ppxscal/embedding_network huggingface dataset:
Getting Started with SAS/ASSIST 9.1
Authors: SAS Publishing
Venue:  (2008)

SAS/ASSIST software enables you to complete tasks more efficiently by providing templates to help you get started. Using this guide and SAS/ASSIST software's point-and-click interface to SAS, you will quickly learn to produce reports and graphics, perform data entry, editing, and analysis, set up SAS files, enter data interactively, use the Report engine, use remote connect, and more. Experienced users can benefit from the concise descriptions of aspects of SAS with which they might not be familiar. This title is designed for users who have some computer experience but who are new to SAS/ASSIST software, SAS, or both.
Performance of Multiband OFDM Systems with Extra Diversity
Authors: Jee-Hyun Kim, Sang-Tae Kim, Hyoung-Kyu Song, Young-Hwan You
Venue: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (2008)

This letter presents the performance of ultra-wideband multi-band orthogonal frequency division multiplexing (UWB MB-OFDM) systems with an extra diversity. To fully obtain diversity gain in the current MB-OFDM system when a time-domain spreading (TDS) is adopted, two consecutive OFDM symbols are designed to be cyclic shifted against each other. Simulation results indicate that the MB-OFDM system using additional frequency diversity outperforms conventional MB-OFDM system.
Distributed Loop Controller for Multithreading in Unithreaded ILP Architectures
Authors: Praveen Raghavan, Andy Lambrechts, Murali Jayapala, Francky Catthoor, Diederik Verkest
Venue: IEEE Transactions on Computers (2009)

Reduced energy consumption is one of the most important design goals for embedded application domains like wireless communication, multimedia and biomedical applications. The instruction memory hierarchy has been proven to be one of the most power hungry parts of the system. This paper introduces an architectural enhancement for the instruction memory to reduce energy consumption and improve performance. The proposed distributed instruction memory organization requires minimal hardware overhead and supports the execution of multiple incompatible loops in parallel in a uni-processor system. We present different methods to implement the loop controller architecture, compare them, and show that distributing the instruction memory helps to reduce the interconnect cost as well. This architecture enhancement can reduce the energy consumed in the instruction memory hierarchy by 59% and improve the performance by 22% compared to hardware based enhanced SMT based architectures.
A Linear Kernel for the k-Disjoint Cycle Problem on Planar Graphs
Authors: Hans L. Bodlaender, Eelko Penninkx, Richard B. Tan
Venue: Proceedings of the 19th International Symposium on Algorithms and Computation (2008)

We consider the following problem: given a planar graph G = (V,E) and integer k, find if possible at least k vertex disjoint cycles in G. This problem is known to be NP-complete. In this paper, we give a number of simple data reduction rules. Each rule transforms the input to an equivalent smaller input, and can be carried out in polynomial time. We show that inputs on which no rule can be carried out have size linear in k. Thereby we obtain that the k -Disjoint Cycles problem on planar graphs has a kernel of linear size. We also present a parameterized algorithm with a running time of $O(c^{\sqrt{k}} + n^2)$.
Teaching research and practice of data structure based on knowledge structure
Authors: Gu Yue-sheng, Zhu Ji-yi
Venue: Proceedings of the 1st ACM Summit on Computing Education in China on First ACM Summit on Computing Education in China (2008)

Firstly, this paper studies the status of Data Structure in the courses for Computer Science and Technology specialty and its knowledge structure. Then, teaching method based on knowledge structure is proposed to raise students' motivation, to organize teaching contents reasonably, to select topic scientifically, and so forth. At last, some statistic data of teaching practice are shown to prove this.
Investigation of public's perception towards rural sustainable development based on a two-level expert system
Authors: Y. P. Cai, G. H. Huang, Z. F. Yang, W. Sun, B. Chen
Venue: Expert Systems with Applications: An International Journal (2009)

