ppxscal/embedding_network huggingface dataset:
AdHoc probe: end-to-end capacity probing in wireless ad hoc networks
Authors: Ling-Jyh Chen, Tony Sun, Guang Yang, M. Y. Sanadidi, Mario Gerla
Venue: Wireless Networks (2009)

Knowledge of end-to-end path capacity is useful for video/audio stream adaptation, network management and overlay design. Capacity estimation in wired and last-hop wireless networks has been extensively investigated, but a thorough and systematic study in ad hoc, multihop wireless networks is still lacking. Yet the rate of a wireless link can change dynamically (and rapidly) due to changes in interference, distance or energy optimization policy. Timely knowledge of path capacity is key to efficient routing, traffic management and application deployment. In this paper, we present AdHoc Probe, a packet-pair based technique, to estimate end-to-end path capacity in ad hoc wireless networks. We apply AdHoc Probe to path capacity estimation in auto rate wireless networks with variable displacement and interference; and, in remote wireless networks across the Internet. Using analysis, simulation and testbed experiments, we show AdHoc Probe can withstand mobility and is able to trace the rate adaptation of wireless networks timely and correctly. AdHoc Probe is simpler, faster and much less intrusive than current schemes.
Secure pairing of interface constrained devices
Authors: Claudio Soriente, Gene Tsudik, Ersin Uzun
Venue: International Journal of Security and Networks (2009)

Secure initial pairing of electronic gadgets is a challenging problem because of the usual lack of a common security infrastructure and the threat of so-called Man-in-the-Middle (MiTM) attacks. A number of techniques have been proposed to address the problem, but many are not applicable to devices lacking required interfaces, such as displays or speakers. In this paper, we introduce a new secure device pairing concept that involves using the human body either as the communication medium for - or the source of - the common secret. We implement the concept as a suite of practical pairing protocols for interface constrained devices.
An example of WiMAX application deployment in campus environments
Authors: Whai-En Chen
Venue: Proceedings of the International Conference on Mobile Technology, Applications, and Systems (2008)

Students often use their notebooks, handsets or Personal Digital Assistants (PDAs) to access Internet or download the course materials from the campus website through the 802.11 access points (APs) that are deployed in the campus buildings. However, there are some places such as playground which are far away from the buildings and there are no available network lines to connect the APs to the campus backbone. In these areas without available network lines, we utilize WiMAX to extend wireless access coverage to 90%. Moreover, to attract the students to use WiMAX environment, we also deploy several interesting SIP applications. This paper first describes NIU WiMAX deployment including the radio access network and core network. Then, three SIP applications are described in this paper.
New Products
Venue: IEEE MultiMedia (2009)

This article features some of the latest advances in multimedia technology.
An Enhanced DMA Controller in SIMD Processors for Video Applications
Authors: Guillermo Payá-Vayá, Javier Martín-Langerwerf, Sören Moch, Peter Pirsch
Venue: Proceedings of the 22nd International Conference on Architecture of Computing Systems (2009)

Although current SIMD processor architectures can improve the processing performance by exploiting the data level parallelism inherent in video applications, an important performance penalty appears when processing data that is not formatted in an amenable way, e.g. unaligned memory access. This paper presents an enhanced DMA controller that performs block-based data transfers and a realignment when accessing a word in an external memory that is not aligned with the natural data memory/bus width boundary. Moreover, the enhanced DMA controller performs a signal extension while accessing data outside a specific region, e.g. a video frame, decreasing the total amount of processing cycles required for a typical video application. Performance improvements of up to 25% can be achieved when running a highly time consuming video encoding task (motion estimation) on a generic VLIW architecture with the enhanced DMA controller compared to a basic block-transfer DMA controller.
Using Interval Temporal Logic and Inference Rules for the Automatic Generation of Multimedia Presentations
Venue: Proceedings of the 1996 International Conference on Multimedia Computing and Systems (1996)

