ppxscal/embedding_network huggingface dataset:
Multiplexed predictive coding of speech
Authors: S. V. Andersen
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 200. on IEEE International Conference - Volume 02 (2001)

We present a novel method for predictive coding with application to transmission of speech over packet-switched networks. Our method uses multiplexing to distribute a part of the information about a segment of each speech signal in several data packets while keeping the data packet rate and payload for that part of the information unchanged. We investigate three multiplexing schemes: a packet hopping, a Hadamard multiplexing, and an extension of the Hadamard multiplexing that exploits a nonlinear preprocessing and estimation method. We show by means of formal AB-preference tests that multiplexed predictive coding can lead to coders that are more robust to packet losses than scalar quantization and packet loss concealment according to the G.711 standard.
Improved instructional techniques in HVAC control systems
Authors: A. Watton
Venue: Proceedings of the 26th Annual Frontiers in Education - Volume 01 (1996)

The development effort was devoted to the evolution of a coordinated group of three laboratory experiments in heating, ventilating, and air conditioning (HVAC) control systems of the type used in commercial buildings and other large installations. Three experiments are included in the development effort, namely: (a) Single-loop control system-air; (b) Single-loop control system-water and (c) Multiple-zone economizer cycle. The systems make use of pneumatic, electronic (analog), and direct-digital (microprocessor-based) control units. All three systems are designed to have reproducible and adjustable characteristics and are fully instrumented to permit quantitative measurements and recordings of steady-state and dynamic behavior. A mathematical model built with MATLAB-SIMULINK is used to check the dynamics of the single-loop-air experiment. Initial classroom experience indicates the approach used makes possible a highly-effective instructional environment.
Unfairness in parallel job scheduling
Authors: P. Sadayappan
Venue:  (2006)

Job scheduling has been an active area of research for many years. Most modern schedulers implement a form of space shared scheduling known as backfilling. Backfilling is a technique used to allow jobs to start out of order, which results in higher utilization and lower average turnaround times. An area that has not been addressed is the impact of these backfilling schemes on the fairness of jobs and users. It is of interest to quantify and study the impact of backfilling on various fairness metrics. Sociology, computer networking and operations research provide evidence of the importance of fairness in queuing disciplines. Currently, there is no accepted model for characterizing fairness in parallel job scheduling. We introduce two types of fairness metrics intended for parallel job schedulers, both of which are based on models from sociology, networking, and/or operations research. The first metric type is motivated by social justice, where serving using in arrival order is considered fair. Therefore, the metric attempts to measure the deviation from arrival order. The second metric type is based on resource equality and compares the resources consumed by a job with the resources deserved by the job. These metrics are orthogonal to traditional metrics, such as turnaround time and utilization. To this end, we develop and introduce fairness metrics which are as independent as possible from current metrics such as utilization and turnaround time. The intent of the fairness metrics is to evaluate how fairly jobs or users are treated, in contrast to the quality of the generated schedule. Further, we plan to use these metrics to study the unfairness of backfilling strategies that have been proposed (and possibly implemented) by past job scheduling research and (where feasible) suggest changes to these strategies to improve fairness. The metrics are used to investigate a new moldable scheduler. An iterative moldable scheduler is introduced and compared to other moldable scheduling algorithms. The metrics are also used to evaluate the Ross/CPlant supercomputer from Sandia National Laboratory. The metrics provide insight to scheduling policy that would provide acceptable fairness to the community.
Shruti: A Self-Tuning Hierarchical Aggregation System
Authors: Praveen Yalagandula, Mike Dahlin
Venue: Proceedings of the First International Conference on Self-Adaptive and Self-Organizing Systems (2007)

Current aggregation systems either have a single inbuilt aggregation mechanism or require applications to specify an aggregation policy a priori. It is hard to predict the read and write access patterns in large systems and hence applications built on such systems suffer from inefficient network usage. We present Shruti, a system that demonstrates a general approach for self-tuning the aggregation aggressiveness to the measured workload in the system, thus optimizing the overall communication costs (e.g., the number of messages exchanged on read and write operations).
Reengineering sooner civil engineering education
Authors: L. D. Fink
Venue: Proceedings of the 30th Annual Frontiers in Education - Volume 01 (2000)

