ppxscal/embedding_network huggingface dataset:
R2D2: regulating beam shape and rate as directionality meets diversity
Authors: Kishore Ramachandran, Ravi Kokku, Karthikeyan Sundaresan, Marco Gruteser, Sampath Rangarajan
Venue: Proceedings of the 7th international conference on Mobile systems, applications, and services (2009)

We design, implement, and evaluate a vehicular communication system that improves uplink connectivity through multi-lobe beam pattern switching on a smart antenna. Directionality and base station-diversity are two well-known, independently developed mechanisms for improving the uplink connectivity of mobile clients. In this paper, we highlight that a system combining both mechanisms can achieve significant improvement in performance with multi-lobe beams that strike a tradeoff between directionality and diversity. This is in contrast to the mere steering of narrow beams used in conventional smart antenna systems. For tractability at vehicular speeds, our R2D2 system searches through a limited set of beam patterns with different numbers of lobes, and includes a two-stage algorithm that uses both runtime adaptation and cached candidate patterns. We design and evaluate several variants of run-time adaptation that tune the number and angle of lobes in the beam, and the bit rate. The design of these algorithms is guided by both analysis and real-world measurements with a smart antenna system mounted on a vehicle. These measurements with our prototype implementation show that R2D2 can achieve an uplink throughput increase of up to 154% over pure beamsteering and 45% over pure basestation diversity.
Collaborating on Enterprise Projects using Microsoft Office Project Server 2007
Authors: Gary L. Chefetz, Dale A. Howard
Venue:  (2007)

Thank you for considering Collaborating on Enterprise Projects using Microsoft Office Project 2007. This book is for project team members who need to learn and use features in Microsoft Office Project Server 2007 through Project Web Access. The content of this book derives from Managing Enterprise Projects using Microsoft Office Project Server 2007, (ISBN: 978-1-934240-02-1) published 7/15/2007, and is specifically tailored for the collaborative team member. If you are a project manager, consider obtaining Managing Enterprise Projects for a complete learning experience and reference manual. This book is ideal for organizations that want to train resources to use Project Web Access and SharePoint to support their Enterprise Project Management efforts. Use this book for self-study, classroom learning and as a handy desk reference. Collaborating on Enterprise Projects coves all of the Project Server features available to team members.
Enabling system evolution through configuration management on the hardware-software boundary
Authors: René Krikhaar, Wim Mosterman, Niels Veerman, Chris Verhoef
Venue: Systems Engineering (2009)

As the use of software and electronics in modern products is omnipresent and continuously increasing, companies in the embedded systems industry face increasing complexity in controlling and enabling the evolution of their IT-intensive products. Traditionally, product configurations and their updates were managed separately for the hardware and software discipline. At specified release moments during the development of their products, the hardware and software were released together. But, as the usage, flexibility and complexity of software and electronics increases, and fierce competition requires shorter time-to-market and customizable products, more frequent releases of integrated hardware and software configurations becomes necessary. This evolution requires adequate configuration management both within the hard- and software disciplines and across them. In many organizations, software configuration management is more visibly established than hardware configuration management due to the inherent flexibility and complexity of software. But as the flexibility of hardware has increased through the use of configurable hardware, the need for more intense hardware configuration management increased as well. To properly enable the evolution of integrated hardware-software systems, adequate configuration management is required in both disciplines. Our article deals with just that: configuration management on the hardware-software boundary, and is mainly focused on the product development phase. The hardware-software boundary has a broad scope; in this article we focus on embedded systems containing software and custom and off-the-shelf electronic hardware, thereby concentrating on configurable hardware containing both software and hardware designs. It is important to note that the concepts of our article apply to configuration management issues that go beyond that scope. We investigated the configuration management practices in six large organizations in the embedded systems industry, including medical devices, defense equipment, optics, document processing, and semiconductor equipment. In particular, we looked at programmable-configurable hardware, as the use and complexity of this technology continue to increase. We propose a generic development cycle with real-life examples to illustrate the configuration management concepts. Then, from the sociotechnical design point of view, we raise awareness and argue that configuration management tools, processes, and its organization must be further aligned to support the complexity and interdisciplinary nature of the hardware-software boundary of evolving embedded systems. &copy; 2009 Wiley Periodicals, Inc. Syst Eng
Context Graphs -- Representing Formal Concepts by Connected Subgraphs
Authors: Jens Kötters, Heinz Schmidt, David Mcg. Squire
Venue: Proceedings of the 7th International Conference on Formal Concept Analysis (2009)