We propose a mechanism and system for the automatic generation of interactive multimedia presentations from their specifications. A presentation specification contains three parts: the resources, the temporal information, and the spatial information. We use a ICON programming technique and a graphical user interface allow the presentation designer to quickly specify what he/she wants. Our system takes these requirements and relies on inference rules written in Prolog to generate interactive presentations. These inference rules are based on interval temporal logic and important issues in multimedia presentations, such as the hardware limitations of an ordinary personal computer and the properties of a multimedia resource. Our prototype system run under MS Windows. The early experience of using the system shows that it is feasible to use logic inference rules to assist the design of good multimedia presentations.
The communication unit for remote data acquisition via the internet
Authors: Petr Mlynek, Martin Koutny, Jiri Misurec
Venue: Proceedings of the 7th conference on Circuits, systems, electronics, control and signal processing (2008)

The most widely used networks for data communication are TCP/IP networks. One of the application areas is the remote data acquisition in power engineering, where the consumption of electric power is read in so-called continual metering. Electrometers can be connected to the TCP/IP network by means of the communication unit. Thanks to the communication unit, remote acquisition of power consumption data is enabled. This article focuses on the connection and the methods of testing of communication unit in an experimental network. The article also deals with the design of the authentication, secure data transmission, and transmission block integrity.
A critical analysis and improvement of advanced access content system drive-host authentication
Authors: Jiayuan Sui, Douglas R. Stinson
Venue: International Journal of Applied Cryptography (2009)

This article presents a critical analysis of the Advanced Access Content System drive-host authentication scheme. A few weaknesses are identified which could lead to various attacks on the scheme. In particular, we observe that the scheme is susceptible to unknown key-share and man-in-the-middle attacks. Modifications (based on the ISO and the SIGMA protocols) of the scheme are suggested in order to provide better security. A proof of security of the modified scheme based on the ISO protocol is also presented. The modified schemes achieve better efficiency than the original scheme.
Use of digital elevation models and drainage patterns for locating active faults in the Upper Gangetic Plain, India
Authors: B. Bhosle, B. Parkash, A. K. Awasthi, P. Pati
Venue: International Journal of Remote Sensing (2009)

Twelve normal, active faults transverse to the regional Ganga and Yamuna longitudinal faults have been identified in the western part of the gently sloping Upper Gangetic Plain from the interpretation of digital elevation models (DEMs), prepared by manual digitization of spot heights from 1 : 50 000 scale topographic maps. High vertical exaggeration of these DEMs reveals artefactual morphostructures such as 'cliffs' and 'significant breaks in slopes' that are indicative of faults. Convergent drainage on the upthrown blocks, initiation of new streams on the downthrown blocks, offsetting of drainage and anomalous sinuosity of streams close to faults have provided additional corroborating evidence of the faults. Detailed field investigations indicate relatively steeper slopes close to the inferred faults than the adjoining areas. Erosion of the upthrown blocks and deposition of sediments on the downthrown blocks in the form of terminal fans under a semi-arid climate formed features typical of many such faults.
Ksplice: automatic rebootless kernel updates
Authors: Jeff Arnold, M. Frans Kaashoek
Venue: Proceedings of the 4th ACM European conference on Computer systems (2009)

Ksplice allows system administrators to apply patches to their operating system kernels without rebooting. Unlike previous hot update systems, Ksplice operates at the object code layer, which allows Ksplice to transform many traditional source code patches into hot updates with little or no programmer involvement. In the common case that a patch does not change the semantics of persistent data structures, Ksplice can create a hot update without a programmer writing any new code. Security patches are one compelling application of hot updates. An evaluation involving all significant x86-32 Linux security patches from May 2005 to May 2008 finds that most security patches-56 of 64-require no new code to be performed as a Ksplice update. In other words, Ksplice can correct 88% of the Linux kernel vulnerabilities from this interval without the need for rebooting and without writing any new code. If a programmer writes a small amount of new code to assist with the remaining patches (about 17 lines per patch, on average), then Ksplice can apply all 64 of the security patches from this interval without rebooting.
Consistent and scalable cache replication for multi-tier J2EE applications
Authors: Francisco Perez-Sorrosal, Marta Patiño-Martinez, Ricardo Jimenez-Peris, Bettina Kemme
Venue: Proceedings of the ACM/IFIP/USENIX 2007 International Conference on Middleware (2007)

