Miracle-dz/UniFAR-FTUs huggingface dataset:
Parallel Interference Cancellation Assisted Decision-Directed Channel Estimation for Multi-User OFDM

Multiple reception antenna assisted Space Division Multiple Access (SDMA) techniques designed for wireless Orthogonal Frequency division Multiplexing (OFDM) systems have recently drawn wide interests. These techniques facilitate the implementation of effective multi-user detection algorithms at the receiver. A prerequisite of their operation is the availability of an estimate of the channels’ frequency domain transfer functions. This contribution analyses a recursive Decision-Directed Channel Estimator (DDCE). Our simulation results demonstrate that this channel transfer function estimator is capable of outperforming state-of-the-art transversal filter based DDCEs in terms of the mean-square estimation error in scenarios, where the product of the number of transmit antennas and the number of CIR taps to be estimated per transmit antenna approaches the number of subcarriers hosted by an OFDM symbol.
GAIT CYCLE ANALYSIS AND MECHANICAL DESIGN OF ANKLE FOOT ORTHOSIS TESTBED

Ankle Foot Orthosis (AFO) is a type of ankle brace for providing assistant force support on the patient's ankle. The research was focused on the structure redesigning, gait cycle analysis and Rapid Prototyping-Ankle Foot Orthosis testbed design. It is tried to provide a. new assembling AFO design, so that lower cost along with a standard process are achieved in order to build a customized AFO. The formal AFO structure was an integrated design. The integrated design was separated into three parts, a. customized base, a. function bar and a standard cuff. The customized base was built by rapid-prototyping method. The surface of the patient's ankle was modeled by the 3D scanner and then built by the 3D printer. The function bar worked as a spring. When the patient is walking, the bar could store the energy and release it. In this process, the weight of the patient is transferred to the spring's potential energy and then the energy is transferred as an assistive force. During designing the structure, it has been tried to provide a range of materials and sizes to meet the different needs of patients who need different assistant levels. The Finite Element Analysis (FEA) was completed on several regular materials. There was no way to formulate or calculate the shape of the AFO, since a customized AFO should be based on the certain patient. As a result, the RP-method was only for assistance, and hence, this work focused on providing the guidance for designing an eligible AFO for a certain patient at a certain status. The standard cuff has a range of sizes, and it could be adjusted by the patients at any time.
Network-Coding Based Two-way Relay Communication Using Adaptive Modulation Sheme

In this paper, we propose network-coding based two-way relay communication using adaptive modulation scheme for satisfying relay QoS(Quality of Service) according to channel environment between user and relay. Two-way relay communication is bidirectional cooperative communication that users exchange own signal with help of relay. Network-coding based two-way relay communication can achieve high throughput compared to conventional scheme through reducing time slots. we propose adaptive M-QAM modulation scheme in network-coding based two-way relay communication for satisfying QoS of relay. Simulation result shows that the proposed scheme satisfies goal QoS of system.
Book Review: Building Learning Communities in Cyberspace: Effective Strategies for the Online Classroom

THE LEARNING COMMUNITY IN CYBERSPACE When Teaching and Learning Leave the Classroom Defining and Redefining Community What We Know About Electronic Learning Time and Group Size Managing the Technology BUILDING AN ELECTRONIC LEARNING COMMUNITY Making the Conversion from the Classroom to Cyberspace Building Foundations Promoting Collaborative Learning Transformative Learning Evaluation Lessons Learned and a Look Ahead Resource A: Examples of Course Syllabi Resource B: Glossary of Terms Used in Computer-Mediated stance Education Resource C: Internet Resources for Distance Education.
Center for Intelligent Control Systems

Abstract : This report contains results of research on perceptual systems, multiscale signal and image analysis, intelligent control, learning control of linear and nonlinear systems, computation, communication and distributed computation. It also contains a list of 359 reports. Intelligent Systems, Models of Uncertainty, Learning Concepts, Perceptual Systems Learning Research, Design Methodology, Computation, Communication.
The value of delayed information in tracking with distributed sensor networks

