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Identificação de plásticos comerciais por meio de um nariz eletrônico baseado em polímeros condutores.; Identification of plastics commercials through an electronic nose based on conducting polymers.

Martins, Gilmar Antonio dos Santos
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 07/04/2011 PT
Relevância na Pesquisa
45.77%
O presente trabalho consiste no desenvolvimento de uma nova técnica de identificação de materiais poliméricos por meio do uso de um nariz eletrônico. Narizes eletrônicos têm sido desenvolvidos para detecção automática e classificação de odores e gases. São instrumentos capazes de medir a concentração ou intensidade odorante de modo similar a um olfatômetro, mas sem as limitações inerentes ao uso de painel humano, o que é altamente desejável. O nariz eletrônico é composto por um sistema de sensores, no nosso caso, utilizamos um arranjo de quatro sensores, que foram confeccionados pela deposição de finos filmes de polímeros condutores dopados sobre a superfície de eletrodos interdigitados. Estes sensores foram conectados a condutivímetros acoplados a um computador de uso pessoal (PC) através de um conversor AD. O PC era dotado de softwares de aquisição e tratamento de dados. Amostras dos materiais a serem analisados foram aquecidas a 257°C e o arranjo de sensores foi exposto aos compostos voláteis produzidos durante esse aquecimento. Realizaram-se 30 ensaios formados por períodos de exposição (5 segundos; compostos voláteis) intercalados por períodos de recuperação (45 segundos; ar puro). Os dados obtidos foram tratados estatisticamente por Análises de Componentes Principais (PCA). Esse arranjo de sensores mostrou-se eficiente...

Impact of accelerometer data processing decisions on the sample size, wear time and physical activity level of a large cohort study

Keadle, Sarah Kozey; Shiroma, Eric J; Freedson, Patty S; Lee, I-Min
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
EN_US
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Background: Accelerometers objectively assess physical activity (PA) and are currently used in several large-scale epidemiological studies, but there is no consensus for processing the data. This study compared the impact of wear-time assessment methods and using either vertical (V)-axis or vector magnitude (VM) cut-points on accelerometer output. Methods: Participants (7,650 women, mean age 71.4 y) were mailed an accelerometer (ActiGraph GT3X+), instructed to wear it for 7 days, record dates and times the monitor was worn on a log, and return the monitor and log via mail. Data were processed using three wear-time methods (logs, Troiano or Choi algorithms) and V-axis or VM cut-points. Results: Using algorithms alone resulted in "mail-days" incorrectly identified as "wear-days" (27-79% of subjects had >7-days of valid data). Using only dates from the log and the Choi algorithm yielded: 1) larger samples with valid data than using log dates and times, 2) similar wear-times as using log dates and times, 3) more wear-time (V, 48.1 min more; VM, 29.5 min more) than only log dates and Troiano algorithm. Wear-time algorithm impacted sedentary time (~30-60 min lower for Troiano vs. Choi) but not moderate-to-vigorous (MV) PA time. Using V-axis cut-points yielded ~60 min more sedentary time and ~10 min less MVPA time than using VM cut-points. Conclusions: Combining log-dates and the Choi algorithm was optimal...

Digital data processing techniques for radar mapping.

Fonte: MIT Electronic Systems Laboratory Publicador: MIT Electronic Systems Laboratory
Formato: x, 139 p.; application/pdf
ENG
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Contract no. AF-33(615)-3227. Project DSR 76143.

Computer-aided processing of the news : second status report

Fonte: Massachusetts Institute of Technology, Dept. of Electrical Engineering, Electronic Systems Laboratory Publicador: Massachusetts Institute of Technology, Dept. of Electrical Engineering, Electronic Systems Laboratory
Formato: v, 18 p., [1] p. of folded plates; application/pdf
ENG
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55.71%
by J. Francis Reintjes, Richard S. Marcus.; Includes bibliographical references.; "May, 1968." "The research reported in this document was made possible through the support extended the Massachusetts Institute of Technology under a grant from the American Newspaper Publishers Association."; M.I.T. Project DSR 70149

Electronic Security : Risk Mitigation in Financial Transactions - Public Policy Issues

