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1

GEOmetadb: powerful alternative search engine for the Gene Expression Omnibus  

PubMed Central

The NCBI Gene Expression Omnibus (GEO) represents the largest public repository of microarray data. However, finding data in GEO can be challenging. We have developed GEOmetadb in an attempt to make querying the GEO metadata both easier and more powerful. All GEO metadata records as well as the relationships between them are parsed and stored in a local MySQL database. A powerful, flexible web search interface with several convenient utilities provides query capabilities not available via NCBI tools. In addition, a Bioconductor package, GEOmetadb that utilizes a SQLite export of the entire GEOmetadb database is also available, rendering the entire GEO database accessible with full power of SQL-based queries from within R. Availability: The web interface and SQLite databases available at http://gbnci.abcc.ncifcrf.gov/geo/. The Bioconductor package is available via the Bioconductor project. The corresponding MATLAB implementation is also available at the same website. Contact: yidong@mail.nih.gov

Zhu, Yuelin; Davis, Sean; Stephens, Robert; Meltzer, Paul S.; Chen, Yidong

2008-01-01

2

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.

3

Web Usage Mining in Search Engines  

Microsoft Academic Search

Search engine logs not only keep navigation information, but also the queries made by their users. In particular, queries to a search engine follow a power-law distribution, which is far from uniform. Queries and related clicks can be used to improve the search engine itself in different aspects: user interface, index performance, and answer ranking. In this chapter we present

Ricardo Baeza-Yates

4

Joining the results of heterogeneous search engines  

Microsoft Academic Search

In recent years, while search engines have become more and more powerful, several specialized search engines have been developed for different domains (e.g. library services, services dedicated to specific business sectors, geographic services, and so on). While such services beat generic search engines in their specific domain, they do not enable cross-references; therefore, they are of little use when queries

Daniele Braga; Alessandro Campi; Stefano Ceri; Alessandro Raffio

2008-01-01

5

Improving Search Engine Reliability  

NASA Astrophysics Data System (ADS)

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

Pruthi, Jyoti; Kumar, Ela

2010-11-01

6

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

7

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

8

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

9

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

10

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

11

Precision Evaluation of Search Engines  

Microsoft Academic Search

In this paper, we present a general approach for statistically evaluating precision of search engines on the Web. Search engines are evaluated in two steps based on a large number of sample queries: (a) computing relevance scores of hits from each search engine, and (b) ranking the search engines based on statistical comparison of the relevance scores. In computing relevance

Yi Shang; Longzhuang Li

2002-01-01

12

Search engines and Web dynamics  

Microsoft Academic Search

In this paper we study several dimensions of web dynamics in the context of large-scale Internet search engines. Both growth and update dynamics clearly represent big challenges for search engines. We show how the problems arise in all components of a reference search engine model. Furthermore, we use the FAST Search Engine architecture as a case study for showing some

Knut Magne Risvik; Rolf Michelsen

2002-01-01

13

Search Engines: Terrorism's Killer App  

Microsoft Academic Search

This article investigates whether a relationship exists between the number of fatalities caused by a terrorist group and the number of websites returned via the Google search engine when a search for the group is conducted. It is hypothesized that search engines’ algorithms facilitate such an association, and search engines’ role as the Web's “gatekeeper.” Much attention has been paid

Victor Asal; Paul Harwood

2008-01-01

14

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

15

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.

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

The Search Engine Industry  

Microsoft Academic Search

\\u000a In this chapter we present the main trends in the search engine industry. Being such industry technology based, its dynamics\\u000a can be assessed by applying theories such as (a) dominant design, (b) complementary assets, (c) product and service architecture\\u000a and (d) disruptive technologies. We dedicate the first section of this chapter to reviewing such literature and explaining\\u000a how to apply

Tommaso Buganza; Emanuele Della Valle

2009-01-01

18

EMERSE: The Electronic Medical Record Search Engine  

PubMed Central

EMERSE (The Electronic Medical Record Search Engine) is an intuitive, powerful search engine for free-text documents in the electronic medical record. It offers multiple options for creating complex search queries yet has an interface that is easy enough to be used by those with minimal computer experience. EMERSE is ideal for retrospective chart reviews and data abstraction and may have potential for clinical care as well.

Hanauer, David A.

2006-01-01

19

Tuning up the search engine  

Microsoft Academic Search

Advances in Internet search engine technology may not help you blast Klingons into outer space, but they should help you find them more quickly on the Web. The whole arena for Internet searching has become rather interesting. Search engines appear poised to make some serious breakthroughs in relevancy ranging and personalization that promise to increase the accuracy and reliability of

J. Williams; R. Starzl

2001-01-01

20

Searching for people on Web search engines  

Microsoft Academic Search

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

Amanda Spink; Bernard J. Jansen

2004-01-01

21

Web Searching on the Vivisimo Search Engine  

Microsoft Academic Search

The application of clustering to Web search engine tech- nology is a novel approach that offers structure to the information deluge often faced by Web searchers. Clus- tering methods have been well studied in research labs; however, real user searching with clustering systems in operational Web environments is not well understood. This article reports on results from a transaction log

Sherry Koshman; Amanda Spink; Bernard J. Jansen

2006-01-01

22

Conceptual Models for Search Engines  

Microsoft Academic Search

Search engines have entered popular culture. They touch people in diverse private and public settings and thus heighten the importance of such important social matters as information privacy and control, censorship, and equitable access. To fully benefit from search engines and to participate in debate about their merits, people necessarily appeal to their understandings for how they function. In this

D. G. Hendry; E. N. Efthimiadis

2008-01-01

23

Web Mining in Search Engines  

Microsoft Academic Search

Given the rate of growth of the Web, scalability of search engines is a key issue, as the amount of hardware and network resources needed is large, and expensive. In addition, search engines are popular tools, so they have heavy constraints on query answer time. So, the efficient use of resources can improve both scalability and answer time. One tool

Ricardo A. Baeza-Yates

2004-01-01

24

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

25

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.

1996-01-01

26

The PHASAR Search Engine  

Microsoft Academic Search

Abstract. This article describes the rationale behind the PHASAR system (Phrase-based Accurate Search And Retrieval), a professional Information Retrieval and Text Mining system under development for the collection of information about metabolites from the biological literature. The system is generic in nature and applicable (given suitable linguistic resources and thesauri) to many other forms of professional search. Instead of keywords,

Cornelis H. A. Koster; Olaf Seibert; Marc Seutter

2006-01-01

27

Ocean engineering power systems  

Microsoft Academic Search

The text presents basic thermodynamic principles and engineering considerations for ocean power systems. A survey chapter introduces a wide range of applications of power systems in the oceans. Thermodynamic principles and engine cycles are extensively reviewed in the next chapter. Then, chapters on energy sources, thermal power plants, and engineering of specific types of ocean systems are presented. Engineering principles

Carmichael

1974-01-01

28

Search engines’ responses to several search feature selections  

Microsoft Academic Search

The authors of this paper investigated the impact of the advanced search features of three common search engines on retrieval result performance: Yahoo, Google, and Live Search. The authors analyzed 240 search queries with different information need emphases to determine retrieval effectiveness differences among regular search, title search, exact phrase search, and PDF file format restriction search. A one-way ANOVA

Jin Zhang; Wei Fei

2010-01-01

29

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

30

Mining templates from search result records of search engines  

Microsoft Academic Search

Metasearch engine, Comparison-shopping and Deep Web crawling applications need to extract search result records enwrapped in result pages returned from search engines in response to user queries. The search result records from a given search engine are usually formatted based on a template. Precisely identifying this template can greatly help extract and annotate the data units within each record correctly.

Hongkun Zhao; Weiyi Meng; Clement T. Yu

2007-01-01

31

The anatomy of a news search engine  

Microsoft Academic Search

Today, news browsing and searching is one of the most important Internet activity. This paper introduces a general framework to build a News search engine by describing Velthune, an academic News search engine available on line.

Antonio Gulli

2005-01-01

32

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

33

A multilingual image search engine.  

PubMed

A multilingual search interface has been created for a large, richly-indexed multi-journal library of medical images. Images are indexed by keywords and medical concepts. Nine non-English languages are supported, including Chinese and Japanese. Queries are translated into Medical Subject Headings (MeSHA(R)) terms through a specialized interface with the U.S. National Library of Medicine. The ARRS GoldMiner(TM) Global search engine presents the query and navigation information in the original language with English-language search results. PMID:18998789

Kahn, Charles E; Thao, Cheng

2008-11-06

34

[Development of domain specific search engines].  

PubMed

As cyber space exploding in a pace that nobody has ever imagined, it becomes very important to search cyber space efficiently and effectively. One solution to this problem is search engines. Already a lot of commercial search engines have been put on the market. However these search engines respond with such cumbersome results that domain specific experts can not tolerate. Using a dedicate hardware and a commercial software called OpenText, we have tried to develop several domain specific search engines. These engines are for our institute's Web contents, drugs, chemical safety, endocrine disruptors, and emergent response for chemical hazard. These engines have been on our Web site for testing. PMID:11534132

Takai, T; Tokunaga, M; Maeda, K; Kaminuma, T

2000-01-01

35

Search Engine Prototype System Based on Cloud Computing  

NASA Astrophysics Data System (ADS)

With the development of Internet, IT support systems need to provide more storage space and faster computing power for Internet applications such as search engine. The emergence of cloud computing can effectively solve these problems. We present a search engine prototype system based on cloud computing platform in this paper.

Han, Jinyu; Hu, Min; Sun, Hongwei

36

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

37

Quantum searching application in search based software engineering  

NASA Astrophysics Data System (ADS)

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

Wu, Nan; Song, FangMin; Li, Xiangdong

2013-05-01

38

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

39

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

40

Search Engines on the World Wide Web.  

ERIC Educational Resources Information Center

|Discusses search engines and provides methods for determining what resources are searched, the quality of the information, and the algorithms used that will improve the use of search engines on the World Wide Web, online public access catalogs, and electronic encyclopedias. Lists strategies for conducting searches and for learning about the…

Walster, Dian

1997-01-01

41

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

NASA Astrophysics Data System (ADS)

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

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

42

CADIAL Search Engine at INEX  

NASA Astrophysics Data System (ADS)

Semi-structured document retrieval is becoming more popular with the increasing quantity of data available in XML format. In this paper, we describe a search engine model that exploits the structure of the document and uses language modelling and smoothing at the document and collection levels for calculating the relevance of each element from all the documents in the collection to a user query. Element priors, CAS query constraint filtering, and the +/- operators are also used in the ranking procedure. We also present the results of our participation in the INEX 2008 Ad Hoc Track.

Miji?, Jure; Moens, Marie-Francine; Dalbelo Baši?, Bojana

43

Enterprise search behaviour of software engineers  

Microsoft Academic Search

Technical professionals spend ~25% of their time at work searching for information, and have specialized information needs that are not well-served by generic enterprise search tools. In this study, we investigated how a group of software engineers use a workplace search system. We identify patterns of search behaviour specific to this group and distinct from general web and intranet search

Luanne Freund; Elaine G. Toms

2006-01-01

44

Children's Search Engines from an Information Search Process Perspective.  

ERIC Educational Resources Information Center

|Describes cognitive and affective characteristics of children and teenagers that may affect their Web searching behavior. Reviews literature on children's searching in online public access catalogs (OPACs) and using digital libraries. Profiles two Web search engines. Discusses some of the difficulties children have searching the Web, in the…

Broch, Elana

2000-01-01

45

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

46

SPELLING CORRECTION IN THE PUBMED SEARCH ENGINE  

PubMed Central

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.

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

2007-01-01

47

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

48

Image Searching on the Excite Web Search Engine.  

ERIC Educational Resources Information Center

|Examines visual information needs as expressed in users' Web image queries on the Excite search engine. Discusses metadata; content-based image retrieval; user interaction with images; terms per query; term frequency; and implications for the development of models for visual information retrieval and for the design of Web search engines.…

Goodrum, Abby; Spink, Amanda

2001-01-01

49

Aggregate suppression for enterprise search engines  

Microsoft Academic Search

Many enterprise websites provide search engines to facilitate customer access to their underlying documents or data. With the web interface of such a search engine, a customer can specify one or a few keywords that he\\/she is interested in; and the search engine returns a list of documents\\/tuples matching the user-specified keywords, sorted by an often-proprietary scoring function. It was

Mingyang Zhang; Nan Zhang; Gautam Das

2012-01-01

50

A dynamic knowledge base based search engine  

Microsoft Academic Search

Search engines have greatly helped us to find the desired information from the Internet. Most search engines use keywords\\u000a matching technique. This paper discusses a Dynamic Knowledge Base based Search Engine (DKBSE), which can expand the user’s\\u000a query using the keywords’ concept or meaning. To do this, the DKBSE needs to construct and maintain the knowledge base dynamically\\u000a via the

Wang Hui-jin; Hu Hua; Li Qing

2005-01-01

51

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

52

ReSEARCH: A Requirements Search Engine.  

National Technical Information Service (NTIS)

This research address three closely related problems. (1) Most current search technology is based on a popularity metric (e.g., PageRank or ExpertRank), but not on the semantic content of the document. (2) When building components in a service-oriented ar...

C. Martell G. Gehrke P. Anand P. H. Adams R. Gera

2008-01-01

53

A Method for Search Engine Selection using Thesaurus for Selective Meta-Search Engine  

NASA Astrophysics Data System (ADS)

In this paper, we propose a new method for selecting search engines on WWW for selective meta-search engine. In selective meta-search engine, a method is needed that would enable selecting appropriate search engines for users' queries. Most existing methods use statistical data such as document frequency. These methods may select inappropriate search engines if a query contains polysemous words. In this paper, we describe an search engine selection method based on thesaurus. In our method, a thesaurus is constructed from documents in a search engine and is used as a source description of the search engine. The form of a particular thesaurus depends on the documents used for its construction. Our method enables search engine selection by considering relationship between terms and overcomes the problems caused by polysemous words. Further, our method does not have a centralized broker maintaining data, such as document frequency for all search engines. As a result, it is easy to add a new search engine, and meta-search engines become more scalable with our method compared to other existing methods.

Goto, Shoji; Ozono, Tadachika; Shintani, Toramatsu

54

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

55

Overlap among major web search engines  

Microsoft Academic Search

Purpose – This paper reports the findings of a major study examining the overlap among results retrieved by three major web search engines. The goal of the research was to: measure the overlap across three major web search engines on the first results page overlap (i.e. share the same results) and the differences across a wide range of user defined

Amanda Spink; Bernard J. Jansen; Vinish Kathuria; Sherry Koshman

2006-01-01

56

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

57

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

58

Plural engine power producing system  

SciTech Connect

A system is described for producing power utilizing gas turbine engines comprising: a primary engine including a gas generator and a power turbine; a secondary engine including: a compressor; a combustor; and a turbine driving engaged with the compressor; drive means selectively coupling the gas generator of the primary engine and the secondary engine for augmenting the output power of the primary engine and for achieving improved fuel consumption of the system at low power levels.

Banthin, C.; Deman, J.

1993-08-31

59

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

60

Algorithmic Basics of Search Engine Development  

NASA Astrophysics Data System (ADS)

The basics of search engines development are reviewed in this report. A structure of search engine as a part of an electronic library is offered. Methods of smart search of relevant information based on multi-agent systems and document processing methods are reviewed in the report. Analysis of major problems of processing, indexing and relevance evaluation is carried out. Statistical indexing, algebraic relevance evaluation and linguistic automaton construction for effective document processing and understanding are considered.

Tregubov, A. A.; Kononova, T. S.

61

Music search engines: Specifications and challenges  

Microsoft Academic Search

Nowadays we have a proliferation of music data available over the Web. One of the imperative challenges is how to search these vast, global-scale musical resources to find preferred music. Recent research has envisaged the notion of music search engines (MSEs) that allow for searching preferred music over the Web. In this paper, we examine the growing research topic of

Alexandros Nanopoulos; Dimitrios Rafailidis; Maria M. Ruxanda; Yannis Manolopoulos

2009-01-01

62

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

63

Distributed Information Search with Adaptive Meta-Search Engines  

Microsoft Academic Search

With the flourishing development of E-Commerce and the exponential growth of information produced by businesses, organizations\\u000a and individuals on the Internet, it becomes more and more difficult for a person to find information efficiently by only using\\u000a one or a few search engine(s), due to the great diversity among heterogeneous sources. This paper proposes a method for building\\u000a adaptive meta-search

Lieming Huang; Ulrich Thiel; Matthias Hemmje; Erich J. Neuhold

2001-01-01

64

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

Microsoft Academic Search

A metasearch engine supports unified access to multiple component search engines. To build a very large-scale metasearch engine that can access up to hundreds of thousands of component search engines, one major challenge is to incorporate large numbers of autonomous search engines in a highly effective manner. To solve this problem, we propose automatic search engine discovery, automatic search engine

Zonghuan Wu; Vijay Raghavan; Hua Qian; Vuyyuru Rama; Weiyi Meng; Hai He; Clement T. Yu

2003-01-01

65

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.

66

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

67

Search engine for handwritten documents  

NASA Astrophysics Data System (ADS)

Search aspects of a system for analyzing handwritten documents are described. Documents are indexed using global image features, e.g., stroke width, slant as well as local features that describe the shapes of words and characters. Image indexing is done automatically using page analysis, page segmentation, line separation, word segmentation and recognition of words and characters. Two types of search are permitted: search based on global features of entire document and search using features at local level. For the second type of search, i.e., local, all the words in the document are characterized and indexed by various features and it forms the basis of different search techniques. The paper focuses on local search and describes four tasks: word/phrase spotting, text to image, image to text and plain text. Performance in terms of precision/recall and word ranking is reported on a database of handwriting samples from about 1,000 individuals.

Srihari, Sargur N.; Huang, Chen; Srinivasan, Harish

2004-12-01

68

PARADISE Based Search Engine at TREC 2009 Web Track.  

National Technical Information Service (NTIS)

In this paper, we introduce the PARADISE search engine in TREC09 Web track. PARADISE is the abbreviation for Platform for Applying, Research and Developing Intelligent Search Engine, which is a search engine platform developed by SEWM group, Peking Univer...

D. Shan D. Zhao H. Yan J. He

2009-01-01

69

Overlap Among Major Web Search Engines  

Microsoft Academic Search

Our paper examined the overlap among results retrieved by three major Web search engines for a large set of more than 10,316 queries. Previous smaller studies have discussed the lack of overlap in results returned by Web search engines for the same queries. Our large-scale study measured the overlap of first page results (both non-sponsored and sponsored) across three major

Amanda Spink; Bernard J. Jansen; Chris Blakely; Sherry Koshman

2006-01-01

70

An Approximate Search Engine for Structural Databases  

Microsoft Academic Search

When a person interested in a topic enters a keyword into a Web search engine, the response is nearly in-stantaneous (and sometimes overwhelming). The im-pressive speed is due to clever inverted index struc-tures, caching, and a domain-independent knowledge of strings. Our project seeks to construct algorithms, data structures, and software that approach the speed of keyword-based search engines for queries

Jason Tsong-Li Wang; Xiong Wang; Dennis Shasha; Bruce A. Shapiro; Kaizhong Zhang; Xinhuan Zheng; Qicheng Ma; Zasha Weinberg

2000-01-01

71

Clinician Search Behaviors May Be Influenced by Search Engine Design  

PubMed Central

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

Coiera, Enrico; Zrimec, Tatjana; Compton, Paul

2010-01-01

72

Semantic annotation in academic search engine  

Microsoft Academic Search

Web information can be given more explicit meanings through semantic annotation, so that computer can understand and deal with the information automatically, which is important to improve recall ratio and precision ratio of search engine. An ontology-based semantic annotation method is represented in this paper, and which has been applied in an academic search. Construction of academic ontology, semantic annotation

Sun Jian; Xu Jungang; Cen Zhiwang

2010-01-01

73

DEADLINER: building a new niche search engine  

Microsoft Academic Search

We present DEADLINER, a search engine that catalogs confer- ence and workshop announcements, and ultimately will monitor and extract a wide range of academic convocation material from the web. The system currently extracts speakers, locations, da tes, pa- per submission (and other) deadlines, topics, program committees, abstracts, and affiliations. A user or user agent can perform de- tailed searches on

Andries Kruger; C. Lee Giles; Frans Coetzee; Eric J. Glover; Gary William Flake; Steve Lawrence; Christian W. Omlin

2000-01-01

74

A Novel Metadata Based Meta-Search Engine  

Microsoft Academic Search

We present a novel meta-search engine called DYNIQX for metadata based cross search in order to study the effect of metadata in collection fusion. DYNIQX exploits the availability of metadata in academic search services such as PubMed and Google Scholar etc for fusing search results from heterogeneous search engines. Furthermore, metadata from these search engines are used for generating dynamic

Jianhan Zhu; Dawei Song; Marc Eisenstadt; Cristi Barladeanu

2008-01-01

75

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

76

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

77

BiotechFind Search Engine  

NSDL National Science Digital Library

BiotechFind.com is a searchable database of information on severalaspects of the biotechnology field. The database is designed for abroad audience and includes information on biotech companies,university programs, lab products, job openings, and much more. Userscan browse through the various topics, or search for a certain termor geographic area. The Web site also features the latest in biotechnews.

78

SpidersRUs: Creating specialized search engines in multiple languages  

Microsoft Academic Search

While small-scale search engines in specific domains and languages are increasingly used by Web users, most existing search engine development tools do not support the development of search engines in languages other than English, cannot be integrated with other applications, or rely on proprietary software. A tool that supports search engine creation in multiple languages is thus highly desired. To

Michael Chau; Jialun Qin; Yilu Zhou; Chunju Tseng; Hsinchun Chen

2008-01-01

79

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

80

Space Power Engineering Problems  

NASA Astrophysics Data System (ADS)

Development of space power engineering in the first half of XXI century shall be aimed at preventing the forthcoming energy crisis and ecological catastrophes. The problem can be solved through using solar energy being perpetual, endless, and ecologically safe. As of now, issues on the development and employment of solar power stations and its beaming to the ground stations in the SHF band are put on the agenda. The most pressing problem is to develop orbital solar reflectors to illuminate towns in the polar regions, agricultural regions, and areas of processing sea products. Space-based technologies can be used to deal with typhoons, green house effects, and "ozone holes". Recently, large, frameless film structures formed by centrifugal forces offer the promise of structures for orbital power plants, reflectors, and solar sails. A big success is achieved in the development of power generating solar array elements of amorphous silicon. These innovations would make the development of orbital solar power plants dozens of times cheaper. Such solar arrays shall be used in the nearest future on heavy communication satellites and the Earth remote sensing platforms for generation of 140-160 kW at a specific power beyond 300 W/kg. The cargo traffic needed to develop and maintain the orbital power plants and reflector systems could be equipped with solar sails as the future low thrust propulsion. In 2000, the mankind witnessed an unexpected beginning of energy crisis along with strong hydro- meteorological events (typhoons, floods) that shocked the USA, the Western Europe, England, Japan, and other countries. The total damage is estimated as 90 billions of dollars. The mankind is approaching a boundary beyond which its further existence would depend on how people would learn to control weather and use ecologically safe power sources. Space technology base on the research potential accumulated in the previous century could serve for the solution of this problem.

Senkevich, V. P.

2002-01-01

81

Automatically Detecting Boolean Operations Supported by Search Engines, Towards Search Engine Query Language Discovery  

Microsoft Academic Search

Each Web search engine provides query language through which it can communicate with its users and retrieve corresponding results to user queries. Supporting Boolean operations is a major characteristic of the query language. In this paper, we propose a novel, fully automatic, query probing based approach to identify what Boolean operations that are supported by a search engines and their

Zonghuan Wu; Dheerendranath Mundluru; Vijay V. Raghavan

2004-01-01

82

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.

83

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

84

Weighting Relations Using Web Search Engine  

NASA Astrophysics Data System (ADS)

Measuring the weight of the relation between a pair of entities is necessary to use social networks for various purposes. Intuitively, a pair of entities has a stronger relation than another. It should therefore be weighted higher. We propose a method, using a Web search engine, to compute the weight of the relation existing between a pair of entities. Our method receives a pair of entities and various relations that exist between entities as input. It then outputs the weighted value for the pair of entities. The method explores how search engine results can be used as evidence for how strongly the two entities pertain to the relation.

