ppxscal/embedding_network huggingface dataset:
Numerical Quadrature for Bessel Transformations with High Oscillations
Authors: Shuhuang Xiang
Venue: Numerical Analysis and Its Applications: 4th International Conference, NAA 2008, Lozenetz, Bulgaria, June 16-20, 2008. Revised Selected Papers (2009)

We explore higher order numerical quadrature for the integration of systems containing Bessel functions such as $\int_a^b f(x)J_{\nu}(rx)dx$ and $\int_a^b f(x)\cos(r_1x)J_{\nu}(rx)dx$. The decay of the error of the these methods drastically improves as frequency grows.
The design of a fuzzy cascade controller for ball and beam system: A study in optimization with the use of parallel genetic algorithms
Authors: Sung-Kwun Oh, Han-Jong Jang, Witold Pedrycz
Venue: Engineering Applications of Artificial Intelligence (2009)

In this study, we introduce a design methodology for an optimized fuzzy cascade controller for ball and beam system by exploiting the use of hierarchical fair competition-based genetic algorithm (HFCGA). The ball and beam system is a well-known control engineering experimental setup which consists of servo motor, beam and ball and exhibits a number of interesting and challenging properties when considered from the control perspective. The position of ball is determined through the control of a servo motor. The displacement change of the position of ball requires the change of the angle of the beam which determines the position angle of a servo motor. Consequently, the variation of the position of the moving ball and the ensuing change of the angle of the beam results in the change of the position angle of a servo motor. We introduce the fuzzy cascade controller scheme which consists of the outer (1st) controller and the inner (2nd) controller in a cascaded architecture. Auto-tuning of the parameters of the controller (viz. scaling factors) of each fuzzy controller is realized with the use of the HFCGA. The set-point value of the inner controller (the 2nd controller) corresponds to the position angle of a servo motor, and is given as a reference value which enters into the inner controller as the 2nd controller of the two cascaded controllers. HFCGA is a kind of a parallel genetic algorithm (PGA), which helps alleviate an effect of premature convergence being a potential shortcoming present in conventional genetic algorithms (GAs). A detailed comparative analysis carried out from the viewpoint of the performance and the design methodology, is provided for the fuzzy cascade controller and the conventional PD cascade controller whose design relied on the use of the serial genetic algorithms.
A 0.18µm 3GHz true single phase clocking divider-by-3 circuit
Authors: Masayuki Ikebe, Junichi Motohisa, Eiichi Sano
Venue: Proceedings of the 7th conference on Circuits, systems, electronics, control and signal processing (2008)

We evaluated the use of a true single phase clocking (TSPC) circuit as a high-frequency divider-by-3 circuit. This divider consists of two TSPC D-flip-flops (D-FFs) with NOR gate logic circuitry. To achieve high-speed operations as well as downsize the curcuit, the NOR functions are implemented into the TSPC D-FF. We designed the divider using a 0.18-µm RF CMOS process; the circuit is 100 × 200 µm2. In the measurements, we confirmed the frequency divided by 3 at less than 3.14 GHz clock with 2.34 W.
Some potential deadlocks in layered communications architectures
Authors: Joseph Hellerstein, Wesley W. Chu
Venue: Proceedings of the May 4-7, 1981, national computer conference (1981)

Since their introduction in the early 1970s, layered communications architectures have become widely used. Unfortunately, the limitations of these architectures have not been generally recognized. Specifically, if caution is not exercised in their design, deadlocks can occur. This paper presents several examples of such errors.
An Algorithm for Non-deterministic Object Distribution in P Systems and Its Implementation in Hardware
Authors: Van Nguyen, David Kearney, Gianpaolo Gioiosa
Venue: Membrane Computing: 9th International Workshop, WMC 2008, Edinburgh, UK, July 28-31, 2008, Revised Selected and Invited Papers (2009)

