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1

Federated Search in the Wild The Combined Power of over a Hundred Search Engines  

E-print Network

Federated Search in the Wild The Combined Power of over a Hundred Search Engines Dong Nguyen1}@cs.utwente.nl ABSTRACT Federated search has the potential of improving web search: the user becomes less dependent Keywords Federated search, distributed information retrieval, evalua- tion, dataset, test collection, web

Hiemstra, Djoerd

2

Internet Search Engines  

NSDL National Science Digital Library

If you are reading this Internet Scout report, you most likely have used a search engine before and may have wondered what makes some websites show up on Google and others not. This Topic in Depth provides some background information on search engines. The first website from Webopedia gives an overview of how search engines work (1) provides more information on the mechanics of search engines and debunks some common myths. If any terms used in the article are new to you, this website (3) offers a thesauras of key terms along with tips to help you improve your chances of getting your website to show up on search engines. This brief history from Web Reference (4) provides some perspective on how the technology began, while this article (5) gives some basic information on where we are today with search engine usage and technology. Search Engine Watch offers this listing of kids search engines (6). The University at Albany 7) offers a list of suggestions on how to choose a website for various uses and searching preferences.

3

Searches Conducted for Engineers.  

ERIC Educational Resources Information Center

This paper reports an industrial information specialist's experience in performing online searches for engineers and surveys the databases used. Engineers seeking assistance fall into three categories: (1) those who recognize the value of online retrieval; (2) referrals by colleagues; and (3) those who do not seek help. As more successful searches

Lorenz, Patricia

4

Improving Search Engine Reliability  

NASA Astrophysics Data System (ADS)

Search engines on the Internet are used daily to access and find information. While these services are providing an easy way to find information globally, they are also suffering from artificially created false results. This paper describes two techniques that are being used to manipulate the search engines: spam pages (used to achieve higher rankings on the result page) and cloaking (used to feed falsified data into search engines). This paper also describes two proposed methods to fight this kind of misuse, algorithms for both of the formerly mentioned cases of spamdexing.

Pruthi, Jyoti; Kumar, Ela

2010-11-01

5

High-Speed and Low-Power Network Search Engine Using Adaptive Block-Selection Scheme  

Microsoft Academic Search

A new approach for using block-selection scheme to increase the search throughput of multi-block TCAM-based network search engines is proposed. While the existing methods try to counter and forcibly balance the inherent bias of the Internet traffic, our method takes advantage of it. Our method improves flexibility of table management and gains scalability towards high rates of change in traffic

Mohammad J. Akhbarizadeh; Mehrdad Nourani; Rina Panigrahy

2005-01-01

6

DATA SEARCH ENGINE INTRODUCTION  

E-print Network

are performed every day. The Web consists of the Surface Web and the Deep Web (Hidden Web or Invisible Web of a page allows the page to be fetched directly. In contrast, the Deep Web contains pages that cannotD DATA SEARCH ENGINE INTRODUCTION The World Wide Web was first developed by Tim Berners- Lee

Meng, Weiyi

7

Search Engine Colossus: International Directory of Search Engines  

NSDL National Science Digital Library

Created by Bryan Strome, this metasite offers links to a large number of country- or region-specific search engines. The search engines are organized by country, with a link to the service, the language(s) it uses, its point of origin, and a short description when available. The number of search engines available under each heading can vary considerably, as would be expected. Search engines in eleven general categories, including Academic, Business, Medical, and Sports, are also listed. Users wishing to narrow their searches and/or utilize some lesser-known search engines will find this site a helpful starting point.

Strome, Bryan A.

8

Federated Search of Text Search Engines in Uncooperative Environments  

E-print Network

i Federated Search of Text Search Engines in Uncooperative Environments Luo Si Language Technology..............................................................................................................1 1.2 Federated search .....................................................................................................................3 1.3 Applications of federated search

Eskenazi, Maxine

9

Searching for people on Web search engines  

Microsoft Academic Search

The Web is a communication and information technology that is often used for the distribution and retrieval of personal information. Many people and organizations mount Web sites containing large amounts of information on individuals, particularly about celebrities. However, limited studies have examined how people search for information on other people, using personal names, via Web search engines. Explores the nature

Amanda Spink; Bernard J. Jansen

2004-01-01

10

Abstract --This panel session paper outlines one of the re-search thrust areas in the Power System Engineering Research  

E-print Network

for massive penetration of renewable resources such as wind and solar power into the mix of elec- tricity1 Abstract -- This panel session paper outlines one of the re- search thrust areas in the Power and quantifying the im- pact that massive integration of wind power will have on the power system in terms

Oren, Shmuel S.

11

SEE: a Search Engine for Search Engines Hyun-Woo Kim  

E-print Network

-purpose search engines in terms of its search quality and amount of data which has been accomplished for the lastSEE: a Search Engine for Search Engines Hyun-Woo Kim College of Information Sciences and Technology describe the way how I developed a new kind of search engine named SEE, a search engine for search engines

12

A Search Engine Features Comparison.  

ERIC Educational Resources Information Center

Until recently, the World Wide Web (WWW) public access search engines have not included many of the advanced commands, options, and features commonly available with the for-profit online database user interfaces, such as DIALOG. This study evaluates the features and characteristics common to both types of search interfaces, examines the Web search

Vorndran, Gerald

13

Site-Searching Strategies of Searchers Referred from Search Engines  

E-print Network

of referral keywords (i.e., search terms) used at the major search engine. Of the six, the three major to the site Referral Keyword (query) - the terms that the user typed in the search engine Sponsored search1 Site-Searching Strategies of Searchers Referred from Search Engines Adan Ortiz-Cordova College

Jansen, James

14

Search Engine Optimization: SEO Book  

NSDL National Science Digital Library

The strange and wondrous ways in which search engines gather their indexes is made a little clearer in this tutorial. Written by a web designer disappointed with how difficult his pages were to find with the standard search engines, this page gives insight into how Infoseek, Lycos, Alta Vista, Excite, Web Crawler, and Open Text catalog web pages. The search strategy of each engine is described, along with tips for how web designers can increase their site's chances of being among the hits returned when users enter relevant search criteria. Although indexing algorithms are constantly being updated, this site presents common-sense guidelines that web designers interested in reaching a wider audience will find useful.

Wall, Aaron

2007-07-14

15

User Reactions to Search Engines Logos: Investigating Brand Knowledge of web Search Engines  

E-print Network

(i.e., the generic term #12;for web search). Most of the other search engines, including MicrosoftUser Reactions to Search Engines Logos: Investigating Brand Knowledge of web Search Engines Bernard 16802-1307 asm6@psu.edu ABSTRACT In this work, we investigate consumer reaction to web search engine

Jansen, James

16

Quantum searching application in search based software engineering  

NASA Astrophysics Data System (ADS)

The Search Based Software Engineering (SBSE) is widely used in software engineering for identifying optimal solutions. However, there is no polynomial-time complexity solution used in the traditional algorithms for SBSE, and that causes the cost very high. In this paper, we analyze and compare several quantum search algorithms that could be applied for SBSE: quantum adiabatic evolution searching algorithm, fixed-point quantum search (FPQS), quantum walks, and a rapid modified Grover quantum searching method. The Grover's algorithm is thought as the best choice for a large-scaled unstructured data searching and theoretically it can be applicable to any search-space structure and any type of searching problems.

Wu, Nan; Song, FangMin; Li, Xiangdong

2013-05-01

17

Search Engines: Gateway to a New ``Panopticon''?  

NASA Astrophysics Data System (ADS)

Nowadays, Internet users are depending on various search engines in order to be able to find requested information on the Web. Although most users feel that they are and remain anonymous when they place their search queries, reality proves otherwise. The increasing importance of search engines for the location of the desired information on the Internet usually leads to considerable inroads into the privacy of users. The scope of this paper is to study the main privacy issues with regard to search engines, such as the anonymisation of search logs and their retention period, and to examine the applicability of the European data protection legislation to non-EU search engine providers. Ixquick, a privacy-friendly meta search engine will be presented as an alternative to privacy intrusive existing practices of search engines.

Kosta, Eleni; Kalloniatis, Christos; Mitrou, Lilian; Kavakli, Evangelia

18

NASA Indexing Benchmarks: Evaluating Text Search Engines  

NASA Technical Reports Server (NTRS)

The current proliferation of on-line information resources underscores the requirement for the ability to index collections of information and search and retrieve them in a convenient manner. This study develops criteria for analytically comparing the index and search engines and presents results for a number of freely available search engines. A product of this research is a toolkit capable of automatically indexing, searching, and extracting performance statistics from each of the focused search engines. This toolkit is highly configurable and has the ability to run these benchmark tests against other engines as well. Results demonstrate that the tested search engines can be grouped into two levels. Level one engines are efficient on small to medium sized data collections, but show weaknesses when used for collections 100MB or larger. Level two search engines are recommended for data collections up to and beyond 100MB.

Esler, Sandra L.; Nelson, Michael L.

1997-01-01

19

Solar powered Stirling engine  

SciTech Connect

In a solar dish module which comprises a dish which receives incident solar rays and reflects them to a focus at which is located the combination of a receiver and a heat engine organized and arranged so that the heat energy of the reflected solar rays collected at the receiver powers the engine, and wherein the receiver and heat engine are supported from the dish by a framework, the improvement is described which comprises journal means for journaling at least the engine on the framework to maintain certain predetermined spatial orientation for the engine in relation to the direction of gravity irrespective of spatial orientation of the dish.

Meijer, R.J.

1987-11-24

20

Index Terms --Smart grid; power engineering education; power engineering curriculum; power engineering re-  

E-print Network

1 Index Terms -- Smart grid; power engineering education; power engineering curriculum; power engineering re- sources; power engineering workforce. Abstract -- A widely supported effort to modernize the United States power system has led to an engineering initiative va- riously known as `smart grid

21

The Country Music Search Engine  

NSDL National Science Digital Library

Garth Brooks fans, hold on to your hats! The Country Music Search Engine offers a full spectrum of country music news and information. Featured on the site is the enormous Country Music Directory, a database of all things related to country music including Websites for individual singers or groups, news links and online publications, associations, and sheet music and lyrics. The directory seems to be geared more towards mainstream country music: a search for Shania Twain rendered 242 hits while "Robbie Fulks" pulled up just one Web resource. The Website also contains a listing of the top 40 Websites as ranked by visitors to the site, and links to country events, MP3s, and album reviews.

22

SPELLING CORRECTION IN THE PUBMED SEARCH ENGINE.  

PubMed

It is known that users of internet search engines often enter queries with misspellings in one or more search terms. Several web search engines make suggestions for correcting misspelled words, but the methods used are proprietary and unpublished to our knowledge. Here we describe the methodology we have developed to perform spelling correction for the PubMed search engine. Our approach is based on the noisy channel model for spelling correction and makes use of statistics harvested from user logs to estimate the probabilities of different types of edits that lead to misspellings. The unique problems encountered in correcting search engine queries are discussed and our solutions are outlined. PMID:18080004

Wilbur, W John; Kim, Won; Xie, Natalie

2006-11-01

23

Capacity Planning for Vertical Search Engines  

E-print Network

Vertical search engines focus on specific slices of content, such as the Web of a single country or the document collection of a large corporation. Despite this, like general open web search engines, they are expensive to maintain, expensive to operate, and hard to design. Because of this, predicting the response time of a vertical search engine is usually done empirically through experimentation, requiring a costly setup. An alternative is to develop a model of the search engine for predicting performance. However, this alternative is of interest only if its predictions are accurate. In this paper we propose a methodology for analyzing the performance of vertical search engines. Applying the proposed methodology, we present a capacity planning model based on a queueing network for search engines with a scale typically suitable for the needs of large corporations. The model is simple and yet reasonably accurate and, in contrast to previous work, considers the imbalance in query service times among homogeneous...

Badue, Claudine; Almeida, Virgilio; Baeza-Yates, Ricardo; Ribeiro-Neto, Berthier; Ziviani, Artur; Ziviani, Nivio

2010-01-01

24

Introduction to Video Search Engines Tutorial Notes  

E-print Network

: The emergence of video search engines on major web search portals and market forces such as IPTV and mobile and create indexed on-line archives. Market forces such as the emergence of IPTV, mobile video services

Fisher, Kathleen

25

Job Search: Regional/Quality Job Search Engines  

E-print Network

Resources Job Search: Regional/Quality Job Search Engines Bellevue College: http://bellevuecollege.edu/careers/sac_general.html#searchengines PNW Job Board: https://services.philanthropynw.org/jobbank/ ColorsNW Job Bank: http://jobs.colorscareers.com/c/search_results.cfm?site_id=1919 Seattle Jobs: http://www.seattlejobs.com/ WorkSource Seattle-King County: http

Carter, John

26

TargetSearch: A ranking friendly XML keyword search engine  

Microsoft Academic Search

This demo illustrates an XML search engine TargetSearch that addresses an open problem in XML keyword search: given relevant matches to keywords, how to compose query results properly so that they can be effectively ranked and easily digested by users. The approaches adopted in the literature generate either overwhelmingly large results or fragmentary results, both of which may cause the

Ziyang Liu; Yichuan Cai; Yi Chen

2010-01-01

27

Search-Based Software Engineering Mark Harman  

E-print Network

successfully to a number of engineering problems. For example, a literature survey of genetic algorithms; electronic engineering [5, 11, 25] Genetic algorithm (GA) research and researchers have even received in the more established #12;elds of engineering. A literature search on `Software Engineering' and `genetic

Singer, Jeremy

28

OntoSearch: An Ontology Search Engine  

Microsoft Academic Search

Reuse of knowledge bases and the semantic web are two promising areas in knowledge technologies. Given some user requirements, finding the suitable ontologies is an important task in both these areas. This paper discusses our work on OntoSearch, a kind of \\

Yi Zhang; Wamberto Weber Vasconcelos; Derek H. Sleeman

2004-01-01

29

Search Engine Technologies CS 5319, Spring 2007  

E-print Network

Search Engine Technologies CS 5319, Spring 2007 Nigel Ward Sample Project Ideas 1. I would like fair projects. 4. Edith thinks that a search engine probably should give higher weight to terms for children, primarily in terms of being easy to read, for example for doing background research for science

Ward, Nigel

30

Fully automatic wrapper generation for search engines  

Microsoft Academic Search

When a query is submitted to a search engine, the search engine returns a dynamically generated result page containing the result records, each of which usually consists of a link to and\\/or snippet of a retrieved Web page. In addition, such a result page often also contains information irrelevant to the query, such as information related to the hosting site

Hongkun Zhao; Weiyi Meng; Zonghuan Wu; Vijay Raghavan; Clement T. Yu

2005-01-01

31

Agent Communication within a Search Engine Architecture  

E-print Network

Agent Communication within a Search Engine Architecture M. López-Sánchez, F. Martín, J. García, X some details about the architecture of a fully implemented search engine for the Internet. Its the pages so that HTML format is transformed into XML and second indexing them so that information retrieval

López-Sánchez, Maite

32

Agent Communication Inside an Internet Search Engine  

E-print Network

Agent Communication Inside an Internet Search Engine M. López-Sánchez, F. Martín, J. García, X implemented search engine for the Internet. Its architecture is based on autonomous software agents. Subsequent page treatment consists on first filtering the pages so that HTML format is transformed into XML

López-Sánchez, Maite

33

Deep-web search engine ranking algorithms  

E-print Network

The deep web refers to content that is hidden behind HTML forms. The deep web contains a large collection of data that are unreachable by link-based search engines. A study conducted at University of California, Berkeley ...

Wong, Brian Wai Fung

2010-01-01

34

Steam electric power generation: Technology and environmental impact. (Latest citations from Information Services in Mechanical Engineering database). Published Search  

SciTech Connect

The bibliography contains citations concerning the technology and environmental impact of steam electric power generation. Plant operation, control, heating and cooling systems, pollution and noise control, and environmental protection are discussed. Economic analyses of plant operation, plant management, energy conservation measures, and modeling and computational techniques are presented. (Contains a minimum of 171 citations and includes a subject term index and title list.)

Not Available

1994-01-01

35

Steam electric power generation: Technology and environmental impact. (Latest citations from Information Services in Mechanical Engineering database). Published Search  

SciTech Connect

The bibliography contains citations concerning the technology and environmental impact of steam electric power generation. Plant operation, control, heating and cooling systems, pollution and noise control, and environmental protection are discussed. Economic analyses of plant operation, plant management, energy conservation measures, and modeling and computational techniques are presented. (Contains a minimum of 188 citations and includes a subject term index and title list.)

NONE

1995-02-01

36

Automatic Generation of Search Engines  

Microsoft Academic Search

A plethora of enhancements are available to be used together with the ?? search algorithm. There are so many, that their selection and implementation is a non-trivial task, even for the expert. Every do- main has its specifics which affect the search tree Even seemingly minute changes to an evaluation function can have an impact on the charac- teristics of

Markian Hlynka; Jonathan Schaeffer

2006-01-01

37

Clinician Search Behaviors May Be Influenced by Search Engine Design  

PubMed Central

Background Searching the Web for documents using information retrieval systems plays an important part in clinicians’ practice of evidence-based medicine. While much research focuses on the design of methods to retrieve documents, there has been little examination of the way different search engine capabilities influence clinician search behaviors. Objectives Previous studies have shown that use of task-based search engines allows for faster searches with no loss of decision accuracy compared with resource-based engines. We hypothesized that changes in search behaviors may explain these differences. Methods In all, 75 clinicians (44 doctors and 31 clinical nurse consultants) were randomized to use either a resource-based or a task-based version of a clinical information retrieval system to answer questions about 8 clinical scenarios in a controlled setting in a university computer laboratory. Clinicians using the resource-based system could select 1 of 6 resources, such as PubMed; clinicians using the task-based system could select 1 of 6 clinical tasks, such as diagnosis. Clinicians in both systems could reformulate search queries. System logs unobtrusively capturing clinicians’ interactions with the systems were coded and analyzed for clinicians’ search actions and query reformulation strategies. Results The most frequent search action of clinicians using the resource-based system was to explore a new resource with the same query, that is, these clinicians exhibited a “breadth-first” search behaviour. Of 1398 search actions, clinicians using the resource-based system conducted 401 (28.7%, 95% confidence interval [CI] 26.37-31.11) in this way. In contrast, the majority of clinicians using the task-based system exhibited a “depth-first” search behavior in which they reformulated query keywords while keeping to the same task profiles. Of 585 search actions conducted by clinicians using the task-based system, 379 (64.8%, 95% CI 60.83-68.55) were conducted in this way. Conclusions This study provides evidence that different search engine designs are associated with different user search behaviors. PMID:20601351

Coiera, Enrico; Zrimec, Tatjana; Compton, Paul

2010-01-01

38

Geographic ranking for a local search engine  

Microsoft Academic Search

Traditional ranking schemes of the relevance of a Web page to a user query in a search engine are less appropriate when the search term contains geographic information. Often, geographic entities, such as addresses, city names, and location names, appear only once or twice in a Web page, and are typically not in a heading or larger font. Consequently, an

Tony Abou-assaleh; Weizheng Gao

2007-01-01

39

Kalchas: a dynamic XML search engine  

Microsoft Academic Search

This paper outlines the system architecture and the core data structures of Kalchas, a fulltext search engine for XML data with emphasis on dynamic indexing, and identifies features worth demonstrating. The concept of dynamic index implies that the aim is to re ect the creation of, deletion of, and updates to relevant files in the search index as early as

Rasmus Kaae; Thanh-Duy Nguyen; Dennis Nřrgaard; Albrecht Schmidt

2005-01-01

40

A search engine for 3D models  

Microsoft Academic Search

As the number of 3D models available on the Web grows, there is an increasing need for a search engine to help people find them. Unfortunately, traditional text-based search techniques are not always effective for 3D data. In this article, we investigate new shape-based search methods. The key challenges are to develop query methods simple enough for novice users and

Thomas A. Funkhouser; Patrick Min; Michael M. Kazhdan; Joyce Chen; Alex Halderman; David P. Dobkin; David Pokrass Jacobs

2003-01-01

41

A Flexible Image Search Engine+ Panrit Tosukhowong*  

E-print Network

engines. This paper describes MISE, the MediaSys Image Search Engine over a large-scale network. After image-based MediaSys system is composedof a set of MediaSys servers and a set of MISE clients. Media image data. Moreever. they can visualise them and/or analyse them. MediaSys, image searchengine

Schmidt, Douglas C.

42

STRUCTURE-BASED QUERY EXPANSION FOR XML SEARCH ENGINE  

Microsoft Academic Search

Based on the query expansion techniques in information retrieval systems, structure-based query expansion for XML search engines, which is designed to ease the query for XML data while keeping the power and flexibility of XML query, is introduced in this paper. To enable the structure expansion, a structure thesaurus should be built first, which involves the construction of a weighted

Wei-ning Qian; Hai-lei Qian; Li Wei; Yan Wang; Ao-ying Zhou

43

Counter measures against evolving search engine spamming techniques  

Microsoft Academic Search

Search engine spamming is a practice of misleading the search engine and increasing the page rank of undeserving websites. The black hat search engine optimization (SEO) techniques leads to untrustworthy results for search engines. In this paper, we have characterized some commonly used black hat techniques, and we have proposed a new way to counter those techniques using link based

Antriksha Somani; Ugrasen Suman

2011-01-01

44

Automated Mechanism Design for Large Instances of Federated Search Engines  

E-print Network

Automated Mechanism Design for Large Instances of Federated Search Engines Francesco Trov in a search engine web page. In particular, Federated Search Engine auctions are challenging with respect setting named Federated Search Engines (FSE), since it is particularly challenging on the MD point of view

Gatti, Nicola

45

The study of key techniques in intelligent XML search engine  

Microsoft Academic Search

With the rapid development of Internet, Web has been becoming a main information source. Search engine is the most important information retrieval tool. However, most popular search engines are based on HTML documents and lack of semantic retrieval and personalized service. This paper introduces the conception of XML search engine, gives a framework of an intelligent XML search engine, and

Fang Yuan; Ya-Nan Hao; Ge Yu

2004-01-01

46

XMLibrary Search: An XML Search Engine Oriented to Digital Libraries  

Microsoft Academic Search

The increase in the amount of data available in digital li- braries calls for the development of search engines that allow the users to nd quickly and eectiv ely what they are looking for. The XML tag- ging makes possible the addition of structural information in digitized content. These metadata oer new opportunities to a wide variety of new services.

Enrique Sánchez Villamil; Carlos González Muńoz; Rafael C. Carrasco

2005-01-01

47

An Analysis of Chinese Search Engine Filtering  

E-print Network

The imposition of government mandates upon Internet search engine operation is a growing area of interest for both computer science and public policy. Users of these search engines often observe evidence of censorship, but the government policies that impose this censorship are not generally public. To better understand these policies, we conducted a set of experiments on major search engines employed by Internet users in China, issuing queries against a variety of different words: some neutral, some with names of important people, some political, and some pornographic. We conducted these queries, in Chinese, against Baidu, Google (including google.cn, before it was terminated), Yahoo!, and Bing. We found remarkably aggressive filtering of pornographic terms, in some cases causing non-pornographic terms which use common characters to also be filtered. We also found that names of prominent activists and organizers as well as top political and military leaders, were also filtered in whole or in part. In some ca...

Zhu, Tao; Wallach, Dan S

2011-01-01

48

Focused ranking in a vertical search engine  

Microsoft Academic Search

Since the debut of PageRank and HITS, hyperlink-induced Web document ranking has come a long way. The Web has become increasingly vast and topically diverse. Such vastness has led many into the area of topic-sensitive ranking and its variants. We address the high dimensionality of the Web by providing tools for focused search. A focused search engine is one which

Philip O'brien; Tony Abou-assaleh

2007-01-01

49

A distributed mobile agent based Web search for adaptive meta search engines  

Microsoft Academic Search

In this paper, the problems of current Web search engines are analyzed, and the need for a new design is justified. Some ideas on how to improve current Web search engines are presented, and then an adaptive method for Web meta-search engines with a multi-agent specially the mobile agents is presented to make search engines work more efficiently. In the

M. Koorangi; K. Zamanifar

2005-01-01

50

Evidence-based Medicine Search: a customizable federated search engine  

PubMed Central

Purpose: This paper reports on the development of a tool by the Arizona Health Sciences Library (AHSL) for searching clinical evidence that can be customized for different user groups. Brief Description: The AHSL provides services to the University of Arizona's (UA's) health sciences programs and to the University Medical Center. Librarians at AHSL collaborated with UA College of Medicine faculty to create an innovative search engine, Evidence-based Medicine (EBM) Search, that provides users with a simple search interface to EBM resources and presents results organized according to an evidence pyramid. EBM Search was developed with a web-based configuration component that allows the tool to be customized for different specialties. Outcomes/Conclusion: Informal and anecdotal feedback from physicians indicates that EBM Search is a useful tool with potential in teaching evidence-based decision making. While formal evaluation is still being planned, a tool such as EBM Search, which can be configured for specific user populations, may help lower barriers to information resources in an academic health sciences center. PMID:18379665

Bracke, Paul J.; Howse, David K.; Keim, Samuel M.

2008-01-01

51

The Use of Web Search Engines in Information Science Research.  

ERIC Educational Resources Information Center

Reviews the literature on the use of Web search engines in information science research, including: ways users interact with Web search engines; social aspects of searching; structure and dynamic nature of the Web; link analysis; other bibliometric applications; characterizing information on the Web; search engine evaluation and improvement; and…

Bar-Ilan, Judit

2004-01-01

52

Spelling correction in the PubMed search engine  

Microsoft Academic Search

It is known that users of internet search engines often enter queries with misspellings in one or more search terms. Several web search engines make suggestions for correcting misspelled words, but the methods used are proprietary and unpublished to our knowledge. Here we describe the methodology we have developed to perform spelling correction for the PubMed search engine. Our approach

W. John Wilbur; Won Kim; Natalie Xie

2006-01-01

53

Analysis of Web Search Engine Clicked Documents  

Microsoft Academic Search

In this paper we process and analyze Web search engine query and click data from the perspective of the documents (URs) selected. We initially define possible document categories and select descriptive variables to define the documents. The URL dataset is preprocessed and analyzed using some traditional statistical methods, and then processed by the Kohonen (1984) SOM clustering technique, which we

David F. Nettleton; Liliana Calderón-benavides; Ricardo A. Baeza-yates

2006-01-01

54

Inverted files for text search engines  

Microsoft Academic Search

The technology underlying text search engines has advanced dramatically in the past decade. The development of a family of new index representations has led to a wide range of innovations in index storage, index construction, and query evaluation. While some of these developments have been consolidated in textbooks, many specific techniques are not widely known or the textbook descriptions are

Justin Zobel; Alistair Moffat

2006-01-01

55

Modeling Search Engine Effectiveness for Federated Search Luo Si and Jamie Callan  

E-print Network

& Subject Descriptors: H.3.3 [Information Search and Retrieval]: General Terms: Algorithms Keywords: ModelModeling Search Engine Effectiveness for Federated Search Luo Si and Jamie Callan School Federated search links multiple search engines into a single, virtual search system. Most prior research

Callan, Jamie

56

Efficient query processing in geographic web search engines  

Microsoft Academic Search

Geographic web search engines allow users to constrain and or- der search results in an intuitive manner by focusing a query on a particular geographic region. Geographic search technology, also called local search, has recently received significant interest from major search engine companies. Academic research in this area has focused primarily on techniques for extracting geographic knowl- edge from the

Yen-yu Chen; Torsten Suel; Alexander Markowetz

2006-01-01

57

(Nuclear power engineering in space)  

SciTech Connect

The principal purpose of this trip was to participate in the Anniversary Specialist Conference on Nuclear Power Engineering in Space hosted by the USSR Ministry of Atomic Power Engineering and Industry. The conference was held in Obninsk, USSR. A secondary purpose of the trip was to meet with the French Commissariat A L'Energie Atomique in Paris regarding the status of their space power program.

Cooper, R.H. Jr.

1990-06-18

58

Ontology driven image search engine  

NASA Astrophysics Data System (ADS)

Image collections are most often domain specific. We have developed a system for image retrieval of multimodal microscopy images. That is, the same object of study visualized with a range of microscope techniques and with a range of different resolutions. In microscopy, image content is depending on the preparation method of the object under study as well as the microscope technique. Both are taken into account in the submission phase as metadata whilst at the same time (domain specific) ontologies are employed as controlled vocabularies to annotate the image. From that point onward, image data are interrelated through the relationships derived from annotated concepts in the ontology. By using concepts and relationships of an ontology, complex queries can be built with true semantic content. Image metadata can be used as powerful criteria to query image data which are directly or indirectly related to original data. The results of image retrieval can be represented using a structural graph by exploiting relationships from ontology rather than a listed table. Applying this to retrieve images from the same subject at different levels of resolution opens a new field for the analysis of image content.

Bei, Yun; Dmitrieva, Julia; Belmamoune, Mounia; Verbeek, Fons J.

2007-01-01

59

A World Wide Web Search Engine Using Hyperlink Structure To Improve Web Searches  

E-print Network

Associate Professor Dean, Graduate School Computer Science and Software Engineering #12; ­ 2 ­ A World Wide­ 1 ­ A World Wide Web Search Engine Using Hyperlink Structure To Improve Web Searches Hong Fan ABSTRACT A World Wide Web Search Engine Using Link Structure To Improve Web Searches Hong Fan Master

60

NPSE: A High Performance Network Packet Search Engine  

Microsoft Academic Search

This paper describes the NPSE, a high-performance SRAM-based network packet search engine which has the primary application of supporting IPv4 and IPv6 forwarding. It is based on a high-speed hardware implementation of a tree-based storage and retrieval algorithm, which is memory and power-efficient compared to traditional CAM-based look-up methods.

Naresh Soni; Nick Richardson; Lun-Bin Huang; Suresh Rajgopal; George Vlantis

2003-01-01

61

Google's PageRank: The Math Behind the Search Engine  

E-print Network

Google's PageRank: The Math Behind the Search Engine Rebecca S. Wills Department of Mathematics on a given day. Even though there are many internet search engines, Google, Yahoo!, and MSN receive over 81 equals that of Google [11], Google continues to thrive as the search engine of choice receiving over 46

Lakoba, Taras I.

62

Document replication strategies for geographically distributed web search engines  

E-print Network

. Compared to a centralized, single-center search engine, this architecture offers lower query response times-scale web search engine architecture with multiple, geographically distributed data centers (Baeza- YatesDocument replication strategies for geographically distributed web search engines Enver Kayaaslan a

Aykanat, Cevdet

63

Automatically Mining Result Records from Search Engine Response Pages  

Microsoft Academic Search

Usually, Web applications such as deep Web crawlers, metasearch engines, and other Web mining systems need to extract information displayed in the form of result records on response pages returned by search engines in response to submitted queries. Extracting such records is challenging as search engines are heterogeneous in displaying their records. In addition, response pages returned by many search

Dheerendranath Mundluru; Jayasimha Reddy Katukuri; Saygin Celebi

2005-01-01

64

New Media? The Political Economy of Internet Search Engines  

Microsoft Academic Search

Abstract This paper presents a structural analysis of the Internet search engine market. Search engines are a core element of the Internet media system, topping the Nielsen NetRatings Top 10 list of online properties in every market measured,and generating advertising revenues of billions of dollars each year. Using a search engine is the most popular online activity after reading email.

