ppxscal/embedding_network huggingface dataset:
A numerical method for the stability analysis of quasi-polynomial vector fields
Authors: I. M. Gléria, A. Figueiredo, T. M. Rocha Filho
Venue: Nonlinear Analysis: Theory, Methods Applications (2003)

This paper shows the sufficient conditions for the existence of a Lyapunov function in the class of quasi-polynomial dynamical systems. We focus on the cases where the system's parameters are numerically specified. A numerical algorithm to analyze this problem is presented, which involves the resolution of a linear matrix inequality (LMI). This LMI is collapsed to a linear programming problem. From the numerical viewpoint, this computational method is very useful to search for sufficient conditions for the stability of non-linear systems of ODEs. The results of this paper greatly enlarge the scope of applications of a method previously presented by the authors.
802.11 Security, 1 edition
Authors: Bruce Potter, Bob Fleck
Venue:  (2002)

:Wireless networks have opened up new possibilities for all types of users. From typical LAN environments to wireless ISPs to ad-hoc networking, 802.11, the most popular wireless LAN protocol, is changing the way we think about networking. Wireless networks provide new security challenges for users and network administrators alike. The lack of physical security, access to free auditing tools that double as attack tools, and the ability to monitor traffic without risk of being noticed make wireless networks an easy target for malicious users. Every link of the wireless network needs to be protected in order to properly secure your data. This book provides information on the fundamentals of wireless security. Readers will understand how 802.11 networks work and where the weak points are. It is important to know the potential attacks and the real risks in deploying a wireless network before attempting to secure one. 802.11 Security provides practical solutions for all major components of an 802.11 network. Station security configurations are documented for many operating systems, including Linux, FreeBSD, OpenBSD, Mac OS X, and Windows. Real world networks contain many different operating systems, and this book will give you the tools to secure whatever is thrown your way.
Active route-maintenance protocol for signal-based communication path in ad hoc networks
Authors: Chih-Yung Chang, Shin-Chih Tu
Venue: Journal of Network and Computer Applications (2002)

Ad hoc wireless networks consist of mobile hosts in a network without base stations, and are characterized by a highly dynamic network topology. The network topology changes frequently due to host migration, signal interference and power outages, making routing maintenance a challenging consideration in designing routing protocols. This study presents an active route-maintenance protocol to prevent the current route from disconnecting. Monitoring the signal strength and stability of individual hosts allows the active node, which causes the route to have a weak connection, to issue actively a route-reestablishment instruction for selecting one of its neighbors as a candidate of active node. An enhanced active route-maintenance protocol is also proposed to reduce the probability of route breakage and enhance the route's efficiency. Performance simulation reveals that the proposed route maintenance protocol effectively reduces both the overhead and route maintenance, and alleviates route-breakage.
Simple analysis of graph tests for linearity and PCP
Authors: Johan Håstad, Avi Wigderson
Venue: Random Structures Algorithms (2003)

We give a simple analysis of the PCP with low amortized query complexity of Samorodnitsky and Trevisan [16]. The analysis also applies to the linearity testing over finite fields, giving a better estimate of the acceptance probability in terms of the distance of the tested function to the closest linear function.
Capitalizing on Paradox: The Role of Language in Transforming Organizational Identities
Authors: C. Marlene Fiol
Venue: Organization Science (2002)

A strongly identified workforce presents a paradox during times of radical organizational change. Though it may bind people together behind the change initiative, strong organizationwide identification often blinds and potentially blocks the view of new possibilities. Prior research on identity change has tended to either ignore the paradox or resolve it by advocating some middle ground such as hybrid organizational identities or group-level identifications. This paper presents an identity transformation model that capitalizes on the paradoxical tensions over time by unpacking the processes by which individual and organizational levels of identity interact. It operationalizes the model by suggesting linguistic markers that describe the different stages of the process and rhetorical techniques that leaders can use to guide people through the process. To illustrate the model and its application, the paper highlights moments across a 10-year period at Tech-Co, a high-technology company undergoing a significant identity transformation.
Simple models of network access, with applications to the design of joint rate and admission control
Authors: Michel Mandjes, Debasis Mitra, Werner Scheinhardt
Venue: Computer Networks: The International Journal of Computer and Telecommunications Networking (2003)