We have recently developed a prototype hardware implementation of membrane computing using reconfigurable computing technology. This prototype, called Reconfig-P, exhibits a good balance of performance, flexibility and scalability. However, it does not yet implement non-deterministic object distribution. One of our goals is to incorporate non-deterministic object distribution into Reconfig-P without compromising too significantly its performance, flexibility or scalability. In this paper, we (a) propose an algorithm for non-deterministic object distribution in P systems, and (b) describe and evaluate a prototype hardware implementation of this algorithm based on reconfigurable computing technology. The results of our evaluation of the prototype implementation show that our proposed algorithm can be efficiently implemented using reconfigurable computing technology. Therefore there is strong evidence that it is feasible to incorporate non-deterministic object distribution into Reconfig-P as desired.
Advanced illumination techniques for GPU volume raycasting
Authors: Markus Hadwiger, Patric Ljung, Christof Rezk Salama, Timo Ropinski
Venue: ACM SIGGRAPH ASIA 2008 courses (2008)

Volume raycasting techniques are important for both visual arts and visualization. They allow an efficient generation of visual effects and the visualization of scientific data obtained by tomography or numerical simulation. Thanks to their flexibility, experts agree that GPU-based raycasting is the state-of-the art technique for interactive volume rendering. It will most likely replace existing slice-based techniques in the near future. Volume rendering techniques are also effective for the direct rendering of implicit surfaces used for soft body animation and constructive solid geometry. The lecture starts off with an in-depth introduction to the concepts behind GPU-based ray-casting to provide a common base for the following parts. The focus of this course is on advanced illumination techniques which approximate the physically-based light transport more convincingly. Such techniques include interactive implementation of soft and hard shadows, ambient occlusion and simple Monte-Carlo based approaches to global illumination including translucency and scattering. With the proposed techniques, users are able to interactively create convincing images from volumetric data whose visual quality goes far beyond traditional approaches. The optical properties in participating media are defined using the phase function. Many approximations to the physically based light transport applied for rendering natural phenomena such as clouds or smoke assume a rather homogenous phase function model. For rendering volumetric scans on the other hand different phase function models are required to account for both surface-like structures and fuzzy boundaries in the data. Using volume rendering techniques, artists who create medical visualization for science magazines may now work on tomographic scans directly, without the necessity to fall back to creating polygonal models of anatomical structures.
Fast app launching with GNOME do
Authors: Kyle Rankin
Venue: Linux Journal (2009)

Use GNOME Do and its many plugins to extend desktop functionality.
Self-similar carpets over finite fields
Authors: Mihai Prunescu
Venue: European Journal of Combinatorics (2009)

In [Dann E. Passoja, Akhlesh Lakhtakia, Carpets and rugs: An exercise in numbers, Leonardo 25 (1) (1992) 69-71] an informal algorithm 'to display interesting numeric patterns' is described without any proof. We generalize this algorithm over arbitrary finite fields 픽q of characteristic p and we prove that it always generates some self-similar sets. For the prime fields 픽p the generalized algorithm produces p-1 different self-similar sets. These sets are classified according to their arithmetic and their groups of symmetry.
On minimum weight pseudo-triangulations
Authors: Oswin Aichholzer, Franz Aurenhammer, Thomas Hackl, Bettina Speckmann
Venue: Computational Geometry: Theory and Applications (2009)

In this note we discuss some structural properties of minimum weight pseudo-triangulations of point sets.
Novel modified fuzzy c-means algorithm with applications
Authors: Jiayin Kang, Lequan Min, Qingxian Luan, Xiao Li, Jinzhu Liu
Venue: Digital Signal Processing (2009)

