ppxscal/embedding_network huggingface dataset:
The basics of methodology for estimation and choosing parameters of multi-service telecommunication systems
Authors: Vladimir L. Shirokov
Venue: Proceedings of the 2nd International Conference on Dependability of Computer Systems (2007)

Aim of this paper is presentation of operating of Multi-Service Telecommunication Systems (MSTS) [1], which have the star or multi-star structure, considering parameters, which influence on system productivity, creating of functional and mathematical models, designing of basics methodology and methods, which are necessary for quicker automated modeling, estimation and choosing parameters of MSTS on earlier stages of their creation, construction or modernization. These MSTSs are oriented on different information exchange (data, voice and video) in regional or Metropolitan Area Networks (MANs) for transmission of information between subscribers, Local and Wide Area Networks (LAN, WAN). So MSTS is the core of MAN which has big size (radius) for multi-service information exchange and where is need to consider too large loading. This paper includes the estimation methods and mathematical model of MSTS's operating, performance and efficiency. The outline method [2] is used to describe the different services and allows considering the data transmission, Internet access, telephone messages, and video/audio multicast. The mathematical modeling is applying for performance and the system's cost for accounting. The loading balancing is making by using of the ravine method [3]. Implementing this methodology any engineer can get the real system's parameters and channel's configurations of core MSTS, which reflect a real exchange processes.
A High-Level Reference Model for Reusable Object-Level Coordination Support in Groupware Applications
Authors: Miguel A. Gomez-Hernandez, Juan I. Asensio-Perez, Eduardo Gomez-Sanchez, Miguel L. Bote-Lorenzo, Yannis A. Dimitriadis
Venue: Proceedings of the 15th Euromicro International Conference on Parallel, Distributed and Network-Based Processing (2007)

The success of groupware software largely depends on its capability for being reused in different collaborative scenarios without requiring significant software development efforts or user technical involvement. During the last decade several toolkits, frameworks, and specialized middleware software layers have been proposed as potential solutions to the groupware reusability problem. Those solutions cover common groupware functionality such as group formation and management, group awareness, shared workspace management, etc. This paper is focused on the reusable support to one of these common functionalities: the so-called object-level coordination that deals with multiple participants' sequential or simultaneous access to the same set of shared objects in a collaborative setting. The paper compares existing object-level coordination proposals and analyzes their capabilities and level of reuse. Starting from that analysis, and using a bottom-up approach, the paper also proposes a high-level reference model that identifies the desirable set of required functional elements, as well as their relationships, that reusable object-level coordination support should contain. The purpose of this reference model is twofold: to be used as a comparison framework for analyzing existing or yet-to-come object-level coordination building blocks; and, to be used as a starting point for developing new object-level coordination solutions (or redesigning existing ones) satisfying the whole set of requirements implicitly collected in the model. In addition to detailing the proposed reference model, the paper also illustrates and discusses both potential ways of using it.
Enhanced Mobility Management Modelling Framework
Authors: Peter Fulop, Benedek Kovacs
Venue: Proceedings of the 6th International Conference on Computer Information Systems and Industrial Management Applications (2007)

This paper investigates mobility management strategies from the point of view of their need of signalling and processing resources on the backbone network and load on the air interface. A method is proposed to model the serving network and mobile node mobility in order to be able to model the different types of mobility management algorithms. To obtain a good description of the network we calculate parameters from given topologies that we think are the most important ones. Mobility approaches derived from existing protocols and other, possible mobility scenarios are analyzed and their performance is numerically compared in various network and mobility scenarios. The aim is to give general designing guidelines for the next generation mobility managements on given network and mobility properties.
Using multimedia and the Web to teach the theory of digital multimedia signals
Authors: M. A. Yoder, J. H. McClellan, R. W. Schafer
Venue: Proceedings of the Frontiers in Education Conference, on 1995. Proceedings., 1995 - Volume 02 (1995)

The paper is about using multimedia via the World Wide Web in a course that teaches the theory behind digital audio and video. New course materials accessible via the Web are now used by students to explore demos that were presented in class. At Georgia Tech (and soon Rose-Hulman) a relatively new course that teaches the fundamentals of discrete signal processing (DSP) to sophomores is now required of computer engineering majors. Because DSP is involved in every aspect of multimedia information signals (coding, transmission, storage, playback etc.) the numerous in-class demos and all of the labs relate to the creation or analysis of sounds or images via computer. The course is structured so that the classroom time is used to explain theory, which is then implemented in lab to explore a given concept (e.g., sampling rates) or carry out a small design (e.g., write a MATLAB program to produce a sequence of sinusoidal waveforms that when sent to a speaker will play a song such as Ramblin' Wreck). Traditionally, reading and homework assignments provide a link between lectures and labs. In this course the lecture/lab gap is closed via follow-up demos that are run by the students via the Web. Labs are assigned that require the students to run demos that illustrate and reinforce concepts introduced in the lecture. The homework assignments are designed to help the students to make the transition from the overview/demo mode to the implementation/lab mode. This leads them to implement something via MATLAB to test their answer.
Interactive presentation: Hard- and software modularity of the NOVA MPSoC platform
Authors: Christian Sauer, Matthias Gries, Sebastian Dirk
Venue: Proceedings of the conference on Design, automation and test in Europe (2007)

