ppxscal/embedding_network huggingface dataset:
Throughput and stability of digital and analog network coding for wireless networks with single and multiple relays
Authors: Yalin Evren Sagduyu, Dongning Guo, Randall Berry
Venue: Proceedings of the 4th Annual International Conference on Wireless Internet (2008)

We evaluate the throughput and stability properties of digital and analog network coding for wireless terminals exchanging broadcast traffic with the assistance of relay nodes. For stochastically varying traffic, the stable operation is compared under the different schemes of plain routing, and digital and analog network coding, at the packet and the signal levels, respectively. For each network coding scheme, the queue dynamics are specified for the terminal and relay nodes, and the maximum throughput region is optimized over all transmission schedules. We then give generalizations of the well-known back-pressure policy for each scheme, which accounts for the coupling of the queues due to network coding and is throughput optimal, i.e., it stabilizes the network whenever this is possible. Our initial analysis focuses on a network with a single relay node. We then discuss extensions of this to arbitrary terminal-relay configurations in a general multihop network. A general framework is established to construct the maximum throughput region and throughput optimal scheduling is jointly designed with network coding for relay networks with general channel rates. For any achievable rates in the maximum throughput region the dynamic scheduling and coding ensure that the average queue lengths at the terminal and relay nodes are asymptotically bounded.
Impact of bounded delay on throughput in multi-hop networks
Authors: Ling Wang, Yahia Tachwali, Pramode Verma, Anjan Ghosh
Venue: Journal of Network and Computer Applications (2009)

This paper presents a closed form solution relating to the impact of bounded delays on throughput in multi-hop networks. In contrast to contemporary literature that largely focuses on average delay to estimate the Quality of Service, our model focuses on an upper bound of delay, referred to as delay threshold in this paper. Traffic that exceeds the delay threshold is treated as lost throughput. The results obtained can be used in scaling resources in a multi-hop network for attaining specified levels of throughput under different thresholds of acceptable delays. Both single-hop and multi-hop transfers are addressed. The theoretical analysis presented in this paper is further corroborated by simulation. The findings presented in this paper will be very relevant to multi-hop network applications where received data that are older than a specified threshold period are not relevant and must be discarded.
Computer Animation, Second Edition: Algorithms and Techniques, 2nd edition
Authors: Rick Parent
Venue: The Morgan Kaufmann Series In Computer Graphics (2007)

What many digital animators fail to realize is that someone needs to make the software that's used to bring images to life. Without the tools, the ideas can never be materialized. In Computer Animation: Algorithms and Techniques, the concepts and formulas used behind the scenes and under the hood of contemporary animation software are clearly explained for the programmer and the technical director.Hardbound, liberally illustrated, and with an eight-page color gallery, there are six chapters and three appendices. The book starts with an overview of animation and works through some technical background information, and then delves into interpolation and basic techniques for representing 3-D motion and space on a 2-D display. Later chapters walk through advanced algorithms (kinematics, rigid body simulation, constraints) and then a discussion of ways to represent natural phenomena. There's also a focus on modeling and animating articulated figures. It's important to note that these chapters are not about which buttons to push in a given software package, but rather about the use and explanation of formulas for representing a specific simulation.Perhaps the best feature of the book is the information and samples available on a companion Web site. Rather than include a CD-ROM, which raises the cost of the book and whose information can grow stale, the reader can find sample animations and ready-to-use code snippets, as well as links to other relevant Web sites.There are any number of books available on computer animation software packages, but precious few on how they do what they do. Computer Animation: Algorithms and Techniques is an invaluable resource, a textbook for anyone interested in computer animation programming or for anyone who simply wants to get under the hood of their favorite animation application. --Mike Caputo
Student Learning and Team Formation in a Structured CSCL Environment
Authors: Nobel Khandaker, Leen-Kiat Soh, Hong Jiang
Venue: Proceeding of the 2006 conference on Learning by Effective Utilization of Technologies: Facilitating Intercultural Understanding (2006)

A computer-supported collaborative learning (CSCL) environment aims to facilitate student learning by letting them work in small teams with the support of computer technology. Two important factors that affect work in such scenario are: interaction among the students and compatibility or interactivity of the team members. I-MINDS is a tool designed to support structured Computer Supported Collaborative Learning. In I-MINDS we try to improve both the quality of student learning and the quality of student team work with the help of intelligent agents. I-MINDS facilitates student interaction through its forums and can build student teams. In our two-semester long experiment we studied the effect of the interaction environment on the learning and performance of students in face-to-face and structured CSCL scenarios. Moreover, we studied how a student's self-reported efficacy, teamwork and interaction skills affect his or her performance in face-to-face and structured CSCL settings. Our results indicate that even though students prefer face-to-face interactions; structured CSCL environment may increase their individual performance. Furthermore, we find that factors such as the difficulty of the problem or task to be solved and team member compatibility influence the quality of teamwork in structured CSCL.
Technology evolution of mobile peer-to-peer communications
Authors: Mikko V. J. Heikkinen, Sakari Luukkainen
Venue: Proceedings of the 4th Annual International Conference on Wireless Internet (2008)