Glaessner, Thomas; Kellermann, Tom; McNevin, Valerie
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
EN_US
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This paper builds on a previous series of papers (see Claessens, Glaessner, and Klingebiel, 2001, 2002) that identified electronic security as a key component to the delivery of electronic finance benefits. This paper and its technical annexes (available separately at http://www1.worldbank.org/finance/) identify and discuss seven key pillars necessary to fostering a secure electronic environment. Hence, it is intended for those formulating broad policies in the area of electronic security and those working with financial services providers (for example, executives and management). The detailed annexes of this paper are especially relevant for chief information and security officers responsible for establishing layered security. First, this paper provides definitions of electronic finance and electronic security and explains why these issues deserve attention. Next, it presents a picture of the burgeoning global electronic security industry. Then it develops a risk-management framework for understanding the risks and tradeoffs inherent in the electronic security infrastructure. It also provides examples of tradeoffs that may arise with respect to technological innovation...

Supporting GHG Mitigation Actions with Effective Data Management Systems

Partnership for Market Readiness
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Trabalho em Andamento
EN_US
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The Partnership for Market Readiness (PMR) is a global partnership, which provides funding and technical assistance to support the design and development of market-based instruments to reduce greenhouse gas (GHG) emissions. The PMR is country-led and builds on countries own mitigation priorities. It emphasizes improving technical and institutional capacity to scale up mitigation efforts, including domestic emissions trading, crediting mechanisms and carbon taxes, among others. The report contains three parts. First, it provides an overview of the types of data management systems included in this analysis, namely, systems that support: (1) national level inventories, (2) facility-level reporting, and (3) carbon asset registries as well as other systems for clean energy and energy efficiency policies. The first part also provides a snapshot of four cases studies (the United Kingdom, Australia, the United States, Germany; Annexes to this report includes full descriptions of the case studies). Secondly, the report presents lessons learned from the case studies...

Federal regulation of automatic data processing and its effects on the Department of the Navy.

Shaw, Joe Leo
Fonte: George Washington University Publicador: George Washington University
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
55.81%
Electronic data processing equipment is playing an increasingly important role in the daily lives of every man and woman. This is particularly true of the men and women who serve in the Federal Government. The volume and complexity of the information processed by the Federal Government computers stagger the imagination. It would be physically impossible to carry out many Federal programs without electronic data processing equipment.

Planning the conversion to electronic data processing

Briggs, Douglas Wayne
Fonte: George Washington University Publicador: George Washington University
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
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This thesis document was issued under the authority of another institution, not NPS. At the time it was written, a copy was added to the NPS Library collection for reasons not now known. It has been included in the digital archive for its historical value to NPS. Not believed to be a CIVINS (Civilian Institutions) title.; As the leader and pioneer in the use of electronic data processing equipment, the Federal Government has slowly developed broad guidelines for planning for the utilization of electronic data processing equipment, and these guidelines are of value to an organization contemplating conversion to electronic data processing. This paper traces the development of the planning factors and considerations which sake up the requirements for conversion to electronic data processing. Most of the research material utilized was from surveys and studies conducted by the General Accounting Office, Bureau of the Budget, or the Department of the Navy. Detailed studies of specific problems of converting to electronic data processing encountered by firms in private industry were not available.

The Department of the Navy automatic data processing program as influenced by government-wide management policies.

Sabec, Edwin John
Fonte: George Washington University Publicador: George Washington University
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
55.73%
Approved for public release, distribution unlimited; This thesis document was issued under the authority of another institution, not NPS. At the time it was written, a copy was added to the NPS Library collection for reasons not now known.  It has been included in the digital archive for its historical value to NPS.  Not believed to be a CIVINS (Civilian Institutions) title.; The Federal Government has long been a leader in the field of automatic data processing, and is today the world's largest user of computers. The volume and complexity of the information processed by these computers are awesome . ·It would be physically impossible in this day and age to carry out many Federal programs without electronic data processing equipment.; Commander, Supply Corps, United States Navy