Oka, Mizuki; Matsuo, Yutaka

85

Development of a Self-Adaptive Web Search Engine  

Microsoft Academic Search

As the Web evolves towards the direction of providing more and more information, locating the desired information efficiently becomes a very important issue. Web search engines are very useful information search tools in the Internet. Current Web search engines produce search results relating to the search terms and the actual information collected by them. Since the selections of the search

Weifeng Zhang; Baowen Xu; Hongji Yang

2001-01-01

86

Evidence-based Medicine Search: a customizable federated search engine  

PubMed Central

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

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

2008-01-01

87

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

Microsoft Academic Search

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

M. Koorangi; K. Zamanifar

2005-01-01

88

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

89

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

90

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

91

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

92

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

93

Mining search engine query logs for query recommendation  

Microsoft Academic Search

This paper presents a simple and intuitive method for min- ing search engine query logs to get fast query recommenda- tions on a large scale industrial-strength search engine. In order to get a more comprehensive solution, we combine two methods together. On the one hand, we study and model search engine users' sequential search behavior, and inter- pret this consecutive

Zhiyong Zhang; Olfa Nasraoui

2006-01-01

94

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

95

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

96

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

97

Ontology driven image search engine  

NASA Astrophysics Data System (ADS)

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

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

2007-01-01

98

A Rough Set Based Self-Adaptive Web Search Engine  

Microsoft Academic Search

Web search engines are very useful information service tools in the Internet. The current Web search engines produce search results relating to the search terms and the actual information collected by them. Since the selections of the search results cannot affect the future ones, they may not cover most people's interests. In the paper, feedback information produced by the users'

Baowen Xu; Weifeng Zhang; William C. Chu

2001-01-01

99

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

100

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

101

(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

102

Optimal Crawling Strategies for Multimedia Search Engines  

Microsoft Academic Search

In this paper we propose a novel optimal crawling strategy for next-generation multimedia search engines. We consider here a Web crawl as a two-dimensional (2D) random walker on a graph whose vertices are the Web pages and whose edges are the hyperlinks. The proposed crawler is a two-part scheme optimizing the crawling process in such a way that the average

Hiromitsu Hama; Thi Thi Zin; Pyke Tin

2009-01-01

103

Employing log metrics to evaluate search behaviour and success: case study BBC search engine  

Microsoft Academic Search

This paper argues that metrics can be generated from search transactional web logs that can help evaluate search engine effectiveness. Search logs from the BBC website were analysed and metrics extracted. Two search metrics - the time lapse between searches and the number of searches in a session - were developed to see whether they could measure search success or

Paul Huntington; David Nicholas

2007-01-01

104

Exploring HTML Tags and Metadata to Improve the Expressiveness of Web Search Engine's Queries  

Microsoft Academic Search

Web search engines are powerful tools used to satisfy specific information needs on the Web. Their purpose is to maximize user satisfaction when performing this task. Although there are other sources of evidence, besides text, to characterize document relevance for a specific need, especially for HTML documents, current search engines do not allow users to explore these features when posing

Nuno Filipe Escudeiro; P. M. Escudeiro

2009-01-01

105

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

106

Automatically Mining Result Records from Search Engine Response Pages  

Microsoft Academic Search

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

Dheerendranath Mundluru; Jayasimha Reddy Katukuri; Saygin Celebi

2005-01-01

107

Building an open source meta-search engine  

Microsoft Academic Search

In this short paper we introduce Helios, a flexible and efficient open source meta-search engine. Helios currently runs on the top of 18 search engines (in Web, Books, News, and Academic publication domains), but additional search engines can be easily plugged in. We also report some performance mesured during its development.

Antonio Gulli; A. Signorini

2005-01-01

108

Viewing Web Search Engines as Corpus Query Systems  

Microsoft Academic Search

In this paper we examine whether a web search engine can function as a corpus management system, by describing the similarities between corpus query systems and web search engines and we present a prototype implementation of a corpus management system incorporated in a Greek web search engine. We target our research towards the examination of common features that exist among

Alexandros Ntoulas; Sofia Stamou; Manolis Tzagarakis; Ioanna Tsakou; Dimitris Christodoulakis

109

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

110

Research on Agriculture Domain Meta-Search Engine System  

NASA Astrophysics Data System (ADS)

The rapid growth of agriculture web information brings a fact that search engine can not return a satisfied result for users' queries. In this paper, we propose an agriculture domain search engine system, called ADSE, that can obtains results by an advance interface to several searches and aggregates them. We also discuss two key technologies: agriculture information determination and engine.

Xie, Nengfu; Wang, Wensheng

111

Research on Agriculture Domain Meta-Search Engine System  

NASA Astrophysics Data System (ADS)

The rapid growth of agriculture web information brings a fact that search engine can not return a satisfied result for users’ queries. In this paper, we propose an agriculture domain search engine system, called ADSE, that can obtains results by an advance interface to several searches and aggregates them. We also discuss two key technologies: agriculture information determination and engine.

Xie, Nengfu; Wang, Wensheng

112

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

113

iMed: An Intelligent Medical Web Search Engine  

Microsoft Academic Search

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

Gang Luo

114

Use of an Academic Library Web Site Search Engine  

Microsoft Academic Search

An academic library Web site's search engine logs were analyzed to discover how patrons used the site search. Results from this study were intended to improve the site search engine and the library's Web page organization and features. The findings showed that patrons did not understand the function of the search and tried to use it to find information of

Jody Condit Fagan

2002-01-01

115

The Research of Vertical Search Engine for Agriculture  

NASA Astrophysics Data System (ADS)

Following rapid expansion of huge Agriculture information body on the Web, the efficient Agriculture information gathering on specified top becomes more and more important in search engine research. Through the statement of the developing trend of search engine and sharing agriculture information resource, this paper discusses the necessity of building search engine for agriculture information. The author clarifies the working principles of professional search engine for agriculture and finally analyses the improvement of searching technique of agriculture and proposes a model for agriculture - focused search.

Li, Weiying; Zhao, Yan; Liu, Bo; Li, Qiang

116

Search Engine Processor: filtering and organizing PSMs  

PubMed Central

The Search Engine Processor (SEPro) is a tool for filtering, organizing, sharing, and displaying peptide spectrum matches. It employs a novel three-tier Bayesian approach that uses layers of spectrum, peptide, and protein logic to lead the data to converge to a single list of reliable protein identifications. SEPro is integrated into the PatternLab for proteomics environment, where an arsenal of tools for analyzing shotgun proteomic data is provided. By using the semi-labeled decoy approach for benchmarking, we show that SEPro significantly outperforms a commercially available competitor.

Carvalho, Paulo C.; Fischer, Juliana S. G.; Xu, Tao; Cociorva, Daniel; Balbuena, Tiago S.; Valente, Richard H.; Perales, Jonas; Yates, John R.; Barbosa, Valmir C.

2012-01-01

117

Cryogenic engineering and fusion power  

Microsoft Academic Search

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

C. E. Taylor

1974-01-01

118

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

119

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

120

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

121

Manipulating search engine algorithms: the case of Google  

Microsoft Academic Search

Purpose – To investigate how search engine users manipulate the rankings of search results. Search engines employ different ranking methods in order to display the “best” results first. One of the ranking methods is PageRank, where the number of links pointing to the page influences its rank. The “anchor text,” the clickable text of the hypertext link is another “ingredient”

Judit Bar-Ilan

2007-01-01

122

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

123

Comprehension effects of signalling relationships between documents in search engines  

Microsoft Academic Search

A key task for students learning about a complex topic from multiple documents on the web is to establish the existing rhetorical relations between the documents. Traditional search engines such as Google® display the search results in a listed format, without signalling any relationship between the documents retrieved. New search engines such as Kartoo® go a step further, displaying the

Ladislao Salmerón; Laura Gil; Ivar Bråten; Helge I. Strømsø

2010-01-01

124

Transliteration based Search Engine for Multilingual Information Access  

Microsoft Academic Search

Most of the Internet data for Indian languages exist in various encodings, causing difcul- ties in searching for the information through search engines. In the Indian scenario, ma- jority web pages are not searchable or the in- tended information is not efciently retrieved by the search engines due to the following: (1) Multiple text-encodings are used while authoring websites. (2)

Anand Arokia Raj; Harikrishna Maganti

2009-01-01

125

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

PubMed Central

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

Wu, G; Li, J

1999-01-01

126

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

127

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

128

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

129

Utilization of a radiology-centric search engine.  

PubMed

Internet-based search engines have become a significant component of medical practice. Physicians increasingly rely on information available from search engines as a means to improve patient care, provide better education, and enhance research. Specialized search engines have emerged to more efficiently meet the needs of physicians. Details about the ways in which radiologists utilize search engines have not been documented. The authors categorized every 25th search query in a radiology-centric vertical search engine by radiologic subspecialty, imaging modality, geographic location of access, time of day, use of abbreviations, misspellings, and search language. Musculoskeletal and neurologic imagings were the most frequently searched subspecialties. The least frequently searched were breast imaging, pediatric imaging, and nuclear medicine. Magnetic resonance imaging and computed tomography were the most frequently searched modalities. A majority of searches were initiated in North America, but all continents were represented. Searches occurred 24 h/day in converted local times, with a majority occurring during the normal business day. Misspellings and abbreviations were common. Almost all searches were performed in English. Search engine utilization trends are likely to mirror trends in diagnostic imaging in the region from which searches originate. Internet searching appears to function as a real-time clinical decision-making tool, a research tool, and an educational resource. A more thorough understanding of search utilization patterns can be obtained by analyzing phrases as actually entered as well as the geographic location and time of origination. This knowledge may contribute to the development of more efficient and personalized search engines. PMID:19214633

Sharpe, Richard E; Sharpe, Megan; Siegel, Eliot; Siddiqui, Khan

2009-02-12

130

Cancer Internet Search Activity on a Major Search Engine, United States 2001-2003  

PubMed Central

Background To locate online health information, Internet users typically use a search engine, such as Yahoo! or Google. We studied Yahoo! search activity related to the 23 most common cancers in the United States. Objective The objective was to test three potential correlates of Yahoo! cancer search activity—estimated cancer incidence, estimated cancer mortality, and the volume of cancer news coverage—and to study the periodicity of and peaks in Yahoo! cancer search activity. Methods Yahoo! cancer search activity was obtained from a proprietary database called the Yahoo! Buzz Index. The American Cancer Society's estimates of cancer incidence and mortality were used. News reports associated with specific cancer types were identified using the LexisNexis “US News” database, which includes more than 400 national and regional newspapers and a variety of newswire services. Results The Yahoo! search activity associated with specific cancers correlated with their estimated incidence (Spearman rank correlation, ? = 0.50, P = .015), estimated mortality (? = 0.66, P = .001), and volume of related news coverage (? = 0.88, P < .001). Yahoo! cancer search activity tended to be higher on weekdays and during national cancer awareness months but lower during summer months; cancer news coverage also tended to follow these trends. Sharp increases in Yahoo! search activity scores from one day to the next appeared to be associated with increases in relevant news coverage. Conclusions Media coverage appears to play a powerful role in prompting online searches for cancer information. Internet search activity offers an innovative tool for passive surveillance of health information–seeking behavior.

Cooper, Crystale Purvis; Mallon, Kenneth P; Leadbetter, Steven; Peipins, Lucy A

2005-01-01

131

Search engine for phonebook-based smart phone networks  

Microsoft Academic Search

Search engines generally lack the trust and personalization dimension. The outcomes of the search are not socially relevant: they often reflect only the content popularity based on lookup tables gathered by search robots. In order to obtain personalization and social relevance, in other words, to bring the search outcome closer to a common human perception of value and reliability, the

B. Bakos; L. Farkas; J. K. Nurminen

2005-01-01

132

Study of a Quantum Framework for Search Based Software Engineering  

NASA Astrophysics Data System (ADS)

The Search Based Software Engineering (SBSE) is widely used in the software engineering to identify optimal solutions. The traditional methods and algorithms used in SBSE are criticized due to their high costs. In this paper, we propose a rapid modified-Grover quantum searching method for SBSE, and theoretically this method can be applied to any search-space structure and any type of searching problems.

Wu, Nan; Song, Fangmin; Li, Xiangdong

2013-06-01

133

Chinas Search for Military Power  

Microsoft Academic Search

How much military power does China ultimately desire? A close look at Chinese texts on military doctrine over the last decade reveals that Beijing’s objectives for the use of military power are more certain than many policy analysts maintain.

M. Taylor Fravel

2008-01-01

134

The anatomy of a large-scale social search engine  

Microsoft Academic Search

We present Aardvark, a social search engine. With Aardvark, users ask a question, either by instant message, email, web input, text message, or voice. Aardvark then routes the question to the person in the user's extended social network most likely to be able to answer that question. As compared to a traditional web search engine, where the challenge lies in

Damon Horowitz; Sepandar D. Kamvar

2010-01-01

135

A Scalable Topic-Based Open Source Search Engine  

Microsoft Academic Search

Site-based or topic-specic search engines work with mixed success because of the general difculty of the inform- ation retrieval task, and the lack of good link information to allow authorities to be identied. We are advocating an open source approach to the problem due to its scope and need for software components. We have adopted a topic- based search engine

Wray L. Buntine; Jaakko Löfström; Jukka Perkiö; Sami Perttu; Vladimir Poroshin; Tomi Silander; Henry Tirri; Antti J. Tuominen; Ville H. Tuulos

2004-01-01

136

An Efficient Clustering Search Engine Using Directory Tree  

Microsoft Academic Search

In this paper, we present a Clustering Search Engine System, called CSES. This system is fundamentally different from traditional search engines, such as GYM (Google, Yahoo!, and MSN), in that GYM presents to the user non- classified web pages whereas CSES provides to the user taxonomic web pages that would greatly help reduce the time required by the user to

Chun-Wei Tsai; Heng-Yao Hsu; Chu-Sing Yang; Ming-Chao Chiang

137

Enhance your search engine functionality with peer to peer systems  

Microsoft Academic Search

According to human needs your search engine should increase the quality of the results with new functions. Many of new functions use from few or volatile and distributed data. We think that current search engines work very well and we shouldn't import huge and volatile data into them (for enhancing them). Peer to peer systems showed that they can work

Alimohammad Saghiri; Alireza Bagheri

2010-01-01

138

Complementing search engines with online web mining agents  

Microsoft Academic Search

While search engines have become the major decision support tools for the Internet, there is a growing disparity between the image of the World Wide Web stored in search engine repositories and the actual dynamic, distributed nature of Web data. We propose to attack this problem using an adaptive population of intelligent agents mining the Web online at query time.

Filippo Menczer

2003-01-01

139

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

140

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

141

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

142

ADMIRE: an adaptive data model for meta search engines  

Microsoft Academic Search

Considering the diversity among search engines, efficient integration of them is an important but difficult job. It is essential to provide a data model that can provide a detailed description of the query capabilities of heterogeneous search engines. By means of this model, the meta-searcher can map users' queries into specific sources more accurately, and it can achieve good precision

Lieming Huang; Matthias Hemmje; Erich J. Neuhold

2000-01-01

143

A COLLABORATIVE, SEMANTIC AND CONTEXT AWARE SEARCH ENGINE Position Paper  

Microsoft Academic Search

Search engines help people to find information in the largest public knowledge system of the world: the Web. Unfortunately its size makes very complex to discover the right information. The users are faced lots of useless results forcing them to select one by one the most suitable. The new generation of search engines evolve from keyword-based indexing and classification to

Manuela Angioni; Roberto Demontis; Massimo Deriu; Emanuela De Vita; Cristian Lai; Ivan Marcialis; Gavino Paddeu; Antonio Pintus; Andrea Piras; Raffaella Sanna; Alessandro Soro; Franco Tuveri

144

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

145

Combining Website Search Engine Optimization with Advanced Web Log Analysis  

Microsoft Academic Search

This paper provides a clear guideline to the development of an online decision-making tool. The importance of ranking for an organizations virtual presence through search engines is also discussed. The system described illustrates the complexity of the competition between organizations to be highly ranked by leading search engines. The system not only reports the rankings of the owners but compares

Seamus Dromey; Ciara Heavin; Karen Neville

2005-01-01

146

A new method for automatic performance comparison of search engines  

Microsoft Academic Search

In this paper, we present a new method for automatically comparing the performance, such as precision, of search engines. Based on queries randomly selected from a specific domain of interest, the method uses robots to automatically query the target search engines, evaluates the relevance of the returned links to the query either automatically based on the vector space model or

Longzhuang Li; Yi Shang

2000-01-01

147

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…

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

2012-01-01

148

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.

2012-01-01

149

Research on Personalized Information Filtering of Search Engine  

NASA Astrophysics Data System (ADS)

Since network has been created and developing rapidly in recent years, the age of information exploding is coming. The Search Engine becomes more and more important for people, but the traditional search engine retrieves and provides information just according to the keywords that users input. How to recommend the right information to users has become the hot point. The technology of personalized information filtering brings people hope .The paper I present analyzed the achievements of those filtering technologies ,and adopted user-system complex-operating modeling to build User-activitycollecting module, User-interest-updating module and User-searching module, in order to meet theme-oriented searching’s needs. Experiments showed that the user-interest model can provide personalized service and enhance search engine’s precision.

Zhang, Shu; Chen, Xinrong; Luo, Changshou

150

Using Search in Knowledge-Based Engineering  

Microsoft Academic Search

Search has been instrumental in many well known successes of AI problem solving. These successes are currently mostly restricted to well structured domains like games or scheduling. The resulting search spaces can be searched using special purpose search heuristics and strategies. In this position paper we formulate the problems and challenges encountered when these successes are to be extended to

Andreas Junghanns; Rüdiger Klein

151

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

152

Intelligent Output Interface for Intelligent Medical Search Engine  

Microsoft Academic Search

To facilitate ordinary people to search medical information, we have built an intelligent medical Web search engine called iMed. iMed uses medical knowledge and an interactive questionnaire to find multiple diseases serving as queries. The search results of these queries are combined together and returned to the searcher in a traditional sequential order. Nevertheless, searchers still frequently miss desired information,

Gang Luo

2008-01-01

153

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

154

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

155

Harmony Search Algorithms in Structural Engineering  

Microsoft Academic Search

\\u000a Harmony search method is widely applied in structural design optimization since its emergence. These applications have shown\\u000a that harmony search algorithm is robust, effective and reliable optimization method. Within recent years several enhancements\\u000a are suggested to improve the performance of the algorithm. Among these Mahdavi has presented two versions of harmony search\\u000a methods. He named these as improved harmony search

M. P. Saka; I. Aydogdu; O. Hasancebi; Z. W. Geem

156

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

157

Topical interests and the mitigation of search engine bias.  

PubMed

Search engines have become key media for our scientific, economic, and social activities by enabling people to access information on the web despite its size and complexity. On the down side, search engines bias the traffic of users according to their page ranking strategies, and it has been argued that they create a vicious cycle that amplifies the dominance of established and already popular sites. This bias could lead to a dangerous monopoly of information. We show that, contrary to intuition, empirical data do not support this conclusion; popular sites receive far less traffic than predicted. We discuss a model that accurately predicts traffic data patterns by taking into consideration the topical interests of users and their searching behavior in addition to the way search engines rank pages. The heterogeneity of user interests explains the observed mitigation of search engines' popularity bias. PMID:16901979

Fortunato, S; Flammini, A; Menczer, F; Vespignani, A

2006-08-10

158

Topical interests and the mitigation of search engine bias  

PubMed Central

Search engines have become key media for our scientific, economic, and social activities by enabling people to access information on the web despite its size and complexity. On the down side, search engines bias the traffic of users according to their page ranking strategies, and it has been argued that they create a vicious cycle that amplifies the dominance of established and already popular sites. This bias could lead to a dangerous monopoly of information. We show that, contrary to intuition, empirical data do not support this conclusion; popular sites receive far less traffic than predicted. We discuss a model that accurately predicts traffic data patterns by taking into consideration the topical interests of users and their searching behavior in addition to the way search engines rank pages. The heterogeneity of user interests explains the observed mitigation of search engines’ popularity bias.

Fortunato, S.; Flammini, A.; Menczer, F.; Vespignani, A.

2006-01-01

159

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

160

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.

Leroy, Gondy

2009-01-01

161

Persuading consumers to form precise search engine queries.  

PubMed

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

2009-11-14

162

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

2012-03-04

163

ArraySearch: A Web-Based Genomic Search Engine  

PubMed Central

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

Wilson, Tyler J.; Ge, Steven X.

2012-01-01

164

Search Engine for Federal Standard 1037C. NTIA Report Series.  

National Technical Information Service (NTIS)

Federal Standard 1037C, Glossary of Telecommunication Terms, contains more than 5800 entries defining the components of several disciplines in telecommunications technology. Use of this large glossary is enhanced with the search engine designed specifical...

W. J. Ingram E. M. Gray

1999-01-01

165

A nuclear power plant system engineering workstation  

Microsoft Academic Search

System engineers offer an approach for effective technical support for operation and maintenance of nuclear power plants. System engineer groups are being set up by most utilities in the United States. Institute of Nuclear Power operations (INPO) and U.S. Nuclear Regulatory Commission (NRC) have endorsed the concept. The INPO Good Practice and a survey of system engineer programs in the

J. H. Mason; J. W. Crosby

1989-01-01

166

A wireless natural language search engine  

Microsoft Academic Search

Web search using stationary (desktop) computers has become a pervasive activity. The mobile user in need of information, however, faces several problems in his or her quest to satisfy an information need. Mobile devices have small displays, and mobile user interfaces are often less then usable, because they impose the desktop Web search paradigm on the mobile user. We present

Jochen L. Leidner

2005-01-01

167

Research on Personalized Information Filtering of Search Engine  

NASA Astrophysics Data System (ADS)

Since network has been created and developing rapidly in recent years, the age of information exploding is coming. The Search Engine becomes more and more important for people, but the traditional search engine retrieves and provides information just according to the keywords that users input. How to recommend the right information to users has become the hot point. The technology of personalized information filtering brings people hope .The paper I present analyzed the achievements of those filtering technologies ,and adopted user-system complex-operating modeling to build User-activitycollecting module, User-interest-updating module and User-searching module, in order to meet theme-oriented searching's needs. Experiments showed that the user-interest model can provide personalized service and enhance search engine's precision.

Zhang, Shu; Chen, Xinrong; Luo, Changshou

168

A Scalable Topic-Based Open Source Search Engine  

Microsoft Academic Search

Site-based or topic-specific search engines work with mixed success because of the general difficulty of the information retrieval task, and the lack of good link information to allow authorities to be identified. We are advocating an open source approach to the problem due to its scope and need for software components. We have adopted a topic-based search engine because it

Wray Buntine; J. Lofstrom; J. Perkio; S. Perttu; V. Poroshin; T. Silander; H. Tirri; A. Tuominen; V. Tuulos

2004-01-01

169

A Search Engine Accepting On-Line Updates  

Microsoft Academic Search

Abstract. We describe and evaluate the performance of a parallel search engine that is able to cope efficiently with concurrent read\\/write oper- ations. Read operations come in the usual form of queries submitted to the search engine and write ones come in the form of new,documents added to the text collection in an on-line manner, namely the insertions are embedded,into

Mauricio Marín; Carolina Bonacic; Veronica Gil Costa; Carlos Gomez

2007-01-01

170

GTNDSE: the GA Tech nuclear data search engine  

NASA Astrophysics Data System (ADS)

The Georgia Tech Nuclear Data Search Engine (GTNDSE) is a perl script developed to assist in extracting nuclear data from a database of ENSDF-formatted A-chain data files. Operation of the search engine will be demonstrated with results from studies of horizontal systematics across the nuclear mass surface, including B(E2) values for all doubly-even nuclei from the database ( ˜3100 measured values).

Kulp, W. D.; Wood, J. L.

2003-10-01

171

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

Code of Federal Regulations, 2013 CFR

...ENGINES AND EQUIPMENT Emission Standards and Related Requirements ...power point on the nominal power curve for the engine configuration...engines. The nominal power curve of an engine configuration...manufacturers to base the nominal power curve on other mapping...

