ppxscal/embedding_network huggingface dataset:
Topic-Focus Articulation from the Semantic Point of View
Authors: Marie Duží
Venue: Proceedings of the 10th International Conference on Computational Linguistics and Intelligent Text Processing (2009)

In the paper we show that sentences differing only in topic-focus articulation have different logical structures, and thus they also have different truth-conditions. Our analysis is based on the procedural semantics of Transparent Intensional Logic (TIL) assigning to sentences hyperpropositions as their structured meanings. We analyse the phenomena of presupposition connected with a topic and allegation triggered by a focus of a sentence so that relevant consequences can be formally derived. 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
A Double Layers Detection for DoS Based on the Danger Theory
Authors: Junmin Zhang, Yiwen Liang
Venue: Proceedings of the 2009 International Conference on Computer Modeling and Simulation (2009)

As one of the most common network attacks, Denial of service (DoS) usually uses reasonable service requests to take excessive computing and network resources, thus causes the legitimate users to be unable to obtain the service responses. But now little research has performed within the area. This aim of the paper is to develop a double layers detection system for DoS based on the DCs (Dendritic Cells) – T cells interaction mechanism of the Danger Theory in immunology. DCs fuse the multiple signals and present the correlated antigens to T cells, and T cells are responsible for the detection for the structure of the antigens. A large number of semi-connections can be viewed as antigens and the corresponding behavior information of the system and network triggered by these semi-connections can be viewed as signals. The theoretic analysis shows that the method of DCs emphasizing the detection of the signals and T cell emphasizing the detection of the corresponding antigens has a good prospect in the application of DoS detection.
Valuation of electricity swing options by multistage stochastic programming
Authors: Gido Haarbrücker, Daniel Kuhn
Venue: Automatica (Journal of IFAC) (2009)

Electricity swing options are Bermudan-style path-dependent derivatives on electrical energy. We consider an electricity market driven by several exogenous risk factors and formulate the pricing problem for a class of swing option contracts with energy and power limits as well as ramping constraints. Efficient numerical solution of the arising multistage stochastic program requires aggregation of decision stages, discretization of the probability space, and reparameterization of the decision space. We report on numerical results and discuss analytically tractable limiting cases.
Safe Formulas in the General Theory of Stable Models (Preliminary Report)
Authors: Joohyung Lee, Vladimir Lifschitz, Ravi Palla
Venue: Proceedings of the 24th International Conference on Logic Programming (2008)

Safe first-order formulas generalize the concept of a safe rule, which plays an important role in the design of answer set solvers. We show that any safe sentence is equivalent, in a certain sense, to the result of its grounding--to the variable-free sentence obtained from it by replacing all quantifiers with multiple conjunctions and disjunctions. It follows that a safe sentence and the result of its grounding have the same stable models, and that stable models of a safe sentence can be characterized by a formula of a simple syntactic form.
Parallel machine earliness/tardiness scheduling problem under the effects of position based learning and linear/nonlinear deterioration
Authors: M. Duran Toksarı, Ertan Güner
Venue: Computers and Operations Research (2009)

This paper considers a parallel machine earliness/tardiness (ET) scheduling problem with different penalties under the effects of position based learning and linear and nonlinear deterioration. The problem has common due-date for all jobs, and effects of learning and deterioration are considered simultaneously. By the effects of learning we mean that the job processing time decreases along the sequence of partly similar jobs, and by the effects of deterioration we mean slowing performance or time increases along the sequence of jobs. This study shows that optimal solution for ET scheduling problem under effects of learning and deterioration is V-shape schedule under certain agreeable conditions. Furthermore, we design a mathematical model for the problem under study and algorithm and lower bound procedure to solve larger test problems. The algorithm can solve problems of 1000 jobs and four machines within 3s on average. The performance of the algorithm is evaluated using results of the mathematical model.
Interactive Focus and Context Visualization for Augmented Reality
Authors: Denis Kalkofen, Erick Mendez, Dieter Schmalstieg
Venue: Proceedings of the 2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality (2007)

In this article we present interactive Focus and Context (F+C) visualizations for Augmented Reality (AR) applications. We demonstrate how F+C visualizations are used to affect the user's perception of hidden objects by presenting contextual information in the area of augmentation. We carefully overlay synthetic data on top of the real world imagery by taking into account the information that is about to be occluded. Furthermore, we present operations to control the amount of augmented information. Additionally, we developed an interaction tool, based on the Magic Lens technique, which allows for interactive separation of focus from context. We integrated our work into a rendering framework developed on top of the Studierstube Augmented Reality system. We finally show examples to demonstrate how our work benefits AR.
A new wastewater bacteria classification with microscopic image analysis
Authors: Chen Cunshe, Li Xiaojuan
Venue: Proceedings of the 12th WSEAS international conference on Computers (2008)

