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1

CERTIFIED SEARCH ENGINE ENGINEER  

Microsoft Academic Search

According to Gartner Group (June 2000) 81% of all website traffic is generated through search engines. Surprisingly many companies invest heavily in building up e-commerce sites and pro- moting them through on- and offline advertising, but show little care in positioning their site within search engines or directories. Defining the right keywords is one parameter of successful search engine positioning;

Clemens Bechter

2

Meta Search Engines.  

ERIC Educational Resources Information Center

Describes common options and features to consider in evaluating which meta search engine will best meet a searcher's needs. Discusses number and names of engines searched; other sources and specialty engines; search queries; other search options; and results options. (AEF)

Garman, Nancy

1999-01-01

3

Linda Pagli Search Engines  

E-print Network

Linda Pagli Search Engines Abstract The so called Search Engines are basic tools to search in the memories of the search engines; the incoming requests are then processed into these enormous indices of keywords. The first search engines did not function very well: after a query one was submerged of useless

Qian, Ning

4

Search Engine Watch  

NSDL National Science Digital Library

Search Engine Watch is a resource designed to provide information to two distinct groups of users: web professionals (commercial webmasters, site designers and promoters), and web searchers. The Webmaster's Guide to Search Engines contains information on search engine design, ranking, and tips on how to make sure your site receives a high relevance rating. Search Engine Facts and Fun contains information on the major search services and links to selected search engine tutorials and ratings articles, among other features.

5

CatS: A Classification-Powered Meta-Search Engine  

Microsoft Academic Search

Summary. CatS is a meta-search engine that utilizes text classification techniques to improve the presentation of search results. After posting a query, the user is offered an opportunity to refine the results by browsing through a category tree derived from the dmoz Open Direc- tory topic hierarchy. This paper describes some key aspects of the system (including HTML parsing, classification

Milos Radovanovi; D. Obradovi

6

Comparing Internet Search Engines  

Microsoft Academic Search

Search engines are sophisticated utilities designed expressly to find information on the global Internet. An expensive combination of high-speed computer networks and specialized software, they are usually created by large corporations and occasionally by universities. They are freely available to anyone with Internet access, and there are no search restrictions. With more than 150 search engines available, choosing the right

Andrew Kingoff

1997-01-01

7

Geoscience Job Search Engine  

NSDL National Science Digital Library

The Scripps Institution of Oceanography at the University of California, San Diego provides the Geoscience Job Search Engine. The search engine lists academic, industry, and student opportunities in the US and other countries. Searchable fields range from aqueous geochemistry to environmental engineering to volcanology.

8

Search Engine Showdown  

NSDL National Science Digital Library

Created and maintained by Greg Notess, author of Government Information on the Internet and a columnist in Online and Database, this site offers reviews, analysis, statistics, and strategies for many of the major search engines. Organized in four primary sections (Features, Analysis, Learning, News & Talk) the site explores topics such as search engine database size and capabilities, searching for Usenet and phone number information, subject guides, multiple search engines, and tips on successful searching. The site appear to be regularly updated and additional resources include a newsletter, which users may subscribe to at the site.

9

Search Engines Worldwide  

NSDL National Science Digital Library

Created and maintained by Toyo Takakuwa, this no-nonsense metasite is quite simply an extensive list of search engines and directories, 850 from 130 nations, listed alphabetically by country. Clicking on a country produces a list of search engine banners (in the right-hand window or a new window from the no-frames site) that link to the search engines. Whether users are looking for a search engine from Armenia, Bolivia, Lebanon, Samoa, Yemen, or just about anywhere else, they will find it here.

1997-01-01

10

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.

11

Custom Search Engines: Tools & Tips  

ERIC Educational Resources Information Center

Few have the resources to build a Google or Yahoo! from scratch. Yet anyone can build a search engine based on a subset of the large search engines' databases. Use Google Custom Search Engine or Yahoo! Search Builder or any of the other similar programs to create a vertical search engine targeting sites of interest to users. The basic steps to…

Notess, Greg R.

2008-01-01

12

NPR: Search Engine Wars  

NSDL National Science Digital Library

In April 2004, NPR produced a five-part series to "look at the business of search engines." The stories address how search engines have grown over the years in terms of developing new technologies, expanding public reach, and ultimately becoming a profit-making (and competitive) enterprise. This website offers audio clips of the radio shows along with links to related websites.

13

Search Engine Meeting Report  

NSDL National Science Digital Library

The Fifth Annual Search Engine Meeting was held in Boston, April 10-11, and Chris Sherman, author of the About.com Guide to Web Search (see the December 3, 1999 Scout Report), was in attendance. His detailed, five-part report covers the most important presentations and panel discussions featured at the conference, including Danny Sullivan's State of the Search Engines Report, a talk by Inktomi co-founder Eric Brewer, reports on MSN Search and FAST, a look into the future of intelligent agents, and a spirited panel presentation and open discussion between the chief technologists of the major engines and members of the audience.

14

USGS Search Engine  

NSDL National Science Digital Library

Users can search the large number of the U.S. Geological Survey's web pages with this engine. In addition to the search box (where a key word or title can be typed), the search is further refined by the incorporation of links to categories of topics. The topics consist of resource types such as Fact Sheets or Maps, subjects such as minerals or water quality, or an organizational search on USGS State offices or programs.

15

Power law scaling for the adiabatic algorithm for search engine ranking  

E-print Network

An important method for search engine result ranking works by finding the principal eigenvector of the "Google matrix." Recently, a quantum algorithm for preparing this eigenvector and evidence of an exponential speedup for some scale-free networks were presented. Here, we show that the run-time depends on features of the graphs other than the degree distribution, and can be altered sufficiently to rule out a general exponential speedup. For a sample of graphs with degree distributions that more closely resemble the Web than in previous work, the proposed algorithm for eigenvector preparation does not appear to run exponentially faster than the classical case.

Adam Frees; John King Gamble; Kenneth Rudinger; Eric Bach; Mark Friesen; Robert Joynt; S. N. Coppersmith

2012-12-05

16

Power law scaling for the adiabatic algorithm for search engine ranking  

NASA Astrophysics Data System (ADS)

An important method for search engine result ranking works by finding the principal eigenvector of the ``Google matrix." Recently, a quantum algorithm for this problem and evidence of an exponential speedup for some scale-free networks were presented. Here, we show that the run-time depends on features of the graphs other than the degree distribution, and can be altered sufficiently to rule out a general exponential speedup. For a sample of graphs with degree distributions that more closely resemble the Web than in the previous work, the proposed algorithm does not appear to run exponentially faster than the classical one.

Frees, Adam; King Gamble, John; Rudinger, Kenneth; Bach, Eric; Friesen, Mark; Joynt, Robert; Coppersmith, S. N.

2013-03-01

17

Search Engine Bias and the Demise of Search Engine Utopianism  

NASA Astrophysics Data System (ADS)

Due to search engines' automated operations, people often assume that search engines display search results neutrally and without bias. However, this perception is mistaken. Like any other media company, search engines affirmatively control their users' experiences, which has the consequence of skewing search results (a phenomenon called "search engine bias"). Some commentators believe that search engine bias is a defect requiring legislative correction. Instead, this chapter argues that search engine bias is the beneficial consequence of search engines optimizing content for their users. The chapter further argues that the most problematic aspect of search engine bias, the "winner-take-all" effect caused by top placement in search results, will be mooted by emerging personalized search technology.

Goldman, E.

18

Web Search Engines.  

ERIC Educational Resources Information Center

Looks briefly at the history of World Wide Web search engine development and considers the current state of affairs. Reflects on future directions in terms of personalization, summarization, query expansion, coverage, and metadata. (Author/AEF)

Schwartz, Candy

1998-01-01

19

Measuring Search Engine Quality  

Microsoft Academic Search

The effectiveness of twenty public search engines is evaluated using TREC-inspired methodsand a set of 54 queries taken from real Web search logs. The World Wide Web is taken as thetest collection and a combination of crawler and text retrieval system is evaluated. The enginesare compared on a range of measures derivable from binary relevance judgments of the firstseven live

David Hawking; Nick Craswell; Peter Bailey; Kathleen Griffiths

2001-01-01

20

With News Search Engines  

ERIC Educational Resources Information Center

Although there are many news search engines on the Web, finding the news items one wants can be challenging. Choosing appropriate search terms is one of the biggest challenges. Unless one has seen the article that one is seeking, it is often difficult to select words that were used in the headline or text of the article. The limited archives of…

Gunn, Holly

2005-01-01

21

Power-law scaling for the adiabatic algorithm for search-engine ranking  

NASA Astrophysics Data System (ADS)

An important method for search engine result ranking works by finding the principal eigenvector of the “Google matrix.” Recently, a quantum algorithm for generating this eigenvector as a quantum state was presented, with evidence of an exponential speedup of this process for some scale-free networks. Here we show that the run time depends on features of the graphs other than the degree distribution, and can be altered sufficiently to rule out a general exponential speedup. According to our simulations, for a sample of graphs with degree distributions that are scale-free, with parameters thought to closely resemble the Web, the proposed algorithm for eigenvector preparation does not appear to run exponentially faster than the classical case.

Frees, Adam; Gamble, John King; Rudinger, Kenneth; Bach, Eric; Friesen, Mark; Joynt, Robert; Coppersmith, S. N.

2013-09-01

22

Web Search Engines: Search Syntax and Features.  

ERIC Educational Resources Information Center

Presents a chart that explains the search syntax, features, and commands used by the 12 most widely used general Web search engines. Discusses Web standardization, expanded types of content searched, size of databases, and search engines that include both simple and advanced versions. (LRW)

Ojala, Marydee

2002-01-01

23

Search-based software engineering  

Microsoft Academic Search

This paper claims that a new field of Software Engineering research and practice is emerging: Search-Based Software Engineering. The paper argues that Software Engineering is ideal for the application of metaheuristic search techniques, such as genetic algorithms, simulated annealing and tabu search. Such search-based techniques could provide solutions to the difficult problems of balancing competing (and sometimes inconsistent) constraints and

Mark Harman; Bryan F. Jones

2001-01-01

24

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.

25

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.

26

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

27

Mining Templates from Search Result Records of Search Engines  

E-print Network

Mining Templates from Search Result Records of Search Engines Hongkun Zhao, Weiyi Meng State from search engines in response to user queries. The search result records from a given search engine template for any search engine using sample search result records. Our approach can identify both template

Meng, Weiyi

28

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

29

Web Search Studies: Multidisciplinary Perspectives on Web Search Engines  

Microsoft Academic Search

\\u000a Perhaps the most significant tool of our internet age is the web search engine, providing a powerful interface for accessing\\u000a the vast amount of information available on the world wide web and beyond. While still in its infancy compared to the knowledge\\u000a tools that precede it – such as the dictionary or encyclopedia – the impact of web search engines

Michael Zimmer

30

SavvySearch: A MetaSearch Engine that Learns which Search Engines to Query  

E-print Network

SavvySearch: A Meta­Search Engine that Learns which Search Engines to Query Adele E. Howe Daniel Collins, CO 80523 howe@cs.colostate.edu daniel@media.mit.edu January 28, 1997 Abstract Search engines are among the most successful applications on the Web today. So many search engines have been created

Howe, Adele E.

31

Semantic Search Engines  

Microsoft Academic Search

\\u000a Typical electronic business applications need to make queries about products and services made available by sellers and service\\u000a providers through the Web. Unfortunately, it can be a very time consuming task to discover information as simple as those,\\u000a since every site has its own metaphore. The so-called search engines can facilitate such task because a client provides some\\u000a keywords and obtain a list

Alcides Calsavara; Glauco Schmidt

2004-01-01

32

Domain Specific Search Engines  

Microsoft Academic Search

This Chapter discusses the advantages and limitations of domain specific search engine technology for the development of tourism web portals. The case example outlined here focuses on www.visiteuropeancities.info - the European Cities Tour- ism Portal, the B2C site offered by European Cities Tourism, a pan-European as- sociation of currently 90 European city tourism boards representing more than 30 European countries.

Karl W. Wöber

33

Search Engine-Crawler Symbiosis  

Microsoft Academic Search

Web crawlers have been used for nearly a decade as a search en- gine component to create and update large collections of docu- ments. Typically the crawler and the rest of the search engine are not closely integrated. If the purpose of a search engine is to have as large a collection as possible to serve the general Web community,

Gautam Pant; Shannon Bradshaw; Filippo Menczer

2003-01-01

34

Search Engine Marketing: Transforming Search Engines into Hotel Distribution Channels  

Microsoft Academic Search

Search engine marketing (SEM) is a form of online marketing whereby marketers and webmasters use a range of techniques to ensure that their webpage listing appears in a favorable location in search engines’ results pages (e.g., Google, Bing, AlltheWeb, Altavista). The key strategy is to optimize webpages for the search engines, by ensuring that the company’s webpages contain appropriate keywords

Alexandros Paraskevas; Ioannis Katsogridakis; Rob Law; Dimitrios Buhalis

2011-01-01

35

Evaluation of Query Generators for Entity Search Engines  

Microsoft Academic Search

Dynamic web applications such as mashups need efficient access to web data\\u000athat is only accessible via entity search engines (e.g. product or publication\\u000asearch engines). However, most current mashup systems and applications only\\u000asupport simple keyword searches for retrieving data from search engines. We\\u000apropose the use of more powerful search strategies building on so-called query\\u000agenerators. For a

Stefan Endrullis; Andreas Thor; Erhard Rahm

2010-01-01

36

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

E-print Network

SEE: 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, which could be used for finding other relevant search engines retrieving its own databases, which

37

Stirling engine power control  

DOEpatents

A power control method and apparatus for a Stirling engine including a valved duct connected to the junction of the regenerator and the cooler and running to a bypass chamber connected between the heater and the cylinder. An oscillating zone of demarcation between the hot and cold portions of the working gas is established in the bypass chamber, and the engine pistons and cylinders can run cold.

Fraser, James P. (Scotia, NY)

1983-01-01

38

Site-Searching Strategies of Searchers Referred from Search Engines  

E-print Network

1 Site-Searching Strategies of Searchers Referred from Search Engines Adan Ortiz-Cordova College search engines. Findings are based on a random sample of 10,000 from a total of 327,261 searching of referral keywords (i.e., search terms) used at the major search engine. Of the six, the three major

Jansen, James

39

Yahoo! Debuts New Search Engine  

NSDL National Science Digital Library

In 1996 Yahoo! enhanced its search interface to help users more quickly reach the Internet resources they need. Searches return a summary page, which presents hits in four categories: Yahoo Categories, Web Sites, Net Events (from the Yahoo Net Events site) and News (from Reuters, PR Newswire, Business Wire, and UPI). If a search comes up empty in these four categories, it will be referred to the Alta Vista search engine for an Internet-wide search. In addition, search results are now presented in order of relevance (as determined by the search engine, which may have a fairly sketchy grasp on what the user really wants) rather than alphabetically, though the user can choose an alphabetical list instead. An advanced search page allows limited Boolean operation, searching of particular Yahoo! resources, a time frame for listings, and how many matches to display per page.

40

THE SEARCH ENGINE MAP LANDSCAPE  

Microsoft Academic Search

A variety of experiments have been conducted beginning in 2001 to examine the state of maps and the Internet, particularly in reference to their availability through search engines. Search engines are viewed here as a window to the Internet, a way of understanding what types of maps are easily available to Internet users. In order to improve the Internet as

Michael P. Peterson

41

Assessing Bias in Search Engines.  

ERIC Educational Resources Information Center

Addresses the measurement of bias in search engines on the Web, defining bias as the balance and representation of items in a collection retrieved from a database for a set of queries. Assesses bias by measuring the deviation from the ideal of the distribution produced by a particular search engine. (Author/LRW)

Mowshowitz, Abbe; Kawaguchi, Akira

2002-01-01

42

Web Search Studies: Multidisciplinary Perspectives on Web Search Engines  

NASA Astrophysics Data System (ADS)

Perhaps the most significant tool of our internet age is the web search engine, providing a powerful interface for accessing the vast amount of information available on the world wide web and beyond. While still in its infancy compared to the knowledge tools that precede it - such as the dictionary or encyclopedia - the impact of web search engines on society and culture has already received considerable attention from a variety of academic disciplines and perspectives. This article aims to organize a meta-discipline of “web search studies,” centered around a nucleus of major research on web search engines from five key perspectives: technical foundations and evaluations; transaction log analyses; user studies; political, ethical, and cultural critiques; and legal and policy analyses.

Zimmer, Michael

43

Start Your Engines: Surfing with Search Engines for Kids.  

ERIC Educational Resources Information Center

Suggests that to be an effective educator and user of the Web it is essential to know the basics about search engines. Presents tips for using search engines. Describes several search engines for children and young adults, as well as some general filtered search engines for children. (AEF)

Byerly, Greg; Brodie, Carolyn S.

1999-01-01

44

Exploiting Web Search Engines to Search Structured Information  

Microsoft Academic Search

Web search engines leverage information from structured databases to answer queries. For example, many product related queries on search engines (Amazon, Google, Yahoo, Live Search) are answered by searching underlying product databases containing names, descriptions, specifications, and reviews of products. However, these vertical search engines are \\

Sanjay Agrawal; Kaushik Chakrabarti; Surajit Chaudhuri; Venkatesh Ganti; Arnd Christian König; Dong Xin

2009-01-01

45

Estimating the Usefulness of Search Engines  

Microsoft Academic Search

In this paper, we present a statistical method to estimatethe usefulness of a search engine for any givenquery. The estimates can be used by a metasearch engineto choose local search engines to invoke. For agiven query, the usefulness of a search engine in thispaper is defined to be a combination of the numberof documents in the search engine that are

Weiyi Meng; King-lup Liu; Clement T. Yu; Wensheng Wu; N. Naphtali Rishe

1999-01-01

46

Formal Topology and Search Engine Silvio Valentini  

E-print Network

Formal Topology and Search Engine Silvio Valentini Dipartimento di Matematica Pura ed Applicata, 2001 Abstract Formal topology can be the key tool to create a new kind of search engine for finding information in the web. 1 The need for topology in a search engine The purpose of a search engine is to find

Valentini, Silvio

47

Impact of search engines on page popularity  

Microsoft Academic Search

Recent studies show that a majority of Web page accesses are referred by search engines. In this paper we study the widespread use of Web search engines and its impact on the ecology of the Web. In particular, we study how much impact search engines have on the popularity evolution of Web pages. For example, given that search engines return

Junghoo Cho; Sourashis Roy

2004-01-01

48

Sampling search-engine results  

Microsoft Academic Search

We consider the problem of efficiently sampling Web search engine query results. In turn, using a small random sample instead of the full set of results leads to efficient approximate algorithms for several applications, such as: Determining the set of categories in a given taxonomy spanned by the search results;Finding the range of metadata values associated to the result set

Aris Anagnostopoulos; Andrei Z. Broder; David Carmel

2005-01-01

49

Competition between Internet Search Engines  

Microsoft Academic Search

The Internet search engine market has seen a proliferation of entrants over the last few years. While Yahoo! was the early market leader, there has been entry by both lower quality engines and higher quality ones. Prior work on quality differentiation requires that low quality products have low prices, in order to survive in a market with high quality products.

Tridas Mukhopadhyay; Uday Rajan; Rahul Telang

2004-01-01

50

A Simple Model of Search Engine Pricing  

Microsoft Academic Search

We present a simple model of how a monopolistic search engine optimally determines the average relevance of firms in its search pool. In our model, there is a continuum of consumers, who use the search engine's pool, and there is a continuum of firms, whose entry to the pool is restricted by a price?per?click set by the search engine. We

Kfir Eliaz; Ran Spiegler

2011-01-01

51

Search Based Software Engineering: Techniques, Taxonomy, Tutorial  

E-print Network

Search Based Software Engineering: Techniques, Taxonomy, Tutorial Mark Harman1 , Phil McMinn2 State University of Cear´a, Brazil Abstract. The aim of Search Based Software Engineering (SBSE) research is to move soft- ware engineering problems from human-based search to machine-based search, using

Singer, Jeremy

52

Search Based Software Engineering Mark Harman  

E-print Network

Search Based Software Engineering Mark Harman King's College London, Strand, London, WC2R 2LS. The aim of Search Based Software Engineering (SBSE) research is to move software engineering problems from describes the search based approach, providing pointers to the literature. 1 Introduction Software engineers

Singer, Jeremy

53

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

E-print Network

for branding in the search engine market? These are some of the questions that motivate our researchUser Reactions to Search Engines Logos: Investigating Brand Knowledge of web Search Engines Bernard logos. Our research is motivated by a small number of search engines dominating a market in which

Jansen, James

54

Web Search Engines: (More) Features and Commands.  

ERIC Educational Resources Information Center

Provides a summary look at the features provided by nine major World Wide Web search engines. Examines size, Boolean operators, phrase searching capabilities, media searching, format options, and special features. (LRW)

Hock, Randolph

2000-01-01

55

On caching search engine query results  

Microsoft Academic Search

In this paper we explore the problem of Caching of Search Engine Query Results in order to reduce the computing and I\\/O requirements needed to support the functionality of a search engine of the World Wide Web.We study query traces from the EXCITE search engine and show that they have a significant amount of temporal locality that is, a significant

Evangelos P. Markatos

2001-01-01

56

An Analysis of Chinese Search Engine Filtering  

Microsoft Academic Search

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

Tao Zhu; Christopher Bronk; Dan S. Wallach

2011-01-01

57

AGORA: A Search Engine for Software Components  

Microsoft Academic Search

Using JavaBeans and CORBA agents in conjunction with Web search technologies, this prototype search engine (Agora), automatically generates and indexes a worldwide database of software products, classified by component model. Users of Agora can search for components in this database by describing specific properties of a component's interface. The system combines Web search engines with an introspection process. Introspection, primarily

Robert C. Seacord; Scott A. Hissam; Kurt C. Wallnau

1998-01-01

58

Are pay for performance search engines relevant?  

Microsoft Academic Search

Pay for performance (PFP) search engines, like their ‘traditional’ counterparts (e.g. Google), provide search services for documents on the World Wide Web. These search engines, however, rank documents not on content characteristics but according to the amount of money a vendor is willing to pay when a user visits a web site appearing in the search results page. A study

Dion H. Goh; Rebecca P. Ang

2002-01-01

59

(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

60

A Powerful New Engine  

NASA Technical Reports Server (NTRS)

Through Small Business Innovation Research (SBIR) funding from NASA's Glenn Research Center, Moller International created a new coating for rotary engines, which significantly improves the fuel consumption of a vehicle while reducing emissions. The new coatings are offered in the new Rotapower(R) engine, which is produced and distributed by Moller subsidiary, Freedom Motors, Inc. The coating allows the Rotapower engine to function smoother than other models, reducing wear and protecting the engine. The Rotapower engine has the ability to operate on a variety of fuels, including gasoline, natural gas, diesel, alcohol, and kerosene. A small and lightweight engine, it is projected to replace many of today's bulkier versions. The 10 horsepower model fits in the palm of one's hand, while the 160 horsepower model fits into a 5-gallon bucket. The clean running Rotapower engine is environmentally appealing, because it eliminates over 98 percent of the total emissions given off by traditional piston engines. Fewer pollutants are spewed into the air, making it especially attractive in areas where air pollution is a major problem. Due to the clean-burning nature of the engine, it meets the stringent standards set by the California Air Resources Board. The engine also has numerous commercial benefits in several types of recreational, industrial, and transportation applications, including personal watercraft, snowmobiles, portable generators. and pumps.

2001-01-01

61

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

62

MEMS Rotary Engine Power System  

NASA Astrophysics Data System (ADS)

This work presents a project overview and recent research results for the MEMS Rotary Engine Power System project at the Berkeley Sensor & Actuator Center of the University of California at Berkeley. The research motivation for the project is the high specific energy density of hydrocarbon fuels. When compared with the energy density of batteries, hydrocarbon fuels may have as much as 20x more energy. However, the technical challenge is the conversion of hydrocarbon fuel to electricity in an efficient and clean micro engine. A 12.9 mm diameter Wankel engine will be shown that has already generated 4 Watts of power at 9300rpm. In addition, the 1mm and 2.4 mm Wankel engines that BSAC is developing for power generation at the microscale will be discussed. The project goal is to develop electrical power output of 90milliwatts from the 2.4 mm engine. Prototype engine components have already been fabricated and these will be described. The integrated generator design concept utilizes a nickel-iron alloy electroplated in the engine rotor poles, so that the engine rotor also serves as the generator rotor.

Fernandez-Pello, A. Carlos; Pisano, Albert P.; Fu, Kelvin; Walther, David C.; Knobloch, Aaron; Martinez, Fabian; Senesky, Matt; Stoldt, Conrad; Maboudian, Roya; Sanders, Seth; Liepmann, Dorian

63

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

64

Using Search Engines with ESL Students.  

