ppxscal/embedding_network huggingface dataset:
Practical Application of Microcomputers to Aid the Handicapped
Authors: G. C. Vanderheiden
Venue: Computer (1981)

Microcomputers are providing rehabilitation engineers with powerful tools for designing cost-effective assistive devices. Potentials, approaches, and current shortcomings are discussed here.
Dynamic extent objects
Authors: Christian Queinnec
Venue: ACM SIGPLAN Lisp Pointers (1988)

Lisp objects are heap- rather than stack-allocated because their extent is generally indefinite. Since stack-deallocation is performed without running the garbage collector, speed improvements are expected. Dedicated hardware can stack-allocate objects associated with reference counters or microcode daemons such that one can exactly know the status of the object to be deallocated and perform whatever appropriate treatment (usually a copy in the heap) according to its reachability. However such a solution is not efficient on stock hardware. This paper presents and analyses a new technique to efficiently solve this problem. It creates first class dynamic extent objects (DEO) that are stack-allocated, permits to access them only while they are in the stack and prevent to follow up dangling pointers. Every usual indefinite extent object has its counterpart as a DEO associated with the same set of operators. Finally DEO do not require dedicated hardware and may be properly compiled. The technique can be used within other programming languages. Some performance figures are discussed at the end of the paper.
Monitoring, Controlling and Configuring a Wireless Household-Electric Network through LabVIEW Remote Virtual Interface.
Authors: Antonio Heronaldo de Sousa, Rafael Campos do Prado, Felipe Cubas Schulz
Venue: Proceedings of the 32nd IEEE Conference on Local Computer Networks (2007)

The objective of this work is to demonstrate the operation of a system that allows monitoring, controlling and configuring a wireless household-electric network using a Personal Digital Assistant (PDA) as the user interface. Initially, the wireless communication was established by Bluetooth. In the next step, the hardware and firmware of the appliance will be modified in order to implement a ZigBee protocol. LabVIEW has been used to develop the user interface in the PDA.
Constructing Connected Dominating Sets with Bounded Diameters inWireless Networks
Authors: Yingshu Li, Donghyun Kim, Feng Zou, Ding-Zhu Du
Venue: Proceedings of the International Conference on Wireless Algorithms,Systems and Applications (2007)

In wireless networks, due to the lack of fixed infrastructure or centralized management, a Connected Dominating Set (CDS) of the graph representing the network is an optimum candidate to serve as the virtual backbone of a wireless network. However, constructing a minimum CDS is NP-hard. Furthermore, almost all of the existing CDS construction algorithms neglect the diameter of a CDS, which is an important factor. In this paper, we investigate the problem of constructing a CDS with a bounded diameter in wireless networks and propose a heuristic algorithm, Connected Dominating Sets with Bounded Diameters (CDS-BD), with constant performance ratios for both the size and diameter of the constructed CDS.
Linear prediction using refined autocorrelation function
Authors: M. Shahidur Rahman, Tetsuya Shimamura
Venue: EURASIP Journal on Audio, Speech, and Music Processing (2007)

This paper proposes a new technique for improving the performance of linear prediction analysis by utilizing a refined version of the autocorrelation function. Problems in analyzing voiced speech using linear prediction occur often due to the harmonic structure of the excitation source, which causes the autocorrelation function to be an aliased version of that of the vocal tract impulse response. To estimate the vocal tract characteristics accurately, however, the effect of aliasing must be eliminated. In this paper, we employ homomorphic deconvolution technique in the autocorrelation domain to eliminate the aliasing effect occurred due to periodicity. The resulted autocorrelation function of the vocal tract impulse response is found to produce significant improvement in estimating formant frequencies. The accuracy of formant estimation is verified on synthetic vowels for a wide range of pitch frequencies typical for male and female speakers. The validity of the proposed method is also illustrated by inspecting the spectral envelopes of natural speech spoken by high-pitched female speaker. The synthesis filter obtained by the current method is guaranteed to be stable, which makes the method superior to many of its alternatives.
An Implementer's View of PHIGS
Authors: Salim Abi-ezzi, Albert Bunshaft
Venue: IEEE Computer Graphics and Applications (1986)

The Programmer's Hierarchical Interactive Graphics System (PHIGS) specifies an interface for programming device-independent computer graphics applications. After a brief review of PHIGS concepts, an experimental environment used to study and evaluate the proposed standard is presented. The basic structure and distribution of function in this PHIGS implementation is discussed. We describe the architecture of a device-independent environment designed to realize the performance essential to the adequate functioning of a PHIGS implementation. The results presented emphasize the PHIGS output model. Full utilization of workstation processing capabilities, minimization of host/workstation interaction and efficient data management are key to our implementation.
Mobility management for large private wireless ATM installations
Authors: Alexandros Kaloxylos, Harri Hansén, Lazaros Merakos
Venue: ACM SIGMOBILE Mobile Computing and Communications Review (1999)

