ppxscal/embedding_network huggingface dataset:
High Availability: Design, Techniques and Processes (Harris Kern's Enterprise Computing Institute Series), 1st edition
Authors: Floyd Piedad, Michael W. Hawkins
Venue:  (2008)

Training, systems support, backup and maintenance account for nearly 80% of the total cost of today's enterprise applications -- and much of that money is spent trying to squeeze increased availability out of applications in spite of weak design and management processes. In High Availability: Design, Techniques and Processes, two leading IT experts bring together "best practices" for every people and process-related issue associated with maximizing application availability. The goal: to help enterprises dramatically improve the value of their strategic applications, without spending more money. Using extensive real-world examples and scenarios, the authors cover the entire application lifecycle. Learn how to design systems that will be easier to maintain; ensure that new systems will not increase in cost later due to problems you could have anticipated; and plan long-term availability strategies. Discover how to improve redundancy, increase standardization, simplify backups, and much more. These strategies and techniques are applicable to any IT professional, at any level, in any architecture, from traditional mainframes through client/server to leading-edge n-tier environments.For all IT professionals, including system architects, project managers, administrators, software developers and software engineers.
Development and evaluation of an ergonomic software package for predicting multiple-task human performance and mental workload in human-machine interface design and evaluation
Authors: Changxu Wu, Yili Liu
Venue: Computers and Industrial Engineering (2009)

Predicting human performance and mental workload in multiple task situations at an early stage of system design can save a significant amount of time and cost. However, existing modeling tools either can only predict human performance or require users of tools to learn a new programming language. Queueing Network-Model Human Processor (QN-MHP) is a new cognitive architecture for modeling both human performance and mental workload in multiple tasks. This paper describes the development of a Visual Basic Application in Excel (VBA) software package and an illustrative case study to evaluate its effectiveness. The software package has an easy-to-use user interface for QN-MHP that assists users of the modeling tool to simulate a dual task including definition of the tasks and interfaces by clicking buttons to select options and filling texts in a table, with no need to learn a simulation language. It allows the model user to intuitively observe the information processing state of the model during simulation, and conveniently compare the simulated human performance and mental workload for different designs. The illustrative case study showed that naive users without prior simulation language programming experience can model human performance and mental workload in a complex multitask situation within 3min; and this software package can save 71% of modeling time and reduce 30% of modeling errors. Further developments of the VBA software package of QN-MHP are also discussed on how to make it a comprehensive proactive ergonomic design and analysis tool.
Study on Controlling Process by X-H Method of Reversible Tandem Rolling
Authors: Xianzhang Feng, Zhiqiang Jiang, Haodong Luo, Cai Liu, Junhui Li
Venue: Proceedings of the 2009 Second International Workshop on Knowledge Discovery and Data Mining (2009)

In order to improve the production efficiency of H-Beam and reduce the labor strength of workers, and develop the biggest potential of equipment and possess position in intense market competition. Based on adjustment the roll gap value between the rollers of all rolling mills accurately and quickly by three stands reversible continuous rolling inline, the operating principle of system of roll gap adjusting and the functions were analyzed at first. The subject investigated based on, the least motion time of adjustment electrical motor as main subject, the control mathematical model that match with rolling rules was deduced and plotted by using of the method of X-H during H-Beam rolling. The research achievement provided reference to increase production of H-Beam in engineering.
Tester la conformit&eacute; d'une IHM &agrave; son mod&egrave;le de t&acirc;ches
Authors: Loé Sanou, Patrick Girard, Laurent Guittet, Sybille Caffiau
Venue: Proceedings of the 20th International Conference of the Association Francophone d'Interaction Homme-Machine (2008)

This paper presents an approach verifying the conformity of an interactive application developed with the associated task model. This technique links the HCI to the task model by inserting specific code in the HCI code. With this code, based on a toolkit allowing the registration of user actions on the HCI and their translation into task names, it is possible to produce data that can be confront to the task model of this application.
Resolution trade-off analysis for aperture size and signaling bandwidth of diffraction tomography based on spatial-frequency spectral coverage
Authors: Hua Lee
Venue: International Journal of Imaging Systems and Technology (2009)

The objective of this article is to present the trade-off analysis of resolving capability of diffraction tomography between aperture size and illumination signal bandwidth based on the span of spatial spectral coverage. The analysis is conducted on both the transmission and reflection modes, and can be generalized into various data acquisition configurations. In addition, the analysis provides an important link to other tomographic imaging modalities such as the classical X-ray tomography and synthetic aperture radar systems. &copy; 2009 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 19, 1&ndash;4, 2009
Taximeter verification using imprecise data from GPS
Authors: José Villar, Adolfo Otero, José Otero, Luciano Sánchez
Venue: Engineering Applications of Artificial Intelligence (2009)

