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1

The roles of geography markup language (GML), scalable vector graphics (SVG), and Web feature service (WFS) specifications in the development of Internet geographic information systems (GIS)  

Microsoft Academic Search

The objective of this paper is to address two issues of current Internet Geographic Information Systems (GIS) programs – interoperability and graphic image output issues – using standard-based technologies, specifically, the Geography Markup Language (GML), Scalable Vector Graphics (SVG) and the OpenGIS Web Feature Service (WFS) Implementation Specifications developed by the OpenGIS Consortium (OGC). A strategy is proposed to use

Zhong-Ren Peng; Chuanrong Zhang

2004-01-01

2

Web Features  

NSDL National Science Digital Library

Web Features, presented by the Economic Policy Institute (EPI), is a collection of online resources for consumers about public opinion data. An economic snapshot, updated weekly, provides graphs and charts to highlight an economic issue, and this site also includes a selection of opinions from the EPI staff and their analysis of current economic data written in layperson's terms.

3

Profiling the OGC Web Feature Service For Climate Science Datasets.  

NASA Astrophysics Data System (ADS)

By describing climate datasets with feature types such as those defined by the Climate Science Modelling Language (CSML) and rendering those features in Geography Markup Language (GML), it becomes possible to deploy an OGC Web Feature Service (WFS) as a retrieval service for such data. The primary purpose of the WFS is to act as a filtering mechanism to allow for selection of features according to certain properties or constraints. However the latest version (2.0) of WFS, currently undergoing ISO standardization (ISO 19142), introduces a new concept of stored queries. The intention is that it can be used as a mechanism to define commonly used query filters, however the specification explicitly permits the use of executable code within stored queries. This provides a general flexible mechanism for defining and implementing operations on features or collections of features and hence makes it possible to perform useful tasks on climate features such as subsetting an atmospheric model on a particular pressure level or selecting a particular depth from a CTD profile. The very general nature of the mechanism however raises questions about the interoperable nature of such services. The burden of interoperability is pushed back from the WFS interface to the underlying data model. This talk reviews an implementation of the WFS with stored queries and considers the possible need for a Climate Science profile of WFS based on agreed feature models and operations.

Lowe, D.; Woolf, A.

2009-04-01

4

A spatial information search and display system on OpenGIS WFS  

NASA Astrophysics Data System (ADS)

With the development of the OpenGIS WFS (Web Feature Service) Specification by OGC (Open GIS Consortium), more and more WFS servers appear on the internet offering geospatial information. However, general users have no acquaintance with these servers, and the servers usually supply data encoding in GML (Geographic Mark Language) which cannot be comprehended vividly. Therefore, in this paper, we propose a spatial information search and display System on OpenGIS WFS. This system is capable of providing a WFS server list containing the data of the place that the users requested, retrieving the capabilities of the service chosen by the users and displaying the service data in vector graphics. The system architecture, working principles, and detailed function of each component are introduced. With this system, a practice web search engine on OpenGIS WFS can be constructed on the foundational idea of the system.

Jiang, Jun; Ren, Ying-Chao; Zhao, Yanqing; Yang, Chongjun

2009-10-01

5

Researcher Web Site Features  

Cancer.gov

Skip to Content Cancer Control and Population Sciences Home Applied Research Home Risk Factor Monitoring and Methods Home Automated Self-administered 24-hour Dietary Recall (ASA24™) Researcher Web Site Overview Features System Requirements Researcher

6

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

7

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

8

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

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: 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

11

THE IMPACT OF HABITAT FEATURES ON WEB FEATURES AND PREY CAPTURE OF ARGIOPE AURANTIA (ARANEAE, ARANEIDAE)  

Microsoft Academic Search

Prey capture by the orb-web spider, Argiope aurantia Lucas 1833, depends on the type of the web-site selected. I analyzed A. aurantia web sites in open field and adjacent forest edge habitats to identify habitat features associated with web characteristics and prey capture. In the open field, the use of herbs or grass for web attachment was associated with smaller

C. Neal McReynolds

2000-01-01

12

Automatic search of geospatial features for disaster and emergency management  

Microsoft Academic Search

Although the fast development of OGC (Open Geospatial Consortium) WFS (Web Feature Service) technologies has undoubtedly improved the sharing and synchronization of feature-level geospatial information across diverse resources, literature shows that there are still apparent limitations in the current implementation of OGC WFSs. Currently, the implementation of OGC WFSs only emphasizes syntactic data interoperability via standard interfaces and cannot resolve

Chuanrong Zhang; Tian Zhao; Weidong Li

2010-01-01

13

Application of GML and SVG in the development of WebGIS  

Microsoft Academic Search

Our study deals with two major issues impacting current WebGIS development: interoperability of heterogeneous data and visualization of vector data on the Web. By using the combination of Geography Markup Language (GML), Scalable Vector Graphics (SVG) and Web Feature Service (WFS) Implementation Specifications developed by the OpenGIS Consortium (OGC), a strategy of WebGIS is proposed. The GML is used as

Yan-tao XI; Jiang-guo WU

2008-01-01

14

Learning Deep Web Crawling with Diverse Features  

Microsoft Academic Search

The key to Deep Web crawling is to submit promising keywords to query form and retrieve Deep Web content efficiently. To select keywords, existing methods make a decision based on keywords’ statistic information deriving from TF and DF in local acquired records, thus work well only in textual databases providing full text search interfaces, whereas not well in structured databases

Lu Jiang; Zhaohui Wu; Qinghua Zheng; Jun Liu

2009-01-01

15

Full-Featured Web Conferencing Systems  

ERIC Educational Resources Information Center

|In order to match the customary strengths of the still dominant face-to-face instructional mode, a high-performance online learning system must employ synchronous as well as asynchronous communications; buttress graphics, animation, and text with live audio and video; and provide many of the features and processes associated with course…

Foreman, Joel; Jenkins, Roy

2005-01-01

16

Features: Real-Time Adaptive Feature and Document Learning for Web Search.  

ERIC Educational Resources Information Center

|Describes Features, an intelligent Web search engine that is able to perform real-time adaptive feature (i.e., keyword) and document learning. Explains how Features learns from users' document relevance feedback and automatically extracts and suggests indexing keywords relevant to a search query, and learns from users' keyword relevance feedback…

Chen, Zhixiang; Meng, Xiannong; Fowler, Richard H.; Zhu, Binhai

2001-01-01

17

Graph theoretical framework for simultaneously integrating visual and textual features for efficient web image clustering  

Microsoft Academic Search

With the explosive growth of Web and the recent develop- ment in digital media technology, the number of images on the Web has grown tremendously. Consequently, Web image clustering has emerged as an important application. Some of the initial efforts along this direction revolved around clus- tering Web images based on the visual features of images or textual features by

Manjeet Rege; Ming Dong; Jing Hua

2008-01-01

18

Identification of homozygous WFS1 mutations (p.Asp211Asn, p.Gln486*) causing severe Wolfram syndrome and first report of male fertility.  

PubMed

Wolfram syndrome (WFS) is a neurodegenerative genetic condition characterized by juvenile-onset of diabetes mellitus and optic atrophy. We studied clinical features and the molecular basis of severe WFS (neurodegenerative complications) in two consanguineous families from Iran. A clinical and molecular genetic investigation was performed in the affected and healthy members of two families. The clinical diagnosis of WFS was confirmed by the existence of diabetes mellitus and optic atrophy in the affected patients, who in addition had severe neurodegenerative complications. Sequencing of WFS1 was undertaken in one affected member from each family. Targeted mutations were tested in all members of relevant families. Patients had most of the reported features of WFS. Two affected males in the first family had fathered unaffected children. We identified two homozygous mutations previously reported with apparently milder phenotypes: family 1: c.631G>A (p.Asp211Asn) in exon 5, and family 2: c.1456C>T (p.Gln486*) in exon 8. Heterozygous carriers were unaffected. This is the first report of male Wolfram patients who have successfully fathered children. Surprisingly, they also had almost all the complications associated with WFS. Our report has implications for genetic counseling and family planning advice for other affected families. PMID:22781099

Haghighi, Amirreza; Haghighi, Alireza; Setoodeh, Aria; Saleh-Gohari, Nasrollah; Astuti, Dewi; Barrett, Timothy G

2012-07-11

19

Expectations and rankings of Web site quality features: results of two studies on user perceptions  

Microsoft Academic Search

In the emerging electronic environment, the creation of customer-centered Web sites is becoming increasingly important. We report on two exploratory studies on user perceptions of using Web sites. We first use Kano's (1984) Model of Quality to conduct an investigation of quality features in the Web environment. An independently conducted study later expands the first study by addressing several limitations.

Ping Zhang; Gisela von Dran

2001-01-01

20

Diffusion of Courses with World Wide Web Features: Perceptions of Journalism and Mass Communication Program Administrators.  

ERIC Educational Resources Information Center

|Examines perceptions of top administrators concerning courses with Web features at Association of Schools of Journalism and Mass Communication (ASJMC) programs. Studies the imperatives and pressures to implement courses with Web features as well as resistances to implementation. Suggests that administrators perceive an extensive set of needs and…

Sutherland, Patrick J.

2003-01-01

21

Diffusion of Courses with World Wide Web Features: Perceptions of Journalism and Mass Communication Program Administrators.  

ERIC Educational Resources Information Center

Examines perceptions of top administrators concerning courses with Web features at Association of Schools of Journalism and Mass Communication (ASJMC) programs. Studies the imperatives and pressures to implement courses with Web features as well as resistances to implementation. Suggests that administrators perceive an extensive set of needs and…

Sutherland, Patrick J.

2003-01-01

22

Features for Killer Apps from a Semantic Web Perspective  

Microsoft Academic Search

Killer apps are highly transformative technologies that create new markets and widespread patterns of behaviour. Information Technology gener- ally, and the Web in particular, has benefited from killer apps to create new net- works of users and increase its value. The Semantic Web community on the other hand is still awaiting a killer app that proves the superiority of its

Kieron O'Hara; Harith Alani; Yannis Kalfoglou; Nigel Shadbolt

23

Improving Web Spam Classification using Rank-time Features  

Microsoft Academic Search

In this paper, we study the classification of web spam. Web spam refers to pages that use techniques to mislead search engines into assigning them higher rank, thus increasing their site traffic. Our contributions are two fold. First, we find that the method of dataset construction is crucial for accurate spam classification and we note that this problem occurs generally

Krysta Marie Svore; Qiang Wu; Chris J. C. Burges; Aaswath Raman

2007-01-01

24

ADAM: Web Anomaly Detection Assistant Based on Feature Matrix  

Microsoft Academic Search

Importance of web security cannot be overemphasized in the era of web-based economy. Although anomaly detection has long been considered a promising alternative to signature-based misuse detection technique, most studies to date used either small scale or artificially generated attack data. In this paper, based on security analysis applied on anonymous www.microsoft.com log of about 250 GB, we propose Anomaly

Sung Deok Cha; Junsup Lee; Sangrok Kim; Sanghyun Cho

2009-01-01

25

Endoplasmic reticulum stress and N-glycosylation modulate expression of WFS1 protein  

Microsoft Academic Search

Mutations of the WFS1 gene are responsible for two hereditary diseases, Wolfram syndrome and low frequency sensorineural hearing loss. The WFS1 protein is a glycoprotein located in the endoplasmic reticulum (ER) membrane but its function is poorly understood. Herein we show WFS1 mRNA and protein levels in pancreatic islets to be increased with ER-stress inducers, thapsigargin and dithiothreitol. Another ER-stress

Suguru Yamaguchi; Hisamitsu Ishihara; Akira Tamura; Takahiro Yamada; Rui Takahashi; Daisuke Takei; Hideki Katagiri; Yoshitomo Oka

2004-01-01

26

The Noise Reduction Method of Web Pages Based on Image Features  

Microsoft Academic Search

Same layer Webpage have similar presentation styles and noise blocks. The first step of data mining is to remove noise blocks from Web pages. Different from traditional similarity measurement method based on DOM trees, a noise removal method based on image features is proposed in this paper. In this method, Web pages are processed as images. And then, all of

Haitao Yao; Zhiyi Yin; Fuxi Zhu; Changsheng Gong

2009-01-01

27

Endoplasmic reticulum stress and N-glycosylation modulate expression of WFS1 protein.  

PubMed

Mutations of the WFS1 gene are responsible for two hereditary diseases, Wolfram syndrome and low frequency sensorineural hearing loss. The WFS1 protein is a glycoprotein located in the endoplasmic reticulum (ER) membrane but its function is poorly understood. Herein we show WFS1 mRNA and protein levels in pancreatic islets to be increased with ER-stress inducers, thapsigargin and dithiothreitol. Another ER-stress inducer, the N-glycosylation inhibitor tunicamycin, also raised WFS1 mRNA but not protein levels. Site-directed mutagenesis showed both Asn-663 and Asn-748 to be N-glycosylated in mouse WFS1 protein. The glycosylation-defective WFS1 protein, in which Asn-663 and Asn-748 had been substituted with aspartate, exhibited an increased protein turnover rate. Consistent with this, the WFS1 protein was more rapidly degraded in the presence of tunicamycin. These data indicate that ER-stress and N-glycosylation play important roles in WFS1 expression and stability, and also suggest regulatory roles for this protein in ER-stress induced cell death. PMID:15522226

Yamaguchi, Suguru; Ishihara, Hisamitsu; Tamura, Akira; Yamada, Takahiro; Takahashi, Rui; Takei, Daisuke; Katagiri, Hideki; Oka, Yoshitomo

2004-12-01

28

Development of a Web Geological Feature Server (WGFS) for sharing and querying of 3D objects  

Microsoft Academic Search

In order to adequately fulfil specific requirements related to spatial database integration with 3D modeling tools, this paper\\u000a presents the development of a generic and open system architecture called Web Geological Feature Server (WGFS). WGFS provides\\u000a direct access through Web services to 3D geological models. WGFS is based on a three-tier architecture: a client (Gocad),\\u000a an application server (Apache Tomcat

Jacynthe Pouliot; Thierry Badard; Etienne Desgagné; Karine Bédard; Vincent Thomas

29

Topic-Based Website Feature Analysis for Enterprise Search from the Web  

Microsoft Academic Search

Efficient and accurate enterprise search is a challenging and important problem for specified resources available on the web.\\u000a Domain-specific enterprise websites are similar in the topic structures and textual contents. Considering the semantic information\\u000a of website content terms, a novel website feature vector modelling method representing website topic were proposed on the\\u000a basis of vector space model. The feature vector

Baoli Dong; Huimei Liu; Zhaoyong Hou; Xizhe Liu

2006-01-01

30

Automatic search of geospatial features for disaster and emergency management  

NASA Astrophysics Data System (ADS)

Although the fast development of OGC (Open Geospatial Consortium) WFS (Web Feature Service) technologies has undoubtedly improved the sharing and synchronization of feature-level geospatial information across diverse resources, literature shows that there are still apparent limitations in the current implementation of OGC WFSs. Currently, the implementation of OGC WFSs only emphasizes syntactic data interoperability via standard interfaces and cannot resolve semantic heterogeneity problems in geospatial data sharing. To help emergency responders and disaster managers find new ways of efficiently searching for needed geospatial information at the feature level, this paper aims to propose a framework for automatic search of geospatial features using Geospatial Semantic Web technologies and natural language interfaces. We focus on two major tasks: (1) intelligent geospatial feature retrieval using Geospatial Semantic Web technologies; (2) a natural language interface to a geospatial knowledge base and web feature services over the Semantic Web. Based on the proposed framework we implemented a prototype. Results show that it is practical to directly discover desirable geospatial features from multiple semantically heterogeneous sources using Geospatial Semantic Web technologies and natural language interfaces.

Zhang, Chuanrong; Zhao, Tian; Li, Weidong

2010-12-01

31

World Wide Web Based Image Search Engine Using Text and Image Content Features  

NASA Astrophysics Data System (ADS)

Using both text and image content features, a hybrid image retrieval system for Word Wide Web is developed in this paper. We first use a text-based image meta-search engine to retrieve images from the Web based on the text information on the image host pages to provide an initial image set. Because of the high-speed and low cost nature of the text-based approach, we can easily retrieve a broad coverage of images with a high recall rate and a relatively low precision. An image content based ordering is then performed on the initial image set. All the images are clustered into different folders based on the image content features. In addition, the images can be re-ranked by the content features according to the user feedback. Such a design makes it truly practical to use both text and image content for image retrieval over the Internet. Experimental results confirm the efficiency of the system.

Luo, Bo; Wang, Xiaogang; Tang, Xiaoou

2003-01-01

32

Internet-Based Weight Control: The Relationship Between Web Features and Weight Loss  

PubMed Central

Abstract Internet-based weight control programs have been showing promising results; however, as of yet, it is unclear which website components are critical for producing and maintaining weight loss. The aim of this study is to examine the utilization patterns of a weight control website and the relationship of the Web features to weight loss and maintenance. One hundred and twenty three (N?=?123) participants took part in a 12-month behavioral weight control program over the Internet and their website utilization patterns were monitored. When examining the clustering of Web feature utilization and weight loss, the “feedback” factor (progress charts, physiological calculators, and past journals) was the best predictor of weight loss during the treatment period (baseline to 6 months), while the “social support” factor (Web chats and biographical information/e-mail addresses of participants) was the best predictor during maintenance. Weight loss in an online weight control program was related to dynamic Web features that provided feedback, support, and motivation to participants.

Harvey-Berino, Jean; Ashikaga, Takamaru; Thomas, Colleen S.; Micco, Nicci

2008-01-01

33

Internet-based weight control: the relationship between web features and weight loss.  

PubMed

Internet-based weight control programs have been showing promising results; however, as of yet, it is unclear which website components are critical for producing and maintaining weight loss. The aim of this study is to examine the utilization patterns of a weight control website and the relationship of the Web features to weight loss and maintenance. One hundred and twenty three (N = 123) participants took part in a 12-month behavioral weight control program over the Internet and their website utilization patterns were monitored. When examining the clustering of Web feature utilization and weight loss, the "feedback" factor (progress charts, physiological calculators, and past journals) was the best predictor of weight loss during the treatment period (baseline to 6 months), while the "social support" factor (Web chats and biographical information/e-mail addresses of participants) was the best predictor during maintenance. Weight loss in an online weight control program was related to dynamic Web features that provided feedback, support, and motivation to participants. PMID:18954247

Krukowski, Rebecca A; Harvey-Berino, Jean; Ashikaga, Takamaru; Thomas, Colleen S; Micco, Nicci

2008-10-01

34

Web Services at the National Oceanic and Atmospheric Administration (NOAA) National Climatic Data Center (NCDC)  

NASA Astrophysics Data System (ADS)

NOAA's National Climatic Data Center (NCDC) currently archives over 1.5 petabytes of climatological data from various networks and sources including in-situ, numerical models, radar and satellite. Access to these datasets is evolving from interactive web interfaces utilizing database technology to standardized web services in a Service Oriented Architecture (SOA). NCDC is currently offering several web services using Simple Object Access Protocol (SOAP), XML over Representational State Transfer (REST/XML), Open Geospatial Consortium (OGC) Web Map Service (WMS) / Web Feature Service (WFS) / Web Coverage Service (WCS) and OPeNDAP web service protocols. These services offer users a direct connection between their client applications and NCDC data servers. In addition, users may embed access to the services in custom applications to efficiently navigate and subset data in an automated fashion. NCDC currently provides gridded numerical model data through a THREDDS Data Server and GrADS Data Server which offers OPeNDAP and WCS access. In-situ network metadata are available through WMS and WFS while the corresponding time-series data are accessible through SOAP and REST web services. These in-situ services are a part of the Consortium of Universities for the Advancement of Hydrologic Science (CUAHSI) WaterOneFlow services, a consolidated access system for hydrologic data, and comply with the WaterOneFlow specifications. NCDC's Severe Weather Data Inventory (SWDI), which provides user access to archives of several datasets critical to the detection and evaluation of severe weather, is also accessible through REST/XML services. Providing cataloging, access and search capabilities for many of NCDC's datasets using community driven standards is a top priority for the ever increasing data volumes being archived at NCDC. Providing interoperable access is critical to supporting data stewardship across multiple scientific disciplines and user types. This demonstration will showcase NCDC's latest work towards standardized web services with both server and client examples.

Ansari, S.; Baldwin, R.; Del Greco, S.; Lott, N.; Rutledge, G.

2007-12-01

35

BPELPower—A BPEL execution engine for geospatial web services  

NASA Astrophysics Data System (ADS)

The Business Process Execution Language (BPEL) has become a popular choice for orchestrating and executing workflows in the Web environment. As one special kind of scientific workflow, geospatial Web processing workflows are data-intensive, deal with complex structures in data and geographic features, and execute automatically with limited human intervention. To enable the proper execution and coordination of geospatial workflows, a specially enhanced BPEL execution engine is required. BPELPower was designed, developed, and implemented as a generic BPEL execution engine with enhancements for executing geospatial workflows. The enhancements are especially in its capabilities in handling Geography Markup Language (GML) and standard geospatial Web services, such as the Web Processing Service (WPS) and the Web Feature Service (WFS). BPELPower has been used in several demonstrations over the decade. Two scenarios were discussed in detail to demonstrate the capabilities of BPELPower. That study showed a standard-compliant, Web-based approach for properly supporting geospatial processing, with the only enhancement at the implementation level. Pattern-based evaluation and performance improvement of the engine are discussed: BPELPower directly supports 22 workflow control patterns and 17 workflow data patterns. In the future, the engine will be enhanced with high performance parallel processing and broad Web paradigms.

Yu, Genong (Eugene); Zhao, Peisheng; Di, Liping; Chen, Aijun; Deng, Meixia; Bai, Yuqi

2012-10-01

36

Optical designs of the LGS WFS system for GMT-LTAO  

NASA Astrophysics Data System (ADS)

The Laser Tomographic Adaptive Optics system for Giant Magellan Telescope (GMT) uses a single conjugated deformable mirror, the segmented Adaptive Secondary Mirror (ASM), to correct atmospheric wavefront aberrations with the help of a constellation of six laser beacons equally spaced on the sky. We will present different approaches for the design of the Laser Guide Star (LGS) Wave Front Sensor (WFS) system for GMT to cover all sodium emission altitudes and telescope elevations, from 80 km to 200 km range and how the preliminary design was derived from these approaches. The designed LGS WFS system includes a defocus-compensation mechanism working with a simple zooming optics to achieve the pupil image with constant pupil size, nearly constant wavefront correction, as well as pupil distortion correction. Either a trombone-mirror structure or a direct LGS-WFS translation is used for the defocus compensation, when conjugating the LGS altitudes in the sky. In the designs, a zooming collimator images the ASM in the GMT at the exit pupil of the LGS WFS system, where the designed lenslet-array is tailored for the selected CCD format for the required plate scale on the sky. Additionally, we have proposed a novel and simple solution for pupilimage segmentation when working with smaller CCD arrays. This novel solution consists of a single multi-aperture blaze grating for pupil segmentation in the system.

Wang, Min; Uhlendorf, Kristina; Jones, Damien; Côté, Patrice; Châteauneuf, François; Gauvin, Jonny; Conan, Rodolphe; Espeland, Brady

2012-07-01

37

Expression of the diabetes risk gene wolframin (WFS1) in the human retina  

PubMed Central

Wolfram syndrome 1 (WFS1, OMIM 222300), a rare genetic disorder characterized by optic nerve atrophy, deafness, diabetes insipidus and diabetes mellitus, is caused by mutations of WFS1, encoding WFS1/wolframin. Non-syndromic WFS1 variants are associated with the risk of diabetes mellitus due to altered function of wolframin in pancreatic islet cells, expanding the importance of wolframin. This study extends a previous report for the monkey retina, using immunohistochemistry to localize wolframin on cryostat and paraffin sections of human retina. In addition, the human retinal pigment epithelial (RPE) cell line termed ARPE-19 and retinas from both pigmented and albino mice were studied to assess wolframin localization. In the human retina, wolframin was expressed in retinal ganglion cells, optic axons and the proximal optic nerve. Wolframin expression in the human retinal pigment epithelium (RPE) was confirmed with intense cytoplasmic labeling in ARPE-19 cells. Strong labeling of the RPE was also found in the albino mouse retina. Cryostat sections of the mouse retina showed a more extended pattern of wolframin labeling, including the inner nuclear layer (INL) and photoreceptor inner segments, confirming the recent report of Kawano et al. (J. Comp. Neurol. 2008: 510, 1-23). Absence of these cells in the human specimens despite the use of human-specific antibodies to wolframin may be related to delayed fixation. Loss of wolframin function in RGCs and the unmyelinated portion of retinal axons could explain optic nerve atrophy in Wolfram Syndrome 1.

Schmidt-Kastner, Rainald; Kreczmanski, Pawel; Preising, Markus; Diederen, Roselie; Schmitz, Christoph; Reis, Danielle; Blanks, Janet; Dorey, C. Kathleen

2009-01-01

38

What new mothers' favorite web sites and features tell us about designing web-based health promotion: a content analysis.  

PubMed

Abstract Objective: Unmet health needs experienced by new mothers may potentially be reduced by the use of Internet-based information, advice, decision support, and social networking. New mothers' Web site preferences must be understood in order to develop successful Internet-delivered healthcare information. The purpose of this study is to determine the Web site preferences of new mothers in order to better design health resources distributed through the Internet. Materials and Methods: Data were derived from two open-ended questions in a larger survey of new mothers of varying incomes and racial/ethnic groups (n=145). The questions focused on mothers' favorite Web sites and their favorite aspect of the Web sites. Content analysis was used to condense data into descriptive categories. Results: Mothers most frequently chose commercial search engines, followed by social networking sites, as their favorite Web sites. Mothers' most frequently mentioned favorite attributes of the Web sites were, first, the ability to interact with other users, and then ease of navigation, access, and use. Except for a difference in favorite Web site associated with maternal age, Web sites and their most liked attributes did not differ by demographic characteristics. Conclusions: New mothers' Web site preferences offer preliminary guidance for designers of e-health resources for this population. An expanded survey with more detailed questions about preferences and devices would further refine this knowledge base. PMID:24053113

Nellsch, Elise R; Walker, Lorraine O; Xie, Bo; Vaughan, Misha W

2013-09-21

39

Testing of diabetes-associated WFS1 polymorphisms in the Diabetes Prevention Program  

PubMed Central

Aims/hypothesis Wolfram syndrome (diabetes insipidus, diabetes mellitus, optic atrophy and deafness) is caused by mutations in the WFS1 gene. Recently, single nucleotide polymorphisms (SNPs) in WFS1 have been reproducibly associated with type 2 diabetes. We therefore examined the effects of these variants on diabetes incidence and response to interventions in the Diabetes Prevention Program (DPP), in which a lifestyle intervention or metformin treatment was compared with placebo. Methods We genotyped the WFS1 SNPs rs10010131, rs752 854 and rs734312 (H611R) in 3,548 DPP participants and performed Cox regression analysis using genotype, intervention and their interactions as predictors of diabetes incidence. We also evaluated the effect of these SNPs on insulin resistance and beta cell function at 1 year. Results Although none of the three SNPs was associated with diabetes incidence in the overall cohort, white homozygotes for the previously reported protective alleles appeared less likely to develop diabetes in the lifestyle arm. Examination of the publicly available Diabetes Genetics Initiative genome-wide association dataset revealed that rs10012946, which is in strong linkage disequilibrium with the three WFS1 SNPs (r2=0.88–1.0), was associated with type 2 diabetes (allelic odds ratio 0.85, 95% CI 0.75–0.97, p=0.026). In the DPP, we noted a trend towards increased insulin secretion in carriers of the protective variants, although for most SNPs this was seen as compensatory for the diminished insulin sensitivity. Conclusions/interpretation The previously reported protective effect of select WFS1 alleles may be magnified by a lifestyle intervention. These variants appear to confer an improvement in beta cell function.

Florez, J. C.; Jablonski, K. A.; McAteer, J.; Sandhu, M. S.; Wareham, N. J.; Barroso, I.; Franks, P. W.; Altshuler, D.; Knowler, W. C.

2008-01-01

40

Large scale near-duplicate celebrity web images retrieval using visual and textual features.  

PubMed

Near-duplicate image retrieval is a classical research problem in computer vision toward many applications such as image annotation and content-based image retrieval. On the web, near-duplication is more prevalent in queries for celebrities and historical figures which are of particular interest to the end users. Existing methods such as bag-of-visual-words (BoVW) solve this problem mainly by exploiting purely visual features. To overcome this limitation, this paper proposes a novel text-based data-driven reranking framework, which utilizes textual features and is combined with state-of-art BoVW schemes. Under this framework, the input of the retrieval procedure is still only a query image. To verify the proposed approach, a dataset of 2 million images of 1089 different celebrities together with their accompanying texts is constructed. In addition, we comprehensively analyze the different categories of near duplication observed in our constructed dataset. Experimental results on this dataset show that the proposed framework can achieve higher mean average precision (mAP) with an improvement of 21% on average in comparison with the approaches based only on visual features, while does not notably prolong the retrieval time. PMID:24163631

Qiao, Fengcai; Wang, Cheng; Zhang, Xin; Wang, Hui

2013-09-14

41

Large Scale Near-Duplicate Celebrity Web Images Retrieval Using Visual and Textual Features  

PubMed Central

Near-duplicate image retrieval is a classical research problem in computer vision toward many applications such as image annotation and content-based image retrieval. On the web, near-duplication is more prevalent in queries for celebrities and historical figures which are of particular interest to the end users. Existing methods such as bag-of-visual-words (BoVW) solve this problem mainly by exploiting purely visual features. To overcome this limitation, this paper proposes a novel text-based data-driven reranking framework, which utilizes textual features and is combined with state-of-art BoVW schemes. Under this framework, the input of the retrieval procedure is still only a query image. To verify the proposed approach, a dataset of 2 million images of 1089 different celebrities together with their accompanying texts is constructed. In addition, we comprehensively analyze the different categories of near duplication observed in our constructed dataset. Experimental results on this dataset show that the proposed framework can achieve higher mean average precision (mAP) with an improvement of 21% on average in comparison with the approaches based only on visual features, while does not notably prolong the retrieval time.

Wang, Cheng; Zhang, Xin; Wang, Hui

2013-01-01

42

Identification of novel mutations of the WFS1 gene in Brazilian patients with Wolfram syndrome  

Microsoft Academic Search

Objective: Wolfram syndrome (WS) is a rare, progressive, neurodegenerative disorder with an autosomal recessive pattern of inheritance. The gene for WS, WFS1, was identified on chromosome 4p16 and most WS patients carry mutations in this gene. However, some studies have provided evidence for genetic heterogeneity and the genotype-phenotype relationships are not clear. Our aim was to ascertain the spectrum of

Maria Regina R Gasparin; Felipe Crispim; Silvia L Paula; Maria Beatriz S Freire; Ivaldir S Dalbosco; Thais Della Manna; Joao Eduardo N Salles; Alexis Guedes; Joao M Marcantonio; Marcio Gambini; Camila P Salim; Regina S Moises

2009-01-01

43

Relation of exploratory behaviour to plasma corticosterone and Wfs1 gene expression in Wistar rats.  

PubMed

Male Wistar rats exhibit significant variations in exploratory behaviour in the elevated plus-maze (EPM) model of anxiety. We have now investigated the relation between exploratory behaviour and levels of corticosterone and systemic oxidative stress. Also, the expression levels of endocannabinoid-related and wolframin (Wfs1) genes were measured in the forebrain structures. The rats were divided into high, intermediate and low exploratory activity groups. Exposure to EPM significantly elevated the serum levels of corticosterone in all rats, but especially in the high exploratory group. Oxidative stress indices and expression of endocannabinoid-related genes were not significantly affected by exposure to EPM. Wfs1 mRNA level was highly dependent on exploratory behaviour of animals. In low exploratory activity rats, Wfs1 gene expression was reduced in the temporal lobe, whereas in high exploratory activity group it was reduced in the mesolimbic area and hippocampus. Altogether, present study indicates that in high exploratory activity rats, the activation of brain areas related to novelty seeking is apparent, whereas in low exploratory activity group the brain structures linked to anxiety are activated. PMID:19346280

Sütt, S; Raud, S; Abramov, U; Innos, J; Luuk, H; Plaas, M; Kõks, S; Zilmer, K; Mahlapuu, R; Zilmer, M; Vasar, E

2009-04-03

44

LGS WFS on ELTs II: Impact of the sodium layer fluctuations  

NASA Astrophysics Data System (ADS)

The application of laser guide stars to large aperture telescopes has spurred many new studies in wavefront sensing. For the particular case of the Shack-Hartmann wavefront sensor (WFS), wavefront sensing is prone to new sources of errors not previously considered. The primary source of error is spot elongation resulting from the resolution of the finite thickness of the sodium layer. The elongation spreads the signal over several pixels, resulting in a decrease of the signal to noise ratio and an increase of non-linearity. Also, the SHWFS performance becomes sensitive to temporal and spatial variations of the density of the sodium atoms. Among the different centroid algorithms to be used with this WFS, the most powerful methods (correlation, matched filter, WCoG) require a reference. Although straightforward for a point source, the use of a resolved laser guide star is more cumbersome because the sodium layer variations affect their performance. In this paper we look at the impact of the sodium layer fluctuations and the reference choice on the performance of the WFS. We consider real as well as analytical non-symmetric profiles and investigate errors both at the subaperture level and at the wavefront reconstruction level. We conclude on the compromise between the use of the best possible reference versus the difficulty of implementation.

Thomas, S.; Muller, N.; Michau, V.; Fusco, T.; Gavel, D.

2011-09-01

45

kmer-SVM: a web server for identifying predictive regulatory sequence features in genomic data sets.  

PubMed

Massively parallel sequencing technologies have made the generation of genomic data sets a routine component of many biological investigations. For example, Chromatin immunoprecipitation followed by sequence assays detect genomic regions bound (directly or indirectly) by specific factors, and DNase-seq identifies regions of open chromatin. A major bottleneck in the interpretation of these data is the identification of the underlying DNA sequence code that defines, and ultimately facilitates prediction of, these transcription factor (TF) bound or open chromatin regions. We have recently developed a novel computational methodology, which uses a support vector machine (SVM) with kmer sequence features (kmer-SVM) to identify predictive combinations of short transcription factor-binding sites, which determine the tissue specificity of these genomic assays (Lee, Karchin and Beer, Discriminative prediction of mammalian enhancers from DNA sequence. Genome Res. 2011; 21:2167-80). This regulatory information can (i) give confidence in genomic experiments by recovering previously known binding sites, and (ii) reveal novel sequence features for subsequent experimental testing of cooperative mechanisms. Here, we describe the development and implementation of a web server to allow the broader research community to independently apply our kmer-SVM to analyze and interpret their genomic datasets. We analyze five recently published data sets and demonstrate how this tool identifies accessory factors and repressive sequence elements. kmer-SVM is available at http://kmersvm.beerlab.org. PMID:23771147

Fletez-Brant, Christopher; Lee, Dongwon; McCallion, Andrew S; Beer, Michael A

2013-06-14

46

kmer-SVM: a web server for identifying predictive regulatory sequence features in genomic data sets  

PubMed Central

Massively parallel sequencing technologies have made the generation of genomic data sets a routine component of many biological investigations. For example, Chromatin immunoprecipitation followed by sequence assays detect genomic regions bound (directly or indirectly) by specific factors, and DNase-seq identifies regions of open chromatin. A major bottleneck in the interpretation of these data is the identification of the underlying DNA sequence code that defines, and ultimately facilitates prediction of, these transcription factor (TF) bound or open chromatin regions. We have recently developed a novel computational methodology, which uses a support vector machine (SVM) with kmer sequence features (kmer-SVM) to identify predictive combinations of short transcription factor-binding sites, which determine the tissue specificity of these genomic assays (Lee, Karchin and Beer, Discriminative prediction of mammalian enhancers from DNA sequence. Genome Res. 2011; 21:2167–80). This regulatory information can (i) give confidence in genomic experiments by recovering previously known binding sites, and (ii) reveal novel sequence features for subsequent experimental testing of cooperative mechanisms. Here, we describe the development and implementation of a web server to allow the broader research community to independently apply our kmer-SVM to analyze and interpret their genomic datasets. We analyze five recently published data sets and demonstrate how this tool identifies accessory factors and repressive sequence elements. kmer-SVM is available at http://kmersvm.beerlab.org.

Fletez-Brant, Christopher; Lee, Dongwon; McCallion, Andrew S.; Beer, Michael A.

2013-01-01

47

NOBAI: a web server for character coding of geometrical and statistical features in RNA structure  

Microsoft Academic Search

The Numeration of Objects in Biology: Alignment Inferences (NOBAI) web server provides a web interface to the applications in the NOBAI software package. This software codes topological and ther- modynamic information related to the secondary structure of RNA molecules as multi-state phyloge- netic characters, builds character matrices directly in NEXUS format and provides sequence randomiza- tion options. The web server

Vegeir Knudsen; Gustavo Caetano-anollés

2008-01-01

48

A Web-Based Self-Testing System with Some Features of Web 2.0: Design and Primary Implementation  

ERIC Educational Resources Information Center

Self-testing is a means to check learning effect. Besides time-space restriction, there are many deficiencies in traditional offline self-testing. With the development of information technology, learners can have self-testing on the Internet. Self-testing on Internet, namely, web-based self-testing, overcomes time-space limitation of traditional…

Liu, Xiaolei; Liu, Haitao; Bao, Zhen; Ju, Bo; Wang, Zhenghong

2010-01-01

49

PromBase: a web resource for various genomic features and predicted promoters in prokaryotic genomes  

PubMed Central

Background As more and more genomes are being sequenced, an overview of their genomic features and annotation of their functional elements, which control the expression of each gene or transcription unit of the genome, is a fundamental challenge in genomics and bioinformatics. Findings Relative stability of DNA sequence has been used to predict promoter regions in 913 microbial genomic sequences with GC-content ranging from 16.6% to 74.9%. Irrespective of the genome GC-content the relative stability based promoter prediction method has already been proven to be robust in terms of recall and precision. The predicted promoter regions for the 913 microbial genomes have been accumulated in a database called PromBase. Promoter search can be carried out in PromBase either by specifying the gene name or the genomic position. Each predicted promoter region has been assigned to a reliability class (low, medium, high, very high and highest) based on the difference between its average free energy and the downstream region. The recall and precision values for each class are shown graphically in PromBase. In addition, PromBase provides detailed information about base composition, CDS and CG/TA skews for each genome and various DNA sequence dependent structural properties (average free energy, curvature and bendability) in the vicinity of all annotated translation start sites (TLS). Conclusion PromBase is a database, which contains predicted promoter regions and detailed analysis of various genomic features for 913 microbial genomes. PromBase can serve as a valuable resource for comparative genomics study and help the experimentalist to rapidly access detailed information on various genomic features and putative promoter regions in any given genome. This database is freely accessible for academic and non- academic users via the worldwide web http://nucleix.mbu.iisc.ernet.in/prombase/.

