ppxscal/embedding_network huggingface dataset:
DSP for practicing engineers: an online course for continuing DSP education
Authors: J. Jackson
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2001. on IEEE International Conference - Volume 05 (2001)

The recent rapid increase in applications of DSP has generated a need for technical personnel with a DSP background. Until recently, most DSP education has been at the graduate level, so many practicing engineers are developing a need for additional DSP education. At Georgia Institute of Technology, we are delivering an online continuing education course that is targeted at these engineers. The 12-week course is comprised of three interconnected tracks in DSP system theory, real-time implementation principles, and laboratory assignments with MATLAB and the latest fixed-point TI DSP chips. The course was designed after a needs analysis performed by Texas Instruments training specialists. It is intended specifically to provide a full semester's course in a way that is adapted to the schedules and circumstances of practicing engineers. We describe both the content of the course and the technology for delivering it online.
On the Secure Software Development Process: CLASP and SDL Compared
Authors: Johan Gregoire, Koen Buyens, Bart De Win, Riccardo Scandariato, Wouter Joosen
Venue: Proceedings of the Third International Workshop on Software Engineering for Secure Systems (2007)

Development processes for software construction are common knowledge and mainstream practice in most development organizations. Unfortunately, these processes offer little support in order to meet security requirements. Over the years, research efforts have been invested in specific methodologies and techniques for secure software engineering, yet complete, dedicated processes have been proposed only recently. In this paper, two high-profile processes for the development of secure software, namely OWASP's CLASP and Microsoft's SDL, are evaluated and compared in detail. The paper identifies the commonalities, discusses the specificity of each approach, and proposes suggestions for improvement.
The National Classroom Oroject-an experience report
Authors: R. P. Cook
Venue: Proceedings of the 30th Annual Frontiers in Education - Volume 01 (2000)

The National Classroom Project (NCP) is exploring the effective use of in-class palm computers and Internet technology to enhance student learning in grades K-12 through college. The paper discusses lessons learned from three years of practical experience both on a college campus and in 5th and 9th grade classrooms in the local school district. Topics covered include technology and software in addition to classroom observations.
Fitting of ellipses from support function measurements
Authors: R. Noumeir
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 04 (2000)

Three new methods for fitting ellipses to regions are presented. They are based on the measurements of the support function of the region. The fitted ellipse is the one that: (1) minimizes the support function error, (2) circumscribes the region or (3) is inscribed in the region. These methods have the advantage of fitting an ellipse to a region without the need of the contour. They can be used on incomplete ellipses. Results are presented on simulated data and a real nuclear medicine image of the myocardium.
Realistic Hair from a Sketch
Authors: Jamie Wither, Florence Bertails, Marie-Paule Cani
Venue: Proceedings of the IEEE International Conference on Shape Modeling and Applications 2007 (2007)

This paper explores a sketch-based interface for quickly yet accurately creating visually realistic hair for virtual characters. Recently, physically-based models have proved successful for generating a wide variety of hair types, but they do not provide a straightforward method for designing target hairstyles. The contribution of this paper is to propose a user-friendly method for controlling such a physically-based model, requiring no specific knowledge of mechanics or hair styling: the user sketches example hair strands over a side view of the character's head, or alternatively annotates a picture of real hair viewed from the side serving as a reference. We show how the sketch can be used to infer the geometric and mechanical properties of the hair strands, to adjust the shape of the scalp, and to generate an adequate hair volume. Our method is validated on a wide variety of hair styles, from straight to curly and short to long hair.
Robust singing detection in speech/music discriminator design
Authors: Wu Chou
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 200. on IEEE International Conference - Volume 02 (2001)

In this paper, an approach for robust singing signal detection in speech/music discrimination is proposed and applied to applications of audio indexing. Conventional approaches in speech/music discrimination can provide reasonable performance with regular music signals but often perform poorly with singing segments. This is due mainly to the fact that speech and singing signals are extremely close and traditional features used in speech recognition do not provide a reliable cue for speech and singing signal discrimination. In order to improve the robustness of speech/music discrimination, a new set of features derived from the harmonic coefficient and its 4 Hz modulation values are developed in this paper, and these new features provide additional and reliable cues to separate speech from singing. In addition, a rule-based post-filtering scheme is also described which leads to further improvements in speech/music discrimination. Source-independent audio indexing experiments on the PBS Skills database indicate that the proposed approach can greatly reduce the classification error rate on singing segments in the audio stream. Comparing with existing approaches, the overall segmentation error rate is reduced by more than 30%, averaged over all shows in the database.
Augmenting Reed&ndash;Solomon coding with retransmission for error recovery in 3G video broadcasts: Research Articles
Authors: Kyungtae Kang, Yongwoo Cho, Heonshik Shin
Venue: Concurrency and Computation: Practice Experience (2007)