Sustainable development is of great significance in rural areas of China, which are under coupled pressures of poverty reduction, environmental protection and economic development. In these areas, agriculture is the primary sector in supporting their economies, where a number of the relevant production and processing practices cause many adverse impacts on environment and ecosystem. This poses many challenges for decision makers in formulating sustainable development strategies without invoking potential controversies or objections from the public. In this study, a two-level expert system (TES) for facilitating the investigation of public's perception towards sustainable development in rural areas was developed. Interactive relationships among objectives of socio-economic development and environmental protection, as well as the related policy implications and public responses, were comprehensively examined and incorporated within TES. A two-level system was particularly adopted for facilitating participation of various stakeholders, including decision makers and farmers. The Yongxin County of the Shanjianghu Region in Jiangxi Province, China was selected to demonstrate the applicability of the developed TES. A series of questionnaire surveys were conducted both for acquiring knowledge about the interrelationships among sustainable development, agricultural production, poverty reduction and environmental protection. Public's perception towards various system components of rural sustainable development were efficiently acquired and analyzed. The results indicated that sustainable development would be very significant on rural areas in China. Also, public awareness to the concept and profile of rural sustainable development was still at a low level, especially for farmers. The developed TES can be not only used for acquiring knowledge of sustainable development, but also providing basic information for the formulation of relevant policies and strategies in rural areas of China.
Improving the performance and functionality of Mondrian open-source OLAP systems
Authors: Pablo Sendín-Raña, Francisco J. González-Castaño, Enrique Pérez-Barros, Pedro S. Rodríguez-Hernández, Felipe Gil-Castiñeira, José M. Pousada-Carballo
Venue: Software&mdash;Practice Experience (2009)

For a long time, the design of relational databases has focused on the optimization of atomic transactions (insert, select, update or delete). Currently, relational databases store tactical information of data warehouses, mainly for select-like operations. However, the database paradigm has evolved, and nowadays on-line analytical processing (OLAP) systems handle strategic information for further analysis. These systems enable fast, interactive and consistent information analysis of data warehouses, including shared calculations and allocations. OLAP and data warehouses jointly allow multidimensional data views, turning raw data into knowledge. OLAP allows &lsquo;slice and dice&rsquo; navigation and a top-down perspective of data hierarchies. In this paper, we describe our experience in the migration from a large relational database management system to an OLAP system on top of a relational layer (the data warehouse), and the resulting contributions in open-source ROLAP optimization. Existing open-source ROLAP technologies rely on summarized tables with materialized aggregate views to improve system performance (in terms of response time). The design and maintenance of those tables are cumbersome. Instead, we intensively exploit cache memory, where key data reside, yielding low response times. A cold start process brings summarized data from the relational database to cache memory, subsequently reducing the response time. We ensure concurrent access to the summarized data, as well as consistency when the relational database updates data. We also improve the OLAP functionality, by providing new features for automating the creation of calculated members. This makes it possible to define new measures on the fly using virtual dimensions, without re-designing the multidimensional cube. We have chosen the XML-A de facto standard for service provision. Copyright &copy; 2008 John Wiley & Sons, Ltd.
Comparison on Gradient-Based Neural Dynamics and Zhang Neural Dynamics for Online Solution of Nonlinear Equations
Authors: Yunong Zhang, Chenfu Yi, Weimu Ma
Venue: Proceedings of the 3rd International Symposium on Advances in Computation and Intelligence (2008)

For online solution of nonlinear equation f(x) = 0, this paper generalizes a special kind of recurrent neural dynamics by using a recent design method proposed by Zhang et al. Different from gradient-based dynamics (GD), the resultant Zhang dynamics (ZD) is designed based on the elimination of an indefinite error-monitoring function (instead of the elimination of a square-based positive error-function usually associated with GD). For comparative purposes, the gradient-based dynamics is also developed and exploited for solving online such a nonlinear equation f(x) = 0. Computer-simulation results via power-sigmoid activation functions substantiate further the theoretical analysis and efficacy of Zhang neural dynamics on nonlinear equations solving.
Continuous and Discrete Clebsch Variational Principles
Authors: C. J. Cotter, D. D. Holm
Venue: Foundations of Computational Mathematics (2009)