2013-07-01

172

Two improved harmony search algorithms for solving engineering optimization problems  

Microsoft Academic Search

This paper describes two new harmony search (HS) meta-heuristic algorithms for engineering optimization problems with continuous design variables. The key difference between these algorithms and traditional (HS) method is in the way of adjusting bandwidth (bw). bw is very important factor for the high efficiency of the harmony search algorithms and can be potentially useful in adjusting convergence rate of

Majid Jaberipour; Esmaile Khorram

2010-01-01

173

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

174

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

175

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

176

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

177

Research on Social Network Based on Meta-search Engine  

Microsoft Academic Search

In order to solve the problem that we can only collect data from one single data source at some fixed time after mining the keywords in a rather superficial level, and to take full use of the information returned by search engines to construct the social relationship network based on the semantic link of the searched subject, we do the

Shen Yang; Liu Zi-tao; Luo Cheng; Li Ye

2009-01-01

178

Comparative evaluation of web search engines in health information retrieval  

Microsoft Academic Search

Purpose – The intent of this work is to evaluate several generalist and health-specific search engines for retrieval of health information by consumers: to compare the retrieval effectiveness of these engines for different types of clinical queries, medical specialties and condition severity; and to compare the use of evaluation metrics for binary relevance scales and for graded ones. Design\\/methodology\\/approach –

Carla Teixeira Lopes; Cristina Ribeiro

2011-01-01

179

Review of electric power engineering education worldwide  

Microsoft Academic Search

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

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

1999-01-01

180

SPIDERING AND FILTERING WEB PAGES FOR VERTICAL SEARCH ENGINES  

Microsoft Academic Search

IntroductionThe size of the Web is growing exponentially. The number of indexable pages on the web has exceeded 2 billion (Lyman &Varian, 2000). It is more difficult for search engines to keep an up-to-date and comprehensive search index, resulting in lowprecision and low recall rates. Users often md it difficult to search for useful and high-quality information on the Web.Domain-specific

Michael Chau

2002-01-01

181

Agora: A Search Engine for Software Components.  

National Technical Information Service (NTIS)

Agora is a software prototype being developed by the Commercial Off the Shelf (COTS) Based Systems Initiative at the Software Engineering Institute (SEI). The object of this work is to create an automatically generated and indexed worldwide database of so...

R. C. Seacord S. A. Hissam K. C. Wallnau

1998-01-01

182

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.

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

2009-01-01

183

Knowledge-Based Search Engine for Specific 3D Models  

Microsoft Academic Search

\\u000a A search engine is implemented to support querying specific 3D models – digitized Indian pottery on Internet for scientists.\\u000a The engine is knowledge-based. I.e. not only shape information but also shape feature information (knowledge) of 3D models\\u000a can be retrieved via the engine. Shape information of 3D models is collected from Lasers Scanner and\\/or geometric modeling\\u000a techniques. Feature information is

Dezhi Liu; Anshuman Razdan

2004-01-01

184

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

185

Two improved harmony search algorithms for solving engineering optimization problems  

NASA Astrophysics Data System (ADS)

This paper describes two new harmony search (HS) meta-heuristic algorithms for engineering optimization problems with continuous design variables. The key difference between these algorithms and traditional (HS) method is in the way of adjusting bandwidth (bw). bw is very important factor for the high efficiency of the harmony search algorithms and can be potentially useful in adjusting convergence rate of algorithms to optimal solution. First algorithm, proposed harmony search (PHS), introduces a new definition of bandwidth (bw). Second algorithm, improving proposed harmony search (IPHS) employs to enhance accuracy and convergence rate of PHS algorithm. In IPHS, non-uniform mutation operation is introduced which is combination of Yang bandwidth and PHS bandwidth. Various engineering optimization problems, including mathematical function minimization problems and structural engineering optimization problems, are presented to demonstrate the effectiveness and robustness of these algorithms. In all cases, the solutions obtained using IPHS are in agreement or better than those obtained from other methods.

Jaberipour, Majid; Khorram, Esmaile

2010-11-01

186

Interest in Anesthesia as Reflected by Keyword Searches using Common Search Engines  

PubMed Central

Background Since current general interest in anesthesia is unknown, we analyzed internet keyword searches to gauge general interest in anesthesia in comparison with surgery and pain. Methods The trend of keyword searches from 2004 to 2010 related to anesthesia and anaesthesia was investigated using Google Insights for Search. The trend of number of peer reviewed articles on anesthesia cited on PubMed and Medline from 2004 to 2010 was investigated. The average cost on advertising on anesthesia, surgery and pain was estimated using Google AdWords. Searching results in other common search engines were also analyzed. Correlation between year and relative number of searches was determined with p< 0.05 considered statistically significant. Results Searches for the keyword “anesthesia” or “anaesthesia” diminished since 2004 reflected by Google Insights for Search (p< 0.05). The search for “anesthesia side effects” is trending up over the same time period while the search for “anesthesia and safety” is trending down. The search phrase “before anesthesia” is searched more frequently than “preanesthesia” and the search for “before anesthesia” is trending up. Using “pain” as a keyword is steadily increasing over the years indicated. While different search engines may provide different total number of searching results (available posts), the ratios of searching results between some common keywords related to perioperative care are comparable, indicating similar trend. The peer reviewed manuscripts on “anesthesia” and the proportion of papers on “anesthesia and outcome” are trending up. Estimates for spending of advertising dollars are less for anesthesia-related terms when compared to that for pain or surgery due to relative smaller number of searching traffic. Conclusions General interest in anesthesia (anaesthesia) as measured by internet searches appears to be decreasing. Pain, preanesthesia evaluation, anesthesia and outcome and side effects of anesthesia are the critical areas that anesthesiologists should focus on to address the increasing concerns.

Liu, Renyu; Garcia, Paul S.; Fleisher, Lee A.

2012-01-01

187

An advanced search engine for patent analytics in medicinal chemistry.  

PubMed

Patent collections contain an important amount of medical-related knowledge, but existing tools were reported to lack of useful functionalities. We present here the development of TWINC, an advanced search engine dedicated to patent retrieval in the domain of health and life sciences. Our tool embeds two search modes: an ad hoc search to retrieve relevant patents given a short query and a related patent search to retrieve similar patents given a patent. Both search modes rely on tuning experiments performed during several patent retrieval competitions. Moreover, TWINC is enhanced with interactive modules, such as chemical query expansion, which is of prior importance to cope with various ways of naming biomedical entities. While the related patent search showed promising performances, the ad-hoc search resulted in fairly contrasted results. Nonetheless, TWINC performed well during the Chemathlon task of the PatOlympics competition and experts appreciated its usability. PMID:22874181

Pasche, Emilie; Gobeill, Julien; Teodoro, Douglas; Gaudinat, Arnaud; Vishnykova, Dina; Lovis, Christian; Ruch, Patrick

2012-01-01

188

Image and video search engine for the World Wide Web  

NASA Astrophysics Data System (ADS)

We describe a visual information system prototype for searching for images and videos on the World-Wide 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 complete system by which visual information on the Web is (1) collected by automated agents, (2) processed in both text and visual feature domains, (3) catalogued and (4) indexed for fast search and retrieval. We introduce an image and video search engine which utilizes both text-based navigation and content-based technology for searching visually through the catalogued images and videos. Finally, we provide an initial evaluation based upon the cataloging of over one half million images and videos collected from the Web.

Smith, John R.; Chang, Shih-Fu

1997-01-01

189

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

190

MedSearch: a specialized search engine for medical information retrieval  

Microsoft Academic Search

People are thirsty for medical information. Existing Web search engines often cannot handle medical search well because they do not consider its special requirements. Often a medical information searcher is uncertain about his exact questions and unfamiliar with medical terminology. Therefore, he sometimes prefers to pose long queries, describing his symptoms and situation in plain English, and receive comprehensive, relevant

Gang Luo; Chunqiang Tang; Hao Yang; Xing Wei

2008-01-01

191

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

192

Personalization Mechanisms for Content Indexing, Search, Retrieval and Presentation in a Multimedia Search Engine  

Microsoft Academic Search

Interest on multimedia content analysis, archival, retrieval and delivery is steadily increasing. This interest emanates from the digital media explosion that we are witnessing. Among others, the growth of multimedia content is compounding the need for more effective methods for searching such information. The automated web search engines that are currently used rely only on text descriptions and as a

Ourania I. Markaki; Dimitris E. Charilas

2009-01-01

193

D-score: a search engine independent MD-score.  

PubMed

While peptides carrying PTMs are routinely identified in gel-free MS, the localization of the PTMs onto the peptide sequences remains challenging. Search engine scores of secondary peptide matches have been used in different approaches in order to infer the quality of site inference, by penalizing the localization whenever the search engine similarly scored two candidate peptides with different site assignments. In the present work, we show how the estimation of posterior error probabilities for peptide candidates allows the estimation of a PTM score called the D-score, for multiple search engine studies. We demonstrate the applicability of this score to three popular search engines: Mascot, OMSSA, and X!Tandem, and evaluate its performance using an already published high resolution data set of synthetic phosphopeptides. For those peptides with phosphorylation site inference uncertainty, the number of spectrum matches with correctly localized phosphorylation increased by up to 25.7% when compared to using Mascot alone, although the actual increase depended on the fragmentation method used. Since this method relies only on search engine scores, it can be readily applied to the scoring of the localization of virtually any modification at no additional experimental or in silico cost. PMID:23307401

Vaudel, Marc; Breiter, Daniela; Beck, Florian; Rahnenführer, Jörg; Martens, Lennart; Zahedi, René P

2013-02-15

194

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

ERIC Educational Resources Information Center

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

Selingo, Jeffrey

1998-01-01

195

DRUMS: a human disease related unique gene mutation search engine.  

PubMed

With the completion of the human genome project and the development of new methods for gene variant detection, the integration of mutation data and its phenotypic consequences has become more important than ever. Among all available resources, locus-specific databases (LSDBs) curate one or more specific genes' mutation data along with high-quality phenotypes. Although some genotype-phenotype data from LSDB have been integrated into central databases little effort has been made to integrate all these data by a search engine approach. In this work, we have developed disease related unique gene mutation search engine (DRUMS), a search engine for human disease related unique gene mutation as a convenient tool for biologists or physicians to retrieve gene variant and related phenotype information. Gene variant and phenotype information were stored in a gene-centred relational database. Moreover, the relationships between mutations and diseases were indexed by the uniform resource identifier from LSDB, or another central database. By querying DRUMS, users can access the most popular mutation databases under one interface. DRUMS could be treated as a domain specific search engine. By using web crawling, indexing, and searching technologies, it provides a competitively efficient interface for searching and retrieving mutation data and their relationships to diseases. The present system is freely accessible at http://www.scbit.org/glif/new/drums/index.html. PMID:21913285

Li, Zuofeng; Liu, Xingnan; Wen, Jingran; Xu, Ye; Zhao, Xin; Li, Xuan; Liu, Lei; Zhang, Xiaoyan

2011-10-01

196

Navigating the InternetA Study of German-Language Search Engines  

Microsoft Academic Search

This article explores the market position, quality and typical usage of German-language search engines. The use of search engines is a common Internet activity - 91 percent of Internet users employ search engines. As search engines occupy the role of gatekeepers in the information jungle of the Internet, a monopoly like Google’s (76 percent market share) is problematic in several

Marcel Machill; Christoph Neuberger; Wolfgang Schweiger; Werner Wirth

2004-01-01

197

A nuclear power plant system engineering workstation  

Microsoft Academic Search

System engineers offer an approach to effective technical support for operation and maintenance of nuclear power plants. System engineer groups are being set up by most utilities in the United States; Institute of Nuclear Power Operations (INPO) and the US Nuclear Regulatory Commission (NRC) have endorsed the concept. The purpose of this paper is to describe a process for developing

J. H. Mason; J. W. Crosby

1989-01-01

198

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.

199

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

Microsoft Academic Search

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

Nanda Kumar; Karl Reiner Lang

2007-01-01

200

Multimedia search engine with relevance feedback  

NASA Astrophysics Data System (ADS)

We present here a web-based protytpe for the interactive search of items in quality electronic catalogues. The system based on a multimedia information retrieval architecture, allows the user to query a multimedia database according to several retrieval strategies, and progressively refine the system's response by indicating the relevance, or non-relevance of the items retrieved. Once a subset of images meeting the user's information needs have been identified, these images can be displayed in a virtual exhibition that can be visited interactively by the user exploiting VRML technology.

Ciocca, Gianluigi; Schettini, Raimondo

2001-12-01

201

Searching for the Next U.S. President: Differences in Search Engine Results for the 2008 U.S. Presidential Candidates  

Microsoft Academic Search

Studies have examined online campaigns but none have researched the role of search engines during elections. This study analyzes search engine results from the 2008 U.S. presidential election. Analyses show that the sources and content generated by three search engines differed among the search engines. The top 3 results from each search engine, however, originated from large, well-trafficked sites. The

Ashley Muddiman

2012-01-01

202

A CLIR Interface to a Web Search Engine  

PubMed Central

Medical document retrieval presents a unique combination of challenges for the design and implementation of retrieval engines. We introduce a method to meet these challenges by implementing a multilingual retrieval interface for biomedical content in the World Wide Web. To this end we developed an automated method for interlingual query construction by which a standard Web search engine is enabled to process non-English queries from the biomedical domain in order to retrieve English documents.

Daumke, Philipp; Schulz, Stefan; Marko, Kornel

2005-01-01

203

Using COTS Search Engines and Custom Query Strategies at CLEF  

Microsoft Academic Search

This paper presents a system for bilingual information retrieval using commercial off- the-shelf search engines (COTS). Several custom query construction, expansion and translation strategies are compared. We present the experiments and the corresponding results for the CLEF 2004 event. In our first participation in the Cross-Language Evaluation Forum (CLEF) we entered the French monolingual task as well as the newcomer

David Nadeau; Mario Jarmasz; Caroline Barrière; George F. Foster; Claude St. Jacques

2004-01-01

204

Mining search engine query logs via suggestion sampling  

Microsoft Academic Search

Many search engines and other web applications suggest auto-completions as the user types in a query. The sugges- tions are generated from hidden underlying databases, such as query logs, directories, and lexicons. These databases consist of interesting and useful information, but they are typically not directly accessible. In this paper we describe two algorithms for sampling sug- gestions using only

Ziv Bar-yossef; Maxim Gurevich

2008-01-01

205

Removing Web Spam Links from Search Engine Results  

Microsoft Academic Search

Web spam denotes the manipulation of web pages with the sole intent to raise their position in search engine rankings. Since a better position in the ran kings directly and positively affects the number of visits to a site, attackers use different techn iques to boost their pages to higher ranks. In the best case, web spam pages are a

Manuel Egele; Christopher Kruegel; Engin Kirda

206

Why Google Cannot Beat Baidu in China Search Engine Market  

Microsoft Academic Search

Recently years, international software providers encounter fierce competition from indigenous software providers in China market. In searching engine market, compared with Google, Baidu is a latecomer. However, by shaping to local userspsila demand, Baidu is dominating the market now. What are the key reasons why Baidu wins the battle with Google? How Baidu leverage local userspsila behavior and get more

Zhaoli Meng; Meiyun Zuo; Jina Fu

2008-01-01

207

A Hierarchy of Search Engines Based on ODP Concepts  

Microsoft Academic Search

This paper reports a query probing strategy which exploits concept hierarchy of open directory project (ODP) to discover knowledge about search engines. In this strategy, keywords are selected on the basis of frequency analysis of words appearing in descriptions of URLs associated with a concept. The selected keywords, their senses and the words adjacent to these keywords are used in

Venkata Sudhakar Reddy Ch; Banshi Dhar Chaudhary

2006-01-01

208

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,…

Moody, Mia; Bates, Elizabeth

2013-01-01

209

Knowledge Based Search Engine: Granular Computing on the Web  

Microsoft Academic Search

Granular Computing is an emerging technology. This paper summarizes its applications to web. A high frequent co-occurring set of keywords is called a keywordset; it rep- resents some concept in the given document set. These con- cepts forms a simplicial complex of concepts, which is re- garded as a knowledge base for a new search engine. The output will be

Tsau Young Lin; Jean-david Hsu

2008-01-01

210

Locality in Search Engine Queries and Its Implications for Caching.  

National Technical Information Service (NTIS)

Caching is a popular technique for reducing both server load and user response time in distributed systems. In this paper, the authors are interested in the question of whether caching might be effective for search engines as well. They study two real sea...

D. O'Hallaron Y. Xie

2001-01-01

211

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

212

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

213

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

214

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

215

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

216

A Novel Interdisciplinary Approach to Deep Web Search Engine  

Microsoft Academic Search

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

Pyke Tin; Thi Thi Zin; Hiromitsu Hama

217

A new statistical method for performance evaluation of search engines  

Microsoft Academic Search

We present a new statistical method for evaluating search engines' precision performance based on sample queries. The method consists of relevance evaluation and statistical comparison. In relevance evaluation, we present two scoring algorithms: one is a term-based algorithm based on the vector space model, and the other is a new three-level algorithm modeled after manual methods commonly used in information

Longzhuang Li; Yi Shang

2000-01-01

218

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

219

Automatic Stream Classification for the Singingfish Search Engine  

Microsoft Academic Search

This paper describes a classification experience that was per- formed on the stream metadata collected by the Singing- fish search engine. Using the categorization created by the Singingfish Content Team, we have tried to assess the per- formances achievable by a simple na¨ive Bayes classifier.

Jean-Ronan Vigouroux; Louis Chevallier; Robert Forthofer; Ted Diamond; Eric Rehm

220

Social Network Models for Enhancing Reference Based Search Engine Rankings  

Microsoft Academic Search

This chapter elaborates on a twofold approach on models of web search engine retrieval and more specifically the way information resources are ranked in the query results. In particular, current models of information retrieval are blind to the social context that surrounds information resources thus do not consider the trustworthiness of their authors when they present the query results to

Nikolaos Korfiatis; Miguel-Angel Sicilia; Claudia Hess; Klaus Stein; Christoph Schlieder

221

Semantically Augmented DCG Analysis for Next generation Search Engine  

Microsoft Academic Search

In this paper, we describe an extension to the well-known DCG's (Definite Clause Grammars) to allow for semantic analysis, and generate semantically-based description of the sentence at hand. This approach has been the basis for the development of a new search engine called Mnemosine, which is able to interact with a user in natural language and to provide contextual answer

Stefania Costantini; Alessio Paolucci

222

Unified power engineering laboratory for electromechanical energy  

Microsoft Academic Search

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

T. Gedra; Seungwon An

2004-01-01

223

Engineering laccases: in search for novel catalysts.  

PubMed

Laccases (p-diphenol oxidase, EC 1.10.3.2) are blue multicopper oxidases that catalyze the reduction of dioxygen to water, with a concomitant oxidation of small organic substrates. Since the description at the end of the nineteenth century of a factor catalyzing the rapid hardening of the latex of the Japanese lacquer trees (Rhus sp.) exposed to air laccases from different origins (plants, fungi bacteria) have been continuously discovered and extensively studied. Nowadays, molecular evolution and other powerful protein modification techniques offer possibilities to develop tailored laccases for a wide array of applications including drug synthesis, biosensors or biofuel cells. Here, we give an overview on strategies and results of our laboratory in the design of new biocatalysts based on laccases. PMID:21966250

Robert, Viviane; Mekmouche, Yasmina; Pailley, Pierre R; Tron, Thierry

2011-04-01

224

Searching for the Engine in NGC 2264  

NASA Astrophysics Data System (ADS)

NGC 2264 is one of the most interesting regions of nearby massive star formation. It contains the relatively isolated luminous infrared source IRS 1 and a variety of other young stellar objects. Our observations obtained with the IRAM Plateau de Bure millimetre interferometer and supplemented by HST NICMOS data as well as ground-based near- and mid-infrared data reveal for the first time the detailed structure of this star-forming region. We find that IRS 1 and its low-mass companions are located in a low-density cavity which is surrounded by the remaining dense cloud core. We detect a deeply embedded very young stellar object close to IRS 1 which powers a highly collimated bipolar outflow. In addition we find strong evidence for an object with a circumbinary disk associated with two bipolar outflows. All those detection will be placed in a general scheme of massive star formation.

Henning, Thomas; Schreyer, Katharina; Stecklum, Bringfried; Linz, Hendrik

225

Through the Google Goggles: Sociopolitical Bias in Search Engine Design  

NASA Astrophysics Data System (ADS)

Search engines like Google are essential to navigating the Web's endless supply of news, political information, and citizen discourse. The mechanisms and conditions under which search results are selected should therefore be of considerable interest to media scholars, political theorists, and citizens alike. In this chapter, I adopt a "deliberative" ideal for search engines and examine whether Google exhibits the "same old" media biases of mainstreaming, hypercommercialism, and industry consolidation. In the end, serious objections to Google are raised: Google may favor popularity over richness; it provides advertising that competes directly with "editorial" content; it so overwhelmingly dominates the industry that users seldom get a second opinion, and this is unlikely to change. Ultimately, however, the results of this analysis may speak less about Google than about contradictions in the deliberative ideal and the so-called "inherently democratic" nature of the Web.

Diaz, A.

226

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.

227

WebPosition Gold Search Engine and Web Promotion Software  

NSDL National Science Digital Library

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

1997-01-01

228

10 most powerful ideas in software engineering  

Microsoft Academic Search

Summary form only given. At software engineering's 40th birthday, do we know which software engineering ideas matter most? In this talk, award-winning author Steve McConnell identifies 10 of the most powerful ideas in software engineering. McConnell explains how the 10 ideas form the foundation for effective software development, and he shows how practices ranging from the waterfall model to extreme

Steve Mcconnell

2009-01-01

229

Ramgen Power Systems for Military Engine Applications.  

National Technical Information Service (NTIS)

Ramgen Power Systems, Inc. (RPS) is developing two high efficiency gas turbine engine concepts that combine many of the proven features of supersonic compression and expansion systems, commonly used in supersonic flight inlet and nozzle designs, with conv...

C. W. Sohn D. Brown D. Mahoney F. H. Holcomb G. Tamm

2007-01-01

230

Soviet Geothermal Electric Power Engineering - Report 2.  

National Technical Information Service (NTIS)

The report provides information on Soviet geothermal research and engineering associated with the design, construction, and maintenance of geothermal power plants and related facilities. Besides a general outline of geothermal characteristics, emphasis in...

V. A. Stevovich

1972-01-01

231

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

232

Maximum power configuration for multireservoir chemical engines  

Microsoft Academic Search

A model of a multireservoir isothermal endoreversible chemical engine is put forward in this paper. Optimal control theory is used to determine the optimal configuration of the multireservoir isothermal endoreversible chemical engine for maximum power output. The optimal cycle consists of two constant chemical potential branches and two instantaneous constant mass-flux branches, which is independent of the number of mass

Shaojun Xia; Lingen Chen; Fengrui Sun

2009-01-01

233

Power lever apparatus for a turbine engine  

Microsoft Academic Search

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

McCombs Jr

1985-01-01

234

Design and Evaluation of the iMed Intelligent Medical Search Engine  

Microsoft Academic Search

Searching for medical information on the Web is popular and important. However, medical search has its own unique requirements that are poorly handled by existing medical Web search engines. This paper presents iMed, the first intelligent medical Web search engine that extensively uses medical knowledge and questionnaire to facilitate ordinary Internet users to search for medical information. iMed introduces and

Gang Luo

2009-01-01

235

40 CFR 1039.140 - What is my engine's maximum engine power?  

Code of Federal Regulations, 2013 CFR

...COMPRESSION-IGNITION ENGINES Emission Standards and Related Requirements ...power point on the nominal power curve for the engine configuration... (b) The nominal power curve of an engine configuration...also be expressed by a torque curve that relates maximum...

2013-07-01

236

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

Code of Federal Regulations, 2013 CFR

... 2013-01-01 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...

2013-01-01

237

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

Code of Federal Regulations, 2013 CFR

... 2013-01-01 false Airplanes: Turbine engine powered: En route limitations...Limitations § 121.191 Airplanes: Turbine engine powered: En route limitations...inoperative. (a) No person operating a turbine engine powered airplane may...

2013-01-01

238

Finding Business Information on the "Invisible Web": Search Utilities vs. Conventional Search Engines.  

ERIC Educational Resources Information Center

|Researchers for small businesses, which may have no access to expensive databases or market research reports, must often rely on information found on the Internet, which can be difficult to find. Although current conventional Internet search engines are now able to index over on billion documents, there are many more documents existing in…

Darrah, Brenda

239

Guidelines for modeling power electronics in electric power engineering applications  

SciTech Connect

This paper presents a summary of guidelines for modeling power electronics in various power engineering applications. This document is designed for use by power engineers who need to simulate power electronic devices and sub-systems with digital computer programs. The guideline emphasizes the basic issues that are critical for successfully modeling power electronics devices and the interface between power electronics and the utility or industrial system. The modeling considerations addressed in this guideline are generic for all power electronics modeling independent of the computational tool. However, for the purposes of illustration, the simulation examples presented are based on the EMTP or EMTP type of programs. The procedures used to implement power electronics models in these examples are valuable for using other digital simulation tools.

