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1

Solutions for deploying multi-architecture EHRs on a single EHR educational portal.  

PubMed

In this paper technical issues are discussed related to the development and implementation of a remotely accessible portal that allows users to interact with a range of electronic health records (EHRs). The Portal (known as the UVic EHR Educational Portal) was designed to allow for the hosting of a range of types of EHRs, ranging from thick client systems to web-browser-based systems. The portal has been successfully deployed to allow simultaneous access by hundreds of users (i.e., health professional students) in order to work with representative EHRs for educational purposes. The overall architecture is described and issues related to the challenges in allowing for the hosting of systems of divers designs. PMID:19745291

Armstrong, Brian; Kushniruk, Andre; Borycki, Elizabeth

2009-01-01

2

Portals for Web Based Education and Computational Science  

Microsoft Academic Search

We discuss the characteristics of portals defined as web-based interfaces to applications. In particular we focus on portals for either education or computing which we assume will be based on technologies developed for areas such as e-commerce and the large Enterprise Information Portal market. Interoperable portals should be based on interface standards, which are essentially hierarchical frameworks in the Java

Geoffrey C Fox

2000-01-01

3

Teachers' Acceptance and Use of an Educational Portal  

ERIC Educational Resources Information Center

|In this study, teachers' acceptance and use of an educational portal is assessed based on data from two sources: usage data (number of logins, downloads, uploads, reactions and pages viewed) and an online acceptance questionnaire. The usage data is extracted on two occasions from the portal's database: at survey completion (T1) and twenty-two…

Pynoo, Bram; Tondeur, Jo; van Braak, Johan; Duyck, Wouter; Sijnave, Bart; Duyck, Philippe

2012-01-01

4

The virtual space exploration education portal  

NASA Astrophysics Data System (ADS)

New information technologies have evolved from space exploration—3-D visualisation ‘lenses’ and a growing suite of tools that allow access to exploration, analysis and interpretation of often complex information by a range of end users including the public, communicators, and policy makers. These tools have only become viable in the past year or two with the combination of the availability of inexpensive, but powerful, personal computers and widespread use of the Internet. A new study group under Commission 6 has been established, entitled ‘Future Directions of Space Exploration Education’, to build a Virtual Global Space Exploration Education Portal (VGSEEP) to open this revolution to all audiences, not just students. This paper describes the initial stages of VGSEEP. The NASA Learning Technologies suite of ‘lenses’ and tools will be demonstrated: World Wind, a 3-D globe that provides insights into our planet from space and almost down to ground level; the Virtual Field Trip that explores at ground level in 3-D; the Virtual Lab, which allows a range of samples to be examined via a virtual light microscope and/or a Scanning Electron Microscope and What’s the Difference?, which allows users to manipulate information in a multi-graphical interface.

Oliver, C. A.

2007-06-01

5

Supporting the education evidence portal via text mining  

PubMed Central

The UK Education Evidence Portal (eep) provides a single, searchable, point of access to the contents of the websites of 33 organizations relating to education, with the aim of revolutionizing work practices for the education community. Use of the portal alleviates the need to spend time searching multiple resources to find relevant information. However, the combined content of the websites of interest is still very large (over 500?000 documents and growing). This means that searches using the portal can produce very large numbers of hits. As users often have limited time, they would benefit from enhanced methods of performing searches and viewing results, allowing them to drill down to information of interest more efficiently, without having to sift through potentially long lists of irrelevant documents. The Joint Information Systems Committee (JISC)-funded ASSIST project has produced a prototype web interface to demonstrate the applicability of integrating a number of text-mining tools and methods into the eep, to facilitate an enhanced searching, browsing and document-viewing experience. New features include automatic classification of documents according to a taxonomy, automatic clustering of search results according to similar document content, and automatic identification and highlighting of key terms within documents.

Ananiadou, Sophia; Thompson, Paul; Thomas, James; Mu, Tingting; Oliver, Sandy; Rickinson, Mark; Sasaki, Yutaka; Weissenbacher, Davy; McNaught, John

2010-01-01

6

Quantitative Analysis of the Usage of the COSMOS Science Education Portal  

NASA Astrophysics Data System (ADS)

A quantitative method of mapping the web usage of an innovative educational portal is applied to analyze the behaviour of users of the COSMOS Science Education Portal. The COSMOS Portal contains user-generated resources (that are uploaded by its users). It has been designed to support a science teacher’s search, retrieval and access to both, scientific and educational resources. It also aims to introduce in and familiarize teachers with an innovative methodology for designing, expressing and representing educational practices in a commonly understandable way through the use of user-friendly authoring tools that are available through the portal. As a new science education portal that includes user-generated content, the COSMOS Portal encounters the well-known “new product/service challenge”: to convince the users to use its tools, which facilitate quite fast lesson planning and lesson preparation activities. To respond to this challenge, the COSMOS Portal operators implemented a validation process by analyzing the usage data of the portal in a 10 month time-period. The data analyzed comprised: (a) the temporal evolution of the number of contributors and the amount of content uploaded to the COSMOS Portal; (b) the number of portal visitors (categorized as all-visitors, new-visitors, and returning-visitors) and (c) visitor loyalty parameters (such as page-views; pages/visit; average time on site; depth of visit; length of visit). The data is augmented with data associated with the usage context (e.g. the time of day when most of the activities in the portal take place). The quantitative results indicate that the exponential growth of the contributors to the COSMOS Portal is followed by an exponential growth of the uploaded content. Furthermore, the web usage statistics demonstrate significant changes in users’ behaviour during the period under study, with returning visitors using the COSMOS Portal more frequently, mainly for lesson planning and preparation (in the afternoon hours). The findings demonstrate that the new COSMOS users follow the “law of surfing” behaviour, a common pattern of surfing behaviour in portals. However, users return to the COSMOS Portal: returning users comprise more than 50% of all COSMOS visits, stay longer on site and visit more pages. Returning visitors are benchmarked against the “law of surfing” and outperform it substantially. These quantitative results benchmark the web usage of a portal and provide its operators with maps of value-added patterns of the portal’s offering to its users in the science education community.

Sotiriou, Sofoklis; Bogner, Franz X.; Neofotistos, George

2010-11-01

7

Quantitative Analysis of the Usage of the COSMOS Science Education Portal  

NASA Astrophysics Data System (ADS)

A quantitative method of mapping the web usage of an innovative educational portal is applied to analyze the behaviour of users of the COSMOS Science Education Portal. The COSMOS Portal contains user-generated resources (that are uploaded by its users). It has been designed to support a science teacher's search, retrieval and access to both, scientific and educational resources. It also aims to introduce in and familiarize teachers with an innovative methodology for designing, expressing and representing educational practices in a commonly understandable way through the use of user-friendly authoring tools that are available through the portal. As a new science education portal that includes user-generated content, the COSMOS Portal encounters the well-known "new product/service challenge": to convince the users to use its tools, which facilitate quite fast lesson planning and lesson preparation activities. To respond to this challenge, the COSMOS Portal operators implemented a validation process by analyzing the usage data of the portal in a 10 month time-period. The data analyzed comprised: (a) the temporal evolution of the number of contributors and the amount of content uploaded to the COSMOS Portal; (b) the number of portal visitors (categorized as all-visitors, new-visitors, and returning-visitors) and (c) visitor loyalty parameters (such as page-views; pages/visit; average time on site; depth of visit; length of visit). The data is augmented with data associated with the usage context (e.g. the time of day when most of the activities in the portal take place). The quantitative results indicate that the exponential growth of the contributors to the COSMOS Portal is followed by an exponential growth of the uploaded content. Furthermore, the web usage statistics demonstrate significant changes in users' behaviour during the period under study, with returning visitors using the COSMOS Portal more frequently, mainly for lesson planning and preparation (in the afternoon hours). The findings demonstrate that the new COSMOS users follow the "law of surfing" behaviour, a common pattern of surfing behaviour in portals. However, users return to the COSMOS Portal: returning users comprise more than 50% of all COSMOS visits, stay longer on site and visit more pages. Returning visitors are benchmarked against the "law of surfing" and outperform it substantially. These quantitative results benchmark the web usage of a portal and provide its operators with maps of value-added patterns of the portal's offering to its users in the science education community.

Sotiriou, Sofoklis; Bogner, Franz X.; Neofotistos, George

2011-08-01

8

HPB Online: an electronic health education portal in Singapore.  

PubMed

In 2001, the Health Promotion Board (HPB) developed HPB Online, an internet-based health education portal to disseminate health messages. The objective of this article is to describe the structure of HPB Online, review its reach as a tool to deliver health information in Singapore, and discuss the advantages of using the internet to complement traditional media such as the television, newspapers and radio. Since its inception in 2001, the numbers of page-views, monthly visits and repeat visitors have increased markedly. The most popular webpages have consistently been Food Info Search. The average length of visit also showed a gradual increase during the study period, from about 11.0 minutes in January 2002 to 18.5 minutes in December 2004. The key advantage of using the HPB Online is that it allows quick delivery of information to the public and this is ideal for time-sensitive issues. It helps Singaporeans to make better informed decisions to maintain and to improve their health. With its high utilisation, the HPB will continue to use the internet as part of its multichannel marketing strategy to disseminate health information. PMID:16397714

Vijaya, K; Chan, S P; Ho, H P C; Lim, Y Y L; Lim, R

2006-01-01

9

45 CFR 170.302 - General certification criteria for Complete EHRs or EHR Modules.  

Code of Federal Regulations, 2010 CFR

...TECHNOLOGY Certification Criteria for Health Information Technology...302 General certification criteria for Complete EHRs or EHR Modules...following general certification criteria for Complete EHRs or EHR...information during an emergency. (q) Automatic log-off....

2010-10-01

10

An Evaluation of Teachers' Perceptions of a State Developed Educational Portal  

ERIC Educational Resources Information Center

The purpose of this study was to investigate teachers' perceptions use of a state developed educational portal. The research evaluated the differences in the quality, usefulness, and relevance of learning objects found on the website based on teachers' gender and grade level they taught. Grade level taught referred to those grades that are the…

Caraccio, Beth Katz

2009-01-01

11

Archetype-based conversion of EHR content models: pilot experience with a regional EHR system  

Microsoft Academic Search

BACKGROUND: Exchange of Electronic Health Record (EHR) data between systems from different suppliers is a major challenge. EHR communication based on archetype methodology has been developed by openEHR and CEN\\/ISO. The experience of using archetypes in deployed EHR systems is quite limited today. Currently deployed EHR systems with large user bases have their own proprietary way of representing clinical content

Rong Chen; Gunnar O Klein; Erik Sundvall; Daniel Karlsson; Hans Åhlfeldt

2009-01-01

12

Reducing clinical costs with an EHR.  

PubMed

Steps that hospitals should take to ensure they are gaining optimal value from their electronic health record (EHR) systems include: Creating a value framework for EHR implementation a value framework or EHR implementation. Creating and build executive understanding of the framework. Quantifying each of the expected benefits of EHR implementation. Creating a cross-functional executive team to lead investments in performance management related to the EHR system. Aligning incentives through a formal physician engagement strategy. PMID:20922906

Thompson, Doug; Velasco, Ferdinand; Classen, David; Raddemann, Robert J

2010-10-01

13

Advanced proficiency EHR training: effect on physicians' EHR efficiency, EHR satisfaction and job satisfaction.  

PubMed

The best way to train clinicians to optimize their use of the Electronic Health Record (EHR) remains unclear. Approaches range from web-based training, class-room training, EHR functionality training, case-based training, role-based training, process-based training, mock-clinic training and "on the job" training. Similarly, the optimal timing of training remains unclear--whether to engage in extensive pre go-live training vs. minimal pre go-live training followed by more extensive post go-live training. In addition, the effectiveness of non-clinician trainers, clinician trainers, and peer-trainers, remains unclearly defined. This paper describes a program in which relatively experienced clinician users of an EHR underwent an intensive 3-day Peer-Led EHR advanced proficiency training, and the results of that training based on participant surveys. It highlights the effectiveness of Peer-Led Proficiency Training of existing experienced clinician EHR users in improving self-reported efficiency and satisfaction with an EHR and improvements in perceived work-life balance and job satisfaction. PMID:23304282

Dastagir, M Tariq; Chin, Homer L; McNamara, Michael; Poteraj, Kathy; Battaglini, Sarah; Alstot, Lauren

2012-11-03

14

Service quality of Early Childhood Education web portals in Finnish municipalities  

NASA Astrophysics Data System (ADS)

Increasing number of governmental organizations have transformed material on their web sites as a way of providing users with information about their products and services. In this paper, we apply Yang et al (2005) instrument for analyzing municipal early childhood education (ECE) web sites in Finland. The objective of the study was to find out the quality of ECE web portals as well as to give hints to improve their value from users' point of view. In general the five dimensions, usability, usefulness of content, adequacy of information, accessibility, and interaction, of the Yang et al model seems to be applicable also in the early childhood education environment.

Koskivaara, Eija; Pihlaja, Päivi

15

Shared Decision Making in Education Governance Using Business Portals  

ERIC Educational Resources Information Center

|The purpose of this study was to address a high-volume problem for the Delaware Department of Education Office of Professional Accountability (OPA). This problem was addressed by sharing the certification decision with qualified personnel located at each of the four teacher preparation programs located in Delaware at Delaware State University…

Peoples, Adrian L.

2009-01-01

16

The EHR magnet system conceptual design  

Microsoft Academic Search

The results of the EHR (Experimental Hybrid Reactor) magnet conceptual design are presented. The EHR magnet systems include the toroidal field (TF) magnet system, the poloidal field (PF) magnet system, and the in-vessel plasma active control coils. The TF and PF magnet systems are superconductive to satisfy the steady state operation of the EHR. The plasma active control coils are

Zengsi Guo; Weigue Wu; Wunian Xu; Yue Chen

1991-01-01

17

Archetype-based conversion of EHR content models: pilot experience with a regional EHR system  

PubMed Central

Background Exchange of Electronic Health Record (EHR) data between systems from different suppliers is a major challenge. EHR communication based on archetype methodology has been developed by openEHR and CEN/ISO. The experience of using archetypes in deployed EHR systems is quite limited today. Currently deployed EHR systems with large user bases have their own proprietary way of representing clinical content using various models. This study was designed to investigate the feasibility of representing EHR content models from a regional EHR system as openEHR archetypes and inversely to convert archetypes to the proprietary format. Methods The openEHR EHR Reference Model (RM) and Archetype Model (AM) specifications were used. The template model of the Cambio COSMIC, a regional EHR product from Sweden, was analyzed and compared to the openEHR RM and AM. This study was focused on the convertibility of the EHR semantic models. A semantic mapping between the openEHR RM/AM and the COSMIC template model was produced and used as the basis for developing prototype software that performs automated bi-directional conversion between openEHR archetypes and COSMIC templates. Results Automated bi-directional conversion between openEHR archetype format and COSMIC template format has been achieved. Several archetypes from the openEHR Clinical Knowledge Repository have been imported into COSMIC, preserving most of the structural and terminology related constraints. COSMIC templates from a large regional installation were successfully converted into the openEHR archetype format. The conversion from the COSMIC templates into archetype format preserves nearly all structural and semantic definitions of the original content models. A strategy of gradually adding archetype support to legacy EHR systems was formulated in order to allow sharing of clinical content models defined using different formats. Conclusion The openEHR RM and AM are expressive enough to represent the existing clinical content models from the template based EHR system tested and legacy content models can automatically be converted to archetype format for sharing of knowledge. With some limitations, internationally available archetypes could be converted to the legacy EHR models. Archetype support can be added to legacy EHR systems in an incremental way allowing a migration path to interoperability based on standards.