By reinventing the civil engineering educational system, we will be able to produce the master integrators of tomorrow. In addition to technical skills, we will imbue graduates with technical vision, business principles, marketing savvy, communications skills, leadership and management understanding. At the University of Oklahoma we are embarking on an ambitious curricular revolution that will transform what the students in the College of Engineering learn and how they learn it. The old paradigm mandates that students attend classes to accumulate the required number of credits to obtain a degree. We will replace that old culture with one in which students gain competencies through a variety of learning experiences: design and research projects; and off-campus internships, including participation in International projects. We will develop modules so that students learn new skills as they are needed within the design or research project, thus principles of "just-in-time" learning will be ubiquitous. While going through the curriculum, students will document and reflect on the meaning of what they are learning by creating a "Learning Portfolio," which will be one of the evidences of progress. Students will be charged with managing and taking responsibility for shaping their own education through active and higher level learning, all of which will develop lifelong learning skills.
patch (1) considered harmful
Authors: Marc E. Fiuczynski, Robert Grimm, Yvonne Coady, David Walker
Venue: Proceedings of the 10th conference on Hot Topics in Operating Systems - Volume 10 (2005)

Linux is increasingly used to power everything from embedded devices to supercomputers. Developers of such systems often start with a mainline kernel from kernel.org and then apply patches for their application domain. Many of these patches represent crosscutting concerns in that they do not fit within a single program module and are scattered throughout the kernel sources--easily affecting over a hundred files. It requires nontrivial effort to maintain such a crosscutting patch, even across minor kernel upgrades due to the variability of the kernel proper. Moreover, it is a significant challenge to ensure the kernel's correctness when integrating multiple crosscutting concerns. To make matters worse, developers use simple code merging tools that directly manipulate source file lines instead of relying on a lexical, grammatical, or semantic level of abstraction. The result is that patch maintenance is extremely time consuming and error prone. In this paper, we propose a new tool, called c4, designed to help manipulate patches at the level of their abstract syntax and semantics. We believe our approach will simplify the management of OS variations and thereby improve OS evolution.
A HIP Based Network Mobility Protocol
Authors: Szabolcs Novaczki, Laszlo Bokor, Sandor Imre
Venue: Proceedings of the 2007 International Symposium on Applications and the Internet Workshops (2007)

The rapid growth of IP-based mobile telecommunication technologies in the past few years has revealed situations where not only a single node but an entire network moves and changes its point of attachment to the Internet. The main goal of any protocol supporting network mobility (NEMO) is to provide continuous, optimal and secure Internet access to all nodes and even recursively nested mobile subnetworks inside a moving network. This paper describes a Host Identity Protocol (HIP) extension called HIP-NEMO, based on hierarchical topology, signaling delegation and connection tracking to enable secure and efficient network mobility support in the HIP layer.
Open network administrator (ONA): a web-based network management tool
Authors: Bruce Campbell, Robyn Landers
Venue: Proceedings of the 19th conference on Large Installation System Administration Conference - Volume 19 (2005)

This paper presents Open Network Administrator (ONA), a web-based network management tool. Network administrators interact with ONA over the web, and ONA interacts with routers, switches and access points, using telnet and/or SNMP. ONA provides a common web interface to a number of different vendors' network products, and provides granular access control, permitting network administrators across multiple departments to manage a network in a consistent manner. In addition to typical day-today operations like changing switch port speed, duplex, VLAN, etc., ONA performs a number of other maintenance operations, such as automatically backing up switch configurations, maintaining traffic graphs, and sending device reboot/up/down alerts via e-mail. ONA leverages some existing components, such as RRDtool [1] and CVSweb [2]. A summary of existing tools, both commercial and open source, is provided, with comparisons made to ONA. At the University of Waterloo, where there is both a central IT group and many sizeable decentralized autonomous IT groups, ONA rapidly gained widespread enthusiastic acceptance.
Best wavelet-packet bases for audio coding using perceptual and rate-distortion criteria
Authors: M. Erne
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 02 (1999)

This paper presents a new approach to the adaptation of a wavelet filterbank based on perceptual and rate-distortion criteria. The system makes use of a wavelet-packet transform where each subband can have an individual time-segmentation. Boundary effects can be avoided by using overlapping blocks of samples and therefore switching bases is possible at every tree-level without affecting other subbands. A modified psychoacoustic model using perceptual entropy can control the switching of the wavelet filterbank and the individual time-segmentation of every subband allows one to take advantage of temporal masking. Additionally a rate-distortion measure can control the filterbank for lossless audio coding applications or in cases where large coding gains can be achieved without using perceptual criteria. The weight of the perceptual measure as well as the weight of the rate-distortion measure can be selected individually, enabling to trade lossless coding versus perceptual coding.
Compositional specification of behavioral semantics
Authors: Kai Chen, Janos Sztipanovits, Sandeep Neema
Venue: Proceedings of the conference on Design, automation and test in Europe (2007)

