ppxscal/embedding_network huggingface dataset:
Involving students in undergraduate research and development: two perspectives
Authors: M. Kurland, H. Rawicz
Venue: Proceedings of the Frontiers in Education Conference, on 1995. Proceedings., 1995 - Volume 02 (1995)

At Trenton State College the faculty is greatly involved with introducing research and design to the undergraduate engineering students. We present two distinct but equally effective methods to reach our goals. One of the authors has successfully bought small contracts to the school that have involved a number of undergraduate students in the study of global positioning satellites, GPS. The students' efforts had a wide range of tasks including simulating portions of the GPS payload in BASIC, modifying the BODE PLOT of the hybrid phase locked loop which shapes the spectrum of the atomic clock to maximize system timing accuracy, and simulating the GPS 24 satellite constellation spatial dynamics and the distributed AUTONAV Kalman Filter operations in MATLAB. All the students involved with this method of undergraduate involvement in research and development have gone on to obtain employment in related areas of engineering. The second author has involved a number of students in the design development and construction of a microprocessor controlled wheelchair for the severely physically challenged. Several other students have become involved with this project and have enlarged the area of development to include voice control and breath control of the wheelchair. A patent application has been submitted for the microprocessor Controlled Wheelchair. The students involved with this method of undergraduate research and development have all used their experiences to obtain employment in related engineering fields.
An Optical Burst Switched network architecture with passive access
Authors: Arnaud Cauvin, Philippe Niger, Julio Orozco, Gilles Bertrand
Venue: Proceedings of the Third International Conference on Networking and Services (2007)

This document presents an optical network architecture that considers passive access segments and optical burst switching. The architecture seeks the provisioning of very high speed end-to-end optical communications with great flexibility and efficient resource utilization while taking advantage of an installed infrastructure. We discuss the operation principles of a signaling protocol suitable for the control plane of the proposed architecture. We also present a simulation model and use it in a performance study. Our results show that the shared nature of the access segments has a major effect on utilization and loss performance, highlighting the need for improved resource allocation methods.
On model quality and evaluation in speaker verification
Authors: J. Koolwaaij
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 06 (2000)

This paper addresses differences between operational speaker verification (SV) systems and laboratory experiments in terms of performance and methods for measuring performance. It is concluded that operational SV systems need an indication of the quality of newly enrolled speaker models, to decide whether to re-enrol or request more enrolment material. We have investigated the impact of ASR errors on model quality. While attempting to design measures for the quality of speaker models we have developed a novel method for assigning weights to the contribution of models in accordance with their discriminative ability.
Self-assessed confidence in EC-2000 outcomes: a study of gender and ethnicity differences across institutions
Authors: M. Moreno
Venue: Proceedings of the 30th Annual Frontiers in Education - Volume 01 (2000)

With the establishment of the challenging Engineering Criteria 2000 (EC-2000) accreditation guidelines, institutions must obtain a more informed understanding of students' underlying knowledge, skills, and attitudes as they begin, matriculate, and eventually complete their engineering studies. As engineering educators collect information about how students demonstrate achievement in the "a-k" outcomes, questions arise as to whether differences exist between student groups, specifically gender and ethnicity differences. Such differences may potentially affect a student's performance and persistence in engineering. Prior research indicates that engineering students' initial attitudes, along with gender and ethnicity, are linked to first term probation and retention in the freshman year. How they are linked to achievement of the EC-2000 outcomes is still an open question. At the University of Pittsburgh, we are investigating how confidence in the outcomes changes throughout a student's undergraduate engineering career and how these self-assessed outcomes correlate with other 'a-k' outcome metrics. As part of the larger study, the paper explores the issue of how confidence in the outcomes is influenced by gender and ethnicity factors at the freshman level. Using the Pittsburgh Freshman Engineering Attitude Post-Survey/sup TM/ and data from 16 US engineering schools, who took the questionnaire during the 1998-99 academic year, we have found a number of significant and consistent differences in the 11 outcomes with respect to student gender and ethnicity.
Mood change and computer anxiety: A comparison between computerised and paper measures of negative affect
Authors: J. T. Norris, R. Pauli, D. E. Bray
Venue: Computers in Human Behavior (2007)

