ppxscal/embedding_network huggingface dataset:
A fermi-statistics-based model for quantum semiconductor device simulations
Authors: Ren-Chuen Chen
Venue: Proceedings of the 12th WSEAS international conference on Computers (2008)

In this paper, we derive a Fermi-statistics-based self-consistent stationary model for quantum semiconductor device simulations. This new model is comprehensive in both physical and mathematical aspects. It is capable of describing hot electron transport as well as significant quantum mechanical effects for advanced devices with dimensions comparable to the de Broglie wave-length. Moreover, quantum mechanical Fermi-Dirac statistics is also introduced to estimate the electron concentration. The model is completely self-adjoint for all state variables and hence provides many appealing mathematical features such as global convergence, fast iterative solution, and highly parallelizable. Numerical simulations on diode with the length down to 30 nm using this model have been performed and compared with that using the Boltzmann-statistics-based transport model. It is shown that the maximal electron temperature is significantly reduced by the new model up to 76% comparing with that of the previous model in literature.
SLAPbook: tangible widgets on multi-touch tables in groupware environments
Authors: Malte Weiss, Julie Wagner, Roger Jennings, Yvonne Jansen, Ramsin Khoshabeh, James D. Hollan, Jan Borchers
Venue: Proceedings of the 3rd International Conference on Tangible and Embedded Interaction (2009)

We present SLAPbook, an application using SLAP, translucent and tangible widgets for use on vision-based multi-touch tabletops in Single Display Groupware (SDG) environments. SLAP stands for Silicone ILluminated Active Peripherals and includes widgets such as sliders, knobs, keyboards, and buttons. The widgets and tactile feedback to multi-touch tables while simultaneously providing dynamic relabeling to tangible objects using the table's rear projection. SLAPbook provides multiple users the ability to add and edit content to a guestbook, browse other peoples' entries, and access personal data using a token-based personalization system. Interaction with the table takes place in the personal and public space so that users can make use of personal and shared controls to perform separate and coordinative actions.
Generalized Elastic Scheduling for Real-Time Tasks
Authors: Thidapat (Tam) Chantem, Xiaobo Sharon Hu, Michael D. Lemmon
Venue: IEEE Transactions on Computers (2009)

The elastic task model is a powerful model for adapting periodic real-time systems in the presence of uncertainty. This work generalizes the existing elastic scheduling approach in several directions. First, it presents a general framework, which formulates a trade-off between task schedulability and a specific performance metric as an optimization problem. Such a framework allows real-time systems under overloads to graciously adapt by adjusting their performance level. Second, it is shown in this work that the well-known task compression algorithm in fact solves a quadratic programming problem that seeks to minimize the sum of the squared deviation of a task's utilization from initial desired utilization. This finding indicates that the task compression algorithm may be applied to efficiently solve other similar types of problems that often arise in real-time applications. In particular, an iterative approach is proposed to solve the period selection problem for real-time tasks with deadlines less than respective periods. Further, the framework is adapted to solve the deadline selection problem, which is useful in some control systems with fixed periods.
Evaluating visual search performance with a multi layer display
Authors: Andreas Dünser, Mark Billinghurst, Gabriela Mancero
Venue: Proceedings of the 20th Australasian Conference on Computer-Human Interaction: Designing for Habitus and Habitat (2008)

A Multi Layer Display (MLD) is a novel device which allows content to be shown on different depth planes. Earlier research indicates that stereoscopic depth information can be beneficial in visual search tasks. This has not yet been explored for this new display technology. In this paper we present the results of an experiment to explore how the actual depth information afforded by a two layer MLD affects visual search task performance. We found that placing distracters and targets on different depth layers can significantly improve performance in complex search tasks. We discuss these findings and provide suggestions on how to arrange the stimuli across the two layers in order to get the full benefit of the depth information.
Improved lower bounds for semi-online bin packing problems
Authors: J&#x00e1;nos Balogh, J&#x00f3;zsef B&#x00e9;k&#x00e9;si, G&#x00e1;bor Galambos, Mih&#x00e1;ly Csaba Mark&#x00f3;t
Venue: Computing (2009)

In the paper we deal with lower bounds constructed for the asymptotic competitive ratio of semi-online bin packing and batched bin packing algorithms.We determine the bounds as the solutions of a related nonlinear optimization problem using theoretical analysis and a reliable numerical global optimization method. Our results improve the lower bounds given in Gutin et&#x00a0;al. (Discrete Optim 2:71&#x2013;82, 2005) for some special cases of the batched bin packing problem.
Contents oriented space
Authors: Hidenori Watanave
Venue: Proceedings of the 2008 International Conference on Advances in Computer Entertainment Technology (2008)