ERIC Educational Resources Information Center

Presents a lesson that introduces search engines to high intermediate-level English-as-a-Second-Language students in grades 6-12. Over several days, students learn how to use three search engines (infoseek, AltaVista, and Yahoo!) to search the Internet for information effectively. Students can work together online to create a customized list of…

Kantor, Joan Schneider

1998-01-01

65

Challenges in running a commercial search engine  

Microsoft Academic Search

These are exciting times for Information Retrieval. Web search engines have brought IR to the masses. It now affects the lives of hundreds of millions of people, and growing, as Internet search companies launch ever more products based on techniques developed in These are exciting times for Information Retrieval. Web search engines have brought IR to the masses. It now

Amit Singhal

2005-01-01

66

Search Engine Privacy Fitria Nur Andini  

E-print Network

: · A web search engine is a software system that is designed to search for information on the World Wide of Search Engine Privacy · Subject Privacy #12;Google Web History · http://google.com/history #12;HTTP're already signed in. This may happen more frequently for services like Web History which involves your

Hoepman, Jaap-Henk

67

Internet Search Engines - Fluctuations in Document Accessibility.  

ERIC Educational Resources Information Center

Reports an empirical investigation of the consistency of retrieval through Internet search engines. Evaluates 13 engines: AltaVista, EuroFerret, Excite, HotBot, InfoSeek, Lycos, MSN, NorthernLight, Snap, WebCrawler, and three national Dutch engines: Ilse, Search.nl and Vindex. The focus is on a characteristic related to size: the degree of…

Mettrop, Wouter; Nieuwenhuysen, Paul

2001-01-01

68

Exploiting web search engines to search structured databases  

Microsoft Academic Search

Web search engines often federate many user queries to rel- evant structured databases. For example, a product related query might be federated to a product database containing their descriptions and specications. The relevant struc- tured data items are then returned to the user along with web search results. However, each structured database is searched in isolation. Hence, the search often

Sanjay Agrawal; Kaushik Chakrabarti; Surajit Chaudhuri; Venkatesh Ganti; Arnd Christian König; Dong Xin

2009-01-01

69

Web Search Engines: Features and Commands.  

ERIC Educational Resources Information Center

Presents a chart comparing Web search engines. Discusses features covered in the chart: size; Boolean Operators and Parentheses; phrase searching; proximity; truncation; title, date and URL fields; links to a URL; language; media searching; name; case sensitivity; searches all common words; directory attached; gives count for answer; gives term…

Hock, Randolph

1999-01-01

70

Supreme Court audio file search engine  

E-print Network

Search engines have evolved from simple text indexing to indexing other forms of media, such as audio and video. I have designed and implemented a web-based system that permits people to search the transcripts of selected ...

Wang, Edward M., 1976-

2004-01-01

71

A Content-Based Image Meta-Search Engine using Relevance Feedback  

Microsoft Academic Search

Search engines are the most powerful resources for finding information on the rapidly expanding World-Wide Web.Finding the desired search engines and learning how to use them, however, can be very time consuming. Metasearchengines, which integrate a group of such search tools, enable users to access information across the world in atransparent and more efficient manner. The recent emergence of visual

Ana Benitez; Mandis Beigi; Shih-fu Chang

1998-01-01

72

MetaSEEk: A Content-Based Meta-Search Engine for Images  

Microsoft Academic Search

Search engines are the most powerful resources for finding information on the rapidly expanding World Wide Web (WWW). Finding the desired search engines and learning how to use them, however, can be very time consuming. The integration of such search tools enables the users to access information across the world in a transparent and efficient manner. These systems are called

Mandis Beigi; Ana B. Benitez; Shih-Fu Chang

1997-01-01

73

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.

74

Power control for heat engines  

DOEpatents

A power control arrangement for a Stirling engine includes a sleeve mounted in each cylinder for axial movement and a port in the sleeve leading to a dead space. The port is covered by the piston at a position that is determined by the piston position and the axial adjustment of the sleeve. The compression phase of the Stirling cycle for that piston begins when the port is covered, so the position of the sleeve is used to set the Stirling engine power level.

Dineen, John J. (Durham, NH)

1984-01-01

75

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

76

The Mathematics of Internet Search Engines David Marshall  

E-print Network

The Mathematics of Internet Search Engines David Marshall Department of Mathematics Monmouth University April 4, 2007 #12;Introduction Search Engines, Then and Now Then . . . Now . . . Pagerank #12;Outline Introduction Search Engines, Then and Now Then . . . Now . . . Pagerank #12;Mathematics

Marshall, David

77

Catalog Search Engine: Semantics applied to products search  

Microsoft Academic Search

The Semantic Web introduces the need for semantic search engines. In this paper, we explain our vision of a catalog search engine for semantically deflned products. With our prototype, we address the problem of products' information retrieval over the Internet and their semantic enrichment through the mixed usage of thesauruses and on- tologies. We show how we automatically build a

Jacques-Albert De Blasio; Takahiro Kawamura; Tetsuo Hasegawa

78

MEMS Rotary Engine Power System  

Microsoft Academic Search

This work presents a project overview and recent research results for the MEMS Rotary Engine Power System project at the Berkeley Sensor & Actuator Center of the University of California at Berkeley. The research motivation for the project is the high specific energy density of hydrocarbon fuels. When compared with the energy density of batteries, hydrocarbon fuels may have as

A. Carlos Fernandez-Pello; Albert P. Pisano; Kelvin Fu; David C. Walther; Aaron Knobloch; Fabian Martinez; Matt Senesky; Conrad Stoldt; Roya Maboudian; Seth Sanders; Dorian Liepmann

2003-01-01

79

World Wide Web Search Engines 155 World Wide Web  

E-print Network

World Wide Web Search Engines 155 Chapter 10 World Wide Web SearchEngines Wen-Chen Hu Auburn search engines; however, the dominant search method has yet to be identified. This chapter, acomparativestudyofmajorcommercialandexperimentalsearchenginesispresented,and some future research directions for Web search engines are suggested. INTRODUCTION One

Hu, Wen-Chen

80

A refreshing perspective of search engine caching  

Microsoft Academic Search

Commercial Web search engines have to process user queries over huge Web indexes under tight latency constraints. In practice, to achieve low latency, large result caches are employed and a portion of the query traffic is served using previously computed results. Moreover, search engines need to update their indexes frequently to incorporate changes to the Web. After every index update,

Berkant Barla Cambazoglu; Flavio Paiva Junqueira; Vassilis Plachouras; Scott A. Banachowski; Baoqiu Cui; Swee Lim; Bill Bridge

2010-01-01

81

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

82

Subject Gateway Sites and Search Engine Ranking.  

ERIC Educational Resources Information Center

Discusses subject gateway sites and commercial search engines for the Web and presents an explanation of Google's PageRank algorithm. The principle question addressed is the conditions under which a gateway site will increase the likelihood that a target page is found in search engines. (LRW)

Thelwall, Mike

2002-01-01

83

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 for children, primarily in terms of being easy to read, for example for doing background research for science fair projects. 4. Edith thinks that a search engine probably should give higher weight to terms

Ward, Nigel

84

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

85

Job Search: Regional/Quality Job Search Engines  

E-print Network

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

86

Smart internet search engine through 6W  

NASA Astrophysics Data System (ADS)

Current Internet search engine technology is limited in its ability to display necessary relevant information to the user. Yahoo, Google and Microsoft use lookup tables or indexes which limits the ability of users to find their desired information. While these companies have improved their results over the years by enhancing their existing technology and algorithms with specialized heuristics such as PageRank, there is a need for a next generation smart search engine that can effectively interpret the relevance of user searches and provide the actual information requested. This paper explores whether a smarter Internet search engine can effectively fulfill a user's needs through the use of 6W representations.

Goehler, Stephen; Cader, Masud; Szu, Harold

2006-04-01

87

World Wide Web Image Search Engines  

Microsoft Academic Search

We propose the development of a world wide web image search engine that crawls the web collecting information about the images it finds, computes the appropriate image decompositions and indices, and stores this extracted infor- mation for searches based on image content. Indexing and searching images need not require solving the image under- standing problem. Instead, the general approach should

Stan Sclaroff

1995-01-01

88

NASA indexing benchmarks: evaluating text search engines  

Microsoft Academic Search

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 tool-kit capable of automatically indexing,

Sandra L. Esler; Michael L. Nelson

1997-01-01

89

Inquirus, the NECI Meta Search Engine  

Microsoft Academic Search

World Wide Web (WWW) search engines (e.g. AltaVista, Infoseek, HotBot, etc.) have a number of deficiencies including: periods of downtime, low coverage of the WWW, inconsistent and inefficient user interfaces, out of date databases, poor relevancy ranking and precision, and difficulties with spamming techniques. Meta search engines have been introduced which address some of these and other difficulties in searching

Steve Lawrence; C. Lee Giles

1998-01-01

90

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

E-print Network

Modeling 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 of federated search focused on selecting search engines that have the most relevant contents, but ignored

Callan, Jamie

91

The influence of search engines on preferential attachment Alan Frieze  

E-print Network

Abstract There is much current interest in the evolution of social networks, in particular, the Web graph the observed power-law degree distribution of the Web graph reasonably well. However, existing evolution models do not include the significant influence of search engines on how Web page authors find existing

Frieze, Alan

92

Piston and spring powered engine  

SciTech Connect

The invention is an improved piston engine, either two stroke or four stroke. In one, two stroke, one cylinder embodiment, the improvement comprises two springs connecting between the piston and the base of the piston. These springs are relatively relaxed when the crank is at top dead center. Then during the power/intake stroke, some of the fuel's energy is delivered to the crankshaft and some is used to compress the springs. The stored energy in the springs is delivered to the crankshaft during the exhaust/compression stroke while the springs return to their relatively relaxed condition. As a result, energy is delivered to the crankshaft during both strokes of the cycle, and the engine runs smooth. In one, four stroke, two cylinder embodiment, each cylinder has springs as described above, the cranks of each cylinder are aligned, and the cam sets one cylinder in the power stroke while the other is in the intake stroke. As a result, the engine runs smooth because energy is delivered to the crankshaft during all four strokes of the cycle, during two of the strokes by the burning fuel and during the other two by the release of energy in the springs. In both embodiments, a heavy crankshaft is not needed because of the more uniform power delivery.

Samodovitz, A. J.

1985-12-10

93

Search engine application of SME based on precision marketing  

Microsoft Academic Search

Along with the development of network economy, search engine is becoming one of the important integral parts of SMEs' precision marketing. Starting with the basic conceptions of precision marketing and search engine, analysis and evaluation of integrated search engines and vertical search engine, it raised the volume of the truth and face the issue of infringement, which is of active

Zhongyan Lin

2011-01-01

94

Specialized Search Engines: Alternatives to the Big Guys.  

ERIC Educational Resources Information Center

Discusses specialized search engines for information on specific topics on the Internet. Explains reasons for using specialized search engines; highlights search engines in the fields of health care, legal information, and multimedia formats; and provides Web sites that are helpful in finding other specialized search engines. (LRW)

King, David

2000-01-01

95

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

E-print Network

­ 1 ­ A World Wide Web Search Engine Using Hyperlink Structure To Improve Web Searches Hong Fan Web Search Engine Using Hyperlink Structure To Improve Web Searches Hong Fan A Project Report ABSTRACT A World Wide Web Search Engine Using Link Structure To Improve Web Searches Hong Fan Master

96

Peak power plays in database engines  

Microsoft Academic Search

Database engines often consume significant power during query processing activities, motivating researchers to investigate the redesign of their internals to minimize these overheads. While the prior literature has dealt exclusively with average power considerations, our focus here is on peak power consumption. We begin by profiling the peak power behavior of a representative suite of popular commercial database engines in

Mayuresh Kunjir; Puneet K. Birwa; Jayant R. Haritsa

2012-01-01

97

FPGA Acceleration of RankBoost in Web Search Engines  

Microsoft Academic Search

Search relevance is a key measurement for the usefulness of search engines. Shift of search relevance among search engines can easily change a search company's market cap by tens of billions of dollars. With the ever-increasing scale of the Web, machine learning technologies have become important tools to improve search relevance ranking. RankBoost is a promising algorithm in this area,

Ning-yi Xu; Xiong-Fei Cai; Rui Gao; Lei Zhang; Feng-hsiung Hsu

2009-01-01

98

Optimizing Search Engines using Clickthrough Data  

E-print Network

This paper presents an approach to automatically optimizing the retrieval quality of search engines using clickthrough data. Intuitively, a good information retrieval system should present relevant documents high in the ranking, with less relevant documents following below. While previous

Thorsten Joachims

2002-01-01

99

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

100

Using Advanced Search Operators on Web Search Engines.  

ERIC Educational Resources Information Center

Studies show that the majority of Web searchers enter extremely simple queries, so a reasonable system design approach would be to build search engines to compensate for this user characteristic. One hundred representative queries were selected from the transaction log of a major Web search service. These 100 queries were then modified using the…

Jansen, Bernard J.

101

A demo search engine for products  

Microsoft Academic Search

Most product search engines today build on models of relevance devised for information retrieval. However, the decision mechanism that underlies the process of buying a product is different than the process of locating relevant documents or objects. We propose a theory model for product search based on expected utility theory from economics. Specifically, we propose a ranking technique in which

Beibei Li; Anindya Ghose; Panagiotis G. Ipeirotis

2011-01-01

102

What Flavor Is Your Internet Search Engine?  

ERIC Educational Resources Information Center

Discusses how search engines (1) select content: human/automated, selective/comprehensive, subject/open category, electronic/print, and peer-reviewed/or not; (2) compile information: human/automated, filtered/unfiltered, peer-reviewed/or not, and evaluation/review added/or not; and (3) search: keyword, Boolean/proximity operators, limit to…

Brandt, D. Scott

1997-01-01

103

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

104

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 paper, we investigate new shape-based search methods. The key challenges are to develop query methods simple enough for novice users and

Thomas Funkhouser; Patrick Min; Misha Kazhdan; Joyce Chen; Alex Halderman; David Dobkin; David Jacobs

2002-01-01

105

Modeling in Microwave Power Engineering: Methods & Applications  

E-print Network

antenna), import/export of files, control over QW operations from MATLAB, modeling of moving objectsModeling in Microwave Power Engineering: Methods & Applications A Part of the Graduate Course and processes in microwave power engineering and shows what modern advanced simulation can bring to engineers

Yakovlev, Vadim

106

Transporting submarine engines to power the PRT  

NASA Technical Reports Server (NTRS)

The city of Hampton was unable to supply adequate electric power to operate the PRT. Navy Captain Walter S. Diehl, Bureau of Aeronautics, acquired two 1000 hp submarine engines which were to be disposed of. BuAer 'loaned' the engines to the NACA, one of which is shown here. Next to the engine is Donald H. Wood, a mechanical engineer from Rensselaer Polytechnic Institute and Fred Weick's assistant. Propeller Research Tunnel (PRT) engineer Donald H. Wood ponders the unlikely transfer of a submarine engine from rail car to NACA truck, May 1926. Two such diesel engines powered the PRT.

1926-01-01

107

Search Engines for Tomorrow's Scholars  

ERIC Educational Resources Information Center

Today's scholars face an outstanding array of choices when choosing search tools: Google Scholar, discipline-specific abstracts and index databases, library discovery tools, and more recently, Microsoft's re-launch of their academic search tool, now dubbed Microsoft Academic Search. What are these tools' strengths for the emerging needs of…

Fagan, Jody Condit

2011-01-01

108

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

109

An Exploratory Survey of Student Perspectives Regarding Search Engines  

ERIC Educational Resources Information Center

This study explored college students' perceptions regarding their use of search engines. The main objective was to determine how frequently students used various search engines, whether advanced search features were used, and how many search engines were used. Various factors that might influence student responses were examined. Results showed…

Alshare, Khaled; Miller, Don; Wenger, James

2005-01-01

110

Automated Evaluation of Search Engine Performance via Implicit User Feedback  

E-print Network

Automated Evaluation of Search Engine Performance via Implicit User Feedback Himanshu Sharma the information retrieval effectiveness of Web search engines can be expensive if human relevance judgments are required to evaluate search results. Using implicit user feedback for search engine evaluation provides

Jansen, James

111

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

112

LITERATURE SEARCHES A design, development, or research engineer often must search for information on  

E-print Network

Chapter 43 LITERATURE SEARCHES A design, development, or research engineer often must search on the Internet for subscribers to Engineering Information Village.5 In addition, you should search for disserta- tions. Finding the right search terms is a trial-and-error process. The database search engine maintains

113

Chemical Information in Scirus and BASE (Bielefeld Academic Search Engine)  

ERIC Educational Resources Information Center

The author sought to determine to what extent the two search engines, Scirus and BASE (Bielefeld Academic Search Engines), would be useful to first-year university students as the first point of searching for chemical information. Five topics were searched and the first ten records of each search result were evaluated with regard to the type of…

Bendig, Regina B.

2009-01-01

114

Integrated engine generator for aircraft secondary power  

NASA Technical Reports Server (NTRS)

An integrated engine-generator for aircraft secondary power generation is described. The concept consists of an electric generator located inside a turbojet or turbofan engine and both concentric with and driven by one of the main engine shafts. The electric power conversion equipment and generator controls are located in the aircraft. When properly rated, the generator serves as an engine starter as well as a source of electric power. This configuration reduces or eliminates the need for an external gear box on the engine and permits reduction in the nacelle diameter.

Secunde, R. R.

1972-01-01

115

SAVVYSEARCH: A Metasearch Engine That Learns Which Search Engines to Query  

Microsoft Academic Search

Search engines are among the most successful applications on the Web today. Somany search engines have been created that it is difficult for users to know wherethey are, how to use them and what topics they best address. Meta-search enginesreduce the user burden by dispatching queries to multiple search engines in parallel.The SavvySearch meta-search engine is designed to efficiently query

Adele E. Howe; Daniel Dreilinger

1997-01-01

116

An empirical analysis of sponsored search performance in search engine advertising  

Microsoft Academic Search

The phenomenon of sponsored search advertising - where advertisers pay a fee to Internet search engines to be displayed alongside organic (non-sponsored) web search results - is gaining ground as the largest source of revenues for search engines. Despite the growth of search advertising, we have little understanding of how consumers respond to contextual and sponsored search advertising on the

Anindya Ghose; Sha Yang

2008-01-01

117

Essays on search, search engine and search-based advertising  

Microsoft Academic Search

This thesis consists of two essays analyzing related topics. The first essay investigates the role of search cost in electronic markets. It is the first to introduce product specificity to a search model which allows us to study both short term and long term effects of reducing search cost. It shows that in a search model with product specificity, when

Liang Yu

2005-01-01

118

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

119

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

120

BIDDING PATTERNS IN SEARCH ENGINE AUCTIONS  

Microsoft Academic Search

This study analyzes how advertisers bid for search phrases in pay-per-click search engine auctions. These auctions are fundamentally different than traditional auctions in that they have no closing times and they are continuous. We develop an infinite horizon alternative-move game of advertiser bidding behavior. We show that bidding war cycle and static bid patterns frequently observed in these auctions can

KURSAD ASDEMIR

2006-01-01

121

Contingency power concepts for helicopter turboshaft engine  

NASA Technical Reports Server (NTRS)

Twin helicopter engines are often sized by power requirement of safe mission completion after the failure of one of the two engines. This study was undertaken for NASA Lewis by General Electric Co. to evaluate the merits of special design features to provide a 2-1/2 minute Contingency Power rating, permitting an engine size reduction. The merits of water injection, cooling flow modulation, throttle push and an auxiliary power plant were evaluated using military life cycle cost (LCC) and commercial helicopter direct operating cost (DOC) merit factors in a rubber engine/rubber aircraft scenario.

Hirschkron, R.; Davis, R. H.; Goldstein, D. N.; Haynes, J. F.; Gauntner, J. W.

1984-01-01

122

Real Users, Real Trips, and Real Queries: An Analysis of Destination Search on a Search Engine  

Microsoft Academic Search

With the tremendous amount of online travel information, search engines have become the premier way for finding relevant travel product and for planning trips. Through search engine marketing, tourism marketers can reach potential travelers by positioning themselves on the top of search engine results or buying keywords for top advertising positions. This paper analyzed keywords used in destination searches on

Stephen W. Litvin; Heather Goldman

123

How are we searching the World Wide Web? A comparison of nine search engine transaction logs  

Microsoft Academic Search

The Web and especially major Web search engines are essential tools in the quest to locate online information for many people. This paper reports results from research that examines characteristics and changes in Web searching from nine studies of five Web search engines based in the US and Europe. We compare interactions occurring between users and Web search engines from

Bernard J. Jansen; Amanda Spink

2006-01-01

124

Experiences with Selecting Search Engines using MetaSearch Daniel Dreilinger  

E-print Network

Experiences with Selecting Search Engines using Meta­Search Daniel Dreilinger MIT Media Laboratory contained in this document has not been submitted for publication elsewhere. Abstract Search engines on the Internet has been replaced with the problem of knowing where search engines are, what they are designed

Howe, Adele E.

125

How are we searching the World Wide Web? A comparison of nine search engine transaction logs  

E-print Network

How are we searching the World Wide Web? A comparison of nine search engine transaction logs major Web search engines are essential tools in the quest to locate online information for many people studies of five Web search engines based in the US and Europe. We compare interactions occurring between

Jansen, James

126

Some components of search engines that rank search results need periodic "tune-ups" when  

E-print Network

24 Some components of search engines that rank search results need periodic "tune-ups" when the environment changes. An exception is the search engine Osmot, developed by CS professor Thorsten Joachims, their decisions provide the search engine with training data. The system can leverage user skills to improve

Keinan, Alon

127

Sponsored Search Engines in Competition: Advertisers Behavior and Engines Optimal Ranking  

E-print Network

Sponsored Search Engines in Competition: Advertisers Behavior and Engines Optimal Ranking.Tuffin@inria.fr Abstract--Search engines are essential actors for web browsing. We analyze here the economic competition between search engines earning money from adword auctions. We develop a two- level game where

Paris-Sud XI, Université de

128

Taming the Information Jungle with WWW Search Engines.  

ERIC Educational Resources Information Center

Because searching the Web with different engines often produces different results, the best strategy is to learn how each engine works. Discusses comparing search engines; qualities to consider (ease of use, relevance of hits, and speed); and six of the most popular search tools (Yahoo, Magellan. InfoSeek, Alta Vista, Lycos, and Excite). Lists…

Repman, Judi; And Others

1997-01-01

129

Search Engine-Crawler Symbiosis: Adapting to Community Interests  

Microsoft Academic Search

Web crawlers have been used for nearly a decade as a search engine component to create and update large collections of documents. Typically the crawler and the rest of the search engine are not closely integrated. If the purpose of a search engine is to have as large a collec- tion as possible to serve the general Web community, a

Gautam Pant; Shannon Bradshaw; Filippo Menczer

2003-01-01

130

Search Engine-Crawler Symbiosis: Adapting to Community Interests  

E-print Network

Search Engine-Crawler Symbiosis: Adapting to Community Interests Gautam Pant, Shannon Bradshaw-pant,shannon-bradshaw,filippo-menczer}@uiowa.edu Abstract. Web crawlers have been used for nearly a decade as a search engine component to create and update large collections of documents. Typically the crawler and the rest of the search engine are not closely

Bradshaw, Shannon

131

Mining Test Oracles of Web Search Engines Wujie Zheng1  

E-print Network

Mining Test Oracles of Web Search Engines Wujie Zheng1 , Hao Ma2 , Michael R. Lyu1 , Tao Xie3}@cse.cuhk.edu.hk, haoma@microsoft.com, xie@csc.ncsu.edu Abstract--Web search engines have major impact in people's everyday life. It is of great importance to test the retrieval effectiveness of search engines. However

Xie, Tao

132

Optimizing Search Engines using Clickthrough Data Thorsten Joachims  

E-print Network

Optimizing Search Engines using Clickthrough Data Thorsten Joachims Cornell University Department to automatically optimiz- ing the retrieval quality of search engines using clickthrough data. Intuitively, a good for training, namely the query-log of the search engine in connection with the log of links the users clicked

Keinan, Alon

133

Agglomerative clustering of a search engine query log  

Microsoft Academic Search

This paper introduces a technique for mining a collection ofuser transactions with an Internet search engine to discoverclusters of similar queries and similar URLs. The informationwe exploit is "clickthrough data": each record consistsof a user's query to a search engine along with the URLwhich the user selected from among the candidates offeredby the search engine. By viewing this dataset as

Doug Beeferman; Adam L. Berger

2000-01-01

134

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 activity is reading and writing email. Search engine use is next in line and continues to increase in popularity. In fact, survey findings indicate that nearly 60 million American adults use search engines

Lakoba, Taras I.

135

Towards A Next-Generation Search Engine Qiang Yang1  

E-print Network

Towards A Next-Generation Search Engine Qiang Yang1 , Hai-Feng Wang, Ji-Rong Wen, Gao Zhang, Ye Lu generations of search engines are mainly keyword-based and cannot satisfy many informational needs. In this paper, we describe the system architecture of a next-generation search engine that we have built

Wang, Haifeng

136

Modeling Score Distributions for Combining the Outputs of Search Engines  

E-print Network

Modeling Score Distributions for Combining the Outputs of Search Engines R. Manmatha, T. Rath and F fits TREC-3 and TREC-4 data for not only probabilistic search engines like INQUERY but also vector space search engines like SMART for English. We have also used this model to fit the output of other

Massachusetts at Amherst, University of

137

Efficient Search Engine Measurements Ziv Bar-Yossef  

E-print Network

Efficient Search Engine Measurements Ziv Bar-Yossef Maxim Gurevich July 18, 2010 Abstract We address the problem of externally measuring aggregate functions over documents indexed by search engines for reducing vari- ance in search engine estimators. We show that Rao-Blackwellizing our estimators results

Bar-Yossef, Ziv

138

The impact of search engine optimization on online advertising market  

Microsoft Academic Search

Online advertising market is becoming a popular area of academic research. Among other types of advertising, search engine advertising is leading the growth in terms of revenue. In general, there are two types of search engine advertising: paid placement and search engine optimization (SEO). This study aims to analyze the condition under which SEO exist and further, its impact on

Bo Xing; Zhangxi Lin

2006-01-01

139

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

140

Advertising on a search engine: how to target consumers?  