An emerging common trend in model-based design of embedded software and systems is the adoption of Domain-Specific Modeling Languages (DSMLs). While abstract syntax metamodeling enables the rapid and inexpensive development of DSMLs, the specification of DSML semantics is still a hard problem. In previous work, we have developed methods and tools for the semantic anchoring of DSMLs. Semantic anchoring introduces a set of reusable "semantic units" that provide reference semantics for basic behavioral categories using the Abstract State Machine (ASM) framework. In this paper, we extend the semantic anchoring framework to heterogeneous behaviors by developing a method for the composition of semantic units. Semantic unit composition reduces the required effort from DSML designers and improves the quality of the specification. The proposed method is demonstrated through a case study.
Parallel Program Trace Extrapolation
Authors: Zulah K. F. Eckert, Gary J. Nutt
Venue: Proceedings of the 1994 International Conference on Parallel Processing - Volume 02 (1994)

Trace driven simulation has been shown to be an effective means of studying the detailed effect of a program on a specific execution architecture, particularly for memory systems. The technique often depends on taking a trace on one configuration of a machine, then effectively extrapolating the trace so that it represents the detailed behavior of the program on a related configuration. This paper proposes a hierarchical framework in which to study the effects of program non-determinism on program executions. Our goal is to ultimately characterize the complexity of trace extrapolation. We present some preliminary results and applications of the framework to related problems.
Producing enterprising engineers through integrated technology and business experiential learning
Authors: R. W. Brown, J. F. Odgers
Venue: Proceedings of the Frontiers in Education Conference, on 1995. Proceedings., 1995 - Volume 02 (1995)

More than ever before, engineers need business and personal skills as well as traditional technical skills, to prosper in their endeavours after graduation. Traditional courses are changing in delivery method and content to meet this need. At the RMIT, a new course format is aimed at producing enterprising engineers who understand the intricate interplay of business and commercial factors with the technical design process, and who are keen and able to lead in commercial ventures centred on technical design. To this end, the major subject stream-Engineering Design and Innovation-of the four year courses in Electronic and Communication Engineering and Computer Systems Engineering, features integrated delivery of a range of topics including technical, business, personal and management skills, in the one lecture stream. The paper describes the course development work already undertaken and the plans for completing this initiative.
Minimization problem in recovering the surface shape from shaded image
Authors: O. Ya. Koval'Chuk, P. I. Chopyk
Venue: Cybernetics and Systems Analysis (2007)

A mechanism of shape recovery when the light is reflected from a surface is considered. Shape-from-shading recovery is shown to be possible for both diffuse and mirror reflections. Minimization methods are proposed to use to improve the mirror reflection algorithm.
Minitrack: Business Models for Mobile Commerce
Authors: Matti Rossi, Virpi Kristiina Tuunainen
Venue: Proceedings of the 40th Annual Hawaii International Conference on System Sciences (2007)

This new minitrack hosts five papers covering different business model aspects of mobile commerce. This is the first year of this minitrack at HICSS. However, mobile information systems are no longer a novelty, but rather a ubiquitous phenomenon. Now the question is what will drive the future of wireless and mobile industry? We believe that the maturity of mobile commerce and its possibilities will raise interest into the minitrack. We also hope that the minitrack will generate interest and good quality research in the future.
Light propagation for mixed polygonal and volumetric data
Authors: C. Zhang, D. Xue, R. Crawfis
Venue: Proceedings of the Computer Graphics International 2005 (2005)

Some applications require scenes mixing polygonal and volumetric objects and shadows make the scenes more realistic. This paper describes a shadow algorithm for mixed polygonal and volumetric data, including the generation of soft shadows for area light sources. Our volume shader leverages advanced graphics GPU for an accelerated and feasible solution. The shadow and soft shadow algorithm applies to all combinations of volumes and polygons, without any restriction on the geometric positioning and overlap of the volumes and polygons. For realistic rendering where we have a high albedo participating media, multiple scattering is significant. We extend our algorithm to handle both multiple forward scattering and back scattering with light attenuation. This constitutes a complete system for shadow generation and light propagation.
A Distributed Differential Evolution Approach for Mapping in a Grid Environment
Authors: I. De Falco, U. Scafuri, E. Tarantino, A. Della Cioppa
Venue: Proceedings of the 15th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (2007)

Increase in intensive applications with different computational requirements, coupled with the unification of remote and diverse resources thanks to advances in the wide- area network technologies and the low cost of components, have encouraged the development of grid computing. To exploit the promising potentials of geographically distributed resources, effective and efficient mapping algorithms are fundamental. Since the problem of optimally mapping is NP-complete, the development of evolutionary techniques to find near-optimal solutions is welcome. In this paper a distributed system based on Differential Evolution is designed and implemented to face the mapping problem in a grid environment aiming at reducing the degree of use of the grid resources. This system is tested on some different resource allocation scenarios.
A Comparison Based Parallel Sorting Algorithm
Authors: Laxmikant V. Kale, Sanjeev Krishnan
Venue: Proceedings of the 1993 International Conference on Parallel Processing - Volume 03 (1993)