We built a technology evolution analysis framework for a single case study of mobile peer-to-peer (MP2P) communications. We identified three different evolution paths for MP2P communications: Internet-driven, telecom-driven and proprietary. We used P2PSIP, IMS and Skype respectively to represent the evolution paths. According to our analysis, P2PSIP is an alternative to existing networks in situations where lower costs are desired, IMS is a foundation for operator-controlled services, and proprietary services are the first wave of MP2P communications services. We proposed the evolution of mobile client-server voice over IP services as a significant determinant for the evolution of MP2P communications services.
K-Tools: Towards Semantic Knowledge Management
Authors: Sam Chapman, Vitaveska Lanfranchi, Ravish Bhagdev
Venue: Proceedings of the 6th European Semantic Web Conference on The Semantic Web: Research and Applications (2009)

This paper details the use of Semantic Web tools for supporting networked knowledge acquisition, search and sharing in large distributed organisations. The demonstration will showcase from a user perspective an application developed to aid knowledge management in large organisations, detailing the problems and technical solutions employed.
Processing transducers' signals when determining mathematical models of force and torque in drilling 2MoNiCr175 steel
Authors: Mihaiela Iliescu, Aurelian Vlase, Sime Maturin
Venue: Proceedings of the 8th WSEAS international conference on Signal processing, robotics and automation (2009)

Whenever experimental research involves some devices for measuring certain characteristics, there are used special elements, such as transducers, and high importance has to be given when processing their "exit" signals. This article points out the importance of resistive transducers' signals processing when new mathematical models of axial force and torque are determined, in drilling 2MoNiCr175 stainless steel.
A multi-user ad-hoc resource manager for smart spaces
Authors: Gonzalo Huerta-Canepa, Dongman Lee
Venue: Proceedings of the 2008 International Symposium on a World of Wireless, Mobile and Multimedia Networks (2008)

Advancement in mobile devices makes possible to add more features to them while reducing the size. If we also consider the fact that they posses advance communications features, we can convert these devices into the central manager of users’ activities. One feature in this line is the ability to control the devices surrounding the user. Problems arise when the devices belong to a shared space. In this case we also need to consider interactions and conflicts between users. In this research we present a multi-user ad-hoc resource manager for smart spaces, which allow us to control devices present in the area, and avoid conflicts between users.
Modeling an optical diaphragm for human pulse pressure detection
Authors: K. Hasikin, N. Soin, F. Ibrahim
Venue: Proceedings of the 8th WSEAS international conference on Microelectronics, nanoelectronics, optoelectronics (2009)

This paper presents the modeling of an optical diaphragm behavior for human pulse pressure detection. In this study, the comparison between the performance of the polyimide and silicon nitride diaphragm has be analyzed. The effect of diaphragm's radius and thickness on static and frequency response are also investigated. The findings show that the polyimide diaphragm is more sensitive than the silicon nitride diaphragm. The radius of the polyimide diaphragm has more effect on the deflection, sensitivity and resonance frequency as compared to the diaphragm's thickness. It can be concluded that the polyimide diaphragm achieves the optimum performance in term of the deflection, sensitivity, and resonant frequency for human pulse pressure detection.
Incremental Verification with Error Detection, Diagnosis, and Visualization
Authors: Kai-hui Chang, David A. Papa, Igor L. Markov, Valeria Bertacco
Venue: IEEE Design Test (2009)

Invers is a fast incremental-verification system for physical-synthesis optimization that includes capabilities for error detection, diagnosis, and visualization. Using a new metric called the similarity factor, Invers can help engineers identify potential errors earlier in development. Invers employs traditional verification only when necessary to ensure completeness of the verification flow. It also provides an error visualization interface to simplify error isolation and correction.
Homeland Security Handbook, 1st edition
Authors: Jack Pinkowski
Venue: Public Administration And Public Policy (2008)

