ppxscal/embedding_network huggingface dataset:
Throughput and Value Maximization in Wireless Packet Scheduling under Energy and Time Constraints
Authors: Fan Zhang, Samuel T. Chanson
Venue: Proceedings of the 24th IEEE International Real-Time Systems Symposium (2003)

Energy-efficient data transmission is an important issuefor mobile communication devices. In this paper, we studythroughput and value-based packet scheduling over a wirelesslink under time and energy constraints. A mobile nodeis required to deliver multiple data streams to multiple receivers.These data streams may have different importanceand incur different energy costs. In this research, point-to-pointwireless data transmission is studied. The objectiveis to develop schemes that selectively transmit data streamsat certain power levels so that the data throughput or thevalue of data delivery is maximized without violating theenergy and time constraints. Exploiting the special propertiesof the throughput maximization problem, we proposean iterative algorithm that yields the optimal transmissionschedule. The value maximization problem is formulated asa convex optimization problem and the optimal results canbe obtained by solving the Kuhn-Tucker conditions. Whentime and transmission power are allocated at discrete slotsand levels, respectively, a dynamic programming approachis proposed to find the optimal value.
From the Editors
Authors: Wendy A. Kellogg
Venue: Queue (2003)

The two killer apps that have best defined the Internet Age have been e-mail and the Web. Now we have a third: IM (instant messaging). Note that two of the three are entirely focused on person-to-person communication—no great surprise since work demands that we find increasingly efficient and effective means to communicate with colleagues, customers, and suppliers. And then out in that big world beyond day-to-day commerce are all those other people we really want to be able to connect directly with in some convenient yet meaningful way. For millions of computer and wireless phone users, IM has become a preferred means for doing just that.
Usage control: a unified framework for next generation access control
Authors: Jaehong Park
Venue:  (2003)

In this dissertation I develop the concept of Usage Control (UCON) that encompasses traditional access control, trust management, and digital rights management and goes beyond them in its definition and scope. While usage control concepts have been mentioned off and on in the security literature for some time, there has been no clear definition nor systematic treatment. By unifying these diverse disciplines in a single framework, UCON offers a promising approach for the next generation of access control. Traditional access control has focused on a closed system where all users are known and primarily utilizes a server-side reference monitor within the system. Trust management has been introduced to cover authorization for strangers in an open environment such as the Internet. Digital rights management has mainly dealt with client-side control of digital information usage focusing on intellectual property rights protection. Each of these areas is motivated by its own specific target problem. Innovations in information technology and business models are creating new security and privacy issues which require elements of all three areas. To deal with these in a systematic unified manner I propose the new concept of usage control or UCON.By including obligations, conditions, ongoing controls, and mutability as well as authorizations, and by relaxing closed system limits, usage control lays the foundation for the next generation access control that is required for today's highly distributed and network-connected digital environment. UCON enables finer-grained control over usage of digital resources than that of traditional access control policies and models; for example, print once as opposed to unlimited printing. Unlike traditional access control or trust management, it covers both a centrally controllable environment and one where central control authority is not available. In this dissertation, I develop a unified framework for usage control mainly focusing on models and architectures. A family of ABC models is developed as a core model for usage control. ABC models integrate obligations, conditions as well as authorizations for usage decision making. They also cover continuity and mutability issues which have not been discussed clearly nor comprehensively in previous studies. By covering continuity and mutability properties, ABC provides finer and richer control capabilities. I further develop security architectures for usage control that utilize a client-side reference monitor (CRM) which is an important concept that enables client-side usage control. As part of usage control applications, UCON management and originator control policies in UCON are discussed based on UCON models and architectures. I also present some potential approaches that can provide valuable directions for future extensions.
Multi-relational data mining: an introduction
Authors: Sašo Džeroski
Venue: ACM SIGKDD Explorations Newsletter (2003)