2009-01-01

18

Quality requirements for EHR archetypes.  

PubMed

The realisation of semantic interoperability, in which any EHR data may be communicated between heterogeneous systems and fully understood by computers as well as people on receipt, is a challenging goal. Despite the use of standardised generic models for the EHR and standard terminology systems, too much optionality and variability exists in how particular clinical entries may be represented. Clinical archetypes provide a means of defining how generic models should be shaped and bound to terminology for specific kinds of clinical data. However, these will only contribute to semantic interoperability if libraries of archetypes can be built up consistently. This requires the establishment of design principles, editorial and governance policies, and further research to develop ways for archetype authors to structure clinical data and to use terminology consistently. Drawing on several years of work within communities of practice developing archetypes and implementing systems from them, this paper presents quality requirements for the development of archetypes. Clinical engagement on a wide scale is also needed to help grow libraries of good quality archetypes that can be certified. Vendor and eHealth programme engagement is needed to validate such archetypes and achieve safe, meaningful exchange of EHR data between systems. PMID:22874150

Kalra, Dipak; Tapuria, Archana; Austin, Tony; De Moor, Georges

2012-01-01

19

Payer mix and EHR adoption in hospitals.  

PubMed

Payers are known to influence the adoption of health information technology (HIT) among hospitals. However, previous studies examining the relationship between payer mix and HIT have not focused specifically on electronic health record systems (EHRs). Using data from the Nationwide Inpatient Sample and the American Hospital Association Annual Survey, we examine how Medicare, Medicaid, commercial insurance, and managed care caseloads are associated with EHR adoption in hospitals. Overall, we found a weak relationship between payer mix and EHR adoption. Medicare and, separately, Medicaid volumes were not associated with EHR adoption. Furthermore, commercial insurance volume was not associated with EHR adoption; however, a hospital located in the third quartile of managed care caseloads had a decreased likelihood of EHR adoption. We did not find empirical evidence to support the hypothesis that payer generosity and other indirect mechanisms influence EHR adoption in hospitals. The direct incentives embedded in the Health Information Technology for Economic and Clinical Health Act may have a positive influence on EHR adoption--especially for hospitals with high Medicare and/or Medicaid caseloads. However, it is still uncertain whether the available incentives will offset the barriers many hospitals face in achieving meaningful use of EHRs. PMID:23297609

Shin, Dong Yeong; Menachemi, Nir; Diana, Mark; Kazley, Abby Swanson; Ford, Eric W

20

MedlinePlus Connect: Linking Patient Portals and Electronic Health Records to Health Information  

MedlinePLUS

... health IT providers to link patient portals and electronic health record (EHR) systems to MedlinePlus, an authoritative ... information. See examples of health care organizations and electronic health records systems using MedlinePlus Connect . Quick Facts ...

21

WormClassroom.org: An Inquiry-Rich Educational Web Portal for Research Resources of "Caenorhabditis elegans"  

ERIC Educational Resources Information Center

The utilization of biology research resources, coupled with a "learning by inquiry" approach, has great potential to aid students in gaining an understanding of fundamental biological principles. To help realize this potential, we have developed a Web portal for undergraduate biology education, WormClassroom.org, based on current research…

Lu, Fong-Mei; Eliceiri, Kevin W.; Stewart, James; White, John G.

2007-01-01

22

WormClassroom.org: An Inquiry-Rich Educational Web Portal for Research Resources of "Caenorhabditis elegans"  

ERIC Educational Resources Information Center

|The utilization of biology research resources, coupled with a "learning by inquiry" approach, has great potential to aid students in gaining an understanding of fundamental biological principles. To help realize this potential, we have developed a Web portal for undergraduate biology education, WormClassroom.org, based on current research…

Lu, Fong-Mei; Eliceiri, Kevin W.; Stewart, James; White, John G.

2007-01-01

23

MySLU: A WEB Portal Project Promoting ICT and WEB Based Collaboration in Higher Education Philippines Experience  

Microsoft Academic Search

Recent research in educational technology has identified several factors to determine the efficiency exhibited by students in acquiring new skills and knowledge. This research points out that the adoption of eLearning can greatly improve the quoted efficiency when compared to traditional approaches. (1) One way of reaching this goal is to develop an online web portal presenting the institution's learning

Cecilia A. Mercado; Gerry Paul; C. Genove

24

Physics Portal  

NSDL National Science Digital Library

As part of the Journal Nature's Web site, the Physics Portal, is an online resource providing physicists easy access to timely, relevant research. After the free registration users can view current and past articles, arranged by subject including everything from astro to quantum physics. The site also contains news articles, meeting and job information, a links page, and more, making it a must-stop for any researcher or educator in the field.

2002-01-01

25

The implementation of IHE ATNA for the EHR system  

Microsoft Academic Search

? Abstract—The health record in the Electronic Health Record (EHR) system is more sensitive than demographic. It raises the important issue for the EHR requirement in privacy, security, audit trail, patient access, and archiving and data retention. The studies about the EHR system security are deficient. The aim of this study is to build a security environment for the EHR

Sheng-Chi Tseng; Der-Ming Liou

2009-01-01

26

Avoiding fraud risks associated with EHRs.  

PubMed

Fraud associated with electronic health records (EHRs) generally falls into two categories: inappropriate billing by healthcare providers and inappropriate access by a system's users. A provider's EHR system requires controls to be of any significant help in detecting such fraudulent activity, or in gathering transactional evidence should such activity be identified. To protect against potential EHR-related healthcare fraud, providers should follow the recommendations established in 2007 by RTI International for the Office of the National Coordinator for Health Information Technology of the U.S. Department of Health and Human Services. PMID:20608420

Helton, Jeffrey R

2010-07-01

27

Developing Shared EHR Infrastructure in Wisconsin.  

National Technical Information Service (NTIS)

The purpose of our project was to assemble multiple healthcare providers within a 180-mile radius of Madison, Wisconsin, and plan for the implementation of a common infrastructure for an integrated electronic health record (EHR) that would enhance access ...

B. Slater C. Alvarado J. Franckowiak K. Canning K. Jacobs L. Clifford S. Casperson T. Size

2005-01-01

28

Application of EHR in Health Care  

Microsoft Academic Search

An EHR is a longitudinal collection of electronic health information about individual patients or populations, and is capable of being shared across different health care settings, by being embedded in network-connected enterprise-wide information system. An important consideration in the process of developing electronic health records is to plan for the long-term preservation and storage of these records. Most commercial EHR

Wan Yina

2010-01-01

29

Transitioning from a Legacy EHR to a Commercial, Vendor-supplied, EHR  

PubMed Central

Objective Describe the planning, decisions, and implementation results experienced during the large-scale transition from one EHR to another throughout a large academic health system, which occurred simultaneously throughout both in-patient and all ambulatory settings Methods Review of internal decision-making documents, interviews with key participants, and data from conversion software Results Over 7,000 unique users caring for a population of more than 1.2 million patients in both inpatient and outpatient venues and distributed across two states were successfully transitioned to a new EHR simultaneously. Challenges in data conversion were encountered resulting in more work for end-users than desired or anticipated. Users continued to access older information (principally schedules) in the legacy EHR one year later Conclusion Data conversion from one EHR to another can be unsuccessful due to differences in how EHR’s structure data obtained from underlying feeder applications or databases. Abstraction of only the pertinent clinical content is difficult in the context of transitioning to a new EHR. Clinicians require facile access to legacy content that can be achieved by implanting CCOW compliant solutions.

Gettinger, A.; Csatari, A.

2012-01-01

30

Developing a Web 2.0 telemedical education system: the AJAX-Cocoon portal.  

PubMed

Web 2.0 technologies such as wikis, podcasts/vodcasting, blogs and semantic portals could be quite effective tools in e-learning for health professionals. If effectively deployed, such tools can offer a way to enhance students', clinicians' and patients' learning experiences, and deepens levels of learners' engagement and collaboration within medical learning environments. However, Web 2.0 requires simplicity of use as well as integration with modern web technologies. This article presents a Web 2.0 telemedical portal, which provides a social community-learning paradigm from the desk of the physician, the student, the hospital administrator, or the insurer. The presented portal utilises RESTful web services and techniques like content syndication, mushups and Asynchronous JavaScript API and XML (AJAX). The designed portal is based on the Apache Cocoon RESTful framework for sharing Digital Imaging and Communications in Medicine (DICOM) medical case studies. Central to this article is the integration between Cocoon and AJAX. The proposed AJAX-Cocoon portal utilises a JSP portlet architecture, which manages the interaction dynamics and overcomes the shortcomings of the JSR 168 and WSRP 1.0 standards. PMID:18583294

Mohammed, S; Orabi, A; Fiaidhi, J; Orabi, M

2008-01-01

31

WormClassroom.org: An Inquiry-rich Educational Web Portal for Research Resources of Caenorhabditis elegans  

PubMed Central

The utilization of biology research resources, coupled with a “learning by inquiry” approach, has great potential to aid students in gaining an understanding of fundamental biological principles. To help realize this potential, we have developed a Web portal for undergraduate biology education, WormClassroom.org, based on current research resources of a model research organism, Caenorhabditis elegans. This portal is intended to serve as a resource gateway for students to learn biological concepts using C. elegans research material. The driving forces behind the WormClassroom website were the strengths of C. elegans as a teaching organism, getting researchers and educators to work together to develop instructional materials, and the 3 P's (problem posing, problem solving, and peer persuasion) approach for inquiry learning. Iterative assessment is an important aspect of the WormClassroom site development because it not only ensures that content is up-to-date and accurate, but also verifies that it does, in fact, aid student learning. A primary assessment was performed to refine the WormClassroom website utilizing undergraduate biology students and nonstudent experts such as C. elegans researchers; results and comments were used for site improvement. We are actively encouraging continued resource contributions from the C. elegans research and education community for the further development of WormClassroom.

Lu, Fong-Mei; Stewart, James; White, John G.

2007-01-01

32

Development of an EHR System for Sharing - A Semantic Perspective  

Microsoft Academic Search

Building up Electronic Health Record (EHR) syste ms is considered a promising approach to improve health care quality in China. In order to meet the challenges of EHR semantic interoperability, we present a HL7 Clinical Document Architecture (CDA) R2 based EHR system prototype developed for Guangdong Hospital of Traditional Chinese Medicine (GDHTCM). In particular, we demonstrate how semantic technologies are

Haifeng Liu; Xueqiao Hou; Gang Hu; Jing Li; Yu Qi Ding

2009-01-01

33

The Design of Community EHR System Based on PDA  

Microsoft Academic Search

With the development of community healthcare, the electronic health record (EHR) has extracted more and more attention in China. Though most of the communities in megalopolis have installed the EHR system, the lack of mobility limits the further development of EHR. Because the personal digital assistant (PDA) has higher mobility and can conveniently exchange the data with the database, it

Tianlong Shen; Zhuangzhi Yan

2007-01-01

34

Open Portal Schools: The Real Impact of Computer-Based Education.  

ERIC Educational Resources Information Center

|The model for the school of the future that is suggested in this paper is based on the imaginative application of computer and information technologies. Four major functions are identified for this imaginary school: (1) administration--academic recordkeeping for all citizens; (2) the Open Portal Local Node--teleconference-based classes available…

Loop, Liza

35

Exploring the intention to use a clinical imaging portal for enhancing healthcare education.  

PubMed

Clinical imaging plays an integral role in disease diagnosis and patient care. It is good for healthcare professionals such as nurses to acquire skills and knowledge in radiological examination requests and image interpretation, since this kind of role extension provides more personalized patient care and streamlines the service. This study described the development of a clinical imaging portal to facilitate independent learning in image interpretation and explored factors affecting intentions to use the portal based on the technology acceptance model (TAM), with the computer self-efficacy construct as an external variable. One hundred and twenty-eight nursing students participated in this survey study and the results indicated that the portal was perceived as easy to use, useful and satisfying. Structural equation modeling (SEM) showed that attitude toward using the portal exhibited the strongest total effect on behavioral intention to use, followed by perceived ease of use and computer self-efficacy. Although some TAM researchers have suggested that the inclusion of attitude is not meaningful, we argue that attitude should continue to be used in subsequent research. PMID:22336478

Chow, Meyrick; Chan, Lawrence; Lo, Bill; Chu, Wai-Pong; Chan, Tao; Lai, Yau-Ming

2012-02-13

36

Using the ResearchEHR platform to facilitate the practical application of the EHR standards.  

PubMed

Possibly the most important requirement to support co-operative work among health professionals and institutions is the ability of sharing EHRs in a meaningful way, and it is widely acknowledged that standardization of data and concepts is a prerequisite to achieve semantic interoperability in any domain. Different international organizations are working on the definition of EHR architectures but the lack of tools that implement them hinders their broad adoption. In this paper we present ResearchEHR, a software platform whose objective is to facilitate the practical application of EHR standards as a way of reaching the desired semantic interoperability. This platform is not only suitable for developing new systems but also for increasing the standardization of existing ones. The work reported here describes how the platform allows for the edition, validation, and search of archetypes, converts legacy data into normalized, archetypes extracts, is able to generate applications from archetypes and finally, transforms archetypes and data extracts into other EHR standards. We also include in this paper how ResearchEHR has made possible the application of the CEN/ISO 13606 standard in a real environment and the lessons learnt with this experience. PMID:22142945

Maldonado, José Alberto; Costa, Catalina Martínez; Moner, David; Menárguez-Tortosa, Marcos; Boscá, Diego; Miñarro Giménez, José Antonio; Fernández-Breis, Jesualdo Tomás; Robles, Montserrat

2011-11-28

37

A reference architecture for integrated EHR in Colombia.  