The article introduces a representation of a formal context by an undirected graph called a context graph with the formal objects being the nodes of the graph. We use as a defining property for this graph that it contains every concept extent as a connected subgraph. The graph is not uniquely defined by this property -- we focus on those graphs that are edge-minimal and present a result with respect to the number of their edges. We then study how the structure of an edge-minimal context graph can be updated to adjust to the subsequent addition of an object to the context. This leads to an incremental construction algorithm that does not require the explicit computation of formal concepts.
Windows Group Policy Administrator's Pocket Consultant
Authors: William R. Stanek
Venue:  (2009)

Here s the practical, pocket-sized reference for IT professionals who administer and support Group Policy for Windows Server(r) and Windows Client. Designed for quick referencing, this portable guide covers all the essentials for performing everyday system administration tasks. Written by an award-winning author of more than 70 computer books, this guide puts expert administration and troubleshooting advice right at your fingertips. You ll discover how to configure, manage, and troubleshoot Windows Group Policy structures, processing, and security. Featuring quick-reference tables, concise lists, and step-by-step instructions, this handy, one-stop guide provides fast, accurate answers on the spot whether at your desk or in the field.
Processing and characterisation of precision microparts from nickel-based materials
Authors: D. M. Allen, H. J. Almond, K. Bedner, M. Cabeza, B. Courtot, A. Duval, S. A. Impey, M. Saumer
Venue: Microsystem Technologies (2009)

The objective of this research was to study the influence of electroplating parameters on electrodeposit characteristics for the production of nickel (Ni) and nickel&#x2013;iron (Ni&#x2013;Fe) microparts by photoelectroforming. The research focused on the most relevant parameter for industry, which is the current density, because it determines the process time and the consumed energy. The results of the Ni and Ni&#x2013;Fe characterisations can be divided into two aspects closely linked with each other: the morphology and the hardness.
Codification, Law Article and Graphs
Authors: Danièle Bourcier, Pierre Mazzega
Venue: Proceeding of the 2007 conference on Legal Knowledge and Information Systems: JURIX 2007: The Twentieth Annual Conference (2007)

Policy makers, judges, citizens all deplore the increasing complexity of law. Codification is traditionally one of the best ways to sustain the dynamic and necessary evolution of laws. In this paper we analyze the French environmental code (2000) to understand how the drafters have organized the previous laws scattered in various fields of law into the structure of a hierarchical table of contents. Relying on graph representation, we observe this architecture through the various levels of its organization and connections with other legal corpuses. Among the lot of information that this representation brings, we will note the new function of the article of law in the pyramid of laws. The article is no more one axiom, one rule as in the Civil Code (1804): it becomes an articulation between both an upper and a lower (intra-article) hierarchy, embedded in a network of links. So doing we also find some invariant distributions --like the Pareto-Zipf one --that shape various statistical distributions of the vertices and edges of the legal graph. We will conclude by proposing new comparative perspectives between legal sources and between Codes.
The versatility of logit over probit regression analyses in estimating the strength of gear teeth
Authors: A. A. Shariff, A. Zaharim
Venue: Proceedings of the 13th WSEAS international conference on Applied mathematics (2008)

Logit and probit are two regression methods which are categorised under Generalized Linear Models. Both models can be used when the response variables in the analyses are categorical in nature. For the case of the strength of gear teeth data, it can be in terms of counted proportions, such as r teeth fail out of n teeth tested. In this paper, the two models, logit and probit are discussed and the methods of analysis are compared for simulated data sets obtained from experimental procedure called staircase design (SCD) experiment. For the analysis, the response variable is the proportion failing and the explanatory variable is the corresponding load. The analysis is also compared with the explanatory variable of logarithm of load. The population distributions of strengths considered are normal and Weibull distribution and 1000 SCD experiments are simulated. The sampling distributions of the various estimators are then compared for bias, standard deviation, and mean squared error for the two contrasting population distributions of strength. It is found that, a regression of the logit on the logarithm of load seems to be the most robust approach if normality of strengths is in doubt.
A computationally efficient method of identifying generic fuzzy models
Authors: Yue Wu, Arthur Dexter
Venue: Fuzzy Sets and Systems (2009)

There is on-going interest in the application of adaptive fuzzy model-based predictive control techniques which attempt to formulate and solve the control problem when the systems are uncertain and non-linear. This paper proposes a computational efficient method to generate a generic fuzzy relational model that can be used to initialize the model used by the controller. The methodology used in this paper is to generate the generic model from computer simulations of a set of different designs by using the ''ideal'' training data. Methods of reducing the time required to generate the required training data, and transforming a low granularity fuzzy model into a model of higher granularity, are proposed. The generation of a generic model of a cooling coil subsystem of an HVAC system is used as an example to demonstrate how these techniques can successfully identify a generic fuzzy model that is suitable for use in an adaptive fuzzy controller. Results are presented, which show that the time required to identify a high granularity, generic model can be reduced significantly.
Identification a potential wave energy location in Malaysia using GIS
Authors: K. N. Abdul Maulud, O. A. Karim, K. Sopian, Z. Md. Darus, E. E. Mohd. Ramly
Venue: Proceedings of the 10th WSEAS international conference on Mathematical methods, computational techniques and intelligent systems (2008)