Elizabeth Van Couvering; E. j. Van Couvering

65

Semantic internet search engine with focus on Arabic language  

Microsoft Academic Search

We present in this paper an Internet search engine with focus on the Arabic language. To develop such a search engine, we used regular document retrieval techniques and enhance them with a treatment on the semantic level of terms found in documents. This semantic process is integrated in the search stage of the search. We evaluated the developed system using

Naima Tazit; Hossin Bouyakhf; Souad Sabri; Abdellah Yousfi; Karim Bouzouba

66

iMed: An Intelligent Medical Web Search Engine  

Microsoft Academic Search

Searching for medical information on the Web is becoming popular and important these days. However, medical search has its own unique requirements that are not well handled by existing medical Web search engines. In this paper, we present iMed, the first intelligent medical Web search engine that extensively uses domain-specific medical knowledge and questionnaire to facilitate ordinary Internet users to

Gang Luo

67

Cryogenic engineering and fusion power  

Microsoft Academic Search

In order to reduce the consumption of power for the magnets of a fusion power plant to acceptable proportions, it is necessary that fusion reactors must use either cryogenically cooled or superconducting coils. The cryogenic aspects of reactor design are discussed. It is found that the most difficult cryogenic engineering problems of fusion reactors are mainly those caused by the

C. E. Taylor

1974-01-01

68

OncoSearch: cancer gene search engine with literature evidence  

PubMed Central

In order to identify genes that are involved in oncogenesis and to understand how such genes affect cancers, abnormal gene expressions in cancers are actively studied. For an efficient access to the results of such studies that are reported in biomedical literature, the relevant information is accumulated via text-mining tools and made available through the Web. However, current Web tools are not yet tailored enough to allow queries that specify how a cancer changes along with the change in gene expression level, which is an important piece of information to understand an involved gene's role in cancer progression or regression. OncoSearch is a Web-based engine that searches Medline abstracts for sentences that mention gene expression changes in cancers, with queries that specify (i) whether a gene expression level is up-regulated or down-regulated, (ii) whether a certain type of cancer progresses or regresses along with such gene expression change and (iii) the expected role of the gene in the cancer. OncoSearch is available through http://oncosearch.biopathway.org. PMID:24813447

Lee, Hee-Jin; Dang, Tien Cuong; Lee, Hyunju; Park, Jong C.

2014-01-01

69

Can an Ad-hoc ontology Beat a Medical Search Engine? The Chronious Search Engine case  

E-print Network

Chronious is an Open, Ubiquitous and Adaptive Chronic Disease Management Platform for Chronic Obstructive Pulmonary Disease(COPD) Chronic Kidney Disease (CKD) and Renal Insufficiency. It consists of several modules: an ontology based literature search engine, a rule based decision support system, remote sensors interacting with lifestyle interfaces (PDA, monitor touch-screen) and a machine learning module. All these modules interact each other to allow the monitoring of two types of chronic diseases and to help clinician in taking decision for care purpose. This paper illustrates how the ontology search engine was created and fed and how some comparative test indicated that the ontology based approach give better results, on some estimation parameters, than the main reference web search engine.

Giacomelli, Piero; Rosso, Roberto

2012-01-01

70

Towards Automatic Incorporation of Search engines into a Large-Scale Metasearch Engine  

E-print Network

Towards Automatic Incorporation of Search engines into a Large-Scale Metasearch Engine Zonghuan Wu. of Computer Science Univ. of Illinois at Chicago yu@cs.uic.edu Abstract A metasearch engine supports unified access to multiple component search engines. To build a very large-scale metasearch engine that can

Meng, Weiyi

71

A Search Engine for Complex XML Queries Leonidas Fegaras  

E-print Network

A Search Engine for Complex XML Queries Leonidas Fegaras Department of Computer Science proposals for XML languages now that allow queries over the whole Internet, as is done by current web search search engines. One may wonder how feasible it is to evaluate XML queries that join web documents

Fegaras, Leonidas

72

Comparing Web search engine performance in searching consumer health information: evaluation and recommendations.  

PubMed Central

Identifying and accessing reliable, relevant consumer health information rapidly on the Internet may challenge the health sciences librarian and layperson alike. In this study, seven search engines are compared using representative consumer health topics for their content relevancy, system features, and attributes. The paper discusses evaluation criteria; systematically compares relevant results; analyzes performance in terms of the strengths and weaknesses of the search engines; and illustrates effective search engine selection, search formulation, and strategies. PMID:10550031

Wu, G; Li, J

1999-01-01

73

Correlation of Music Charts and Search Engine Rankings Martin Klein  

E-print Network

. A related experiment on the correlation of rankings of US college football teams can be found in [2]. WeCorrelation of Music Charts and Search Engine Rankings Martin Klein Department of Computer Science the question whether expert rankings of real- world entities correlate with search engine (SE) rankings

Nelson, Michael L.

74

The relationship between search based software engineering and predictive modeling  

Microsoft Academic Search

Search Based Software Engineering (SBSE) is an approach to software engineering in which search based optimization algorithms are used to identify optimal or near optimal solutions and to yield insight. SBSE techniques can cater for multiple, possibly competing objectives and\\/ or constraints and applications where the potential solution space is large and complex. This paper will provide a brief overview

Mark Harman

2010-01-01

75

IntegromeDB: an integrated system and biological search engine  

PubMed Central

Background With the growth of biological data in volume and heterogeneity, web search engines become key tools for researchers. However, general-purpose search engines are not specialized for the search of biological data. Description Here, we present an approach at developing a biological web search engine based on the Semantic Web technologies and demonstrate its implementation for retrieving gene- and protein-centered knowledge. The engine is available at http://www.integromedb.org. Conclusions The IntegromeDB search engine allows scanning data on gene regulation, gene expression, protein-protein interactions, pathways, metagenomics, mutations, diseases, and other gene- and protein-related data that are automatically retrieved from publicly available databases and web pages using biological ontologies. To perfect the resource design and usability, we welcome and encourage community feedback. PMID:22260095

2012-01-01

76

StreetEYE: Wall St. Search Engine  

NSDL National Science Digital Library

StreetEYE attempts to bring together every important investment and financial resource on the Internet into a neatly arranged structure, organized by topic and subtopic, and supplemented by a search engine. The frames-based main page provides a consistent, easily navigated front end for browsing resources. An alternate main page presents the same information in tabular form for those without frame capability. The news and quotes & graphs pages provide links to sites offering both up-to-the-minute and archival data. The exchanges page lists many of the world's financial markets, with links to details about brokers, banks, investment managers, and other market participants. Users will also find information about government and commercial information providers, nonprofit institutions, and other financial resources. Individual investors can browse a collection of personal finance topics, as well as selected non-financial resources. The entries in each listing are arranged by topic, but are not annotated with information about what the user will find at individual sites. Even if you're already using the Internet to gather investment information, this site will help you to keep up with current offerings.

77

A Search Engine Log Analysis of Music-Related Web Searching  

Microsoft Academic Search

\\u000a We explore music search behavior by identifying music-related queries in a large (over 20 million queries) search engine log,\\u000a gathered over three months in 2006. Music searching is a significant information behavior: approximately 15% of users conduct\\u000a at least one music search in the time period studied, and approximately 1.35% of search activities are connected to music.\\u000a We describe the

Sally Jo Cunningham; David Bainbridge

2010-01-01

78

Social media networking: YouTube and search engine optimization.  

PubMed

This is the third part of a three-part article on social media networking. This installment will focus on YouTube and search engine optimization. This article will explore the application of YouTube to the medical practice and how YouTube can help a practice retain its existing patients and attract new patients to the practice. The article will also describe the importance of search engine optimization and how to make your content appear on the first page of the search engines such as Google, Yahoo, and YouTube. PMID:21506470

Jackson, Rem; Schneider, Andrew; Baum, Neil

2011-01-01

79

Simulation of Distributed Search Engines: Comparing Term, Document and Hybrid Distribution1  

E-print Network

Simulation of Distributed Search Engines: Comparing Term, Document and Hybrid Distribution1 Andrew. Such a scheme could easily be deployed in a web search engine. General Terms Algorithms, Measurement, Performance, Design, Experimentation. Keywords Search Engine, Information Retrieval, Term Distribution

Waterloo, University of

80

Stirling engines. (Latest citations from the Aerospace database). Published Search  

SciTech Connect

The bibliography contains citations concerning fuel consumption, engine design and testing, computerized simulation, and lubrication systems relative to the Stirling cycle engine. Solar energy conversion research, thermodynamic efficiency, economics, and utilization for power generation and automobile engines are included. Materials used in Stirling engines are briefly evaluated. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1993-09-01

81

Search Engine Watch: Google's New Look & New File Types  

NSDL National Science Digital Library

Some of our readers may already have noticed that Google (last mentioned in the July 20, 2001 Scout Report) is sporting a new look these days. Running along the top of the search page are now four tabs: Web, Images, Groups (newsgroups), and Directory (Open Directory's human-selected listings) that enable users to see different sets of search results. We reported on the Beta version of Google's image search engine in the June 29, 2001 Scout Report and find its results quite good. The Search Engine Report covers these latest improvements to Google.

Sullivan, Danny.

2001-01-01

82

NEW FACULTY SEARCHES IN MECHANICAL ENGINEERING  

E-print Network

of faculty over the next three years. It is expected that the faculty will expand by 25% with ten new tenure-track tenure-track positions in mechanical engineering and two tenure-track positions in nuclear engineering engineering, or a related field. The Department is home to 50 faculty, 270 graduate students, and 1000

83

Power and Energy Engineering Workforce Collaborative  

E-print Network

#12;44 Engineering Workforce Employees Exiting 46% of electric utility engineering jobs could to the bulk power system reliability, exacerbated by the lack of new recruits entering the field. Recognition

84

An Analysis of Internet Search Engines: Assessment of Over 200 Search Queries.  

ERIC Educational Resources Information Center

Describes a study of the retrieval results of World Wide Web search engines. Research quantified accurate matches versus matches of arguable quality for 200 subjects relevant to undergraduate curricula. Both "evaluative" engines (Magellan, Point Communications) and "nonevaluative" engines (Lycos, InfoSeek, AltaVista) were examined. Taking into…

Tomaiuolo, Nicholas G.; Packer, Joan G.

1996-01-01

85

Review of electric power engineering education worldwide  

Microsoft Academic Search

The Power Engineering Education Committee sponsored panel session gives an outline of the status of electric power system education in different countries of the world. Graduate and undergraduate electrical power engineering programs typical to a particular country are described. The descriptions include the concepts of graduate and undergraduate education, typical courses and laboratory schedules, tutorials, credits or number of courses

G. G. Karady; G. T. Heydt; M. Michel; P. Crossley; H. Rudnick; S. Iwamoto

1999-01-01

86

ArraySearch: A Web-Based Genomic Search Engine  

PubMed Central

Recent advances in microarray technologies have resulted in a flood of genomics data. This large body of accumulated data could be used as a knowledge base to help researchers interpret new experimental data. ArraySearch finds statistical correlations between newly observed gene expression profiles and the huge source of well-characterized expression signatures deposited in the public domain. A search query of a list of genes will return experiments on which the genes are significantly up- or downregulated collectively. Searches can also be conducted using gene expression signatures from new experiments. This resource will empower biological researchers with a statistical method to explore expression data from their own research by comparing it with expression signatures from a large public archive. PMID:22474412

Wilson, Tyler J.; Ge, Steven X.

2012-01-01

87

A SessionBased Search Engine Smitha Sriram, Xuehua Shen, Chengxiang Zhai  

E-print Network

closeness and probabilis­ tic similarity between query terms. In addition, the search engine visualizesA Session­Based Search Engine Smitha Sriram, Xuehua Shen, Chengxiang Zhai Department of Computer­based search engine, which puts the search in context. The search engine has a number of session­based features

Zhai, ChengXiang

88

Search Engine-Crawler Symbiosis: Adapting to Community Interests  

E-print Network

Search Engine-Crawler Symbiosis: Adapting to Community Interests Gautam Pant, Shannon Bradshaw the crawler to better its performance. We show that the symbiosis can help the system learn about a community

Bradshaw, Shannon

89

40 CFR 1042.140 - Maximum engine power, displacement, power density, and maximum in-use engine speed.  

Code of Federal Regulations, 2010 CFR

...Maximum engine power, displacement, power density, and maximum in-use engine speed...Maximum engine power, displacement, power density, and maximum in-use engine speed...engine power, displacement, and power density of an engine for the purposes of...

2010-07-01

90

40 CFR 1042.140 - Maximum engine power, displacement, power density, and maximum in-use engine speed.  

Code of Federal Regulations, 2011 CFR

...Maximum engine power, displacement, power density, and maximum in-use engine speed...Maximum engine power, displacement, power density, and maximum in-use engine speed...engine power, displacement, and power density of an engine for the purposes of...

2011-07-01

91

Issues confronting power engineering education today  

SciTech Connect

This paper summarizes and publicizes some of the issues currently confronting power engineering education today. The issues are grouped into four general topics. The first topic has the same name as the title of this paper and includes a variety of general issues. The second topic involves the impact of emerging technologies on power engineering education. The third topic involves university research and its funding. The final topic involves philosophical differences about power engineering education from the viewpoint of industry and the university.

Lamont, J.W. (Iowa State Univ. of Science and Technology, Ames, IA (USA)); Alvarado, F.L. (Wisconsin Univ., Madison, WI (USA)); Heydt, G.T. (Purdue Univ., Lafayette, IN (USA)); Saver, P.W. (Illinois Univ., Urbana, IL (USA))

1989-01-01

92

Paying Your Way to the Top: Search Engine Advertising.  

ERIC Educational Resources Information Center

Explains how organizations can buy listings on major Web search engines, making it the fastest growing form of advertising. Highlights include two network models, Google and Overture; bidding on phrases to buy as links to use with ads; ad ranking; benefits for small businesses; and paid listings versus regular search results. (LRW)

Scott, David M.

2003-01-01

93

XSeek: A Semantic XML Search Engine Using Keywords  

Microsoft Academic Search

We present XSeek, a keyword search engine that enables users to easily access XML data without the need of learn- ing XPath or XQuery and studying possibly complex data schemas. XSeek addresses a challenge in XML keyword search that has been neglected in the literature: how to determine the desired return information, analogous to in- ferring a \\

Ziyang Liu; Jeffrey Walker; Yi Chen

2007-01-01

94

Electric power engineering education resources 1993-94: IEEE Power Engineering Society Committee report  

Microsoft Academic Search

This subcommittee report is based on the thirteenth biennial survey of power engineering education resources in the US and Canada, eleven of which have bees previously published. This survey is conducted to determine the electric power engineering education resources available in ABET (Accreditation Board for Engineering and Technology) accredited engineering programs in the US and Canada for the 1993-94 academic

R. L. King; M. E. El-Hawary; M. T. Glinkowski; C. Grigg; C. A. Gross; V. Rajagopalan; T. G. Schmehl; T. S. Sidhu; R. J. Thomas; D. O. Wiitanen; S. M. Yousif

1996-01-01

95

A TeXQuery-based XML full-text search engine  

Microsoft Academic Search

We demonstrate an XML full-text search engine that implements the TeXQuery language. TeXQuery is a powerful full-text search extension to XQuery that provides a rich set of fully composable full-text primitives, such as phrase matching, proximity distance, stemming and thesauri. TeXQuery enables users to seamlessly query over both structure data and text, by embedding full-text primitives in XQuery and vice

Chavdar Botev; Sihem Amer-Yahia; Jayavel Shanmugasundaram

2004-01-01

96

Stirling engines. (Latest citations from the COMPENDEX database). Published Search  

SciTech Connect

The bibliography contains citations concerning Stirling engine technology. Design, development, performance testing, and applications are discussed, including power generation, cryogenic cooling, solar power applications, and ground and marine vehicles. The citations also examine engine component design and material testing results. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1992-12-01

97

A New Archive and Internet Search Engine May Change the Nature of On-Line Research.  

ERIC Educational Resources Information Center

In the process of trying to preserve Internet history by archiving it, a company has developed a powerful Internet search engine that provides information on Web site usage patterns, which can act as a relatively objective source of information about information sources and can link sources that a researcher might otherwise miss. However, issues…

Selingo, Jeffrey

1998-01-01

98

Restricting the View and Connecting the Dots - Dangers of a Web Search Engine Monopoly  

Microsoft Academic Search

Everyone realizes how powerful the few big Web search engine companies have become, both in terms of financial resources due to soaring stock quotes and in terms of the still hidden value of the wealth of information available to them. Following the common belief that \\

Narayanan Kulathuramaiyer; Wolf-tilo Balke

2006-01-01

99

Adaptation of Uniqueness Metric (SeRUM) to enhance analogous patents search engine and innovation acceleration  

E-print Network

Adaptation of Uniqueness Metric (SeRUM) to enhance analogous patents search engine and innovation of innovation. The analogous patent search engine "Analogy Finder", created by Dr. Anthony McCaffrey, enables engineers to search the patent database more accurately. The search engine uses a standardized syntax

Mountziaris, T. J.

100

Brand and its Effect on User Perception of Search Engine Performance  

E-print Network

Brand and its Effect on User Perception of Search Engine Performance Bernard J. Jansen and Mimi investigate the effect of search engine brand on the evaluation of searching performance. Our research is motivated by the large amount of search traf- fic directed to a handful of Web search engines, even though

Jansen, James

101

Do search terms matter for online consumers? The interplay between search engine query specification and topical organization  

Microsoft Academic Search

The Internet has become the primary source of information for a large number of consumers. Thus, search engines as the mediators between consumers and online information is an increasingly important topic of research. The present study contributes specifically to the research in consumer search and decision-making by investigating how a search engine's support for topical organization of search results can

Nanda Kumar; Karl Reiner Lang

2007-01-01

102

Health literacy and usability of clinical trial search engines.  

PubMed

Several web-based search engines have been developed to assist individuals to find clinical trials for which they may be interested in volunteering. However, these search engines may be difficult for individuals with low health and computer literacy to navigate. The authors present findings from a usability evaluation of clinical trial search tools with 41 participants across the health and computer literacy spectrum. The study consisted of 3 parts: (a) a usability study of an existing web-based clinical trial search tool; (b) a usability study of a keyword-based clinical trial search tool; and (c) an exploratory study investigating users' information needs when deciding among 2 or more candidate clinical trials. From the first 2 studies, the authors found that users with low health literacy have difficulty forming queries using keywords and have significantly more difficulty using a standard web-based clinical trial search tool compared with users with adequate health literacy. From the third study, the authors identified the search factors most important to individuals searching for clinical trials and how these varied by health literacy level. PMID:25315593

Utami, Dina; Bickmore, Timothy W; Barry, Barbara; Paasche-Orlow, Michael K

2014-10-01

103

A Domain Specific Ontology Based Semantic Web Search Engine  

E-print Network

Since its emergence in the 1990s the World Wide Web (WWW) has rapidly evolved into a huge mine of global information and it is growing in size everyday. The presence of huge amount of resources on the Web thus poses a serious problem of accurate search. This is mainly because today's Web is a human-readable Web where information cannot be easily processed by machine. Highly sophisticated, efficient keyword based search engines that have evolved today have not been able to bridge this gap. So comes up the concept of the Semantic Web which is envisioned by Tim Berners-Lee as the Web of machine interpretable information to make a machine processable form for expressing information. Based on the semantic Web technologies we present in this paper the design methodology and development of a semantic Web search engine which provides exact search results for a domain specific search. This search engine is developed for an agricultural Website which hosts agricultural information about the state of West Bengal.

Mukhopadhyay, Debajyoti; Mukherjee, Sreemoyee; Bhattacharya, Jhilik; Kim, Young-Chon

2011-01-01

104

Web Search Engines FAQS: Questions, Answers, and Issues  

NSDL National Science Digital Library

The October issue of Searcher magazine offers this article by Gary Price, Web searcher extraordinaire (see the October 3, 1997 Scout Report). The article, which "reviews the latest goings on in the search world and tries to provide some suggestions and tools to make you more knowledgeable and save you some time," is, as one might expect from Price, clear and detailed in its review of the latest in search engines and the like. Running down the side of the page are "Price's Priceless Tips," including Ten Things to Know about Google (AllTheWeb, Altavista, etc.) and information on new search tools. There is a wealth of useful information here.

Price, Gary.

2001-01-01

105

Embedding remote experimentation in power engineering education  

Microsoft Academic Search

Engineering education by its nature is a costly program in university environments. Perhaps the most costly component is the laboratory facility, usually consisting of specialized equipment. Effective instruction of some topics in power engineering education requires experience with actual equipment, rather than small-scale replicas or simulation. In this paper, a new laboratory approach is described, as implemented in a virtual,

Mihaela M. Albu; Keith E. Holbert; Gerald Thomas Heydt; Sorin Dan Grigorescu; V. Trusca

2004-01-01

106

Chemical engineering side of nuclear fusion power  

Microsoft Academic Search

It is widely recognized that chemical engineering has important roles to play in the development of national and world wide energy resources through optimal utilization of fossil fuel reserves. It is much less appreciated that there are crucial chemical engineering problems in the development of energy production from other sources. In particular the successful development of nuclear fusion power generating

E. F. Johnson

1976-01-01

107

Hierarchical Structural Approach to Improving the Browsability of Web Search Engine Results  

E-print Network

Hierarchical Structural Approach to Improving the Browsability of Web Search Engine Results Hang,zaiane}@cs.ualberta.ca Abstract Web users have been mainly relying on Web search engines to find information of interest on the Web. However, two key issues remain with traditional Web search engines: the browsability of searching

Zaiane, Osmar R.

108

PR Students' Perceptions and Readiness for Using Search Engine Optimization  

ERIC Educational Resources Information Center

Enough evidence is available to support the idea that public relations professionals must possess search engine optimization (SEO) skills to assist clients in a full-service capacity; however, little research exists on how much college students know about the tactic and best practices for incorporating SEO into course curriculum. Furthermore, much…

Moody, Mia; Bates, Elizabeth

2013-01-01

109

Detecting influenza epidemics using search engine Jeremy Ginsberg1  

E-print Network

Detecting influenza epidemics using search engine query data Jeremy Ginsberg1 , Matthew H. Mohebbi1 for Disease Control and Prevention Epidemics of seasonal influenza are a major public health concern, causing . In addition to seasonal influenza, a new strain of influenza virus against which no prior immunity exists

Tomkins, Andrew

110

A Competitive and Experiential Assignment in Search Engine Optimization Strategy  

ERIC Educational Resources Information Center

Despite an increase in ad spending and demand for employees with expertise in search engine optimization (SEO), methods for teaching this important marketing strategy have received little coverage in the literature. Using Bloom's cognitive goals hierarchy as a framework, this experiential assignment provides a process for educators who may be…

Clarke, Theresa B.; Clarke, Irvine, III

2014-01-01

111

Search Engine Technologies name ________________ CS 5319, Spring 2007  

E-print Network

questions" hoping to find questions to use for studying. 2. [4] Pick two of the above scenarios where] Of the following uses of search engines, which is the most common? the least common? a. trying to get/use. crawling b. indexing c. computing PageRank d. term weighting using tf-idf 5. [6] Suppose that documents

Ward, Nigel

112

Virage Image Search Engine: An Open Framework for Image Management  

Microsoft Academic Search

Until recently, the management of large image databases has relied exclusively on manually entered alphanumeric annotations. Systems are beginning to emerge in both the research and commercial sectors based on 'content-based' image retrieval, a technique which explicitly manages image assets by directly representing their visual attributes. The Virage image search engine provides an open framework for building such systems. The

Jeffrey R. Bach; Charles Fuller; Amarnath Gupta; Arun Hampapur; Bradley Horowitz; Rich Humphrey; Ramesh Jain; Chiao-Fe Shu

1996-01-01

113

A nonredundant ternary CAM circuit for network search engines  

Microsoft Academic Search

An optimized Ternary CAM concept is introduced for the hardware search engines in high-speed Internet routers. Our design employs w + 1 RAM bits to store a word of size w, whereas a conventional TCAM needs 2w RAM bits for the same word size. Based on this concept an 8-bit cluster is designed out of 9 SRAM bits, used as

Mohammad J. Akhbarizadeh; Mehrdad Nourani; Deepak S. Vijayasarathi; T. Balsara

2006-01-01

114

Augmenting OAI-PMH repository holdings using search engine APIs  

Microsoft Academic Search

In this poster, we give the preliminary results of our project to acquire Atmospheric Science Data Center (ASDC) project- related web resources, not with focused crawling, but by us- ing the search engine (SE) APIs directly. We aggregate the results and create archive-ready complex objects. Categories and Subject Descriptors: H.3.7 Information

Martin Klein; Michael L. Nelson; Juliet Z. Pao

2007-01-01

115

A Novel Interdisciplinary Approach to Deep Web Search Engine  

Microsoft Academic Search

Summary In this paper, we will discuss on the strategic issues of exploring, harvesting and integrating the Deep Web. We will then develop a novel interdisciplinary stochastic model for a Deep Web Search Engine which can detect and rank the contents optimally. Our efforts aim at opening up to users by building Generator. On this information grand voyage, the Generator

Pyke Tin; Thi Thi Zin; Hiromitsu Hama

116

CXLEngine: a comprehensive XML loosely structured search engine  

Microsoft Academic Search

We proposed previously in [9] an XML semantic search engine called OOXSearch, which answers loosely structured queries. It takes into account the semantic relationships between data elements based on their contexts. The context of a data element is determined by its parent element. The framework of OOXSearch treats each parent-children set of elements as a single unified entity. OOXSearch works

Kamal Taha; Ramez Elmasri

2008-01-01

117

WebPosition Gold Search Engine and Web Promotion Software  

NSDL National Science Digital Library

A product of FirstPlace Software, WebPosition Gold provides a way to increase traffic to your Web site without spending advertising dollars. WebPosition Gold generates HTML pages designed to rank near the top of search results, analyzes existing Web pages, gives advice on how to improve upon pages, assists in uploading new and changed pages, automatically submits pages to major search engines, and reports positions on each search engine for each keyword targeted. It also tracks the number of visitors to your site, where they came from, and what keywords they used to access the site. Before trying the working free trial version of WebPosition Gold, users must register (name and e-mail address) for notification of any product announcements or new updates. However, users may unsubscribe at any time.

1997-01-01

118

International Security Network (ISN) Limited Area Search Engine (LASE)  

NSDL National Science Digital Library

ISN, the International Relations and Security Network (described in the June 16, 1998 Scout Report for Social Sciences), has recently introduced an extremely useful full text Limited Area Search Engine (LASE) in the field of international relations and security. The Eurospider search engine behind ISN LASE currently searches and retrieves documents from 150 selected sites; supports English, French, German, and Italian; and offers options such as "high-quality ranklists, highlighting of matched query terms, relevance feedback, and other advanced features." In addition to a very speedy retrieval of selected documents, the ISN LASE provides links to the original source. The ISN's guidelines for selecting sites to include in the LASE are listed in the ISN LASE Policies section.

119

14 CFR 121.191 - Airplanes: Turbine engine powered: En route limitations: One engine inoperative.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 false Airplanes: Turbine engine powered: En route... § 121.191 Airplanes: Turbine engine powered: En route...a) No person operating a turbine engine powered airplane...is used to allow for adverse winds: (4) Fuel...

2011-01-01

120

14 CFR 121.191 - Airplanes: Turbine engine powered: En route limitations: One engine inoperative.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Airplanes: Turbine engine powered: En route... § 121.191 Airplanes: Turbine engine powered: En route...a) No person operating a turbine engine powered airplane...is used to allow for adverse winds: (4) Fuel...

2013-01-01

121

14 CFR 121.191 - Airplanes: Turbine engine powered: En route limitations: One engine inoperative.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Airplanes: Turbine engine powered: En route... § 121.191 Airplanes: Turbine engine powered: En route...a) No person operating a turbine engine powered airplane...is used to allow for adverse winds: (4) Fuel...

2012-01-01

122

14 CFR 121.191 - Airplanes: Turbine engine powered: En route limitations: One engine inoperative.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Airplanes: Turbine engine powered: En route... § 121.191 Airplanes: Turbine engine powered: En route...a) No person operating a turbine engine powered airplane...is used to allow for adverse winds: (4) Fuel...

2010-01-01

123

14 CFR 121.191 - Airplanes: Turbine engine powered: En route limitations: One engine inoperative.  

...2014-01-01 false Airplanes: Turbine engine powered: En route... § 121.191 Airplanes: Turbine engine powered: En route...a) No person operating a turbine engine powered airplane...is used to allow for adverse winds: (4) Fuel...

2014-01-01

124

Improving Search Quality of an XML Context-Driven Search Engine by Relabling of Canonical Trees  

Microsoft Academic Search

XCD Search-An XML Context-driven Search Engine answers both Keyword-based and Context-driven queries using stack-based sort merge algorithm. It performs well with all criteria of queries against XML trees, except queries submitted against a document, whose XML tree contains a parent node and child interior node, both having same Taxonomic Label and both have child\\/children data node(s) and\\/or attribute(s). In this

Suhas B. Bhagate

2011-01-01

125

A Search Engine That's Aware of Your Needs  

NASA Technical Reports Server (NTRS)

Internet research can be compared to trying to drink from a firehose. Such a wealth of information is available that even the simplest inquiry can sometimes generate tens of thousands of leads, more information than most people can handle, and more burdensome than most can endure. Like everyone else, NASA scientists rely on the Internet as a primary search tool. Unlike the average user, though, NASA scientists perform some pretty sophisticated, involved research. To help manage the Internet and to allow researchers at NASA to gain better, more efficient access to the wealth of information, the Agency needed a search tool that was more refined and intelligent than the typical search engine. Partnership NASA funded Stottler Henke, Inc., of San Mateo, California, a cutting-edge software company, with a Small Business Innovation Research (SBIR) contract to develop the Aware software for searching through the vast stores of knowledge quickly and efficiently. The partnership was through NASA s Ames Research Center.

2005-01-01

126

Brayton engines for dispersed solar power  

NASA Technical Reports Server (NTRS)

This paper describes the procedures being used to characterize and to analyze Brayton cycle gas turbines for application in dispersed solar electrical power plants whose cost of electricity is economically viable. Three Brayton engine types are under consideration - atmospheric (an open cycle engine), subatmospheric (also an open cycle engine) and the closed cycle engine. This analysis will be utilized to identify and select suitable candidates from existing engine configurations for near-term system demonstrations and to define optimum configurations for production in the 1990 era. Engine designs are being targeted to a system specific capital cost goal of 1000 dollars per design kilowatt, a value believed to make the cost of solar generated electricity competitive.

Ashe, T. L.; Six, L. D.

1979-01-01

127

Search for alternative automotive power sources  

Microsoft Academic Search

A brief technology assessment is given of alternative propulsion systems for automobiles. Reciprocating and rotary (Wankel) spark ignition engines, diesel engines, gas turbines, Rankine cycle engines, and electric propulsion are discussed. Various research programs are reviewed with respect to engine design factors and emission control. (PMA)

R. H. Eshelman; H. M. Nelson; J. B. Pond

1973-01-01

128

The Way to Increased Airplane Engine Power  

NASA Technical Reports Server (NTRS)

The purpose of this paper is to give an outline of the present state of development and point out the possibilities available for the further increase in the power/displacement ratio, the economy, and the reliability of the engine. Some of the aspects discussed are methods of increasing take-off power, the various methods of preparation of the fuel mixture and their effect on power, economy, and safety.