We present a fast comparison based parallel sorting algorithm that can handle arbitrary key types. Data movement is the major portion of sorting time for most algorithms in the literature. Our algorithm is parameterized so that is can be tuned to control data movement time, especially for large data sets. Parallel histograms are used to partition the key set exactly. The algorithm is architecture independent, and has been implemented in the CHARM portable parallel programming system, allowing it to be efficiently run on virtually any MIMD computer. Performance results for sorting different data sets are presented.
Modeling and fabrication of a microelectromechanical microwave switch
Authors: Ching-Liang Dai, Heng-Ming Hsu, Ming-Chang Tsai, Ming-Ming Hsieh, Ming-Wei Chang
Venue: Microelectronics Journal (2007)

A microelectromechanical microwave switch manufactured by using a complementary metal oxide semiconductor (CMOS) post-process has been implemented. An equivalent circuit model is proposed to analyze the performance of the microwave switch. The components of the microwave switch consist of a coplanar waveguide (CPW), a suspended membrane and supported springs. The post-process requires only one wet etching to etch the sacrificial layer, and to release the suspended structures. Experimental results show that the switch has an insertion loss of -2dB at 50GHz and an isolation of -15dB at 50GHz. The driving voltage of the switch approximates to 19V.
Visual Mining of Multi-Modal Social Networks at Different Abstraction Levels
Authors: Lisa Singh, Mitchell Beard, Lise Getoor, M. Brian Blake
Venue: Proceedings of the 11th International Conference Information Visualization (2007)

Social networks continue to become more and more feature rich. Using local and global structural properties and descriptive attributes are necessary for more sophisticated social network analysis and support for visual mining tasks. While a number of visualization tools for social network applications have been developed, most of them are limited to uni-modal graph representations. Some of the tools support a wide range of visualization options, including interactive views. Others have better support for calculating structural graph properties such as the density of the graph or deploying traditional statistical social network analysis. We present Invenio, a new tool for visual mining of socials. Invenio integrates a wide range of interactive visualization options from Prefuse, with graph mining algorithm support from JUNG. While the integration expands the breadth of functionality within the core engine of the tool, our goal is to interactively explore multi-modal, multi-relational social networks. Invenio also supports construction of views using both database operations and basic graph mining operations.
Demand-Driven Prioritization for ACERT
Authors: Richard Lau, Heechang Kim, Bruce Siegell, Stephanie Demers
Venue: Proceedings of the Second International Conference on Systems (2007)

Cognitive Adaptive Radio Teams (CART) is a new platform developed by our group1 in support of collaborative data collection and dissemination in a radiochallenged setting. The target scenario is characterized by a harsh ad-hoc radio environment with many-to-many multicast applications. In this paper we proposed a special data structure called Demand-Driven Prioritized Data Structure (DDPDS) that allows optimization of such data dissemination using cognitive wireless techniques.
Rhythmism: a VJ performance system with maracas based devices
Authors: Satoru dangkang Tokuhisa, Yukinari Iwata, Masa Inakage
Venue: Proceedings of the international conference on Advances in computer entertainment technology (2007)

We propose a nonconventional VJ performance system rhythmism which uses an original maraca based device that has 2 different functions, material maraca and effect maraca. Rhythmism uses the structure characteristic and the operating characteristics of maracas and adopts the interface to ensure the freedom of the user's physical movement and to realize the powerful attraction of the performance itself and aims to attain the multi-functionality and the arbitrary controllability.allIn this paper, we introduce the advantages and the interaction techniques of the maracas based device when used for VJ performances.
Functional verification based on the EFSM model
Authors: F. Fummi, C. Marconcini, G. Pravadelli
Venue: Proceedings of the High-Level Design Validation and Test Workshop, 2004. Ninth IEEE International (2004)

The paper presents a methodology for addressing hard-to-detect faults when a high-level ATPG is applied to verify functional descriptions of sequential circuits. A particular kind of extended finite state machines is adopted to improve detectability of such faults.
MUI-free receiver for a shift-orthogonal quasi-synchronous DS-CDMA system based on block spreading in frequency-selective fading
Authors: G. Leus
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 05 (2000)

We consider a shift-orthogonal (a shift-orthogonal set of code sequences is used) quasi-synchronous DS-CDMA system based on block spreading in the presence of frequency-selective fading. For such a system, we can develop a simple receiver that eliminates the multi-user interference (MUI) deterministically, without using any channel information, and suppresses the remaining (single-user) intersymbol interference (ISI), using a single-user channel estimation method (training-based or blind) or using a single-user direct approach (training-based or blind). The proposed transceiver is less complex than the previously developed VL-AMOUR transceiver (which has the same properties as the proposed transceiver), while their performances are comparable.