NONE

1997-01-01

240

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

NASA Astrophysics Data System (ADS)

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

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

241

Query Log Analysis of an Electronic Health Record Search Engine  

PubMed Central

We analyzed a longitudinal collection of query logs of a full-text search engine designed to facilitate information retrieval in electronic health records (EHR). The collection, 202,905 queries and 35,928 user sessions recorded over a course of 4 years, represents the information-seeking behavior of 533 medical professionals, including frontline practitioners, coding personnel, patient safety officers, and biomedical researchers for patient data stored in EHR systems. In this paper, we present descriptive statistics of the queries, a categorization of information needs manifested through the queries, as well as temporal patterns of the users’ information-seeking behavior. The results suggest that information needs in medical domain are substantially more sophisticated than those that general-purpose web search engines need to accommodate. Therefore, we envision there exists a significant challenge, along with significant opportunities, to provide intelligent query recommendations to facilitate information retrieval in EHR.

Yang, Lei; Mei, Qiaozhu; Zheng, Kai; Hanauer, David A.

2011-01-01

242

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

243

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.

2007-09-25

244

Design of Enterprise Competitor Information Search Engine Based on Web Service  

Microsoft Academic Search

Basing on web service technology, the enterprise competitor information search engine comes true. This engine can intelligently search out target HTML pages from many enterprises' portals website and has good expansibility, security and validity.

Song Kezhen; Cheng Chuanhui

2011-01-01

245

Removing web spam links from search engine results  

Microsoft Academic Search

Web spam denotes the manipulation of web pages with the sole intent to raise their position in search engine rankings. Since\\u000a a better position in the rankings directly and positively affects the number of visits to a site, attackers use different\\u000a techniques to boost their pages to higher ranks. In the best case, web spam pages are a nuisance that

Manuel Egele; Clemens Kolbitsch; Christian Platzer

2011-01-01

246

BDI Planning Approach to Distributed Multiagent Based Semantic Search Engine  

Microsoft Academic Search

This paper proposes a distributed multiagent architecture based on philosophical model of human practical reasoning for web\\u000a search engine. The paper handles incompletely specified goals using Belief Desire and Intention model of practical reasoning in two stages. In the first stage deliberation cycle begins by accepting input query from the\\u000a user and then presents the user with a set of

Mehta Shikha; Hema Banati; Punam Bedi

2009-01-01

247

Modification Site Localization Scoring Integrated into a Search Engine*  

PubMed Central

Large proteomic data sets identifying hundreds or thousands of modified peptides are becoming increasingly common in the literature. Several methods for assessing the reliability of peptide identifications both at the individual peptide or data set level have become established. However, tools for measuring the confidence of modification site assignments are sparse and are not often employed. A few tools for estimating phosphorylation site assignment reliabilities have been developed, but these are not integral to a search engine, so require a particular search engine output for a second step of processing. They may also require use of a particular fragmentation method and are mostly only applicable for phosphorylation analysis, rather than post-translational modifications analysis in general. In this study, we present the performance of site assignment scoring that is directly integrated into the search engine Protein Prospector, which allows site assignment reliability to be automatically reported for all modifications present in an identified peptide. It clearly indicates when a site assignment is ambiguous (and if so, between which residues), and reports an assignment score that can be translated into a reliability measure for individual site assignments.

Baker, Peter R.; Trinidad, Jonathan C.; Chalkley, Robert J.

2011-01-01

248

Modification site localization scoring integrated into a search engine.  

PubMed

Large proteomic data sets identifying hundreds or thousands of modified peptides are becoming increasingly common in the literature. Several methods for assessing the reliability of peptide identifications both at the individual peptide or data set level have become established. However, tools for measuring the confidence of modification site assignments are sparse and are not often employed. A few tools for estimating phosphorylation site assignment reliabilities have been developed, but these are not integral to a search engine, so require a particular search engine output for a second step of processing. They may also require use of a particular fragmentation method and are mostly only applicable for phosphorylation analysis, rather than post-translational modifications analysis in general. In this study, we present the performance of site assignment scoring that is directly integrated into the search engine Protein Prospector, which allows site assignment reliability to be automatically reported for all modifications present in an identified peptide. It clearly indicates when a site assignment is ambiguous (and if so, between which residues), and reports an assignment score that can be translated into a reliability measure for individual site assignments. PMID:21490164

Baker, Peter R; Trinidad, Jonathan C; Chalkley, Robert J

2011-04-13

249

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

PubMed

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

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

2010-01-15

250

Research on the application of personalization search engines in information service industry  

Microsoft Academic Search

Network technology has improved the development of traditional information services, and searching engine technology has become increasingly used in information services. This article surveys some samples that searching engine technology used in different kinds of area firstly, and then listing the current application of some representative users. Secondly, it summed up the requirements of searching engine in different areas and

Huaqiao Lv; Peng Li; Lugang Guo

2010-01-01

251

Mining search engine query logs for social filtering-based query recommendation  

Microsoft Academic Search

This paper presents a simple and intuitive method for mining search engine query logs for fast social filtering, where searchers are provided with dynamic query recommendations on a large-scale industrial-strength search engine. We adopt a dynamic approach that is able to absorb new and recent trends in web usage trends on search engines, while forgetting outdated trends, thus adapting to

Zhiyong Zhang; Olfa Nasraoui

2008-01-01

252

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

Microsoft Academic Search

The performance and capabilities of Web search engines is an important and significant area of research. Millions of people world wide use Web search engines very day. This paper reports the results of a major study examining the overlap among results retrieved by multiple Web search engines for a large set of more than 10,000 queries. Previous smaller studies have

Amanda Spink; Bernard J. Jansen; Chris Blakely; Sherry Koshman

2006-01-01

253

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

254

Deep into web general vs vertical search engine design based on secure and QoS  

Microsoft Academic Search

lsearch engines are targeted to specific areas of the network information of the coverage is relatively high, with a reliable technical and information resources and support, with clear targeting search effectively compensate for a comprehensive search engine on a specific topic areas of expertise and information coverage too low. Mainly by the vertical search engine focused crawler module, the index

Wang Da-quan; Wang Tian; Zhang Lin; Wu Ai-ping; Zhou Qi-li; Wu Xiao-kai

2011-01-01

255

Miniature Stirling engines for artificial heart power  

SciTech Connect

A national effort to develop a fully implantable artificial heart has included thermal power sources since 1967. Two of seven artificial heart thermal converter programs funded by the National Institutes of Health (NIH) and/or the Department of Energy (DOE) remain active. The technical requirements for an implantable engine with a ten year maintenance-free operating life represent perhaps the most demanding application ever considered for Stirling engines. Existing hardware versions of engines from the two continuing programs have recorded impressive performance and lifetime data. Pending versions are expected to meet all the stringent operating requirements and eventually be qualified for use in humans. The artificial heart thermal power source program provides a unique forum for meaningful comparison of innovative and conventional Stirling engine concepts in an arena of professionally executed advanced technology programs which in aggregate represent more than forty million dollars in developmental funding.

White, M.A.

1983-08-01

256

Searching and Surfing the Web Using a Semi-Adaptive Meta-Engine  

Microsoft Academic Search

Global Search1 is a web agent which integrates and en- hances many well known search techniques in order to im- prove the quality of information gathered from usual web search engines. It features intelligent merging of relevant documents from different search engines, anticipated adap- tive exploration and evaluation of links from the current re- sult set, automated derivation of refined

A. Castellucci; Giovambattista Ianni; Domenico Vasile; S. Costa

2001-01-01

257

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

258

A search engine for the engineering and equipment data management system (EDMS) at CERN  

NASA Astrophysics Data System (ADS)

CERN, the European Laboratory for Particle Physics, located in Geneva -Switzerland, is currently building the LHC (Large Hadron Collider), a 27 km particle accelerator. The equipment life-cycle management of this project is provided by the Engineering and Equipment Data Management System (EDMS [1] [2]) Service. Using an Oracle database, it supports the management and follow-up of different kinds of documentation through the whole life cycle of the LHC project: design, manufacturing, installation, commissioning data etc... The equipment data collection phase is now slowing down and the project is getting closer to the 'As-Built' phase: the phase of the project consuming and exploring the large volumes of data stored since 1996. Searching through millions of items of information (documents, equipment parts, operations...) multiplied by dozens of points of view (operators, maintainers...) requires an efficient and flexible search engine. This paper describes the process followed by the team to implement the search engine for the LHC As-built project in the EDMS Service. The emphasis is put on the design decision to decouple the search engine from any user interface, potentially enabling other systems to also use it. Projections, algorithms, and the planned implementation are described in this paper. The implementation of the first version started in early 2007.

Tsyganov, A.; Amérigo, S. M.; Petit, S.; Pettersson, T.; Suwalska, A.

2008-07-01

259

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

NASA Astrophysics Data System (ADS)

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

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

2006-12-01

260

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

Code of Federal Regulations, 2010 CFR

...power, displacement, power density, and maximum in-use engine...displacement, and power density of an engine for the purposes...e) Throughout this part, references to a specific power value...an engine family's power density in kW/L by dividing...

2010-07-01

261

Self-learning and self-personalizing knowledge search engine that delivers holistic results  

US Patent & Trademark Office Database

A search engine provides intelligent multi-dimensional searches, in which the search engine always presents a complete, holistic result, and in which the search engine presents knowledge (i.e. linked facts) and not just information (i.e. facts). The search engine is adaptive, such that the search results improve over time as the system learns about the user and develops a user profile. Thus, the search engine is self personalizing, i.e. it collects and analyzes the user history, and/or it has the user react to solutions and learns from such user reactions. The search engine generates profiles, e.g. it learns from all searches of all users and combines the user profiles and patterns of similar users. The search engine accepts direct user feedback to improve the next search iteration One feature of the invention is locking/unlocking, where a user may select specific attributes that are to remain locked while the search engine matches these locked attributes to all unlocked attributes. The user may also specify details about characteristics, provide and/or receive qualitative ratings of an overall result, and introduce additional criteria to the search strategy or select a search algorithm. Additionally, the system can be set up such that it does not require a keyboard and/or mouse interface, e.g. it can operate with a television remote control or other such human interface.

Biffar; Peter (Palo Alto, CA)

2002-05-28

262

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

NASA Astrophysics Data System (ADS)

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

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

263

Detecting influenza epidemics using search engine query data.  

PubMed

Seasonal influenza epidemics are a major public health concern, causing tens of millions of respiratory illnesses and 250,000 to 500,000 deaths worldwide each year. In addition to seasonal influenza, a new strain of influenza virus against which no previous immunity exists and that demonstrates human-to-human transmission could result in a pandemic with millions of fatalities. Early detection of disease activity, when followed by a rapid response, can reduce the impact of both seasonal and pandemic influenza. One way to improve early detection is to monitor health-seeking behaviour in the form of queries to online search engines, which are submitted by millions of users around the world each day. Here we present a method of analysing large numbers of Google search queries to track influenza-like illness in a population. Because the relative frequency of certain queries is highly correlated with the percentage of physician visits in which a patient presents with influenza-like symptoms, we can accurately estimate the current level of weekly influenza activity in each region of the United States, with a reporting lag of about one day. This approach may make it possible to use search queries to detect influenza epidemics in areas with a large population of web search users. PMID:19020500

Ginsberg, Jeremy; Mohebbi, Matthew H; Patel, Rajan S; Brammer, Lynnette; Smolinski, Mark S; Brilliant, Larry

2009-02-19

264

Using search engine technology for protein function prediction.  

PubMed

Prediction of protein function is one of the most challenging problems in the post-genomic era. In this paper, we propose a novel algorithm Improved ProteinRank (IPR) for protein function prediction, which is based on the search engine technology and the preferential attachment criteria. In addition, an improved algorithm IPRW is developed from IPR to be used in the weighted protein?protein interaction (PPI) network. The proposed algorithms IPR and IPRW are applied to the PPI network of S.cerevisiae. The experimental results show that both IPR and IPRW outweigh the previous methods for the prediction of protein functions. PMID:21441099

Chen, Ziyang; Cai, Zhao; Li, Min; Liu, Binbin

2011-01-01

265

Search engine processor: Filtering and organizing peptide spectrum matches.  

PubMed

The search engine processor (SEPro) is a tool for filtering, organizing, sharing, and displaying peptide spectrum matches. It employs a novel three-tier Bayesian approach that uses layers of spectrum, peptide, and protein logic to lead the data to converge to a single list of reliable protein identifications. SEPro is integrated into the PatternLab for proteomics environment, where an arsenal of tools for analyzing shotgun proteomic data is provided. By using the semi-labeled decoy approach for benchmarking, we show that SEPro significantly outperforms a commercially available competitor. PMID:22311825

Carvalho, Paulo C; Fischer, Juliana S G; Xu, Tao; Cociorva, Daniel; Balbuena, Tiago S; Valente, Richard H; Perales, Jonas; Yates, John R; Barbosa, Valmir C

2012-04-01

266

Power distribution engineering: Fundamentals and applications  

SciTech Connect

Covering virtually all areas of distribution engineering, this thoroughly up-to-date reference examines the unique behavior of utilities and provides the practical knowledge necessary to solve real-world distribution problems. Simplifying seemingly difficult concepts and calculations, Power Distribution Engineering addresses topics typically associated with power quality such as sags, swells, harmonics, electromagnetic fields, and stray voltage; describes different types of system designs and grounding as well as values for voltage, line lengths, and load and fault levels; details the loading, construction, and rating of various transformers; presents methods to maximize the effectiveness of capacitor placement; explains overcurrent and overvoltage protection of distribution systems; evaluates utilities using economic techniques that incorporate ideas such as present worth, carrying charge, cost of losses, operating costs, and customer satisfaction. Furnishing over 425 helpful equations, tables, drawings, and photographs, Power Distribution Engineering is an invaluable resource for electrical and electronics, utility distribution, power systems, control, protection, and relaying engineers, as well as graduate students in these disciplines.

Burke, J.J.

1994-01-01

267

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

268

GGRNA: an ultrafast, transcript-oriented search engine for genes and transcripts  

PubMed Central

GGRNA (http://GGRNA.dbcls.jp/) is a Google-like, ultrafast search engine for genes and transcripts. The web server accepts arbitrary words and phrases, such as gene names, IDs, gene descriptions, annotations of gene and even nucleotide/amino acid sequences through one simple search box, and quickly returns relevant RefSeq transcripts. A typical search takes just a few seconds, which dramatically enhances the usability of routine searching. In particular, GGRNA can search sequences as short as 10 nt or 4 amino acids, which cannot be handled easily by popular sequence analysis tools. Nucleotide sequences can be searched allowing up to three mismatches, or the query sequences may contain degenerate nucleotide codes (e.g. N, R, Y, S). Furthermore, Gene Ontology annotations, Enzyme Commission numbers and probe sequences of catalog microarrays are also incorporated into GGRNA, which may help users to conduct searches by various types of keywords. GGRNA web server will provide a simple and powerful interface for finding genes and transcripts for a wide range of users. All services at GGRNA are provided free of charge to all users.

Naito, Yuki; Bono, Hidemasa

2012-01-01

269

GGRNA: an ultrafast, transcript-oriented search engine for genes and transcripts.  

PubMed

GGRNA (http://GGRNA.dbcls.jp/) is a Google-like, ultrafast search engine for genes and transcripts. The web server accepts arbitrary words and phrases, such as gene names, IDs, gene descriptions, annotations of gene and even nucleotide/amino acid sequences through one simple search box, and quickly returns relevant RefSeq transcripts. A typical search takes just a few seconds, which dramatically enhances the usability of routine searching. In particular, GGRNA can search sequences as short as 10 nt or 4 amino acids, which cannot be handled easily by popular sequence analysis tools. Nucleotide sequences can be searched allowing up to three mismatches, or the query sequences may contain degenerate nucleotide codes (e.g. N, R, Y, S). Furthermore, Gene Ontology annotations, Enzyme Commission numbers and probe sequences of catalog microarrays are also incorporated into GGRNA, which may help users to conduct searches by various types of keywords. GGRNA web server will provide a simple and powerful interface for finding genes and transcripts for a wide range of users. All services at GGRNA are provided free of charge to all users. PMID:22641850

Naito, Yuki; Bono, Hidemasa

2012-05-28

270

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

271

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

272

MuZeeker: Adapting a Music Search Engine for Mobile Phones  

Microsoft Academic Search

\\u000a We describe MuZeeker, a search engine with domain knowledge based on Wikipedia. MuZeeker enables the user to refine a search\\u000a in multiple steps by means of category selection. In the present version we focus on multimedia search related to music and\\u000a we present two prototype search applications (web-based and mobile) and discuss the issues involved in adapting the search\\u000a engine

Jakob Eg Larsen; Søren Halling; Magnús Sigurðsson; Lars Kai Hansen

2008-01-01

273

Tocorime Apicu: design and validation of an experimental search engine  

NASA Astrophysics Data System (ADS)

In the development of an integrated, experimental search engine, Tocorime Apicu, the incorporation and emulation of the evolutionary aspects of the chosen biological model (honeybees) and the field of high-performance knowledge discovery in databases results in the coupling of diverse fields of research: evolutionary computations, biological modeling, machine learning, statistical methods, information retrieval systems, active networks, and data visualization. The use of computer systems provides inherent sources of self-similarity traffic that result from the interaction of file transmission, caching mechanisms, and user-related processes. These user-related processes are initiated by the user, application programs, or the operating system (OS) for the user's benefit. The effect of Web transmission patterns, coupled with these inherent sources of self-similarity associated with the above file system characteristics, provide an environment for studying network traffic. The goal of the study was client-based, but with no user interaction. New methodologies and approaches were needed as network packet traffic increased in the LAN, LAN+WAN, and WAN. Statistical tools and methods for analyzing datasets were used to organize data captured at the packet level for network traffic between individual source/destination pairs. Emulation of the evolutionary aspects of the biological model equips the experimental search engine with an adaptive system model which will eventually have the capability to evolve with an ever- changing World Wide Web environment. The results were generated using a LINUX OS.

Walker, Reginald L.

2001-07-01

274

A Taxonomic Search Engine: Federating taxonomic databases using web services  

PubMed Central

Background The taxonomic name of an organism is a key link between different databases that store information on that organism. However, in the absence of a single, comprehensive database of organism names, individual databases lack an easy means of checking the correctness of a name. Furthermore, the same organism may have more than one name, and the same name may apply to more than one organism. Results The Taxonomic Search Engine (TSE) is a web application written in PHP that queries multiple taxonomic databases (ITIS, Index Fungorum, IPNI, NCBI, and uBIO) and summarises the results in a consistent format. It supports "drill-down" queries to retrieve a specific record. The TSE can optionally suggest alternative spellings the user can try. It also acts as a Life Science Identifier (LSID) authority for the source taxonomic databases, providing globally unique identifiers (and associated metadata) for each name. Conclusion The Taxonomic Search Engine is available at and provides a simple demonstration of the potential of the federated approach to providing access to taxonomic names.

Page, Roderic DM

2005-01-01

275

Combined heat and power economic dispatch by harmony search algorithm  

Microsoft Academic Search

The optimal utilization of multiple combined heat and power (CHP) systems is a complicated problem that needs powerful methods to solve. This paper presents a harmony search (HS) algorithm to solve the combined heat and power economic dispatch (CHPED) problem. The HS algorithm is a recently developed meta-heuristic algorithm, and has been very successful in a wide variety of optimization

A. Vasebi; M. Fesanghary; S. M. T. Bathaee

2007-01-01

276

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

Microsoft Academic Search

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

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

2012-01-01

277

Autonomous visual model building based on image crawling through internet search engines  

Microsoft Academic Search

In this paper, we propose an autonomous learning scheme to automatically build visual semantic concept models from the output data of Internet search engines without any manual labeling work. First of all, images are gathered by crawling through the Internet using a search engine such as Google. Then, we model the search results as \\

Xiaodan Song; Ching-Yung Lin; Ming-Ting Sun

2004-01-01

278

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

279

Lessons learned from building the iMED intelligent medical search engine  

Microsoft Academic Search

Searching for medical information on the Web has become highly popular, but it remains a challenging task because searchers are often uncertain about their exact medical situations and unfamiliar with medical terminology. To address this challenge, we have built an intelligent medical Web search engine called iMed. iMed introduces and extends expert system technology into the search engine domain. It

Gang Luo

2009-01-01

280

Automatic Extraction of Dynamic Record Sections From Search Engine Result Pages  

Microsoft Academic Search

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

Hongkun Zhao; Weiyi Meng; Clement T. Yu

2006-01-01

281

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

282

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

283

The Value of Search Engine Optimization: An Action Research Project at a New E-Commerce Site  

Microsoft Academic Search

A Web site that wants to increase its number of visitors can pay for search engine ads or attempt to improve its natural search engine ranking. Nobody really knows, which, if either, of these methods provides a positive return on investment (ROI). A search engine optimization (SEO) project was undertaken at a new e-commerce site. The site’s search engine rankings

Ross A. Malaga

2007-01-01

284

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

285

The Gaze of the Perfect Search Engine: Google as an Infrastructure of Dataveillance  

Microsoft Academic Search

Web search engines have emerged as a ubiquitous and vital tool for the successful navigation of the growing online informational\\u000a sphere. The goal of the world’s largest search engine, Google, is to “organize the world’s information and make it universally\\u000a accessible and useful” and to create the “perfect search engine” that provides only intuitive, personalized, and relevant\\u000a results. While intended

M. Zimmer

2008-01-01

286

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

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

2011-01-01

287

Hybridizing harmony search algorithm with sequential quadratic programming for engineering optimization problems  

Microsoft Academic Search

This study presents a hybrid harmony search algorithm (HHSA) to solve engineering optimization problems with continuous design variables. Although the harmony search algorithm (HSA) has proven its ability of finding near global regions within a reasonable time, it is comparatively inefficient in performing local search. In this study sequential quadratic programming (SQP) is employed to speed up local search and

M. Fesanghary; M. Mahdavi; M. Minaryjolandan; Y. Alizadeh

2008-01-01

288

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

289

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

290

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

Code of Federal Regulations, 2010 CFR

...2009-01-01 2009-01-01 false Airplanes: Reciprocating engine-powered: En...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.181 Airplanes: Reciprocating engine-powered:...

2009-01-01

291

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

Code of Federal Regulations, 2010 CFR

...2009-01-01 2009-01-01 false Airplanes: Turbine engine powered: En route...FLAG, AND SUPPLEMENTAL OPERATIONS Airplane Performance Operating Limitations § 121.191 Airplanes: Turbine engine powered: En...

2009-01-01

292

Improving sensitivity in proteome studies by analysis of false discovery rates for multiple search engines  

PubMed Central

Tandem mass spectrometry, run in combination with liquid chromatography (LC-MS/MS), can generate large numbers of peptide and protein identifications, for which a variety of database search engines are available. Distinguishing correct identifications from false positives is far from trivial because all data sets are noisy, and tend to be too large for manual inspection, therefore probabilistic methods must be employed to balance the trade-off between sensitivity and specificity. Decoy databases are becoming widely used to place statistical confidence in results sets, allowing the false discovery rate (FDR) to be estimated. It has previously been demonstrated that different MS search engines produce different peptide identification sets, and as such, employing more than one search engine could result in an increased number of peptides being identified. However, such efforts are hindered by the lack of a single scoring framework employed by all search engines. We have developed a search engine independent scoring framework based on FDR which allows peptide identifications from different search engines to be combined, called the FDRScore. We observe that peptide identifications made by three search engines are infrequently false positives, and identifications made by only a single search engine, even with a strong score from the source search engine, are significantly more likely to be false positives. We have developed a second score based on the FDR within peptide identifications grouped according to the set of search engines that have made the identification, called the combined FDRScore. We demonstrate by searching large publicly available data sets that the combined FDRScore can differentiate between between correct and incorrect peptide identifications with high accuracy, allowing on average 35% more peptide identifications to be made at a fixed FDR than using a single search engine.

Jones, Andrew R.; Siepen, Jennifer A.; Hubbard, Simon J.; Paton, Norman W.

2010-01-01

293

OrChem - An open source chemistry search engine for Oracle®  

PubMed Central

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

2009-01-01

294

The Gaze of the Perfect Search Engine: Google as an Infrastructure of Dataveillance  

NASA Astrophysics Data System (ADS)

Web search engines have emerged as a ubiquitous and vital tool for the successful navigation of the growing online informational sphere. The goal of the world's largest search engine, Google, is to "organize the world's information and make it universally accessible and useful" and to create the "perfect search engine" that provides only intuitive, personalized, and relevant results. While intended to enhance intellectual mobility in the online sphere, this chapter reveals that the quest for the perfect search engine requires the widespread monitoring and aggregation of a users' online personal and intellectual activities, threatening the values the perfect search engines were designed to sustain. It argues that these search-based infrastructures of dataveillance contribute to a rapidly emerging "soft cage" of everyday digital surveillance, where they, like other dataveillance technologies before them, contribute to the curtailing of individual freedom, affect users' sense of self, and present issues of deep discrimination and social justice.

