ppxscal/embedding_network huggingface dataset:
The role of learning goals in the design of ILEs: Some issues to consider
Authors: Erika Martínez-Mirón, Amanda Harris, Benedict du Boulay, Rosemary Luckin, Nicola Yuill
Venue: Proceeding of the 2005 conference on Artificial Intelligence in Education: Supporting Learning through Intelligent and Socially Informed Technology (2005)

Part of the motivation behind the evolution of learning environments is the idea of providing students with individualized instructional strategies that allow them to learn as much as possible. It has been suggested that the goals an individual holds create a framework or orientation from which they react and respond to events. There is a large evidence-based literature which supports the notion of mastery and performance approaches to learning and which identifies distinct behavioural patterns associated with each. However, it remains unclear how these orientations manifest themselves within the individual: an important question to address when applying goal theory to the development of a goal-sensitive learner model. This paper exposes some of these issues by describing two empirical studies. They approach the subject from different perspectives, one from the implementation of an affective computing system and the other a classroom-based study, have both encountered the same empirical and theoretical problems: the dispositional/situational aspect and the dimensionality of goal orientation.
Genetical programming evolving algorithms
Authors: Mircea Iosif Neamtu
Venue: Proceedings of the 10th WSEAS international conference on Mathematical methods, computational techniques and intelligent systems (2008)

By using genetically and evolving algorithms, the present paper presents the way of forming of a 4-tree. Why a 4 tree? Starting from the premise that any of the two life partners has two parents on his/her own: By using the information from the inherited genetically luggage, any arrangement of the letters of an alphabet (arranged randomly, in which every letter stands for a certain person from that family), after following the pattern from the generated tree, will result the same genealogical tree characterically for that family. The understanding of this article will be finalized by using an animation written in the Java language.
A multi-rate MAC protocol for mobile ad hoc networks and its cooperative extension
Authors: Cong Lin, Yong Xiang, Heming Cui
Venue: Proceedings of the 4th Annual International Conference on Wireless Internet (2008)

Strategies for achieving high communication throughput and efficient energy saving are research hot spots in the area of mobile ad hoc networks (MANETs). Most previous works focus only on one of the optimization goals. This paper primarily contributes a Multi-Rate Medium Access Control (MAC) protocol (MR-MAC) operating in the 802.11g environment. This protocol economizes on energy for low traffic scenarios and maintains high throughput under heavy traffic conditions. MR-MAC utilizes rate adaption and estimation of channel occupation time, thus enabling it to choose a transmission rate which satisfies the requirement of each flow. In doing so, it efficiently lowers the power consumption caused by an unnecessary high transmission rate. Another significant contribution of this paper is the Cooperative Multi-Rate MAC protocol (CMR-MAC) which balances power consumption while ensuring energy efficiency. The main idea of CMR-MAC is the active acceleration of the high energy nodes' transmission rate within the area surrounding a low-energy node. This reduces channel occupation time which, in turn, helps the low energy nodes save energy. Simulation results show that MR-MAC outperforms Receiver-Based Auto-Rate (RBAR) by 40% in terms of energy efficiency, yet maintains a comparable throughput with the latter. Meanwhile, CMR-MAC is about 20% to 30% superior to MR-MAC in network lifetime and total number of delivered packets, respectively.
Performance Profiling for OpenMP Tasks
Authors: Karl Fürlinger, David Skinner
Venue: Proceedings of the 5th International Workshop on OpenMP: Evolving OpenMP in an Age of Extreme Parallelism (2009)

Tasking in OpenMP 3.0 allows irregular parallelism to be expressed much more easily and it is expected to be a major step towards the widespread adoption of OpenMP for multicore programming. We discuss the issues encountered in providing monitoring support for tasking in an existing OpenMP profiling tool with respect to instrumentation, measurement, and result presentation.
Participatory design for social development: a South African case study on community-based health information systems
Authors: Elaine Byrne, Sundeep Sahay
Venue: Information Technology for Development (2007)

In this paper, the role of participation within the domains of information system (IS) research and social development is analyzed. Specifically, we examine how the process of IS development, and the IS itself, can reflect and shape the status of social development. Traditionally, participatory design (PD) research in IS has focused on business contexts in the Western world, with minimal application to developing country settings, especially in the context of social development. This paper seeks to contribute to developing these understandings and bases its analysis on a case study of a community-based health IS in South Africa. The case study involved the design and development of a community-based child health IS in a rural area of South Africa. Nationally, the formal district health 1S in South Africa includes data only on those people who access health services through the health facilities. The premise behind developing a community-based child health IS was to include all the people living in that district in the district health 1S. Analysis of the case study reveals three ways in which traditional PD needs reconceptualization. First, it is not only the users of the IS who should participate, but also those individuals who are affected by the IS, even when those individuals have no direct interaction with the system itself. Second, whereas there is some recognition in PD literature of the need for the participation of people at different levels vertically distributed within an organization, there has been little recognition of the value of involving actors outside the organization or sector. Third, the capacity of the users and those impacted by the system needs to be developed to ensure effective participation in the IS design and development processes. These three approaches to PD in IS, whose purpose is to contribute to social development, are essential components of a participatory strategy.
Subclass of harmonic univalent functions with respect to 2k-symmetric conjugate points
Authors: Maslina Darus, Khalifa Al-Shaqsi
Venue: Proceedings of the 13th WSEAS international conference on Applied mathematics (2008)