The lack of equivalence between computerized and pencil-and-paper administration in measures of negative affect have been attributed to variance created by negative affect towards computers or computer anxiety (CA). In the current study, paper baseline computer anxiety and state/trait anxiety measures were obtained from 51 first-year psychology undergraduate volunteers. Further measures were taken by either paper or computer before and after students received their grade for the first research methods practical report of the course. Levels of state anxiety (SA) were found to increase significantly at this time. A lexical decision task was completed at each measurement stage as an additional behavioural mood indicator. Results revealed that CA was only related to SA prior to receipt of grade, at a point where equivalence between administration method of measures had been demonstrated. Non-equivalence in measurement of SA occurred after students had received their mark, in that levels of anxiety increased in the computer condition and decreased in the paper condition. Lack of equivalence, therefore, appears to be a function of psychological stress, characterised by affective modulation rather than CA.
An efficient switching system for next-generation large-scale computer networking
Authors: N. F. Mir
Venue: Proceedings of the The 8th International Conference on Communication Systems - Volume 02 (2002)

A switching fabric called the spherical switching network (SSN) for high-speed applications in next-generation networking is introduced. The performance evaluation and comparison show that this network clearly outperforms typical interconnection networks currently being deployed in practical switches and routers such as a multi-stage network. The spherical switching network has a cyclic, regular, and highly expandable structure with a simple self-routing scheme. The network is constructed with fixed-size switch elements regardless of the size of the network. Each switch element consists of a carefully-selected sized 9 /spl times/ 9 crossbar and a local controller. One of the nine pairs of links is external and carries the external traffic, and the other eight pairs are internal. The contention resolution in each switch element is based on deflection of losing packets and incremental priority of packets. In order to keep the number of deflections low, each incoming external link is connected to a buffer with flow control capabilities. Due to the special arrangement of interconnections in the network, the network operates efficiently since the occurrence of deflections is dramatically reduced.
Automated Planning in Temporal Domains: Some Recent Advances and Current Research Topics
Authors: Alfonso Gerevini
Venue: Proceedings of the 14th International Symposium on Temporal Representation and Reasoning (2007)

Automated planning is a central area of artificial intelligence, involving the design of languages and computational models for reasoning about actions, change and time. In domain-independent planning, a planning problem is specified by the description of an initial world state, a set of desired goals to achieve and a set of possible actions or action schemata (domain operators). A solution of a planning problem is a (partially) ordered set of actions forming a valid plan, whose execution in the initial state transforms it into a world state where the problem goals are satisfied.
Estimation of Estuary Phytoplankton using a Web-based Tool for Visualization of Hyper-spectral Images
Authors: Vladimir J. Alarcon, John van der Zwaag, Robert Moorhead
Venue: Proceedings of the 35th Applied Imagery and Pattern Recognition Workshop (2006)

The development of web-based tools for visualization and processing of hyper-spectral images has been slow. Memory and processing capabilities of personal computers may have precluded the development of web-based tools. However, fast access to remote databases, increasing microprocessors' speed, and grid portals that provide interconnection between remote nodes sharing data and computing resources, make possible remote exploration and analysis of hyper-spectral data cubes. This paper presents a web-based visualization tool for exploring MODerate Resolution Imaging Spectroradiometer (MODIS) data cubes. It provides capabilities for individual pixel's reflectance-spectra visualization, onthe- fly per-pixel calculation and visualization of chlorophyll-a and phytoplankton-carbon concentration values. The web-based interface also generates Normalized Difference Vegetation Index images from the multi-spectral information contained in MODIS datasets. The tool is applied to estimate phytoplankton concentrations in the Saint Louis Bay estuary (Mississippi). Chlorophyll-a estimations produced by the web-based tool compare well with in-situ measurements from a field survey performed during August 2001. Phytoplankton concentrations are calculated using those estimations of chlorophyll-a concentrations generated by the web-based tool. The higher spatial resolution provided by the interface allowed estimating constituents concentrations at geographical locations near the coast.
An application of distributed virtual environment to foreign language education
Authors: T. Nitta
Venue: Proceedings of the 30th Annual Frontiers in Education - Volume 01 (2000)

The new information technology called the distributed virtual environment or DVE is applied to English education for Japanese engineering students. The system is not a teaching tool for new knowledge of English but it provides computer augmented virtual places where students get together and work in cooperation in the target foreign language on some topical subjects in an appropriate atmosphere. DVE has proven to have a prominent potentiality to let students speak out aggressively in English. Details of the system and the experiences are presented in this paper.
Geometric issues in spatial indexing
Authors: Hanan Samet
Venue:  (2006)