Some of 3D databases of the world-wide Internet material have been constructed on the 3D Internet, as application of the method of spacio-designing 'Contents Oriented Space'.
Dynamic Quota Allocation in EPFTS-based SUPANET
Authors: Haiying Wang, Yu Gao
Venue: Proceedings of the 2009 International Conference on Electronic Computer Technology (2009)

This paper proposes a novel dynamic bandwidth allocation method based on a new switch technology named Ethernet-oriented physical frame timeslot switching (EPFTS). Based on the features of EPFTS, the bandwidth allocation is changed to quota allocation for manageable quality of service (QoS). The proposed method is composed of a quota allocation strategy and a dynamic quota scheduling policy called timeslots saving dynamic quota adjustment (TSDQA) algorithm. In order to guarantee the QoS request of the end users with different preferred quality, this algorithm effective allocate the network resources and dynamic adjust the quota combine the utility factor of timeslots resource and the fairness between traffic classes. Simulation results are analyzed in terms of the timeslots utilization, allocation quota, and time delay. The results show that the proposed method and dynamic adjustment algorithm can provide users with a better QoS-oriented resource reservation.
A Query Model for Retrieving Relevant Intervals within a Video Stream
Authors: Sujeet Pradhan, Keishi Tajima, Katsumi Tanaka
Venue: Proceedings of the 1999 IEEE International Conference on Multimedia Computing and Systems - Volume 02 (1999)

An hour long video data may contain a large number of meaningful intervals. Manual identification of all such intervals is practically infeasible. There has been some success in automatically parsing and indexing video data through the integration of technologies such as image processing, speech/character recognition, and natural language understanding. However, even by applying such techniques, complete identification of all the intervals required for answering all possible queries cannot be achieved. As a result, using the current state-of-art techniques, whether automatic or manual, it is only fragmentary video intervals that can be successfully indexed. Our goal is to retrieve meaningful intervals within such fragmentarily indexed video streams. We propose a new set of algebraic operations which enable us to compose all the intervals that are conceivably relevant to a query. Since these operations may compose even irrelevant intervals, we provide a mechanism to exclude as many of them as possible from the answer set.
Thread-Modular Shape Analysis
Authors: Mooly Sagiv
Venue: Proceedings of the 10th International Conference on Verification, Model Checking, and Abstract Interpretation (2008)

Thread-modular static analysis of concurrent systems abstracts away the correlations between the local variables (and program locations) of different threads. This idea reduces the exponential complexity due to thread interleaving and allows us to handle programs with an unbounded number of threads.Thread-modular static analyses face a major problem in simultaneously requiring a separation of the reasoning done for each thread, for efficiency purposes, and capturing relevant interactions between threads, which is often crucial to verify properties. Programs that manipulate the heap complicate thread-modular analysis. Naively treating the heap as part of the global state, accessible by all threads, has several disadvantages since it still admits exponential blow-ups in the heap and is not precise enough to capture things like ownership transfers of heap objects. An effective thread-modular analysis needs to determine which parts of the heap are owned by which threads to obtain a suitable thread-modular state abstraction.I will present new thread-modular analysis techniques and adaptations of thread-modular analysis for programs which manipulate the heap. It is shown that the precision of thread-modular analysis is improved by tracking some correlations between the local variables of different threads. I will also describe techniques for reducing the analysis time for common situations. A key observation for handling the heap is using notions of separation and more generally subheaps in order to abstract away correlations between the properties of subheaps.This is a joint work with Josh Berdine, Byron Cook, Alexey Gotsman, Tal Lev-Ami, Roman Manevich, G. Ramalingam, and Michal Segalov.
Leverage, heavy-tails and correlated jumps in stochastic volatility models
Authors: Jouchi Nakajima, Yasuhiro Omori
Venue: Computational Statistics Data Analysis (2009)

Efficient and fast Markov chain Monte Carlo estimation methods for the stochastic volatility model with leverage effects, heavy-tailed errors and jump components, and for the stochastic volatility model with correlated jumps are proposed. The methods are illustrated using simulated data and are applied to analyze daily stock returns data on S&P500 index and TOPIX. Model comparisons are conducted based on the marginal likelihood for various SV models including the superposition model.
A Lightweight Protocol for Interconnecting Heterogeneous Devices in Dynamic Environments
Authors: Kevin C. Almeroth, Katia Obraczka, Dante de Lucia
Venue: Proceedings of the 1999 IEEE International Conference on Multimedia Computing and Systems - Volume 02 (1999)

