ppxscal/embedding_network huggingface dataset:
Simulation procedure for vehicle-substructure dynamic interactions and wheel movements using linearized wheel-rail interfaces
Authors: Dinh-Van Nguyen, Ki-Du Kim, Pennung Warnitchai
Venue: Finite Elements in Analysis and Design (2009)

A simulation procedure for vehicle-substructure dynamic interactions and wheel movements is presented. The vehicles and substructure systems interact though wheel-rail interfaces satisfying two compatibilities, i.e., the equilibrium of contact forces including a lateral creep damping force and the geometry relating wheel and rail movements, rail irregularities and local contact deformations. Each vehicle is modeled as a multi-axle two layer of mass-spring-damper system having 27 degrees of freedom. The bridge modeling is made adaptive to various finite elements; the element forces and responses at wheel positions are related to the nodal ones by consistent shape functions. The proposed solution algorithm consists of separate integrations for the vehicles and substructures and an iterative scheme for wheel-rail contact forces and geometry. The vehicle and substructure coefficient matrices are time-independent, symmetric, and performed in one-dimensional bases. The updating and re-decomposing time is excluded; thus the procedure is versatile and applicable for various types of vehicle configuration, large number of vehicles, and complex substructures. The simulation is validated by an analytical sprung-mass bridge model and good agreement is obtained. A real train of fifteen vehicles over a rough slab-track railway having a simply supported bridge is investigated. The vehicle accelerations and wheel relative displacements increase largely when they are crossing the bridge.
Command Dialogues
Authors: Katie Atkinson, Rod Girle, Peter Mcburney, Simon Parsons
Venue: Argumentation in Multi-Agent Systems: Fifth International Workshop, ArgMAS 2008, Estoril, Portugal, May 12, 2008. Revised Selected and Invited Papers (2009)

We propose a representation of imperatives in computational systems, and a multi-agent dialogue protocol to argue over these. Our representation treats a command as a presumptive argument for an action to be executed by a designated agent, together with a set of associated critical questions whose answers may defeat the presumption. The critical questions enable the identification of attacks on the uttered command, and so can be used to specify a dialogue game protocol for participants to argue over the command. We present a formal syntax for part of the protocol, called CDP, and outline denotational semantics for both commands and for the protocol.
Providing Portlet-Based Client Access to CIMA-Enabled Crystallographic Instruments, Sensors, and Data
Authors: Hao Yin, Donald McMullen, Mehmet Nacar, Marlon Pierce, Kianosh Huffman, Geoffrey Fox, Yu Ma
Venue: Proceedings of the 7th IEEE/ACM International Conference on Grid Computing (2006)

The Common Instrument Middleware Architecture (CIMA) project, supported by the NSF Middleware Initiative, aims at making scientific instruments and sensors remotely accessible by providing a general solution for services and user interfaces to remotely access data from instruments and to remotely monitor experiments. X-ray crystallography is one of several motivating applications for the development of CIMA. Data such as CCD frames and sensor readings may be accessed by portals through middleware services as they are being acquired or through persistent archives. CIMA software may be used to federate online instruments in multiple labs, so this project must also address problems in data management and data sharing. This paper describes a collaboration between the CIMA and the Open Grid Computing Environments (OGCE) project to enable remote users to monitor instruments and interact with data gathered from CIMA-enabled crystallography laboratories through various Web portal components (portlets) running within a standards-compliant portal container. We also discuss an approach taken to develop portlets that use Web Services for data management and solutions for managing distributed identity and access control.
Guaranteed stable projection-based model reduction for indefinite and unstable linear systems
Authors: Bradley N. Bond, Luca Daniel
Venue: Proceedings of the 2008 IEEE/ACM International Conference on Computer-Aided Design (2008)

In this work we present a stability-preserving projection framework for model reduction of linear systems. Specifically, given one projection matrix (e.g. a right-projection matrix), we derive a set of linear constraints for the other projection matrix (e.g. the left-projection matrix) resulting in a projection framework that is guaranteed to generate a stable reduced model. Several efficient techniques for solving the proposed system of constraints are presented, including an optimization problem formulation for finding the optimal stabilizing projection, and a formulation with computational complexity independent of the size of the original system. The resulting algorithms can create accurate stable and passive models of arbitrary indefinite systems at a significantly cheaper cost than existing methods such as balanced truncation. Nevertheless, our algorithms integrate fully and effortlessly with most of the available standard model order reduction approaches for very large systems generated in VLSI applications (such as moment-matching methods, POD, or Poor Man's TBR), which can guarantee stability and passivity only in very specialized cases. Our algorithms have been tested on a large variety of typical VLSI applications, including field-solver-extracted models of RF inductors for analog applications, power distribution grids for large VLSI digital integrated circuits, and MEMS devices for sensing and actuation applications. The results have been successfully compared to those from existing and much more expensive stabilizing reduction techniques.
Technology development, severed ventures, and other aspects of corporate venture capital
Authors: Jean E. De Valpine
Venue: Proceedings of the May 19-22, 1980, national computer conference (1980)