Vohrer, Eugen

1939-01-01

129

Next-Generation Search Engines for Information Retrieval  

SciTech Connect

In the recent years, there have been significant advancements in the areas of scientific data management and retrieval techniques, particularly in terms of standards and protocols for archiving data and metadata. Scientific data is rich, and spread across different places. In order to integrate these pieces together, a data archive and associated metadata should be generated. Data should be stored in a format that can be retrievable and more importantly it should be in a format that will continue to be accessible as technology changes, such as XML. While general-purpose search engines (such as Google or Bing) are useful for finding many things on the Internet, they are often of limited usefulness for locating Earth Science data relevant (for example) to a specific spatiotemporal extent. By contrast, tools that search repositories of structured metadata can locate relevant datasets with fairly high precision, but the search is limited to that particular repository. Federated searches (such as Z39.50) have been used, but can be slow and the comprehensiveness can be limited by downtime in any search partner. An alternative approach to improve comprehensiveness is for a repository to harvest metadata from other repositories, possibly with limits based on subject matter or access permissions. Searches through harvested metadata can be extremely responsive, and the search tool can be customized with semantic augmentation appropriate to the community of practice being served. One such system, Mercury, a metadata harvesting, data discovery, and access system, built for researchers to search to, share and obtain spatiotemporal data used across a range of climate and ecological sciences. Mercury is open-source toolset, backend built on Java and search capability is supported by the some popular open source search libraries such as SOLR and LUCENE. Mercury harvests the structured metadata and key data from several data providing servers around the world and builds a centralized index. The harvested files are indexed against SOLR search API consistently, so that it can render search capabilities such as simple, fielded, spatial and temporal searches across a span of projects ranging from land, atmosphere, and ocean ecology. Mercury also provides data sharing capabilities using Open Archive Initiatives Protocol for Metadata Handling (OAI-PMH). In this paper we will discuss about the best practices for archiving data and metadata, new searching techniques, efficient ways of data retrieval and information display.

Devarakonda, Ranjeet [ORNL; Hook, Leslie A [ORNL; Palanisamy, Giri [ORNL; Green, James M [ORNL

2011-01-01

130

FPS-RAM: Fast Prefix Search RAM-Based Hardware for Forwarding Engine  

NASA Astrophysics Data System (ADS)

Ternary content addressable memory (TCAM) is becoming very popular for designing high-throughput forwarding engines on routers. However, TCAM has potential problems in terms of hardware and power costs, which limits its ability to deploy large amounts of capacity in IP routers. In this paper, we propose new hardware architecture for fast forwarding engines, called fast prefix search RAM-based hardware (FPS-RAM). We designed FPS-RAM hardware with the intent of maintaining the same search performance and physical user interface as TCAM because our objective is to replace the TCAM in the market. Our RAM-based hardware architecture is completely different from that of TCAM and has dramatically reduced the costs and power consumption to 62% and 52%, respectively. We implemented FPS-RAM on an FPGA to examine its lookup operation.

Zaitsu, Kazuya; Yamamoto, Koji; Kuroda, Yasuto; Inoue, Kazunari; Ata, Shingo; Oka, Ikuo

131

The XSet XML Search Engine and XBench XML Query Benchmark  

Microsoft Academic Search

The XSet XML Search Engine and XBench XML Query BenchmarkbyBen Yanbin ZhaoMaster of Science in Computer ScienceUniversity of California at BerkeleyProfessor Anthony D. Joseph, ChairInternet-scale distributed applications (such as wide-area service and device discoveryand location, user preference management, Domain Name Service) impose interestingrequirements on information storage, management, and retrieval. They maintain structuredsoft-state and pose numerous queries against...

Ben Yanbin Zhao

2000-01-01

132

XCDSearch: An XML Context-Driven Search Engine  

Microsoft Academic Search

We present in this paper, a context-driven search engine called XCDSearch for answering XML Keyword-based queries as well as Loosely Structured queries, using a stack-based sort-merge algorithm. Most current research is focused on building relationships between data elements based solely on their labels and proximity to one another, while overlooking the contexts of the elements, which may lead to erroneous

Kamal Taha; Ramez Elmasri

2010-01-01

133

The LAILAPS search engine: relevance ranking in life science databases.  

PubMed

Search engines and retrieval systems are popular tools at a life science desktop. The manual inspection of hundreds of database entries, that reflect a life science concept or fact, is a time intensive daily work. Hereby, not the number of query results matters, but the relevance does. In this paper, we present the LAILAPS search engine for life science databases. The concept is to combine a novel feature model for relevance ranking, a machine learning approach to model user relevance profiles, ranking improvement by user feedback tracking and an intuitive and slim web user interface, that estimates relevance rank by tracking user interactions. Queries are formulated as simple keyword lists and will be expanded by synonyms. Supporting a flexible text index and a simple data import format, LAILAPS can easily be used both as search engine for comprehensive integrated life science databases and for small in-house project databases. With a set of features, extracted from each database hit in combination with user relevance preferences, a neural network predicts user specific relevance scores. Using expert knowledge as training data for a predefined neural network or using users own relevance training sets, a reliable relevance ranking of database hits has been implemented. In this paper, we present the LAILAPS system, the concepts, benchmarks and use cases. LAILAPS is public available for SWISSPROT data at http://lailaps.ipk-gatersleben.de. PMID:20134080

Lange, Matthias; Spies, Karl; Bargsten, Joachim; Haberhauer, Gregor; Klapperstück, Matthias; Leps, Michael; Weinel, Christian; Wünschiers, Röbbe; Weissbach, Mandy; Stein, Jens; Scholz, Uwe

2010-01-01

134

EVALUATION OF A VISUALLY CATEGORIZED SEARCH ENGINE Berrin Dogusoy, Kursat Cagiltay  

E-print Network

EVALUATION OF A VISUALLY CATEGORIZED SEARCH ENGINE Berrin Dogusoy, Kursat Cagiltay Department and the search engines are becoming an indispensable tool in order to find information in Internet. While web, the intensive workload requires that people should use the time properly. Using search engines effectively turns

Paris-Sud XI, Université de

135

DOCODE-Lite: A Meta-Search Engine for Document Similarity Retrieval  

E-print Network

architecture can retrieve similar documents by using the main search engines. In particular, the document architecture that given a text passage source, using different search engines, retrieves from the Web similarDOCODE-Lite: A Meta-Search Engine for Document Similarity Retrieval Felipe Bravo-Marquez1 , Gaston

Guerrero, Luis

136

Brand and its Effect on User Perception of Search Engine Performance  

Microsoft Academic Search

In this research we investigate the effect of search engine brand on the evaluation of searching performance. Our research is motivated by the large amount of search traf- fic directed to a handful of Web search engines, even though many have similar interfaces and performance. We conducted a laboratory experiment with 32 partic- ipants using a 4 2 factorial design

Bernard J. Jansen; Mimi Zhang; Carsten D. Schultz

2009-01-01

137

Space power demonstrator engine, phase 1  

NASA Technical Reports Server (NTRS)

The design, analysis, and preliminary test results for a 25 kWe Free-Piston Stirling engine with integral linear alternators are described. The project is conducted by Mechanical Technology under the direction of LeRC as part of the SP-100 Nuclear Space Power Systems Program. The engine/alternator system is designed to demonstrate the following performance: (1) 25 kWe output at a specific weight less than 8 kg/kW; (2) 25 percent efficiency at a temperature ratio of 2.0; (3) low vibration (amplitude less than .003 in); (4) internal gas bearings (no wear, no external pump); and (5) heater temperature/cooler temperature from 630 to 315 K. The design approach to minimize vibration is a two-module engine (12.5 kWe per module) in a linearly-opposed configuration with a common expansion space. The low specific weight is obtained at high helium pressure (150 bar) and high frequency (105 Hz) and by using high magnetic strength (samarium cobalt) alternator magnets. Engine tests began in June 1985; 16 months following initiation of engine and test cell design. Hydrotest and consequent engine testing to date has been intentionally limited to half pressure, and electrical power output is within 15 to 20 percent of design predictions.

1987-01-01

138

Space power demonstrator engine, phase 1  

NASA Astrophysics Data System (ADS)

The design, analysis, and preliminary test results for a 25 kWe Free-Piston Stirling engine with integral linear alternators are described. The project is conducted by Mechanical Technology under the direction of LeRC as part of the SP-100 Nuclear Space Power Systems Program. The engine/alternator system is designed to demonstrate the following performance: (1) 25 kWe output at a specific weight less than 8 kg/kW; (2) 25 percent efficiency at a temperature ratio of 2.0; (3) low vibration (amplitude less than .003 in); (4) internal gas bearings (no wear, no external pump); and (5) heater temperature/cooler temperature from 630 to 315 K. The design approach to minimize vibration is a two-module engine (12.5 kWe per module) in a linearly-opposed configuration with a common expansion space. The low specific weight is obtained at high helium pressure (150 bar) and high frequency (105 Hz) and by using high magnetic strength (samarium cobalt) alternator magnets. Engine tests began in June 1985; 16 months following initiation of engine and test cell design. Hydrotest and consequent engine testing to date has been intentionally limited to half pressure, and electrical power output is within 15 to 20 percent of design predictions.

1987-05-01

139

Noesis: Ontology based Scoped Search Engine and Resource Aggregator for Atmospheric Science  

NASA Astrophysics Data System (ADS)

The goal for search engines is to return results that are both accurate and complete. The search engines should find only what you really want and find everything you really want. Search engines (even meta search engines) lack semantics. The basis for search is simply based on string matching between the user's query term and the resource database and the semantics associated with the search string is not captured. For example, if an atmospheric scientist is searching for "pressure" related web resources, most search engines return inaccurate results such as web resources related to blood pressure. In this presentation Noesis, which is a meta-search engine and a resource aggregator that uses domain ontologies to provide scoped search capabilities will be described. Noesis uses domain ontologies to help the user scope the search query to ensure that the search results are both accurate and complete. The domain ontologies guide the user to refine their search query and thereby reduce the user's burden of experimenting with different search strings. Semantics are captured by refining the query terms to cover synonyms, specializations, generalizations and related concepts. Noesis also serves as a resource aggregator. It categorizes the search results from different online resources such as education materials, publications, datasets, web search engines that might be of interest to the user.

Ramachandran, R.; Movva, S.; Li, X.; Cherukuri, P.; Graves, S.

2006-12-01

140

Engineering innovation to reduce wind power COE  

SciTech Connect

There are enough wind resources in the US to provide 10 times the electric power we currently use, however wind power only accounts for 2% of our total electricity production. One of the main limitations to wind use is cost. Wind power currently costs 5-to-8 cents per kilowatt-hour, which is more than twice the cost of electricity generated by burning coal. Our Intelligent Wind Turbine LDRD Project is applying LANL's leading-edge engineering expertise in modeling and simulation, experimental validation, and advanced sensing technologies to challenges faced in the design and operation of modern wind turbines.

Ammerman, Curtt Nelson [Los Alamos National Laboratory

2011-01-10

141

Design and Implementation of a Threaded Search Engine for Tour Recommendation Systems  

NASA Astrophysics Data System (ADS)

This paper implements a threaded scan engine for the O(n!) search space and measures its performance, aiming at providing a responsive tour recommendation and scheduling service. As a preliminary step of integrating POI ontology, mobile object database, and personalization profile for the development of new vehicular telematics services, this implementation can give a useful guideline to design a challenging and computation-intensive vehicular telematics service. The implemented engine allocates the subtree to the respective threads and makes them run concurrently exploiting the primitives provided by the operating system and the underlying multiprocessor architecture. It also makes it easy to add a variety of constraints, for example, the search tree is pruned if the cost of partial allocation already exceeds the current best. The performance measurement result shows that the service can run even in the low-power telematics device when the number of destinations does not exceed 15, with an appropriate constraint processing.

Lee, Junghoon; Park, Gyung-Leen; Ko, Jin-Hee; Shin, In-Hye; Kang, Mikyung

142

A Fuzzy Integral Method to Merge Search Engine Results on Web  

Microsoft Academic Search

\\u000a Distributed information retrieval searches information among many disjoint databases or search engine results and merge of\\u000a retrieved results into a single result list that a person can browse easily. How to merge the results returned by selected\\u000a search engine is an important subproblem of the distributed information retrieval task, because every search engine has its\\u000a own calculation or definition about

Shuning Cui; Boqin Feng

2005-01-01

143

A review of solar-powered Stirling engines and low temperature differential Stirling engines  

Microsoft Academic Search

This article provides a literature review on solar-powered Stirling engines and low temperature differential Stirling engines technology. A number of research works on the development of Stirling engines, solar-powered Stirling engines, and low temperature differential Stirling engines is discussed. The aim of this review is to find a feasible solution which may lead to a preliminary conceptual design of a

Bancha Kongtragool; Somchai Wongwises

2003-01-01

144

Efficient Blind Search: Optimal Power of Detection under Computational Cost  

E-print Network

Meinshausen, Peter Bickel and John Rice Department of Statistics, University of Oxford and Department demonstrate the procedure for pulsar search from satellite gamma-ray observations and show that the power for a needle in several thousand haystacks?" Take the search for gamma-ray pulsars as an example. For each

Rice, John

145

Guided Google: A Meta Search Engine and its Implementation using the Google Distributed Web Services  

E-print Network

1 Guided Google: A Meta Search Engine and its Implementation using the Google Distributed Web in recent years. For instance, Google, which is one of the popular search engines, supports Web Services that allow external applications to issue Web search queries that are actually processed using a Google

Buyya, Rajkumar

146

GeoSearcher: Location-Based Ranking of Search Engine Results.  

ERIC Educational Resources Information Center

Discussion of Web queries with geospatial dimensions focuses on an algorithm that assigns location coordinates dynamically to Web sites based on the URL. Describes a prototype search system that uses the algorithm to re-rank search engine results for queries with a geospatial dimension, thus providing an alternative ranking order for search engine

Watters, Carolyn; Amoudi, Ghada

2003-01-01

147

Automatic Extraction of Dynamic Record Sections From Search Engine Result Pages  

Microsoft Academic Search

A search engine returned result page may contain search results that are organized into multiple dynamically generated sections in response to a user query. Furthermore, such a result page often also contains information irrelevant to the query, such as information related to the hosting site of the search engine. In this paper, we present a method to automatically generate wrappers

Hongkun Zhao; Weiyi Meng; Clement T. Yu

2006-01-01

148

Intelligent Social Media Indexing and Sharing Using an Adaptive Indexing Search Engine  

Microsoft Academic Search

Effective sharing of diverse social media is often inhibited by limitations in their search and discovery mechanisms, which are particularly restrictive for media that do not lend themselves to automatic processing or indexing. Here, we present the structure and mechanism of an adaptive search engine which is designed to overcome such limitations. The basic framework of the adaptive search engine

Clement H. C. Leung; Alice W. S. Chan; Alfredo Milani; Jiming Liu; Yuanxi Li

2012-01-01

149

Fully Automatic Wrapper Generation For Search Engines Hongkun Zhao, Weiyi Meng  

E-print Network

of a link to and/or snippet of a retrieved Web page. In addition, such a result page often also contains with search engines such as automatic construction and maintenance of metasearch engines and deep Web crawling the result pages returned by the search engines used. As another example, deep web crawling is to crawl

Meng, Weiyi

150

Overheat Prevention in Solar-Powered Stirling Engines  

NASA Technical Reports Server (NTRS)

Proposed controller for solar-powered Stirling engine prevents engine from burning up when energy added by Sun exceeds that withdrawn by load. Head-temperature controller used existing electrical control unit of Stirling engine to regulate power output in response to head temperature. Power out-put is varied so keeps head temperature fairly constant.

Garrigus, W. E.; Pons, R. L.

1982-01-01

151

In Search of Search Engine Marketing Strategy Amongst SME's in Ireland  

NASA Astrophysics Data System (ADS)

Researchers have identified the Web as a searchers first port of call for locating information. Search Engine Marketing (SEM) strategies have been noted as a key consideration when developing, maintaining and managing Websites. A study presented here of SEM practices of Irish small to medium enterprises (SMEs) reveals they plan to spend more resources on SEM in the future. Most firms utilize an informal SEM strategy, where Website optimization is perceived most effective in attracting traffic. Respondents cite the use of ‘keywords in title and description tags’ as the most used SEM technique, followed by the use of ‘keywords throughout the whole Website’; while ‘Pay for Placement’ was most widely used Paid Search technique. In concurrence with the literature, measuring SEM performance remains a significant challenge with many firms unsure if they measure it effectively. An encouraging finding is that Irish SMEs adopt a positive ethical posture when undertaking SEM.

Barry, Chris; Charleton, Debbie

152

MSTAR's extensible search engine and model-based inferencing toolkit  

NASA Astrophysics Data System (ADS)

The DARPA/AFRL 'Moving and Stationary Target Acquisition and Recognition' (MSTAR) program is developing a model-based vision approach to Synthetic Aperture Radar (SAR) Automatic Target Recognition (ATR). The motivation for this work is to develop a high performance ATR capability that can identify ground targets in highly unconstrained imaging scenarios that include variable image acquisition geometry, arbitrary target pose and configuration state, differences in target deployment situation, and strong intra-class variations. The MSTAR approach utilizes radar scattering models in an on-line hypothesize-and-test operation that compares predicted target signature statistics with features extracted from image data in an attempt to determine a 'best fit' explanation of the observed image. Central to this processing paradigm is the Search algorithm, which provides intelligent control in selecting features to measure and hypotheses to test, as well as in making the decision about when to stop processing and report a specific target type or clutter. Intelligent management of computation performed by the Search module is a key enabler to scaling the model-based approach to the large hypothesis spaces typical of realistic ATR problems. In this paper, we describe the present state of design and implementation of the MSTAR Search engine, as it has matured over the last three years of the MSTAR program. The evolution has been driven by a continually expanding problem domain that now includes 30 target types, viewed under arbitrary squint/depression, with articulations, reconfigurations, revetments, variable background, and up to 30% blocking occlusion. We believe that the research directions that have been inspired by MSTAR's challenging problem domain are leading to broadly applicable search methodologies that are relevant to computer vision systems in many areas.

Wissinger, John; Ristroph, Robert; Diemunsch, Joseph R.; Severson, William E.; Fruedenthal, Eric

1999-08-01

153

A fast method for power system splitting boundary searching  

Microsoft Academic Search

It is possible to prevent collapse of whole post-fault power system, which is in unstable condition, by determining the splitting boundary to calm down system oscillation. A fast splitting boundary-searching method for power system controlled islanding is presented in this paper. The aim of this method is that the generation load imbalance in each island is as small as possible.

C. G. Wang; B. H. Zhang; J. Shu; P. Li; Z. Q. Bo

2009-01-01

154

14 CFR 121.181 - Airplanes: Reciprocating engine-powered: En route limitations: One engine inoperative.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.181 Airplanes: Reciprocating engine-powered:...

2011-01-01

155

14 CFR 121.179 - Airplanes: Reciprocating engine-powered: En route limitations: All engines operating.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.179 Airplanes: Reciprocating engine-powered:...

2010-01-01

156

14 CFR 121.181 - Airplanes: Reciprocating engine-powered: En route limitations: One engine inoperative.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.181 Airplanes: Reciprocating engine-powered:...

2013-01-01

157

14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Airplanes: Turbine engine powered: En route...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.193 Airplanes: Turbine engine powered: En...

2013-01-01

158

14 CFR 121.181 - Airplanes: Reciprocating engine-powered: En route limitations: One engine inoperative.  

...2014-01-01 2014-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.181 Airplanes: Reciprocating engine-powered:...

2014-01-01

159

14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Airplanes: Turbine engine powered: En route...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.193 Airplanes: Turbine engine powered: En...

2010-01-01

160

14 CFR 121.179 - Airplanes: Reciprocating engine-powered: En route limitations: All engines operating.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.179 Airplanes: Reciprocating engine-powered:...

2012-01-01

161

14 CFR 121.181 - Airplanes: Reciprocating engine-powered: En route limitations: One engine inoperative.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.181 Airplanes: Reciprocating engine-powered:...

2012-01-01

162

14 CFR 121.181 - Airplanes: Reciprocating engine-powered: En route limitations: One engine inoperative.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.181 Airplanes: Reciprocating engine-powered:...

2010-01-01

163

14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Airplanes: Turbine engine powered: En route...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.193 Airplanes: Turbine engine powered: En...

2012-01-01

164

14 CFR 121.179 - Airplanes: Reciprocating engine-powered: En route limitations: All engines operating.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.179 Airplanes: Reciprocating engine-powered:...

2011-01-01

165

14 CFR 121.179 - Airplanes: Reciprocating engine-powered: En route limitations: All engines operating.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.179 Airplanes: Reciprocating engine-powered:...

2013-01-01

166

14 CFR 121.179 - Airplanes: Reciprocating engine-powered: En route limitations: All engines operating.  

...2014-01-01 2014-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.179 Airplanes: Reciprocating engine-powered:...

2014-01-01

167

An open-source, mobile-friendly search engine for public medical knowledge.  

PubMed

The World Wide Web has become an important source of information for medical practitioners. To complement the capabilities of currently available web search engines we developed FindMeEvidence, an open-source, mobile-friendly medical search engine. In a preliminary evaluation, the quality of results from FindMeEvidence proved to be competitive with those from TRIP Database, an established, closed-source search engine for evidence-based medicine. PMID:25160206

Samwald, Matthias; Hanbury, Allan

2014-01-01

168

search UT Arlington... engineering home news home press releases subscribe to e-news engineering in the news  

E-print Network

search UT Arlington... engineering home news home press releases subscribe to e-news engineering in the news Hall of Achievement Honoree Jim Crites College of Engineering Honors Hall of Achievement Inductee and physicists. These collaborations and his independent research have involved radio transmission, cancer

Chiao, Jung-Chih

169

OrChem - An open source chemistry search engine for Oracle®  

PubMed Central

Background Registration, indexing and searching of chemical structures in relational databases is one of the core areas of cheminformatics. However, little detail has been published on the inner workings of search engines and their development has been mostly closed-source. We decided to develop an open source chemistry extension for Oracle, the de facto database platform in the commercial world. Results Here we present OrChem, an extension for the Oracle 11G database that adds registration and indexing of chemical structures to support fast substructure and similarity searching. The cheminformatics functionality is provided by the Chemistry Development Kit. OrChem provides similarity searching with response times in the order of seconds for databases with millions of compounds, depending on a given similarity cut-off. For substructure searching, it can make use of multiple processor cores on today's powerful database servers to provide fast response times in equally large data sets. Availability OrChem is free software and can be redistributed and/or modified under the terms of the GNU Lesser General Public License as published by the Free Software Foundation. All software is available via http://orchem.sourceforge.net. PMID:20298521

2009-01-01

170

Unified power engineering laboratory for electromechanical energy conversion, power electronics, and power systems  

Microsoft Academic Search

This paper introduces a unified power engineering laboratory capable of various experiments for power systems, power electronics, and electromechanical energy conversion. It presents a flexible hardware setup, data acquisition (DAQ), and virtual instrumentation (VI). Some features of virtual instrumentation are shown with real-time phasor diagrams, sequence component analysis, and spectral analysis of AC data. We describe the general design of

Thomas W. Gedra; Seungwon An; Q. H. Arsalan; S. Ray

2004-01-01

171

FUSION METHODS BASED ON COMMON ORDER INVARIABILITY FOR META SEARCH ENGINE SYSTEMS  

E-print Network

FUSION METHODS BASED ON COMMON ORDER INVARIABILITY FOR META SEARCH ENGINE SYSTEMS Xiaohua Yang Hui@ctit.zhnut.edu.cn hy92,minjie@uow.edu.au Abstract: Fusion is an important work for running meta search engine systems. A fusion algorithm is rational iff it can satisfy three conditions, i.e. the associativity, commutativity

Zhang, Minjie

172

Towards Answer-Focused Summarization Using Search Engines University of Michigan  

E-print Network

document that a user has to skim over. Some search engines, such as Google and NorthernLight, provideChapter 18 Towards Answer-Focused Summarization Using Search Engines Harris Wu University of Michigan Ann Arbor, MI 48109 harriswu@umich.edu Dragomir R. Radev University of Michigan Ann Arbor, MI

Radev, Dragomir R.

173

Machine Learning Approaches for Mood Classification of Songs toward Music Search Engine  

E-print Network

Machine Learning Approaches for Mood Classification of Songs toward Music Search Engine Dang Trung that users can use to explore music stores: artist, genre and album. However moods or emotions of songs identified moods of songs as metadata in our music search engine. 2 Related Work Recent developments in music

Shirai, Kiyoaki

174

The Human Flesh Search Engine: Democracy, Censorship, and Political Participation in Twenty-First Century China  

Microsoft Academic Search

The Human Flesh Search Engine is a recent, unique phenomenon on the Chinese internet. Comprising of thousands of forum, micro-blog, and entertainment websites and mobilizing the overwhelming number of Chinese internet users, or netizens, the search engine is able to quickly find obscure information and identify seemingly anonymous internet personalities. These websites allow netizens to have their voices heard in

Vincent Capone

2012-01-01

175

Finding Information on the World Wide Web: The Retrieval Effectiveness of Search Engines  

Microsoft Academic Search

Search engines are essential for finding information on the World Wide Web. We conducted a study to see how eÄective eight search engines are. Expert searchers sought information on the Web for users who had legitimate needs for information, and these users assessed the relevance of the information retrieved. We calculated traditional information retrieval measures of recall and precision at

Michael D. Gordon; Praveen Pathak

1999-01-01

176

Finding Information on the World Wide Web: The Retrieval Effectiveness of Search Engines.  

ERIC Educational Resources Information Center

Describes a study that examined the effectiveness of eight search engines for the World Wide Web. Calculated traditional information-retrieval measures of recall and precision at varying numbers of retrieved documents to use as the bases for statistical comparisons of retrieval effectiveness. Also examined the overlap between search engines.…

Pathak, Praveen; Gordon, Michael

1999-01-01

177

A Game Engine Based Simulation of the NIST Urban Search and Rescue Arenas  

E-print Network

engine on which Unreal Tournament and other video games are based to provide a high quality modeling interface, video frame rate, and control architecture as the robot Corky ďż˝ The command grid controlUSAR A Game Engine Based Simulation of the NIST Urban Search and Rescue Arenas Urban Search

Yu, Bin

178

Search Engine Predilection towards News Media Providers Leif Azzopardi, Ciaran Owens  

E-print Network

Search Engine Predilection towards News Media Providers Leif Azzopardi, Ciaran Owens Dept. of Comp online news media provider sites using an access based measure. Categories and Subject Descriptors H.3 Bias 1. INTRODUCTION Web search engines are the primary means for millions of users to access online

Azzopardi, Leif

179

A measurement study of online internet video views through a large-scale, search engine  

Microsoft Academic Search

As the spread of broadband Internet access, the online Internet video becomes popular in our daily life. The search engine is an important tool for users to access online video, resulting in considerable traffic on the video Websites. In this work, we statistically analyze the video access log provided by a large scale video search engine, and validate that the

Chen Yishuai; Chen Changjia; Guo Dan

2009-01-01

180

Evaluation of proteomic search engines for the analysis of histone modifications.  

PubMed

Identification of histone post-translational modifications (PTMs) is challenging for proteomics search engines. Including many histone PTMs in one search increases the number of candidate peptides dramatically, leading to low search speed and fewer identified spectra. To evaluate database search engines on identifying histone PTMs, we present a method in which one kind of modification is searched each time, for example, unmodified, individually modified, and multimodified, each search result is filtered with false discovery rate less than 1%, and the identifications of multiple search engines are combined to obtain confident results. We apply this method for eight search engines on histone data sets. We find that two search engines, pFind and Mascot, identify most of the confident results at a reasonable speed, so we recommend using them to identify histone modifications. During the evaluation, we also find some important aspects for the analysis of histone modifications. Our evaluation of different search engines on identifying histone modifications will hopefully help those who are hoping to enter the histone proteomics field. The mass spectrometry proteomics data have been deposited to the ProteomeXchange Consortium with the data set identifier PXD001118. PMID:25167464

Yuan, Zuo-Fei; Lin, Shu; Molden, Rosalynn C; Garcia, Benjamin A

2014-10-01

181

14 CFR 135.381 - Large transport category airplanes: Turbine engine powered: En route limitations: One engine...  

Code of Federal Regulations, 2011 CFR

...transport category airplanes: Turbine engine powered: En route...transport category airplanes: Turbine engine powered: En route limitations...a) No person operating a turbine engine powered large transport...is used to allow for adverse winds; (4) Fuel...

2011-01-01

182

14 CFR 135.381 - Large transport category airplanes: Turbine engine powered: En route limitations: One engine...  

Code of Federal Regulations, 2010 CFR

...transport category airplanes: Turbine engine powered: En route...transport category airplanes: Turbine engine powered: En route limitations...a) No person operating a turbine engine powered large transport...is used to allow for adverse winds; (4) Fuel...

2010-01-01

183

14 CFR 135.381 - Large transport category airplanes: Turbine engine powered: En route limitations: One engine...  

Code of Federal Regulations, 2012 CFR

...transport category airplanes: Turbine engine powered: En route...transport category airplanes: Turbine engine powered: En route limitations...a) No person operating a turbine engine powered large transport...is used to allow for adverse winds; (4) Fuel...

2012-01-01

184

14 CFR 135.381 - Large transport category airplanes: Turbine engine powered: En route limitations: One engine...  

...transport category airplanes: Turbine engine powered: En route...transport category airplanes: Turbine engine powered: En route limitations...a) No person operating a turbine engine powered large transport...is used to allow for adverse winds; (4) Fuel...

2014-01-01

185

14 CFR 135.381 - Large transport category airplanes: Turbine engine powered: En route limitations: One engine...  

Code of Federal Regulations, 2013 CFR

...transport category airplanes: Turbine engine powered: En route...transport category airplanes: Turbine engine powered: En route limitations...a) No person operating a turbine engine powered large transport...is used to allow for adverse winds; (4) Fuel...

2013-01-01

186

Centre Hydraulic Power Supply Unit University of Saskatchewan -Mechanical Engineering Fluid Power and Controls  

E-print Network

Centre Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ďż˝ Fluid Power and Controls ID: FP0003 Rev: 001 Date: May 31, 2010 Page: 1 of 7 Centre Hydraulic Power Supply;Centre Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ďż˝ Fluid Power

Saskatchewan, University of

187

The perfect search engine is not enough: a study of orienteering behavior in directed search  

Microsoft Academic Search

This paper presents a modified diary study that investigated how people performed personally motivated searches in their email, in their files, and on the Web. Although earlier studies of directed search focused on keyword search, most of the search behavior we observed did not involve keyword search. Instead of jumping directly to their information target using keywords, our participants navigated

Jaime Teevan; Christine Alvarado; Mark S. Ackerman; David R. Karger

2004-01-01

188

SearchResultFinder: Federated Search Made Easy Dolf Trieschnigg, Kien Tjin-Kam-Jet and Djoerd Hiemstra  

E-print Network

SearchResultFinder: Federated Search Made Easy Dolf Trieschnigg, Kien Tjin-Kam-Jet and Djoerd Building a federated search engine based on a large number existing web search engines is a challenge, Scraper, Wrapper, Search result extraction 1. INTRODUCTION Federated search engines combine the power

Hiemstra, Djoerd

189

21. POWER ROOM INTERIOR, DETAIL OF CATERPILLAR DIESEL ENGINE DIRECTLY ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

21. POWER ROOM INTERIOR, DETAIL OF CATERPILLAR DIESEL ENGINE DIRECTLY CONNECTED TO GENERAL ELECTRIC 15 KW DC GENERATOR (ON LEFT), 110 VOLTS, 136 AMPS, 1200 RPM. INSTALLED 1942. - Death Valley Ranch, Power House, Death Valley Junction, Inyo County, CA

190

23. POWER ROOM INTERIOR, DETAIL OF FAIRBANKSMORSE DIESEL ENGINE, DIRECTLY ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

23. POWER ROOM INTERIOR, DETAIL OF FAIRBANKS-MORSE DIESEL ENGINE, DIRECTLY CONNECTED TO FAIRBANKS-MORSE 30 KW DC GENERATOR, 125 VOLTS, 240 AMPS, 800 RPM. INSTALLED 1930. - Death Valley Ranch, Power House, Death Valley Junction, Inyo County, CA

191

Improving Turbocharged Diesel Engine Operation with Turbo Power Assist System  

E-print Network

Improving Turbocharged Diesel Engine Operation with Turbo Power Assist System I. Kolmanovsky A. G Engineering, UC, Santa Barbara Abstract The paper investigates improvements in the tur- bocharged diesel problem. Comparison with a conventional turbocharged diesel engine reveals the mechanism by which

Stefanopoulou, Anna

192

An Interactive Computer Graphics Package for Electric Power Engineering Education  

Microsoft Academic Search

The widespread availability of computer terminals with graphics capability has made it possible to develop interactive software for use in electric power engineering education. This paper presents a general description of the RPI graphics system and the programs now available for power engineering use.