Tracking the movement of objects using multiple sensors (such as tracking vehicles or people using a distributed set of video cameras) is a topic of importance in security and automation applications. A prime consideration in these multi-sensor tracking networks is the timeliness of estimates, as tracking is a time-sensitive task. Current methods for handling delayed observations can be computationally intensive while minimally improving the estimate. This work aims to develop methods for estimating the value of delayed information. The value of observations from a variety of sensor locations at time points in the past are evaluated using the proposed strategy. We derive the relationships and trends that relate the ‘age’ of past sensor data to its marginal contribution toward improving the accuracy of an estimate of the current location of an object. Low-complexity methods for assessing the value of delayed sensor information can impact applications in defense and national security, personal electronics, and financial engineering where timely decisions are paramount.
Electronic Resources: Use and User Behavior

Contents Introduction * Use and Users: Some Theories * Modeling the Users of Information Systems: Some Theories and Methods * Internet: Organization and Searching * The Retrieval Power of Selected Search Engines: How Well Do They Address General Reference Questions and Subject Questions? * Visual Maps of the World Wide Web: Helping the User Find the Way * Search Tactics of Web Users in Searching for Texts, Graphics, Known Items, and Subjects: A Search Simulation Study * Geographic Information Systems * Geographic Information Systems in Library Reference Services: Development and Challenge * Managing Electronic Resources * Managing Reference Services in the Electronic Age: A Competing Values Approach to Effectiveness * Patron Attitudes Toward Computerized and Print Resources: Discussion and Consideration for Reference Service * Index
Abstract of the Development of a Theoretical Basis for Machine Aids for Translation from Hebrew to English.

An algorithm is developed for computing the correct inflected orth_oqraphy of Hebrew words from a grammatical descri.ption of the words. The basis of the algorithm is the context-sensitive, complex-constituent , phrase-structure grammar of Hebrew orthography d eveloped in Chapter III. The orthography of each constituent member is. contained in look-up tables , specific values of which are defined by grammatical · descriptors. The orthography of the stem is computed by inserting the root letters into a computed stem form. A computer program, in flow-chart form, is developed and tested on a set of words selected for their diversity and difficulty. The program is demonstrated to be accurate, simple, and capable of computing the correc t orthography of all Hebrew words defined by the grammar.
Stochastic modeling of yield curve shifts usingfunctional data analysis

This thesis approaches the problem of modeling the multivariate distribution of interest rates by implementing a novel tool of statistics known as functional data analysis (FDA). This is done by viewing yield curve shifts as distinct but continuous stochastic objects defined over a continuum of maturities. Based on these techniques, we provide two stochastic models with different assumptions regarding the temporal dependence of yield curve shifts and compare their performance with empirical data. The study finds that both models replicate the distributions of yield changes with medium- and long-term maturities, whereas none of the models perform satisfactory at the short segment of the yield curve. Both models, however, appear to accurately capture the cross-sectional dependence.
The Ecological Approach to Information Processing

In the beginning was the mainframe computer: a large and somewhat ramshackle collection of boxes joined by wires. Then came the personal computer: a single, small box, which you could fit on your desk. At about the same time came functionalist conceptions of minds as “black boxes”. And much fascination with the idea that the mind is a computer (and even, contrariwise, that the computer is a mind). Now, however, the box conception of computers and minds is slowly losing its grip. Computers are connected together in gigantic networks; they move around; and, through Global Positioning Systems (GPS), they always know where they are. They are attached to digital video cameras and to meteorological and chemical and biological and medical and gamma ray sensors. There are cognitive prostheses; wearable computers; computers you can hold in your hand; computers you can talk through; computers that can display the seismographic features of the terrain they are pointed at; computers that can display the vital signs of a patient you are examining who is a thousand miles away. The European Media Lab in Heidelberg is testing tourism information services built into camera-sized computers which are at one and the same time ever-attentive tour guides, map displays, and cameras. You can point your computer/camera to the castle on the hill and ask it to read out the history of the castle; or display a map showing all non-smoking restaurants within walking distance; or inform you where in the vicinity of the castle you can buy cornflakes after 10 p.m. Computer/camera/sensor devices with even more powerful features are transforming the ways wars are fought and emergencies responded to. They are transforming com-
Perception des participants à un concours créatif