We address a number of geometric issues in spatial indexes. One area of interest is spherical data. Two main examples are the locations of stars in the sky and geodesic data. The first part of this dissertation addresses some of the challenges in handling spherical data with a spatial database. We show that a practical approach for integrating spherical data in a conventional spatial database is to use a suitable mapping from the unit sphere to a rectangle. This allows us to easily use conventional two-dimensional spatial data structures on spherical data. We further describe algorithms for handling spherical data. In the second part of the dissertation, we introduce the areal projection, a novel projection which is computationally efficient and has low distortion. We show that the areal projection can be utilized for developing an efficient method for low distortion quantization of unit normal vectors. This is helpful for compact storage of spherical data and has applications in computer graphics. We introduce the QuickArealHex algorithm, a fast algorithm for quantization of surface normal vectors with very low distortion. The third part of the dissertation deals with a CPU time analysis of TGS, an R-tree bulkloading algorithm. And finally, the fourth part of the dissertation analyzes the BV-tree, a data structure for storing multi-dimensional data on secondary storage. Contrary to the popular belief, we show that the BV-tree is only applicable to binary space partitioning of the underlying data space.
The RapidOWL Methodology--Towards Agile Knowledge Engineering
Authors: Soren Auer
Venue: Proceedings of the 15th IEEE International Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises (2006)

Agile methodologies have recently gained growing success in many economic and technical spheres. This is due to the fact that flexibility, in particular fast and efficient reactions to changed prerequisites, is becoming increasingly important in the information society. To support adaptive, semantic collaboration between domain experts and knowledge engineers, a new, agile knowledge engineering methodology, called RapidOWL is proposed. This methodology is based on the idea of iterative refinement, annotation and structuring of a knowledge base. A central paradigm for the RapidOWL methodology is the concentration on smallest possible information chunks. The collaborative aspect comes into play, when those information chunks can be selectively added, removed, annotated with comments or ratings. Design rationales for the RapidOWL methodology are to be light-weight, easy-to-implement, and support of spatially distributed and highly collaborative scenarios.
The Increasing Use of Visualization in Ship Hydrodynamics
Authors: Joseph Gorski, Michael Ebert, Susan Brewton, Peter Chang, Ronald Miller, Joseph Slomski, William Smith, Wesley Wilson
Venue: Proceedings of the HPCMP Users Group Conference (2006)

Flow field visualization is an important part of the study of fluid dynamics and ship hydrodynamics. The field of computational fluid dynamics has provided an unprecedented ability to explore the hydrodynamics of marine vehicles through visualization. Many examples of this exist in the literature for steady flow field situations. However, unsteady visualization provides both challenges and opportunities to extract meaningful physical insight and information from computational simulations. This paper discusses some of these issues along with approaches being pursued to obtain adequate flow field information using remote high performance computing resources as well as concurrent visualization using local resources. A number of examples of flow field computations being pursued are discussed including: cavity flow, ship roll motions, trailing edge vortex shedding, ballast water exchange and crashback.
Compressed Delta Encoding for LZSS Encoded Files
Authors: Shmuel T. Klein, Dana Shapira
Venue: Proceedings of the 2007 Data Compression Conference (2007)

We explore the Full Compressed Delta Encoding problem in compressed texts, defined as the problem of constructing a delta file directly from the two given compressed files, without decompressing. We concentrate on the case where the given files are compressed using LZSS and propose solutions for the special cases involving substitutions only.
Making design teams work
Authors: J. E. Seat
Venue: Proceedings of the 26th Annual Frontiers in Education - Volume 01 (1996)

At the University of Tennessee, Knoxville, senior mechanical engineering students participate in a two semester capstone design project. The students work in teams on a problem provided by industry to create a realistic environment for using their engineering skills in an applied setting. This scenario provides not only a real design problem, it also produces the same people problems encountered by industry when technical work is performed in groups. In an effort to improve the group working experience, interventions directly aimed at improving the communication skills of the students and teams were used. Coaches were used to facilitate group performance. The interviews and results of the data provide insights into the team experience of the students. This program has many facets. The topics discussed in this paper are the design of the communications training, coaching strategy and interventions, closing interview comments from the students, and cohesion. Finally, future plans for expanding this research are discussed.
Product Model Data Exchange Technology of Heterogeneous Systems in Collaborative Design Environment
Authors: Xiao Zhou, Hong Jia, Yanlin Lu, Weilong Ding
Venue: Proceedings of the 16th International Conference on Artificial Reality and Telexistence--Workshops (2006)