The following discussion is based on the experience of Memorial Drive Trust (MDT) in connection with efforts of business corporations to participate through investment or contribution of technology, resources, or personnel, in the development of other business enterprises. We shall emphasize so-called "severed ventures," but will include an example of another approach. We shall also describe a capability in the areas of technology and product development up to and including participation in startup or early-stage technology ventures. 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
Enterprise logon server for domain wide web-based applications
Authors: Sylvia Encheva, Sharil Tumin
Venue: Proceedings of the 7th conference on Circuits, systems, electronics, control and signal processing (2008)

A growing body of Web-based applications within an educational organization demands a simple and robust Web logon service. Most universities own a collection of Web-based applications for administration, learning and collaborative systems, front-end to databases and directories, plus hosts of other utility applications. Web-based applications provide users with services no matter at what time of the day and where from the users are located. There are no time and space constrains on on-line services. In the age of Internet we are used to this symbiosis between us and the organization we belong to. The system presented here implements the basic logon and SSO functionalities and is written in Python.
A new hybrid approach based on SARIMA and partial high order bivariate fuzzy time series forecasting model
Authors: Erol Egrioglu, Cagdas Hakan Aladag, Ufuk Yolcu, Murat A. Basaran, Vedide R. Uslu
Venue: Expert Systems with Applications: An International Journal (2009)

In the literature, there have been many studies using fuzzy time series for the purpose of forecasting. The most studied model is the first order fuzzy time series model. In this model, an observation of fuzzy time series is obtained by using the previous observation. In other words, only the first lagged variable is used when constructing the first order fuzzy time series model. Therefore, this model can not be sufficient for some time series such as seasonal time series which is an important class in time series models. Besides, the time series encountered in real life have not only autoregressive (AR) structure but also moving average (MA) structure. The fuzzy time series models available in the literature are AR structured and are not appropriate for MA structured time series. In this paper, a hybrid approach is proposed in order to analyze seasonal fuzzy time series. The proposed hybrid approach is based on partial high order bivariate fuzzy time series forecasting model which is first introduced in this paper. The order of this model is determined by utilizing Box-Jenkins method. In order to show the efficiency of the proposed hybrid method, real time series are analyzed with this method. The results obtained from the proposed method are compared with the other methods. As a result, it is observed that more accurate results are obtained from the proposed hybrid method.
Web Interactivity in the Perspective of Young Users
Authors: Caroline Queiroz Santos, Ana Maria Pereira Cardoso
Venue: Proceedings of the 2008 Latin American Web Conference (2008)

This paper presents the results of a qualitative research whose objective was to broaden the understanding on the participation of youngsters and adolescents on Internet-based social networks. Data collection was conducted from participants of the Cidadão.NET (Citizen.NET), which is a digital inclusion project that covers the north and northeast regions of the state of Minas Gerais, Brazil. The results indicate the start of new forms of socialization and differentiated cohabitation, in which simultaneous long-distance communication plays, in the construction of social relations, the same role as face-to-face interaction and dialogue, reinforcing pre-existing strong ties and opening possibilities for the establishment of weak ties, which may or may not become stronger. It was possible to identify a preferential use for entertainment activities and, secondarily, for the accomplishment of school-related tasks.
A quality-aware optimizer for information extraction
Authors: Alpa Jain, Panagiotis G. Ipeirotis
Venue: ACM Transactions on Database Systems (TODS) (2009)