For functions f = h + g which are harmonic, sense-preserving and univalent in the open unit disk U = {z : |z| < 1} with f(0) = h(0) = fz(0) - 1 = 0, we introduce new classes of harmonic starlike and convex with respect to 2k-symmetric conjugate points. Various properties are obtained here.
Modeling, simulation and control of photovoltaic power system
Authors: Monica Leba, Emil Pop, Camelia Tabacaru-Barbu, Petre Vamvu
Venue: Proceedings of the 4th WSEAS/IASME international conference on Dynamical systems and control (2008)

The main objective of this paper is to determine the Solar Photovoltaic and its appropriate controller mathematical models, to validate them through simulation results in order to practically design such a system. In this paper we consider a Photovoltaic Solar system consisting of the solar radiation, the photovoltaic panel, the power batteries, the DC/AC inverter and the controller. Each part of this system is analyzed, modeled and simulated. At the end of the paper the full system is modeled and simulated. The simulation results are as expected and validate the developed mathematical models.
EpiList II: Explicit Instructions for Development of Generic Cognitive Skills
Authors: Ghee Ming Goh, Chai Quek
Venue: Proceeding of the 2005 conference on Towards Sustainable and Scalable Educational Innovations Informed by the Learning Sciences: Sharing Good Practices of Research, Experimentation and Innovation (2005)

The importance of cognitive skills in human learning and reasoning has grown progressively throughout the years. This motivates the search for a knowledge representation that supports the development of a computational algorithm that performs as well as instructs such cognitive skills. Cognitive skills can be broadly divided into two types; specific and generic cognitive skills. EpiList I is an ITS that develops generic cognitive skills namely classification, generalization, and comparison skills. However, EpiList I develops the skills implicitly in the tutorials that explicitly tutors the student on the domain knowledge. This is a major weakness of EpiList I in developing cognitive skills; namely: classification, generalization and comparison. EpiList II incorporates explicit instructions to develop the cognitive skills in EpiList I. The explicit instructions in EpiList II monitor, tutor, and assess the student's competency in the cognitive skills. The explicit instruction is equivalent to a closed-loop system.
Deontic Logic Reasoning for Maintaining Ontology Consistency in Agent Networks
Authors: Krzysztof Juszczyszyn, Grzegorz Kołaczek
Venue: Proceedings of the Third KES International Symposium on Agent and Multi-Agent Systems: Technologies and Applications (2009)

In this paper we propose a framework for guiding the processes of ontology alignment and negotiation in an multiagent environment. The information about the structure of the actual communication network and agent roles is used to support decisions about the operations of ontology alignment. The framework is based on the Deontic Logic which is used for reasoning.
Data quality from crowdsourcing: a study of annotation selection criteria
Authors: Pei-Yun Hsueh, Prem Melville, Vikas Sindhwani
Venue: Proceedings of the NAACL HLT 2009 Workshop on Active Learning for Natural Language Processing (2009)

Annotation acquisition is an essential step in training supervised classifiers. However, manual annotation is often time-consuming and expensive. The possibility of recruiting annotators through Internet services (e.g., Amazon Mechanic Turk) is an appealing option that allows multiple labeling tasks to be outsourced in bulk, typically with low overall costs and fast completion rates. In this paper, we consider the difficult problem of classifying sentiment in political blog snippets. Annotation data from both expert annotators in a research lab and non-expert annotators recruited from the Internet are examined. Three selection criteria are identified to select high-quality annotations: noise level, sentiment ambiguity, and lexical uncertainty. Analysis confirm the utility of these criteria on improving data quality. We conduct an empirical study to examine the effect of noisy annotations on the performance of sentiment classification models, and evaluate the utility of annotation selection on classification accuracy and efficiency.
Power Management in Mobile Devices
Authors: Findlay Shearer
Venue: Communications Engineering (2007)