PubMed

The implementation of national EHR infrastructures has to start by a detailed definition of the overall structure and behavior of the EHR system (system architecture). Architectures have to be open, scalable, flexible, user accepted and user friendly, trustworthy, based on standards including terminologies and ontologies. The GCM provides an architectural framework created with the purpose of analyzing any kind of system, including EHR system´s architectures. The objective of this paper is to propose a reference architecture for the implementation of an integrated EHR in Colombia, based on the current state of system´s architectural models, and EHR standards. The proposed EHR architecture defines a set of services (elements) and their interfaces, to support the exchange of clinical documents, offering an open, scalable, flexible and semantically interoperable infrastructure. The architecture was tested in a pilot tele-consultation project in Colombia, where dental EHR are exchanged. PMID:21893762

de la Cruz, Edgar; Lopez, Diego M; Uribe, Gustavo; Gonzalez, Carolina; Blobel, Bernd

2011-01-01

38

Portal Hypertension  

PubMed Central

Portal hypertension is an increase in pressure in the portal vein and its tributaries. It is defined as a portal pressure gradient (the difference in pressure between the portal vein and the hepatic veins) greater than 5 mm Hg. Although this gradient defines portal hypertension, a gradient of 10 mm Hg or greater defines clinically significant portal hypertension, because this pressure gradient predicts the development of varices,1 decompensation of cirrhosis,2,3 and hepatocellular carcinoma.4 The most direct consequence of portal hypertension is the development of gastroesophageal varices that may rupture and lead to the development of variceal hemorrhage. This article reviews the pathophysiologic bases of the different pharmacologic treatments for portal hypertension in patients with cirrhosis and places them in the context of the natural history of varices and variceal hemorrhage.

Minano, Cecilia; Garcia-Tsao, Guadalupe

2010-01-01

39

Portal Hypertension  

Microsoft Academic Search

The term portal hypertension or, more strictly, portal venous hypertension, refers explicitly to a pathologic elevation of pressure in the veins that carry blood from the splanchnic organs (including\\u000a the spleen) to the liver. Implicit in the working definition of portal hypertension is the necessary condition that the rise\\u000a in portal pressure is not simply a consequence of an increase

Adrian Reuben; Roberto J. Groszmann

40

Integration of DICOM and openEHR standards  

NASA Astrophysics Data System (ADS)

The standard format for medical imaging storage and transmission is DICOM. openEHR is an open standard specification in health informatics that describes the management and storage, retrieval and exchange of health data in electronic health records. Considering that the integration of DICOM and openEHR is beneficial to information sharing, on the basis of XML-based DICOM format, we developed a method of creating a DICOM Imaging Archetype in openEHR to enable the integration of DICOM and openEHR. Each DICOM file contains abundant imaging information. However, because reading a DICOM involves looking up the DICOM Data Dictionary, the readability of a DICOM file has been limited. openEHR has innovatively adopted two level modeling method, making clinical information divided into lower level, the information model, and upper level, archetypes and templates. But one critical challenge posed to the development of openEHR is the information sharing problem, especially in imaging information sharing. For example, some important imaging information cannot be displayed in an openEHR file. In this paper, to enhance the readability of a DICOM file and semantic interoperability of an openEHR file, we developed a method of mapping a DICOM file to an openEHR file by adopting the form of archetype defined in openEHR. Because an archetype has a tree structure, after mapping a DICOM file to an openEHR file, the converted information is structuralized in conformance with openEHR format. This method enables the integration of DICOM and openEHR and data exchange without losing imaging information between two standards.

Wang, Ying; Yao, Zhihong; Liu, Lei

2011-03-01

41

Carrots and sticks for EHR implementation.  

PubMed

Questions providers should consider in determining whether to meet standards for meaningful use of EHR technology in time to receive incentive funds and avoid monetary sanctions include: Is the incentive meaningful? Is it feasible to meet the standards for demonstrating meaningful use in time to qualify for the incentive? Is the incentive real? Is the "adjustment" sufficiently motivating? Is it better to go for the incentive or simply attempt to avoid the adjustment? PMID:20178241

Amatayakul, Margret

2010-02-01

42

78 FR 61400 - Advisory Committee for Education and Human Resources; Notice of Meeting  

Federal Register 2010, 2011, 2012, 2013

...mathematics (STEM) education and human resources programming. Agenda November...Assistant Director for Education and Human Resources (EHR) Brief updates on EHR...2013. Susanne Bolton, Committee Management Officer. [FR Doc....

2013-10-03

43

Recommendations for Syndromic Surveillance Using Inpatient and Ambulatory EHR Data  

PubMed Central

Objective To develop national Stage 2 Meaningful Use (MUse) recommendations for syndromic surveillance using hospital inpatient and ambulatory clinical care electronic health record (EHR) data. Introduction MUse will make EHR data increasingly available for public health surveillance. For Stage 2, the Centers for Medicare & Medicaid Services (CMS) regulations will require hospitals and offer an option for eligible professionals to provide electronic syndromic surveillance data to public health. Together, these data can strengthen public health surveillance capabilities and population health outcomes (Figure 1). To facilitate the adoption and effective use of these data to advance population health, public health priorities and system capabilities must shape standards for data exchange. Input from all stakeholders is critical to ensure the feasibility, practicality, and, hence, adoption of any recommendations and data use guidelines. Methods ISDS, in collaboration with the Division of Informatics Solutions and Operations at the Centers for Disease Control and Prevention (CDC), and HLN Consulting, convened a multi-stakeholder Work-group of clinicians, technologists, epidemiologists, and public health officials with expertise in syndromic surveillance. Recommended MUse guidelines were developed by performing an environmental scan of current practice and by using an iterative, expert and community input-driven process. The Workgroup developed initial guidelines and then solicited and received feedback from the stakeholder community via interview, e-mail, and structured surveys. Stakeholder feedback was analyzed using quantitative and qualitative methods and used to revise the recommendations. Results The MUse Workgroup defined electronic syndromic surveillance (ESS) characteristics. Specifically, data are characterized by their timeliness, sensitivity rather than specificity, population focus, limited personally identifiable information, and inclusion of all patient encounters within a specific healthcare setting (e.g., emergency department, inpatient, outpatient). Based on stakeholder input (n=125) and Workgroup expertise, the guidelines identify priority syndromic surveillance uses that can assist with: Monitoring population health;Informing public health services; andInforming interventions, health education, and policy by characterizing the burden of chronic disease and health disparities. Similarly, the Workgroup identified data elements to support these uses in the hospital inpatient setting and possibly in the ambulatory care setting. They were aligned to previously identified emergency department and urgent care center data elements and Stage 1–2 clinical MUse objectives. Core data elements (required for certification) cover treating facility; patient demographics; subjective and objective clinical findings, including chief complaint, body mass index, smoking history, diagnoses; and outcomes. Other data elements were designated as extended (not required for certification) or future (for future consideration). The data elements and their specifications are subject to change based on applicable state and local laws and practices. Based on their findings and recommended guidelines detailed in the report, the Workgroup also identified community activities and additional investments that would best support public health agencies in using EHR technology with syndromic surveillance methodologies. Conclusions The widespread adoption of EHRs, catalyzed by MUse, has the potential to improve population health. By identifying and describing potential ESS uses of new sources of EHR data and associated data elements with the greatest utility for public health, the recommendations set forth by the ISDS MUse Workgroup will serve to facilitate the adoption of MUse policy by both healthcare and public health agencies.

Johnson, Geraldine; Ishikawa, Charles; Zwickl, Rebecca; Minami, Maiko; Kass-Hout, Taha; Streichert, Laura

2013-01-01

44

Protection of electronic health records (EHRs) in cloud.  

PubMed

EHR technology has come into widespread use and has attracted attention in healthcare institutions as well as in research. Cloud services are used to build efficient EHR systems and obtain the greatest benefits of EHR implementation. Many issues relating to building an ideal EHR system in the cloud, especially the tradeoff between flexibility and security, have recently surfaced. The privacy of patient records in cloud platforms is still a point of contention. In this research, we are going to improve the management of access control by restricting participants' access through the use of distinct encrypted parameters for each participant in the cloud-based database. Also, we implement and improve an existing secure index search algorithm to enhance the efficiency of information control and flow through a cloud-based EHR system. At the final stage, we contribute to the design of reliable, flexible and secure access control, enabling quick access to EHR information. PMID:24110656

Alabdulatif, Abdulatif; Khalil, Ibrahim; Mai, Vu

2013-07-01

45

Comparing the Certification Criteria for CCHIT-Certified Ambulatory EHR with the SNUBH's EHR Functionalities  

PubMed Central

Objectives This study aims to investigate the suitability of electronic health record (EHR) systems in Korea for global certification and to propose functions for future global systems by comparing and analyzing the certification criteria for Certification Commission for Health Information Technology (CCHIT) Certified Ambulatory EHR with BESTCare, which is the EHR system at Seoul National University Bundang hospital. Methods Domain expert groups were formed to analyze the inclusion of BESTCare functions and the types of differences for each of the CCHIT Certified 2011 Ambulatory EHR Certification Criteria. The types of differences were divided into differences in functions (F), differences in business processes (B), and differences in government policies (P). Results Generally, the criteria that showed differences in functions pertained to the connection between the diagnosis/problem list and order, the alert and warning functions for medication-diagnosis interactions, and the reminder/instruction/notification messages related to the patient's immunization status; these absent functions were enhanced clinical decision support system (CDSS) functions related to patient safety and healthcare quality. Differences in government policies were found in the pharmacy's electronic prescription functions, while differences in business processes were found in the functions constrained by the local workflow or internal policy, which require some customization. Conclusions Functions that differed between the CCHIT certification criteria and the BESTCare system in this study should be considered when developing a global EHR system. Such a system will need to be easily customizable to adapt to various government policies and local business processes. These functions should be considered when developing a global EHR system certified by CCHIT in the future.

Heo, Eun Young; Hwang, Hee; Kim, Eun Hye; Cho, Eun Young; Lee, Kee Hyuck; Kim, Tae Hun; Kim, Ki Dong; Baek, Rong Min

2012-01-01

46

A Middleware Approach to Integrate Referent Tracking in EHR Systems.  

PubMed Central

The purpose of a Referent Tracking System (RTS) is to manage the representation of particulars in a database and to share this information with Electronic Health Record (EHR) systems. We describe how an implementation of such a RTS can be integrated in an EHR system using middleware technology based on web services. We describe the functional and technical requirements of such an approach and document our experiences with MedtuityEMR, an EHR system that stores patient data in XML.

MANZOOR, Shahid; CEUSTERS, Werner M.; RUDNICKI, Ron

2007-01-01

47

77 FR 8217 - Evaluating the Usability of Electronic Health Record (EHR) Systems  

Federal Register 2010, 2011, 2012, 2013

...EHRs in particular, and performance-oriented user interface design guidelines for EHRs. Manufacturers interested in...NIST in research to develop performance-oriented user interface design guidelines for EHRs, and a framework for...

2012-02-14

48

Transitioning between ambulatory EHRs: a study of practitioners' perspectives  

PubMed Central

Objective To evaluate practitioners' expectations of, and satisfaction with, older and newer electronic health records (EHRs) after a transition. Material and methods Pre- and post-transition survey administered at six academic-affiliated ambulatory care practices from 2006 to 2008. Four practices transitioned to one commercial EHR and two practices to another. We compared respondents' expectations of, and satisfaction with, the newer EHR. Results 523 subjects were eligible: 217 were available before transition and 306 after transition. 162 pre-transition and 197 post-transition responses were received, yielding 75% and 64% response rates, respectively. Practitioners were more satisfied with the newer EHRs (64%) compared with the older (56%) (p=0.15) and a small majority (58%) were satisfied with the transition. Practitioners' satisfaction with the older EHRs for completing clinical tasks was high. The newer EHRs exceeded practitioner expectations regarding remote access (61% vs 74%; p=0.03). However, the newer EHRs did not meet practitioners' expectations regarding their ability to perform clinical tasks, or more globally, improve medication safety (81% vs 61%; p<0.001), efficiency (70% vs 44%; p<0.001), and quality of care (77% vs 67%; p=0.04). Discussion Most practitioners had favorable opinions about EHRs and reported overall improved satisfaction with the newer EHRs. However, practitioners' high expectations of the newer EHRs were often unmet regarding facilitation of specific clinical tasks or for improving quality, safety, and efficiency. Conclusion To ensure practitioners' expectations, for instance regarding improvements in medication safety, are met, vendors should develop and implement refinements in their software as practices upgrade to newer, certified EHRs.

Zandieh, Stephanie O; Abramson, Erika L; Pfoh, Elizabeth R; Yoon-Flannery, Kay; Edwards, Alison

2011-01-01

49

Community Surface Dynamics Modeling System: images portal  

NSDL National Science Digital Library

The Community Surface Dynamics Modeling System promotes quantitative Earth Science education with models through its images portal, which has collections of images of terrestrial, coastal, and marine environments.

System, Community S.

50

Science Portal  

NSDL National Science Digital Library

The Australian governmental Web site, Science Portal delivers science information and services to industry, investors, and the research community. The site allows visitors to find relevant links in their field from all of Australia's research and research-related organization Web sites. The portal can be searched or browsed by various research topics including directories and databases, policy, research grants, and more.

51

Same organization, same electronic health records (EHRs) system, different use: exploring the linkage between practice member communication patterns and EHR use patterns in an ambulatory care setting  

PubMed Central

Objective Despite efforts made by ambulatory care organizations to standardize the use of electronic health records (EHRs), practices often incorporate these systems into their work differently from each other. One potential factor contributing to these differences is within-practice communication patterns. The authors explore the linkage between within-practice communication patterns and practice-level EHR use patterns. Design Qualitative study of six practices operating within the same multi-specialty ambulatory care organization using the same EHR system. Semistructured interviews and direct observation were conducted with all physicians, nurses, medical assistants, practice managers, and non-clinical staff from each practice. Measurements An existing model of practice relationships was used to analyze communication patterns within the practices. Practice-level EHR use was defined and analyzed as the ways in which a practice uses an EHR as a collective or a group—including the degree of feature use, level of EHR-enabled communication, and frequency that EHR use changes in a practice. Interview and observation data were analyzed for themes. Based on these themes, within-practice communication patterns were categorized as fragmented or cohesive, and practice-level EHR use patterns were categorized as heterogeneous or homogeneous. Practices where EHR use was uniformly high across all users were further categorized as having standardized EHR use. Communication patterns and EHR use patterns were compared across the six practices. Results Within-practice communication patterns were associated with practice-level EHR use patterns. In practices where communication patterns were fragmented, EHR use was heterogeneous. In practices where communication patterns were cohesive, EHR use was homogeneous. Additional analysis revealed that practices that had achieved standardized EHR use (uniformly high EHR use across all users) exhibited high levels of mindfulness and respectful interaction, whereas practices that were furthest from achieving standardized EHR use exhibited low levels of mindfulness and respectful interaction. Conclusion Within-practice communication patterns provide a unique perspective for exploring the issue of standardization in EHR use. A major fallacy of setting homogeneous EHR use as the goal for practice-level EHR use is that practices with uniformly low EHR use could be considered successful. Achieving uniformly high EHR use across all users in a practice is more consistent with the goals of current EHR adoption and use efforts. It was found that some communication patterns among practice members may enable more standardized EHR use than others. Understanding the linkage between communication patterns and EHR use can inform understanding of the human element in EHR use and may provide key lessons for the implementation of EHRs and other health information technologies.

