Miracle-dz/UniFAR-FTUs huggingface dataset:
Trasmission Protocol for Wireless Broadcast Channel -A Cooperative Strategy

Cooperative transmission protocols are proposed for wireless broadcast channels, a fundamental building block of wireless communication networks. The concepts of cognitive radio and precoding have been introduced to broadcast channels in order to improve system performance. Information theoretic metrics, such as outage probability and diversity multiplexing tradeoff, are developed to facilitate performance evaluation. In the absence of direct S-D links, the proposed protocols can achieve a multiplexing gain close to one, whereas the traditional two-hop scheme only achieves a diversity gain of1 / 2. In the presence of direct S-D links, the proposed protocol can still outperform the comparable scheme, particularly at high multiplexing gains. Regarding to the channel state information (CSI) assumptions, in the absence of direct S-D links, the source does not need to know CSI. In the presence of direct S-D links, the use of precoding requires an extra assumption that the global CSI is available at the source.
Ensuring resilience and graceful degradation of military SATCOM TCP/IP links

The paper describes work undertaken in the UK by QinetiQ (formerly the Defence Evaluation Research Agency) and the University of Aberdeen to design a packet mode for a military satellite modem. Simulation of the protocols has shown significant improvements in performance. The design was optimised and validated at QinetiQ by direct recompilation in a SATCOM 'software radio' testbed. This novel approach has allowed rapid prototyping while allowing further simulation analysis to optimise the design.
Le RSA, innovation ou réforme technocratique ?

L’article constitue une contribution a l’analyse et a l’evaluation du revenu de solidarite active (RSA), institue par la loi du 1er decembre 2008 et mis en œuvre a partir de juin 2009. Les auteurs reviennent dans une premiere partie sur les intentions des promoteurs de cette reforme, a partir du texte de la commission Familles, vulnerabilites, pauvrete, reunie en 2005 par le president d’Emmaus de l’epoque, Martin Hirsch. Ils rappellent le diagnostic propose par celle-ci, l’echec du RMI et sa principale recommandation : mettre en place une prestation unique et lisible qui beneficie a tous les menages pauvres, qu’ils travaillent ou non. La seconde partie analyse la mise en œuvre de cette politique dans le departement de Paris ou se sont deroulees l’observation et la recherche entre mars 2010 et juillet 2011. S’interessant a la maniere dont les gestionnaires du dispositif ont interprete le texte de loi pour construire le processus d’instruction des demandes de RSA et d’orientation des allocataires du RSA et dont les differents partenaires font fonctionner ce dispositif, les auteurs s’interrogent sur les choix initiaux qui ont preside au « design » de la prestation, notamment sur l’orientation prioritaire des allocataires vers Pole emploi et la separation stricte entre parcours professionnel et parcours social.
Power quality improvement at input and output stages of three phase diode rectifier using artificial intelligent techniques for DC and AC drive applications

This paper focuses on the power quality improvement at input and output stages of three phase diode rectifier. The input current harmonics distortion (THD), power factor at input and output side and voltage regulation of the three phase diode rectifier is investigated for power quality improvement. In this method, bidirectional switches are connected across the front end rectifier. The circuit with buck regulator is simulated for different torque conditions of DC motor. Design of Fuzzy controller and Adaptive Neuro-Fuzzy Inference Systems (ANFIS) are based on heuristic knowledge converter behavior. The design of PI control is based on the frequency response of the converter. The experimental results are presented for the circuit with resonant DC link inverter and induction motor using microcontroller and FPGA based hardware implementations.
A self-tuning fuzzy control system design

A self-tuning fuzzy control system is proposed such that the controlled system has the desired output without knowing the mathematical model of the system. In this control structure, a parameter tuning algorithm based on the technology of reinforcement learning and decision making is constructed to enable it to tune the consequent parameters of the fuzzy controller such that the fuzzy controller has a self-tuning ability. In this paper, a state evaluator is considered to play the role of a critical element to evaluate the current state of the controlled system. A functional-type evaluator is used to produce a scalar value, which is provided to a parameter modifier to tune the adjustable parameters of the fuzzy controller. A decision making mechanism works as a director to select an appropriate parameter and get a better action such that the controlled system has better performance. The goal of the parameter tuning algorithm is to maximize the evaluation value of the current state such that the control objective can be attained. Finally, the inverted pendulum control problem is used to illustrate the effectiveness of the proposed control system structure.
Integrated motion control of a wheelchair in the longitudinal, lateral and pitch directions