The network design based on internet/intranet among cooperative enterprises is a hot topic nowadays, and information exchange is one of the key issues of the collaborative design among heterogeneous systems in the field of network manufacturing. Compared with the existing technologies on collaborative design, the paper mainly focuses on the representation of product model data using XML. The collaborative work mechanism based on STEP is presented. According to AP203, the rules mapping EXPRESS into XML under OSEB is then described. Finally, XML_DTD is generated by using the above rules. The mechanism proposed in our paper can be explored to product model data exchange and integration among heterogeneous systems.
Case-based reasoning for design composition in architecture
Authors: Susan Finger
Venue:  (2004)

This thesis presents a process model for design composition using an abstraction of form and function characteristics of design solutions. The design process model is based on adapting previous solutions to generate new designs using derivational analogy. The model relies on a geometric representation of design compositions. This representation encodes functional and form attributes of design and is used to build compositional characteristics of the design. The research uses Solution Traces (Sol-Traces) as constructs for recording and reusing the design composition. The trace consists of compositional steps. The trace---the sequence of steps---can be replayed to generate design solutions. Design reasoning with architectural cases has a long history in architecture. Generative case based reasoning using derivational analogy is a powerful problem solving technique that enables new designs to be created by utilizing the generative path of prior designs. This technique is adapted for use in developing a design assistance system for design composition in architecture. Solution Traces (Sol-Truces) are used within a CBR methodology for a design composition assistant: the TRACE system. Cases in TRACE include architectural representations such as floor plans, form diagram, function diagram, and the sequence of design composition steps that lead to a particular solution. The TRACE system utilizes two strategies, transformations and formative ideas, to generate forms. Cases and their components are classified and indexed in the case base using both form and function attributes. The thesis presents three worked examples using the TRACE system.The main contributions of the research are: the abstraction language for design composition using the Sol-Traces representation and the process model for design composition using this approach. Another contribution of the research is the application of the generative CBR, using derivational analogy, in architectural design composition at the early phases. The research also provides the development of the TRACE system as a CBR system utilizing the research findings.
HOT 12 Interconnects - Symposium on High Performance Interconnects [2004] - Cover
Venue: Proceedings of the High Performance Interconnects, 2004. on Proceedings. 12th Annual IEEE Symposium (2004)

IEEE 802.11 wireless LAN technology is mainly used as an access network within corporate enterprises. All the WLAN access points are eventually connected to a wired backbone to reach the Internet or enterprise computing resources. We aim to expand WLAN into an enterprise-scale backbone network technology by developing a multichannel wireless mesh network architecture called Hyacinth. Hyacinth equips each node with multiple IEEE 802.11a/b NICs and supports distributed channel assignment/routing to increase the overall network throughput. We present the results of a detailed performance evaluation study on the multichannel mesh networking aspect of Hyacinth, based on both NS-2 simulations and empirical measurements collected from a 9-node Hyacinth prototype testbed. A key result of this study is that equipping each node of a Hyacinth network with just 3 NICs can increase the total network bandwidth by a factor of 6 to 7, as compared with single-channel wireless mesh network architecture. 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
Thin film formation-a fabrication on non-planar surface by spray coating method
Authors: M. Ichiki, Lulu Zhang, Zhen Yang, T. Ikehara, R. Maeda
Venue: Proceedings of the Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS (2003)

This paper presents a three-dimensional micro fabrication and integration technology of smart materials for MEMS by spray coating method. It is shown that SCM is proved most effective in additional deposition on non-planar surface. PZT film is formed both on flat and non-flat surface and its thickness is around 1 /spl mu/m. Perovskite structure is formed in suitable heat treatment. Ferroelectric P-E hysteresis loop is also obtained. This paper is the first report on deposition of smart materials for MEMS with use of spray coating method from our group and also other researchers. Spray coating method has been proposed for three-dimensional coating method. It is also possible for spray coating method to deposit piezoelectrics, pyroelectrics, magnetics, etc., for sensor and/or actuator after improvement of system construction. Hydrophilic and hydrophobic properties between substrate surface and ejected liquid are most essential process factor of spray coating method in order to improve the film growth condition.