At the access to networks, in contrast to the core, distances and feedback delays, as well as link capacities are small, which has network engineering implications that are investigated in this paper. We consider a single point in the access network which multiplexes several bursty users. The users adapt their sending rates based on feedback from the access multiplexer. Important parameters are the user's peak transmission rate p, which is the access line speed, the user's guaranteed minimum rate r, and the bound ε on the fraction of lost data.Two feedback schemes are proposed. In both schemes the users are allowed to send at rate p if the system is relatively lightly loaded, at rate r during periods of congestion, and at a rate between r and p, in an intermediate region. For both feedback schemes we present an exact analysis, under the assumption that the users' job sizes and think times have exponential distributions. We use our techniques to design the schemes jointly with admission control, i.e., the selection of the number of admissible users, to maximize throughput for given p, r, and ε. Next we consider the case in which the number of users is large. Under a specific scaling, we derive explicit large deviations asymptotics for both models. We discuss the extension to general distributions of user data and think times.
Numerical computations to pulse splitting phenomena in the thermal waves through an absorbing medium
Authors: K. Matsuoka, K. Tomoeda
Venue: Journal of Computational and Applied Mathematics (2003)

Nonlinear diffusion with strong absorption causes "total extinction in finite time" and "finite propagation of the initial support". As the dynamical behavior of the support of pulses there is a possibility of the support to split, when the initial function has two local maxima. Thus pulse splitting phenomena appear. In this paper the difference scheme which predicts such phenomena is proposed. Moreover, the criterion for pulse nonsplitting phenomena is also given. Several numerical experiments are presented.
The gmax Handbook
Authors: Clayton Crooks
Venue:  (2003)

: Synopsis After playing the same levels or flying the same airplane over and over, many avid gamers quickly tire of their games. Now, with gmax supported games, they have a 3D modeling tool that is easy to use, comes with documentation, and includes a common framework that can be used to modify many popular games. The gmax(tm) Handbook shows you how to use this powerful application to modify actual games, such as Microsoft &reg; Flight Simulator 2002, Dungeon Siege, Quake III Arena, Trainz, and more! Key Features Use gmax with popular game packs to modify levels and characters for licensed games Shows how to model and texture with PaintShopPro Covers TRAINZ Asset Creation Studio, Siege Max game pack for Dungeon Siege, Tempest game pack for Quake III Arena, Impossible Creature Tools, LithUnwrap, and more CD-ROM includes figures and project files, ON THE CD! The CD-ROM contains all images from the book (4-color), numerous projects that use popular game packs, and these two applications: gmax 1.2 - Discreet(tm) Paint ShopPro 7.04 (30 day trial version) - Jasc Software SYSTEM REQUIREMENTS Applications and projects on this CD-ROM require a PC with Windows 98, 2000, or XP; 300MHz (or higher) processor; 128MB RAM; 300MB disk space; graphics card supporting 1024 x 768 x 16 bit color; Web browser and Internet connection to register the product; CD-ROM drive; mouse. About the Author Clayton E. Crooks II (Knoxville, TN) is a partner in Advanced Information Systems, a consulting company specializing in custom hardware and software solutions for education, small business, and government entities. His articles have appeared in Dr. Dobbs, and he is the author of Awesome Game Creation 2/E.
Networks in a Flash: Making Broadband Work for You
Authors: Hrair Aldermeshian, Thomas B. London
Venue:  (2003)