S. J. Salon

1983-01-01

193

Power Systems Engineering Research Center PSERC Background Paper  

E-print Network

Power Systems Engineering Research Center PSERC Background Paper Analyzing Blackout Events, Electrical Engineering and Computer Science, Washington State University August 20, 2003 In the summer computer models of the electric grid. In the present day power system, computer models are commonly used

194

Nuclear Engineering Technologists in the Nuclear Power Era  

ERIC Educational Resources Information Center

Describes manpower needs in nuclear engineering in the areas of research and development, architectural engineering and construction supervision, power reactor operations, and regulatory tasks. Outlines a suitable curriculum to prepare students for the tasks related to construction and operation of power reactors. (GS)

Wang, C. H.; And Others

1974-01-01

195

Spacecraft Power Systems Engineering: Solutions for NASA's Manned Space Program  

NASA Technical Reports Server (NTRS)

An overview of spacecraft power systems is presented, with a focus on applications in the manned space program. The topics include: 1) History; 2) State-of-the-art; 3) Development directions; 4) Focus on applications in the manned space program led from JSC; 5) Power Systems Engineering Trade Space; 6) Power Generation and Energy Storage; 7) Power Distribution and Control; and 8) Actuation

Scott, John H.

2007-01-01

196

Combinatorial search strategies for the metabolic engineering of microorganisms  

E-print Network

Although the field of microbial metabolic engineering has traditionally been dominated by rational and knowledge-driven approaches, recent advances in genetic engineering have led to the emergence of a new methodology based ...

Santos, Christine Nicole S. (Christine Nicole San Diego)

2010-01-01

197

The base engine for solar Stirling power  

Microsoft Academic Search

A new concept in Stirling engine technology is embodied in the base engine now being developed at Stirling Thermal Motors, Inc. This is a versatile energy conversion unit suitable for many different applications and heat sources. The base engine, rated 40 kW at 2800 RPM, is a four-cylinder, double-acting variable displacement Stirling engine with pressurized crankcase and rotating shaft seal.

R. J. Meijer; T. M. Godett

1984-01-01

198

Hybrid engines and power plants concepts for space objects  

NASA Astrophysics Data System (ADS)

The concept of a hybrid engine for an aerospace vehicle (ASV) is proposed whereby operating regimes are combined with electric power generation. Hydrogen hybrid engines and solar/nuclear power plant are considered as possible implementations, and the new functional possibilities afforded by these concepts are examined. Cost analysis results are presented, including estimates of cost-optimized parametric ratios determining the competitiveness of alternative hybrid engine concepts.

Kurkin, Igor'i.; Sidorov, Dmitrij A.

1993-10-01

199

Roman engineering [overhead power line history  

Microsoft Academic Search

A modern engineer visiting Rome, as the author did recently, cannot fail to be impressed by the work of the Roman engineers of 2000 years ago. However much manual labor was available in the capital of the empire, the planning and construction of the Colosseum and the Pantheon were magnificent engineering achievements. Large numbers of stone blocks weighing up to

B. Bowers

2003-01-01

200

The application of clustering to Web search engine tech-nology is a novel approach that offers structure to the  

E-print Network

The application of clustering to Web search engine tech- nology is a novel approach that offers studied in research labs; however, real user searching with clustering systems in operational Web of Vivisimo.com, which is a Web meta-search engine that dynamically clusters users' search results

Jansen, James

201

Applicability of advanced automotive heat engines to solar thermal power  

NASA Technical Reports Server (NTRS)

The requirements of a solar thermal power system are reviewed and compared with the predicted characteristics of automobile engines under development. A good match is found in terms of power level and efficiency when the automobile engines, designed for maximum powers of 65-100 kW (87 to 133 hp) are operated to the nominal 20-40 kW electric output requirement of the solar thermal application. At these reduced power levels it appears that the automotive gas turbine and Stirling engines have the potential to deliver the 40+ percent efficiency goal of the solar thermal program.

Beremand, D. G.; Evans, D. G.; Alger, D. L.

1981-01-01

202

Agricultural Engineering Agriculture Power and Machinery Engineering Option  

E-print Network

(Classical Physics II) 2 AE 218 (Project Mgmt and Design) 3 Agron 154 (Soil Science) 3 EM 324 (Mechanics Lab) 3 AGRON 154 (Soil Science) 3 Engl 250 (WOVE Comp) 3 Stat 305 (Engineering Statistics) 3 ME 231

Lin, Zhiqun

203

Rankine-Brayton engine powered solar thermal aircraft  

Microsoft Academic Search

A solar thermal powered aircraft powered by heat energy from the sun. A Rankine-Brayton hybrid cycle heat engine is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller or other mechanism for enabling sustained free flight. The Rankine-Brayton engine has a thermal battery, preferably containing a lithium-hydride and lithium mixture, operably connected to

Charles L

2009-01-01

204

Rankline-Brayton engine powered solar thermal aircraft  

Microsoft Academic Search

A solar thermal powered aircraft powered by heat energy from the sun. A Rankine-Brayton hybrid cycle heat engine is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller or other mechanism for enabling sustained free flight. The Rankine-Brayton engine has a thermal battery, preferably containing a lithium-hydride and lithium mixture, operably connected to

Charles L

2012-01-01

205

The Linguist's Search Engine User's Guide Aaron Elkiss and Philip Resnik  

E-print Network

The Linguist's Search Engine User's Guide Aaron Elkiss and Philip Resnik Institute for Advanced Computer Studies University of Maryland College Park, MD 20742-3275 {aelkiss, resnik}@umiacs.umd.edu 24-Aug

Setiawan, Hendra

206

A Search Engine for Polygonal Models to Support Development of 3D E-Learning Applications  

Microsoft Academic Search

We have developed a web-based search engine for 3D polygonal models. These days, the number of web sites using Web 3D technology is increasing. The development of our search engine can be useful for people who are building 3D e-learning environments, because 3D polygonal models can be quickly retrieved based on similarity of shapes or on certain

Motofumi T. Suzuki

2001-01-01

207

Design of robust power system stabilizers in a multimachine power system using tabu search algorithm  

Microsoft Academic Search

This paper proposed a design of robust power system stabilizers (PSSs) in a multimachine power system using tabu search (TS) algorithm. Each PSS structure used is identical to that of a widely-used conventional lead-lag PSS (CPSS). The proposed design method arranges PSSs and a multimachine power system as a decentralized controller and a multi-input multi-output (MIMO) system, respectively. Practically, suitable

S. Dechanupaprittha; I. Ngamroo

2002-01-01

208

An Ontology Search Engine Based on Semantic Analysis  

Microsoft Academic Search

Searching useful information and locating appropriate ontology from WWW or semantic Web is an important task in ontology research domain. The most difference between ontology information and common information is that ontology has semantic structure. In order to improve search precision by semantic analysis the paper proposes concepts-weights vectors matching algorithm (CWVMA). The algorithm firstly parses input messages and preliminary

Mingxia Gao; Chunnian Liu; Furong Chen

2005-01-01

209

Electric power generation: Tidal and wave power. (Latest citations from the Aerospace database). Published Search  

SciTech Connect

The bibliography contains citations concerning the feasibility of obtaining electric power from ocean disturbances such as waves, swells, and tides. The engineering and economic aspects are emphasized. Theoretical analysis of the power plant potential of selected sites around the world is included. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1994-12-01

210

Electric power generation: Tidal and wave power. (Latest citations from the Aerospace database). Published Search  

SciTech Connect

The bibliography contains citations concerning the feasibility of obtaining electric power from ocean disturbances such as waves, swells, and tides. The engineering and economic aspects are emphasized. Theoretical analysis of the power plant potential of selected sites around the world is included. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1993-12-01

211

Wind power. Citations from the Engineering Index data base  

NASA Astrophysics Data System (ADS)

Windmill and wind power feasibility, use, and engineering are discussed in these citations of worldwide research. Abstracts primarily cover the use of wind power for electric power generator and wind turbine design and performance. General studies dealing with the use of wind power in developing countries and comparative analyses of wind power and alternative energy sources are included, as are studies on energy storage systems. This updated bibliography contains 299 abstracts, 174 of which are new entries to the previous edition.

Hundemann, A. S.

1980-06-01

212

Performance of a twin power piston low temperature differential Stirling engine powered by a solar simulator  

Microsoft Academic Search

This paper provides an experimental investigation on the performance of a low-temperature differential Stirling engine. In this study, a twin power piston, gamma-configuration, low-temperature differential Stirling engine is tested with non-pressurized air by using a solar simulator as a heat source. The engine testing is performed with four different simulated solar intensities. Variations of engine torque, shaft power and brake

Bancha Kongtragool; Somchai Wongwises

2007-01-01

213

Performance of a twin power piston low temperature differential Stirling engine powered by a solar simulator  

Microsoft Academic Search

This paper provides an experimental investigation on the performance of a low-temperature differential Stirling engine. In this study, a twin power piston, gamma-configuration, low-temperature differential Stirling engine is tested with non-pressurized air by using a solar simulator as a heat source. The engine testing is performed with four different simulated solar intensities. Variations of engine torque, shaft power and brake

Bancha Kongtragool; Somchai Wongwises

2006-01-01

214

Development and tuning of an original search engine for patent libraries in medicinal chemistry  

PubMed Central

Background The large increase in the size of patent collections has led to the need of efficient search strategies. But the development of advanced text-mining applications dedicated to patents of the biomedical field remains rare, in particular to address the needs of the pharmaceutical & biotech industry, which intensively uses patent libraries for competitive intelligence and drug development. Methods We describe here the development of an advanced retrieval engine to search information in patent collections in the field of medicinal chemistry. We investigate and combine different strategies and evaluate their respective impact on the performance of the search engine applied to various search tasks, which covers the putatively most frequent search behaviours of intellectual property officers in medical chemistry: 1) a prior art search task; 2) a technical survey task; and 3) a variant of the technical survey task, sometimes called known-item search task, where a single patent is targeted. Results The optimal tuning of our engine resulted in a top-precision of 6.76% for the prior art search task, 23.28% for the technical survey task and 46.02% for the variant of the technical survey task. We observed that co-citation boosting was an appropriate strategy to improve prior art search tasks, while IPC classification of queries was improving retrieval effectiveness for technical survey tasks. Surprisingly, the use of the full body of the patent was always detrimental for search effectiveness. It was also observed that normalizing biomedical entities using curated dictionaries had simply no impact on the search tasks we evaluate. The search engine was finally implemented as a web-application within Novartis Pharma. The application is briefly described in the report. Conclusions We have presented the development of a search engine dedicated to patent search, based on state of the art methods applied to patent corpora. We have shown that a proper tuning of the system to adapt to the various search tasks clearly increases the effectiveness of the system. We conclude that different search tasks demand different information retrieval engines' settings in order to yield optimal end-user retrieval. PMID:24564220

2014-01-01

215

The NASA Astrophysics Data System: The Search Engine and its User Interface  

E-print Network

The ADS Abstract and Article Services provide access to the astronomical literature through the World Wide Web (WWW). The forms based user interface provides access to sophisticated searching capabilities that allow our users to find references in the fields of Astronomy, Physics/Geophysics, and astronomical Instrumentation and Engineering. The returned information includes links to other on-line information sources, creating an extensive astronomical digital library. Other interfaces to the ADS databases provide direct access to the ADS data to allow developers of other data systems to integrate our data into their system. The search engine is a custom-built software system that is specifically tailored to search astronomical references. It includes an extensive synonym list that contains discipline specific knowledge about search term equivalences. Search request logs show the usage pattern of the various search system capabilities. Access logs show the world-wide distribution of ADS users. The ADS can be accessed at http://adswww.harvard.edu

G. Eichhorn; M. J. Kurtz; A. Accomazzi; C. S. Grant; S. S. Murray

2000-02-04

216

A Confluence of Column Stores and Search Engines: Opportunities and Challenges  

Microsoft Academic Search

IR and DB integration has been a long-withstanding re- search challenge. Most of the work trying to integrate the two elds is motivated by specic application scenarios. In this paper we approach this problem from another perspec- tive. Instead of focusing on IR and DB as whole elds, we restrict the focus to search engines and column stores. We present

Truls A. Bjřrklund; Johannes Gehrke; Řystein Torbjřrnsen

2009-01-01

217

Identifying Clusters of User Behaviour in Intranet Search Engine Log Files  

Microsoft Academic Search

When studying how ordinary Web users interact with Web search engines, researchers tend to either treat the users as a homogeneous group or by grouping them according to search experience. Neither app- roach is sufficient, we argue, to capture the variety in behaviour that is known to exist amongst searchers. By applying automatic clustering technique based on self-organising maps to

Dick Stenmark

218

A Tree Based Router Search Engine Architecture With Single Port Memories  

E-print Network

A Tree Based Router Search Engine Architecture With Single Port Memories Florin Baboescu , Dean M routers to meet speed demands. Tree-based searches are pipelined across a number of stages to achieve high is the need to provide high packet forwarding rates through the router. This paper presents a novel

219

A Hybrid Quantum Search Engine: A Fast Quantum Algorithm for Multiple Matches  

Microsoft Academic Search

In this paper we will present a quantum algorithm which works very efficiently in case of multiple matches within the search space and in the case of few matches, the algorithm performs classically. This allows us to propose a hybrid quantum search engine that integrates Grover's algorithm and the proposed algorithm here to have general performance better that any pure

Ahmed Younes; Jon Rowe; Julian Miller

2003-01-01

220

Two-Level Smart Search Engine Using Ontology-Based Semantic Reasoning  

E-print Network

, typically use the keyword-matching approach and ranking algorithms to retrieve the desired information being presented [1],[2]. For example, the word "Football" may refer to the sport played in North America a user types the query "Football Leagues" into a traditional search engine, expecting some search results

Xu, Haiping

221

OrChem - An open source chemistry search engine for Oracle®  

Microsoft Academic Search

ABSTRACT: BACKGROUND: Registration, indexing and searching of chemical structures in relational databases is one of the core areas of cheminformatics. However, little detail has been published on the inner workings of search engines and their development has been mostly closed-source. We decided to develop an open source chemistry extension for Oracle, the de facto database platform in the commercial world.

Mark Rijnbeek; Christoph Steinbeck

2009-01-01

222

The Research and Implementation of the Deep Search Engine of Popular Science  

Microsoft Academic Search

This paper has designed and implemented a deep search engine oriented to the domain of popular science using subject search technique and the deep Web integration technique. It has introduced the system architecture, the subject information gathering strategy as well as the key technologies it used, and our Web page classifier has high accuracy with experimental verification. In the end,

Wang Fang; Mo Qian

2009-01-01

223

The Research and Implementation of the Deep Search Engine of Popular Science  

Microsoft Academic Search

This paper has designed and implement of a deep search engine oriented to the domain of popular science using subject search technique and the deep Web integration technique. It has introduced the system architecture -. the subject information gathering strategy as well as the key technologies it used, and our Web page classifier has high precision with experimental verification. In

Wu Chensheng; Liu Yanjun; Zhang Luji; Hou Wei

2009-01-01

224

Design and Implementation of a Content-Based Search Engine Ville H. Tuulos  

E-print Network

-world deployments of the system. The largest of the deploy- ments was a publicly available Web search engine, Aino . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 5 Demonstrations 79 5.1 Web Search . . . . . . . . . . . . . . 12 3 A co-occurrence matrix. Dark cells depict frequent co-occurrences. . . 17 4 Zipan distribution

Myllymäki, Petri

225

Analysis of the stirling heat engine at maximum power conditions  

Microsoft Academic Search

The Stirling heat engine operating in a closed regenerative thermodynamic cycle is analyzed. Polytropic processes are used for the power and displacement pistons. Following regeneration, the maximum power density and efficiency are found and the compression ratio at maximum power density is determined.

L. Berrin Erbay; Hasbi Yavuz

1997-01-01

226

A Hybrid Quantum Search Engine: A Fast Quantum Algorithm for Multiple Matches  

E-print Network

In this paper we will present a quantum algorithm which works very efficiently in case of multiple matches within the search space and in the case of few matches, the algorithm performs classically. This allows us to propose a hybrid quantum search engine that integrates Grover's algorithm and the proposed algorithm here to have general performance better that any pure classical or quantum search algorithm.

Ahmed Younes; Jon Rowe; Julian Miller

2003-11-25

227

Which search engine is best at finding airline site home pages?  

Microsoft Academic Search

We evaluate the effectiveness of 20 Web search engines on 95 site finding queries. Each query names an airline, with the correct answer being the airline's official home page URL (as listed by the International Air Transport Association). Performance varies widely across the 20 engines, indicating that site finding problem is not consistently well solved in practice. Users may wish

Nick Craswell; David Hawking; Kathleen Griffiths

2001-01-01

228

Automatic Extraction of Dynamic Record Sections From Search Engine Result Pages  

E-print Network

and maintenance of metasearch engines and deep Web crawling. 1. INTRODUCTION A recent survey reveals [18, 26], deep web crawlers [20] and shopping agents, need to interact with search engines. Thus or a document). A SRR typically consists of a link to a retrieved Web page or database record (or further

Meng, Weiyi

229

A new Search via Probability Algorithm for solving Engineering ...  

E-print Network

iteration, and on the performance of the algorithm we create good conditions for ..... genetic algorithm (BGA), and a combined genetic search technique ... find a solution which has an objective-function value better than that of other authors as

Admin

2012-08-08

230

Search Engine Advertising: Channel Substitution when Pricing Ads to Context  

E-print Network

We explore substitution patterns across advertising platforms. Using data on the advertising prices paid by lawyers for 139 Google search terms in 195 locations, we exploit a natural experiment in “ambulance-chaser” ...

Goldfarb, Avi

231

14 CFR 121.329 - Supplemental oxygen for sustenance: Turbine engine powered airplanes.  

Code of Federal Regulations, 2012 CFR

...sustenance: Turbine engine powered airplanes. 121.329 Section 121.329...sustenance: Turbine engine powered airplanes. (a) General. When operating a turbine engine powered airplane, each certificate holder shall...

2012-01-01

232

14 CFR 121.329 - Supplemental oxygen for sustenance: Turbine engine powered airplanes.  

...sustenance: Turbine engine powered airplanes. 121.329 Section 121.329...sustenance: Turbine engine powered airplanes. (a) General. When operating a turbine engine powered airplane, each certificate holder shall...

2014-01-01

233

14 CFR 121.329 - Supplemental oxygen for sustenance: Turbine engine powered airplanes.  

Code of Federal Regulations, 2013 CFR

...sustenance: Turbine engine powered airplanes. 121.329 Section 121.329...sustenance: Turbine engine powered airplanes. (a) General. When operating a turbine engine powered airplane, each certificate holder shall...

2013-01-01

234

14 CFR 121.195 - Airplanes: Turbine engine powered: Landing limitations: Destination airports.  

Code of Federal Regulations, 2011 CFR

... § 121.195 Airplanes: Turbine engine powered: Landing limitations...a) No person operating a turbine engine powered airplane...section, no person operating a turbine engine powered airplane...destination airport and the wind conditions anticipated...

2011-01-01

235

14 CFR 121.195 - Airplanes: Turbine engine powered: Landing limitations: Destination airports.  

Code of Federal Regulations, 2013 CFR

... § 121.195 Airplanes: Turbine engine powered: Landing limitations...a) No person operating a turbine engine powered airplane...section, no person operating a turbine engine powered airplane...destination airport and the wind conditions anticipated...

2013-01-01

236

14 CFR 121.195 - Airplanes: Turbine engine powered: Landing limitations: Destination airports.  

Code of Federal Regulations, 2012 CFR

... § 121.195 Airplanes: Turbine engine powered: Landing limitations...a) No person operating a turbine engine powered airplane...section, no person operating a turbine engine powered airplane...destination airport and the wind conditions anticipated...

2012-01-01

237

14 CFR 121.195 - Airplanes: Turbine engine powered: Landing limitations: Destination airports.  

... § 121.195 Airplanes: Turbine engine powered: Landing limitations...a) No person operating a turbine engine powered airplane...section, no person operating a turbine engine powered airplane...destination airport and the wind conditions anticipated...

2014-01-01

238

14 CFR 121.195 - Airplanes: Turbine engine powered: Landing limitations: Destination airports.  

Code of Federal Regulations, 2010 CFR

... § 121.195 Airplanes: Turbine engine powered: Landing limitations...a) No person operating a turbine engine powered airplane...section, no person operating a turbine engine powered airplane...destination airport and the wind conditions anticipated...

2010-01-01

239

The MediaMill TRECVID 2010 semantic video search engine  

Microsoft Academic Search

In this paper we describe our TRECVID 2010 video retrieval experiments. The MediaMill team participated in three tasks: semantic indexing, known-item search, and instance search. The starting point for the MediaMill concept detection approach is our top-performing bag-of-words system of TRECVID 2009, which uses multiple color SIFT descriptors, sparse codebooks with spatial pyramids, kernel-based machine learning, and multi-frame video processing.

C. G. M. Snoek; Sande van de K. E. A; Rooij de O; B. Huurnink; E. Gavves; D. Odijk; Rijke de M; T. Gevers; M. Worring; D. C. Koelma; A. W. M. Smeulders

2011-01-01

240

Reconsidering the Rhizome: A Textual Analysis of Web Search Engines as Gatekeepers of the Internet  

NASA Astrophysics Data System (ADS)

Critical theorists have often drawn from Deleuze and Guattari's notion of the rhizome when discussing the potential of the Internet. While the Internet may structurally appear as a rhizome, its day-to-day usage by millions via search engines precludes experiencing the random interconnectedness and potential democratizing function. Through a textual analysis of four search engines, I argue that Web searching has grown hierarchies, or "trees," that organize data in tracts of knowledge and place users in marketing niches rather than assist in the development of new knowledge.

Hess, A.

241

Department of Electrical Engineering and Computer Science Electrical-Power & Energy Systems Concentration Catalog 2014  

E-print Network

Department of Electrical Engineering and Computer Science Electrical- Power & Energy Systems The department requires at least a C in every computer engineering, computer science, electrical engineering

Grissino-Mayer, Henri D.

242

Power Systems Engineering Research Center PSERC Background Paper  

E-print Network

instability. Therefore, analysis of dynamic behavior through modeling plays an important role in understanding; therefore, model accuracy is very important. Model validation plays a crucial role in assessingPower Systems Engineering Research Center PSERC Background Paper Modeling Post

243

Power recovery from turbine and gas engine exhausts  

Microsoft Academic Search

Due to the energy consciousness of the United States and to the ever increasing cost of engine fuels, power recovery from turbine and gas engine exhausts has come of age. The addition of waste recovery systems to these exhausts increases the thermal efficiencies of typical systems from the range of 21% to 39% up to the range of 28% to

1985-01-01

244

Electric Power Engineering Educational Resources 1969-1970  

Microsoft Academic Search

This committee report covers results of a survey of electric power engineering educational resources at eighty-two ECPD (Engineers Council for Professional Development) accredited schools in the USA for the acedemic year 1969-1970. It includes a listing of faculty active during the subject year and their professional experience together with information on student enrollment and its composition. Also included is information

F. C. Fisher; L. S. Vanslyck; E. T. B. Gross; C. C. Mosher; H. B. Hamilton; J. R. Tudor

1972-01-01

245

Trends in high power laser applications in civil engineering  

Microsoft Academic Search

This paper reviews the research and development efforts made on the use of lasers for material processing in the civil engineering industry. Initial investigations regarding the possibility of using lasers in civil engineering were made in the 1960s and '70s, the target being rock excavation. At that time however, the laser powers available were too small for any practical application

Sivakumaran Wignarajah; Kenji Sugimoto; Kaori Nagai

2005-01-01

246

Electrical Engineering and Power Electronics Promotion for Secondary School Kids  

Microsoft Academic Search

Industry lacks researchers, developers and service engineers in the whole area of Electrical Power Engineering. However, graduates do not emerge automatically from universities or technical colleges. The critical age is less than 14 years when the path to the future profession is selected. We have to provide sufficient information for that decision and also encourage kids to have active contact

Angelika Fussi

2006-01-01

247

Heat engine development for solar thermal power systems  

NASA Technical Reports Server (NTRS)

The technical status of three heat engines (Stirling, high-temperature Brayton, and Combined cycle) for use in solar thermal power systems is presented. Performance goals necessary to develop a system competitive with conventional power requirements include an external heated engine output less than 40 kW, and efficiency power conversion subsystem at least 40% at rated output, and a half-power efficiency of at least 37%. Results show that the Stirling engine can offer a 39% efficiency with 100 hours of life, and a 20% efficiency with 10,000 hours of life, but problems with seals and heater heads exist. With a demonstrated efficiency near 31% at 1500 F and a minimum lifetime of 100,000 hours, the Brayton engine does not offer sufficient engine lifetime, efficiency, and maintenance for solar thermal power systems. Examination of the Rankine bottoming cycle of the Combined cycle engine reveals a 30 year lifetime, but a low efficiency. Additional development of engines for solar use is primarily in the areas of components to provide a long lifetime, high reliability, and low maintenance (no more than $0.001/kW-hr).

Pham, H. Q.; Jaffe, L. D.

1981-01-01

248

The Industrial Power Plant Management System - An Engineering Approach  

E-print Network

THE INDUSTRIAL POWER PLANT MANAGEMENT SYSTEM AN ENGINEERING APPROACH Seppo E. Aarnio, Heikki J. Tarvainen and Valentin Tinnis EKONO Oy, Helsinki, Finland EKONO Inc., Bellevue, Washington ABSTRACT Based on energy studies in over 70 plants...THE INDUSTRIAL POWER PLANT MANAGEMENT SYSTEM AN ENGINEERING APPROACH Seppo E. Aarnio, Heikki J. Tarvainen and Valentin Tinnis EKONO Oy, Helsinki, Finland EKONO Inc., Bellevue, Washington ABSTRACT Based on energy studies in over 70 plants...

Aarnio, S. E.; Tarvainen, H. J.; Tinnis, V.

1979-01-01

249

Stirling engines. (Latest citations from the EI Compendex*plus database). Published Search  

SciTech Connect

The bibliography contains citations concerning Stirling engine technology. Design, development, performance testing, and applications are discussed, including power generation, cryogenic cooling, solar power applications, and ground and marine vehicles. The citations also examine engine component design and material testing results. (Contains 250 citations and includes a subject term index and title list.)

NONE

1995-02-01

250

Stirling engines. (Latest citations from the EI Compendex*plus database). Published Search  

SciTech Connect

The bibliography contains citations concerning Stirling engine technology. Design, development, performance testing, and applications are discussed, including power generation, cryogenic cooling, solar power applications, and ground and marine vehicles. The citations also examine engine component design and material testing results. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)

NONE

1996-05-01

251

Stirling engines. (Latest citations from the EI Compendex*plus database). Published Search  

SciTech Connect

The bibliography contains citations concerning Stirling engine technology. Design, development, performance testing, and applications are discussed, including power generation, cryogenic cooling, solar power applications, and ground and marine vehicles. The citations also examine engine component design and material testing results. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1994-04-01

252

Power density optimization of Brayton cycle engines  

NASA Astrophysics Data System (ADS)

The Brayton cycle engine is examined from the viewpoint that a major irreversibility of the cycle is a flow pressure loss in work components and the heater and that this loss depends on the design value of the fluid velocity through the machine as well as the cycle parameters as they affect the fluid density. It then follows that an optimum flow velocity balances the requirement for high mass flow rate through the engine and the loss. Further, since the loss is cycle parameter dependent, the optimum cycle pressure ratio is influenced by the choice of design flow speed. This dual optimum is investigated for the gas turbine and the displacement work component engines.

Decher, R.

253

Automatic Generation of Search Engines Markian Hlynka and Jonathan Schaeffer  

E-print Network

enhancement selections. Tournament results are presented for two games to demonstrate that automatically, but with orders of magnitude less effort in its creation. 1 Introduction Programs which play two-player games and a search algorithm. The evaluation function estimates the desirability of a static board position

Schaeffer, Jonathan

254

The Relationship between Search Based Software Engineering and Predictive Modeling  

E-print Network

it allows software engi- neers to balance conflicting and competing constraints in search spaces this synergy. It will also argue that the way in which SBSE can cater for multiple competing and conflicting, there is a great deal of synergy to be expected between the two commu- nities. This paper seeks to explore

Singer, Jeremy

255

Exploring Independent Trends in a Topic-Based Search Engine  

E-print Network

community. While an extensive body of research exists in the area of Topic De- tection and Tracking2 implementation, a topical representation is in- corporated automatically with documents and included in the index and the documents over the topic space. In principle topic models should work better than simple word index searches

Myllymäki, Petri

256

Satellite nuclear power station: An engineering analysis  

NASA Technical Reports Server (NTRS)

A nuclear-MHD power plant system which uses a compact non-breeder reactor to produce power in the multimegawatt range is analyzed. It is shown that, operated in synchronous orbit, the plant would transmit power safely to the ground by a microwave beam. Fuel reprocessing would take place in space, and no radioactive material would be returned to earth. Even the effect of a disastrous accident would have negligible effect on earth. A hydrogen moderated gas core reactor, or a colloid-core, or NERVA type reactor could also be used. The system is shown to approach closely the ideal of economical power without pollution.

Williams, J. R.; Clement, J. D.; Rosa, R. J.; Kirby, K. D.; Yang, Y. Y.

1973-01-01

257

East Hydraulic Power Supply Unit University of Saskatchewan -Mechanical Engineering Fluid Power and Controls  

E-print Network

East Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ďż˝ Fluid Power and Controls ID: FP0004 Rev: 001 Date: May 31, 2010 Page: 1 of 7 East Hydraulic Power Supply and Test Bench. Approved By: Primary Contact: Doug Bitner Rm: 1B15.1 966-5462 Secondary Contact: #12;East Hydraulic Power

Saskatchewan, University of

258

HYPower Hydraulic Power Supply Unit University of Saskatchewan -Mechanical Engineering Fluid Power and Controls  

E-print Network

HYPower Hydraulic Power Supply Unit University of Saskatchewan - Mechanical Engineering ďż˝ Fluid Power and Controls ID: FP0002 Rev: 002 Date: May 31, 2010 Page: 1 of 7 Hydraulic Power Supply (HYPower-5462 Secondary Contact: #12;HYPower Hydraulic Power Supply Unit University of Saskatchewan - Mechanical

Saskatchewan, University of

259

QCSEE UTW engine powered-lift acoustic performance  

NASA Technical Reports Server (NTRS)

Powered-lift acoustic test of the Quiet Clean Short Haul Experimental Engine (QCSEE) under the wing (UTW) engine are reported. Propulsion systems for two powered-lift concepts were designed, fabricated, and tested. In addition to low noise features, the designs included composite structures, gear-driven fans, digital control, and a variable pitch fan (UTW). The UTW engine was tested in a static ground test facility with wing and flap segments to simulate installation on a short haul transport aircraft of the future. Powered-lift acoustic performance of the UTW engine is compared with that of the previously tested and reported QCSEE over-the-wing (OTW) engine. Both engines were slightly above the noise goal but were significantly below current FAA and modern wide-body jet transport levels. The UTW system in the powered-lift mode was penalized by reflected engine noise from the wing and flap system, while the OTW system was benefitted by a wing noise shielding effect.