Microscopic image analysis is used to research the classification and recognition of wastewater bacteria. A improved neural network is put forward for wastewater bacteria classification based on micriscopic image of wastewater bacteria. An adaptive and enhanced edge detection solution for the images of wastewater bacteria is described, which can effectively remove or restrain noises in the images and get clear edges of microscopic image with the varied order of edge detection and segmentation threshold optimization. PCA is used to reduce the eleven features extracted from the images to six primary features. an daptivate accelerated BP algorithm is used to learn to classify the images. The result of tests showed that the image recognition solution described in the paper is effective.
Efficient heuristics for wireless network tower placement
Authors: Jason K. Deane, Terry R. Rakes, Loren Paul Rees
Venue: Information Technology and Management (2009)

Over the last decade, telecommunications companies have invested nearly 100 billion dollars in the development of an impressive fiber optic backbone which is capable of transmitting data at incredible speeds. However, much of this backbone remains unused because of the data capacity bottleneck which exists at the user level. While various technologies have emerged to provide greater end-point capacity, many of these are of limited availability due to cost or technical considerations. One promising technology has been high-speed wireless service. Wireless service has the potential to provide widespread coverage, but the cost of developing the infrastructure such as antenna towers can be formidable. While models have been developed to assist in the planning for minimum cost tower placement, these models can be quite large and complex to solve. This paper explores alternate solution methods based on heuristic approaches which may allow for the solution of much larger tower placement problems.
A multi-plane approach for text segmentation of complex document images
Authors: Yen-Lin Chen, Bing-Fei Wu
Venue: Pattern Recognition (2009)

This study presents a new method, namely the multi-plane segmentation approach, for segmenting and extracting textual objects from various real-life complex document images. The proposed multi-plane segmentation approach first decomposes the document image into distinct object planes to extract and separate homogeneous objects including textual regions of interest, non-text objects such as graphics and pictures, and background textures. This process consists of two stages-localized histogram multilevel thresholding and multi-plane region matching and assembling. Then a text extraction procedure is applied on the resultant planes to detect and extract textual objects with different characteristics in the respective planes. The proposed approach processes document images regionally and adaptively according to their respective local features. Hence detailed characteristics of the extracted textual objects, particularly small characters with thin strokes, as well as gradational illuminations of characters, can be well-preserved. Moreover, this way also allows background objects with uneven, gradational, and sharp variations in contrast, illumination, and texture to be handled easily and well. Experimental results on real-life complex document images demonstrate that the proposed approach is effective in extracting textual objects with various illuminations, sizes, and font styles from various types of complex document images.
A Game for Taking Requirements Engineering More Seriously
Authors: Eric Knauss, Kurt Schneider, Kai Stapel
Venue: Proceedings of the 2008 Third International Workshop on Multimedia and Enjoyable Requirements Engineering - Beyond Mere Descriptions and with More Fun and Games (2008)

Requirements engineering (RE) is often neglected and not taken seriously. In particular, students and small or medium enterprises do not see how RE activities are related to the success or failure of projects. We address this serious problem with a game stu- dents can play in a few minutes. Our software quantum metaphor helps to visualize a main challenge of RE: building the right system within available time. We animate the metaphor and present it as simulated software project. Agile ideas and comprehensive documentation can be tried out, as well as the impact of prototypes and reviews on requirements. A player needs to balance speed and quality, and should weed out early misunderstandings later. This helps to experience advantages of systematic RE. The game facilitates comprehension and encourages taking RE a little more seriously.
Linear high-resolution schemes for hyperbolic conservation laws: TVB numerical evidence
Authors: C. Bona, C. Bona-Casas, J. Terradas
Venue: Journal of Computational Physics (2009)

The Osher-Chakrabarthy family of linear flux-modification schemes is considered. Improved lower bounds on the compression factors are provided, which suggest the viability of using the unlimited version. The LLF flux formula is combined with these schemes in order to obtain efficient finite-difference algorithms. The resulting schemes are applied to a battery of numerical tests, going from advection and Burgers equations to Euler and MHD equations, including the double Mach reflection and the Orszag-Tang 2D vortex problem. Total-variation-bounded (TVB) behavior is evident in all cases, even with time-independent upper bounds. The proposed schemes, however, do not deal properly with compound shocks, arising from non-convex fluxes, as shown by Buckley-Leverett test simulations.
User interactions in social networks and their implications
Authors: Christo Wilson, Bryce Boe, Alessandra Sala, Krishna P.N. Puttaswamy, Ben Y. Zhao
Venue: Proceedings of the 4th ACM European conference on Computer systems (2009)

