ppxscal/embedding_network huggingface dataset:
VIRTUAL BUSINESS
Authors: Julian C. Bleecker
Venue: ACM SIGCHI Bulletin (1993)

The Seattleites who dug deep on their pockets to try out Virtual reality at the Video Tech Pavilion during Bumbershoot '92 walked away reeling from the imaginative, futuristic possibilities of the technology. In fact, the experience of dipping one senses into a three-dimensional computer graphics world had already found an appeal within the radical-chic cyberculture led by '60s icon Timothy Leary. Well-documented by the magazine Mondo 2000, this movement has added more than its share of hype to the technology. 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
An agent-based inter-application information flow control model
Authors: Shih-Chien Chou
Venue: Journal of Systems and Software (2005)

Access control in an application prevents information leakage in the application. The prevention can be achieved by controlling information flows. Many information flow control models have been developed. Since applications may cooperate, controlling information flows among cooperating applications is necessary. Our survey reveals that no existing model offers the control. We thus developed a model to control information flows among cooperating object-oriented applications. In designing the model, we require that cooperating applications communicate with one another through JAVA RMI (remote method invocation). Our model is based on the following considerations: when a RMI occurs, the security level of an argument should not be higher than that of the parameter receiving the argument's value, and the security level of a variable receiving a method return value should not be lower than that of the method return value. The model is agent-based. Moreover, different applications can embed different information flow control models. With this, the proposed model coordinates heterogeneous information flow control models. This paper presents our inter-application information flow control model.
Large-scale simulations of cellular signaling processes
Authors: John H. Miller, Fang Zheng
Venue: Parallel Computing (2004)

A database of rate constants and related quantities has been assembled by [Nature Biotech. 20 (2002) 370] for intracellular signaling downstream of the epidermal growth factor receptor (EGFR). This information was combined with data on metalloprotease activation [Proc. Natl. Acad. Sci. USA 96 (1999) 6235] to build a model of autocrine signal transduction by cancer cells exposed to ionizing radiation. The model predicts prompt activation of mitogen-activated-protein-kinase (MAPK) pathways in response to a radiation-induced shift in the Ras-GDP ↔ RasGTP equilibrium toward more RasGTP. A secondary MAPK activation is predicted due to metalloprotease activity that releases transforming growth factor α (TGFα), an autocrine ligand of EGFR. Model predictions were compared to data by [Mol. Biol. Cell 10 (1999) 2493] on extracellular regulated kinase (ERK) activation following a 2 Gy exposure of carcinoma cells in vitro. Good agreement was obtained with the magnitude of prompt and secondary ERK activation; however, the experimental secondary response was delayed relative to the prompt peak more than predicted by our model.
Dynamic run-time architecture techniques for enabling continuous optimization
Authors: Tipp Moseley, Alex Shye, Vijay Janapa Reddi, Matthew Iyer, Dan Fay, David Hodgdon, Joshua L. Kihm, Alex Settle, Dirk Grunwald, Daniel A. Connors
Venue: Proceedings of the 2nd conference on Computing frontiers (2005)

Future computer systems will integrate tens of multithreaded processor cores on a single chip die, resulting in hundreds of concurrent program threads sharing system resources. These designs will be the cornerstone of improving throughput in high-performance computing and server environments. However, to date, appropriate systems software (operating system, run-time system, and compiler) technologies for these emerging machines have not been adequately explored. Future processors will require sophisticated hardware monitoring units to continuously feed back resource utilization information to allow the operating system to make optimal thread co-scheduling decisions and also to software that continuously optimizes the program itselfNevertheless, in order to continually and automatically adapt systems resources to program behaviors and application needs, specific run-time information must be collected to adequately enable dynamic code optimization and operating system scheduling. Generally, run-time optimization is limited by the time required to collect profiles, the time required to perform optimization, and the inherent benefits of any optimization or decisions. Initial techniques for effectively utilizing run-time information for dynamic optimization and informed thread scheduling in future multithreaded architectures are presented
Design and Implementation of Configurable W-CDMA Rake Receiver Architectures on FPGA
Authors: Mukesh Chugh, Dinesh Bhatia, Poras T. Balsara
Venue: Proceedings of the 19th IEEE International Parallel and Distributed Processing Symposium (IPDPS'05) - Workshop 3 - Volume 04 (2005)