Loeffler, I. J.; Samanich, N. E.; Bloomer, H. E.

1980-01-01

260

Development of Health Information Search Engine Based on Metadata and Ontology  

PubMed Central

Objectives The aim of the study was to develop a metadata and ontology-based health information search engine ensuring semantic interoperability to collect and provide health information using different application programs. Methods Health information metadata ontology was developed using a distributed semantic Web content publishing model based on vocabularies used to index the contents generated by the information producers as well as those used to search the contents by the users. Vocabulary for health information ontology was mapped to the Systematized Nomenclature of Medicine Clinical Terms (SNOMED CT), and a list of about 1,500 terms was proposed. The metadata schema used in this study was developed by adding an element describing the target audience to the Dublin Core Metadata Element Set. Results A metadata schema and an ontology ensuring interoperability of health information available on the internet were developed. The metadata and ontology-based health information search engine developed in this study produced a better search result compared to existing search engines. Conclusions Health information search engine based on metadata and ontology will provide reliable health information to both information producer and information consumers. PMID:24872907

Song, Tae-Min; Jin, Dal-Lae

2014-01-01

261

Internet Power Searching: The Advanced Manual. 2nd Edition. Neal-Schuman NetGuide Series.  

ERIC Educational Resources Information Center

This handbook provides information on how Internet search engines and related software and utilities work and how to use them in order to improve search techniques. The book begins with an introduction to the Internet. Part 1 contains the following chapters that cover mining the Internet for information: "An Introduction to Search

Bradley, Phil

262

Power and politics in requirements engineering: A proposed research agenda  

Microsoft Academic Search

This vision paper considers the role of power and politics in requirements engineering (RE). It offers a working definition of both terms and reviews the existing literature both in RE and related disciplines. It argues that, given the increased complexity, uncertainty and organisational embeddedness faced by RE in practice, power and politics have become increasingly relevant factors, and that they

Alastair Milne; Neil Maiden

2011-01-01

263

A systematic review of statistical power in software engineering experiments  

Microsoft Academic Search

Abstract Statistical power is an inherent part of empirical studies that employ significance testing and is essential for the planning of studies, for the interpretation of study results, and for the validity of study conclusions. This paper reports a quantitative assessment of the statistical power of empirical software engineering research based on the 103 papers on controlled experiments (of a

Tore Dybĺ; Vigdis By Kampenes; Dag I. K. Sjřberg

2006-01-01

264

Power Systems Engineering Research Center Dennis Ray Ward Jewell  

E-print Network

an overview of the Power Systems Engineering Research Center (PSERC), a National Science Foundation Industry faced in the restructuring of the electric power business. There are eleven university members are collaborative across universities and invite industry involvement from the thirty industrial sponsors. Research

265

12. Detail of clutch and backup gasoline engine for powering ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

12. Detail of clutch and backup gasoline engine for powering Stoney gates. Clutch mechanism manufactured by Baldridge Machine Company, Detroit, Michigan, ca. 1910. Instrument to the left records volume of flow through headworks. View looking south towards Stoney gates. Photo by Jet Lowe, HAER, 1989. - Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA

266

Power recovery from turbine and gas engine exhausts  

SciTech Connect

Due to the energy consciousness of the United States and to the ever increasing cost of engine fuels, power recovery from turbine and gas engine exhausts has come of age. The addition of waste recovery systems to these exhausts increases the thermal efficiencies of typical systems from the range of 21% to 39% up to the range of 28% to 49%. The new ''expander'' type power recovery system includes a waste heat recovery exchanger which will transfer heat from the engine exhaust into any of numerous thermal fluids. The recovered heat energy now in the thermal fluid medium can, in turn, be used to produce power for any desired application (i.e. gas compression, process refrigeration, electrical power generation, etc.). The particular systems put forth in this paper concentrate on the use of expansion fluids (other than steam) driving ''expanders'' as motive devices.

Lawson, G.L.

1985-02-01

267

MediAgent: a WWW-based scalable and self-learning medical search engine.  

PubMed Central

Searching for medical information on the Internet can be tedious and frustrating due to the number of irrelevant entries returned from generic search engines. We have developed MediAgent, a scalable search engine that aims to deliver a web-based medical search solution which is focused, exhaustive and able to keep improving its databases. The software package can run off a single low-end system and be scaled into a client-server, distributed computing architecture for high-end needs. This scalable architecture boosts MediAgent's handling capacity to tens of millions of web pages. In addition to large volume handling, MediAgent is designed to be manageable. All subsystems are not only highly configurable, but also support remote, interactive management and monitoring by the system administrator. PMID:9929289

Tay, J.; Ke, S.; Lun, K. C.

1998-01-01

268

A New Approach to Design Graph Based Search Engine for Multiple Domains Using Different Ontologies  

E-print Network

Search Engine has become a major tool for searching any information from the World Wide Web (WWW). While searching the huge digital library available in the WWW, every effort is made to retrieve the most relevant results. But in WWW majority of the Web pages are in HTML format and there are no such tags which tells the crawler to find any specific domain. To find more relevant result we use Ontology for that particular domain. If we are working with multiple domains then we use multiple ontologies. Now in order to design a domain specific search engine for multiple domains, crawler must crawl through the domain specific Web pages in the WWW according to the predefined ontologies.

Mukhopadhyay, Debajyoti

2011-01-01

269

HyPursuit: A hierarchical network search engine that exploits content-link hypertext clustering  

Microsoft Academic Search

HyPursuit is a new hierarchical network search engine that clusters hypertext documents to structure a given information space for browsing and search activities. Our content-linkclustering algorithm is based on the semantic information embedded in hyperlink structures and document contents. HyPursuit admits multiple, coexisting cluster hierarchies based on di erent prin-ciples for grouping documents, such as the Library of Congress catalog

England. Weiss London; B Sheldon; C. Nemprempre; P. Szilagyi; A. Duda; D. K. Gifford

1979-01-01

270

HyPursuit: a hierarchical network search engine that exploits content-link hypertext clustering  

Microsoft Academic Search

HyPursuit is a new hierarchical network search engine that clusters hypertext documents to structure a given information space for browsing and search act ivities. Our content-link clustering algorithm is based on the semantic information embedded in hyperlink structures and document contents. HyPursuit admits multiple, coexisting cluster hierarchies based on different prin- ciples for grouping documents, such as the Library of

Ron Weiss; Bienvenido Vélez; Mark A. Sheldon; Chanathip Namprempre; Peter Szilagyi; Andrzej Duda; David K. Gifford

1996-01-01

271

Web Spam, Social Propaganda and the Evolution of Search Engine Rankings  

NASA Astrophysics Data System (ADS)

Search Engines have greatly influenced the way we experience the web. Since the early days of the web, users have been relying on them to get informed and make decisions. When the web was relatively small, web directories were built and maintained using human experts to screen and categorize pages according to their characteristics. By the mid 1990's, however, it was apparent that the human expert model of categorizing web pages does not scale. The first search engines appeared and they have been evolving ever since, taking over the role that web directories used to play.

Metaxas, Panagiotis Takis

272

A Thermoelectric Generator Using Engine Coolant for Light-Duty Internal Combustion Engine-Powered Vehicles  

NASA Astrophysics Data System (ADS)

We proposed and fabricated a thermoelectric generator (TEG) using the engine water coolant of passenger vehicles. The experimental results revealed that the maximum output power from the proposed thermoelectric generator was ~75 W, the calculated thermoelectric module efficiency of the TEG was ~2.1%, and the overall efficiency of electric power generation from the waste heat of the engine coolant was ~0.3% in the driving mode at 80 km/h. The conventional radiator can thus be replaced by the proposed TEG without additional devices or redesign of the engine water cooling system of the existing radiator.

Kim, Shiho; Park, Soonseo; Kim, Sunkook; Rhi, Seok-Ho

2011-05-01

273

Quantum optomechanical piston engines powered by heat  

E-print Network

We study two different models of optomechanical systems where a temperature gradient between two radiation baths is exploited for inducing self-sustained coherent oscillations of a mechanical resonator. Viewed from a thermodynamic perspective, such systems represent quantum instances of self-contained thermal machines converting heat into a periodic mechanical motion and thus they can be interpreted as nano-scale analogues of macroscopic piston engines. Our models are potentially suitable for testing fundamental aspects of quantum thermodynamics in the laboratory and for applications in energy efficient nanotechnology.

Andrea Mari; Alessandro Farace; Vittorio Giovannetti

2014-07-31

274

A geometry-based image search engine for advanced RADARSAT-1/2 GIS applications  

NASA Astrophysics Data System (ADS)

Space-borne Synthetic Aperture Radar (SAR) sensors, such as RADARSAT-1 and -2, enable a multitude of defense and security applications owing to their unique capabilities of cloud penetration, day/night imaging and multi-polarization imaging. As a result, advanced SAR image time series exploitation techniques such as Interferometric SAR (InSAR) and Radargrammetry are now routinely used in applications such as underground tunnel monitoring, infrastructure monitoring and DEM generation. Imaging geometry, as determined by the satellite orbit and imaged terrain, plays a critical role in the success of such techniques. This paper describes the architecture and the current status of development of a geometry-based search engine that allows the search and visualization of archived and future RADARSAT-1 and -2 images appropriate for a variety of advanced SAR techniques and applications. Key features of the search engine's scalable architecture include (a) Interactive GIS-based visualization of the search results; (b) A client-server architecture for online access that produces up-to-date searches of the archive images and that can, in future, be extended to acquisition planning; (c) A techniquespecific search mode, wherein an expert user explicitly sets search parameters to find appropriate images for advanced SAR techniques such as InSAR and Radargrammetry; (d) A future application-specific search mode, wherein all search parameters implicitly default to preset values according to the application of choice such as tunnel monitoring, DEM generation and deformation mapping; (f) Accurate baseline calculations for InSAR searches, and, optimum beam configuration for Radargrammetric searches; (g) Simulated quick look images and technique-specific sensitivity maps in the future.

Kotamraju, Vinay; Rabus, Bernhard; Busler, Jennifer

2012-06-01

275

Stability analysis of free piston Stirling engine power generation system  

NASA Astrophysics Data System (ADS)

This paper presents a stability analysis of the free-piston Stirling engine and linear alternator power generation system. Such a system operates under sustained mechanical oscillators, stability of the system is important for proper operation, and as a criterion in selecting the tuning capacitor. The stability criterion of the system is that the rate of change in power dissipation and electric power output is always faster than the rate of the power generated by the engine. The dynamic equations and model of the system are developed in this paper. Frequency domain analysis and Bode plot techniques are utilized in the study. The stable operating frequency region corresponding to different levels of power output are then determined.

Fu, Z. X.; Nasar, S. A.; Rosswurm, Mark

276

3. ELEVATIONS, ADDITION TO POWER HOUSE. United Engineering Company Ltd., ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

3. ELEVATIONS, ADDITION TO POWER HOUSE. United Engineering Company Ltd., Alameda Shipyard. John Hudspeth, architect, foot of Main Street, Alameda, California. Sheet 4. Plan no. 10,548. Scale 1/4 inch to the foot, elevations, and one inch to the foot, sections and details. April 30, 1945, last revised 6/19/45. pencil on vellum - United Engineering Company Shipyard, Boiler House, 2900 Main Street, Alameda, Alameda County, CA

277

14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.  

...airport, and thereafter to fly for 15 minutes at cruise power or thrust, or both, and that the consumption of fuel and oil after engine...airport, and thereafter to fly for 15 minutes at cruise power or thrust, or both; and (v) The consumption of fuel and oil...

2014-01-01

278

14 CFR 121.193 - Airplanes: Turbine engine powered: En route limitations: Two engines inoperative.  

Code of Federal Regulations, 2011 CFR

...airport, and thereafter to fly for 15 minutes at cruise power or thrust, or both, and that the consumption of fuel and oil after engine...airport, and thereafter to fly for 15 minutes at cruise power or thrust, or both; and (v) The consumption of fuel and oil...

2011-01-01

279

10 CFR Appendix S to Part 50 - Earthquake Engineering Criteria for Nuclear Power Plants  

Code of Federal Regulations, 2012 CFR

...Earthquake Engineering Criteria for Nuclear Power Plants S Appendix S to Part...Earthquake Engineering Criteria for Nuclear Power Plants General Information...appendix A to this part, to design nuclear power plant structures,...

2012-01-01

280

10 CFR Appendix S to Part 50 - Earthquake Engineering Criteria for Nuclear Power Plants  

...Earthquake Engineering Criteria for Nuclear Power Plants S Appendix S to Part...Earthquake Engineering Criteria for Nuclear Power Plants General Information...appendix A to this part, to design nuclear power plant structures,...

2014-01-01

281

10 CFR Appendix S to Part 50 - Earthquake Engineering Criteria for Nuclear Power Plants  

Code of Federal Regulations, 2013 CFR

...Earthquake Engineering Criteria for Nuclear Power Plants S Appendix S to Part...Earthquake Engineering Criteria for Nuclear Power Plants General Information...appendix A to this part, to design nuclear power plant structures,...

2013-01-01

282

The NASA Astrophysics Data System: The Search Engine and its User Interface  

Microsoft Academic Search

The ADS Abstract and Article Services provide access to the astronomical literature through the World Wide Web (WWW). The forms based user interface provides access to sophisticated searching capabilities that allow our users to find references in the fields of Astronomy, Physics\\/Geophysics, and astronomical Instrumentation and Engineering. The returned information includes links to other on-line information sources, creating an extensive

Guenther Eichhorn; Michael J. Kurtz; Alberto Accomazzi; Carolyn S. Grant; Stephen S. Murray

2000-01-01

283

A Search Engine for 3D Models THOMAS FUNKHOUSER, PATRICK MIN, MICHAEL KAZHDAN,  

E-print Network

models. We present a web-based search engine system that supports queries based on 3D sketches, 2D algorithm that uses spherical harmonics to compute discriminating similarity measures without requiring/hard copy of all or part of this material without fee for personal or classroom use provided that the copies

Jacobs, David

284

Towards a Transmedia Search Engine: A User Study on Perceiving Analogies in Multimedia Data  

E-print Network

become a reliable and fast way to archive and share multimedia data such as music, images, and videos.g., the video game Rez [1]). Inspired by this phenomenon, we are building a Transmedia Search Engine to enable analogies across different media forms (e.g., audio, images, videos) by looking at structural, content

Dinh, H. Quynh

285

Detecting influenza epidemics using search engine query data 1 Detecting influenza epidemics using  

E-print Network

Detecting influenza epidemics using search engine query data 1 Detecting influenza epidemics using://dx.doi.org/10.1038/nature07634 Epidemics of seasonal influenza are a major public health concern, causing tens to seasonal influenza, a new strain of influenza virus against which no prior immunity exists

Caverlee, James

286

Transportation Engineering University of Florida Revised: 2/3/09 Literature Search Strategies and Resources  

E-print Network

Transportation Engineering University of Florida Revised: 2/3/09 Literature Search Strategies information from transportation journals, conferences proceedings, research reports and ongoing researchLink http://springerlink.com/home/main.mpx · Elsevier Transport Connect www.transportconnect.net Note

Slatton, Clint

287

Systems Engineering for the Kepler Mission: A Search for Terrestrial Planets  

E-print Network

of the WIRE, Mars 98, CONTOUR, and Beagle missions. Mishap reports for the latter missions repeatedly identifySystems Engineering for the Kepler Mission: A Search for Terrestrial Planets Riley Duren*a , Karen mission will launch in 2007 and determine the distribution of earth-size planets (0.5 to 10 earth masses

Rhoads, James

288

Is Google enough? Comparison of an internet search engine with academic library resources  

Microsoft Academic Search

Purpose – The purpose of the study was to compare an internet search engine, Google, with appropriate library databases and systems, in order to assess the relative value, strengths and weaknesses of the two sorts of system. Design\\/methodology\\/approach – A case study approach was used, with detailed analysis and failure checking of results. The performance of the two systems was

Jan Brophy; David Bawden

2005-01-01

289

Cache-aware load balancing vs. cooperative caching for distributed search engines  

Microsoft Academic Search

In this paper we study the performance of a distributed search engine from a data caching point of view. We compare and combine two different approaches to achieve better hit rates: (a) send the queries to the node which currently has the related data in its local memory (cache-aware load balancing), and (b) send the cached contents to the node

David Dominguez-sal; Marta Pérez-casany; Josep-lluis Larriba-pey

2009-01-01

290

Web Dynamics and their Ramifications for the Development of Web Search Engines  

E-print Network

Web Dynamics and their Ramifications for the Development of Web Search Engines Yiping Ke Lin Deng Email: {keyiping, ldeng, wilfred, dlee}@cs.ust.hk Abstract The World Wide Web has become the largest with conven- tional information sources, the Web is highly dynamic in the following four factors: size (i

Ng, Wilfred Siu Hung

291

Specialized Search Engine with AI P H I L I P T H O R N  

E-print Network

focus mainly on the static content of the web. Since more and more websites are being created of designing, developing and evaluating a search engine for dynamic data in the form of second hand products with dynamic pages, i.e. with server side scripts that queries a database and creates web pages "on the fly

Maguire Jr., Gerald Q.

292

A Music Search Engine Built upon Audio-based and Web-based Similarity Measures  

E-print Network

language. While existing approaches de- pend on explicit manual annotations and meta-data assigned language de- scriptors for images, videos, and ­ of course ­ text, the broad field of (popular) music hasA Music Search Engine Built upon Audio-based and Web-based Similarity Measures Peter Knees1 , Tim

Widmer, Gerhard

293

A Music Search Engine Built upon Audiobased and Webbased Similarity Measures  

E-print Network

language. While existing approaches de­ pend on explicit manual annotations and meta­data assigned language de­ scriptors for images, videos, and -- of course -- text, the broad field of (popular) music hasA Music Search Engine Built upon Audio­based and Web­based Similarity Measures Peter Knees 1 , Tim

Widmer, Gerhard

294

Orion: A Software Project Search Engine with Integrated Diverse Software Artifacts  

E-print Network

Orion: A Software Project Search Engine with Integrated Diverse Software Artifacts Tegawend´e F@labri.fr, ferdianthung@smu.edu.sg, davidlo@smu.edu.sg, lxjiang@smu.edu.sg, reveillere@labri.fr Abstract--Software- searchers collect project data for building experimental datasets; software programmers reuse code from

Paris-Sud XI, Université de

295

A Performance Evaluation Framework for Library Search Engines Maria Soledad Pera  

E-print Network

the collection of materials held by a public or private library. for retrieving library records relevant to QA Performance Evaluation Framework for Library Search Engines Maria Soledad Pera Computer Science University Provo, Utah, U.S.A. Abstract--Libraries offer valuable resources to library pa- trons

Ng, Yiu-Kai Dennis

296

Uncovering the Hidden Web, Part I: Finding What the Search Engines Don't. ERIC Digest.  

ERIC Educational Resources Information Center

Currently, the World Wide Web contains an estimated 7.4 million sites (OCLC, 2001). Yet even the most experienced searcher, using the most robust search engines, can access only about 16% of these pages (Dahn, 2001). The other 84% of the publicly available information on the Web is referred to as the "hidden,""invisible," or "deep" Web. This…

Mardis, Marcia

297

Disaster SitRep -A Vertical Search Engine and Information Analysis Tool in Disaster Management Domain  

E-print Network

Disaster SitRep - A Vertical Search Engine and Information Analysis Tool in Disaster Management at the right time. Needs for heterogeneous information integration in disaster management domain: People have and multimedia data like images and videos. However, information management and processing in disaster management

Chen, Shu-Ching

298

Evaluation of Web-Based Search Engines from the End-User's Perspective: A Pilot Study.  

ERIC Educational Resources Information Center

Examines the effectiveness of four Web-based search engines--Alta Visa, infoseek, Lycos, and Open Text--from users' perspectives. Results show that although Lycos has the best relevance ranking performance and highest precision ratio, Alta Vista has the best connectivity, highest user satisfaction ratios for precision and three components of…

Su, Louise T.; Chen, Hsin-liang; Dong, Xiaoying

1998-01-01

299

FaceTracer: A Search Engine for Large Collections of Images with Faces  

E-print Network

to grow daily. Our classification approach uses a novel combination of Support Vector Machines and Ad children." This face search engine can be directed at all images on the internet, tailored toward specific of images: the manual labeling of images is time- consuming; the annotations are often incorrect

Anderson, Richard

300

Duke Engineering explores huge African Power Project  

SciTech Connect

Duke Engineering & Services and the African Republic of Uganda have entered into a memorandum of understanding to explore the feasibility of installing one or more hydropower plants along the Nile River and building a 2,000 mile transmission line through southern Africa. The project`s participants say they envision a southern African electricity grid connecting all countries in the region. A team comprised of officials from DE&S, Edlow and SAD-ELEC will conduct a six-month, two-part study on the feasibility of linking the existing grid system in the region. The first part of the study will look at the feasibility of installing one or more independent hydropower plants along the Nile and other rivers in Uganda. The second part will explore the design, construction and operation of a transmission system to interconnect Uganda, through neighboring countries to the south and east, to the Republic of South Africa. The site for the proposed hydroelectric plant will determine the route of the transmission line.

Newman, P.

1994-10-14

301

Satellite power system: Engineering and economic analysis summary  

NASA Technical Reports Server (NTRS)

A system engineering and economic analysis was conducted to establish typical reference baselines for the photovoltaic, solar thermal, and nuclear satellite power systems. Tentative conclusions indicate that feasibility and economic viability are characteristic of the Satellite Power System. Anticipated technology related to manufacturing, construction, and maintenance operations is described. Fuel consumption, environmental effects, and orbital transfer are investigated. Space shuttles, local space transportation, and the heavy lift launch vehicle required are also discussed.

1976-01-01

302

PIVOT and Other Funding Search Engines Here you can access the funding opportunities databases and resources to which SU  

E-print Network

PIVOT and Other Funding Search Engines - 1 - Here you can access the funding opportunities and similar search engines can also be useful tools to find funding opportunities. Subscription databases May for Grants and Contracts NIH Office of Behavioral and Social Sciences Research Funding Opportunities NSF

McConnell, Terry

303

Chapter 9 From search engines to question answering systems — The problems of world knowledge, relevance, deduction and precisiation  

Microsoft Academic Search

Existing search engines, with Google at the top, have many truly remarkable capabilities. Furthermore, constant progress is being made in improving their performance. But what is not widely recognized is that there is a basic capability which existing search engines do not have: deduction capability — the capability to synthesize an answer to a query by drawing on bodies of

Lotfi A. Zadeh

2006-01-01

304

Engineering the storage battery as an underwater power supply  

Microsoft Academic Search

Engineering of the storage battery into an integrated oceanographic power system has been successfully accomplished. This is evidenced by the scores of systems in operation below the seas today. This accomplishment was made possible by the development of a sophisticated pressure compensation system and applying it to existing electrochemical couples. Comprehensive studies of lead-acid and silver zinc cell operating characteristics

K. K. BERJU; E. L. DANIELS; E. M. STROHLEIN

1973-01-01

305

Nitinol Heat Engine power plant system installation and cost optimization  

Microsoft Academic Search

Nitinol Heat Engines (NHE) use a shape memory alloy of nickel and titanium to directly convert the thermal energy in hot water to mechanical power (and, through a generator, to electricity). The authors designed a commercial version of a NHE based on the thermoturbine configuration developed in prototype form under contract to the Department of Energy in 1978-1980. The operation

E. C. Cady; J. L. McNichols

1984-01-01

306

Safety issues in SSTO spacecraft powered by antimatter rocket engines  

Microsoft Academic Search

Safety issues related to operating an antimatter-powered spacecraft in the atmosphere are examined. Radiation danger from the high-energy gamma radiation produced by the annihilation reaction, radioactivity induced in the rocket engine because of photonuclear interactions between gamma radiation and shield nuclei, and antimatter containment failure are discussed in detail. The dangers to the public and the crew and payload are

Christopher Tarpley; Mark J. Lewis; Ajay Kothari

1990-01-01

307

PERFORMANCE OF A STIRLING ENGINE POWERED HEAT ACTIVATED HEAT PUMP  

E-print Network

the attractiveness of the present concept. SYSTEM DESCRIPTION The heat activated heat pump (HAHP) employs a primePERFORMANCE OF A STIRLING ENGINE POWERED HEAT ACTIVATED HEAT PUMP W. D. C. Richards and W. L. Auxer General Electric Company Space Division King of Prussia, Pa. ABSTRACT A heat activated heat pump (HAHP

Oak Ridge National Laboratory

308

14 CFR 135.377 - Large transport category airplanes: Reciprocating engine powered: Landing limitations: Alternate...  

Code of Federal Regulations, 2013 CFR

...false Large transport category airplanes: Reciprocating engine powered...PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations...377 Large transport category airplanes: Reciprocating engine...

2013-01-01

309

An Open-source Framework for Board Games and Go Engine Based on Monte-Carlo Tree Search  

E-print Network

FUEGO ­ An Open-source Framework for Board Games and Go Engine Based on Monte-Carlo Tree Search of theory and practice. Advances in theory, such as Monte- Carlo Tree Search (MCTS) and the UCT algorithm [1]. Recently, the scope of Monte-Carlo tree search methods has greatly expanded to include many other games [9

MĂĽller, Martin

310

Developing a distributed HTML5-based search engine for geospatial resource discovery  

NASA Astrophysics Data System (ADS)

With explosive growth of data, Geospatial Cyberinfrastructure(GCI) components are developed to manage geospatial resources, such as data discovery and data publishing. However, the efficiency of geospatial resources discovery is still challenging in that: (1) existing GCIs are usually developed for users of specific domains. Users may have to visit a number of GCIs to find appropriate resources; (2) The complexity of decentralized network environment usually results in slow response and pool user experience; (3) Users who use different browsers and devices may have very different user experiences because of the diversity of front-end platforms (e.g. Silverlight, Flash or HTML). To address these issues, we developed a distributed and HTML5-based search engine. Specifically, (1)the search engine adopts a brokering approach to retrieve geospatial metadata from various and distributed GCIs; (2) the asynchronous record retrieval mode enhances the search performance and user interactivity; (3) the search engine based on HTML5 is able to provide unified access capabilities for users with different devices (e.g. tablet and smartphone).

ZHOU, N.; XIA, J.; Nebert, D.; Yang, C.; Gui, Z.; Liu, K.

2013-12-01

311

A low-power content-addressable memory (CAM) using pipelined hierarchical search scheme  

Microsoft Academic Search

Abstract: This paper presents two techniques to reduce power consumption in content-addressable memories (CAMs). The first technique is to pipeline the search operation by breaking the match-lines into several segments. Since most stored words fail to match in their first segments, the search operation is discontinued for subsequent segments, hence reducing power. The second technique is to broadcast small-swing search

K. Pagiamtzis; A. Sheikholeslami

2004-01-01

312

What is the prevalence of health-related searches on the World Wide Web? Qualitative and quantitative analysis of search engine queries on the Internet  

PubMed Central

While health information is often said to be the most sought after information on the web, empirical data on the actual frequency of health-related searches on the web are missing. In the present study we aimed to determine the prevalence of health-related searches on the web by analyzing search terms entered by people into popular search engines. We also made some preliminary attempts in qualitatively describing and classifying these searches. Occasional difficulties in determining what constitutes a “health-related” search led us to propose and validate a simple method to automatically classify a search string as “health-related”. This method is based on determining the proportion of pages on the web containing the search string and the word “health”, as a proportion of the total number of pages with the search string alone. Using human codings as gold standard we plotted a ROC curve and determined empirically that if this “co-occurance rate” is larger than 35%, the search string can be said to be health-related (sensitivity: 85.2%, specificity 80.4%). The results of our “human” codings of search queries determined that about 4.5% of all searches are “health-related”. We estimate that globally a minimum of 6.75 Million health-related searches are being conducted on the web every day, which is roughly the same number of searches that have been conducted on the NLM Medlars system in 1996 in a full year. PMID:14728167

Eysenbach, G.; Kohler, Ch.

2003-01-01

313

Google and Women’s Health-Related Issues: What Does the Search Engine Data Reveal?  

PubMed Central

Objectives Identifying the gaps in public knowledge of women’s health related issues has always been difficult. With the increasing number of Internet users in the United States, we sought to use the Internet as a tool to help us identify such gaps and to estimate women’s most prevalent health concerns by examining commonly searched health-related keywords in Google search engine. Methods We collected a large pool of possible search keywords from two independent practicing obstetrician/gynecologists and classified them into five main categories (obstetrics, gynecology, infertility, urogynecology/menopause and oncology), and measured the monthly average search volume within the United States for each keyword with all its possible combinations using Google AdWords tool. Results We found that pregnancy related keywords were less frequently searched in general compared to other categories with an average of 145,400 hits per month for the top twenty keywords. Among the most common pregnancy-related keywords was “pregnancy and sex’ while pregnancy-related diseases were uncommonly searched. HPV alone was searched 305,400 times per month. Of the cancers affecting women, breast cancer was the most commonly searched with an average of 247,190 times per month, followed by cervical cancer then ovarian cancer. Conclusion The commonly searched keywords are often issues that are not discussed in our daily practice as well as in public health messages. The search volume is relatively related to disease prevalence with the exception of ovarian cancer which could signify a public fear.

Baazeem, Mazin

2014-01-01

314

Investigation on power output of the gamma-configuration low temperature differential Stirling engines  

Microsoft Academic Search

This paper provides a study on power output determination of a gamma-configuration, low temperature differential Stirling engine. The former works on the calculation of Stirling engine power output are discussed. Results from this study indicate that the mean pressure power formula is most appropriate for the calculation of a gamma-configuration, low temperature differential Stirling engine power output.

Bancha Kongtragool; Somchai Wongwises

2005-01-01

315

Reactive power dispatch in wind farms using particle swarm optimization technique and feasible solutions search  

Microsoft Academic Search

In this paper, an optimization method for the reactive power dispatch in wind farms (WF) is presented. Particle swarm optimization (PSO), combined with a feasible solution search (FSSPSO) is applied in order to optimize the reactive power dispatch, taking into consideration the reactive power requirement at point of common coupling (PCC), while active power losses are minimized in a WF.

Marcela Martinez-Rojas; Andreas Sumper; Oriol Gomis-Bellmunt; Antoni Sudriŕ-Andreu

2011-01-01

316

Trends in high power laser applications in civil engineering  

NASA Astrophysics Data System (ADS)

This paper reviews the research and development efforts made on the use of lasers for material processing in the civil engineering industry. Initial investigations regarding the possibility of using lasers in civil engineering were made in the 1960s and '70s, the target being rock excavation. At that time however, the laser powers available were too small for any practical application utilization. In the 1980's, the technology of laser surface cleaning of historically important structures was developed in Europe. In the early 1990s, techniques of laser surface modification, including glazing and coloring of concrete, roughening of granite stones, carbonization of wood were pursued, mainly in Japan. In the latter part of the decade, techniques of laser decontamination of concrete surfaces in nuclear facilities were developed in many countries, and field tests were caried out in Japan. The rapid advances in development of diode lasers and YAG lasers with high power outputs and efficiencies since the late 1990's have led to a revival of worldwide interest in the use of lasers for material processing in civil engineering. The authors believe that, in the next 10 years or so, the advent of compact high power lasers is likely to lead to increased use of lasers of material processing in the field of civil engineering.