In the near future people will be able to move freely and still have seamless network and Internet connectivity. One implication of this new style of interaction is an increased diversity in the types of devices which will be used to maintain connectivity. While many of the Internet protocols have proven successful and long-lived in traditional networks, we believe they will be inappropriate for use in communicating among limited-capability devices. In this paper, we introduce a new network layer protocol for intra-network communication in clouds containing devices with varying processing and communication capabilities. Our proposed protocol, called Pseudo-IP, is designed to operate among devices in the farthest branches/leaves of an intranet while providing inter-network connectivity with other clouds and with the existing IP-based Internet infrastructure. Pseudo-IP will accommodate a wide range of devices with varying power, processing, and communication capabilities, while supporting a variety of applications.
The eBayers Guide to the Galaxy B&W Edition for Ebay Web Marketing & Internet Advertising: The must have eBay Marketing & Advertising book for Buyers & Sellers
Authors: Harry J. Misner
Venue:  (2008)

This eBay guide was written to give you the basics needed to be a successful Buyer or Seller on eBay. EBay can be a great alternative Web Marketing, Computer & Internet Advertising, or Online Promotion tool. So no matter what Industry or Profession you're in, eBay can be a great asset to small businesses or inspired entrepreneurs everywhere. Online auctions can improve entrepreneurship which in turn will improve the business culture of companies big & small.
Fast block matching using prediction and rejection criteria
Authors: Yi-Ching Liaw, Jim Z. C Lai, Zuu-Chang Hong
Venue: Signal Processing (2009)

In this paper, we present a fast block matching algorithm by making use of the correlation between layers of the sum pyramid for a block. To speed our method, an algorithm is also developed to predict the initial motion vector for a template block. Using the elimination criteria and predicted motion vector, our method can further reduce the computational complexity significantly. Compared with the full search block matching algorithm, our approach can reduce the computing time by a factor of 9.9-28.2 with the peak signal-to-noise ratio (PSNR) degradation of 0.00-0.03dB. Compared to WinUpMI, which is the fastest block matching algorithm preserving global optimality as far as we know, our method can reduce the computing time by 4.9-52.5% with the PSNR degradation of 0.00-0.03dB. Our method can reduce the computing time of predictive search area approach for fast block motion estimation (PSAFBME) by 50-96% with about the same PSNR.
A New Blind Adaptive Array Antenna Based on CMA Criteria for M-Ary/SS Signals Suitable for Software Defined Radio Architecture
Authors: Miho Kozuma, Atsushi Sasaki, Yukihiro Kamiya, Takeo Fujii, Kenta Umebayashi, Yasuo Suzuki
Venue: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (2008)

M-ary/SS is a version of Direct Sequence/Spread Spectrum (DS/SS) aiming to improve the spectral efficiency employing orthogonal codes. However, due to the auto-correlation property of the orthogonal codes, it is impossible to detect the symbol timing by observing correlator outputs. Therefore, conventionally, a preamble has been inserted in M-ary/SS signals. In this paper, we propose a new blind adaptive array antenna for M-ary/SS systems that combines signals over the space axis without any preambles. It is surely an innovative approach for M-ary/SS. The performance is investigated through computer simulations.
Prediction of building energy consumption by using artificial neural networks
Authors: Betul Bektas Ekici, U. Teoman Aksoy
Venue: Advances in Engineering Software (2009)

In this study, the main objective is to predict buildings energy needs benefitting from orientation, insulation thickness and transparency ratio by using artificial neural networks. A backpropagation neural network has been preferred and the data have been presented to network by being normalized. The numerical applications were carried out with finite difference approach for brick walls with and without insulation of transient state one-dimensional heat conduction. Three different building samples with different form factors (FF) were selected. For each building samples 0-2.5-5-10-15cm insulations are assumed to be applied. Orientation angles of the samples varied from 0^o to 80^o and the transparency ratios were chosen as 15-20-25%. A computer program written in FORTRAN was used for the calculations of energy demand and ANN toolbox of MATLAB is used for predictions. As a conclusion; when the calculated values compared with the outputs of the network, it is proven that ANN gives satisfactory results with deviation of 3.43% and successful prediction rate of 94.8-98.5%.
Comparing the use of tangible and graphical programming languages for informal science education
Authors: Michael S. Horn, Erin Treacy Solovey, R. Jordan Crouser, Robert J.K. Jacob
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

Much of the work done in the field of tangible interaction has focused on creating tools for learning; however, in many cases, little evidence has been provided that tangible interfaces offer educational benefits compared to more conventional interaction techniques. In this paper, we present a study comparing the use of a tangible and a graphical interface as part of an interactive computer programming and robotics exhibit that we designed for the Boston Museum of Science. In this study, we have collected observations of 260 museum visitors and conducted interviews with 13 family groups. Our results show that visitors found the tangible and the graphical systems equally easy to understand. However, with the tangible interface, visitors were significantly more likely to try the exhibit and significantly more likely to actively participate in groups. In turn, we show that regardless of the condition, involving multiple active participants leads to significantly longer interaction times. Finally, we examine the role of children and adults in each condition and present evidence that children are more actively involved in the tangible condition, an effect that seems to be especially strong for girls.
Synchronous microcomputer system for on-board missile guidance and control
Authors: Frank J. Langley, Joseph J. Cooney
Venue: Proceedings of the May 19-22, 1975, national computer conference and exposition (1975)

