ppxscal/embedding_network huggingface dataset:
An Efficient Wireless Communicated Architecture Based on TD-SCDMA & WiMAX
Authors: Zhenjun Li, Yunting Lu
Venue: Proceedings of the 2009 Asia-Pacific Conference on Information Processing - Volume 02 (2009)

One of the focal points in the telecommunication research is the integration of TD-SCDMA and WiMAX.Whether TD-SCDMA is compatible to other 3G standards is crucial to the success of 3G in China. Based on the analysis of the advantages and disadvantages of TD-SCDMA and WiMAX in wireless transmission, a new framework of wireless telecommunication is proposed. In this framework, when the source Mobile Station (MS) and target MS are located indifferent cells, they can use TD-SCDMA to communicate(defined as WAN mode in the paper), and when the source MS and target MS are located in the same cell, a wireless Mesh network will be built and the MSs can communicate using WiMAX as the air interface (defined as LAN mode). The proposed framework efficiently integrates the advantages of TD-SCDMA and WiMAX. Finally, based on simulation, the performance of the proposed framework demonstrates some advantages in actual wireless telecommunication.
Assessing ease of reconfiguration of conventional and Holonic manufacturing systems: Approach and case study
Authors: Wutthiphat Covanich, Duncan McFarlane
Venue: Engineering Applications of Artificial Intelligence (2009)

This paper focuses on comparing the ease of reconfiguration of Holonic and conventional manufacturing systems (HMS and CMS). By using the recently proposed guideline for assessing ease of reconfiguration [Covanich, W., McFarlane, D., Farid, A.M., 2008. Guidelines for Evaluating the Ease of Reconfiguration of Manufacturing Systems. Daejeon, South Korea. INDIN08], the paper evaluates the effort required to introduce a new machine into both conventional and Holonic manufacturing systems. Examining particularly the ease of reconfiguration, it is found that HMS with conventional hardware may have little advantage over CMS, while HMS with ideal hardware appears to have significant advantage over CMS.
Dynamic Communicators in MPI
Authors: Richard L. Graham, Rainer Keller
Venue: Proceedings of the 16th European PVM/MPI Users' Group Meeting on Recent Advances in Parallel Virtual Machine and Message Passing Interface (2009)

This paper describes a proposal to add support for dynamic communicators to the MPI standard. This adds the ability to grow or shrink a specified communicator, under well defined conditions. The goal is to make it possible for a new class of applications --- long-running, mission-critical, loosely coupled applications, running in a highly dynamic environment --- to use MPI libraries for their communication needs, and to enable HPC applications to adjust to changing system resources. Implementation analysis indicates that performance impact on existing high-performance MPI applications should be minimal, or non-existent. The changes to MPI implementations are expected to be well compartmentalized.
The Application of Analytic Hierarchy Process to Analyze Regional Sustainable Development: A Study of Shaoyang, China
Authors: Huang Xiongwei, Li Jian, Mo Xiaohong
Venue: Proceedings of the 2009 International Conference on Environmental Science and Information Application Technology - Volume 02 (2009)

Economy, society, environment and resource interact each other and constitute a complex system. Analytical hierarchy process (AHP) is a popular and powerful method for solving different problem of complex system. This paper presents an indicator system with hierarchical structure upon AHP to evaluate the status of sustainable development as an example for Shaoyang. In this research, we (1) discuss pathways in which to build a proper hierarchical structure, (2) describe the formulation of a AHP theory to predict the weight value of each indicator in the hierarchical structure and (3) report model results based upon data about economy, society, environment and resource from 2004-2007 in Shaoyang, China. The analysis result shows that the sustainable development status become better than before from 2004-2007: Comprehensive score of economy sub-system and environment sub-system keeps increasing, by contraries, the score of society sub-system and resource carry sub-system decreased slowly.
Breast Ultrasound Images Enhancement Using Fuzzy Logic
Authors: Yu-juan Wang, Shu-xi Lu
Venue: Proceedings of the 2009 First International Workshop on Database Technology and Applications (2009)

This paper presents an enhancement algorithm of the breast ultrasound image based on fuzzy logic. In order to fulfill the task of enhancement, we normalize the images and fuzzify the normalized images. Then we extract the edge and textural information in fuzzy domain and increase the contrast ratio measuring the degree of enhancement on the exchange of those ratios of the entire and partial information of image, and finally transform the enhanced ultrasound images back to the gray-scale domain using the defuzzification operation. Tested on a variety of ultrasound images, it is confirmed by the experimental results that the algorithm has better performance in enhancing images of the breast diseased parts.
An Evidence-Driven Probabilistic Inference Framework for Semantic Image Understanding
Authors: Spiros Nikolopoulos, Georgios Th. Papadopoulos, Ioannis Kompatsiaris, Ioannis Patras
Venue: Proceedings of the 6th International Conference on Machine Learning and Data Mining in Pattern Recognition (2009)