The error-prone nature of the radio channel is the major challenge in servicing video streams over cdma2000 broadcast networks. The MAC protocol for broadcast and multicast services (BCMCS) in cdma2000 specifies forward error correction using Reed&ndash;Solomon coding, which is effective in recovering from bursts of errors. However, its performance degrades significantly when channel conditions are bad, a frequent occurrence at the edge of the coverage area, reducing the availability of high-speed broadcasts. We propose an error recovery scheme and a scheduling algorithm based on the use of slots saved by changing to a Reed&ndash;Solomon code with a lower parity overhead. Within the fixed transmission budget thus created, corrupted packets are retransmitted in a priority order determined by a utility function that is derived from the map of the error control block at each mobile, and which also considers the number of mobiles that did not receive each lost packet. Simulation results show the effectiveness of the proposed scheme in improving the quality of high-data-rate MPEG-4 video streams over a range of channel conditions. Copyright &copy; 2007 John Wiley & Sons, Ltd.
DP: a library for building portable, reliable distributed applications
Authors: David M. Arnow
Venue: Proceedings of the USENIX 1995 Technical Conference Proceedings on USENIX 1995 Technical Conference Proceedings (1995)

DP is a library of process management and communication tools for writing portable, reliable distributed applications. It provides support for a flexible set of message operations as well as process creation and management. It has been successfully used in developing distributed Monte Carlo, disjunctive programming and integer goal programming codes.It differs from PVM and similar libraries in its support for lightweight, unreliable messages, as well as asynchronous delivery of interrupt-generating messages. In addition, DP supports the development of long-running distributed applications tolerant to the failure or loss of a subset of its processors.
Curriculum revision and course development in digital signal transmission
Authors: M. Moussavi
Venue: Proceedings of the Frontiers in Education Conference, 2001. 31st Annual - Volume 02 (2001)

In response to the high demand for specialists in the area of telecommunication and computer related fields in New England, the Department of Electronic Engineering at Johnson & Wales has gone through tremendous revisions in its program. Many courses were completely removed from the existing program and many new and more demanding courses were appended to replace the pervious courses. The new Electronic Engineering program is divided into two two-year curriculums. The second two-years is divided into three concentrations as follow: Digital System Engineering; Network Engineering; and System Engineering. The most difficult part of the conversion from the old to the new curriculum was the course developments, specifically those courses that are of great demand in today's high-tech industry. One of these courses is Digital Signal Transmission (DST). The development of such a course became even more difficult due to the almost nonexistence of a very similar course in the engineering programs around the nation whose courses we reviewed. Selecting a textbook for such a course was another problematic issue. A textbook that covered all the designated subject areas of our Digital Signal Transmission course proved to be difficult. This paper intends to show the process of our curriculum revision as well as the course development for Digital Signal Transmission. 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
The effect of the computerization of the toefl on the english language proficiency testing of international students at the university of mississippi
Authors: Esim Erdim Payne
Venue:  (2005)

The Test of English as a Foreign Language (TOEFL) currently has two different forms, the Paper-based TOEFL (PBT) and the Computer-based TOEFL (CBT). The CBT represents advances in information technology that have allowed test publishers to incorporate computer-adaptive testing (CAT) techniques and to employ question types that are unavailable for paper-based testing. Computerization has lead to greater costs for students as well as potential for greater measurement accuracy. The purpose of this dissertation was to determine the effect of the computerization of the TOEFL on the measurement of ESL proficiency of incoming international students at The University of Mississippi (UM) by examining the correlation between the University's placement test, comprised of the Michigan Test of English Language Proficiency and the Listening Comprehension Test (MTELP/LCT), and the two different versions of the TOEFL, the CBT and the PBT. This was a post hoc study intended to correlate already existing data for the purpose of examining them in new ways. The participants in the study were those who had submitted TOEFL scores as part of their applications to graduate and undergraduate programs at UM and who took the MTELP/LCT upon arrival on campus in August 2001. Fifty-three submitted PBT scores; 39 submitted CBT scores. Pearson product-moment correlation analysis revealed that both TOEFLs correlated highly with the MTELP/LCT, but the CBT ( r=.742) was higher than the PBT (r=.658). Since CAT was incorporated unevenly throughout the CBT and not at all on the PBT, multiple regression analysis of the two different versions' subtests was performed. This analysis revealed that the Listening Comprehension subtest of the CBT (&beta;=|.464|), which fully incorporated CAT, was responsible for most of the test's correlation with the MTELP/LCT, while Structure and Written Expression (&beta;=|.251|), which only partially employed CAT, and Reading Comprehension (&beta;=|.154|) which did not use it at all, had weaker impact on the correlation. The main conclusion of this dissertation is that the effect of the computerization of the TOEFL on incoming international students at UM is reflected in statistical terms by increased measurement precision resulting mainly from the use of CAT in the Listening Comprehension subtest.
Bayesian MAP restoration of scintigraphic images
Authors: K. J. Jones
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1999. on 1999 IEEE International Conference - Volume 06 (1999)