2011-01-01

50

BiDaS: a web-based Monte Carlo BioData Simulator based on sequence/feature characteristics  

PubMed Central

BiDaS is a web-application that can generate massive Monte Carlo simulated sequence or numerical feature data sets (e.g. dinucleotide content, composition, transition, distribution properties) based on small user-provided data sets. BiDaS server enables users to analyze their data and generate large amounts of: (i) Simulated DNA/RNA and aminoacid (AA) sequences following practically identical sequence and/or extracted feature distributions with the original data. (ii) Simulated numerical features, presenting identical distributions, while preserving the exact 2D or 3D between-feature correlations observed in the original data sets. The server can project the provided sequences to multidimensional feature spaces based on: (i) 38 DNA/RNA features describing conformational and physicochemical nucleotide sequence features from the B-DNA-VIDEO database, (ii) 122 DNA/RNA features based on conformational and thermodynamic dinucleotide properties from the DiProDB database and (iii) Pseudo-aminoacid composition of the initial sequences. To the best of our knowledge, this is the first available web-server that allows users to generate vast numbers of biological data sets with realistic characteristics, while keeping between-feature associations. These data sets can be used for a wide variety of current biological problems, such as the in-depth study of gene, transcript, peptide and protein groups/families; the creation of large data sets from just a few available members and the strengthening of machine learning classifiers. All simulations use advanced Monte Carlo sampling techniques. The BiDaS web-application is available at http://bioserver-3.bioacademy.gr/Bioserver/BiDaS/.

Paraskevopoulou, Maria D.; Vlachos, Ioannis S.; Athanasiadis, Emmanouil; Spyrou, George

2013-01-01

51

Design Planning in End-User Web Development: Gender, Feature Exploration and Feelings of Success  

Microsoft Academic Search

We report an empirical study of nonprogrammers who built a database-centered web application using an end-user web development tool. Half of the users spent time planning their project by creating a concept map before starting the programming; across planning conditions, half of the users were males and half female. Participants who did concept mapping or who were male were more

Mary Beth Rosson; Hansa Sinha; Tisha Edor

2010-01-01

52

Using Self Organizing Feature Maps to Acquire Knowledge about Visitor Behavior in a Web Site  

Microsoft Academic Search

When a user visits a web site, important information con- cerning his\\/her preferences and behavior is stored implicitly in the asso- ciated log files. This information can be revealed by using data mining techniques and can be used in order to improve both, content and struc- ture of the respective web site. From the set of possible that define the

Juan D. Velásquez; Hiroshi Yasuda; Terumasa Aoki; Richard Weber; Eduardo S. Vera

2003-01-01

53

Multiple sets of features for automatic genre classification of web documents  

Microsoft Academic Search

With the increase of information on the Web, it is difficult to find desired information quickly out of the documents retrieved by a search engine. One way to solve this problem is to classify web documents according to various criteria. Most document classification has been focused on a subject or a topic of a document. A genre or a style

Chul Su Lim; Kong Joo Lee; Gil-chang Kim

2005-01-01

54

Evaluating Web Sites Featuring Primary Sources on United States History 61  

Microsoft Academic Search

Most library Web sites offer lists of recommended Web sites for primary sources with only cursory summaries of the sites. While many of the resources listed are outstanding, too many are dubious in quality, often referring to dead URLs or sites containing no information on their sponsor, source of material, or other information needed to evaluate the accuracy of the

Robert J. Congleton

2005-01-01

55

Wolfram syndrome 1 (Wfs1) mRNA expression in the normal mouse brain during postnatal development.  

PubMed

Wolfram syndrome is a rare genetic disorder accompanying diabetes insipidus, sensorineural hearing loss, neurological complications, and psychiatric illness. This syndrome has been attributed to mutations in the WFS1 gene. In this study, we made a detailed histochemical analysis of the distribution of Wfs1 mRNA in the brain of developing mice. There were three patterns of change in the strength of Wfs1 mRNA signals from birth to early adulthood. In type 1, the signals were weak or absent in neonates but strong or moderate in young adults. This pattern was observed in the CA1 field, parasubiculum, and entorhinal cortex. In type 2, the signals were of a relatively constant strength during development. This pattern was seen in limbic structures (e.g. subiculum and central amygdaloid nucleus) and brainstem nuclei (e.g. facial and chochlear nuclei). In type 3, the signals peaked in the second week of age. This pattern was observed in the thalamic reticular nucleus. Thus, Wfs1 mRNA was widely distributed in the normal mouse brain during postnatal development. This evidence may provide clues as to the physiological role of the Wfs1 gene in the central nervous system, and help to explain endocrinological, otological, neurological, and psychiatric symptoms in Wolfram syndrome patients. PMID:19428703

Kawano, June; Fujinaga, Ryutaro; Yamamoto-Hanada, Kiwako; Oka, Yoshitomo; Tanizawa, Yukio; Shinoda, Koh

2009-03-20

56

User-Centered Design Meets Feature-Driven Development: An Integrating Approach for Developing the Web Application myPIM  

Microsoft Academic Search

In this paper we show how a user-centered design (UCD) method can be successfully combined with an agile software development\\u000a approach, namely feature-driven development (FDD), to develop the web-based information management system myPIM. This system\\u000a supports users’ workflow requirements in research and teaching\\/learning contexts. It provides bookmark, file, and reference\\u000a archives, as well as possibilities for exchanging information with colleagues

Torsten Krohn; Martin Christof Kindsmüller; Michael Herczeg

2009-01-01

57

Web image clustering by consistent utilization of visual features and surrounding texts  

Microsoft Academic Search

Image clustering, an important technology for image processing, has been actively researched for a long period of time. Especially in recent years, with the explosive growth of the Web, image clustering has even been a critical technology to help users digest the large amount of online visual information. However, as far as we know, many previous works on image clustering

Bin Gao; Tie-Yan Liu; Tao Qin; Xin Zheng; Qian-Sheng Cheng; Wei-Ying Ma

2005-01-01

58

Trends in Culturally Relevant Interface Design Features for Latino Web Site Users  

ERIC Educational Resources Information Center

|There is a lack of published research on designing Web-based instruction for the adult U.S. Latino population. Instructional designers need guidance on how to design culturally relevant learning environments for this audience, particularly for Latino people from Mexican heritage. The authors used content analysis to investigate the extent to…

Sachau, Lori L.; Hutchinson, Susan R.

2012-01-01

59

Evidence of quality of textual features on the web 2.0  

Microsoft Academic Search

The growth of popularity of Web 2.0 applications greatly increased the amount of social media content available on the Internet. However, the unsupervised, user-oriented nature of this source of information, and thus, its potential lack of quality, have posed a challenge to information retrieval (IR) services. Previous work focuses mostly only on tags, although a consensus about its effectiveness as

Flavio Figueiredo; Fabiano Belém; Henrique Pinto; Jussara M. Almeida; Marcos André Gonçalves; David Fernandes; Edleno Silva De Moura; Marco Cristo

2009-01-01

60

Diffusion of Courses with World Wide Web Features: Perceptions of Journalism and Mass Communication Program Administrators.  

ERIC Educational Resources Information Center

Research shows that educators at accredited journalism and mass communication programs in the United States agree that programs without a significant Web presence are ignoring the impact of technology on the field. A study utilized a cross-sectional survey design to assess the perceptions of college/university program top administrators concerning…

Sutherland, Patrick J.

61

Increasing the speed of Information Access on the Mobile web using HTML feature extraction  

Microsoft Academic Search

Motivated by the cumbersome process of extracting information from webpages as rendered on mobile device web browsers, this paper focuses on describing an alternative and promising approach to facilitating the process for users. We present early work-in-progress on a system that attempts to extract information sections of a webpage and presents the extracted sections first, with the remaining page following.

Andreas Komninos; Chris Milligan

62

PhenoDB: a new web-based tool for the collection, storage, and analysis of phenotypic features.  

PubMed

To interpret whole exome/genome sequence data for clinical and research purposes, comprehensive phenotypic information, knowledge of pedigree structure, and results of previous clinical testing are essential. With these requirements in mind and to meet the needs of the Centers for Mendelian Genomics project, we have developed PhenoDB (http://phenodb.net), a secure, Web-based portal for entry, storage, and analysis of phenotypic and other clinical information. The phenotypic features are organized hierarchically according to the major headings and subheadings of the Online Mendelian Inheritance in Man (OMIM®) clinical synopses, with further subdivisions according to structure and function. Every string allows for a free-text entry. All of the approximately 2,900 features use the preferred term from Elements of Morphology and are fully searchable and mapped to the Human Phenotype Ontology and Elements of Morphology. The PhenoDB allows for ascertainment of relevant information from a case in a family or cohort, which is then searchable by family, OMIM number, phenotypic feature, mode of inheritance, genes screened, and so on. The database can also be used to format phenotypic data for submission to dbGaP for appropriately consented individuals. PhenoDB was built using Django, an open source Web development tool, and is freely available through the Johns Hopkins McKusick-Nathans Institute of Genetic Medicine (http://phenodb.net). PMID:23378291

Hamosh, Ada; Sobreira, Nara; Hoover-Fong, Julie; Sutton, V Reid; Boehm, Corinne; Schiettecatte, François; Valle, David

2013-03-04

63

PhenoDB: A New Web-Based Tool for the Collection, Storage, and Analysis of Phenotypic Features  

PubMed Central

To interpret whole exome/genome sequence data for clinical and research purposes, comprehensive phenotypic information, knowledge of pedigree structure, and results of previous clinical testing are essential. With these requirements in mind and to meet the needs of the Centers for Mendelian Genomics project, we have developed PhenoDB (http://phenodb.net), a secure, Web-based portal for entry, storage, and analysis of phenotypic and other clinical information. The phenotypic features are organized hierarchically according to the major headings and subheadings of the Online Mendelian Inheritance in Man (OMIM®) clinical synopses, with further subdivisions according to structure and function. Every string allows for a free-text entry. All of the approximately 2,900 features use the preferred term from Elements of Morphology and are fully searchable and mapped to the Human Phenotype Ontology and Elements of Morphology. The PhenoDB allows for ascertainment of relevant information from a case in a family or cohort, which is then searchable by family, OMIM number, phenotypic feature, mode of inheritance, genes screened, and so on. The database can also be used to format phenotypic data for submission to dbGaP for appropriately consented individuals. PhenoDB was built using Django, an open source Web development tool, and is freely available through the Johns Hopkins McKusick-Nathans Institute of Genetic Medicine (http://phenodb.net).

Hamosh, Ada; Sobreira, Nara; Hoover-Fong, Julie; Sutton, V Reid; Boehm, Corinne; Schiettecatte, Francois; Valle, David

2013-01-01

64

G-OWS: the Grid-enabled Open-Geospatial Web Services Working Group  

NASA Astrophysics Data System (ADS)

The Grid-enabled Open-Geospatial Web Services (G-OWS) Working Group objectives and activities are presented and discussed. In this preliminary phase, the WG is comprised of the following EC-funded projects (FP6 and FP7): CYCLOPS (); GENESI DR (); DORII (). G-OWS main scopes are: • To address the OGF and GLite/EGEE standardization needs as far as the Earth and Space Science, GMES and INSPIRE Communities are concerned. • To establish an open forum to govern the implementation specification for OGC services on the GLite platform. In fact, this is important to allow effective grid-enabled implementations leveraging the GLite assets. Besides, the forum can play an important role to assure real interoperability among the different implementations. • To contribute to the OGC-OGF interoperability forum and experiments. The WG has worked for accomplishing the following principal tasks: • To release a standard GLite package consisting of the GLite implementation specifications and related reference implementations developed by the involved EC projects (i.e. Web Coverage Service: WCS; Web Processing Service: WPS; Web Feature Service: WFS; Catalog Service for Web: CSW; Sensor Observation Service: SOS). • To disseminate the WG activities. • To reach out to other European Projects and Communities and invite them to join the WG.

Nativi, S.; Verlato, M.; Pacini, F.; Pugliese, R.; Mazzetti, P.; Angelini, V.

2009-04-01

65

Vacuolar-type H+-ATPase V1A subunit is a molecular partner of Wolfram syndrome 1 (WFS1) protein, which regulates its expression and stability.  

PubMed

Wolfram syndrome is an autosomal recessive disorder characterized by neurodegeneration and diabetes mellitus. The gene responsible for the syndrome (WFS1) encodes an endoplasmic reticulum (ER)-resident transmembrane protein that also localizes to secretory granules in pancreatic beta cells. Although its precise functions are unknown, WFS1 protein deficiency affects the unfolded protein response, intracellular ion homeostasis, cell cycle progression and granular acidification. In this study, immunofluorescent and electron-microscopy analyses confirmed that WFS1 also localizes to secretory granules in human neuroblastoma cells. We demonstrated a novel interaction between WFS1 and the V1A subunit of the H(+) V-ATPase (proton pump) by co-immunoprecipitation in human embryonic kidney (HEK) 293 cells and with endogenous proteins in human neuroblastoma cells. We mapped the interaction to the WFS1-N terminal, but not the C-terminal domain. V1A subunit expression was reduced in WFS1 stably and transiently depleted human neuroblastoma cells and depleted NT2 (human neuron-committed teratocarcinoma) cells. This reduced expression was not restored by adenoviral overexpression of BiP (immunoglobulin-binding protein) to correct the ER stress. Protein stability assays demonstrated that the V1A subunit was degraded more rapidly in WFS1 depleted neuroblastoma cells compared with wild-type; however, proteosomal inhibition did not restore the expression of the V1A subunit. Cell cycle assays measuring p21(cip) showed reduced levels in WFS1 depleted cells, and an inverse association between p21(cip) expression and apoptosis. We conclude that WFS1 has a specific interaction with the V1A subunit of H(+) ATPase; this interaction may be important both for pump assembly in the ER and for granular acidification. PMID:23035048

Gharanei, Seley; Zatyka, Malgorzata; Astuti, Dewi; Fenton, Janine; Sik, Attila; Nagy, Zsuzsanna; Barrett, Timothy G

2012-10-03

66

Features Predicting Weight Loss in Overweight or Obese Participants in a Web-Based Intervention: Randomized Trial  

PubMed Central

Background Obesity remains a serious issue in many countries. Web-based programs offer good potential for delivery of weight loss programs. Yet, many Internet-delivered weight loss studies include support from medical or nutritional experts, and relatively little is known about purely web-based weight loss programs. Objective To determine whether supportive features and personalization in a 12-week web-based lifestyle intervention with no in-person professional contact affect retention and weight loss. Methods We assessed the effect of different features of a web-based weight loss intervention using a 12-week repeated-measures randomized parallel design. We developed 7 sites representing 3 functional groups. A national mass media promotion was used to attract overweight/obese Australian adults (based on body mass index [BMI] calculated from self-reported heights and weights). Eligible respondents (n = 8112) were randomly allocated to one of 3 functional groups: information-based (n = 183), supportive (n = 3994), or personalized-supportive (n = 3935). Both supportive sites included tools, such as a weight tracker, meal planner, and social networking platform. The personalized-supportive site included a meal planner that offered recommendations that were personalized using an algorithm based on a user’s preferences for certain foods. Dietary and activity information were constant across sites, based on an existing and tested 12-week weight loss program (the Total Wellbeing Diet). Before and/or after the intervention, participants completed demographic (including self-reported weight), behavioral, and evaluation questionnaires online. Usage of the website and features was objectively recorded. All screening and data collection procedures were performed online with no face-to-face contact. Results Across all 3 groups, attrition was high at around 40% in the first week and 20% of the remaining participants each week. Retention was higher for the supportive sites compared to the information-based site only at week 12 (P = .01). The average number of days that each site was used varied significantly (P = .02) and was higher for the supportive site at 5.96 (SD 11.36) and personalized-supportive site at 5.50 (SD 10.35), relative to the information-based site at 3.43 (SD 4.28). In total, 435 participants provided a valid final weight at the 12-week follow-up. Intention-to-treat analyses (using multiple imputations) revealed that there were no statistically significant differences in weight loss between sites (P = .42). On average, participants lost 2.76% (SE 0.32%) of their initial body weight, with 23.7% (SE 3.7%) losing 5% or more of their initial weight. Within supportive conditions, the level of use of the online weight tracker was predictive of weight loss (model estimate = 0.34, P < .001). Age (model estimate = 0.04, P < .001) and initial BMI (model estimate = -0.03, P < .002) were associated with frequency of use of the weight tracker. Conclusions Relative to a static control, inclusion of social networking features and personalized meal planning recommendations in a web-based weight loss program did not demonstrate additive effects for user weight loss or retention. These features did, however, increase the average number of days that a user engaged with the system. For users of the supportive websites, greater use of the weight tracker tool was associated with greater weight loss.

Freyne, Jill; Saunders, Ian; Berkovsky, Shlomo; Smith, Greg; Noakes, Manny

2012-01-01

67

A Geospatial Database that Supports Derivation of Climatological Features of Severe Weather  

NASA Astrophysics Data System (ADS)

The Severe Weather Data Inventory (SWDI) at NOAA's National Climatic Data Center (NCDC) provides user access to archives of several datasets critical to the detection and evaluation of severe weather. These datasets include archives of: · NEXRAD Level-III point features describing general storm structure, hail, mesocyclone and tornado signatures · National Weather Service Storm Events Database · National Weather Service Local Storm Reports collected from storm spotters · National Weather Service Warnings · Lightning strikes from Vaisala's National Lightning Detection Network (NLDN) SWDI archives all of these datasets in a spatial database that allows for convenient searching and subsetting. These data are accessible via the NCDC web site, Web Feature Services (WFS) or automated web services. The results of interactive web page queries may be saved in a variety of formats, including plain text, XML, Google Earth's KMZ, standards-based NetCDF and Shapefile. NCDC's Storm Risk Assessment Project (SRAP) uses data from the SWDI database to derive gridded climatology products that show the spatial distributions of the frequency of various events. SRAP also can relate SWDI events to other spatial data such as roads, population, watersheds, and other geographic, sociological, or economic data to derive products that are useful in municipal planning, emergency management, the insurance industry, and other areas where there is a need to quantify and qualify how severe weather patterns affect people and property.

Phillips, M.; Ansari, S.; Del Greco, S.

2007-12-01

68

Mutations in the WFS1 gene that cause low-frequency sensorineural hearing loss are small non-inactivating mutations  

Microsoft Academic Search

Hereditary hearing impairment is an extremely heterogeneous trait, with more than 70 identified loci. Only two of these loci are associated with an auditory phenotype that predominantly affects the low frequencies (DFNA1 and DFNA6\\/14). In this study, we have completed mutation screening of the WFS1 gene in eight autosomal dominant families and twelve sporadic cases in which affected persons have

Kim Cryns; Markus Pfister; Ronald J. E. Pennings; Steven J. H. Bom; Kris Flothmann; Goele Caethoven; Hannie Kremer; Isabelle Schatteman; Karen A. Köln; Tímea Tóth; Susan Kupka; Nikolaus Blin; Peter Nürnberg; Holger Thiele; Paul H. van de Heyning; William Reardon; Dafydd Stephens; Cor W. R. J. Cremers; Richard J. H. Smith; Guy Van Camp

2002-01-01

69

Development and performance of the EAGLE active optics LGS WFS refocusing system  

NASA Astrophysics Data System (ADS)

We designed, developed, and tested a Variable Curvature Mirror (VCM) as an active refocusing system for the Laser Guide Star (LGS) Wave Front Sensor (WFS) of the E-ELT EAGLE instrument [1]. This paper is the second of two from our team on this R&D activity: Hugot et al. this conf. [2] presented the mirror design and performance simulations. Here, we report on the fabrication integration, testing and performance of the VCM system. During this activity, we developed all necessary parts for the VCM system: a metallic mirror, its housing and mounts, a computer-controlled pressure system, an internal metrology, a testbench etc. The functional testing of the VCM system is successful: we can control the internal pressure to less than 1 mBar, and measure the mirror displacement with a 100 nm accuracy. The mirror displacement is a near-linear and well-simulated function of internal pressure for the desired range of focus. The intrinsic optical quality of the mirror meniscus is well within the specifications. Once mounted in its housing, we observe additional mechanical constraints for the current design that generate optical aberrations. We measured the amplitude of the Zernike modes, and we showed that the axisymetric terms display a variation trend very similar to simulations, with amplitude close to simulations. All these results are very promising for a design of focus compensation without any moving part.

Madec, Fabrice; Le Mignant, David; Chardin, Elodie; Hugot, Emmanuel; Mazzanti, Silvio; Gimenez, Jean-Luc; Ferrari, Marc; Moreaux, Gabriel; Vives, Sébastien; Cuby, Jean-Gabriel

2010-07-01

70

Wellness Partners: Design and Evaluation of a Web-Based Physical Activity Diary with Social Gaming Features for Adults  

PubMed Central

Background The United States is currently in an age of obesity and inactivity despite increasing public awareness and scientific knowledge of detrimental long-term health effects of this lifestyle. Behavior-tracking diaries offer an effective strategy for physical activity adherence and weight management. Furthermore, Web-based physical activity diaries can engage meaningful partners in people’s social networks through fun online gaming interactions and generate motivational mechanisms for effective behavioral change and positive health outcomes. Objective Wellness Partners (WP) is a Web-based intervention in the form of a physical activity diary with social networking and game features. Two versions were designed and developed for the purpose of this study—“Diary” only and “Diary+Game”. The objectives of this study included pilot testing the research process of this intervention design, implementation, evaluation, and exploring the effectiveness of social gaming features on adult participants’ physical activity and anthropometric measures. Methods We conducted a field experiment with randomized crossover design. Assessments occurred at baseline, first follow-up (FU, 5-8 weeks after using one version of WP), and second FU (5-8 weeks of using the other version of WP). In the control condition, participants started with the “Diary” version of WP while in the experimental condition, participants started with the “Diary+Game” version of WP. A total of 54 adults (egos) ages 44-88, and their family and friends (alters) ages 17-69 participated in the study in ego-network groups. Both egos and their alters completed online surveys about their exercise habits. In addition, egos completed anthropometric measurements of BMI, fat percentage, and fat mass by bioimpedance. Results From October 2009 to May 2010, flyers, emails, and Web advertisements yielded 335 volunteers who were screened. Rolling recruitment resulted in enrollment of 142 qualified participants in 54 ego-network groups, which were randomly assigned to a study condition. The final analytic sample included 87 individuals from 41 groups. Data were collected from December 2009 to August 2010, and data analysis was completed in 2011. Overall, the participants were given access to the intervention for 10-13 weeks. Statistical analysis suggested an increase in self-reported exercise frequency (mean days per week) from baseline (2.57, SD 1.92) to first FU (3.21, SD 1.74) in both conditions. Stronger effects were seen in the condition where Diary+Game was played first, especially in network groups with larger age variation between the alters and egos. Overall, the decrease in egos’ BMI was statistically significant from baseline to first FU, with greater decrease for those in the Diary+Game first condition (-0.26 vs -0.16 in the Diary first condition). Conclusions The Wellness Partners program increased physical activity among participants and resulted in health benefits among the egos. Web-based diary interventions designed with social gaming features hold potential to promote active lifestyles for middle-age adults and people in their social networks.

Wang, Hua; Spruijt-Metz, Donna; Jordan-Marsh, Maryalice; Valente, Thomas William

2013-01-01

71

Missense Variations of the Gene Responsible for Wolfram Syndrome ( WFS1\\/ wolframin) in Japanese: Possible Contribution of the Arg456His Mutation to Type 1 Diabetes as a Nonautoimmune Genetic Basis  

Microsoft Academic Search

Recently, a novel gene for a putative transmembrane protein (WFS1\\/wolframin) was found to be mutated in patients with Wolfram syndrome or DI-DM-OA-D (diabetes insipidus, diabetes mellitus, optic atrophy, and deafness) syndrome. It is suggested that the WFS1 protein is important in the survival of islet ?-cells. We studied the WFS1 gene in a Japanese population to assess its possible role

Takuya Awata; Kiyoaki Inoue; Susumu Kurihara; Tomoko Ohkubo; Ikuo Inoue; Takahiro Abe; Hirofumi Takino; Yasunori Kanazawa; Shigehiro Katayama

2000-01-01

72

Design and expected performances of the SCAO-WFS module of SIMPLE, the high-resolution near-infrared spectrometer for E-ELT  

NASA Astrophysics Data System (ADS)

We present and discuss the design and expected performances of the SCAO-WFS module of SIMPLE, the highsd resolution near-infrared spectrometer for the E-ELT which is designed to operate in the wavelengths range 0.84-2.5?m with an entrance slit width of 27mas which yields a spectral resolving power of R=130,000. We analyze both pyramid and SH wave-front sensors operating at near-infrared wavelengths (1-2 ?m). The main results can be summarized as follows. - Good levels of AO correction can only be achieved within a few arc-sec of the reference star. The primary applications of SCAO correction are therefore observations where the science object is compact and bright enough to be used as reference star, feeding the WFS via a beam-splitter. We concentrate on a WFS operating at nearinfrared wavelengths because many of the scientific targets of SIMPLE are intrinsically very red. - The pyramid WFS provides better performances than the SH, because it is less affected by aliasing errors. - The quality of AO correction is almost independent on the wavelength at which the wave-front is sensed. Therefore, we simplify the design the WFS module by not including the K-band, i.e. operating in the 1.0-2.1?m range. Extension to shorter wavelengths is also possible but requires exchanging the atmospheric dispersion compensator. - Using a pyramid WFS with 84x84 sub-apertures one can achieve remarkably high values of light-concentration in the slit, i.e. ~70% in K and ~40% at 0.9?m. - The limiting magnitude for the 84×84 WFS is about 13.5+2.5•log(?), where ? is the fraction of stellar light sent to the WFS by the beam-splitter. - Somewhat fainter limits, i.e. magnitudes ~14.0+2.5•log(?), can be achieved by changing the camera optics of the WFS and sampling 42×42 sub-apertures.

Tozzi, A.; Oliva, E.; Le Louarn, M.; Origlia, L.

2010-07-01

73

Molecular characterization of WFS1 in an Iranian family with Wolfram syndrome reveals a novel frameshift mutation associated with early symptoms.  

PubMed

Wolfram syndrome (WS) is a rare autosomal recessive neurodegenerative disorder that represents a likely source of childhood diabetes especially among countries in the consanguinity belt. The main responsible gene is WFS1 for which over one hundred mutations have been reported from different ethnic groups. The aim of this study was to identify the molecular etiology of WS and to perform a possible genotype-phenotype correlation in Iranian kindred. An Iranian family with two patients was clinically studied and WS was suspected. Genetic linkage analysis via 5 STR markers was carried out. For identification of mutations, DNA sequencing of WFS1 including all the exons, exon-intron boundaries and the promoter was performed. Linkage analysis indicated linkage to the WFS1 region. After DNA sequencing of WFS1, one novel pathogenic mutation, which causes frameshift alteration c.2177_2178insTCTTC (or c.2173_2177dupTCTTC) in exon eight, was found. The genotype-phenotype correlation analysis suggests that the presence of the homozygous mutation may be associated with early onset of disease symptoms. This study stresses the necessity of considering the molecular analysis of WFS1 in childhood diabetes with some symptoms of WS. PMID:23845777

Sobhani, Maryam; Tabatabaiefar, Mohammad Amin; Rajab, Asadollah; Kajbafzadeh, Abdol-Mohammad; Noori-Daloii, Mohammad Reza

2013-07-08

74

Identification of p.A684V missense mutation in the WFS1 gene as a frequent cause of autosomal dominant optic atrophy and hearing impairment  

PubMed Central

Optic atrophy (OA) and sensorineural hearing loss (SNHL) are key abnormalities in several syndromes, including the recessively inherited Wolfram syndrome, caused by mutations in WFS1. In contrast, the association of autosomal dominant OA and SNHL without other phenotypic abnormalities is rare, and almost exclusively attributed to mutations in the Optic Atrophy-1 gene (OPA1), most commonly the p.R445H mutation. We present eight probands and their families from the US, Sweden, and UK with OA and SNHL, whom we analyzed for mutations in OPA1 and WFS1. Among these families, we found three heterozygous missense mutations in WFS1 segregating with OA and SNHL: p.A684V (six families), and two novel mutations, p.G780S and p.D797Y, all involving evolutionarily conserved amino acids and absent from 298 control chromosomes. Importantly, none of these families harbored the OPA1 p.R445H mutation. No mitochondrial DNA deletions were detected in muscle from one p.A684V patient analyzed. Finally, wolframin p.A684V mutant ectopically expressed in HEK cells showed reduced protein levels compared to wild-type wolframin, strongly indicating that the mutation is disease-causing. Our data support OA and SNHL as a phenotype caused by dominant mutations in WFS1 in these additional eight families. Importantly, our data provide the first evidence that a single, recurrent mutation in WFS1, p.A684V, may be a common cause of ADOA and SNHL, similar to the role played by the p.R445H mutation in OPA1. Our findings suggest that patients who are heterozygous for WFS1 missense mutations should be carefully clinically examined for OA and other manifestations of Wolfram syndrome.

Rendtorff, Nanna D.; Lodahl, Marianne; Boulahbel, Houda; Johansen, Ida R.; Pandya, Arti; Welch, Katherine O.; Norris, Virginia W.; Arnos, Kathleen S.; Bitner-Glindzicz, Maria; Emery, Sarah B.; Mets, Marilyn B.; Fagerheim, Toril; Eriksson, Kristina; Hansen, Lars; Bruhn, Helene; Moller, Claes; Lindholm, Sture; Ensgard, Stefan; Lesperance, Marci M.; Tranebjaerg, Lisbeth

2011-01-01

75

Weighted Feature Significance: A Simple, Interpretable Model of Compound Toxicity Based on the Statistical Enrichment of Structural Features  

PubMed Central

In support of the U.S. Tox21 program, we have developed a simple and chemically intuitive model we call weighted feature significance (WFS) to predict the toxicological activity of compounds, based on the statistical enrichment of structural features in toxic compounds. We trained and tested the model on the following: (1) data from quantitative high–throughput screening cytotoxicity and caspase activation assays conducted at the National Institutes of Health Chemical Genomics Center, (2) data from Salmonella typhimurium reverse mutagenicity assays conducted by the U.S. National Toxicology Program, and (3) hepatotoxicity data published in the Registry of Toxic Effects of Chemical Substances. Enrichments of structural features in toxic compounds are evaluated for their statistical significance and compiled into a simple additive model of toxicity and then used to score new compounds for potential toxicity. The predictive power of the model for cytotoxicity was validated using an independent set of compounds from the U.S. Environmental Protection Agency tested also at the National Institutes of Health Chemical Genomics Center. We compared the performance of our WFS approach with classical classification methods such as Naive Bayesian clustering and support vector machines. In most test cases, WFS showed similar or slightly better predictive power, especially in the prediction of hepatotoxic compounds, where WFS appeared to have the best performance among the three methods. The new algorithm has the important advantages of simplicity, power, interpretability, and ease of implementation.

Huang, Ruili; Southall, Noel; Xia, Menghang; Cho, Ming-Hsuang; Jadhav, Ajit; Nguyen, Dac-Trung; Inglese, James; Tice, Raymond R.; Austin, Christopher P.

2009-01-01

76

Using the Assay Data Exchange standard with WFS to build a complete minerals exploration data-transfer chain  

NASA Astrophysics Data System (ADS)

Assay data is a key information type used in the solid earth sciences, particularly for mineral exploration. As well as its conceptual importance it comprises a significant proportion of data transferred between organizations. In collaboration with both the commercial and regulatory sector, we have developed an XML encoding for assay data. The Assay Data Exchange (ADX) encoding is a GML Application Schema, based on the Observations and Measurements recommendation from Open Geospatial Consortium (OGC), extended with assay specific attributes. The model is normalized, distinguishing the observation event and result from the observation target (specimen) and procedure (instrument). ADX has been used in the deployment of standard web-service interfaces to the archives of agencies who are custodians of such data (geological surveys). The web-service interface is a profile of the standard http-based OGC Web Feature Service. Map-visualization and tabular-report web-clients have been deployed that access these services. In addition, a number of standard data processing and visualization software packages have been enhanced to act as clients to these sources. The immediate value of the standard format and interface is that it enables lossless transfer of assay data from laboratory to explorer, from explorer to regulator, and then from statutory custodian back to speculative explorer, using a common format. This represents the complete data transfer cycle relevant to the mineral exploration industry. However, the more general value of the project is that it demonstrates the efficiencies that can be gained by standardizing data access protocols, and the use of a consensus process within the appropriate community for design of technical standards constructed as profiles of more generic standards.

Cox, S. J.; Woodcock, R.; Dent, A.; Girvan, S.; Atkinson, R.

2005-12-01

77

Using Semantic Web Technologies to Streamline the Implementation of the OGC Web Service Interface Specifications for Coverage and Feature Data Within OPeNDAP.  

NASA Astrophysics Data System (ADS)

The OPeNDAP Data Access Protocol has seen widespread adoption within the science community. OPeNDAP servers are currently deployed by individual investigators, academic institutions, and at national and international data repositories to provide distributed data access for their respective user communities. Many of these data providers anticipate that there will be significant demand for data access by applications using the suite of OGC web service specifications. Supporting multiple data access protocols can be expensive, both in the initial acquisition and deployment cost for the software components as well as for the potentially redundant maintenance and security costs required when supporting multiple server implementations operationally. To provide a cost-effective solution for these data providers OPeNDAP is developing extensions to its data access protocol to enable the use of semantic web technologies for data and metadata transformations, and extensions to its server architecture to support request and response operations simultaneously for multiple data access protocols. The OGC Web Coverage Service Interface Specification is the initial data access protocol to be layered onto the OPeNDAP server for this multi-protocol support. Supporting data access through the OGC service interfaces comprises operations that are both mechanical and semantic. The OPeNDAP server architecture (Hyrax) uses a Lightweight Front-End Server (OLFS) that is responsible for interacting with the requesting client application. The OLFS is extensible and in this project has been extended to support the OGC web service interface specifications. Coupled with the OLFS the Hyrax architecture uses a Back-End Server (BES) to provide data access, processing, and response generation that are then returned through the OLFS to the requesting client. Similar to the OLFS, the BES is extensible and for this project has been extended to support various mechanical actions required in support of the OGC service's request and response interface specification. In addition to the simpler, mechanical aspects required to support these multiple protocols, semantic operations are required in order to interpret request elements and for constructing well-formed OGC responses. To support these semantic operations we"ve developed ontological representations of the OGC, OPeNDAP, and NetCDF/CF data models, and the relationships between those models. The OLFS has been extended to support XSLT operations transforming OPeNDAP's XML data descriptor (DDX) to a Resource Description Framework (RDF) representation. Modules executing within the BES operate on these RDF representations, using these ontologies to crosswalk the metadata elements between the protocols.

Holloway, D.; Blumenthal, M.; Potter, N.; West, P.

2008-12-01

78

Learning a Language with Web 2.0: Exploring the Use of Social Networking Features of Foreign Language Learning Websites  

ERIC Educational Resources Information Center

This paper presents the results of an online survey and a usability test performed on three foreign language learning websites that use Web 2.0 technology. The online survey was conducted to gain an understanding of how current users of language learning websites use them for learning and social purposes. The usability test was conducted to gain…

Stevenson, Megan P.; Liu, Min

2010-01-01

79

Efficacy of Standard Versus Enhanced Features in a Web-Based Commercial Weight-Loss Program for Obese Adults, Part 2: Randomized Controlled Trial  

PubMed Central

Background Commercial Web-based weight-loss programs are becoming more popular and increasingly refined through the addition of enhanced features, yet few randomized controlled trials (RCTs) have independently and rigorously evaluated the efficacy of these commercial programs or additional features. Objective To determine whether overweight and obese adults randomized to an online weight-loss program with additional support features (enhanced) experienced a greater reduction in body mass index (BMI) and increased usage of program features after 12 and 24 weeks compared to those randomized to a standard online version (basic). Methods An assessor-blinded RCT comparing 301 adults (male: n=125, 41.5%; mean age: 41.9 years, SD 10.2; mean BMI: 32.2 kg/m2, SD 3.9) who were recruited and enrolled offline, and randomly allocated to basic or enhanced versions of a commercially available Web-based weight-loss program for 24 weeks. Results Retention at 24 weeks was greater in the enhanced group versus the basic group (basic 68.5%, enhanced 81.0%; P=.01). In the intention-to-treat analysis of covariance with imputation using last observation carried forward, after 24 weeks both intervention groups had reductions in key outcomes with no difference between groups: BMI (basic mean –1.1 kg/m2, SD 1.5; enhanced mean –1.3 kg/m2, SD 2.0; P=.29), weight (basic mean –3.3 kg, SD 4.7; enhanced mean –4.0 kg, SD 6.2; P=.27), waist circumference (basic mean –3.1 cm, SD 4.6; enhanced mean –4.0 cm, SD 6.2; P=.15), and waist-to-height ratio (basic mean –0.02, SD 0.03; enhanced mean –0.02, SD 0.04, P=.21). The enhanced group logged in more often at both 12 and 24 weeks, respectively (enhanced 12-week mean 34.1, SD 28.1 and 24-week mean 43.1, SD 34.0 vs basic 12-week mean 24.6, SD 25.5 and 24-week mean 31.8, SD 33.9; P=.002). Conclusions The addition of personalized e-feedback in the enhanced program provided limited additional benefits compared to a standard commercial Web-based weight-loss program. However, it does support greater retention in the program and greater usage, which was related to weight loss. Further research is required to develop and examine Web-based features that may enhance engagement and outcomes and identify optimal usage patterns to enhance weight loss using Web-based programs. Trial Registration Australian New Zealand Clinical Trials Registry (ANZCTR) trial number: ACTRN12610000197033; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=335159 (Archived by WebCite at http://www.webcitation.org/6HoOMGb8j).

