel estimation algorithm Crosstalk between transmitter and receiver circuits MIMO gain reduction affected by Line of Sight (LOS) radio wave Inadequate antenna spacing and multiple reflections inside the housing Besides the above mentioned four points, in order to achieve further improvement of spectrum efficiency by using higher-order MIMO, the performances must be properly evaluated from the aspect of radio wave propagation, antenna and communication system. 4 Summary NOMA and MIMO are technologies for improving the spectrum efficiency for 5G wireless communications. The technologies have large benefits in terms of energy efficiency, spectrum efficiency, robustness, and reliability. Current base stations are both expensive and have poor efficiency at high power levels and there are proposals to replace them with massive combined modules featuring low cost and low power consumption. Achieving this requires solutions to various problems to maximize the potential of the technologies, such as complex antenna unit calculations, separation of analog and digital processing, synchronization of antenna units, etc. Additionally, implementing non-orthogonal access requires focus on increasing the power of devices for mobile terminals. Increasing the performance of semi-conductor devices offers a future chance to build high-speed digital signal processing such as SIC into more mobile terminals. Network Assisted Interference Cancellation and Suppression (NAICS ) using SIC is already being discussed by 3GPP for future introduction, and introduction of non-orthogonal access technologies such as NOMA is being proposed to ex-tend NAICS. Continuing active cooperation between industry and universities is required to solve the problems and assure future commercial roll outs. Anritsu has a wide range of measurement solutions for evaluating complex radio infrastructure and is continuing research in this field.

Inflation :: essays research papers

INFLATION: In the 1970s the prices of most things Americans buy more than doubled. Such a general increase in prices is called inflation. Prices of selected goods may increase for reasons unrelated to inflation: the price of fresh lettuce may rise because unseasonably heavy rainfall in California has ruined the lettuce crop, or the price of gasoline may rise if the oil-producing countries set a higher price for oil. During inflation, however, all prices tend to rise. Over the last 400 years there have been many periods of inflation. In the 16th century, when the Spaniards began bringing back gold and silver from the New World, prices in Western Europe moved upward as the supply of money increased. During the 19th century prices tended to go downward as food and raw materials became cheaper. After major wars such as the Napoleonic Wars and World Wars I and II, prices again moved upward. In the 1950s and '60s a so-called creeping inflation occurred, when the general price level in the United States and Western Europe rose by an average of 1 to 5 percent each year. In the 1970s inflation increased until it reached as much as 13 percent a year in the United States. Many countries have suffered from inflation more than has the United States. Israel had inflation of more than 100 percent a year in the early 1980s, meaning that the cost of living more than doubled every year. In Argentina inflation was greater than 400 percent in 1975 and averaged more than 100 percent each year from 1976 to 1982. The most remarkable inflation in modern times was the German hyperinflation of 1923, when people went to the store with wheelbarrows full of money to buy a few groceries. A similar hyperinflation occurred in Hungary after World War II. Inflation has been defined as "too much money chasing too few goods." As prices rise, wages and salaries also have a tendency to rise. More money in people's pockets causes prices to rise still higher so that consumers never quite catch up . Inflation can go on continuously year after year so long as the money supply continues to increase. Continued inflation affects people in diverse ways. Those who live on fixed incomes, or those whose incomes increase very slowly, suffer most from inflation because they are able to buy less and less. Those who lend money when prices are lower may be paid back in dollars of reduced purchasing power.

An Analysis of The End of Something Essay -- End Something

An Analysis of The End of Something  Ã‚   One area of literature emphasized during the Modernist era was the inner struggle of every man. Novels written before the 20th century, such as Moll Flanders and 20,000 Leagues Under the Sea, dealt with external conflict, a conflict the reader could visualize in an action. Along with other writers of Bohemian Paris, Ernest Hemingway moved away from this process and began using outward actions as symbols for the inner conflict dwelling inside the protagonist. Hemingway's short story The End of Something is an example of how trite dialogue and simple descriptions accentuate the mental strife of the character Nick. The story's plot is not complex: Nick and his girlfriend Marjorie are canoeing down a river they once knew as children. Once on the bank of the river, the two of them partake in the same activities but do them in silence. When Marjorie tries to begin a conversation, Nick is not responsive. Marjorie asks Nick if there is a problem, and Nick says he is not in love anymore. Marjorie then leaves, and the story ends with Nick lying down by himself while his friend Bill (who enters the story several sentences after Marjorie leaves) eats a sandwich while looking onto the river. However basic the story's sequence is, Hemingway's literary innovations are dominant within the text. Through experimentation with tempo, language, and plot structure, Hemingway garners an emotional response out of the reader, leaving him shocked that so much content could be captured in so simple a story. Most authors read at a relatively steady rate throughout their story, with dialogue sections running faster than descriptions. Hemingway breaks this conventional nature in The End of Something. The... ...mes up and asks how things went with Nick. Hemingway quickly describes Bill's entrance, but ends the paragraph with "Bill didn't touch him, either." This one line is Hemingway's entire story; Marjorie felt like there was something between the two of them, while Nick wasn't touched. Hemingway re-emphasizes this in the last line of the story, when Bill takes a sandwich and looks at the fishing rods. While Nick is caught up in the moment and sad about what he did, Bill, representing Nick's life, is not moved. The End of Something is a simple story about two youngsters breaking up. Its four-page length would lead some to believe the story to be light and easily something to glance at instead of thoroughly read. However, Hemingway does a wonderful job of turning the four pages about a common occurance into an event that any reader can feel and will never truly end.