Fuzzy c-means (FCM) clustering algorithm has been widely used in many medical image segmentations. However, the conventionally standard FCM algorithm is noise sensitive because of not taking into account the spatial information. To overcome the above problem, a novel modified FCM algorithm (called FCM-AWA later) for image segmentation is presented in this paper. The algorithm is realized by modifying the objective function in the conventional FCM algorithm, i.e., by incorporating the spatial neighborhood information into the standard FCM algorithm. An adaptive weighted averaging (AWA) filter is given to indicate the spatial influence of the neighboring pixels on the central pixel. The parameters (weighting coefficients) of control template (neighboring widow) are automatically determined in the implementation of the weighted averaging image by a predefined nonlinear function. The presented algorithm is applied to both artificial synthesized image and real image. Furthermore, the quantifications of dental plaque using proposed algorithm-based segmentation were conducted. Experimental results show that the presented algorithm performs more robust to noise than the standard FCM algorithm and another FCM algorithm (proposed by Ahmed) do. Furthermore, the results of dental plaque quantification using proposed method indicate the FCM-AWA provides a quantitative, objective and efficient analysis of dental plaque, and possesses great promise.
Expert system for integrated plant protection in pepper (Capsicum annuun L.)
Authors: L. Gonzalez-Diaz, P. Martínez-Jimenez, F. Bastida, J. L. Gonzalez-Andujar
Venue: Expert Systems with Applications: An International Journal (2009)

An expert system was developed with the aim of improving decision-making by pepper growers. Knowledge was obtained from the literature and from the experts. The knowledge was then represented in the knowledge base of the expert system in a series of IF-THEN rules. The system is supported by a data base containing information for the identification of 11 weeds, 20 insects, 14 diseases, three abiotic factors and control measures. The system is enhanced with 87 photos and drawings that assist the used in the identification process and choosing control measures. The expert system was evaluated with technicians and students. According to the validation results the system was considered very satisfactory with an average rank of 9.15 by technicians and of 8.95 by students with a statistic mode ranking 10 in all the cases. The program can be used as a decision tool for farmers and technicians and for educational purposes.
Silver Bullet Talks with Gunnar Peterson
Authors: Gary McGraw
Venue: IEEE Security and Privacy (2009)

Gary McGraw interviews Gunnar Peterson, a software security expert and a managing principal at Arctec Group, a Minneapolis-based consulting firm. His work centers around service-oriented architecture (SOA), Web 2.0, and other distributed systems. Peterson's blog, http://1raindrop.typepad.com, is devoted to topics in software security. He also edits IEEE Security Privacy magazine's Building Security In column with John Stevens from Cigital and Deborah Frincke..
Research on 6-DOF Motion Platform on PMAC
Authors: Jin-Ping Zuo, Shu-Jin Tang
Venue: Proceedings of the 2009 Second International Workshop on Knowledge Discovery and Data Mining (2009)

This paper introduces the machine structure and control principle of 6-DOF motion platform based on PMAC and describes the key technology of PC programming, which is programmed by LabWindows/CVI. The NC system uses PMAC technology, and achieves closed-loop control of PID, which shows satisfactory results in testing.
Brain Network Analyzer
Authors: Vassilis Tsiaras, Ioannis G. Tollis, Vangelis Sakkalis
Venue: Graph Drawing: 16th International Symposium, GD 2008, Heraklion, Crete, Greece, September 21-24, 2008. Revised Papers (2009)

Brain Network Analyzer is an application, written in Java, that displays and analyzes synchronization networks from brain signals. The program implements a number of network indices and visualization techniques. The program has been used to analyze networks produced by electroencephalogram data of alcoholic and control patients.
Spare parts inventory control considering stochastic growth of an installed base
Authors: Tongdan Jin, Haitao Liao
Venue: Computers and Industrial Engineering (2009)