Data centers are the most critical infrastructure of companies demanding higher and higher levels of quality of service (QoS) in terms of availability and scalability. At the core of data centers are multi-tier architectures providing service to applications. Replication is heavily used in this infrastructure for either availability or scalability but typically not for both combined. Additionally, most approaches replicate a single tier, making the non-replicated tiers potential bottlenecks and single points of failure. In this paper, we present a novel approach that provides both availability and scalability for multi-tier applications. The approach uses a replicated cache that takes into account both the application server tier (middle-tier) and the database (back-end). The underlying replicated cache protocol fully embeds the replication logic in the application server. The protocol exhibits good scalability as shown by our evaluation based on the new industrial benchmark for J2EE multi-tier systems, SPECjAppServer.
A method for member selection of R&D teams using the individual and collaborative information
Authors: Zhi-Ping Fan, Bo Feng, Zhong-Zhong Jiang, Na Fu
Venue: Expert Systems with Applications: An International Journal (2009)

The member selection is an important decision problem in the formation of R&D teams. Selecting suitable members will facilitate the success of R&D projects. In the existing methods for partner selection, the individual information to measure the individual performance of members is mostly used, while the collaborative information to measure the collaborative performance between members is seldom considered. Therefore, this paper proposes a method for member selection of R&D teams, in which both the individual information of members and the collaborative information between members are considered. In order to select desired members, a bi-objective 0-1 programming model is built using the individual and collaborative information. To solve the model, a multi-objective genetic algorithm is developed since the model is NP-hard. A practical example followed by simulation experiment is used to illustrate the applicability of the proposed method. Additionally, the experimental results show that the proposed method can support satisfactory and high quality member selection.
Impulsively control complex networks with different dynamical nodes to its trivial equilibrium
Authors: Qun-Jiao Zhang, Jun-An Lu
Venue: Computers Mathematics with Applications (2009)

This paper investigates the stability of complex networks with different dynamical nodes by impulsive control. A model of complex network with different dynamical nodes is presented and then the impulsive controlled network is written as a whole vector equation. Specially, the coupling matrix in this model is not assumed to be diffusive or irreducible. Some criteria and corollary are derived for the presented impulsive controlled complex networks. Furthermore, the results are illustrated by a complex network composed of the chaotic Lorenz systems and Chua's circuit systems. All the numerical simulations verify the correctness of the theoretical results.
Social Software and Web 2.0 Technology Trends
Authors: P. Candace Deans
Venue: Premier Reference Source (2008)

Very little has been written to address the emerging trends in social software and technology. With these technologies and applications being relatively new and evolving rapidly, research is wide open in these fields.Social Software and Web 2.0 Technology Trends fills this critical research need, providing an overview of the current state of Web 2.0 technologies and their impact on organizations and educational institutions. Written for academicians and practicing managers, this estimable book presents business applications as well as implementations for institutions of higher education with numerous examples of how these technologies are currently being used. Delivering authoritative insights to a rapidly evolving domain of technology application, this book is an invaluable resource for both academic libraries and for classroom instruction.
Influence of Routing Protocol on VoIP Quality Performance in Wireless Mesh Backbone
Authors: Arlen Nascimento, Saulo Queiroz, Edjair Mota, Leandro Galvão, Edson Nascimento
Venue: Proceedings of the 2008 The Second International Conference on Next Generation Mobile Applications, Services, and Technologies (2008)