A large amount of structured information is buried in unstructured text. Information extraction systems can extract structured relations from the documents and enable sophisticated, SQL-like queries over unstructured text. Information extraction systems are not perfect and their output has imperfect precision and recall (i.e., contains spurious tuples and misses good tuples). Typically, an extraction system has a set of parameters that can be used as &ldquo;knobs&rdquo; to tune the system to be either precision- or recall-oriented. Furthermore, the choice of documents processed by the extraction system also affects the quality of the extracted relation. So far, estimating the output quality of an information extraction task has been an ad hoc procedure, based mainly on heuristics. In this article, we show how to use Receiver Operating Characteristic (ROC) curves to estimate the extraction quality in a statistically robust way and show how to use ROC analysis to select the extraction parameters in a principled manner. Furthermore, we present analytic models that reveal how different document retrieval strategies affect the quality of the extracted relation. Finally, we present our maximum likelihood approach for estimating, on the fly, the parameters required by our analytic models to predict the runtime and the output quality of each execution plan. Our experimental evaluation demonstrates that our optimization approach predicts accurately the output quality and selects the fastest execution plan that satisfies the output quality restrictions.
On the Road to $\mathcal{PLS}$-Completeness: 8 Agents in a Singleton Congestion Game
Authors: Dominic Dumrauf, Burkhard Monien
Venue: Proceedings of the 4th International Workshop on Internet and Network Economics (2008)

In this paper, we investigate the complexity of computing locally optimal solutions for Singleton Congestion Games (SCG) in the framework of $\mathcal{PLS}$, as defined in Johnson et al. [25]. Here, in an instance weighted agents choose links from a set of identical links. The cost of an agent is the load (the sum of the weights of the agents) on the link it chooses. The agents are selfish and try to minimize their individual cost. Agents may form arbitrary, non-fixed coalitions. The cost of a coalition is defined to be the maximum cost of its members. The potential function is defined as the lexicographical order of the agents&rsquo; cost. In each selfish step of a coalition, the potential function decreases. Thus, a local minimum is a Nash Equilibrium among coalitions of size at most k&mdash;an assignment where no coalition of size at most k has an incentive to unilaterally decrease its cost by switching to different links. The neighborhood of a feasible assignment (every agent chooses a link) are all assignments, where the cost of some arbitrary non-fixed coalition of at most k reallocating agents decreases. We call this problem SCG-(k) and show that SCG-(k) is $\mathcal{PLS}$-complete for k&thinsp;&ge; 8. On the other hand, for k&thinsp;=&thinsp;1, it is well known that the solution computed by Graham&rsquo;s LPT-algorithm [14,16,22] is locally optimal for SCG-(k). We show our result by tight reduction from the MaxConstraintAssignment-problem (p,q,r)-MCA, which is an extension of Generalized Satisfiability to higher valued variables. Here, p is the maximum number of variables occurring in a constraint, q is the maximum number of appearances of a variable, and r is the valuedness of the variables. To the best of our knowledge, SCG-(k) is the first problem, which is known to be solvable in polynomial time for a small neighborhood and $\mathcal{PLS}$-complete for a larger, but still constant neighborhood.
A Scalable System for 3D Audio Ray Tracing
Authors: Wolfgang Mueller, Frank Ullmann
Venue: Proceedings of the 1999 IEEE International Conference on Multimedia Computing and Systems - Volume 02 (1999)

Though several approaches in sound processing are denoted as 3D audio very few of them generate high quality 3D audio information which allows listeners to exactly locate sound sources in three dimensional space. We present an approach to enhance sound by high quality 3D audio information through acoustic ray tracing where 3D audio is offline processed with digital filters of a head-related transfer function. The basic approach computes a fixed sound source for fixed listener. This approach is extended to generate 3D audio for moving listeners in interactive environments.
Collaborative translation by monolinguals with machine translators
Authors: Daisuke Morita, Toru Ishida
Venue: Proceedings of the 13th international conference on Intelligent user interfaces (2009)

In this paper, we present the concept for collaborative translation, where two non-bilingual people who use different languages collaborate to perform the task of translation using machine translation (MT) services, whose quality is imperfect in many cases. The key idea of this model is that one person, who handles the source language (source lan-guage side) and another person, who handles the target language (target language side), play different roles: the target language side modifies the translated sentence to improve its fluency, and the source language side evaluates its adequacy. We demonstrated the effectiveness and the practicality of this model in a tangible way.
Developing with Google App Engine, 1 edition
Authors: Eugene Ciurana
Venue:  (2009)

Developing with Google App Engine introduces development with Google App Engine, a platform that provides developers and users with infrastructure Google itself uses to develop and deploy massively scalable applications. Introduction to concepts Development with App Engine Deployment into App Engine What youll learn Create processes that are ideal for cloud platforms. Design data for the cloud. Learn what types of applications are ideal for the cloud. Deploy web applications into the cloud. Measure the success and health of the cloud. Who is this book for? Python developers, developers interested in massive scaling, and developers interested in Google or cloud computing
On the preparation of computer science professionals in academic institutions
Authors: J. A. Archibald,  Jr., M. Katzper
Venue: Proceedings of the May 6-10, 1974, national computer conference and exposition (1974)