Social networks are popular platforms for interaction, communication and collaboration between friends. Researchers have recently proposed an emerging class of applications that leverage relationships from social networks to improve security and performance in applications such as email, web browsing and overlay routing. While these applications often cite social network connectivity statistics to support their designs, researchers in psychology and sociology have repeatedly cast doubt on the practice of inferring meaningful relationships from social network connections alone. This leads to the question: Are social links valid indicators of real user interaction? If not, then how can we quantify these factors to form a more accurate model for evaluating socially-enhanced applications? In this paper, we address this question through a detailed study of user interactions in the Facebook social network. We propose the use of interaction graphs to impart meaning to online social links by quantifying user interactions. We analyze interaction graphs derived from Facebook user traces and show that they exhibit significantly lower levels of the "small-world" properties shown in their social graph counterparts. This means that these graphs have fewer "supernodes" with extremely high degree, and overall network diameter increases significantly as a result. To quantify the impact of our observations, we use both types of graphs to validate two well-known social-based applications (RE and SybilGuard). The results reveal new insights into both systems, and confirm our hypothesis that studies of social applications should use real indicators of user interactions in lieu of social graphs.
EEHC: Energy efficient heterogeneous clustered scheme for wireless sensor networks
Authors: Dilip Kumar, Trilok C. Aseri, R. B. Patel
Venue: Computer Communications (2009)

In recent years, there has been a growing interest in wireless sensor networks. One of the major issues in wireless sensor network is developing an energy-efficient clustering protocol. Hierarchical clustering algorithms are very important in increasing the network's life time. Each clustering algorithm is composed of two phases, the setup phase and steady state phase. The hot point in these algorithms is the cluster head selection. In this paper, we study the impact of heterogeneity of nodes in terms of their energy in wireless sensor networks that are hierarchically clustered. We assume that a percentage of the population of sensor nodes is equipped with the additional energy resources. We also assume that the sensor nodes are randomly distributed and are not mobile, the coordinates of the sink and the dimensions of the sensor field are known. Homogeneous clustering protocols assume that all the sensor nodes are equipped with the same amount of energy and as a result, they cannot take the advantage of the presence of node heterogeneity. Adapting this approach, we introduce an energy efficient heterogeneous clustered scheme for wireless sensor networks based on weighted election probabilities of each node to become a cluster head according to the residual energy in each node. Finally, the simulation results demonstrate that our proposed heterogeneous clustering approach is more effective in prolonging the network lifetime compared with LEACH.
Blind Mesh Watermarking Based on the Featured Points in the Frequency Domain
Authors: Guangfu Ren, Caiming Zhang, Xingqiang Yang
Venue: Proceedings of the 2009 Second International Workshop on Knowledge Discovery and Data Mining (2009)

A novel blind robust 3D mesh object watermarking method is proposed. Firstly, we choose the prongs of the mesh; secondly, to suppose that the prongs are the centers of the circle and the length we choose is the radius, we can get the areas which could be watermarked; and then, with the sphere coordinate, we will get the distance from the object center to the vertices, and perform DFT on the sphere radiuses; the watermark will be embedded by changing the DFT frequency coefficients. Experimental results show that this watermarking scheme is robust against the attacks such as rotation, translation, uniform scaling and even cropping and the embedded watermark is invisible.
Biological effect of microwave on the nervous system
Authors: Ozlem Coskun, Selcuk Comlekci, Suat Ozkorucuklu
Venue: Proceedings of the 8th conference on Applied informatics and communications (2008)

This article presents an overview of the recent RF bioeffects literature dealing with the nervous system. Studies have evaluated the electroencephalography (EEG) of humans and laboratory animals during and after radiofrequency (RF) exposures. Exposure to high levels of RF energy can damage the structure and function of the nervous system. Much research has focused on the neurochemistry of the brain and the reported effects of RF exposure. Studies of individuals who are reported to be sensitive to electric and magnetic fields are discussed. The many exposure parameters such as frequency, orientation, modulation, power density, and duration of exposure make direct comparison of many experiments difficult. At high exposure power densities, thermal effects are prevalent and can lead to adverse consequences. At lower levels of exposure biological effects may still occur but thermal mechanisms are not ruled out. It is concluded that the diverse methods and experimental designs as well as lack of replication of many seemingly important studies prevents formation of definite conclusions concerning hazardous nervous system health effects from RF exposure. The only firm conclusion that may be drawn is the potential for hazardous thermal consequences of high power RF exposure.
Trends in database management: 1975
Authors: Charles W. Bachman
Venue: Proceedings of the May 19-22, 1975, national computer conference and exposition (1975)