Euthanasia and Religion Essay -- Euthanasia Physician Assisted Suicide

Euthanasia and Religion      Ã‚  Ã‚  Ã‚   In the world today, medical technology is so advanced that a terminally ill patient can be kept alive for months or even years - sometimes against the will of the patient. When did suicide become a sin, and who decided that it was? "Opinion polls consistently show a majority of people professing all varieties of faiths support a change in the law for voluntary euthanasia. Even amongst Roman Catholics, more people support euthanasia than oppose (a poll in Scotland showed over 50% support), in spite of the church's opposition" (Religion and the Right to Die 1). And still in the United States assisted suicide is illegal in all but one state, Oregon.    "Official church policies usually oppose euthanasia. The Roman Catholic Church is the largest single funder opposed to euthanasia. It invests more money in its fight against euthanasia than all the combined resources of right to die societies around the world many times over" (R&RD 1).    In today's society, few churches prohibit passive euthanasia - where the patient refuses treatment or medication. The Evangelicals, Islam and the Mormon Church are faiths that restrict any type of euthanasia - passive, active or voluntary and involuntary. The most liberal of faiths Episcopalian, Unitarian, Methodist, Presbyterian and Quakers allow at least individual decision making in the choice for active euthanasia, as do the Hindu and Sikh religions. "Suicide (self-deliverance) is accepted by a number of faiths. There is the Jaina ethic of voluntary death through fasting. It is often thought that the Roman Catholic Church absolutely prohibits suicide, but Catholic theologians have confirmed that the prohibition, whilst being the Vatican's current ... ... would make if I were faced with the issue.    In my opinion, euthanasia is a moral grace to end the pain and suffering of terminal illness.          WORKS CITED Pavon, Father Frank "Brief Reflections on Euthanasia" April 2, 2001   Ã‚  Ã‚   http://www.priestsforlife.org/euthanasia/euthrefl.html.>  Ã‚   1- 8.    Euthanasia: The Internet Encyclopedia of Philosophy, April 2, 2001   Ã‚  Ã‚   http://www.utm.edu/research/iep/e/euthanas.htm.  Ã‚   1-4 Euthanasia. April 1, 2001 http://islam.org/Science/euthanas.htm   Ã‚  Ã‚  Ã‚  Ã‚   1-3.    Euthanasia and Physician Assisted Suicide: "All Sides of the Issue" April 2, 2001   Ã‚  Ã‚   http://www.religioustolerance.org/euthanas.htm.  Ã‚   1-17.    Religion and the Right to Die. March 22, 2001.   Ã‚  Ã‚   http://www.euthanasia.org/religion.html   1-4 Roy, Vance. Personal Interview, April 15, 2001. Via Internet email.

Power Theft Detection

1. INTRODUCTION The automatic meter reading(AMR) system as become a necessity for most suppliers as deregulation, free customer choice and open market competition occur in the energy supply sector. Power line communication has many new service possibilities on the data transferring via power lines without use extra cables. AMR is a very important application in these possibilities due to every user connected each other via modems using power lines. AMR is a technique to facilitate remote readings energy consumption.Improving the electrical power supply to households as a big issue. The government has set a specific goal to raise the distribution rate of electrical power supply, which is now around 70% to 80% to 100%. Power companies are plagued by power theft. PLC will play an important role in placing anti-theft power system. Illegal electricity may be a serious problem in many countries . This problem has been attempted to be resolved by special skills of humans, such as the police special security etc. These method could not give optimum solution due to their impracticalities. Similar essay: Essay About Snatch TheftMeter reading has been applied by humans and some electronics solutions such as optical reading methods, creditable utilization of electrical energy etc. Many chips which can be used for digital energy metering and PLC modems. The problem of illegal usage of electricity must be solved electronically, without any human control. 2. POWER THEFT Electrical power by altering, slowing, resetting, swapping, or disconnecting an electric meter. Theft also may occur by rewiring circuits to avoid an electric meter, or by tapping into another customer’s electrical lines.The fraudster might use devices to program the theft of power only during certain periods of theday or week. A fraudster may rewire their property to illegally use power from cheaper sources of power, or from meters that are billed at lower rates. The fraudster risks electrocution and detection. Field employees of the power company are trained to spot problems that result in persons n ot being billed for all the electricity they use. Computerized billing systems are designed to detect erratic electricity use Fig No 2. 1 3. PLC installATION.Power meters with PLC  modules will be installed near the top of the power polls. Previously, it was enough to install power meters in high places, not in low places such as the house wall, to prevent users from using power illegally by connecting cables, or by using tampered meters. However, by doing so, the homeowners themselves cannot check how much electricity was used. Therefore, PLC  technology was chosen. Meters installed in high places will send data of the used amount to each household through power lines. Homeowners can then check the amount used on the displays installed in each house.This means that the measurement function and the display function of the meters will be separated. [pic] Fig No3. 