Sealed Lead Acid.Nickel Cadmium.Lithium Ion.How do you balance battery life with performance and cost?This book shows you how!Now that "mobile" has become the standard, the consumer not only expects mobility but demands power longevity in wireless devices. As more and more features, computing power, and memory are packed into mobile devices such as iPods, cell phones, and cameras, there is a large and growing gap between what devices can do and the amount of energy engineers can deliver. In fact, the main limiting factor in many portable designs is not hardware or software, but instead how much power can be delivered to the device. This book describes various design approaches to reduce the amount of power a circuit consumes and techniques to effectively manage the available power.Power Management Advice On:.Low Power Packaging Techniques.Power and Clock Gating.Energy Efficient Compilers.Various Display Technologies.Linear vs. Switched Regulators.Software Techniques and Intelligent Algorithms * Addresses power versus performance that each newly developed mobile device faces* Robust case studies drawn from the author's 30 plus years of extensive real world experience are included* Both hardware and software are discussed concerning their roles in power
Painting the Bike Shed
Authors: George V. Neville-Neil
Venue: Queue (2009)

A sure-fire technique for ending pointless coding debates
An Approximate Model for Bidders in Sequential Automated Auctions
Authors: Erol Gelenbe, Kumaara Velan
Venue: Proceedings of the Third KES International Symposium on Agent and Multi-Agent Systems: Technologies and Applications (2009)

In this paper, we propose a probabilistic model to study the interaction of bidder and seller agents in sequential automated auctions. We consider a designated "special bidder" (SB) who arrives at an auction and observes the ongoing activities among a number of bidders and the seller jointly, as a stochastic system that is parameterised by the rate of the bidding and selling events. The auction is modelled as a random process with discretised state-space, where the state-space represents the recently attained price for the good. We distinguish the statistical properties of the SB from that of the others, and isolate the system states that denote the desirable outcomes for the SB. In this manner, we define the measures that are of interest to the SB: its winning probability, the average time it takes to purchase an item, and its expected savings with respect to the maximum payable. For tractability, we introduce an approximately equivalent model that yields convenient and closed form expressions of these measures with minimal loss in the accuracy. We examine the effects of the SB's time to bid, and study how decisions may be taken to balance the trade-offs between its interests.
Learning complex robot control using evolutionary behavior based systems
Authors: Yohannes Kassahun, Jakob Schwendner, Jose de Gea, Mark Edgington, Frank Kirchner
Venue: Proceedings of the 11th Annual conference on Genetic and evolutionary computation (2009)

Evolving a monolithic solution for complex robotic problems is hard. One of the reasons for this is the difficulty of defining a global fitness function that leads to a solution with desired operating properties. The problem with a global fitness function is that it may not reward intermediate solutions that would ultimately lead to the desired operating properties. A possible way to solve such a problem is to decompose the solution space into smaller subsolutions with lower number of intrinsic dimensions. In this paper, we apply the design principles of behavior based systems to decompose a complex robot control task into subsolutions and show how to incrementally modify the fitness function that (1) results in desired operating properties as the subsolutions are learned, and (2) avoids the need to learn the coordination of behaviors separately. We demonstrate our method by learning to control a quadrocopter flying vehicle.
On the implementation of a robotic assistant for the elderly: a novel approach
Authors: Ioan Susnea, Grigore Vasiliu, Adrian Filipescu, George Coman
Venue: Proceedings of the 7th WSEAS international conference on Computational intelligence, man-machine systems and cybernetics (2008)

This paper describes an experiment aimed to demonstrate that a distributed system of embedded microcontrollers, wherein a number of control modules are located on the mobile robot, while others are deployed in an "intelligent environment" can significantly reduce the cost of developping a robotic assistant for the elderly and disabled. The structure of the experimental setup is described in detail, as well as the main algorithms used for each individual task: path following, obstacle avoidance, data acquisition. In the experiment described, didactic mobile robots (Pioneer3-DX and Peoplebot, from MobileRobots) were used, but the entire solution can be easily ported for the implementation of an intelligent wheelchair, capable either to carry an elderly or disabled person, or to move independently in a smart environment, as a sensorial extension of the assisted individual.
Detecting Mammographic Abnormalities from Image Registration Results
Authors: Robert Martí, David Raba, Caroline Rubin, Reyer Zwiggelaar
Venue: Proceeding of the 2005 conference on Artificial Intelligence Research and Development (2005)

One of the applications of image registration is to assess object differences from various images that have been spatially correlated. This paper discusses the use of features extracted from subtracted registered images in a classification framework with an aim to detect abnormal mammograms. Both quantitative and qualitative results are provided, which show that although non-optimal classification is obtained, region features extracted after registration can be used to discriminate between normal and abnormal mammograms.
A Framework for Problem-Solving Knowledge Mining from Users' Actions
Authors: Roger Nkambou, Engelbert Mephu Nguifo, Olivier Couturier, Philippe Fournier-Viger
Venue: Proceeding of the 2007 conference on Artificial Intelligence in Education: Building Technology Rich Learning Contexts That Work (2007)