The Clebsch method provides a unifying approach for deriving variational principles for continuous and discrete dynamical systems where elements of a vector space are used to control dynamics on the cotangent bundle of a Lie group via a velocity map. This paper proves a reduction theorem which states that the canonical variables on the Lie group can be eliminated, if and only if the velocity map is a Lie algebra action, thereby producing the Euler&#x2013;Poincar&#x00e9; (EP) equation for the vector space variables. In this case, the map from the canonical variables on the Lie group to the vector space is the standard momentum map defined using the diamond operator. We apply the Clebsch method in examples of the rotating rigid body and the incompressible Euler equations. Along the way, we explain how singular solutions of the EP equation for the diffeomorphism group (EPDiff) arise as momentum maps in the Clebsch approach. In the case of finite-dimensional Lie groups, the Clebsch variational principle is discretized to produce a variational integrator for the dynamical system. We obtain a discrete map from which the variables on the cotangent bundle of a Lie group may be eliminated to produce a discrete EP equation for elements of the vector space. We give an integrator for the rotating rigid body as an example. We also briefly discuss how to discretize infinite-dimensional Clebsch systems, so as to produce conservative numerical methods for fluid dynamics.
A Lower Bound for Scheduling of Unit Jobs with Immediate Decision on Parallel Machines
Authors: Tomáš Ebenlendr, Jiří Sgall
Venue: Approximation and Online Algorithms: 6th International Workshop, WAOA 2008, Karlsruhe, Germany, September 18-19, 2008. Revised Papers (2009)

Consider scheduling of unit jobs with release times and deadlines on m identical machines with the objective to maximize the number of jobs completed before their deadlines. We prove a new lower bound for online algorithms with immediate decision. This means that the jobs arrive over time and the algorithm has to decide the schedule of each job immediately upon its release. Our lower bound tends to e/(e&thinsp;&minus;&thinsp;1)&thinsp;&asymp;&thinsp;1.58 for many machines, matching the performance of the best algorithm.
Second-order time evolution of PN equations for radiation transport
Authors: Gordon L. Olson
Venue: Journal of Computational Physics (2009)

Using polynomials to represent the angular variation of the radiation intensity is usually referred to as the PN or spherical harmonics method. For infinite order, the representation is an exact solution of the radiation transport solution. For finite N, in some physical situations there are oscillations in the solution that can make the radiation energy density be negative. For small N, the oscillations may be large enough to force the material temperature to numerically have non-physical negative values. The second-order time evolution algorithm presented here allows for more accurate solutions with larger time steps; however, it also can resolve the negativities that first-order time solutions smear out. Therefore, artificial scattering is studied to see how it can be used to decrease the oscillations in low-order solutions and prevent negativities. Small amounts of arbitrary, non-physical scattering can significantly improve the accuracy of the solution to test problems. Flux-limited diffusion solutions can also be improved by including artificial scattering. One- and two-dimensional test results are presented.
Remote sensing of atmospheric particles using LIDAR, Calipso satellite, & AERONET: algorithm development
Authors: Javier Mèndez, Hamed Parsiani, Emmanuel Sanchez
Venue: WSEAS TRANSACTIONS on SYSTEMS (2009)