Installed base is a measure describing the number of units of a particular system actually in use. To maintain the performance of the installed units, spare parts inventory control is extremely important and becomes very challenging when the installed base changes over time. This problem is often encountered when a manufacturer starts to deliver a new product to customers and agrees to provide spare parts to replace failed units in the future. To cope with the resulting non-stationary stochastic maintenance demand, a spare parts control strategy needs to be carefully developed. The goal is to ensure that timely replacements can be provided to customers while minimizing the overall cost for spare parts inventory control. This paper provides a model for the aggregate maintenance demand generated by a product whose installed base grows according to a homogeneous Poisson process. Under a special case where the product's failure time follows the exponential distribution, the closed form solutions for the mean and variance of the aggregate maintenance demand are obtained. Based on the model, a dynamic (Q, r) restocking policy is formulated and solved using a multi-resolution approach. Two numerical examples are provided to demonstrate the application of the proposed method in controlling spare parts inventory under a service level constraint. Simulation is utilized to explore the effectiveness of the multi-resolution approach.
Stability of operator splitting methods for systems with indefinite operators: Advection-diffusion-reaction systems
Authors: David L. Ropp, John N. Shadid
Venue: Journal of Computational Physics (2009)

This brief paper presents an A-stability result for operator splitting type time integration methods applied to advection-diffusion-reaction equations with possibly indefinite source terms. These results extend our earlier work on diffusion-reaction systems [D.L. Ropp, J.N. Shadid, Stability of operator splitting methods for systems with indefinite operators: reaction-diffusion systems, J. Comput. Phys. 203 (2) (2005) 449-466]. The A-stability result presents sufficient conditions that control both low and high wave number instabilities. A corollary shows that if L-stable methods are used for the diffusion term the high wave number instability will be controlled more easily. Numerical results are presented that verify second-order convergence for the operator splitting methods and demonstrate control of instabilities on a chemotaxis problem by use of an L-stable diffusion integrator.
QoS Management for Wireless Sensor Networks with a Mobile Sink
Authors: Rob Hoes, Twan Basten, Wai-Leong Yeow, Chen-Khong Tham, Marc Geilen, Henk Corporaal
Venue: Proceedings of the 6th European Conference on Wireless Sensor Networks (2009)

The problem of configuration of Wireless Sensor Networks is an interesting challenge. The objective is to find the settings, for each sensor node, that optimise certain task-level QoS metrics. An existing configuration method is available for tree-based static networks. We extend this method to support a mobile sink. First, the routing tree is adapted to the sink's new location, after which the parameters of the nodes are optimised. Both algorithms are distributed and localised, and therefore efficient and scalable, and are able to flexibly trade reconfiguration cost (time and energy) for quality to match the demands of the application. Various options are analysed, and evaluated in simulation.
Multimedia synchronization system for MPEG video based on quality of pictures
Venue: Proceedings of the 1996 International Conference on Multimedia Computing and Systems (1996)

Abstract: Proposes a media synchronization method for MPEG video stored in distributed databases in a computer network. The proposed method takes account not only of the video frame synchronization but also of the played-back frame sequence quality. First, we propose a quality measure for moving pictures based on the smoothness of motion, which makes use of motion vectors between frames. Then a synchronization method for MPEG video, based on such a quality measure, is proposed, and its performance is evaluated by a computer simulation, by comparing it with other media synchronization methods for MPEG video.
Simulation based decision-making for hospital pharmacy management
Authors: Alkin Yurtkuran, Erdal Emel
Venue: Proceedings of the 40th Conference on Winter Simulation (2008)

Managing healthcare delivery systems plays an important role for healthcare providers in order to have high quality service performances. Inpatient pharmacy delivery systems are one of those that have a key role in hospital's service quality. Simulation is the best tool to analyze the hospital pharmacy operations due to their inherent complexity. In this article, a simulation model is developed based on data collected from a hospital in Turkey to analyze its pharmacy delivery system. In comparison to the baseline system, two different scenarios with varying factors are investigated, seeking to minimize drug delivery time to patients. The results presented here indicate the possibility for improved system performance.
A Lower Bound on the Area Requirements of Series-Parallel Graphs
Authors: Fabrizio Frati
Venue: Graph-Theoretic Concepts in Computer Science: 34th International Workshop, WG 2008, Durham, UK, June 30 --- July 2, 2008. Revised Papers (2008)