Microsoft Academic Search

Firms' ability to target consumers has increased thanks notably to the re- cent development of search engines. This paper studies the eects of targeted advertising through a search engine when products are dierentiated, product information is imperfect and consumers incur search costs. In this framework, it is shown that targeting benefits consumers through three channels: better product-to-consumer matching, less search

Alexandre de Corniere

141

Onto TEMAS: an ontology-based teaching materials search engine  

Microsoft Academic Search

This vision paper describes an effort to develop Onto TEMAS, an Ontology-based TEaching MAterials Search engine. This special purpose search engine combines statistical and semantic search methods to provide a central search interface and directory for educators who wish to distribute, share and find curriculum and course preparation materials. Onto TEMAS uses an educational materials ontology to crawl the Web

Yuri A. Tijerino; Reza Sanati

2005-01-01

142

Context-aware Querying for Multimodal Search Engines  

E-print Network

Context-aware Querying for Multimodal Search Engines Jonas Etzold1 , Arnaud Brousseau2 , Paul Grimm, and the design of search engines, and also raises the need for extending search tasks beyond textual queries and output of data. In this paper, we present our work in the context of the I-SEARCH project, which aims

Cortes, Corinna

143

Meta Search Engine for Searching Multiple Human Rights Sites  

NSDL National Science Digital Library

Recently unveiled by the Human Rights Library of the University of Minnesota (originally reviewed in the January 5, 1996 Scout Report), this new search engine will be welcomed by researchers and activists in human rights. Searchable by keyword and several optional operators (Boolean, proximity, truncation), the engine retrieves data from any or all of the 23 different rights-related sites that users select. Interestingly, returns are presented "as is" from the source pages (with page header, images, and unique formats) but combined into a single results page. A test search for "Northern Ireland" on four selected sites returned over 40 results. Direct links to the featured databases and, in some cases, their search tips pages are also provided.

144

Visual search engine for product images  

NASA Astrophysics Data System (ADS)

Nowadays there are many product comparison web sites. But most of them only use text information. This paper introduces a novel visual search engine for product images, which provides a brand-new way of visually locating products through Content-based Image Retrieval (CBIR) technology. We discusses the unique technical challenges, solutions, and experimental results in the design and implementation of this system.

Lin, Xiaofan; Gokturk, Burak; Sumengen, Baris; Vu, Diem

2008-01-01

145

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

146

Clustering user queries of a search engine  

Microsoft Academic Search

In order to increase retrieval precision, some new search engines provide manually verified answers to Frequently Asked Queries (FAQs). An underlying task is the identification of FAQs. This paper describes our attempt to cluster similar queries according to their contents as well as user logs. Our preliminary results show that the resulting clusters provide useful information for FAQ identification.

Ji-Rong Wen; Jian-Yun Nie; Hong-Jiang Zhang

2001-01-01

147

XSEarch: A Semantic Search Engine for XML  

Microsoft Academic Search

XSEarch, a semantic search engine for XML, is presented. XSEarch has a simple query lan- guage, suitable for a naive user. It returns se- mantically related document fragments that satisfy the user's query. Query answers are ranked using extended information-retrieval techniques and are generated in an order sim- ilar to the ranking. Advanced indexing tech- niques were developed to facilitate

Sara Cohen; Jonathan Mamou; Yaron Kanza; Yehoshua Sagiv

2003-01-01

148

Optimizing search engines using clickthrough data  

Microsoft Academic Search

This paper presents an approach to automatically optimizing the retrieval quality of search engines using clickthrough data. Intuitively, a good information retrieval system should present relevant documents high in the ranking, with less relevant documents following below. While previous approaches to learning retrieval functions from examples exist, they typically require training data generated from relevance judgments by experts. This makes

Thorsten Joachims

2002-01-01

149

Research Trends with Cross Tabulation Search Engine  

ERIC Educational Resources Information Center

To help researchers in building a knowledge foundation of their research fields which could be a time-consuming process, the authors have developed a Cross Tabulation Search Engine (CTSE). Its purpose is to assist researchers in 1) conducting research surveys, 2) efficiently and effectively retrieving information (such as important researchers,…

Yin, Chengjiu; Hirokawa, Sachio; Yau, Jane Yin-Kim; Hashimoto, Kiyota; Tabata, Yoshiyuki; Nakatoh, Tetsuya

2013-01-01

150

Quality Dimensions of Internet Search Engines.  

ERIC Educational Resources Information Center

Reviews commonly used search engines (AltaVista, Excite, infoseek, Lycos, HotBot, WebCrawler), focusing on existing comparative studies; considers quality dimensions from the customer's point of view based on a SERVQUAL framework; and groups these quality expectations in five dimensions: tangibles, reliability, responsiveness, assurance, and…

Xie, M.; Wang, H.; Goh, T. N.

1998-01-01

151

MetaSEEk: A Content-Based Meta-Search Engine for Images Mandis Beigi, Ana B. Benitez, and Shih-Fu Chang*  

E-print Network

MetaSEEk: A Content-Based Meta-Search Engine for Images Mandis Beigi, Ana B. Benitez, and Shih, NY 10027 ABSTRACT Search engines are the most powerful resources for finding information on the rapidly expanding World Wide Web (WWW). Finding the desired search engines and learning how to use them

Chang, Shih-Fu

152

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

153

Web Feet Guide to Search Engines: Finding It on the Net.  

ERIC Educational Resources Information Center

This guide to search engines for the World Wide Web discusses selecting the right search engine; interpreting search results; major search engines; online tutorials and guides; search engines for kids; specialized search tools for various subjects; and other specialized engines and gateways. (LRW)

Web Feet, 2001

2001-01-01

154

Initial tests of thermoacoustic space power engine.  

SciTech Connect

Future NASA deep-space missions will require radioisotope-powered electric generators that are just as reliable as current RTGs, but more efficient and of higher specific power (Wikg). Thennoacoustic engines at the -1-kW scale have converted high-temperature heat into acoustic, or PV, power without moving parts at 30% efficiency. Consisting of only tubes and a few heat exchangers, thennoacoustic engines are low mass and promise to be highly reliable. Coupling a thennoacoustic engine to a low mass, highly reliable and efficient linear alternator will create a heat-driven electric generator suitable for deep-space applications. Conversion efficiency data will be presented on a demonstration thennoacoustic engine designed for the 1 00-Watt power range.

Backhaus, S. N. (Scott N.)

2002-01-01

155

Image Comparison Search Engine Based On Traditional and Improved Fractal Encoding Techniques  

Microsoft Academic Search

This search engine allows users to quickly obtain information from networks. Traditional search engines can only search the data of modal characters. To solve this problem, Image Comparison Search Engine (ICSE) makes use of \\

Shraddha Viraj Pandit; M. V. Kulkarni; M. L. Dhore

2009-01-01

156

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

157

Using MATHCAD in teaching power engineering  

Microsoft Academic Search

Students typically use small calculators or personal computer applications such as MATLAB or MATHCAD to perform basic electrical engineering calculations. From the experience of teaching several power engineering courses, the author noted that when using computer software to solve problems, students tend to lose the meaning of the equations, concentrating solely on typing variables and numbers. Some programs are especially

Cristian Domnisoru

2005-01-01

158

The Infocious Web Search Engine: Improving Web Searching through Linguistic Analysis  

E-print Network

Web search engines as the primary (and oftentimes the sole) means for locating relevant issues a query, search engines go through their enormous repository and identify the most relevant stemming) in order to identify the pages relevant to the query. In addition, search engines often exploit

Cho, Junghoo "John"

159

An Empirical Analysis of Search Engine Advertising: Sponsored Search and Cross-Selling in Electronic Markets  

Microsoft Academic Search

The phenomenon of sponsored search advertising where advertisers pay a fee to Internet search engines to be displayed alongside organic (non-sponsored) web search results is gaining ground as the largest source of revenues for search engines. Using a unique panel dataset of several hundred keywords collected from a large nationwide retailer that advertises on Google, we empirically model the relationship

Anindya Ghose; Sha Yang

2007-01-01

160

Rethinking Search Engines in Social Network Vision  

Microsoft Academic Search

\\u000a In this chapter we illustrate our vision about the evolution of search engines, dealing with some emerging questions related\\u000a to the social role of the user on the Web and to the actual approach to access the information. In this scenario, is ever\\u000a more evident the need to redefine the information paradigm bringing the information to the user and not

Manuela Angioni; Emanuela De Vita; Cristian Lai; Ivan Marcialis; Gavino Paddeu; Franco G. Tuveri

161

User-centric content freshness metrics for search engines  

Microsoft Academic Search

In order to return relevant search results, a search engine must keep its local repository synchronized to the Web, but it is usually impossible to attain perfect freshness. Hence, it is vital for a production search engine continually to moni- tor and improve repository freshness. Most previous fresh- ness metrics, formulated in the context of developing better synchronization policies, focused

Ali Dasdan; Xinh Huynh

2009-01-01

162

Design and Implementation of a Geographic Search Engine  

Microsoft Academic Search

In this paper, we describe the design and initial implementation of a geographic search engine prototype for Germany, based on a large crawl of the de domain. Geographic search engines provide a flex- ible interface to the Web that allows users to constrain and order search results in an intuitive manner, by focusing a query on a par- ticular geographic

Alexander Markowetz; Yen-yu Chen; Torsten Suel; Xiaohui Long; Bernhard Seeger

2005-01-01

163

Progress in Documentation: The Evaluation of WWW Search Engines.  

ERIC Educational Resources Information Center

Reviews the literature on Web search engines evaluation, with the aim of identifying some of the issues and problems in this rapidly changing field. Suggests that a standardized set of tools be developed for the evaluation of search engines so comparisons can be made between them more effectively and variations in performance of any given search

Oppenheim, C.; Morris, A.; McKnight, C.; Lowley, S.

2000-01-01

164

Predictive caching and prefetching of query results in search engines  

Microsoft Academic Search

We study the caching of query result pages in Web search engines. Popular search engines receive millions of queries per day, and efficient policies for caching query results may enable them to lower their response time and reduce their hardware requirements. We present PDC (probability driven cache), a novel scheme tailored for caching search results, that is based on a

Ronny Lempel; Shlomo Moran

2003-01-01

165

Query Recommendation Using Query Logs in Search Engines  

Microsoft Academic Search

In this paper we propose a method that, given a query sub- mitted to a search engine, suggests a list of related queries. The related queries can be issued by the user to the search engine to tune or redirect the search process. The method proposed is based on a query clustering process in which groups of semantically similar queries

Ricardo A. Baeza-yates; Carlos A. Hurtado; Marcelo Mendoza

2004-01-01

166

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

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false Airplanes: Turbine engine powered: En route limitations...Limitations § 121.193 Airplanes: Turbine engine powered: En route limitations... (SR 422). No person may operate a turbine engine powered airplane along an...

2010-01-01

167

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 limitations...Limitations § 121.191 Airplanes: Turbine engine powered: En route limitations...inoperative. (a) No person operating a turbine engine powered airplane may...

2010-01-01

168

Power of a Finite Speed Carnot Engine  

ERIC Educational Resources Information Center

A model of an endoreversible Carnot engine is considered where the piston moves with a constant speed "u." Expressions for the cycle time [tau] for the four branches, as well as output power, P[subscript W], are derived and the optimized root for maximum power is obtained in closed form. Our results are discussed in terms of the isothermal…

Agrawal, D. C.; Menon, V. J.

2009-01-01

169

Thermal power installation for a water engine  

NASA Astrophysics Data System (ADS)

We present the main principles for developing a water-jet thermal power installation that uses a propeller operating on jet thrust developed during the flashing of metastable water. The considerable advantages of using the proposed thermal power installation as a water jet propeller over existing marine engines constructed on the basis of screw propellers are shown.

Khlestkin, D. A.; Vinogradov, A. V.

2009-11-01

170

Power lever apparatus for a turbine engine  

SciTech Connect

In a turbine engine having a compressor with a bleed valve and a variable geometry apparatus is responsive to an operational control member for regulating the flow rate of fuel supplied the turbine engine as a function of atmospheric pressure and the temperature of air supplied to the compressor corresponding to movement of a power lever by an operator to a desired operation of the turbine engine. The power lever has an indicator member fluidically connected to a follower member linked to the operational control member. The fluidic connection is responsive to operational parameters of the turbine engine and limits the rotational input to the follower member when the rate of fuel flow could cause stalling and the development of an unacceptable operating temperature or overspeed condition in the turbine engine.

McCombs Jr., H. L.

1985-05-21

171

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

172

Query by analogical example: relational search using web search engine indices  

Microsoft Academic Search

We describe methods to search with a query by example in a known domain for information in an unknown domain by exploiting Web search engines. Relational search is an effective way to obtain information in an unknown field for users. For example, if an Apple user searches for Microsoft products, similar Apple products are important clues for the search. Even

Makoto P. Kato; Hiroaki Ohshima; Satoshi Oyama; Katsumi Tanaka

2009-01-01

173

The design and realization of open-source search engine based on Nutch  

Microsoft Academic Search

Search engines nowadays are becoming more and more necessary and popular in surfing the Internet. However, how these search engines like Google or Baidu works is unknown to many people. This paper, through a research into Open-source search engine Nutch, introduces how a common search engine works. By using Nutch, a search engine which belongs to Guizhou Normal University's website

Guojun Yu; Xiaoyao Xie; Zhijie Liu

2010-01-01

174

Search Engine-Crawler Symbiosis: Adapting to Community Interests  

Microsoft Academic Search

\\u000a Web crawlers have been used for nearly a decade as a search engine component to create and update large collections of documents.\\u000a Typically the crawler and the rest of the search engine are not closely integrated. If the purpose of a search engine is to\\u000a have as large a collection as possible to serve the general Web community, a close

Gautam Pant; Shannon Bradshaw; Filippo Menczer

175

Building Domain-Specific Search Engines with Machine Learning Techniques  

Microsoft Academic Search

Domain-specific search engines are growing in popu- larity because they offer increased accuracy and extra functionality not possible with the general, Web-wide search engines. For example, www.campsearch.com allows complex queries by age-group, size, location and cost over .summer camps. Unfortunately these domain-specific search engines are difficult and time- consuming to maintain. This paper proposes the use of machine learning techniques

Andrew McCallum; Kamal Nigam; Jason Rennie; Kristie Seymore

1999-01-01

176

KU Librarian Amalia Monroe develops presidential election search engine  

E-print Network

12/5/13 KU Libraries News: KU Librarian Amalia Monroe develops presidential election search engine www.lib.ku.edu/news/pressearchengine.shtml 1/1 Contact Us Rebecca Smith Director of Communications & Advancement KU Libraries Lawrence, Kansas 66045... to a new KU Libraries search engine. Created by KU Librarian Amalia Monroe, the 2008 Presidential Election Custom Search Engine brings together more than 150 political Web sites selected for their quality, content and non-partisanship. Monroe, who also...

2008-05-06

177

ProFusion*: Intelligent Fusion from Multiple, Distributed Search Engines  

Microsoft Academic Search

The explosive growth of the World Wide Web, and the resulting information overload, has led to a mini-explosion in World Wide Web search engines. This mini-explosion, in turn, led to the development of ProFusion, a meta search engine. Educators, like other users, do not have the time to evaluate multiple search engines to knowledgeably select the best for their uses.

Susan Gauch; Guijun Wang; Mario Gomez

1996-01-01

178

Mashup Based Content Search Engine for Mobile Devices  

Microsoft Academic Search

Mashup based content search engine for mobile devices is proposed. Example of the proposed search engine is implemented with Yahoo!JAPAN Web SearchAPI, Yahoo!JAPAN Image searchAPI, YouTube Data API, and Amazon Product Advertising API. The retrieved results are also merged and linked each other. Therefore, the different types of contents can be referred once an e-learning content is retrieved. The implemented

Kohei Arai

2013-01-01

179

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

PubMed

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

1999-10-01

180

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

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Maximum engine power, displacement, power density, and maximum in-use engine speed. 1042.140 Section 1042...IN-USE MARINE COMPRESSION-IGNITION ENGINES AND VESSELS Emission Standards and...

2010-07-01

181

Department of Biomedical Engineering 2014-15 Faculty Search  

E-print Network

Department of Biomedical Engineering 2014-15 Faculty Search The Department of Biomedical Engineering in the School of Engineering and Applied Science at Washington University in St. Louis invites of Biomedical Engineering was established in 1997 and has rapidly grown to 20 faculty members, >400

von der Heydt, RĂĽdiger

182

Combining Results of Multiple Search Engines in Proteomics*  

PubMed Central

A crucial component of the analysis of shotgun proteomics datasets is the search engine, an algorithm that attempts to identify the peptide sequence from the parent molecular ion that produced each fragment ion spectrum in the dataset. There are many different search engines, both commercial and open source, each employing a somewhat different technique for spectrum identification. The set of high-scoring peptide-spectrum matches for a defined set of input spectra differs markedly among the various search engine results; individual engines each provide unique correct identifications among a core set of correlative identifications. This has led to the approach of combining the results from multiple search engines to achieve improved analysis of each dataset. Here we review the techniques and available software for combining the results of multiple search engines and briefly compare the relative performance of these techniques. PMID:23720762

Shteynberg, David; Nesvizhskii, Alexey I.; Moritz, Robert L.; Deutsch, Eric W.

2013-01-01

183

Engineering aspects of demonstration fusion power reactors  

Microsoft Academic Search

Conceptual design study of a demonstration power reactor plant (FINTOR-D), of tokamak-type, is reviewed. FINTOR-D is defined as a full fusion plant generating electric power, able to demonstrate the feasibility of all the technologies required for a prototype reactor station. The study objective is to assess the principal physical and engineering limits connected with varying levels of capability of experimental

M. Biggio; G. Casini; F. Farfaletti-Casali; F. Lanza; R. Matera; G. Pierini; C. Ponti; F. W. Reiter; M. Rieger; P. Rocco

1979-01-01

184

Shuttle Engine Designs Revolutionize Solar Power  

NASA Technical Reports Server (NTRS)

The Space Shuttle Main Engine was built under contract to Marshall Space Flight Center by Rocketdyne, now part of Pratt & Whitney Rocketdyne (PWR). PWR applied its NASA experience to solar power technology and licensed the technology to Santa Monica, California-based SolarReserve. The company now develops concentrating solar power projects, including a plant in Nevada that has created 4,300 jobs during construction.

2014-01-01

185

Implementing Sponsored Search in Web Search Engines: Computational Evaluation of Alternative Mechanisms  

E-print Network

@yahoo-inc.com The practice of sponsored search advertising--where advertisers pay a fee to appear alongside particular Web; today, In- ternet statistics indicate that the publicly indexable Web contains billions of pages, served on the Web were initiated via search engines. For us, the term search engine encompasses various applications

Pennock, David M.

186

Automated Power Assessment for Helicopter Turboshaft Engines  

NASA Technical Reports Server (NTRS)

An accurate indication of available power is required for helicopter mission planning purposes. Available power is currently estimated on U.S. Army Blackhawk helicopters by performing a Maximum Power Check (MPC), a manual procedure performed by maintenance pilots on a periodic basis. The MPC establishes Engine Torque Factor (ETF), an indication of available power. It is desirable to replace the current manual MPC procedure with an automated approach that will enable continuous real-time assessment of available power utilizing normal mission data. This report presents an automated power assessment approach which processes data currently collected within helicopter Health and Usage Monitoring System (HUMS) units. The overall approach consists of: 1) a steady-state data filter which identifies and extracts steady-state operating points within HUMS data sets; 2) engine performance curve trend monitoring and updating; and 3) automated ETF calculation. The algorithm is coded in MATLAB (The MathWorks, Inc.) and currently runs on a PC. Results from the application of this technique to HUMS mission data collected from UH-60L aircraft equipped with T700-GE-701C engines are presented and compared to manually calculated ETF values. Potential future enhancements are discussed.

Simon, Donald L.; Litt, Jonathan S.

2008-01-01

187

Searching for a New Way to Reach Patrons: A Search Engine Optimization Pilot Project at Binghamton University Libraries  

ERIC Educational Resources Information Center

Search engine use is one of the most popular online activities. According to a recent OCLC report, nearly all students start their electronic research using a search engine instead of the library Web site. Instead of viewing search engines as competition, however, librarians at Binghamton University Libraries decided to employ search engine

Rushton, Erin E.; Kelehan, Martha Daisy; Strong, Marcy A.

2008-01-01

188

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

189

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

190

Grooker, KartOO, Addict-o-Matic and More: Really Different Search Engines  

ERIC Educational Resources Information Center

There are hundreds of unique search engines in the United States and thousands of unique search engines around the world. If people get into search engines designed just to search particular web sites, the number is in the hundreds of thousands. This article looks at: (1) clustering search engines, such as KartOO (www.kartoo.com) and Grokker…

Descy, Don E.

2009-01-01

191

On the Precision of Search Engines: Results from a Controlled Experiment  

E-print Network

On the Precision of Search Engines: Results from a Controlled Experiment Hasan Girit, Robert, search engines adopt a key role. Besides conventional search engines such as Google, semantic search engines have emerged as an alternative approach in recent years. The quality of search results delivered

Ulm, Universität

192

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

E-print Network

A 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 closeness and probabilis­ tic similarity between query terms. In addition, the search engine visualizes

Zhai, ChengXiang

193

Brief Report: Consistency of Search Engine Rankings for Autism Websites  

ERIC Educational Resources Information Center

The World Wide Web is one of the most common methods used by parents to find information on autism spectrum disorders and most consumers find information through search engines such as Google or Bing. However, little is known about how the search engines operate or the consistency of the results that are returned over time. This study presents the…

Reichow, Brian; Naples, Adam; Steinhoff, Timothy; Halpern, Jason; Volkmar, Fred R.

2012-01-01

194

The dynamics of competition in the internet search engine market  

Microsoft Academic Search

Search engines hold the key to helping consumers access the wealth of information on the web. In this paper I examine the evolution of and competition in the internet search engine market. The goal of my analysis is to examine whether early entrants benefit in the long run from their first-mover position in internet markets. I find that while early

Neil Gandal

2001-01-01

195

The Search Engine as an Internet Service Channel  

Microsoft Academic Search

Development of the search engine as a major information and marketing channel resulted from innovative technologies that made it capable of presenting rapid, relevant responses to queries. To do this, the search engine compiles an index of web pages of information stored on the World Wide Web, ranks each page according to its incoming links, matches keywords in the query

Leslie S. Hiraoka

2010-01-01

196

The Dynamics of Competition in the Internet Search Engine Market  

Microsoft Academic Search

Search engines hold the key to helping consumers access the wealth of information on the web. In this paper I examine the evolution of and competition in the internet search engine market. The goal of my analysis is to examine whether early entrants benefit in the long-run from their first-mover position in internet markets. I find that while early entrants

Neil Gandal

2000-01-01

197

Automated Price Comparison Shopping Search Engine PriceHunter  

Microsoft Academic Search

In this paper, we explore the possibility of creating a product search engine that is able to dynamically find commercial sites, independent of merchant feeds and other human involvement in the management of internal databases. We evaluate briefly the constraints of current shopping search engines and the benefits of offering a fully automated version. In addition, we consider the application

Elwin Chai; Rick Jones

198

Evaluation and comparison of search engines using the LSP method  

Microsoft Academic Search

We present a comprehensive model for quantitative evaluation and comparison of search engines. The model is based on the LSP method for system evaluation. The basic contribution of our approach is the aggregation of all relevant attributes that reflect functionality, usability, and performance of search engines. In this respect our model is fully consistent with the ISO 9126 standard for

Jozo J. Dujmovic; Haishi Bai

2006-01-01

199

Search engines and the production of academic knowledge  

Microsoft Academic Search

• This article argues that search engines in general, and Google Scholar in particular, have become significant co-producers of academic knowledge. Knowledge is not simply conveyed to users, but is co-produced by search engines’ ranking systems and profiling systems, none of which are open to the rules of transparency, relevance and privacy in a manner known from library scholarship in

José van Dijck

2010-01-01

200

Analyzing and Tuning User Queries to Search Engines  

Microsoft Academic Search

There are certain situations when a web site's visitor using a search engine as a referrer will not be correctly redirected to the desired product or information page, although such a page exists within the web site. This paper presents a solution for a web site to locally further analyze and tune user queries to search engines in order to

DARIUS BUFNEA

2012-01-01

201

Locality in Search Engine Queries and Its Implications for Caching  

Microsoft Academic Search

Caching is a popular technique for reducing both server load and user response time in dis- tributed systems. In this paper, we are interested in the question of whether caching might be effective for search engines as well. We study two real search engine traces by examining query locality and its implications for caching. Our trace analysis results show that:

Yinglian Xie; David R. O'hallaron

2002-01-01

202

Methods for Measuring Search Engine Performance over Time.  