This work presents an image analysis framework driven by emerging evidence and constrained by the semantics expressed in an ontology. Human perception, apart from visual stimulus and pattern recognition, relies also on general knowledge and application context for understanding visual content in conceptual terms. Our work is an attempt to imitate this behavior by devising an evidence driven probabilistic inference framework using ontologies and bayesian networks. Experiments conducted for two different image analysis tasks showed improvement in performance, compared to the case where computer vision techniques act isolated from any type of knowledge or context.
Privatization and production efficiency in Taiwan's telecommunications industry
Authors: Chao-Chung Kang
Venue: Telecommunications Policy (2009)

Many managers, economists, and policy-makers have long believed that the production of a private enterprise is more efficient than that of a public one. This paper investigated whether it was good policy to privatize Taiwan's telecommunications industry by comparing the changes in efficiency in Chunghwa Telecom Company (CHT Co.) before and after privatization. The data envelopment analysis (DEA) model was used to evaluate their operational performance both pre- and post-privatization. The technical efficiency (CRS) computed with the CCR model assuming constant returns to scale, the technical efficiency (VRS), and the scale efficiency (VRS) were obtained with the BCC model assuming variable returns to scale, using the time-series data from CHT. The findings of this study show that the production efficiencies of CHT, both pre- and post-privatization are inefficient since all of the technical efficiencies are smaller than one.
The Potential of the BCI for Accessible and Smart e-Learning
Authors: Ray Adams, Richard Comley, Mahbobeh Ghoreyshi
Venue: Proceedings of the 5th International on ConferenceUniversal Access in Human-Computer Interaction. Part II: Intelligent and Ubiquitous Interaction Environments (2009)

The brain computer interface (BCI) should be the accessibility solution "par excellence" for interactive and e-learning systems. There is a substantial tradition of research on the human electro encephalogram (EEG) and on BCI systems that are based, inter alia, on EEG measurement. We have not yet seen a viable BCI for e-learning. For many users for a BCI based interface is their first choice for good quality interaction, such as those with major psychomotor or cognitive impairments. However, there are many more for whom the BCI would be an attractive option given an acceptable learning overhead, including less severe disabilities and safety critical conditions where cognitive overload or limited responses are likely. Recent progress has been modest as there are many technical and accessibility problems to overcome. We present these issues and report a survey of fifty papers to capture the state-of-the-art in BCI and the implications for e-learning.
Meet-in-the-Middle Attacks Using Output Truncation in 3-Pass HAVAL
Authors: Yu Sasaki
Venue: Proceedings of the 12th International Conference on Information Security (2009)

We propose preimage and pseudo-preimage attacks on short output lengths of the hash function 3-pass HAVAL, which is designed to be able to output various hash lengths by one algorithm. HAVAL executes a truncate function at the end of the hash computation in order to produce various output lengths. If the hash value is truncated, the internal state size becomes larger than the hash length. Hence, it appears that finding attacks faster than the exhaustive search becomes relatively hard. In this paper, we propose two types of preimage and pseudo-preimage attacks based on the meet-in-the-middle attack. A key point of our attack is how to deal with input information for truncate functions. The first approach works for various types of truncate functions. The second approach uses a property particular to the truncate function of HAVAL. As far as we know, these are the first preimage and pseudo-preimage attacks that work for short output lengths of HAVAL.
Positive circuits and maximal number of fixed points in discrete dynamical systems
Authors: Adrien Richard
Venue: Discrete Applied Mathematics (2009)

We consider a product X of n finite intervals of integers, a map F from X to itself, the asynchronous state transition graph @C(F) on X that Thomas proposed as a model for the dynamics of a network of n genes, and the interaction graph G(F) that describes the topology of the system in terms of positive and negative interactions between its n components. Then, we establish an upper bound on the number of fixed points for F, and more generally on the number of attractors in @C(F), which only depends on X and on the topology of the positive circuits of G(F). This result generalizes the following discrete version of Thomas' conjecture recently proved by Richard and Comet: If G(F) has no positive circuit, then @C(F) has a unique attractor. This result also generalizes a result on the maximal number of fixed points in Boolean networks obtained by Aracena, Demongeot and Goles. The interest of this work in the context of gene network modeling is briefly discussed.
The Transformation of Business Organizational Structures under the Environment of E-commerce
Authors: Luming Yang, Xianming Yang, Hong-li Hu
Venue: Proceedings of the 2009 IITA International Conference on Services Science, Management and Engineering (2009)