W-CDMA offers variable spreading factor and multiple codes per user to enable features like high data rates and multiple services for the same connection. To do so, rake receiver architecture for W-CDMA should be configurable such that hardware is utilized optimally at varying requirements. Additionally, architecture for downlink receiver should consume as less power as possible. In this paper, four different architectures for rake receiver are designed and implemented on FPGA. They are compared for area, frequency and power requirements. We propose a new 'Time Multiplexed Parallel Rake' architecture which achieves this objective by two ways. First, it exploits parallelism by processing four chip samples at a time and second, it shares resources for multi code operation by despreading the input samples sequentially in time for each code. The algorithmic correctness of various architectures was first checked by developing a MATLAB model using Simulink blocksets libraries and HDL Co-simulation using Xilinx System Generator. The architectures were implemented on Xilinx Virtex II FPGA family.
Management of information technology: the study on strategy, planning and policies
Authors: Amirrudin Kamsin
Venue: Proceedings of the 2004 international symposium on Information and communication technologies (2004)

In recent years, Information Technology (IT) has been changing at a breathtaking pace. Although this rapid IT change has created opportunities, studies have shown it is challenging those responsible for it around the world (1). IT projects are notorious for budget overruns and delays, and rapid IT change can exacerbate these problems.Rapidly changing IT is enabling today's huge growth in electronic commerce and Internet business. IT will continue to change with alacrity. One study estimated the rate of IT change as 20 to 30 percent per year and accelerating. Industry observers have further claimed that this change is challenging today's IT management (2).
Business process redesign for effective e-commerce
Authors: M. H. Jansen-Vullers, M. Netjes, H. A. Reijers
Venue: Proceedings of the 6th international conference on Electronic commerce (2004)

Many companies have found out the hard way that successful e-commerce requires more than a flashy web presence. Existing business processes must be seamlessly integrated with the new, electronic form of interaction with suppliers and customers. Despite this insight, little research has focused on the transformation of doing business to achieve the presumed benefits of e-commerce. This paper elaborates on both qualitative and quantitative support for redesigning business processes in the context of e-commerce. First, we give directions on how processes may be reengineered with this aim, particularly within the service industry. The presented views are based on existing research into Business Process Reengineering (BPR) best practices and applied in two case studies: one broad and qualitative case study to show the applicability of the best practices, and one small quantitative case study to show the benefits in terms of lead time reduction due to the application of best practices.
Middleware for real-time distributed simulations: Research Articles
Authors: Thom McLean_aff1n2, Richard Fujimoto, Brad Fitzgibbons
Venue: Concurrency and Computation: Practice Experience (2004)

Distributed simulation applications often rely on middleware to provide services to support their execution over distributed computing environments. Such middleware spans many levels, ranging from low-level support for data transmission through object request brokers to higher level, simulation specific functionality such as time management. We discuss design alternatives for realizing such middleware for hard real-time distributed simulations such as hardware-in-the-loop applications. We present the results from tests of a prototype implementation of real-time Run-Time Infrastructure middleware. Its performance is compared with a non-real-time implementation. The context for this work is the High Level Architecture standard that has been defined by the U.S. Department of Defense. Copyright &copy; 2004 John Wiley & Sons, Ltd.
A novel scenario-based information security management exercise
Authors: Michael R. Grimaila
Venue: Proceedings of the 1st annual conference on Information security curriculum development (2004)

In an environment of continually growing security threats, it is essential to raise the information security (INFOSEC) awareness and capabilities of ALL students entering the workforce. When considering INFOSEC education in the academic community, one often overlooked group is business students. However, the recognition and mitigation of information security risk is not only vital to the well being and survival of businesses, but also to our national security which is heavily dependant upon critical infrastructure industries located in the private sector. In this article, I discuss the experiences gained over a three year period in the development and implementation of a scenario-based, information security management exercise which is the capstone project in a graduate business information security course at Texas A&M University. The objective of the exercise is to give students hands on experience in the planning, analysis, design, implementation, and maintenance of an organization's information security program.
Symmetric structure in logic programming
Authors: Jin-Zhao Wu, Harald Fecher
Venue: Journal of Computer Science and Technology (2004)

It is argued that some symmetric structure in logic programs could be taken into account when implementing semantics in logic programming. This may enhance the declarative ability or expressive power of the semantics. The work presented here may be seen as representative examples along this line. The focus is on the derivation of negative information and some other classic semantic issues. We first define a permutation group associated with a given logic program. Since usually the canonical models used to reflect the common sense or intended meaning are minimal or completed models of the program, we expose the relationships between minimal models and completed models of the original program and its so-called G-reduced form newly-derived via the permutation group defined. By means of this G-reduced form, we introduce a rule to assume negative information termed G-CWA, which is actually a generalization of the GCWA. We also develop the notions of G-definite, G-hierarchical and G-stratified logic programs, which are more general than definite, hierarchical and stratified programs, and extend some well-known declarative and procedural semantics to them, respectively.
A Process-Complete Automatic Acceptance Testing Framework
Authors: David Talby, Ori Nakar, Noam Shmueli, Eli Margolin, Arie Keren
Venue: Proceedings of the IEEE International Conference on Software - Science, Technology & Engineering (2005)