Our current living standard could not be maintained without energy. The provision of energy or - more precisely- of the related energy services (e.g. heated living spaces, information, and mobility) involves a huge variety of environmental impacts which are increasingly less tolerated by the society of the 21st century. The development of a nation needs support not only from sustainable energy generation system but also clean, safe and renewable energy. No doubt in the near future, the world still needs fossil fuel because most of the primary existing technologies depend on it. Dependence on depletable sources of energy cannot guarantee the sustained development of any nation. Renewable energy is the best alternative as the source is free of such impact. The aim of the project is to conduct a preliminary study to find out potential wave energy generation for use in Malaysia by looking at a few aspects and factors related in hydraulics and hydrology. This research in Malaysia investigates potential wave energy sources including the land, the island and the sea. The data about climate information and forecast of sea condition may be derived from the Malaysia Meteorological Department used to study the wave height and wave period, wind speed and sea surface temperature around Malaysia. Finally the results from analysis are the index as a reference to summarize a grade and potential levels of locations selected. By looking forward that the technology like wave energy has great potential for future energy generation in Malaysia, the pursuit of clean, safe and sustainable renewable energy generation system requires society effort and a paradigm shift. This paper is a beginning of the research about potential of marine energy in Malaysia, focusing on mapping the potential area and location for wave energy in Malaysia.
LyeeBuilder
Authors: B. Ktari, M. Mejri, D. Godbout, H. Fujita
Venue: Proceeding of the 2005 conference on New Trends in Software Methodologies, Tools and Techniques: Proceedings of the fourth SoMeT_W05 (2005)

The Lyee methodology allows the development of a software by simply defining its requirements. More precisely, a developer has only to provide words, calculation formulae, calculation conditions and layout of screens and printouts, and then leaves in the hands of the computer all subsequent troublesome programming process, i.e. control logic aspects. The formalization of Lyee methodology led to the definition of Lyee-Calculus, a formal process algebra, that easily and naturally supports the basic concepts of the Lyee methodology. Moreover, we provided an implementation of the constructs of the Lyee-Calculus in Java language in order to concretely show the efficiency of this calculus and its suitability for the Lyee methodology. In other words, this Java implementation of the Lyee-Calculus provides a means of bridging the gap between Lyee requirement specifications and their implementations. In this paper, we present a new software development environment, LyeeBuilder, that allows to automatically generate applications from specifications using a GUI interface. This software aims to give to programmers an environment that allows them to automatically generate applications from screens and word definitions.
On the minimum corridor connection problem and other generalized geometric problems
Authors: Hans L. Bodlaender, Corinne Feremans, Alexander Grigoriev, Eelko Penninkx, René Sitters, Thomas Wolle
Venue: Computational Geometry: Theory and Applications (2009)

In this paper we discuss the complexity and approximability of the minimum corridor connection problem where, given a rectilinear decomposition of a rectilinear polygon into ''rooms'', one has to find the minimum length tree along the edges of the decomposition such that every room is incident to a vertex of the tree. We show that the problem is strongly NP-hard and give a subexponential time exact algorithm. For the special case when the room connectivity graph is k-outerplanar the algorithm running time becomes cubic. We develop a polynomial time approximation scheme for the case when all rooms are fat and have nearly the same size. When rooms are fat but are of varying size we give a polynomial time constant factor approximation algorithm.
Hiding Communication Latency with Non-SPMD, Graph-Based Execution
Authors: Jacob Sorensen, Scott B. Baden
Venue: Proceedings of the 9th International Conference on Computational Science: Part I (2009)

Reformulating an algorithm to mask communication delays is crucial in maintaining scalability, but traditional solutions embed the overlap strategy into the application. We present an alternative approach based on dataflow, that factors the overlap strategy out of the application. Using this approach we are able to reduce communication delays, meeting and in many cases exceeding performance obtained with traditional hand coded applications.
Using Short Dependency Relations from Auto-Parsed Data for Chinese Dependency Parsing
Authors: Wenliang Chen, Daisuke Kawahara, Kiyotaka Uchimoto, Yujie Zhang, Hitoshi Isahara
Venue: ACM Transactions on Asian Language Information Processing (TALIP) (2009)

