Miracle-dz/UniFAR-FTUs huggingface dataset:
Codage espace temps pour les canaux MIMO à accès multiple

Extensive research has been carried out these last few years on the single-user MIMO STBC design using advanced algebraic tools, namely cyclic division algebra. Families of single-user codes have been carefully constructed to achieve the DMT of the MIMO channel. Motivated by the promising results obtained in the single-user scenario, the aim of this thesis is to construct new families of multi-user STBCs. Multi-user MIMO (MU-MIMO) channels have recently attracted considerable attention because of its essential practical implication in today’s and future communication systems. The current study focuses on MIMO MAC where multiple users communicate with one receiver. A coherent communication system is considered, where the receiver has a perfect CSI while the transmitters do not have any CSI, but are aware of the channel statistics. The construction of the proposed multiple-access codes is based on an in-depth understanding of the information theoretic aspects of the MAC that give insight on the behavior of the channel. In order to simplify the problem, a MAC with single-antenna at the transmitters and an arbitrary number of antennas at the receiver is first considered in a synchronous and an asynchronous scenario. Next, the general MIMO-MAC with multiple-antenna at both the transmitters and the receiver is investigated. Finally, the multiple-access relay channel is considered, where one or more relays help the users communicate with the destination while the cooperation between the users is not allowed. In this case, we applied the code constructed for the MIMO MAC in a distributed way.
Sociometer Theory

Mark Leary and colleagues developed sociometer theory to explain the nature and function of the self-esteem system. As outlined in Leary and colleagues’ initial theoretical and empirical papers on the subject (Leary and Downs 1995; Leary et al. 1995), ancestral human beings faced an important adaptive dilemma: How to ensure that they attain andmaintain the high-quality social bonds that are necessary for survival? According to sociometer theory, the answer to this evolutionary dilemma was the development of the self-esteem system. Self-esteem – or one’s sense of worth or value as a person – monitors the degree of social acceptance that one enjoys from one’s social circle and alerts the self to any threats to belonging that may arise. In the decades since its original publication, sociometer theory has emerged as one of the most wellknown theories of self-esteem. In the passages to come, we will describe sociometer theory in detail, discuss the empirical support for the theory, and highlight the ways in which the theory has been refined since its original inception.
Assessment as a catalyst for innovation

This paper provides a critique of the impact of technology on assessment and considers whether innovative uses of ICT might result in new e-pedagogies and practices in assessments. The paper consists of an overview of the key characteristics of ICT and associated pros and cons, along with a reflection on CAA specifically and the associated key research questions and issues.
Developing a simulation game to facilitate acquisition of knowledge on road safety for schoolchildren

Due to rising number of traffic accidents in Malaysia, road safety program was introduced in schools as a prevention and reduction steps to educate schoolchildren on the road safety.However, the current methods used for transferring road safety knowledge are not effective since they do not stimulate and motivate children to learn and acquire the right knowledge.Therefore, we propose a simulation game called Road Train Safety Game as an alternative method to transfer road safety knowledge for children aged from 7 to 12 years old.In this paper, we report on the development of the simulation game and discuss on features of the games that promote motivating knowledge acquisition for the children.
L'urbanisation des zones côtières : utilisation des sols, implications morphologiques et environnementales. Le cas de la ville de Jeddah