Zimmer, M.

295

The power formula for atmospheric Stirling engines  

NASA Astrophysics Data System (ADS)

A new proposed formula allows the evaluation of the indicated power of an atmospheric Stirling engine by means of minimum working fluid volume, mean arithmetical pressure difference and correction factors for dead space and compression ratio, grounded on the simplest geometrical and design characteristics. The practical example given in this paper presents the comparison among the Beale formula and other similar equations, developed by other authors, showing various degrees of accuracy. Closer approximation has been reached by the proposed formula in comparison with other expressions.

Kolin, Ivo; Lista, Paolo; Naso, Vincenzo

296

Heat engine development for solar thermal power systems  

NASA Astrophysics Data System (ADS)

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 development of Stirling and high temperature Brayton for automotive applications was studied which utilizes much of the technology developed in this automotive program for solar power engines. The technical status of the engine candidates is reviewed and the components that may additional development to meet solar thermal system requirements are identified.

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

297

Mining Association Rules for Adaptive Search Engine Based on RDF Technology  

Microsoft Academic Search

A method for mining association rules that reflect the behaviors of past users is proposed for an adaptive search engine. The logs of the users' retrieving behaviors are described with the resource description framework model, from which association rules that reflect successful retrieving behaviors are extracted. The extracted rules are used to improve the performance of a metadata-based search engine.

Yasufumi Takama; Shunichi Hattori

2007-01-01

298

An investigation of user attitudes toward search engines as an information retrieval tool  

Microsoft Academic Search

After the Internet has gained great popularity at homes and schools, there is much information on the Web. Today, one of the primary uses of the Internet is information retrieval from search engines. The main purpose of the current study is to develop and examine an individual attitude model towards search engines as a tool for retrieving information. This model

Shu-Sheng Liaw; Hsiu-Mei Huang

2003-01-01

299

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

300

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

301

Essie: A Concept-based Search Engine for Structured Biomedical Text  

Microsoft Academic Search

This article describes the algorithms implemented in the Essie search engine that is currently serving several Web sites at the National Library of Medicine. Essie is a phrase-based search engine with term and concept query expansion and probabilistic relevancy ranking. Essie's design is motivated by an observation that query terms are often conceptually related to terms in a document, without

NICHOLAS C. IDE; RUSSELL F. LOANE; DINA DEMNER-FUSHMAN

2007-01-01

302

Application of Information Technology: Essie: A Concept-based Search Engine for Structured Biomedical Text  

Microsoft Academic Search

This article describes the algorithms implemented in the Essie search engine that is currently serving several Web sites at the National Library of Medicine. Essie is a phrase-based search engine with term and concept query expansion and probabilistic relevancy ranking. Essie’s design is motivated by an observation that query terms are often conceptually related to terms in a document, without

Nicholas C. Ide; Russell F. Loane; Dina Demner-Fushman

2007-01-01

303

Designing clustering-based web crawling policies for search engine crawlers  

Microsoft Academic Search

The World Wide Web is growing and changing at an astonishing rate. Web information systems such as search engines have to keep up with the growth and change of the Web. Due to resource constraints, search engines usually have difficulties keeping the local database completely synchronized with the Web. In this paper, we study how tomake good use of the

Qingzhao Tan; Prasenjit Mitra; C. Lee Giles

2007-01-01

304

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

305

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

306

Internet Search Engines and Opacs: Getting the Best of Two Worlds  

Microsoft Academic Search

This paper reports a pragmatic experiment, consisting on the integration of a Web search engine with a traditional library's catalogue. PORBASE is the Portuguese bibliographic union catalogue. It holds more than one million of bibliographic and nearly half a million of authoritative structured records about authors, families, organizations and subjects. tumba! is a search engine specialized in indexing web pages

José Luis Borbinha; Nuno Freire; Mário J. Silva; Bruno Martins

2003-01-01

307

Using a WWW Search Engine to Evaluate Normalization Performance for a Highly Inflectional Language  

Microsoft Academic Search

Incorporation of language techniques in various web search engines has shown both positive and negative e ffects on retrieval performance. This paper describes an experiment conducted to determine the impact document and query normalization has on retrieval performance of a Greek web search engine. Experiments especially focus on the measurement of Recall and Precision of the obtained results and show

Alexandros Ntoulas; Sofia Stamou; Manolis Tzagarakis

2001-01-01

308

A small company's dilemma: using search engines effectively for corporate sales  

Microsoft Academic Search

Purpose – Smaller companies must continually review the pay-per-click (PPC) option or an organic listing on search engines. The purpose of this paper is to present a case study of a small manufacturing firm that is beginning to evaluate which search engine, Yahoo or Google, is more cost effective. Ultimately, management would like to identify if PPC advertising is worth

Kristin Kennedy; Bonnie Brayton Kennedy

2008-01-01

309

[Biomedical information on the internet using search engines. A one-year trial].  

PubMed

The internet is a communication medium and content distributor that provide information in the general sense but it could be of great utility regarding as the search and retrieval of biomedical information. Search engines represent a great deal to rapidly find information on the net. However, we do not know whether general search engines and meta-search ones are reliable in order to find useful and validated biomedical information. The aim of our study was to verify the reproducibility of a search by key-words (pediatric or evidence) using 9 international search engines and 1 meta-search engine at the baseline and after a one year period. We analysed the first 20 citations as output of each searching. We evaluated the formal quality of Web-sites and their domain extensions. Moreover, we compared the output of each search at the start of this study and after a one year period and we considered as a criterion of reliability the number of Web-sites cited again. We found some interesting results that are reported throughout the text. Our findings point out an extreme dynamicity of the information on the Web and, for this reason, we advice a great caution when someone want to use search and meta-search engines as a tool for searching and retrieve reliable biomedical information. On the other hand, some search and meta-search engines could be very useful as a first step searching for defining better a search and, moreover, for finding institutional Web-sites too. This paper allows to know a more conscious approach to the internet biomedical information universe. PMID:15032337

Corrao, Salvatore; Leone, Francesco; Arnone, Sabrina

2004-01-01

310

Constrained maximal power in small engines.  

PubMed

Efficiency at maximum power is studied for two simple engines (three- and five-state systems). This quantity is found to be sensitive to the variable with respect to which the maximization is implemented. It can be wildly different from the well-known Curzon-Ahlborn bound (one minus the square root of the temperature ratio), or can be even closer than previously realized. It is shown that when the power is optimized with respect to a maximum number of variables the Curzon-Ahlborn bound is a lower bound, accurate at high temperatures, but a rather poor estimate when the cold reservoir temperature approaches zero (at which point the Carnot limit is achieved). PMID:21230439

Gaveau, B; Moreau, M; Schulman, L S

2010-11-05

311

Random Search versus Genetic Programming as Engines for Collective Adaptation  

Microsoft Academic Search

We have integrated the distributed search of genetic programming (GP) based systems with collective memory to form a collective adaptation search method. Such a system significantly improves search as problem complexity is increased. Since the pure GP approach does not scale well with problem complexity, a natural question is which of the two components is actually contributing to the search

Thomas Haynes

1998-01-01

312

Evaluating Search Engine Relevance with Click-Based Metrics  

NASA Astrophysics Data System (ADS)

Automatically judging the quality of retrieval functions based on observable user behavior holds promise for making retrieval evaluation faster, cheaper, and more user centered. However, the relationship between observable user behavior and retrieval quality is not yet fully understood. In this chapter, we expand upon, Radlinski et al. (How does clickthrough data reflect retrieval quality, In Proceedings of the ACM Conference on Information and Knowledge Management (CIKM), 43-52, 2008), presenting a sequence of studies investigating this relationship for an operational search engine on the arXiv.org e-print archive. We find that none of the eight absolute usage metrics we explore (including the number of clicks observed, the frequency with which users reformulate their queries, and how often result sets are abandoned) reliably reflect retrieval quality for the sample sizes we consider. However, we find that paired experiment designs adapted from sensory analysis produce accurate and reliable statements about the relative quality of two retrieval functions. In particular, we investigate two paired comparison tests that analyze clickthrough data from an interleaved presentation of ranking pairs, and find that both give accurate and consistent results. We conclude that both paired comparison tests give substantially more accurate and sensitive evaluation results than the absolute usage metrics in our domain.

Radlinski, Filip; Kurup, Madhu; Joachims, Thorsten

313

GOseek: A gene ontology search engine using enhanced keywords.  

PubMed

We propose in this paper a biological search engine called GOseek, which overcomes the limitation of current gene similarity tools. Given a set of genes, GOseek returns the most significant genes that are semantically related to the given genes. These returned genes are usually annotated to one of the Lowest Common Ancestors (LCA) of the Gene Ontology (GO) terms annotating the given genes. Most genes have several annotation GO terms. Therefore, there may be more than one LCA for the GO terms annotating the given genes. The LCA annotating the genes that are most semantically related to the given gene is the one that receives the most aggregate semantic contribution from the GO terms annotating the given genes. To identify this LCA, GOseek quantifies the contribution of the GO terms annotating the given genes to the semantics of their LCAs. That is, it encodes the semantic contribution into a numeric format. GOseek uses microarray experiment data to rank result genes based on their significance. We evaluated GOseek experimentally and compared it with a comparable gene prediction tool. Results showed marked improvement over the tool. PMID:24109984

Taha, Kamal

2013-07-01

314

Semantic similarity measure in biomedical domain leverage web search engine.  

PubMed

Semantic similarity measure plays an essential role in Information Retrieval and Natural Language Processing. In this paper we propose a page-count-based semantic similarity measure and apply it in biomedical domains. Previous researches in semantic web related applications have deployed various semantic similarity measures. Despite the usefulness of the measurements in those applications, measuring semantic similarity between two terms remains a challenge task. The proposed method exploits page counts returned by the Web Search Engine. We define various similarity scores for two given terms P and Q, using the page counts for querying P, Q and P AND Q. Moreover, we propose a novel approach to compute semantic similarity using lexico-syntactic patterns with page counts. These different similarity scores are integrated adapting support vector machines, to leverage the robustness of semantic similarity measures. Experimental results on two datasets achieve correlation coefficients of 0.798 on the dataset provided by A. Hliaoutakis, 0.705 on the dataset provide by T. Pedersen with physician scores and 0.496 on the dataset provided by T. Pedersen et al. with expert scores. PMID:21095765

Chen, Chi-Huang; Hsieh, Sheau-Ling; Weng, Yung-Ching; Chang, Wen-Yung; Lai, Feipei

2010-01-01

315

Social network analysis based on WWW search engine  

NASA Astrophysics Data System (ADS)

Recently, massive digital records have made it possible to analyze a huge amount of data in social sciences, one of which is social network theory. We investigate social networks between people by extracting information on the World Wide Web. Using famous search engines such as Google, we construct weighted social networks where the nodes are the names of people and the weight of each link is assigned as the number of web pages including both of the names attached to the link. The weight distribution is found to be quite broad with the heavy-tail. The strength of a node, defined as the sum of weights over the node, is strongly correlated with the number of web pages including the single node. We compare networks constructed by this method with real networks to test the reliability of the method. Furthermore, we suggest the quantity, called the effective degree, characterizing the homogeneity (or heterogeneity) of weight distribution for each node in the weighted network. Another way to quantify the importance of each node, based on the effective degree, is also introduced.

Lee, Sang Hoon; Kim, Pan-Jun; Ahn, Yong-Yeol; Jeong, Hawoong

2007-03-01

316

FACTA: a text search engine for finding associated biomedical concepts  

PubMed Central

Summary: FACTA is a text search engine for MEDLINE abstracts, which is designed particularly to help users browse biomedical concepts (e.g. genes/proteins, diseases, enzymes and chemical compounds) appearing in the documents retrieved by the query. The concepts are presented to the user in a tabular format and ranked based on the co-occurrence statistics. Unlike existing systems that provide similar functionality, FACTA pre-indexes not only the words but also the concepts mentioned in the documents, which enables the user to issue a flexible query (e.g. free keywords or Boolean combinations of keywords/concepts) and receive the results immediately even when the number of the documents that match the query is very large. The user can also view snippets from MEDLINE to get textual evidence of associations between the query terms and the concepts. The concept IDs and their names/synonyms for building the indexes were collected from several biomedical databases and thesauri, such as UniProt, BioThesaurus, UMLS, KEGG and DrugBank. Availability: The system is available at http://www.nactem.ac.uk/software/facta/ Contact: yoshimasa.tsuruoka@manchester.ac.uk

Tsuruoka, Yoshimasa; Tsujii, Jun'ichi; Ananiadou, Sophia

2008-01-01

317

Paraphrasing invariance coefficient: measuring para-query invariance of search engines  

Microsoft Academic Search

Paraphrasing is the restatement (or reuse) of text which preserves its meaning in another form. A para-query is a para-phrase of a search query. Humans easily recognize para-queries, but search engines are still far away from it. We claim that in order for a search engine to be called semantic it is necessary that it recognizes para-queries by returning the

Tomasz Imielinski; Jinyun Yan; Yihan Fang; Kurt Eldridge; Huiwen Yu; Peter Kelly

2010-01-01

318

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

Microsoft Academic Search

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

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

2004-01-01

319

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

Code of Federal Regulations, 2013 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...

2013-01-01

320

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

Code of Federal Regulations, 2013 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...

2013-01-01

321

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

Watters, Carolyn; Amoudi, Ghada

2003-01-01

322

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…

Hennesy, Cody; Bowman, John

2008-01-01

323

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.

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

2012-01-01

324

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

Microsoft Academic Search

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

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

2004-01-01

325

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.

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

2012-01-01

326

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

327

Lessons learned from building the iMED intelligent medical search engine.  

PubMed

Searching for medical information on the Web has become highly popular, but it remains a challenging task because searchers are often uncertain about their exact medical situations and unfamiliar with medical terminology. To address this challenge, we have built an intelligent medical Web search engine called iMed. iMed introduces and extends expert system technology into the search engine domain. It uses medical knowledge and an interactive questionnaire to help searchers form queries. This paper reports the lessons we learned from building the iMed system. We believe that many of these lessons can be applied to other medical search engines as well. We systematically discuss important issues in the new field consumer-centric intelligent medical search, including input interface, output interface, search system, medical knowledge base, help system, and testing. PMID:19965039

Luo, Gang

2009-01-01

328

Quality of healthcare websites: A comparison of a general-purpose vs. domain-specific search engine.  

PubMed

In a pilot study, we had five typical Internet users evaluate the quality of health websites returned by a general-purpose search engine (Google) and a healthcare-specific search engine (Healthfinder). The evaluators used a quality criteria developed by Mitretek/Health Information Technology Institute. Although both search engines provided high quality health websites, we found some important differences between the two types of search engines. PMID:18693960

Abraham, Joanna; Reddy, Madhu

2007-10-11

329

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

Code of Federal Regulations, 2013 CFR

...AND VESSELS Emission Standards and Related Requirements...on the nominal power curve for the engine configuration...range of the actual power curves of production engines...that your nominal power curve does not represent production...appropriate emission standard under §...

2013-07-01

330

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

NASA Astrophysics Data System (ADS)

In this paper I highlight two implications of the widespread use of search engines, which are often overlooked by commentators. In the first part of the paper I argue that search engines are conducive to unplanned exposures to diverse and even opposing views. In the second part I argue that search engines indirectly contribute to emergent political organization, since they allow large numbers of people to locate and access organizational hubs of collective action. I conclude by pointing to the democratic significance of these properties.

Lev-On, A.

331

Students grasp complex concepts through animation [power engineering education  

Microsoft Academic Search

This paper presents examples which show how computer animation may be used in teaching electrical power engineering subjects. The topics covered include: transmission system transients; power transformer saturation; and electric machine operation

J. Hess; C. Richard; H. Brown; D. Smith; Boyu Hou; Yilu Liu; Wilson Xu

1998-01-01

332

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

333

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

334

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

335

40 CFR 1042.140 - Maximum engine power, displacement, and power density.  

Code of Federal Regulations, 2010 CFR

...displacement, and power density. This section describes...displacement, and power density of an engine for the purposes...e) Throughout this part, references to a specific power value...an engine family's power density in kW/L by dividing the...

2009-07-01

336

Children's Use of the Yahooligans! Web Search Engine. III. Cognitive and Physical Behaviors on Fully Self-Generated Search Tasks.  

ERIC Educational Resources Information Center

|Presents the third part of a research project that investigated information-seeking behavior and success of seventh-grade science children in using the Yahooligans! Web search engine/directory. Children were more successful on a fully self-generated task than one two fully assigned tasks and were more successful when they browsed than when they…

Bilal, Dania

2002-01-01

337

With Power Comes Responsibility: Motorcycle Engine Power and Power-to-Weight Ratio in Relation to Accident Risk  

Microsoft Academic Search

Objective: Current European legislation allows the EU member states to restrict the maximum power output of motorcycles to 74 kW even though evidence supporting the limit is scarce and has produced mixed results—perhaps because motorcycle performance has been measured by engine displacement, not engine power, in most of the previous studies. This study investigates the relationship of motorcycle engine power

Markus Mattsson; Heikki Summala

2010-01-01

338

An Interactive Computer Graphics Package for Electric Power Engineering Education  

Microsoft Academic Search

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

S. J. Salon

1983-01-01

339

Reverse Engineering Java Card Applets Using Power Analysis  

Microsoft Academic Search

Power analysis on smart cards is widely used to obtain infor- mation about implemented cryptographic algorithms. We propose sim- ilar methodology for Java Card applets reverse engineering. Because power analysis alone does not provide enough information, we refine our methodology by involving additional information sources. Issues like distinguishing between bytecodes performing similar tasks and reverse engineering of conditional branches and

Dennis Vermoen; Marc F. Witteman; Georgi Gaydadjiev

2007-01-01

340

The History of the Internet Search Engine: Navigational Media and the Traffic Commodity  

NASA Astrophysics Data System (ADS)

This chapter traces the economic development of the search engine industry over time, beginning with the earliest Web search engines and ending with the domination of the market by Google, Yahoo! and MSN. Specifically, it focuses on the ways in which search engines are similar to and different from traditional media institutions, and how the relations between traditional and Internet media have changed over time. In addition to its historical overview, a core contribution of this chapter is the analysis of the industry using a media value chain based on audiences rather than on content, and the development of traffic as the core unit of exchange. It shows that traditional media companies failed when they attempted to create vertically integrated portals in the late 1990s, based on the idea of controlling Internet content, while search engines succeeded in creating huge "virtually integrated" networks based on control of Internet traffic rather than Internet content.

van Couvering, E.

341

A Study on University Network Public Opinion Monitoring Based on Intelligent Meta-Search Engine  

Microsoft Academic Search

The paper integrated agent technology with meta-search engine around university network public opinion monitoring, analyzed and designed its system framework with a view to achieve an intelligent and efficient information retrieval of monitoring of university network public opinion.

Wang Zhan-ping; Yang De-tao; Liu Meng-yang

2009-01-01

342

Prototype Rhenium Component for Stirling Engine Power Conversion  

Microsoft Academic Search

The Stirling engine power conversion concept is a candidate to provide electrical power for deep space missions. A key element for qualifying potential flight hardware is the long-term durability assessment for critical hot section components of the power converter. One such critical component is the power converter heater head, which is a high-temperature pressure vessel that transfers heat to the

Todd Leonhardt; Frank Ritzert

2005-01-01

343

A Service Search Engine for the Industrial Digital Ecosystems  

Microsoft Academic Search

Digital ecosystem (DE) is comprised of heterogeneous and distributed species which can play the dual role of service provider and service requester. Nowadays, DE lacks semantic search support, which means it cannot provide a reliable and trustworthy link between service providers and service requesters. To solve this issue, we design a conceptual framework of a service- ontology-based semantic service search

Hai Dong; Farookh Khadeer Hussain; Elizabeth Chang

2011-01-01

344

When Every Search Engine Knows Your Name. Online Treasures  

ERIC Educational Resources Information Center

|This article explores personalized search technologies showing that various vendors are trying a variety of approaches. Brief descriptions are given of some of beta projects in effort to assist librarians seeking to offer services that meet their patrons' individual needs by exploring how personal search technologies are being used on the Web in…

Balas, Janet L.

2005-01-01

345

Finding What You Need: Using Internet Search Engines.  

ERIC Educational Resources Information Center

|Simply typing in a word or two will not "automagically" produce good results on the Internet. Choosing the shortage of school administrators as a topic, this article outlines search techniques (including Boolean logic), reveals major Web sites' reactions to those techniques, and outlines tricks for improving search results. (MLH)|

Hall, Marc Elliot

2000-01-01

346

Automotive engineering. (Latest citations from the NTIS database). Published Search  

SciTech Connect

The bibliography contains citations concerning various aspects of engineering as related to foreign and domestic automobiles. Topics include design, suspension systems, bodies, exhaust components, transmissions, chassis, collision research, human factors engineering, and fuel economy. (Contains a minimum of 198 citations and includes a subject term index and title list.)

Not Available

1993-06-01

347

Requirements engineering: In search of the dependent variables  

Microsoft Academic Search

Abstract When software development teams modify their requirements engineering process as an independent variable, they often examine the implications of these process changes by assessing the quality of the products of the requirements engineering process, e.g., a software requirements specification (SRS). Using the quality of the SRS as the dependent variable is flawed. As an alternative, this paper presents a

Tony Gorschek; Alan M. Davis

2008-01-01

348

Search Engines as Substitutes for Traditional Information Sources? An Investigation of Media Choice  

Microsoft Academic Search

We develop a two-phased survey design—based on the uses and gratifications approach and the theory of planned behavior—to analyze competitive relations between search engines and traditional information sources. We apply the survey design in a large-scale empirical study with 14-to 66-year-old Internet users (mean age 32) to find out whether complementary or substitutional dependencies predominate between search engines and three

Natalie Kink; Thomas Hess

2008-01-01

349

Roman engineering [overhead power line history  

Microsoft Academic Search

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

B. Bowers

2003-01-01

350

Applicability of advanced automotive heat engines to solar thermal power  

NASA Astrophysics Data System (ADS)

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.

351

Impact of internet search engines on OPAC users: a study of Punjabi University, Patiala (India)  

Microsoft Academic Search

Purpose – The aim of this paper is to study the impact of internet search engine usage with special reference to OPAC searches in the Punjabi University Library, Patiala, Punjab (India). Design\\/methodology\\/approach – The primary data were collected from 352 users comprising faculty, research scholars and postgraduate students of the university. A questionnaire was designed as the data collection tool

Shiv Kumar

2012-01-01

352

'Sciencenet'--towards a global search and share engine for all scientific knowledge  

PubMed Central

Summary: Modern biological experiments create vast amounts of data which are geographically distributed. These datasets consist of petabytes of raw data and billions of documents. Yet to the best of our knowledge, a search engine technology that searches and cross-links all different data types in life sciences does not exist. We have developed a prototype distributed scientific search engine technology, ‘Sciencenet’, which facilitates rapid searching over this large data space. By ‘bringing the search engine to the data’, we do not require server farms. This platform also allows users to contribute to the search index and publish their large-scale data to support e-Science. Furthermore, a community-driven method guarantees that only scientific content is crawled and presented. Our peer-to-peer approach is sufficiently scalable for the science web without performance or capacity tradeoff. Availability and Implementation: The free to use search portal web page and the downloadable client are accessible at: http://sciencenet.kit.edu. The web portal for index administration is implemented in ASP.NET, the ‘AskMe’ experiment publisher is written in Python 2.7, and the backend ‘YaCy’ search engine is based on Java 1.6. Contact: urban.liebel@kit.edu Supplementary Material: Detailed instructions and descriptions can be found on the project homepage: http://sciencenet.kit.edu.

Lutjohann, Dominic S.; Shah, Asmi H.; Christen, Michael P.; Richter, Florian; Knese, Karsten; Liebel, Urban

2011-01-01

353

Inefficiency and Bias of Search Engines in Retrieving References Containing Scientific Names of Fossil Amphibians  

ERIC Educational Resources Information Center

|Retrieval efficiencies of paper-based references in journals and other serials containing 10 scientific names of fossil amphibians were determined for seven major search engines. Retrievals were compared to the number of references obtained covering the period 1895-2006 by a Comprehensive Search. The latter was primarily a traditional…

Brown, Lauren E.; Dubois, Alain; Shepard, Donald B.