Blinded by emotional rhetoric, political posturing, and genuine fear, previous efforts to defend our way of life against aggressors intent on inflicting personal and economic destruction have proven, in hindsight, to be misguided, panicked, and reactionary. Evaluation and assessment to date is largely focused on reviewing government documents, doing little to alleviate the distorted perspectives from which we vainly attempt to invoke workable policy. In contrast to much of the current literature, Homeland Security Handbook takes a sober, analytical look at the policies, results, and lessons learned in what is still a nascent field. This comprehensive reference considers the myriad factors, implications, and ramifications involved with the practical and effective protection of our safety. Dividing contributions into five sections, this book Provides an overview and historical perspective of the worldwide threat of terrorism and debates the necessity and danger of highly-centralized government response Explores specific threats to homeland security including the exploitation of our own vulnerabilities. It explores the insidious effect of psycho-terrorism and challenges the economic and military wisdom of launching armies against a nation-less and nebulous threat Offers practical, reasoned advice from practitioners and academic experts on planning, preparedness, prevention, and recovery Reviews supporting case studies from local and foreign governmental response to security and border control Quantifies the cost of homeland security in terms of funding, as well as the hardships incurred by rash and biased actions Conscious of the multi-faceted nature of the problem, the editor combines theory and practice to address concerns in border and transportation security, emergency preparedness and response, and infrastructure protection. The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
Projection- iterative methods for solving singular integral equations in Lebesgue spaces
Authors: Feras M. Al-Faqih
Venue: Proceedings of the 15th american conference on Applied mathematics (2009)

This article is devoted for elaboration of Projection- iterative algorithms for approximate solution of Singular Integral Equations based on the collocation method. We study the case when the equations are defined on the arbitrary smooth closed contours of complex plane. Theoretical background was obtained in Lebesgue spaces.
A Novel Method for Analyzing Dynamic Complexity of EEG Signals Using Symbolic Entropy Measurement
Authors: Lisha Sun, Jun Yu, Patch J. Beadle
Venue: Proceedings of the 6th International Symposium on Neural Networks: Advances in Neural Networks - Part III (2009)

Symbolic entropy is proposed to measure the complexity of the electroencephalogram (EEG) signal under different brain functional states. The EEG data recorded from different subjects were investigated and compared with both approximate entropy (ApEn) and Shannon entropy. The experimental results show that the proposed method can effectively distinguish the complexities of two groups. The experimental results provide preliminary support for the notion that the complex nonlinear nature of brain electrical activity may be the result of isolation or impairment of the neural information transmission within the brain. It is concluded that symbolic entropy serves a better measure for EEG signals and other medical signals.
Matching Law Ontologies using an Extended Argumentation Framework based on Confidence Degrees
Authors: Cassia Trojahn, Paulo Quaresma, Renata Vieira
Venue: Proceeding of the 2009 conference on Law, Ontologies and the Semantic Web: Channelling the Legal Information Flood (2009)

Law information retrieval systems use law ontologies to represent semantic objects, to associate them with law documents and to make inferences about them. A number of law ontologies have been proposed in the literature, what shows the variety of approaches pointing to the need of matching systems. We present a proposal based on argumentation to match law ontologies, as an approach to be considered for this problem. Argumentation is used to combine different techniques for ontology matching. Such approaches are encapsulated by agents that apply individual matching algorithms and cooperate in order to exchange their local results (arguments). Next, based on their preferences and confidence, the agents compute their preferred matching sets. The arguments in such preferred sets are viewed as the set of globally acceptable arguments. We show the applicability of our model matching two legal core ontologies: LKIF and CLO.
Computational Methods in Biomedical Research, 1st edition
Authors: Ravindra Khattree, Dayanand Naik
Venue:  (2007)

Continuing advances in biomedical research and statistical methods call for a constant stream of updated, cohesive accounts of new developments so that the methodologies can be properly implemented in the biomedical field. Responding to this need, Computational Methods in Biomedical Research explores important current and emerging computational statistical methods that are used in biomedical research. Written by active researchers in the field, this authoritative collection covers a wide range of topics. It introduces each topic at a basic level, before moving on to more advanced discussions of applications. The book begins with microarray data analysis, machine learning techniques, and mass spectrometry-based protein profiling. It then uses state space models to predict US cancer mortality rates and provides an overview of the application of multistate models in analyzing multiple failure times. The book also describes various Bayesian techniques, the sequential monitoring of randomization tests, mixed-effects models, and the classification rules for repeated measures data. The volume concludes with estimation methods for analyzing longitudinal data. Supplying the knowledge necessary to perform sophisticated statistical analyses, this reference is a must-have for anyone involved in advanced biomedical and pharmaceutical research. It will help in the quest to identify potential new drugs for the treatment of a variety of diseases.
Extending the power of automated legal drafting technology
Authors: Carole D. Hafner, Marc Lauritsen
Venue: Proceeding of the 2007 conference on Legal Knowledge and Information Systems: JURIX 2007: The Twentieth Annual Conference (2007)

This paper analyzes some fundamental limits posed by the dominant paradigm presently seen in legal drafting software, and describes a new drafting system architecture that has potential to offer significant benefits in expressive power and user experience. A scenario based on a customer service representative drafting a letter in response to a consumer complaint is used to illustrate the issues and the proposed design.
Non Invasive, Cross-Sector Development and Management of Trends
Authors: Tobias Valtinat, Wolfgang Backhaus, Klaus Henning
Venue: Proceeding of the 2006 conference on Leading the Web in Concurrent Engineering: Next Generation Concurrent Engineering (2006)