Via la sphere electronique, de nombreuses organisations sollicitent la force creative de la foule comme source de creation de valeur. Il est alors question de cocreation, de marketing participatif ou bien encore de crowdsourcing. Alors que ces concepts s’entrecroisent, c’est plus specifiquement sur le crowdsourcing que notre recherche se porte. Il s’agit pour une organisation d’externaliser vers la foule des activites traditionnellement realisees en interne ou confiees a des prestataires exterieurs. A l’appui d’une methodologie qualitative, notre recherche apprehende la perception des participants a des concours creatifs : comment comprennent-ils le choix d’une marque de recourir a leurs competences? Quel regard portent-ils alors sur la marque? Dans une approche exploratoire, notre recherche se fonde sur le suivi de 40 participants au concours de creation media porte par la marque Kinder Maxi sur la plate-forme eYeka.
The Primacy of Grammar

A proposal that the biolinguistic approach to human languages may have identified, beyond the study of language, a specific structure of the human mind. The contemporary discipline of biolinguistics is beginning to have the feel of scientific inquiry. Biolinguistics-especially the work of Noam Chomsky-suggests that the design of language may be "perfect": language is an optimal solution to conditions of sound and meaning. What is the scope of this inquiry? Which aspect of nature does this science investigate? What is its relation to the rest of science? What notions of language and mind are under investigation? This book is a study of such foundational questions. Exploring Chomsky's claims, Nirmalangshu Mukherji argues that the significance of biolinguistic inquiry extends beyond the domain of language. Biolinguistics is primarily concerned with grammars that represent just the computational aspects of the mind/brain. This restriction to grammars, Mukherji argues, opens the possibility that the computational system of human language may be involved in each cognitive system that requires similar computational resources. Deploying analytical argumentation and empirical evidence, Mukherji suggests that a computational system of language consisting of very specific principles and operations is likely to be involved in each articulatory symbol system-such as music-that manifests unboundedness. In that sense, the biolinguistics approach may have identified, after thousands of years of inquiry, a specific structure of the human mind.
Modelling Concession Across Speakers in Task-Oriented Dialogue

We determine criteria for modellingconcession signalled via plan-based“but” in task-oriented dialogue (TOD)(following (Thomas, 2003)) basedon some examples from the corpora,analysing where Speech Act (SA) andplanning information fails to predictconcession. In our approach we focuson cases involving cross-speakerconcession, where the speaker acceptspart of the previous speaker’s turn butsignals contrast via “but”, and we arguethat this contrast can (in the examplesshown) be modelled as concessive.Then given a representation of task-planhistory in the Information State (IS)model of the dialogue, we present aninitial framework for an algorithm thatpredicts concessive interpretation acrossspeakers in two situations encounteredin the corpora. We motivate this workby showing how it updates beliefs in thePTT (Poesio and Traum, 1998) modelof dialogue and can be used to facilitaterecognition of planning mismatches andpotentially avoid misunderstandings,and more generally improve discourseunderstanding and natural languagegeneration (NLG).
The design of a microprocessor-controlled vectorcardiographic system