In this paper, we present an approach to capture problem-solving knowledge using a promising technique of data and knowledge discovery based on a combination of sequential pattern mining and association rules discovery.
Energy-aware equipment for next-generation networks
Authors: Raffaele Bolla, Roberto Bruschi, Andrea Ranieri
Venue: Proceedings of the 4th International Conference on Future Internet Technologies (2009)

Besides a more widespread sensitivity to ecological issues, the interest in energy-efficient network technologies springs from heavy and critical economic needs, since both energy cost and network electrical requirements show a continuous growth, with an alarming trend over the past years. In this contribution, we explore and try to evaluate the feasibility and the impact of power management mechanisms on network equipment performance. We discuss and characterize how these energy-aware enhancements can be applied inside device architectures working in access and core networks. Finally, we show how a state-of-the-art multi-Core SW Router based on COTS HW can effectively modulate the trade-off between its energy requirements and network performance.
Limitation of telematic applications from the viewpoint of processing capacity
Authors: Tomas Brandejsky
Venue: Proceedings of the 2009 Euro American Conference on Telematics and Information Systems: New Opportunities to increase Digital Citizenship (2009)

In this paper, the discussion of limits of telematic systems is presented. These limits of applicability of telematic system are analyzed from the viewpoint of mental processing capacity, as it is know from computer science are.
Robust multithreaded applications
Authors: Lorenzo Alvisi
Venue:  (2008)

This thesis discusses techniques for improving the fault tolerance of multithreaded applications. We consider the impact on fault tolerance methods of sharing address space and resources. We develop techniques in two broad categories: conservative multithreaded fault-tolerance (C-MTFT), which recovers an entire application on the failure of a single thread, and optimistic multithreaded fault-tolerance (O-MTFT), which recovers threads independently as necessary. In the latter category, we provide a novel approach to recover hung threads while improving recovery time by managing access to shared resources so that hung threads can be restarted while other threads continue execution.
Perceiving the lengths of real and virtual objects using kinesthetic touch
Authors: Ravikiran B. Singapogu, Christopher C. Pagano, Timothy C. Burg
Venue: Proceedings of the 47th Annual Southeast Regional Conference (2009)

Humans use their kinesthetic haptic sense for a variety of day-to-day tasks. While manipulating objects using this sensory channel, which corresponds to signals arising in the muscles and joints, it has been shown that humans can perceive several characteristics of the objects that are being held or wielded. For example, the length of a baseball bat can be estimated without but the aid of vision by wielding it. There have been over a hundred studies that have sought to understand the perceptual basis of these judgments. Seminal work conducted by [7] and [8] has suggested that the haptic perception of length during wielding is related to the Inertia tensor of the wielded object. Studies have shown high correlations between the inertia tensor and various haptic properties like length [1], height [9, 10], orientation of the object [3] and the position of the hand grasp [4, 5]. All of these studies have shown the central role of the inertia tensor as the perceptual basis for making haptic judgments of object properties.
Development of anthropomorphic prosthesis hand H3and its control
Authors: Tae Sung Kim, Jong Hyeon Park
Venue: Proceedings of the 4th WSEAS/IASME international conference on Dynamical systems and control (2008)

This paper proposes H3, an anthropomorphic prosthesis hand with 5 fingers and human hand size. It consists of the combination of direct actuated and underactuated system for a dexterous grip. The H3 also has modularized 2 DOF of MCP mechanism in a thumb for power grip. The adduction-abduction and antepositon-retroposition movements are generated by this structure of thumb which is the function of addubtor pollicis and thenar muscles. A direct actuated system of index finger and underactuated system of the other fingers without thumb and index finger adopt for power grip and precision grip. The joint of DIP movements in each fingers are generated by extension spring system which give the functions of extension and flexion similar to a human hand. The motions of H3 are simulated with commercial software called RecurDyn. The hand is controlled using a stiffness control with force feedback for stable and dexterous grips.
Sketching Tangible Interfaces: Creating an Electronic Palette for the Design Community
Authors: Matthew Cottam, Katie Wray
Venue: IEEE Computer Graphics and Applications (2009)

Until very recently, the typical home computer user accessed the machine's software and processing capabilities solely through the physical interfaces of a mouse, keyboard, and monitor. Everyone, from software designers to industrial designers to Web site designers, relied on these elements to be the physical-interaction method that users employed to access their product. Today, interface designers can no longer assume that the interaction between a user and a digital interface occurs only, or most effectively, through traditional devices such as keyboards, mice, and number pads. Tangible interfaces and ubiquitous-computing technologies are changing the human relationship to computing technology, and designers must take this into account when creating products and services. In this article the authors describe some of the tools available for this purpose, including proprietary, open-source, and custom solutions.