The design, development and production of missiles to cover a range of presently defined missions with the capability of being upgraded to accommodate changing threat situations and advancing technology without major redesign, stresses the need for more modular guidance and control electronics possessing both physical and electrical flexibility features at lowest cost.
A Scene Representation Application Implementing LASeR Using Object-Based Timing Model
Authors: Xiaocong Zhou, Jianping Chen, Tiejun Huang
Venue: Proceedings of the 9th Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing (2008)

In this paper, we present a multimedia scene representation application implementing MPEG4-Part 20 Lightweight Application Scene Representation standard (LASeR). In this paper we propose an object-based timing model to ensure all the elements are rendered in correct time, and we also propose corresponding strategies to deal with the user's actions.
An Algorithm for Finding Input-Output Constrained Convex Sets in an Acyclic Digraph
Authors: Gregory Gutin, Adrian Johnstone, Joseph Reddington, Elizabeth Scott, Anders Yeo
Venue: Graph-Theoretic Concepts in Computer Science: 34th International Workshop, WG 2008, Durham, UK, June 30 --- July 2, 2008. Revised Papers (2008)

A set X of vertices of an acyclic graph is convex if any vertex on a directed path between elements of X is itself in X. We construct an algorithm for generating all input-output constrained convex (IOCC) sets in an acyclic digraph, which uses several novel ideas. We show that our algorithm is more efficient than algorithms described in the literature in both the worst case and computational experiments. IOCC sets of acyclic digraphs are of interest in the area of modern embedded processor technology.
Synthesis of fiber Bragg grating parameters from reflectivity with probabilistic global search Lausanne
Authors: Guiling Huang, Yinping Miao, Luming Zhao, Qida Zhao, Songfen Liu, Zhiguo Meng
Venue: Proceedings of the 2008 International Conference on Advanced Infocomm Technology (2008)

A simple and accurate new method for synthesis of fiber gratings with advanced characteristics is proposed. By combining a new direct stochastic algorithm for global search called probabilistic global search Lausanne (PGSL) and transfer matrix method, we obtain a promising method synthesizing the physical parameters of a fiber Bragg grating (FBG) structure from its reflectivity. The method can be applied over uniform and nonuniform FBGs, and would be useful for other inverse problems. To demonstrate the effectiveness of the method, the synthesis of a fiber Bragg grating with triangular spectrum is presented.
Multimodal Speaker Identification Based on Text and Speech
Authors: Panagiotis Moschonas, Constantine Kotropoulos
Venue: Biometrics and Identity Management: First European Workshop, BIOID 2008, Roskilde, Denmark, May 7-9, 2008. Revised Selected Papers (2008)

This paper proposes a novel method for speaker identification based on both speech utterances and their transcribed text. The transcribed text of each speaker's utterance is processed by the probabilistic latent semantic indexing (PLSI) that offers a powerful means to model each speaker's vocabulary employing a number of hidden topics, which are closely related to his/her identity, function, or expertise. Mel-frequency cepstral coefficients (MFCCs) are extracted from each speech frame and their dynamic range is quantized to a number of predefined bins in order to compute MFCC local histograms for each speech utterance, which is time-aligned with the transcribed text. Two identity scores are independently computed by the PLSI applied to the text and the nearest neighbor classifier applied to the local MFCC histograms. It is demonstrated that a convex combination of the two scores is more accurate than the individual scores on speaker identification experiments conducted on broadcast news of the RT-03 MDE Training Data Text and Annotations corpus distributed by the Linguistic Data Consortium.
Implications of Internet architecture on net neutrality
Authors: Scott Jordan
Venue: ACM Transactions on Internet Technology (TOIT) (2009)

Net neutrality represents the idea that Internet users are entitled to service that does not discriminate on the basis of source, destination, or ownership of Internet traffic. The United States Congress is considering legislation on net neutrality, and debate over the issue has generated intense lobbying. Congressional action will substantially affect the evolution of the Internet and of future Internet research. In this article, we argue that neither the pro nor anti net neutrality positions are consistent with the philosophy of Internet architecture. We develop a net neutrality policy founded on a segmentation of Internet services into infrastructure services and application services, based on the Internet's layered architecture. Our net neutrality policy restricts an Internet service Provider's ability to engage in anticompetitive behavior while simultaneously ensuring that it can use desirable forms of network management. We illustrate the effect of this policy by discussing acceptable and unacceptable uses of network management.
We'll Take Care of All Your Problems
Authors: Isabel Beichl
Venue: Computing in Science and Engineering (2009)

Editor-in-chief Isabel Beichl describes how computational scientists and engineers can help improve their current IT situations.