The motion of a wheelchair is different from any other vehicles. It needs controlling in the three dimensions: the longitudinal direction, the lateral direction, and the pitch direction. This paper provides this three-dimensional control of a wheelchair taking user's manipulation into considerations. A power-assisted wheelchair is the main target of this paper. Three controls for all directions are combined to provide excellent assistance to a user. To this end, for the longitudinal and lateral directions, disturbance attenuation control is designed. For the pitch direction, tip-over protection control is designed. Lastly, we demonstrate all these controls can work independently for each purpose
Neoplasia endocrina múltiple tipo 1. Presentación de una familia afectada con diagnóstico molecular

* Genetista. Magíster en Genética y Biología Molecular. Universidad Federal de Río Grande del Sur (UFRGS), Brasil. † Genetista. Subdirectora del Instituto de Genética Médica, Hospital Italiano. Uruguay. ‡ Licenciada en Biología. Magíster en Antropología Social. Doctora en Antropología Social (UFRGS), Brasil. § Director del Instituto de Genética Médica. Miembro titular de la Academia Nacional de Medicina. Uruguay. Correspondencia: Dra. Mariela Larrandaburu Instituto de Genética Médica, Hospital Italiano. Bulevar Artigas 1632, CP 11600. Montevideo, Uruguay. www.geneticamedica. com.uy Correo electrónico: institutodegenetica.mariela@gmail.com; rquadr@dedicado.net. uy Recibido: 12/5/08. Aceptado: 21/7/08. Resumen
Digitally assisted analog and RF circuits: Potentials and issues

Resent analog and RF circuits are increasing performance assisted by digital technology. This panel will demonstrate the potentials of this technology and discuss residual issues and potential solutions. Unlike conventional panels, this panel will not discuss explicit controversy such as A or B. The aim of this panel is to show recent new technology trend and to come out the real issues and potential solutions like tutorial session. Each panelist demonstrates the feature of digitally assisted analog and RF circuits followed by showing some residual issues in about 10 min and discuss the real issues and solutions with audiences.
Learning and teaching science with analogies and metaphors

Analogies and metaphors have always been important in learning and teaching science. Indeed, science teachers who communicate ideas and concepts in their classrooms using analogies are in good company. Many important discoveries in science have been made in this manner. For example, Johannes Kepler developed his concepts of planetary motion from the workings of a clock, Christian Huygens used water wave motion to understand light phenomena, and Kekule developed the idea of the benzene ring from his dream about a serpent biting its own tail. Yet, analogies and metaphors only became a significant field of Australasian science education research in the late 1980s, with most research papers appearing in international journals from the early 1990s. Since this time, science education researchers in Australia and New Zealand have made significant contributions to research on learning and teaching science with analogies and metaphors. [n this chapter, we review Australasian research to outline the broad pathways this research has followed and to highlight s ignificant contributions the work has made to science education. We describe a series of studies from different research groups and highlight two seminal publications that are discussed later in fin er detail. The first publication Metaphor and analogy in science education (Aubusson, Harrison & Ritchie, 2006a) provides a state of the art analysis of how metaphors and analogies are used in science classrooms; the majority of the authors are Australasian. The second publication Using analogies in middle and secondOlY science classrooms (Harrison & Coli, 2008) provides both a scholarly argument for using analogies in science teaching and also presents 50 concepts from biology, chemistry, physics and earth and space science that have been taught using a model for effective analogy teaching. The chapter concludes with an analysis identifying where gaps remain in our understanding of the role of analogy and metaphor in science education and suggests emerging fields for further study. In his review of the role of analogies and metaphors in learning science, which began during a period of sabbatical leave at Curtin University, Duit (1991) noted that analogies allow new material , especially abstract concepts, to be more easily assimilated with students ' prior knowledge, enabling them to develop a more scientific understanding of the concept. A key question for science education researchers and science teachers to investigate has been whether students can economically and repeatedly employ these same analogical reasoning skills to understand a new concept or phenomenon. Students often lack the background to
Cisco Router Firewall Security