The E-Business, closely combined with the business management, has greatly pushed forward the transformation of business organizations. So it is important to apply the E-commerce to redesign the business organization and explore a new way to reform business in accordance with the China’s actual condition. The paper tries to raise ideas through analyzing how to transform organization structures under the environment of E-commerce.
Development of Municipal Infrastructure Metadata System and Standard
Authors: Wen Zeng, Baogang Wang
Venue: Proceedings of the 2009 International Conference on Environmental Science and Information Application Technology - Volume 02 (2009)

Municipal infrastructure industry includes numerous sub-industries, which manages massive multi-source spatial data and non-spatial data. Metadata provide guarantee for efficient data management. Traditional metadata system developed on single dataset level has difficulty in meeting the demand for municipal infrastructure comprehensive management. Therefore, this paper proposes a method which produces database-metadata, dataset-metadata, entity-metadata and domain-metadata separately, and they compose the municipal infrastructure metadata system. Furthermore, based on the design of hierarchical metadata system a municipal infrastructure metadata standard is introduced. The design of the metadata system and the metadata standard may effectively improve facility management, and meet the demand of data sharing and interoperability for municipal infrastructure industry.
A hybrid optimization approach for chip placement of multi-chip module packaging
Authors: Ping Yang, Xiangnan Qin
Venue: Microelectronics Journal (2009)

The aim of this article is to provide a systematic method to perform optimization design for chip placement of multi-chip module in electronic packaging. Based on the investigation of the structural and thermal characteristics of multi-chip module, the key performance indexes of multi-chip module that include the lowest internal temperature objective, thermal-transfer accuracy, chip placement are analyzed. A hybrid model is presented by using genetic algorithm and response surface methodology for optimization. Furthermore, some design processes for improving the performance are induced. Finally, an example is discussed to apply the method.
A Mining Maximal Frequent Itemsets over the Entire History of Data Streams
Authors: Yinmin Mao, Hong Li, Lumin Yang, Zhigang Chen, Lixin Liu
Venue: Proceedings of the 2009 First International Workshop on Database Technology and Applications (2009)

Mining maximal frequent itemsets has been widely concerned. However, mining data streams is more difficult than mining static databases because of the huge, high-speed and continuous characteristics of streaming data. This paper presents an algorithm, called IDSM-MFI. The algorithm uses a synopsis data structure to store the items of transactions embedded data streams so far. It adopts a top-bottom and bottom-top method to mine the set of all maximal frequent itemsets in landmark windows over data stream, which can be output in real time based on users' specified thresholds. Theoretical analysis and experimental results show that our algorithm is efficient and scalable for mining the set of all maximal frequent itemsets over the entire history of data stream.
Flexible Electronics: Materials and Applications, 1st edition
Authors: William S. Wong, Alberto Salleo
Venue: Electronic Materials Science & Technology (2009)

Flexible-electronics is rapidly finding many main-stream applications where low-cost, ruggedness, light weight, unconventional form factors and ease of manufacturability are just some of the important advantages over their conventional rigid-substrate counterparts. Flexible Electronics: Materials and Applications surveys the materials systems and processes that are used to fabricate devices that can be employed in a wide variety of applications, including flexible flat-panel displays, medical image sensors, photovoltaics, and electronic paper. Materials discussed range from polymeric semiconductors to nanotube transparent conductors, highlighting the important characteristics of each system and their target applications. An overview of the performance benchmarks for the different materials is given in order to allow a direct comparison of these different technologies. Furthermore, the devices and processes most suitable for given applications in flexible electronics are identified. Topics covered include: An overview and history of flexible electronics Novel materials for solution-processable thin-film electronic devices and their properties Low-temperature processing of conventional materials and devices on plastic foils Novel techniques, such as printing and roll-to-roll processing, for large-area flexible electronics manufacturing Materials and device physics relevant to flexible electronics Device integration on flexible substrates Mechanical and electronic characteristics for thin-film transistors and nano-scale transparent conductors on flexible platforms Applications towards flexible displays, sensors, actuators, solar energy, radio-frequency identification, and micro-electro-mechanical systems Written by leading researchers in the field, Flexible Electronics: Materials and Applications serves as a reference for researchers, engineers, and students interested in the characteristics, capabilities, and limitations of these exciting materials and emerging applications.
A NGSA-II Based Parameter Calibration Algorithm for Traffic Microsimulation Model
Authors: Weinan Huang, Jian Sun
Venue: Proceedings of the 2009 International Conference on Measuring Technology and Mechatronics Automation - Volume 03 (2009)