ERIC Educational Resources Information Center

Introduces methods for evaluating Web search engine performance over a time period. Describes the necessary setup for such studies, illustrates the use of these measures through a specific example, and recommends the use of the measures as a guideline for testing and improving search engine functionality. (Author/LRW)

Bar-Ilan, Judit

2002-01-01

203

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

204

Exploring Independent Trends in a Topic-Based Search Engine  

E-print Network

. The temporal behaviour of the topics in a topic model based search engine can be used for trend analysis, which, as we pursue here. In trend analysis we are interested in the temporal behaviour of the topic variablesExploring Independent Trends in a Topic-Based Search Engine Jukka Perki¨o, Wray Buntine and Sami

Myllymäki, Petri

205

Engineering manual and electric powered wheelchairs.  

PubMed

The sophistication required to develop and properly configure a wheelchair is illustrated by the amount and complexity of the research being conducted. At this time there appears to be between 1.5 and 2.0 million full-time wheelchair users within the United States. The reliance of the user on the wheelchair and the amount of time in the wheelchair provide significant challenges for the wheelchair design engineer. Currently there are a wide variety of wheelchair designs that are commercially available. These wheelchairs accommodate a variety of people's needs, and represent significant progress. The current trend among manufacturers of manual wheelchairs seems to be cost-reduction engineering. The ergonomics of long-term wheelchair use are critical to the advancement of wheelchair design and to the clinical selection of wheelchairs. Electric powered wheelchairs appear to be progressing faster than nearly all other types of wheelchairs. This is due to the availability of computing power with low cost microcontrollers and associated peripherals. The greater range and availability of sensors are also making changes into the design of electric powered wheelchairs. The interaction between an electric powered wheelchair and the user can be extremely complex. In many cases, individual solutions are necessary. One of the more challenging questions is determining the abilities of the user required to drive an electric powered wheelchair effectively. There have been substantial improvements in the engineering of all wheelchairs. However, there remain significant issues to be addressed. PMID:10638849

Cooper, R A

1999-01-01

206

How To Do Field Searching in Web Search Engines: A Field Trip.  

ERIC Educational Resources Information Center

Describes the field search capabilities of selected Web search engines (AltaVista, HotBot, Infoseek, Lycos, Yahoo!) and includes a chart outlining what fields (date, title, URL, images, audio, video, links, page depth) are searchable, where to go on the page to search them, the syntax required (if any), and how field search queries are entered.…

Hock, Ran

1998-01-01

207

Analyzing the emotional outcomes of the online search behavior with search engines  

Microsoft Academic Search

The affective component has been acknowledged as critical to understand information search behavior and user–computer interactions. There is a lack of studies that analyze the emotions that the user feels when searching for information about products with search engines. The present study analyzes the emotional outcomes of the online search process, taking into account the user’s (a) perceptions of success

Carlos Flavián-Blanco; Raquel Gurrea-Sarasa; Carlos Orús-Sanclemente

2011-01-01

208

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

209

College of Engineering Dean Search Committee Meeting Notes  

E-print Network

College of Engineering Dean Search Committee Meeting Notes May 15, 2014, 11am ENB 109 Members a Search Committee meeting to explain his desired requirements and qualifications for the position. The Chair reported that the search firm is currently reaching out to recruit additional qualified applicants

Meyers, Steven D.

210

Enhanced Identification of Eligibility for Depression Research Using an Electronic Medical Record Search Engine  

PubMed Central

Purpose Electronic medical records (EMR) have become part of daily practice for many physicians. Attempts have been made to apply electronic search engine technology to speed EMR review. This was a prospective, observational study to compare the speed and accuracy of electronic search engine vs. manual review of the EMR. Methods Three raters reviewed 49 cases in the EMR to screen for eligibility in a depression study using the electronic search engine (EMERSE). One week later raters received a scrambled set of the same patients including 9 distractor cases, and used manual EMR review to determine eligibility. For both methods, accuracy was assessed for the original 49 cases by comparison with a gold standard rater. Results Use of EMERSE resulted in considerable time savings; chart reviews using EMERSE were significantly faster than traditional manual review (p=0.03). The percent agreement of raters with the gold standard (e.g. concurrent validity) using either EMERSE or manual review was not significantly different. Conclusions Using a search engine optimized for finding clinical information in the free-text sections of the EMR can provide significant time savings while preserving reliability. The major power of this search engine is not from a more advanced and sophisticated search algorithm, but rather from a user interface designed explicitly to help users search the entire medical record in a way that protects health information. PMID:19560962

Seyfried, Lisa; Hanauer, David; Nease, Donald; Albeiruti, Rashad; Kavanagh, Janet; Kales, Helen C.

2009-01-01

211

A Fuzzy-Match Search Engine for Physician Directories  

PubMed Central

Background A search engine to find physicians’ information is a basic but crucial function of a health care provider’s website. Inefficient search engines, which return no results or incorrect results, can lead to patient frustration and potential customer loss. A search engine that can handle misspellings and spelling variations of names is needed, as the United States (US) has culturally, racially, and ethnically diverse names. Objective The Marshfield Clinic website provides a search engine for users to search for physicians’ names. The current search engine provides an auto-completion function, but it requires an exact match. We observed that 26% of all searches yielded no results. The goal was to design a fuzzy-match algorithm to aid users in finding physicians easier and faster. Methods Instead of an exact match search, we used a fuzzy algorithm to find similar matches for searched terms. In the algorithm, we solved three types of search engine failures: “Typographic”, “Phonetic spelling variation”, and “Nickname”. To solve these mismatches, we used a customized Levenshtein distance calculation that incorporated Soundex coding and a lookup table of nicknames derived from US census data. Results Using the “Challenge Data Set of Marshfield Physician Names,” we evaluated the accuracy of fuzzy-match engine–top ten (90%) and compared it with exact match (0%), Soundex (24%), Levenshtein distance (59%), and fuzzy-match engine–top one (71%). Conclusions We designed, created a reference implementation, and evaluated a fuzzy-match search engine for physician directories. The open-source code is available at the codeplex website and a reference implementation is available for demonstration at the datamarsh website. PMID:25601050

Ye, Zhan; Murali, Narayana

2014-01-01

212

Persuading Consumers to Form Precise Search Engine Queries  

PubMed Central

Today’s search engines provide a single textbox for searching. This input method has not changed in decades and, as a result, consumer search behaviour has not changed either: few and imprecise keywords are used. Especially with health information, where incorrect information may lead to unwise decisions, it would be beneficial if consumers could search more precisely. We evaluated a new user interface that supports more precise searching by using query diagrams. In a controlled user study, using paper-based prototypes, we compared searching with a Google interface with drawing new or modifying template diagrams. We evaluated consumer willingness and ability to use diagrams and the impact on query formulation. Users had no trouble understanding the new search method. Moreover, they used more keywords and relationships between keywords with search diagrams. In comparison to drawing their own diagrams, modifying existing templates led to more searches being conducted and higher creativity in searching. PMID:20351879

Leroy, Gondy

2009-01-01

213

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

214

Optimal Threshold Control by the Robots of Web Search Engines with Obsolescence of Documents  

E-print Network

Optimal Threshold Control by the Robots of Web Search Engines with Obsolescence of Documents A typical Web Search Engine consists of three principal parts: crawling engine, indexing engine, and searching engine. The present work aims to optimize the performance of the crawling engine. The crawling

Paris-Sud XI, Université de

215

Heat engine development for solar thermal power systems  

Microsoft Academic Search

The parabolic dish solar collector systems for converting sunlight to electrical power through a heat engine will, require a small heat engine of high performance long lifetime to be competitive with conventional power systems. The most promising engine candidates are Stirling, high temperature Brayton, and combined cycle. Engines available in the current market today do not meet these requirements. The

H. Q. Pham; L. D. Jaffe

1981-01-01

216

Solar power satellites: The Engineering Challenges  

NASA Technical Reports Server (NTRS)

Certain elements of solar power satellite design and system engineering studies are reviewed analyzing solar power satellites as a potential baseload electric power source. The complete system concept concept includes not only the satellites and their ground stations, but also the space transportation for delivery of the satellites, piece by piece, into space, and the factories for their construction in space. Issues related to carrying the solar power satellite concept from the present design study phase through implementation of actual hardware are considered. The first issue category is environmental aspects of the SPS systems. The second category of issues is the technology risks associated with achieving the necessary component and subsystem performances. The third category includes the engineering issues associated with carrying out such a large scale project. The fourth issue category is financial: the funding required to bring such a project into being and the costs of the satellites and resulting cost of the power produced as compared to potential alternative energy sources.

Woodcock, G. R.

1978-01-01

217

Toward two-dimensional search engines  

NASA Astrophysics Data System (ADS)

We study the statistical properties of various directed networks using ranking of their nodes based on the dominant vectors of the Google matrix known as PageRank and CheiRank. On average PageRank orders nodes proportionally to a number of ingoing links, while CheiRank orders nodes proportionally to a number of outgoing links. In this way, the ranking of nodes becomes two dimensional which paves the way for the development of two-dimensional search engines of a new type. Statistical properties of information flow on the PageRank-CheiRank plane are analyzed for networks of British, French and Italian universities, Wikipedia, Linux Kernel, gene regulation and other networks. A special emphasis is done for British universities networks using the large database publicly available in the UK. Methods of spam links control are also analyzed.

Ermann, L.; Chepelianskii, A. D.; Shepelyansky, D. L.

2012-07-01

218

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

219

How to build a DNA search engine like Google?  

E-print Network

This paper presents a novel method to build the large scale DNA sequences search system based on web search engine technology. Firstly, we find 12 bp may be the length of most DNA "word" by Zipf's laws. Then the "vocabulary" of DNA was constructed by N-grams statistical model. After having a vocabulary, we could easily segment the DNA sequence, build the inverted index and provide the search services by mature search engine technology. Such system could provide the ms level search services in billions of DNA sequences. We also design a prototype DNA search engine based on Lucene This DNA statistical language model may open a new avenue to discover the secret of DNA.

Liang, Wang

2010-01-01

220

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

221

Based on the electronic commerce environment of the search engine marketing  

Microsoft Academic Search

Search engine marketing is a new kind of Internet marketing form. Search engine marketing has done is comprehensive and effective use of the search engine network marketing and promotion, its most main work is through the website optimization, make the web page at key words the top of search results, use the opportunity to search information users as far as

Zhenhai Mu

2012-01-01

222

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 with the capabilities of existing search systems. We propose Orion, an integrated search engine architecture an experiment with 10 search scenarios to compare Orion with traditional search engines, and explore the need

Paris-Sud XI, Université de

223

The Theory of Planned Behaviour Applied to Search Engines as a Learning Tool  

ERIC Educational Resources Information Center

Search engines have been developed for helping learners to seek online information. Based on theory of planned behaviour approach, this research intends to investigate the behaviour of using search engines as a learning tool. After factor analysis, the results suggest that perceived satisfaction of search engine, search engines as an information…

Liaw, Shu-Sheng

2004-01-01

224

A Comparative Study for Search Engines Business Model - Based on the Case of Baidu and Google  

Microsoft Academic Search

Due to the advantages of the search engine's business value, search engine has been rapidly developed in the network economy era. With the market competition become white-hot, search engine enterprises are facing the problem how to choose an effective business model. A search engine's business model was designed in this paper. Based on the six dimensions in business model, a

Hanpo Hou; Haibo Li; Jing Wen

2010-01-01

225

Dynamics of a macroscopic model characterizing mutualism of search engines and web sites  

Microsoft Academic Search

We present a model to describe the mutualism relationship between search engines and web sites. In the model, search engines and web sites benefit from each other while the search engines are derived products of the web sites and cannot survive independently. Our goal is to show strategies for the search engines to survive in the internet market. From mathematical

Yuanshi Wang; Hong Wu

2006-01-01

226

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

E-print Network

Fully Automatic Wrapper Generation For Search Engines Hongkun Zhao, Weiyi Meng Dept. of Computer, IL 60607, USA yu@cs.uic.edu ABSTRACT When a query is submitted to a search engine, the search engine information irrelevant to the query, such as information related to the hosting site of the search engine

Meng, Weiyi

227

Discovery of Similarity Computations of Search Engines \\Lambda KingLup Liu  

E-print Network

Discovery of Similarity Computations of Search Engines \\Lambda King­Lup Liu School of CTI De to determine the similarities of text documents to a query due to a search engine are: (1) a global search engine, con­ structed on top of a group of local search engines, wishes to retrieve the set of local

Meng, Weiyi

228

OLAP on Search Logs: An Infrastructure Supporting Data-Driven Applications in Search Engines  

E-print Network

are not made or distributed for profit or commercial advantage and that copies bear this notice and the full profitable for the search engine. For example, by examining the queries frequently asked by users after the query "KDD 2009", a search engine can sug- gest queries such as "Paris hotel" which may improve users

Pei, Jian

229

Power Systems Engineering Research Center Dennis Ray Ward Jewell  

E-print Network

Power Systems Engineering Research Center Dennis Ray Ward Jewell Executive Director, Power Systems-Learjet Fellow Madison, WI 53706-1691 Director, Power Quality Laboratory djray@engr.wisc.edu Wichita State an overview of the Power Systems Engineering Research Center (PSERC), a National Science Foundation Industry

230

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

231

40 CFR 1045.140 - What is my engine's maximum engine power?  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false What is my engine's maximum engine power? 1045.140 Section 1045.140 Protection...EMISSIONS FROM SPARK-IGNITION PROPULSION MARINE ENGINES AND VESSELS Emission Standards and Related...

2010-07-01

232

40 CFR 1054.140 - What is my engine's maximum engine power and displacement?  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false What is my engine's maximum engine power and displacement? 1054.140 Section 1054...EMISSIONS FROM NEW, SMALL NONROAD SPARK-IGNITION ENGINES AND EQUIPMENT Emission Standards and Related...

2010-07-01

233

DYNIQX: A novel meta-search engine for metadata based cross search Jianhan Zhu, Dawei Song, Marc Eisenstadt, Cristi Barladeanu, Stefan Rger  

E-print Network

DYNIQX: A novel meta-search engine for metadata based cross search Jianhan Zhu, Dawei Song, Marc meta-search engine called Dyniqx for metadata based cross search. Dyniqx exploits the availability heterogeneous search engines. In addition, metadata from these search engines are used for generating dynamic

Zhu, Jianhan

234

Real-time earthquake monitoring using a search engine method.  

PubMed

When an earthquake occurs, seismologists want to use recorded seismograms to infer its location, magnitude and source-focal mechanism as quickly as possible. If such information could be determined immediately, timely evacuations and emergency actions could be undertaken to mitigate earthquake damage. Current advanced methods can report the initial location and magnitude of an earthquake within a few seconds, but estimating the source-focal mechanism may require minutes to hours. Here we present an earthquake search engine, similar to a web search engine, that we developed by applying a computer fast search method to a large seismogram database to find waveforms that best fit the input data. Our method is several thousand times faster than an exact search. For an Mw 5.9 earthquake on 8 March 2012 in Xinjiang, China, the search engine can infer the earthquake's parameters in <1 s after receiving the long-period surface wave data. PMID:25472861

Zhang, Jie; Zhang, Haijiang; Chen, Enhong; Zheng, Yi; Kuang, Wenhuan; Zhang, Xiong

2014-01-01

235

Real-time earthquake monitoring using a search engine method  

NASA Astrophysics Data System (ADS)

When an earthquake occurs, seismologists want to use recorded seismograms to infer its location, magnitude and source-focal mechanism as quickly as possible. If such information could be determined immediately, timely evacuations and emergency actions could be undertaken to mitigate earthquake damage. Current advanced methods can report the initial location and magnitude of an earthquake within a few seconds, but estimating the source-focal mechanism may require minutes to hours. Here we present an earthquake search engine, similar to a web search engine, that we developed by applying a computer fast search method to a large seismogram database to find waveforms that best fit the input data. Our method is several thousand times faster than an exact search. For an Mw 5.9 earthquake on 8 March 2012 in Xinjiang, China, the search engine can infer the earthquake’s parameters in <1?s after receiving the long-period surface wave data.

Zhang, Jie; Zhang, Haijiang; Chen, Enhong; Zheng, Yi; Kuang, Wenhuan; Zhang, Xiong

2014-12-01

236

Real-time earthquake monitoring using a search engine method  

PubMed Central

When an earthquake occurs, seismologists want to use recorded seismograms to infer its location, magnitude and source-focal mechanism as quickly as possible. If such information could be determined immediately, timely evacuations and emergency actions could be undertaken to mitigate earthquake damage. Current advanced methods can report the initial location and magnitude of an earthquake within a few seconds, but estimating the source-focal mechanism may require minutes to hours. Here we present an earthquake search engine, similar to a web search engine, that we developed by applying a computer fast search method to a large seismogram database to find waveforms that best fit the input data. Our method is several thousand times faster than an exact search. For an Mw 5.9 earthquake on 8 March 2012 in Xinjiang, China, the search engine can infer the earthquake’s parameters in <1?s after receiving the long-period surface wave data. PMID:25472861

Zhang, Jie; Zhang, Haijiang; Chen, Enhong; Zheng, Yi; Kuang, Wenhuan; Zhang, Xiong

2014-01-01

237

Modeling Long-Term Search Engine Usage Ryen W. White, Ashish Kapoor, and Susan T. Dumais  

E-print Network

Modeling Long-Term Search Engine Usage Ryen W. White, Ashish Kapoor, and Susan T. Dumais Microsoft engines are key components in the online world and the choice of search engine is an important determinant search engine usage. In particular, we study the engine usage behavior of more than ten thousand users

Dumais, Susan

238

Using Sampled Data and Regression to Merge Search Engine Results  

E-print Network

Using Sampled Data and Regression to Merge Search Engine Results Luo Si and Jamie Callan School of Computer Science Carnegie Mellon University Pittsburgh, PA 15213 lsi@cs.cmu.edu, callan@cs.cmu.edu ABSTRACT

Callan, Jamie

239

Keynote Talk Search Engine Support for Software Applications  

E-print Network

Keynote Talk Search Engine Support for Software Applications Jamie Callan Language Technologies Institute Carnegie Mellon University Pittsburgh, PA, USA callan@cs.cmu.edu Abstract Question, Human language technologies, Question answering Bio Jamie Callan is a Professor of Computer Science

Callan, Jamie

240

One Size Does Not Fit All Multimodal Search on Mobile and Desktop Devices with the I-SEARCH Search Engine  

E-print Network

-SEARCH Search Engine Thomas Steiner Google Germany GmbH tomac@google.com Lorenzo Sutton Accademia Naz. di S search experience across device classes, one size does not fit all. We highlight ways to achieve the same, requires prior specific permission and/or a fee. ICMR '12, June 5­8, Hong Kong, China Copyright c 2012 ACM

Verroust-Blondet, Anne

241

Analysis of a very large web search engine query log  

Microsoft Academic Search

In this paper we present an analysis of an AltaVista Search Engine query log consisting of approximately 1 billion entries for search requests over a period of six weeks. This represents almost 285 million user sessions, each an attempt to fill a single information need. We present an analysis of individual queries, query duplication, and query sessions. We also present

Craig Silverstein; Hannes Marais; Monika Henzinger; Michael Moricz

1999-01-01

242

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

243

Image and Video Search Engine for the World Wide Web  

Microsoft Academic Search

We describe a visual information system prototype for searching for images and videos on the WorldWide Web. New visual information in the form of images, graphics, animations and videos is being published on the Web at an incredible rate. However, cataloging this visual data is beyond the capabilities of current text-based Web search engines. In this paper, we describe a

John R. Smith; Shih-Fu Chang

1997-01-01

244

The SPIRIT Spatial Search Engine: Architecture, Ontologies and Spatial Indexing  

Microsoft Academic Search

The SPIRIT search engine provides a test bed for the de- velopment of web search technology that is specialised for access to ge- ographical information. Major components include the user interface, geographical ontology, maintenance and retrieval functions for a test col- lection of web documents, textual and spatial indexes, relevance ranking and metadata extraction. Here we summarise the functionality and

Christopher B. Jones; Alia I. Abdelmoty; David Finch; Gaihua Fu; Subodh Vaid

2004-01-01

245

How Safe Are Kid-Safe Search Engines?  

ERIC Educational Resources Information Center

Examines search tools available to elementary and secondary school students, both human-compiled and crawler-based, to help direct them to age-appropriate Web sites; analyzes the procedures of search engines labeled family-friendly or kid safe that use filters; and tests the effectiveness of these services to students in school libraries. (LRW)

Masterson-Krum, Hope

2001-01-01

246

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 ­ 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 ­ Fluid Power

Saskatchewan, University of

247

Optimal Maintenance Scheduling of a Gas Engine Power Plant  

E-print Network

Plant Project in Sasolburg (SGEPP) ­ 18 identical gas engines consuming natural gas & producing1 Optimal Maintenance Scheduling of a Gas Engine Power Plant Pedro M. Castro Ignacio E. Grossmann MILP starting from GDP model September 4-5 2EWO Fall Meeting 2013 Problem statement · Gas Engine Power

Grossmann, Ignacio E.

248

LAILAPS: The Plant Science Search Engine  

PubMed Central

With the number of sequenced plant genomes growing, the number of predicted genes and functional annotations is also increasing. The association between genes and phenotypic traits is currently of great interest. Unfortunately, the information available today is widely scattered over a number of different databases. Information retrieval (IR) has become an all-encompassing bioinformatics methodology for extracting knowledge from complex, heterogeneous and distributed databases, and therefore can be a useful tool for obtaining a comprehensive view of plant genomics, from genes to traits. Here we describe LAILAPS (http://lailaps.ipk-gatersleben.de), an IR system designed to link plant genomic data in the context of phenotypic attributes for a detailed forward genetic research. LAILAPS comprises around 65 million indexed documents, encompassing >13 major life science databases with around 80 million links to plant genomic resources. The LAILAPS search engine allows fuzzy querying for candidate genes linked to specific traits over a loosely integrated system of indexed and interlinked genome databases. Query assistance and an evidence-based annotation system enable time-efficient and comprehensive information retrieval. An artificial neural network incorporating user feedback and behavior tracking allows relevance sorting of results. We fully describe LAILAPS’s functionality and capabilities by comparing this system’s performance with other widely used systems and by reporting both a validation in maize and a knowledge discovery use-case focusing on candidate genes in barley. PMID:25480116

Esch, Maria; Chen, Jinbo; Colmsee, Christian; Klapperstück, Matthias; Grafahrend-Belau, Eva; Scholz, Uwe; Lange, Matthias

2015-01-01

249

LAILAPS: the plant science search engine.  

PubMed

With the number of sequenced plant genomes growing, the number of predicted genes and functional annotations is also increasing. The association between genes and phenotypic traits is currently of great interest. Unfortunately, the information available today is widely scattered over a number of different databases. Information retrieval (IR) has become an all-encompassing bioinformatics methodology for extracting knowledge from complex, heterogeneous and distributed databases, and therefore can be a useful tool for obtaining a comprehensive view of plant genomics, from genes to traits. Here we describe LAILAPS (http://lailaps.ipk-gatersleben.de), an IR system designed to link plant genomic data in the context of phenotypic attributes for a detailed forward genetic research. LAILAPS comprises around 65 million indexed documents, encompassing >13 major life science databases with around 80 million links to plant genomic resources. The LAILAPS search engine allows fuzzy querying for candidate genes linked to specific traits over a loosely integrated system of indexed and interlinked genome databases. Query assistance and an evidence-based annotation system enable time-efficient and comprehensive information retrieval. An artificial neural network incorporating user feedback and behavior tracking allows relevance sorting of results. We fully describe LAILAPS's functionality and capabilities by comparing this system's performance with other widely used systems and by reporting both a validation in maize and a knowledge discovery use-case focusing on candidate genes in barley. PMID:25480116

Esch, Maria; Chen, Jinbo; Colmsee, Christian; Klapperstück, Matthias; Grafahrend-Belau, Eva; Scholz, Uwe; Lange, Matthias

2015-01-01

250

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.

251

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

252

Human factors engineering incorporated into the Carolina Power & Light Company's nuclear power plant control panel modifications  

Microsoft Academic Search

The authors present the approach used at Carolina Power and Light's nuclear power plants that has incorporated human-factors engineering into their plant modification process. An HFE (human-factors engineering) design guide or HFE specification is developed, which is used by the design engineers or plant engineering support groups in the preparation of plant modifications. The procedure provided in the design guide

D. M. Beith; E. M. Shoemaker; K. Horn; D. Boush

1988-01-01

253

Power control for hot gas engines  

SciTech Connect

A hot gas engine is described in which the expander piston of the engine is connected to an expander crankshaft. A displacer piston of the engine is connected to a separate displacer crankshaft which may or may not be coaxial with the expander crankshaft. A phase angle control mechanism used as a power control for changing the phase angle between the expander and displacer crankshaft is located between the two crankshafts. The phase angle control mechanism comprises a differential-type mechanism comprised of a pair of gears, as for example, bevel gears, one of which is connected to one end of the expander crankshaft and the other of which is connected to the opposite end of the displacer crankshaft. A mating bevel gear is disposed in meshing engagement with the first two bevel gears to provide a phase-angle control between the two crankshafts. Other forms of differential mechanisms may be used including conventional spur gears connected in a differential type arrangement.

Frosch, R.A.; Macglashan, W.F.