Leykum, Luci K; McDaniel, Reuben R

2011-01-01

52

Grid Portals for Bioinformatics  

Microsoft Academic Search

The explosive growth of biological and biomedical research requires a new set of software tools and a computational environment that includes high performance computing and large- scale data management. These software environments need to be easy-to-use and scalable to support the diverse requirements of educators and researchers. This paper describes the design philosophy and architecture of a bioinformatics portal that

Lavanya Ramakrishnan; Mark S. C. Reed; Jeffrey L. Tilson; Daniel A. Reed

53

Viewpoint Paper: Formative Evaluation: A Critical Component in EHR Implementation  

Microsoft Academic Search

This Viewpoint paper has grown out of a presentation at the American College of Medical Informatics 2007 Winter Symposium, the resulting discussion, and several activities that have coalesced around an issue that most informaticians accept as true but is not commonly considered during the implementation of Electronic Health Records (EHR) outside of academia or research institutions. Successful EHR implementation is

Julie J. McGowan; Caitlin M. Cusack; Eric G. Poon

2008-01-01

54

Organization's quality maturity as a vehicle for EHR success.  

PubMed

In health care industry, EHR has been advocated to improve care quality. The journey toward the development and adaptation of EHR should be holistic and integrate all the EHR's building blocks-health record management, business process improvement (BPI), collaboration and innovation, change management, user governance, etc.-that are intertwined together as like the links of a chain to improve quality of health care services. These cornerstones that shares common features with quality principles will pave the way for implementing EHR. To go along with quality features and take advantage of quality principles namely "quality maturity" builds a solid foundation for adaptation of EHR. Therefore, the recent theories of EHR success go far beyond technical rationales and focus on organizational and managerial factors in quality improvement. The milestone of quality concept in information system success is revealed in Delone and Mclean's model which launches system quality, information quality, service quality, as distinct elements of the IS success. EHR is a means to an end -to improve quality within enterprises- based on quality approaches. In this regards, more research should be conducted to investigate the relationship between of organization's quality maturity and EHR development success. PMID:20878212

Meidani, Zahra; Sadoughi, Farhnaz; Maleki, Mohammad Reza; Tofighi, Shahram; Marani, Ahmad Barati

2010-09-28

55

A Middleware Approach to Integrate Referent Tracking in EHR Systems  

Microsoft Academic Search

The purpose of a Referent Tracking System (RTS) is to manage the representation of particulars in a database and to share this information with Electronic Health Record (EHR) systems. We describe how an implementation of such a RTS can be integrated in an EHR system using middleware technology based on web services. We describe the functional and technical requirements of

Shahid MANZOOR; Werner M. CEUSTERS; Ron RUDNICKI

56

A Qualitative Analysis of EHR Clinical Document Synthesis by Clinicians  

PubMed Central

Clinicians utilize electronic health record (EHR) systems during time-constrained patient encounters where large amounts of clinical text must be synthesized at the point of care. Qualitative methods may be an effective approach for uncovering cognitive processes associated with the synthesis of clinical documents within EHR systems. We utilized a think-aloud protocol and content analysis with the goal of understanding cognitive processes and barriers involved as medical interns synthesized patient clinical documents in an EHR system to accomplish routine clinical tasks. Overall, interns established correlations of significance and meaning between problem, symptom and treatment concepts to inform hypotheses generation and clinical decision-making. Barriers identified with synthesizing EHR documents include difficulty searching for patient data, poor readability, redundancy, and unfamiliar specialized terms. Our study can inform recommendations for future designs of EHR clinical document user interfaces to aid clinicians in providing improved patient care.

Farri, Oladimeji; Pieckiewicz, David S.; Rahman, Ahmed S.; Adam, Terrence J.; Pakhomov, Serguei V.; Melton, Genevieve B.

2012-01-01

57

Portal circulation and portal hypertension  

Microsoft Academic Search

During the last 25 years, there have been important developments in visualising the portal vein, in examining its contents, and in measuring the pressure of blood flowing within it. Radiologists have set the scene and now is the time of the scanner. These technical advances have been applied to the diagnosis and treatment of patients with portal hypertension, and many

S Sherlock

1978-01-01

58

Building a Personalized Education Portal: Get a Behind-the-Scenes Look at LSU's Award-Winning System.  

ERIC Educational Resources Information Center

|Describes the Personal Access Web Services (PAWS) at Louisiana State University, a portal application which offers enterprise, workgroup, and personal services. The paper highlights: PAWS project planning; PAWS as a portal; PAWS implementation; account accreditation; user authentication; legacy integration; mapping credentials; transmission of…

Ethridge, Robin R.; Hadden, Cynthia M; Smith, Michael P.

2000-01-01

59

Use of a Web 2.0 Portal to Improve Education and Communication in Young Patients With Families: Randomized Controlled Trial  

PubMed Central

Background Diabetes requires extensive self-care and comprehensive knowledge, making patient education central to diabetes self-management. Web 2.0 systems have great potential to enhance health information and open new ways for patients and practitioners to communicate. Objective To develop a Web portal designed to facilitate self-management, including diabetes-related information and social networking functions, and to study its use and effects in pediatric patients with diabetes. Methods A Web 2.0 portal was developed in collaboration with patients, parents, and practitioners. It offered communication with local practitioners, interaction with peers, and access to relevant information and services. Children and adolescents with diabetes in a geographic population of two pediatric clinics in Sweden were randomized to a group receiving passwords for access to the portal or a control group with no access (n=230) for 1 year. All subjects had access during a second study year. Users’ activity was logged by site and page visits. Health-related quality of life (HRQOL), empowerment (DES), and quality of information (QPP) questionnaires were given at baseline and after 1 and 2 study years. Clinical data came from the Swedish pediatric diabetes quality registry SWEDIABKIDS. Results There was a continuous flow of site visits, decreasing in summer and Christmas periods. In 119/233 families (51%), someone visited the portal the first study year and 169/484 (35%) the second study year. The outcome variables did not differ between intervention and control group. No adverse treatment or self-care effects were identified. A higher proportion of mothers compared to fathers visited once or more the first year (P<.001) and the second year (P<.001). The patients who had someone in the family visiting the portal 5 times or more, had shorter diabetes duration (P=.006), were younger (P=.008), had lower HbA1c after 1 year of access (P=.010), and were more often girls (P<.001). Peer interaction seems to be a valued aspect. Conclusions The Web 2.0 portal may be useful as a complement to traditional care for this target group. Widespread use of a portal would need integration in routine care and promotion by diabetes team members. Trial Registration International Standard Randomized Controlled Trial Number (ISRCTN):92107365; http://www.controlled-trials.com/ISRCTN92107365/ (Archived by WebCite at http://webcitation.org/6IkiIvtSb).

Ludvigsson, Johnny; Nordfeldt, Sam

2013-01-01

60

The REUSE project: EHR as single datasource for biomedical research.  

PubMed

Integrating biomedical research and patient care is a challenging issue requiring interoperability solutions. During a clinical trial, clinical data are captured twice, first in the Electronic Health Record (EHR) and then in the Clinical trials Data Management System (CDMS). The aim of REUSE (Retrieving EHR Useful data for Secondary Exploitation) project is to provide a single source solution for electronic data capture to the investigators of a university hospitals involved in a multi-centric clinical trial. We first investigated the differences between the workflows of patient care and biomedical research to specify the use of EHR for clinical trials. Then we defined a semantic interoperability framework in order to enable the reuse of EHR clinical data and implemented a mediator that transforms CDISC Operational Data Model (ODM) XML into proprietary XML document templates of different EHR solutions and vice-versa. Implementing electronic data capture for biomedical research within EHR eliminates redundant data entry, thus improving data quality and processing speed. Moreover, unlike other initiatives such as IHE integration profile "Retrieve Form for Data Capture" (RFD), the REUSE approach ensures that all clinical data is kept in the EHR whatever the context of data capture is. PMID:20841899

El Fadly, Abdennaji; Lucas, Noël; Rance, Bastien; Verplancke, Philippe; Lastic, Pierre-Yves; Daniel, Christel

2010-01-01

61

Toward the Knowledge Portal: Public Broadcasting and University Continuing Education in the Internet Age.  

ERIC Educational Resources Information Center

|Discusses digital technology convergence and its effects on the information and entertainment industries and on public television. Highlights include media-based educational organizations and their place in the knowledge marketplace; relationships between content providers and their suppliers and customers; competition; distance and continuing…

Vedro, Steven R.

1999-01-01

62

WEB-based Enabling of Education and Research in ISTEC The ChipsnSalsa Portal  

Microsoft Academic Search

WEB-based education tools that incorporate static content, video-on-demand, live synchronized video, as well as collaboration research spaces, often present information as isolated and diffuse topics compromising the integral learning and research experience. The Ibero- American Science & Technology Consortium (ISTEC) \\

Henry Jerez; Ramiro Jordan; Chaouki Abdallah; Johann Van Reenen; Guillermo Jacquenot; Daniel Vargas

63

Incomplete EHR Adoption: Late Uptake of Patient Safety and Cost Control Functions  

Microsoft Academic Search

Many functions important to realizing the full potential from electronic health records (EHRs) may not be selected by all physicians using EHRs in the ambulatory setting. This article examines the extent to which EHR systems used by Florida physicians include functionalities that the Institute of Medicine has designated as being critical for optimal performance. Results indicate that EHR systems used

Nir Menachemi; Eric W. Ford; Leslie M. Beitsch; Robert G. Brooks

2007-01-01

64

Grid Computing Portals Lecture  

NSDL National Science Digital Library

Grid Computing Lecture~~Grid portals: purpose, application-based portals, historical examples, GPDK, Gridport, etc., OGCE2/gridsphere portal, portal implementation, portlets, JSR 168, portlet source and deployment files.

Ferner, Clayton; Wilkinson, Barry

2011-07-05

65

The NUCLEONICA Nuclear Science Portal  

NASA Astrophysics Data System (ADS)

NUCLEONICA (www.nucleonica.net) is a new nuclear science web portal which provides a customisable, integrated environment and collaboration platform using the latest internet ``Web 2.0'' technology. NUCLEONICA is aimed at professionals, academics and students working in nuclear power, health physics and radiation protection, nuclear and radio-chemistry, and astrophysics. A unique feature of the portal is the wide range of user friendly web-based nuclear science applications. The portal is also ideal for education and training purposes and as a knowledge management platform to preserve nuclear knowledge built up over many decades.

Magill, Joseph; Dreher, Raymond

2009-08-01

66

Portal hypertension.  

PubMed

The treatment of portal hypertensive gastrointestinal hemorrhage has seen many new and innovative advances in the past 15 years, including pharmocotherapy, sclerotherapy, transjugular intrahepatic portacaval shunt, partial portacaval shunt, and hepatic transplantation. Such an array of therapeutic options provides great flexibility for the physicians managing this complex disorder. The less invasive procedures tend to be associated with higher rates of rebleeding from esophageal varices. However, these procedures serve as excellent bridges to hepatic transplantation in poor-risk patients. Surgical portasystemic shunts offer a permanent solution to portal hypertensive bleeding but also have several drawbacks. Standard (end-to-side or side-to-side) portacaval shunts are associated with unacceptably high rates of p4rtasystemic encephalopathy because of complete diversion of portal flow away from the liver. Selective shunts, such as the distal splenorenal shunt, result in maintenance of portal perfusion, but this is not lasting in alcoholic cirrhotics. Partial shunting (small-diameter portacaval H-graft with collateral ligation) is the most recent addition to the surgical armamentarium. This allows for hepatic portal perfusion, thus minimizing encephalopathy rates, but it violates the right upper quadrant if the patient is a candidate for hepatic transplantation. This large array of treatment options, each with its own advantages and disadvantages, permits for careful selection of the best modality based on several influencing factors. These include the underlying liver disease, the prognosis, the health team's experience, the resources available to the patient and the community, and the cost-effectiveness of each treatment. PMID:7583983

Rhee, P; Sarfeh, I J

1993-01-01

67

Secure portal.  

SciTech Connect

There is a need in security systems to rapidly and accurately grant access of authorized personnel to a secure facility while denying access to unauthorized personnel. In many cases this role is filled by security personnel, which can be very costly. Systems that can perform this role autonomously without sacrificing accuracy or speed of throughput are very appealing. To address the issue of autonomous facility access through the use of technology, the idea of a ''secure portal'' is introduced. A secure portal is a defined zone where state-of-the-art technology can be implemented to grant secure area access or to allow special privileges for an individual. Biometric technologies are of interest because they are generally more difficult to defeat than technologies such as badge swipe and keypad entry. The biometric technologies selected for this concept were facial and gait recognition. They were chosen since they require less user cooperation than other biometrics such as fingerprint, iris, and hand geometry and because they have the most potential for flexibility in deployment. The secure portal concept could be implemented within the boundaries of an entry area to a facility. As a person is approaching a badge and/or PIN portal, face and gait information can be gathered and processed. The biometric information could be fused for verification against the information that is gathered from the badge. This paper discusses a facial recognition technology that was developed for the purposes of providing high verification probabilities with low false alarm rates, which would be required of an autonomous entry control system. In particular, a 3-D facial recognition approach using Fisher Linear Discriminant Analysis is described. Gait recognition technology, based on Hidden Markov Models has been explored, but those results are not included in this paper. Fusion approaches for combining the results of the biometrics would be the next step in realizing the secure portal concept.