1 †¢Ã‚  Power theft is prevented by installing  HD-PLC-mounted power meters on a high position on power polls, while the amount of power used in each household can still be checked Each power meter is connected to an optical fiber network, and information of the amount used by each household is sent to the power companies. If the power companies find that a payment is delinquent, they can remotely stop the power supply by controlling the meters through the optical fiber network.In this way,  HD-PLC  and optical fiber networks enable power companies to prevent power theft, and to grasp the actual amount of power consumed by district or by each household in real time, and also to control the amount of power supply. The waste of power can also be reduced, another big advantage. Furthermore, wide spread use of the power meters with  HD-PLC  modules is expected to reduce regional disparities in information, or the ‘digital divide’. 4 . DETECTION OF ILLEGAL ELECTRICITY USAGE 4. 1 Methods Of Illegal Electricity Usage:In illegal usage, a subscriber illegally use electricity in f ollowing ways: 4. 1. 1 Using the mechanical objects: A subscriber can use some mechanical objects to prevent the revolution of a meter, so that disk speed is reduced and the recorded energy is also reduced. 4. 1. 2 Using a fixed magnet: A subscriber can use a fixed magnet to change the electromagnetic field of the current coils. As is well known , the recorded energy proportional to electromagnetic field. 4. 1. 3. Using the external phase before meter terminals: This method gives subscribers free energy without any record. . 1. 4. Switching the energy cables at the meter connector box: In this way ,the current does not pass through the current coil of the meter, so the meter does not record the energy consumption. Although all of the methods explained above may be valid for electromechanical meters, only the last two methods are valid for digital meters. 5. DESCRIPTION ON PLC Most economically viable technology for transferring Meter data to DCU. Uses the technique of communicating the data over existing Electrical Lines which carry LT power to the site.PLC is a kind of communication technology, which uses Medium Voltage(MV) and Low Voltage(LV) distribution network as the communication media to implement transmission of data, voice and real time image. The components involved in PLC are the; 1. Power Line Carrier Unit which provides signal transmission and reception. 2. There is a Coupler used for â€Å"clamping† around a live wire thus injecting the communication signals into the power line. 3. PLC modem 5. 1 The monitoring system mainly has the following functions: 1. Remote meter-reading 2. Data acquisition 3. Thread PLC transmissions are synchronized to the zero crossing point of the AC power line. It should be transmitted as close to the zero crossing point i. e. within 200 ? s. Square wave with a max Delay of 100 ? s from the zero crossing point The maximum delay between signal envelope input and 120KHz output bursts is 50 ? s. Therefore, it shoul d be arranged that outputs to the within 50 ? s. 5. 2 CODE TRANSMISSION: A Binary 1 is represented by a 1 ms burst of 120 KHz the zero crossing point and a Binary 0 by the absence of 120 KHz. Therefore only the 1 ms â€Å"envelope† need be applied to their inputs.These 1 millisecond bursts should actually be transmitted three times to coincide with the zero crossing points of all three phases in a three phase distribution system. 6. DIFFERENT COUPLING UNITS. [pic] 7. DEFINITION ON AMR AMR(AUTOMATIC REMOTE READING) automates the process of measurement through digital communication techniques. Bring â€Å"intelligence† into the revenue cycle and manage it: The revenue cycle includes metering, billing operating, customer and the services. 7. 1 ADVANTAGES: 1. Smart automated process instead of manual work. 2. Accurate information from the network load to optimise maintenance and investments . Customized rates and billing dates. 4. Streamlined high bill investigations. 5. D etection of tampering of Meters. 6. Accurate measurement of transmission losses. 7. Better network performance and cost efficiency. 8. Demand and distribution management. 9. More intelligence to business planning 10. Better company credibility. 8. DETECTION AND CONTROL SYSTEM The proposed control system for the detection of illegal electricity usage is: [pic] FIG. 8. 1 PLC signaling is only valid over the low voltage -220VAC power lines. The system should be applied to every low-voltage distribution network.The system given in fig 7. 1 belongs only one distribution transformer network and should be repeated for every distribution network. Although the proposed system can be used uniquely, it is better to use it with automatic meter reading system. If the AMR system will be used in any network, the host PLC unit and a PLC modem for every subscriber should be contained in this system. In fig7. 1 the host PLC unit and other PLC modems are named PLC1A,†¦. ,PLCNA and are used for AM R. These units provide communication with each other and send the recorded data in kilowatthour meters to the PLC unit.In order to detect illegal usage of electrical energy, a PLC modem and an energy meter chip for every subscriber are added to an existing AMR system. As given in fig1, PLC1B,†¦Ã¢â‚¬ ¦,PLCNB and energy meter chips belong to the detector. The detector PLC’s and energy meters must be placed at the connection point between distribution main lines and subscriber’s line. 8. 1 ADVANTAGE OF THIS SYSTEM : Most economically viable technology for transferring Meter data to DCU. Uses the technique of communicating the data over existing Electrical Lines which carry LT power to the site.Since the connection point is usually in the air or at underground, it is not suitable for anyone to access, such that its control is easy. It is very economical and is reliable solution when it is compared with the economical loss caused by illegal usage. 