2008-01-01

354

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

Microsoft Academic Search

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

Wu Chensheng; Liu Yanjun; Zhang Luji; Hou Wei

2009-01-01

355

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

Microsoft Academic Search

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

Wang Fang; Mo Qian

2009-01-01

356

The SphereSearch Engine for Unified Ranked Retrieval of Heterogeneous XML and Web Documents  

Microsoft Academic Search

This paper presents the novel SphereSearch Engine that provides unified ranked retrieval on heterogeneous XML and Web data. Its search capabilities include vague structure conditions, text content conditions, and relevance ranking based on IR statistics and statistically quantified ontological relationships. Web pages in HTML or PDF are automatically converted into XML format, with the option of generating semantic tags by

Jens Graupmann; Ralf Schenkel; Gerhard Weikum

2005-01-01

357

Impact of Internet Search Engines on OPAC Users: A Study of Punjabi University, Patiala (India)  

ERIC Educational Resources Information Center

|Purpose: The aim of this paper is to study the impact of internet search engine usage with special reference to OPAC searches in the Punjabi University Library, Patiala, Punjab (India). Design/methodology/approach: The primary data were collected from 352 users comprising faculty, research scholars and postgraduate students of the university. A…

Kumar, Shiv

2012-01-01

358

OOV Translation Mining from Mixed-Language Snippets from a Search Engine  

Microsoft Academic Search

In this paper, we describe an approach to OOV translation mining based on web search. Without comparable corpus or parallel corpus, we first expand the Chinese OOV phrase with English segments by a C-E dictionary. Then the OOV and the expansion will be submitted to the web search engine. From the snippets we can mine the translation of the OOV.

Yun-qian Qu; Jian-min Yao; Jun Sun; Meng Sun

2008-01-01

359

StarTracker: An Integrated, Web-based Clinical Search Engine  

PubMed Central

This poster details the design and use of the StarTracker clinical search engine. This program is fully integrated within our electronic medical record system and allows users to enter simple rules that direct formatted searches of multiple legacy databases.

Gregg, William; Jirjis, Jim; Lorenzi, Nancy M.; Giuse, Dario

2003-01-01

360

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

361

WebSeer: A n Image Search Engine for the World Wide Web  

Microsoft Academic Search

Because of the size of the World Wide Web and its inherentlack of structure, finding what one is looking for can bea challenge. In fact, some of the most highly visited Websites are search engines. However, while Web pages typicallycontain both text and images, most currently availablesearch engines only index text. This paper describesWebSeer, a system for locating images on

J. Swain

1997-01-01

362

Ask, don't search: A social help engine for online social network mobile users  

Microsoft Academic Search

In this paper, we present the architectural details of Odin Help Engine, a novel social search engine that leverages online social networks and sensing data from mobile devices to find targeted answers for subjective queries and recommendation requests. In Odin, users' queries are routed to those connections in their social network who (i) are most likely to help answer the

Tam Vu; Akash Baid

2012-01-01

363

Applicability of advanced automotive heat engines to solar thermal power  

Microsoft Academic Search

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

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

1981-01-01

364

User Specific Training of a Music Search Engine  

Microsoft Academic Search

Query-by-Humming (QBH) systems transcribe a sung or hummed query and search for related musical themes in a database, returning\\u000a the most similar themes as a play list. A major obstacle to effective QBH is variation between user queries and the melodic\\u000a targets used as database search keys. Since it is not possible to predict all individual singer profiles before system

David Little; David Raffensperger; Bryan Pardo

2007-01-01

365

The MediaMill TRECVID 2010 semantic video search engine  

Microsoft Academic Search

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

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

2011-01-01

366

Improved search engines and navigation preference in personal information management  

Microsoft Academic Search

Traditionally users access their personal files mainly by usingfolder navigation. We evaluate whether recent improvements indesktop search have changed this fundamental aspect of PersonalInformation Management (PIM). We tested this in two studies usingthe same questionnaire: (a) The Windows Studya longitudinalcomparison of Google Desktop and Windows XP SearchCompanion, and (b) The Mac Studya large scale comparison of MacSpotlight and Sherlock. There

Ofer Bergman; Ruth Beyth-marom; Rafi Nachmias; Noa Gradovitch; Steve Whittaker

2008-01-01

367

Indri: A language-model based search engine for complex queries1  

Microsoft Academic Search

Search and detection technology has been a focus of DARPA and ARDA research programs since the TIPSTER program began in the early 1990s (Harman 1992). A num-ber of innovations have been developed in this research, resulting in very significant improvements in the effective-ness of search tools. The Inquery search engine (Callan et al. 1995), developed at the University of Massachusetts

Trevor Strohman; Donald Metzler; Howard Turtle; W. Bruce Croft

2005-01-01

368

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

NASA Astrophysics Data System (ADS)

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

Hess, A.

369

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

SciTech Connect

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

NONE

1995-02-01

370

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

SciTech Connect

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

NONE

1996-05-01

371

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

SciTech Connect

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

Not Available

1994-04-01

372

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

373

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

374

Essie: a concept-based search engine for structured biomedical text.  

PubMed

This article describes the algorithms implemented in the Essie search engine that is currently serving several Web sites at the National Library of Medicine. Essie is a phrase-based search engine with term and concept query expansion and probabilistic relevancy ranking. Essie's design is motivated by an observation that query terms are often conceptually related to terms in a document, without actually occurring in the document text. Essie's performance was evaluated using data and standard evaluation methods from the 2003 and 2006 Text REtrieval Conference (TREC) Genomics track. Essie was the best-performing search engine in the 2003 TREC Genomics track and achieved results comparable to those of the highest-ranking systems on the 2006 TREC Genomics track task. Essie shows that a judicious combination of exploiting document structure, phrase searching, and concept based query expansion is a useful approach for information retrieval in the biomedical domain. PMID:17329729

Ide, Nicholas C; Loane, Russell F; Demner-Fushman, Dina

2007-02-28

375

Essie: A Concept-based Search Engine for Structured Biomedical Text  

PubMed Central

This article describes the algorithms implemented in the Essie search engine that is currently serving several Web sites at the National Library of Medicine. Essie is a phrase-based search engine with term and concept query expansion and probabilistic relevancy ranking. Essie’s design is motivated by an observation that query terms are often conceptually related to terms in a document, without actually occurring in the document text. Essie’s performance was evaluated using data and standard evaluation methods from the 2003 and 2006 Text REtrieval Conference (TREC) Genomics track. Essie was the best-performing search engine in the 2003 TREC Genomics track and achieved results comparable to those of the highest-ranking systems on the 2006 TREC Genomics track task. Essie shows that a judicious combination of exploiting document structure, phrase searching, and concept based query expansion is a useful approach for information retrieval in the biomedical domain.

Ide, Nicholas C.; Loane, Russell F.; Demner-Fushman, Dina

2007-01-01

376

A reliability measure of protein-protein interactions and a reliability measure-based search engine.  

PubMed

Many methods developed for estimating the reliability of protein-protein interactions are based on the topology of protein-protein interaction networks. This paper describes a new reliability measure for protein-protein interactions, which does not rely on the topology of protein interaction networks, but expresses biological information on functional roles, sub-cellular localisations and protein classes as a scoring schema. The new measure is useful for filtering many spurious interactions, as well as for estimating the reliability of protein interaction data. In particular, the reliability measure can be used to search protein-protein interactions with the desired reliability in databases. The reliability-based search engine is available at http://yeast.hpid.org. We believe this is the first search engine for interacting proteins, which is made available to public. The search engine and the reliability measure of protein interactions should provide useful information for determining proteins to focus on. PMID:19657800

Park, Byungkyu; Han, Kyungsook

2010-02-01

377

Protein segment finder: an online search engine for segment motifs in the PDB  

PubMed Central

Finding related conformations in the Protein Data Bank (PDB) is essential in many areas of bioscience. To assist this task, we designed a search engine that uses a compact database to quickly identify protein segments obeying a set of primary, secondary and tertiary structure constraints. The database contains information such as amino acid sequence, secondary structure, disulfide bonds, hydrogen bonds and atoms in contact as calculated from all protein structures in the PDB. The search engine parses the database and returns hits that match the queried parameters. The conformation search engine, which is notable for its high speed and interactive feedback, is expected to assist scientists in discovering conformation homologs and predicting protein structure. The engine is publicly available at http://ari.stanford.edu/psf and it will also be used in-house in an automatic mode aimed at discovering new protein motifs.

Samson, Abraham O.; Levitt, Michael

2009-01-01

378

Protein segment finder: an online search engine for segment motifs in the PDB.  

PubMed

Finding related conformations in the Protein Data Bank (PDB) is essential in many areas of bioscience. To assist this task, we designed a search engine that uses a compact database to quickly identify protein segments obeying a set of primary, secondary and tertiary structure constraints. The database contains information such as amino acid sequence, secondary structure, disulfide bonds, hydrogen bonds and atoms in contact as calculated from all protein structures in the PDB. The search engine parses the database and returns hits that match the queried parameters. The conformation search engine, which is notable for its high speed and interactive feedback, is expected to assist scientists in discovering conformation homologs and predicting protein structure. The engine is publicly available at http://ari.stanford.edu/psf and it will also be used in-house in an automatic mode aimed at discovering new protein motifs. PMID:18974183

Samson, Abraham O; Levitt, Michael

2008-10-30

379

Dynamic Power Spectra: Searching for Compact Binary Pulsars  

NASA Astrophysics Data System (ADS)

Some of the most scientifically useful pulsars are those in compact binary orbits (Porb < 4-5 hours), which are often found in the dense stellar environments of globular clusters. Unfortunately, strong Doppler accelerations make finding these pulsars very difficult. One of the more promising techniques to find these objects utilizes Dynamic Power Spectra (DPS), which are sensitive to binary pulsars when the observation length is comparable to the orbital period. A DPS consists of Fourier powers spanning across a large data plane of Fourier frequency and time. A pulsar appears in the DPS as a curve tracing out the Doppler shifted spin frequency as a function of observation time across the plane. We have improved the method by which we create DPS by including a new harmonic summing routine and a constant frequency derivative acceleration search with interbinning in each DPS segment. We have developed a beta version of a DPS search algorithm that is tuned to find pulsars when the orbital period is approximately equal to the observation duration. We have many terabytes of globular cluster data from the Green Bank Telescope which likely contain unknown compact pulsar binaries, many of which are thought to be sought-after millisecond pulsars. A thorough search of this data in ongoing and if new pulsars are found we will then determine "instant" timing solutions using the archival data. Funding for this presentation is made possible by the NSF REU Program, AUI, the NRAO, and Columbia University.

Pennucci, Tim

2009-01-01

380

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

381

40 CFR 1051.140 - What is my vehicle's maximum engine power and displacement?  

Code of Federal Regulations, 2013 CFR

...ENGINES AND VEHICLES Emission Standards and Related Requirements ...power point on the nominal power curve for the engine configuration...kilowatts. The nominal power curve of an engine configuration...also be expressed by a torque curve that relates maximum...

2013-07-01

382

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

Code of Federal Regulations, 2013 CFR

... 2013-01-01 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...

2013-01-01

383

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

Code of Federal Regulations, 2013 CFR

... 2013-01-01 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...

2013-01-01

384

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

Code of Federal Regulations, 2013 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...

2013-01-01

385

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

Code of Federal Regulations, 2013 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...

2013-01-01

386

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

Code of Federal Regulations, 2013 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...

2013-01-01

387

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

Code of Federal Regulations, 2013 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...

2013-01-01

388

Complex dynamics of our economic life on different scales: insights from search engine query data.  

PubMed

Search engine query data deliver insight into the behaviour of individuals who are the smallest possible scale of our economic life. Individuals are submitting several hundred million search engine queries around the world each day. We study weekly search volume data for various search terms from 2004 to 2010 that are offered by the search engine Google for scientific use, providing information about our economic life on an aggregated collective level. We ask the question whether there is a link between search volume data and financial market fluctuations on a weekly time scale. Both collective 'swarm intelligence' of Internet users and the group of financial market participants can be regarded as a complex system of many interacting subunits that react quickly to external changes. We find clear evidence that weekly transaction volumes of S&P 500 companies are correlated with weekly search volume of corresponding company names. Furthermore, we apply a recently introduced method for quantifying complex correlations in time series with which we find a clear tendency that search volume time series and transaction volume time series show recurring patterns. PMID:21078644

Preis, Tobias; Reith, Daniel; Stanley, H Eugene

2010-12-28

389

A Virtual Engineering Framework for Simulating Advanced Power System  

Microsoft Academic Search

In this report is described the work effort performed to provide NETL with VE-Suite based Virtual Engineering software and enhanced equipment models to support NETL's Advanced Process Engineering Co-simulation (APECS) framework for advanced power generation systems. Enhancements to the software framework facilitated an important link between APECS and the virtual engineering capabilities provided by VE-Suite (e.g., equipment and process visualization,

Mike Bockelie; Dave Swensen; Martin Denison; Stanislav Borodai

2008-01-01

390

Single-ion heat engine at maximum power.  

PubMed

We propose an experimental scheme to realize a nanoheat engine with a single ion. An Otto cycle may be implemented by confining the ion in a linear Paul trap with tapered geometry and coupling it to engineered laser reservoirs. The quantum efficiency at maximum power is analytically determined in various regimes. Moreover, Monte Carlo simulations of the engine are performed that demonstrate its feasibility and its ability to operate at a maximum efficiency of 30% under realistic conditions. PMID:23215485

Abah, O; Rossnagel, J; Jacob, G; Deffner, S; Schmidt-Kaler, F; Singer, K; Lutz, E

2012-11-14

391

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

Code of Federal Regulations, 2013 CFR

...AND VESSELS Emission Standards and Related Requirements...on the nominal power curve for the engine configuration...either your nominal power curve or your intended swept...for the nominal power curve as specified in 40 CFR...calculating the NOX standard in § 1042.104...

2013-07-01

392

Conceptual Design of Single Turbofan Engine Powered Light Aircraft.  

National Technical Information Service (NTIS)

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...

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

1977-01-01

393

Computer-Aided Engineering for Power-System Planning.  

National Technical Information Service (NTIS)

A computer-aided engineering (CAE) system has been developed to assist planning, design, and analysis of entire power-plant systems from the generator to the substations, as well as determining operation and maintenance procedures for the completed system...

T. Tsuji S. Watanabe K. Ikeda A. Maeda

1985-01-01

394

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

395

Utilization of coal powering a gas turbine engine  

Microsoft Academic Search

An apparatus 10 for consuming coal in powering a gas turbine engine 12 is disclosed. The apparatus includes an auxiliary combustor 16 and a partial gasifier 18. The gasifier 18 produces combustible char and combustible fluids. The combustible fluids are burned in the gas turbine engine. The combustible char is burned in the auxiliary combustor to form high temperature gases.

1983-01-01

396

Cryogenic Engineering for Superconducting Power Transmission Systems.  

National Technical Information Service (NTIS)

The successful introduction of helium-cooled (superconducting) transmission systems into electric utility networks will open a vast market for cryogenic engineering components and services. If only 10 percent of the anticipated investment in transmission ...

E. B. Forsyth

1976-01-01

397

ClinicalKey: a point-of-care search engine.  

PubMed

ClinicalKey is a new point-of-care resource for health care professionals. Through controlled vocabulary, ClinicalKey offers a cross section of resources on diseases and procedures, from journals to e-books and practice guidelines to patient education. A sample search was conducted to demonstrate the features of the database, and a comparison with similar tools is presented. PMID:23394422

Vardell, Emily

2013-01-01

398

E-Learning Opportunities for Electric Power Engineers  

Microsoft Academic Search

A manpower shortage is forecasted for qualified electric power engineers as the number of retirees exceeds new hires. This letter discusses the opportunities and challenges of the distant e-learning (e-training) for electric power engineers and presents the progress of two programs established in North America. The experience is augmented by observations from a sampling at other universities. E-learning is suggested

Khaled Nigim; Gerald T. Heydt; Joseph Palais

2007-01-01

399

Broadening the search for minority science and engineering doctoral starts  

NASA Astrophysics Data System (ADS)

This analysis looked at doctorate completion in science and engineering (S&E) by underrepresented minorities: blacks, Hispanics and Indian Americans. These are the groups we must increasingly depend upon to make up for shortfalls in science and engineering doctorate production among American citizens. These shortfalls derive from truncated birth rates among white people, for the most part. The analysis answered several questions officials will need to know the answers to if we are to plan effectively to develop the talents of these individuals. Specifically, the National Science Foundation asked us to look at the feasibility of involving nontraditional minority science and engineering graduates (baccalaureates at 25+) as doctoral starts, along with minority S&E graduates who had taken jobs with corporations to pay off student loans and military personnel involved in S&E study and S&E work (see NSF report of research under grant SED-9107756). We found that nontraditional minority S&E doctorate recipients matched their traditional counterparts in elapsed time to degree and similar indicators. They had less in the way of support for doctoral study, however. We found that minority S&E graduates who took jobs in corporations were keenly interested in returning to campus to complete degrees. We also found that many bright minority youngsters are studying S&E subjects in the Community College of the Air Force and in U.S. Army SOC colleges. Some have enrolled in baccalaureate programs on university campuses and plan to continue on to the PhD. We concluded that money is important in tapping these talent pools to make up for the demographically driven shortfalls discussed above.

Brazziel, William E.; Brazziel, Marian E.

1995-06-01

400

A cross-disciplinary technology transfer for search-based evolutionary computing: from engineering design to software engineering design  

NASA Astrophysics Data System (ADS)

Although object-oriented conceptual software design is difficult to learn and perform, computational tool support for the conceptual software designer is limited. In conceptual engineering design, however, computational tools exploiting interactive evolutionary computation (EC) have shown significant utility. This article investigates the cross-disciplinary technology transfer of search-based EC from engineering design to software engineering design in an attempt to provide support for the conceptual software designer. Firstly, genetic operators inspired by genetic algorithms (GAs) and evolutionary programming are evaluated for their effectiveness against a conceptual software design representation using structural cohesion as an objective fitness function. Building on this evaluation, a multi-objective GA inspired by a non-dominated Pareto sorting approach is investigated for an industrial-scale conceptual design problem. Results obtained reveal a mass of interesting and useful conceptual software design solution variants of equivalent optimality—a typical characteristic of successful multi-objective evolutionary search techniques employed in conceptual engineering design. The mass of software design solution variants produced suggests that transferring search-based technology across disciplines has significant potential to provide computationally intelligent tool support for the conceptual software designer.

Simons, C. L.; Parmee, I. C.

2007-07-01

401

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

PubMed Central

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

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

1998-01-01

402

Vaidurya: a multiple-ontology, concept-based, context-sensitive clinical-guideline search engine.  

PubMed

We designed and implemented a generic search engine (Vaidurya), as part of our Digital clinical-Guideline Library (DeGeL) framework. Two search methods were implemented in addition to full-text search: (1) concept-based search, which relies on pre-indexing the guidelines in a clinically meaningful fashion, and (2) context-sensitive search, which relies on first semi-structuring the guidelines according to a given ontology, then searching for terms within specific labeled text segments. The Vaidurya engine is fully functional and is used within the DeGeL system. We describe the Vaidurya ontological and algorithmic framework; we also briefly summarize the results of a detailed evaluation in the clinical-guideline domain, demonstrating that both concept-based and context-sensitive ontology-independent search are highly feasible and significantly improve on free text search retrieval performance. We conclude by analyzing the limitations and advantages of the approach, and the steps that we have started to take to extend it based on user feedback. PMID:18721900

Moskovitch, Robert; Shahar, Yuval

2008-08-03

403

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

NASA Astrophysics Data System (ADS)

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

Metaxas, Panagiotis Takis

404

Facebook as a social search engine and the implications for libraries in the twenty-first century  

Microsoft Academic Search

Purpose – The primary objectives of this research paper are to explore the concept of social search, evaluate the performance of Facebook as a social search engine, and to understand the relationship between social networking sites (SNS) and social search. The author's intention is to examine the possibility that Facebook presents as the future of on-line search and the implications

2008-01-01

405

Hybridizing the harmony search algorithm with a spreadsheet ‘Solver’ for solving continuous engineering optimization problems  

Microsoft Academic Search

In this article, a hybrid global–local optimization algorithm is proposed to solve continuous engineering optimization problems. In the proposed algorithm, the harmony search (HS) algorithm is used as a global-search method and hybridized with a spreadsheet ‘Solver’ to improve the results of the HS algorithm. With this purpose, the hybrid HS–Solver algorithm has been proposed. In order to test the

M. Tamer Ayvaz; Ali Haydar Kayhan; Huseyin Ceylan; Gurhan Gurarslan

2009-01-01

406

ProThes: thesaurus-based meta-search engine for a specific application domain  

Microsoft Academic Search

In this poster we introduce ProThes, a pilot meta-search engine (MSE) for a specific application domain. ProThes combines three approaches: meta-search, graphical user interface (GUI) for query specification, and thesaurus-based query techniques. ProThes attempts to employ domain-specific knowledge, which is represented by both a conceptual thesaurus and results ranking heuristics. Since the knowledge representation is separated from the MSE core,

Pavel Braslavski; Gleb Alshanski; Anton Shishkin

2004-01-01

407

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

Microsoft Academic Search

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

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

1979-01-01

408

LambdaRank acceleration for relevance ranking in web search engines (abstract only)  

Microsoft Academic Search

This paper describes a FPGA-based hardware acceleration system for LambdaRank algorithm. LambdaRank Algorithm is a Neural Network (NN)-based learning to rank algorithm. It is intensively used by web search engine companies to increase the search relevance. Since i) the cost function for the ranking problem is much more complex than that of traditional Back-Propagation(BP) NNs, and ii) no coarse-grained parallelism

Jing Yan; Ning-Yi Xu; Xiong-Fei Cai; Rui Gao; Yu Wang; Rong Luo; Feng-Hsiung Hsu

2010-01-01

409

An FPGA-based accelerator for LambdaRank in Web search engines  

Microsoft Academic Search

In modern Web search engines, Neural Network (NN)-based learning to rank algorithms is intensively used to increase the quality of search results. LambdaRank is one such algorithm. However, it is hard to be efficiently accelerated by computer clusters or GPUs, because: (i) the cost function for the ranking problem is much more complex than that of traditional Back-Propagation(BP) NNs, and

Jing Yan; Ning-YI Xu; Xiong-FEI Cai; Rui Gao; Yu Wang; Rong Luo; Feng-HSIUNG Hsu

2011-01-01

410

Embedded networked sensors: signal search engine for signal classification  

Microsoft Academic Search

Networked sensors (ENS) provide a distributed monitoring approach for defense systems situational awareness, machine condition based maintenance, health care, transportation, and other applications. The ENS architecture is based on compact, intelligent, networked low-power sensor nodes. Wireless networking enables rapid distribution of sensor nodes in diverse environments. For the general applications considered here, it is energy usage drawn from fixed energy

Sivatharan Natkunanathan; Joseph Pham; William J. Kaiser; Greg Pottie

2004-01-01

411

Nuclear Power Engineering Education Program, University of Illinois  

Microsoft Academic Search

The DOE\\/CECo Nuclear Power Engineering Education Program at the University of Illinois in its first year has significantly impacted the quality of the power education which our students receive. It has contributed to: the recently completed upgrade of the console of our Advanced TRIGA reactor which increases the reactor's utility for training, the procurement of new equipment to upgrade and

1993-01-01

412

Low temperature differential stirling engine based power generation  

Microsoft Academic Search

Research into various forms of sustainable power generation is required to address the rising problems associated with fossil fuel limitations. A new research programme aims to show that electric power generation using low-grade heat and Stirling engine technology can be made commercially viable. Using the Modified Beale Number, and preliminary software modelling, an initial prototype has been designed. This prototype

Paul T. Gaynor; Russell Y. Webb; Caleb C. Lloyd

2008-01-01

413

Application of virtual instrumentation in a power engineering laboratory  

Microsoft Academic Search

This paper presents a few of the OSU-Stillwater Power Engineering Laboratory capabilities. Digital signal acquisition and virtual instrumentation (National Instruments' LABVIEW software) are used to help students understand the concepts by visualizing the data. Some features of virtual instrumentation are real-time display of waveforms, phasor diagrams, real and reactive power, spectral analysis as well as the ability to interpret the

Qamar H. Arsalan; Amanda Filbeck; Thomas W. Gedra

2002-01-01

414

Low-power nuclear engineering for heat production  

NASA Astrophysics Data System (ADS)

The paper shows the expediency and importance of the development of low-power nuclear engineering as well as feasibility indices of an up-to-date nuclear power plant intended for regional energy production. A high reliability of the vessel-type boiling reactor with a natural coolant circulation is shown under various operating conditions of a nuclear heat production plant.