Nelson, Cynthia Lee

2007-09-01

68

UNESCO Library Portal  

NSDL National Science Digital Library

This site from UNESCO is offered as a resource for information on both worldwide libraries and issues and news related to librarianship, with an emphasis on "activities in the Organization's fields of competence such as education, sciences, culture and information." As with most portals, this metasite features annotated links organized by category and topic. In this case, they include library Websites (organized by type), library associations and networks, preservation and access initiatives, librarianship, education and training, and conferences and meetings (this section helpfully lists specific events). Other features include library news and a featured site on the main page, an internal search engine, and a free newsletter.

69

Portal biliopathy  

PubMed Central

Biliary ductal changes are a common radiological finding in patients with portal hypertension, however only a small percentage of patients (5%-30%) develop symptomatic bile duct obstruction. The exact pathogenesis is not clear, but an involvement of factors such as bile duct compression by venous collaterals, ischemia, and infection is accepted by most authors. Although endoscopic retrograde cholangiopancreatography was used to define and diagnose this condition, magnetic resonance cholangiopancreatography is currently the investigation of choice for diagnosing this condition. Treatment is indicated only for symptomatic cases. Portosystemic shunts are the treatment of choice for symptomatic portal biliopathy. In the majority of patients, the changes caused by biliopathy resolve after shunt surgery, however, 15%-20% patients require a subsequent bilio-enteric bypass or endoscopic management for persistent biliopathy. There is a role for endoscopic therapy in patients with bile duct stones, cholangitis or when portosystemic shunt surgery is not feasible.

Chattopadhyay, Somnath; Nundy, Samiran

2012-01-01

70

Patient demands and the development of EHR systems.  

PubMed

Patient demands to the development and implementation of electronic health care records (EHR) are rarely considered in professional health informatics societies. This project has investigated the citizens' opinion in Denmark by means of a newly developed methodology "development space". A group of citizens form a lay panel and are briefed on the fundamental issues in the development and strategies for EHR. They confront an expert panel with a number of questions and on the basis of the answers they write a report. The results show that the citizens in the lay panel demanded clear answers to strategic, technical and attitudinal questions. They demonstrated an ability to see through relatively complex relations and formulate multifaceted opinions, which can add valuable input to the development and implementation process of EHR in the professional environments. PMID:14664100

Zurita, Laura; Nøhr, Christian

2003-01-01

71

Understanding differences in electronic health record (EHR) use: linking individual physicians' perceptions of uncertainty and EHR use patterns in ambulatory care.  

PubMed

OBJECTIVE: Electronic health records (EHR) hold great promise for managing patient information in ways that improve healthcare delivery. Physicians differ, however, in their use of this health information technology (IT), and these differences are not well understood. The authors study the differences in individual physicians' EHR use patterns and identify perceptions of uncertainty as an important new variable in understanding EHR use. DESIGN: Qualitative study using semi-structured interviews and direct observation of physicians (n=28) working in a multispecialty outpatient care organization. MEASUREMENTS: We identified physicians' perceptions of uncertainty as an important variable in understanding differences in EHR use patterns. Drawing on theories from the medical and organizational literatures, we identified three categories of perceptions of uncertainty: reduction, absorption, and hybrid. We used an existing model of EHR use to categorize physician EHR use patterns as high, medium, and low based on degree of feature use, level of EHR-enabled communication, and frequency that EHR use patterns change. RESULTS: Physicians' perceptions of uncertainty were distinctly associated with their EHR use patterns. Uncertainty reductionists tended to exhibit high levels of EHR use, uncertainty absorbers tended to exhibit low levels of EHR use, and physicians demonstrating both perspectives of uncertainty (hybrids) tended to exhibit medium levels of EHR use. CONCLUSIONS: We find evidence linking physicians' perceptions of uncertainty with EHR use patterns. Study findings have implications for health IT research, practice, and policy, particularly in terms of impacting health IT design and implementation efforts in ways that consider differences in physicians' perceptions of uncertainty. PMID:23698256

Lanham, Holly Jordan; Sittig, Dean F; Leykum, Luci K; Parchman, Michael L; Pugh, Jacqueline A; McDaniel, Reuben R

2013-05-22

72

Funding alternatives in EHR adoption: beyond HITECH incentives and traditional approaches.  

PubMed

The meaningful use incentives under HITECH may be inadequate to address the financial challenges many hospitals face in implementing electronic health records (EHRs). Hospitals can fill the capital gap between EHR costs and available funds by exploring other potential funding sources. These sources include additional grants, funding permissible under EHR regulations, vendor financing, and tax benefits under IRS Section 179. PMID:23678695

Wang, Tiankai; Wang, Yangmei; Biedermann, Sue

2013-05-01

73

How to successfully select and implement electronic health records (EHR) in small ambulatory practice settings  

Microsoft Academic Search

BACKGROUND: Adoption of EHRs by U.S. ambulatory practices has been slow despite the perceived benefits of their use. Most evaluations of EHR implementations in the literature apply to large practice settings. While there are similarities relating to EHR implementation in large and small practice settings, the authors argue that scale is an important differentiator. Focusing on small ambulatory practices, this

Nancy M. Lorenzi; Angelina Kouroubali; Don E. Detmer; Meryl Bloomrosen

2009-01-01

74

Risks, Barriers, and Benefits of EHR Systems: A Comparative Study Based on Size of Hospital  

Microsoft Academic Search

With the government backing the concept of electronic health records (EHR), and with technology being used in every walk of life, more and more hospitals are looking into implementing EHR systems. A national survey of U.S. hospitals was conducted in February\\/March 2005 to identify the status of EHR systems in hospitals regarding the core functionalities implemented (as identified by the

Minal Thakkar; Diane C. Davis

75

SNOMED CT Survey: An Assessment of Implementation in EMR\\/EHR Applications  

Microsoft Academic Search

A descriptive study of health information technology (HIT) vendors was conducted to identify which EMR\\/EHR vendors currently work or anticipate working with SNOMED CT, determine the prevalence of SNOMED CT integration in electronic medical record (EMR) and electronic health record (EHR) products, identify the available and potential future applications for SNOMED CT in EMR\\/EHR systems, and learn what prompts vendors

Kathy Giannangelo; Susan H. Fenton

76

Building an information security strategy for EHR: Guidelines for assessing the current situation  

Microsoft Academic Search

This paper is looking at electronic health record (EHR) systems and their information security strategy. It focuses on the first step of building an information security strategy which is analysing the current situation of an EHR system. This research is based on different research methods applied to different EHR systems. In this paper we define eight elements that can be

Yara Mohammad; Lampros Stergioulas

2010-01-01

77

AAMC MedEdPORTAL  

NSDL National Science Digital Library

MedEdPORTAL is a free peer-reviewed publication service and repository for medical and oral health teaching materials, assessment tools, and faculty development resources. All copyright and patient privacy issues are addressed during the submission process so users around the globe can download and utilize any and all of the published resources for educational purposes without legal infringements.

Colleges, The A.

2008-01-01

78

Building a reference functional model for EHR systems  

Microsoft Academic Search

IntroductionOur aim was to develop a reference functional model for electric health record systems (RFM). Such a RFM is built from functions using functional descriptive elements (FDEs) and represents the static relationships between them. This paper presents a new format for describing electric health record (EHR) system functions.

Yuki Sumita; Mami Takata; Keiju Ishitsuka; Yasuyuki Tominaga; Kazuhiko Ohe

2007-01-01

79

Privacy preserving EHR system using attribute-based infrastructure  

Microsoft Academic Search

Secure management of Electronic Health Records (EHR) in a distributed computing environment such as cloud computing where computing resources including storage is provided by a third party service provider is a challenging task. In this paper, we explore techniques which guarantees security and privacy of medical data stored in the cloud. We show how new primitives in attribute-based cryptography can

Shivaramakrishnan Narayan; Martin Gagné; Reihaneh Safavi-Naini

2010-01-01

80

Achieving e-health care in a distributed EHR system  

Microsoft Academic Search

In modern health care, use of Web based EHR (electronic health record) system has increased remarkably because of its world-wide accessibility and the facility of the collaborative work among multiple users. Major drawbacks of such centralized Web based system are link failure and low or no fault tolerance. In an unreliable network, it is very commonplace that service is unavailable

Debkumar Patra; Saikat Ray; J. Mukhopadhyay; B. Majumdar; A. K. Majumdar

2009-01-01

81

Paleontology Portal  

NSDL National Science Digital Library

Created by the University of California Museum of Paleontology, with assistance from the Society of Vertebrate Paleontology and the United States Geological Survey, the Paleontology Portal is a nice resource for anyone who may be interested in the field of paleontology. The site is divided into a number of separate areas, and visitors would do well to begin by taking a look through the Exploring Time & Space feature. Clicking on this feature will bring users to a map of the United States that is overlaid with the complete array of geological time periods, such as the Quaternary, Permian, and the Triassic, to name but a few. Along with this helpful resource, the fossil gallery is a real treat, as visitors can view fossilized remains by geologic time period or by taxonomic group. Finally, the Famous Flora and Fauna area allows visitors the opportunity to view such notable finds as the Burgess Shale, the Petrified Forest, and of course, the La Brea Tar Pits.

82

uPortal 2.0.1  

NSDL National Science Digital Library

Presented by Java Administration Special Interest Group (JA-SIG), uPortal is a free, sharable portal constructed by institutions of higher-education. This portal is designed to create an online relationship among campus constituencies by providing community tools such as chats, forums, surveys, and more. An open-standard effort that uses Java, XML, JSP, and J2EE, uPortal is available as both a "quick-start" release package that includes a servlet container and database, and also as a "uPortal-only" package, which needs to be installed into an existing servlet container and connected to existing data repositories such as LDAP and a relational database.

83

Polish Astronomy Portal ASTRONOMIA.PL  

NASA Astrophysics Data System (ADS)

Astronomia.pl is non-profit internet portal. It's mission is education and popularisation of astronomy. The website was created in November 2001 and quickly became one of the most popular astronomical internet services in Poland. Nowadays it offers over 20 sections. These sections are standard portal features like news, discussion forum, galleries of images, as well as unique ideas, like virtual library of astronomical master thesis. The portal owns several internet domains: astronomia.pl - the main portal, kopernik.pl - biographies of astronomers, astrowww.pl - collection of astronomical websites created by astronomy amateurs. Recently the portal obtained patronage from Polish Association of Astronomy Amateurs. Astronomia.pl supports many astronomical events in Poland. The address of the website is www.astronomia.pl.

Czart, K.

84

The Effect of a Learning Environment Using an Electronic Health Record (EHR) on Undergraduate Nursing Students' Behaviorial Intention to Use an EHR  

ERIC Educational Resources Information Center

|The purpose of this study was to explore the effect of a learning environment using an Electronic Health Record (EHR) on undergraduate nursing students' behavioral intention (BI) to use an EHR. BI is defined by Davis (1989) in the Technology Acceptance Model (TAM) as the degree to which a person has formulated conscious plans to perform or not…

Foley, Shawn

2011-01-01

85

National Science Foundation Facilitation of AGU Scientists' K-14 Education and Outreach Activities  

NASA Astrophysics Data System (ADS)

The National Science Foundation encourages the participation of geoscientists in K-14 education and outreach and provides support for that participation through a wide variety of programs. At the most general level, NSF requires that scientists describe the broader impacts of their research in their proposals. While broader impacts are not restricted to education and outreach, this requirement has encouraged many scientists to consider opportunities for K-14 education and outreach. Many NSF-wide programs provide financial support for K-14 education and outreach. Some are long-standing programs like Research Experiences for Undergraduates (REU), which have been used effectively by the geoscience community to introduce undergraduates to our field. Other programs, like CAREER, encourage faculty to develop innovative teaching and curricular approaches and to relate them to their research program. The Education and Human Resources Directorate (EHR) of NSF provides funds for a variety of undergraduate education improvements, and for elementary and secondary education activities. EHR also provides opportunities for informal education that have been used by the geoscience community to develop museum exhibits, IMAX films, television programs, and other high visibility outreach activities. The Directorate for Geosciences (GEO) holds competitions in the Geoscience Education Program and Opportunities to Enhance Diversity in the Geosciences that provide funds focused on development in our own field. Other specialized competitions, like awards associated with the Center for Ocean Science Education Excellence, have targeted the specific K-14 education and outreach needs of portions of our community. Finally, GEO has facilitated the development of the Digital Library for Earth System Education (DLESE) that has established a digital portal to age-appropriate, peer-reviewed curricular material for teachers.

Leinen, M.; Prendeville, J.

2002-12-01

86

Barriers for Adopting Electronic Health Records (EHRs) by Physicians  

PubMed Central

CONFLICT OF INTEREST: NONE DECLARED Introduction Electronic Medical Records (EMRs) are computerized medical information systems that collect, store and display patient information. They are means to create legible and organized recordings and to access clinical information about individual patients. Despite of the positive effects of the EMRs usage in medical practices, the adoption rate of such systems is still low and meets resistance from physicians. The EHRs represent an essential tool for improving both in the safety and quality of health care, though physicians must actively use these systems to accrue the benefits. This study was unsystematic-review. Aim The aim of this study was to express barriers perceived y physicians to the adoption of the EHRs. Method of the study This study was non-systematic reviewed which the literature was searched on barriers perceived by physicians to the adoption of Electronic Health Records (EHRs) with the help of library, books, conference proceedings, data bank, and also searches engines available at Google, Google scholar. Discussion For our searches, we employed the following keywords and their combinations: physicians, electronic medical record, electronic health record, barrier, and adoption in the searching areas of title, keywords, abstract, and full text. In this study, more than 100 articles and reports were collected and 27 of them were selected based on their relevancy. Electronic health record use requires the presence of certain user and system attributes, support from others, and numerous organizational and environment facilitators.

Ajami, Sima; Bagheri-Tadi, Tayyebe

2013-01-01

87

The GIS 2 GPS Portal  

NSDL National Science Digital Library

This resource, created by The GIS 2 GPS Portal Resources For Educators & Students, "want[s] to make educators and students aware of these two new emerging technologies, Geographical Information System (GIS), Global Positioning System (GPS), and Remote Sensing (RS)." The resource contains links to courses, conferences, collaborators, software, hardware, discussion forums, picture galleries and blogs. Additional subtopics on GIS and GPS are featured on the site. These contain things such as lesson plans and other projects for education. Overall, this is a nice site for a broad overview of information systems and the technology behind it.