Jeddah est la plus grande ville côtière du royaume et abrite le premier port de la mer Rouge, représentant la porte d’entrée des pèlerins pour rejoindre la Mecque. Cette cité historique, coincée entre la mer Rouge à l’ouest et la zone montagneuse du Hedjaz à l’est, est la deuxième ville d’Arabie Saoudite en termes d’extension spatiale et de population, après la capitale Riyad. Elle a connu une croissance urbaine sans précèdent, lors des décennies 70 et 80, qui s’est traduite par une littoralisation intensive. Cette étude se focalise sur cette pression anthropique continue sur la zone côtière . Une approche de suivi spatiotemporel de l’extension urbaine sur la mer, par l’utilisation des Systèmes d’information géographique (SIG) et des données de télédétection multisources a été adoptée. Les superficies des remblaiements successifs ont été cartographiées pour différentes périodes de 1965 à 2020. Les diverses affectations dont elles ont fait l’objet sont analysées, ainsi que changements morphologiques et environnementaux qu’elles entrainent. Les résultats montrent que la surface totale des terrepleins sur la période d’observation atteint environ 33 km (0,59 km /an en moyenne) dont 24,5 km entre 1972 et 1986, période de boom économique où Jeddah a enregistré sa plus grande expansion urbaine. Lors des diverses phases de la période d’étude, le port de Jeddah a gagné environ 11,8 km de superficie sur la mer, soit 94,4% de la zone industrialo-portuaire actuelle. Ainsi ce sont des zones maritimes, des récifs coraliens et d’ilots qui ont été transformées en terrains urbanisés dont les utilisations sont variées ; installations portuaires (36,1%), gouvernementale (21,5%), service Public (16.4), récréative/touristique (15,2%), ou résidentielle et commerciale (10,8%). Ces mutations impliquent à leur tour un bouleversement de l’environnement marin côtier ; création de lagunes semi-fermées et d’ilots artificiels, disparition de récifs coralliens, d’ilots et une modification de la morphologie de cette zone côtière.
RECENT STRATEGIES FOR EFFICIENT SYNTHESIS AND BIOLOGICAL ACTIVITIES OF COUMARIN-CHALCONE DERIVATIVES

Coumarins and chalcones are potential pharmacological and biologically active molecules obtained from natural source. Coumarins have predominant pharmacological activities such as antidiabetic, antitumor, and anti-inflammatory activity. Chalcones are also one of the naturally occurring pharmacologically vital molecules with different activities such as anti-inflammatory, antitumor, antimicrobial, and antimalarial activity. Literature reveals that a huge number of coumarinyl chalcone derivatives have various pharmacological activities. Coumarinyl chalcone derivatives gained more prominence due to their significant biological activities. This work explains the current information about synthesis techniques, pharmacological importance, and clinical applications of coumarinyl chalcone derivatives.
Moderating Effects of Requirements Uncertainty on Flexible Software Development Techniques

Partially due to increasing requirements uncertainty, flexibility has been in the focus of many software development activities for many years. Only few studies have analyzed the indirect effect that different levels of requirements uncertainty have on the effects of established flexible development techniques. This study analyzes how requirements uncertainty moderates the well studied effects of (1) sequential development, (2) investment in architectural design, and (3) intensity of early feedback on the performance of contract development projects. It finds that requirements uncertainty negatively moderates the effects of sequential development. It also points out that requirements uncertainty negatively moderates the effect of investment in architectural design. For agile development approaches, the value of investment in architectural design falls with increasing uncertainty. However, for plan-driven approaches, investment in architectural design is positive at any level of requirements uncertainty. Finally, the paper finds that early feedback throughout the development process is helpful at any level of requirements uncertainty.
Social emotions are governed by a common grammar of social valuation: Theoretical foundations and applications to human personality and the criminal justice system

Social emotions appear to be behavior-regulating programs built by natural selection to solve adaptive problems in the domain of social valuation—the disposition to attend to, associate with, defer to, and aid target individuals based on their probable contributions to the fitness of the valuer. For example, shame functions to prevent and mitigate the costs of being socially devalued by others, whereas anger functions to correct those people who attach insufficient weight to the welfare of the self. Here we review theory and evidence suggesting that social emotions such as guilt, gratitude, anger, pride, shame, sadness, and envy are all governed by a common grammar of social valuation even when each emotion has its own distinct adaptive function and structure. We also provide evidence that social emotions and social valuation operate with a substantial degree of universality across cultures. This emotion-valuation constellation appears to shape human sociality through interpersonal interactions. Expanding upon this, we explore how signatures of this constellation may be evident in two spheres of human sociality: personality and the criminal justice system.
Magnitude of Virological Treatment Failure and Its Determinate Factors Among Adults on First Line Antiretroviral Treatment at Defence Main Health Department - Level II & Level III Hospitals In Ethiopia