Wignarajah, Sivakumaran; Sugimoto, Kenji; Nagai, Kaori

2005-03-01

317

Nowcasting economic and social data: when and why search engine data fails, an illustration using Google Flu Trends  

E-print Network

Obtaining an accurate picture of the current state of the economy is particularly important to central banks and finance ministries, and of epidemics to health ministries. There is increasing interest in the use of search engine data to provide such 'nowcasts' of social and economic indicators. However, people may search for a phrase because they independently want the information, or they may search simply because many others are searching for it. We consider the effect of the motivation for searching on the accuracy of forecasts made using search engine data of contemporaneous social and economic indicators. We illustrate the implications for forecasting accuracy using four episodes in which Google Flu Trends data gave accurate predictions of actual flu cases, and four in which the search data over-predicted considerably. Using a standard statistical methodology, the Bass diffusion model, we show that the independent search for information motive was much stronger in the cases of accurate prediction than in...

Ormerod, Paul; Bentley, R Alexander

2014-01-01

318

Using Ontology Search Engines to support Users and Intelligent Systems solving a range of tasks  

NASA Astrophysics Data System (ADS)

The paper describes several classes of tasks namely solving word problems, and classifying datasets using machine learning techniques, where the tasks may not be solvable because the information provided is incomplete. We explore the situation where one has a central concept and the missing information can either be a further descriptor / field of that concept or a (distantly) related concept. We describe how an ontology search engine has assisted in solving such problems, by summarizing the frequency of occurrence of descriptors found in a group of relevant ontologies, and by reporting which concepts are related to the central concept. The search engine used in this work has been ONTOSEARCH2. We further speculate about how such a "concept web" might be used to support the analysis and generation of natural language texts as well as spoken language.

Sleeman, D.; Thomas, E.; Aiken, A.

319

A music search engine built upon audio-based and web-based similarity measures  

Microsoft Academic Search

An approach is presented to automatically build a search engine for large-scale music collections that can be queried through natural language. While existing approaches de- pend on explicit manual annotations and meta-data assigned to the individual audio pieces, we automatically derive de- scriptions by making use of methods from Web Retrieval and Music Information Retrieval. Based on the ID3 tags

Peter Knees; Tim Pohle; Markus Schedl; Gerhard Widmer

2007-01-01

320

Search Engines and Expertise about Global Issues: Well-defined Landscape or Undomesticated Wilderness?  

Microsoft Academic Search

This chapter investigates the ‘winner-takes-all’ hypothesis in relation to how academic researchers access online sources\\u000a and resources. Some have argued that the Web provides access to a wider range of sources of information than offline resources.\\u000a Others, such as Hindman et al. (2003), have shown that access to online resources is highly concentrated, particularly because\\u000a of how Internet search engines

J. Fry; S. Virkar; R. Schroeder

2008-01-01

321

Search IQ  

NSDL National Science Digital Library

Yet another in a large collection of sites on search engines, Search IQ is notable for two features. First, its collection of search engine reviews is rather extensive, covering far more than the usual dozen or so listed at most search engine review sites. Although rankings and full reviews are offered for only 17 engines, the individual and meta-search engine listings offer at least a sentence or two on many more. The other key section of the site is a fairly large directory of specialized search engines, organized by subject. Additional resources at the site include daily tips, tutorials and guides, and a listing of new search engines.

322

Speed And Power Control Of An Engine By Modulation Of The Load Torque  

DOEpatents

A system and method of speed and power control for an engine in which speed and power of the engine is controlled by modulation of the load torque. The load torque is manipulated in order to cause engine speed, and hence power to be changed. To accomplish such control, the load torque undergoes a temporary excursion in the opposite direction of the desired speed and power change. The engine and the driven equipment will accelerate or decelerate accordingly as the load torque is decreased or increased, relative to the essentially fixed or constant engine torque. As the engine accelerates or decelerates, its power increases or decreases in proportion.

Ziph, Benjamin (Ann Arbor, MI); Strodtman, Scott (Ypsilanti, MI); Rose, Thomas K (Chelsea, MI)

1999-01-26

323

Computer aided power flow software engineering and code generation  

SciTech Connect

In this paper a software engineering concept is described which permits the automatic solution of a non-linear set of network equations. The power flow equation set can be seen as a defined subset of a network equation set. The automated solution process is the numerical Newton-Raphson solution process of the power flow equations where the key code parts are the numeric mismatch and the numeric Jacobian term computation. It is shown that both the Jacobian and the mismatch term source code can be automatically generated in a conventional language such as Fortran or C. Thereby one starts from a high level, symbolic language with automatic differentiation and code generation facilities. As a result of this software engineering process an efficient, very high quality newton-Raphson solution code is generated which allows easier implementation of network equation model enhancements and easier code maintenance as compared to hand-coded Fortran or C code.

Bacher, R. [Swiss Federal Inst. of Tech., Zuerich (Switzerland)] [Swiss Federal Inst. of Tech., Zuerich (Switzerland)

1996-02-01

324

Computer aided power flow software engineering and code generation  

SciTech Connect

In this paper a software engineering concept is described which permits the automatic solution of a non-linear set of network equations. The power flow equation set can be seen as a defined subset of a network equation set. The automated solution process is the numerical Newton-Raphson solution process of the power flow equations where the key code parts are the numeric mismatch and the numeric Jacobian term computation. It is shown that both the Jacobian and the mismatch term source code can be automatically generated in a conventional language such as Fortran or C. Thereby one starts from a high level, symbolic language with automatic differentiation and code generation facilities. As a result of this software engineering process an efficient, very high quality Newton-Raphson solution code is generated which allows easier implementation of network equation model enhancements and easier code maintenance as compared to hand-coded Fortran or C code.

Bacher, R. [Swiss Federal Inst. of Tech., Zuerich (Switzerland)

1995-12-31

325

14 CFR 121.187 - Airplanes: Reciprocating engine-powered: Landing limitations: Alternate airport.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.187 Airplanes: Reciprocating engine-powered:...

2013-01-01

326

14 CFR 121.177 - Airplanes: Reciprocating engine-powered: Takeoff limitations.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Airplanes: Reciprocating engine-powered: Takeoff...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.177 Airplanes: Reciprocating engine-powered:...

2013-01-01

327

14 CFR 23.1045 - Cooling test procedures for turbine engine powered airplanes.  

Code of Federal Regulations, 2011 CFR

...procedures for turbine engine powered airplanes. 23.1045 Section 23.1045 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1045...procedures for turbine engine powered airplanes. (a) Compliance with §...

2011-01-01

328

14 CFR 121.331 - Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered...  

Code of Federal Regulations, 2013 CFR

...Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered airplanes. 121.331 Section 121.331 Aeronautics...Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered...

2013-01-01

329

14 CFR 23.1045 - Cooling test procedures for turbine engine powered airplanes.  

Code of Federal Regulations, 2013 CFR

...procedures for turbine engine powered airplanes. 23.1045 Section 23.1045 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1045...procedures for turbine engine powered airplanes. (a) Compliance with §...

2013-01-01

330

14 CFR 121.331 - Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered...  

Code of Federal Regulations, 2012 CFR

...Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered airplanes. 121.331 Section 121.331 Aeronautics...Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered...

2012-01-01

331

14 CFR 121.197 - Airplanes: Turbine engine powered: Landing limitations: Alternate airports.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Airplanes: Turbine engine powered: Landing limitations...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.197 Airplanes: Turbine engine powered: Landing...

2010-01-01

332

14 CFR 121.187 - Airplanes: Reciprocating engine-powered: Landing limitations: Alternate airport.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.187 Airplanes: Reciprocating engine-powered:...

2011-01-01

333

14 CFR 121.197 - Airplanes: Turbine engine powered: Landing limitations: Alternate airports.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Airplanes: Turbine engine powered: Landing limitations...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.197 Airplanes: Turbine engine powered: Landing...

2011-01-01

334

14 CFR 121.197 - Airplanes: Turbine engine powered: Landing limitations: Alternate airports.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Airplanes: Turbine engine powered: Landing limitations...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.197 Airplanes: Turbine engine powered: Landing...

2013-01-01

335

14 CFR 121.177 - Airplanes: Reciprocating engine-powered: Takeoff limitations.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Airplanes: Reciprocating engine-powered: Takeoff...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.177 Airplanes: Reciprocating engine-powered:...

2011-01-01

336

14 CFR 121.175 - Airplanes: Reciprocating engine-powered: Weight limitations.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Airplanes: Reciprocating engine-powered: Weight...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.175 Airplanes: Reciprocating engine-powered:...

2013-01-01

337

14 CFR 23.1047 - Cooling test procedures for reciprocating engine powered airplanes.  

Code of Federal Regulations, 2011 CFR

...procedures for reciprocating engine powered airplanes. 23.1047 Section 23.1047 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1047...procedures for reciprocating engine powered airplanes. Compliance with § 23.1041...

2011-01-01

338

14 CFR 23.1047 - Cooling test procedures for reciprocating engine powered airplanes.  

Code of Federal Regulations, 2012 CFR

...procedures for reciprocating engine powered airplanes. 23.1047 Section 23.1047 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1047...procedures for reciprocating engine powered airplanes. Compliance with § 23.1041...

2012-01-01

339

14 CFR 121.327 - Supplemental oxygen: Reciprocating engine powered airplanes.  

Code of Federal Regulations, 2013 CFR

...oxygen: Reciprocating engine powered airplanes. 121.327 Section 121.327 Aeronautics...oxygen: Reciprocating engine powered airplanes. (a) General. Except where supplemental...121.331, no person may operate an airplane unless supplemental oxygen is...

2013-01-01

340

14 CFR 121.175 - Airplanes: Reciprocating engine-powered: Weight limitations.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Airplanes: Reciprocating engine-powered: Weight...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.175 Airplanes: Reciprocating engine-powered:...

2012-01-01

341

14 CFR 23.1047 - Cooling test procedures for reciprocating engine powered airplanes.  

Code of Federal Regulations, 2010 CFR

...procedures for reciprocating engine powered airplanes. 23.1047 Section 23.1047 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1047...procedures for reciprocating engine powered airplanes. Compliance with § 23.1041...

2010-01-01

342

14 CFR 121.185 - Airplanes: Reciprocating engine-powered: Landing limitations: Destination airport.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.185 Airplanes: Reciprocating engine-powered:...

2012-01-01

343

14 CFR 121.331 - Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered...  

...Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered airplanes. 121.331 Section 121.331 Aeronautics...Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered...

2014-01-01

344

14 CFR 121.175 - Airplanes: Reciprocating engine-powered: Weight limitations.  

...2014-01-01 2014-01-01 false Airplanes: Reciprocating engine-powered: Weight...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.175 Airplanes: Reciprocating engine-powered:...

2014-01-01

345

14 CFR 121.177 - Airplanes: Reciprocating engine-powered: Takeoff limitations.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Airplanes: Reciprocating engine-powered: Takeoff...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.177 Airplanes: Reciprocating engine-powered:...

2010-01-01

346

14 CFR 121.185 - Airplanes: Reciprocating engine-powered: Landing limitations: Destination airport.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.185 Airplanes: Reciprocating engine-powered:...

2011-01-01

347

14 CFR 121.175 - Airplanes: Reciprocating engine-powered: Weight limitations.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Airplanes: Reciprocating engine-powered: Weight...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.175 Airplanes: Reciprocating engine-powered:...

2010-01-01

348

14 CFR 121.175 - Airplanes: Reciprocating engine-powered: Weight limitations.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Airplanes: Reciprocating engine-powered: Weight...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.175 Airplanes: Reciprocating engine-powered:...

2011-01-01

349

14 CFR 23.1045 - Cooling test procedures for turbine engine powered airplanes.  

Code of Federal Regulations, 2010 CFR

...procedures for turbine engine powered airplanes. 23.1045 Section 23.1045 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1045...procedures for turbine engine powered airplanes. (a) Compliance with §...

2010-01-01

350

14 CFR 121.185 - Airplanes: Reciprocating engine-powered: Landing limitations: Destination airport.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.185 Airplanes: Reciprocating engine-powered:...

2010-01-01

351

14 CFR 121.327 - Supplemental oxygen: Reciprocating engine powered airplanes.  

Code of Federal Regulations, 2012 CFR

...oxygen: Reciprocating engine powered airplanes. 121.327 Section 121.327 Aeronautics...oxygen: Reciprocating engine powered airplanes. (a) General. Except where supplemental...121.331, no person may operate an airplane unless supplemental oxygen is...

2012-01-01

352

14 CFR 23.1047 - Cooling test procedures for reciprocating engine powered airplanes.  

Code of Federal Regulations, 2013 CFR

...procedures for reciprocating engine powered airplanes. 23.1047 Section 23.1047 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1047...procedures for reciprocating engine powered airplanes. Compliance with § 23.1041...

2013-01-01

353

14 CFR 121.185 - Airplanes: Reciprocating engine-powered: Landing limitations: Destination airport.  

...2014-01-01 2014-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.185 Airplanes: Reciprocating engine-powered:...

2014-01-01

354

14 CFR 121.197 - Airplanes: Turbine engine powered: Landing limitations: Alternate airports.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Airplanes: Turbine engine powered: Landing limitations...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.197 Airplanes: Turbine engine powered: Landing...

2012-01-01

355

14 CFR 121.197 - Airplanes: Turbine engine powered: Landing limitations: Alternate airports.  

...2014-01-01 2014-01-01 false Airplanes: Turbine engine powered: Landing limitations...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.197 Airplanes: Turbine engine powered: Landing...

2014-01-01

356

14 CFR 23.1047 - Cooling test procedures for reciprocating engine powered airplanes.  

...procedures for reciprocating engine powered airplanes. 23.1047 Section 23.1047 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1047...procedures for reciprocating engine powered airplanes. Compliance with § 23.1041...

2014-01-01

357

14 CFR 23.1045 - Cooling test procedures for turbine engine powered airplanes.  

Code of Federal Regulations, 2012 CFR

...procedures for turbine engine powered airplanes. 23.1045 Section 23.1045 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1045...procedures for turbine engine powered airplanes. (a) Compliance with §...

2012-01-01

358

14 CFR 121.177 - Airplanes: Reciprocating engine-powered: Takeoff limitations.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Airplanes: Reciprocating engine-powered: Takeoff...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.177 Airplanes: Reciprocating engine-powered:...

2012-01-01

359

14 CFR 121.187 - Airplanes: Reciprocating engine-powered: Landing limitations: Alternate airport.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.187 Airplanes: Reciprocating engine-powered:...

2012-01-01

360

14 CFR 121.187 - Airplanes: Reciprocating engine-powered: Landing limitations: Alternate airport.  

...2014-01-01 2014-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.187 Airplanes: Reciprocating engine-powered:...

2014-01-01

361

14 CFR 23.1045 - Cooling test procedures for turbine engine powered airplanes.  

...procedures for turbine engine powered airplanes. 23.1045 Section 23.1045 Aeronautics...UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1045...procedures for turbine engine powered airplanes. (a) Compliance with §...

2014-01-01

362

14 CFR 121.185 - Airplanes: Reciprocating engine-powered: Landing limitations: Destination airport.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.185 Airplanes: Reciprocating engine-powered:...

2013-01-01

363

14 CFR 121.187 - Airplanes: Reciprocating engine-powered: Landing limitations: Alternate airport.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Airplanes: Reciprocating engine-powered: Landing...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.187 Airplanes: Reciprocating engine-powered:...

2010-01-01

364

14 CFR 121.177 - Airplanes: Reciprocating engine-powered: Takeoff limitations.  

...2014-01-01 2014-01-01 false Airplanes: Reciprocating engine-powered: Takeoff...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.177 Airplanes: Reciprocating engine-powered:...

2014-01-01

365

Increasing Student Interest and Comprehension in Power Engineering Education at the Graduate and Undergraduate Levels  

E-print Network

Increasing Student Interest and Comprehension in Power Engineering Education at the Graduate engineering is portrayed to students. The motivation is the recognition of the new deregulated at several universities including Arizona State University. Keywords: education; power electronics; energy

366

Power beaming. (Latest citations from the INSPEC database). Published Search  

SciTech Connect

The bibliography contains citations concerning the generation and transmission of power beams. Topics include solar power stations, Earth-space power beaming, power storage, and laser beams. Design and development activities at China Lake, CA station are reviewed. (Contains a minimum of 86 citations and includes a subject term index and title list.)

Not Available

1994-06-01

367

Conceptual design of single turbofan engine powered light aircraft  

NASA Technical Reports Server (NTRS)

The conceptual design of a four place single turbofan engine powered light aircraft was accomplished utilizing contemporary light aircraft conventional design techniques as a means of evaluating the NASA-Ames General Aviation Synthesis Program (GASP) as a preliminary design tool. In certain areas, disagreement or exclusion were found to exist between the results of the conventional design and GASP processes. Detail discussion of these points along with the associated contemporary design methodology are presented.

Snyder, F. S.; Voorhees, C. G.; Heinrich, A. M.; Baisden, D. N.

1977-01-01

368

GoWeb: a semantic search engine for the life science web  

PubMed Central

Background Current search engines are keyword-based. Semantic technologies promise a next generation of semantic search engines, which will be able to answer questions. Current approaches either apply natural language processing to unstructured text or they assume the existence of structured statements over which they can reason. Results Here, we introduce a third approach, GoWeb, which combines classical keyword-based Web search with text-mining and ontologies to navigate large results sets and facilitate question answering. We evaluate GoWeb on three benchmarks of questions on genes and functions, on symptoms and diseases, and on proteins and diseases. The first benchmark is based on the BioCreAtivE 1 Task 2 and links 457 gene names with 1352 functions. GoWeb finds 58% of the functional GeneOntology annotations. The second benchmark is based on 26 case reports and links symptoms with diseases. GoWeb achieves 77% success rate improving an existing approach by nearly 20%. The third benchmark is based on 28 questions in the TREC genomics challenge and links proteins to diseases. GoWeb achieves a success rate of 79%. Conclusion GoWeb's combination of classical Web search with text-mining and ontologies is a first step towards answering questions in the biomedical domain. GoWeb is online at: PMID:19796404

Dietze, Heiko; Schroeder, Michael

2009-01-01

369

Hydra: a scalable proteomic search engine which utilizes the Hadoop distributed computing framework  

PubMed Central

Background For shotgun mass spectrometry based proteomics the most computationally expensive step is in matching the spectra against an increasingly large database of sequences and their post-translational modifications with known masses. Each mass spectrometer can generate data at an astonishingly high rate, and the scope of what is searched for is continually increasing. Therefore solutions for improving our ability to perform these searches are needed. Results We present a sequence database search engine that is specifically designed to run efficiently on the Hadoop MapReduce distributed computing framework. The search engine implements the K-score algorithm, generating comparable output for the same input files as the original implementation. The scalability of the system is shown, and the architecture required for the development of such distributed processing is discussed. Conclusion The software is scalable in its ability to handle a large peptide database, numerous modifications and large numbers of spectra. Performance scales with the number of processors in the cluster, allowing throughput to expand with the available resources. PMID:23216909

2012-01-01

370

Development of a Google-based search engine for data mining radiology reports.  

PubMed

The aim of this study is to develop a secure, Google-based data-mining tool for radiology reports using free and open source technologies and to explore its use within an academic radiology department. A Health Insurance Portability and Accountability Act (HIPAA)-compliant data repository, search engine and user interface were created to facilitate treatment, operations, and reviews preparatory to research. The Institutional Review Board waived review of the project, and informed consent was not required. Comprising 7.9 GB of disk space, 2.9 million text reports were downloaded from our radiology information system to a fileserver. Extensible markup language (XML) representations of the reports were indexed using Google Desktop Enterprise search engine software. A hypertext markup language (HTML) form allowed users to submit queries to Google Desktop, and Google's XML response was interpreted by a practical extraction and report language (PERL) script, presenting ranked results in a web browser window. The query, reason for search, results, and documents visited were logged to maintain HIPAA compliance. Indexing averaged approximately 25,000 reports per hour. Keyword search of a common term like "pneumothorax" yielded the first ten most relevant results of 705,550 total results in 1.36 s. Keyword search of a rare term like "hemangioendothelioma" yielded the first ten most relevant results of 167 total results in 0.23 s; retrieval of all 167 results took 0.26 s. Data mining tools for radiology reports will improve the productivity of academic radiologists in clinical, educational, research, and administrative tasks. By leveraging existing knowledge of Google's interface, radiologists can quickly perform useful searches. PMID:18392657

Erinjeri, Joseph P; Picus, Daniel; Prior, Fred W; Rubin, David A; Koppel, Paul

2009-08-01

371

Creative Engineering Based Education with Autonomous Robots Considering Job Search Support  

NASA Astrophysics Data System (ADS)

The Robotics Course in our Mechanical Systems Engineering Department offers “Robotics Exercise Lessons” as one of its Problem-Solution Based Specialized Subjects. This is intended to motivate students learning and to help them acquire fundamental items and skills on mechanical engineering and improve understanding of Robotics Basic Theory. Our current curriculum was established to accomplish this objective based on two pieces of research in 2005: an evaluation questionnaire on the education of our Mechanical Systems Engineering Department for graduates and a survey on the kind of human resources which companies are seeking and their expectations for our department. This paper reports the academic results and reflections of job search support in recent years as inherited and developed from the previous curriculum.

Takezawa, Satoshi; Nagamatsu, Masao; Takashima, Akihiko; Nakamura, Kaeko; Ohtake, Hideo; Yoshida, Kanou

372

Instruction Guide Shopping Using the Product Keyword Search  

E-print Network

and add them to your cart. The Product Search is a very powerful search engine. Start with by entering in the flyout menu. 3. To start searching for an item, enter the item in the search field. Include specific search terms, such as "latex-free gloves" instead of just "gloves". The system is flexible with search

Pilyugin, Sergei S.

373

Instruction Guide Shopping Using the Product Keyword Search  

E-print Network

powerful search engine. Start with by entering an item into the search field and follow the steps outlined the Home/Shop tab at the top to start your search 3. To start searching for an item, enter the item in the search field ­ include specific search terms, such as "latex-free gloves" instead of just "gloves

Sheremet, Alexandru

374

Department of Engineering Science and Mechanics Spring 2013 Solar Powered Well Pump  

E-print Network

PENNSTATE Department of Engineering Science and Mechanics Spring 2013 Solar Powered Well Pump systems and steam engines were not viable options the team decided that a solar powered heat engine and achieving the power and flow specifications within the team's budget. Objectives The team set 3 tiers

Demirel, Melik C.

375

14 CFR 33.8 - Selection of engine power and thrust ratings.  

...2014-01-01 false Selection of engine power and thrust ratings. 33.8 Section 33.8 Aeronautics... § 33.8 Selection of engine power and thrust ratings. (a) Requested engine power and thrust ratings must be selected by the...

2014-01-01

376

14 CFR 33.8 - Selection of engine power and thrust ratings.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Selection of engine power and thrust ratings. 33.8 Section 33.8 Aeronautics... § 33.8 Selection of engine power and thrust ratings. (a) Requested engine power and thrust ratings must be selected by the...

2013-01-01

377

14 CFR 33.8 - Selection of engine power and thrust ratings.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Selection of engine power and thrust ratings. 33.8 Section 33.8 Aeronautics... § 33.8 Selection of engine power and thrust ratings. (a) Requested engine power and thrust ratings must be selected by the...

2010-01-01

378

14 CFR 33.8 - Selection of engine power and thrust ratings.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 false Selection of engine power and thrust ratings. 33.8 Section 33.8 Aeronautics... § 33.8 Selection of engine power and thrust ratings. (a) Requested engine power and thrust ratings must be selected by the...

2011-01-01

379

14 CFR 33.8 - Selection of engine power and thrust ratings.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Selection of engine power and thrust ratings. 33.8 Section 33.8 Aeronautics... § 33.8 Selection of engine power and thrust ratings. (a) Requested engine power and thrust ratings must be selected by the...

2012-01-01

380

14 CFR 135.385 - Large transport category airplanes: Turbine engine powered: Landing limitations: Destination...  

Code of Federal Regulations, 2011 CFR

...No person operating a turbine engine powered large...no person operating a turbine engine powered large...destination airport and the wind conditions expected...operator may take off a turbine engine powered large...destination airport and the wind conditions...

2011-01-01

381

14 CFR 135.385 - Large transport category airplanes: Turbine engine powered: Landing limitations: Destination...  

Code of Federal Regulations, 2013 CFR

...No person operating a turbine engine powered large...no person operating a turbine engine powered large...destination airport and the wind conditions expected...operator may take off a turbine engine powered large...destination airport and the wind conditions...

2013-01-01

382

14 CFR 121.189 - Airplanes: Turbine engine powered: Takeoff limitations.  

...b) No person operating a turbine engine powered airplane...c) No person operating a turbine engine powered airplane certificated...d) No person operating a turbine engine powered airplane may...the ambient temperature and wind component at the time...

2014-01-01

383

14 CFR 135.379 - Large transport category airplanes: Turbine engine powered: Takeoff limitations.  

Code of Federal Regulations, 2011 CFR

...b) No person operating a turbine engine powered large transport...c) No person operating a turbine engine powered large transport...d) No person operating a turbine engine powered large transport...the ambient temperature and wind component at the time...

2011-01-01

384

14 CFR 135.385 - Large transport category airplanes: Turbine engine powered: Landing limitations: Destination...  

Code of Federal Regulations, 2012 CFR

...No person operating a turbine engine powered large...no person operating a turbine engine powered large...destination airport and the wind conditions expected...operator may take off a turbine engine powered large...destination airport and the wind conditions...

2012-01-01

385

14 CFR 135.379 - Large transport category airplanes: Turbine engine powered: Takeoff limitations.  

...b) No person operating a turbine engine powered large transport...c) No person operating a turbine engine powered large transport...d) No person operating a turbine engine powered large transport...the ambient temperature and wind component at the time...

2014-01-01

386

14 CFR 121.189 - Airplanes: Turbine engine powered: Takeoff limitations.  

Code of Federal Regulations, 2013 CFR

...b) No person operating a turbine engine powered airplane...c) No person operating a turbine engine powered airplane certificated...d) No person operating a turbine engine powered airplane may...the ambient temperature and wind component at the time...

2013-01-01

387

14 CFR 135.379 - Large transport category airplanes: Turbine engine powered: Takeoff limitations.  

Code of Federal Regulations, 2010 CFR

...b) No person operating a turbine engine powered large transport...c) No person operating a turbine engine powered large transport...d) No person operating a turbine engine powered large transport...the ambient temperature and wind component at the time...

2010-01-01

388

14 CFR 121.189 - Airplanes: Turbine engine powered: Takeoff limitations.  

Code of Federal Regulations, 2011 CFR

...b) No person operating a turbine engine powered airplane...c) No person operating a turbine engine powered airplane certificated...d) No person operating a turbine engine powered airplane may...the ambient temperature and wind component at the time...

2011-01-01

389

14 CFR 121.189 - Airplanes: Turbine engine powered: Takeoff limitations.  

Code of Federal Regulations, 2012 CFR

...b) No person operating a turbine engine powered airplane...c) No person operating a turbine engine powered airplane certificated...d) No person operating a turbine engine powered airplane may...the ambient temperature and wind component at the time...

2012-01-01

390

14 CFR 135.385 - Large transport category airplanes: Turbine engine powered: Landing limitations: Destination...  

Code of Federal Regulations, 2010 CFR

...No person operating a turbine engine powered large...no person operating a turbine engine powered large...destination airport and the wind conditions expected...operator may take off a turbine engine powered large...destination airport and the wind conditions...

2010-01-01

391

14 CFR 121.189 - Airplanes: Turbine engine powered: Takeoff limitations.  

Code of Federal Regulations, 2010 CFR

...b) No person operating a turbine engine powered airplane...c) No person operating a turbine engine powered airplane certificated...d) No person operating a turbine engine powered airplane may...the ambient temperature and wind component at the time...

2010-01-01

392

14 CFR 135.379 - Large transport category airplanes: Turbine engine powered: Takeoff limitations.  

Code of Federal Regulations, 2012 CFR

...b) No person operating a turbine engine powered large transport...c) No person operating a turbine engine powered large transport...d) No person operating a turbine engine powered large transport...the ambient temperature and wind component at the time...

2012-01-01

393

14 CFR 135.379 - Large transport category airplanes: Turbine engine powered: Takeoff limitations.  

Code of Federal Regulations, 2013 CFR

...b) No person operating a turbine engine powered large transport...c) No person operating a turbine engine powered large transport...d) No person operating a turbine engine powered large transport...the ambient temperature and wind component at the time...

2013-01-01

394

14 CFR 121.333 - Supplemental oxygen for emergency descent and for first aid; turbine engine powered airplanes...  

Code of Federal Regulations, 2012 CFR

...for first aid; turbine engine powered airplanes with pressurized cabins. 121.333...for first aid; turbine engine powered airplanes with pressurized cabins. (a) General...When operating a turbine engine powered airplane with a pressurized cabin, the...

2012-01-01

395

14 CFR 121.333 - Supplemental oxygen for emergency descent and for first aid; turbine engine powered airplanes...  

Code of Federal Regulations, 2013 CFR

...for first aid; turbine engine powered airplanes with pressurized cabins. 121.333...for first aid; turbine engine powered airplanes with pressurized cabins. (a) General...When operating a turbine engine powered airplane with a pressurized cabin, the...

2013-01-01

396

Nuclear Power Engineering Education Program, University of Illinois  

SciTech Connect

The DOE/CECo Nuclear Power Engineering Education Program at the University of Illinois in its first year has significantly impacted the quality of the power education which our students receive. It has contributed to: the recently completed upgrade of the console of our Advanced TRIGA reactor which increases the reactor's utility for training, the procurement of new equipment to upgrade and refurbish several of the undergraduate laboratory set-ups, and the procurement of computational workstations in support of the instructional computing laboratory. In addition, smaller amounts of funds were used for the recruitment and retention of top quality graduate students, the support of faculty to visit other institutions to attract top students into the discipline, and to provide funds for faculty to participate in short courses to improve their skills and background in the power area. These items and activities have helped elevate in the student's perspective the role of nuclear power in the discipline. We feel this is having a favorable impact on student career selection and on ensuring the continued supply of well educated nuclear engineering graduates.

Jones, B.G.

1993-01-01

397

Magnetohydrodynamics (MHD) Engineering Test Facility (ETF) 200 MWe power plant. Conceptual Design Engineering Report (CDER). Volume 4: Supplementary engineering data  

NASA Technical Reports Server (NTRS)

The reference conceptual design of the Magnetohydrodynamic Engineering Test Facility (ETF), a prototype 200 MWe coal-fired electric generating plant designed to demonstrate the commercial feasibility of open cycle MHD is summarized. Main elements of the design are identified and explained, and the rationale behind them is reviewed. Major systems and plant facilities are listed and discussed. Construction cost and schedule estimates, and identification of engineering issues that should be reexamined are also given. The latest (1980-1981) information from the MHD technology program are integrated with the elements of a conventional steam power electric generating plant. Supplementary Engineering Data (Issues, Background, Performance Assurance Plan, Design Details, System Design Descriptions and Related Drawings) is presented.

1981-01-01

398

Knowledge-based personalized search engine for the Web-based Human Musculoskeletal System Resources (HMSR) in biomechanics.  