2009-09-22

88

STRATEGIC E-HR: MATCHING E-BUSINESS VALUE DRIVERS AND HR MANAGEMENT TASKS  

Microsoft Academic Search

The scant e-HR literature has thus far focused on the shift from traditional HR Management to the adoption of e-HR. However, very little attention has been granted into understanding the strategic match between actual HR tasks and e-HR value creation. This paper embeds e-business logic into HR operations management. This is done by conceptualizing a framework for analyzing and evaluating

Bjørn-Tore Flåten; Rotem Shneor

2008-01-01

89

Internet portals for chemists  

Microsoft Academic Search

This paper is to give an overview of freely available subject services providing information for chemists on the Internet. An attempt is made to differentiate between portals and other kinds of resources encountered on the Web. A definition of portals is given. Subject collections of general chemistry, analytical chemistry, environmental research, toxicology and patents are described. Internet chemistry portals can

Cornelia Glander-höbel

2002-01-01

90

Factors influencing student acceptance and use of academic portals  

Microsoft Academic Search

Institutions of higher education have increasing turned to web portals as a way to connect with students. These portals are\\u000a designed to provide students a centralized point of access to information and services. In spite of the efforts put into developing\\u000a and maintaining these portals, their use by students can be disappointing. The study described in this paper examines factors

Adrien Presley; Theresa Presley

2009-01-01

91

A red-flag-based approach to risk management of EHR-related safety concerns.  

PubMed

Although electronic health records (EHRs) have a significant potential to improve patient safety, EHR-related safety concerns have begun to emerge. Based on 369 responses to a survey sent to the memberships of the American Society for Healthcare Risk Management and the American Health Lawyers Association and supplemented by our previous work in EHR-related patient safety, we identified the following common EHR-related safety concerns: (1) incorrect patient identification; (2) extended EHR unavailability (either planned or unplanned); (3) failure to heed a computer-generated warning or alert; (4) system-to-system interface errors; (5) failure to identify, find, or use the most recent patient data; (6) misunderstandings about time; (7) incorrect item selected from a list of items; and (8) open or incomplete orders. In this article, we present a "red-flag"-based approach that can be used by risk managers to identify potential EHR safety concerns in their institutions. An organization that routinely conducts EHR-related surveillance activities, such as the ones proposed here, can significantly reduce risks associated with EHR implementation and use. PMID:24078205

Sittig, Dean F; Singh, Hardeep

2013-01-01

92

Assessing performance of an Electronic Health Record (EHR) using Cognitive Task Analysis  

Microsoft Academic Search

BackgroundMany Electronic Health Record (EHR) systems fail to provide user-friendly interfaces due to the lack of systematic consideration of human-centered computing issues. Such interfaces can be improved to provide easy to use, easy to learn, and error-resistant EHR systems to the users.

Himali Saitwal; Xuan Feng; Muhammad F. Walji; Vimla L. Patel; Jiajie Zhang

2010-01-01

93

Informed consent and the security of the electronic health record (EHR): some policy considerations  

Microsoft Academic Search

Various codes of ethics, and in particular the IMIA Code of Ethics for Health Information Professionals (HIPs), stipulate that the subject of an electronic health record (EHR) has a series of security rights with respect to her\\/his EHR, and that to some degree these rights center in the notion of informed consent. This paper examines the ethical basis of this

Eike-henner W. Kluge

2004-01-01

94

How to pay for that EHR. Selecting financing vehicles for your group's electronic health record.  

PubMed

As the health care industry embraces electronic health record (EHR) technology, medical group leaders must decide how to finance it. Lease, buy or use a hybrid lease? Selecting the right financing option may allow you to obtain the high-end EHR that could optimize the quality of your practice's care. PMID:17486774

Deyett, Michael T

2007-04-01

95

Factors and Forces Affecting EHR System Adoption: Report of a 2004 ACMI Discussion  

Microsoft Academic Search

After the first session of the American College of Medical Informatics 2004 retreat, during which the history of electronic health records was reviewed, the second session served as a forum for discussion about the state of the art of EHR adoption. Adoption and diffusion rates for both inpatient and outpatient EHRs are low for a myriad of reasons ranging from

JOAN S. ASH; DAVID W. BATES

2004-01-01

96

Position Paper: Factors and Forces Affecting EHR System Adoption: Report of a 2004 ACMI Discussion  

Microsoft Academic Search

After the first session of the American College of Medical Informatics 2004 retreat, during which the history of electronic health records was reviewed, the second session served as a forum for discussion about the state of the art of EHR adoption. Adoption and diffusion rates for both inpatient and outpatient EHRs are low for a myriad of reasons ranging from

Joan S. Ash; David W. Bates

2005-01-01

97

Portal: Your Door to World Languages and Cultures  

ERIC Educational Resources Information Center

|Portal: Your Door to World Languages and Cultures was a series of public cultural events, in a variety of formats, created through a new partnership between the credit and continuing education (noncredit) foreign language programs at the Community College of Baltimore County (CCBC). Portal was designed to cultivate interest in foreign languages…

Elliott, Don; Lawton, Rachele

2009-01-01

98

Building a logical EHR architecture based on ISO 13606 standard and semantic web technologies.  

PubMed

Among the existing patterns of EHR interoperability, the ISO 13606 standard is an important consideration. It is believed that the use of this norm, in conjunction with semantic technologies, may aid in the construction of a robust architecture, keeping in mind the challenges of semantic interoperability. The objective of this paper is to present a proposal for an EHR architecture, based on ISO 13606 and on the utilization of semantic technologies, for a real EHR scenario. In order to accomplish that, a real EHR scenario is described, as well as its main interoperability requirements and a candidate architecture is proposed to solve the presented challenges of interoperability. The ability of the ISO 13606 EHR reference model to accommodate the scenario was highlighted, together with the support provided by the use of the ontology specification languages--RDF and OWL--in respect to the maintenance of a controlled vocabulary. PMID:20841670

Santos, Marcelo R; Bax, Marcello P; Kalra, Dipak

2010-01-01

99

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

100

Becoming a Learning Organization: New Directions in Science Education Research at the National Science Foundation  

Microsoft Academic Search

The Education and Human Resources (EHR) Directorate at the National Science Foundation has been examining its role in supporting the development of new approaches to science, technology, engineering and mathematics (STEM) education. This article explores what it means to be scientifically literate, what it takes to become a learning organization, how the EHR Directorate is working towards becoming such an

Judith A. Ramaley; Barbara M. Olds; Janice Earle

2005-01-01

101

Acute portal vein thrombosis.  

PubMed

The findings in acute portal vein thrombosis in a patient with chronic calcific pancreatitis and two episodes of pancreatic surgery are described. The diagnosis was made by ultrasound, which showed a dilated portal vein filled with low-level echoes, surrounding hepatic oedema, hypertrophy of the hepatic artery, splenomegaly, collateral vessels and ascites. This was confirmed by computed tomography. The ultrasonic differences in appearance between acute and chronic portal vein thrombosis are discussed, in the context of portal hypertension. The diagnosis of acute portal vein thrombosis should be considered in patients in the appropriate situation who suffer a sudden clinical deterioration with right upper quadrant or abdominal pain. Ultrasound is recommended as the imaging modality of first choice because of the flexibility of its scanning plane and its real time and Doppler capabilities. Computed tomography is valuable in patients with an ileus or heavy pancreatic calcification and for its ability to demonstrate patent vessels on intravenous injection of contrast medium. PMID:3319354

Albertyn, L E

1987-11-01

102

Users' perspectives of barriers and facilitators to implementing EHR in Canada: A study protocol  

PubMed Central

Background In Canada, federal, provincial, and territorial governments are developing an ambitious project to implement an interoperable electronic health record (EHR). Benefits for patients, healthcare professionals, organizations, and the public in general are expected. However, adoption of an interoperable EHR remains an important issue because many previous EHR projects have failed due to the lack of integration into practices and organizations. Furthermore, perceptions of the EHR vary between end-user groups, adding to the complexity of implementing this technology. Our aim is to produce a comprehensive synthesis of actual knowledge on the barriers and facilitators influencing the adoption of an interoperable EHR among its various users and beneficiaries. Methods First, we will conduct a comprehensive review of the scientific literature and other published documentation on the barriers and facilitators to the implementation of the EHR. Standardized literature search and data extraction methods will be used. Studies' quality and relevance to inform decisions on EHR implementation will be assessed. For each group of EHR users identified, barriers and facilitators will be categorized and compiled using narrative synthesis and meta-analytical techniques. The principal factors identified for each group of EHR users will then be validated for its applicability to various Canadian contexts through a two-round Delphi study, involving representatives from each end-user groups. Continuous exchanges with decision makers and periodic knowledge transfer activities are planned to facilitate the dissemination and utilization of research results in policies regarding the implementation of EHR in the Canadian healthcare system. Discussion Given the imminence of an interoperable EHR in Canada, knowledge and evidence are urgently needed to prepare this major shift in our healthcare system and to oversee the factors that could affect its adoption and integration by all its potential users. This synthesis will be the first to systematically summarize the barriers and facilitators to EHR adoption perceived by different groups and to consider the local contexts in order to ensure the applicability of this knowledge to the particular realities of various Canadian jurisdictions. This comprehensive and rigorous strategy could be replicated in other settings.

Gagnon, Marie-Pierre; Shaw, Nicola; Sicotte, Claude; Mathieu, Luc; Leduc, Yvan; Duplantie, Julie; Maclean, James; Legare, France

2009-01-01

103

How to successfully select and implement electronic health records (EHR) in small ambulatory practice settings  

PubMed Central

Background Adoption of EHRs by U.S. ambulatory practices has been slow despite the perceived benefits of their use. Most evaluations of EHR implementations in the literature apply to large practice settings. While there are similarities relating to EHR implementation in large and small practice settings, the authors argue that scale is an important differentiator. Focusing on small ambulatory practices, this paper outlines the benefits and barriers to EHR use in this setting, and provides a "field guide" for these practices to facilitate successful EHR implementation. Discussion The benefits of EHRs in ambulatory practices include improved patient care and office efficiency, and potential financial benefits. Barriers to EHRs include costs; lack of standardization of EHR products and the design of vendor systems for large practice environments; resistance to change; initial difficulty of system use leading to productivity reduction; and perceived accrual of benefits to society and payers rather than providers. The authors stress the need for developing a flexible change management strategy when introducing EHRs that is relevant to the small practice environment; the strategy should acknowledge the importance of relationship management and the role of individual staff members in helping the entire staff to manage change. Practice staff must create an actionable vision outlining realistic goals for the implementation, and all staff must buy into the project. The authors detail the process of implementing EHRs through several stages: decision, selection, pre-implementation, implementation, and post-implementation. They stress the importance of identifying a champion to serve as an advocate of the value of EHRs and provide direction and encouragement for the project. Other key activities include assessing and redesigning workflow; understanding financial issues; conducting training that is well-timed and meets the needs of practice staff; and evaluating the implementation process. Summary The EHR implementation experience depends on a variety of factors including the technology, training, leadership, the change management process, and the individual character of each ambulatory practice environment. Sound processes must support both technical and personnel-related organizational components. Additional research is needed to further refine recommendations for the small physician practice and the nuances of specific medical specialties.

2009-01-01

104

Standardized and flexible health data management with an archetype driven EHR system (EHRflex).  

PubMed

To build a semantically interoperable Electronic Health Record is one of the most challenging research fields in health informatics. In order to reach this objective, EHR standards that formally describe health data structures have to be used. CEN EN13606 is one of the most promising approaches. It covers the technical needs for semantic interoperability and, at the same time, it incorporates a mechanism (archetype model) that enables clinical domain experts to participate in building an EHR system. In this paper we present EHRflex, a generic system based on archetypes. It empowers the clinician and allows him to manage his own EHR system in a simple and generic way, assuring that the user works with underlying standardized data structures. These can be exchanged with other people and systems when needed. EHRflex introduces EHR standards into the clinical routine delivering a technical platform which works directly on archetype based data. PMID:20543331

Brass, Anton; Moner, David; Hildebrand, Claudia; Robles, Montserrat

2010-01-01

105

Method to Integrate Clinical Guidelines into the Electronic Health Record (EHR) by Applying the Archetypes Approach.  

PubMed

Clinical guidelines are documents that assist healthcare professionals, facilitating and standardizing diagnosis, management, and treatment in specific areas. Computerized guidelines as decision support systems (DSS) attempt to increase the performance of tasks and facilitate the use of guidelines. Most DSS are not integrated into the electronic health record (EHR), ordering some degree of rework especially related to data collection. This study's objective was to present a method for integrating clinical guidelines into the EHR. The study developed first a way to identify data and rules contained in the guidelines, and then incorporate rules into an archetype-based EHR. The proposed method tested was anemia treatment in the Chronic Kidney Disease Guideline. The phases of the method are: data and rules identification; archetypes elaboration; rules definition and inclusion in inference engine; and DSS-EHR integration and validation. The main feature of the proposed method is that it is generic and can be applied toany type of guideline. PMID:23920682

Garcia, Diego; Moro, Claudia Maria Cabral; Cicogna, Paulo Eduardo; Carvalho, Deborah Ribeiro

2013-01-01

106

Leveraging EHR data for outcomes and comparative effectiveness research in oncology.  

PubMed

Along with the increasing adoption of electronic health records (EHRs) are expectations that data collected within EHRs will be readily available for outcomes and comparative effectiveness research. Yet the ability to effectively share and reuse data depends on implementing and configuring EHRs with these goals in mind from the beginning. Data sharing and integration must be planned both locally as well as nationally. The rich data transmission and semantic infrastructure developed by the National Cancer Institute (NCI) for research provides an excellent example of moving beyond paper-based paradigms and exploiting the power of semantically robust, network-based systems, and engaging both domain and informatics expertise. Similar efforts are required to address current challenges in sharing EHR data. PMID:22948276

Manion, Frank J; Harris, Marcelline R; Buyuktur, Ayse G; Clark, Patricia M; An, Lawrence C; Hanauer, David A

2012-12-01

107

Human Factors Guidance to Prevent Healthcare Disparities with the Adoption of EHRs.  

National Technical Information Service (NTIS)

This report is derived from several widely recognized international standards and the current scientific literature. It is intended for EHR system designers, developers, system architects and system engineers. The advances in Information Technology (IT) t...

M. C. Gibbons M. T. Quinn S. Z. Lowry

2011-01-01

108

[Portal gastropathy: diagnosis, classification].  