AsIsKnown is a project funded within the Information Society Technologies (IST) Priority of the Sixth Framework Programme (FP6) of the European Commission. AsIsKnown represents a system especially designed for a non invasive, cross-sector development and management of trends. The aim is the simultaneous and independent use of information about cross-sector product combination trends by different producers of home textiles.
A verification framework for access control in dynamic web applications
Authors: Manar H. Alalfi, James R. Cordy, Thomas R. Dean
Venue: Proceedings of the 2nd Canadian Conference on Computer Science and Software Engineering (2009)

This paper proposes a security analysis framework for dynamic web applications. A reverse engineering process is performed over a dynamic web application to extract a role-based access control security model. A formal analysis is applied on the recovered model to check access control security properties. This framework can be used to verify that a dynamic web application conforms to access control polices specified by a security engineer.
Design and Evaluation of Physical Protection Systems, Second Edition, 2nd edition
Authors: Mary Lynn Garcia
Venue:  (2007)

Design and Evaluation of Physical Security Systems, 2e, includes updated references to security expectations and changes since 9/11. The threat chapter includes references to new threat capabilities in Weapons of Mass Destruction, and a new figure on hate crime groups in the US. All the technology chapters have been reviewed and updated to include technology in use since 2001, when the first edition was published. Garcia has also added a new chapter that shows how the methodology described in the book is applied in transportation systems. College faculty who have adopted this text have suggested improvements and these have been incorporated as well. This second edition also includes some references to the author's recent book on Vulnerability Assessment, to link the two volumes at a high level. * New chapter on transportation systems* Extensively updated chapter on threat definition* Major changes to response chapter The ACM Portal is published by the Association for Computing Machinery. Copyright © 2010 ACM, Inc. Terms of Usage Privacy Policy Code of Ethics Contact Us Useful downloads: Adobe Acrobat QuickTime Windows Media Player Real Player
Torres, a Conceptual Framework for Articulation Work across Boundaries
Authors: Federico Cabitza, Marcello Sarini, Carla Simone, Michele Telaro
Venue: Proceeding of the 2006 conference on Cooperative Systems Design: Seamless Integration of Artifacts and Conversations -- Enhanced Concepts of Infrastructure for Communication (2006)

In this paper we present Torres, a conceptual framework that supports people belonging to different groups to articulate their activities. Our work is based on observations of how healthcare practitioners manage the interactions occurring when the patients' care crosses the borders of a healthcare facility. On the basis of previous works on reconciliation and of our observations, we aim to provide a framework to understand these interactions and to computationally support them so to convey the local knowledge needed both to guarantee the continuity of care and to promote the articulation of the related activities.
Performance Analysis of Centralized versus Distributed Recovery Schemes in P2P Storage Systems
Authors: Abdulhalim Dandoush, Sara Alouf, Philippe Nain
Venue: Proceedings of the 8th International IFIP-TC 6 Networking Conference (2009)

This paper studies the performance of Peer-to-Peer Storage Systems (P2PSS) in terms of data lifetime and availability. Two schemes for recovering lost data are modeled through absorbing Markov chains and their performance are evaluated and compared. The first scheme relies on a centralized controller that can recover multiple losses at once, whereas the second scheme is distributed and recovers one loss at a time. The impact of each system parameter on the performance is evaluated, and guidelines are derived on how to engineer the system and tune its key parameters in order to provide desired lifetime and/or availability of data. We find that, in stable environments such as local area or research laboratory networks where machines are usually highly available, the distributed-repair scheme offers a reliable, scalable and cheap storage/backup solution. This is in contrast with the case of highly dynamic environments, where the distributed-repair scheme is inefficient as long as the storage overhead is kept reasonable. P2PSS with centralized-repair scheme are efficient in any environment but have the disadvantage of relying on a centralized authority. Our analysis also suggests that the use of large size fragments reduces the efficiency of the recovery mechanism.
Scientific digital libraries, interoperability, and ontologies
Authors: J. Steven Hughes, Daniel J. Crichton, Chris A. Mattmann
Venue: Proceedings of the 9th ACM/IEEE-CS joint conference on Digital libraries (2009)

Scientific digital libraries serve complex and evolving research communities. Justifications for the development of scientific digital libraries include the desire to preserve science data and the promises of information interconnectedness, correlative science, and system interoperability. Research [1] suggests single shared ontologies are fundamental to fulfilling these promises. We present a tool framework, a set of principles, and a real world case study where shared ontologies are used to develop and manage science information models and subsequently guide the implementation of scientific digital libraries. The tool framework, based on an ontology modeling tool as illustrated in Figure 1, was configured to develop, manage, and keep shared ontologies relevant within changing domains and to promote the interoperability, interconnectedness, and correlation desired by scientists.