The Network-Optimized Versatile Architecture Platform (NOVA) encapsulates embedded cores, tightly and loosely coupled coprocessors, on-chip memories, and I/O interfaces by special sockets that provide a common packet passing and communication infrastructure. To ease the programming of the heterogeneous multiprocessor target for the application developer, a component based framework is used for describing packet processing applications in a natural and productive way. Leveraging identical application and hardware communication semantics, code generators and off-the-shelf tool chains can automate the software implementation process. Using a prototype with four processing cores we quantify the overhead of modularity and programmability for the platform.
Experiments and modeling of perceived speech quality of long samples
Authors: Xiang-Chun Tan
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 200. on IEEE International Conference - Volume 02 (2001)

Speech quality in cellular networks may vary significantly over time. Accessing the perceived speech quality aggregated over time, such as for an entire conversation, is desired to ensure customer satisfaction. Calculating average quality using common objective methods, which normally determine quality for short speech samples, has drawbacks. Subjective listening tests with long speech segments show that the perceived quality differs from the average quality calculated from a series of objective measurements. The overall perceived quality is affected by the brain's "ability" to forget and, hence, the last 30 to 40 s of speech form the basis for the subjective quality.
Automated Software Product Line Engineering and Product Derivation
Authors: Hassan Gomaa, Michael E. Shin
Venue: Proceedings of the 40th Annual Hawaii International Conference on System Sciences (2007)

This paper describes a prototype automated software product line engineering environment, in which a multiple view model of the product line architecture and components are developed and stored in a product line repository. Automated software product derivation consists of tailoring the product line architecture given the product features and selecting the components to be included in the product. The automated environment is built on top of Rational Rose RT. Automated support is provided for developing multiple product line views, using the feature model as the unifying view, an underlying product line meta-model that provides a schema for a product line repository, support for consistency checking among the multiple views, and support for feature-based product line derivation.
CoolEdit
Authors: Paul Sheer
Venue: Proceedings of the 3rd annual conference on Atlanta Linux Showcase - Volume 3 (1999)

CoolEdit is a full featured text editor for the X Window System. It is built around its own widget library written directly in XLib. It has a builtin Python interpretor for macro programming, syntax highlighting for many programming languages, a comprehensive interface to gdb, and generic interfaces to compilers and text processing utilities. It has an elegant 3D multiple window interface, and is light and fast.
Flexible hardware reduction for elliptic curve cryptography in GF(2m)
Authors: Steffen Peter, Peter Langendörfer, Krzysztof Piotrowski
Venue: Proceedings of the conference on Design, automation and test in Europe (2007)

In this paper we discuss two ways to provide flexible hardware support for the reduction step in Elliptic Curve Cryptography in binary fields (GF(2m)). In our first approach we are using several dedicated reduction units within a single multiplier. Our measurement results show that this simple approach leads to an additional area consumption of less than 10% compared to a dedicated design without performance penalties. In our second approach any elliptic curve cryptography up to a predefined maximal length can be supported. Here we take advantage of the features of commonly used reduction polynomials. Our results show a significant area penalty compared to dedicated designs. However, we achieve flexibility and the performance is still significantly better than those of known ECC hardware accelerator approaches with similar flexibility or even software implementations.
On the convolution of Pareto and gamma distributions
Authors: Saralees Nadarajah, Samuel Kotz
Venue: Computer Networks: The International Journal of Computer and Telecommunications Networking (2007)

It is well established that the burst and idle times for on/off traffic are modeled by the Pareto and gamma distributions, respectively. Thus, the inter arrival times between on-traffic (off-traffic) is the convolution of Pareto and gamma random variables. In this note, we derive exact expressions for the probability density function of the inter arrival times. A computer program and tabulations of the associated percentage points are also provided.
Locating Anatomical Points on Foot from 3D Point Cloud Data
Authors: Jianhui Zhao, Ravindra S. Goonetilleke
Venue: Proceedings of the 16th International Conference on Artificial Reality and Telexistence--Workshops (2006)