Sahai, Anil Kumar, "The design of a microprocessor-controlled vectorcardiographic system " (1976). Retrospective Theses and Dissertations. Paper 5701. INFORMATION TO USERS This material was produced from a microfilm copy of the original document. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the original submitted. The following explanation of techniques is provided to help you understand markings or patterns which may appear on this reproduction. 1.The sign or "target" for pages apparently lacking from the document photographed is "Missing Page(s)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting thru an image and duplicating adjacent pages to insure you complete continuity. 2. When an image on the film is obliterated with a large round black mark, it is an indication that the photographer suspected that the copy may have moved during exposure and thus cause a blurred image. You will find a good image of the page in the adjacent frame. 3. When a map, drawing or chart, etc., was part of the material being photographed the photographer followed a definite method in "sectioning" the material. It is custo,,. »; / to begin photoing at the upper left hand corner of a large sheet and to continue photoing from left to righi in equal sections with a small uverlâp. if necebSâry, secuoniiiy is continued again-beginning below the first row and continuing on until complete. 4. The majority of users indicate ihat the textual content is of greatest value, however, a somewhat higher quality reproduction could be made from "photographs" if essential to the understanding of the dissertation. Silver prints of "photographs" may be ordered at additional charge by writing the Order Department, giving the catalog number, title, author and specific pages you wish reproduced.
Why Email is not Enough: Combining Communication and Shared Representation to Support Activity Management

Modern work is highly communication-centric. Research shows the critical role that communication applications - in particular email - play in everyday work. Email is used to organize and delegate tasks, to manage communications, as an archival repository for work documents and as a contact manager (Bellotti et al., 2005, Duchenaut and Bellotti, 2001, Whittaker, 2005, Whittaker and Sidner, 1996). However, there are numerous problems using email for task management (Bellotti et al., 2005, Whittaker et al., 2002, Whittaker, 2005). Users relying on email complain about: • forgetting commitments from self and others (tasks that they ‘owe’ or are ‘owed’) • tracking global task status (it’s hard to abstract from multiple messages to determine where a project currently stands) • determining who’s involved in a complex task • integrating information across different technologies (people may communication about a task in email, voicemail or using IM – and it’s often hard to combine information) • managing attachments. Partly because of these problems, there have been various attempts made to develop alternative models and technologies for collaboration. The most significant of these are shared workspaces such as TeamRooms and more recently Wikis. The defining feature of these technologies is that they support collaboration using a
Grans aglomeracions metropolitanes europees

L'objectiu d'aquest informe es aproximar-se al coneixement de l'estructura urbana europea i, en concret, dels seus pols principals, les aglomeracions metropolitanes originades per l'expansio urbanistica i funcional de les ciutats tradicionals mes enlla dels seus termes administratius. Avui son aquests grans conjunts urbans els que concentren la major part de la poblacio i de les activitats, els que aglutinen i dinamitzen els respectius entorns regionals i nacionals, i els que operen com a nodes d'una xarxa mundial de relacions cada vegada mes interconnectada. La diversitat de denominacions per a descriure aquests conjunts (arees, conurbacions, regions, aglomeracions, metropolis .) il·lustra ja la complexitat del fenomen i les dificultats d'abordar-lo amb plantejaments homogenis i d'abast universal. Els nombrosos estudis sobre la questio i la seva varietat d'enfocaments conceptuals i metodologics (criteris fisics, socioeconomics, funcionals, administratius, etc.) ho confirmen a bastament. La finalitat d'aquest estudi se circumscriu a la identificacio de les concentracions urbanes europees, la seva delimitacio fisica i la corresponent determinacio de les seves dimensions basiques. A mes de I'interes propi que aixo ja te per a unes primeres comparacions entre les diferents realitats urbanes, constitueix un pas previ imprescindible per a d'altres possibles estudis mes complets.
Locomotion Interface on a Virtual Plane

A clearance formed between two members is measured by optical means projecting a light beam on the respective members and utilizing lights reflected therefrom. The reflected lights from the two members are passed through means capable of regulating an optical length and polarization means, whereupon they are caused to interfere. The irradiance of the interference light is converted into an electric signal. The electric signal is applied to a control circuit, and is fed back to the means capable of regulating an optical length so that the optical-path difference of the reflected lights may be held constant. The change of the clearance between the two members is found by measuring the factor of the feedback.
A Model Of Visual Recognition Implemented Using Neural Networks