PubMed

Portal hypertensive gastropathy (PHG) is a complex of secondary macroscopic and microscopic changes in the mucous layer of the stomach, resulting from portal hypertension of any origin. The overall prevalence of PHG ranges from 9.1 to 80%. PHG is a potential cause of an acute or chronic gastric bleeding. The presence of PHG is associated with prognosis deterioration that dictates the need for improved diagnosis and treatment strategy. The article summarizes literature on the pathological changes, diagnosis and classification of portal hypertensive gastropathy. PMID:23402194

Shertsinger, A G; Zhigalova, S B; Semenova, T S; Tsaava, D V

2012-01-01

109

The Impact of Electronic Patient Portals on Patient Care: A Systematic Review of Controlled Trials  

PubMed Central

Background Modern information technology is changing and provides new challenges to health care. The emergence of the Internet and the electronic health record (EHR) has brought new opportunities for patients to play a more active role in his/her care. Although in many countries patients have the right to access their clinical information, access to clinical records electronically is not common. Patient portals consist of provider-tethered applications that allow patients to electronically access health information that are documented and managed by a health care institution. Although patient portals are already being implemented, it is still unclear in which ways these technologies can influence patient care. Objective To systematically review the available evidence on the impact of electronic patient portals on patient care. Methods A systematic search was conducted using PubMed and other sources to identify controlled experimental or quasi-experimental studies on the impact of patient portals that were published between 1990 and 2011. A total of 1,306 references from all the publication hits were screened, and 13 papers were retrieved for full text analysis. Results We identified 5 papers presenting 4 distinct studies. There were no statistically significant changes between intervention and control group in the 2 randomized controlled trials investigating the effect of patient portals on health outcomes. Significant changes in the patient portal group, compared to a control group, could be observed for the following parameters: quicker decrease in office visit rates and slower increase in telephone contacts; increase in number of messages sent; changes of the medication regimen; and better adherence to treatment. Conclusions The number of available controlled studies with regard to patient portals is low. Even when patient portals are often discussed as a way to empower patients and improve quality of care, there is insufficient evidence to support this assumption.

Ammenwerth, Elske; Schnell-Inderst, Petra

2012-01-01

110

Creating content modules for Chinese EHR documents and their trial implementation in Wuwei City.  

PubMed

Numerous and diverse paper-based health record documents are currently used in China, which are not only different from each other but are also inconsistent with national regulations. If these documents are made to be structured and electronically available, the health records information can be processed by computers to promote a shareable electronic health record (EHR) across organizations. As such, this work was intended to develop a set of content modules to be employed as reusable building blocks for converting the paper-based health records to structured EHR documents. Therefore, in this study, we developed 77 content modules based on the documents of national specifications and implemented them to Wuwei City as a trial. According to the EHR requirements of Wuwei, we added two new content modules in addition to the 77 existing content modules. We then successfully established an EHR system based on the new content modules in combination with the original content modules. This paper could contribute to the construction of structured Chinese EHR documents and provide some experiences as a reference for building EHR systems. PMID:22399068

Yang, Peng; Pan, Feng; Xu, Yongyong; Liu, Danhong; Liang, Ying; Yang, Zhe; Sun, Caihong; Ye, Qing

2012-03-08

111

Risks, Barriers, and Benefits of EHR Systems: A Comparative Study Based on Size of Hospital  

PubMed Central

With the government backing the concept of electronic health records (EHR), and with technology being used in every walk of life, more and more hospitals are looking into implementing EHR systems. A national survey of U.S. hospitals was conducted in February/March 2005 to identify the status of EHR systems in hospitals regarding the core functionalities implemented (as identified by the Institute of Medicine), and to determine the perceived benefits, risks, and barriers to adoption of EHR systems in relation to the size of the hospital. The results showed that 37 percent of the hospitals that participated had some components in all of the core functionalities of an EHR system, while 27 percent were using at least some of the core functionalities. There was a significant relationship in some of the perceived benefits and barriers to adoption of EHR systems based on the size of the hospital. With regard to perceived benefits, a large correlation was found between the “medical staff's work efficiency and time management” and size of the hospital. As to perceived barriers to adoption, the cost of hardware and the size of the hospital were interwoven.

Thakkar, Minal; Davis, Diane C

2006-01-01

112

Reagents Data Portal Antibodies  

Cancer.gov

NCI announces the release of monoclonal antipeptide antibodies from rabbit for distribution on the antibody portal. There are 60 recently added monoclonal antibodies, with 56 generated from mouse and 4 generated from rabbit.

113

New ICPP Portal Monitor.  

National Technical Information Service (NTIS)

A large area gas filled proportional-detector portal monitor mounted in a swinging door frame has been designed and developed at the Idaho Chemical Processing Plant (ICPP). This monitor extends the sensitivity and speed of personnel contamination detectio...

M. A. Georgeson C. E. Nichols

1981-01-01

114

Pregnancy and Portal Hypertension  

Microsoft Academic Search

Pregnancy is a normal physiological state characterized by numerous hemodynamic changes. These hemodynamic changes, although\\u000a necessary for a normal pregnancy, pose a special problem in the presence of portal hypertension. In North America, cirrhosis\\u000a of the liver is the most common cause of portal hypertension. Although rare, the occurrence of pregnancy is not altogether\\u000a unknown in this population. This is

Bimaljit Sandhu; Arun J. Sanyal

115

8. EAST PORTAL AND DECK VIEW, FROM EAST, SHOWING PORTAL ...  

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

8. EAST PORTAL AND DECK VIEW, FROM EAST, SHOWING PORTAL CONFIGURATION AND LATERAL BRACING, STEEL MESH FLOOR, METAL RAILINGS, AND PORTION OF EAST APPROACH - Glendale Road Bridge, Spanning Deep Creek Lake on Glendale Road, McHenry, Garrett County, MD

116

7. WEST PORTAL AND DECK VIEW, FROM WEST, SHOWING PORTAL ...  

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

7. WEST PORTAL AND DECK VIEW, FROM WEST, SHOWING PORTAL CONFIGURATION AND LATERAL BRACING, STEEL MESH FLOOR, AND METAL RAILINGS - Glendale Road Bridge, Spanning Deep Creek Lake on Glendale Road, McHenry, Garrett County, MD

117

Elevation, west portal. Sign on portal reads Watson Mill Bridge, ...  

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

Elevation, west portal. Sign on portal reads Watson Mill Bridge, est. 1885. - Watson Mill Bridge, Spanning South Fork Broad River, Watson Mill Road, Watson Mill Bridge State Park, Comer, Madison County, GA

118

14. SOUTHEAST PORTAL, FROM SOUTHEAST, SHOWING INCLINED ENDPOSTS, SOUTHEAST PORTAL ...  

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

14. SOUTHEAST PORTAL, FROM SOUTHEAST, SHOWING INCLINED ENDPOSTS, SOUTHEAST PORTAL STRUT, BRIDGE PLATE, AND OVERHEAD STRUTS AND BRACING - Virginia Department of Transportation Bridge No. 6023, Spanning Norfolk Southern tracks at State Route 646, Nokesville, Prince William County, VA

119

The NOAO NVO Portal  

NASA Astrophysics Data System (ADS)

The NOAO NVO Portal is a web application for one-stop discovery, analysis, and access to VO-compliant imaging data and services. The current release allows for GUI-based discovery of nearly a half million images from archives such as the NOAO Science Archive, the Hubble Space Telescope WFPC2 and ACS instruments, XMM-Newton, Chandra, and ESO's INT Wide-Field Survey, among others. The NOAO Portal allows users to view image metadata, footprint wire-frames, FITS image previews, and provides one-click access to science quality imaging data throughout the entire sky via the Firefox web browser (i.e., no applet or code to download). Users can stage images from multiple archives at the NOAO NVO Portal for quick and easy bulk downloads. The NOAO NVO Portal also provides simplified and direct access to VO analysis services, such as the WESIX catalog generation service. We highlight the features of the NOAO NVO Portal (http://nvo.noao.edu).

Miller, C. J.; Gasson, D.; Fuentes, E.

2007-10-01

120

Clinical pharmacology of portal hypertension.  

PubMed

Portal hypertension is an increase in pressure in the portal vein and its tributaries. It is defined as a portal pressure gradient (the difference in pressure between the portal vein and the hepatic veins) greater than 5 mm Hg. Although this gradient defines portal hypertension, a gradient of 10 mm Hg or greater defines clinically significant portal hypertension, because this pressure gradient predicts the development of varices, decompensation of cirrhosis, and hepatocellular carcinoma. The most direct consequence of portal hypertension is the development of gastroesophageal varices that may rupture and lead to the development of variceal hemorrhage. This article reviews the pathophysiologic bases of the different pharmacologic treatments for portal hypertension in patients with cirrhosis and places them in the context of the natural history of varices and variceal hemorrhage. PMID:20951924

Miñano, Cecilia; Garcia-Tsao, Guadalupe

2010-09-01

121

Clinical Manifestations of Portal Hypertension  

PubMed Central

The portal hypertension is responsible for many of the manifestations of liver cirrhosis. Some of these complications are the direct consequences of portal hypertension, such as gastrointestinal bleeding from ruptured gastroesophageal varices and from portal hypertensive gastropathy and colopathy, ascites and hepatorenal syndrome, and hypersplenism. In other complications, portal hypertension plays a key role, although it is not the only pathophysiological factor in their development. These include spontaneous bacterial peritonitis, hepatic encephalopathy, cirrhotic cardiomyopathy, hepatopulmonary syndrome, and portopulmonary hypertension.

Al-Busafi, Said A.; McNabb-Baltar, Julia; Farag, Amanda; Hilzenrat, Nir

2012-01-01

122

Model Development for EHR Interdisciplinary Information Exchange of ICU Common Goals  

PubMed Central

Purpose Effective interdisciplinary exchange of patient information is an essential component of safe, efficient, and patient–centered care in the intensive care unit (ICU). Frequent handoffs of patient care, high acuity of patient illness, and the increasing amount of available data complicate information exchange. Verbal communication can be affected by interruptions and time limitations. To supplement verbal communication, many ICUs rely on documentation in electronic health records (EHRs) to reduce errors of omission and information loss. The purpose of this study was to develop a model of EHR interdisciplinary information exchange of ICU common goals. Methods The theoretical frameworks of distributed cognition and the clinical communication space were integrated and a previously published categorization of verbal information exchange was used. 59.5 hours of interdisciplinary rounds in a Neurovascular ICU were observed and five interviews and one focus group with ICU nurses and physicians were conducted. Results Current documentation tools in the ICU were not sufficient to capture the nurses' and physicians' collaborative decision-making and verbal communication of goal-directed actions and interactions. Clinicians perceived the EHR to be inefficient for information retrieval, leading to a further reliance on verbal information exchange. Conclusion The model suggests that EHRs should support: 1) Information tools for the explicit documentation of goals, interventions, and assessments with synthesized and summarized information outputs of events and updates; and 2) Messaging tools that support collaborative decision-making and patient safety double checks that currently occur between nurses and physicians in the absence of EHR support.

Collins, Sarah A.; Bakken, Suzanne; Vawdrey, David K.; Coiera, Enrico; Currie, Leanne

2010-01-01

123

The EBI enzyme portal  

PubMed Central

The availability of comprehensive information about enzymes plays an important role in answering questions relevant to interdisciplinary fields such as biochemistry, enzymology, biofuels, bioengineering and drug discovery. At the EMBL European Bioinformatics Institute, we have developed an enzyme portal (http://www.ebi.ac.uk/enzymeportal) to provide this wealth of information on enzymes from multiple in-house resources addressing particular data classes: protein sequence and structure, reactions, pathways and small molecules. The fact that these data reside in separate databases makes information discovery cumbersome. The main goal of the portal is to simplify this process for end users.

Alcantara, Rafael; Onwubiko, Joseph; Cao, Hong; de Matos, Paula; Cham, Jennifer A.; Jacobsen, Jules; Fischer, Julia D.; Rahman, Syed Asad; Jassal, Bijay; Goujon, Mikael; Rowland, Francis; Velankar, Sameer; Lopez, Rodrigo; Overington, John P.; Kleywegt, Gerard J.; Hermjakob, Henning; O'Donovan, Claire; Martin, Maria Jesus; Thornton, Janet M.; Steinbeck, Christoph

2013-01-01

124

Plant Genome Research Outreach Portal  

NSDL National Science Digital Library

Based at the Iowa State University, the mission of the Plant Genome Research Outreach Portal (PGROP) is "to provide a centralized access point for location plant genome research outreach activities, programs and resources." The site contains fact sheets, lesson plans, and other materials for students and educators, including specifically themed resources on crops like maize, rice, sorghum, soybeans, and wheat. On the right-hand side of the page, visitors can use the "New and Noteworthy" area which contains links to genome databases like the Maize Genetics & Genomics database and the helpful "Fast Plants" website. Also, the "Resources Concerning" area includes peer-vetted links organized by topics like bioinformatics, genomics, molecular biology, and DNA. Finally, the site also contains the detailed report of the National Plant Genome Initiative.

125

An approach for the semantic interoperability of ISO EN 13606 and OpenEHR archetypes.  

PubMed

The communication between health information systems of hospitals and primary care organizations is currently an important challenge to improve the quality of clinical practice and patient safety. However, clinical information is usually distributed among several independent systems that may be syntactically or semantically incompatible. This fact prevents healthcare professionals from accessing clinical information of patients in an understandable and normalized way. In this work, we address the semantic interoperability of two EHR standards: OpenEHR and ISO EN 13606. Both standards follow the dual model approach which distinguishes information and knowledge, this being represented through archetypes. The solution presented here is capable of transforming OpenEHR archetypes into ISO EN 13606 and vice versa by combining Semantic Web and Model-driven Engineering technologies. The resulting software implementation has been tested using publicly available collections of archetypes for both standards. PMID:20561912

Martínez-Costa, Catalina; Menárguez-Tortosa, Marcos; Fernández-Breis, Jesualdo Tomás

2010-06-01

126

Canada Health Infoway - Towards a National Interoperable Electronic Health Record (EHR) Solution.  

PubMed

Canada Health Infoway Inc. (Infoway) is leading Canada's initiative to develop interoperable electronic health records (EHRs) and accelerate their adoption nationwide. Specifically, Infoway's core business is to invest with its partners-primarily provincial and territorial governments-in the development of robust, interoperable EHR solutions and in their deployment and replication across Canada. This partnership approach produces results faster, more cost-efficiently and more effectively than if any one partner acted alone.This chapter presents a high-level view of Infoway's seven-year plan to have the basic elements of interoperable EHRs in place across 50 percent of Canada by the end of 2009. In particular, the chapter discusses the business and technical approaches that have been developed to pursue Infoway's aggressive goal. These approaches allow individual jurisdictions to deliver local and regional solutions cost-effectively while contributing to a larger, interoperable national system. PMID:16160221

Giokas, Dennis

2005-01-01

127

The Taiwanese method for providing patients data from multiple hospital EHR systems.  