Kursky, A. S.; Kalygin, V. V.; Semidotsky, I. I.

2012-05-01

415

The electrical power distribution system for the nonelectrical engineer  

Microsoft Academic Search

An attempt is made to introduce to the nonelectrical engineer the basic components and terminologies associated with a power distribution system and to present the needs such a system requires to remain safe and reliable. Particular reference is made to the power distribution system of a cement plant

Robert A. Haas; M. J. Klova

1991-01-01

416

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

Code of Federal Regulations, 2010 CFR

...false Large transport category airplanes: Turbine engine powered: En route...PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations...381 Large transport category airplanes: Turbine engine powered: En...

2009-01-01

417

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

Code of Federal Regulations, 2010 CFR

...false Large transport category airplanes: Turbine engine powered: En route...PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations...381 Large transport category airplanes: Turbine engine powered: En...

2010-01-01

418

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

419

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

NASA Astrophysics Data System (ADS)

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

Kotamraju, Vinay; Rabus, Bernhard; Busler, Jennifer

2012-05-01

420

Efficiency at maximum power of thermally coupled heat engines  

NASA Astrophysics Data System (ADS)

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.

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

2012-04-01

421

Power recovery from turbine and gas engine exhausts  

SciTech Connect

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

Lawson, G.L.

1985-02-01

422

Start Your Search Engines. Part One: Taming Google--and Other Tips to Master Web Searches  

ERIC Educational Resources Information Center

|There are a lot of useful tools on the Web, all those social applications, and the like. Still most people go online for one thing--to perform a basic search. For most fact-finding missions, the Web is there. But--as media specialists well know--the sheer wealth of online information can hamper efforts to focus on a few reliable references.…

Adam, Anna; Mowers, Helen

2008-01-01

423

61 FR 65157 - Reactor Site Criteria Including Seismic and Earthquake Engineering Criteria for Nuclear Power Plants  

Federal Register 2010, 2011, 2012, 2013

...Criteria Including Seismic and Earthquake Engineering Criteria for Nuclear Power Plants AGENCY...geologic, seismic, and earthquake engineering considerations for future nuclear power...in the earth sciences and earthquake engineering. This rule primarily consists of...

1996-12-11

424

59 FR- Reactor Site Criteria Including Seismic and Earthquake Engineering Criteria for Nuclear Power...  

Federal Register 2010, 2011, 2012, 2013

...Criteria Including Seismic and Earthquake Engineering Criteria for Nuclear Power Plants and...geologic, seismic, and earthquake engineering considerations for future nuclear power...in the earth sciences and earthquake engineering. In addition, this proposed rule...

1994-10-17

425

Development of geothermal power engineering technologies in Russia  

Microsoft Academic Search

The present state of geothermal power engineering in Russia and prospects for its development are considered. An assessment\\u000a is given of the projects of constructing a pilot binary geothermal power plant in Kamchatka, developing geothermal heat supply\\u000a systems in the town of Vilyuchinsk and settlement of Rozovyi, and increasing the installed capacity of the Mutnovsk geothermal\\u000a power station, which are

G. V. Tomarov; A. I. Nikol’skii; V. N. Semenov; A. A. Shipkov

2009-01-01

426

Cryogenic engineering for superconducting power transmission systems  

Microsoft Academic Search

The successful introduction of helium-cooled (superconducting) transmission systems into electric utility networks will open a vast market for cryogenic engineering components and services. If only 10 percent of the anticipated investment in transmission facilities in the U.S. after 1990 is made in helium-cooled systems this will represent a potential annual market of over $120,000,000 for the manufacturers of cryogenic components.

Forsyth

1976-01-01

427

Internal combustion engine power. A quarter century in review  

SciTech Connect

The advancements have been momentous. A review of the past quarter century of progress - including engine efficiencies, power ratings, fuels, emissions and the technological advances associated with these parameters - draws the real and outstanding developments of the period into perspective. Though the shapes of engines appear to be the same, few of the easy product classifications that existed in 1969 have survived to this day. In addition, the pattern of engine development is becoming similar throughout the world. All diesel engine design work, regardless of the country in which it is being carried out, is related to increasing specific output, from the smaller high-speed diesel, gas and gas turbine engines to the very largest stationary and marine power engines. This is being accomplished for the reciprocating engine by, basically, the same design and research techniques: higher speed, larger engine displacement through larger cylinder sizes, more cylinders with V-type configurations, and higher mean effective pressures through intensive use of turbo-charging and charge-air cooling, along with cylinder-head and injection process modifications. 6 figs.

Kane, J.

1994-04-01

428

Development and Evaluation of a Prototype Search Engine to Meet Public Health Information Needs  

PubMed Central

Grey literature is information not available through commercial publishers. It is a sizable and valuable information source for public health (PH) practice but because documents are not formally indexed the information is difficult to locate. Public Health Information Search (PHIS) was developed to address this problem. NLP techniques were used to create informative document summaries for an extensive collection of grey literature on PH topics. The system was evaluated with PH workers using the critical incident technique in a two stage field evaluation to assess effectiveness in comparison with Google. Document summaries were found to be both helpful and accurate. Increased document collection size and enhanced result rankings improved search effectiveness from 28% to 55%. PHIS would work best in conjunction with Google or another broad coverage Web search engine when searching for documents and reports as opposed to local health data and primary disease information. PHIS could enhance both the quality and quantity of PH search results.

Keeling, Jonathan W.; Turner, Anne M.; Allen, Eileen E.; Rowe, Steven A.; Merrill, Jacqueline A.; Liddy, Elizabeth D.; Turtle, Howard R.

2011-01-01

429

Development and evaluation of a prototype search engine to meet public health information needs.  

PubMed

Grey literature is information not available through commercial publishers. It is a sizable and valuable information source for public health (PH) practice but because documents are not formally indexed the information is difficult to locate. Public Health Information Search (PHIS) was developed to address this problem. NLP techniques were used to create informative document summaries for an extensive collection of grey literature on PH topics. The system was evaluated with PH workers using the critical incident technique in a two stage field evaluation to assess effectiveness in comparison with Google. Document summaries were found to be both helpful and accurate. Increased document collection size and enhanced result rankings improved search effectiveness from 28% to 55%. PHIS would work best in conjunction with Google or another broad coverage Web search engine when searching for documents and reports as opposed to local health data and primary disease information. PHIS could enhance both the quality and quantity of PH search results. PMID:22195125

Keeling, Jonathan W; Turner, Anne M; Allen, Eileen E; Rowe, Steven A; Merrill, Jacqueline A; Liddy, Elizabeth D; Turtle, Howard R

2011-10-22

430

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

Code of Federal Regulations, 2013 CFR

...AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES Block Tests; Turbine Aircraft Engines § 33.96 Engine tests in auxiliary power unit (APU) mode. If the engine is designed with a...

2013-01-01

431

A study of medical and health queries to web search engines.  

PubMed

This paper reports findings from an analysis of medical or health queries to different web search engines. We report results: (i). comparing samples of 10000 web queries taken randomly from 1.2 million query logs from the AlltheWeb.com and Excite.com commercial web search engines in 2001 for medical or health queries, (ii). comparing the 2001 findings from Excite and AlltheWeb.com users with results from a previous analysis of medical and health related queries from the Excite Web search engine for 1997 and 1999, and (iii). medical or health advice-seeking queries beginning with the word 'should'. Findings suggest: (i). a small percentage of web queries are medical or health related, (ii). the top five categories of medical or health queries were: general health, weight issues, reproductive health and puberty, pregnancy/obstetrics, and human relationships, and (iii). over time, the medical and health queries may have declined as a proportion of all web queries, as the use of specialized medical/health websites and e-commerce-related queries has increased. Findings provide insights into medical and health-related web querying and suggests some implications for the use of the general web search engines when seeking medical/health information. PMID:15023208

Spink, Amanda; Yang, Yin; Jansen, Jim; Nykanen, Pirrko; Lorence, Daniel P; Ozmutlu, Seda; Ozmutlu, H Cenk

2004-03-01

432

Sansarn Offline: A Search Engine Tool for Managing, Archivingand Retrieving Offline Web Contents  

Microsoft Academic Search

Today the World Wide Web has become widely accepted as the world's largest information resource. These information are generally available for users who have accessible Internet connection. However, the problem known as digital divide still exists among peo- ple who live in rural areas, especially of developing countries. To alleviate this problem, we have devel- oped a search engine tool

Choochart Haruechaiyasak; Chatchawal Sangkeettrakarn

433

Beef up Your Competitor: A Model of Advertising Cooperation between Internet Search Engines  

Microsoft Academic Search

We propose a duopoly model of competition between internet search engines endowed with different technologies and study the effects of an agreement where the more advanced firm shares its technology with the inferior one. We show that the superior firm enters the agreement only if it results in a large enough increase in demand for advertising space at the competing

Geza Sapi; Irina Suleymanova

2009-01-01

434

Search engine optimising elements and their effect on Website visibility: implementation of the Chambers model  

Microsoft Academic Search

The primary objective of this research project was to determine whether Search Engine Optimisation (SEO) elements, as identified in the Chambers model, affect website visibility. A full literature review was done on SEO, as well as an evaluation of the Chambers model. Secondly, empirical work has been done to determine whether or not the implementation of the Chambers model have

EB Visser; WT Kritzinger; M Weideman

435

HEV Choice Models as a Search Engine for the Specification of Nested Logit Tree Structures  

Microsoft Academic Search

This paper illustrates how the heteroskedastic extreme value (HEV) model can serve as an effective search engine for identifying appropriate tree structures in hierarchical choice models, particularly the nested logit. This use of the HEV model exploits its ability to estimate unique variances, and hence unique scale parameters, for each alternative in a choice set. The analysis of variance can

David A. Hensher

1999-01-01

436

Online Admissions and Internet Recruiting: An Anatomy of Search Engine Placement.  

ERIC Educational Resources Information Center

|Asserts that online recruiting is a major facet of building and improving enrollment, examining: the student perspective (organizing the site, highlighting benefits and successes, ease of contact, integrating the financial side, and benefits of e-mail); search engines (ranking and recruitment, links, link popularity, and key departments and…

Whiteside, Richard; Mentz, George S.

2003-01-01

437

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

Microsoft Academic Search

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

Jan Brophy; David Bawden

2005-01-01

438

A Technique for Measuring the Relative Size and Overlap of Public Web Search Engines  

Microsoft Academic Search

Search engines are among the most useful and popular services on the Web. Users are eager to know how they compare. Which one has the largest coverage? Have they indexed the same portion of the Web? How many pages are out there? Although these questions have been debated in the popular and technical press, no objective evaluation methodology has been

Krishna Bharat; Andrei Z. Broder

1998-01-01

439

The Parallel Evolution of Search Engines and Digital Libraries: Their Convergence to the Mega-Portal  

Microsoft Academic Search

The information era has brought with it the well-known problem of 'Information Explosion'. There are many and varied Search Engines (SEs) on the Internet but it is still hard to locate and concentrate only on materials relevant to a specific task. Digital Libraries (DLs) could better provide such services on the Web. However, DLs have been much less researched and

Uri Hanani; Ariel J. Frank

2000-01-01

440

A Comprehensive and Systematic Model of User Evaluation of Web Search Engines: I. Theory and Background.  

ERIC Educational Resources Information Center

|Reports on a project that proposes and tests a comprehensive and systematic model of user evaluation of Web search engines. This article describes the model, including a set of criteria and measures and a method for implementation. A literature review portrays settings for developing the model and places applications of the model in contemporary…

Su, Louise T.

2003-01-01

441

A User-Centered Approach to Evaluating Human Interaction with Web Search Engines: An Exploratory Study.  

ERIC Educational Resources Information Center

|Explores a user-centered approach to evaluating the Web search engine Inquirus. Inquirus was rated highly by users on various usability measures; all users experienced some level of shift/change in their information problem, information seeking, and personal knowledge due to their Inquirus interaction; and different users experienced different…

Spink, Amanda

2002-01-01

442

Online optimization of an engine controller by means of a genetic algorithm using history of search  

Microsoft Academic Search

In the present paper, online optimization of an engine controller by means of genetic algorithms (GA) is discussed. In optimization of real complex systems through experiments and computer simulation using random variables, optimization methods must cope with uncertainty of objective function and limitation of possible number of evaluation. Sano et al. (2000) proposed a GA utilizing history of search (GA

Y. Sano; H. Kita; I. Kamihira; M. Yamaguchi

2000-01-01

443

A novel algorithm for validating peptide identification from a shotgun proteomics search engine.  

PubMed

Liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) has revolutionized the proteomics analysis of complexes, cells, and tissues. In a typical proteomic analysis, the tandem mass spectra from a LC-MS/MS experiment are assigned to a peptide by a search engine that compares the experimental MS/MS peptide data to theoretical peptide sequences in a protein database. The peptide spectra matches are then used to infer a list of identified proteins in the original sample. However, the search engines often fail to distinguish between correct and incorrect peptides assignments. In this study, we designed and implemented a novel algorithm called De-Noise to reduce the number of incorrect peptide matches and maximize the number of correct peptides at a fixed false discovery rate using a minimal number of scoring outputs from the SEQUEST search engine. The novel algorithm uses a three-step process: data cleaning, data refining through a SVM-based decision function, and a final data refining step based on proteolytic peptide patterns. Using proteomics data generated on different types of mass spectrometers, we optimized the De-Noise algorithm on the basis of the resolution and mass accuracy of the mass spectrometer employed in the LC-MS/MS experiment. Our results demonstrate De-Noise improves peptide identification compared to other methods used to process the peptide sequence matches assigned by SEQUEST. Because De-Noise uses a limited number of scoring attributes, it can be easily implemented with other search engines. PMID:23402659

Jian, Ling; Niu, Xinnan; Xia, Zhonghang; Samir, Parimal; Sumanasekera, Chiranthani; Mu, Zheng; Jennings, Jennifer L; Hoek, Kristen L; Allos, Tara; Howard, Leigh M; Edwards, Kathryn M; Weil, P Anthony; Link, Andrew J

2013-02-12

444

Combining Semantic Web Search with the Power of Inductive Reasoning  

Microsoft Academic Search

Extensive research activities are recently directed towards the Semantic Web as a future form of the Web. Consequently, Web search as the key technology of the Web is evolving towards some novel form of Semantic Web search. A very promising recent approach to such Semantic Web search is based on combining stan- dard Web search with ontological background knowledge and

Claudia d’Amato; Nicola Fanizzi; Bettina Fazzinga; Georg Gottlob; Thomas Lukasiewicz

2009-01-01

445

Andromeda: a peptide search engine integrated into the MaxQuant environment.  

PubMed

A key step in mass spectrometry (MS)-based proteomics is the identification of peptides in sequence databases by their fragmentation spectra. Here we describe Andromeda, a novel peptide search engine using a probabilistic scoring model. On proteome data, Andromeda performs as well as Mascot, a widely used commercial search engine, as judged by sensitivity and specificity analysis based on target decoy searches. Furthermore, it can handle data with arbitrarily high fragment mass accuracy, is able to assign and score complex patterns of post-translational modifications, such as highly phosphorylated peptides, and accommodates extremely large databases. The algorithms of Andromeda are provided. Andromeda can function independently or as an integrated search engine of the widely used MaxQuant computational proteomics platform and both are freely available at www.maxquant.org. The combination enables analysis of large data sets in a simple analysis workflow on a desktop computer. For searching individual spectra Andromeda is also accessible via a web server. We demonstrate the flexibility of the system by implementing the capability to identify cofragmented peptides, significantly improving the total number of identified peptides. PMID:21254760

Cox, Jürgen; Neuhauser, Nadin; Michalski, Annette; Scheltema, Richard A; Olsen, Jesper V; Mann, Matthias

2011-02-22

446

How the engineers are sinking nuclear power  

SciTech Connect

Poor concrete work, improper welds, and construction and installation errors at nuclear power plants are blamed on budget and schedule pressures and the nuclear industry's lack of quality assurance. Nuclear Regulatory Commission Chairman Nunzio Palladino, who trained under the exacting Admiral Rickover, has ordered the industry to upgrade its quality assurance and to take safety regulations and training more seriously. The industry's response is a program that will send a team of Institute of Nuclear Power Operators (INPO) investigators to each plant under construction every 18 months to make spot checks of worker training and performance. The Electric Power Research Institute is also developing equipment to test construction quality. Both industry officials and critics remain skeptical that quality assurance will improve with more regulation. (DCK)

Mintz, J.

1983-06-01

447

Rankine engine solar power generation. II - The power generation module  

Microsoft Academic Search

The characteristics and performance of a solar flat plate collector powered low temperature power generation module (PGM) funded by NASA are described. The PGM uses a halogen refrigerant as a working fluid, which is pumped from a reservoir to a chamber where it is heated by exchangers filled with an ethylene-glycol fluid which has gained thermal energy from a collector

W. D. Batton; R. E. Barber

1981-01-01

448

The LAILAPS search engine: a feature model for relevance ranking in life science databases.  

PubMed

Efficient and effective information retrieval in life sciences is one of the most pressing challenge in bioinformatics. The incredible growth of life science databases to a vast network of interconnected information systems is to the same extent a big challenge and a great chance for life science research. The knowledge found in the Web, in particular in life-science databases, are a valuable major resource. In order to bring it to the scientist desktop, it is essential to have well performing search engines. Thereby, not the response time nor the number of results is important. The most crucial factor for millions of query results is the relevance ranking. In this paper, we present a feature model for relevance ranking in life science databases and its implementation in the LAILAPS search engine. Motivated by the observation of user behavior during their inspection of search engine result, we condensed a set of 9 relevance discriminating features. These features are intuitively used by scientists, who briefly screen database entries for potential relevance. The features are both sufficient to estimate the potential relevance, and efficiently quantifiable. The derivation of a relevance prediction function that computes the relevance from this features constitutes a regression problem. To solve this problem, we used artificial neural networks that have been trained with a reference set of relevant database entries for 19 protein queries. Supporting a flexible text index and a simple data import format, this concepts are implemented in the LAILAPS search engine. It can easily be used both as search engine for comprehensive integrated life science databases and for small in-house project databases. LAILAPS is publicly available for SWISSPROT data at http://lailaps.ipk-gatersleben.de. PMID:20375444

Lange, Matthias; Spies, Karl; Colmsee, Christian; Flemming, Steffen; Klapperstück, Matthias; Scholz, Uwe

2010-03-25

449

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

Microsoft Academic Search

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

Lotfi A. Zadeh

2006-01-01

450

GAS TURBINES IN NUCLEAR POWER ENGINEERING  

Microsoft Academic Search

The use of gas turbines in nuclear power generation primarily requiring ; high-temperature reactors, that is, reactors with the highest possible outlet ; temperature of the coolant, is at present in its early stage of development since ; experimental reactors with gas outlet temperatures of 650 to 750 c- ; C or higher are so far only in the projection

Becvar

1962-01-01

451

GeneView: a comprehensive semantic search engine for PubMed  

PubMed Central

Research results are primarily published in scientific literature and curation efforts cannot keep up with the rapid growth of published literature. The plethora of knowledge remains hidden in large text repositories like MEDLINE. Consequently, life scientists have to spend a great amount of time searching for specific information. The enormous ambiguity among most names of biomedical objects such as genes, chemicals and diseases often produces too large and unspecific search results. We present GeneView, a semantic search engine for biomedical knowledge. GeneView is built upon a comprehensively annotated version of PubMed abstracts and openly available PubMed Central full texts. This semi-structured representation of biomedical texts enables a number of features extending classical search engines. For instance, users may search for entities using unique database identifiers or they may rank documents by the number of specific mentions they contain. Annotation is performed by a multitude of state-of-the-art text-mining tools for recognizing mentions from 10 entity classes and for identifying protein–protein interactions. GeneView currently contains annotations for >194 million entities from 10 classes for ?21 million citations with 271?000 full text bodies. GeneView can be searched at http://bc3.informatik.hu-berlin.de/.

Thomas, Philippe; Starlinger, Johannes; Vowinkel, Alexander; Arzt, Sebastian; Leser, Ulf

2012-01-01

452

Developing a harmonics education facility in a power system simulator for power engineering education  

Microsoft Academic Search

This paper describes a newly installed harmonics education facility in detail to teach students about harmonics related problems in a power system. A nonlinear load, which produces harmonic currents, and a harmonic filter, which is a mitigation facility, are merged into an existing power system simulator for advanced power engineering education. The nonlinear load is a widely used three-phase, 6-pulse

Chi-Jui Wu; Wei-Nan Chang

1997-01-01

453

Control device for controlling an engine of a turbine power system having more than one engine  

SciTech Connect

This patent describes a control device for controlling an engine of a turbine power system having more than one engine comprising first torque measuring means for generating a primary torque signal which varies as a function of the torque generated by the controlled engine, and second torque measuring means for generating a secondary torque signal which varies as a function of the torque generated by one of the other engines of the power system. A means subtracts the secondary torque signal from the primary torque signal to form a difference signal. The controlled engine has power turbine, means for generating a speed signal proportional to the speed of the power turbine, means for generating a summing signal as a function of the sum of the speed signal and the difference signal, and means for generating a control signal as a function of the summing signal. The control signal generating means includes means for integrating a difference signal which varies as a function of the difference between the summing signal and a feedback signal which varies as a function of the control signal. A means is responsive to the control signal for controlling fuel flow to the controlled engine under predetermined conditions.

Mittendorf, G.C.; Sollman, F.G.

1987-02-24

454

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

455

The Google Conundrum: Perpetrator or Facilitator on the Net? - Forging a Fair Copyright Framework of Rights, Liability and Responsibility in Response to Search Engine 2.0, Part I The Google Images Search Engine  

Microsoft Academic Search

Is Google in its quest for search engine optimization through the creation of new technologies, which not only improves its search algorithms but also refines its search functions for users, doing it in a manner that makes it a perpetrator of primary copyright infringement or an invaluable facilitator for Internet functionality? How should the balance of interests in the treatment

CHIK Kam Wai Warren Bartholomew

2011-01-01

456

The Google conundrum: Perpetrator or facilitator on the net? – Forging a fair copyright framework of rights, liability and responsibility in response to search engine 2.0 – Part I: The Google Images Search Engine  

Microsoft Academic Search

Is Google in its quest for search engine optimization through the creation of new technologies, which not only improves its search algorithms but also refines its search functions for users, doing it in a manner that makes it a perpetrator of primary copyright infringement or an invaluable facilitator for Internet functionality? How should the balance of interests in the treatment

Warren B. Chik

2011-01-01

457

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

PubMed Central

This article illustrates a dissociation between the perceived attributes of an object and the ability of those attributes to guide the deployment of attention in visual search. Orientation is an attribute that guides search. Thus, a vertical line will “pop out” amid horizontal distractors. Amodal completion can create perceptually convincing oriented stimuli when two elements appear to form a complete object partially hidden behind an occluder. Previous work (e.g., Rensink & Enns, Vision Research, 38, 2489–2505, 1998) has shown a preattentive role for amodal completion in search tasks. Here, we show that orientation based on perceptually compelling amodal completion may fail to guide attention. The broader conclusion is that introspection is a poor guide to the capabilities of our internal search engine.

Reijnen, Ester; Horowitz, Todd S.; Pedersini, Riccardo; Pinto, Yair; Hulleman, Johan

2011-01-01

458

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

PubMed

This article illustrates a dissociation between the perceived attributes of an object and the ability of those attributes to guide the deployment of attention in visual search. Orientation is an attribute that guides search. Thus, a vertical line will "pop out" amid horizontal distractors. Amodal completion can create perceptually convincing oriented stimuli when two elements appear to form a complete object partially hidden behind an occluder. Previous work (e.g., Rensink & Enns, Vision Research, 38, 2489-2505, 1998) has shown a preattentive role for amodal completion in search tasks. Here, we show that orientation based on perceptually compelling amodal completion may fail to guide attention. The broader conclusion is that introspection is a poor guide to the capabilities of our internal search engine. PMID:21331672

Wolfe, Jeremy M; Reijnen, Ester; Horowitz, Todd S; Pedersini, Riccardo; Pinto, Yair; Hulleman, Johan

2011-05-01

459

Western Maryland Power Plant Siting Study: Conceptual Power Plant Layouts and Engineering Economics Evaluations Support.  

National Technical Information Service (NTIS)

Three locations in Western Maryland are being considered as potential candidate sites for a conventional coal fired power plant of upwards to 1890 MW (three 630 MW units). This report provides the detailed engineering and technical analyses of these three...