We show that there exist series-parallel graphs requiring ¿(n logn) area in any straight-line or poly-line grid drawing. Such a result is achieved by proving that, in any straight-line or poly-line drawing of K 2,n , one side of the bounding box has length ¿(n).
Fast autonomous system traceback
Authors: Arjan Durresi, Vamsi Paruchuri, Leonard Barolli
Venue: Journal of Network and Computer Applications (2009)

Service-oriented computing (SOC) due to their distributed and lose coupled nature are very vulnerable to distributed denial of service (DDoS) attacks. IP spoofing makes it difficult for the victim to determine the packet's origin. There is a need for a mechanism that could enable real-time traceback of the origins of the attacks. In this paper, we propose a novel protocol, fast autonomous system traceback (FAST) to traceback to the attack originating autonomous systems (AS). The multifold advantages of FAST include reconstruction requires just around 5-10 packets and reconstruction takes just a few seconds. We validate the performance through extensive simulations over the datasets obtained from traceroute.
Information Security: The Emerging Standard for Corporate Compliance
Authors: Thomas J Smedinghoff
Venue:  (2008)

In today's business environment, virtually all of a company's daily transactions and all of its key records are created, used, communicated, and stored in electronic form using networked computer technology. Most business entities are, quite literally, fully dependent upon information technology and an interconnected information infrastructure. "Information Security Law: The Emerging Standard for Corporate Compliance" is designed to provide an overview to the law of information security and the standard for corporate compliance that appears to be developing worldwide.This book takes a high level view of security laws and regulations, and summarizes the global legal framework for information security that emerges from those laws. It is written from the perspective of a company that needs to comply with many laws in many jurisdictions, and needs to understand the overall framework of legal security requirements, so it can evaluate how local law fits in, and what it might do to become generally legally compliant in many jurisdictions and under many laws.
Describing Next Generation Communication Services: A Usage Perspective
Authors: Emmanuel Bertin, Noel Crespi
Venue: Proceedings of the 1st European Conference on Towards a Service-Based Internet (2008)

Telecom services are usually described from an applicative perspective. Service providers should yet describe formally what their services do for their users, in order to adapt them to user's needs and to compose them. We propose here a framework to describe communication services from a usage perspective, by describing formally the actions of the service users and of the service provider. This description is then used as a common library to compose new services and to check the consistence of these composed services.
Cost Efficient Media Streaming Algorithms for Rate-Dependent Pricing Strategies in Heterogeneous Wireless Networks
Authors: Ahmed H. Zahran, Cormac J. Sreenan
Venue: Proceedings of the 2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies (2008)

The future of wireless networking is envisioned as an integrated system of wireless radio access technologies with heterogeneous features. This heterogeneity combined with the characteristic diversity of provided services create promising opportunities for improving the utility of both operators and users. In this paper, we investigate the opportunity to reduce the average cost of streaming sessions by benefiting from the system embedded heterogeneity and streaming application buffering capability. First, we analyze the optimal streaming strategy for a theoretical infinite session. Based on this analysis, we propose pseudo-optimal and greedy-optimal adaptive media streaming algorithms for heterogeneous wireless networks. The performance of these algorithms is compared to a naive greedy streaming approach using NS2 simulations. The results show that the greedy-optimal algorithm reduces the average session cost down to 73.9% of the average cost incurred on using greedy algorithm. This cost saving is realized at an insignificant increase in signaling load and session blocking probability. Hence, we strongly recommend the developed greedy-optimal algorithm for media streaming in next-generation heterogeneous wireless networks.
A Logic Language with Stable Model Semantics for Social Reasoning
Authors: Francesco Buccafurri, Gianluca Caminiti, Rosario Laurendi
Venue: Proceedings of the 24th International Conference on Logic Programming (2008)

In this paper we present a new language based on logic programming allowing us to represent some forms of social reasoning. The nice feature of this semantics is that the interdependent individuals' requirements might result in a sort of guessing of agreed conclusions, which autonomously each individual cannot derive, thus capturing the common case of mutual influence of a community in the individuals' reasoning.