Dependency parsing has become increasingly popular for a surge of interest lately for applications such as machine translation and question answering. Currently, several supervised learning methods can be used for training high-performance dependency parsers if sufficient labeled data are available. However, currently used statistical dependency parsers provide poor results for words separated by long distances. In order to solve this problem, this article presents an effective dependency parsing approach of incorporating short dependency information from unlabeled data. The unlabeled data is automatically parsed by using a deterministic dependency parser, which exhibits a relatively high performance for short dependencies between words. We then train another parser that uses the information on short dependency relations extracted from the output of the first parser. The proposed approach achieves an unlabeled attachment score of 86.52&percnt;, an absolute 1.24&percnt; improvement over the baseline system on the Chinese Treebank data set. The results indicate that the proposed approach improves the parsing performance for longer distance words.
Understanding dynamic scenes based on human sequence evaluation
Authors: Jordi Gonzílez, Daniel Rowe, Javier Varona, F. Xavier Roca
Venue: Image and Vision Computing (2009)

In this paper, a Cognitive Vision System (CVS) is presented, which explains the human behaviour of monitored scenes using natural-language texts. This cognitive analysis of human movements recorded in image sequences is here referred to as Human Sequence Evaluation (HSE) which defines a set of transformation modules involved in the automatic generation of semantic descriptions from pixel values. In essence, the trajectories of human agents are obtained to generate textual interpretations of their motion, and also to infer the conceptual relationships of each agent w.r.t. its environment. For this purpose, a human behaviour model based on Situation Graph Trees (SGTs) is considered, which permits both bottom-up (hypothesis generation) and top-down (hypothesis refinement) analysis of dynamic scenes. The resulting system prototype interprets different kinds of behaviour and reports textual descriptions in multiple languages.
On the use of small training sets for neural network-based characterization of mixed pixels in remotely sensed hyperspectral images
Authors: Javier Plaza, Antonio Plaza, Rosa Perez, Pablo Martinez
Venue: Pattern Recognition (2009)

In this work, neural network-based models involved in hyperspectral image spectra separation are considered. Focus is on how to select the most highly informative samples for effectively training the neural architecture. This issue is addressed here by several new algorithms for intelligent selection of training samples: (1) a border-training algorithm (BTA) which selects training samples located in the vicinity of the hyperplanes that can optimally separate the classes; (2) a mixed-signature algorithm (MSA) which selects the most spectrally mixed pixels in the hyperspectral data as training samples; and (3) a morphological-erosion algorithm (MEA) which incorporates spatial information (via mathematical morphology concepts) to select spectrally mixed training samples located in spatially homogeneous regions. These algorithms, along with other standard techniques based on orthogonal projections and a simple Maximin-distance algorithm, are used to train a multi-layer perceptron (MLP), selected in this work as a representative neural architecture for spectral mixture analysis. Experimental results are provided using both a database of nonlinear mixed spectra with absolute ground truth and a set of real hyperspectral images, collected at different altitudes by the digital airborne imaging spectrometer (DAIS 7915) and reflective optics system imaging spectrometer (ROSIS) operating simultaneously at multiple spatial resolutions.
DC programming techniques for solving a class of nonlinear bilevel programs
Authors: Le Thi Hoai An, Pham Dinh Tao, Nam Nguyen Canh, Nguyen Thoai
Venue: Journal of Global Optimization (2009)

We propose a method for finding a global solution of a class of nonlinear bilevel programs, in which the objective function in the first level is a DC function, and the second level consists of finding a Karush-Kuhn-Tucker point of a quadratic programming problem. This method is a combination of the local algorithm DCA in DC programming with a branch and bound scheme well known in discrete and global optimization. Computational results on a class of quadratic bilevel programs are reported.
Brain Injury Detection and Monitoring through fMRI Time Series Data Mining
Authors: Jeffrey Sumrall, Ramya Chakravarthy, Maryam Chaudry
Venue: Proceeding of the 2006 conference on Advances in Intelligent IT: Active Media Technology 2006 (2006)

The fundamental purpose of functional Magnetic Resonance Imaging (fMRI) based detection and monitoring is to provide tangible benchmarks for neuronal activity via hemodynamic response characteristics. Voxel intensity maps are calculated from normalized images, the maps are then stored in as a single dataset in order to gain knowledge from their collective analysis. At this point data mining techniques are employed to control for certain levels of treatment as well as demographic conditions. The model presented involves three stages; data collection, preprocessing, and data mining/statistical analysis. The general idea for the proposed fMRI based detection and monitoring system is to leverage high precision hidden knowledge from medical images captured for other purposes
A Case Study in JML-Assisted Software Development
Authors: Néstor Cataòo, Fernando Barraza, Daniel García, Pablo Ortega, Camilo Rueda
Venue: Electronic Notes in Theoretical Computer Science (ENTCS) (2009)

This paper presents a case study in formal software development of a plugin for a Java Desktop project management application using JML. Our goals for the case study include determining how JML-based formal methods can be incorporated in traditional software engineering practices used in the software industry and how the use of JML for modeling software requirements can enforce the programming of correct Java code. We demonstrate how JML-based formal methods can be used so as to effectively contribute to the making of decisions within a software development team.