Miracle-dz/UniFAR-FTUs huggingface dataset:
Lowering the error-rate floors of moderate-length high-rate irregular ldpc codes

This paper presents a specialized class of irregular low-density parity-check (LDPC) codes of moderate length (lo3 5 n 5 lo4) and high rate (R 2 3/4). Codes in this class admit low-complexity encoding and have lower error rate floors than other irregular LDPC code design approaches. It is also shown that this class of LDPC codes is equivalent to a class of systematic serial turbo codes. Code designs of moderate-length, high rate codes which yield bit error rate floors below lo-' are presented.
Adaptive filtering methods : on methods use a priori information in order to reduce complexity while maintaining convergence properties

• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers.
A 640-ps, 0.25-μm CMOS, 16×64-b three-port register file

We describe a 640-ps read access, 16-word by 64-b, three-port register file fabricated in 0.25-/spl mu/m effective channel length CMOS technology. It features the capability to perform a write followed by a read in the same cycle at frequencies above 500 MHz. High speed is achieved by using a novel cell and array structure. Static circuit design is used exclusively throughout the entire register file and is optimized for high-speed operation. Measured results of the same-cycle read-after-write demonstrate register file operations at 625 MHz. Additionally internal probe measurements of the read access path components are presented and compared with circuit simulations.
Multi-Modality Video Scene Segmentation Algorithm with Shot Force Competition

In order to quickly and effectively segment the video scene, a multi-modality video scene segmentation algorithm with shot force competition is proposed in this paper. This method is take full account of temporal associated co-occurrence of multimodal media data, to calculate the similarity between video shot by merging the video low-level features, then go to the video scene segmentation based on the judgment method of shot competition. The authors experiments show that the video scene can be efficiently separated by the method proposed in the paper.
Parallel execution of the saturated reductions

This paper addresses the problem of improving the execution performance of saturated reduction loops on fixed-point instruction-level parallel digital signal processors (DSPs). We first introduce "bit-exact" transformations, that are suitable for use in the ETSI and the ITU speech coding applications. We then present "approximate" transformations, the relative precision of which we are able to compare. Our main results rely on the properties of the saturated arithmetic.
Computerized Alerting System Warns of Life-Threatening Events.

Problems associated with acute patient care include 1) information overload, 2) complexity of patient data, 3) data communication, 4) delays in treatment leading to critical illness, and 5) absence of attending physicians when decisions are required. Because of their speed and information processing capabilities, computers have been increasingly employed to help overcome these problems. At LDS Hospital, a comprehensive computer system called HELP has been developed. This system acquires, stores and manages patient data, and provides decision-making capabilities. HELP's capabilities have been applied to develop a tool for identifying life-threatening conditions in patients based on laboratory test results. Once a life-threatening condition is identified by the computer, the computer sends an alert message so that appropriate treatment may be rapidly instituted. Preliminary results from our evaluation of the expert system show that it does affect patient care by increasing the number of times that patients are treated for life-threatening conditions. Patient outcome is benefited by shortening the time needed for the patients laboratory test values to return within normal limits.
Network-based AAA Routing over Heterogeneous Wireless Networks

Summary This paper addresses the problem of AAA routing in roaming situations over heterogeneous wireless networks. While traveling, a mobile user often initiates an authentication process with the user’s home network AAA server to use the resources of a remote network. In the process, the user wants to affect the selection of a roaming path to the user’s home network, because pricing and other services differ by the path. We present a networkbased solution for the selection that eliminates the necessity of user’s inquiring, collecting, and analyzing data over, possibly, heterogeneous wireless networks. The solution assists the user in selecting a roaming path with respect to a user-preferred metric and performing a mutual authentication afterward via the selected path. We first propose a routing and label computation algorithm for generating pre-provisioned routes through which authentication traffic would pass. At the heart of the solution is a mutual authentication protocol that, together with registration, handshake, and route deviation detection schemes, provides a secure, privacy preserving, and ultralightweight way of authentication. Using password-based identification, the solution is generic and requires no particular transmission mechanism, payload, or routing framework. It should be incrementally deployable over selected AAA servers interoperable with existing AAA infrastructure not knowing of the solution.
Sign-spatiality in Kata Kolok: How a village sign language in Bali inscribes its signing space