Morgan, Philip J; Hutchesson, Melinda J; Callister, Robin

2013-01-01

80

Design and expected performances of the SCAO-WFS module of SIMPLE, the high-resolution near-infrared spectrometer for E-ELT  

Microsoft Academic Search

We present and discuss the design and expected performances of the SCAO-WFS module of SIMPLE, the highsd resolution near-infrared spectrometer for the E-ELT which is designed to operate in the wavelengths range 0.84-2.5mum with an entrance slit width of 27mas which yields a spectral resolving power of R=130,000. We analyze both pyramid and SH wave-front sensors operating at near-infrared wavelengths

A. Tozzi; E. Oliva; M. Le Louarn; L. Origlia

2010-01-01

81

Integration of Ontologies and Semantic Annotations with Resource Description Framework in Eclipse-Based Platforms with Editing Features for Semantic Web  

Microsoft Academic Search

\\u000a Over the last three years, the number of developed Semantic Web tools has fastly increased. This huge arrival of new tools\\u000a reveals the acceptance and credibility of the Semantic Web architecture. Nevertheless, currently available Semantic Web tools\\u000a are limited to work only with few layers of the Semantic Web architecture. Therefore, there is a need for a new generation\\u000a of

Rui G. Pereira; Mário M. Freire

2006-01-01

82

Grid-enabled Web Services for Geospatial Interoperability  

NASA Astrophysics Data System (ADS)

Geospatial interoperability technology makes better and easier use of the huge volume of distributed heterogeneous geospatial data and services in Earth related science research and applications . Open Geospatial Consortium (OGC) has been developing interoperable Web service specifications, such as Web Coverage Service (WCS), Web Map Service (WMS), Web Feature Service (WFS) and Catalog Service for Web (CSW), for promoting geospatial interoperability in the distributed environment. These specifications are widely used by the geospatial community for sharing data and service. Due to the complex nature of Earth related science research and applications, a geoprocessing task normally composes of many inter-related steps of computations in the web service environment. There is a need for the cooperation and security mechanism between any two geospatial web services. Grid, as a promising e-science infrastructure, promotes and facilitates the secure interoperation and collaboration of distributed heterogeneous resources. In this paper, we discuss the technology for enabling the OGC-based geospatial interoperability in a Globus- based Grid environment. Firstly, a new Grid-enabled catalogue services model for secure registry, discovery and access of geospatial data and service was developed. The model not only combines the information schemas of Grid Metadata Catalog Service (MCS)/Replica Location Service (RSL) and the OGC Catalog Service for Web (CSW), but also exploits the geospatial metadata standards including ISO 19115, ISO 19115- 2, FGDC Content Standard for Geospatial metadata, and NASA ECS Metadata. Based on the model, the Grid- enabled CSW (GCSW) service is developed. The service preserves the OGC CSW interface while providing the naming and location transparency by mapping Grid MCS/RLS information model to OGC CSW information model. Moreover, the OGC CSW model is extended to accommodate more than 40 mandatory metadata elements needed for describing the properties of geospatial data, and more than 20 mandatory elements needed for supporting various methods of geospatial service chaining defined in ISO 19119. The metadata model for data types and service types are proposed and integrated with CSW model to facilitate the service interoperability and chaining. Secondly, an intelligent Grid Service Mediator (iGSM) was developed to extend the other geospatial Web services (WCS, WMS etc.) to the Grid environment for geospatial service interoperability. Any request for geospatial services for users is completed through the request and response operations of geospatial services. Therefore, Grid Security Infrastructure (GSI) is combined with geospatial services to verify the validity of the requester. When the requester is valid, the service request will be sent to iGSM for fulfilling the request. IGSM then securely queries the Grid-enabled CSW service to determine where the required service and data are located and whether or not it is necessary for the service to interact with other services, and then invokes the service. If required data and service are at remote location, iGSM will manage the data and result traffics between machines. With implementation of GCSW, iGSM, and a number of Grid-enabled OGC geospatial services, we have successfully extended the application of Grid technology to the EO community for geospatial interoperability. Our experience with the project indicates that Grid technology has great potential for applications in the geospatial discipline. By using Grid technology as the foundation for geospatial data infrastructure, we achieved secure sharing of geospatial data and services while providing common OGC interfaces to users.

Chen, A.; di, L.; Bai, Y.; Wei, Y.

2006-05-01

83

Asymmetry in spider orb webs: a result of physical constraints?  

Microsoft Academic Search

A typical feature of most vertical orb webs is that the upper web region is smaller and contains less silk than the lower web region, creating an asymmetrical web. The degree of web asymmetry changes during the spider's development: small juveniles construct more symmetrical webs, but older and larger individuals decrease the upper web region. This implies that weight may

M. E. Herberstein; A. M. Heiling

1999-01-01

84

Guide to Healthy Web Surfing  

MedlinePLUS

... Videos & Cool Tools ESPAÑOL MedlinePlus Guide to Healthy Web Surfing To use the sharing features on this ... when evaluating the quality of health information on Web sites? Here are some suggestions based on our ...

85

Sign language Web pages.  

PubMed

The WORLD WIDE WEB has changed the way people interact. It has also become an important equalizer of information access for many social sectors. However, for many people, including some sign language users, Web accessing can be difficult. For some, it not only presents another barrier to overcome but has left them without cultural equality. The present article describes a system that allows sign language-only Web pages to be created and linked through a video-based technique called sign-linking. In two studies, 14 Deaf participants examined two iterations of signlinked Web pages to gauge the usability and learnability of a signing Web page interface. The first study indicated that signing Web pages were usable by sign language users but that some interface features required improvement. The second study showed increased usability for those features; users consequently couldnavigate sign language information with ease and pleasure. PMID:17225637

Fels, Deborah I; Richards, Jan; Hardman, Jim; Lee, Daniel G

2006-01-01

86

The Learning Web.  

ERIC Educational Resources Information Center

|Presents The Learning Web, a web site dedicated to K-12 earth science education that is maintained by the U.S. Geological Survey. Includes earth science activities and information presented in three categories: (1) Global Change; (2) Working With Maps; and (3) Earth Science. Also features other educational sections such as Ask-A-Geologist,…

Science Scope, 1997

1997-01-01

87

Aza's Web  

NSDL National Science Digital Library

The American Zoo and Aquarium Association (AZA) presents Aza's Web, an online headquarters for a campaign created "to engage a dialogue among zoos, aquariums, children and leaders" about protecting the environment. Aza's Clubhouse offers kid-friendly games and activities with an environmental message, each featuring Aza, the campaign's spokescreature (a somewhat bewildering character composed of nearly every animal taxa known to humanity, and then some). Visitors can read Aza's comics, download a Pledge for the Planet certificate, play educational games, post a message to the online bulletin board, and more.

88

Policy-based Fault Diagnosis Technology for Web Service  

Microsoft Academic Search

In order to improve the robustness and recovering capability of the Web service, the fault diagnosis becomes the key technology in the Web service management. On the basis of analyzing the features of the Web service fault, this paper proposes a Web service fault taxonomy that combines the Web service type with the implementation process and constructs a Web service

Liu Li; Kuang Xiaohui; Li Yuanling; Xu Fei; Zou Tao; Cui Yimin

2011-01-01

89

Automatic Hidden Web Database Classification  

Microsoft Academic Search

In this paper, a method for automatic classification of Hidden-Web databases is addressed. In our approach, the classification\\u000a tree for Hidden Web databases is constructed by tailoring the well accepted classification tree of DMOZ Directory. Then the\\u000a feature for each class is extracted from randomly selected Web documents in the corresponding category. For each Web database,\\u000a query terms are selected

Zhiguo Gong; Jingbai Zhang; Qian Liu

2007-01-01

90

Charlotte's Web  

NSDL National Science Digital Library

Similar to how Charlotte uses her web to communicate, students create webs for short messages. They learn how spiders create their webs, and about the different types of webs they make. With this knowledge, students design and create their own webs and incorporate messages.

Center For Engineering Educational Outreach

91

Web Image Clustering  

Microsoft Academic Search

While image clustering has many important applications ranging from personal to Web image management, its use is often limited by the difficulty of extracting reliable semantics from low level image features. The image clusters can be improved by using features extracted from image regions rather than the whole image. Region segmentation can be improved in turn, by considering all images

Maha El Choubassi; A. V. Nefian; I. Kozintsev; J.-Y. Bouguet; Yi Wu

2007-01-01

92

Web Geologic Time Scale  

NSDL National Science Digital Library

The University of California-Berkeley Museum of Paleontology (last mentioned in the June 16, 1995 Scout Report) has recently updated its Web Geologic Time Scale, an online feature that helps users learn about the geologic timeline and explore related museum exhibits. The familiar geologic timeline appears on the main page of the Web site, with hypertext links for each division of time. Every page of the Web Geologic Time Machine site is liberally sprinkled with links to related UCMP Web pages; think of it as a portal to all online information available from the museum. Altogether, this Web site provides a well-organized and comprehensive resource for learning how the planet has changed over time, and would be a great addition to earth or life sciences classroom material for a broad range of grades.

1994-01-01

93

Spider web  

NSDL National Science Digital Library

Spiders build webs as a way to catch food. Flying and crawling insects can easily be caught in this sticky web and eaten if they aren't careful. Spiders also live on these webs and store their eggs cases on webs.

N/A N/A (U.S. Fish and Wildlife Service;)

2005-07-25

94

Web Weavers  

NSDL National Science Digital Library

In this outdoor science/art activity, learners investigate spider webs by using string to create their own spider webs. Before making their own web models, learners look closely at spider webs in nature, using a water mist sprayer to make real webs more visible in their natural setting. Learners also consider the spiders and other animals they spot on or very near real webs. (In case of rain, this activity can be done in an old shed, garage or shelter where spider webs are found.)

Science, Lawrence H.

1980-01-01

95

An empirical study of the effects of interactivity on web user attitude  

Microsoft Academic Search

Despite the growing attention given to Web usability, little is understood as to what Web design features contribute to Web users' attitude, a major component of the usability of a Web site. This research investigates the effects of interactivity level on Web user's attitude towards commercial Web sites. It extends existing Web interface design and usability literature by empirically examining

Hock-hai Teo; Oh Lih-bin; Chunhui Liu; Kwok-Kee Wei

2003-01-01

96

Engaging Users: The Future of Academic Library Web Sites  

Microsoft Academic Search

This article examines current academic library Web site practices and recommends a conceptual model for future academic library Web site design. The author investigated 111 ARL member library Web sites and has summarized current site content, design patterns, and innovative features. The author discusses the Web 2.0 principles as defined by Tim O'Reilly and reviews the current literature on Web

Shu Liu

97

WEBtop (Operating Systems on Web)  

NASA Astrophysics Data System (ADS)

WebOS (Web based operating system) is a new form of Operating Systems. You can use your desktop as a virtual desktop on the web, accessible via a browser, with multiple integrated built-in applications that allow the user to easily manage and organize her data from any location. Desktop on web can be named as WEBtop. This paper starts with a introduction of WebOS and its benefits. For this paper, We have reviewed some most interesting WebOS available nowadays and tried to provide a detailed description of their features. We have identified some parameters as comparison criteria among them. A technical review is given with research design and future goals to design better web based operating systems is a part of this study. Findings of the study conclude this paper.

Sharma, M. K.; Kumar, Rajeev

2011-12-01

98

WebSite Boundary Detection  

Microsoft Academic Search

Defining the boundaries of a web-site, for (say) archiving or information retrieval purposes, is an important but complicated task. In this paper a web-page clustering approach to boundary detection is sug- gested. The principal issue is feature selection, hampered by the observa- tion that there is no clear understanding of what a web-site is. This paper proposes a definition of

Ayesh Alshukri; Frans Coenen; Michele Zito

2010-01-01

99

Web It!  

NSDL National Science Digital Library

In this outdoor activity, learners investigate spider webs and feeding behavior, particularly how spiders trap food in their sticky silk webs while not getting stuck themselves. Learners catch small insects and drop them into webs they have found, then watch what the spiders do to approach an insect and prepare it for eating. This activity goes well with Web Weavers from the same source, and is a good night activity because spiders are nocturnal animals.

Science, Lawrence H.

1981-01-01

100

WebAssign  

NSDL National Science Digital Library

WebAssign is a versatile, web-based homework service for educators who want to offer expanded learning opportunities to their students. WebAssign delivers, collects, grades, and records customized homework assignments over the Internet. You can generate assignments with different numerical values, so each of your students is provided with a unique question to solve. This feature encourages motivated, independent thinking with the benefit of collaborative learning. If you are using one of the many popular textbooks supported by WebAssign, you can offer pertinent exercises and problems that relate directly to the lesson at hand. You can write your own questions, or use questions that your colleagues have found successful.

Webassign

2003-10-10

101

Chapter 59: Web Services  

NASA Astrophysics Data System (ADS)

Web services are a cornerstone of the distributed computing infrastructure that the VO is built upon yet to the newcomer, they can appear to be a black art. This perception is not helped by the miasma of technobabble that pervades the subject and the seemingly impenetrable high priesthood of actual users. In truth, however, there is nothing conceptually difficult about web services (unsurprisingly any complexities will lie in the implementation details) nor indeed anything particularly new. A web service is a piece of software available over a network with a formal description of how it is called and what it returns that a computer can understand. Note that entities such as web servers, ftp servers and database servers do not generally qualify as they lack the standardized description of their inputs and outputs. There are prior technologies, such as RMI, CORBA, and DCOM, that have employed a similar approach but the success of web services lies predominantly in its use of standardized XML to provide a language-neutral way for representing data. In fact, the standardization goes further as web services are traditionally (or as traditionally as five years will allow) tied to a specific set of technologies (WSDL and SOAP conveyed using HTTP with an XML serialization). Alternative implementations are becoming increasingly common and we will cover some of these here. One important thing to remember in all of this, though, is that web services are meant for use by computers and not humans (unlike web pages) and this is why so much of it seems incomprehensible gobbledegook. In this chapter, we will start with an overview of the web services current in the VO and present a short guide on how to use and deploy a web service. We will then review the different approaches to web services, particularly REST and SOAP, and alternatives to XML as a data format. We will consider how web services can be formally described and discuss how advanced features such as security, state and asynchrony can be provided. Note that much of this material is not yet used in the VO but features heavily in IVOA discussions on advanced services and capabilities.

Graham, M. J.

102

Polar Meteorology: An Interactive Educational Web Module  

Microsoft Academic Search

The author has created a public web module that explores topics related to polar meteorology and climatology. Currently, the module contains sections on vessel icing, polar climates, climate change and web resources. The key feature of the web module is interactivity; each section has an exercise that requires the student to actively participate in his\\/her education rather than just absorb

P. S. Guest

2003-01-01

103

MedlinePlus Connect: Web Application  

MedlinePLUS

MedlinePlus Connect: Web Application To use the sharing features on this page, please enable JavaScript. MedlinePlus Connect is available as a ... please see our guidelines and instructions on linking. Web Application Overview The API for the Web application ...

104

MedlinePlus Connect: Web Service  

MedlinePLUS

MedlinePlus Connect: Web Service To use the sharing features on this page, please enable JavaScript. MedlinePlus Connect is available as a ... if you implement MedlinePlus Connect by contacting us . Web Service Overview The REST-based MedlinePlus Connect Web ...

105

Implication of genetic variants near SLC30A8, HHEX, CDKAL1, CDKN2A/B, IGF2BP2, FTO, TCF2, KCNQ1, and WFS1 in Type 2 Diabetes in a Chinese population  

PubMed Central

Background Recently, several genome-wide and candidate gene association studies have identified many novel genetic loci for type 2 diabetes (T2D); among these genes, CDKAL1, IGF2BP2, SLC30A8, CDKN2A/B, HHEX, FTO, TCF2, KCNQ1, and WFS1 are the most important. We aimed to determine the effects of these genetic loci associated with T2D in the Chinese Han population of China. Methods Single-nucleotide polymorphisms (SNPs) in or near CDKAL1, IGF2BP2, SLC30A8, CDKN2A/B, HHEX, FTO, TCF2, KCNQ1, and WFS1 genes were genotyped in a case-control Chinese Han sample living in Beijing, China involving 1024 patients with T2D and 1005 control subjects. Results In Chinese Han, we replicated the associations between 7 genetic loci and T2D, with risk allele-specific odds ratios (ORs) as follows: 1.27 (95% CI, 1.11-1.45; p = 0.0008) for CDKAL1-rs10946398, 1.26 (95% CI, 1.08-1.47; p = 0.003) for IGF2BP2-rs4402960, 1.19 (95% CI, 1.04-1.37; p = 0.009) for SLC30A8-rs13266634, 1.22 (95% CI, 1.06-1.41; p = 0.005) for CDKN2A/B-rs10811661, 1.20 (95% CI, 1.01-1.42; p = 0.03) for HHEX-rs5015480, 1.37 (95% CI, 1.19-1.69; p = 1.0 × 10-4) for KCNQ1-rs2237892, and 1.24 (95% CI, 1.01-1.52; p = 0.046) for FTO-rs8050136 after adjustment for age, gender, and body mass index. Not only did an association between WFS1-rs6446482 and early-onset T2D exist in the subgroup analysis, but TCF2-rs7501939 and WFS1-rs6446482 were also confirmed to confer risk for T2D in this meta-analysis. Moreover, the relationship between FTO-rs8050136 and body mass index, together with the effect of CDKAL1-rs10946398 on beta cell function, was also observed in the control individuals. Conclusions Our findings support the important contribution of these genetic loci to susceptibility for T2D in the Chinese Han population in Beijing of China.

2010-01-01

106

www.invisible-web.net  

NSDL National Science Digital Library

This directory, the companion site to a new book, The Invisible Web: Uncovering Information Sources Search Engines Can't See, is brought to us from Chris Sherman (last mentioned in the April 28, 2000 Scout Report) and Gary Price (last mentioned in the October 26, 2001 Scout Report), two of the Web's best known infonauts. In addition to the Invisible Web Directory, a useful annotated directory of sources for "invisible" resources on the Web, the site features the text from the book's chapter on business and investing resources as well as .pdf versions of the introduction and table of contents.

Price, Gary.; Sherman, Chris.

2001-01-01

107

SVG-Based Web Publishing  

NASA Astrophysics Data System (ADS)

With the increasing applications of the Web in e-commerce, advertising, and publication, new technologies are needed to improve Web graphics technology due to the current limitation of technology. The SVG (Scalable Vector Graphics) technology is a new revolutionary solution to overcome the existing problems in the current web technology. It provides precise and high-resolution web graphics using plain text format commands. It sets a new standard for web graphic format to allow us to present complicated graphics with rich test fonts and colors, high printing quality, and dynamic layout capabilities. This paper provides a tutorial overview about SVG technology and its essential features, capability, and advantages. The reports a comparison studies between SVG and other web graphics technologies.

Gao, Jerry Z.; Zhu, Eugene; Shim, Simon

2003-01-01

108

Web advertising  

Microsoft Academic Search

Advertising on the World Wide Web has arrived. The ads we see now mark the beginning of a rapidly growing business. $906.5 million was spent on Internet advertising in the USA in 1997, and that will rise to $7.7 billion by 2002. The Web's unique properties present excellent advertising opportunities, not only for the advertisers and publishers, but also for

M. McCandless

1998-01-01

109

Effects of web document evolution on genre classification  

Microsoft Academic Search

The World Wide Web is a massive corpus that constantly evolves. Classification experiments usually grab a snapshot (temporally and spatially) of the Web for a corpus. In this paper, we examine the effects of page evolution on genre classification of Web pages. Web genre refers to the type of the page characterized by features such as style, form or presentation

Elizabeth Sugar Boese; Adele E. Howe

2005-01-01

110

Learning-based Web Data Cleansing for Information Retrieval  

Microsoft Academic Search

With rapid growth of web information, how to select high quality web pages that cover valuable information query-independently becomes more and more important in web IR research. Based on query-independent feature analysis, we propose a data cleansing algorithm by selecting an important type of high quality pages (key resources) on the web. Study into the cleansed page set shows that

Yiqun LIU; Min ZHANG; Canhui WANG; Shaoping MA

2006-01-01

111

Hera: Engineering Web Applications Using Semantic Web-based Models  

NASA Astrophysics Data System (ADS)

In this chapter, we consider the contribution of models and model-driven approaches based on Semantic Web for the development of Web applications. The model-driven web engineering approach, that separates concerns on different abstraction level in the application design process, allows for more robust and structural design of web applications. This is illustrated by the use of Hera, an approach from the class of Web engineering methods that relies on models expressed using RDF(S) and an RDF(S) query language. It illustrates how models and in particular models that fit with the ideas and concepts from the Semantic Web allow to approach the design and engineering of modern, open and heterogeneous Web based systems. In the presented approach, adaptation and personalization are a main aspect and it is illustrated how they are expressed using semantic data models and languages. Also specific features of Hera are discussed, like interoperability between applications in user modeling, aspect orientation in Web design and graphical tool support for Web application design.

van der Sluijs, Kees; Houben, Geert-Jan; Leonardi, Erwin; Hidders, Jan

112

Universal scaling relations in food webs  

NASA Astrophysics Data System (ADS)

The structure of ecological communities is usually represented by food webs. In these webs, we describe species by means of vertices connected by links representing the predations. We can therefore study different webs by considering the shape (topology) of these networks. Comparing food webs by searching for regularities is of fundamental importance, because universal patterns would reveal common principles underlying the organization of different ecosystems. However, features observed in small food webs are different from those found in large ones. Furthermore, food webs (except in isolated cases) do not share general features with other types of network (including the Internet, the World Wide Web and biological webs). These features are a small-world character and a scale-free (power-law) distribution of the degree (the number of links per vertex). Here we propose to describe food webs as transportation networks by extending to them the concept of allometric scaling (how branching properties change with network size). We then decompose food webs in spanning trees and loop-forming links. We show that, whereas the number of loops varies significantly across real webs, spanning trees are characterized by universal scaling relations.

Garlaschelli, Diego; Caldarelli, Guido; Pietronero, Luciano

2003-05-01

113

SHARP Web  

NSDL National Science Digital Library

SHARP Web is a collection of resources for scholars and students of the history of print culture in any place, language, or period. Affiliated with the Society for the History of Authorship, Reading & Publishing (SHARP), SHARP Web offers guides to publishers' archives, syllabi for courses in book history, bibliographies, links to exhibits and special collections, and up-to-date notices and calls for papers. Whether you're studying American colonial newspapers or illuminated manuscripts, children's literature or the transmission of ancient texts, SHARP Web is a good place to connect with the international community of book historians.

114

Web Design  

NSDL National Science Digital Library

The Web Design workshop will take you through the complete process of designing and building a website. Students will learn to write HTML and CSS code to create and build fully functioning websites from their designs.

115

WebBrowser Control  

Microsoft Academic Search

\\u000a It felt like false advertising when, at the end of last century, cellular phone companies began to promote Internet access\\u000a as a feature of their devices. As customers quickly learned when they tried to get online, their phones could only access\\u000a web pages written in Wireless Markup Language (WML), and not the traditional HyperText Markup Language (HTML) used by the

Henry Lee; Eugene Chuvyrov

116

WebBrowser Control  

Microsoft Academic Search

\\u000a It felt like false advertising when, just a short ten years ago, cellular phone companies began to promote Internet access\\u000a as a feature of their devices. As customers quickly learned when they tried to get online, their phones could only properly\\u000a display web pages written in Wireless Markup Language (WML) and not the traditional HyperText Markup Language (HTML) used\\u000a by

Henry Lee; Eugene Chuvyrov

117

Print, Web Aids Help Men Decide on Cancer Screening  

MedlinePLUS

... features on this page, please enable JavaScript. Print, web aids help men decide on cancer screening (*this ... to talk about screening with a doctor. The web version also included video testimonials and pop-up ...

118

A Web Information Retrieval System  

NASA Astrophysics Data System (ADS)

An approach for the retrieval of price information from internet sites is applied to real-world application problems in this paper. The Web Information Retrieval System (WIRS) utilizes Hidden Markov Model (HMM) for its powerful capability to process temporal information. HMM is an extremely flexible tool and has been successfully applied to a wide variety of stochastic modeling tasks. In order to compare the prices and features of products from various web sites, the WIRS extracts prices and descriptions of various products within web pages. The WIRS is evaluated with real-world problems and compared with a conventional method and the result is reported in this paper.

Kim, Tae-Hyun; Park, Dong-Chul; Huh, Woong; Kim, Hyen-Ug; Yoon, Chung-Hwa; Park, Chong-Dae; Woo, Dong-Min; Jeong, Taikyeong; Cho, Il-Hwan; Lee, Yunsik

119

Web Sponsorship and Campaign Effects: Assessing the Difference Between Positive and Negative Web Sites  

Microsoft Academic Search

This 2 × 3 experiment investigated the impact of Web-based political campaigns on viewers. Three distinct sites were created as stimuli: the first is positive about the feature candidate, the second is negative toward his or her opponent, and the third contains both positive and negative messages. Subjects viewed identical Web sites sponsored by the feature candidate and by an interest group.

H. Denis Wu; Nicole S. Dahmen

2010-01-01

120

Developing integrated Web and database applications using JAVA applets and JDBC drivers  

Microsoft Academic Search

With the maturity of network technology, the deterministic factor of a 'successful' web site does not as much depend on its connectivity to the Internet, rather the content of web pages plays a more important role. The inclusion of dynamic data, for example, has become an increasingly desirable feature of a web page. Web servers that support dynamic web pages

Andrew Yang; James Linn; David Quadrato

1998-01-01

121

Web processing service for landslide hazard assessment  

NASA Astrophysics Data System (ADS)

Hazard analysis requires heavy computation and specialized software. Web processing services can offer complex solutions that can be accessed through a light client (web or desktop). This paper presents a web processing service (both WPS and Esri Geoprocessing Service) for landslides hazard assessment. The web processing service was build with Esri ArcGIS Server solution and Python, developed using ArcPy, GDAL Python and NumPy. A complex model for landslide hazard analysis using both predisposing and triggering factors combined into a Bayesian temporal network with uncertainty propagation was build and published as WPS and Geoprocessing service using ArcGIS Standard Enterprise 10.1. The model uses as predisposing factors the first and second derivatives from DEM, the effective precipitations, runoff, lithology and land use. All these parameters can be served by the client from other WFS services or by uploading and processing the data on the server. The user can select the option of creating the first and second derivatives from the DEM automatically on the server or to upload the data already calculated. One of the main dynamic factors from the landslide analysis model is leaf area index. The LAI offers the advantage of modelling not just the changes from different time periods expressed in years, but also the seasonal changes in land use throughout a year. The LAI index can be derived from various satellite images or downloaded as a product. The upload of such data (time series) is possible using a NetCDF file format. The model is run in a monthly time step and for each time step all the parameters values, a-priory, conditional and posterior probability are obtained and stored in a log file. The validation process uses landslides that have occurred during the period up to the active time step and checks the records of the probabilities and parameters values for those times steps with the values of the active time step. Each time a landslide has been positive identified new a-priory probabilities are recorded for each parameter. A complete log for the entire model is saved and used for statistical analysis and a NETCDF file is created and it can be downloaded from the server with the log file

Sandric, I.; Ursaru, P.; Chitu, D.; Mihai, B.; Savulescu, I.

2012-04-01

122

WebUser: mining unexpected web usage  

Microsoft Academic Search

Web usage mining has been much concentrated on the discovery of relevant user behaviours from Web access record data. In this paper, we present WebUser, an approach to discover unexpected usage in Web access log. We present a belief-driven method for extracting unexpected Web usage sequences, where the belief system consists of a temporal relation and semantics constrained sequence rules

Anne Laurent; Pascal Poncelet

2009-01-01

123

Which Bundles of Features in a Web-Based Personally Controlled Health Management System Are Associated With Consumer Help-Seeking Behaviors for Physical and Emotional Well-Being?  

PubMed Central

Background Personally controlled health management systems (PCHMS), which include a personal health record (PHR), health management tools, and consumer resources, represent the next stage in consumer eHealth systems. It is still unclear, however, what features contribute to an engaging and efficacious PCHMS. Objective To identify features in a Web-based PCHMS that are associated with consumer utilization of primary care and counselling services, and help-seeking rates for physical and emotional well-being concerns. Methods A one-group pre/posttest online prospective study was conducted on a university campus to measure use of a PCHMS for physical and emotional well-being needs during a university academic semester (July to November 2011). The PCHMS integrated an untethered personal health record (PHR) with well-being journeys, social forums, polls, diaries, and online messaging links with a health service provider, where journeys provide information for consumer participants to engage with clinicians and health services in an actionable way. 1985 students and staff aged 18 and above with access to the Internet were recruited online. Logistic regression, the Pearson product-moment correlation coefficient, and chi-square analyses were used to associate participants’ help-seeking behaviors and health service utilization with PCHMS usage among the 709 participants eligible for analysis. Results A dose-response association was detected between the number of times a user logged into the PCHMS and the number of visits to a health care professional (P=.01), to the university counselling service (P=.03), and help-seeking rates (formal or informal) for emotional well-being matters (P=.03). No significant association was detected between participant pre-study characteristics or well-being ratings at different PCHMS login frequencies. Health service utilization was strongly correlated with use of a bundle of features including: online appointment booking (primary care: OR 1.74, 95% CI 1.01-3.00; counselling: OR 6.04, 95% CI 2.30-15.85), personal health record (health care professional: OR 2.82, 95% CI 1.63-4.89), the poll (health care professional: OR 1.47, 95% CI 1.02-2.12), and diary (counselling: OR 4.92, 95% CI 1.40-17.35). Help-seeking for physical well-being matters was only correlated with use of the personal health record (OR 1.73, 95% CI 1.18-2.53). Help-seeking for emotional well-being concerns (including visits to the university counselling service) was correlated with a bundle comprising the poll (formal or informal help-seeking: OR 1.03, 95% CI 1.00-1.05), diary (counselling: OR 4.92, 95% CI 1.40-17.35), and online appointment booking (counselling: OR 6.04, 95% CI 2.30-15.85). Conclusions Frequent usage of a PCHMS was significantly associated with increased consumer health service utilization and help-seeking rates for emotional health matters in a university sample. Different bundles of PCHMS features were associated with physical and emotional well-being matters. PCHMS appears to be a promising mechanism to engage consumers in help-seeking or health service utilization for physical and emotional well-being matters.

Proudfoot, Judith; Andrews, Annie; Liaw, Siaw-Teng; Crimmins, Jacinta; Arguel, Amael; Coiera, Enrico

2013-01-01

124

Totally Hip Software, Inc.: WebPainter  

NSDL National Science Digital Library

Web authors in search of a high-quality tool for creating GIF animations should consider WebPainter by Totally Hip Software. Animated GIFs are viewable with most browsers, and are an easy way to spice up a Web site. WebPainter includes excellent bitmap drawing and animation tools, including an "onion skin" feature that allows users to draw a new animation frame while seeing a lightened version of the previous frame underneath. Pricing information is available at the site. An evaluation version of both the Mac and Windows 95/NT versions of WebPainter, which allows users save the first five frames of animation, is available for download. WebPainter is an excellent product for Web authors who would like to create animated graphics.

1997-01-01

125

Personalization of Rule-based Web Services  

PubMed Central

Nowadays Web users have clearly expressed their wishes to receive personalized services directly. Personalization is the way to tailor services directly to the immediate requirements of the user. However, the current Web Services System does not provide any features supporting this such as consideration of personalization of services and intelligent matchmaking. In this research a flexible, personalized Rule-based Web Services System to address these problems and to enable efficient search, discovery and construction across general Web documents and Semantic Web documents in a Web Services System is proposed. This system utilizes matchmaking among service requesters', service providers' and users' preferences using a Rule-based Search Method, and subsequently ranks search results. A prototype of efficient Web Services search and construction for the suggested system is developed based on the current work.

Choi, Okkyung; Han, SangYong

2008-01-01

126

Automated Metadata Extraction from Web Sources  

Microsoft Academic Search

This paper discusses the application of web wrapping technology in extracting metadata from web sources. This capability has been incorporated into a software tool known as Dynamic Dublin Core\\/Resource Description Framework Metadata Editor (DDC\\/RDF-Editor) which supports metadata development and management for resources in the World Wide Web. One key feature of the editor is the ability to automatically extract relevant

Nor Adnan Yahaya; Rosiza Buang

2006-01-01

127

WebProt?g?: A Collaborative Ontology Editor and Knowledge Acquisition Tool for the Web  

PubMed Central

In this paper, we present WebProtégé—a lightweight ontology editor and knowledge acquisition tool for the Web. With the wide adoption of Web 2.0 platforms and the gradual adoption of ontologies and Semantic Web technologies in the real world, we need ontology-development tools that are better suited for the novel ways of interacting, constructing and consuming knowledge. Users today take Web-based content creation and online collaboration for granted. WebProtégé integrates these features as part of the ontology development process itself. We tried to lower the entry barrier to ontology development by providing a tool that is accessible from any Web browser, has extensive support for collaboration, and a highly customizable and pluggable user interface that can be adapted to any level of user expertise. The declarative user interface enabled us to create custom knowledge-acquisition forms tailored for domain experts. We built WebProtégé using the existing Protégé infrastructure, which supports collaboration on the back end side, and the Google Web Toolkit for the front end. The generic and extensible infrastructure allowed us to easily deploy WebProtégé in production settings for several projects. We present the main features of WebProtégé and its architecture and describe briefly some of its uses for real-world projects. WebProtégé is free and open source. An online demo is available at http://webprotege.stanford.edu.

Tudorache, Tania; Nyulas, Csongor; Noy, Natalya F.; Musen, Mark A.

2012-01-01

128

Web Sitings.  

ERIC Educational Resources Information Center

|Presents seven mathematics games, located on the World Wide Web, for elementary students, including: Absurd Math: Pre-Algebra from Another Dimension; The Little Animals Activity Centre; MathDork Game Room (classic video games focusing on algebra); Lemonade Stand (students practice math and business skills); Math Cats (teaches the artistic beauty…

Lo, Erika

2001-01-01

129

Webbing It.  

ERIC Educational Resources Information Center

Provides a quick look at some World Wide Web sites that contain current election year information. Recommends Project Vote Smart, a site with links to online news organizations, the home pages of all presidential candidates, and other political sites. Briefly notes several interactive CD-ROM resources. (MJP)

Brandsberg, Jennifer

1996-01-01

130

WebAda  

NSDL National Science Digital Library

WebAda provides the user with the ability to write and compile programs using the Ada language without the need for additional software. Page one includes an introduction and a brief overview of the features, plans, documentation, and credits for WebAda. Users can then link to the development environment where a program may be written and compiled in the Ada language. Note that programs cannot be run, but only compiled. Additional information for the Ada language is available under LRM, the Ada 95 Reference Manual; Q&S, the Ada Quality and Style Guide; and Lovelace, an Ada 95 tutorial. The GNAT Reference Manual is also available for downloading. GNAT is the GNU Ada 95 Compiler and part of Ada Core Technologies, Inc.

1998-01-01

131

Web de Anza  

NSDL National Science Digital Library

Web de Anza: an Interactive Study Environment on Spanish Exploration and Colonization of "Alta California" 1774-1776 offers researchers, educators, and students information resources related to the study of two eighteenth-century Spanish overland expeditions from Sonora (Arizona) in New Spain to northern California. This site features primary source materials, such as the original diaries and letters of the expeditionary leader, Juan Bautista de Anza, commandant of the Presidio of Tubac in Sonora. The site also provides a wealth of additional information including bibliographies, biographies, commentaries, maps, timelines, pictures, and sounds and video clips associated with the expeditions. Although its developers claim that the site is still under construction, it contains enough information to keep visitors occupied for hours, if not days. Web de Anza is hosted by the Center for Advanced Technology in Education at the University of Oregon.

132

Web Page Authoring Tools: Comparison and Trends.  

ERIC Educational Resources Information Center

Initially available from universities and individual enthusiasts, software tools to author World Wide Web pages are maturing into very feature-rich applications and are now offered by large corporations. These applications are enabling more companies to create and maintain pages themselves on the Web or on corporate Intranets. The market continues…

Craney, Linda

133

Success Measurement of Web Services with BPEL  

Microsoft Academic Search

In this paper, we first modify the service-based language introduced by He in UTP Semantics for Web services (LNCS 4591: 353-372, 2007) into a general case of atomic statements and including the features of Web services such as coordination, compensations and some classic combinators of sequent composition, probabilistic choice, while and parallel statement. Based on this language, we study the

Yixiang Chen; Xinxing Wu

2010-01-01

134

Designing a Web-based Reading Course.  

ERIC Educational Resources Information Center

Describes a Web-based reading course for college developmental reading classes. Discusses course features, the first week of class, the benefits of Web-based instruction, old media versus new media, designing a successful site, and the benefits of patience. (SR)

Stefl-Mabry, Joette

1998-01-01

135

Platypus Wiki: a Semantic Wiki Wiki Web  

Microsoft Academic Search

This article describes PlatypusWiki, an enhanced Wiki Wiki Web using technologies from the Semantic Web. Platypus Wiki offers a simple user interface to create Wiki pages including metadata according to W3C standards. It uses RDF, RDF Schema and OWL to manage the metadata and create ontologies. We present the essential features of what we have called a Semantic Wiki Wiki

Stefano Emilio Campanini; Paolo Castagna; Roberto Tazzoli

2004-01-01

136

Extracting position relations from the web  

Microsoft Academic Search

In this paper, we present a new algorithm to extract people's position in a corporation from the Web. People's position in a corporation, which the term position relation refers to, is a kind of significant competitive intelligence for enterprises. Our algorithm is based on the structural feature of position relation in Web contents, i.e., position relation is usually described in

Yanhong Liu; Peiquan Jin; Lihua Yue

2009-01-01

137

MOWA: Museum of Web Art  

NSDL National Science Digital Library

Founded in 1997 by Amy Stone, the Museum of Web Art is dedicated to presenting the art of the Web in its own environment. MOWA is a bright, clean, easily navigated Web exhibition space primarily showing works probably best categorized as graphic design or commercial art. Look at the North Gallery exhibition of buttons, the East Gallery visitor counters, South Gallery wallpaper, or Classic Promos in the West Gallery for illustration. The special exhibit in Linker Hall right now is Gateways, interactive Website opening pages. Exhibitions are accompanied by guides, which you can open in another browser window, to keep handy while you view. The museum also has a kids wing currently featuring Susan Finley's animated stories, The Lizzys. At a time when others are lamenting the ephemeral nature of much of what we see on the Web, MOWA is archiving the best it.