Introduction: Highly active antiretroviral therapy (HAART) played a critical role in the medical management of HIV infected individuals by restoring the immune function and minimizes HIV related outcomes. But treatment failure minimized these advantages and leads to an increment of morbidity and mortality with poor quality of life in all HIV patients. Objective: The aim of this study was to assess the virological treatment failure and its determinant factors of patients on first line HAART at five commandant Hospitals, Ethiopia. Methods: A Retrospective hospital based study design was used to determine magnitude of treatment/virology failure and its determinant factors, among HIV positive adults enrolled to HAART program at five commandant Hospitals from February 1 to May 30, 2018. Data abstracted from patient charts or electronic data base was cleaned, coded, entered and analyzed using EPI data version 3.1 and SPSS version 23 statistical software package. Descriptive statistics, proportion of treatment failure cases among those diagnosed to have treatment failure was calculated. Bi-variate and multiple logistic regressions were used to analysis association between the outcome and the independent variables were taken as significant at P<0.05 (2 tail test) and 95% confidence intervals (CIs). Result: Among the 326 participants enrolled, 229(70.2%) were males. The mean ages were 36.84 years (SD+7.716) years and the median months on HAART from initiation were 81.50 months. A total of 75(23%) participants were found to have treatment failure among those 50(15.3%) immunological failure, 7(2.1%) virological failure and 16(4.9%) all Treatment failure (VF, IF&CF in one). The mean CD4 T-cells at base line and at study time were 213.3 cells/ µl. Long duration on treatment (AOR= 4.231, 95% CI: 1.453-12.320) , IPT cycle (AOR = 3.060, 95% CI: 1.388-6.746), Type of drug AZT based therapy (AOR= 2.572, 95% CI: 1.357-4.875), experience of PEP (AOR=7.950, 95% CI: 1.945-66.915) and lost to follow up (AOR= 9.104, 95% CI: 2.973-27.873) were found to be significant predictors of treatment/virologic failure and showed positive odds ratio. Conclusion: This study demonstrates high treatment /virologic failure and the determinant factors of treatment/virologic failures among HAART first line adult are still changing. Therefore, evidence-based intervention and early detection of treatment failure must be made to further identify the potential causes and set standardized protective mechanisms of treatment/virologic failures.
Filtros activos de potencia para la compensación instantánea de armónicos y energía reactiva.

Since the last quarter of the last century, and due to the spectacular increment of the connection of electronic loads to the electric system, it has been extraordinarily increased the existence of non-sinusoidal currents with high content of harmonics. This fact, in comparison to our environment, is named "electric pollution". The presence of these electronic loads is given in all power levels, from hundreds of VA until some MVA and, although the problem is increased with the installed power, it is not negligible the effect achieved by the accumulation of many loads of small power. Due to this fact specific power quality standards have been imposed. The conventional filter techniques, based on passive filters installation tuned at the supposed harmonics in the plant, became inadequate due to the variability in the value and content of the same ones throughout the time. The present PhD thesis is dedicated to the study of the current techniques for the elimination of those harmonics, and also the conventional reactive energy, by means of Active Power Filters based on the use of static power converters and specific control algorithms. After exposing the mains theories on the instantaneous power in the electric systems, and their application to the compensation techniques of harmonic and reactive energy by means of Active Power Filters, improvements are contributed in the application of those theories consistent in the simplification of the same ones based on the exclusive consideration of the active instantaneous power, as a really physical concept and easily measurable. In particular it is considered of special interest, for their simplicity and excellent results, the so called Simplified General Theory of the Instantaneous Power. This theory is applicable to one-phase as well as three-phase systems with or without neutral conductor. Analogical and digital prototypes of control have been built, based on the exposed theories, with experimental results that confirm the validity of the same ones. An industrial prototype of a Active Power Filter of 40kVA of compensation power has also been built, whose control is based in Simplified General Theory of the Instantaneous Power, and experimental results in laboratory demonstrate the excellent behaviour even with electronics loads whose Total Harmonic Distortion of current (THDi) exceeds 70%. This THDi is reduced below values of 5%.
Model for the patch radiator with a perturbation to achieve circular polarization