Algorithms are proposed to automatically locate the foot anatomical points from scanned 3D point data based on a novel method that uses the pternion point for foot alignment, whereby variations in the different dimensions are minimized. The detected foot malleoli and arch point are used to classify the foot type. Based on the automatically detected anatomical points, 9 foot dimensions of 10 participants were determined and compared with manual measurements.
Evaluating User-centric Adaptation with Goal Models
Authors: Lin Mei, Steve Easterbrook
Venue: Proceedings of the 1st International Workshop on Software Engineering for Pervasive Computing Applications, Systems, and Environments (2007)

Capturing and adapting to the operational context of mobile users is one of the key properties of pervasive systems. Although some frameworks have been proposed for managing user-centric adaptation in pervasive computing, little work has been done on adaptivity evaluation. This paper proposes a framework for evaluating adaptive pervasive systems based on the viewpoint comparison between the potential users and the system design. In this framework, two types of goal models "system goal models" and "user goal models" are developed for the viewpoint comparison, two metrics "coverage" and "demand" are used for measuring the difference, and some principles are applied for identifying key features from the comparison. This paper also reports the result of a case study we conducted for evaluating the effectiveness of this framework.
Scaled hierarchical vector quantization
Authors: K. Panusopone
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 04 (1996)

A new technique to compress image data is introduced. Based on hierarchical properties of the tree structure, appropriate features can be drawn from specific region resulting in variable blocksize partitioning. To simplify the operation, the proposed scheme applies a scaling process to the derived feature. This scaling is similar to normalization of input vector to a unified dimension thereby a single codebook is used. This arrangement reduces complexity of the vector quantization (VQ) process dramatically. As a single pass algorithm, this VQ which uses image data in 3 regular sizes requires a minimal overhead. The simulation results show that this method not only decreases the search time but improves the quality of reconstructed images at low bit rates as well.
Diagnosing scrapie in sheep: A classification experiment
Authors: Ludmila I. Kuncheva, Victor J. del Rio Vilas, Juan J. Rodríguez
Venue: Computers in Biology and Medicine (2007)

Scrapie is a neuro-degenerative disease in small ruminants. A data set of 3113 records of sheep reported to the Scrapie Notifications Database in Great Britain has been studied. Clinical signs were recorded as present/absent in each animal by veterinary officials (VO) and a post-mortem diagnosis was made. In an attempt to detect healthy animals within the set of suspects using only the clinical signs, 18 classification methods were applied ranging from simple linear classifiers to classifier ensembles such as Bagging, AdaBoost and Random Forests. The results suggest that the clinical classification by the VO was adequate as no further differentiation within the set of suspects was feasible.
Access control in a world of software diversity
Authors: Martín Abadi, Andrew Birrell, Ted Wobber
Venue: Proceedings of the 10th conference on Hot Topics in Operating Systems - Volume 10 (2005)

We describe a new design for authentication and access control. In this design, principals embody a flexible notion of authentication. They are compound principals that reflect the identities of the programs that have executed, even those of login programs. These identities are based on a naming tree. Our access control lists are patterns that recognize principals. We show how this design supports a variety of access control scenarios.
A framework for mobile context-aware applications
Authors: S. Johnson
Venue: BT Technology Journal (2007)

This paper presents a framework for the rapid development of context-aware applications for mobile devices. We introduce the concept of a context fingerprint which is a characterisation of the context that a mobile terminal can determine from the sensors available to it. These sensors not only include the obvious RF transmitters such as Wi-Fi, GSM and Bluetooth, but also any device state information that is accessible through the operating system's APIs, such as device profile or battery level. The proposed framework allows a number of context fingerprints to be defined, together with events and actions that are fired on transition between contexts. Context-aware applications can be created simply by defining the key elements in a mark-up script that is loaded into an implementation of this framework.
Dos and don'ts of client authentication on the web
Authors: Kevin Fu, Emil Sit, Kendra Smith, Nick Feamster
Venue: Proceedings of the 10th conference on USENIX Security Symposium - Volume 10 (2001)

Client authentication has been a continuous source of problems on the Web. Although many well-studied techniques exist for authentication, Web sites continue to use extremely weak authentication schemes, especially in non-enterprise environments such as store fronts. These weaknesses often result from careless use of authenticators within Web cookies. Of the twenty-seven sites we investigated, we weakened the client authentication on two systems, gained unauthorized access on eight, and extracted the secret key used to mint authenticators from one. We provide a description of the limitations, requirements, and security models specific to Web client authentication. This includes the introduction of the interrogative adversary, a surprisingly powerful adversary that can adaptively query a Web site. We propose a set of hints for designing a secure client authentication scheme. Using these hints, we present the design and analysis of a simple authentication scheme secure against forgeries by the interrogative adversary. In conjunction with SSL, our scheme is secure against forgeries by the active adversary.
Efficient approximate implementations of the fast affine projection algorithm using orthogonal transforms
Authors: S. C. Douglas
Venue: Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 03 (1996)