1997-01-01

138

Accounting Data to Web Interface Using PERL.  

National Technical Information Service (NTIS)

This document will explain the process to create a web interface for the accounting information generated by the High Performance Storage Systems (HPSS) accounting report feature. The accounting report contains useful data but it is not easily accessed in...

C. Hargreaves

2001-01-01

139

Web 1.0 to Web 3.0 Evolution: Reviewing the Impacts on Tourism Development and Opportunities  

NASA Astrophysics Data System (ADS)

The most important event following the establishmenet of the Internet network was the Web introduced by Tim Berners-Lee. Websites give their owners features that allow sharing with which they can publish their content with users and visitors. In the last 5 years, we have seen some changes in the use of web. Users want to participate in content sharing and they like to interact with each other. This is known as Web 2.0. In the last year, Web 2.0 has reached maturity and now we need a smart web which will be accordingly be called Web 3.0. Web 3.0 is based on semantic web definition. Changing the way of using the web has had a clear impact on E-Tourism and its development and also on business models. In this paper, we review the definitions and describe the impacts of web evolution on E-Tourism.

Eftekhari, M. Hossein; Barzegar, Zeynab; Isaai, M. T.

140

A Structural and Content-Based Analysis for Web Filtering.  

ERIC Educational Resources Information Center

Presents an analysis of the distinguishing features of pornographic Web pages so that effective filtering techniques can be developed. Surveys the existing techniques for Web content filtering and describes the implementation of a Web content filtering system that uses an artificial neural network. (Author/LRW)

Lee, P. Y.; Hui, S. C.; Fong, A. C. M.

2003-01-01

141

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

142

Finding Communities in Site Web-Graphs and Citation Graphs  

Microsoft Academic Search

The Web is a typical example of a social network. One of the most intriguing features of the Web is its self-organization behavior, which is usually faced through the existence of communities. The dis- covery of the communities in a Web-graph can be used to improve the eectiv eness of search engines, for purposes of prefetching, bibliographic citation ranking, spam

Antonis Sidiropoulos

2006-01-01

143

FrogWeb  

NSDL National Science Digital Library

Brought to the Internet by the National Biological Information Infrastructure (NBII) (reviewed in the November 12, 1997 Scout Report for Science & Engineering), FrogWeb offers summaries of up-to-date research news related to Amphibians. Currently featured is the recent finding that parasites, not pollution, may be implicated in some amphibian declines. The Research section offers hyperlinked summaries of research on amphibian ecology, amphibian declines, and deformities. The News Releases section links users to current media coverage of frog research, and Education provides learning materials for K-12 students. For anyone interested in learning more about the decline of amphibians, this site offers a useful place from which to start.

144

Mono Lake Web Site  

NSDL National Science Digital Library

Mono Lake Web Site is the homepage of the Mono Lake Committee and offers helpful information regarding the unique hypersaline and alkaline environment. Visitors will find information about the Mono Lake Committee, natural and political histories of the area, related water policies, a photo gallery with image descriptions, and links to related sites- including a clearinghouse. Those interested in Mono Basin birds will find sightings, counts, bird walks, and other related information. An additional feature, Mono Lake Live, offers up-to-the-minute data on road conditions, satellite images, weather, lake level, bird sightings, snow pack, and earthquakes.

Reis, Greg; Committee, Mono L.

145

Web Booster Architecture for Accelerating Web Servers  

Microsoft Academic Search

Abstract—This paper describes a novel,approach,to increase,the performance,of web sites by changing ,the network ,traffic between the ,client and the web servers. This is achieved by introducing a web booster architecture, which instantaneously decreases the processing cost on a,web server for requests to both,static and dynamic,web resources. It consists of a booster appliance, which pre-processes client requests, and an accelerator software

Vsevolod V. Panteleenko; Vincent W. Freeh

146

Web-Based Learning: How Task Scaffolding and Web Site Design Support Knowledge Acquisition  

Microsoft Academic Search

Using WebQtiests for inquiry-based learning represents a higher-order use of technology requiring students to exercise information seeking, analyzing, and synthesizing strategies. This research was designed to obtain a better understanding of how to enhance the peda- gogical effectiveness ofWebQuests and of how students interact with the various features inherent to informational Web sites. A major objective was to examine the

S. Kim MacGregor; Yiping Lou

147

Web-Based Learning: How Task Scaffolding and Web Site Design Support  

Microsoft Academic Search

Using WebQuests for inquiry-based learning represents a higher-order use of technology requiring students to exercise information seeking, analyzing, and synthesizing strategies. This research was designed to obtain a better understanding of how to enhance the pedagogical effectiveness of WebQuests and of how students interact with the various features inherent to informational Web sites. A major objective was to examine the

S. Kim MacGregor; Yiping Lou

148

Vintage Calculators Web Museum  

NSDL National Science Digital Library

This "web museum" devoted to vintage calculators shows "the evolution from mechanical calculator to hand held electronic calculator." Some items featured include: Mechanical and early electronic desk calculators, "strange hand-held calculators," and articles, photographs, and databases from the archives of the International Association of Calculator Collectors. A history of the technology and information on British and sterling currency calculators are also posted here. The website also offers a Calculator time-line (chronicling calculator developments), background on the technology used by mechanical and early electronic calculators, and information on The Calculator Business. An index allows visitors to search the calculators featured on this site. The Puzzle Corner section asks visitors to contact them with any information that may answer unresolved questions regarding vintage calculators.

Tout, Nigel

149

Refining the Use of the Web (and Web Search) as a Language Teaching and Learning Resource  

ERIC Educational Resources Information Center

|The web is a potentially useful corpus for language study because it provides examples of language that are contextualized and authentic, and is large and easily searchable. However, web contents are heterogeneous in the extreme, uncontrolled and hence "dirty," and exhibit features different from the written and spoken texts in other linguistic…

Wu, Shaoqun; Franken, Margaret; Witten, Ian H.

2009-01-01

150

Web Archiving Service  

NSDL National Science Digital Library

The California Digital Library has developed a unique online service called the "web archiving service" which allows librarians and scholars to have access to web content from critical sites that have been captured and preserved over the past few years. The publicly archived documents can be browsed or searched courtesy of a helpful search engine. The archives currently available include those that deal with the 2007 Southern California wildfires, the 2010 Winter Olympics, and the world of International Development Organizations. Visitors can also build their own archives of websites and documents. The "Information for" box on the far right hand side of the homepage gives a link for "WAS Curators", which provides a multitude of documents and videos for new curators to aid them in building their archive. Moving along, users will find that some of the documents include "Collection Planning", "Rights Management", and "WAS Administration Features". The videos explain some of the curator features available, such as how to "Display and Analyze Capture Results" and "Evaluating Sites for Capture".

151

Web Spam Challenge 2007 Track II Secure Computing Corporation Research  

Microsoft Academic Search

To discriminate spam Web hosts\\/pages from normal ones, text-based and link-based data are provided for Web Spam Challenge Track II. Given a small part of labeled nodes (about 10%) in a Web linkage graph, the challenge is to predict other nodes' class to be spam or normal. We extract features from link-based data, and then combine them with text-based features.

Yuchun Tang; Yuanchen He; Sven Krasser; Paul Judge

2007-01-01

152

Forest Food Web  

NSDL National Science Digital Library

Food webs are an interconnection of producers, consumers, and decomposers. It is important to understand that a change to any level of the food web directly and indirectly affects other organisms within the food web.

Katie Hale (CSUF;Biological Sciences)

2007-07-14

153

Chain or Web?  

NSDL National Science Digital Library

This reference provides a brief description of marine food webs. It presents food web terminology, explains the relationship between food chains and food webs, and introduces the concept of microbial loops.

154

Web Mining: Machine Learning for Web Applications.  

ERIC Educational Resources Information Center

Presents an overview of machine learning research and reviews methods used for evaluating machine learning systems. Ways that machine-learning algorithms were used in traditional information retrieval systems in the "pre-Web" era are described, and the field of Web mining and how machine learning has been used in different Web mining applications…

Chen, Hsinchun; Chau, Michael

2004-01-01

155

Web Mining: Machine Learning for Web Applications.  

ERIC Educational Resources Information Center

|Presents an overview of machine learning research and reviews methods used for evaluating machine learning systems. Ways that machine-learning algorithms were used in traditional information retrieval systems in the "pre-Web" era are described, and the field of Web mining and how machine learning has been used in different Web mining applications…

Chen, Hsinchun; Chau, Michael

2004-01-01

156

Discovering Appearance Information from the Web  

Microsoft Academic Search

We have proposed a method to extract linguistic description about a geographical feature's appearance by mining the Web based on its name for route guidance or universal access so far. This method does not, however, depend on the specific domain (geographical features) and so we found that this method might be also applicable to the other domains (general objects). In

Shun HATTORI; Taro TEZUKA; Katsumi TANAKA

2007-01-01

157

Creature Feature: Vampire Bats  

NSDL National Science Digital Library

This Web site from National Geographic (last mentioned in the October 11, 2002 Scout Report) offers a short multimedia introduction to vampire bats. Geared toward younger kids, this site includes vampire bat audio and video files, Fun Facts in the form of a brief but educational article, a map of vampire bat global distribution, links to bat-related Web sites, and an email postcard. It may be too late to get much Halloween mileage out of this site, but teachers and students should enjoy this quick and very visual look at a fascinating animal. The site includes links to other National Geographic Creature Features, and could be useful for reports and other activities.

2002-01-01

158

A Research Model: Value Drivers of B2C Company Web Site  

Microsoft Academic Search

The quality of the Web site is very important in that companies can attract customers by promoting various features of the Web site. But so far it is not very clear which features of the Web site are of key significance to the performance of an e-commerce company. In response to this problem, this paper attempts to present an integrated

Qian Tang; Jinghua Huang

2006-01-01

159

WebReport: a World Wide Web based clinical multimedia reporting system.  

PubMed Central

This paper describes WebReport, a World Wide Web (WWW) client for the Image Engine multimedia clinical information system under development at the University of Pittsburgh. WebReport uses advanced HTML features such as frames, forms, tables and inline JPEG image display to provide an easy to use system for retrieving and viewing diagnostic images and reports generated by clinical procedures such as gastrointestinal endoscopy, radiology and surgical pathology. WebReport implements a number of WWW client-side features, such as HTML forms data entry verification and makes extensive use of the JavaScript programming language. The WebReport system uses a number of approaches for ensuring the confidentiality and security of patient data transmitted over the InterNet. Images Figure 2

Lowe, H. J.; Antipov, I.; Walker, W. K.; Polonkey, S. E.; Naus, G. J.

1996-01-01

160

WebCIS: large scale deployment of a Web-based clinical information system.  

PubMed

WebCIS is a Web-based clinical information system. It sits atop the existing Columbia University clinical information system architecture, which includes a clinical repository, the Medical Entities Dictionary, an HL7 interface engine, and an Arden Syntax based clinical event monitor. WebCIS security features include authentication with secure tokens, authorization maintained in an LDAP server, SSL encryption, permanent audit logs, and application time outs. WebCIS is currently used by 810 physicians at the Columbia-Presbyterian center of New York Presbyterian Healthcare to review and enter data into the electronic medical record. Current deployment challenges include maintaining adequate database performance despite complex queries, replacing large numbers of computers that cannot run modern Web browsers, and training users that have never logged onto the Web. Although the raised expectations and higher goals have increased deployment costs, the end result is a far more functional, far more available system. PMID:10566471

Hripcsak, G; Cimino, J J; Sengupta, S

1999-01-01

161

Searchable web sites recommendation  

Microsoft Academic Search

In this paper, we propose a new framework for searchable web sites recommendation. Given a query, our system will recommend a list of searchable web sites ranked by relevance, which can be used to complement the web page results and ads from a search engine. We model the conditional probability of a searchable web site being relevant to a given

Yang Song; Nam Nguyen; Li-wei He; Scott Imig; Robert Rounthwaite

2011-01-01

162

Downloading Hidden Web Content  

Microsoft Academic Search

An ever-increasing amount of information on the Web today is available only through search interfaces: the users have to type in a set of keywords in a search form in order to access the pages from certain Web sites. These pages are often referred to as the Hidden Web or the Deep Web. Since there are no static links to

Alexandros Ntoulas; Petros Zerfos; Junghoo Cho

2004-01-01

163

Creating educational Web sites  

Microsoft Academic Search

This article deals with the issue of educators creating their own educational Web sites equipped with original Web-based teaching materials developed by themselves. As an illustrative example, teaching of English as a foreign language in Japan is taken. Several concrete ideas in building up educational Web sites are illustrated, including an example of Web-based rapid reading exercise pages, an example

J. Azuma

1999-01-01

164

Spider on a web  

NSDL National Science Digital Library

Spiders build web structures from a material they make inside their bodies. The web is used to catch insects and provides a place for the spider to live. Some webs have decorations on them, or thicker areas of web, that may make them more visible to birds and humans and less likely to be damaged.

N/A N/A (None;)

2008-02-16

165

Exploiting the Information Web  

Microsoft Academic Search

The World Wide Web is an increasingly important data source for business decision making; however, extracting information from the Web remains one of the challenging issues related to Web business intelligence applications. To use heterogeneous Web data for decision making, documents containing relevant data must be located, and the data of interest within the documents must be identified and extracted.

Dawn G. Gregg; Steven Walczak

2007-01-01

166

Untangling Your Web.  

ERIC Educational Resources Information Center

|Provides an overview of universal Web design and discusses guidelines developed by the Web access initiative (WAI) that focus on the access needs of Web users with disabilities. Highlights include barriers for people with print disabilities or motor impairments; the role of libraries; and resources to assist Web designers. (LRW)|

Coombs, Norman

2000-01-01

167

Web-Enabled?  

ERIC Educational Resources Information Center

|Discusses problems that users with disabilities, particularly visual impairments, have with Web-based classes. Discusses efforts by the Texas Commission for the Blind to offer Web-based training to visually impaired staff members; and explains how to test a Web site for accessibility and how to make a Web site more accessible and effective. (LRW)|

Kiser, Kim

2001-01-01

168

Models for Food Webs  

Microsoft Academic Search

Food webs are complex systems of many interacting biological species. After summarizing some of their properties, this contribution presents different ways of modeling food webs. It briefly mentions static models and discusses dynamical models and their population dynamics equations. The complexity-stability debate is mentioned, and evolutionary food web models are presented as a natural way of obtaining large stable webs.

Barbara Drossel

169

Políticas del sitio web  

Cancer.gov

En el sitio web del NCI se proporcionan enlaces a otros sitios web con fines informativos y para conveniencia del público. Si el usuario selecciona un sitio web externo, saldrá del sitio web del NCI y estará sujeto a las políticas de privacidad y seguridad de dicho sitio.

170

The Wireless Web  

NSDL National Science Digital Library

This special report posted by Scientific American consists of a series of articles on "the latest and greatest technomarvel, the wireless Web." The featured articles, accessable throught the "Sidebar" link at the bottom of the intro page, cover the challenges and achievements particular to wireless technology. After a brief introduction, the special report leads off with "The Internet in Your Hands," which discusses the push for faster speeds and new software and hardware to enable handheld devices to handle more and more different kinds of data. "The Promise and the Perils of WAP" gives the pros and cons of the Wireless Application Protocol, while "The Future Is Here. Or Is It?" is largely skeptical of Web phones. The final article, "The Third-Generation Gap," focuses on the array of technologies all falling under the rubric of third-generation, so called 3G, wireless systems. With clickable sidebars and copious hyperlinks leading to off-site explications of key terms and concepts, this special report is ideal for readers who want to learn more about wireless technology.

Musser, George.; Alpert, Mark.

2000-01-01

171

.NET is coming [Microsoft Web services platform  

Microsoft Academic Search

Discusses the emergence of Microsoft's .NET platform for XML based Web services. .NET has a central role in Microsoft's strategy to integrate the Internet, Web services, building block services, numerous tools for developers, and many other features. .NET has benefited from a several-billion-dollar investment in research. Microsoft's competitors haven't missed the message, as indicated by several recent announcements such as

B. Meyer

2001-01-01

172

Harvesting Image Databases from the Web  

Microsoft Academic Search

The objective of this work1 is to automatically generate a large number of images for a specified object class (for ex- ample, penguin). A multi-modal approach employing both text, meta data and visual features is used to gather many, high-quality images from the web. Candidate images are obtained by a text based web search querying on the object identifier (the

Florian Schroff; Antonio Criminisi; Andrew Zisserman

2007-01-01

173

Web based peer assessment: attitude and achievement  

Microsoft Academic Search

The specific features of the Web-based peer assessment are to utilize Internet resources to facilitate contacts between individuals and information, to assist in brainstorming among individuals, and to generate more meaningful learning at the higher education level. In this research, authors focus predominantly on attitudes of computer science students toward Web-based peer assessment using NetPeas as the interactive channel and

Sunny San-Ju Lin; E. Z.-F. Liu; Shyan-Ming Yuan

2001-01-01

174

Web Reef Advisory System  

NSDL National Science Digital Library

The Web Reef Advisory System (WRAS) was developed by ReefBase and Reef Check, in collaboration with the Coastal Resources Center at the University of Rhode Island and the Department of Biological Sciences at the University of Southern California, as "an online application to input, view, and analyse Reef Check survey data. It calculates indicators of how good or bad a shape a particular reef is in, and what the underlying causes may be, based on Reef Check surveys." WRAS allows users to view, analyze, and add (registration required) data. Please note that site users must complete a free and brief registration process before they are granted full access to the Reef Check website. Other site offerings include an interactive Reef Check GIS feature (see website for browser requirements), and The Reef Check Barometer of Global Reef Condition which provides assessments of different regions based on Reef Check Indicators.

175

Invasive mutualists erode native pollination webs.  

PubMed

Plant-animal mutualisms are characterized by weak or asymmetric mutual dependences between interacting species, a feature that could increase community stability. If invasive species integrate into mutualistic webs, they may alter web structure, with consequences for species persistence. However, the effect of alien mutualists on the architecture of plant-pollinator webs remains largely unexplored. We analyzed the extent of mutual dependency between interacting species, as a measure of mutualism strength, and the connectivity of 10 paired plant-pollinator webs, eight from forests of the southern Andes and two from oceanic islands, with different incidences of alien species. Highly invaded webs exhibited weaker mutualism than less-invaded webs. This potential increase in network stability was the result of a disproportionate increase in the importance and participation of alien species in the most asymmetric interactions. The integration of alien mutualists did not alter overall network connectivity, but links were transferred from generalist native species to super-generalist alien species during invasion. Therefore, connectivity among native species declined in highly invaded webs. These modifications in the structure of pollination webs, due to dominance of alien mutualists, can leave many native species subject to novel ecological and evolutionary dynamics. PMID:18271628

Aizen, Marcelo A; Morales, Carolina L; Morales, Juan M

2008-02-01

176

Invasive Mutualists Erode Native Pollination Webs  

PubMed Central

Plant–animal mutualisms are characterized by weak or asymmetric mutual dependences between interacting species, a feature that could increase community stability. If invasive species integrate into mutualistic webs, they may alter web structure, with consequences for species persistence. However, the effect of alien mutualists on the architecture of plant–pollinator webs remains largely unexplored. We analyzed the extent of mutual dependency between interacting species, as a measure of mutualism strength, and the connectivity of 10 paired plant–pollinator webs, eight from forests of the southern Andes and two from oceanic islands, with different incidences of alien species. Highly invaded webs exhibited weaker mutualism than less-invaded webs. This potential increase in network stability was the result of a disproportionate increase in the importance and participation of alien species in the most asymmetric interactions. The integration of alien mutualists did not alter overall network connectivity, but links were transferred from generalist native species to super-generalist alien species during invasion. Therefore, connectivity among native species declined in highly invaded webs. These modifications in the structure of pollination webs, due to dominance of alien mutualists, can leave many native species subject to novel ecological and evolutionary dynamics.

Aizen, Marcelo A; Morales, Carolina L; Morales, Juan M

2008-01-01

177

Sensor Web Oriented Web-Based GIS  

Microsoft Academic Search

Web-Based GIS has brought a lot of convenience to the public. However, traditional Web-Based GIS cannot meet the needs in\\u000a applications that request for many different data types and real-time updates. A Sensor Web is a computer accessible network\\u000a of many, spatially distributed devices using sensors to monitor conditions at different locations. In this paper we demonstrate\\u000a the concept of

Shaoqing Shen; Xiao Cheng; Peng Gong

2008-01-01

178

WebMIRS: web-based medical information retrieval system  

NASA Astrophysics Data System (ADS)

At the Lister Hill National Center for Biomedical Communications, a research and development division of the National Library of Medicine (NLM), we are developing a prototype multimedia database system to provide World Wide Web access to biomedical databases. WebMIRS (Web-based Medical Information Retrieval System) will allow access to databases containing text and images and will allow database query by standard SQL, by image content, or by a combination of the two. The system is being developed in the form of Java applets, which will communicate with the Informix DBMS on an NLM Sun workstation running the Solaris operating system. The system architecture will allow access from any hardware platform, which supports a Java-enabled Web browser, such as Netscape or Internet Explorer. Initial databases will include data from two national health surveys conducted by the National Center for Health Statistics (NCHS), and will include x-ray images from those surveys. In addition to describing in- house research in database access systems, this paper describes ongoing work toward querying by image content. Image content search capability will include capability to search for x-ray images similar to an input image with respect to vertebral morphometry used to characterize features such as fractures and disc space narrowing.

Long, L. R.; Pillemer, Stanley R.; Lawrence, Reva C.; Goh, Gin-Hua; Neve, Leif; Thoma, George R.

1997-12-01

179

The Web Robots Pages  

NSDL National Science Digital Library

Martin Koster, a software engineer working in the United Kingdom, maintains this website about Web robots. Web robots, also known as Web Wanderers, Crawlers, or Spiders, are "programs that traverse the Web automatically." The website provides information on how Web robots operate, how they feed search engines, and ways to steer them away from (or to) your pages. Also available from this website is a database of currently known robots, with descriptions and contact details. For more information on technical aspects of designing, building, and operating Web robots, visitors can read discussions from an archived mailing list, browse some older articles and papers posted, or follow links to related websites.

Koster, Martin.

180

Presence of pro-tobacco messages on the Web.  

PubMed

Ignored in the finalized Master Settlement Agreement (National Association of Attorneys General, 1998), the unmonitored, unregulated World Wide Web (Web) can operate as a major vehicle for delivering pro-tobacco messages, images, and products to millions of young consumers. A content analysis of 318 randomly sampled pro-tobacco Web sites revealed that tobacco has a pervasive presence on the Web, especially on e-commerce sites and sites featuring hobbies, recreation, and "fetishes." Products can be ordered online on nearly 50% of the sites, but only 23% of the sites included underage verification. Further, only 11% of these sites contain health warnings. Instead, pro-tobacco sites frequently associate smoking with "glamorous" and "alternative" lifestyles, and with images of young males and young (thin, attractive) females. Finally, many of the Web sites offered interactive site features that are potentially appealing to young Web users. Recommendations for future research and counterstrategies are discussed. PMID:12356288

Hong, Traci; Cody, Michael J

181

WEB-WAP based telecare.  

PubMed Central

We have developed two telecare applications based on mobile telephony (WAP) and WEB. The first can be used to request Basic Life Support (BLS) guidelines any time by using a WAP device and to teach people and non-professionals involved in health care emergency situations. The second is a WEB-WAP based tool for medical data retrieval and at-home health care monitoring of chronically ill patients with congestive heart failure (CHF) or diabetes. Medical education content related to these diseases is available on the WEB and on the WAP device. The WAP application uses the features found in the last generation of mobile phones such as better multimedia information presentations, better interactivity capabilities, and enhanced ease of use. Based on these two applications, a promising platform is offered for developing applications in health care, home care, medical monitoring and health education ensuring continuity of care. In the paper we present the preliminary results of a pilot test at Thessaloniki University (Greece) where the WEB-WAP based tool is used to monitor patients with diabetes or CHF.

DeLeo, Gianluca; Krishna, Santosh; Balas, E. Andrew; Maglaveras, Nicos; Boren, Suzanne Austin; Beltrame, Francesco; Fato, Marco

2002-01-01

182

Mobile Communities - Requirements and Features for Success  

Microsoft Academic Search

Advancements in mobile technologies and decreasing charges are starting to leverage the mobile usage of the internet and its applications. This paper investigates mobile communities and explores requirements and features that make them attractive in the context of constrained mobile devices and existing Web communities. It comprises a comparison between virtual and mobile communities, a survey to identify necessary features

Sarah Denis Heldt; Gregor Broll; Philipp Lehmann

183

SEARCHING THE WEB: THE PUBLIC AND THEIR QUERIES  

Microsoft Academic Search

In studying actual Web searching by the public at large,we analyzed over one million Web queries by users of the Excite search engine.We found that most people use few search terms, few modified queries, view few Web pages, and rarely use advanced search features. A small number of search terms are used with high frequency,and a great many terms are

Amanda Spink; Dietmar Wolfram; Major B. J. Jansen; Tefko Saracevic

2001-01-01

184

Web 2.0 applications in top Chinese university libraries  

Microsoft Academic Search

Purpose – This paper aims to explore the status and construction pattern of Web 2.0 technologies employed in top Chinese university libraries, their functionalities and features. Design\\/methodology\\/approach – A combination of online survey and content analysis methodology is applied to a sample of 38 top Chinese university libraries' web sites. The Web 2.0 tools are categorized by generally accepted standards

Zhiping Han; Yan Quan Liu

2010-01-01

185

Fun With Food Webs  

NSDL National Science Digital Library

This set of online activities consists of matching games about meadow, arctic and pond food webs. Intended for younger students, each game involves placing images of various plants and animals into their proper places in the food webs.

186

Web Applications With Django  

Microsoft Academic Search

\\u000a Django is a modern Python web framework that redefined web development in the Python world. A fullstack approach, pragmatic\\u000a design, and superb documentation are some of the reasons for its success.

Josh Juneau; Jim Baker; Victor Ng; Leo Soto; Frank Wierzbicki

187

The RCSB Protein Data Bank: redesigned web site and web services  

PubMed Central

The RCSB Protein Data Bank (RCSB PDB) web site (http://www.pdb.org) has been redesigned to increase usability and to cater to a larger and more diverse user base. This article describes key enhancements and new features that fall into the following categories: (i) query and analysis tools for chemical structure searching, query refinement, tabulation and export of query results; (ii) web site customization and new structure alerts; (iii) pair-wise and representative protein structure alignments; (iv) visualization of large assemblies; (v) integration of structural data with the open access literature and binding affinity data; and (vi) web services and web widgets to facilitate integration of PDB data and tools with other resources. These improvements enable a range of new possibilities to analyze and understand structure data. The next generation of the RCSB PDB web site, as described here, provides a rich resource for research and education.

Rose, Peter W.; Beran, Bojan; Bi, Chunxiao; Bluhm, Wolfgang F.; Dimitropoulos, Dimitris; Goodsell, David S.; Prlic, Andreas; Quesada, Martha; Quinn, Gregory B.; Westbrook, John D.; Young, Jasmine; Yukich, Benjamin; Zardecki, Christine; Berman, Helen M.; Bourne, Philip E.

2011-01-01

188

Psych Web  

NSDL National Science Digital Library

Created and maintained by Georgia Southern professor of psychology Russell Dewey, this Website offers a wealth of materials for students and researchers in the general field of psychology. Perhaps the site's most impressive feature is a searchable journals database offering a directory of annotated links to hundreds of online journals in psychology and related fields -- some of which offer free, full-text access. But there's a great deal more on the site as well, including annotated links to metasites in the field and APA style guidelines and tutorials; links to departments of psychology around the world; and a directory of annotated resources on various subfields and related topics such as statistics, social psychology, abnormal psychology, language and speech, memory, testing and assessment, behavioral psychology, career issues, cognitive science, and hundreds of others. There are also instructional materials on specific topics posted here such as hypnosis and lucid dreaming, sports psychology, psychology of religion, and cognitive therapy. Definitely a site for any undergraduate or graduate student of psychology to visit and bookmark.

189

WebQuest.org  

NSDL National Science Digital Library

You've arrived at the most complete and current source of information about the WebQuest Model. A WebQuest is an inquiry-oriented lesson format in which most or all the information that learners work with comes from the web. This website can help you learn how to create and implement your own WebQuests as an alternate to a lecture-type content delivery style.

2008-11-12

190

Web Usage Mining  

Microsoft Academic Search

\\u000a In recent years, e-businesses have been profiting from recent advances on the analysis of web customer behaviour. For decades\\u000a experts have debated on ways of presenting the content or structure in a web site in order to captivate the attention of the\\u000a web user in the web intelligence community. A solution to this could help boost sales in an e-commerce

Pablo E. Roman; Gastón L’Huillier; Juan Velásquez

191

Benchmarking web site functions  

Microsoft Academic Search

Purpose – To measure, classify and compare web site functions' development. Design\\/methodology\\/approach – The objectives were achieved by developing a methodology to measure, classify and compare web site functions development. The measurement was based on the presence (or absence) of 91 web site components. The classification was achieved using an applied correspondence analysis. The comparison was performed with respect to

Hugues Boisvert; Marie-Andrée Caron

2006-01-01

192

Explorations on Web Usability  

Microsoft Academic Search

The area of web usability has long intrigued researchers. It has been widely accepted that for a website to be successful, the level of usability has to be high. The reason is because of poorly designed website. While many web designers largely fall on their prior experience to tell if a web site design is good or bad, there is

K. K Teoh; T. S. Ong; P. W. Lim; Rachel P. Y. Liong; C. Y. Yap

2009-01-01

193

Implementation of Web Crawler  

Microsoft Academic Search

The World Wide Web is an interlinked collection of billions of documents formatted using HTML. Ironically the very size of this collection has become an obstacle for information retrieval. The user has to shift through scores of pages to come upon the information he\\/she desires. Web crawlers are the heart of search engines. Web crawlers continuously keep on crawling the

Pooja Gupta; Kalpana Johari

2009-01-01

194

Evaluating Web Usability  

ERIC Educational Resources Information Center

|Web usability focuses on design elements and processes that make web pages easy to use. A website for college students was evaluated for underutilization. One-on-one testing, focus groups, web analytics, peer university review and marketing focus group and demographic data were utilized to conduct usability evaluation. The results indicated that…

Snider, Jean; Martin, Florence

2012-01-01

195

Web Object Retrieval  

Microsoft Academic Search

The primary function of current Web search engines is essentially relevance ranking at the document level. However, myriad structured information about real-world objects embedded in static Web pages and online Web databases. In this paper, we propose a paradigm shift to enable searching at the object level. In traditional information retrieval models, documents are taken as the retrieval units and

Zaiqing Nie; Yunxiao Ma; Shuming Shi; Ji-Rong Wen; Wei-Ying Ma

2006-01-01

196

Multimedia Web Searching Trends.  

ERIC Educational Resources Information Center

|Examines and compares multimedia Web searching by Excite and FAST search engine users in 2001. Highlights include audio and video queries; time spent on searches; terms per query; ranking of the most frequently used terms; and differences in Web search behaviors of U.S. and European Web users. (Author/LRW)|

Ozmutlu, Seda; Spink, Amanda; Ozmutlu, H. Cenk

2002-01-01

197

Which semantic web?  

Microsoft Academic Search

Through scenarios in the popular press and technical papers in the research literature, the promise of the Semantic Web has raised a number of different expectations. These expectations can be traced to three different perspectives on the Semantic Web. The Semantic Web is portrayed as: (1) a universal library, to be readily accessed and used by humans in a variety

Catherine C. Marshall; Frank M. Shipman III

2003-01-01

198

WWW: Neuroscience Web Sites  

ERIC Educational Resources Information Center

|The human brain contains an estimated 100 billion neurons, and browsing the Web, one might be led to believe that there's a Web site for every one of those cells. It's no surprise that there are lots of Web sites concerning the nervous system. After all, the human brain is toward the top of nearly everyone's list of favorite organs and of…

Liu, Dennis

2006-01-01

199

A web of concepts  

Microsoft Academic Search

We make the case for developing a web of concepts by start- ing with the current view of web (comprised of hyperlinked pages, or documents, each seen as a bag of words), extract- ing concept-centric metadata, and stitching it together to create a semantically rich aggregate view of all the informa- tion available on the web for each concept instance.

Nilesh N. Dalvi; Ravi Kumar; Bo Pang; Raghu Ramakrishnan; Andrew Tomkins; Philip Bohannon; Sathiya Keerthi; Srujana Merugu

2009-01-01

200

Migrating Web Applications  

Microsoft Academic Search

Web application development frameworks like the Java Server Pages framework (JSP), provide web applications with essential functions such as maintaining state informa- tion across the application and access control. In the fast paced world of web applications, new frameworks are intro- duced and old ones are updated frequently. A framework is chosen during the initial phases of the project and

Ahmed E. Hassan; Richard C. Holt

201

A structural and content-based analysis for Web filtering  

Microsoft Academic Search

With the proliferation of objectionable materials (e.g. pornography, violence, drugs, etc.) available on the WWW, there is an urgent need for effective countermeasures to protect children and other unsuspecting users from exposure to such materials. Using pornographic Web pages as a case study, this paper presents a thorough analysis of the distinguishing features of such Web pages. The objective of

Pui Y. Lee; S. C. Hui; Alvis Cheuk M. Fong

2003-01-01

202

Healthy persuasion: web sites that you can trust  

Microsoft Academic Search

Health websites are an abundant and frequently used source of information and advice. How are users of such sites persuaded to trust the advice they read and to act upon it? In this short paper we outline a model of trust in online health advice and highlight the key features in relation to both traditional web 1.0 websites and web

Elizabeth Sillence; Pam Briggs; Peter R. Harris

203

Searching the Web: The Public and Their Queries.  

ERIC Educational Resources Information Center

Reports findings from a study of searching behavior by over 200,000 users of the Excite search engine. Analysis of over one million queries revealed most people use few search terms, few modified queries, view few Web pages, and rarely use advanced search features. Concludes that Web searching by the public differs significantly from searching of…

Spink, Amanda; Wolfram, Dietmar; Jansen, Major B. J.; Saracevic, Tefko

2001-01-01

204

How users assess Web pages for information seeking  

Microsoft Academic Search

In this paper, we investigate the criteria used by online searchers when assessing the relevance of web pages for information-seeking tasks. Twenty four participants were given three tasks each, and indicated the features of web pages which they employed when deciding about the usefulness of the pages in relation to the tasks. These tasks were presented within the context of

Anastasios Tombros; Ian Ruthven; Joemon M. Jose

2005-01-01

205

Selecting a Web 2.0 Presentation Tool  

ERIC Educational Resources Information Center

|Web-based presentation tools are sometimes referred to as "next generation presentation tools" (EDUCAUSE, 2010). At the most basic level, these tools are simply online versions of traditional presentation software, such as Microsoft's PowerPoint or Apple's Keynote, but some services offer features like web-based collaboration, online presentation…

Hodges, Charles B.; Clark, Kenneth

2011-01-01

206

Using Maple and the Web to grade mathematics tests  

Microsoft Academic Search

We present AIM, a web-based system designed to administer graded tests with mathematical content. Its main features are: use of Maple as the engine and implementation language; several methods of giving partial credit; various feedback mechanisms; randomisation of quizzes and questions; versatility in question and quiz design; extensive grade reporting and monitoring capabilities; ability to collect surveys; web interface for

S. Klai; T. Kolokolnikov; N. van den Bergh

2000-01-01

207

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

208

Process-aware continuation management in web applications  

Microsoft Academic Search

Web applications are subject to an interaction challenge not found in other user interfaces: In addition to the widgets that web pages are built of, browsers provide further navigation features such as the Back and Forward buttons that are beyond the developer's control. Continuations have been suggested as a means to cope with the arbitrary navigation patterns that users may

Volker Gruhn; Marco Buss

2012-01-01

209

WebCT: A Major Shift of Emphasis  

ERIC Educational Resources Information Center

|The evaluation reports in this series usually feature several products at once. The current review, however, comes at a time when one of the most widely used (and expensive) online learning management systems is undergoing a major change in its marketing strategy and corporate focus. "WebCT" is currently evolving to a new version ("WebCT Vista"),…

Morningstar, Barbara; Schubert, Jeremy; Thibeault, Kristine

2004-01-01

210

Challenges of the Sensor Web for disaster management  

Microsoft Academic Search

Sensor Web has been widely promoted and its application has evolved from original military usages to current ubiquitous civil and commercial applications. Its emergence has become a great strength to facilitate the Digital Earth concept. Although many Sensor Web applications and methods have been proposed to assist disaster management, they are not well suited to the unique features and application

Fei Wang; Hongyong Yuan

2010-01-01

211

Web Searching: A Quality Measurement Perspective  

NASA Astrophysics Data System (ADS)

The purpose of this paper is to describe various quality measures for search engines and to ask whether these are suitable. We especially focus on user needs and their use of Web search engines. The paper presents an extensive literature review and a first quality measurement model, as well. Findings include that Web search engine quality can not be measured by just retrieval effectiveness (the quality of the results), but should also consider index quality, the quality of the search features and Web search engine usability. For each of these sections, empirical results from studies conducted in the past, as well as from our own research are presented. These results have implications for the evaluation of Web search engines and for the development of better search systems that give the user the best possible search experience.

Lewandowski, D.; Höchstötter, N.

212

From On-Air to Online World: Examining the Content and Structures of Broadcast TV Stations' Web Sites  

Microsoft Academic Search

This article examined the TV stations' application of the Web features that presumably would contribute to the effectiveness of their Web sites from both the organizational and consumer's perspectives. It also explored whether certain market factors are associated with the availability of these features. The content analysis found that news-related content played an important role on these Web sites and

Sylvia M. Chan-Olmsted; Jung Suk Park

2000-01-01

213

Web-Scale Search-Based Data Extraction and Integration.  