In this paper we focus on the following question: how routing protocols, working under different channel conditions, can influence the human perceived quality of VoIP calls in a wireless mesh backbone? In order to respond this question, we propose a study case where we analyze two routing approaches in a 802.11 Wireless Mesh Backbone, namely, reactive AODV and proactive OLSR. We calculated the voice speech quality by making use of a reviewed version of ITU-T E-Model proposed in previous work. Results obtained from highly credible stochastic simulation environment, also described in this paper, showed that AODV performs better in very hostile mediums while OLSR presents better results when more friendly mediums take place.
Weight choosability of graphs
Authors: Tomasz Bartnicki, Jarosław Grytczuk, Stanisław Niwczyk
Venue: Journal of Graph Theory (2009)

Suppose the edges of a graph G are assigned 3-element lists of real weights. Is it possible to choose a weight for each edge from its list so that the sums of weights around adjacent vertices were different? We prove that the answer is positive for several classes of graphs, including complete graphs, complete bipartite graphs, and trees (except K2). The argument is algebraic and uses permanents of matrices and Combinatorial Nullstellensatz. We also consider a directed version of the problem. We prove by an elementary argument that for digraphs the answer to the above question is positive even with lists of size two. &copy; 2008 Wiley Periodicals, Inc. J Graph Theory 60: 242256, 2009
Research on the MPCG algorithm applied in the three dimensional electric field calculation of SF6 circuit breaker in three-phase-in-one tank GIS
Authors: Ma Ai-qing, Jiang Xiu-chen, Zeng Yi
Venue: WSEAS TRANSACTIONS on SYSTEMS (2008)

With the structure miniaturization of SF6 Circuit Breaker in three-phase-in-one-tank GIS, improvement of internal structure design and layout should be taken into account to balance the electric field intensity distribution among phases. By calculating the three-dimensional electric field intensity distribution in GIS with FEM to guide and optimize its internal structure will improve the electric field intensity distribution status among each phase or whole field domain and can avoid insulated medium breakdown due to excessiveness of local electric field intensity. Based on the character of the complex structure of the SF6 circuit breaker in three-phase-in-one-tank GIS (Gas Insulated Switchgear), the modified preconditioned conjugate gradient (MPCG) algorithm applied to solve multi-nodes and multi-elements large sparse real positive defined symmetric matrix is analyzed. The program diagram of MPCG algorithm is also proposed. According to the sparse symmetric character of coefficient matrix, the method of storing coefficient matrix effectively and rapidly is studied and new data structure is adopted. The finite element calculation mathematical model and physical equations of SF6 circuit breaker are founded in this paper. The large sparse matrix is solved by using the MPCG algorithm. The electric field intensity and potential distribution is calculated under power frequency voltage and their corresponding cutaway charts and planforms are given. They can provide a useful design parameter for designing the circuit breaker optimum configuration in GIS.
Facial Expression Recognition with 3D Deformable Models
Authors: Christoph Mayer, Matthias Wimmer, Martin Eggers, Bernd Radig
Venue: Proceedings of the 2009 Second International Conferences on Advances in Computer-Human Interactions (2009)

We present a fully automated three-dimensional modelbased,real-time capable approach to distinguish six universalfacial expressions from visual images of human faces.The face model is fitted to the images of a publicly availabledata base. From the model parameters two sets of featuresare computed, person-specific and non-person-specific toestimate the facial expression visible in the current imagesequence. We integrate the complex, state-of-the-artCandide-3 face model, which is specifically appropriatefor facial expression recognition [13] and is also publiclyavailable, which further increases the comparability of ourapproach. Our experimental evaluation presents recognitionrates of the six basic facial expressions defined by Ekmanet al [6].
Simulation and mathematical programming for a multi-objective configuration problem in a hybrid flow shop
Authors: Pierpaolo Caricato, Antonio Grieco, Francesco Nucci
Venue: Proceedings of the 40th Conference on Winter Simulation (2008)