One of the major problems facing the computing industry concerns the training of professionals. Many of the existing programs in computer science at academic institutions simply do not provide the preparation required for the practice of computer science in industry. This problem is due primarily, but not exclusively, to the failure of our academic institutions to consider the needs of industry in ordering their priorities and goals. Other causes are the specific failure of industry to make its needs known in an adequate manner to the academic institutions, and the general lack of communication between these communities. Regretfully, neither community is taking adequate steps to solve the problem. In this void of activity, we find the several professional societies trying to bridge the gap with programs for the certification of professionals.
The Colour of Embedded Computation
Authors: Ian Phillips
Venue: Proceedings of the 5th International Workshop on Reconfigurable Computing: Architectures, Tools and Applications (2009)

Categories and classifications, like acronyms, are useful shortcuts to facilitate discussion and decision. Yet their use is frequently subsumed by business interests to become objects or objectives in their own right. So used, they subtly mislead and constrain the thought process: Not only of the many who can afford to be be enticed by the bejewelled shell; but of greater import, of the scientists whose role is to create the viable technology within. In this presentation the author will explore some of the common shortcuts prevalent in the area of microelectronic systems, to identify limitations caused by their commercial adoption, and in consequence the research avenues and business opportunities in danger of being overlooked. 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
Object oriented modelling of variable envelope properties in buildings
Authors: Borut Zupančič, Anton Sodja
Venue: WSEAS Transactions on Systems and Control (2008)

The paper deals with some important aspects of continuous systems modelling approaches. Namely the traditional approach is based on block oriented schemes in which causal relations play an important role. However this causality is artificially generated in order to fulfil appropriate conditions for simulation on conventional sequential computers. Fortunately new concepts which are based on object oriented approaches, physically oriented connections and algebraic manipulations enable the so called acausal modelling. Both approaches are used in the modelling of thermal flows in intelligent building. Advantages and disadvantages of two concepts and environments are discussed. As validation is always the most important phase of each modelling project a small physical "chamber" was built. The second part of the paper demonstrates the efficiency of the developed simulation model. With the simulation we studied how to compensate or efficiently use variable outdoor conditions, e.g. solar radiation and outdoor temperature in order to assure the appropriate indoor conditions. This was not performed with conventional approaches, e.g. with heating, cooling, ventilating, humidifying, etc. but with on line dynamical adaptations in the building envelope. Variable wall insulation, movable window insulation, movable shading system and rotating object were proposed and studied.
Combined Effect of Random Transmit Power Control and Inter-Path Interference Cancellation on DS-CDMA Packet Mobile Communications
Authors: Eisuke Kudoh, Haruki Ito, ZhiSen Wang, Fumiyuki Adachi
Venue: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (2008)

In mobile communication systems, high speed packet data services are demanded. In the high speed data transmission, throughput degrades severely due to severe inter-path interference (IPI). Recently, we proposed a random transmit power control (TPC) to increase the uplink throughput of DS-CDMA packet mobile communications. In this paper, we apply IPI cancellation in addition to the random TPC. We derive the numerical expression of the received signal-to-interference plus noise power ratio (SINR) and introduce IPI cancellation factor. We also derive the numerical expression of system throughput when IPI is cancelled ideally to compare with the Monte Carlo numerically evaluated system throughput. Then we evaluate, by Monte-Carlo numerical computation method, the combined effect of random TPC and IPI cancellation on the uplink throughput of DS-CDMA packet mobile communications.
Enhanced Side Information Generator with Accurate Evaluations in Block-Based Wyner-Ziv Video Coding
Authors: Chang-Ming Lee, Jui-Chiu Chiang, Zhi-Heng Chiang, Kuan-Liang Chen, Wen-Nung Lie
Venue: Proceedings of the 3rd Pacific Rim Symposium on Advances in Image and Video Technology (2009)

Wyner-Ziv coding (WZC) has received a lot of attention lately. Based on the block unit for WZ-/intra-coding and the temporal distance between two consecutive key blocks, two techniques are proposed to improve the performance of block-based distributed video coding. Depending on the spatio-temporal analysis, the first method adjusts the mode assignment to a more precise generation of side information. In addition, the second method carries out the correlation calculation in the encoder side to ensure a better statistical estimation between the side information frame and the original frame. Thus, the more accurate side information combined with the more reliable statistical parameters results in an improved coding efficiency. The simulation results show that the compound of these two proposed methods has an improvement up to 2.7 dB with respect to the previous work in block-based WZC.