National Technical Information Service (NTIS)

In the current age of abundant, digitized geographic data, the classic, manual approach to geospatial feature discovery and gazetteer creation is cost-prohibitive. While geographic data has become increasingly prevalent on the open Web, it remains largely...

G. Kabra K. C. Chang T. Shuck

2011-01-01

214

Drying of fiber webs  

DOEpatents

A process and an apparatus for high-intensity drying of fiber webs or sheets, such as newsprint, printing and writing papers, packaging paper, and paperboard or linerboard, as they are formed on a paper machine. The invention uses direct contact between the wet fiber web or sheet and various molten heat transfer fluids, such as liquified eutectic metal alloys, to impart heat at high rates over prolonged durations, in order to achieve ambient boiling of moisture contained within the web. The molten fluid contact process causes steam vapor to emanate from the web surface, without dilution by ambient air; and it is differentiated from the evaporative drying techniques of the prior industrial art, which depend on the uses of steam-heated cylinders to supply heat to the paper web surface, and ambient air to carry away moisture, which is evaporated from the web surface. Contact between the wet fiber web and the molten fluid can be accomplished either by submersing the web within a molten bath or by coating the surface of the web with the molten media. Because of the high interfacial surface tension between the molten media and the cellulose fiber comprising the paper web, the molten media does not appreciately stick to the paper after it is dried. Steam generated from the paper web is collected and condensed without dilution by ambient air to allow heat recovery at significantly higher temperature levels than attainable in evaporative dryers.

Warren, David W. (9253 Glenoaks Blvd., Sun Valley, CA 91352)

1997-01-01

215

Drying of fiber webs  

DOEpatents

A process and an apparatus are disclosed for high-intensity drying of fiber webs or sheets, such as newsprint, printing and writing papers, packaging paper, and paperboard or linerboard, as they are formed on a paper machine. The invention uses direct contact between the wet fiber web or sheet and various molten heat transfer fluids, such as liquefied eutectic metal alloys, to impart heat at high rates over prolonged durations, in order to achieve ambient boiling of moisture contained within the web. The molten fluid contact process causes steam vapor to emanate from the web surface, without dilution by ambient air; and it is differentiated from the evaporative drying techniques of the prior industrial art, which depend on the uses of steam-heated cylinders to supply heat to the paper web surface, and ambient air to carry away moisture, which is evaporated from the web surface. Contact between the wet fiber web and the molten fluid can be accomplished either by submersing the web within a molten bath or by coating the surface of the web with the molten media. Because of the high interfacial surface tension between the molten media and the cellulose fiber comprising the paper web, the molten media does not appreciatively stick to the paper after it is dried. Steam generated from the paper web is collected and condensed without dilution by ambient air to allow heat recovery at significantly higher temperature levels than attainable in evaporative dryers. 6 figs.

Warren, D.W.

1997-04-15

216

WebWhacker  

NSDL National Science Digital Library

ForeFront Group's WebWhacker is a tool designed to reduce the user's dependency on an Internet connection while delving deeply into a single Web site. This specialized software can be set to download single Webpages, groups of pages, or entire Web sites, depending on the user-controlled configuration options. The downloads, called "whacks", include both text (HTML) and images, and are stored on the local desktop. The downloaded pages are re-linked locally for browsing on the desktop with any Web browser. The desktop version of the site is a mirror image of the information on the original Web site. WebWhacker is a great tool for Internet demonstrations from sites with slow or unstable Internet connections. WebWhacker is a commercial product, but free 30 day trial copies are available for downloading for Windows 3.1, Windows 95, and Macintosh platforms.

217

Adding value to Web-OPACs  

Microsoft Academic Search

Web-OPACs not only offer simplified access to library holdings for end-users but also enable librarians to add value to their catalogue data. One feature which has become almost a standard for new library software is including links to full-text or multimedia documents corresponding to a particular citation. Other features which have not yet become common but will soon do so

Bernd Harmsen

2000-01-01

218

A French Vocabulary Tutor for the Web.  

ERIC Educational Resources Information Center

Discusses a project to design and implement a small French vocabulary tutor for the World Wide Web. Highlights salient features and design of the tutor and focuses on two variants of a module on technology-related vocabulary that were created using very straightforward html code and JavaScript. (Author/VWL)

Labrie, Gilles

2000-01-01

219

A Representation Language for Multimedia Web Semantic  

Microsoft Academic Search

While the extraction of low level multimedia features has been largely studied, the automatic extraction of high level descriptions is still an open research field. Moreover, as semantic Web languages, which are based on description logics, are conceived for describing all kinds of resources, specific extensions of semantic languages for describing multimedia resources are needed. Descriptors offering enough expressivity to

Ahmed AZOUGH; Alexandre DELTEIL; Mohand-Said HACID; Fabien DE MARCHI

2007-01-01

220

Web hosted assessment - possibilities and policy  

Microsoft Academic Search

This paper presents a categorisation of Web hosted assessment systems and then uses this to produce an outline specification for a fully featured system, against which other systems can be evaluated. It concludes by considering the logistics of using such systems for summative assessment.

Fintan Culwin

1998-01-01

221

Web hosted assessment—possibilities and policy  

Microsoft Academic Search

This paper presents a categorisation of Web hosted assessment systems and then uses this to produce an outline specification for a fully featured system, against which other systems can be evaluated. It concludes by considering the logistics of using such systems for summative assessment.

Fintan Culwin

1998-01-01

222

School Web Site of the Month  

ERIC Educational Resources Information Center

This article features "Tech Directions" School Web Site of the Month. The website (http://satellite.stcharles.k12.la.us) was produced by technology education students at the Satellite Center of St. Charles Parish Public Schools in Luling, Louisiana. The Satellite Center focuses on the career paths projected to expand the most over the next decade.…

Tech Directions, 2008

2008-01-01

223

Teaching Hypertext and Hypermedia through the Web.  

ERIC Educational Resources Information Center

This paper describes a World Wide Web-based introductory course titled "Hypermedia Structures and Systems," offered as an optional part of the curriculum in computing science at the Eindhoven University of Technology (Netherlands). The technical environment for the current (1996) edition of the course is presented, which features automatic…

de Bra, Paul M. E.

224

School Web Site of the Month  

ERIC Educational Resources Information Center

|This article features "Tech Directions" School Web Site of the Month. The website (http://satellite.stcharles.k12.la.us) was produced by technology education students at the Satellite Center of St. Charles Parish Public Schools in Luling, Louisiana. The Satellite Center focuses on the career paths projected to expand the most over the next…

Tech Directions, 2008

2008-01-01

225

Library Web OPACs in Pakistan: An Overview  

ERIC Educational Resources Information Center

Purpose: This paper aims to analyse features and functions of indigenously developed web-based catalogues of academic, special and national libraries of Pakistan. Design/methodology/approach: The assessment of 16 OPACs is based on a 91-item checklist developed with the help of previous studies conducted in other countries. Findings: The paper…

Mahmood, Khalid

2008-01-01

226

Dynamic Map Display in Web OPAC: An Experiment at Wichita State University Libraries  

Microsoft Academic Search

Adding more features to the web OPAC or making the Integrated Library Management Systems (ILMS) more compatible to external web services has been a tendency in recent years. Wichita State University (WSU) Libraries' Dynamic Map Project enriched the bibliographic information by displaying dynamic map(s) for each individual record in the web OPAC. Dynamic mapping provides a customized map display in

Hongfei Li; Sai Deng; Nancy Deyoe

227

Requirements for a Distributed Authoring and Versioning Protocol for the World Wide Web  

Microsoft Academic Search

Current World Wide Web (WWW or Web) standards provide simple support for applications which allow remote editing of typed data. In practice, the existing capabilities of the WWW have proven inadequate to support efficient, scalable remote editing free of overwriting conflicts. This document presents a list of features in the form of requirements for a Web Distributed Authoring and Versioning

E. Whitehead; U. C. Irvine; D. Durand

1998-01-01

228

Students' Reaction to WebCT: Implications for Designing On-Line Learning Environments  

ERIC Educational Resources Information Center

|There is a growing number of web-based and web-assisted course development tools and products that can be used to create on-line learning environment. The utility of these products, however, varies greatly depending on their feasibility, prerequisite infrastructure, technical features, interface, and course development and management tools. WebCT…

Osman, Mohamed Eltahir

2005-01-01

229

Cooperative Research on Web Data Management at UFMG and UFAM - A Brief Report  

Microsoft Academic Search

The World Wide Web has become a huge repository of data of interest for a variety of application domains. However, the same features that have made the Web so useful and popular also impose important restrictions on the way the data it contains can be manipulated. Particularly, in the traditional Web scenario, there is an inherent difficulty in gaining access

Alberto H. F. Laender; Altigran Soares Da Silva

2008-01-01

230

Citation Analysis: Comparison of Web of Science®, Scopus™, SciFinder®, and Google Scholar  

Microsoft Academic Search

In recent years, numerous articles have compared the coverage, features, and citation analysis capabilities of Scopus™ and Google Scholar with Web of Science®, a Web-based version of Science Citation Index. This article goes a step further and compares the citation analysis potential of four databases: Web of Science, Scopus, SciFinder, and Google Scholar. Each database presents its own strengths and

Jie Li; Judy F. Burnham; Trey Lemley; Robert M. Britton

2010-01-01

231

Collaborative Middle School Geometry through Blogs and Other Web 2.0 Technologies  

ERIC Educational Resources Information Center

|This paper explores the use of blogs, a simple application of Web 2.0 technologies, in middle school geometry instruction. Specifically, it provides an overview of the interactive features of Web 2.0 technologies and the feasibility of using Web 2.0 technologies in geometry teaching and learning, as well as a proposed model for creating a…

Hossain, Mokter; Wiest, Lynda R.

2013-01-01

232

Making Web-Based Tables Accessible for Users of Screen Readers.  

ERIC Educational Resources Information Center

|Summarizes results from a study of problems blind people using screen readers and Web browsers experienced when reading tables on the World Wide Web. Explains accessibility factors including complexity of layout, use of HTML programming, features of screen-reading software, and user variables; and makes recommendations for Web-based tables,…

Amtmann, Dagmar; Johnson, Kurt; Cook, Debbie

2002-01-01

233

Optimizing Web Structures Using Web Mining Techniques  

Microsoft Academic Search

With vibrant and rapidly growing web, website complexity is constantly increasing, making it more difficult for users to quickly\\u000a locate the information they are looking for. This, on the other hand, becomes more and more important due to the widespread\\u000a reliance on the many services available on the Internet nowadays. Web mining techniques have been successfully used for quite\\u000a some

Jonathan Jeffrey; Peter Karski; Björn Lohrmann; Keivan Kianmehr; Reda Alhajj

2007-01-01

234

Web Accessibility and Guidelines  

NASA Astrophysics Data System (ADS)

Access to, and movement around, complex online environments, of which the World Wide Web (Web) is the most popular example, has long been considered an important and major issue in the Web design and usability field. The commonly used slang phrase ‘surfing the Web’ implies rapid and free access, pointing to its importance among designers and users alike. It has also been long established that this potentially complex and difficult access is further complicated, and becomes neither rapid nor free, if the user is disabled. There are millions of people who have disabilities that affect their use of the Web. Web accessibility aims to help these people to perceive, understand, navigate, and interact with, as well as contribute to, the Web, and thereby the society in general. This accessibility is, in part, facilitated by the Web Content Accessibility Guidelines (WCAG) currently moving from version one to two. These guidelines are intended to encourage designers to make sure their sites conform to specifications, and in that conformance enable the assistive technologies of disabled users to better interact with the page content. In this way, it was hoped that accessibility could be supported. While this is in part true, guidelines do not solve all problems and the new WCAG version two guidelines are surrounded by controversy and intrigue. This chapter aims to establish the published literature related to Web accessibility and Web accessibility guidelines, and discuss limitations of the current guidelines and future directions.

Harper, Simon; Yesilada, Yeliz

235

Using Open Web APIs in Teaching Web Mining  

ERIC Educational Resources Information Center

|With the advent of the World Wide Web, many business applications that utilize data mining and text mining techniques to extract useful business information on the Web have evolved from Web searching to Web mining. It is important for students to acquire knowledge and hands-on experience in Web mining during their education in information systems…

Chen, Hsinchun; Li, Xin; Chau, M.; Ho, Yi-Jen; Tseng, Chunju

2009-01-01

236

Web++: A System for Fast and Reliable Web Service  

Microsoft Academic Search

We describe the design of a system for a fast and reliable HTTP service termed Web .W eb achieves high re- liability by dynamically replicating Web data among mul- tiple Web servers. Web selects a server which is avail- able and that is expected to provide the fastest response time. Furthermore, Web guarantees data delivery, pro- vided that at least

Radek Vingralek; Yuri Breitbart; Mehmet Sayal; Peter Scheuermann

1999-01-01

237

Enabling Blind Web Users to Create Accessible Web Content  

Microsoft Academic Search

Browsing the web is inecient for blind web users because of persistent accessibility prob- lems. While previous eorts have tried to improve web accessibility through developer awareness, technological improvements, and legislation, these attempts have failed to adequately address accessibility concerns. Blind web users have proven quite adept at overcoming the shortcom- ings of the web and existing tools, but have

P. Bigham

238

Making web annotations persistent over time  

SciTech Connect

As Digital Libraries (DL) become more aligned with the web architecture, their functional components need to be fundamentally rethought in terms of URIs and HTTP. Annotation, a core scholarly activity enabled by many DL solutions, exhibits a clearly unacceptable characteristic when existing models are applied to the web: due to the representations of web resources changing over time, an annotation made about a web resource today may no longer be relevant to the representation that is served from that same resource tomorrow. We assume the existence of archived versions of resources, and combine the temporal features of the emerging Open Annotation data model with the capability offered by the Memento framework that allows seamless navigation from the URI of a resource to archived versions of that resource, and arrive at a solution that provides guarantees regarding the persistence of web annotations over time. More specifically, we provide theoretical solutions and proof-of-concept experimental evaluations for two problems: reconstructing an existing annotation so that the correct archived version is displayed for all resources involved in the annotation, and retrieving all annotations that involve a given archived version of a web resource.

Sanderson, Robert [Los Alamos National Laboratory; Van De Sompel, Herbert [Los Alamos National Laboratory

2010-01-01

239

Web Personalisation - An Overview  

Microsoft Academic Search

The Web has become a universal interface in a diverse range of applications seamlessly interconnected through the Internet,\\u000a intranets and extranets. The Web users, however, have vastly different needs and their skills and cognitive abilities are\\u000a also vary widely. Thus, on the Web, one-size does not fit all its users. To realise the full potential of this versatile and\\u000a ubiquitous

San Murugesan; Annamalai Ramanathan

2001-01-01

240

Web portal quality  

Microsoft Academic Search

The purpose of this study is to review the characteristics of Web portal quality from the end-users' perspective and to propose a Web portal quality model. In this study, the quality of web portals consists of three basic components: the information content (e.g., accuracy and applicability), the physical medium (e.g., timeliness and speed), and the service (e.g., reliability and responsiveness

Junghyun Nam

2009-01-01

241

Semantic Web for Search  

NASA Astrophysics Data System (ADS)

Semantic Web data seems like a promising source of information for improving search. While there is some literature about how semantic data should be used to enhance search, there are no positive conclusions about the best approach. This paper surveys existing approaches to semantic web search, describes adapting a TREC benchmark for evaluation, and proposes a learned representation algorithm for using semantic web data in search.

Gronski, Jessica

242

Virtual Continent in the Classroom: Teaching e-Business Integration Issues with Web-based Technologies  

Microsoft Academic Search

In this extended abstract we outline a Web-based learning approach for e-Business integration issues. We present a virtual toolbox, including an advisable open source tool and Web Service Application Programming Interfaces (WS APIs). By applying a collaborative learning model and by incorporating Web 2.0 features such as Web services, operating with the SOAP protocol, we were able to increase the

Karl Flieder; Mario Fraiß; Michael Korat; Werner Schindling

2007-01-01

243

Web-based color education with an emphasis on constructivist's theory  

NASA Astrophysics Data System (ADS)

This study focuses on the ways for providing alternative color education with Web-based instruction. The Web-based color education enhances the effectiveness of learning by integrating the multi-modal features of digital color experiences. The newly developed Web-based education color is designed for applying constructivism as educational pedagogy. This study shows how the web environment can be used as an ideal learning platform for educators and students holding the frame of constructivism.

Kwon, EunSook; Kim, YuJin

2002-06-01

244

A Novel Framework for Web Page Classification Using Two-Stage Neural Network  

Microsoft Academic Search

\\u000a Web page classification is one of the essential techniques for Web mining. This paper presents a framework for Web page classification.\\u000a It is hybrid architecture of neural network PCA (principle components analysis) and SOFM (self-organizing map). In order to\\u000a perform the classification, a web page is firstly represented by a vector of features with different weights according to\\u000a the term

Yunfeng Li; Yukun Cao; Qingsheng Zhu; Zhengyu Zhu

2005-01-01

245

Le WebLouvre  

NSDL National Science Digital Library

Le WebLouvre offers a French medieval art demonstration, a collection of well-known paintings from famous artists, and a tour around Paris including the Eiffel Tower and the Champs-Elysees. The tour of includes two options - walking around on your own or a historical guided tour with comments. Le WebLouvre is a Best of the Web '94 contest for the Best Use of Multiple Media. The Web site is the work of primarily one person and is not officially associated with The Louvre Museum in Paris.

246

Web Page Classification Method Using Neural Networks  

NASA Astrophysics Data System (ADS)

Automatic categorization is the only viable method to deal with the scaling problem of the World Wide Web (WWW). In this paper, we propose a news web page classification method (WPCM). The WPCM uses a neural network with inputs obtained by both the principal components and class profile-based features (CPBF). Each news web page is represented by the term-weighting scheme. As the number of unique words in the collection set is big, the principal component analysis (PCA) has been used to select the most relevant features for the classification. Then the final output of the PCA is combined with the feature vectors from the class-profile which contains the most regular words in each class before feeding them to the neural networks. We have manually selected the most regular words that exist in each class and weighted them using an entropy weighting scheme. The fixed number of regular words from each class will be used as a feature vectors together with the reduced principal components from the PCA. These feature vectors are then used as the input to the neural networks for classification. The experimental evaluation demonstrates that the WPCM method provides acceptable classification accuracy with the sports news datasets.

Selamat, Ali; Omatu, Sigeru; Yanagimoto, Hidekazu; Fujinaka, Toru; Yoshioka, Michifumi

247

Volcanic Features  

NSDL National Science Digital Library

Most people will never see the eruption of an active volcano. Even so, evidence of these dramatic displays can be found all over the world. In fact, more can be learned about some aspects of volcanic activity by exploring evidence left by past eruptions than by watching an eruption in progress. This interactive resource adapted from the National Park Service explores a variety of volcanic landforms and features, and describes how they form.

2010-10-25

248

Biodiversity and Conservation: The Web of Life  

NSDL National Science Digital Library

Chicago's Field Museum has dubbed the 2003-2004 school year as "The Year of Biodiversity and Conservation," and invites everyone to join in "exploring, celebrating, and protecting our planet's amazing web of life." Visitors can start the exploring, celebrating, and protecting right here in the well-designed and informative Web site created for the program. Biodiversity basics, conservation issues and efforts, free downloadable lesson plans, and other resources are all on hand. The site also contains an interactive map featuring Field Museum researchers studying biodiversity around the world. This site is also reviewed in the October 17, 2003 NSDL Life Sciences Report.

249

WEB-based GEne SeT AnaLysis Toolkit (WebGestalt): update 2013.  

PubMed

Functional enrichment analysis is an essential task for the interpretation of gene lists derived from large-scale genetic, transcriptomic and proteomic studies. WebGestalt (WEB-based GEne SeT AnaLysis Toolkit) has become one of the popular software tools in this field since its publication in 2005. For the last 7 years, WebGestalt data holdings have grown substantially to satisfy the requirements of users from different research areas. The current version of WebGestalt supports 8 organisms and 201 gene identifiers from various databases and different technology platforms, making it directly available to the fast growing omics community. Meanwhile, by integrating functional categories derived from centrally and publicly curated databases as well as computational analyses, WebGestalt has significantly increased the coverage of functional categories in various biological contexts including Gene Ontology, pathway, network module, gene-phenotype association, gene-disease association, gene-drug association and chromosomal location, leading to a total of 78 612 functional categories. Finally, new interactive features, such as pathway map, hierarchical network visualization and phenotype ontology visualization have been added to WebGestalt to help users better understand the enrichment results. WebGestalt can be freely accessed through http://www.webgestalt.org or http://bioinfo.vanderbilt.edu/webgestalt/. PMID:23703215

Wang, Jing; Duncan, Dexter; Shi, Zhiao; Zhang, Bing

2013-05-23

250

Web-HUMAN: A web-based implementation of the HUMAN Systems Physiology simulation  

NSDL National Science Digital Library

Skidmore College's web-HUMAN web site provides educators with a no-fee, web browser-accessible full implementation of Tom Coleman's classic systems physiology simulation, HUMAN. The model is comprehensive, encompassing 6 major core systems (cardiovascular, respiratory, renal, fluid balance, acid-base balance, and thermoregulatory) and aspects of 3 other systems (nervous, endocrine, and muscle metabolism). In each 1-minute iteration, 137 user-assessable physiological variables can be monitored; simulated experiments can be run by changing one or more of 67 use-alterable physiological and clinical parameters. Web-HUMAN can be employed as an interactive adjunct to systems physiology lecture, as a tool for teaching physiology laboratory, and as a vehicle for independent student work. The site also included extensive on-line help features and a teaching resources section.

PhD Roy S. Meyers (Skidmore College Biology Department)

2003-12-19

251

Web-Based Online Public Access Catalogues of IIT Libraries in India: An Evaluative Study  

ERIC Educational Resources Information Center

|Purpose: The purpose of the paper is to examine the various features and components of web-based online public access catalogues (OPACs) of IIT libraries in India with the help of a specially designed evaluation checklist. Design/methodology/approach: The various features of the web-based OPACs in six IIT libraries (IIT Delhi, IIT Bombay, IIT…

Madhusudhan, Margam; Aggarwal, Shalini

2011-01-01

252

Retail web site interactivity : How does it influence customer satisfaction and behavioral intentions?  

Microsoft Academic Search

Purpose – Since web sites are collection of several features, this paper examines web site interactivity – objective and subjective – at the feature level in terms of three underlying dimensions. The purpose of this paper is to understand the distinction between objective and subjective interactivity and to investigate their effects on customer satisfaction, behavioral intention, and telepresence. Design\\/methodology\\/approach –

Ruby Roy Dholakia; Miao Zhao

2009-01-01

253

Web-Based Online Public Access Catalogues of IIT Libraries in India: An Evaluative Study  

ERIC Educational Resources Information Center

Purpose: The purpose of the paper is to examine the various features and components of web-based online public access catalogues (OPACs) of IIT libraries in India with the help of a specially designed evaluation checklist. Design/methodology/approach: The various features of the web-based OPACs in six IIT libraries (IIT Delhi, IIT Bombay, IIT…

Madhusudhan, Margam; Aggarwal, Shalini

2011-01-01

254

A Collaborative Web-Based Architecture For Sharing ToxCast Data  

EPA Science Inventory

Collaborative Drug Discovery (CDD) has created a scalable platform that combines traditional drug discovery informatics with Web2.0 features. Traditional drug discovery capabilities include substructure, similarity searching and export to excel or sdf formats. Web2.0 features inc...

255

Web-Based Promotions  

Microsoft Academic Search

Numerous business and popular articles continue to appear to stress the importance of the Internet as a powerful and interactive means of communication. As with other media, the web affects viewers' product evaluations and behavioral intentions. This article attempts to understand how students (recently admitted freshmen) form opinions about their school through interaction with the university web site. Multiple studies

Brian V. Larson; Myroslaw J. Kyj

2002-01-01

256

Priors in Web Search  

Microsoft Academic Search

Web search combines information obtained at query time with prior knowledge to form a posterior. This paper focuses on the prior, which we believe is interesting, given the poverty of the query stim- ulus (many of the web queries are no more than a word or two). We propose a learning framework based on the Noisy Channel Model for combining

Michael Bendersky; Kenneth W. Church

2009-01-01

257

Stella Ubaha - Web Designer  

NSDL National Science Digital Library

Stella Ubaha is a Web developer who works with graphic designers to make their ideas show up at FunWorks Web site. She's a whiz at HTML and programming languages like JavaScript, ASP, PHP, CSS, XML, and Action Script.

Center, Education D.

258

About the Web  

Microsoft Academic Search

This article reviews selected magazines and journals of interest to academic librarians that include information about the Web. Reviewed titles include library science titles, general educational titles, and popular titles found on newsstands. The titles reviewed are aimed towards two groups of librarians: those most involved with developing content (such as reference librarians and bibliographers), and those involved with Web

Jill M. Hackenberg; Marilyn K. Moody

1999-01-01

259

Intelligent geospatial web services  

Microsoft Academic Search

A geospatial Web service is a modular application designed to enable the discovery, access, and chaining of geospatial information and services across the Web. Earth science applications are often both computing- and data-intensive that involve diverse sources of data and complex processing functions. It is often not only time-consuming but also difficult to find, obtain, and process heterogeneous geospatial information.

Liping Di; Peisheng Zhao; Wenli Yang; Genong Yu; Peng Yue

2005-01-01

260

Understanding Web Accessibility  

Microsoft Academic Search

The Web is providing unprecedented access to information and interaction for people with disabilities. It provides opportunities to participate in society in ways otherwise not available. With accessible websites, people with disabilities can do ordinary things:children can learn, teenagers can flirt, adults can make a living, seniors can read about their grand- children, and so on. With the Web, people

Shawn Lawton Henry

261

Taming the Tangled Web.  

ERIC Educational Resources Information Center

Describes the Open Knowledge Initiative (OKI) and its use as a resource for higher education institutions interested in developing web-based learning capabilities. Highlights the OKI collaborative effort and its goal to ensure that the web tools it designs are installable and supportable on smaller campuses and by smaller institutions. (GR)

Sturgeon, Julie

2001-01-01

262

Populating the Semantic Web.  

National Technical Information Service (NTIS)

The vision of the Semantic Web is that a vast store of online information 'meaningful to computers will unleash a revolution of new possibilities'. Unfortunately, the vast majority of information on the Web is formatted to be easily read by human users, n...

C. Gazen C. Knoblock K. Lerman S. Minton

2004-01-01

263

Web 2 Nowhere?  

ERIC Educational Resources Information Center

|Web 2.0 seems to be all the rage these days. One cannot go to a library conference and attend presentations or stroll down the halls without hearing some mention of it in magical tones reserved for some great discovery. The excitement surrounding Web 2.0 reminds the author of the frenzy that gripped the country between 1848 and 1855, when…

Shapiro, Steven

2012-01-01

264

Web Database Development.  

National Technical Information Service (NTIS)

This thesis explores the concept of Web Database Development using Active Server Pages (ASP) and Java Server Pages (JSP). These are among the leading technologies in the web database development. The focus of this thesis was to analyze and compare the ASP...

N. A. Tsardas

2001-01-01

265

Searching the Web  

Microsoft Academic Search

We oer an overview of current Web search engine design. After introducing a generic search engine architecture, we examine each engine component in turn. We cover crawling, local Web page storage, indexing, and the use of link analysis for boosting search performance. The most common design and implementation techniques for each of these components are presented. We draw for this

Arvind Arasu; Junghoo Cho; Hector Garcia-molina; Andreas Paepcke; Sriram Raghavan

2001-01-01

266

Towards personalised web intelligence  

Microsoft Academic Search

The Flexible Organizer for Competitive Intelligence (FOCI) is a personalised web intelligence system that provides an integrated platform for gathering, organising, tracking, and disseminating competitive information on the web. FOCI builds personalised information port- folios through a novel method called User-Configurable Clustering, which allows a user to per- sonalise his\\/her portfolios in terms of the content as well as the

Ah-Hwee Tan; Hwee-Leng Ong; Hong Pan; Jamie Ng; Qiu-Xiang Li

2004-01-01

267

RiverWeb  

NSDL National Science Digital Library

Initiated by National Center for Supercomputing Applications or NCSA, the lead organization for the National Computational Science Alliance, the RiverWebSM Program leverages emerging modeling, simulation, visualization and web technologies to facilitate engaged learning about river basin processes among diverse audiences.

268

Constraints for the web  

Microsoft Academic Search

Constraints can be used to specify the desired layout of a web document, and also the behaviour of embedded applets. We present a system architecture in which both the author and the viewer can impose page layout constraints, some required and some preferential. The final appearance of the web page is thus the result of negotiation between author and viewer,

Alan Borning; Richard Lin; Kim Marriott

1997-01-01

269

Sign Language Web Pages  

ERIC Educational Resources Information Center

The World Wide Web has changed the way people interact. It has also become an important equalizer of information access for many social sectors. However, for many people, including some sign language users, Web accessing can be difficult. For some, it not only presents another barrier to overcome but has left them without cultural equality. The…

Fels, Deborah I.; Richards, Jan; Hardman, Jim; Lee, Daniel G.

2006-01-01

270

Factsheets Web Application.  

National Technical Information Service (NTIS)

The Factsheets web application was conceived out of the requirement to create, update, publish, and maintain a web site with dynamic research and development (R and D) content. Before creating the site, a requirements discovery process was done in order t...

F. G. Vigil R. G. Reeder

2000-01-01

271

Web Effort Estimation  

Microsoft Academic Search

Software effort models and effort estimates help project managers allocate resources, control costs, and schedule and improve current practices, leading to projects that are finished on time and within budget. In the context of Web development and maintenance, these issues are also crucial, and very challenging, given that Web projects have short schedules and a highly fluidic scope. Therefore this

Emilia Mendes; Nile Mosley; Steve Counsell

272

The Social Web  

ERIC Educational Resources Information Center

|This article takes a look at tech guru Will Richardson's new book, "Blogs, Wikis, Podcasts, and Other Powerful Web Tools for Classrooms." Whether it's blogs or wikis or RSS, all roads now point to a Web where little is done in isolation. The biggest, most sweeping change in the people's relationship with the Internet may not be as much the…

Richardson, Will

2006-01-01

273

Challenges: Wireless Web Services  

Microsoft Academic Search

This paper describes the challenges of adapting existing web-service architecture to the wireless environment. It presents a new, wireless, web-service architecture based on the smart client model that can address some of the fundamental differences between the wireless and wireline environments. The fundamental differences between these environments can be called the mobile challenges, including (1) the unpredictable nature of the

Hao-hua Chu; Chuang-wen You; Chao-ming Teng

2004-01-01

274

Challenges: wireless Web services  

Microsoft Academic Search

This paper describes the challenges of adapting existing Web-service architecture to the wireless environment. It presents a new, wireless, Web-service architecture based on the smart client model that can address some of the fundamental differences between the wireless and wireline environments. The fundamental differences between these environments can be called the mobile challenges, including (1) the unpredictable nature of the

Hao-hua Chu; Chuang-wen You; Chao-ming Teng

2004-01-01

275

Modernising Semantic Web Markup  

Microsoft Academic Search

The Resource Description Framework (RDF) web metadata format has an XML syntax RDF\\/XML which has been described as a ugly and flawed, mainly as a consequence of it being an early XML format, dating from 1998. This presentation will describe the perceived and real problems and select appropriate modern XML and web best practices for improving RDF markup that can

David Beckett

276

Wetlands and Web Pages.  

ERIC Educational Resources Information Center

|Argues that the preservation of areas like the Shoreline Park (California) wetlands depends on educating students about the value of natural resources. Describes the creation of a Web page on the wetlands for third-grade students by seventh-grade art and ecology students. Outlines the technical process of developing a Web page. (DSK)|

Tisone-Bartels, Dede

1998-01-01

277

WebWorld  

NSDL National Science Digital Library

WebWorld, a virtual world you can move around in, build in, and visually link to other parts of the World Wide Web. Can click on a link, such as a home or an office, or a container, such as a city, town, or large building. Users own the links and paths they build.

278

Esophageal Rings and Webs  

MedlinePLUS

... determine if you have a ring or a web, your doctor may order one of these tests: Barium swallow test. This allows the radiologist to ... contribute to the development of esophageal rings and webs, your doctor probably will order a blood test for iron levels and, if you are deficient, ...

279

General features  

SciTech Connect

The San Andreas fault system, a complex of faults that display predominantly large-scale strike slip, is part of an even more complex system of faults, isolated segments of the East Pacific Rise, and scraps of plates lying east of the East Pacific Rise that collectively separate the North American plate from the Pacific plate. This chapter briefly describes the San Andreas fault system, its setting along the Pacific Ocean margin of North America, its extent, and the patterns of faulting. Only selected characteristics are described, and many features are left for depictions on maps and figures.

Wallace, R.E.

1990-01-01

280

Web++ architecture, design and performance  

Microsoft Academic Search

We describe the design of a system for fast and reliable HTTP service which we call Web++. Web++ achieves high reliability\\u000a by dynamically replicating web data among multiple web servers. Web++ selects the available server that is expected to provide\\u000a the fastest response time. Furthermore, Web++ guarantees data delivery given that at least one server containing the requested\\u000a data is

Radek Vingralek; Mehmet Sayal; Yuri Breitbart; Peter Scheuermann

2000-01-01

281

SENT: semantic features in text  

PubMed Central

We present SENT (semantic features in text), a functional interpretation tool based on literature analysis. SENT uses Non-negative Matrix Factorization to identify topics in the scientific articles related to a collection of genes or their products, and use them to group and summarize these genes. In addition, the application allows users to rank and explore the articles that best relate to the topics found, helping put the analysis results into context. This approach is useful as an exploratory step in the workflow of interpreting and understanding experimental data, shedding some light into the complex underlying biological mechanisms. This tool provides a user-friendly interface via a web site, and a programmatic access via a SOAP web server. SENT is freely accessible at http://sent.dacya.ucm.es.

Vazquez, Miguel; Carmona-Saez, Pedro; Nogales-Cadenas, Ruben; Chagoyen, Monica; Tirado, Francisco; Carazo, Jose Maria; Pascual-Montano, Alberto

2009-01-01

282

Polar Meteorology: An Interactive Educational Web Module  

NASA Astrophysics Data System (ADS)

The author has created a public web module that explores topics related to polar meteorology and climatology. Currently, the module contains sections on vessel icing, polar climates, climate change and web resources. The key feature of the web module is interactivity; each section has an exercise that requires the student to actively participate in his/her education rather than just absorb information. The climate section features active maps of the Arctic and Antarctic regions; when the user clicks on a region, a plot of the annual temperature cycle is displayed. The exercise requires the user to analyze factors that control climate by comparing regions and analyzing the differences in the temperature patterns. The climate change section features a global energy balance model that can be run online in less than two minutes. An easy-to-use online form is used to provide inputs such as surface albedo, horizontal advection, solar input and several other geophysical parameters into the model. The associated exercise examines how changes in these inputs affect global temperatures as a function of time of year and latitude, sea ice extent and sea ice thickness. All the exercises feature multiple choice questions with instant feedback after each question is answered. The module can and has been used in a stand alone fashion and in conjunction with other educational materials and media. This presentation will showcase the module in an online environment. You may examine the module for yourself by following the link below.

Guest, P. S.

2003-12-01

283

Enhanced Television Strategy Models: A Study of TV Web Sites.  

ERIC Educational Resources Information Center

|Compares the use of enhanced television features and television commerce features on the Web sites of cable and broadcast television networks. Shows differences in strategies and site usability; proposes three enhanced television strategy models; and discusses implications on television revenue and viewership. (Author/LRW)|

Ha, Louisa

2002-01-01

284

Hidden sentiment association in chinese web opinion mining  

Microsoft Academic Search

The boom of product review websites, blogs and forums on the web has attracted many research efforts on opinion min- ing. Recently, there was a growing interest in the finer- grained opinion mining, which detects opinions on different review features as opposed to the whole review level. The researches on feature-level opinion mining mainly rely on identifying the explicit relatedness

Qi Su; Xinying Xu; Honglei Guo; Zhili Guo; Xian Wu; Xiaoxun Zhang; Bin Swen; Zhong Su

2008-01-01

285

A THEME ON WEB MARKETING THROUGH WEB TRAFFIC  

Microsoft Academic Search

In business, web traffic analysis plays a greater role and it is relatively a new market segment. With the development of World Wide Web (WWW), companies are beginning to get more sophisticated about how they use their web sites and want to know how to increase their return on investment (ROI). This paper reviews the business trends with web traffic

Nanhay Singh; R. K. Chauhan; Raghuraj Singh; Navin Kumar Tyagi; A. K. Solanki; Deepak Kumar Swain

2010-01-01

286

Teaching web development in the web 2.0 era  

Microsoft Academic Search

We are experiencing a qualitatively different era of the Web, as evidenced by most Web applications and websites that have emerged and transpired over recent years. The new Web 2.0 era and the technologies beneath it provide both demands and challenges for IT educators to reform traditional Web Development courses. This paper presents our shared experiences and knowledge in teaching

Ye Diana Wang; Nima Zahadat

2009-01-01

287

Web-CS: Infrastructure for Web-Based Competitions.  

ERIC Educational Resources Information Center

This paper presents a World Wide Web-based infrastructure for cooperation between many different parties. The infrastructure is designed for Web-based competitions involving an editorial board, designers of assignments or events, evaluators, different organizational layers, and contestants. Web-CS is entirely Web-based: all the communication…

Aerts, A. T. M.; Bierhoff, P. F. M.; De Bra, P. M. E.

288

Climate Web sites  

NASA Astrophysics Data System (ADS)

With the growing interest in extreme climate and weather events, the National Oceanic and Atmospheric Administration (NOAA) has set up a one-stop Web site. It includes data on tornadoes, hurricanes, and heavy rainfall, temperature extremes, global climate change, satellite images, and El Niño and La Niña. The Web address is http://www.ncdc.noaa.gov.Another good climate Web site is the La Niña Home Page. Set up by the Environmental and Societal Impacts Group of the National Center for Atmospheric Research, the site includes forecasts, data sources, impacts, and Internet links.