Traffic microsimulation is a widely used tool in the field of traffic engineering, this tool will help engineers to evaluate the current traffic system and analyze the alternate plans. In the process of applying traffic microsimulation, the step of model calibration is critical and difficult. The main task of this step is to adjust the parametric values of simulation model, and this task can localize the microsimulation model. Model calibration process includes 3 main sub-steps, and one of these sub-steps, searching for the optimal parametric values, is confusing and time-consuming. This parameters searching work is always handled by experienced traffic engineers, and associated with a great amount of statistic analysis. In order to improve the efficiency and accuracy of this step, a type of methods, which takes parametric values searching problem as nonlinear optimization problem, has been discussed by several papers. However, there are still some disadvantages in those methods. In this paper, we converted the parametric values searching problem into a multi-objective optimization problem, and applied NGSA-Ⅱ, a fast and elitist multi-objective genetic algorithm, to solve it. In addition, this approach is applied to calibrate a microsimulation model for a freeway merging section as an example.
Size from Specular Highlights for Analyzing Droplet Size Distributions
Authors: Andrei C. Jalba, Michel A. Westenberg, Mart H. Grooten
Venue: Proceedings of the 13th International Conference on Computer Analysis of Images and Patterns (2009)

In mechanical engineering, heat-transfer models by dropwise condensation are under development. The condensation process is captured by taking many pictures, which show the formation of droplets, of which the size distribution and area coverage are of interest for model improvement. The current analysis method relies on manual measurements, which is time consuming. In this paper, we propose an approach to automatically extract the positions and radii of the droplets from an image. Our method relies on specular highlights that are visible on the surfaces of the droplets. We show that these highlights can be reliably extracted, and that they provide sufficient information to infer the droplet size. The results obtained by our method compare favorably with those obtained by laborious and careful manual measurements. The processing time per image is reduced by two orders of magnitude. 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
Challenges of Online Game Development: A Review
Authors: Graham Morgan
Venue: Simulation and Gaming (2009)

The focus of this article is to determine how the engineering practices common in online game development may be approached differently to promote more diverse online gaming scenarios. The technical difficulties in providing online gaming are not trivial, requiring substantially larger budgets compared with their non-online counterparts: Commercial failure of an online game could be costly. Therefore, when considering alternate engineering approaches, those that appear tried and tested in other domains, and hence may be lower-cost solutions, are considered.
Analysis on Dust Emission Characteristics in the Western Desertificational Fringe Area of Hunshandake Sand-Land
Authors: Yue Ping, Liu Xiaoyun, Yang Qiguo
Venue: Proceedings of the 2009 International Conference on Environmental Science and Information Application Technology - Volume 03 (2009)

This paper analyzes the characteristics of surface dust emission physical, including the threshold wind velocity and the threshold friction velocity, by using the dust storm intensifying observations in the Zhurihe area during the spring of 2006 and IMGRASS experimental data and then makes a contrast with the observations in the hinterland of Hunshandake sand-land. The result shows as follows that the mass concentration of PM10 in the western desertified area of Hunshandake sand-land is nearly proportion to the third power of the horizontal wind velocity, the fitting formula is. The threshold wind velocity is 5.5m/s. The dust mass concentration of PM10 and friction velocity meet the formula. The friction velocity is 0.38m/s. The physical characteristics mentioned above suggest that dust emission happens in the western fringe zone of Hunshandake but not the hinterland.
A Constraint Function Method for Solving Multiobjective Optimization Problems
Authors: Lu Baiquan, Gao Gaiqin, Wang Fei, Wang Jin, Li Jin
Venue: Proceedings of the 2009 WRI Global Congress on Intelligent Systems - Volume 04 (2009)

In this paper, a new method for solving the multiobjective optimization problems is proposed, which changes the multiobjective optimization problems to problems of solving nonlinear equations that can be solved by the methods of solving nonlinear equations such as reference [7]. Because usually there are much pareto optimal solution for multiobjective optimization problems. Some constraints on an objective function can be used as a prior information to constrain this equations in order to get distribution of pareto optimal solutions of this nonlinear equations, and some pareto optimal solutions are got by the method given in this paper. To show effectiveness of this method, the simulations of some examples are carried out by the proposed method. As a result, this indicates that the proposed method is very useful.
Learning Computer Science Fundamentals through Virtual Environments
Authors: James Braman, Giovanni Vincenti, Ana Maria Arboleda Diaz, Andrew Jinman
Venue: Proceedings of the 3d International Conference on Online Communities and Social Computing: Held as Part of HCI International 2009 (2009)

Utilizing the inherent visual qualities of immersive virtual environments can be advantageous for educating students on particular topics. Basic fundamentals in Computer Science curriculums often can be difficult for students to grasp due to high levels of abstraction and various theoretical frameworks used to describe important structures. Virtual worlds such as Second Life® provide a unique medium for education, allowing for the visualization of concepts coupled with the interaction potential that this environment allows. Briefly discussing traditional methods for teaching fundamental topics in several courses, we discuss how Second Life can be integrated into classroom instruction for the benefit of student understanding of complex materials. We outline some of our preliminary observations and student feedback as we begin to use virtual environments in new innovative ways.