1980-10-21

254

Integrating power engineering topics and applications in non-power courses  

Microsoft Academic Search

This paper investigates integrating power engineering material over the breadth of an electrical engineering curriculum. Electrical engineering curricula have a large number of required courses and many subareas for students to study. By introducing power concepts in a variety of courses, students may be motivated to take additional courses in the power area and are better prepared for the diverse

J. J. Cupal; R. G. Jacquot; S. Legowski; B. J. W. Pierre; A. H. M. S. Ula; B. M. Wilamowski; B. Chowdhury

1999-01-01

255

Internet Power Searching: Finding Pearls in a Zillion Grains of Sand.  

ERIC Educational Resources Information Center

Discusses searching on the World Wide Web. Highlights include search-engine size; features of the six largest search engines; features of five metasearch engines; intelligent agents; two Web sites for difficult-to-find information, including industry statistics and market data; Internet publishers and databases; specialty search engines; and…

Kassel, Amelia

1999-01-01

256

Snoogle: A Search Engine for Pervasive Environments  

E-print Network

are disconnected from the cyberspace, searching for information in the physical world is more difficult are considered as the representatives of the physical objects they are attached to, naturally form a database retrieval (IR) has been widely used to search for information1 within databases. People can use search

Li, Qun

257

Search Engines for Tomorrow's Scholars, Part Two  

ERIC Educational Resources Information Center

This two-part article considers how well some of today's search tools support scholars' work. The first part of the article reviewed Google Scholar and Microsoft Academic Search using a modified version of Carole L. Palmer, Lauren C. Teffeau, and Carrier M. Pirmann's framework (2009). Microsoft Academic Search is a strong contender when…

Fagan, Jody Condit

2012-01-01

258

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.

259

How does our search engine "see" the world? The case of amodal completion  

E-print Network

How does our search engine "see" the world? The case of amodal completion Jeremy M. Wolfe & Ester internal search engine. Keywords Visual attention . Visual search . Amodal completion . Occlusion . Object internal search engine has access to a representation of the world that can be used to guide the deployment

260

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}@cs.mu.oz.au Abstract With the ubiquity of the Internet and Web, search engines have been sprouting like mushrooms after a rainfall. However, innovative search engines and guided search capabilities have started appearing only

Buyya, Rajkumar

261

Directing Web Search Engines using a Knowledge Amplification by Structured Expert Randomization Architecture  

E-print Network

Directing Web Search Engines using a Knowledge Amplification by Structured Expert Randomization is inevitable. 1 Web Search Engines The World Wide Web continues to play an important role in storing environments. Search engines for the general web typically do not really search the World Wide Web directly

Chen, Shu-Ching

262

A Customized Web Search Engine Using a Tiny WebSQL Query Language  

E-print Network

A Customized Web Search Engine Using a Tiny WebSQL Query Language A Project Report Submitted information­retrieval requests (search inputs) to "search engines", also known as "index servers", that index as many documents as they can find from the Web [5]. Each search engine uses software called "spider

263

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 brands (Google, MSN, Yahoo!, and a locally developed search engine) while controlling for the quality

Jansen, James

264

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

Code of Federal Regulations, 2010 CFR

... Large transport category airplanes: Turbine engine powered: En route limitations... Large transport category airplanes: Turbine engine powered: En route limitations...inoperative. (a) No person operating a turbine engine powered large transport...

2010-01-01

265

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

Code of Federal Regulations, 2010 CFR

... Large transport category airplanes: Turbine engine powered: En route limitations... Large transport category airplanes: Turbine engine powered: En route limitations...1958 (SR422). No person may operate a turbine engine powered large transport...

2010-01-01

266

Integrated engine-generator concept for aircraft electric secondary power  

NASA Technical Reports Server (NTRS)

The integrated engine-generator concept of locating an electric generator inside an aircraft turbojet or turbofan engine concentric with, and driven by, one of the main engine shafts is discussed. When properly rated, the generator can serve as an engine starter as well as a generator of electric power. The electric power conversion equipment and generator controls are conveniently located in the aircraft. Preliminary layouts of generators in a large engine together with their physical sizes and weights indicate that this concept is a technically feasible approach to aircraft secondary power.

Secunde, R. R.; Macosko, R. P.; Repas, D. S.

1972-01-01

267

Design search and optimization in aerospace engineering.  

PubMed

In this paper, we take a design-led perspective on the use of computational tools in the aerospace sector. We briefly review the current state-of-the-art in design search and optimization (DSO) as applied to problems from aerospace engineering, focusing on those problems that make heavy use of computational fluid dynamics (CFD). This ranges over issues of representation, optimization problem formulation and computational modelling. We then follow this with a multi-objective, multi-disciplinary example of DSO applied to civil aircraft wing design, an area where this kind of approach is becoming essential for companies to maintain their competitive edge. Our example considers the structure and weight of a transonic civil transport wing, its aerodynamic performance at cruise speed and its manufacturing costs. The goals are low drag and cost while holding weight and structural performance at acceptable levels. The constraints and performance metrics are modelled by a linked series of analysis codes, the most expensive of which is a CFD analysis of the aerodynamics using an Euler code with coupled boundary layer model. Structural strength and weight are assessed using semi-empirical schemes based on typical airframe company practice. Costing is carried out using a newly developed generative approach based on a hierarchical decomposition of the key structural elements of a typical machined and bolted wing-box assembly. To carry out the DSO process in the face of multiple competing goals, a recently developed multi-objective probability of improvement formulation is invoked along with stochastic process response surface models (Krigs). This approach both mitigates the significant run times involved in CFD computation and also provides an elegant way of balancing competing goals while still allowing the deployment of the whole range of single objective optimizers commonly available to design teams. PMID:17519198

Keane, A J; Scanlan, J P

2007-10-15

268

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

269

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

E-print Network

Two-Level Smart Search Engine Using Ontology- Based Semantic Reasoning Haiping Xu and Arturo W. Li 02747, USA {hxu, ali}@umassd.edu Abstract--Traditional search engines are typically keyword- based engines, in this paper, we introduce an approach to developing a smart search engine using ontology

Xu, Haiping

270

Modeling and Optimizing Hypertextual Search Engines Based on the Reasearch of Larry Page and Sergey Brin  

E-print Network

Modeling and Optimizing Hypertextual Search Engines Based on the Reasearch of Larry Page and Sergey 15, 2009 mek (UVM) Search Engines April 15, 2009 1 / 57 #12;Abstract Overview As the volume search engines work and what modifications can potentially be made to make the engines work more quickly

Wu, Xindong

271

August 17, 2000 ARIES: Fusion Power Core and Power Cycle Engineering/ARR 1  

E-print Network

with liquid metal blanket through use of IHX Conventional Steam Cycle: Steel/Water = 35% ARIES-RS LiAugust 17, 2000 ARIES: Fusion Power Core and Power Cycle Engineering/ARR 1 ARIES: Fusion Power Core and Power Cycle Engineering The ARIES Team Presented by A. René Raffray ARIES Peer Review Meeting University

Raffray, A. René

272

Power booster internal combustion engine flywheel  

SciTech Connect

This patent describes a flywheel apparatus for an internal combustion engine. The engine comprises a crankshaft, a cam shaft, a means of advancing the crankshaft in rotation on the power strokes to that of the flywheel, means of retarding the crankshaft on the compression strokes the flywheel. The apparatus further comprising, a first flywheel, linkage means connecting a flywheel shaft to the crankshaft, a first flywheel housing, bearing means of linking the first flywheel to the flywheel shaft, a plurality of cylinders housed to the first flywheel housing, a plurality of nitrogen charged bladders housed within the cylinders, a plurality of cam action rods housed within the cylinders, a cam housed to the flywheel shaft, linkage means linking the cam action rods to the bladders, second linkage means linking the cam action rods by way of a cam roller to the cam, a freewheeling flywheel housing, bearing means linking the freewheeling flywheel to the flywheel shaft, third linkage means linking a freewheeling clutch between the freewheeling flywheel housing and the flywheel shaft, a shifter apparatus comprising means of locking the first flywheel housing to the freewheeling flywheel housing in a first position, means of connecting the flywheel shaft and the freewheeling flywheel housing by way of the freewheeling clutch in a second position, a front flywheel comprising means of driving the cam shaft at a balanced rotational speed from the crankshaft when the crankshaft is rotating at varying rotational speeds within each revolution of the crankshaft.

Dingess, B.E.

1989-08-08

273

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

274

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

275

22. Power plant engine pipingcompressed air piping diagram and sections, ...  

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

22. Power plant engine piping-compressed air piping diagram and sections, sheet 81 of 130 - Naval Air Station Fallon, Power Plant, 800 Complex, off Carson Road near intersection of Pasture & Berney Roads, Fallon, Churchill County, NV

276

21. Power plant engine fuel oil piping diagrams, sheet 83 ...  

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

21. Power plant engine fuel oil piping diagrams, sheet 83 of 130 - Naval Air Station Fallon, Power Plant, 800 Complex, off Carson Road near intersection of Pasture & Berney Roads, Fallon, Churchill County, NV

277

NEW FACULTY SEARCHES IN MECHANICAL ENGINEERING  

E-print Network

3 Evaluation of Oxydiesel as a Fuel for Direct-Injection Compression- Ignition Engines Final Report engines. Its potential benefits are both economic and environmental. Reduced harmful emissions can to evaluate this oxydiesel fuel for diesel engines that would be commonly used with commercial carriers

278

Building Blocks for Semantic Search Engines  

E-print Network

context) such that · w is a mention of entity e · "Carl Sagan" or "Sagan" is a mention of the concept.g. Born in New York in 1934 , Sagan was a noted astronomer whose lifelong passion was searchingDigit isDDDD Where was Sagan born? type=region NEAR "Sagan" Name a physicist who searched for intelligent

Baeza-Yates, Ricardo

279

Integrating search engines with data mining for customer-oriented information search  

Microsoft Academic Search

In recent years, the World Wide Web (WWW) has become incredibly popular in homes and offices alike. Consumers need to search for relevant information to help solve purchasing problems on various Web sites. Although there is no question that great numbers of WWW users will continue using search engines for information retrieval, consumers still hesitate before making a final decision,

Tim France; Dave Yen; Jyun-cheng Wang; Chia-ming Chang

2002-01-01

280

TRENDS IN SEARCHING FOR COMMERCE RELATED INFORMATION ON WEB SEARCH ENGINES  

Microsoft Academic Search

According to the Pew Web Internet and American Life Project (Raine, 2005) search engine use is edging towards overtaking email usage as the primary Internet application for many users. Accessing commerce related information on the Web is becoming an everyday activity for many people in the digital age. The level of commerce related Web searching is a major subject of

Amanda Spink; Bernard J. Jansen

281

Science and Engineering at The University of Edinburgh Site search: Search words Logout rsh End Edit  

E-print Network

Science and Engineering at The University of Edinburgh Site search: Search words Logout rsh End Edit Internal breadcrumbs: Home >> Research >> Earth and Planetary Science >> CCS, carbon capture and storage, Diagenesis School of GeoSciences Earth and Planetary Science Edit: Page | Wysiwyg | Metadata

Haszeldine, Stuart

282

Asian Studies WWW VL Search Engines: Pt 1  

NSDL National Science Digital Library

Yet another resource from online Asian Studies-guru T. Matthew Ciolek of the Australian National University, this dedicated search engine accesses "major Asian Studies' research resources recorded by the HotBot database." The engine covers the Websites of ten established Asian Studies organizations (asianart.com; coombs.anu.edu.au; iias.leidenuniv.nl; menic.utexas.edu; sun.sino.uni-heidelberg.de; www.aasianst.org; www.asian.gu.edu.au; www.asiasociety.org; www.ciolek.com; and www.ias.berkeley.edu), and search returns include brief annotations. The page also provides links to sixteen Asian Pacific country-specific search engines. Asia Pacific Research Online, Ciolek's main page, offers links to his array of online information resources and special projects.

283

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

284

PERFORMANCE OF A STIRLING ENGINE POWERED HEAT ACTIVATED HEAT PUMP  

E-print Network

PERFORMANCE OF A STIRLING ENGINE POWERED HEAT ACTIVATED HEAT PUMP W. D. C. Richards and W. L. Auxer) which employs a natural gas fired Stirling engine to drive a Rankine cycle vapor compressor is presently by the heat pump effect. The Stirling engine/Rankine cycle refrigeration loop heat pump being developed would

Oak Ridge National Laboratory

285

Building multi-agent systems for power engineering applications  

Microsoft Academic Search

In order to support the power engineering community in terms of effective implementation of multi-agent system technology, two key technical issues need to be addressed: how should\\/can agents, autonomous intelligent agents and societies of agents be built for power engineering applications? Underlying these core questions are a number of key technical challenges. In this paper the authors discuss the technical

Stephen D. J. McArthur; E. M. Davidson; Victoria M. Catterson

2006-01-01

286

Solar powered stirling engine for self-generating electricity  

Microsoft Academic Search

In the energy deficient world, it is strongly felt that the use of solar energy as a possible source is not being fully utilised. So in an attempt to deploy its use, a novel concept of “solar powered stirling engine” is introduced in this paper. At present there are no solar powered Stirling engines ready for use in many countries.

R. Aishwarya; K. DhivyaBharathi

2011-01-01

287

Inside the Supernova: A Powerful Convective Engine  

E-print Network

Condensed Abstract: We present an extensive study of the inception of supernova explosions by following the evolution of the cores of two massive stars (15 Msun and 25 Msun) in two dimensions. Our calculations begin at the onset of core collapse and stop several 100 ms after the bounce, at which time successful explosions of the appropriate magnitude have been obtained. (...) Guided by our numerical results, we have developed a paradigm for the supernova explosion mechanism. We view a supernova as an open cycle thermodynamic engine in which a reservoir of low-entropy matter (the envelope) is thermally coupled and physically connected to a hot bath (the protoneutron star) by a neutrino flux, and by hydrodynamic instabilities. (...) In essence, a Carnot cycle is established in which convection allows out-of-equilibrium heat transfer mediated by neutrinos to drive low entropy matter to higher entropy and therefore extracts mechanical energy from the heat generated by gravitational collapse. We argue that supernova explosions are nearly guaranteed and self-regulated by the high efficiency of the thermodynamic engine. (...) Convection continues to accumulate energy exterior to the neutron star until a successful explosion has occurred. At this time, the envelope is expelled and therefore uncoupled from the heat source (the neutron star) and the energy input ceases. This paradigm does not invoke new or modified physics over previous treatments, but relies on compellingly straightforward thermodynamic arguments. It provides a robust and self-regulated explosion mechanism to power supernovae which is effective under a wide range of physical parameters.

Marc Herant; Willy Benz; W. Raphael Hix; Chris F. Fryer; Stirling Colgate

1994-04-12

288

Adding a Visualization Feature to Web Search Engines: It’s Time  

SciTech Connect

Since the first world wide web (WWW) search engine quietly entered our lives in 1994, the “information need” behind web searching has rapidly grown into a multi-billion dollar business that dominates the internet landscape, drives e-commerce traffic, propels global economy, and affects the lives of the whole human race. Today’s search engines are faster, smarter, and more powerful than those released just a few years ago. With the vast investment pouring into research and development by leading web technology providers and the intense emotion behind corporate slogans such as “win the web” or “take back the web,” I can’t help but ask why are we still using the very same “text-only” interface that was used 13 years ago to browse our search engine results pages (SERPs)? Why has the SERP interface technology lagged so far behind in the web evolution when the corresponding search technology has advanced so rapidly? In this article I explore some current SERP interface issues, suggest a simple but practical visual-based interface design approach, and argue why a visual approach can be a strong candidate for tomorrow’s SERP interface.

Wong, Pak C.

2008-11-11

289

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

290

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.

291

Palm Power Free-Piston Stirling Engine Control Electronics  

NASA Astrophysics Data System (ADS)

A prototype 35We, JP-8 fueled, soldier-wearable power system for the DARPA Palm Power program has been developed and tested by Sunpower. A hermetically-sealed 42We Sunpower Free-Piston Stirling Engine (FPSE) with integral linear alternator is the prime mover for this system. To maximize system efficiency over a broad range of output power, a non-dissipative, highly efficient electronic control system which modulates engine output power by varying piston stroke and converts the AC output voltage of the FPSE into 28Vdc for the Palm Power end user, has been designed and demonstrated as an integral component of the Palm Power system. This paper reviews the current status and progress made in developing the control electronics for the Palm Power system, in addition to describing the operation and demonstrated performance of the engine controller in the context of the current JP-8 fueled Palm Power system.

Keiter, Douglas E.; Holliday, Ezekiel

2007-01-01

292

Inside the supernova: A powerful convective engine  

NASA Technical Reports Server (NTRS)

We present an extensive study of the inception of supernova explosions by following the evolution of the cores of two massive stars (15 and 25 Solar mass) in multidimension. Our calculations begin at the onset of core collapse and stop several hundred milliseconds after the bounce, at which time successful explosions of the appropriate magnitude have been obtained. Similar to the classical delayed explosion mechanism of Wilson, the explosion is powered by the heating of the envelope due to neutrinos emitted by the protoneutron star as it radiates the gravitational energy liberated by the collapse. However, as was shown by Herant, Benz, & Colgate, this heating generates strong convection outside the neutrinosphere, which we demonstrate to be critical to the explosion. By breaking a purely stratified hydrostatic equilibrium, convection moves the nascent supernova away from a delicate radiative equilibrium between neutrino emission and absorption, Thus, unlike what has been observed in one-dimensional calculations, explosions are rendered quite insensitive to the details of the physical input parameters such as neutrino cross sections or nuclear equation of state parameters. As a confirmation, our comparative one-dimensional calculations with identical microphysics, but in which convection cannot occur, lead to dramatic failures. Guided by our numerical results, we have developed a paradigm for the supernova explosion mechanism. We view a supernova as an open cycle thermodynamic engine in which a reservoir of low-entropy matter (the envelope) is thermally coupled and physically connected to a hot bath (the protoneutron star) by a neutrino flux, and by hydrodynamic instabilities. This paradigm does not invoke new or modified physics over previous treatments, but relies on compellingly straightforward thermodynamic arguments. It provides a robust and self-regulated explosion mechanism to power supernovae that is effective under a wide range of physical parameters.

Herant, Marc; Benz, Willy; Hix, W. Raphael; Fryer, Chris L.; Colgate, Stirling A.

1994-01-01

293

Improving Free-Piston Stirling Engine Specific Power  

NASA Technical Reports Server (NTRS)

This work uses analytical methods to demonstrate the potential benefits of optimizing piston and/or displacer motion in a Stirling Engine. Isothermal analysis was used to show the potential benefits of ideal motion in ideal Stirling engines. Nodal analysis is used to show that ideal piston and displacer waveforms are not optimal in real Stirling engines. Constrained optimization was used to identify piston and displacer waveforms that increase Stirling engine specific power.

Briggs, Maxwell Henry

2014-01-01

294

Encounter / Stop and Search The power to Encounter / Stop and Search is  

E-print Network

violence (s60 CJPO Act) J Articles to cause criminal damage (s1 PACE) K Arrested other offence L Terrorism The law gives Police Officers powers to search you, anything you are carrying and any vehicle you are in. Police must use their powers of stop and search fairly and without unlawful discrimination. They will try

Rosen, Jay

295

Solar System object image search: A precovery search engine  

NASA Astrophysics Data System (ADS)

While regular archive searches can find images at a fixed location, they cannot find images of moving targets such as asteroids or comets. The Solar System Object Image Search (SSOIS) at the Canadian Astronomy Data Centre allows users to search for images of moving objects, allowing precoveries. SSOIS accepts as input either a list of observations, an object designation, a set of orbital elements, or a user-generated ephemeris for an object. It then searches for observations of that object over a range of dates. The user is then presented with a list of images containing that object from a variety of archives. Initially created to search the CFHT MegaCam archive, SSOIS has been extended to other telescopes including Gemini, Subaru/SuprimeCam, HST, the SDSS, AAT, the ESO telescopes, and the NOAO telescopes (KPNO/CTIO/WIYN), for a total of 7.6 million images. The SSOIS tool is located on the web at http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/en/ssois/.

Gwyn, S.; Hill, N.; Kavelaars, J.

2014-07-01

296

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

297

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

298

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

299

ArraySearch: A Web-Based Genomic Search Engine.  

PubMed

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

300

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

301

The Effectiveness of Web Search Engines to Index New Sites from Different Countries  

ERIC Educational Resources Information Center

Introduction: Investigates how effectively Web search engines index new sites from different countries. The primary interest is whether new sites are indexed equally or whether search engines are biased towards certain countries. If major search engines show biased coverage it can be considered a significant economic and political problem because…

Pirkola, Ari

2009-01-01

302

An Empirical Analysis of Paid Placement in Chinese Web Search Engine Results  

Microsoft Academic Search

Web search engines provide information access to millions of users per day. For many people, Web search engine are now the primary method for finding information, news, and products. Major search engines offer at least two types of results on the results page, non-sponsored and sponsored results. The goal of this study is to get a better idea of how

Haiquan Long; Benfu Lv; Geng Peng; Jie Chen

2008-01-01

303

Measuring the efficiency of search engines: an application of data envelopment analysis  

Microsoft Academic Search

This paper adopted the data envelopment analysis (DEA) method to investigate the efficiency of several search engines. A query search on a search engine is modelled as a production process. The input and output vectors are defined and measured accordingly. We studied seven engines, Alta Vista, Excite, Hotbot, Lycos, Infoseek, Open Text, and WebCrawler and found that Alta Vista, Excite,

Donald Lien; Yan Peng

1999-01-01

304

SEARCH ENGINES IN THE E-PROMOTIONS MIX: A PRELIMINARY EMPIRICAL INVESTIGATION  

Microsoft Academic Search

Due to the large proportion of consumers that use search engines to identify sources of products or services, it is the contention of this study that any e-promotion activities in which a firm engages must start with search engine positioning. Consequently, this study examines the use of basic search engine placement tactics by businesses to enhance their visibility.

Craig A. Conrad; Timothy Johnston

305

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 computation and memory, allowing the entire architec- ture to compute at high rates. Network search engines network ser- vices, the demands placed on these network search engines are increasingly causing them

306

A study of results overlap and uniqueness among major Web search engines  

E-print Network

A study of results overlap and uniqueness among major Web search engines Amanda Spink a,*, Bernard engines is an important and significant area of research. Millions of people world wide use Web search retrieved by multiple Web search engines for a large set of more than 10,000 queries. Previous smaller

Jansen, James

307

Web Search Engines: Practice and Experience Tao Yang, University of California at Santa Barbara  

E-print Network

Web Search Engines: Practice and Experience Tao Yang, University of California at Santa Barbara previously accessed URLs. Consequently, the service from a search engine becomes indispensable for users to navigate around the Web in an effective manner. General web search engines provide the most popular way

Yang, Tao

308

Click-Tracking Blocker: Privacy Preservation by Disabling Search Engines' Click-Tracking  

E-print Network

Click-Tracking Blocker: Privacy Preservation by Disabling Search Engines' Click-Tracking Roberto and Computer Science University of Central Florida Orlando, FL 32816 USA Abstract--On a search engine result action will be tracked by returning back to the search engine first and then redirecting

Zou, Cliff C.

309

TalkMiner: A Search Engine for Online Lecture Video John Adcock1  

E-print Network

TalkMiner: A Search Engine for Online Lecture Video John Adcock1 Matthew Cooper1 Laurent Denoue1}@fxpal.com hpirsiav@ics.uci.edu ABSTRACT TalkMiner is a search engine for lecture webcasts. Lecture videos of sources. A public website now allows users to experiment with the search engine. Categories and Subject

Reif, Rafael

310

Automatic Extraction of Dynamic Record Sections From Search Engine Result Pages  

E-print Network

Automatic Extraction of Dynamic Record Sections From Search Engine Result Pages Hongkun Zhao, Weiyi University of Illinois at Chicago Chicago, IL 60607, USA yu@cs.uic.edu ABSTRACT A search engine returned to the query, such as information related to the hosting site of the search engine. In this paper, we present

Meng, Weiyi

311

GeoSearcher: GeoSpatial Ranking of Search Engine Results.  

ERIC Educational Resources Information Center

Discusses search engines and describes a prototype system that provides dynamic ranking of search engine results for geospatial queries based on the URL of the host site. Evaluates this approach using user queries and random Web pages, making a contribution to Web retrieval by providing an alternative ranking order for search engine results.…

Watters, Carolyn; Amoudi, Ghada

2002-01-01

312

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' taught by Professor Johnny Wong in Winter 2008. #12;Simulation of Distributed Search Engines: Comparing distributed search engines is presented. This method measures throughput (queries per second) and resource

Waterloo, University of

313

Comparison of Search Engines Non-Neutral and Neutral Pierre Coucheney  

E-print Network

Comparison of Search Engines Non-Neutral and Neutral Behaviors Pierre Coucheney Inria Rennes to model two situations of a non-neutral search engine behavior, which can rank the link propositions ac Terms Economics, Neutrality, Search engines 1. INTRODUCTION Network neutrality has become a very hot

Paris-Sud XI, Université de

314

A Machine Learning Approach to Building Domain-Specific Search Engines  

Microsoft Academic Search

Domain-specic search engines are becomingincreasingly popular because they oer increasedaccuracy and extra features not possiblewith general, Web-wide search engines.Unfortunately, they are also di?cult and timeconsumingto maintain. This paper proposesthe use of machine learning techniques togreatly automate the creation and maintenanceof domain-specic search engines. We describenew research in reinforcement learning, textclassication and information extraction thatenables...