Showstack, Randy

289

Chemistry WebBook  

National Institute of Standards and Technology Data Gateway

SRD 69 NIST Chemistry WebBook (Web, free access)   The NIST Chemistry WebBook contains: Thermochemical data for over 7000 organic and small inorganic compounds; thermochemistry data for over 8000 reactions; IR spectra for over 16,000 compounds; mass spectra for over 33,000 compounds; UV/Vis spectra for over 1600 compounds; electronic and vibrational spectra for over 5000 compounds; constants of diatomic molecules(spectroscopic data) for over 600 compounds; ion energetics data for over 16,000 compounds; thermophysical property data for 74 fluids.

290

WebEntrepreneurs  

NSDL National Science Digital Library

WebEntrepreneurs is a comprehensive Website dedicated to the success of Web-based businesses. After a free required online registration, users gain access to entrepreneurial news from a variety of online sources, business tools including step-by-step advice for starting a business, links to business resources, a membership directory, and online forums. Although most of the information on WebEntrepreneurs is geared towards those looking to start online businesses, it is a solid resource for entrepreneurship of any kind.

291

WebOvision  

NSDL National Science Digital Library

Finding the web sites of traditional media outlets is easier with WebOvision, which provides links to television, radio, and newspaper sites around the world. Also included are news sources, film and theater links, and professional resources for journalists. The media sources are arranged by country and then by state or province, if applicable. A search engine allows keyword searching of the entire site; entering a city name, for example, will return links to web sites for print, television and radio outlets in that city. The news sources page provides links to international news agencies as well as press release databases.

292

Cytoscape Web: an interactive web-based network browser.  

PubMed

Cytoscape Web is a web-based network visualization tool-modeled after Cytoscape-which is open source, interactive, customizable and easily integrated into web sites. Multiple file exchange formats can be used to load data into Cytoscape Web, including GraphML, XGMML and SIF. Availability and Implementation: Cytoscape Web is implemented in Flex/ActionScript with a JavaScript API and is freely available at http://cytoscapeweb.cytoscape.org/. PMID:20656902

Lopes, Christian T; Franz, Max; Kazi, Farzana; Donaldson, Sylva L; Morris, Quaid; Bader, Gary D

2010-07-23

293

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

294

Web Cost Estimation: An Introduction  

Microsoft Academic Search

Despite the diversity of Web application types, technologies employed, and the number of free templates available on the Web, we still have a considerable amount of Web companies bidding and competing for as many Web projects as they can accommodate. Bidding and winning a proposal does not mean that the project will be developed within time and budget. Cost estimation

Emilia Mendes

295

Issues in Web Content Replication  

Microsoft Academic Search

Web content replication began as explicit manual mirroring of Web sites. It has since evolved into user- transparent request distribution among a static set of mirr ors. The next step (especially important for large-scale Web hosting service providers) is dynamic cont ent replication, where object replicas are cre- ated, deleted, or migrated among Web hosts in response to cha nging

Michael Rabinovich

1998-01-01

296

Trusting Answers on the Web  

Microsoft Academic Search

The Web lacks support for explaining information provenance. When web applications return answers, many users do not know what information sources were used, when they were updated, how reliable the source was, or what information was looked up versus derived. The Web also lacks support for explaining reasoning paths used to de- rive or retrieve answers. The Inference Web (IW)

Deborah L. McGuinness; Paulo Pinheiro da Silva

297

Guanxi in the Chinese Web  

Microsoft Academic Search

Guanxi is a type of dyadic social interaction based on feelings, trust, and the development of friendship. In this paper, we define the concept of guanxi as it is applied to the interaction between web sites. We show by analyzing the local linking structure between Chinese web sites and the content of Chinese web documents that interaction between Chinese web

Valerie King; Louis Yu; Yan Zhuang

2009-01-01

298

A dual web potato harvester  

Microsoft Academic Search

Using information gathered from trials with a dual web potato digger, a single-row, power take-off driven harvester was manufactured. The machine has dual rod-link webs running one within the other. The outer web rods are spaced 51 mm apart and the inner web rods 32 mm apart.

J. Carruthers

1977-01-01

299

Web Intelligence: Analysis, Representation & Deployment  

Microsoft Academic Search

This paper describes the practical application of web intelligence for visitor behavioural analysis. The objective of the paper is to show how the research in data mining carried out in the authors' laboratory has been synthesised to address the requirements of web intelligence. Initially, Web Intelligence is defined, and the data components used are explained. The web mining components of

Maurice MULVENNA; Sarabjot S. ANAND; Alex BÜCHNER

300

Precision Web Searching.  

National Technical Information Service (NTIS)

Report developed under SBIR contract for topic AF99-136, 'Intelligent Web Assistant'. The technical feasibility of a new approach to precisely searching multiple, distributed, heterogeneous information sources was demonstrated. This new approach combines ...

K. Romanik

2000-01-01

301

A zooming Web browser  

SciTech Connect

We are developing a prototype zooming World-Wide Web browser within Pad++, a multiscale graphical environment. Instead of having a single page visible at a time, multiple pages and the links between them are depicted on a large zoomable information surface. Pages are scaled so that the page in focus is clearly readable with connected pages shown at smaller scales to provide context. We quantitatively compared performance with the Pad++ Web browser and Netscape in several different scenarios. We examined how quickly users could answer questions about a specific Web site designed for this test. Initially we found that subjects answered questions slightly slower with Pad++ than with Netscape. After analyzing the results of this study, we implemented several changes to the Pad++ Web browser, and repeated one Pad++ condition. After improvements were made to the Pad++ browser, subjects using Pad++ answered questions 23% faster than those using Netscape.

Bederson, B.B.; Hollan, J.D.; Stewart, J.; Rogers, D.; Vick, D. [New Mexico Univ., Albuquerque, NM (United States). Dept. of Computer Science; Ring, L.; Grose, E.; Forsythe, C. [Sandia National Labs., Albuquerque, NM (United States)

1996-12-31

302

Web document engineering  

SciTech Connect

This tutorial provides an overview of several document engineering techniques which are applicable to the authoring of World Wide Web documents. It illustrates how pre-WWW hypertext research is applicable to the development of WWW information resources.

White, B.

1996-05-01

303

Web surveys' hidden hazards.  

PubMed

The same question posed on the Web and in print can yield very different answers, dramatically distorting survey results and misleading management. But, as psychologist Palmer Morrel-Samuels demonstrates, the problems are readily fixed. PMID:12858707

Morrel-Samuels, Palmer

2003-07-01

304

Food and Beverage Brands that Market to Children and Adolescents on the Internet: A Content Analysis of Branded Web Sites  

ERIC Educational Resources Information Center

|Objective: To identify food and beverage brand Web sites featuring designated children's areas, assess marketing techniques present on those industry Web sites, and determine nutritional quality of branded food items marketed to children. Design: Systematic content analysis of food and beverage brand Web sites and nutrient analysis of food and…

Henry, Anna E.; Story, Mary

2009-01-01

305

Supporting Web Search with Visualization  

NASA Astrophysics Data System (ADS)

One of the fundamental goals of Web-based support systems is to promote and support human activities on the Web. The focus of this Chapter is on the specific activities associated with Web search, with special emphasis given to the use of visualization to enhance the cognitive abilities of Web searchers. An overview of information retrieval basics, along with a focus on Web search and the behaviour of Web searchers is provided. Information visualization is introduced as a means for supporting users as they perform their primary Web search tasks. Given the challenge of visualizing the primarily textual information present in Web search, a taxonomy of the information that is available to support these tasks is given. The specific challenges of representing search information are discussed, and a survey of the current state-of-the-art in visual Web search is introduced. This Chapter concludes with our vision for the future of Web search.

Hoeber, Orland; Yang, Xue Dong

306

Making Web Servers Pushier  

Microsoft Academic Search

The success of the World Wide Web measured in terms of the number of its users and of the resulting traffic increase is only\\u000a commensurate to the patience required when sitting in front of one’s computer, waiting for a document to be down-loaded. If\\u000a one could identify the typical access patterns for a set of documents on a Web server,

Bin Lan; Stéphane Bressan; Beng Chin Ooi; Y. C. Tay

1999-01-01

307

Web Page Evaluations  

NSDL National Science Digital Library

Use the two chemical element web sites below to evaluate which site is more reliable. Which is more authoritative? Which is more accurate? Which is more current? How does their coverage or detail compare? Is there advertising on the page? Is there bias or objectivity? ChemicalElements.com Web Elements Evaluation Criteria by Susan E. Beck - links to a page that will help you evaluate each website. ...

Schultz, Ms.

2010-05-06

308

Phonetic Experiment Web Application  

Microsoft Academic Search

This paper describes the development of a methodology and software for phonetics designed with the support of the Internet\\u000a and web technologies. A web application was created as a data gathering instrument for a phonetic study which aimed to detect\\u000a the most frequent segmental markers of Macedonian-English accented speech as perceived by native speakers of English and to\\u000a find out

Anastazija Kirkova-Naskova; Goran Bakraceski; Vladimir Apostolski; Dimitar Trajanov

309

CareerWeb  

NSDL National Science Digital Library

CareerWeb is a searchable database of professional, technical, and managerial jobs in the private sector. US and international employment listings may be searched by job type, location, key word, or employer, and search results include lengthy descriptions as well as links to company homepages. Job seekers deciding to register their resume with CareerWeb may enter their personal file number into the search results for immediate application. Users will also find the alphabetical listing of employers useful.

310

Web-Based Training  

Microsoft Academic Search

Current Web-based training (WBT) is based upon systematic research and experience with strategies for improving learning and instruction, beginning in the early part of the 20th century and continuing to the present. Use of the World-Wide Web for delivery may improve access to training, but the effectiveness of the resulting training and the usefulness of the outcomes is chiefly dependent

Patrick J. Fahy

311

Angiosperm Phylogeny Web site  

NSDL National Science Digital Library

From the Missouri Botanical Gardens, this Web site provides a classification of angiosperms that can be navigated either by phylogenic tree, Order, or Family. A detailed description of the classification system is provided by the author, along with literature references and links to other related Web sites. Descriptions of each Family and Order include synonyms and the geographic range in which each is found. Users with a background in botany will find this a useful resource.

Stevens, P. F.

2001-01-01

312

Web Digest for Marketers  

NSDL National Science Digital Library

Created and maintained by Larry Chase, Web Digest for Marketers (WDM) was started in 1995, nearly a lifetime in Internet years. The site offers an archived weekly publication of "15 mercifully short reviews of marketing-oriented Web sites." Broken into catagories including Research, HTML, JavaScript, and FAQs, the sites are reviewed in a helpful, conversational style. Interested users are encouraged to subscribe to the email version of WDM.

313

Flexible Graph Layout for the Web  

Microsoft Academic Search

More powerful personal computers and higher network bandwidth has meant that graphics has become increasingly important on the web. Graph-based dia- grams are one of the most important types of structured graphical information. Here we demonstrate how XML can be used as basis for contents-based delivery of graph-based diagrams. The main distinguishing feature of our approach is that it separates

Trevor Hansen; Kim Marriott; Bernd Meyer; Peter J. Stuckey

2002-01-01

314

Web tool opens up power system visualization  

Microsoft Academic Search

This article presents a flexible architecture of a Web-based tool that serves as a platform for power system visualization with open data structures. Different from regular applications, this platform may be viewed as a semicompleted application. It implements common features of a power system application such as GIS-like drawing and visualization, built-in topology processor, and so on. Meanwhile, the platform

Fangxing Li

2003-01-01

315

XML-based communication protocols for WebGIS  

Microsoft Academic Search

Aimed at the features of complex objects and massive data transmission, a new XML-based method to design and implement communication protocols for WebGIS is presented. The paper illustrates the mechanism in designing communication protocols following W3C's XML Schema specification, as well as provides main flow to embed them into WebGIS by packing and parsing XML-based protocols. This kind of protocol

Luo Yingwei; Liu Xinpeng; Wang Xiaolin; Xu Zhuoqun

2003-01-01

316

The Multi-Q web server for multiplexed protein quantitation  

Microsoft Academic Search

Multi-Q Web Server provides an automated data analysis tool for multiplexed protein quantitation based on the iTRAQ labeling method. Multi-Q is designed as a generic platform that can accommodate various input data formats from search engines and mass spectrometer manufacturers. In comparison with its previous stand-alone version, this new web server version provides many enhanced features and flexible options for

Chuan-yih Yu; Yin-hao Tsui; Yi-hwa Yian; Ting-yi Sung; Wen-lian Hsu

2007-01-01

317

Beamauth: two-factor web authentication with a bookmark  

Microsoft Academic Search

We propose BeamAuth, a two-factor web authentication tech- nique where the second factor is a specially crafted book- mark. BeamAuth presents two interesting features: (1) only server-side deployment is required alongside any modern, out-of-the-box web browser on the client side, and (2) cre- dentials remain safe against many types of phishing attacks, even if the user fails to check proper

Ben Adida

2007-01-01

318

U.S.G.S. Planetary GIS Web Server  

NSDL National Science Digital Library

The USGS Planetary GIS Web Server (Planetary Interactive GIS-on-the-Web Analyzable Database or PIGWAD) is an interactive interface for locating and downloading mapped images of all types for planetary bodies, including planets and their moons. The Mars interface is a one-stop-shopping interface, providing access to all Mars imagery (MOC, THEMIS, MOLA, HRSC, and Viking) at full resolution. The site also features links to GIS tutorials, discussions on planetary GIS, MER GIS, etc.

Usgs

319

Uncertainty in the Semantic Web  

Microsoft Academic Search

During the recent decade, significant research activities have been directed towards the Semantic Web as future substitute\\u000a of the Web. Many experts predict that the next huge step forward in Web information technology will be achieved by adding\\u000a semantics to Web data. An important role in research towards the Semantic Web is played by formalisms and technologies for\\u000a handling uncertainty

Thomas Lukasiewicz

2009-01-01

320

Sampling the National Deep Web  

Microsoft Academic Search

\\u000a A huge portion of today’s Web consists of web pages filled with information from myriads of online databases. This part of\\u000a the Web, known as the deep Web, is to date relatively unexplored and even major characteristics such as number of searchable\\u000a databases on the Web or databases’ subject distribution are somewhat disputable. In this paper, we revisit a problem

Denis Shestakov

321

Detecting image purpose in World-Wide Web documents  

NASA Astrophysics Data System (ADS)

The number of WWW documents available to users of the Internet is growing at an incredible rate. Therefore, it is becoming increasingly important to develop systems that aid users in searching, filtering, and retrieving information from the Internet. Currently, only a few prototype systems catalog and index images in Web documents. To greatly improve the cataloging and indexing of images on the Web, we have developed a prototype rule-based systems that detects the content images in Web documents. Content images are images that are associated with the main content of Web documents, as opposed to a multitude of other images that exist in Web documents for different purposes, such as decorative, advertisement and logo images. We present a system that uses decision tree learning for automated rule induction for the content images detection system. The system uses visual features, text-related features and the document context of images in concert for fast and effective content image detection in Web documents. We have evaluated the system by collecting more than 1200 images from 4 different Web sites and we have achieved an overall classification accuracy of 84 percent.

Paek, Seungyup; Smith, John R.

1998-04-01

322

How Do People Evaluate a Web Site's Credibility?  

NSDL National Science Digital Library

As the Internet continues to grow, users are increasingly faced with the problem of evaluating the trustworthiness of Web sites. This paper presents the results of two studies conducted to determine how people approach this situation. The researchers "gathered the comments people wroteÂabout each site's credibility and analyzed these comments to track which features of a Web site were noticed (or went unnoticed)" when considering credibility. Eighteen aspects of Web site design are ranked according to their importance as reported by the study's subjects. The results are quite surprising, because many of the critical items were rated lower than the more aesthetic ones.

Tauber, Ellen R.; Stanford, Julianne.; Marable, Leslie.; Danielsen, David.; Soohoo, Cathy.; Fogg, B. J.

2002-01-01

323

Scalable web services for the PSIPRED Protein Analysis Workbench.  

PubMed

Here, we present the new UCL Bioinformatics Group's PSIPRED Protein Analysis Workbench. The Workbench unites all of our previously available analysis methods into a single web-based framework. The new web portal provides a greatly streamlined user interface with a number of new features to allow users to better explore their results. We offer a number of additional services to enable computationally scalable execution of our prediction methods; these include SOAP and XML-RPC web server access and new HADOOP packages. All software and services are available via the UCL Bioinformatics Group website at http://bioinf.cs.ucl.ac.uk/. PMID:23748958

Buchan, Daniel W A; Minneci, Federico; Nugent, Tim C O; Bryson, Kevin; Jones, David T

2013-06-08

324

Scalable web services for the PSIPRED Protein Analysis Workbench  

PubMed Central

Here, we present the new UCL Bioinformatics Group’s PSIPRED Protein Analysis Workbench. The Workbench unites all of our previously available analysis methods into a single web-based framework. The new web portal provides a greatly streamlined user interface with a number of new features to allow users to better explore their results. We offer a number of additional services to enable computationally scalable execution of our prediction methods; these include SOAP and XML-RPC web server access and new HADOOP packages. All software and services are available via the UCL Bioinformatics Group website at http://bioinf.cs.ucl.ac.uk/.

Buchan, Daniel W. A.; Minneci, Federico; Nugent, Tim C. O.; Bryson, Kevin; Jones, David T.

2013-01-01

325

A Cybercrime Forensic Method for Chinese Web Information Authorship Analysis  

Microsoft Academic Search

With the increasing popularization of the Internet, Internet services used as illegal purposes have become a serious problem.\\u000a How to prevent these phenomena from happening has become a major concern for society. In this paper, a cybercrime forensic\\u000a method for Chinese illegal web information authorship analysis was described. Various writing-style features including linguistic\\u000a features and structural features were extracted. To

Jianbin Ma; Guifa Teng; Yuxin Zhang; Yueli Li; Ying Li

2009-01-01

326

Boca: an open-source RDF store for building Semantic Web applications.  

PubMed

This article presents the design goals and features of the open-source Boca RDF server in the context of a community of cancer-tumor modeling investigators. Boca supplements the desirable data features of the Semantic Web with important enterprise and application features to power a new generation of Semantic-Web-based applications. The data features enable the integration and retrieval of tremendous quantities of diverse data. The enterprise features promote data integrity, fidelity, provenance and robustness. The application features provide for collaborative applications and dynamic user interfaces. PMID:17491005

Feigenbaum, Lee; Martin, Sean; Roy, Matthew N; Szekely, Benjamin; Yung, Wing C

2007-05-08

327

An Open GeoSpatial Standards-Enabled Google Earth Application to Support Crisis Management  

Microsoft Academic Search

Google Earth (GE) and related open geospatial technologies have changed both the accessibility of and audience for geospatial\\u000a information dramatically. Through data rich applications with easy to use interfaces, these technologies bring personalized\\u000a geospatial information directly to the non-specialist. When coupled with open geospatial data standards, such as Web Map Services\\u000a (WMS), Web Features Services (WFS), and GeoRSS, the resulting

Scott Pezanowski; Brian Tomaszewski; Alan M. MacEachren

328

Semantic Analysis of Web Site Audience by Integrating Web Usage Mining and Web Content Mining  

Microsoft Academic Search

With the emergence of the World Wide Web, analyzing and improving Web communication has become essential to adapt the Web\\u000a content to the visitors’ expectations. Web communication analysis is traditionally performed by Web analytics software, which\\u000a produce long lists of page-based audience metrics. These results suffer from page synonymy, page polysemy, page temporality,\\u000a and page volatility. In addition, the metrics

Jean-Pierre Norguet; Esteban Zimányi; Ralf Steinberger

329

Tool independence for the Web Accessibility Quantitative Metric.  

PubMed

The Web Accessibility Quantitative Metric (WAQM) aims at accurately measuring the accessibility of web pages. One of the main features of WAQM among others is that it is evaluation tool independent for ranking and accessibility monitoring scenarios. This article proposes a method to attain evaluation tool independence for all foreseeable scenarios. After demonstrating that homepages have a more similar error profile than any other web page in a given web site, 15 homepages were measured with 10,000 different values of WAQM parameters using EvalAccess and LIFT, two automatic evaluation tools for accessibility. A similar procedure was followed with random pages and with several test files obtaining several tuples that minimise the difference between both tools. One thousand four hundred forty-nine web pages from 15 web sites were measured with these tuples and those values that minimised the difference between the tools were selected. Once the WAQM was tuned, the accessibility of 15 web sites was measured with two metrics for web sites, concluding that even if similar values can be produced, obtaining the same scores is undesirable since evaluation tools behave in a different way. PMID:19565386

Vigo, Markel; Brajnik, Giorgio; Arrue, Myriam; Abascal, Julio

2009-07-01

330

Visual evaluation of text features for document summarization and analysis  

Microsoft Academic Search

Thanks to the web-related and other advanced technologies, tex- tual information is increasingly being stored in digital form and posted online. Automatic methods to analyze such textual infor- mation are becoming inevitable. Many of those methods are based on quantitative text features. Analysts face the challenge to choose the most appropriate features for their tasks. This requires effective approaches for

Daniela Oelke; Peter Bak; Daniel A. Keim; Mark Last; Guy Danon

2008-01-01

331

The Learning Web  

NSDL National Science Digital Library

Here is a new, rich resource for K-12 teachers and students from the US Geological Survey (USGS). The Learning Web provides online lesson plans, activities, tutorials (some downloadable and printable in .pdf), and links to references dealing with interdisciplinary studies of natural science. For example, the Exploring Caves section (1-3 level) covers the basic geology of caves, life habits of cave-dwelling organisms, and cave safety and conservation. Other topics explored on the Learning Web include maps, climate, wildlife, earth processes, and more. Learning Web culls pages appropriate for K-12 instruction from the USGS's vast online collection of factsheets, data, and program sites, allowing teachers and students to spend time learning rather than searching. However, because this site is so full of information, it can be tricky to navigate and important sections can be missed, so try using their search engine to find specific topics. Note also that elementary content is much more abundant here than secondary.

2001-01-01

332

Polar Chains and Webs  

NSDL National Science Digital Library

In this activity students will put into practice the evaluation component of the scientific method while comparing and contrasting the similarities and differences of the food chains and webs of polar animal life. Students will learn about classification and ecology through the real life experiences and connections of professionals who have been in the field. Through developing skills in teamwork and planning, this activity will allow students to understand the similarities and differences of the Arctic and Antarctic regions, their animal life and the food chains and webs supporting them. Students will: locate the Arctic region and Antarctica on globes and maps; identify similarities and differences in their animal life; and show and explain the food chain of a specific species and the food web of that species while discussing their interrelationships.

Kolb, Sandra; Griffith, Rick

333

SeaWeb  

NSDL National Science Digital Library

SeaWeb is a nonprofit organization aimed at raising awareness of the ocean and marine life that play "a critical role in our everyday life and in the future of our planet." SeaWeb employs a team of professionals from biology, exploration, and various communication disciplines. The current campaigns include an effort to protect the declining Caspian Sea Sturgeon ("the source of most of the world's caviar"), an attempt to reduce overfishing of swordfish, and a report about the changes occurring in the world's oceans. This Web site is a robust source of information about many threats that are facing marine ecosystems, and an attempt to reduce the dangers by educating the public about the impacts of their behavior.

1996-01-01

334

12. NORTH WEB DETAIL, SHOWING LOWER CHORD CONNECTION OF WEBBED ...  

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

12. NORTH WEB DETAIL, SHOWING LOWER CHORD CONNECTION OF WEBBED VERTICAL (PANEL POINT C). VIEW TO SOUTHWEST. - Lower Plymouth Rock Bridge, Spanning Upper Iowa River, Kendallville, Winneshiek County, IA

335

Using ESO Reflex with Web Services  

NASA Astrophysics Data System (ADS)

ESO Reflex is a prototype graphical workflow system, based on Taverna, and primarily intended to be a flexible way of running ESO data reduction recipes along with other legacy applications and user-written tools. ESO Reflex can also readily use the Taverna Web Services features that are based on the Apache Axis SOAP implementation. Taverna is a general purpose Web Service client, and requires no programming to use such services. However, Taverna also has some restrictions: for example, no numerical types such integers. In addition the preferred binding style is document/literal wrapped, but most astronomical services publish the Axis default WSDL using RPC/encoded style. Despite these minor limitations we have created simple but very promising test VO workflow using the Sesame name resolver service at CDS Strasbourg, the Hubble SIAP server at the Multi-Mission Archive at Space Telescope (MAST) and the WESIX image cataloging and catalogue cross-referencing service at the University of Pittsburgh. ESO Reflex can also pass files and URIs via the PLASTIC protocol to visualisation tools and has its own viewer for VOTables. We picked these three Web Services to try to set up a realistic and useful ESO Reflex workflow. They also demonstrate ESO Reflex abilities to use many kind of Web Services because each of them requires a different interface. We describe each of these services in turn and comment on how it was used

Järveläinen, P.; Savolainen, V.; Oittinen, T.; Maisala, S.; Ullgrén, M. Hook, R.

2008-08-01

336

WebQual: An Exploration of WebSite Quality  

Microsoft Academic Search

The issue of web -site quality is tac kled from the perspective of the 'voice of the customer'. Quality function deployment (QFD) is adopted as a framework for identifying web-site qualities demanded by users, which are gathered through a quality workshop. From the workshop an instrument for assessing web-site quality is developed (WebQual) and tested in the domain of UK

Stuart J. Barnes; Richard T. Vidgen

2000-01-01

337

Modeling Semantic Web Services with the Web Service Modeling Toolkit  

Microsoft Academic Search

The lack of any methodology for modeling Semantic Web Services means that developers wishing to utilize technologies like\\u000a the Web Service Modeling Ontology, the Web Service Modeling Language, and the Web Service Execution Environment are lost in\\u000a a Semantic wilderness with no road signs to guide them on their way. This paper presents an initial guide for developers wishing\\u000a to

Mick Kerrigan; Adrian Mocan; Elena Paslaru Bontas Simperl; Dieter Fensel

2009-01-01

338

WebCopier  

NSDL National Science Digital Library

WebCopier is a Windows-based, offline browser utility. Websites may be scheduled for download according to options which include link depth, file type, and server. Following download, the site is accessible through a tree structure which has the added benefit of showing a unified view of the entire site. In addition to HTML, Javascript is also parsed giving offline access to sites referenced only from Javascript. WebCopier is free and is compatible with Windows 95, 98, NT, or 2000.

339

WebZip  

NSDL National Science Digital Library

WebZip is a tool that lets users download partial or entire Websites to their hard drives. Users may then view these pages later, presumably when they do not have access to the Internet. Download tasks are initiated from a single URL and can be configured to follow a specified number of links. Other configuration options include following external links, converting links in the downloaded HTML to relative links, and compression to zip files. WebZip has a 28-day evaluation period and a purchase price of $39.95. It is compatible with Windows 95/98/NT.

340

EcEd Web  

NSDL National Science Digital Library

The Economic Education Website (EcEdWeb) was created by the Center for Economic Education at the University of Nebraska, Omaha. The aim of the site is to provide support for economic education from K-12 through college. At the site visitors will find links to teaching resources, economic information and economic data. In addition, there is a section on how to use the Internet for economics education. Note that the website also houses the web pages of the National Association of Economic Educators and the Missouri Valley Economics Association.

Sosin, Kim.

1998-01-01

341

Trace-Oriented Feature Analysis for Large-Scale Text Data Dimension Reduction  

Microsoft Academic Search

Dimension reduction for large-scale text data is attracting much attention nowadays due to the rapid growth of the World Wide Web. We can categorize those popular dimension reduction algorithms into two groups: feature extraction and feature selection algorithms. In the former, new features are combined from their original features through algebraic transformation. Though many of them have been validated to

Jun Yan; Ning Liu; Shuicheng Yan; Qiang Yang; Weiguo Fan; Wei Wei; Zheng Chen

2011-01-01

342

Restructuring Web Site Design: An Alternative to WebTeams.  

ERIC Educational Resources Information Center

In July 1997, the University Library at the University of Nebraska at Omaha adopted a new structural model for Web site development--the publishing metaphor. Rather than relying on an individual expert (the Webmaster) or a WebTeam comprised of a few individuals, the model permits everyone in the organization, regardless of position or Web

Davis, Marc; Boyer, Janice

343

Dynamic Web Pages: Performance Impact on Web Servers.  

ERIC Educational Resources Information Center

|Discussion of Web servers and requests for dynamic pages focuses on experimentally measuring and analyzing the performance of the three dynamic Web page generation technologies: CGI, FastCGI, and Servlets. Develops a multivariate linear regression model and predicts Web server performance under some typical dynamic requests. (Author/LRW)|

Kothari, Bhupesh; Claypool, Mark

2001-01-01

344

Designing Effective Web Forms for Older Web Users  

ERIC Educational Resources Information Center

|This research aims to provide insight for web form design for older users. The effects of task complexity and information structure of web forms on older users' performance were examined. Forty-eight older participants with abundant computer and web experience were recruited. The results showed significant differences in task time and error rate…

Li, Hui; Rau, Pei-Luen Patrick; Fujimura, Kaori; Gao, Qin; Wang, Lin

2012-01-01

345

Metcalfe's law, Web 2.0, and the Semantic Web  

Microsoft Academic Search

The power of the Web is enhanced through the network effect produced as resources link to each other with the value determined by Metcalfe's law. In Web 2.0 applications, much of that effect is delivered through social linkages realized via social networks online. Unfortunately, the associated semantics for Web 2.0 applications, delivered through tagging, is generally minimally hierarchical and sparsely

James A. Hendler; Jennifer Golbeck

2008-01-01

346

Location and the Web: (LocWeb 2008)  

Microsoft Academic Search

The World Wide Web has become the world's largest networked information resource, but references to geographical locations remain unstructured and typically implicit in nature. This lack of explicit spatial knowledge within the Web makes it difficult to service user needs for location-specific information. At present, spatial knowledge is hidden in many small information fragments such as addresses on Web pages,

Susanne Boll; Christopher Jones; Eric Kansa; Puneet Kishor; Mor Naaman; Ross Purves; Arno Scharl; Erik Wilde

2008-01-01

347

Location and the web (LocWeb 2008)  

Microsoft Academic Search

The World Wide Web has become the world's largest networked information resource, but references to geographical locations remain unstructured and typically implicit in nature. This lack of explicit spatial knowledge within the Web makes it difficult to service user needs for location-specific information. At present, spatial knowledge is hidden in many small information fragments such as addresses on Web pages,

Susanne Boll; Christopher Jones; Eric Kansa; Puneet Kishor; Mor Naaman; Ross Purves; Arno Scharl; Erik Wilde

2008-01-01

348

Querying the World Wide Web  

Microsoft Academic Search

The World Wide Web is a large, heterogeneous, distributed collection of documents connected by hypertext links. The most common technology currently used for search- ing the Web depends on sending information retrieval requests to \\

Alberto O. Mendelzon; George A. Mihaila; Tova Milo

1997-01-01

349

Web Browser Security Update Effectiveness  

NASA Astrophysics Data System (ADS)

We analyze the effectiveness of different Web browser update mechanisms on various operating systems; from Google Chrome's silent update mechanism to Opera's update requiring a full re-installation. We use anonymized logs from Google's world wide distributed Web servers. An analysis of the logged HTTP user-agent strings that Web browsers report when requesting any Web page is used to measure the daily browser version shares in active use. To the best of our knowledge, this is the first global scale measurement of Web browser update effectiveness comparing four different Web browser update strategies including Google Chrome. Our measurements prove that silent updates and little dependency on the underlying operating system are most effective to get users of Web browsers to surf the Web with the latest browser version.

Duebendorfer, Thomas; Frei, Stefan

350

Untangling the Web from DNS  

Microsoft Academic Search

The Web relies on the Domain Name System (DNS) to resolve the hostname portion of URLs into IP addresses. This marriage-of-convenience enabled the Web's mete- oric rise, but the resulting entanglement is now hinder- ing both infrastructures—the Web is overly constrained by the limitations of DNS, and DNS is unduly burdened by the demands of the Web. There has been

Michael Walfish; Hari Balakrishnan; Scott J. Shenker

2004-01-01

351

WHAT: Web Hosting Analysis Tool  

Microsoft Academic Search

IntroductionAs the Web increasingly becomes a core element of business strategy, the task of hosting web contenthas become mission critical. Few companies, however, have the resources, money and expertise tobuild their web site entirely in-house. For this reason, many businesses choose to outsource theirWeb hosting to Internet Service Providers and some equipment vendors which, according to ForresterResearch Inc., can slash

Ludmila Cherkasov; Mohan DeSouza

352

An Intelligent Web Service System  

Microsoft Academic Search

The Semantic Web extends today's Web technology by enabling machine- human as wel l as machine-machine interactions with well-defined semantics of Web resources and services. Automated interoperation among machines demands a tool which can manipulate semantic information, enhances under- standing and reasoning, and leads to machine-machine collaboration. This In- telligent Web Service (IWS) System presents a declarative approach to the

S. Suwanapong; Chutiporn Anutariya; Vilas Wuwongse

2002-01-01

353

WebWatch.  

ERIC Educational Resources Information Center

|Reviews ten Web sites that are designed to answer basic legal questions for the layperson. They provide resources on a broad range of legal topics, such as divorce, real estate, and criminal justice, as well as legal forms and information on finding a lawyer. (LRW)|

Newcombe, Pat

2002-01-01

354

Dendritic Web Growth  

Microsoft Academic Search

Dendritic web growth is the process that involves growing ribbons of single crystalline silicon material for use in solar cells. It is optimal to have single crystalline silicon rather than polycrystalline silicon because it has less resistance and a more efficient solar cell can be constructed. In order to grow crystal, a \\

Angela Scott

1998-01-01

355

Warbling on the Web.  

ERIC Educational Resources Information Center

|Describes the use of Web technology to create a repository for American bird songs at Northeastern Sate University (Oklahoma). Explains the use of software to translated bird songs into a sonogram, or picture, of what the sounds look like for ornithology students to better learn bird vocalizations. (LRW)|

Donahue, Steven

2001-01-01

356

Warehousing Web Data  

Microsoft Academic Search

In a data warehousing process, mastering the data preparation phase allows substantial gains in terms of time and performance when performing multidimensional analysis or using data mining algorithms. Furthermore, a data warehouse can require external data. The web is a prevalent data source in this context. In this paper, we propose a modeling process for integrating diverse and heterogeneous (so-called

Jérôme Darmont; Omar Boussaïd; Fadila Bentayeb

2007-01-01

357

Forest food web Illustration  

NSDL National Science Digital Library

The lowest level of a food web includes producers, which are plants that make their own energy from the sun. Animals that eat these producers are called primary consumers, and consumers that eat other consumers are called secondary consumers. Decomposers break down dead plants and animals to release nutrients into the soil.

Katie Hale (CSUF;Biological Sciences)

2007-07-14

358

Zooming Web browser.  

National Technical Information Service (NTIS)

We are developing a prototype zooming World-Wide Web browser within Pad++, a multiscale graphical environment. Instead of having a single page visible at a time, multiple pages and the links between them are depicted on a large zoomable information surfac...

B. B. Bederson J. D. Hollan J. Stewart D. Rogers D. Vick

1996-01-01

359

Caught on the Web  

ERIC Educational Resources Information Center

Isakson presents several Web sites to increase students' awareness of career possibilities and the education choices required to reach them. Among other things, Occupational Information Network (O*NET) Online, which can be viewed at http://online.onetcenter.org/, offers a straightforward interface that lets the user search the database by using…

Isakson, Carol

2006-01-01

360

Web-based recruiting  

Microsoft Academic Search

Recently, Information and Communication Technologies have introduced new practices in human resource management functions such as e-recruitment. Job seekers submit their Curriculum Vitae (CV) via the Web, or send them directly to a company. The area of e-recruitment is facing a growing number of these documents which are in different formats, and contain a large amount of information. Then, it

Soumaya Amdouni; W. Ben Abdessalem Karaa

2010-01-01

361

Web Replica Hosting Systems  

Microsoft Academic Search

Replication is a well-known technique to improve the accessibility of Web sites. It generally offers reduced client latencies and increases a site's availability. However, applying replication techniques is not trivial, and various Content Delivery Networks (CDNs) have been created to fa- cilitate replication for digital content providers. The success of these CDNs has triggered further research efforts into developing advanced

Swaminathan Sivasubramanian; M. Szymaniak; G. Pierre

2004-01-01

362

Criminal Justice Web Sites.  

ERIC Educational Resources Information Center

|Evaluates 15 criminal justice Web sites that have been selected according to the following criteria: authority, currency, purpose, objectivity, and potential usefulness to researchers. The sites provide narrative and statistical information concerning crime, law enforcement, the judicial system, and corrections. Searching techniques are also…

Dodge, Timothy

1998-01-01

363

Gleaning the Web  

Microsoft Academic Search

We are drowning in words. E-mail and Web browsers provide access to myriad sources of text, from newswires to product catalogs, from recipes to movie schedules, but we can pause just a tiny fraction of the available terabytes. The cliche is born: information overload, which threatens to swamp the Internet's promised productivity gains, educational benefits, and entertainment value. In recent

N. Kushmerik

1999-01-01

364

Restructuring Multilingual Web Sites  

Microsoft Academic Search

Current practice of Web site development does not ad- dress explicitly the problems related to multilingual sites. Thesame information, as well as thesame navigation paths, page formatting and organization, are expected to be pro- vided by the site independently from the chosen language. This is typically ensured by adopting personal conventions on the way pages are named and on their

Paolo Tonella; Filippo Ricca; Emanuele Pianta; Christian Girardi

2002-01-01

365

EdWeb  

NSDL National Science Digital Library

This hypertext book by Andy Carvin includes chapters on the role of the Web in education, a crash course in HTML, history and explanations of the Internet, educational reform and information technology, successful case studies, and K-12 resources on the net.

Carvin, Andy

2007-12-12

366

Classroom Activity: Food Webs  

NSDL National Science Digital Library

This lesson plan is designed to help students understand the interrelatedness of food webs and to see how populations of organisms affect each other. Students assume the roles of the various organisms in the ecosystem; the ones that are dependent upon each other are symbolically connected by lengths of yarn. A materials list, instructions, assessment ideas, and educational standards are provided.

367

Securely Replicated Web Documents  

Microsoft Academic Search

In order to achieve better scalability and reduce latency in handling user requests, many Web applications make extensive use of data replication through caches and Content Delivery Networks. However, in such scenarios data is often placed on un- trusted hosts. As a result, existing replication mechanisms open a wide class vulner- abilities, ranging from denial of service to content masquerading.