Book Description Networks in a Flash is a "how-to" guide that gives simple, straightforward, and tested recipes to network your home or office and connect it to the Internet quickly and securely. It shows how to create a network "out of the box" that is safe from Internet attacks and viruses, and that supports sharing printers and files. The authors explain cable and DSL broadband access, and wired and wireless networks, and describe where wireless network components facilitate installation and support mobility. They give step-by-step instructions for the popular versions of the Windows operating system and readily available wired and wireless network components, and details showing how to share printers and files between computers. Underlying each recipe and every example are simple principles to ensure that your network is secure from intrusions and attacks from Internet hackers. Networks in a Flash has a chapter that discusses securing a network and protecting against viruses, and one describing troubleshooting techniques, both invaluable to anyone using computers and networks. The book includes explanations of network and security concepts that educate but do not "get in the way" of setting up and running a typical home or office network. Networks in a Flash includes complete and easy-to-follow guidelines to select a wired or wireless "network plan." Itemize a purchase list of any needed network or wireless components, including a low-cost "gateway router" to provide security and sharing. Set up for cable or DSL installation. Install your network and configuring your computers. Set up virus protection. Configure your computers to share printers and files. Troubleshoot installation and day-to-day issues. Networks in a Flash is an easy to follow book for novices through experts that provides exactly the right amount of information and detail to manage the complexity of computers, software, and networks. This book is an excellent guide for networking with cable or DSL.
A new approach for visualizing UML class diagrams
Authors: Carsten Gutwenger, Michael Jünger, Karsten Klein, Joachim Kupke, Sebastian Leipert, Petra Mutzel
Venue: Proceedings of the 2003 ACM symposium on Software visualization (2003)

UML diagrams have become increasingly important in the engineering and reengineering processes for software systems. Of particular interest are UML class diagrams whose purpose is to display class hierarchies (generalizations), associations, aggregations, and compositions in one picture. The combination of hierarchical and non-hierarchical relations poses a special challenge to a graph layout tool. Existing layout tools treat hierarchical and non-hierarchical relations either alike or as separate tasks in a two-phase process as in, e.g., [Seemann 1997]. We suggest a new approach for visualizing UML class diagrams leading to a balanced mixture of the following aesthetic criteria: Crossing minimization, bend minimization, uniform direction within each class hierarchy, no nesting of one class hierarchy within another, orthogonal layout, merging of multiple inheritance edges, and good edge labelling. We have realized our approach within the graph drawing library GoVisual. Experiments show the superiority to state-of-the-art and industrial standard layouts.
On the Bernstein-type inequalities for ultraspherical polynomials
Authors: C. Giordano, A. Laforgia
Venue: Journal of Computational and Applied Mathematics (2003)

We present a survey of the most recent results and inequalities for the gamma function and the ratio of the gamma functions and study, among other things, the relation between these results and known inequalities for ultraspherical polynomials. In particular, we discuss the inequality (sin θ)λ|Pn(λ)(cos θ)| < 21-λ/Γ(λ) Γ(n + 3/2λ)/Γ(n + 1 + 1/2λ), 0 ≤ θ ≤ π, where Pn(λ)(cos θ) denotes the ultraspherical polynomial of degree n, established by Alzer (Arch. Math. 69 (1997) 487) and the one established by Durand (In: R.A. Askey (Ed.), Theory and Application of Special Functions, Proceedings of the Advanced Seminar on Mathematical Research Center, University of Wisconsin, Madison, Vol. 35, Academic Press, New York, 1975, p. 353) (sin θ)λ|Pn(λ)(cos θ)| ≤ Γ(n/2 + λ)/Γ(λ)Γ(n/2 + 1), 0 ≤ θ ≤ π.
Modelling user uncertainty for disclosure risk and data utility
Authors: Mario Trottini, Stephen E. Fienberg
Venue: International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems (2002)

In this paper we show how a simple model that captures user uncertainty can be used to define suitable measures of disclosure risk and data utility. The model generalizes previous results of Duncan and Lambert. We present several examples to illustrate how the new measures can be used to implement existing optimality criteria for the choice of the best form of data release.
Post-cognitivist HCI: second-wave theories
Authors: Victor Kaptelinin, Bonnie Nardi, Susanne Bødker, John Carroll, Jim Hollan, Edwin Hutchins, Terry Winograd
Venue: CHI '03 extended abstracts on Human factors in computing systems (2003)