From its inception, the field of sign linguistics has been pre-occupied with the linguistic significance of sign-spatial mapping, and this thesis builds on this longstanding tradition (see for example Supalla 1978; Poizner, Klima & Bellugi 1987; Engberg-Pedersen 1993; Emmorey & Reilly 1995; Taub 2001; Liddell 2003; Perniss 2007). This dissertation presents new data from Kata Kolok, a sign language which emerged in a village community of North Bali and has been the primary means of communication for at least five generations of deaf, native signers (Marsaja 2008; this thesis). Supported by extensive periods of linguistic fieldwork, corpus analysis, as well as targeted, stimulus-based elicitation, it argues that Kata Kolok signers structure their spatial reference system preferentially on the basis of geographical locations, and that they do not utilise the dimensions of the signing space in order to talk about non-spatial concepts. Part II starts of by summarising what is currently known about Kata Kolok from genetic, anthropological, and sociolinguistic studies that began in the mid1990s. These initial descriptions form the basis for the methodological choices that led to the creation of a Kata Kolok corpus, which currently consists of almost 150 hours of video data. This digital archive includes sections devoted to spontaneous interaction, culturally entrenched narratives, as well as longitudinal recordings of first language acquisition, and deaf-hearing interactions.2 The description of research methodology more generally is followed by a grammatical sketch of
The Role of Gesture in Meaning Construction

This article examines the role of gesture in the shared meaning-making processes of 6th-grade students studying plate tectonics using a data visualization tool; specifically, a geographic information system. Students' verbal and gestural characterizations of key concepts of plate motions (i.e., subduction, rift, and buckling) were transcribed and coded across episodes of small-group work during the course of the unit, tracking emergent concepts and their subsequent refinements. The emergence histories of these concepts showed that they were initiated in gesture before they were conveyed in speech. Once they appeared in speech, speech and gesture figured prominently in the further elaboration, modification, and refinement of the key concepts. Gestures introduced by 1 member of the group were picked up and used by peers. Gestures were found to afford joint attention to concepts and negotiation of meaning in the group (e.g., through manual manipulation, imitation, and correction of gestures). These interactions appeared to advance the group's shared understanding of plate tectonics, and to mediate individual student learning. The findings suggest that explicit attention to gesture in instruction and assessment may impact the development of domain understandings in science investigations.
Modeling misperceptions in the Persian Gulf crisis

The Persian Gulf war is modeled as a hypergame with respect to the situation existing by January 15, 1991. The conflict is modeled as a 1st-level hypergame prior to the beginning of the air campaign, where Iraq had misinterpretations about the coalition's preferences. The misperceptions led to the Iraqi's miscalculations about the possible consequences of the confrontation. According to the hypergame analysis, which was completed before January 15, 1991, the predicted resolution is outcome 18, where the US-led forces launch air strikes against the strategic targets in Iraq and occupied Kuwait, followed by a full scale ground war, while Iraq responds with military offensives. This prediction coincides in most part to what happened historically. <<ETX>>
Yaw control algorithm via sliding mode control

Electronic controls have been developed to improve vehicle dynamics in automotive applications. Several luxury vehicle manufacturers have positioned themselves to offer increased vehicle stability by expanding the current anti-lock brake system (ABS) and traction control system (TCS) technology into the arena of yaw control. A yaw control algorithm is developed to give an additional measure of vehicle stability control during adverse driving maneuvers over a variety of road conditions. By measurements of vehicle states, the control algorithm determines the level of vehicle stability and intervenes as necessary through individual wheel braking to provide added stability and handling predictability. The control law is based on optimum search for minimum yaw rate via sliding mode control.
SENSE from a commercial perspective

SENSE (SENSitivity Encoding) allows reduced scan time in MRI with multiple coils by reducing the field of view (FOV) and unwrapping the subsequent image aliasing using the spatial information derived from the B1 field or sensitivity of the receive coils. The unwrapping requires solving a set of simultaneous equations at each pixel in the image. SENSE images have lower signal to noise (SNR) than conventional images because of the reduced scan time and also because the alias unwrapping gives an additional noise magnification called the geometry factor. The coil design can be optimized to minimize the geometry factor SNR penalty. Numerical conditioning of the equations makes the unwrapped images less noisy when the scan plane and coil result in a poor geometry factor. Measuring the sensitivity reliably is difficult, especially when patient motion is unavoidable. Several methods such as filtering and extrapolation have been developed to make the sensitivity measurement more robust. SENSE can be used to reduce scan time for any MRI application that has sufficient SNR. Some examples include contrast-enhanced angiography, diffusion weighted imaging, abdominal imaging and cardiac imaging.
Study on role-based access control model for web services and its application