We are interested in the problem of restoring scintigraphic images acquired by a gamma detector in nuclear medicine. The aim is to improve the detectability of possible heterogeneous areas in different organs. We propose to solve the problem in the Bayesian framework with the maximum a posteriori (MAP) principle. The prior information was modeled by a Markov random field (MRF). The optimization is based on two kinds of methods: the stochastic algorithm of simulated annealing with a Gibbs sampler, and the deterministic algorithm of graduated non-convexity (GNC). We compared the results to the images restored by the Metz filter, more classical in this field. We applied these methods to the restoration of cold or warm nodules in the thyroid gland. We noticed the superiority of the proposed methods in terms of contrast around the nodules and uniformity in the images.
Integration of Data Compression and Cryptography: Another Way to Increase the Information Security
Authors: Chuangfeng Lv, Qiangfu Zhao
Venue: Proceedings of the 21st International Conference on Advanced Information Networking and Applications Workshops - Volume 02 (2007)

The main purpose of data compression is to reduce the memory space or transmission time, while that of cryptography is to keep the security of the data. So far, these two technologies have been studied separately. This is because any data can be compressed if necessary, and then encrypted. The problem is that, with the rapid progress in computing technology, the encrypted data will not be secure any more after a few years. Once the data are decrypted, all secret will be leaked. To solve this problem, in this paper we propose a new way to increase the information security through integration of data compression and cryptography. Specifically, the data to be considered here are images, and the compression technique is the k-PCA, which was proposed by us recently for image compression. The main advantage of using k-PCA is that this technique is data-dependent. Unlike other existing universal compression techniques, such as DCT, DWT, and so on, the non-linear transformation function used in k-PCA are found using the data to be compressed. Thus, even if the encrypted data are deciphered by some malicious persons, it is hard for them to reconstruct the images without the transformation function, which is encrypted and kept by the user as a secret key. To encrypt the compressed data and the transformation function, we can use any existing techniques, as long as they are relatively secure.
Context-Aware Visual Exploration of Molecular Datab
Authors: Giuseppe Di Fatta, Antonino Fiannaca, Riccardo Rizzo, Alfonso Urso, Michael R. Berthold, Salvatore Gaglio
Venue: Proceedings of the Sixth IEEE International Conference on Data Mining - Workshops (2006)

Facilitating the visual exploration of scientific data has received increasing attention in the past decade or so. Especially in life science related application areas the amount of available data has grown at a breath taking pace. In this paper we describe an approach that allows for visual inspection of large collections of molecular compounds. In contrast to classical visualizations of such spaces we incorporate a specific focus of analysis, for example the outcome of a biological experiment such as high throughout screening results. The presented method uses this experimental data to select molecular fragments of the underlying molecules that have interesting properties and uses the resulting space to generate a two dimensional map based on a singular value decomposition algorithm and a selforganizing map. Experiments on real datasets show that the resulting visual landscape groups molecules of similar chemical properties in densely connected regions.
Wavelet encoding of BRDFs for real-time rendering
Authors: Luc Claustres, Loïc Barthe, Mathias Paulin
Venue: Proceedings of Graphics Interface 2007 (2007)

Acquired data often provides the best knowledge of a material's bidirectional reflectance distribution function (BRDF). Its integration into most real-time rendering systems requires both data compression and the implementation of the decompression and filtering stages on contemporary graphics processing units (GPUs). This paper improves the quality of real-time per-pixel lighting on GPUs using a wavelet decomposition of acquired BRDFs. Three-dimensional texture mapping with indexing allows us to efficiently compress the BRDF data by exploiting much of the coherency between hemispherical data. We apply built-in hardware filtering and pixel shader flexibility to perform filtering in the full 4D BRDF domain. Anti-aliasing of specular highlights is performed via a progressive level-of-detail technique built upon the multiresolution of the wavelet encoding. This technique increases rendering performance on distant surfaces while maintaining accurate appearance of close ones.
Pipeline Processing of Multi-Way Queries in Shared-Memory Systems
Authors: Kian-Lee TAN, Hongjun LU
Venue: Proceedings of the 1993 International Conference on Parallel Processing - Volume 01 (1993)