Bogdan C. Popescu; Maarten Van Steen; Bruno Crispo; Andrew S. Tanenbaum; Jan Sacha; Ihor Kuz

2005-01-01

368

Spelling and the Web  

ERIC Educational Resources Information Center

|Correct spelling is increasingly important in our technological world. We examined children's and adults' Web search behavior for easy and more difficult to spell target keywords. Grade 4 children and university students searched for the life cycle of the lemming (easy to spell target keyword) or the ptarmigan (difficult to spell target keyword).…

Varnhagen, Connie K.; McFall, G. Peggy; Figueredo, Lauren; Takach, Bonnie Sadler; Daniels, Jason; Cuthbertson, Heather

2008-01-01

369

Warbling on the Web.  

ERIC Educational Resources Information Center

Describes the use of Web technology to create a repository for American bird songs at Northeastern Sate University (Oklahoma). Explains the use of software to translated bird songs into a sonogram, or picture, of what the sounds look like for ornithology students to better learn bird vocalizations. (LRW)

Donahue, Steven

2001-01-01

370

Spider Webs and Silks.  

ERIC Educational Resources Information Center

|Compares the attributes of the silk from spiders with those of the commercially harvested silk from silkworms. Discusses the evolution, design, and effectiveness of spider webs; the functional mechanics of the varieties of silk that can be produced by the same spider; and the composite, as well as molecular, structure of spider silk thread. (JJK)|

Vollrath, Fritz

1992-01-01

371

Building Web Literacy Skills.  

ERIC Educational Resources Information Center

Describes web literacy instruction developed and implemented in response to students' needs as part of an English-as-a-Foreign-Language academic skills preparation curriculum. The goals of the instruction are to introduce critical reading strategies and develop computer literacy skills. (Author/VWL)

Reinhardt, Jonathon; Isbell, Katherine

2002-01-01

372

Women's Health on the Web  

Microsoft Academic Search

With the plethora of women's health information on the Web, it is very easy to find oneself wallowing in thousands of Web sites when searching for women's health information. This is an attempt at gathering together some of the best of the Web in general women's health. Sites included are: sites with original material, “webliographies,” women's health organizations, current news,

Dolores Zegar Judkins

2000-01-01

373

Graphics programming for the web  

Microsoft Academic Search

With HTML5 and ever-improving browser performance, the web has emerged as an ideal platform for showcasing graphics applications. Several graphics applications that were once too slow to be written in anything but native code may now be fast enough to run as web apps. This course for developers who want to develop graphics applications for the web introduces the concepts

Pushkar Joshi; Mikaël Bourges-Sévenier; Kenneth Russell; Zhenyao Mo

2012-01-01

374

Embedding speech in web interfaces  

Microsoft Academic Search

In this paper, we will describe work in progress at the MITRE Cor- poration on embedding speech-enabled interfaces in Web browsers. This research is part of our work to establish the infrastructure to create Web-hosted versions of prototype multimodal interfaces, both intelligent and otherwise. Like many others, we believe that the Web is the best potential delivery and distribution vehicle

Samuel Bayer

1996-01-01

375

Creating Web Representations for Places  

Microsoft Academic Search

We believe that the future consists of nomadic people depending upon mobile appliances using World Wide Web protocols to communicate with services offered in real world places. Use of web protocols provides a ubiquitous communication infrastructure and allows interaction with the multitude of existing web-based services. Part of the challenge to realize our vision is to bridge the physical and

Deborah Caswell; Philippe Debaty

2000-01-01

376

The Semantic Web in Education  

ERIC Educational Resources Information Center

|The semantic web or Web 3.0 makes information more meaningful to people by making it more understandable to machines. In this article, the author examines the implications of Web 3.0 for education. The author considers three areas of impact: knowledge construction, personal learning network maintenance, and personal educational administration.…

Ohler, Jason

2008-01-01

377

Multifaceted Learning for Web Taxonomies  

Microsoft Academic Search

A standard problem for internet commerce is the task of building a product taxonomy from web pages, without access to corpo- rate databases. However, a nasty aspect of the real world is that most web-pages have multiple facets. A web page might contain information about both cameras and computers, as well as having both specification and sale data. We are

Wray Buntine; Henry Tirri

378

The Food Web Matching Game  

NSDL National Science Digital Library

In this activity, students construct a food web of Antarctic organisms. Working from a trophic table that provides information about each organisms's role in the food web, they will attempt to place them in their correct positions on a blank food web chart. Links to a glossary are embedded in the text.

379

Hyperlink Analysis for the Web  

Microsoft Academic Search

Hyperlink analysis algorithms significantly improve the relevance of the search results on the Web, so much so that all major Web search engines claim to use some type of hyperlink analysis. However, the search engines do not disclose details about the type of hyperlink analysis they perform, mostly to avoid manipulation of search results by Web-positioning companies. The article discusses

Monika Rauch Henzinger

2001-01-01

380

Multitasking during Web search sessions  

Microsoft Academic Search

A users single session with a Web search engine or information retrieval (IR) system may consist of seeking infor- mation on single or multiple topics, and switch between tasks or multitasking information behavior. Most Web search sessions consist of two queries of approximately two words. However, some Web search sessions consist of three or more queries. We present findings from

Amanda Spink; Minsoo Park; Bernard J. Jansen; Jan O. Pedersen

2006-01-01

381

Web Mapping and XML Technologies \\  

Microsoft Academic Search

SUMMARY The role of XML technologies in GIS and Cartography becomes more and more critical offering great advantages in web-based applications. The objective of this study is to elaborate on the utilization of the XML specifications used in modern web cartographic applications. Emphasis is given to GML, XSL and SVG standards that constitute the major XML encodings used in web

Maria Spanaki; Byron Antoniou; Lysandros Tsoulos

382

Information Diversity in Web Search  

ERIC Educational Resources Information Center

|The web is a rich and diverse information source with incredible amounts of information about all kinds of subjects in various forms. This information source affords great opportunity to build systems that support users in their work and everyday lives. To help users explore information on the web, web search systems should find information that…

Liu, Jiahui

2009-01-01

383

Web-Based Knowledge Management  

Microsoft Academic Search

Despite the tremendous penetration of the Web into a variety of markets, it has become increasingly clear that current Web structures are simply not well designed for customized information access. By creating CGI scripts, plug-ins, and gateways, and bolting all of it onto the Web in an ad hoc fashion, we have moved away from what could have been a

Hermann A. Maurer

1998-01-01

384

Structured Data on the Web  

Microsoft Academic Search

Summary form only given. Though search on the World-Wide Web has focused mostly on unstructured text, there is an increasing amount of structured data on the Web and growing interest in harnessing such data. Moreover, structured data is starting to play a greater role in many of the social movements enabled by the Web, such as citizen participation in government.

Alon Y. Halevy

2010-01-01

385

Web-based collaboration tools.  

PubMed

In this bimonthly series, the author examines how nurse educators can use Internet and Web-based computer technologies such as search, communication, and collaborative writing tools; social networking and social bookmarking sites; virtual worlds; and Web-based teaching and learning programs. This article describes Web-based collaboration tools and techniques to increase their effectiveness. PMID:19901730

Wink, Diane M

386

TAP: a Semantic Web platform  

Microsoft Academic Search

Activities such as Web Services and the Semantic Web are working to create a distributed web of machine understandable data. We ad- dress three important problems that need to be solved to realize this vision. We discuss the problem of scalable and deployable query systems and present a simple, but general query interface called GetData. We address the issue of

Ramanathan V. Guha; Rob Mccool

2003-01-01

387

Sensor system for web inspection  

DOEpatents

A system for electrically measuring variations over a flexible web has a capacitive sensor including spaced electrically conductive, transmit and receive electrodes mounted on a flexible substrate. The sensor is held against a flexible web with sufficient force to deflect the path of the web, which moves relative to the sensor.

Sleefe, Gerard E. (1 Snowcap Ct., Cedar Crest, NM 87008); Rudnick, Thomas J. (626 E. Jackson Rd., St. Louis, MO 63119); Novak, James L. (11048 Malaguena La. NE., Albuquerque, NM 87111)

2002-01-01

388

Interactive Web Sites for Teens  

ERIC Educational Resources Information Center

|Eighty-three percent of teenagers are online. The average teen spends 5 to 10 hours a week on the Web. When using Web sites, teenagers are easily bored. Teenagers are also not nearly as skilled as adults at navigating the Web and do not really care for glitzy graphics. Insufficient reading skills, immature research strategies, and unwillingness…

Haycock, Ken

2005-01-01

389

Cytoscape Web: an interactive web-based network browser  

PubMed Central

Summary: Cytoscape Web is a web-based network visualization tool–modeled after Cytoscape–which is open source, interactive, customizable and easily integrated into web sites. Multiple file exchange formats can be used to load data into Cytoscape Web, including GraphML, XGMML and SIF. Availability and Implementation: Cytoscape Web is implemented in Flex/ActionScript with a JavaScript API and is freely available at http://cytoscapeweb.cytoscape.org/ Contact: gary.bader@utoronto.ca Supplementary information: Supplementary data are available at Bioinformatics online.

Lopes, Christian T.; Franz, Max; Kazi, Farzana; Donaldson, Sylva L.; Morris, Quaid; Bader, Gary D.

2010-01-01

390

COEUS: "semantic web in a box" for biomedical applications  

PubMed Central

Background As the “omics” revolution unfolds, the growth in data quantity and diversity is bringing about the need for pioneering bioinformatics software, capable of significantly improving the research workflow. To cope with these computer science demands, biomedical software engineers are adopting emerging semantic web technologies that better suit the life sciences domain. The latter’s complex relationships are easily mapped into semantic web graphs, enabling a superior understanding of collected knowledge. Despite increased awareness of semantic web technologies in bioinformatics, their use is still limited. Results COEUS is a new semantic web framework, aiming at a streamlined application development cycle and following a “semantic web in a box” approach. The framework provides a single package including advanced data integration and triplification tools, base ontologies, a web-oriented engine and a flexible exploration API. Resources can be integrated from heterogeneous sources, including CSV and XML files or SQL and SPARQL query results, and mapped directly to one or more ontologies. Advanced interoperability features include REST services, a SPARQL endpoint and LinkedData publication. These enable the creation of multiple applications for web, desktop or mobile environments, and empower a new knowledge federation layer. Conclusions The platform, targeted at biomedical application developers, provides a complete skeleton ready for rapid application deployment, enhancing the creation of new semantic information systems. COEUS is available as open source at http://bioinformatics.ua.pt/coeus/.

2012-01-01

391

Online feature selection with streaming features.  

PubMed

We propose a new online feature selection framework for applications with streaming features where the knowledge of the full feature space is unknown in advance. We define streaming features as features that flow in one by one over time whereas the number of training examples remains fixed. This is in contrast with traditional online learning methods that only deal with sequentially added observations, with little attention being paid to streaming features. The critical challenges for Online Streaming Feature Selection (OSFS) include 1) the continuous growth of feature volumes over time, 2) a large feature space, possibly of unknown or infinite size, and 3) the unavailability of the entire feature set before learning starts. In the paper, we present a novel Online Streaming Feature Selection method to select strongly relevant and nonredundant features on the fly. An efficient Fast-OSFS algorithm is proposed to improve feature selection performance. The proposed algorithms are evaluated extensively on high-dimensional datasets and also with a real-world case study on impact crater detection. Experimental results demonstrate that the algorithms achieve better compactness and higher prediction accuracy than existing streaming feature selection algorithms. PMID:23520258

Wu, Xindong; Yu, Kui; Ding, Wei; Wang, Hao; Zhu, Xingquan

2013-05-01

392

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

393

Web-based SCADA display systems (WSDS) for access via Internet  

Microsoft Academic Search

The World Wide Web (WWW) has become a convenient may to access information on the net because the WWW browser integrates different network services into a common easily accessible user interface. These features coupled with low investment cost are especially suited for accessing information of the SCADA (supervisory control and data acquisition) system. This paper describes a unique Web-based application

B. Qiu; H. B. Gooi

2000-01-01

394

A multi-windowed environment for simultaneous visualization of related algorithms on the World Wide Web  

Microsoft Academic Search

Using algorithm visualization, we can depict the execution of an algorithm as a sequence of graphical snapshots, the viewing of which is controlled by the user. Although the delivery of such visualizations over the Web greatly increases their accessibility, Web-based environments for viewing algorithms often lack the richness of features that characterize similar viewing environments on standalone machines. Here we

Thomas L. Naps; Eric Bressler

1998-01-01

395

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

396

The C-Cube framework: developing autonomic applications through web services  

Microsoft Academic Search

Web services constitute a promising technology to support autonomic computing. Automatic discovery of new services, their composition and binding based on Quality of Service (QoS) are just some of the most promising features that can be provided using web services. In other words, a service oriented system is able to automatically discover, bind, and use, at run time, the services

Gerardo Canfora; Piero Corte; Antonio De Nigro; Debora Desideri; Massimiliano Di Penta; Raffaele Esposito; Amedeo Falanga; Gloria Renna; Rita Scognamiglio; Francesco Torelli; Maria Luisa Villani; Paolo Zampognaro

2005-01-01

397

Application of the sentiment classification techniques for web site monitor system  

Microsoft Academic Search

This paper constructed a web site supervision system to analyze the sentiment orientation of the articles (document, text) on the web sites in intranet. A scheme based on Vector Space Model (VSM) is put forward for identifying the sentiment orientation of document. Considering the feature of a document is relative to the term frequencies appears in the document and corpus,

Chao-Rong Li; Ming-Qing Huang; Yong-Hai Deng; Jian-Ping Li

2010-01-01

398

Epidemiology and the web of causation: Has anyone seen the spider?  

Microsoft Academic Search

'Multiple causation' is the canon of contemporary epidemiology, and its metaphor and model is the 'web of causation.' First articulated in a 1960 U.S. epidemiology textbook, the 'web' remains a widely accepted but poorly elaborated model, reflecting in part the contemporary stress on epidemiologic methods over epidemiologic theories of disease causation. This essay discusses the origins, features, and problems of

Nancy Krieger

1994-01-01

399

The Protégé OWL Plugin: An Open Development Environment for Semantic Web Applications  

Microsoft Academic Search

We introduce the OWL Plugin, a Semantic Web extension of the Proteg´ e ontology development platform. The OWL Plugin can be used to edit ontologies in the Web Ontology Language (OWL), to access description logic reasoners, and to acquire instances for semantic markup. In many of these features, the OWL Plugin has created and facilitated new practices for building Semantic

Holger Knublauch; Ray W. Fergerson; Natalya Fridman Noy; Mark A. Musen

2004-01-01

400

Mental Health Resources for LGBT Collegians: A Content Analysis of College Counseling Center Web Sites  

Microsoft Academic Search

This study content analyzed a randomly selected stratified national sample of 203 four-year United States colleges' counseling center Web sites to assess the degree to which such sites feature information and reference services for lesbian, gay, bisexual, and transgender (LGBT) collegians. Results revealed that LGBT-targeted communications were infrequent. For instance, fewer than one third of counseling center Web sites described

Paul J. Wright; Christopher J. McKinley

2010-01-01

401

Text Categorization Based on K-Nearest Neighbor Approach for Web Site Classification.  

ERIC Educational Resources Information Center

|Discusses text categorization and Web site classification and proposes a three-step classification system that includes the use of Web pages linked with the home page. Highlights include the k-nearest neighbor (k-NN) approach; improving performance with a feature selection method and a term weighting scheme using HTML tags; and similarity…

Kwon, Oh-Woog; Lee, Jong-Hyeok

2003-01-01

402

Object-Oriented Hypermedia Design and J2EE Technology for Web-based Applications  

Microsoft Academic Search

Web-based application development is a difficult ta sk, since these applications include various features, like graphical interfaces, navigational s tructures, business models, and wireless commu- nications, as well as other issues, such as serving a multitude of users, and the need for shorter development time. To overcome these complexities, it is indispensable to use web-based applica- tion designs and software

Habib Karimpour; Ayaz Isazadeh; Mohsen Heydarian

2008-01-01

403

Users' Perceptions of the Web As Revealed by Transaction Log Analysis.  

ERIC Educational Resources Information Center

|Describes the results of a transaction log analysis of a Web search engine, WebCrawler, to analyze user's queries for information retrieval. Results suggest most users do not employ advanced search features, and the linguistic structure often resembles a human-human communication model that is not always successful in human-computer…

Moukdad, Haidar; Large, Andrew

2001-01-01

404

Combining Social Music and Semantic Web for music-related recommender systems  

Microsoft Academic Search

This paper introduces various ways to suggest music-related content on the Web thanks to Semantic Web technologies. Rather than focusing on features of musical signals or running statistical analysis over listening habits, we detail how social networking, user contributions, and other interlinked data published within the scope of the Linking Open Data initiative can be combined to provide data-rich recommendations.

Alexandre Passant; Yves Raimond

405

Assistive browser for conducting web transactions  

Microsoft Academic Search

People with visual impairments use screen readers to browse the Web. Sequential processing of web pages by screen readers causes information overload, making web browsing time-consuming and strenuous. These problems are further exacerbated in web transactions (e.g.: online shopping), which involve multiple steps spanning several web pages. In this paper we present a lightweight approach for doing Web transactions us-

Jalal Mahmud; Yevgen Borodin; I. V. Ramakrishnan

2008-01-01

406

Web Usage, Advertising, and Shopping: Relationship Patterns.  

ERIC Educational Resources Information Center

|Discusses Web sales and explores the differences between heavy, medium, and light Web users in terms of their beliefs about Web advertising, attitudes toward Web advertising, purchasing patterns, and demographics. Suggests marketers need to target Web advertising to particular Web users. (Author/LRW)|

Korgaonkar, Pradeep; Wolin, Lori D.

2002-01-01

407

Contextual and Conceptual Information Retrieval and Navigation on the Web  

NASA Astrophysics Data System (ADS)

The goal of this chapter is to propose a methodology and tools to enhance information retrieval and navigation on the Web through contextual and conceptual help. This methodology provides users with an extended navigation space by adding a conceptual and a semantic layer above Web data. The conceptual layer is made of Galois lattices which cluster Web pages into concepts according to their common features (in particular their textual content). These lattices represent the Global Conceptual Context of Web pages. An additional navigation layer is provided by ontologies which are connected to the conceptual level through specific concepts of the lattices. Users may navigate transparently within each of these three layers and go from one to another very easily.

Le Grand, Bénédicte; Aufaure, Marie-Aude; Soto, Michel

408

Examining E-Relationship Marketing Features on Hotel Websites  

Microsoft Academic Search

This study developed and tested a progressive five-level e-Relationship marketing (e-RM) model. The authors examined e-RM web features of the top 127 hotel companies. The results indicate that the hotel companies in the study did not extensively utilize higher-level (Accountable, Proactive, and Partnership) e-RM features on their websites although they employed many lower-level (Basic and Reactive) features. The study also

Billy Bai; Clark Hu; SooCheong Jang

2007-01-01

409

Environmental controls on food web regimes: A fluvial perspective  

NASA Astrophysics Data System (ADS)

Because food web regimes control the biomass of primary producers (e.g., plants or algae), intermediate consumers (e.g., invertebrates), and large top predators (tuna, killer whales), they are of societal as well as academic interest. Some controls over food web regimes may be internal, but many are mediated by conditions or fluxes over large spatial scales. To understand locally observed changes in food webs, we must learn more about how environmental gradients and boundaries affect the fluxes of energy, materials, or organisms through landscapes or seascapes that influence local species interactions. Marine biologists and oceanographers have overcome formidable challenges of fieldwork on the high seas to make remarkable progress towards this goal. In river drainage networks, we have opportunities to address similar questions at smaller spatial scales, in ecosystems with clear physical structure and organization. Despite these advantages, we still have much to learn about linkages between fluxes from watershed landscapes and local food webs in river networks. Longitudinal (downstream) gradients in productivity, disturbance regimes, and habitat structure exert strong effects on the organisms and energy sources of river food webs, but their effects on species interactions are just beginning to be explored. In fluid ecosystems with less obvious physical structure, like the open ocean, discerning features that control the movement of organisms and affect food web dynamics is even more challenging. In both habitats, new sensing, tracing and mapping technologies have revealed how landscape or seascape features (e.g., watershed divides, ocean fronts or circulation cells) channel, contain or concentrate organisms, energy and materials. Field experiments and direct in situ observations of basic natural history, however, remain as vital as ever in interpreting the responses of biota to these features. We need field data that quantify the many spatial and temporal scales of functional relationships that link environments, fluxes and food web interactions to understand how they will respond to intensifying anthropogenic forcing over the coming decades.

Power, Mary E.

2006-02-01

410

Unsupervised Feature Selection Using Feature Similarity  

Microsoft Academic Search

In this article, we describe an unsupervised feature selection algorithm suitable for data sets, large in both dimension and size. The method is based on measuring similarity between features whereby redundancy therein is removed. This does not need any search and, therefore, is fast. A new feature similarity measure, called maximum information compression index, is introduced. The algorithm is generic

Pabitra Mitra; C. A. Murthy; Sankar K. Pal

2002-01-01

411

Harvesting image databases from the Web.  

PubMed

The objective of this work is to automatically generate a large number of images for a specified object class. A multimodal approach employing both text, metadata, and visual features is used to gather many high-quality images from the Web. Candidate images are obtained by a text-based Web search querying on the object identifier (e.g., the word penguin). The Webpages and the images they contain are downloaded. The task is then to remove irrelevant images and rerank the remainder. First, the images are reranked based on the text surrounding the image and metadata features. A number of methods are compared for this reranking. Second, the top-ranked images are used as (noisy) training data and an SVM visual classifier is learned to improve the ranking further. We investigate the sensitivity of the cross-validation procedure to this noisy training data. The principal novelty of the overall method is in combining text/metadata and visual features in order to achieve a completely automatic ranking of the images. Examples are given for a selection of animals, vehicles, and other classes, totaling 18 classes. The results are assessed by precision/recall curves on ground-truth annotated data and by comparison to previous approaches, including those of Berg and Forsyth and Fergus et al. PMID:21330688

Schroff, Florian; Criminisi, Antonio; Zisserman, Andrew

2011-04-01

412

Web Search for a Planet: The Google Cluster Architecture  

Microsoft Academic Search

Amenable to extensive parallelization, Google's web search application lets different queries run on different processors and, by partitioning the overall index, also lets a single query use multiple processors. to handle this workload, Googless architecture features clusters of more than 15,000 commodity-class PCs with fault tolerant software. This architecture achieves superior performance at a fraction of the cost of a

Luiz André Barroso; Jeffrey Dean; Urs Hölzle

2003-01-01

413

Enhancing an Incremental Clustering Algorithm for Web Page Collections  

Microsoft Academic Search

With the size and state of the Internet today, a good quality approach to organizing this mass of information is of great importance. Clustering web pages into groups of similar documents is one approach, but relies heavily on good feature extraction and document representation as well as a good clustering approach and algorithm. Due to the changing nature of the

Gavin Shaw; Yue Xu

2009-01-01

414

Specifying Quality Requirements for the Web 2.0 Applications  

Microsoft Academic Search

To specify quality requirements for Web 2.0 applications we propose an integrated approach which considers features for contents, functionalities and services. In this work we discuss how to model internal quality, external quality and quality in use views taking into account not only the software characteristics - as those specified in the ISO 9126-1 quality models- but also the own

Luis Olsina; Roberto Sassano; Luisa Mich

2008-01-01

415

Securing the Web Using Human Perception and Visual Object Interpretation  

Microsoft Academic Search

Being motivated by the need for usable Web security systems, we present in this paper new image-based CAPTCHA systems that overcome the weaknesses of commercial CAPTCHAs. We describe Tree and Shape CAPTCHAs in addition to handwritten CAPTCHAs that feature visual objects transformed according to specific principles of cognitive psychology. These transformations, in addition to other security measures we describe, ensure

Amalia I. Rusu; Rebecca Docimo

2009-01-01

416

Discovery of Web Services Based on Collaborated Semantic Link Network  

Microsoft Academic Search

Web service becomes an important paradigm for internet application. To realize userspsila complex requirements, services with different functions, but sharing common features, should be selected quickly from a huge number of services on internet to be collaborated. Researches on the discovery of services have put the emphasis on the finding out of services with similar functions, which is unable to

Fangfang Liu; Xiangfeng Luo; Zheng Xu; Xuhui Liu

2008-01-01

417

Just Add Weights: Markov Logic for the Semantic Web  

Microsoft Academic Search

In recent years, it has become increasingly clear that the vision of the Semantic Web requires uncertain reasoning over rich, first- order representations. Markov logic brings the power of probabilistic modeling to first-order logic by attaching weights to logical formulas and viewing them as templates for features of Markov networks. This gives natural probabilistic semantics to uncertain or even inconsistent

Pedro Domingos; Daniel Lowd; Stanley Kok; Hoifung Poon; Matthew Richardson; Parag Singla

2008-01-01

418

Web Based Application for Distributed Remote Measurement Viewing  

Microsoft Academic Search

The paper discusses web based application for distributed automation. Realization is made over three-layer distributed model. XML table driven communication model is used for heterogeneous connection of different parts of the system. Functionality of the model is delegated and distributed among servers and embedded systems. Majority features of realization, concerning scalability, flexibility, distribution, collecting and delegating of functionality, reliability and

Ivan Stankov; Grisha Spasov

419

The Undergraduate's Companion to American Writers and Their Web Sites.  

ERIC Educational Resources Information Center

This guide presents a selection of the most authoritative, informative and useful Web sites for today's college and university American literature students and scholars. Nearly 300 American authors whose works are features in the most recent editions of widely used literature anthologies are included in this volume. A chronological arrangement…

Bracken, James K.; Hinman, Larry G.

420

Some Experiences in Web-based Management of Group Projects  

Microsoft Academic Search

This paper discusses our experiences in using common Web-based tools to support and to manage group projects, a common form of collaborative learning which has been demonstrated to enhance the development of critical thinking. We attempt to develop a methodology to address common pitfalls such as problems in logistics, uneven distribution of work, and unfair grading. Major features include reference

Stephen C F Chan; Vincent T Y Ng; Albert K W Wu

421

Forest Food Webs  

NSDL National Science Digital Library

This lesson plan is part of the DiscoverySchool.com lesson plan library for grades 6-8. It focuses on the seasonal changes that affect life in a temperate forest ecosystem and how organisms in a temperate forest are dependent on one another for proper nutrition. Students describe the three major types of organisms that live in an ecosystem, three types of consumers, food webs, and food chains. They then create a food web diagram for display in their classrooms. Included are objectives, materials, procedures, discussion questions, evaluation ideas, suggested readings, and vocabulary. There are videos available to order which complement this lesson, and links to teaching tools for making custom quizzes, worksheets, puzzles and lesson plans.

2007-03-12

422

Becoming WebWise  

NSDL National Science Digital Library

Sponsored by the British Broadcasting Corporation (BBC), Becoming Webwise is an online course for the novice Internet user that wants to learn at his/her own pace. The course consists of eight sections that take users through the Internet basics in a simple and easy-to-follow format. Becoming WebWise covers topics such as getting connected, emailing, searching, bookmarking, creating address books, and the basic fundamentals of building a Web page. Users will also learn about technological developments like Digital TV, WAP phones, legal online rights, the history of the Net, as well as other ways of accessing the Internet. The course is estimated to take up to ten hours to complete, and users are able to return to any of the sections as often as they choose.

2001-01-01

423

Building Web Applications  

Microsoft Academic Search

\\u000a Delivering content and applications via web browsers is one of the most important aspects of modern software development. In\\u000a this chapter, we examine how you can build web applications using F#. The topics we cover are as follows:\\u000a \\u000a \\u000a \\u000a \\u000a • \\u000a \\u000a \\u000a Serving static files and dynamic content by directly responding to HTTP requests\\u000a \\u000a \\u000a \\u000a • \\u000a \\u000a \\u000a Using the ASP.NET framework to develop page-based, server-side

Don Syme; Adam Granicz; Antonio Cisternino

424

Forest Food Webs  

NSDL National Science Digital Library

This lesson plan is part of the DiscoverySchool.com lesson plan library for grades 6-8. It focuses on the seasonal changes that affect life in a temperate forest ecosystem and how organisms in a temperate forest are dependent on one another for proper nutrition. Students describe the three major types of organisms that live in an ecosystem, three types of consumers, food webs, and food chains. They then create a food web diagram for display in their classrooms. Included are objectives, materials, procedures, discussion questions, evaluation ideas, suggested readings, and vocabulary. There are videos available to order which complement this lesson, and links to teaching tools for making custom quizzes, worksheets, puzzles and lesson plans.

425

Quantum computational webs  

SciTech Connect

We discuss the notion of quantum computational webs: These are quantum states universal for measurement-based computation, which can be built up from a collection of simple primitives. The primitive elements--reminiscent of building blocks in a construction kit--are (i) one-dimensional states (computational quantum wires) with the power to process one logical qubit and (ii) suitable couplings, which connect the wires to a computationally universal web. All elements are preparable by nearest-neighbor interactions in a single pass, of the kind accessible in a number of physical architectures. We provide a complete classification of qubit wires, a physically well-motivated class of universal resources that can be fully understood. Finally, we sketch possible realizations in superlattices and explore the power of coupling mechanisms based on Ising or exchange interactions.

Gross, D. [Institute for Theoretical Physics, Leibniz University Hannover, D-30167 Hannover (Germany); Eisert, J. [Institute for Physics and Astronomy, University of Potsdam, D-14476 Potsdam (Germany); Institute for Advanced Study Berlin, D-14193 Berlin (Germany)

2010-10-15

426

Forest Food Webs  

NSDL National Science Digital Library

This lesson plan is part of the DiscoverySchool.com lesson plan library for grades 6-8. It focuses on the seasonal changes that affect life in a temperate forest ecosystem and how organisms in a temperate forest are dependent on one another for proper nutrition. Students describe the three major types of organisms that live in an ecosystem, three types of consumers, food webs, and food chains. They then create a food web diagram for display in their classrooms. Included are objectives, materials, procedures, discussion questions, evaluation ideas, suggested readings, and vocabulary. There are videos available to order which complement this lesson, and links to teaching tools for making custom quizzes, worksheets, puzzles and lesson plans.

Cahill, Mary

2007-12-12

427

Building Collaboration Applications that Mix Web Services Hosted Content with P2P Protocols  

Microsoft Academic Search

The most commonly deployed web service applications employ client-server communication patterns, with clients running remotely and services hosted in data centers. In this paper, we make the case for Service-Oriented Colla- boration (SOC) applications that combine service-hosted data with collaboration features implemented using peer- to-peer protocols. Collaboration features are awkward to support solely based on the existing web services technol-

Ken Birman; Jared Cantwell; Daniel Freedman; Qi Huang; Petko Nikolov; Krzysztof Ostrowski

2009-01-01

428

Web-based online public access catalogues of IIT libraries in India: an evaluative study  

Microsoft Academic Search

Purpose – The purpose of the paper is to examine the various features and components of web-based online public access catalogues (OPACs) of IIT libraries in India with the help of a specially designed evaluation checklist. Design\\/methodology\\/approach – The various features of the web-based OPACs in six IIT libraries (IIT Delhi, IIT Bombay, IIT Madras, IIT Kanpur, IIT Guwahati, and

Margam Madhusudhan; Shalini Aggarwal

2011-01-01

429

WebVideoFetcher  

NSDL National Science Digital Library

The WebVideoFetcher is an application designed to allow users to convert and download nearly any audio or video URL from a range of sources, such as YouTube, Google, or Facebook. Visitors can simply drop the URL for the item in question into the handy form here and the application will take care of the rest. This version is compatible with all operating systems.

2012-04-06

430

The value (driven) Web  

Microsoft Academic Search

This paper presents a vision on the importance of values and ethical aspects in web science. We\\u000acreate(d) the Internet, but now the Internet (technology) is shaping our world increasingly: the way\\u000awe experience, interact, transact, conduct business et cetera. The Internet is ubiquitous and vital to\\u000amany aspects of our society; it is substituting some of our existing infrastructures

Nico H. G. Baken; G. van Oortmerssen

2010-01-01

431

Web-Enhanced GPS  

Microsoft Academic Search

Location-based services like reminders, electronic graffiti, and tourist guides normally require a custom, location-sensitive database that must be cus- tom-tailored for the application at hand. This deployment cost reduces the ini- tial appeal of such services. However, there is much location-tagged data al- ready available on the Web which can be easily used to create compelling loca- tion-aware applications with

Ramaswamy Hariharan; John Krumm; Eric Horvitz

2005-01-01

432

Web of Life Game  

NSDL National Science Digital Library

In this game, learners each represent a different organism in an environment. They build a web during the activity, and discover how all the players in an ecosystem depend on each other. As they play, learners will come up with the connections between different species and their environments. At least six people are needed to play this game, and it could be played with a large group as well.

History, American M.

2012-06-26

433

Anthropology Biography Web  

NSDL National Science Digital Library

Part of the Emuseum at Minnesota State University (see the August 22, 2000 Scout Report for the Social Sciences), this Website offers brief, encyclopedic entries on the lives of 392 significant anthropologists (or prominent thinkers in other fields who have influenced the discipline). The entries, written by anthropology students at Minnesota State and alphabetically indexed, give overviews of the careers and contributions of these individuals including short bibliographies -- often with links to useful Web resources.

434

XML Web Services  

Microsoft Academic Search

Web Services are the next hype been built which will undoubtedly revolutionize the IT world with the phenomenal support it provides for distributed computing through the use of standardized protocols which enables the seamless integration of heterogeneous systems across different platforms.\\u000d\\u000a\\u000d\\u000aThrough the use of protocols such as XML, SOAP, WSDL and UDDI, applications can exchange information and interoperate in

Mifla Mashood; G N Wikramanayake

2005-01-01

435

Polar Meteorology: Web Resources  

NSDL National Science Digital Library

By Peter Guest, Research Associate Profession at the Naval Postgraduate School in Monterey, this wonderfully organized set of web resources in polar meteorology can be helpful to educators looking to supplement their lessons. The links are divided into sections, including Current Weather, Current Sea Ice, Climate, Climate Change, Education, Maps, Research Projects, Institutions, Organizations, and People. Visitors will also find a list of general polar links at the end.

Guest, Peter

2011-06-02

436

Web Facts and Fantasy  

Microsoft Academic Search

There is a great deal of research about improving Web server performance and building better, faster servers, but little research in characterizing servers and the load imposed upon them. While some tremendously popular and busy sites, such as netscape.com, playboy.com, and altavista.com, receive several million hits per day, most servers are never subjected to loads of this magnitude. This paper

Stephen Manley; Margo I. Seltzer

1997-01-01

437

NHANES Analysis Web Tutorials  

Cancer.gov

Data from the National Health and Nutrition Examination Survey (NHANES) have provided unique opportunities to study major nutrition, infection, environmental, and chronic health conditions in the US. The National Center for Health Statistics (NCHS) makes NHANES datasets publicly available on its Web site. However, all NHANES users face similar challenges because of the complexity of NHANES' survey design and vast amount of information available in NHANES data.

438

Advanced Web Ranking 2.6  

NSDL National Science Digital Library

Sometimes it may be difficult to get current information about the traffic on a website, and checking all of the major search engines may be time-consuming at times. This application can assist in that process as it checks website positions on all major search engines and also generates customizable tabular, graphical and printable reports. While this version contains all of the features of the standard product, it is in fact a trial version that is only usable for fifteen days. Advanced Web Ranking 2.6 is compatible with all systems running Max OS X 10.2 and Windows 2000 and above.

439

Active WebCam 8.0  

NSDL National Science Digital Library

A number of users may have heard of various webcam programs, and if they remain interested in such devices, Active WebCam 8.0 is worth a look. With this application, users can capture images at up to 30 frames per second, and then can also use the program to stream audio and video. Additionally, users can also control the cameraÂs pan, tilt, and zoom features as they see fit. This version is compatible with computers running Windows 2000, XP, and 2003.

2007-01-01

440

Research on the Web: Antarctic Weather Stations  

NSDL National Science Digital Library

This Web research activity helps students see the link between wind speeds and geographical features. All directions are included in a printable handout. Students begin by gathering wind-speed measurements for 10 weather stations in Antarctica, converting the data, as needed, to allow comparisons. Next, they record wind data for five consecutive days and calculate the average wind speed for each station. They then examine elevation data for the 10 weather stations. They end by developing a hypothesis for the different patterns they've observed.

441

New York Times Books on the Web  

NSDL National Science Digital Library

The highlight of this section of the New York Times website (discussed in the January 26, 1996 Scout Report) is the searchable archive of over 50,000 book reviews, author interviews, and book news articles from the newspaper and the New York Times Book Review since 1980. It also contains the full text of the weekly Book Review (available on the web since January 5, 1997) as well as a feature called "Life and Times: Major authors, in their own words and ours," and selected first chapters from New York Times Book Review or New York Times bestseller list books. Note that these sites, while free, require registration.

1997-01-01

442

Semantic and Interoperable WebGIS  

Microsoft Academic Search

With the property of XML, RDFs, ontology and logic, Semantic Web provides intelligent services on the Web. Taking the advantages of Semantic Web, semantic WebGIS can realize semantic interoperability and integration of GIS on the Web. The key basis of semantic WebGIS is its domain ontology. As an information exchange standard, XML is an important method of implementing semantic WebGIS.

Yi Shanzhen; Lizhu Zhou; Xing Chunxiao; Liu Qilun; Zhang Yong

2001-01-01

443

Clini Web: Managing Clinical Information on the World Wide Web  

Microsoft Academic Search

The World Wide Web is a powerful new way to deliver on-line clinical information, but several problems limit its value to health care professionals: content is highly distributed and difficult to find, clinical information is not separated from non-clinical information, and the current Web technology is unable to support some advanced retrieval capabilities. A system called CliniWeb has been developed

WILLIAM R. HERSH; KEVIN E. BROWN; Larry C Donohoe; EMILY M. CAMPBELL; ASHLEY E. HORACEK

1996-01-01

444

Use of Semantic Web technologies on the BBC Web Sites  

NASA Astrophysics Data System (ADS)

The BBC publishes large amounts of content online, as text, audio and video. As the amount of content grows, we need to make it easy for users to locate items of interest and to draw coherent journeys across them. In this chapter, we describe our use of Semantic Web technologies for achieving this goal. We focus in particular on three BBC Web sites: BBC Programmes, BBC Music and BBC Wildlife Finder, and how those Web sites effectively use the wider Web as their Content Management System.