According to the advantage of platform independent, loose coupling and opening, Web Services application infrastructure becomes preferred solution to enterprise information sharing and enterprise application integration. New business applications can be dynamically assembled from a variety of Web Services. However, it also presents challenges in terms of security and management. Large-scale interconnection of systems and services, decentralized administration, and rapidly changing service compositions require a flexible access control model that is adapted to these challenges. In this paper, we focus on access control of Web Services based on its security requirements. We propose model and mechanism for specifying and enforcing role-based authorization models for Web Services. We also develop a prototype application to demonstrate the practical feasibility of this technology.
On antenna- and frequency diversity in GSM related systems (GSM-900, DCS-1800, and PCS1900)

This paper analyze the performance of two branch antenna diversity in GSM related systems. Several combining techniques for both up- and downlink are analyzed. Frequency diversity obtained from slow frequency hopping in GSM is also considered. Finally antenna diversity results for a non-ideal antenna configuration, i.e., introducing antenna branch cross-correlation or cross polarization discrimination (XPD) are presented.
Laser satellite communication network-vibration effect and possible solutions

A number of serious consortiums develop satellite communication networks. The objective of these communication projects is to service personal communication users almost everywhere on Earth. The intersatellite links in those projects use microwave radiation as the carrier. Free-space optical communication between satellites networked together can make possible high-speed communication between different places on Earth. Some advantages of an optical communication system over a microwave communication system in free space are: (1) smaller size and weight, (2) less transmitter power, (3) larger bandwidth, and (4) higher immunity to interference. The pointing from one satellite to another is a complicated problem due to the large distance between the satellite, the narrow beam divergence angle, and vibration of the pointing system. Such vibration of the transmitted beam in the receiver plane decreases the average received signal, which increases the bit error rate. We review: (1) the present status of satellite networks, (2) developing efforts of optical satellite communication around the world, (3) performance results of vibration effects on different kinds of optical communication satellite networks, and (4) seven approaches to overcome the problems caused by transmitter pointing vibration.
Calculating fault propagation in functional programs

The production of safety critical software is bound to a number of safety and certification standards in which estimating the risk of failure plays a central role. Yet risk estimation seems to live outside most programmers’ core practice, involving simulation techniques and worst case analysis performed a posteriori. In this paper we propose that risk be constructively handled in functional programming by writing programs which choose between expected and faulty behaviour and by reasoning about them in a linear algebra extension to the standard algebra of programming. In particular, the paper calculates propagation of faults across standard program transformation techniques known as tupling and fusion, enabling the fault of the whole to be expressed in terms of the faults of its parts. Calculating fault propagation in functional programs Daniel R. Murta , Jose N. Oliveira pg23205@alunos.uminho. pt, jno@di.uminho. pt
Recent developments in parallel processing

The author advocates a concentration on two main classes of highly parallel architecture rather than a proliferation, which confuses the direction of software engineering developments. He discusses the two classes. DAP and supernode transputer arrays, and compares their performance. He concludes that the idea of welding together the SIMD and MIMD architectures to provide a very general capability machine should be discouraged. Instead, their individual versatility suggests that either could be used in many roles, and the complications of data interfacing and dual standards of programming data interfacing are unnecessary. <<ETX>>
Development of a computer-based system for studying human stereopsis: contribution to the study of human speed of detection of visual depth

We have developed a computer-based method for measuring the speed of human visual depth perception (stereolatency). Since it needs only a personal computer and special glasses, our method is easier to use than other techniques, which require electromechanical devices. We have tested 25 normal subjects and have found a mean stereolatency of 258.3 ms, which is similar to that reported by others with the use of such electromechanical methods. We have also identified a group of normal subjects who have stereolatencies in excess of 500 ms, who probably do not use stereoscopic vision in everyday life. Finally, the use of different experimental paradigms has provided evidence that increased environmental luminance is able to speed up stereoscopic perception. We postulate that such effect is due to an excitatory effect on retinal photoreceptors, which are brought to a level of hyperpolarization nearer the threshold for the production of afferent impulses to the visual system, resulting in faster phototransduction and shorter stereolatencies.
A Domain Specific Modeling Language for Specifying Educational Games