Andrew Mccallum; Kamal Nigam; Jason Rennie; Kristie Seymore

1999-01-01

315

AHIS Dataset Search Engine: An intelligent approach to EML Data Management  

E-print Network

AHIS Dataset Search Engine: An intelligent approach to EML Data Management Hung V. Nguyen, Corinna the information need is well described, a search engine or information retrieval system may not be able to retrieve documents matching the query as stated. In this project, we develop a search engine empowered

Hall, Sharon J.

316

Discovering the Representative of a Search Engine King-Lup Liu,  

E-print Network

Discovering the Representative of a Search Engine King-Lup Liu, School of CTI DePaul University-Binghamton Binghamton, NY 13902 meng@cs.binghamton.edu ABSTRACT Given a large number of search engines on the Internet, it is di cult for a person to determine which search engines could serve his/her information needs

Meng, Weiyi

317

A game theory-based analysis of search engine non-neutral behavior  

E-print Network

A game theory-based analysis of search engine non-neutral behavior Luis Guijarro, Vicent Pla, Bruno the policy of major search engines, and more specifically about their ranking in so-called organic results: the payment by content providers to the search engine in order to improve the chances to be located

Paris-Sud XI, Université de

318

Editorial to the special issue of Computers & Operations Research on Search-Based Software Engineering  

E-print Network

on the application of optimization and metaheuristic search techniques to problems in software engineering. Optimization and search based techniques have been applied to a wide range of software engineering problems as Search Based Software Engineering (SBSE) [5, 10]. The past five years have wit- ness a dramatic growth

Gutjahr, Walter

319

Design and implementation of a Java-based search engine algorithm analysis system  

Microsoft Academic Search

In this article, one system used to auto analyzing and verifying search engine algorithm via using statistical principles and comparisons is suggested, and we call it as SEOAdvisor. The system can predict and verify ranking algorithm used in popular search engines via capturing and comparing Web pages listed on top of search engine results page (SERP) automatically. With this system,

Xia Feifei; Zhang Guangnian

2009-01-01

320

Search engine user behaviour: How can users be guided to quality content?  

Microsoft Academic Search

The typical behaviour of the Web search engine user is widely known: a user only types in one or a few keywords and expects the search engine to produce relevant results in an instant. Search engines not only adapt to this behaviour. On the contrary, they are often faced with criticism that they themselves created this kind of behaviour. As

Dirk Lewandowski

2008-01-01

321

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

322

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

323

Enhancing Internet Search Engines to Achieve Concept-based Retrieval  

Microsoft Academic Search

Most engines used for searching information resources via the Internet employ the Boolean Retrieval Model. Two main drawbacks of this model are that users have difficulty to precisely formulate their concept (or, topic) of interest using Boolean logic and the resulting output is not ranked. We propose to address both these problems by employing a Concept-based Retrieval Model, where a

Fenghua Lu; Thomas Johnsten; Vijay Raghavan; Dennis Traylor

1985-01-01

324

The Architecture of the Obelix - An Improved Internet Search Engine  

Microsoft Academic Search

Contemporary Internet search engine can hardly cope with enormous amount of indexed data, and very seldom succeed in extracting useful information. In order to anticipate usefulness of a web page, proposed solution keeps track of users actions on a web page. A modified web client informs a dedicated server of users' actions performed on a web page, such as printing,

Predrag Knezevic; Bozidar Radunovic; Nenad V. Nikolic; Tijana Jovanovic; Dusan Milanov; Miroslav Nikolic; Veljko M. Milutinovic; Steve Casselman; John Schewel

2000-01-01

325

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

326

Modeling score distributions for combining the outputs of search engines  

Microsoft Academic Search

In this paper the score distributions of a number of text search engines are modeled. It is shown empirically that the score distributions on a per query basis may be fitted using an exponential distribution for the set of non-relevant documents and a normal distribution for the set of relevant documents. Experiments show that this model fits TREC-3 and TREC-4

R. Manmatha; Toni M. Rath; Fangfang Feng

2001-01-01

327

Transparent Queries: investigation users' mental models of search engines  

Microsoft Academic Search

Typically, commercial Web search engines provide very little feedback to the user concerning how a particular query is processed and interpreted. Specifically, they apply key query transformations without the users knowledge. Although these transformations have a pronounced effect on query results, users have very few resources for recognizing their existence and understanding their practical importance. We conducted a user study

Jack Muramatsu; Wanda Pratt

2001-01-01

328

Shaping the Web: Why the Politics of Search Engines Matters  

Microsoft Academic Search

Thisarticlearguesthatsearchenginesraisenotmerelytechnical issues but also political ones. Our study of search engines suggests that they systematically exclude (in some cases by design and in some, accidentally ) certain sites and certain types of sites in favor of others, systematically giving prominence to some at the expense of others. We argue that such biases, which would lead to a nar- rowing of

Lucas D. Introna; Helen Nissenbaum

2000-01-01

329

Semantic similarity between search engine queries using temporal correlation  

Microsoft Academic Search

We investigate the idea of finding semantically related search engine queries based on their ; in other words, we infer that two queries are related if their popularities behave similarly over time. To this end, we first define a new measure of the temporal correlation of two queries based on the correlation coefficient of their frequency functions. We then conduct

Steve Chien; Nicole Immorlica

2005-01-01

330

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

331

Querying the Semantic Web with Corese Search Engine  

Microsoft Academic Search

This paper presents an ontology-based approach for web querying, using semantic metadata. We propose a query language based on ontologies and emphasize its ability to express approximate queries, useful for an efficient information retrieval on the web. We present the Corese search engine dedicated to RDF(S) metadata and illustrate it through several real-world applications.

Olivier Corby; Rose Dieng-Kuntz; Catherine Faron-zucker

2004-01-01

332

A Semisupervised Learning Method to Merge Search Engine Results  

E-print Network

A Semisupervised Learning Method to Merge Search Engine Results LUO SI and JAMIE CALLAN Carnegie Hall, Pittsburgh, PA 15213-3890; email: lsi@cs.cmu.edu; callan@cs.cmu.edu. Permission to make digital, October 2003, Pages 457­491. #12;458 · L. Si and J. Callan 1. INTRODUCTION The problem of finding

Callan, Jamie

333

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

334

Time series analysis of a Web search engine transaction log  

Microsoft Academic Search

In this paper, we use time series analysis to evaluate predictive scenarios using search engine transactional logs. Our goal is to develop models for the analysis of searchers' behaviors over time and investigate if time series analysis is a valid method for predicting relationships between searcher actions. Time series analysis is a method often used to understand the underlying characteristics

Ying Zhang; Bernard J. Jansen; Amanda Spink

2009-01-01

335

Integrated engine-generator for aircraft secondary power.  

NASA Technical Reports Server (NTRS)

The integrated engine-generator concept consists of an electric generator located inside a turbojet or turbofan engine and both concentric with and driven by one of the main engine shafts. The electric power-conversion equipment and generator controls are conveniently located in the aircraft. When properly rated, the generator serves as an engine starter as well as a source of electric power. The available generating capacity permits use of electrically driven engine accessories. This reduces or eliminates the need for an external gearbox on the engine, thereby simplifying the engine and nacelle assembly and increasing aircraft design flexibility. The nacelle diameter can then be decreased, resulting in less aerodynamic drag and reduced takeoff gross weight.

Secunde, R. R.

1972-01-01

336

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

337

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.

338

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.

339

. search engine basics . bibliometric and related methods  

E-print Network

Literature C B1 B2 ARROWSMITH Example: The Magnesium­Migraine Link fatty linoleic MAGNESIUM prostaglandin serotonin cerebrospinal esterase chenodeoxycholic infarction B MIGRAINE C #12; 6 The ARROWSMITH Method . given: query concept C (e.g. migraine) . do: -- run MEDLINE search on C -- derive a set of words (B

Belew, Richard K.

340

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

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Airplanes: Turbine engine powered: Takeoff limitations...Limitations § 121.189 Airplanes: Turbine engine powered: Takeoff limitations. (a) No person operating a turbine engine powered airplane may...

2010-01-01

341

14 CFR 135.387 - Large transport category airplanes: Turbine engine powered: Landing limitations: Alternate airports.  

Code of Federal Regulations, 2010 CFR

... Large transport category airplanes: Turbine engine powered: Landing limitations... Large transport category airplanes: Turbine engine powered: Landing limitations...airport as an alternate airport for a turbine engine powered large transport...

2010-01-01

342

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

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false Airplanes: Turbine engine powered: Landing limitations...Limitations § 121.197 Airplanes: Turbine engine powered: Landing limitations...in a dispatch or flight release for a turbine engine powered airplane...

2010-01-01

343

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

Code of Federal Regulations, 2010 CFR

...Large transport category airplanes: Turbine engine powered: Takeoff limitations...Large transport category airplanes: Turbine engine powered: Takeoff limitations. (a) No person operating a turbine engine powered large transport...

2010-01-01

344

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

Code of Federal Regulations, 2010 CFR

... Supplemental oxygen for sustenance: Turbine engine powered airplanes. 121.329... Supplemental oxygen for sustenance: Turbine engine powered airplanes. (a) General. When operating a turbine engine powered airplane, each...

2010-01-01

345

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

Code of Federal Regulations, 2010 CFR

... Large transport category airplanes: Turbine engine powered; Limitations; Destination... Large transport category airplanes: Turbine engine powered; Limitations; Destination...manager or any other person may permit a turbine engine powered large transport...

2010-01-01

346

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

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false Airplanes: Turbine engine powered: Landing limitations...Limitations § 121.195 Airplanes: Turbine engine powered: Landing limitations...airports. (a) No person operating a turbine engine powered airplane may...

2010-01-01

347

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

Code of Federal Regulations, 2010 CFR

... Large transport category airplanes: Turbine engine powered: Landing limitations... Large transport category airplanes: Turbine engine powered: Landing limitations...airports. (a) No person operating a turbine engine powered large transport...

2010-01-01

348

The VocalSearch Music Search Engine Bryan Pardo, David Little, Rui Jiang, Hagai Livni, Jinyu Han  

E-print Network

queries, queries entered as music notation, and text-based lyrics search. Users are also able as music notation, and text-based lyrics search. Users are also able to contribute songs to the systemThe VocalSearch Music Search Engine Bryan Pardo, David Little, Rui Jiang, Hagai Livni, Jinyu Han

Pardo, Bryan

349

College of Engineering and Computing Endowed Chair Search: Center for Economic Excellence for the Hydrogen Economy  

E-print Network

College of Engineering and Computing Endowed Chair Search: Center for Economic Excellence, Department of Chemical Engineering, University of South Carolina, Columbia, SC 29208 via ChemEngSearch Economy, the Department of Chemical Engineering in College of Engineering and Computing at the University

Almor, Amit

350

An efficient quantum search engine on unsorted database  

NASA Astrophysics Data System (ADS)

We consider the problem of finding one or more desired items out of an unsorted database. Patel has shown that if the database permits quantum queries, then mere digitization is sufficient for efficient search for one desired item. The algorithm, called factorized quantum search algorithm, presented by him can locate the desired item in an unsorted database using O() queries to factorized oracles. But the algorithm requires that all the attribute values must be distinct from each other. In this paper, we discuss how to make a database satisfy the requirements, and present a quantum search engine based on the algorithm. Our goal is achieved by introducing auxiliary files for the attribute values that are not distinct, and converting every complex query request into a sequence of calls to factorized quantum search algorithm. The query complexity of our algorithm is O() for most cases.

Lu, Songfeng; Zhang, Yingyu; Liu, Fang

2013-10-01

351

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

352

The effect of humidity on engine power at altitude  

NASA Technical Reports Server (NTRS)

From tests made in the altitude chamber of the Bureau of Standards, it was found that the effect of humidity on engine power is the same at altitudes up to 25,000 feet as at sea level. Earlier tests on automotive engines, made under sea-level conditions, showed that water vapor acts as an inert diluent, reducing engine power in proportion to the amount of vapor present. By combining the effects of atmospheric pressure, temperature, and humidity, it is shown that the indicated power obtainable from an engine is proportional to its mass rate of consumption of oxygen. This has led the National Advisory Committee for Aeronautics to adopt a standard basis for the correction of engine performance, in which the effect of humidity is included.

Brooks, D G; Garlock, E A

1933-01-01

353

The Power of Aircraft Engines at Altitude  

NASA Technical Reports Server (NTRS)

The subject of the present paper is confined to the investigations and methods employed by the Fiat company in their studies on the altitude performance of an air-cooled engine of the production type. The experimental set-up as well as test engine data are provided.

Ragazzi, Paolo

1939-01-01

354

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 ­ 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

355

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 ­ 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

356

Power quality research and education: A new power engineer for today’s energy challenges  

Microsoft Academic Search

This paper presents how power quality activities were used as catalyst for the development and renovation of power engineering research and education at the University of Puerto Rico-Mayaguez. The ultimate goal was to provide students with opportunities to learn about power quality and related areas, as well as training future professionals in the energy field. The multidisciplinary nature of power

E. O'Neill-Carrillo

2008-01-01

357

Arctic Data Explorer: A Rich Solr Powered Metadata Search Portal  

NASA Astrophysics Data System (ADS)

The Advanced Cooperative Arctic Data and Information Service (ACADIS) manages data and is the gateway for all relevant Arctic physical, life, and social science data for the Arctic Sciences (ARC) research community. Arctic Data Explorer (ADE), developed by the National Snow and Ice Data Center (NSIDC) under the ACADIS umbrella, is a data portal that provides users the ability to search across multiple Arctic data catalogs rapidly and precisely. In order to help the users quickly find the data they are interested in, we provided a simple search interface -- a search box with spatial and temporal options. The core of the interface is a ';google-like' single search box with logic to handle complex queries behind the scenes. ACADIS collects all metadata through the GI-Cat metadata broker service and indexes it in Solr. The single search box is implemented as a text based search utilizing the powerful tools provided by Solr. In this poster, we briefly explain Solr's indexing and searching capabilities. Several examples are presented to illustrate the rich search functionality the simple search box supports. Then we dive into the implementation details such as how phrase query, wildcard query, range query, fuzzy query and special query search term handling was integrated into ADE search. To provide our users the most relevant answers to their queries as quickly as possible, we worked with the Advisory Committee and the expanding Arctic User Community (scientists and data experts) to collect feedback to improve the search results and adjust the relevance/ranking logic to return more precise search results. The poster has specific examples on how we tuned the relevance ranking to achieve higher quality search results. A feature in the plan is to provide data sets recommendations based on user's current search history. Both collaborative filtering and content-based approaches were considered and researched. A feasible solution is proposed based on the content-based approach.

Liu, M.; Truslove, I.; Yarmey, L.; Lopez, L.; Reed, S. A.; Brandt, M.

2013-12-01

358

The Base Engine for Solar Stirling Power  

NASA Technical Reports Server (NTRS)

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. Remote-heating technology is incorporated with a stacked-heat-exchanger configuration and a liquid metal heat pipe connected to a distinctly separate combustor or other heat source. High efficiency over a wide range of operating conditions, long life, low manufacturing cost and low material cost are specifically emphasized. The base engine, its design philosophy and approach, its projected performance, and some of its more attractive applications are described.

Meijer, R. J.; Godett, T. M.

1984-01-01

359

ExSearch: a novel vertical search engine for online barter business  

Microsoft Academic Search

E-Commerce has shown its exponentially-growing business value in the past decade. However, in contrast to the successful examples in online sales, such as Amazon1 and eBay2, the online barter business is still underexplored due to the lack of corresponding information aggregation service. In this paper, we design and implement a novel vertical search engine, called ExSearch, to aggregate online barter

Lei Ji; Jun Yan; Ning Liu; Wen Zhang; Weiguo Fan; Zheng Chen

2009-01-01

360

Carbon Monoxide Hazards from Small Gasoline Powered Engines  

MedlinePLUS

... Provide recommendations for equipment maintenance to reduce CO emissions. Recommend the use of portable, audible CO monitors with small gasoline-powered engines. NIOSH Publications ALERT: Preventing Carbon Monoxide ...

361

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 of Vivisimo.com, which is a Web meta-search engine that dynamically clusters users' search results on repeat users of the search engine are reported. These results provide insights into search

Jansen, James

362

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

363

A personalized search engine based on web-snippet hierarchical clustering  

Microsoft Academic Search

In this paper we propose a hierarchical clustering engine, called snaket, that is able to organize on-the-fly the search results drawn from 16 commodity search engines into a hierarchy of labeled folders. The hierarchy offers a complementary view to the flat-ranked list of results returned by current search engines. Users can navigate through the hierarchy driven by their search needs.

Paolo Ferragina; Antonio Gulli

2005-01-01

364

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

365

Electric Power Engineering Education Resources - 1979-80  

Microsoft Academic Search

This sixth biennial (1,2,3,4,5,6) committee report compiles the results of a survey of Electric Power Engineering Education Resources at ECPD\\/ABET (Engineers Council for Professional Development\\/Accreditation Board for Engineering anid Technology) accredited universities in the United States of America for the academic year 1979-80. The report contains a list of faculty active during the subject year, their level of academic participation

1981-01-01

366

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

367

Oriented Engineering Application for Voltage Security Analysis of Power Systems  

Microsoft Academic Search

This paper deals with oriented engineering application of voltage security analysis of large-scale power systems, including engineering criterion of voltage security, principal objective, and systematic procedure of voltage security assessment. A systematic approach to voltage security assessment is presented in this paper. Example of Yunnan grid voltage security analysis using systematic voltage security analysis method is presented

Zhou Xia; Li Bi-jun; Li Wen-yun; Wu Chen; Xu Tai-shan; Ren Xian-cheng

2006-01-01

368

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

369

Mobile hydraulic power supply: Liquid piston Stirling engine pump  

Microsoft Academic Search

Conventional mobile hydraulic power supplies involve numerous kinematic connections and are limited by the efficiency, noise, and emissions of internal combustion engines. The Stirling cycle possesses numerous benefits such as the ability to operate from any heat source, quiet operation, and high theoretical efficiency. The Stirling engine has seen limited success due to poor heat transfer in the working chambers,

James D. Van de Ven

2009-01-01

370

Tests Of A Stirling-Engine Power Converter  

NASA Technical Reports Server (NTRS)

Report describes acceptance tests of power converter consisting of pair of opposed free-piston Stirling engines driving linear alternators. Stirling engines offer potential for extremely long life, high reliability, high efficiency at low hot-to-cold temperature ratios, and relatively low heater-head temperatures.

Dochat, George

1995-01-01

371

Advanced catalytic converter system for natural gas powered diesel engines  

Microsoft Academic Search

The paper discusses the development of catalytic converter for aftertreatment of exhaust gas from diesel engines powered with natural gas. The converter, operated with periodical reversals of the flow, ensures destruction of CO and hydrocarbons, including methane. Both computer simulation and engine testing results are presented.

Vadim O. Strots; Grigorii A. Bunimovich; Yurii Sh. Matros; Ming Zheng; Edward A. Mirosh

1998-01-01

372

A New Approach for Scoring Relevant Documents by Applying a Farsi Stemming Method in Persian Web Search Engines  

NASA Astrophysics Data System (ADS)

In this paper, we will introduce a new approach for scoring Farsi (also called Persian) documents in a Persian Search engine. This approach is based on a new stemming method for Farsi language. Our new stemming method works without any dictionary. Evaluation results show significant improvement in performance (precision/ recall) of the Information Retrieval (IR) system using this stemmer. we have combine our stemming method with a mathematical scoring approach named FDS to obtain a powerful scoring policy for relevant documents in a Persian search engine.

Shahbazi, Hamed; Mokhtaripour, Alireza; Dalvi, Mohammad; Tork Ladani, Behrouz

373

Solar power satellites - Heat engine or solar cells  

NASA Technical Reports Server (NTRS)

A solar power satellite is the energy-converting element of a system that can deliver some 10 GW of power to utilities on the earth's surface. We evaluated heat engines and solar cells for converting sunshine to electric power at the satellite. A potassium Rankine cycle was the best of the heat engines, and 50 microns thick single-crystal silicon cells were the best of the photovoltaic converters. Neither solar cells nor heat engines had a clear advantage when all factors were considered. The potassium-turbine power plant, however, was more difficult to assemble and required a more expensive orbital assembly base. We therefore based our cost analyses on solar-cell energy conversion, concluding that satellite-generated power could be delivered to utilities for around 4 to 5 cents a kWh.

Oman, H.; Gregory, D. L.

1978-01-01

374

Faculty of Engineering & Design BEng(Hons) Electrical Power Engineering  

E-print Network

(Hons) Electrical and Electronic Engineering NCEPU and the University of Bath, UK 2 Introduction This elite 2 to graduate with two degrees, one from the University of Bath, UK and the other from NCEPU, China. After two this programme for NCEPU students to transfer to the University of Bath after year two of their study in China

Burton, Geoffrey R.

375

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

376

GENIE: A General Internet Search Engine for Atomic Data  

NSDL National Science Digital Library

The Atomic and Molecular Data Unit, which operates within the Nuclear Data Section of the International Atomic Energy Agency in Vienna, Austria, maintains the General Internet Search Engine for Atomic Data (GENIE). The tool allows users to choose from two data types. The first is Oscillator Strengths and/or Transition Probabilities, which includes six databases. Users can specify the ion and the upper and lower wavelength limit. The other data is entitled Electron Impact Cross Sections and/or Rate Coefficients and contains two databases. For these data, users can choose the ion and the process of electron impact as either excitation or ionization. The ease of use and wealth of information that can be obtained from the search engine makes it a great tool for those looking for these specific data types.

377

GENIE: A General Internet Search Engine for Atomic Data  

NSDL National Science Digital Library

The Atomic and Molecular Data Unit, which operates within the Nuclear Data Section of the International Atomic Energy Agency in Vienna, Austria, maintains the General Internet Search Engine for Atomic Data (GENIE). The tool allows users to choose from two data types. The first is Oscillator Strengths and/or Transition Probabilities, which includes six databases. Users can specify the ion and the upper and lower wavelength limit. The other data is entitled Electron Impact Cross Sections and/or Rate Coefficients and contains two databases. For these data, users can choose the ion and the process of electron impact as either excitation or ionization. The ease of use and wealth of information that can be obtained from the search engine makes it a great tool for those looking for these specific data types.

1969-12-31

378

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

379

Searching the Web with an FPGA Based Search Engine  

Microsoft Academic Search

In this paper we describe an FPGA implementation for solving Internet ranking algorithms. Sparse Matrix by Vector multiplication\\u000a forms a major part of these algorithms. Due to memory bandwidth problems, general purpose processors only achieve a fraction\\u000a of peak processing power when dealing with sparse matrices. Field-Programmable Gate Arrays (FPGAs) have the potential to significantly\\u000a improve this performance. In order

Séamas Mcgettrick; Dermot Geraghty; Ciarán Mcelroy

2007-01-01

380

A search engine for auroral forms  

NASA Astrophysics Data System (ADS)

The Finnish Meteorological Institute operates five digital all-sky cameras, which routinely monitor the auroral emissions in Northern Finland, Sweden, and Svalbard; each camera records an image of the full sky at 20-s interval at a resolution of 512 × 512 pixels. As a result, over 2.5 million images are recorded each winter. We demonstrate a syntactic pattern recognition algorithm for searching auroral arcs in the all-sky images. The algorithm operates in two phases: a quicksearch and a detection phase. The quicksearch is based on simple correlation to a model arc and is utilised to scan through the database to locate potential auroras. In the detection, an auroral image skeleton is determined, and, based on the shape skeleton, auroral forms known as "arcs" are located. A quality estimate is calculated for each arc. Trial runs indicate that the algorithms developed can be implemented in real-time at the auroral all-sky stations.

Syrjäsuo, M. T.; Kauristie, K.; Pulkkinen, T. I.

2001-01-01

381

Power Systems Engineering Research Center PSERC Background Paper  

E-print Network

to the control center operators and security coordinators, or to the computers that can detect anomalous patterns that operators on different control centers on different parts of the grid can communicate intelligentlyPower Systems Engineering Research Center PSERC Background Paper Monitoring and Control of Power

382

Power Systems Engineering Research Center PSERC Background Paper  

E-print Network

in planning and operation of the electric grid to determine secure operating limits for how much power canPower Systems Engineering Research Center PSERC Background Paper Analyzing Blackout Events-mortem studies of the two 1996 blackout events as an invited member of the Operating Capability Study Group which

383

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

384

Course Outline: ENGINEER 2MM3 Electrical Circuits & Power  

E-print Network

Graw Hill, Fourth Edition, 2005. Reference Book: T. Wildi, Electrical machines, drives and power systems Page: www.ece.mcmaster.ca/~kumars/eng_2mm3 Text Book: S.J. Chapman, Electric Machinery Fundamentals, McCourse Outline: ENGINEER 2MM3 Electrical Circuits & Power Fall 2013 Instructor: Shiva Kumar Web

Haykin, Simon

385

Power Systems Engineering Research Center Education for Workforce Development  

E-print Network

an online library of short (i.e., 15-20 minute) videos on various topics of sustainable energy systemsPower Systems Engineering Research Center Education for Workforce Development: A PSERC Future Grid of the emerging power grid with heavy penetration of renewables and massive deployment of computer

Van Veen, Barry D.