Until recently, local governments in Spain were using machines with rolling cylinders for testing and verification of taximeters. However, the tyres condition can lead to errors in the process and the mechanical construction of the test equipment is not compatible with certain vehicles. Thus, a new measurement device should be designed. In our opinion, the verification of a taximeter will not be reliable unless measurements taken on an actual taxi run are used. Global positioning system (GPS) sensors are intuitively well suited for this process, because they provide the position and the speed with independence from those car devices that are under test. Nevertheless, since GPS measurements are inherently imprecise, GPS-based sensors are difficult to homologate. In this paper we will show how these legal problems can be solved. We propose a method for computing an upper bound of the length of the trajectory, taking into account the vagueness of the GPS data. The uncertainty in the GPS data will be modelled by fuzzy techniques. The upper bound will be computed using a multiobjective evolutionary algorithm. The accuracy of the measurements will be improved further by combining it with restrictions based on the dynamic behavior of the vehicles.
A fast geometric rectification of remote sensing imagery based on feature ground control point database
Authors: Jian Yang, Zhongming Zhao
Venue: WSEAS Transactions on Computers (2009)

This paper, on the basis of the traditional design of database for ground control point, tries to founded a fast auto-correction method of satellite remote sensing imagery based on feature ground control point database which brings local feature points as the effective supplement and aims to achieve the automatic matching between feature ground control points and original images that need geometric correction and improve the rectified process utilizing random sample consensus (RANSAC algorithm). In this method, the author realize the auto-extraction of feature ground control points for ensuring speed and precise geometric correction of a high volume of satellite remote sensing images by means of analyzing feature ground control point database algorithm.
Two tetrahedral C1 cubic macro elements
Authors: Peter Alfeld, Tatyana Sorokina
Venue: Journal of Approximation Theory (2009)

We propose two tetrahedral C^1 cubic macro elements that are constructed locally on one tetrahedron without any knowledge of the geometry of neighboring tetrahedra. Among such geometrically unconstrained local polynomial tetrahedral C^1 schemes requiring only first order derivative data, our macro elements have the smallest number of coefficients. The resulting macro element spaces are stable and provide full approximation power. We give explicit formulae that can be used to implement our schemes.
Optimum Histogram Pair Based Image Lossless Data Embedding
Authors: Guorong Xuan, Yun Q. Shi, Peiqi Chai, Xia Cui, Zhicheng Ni, Xuefeng Tong
Venue: Proceedings of the 6th International Workshop on Digital Watermarking (2008)

This paper presents an optimum histogram pair based image lossless data embedding scheme using integer wavelet transform and adaptive histogram modification. This new scheme is characterized by (1) the selection of best threshold T, which leads to the highest PSNR of the marked image for a given payload, (2) the adaptive histogram modification, which aims at avoiding underflow and/or overflow, is carried out only when it is necessary, and treats the left side and the right side of histogram individually, seeking a minimum amount of histogram modification, and (3) the selection of most suitable embedding region, which attempts to further improve the PSNR of the marked image in particular when the payload is low. Consequently, it can achieve the highest visual quality of marked image for a given payload as compared with the prior arts of image lossless data hiding. The experimental results have been presented to confirm the claimed superior performance.
Interactive query refinement
Authors: Chaitanya Mishra, Nick Koudas
Venue: Proceedings of the 12th International Conference on Extending Database Technology: Advances in Database Technology (2009)

We investigate the problem of refining SQL queries to satisfy cardinality constraints on the query result. This has applications to the many/few answers problems often faced by database users. We formalize the problem of query refinement and propose a framework to support it in a database system. We introduce an interactive model of refinement that incorporates user feedback to best capture user preferences. Our techniques are designed to handle queries having range and equality predicates on numerical and categorical attributes. We present an experimental evaluation of our framework implemented in an open source data manager and demonstrate the feasibility and practical utility of our approach.
What's next?: emergent storytelling from video collection
Authors: Edward Yu-Te Shen, Henry Lieberman, Glorianna Davenport
Venue: Proceedings of the 27th international conference on Human factors in computing systems (2009)