8. 2 CONDITIONS FOR T HIS DETECTION AND CONTROL: PLC signaling must be in CENELAC standards. CENELAC has formed the standard in which the frequency bands, signaling levels, and procedure are specified. 3-9 khz are restricted for use by electricity suppliers, and 95-148. 5khz are restricted to consumer use. The signal level for the band 95-148. khz is limited as follows. For general use ,the signaling level is limited to 116db µV. 9. DETECTION The recorded data in kilowatt hour meters for every subscriber are sent to host PLC modem via PLC modems which are placed in subscribers locations. On the other hand energy meter chips are located in connection point and read the enrgy in kilowatthours and also send the data to host PLC unit. This proposed detector system as two recorded energy data in host PLC unit, one which comes from the AMR-PLC, and the other which comes from the PLC at the connection points.These two recorded energy data are compared in the host PLC; if there is any difference between two re adings an error signal is generated. This means that there is an illegal electricity usage in the network. After that, the subscriber address and error signal are combined and sent to the central control unit. If it is, requested, a contacter may be included to the system at location to turn off the energy automatically, as in the case of illegal usage 10.. ILLEGAL DETECTOR SYSTEM FOR ONE SUBSCRIBER [pic] Fig No 10. 1 11.SYSTEM SIMULATION AND MODELLING OF THE DETECTION SYSTEM OF ILLEGAL ELECTRICITY USAGE FOR ELECTROMECHANICAL KILOWATTHOUR METERS [pic] Figure 11. 1 A host PLC modem, an energy meter chip and its PLC modem, an electromechanical kilowatthour meter and its PLC modem, and an optical reflector sensor system are loaded at the same phase of the power grid. The energy value at the electromechanical kilowatthour meter is converted to digital data using optical reflector sensor. Disk speed of the kilowatthour meter is couted and obtained data is sent to PLC modem as energy valu e of the kilowatthour meter.At the system model, an illegal load may be connected to the power line before the kilowatthour meter via an S switch. While only a legal load is in the system, two meters are accorded each other to compensate for any error readings. The host PLC unit reads two recorded data coming from metering PLC units. If the S switch is closed ,illegal load is connected to the system. , and therefore two recorded energy values are different from each other. The host PLC unit is generated when it received two different records from the same subscriber. This is the detection of the illegal usage for interested users.In these, the tests, the carrier frequency is selected at 132khz, which is permitted in the CENELAC frequency band. In real application, the AMR system may be designed in all CENELAC bands. The data rate between the host and the other PLC modem is 2400b/s. Data signaling between PLC modems has a protocol which includes a header, address, energy value data, error correction bits, and other serial communication bits such as parity and stop bits. The protocol may also be changed according to the properties of the required system and national power grid architecture.In the digital energy meter system, the recorded energy may be received in the digital form directly using the port of the meter. Therefore, there is no need for an optical reflector system in digital meters. 12. AN OVERVIEW OF THE PROPOSED DETECTOR SYSTEM The proposed detector system is the equipment and procedure for controlling more remote stations from a master control station. It includes PLC modems, energy meters, control logics, and the system software . 12. 1 PLC MODEMS: These used for two way communication to and from the host station and the remotely controlled targets. 12. 2 ENERGY METER AND CONTROL LOGIC:Energy meter includes metering chip, and some circuit element. control and logic units compare and generate the error signal in the illegal usage. 12. 3 SYTEM SOFT WARE: Assembler program for the microcontroller and the operating software for the management of the overall system. Operator software may be downloaded from a PC and should be placed in the main center of the system. 13. AN AMR SYSTEM FOR AN ILLEGAL DETECTOR PERFORMS THE FOLLOWING FUNCTONS: 1) 1Every user has two PLC modems; one is for AMR and the other is used to send the data from second energy meter chip to host PLC modem. ) An energy meter must be connected in the connection box between a home line and main power lines. 3) The host PLC unit must be placed in the distribution transformer and the configuration of the addressing format of PLC signaling must be designed carefully. 4. The host PLC modem and its controller must include two addresses per every user: one is the AMR and the other for the energy meter. These two addresses must be selected sequentially. 5. Operating software must designed for the information of every subscriber in every sub power network: subscriber ident ification number, billing address etc. . The system has two values of energy consumption for every user, so if there is a difference between them an error signal is generated for the illegal user. 7. The proposed equipment is the only one distributed in the power network. So this system should be repeated for all distribution power networks. All host units in each distribution transformer maybe connected only one main center station via phone lines, fibre optic cable or RF links. 