Data mining algorithms look for patterns in data. While most existing data mining approaches look for patterns in a single data table, multi-relational data mining (MRDM) approaches look for patterns that involve multiple tables (relations) from a relational database. In recent years, the most common types of patterns and approaches considered in data mining have been extended to the multi-relational case and MRDM now encompasses multi-relational (MR) association rule discovery, MR decision trees and MR distance-based methods, among others. MRDM approaches have been successfully applied to a number of problems in a variety of areas, most notably in the area of bioinformatics. This article provides a brief introduction to MRDM, while the remainder of this special issue treats in detail advanced research topics at the frontiers of MRDM.
The internationalization efforts of small internet retailers
Authors: Anand Ramchand, Shan-Ling Pan
Venue: Managing IT in government business & communities (2003)

For the Internet retailers that have managed to dominate through the dot.com fallout, the next step for many is to leverage the technology to expand their operations to a regional or global customer base. However, the internationalization of e-tail differs significantly from traditional retail because of the compounding effect of the Internet, and empirical studies are deficient in the field. This chapter studies the internationalization efforts of three small Internet retail enterprises, highlighting the issues they faced in expanding their operations to service an international customer base. The study reveals their insights and experiences in terms of access to foreign markets, infrastructure considerations, and localization strategies. Through an understanding of these issues, it is hoped that further research will shed light into the intricate relationship between internationalization and Internet retail and the factors that influence it.
Application Modeling for the Semantic Web
Authors: Fernanda Lima, Daniel Schwabe
Venue: Proceedings of the First Conference on Latin American Web Congress (2003)

In this article we present a method for the design and implementation of Web Applications for the Semantic Web. Based on the "Object Oriented Hypermedia Design Method" approach, we used ontology concepts to define an application conceptual model, extending the expressive power of the original method. The navigational model definitions use a query language capable of querying both schema and instances, enabling the specification of flexible access structures. Additionally, we propose the use of faceted access structures to improve the selection of navigational objects organized by multiple criteria. Finally, we present an implementation architecture that allows the direct use of the application specifications when deriving a final application implementation.
The IBM-McGill project on software process
Authors: Nazim H. Madhavji, Kamel Toubache, Ed Lynch
Venue: Proceedings of the 1991 conference of the Centre for Advanced Studies on Collaborative research (1991)

Historically, the process used to develop software has played an important role in the field of software engineering. A number of software lifecycle models have been developed in the last three decades. These models, while helpful in giving general guidance to software developers, do not expose the myriad details that are critical in any large, evolving software development project. Recent developments, however, have unfolded many hidden aspects of the software process giving rise to a new discipline which we call software process engineering. This paper depicts the software process in the context of software environments, examines recent developments in the process field, proposes a set of actions which a software development team might undertake to improve their process maturity, and describes the IBM-McGill project on software process.
New Technique to Build Probabilistic Roadmap Methods
Authors: Antonio Benitez, Daniel Vallejo, Guillermo de los Santos, Enrique Medrano
Venue: Proceedings of the 14th International Conference on Electronics, Communications and Computers (2004)

In this work a new alternative is proposed to improvethe quality of the roadmap obtained by ProbabilisticRoadmap Methods. This alternative is based on theuse of some geometric features of the robot and the obstaclesto move and rotate the robot in some way. We believethat narrow corridor problems can be solved taking advantageof the robot form and its geometric features. Themain idea is to obtain information that allows the algorithmto guide the search of useful configurations, and toreduce the account of non-valid configurations to be calculated.In order to reach a better performance of theseplanners, we will obtain a better representation of the connectivityof the configuration space. We develop thisidea to solve the motion planning problem for a specifickind of robots, the "free flying objects" with six degreesof freedom. We show results that allow us to besure that geometric features can be used to build heuricticswhich can find free configurations close to the obstaclesand such heuristic can be used to solve the narrow corridorproblems.
A 'computer tutor' to assist children develop their narrative writing skills: conferencing with HARRY
Authors: C. E. Holdich, P. W. H. Chung
Venue: International Journal of Human-Computer Studies (2003)

The purpose of this study was to test the hypothesis that a computer tool can change the way children approach the task of writing and improve their writing performance. HARRY, a web-based computer tutor, provides a Vygotskian-like scaffolding of the knowledge transforming mature writing process and presents it to children individually in a conference situation. The effects of the computer tutor are analysed by comparing stories produced by three children of varied writing ability, who wrote a control and a HARRY-assisted story, and by observing the children as they wrote. A control group also wrote two stories without receiving assistance for either story. The study's hypothesis was confirmed. With HARRY's assistance, the children wrote better stories and employed the revision process characteristic of mature writers. Vygotsky's work suggests that children will learn to adopt the mature approach from repeated use of the system and that the scaffolding should be reduced gradually. However, as the system relied upon the children's willingness to first request, then act upon the available guidance, the system would benefit from further development to ensure children interact sufficiently with HARRY.
Defining requirements for the development of business-to-business web sites
Authors: Tracey Lynn Cekada
Venue:  (2002)