In the world of visual storytelling, narrative development relies on a particular temporal ordering of shots and sequences and scenes. Rarely is this ordering cast in stone. Rather, the particular ordering of a story reflects a myriad of interdependent decisions about the interplay of structure, narrative arc and character development. For storytellers, particularly those developing their narratives from large documentary archives, it would be helpful to have a visualization system partnered with them to present suggestions for the most compelling story path. We present Storied Navigation, a video editing system that helps authors compose a sequence of scenes that tell a story, by selecting from a corpus of annotated clips. The clips are annotated in unrestricted natural language. Authors can also type a story in unrestricted English, and the system finds possibilities for clips that best match high-level elements of the story. Beyond simple keyword matching, these elements can include the characters, emotions, themes, and story structure. Authors can also interactively replace existing scenes or predict the next scene to continue a story, based on these characteristics. Storied Navigation gives the author the feel of brainstorming about the story rather than simply editing the media.
Uniting the Prolog Community
Authors: Tom Schrijvers, Bart Demoen
Venue: Proceedings of the 24th International Conference on Logic Programming (2008)

In his article A Wake-Up Call for the Logic Programming Community, published in the December 2007 issue of the ALP Newsletter, the first author raised concerns about the viability of the Prolog programming language in the near future. The article had a pessimistic undertone, but expressed the hope that the current evolution can be reversed by uniting the Prolog community. Now, almost a year later, it is time for more optimistic news and we are happy that the ALP --through the ICLP 2008 program chairs--has given us the opportunity to re-iterate the arguments, present the recent positive developments and involve the whole community.
Characterising observed patterns of suspended particulate matter and relationships with oceanographic and meteorological variables: Studies in Liverpool Bay
Authors: V. Krivtsov, M. J. Howarth, S. E. Jones
Venue: Environmental Modelling Software (2009)

Suspended particulate matter (SPM) in the marine environment is represented by a mixture of organic and inorganic particles, and is characterised by complex structural and dynamical transformations. This paper describes our SPM studies in Liverpool Bay (UK), and identifies (using Stepwise Regression Modelling) the meteorological and oceanographic variables especially important for the characterisation of the SPM at this site. By analysing data sets from 9 cruises conducted between September 2004 and February 2006, it was found that the highest number of significant relationships (25) was shown by Salinity and Temperature. It is therefore evident, that the most important factors influencing SPM-related variables are related to the inshore-offshore gradient. This influence has also been reflected in the importance of such variables as Density (10) relationships and Depth (9). Another very important factor appears to relate to wind waves, with the cubed amplitude of orbital velocity at the bed demonstrating 23 significant relationships, TKE due to wind showing 13 relationships, dominant wave direction 11, and average wave period 9. These figures appear to exceed the numbers of significant relationships shown by the variables related to tides (e.g. tidal level 15, tide direction 9, TKE at the surface due to the tidal current 4). Hence waves appear to matter more than tides. The Matlab function used for stepwise regression modelling is particularly suitable for the analysis of large amounts of repetitive information (e.g. for processing data from a number of cruises where the same or similar protocol was used for data collection and storage), with the results being stored in Excel files. This facilitates the analysis and enables an easy exchange of the results (i.e. due to the widespread use of Microsoft Excel). The Matlab function is provided online as a supplementary appendix.
Hierarchical Local Maps for Robust Approximate Nearest Neighbor Computation
Authors: Pratyush Bhatt, Anoop M. Namboodiri
Venue: Proceedings of the 2009 Seventh International Conference on Advances in Pattern Recognition (2009)

In this paper, we propose a novel method for fast nearest neighbors retrieval in non-Euclidean and non-metric spaces. We organize the data into a hierarchical fashion that preserves the local similarity structure. A method to find the approximate nearest neighbor of a query is proposed, that drastically reduces the total number of explicit distance measures that need to be computed. The representation overcomes the restrictive assumptions in traditional manifold mappings, while enabling fast nearest neighbor's search. Experimental results on the Unipen and CASIA Iris datasets clearly demonstrates the advantages of the approach and improvements over state of the art algorithms. The algorithm can work in batch mode as well as in sequential mode and is highly scalable.
Mapping and Synchronizing Streaming Applications on Cell Processors
Authors: Maik Nijhuis, Herbert Bos, Henri E. Bal, Cédric Augonnet
Venue: Proceedings of the 4th International Conference on High Performance Embedded Architectures and Compilers (2008)

Developing streaming applications on heterogenous multi-processor architectures like the Cell is difficult. Currently, application developers need to know about hardware details to deal with issues like scheduling, memory management and communication/synchronization. Worse, with multiple alternatives for communication available, developers spend significant time picking the most appropriate one. A poor choice often results in bad performance. With Cell-Space, we shield users from hardware details without compromising performance. Its runtime is based on an evaluation of the different communication primitives. In Cell-Space, developers specify a streaming application as a data flow graph of interacting components. Both task- and data-parallelism are easily expressed and advanced features such as dynamic reconfiguration are fully supported. Beneath a simple interface we include a slew of optimizations not present in other Cell run time environments. We demonstrate the impact of these optimizations and show that Cell-Space applications can efficiently exploit the resources offered by the Cell.
Error analysis in artificial neural networks: the imbalanced distribution case
Authors: R. Alejo, J. M. Sotoca, M. G. De La Rosa
Venue: Proceedings of the 8th conference on Simulation, modelling and optimization (2008)