Historically, the dominant paradigm in HCI, when it appeared as a field in early 80s, was information processing ("cognitivist") psychology. In recent decades, as the focus of research moved beyond information processing to include how the use of technology emerges in social, cultural and organizational contexts, a variety of conceptual frameworks have been proposed as candidate theoretical foundations for "second-wave" HCI and CSCW. The purpose of this panel is to articulate similarities and differences between some of the leading "post-cognitivist" theoretical perspectives: language/ action, activity theory, and distributed cognition.
Integrated analysis of performances of façades for indoor comfort purposes
Authors: M. R. Giuffrè, A. Nucara, M. Pietrafesa, G. Rizzo
Venue: Development and application of computer techniques to environmental studies (2002)

Some guidelines for a method able to evaluate different physical characteristics of building façades, equipped with glazed surfaces, and of indoor environments in order to attain indoor comfort conditions are proposed.New graphs are introduced, showing at the same time the behaviours of several technical-physical parameters of walls, in order to allow comparative analysis of different design configurations in terms of acoustics, lighting and heat transfer properties. Similar graphs are also constructed with reference to parameters characteristic of indoor environment, in order to allow synthetic analysis of comfort conditions.The method would represent a contribution toward the definition of a tool devoted to define integral quality indexes of buildings, and, thus, toward the evaluation of environmental sustainability of buildings as well; as that it would be placed within the field of a more environmentally conscious design of buildings. Moreover, the method is also useful for automatic control of indoor comfort conditions in intelligent buildings.
Entity identification of fuzzy multidatabase systems with incompatible keys
Authors: Z. M. Ma, W. J. Zhang, W. Y. Ma, F. Mili
Venue: Web-enabled systems integration: practices and challenges (2003)

Database schema integration is an important discipline for constructing heterogeneous multidatabase systems on one hand. On the other hand, fuzzy information has been introduced into relational databases and studied extensively. However, the issues of integrating local fuzzy relations are rarely addressed. In this chapter, we focus on schema integration of fuzzy multidatabase systems. In particular, we develop a method for identifying the entities in fuzzy multidatabase integration with incompatible keys.
A note on solutions to the maximal expected covering location problem
Authors: Fernando Y. Chiyoshi, Roberto D. Galvão, Reinaldo Morabito
Venue: Computers and Operations Research (2003)

The maximal expected covering location problem (MEXCLP) and its adjusted counterpart (AMEXCLP) compute expected coverage arising only from unqueued calls, whereas the interactive use of the hypercube queueing model (HQM) considers both unqueued and queued calls in this computation. In this note we show that the three models are not strictly comparable because of the structural differences in their objective functions and that, when using HQM, it is important to state clearly the factor being used to express traveling time in terms of service time units.
Vacuum packing: extracting hardware-detected program phases for post-link optimization
Authors: Ronald D. Barnes, Erik M. Nystrom, Matthew C. Merten, Wen-mei W. Hwu
Venue: Proceedings of the 35th annual ACM/IEEE international symposium on Microarchitecture (2002)

This paper presents Vacuum Packing, a new approach to profile-based program optimization. Instead of using traditional aggregate or summarized execution profile weights, this approach uses a transparent hardware profiler to automatically detect execution phases and record branch profile information for each new phase. The code extraction algorithm then produces code packages that are specially formed for their corresponding phases. The algorithm compensates for the incomplete and often incoherent branch profile information that arises due to the nature of hardware profilers. The technique avoids unnecessary code replication by focusing on hot code, making efficient connections between the original code and the new code, linking code packages at select points to facilitate phase transitions, and providing a platform for efficient optimization. We demonstrate that using a concise set of profile information from a hardware profiler, we can generate code packages, specialized for each phase of execution, that capture more than 80% of the average total program execution. We further show that the approach is very effective in extracting code regions that capture the phasing behavior of programs, that the code size increase is moderate, and that the code regions benefit from sample optimizations.
Visual hierarchical dimension reduction for exploration of high dimensional datasets
Authors: J. Yang, M. O. Ward, E. A. Rundensteiner, S. Huang
Venue: Proceedings of the symposium on Data visualisation 2003 (2003)