PubMed

Human musculoskeletal system resources of the human body are valuable for the learning and medical purposes. Internet-based information from conventional search engines such as Google or Yahoo cannot response to the need of useful, accurate, reliable and good-quality human musculoskeletal resources related to medical processes, pathological knowledge and practical expertise. In this present work, an advanced knowledge-based personalized search engine was developed. Our search engine was based on a client-server multi-layer multi-agent architecture and the principle of semantic web services to acquire dynamically accurate and reliable HMSR information by a semantic processing and visualization approach. A security-enhanced mechanism was applied to protect the medical information. A multi-agent crawler was implemented to develop a content-based database of HMSR information. A new semantic-based PageRank score with related mathematical formulas were also defined and implemented. As the results, semantic web service descriptions were presented in OWL, WSDL and OWL-S formats. Operational scenarios with related web-based interfaces for personal computers and mobile devices were presented and analyzed. Functional comparison between our knowledge-based search engine, a conventional search engine and a semantic search engine showed the originality and the robustness of our knowledge-based personalized search engine. In fact, our knowledge-based personalized search engine allows different users such as orthopedic patient and experts or healthcare system managers or medical students to access remotely into useful, accurate, reliable and good-quality HMSR information for their learning and medical purposes. PMID:23149160

Dao, Tien Tuan; Hoang, Tuan Nha; Ta, Xuan Hien; Tho, Marie Christine Ho Ba

2013-02-01

399

Theoretical proof of edge search strategy applied to power plant start-up scheduling  

Microsoft Academic Search

Power plant start-up scheduling is aimed at minimizing the start-up time while limiting maximum turbine rotor stresses. This scheduling problem is highly nonlinear and has a number of local optima. In our previous research, we proposed an efficient search model: genetic algorithms (GAs) with enforcement operation to focus the search along the edge of the feasible space where the optimal

Akimoto Kamiya; Kensuke Kawai; Isao Ono; Shigenobu Kobayashi

2002-01-01

400

Reading News with Maps: The Power of Searching with Spatial Synonyms  

E-print Network

Reading News with Maps: The Power of Searching with Spatial Synonyms Hanan Samet hjs jagan@cs.umd.edu Daniele Panozzo daniele@cs.umd.edu Jon Sperling Jon.Sperling@hud.gov ABSTRACT people to search for information using a map query interface, where the information results from

Samet, Hanan

401

Magnetohydrodynamics (MHD) Engineering Test Facility (ETF) 200 MWe power plant Conceptual Design Engineering Report (CDER)  

NASA Technical Reports Server (NTRS)

The reference conceptual design of the magnetohydrodynamic (MHD) Engineering Test Facility (ETF), a prototype 200 MWe coal-fired electric generating plant designed to demonstrate the commercial feasibility of open cycle MHD, is summarized. Main elements of the design, systems, and plant facilities are illustrated. System design descriptions are included for closed cycle cooling water, industrial gas systems, fuel oil, boiler flue gas, coal management, seed management, slag management, plant industrial waste, fire service water, oxidant supply, MHD power ventilating

1981-01-01

402

In Proceedings of the 32nd International Symposium on Computer Architecture, June, 2005 A Tree Based Router Search Engine Architecture  

E-print Network

Based Router Search Engine Architecture With Single Port Memories Florin Baboescu , Dean M. Tullsen, susinghÂŁ @cs.ucsd.edu grosu@cs.uiuc.edu Abstract Pipelined forwarding engines are used in core routers is the need to provide high packet forwarding rates through the router. This paper presents a novel

Wang, Deli

403

GoEarth - performance and challenges of a semantic search engine for CCS literature  

NASA Astrophysics Data System (ADS)

Increased interests in climate sciences have led to exponentially increasing publication numbers regarding Carbon Capture and Storage (CCS). In order to be able to handle this overload of information, an ontology-based, semantic search system was developed. The used ontology was especially designed for geo-scientific content in CCS-literature. The semantic search engine provides users with an infrastructure that semantically categorizes textual content by facilitating natural language processing for the knowledge domain of CCS. The system works fully automated. So even search without keywords becomes possible and documents can be identified by navigating the ontology which is rendered as a tree on the left hand side of the search results. Furthermore, meta-data analysis provides useful statistical information, e.g. about author networks. Compared to the 1045 AGU index terms and the 3587 GeoRef thesaurus terms, the new CCS ontology (1170 concepts and synonyms) links to 11.0 % and 8.6 % more documents of a geo-scientific text corpus, respectively. Of all test documents, the CCS ontology hits 96.5 % (GeoRef: 88.9 %, AGU index terms: 87.1 %). We will discuss existing challenges like disambiguation of concepts and intelligent text mining.

Gutknecht, B. D.; Alvers, M. R.

2012-04-01

404

Searching for oscillations in the primordial power spectrum  

E-print Network

A small deviation from scale invariance in the form of oscillations in the primordial correlation spectra has been predicted by various cosmological models. In this paper we review a recently developed method to search for these features in the data in a more effective way. By Taylor expanding the small features around the 'background' cosmology, we have shown we are able to improve the search for these features compared to previous analyses. In this short paper we will extend that work by combining this method with a multi nested sampler. We recover our previous findings and are able to do so in 192 CPU hours. We will also briefly discuss the possibility of a long wavelength feature in the data to alleviate some tension between CMB data and the LCDM+r concordance cosmology.

Meerburg, P Daniel; Wandelt, Benjamin D

2014-01-01

405

Research requirements for emergency power to permit hover-one-engine-inoperative helicopter operation  

NASA Technical Reports Server (NTRS)

The research and technology demonstration requirements to achieve emergency-power capability for a civil helicopter are documented. The goal for emergency power is the ability to hover with one engine inoperative, transition to minimum-power forward flight, and continue to a safe landing where emergency power may or may not be required. The best method to obtain emergency power is to augment the basic engine power by increasing the engine's speed and turbine-inlet temperature, combined with water-alcohol injection at the engine inlet. Other methods, including turbine boost power and flywheel energy, offer potential for obtaining emergency power for minimum time durations. Costs and schedules are estimated for a research and development program to bring emergency power through a hardware-demonstration test. Interaction of engine emergency-power capability with other helicopter systems is examined.

Yost, J. H.

1976-01-01

406

UMCP-BG and E collaboration in nuclear power engineering in the framework of DOE-Utility Nuclear Power Engineering Education Matching Grant Program  

Microsoft Academic Search

The DOE-Utility Nuclear Power Engineering Education Matching Grant Program has been established to support the education of students in Nuclear Engineering Programs to maintain a knowledgeable workforce in the United States in order to keep nuclear power as a viable component in a mix of energy sources for the country. The involvement of the utility industry ensures that this grant

Lothar

2000-01-01

407

Characterizing the Time-Perspective of Nations with Search Engine Query Data  

PubMed Central

Vast quantities of data on human behavior are being created by our everyday internet usage. Building upon a recent study by Preis, Moat, Stanley, and Bishop (2012), we used search engine query data to construct measures of the time-perspective of nations, and tested these measures against per-capita gross domestic product (GDP). The results indicate that nations with higher per-capita GDP are more focused on the future and less on the past, and that when these nations do focus on the past, it is more likely to be the distant past. These results demonstrate the viability of using nation-level data to build psychological constructs. PMID:24736725

Noguchi, Takao; Stewart, Neil; Olivola, Christopher Y.; Moat, Helen Susannah; Preis, Tobias

2014-01-01

408

Nitinol Heat Engine power plant system installation and cost optimization  

SciTech Connect

Nitinol Heat Engines (NHE) use a shape memory alloy of nickel and titanium to directly convert the thermal energy in hot water to mechanical power (and, through a generator, to electricity). The authors designed a commercial version of a NHE based on the thermoturbine configuration developed in prototype form under contract to the Department of Energy in 1978-1980. The operation and cost of various forms of NHE have been described previously, but the penalties and costs associated with integrating the complete NHE system into installations supplying the thermal energy have not previously been determined. They found that these costs are most important, as they will often exceed the costs of the NHE proper. However, the total installed costs are quite low and result in very economical power from waste-heat or geothermal hot-water sources.

Cady, E.C.; McNichols, J.L.

1984-08-01

409

What is Focus? Focus is the TU/e Library's new search engine.  

E-print Network

relevant to your subject (figure 1). Figure 1: advanced search: enter search terms as words from search boxes (figure 3). Figure 3: advanced search: enter search terms in specific search boxes #12;If tips If you are looking for publications on a subject: Type your search terms in the search box, e

Franssen, Michael

410

Electrical Engineering Group Digital, analog, power, ASIC, FPGA, and embedded systems design  

E-print Network

Electrical Engineering Group Digital, analog, power, ASIC, FPGA, and embedded systems design The Electrical Engineering (EE) Group at LASP has a broad range of technical expertise in the design, development, motion control systems, and full microcontroller systems. Electrical Engineering Capabilities Power

Mojzsis, Stephen J.

411

14 CFR 91.1037 - Large transport category airplanes: Turbine engine powered; Limitations; Destination and...  

Code of Federal Regulations, 2010 CFR

...person may permit a turbine engine powered...destination airport and the wind conditions expected...considering the probable wind velocity and direction...other person flying a turbine engine powered large...considering the probable wind velocity and direction...alternate airport for a turbine engine...

2010-01-01

412

14 CFR 91.1037 - Large transport category airplanes: Turbine engine powered; Limitations; Destination and...  

Code of Federal Regulations, 2012 CFR

...person may permit a turbine engine powered...destination airport and the wind conditions expected...considering the probable wind velocity and direction...other person flying a turbine engine powered large...considering the probable wind velocity and direction...alternate airport for a turbine engine...

2012-01-01

413

14 CFR 91.1037 - Large transport category airplanes: Turbine engine powered; Limitations; Destination and...  

Code of Federal Regulations, 2013 CFR

...person may permit a turbine engine powered...destination airport and the wind conditions expected...considering the probable wind velocity and direction...other person flying a turbine engine powered large...considering the probable wind velocity and direction...alternate airport for a turbine engine...

2013-01-01

414

14 CFR 91.1037 - Large transport category airplanes: Turbine engine powered; Limitations; Destination and...  

Code of Federal Regulations, 2011 CFR

...person may permit a turbine engine powered...destination airport and the wind conditions expected...considering the probable wind velocity and direction...other person flying a turbine engine powered large...considering the probable wind velocity and direction...alternate airport for a turbine engine...

2011-01-01

415

Power sources for search and rescue 406 MHz beacons  

NASA Technical Reports Server (NTRS)

The results of a study directed at the selection of a commercially available, safe, low cost, light weight and long storage life battery for search and rescue (Sarsat) 406 MHz emergency beacons are presented. In the course of this work, five electrochemical systems (lithium-manganese dioxide, lithium-carbon monofluoride, lithium-silver vanadium oxide, alkaline cells, and cadmium-mercuric oxide) were selected for limited experimental studies to determine their suitability for this application. Two safe, commercially available batteries (lithium-manganese dioxide and lithium-carbon monofluoride) which meet the near term requirements and several alternatives for the long term were identified.

Attia, Alan I.; Perrone, David E.

1987-01-01

416

On the Search for Higher Temperature Superconductors for Power Grid Applications  

E-print Network

Consultant to AMSC, 64 Jackson Rd, Devens MA 01434 USA High temperature superconductors (HTS) such as YBCOOn the Search for Higher Temperature Superconductors for Power Grid Applications A. P. Malozemoff have enabled a breakthrough in superconductor power grid applications. Based on growing commercial

Paris-Sud 11, Université de

417

A Novel Real-Time Searching Method for Power System Splitting Boundary  

Microsoft Academic Search

It is possible to prevent collapse of the whole post-fault power system, which is in unstable condition, by determining the splitting boundary so as to calm down the system oscillation. A fast method of searching for the splitting boundary of power system controlled islanding is presented in this paper, the aim of which is to minimize the load-generation imbalance in

C. G. Wang; B. H. Zhang; Z. G. Hao; J. Shu; P. Li; Z. Q. Bo

2010-01-01

418

Discovery of gigantic molecular nanostructures using a flow reaction array as a search engine  

NASA Astrophysics Data System (ADS)

The discovery of gigantic molecular nanostructures like coordination and polyoxometalate clusters is extremely time-consuming since a vast combinatorial space needs to be searched, and even a systematic and exhaustive exploration of the available synthetic parameters relies on a great deal of serendipity. Here we present a synthetic methodology that combines a flow reaction array and algorithmic control to give a chemical ‘real-space’ search engine leading to the discovery and isolation of a range of new molecular nanoclusters based on [Mo2O2S2]2+-based building blocks with either fourfold (C4) or fivefold (C5) symmetry templates and linkers. This engine leads us to isolate six new nanoscale cluster compounds: 1, {Mo10(C5)}; 2, {Mo14(C4)4(C5)2}; 3, {Mo60(C4)10}; 4, {Mo48(C4)6}; 5, {Mo34(C4)4}; 6, {Mo18(C4)9}; in only 200 automated experiments from a parameter space spanning ~5 million possible combinations.

Zang, Hong-Ying; de La Oliva, Andreu Ruiz; Miras, Haralampos N.; Long, De-Liang; McBurney, Roy T.; Cronin, Leroy

2014-04-01

419

Discovery of gigantic molecular nanostructures using a flow reaction array as a search engine  

PubMed Central

The discovery of gigantic molecular nanostructures like coordination and polyoxometalate clusters is extremely time-consuming since a vast combinatorial space needs to be searched, and even a systematic and exhaustive exploration of the available synthetic parameters relies on a great deal of serendipity. Here we present a synthetic methodology that combines a flow reaction array and algorithmic control to give a chemical ‘real-space’ search engine leading to the discovery and isolation of a range of new molecular nanoclusters based on [Mo2O2S2]2+-based building blocks with either fourfold (C4) or fivefold (C5) symmetry templates and linkers. This engine leads us to isolate six new nanoscale cluster compounds: 1, {Mo10(C5)}; 2, {Mo14(C4)4(C5)2}; 3, {Mo60(C4)10}; 4, {Mo48(C4)6}; 5, {Mo34(C4)4}; 6, {Mo18(C4)9}; in only 200 automated experiments from a parameter space spanning ~5 million possible combinations. PMID:24770632

Zang, Hong-Ying; de la Oliva, Andreu Ruiz; Miras, Haralampos N.; Long, De-Liang; McBurney, Roy T.; Cronin, Leroy

2014-01-01

420

Discovery of gigantic molecular nanostructures using a flow reaction array as a search engine.  

PubMed

The discovery of gigantic molecular nanostructures like coordination and polyoxometalate clusters is extremely time-consuming since a vast combinatorial space needs to be searched, and even a systematic and exhaustive exploration of the available synthetic parameters relies on a great deal of serendipity. Here we present a synthetic methodology that combines a flow reaction array and algorithmic control to give a chemical 'real-space' search engine leading to the discovery and isolation of a range of new molecular nanoclusters based on [Mo(2)O(2)S(2)](2+)-based building blocks with either fourfold (C4) or fivefold (C5) symmetry templates and linkers. This engine leads us to isolate six new nanoscale cluster compounds: 1, {Mo(10)(C5)}; 2, {Mo(14)(C4)4(C5)2}; 3, {Mo(60)(C4)10}; 4, {Mo(48)(C4)6}; 5, {Mo(34)(C4)4}; 6, {Mo(18)(C4)9}; in only 200 automated experiments from a parameter space spanning ~5 million possible combinations. PMID:24770632

Zang, Hong-Ying; de la Oliva, Andreu Ruiz; Miras, Haralampos N; Long, De-Liang; McBurney, Roy T; Cronin, Leroy

2014-01-01

421

Proceedings Ninth International Conference on Human-Computer Interaction, August, 2001 Effect of Web Search Engine Design on User Performance and Preference  

E-print Network

of Web Search Engine Design on User Performance and Preference David N. Aurelioa and Ronald R. Mourantb and Industrial Engineering Northeastern University 360 Huntington Avenue Boston, MA 02115 USA The research objective was to gather empirical data about the effects of a Web search engine's user interface on user

422

U.S. Power and Energy Engineering Workforce Collaborative Press Release  

E-print Network

engineering programs is not sufficient to meet the need. The good news is that enrollments in electric power and engineering programs are increasing. The bad news is that they are not rising fast enough, and interest

423

Design of a High Temperature Small Particle Solar Receiver for Powering a Gas Turbine Engine  

E-print Network

Design of a High Temperature Small Particle Solar Receiver for Powering a Gas Turbine Engine Dr. Fletcher Miller SDSU Department of Mechanical Engineering Abstract Solar thermal power for electricity will describe the design of a high temperature solar receiver capable of driving a gas turbine for power

Ponce, V. Miguel

424

14 CFR 125.377 - Fuel supply: Turbine-engine-powered airplanes other than turbopropeller.  

Code of Federal Regulations, 2010 CFR

...flight or takeoff a turbine-powered airplane...considering the wind and other weather conditions...flight or take off a turbine-engine powered...unless, considering wind and other weather conditions...person may release a turbine-engine-powered...fuel, considering wind and other...

2010-01-01

425

14 CFR 125.377 - Fuel supply: Turbine-engine-powered airplanes other than turbopropeller.  

Code of Federal Regulations, 2013 CFR

...flight or takeoff a turbine-powered airplane...considering the wind and other weather conditions...flight or take off a turbine-engine powered...unless, considering wind and other weather conditions...person may release a turbine-engine-powered...fuel, considering wind and other...

2013-01-01

426

14 CFR 125.377 - Fuel supply: Turbine-engine-powered airplanes other than turbopropeller.  

Code of Federal Regulations, 2012 CFR

...flight or takeoff a turbine-powered airplane...considering the wind and other weather conditions...flight or take off a turbine-engine powered...unless, considering wind and other weather conditions...person may release a turbine-engine-powered...fuel, considering wind and other...

2012-01-01

427

14 CFR 125.377 - Fuel supply: Turbine-engine-powered airplanes other than turbopropeller.  

...flight or takeoff a turbine-powered airplane...considering the wind and other weather conditions...flight or take off a turbine-engine powered...unless, considering wind and other weather conditions...person may release a turbine-engine-powered...fuel, considering wind and other...

2014-01-01

428

14 CFR 125.377 - Fuel supply: Turbine-engine-powered airplanes other than turbopropeller.  

Code of Federal Regulations, 2011 CFR

...flight or takeoff a turbine-powered airplane...considering the wind and other weather conditions...flight or take off a turbine-engine powered...unless, considering wind and other weather conditions...person may release a turbine-engine-powered...fuel, considering wind and other...

2011-01-01

429

Power supply circuit for an ion engine sequentially operated power inverters  

NASA Technical Reports Server (NTRS)

A power supply circuit for an ion engine suitable for a spacecraft has a voltage bus having input line and a return line. The power supply circuit includes a pulse width modulation circuit. A plurality of bridge inverter circuits is coupled to the bus and the pulse width modulation circuit. The pulse width modulation circuit generates operating signals having a variable duty cycle. Each bridge inverter has a primary winding and a secondary winding. Each secondary winding is coupled to a rectifier bridge. Each secondary winding is coupled in series with another of the plurality of rectifier bridges.

Cardwell, Jr., Gilbert I. (Inventor)

2000-01-01

430

High temperature solar photon engines. [heat engines for terrestrial and space-based solar power plants  

NASA Technical Reports Server (NTRS)

High temperature heat engines designed to make maximum use of the thermodynamic potential of concentrated solar radiation are described. Plasmas between 2000 K and 4000 K can be achieved by volumetric absorption of radiation in alkali metal vapors, leading to thermal efficiencies up to 75% for terrestrial solar power plants and up to 50% for space power plants. Two machines capable of expanding hot plasmas using practical technology are discussed. A binary Rankine cycle uses fluid mechanical energy transfer in a device known as the 'Comprex' or 'energy exchanger.' The second machine utilizes magnetohydrodynamics in a Brayton cycle for space applications. Absorption of solar energy and plasma radiation losses are investigated for a solar superheater using potassium vapor.

Hertzberg, A.; Decher, R.; Mattick, A. T.; Lau, C. V.

1978-01-01

431

A Virtual Engineering Framework for Simulating Advanced Power System  

SciTech Connect

In this report is described the work effort performed to provide NETL with VE-Suite based Virtual Engineering software and enhanced equipment models to support NETL's Advanced Process Engineering Co-simulation (APECS) framework for advanced power generation systems. Enhancements to the software framework facilitated an important link between APECS and the virtual engineering capabilities provided by VE-Suite (e.g., equipment and process visualization, information assimilation). Model enhancements focused on improving predictions for the performance of entrained flow coal gasifiers and important auxiliary equipment (e.g., Air Separation Units) used in coal gasification systems. In addition, a Reduced Order Model generation tool and software to provide a coupling between APECS/AspenPlus and the GE GateCycle simulation system were developed. CAPE-Open model interfaces were employed where needed. The improved simulation capability is demonstrated on selected test problems. As part of the project an Advisory Panel was formed to provide guidance on the issues on which to focus the work effort. The Advisory Panel included experts from industry and academics in gasification, CO2 capture issues, process simulation and representatives from technology developers and the electric utility industry. To optimize the benefit to NETL, REI coordinated its efforts with NETL and NETL funded projects at Iowa State University, Carnegie Mellon University and ANSYS/Fluent, Inc. The improved simulation capabilities incorporated into APECS will enable researchers and engineers to better understand the interactions of different equipment components, identify weaknesses and processes needing improvement and thereby allow more efficient, less expensive plants to be developed and brought on-line faster and in a more cost-effective manner. These enhancements to APECS represent an important step toward having a fully integrated environment for performing plant simulation and engineering. Furthermore, with little effort the modeling capabilities described in this report can be extended to support other DOE programs, such as ultra super critical boiler development, oxy-combustion boiler development or modifications to existing plants to include CO2 capture and sequestration.

Mike Bockelie; Dave Swensen; Martin Denison; Stanislav Borodai

2008-06-18

432

Solar-powered rocket engine optimization for high specific impulse  

NASA Astrophysics Data System (ADS)

Hercules Aerospace is currently developing a solar-powered rocket engine (SPRE) design optimized for high specific impulse (Isp). The SPRE features a low loss geometry in its light-gathering cavity, which includes an integral secondary concentrator. The simple one-piece heat exchanger is made from refractory metal and/or ceramic open-celled foam. The foam's high surface-area-to-volume ratio will efficiently transfer the thermal energy to the hydrogen propellant. The single-pass flow of propellant through the heat exchanger further boosts thermal efficiency by regeneratively cooling surfaces near the entrance of the optical cavity. These surfaces would otherwise reradiate a significant portion of the captured solar energy back out of the solar entrance. Such design elements promote a high overall thermal efficiency and hence, a high operating Isp

Pande, J. Bradley

1993-11-01

433

Thermal energy storage for the Stirling engine powered automobile  

NASA Technical Reports Server (NTRS)

A thermal energy storage (TES) system developed for use with the Stirling engine as an automotive power system has gravimetric and volumetric storage densities which are competitive with electric battery storage systems, meets all operational requirements for a practical vehicle, and can be packaged in compact sized automobiles with minimum impact on passenger and freight volume. The TES/Stirling system is the only storage approach for direct use of combustion heat from fuel sources not suitable for direct transport and use on the vehicle. The particular concept described is also useful for a dual mode TES/liquid fuel system in which the TES (recharged from an external energy source) is used for short duration trips (approximately 10 miles or less) and liquid fuel carried on board the vehicle used for long duration trips. The dual mode approach offers the potential of 50 percent savings in the consumption of premium liquid fuels for automotive propulsion in the United States.

Morgan, D. T. (editor)

1979-01-01

434

14 CFR 135.383 - Large transport category airplanes: Turbine engine powered: En route limitations: Two engines...  

Code of Federal Regulations, 2011 CFR

...2011-01-01 false Large transport category airplanes: Turbine...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR...Limitations § 135.383 Large transport category airplanes: Turbine...turbine engine powered large transport category airplane along...

2011-01-01

435

14 CFR 135.383 - Large transport category airplanes: Turbine engine powered: En route limitations: Two engines...  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Large transport category airplanes: Turbine...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR...Limitations § 135.383 Large transport category airplanes: Turbine...turbine engine powered large transport category airplane along...

2010-01-01

436

14 CFR 135.383 - Large transport category airplanes: Turbine engine powered: En route limitations: Two engines...  

...2014-01-01 false Large transport category airplanes: Turbine...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR...Limitations § 135.383 Large transport category airplanes: Turbine...turbine engine powered large transport category airplane along...

2014-01-01

437

14 CFR 135.383 - Large transport category airplanes: Turbine engine powered: En route limitations: Two engines...  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Large transport category airplanes: Turbine...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR...Limitations § 135.383 Large transport category airplanes: Turbine...turbine engine powered large transport category airplane along...

2013-01-01

438

14 CFR 135.383 - Large transport category airplanes: Turbine engine powered: En route limitations: Two engines...  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Large transport category airplanes: Turbine...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR...Limitations § 135.383 Large transport category airplanes: Turbine...turbine engine powered large transport category airplane along...

2012-01-01

439

4/6/2014 Digital Manufacturing Report: Engineers Develop Microwindmills to Power Electronics http://www.digitalmanufacturingreport.com/dmr/2014-01-17/engineers_develop_microwindmills_to_power_electronics.html?layout=print 1/1  

E-print Network

4/6/2014 Digital Manufacturing Report: Engineers Develop Microwindmills to Power Electronics http://www.digitalmanufacturingreport.com/dmr/2014-01-17/engineers_develop_microwindmills_to_power_electronics.html?layout=print 1/1 Engineers Develop Microwindmills to Power Electronics January 17, 2014 | Tom Ayres Engineers at the University

Chiao, Jung-Chih

440

Development of a One-Stop Data Search and Discovery Engine using Ontologies for Semantic Mappings (HydroSeek)  

NASA Astrophysics Data System (ADS)

Search engines have changed the way we see the Internet. The ability to find the information by just typing in keywords was a big contribution to the overall web experience. While the conventional search engine methodology worked well for textual documents, locating scientific data remains a problem since they are stored in databases not readily accessible by search engine bots. Considering different temporal, spatial and thematic coverage of different databases, especially for interdisciplinary research it is typically necessary to work with multiple data sources. These sources can be federal agencies which generally offer national coverage or regional sources which cover a smaller area with higher detail. However for a given geographic area of interest there often exists more than one database with relevant data. Thus being able to query multiple databases simultaneously is a desirable feature that would be tremendously useful for scientists. Development of such a search engine requires dealing with various heterogeneity issues. In scientific databases, systems often impose controlled vocabularies which ensure that they are generally homogeneous within themselves but are semantically heterogeneous when moving between different databases. This defines the boundaries of possible semantic related problems making it easier to solve than with the conventional search engines that deal with free text. We have developed a search engine that enables querying multiple data sources simultaneously and returns data in a standardized output despite the aforementioned heterogeneity issues between the underlying systems. This application relies mainly on metadata catalogs or indexing databases, ontologies and webservices with virtual globe and AJAX technologies for the graphical user interface. Users can trigger a search of dozens of different parameters over hundreds of thousands of stations from multiple agencies by providing a keyword, a spatial extent, i.e. a bounding box, and a temporal bracket. As part of this development we have also added an environment that allows users to do some of the semantic tagging, i.e. the linkage of a variable name (which can be anything they desire) to defined concepts in the ontology structure which in turn provides the backbone of the search engine.

Piasecki, M.; Beran, B.

2007-12-01

441

Technische Universitt Darmstadt Knowledge Engineering Group  

E-print Network

Technische Universität Darmstadt Knowledge Engineering Group Hochschulstrasse 10, D-64289 Darmstadt@informatik.tu-darmstadt.de Knowledge Engineering Group Department of Computer Science TU Darmstadt, Germany Abstract Most commonly used accuracy or theory size by using more powerful search strategies like beam search or exhaustive search

FĂĽrnkranz, Johannes

442

Differential Evolution Based Intelligent System State Search Method for Composite Power System Reliability Evaluation  

NASA Astrophysics Data System (ADS)

This paper presents a new approach for evaluating the reliability indices of a composite power system that adopts binary differential evolution (BDE) algorithm in the search mechanism to select the system states. These states also called dominant states, have large state probability and higher loss of load curtailment necessary to maintain real power balance. A chromosome of a BDE algorithm represents the system state. BDE is not applied for its traditional application of optimizing a non-linear objective function, but used as tool for exploring more number of dominant states by producing new chromosomes, mutant vectors and trail vectors based on the fitness function. The searched system states are used to evaluate annualized system and load point reliability indices. The proposed search methodology is applied to RBTS and IEEE-RTS test systems and results are compared with other approaches. This approach evaluates the indices similar to existing methods while analyzing less number of system states.

Bakkiyaraj, Ashok; Kumarappan, N.

2014-07-01

443

Search and track power charge docking station based on sound source for autonomous mobile robot applications  

Microsoft Academic Search

The objectives of this paper is to develop a system for an autonomous mobile robot for searching and tracking sound source based target. The target can be a power charge docking station. Finding objects or events by following a sound source direction is an intuitive response for human and animal when they cannot see the target. However, there are relative

Ren C. Luo; Chien H. Huang; Chun Y. Huang

2010-01-01

444

Self-evaluation in Advanced Power Searching and Mapping with Google MOOCs  

E-print Network

Self-evaluation in Advanced Power Searching and Mapping with Google MOOCs Julia Wilkowski Google 1600 Amphitheatre Parkway Mountain View, CA 94304 Wilkowski@Google.com Daniel M. Russell Google 1600 Amphitheatre Parkway Mountain View, CA 94304 DRussell@Google.com Amit Deutsch Google 1600 Amphitheatre Parkway

Tomkins, Andrew

445

Jupiter's Tropospheric Thermal Emission II: Power Spectrum Analysis and Wave Search  

E-print Network

Jupiter's Tropospheric Thermal Emission II: Power Spectrum Analysis and Wave Search Joseph, Jupiter jovian planets, Atmosphere clouds, Jupiter jupiter, atmosphere, Dynamics infrared observations, Jupiter Revision 3.2: 16:31 19 June 1996 1 Harrington et al. #12; Proposed running heads: Left: Harrington

Harrington, Joe

446

ENGINEERING DESIGN AND ANALYSIS OF THE ARIES-CS POWER PLANT  

E-print Network

each field period while allowing for penetrations required for main- tenance, plasma control, coolantENGINEERING DESIGN AND ANALYSIS OF THE ARIES-CS POWER PLANT A. R. RAFFRAY,a * L. EL-GUEBALY,b S an integrated study of a compact stellarator power plant, involving physics and engineering design optimization

447

Recommendations to the NRC on human engineering guidelines for nuclear power plant maintainability  

Microsoft Academic Search

This document contains human engineering guidelines which can enhance the maintainability of nuclear power plants. The guidelines have been derived from general human engineering design principles, criteria, and data. The guidelines may be applied to existing plants as well as to plants under construction. They apply to nuclear power plant systems, equipment and facilities, as well as to maintenance tools

R. V. Badalamente; B. A. Fecht; D. E. Blahnik; J. D. Eklund; C. S. Hartley

1986-01-01

448

"Materials for Energy and Power Engineering" (Werkstoffe fr die Energietechnik) ; Ilmenau  

E-print Network

"Materials for Energy and Power Engineering" (Werkstoffe fĂĽr die Energietechnik) ; Ilmenau represents the proceedings of the workshop "Materials for Energy and Power Engineering" held in September 2012 during the IWK 2012 in Ilmenau. Here, the latest developments related to materials in energy

Knobloch,JĂĽrgen

449

Work in progress - what is PowerPoint? educating engineering students in its use and abuse  

Microsoft Academic Search

PowerPoint software has become the standard presentation tool used in professional engineering workplaces and in engineering classrooms. The current pervasiveness of the software has led us to consider whether we should view PowerPoint as merely a medium for communication, a tool, or if we should examine the uses practitioners make of the software for signs that they have assigned it

Richard House; Anneliese Watt; Julia Williams

2005-01-01

450

Evaluation of power control methods for free-piston Stirling engine driven heat pumps  

Microsoft Academic Search

A free-piston Stirling engine (FPSE) driven heat pump will tend either to stall or to overstroke if the FPSE power output is not controlled or matched to the compressor power requirement. Ambient temperature variations can create large changes in the power required to compress the refrigerant. An analysis was performed to investigate power control options for FPSE heat pumps. Six

F. P. Griffin; N. Domingo; F. C. Chen

1987-01-01

451

Search.com  

NSDL National Science Digital Library

Search.com allows you to search over 800 engines, listed by subject areas from arts to Web. Each subject area presents a list of search forms, along with very brief annotations and "search tips." While there is no way to do a multiple engine search with a single command, the organization of Search.com allows the user to determine which engines might be appropriate. Search.com also allows you to set up a "personal" search page, based on subjects and searching engines chosen. Searching help is also provided, as is a "meta-search" to find useful engines before starting a search.