This paper introduces an application of simulation-based multi-objective optimization to solve a system configuration problem in a hybrid flow shop system. The test case is provided by a firm that manufactures mechanical parts for the automotive sector. We present an architecture that uses both discrete-event simulation and mathematical programming tools in order to solve the problem. The multiple-objective nature of the problem is preserved throughout the proposed approach, using Pareto-dominance concepts both to eliminate inefficient solutions within the proposed solution algorithm and to provide the user with efficient solutions. Mathematical programming is used to cull the required number of simulation runs. Computational results obtained using a real-world case study are reported. The proposed approach is benchmarked against a general purpose simulation-optimization engine in order to prove its effectiveness.
A study on customer involvement in final assembly for DIY products
Authors: Jyh-Wen Ho, Yeu-Shiang Huang
Venue: Computers and Industrial Engineering (2009)

The objective of this paper is to investigate the degree of the customer involvement in final assembly (CIFA) in establishing a do-it-yourself (DIY) product design in order to achieve cost minimization of the incumbent firm in a competitive environment. Such a decision-making problem is addressed with consideration of the competitors and the learning curve effect within the three hypothetical stages of a product life cycle (PLC). Accordingly, a Bayesian decision model that incorporates expert opinions with available information is proposed to determine the optimal CIFA ratio for a DIY product. Finally, a numerical example is used to illustrate the effectiveness of the proposed model, and sensitivity analyses are also performed in light of the numerical example.
Recognizing join points from their context through graph grammars
Authors: Walter Cazzola, Stefano Salvotelli
Venue: Proceedings of the 13th workshop on Aspect-oriented modeling (2009)

Aspect-oriented software development has been proposed with the intent of better modularizing object-oriented programs by confining crosscutting concerns in aspects. Unfortunately, the aspects do not completely keep their promises. Most of the current approaches revealed to be tightly coupled with the base-program's code compromising the modularity. Moreover, the feasible modularization has a coarse-grain since the aspects can only be woven at the public interface level but not on a generic statement. We have designed the Blueprint framework to overcome these limits. The join points are located through the description of the context where they could be found. This work is about the framework realization and the role that graph grammars play in locating the join points in the base-program from the context description.
BBS Sentiment Classification Based on Word Polarity
Authors: Shen Jie, Fan Xin, Shen Wen, Ding Quan-Xun
Venue: Proceedings of the 2009 International Conference on Computer Engineering and Technology - Volume 01 (2009)

Sentiment classification is an applied technology with great significance. It can help people find right reviews in a more efficient way. In this paper, we present a novel efficient method for BBS sentiment classification. Through extracting sentiment-bearing words from WordNet using the maximum entropy, a ranking criterion based on a function of the probability of having Polarity or not is introduced. The words with polarity are selected as features, which are processed with SVM classifier at the following step. The experimental results show that our method achieves high performance.
A robot that says bad!: using negative and positive social feedback from a robotic agent to save energy
Authors: Jaap Ham, Cees Midden
Venue: Proceedings of the 4th ACM/IEEE international conference on Human robot interaction (2009)

Two experiments explored the persuasive effects of social feedback, as provided by a robotic agent, on behavioral change. Results indicate stronger persuasive effects of social feedback than of factual feedback (Experiment 1) or factual evaluative feedback (Experiment 2), and of negative feedback (especially social but also factual) than of positive feedback.
Fusion Based Blind Image Steganalysis by Boosting Feature Selection
Authors: Jing Dong, Xiaochuan Chen, Lei Guo, Tieniu Tan
Venue: Proceedings of the 6th International Workshop on Digital Watermarking (2008)

In this paper, a feature-level fusion based approach is proposed for blind image steganalysis. We choose three types of typical higher-order statistics as the candidate features for fusion and make use of the Boosting Feature Selection (BFS) algorithm as the fusion tool to select a subset of these candidate features as the new fusion feature vector for blind image steganalysis. Support vector machines are then used as the classifier. Experimental results show that the fusion based approach increases the blind detection accuracy and also provides a good generality by identifying an untrained stego-algorithm. Moreover, we evaluate the performance of our candidate features for fusion by making some analysis of the components of the fusion feature vector in our experiments.