We present a new automated software acceptance tests framework. The framework is novel in supporting the entire lifecycle and all QA activities, including test maintenance over multiple versions, interaction with programmers and business analysts, traceability to specifications, multi-user test cases and more. This enables a significant increate in QA productivity and product quality. We compare our framework to other available tools, products and frameworks, and present several patterns and anti-patterns for implementing a successful automated acceptance testing solution.
Toward subtle intimate interfaces for mobile devices using an EMG controller
Authors: Enrico Costanza, Samuel A. Inverso, Rebecca Allen
Venue: Proceedings of the SIGCHI conference on Human factors in computing systems (2005)

Using a mobile device in a social context should not cause embarrassment and disruption to the immediate environment. Interaction with mobile and wearable devices needs to be subtle, discreet and unobtrusive. Therefore, we promote the idea of "intimate interfaces": discrete interfaces that allow control of mobile devices through subtle gestures in order to gain social acceptance. To achieve this goal, we present an electromyogram (EMG) based wearable input device which recognizes isometric muscular activity: activity related to very subtle or no movement at all. In the online experiment reported, the EMG device, worn on an armband around the bicep, was able to reliably recognize a motionless gesture without calibration or training across users with different muscle volumes. Hence, EMG-based input devices can provide an effective solution for designing mobile interfaces that are subtle and intimate, and therefore socially acceptable.
Conducting empirical software engineering research in Nigeria: the posing problems
Authors: Akinola S. Olalekan
Venue: Proceedings of the 27th international conference on Software engineering (2005)

Empirical Software engineering research has advanced in many parts of the world especially the western nations, but little has been contributed in this research domain by the developing nations such as Nigeria, the well-acclaimed 'Giant of Africa'. The fast growing software industry in the country suggests that we need to incorporate solid software engineering studies into the various software process activities of the stakeholders in the industry, if at all quality software products must be turned out into the ever-competing global market. Recent survey of the Nigeria software industry shows that the industry is just coming into limelight, and that the industry is beset with 'software process compromise'. This short article takes a cursory look into the state of software engineering research in Nigeria with particular reference to the nature of the nation's software industry and the student/academic environment as well as their posing problems. The article concludes with some cogent recommendations.
Sams Teach Yourself MySQL in 10 Minutes
Authors: Ben Forta
Venue:  (2005)

MySQL is one of the most popular database management systems available, powering everything from Internet powerhouses to individual corporate databases to simple end-user applications, and everything in between. And this book will teach you all you need to know to be immediately productive with MySQL. By working through 30 highly focused hands-on lessons, your MySQL Crash Course will be both easier and more effective than you'd have thought possible. Learn how to: Retrieve and sort data Filter data using comparisons, regular expressions, full text search, and much more Join relational data Create and alter tables Insert, update, and delete data Leverage the power of stored procedures and triggers Use views and Cursors Manage transactional processing Create user accounts and manage security via access controlBen Forta is Macromedia's Senior Technical Evangelist, and has almost 20 years of experience in the computer industry in product development, support, training, and product marketing. Ben is the author of the best-selling Sams Teach Yourself SQL in 10 Minutes (now in its third edition, and translated into over a dozen languages), ColdFusion Web Application Construction Kit, and Advanced ColdFusion Development (both published by Que Publishing), Sams Teach Yourself Regular Expressions in 10 Minutes, as well as books on SQL, Flash, JSP, HomeSite, WAP, Windows 2000, and other subjects.
Virtual investigation of pulmonary airways in volumetric computed tomography: Research Articles
Authors: Diane Perchet, Catalin I. Fetita, Laurence Vial, Françoise Prêteux, George Caillibotte, Gabriela Sbiêrlea-Apiou, Marc Thiriet
Venue: Computer Animation and Virtual Worlds (2004)

This paper addresses the issue of non-invasive investigation and functional assessment of pulmonary airways reconstructed from multi detector computed tomography clinical acquisitions. Such an analysis combines accurate 3D meshing of the inner bronchial wall surface and navigation and interactivity tools based on a robust central axis representation. A reliable endoluminal investigation of airways via virtual bronchoscopy is possible regardless of their anatomical&#x002F;pathological specificity (small caliber bronchi, severe stenoses, &hellip;). Computational fluid dynamics simulations on real airway geometries allow to assess functional modifications induced by physiopathological changes. Copyright &copy; 2004 John Wiley & Sons, Ltd.
Exact Minimum Density of Codes Identifying Vertices in the Square Grid
Authors: Yael Ben-Haim, Simon Litsyn
Venue: SIAM Journal on Discrete Mathematics (2005)