The ability to recognise and classify objects in the environment is an important property of biological vision. It is highly desirable that artificial vision systems also have this ability. This thesis documents research into the use of artificial neural networks to implement a prototype model of visual object recognition. The prototype model, describing a computational architecture, is derived from relevant physiological and psychological data, and attempts to resolve the use of structural decomposition and invariant feature detection. To validate the research a partial implementation of the model has been constructed using multiple neural networks. A linear feed-forward network performs pre-processing after being trained to approximate a conventional statistical data compression algorithm. The output of this pre-processing forms a feature vector that is categorised using an Adaptive Resonance Theory network capable of recognising arbitrary analog patterns. The implementation has been applied to the task of recognising static images of human faces. Experimental results show that the implementation is able to achieve a 100% successful recognition rate with performance that degrades gracefully. The implementation is robust against facial changes, minor occlusions, and it is flexible enough to categorise data from any domain. Visual Recognition Using Neural Networks
Open Sources 2.0: The Continuing Evolution

Foreword: Source Is Everything Kim Polese Acknowledgments List of Contributors Introduction Chris DiBona, Danese Cooper, and Mark Stone 1. Open Source: Competition and Evolution 1. The Mozilla Project: Past and Future Mitchell Baker 2. Open Source and Proprietary Software Development Chris DiBona 3. A Tale of Two Standards Jeremy Allison 4. Open Source and Security Ben Laurie 5. Dual Licensing Michael Olson 6. Open Source and the Commoditization of Software Ian Murdock 7. Open Source and the Commodity Urge: Disruptive Models for a Disruptive Development Process Matthew N. Asay 8. Under the Hood: Open Source and Open Standards Business Models in Context Stephen R. Walli 9. Open Source and the Small Entrepreneur Russ Nelson 10. Why Open Source Needs Copyright Politics Wendy Seltzer 11. Libre Software in Europe Jesus M. Gonzalez-BarahonaGregorio Robles 12. OSS in India Alolita Sharma and Robert Adkins 13. When China Dances with OSS Boon-Lock Yeo, Louisa Liu, and Sunil Saxena 14. How Much Freedom Do You Want? Bruno Souza 2. Beyond Open Source: Collaboration and Community 15. Making a New World Doc Searls 16. The Open Source Paradigm Shift Tim O'Reilly 17. Extending Open Source Principles Beyond Software Development Pamela Jones 18. Open Source Biology Andrew Hessel 19. Everything Is Known Eugene Kim 20. The Early History of Nupedia and Wikipedia: A Memoir Larry Sanger 21. Open Beyond Software Sonali K. Shah 22. Patterns of Governance in Open Source Steven Weber 23. Communicating Many to Many Jeff Bates and Mark Stone 3. Appendixes A. The Open Source Definition B. Referenced Open Source Licenses C. Columns from Slashdot Index
Performance and Scalability of Sudoku Solvers

This paper aims to clarify the differences in algorithm designwith a goal of solving sudoku. A few algorithms werechosen suitable to the problem, yet different from one another.To take an everyday puzzle and utilize common computerscience algorithms and learn more about them. Getrelevant data to see how they perform in situations, howeasily they can be modified and used in larger sudokus.Also how their performance scales when the puzzle growslarger.From the results Dancing links was the fastest and scaledbest of the algorithms tested, while Brute-force and Simulatedannealing struggled keeping consistent results.
Drive Encryption and Secure Login to a Secure Workstation for Special Applications

We discuss the problem of a secure login to a virtualized workstation. For increased security, the workstation’s hard drive is encrypted. During the startup, a decryption password to the drive must be entered by a user. We propose a solution that involves mutual authentication between the workstation and the user and ensures the password may be entered securely. Keywords—drive encryption, evil maid, Linux, secure login, TPM, virtualization, Xen.