Some models have been proposed for the equivalent circuit of the patch antenna with a perturbation (central slots, gaps at the edges etc. ) in order to get circular polarization. These models make, in some cases, a qualitative description of the behaviour of the patch but without foreseeing its behaviour concerning AR (axial ratio) and reflection coefficient, versus frequency, or in other cases their results are not accurate, in the authors' knowledge, in all the parameters mentioned. They propose a simple model allowing, starting from measurements of the patch alone or from its design parameters, them to foresee the optimum frequency at which circular polarization will be achieved by means of a perturbation (central slot or other), the AR versus frequency (and so the bandwidth in circular polarization) and even the reflection coefficient versus frequency (matching bandwidth). The model has been applied to several circular patches (at different frequencies, and with different thickness of substrates) showing a very good agreement with the experimental results. >
The Smart Cards: A Developer's Toolkit

From the Publisher: The complete smart card guidebook for decision-makers, product managers, developers, and integrators. Smart card application development from start to finish: design, development, and deployment Covers every component of a complete system: cards, readers, host software, management systems, and more Focuses on advanced "post issuance programmable" multi-application smart cards Presents detailed case studies and product coverage Offers up-to-the-minute insights into the evolving smart card marketplace and smart card technology Smart cards represent a breakthrough solution for maximizing security in a wide range of applications. Now, two leading smart card consultants present a thorough, up-to-date, accessible introduction to smart card technology that will be invaluable to developers and decision-makers alike. Smart Cards: A Developer's Toolkit covers all you need to know to plan, design, develop, and deploy advanced multi-application smart card environments, including: Smart card physical structure, construction, tamper resistance, and tamper-evident features International standards, inter-industry command sets, and industry specifications "Post issuance programmable" smart cards: the cutting edge of smart card deployment An in-depth review of two "high-performance" smart cards, including one multi-application card PC and workstation host software for supporting smart cards Applications with the SIM smart cards in GSM and 3G mobile phones Card management systems and readers for large-scale applications in real-world environments marketplace for smart cards in the U.S. and worldwide The authors present case studies from today's most advanced smart card deployments, covering both the logistics of initial deployment and best practices for supporting ongoing operations and card populations. Whether you're an IT manager, corporate security officer, product manager, developer, or integrator, Smart Cards: A Developer's Toolkit gives you a powerful new weapon for protecting your digital assets.
Microcomputer System Integration for Air Control Training

Abstract : The research was designed to demonstrate a microcomputer system configuration for air control training. The objective of the research was to systemmatically integrate off-the-shelf components of microcomputer and microprocessor technology into a model prototype system for air control training. A subgoal was to examine voice input/output technology for its potential use in a microcomputer-based air control training system. The report describes the microcomputer system PC/NTDS (Personal Computer/Naval Tactical Data System) used for Air Intercept Control (AIC) training. It describes the automated speech recognition and speech generation technology chosen to interface with the system. Data collected using several subjects who completed AIC lessons using the system are summarized. Advantages and disadvantages of using voice input/output technology for air control training are discussed, and recommendations for future research using the microcomputer testbed are provided. Keywords: Voice synthesis, Air intercept control, Simulation, Instructional techniques.
A Glimpse of the Future: The 62nd PTTI Systems & Applications Meeting November 2030