Algorithms have been developed for the determination of essential parameters such as Aerosol Size Distribution, Angstrom coefficient, and Single Scattering Albedo necessary in the determination of regional climatological model and weather prediction capabilities. The atmospheric power profile data for the calculations of these parameters have been obtained from Light Detection And Ranging (LIDAR) which is operational at City University of New York (CUNY). A similar system is near completion at the University of Puerto Rico at Mayaguez (UPRM). Also, the data from the Lidar in the orbit (CALIPSO satellite) has been used to calculate the Aerosol Optical Depth (AOD) for the western part of Puerto Rico and compare it to the AOD obtained from an AERONET network which is also located in the western region of Puerto Rico. The Calipso Lidar satellite transmits laser and collects backscattered light at two standard wavelengths (one wavelength at two polarizations). The AERONET network is a complementary method of determining the Optical Depth of the aerosol. The three aforementioned systems operate based on multiple wavelength laser light transmission and reception. Each system is explored in this paper, and full emphasis is given to the Lidar system which presently is near operation at the UPRM, explaining the functionality of the Laser, optical telescope, optics, sensors, signal processing systems, the power profile reflected from the aerosols are obtained at standard wavelengths of 355, 532, and 1064nms, both at CUNY and UPRM. The plots of aerosol distribution in the column of atmosphere in terms of the essential aerosol parameters have been produced using the Lidar data over New York urban area.
COS: client oriented scheduling for multi-channel on-demand broadcast
Authors: Kai Liu, Victor C. S. Lee
Venue: Proceedings of the 3rd International Conference on Ubiquitous Information Management and Communication (2009)

On-demand broadcast is an effective data dissemination approach in mobile computing. Recently, a large number of mobile applications have been developed in broadcast systems equipped with multiple channels. Therefore, it becomes a critical performance consideration for the underlying scheduling algorithm to utilize bandwidth efficiently in multi-channel on-demand broadcast environments. However, we find that existing scheduling algorithms fail to utilize bandwidth efficiently in this new environment and it results in a poor system performance. In this paper, we examine this bandwidth utilization problem. Based on the observation, we propose a bandwidth-efficient scheduling algorithm called COS in multi-channel on-demand broadcast environments. Results from our simulation study demonstrate the superiority of COS.
Modeling of Selective Carbon Nanotubes Growth for Non-classical Memory Applications
Authors: Satyender Goel, Artëm E. Masunov
Venue: Proceedings of the 2009 Third International Conference on Quantum, Nano and Micro Technologies (2009)

Single wall carbon nanotubes (SWNT) have unique properties that make them potentially useful in wide variety of applications in nanoelectronics. However, these applications are feasible only if SWNTs have specific chirality. Therefore optimization of experimental conditions for Chemical Vapor Deposition (CVD) growth of SWNT in order to increase its selectivity is of great practical importance. This rational optimization is impossible without knowledge of mechanistic kinetics of CVD. It is not probably feasible to extract the information on mechanism for SWNT synthesis from experimental data. The chemical origin of the reaction barriers and intermediates, however, could be analyzed using molecular simulations. Here we propose multiscale computer modeling of CVD process. Our approach is to extract the structure of the intermediates from molecular dynamics trajectories, conduct the transition state search, predict the free energy activation barriers, build the kinetic model of the growth process, and implement it in kinetic Monte Carlo algorithm to predict the optimal experimental conditions necessary to produce desired chirality of SWNT.
Interactive 3D Web-Based Environments for Online Learning: Case Studies, Technologies and Challenges
Authors: Felix G. Hamza-Lup, Priya T. Goeser, Wayne Johnson, Tina Thompson, Elena Railean, Dorin M. Popovici, Georgiana Hamza-Lup
Venue: Proceedings of the 2009 International Conference on Mobile, Hybrid, and On-line Learning (2009)

Interactive simulations and virtual environments can play a significant role in facilitating learning through engagement, immediate feedback and by providing real-world contexts. Interactive 3D interfaces have a significant impact on the user interface usability and interactivity. We present several case-studies that have evolved from actual teaching observations and have been implemented using undergraduate and graduate student research teams. The development of such simulators poses multidisciplinary research challenges and has the advantage of bringing together a diverse group of people with complementary expertise. We present case studies covering engineering, medical sciences, physics and chemistry.
Virtual functions of the space-time finite element method in moving mass problems
Authors: Czesław I. Bajer, Bartłomiej Dyniewicz
Venue: Computers and Structures (2009)