Uma Estratégia para Publicação de um Linked Open Data Baseado em Data Warehouse

Oliveira, Davison André Zangerolami de
Fonte: Universidade Federal de Mato Grosso do Sul Publicador: Universidade Federal de Mato Grosso do Sul
Tipo: Dissertação de Mestrado
POR
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O Minist erio da Educa c~ao (MEC) e o Instituto de Estudos e Pesquisas em Educa c~ao An sio Teixeira (INEP) v^em aplicando censos e avalia c~oes educacionais a m de auxiliar a tomada de decis~ao em rela c~ao as pol ticas educacionais no Brasil. Com isso, e preciso que os dados gerados sejam transformados em dados estat stico-educacionais de forma agil, auxiliando a visualiza c~ao da realidade socioeducacional do pa s. Nesse contexto, este projeto visa trabalhar com os microdados do ENEM (Exame Nacional do Ensino M edio), no per odo de 1998 at e 2008, disponibilizados no formato ASCII, e transform a-los em um Data Warehouse (DW), o qual deve dar suporte a consultas anal ticas que subsidiar~ao a tomada de decis~ao. Ap os a naliza c~ao do DW, e realizada a cria c~ao de um Linked Open Data (LOD) para o ENEM, que se destina a dar suporte a pesquisa de informa c~oes de forma automatizada e tamb em oferecer suporte a descoberta de novas liga c~oes/associa c~oes entre os dados. Al em disso, foram selecionados e analisados tr^es processos open sources para serem analisados: o primeiro utiliza as ferramentas Stdtrip, Triplify e Virtuoso; o segundo utiliza Ontowiki, Olap2DataCube e Virtuoso; e o terceiro processo utiliza as ferramentas Babel e Virtuoso...

Have Business Method Patents Gotten a Bum Rap? Some Empirical Evidence

Hunter, Starling David, III
Fonte: MIT - Massachusetts Institute of Technology Publicador: MIT - Massachusetts Institute of Technology
Tipo: Trabalho em Andamento Formato: 239476 bytes; application/pdf
EN_US
Relevância na Pesquisa
45.76%
This study presents the results of an empirical test of two hypotheses concerning the quality of a group of data processing patents on methods of doing business. The hypotheses are motivated by two frequently voiced criticisms of these patents: that their scope is overly broad and that they cite too little "prior art" (the extant body of knowledge or the array of prior solutions to the problem which the patented invention purports to solve). Using a sample of over 3,500 data processing, software, and internet patents granted between 1975-1999, I tested the two hypotheses with three patent statistics - the number of patent and non-patent prior art citations and the number of claims. In short, I find little support for the "conventional wisdom" concerning patents on methods of doing business. More specifically, I find that these patents neither cite less patent or non-patent prior nor make more claims While these findings don't completely exonerate business method patents of the charges of inferior quality...

A mathematical analysis of an electronic dot generating scanner for dot resolution and tone reproduction

Waechter, Frederick K.
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
45.92%
An electronic dot generating scanner is a complex machine. This complexity is based in the photographic methods which the scanner is designed to duplicate. This study addresses the mathematical principles of the entire scanner system. This paper was intended to provide an improved understanding of the scanner system. The hypothesis states that a mathematical analysis with experimental verification can be developed to accurately model the internal optics, tone reproduction, and output dot characteristics of an electronic dot generating scanner. The analysis begins with a functional block diagram, which shows the information flow through the scanner. This diagram breaks the process into its smaller components and provides the framework for the mathematical analysis. The diagram has an accompanying word description for each section of the scanner. The basic function of the scanning optics, data compression, gradation, color correction, digitization, halftone screening, and film exposure is discussed for the scanner system. The system characterization develops a mathematical analysis based on the functional block diagram. It details the theory behind each section of the scanner. Fourier optics, electrical engineering, and photographic tone reproduction theories are applied to the various scanner functions. The scanning optical system is analyzed using Fourier transform techniques to describe the effect of the imaging system on image transmission. Modulation Transfer Functions (MTFs) are used to show the output frequency spectrum of the scanning aperture. The electronic unsharp masking is modeled by using an optically equivalent process. The photomultiplier and associated data compression's effect on the reproduction of shadow detail is demonstrated graphically. The improvement in the photomultiplier response is noted due to logarithmic compression. The flexibility of the gradation processing is demonstrated through a graphical representation of the treatment of a typical signal. The gradation selection provides the operator with the ability to tailor the output to the reproduction requirements of each transparency. This flexibility is a great advantage...