14. CONCLUSION A detector system to determine illegal electricity usage via power line communication is designed and proposed.The proposed system is examined in laboratory conditions. Obtained results from this study show that if the AMR and detector system are used together, illegal usage of electricity may detected. The system functions with real-time monitoring users and burden forecast, which uses MV&LV PLC as its transmission media. The system is integrated with power management and burden control. Und er power theft, the relay is switched off isolating the area of power theft from the EB side . LCD display also indicates power theft. Energy regulation does not epresent an obstacle, since PLC service does not affect the power supply and maintains separate accounts from the core utility business. Once this proposed system is tried in real power lines, the distribution losses can be reduced effectively. 15. REFERENCE [1]Hakki Cavdar, †A solution to remote detection of illegal electricity usage via power line communication†, IEEE Trans. Power Delivery,vol. 19,no. 4,Oct 2004. [2] T. Y. Lim and T. W. Chan, â€Å"Experimenting remote kilowatt hour meter through low voltage power lines at dense housing areas†, IEEE Trans. Power Delivery, vol. 17, pp708-711,july 2002. [3] J.Newbury and W. Miller,† Multiprotocol routing for automatic remote using power line carrier systems†, IEEE Trans. Power delivery,vol. 16 pp 1-5,Jan 2001. ABSTARCT Power Line Communication (PLC) presents an interesting and economical solution for automatic meter reading (AMR). If an AMR system via PLC is set in a power delivery system, a detection system for illegal electricity usage may be easily added in the existing PLC network. In the detection system, the second digitally energy meter chip is used and the value of energy is stored. The recorded energy is compared with the value at the main kilowatt-hour meter.In the case of difference between two recorded energy data, in error signal is generated and transmitted via PLC network. The detector and control system is proposed. The architecture of the system and their critical components are given. This report describes a prototype of the detector system for illegal electricity usage using the power lines. ACKNOWLEDGEMENT I am thankful to Prof. Sukumaran P R ,Head of the Department for providing me with the facilities for the seminar. I would also express my sincere gratitude to Mrs. Rajashree Raghavan ,for her guida nce and mere cooperation for preparing and presenting the seminar.Above all I thank all the faculties of the EEE Department and my friends for their moral support and encouragement. CONTENTS 1. INTRODUCTION01 2. WHAT IS POWER THEFT? 02 3. How is PLC installed ? 03 4. DETECTION OF ILLEGAL ELECTRICITY USAGE04 5. DESCRIPTION ON PLC:05 6. DETECTION AND CONTROL SYSTEM07 7. ILLEGAL DETECTOR SYSTEM FOR ONE SUBSCRIBER:10 8. SYSTEM SIMULATION AND MODELLING OF THE DETECTION SYSTEM OF ILLEGAL ELECTRICITY USAGE FOR ELECTROMECHANICAL KILOWATTHOUR METERS11 9. AN OVERVIEW OF THE PROPOSED DETECTOR SYSTEM:13 10. CONCLUSION:15 11. REFERENCE16

A History of How American Culture Lead Us Into Vietnam and Made Us Fight the Way We Did

A History of How American Culture Lead Us Into Vietnam and Made Us Fight the Way We Did, by Loren Baritz, was published by The Johns Hopkins University Press in 1998. It runs to 400 pages in paperback. Baritz has held administrative positions in numerous universities in the United States. He went to the Amherst campus of the University of Massachusetts in the early 1980s as Provost and served as Chancellor for a time in 1982. He is a noted historian and well respected in his field.This book is a different sort of history from the usual in that it deals with the clash of cultures and the differences between those of the United States and those of Vietnam. Baritz shows the mindset of the American leadership, which was instrumental in leading us down the path to a disastrous war that was not winnable from the outset. In three parts Bartitz explains why it was the myths of our invincibility and our belief that a Christian god watched over all of our endeavors which convinced us to contin ue the war.He quotes Herman Melville’s lines concerning the American condition (Baritz 1998 p 26). He paints a portrait of a nation lulled by its own perceptions of righteousness and how apple pie, motherhood and love of Old Glory caused us to think we had the moral right and obligation to foist our system of beliefs on others on the other side of the globe. He shows that the idea of a separate South Vietnam was a total fabrication and had ever had any basis in fact.We intervened in a civil matter between one nation and the egos of our leaders prevented us from admitting it was all a mistake, apologizing and withdrawing with our 58,000 plus dead still alive. We failed to win because we did not understand the mind of the Vietnamese. Baritz says, â€Å"Vietnam finally won its war because it was willing to accept more death than we considered rational,† (325). We had trained a South Vietnamese army to fight like American soldiers, making them totally dependant on American supplies and materials.Therefore, says Baritz, the South Vietnamese were never capable of sustaining the fight on their own. Baritiz’s thesis is that the entire war was doomed from the outset because the American government never understood why the North was fighting or to what lengths they would go to continue the fight. They would never have stopped had we paved the jungle and decimated them. Because of their cultural beliefs the North Vietnamese may not have been capable of stopping. The reunification of their nation was more than a holy war, it was a living, breathing tangible of what they were as a race and a nation.It was imbedded in their psyches that losing was never an option. We never understood that they would fight to the last man standing. In proof of his thesis Baritz says that while our enemy was fighting a war of nerves, using politics and psychology to attack us, along with every other method at their disposal, including the