New mobility management protocols that aim to support terminal movement, in wireless ATM Customer Premises Networks (CPN) are presented. The functionality of these protocols consists of the procedures for handover (i.e., re-routing of active data connections to a new radio cell) and the procedures for location management (i.e., storing and retrieving the exact location of a mobile terminal). In the considered CPN environment, the ATM switches communicate using the PNNI protocol, the routing functionality of which is used by the mobility management protocols to perform their tasks more efficiently.
Secure XML publishing without information leakage in the presence of data inference
Authors: Xiaochun Yang, Chen Li
Venue: Proceedings of the Thirtieth international conference on Very large data bases - Volume 30 (2004)

Recent applications are seeing an increasing need that publishing XML documents should meet precise security requirements. In this paper, we consider data-publishing applications where the publisher specifies what information is sensitive and should be protected. We show that if a partial document is published carelessly, users can use common knowledge (e.g., "all patients in the same ward have the same disease") to infer more data, which can cause leakage of sensitive information. The goal is to protect such information in the presence of data inference with common knowledge. We consider common knowledge represented as semantic XML constraints. We formulate the process how users can infer data using three types of common XML constraints. Interestingly, no matter what sequences users follow to infer data, there is a unique, maximal document that contains all possible inferred documents. We develop algorithms for finding a partial document of a given XML document without causing information leakage, while allowing publishing as much data as possible. Our experiments on real data sets show that effect of inference on data security, and how the proposed techniques can prevent such leakage from happening.
Thick shells of revolution: Derivation of the dynamic stiffness matrix of continuous elements and application to a tested cylinder
Authors: J. B. Casimir, M. C. Nguyen, I. Tawfiq
Venue: Computers and Structures (2007)

This paper describes a procedure for calculating the dynamic stiffness matrix of tubular shells with free edge boundary conditions. Such an analysis forms the basis for the Continuous Element Method. The method is used to formulate a thick axisymmetric shell element which takes into account rotatory inertia, transverse shear deformation and non-axisymmetric loadings.
A Study on an Efficient Searching Method of Multimedia Contents
Authors: Jung-Tae Kim, Soon-Han Bae, Dong-Wook Lee
Venue: Proceedings of the 5th ACIS International Conference on Software Engineering Research, Management & Applications (2007)

Recently, field of information technique and internet have experienced rapid growth. Nowadays, most people are able to use multimedia data such as movies. Furthermore, as the performance of computer hardware is increasing, the scale of software is increased as well. Especially, the quality of multimedia, such as resolution of (motion) picture and sound can be served in high quality. As computer users are becoming more familiar with multimedia contents, these users seek to search for specific part exactly they wanted from various types of contents. Sometimes users want to link different types of contents to each other. To meet those users' need, we suggest that contents need to be formatted to database by indexing. In this paper, we proposed an efficient method to manage those VLDB (very large database) through the theoretical development and actual test.
Towards efficient context-specific video coding based on gaze-tracking analysis
Authors: D. Agrafiotis, S. J. C. Davies, N. Canagarajah, D. R. Bull
Venue: ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP) (2007)

This article discusses a framework for model-based, context-dependent video coding based on exploitation of characteristics of the human visual system. The system utilizes variable-quality coding based on priority maps which are created using mostly context-dependent rules. The technique is demonstrated through two case studies of specific video context, namely open signed content and football sequences. Eye-tracking analysis is employed for identifying the characteristics of each context, which are subsequently exploited for coding purposes, either directly or through a gaze prediction model. The framework is shown to achieve a considerable improvement in coding efficiency.
Globally decoupled reputations for large distributed networks
Authors: Gayatri Swamynathan, Ben Y. Zhao, Kevin C. Almeroth, Haitao Zheng
Venue: Advances in Multimedia (2007)

Reputation systems help establish social control in peer-to-peer networks. To be truly effective, however, a reputation system should counter attacks that compromise the reliability of user ratings. Existing reputation approaches either average a peer's lifetime ratings or account for rating credibility by weighing each piece of feedback by the reputation of its source. While these systems improve cooperation in a P2P network, they are extremely vulnerable to unfair ratings attacks. In this paper, we recommend that reputation systems decouple a peer's service provider reputation from its service recommender reputation, thereby, making reputations more resistant to tampering. We propose a scalable approach to system-wide decoupled service and feedback reputations and demonstrate the effectiveness of our model against previous nondecoupled reputation approaches. Our results indicate that decoupled approache significantly improves reputation accuracy, resulting in more successful transactions. Furthermore, we demonstrate the effectiveness and scalability of our decoupled approach as compared to PeerTrust, an alternative mechanism proposed for decoupled reputations. Our results are compiled from comprehensive logs collected from Maze, a large file-sharing system with over 1.4 million users supporting searches on 226TB of data.
Identifying BT-like P2P Traffic by the Discreteness of Remote Hosts
Authors: W. Q. Cheng, J. Gong, W. Ding
Venue: Proceedings of the 32nd IEEE Conference on Local Computer Networks (2007)