Abstract : If the PTTI Systems & Applications Meeting is to thrive and grow, our community needs to consider the direction this conference should take as the 21st century proceeds. At a conference workshop, attendees attempted to assess our community's optimal appearance 20 years from now, and to develop plans to put the PTTI conference on a path to that future. Here, we review the major ideas brought up at the workshop. Specifically, after a brief review of some of the topics that have been of interest to the PTTI community over the past 20 years, attendees were asked to break into groups and brainstorm various views of a PTTI future. The task of these groups was threefold: 1) to predict the session and paper titles for the 62nd Annual PTTI Meeting -to be held in November 2030, 2) to list the impediments that could thwart realization of that conference, and 3) to imagine mitigation strategies that could remove those impediments. Junior and senior members of each group volunteered to further explore these ideas, and to present their thoughts/findings at next year's PTTI conference.
World Bank urban transport strategy review : the case of Cairo, Egypt - executive summary

The increased density and sprawl of Cairo's urban areas are the consequence of a number of factors, of which the major ones are the physical and geographic features, transport supply, urban policy and the control of urban development, market laws, government aid, property developers, consumer sensitivity to building quality and costs, travelling distances, tariffs, the immediate surrounding area, etc. The purpose of this study is to measure the impact of a transport policy on the accessibility and development of the Cairo urban area. Cairo's transport policy has encouraged tremendous development of major road infrastructures, partial liberalization of the surface public transport network resulting in a considerable expansion of private microbus lines, and an extension of the bus network at the expense of the density of supply and of regularity, and without creating segregated lanes as recommended in successive transport and urban studies, amongst other significant developments. This report explores the influence of transport on the development of urban areas, and the consequences of such developments.
Charge Transport in Disordered Materials

This thesis is focused on on using Monte Carlo simulation to extract device relevant properties, such as the current voltage behavior of transistors and the efficiency of photovoltaics, from the hopping transport of molecules. Specifically, simulation is used to study organic field-effect transistors (OFETs) and organic photovoltaics (OPVs). For OFETs, the current was found to decrease with increasing concentration of traps and barriers in the system. As the barrier/trap concentration approaches 100%, the current recovers as carrier begin to travel through the manifold of connected trap states. Coulomb interactions between like charges are found to play a role in removing carriers from trap states. The equilibrium current in OFETs was found to be independent of charge injection method, however, the finite size of devices leads to an oscillatory current. Fourier transforms of the electrical current show peaks that vary non-linearly with device length, while being independent of device width. This has implications for the mobility of carriers in finite sized devices. Lastly, the presence of defects and high barriers (> 0.4 eV) was found to produce negative differential resistance in the saturation region of OFET curves, unlike traps. While defects and barriers prohibit carriers from reaching the drain at high voltages, the repulsive interaction between like charged carriers pushes charges around the defects. For OPVs, the effects of device morphology and charge delocalization were studied. Fill factors increased with domain size in monolayer isotropic morphologies, but decreased for band morphologies. In single-phase systems without Coulomb interactions, astonishingly high fill factors (70%) were found. In multilayer OPVs,a complex interplay of domain size, connectivity, tortuosity, interface trapping, and delocalization determined efficiency.
Benchmarking the Quality of Experience of Video Streaming and Multimedia Search Services: the CONTENT Network of Excellence Ocena postrzeganej jakości usług strumieniowania wideo oraz wyszukiwania plików multimedialnych: Sieć Doskonałości CONTENT

The paper presents selected issues on benchmarking the Quality of Experience (QoE) for video streaming and multimedia P2P search services being investigated in the VIFP NoE CONTENT Content Networks and Services for Home Users under participation the Department of Telecommunications (AGH University of Science and Technology Krakow). The first section of the paper presents the general approach used in the project including the state-of-art of Quality of Experience. The QoE of video streaming services is analysed in the third section while the QoE of P2P search services is described in the fourth section.