386

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

387

An Evaluation of Major Image Search Engines on Various Query Topics  

Microsoft Academic Search

This paper investigates the information retrieval effectiveness of major image search engines based on various query topics. Initially, major image search engines, namely, Google, Yahoo, Ask and MSN are selected. Then, seven appropriate topics are determined from the categories of the top search terms used on the web and five queries per topic are chosen. Each query is run on

E. Cakir; H. Bahceci; Y. Bitirim

2008-01-01

388

The effect of brand awareness on the evaluation of search engine results  

Microsoft Academic Search

In this paper we investigate the effect of search engine brand (i.e., identifying name that distinguishes a product from its competitors) on evaluation of system performance. Our research is motivated by the large amount of search traffic directed to less than a handful of Web search engines, even though many are of equal technical quality with similar interfaces. We conducted

Bernard J. Jansen; Mimi Zhang; Ying Zhang

2007-01-01

389

The effectiveness of Web search engines for retrieving relevant ecommerce links  

E-print Network

The effectiveness of Web search engines for retrieving relevant ecommerce links Bernard J. Jansen a of five types of search engines in their retrieval of relevant links for ecommerce queries. Our study also evaluates user-determined relevancy for specified search results in response to particular ecommerce queries

Jansen, James

390

Exploring Cost-Effective Approaches to Human Evaluation of Search Engine Relevance  

Microsoft Academic Search

In this paper, we examine novel and less expensive methods for search engine evaluation that do not rely on document relevance judgments. These methods, described within a proposed framework, are motivated by the increasing focus on search results presentation, by the growing diversity of documents and content sources, and by the need to measure effectiveness relative to other search engines.

Kamal Ali; Chi-chao Chang; Yun-fang Juan

2005-01-01

391

SASE: Implementation of a Compressed Text Search Engine Srinidhi Varadarajan Tzicker Chiueh  

E-print Network

in terms of raw speed as well as storage requirement, and has the capability of searching directly throughSASE: Implementation of a Compressed Text Search Engine Srinidhi Varadarajan Tzi­cker Chiueh)@cs.sunysb.edu http://www.ecsl.sunysb.edu/RFCSearch.html Abstract Keyword based search engines are the basic building

Chiueh, Tzi-cker

392

Travel queries on cities in the United States: Implications for search engine marketing for tourist destinations  

Microsoft Academic Search

Given the growing importance of search in online travel planning, marketers need to better understand the behavioural aspect of search engines use. Built upon a number of previous studies, the goal of this research is to identify patterns in online travel queries across tourist destinations. Utilizing transaction log files from a number of search engines, the analysis shows important patterns

Zheng Xiang; Bing Pan

2011-01-01

393

Travel Queries on Cities in the United States: Implications for Search Engine Marketing in Tourism  

Microsoft Academic Search

Given the growing importance of online search in travel planning, marketers need to better understand the behavioural aspect of travel planning using search engines. The goal of this study is to identify patterns in online travel-related queries across tourist destinations. Utilizing transaction log files from a number of search engines, the analysis indicates both commonalities and differences in online queries

Zheng Xiang; Bing Pan

2009-01-01

394

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

395

Integrating COTS Search Engines into Eclipse: Google Desktop Case Study Denys Poshyvanyk, Maksym Petrenko, Andrian Marcus  

E-print Network

Integrating COTS Search Engines into Eclipse: Google Desktop Case Study Denys Poshyvanyk, Maksym (GDS) engine into the Eclipse development environment. The resulting tool, namely Google Eclipse Search (GES), provides enhanced searching in Eclipse software projects. The paper advocates for a COTS

Poshyvanyk, Denys

396

Power engineering at work, part I  

Microsoft Academic Search

Recent years have seen expansion into EHV transmission. The Department of Water and Power made the first excursion into voltages above 230 kv with the 287 kv transmission system linking Hoover Dam with Los Angeles. Systems are now being designed and built for 500 and 750 kv to handle large blocks of power and for long distance transmission. This has

1967-01-01

397

Efficiency at maximum power of thermally coupled heat engines.  

PubMed

We study the efficiency at maximum power of two coupled heat engines, using thermoelectric generators (TEGs) as engines. Assuming that the heat and electric charge fluxes in the TEGs are strongly coupled, we simulate numerically the dependence of the behavior of the global system on the electrical load resistance of each generator in order to obtain the working condition that permits maximization of the output power. It turns out that this condition is not unique. We derive a simple analytic expression giving the relation between the electrical load resistance of each generator permitting output power maximization. We then focus on the efficiency at maximum power (EMP) of the whole system to demonstrate that the Curzon-Ahlborn efficiency may not always be recovered: The EMP varies with the specific working conditions of each generator but remains in the range predicted by irreversible thermodynamics theory. We discuss our results in light of nonideal Carnot engine behavior. PMID:22680454

Apertet, Y; Ouerdane, H; Goupil, C; Lecoeur, Ph

2012-04-01

398

Transporting submarine engines to power the PRT  

NASA Technical Reports Server (NTRS)

Inside the test section of the PRT. Laid out on the floor are the myriad parts needed for the final assembly of the diesel engines. In the back right corner are scales that would be used in the tunnel's balance. The dolly near the door under the entrance cone is for an oxy-acetelyne welding apparatus.

1926-01-01

399

College of Engineering University of Canterbury Electric Power Engineering Centre  

E-print Network

Barry Ireland Transpower Rohan McGrath Unison Networks Ltd Nigel Purdy Electrix tba 6:25pm ­ 6:30pm Jay POWER SYSTEMS CONSULTANTS Barry Ireland TRANSPOWER Rohan McGrath UNISON NETWORKS LTD Nigel Purdy are passionate about creating a better energy future. 5) UNISON Nigel Purdy, Michelle Lyes, Andrew Gatland

Hickman, Mark

400

H-1 Engine Fired in Power Plant Test Stand  

NASA Technical Reports Server (NTRS)

This image depicts a firing of a single H-1 engine at the Marshall Space Flight Center's (MSFC's) Power Plant test stand. This 1950s test stand, inherited from the Army, was used to test fire engines until the Test Area was completed in the latter 1960s. The H-1 engine was the workhorse of the first Saturn launch vehicles and used in the Saturn I, Block 1 and II, and in the Saturn IB. The eight H-1 engines were attached to a thrust frame on the vehicle's aft end in two different ways. Four engines are rigidly attached to the inboard position and canted at a three degree angle to the long axis of the booster. The other four engines, mounted in the outboard position, are canted at six degrees.

1967-01-01

401

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

Code of Federal Regulations, 2012 CFR

... 2012-01-01 false Earthquake Engineering Criteria for Nuclear Power Plants ...Appendix S to Part 50—Earthquake Engineering Criteria for Nuclear Power Plants ...before January 10, 1997, the earthquake engineering criteria in Section VI of...

2012-01-01

402

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

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false Earthquake Engineering Criteria for Nuclear Power Plants ...Appendix S to Part 50—Earthquake Engineering Criteria for Nuclear Power Plants ...before January 10, 1997, the earthquake engineering criteria in Section VI of...

2010-01-01

403

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

Code of Federal Regulations, 2014 CFR

... 2014-01-01 false Earthquake Engineering Criteria for Nuclear Power Plants ...Appendix S to Part 50—Earthquake Engineering Criteria for Nuclear Power Plants ...before January 10, 1997, the earthquake engineering criteria in Section VI of...

2014-01-01

404

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

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Earthquake Engineering Criteria for Nuclear Power Plants ...Appendix S to Part 50—Earthquake Engineering Criteria for Nuclear Power Plants ...before January 10, 1997, the earthquake engineering criteria in Section VI of...

2013-01-01

405

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

Code of Federal Regulations, 2011 CFR

... 2011-01-01 false Earthquake Engineering Criteria for Nuclear Power Plants ...Appendix S to Part 50—Earthquake Engineering Criteria for Nuclear Power Plants ...before January 10, 1997, the earthquake engineering criteria in Section VI of...

2011-01-01

406

Curating the Web: Building a Google Custom Search Engine for the Arts  

ERIC Educational Resources Information Center

Google's first foray onto the web made search simple and results relevant. With its Co-op platform, Google has taken another step toward dramatically increasing the relevancy of search results, further adapting the World Wide Web to local needs. Google Custom Search Engine, a tool on the Co-op platform, puts one in control of his or her own search

Hennesy, Cody; Bowman, John

2008-01-01

407

EIIS: An Educational Information Intelligent Search Engine Supported by Semantic Services  

ERIC Educational Resources Information Center

The semantic web brings a new opportunity for efficient information organization and search. To meet the special requirements of the educational field, this paper proposes an intelligent search engine enabled by educational semantic support service, where three kinds of searches are integrated into Educational Information Intelligent Search (EIIS)…

Huang, Chang-Qin; Duan, Ru-Lin; Tang, Yong; Zhu, Zhi-Ting; Yan, Yong-Jian; Guo, Yu-Qing

2011-01-01

408

Exploiting Query Repetition and Regularity in an Adaptive Community-Based Web Search Engine  

Microsoft Academic Search

Search engines continue to struggle with the challenges presented by Web search: vague queries, impatient users and an enormous and rapidly expanding collection of unmoderated, heterogeneous documents all make for an extremely hostile search environment. In this paper we argue that conventional approaches to Web search -- those that adopt a traditional, document-centric, information retrieval perspective -- are limited by

Barry Smyth; Evelyn Balfe; Jill Freyne; Peter Briggs; Maurice Coyle; Oisín Boydell

2004-01-01

409

A Search Engine for Handwritten Documents Sargur Srihari, Chen Huang, Harish Srinivasan  

E-print Network

segmentation and recognition of characters and words. Several types of searches are permitted: (i) Word / Phrase Spotting; (ii) Text to Image Search; (iii) Plain Text Search; (iv) Word Recognition from LexiconA Search Engine for Handwritten Documents Sargur Srihari, Chen Huang, Harish Srinivasan Center

410

CO2 laser-driven Stirling engine. [space power applications  

NASA Technical Reports Server (NTRS)

A 100-W Beale free-piston Stirling engine was powered remotely by a CO2 laser for long periods of time. The engine ran on both continuous-wave and pulse laser input. The working fluid was helium doped with small quantities of sulfur hexafluoride, SF6. The CO2 radiation was absorbed by the vibrational modes of the sulfur hexafluoride, which in turn transferred the energy to the helium to drive the engine. Electrical energy was obtained from a linear alternator attached to the piston of the engine. Engine pressures, volumes, and temperatures were measured to determine engine performance. It was found that the pulse radiation mode was more efficient than the continuous-wave mode. An analysis of the engine heat consumption indicated that heat losses around the cylinder and the window used to transmit the beam into the engine accounted for nearly half the energy input. The overall efficiency, that is, electrical output to laser input, was approximately 0.75%. However, this experiment was not designed for high efficiency but only to demonstrate the concept of a laser-driven engine. Based on this experiment, the engine could be modified to achieve efficiencies of perhaps 25-30%.

Lee, G.; Perry, R. L.; Carney, B.

1978-01-01

411

Understanding Crowd-Powered Search Groups: A Social Network Perspective  

PubMed Central

Background Crowd-powered search is a new form of search and problem solving scheme that involves collaboration among a potentially large number of voluntary Web users. Human flesh search (HFS), a particular form of crowd-powered search originated in China, has seen tremendous growth since its inception in 2001. HFS presents a valuable test-bed for scientists to validate existing and new theories in social computing, sociology, behavioral sciences, and so forth. Methodology In this research, we construct an aggregated HFS group, consisting of the participants and their relationships in a comprehensive set of identified HFS episodes. We study the topological properties and the evolution of the aggregated network and different sub-groups in the network. We also identify the key HFS participants according to a variety of measures. Conclusions We found that, as compared with other online social networks, HFS participant network shares the power-law degree distribution and small-world property, but with a looser and more distributed organizational structure, leading to the diversity, decentralization, and independence of HFS participants. In addition, the HFS group has been becoming increasingly decentralized. The comparisons of different HFS sub-groups reveal that HFS participants collaborated more often when they conducted the searches in local platforms or the searches requiring a certain level of professional knowledge background. On the contrary, HFS participants did not collaborate much when they performed the search task in national platforms or the searches with general topics that did not require specific information and learning. We also observed that the key HFS information contributors, carriers, and transmitters came from different groups of HFS participants. PMID:22761888

Zhang, Qingpeng; Wang, Fei-Yue; Zeng, Daniel; Wang, Tao

2012-01-01

412

The Democratizing Effects of Search Engine Use: On Chance Exposures and Organizational Hubs  

Microsoft Academic Search

In this paper I highlight two implications of the widespread use of search engines, which are often overlooked by commentators.\\u000a In the first part of the paper I argue that search engines are conducive to unplanned exposures to diverse and even opposing\\u000a views. In the second part I argue that search engines indirectly contribute to emergent political organization, since they

Azi Lev-On

2008-01-01

413

A Longest Prefix Match Search Engine For Multi-Gigabit IP Processing  

Microsoft Academic Search

We propose an IP forwarding table search engine architecture, VLMP (vertical logical operation with mask-encoded prefix-length), for routers with multi-gigabit\\/sec speed links. We discuss the existing approaches and the requirements for search engines, and go on to propose VLMP search engine architecture that expands upon a content addressable memory (CAM) and can perform wire-speed packet processing of an OC-192 (9.6

Masayoshi Kobayashi; Tutomu Murase; Atsushi Kuriyama

2000-01-01

414

Solar-Powered Electric Propulsion Systems: Engineering and Applications  

NASA Technical Reports Server (NTRS)

Lightweight, multikilowatt solar power arrays in conjunction with electric propulsion offer potential improvements to space exploration, extending the usefulness of existing launch vehicles to higher-energy missions. Characteristics of solar-powered electric propulsion missions are outlined, and preliminary performance estimates are shown. Spacecraft system engineering is discussed with respect to parametric trade-offs in power and propulsion system design. Relationships between mission performance and propulsion system performance are illustrated. The present state of the art of electric propulsion systems is reviewed and related to the mission requirements identified earlier. The propulsion system design and test requirements for a mission spacecraft are identified and discussed. Although only ion engine systems are currently available, certain plasma propulsion systems offer some advantages in over-all system design. These are identified, and goals are set for plasma-thrustor systems to make them competitive with ion-engine systems for mission applications.

Stearns, J. W.; Kerrisk, D. J.

1966-01-01

415

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

416

33 CFR 209.140 - Operations of the Corps of Engineers under the Federal Power Act.  

Code of Federal Regulations, 2011 CFR

...Engineers under the Federal Power Act. 209.140 ...Navigation and Navigable Waters CORPS OF ENGINEERS...participate under the Federal Power Act. Such operations...licenses for development of power affecting navigable waters; supervision of...

2011-07-01

417

33 CFR 209.140 - Operations of the Corps of Engineers under the Federal Power Act.  

Code of Federal Regulations, 2013 CFR

...Engineers under the Federal Power Act. 209.140 ...Navigation and Navigable Waters CORPS OF ENGINEERS...participate under the Federal Power Act. Such operations...licenses for development of power affecting navigable waters; supervision of...

2013-07-01

418

33 CFR 209.140 - Operations of the Corps of Engineers under the Federal Power Act.  

Code of Federal Regulations, 2010 CFR

...Engineers under the Federal Power Act. 209.140 ...Navigation and Navigable Waters CORPS OF ENGINEERS...participate under the Federal Power Act. Such operations...licenses for development of power affecting navigable waters; supervision of...

2010-07-01

419

33 CFR 209.140 - Operations of the Corps of Engineers under the Federal Power Act.  

Code of Federal Regulations, 2014 CFR

...Engineers under the Federal Power Act. 209.140 ...Navigation and Navigable Waters CORPS OF ENGINEERS...participate under the Federal Power Act. Such operations...licenses for development of power affecting navigable waters; supervision of...

2014-07-01

420

33 CFR 209.140 - Operations of the Corps of Engineers under the Federal Power Act.  

Code of Federal Regulations, 2012 CFR

...Engineers under the Federal Power Act. 209.140 ...Navigation and Navigable Waters CORPS OF ENGINEERS...participate under the Federal Power Act. Such operations...licenses for development of power affecting navigable waters; supervision of...

2012-07-01

421

Sound power measurements on the M1E1 engine and total power pack  

NASA Astrophysics Data System (ADS)

A new technique to measure power was used to gather one-third octave emissions data on the M1E1 engine (AGT 1500) at the Stratford Army Engine Plant, CT and on the M1E1 power pack at Aberdeen Proving Ground, MD. To calculate sound power, acoustic intensity (the product of the scaler pressure and the vector velocity) was measured and integrated over an arbitrary surface enclosing the source. The data gathered and test results show this new technique is very powerful and robust and is applicable to many machinery quieting, source emission, or sound transmission measurements.

Schomer, P. D.

1983-05-01

422

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

423

Dynamics of a macroscopic model characterizing mutualism of search engines and web sites  

NASA Astrophysics Data System (ADS)

We present a model to describe the mutualism relationship between search engines and web sites. In the model, search engines and web sites benefit from each other while the search engines are derived products of the web sites and cannot survive independently. Our goal is to show strategies for the search engines to survive in the internet market. From mathematical analysis of the model, we show that mutualism does not always result in survival. We show various conditions under which the search engines would tend to extinction, persist or grow explosively. Then by the conditions, we deduce a series of strategies for the search engines to survive in the internet market. We present conditions under which the initial number of consumers of the search engines has little contribution to their persistence, which is in agreement with the results in previous works. Furthermore, we show novel conditions under which the initial value plays an important role in the persistence of the search engines and deduce new strategies. We also give suggestions for the web sites to cooperate with the search engines in order to form a win-win situation.

Wang, Yuanshi; Wu, Hong

2006-05-01

424

Presenting Results of a Search Engine for Recorded Lectures in order to Support Relevance Decisions by the User  

E-print Network

Presenting Results of a Search Engine for Recorded Lectures in order to Support Relevance Decisions for search engine interface design is to present the results in a way that supports the users in selecting engine for recorded lectures. An evaluation with different user interfaces for such a search engine

HĂĽrst, Wolfgang

425

Application of the subatmospheric engine to solar thermal power  

NASA Technical Reports Server (NTRS)

The development of a natural gas-fired Brayton engine is discussed. It is intended to be the prime mover for a 10-ton commercial heat pump. This engine has many attractive features that make it an ideal candidate for solar thermal-power generation applications. The unique feature of this engine is its subatmospheric mode of operation. It operates between atmospheric pressure and a partial vacuum. This means that heat is added to the cycle at atmospheric pressure; this permits the receiver to be unpressurized, greatly simplifying its design and cost.

1982-01-01

426

Inside the supernova a powerful convective engine  

E-print Network

We present an extensive study of the inception of supernova explosions by following the evolution of the cores of two massive stars (15 Msun and 25 Msun) in two dimensions. Our calculations begin at the onset of core collapse and stop several 100 ms after the bounce, at which time successful explosions of the appropriate magnitude have been obtained. (...) Guided by our numerical results, we have developed a paradigm for the supernova explosion mechanism. We view a supernova as an open cycle thermodynamic engine in which a reservoir of low-entropy matter (the envelope) is thermally coupled and physically connected to a hot bath (the protoneutron star) by a neutrino flux, and by hydrodynamic instabilities. (...) In essence, a Carnot cycle is established in which convection allows out-of-equilibrium heat transfer mediated by neutrinos to drive low entropy matter to higher entropy and therefore extracts mechanical energy from the heat generated by gravitational collapse. We argue that supernova explosions are ne...

Herant, M; Hix, W R; Fryer, C F; Colgate, S A; Marc Herant; Willy Benz; Chris F Fryer; Stirling Colgate

1994-01-01

427

Solar powered free-piston stirling engine  

SciTech Connect

A method of controlling the operation of a free piston Stirling engine including a displacer piston having an integral electrical linear driver, an alternator piston driven by the displacer piston and including means for generating an electric current and variable volume gas springs in the cylinders for the displacer and alternator piston is described comprising the steps of: sensing the output voltage if the generated electric current; controlling the movement of the displacer piston by varying the volume of the gas spring in the displacer cylinder and the status of linear driver responsively to the sensed output voltage; sensing the frequency of the linear driver responsively to the sensed output voltage; sensing the frequency of the alternator piston; and controlling the frequency of the alternator piston by varying the volume of the gas spring of the alternator cylinder responsive to the sensed frequency.

Benson, G.M.

1988-05-24

428

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

429

14 CFR 33.96 - Engine tests in auxiliary power unit (APU) mode.  

Code of Federal Regulations, 2011 CFR

... Engine tests in auxiliary power unit (APU) mode. 33.96... Engine tests in auxiliary power unit (APU) mode. If...brought to a stop while the gas generator portion of the engine remains...of the engine as an auxiliary power unit (“APU mode”),...

2011-01-01

430

14 CFR 33.96 - Engine tests in auxiliary power unit (APU) mode.  

Code of Federal Regulations, 2012 CFR

... Engine tests in auxiliary power unit (APU) mode. 33.96... Engine tests in auxiliary power unit (APU) mode. If...brought to a stop while the gas generator portion of the engine remains...of the engine as an auxiliary power unit (“APU mode”),...

2012-01-01

431

14 CFR 33.96 - Engine tests in auxiliary power unit (APU) mode.  

Code of Federal Regulations, 2013 CFR

... Engine tests in auxiliary power unit (APU) mode. 33.96... Engine tests in auxiliary power unit (APU) mode. If...brought to a stop while the gas generator portion of the engine remains...of the engine as an auxiliary power unit (“APU mode”),...

2013-01-01

432

14 CFR 33.96 - Engine tests in auxiliary power unit (APU) mode.  

Code of Federal Regulations, 2010 CFR

... Engine tests in auxiliary power unit (APU) mode. 33.96... Engine tests in auxiliary power unit (APU) mode. If...brought to a stop while the gas generator portion of the engine remains...of the engine as an auxiliary power unit (“APU mode”),...

2010-01-01

433

14 CFR 33.96 - Engine tests in auxiliary power unit (APU) mode.  

Code of Federal Regulations, 2014 CFR

... Engine tests in auxiliary power unit (APU) mode. 33.96... Engine tests in auxiliary power unit (APU) mode. If...brought to a stop while the gas generator portion of the engine remains...of the engine as an auxiliary power unit (“APU mode”),...

2014-01-01

434

Stochastic Background Search Correlating ALLEGRO with LIGO Engineering Data  

E-print Network

We describe the role of correlation measurements between the LIGO interferometer in Livingston, LA, and the ALLEGRO resonant bar detector in Baton Rouge, LA, in searches for a stochastic background of gravitational waves. Such measurements provide a valuable complement to correlations between interferometers at the two LIGO sites, since they are sensitive in a different, higher, frequency band. Additionally, the variable orientation of the ALLEGRO detector provides a means to distinguish gravitational wave correlations from correlated environmental noise. We describe the analysis underway to set a limit on the strength of a stochastic background at frequencies near 900 Hz using ALLEGRO data and data from LIGO's E7 Engineering Run.

John T Whelan; Edward Daw; Ik Siong Heng; Martin P McHugh; Albert Lazzarini

2003-08-14

435

Searching the Internet Part I: Some Basic Considerations and Automated Search Indexes  

NSDL National Science Digital Library

This guide to finding resources on the Internet describes the many Web search engines available, their respective powers and disadvantages, and gives advice to users hoping to use the search engines effectively.

Solock, Jack.

436

DMBC: SEO (Search Engine Optimization) search engines in a natural, non-promoted or advertised way.  

E-print Network

A holistic approach to the development of a website. Design & content, social media, and beyond are all priority in search results ontrol: Low e you linking to? Embrace relevant and meaningful social media and purposes. Link Building ­ All social media should point back to your homepage · inks: Add additional

Stowell, Michael

437

Engineering study for the phase 1 privatization facilities electrical power  

SciTech Connect

This engineering study evaluates the availability of electric power from the existing 13.8 kV substation, BPA 115 kV system,and RL 230 kV transmission line; for supporting the Privatization Phase I Facilities. 230 kV system is a preferable alternative.