By analyzing application protocols and traffic, we find that the most striking distinguish between BitTorrent (BT)-like peer-to-peer (P2P) applications' traffic and traditional as well as other P2P (such as Skype) applications' traffic of a single user may be the dissimilarity in the distribution of remote hosts involved. Therefore, we propose a method based on Discreteness of Remote Hosts (RHD) to identify BT-like traffic. In this method, traffic for each user host in a stub network need be monitored at the border of the stub network and classified into flows. At intervals concurrent TCP and UDP flows for a single host should be grouped respectively by what stub network the remote host of each flow belongs to, and then calculate instant RHDs for TCP and UDP flows respectively. For any user host, if the sum of two average RHDs for a period of time exceeds specific threshold, then we can deduce that the host has used BTlike P2P application. The method proposed here is a simple traffic characteristic-based traffic classification method. It is more suitable for identifying protean BT-like P2P application than usual content-based methods such as those based on port numbers or application signatures. Experiments results reveal that our method can effectively recognize BT-like traffic and may be particularly appropriate for use to restrict BT-like traffic during working hours if needed.
Culture-Centered Design: Cultural Factors in Interface Usability and Usability Tests
Authors: Huiyang Li, Xianghong Sun, Kan Zhang
Venue: Proceedings of the Eighth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing - Volume 03 (2007)

As technologies in the field of information and communication quickly developed all over the world, application of a standardized interface posed usability problems for users of multi-culture. In this situation, we should have a new perspective of user-interface design, which is the challenge of designing a culture-centered interface that is more natural. This article first reviews domain psychological research conclusions on cultural differences in cognitive and perception between East Asians and Westerners. Then the recent researches on cultural interfaces design and cultural usability test of Web site, software and digital devices are reviewed. The discussion of cultural issues will provide valuable implication to the digital product designers and researchers on design approaches and usability test methods.
A Scheme for Protecting the Information Leakage Via Portable Devices
Authors: Masaru Takesue
Venue: Proceedings of the The International Conference on Emerging Security Information, Systems, and Technologies (2007)

Information leakage from corporate computer systems is a big social problem in terms of the protection of corporate assets and customers' privacy. Digital assets are usually brought out of companies with the portable devices such as USB memory sticks, PDAs, and laptop PCs. This paper proposes a scheme that protects the information leakage via portable devices so that the access to sensitive files on a storage device attached to a computing device is allowed only when the latter is located inside the company and is connected to the company's network. To detect this, we use the IP addresses of the company and the computing device, but also a challenge-response authentication protocol to prevent such attacks that simulate the company's system to camouflage the computing device's location.
Multiresolution Elastic Medical Image Registration in Standard Intensity Scale
Authors: Ulas Bagci, Li Bai
Venue: Proceedings of the XX Brazilian Symposium on Computer Graphics and Image Processing (2007)

Medical image registration is a difficult problem. Not only a registration algorithm needs to capture both large and small scale image deformations, it also has to deal with global and local image intensity variations. In this paper we describe a new multiresolution elastic image registration method that challenges these difficulties in image registration. To capture large and small scale image deformations, we use both global and local affine transformation algorithms. To address global and local image intensity variations, we apply an image intensity standardization algorithm to correct image intensity variations. This transforms image intensities into a standard intensity scale, which allows highly accurate registration of medical images.
A Method for Solving a Bipartite-Graph Clustering Problem with Sequence Optimization
Authors: Keiu Harada, Takuya Ishioka, Ikuo Suzuki, Masashi Furukawa
Venue: Proceedings of the 7th IEEE International Conference on Computer and Information Technology (2007)

In this paper, we propose the solving method of Bipartite-graph Clustering Problem (BCP) by transforming from BCP into Traveling Salesman Problem (TSP). The analysis of information in web is an important guide to understand how to organize the wisdom of mankind. Especially, to divide from related information into communities of a suitable number is useful to the extraction of valuable information. One of the methods for extracting the community is using bipartite graph. BCP is equal to TSP with some concentrated cities, in the point of classifying the similar vertexes into each cluster. In order to solve TSP by smaller computational cost, we adopt the Local Clustering Organization (LCO) method from many proposed solution for TSP. LCO has been proven to be possible to perform the high-speed computation for large-scale TSP. As the result of some computational experiments, we verified that our proposed method is possible to decide an optimum threshold of cost by observing the distribution.
Graphics Software-from Techniques to Principles
Authors: L. Hatfield
Venue: IEEE Computer Graphics and Applications (1982)