This paper explores the pipeline processing of multi-way join queries using hash-based join algorithm. The basic approach that has been adopted in the literature is: "split" the join tree into segments and for each segment, split each base rela tion into buckets and pipeline the segment using the buckets. The effectiveness of the approach depends on two closely related factors - the number of buckets and the number of segments. We investigate how varying these factors may affect the system performance. Two greedy heuristics, proposed to generate query evalua tion plans with "optimal" pipeline length, are shown to perform best in most cases.
The drive to create: an investigation of tools to support disabled artists
Authors: Dharani Priyahansika Perera, Jim R. T. Eales, Kathy Blashki
Venue: Proceedings of the 6th ACM SIGCHI conference on Creativity cognition (2007)

For people with upper limb disabilities visual art is an important activity that allows for expression of individuality and independence. Through a series of case studies we illustrate the struggles faced by people with upper limb disabilities to be creative. They show remarkable endurance, patience and determination to adapt their remaining capabilities to create visual art. The case studies also show the significant advantages of digital technologies in assisting artists with upper limb disabilities. We discuss the implication of alternative and/or multimodal interactions as possible assistive technologies for creating visual art. A prototype is under development to investigate the possibilities of paralinguistic voice as a mode of creating visual art.
Undergraduate engineering students as mentors in an inner-city high school: a pilot program
Authors: J. McGourty
Venue: Proceedings of the 30th Annual Frontiers in Education - Volume 01 (2000)

The paper describes a pilot program and intervention implemented in a Harlem high school in New York City during the Summer of 1999. A group of engineering undergraduates worked with over 150 9th graders to improve their skills in mathematics. The pilot is part of an ongoing study investigating the feasibility of recruiting engineering graduates to work in urban school systems.
Three-dimensional lifting schemes for motion compensated video compression
Authors: B. Pesquet-Popescu
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2001. on IEEE International Conference - Volume 03 (2001)

Three-dimensional wavelet decompositions are efficient tools for scalable video coding. We show a lifting formulation for these decompositions. The temporal wavelet transform is inherently nonlinear, due to the motion estimation step, and the lifting formalism allows us to provide several improvements to the scheme initially proposed by Choi and Woods: a better processing of the uncovered areas is proposed and an overlapped motion-compensated temporal filtering method is introduced in the multiresolution decomposition. As shown by simulations, the proposed method results in higher coding efficiency, while keeping the scalability functionalities.
A Simple Gray Code to List All Minimal Signed Binary Representations
Authors: J. Sawada
Venue: SIAM Journal on Discrete Mathematics (2007)

A signed binary representation (SBR) of an integer $N$ is a string $a_b\cdots a_2a_1a_0$ over the alphabet $\{-1,0,1\}$ such that $N = \sum_{i=0}^b a_i2^i$. An SBR of an integer $N$ is said to be minimal if the number of nonzero digits is minimum. In this paper, we describe a simple 3-close Gray code for listing all minimal SBRs of an integer $N$. The algorithm is implemented to run in constant amortized time. In addition, we identify the values for $N$ that have the maximum number of minimal SBRs given the length of the binary representation of $N$.
Sigma filter based unsupervised color image segmentation
Authors: M. J. T. Smith
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 04 (2000)

In this paper, we present an unsupervised color image segmentation algorithm. By first processing a color image via the proposed color sigma filter, pixels within the same semantic region become more concentrated around their centroid in the perceptual color coordinate system. A k-mean algorithm is then designed to automatically differentiate the image into non-overlapping semantic objects. Because of the periodicity in the hue component, we apply two manifolds to completely cover the hue vector, and fuse distinguished regions from both manifolds to obtain the final image segmentation. The computational complexity of our algorithm is O(N), where N is the total number of pixels, and no priori information is assumed. We provide examples to illustrate the performance of our procedure.
A first step for women into the engineering pipeline
Authors: R. Cano
Venue: Proceedings of the Frontiers in Education Conference, 2001. on 31st Annual - Volume 01 (2001)

Girls and boys enter school roughly equal in measured ability. They start off alike in mathematics and science performance and interest in school, and appear to do equally well in both subjects in elementary school. As girls progress from middle school into high school and college, they become a steadily decreasing segment of the "scientific and mathematical talent pool". To help counteract the disadvantage girls experience, NJIT offered the Women In Engineering & Technology-FEMME program in 1981. FEMME provided post ninth grade girls with activities in problem solving skills, science, mathematics, engineering and technology (SMET), during four-weeks in the summer and academic year workshops. Later research demonstrated that earlier intervention was crucial and girls should receive SMET enrichment and motivation prior to middle school. Therefore, in 1993, FEMME was expanded to include fourth and fifth graders and today NJIT's initiatives are designed to enhance fourth through ninth grade girls' skills.