use of women and children, Americ a was lulled, by the idea that this country is the New Camelot, where justice and righteousness are dispensed to all, whether or not they wish to be recipients of our largess.Baritz believes that as the winners of World War II we see ourselves as the champions of democracy, as the New Israel, as God’s chosen. Therefore we believe that with God on our side we are blessed in all of our endeavors. We became the city on a hill (29). We fought the war, Baritz says, in the classic Ugly American way, which is how we conducted foreign policy in Southeast Asia. We did not advise, we commanded, and expected them to obey, for we believed that whether or not they would admit it, all nations wish to be us.Baritz argument is constructed in tiers, giving the read a quick insight into the oriental mind from the first page where he begins by relating the tale of Colonel Chuc who, in 1972, while in a temple in South Vietnam, was given a revelation. â€Å"†¦Colonel Chuc sank into a trance and received a battle plan and a magical sword from the spirit of the Vietnamese general who defeated Kublai Khan's Mongols seven hundred years earlier† (3). That this was effective illustrates just some of the cultural differences between our two countries.Baritz leads the reader through the American administrations from Kennedy to Nixon, and gives insight into the games our bureaucrats played with such figures as the body count of enemy dead. Though Baritz points out that time after time, when government decisions were made there was no follow-up to determine the outcome of those policies, and whether or not they were a success. Still the reader is left with the belief that much of Baritz’s argument, while sound and acceptable, is not as fully documented as it could be.Some of what he has to say seems to be based on well- educated speculation that his ideas are positively the way things occurred during the divisive and disastrous war. His argument that the American p eople had no hatred of the enemy and quickly wearied of the entire operation seems too obvious to dispute, prima facie, yet how is such an assertion proven? It seems to be an assumption. Baritz’s book is an easy and enjoyable read, though scholarly in concept and execution. He appears to be emotionally attached to his subject, but this works in his favor and makes the book more believable.I would think that while this work does not contain all of the nuts and bolts of history, it is still a valuable treatise on the cultural clashes and is gives us a lesson in cultural differences which may have escaped the minds of today’s leadership. Officials in policy-making positions should read this as a matter of course. I believe it was worth my time, and should be used in classrooms. Works Cited Baritz, L. 1998 Backfire: A History of How American Culture Led Us into Vietnam and Made Us Fight the Way We Did Baltimore: The Johns Hopkins University Press

Tadahiro Uesugi

Is an Illustrator and an animator, who works In Japan. He creates intuitive drawings of landscapes, characters, and scenery, using innovative colors and textures. He was born in 1966. HE graduated Setup Mode Seminar of Nagasaki Setup, a school focusing on fashion Illustration. After graduating, he worked as an assistant for Magna artist Juror Attaining for 7 years. He now is a freelance Illustrator, illustrating for magazine, advertisements, book covers, movie posters, and concept art and CD Jackets. He appreciates France, and French artists such as Immobile.As part of his works, he contributed to French Ell, and designed a one-sheet poster for Japanese theatrical release of the French feature film â€Å"Beautiful Dorchester†. He recently won an Annie Award for his work as a concept artist, and a production designer on the stop motion Feature Film â€Å"Coralline†. Not a lot about Glues Is shared to public, but he has been sharing his techniques and step-by-step process es of creating his work on Japanese magazines. It Is not rare that people do not notice that he Is work are computer graphic art. He sees Photos, and his custom brush tool to create his work.Firstly, he draws everything in grayscale with his graphics tablet. Then he changes the image into color by changing each different tones of grey Into a color. When that Is done. He adds texture to the image by overlaying the texture image onto the artwork. He explained In the Interview he did for a magazine, that he Is trying to make his pieces close to reality yet not too realistic and keep some bits abstract. He also talked that at the earlier stage of his career, he was trying to fit the target audience of the magazine and was trying to create a piece that fitted the purpose rather than freely expressing himself.Recently however, the types of Job that he gets got wider In range, so he has much more freedom to work with. â€Å"Before I mainly drew people, but it slowly changed to putting peo ple in sceneries and I started to notice that the people started to become smaller and smaller. On top of that, when I started to become more conscious of the â€Å"light†, the contrast of the screen grew stronger. In a whole the tone became darker. (Jokingly) If I think about it, his might be a bad tendency for Illustrating. His illustrations are very strange in a way that they look like paintings. In addition to toy 2 and most significantly natural. Only few of his pieces use very vibrant colors, so the illustrations give this monochromatic look, but there are still many different colors present. As he studied fashion illustration in the university, his main models are women. So many of the women in the illustrations are seen with high heels, pretty eyelashes and very skinny body. Although he creates so many illustrations, many of his actual artworks are untitled.