1984-01-01

460

An improved harmony search algorithm for power economic load dispatch  

Microsoft Academic Search

A meta-heuristic algorithm called harmony search (HS), mimicking the improvisation process of music players, has been recently developed. The HS algorithm has been successful in several optimization problems. The HS algorithm does not require derivative information and uses stochastic random search instead of a gradient search. In addition, the HS algorithm is simple in concept, few in parameters, and easy

Leandro dos Santos Coelho; Viviana Cocco Mariani

2009-01-01

461

Duke Engineering explores huge African Power Project  

SciTech Connect

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

Newman, P.

1994-10-14

462

Start Your Search Engines. Part 2: When Image is Everything, Here are Some Great Ways to Find One  

ERIC Educational Resources Information Center

There is no doubt that Google is great for finding images. Simply head to its home page, click the "Images" link, enter criteria in the search box, and--voila! In this article, the authors share some of their other favorite search engines for finding images. To make sure the desired images are available for educational use, consider searching for…

Adam, Anna; Mowers, Helen

2008-01-01

463

Agreement between Medline searches using the Medline-CD-Rom and Internet PubMed, BioMedNet, Medscape and Gateway search-engines  

Microsoft Academic Search

Objective To compare the information obtained from the Medline database using Internet commercial search engines with that obtained from a compact disc (Medline-CD). Methods An agreement study was carried out based on 101 clinical sce- narios provided by specialists in internal medicine, pharmacy, gynaecology- obstetrics, surgery and paediatrics. 175 search strategies were employed using the connector AND plus text within

Rosa Ángela Caro-Rojas; Javier H. Eslava-Schmalbach

2005-01-01

464

Method for engineering diagnostics at thermal power plants  

Microsoft Academic Search

The system for diagnosing equipment at thermal power plants is intended to check the efficiency of the equipment and to search for defects that arise during operation. A method used in the USSR for detecting damage such as breaks in turbine blades and the distortion of turbine rotors is discussed. The developed diagnosis method consists of comparing changes in vibration

Ya. S. Urintsev; Yu. A. Averbakh; V. I. Berlyand; M. M. Volynskii; V. L. Shiber

1981-01-01

465

Impact of Commercial Search Engines and International Databases on Engineering Teaching and Research  

ERIC Educational Resources Information Center

|For the last three decades, the engineering higher education and professional environments have been completely transformed by the "electronic/digital information revolution" that has included the introduction of personal computer, the development of email and world wide web, and broadband Internet connections at home. Herein the writer compares…

Chanson, Hubert

2007-01-01

466

Ceramics in engine components. (Latest citations from Engineered Materials Abstracts). NewSearch  

SciTech Connect

The bibliography contains citations concerning the application of ceramics in automotive and aerospace engine components. Mechanical properties are reviewed. The citations examine techniques for joining dissimilar materials, advantages and problems associated with substitutions of ceramics in lieu of metals, and types and methods of ceramic coatings. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1994-10-01

467

A search engine to identify pathway genes from expression data on multiple organisms  

PubMed Central

Background The completion of several genome projects showed that most genes have not yet been characterized, especially in multicellular organisms. Although most genes have unknown functions, a large collection of data is available describing their transcriptional activities under many different experimental conditions. In many cases, the coregulatation of a set of genes across a set of conditions can be used to infer roles for genes of unknown function. Results We developed a search engine, the Multiple-Species Gene Recommender (MSGR), which scans gene expression datasets from multiple organisms to identify genes that participate in a genetic pathway. The MSGR takes a query consisting of a list of genes that function together in a genetic pathway from one of six organisms: Homo sapiens, Drosophila melanogaster, Caenorhabditis elegans, Saccharomyces cerevisiae, Arabidopsis thaliana, and Helicobacter pylori. Using a probabilistic method to merge searches, the MSGR identifies genes that are significantly coregulated with the query genes in one or more of those organisms. The MSGR achieves its highest accuracy for many human pathways when searches are combined across species. We describe specific examples in which new genes were identified to be involved in a neuromuscular signaling pathway and a cell-adhesion pathway. Conclusion The search engine can scan large collections of gene expression data for new genes that are significantly coregulated with a pathway of interest. By integrating searches across organisms, the MSGR can identify pathway members whose coregulation is either ancient or newly evolved.

Chen, Chunnuan; Weirauch, Matthew T; Powell, Corey C; Zambon, Alexander C; Stuart, Joshua M

2007-01-01

468

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

469

Nitinol Heat Engine power plant system installation and cost optimization  

Microsoft Academic Search

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

E. C. Cady; J. L. McNichols

1984-01-01

470

Thermal energy storage for the Stirling engine powered automobile  

Microsoft Academic Search

A thermal energy storage (TES) system developed for use with the Stirling engine as an automotive power system has gravimetric and volumetric storage densities which are competitive with electric battery storage systems, meets all operational requirements for a practical vehicle, and can be packaged in compact sized automobiles with minimum impact on passenger and freight volume. The TES\\/Stirling system is

D. T. Morgan

1979-01-01

471

PARE: a power-aware hardware data prefetching engine  

Microsoft Academic Search

Aggressive hardware prefetching often significantly increases energy consumption in the memory system. Experiments show that a major fraction of prefetching energy degradation is due to the hardware history table related energy costs. In this paper, we present PARE, a Power-Aware pRefetching Engine that uses a newly designed indexed hardware history table. Compared to the conventional single table design, the new

Yao Guo; Mahmoud Ben Naser; Csaba Andras Moritz

2005-01-01

472

PARE: a power-aware hardware data prefetching engine  

Microsoft Academic Search

Aggressive hardware prefetching often significantly increases energy consumption in the memory system. Experiments show that a major fraction of prefetching energy degradation is due to the hardware history table related energy costs. In this paper, the authors presented PARE, a power-aware prefetching engine that uses a newly designed indexed hardware history table. Compared to the conventional single table design, the

Yao Guo; M. B. Naser; C. A. Moritz

2005-01-01

473

Engineering the storage battery as an underwater power supply  

Microsoft Academic Search

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

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

1973-01-01

474

From desktop to web [power engineering software application  

Microsoft Academic Search

This paper presents an overview of the conversion process for a specialized software application from a desk top environment to a web based environment. The technology based business software is used in planning applications for new electric power generation and storage facilities. The software, called TAG-Supply®, is an integrated application of database, text (pdf) and an analytical engine. The desktop

G. Ramachandran; R. Nandwani; T. Boyd

2002-01-01

475

14 CFR 135.371 - Large transport category airplanes: Reciprocating engine powered: En route limitations: One...  

Code of Federal Regulations, 2010 CFR

...false Large transport category airplanes: Reciprocating engine powered...PERSONS ON BOARD SUCH AIRCRAFT Airplane Performance Operating Limitations...371 Large transport category airplanes: Reciprocating engine...

2010-01-01

476

OMSSAGUI: An open-source user interface component to configure and run the OMSSA search engine  

PubMed Central

We here present a user-friendly and extremely lightweight tool that can serve as a stand-alone front-end for the Open MS Search Algorithm (OMSSA) search engine, or that can directly be used as part of an informatics processing pipeline for MS driven proteomics. The OMSSA graphical user interface (OMSSAGUI) tool is written in Java, and is supported on Windows, Linux, and OSX platforms. It is an open source under the Apache 2 license and can be downloaded from http://code.google.com/p/mass-spec-gui/.

Tharakan, Ravi; Martens, Lennart; Van Eyk, Jennifer E.; Graham, David R.

2010-01-01

477

OMSSAGUI: An open-source user interface component to configure and run the OMSSA search engine.  

PubMed

We here present a user-friendly and extremely lightweight tool that can serve as a stand-alone front-end for the Open MS Search Algorithm (OMSSA) search engine, or that can directly be used as part of an informatics processing pipeline for MS driven proteomics. The OMSSA graphical user interface (OMSSAGUI) tool is written in Java, and is supported on Windows, Linux, and OSX platforms. It is an open source under the Apache 2 license and can be downloaded from http://code.google.com/p/mass-spec-gui/. PMID:18563730

Tharakan, Ravi; Martens, Lennart; Van Eyk, Jennifer E; Graham, David R

2008-06-01

478

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

PubMed Central

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

Eysenbach, G.; Kohler, Ch.

2003-01-01

479

Facet engineering of high power single emitters  

NASA Astrophysics Data System (ADS)

The ever increasing demand for high-power, high-reliability operation of single emitters at 9xx nm wavelengths requires the development of laser diodes with improved facet regions immune to both catastrophic and wear-out failure modes. In our study, we have evaluated several laser facet definition technologies in application to 90 micron aperture single emitters in asymmetric design (In)GaAs/AlGaAs based material emitting at 915, 925 and 980nm. A common epitaxy and emitter design makes for a straightforward comparison of the facet technologies investigated. Our study corroborates a clear trend of increasing difficulty in obtaining reliable laser operation from 980nm down to 915nm. At 980nm, one can employ dielectric facet passivation with a pre-clean cycle delivering a device lifetime in excess of 3,000 hours at increasing current steps. At 925nm, quantum-well intermixing can be used to define non-absorbing mirrors giving good device reliability, albeit with a large efficiency penalty. Vacuum cleaved emitters have delivered excellent reliability at 915nm, and can be expected to perform just as well at 925 and 980nm. Epitaxial regrowth of laser facets is under development and has yet to demonstrate an appreciable reliability improvement. Only a weak correlation between start-of-life catastrophic optical mirror damage (COMD) levels and reliability was established. The optimized facet design has delivered maximum powers in excess of 19 MW/sq.cm (rollover limited) and product-grade 980nm single emitters with a slope efficiency of >1 W/A and a peak efficiency of >60%. The devices have accumulated over 1,500 hours of CW operation at 11W. A fiber-coupled device emits 10W ex-fiber with 47% efficiency.

Yanson, Dan; Levi, Moshe; Shamay, Moshe; Tesler, Renana; Rappaport, Noam; Don, Yaroslav; Karni, Yoram; Schnitzer, Itzhak; Sicron, Noam; Shusterman, Sergey

2011-02-01

480

MAPPER: a search engine for the computational identification of putative transcription factor binding sites in multiple genomes  

PubMed Central

Background Cis-regulatory modules are combinations of regulatory elements occurring in close proximity to each other that control the spatial and temporal expression of genes. The ability to identify them in a genome-wide manner depends on the availability of accurate models and of search methods able to detect putative regulatory elements with enhanced sensitivity and specificity. Results We describe the implementation of a search method for putative transcription factor binding sites (TFBSs) based on hidden Markov models built from alignments of known sites. We built 1,079 models of TFBSs using experimentally determined sequence alignments of sites provided by the TRANSFAC and JASPAR databases and used them to scan sequences of the human, mouse, fly, worm and yeast genomes. In several cases tested the method identified correctly experimentally characterized sites, with better specificity and sensitivity than other similar computational methods. Moreover, a large-scale comparison using synthetic data showed that in the majority of cases our method performed significantly better than a nucleotide weight matrix-based method. Conclusion The search engine, available at , allows the identification, visualization and selection of putative TFBSs occurring in the promoter or other regions of a gene from the human, mouse, fly, worm and yeast genomes. In addition it allows the user to upload a sequence to query and to build a model by supplying a multiple sequence alignment of binding sites for a transcription factor of interest. Due to its extensive database of models, powerful search engine and flexible interface, MAPPER represents an effective resource for the large-scale computational analysis of transcriptional regulation.

Marinescu, Voichita D; Kohane, Isaac S; Riva, Alberto

2005-01-01

481

Development of geothermal power engineering technologies in Russia  

NASA Astrophysics Data System (ADS)

The present state of geothermal power engineering in Russia and prospects for its development are considered. An assessment is given of the projects of constructing a pilot binary geothermal power plant in Kamchatka, developing geothermal heat supply systems in the town of Vilyuchinsk and settlement of Rozovyi, and increasing the installed capacity of the Mutnovsk geothermal power station, which are the top-priority projects implemented by OAO RusGidro with scientific and technical support from ZAO GEOINKOM and ZAO Geoterm-EM.

Tomarov, G. V.; Nikol'Skii, A. I.; Semenov, V. N.; Shipkov, A. A.

2009-11-01

482

Status and prospects of heat-power engineering  

SciTech Connect

An attempt to estimate the technical level of power plants firing fossil fuel is made. Tendencies of development and updating processes used at these plants are analyzed together with the existing problems and ways for their solution. The condition of Russian power plants is considered against the background of the state of the world heat-power engineering. Attention is devoted to long-term problems like reduction of CO{sub 2} emissions into the atmosphere and prediction of the structure of generating plants until 2050.

G.G. Ol'khovskii [All-Russia Thermal Engineering Institute, Moscow (Russian Federation)

2005-03-01

483

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

NASA Astrophysics Data System (ADS)

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

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

484

Studying dream content using the archive and search engine on DreamBank.net.  

PubMed

This paper shows how the dream archive and search engine on DreamBank.net, a Web site containing over 22,000 dream reports, can be used to generate new findings on dream content, some of which raise interesting questions about the relationship between dreaming and various forms of waking thought. It begins with studies that draw dream reports from DreamBank.net for studies of social networks in dreams, and then demonstrates the usefulness of the search engine by employing word strings relating to religious and sexual elements. Examples from two lengthy individual dream series are used to show how the dreams of one person can be studied for characters, activities, and emotions. A final example shows that accurate inferences about a person's religious beliefs can be made on the basis of reading through dreams retrieved with a few keywords. The overall findings are similar to those in studies using traditional forms of content analysis. PMID:18682331

Domhoff, G William; Schneider, Adam

2008-08-03

485

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

486

Size dependence of efficiency at maximum power of heat engine  

NASA Astrophysics Data System (ADS)

We perform a molecular dynamics computer simulation of a heat engine model to study how the engine size difference affects its performance. Upon tactically increasing the size of the model anisotropically, we determine that there exists an optimum size at which the model attains the maximum power for the shortest working period. This optimum size locates between the ballistic heat transport region and the diffusive heat transport one. We also study the size dependence of the efficiency at the maximum power. Interestingly, we find that the efficiency at the maximum power around the optimum size attains a value that has been proposed as a universal upper bound, and it even begins to exceed the bound as the size further increases. We explain this behavior of the efficiency at maximum power by using a linear response theory for the heat engine operating under a finite working period, which naturally extends the low-dissipation Carnot cycle model [M. Esposito, R. Kawai, K. Lindenberg, C. Van den Broeck, Phys. Rev. Lett. 105, 150603 (2010)]. The theory also shows that the efficiency at the maximum power under an extreme condition may reach the Carnot efficiency in principle.

Izumida, Y.; Ito, N.

2013-10-01

487

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

488

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

489

Developing an Adaptive Search Engine for E-Commerce Using a Web Mining Approach  

Microsoft Academic Search

Discusses current work using an adaptive learning algorithm to dynamically create the content of an e-commerce search engine so that the implicit knowledge extracted by the Web text mining module can be provided in the B2B (business-to-business) portal. In this paper, we develop an algorithmic approach for automatically discovering implicit customer knowledge from the Internet by means of a Web

Chung-hong Lee; Hsin-chang Yang

2001-01-01

490

Development of a Google-Based Search Engine for Data Mining Radiology Reports  

Microsoft Academic Search

The aim of this study is to develop a secure, Google-based data-mining tool for radiology reports using free and open source\\u000a technologies and to explore its use within an academic radiology department. A Health Insurance Portability and Accountability\\u000a Act (HIPAA)-compliant data repository, search engine and user interface were created to facilitate treatment, operations,\\u000a and reviews preparatory to research. The Institutional

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

2009-01-01

491

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

Microsoft Academic Search

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

Peter Knees; Tim Pohle; Markus Schedl; Gerhard Widmer

2007-01-01

492

What's new on the web?: the evolution of the web from a search engine perspective  

Microsoft Academic Search

We seek to gain improved insight into how Web search engines shouldcope with the evolving Web, in an attempt to provide users with themost up-to-date results possible. For this purpose we collectedweekly snapshots of some 150 Web sites over the course of one year,and measured the evolution of content and link structure. Our measurements focus on aspects of potential interest

Alexandros Ntoulas; Junghoo Cho; Christopher Olston

2004-01-01

493

A Combined Genetic Adaptive Search (GeneAS) for Engineering Design  

Microsoft Academic Search

In this paper, a flexible yet efficient algorithm for solving engineering design optimizationproblems is presented. The algorithm is developed based on both binary-coded and realcodedgenetic algorithms (GAs). Since both GAs are used, the variables involving discrete,continuous, and zero-one variables are handled quite efficiently. The algorithm restricts itssearch only to the permissible values of the variables, thereby reducing the search effort

Kalyanmoy Deb; Mayank Goyal

1996-01-01

494

Search engine visibility: the effect of generic top-level domain choice  

Microsoft Academic Search

The principle objective of this research project is to determine whether or not search engines rank websites in dot-com domains higher than alternative generic top-level domains (gTLDs). The research question is: Should websites in these other gTLDs have to increase their marketing exposure of their websites? The methods to be employed in this research project are to build separate websites

Z. Hamdulay; M. Weideman

495

CrossSearch, a user-friendly search engine for detecting chemically cross-linked peptides in conjugated proteins.  

PubMed

Chemical cross-linking and high resolution MS have been integrated successfully to capture protein interactions and provide low resolution structural data for proteins that are refractive to analyses by NMR or crystallography. Despite the versatility of these combined techniques, the array of products that is generated from the cross-linking and proteolytic digestion of proteins is immense and generally requires the use of labeling strategies and/or data base search algorithms to distinguish actual cross-linked peptides from the many side products of cross-linking. Most strategies reported to date have focused on the analysis of small cross-linked protein complexes (<60 kDa) because the number of potential forms of covalently modified peptides increases dramatically with the number of peptides generated from the digestion of such complexes. We report herein the development of a user-friendly search engine, CrossSearch, that provides the foundation for an overarching strategy to detect cross-linked peptides from the digests of large (>or=170-kDa) cross-linked proteins, i.e. conjugates. Our strategy combines the use of a low excess of cross-linker, data base searching, and Fourier transform ion cyclotron resonance MS to experimentally minimize and theoretically cull the side products of cross-linking. Using this strategy, the (alpha beta gamma delta)(4) phosphorylase kinase model complex was cross-linked to form with high specificity a 170-kDa betagamma conjugate in which we identified residues involved in the intramolecular cross-linking of the 125-kDa beta subunit between its regulatory N terminus and its C terminus. This finding provides an explanation for previously published homodimeric two-hybrid interactions of the beta subunit and suggests a dynamic structural role for the regulatory N terminus of that subunit. The results offer proof of concept for the CrossSearch strategy for analyzing conjugates and are the first to reveal a tertiary structural element of either homologous alpha or beta regulatory subunit of phosphorylase kinase. PMID:18281724

Nadeau, Owen W; Wyckoff, Gerald J; Paschall, Justin E; Artigues, Antonio; Sage, Jessica; Villar, Maria T; Carlson, Gerald M

2008-02-16

496

Quantitative evaluation of recall and precision of CAT Crawler, a search engine specialized on retrieval of Critically Appraised Topics  

PubMed Central

Background Critically Appraised Topics (CATs) are a useful tool that helps physicians to make clinical decisions as the healthcare moves towards the practice of Evidence-Based Medicine (EBM). The fast growing World Wide Web has provided a place for physicians to share their appraised topics online, but an increasing amount of time is needed to find a particular topic within such a rich repository. Methods A web-based application, namely the CAT Crawler, was developed by Singapore's Bioinformatics Institute to allow physicians to adequately access available appraised topics on the Internet. A meta-search engine, as the core component of the application, finds relevant topics following keyword input. The primary objective of the work presented here is to evaluate the quantity and quality of search results obtained from the meta-search engine of the CAT Crawler by comparing them with those obtained from two individual CAT search engines. From the CAT libraries at these two sites, all possible keywords were extracted using a keyword extractor. Of those common to both libraries, ten were randomly chosen for evaluation. All ten were submitted to the two search engines individually, and through the meta-search engine of the CAT Crawler. Search results were evaluated for relevance both by medical amateurs and professionals, and the respective recall and precision were calculated. Results While achieving an identical recall, the meta-search engine showed a precision of 77.26% (±14.45) compared to the individual search engines' 52.65% (±12.0) (p < 0.001). Conclusion The results demonstrate the validity of the CAT Crawler meta-search engine approach. The improved precision due to inherent filters underlines the practical usefulness of this tool for clinicians.

Dong, Peng; Wong, Ling Ling; Ng, Sarah; Loh, Marie; Mondry, Adrian

2004-01-01

497

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

NASA Astrophysics Data System (ADS)

This chapter investigates the `winner-takes-all' hypothesis in relation to how academic researchers access online sources and resources. Some have argued that the Web provides access to a wider range of sources of information than offline resources. Others, such as Hindman et al. (2003), have shown that access to online resources is highly concentrated, particularly because of how Internet search engines are designed. With researchers increasingly using the Web and Internet search engines to disseminate and locate information and expertise, the question of whether the use of online resources enhances or diminishes the range of available sources of expertise is bound to become more pressing. To address this question four globally relevant knowledge domains were investigated using large-scale link analysis and a series of semi-structured interviews with UK-based academic researchers. We found there to be no uniform `winner-takes-all' effect in the use of online resources. Instead, there were different types of information gatekeepers for the four domains we examined and for the types of resources and sources that are sought. Particular characteristics of a knowledge domain's information environment appear to determine whether Google and other Internet search engines function as a facilitator in accessing expertise or as an influential gatekeeper.

Fry, J.; Virkar, S.; Schroeder, R.

498

Harmony search algorithm for solving combined heat and power economic dispatch problems  

Microsoft Academic Search

Economic dispatch (ED) is one of the key optimization problems in electric power system operation. The problem grows complex if one or more units produce both power and heat. Combined heat and power economic dispatch (CHPED) problem is a complicated problem that needs powerful methods to solve. This paper presents a harmony search (EDHS) algorithm to solve CHPED. Some standard

Esmaile Khorram; Majid Jaberipour

2011-01-01

499

Precise and global identification of phospholipid molecular species by an Orbitrap mass spectrometer and automated search engine Lipid Search.  

PubMed

In the present research, we have established a new lipidomics approach for the comprehensive and precise identification of molecular species in a crude lipid mixture using a LTQ Orbitrap mass spectrometer (MS) and reverse-phase liquid chromatography (RPLC) combination with our newly developed lipid search engine "Lipid Search". LTQ Orbitrap provides high mass accuracy MS spectra by Fourier-transform (FT) mass spectrometer mode and can perform rapid MS(n) by ion trap (IT) mass spectrometer mode. In this study, the negative ion mode was selected to detect fragment ions from phospholipids, such as fatty acid anions, by MS2 or MS3. We selected the specific detection approach by neutral loss survey-dependent MS3, for the identification of molecular species of phosphatidylcholine, sphingomyelin and phosphatidylserine. Identification of molecular species was performed by using both the high mass accuracy of the mass spectrometric data obtained from FT mode and structural data obtained from fragments in IT mode. Some alkylacyl and alkenylacyl species have the same m/z value as molecular-related ions and fragment ions, thus, direct acid hydrolysis analysis was performed to identify alkylacyl and alkenylacyl species, and then the RPLC-LTQ Orbitrap method was applied. As a result, 290 species from mouse liver and 248 species from mouse brain were identified within six different classes of phospholipid, only those in manually detected and confirmed. Most of all manually detected mass peaks were also automatically detected by "Lipid Search". Adding to differences in molecular species in different classes of phospholipids, many characteristic differences in molecular species were detected in mouse liver and brain. More variable number of saturated and monounsaturated fatty acid-containing molecular species were detected in mouse brain than liver. PMID:20452604

Taguchi, Ryo; Ishikawa, Masaki

2010-04-21

500

Yale Image Finder (YIF): a new search engine for retrieving biomedical images  

PubMed Central

Summary: Yale Image Finder (YIF) is a publicly accessible search engine featuring a new way of retrieving biomedical images and associated papers based on the text carried inside the images. Image queries can also be issued against the image caption, as well as words in the associated paper abstract and title. A typical search scenario using YIF is as follows: a user provides few search keywords and the most relevant images are returned and presented in the form of thumbnails. Users can click on the image of interest to retrieve the high resolution image. In addition, the search engine will provide two types of related images: those that appear in the same paper, and those from other papers with similar image content. Retrieved images link back to their source papers, allowing users to find related papers starting with an image of interest. Currently, YIF has indexed over 140 000 images from over 34 000 open access biomedical journal papers. Availability: http://krauthammerlab.med.yale.edu/imagefinder/ Contact: michael.krauthammer@yale.edu

Xu, Songhua; McCusker, James; Krauthammer, Michael

2008-01-01