The recently-introduced fast affine projection (FAP) adaptive filter has performance rivalling that of the RLS adaptive filter in many situations. However, the sliding-window RLS algorithm embedded within the FAP adaptive filter can be too complex to implement in some cases. We describe an alternate implementation of the FAP adaptive filter that uses orthogonal transforms to approximately calculate the affine projection. Simulations show that the performance of this simplified algorithm is nearly as good as the original algorithm when the transform is chosen properly. In addition, we provide a gradient step size (GSS) method for enhancing the performance of the FAP adaptive filter in nonstationary signal environments.
The Role of the Dorsolateral Prefrontal Cortex in Bimodal Divided Attention: Two Transcranial Magnetic Stimulation Studies
Authors: Jennifer Adrienne Johnson, Antonio P. Strafella, Robert J. Zatorre
Venue: Journal of Cognitive Neuroscience (2007)

The neural processes underlying the ability to divide attention between multiple sensory modalities remain poorly understood. To investigate the role of the dorsolateral prefrontal cortex (DLPFC) in bimodal divided attention, we completed two repetitive transcranial magnetic stimulation (rTMS) studies. We tested the hypothesis that the DLPFC is necessary in the ability to divide attention across modalities. This hypothesis originated as a result of a previous fMRI study in which the posterior DLPFC was active during a bimodal divided attention condition [Johnson, J. A., & Zatorre, R. J. Neural substrates for dividing and focusing attention between simultaneous auditory and visual events. Neuroimage, 2006]. In the current experiments, two separate groups of subjects underwent 10 min of slow rTMS to temporarily disrupt function of the DLPFC. In both groups, the ability to divide attention between unrelated auditory and visual stimuli decreased following DLPFC disruption compared to control site stimulation. Specifically, the ability to divide attention between modalities was hindered, leading to a pattern of behavior similar to bimodal selective attention (ability to attend to one or the other modality but not both). We discuss possible roles of the posterior DLPFC in bimodal divided attention and conclude that the area may be functioning to support the increased working memory load associated with divided, compared to selective attention.
Learning-based summarisation of XML documents
Authors: Massih R. Amini, Anastasios Tombros, Nicolas Usunier, Mounia Lalmas
Venue: Information Retrieval (2007)

Documents formatted in eXtensible Markup Language (XML) are available in collections of various document types. In this paper, we present an approach for the summarisation of XML documents. The novelty of this approach lies in that it is based on features not only from the content of documents, but also from their logical structure. We follow a machine learning, sentence extraction-based summarisation technique. To find which features are more effective for producing summaries, this approach views sentence extraction as an ordering task. We evaluated our summarisation model using the INEX and SUMMAC datasets. The results demonstrate that the inclusion of features from the logical structure of documents increases the effectiveness of the summariser, and that the learnable system is also effective and well-suited to the task of summarisation in the context of XML documents. Our approach is generic, and is therefore applicable, apart from entire documents, to elements of varying granularity within the XML tree. We view these results as a step towards the intelligent summarisation of XML documents.
Observing the effects of multi-zone disks
Authors: Rodney Van Meter
Venue: Proceedings of the annual conference on USENIX Annual Technical Conference (1997)

Current generations of hard disk drives use a technique known as zoned constant angular velocity (ZCAV), taking advantage of the geometry to increase total disk capacity by varying the number of disk sectors per track with the distance from the spindle. A side effect of this is that the transfer rate also varies with sector address. We analytically estimated and measured this effect on file system performance on a BSD Fast File System, showing a drop of roughly 25% in peak transfer rate depending on head position. We also show that, while ZCAV effects cannot be ignored, a simple linear model adequately estimates the performance from the few parameters normally available in disk drive spec sheets.
Frontiers In Education 1997
Venue: Proceedings of the Frontiers in Education Conference,1997. on 27th Annual Conference. Teaching and Learning in an Era of Change. - Volume 01 (1997)

Statistics are generally used to identify and address needs such as the inclusion of more women and minorities in engineering. In this paper, the authors synthesize the experiences of thirty-six engineers and six computer scientists in order to understand some of the positive and negative factors in these women's lives, and explore ways of teaching and advising in engineering schools that would allow the increasingly diverse student population to be better served. The students who reach college are a select group who have overcome the early barriers and are set on a potential track to becoming an engineer. College advisors and teachers need to reaffirm the methods and thinking these students have evolved, but which may be challenged by the system based on a "normative student" model. The authors present a theory that begins to explore these aspects. 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