Traditional visualization techniques for multidimensional data sets, such as parallel coordinates, glyphs, and scatterplot matrices, do not scale well to high numbers of dimensions. A common approach to solving this problem is dimensionality reduction. Existing dimensionality reduction techniques usually generate lower dimensional spaces that have little intuitive meaning to users and allow little user interaction. In this paper we propose a new approach to handling high dimensional data, named Visual Hierarchical Dimension Reduction (VHDR), that addresses these drawbacks. VHDR not only generates lower dimensional spaces that are meaningful to users, but also allows user interactions in most steps of the process. In VHDR, dimensions are grouped into a hierarchy, and lower dimensional spaces are constructed using clusters of the hierarchy. We have implemented the VHDR approach into XmdvTool, and extended several traditional multidimensional visualization methods to convey dimension cluster characteristics when visualizing the data set in lower dimensional spaces. Our case study of applying VHDR to a real data set supports our belief that this approach is effective in supporting the exploration of high dimensional data sets.
What is important for realizing an autonomous interactive robot?
Authors: Takanori Komatsu, Kentaro Suzuki, Natsuki Oka, Kazuhiro Ueda, Kazuo Hiraki
Venue: Proceedings of the seventh international conference on simulation of adaptive behavior on From animals to animats (2002)

The requirements for developing an autonomous interactive robot for smooth man-machine interaction were determined by means of experiment: The game "Pong" was played by a pair of subjects (one is an operator and the other is a teacher) who did not share the same language. The results of the experiment revealed two phenomena. First, the process of understanding the instructions can be regarded as a reinforcement learning processes based on different rewards (i.e., one reward for successful game action or the other one from the teacher's high-pitched voice for the wrong action). The second was mutual adaptation in which subjects learned to respond appropriately to one another's behavior. It is expected that these two phenomena can be applied to an autonomous interactive robot that can establish intimate communication with humans.
Inference for negativist theory using numerically computed rejection regions
Authors: Derrick P. Reagle, H. D. Vinod
Venue: Computational Statistics Data Analysis (2003)

A negativist theory is a theory that asserts that an affect is absent. Negativist theories are common in statistics and require a test procedure to avoid biasing the conclusions in favor of accepting the theory. New critical value tables are provided and computational methods are introduced to ease practical difficulties with the resulting non-contiguous interval null. Simulations compare the power function of negativist testing to traditional hypothesis testing. A case study, using Canadian stock market data, does not always support efficient markets (an example of a negativist theory) and reverses previous studies using positivist hypothesis tests.
Efficient System-Level Functional Verification Methodology for Multimedia Applications
Authors: Miroslav Cupák, Francky Catthoor, Hugo J. De Man
Venue: IEEE Design Test (2003)

Multimedia application design exploration should begin at the system level, to meet low-power and minimum-area requirements. Existing validation techniques mainly concentrate on lower abstraction levels. This system-level methodology combines formal verification of loop-oriented transformations with correctness verification of arithmetic constructs and related control flows. A videoconferencing-decoder example illustrates the methodology's efficiency.
Designing a mobile terminal for horse aficionados
Authors: Kaisa Still, Minna Isomursu, Pekka Isomursu, Mika Mustonen, Jari Ijäs
Venue: CHI '03 extended abstracts on Human factors in computing systems (2003)

In this paper we describe the development and use of a novel, practical approach to the design of a mobile multimedia terminal for a virtual community. The specific design goal was a dedicated mobile terminal concept for horse aficionados who belong to the virtual stables community. We had to use a creative approach since the design was for a device of non-existent type, and to be used in a virtual environment by an atypical and challenging user segment. Using this approach we were able to get valuable contribution from the potential users to the design of the new terminal.