The purpose of this study is to attempt to determine the purposes for which companies are developing web sites (e.g., to provide B2B or B2C transactions, information and/or to simply have an Internet presence), and of these, which purpose has the most significant need for having requirements defined. Once the most significant purpose is identified, the study then focuses on gathering the needed information for creating a requirements document for this type of web site. This study involved descriptive research using both quantitative and qualitative methods. A priority assessment study was conducted to collect quantitative data on the purpose behind why companies are developing web sites. This assessment identified the development of web sites with B2B applications as a priority for further research. After the priority assessment study was conducted, both qualitative and quantitative data were collected to determine those requirements that should be included in a requirements document when developing a web site for B2B purposes.Quantitative data was collected using a Likert scale of 1 to 5. Frequency distribution, mean score, and standard deviation were calculated to determine the distribution frequencies and central tendency of the rating. The participants' written comments to their ratings on the Likert scale provided qualitative data that was used to substantiate the quantitative data collected. The findings resulted in the development of a template that companies can use as a guide when initiating the development of a requirements document for the development of a B2B web site application.
A Dynamic Content Integration Language for Video Data and Web Content
Authors: Takayuki Yumoto, Qiang Ma, Kazutoshi Sumiya, Katsumi Tanaka
Venue: Proceedings of the Fourth International Conference on Web Information Systems Engineering (2003)

Dynamic content integration of multiple information sources is one way of providing richer content that will satisfy the diverse demands of users. In this paper, we propose an XML-based language to compose synchronized content from web and video content. The notable features of this language are as follows: (1) dynamic unit identification of content that is composed into synchronized content and (2) dynamic retrieval of content through pre-defined retrieval criteria. This dynamic identification and retrieval of composable units are based on the author's intentions. Content authors can specify the units of their content that are to be integrated into new content by describing the conditions concerning this content and the conditions concerning the surrounding content. Although the proposed language looks like SMIL (Synchronized Multimedia Integration Language), it differs in its dynamic identification and retrieval capabilities. Indeed, the proposed language works just like the meta-mechanism for conventional SMIL. That is, the script written by the proposed language can generate SMIL data as its output.
Calendar
Venue: Queue (2003)

Conference on Universal Usability (CUU) November 10-11, 2003 Vancouver, Canada http://www.acm.org/sigs/sigchi/ SuperComputing International Conference for High Performance Computing and Communications November 15-21, 2003 Phoenix, Arizona http://www.sc-conference.org/
Problem Collection of the DIMANET M&aacute;trah&aacute;za Workshop, 22&ndash;28 October 1995
Authors: Anonymous
Venue: Combinatorics, Probability and Computing (1999)

1. Noga AlonPaul Erd&ouml;s [2] conjectured in 1979 that, if in a graph on n vertices any set of &lfloor;&radic;n&rfloor; vertices contains at least one edge, then there is a set of &lfloor;&radic;n&rfloor; vertices that contains &Omega;(&radic;n log n) edges. As observed by Erd&ouml;s, this result, if true, is tight. During the workshop, and after discussions with various participants including Cameron, Erd&ouml;s, Gunderson and Krivelevich, we found a proof of this conjecture, combining some probabilistic arguments with the main result of [1] (see also [3]). Hopefully this will appear in a forthcoming paper, where we also plan to include a simple proof of an extension of the main result of [1].
Conceptual foundations of user preference modeling
Authors: Zohair Chentouf, Ahmed Khoumsi, Soumaya Cherkaoui
Venue: Network control and engineering for Qos, security and mobility II (2003)