Harden perimeter routers with Cisco firewall functionality and features to ensure network security Detect and prevent denial of service (DoS) attacks with TCP Intercept, Context-Based Access Control (CBAC), and rate-limiting techniques Use Network-Based Application Recognition (NBAR) to detect and filter unwanted and malicious traffic Use router authentication to prevent spoofing and routing attacks Activate basic Cisco IOS filtering features like standard, extended, timed, lock-and-key, and reflexive ACLs to block various types of security threats and attacks, such as spoofing, DoS, Trojan horses, and worms Use black hole routing, policy routing, and Reverse Path Forwarding (RPF) to protect against spoofing attacks Apply stateful filtering of traffic with CBAC, including dynamic port mapping Use Authentication Proxy (AP) for user authentication Perform address translation with NAT, PAT, load distribution, and other methods Implement stateful NAT (SNAT) for redundancy Use Intrusion Detection System (IDS) to protect against basic types of attacks Obtain how-to instructions on basic logging and learn to easily interpret results Apply IPSec to provide secure connectivity for site-to-site and remote access connections Read about many, many more features of the IOS firewall for mastery of router securityThe Cisco IOS firewall offers you the feature-rich functionality that you've come to expect from best-of-breed firewalls: address translation, authentication, encryption, stateful filtering, failover, URL content filtering, ACLs, NBAR, and many others. Cisco Router Firewall Security teaches you how to use the Cisco IOS firewall to enhance the security of your perimeter routers and, along the way, take advantage of the flexibility and scalability that is part of the Cisco IOS Software package.Each chapter in Cisco Router Firewall Security addresses an important component of perimeter router security. Author Richard Deal explains the advantages and disadvantages of all key security features to help you understand when they should be used and includes examples from his personal consulting experience to illustrate critical issues and security pitfalls. A detailed case study is included at the end of the book, which illustrates best practices and specific information on how to implement Cisco router security features.Whether you are looking to learn about firewall security or seeking how-to techniques to enhance security in your Cisco routers, Cisco Router Firewall Security is your complete reference for securing the perimeter of your network.This book is part of the Networking Technology Series from Cisco Press, which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers.
Taxones y cultones de la serie Basilares Britton & Rose, del género Opuntia Mill., cultivados en la Comunidad Valenciana.

Se citan en este articulo los taxones y cultones de la serie Basilares Britton & Rose del genero Opuntia Mill. , cultivados como ornamentales en la Comunidad Valenciana, se aportan unas claves clasificatorias y numerosos datos, como iconografia, corologia, area de cultivo, descripcion, historia etc., de cada uno de ellos.
Criteria for the evaluation of requirements management tools supporting distributed software product line engineering and management

Santillan, Maria Florencia Criteria for the evaluation of requirements management tools supporting distributed software product line engineering and management Jyvaskyla: University of Jyvaskyla, 2015, 108 p. Information Systems, Master’s Thesis Supervisors: Heimburger, Anneli Kakola, Timo The development of software product lines (SPL) by geographically distributed teams increases the complexity of requirements management (RM) related tasks, making the support of a RM tool necessary. However, the selection of the most appropriate RM tool can be challenging, therefore the use of a comprehensive criteria list guiding the selection becomes essential. The goal of this research is to determine whether available criteria lists include comprehensive criteria for the evaluation of RM tools to be adopted in distributed SPL requirements management. This research answers the following research questions: (1) Do currently available criteria lists for RM tool evaluation allow the assessment of tools supporting distributed SPL requirements management? (2) To what extents do criteria lists support the evaluation of RM tool general features, as well as SPL requirements and distributed collaboration related features? and (3) How would a comprehensive criteria list for the evaluation of tools used in distributed SPL requirements management look like? To answer these questions a literature review and a constructive research were conducted. The review focused on fully available criteria lists for the evaluation of RM tools, as well as research in the fields of distributed collaboration and SPL to identify tool features necessary in these activities. Based on the results obtained, the constructive research was conducted to create a framework to evaluate the available criteria lists and guide the creation of the new criteria list. The analysis of the available criteria lists left in evidence the lacking of a list with comprehensive criteria for the evaluation of tools features supporting distributed SPL requirement management. Therefore, a new list was created taking as a base the criteria list found most comprehensive and extending it with new requirements. The evaluation framework, the comparison of available criteria lists and the newly created criteria list, present a contribution to current research, however, further research is required to validate these results.
A Small Matter of Programming: Perspectives on End User Computing

From the Publisher: A Small Matter of Programming asks why it has been so difficult for end users to command programming power and explores the problems of end-user-driven application development that must be solved to afford end users greater computational power. Drawing on empirical research on existing end user systems, the book analyzes cognitive, social, and technical issues of end user programming. In particular, it examines the importance of task-specific programming languages, visual application frameworks, and collaborative work practices for end user computing with the goal of helping the designers and programmers understand and better satisfy the needs of end users who want the capability to create, customize, and extend their applications software. The ideas in the book are based on the author's research on two successful end user programming systems - spreadsheets and CAD systems - as well as other empirical research. Nardi concentrates on broad issues in end user programming, especially end users' strengths and problems, introducing tools and techniques as they are related to higher-level user issues.
Shifting interests: changes in the lexical semantics of ED-MEDIA