Electronic medical records concepts and data management

Sharma, Shruti
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
55.81%
Healthcare information (Clinical Data) is associated with every individual, young or old, rich or poor, belonging to any country. Clinical data is very extensive. Everyday some new diseases and new symptoms are being seen and the human race is struggling to find cures. There are many diseases whose diagnosis, symptoms, and possible treatment are known but unfortunately that rare knowledge is not available to every individual in the world. This initiates all the vision behind presenting a paper on EMR/ EHR and its Data Management. The thesis reviews the concept of EMR/ EHR thus explaining its concepts, importance, market need etc. Thesis will also explain privacy and security related to clinical data in electronic format which is a very important as any electronic data is prone to hacks and data loss. To manage and utilize such amount of data, there is need of extensive data management and so the thesis explains the concepts of Datawarehouse, its importance, ETL, Schemas etc. As part of explaining these concepts a mini EMR/EHR Datawarehouse is designed which explains various subject areas possible in any EMR Datawarehouse. Last but not the least, the thesis comments on the Future of EMR/ EHR and the World Vision on this revolutionary change.

Business forms industry's response to EDI and electronic substitutes

Hill, Michael J.
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
55.85%
This project has two primary objectives. Both objectives will be achieved through research of current data and the creation, distribution and analysis of a business forms industry survey. The first objective was to draw attention to the growing demand for electronic substitutes for traditional printed business forms, and educate the business forms industry about the biggest threat and opportunity of these technologies, Electronic Data Interchange (EDI). This was accomplished by outlining the technology and processes of EDI and describing the various benefits of EDI over traditional printed business forms systems. Such educational descriptions and analysis were necessary due to the lack of attention given to the intense growth in electronic substitutes by business forms trade publications and leaders. The second objective was to quantify the level of awareness that exists for EDI throughout the business forms industry, assess the current and future investment in and development of EDI and electronic forms software and systems by the major forms producing companies of the U.S. and identify what level of leadership has been received with regards to combating or investing in these technologies. The answers to these questions represent new information not currently in existence. A survey of business forms producers was necessary to attain much of this information. The educational information predominantly focuses on EDI instead. of the complete range of electronic substitutes for business forms due to the significant effect that this one technology has. A wide range of sources were consulted...

HadoopT - breaking the scalability limits of Hadoop

Talwalkar, Anup
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
45.76%
The increasing use of computing resources in our daily lives leads to data generation at an astonishing rate. The computing industry is being repeatedly questioned for its ability to accommodate the unpredictable growth rate of data. It has encouraged the development of cluster based storage systems. Hadoop is a popular open source framework known for its massive cluster based storage. Hadoop is widely used in the computer industry because of its scalability, reliability and low cost of implementation. The data storage of the Hadoop cluster is managed by a user level distributed file system. To provide a scalable storage on the cluster, the file system metadata is decoupled and is managed by a centralized namespace server known as NameNode. Compute Nodes are primarily responsible for the data storage and processing. In this work, we analyze the limitations of Hadoop such as single point of access of the file system and fault tolerance of the cluster. The entire namespace of the Hadoop cluster is stored on a single centralized server which restricts the growth and data storage capacity. The efficiency and scalability of the cluster depends heavily on the performance of the single NameNode. Based on thorough investigation of Hadoop limitations...

Scalable data clustering using GPUs

Pangborn, Andrew D.
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
45.82%
The computational demands of multivariate clustering grow rapidly, and therefore processing large data sets, like those found in flow cytometry data, is very time consuming on a single CPU. Fortunately these techniques lend themselves naturally to large scale parallel processing. To address the computational demands, graphics processing units, specifically NVIDIA's CUDA framework and Tesla architecture, were investigated as a low-cost, high performance solution to a number of clustering algorithms. C-means and Expectation Maximization with Gaussian mixture models were implemented using the CUDA framework. The algorithm implementations use a hybrid of CUDA, OpenMP, and MPI to scale to many GPUs on multiple nodes in a high performance computing environment. This framework is envisioned as part of a larger cloud-based workflow service where biologists can apply multiple algorithms and parameter sweeps to their data sets and quickly receive a thorough set of results that can be further analyzed by experts. Improvements over previous GPU-accelerated implementations range from 1.42x to 21x for C-means and 3.72x to 5.65x for the Gaussian mixture model on non-trivial data sets. Using a single NVIDIA GTX 260 speedups are on average 90x for C-means and 74x for Gaussians with flow cytometry files compared to optimized C code running on a single core of a modern Intel CPU. Using the TeraGrid Lincoln high performance cluster at NCSA C-means achieves 42% parallel efficiency and a CPU speedup of 4794x with 128 Tesla C1060 GPUs. The Gaussian mixture model achieves 72% parallel efficiency and a CPU speedup of 6286x.