Classical time integration schemes fail in vibration analysis of complex problems with moving concentrated parameters. Moving mass problems and moving support problems belong to this group. Commercial systems of dynamic simulations do not support such an analysis. Moreover, the classical finite element method with the Newmark-type time integration method does not allow us to obtain convergent results at all. The reason lies in the impossibility of full mathematical consideration of the time integration stage and the analysis of inertial terms of a travelling mass. Both of them, unfortunately, are decoupled. In this paper we propose an efficient and exact numerical approach to the problem by using the space-time finite element method. We derive characteristic matrices of the discrete element of the string and the Bernoulli-Euler beam that carry the concentrated mass. We present four types of virtual functions in time and we apply two of them to the practical analysis. Displacements in time obtained numerically are compared with semi-analytical results. Almost perfect coincidence proves the efficiency of the approach.
Electronic message system as a function in the integrated electronic office
Authors: Harold E. O'Kelley
Venue: Proceedings of the May 19-22, 1980, national computer conference (1980)

The fully integrated electronic office is composed of six fundamental elements, or functions: Dispersed Data Processing Communications Management Word Processing Electronic Message System Individual Computing Information Storage and Retrieval
Business Data Communications and Networking, 8th edition
Authors: Jerry Fitzgerald, Alan Dennis
Venue:  (2007)

Over the past few years, many fundamental changes have occurred in data communications and networking that will shape the future for decades to come. Updated with the latest advances in the field,Jerry FitzGerald and Alan Dennis' 10th Edition of Business Data Communications and Networking continues to provide the fundamental concepts and cutting-edge coverage applications that students need to succeed in this fast-moving field. Authors FitzGerald and Dennis have developed a foundation and balanced presentation from which new technologies and applications can be easily understood, evaluated, and compared.
Numerical Analysis of Two-bundled Conductor Aeolian Vibrations with Spacer Dampers
Authors: Deyi Kong, Li Li, Xiaohong Long
Venue: Proceedings of the 2009 International Conference on Electronic Computer Technology (2009)

Spacer dampers are attached on the bundled conductors to suppress aeolian vibrations for many decades. In present study a new aeolian excitation induced by shed vortex had been derived base on wind power equivalent principle; the spatial distribution and the wind power input can be considered. The two-bundled conductor with spacer dampers attached is simplified to the mass-spring-dampers modle; dynmic equation could be obtained by d’Alembert’s principle. The fourth-order finite difference scheme is derived to predict the vertical; steady-state; monofrequent aeolian vibration of bundled conductor with or without spacer dampers, and the displacement amplitude and dynamic bending strain of conductor could be obtained by using the iterative methods. Take 220kV two-bundled conductor as an example; the conductor with and without spacer dampers were computed by energy balance method and present model respectively. Results prove that spacers can restrain conductor aeolian vibration by means of choosing appropriate clamp damping and stiffness and the effect of interaction between two sub-conductors can be taking into account by present method.
DAVID-E: A Collaborative Working Paradigm for Distributed High-End Audio-Visual Content Creation
Authors: Antonis Karidis, Apostolos Meliones
Venue: Proceedings of the 1999 IEEE International Conference on Multimedia Computing and Systems - Volume 02 (1999)

In the recent years the world has witnessed an unprece-dented expansion in the global audio-visual industry and actions have been initiated to strengthen its actors, espe-cially in filmmaking and video production. Companies seeking ways to improve their performance and produc-tivity and become more competitive are investing in mod-ern digital technologies. Very powerful high-perform-ance comput-ing systems are found today even in small produc-tion fa-cilities. Yet, little effort has been used to implement activi-ties other than production/post-produc-tion and even less, to integrate the whole cycle of content development and creation within a networked collabora-tive environ-ment. This paper reports the experience of the DAViD project aiming to establish ways to interact and collabo-rate dur-ing pre-production phases. Several bene-fits have been demonstrated, such as reduction of the overall pro-duction time and cost, increased productivity and in-creased ability to execute complex, multi-company pro-ductions in shorter times and lower budgets.