Large research networks naturally form complex communities with overlapping but not identical expertise. To map the distribution of professional competence in field of 'technology-enhanced learning', the lexical semantics expressed in research articles published in a representative, large-scale conference (ED-MEDIA) can be investigated and changes in the topics covered can be tracked over time. Within this contribution, the two years 2000 and 2008 are used to contrast the change in meaning structure. In both cases, first a quantitative investigation is applied, directly followed by a two-fold qualitative analysis. Results indicate that the field has opened up to new areas, thus diversifying research; at the same time, certain terminology disappears as interests shift and research is finalised for some of the underlying problems.
Robust control of a continuous stirred-tank reactor

This paper presents a robust control scheme to deal with the temperature control of a continuous stirred-tank reactor (CSTR) which exhibits significant nonlinearities and extreme parametric sensitivity. The new control scheme is robust since it can effectively weaken the harmful effects of the parameter uncertainties on the overall system. The uncertainties existing in the input part can be compensated by an parameter update mechanism involved in this control scheme. Computer simulations show that one pre-designed controller can be used to control various cases with very different plant parameters, thus avoiding the need for gain scheduling.
Ontology-based open-corpus personalization for e-learning

Conventional closed-corpus adaptive information systems control limited sets of documents in predefined domains and cannot provide access to the external content. Such restrictions contradict the requirements of today, when most of the information systems are implemented in the open document space of the World Wide Web and are expected to operate on the open-corpus content. In order to provide personalized access to open-corpus documents, an adaptive system should be able to maintain modeling of new documents in terms of domain knowledge automatically and dynamically. This dissertation explores the problem of open-corpus personalization and semantic modeling of open-corpus content in the context of e-Learning. Information on the World Wide Web is not without structure. Many collections of online instructional material (tutorials, electronic books, digital libraries, etc.) have been provided with implicit knowledge models encoded in form of tables of content, indexes, headers of chapters, links between pages, and different styles of text fragments. The main dissertation approach tries to leverage this layer of hidden semantics by extracting and representing it as coarse-grained models of content collections. A central domain ontology is used to maintain overlay modeling of students’ knowledge and serves as a reference point for multiple collections of external instructional material. In order to establish the link between the ontology and the open-corpus content models a special ontology mapping algorithm has been developed. The proposed approach has been applied in the Ontology-based Open-corpus Personalization Service that recommends and adaptively annotates online reading material. The domain of Java programming has been chosen for the proof-of-concept implementation. A controlled experiment has been organized to evaluate the developed adaptive system and the proposed approach overall. The results of the evaluation have demonstrated several significant learning effects of the implemented open-corpus personalization. The analysis of log-based data has also shown that the open-corpus version of the system is capable of providing personalization of similar quality to the close-corpus one. Such results indicate that the proposed approach successfully supports open-corpus personalization for e-Learning. Further research is required to verify if the approach remains effective in other subject domains and with other types of instructional content.
A Look at Research on Mobile Learning in K–12 Education From 2007 to the Present

Abstract The purpose of this literature review is to examine data-based studies published on mobile learning in K–12 from 2007 to the present. In total, 63 studies from 15 refereed journals were selected for analysis. The findings are organized in four themes: (a) comparison studies, (b) nocomparison studies, (c) mobilized learning, and (d) academic content areas. The findings showed research was primarily exploratory in nature and focused on understanding the educational affordances of using mobile devices in instructional practices. Affordances examined in the studies were identified within the contexts of multiple academic disciplines. Additionally, trends were observed, and critical issues to consider for future research are discussed.
Quality as a measurement of customer perception and satisfaction in mobile TLC

Quality is the key factor in the design and management of a modern and efficient mobile communications system capable of responding to the ever increasing requirements of this market, and at the same time fulfilling the needs and expectations of the user. A service provider (SP) which pays due attention to quality will be able to maintain its market position and will ultimately strengthen it. It appears essential, therefore, for SPs to equip themselves with appropriate methodologies and tools for the measuring of the quality of service (QoS) offered to users. The paper gives a general overview of the main problems regarding QoS in mobile communications and proposes a new method of dealing with them.
Sentiment analysis of Swedish social media : Using random indexing to improve cross-domain sentiment classification

Social media has grown extremely fast in recent years and in the vast number of posts being made everyday people express their opinions about all kinds of topics. These opinions are very valuable and there is a need for a way to automatically identify and extract them. This is what sentiment analysis is about but there are a number of issues related to this task. In particular the large number and diversity of the texts to analyze causes problems for ordinary methods of natural language processing. In this thesis a method utilizing a technique called Random Indexing is proposed which tries to overcome some of the issues. The conclusion is that the use of Random Indexing does aid in solving the problem but also that more work is needed in order to have a fully satisfying solution.