An identifying code C is a subset of the vertices of the square grid ${\mathbb Z}^2$ with the property that for each element v of ${\mathbb Z}^2$, the collection of elements from C at a distance of at most one from v is nonempty and distinct from the collection of any other vertex. We prove that the minimum density of C within ${\mathbb Z}^2$ is $\frac{7}{20}$.
OpenSMS
Authors: Stephen Cranage
Venue: Proceedings of the 22nd IEEE / 13th NASA Goddard Conference on Mass Storage Systems and Technologies (2005)

Systems Managed Storage is a proven concept in traditional mainframe computing. Client-Server operating systems have traditionally lacked the tape I/O subsystem, file system intelligence, and data classification policies required to implement the storage management services that are necessary attributes of a scalable data processing environment. OpenSMS is an Open-source framework that addresses these deficiencies.
Automated bilateral bargaining about multiple attributes in a one-to-many setting
Authors: E. H. Gerding, D. J. A. Somefun, J. A. La Poutré
Venue: Proceedings of the 6th international conference on Electronic commerce (2004)

Negotiations are an important way of reaching agreements between selfish autonomous agents. In this paper we focus on one-to-many bargaining within the context of agent-mediated electronic commerce. We consider an approach where a seller agent negotiates over multiple interdependent attributes with many buyer agents in a bilateral fashion. In this setting, "fairness," which corresponds to the notion of envy-freeness in auctions, may be an important business constraint. For the case of virtually unlimited supply (such as information goods), we present a number of one-to-many bargaining strategies for the seller agent, which take into account the fairness constraint, and consider multiple attributes simultaneously. We compare the performance of the bargaining strategies using an evolutionary simulation, especially for the case of impatient buyers. Several of the developed strategies are able to extract almost all the surplus; they utilize the fact that the setting is one-to-many, even though bargaining is bilateral.
Containment of aggregate queries
Authors: Sara Cohen
Venue: ACM SIGMOD Record (2005)

It is now common for databases to contain many gigabytes, or even many terabytes, of data. Scientific experiments in areas such as high energy physics produce data sets of enormous size, while in the business sector the emergence of decision-support systems and data warehouses has led organizations to build up gigantic collections of data. Aggregate queries allow one to retrieve concise information from such a database, since they can cover many data items while returning a small result. OLAP queries, used extensively in data warehousing, are based almost entirely on aggregation [4, 16]. Aggregate queries have also been studied in a variety of settings beyond relational databases, such as mobile computing [1], global information systems [21], stream data analysis [12], sensor networks [22] and constraint databases [2].
Optimization of waveforms for UWB circular and disk antenna arrays
Authors: Yongfu Huang, Guangguo Bi, Xiangning Fan
Venue: Signal Processing (2005)

The basic pulse waveform is an important factor that affects the angular resolution of UltraWideBand (UWB) antenna array. The optimization of these basic pulse waveform for circular and disk array is considered; the optimization problem can be simplified and translated into a simple form, which can be solved effectively. Several optimized waveforms are given, and the main lobes of energy pattern of these optimized waveforms are much narrower than those of corresponding Gaussian waveforms. Numerical results show that optimized waveforms achieve considerable improvement in angular resolution.
Driving and Monitoring Provisional Trust Negotiation with Metapolicies
Authors: Piero Bonatti, Daniel Olmedilla
Venue: Proceedings of the Sixth IEEE International Workshop on Policies for Distributed Systems and Networks (2005)

We introduce the provisional trust negotiation framework PROTUNE, for combining distributed trust management policies with provisional-style business rules and access-control related actions. The framework features a powerful declarative metalanguage for driving some critical negotiation decisions, and integrity constraints for monitoring negotiations and credential disclosure.
Adaptive sampling of intersectable models exploiting image and object-space coherence
Authors: Anders Adamson, Marc Alexa, Andrew Nealen
Venue: Proceedings of the 2005 symposium on Interactive 3D graphics and games (2005)

We present a sampling strategy and rendering framework for intersectable models, whose surface is implicitly defined by a black box intersection test that provides the location and normal of the closest intersection of a ray with the surface. To speed up image generation despite potentially slow intersection tests, our method exploits spatial coherence by adjusting the sampling resolution in image space to the surface variation in object space. The result is a set of small, view-dependent bilinear surface approximations, which are rendered as quads using conventional graphics hardware. The advantage of this temporary rendering representation is two-fold: First, rendering is performed on the GPU, leaving CPU time for ray intersection computation. As the number of primitives is typically small, complex per vertex or per fragment programs can be used to achieve a variety of rendering effects. Second, bilinear surface approximations are derived from the geometry and can be reused in other views. Here, graphics hardware is exploited to determine the subset of image space in need of re-sampling. We demonstrate our system by ray casting an implicit surface defined from point samples, for which current ray-surface intersection computations are usually too slow to generate images at interactive rates.