A comparative empirical study is presented using different cost functions designed to reduce the imbalanced class influence in the training data. This work is focused in the learning and classification process by using perceptron multilayer and radial basis functions neural networks. This artificial neural networks were trained by means of the back-propagation algorithm in batch mode using two class databases.
Mesh parameterization: theory and practice
Authors: Kai Hormann, Konrad Polthier, Alia Sheffer
Venue: ACM SIGGRAPH ASIA 2008 courses (2008)

Mesh parameterization is a powerful geometry processing tool with numerous computer graphics applications, from texture mapping to animation transfer. This course outlines its mathematical foundations, describes recent methods for parameterizing meshes over various domains, discusses emerging tools like global parameterization and inter-surface mapping, and demonstrates a variety of parameterization applications.
Efficient hardware architecture of 2D-scan-based wavelet watermarking for image and video
Authors: Sourour Karmani, Ridha Djemal, Rached Tourki
Venue: Computer Standards Interfaces (2009)

This paper describes an efficient hardware architecture of 2D-Scan-based-Wavelet watermarking for image and video. The potential application for this architecture includes broadcast monitoring of video sequences for High Definition Television (HDTV) and DVD protection and access control. The proposed 2D design allows even distribution of the processing load onto a set of filters, with each set performing the calculation for one dimension according to the scan-based process. The video protection is achieved by the insertion of watermarks bank within the middle frequency of wavelet coefficients related to video frames by their selective quantization. The 2-D DWT is applied for both video stream and watermark in order to make the watermarking scheme robust and perceptually invisible. The proposed architecture has a very simple control part, since the data are operated in a row-column-slice fashion. This organization reduces the requirement of on-chip memory. In addition, the control unit selects which coefficient to pass to the low-pass and high-pass filters. The on-chip memory will be small as compared to the input size since it depends solely on the filter sizes. Due to the pipelining, all filters are utilized for 100% of the time except during the start-up and wind-down times. The major contribution of this research is towards the selection of appropriate real time watermarking scheme and performing a trade-off between the algorithmic aspects of our proposed watermarking scheme and the hardware implementation technique. The hardware architecture is designed, as a watermarking based IP core with the Avalon interface related to NIOS embedded processor, and tested in order to evaluate the performance of our proposed watermarking algorithm. This architecture has been implemented on the Altera Stratix-II Field Programmable Gate Array (FPGA) prototyping board. Experimental results are presented to demonstrate the capability of the proposed watermarking system for real time applications and its robustness against malicious attacks.
Analysis of challenges for on-chip optical interconnects
Authors: Rajeev K. Dokania, Alyssa B. Apsel
Venue: Proceedings of the 19th ACM Great Lakes symposium on VLSI (2009)

Optical interconnects are touted as the solution to the performance bottleneck of future interconnects in scaled technology nodes. Though significant strides have been made in realizing silicon photonic devices that can give high performance in controlled lab environments, there still exist technical challenges preventing dense integration and reliability in widely varying conditions. This paper examines such problems while suggesting possible solution space and proposing some alternatives. We also calculate the actual power advantage that optical links will have compared to an electrical link while considering the thermal stabilization and other technological issues. We show that the ~4X power advantage that ideal on-chip global optical interconnects have been projected to have is reduced to null when the power required for thermal regulation of critical optical components alone are added into the calculations. We also discuss latency, spatial bandwidth, polarization and a host of other technological issues and reassess the benefits of dense on-chip optical interconnects for dense global routing.
Embedding standard distributed object-oriented middlewares in wireless sensor networks
Authors: F. Moya, D. Villa, F. J. Villanueva, J. Barba, F. Rincón, J. C. López
Venue: Wireless Communications Mobile Computing (2009)

This paper provides an analysis of the design space available to middleware developers in the context of wireless sensor networks (WSN). We identify the weaknesses of current communication abstraction layers and propose alternative implementation techniques that preserve most of the useful features but minimize the implementation cost in resource constrained wireless sensor nodes. Our proposal includes a whole WSN development framework based on standard distributed objects and a set of specific services designed to support highly dynamic and scalable WSN applications. Copyright &copy; 2007 John Wiley & Sons, Ltd.