Emerging telecommunications architectures, such as IP telephony, offer more signaling flexibility, elaborated feature creation techniques and user preference expression possibilities. The present article focuses on the last point. At our knowledge, no work that presents a thorough analysis of the user preference concept has been reported in the literature. The present article aims at inciting interest to this research axis. It specifies a user preference conceptual model to determine the different concepts that may be subject to user preferences. This conceptual model allows us to categorize the preference expression schemas that are possible to perform on the different conceptual model elements, and specify the architectural and language requirements necessary to implement those preference expression schemas. Examples of new services obtained by the user preference growing expression possibilities are then given. The benefits of the proposed user preference conceptual model are to direct the research work in this area and to provide a theoretical tool to analyze the expressive power of user preference modeling languages.
The societal impact of the world wide web: key challenges for the 21st century
Authors: Janice M. Burn, Karen D. Loch
Venue: Advanced topics in information resources management (2003)

This paper addresses the impact of information technology (IT) and the World Wide Web (WWW) on the 21st century and the challenges which we will face as responsible members of a dynamically changing society. Reviewing the spread of potentially alienating technology, the paper highlights the implications for change with reference to the "haves" and the "have nots" -- developing societies, economically disadvantaged groups, women and children. The authors argue that organisational, sociological and cultural factors may inhibit an effective transformation to a global Information Society. Particular consideration is given to policies, infrastructure, human resources and development responsibilities in developing societies.
Practical, distributed network coordinates
Authors: Russ Cox, Frank Dabek, Frans Kaashoek, Jinyang Li, Robert Morris
Venue: ACM SIGCOMM Computer Communication Review (2004)

Vivaldi is a distributed algorithm that assigns synthetic coordinates to internet hosts, so that the Euclidean distance between two hosts' coordinates predicts the network latency between them. Each node in Vivaldi computes its coordinates by simulating its position in a network of physical springs. Vivaldi is both distributed and efficient: no fixed infrastructure need be deployed and a new host can compute useful coordinates after collecting latency information from only a few other hosts. Vivaldi can rely on piggy-backing latency information on application traffic instead of generating extra traffic by sending its own probe packets.This paper evaluates Vivaldi through simulations of 750 hosts, with a matrix of inter-host latencies derived from measurements between 750 real Internet hosts. Vivaldi finds synthetic coordinates that predict the measured latencies with a median relative error of 14 percent. The simulations show that a new host joining an existing Vivaldi system requires fewer than 10 probes to achieve this accuracy. Vivaldi is currently used by the Chord distributed hash table to perform proximity routing, replica selection, and retransmission timer estimation.
Security Design in Online Games
Authors: Jeff Yan
Venue: Proceedings of the 19th Annual Computer Security Applications Conference (2003)

The emergence of online games has fundamentally changedsecurity requirements for computer games, which previouslywere largely concerned with copy protection. In thispaper, we examine how new security requirements impactthe design of online games by using online Bridge, a simpleclient-server game, as our case study. We argue that securityis emerging as an inherent design issue for onlinegames, after graphics and artificial intelligence, which havebecome important issues of the design of most games fordecades. The most important new security concern in on-linegame design is fairness enforcement, and most securitymechanisms all contribute to a single objective, namely,making the play fair for each user.
Structure of the exact wave function: progress report
Authors: Hiroshi Nakatsuji
Venue: Proceedings of the international conference on Computational methods in sciences and engineering (2003)

Solving the Schrödinger equation and the corresponding relativistic equation is a central theme of theoretical chemistry because of its scientific and practical importance. In our series of studies [1-7], we have investigated the structure of the exact wave function and the methods to calculate the exact wave function.
Device State Recovery in Non-volatile Main Memory Systems
Authors: Ren Ohmura, Nobuyuki Yamasaki, Yuichiro Anzai
Venue: Proceedings of the 27th Annual International Conference on Computer Software and Applications (2003)

This paper proposes a scheme to recover the state of peripheraldevices in non-volatile main memory systems sothat the system resumes its execution after an unpredictablepower failure. Our scheme is software-based approach andaccomplishes the recoverable system without complex hardwareequipments. First, the requirements for maintainingconsistency are discussed based on the concepts of distributedmessage-passing systems. Next, the application toa device driver are illustrated using an example. Experimentswith UART and network devices showed that the systemrestarted properly after a power failure, and that systemperformance was barely decreased.