This thesis presents a Domain Specific Modeling Language (DSML) that helps in simplifying the process of game development for educators without a programming background to express their storyboards or textual descriptions as formal descriptions. The basic approach was to use a visual modeling language to create an easy to understand description of the overall educational game. The DSML proposed in this thesis helps educators to model various constructs used for the narration of the (mathematics based) educational game’s storyflow. Aspects such as player assessment and content adaptation have also been taking into considerations. The detailed model could be used to automate the generation of a playable educational computer game. A comparative analysis of the proposed language with an existing language proposed by Marchiori et al. in their paper titled "A visual language for the creation of narrative educational games" was also made.
Task I.A - Basic Software Tools for Standard and Generalized State-space Systems and Transfer Matrix Factorizations 1

Abstract ThisreportsurveysthedeliverablesofTaskI.A. We rstgiveabriefdescriptionofthecontrolproblemsthataresolvedbythebasicnumericaltoolsdevelopedinthisTaskandwelistthedi erentroutinesofSLICOTthatcorrespondtothesecontrolproblemsandthatareavailableviaftp. WethendescribethetoolboxesthatgiveinteractiveaccessviaMatlaborScilabtothoseroutinesanddescribethebenchmarkproblemsforthisTask.We nallygiveafewnumericalexamplesexhibitingtheaccuracyandspeedofthenewtoolsanddescribeademofortheroutinesofthisTask. Contents 1 Introduction 12 Basic Control Problems Solved by Task I.A 12.1AnalysisandSynthesisinState-space 12.1. 1 Transformations 22.1. 2 Synthesis 32.1. 3 PeriodicSystems 52.2FactorizationofTransferFunctionMatrices 52.3AnalysisandSynthesisofDescriptorSystems 63 Task I.A. 1 : List of Routines 84 Task I.A. 2 : Interfacing Toolboxes 115 Task I.A. 3 : Benchmarks 126 Task I.A. 4 : Examples 137 Task I.A. 5 : Toolbox 14
Automatic Script Generation Based on User-System Interactions

Recently, web applications became the trending platform for development of new and rewritten software. Many projects that deal with improving the usability of scientific software focus efforts on web portals commonly known as “science gateways” or “virtual laboratories”. Yet still, many users prefer usage of a command line for reasons of speed, advanced features and greater control. Unfortunately, virtual laboratories are usually not compatible with each other (on the level of user experience and data formats) which make it very hard to switch between them in case of a problem or lack of specific feature. This work presents different approach. Instead of creating a new layer between user and software the proposed solution creates the tracking tool that intercepts communication between a shell and an operating system. Data generated by user and system interactions include the history of executed commands, system calls and shell environment variables. The gathered data can later be used either for analysis and visualization of processes and files or to generate scripts that recreate user’s workflow as closely as possible. The tool is supposed to work as the best effort solution and do as much work as possible but allow user to easily verify and manipulate the results. This design features a flat learning curve allowing quick start while providing good results but also providing advanced options for more advanced users and needs. Since interfaces are built using simple text protocols they allow multiple independent implementations for all or only specific modules. The external technologies used in the developed prototype include strace, GNU Bash shell and Python programming language. This thesis covers all aspects of the tool design. Starting with motivation and background that led to presented solution following with the requirements’ definitions. Subsequent chapters cover concept development, limitations and proof of concept implementation. Lastly, the final sections present vision for the future and the summary of the work done.
A Multi-word-agent Autonomous Learning Model for Regulating Word Combination Strength

Words are basic structural units of language that combine with each other to form sentences. The learning strength of combinative relations between words is of key importance in sentence structure analysis. Inspired by the analogies between words and lymphocytes, a multi-word-agent autonomous learning model based on an artificial immune system is proposed to learn word combination strength. The model is constructed via Cellular Automation, and words are modeled as B cell word agents and as antigen word agents. The language network is then simulated as an immune network. Meanwhile, Spreading Activation is employed to simulate idiotypic interactions between B cells. This research provides a completely new perspective on language and words and introduces biologically inspired processes from immune systems into the proposed model. The most significant advantage of the model is the ability of continuous learning and the concise implementation method. According to the graph-based dependency parsing method, the syntax dependency tree of a sentence can be predicted based on word combination strength in a bottom-up paradigm, from pairs of smaller structures to larger structures. Therefore, the effectiveness of the model can be verified by sentence dependency parsing. The experimental results on the Penn Chinese Treebank 5.1 indicate that our model can effectively and continuously learn word combination strength.
Network filters for Active Movie

The authors present a set of filters that extend the Active Movie COM based streaming model on the Windows operating system to span multiple machines over a TCP/IP network. The filters implement the real time protocol and they have successfully built a set of Mbone conferencing applets and an IP/PSTN bridge with these components.