Male Perspective of Love in Literature Essay

Compare and contrast the ways writers use form, structure and language to portray the male perspective of love in Shakespeare’s ‘Othello’, Fitzgerald’s ‘The Great Gatsby’ and the Poetry of Robert Browning. The male perspective of love is interesting to look at when looking at different texts in comparison. Although they have been written in different literary movements male characters portray very similar attitudes and reflect the same aspects towards love and relationships. This essay concerns the male perspective of love, however it is important to analyse the factors that cause these interpretations of love that the writers have created for the male characters. For example a reoccurring perspective is the need for dominance over their significant other for example in Shakespeare’s Othello, Othello establishes his dominance over Desdemona by murdering her, similarly in the poetry of Robert Browning his poems ‘My Last Duchess’ and ‘Porphyria’s Lover’ where they also kill their lovers in order to reinforce their male dominance over their partner. In The Great Gatsby Daisy’s partner Tom displays his dominance over Daisy when he abuses her by punching her in the face. The male perspective of love is understood when looking at the theories of causation. As stated one of the most prominent male perspective of love conveys the need and desire to be dominant over their partner. In the Shakespearian play ‘Othello’ set in 16th century Venice looks at the idea of unconditional love despite the fact that Othello and his love Desdemona are from two completely different worlds. Othello is a Moore which refers to the Islamic – Arabic inhabitants of North Africa, whereas Desdemona is a Venetian. Contextually their love for one another would be seen as highly controversial and taboo, however despite Desdemona insists that she marries Othello. ‘To you, preferring you before her father, so much I challenge that I may profess due to the Moor my lord. ’ Here Desdemona recognises that her duty is divided, however her honesty with her father shows how willingly loyal she is. A literary interpretation of Othello’s character would suggest that Othello feels the need to dominate over Desdemona due to his much insecurity as a character, directly associated with the idea that he is not of the Venetian culture. Leavis views that Othello is a ‘weak and stupid character’ that doesn’t understand himself or Desdemona, Othello is an outsider to the Venetian community where as Cassio isn’t, hence his insecurities structure between Cassio and Desdemona when Iago suggests that they are having an affair together. As a result Othello may realise that to maintain his prestige and respect as a soldier he must justify what has been done on him by killing Desdemona. To some extent I do agree more with the analysis that Leavis’ creates as looking within the context of the time although Othello and his achievements have been celebrated he evidently is a cultural and racial outsider. In addition to insecurities that Othello it is also a possibility that Othello is threatened by Desdemona’s sexual nature, as a character she is very flirtatious and friendly with most of Othello’s comrades including his lieutenant Cassio, whom has suspicion of sleeping with his wife. Desdemona’s supposed infidelity and unfaithfulness to her husband has caused her death. In the patriarchal Venetian society, women were told to remain submissive and meek at all times. However, in ‘Othello’, the women express independence, though in private, and Emilia, Desdemona’s maid, presents us with feminist opinions when she warns that â€Å"the ills we do, their ills instruct us so†. Feminist readings of ‘Othello’ suggest that even though women are shown to be submissive, possessions and are even called ‘whores’, when they do express their feelings and disobey their husband, as is the case with Emilia when she tells Othello of the handkerchief and Iago, she is killed. This, similar to what happened to the Duchess and Desdemona, shows that any sign of independence from their husband is unwelcome and they are quickly eliminated. This demonstrates my argument that destruction is caused by the male need to control the womenThis could be seen as a threat to Othello as not only is he a cultural outsider; his wife could be potentially having an affair with another man who is of the culture. Additionally Desdemona is of a higher class status than Othello, which also contribute to his insecurities this links with the novel ‘The Great Gatsby’ by Fitzgerald this text also portrays various conflict issues with class, for example when Daisy proclaims that she would rather be with her unfaithful husband rather than Gatsby. There are some very strong comparisons between Othello and some other texts also for example the poem Porphyria’s Lover and My Last Duchess by Robert Browning presents similar male perspectives of love. Porphyria’s Lover, the Duke and Othello all feel that they are losing control of their significant other and the power in the relationship. Feminist interpretations would suggest that that these characters are somehow threatened by the sexual nature of their partner, they feel that they should be the dominant in the relationship therefore to maintain that level of power they need so they kill their lovers, it would also indicate that the male characters of these texts are highly insecure. For example Desdemona’s sexual identity is a threat to Othello’s status, if he kills Desdemona however he can still maintain his prestige without fear of embarrassment [PEE]. This is also similar to the poem My Last Duchess the duke was also threatened by the sexual nature of his wife [PEE]. There are also some comparisons between Othello and the Great Gatsby; they both have similar conflicting issues with class and status. For instance Desdemona is of higher status than Othello, this also adds to Othello’s insecurities as not only is Desdemona very flirtatious, she is also very wealthy. PEE] Othello is also warned from the beginning of the play by Brabantio, Desdemona’s father to be cautious of her [PEE] Another interpretation made by Bradley who rejects this view and presents an overwhelming positive analysis of Othello whom he sees as relatively blameless for his actions. On the other hand Bradley suggests that it is indeed the manipulative language used by Iago that had caused Othello to develop these insecurities that ultimately lead to his downfall. This theory seems evident in Act 3, Scene 3 also known as ‘the corruption scene’. This is the scene where the initial manipulation begins, Iago begins to manipulate Othello firstly by making that he is someone trustworthy and reliable therefore