1996-01-01

452

Analysis of Apex Seal Friction Power Loss in Rotary Engines  

NASA Technical Reports Server (NTRS)

An analysis of the frictional losses from the apex seals in a rotary engine was developed. The modeling was initiated with a kinematic analysis of the rotary engine. Next a modern internal combustion engine analysis code was altered for use in a rotary engine to allow the calculation of the internal combustion pressure as a function of rotor rotation. Finally the forces from the spring, inertial, and combustion pressure on the seal were combined to provide the frictional horsepower assessment.

Handschuh, Robert F.; Owen, A. Karl

2010-01-01

453

High-power baseline and motoring test results for the GPU-3 Stirling engine  

NASA Technical Reports Server (NTRS)

Test results are given for the full power range of the engine with both helium and hydrogen working fluids. Comparisons are made to previous testing using an alternator and resistance load bank to absorb the engine output. Indicated power results are presented as determined by several methods. Motoring tests were run to aid in determining engine mechanical losses. Comparisons are made between the results of motoring and energy-balance methods for finding mechanical losses.

Thieme, L. G.

1981-01-01

454

Expansion machine for a low power-output steam Rankine-cycle engine  

Microsoft Academic Search

The performance of the expansion device in a Rankine-cycle engine is one of the major parameters dictating the engine's overall energy-conversion efficiency. In this paper, the screening process undertaken to choose the most suitable expansion machine for a steam Rankine-cycle engine, operating principally as a [`]mini' combined heat-and-power unit, is described. In the low power-output range (i.e. 5-20 kW) envisaged

O. Badr; S. Naik; P. W. OCallaghan; S. D. Probert

1991-01-01

455

Carbon Monoxide Hazards from Small Gasoline Powered Engines  

MedlinePLUS

... where he had been working with an 8-horse-power, gasoline-powered pump. Doors adjacent to the ... treated for CO poisoning after using two 8 horse-power, gasoline-powered, pressure washers in a poorly ...

456

Chemical Compound Navigator: A Web-Based Chem-BLAST, Chemical Taxonomy-Based Search Engine for Browsing  

E-print Network

Chemical Compound Navigator: A Web-Based Chem-BLAST, Chemical Taxonomy-Based Search Engine, query, and analyze chemical compounds has been developed and is illustrated by using the inhibitor data on HIV protease-inhibitor complexes. In this method, all chemical compounds are annotated in terms

457

Project-Based Learning: A Search and Rescue UAV - Perceptions of an Undergraduate Engineering Design Team: A Preliminary Study  

Microsoft Academic Search

The aim of this paper is to provide a voice for students about project-based learning in an undergraduate education setting. During their final year of a four year undergraduate engineering degree a group of 8 students successfully designed, developed and manufactured an autonomous search and rescue Unmanned Aerial Vehicle (UAV), as an integrated project-based learning part of the curriculum. The

Benjamin J. Chartier; Brad A. Gibson

458

A Study on Microblog and Search Engine User Behaviors: How Twitter Trending Topics Help Predict Google Hot Queries  

E-print Network

A Study on Microblog and Search Engine User Behaviors: How Twitter Trending Topics Help Predict Ca' Foscari Venezia, Italy Email: gabriele.tolomei@unive.it ABSTRACT Once every five minutes, Twitter that social trends fired by Twitter may help explain and predict web trends derived from Google. Indeed, we

Orlando, Salvatore

459

Characterization of Search Engine Caches Frank McCown, Michael L. Nelson, Old Dominion University; Norfolk, Virginia/USA  

E-print Network

Characterization of Search Engine Caches Frank McCown, Michael L. Nelson, Old Dominion University). At Old Dominion University, we are engaged in a number of research projects that utilize SE caches relies on SE caches, we have un- dertaken what we believe to be the first quantitative analysis of SE

Nelson, Michael L.

460

What We've Learned From Doing Usability Testing on OpenURL Resolvers and Federated Search Engines  

ERIC Educational Resources Information Center

OpenURL resolvers and federated search engines are important new services in the library field. For some librarians, these services may seem "old hat" by now, but for the majority these services are still in the early stages of implementation or planning. In many cases, these two services are offered as a seamlessly integrated whole. That is, it…

Cervone, Frank

2005-01-01

461

A Comprehensive and Systematic Model of User Evaluation of Web Search Engines: II. An Evaluation by Undergraduates.  

ERIC Educational Resources Information Center

Presents an application of a model of user evaluation of four major Web search engines (Alta Vista, Excite, Infoseek, and Lycos) by undergraduates. Evaluation was based on 16 performance measures representing five evaluation criteria-relevance, efficiency, utility, user satisfaction, and connectivity. Content analysis of verbal data identified a…

Su, Louise T.

2003-01-01

462

Power Hardware-in-the-loop Simulation of a Gas Engine Cogeneration System for Developing a Power Converter System  

NASA Astrophysics Data System (ADS)

This research focuses on the development scheme of a power converter in a gas engine cogeneration system using a power hardware-in-the-loop simulation. A matrix converter is adopted to substitute a conventional ac/dc/ac converter and transfers three phase electricity to single phase electricity directly. To inevstigate the interaction between gas engine-generator unit and the proposed matrix converter, a power hardware-in-the-loop simulation is carried out, in which a piece of real matrix converter is installed in the simulation loop and interfaces with the numerical model of gas engine-generator unit. Numerical models of gas engine and generator are presented and verified by experiment. The configuration of the power hardware-in-the-loop simulation is described and results are also presented, through which the practical application of matrix converter is well demonstrated.

Hong, Miao; Horie, Satoshi; Miura, Yushi; Ise, Tosifumi; Sato, Yuki; Momose, Toshinari; Dufour, Christian

463

The Impact of Search Engine Selection and Sorting Criteria on Vaccination Beliefs and Attitudes: Two Experiments Manipulating Google Output  

PubMed Central

Background During the past 2 decades, the Internet has evolved to become a necessity in our daily lives. The selection and sorting algorithms of search engines exert tremendous influence over the global spread of information and other communication processes. Objective This study is concerned with demonstrating the influence of selection and sorting/ranking criteria operating in search engines on users’ knowledge, beliefs, and attitudes of websites about vaccination. In particular, it is to compare the effects of search engines that deliver websites emphasizing on the pro side of vaccination with those focusing on the con side and with normal Google as a control group. Method We conducted 2 online experiments using manipulated search engines. A pilot study was to verify the existence of dangerous health literacy in connection with searching and using health information on the Internet by exploring the effect of 2 manipulated search engines that yielded either pro or con vaccination sites only, with a group receiving normal Google as control. A pre-post test design was used; participants were American marketing students enrolled in a study-abroad program in Lugano, Switzerland. The second experiment manipulated the search engine by applying different ratios of con versus pro vaccination webpages displayed in the search results. Participants were recruited from Amazon’s Mechanical Turk platform where it was published as a human intelligence task (HIT). Results Both experiments showed knowledge highest in the group offered only pro vaccination sites (Z=–2.088, P=.03; Kruskal-Wallis H test [H5]=11.30, P=.04). They acknowledged the importance/benefits (Z=–2.326, P=.02; H5=11.34, P=.04) and effectiveness (Z=–2.230, P=.03) of vaccination more, whereas groups offered antivaccination sites only showed increased concern about effects (Z=–2.582, P=.01; H5=16.88, P=.005) and harmful health outcomes (Z=–2.200, P=.02) of vaccination. Normal Google users perceived information quality to be positive despite a small effect on knowledge and a negative effect on their beliefs and attitudes toward vaccination and willingness to recommend the information (?2 5=14.1, P=.01). More exposure to antivaccination websites lowered participants’ knowledge (J=4783.5, z=?2.142, P=.03) increased their fear of side effects (J=6496, z=2.724, P=.006), and lowered their acknowledgment of benefits (J=4805, z=–2.067, P=.03). Conclusion The selection and sorting/ranking criteria of search engines play a vital role in online health information seeking. Search engines delivering websites containing credible and evidence-based medical information impact positively Internet users seeking health information. Whereas sites retrieved by biased search engines create some opinion change in users. These effects are apparently independent of users’ site credibility and evaluation judgments. Users are affected beneficially or detrimentally but are unaware, suggesting they are not consciously perceptive of indicators that steer them toward the credible sources or away from the dangerous ones. In this sense, the online health information seeker is flying blind. PMID:24694866

Schulz, Peter Johannes; Nakamoto, Kent

2014-01-01

464

Unbounded Binary Search for a Fast and Accurate Maximum Power Point Tracking  

NASA Astrophysics Data System (ADS)

This paper presents a technique for maximum power point tracking (MPPT) of a concentrating photovoltaic system using cell level power optimization. Perturb and observe (P&O) has been a standard for an MPPT, but it introduces a tradeoff between the tacking speed and the accuracy of the maximum power delivered. The P&O algorithm is not suitable for a rapid environmental condition change by partial shading and self-shading due to its tracking time being linear to the length of the voltage range. Some of researches have been worked on fast tracking but they come with internal ad hoc parameters. In this paper, by using the proposed unbounded binary search algorithm for the MPPT, tracking time becomes a logarithmic function of the voltage search range without ad hoc parameters.

Kim, Yong Sin; Winston, Roland

2011-12-01

465

Witnessing power: John Elder and the making of the marine compound engine, 1850-1858.  

PubMed

Shipowners' seemingly slow adoption of marine compound engines is often attributed to not appreciating the new technology's superior economy. This article argues that this slow adoption needs to be understood alongside the challenges faced by engine builders in persuading skeptical shipowners and practical engineers that their designs were trustworthy. It explores the rich cultural contexts within which Glasgow master engineer John Elder and his associates rendered their marine compound engines credible for Liverpool's Pacific Steam Navigation Company, the first line to deploy the new engine. Elder operated within a culture whose hallmarks were useful work, economy, and the power of direct witnessing. The article also explores the role of William McNaught, an independent consultant with a strong track record as both a practical engineer and the inventor of a steam-engine indicator. His indicator, deployed to evaluate the performance of Elder's compound engines, stood at the center of the controversy over their economy. PMID:24988795

Smith, Crosbie

2014-01-01

466

A New Thermodynamic Power Conversion Cycle and Heat Engine for Space Power Applications  

NASA Astrophysics Data System (ADS)

A new heat engine concept has been invented that operates on a new two-phase thermodynamic power conversion cycle. This device exploits the space flight proven technique of using a porous capillary structure to separate liquid from vapor through heat addition. This new thermodynamic cycle, the Baker cycle, is different from the existing Rankine because liquid and vapor are at different pressures and are separated during the phase change heat addition process as opposed to the Rankine cycle where liquid and vapor are at the same pressure and mixed during phase change heat addition. This new cycle also differs from Rankine because the heat addition process occurs at varying pressures and temperatures, where as in a Rankine cycle heat addition occurs at constant pressure. It is advantageous to apply this new cycle to space applications because management of the two-phase working fluid in micro gravity can be accomplished as never before using space flight proven Loop Heat Pipe and Capillary Pumped Loop technology. This new power system contains many components with significant flight heritage. Thermodynamic performance calculations are presented for several design cases. The new power cycle and system is inherently more efficient than single-phase systems because minimal compression power is required. One case shows 31.1% overall efficiency with a maximum working fluid temperature of 637.4 K. Since the heat addition process occurs at varying temperatures, waste heat from the spacecraft could be tapped and recovered to supply a large portion of the input energy. For the example cases discussed, between 63.1 to 84.4% of the total input energy could be waste heat. This new system could be used in conjunction with phase change thermal energy storage to supplement power production replacing batteries for solar low-earth-orbit applications. It could also be used as a power converter with a radioisotope heat source yielding efficiencies over 30% while requiring a maximum temperature well below that of single-phase dynamic converters. Because this new power system is capable of operating at high efficiency at relatively low temperatures it could also be used as the bottoming cycle of a space based cogeneration power system with a single-phase or static power converter being the top cycle.

Baker, Karl W.

2004-02-01

467

Single Phase Passive Rectification Versus Active Rectification Applied to High Power Stirling Engines  

NASA Technical Reports Server (NTRS)

Stirling engine converters are being considered as potential candidates for high power energy conversion systems required by future NASA explorations missions. These types of engines typically contain two major moving parts, the displacer and the piston, in which a linear alternator is attached to the piston to produce a single phase sinusoidal waveform at a specific electric frequency. Since all Stirling engines perform at low electrical frequencies (less or equal to 100 Hz), space explorations missions that will employ these engines will be required to use DC power management and distribution (PMAD) system instead of an AC PMAD system to save on space and weight. Therefore, to supply such DC power an AC to DC converter is connected to the Stirling engine. There are two types of AC to DC converters that can be employed, a passive full bridge diode rectifier and an active switching full bridge rectifier. Due to the inherent line inductance of the Stirling Engine-Linear Alternator (SE-LA), their sinusoidal voltage and current will be phase shifted producing a power factor below 1. In order to keep power the factor close to unity, both AC to DC converters topologies will implement power factor correction. This paper discusses these power factor correction methods as well as their impact on overall mass for exploration applications. Simulation results on both AC to DC converters topologies with power factor correction as a function of output power and SE-LA line inductance impedance are presented and compared.

Santiago, Walter; Birchenough, Arthur G.

2006-01-01

468

Comparison of advanced engines for parabolic dish solar thermal power plants  

NASA Technical Reports Server (NTRS)

A paraboloidal dish solar thermal power plant produces electrical energy by a two-step conversion process. The collector subsystem is composed of a two-axis tracking paraboloidal concentrator and a cavity receiver. The concentrator focuses intercepted sunlight (direct, normal insolation) into a cavity receiver whose aperture encircles the focal point of the concentrator. At the internal wall of the receiver the electromagnetic radiation is converted to thermal energy. A heat engine/generator assembly then converts the thermal energy captured by the receiver to electricity. Developmental activity has been concentrated on small power modules which employ 11- to 12-meter diameter dishes to generate nominal power levels of approximately 20 kWe. A comparison of advanced heat engines for the dish power module is presented in terms of the performance potential of each engine with its requirements for advanced technology development. Three advanced engine possibilities are the Brayton (gas turbine), Brayton/Rankine combined cycle, and Stirling engines.

Fujita, T.; Bowyer, J. M.; Gajanana, B. C.

1980-01-01

469

Job Search Links Click on an engineering discipline or a specific topic below to identify related job search links.  

E-print Network

· Professional Associations · Research · Salary · Third-party (employment) Recruiting · Training://www.galacticsurf.net/spacejobsGB.htm) Space job search page · Meteorology Jobs in Climate Atmospheric Sciences Meteorology... (http, meteorology. · OceanCareers.com (http://www.oceancareers.com/2.0/jobs_and_internships.php) · Space Science

Daly, Samantha

470

Radioisotope power system based on derivative of existing Stirling engine  

SciTech Connect

In a recent paper, the authors presented the results of a system design study of a 75-watt(c) RSG (Radioisotope Stirling Generator) for possible application to the Pluto Fast Flyby mission. That study was based on a Stirling engine design generated by MTI (Mechanical Technology, Inc.). The MTI design was a derivative of a much larger (13 kwe) engine that they had developed and tested for NASA`s LERC. Clearly, such a derivative would be a major extrapolation (downsizing) from what has actually been built and tested. To avoid that, the present paper describes a design for a 75-watt RSG system based on derivatives of a small (11-watt) engine and linear alternator system that has been under development by STC (Stirling Technology Company) for over three years and that has operated successfully for over 15,000 hours as of March 1995. Thus, the STC engines would require much less extrapolation from proven designs. The design employs a heat source consisting of two standard General Purpose Heat Source (GPHS) modules, coupled to four Stirling engines with linear alternators, any three of which could deliver the desired 75-watt(e) output if the fourth should fail. The four engines are coupled to four common radiators with redundant heatpipes for rejecting the engines` waste heat to space. The above engine and radiator redundancies promote system reliability. The paper describes detailed analyses to determine the effect of radiator geometry on system mass and performance, before and after an engine or heatpipe failure.

Schock, A.; Or, C.T.; Kumar, V. [Orbital Sciences Corp., Germantown, MD (United States)

1995-12-31

471

ENGINEERING DEVELOPMENT OF COAL-FIRED HIGH PERFORMANCE POWER SYSTEMS  

SciTech Connect

A High Performance Power System (HIPPS) is being developed. This system is a coal-fired, combined cycle plant with indirect heating of gas turbine air. Foster Wheeler Development Corporation and a team consisting of Foster Wheeler Energy Corporation, Bechtel Corporation, University of Tennessee Space Institute and Westinghouse Electric Corporation are developing this system. In Phase 1 of the project, a conceptual design of a commercial plant was developed. Technical and economic analyses indicated that the plant would meet the goals of the project which include a 47 percent efficiency (HHV) and a 10 percent lower cost of electricity than an equivalent size PC plant. The concept uses a pyrolyzation process to convert coal into fuel gas and char. The char is fired in a High Temperature Advanced Furnace (HITAF). The HITAF is a pulverized fuel-fired boiler/air heater where steam is generated and gas turbine air is indirectly heated. The fuel gas generated in the pyrolyzer is then used to heat the gas turbine air further before it enters the gas turbine. The project is currently in Phase 2 which includes engineering analysis, laboratory testing and pilot plant testing. Research and development is being done on the HIPPS systems that are not commercial or being developed on other projects. Pilot plant testing of the pyrolyzer subsystem and the char combustion subsystem are being done separately, and after each experimental program has been completed, a larger scale pyrolyzer will be tested at the Power Systems Development Facility (PSDF) in Wilsonville, Al. The facility is equipped with a gas turbine and a topping combustor, and as such, will provide an opportunity to evaluate integrated pyrolyzer and turbine operation. This report addresses the areas of technical progress for this quarter. Preliminary process design was started with respect to the integrated test program at the PSDF. All of the construction tasks at Foster Wheeler's Combustion and Environmental Test Facility (CETF) have been completed in preparation for the char combustion test program, this includes installation of the char burner, and the on-line mass spectrometer. A test matrix has been defined, utilizing a statistical design of experiment (SDOE) methodology, for the char combustion program. The first phase of the CETF shakedown has been completed, and all analog devices (thermocouples, transmitters, etc.) have been calibrated.

NONE

1998-10-01

472

A knowledge-based search engine to navigate the information thicket of nanotoxicology.  

PubMed

The risk assessment of nano-sized materials (NM) currently suffers from great uncertainties regarding their putative toxicity for humans and the environment. An extensive amount of the respective original research literature has to be evaluated before a targeted and hypothesis-driven Environmental and Health Safety research can be stipulated. Furthermore, to comply with the European animal protection legislation in vitro testing has to be preferred whenever possible. Against this background, there is the need for tools that enable producers of NM and risk assessors for a fast and comprehensive data retrieval, thereby linking the 3Rs principle to the hazard identification of NM. Here we report on the development of a knowledge-based search engine that is tailored to the particular needs of risk assessors in the area of NM. Comprehensive retrieval of data from studies utilising in vitro as well as in vivo methods relying on the PubMed database is presented exemplarily with a titanium dioxide case study. A fast, relevant and reliable information retrieval is of paramount importance for the scientific community dedicated to develop safe NM in various product areas, and for risk assessors obliged to identify data gaps, to define additional data requirements for approval of NM and to create strategies for integrated testing using alternative methods. PMID:20850491

Sauer, Ursula G; Kneuer, Carsten; Tentschert, Jutta; Wächter, Thomas; Schroeder, Michael; Butzke, Daniel; Luch, Andreas; Liebsch, Manfred; Grune, Barbara; Götz, Mario E

2011-02-01

473

Internal and External Beliefs as the Determinants of Use Continuance for an Internet Search Engine  

NASA Astrophysics Data System (ADS)

The antecedents of IS use continuance is gaining research focus recently. The traditional beliefs based on TRA have been adopted as the main drivers of IS use continuance. They are based on the assumptions that continuance is a simple repetition of initial adoption because those belief constructs are the same with those for TAM. However, continued usage is a matter of continuous decision making in the competitive alternative systems. Furthermore, control factors such as habit, self efficacy, and self identity have been suggested to extend TRA. This study introduced self-identity, self-efficacy and perceived switching cost as a new driver for IS use continuance. 395 samples were collected from the users of a Korean internet search engine portal site. Data analysis using Structural Equation Modeling (SEM) shows that while the effect of habit overwhelms the effect of intention on continuance, it is also mediated by self identity and self efficacy. These can be considered as the internal beliefs formed by the internalization of habit. On the contrary, external beliefs such as switching cost and perceived usefulness showed no significant effect on continuance.

Hong, Soongeun; Kang, Young Sik; Lee, Heeseok; Lee, Jongwon

474

Gas Powered Air Conditioning Absorption vs. Engine-Drive  

E-print Network

not a new technology at the time, neither was the gas engine. But now in the 19901s, gas engine-drive (GED) chillers have "hit" the air conditioning market with a "bang". In the Lone Star Gas Company area in 1995, GED chillers are now being considered...

Phillips, J. N.

1996-01-01

475

A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System  

E-print Network

A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System of analysis of Distributed Concentrating Solar Combined Heat and Power (DCS-CHP) systems is a design of a theoretical solar CHP system. Then, we explore the economic and technological impetus for a solar powered

California at Berkeley, University of

476

Department of Mechanical and Nuclear Engineering Spring 2012 East Campus Power Plant Deaerator Optimization  

E-print Network

PENNSTATE Department of Mechanical and Nuclear Engineering Spring 2012 East Campus Power Plant Deaerator Optimization Overview In the East Campus Power plant a new Deaerator system has been installed. Approach Understand the inner-workings and operations of the power plant and the Deaerator system. Visit

Demirel, Melik C.

477

Facilitating Constructive Alignment in Power Systems Engineering Education Using Free and Open-Source Software  

ERIC Educational Resources Information Center

This paper describes how the use of free and open-source software (FOSS) can facilitate the application of constructive alignment theory in power systems engineering education by enabling the deep learning approach in power system analysis courses. With this aim, this paper describes the authors' approach in using the Power System Analysis Toolbox…

Vanfretti, L.; Milano, F.

2012-01-01

478

System engineering aspects and power electronics in an autonomous photovoltaic-hydrogen system  

Microsoft Academic Search

System engineering aspects have to be considered when designing an autonomous photovoltaic-hydrogen system (energy supply without grid connection). Power electronics plays an important role in such a system in order to achieve a high total efficiency of the system by decoupling via power electronics. Through that all the devices can be operated in their maximum power or maximum efficiency operation

G. Scheible; Heiko Solmecke; D. Hackstein

1998-01-01

479

Solar Power Forecasting at UC San Diego Jan Kleissl, Dept of Mechanical & Aerospace Engineering, UCSD  

E-print Network

Solar Power Forecasting at UC San Diego Jan Kleissl, Dept of Mechanical & Aerospace Engineering, UCSD Background In performancebased tariff structures, the economics of solar power on the gridscale the economics of solar power. However, accurate short term forecasting of cloudiness is required for efficient

Fainman, Yeshaiahu

480

Stirling Engines for Low-Temperature Solar-Thermal-Electric Power Generation  

E-print Network

Stirling Engines for Low-Temperature Solar-Thermal- Electric Power Generation Artin Der Minassians-Temperature Solar-Thermal-Electric Power Generation by Artin Der Minassians Karshenasi (Amirkabir University-Temperature Solar-Thermal-Electric Power Generation Copyright c 2007 by Artin Der Minassians #12;1 Abstract Stirling

Sanders, Seth

481

MEEG 435/667 Wind Power Engineering (3 credits) Spring Semester 2008  

E-print Network

MEEG 435/667 Wind Power Engineering (3 credits) Spring Semester 2008 Prof. Len Schwartz SPL 309-element theories. 5. The numerical prediction of wind power performance. Available numerical models. NREL and RERL. Additional References: 1. R. Gasch & J. Tweele, "Wind Power Plants: Fundamentals, Design, Construction

Firestone, Jeremy

482

Offshore Wind Power: Science, engineering, and policy MAST 628-010, Fall 2008  

E-print Network

Offshore Wind Power: Science, engineering, and policy MAST 628-010, Fall 2008 Revised 10 October displaced from large coal and gas generators; · Storage of intermittent wind power; · Public opposition to, and support for, wind power; communication strategies. Students should

Firestone, Jeremy

483

Theoretical proof of edge search strategy applied to power plant start-up scheduling.  

PubMed

Power plant start-up scheduling is aimed at minimizing the start-up time while limiting maximum turbine rotor stresses. This scheduling problem is highly nonlinear and has a number of local optima. In our previous research, we proposed an efficient search model: genetic algorithms (GAs) with enforcement operation to focus the search along the edge of the feasible space where the optimal schedule is supposed to stay. Based on a nonlinear dynamic simulation and a linear inverse calculation with the iteration method, the enforcement operation is applied to move schedules generated by GA toward the edge. We prove that the optimal schedule lies on the edge, ensuring that searching along the edge instead of the entire space can improve the search efficiency significantly without missing the optimum. Furthermore, we provide a theoretical setting equation for the inverse enforcement gains of the linear inverse calculation, intended to move schedules closer to the edge at each iteration of the enforcement operation. The theoretical setting equation is verified and discussed with the test results. We propose the theoretical setting equation with the test results as a guideline for the use of our proposed search model: GA with enforcement operation. PMID:18238130

Kamiya, A; Kawai, K; Ono, I; Kobayashi, S

2002-01-01

484

Low-power word-parallel nearest-Hamming-distance search circuit based on frequency mapping  

Microsoft Academic Search

Distance-frequency mapping with ring oscillators, adjustable in discrete steps, enables fast word-parallel nearest-Hamming-distance search with low power consumption. High robustness against fabrication-related variations of the MOSFET characteristics is achieved in addition. A test chip in 180 nm CMOS technology with 64 words, each consisting of 256 bits, consumes less than 36.5 mW and 307 ?W at supply voltages of 1.8

H. J. Mattausch; Wataru Imafuku; Tania Ansari; Akio Kawabata; Tetsushi Koide

2010-01-01

485

14 CFR 121.645 - Fuel supply: Turbine-engine powered airplanes, other than turbo propeller: Flag and supplemental...  

Code of Federal Regulations, 2012 CFR

...645 Fuel supply: Turbine-engine powered airplanes...for flight or takeoff a turbine-engine powered airplane...unless, considering wind and other weather conditions...person may release a turbine-engine powered airplane...enough fuel, considering wind and other weather...

2012-01-01

486

14 CFR 121.645 - Fuel supply: Turbine-engine powered airplanes, other than turbo propeller: Flag and supplemental...  

Code of Federal Regulations, 2011 CFR

...645 Fuel supply: Turbine-engine powered airplanes...for flight or takeoff a turbine-engine powered airplane...unless, considering wind and other weather conditions...person may release a turbine-engine powered airplane...enough fuel, considering wind and other weather...

2011-01-01

487

14 CFR 121.645 - Fuel supply: Turbine-engine powered airplanes, other than turbo propeller: Flag and supplemental...  

Code of Federal Regulations, 2013 CFR

...645 Fuel supply: Turbine-engine powered airplanes...for flight or takeoff a turbine-engine powered airplane...unless, considering wind and other weather conditions...person may release a turbine-engine powered airplane...enough fuel, considering wind and other weather...

2013-01-01

488

14 CFR 121.645 - Fuel supply: Turbine-engine powered airplanes, other than turbo propeller: Flag and supplemental...  

...645 Fuel supply: Turbine-engine powered airplanes...for flight or takeoff a turbine-engine powered airplane...unless, considering wind and other weather conditions...person may release a turbine-engine powered airplane...enough fuel, considering wind and other weather...

2014-01-01

489

14 CFR 121.645 - Fuel supply: Turbine-engine powered airplanes, other than turbo propeller: Flag and supplemental...  

Code of Federal Regulations, 2010 CFR

...645 Fuel supply: Turbine-engine powered airplanes...for flight or takeoff a turbine-engine powered airplane...unless, considering wind and other weather conditions...person may release a turbine-engine powered airplane...enough fuel, considering wind and other weather...

2010-01-01

490

The STOL performance of a two-engine, USB powered-lift aircraft with cross-shafted fans  

NASA Technical Reports Server (NTRS)

The short takeoff and landing capabilities that characterize the performance of powered-lift aircraft are dependent on engine thrust and are, therefore, severely affected by loss of an engine. This paper shows that the effects of engine loss on the short takeoff and landing performance of powered-lift aircraft can be effectively mitigated by cross-shafting the engine fans in a twin-engine configuration. Engine-out takeoff and landing performances are compared for three powered-lift aircraft configurations: one with four engines, one with two engines, and one with two engines in which the fans are cross-shafted. The results show that the engine-out takeoff and landing performance of the cross-shafted two-engine configuration is significantly better than that of the two-engine configuration without cross-shafting.

Stevens, V. C.; Wilson, S. B., III; Zola, C. A.

1985-01-01

491

Vertical Search Strategy in Federated Environment  

Microsoft Academic Search

\\u000a Search engines are found the most powerful tools of information systems. However, in case of multilingual systems, they are\\u000a rather oriented towards shallow techniques. This paper outlines our study into refining query language on the comparison basis\\u000a of some search engines that utilize different translation models in order to propose a novel search strategy which significantly\\u000a imposes the Web traffic

Jolanta Mizera-Pietraszko; Aleksander Zgrzywa

492

14 CFR 135.375 - Large transport category airplanes: Reciprocating engine powered: Landing limitations...  

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2014-01-01

493

14 CFR 135.365 - Large transport category airplanes: Reciprocating engine powered: Weight limitations.  

...2014-01-01 false Large transport category airplanes: Reciprocating...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR...Limitations § 135.365 Large transport category airplanes: Reciprocating...reciprocating engine powered large transport category airplane from...

2014-01-01

494

14 CFR 135.365 - Large transport category airplanes: Reciprocating engine powered: Weight limitations.  

Code of Federal Regulations, 2011 CFR

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2011-01-01

495

14 CFR 135.365 - Large transport category airplanes: Reciprocating engine powered: Weight limitations.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Large transport category airplanes: Reciprocating...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR...Limitations § 135.365 Large transport category airplanes: Reciprocating...reciprocating engine powered large transport category airplane from...

2012-01-01

496

14 CFR 135.375 - Large transport category airplanes: Reciprocating engine powered: Landing limitations...  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Large transport category airplanes...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS... § 135.375 Large transport category airplanes...engine powered large transport category airplane...favorable direction in still air. (2) The...

2010-01-01

497

14 CFR 135.365 - Large transport category airplanes: Reciprocating engine powered: Weight limitations.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Large transport category airplanes: Reciprocating...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR...Limitations § 135.365 Large transport category airplanes: Reciprocating...reciprocating engine powered large transport category airplane from...

2013-01-01

498

14 CFR 135.387 - Large transport category airplanes: Turbine engine powered: Landing limitations: Alternate airports.  

Code of Federal Regulations, 2013 CFR

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2013-01-01

499

14 CFR 135.387 - Large transport category airplanes: Turbine engine powered: Landing limitations: Alternate airports.  

Code of Federal Regulations, 2010 CFR

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2010-01-01

500

14 CFR 135.387 - Large transport category airplanes: Turbine engine powered: Landing limitations: Alternate airports.  

...2014-01-01 false Large transport category airplanes: Turbine...TRANSPORTATION (CONTINUED) AIR CARRIERS AND OPERATORS FOR...Limitations § 135.387 Large transport category airplanes: Turbine...turbine engine powered large transport category airplane...

2014-01-01