The subject of database management systems is receiving attention at an accelerating rate. The work of the COBOL Data Base Task Group (DBTG) has achieved major acceptance. This acceptance can be measured in terms of the number of computer systems for which DBTG software is now available, and the number of customers who have successfully installed application systems based upon this software. While the specifications are yet imperfect and development committees will be refining them for years, it appears to this author that a major step in the evolution of computerized information systems has been accomplished. Integrated database systems are here to stay.
The Brazilian National Telehealth Program in the State of Minas Gerais - Brazil
Authors: Maria do Carmo B. de Melo, Alaneir de F. dos Santos, Humberto J. Alves, Simone F. dos Santos, Renata T. Campos, Gustavo Cancela e. Penna, Claudio de Souza
Venue: Proceedings of the 2009 International Conference on eHealth, Telemedicine, and Social Medicine (2009)

The Brazilian National Telehealth Program was setup by the Brazilian Ministry of Health. In Minas Gerais state, the Federal University of Minas Gerais School of Medicine has joined the State Department of Health and 50 towns for this project development. This paper describes the implementation of the service and partial results and services available. The Nucleus of Telehealth of Minas Gerais has been developing teleducation and teleassistence. From 2007 to 2008 278 teleconsultations and 6295 ECG’s took place. A total of 1339 health professionals participated in the videoconferences. The professionals involved in this project were interviewed and talked about the difficulties and benefits. The Telehealth has improved patient’s assistance and decreased the patient’s needs for dislocation and for consultations with a specialist in big centers. Moreover it was noticed that there is a high cultural resistance concerning the use of information and communication technologies.
Designing location-based mobile games with a purpose: collecting geospatial data with CityExplorer
Authors: Sebastian Matyas, Christian Matyas, Christoph Schlieder, Peter Kiefer, Hiroko Mitarai, Maiko Kamata
Venue: Proceedings of the 2008 International Conference on Advances in Computer Entertainment Technology (2008)

The games with a purpose paradigm proposed by Luis von Ahn [9] is a new approach for game design where useful but boring tasks, like labeling a random image found in the web, are packed within a game to make them entertaining. But there are not only large numbers of internet users that can be used as voluntary data producers but legions of mobile device owners, too. In this paper we describe the design of a location-based mobile game with a purpose: CityExplorer. The purpose of this game is to produce geospatial data that is useful for non-gaming applications like a location-based service. From the analysis of four use case studies of CityExplorer we report that such a purposeful game is entertaining and can produce rich geospatial data collections.
A GPU-based method for approximate real-time fluid flow simulation
Authors: Tomasz Rozen, Krzysztof Boryczko, Witold Alda
Venue: Machine Graphics Vision International Journal (2008)

Fluid flow can be realistically simulated by physical models. We present a method for simplifying the Navier-Stokes equations by relaxing the incompressibility constraint. Our method allows for low-cost real-time simulation of two-dimensional fluid flow with accuracy sufficient for computer graphics. The implementation takes advantage of recent programmable floating-point graphics hardware, which performs all the necessary computations.
Sad is heavy and happy is light: population stereotypes of tangible object attributes
Authors: Jörn Hurtienne, Christian Stößel, Katharina Weber
Venue: Proceedings of the 3rd International Conference on Tangible and Embedded Interaction (2009)

Population stereotypes describe ways in which people, often unconsciously, expect user interface elements to function. Thus they can provide powerful rules for designing intuitive interaction. The literature, however, documents only a few population stereotypes and most of them do not tap the full potential of tangible interaction. Here, we try to alleviate this situation by providing a theory and a method to obtain candidate population stereotypes with a special emphasis on physical-to-abstract mappings. Twenty-nine stereotype candidates were derived from the theory and their validity was empirically tested. The results indicate that more than half of them can be recommended as design guidelines right away; the remainder needs further investigation regarding the contexts under which they can be applied.
Website Design Guide to Joomla! 1.5, Virtuemart & Extensions
Authors: PhD (abd),  Michelle M. Griffin
Venue:  (2008)

Have you always wanted to build a website, but did not know the first thing about HTML or programming? Do you have a website, which you are held hostage by your website design company to do updates? Do you want to get into Open Source, PHP, Web 2.0 and 3.0? This guide is designed for anyone in the world who owns a business or who wants to build a website but doesnt know how to start. Open Source is your key to the future. Open Source software automates a majority of the tasks of developing a website down to the point, where you just add content and the code is handled for you. Everything is point and click, it couldn't be easier. Joomla! 1.5 and Virtuemart are Open source software packages available free on the internet for building professional websites. Website Design Guide walks you through how to build a Website with forum capabilities or a Website with Ecommerce capabilities to sell products to your customers. You can have a beautiful looking professional site in a few hours. Be ahead of the curve and learn about Open Source through Joomla! and Virtuemart. This book covers: Installation,Setup,Configuration,Content creation,Search Engine OptimizationOrganization of your content Ecommerce setup Building a Forum Working with extensions Walk through a live website development from start to finish.This book is for everyone in the worlds, who wants to build and control their website without spending thousands of dollars to do.