Singh, G., Westinghouse Hanford

1996-07-18

438

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

439

Application of industrial engineering techniques to improving power plant productivity  

Microsoft Academic Search

The manner in which the Arizona Public Service Company is applying industrial engineering techniques to increase power plant productivity is discussed in depth. The emphasis of these techniques has been placed on the Critical Path Method and modular controlled work sampling. The actual savings described were achieved at a fossil-fired generating plant. However, the concepts, once properly developed, are applicable

Shurtz

1978-01-01

440

1. Photocopied from photo 25797, Engineering Dept., Utah Power and ...  

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

1. Photocopied from photo 25797, Engineering Dept., Utah Power and Light Co., Salt Lake City, Utah. 'WHEELON HYDRO-ELECTRIC PLANT (1725 KW) STATION, WEST PENSTOCK, 130 KV TRANSFORMERS AND SWITCHYARD AND EAST AND WEST CANALS. NOV 1914.' - Utah Sugar Company, Wheelon Hydoelectric Plant, Bear River, Fielding, Box Elder County, UT

441

Space Power Demonstration Engine linear alternator dynamometer test results  

Microsoft Academic Search

To verify the alternator bench test and finite element code results, it was decided to test the Space Power Demonstration Engine (SPDE) alternator on a linear dynamometer. The dynamometer tests confirmed that the primary source of losses in the SPDE alternator assembly was the adjacent magnetic structure and not the alternator proper. Alternator efficiency above 90% was demonstrated by substitution

M. Dhar; J. Rauch; S. Huang; R. Bolton

1989-01-01

442

Introducing power electronics technologies into the aerospace engineering undergraduate curriculum  

Microsoft Academic Search

Power electronics technologies play a vital role in the aerospace industry in the years to come and all emerging technologies are already an important part of the industry either at R&D or in many cases production level. It is recognised that aerospace engineering and avionics students need to be aware of these technologies and in a position to work as

Vassilios G. Agelidis

2004-01-01

443

Socially-Relevant Capstone Design Projects in Power Engineering  

Microsoft Academic Search

Senior design projects can be a way to bring the university closer to societal needs. This paper describes how the senior capstone design courses in power engineering developed at the University of Puerto Rico-Mayagiiez (UPRM) strive to provide a service to society. These projects deal with societal needs, and are part of design courses that culminate the major design experience

E. O. Neill-Carrillo; A. A. Irizarry-Rivera

2006-01-01

444

Power Systems Engineering Research Center Renewable Electricity Futures  

E-print Network

Power Systems Engineering Research Center Renewable Electricity Futures Trieu Mai Electricity of the extent to which renewable energy supply can meet the electricity demands of the contiguous United States renewable electricity generation levels: from 30% up to 90% (focusing on 80%) of all U.S. electricity

Van Veen, Barry D.

445

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

446

Rankine-Brayton engine powered solar thermal aircraft  

DOEpatents

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 it so that heat is supplied from the thermal battery to a working fluid. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2009-12-29

447

Rankline-Brayton engine powered solar thermal aircraft  

DOEpatents

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 it so that heat is supplied from the thermal battery to a working fluid. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2012-03-13

448

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

449

Index Compression and Efficient Query Processing in Large Web Search Engines  

ERIC Educational Resources Information Center

The inverted index is the main data structure used by all the major search engines. Search engines build an inverted index on their collection to speed up query processing. As the size of the web grows, the length of the inverted list structures, which can easily grow to hundreds of MBs or even GBs for common terms (roughly linear in the size of…

Ding, Shuai

2013-01-01

450

Targeting an Audience of Robots: Search Engines and the Marketing of Technical Communication Business Websites  

Microsoft Academic Search

This paper explores the extent to which technical communication businesses with Websites are attempting to reach an audience of prospective clients through an intermediary audience of search engines. It draws on a survey of 240 principals of these businesses, brief interviews with half of them, and an analysis of their sites. Results show that search engines are among the most

John B. Killoran

2009-01-01

451

Cache Design of SSD-based Search Engine Architectures: An Experimental Study  

E-print Network

A Cache Design of SSD-based Search Engine Architectures: An Experimental Study JIANGUO WANG disk drive (HDD). Recently, solid state drive (SSD) has emerged as a new kind of secondary storage medium, and some search engines like Baidu have already used SSD to completely replace HDD

Yiu, Man Lung

452

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

453

WebSeer: An Image Search Engine for the World Wide Web1  

Microsoft Academic Search

Because of the size of the World Wide Web and its inherent lack of structure, finding what one is looking for can be a challenge. PC-Meter's March, 1996, survey found that three of the five most visited Web sites were search engines. However, while Web pages typically contain both text and images, all the currently available search engines only index

Charles Frankel; Michael J. Swain; Vassilis Athitsos

1996-01-01

454

Design of personalized search engine based on user-webpage dynamic model  

NASA Astrophysics Data System (ADS)

Personalized search engine focuses on establishing a user-webpage dynamic model. In this model, users' personalized factors are introduced so that the search engine is better able to provide the user with targeted feedback. This paper constructs user and webpage dynamic vector tables, introduces singular value decomposition analysis in the processes of topic categorization, and extends the traditional PageRank algorithm.

Li, Jihan; Li, Shanglin; Zhu, Yingke; Xiao, Bo

2013-12-01

455

A Self-Organizing Search Engine for RSS Syndicated Web Contents  

Microsoft Academic Search

The exponentially growing information published on the Web relies largely on a few major search engines like Google to be brought to the public nowadays. This raises issues such as: 1. how many percents of coverage do these search engines provide for the whole shared contents over the Internet? 2. how easy is it to find less popular contents from

Ying Zhou; Xin Chen; Chen Wang

2006-01-01

456

Shame to be Sham: Addressing Content-Based Grey Hat Search Engine Optimization  

E-print Network

Shame to be Sham: Addressing Content-Based Grey Hat Search Engine Optimization Fiana Raiber of content- based grey hat search engine optimization, in which a Web page contains both potentially relevant to minimize the effect of potential adversarial methods. A distinction is made between white hat SEO, which

Kurland, Oren

457

The Effect of Brand Awareness on the Evaluation of Search Engine Results  

E-print Network

their perceptions of mental demand. While there may be some recognition that branding is important in the marketingThe Effect of Brand Awareness on the Evaluation of Search Engine Results AbstractBernard J. Jansen.edu In this paper we investigate the effect of search engine brand (i.e., identifying name that distinguishes

Jansen, James

458

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

459

Characterizing Interdisciplinarity of Researchers and Research Topics Using Web Search Engines  

Microsoft Academic Search

Researchers' networks have been subject to active modeling and analysis. Earlier literature mostly focused on citation or co-authorship networks reconstructed from annotated scientific publication databases, which have several limitations. Recently, general-purpose web search engines have also been utilized to collect information about social networks. Here we reconstructed, using web search engines, a network representing the relatedness of researchers to their

Hiroki Sayama; Jin Akaishi

2012-01-01

460

A Comparison of Information Seeking Using Search Engines and Social Networks Meredith Ringel Morris1  

E-print Network

, is to pose a question to one's online social network. In this paper, we explore the pros and cons information may not be readily available online. An alternative, facilitated by the rise of social media online. Social search can involve the use of search engines, if the engine indexes social media (e

461

Electric Power Engineer Fostering Program based on a New Conceptual Model of Engineers' Ability  

NASA Astrophysics Data System (ADS)

We made a new fostering program for electric power engineer aiming to win market and to reduce management risk. The program is based on the best learning method of three skills of Robert L Katz (1)----expansion of human skill and conceptual skill put together at expansion speed of technical skill---- from four study verification results. This method is applied to the electric power engineer, and confirmed by Kirkpatrick level II.(2) It is thought that the above-mentioned two problems can be cleared by achieving the result which will correspond to level III and IV in the near future.

Amano, Minoru; Katabami, Tsutomu; Yokosawa, Hiroyuki; Akamine, Yotaro

462

Internet learning agents: a study of user performance with selected search engines  

Microsoft Academic Search

Searching for information on the Internet differs in significant ways. To adequately support retrieval tasks, search engines require an array of emerging technologies. As supporting tools, they are of great value to the user by providing relevant results specific to a given query. This study examined Internet agents from the perspective of fixed learning and evolutionary learning with selected search

Mina Richards

2005-01-01

463

Google's PageRank and Beyond: The Science of Search Engine Rankings  

E-print Network

to Information Retrieval · Elements of a Search Engine · Link Analysis · Current Issues in Web Search · Page Computer 1960s Salton's SMART system 1989 Berner-Lee's WWW #12;the pre-1998 Web Yahoo · hierarchies in User Attitudes about Web Search Today · "It's not my homepage, but it might as well be. I use it to ego

Kunkle, Tom

464

Key Techniques of Uyghur, Kazak, Kyrgyz Full-text Search Engine Retrieval Server  

Microsoft Academic Search

(Abstract)This paper studies the key problems of Uyghur, Kazak, Kyrgyz full-text search engine retrieval server and proposes an effective solution, including inputting Uyghur, Kazak, Kyrgyz keywords and shows normal search results without installing the local input method in users' computers, detecting and correcting Uyghur, Kazak, Kyrgyz keywords with high spelling mistake rate, returning the correct and comprehensive search results to

TURDI Tohti; WINIRA Musajan; ASKAR Hamdulla

2008-01-01

465

A Comparison of Information Seeking Using Search Engines and Social Networks  

Microsoft Academic Search

The Web has become an important information repository; often it is the first source a person turns to with an informa tion need. One common way to search the Web is with a search engine. However, it is not always easy for people to find what they are looking for with keyword search, and at times the desired information may

Meredith Ringel Morris; Jaime Teevan; Katrina Panovich

466

A Comparison of Information Seeking Using Search Engines and Social Networks  

Microsoft Academic Search

The Web has become an important information repository; often it is the first source a person turns to with an informa- tion need. One common way to search the Web is with a search engine. However, it is not always easy for people to find what they are looking for with keyword search, and at times the desired information may

Meredith Ringel Morris; Jaime Teevan; Katrina Panovich

2010-01-01

467

One for all, and all for one? Identifying clusters of user behaviour in intranet search engine log files  

Microsoft Academic Search

In recent years a substantial amount of research has been focusing on how ordinary web users interact with search engines. However, these users are tacitly assumed to be a homogeneous group by researcher and vendor alike. We argue that search engine users should not be treated collectively and by applying automatic clustering technique based on self-organising maps to search engine

Dick Stenmark; Henrik Strindberg

468

The Extreme Searcher's Guide to Web Search Engines: A Handbook for the Serious Searcher. 2nd Edition.  

ERIC Educational Resources Information Center

This book aims to facilitate more effective and efficient use of World Wide Web search engines by helping the reader: know the basic structure of the major search engines; become acquainted with those attributes (features, benefits, options, content, etc.) that search engines have in common and where they differ; know the main strengths and…

Hock, Randolph

469

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 substructures. Search engines have been developed to use this data tree to enable query on inhibitors of HIV protease (http://xpdb.nist. gov/hivsdb/hivsdb.html). These search engines use a new novel technique

470

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

471

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

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Supplemental oxygen: Reciprocating engine powered airplanes...Requirements § 121.327 Supplemental oxygen: Reciprocating engine powered airplanes...General. Except where supplemental oxygen is provided in accordance with §...

2013-01-01

472

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

Code of Federal Regulations, 2012 CFR

... 2012-01-01 false Supplemental oxygen for sustenance: Turbine engine powered...Requirements § 121.329 Supplemental oxygen for sustenance: Turbine engine powered...shall equip the airplane with sustaining oxygen and dispensing equipment for use as...

2012-01-01

473

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

Code of Federal Regulations, 2012 CFR

... 2012-01-01 false Supplemental oxygen: Reciprocating engine powered airplanes...Requirements § 121.327 Supplemental oxygen: Reciprocating engine powered airplanes...General. Except where supplemental oxygen is provided in accordance with §...

2012-01-01

474

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

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Supplemental oxygen for sustenance: Turbine engine powered...Requirements § 121.329 Supplemental oxygen for sustenance: Turbine engine powered...shall equip the airplane with sustaining oxygen and dispensing equipment for use as...

2013-01-01

475

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

Code of Federal Regulations, 2011 CFR

... 2011-01-01 false Supplemental oxygen for sustenance: Turbine engine powered...Requirements § 121.329 Supplemental oxygen for sustenance: Turbine engine powered...shall equip the airplane with sustaining oxygen and dispensing equipment for use as...

2011-01-01

476

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

Code of Federal Regulations, 2010 CFR

... 2010-01-01 false Supplemental oxygen: Reciprocating engine powered airplanes...Requirements § 121.327 Supplemental oxygen: Reciprocating engine powered airplanes...General. Except where supplemental oxygen is provided in accordance with §...

2010-01-01

477

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

Code of Federal Regulations, 2014 CFR

... 2014-01-01 false Supplemental oxygen: Reciprocating engine powered airplanes...Requirements § 121.327 Supplemental oxygen: Reciprocating engine powered airplanes...General. Except where supplemental oxygen is provided in accordance with §...

2014-01-01

478

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

Code of Federal Regulations, 2014 CFR

... 2014-01-01 false Supplemental oxygen for sustenance: Turbine engine powered...Requirements § 121.329 Supplemental oxygen for sustenance: Turbine engine powered...shall equip the airplane with sustaining oxygen and dispensing equipment for use as...

2014-01-01

479

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

Code of Federal Regulations, 2011 CFR

... 2011-01-01 false Supplemental oxygen: Reciprocating engine powered airplanes...Requirements § 121.327 Supplemental oxygen: Reciprocating engine powered airplanes...General. Except where supplemental oxygen is provided in accordance with §...

2011-01-01

480

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

Code of Federal Regulations, 2013 CFR

... 1 2013-01-01 2013-01-01 false Cooling test procedures for turbine engine powered airplanes...AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1045 Cooling test procedures for turbine engine powered...

2013-01-01

481

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

Code of Federal Regulations, 2012 CFR

... 1 2012-01-01 2012-01-01 false Cooling test procedures for turbine engine powered airplanes...AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1045 Cooling test procedures for turbine engine powered...

2012-01-01

482

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

Code of Federal Regulations, 2011 CFR

... 1 2011-01-01 2011-01-01 false Cooling test procedures for turbine engine powered airplanes...AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1045 Cooling test procedures for turbine engine powered...

2011-01-01

483

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

Code of Federal Regulations, 2014 CFR

... 1 2014-01-01 2014-01-01 false Cooling test procedures for turbine engine powered airplanes...AND COMMUTER CATEGORY AIRPLANES Powerplant Cooling § 23.1045 Cooling test procedures for turbine engine powered...

2014-01-01

484

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

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Cooling test procedures for turbine engine powered airplanes. 23.1045 Section 23.1045...Powerplant Cooling § 23.1045 Cooling test procedures for turbine engine powered airplanes. (a) Compliance...

2010-01-01

485

A Historical and Engineering View of Power Transmission Systems in Kansai Electric Power Co., Inc.  

NASA Astrophysics Data System (ADS)

During our work in operations related to power transmission technology, we have encountered various natural calamities and man-made disasters. Over the years, we learned many valuable lessons from these bitter experiences, and we now have more reliable, cost-effective and flexible electric power systems. This paper describes the new technologies we have introduced in the facilities making up the power systems and how we operate these systems and facilities. It also takes up the Southern Hyogo Earthquake and loss of Ohi nuclear power generation due to galloping phenomena as typical examples showing how a set of measures as mentioned above substantially improved the reliability of the electric power systems to such an extent that the Japanese electric power systems have attained the world's highest level of reliability. These facts prove that steady and continuous efforts are a prerequisite to success for all power engineers.

Ito, Shunichi; Akiyama, Tetsuo

486

Advanced 35 W Free-Piston Stirling Engine for Space Power Applications  

NASA Astrophysics Data System (ADS)

This paper presents the projected performance and overall design characteristics of a high efficiency, low mass 35 W free-piston Stirling engine design. Overall (engine plus linear alternator) thermodynamic performance greater than 50% of Carnot, with a specific power close to 100 W/kg appears to be a reasonable goal at this small power level. Supporting test data and analysis results from exiting engines are presented. Design implications of high specific power in relatively low power engines is presented and discussed.

Wood, J. Gary; Lane, Neill

2003-01-01

487

Design of a Micro Reciprocating Engine for Power Generation  

NASA Astrophysics Data System (ADS)

A reciprocating engine was designed for a micro power generator. It is expected to be used for a portable micro power generator with high energy density. The proposed reciprocating engine has the spring system, which is composed of opposite-pistons supported by an elastic spring. Combination of resonance of the spring system by the combustion pressure and an induction coil generates electricity due to generated voltage. Working cycle analysis, structural analysis, vibration analysis, and generated voltage calculations were carried out. Adopting H2 gas as a fuel and Si as a structural material, the theoretical output was found to be 41 mW under the conditions that compression ratio is 5, the maximum combustion temperature is 850 K and resonance frequency of the spring system is 582 Hz.

Sugiyama, Susumu; Toriyama, Toshiyuki

488

Efficiency at maximum power of a chemical engine.  

PubMed

A cyclically operating chemical engine is considered that converts chemical energy into mechanical work. The working fluid is a gas of finite-sized spherical particles interacting through elastic hard collisions. For a generic transport law for particle uptake and release, the efficiency at maximum power ?(mp) [corrected] takes the form 1/2+c??+O(??(2)), with 1?2 a universal constant and ?? the chemical potential difference between the particle reservoirs. The linear coefficient c is zero for engines featuring a so-called left/right symmetry or particle fluxes that are antisymmetric in the applied chemical potential difference. Remarkably, the leading constant in ?(mp) [corrected] is non-universal with respect to an exceptional modification of the transport law. For a nonlinear transport model, we obtain ?(mp) = 1/(? + 1) [corrected], with ? > 0 the power of ?? in the transport equation. PMID:24116556

Hooyberghs, Hans; Cleuren, Bart; Salazar, Alberto; Indekeu, Joseph O; Van den Broeck, Christian

2013-10-01

489

Efficiency at maximum power of a chemical engine  

NASA Astrophysics Data System (ADS)

A cyclically operating chemical engine is considered that converts chemical energy into mechanical work. The working fluid is a gas of finite-sized spherical particles interacting through elastic hard collisions. For a generic transport law for particle uptake and release, the efficiency at maximum power ?mp takes the form 1/2+c ? ? + O(? ? ^2), with 1/2 a universal constant and ?? the chemical potential difference between the particle reservoirs. The linear coefficient c is zero for engines featuring a so-called left/right symmetry or particle fluxes that are antisymmetric in the applied chemical potential difference. Remarkably, the leading constant in ?mp is non-universal with respect to an exceptional modification of the transport law. For a nonlinear transport model, we obtain ?mp = 1/(? + 1), with ? > 0 the power of ?? in the transport equation.

Hooyberghs, Hans; Cleuren, Bart; Salazar, Alberto; Indekeu, Joseph O.; Van den Broeck, Christian

2013-10-01

490

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

491

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

Code of Federal Regulations, 2010 CFR

...for emergency descent and for first aid; turbine engine powered airplanes with pressurized...for emergency descent and for first aid; turbine engine powered airplanes with pressurized... (a) General. When operating a turbine engine powered airplane with a...

2010-01-01

492

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

493

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.

494

Electric power engineering bidding evaluation based on C2R model  

Microsoft Academic Search

The paper leads the application of DEA (data envelopment analysis) into the power engineering bidding estimation practices. The scheme of evaluation carrying out multi-IO indices helps weaken the influence of subjective factor in the power engineering bidding evaluation. The paper builds up the power engineering bid evaluation index system, and in this foundation, it evaluates and analyzes the relative efficiency

Yu-wei JII; Shi-yun Zhang; Jian Wang

2010-01-01

495

Faculty Search: Department of Engineering and Public Policy Junior or Senior Hire in  

E-print Network

Faculty Search: Department of Engineering and Public Policy Junior or Senior Hire in the Management, Economics, or Organization of Technology The Department of Engineering and Public Policy (EPP) and Carnegie of Carnegie Mellon University and in the Engineering and Technology Innovation Management (E&TIM) master

Sekhon, Jasjeet S.

496

Design and simulation of a solar-powered\\/fuel-assisted rankine engine for power generation  

Microsoft Academic Search

A solar-powered\\/fuel-assisted steam Rankine engine (SPFASRE) that generates a 36 kW steady electrical power is designed. Steam is generated at 230°C using an unfired boiler. The boiler is connected to oil loops that utilize 400 m2 of single axis tracking concentrating parabolic-trough collectors and an auxiliary gas-fired heater. The steam leaving the boiler is superheated to 400°C in an LPG-fired

H. Gari; A. Khalifa; A. Radhwan

1988-01-01

497

Using Internet Search Engines to Obtain Medical Information: A Comparative Study  

PubMed Central

Background The Internet has become one of the most important means to obtain health and medical information. It is often the first step in checking for basic information about a disease and its treatment. The search results are often useful to general users. Various search engines such as Google, Yahoo!, Bing, and Ask.com can play an important role in obtaining medical information for both medical professionals and lay people. However, the usability and effectiveness of various search engines for medical information have not been comprehensively compared and evaluated. Objective To compare major Internet search engines in their usability of obtaining medical and health information. Methods We applied usability testing as a software engineering technique and a standard industry practice to compare the four major search engines (Google, Yahoo!, Bing, and Ask.com) in obtaining health and medical information. For this purpose, we searched the keyword breast cancer in Google, Yahoo!, Bing, and Ask.com and saved the results of the top 200 links from each search engine. We combined nonredundant links from the four search engines and gave them to volunteer users in an alphabetical order. The volunteer users evaluated the websites and scored each website from 0 to 10 (lowest to highest) based on the usefulness of the content relevant to breast cancer. A medical expert identified six well-known websites related to breast cancer in advance as standards. We also used five keywords associated with breast cancer defined in the latest release of Systematized Nomenclature of Medicine-Clinical Terms (SNOMED CT) and analyzed their occurrence in the websites. Results Each search engine provided rich information related to breast cancer in the search results. All six standard websites were among the top 30 in search results of all four search engines. Google had the best search validity (in terms of whether a website could be opened), followed by Bing, Ask.com, and Yahoo!. The search results highly overlapped between the search engines, and the overlap between any two search engines was about half or more. On the other hand, each search engine emphasized various types of content differently. In terms of user satisfaction analysis, volunteer users scored Bing the highest for its usefulness, followed by Yahoo!, Google, and Ask.com. Conclusions Google, Yahoo!, Bing, and Ask.com are by and large effective search engines for helping lay users get health and medical information. Nevertheless, the current ranking methods have some pitfalls and there is room for improvement to help users get more accurate and useful information. We suggest that search engine users explore multiple search engines to search different types of health information and medical knowledge for their own needs and get a professional consultation if necessary. PMID:22672889

Wang, Liupu; Wang, Juexin; Wang, Michael; Li, Yong; Liang, Yanchun

2012-01-01

498

Cumulative Query Method for Influenza Surveillance Using Search Engine Data  

PubMed Central

Background Internet search queries have become an important data source in syndromic surveillance system. However, there is currently no syndromic surveillance system using Internet search query data in South Korea. Objectives The objective of this study was to examine correlations between our cumulative query method and national influenza surveillance data. Methods Our study was based on the local search engine, Daum (approximately 25% market share), and influenza-like illness (ILI) data from the Korea Centers for Disease Control and Prevention. A quota sampling survey was conducted with 200 participants to obtain popular queries. We divided the study period into two sets: Set 1 (the 2009/10 epidemiological year for development set 1 and 2010/11 for validation set 1) and Set 2 (2010/11 for development Set 2 and 2011/12 for validation Set 2). Pearson’s correlation coefficients were calculated between the Daum data and the ILI data for the development set. We selected the combined queries for which the correlation coefficients were .7 or higher and listed them in descending order. Then, we created a cumulative query method n representing the number of cumulative combined queries in descending order of the correlation coefficient. Results In validation set 1, 13 cumulative query methods were applied, and 8 had higher correlation coefficients (min=.916, max=.943) than that of the highest single combined query. Further, 11 of 13 cumulative query methods had an r value of ?.7, but 4 of 13 combined queries had an r value of ?.7. In validation set 2, 8 of 15 cumulative query methods showed higher correlation coefficients (min=.975, max=.987) than that of the highest single combined query. All 15 cumulative query methods had an r value of ?.7, but 6 of 15 combined queries had an r value of ?.7. Conclusions Cumulative query method showed relatively higher correlation with national influenza surveillance data than combined queries in the development and validation set. PMID:25517353

Seo, Dong-Woo; Sohn, Chang Hwan; Shin, Soo-Yong; Lee, JaeHo; Yu, Maengsoo; Kim, Won Young; Lim, Kyoung Soo; Lee, Sang-Il

2014-01-01

499

Engineering design aspects of the heat-pipe power system  

SciTech Connect

The Heat-pipe Power System (HPS) is a near-term, low-cost space power system designed at Los Alamos that can provide up to 1,000 kWt for many space nuclear applications. The design of the reactor is simple, modular, and adaptable. The basic design allows for the use of a variety of power conversion systems and reactor materials (including the fuel, clad, and heat pipes). This paper describes a project that was undertaken to develop a database supporting many engineering aspects of the HPS design. The specific tasks discussed in this paper are: the development of an HPS materials database, the creation of finite element models that will allow a wide variety of investigations, and the verification of past calculations.

Capell, B.M.; Houts, M.G.; Poston, D.I.; Berte, M.

1997-10-01

500

Engineering design aspects of the heatpipe power system  

SciTech Connect

The Heatpipe Power System (HPS) is a near-term, low-cost space fission power system designed at Los Alamos National Laboratory that can provide up to 1000 kWt for many space applications. The design of the reactor is simple, modular, and adaptable. The basic design allows for the use of a variety of power conversion systems and reactor materials (including the fuel, clad, and heatpipes). This paper describes a project that was undertaken to develop a database supporting many engineering aspects of the HPS design. The specific tasks discussed in this paper are: the development of an HPS materials database, the creation of finite element models that will allow a wide variety of investigations, and the verification of past calculations.

Capell, Brent; Berte, Marc [University of Michigan, 810 Barton Dr., Ann Arbor, Michigan 48105 (United States); Massachusetts Institute of Technology, 54 Pearl St. 1, Cambridge, Massachusetts 02139 (United States)

1998-01-15