Raimond, Yves; Scott, Tom; Oliver, Silver; Sinclair, Patrick; Smethurst, Michael

445

THE NSF National Science, Technology, Engineering, and Mathematics Education Digital Library (NSDL) Program; Software for Building a Full-Featured Discipline-Based Web Portal; A Metadata Framework Developed at the Tsinghua University Library To Aid in the Preservation of Digital Resources; A Scalable Architecture for Harvest-Based Digital Libraries; The Design and Evaluation of Interactivities in a Digital Library.  

ERIC Educational Resources Information Center

|Includes five articles that discuss digital library programs related to the National Science Foundation; software for building Web portals; metadata developed at Tsinghua University Library (China) for preserving digital resources; the Open Archives Initiative for metadata and the need for a common infrastructure; and interactivity in a digital…

Zia, Lee L.; Almasy, Edward; Sleasman, David; Bower, Rachael; Niu, Jingfang; Liu, Xiaoming; Maly, Kurt; Zubair, Mohammad; Nelson, Michael L.; Brody, Tim; Harnard, Stevan; Carr, Les; Budhu, Muniram; Coleman, Anita

2002-01-01

446

A Review of Web Document Clustering Approaches  

NASA Astrophysics Data System (ADS)

Nowadays, the Internet has become the largest data repository, facing the problem of information overload. Though, the web search environment is not ideal. The existence of an abundance of information, in combination with the dynamic and heterogeneous nature of the Web, makes information retrieval a difficult process for the average user. It is a valid requirement then the development of techniques that can help the users effectively organize and browse the available information, with the ultimate goal of satisfying their information need. Cluster analysis, which deals with the organization of a collection of objects into cohesive groups, can play a very important role towards the achievement of this objective. In this chapter, we present an exhaustive survey of web document clustering approaches available on the literature, classified into three main categories: text-based, link-based and hybrid. Furthermore, we present a thorough comparison of the algorithms based on the various facets of their features and functionality. Finally, based on the review of the different approaches we conclude that although clustering has been a topic for the scientific community for three decades, there are still many open issues that call for more research.

Oikonomakou, Nora; Vazirgiannis, Michalis

447

Phylogeny versus body size as determinants of food web structure.  

PubMed

Food webs are the complex networks of trophic interactions that stoke the metabolic fires of life. To understand what structures these interactions in natural communities, ecologists have developed simple models to capture their main architectural features. However, apparently realistic food webs can be generated by models invoking either predator-prey body-size hierarchies or evolutionary constraints as structuring mechanisms. As a result, this approach has not conclusively revealed which factors are the most important. Here we cut to the heart of this debate by directly comparing the influence of phylogeny and body size on food web architecture. Using data from 13 food webs compiled by direct observation, we confirm the importance of both factors. Nevertheless, phylogeny dominates in most networks. Moreover, path analysis reveals that the size-independent direct effect of phylogeny on trophic structure typically outweighs the indirect effect that could be captured by considering body size alone. Furthermore, the phylogenetic signal is asymmetric: closely related species overlap in their set of consumers far more than in their set of resources. This is at odds with several food web models, which take only the view-point of consumers when assigning interactions. The echo of evolutionary history clearly resonates through current food webs, with implications for our theoretical models and conservation priorities. PMID:22628467

Naisbit, Russell E; Rohr, Rudolf P; Rossberg, Axel G; Kehrli, Patrik; Bersier, Louis-Félix

2012-05-23

448

Phylogeny versus body size as determinants of food web structure  

PubMed Central

Food webs are the complex networks of trophic interactions that stoke the metabolic fires of life. To understand what structures these interactions in natural communities, ecologists have developed simple models to capture their main architectural features. However, apparently realistic food webs can be generated by models invoking either predator–prey body-size hierarchies or evolutionary constraints as structuring mechanisms. As a result, this approach has not conclusively revealed which factors are the most important. Here we cut to the heart of this debate by directly comparing the influence of phylogeny and body size on food web architecture. Using data from 13 food webs compiled by direct observation, we confirm the importance of both factors. Nevertheless, phylogeny dominates in most networks. Moreover, path analysis reveals that the size-independent direct effect of phylogeny on trophic structure typically outweighs the indirect effect that could be captured by considering body size alone. Furthermore, the phylogenetic signal is asymmetric: closely related species overlap in their set of consumers far more than in their set of resources. This is at odds with several food web models, which take only the view-point of consumers when assigning interactions. The echo of evolutionary history clearly resonates through current food webs, with implications for our theoretical models and conservation priorities.

Naisbit, Russell E.; Rohr, Rudolf P.; Rossberg, Axel G.; Kehrli, Patrik; Bersier, Louis-Felix

2012-01-01

449

Food marketing on popular children's web sites: a content analysis.  

PubMed

In 2006 the Institute of Medicine (IOM) concluded that food marketing was a contributor to childhood obesity in the United States. One recommendation of the IOM committee was for research on newer marketing venues, such as Internet Web sites. The purpose of this cross-sectional study was to answer the IOM's call by examining food marketing on popular children's Web sites. Ten Web sites were selected based on market research conducted by KidSay, which identified favorite sites of children aged 8 to 11 years during February 2005. Using a standardized coding form, these sites were examined page by page for the existence, type, and features of food marketing. Web sites were compared using chi2 analyses. Although food marketing was not pervasive on the majority of the sites, seven of the 10 Web sites contained food marketing. The products marketed were primarily candy, cereal, quick serve restaurants, and snacks. Candystand.com, a food product site, contained a significantly greater amount of food marketing than the other popular children's Web sites. Because the foods marketed to children are not consistent with a healthful diet, nutrition professionals should consider joining advocacy groups to pressure industry to reduce online food marketing directed at youth. PMID:18375231

Alvy, Lisa M; Calvert, Sandra L

2008-04-01

450

Biodiversity maintenance in food webs with regulatory environmental feedbacks.  

PubMed

Although the food web is one of the most fundamental and oldest concepts in ecology, elucidating the strategies and structures by which natural communities of species persist remains a challenge to empirical and theoretical ecologists. We show that simple regulatory feedbacks between autotrophs and their environment when embedded within complex and realistic food-web models enhance biodiversity. The food webs are generated through the niche-model algorithm and coupled with predator-prey dynamics, with and without environmental feedbacks at the autotroph level. With high probability and especially at lower, more realistic connectance levels, regulatory environmental feedbacks result in fewer species extinctions, that is, in increased species persistence. These same feedback couplings, however, also sensitize food webs to environmental stresses leading to abrupt collapses in biodiversity with increased forcing. Feedback interactions between species and their material environments anchor food-web persistence, adding another dimension to biodiversity conservation. We suggest that the regulatory features of two natural systems, deep-sea tubeworms with their microbial consortia and a soil ecosystem manifesting adaptive homeostatic changes, can be embedded within niche-model food-web dynamics. PMID:17240397

Bagdassarian, Carey K; Dunham, Amy E; Brown, Christopher G; Rauscher, Daniel

2006-12-15

451

Emotional design of web page  

Microsoft Academic Search

The design of Web page should be Internet-user-oriented. The key factor of a successful Web page design lies in that the designer can find out counterparts of products in the real world. Another important factor of a successful-designed web page is that the designer can represent the products by a combination of harmonious and inducing colors, images and characters. The

Nan Jiang I; Xinyu Feng; Hui Liu; Juan Liu

2008-01-01

452

Clustering Deep Web Databases Semantically  

Microsoft Academic Search

Deep Web database clustering is a key operation in organizing Deep Web resources. Cosine similarity in Vector Space Model\\u000a (VSM) is used as the similarity computation in traditional ways. However it cannot denote the semantic similarity between\\u000a the contents of two databases. In this paper how to cluster Deep Web databases semantically is discussed. Firstly, a fuzzy\\u000a semantic measure, which

Ling Song; Jun Ma; Po Yan; Li Lian; Dongmei Zhang

2008-01-01

453

A Study of Spider Webs  

NSDL National Science Digital Library

Many people do not like spiders and consider them pests. However, spiders provide a service to humans. They eat many of the insects that bother people. In this 7th grade life science activity, students will study 4-6 spider webs and discover what and how much spiders eat. They will identify the spiders building the webs, collect data and make observations related to the webs and what the spiders eat. They will use the information to develop a conclusion.

454

Web Searching, Sleuthing and Sifting  

NSDL National Science Digital Library

These site offers tips and guidance to help users make effective and fast Internet searches. Web Searching, Sleuthing and Sifting, part of a course taught by Professor and Librarian Angela Elkordy of the Sage Colleges, Albany and Troy, NY, is designed as an introduction to Web searching methods and techniques, aimed specifically at newer users. The site offers an overview of the Internet, an introduction to searchable Web resources, and discussions on resource evaluation and power searching techniques.

455

Name Disambiguation Using Web Connection  

Microsoft Academic Search

Name disambiguation is an important challenge in data cleaning. In this paper, we focus on the problem that multiple real-world objects (e.g., authors, actors) in a dataset share the same name. We show that Web corpora can be exploited to significantly improve the accuracy (i.e. precision and recall) of name disambiguation. We introduce a novel approach called WebNaD (Web-based Name

Yiming Lu; Zaiqing Nie; Taoyuan Cheng; Ying Gao; Ji-Rong Wen

456

Connection Scheduling in Web Servers  

Microsoft Academic Search

Under high loads, a Web server may be servicingmany hundreds of connections concurrently.In traditional Web servers, the question of the orderin which concurrent connections are servicedhas been left to the operating system. In thispaper we ask whether servers might provide betterservice by using non-traditional service ordering.In particular, for the case when a Web serveris serving static les, we examine the

Mark Crovella; Robert Frangioso; Mor Harchol-balter

1999-01-01

457

Animal Diversity Web  

NSDL National Science Digital Library

A comprehensive collection of Kingdom Animalia species accounts with information on distributions, natural history, conservation, and economic importance. Site features a wealth of information, pictures, and sounds. Entries are arranged in a taxonomic hierarchy. Educator resources are available for grades K-college, and feature a species account or photo submission section.

458

75 FR 27986 - Electronic Filing System-Web (EFS-Web) Contingency Option  

Federal Register 2010, 2011, 2012, 2013

...PTO-P-2010-0040] Electronic Filing System--Web (EFS-Web) Contingency Option AGENCY: United States Patent and...electronic filing system, Electronic Filing System--Web (EFS-Web) by providing a new contingency option...

2010-05-19

459

Gauging the Success of Your Web Site  

ERIC Educational Resources Information Center

|Web analytics is a way to measure and optimize Web site performance, says Jason Burby, director of Web analytics for ZAAZ Inc., a Web design and development firm in Seattle with a countrywide client base. He compares it to using Evite, which is a useful, free web service that makes it easy to send out party and other invitations and,…

Goldsborough, Reid

2005-01-01

460

Persistence of Web References in Scientific Research  

Microsoft Academic Search

The web has greatly improved the accessibility of scientific information, however the role of the web in formal scientific publishing has been debated. Some argue that the lack of persistence of web resources means that they should not be cited in scientific research. We analyze references to web resources in computer science publications, finding that the number of web references

Steve Lawrence; David M. Pennock; Gary William Flake; Robert Krovetz; Frans Coetzee; Eric J. Glover; Finn Årup Nielsen; Andries Kruger; C. Lee Giles

2001-01-01

461

Detecting near-duplicates for web crawling  

Microsoft Academic Search

Near-duplicate web documents are abundant. Two such documents dier from each other in a very small portion that displays advertisements, for example. Such dierences are irrelevant for web search. So the quality of a web crawler increases if it can assess whether a newly crawled web page is a near-duplicate of a previously crawled web page or not. In the

Gurmeet Singh Manku; Arvind Jain; Anish Das Sarma

2007-01-01

462

Abusing locality in shared web hosting  

Microsoft Academic Search

The increasing popularity of the World Wide Web has made more and more individuals and companies to identify the need of acquiring a Web presence. The most common way of acquiring such a presence is through Web hosting companies and the most popular hosting solution is shared Web hosting. In this paper we investigate the workings of shared Web hosting

Nick Nikiforakis; Wouter Joosen; Martin Johns

2011-01-01

463

Semantic analysis of web site audience  

Microsoft Academic Search

With the emergence of the World Wide Web, analyzing and improving Web communication has become essential to adapt the Web content to the visitors' expectations. Web communication analysis is traditionally performed by Web analytics software, which produce long lists of page-based audience metrics. These results sufier from page synonymy, page polysemy, page temporality, and page volatility. In addition, the metrics

Jean-pierre Norguet; Esteban Zimányi; Ralf Steinberger

2006-01-01

464

Commerce Related Web Search: Current Trends  

Microsoft Academic Search

The level of commerce related Web search is a major indicator of the growth of e-commerce. Web queries are a key element in how people purchase services and products via the Web. People create Web queries in order to translate their information problems into a demand for products and services. Our paper provides results from studies analyzing Web search logs

Amanda Spink; Bernard J. Jansen

2007-01-01

465

Web Directory Construction Using Lexical Chains  

Microsoft Academic Search

Web Directories provide a way of locating relevant information on the Web. Typically, Web Directories rely on humans putting in significant time and effort into finding important pages on the Web and categorizing them in the Directory. In this paper we present a way for automating the creation of a Web Directory. At a high level, our method takes as

Sofia Stamou; Vlassis Krikos; Pavlos Kokosis; Alexandros Ntoulas; Dimitris Christodoulakis

2005-01-01

466

A Model of Versioned Web Sites  

Microsoft Academic Search

In this paper we present a model of versioned web sites which is aimed at building a web site conflguration. The web site conflguration is a consistent version of the web site and serves for navigation purposes. We exploit the fact that the versioning of web sites is in many aspects similar to versioning of software systems (and their components).

Mária Bieliková; Ivan Noris

2004-01-01

467

The Emerging Web of Linked Data  

Microsoft Academic Search

The paper discusses the semantic Web and Linked Data. The classic World Wide Web is built upon the idea of setting hyperlinks between Web documents. These hyperlinks are the basis for navigating and crawling the Web.Technologically, the core idea of Linked Data is to use HTTP URLs not only to identify Web documents, but also to identify arbitrary real world

Christian Bizer

2009-01-01

468

Intellectual property aspects of web publishing  

Microsoft Academic Search

This paper addresses how intellectual property affects the Web in general, and content publishing on the Web in particular. Before its commercialization, the Web was perceived as being free and unregulated; this assumption is no longer true. Nowadays, content providers need to know which practices on the Web can result in potential legal problems. The vast majority of Web sites

Holger M. Kienle; Daniel M. Germán; Scott R. Tilley; Hausi A. Müller

2004-01-01

469

Engineering Semantic Web Information Systems in Hera  

Microsoft Academic Search

The success of the World Wide Web has caused the concept of information system to change. Web Information Systems (WIS) use from the Web its paradigm and tech- nologies in order to retrieve information from sources on the Web, and to present the information in terms of a Web or hypermedia presentation. Hera is a methodology that supports the design

Richard Vdovjak; Flavius Fransincar; Geert-jan Houben; Peter Barna

2003-01-01

470

Active Query Caching for Database Web Servers  

Microsoft Academic Search

A substantial portion of web trac consists of queries to database web servers. Unfortunately, a common technique to improve web scalability, proxy caching, is ineective for database web servers because existing web proxy servers cannot cache queries. To address this problem, we modify a recently proposed enhanced proxy server, called an active proxy, to enable Active Query Caching. Our approach

Qiong Luo; Jeffrey F. Naughton; Rajasekar Krishnamurthy; Pei Cao; Yunrui Li

2000-01-01

471

University websites and dialogic features for building relationships with potential students  

Microsoft Academic Search

Using Kent and Taylor's dialogic principles, a content analysis of 232 university websites was conducted. Results indicate that liberal arts institutions tend to use more dialogic web features than national doctoral universities. Tier 3 institutions have a more significant number of dialogic website features than Tier 4 institutions. Finally, a small correlation was found between the use of dialogic features

Joye Gordon; Susan Berhow

2009-01-01

472

Genetic toxicology: web resources.  

PubMed

Genetic toxicology is the scientific discipline dealing with the effects of chemical, physical and biological agents on the heredity of living organisms. The Internet offers a wide range of online digital resources for the field of Genetic Toxicology. The history of genetic toxicology and electronic data collections are reviewed. Web-based resources at US National Library of Medicine (NLM), including MEDLINE, PUBMED, Gateway, Entrez, and TOXNET, are discussed. Search strategies and Medical Subject Headings (MeSH) are reviewed in the context of genetic toxicology. The TOXNET group of databases are discussed with emphasis on those databases with genetic toxicology content including GENE-TOX, TOXLINE, Hazardous Substances Data Bank, Integrated Risk Information System, and Chemical Carcinogenesis Research Information System. Location of chemical information including chemical structure and linkage to health and regulatory information using CHEMIDPLUS at NLM and other databases is reviewed. Various government agencies have active genetic toxicology research programs or use genetic toxicology data to assist fulfilling the agency's mission. Online resources at the US Food and Drug Administration (FDA), the US Environmental Protection Agency (EPA), the National Institutes of Environmental Health Sciences, and the National Toxicology Program (NTP) are outlined. Much of the genetic toxicology for pharmaceuticals, industrial chemicals and pesticides that is performed in the world is regulatory-driven. Regulatory web resources are presented for the laws mandating testing, guidelines on study design, Good Laboratory Practice (GLP) regulations, and requirements for electronic data collection and reporting. The Internet provides a range of other supporting resources to the field of genetic toxicology. The web links for key professional societies and journals in genetic toxicology are listed. Distance education, educational media resources, and job placement services are also available online in the field of genetic toxicology. As molecular biology and computational tools improve, new areas within genetic toxicology such as structural activity relationship analysis, mutational spectra databases and toxicogenomics, now have resources online as well. PMID:11955688

Young, Robert R

2002-04-25

473

Interoperability Between Coastal Web Atlases Using Semantic Mediation: A Case Study of the International Coastal Atlas Network (ICAN)  

NASA Astrophysics Data System (ADS)

Coastal mapping plays an important role in informing marine spatial planning, resource management, maritime safety, hazard assessment and even national sovereignty. As such, there is now a plethora of data/metadata catalogs, pre-made maps, tabular and text information on resource availability and exploitation, and decision-making tools. A recent trend has been to encapsulate these in a special class of web-enabled geographic information systems called a coastal web atlas (CWA). While multiple benefits are derived from tailor-made atlases, there is great value added from the integration of disparate CWAs. CWAs linked to one another can query more successfully to optimize planning and decision-making. If a dataset is missing in one atlas, it may be immediately located in another. Similar datasets in two atlases may be combined to enhance study in either region. *But how best to achieve semantic interoperability to mitigate vague data queries, concepts or natural language semantics when retrieving and integrating data and information?* We report on the development of a new prototype seeking to interoperate between two initial CWAs: the Marine Irish Digital Atlas (MIDA) and the Oregon Coastal Atlas (OCA). These two mature atlases are used as a testbed for more regional connections, with the intent for the OCA to use lessons learned to develop a regional network of CWAs along the west coast, and for MIDA to do the same in building and strengthening atlas networks with the UK, Belgium, and other parts of Europe. Our prototype uses semantic interoperability via services harmonization and ontology mediation, allowing local atlases to use their own data structures, and vocabularies (ontologies). We use standard technologies such as OGC Web Map Services (WMS) for delivering maps, and OGC Catalogue Service for the Web (CSW) for delivering and querying ISO-19139 metadata. The metadata records of a given CWA use a given ontology of terms called local ontology. Human or machine users formulate their requests using a common ontology of metadata terms, called global ontology. A CSW mediator rewrites the user’s request into CSW requests over local CSWs using their own (local) ontologies, collects the results and sends them back to the user. To extend the system, we have recently added global maritime boundaries and are also considering nearshore ocean observing system data. Ongoing work includes adding WFS, error management, and exception handling, enabling Smart Searches, and writing full documentation. This prototype is a central research project of the new International Coastal Atlas Network (ICAN), a group of 30+ organizations from 14 nations (and growing) dedicated to seeking interoperability approaches to CWAs in support of coastal zone management and the translation of coastal science to coastal decision-making.

Wright, D. J.; Lassoued, Y.; Dwyer, N.; Haddad, T.; Bermudez, L. E.; Dunne, D.

2009-12-01

474

IDL Grid Web Portal  

NASA Astrophysics Data System (ADS)

Image Data Language is a software for data analysis, visualization and cross-platform application development. The potentiality of IDL is well-known in the academic scientific world, especially in the astronomical environment where thousands of procedures are developed by using IDL. The typical use of IDL is the interactive mode but it is also possible to run IDL programs that do not require any interaction with the user, submitting them in batch or background modality. Through the interactive mode the user immediately receives images or other data produced in the running phase of the program; in batch or background mode, the user will have to wait for the end of the program, sometime for many hours or days to obtain images or data that IDL produced as output: in fact in Grid environment it is possible to access to or retrieve data only after completion of the program. The work that we present gives flexibility to IDL procedures submitted to the Grid computer infrastructure. For this purpose we have developed an IDL Grid Web Portal to allow the user to access the Grid and to submit IDL programs granting a full job control and the access to images and data generated during the running phase, without waiting for their completion. We have used the PHP technology and we have given the same level of security that Grid normally offers to its users. In this way, when the user notices that the intermediate program results are not those expected, he can stop the job, change the parameters to better satisfy the computational algorithm and resubmit the program, without consuming the CPU time and other Grid resources. The IDL Grid Web Portal allows you to obtain IDL generated images, graphics and data tables by using a normal browser. All conversations from the user and the Grid resources occur via Web, as well as authentication phases. The IDL user has not to change the program source much because the Portal will automatically introduce the appropriate modification before submitting the IDL program to the Grid. When the user wishes, he will be able to check the status of his program and outputs, if any, because the Portal will assign the users a specific and univocal session identification number. This Web portal runs in the Trinacria Grid Virtual Laboratory and fully exploits the power of this grid in terms of CPU and data storage.

Massimino, P.; Costa, A.

2008-08-01

475

Copepod Web Portal  

NSDL National Science Digital Library

The Copepod Web Portal, from the Department of Environmental Sciences at the University of L'Aquila in Italy, provides a comprehensive and nicely designed set of online resources for those interested in this "largest and most diversified group of crustaceans." The site includes a detailed review of copepod systematics; an international directory of copepodologists; a sizeable list of references; and numerous links to related books, journals, papers, and other resources -- including downloadable version of Monoculus: The Copepod Newsletter. A small number of links lead to sites not accessible without special permission.

Pesce, G. L.

1999-01-01

476

The Real Mingus Web  

NSDL National Science Digital Library

The late Charles Mingus was one of the jazz world's most accomplished bassists and composers, and his music lives on after his death through the concerted efforts of his wife, Sue Mingus, and the Charles Mingus Big Band. This Web site will take users to a site devoted to Mingus that includes a brief biography, information about the Mingus Big Band, a gallery of images, and brief writings by Mingus himself. The writings section may be the most compelling, as it contains brief explanations of his song titles and his Grammy-nominated liner notes for his 1971 album, Let My Children Hear Music.

477

MAPI: towards the integrated exploitation of bioinformatics Web Services  

PubMed Central

Background Bioinformatics is commonly featured as a well assorted list of available web resources. Although diversity of services is positive in general, the proliferation of tools, their dispersion and heterogeneity complicate the integrated exploitation of such data processing capacity. Results To facilitate the construction of software clients and make integrated use of this variety of tools, we present a modular programmatic application interface (MAPI) that provides the necessary functionality for uniform representation of Web Services metadata descriptors including their management and invocation protocols of the services which they represent. This document describes the main functionality of the framework and how it can be used to facilitate the deployment of new software under a unified structure of bioinformatics Web Services. A notable feature of MAPI is the modular organization of the functionality into different modules associated with specific tasks. This means that only the modules needed for the client have to be installed, and that the module functionality can be extended without the need for re-writing the software client. Conclusions The potential utility and versatility of the software library has been demonstrated by the implementation of several currently available clients that cover different aspects of integrated data processing, ranging from service discovery to service invocation with advanced features such as workflows composition and asynchronous services calls to multiple types of Web Services including those registered in repositories (e.g. GRID-based, SOAP, BioMOBY, R-bioconductor, and others).

2011-01-01

478

Web-based Altimeter Service  

NASA Astrophysics Data System (ADS)

We have developed a web-based system to allow updating and subsetting of TOPEX data. The Altimeter Service will be operated by PODAAC along with their other provision of oceanographic data. The Service could be easily expanded to other mission data. An Altimeter Service is crucial to the improvement and expanded use of altimeter data. A service is necessary for altimetry because the result of most interest - sea surface height anomaly (SSHA) - is composed of several components that are updated individually and irregularly by specialized experts. This makes it difficult for projects to provide the most up-to-date products. Some components are the subject of ongoing research, so the ability for investigators to make products for comparison or sharing is important. The service will allow investigators/producers to get their component models or processing into widespread use much more quickly. For coastal altimetry, the ability to subset the data to the area of interest and insert specialized models (e.g., tides) or data processing results is crucial. A key part of the Altimeter Service is having data producers provide updated or local models and data. In order for this to succeed, producers need to register their products with the Altimeter Service and to provide the product in a form consistent with the service update methods. We will describe the capabilities of the web service and the methods for providing new components. Currently the Service is providing TOPEX GDRs with Retracking (RGDRs) in netCDF format that has been coordinated with Jason data. Users can add new orbits, tide models, gridded geophysical fields such as mean sea surface, and along-track corrections as they become available and are installed by PODAAC. The updated fields are inserted into the netCDF files while the previous values are retained for comparison. The Service will also generate SSH and SSHA. In addition, the Service showcases a feature that plots any variable from files in netCDF. The research described here was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.

Callahan, P. S.; Wilson, B. D.; Xing, Z.; Raskin, R. G.

2010-12-01

479

SharpSpider: Spidering the Web through Web Services  

Microsoft Academic Search

Web search engines have become an indispensable utility for Internet users. In the near future, however, Web search engines will not only be expected to provide quality search results, but also to enable applications to search and exploit their index repositories directly. We present here SharpSpi- der, a distributed, C# spider designed to address the is- sues of scalability, decentralisation

Ken Moody; Marco A. Palomino

2003-01-01

480

Working the Web: An Empirical Model of Web Use.  

ERIC Educational Resources Information Center

|This paper investigates how knowledge workers utilize the Web to seek external information as part of their daily work. Thirty-four participants from seven companies were interviewed about their information needs and preferences. In addition, a custom-developed software application recorded each participant's Web behavior for a two week…

Choo, Chun Wei; Detlor, Brian; Turnbull, Don

481

Deaf World Web: The Central Deaf Point on the Web  

NSDL National Science Digital Library

Deaf World Web is intended to be a nexus on the Internet of information about the Deaf around the world. It provides deaf and hearing people information on Deaf in all subjects. The Deaf World Web includes information on sign language, the history of deaf, DEAFinitions, and other fascinating material on deafness. The Resources section has excellent information about technology, services, and associations.

Lapiak, Jolanta.

1998-01-01

482

Improving query services of web map by web mining  

NASA Astrophysics Data System (ADS)

Web map is the hybrid of map and the World Wide Web (known as Web). It is usually created with WebGIS techniques. With the rapid social development, web maps oriented the public are facing pressure that dissatisfy the increased demanding. The geocoding database plays a key role in supporting query services effectively. The traditional geocoding method is laborious and time-consuming. And there is much online spatial information, which would be the supplementary information source for geocoding. Therefore, this paper discusses how to improve query services by web mining. The improvement can be described from three facets: first, improving location query by discovering and extracting address information from the Web to extend geocoding database. Second, enhancing the ability of optimum path query of public traffic and buffer query by spatial analyzing and reasoning on the extended geocoding database. Third, adjusting strategies of collecting data according to patterns discovered by web map query mining. Finally, this paper presents the designing of the application system and experimental results.

Huang, Maojun

2007-11-01

483

Trust on the Web: Some Web Science Research Challenges  

Microsoft Academic Search

Abtract Web Science is the interdisciplinary study of the World Wide Web as a first-order object in order to understand its relationship with the wider societies in which it is embedded, and in order to facilitate its future engineering as a beneficial object. In this paper, research issues and challenges relating to the vital topic of trust are reviewed, showing

Kieron O'Hara; Wendy Hall

484

Work of the Web Weavers: Web Development in Academic Libraries  

ERIC Educational Resources Information Center

|Although the library's Web site has become a standard tool for seeking information and conducting research in academic institutions, there are a variety of ways libraries approach the often challenging--and sometimes daunting--process of Web site development and maintenance. Three librarians at Western Michigan University explored issues related…

Bundza, Maira; Vander Meer, Patricia Fravel; Perez-Stable, Maria A.

2009-01-01

485

Automated Web Page Synthesis in Adaptive Web Systems  

Microsoft Academic Search

An adaptive Web system adapts the Web pages to its users, based on the current state of the system. There are two approaches to this page adaptation: either the pages exist statically or they are gen- erated dynamically. In the first approach, the system may add, remove, or change the fragments inside the pages to adapt it. In this case,

Hossein Sadat; Ali Ghorbani

486

Web engineering: managing the complexity of web systems development  

Microsoft Academic Search

In the last few years our knowledge about how to develop large complex web systems have grown rapidly. In this paper we attempt to arrange this knowledge into a schema based on how our knowledge gets matured as we get more experience in developing large complex web systems. Based on this we propose a systematic approach to developing large complex

Athula Ginige

2002-01-01

487

WebCMS: A Web-Based Course Management System  

Microsoft Academic Search

This paper describes the development of and initial experiences with WebCMS (a Web-based course management system), a learning management system developed in the School of Computer Science and Engineering (CSE) at the University of New South Wales (UNSW). The system was developed to facilitate existing CSE practices and overcome limitations of existing CSE course management tools, but has evolved into

Siew Siew Ong; John Shepherd

2002-01-01

488

Bringing Web 2.0 to Web Lectures  

ERIC Educational Resources Information Center

|Purpose: At many universities, web lectures have become an integral part of the e-learning portfolio over the last few years. While many aspects of the technology involved, like automatic recording techniques or innovative interfaces for replay, have evolved at a rapid pace, web lecturing has remained independent of other important developments…

Ketterl, Markus; Mertens, Robert; Vornberger, Oliver

2009-01-01

489

Web Service Orchestration of OGC Web Services for Disaster Management  

Microsoft Academic Search

Summary Flexibility and reusability are major goals when developing complex applications based on OGC Web Services (OWS). Within the project OK- GIS ( www.ok-gis.de ) we evaluate the suitability of the Web Service Or- chestration (WSO) technology as possible solution for disaster manage- ment scenarios. We present an example of a part of an evacuation scenario after a bomb has

Albrecht Weiser; Alexander Zipf

2007-01-01

490

Metadata for Web Resources: How Metadata Works on the Web.  

ERIC Educational Resources Information Center

|This paper discusses bibliographic control of knowledge resources on the World Wide Web. The first section sets the context of the inquiry. The second section covers the following topics related to metadata: (1) definitions of metadata, including metadata as tags and as descriptors; (2) metadata on the Web, including general metadata systems,…

Dillon, Martin

491

A Web Usage Mining Framework for Mining Evolving User Profiles in Dynamic Web Sites  

Microsoft Academic Search

In this paper, we present a complete framework and findings in mining Web usage patterns from Web log files of a real Web site that has all the challenging aspects of real-life Web usage mining, including evolving user profiles and external data describing an ontology of the Web content. Even though the Web site under study is part of a

Olfa Nasraoui; Maha Soliman; Esin Saka; Antonio Badia; Richard Germain

2008-01-01

492

Develop Web GIS Based Intelligent Transportation Application Systems with Web Service Technology  

Microsoft Academic Search

The GIS Web service technology provides a new mechanism and an effective method to develop next generation GIS system. This paper investigates the method to develop Web GIS based ITS application systems with GIS Web service technology. Based on the OGC GIS Web service framework and SOA architecture, a distributed and Web service enabled Web-GIS based ITS application system is

Xiaolin Lu

2006-01-01

493

Web2Quests: Updating a Popular Web-Based Inquiry-Oriented Activity  

ERIC Educational Resources Information Center

|WebQuest is a popular inquiry-oriented activity in which learners use Web resources. Since the creation of the innovation, almost 15 years ago, the Web has changed significantly, while the WebQuest technique has changed little. This article examines possible applications of new Web trends on WebQuest instructional strategy. Some possible…

Kurt, Serhat

2009-01-01

494

Working with WebQuests: Making the Web Accessible to Students with Disabilities.  

ERIC Educational Resources Information Center

|This article describes how students with disabilities in regular classes are using the WebQuest lesson format to access the Internet. It explains essential WebQuest principles, creating a draft Web page, and WebQuest components. It offers an example of a WebQuest about salvaging the sunken ships, Titanic and Lusitania. A WebQuest planning form is…

Kelly, Rebecca

2000-01-01

495

Designing using manufacturing features  

NASA Astrophysics Data System (ADS)

This paper presents a design system that enables the composition of a part using manufacturing features. Features are selected from feature libraries. Upon insertion, the system ensures that the feature does not contradict the design-for-manufacture rules. This helps eliminating costly manufacturing problems. The system is developed as an extension to a commercial CAD/CAM system Pro/Engineer.

Szecsi, T.; Hoque, A. S. M.

2012-04-01

496

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

497

Web services interface for Space Weather: NeQuick 2 web and experimental TEC Calibration  

NASA Astrophysics Data System (ADS)

A web front-end has been recently developed and released to allow retrieving and plotting ionospheric parameters computed by the latest version of the model, NeQuick 2. NeQuick is a quick-run ionospheric electron density model particularly designed for trans-ionospheric propagation applications. It has been developed at the Aeronomy and Radiopropagation Laboratory (now T/ICT4D Laboratory) of the Abdus Salam International Centre for Theoretical Physics (ICTP) - Trieste, Italy with the collaboration of the Institute for Geophysics, Astrophysics and Meteorology (IGAM) of the University of Graz, Austria. To describe the electron density of the ionosphere up to the peak of the F2 layer, NeQuick uses a profile formulation which includes five semi-Epstein layers with modelled thickness parameters. Through a simple web interface users can exploit all the model features including the possibility of computing the electron density and visualizing the corresponding Total Electron Content (TEC) along any ground-to-satellite straight line ray-path. Indeed, the TEC is the ionospheric parameter retrieved from the GPS measurements. It complements the experimental data obtained with diverse kinds of sensors and can be considered a major source of ionospheric information. Since the TEC is not a direct measurement, a "de-biasing" procedure or calibration has to be applied to obtain the relevant values from the raw GPS observables. Using the observation and navigation RINEX files corresponding to a single receiver as input data, the web application allows the user to compute the slant and/or vertical TEC following the concept of the "arc-by-arc" offsets estimation. The combined use of both tools, freely available from the T/ICT4D Web site, will allow the comparison of experimentally derived slant and vertical TEC with modelled values. An online demonstration of the capabilities of the mentioned web services will be illustrated.

Migoya Orue, Yenca O.; Nava, Bruno; Radicella, Sandro M.; Alazo Cuartas, Katy; Luigi, Ciraolo

2013-04-01

498

Virtual Sensor Web Architecture  

NASA Astrophysics Data System (ADS)

NASA envisions the development of smart sensor webs, intelligent and integrated observation network that harness distributed sensing assets, their associated continuous and complex data sets, and predictive observation processing mechanisms for timely, collaborative hazard mitigation and enhanced science productivity and reliability. This paper presents Virtual Sensor Web Infrastructure for Collaborative Science (VSICS) Architecture for sustained coordination of (numerical and distributed) model-based processing, closed-loop resource allocation, and observation planning. VSICS's key ideas include i) rich descriptions of sensors as services based on semantic markup languages like OWL and SensorML; ii) service-oriented workflow composition and repair for simple and ensemble models; event-driven workflow execution based on event-based and distributed workflow management mechanisms; and iii) development of autonomous model interaction management capabilities providing closed-loop control of collection resources driven by competing targeted observation needs. We present results from initial work on collaborative science processing involving distributed services (COSEC framework) that is being extended to create VSICS.

Bose, P.; Zimdars, A.; Hurlburt, N.; Doug, S.

2006-12-01

499

AGRICOLA Web Gateway  

NSDL National Science Digital Library

The US National Agricultural Library, the largest agricultural library in the world, has a Web gateway to its mammoth AGRICOLA (AGRICultural OnLine Access) database. AGRICOLA "is a machine-readable database of bibliographic records created by the National Agricultural Library and its cooperators. Production of these records in electronic form began in 1970, but the database covers materials dating from the 16th century to the present. The records describe publications and resources encompassing all aspects of agriculture and allied disciplines, including plant and animal sciences, forestry, entomology, soil and water resources, agricultural economics, agricultural engineering, agricultural products, alternative farming practices, and food and nutrition." The Web interface is divided into two sections at this time, an online public access book catalog and a "journal article citation index." The book catalog contains bibliographic records produced since 1970, while the journal section contains records produced since 1985. Searching is available on six variables for each section, and several of the indexes are browseable, for ease of use.

1998-01-01

500

Tele diagnostic by web  

NASA Astrophysics Data System (ADS)

Because of the development of multimedia technologies like Web and Internet, it now becomes possible to think about Tele Medicine and Tele Diagnostic for a distant place where no doctors and no nurses are situated at or are available. And also some kind of intelligence can be added onto them, which makes possible to give certain kind of medical treatment assistance or suggestions for a patient from a computer diagnostic base through the Internetworking. For doing this, here considers about a basic system of "Tele Diagnostic for a remote place" where it dose not have a doctor and a medical assistance. In order to implement the system, JAVA, VRML, HTML, and CORTONA are used as a basic language and a viewer. And also in order to add a kind of intelligence, Augmented Knowledge In Agent (AKIA) by using Back Propagation Neural Networks (BPNN) is used. And by this study, here can introduce the system that has the following basic mechanisms; By inputting physical data like temperature or blood pressure, the system would show a diagnostic assistance by TEXT. And also the bad place of body would be shown graphically if there were any. The system can be put onto Web, so that anybody could have this assistance at any place ubiquitously only if a person has Internetworking access.

Sugiyama, Shigeki

2006-03-01