On-screen electronic forms design: Graphical elements vs. straight data entry formats

Preston, Karen
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
45.92%
Electronic forms is an emerging market that is being incorporated into daily use in many corporations and small businesses. In the transition from paper forms to electronic forms many users are merely recreating the paper forms digitally to create an exact replica on screen. This is being done through the utilization of page layout programs such as QuarkXpress and PageMaker as well as through the aid of electronic forms software programs available today. These software programs aid the user with forms design, often providing templates of forms that are in a graphical format containing rules, logos, and other graphically embellishing elements. The electronic forms industry is also moving towards a workgroup computing environment where intelligent forms can automatically be sent electronically to other users in the workplace without ever printing onto paper. However, the graphic elements involved in the electronic forms of today can slow down networks and require many bytes of memory for storage especially in major corporations who may have thousands of forms on file. A comparison of the graphically embellished form versus a straight data-entry questions only form format needs to be researched. The purpose of this thesis project is to provide the electronic forms industry with knowledge as to the advantages and disadvantages of both a graphical form and a straight data-entry form. This research also performed a series of tests as to the timeliness...

An image storage system using a relational database management system to facilitate picture data handling

Johnson, Daryl G.
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
55.63%
The Image Storage System (ISS) is a general purpose graphics facility for the storage and retrieval of pictures. ISS utilizes the capabilities of the Mistress Relational Database Management System, the Relation Interpreter Package and the CORE Graphics Package. The system was developed to illustrate that by utilizing a database system for the storage of the actual picture description, users can incorporate graphics into their applications very simply without becoming a graphics or programming expert. Through the database, image data can be shared between applications and changes or additions to the image will not require program modification. As a consequence of using a data base management system, graphical as well as nongraphical information may be stored together. An important out come of this is that the graphical data may be accessible for non-graphical purposes as well. The database schema is illustrated and its flexibility and user adaptability is demonstrated. The graphics image interpreter is described as well as the underlying Relation Interpreter Package on which it is built.

Energy-aware replica selection for data-intensive services in cloud

Li, Bo
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
55.72%
With the increasing energy cost in data centers, an energy efficient approach to provide data intensive services in the cloud is highly in demand. This thesis solves the energy cost reduction problem of data centers by formulating an energy-aware replica selection problem in order to guide the distribution of workload among data centers. The current popular centralized replica selection approaches address such problems but they lack scalability and are vulnerable to a crash of the central coordinator. Also, they do not take total data center energy cost as the primary optimization target. We propose a simple decentralized replica selection system implemented with two distributed optimization algorithms (consensus-based distributed projected subgradient method and Lagrangian dual decomposition method) to work with clients as a decentralized coordinator. We also compare our energy-aware replica selection approach with the replica selection where a round-robin algorithm is implemented. A prototype of the decentralized replica selection system is designed and developed to collect energy consumption information of data centers. The results show that in the best case scenario of our experiments, the total energy cost using the Lagrangian dual decomposition method is 17.8% less than a baseline round-robin method and 15.3% less than consensus-based distributed projected subgradient method. Also...

Necessity of implementing electronic personal health information privacy regulation in Dominican Republic

Molina, Miguel
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
Relevância na Pesquisa
45.79%
The use of technology has increased considerably in the Dominican Republic in the past years. All public and private organizations have started a process of digitize all information they manage. The health area is not away from this process and hence they have started to use personal health records in a digital format. However, the management given to this information is not regulated by any law in the DR. Doctors, medical centers, health assurance companies and patients treat this data as they want without any control which represents a huge privacy risk for patients in the country. During our investigation we looked into Dominican law. For conducting this study we were advised by qualified attorneys in order to find a regulation regarding this topic. We conducted three interviews to lawyers where we asked them about their experience and existent legislation related to electronic PHR. According to the information we gathered, no regulation with this topic was encountered. Only several chapters referring to intrusions attacks and other about professional secret was found in the law. However, we did not locate any statement which strictly specifies procedures for electronic PHR information management. We also interviewed three medical professionals and asked them some questions about the management of the electronic personal health records in the Dominican Republic. They talked about their experience and the different mechanisms for manipulating...