he forms a friendship with Othello. Iago had been turned down from the role as Othello’s lieutenant which has explained why he may have some resentment towards Othello; however despite this there is no clear indication to why Iago manipulates Othello in such a way. Some people have interpreted this as a homosexual affection that Iago shows for Othello in which he is jealous of the love Desdemona and Othello have for each other, therefore he convinces Othello to ultimately kill her in attempt for a chance with Othello. One such interpretation is that Iago is motivated by jealousy of Othello’s love for Desdemona, and is maddened by a repressed homosexual desire. There is a hint of this in Act 3, Scene 3, as Iago, pledging his loyalty to his general, tells Othello, â€Å"I am your own forever†. Iago’s chosen word’s perhaps express more than soldierly devotion, and possess a distinctly romantic tone not too dissimilar to the language of a marriage vow However in some aspects it would seem clear that Othello has already chosen to kill Desdemona almost out of his own will, nothing that anyone says will make a difference at all. ‘Yet she must die, else she’ll betray more men’. The dialog is full of legalistic language as if Othello has tried her and is now sentencing her. The novel The Great Gatsby is set during the American Jazz Age of the early 1920’s, this was a time jazz music became increasingly popular and played a significant part in wider cultural changes during this period. This was also a time where the American Dream also played an important part in people’s lives; people would immigrate to America in order to achieve this ‘American Dream’. The idea of unrequited love is a prominent theme. Narrated by Nick Carraway the story tells of Jay Gatsby’s quest for Daisy Buchanan, Nick writes from Gatsby’s point of view as he is writing the novel two years after the story actually happens, so much Gatsby’s point of view is the point of view from Nick, although a trustworthy third party he can sometimes also be unreliable. Nick is determined to make himself seem trustworthy, claiming to be â€Å"one of the few honest people that [he has] ever known†. He also claims not to be judgemental, yet he tells Gatsby that â€Å"They’re a rotten crowd†¦. You’re worth the whole damn bunch put together†. This line shows Nick’s judgemental side, proving him to be an untrustworthy narrator. Gatsby’s perspective of love is that in order for him and Daisy to unite he must change, therefore he gained the wealth and prestige in order to win her heart, however Daisy is now married with Tom Buchanan an upper class socialite and had married daisy even though she had promised herself to Gatsby, despite that Tom is unfaithful to her. Like Othello and the protagonists of ‘My Last Duchess’ and ‘Porphyria’s Lover’ Tom Buchanan is also the self-proclaimed ‘alpha-male’ and feels like he too needs to establish his authority over his love interests for example when he strikes Myrtle in the mouth for speaking ill of his and Daisy’s relationship. The Great Gatsby also shows a portrayal of love and money Gatsby gained his wealth illegally by selling alcohol in an era when alcohol was prohibited. Dishonesty becomes his nature, displayed when he tells Nick that he is â€Å"the son of some wealthy people in the Midwest† and lies about being â€Å"brought up in America, but, educated in Oxford†. Daisy’s immorality is also evident when she allows Gatsby to take the blame for her crime, an act that ultimately results in his death. Unlike Othello and the Browning poetry which was written in a much different era to Gatsby, the novel portrays contrasting perspectives of love. Such as going after your lover, and changing yourself rather than trying to change your partner. The Browning poetry was also written in a similar era to Othello, and therefore the correlation between love and dominance are a reoccurring aspect. For example in the poem ‘My Last Duchess’ the poem is one huge monologue to the audience about a Duke talking to a painter about his last Duchess like Othello the female protagonist is portrayed someone of a sexual and flirtatious nature. Ingersoll describes the character of the Duke as a dominating character with strong will and purpose but as a narcissist who has an insecure need to construct a self-important image of himself which could be seen as a similar interpretation to Leavis’ analysis of Othello. The Duke is also portrayed by browning as someone who has complete desire to gain over control over every aspect in his life for example all that remains of the duchess is a painting concealed under a pull curtain, ultimately the duke decided who sees her and who doesn’t, or if she is even showed at all. The duke shows satisfaction in this by almost boasting about how he was able to control this young girl. Tucker argues that not only does the power give him pleasure, but by reducing the Duchess to a painting, he reduces her to something he can understand and in turn, control. The male need to control women by reducing them to ‘art’ is also visible in ‘Othello’ when he asks, â€Å"Was this fair paper, this most goodly book,/ Made to write â€Å"whore† upon? †, referring to Desdemona and her suspected infidelity. The poem ‘Porphyria’s Lover’ also portrays a similar message; this is also a monologue that is violent and abrupt: a working man, the lover of a middle class girl, murders her when she comes to his cottage, strangling her with her hair. At the end of the poem he sits, apparently calmly, with her corpse in some kind of pseudo embrace. Like Gatsby and Othello the protagonist is again threatened by the idea of their significant other having some sort of control over them. Ingersoll believes that â€Å"In his own mad fashion, the Lover has read that text in order to escape being positioned as ‘feminine’ i. e. A loved object to be abandoned again as she may have many times before. He reaffirms her ‘feminine’ position as one too weak to break those ‘vainer ties’ to a world in which he can have no presence. Torn between moments of passionate possession of her and inevitable abandonment or ‘loss’, he has murdered her n order to turn her into a fetishistic object which can never leave†. This also links with Gatsby as they both deal with conflict issues regarding class, however Daisy would never have a relationship with someone that is of a lower class than her, however the female protagonist against all odds rejects this sociological concept and has relations with a man of lower status regardless, however like Othello this causes the male protagonists to become insecure and weak in their relationship, therefore to restore that order they get rid of their loved ones completely. Stuck on conclusion.