The history of graphics software mirrors that of computing in general: we work out basic techniques; we develop algorithms; we begin to search for standards.
Euclidean Embedding of Co-occurrence Data
Authors: Amir Globerson, Gal Chechik, Fernando Pereira, Naftali Tishby
Venue: The Journal of Machine Learning Research (2007)

Embedding algorithms search for a low dimensional continuous representation of data, but most algorithms only handle objects of a single type for which pairwise distances are specified. This paper describes a method for embedding objects of different types, such as images and text, into a single common Euclidean space, based on their co-occurrence statistics. The joint distributions are modeled as exponentials of Euclidean distances in the low-dimensional embedding space, which links the problem to convex optimization over positive semidefinite matrices. The local structure of the embedding corresponds to the statistical correlations via random walks in the Euclidean space. We quantify the performance of our method on two text data sets, and show that it consistently and significantly outperforms standard methods of statistical correspondence modeling, such as multidimensional scaling, IsoMap and correspondence analysis.
Dynamic Resolution of Memory Access Conflicts
Authors: J. M. Daniel, J. D. Irwin
Venue: IEEE Transactions on Computers (1971)

This note presents a method for designing and implementing a dynamic priority assignment memory-access conflict-resolution circuit for use in multiprocessing systems with K processors. A decision rule which establishes the priority, assignment is given and an example which illustrates the techniques is also discussed.
New framework for automatic white balancing of digital camera images
Authors: Rastislav Lukac
Venue: Signal Processing (2008)

This paper introduces a new framework suitable for automatic white balancing of digital camera images. By utilizing refined color modeling concepts, the proposed framework combines both the global and local spectral characteristics of the captured image to adjust its coloration in a computationally efficient way. The framework allows flexible design of different white balancing solutions that can enhance the acquired color information adaptively, thus providing the user with a number of options to achieve visually pleasing color images.
Rotation Invariant Image Classification Based on MPEG-7 Homogeneous Texture Descriptor
Authors: Lei Zhang, Jun Ma, Xinshun Xu, Bo Yuan
Venue: Proceedings of the Eighth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing - Volume 03 (2007)

Image classification based on texture features plays an important role in content-based image retrieval. A novel method for rotation invariant image classification is proposed based on MPEG-7 Homogeneous Texture Descriptor (HTD). To compute HTD, Gabor transform is first performed by filtering image using a bank of orientation and scale selective band-pass filters called Gabor wavelets. For constructing the feature vector, the mean energy and standard deviation are calculated separately on each filtered and original image. Then the summations of energy in different direction are calculated and the direction with the maximum energy is chosen as the dominant orientation, which is used to shift the feature vector circularly in order to keep rotation invariant. The classification is done by SVM (Support Vector Machine). The method is tested on Brodatz and UIUCTex datasets. The experiments demonstrate the method is effective and efficient for rotation invariant texture classification.
Rule Extraction for Problems with Hybrid Type Attributes
Authors: Ping Guo, Jing Chen, Shengjun Sun
Venue: Proceedings of the Third International Conference on Natural Computation - Volume 01 (2007)

To hurdle the major drawback of neural network, this paper developed researches on rule extraction. For problems with continuous-valued and discrete-valued attributes, the paper present an approach to extract understandable rules. Rules extracted are comprehensible not only for discrete value but also for continuous value. Our experiment results on real-word dataset validate our approach and show that rules extracted by our approach are comprehensible.
Merge Logic for Clustered Multithreaded VLIW Processors
Authors: Manoj Gupta, Fermin Sanchez, Josep Llosa
Venue: Proceedings of the 10th Euromicro Conference on Digital System Design Architectures, Methods and Tools (2007)

Clustered VLIW embedded processors have become widespread due to benefits of simple hardware and low power. Simultaneous MultiThreading (SMT) is a well known technique that uses thread level parallelism at the instruction grain level. However, implementing SMT for VLIW requires complex structures. CSMT (Cluster-level Simultaneous MultiThreading) allows some degree of SMT in clustered VLIW processors with minimal hardware cost and complexity. This paper deals with the hardware required to implement CSMT instruction merge logic on a clustered VLIW processor. The paper presents two implementations of CSMT merge logic and an analysis of both comparing design issues like delay and number of transistors required.