PubMed

Personal Health Record (PHR) systems are growing in popularity and are receiving increased attention from the Biomedical Informatics research community. Information Collection is one PHR research topic and includes system functionality that helps patients retrieve their data from external sources. One of the most potentially useful external sources of information is the data stored in patients' EHRs at medical institutions. PHR systems that support Information Collection from EHR systems are thus interesting to investigate. In this paper we present PHR system that allows patients to receive data from 10 participating hospitals in Taiwan via a USB flash memory device. The overall design goals and architecture for the system are presented. Based on our experiences in designing and implementing the system we propose a three step method for accomplishing Information Collection from EHR systems at medical institutions for similar PHR systems in the future. PMID:21118726

Jian, Wen-Shan; Wen, Hsyien-Chia; Scholl, Jeremiah; Shabbir, Syed Abdul; Lee, Peisan; Hsu, Chien-Yeh; Li, Yu-Chuan

2010-11-29

128

Using OpenEHR in SICTI an electronic health record system for critical medicine  

NASA Astrophysics Data System (ADS)

SICTI is a software tool for registering health records in critical medicine environments. Version 1.0 has been in use since 2003. The Biomedical Engineering Group (Núcleo de Ingeniería Biomédica), with support from the Technological Development Programme (Programa de Desarrollo Tecnológico), decided to develop a new version, to provide an aid for more critical medicine processes, based on a framework which would make the application domain change oriented. The team analyzed three alternatives: to develop an original product based on new research, to base the development on OpenEHR framework, or to use HL7 RIM as the reference model for SICTI. The team opted for OpenEHR. This work describes the use of OpenEHR, its strong and weak points, and states future work perspectives.

Filgueira, R.; Odriazola, A.; Simini, F.

2007-11-01

129

An overview of electronic health record (EHR) implementation framework and impact on health care organizations in malaysia: A case study  

Microsoft Academic Search

This paper explores the electronic health record (EHR) implementation process as well as application and utilization impact within two selected healthcare institutions in Malaysia using a case study approach. Data were collected through observations and a series of interviews with the hospitals' IT administrators and health practitioners. The results are presented in the form of descriptive analysis of the EHR

N. S. A. Karim; M. Ahmad

2010-01-01

130

Portal venous occlusion  

Microsoft Academic Search

Summary Morbidly obese patients are significantly more susceptible to clotting phenomena, including recurrent deep venous thrombosis, pulmonary emboli, inferior vena caval thrombosis, and renal vein thrombosis. The patient described in this report developed the sudden onset of massive ascites two years following jejunoileal bypass for morbid obesity. Occlusion of the portal vein and its tributaries was demonstrated. Our experience and

Richard Metz; Robert Gray; Leonard Goldstein

1978-01-01

131

USNO Eclipse Portal  

NSDL National Science Digital Library

The United States Naval Observatory (USNO) Eclipse Portal provides information on all solar and lunar eclipses from 1501 through 2100. Users can enter a year in the search box and access information on all eclipses for that year, including global visibility maps, animations, and local circumstances for a selection of locations.

132

Portal film technique charts  

Microsoft Academic Search

A method to produce consistent radiographic density in portal film images is described. The exposure required to produce the desired film density can be calculated on the basis of tissue depth dose data. The required exposure is tabulated as a function of patient thickness, field size, and air gap between the patient and the cassette. The table, referred to as

Ronald T. Droege; Thomas K. Stefanakos

1985-01-01

133

Total portal robotic pneumonectomy.  

PubMed

Robotic pulmonary lobectomies have been reported to be technically and oncologically achievable; however, only three robotic pneumonectomy cases have been described. Two of them used a mini thoracotomy. We describe one case of a total portal robotic pneumonectomy without utility incision. We describe the step-by-step process. PMID:22983819

Rodriguez, Jose R

2012-09-15

134

NCAR Community Data Portal  

NSDL National Science Digital Library

The Community Data Portal (CDP) is a collection of earth science datasets and applications from NCAR, UCAR, UOP, and participating organizations in the following research areas: oceanic, atmospheric, space weather, and turbulence. CDP provides an easy to use interface for finding, downloading and analyzing scientific datasets. CDP is an NCAR strategic initiative funded by the National Science Foundation.

Middleton, Don; Cinquini, Luca

2003-06-19

135

Posttraumatic Portal Venous Gas  

Microsoft Academic Search

Portal venous gas (PVG) is a rare condition that can occur after blunt abdominal trauma. The case of a young boy with PVG after a car crash is reported. The boy died after surgery because of major posttraumatic bowel necrosis. The aim of this article is to show that PVG can be a serious condition after blunt abdominal trauma in

Christophe Laplace; Emil Nini; Denis Pezet; Alain Tanguy

2005-01-01

136

Science and Industry Portal  

NSDL National Science Digital Library

One of a number of Websites offered by the Australian Commonwealth Government, the Science and Industry Portal, like its cousins, the Agriculture Gateway and the Business Entry Point, offers easy access to a wealth of government information and agencies. The site is divided into two main sections, one for science-oriented resources, the other for resources devoted to technology. Within each section, numerous subsections (e.g., directories and databases, policy, intellectual property) and brief annotations make it easy to drill down to find relevant sites (external sites open in a new browser window). The Science and Industry Portal should be a boon to researchers and industry professionals who work in (or are interested in working in) Australia as well as those living elsewhere who want information on the state of their industry sector or research interests in Australia. Plans are to expand the range of the site as funds become available. Links to the business and agriculture portals are available off of the front page of the Science and Industry Portal.

2001-01-01

137

Cognitive Analysis of a Highly Configurable Web 2.0 EHR Interface.  

PubMed

We summarize findings of one case from initial in-lab usability and cognitive tests of 13 clinicians using MedWISE, a widget-based electronic health record (EHR) interface, to familiarize themselves with real patient cases and verbalize their assessment and plan. Multiple methods were used to examine patterns of use, time taken, use of new functionality, user-created interfaces, and diagnostic and human-computer interaction processes. All clinicians learned MedWISE quickly, most used more than half the new functionalities and found MedWISE easy to use and useful. We discuss implications for the design of future EHRs. PMID:21347075

Senathirajah, Yalini; Kaufman, David; Bakken, Suzanne

2010-11-13

138

Knowledge portal: a tool to capture university requirements  

NASA Astrophysics Data System (ADS)

New technologies, especially, the Internet have made a huge impact on knowledge management and information dissemination in education. The web portal as a knowledge management system is very popular topics in many organizations including universities. Generally, a web portal defines as a gateway to online network accessible resources through the intranet, extranet or Internet. This study develops a knowledge portal for the students in the Faculty of Computer Science and Information Technology (FCSIT), University of Malaya (UM). The goals of this portal are to provide information for the students to help them to choose the right courses and major that are relevant to their intended future jobs or career in IT. A quantitative approach used as the selected method for this research. Quantitative method provides an easy and useful way to collect data from a large sample population.

Mansourvar, Marjan; Binti Mohd Yasin, Norizan

2011-10-01

139

Serial measurement of portal hemodynamics after partial portal decompression.  

PubMed

In a serial analysis of splanchnic hemodynamics, we compared partial with total portal decompression in 16 alcoholic cirrhotic patients who underwent portacaval shunts for variceal hemorrhage. Partial decompression was achieved with 8 or 10 mm polytetrafluorethylene portacaval H grafts and aggressive collateral ligation. Total decompression was achieved with larger diameter H grafts (12 or 14 mm). Early and follow-up (mean interval, 18 months) postoperative studies of portal hemodynamics included: direct measurement of shunt gradients, scintigraphic quantitation of portal and mesenteric flow distribution to the liver, and a portal and splenic collateral scoring system developed from standardized splenic venography. Partial portal decompression reduced portal pressure by 43% +/- 8% compared with 81% +/- 5% after total decompression (p less than 0.01). Scintigraphy demonstrated that partial decompression provided a greater fraction of portal flow to the liver than did total decompression (57% +/- 9% versus 2% +/- 1% intrahepatic radioactivity) and mesenteric flow distribution (14.5% +/- 5.4% versus 1.2% +/- 0.7%). Only one patient with partial decompression had a significant loss of portal perfusion during the interval studies. Significantly more residual collaterals were visualized in patients with partial decompression than in those with total decompression, and interval studies showed no significant changes from early studies. We conclude that partial decompression maintains higher portal pressures, more residual collaterals, and a greater fraction of portal and mesenteric flow to the liver than does total decompression. A modest but uniform reduction of portal pressure minimizes stimulus for new collateral formation and further shunting of portal flow. PMID:3726761

Sarfeh, I J; Rypins, E B; Raiszadeh, M; Milne, N; Conroy, R M; Lyons, K P

1986-07-01

140

Developing an electronic health record (EHR) for methadone treatment recording and decision support  

PubMed Central

Background In this paper, we give an overview of methadone treatment in Ireland and outline the rationale for designing an electronic health record (EHR) with extensibility, interoperability and decision support functionality. Incorporating several international standards, a conceptual model applying a problem orientated approach in a hierarchical structure has been proposed for building the EHR. Methods A set of archetypes has been designed in line with the current best practice and clinical guidelines which guide the information-gathering process. A web-based data entry system has been implemented, incorporating elements of the paper-based prescription form, while at the same time facilitating the decision support function. Results The use of archetypes was found to capture the ever changing requirements in the healthcare domain and externalises them in constrained data structures. The solution is extensible enabling the EHR to cover medicine management in general as per the programme of the HRB Centre for Primary Care Research. Conclusions The data collected via this Irish system can be aggregated into a larger dataset, if necessary, for analysis and evidence-gathering, since we adopted the openEHR standard. It will be later extended to include the functionalities of prescribing drugs other than methadone along with the research agenda at the HRB Centre for Primary Care Research in Ireland.

2011-01-01

141

A Correlational Analysis: Electronic Health Records (EHR) and Quality of Care in Critical Access Hospitals  

ERIC Educational Resources Information Center

|Driven by the compulsion to improve the evident paucity in quality of care, especially in critical access hospitals in the United States, policy makers, healthcare providers, and administrators have taken the advise of researchers suggesting the integration of technology in healthcare. The Electronic Health Record (EHR) System composed of…

Khan, Arshia A.

2012-01-01

142

Opportunities to Increase the Effectiveness of EHR-Based Diabetes Clinical Decision Support  

PubMed Central

There are many opportunities to improve diabetes care through more effective use of EHR-based CDS. The report of Kantor et al. [16] is encouraging because it demonstrates sustained efforts by leading health care organizations to implement diabetes-related EHR-based CDS. However, lack of sophisticated treatment-specific CDS and lack of prioritized recommendations are a cause for concern. Even more disturbing is the substantive heterogeneity in content of diabetes CDS recommendations now in the field. Some of CDS recommendations described by Kantor et al. [16] are clearly not evidence-based and could increase costs while not improving clinical benefits. The timely identification of these problems is an awkward but necessary first step towards improvement. The health care organizations that are pioneers in the field should be congratulated and encouraged to continue their collaborative efforts to increase the efficiency and effectiveness of EHR-based CDS. Attending to the modest proposals put forward here and by others may help translate the massive investments that we have made in EHR technology into clinical benefits for our patients.

O'Connor, P.

2011-01-01

143

A SNOMED supported ontological vector model for subclinical disorder detection using EHR similarity  

Microsoft Academic Search

Electronic Health Records (EHR) form a valuable resource in the healthcare enterprise because clinical evidence can be provided to identify potential complications and support decisions on early intervention. Simple string matching, the common search algorithm, is not able to map a query to the similar health records in the database with respect to the medical concepts. A novel ontological vector

L. W. C. Chan; Y. Liu; C. R. Shyu; I. F. F. Benzie

2011-01-01

144

A patient centered care plan in the EHR: improving collaboration and engagement.  

PubMed

Patients attempting to manage their chronic conditions require ongoing support in changing and adopting self-management behaviors. However, patient values, health goals, and action plans are not well represented in the electronic health record (EHR) impeding the ability of the team (MA and providers) to provide respectful, ongoing self-management support. We evaluated whether a team approach to using an EHR based patient centered care plan (PCCP) improved collaborative self-management planning. An experimental, prospective cohort study was conducted in a family medicine residency clinic. The experimental group included 7 physicians and a medical assistant who received 2 hr of PCCP training. The control group consisted of 7 physicians and a medical assistant. EHR charts were analyzed for evidence of 8 behavior change elements. Follow-up interviews with experimental group patients and physicians and the medical assistant assessed their experiences. We found that PCCP charts had more documented behavior change elements than control charts in all 8 domains (p < .001). Experimental group physicians valued the PCCP model and suggested ways to improve its use. Patient feedback demonstrated support for the model. A PCCP can help team members to engage patients with chronic illnesses in goal setting and action planning to support self-management. An EHR design that stores patient values, health goals, and action plans may strengthen continuity and quality of care between patients and primary care team members. (PsycINFO Database Record (c) 2012 APA, all rights reserved). PMID:22866953

Chunchu, Kavitha; Mauksch, Larry; Charles, Carol; Ross, Valerie; Pauwels, Judith

2012-08-06

145

Still seeking the legal EHR. The push for electronic records increases, the record management questions remain.  

PubMed

Electronic health records are edging into the mainstream, but they still have one foot outside the law. Many EHR systems struggle to create credible and compliant business records, and with major initiatives like the ARRA incentive program pushing their adoption, now is the time to get the electronic legal record right. PMID:20218196

Dougherty, Michelle; Washington, Lydia

2010-02-01

146

Facilitating secondary use of medical data by using openEHR archetypes.  

PubMed

Clinical trials are of high importance for medical progress. But even though more and more clinical data is available in electronic patient records (EPRs) and more and more electronic data capture (EDC) systems are used in trials, there is still a gap which makes EPR / EDC interoperability difficult and hampers secondary use of medical routine data. The openEHR architecture for Electronic Health Records is based on a two level modeling approach which makes use of 'archetypes'. We want to analyze whether archetypes can help to bridge this gap by building an integrated EPR / EDC system based on openEHR archetypes. We used the 'openEHR Reference Framework and Application' (Opereffa) and existing archetypes for medical data. Furthermore, we developed dedicated archetypes to document study meta data. We developed a first prototype implementation of an archetype based integrated EPR / EDC system. Next steps will be the evaluation of an extended prototype in a real clinical trial scenario. Opereffa was a good starting point for our work. OpenEHR archetypes proved useful for secondary use of health data. PMID:20841857

Kohl, Christian D; Garde, Sebastian; Knaup, Petra

2010-01-01

147

A business case for HIT adoption: effects of "meaningful use" EHR financial incentives on clinic revenue.  

PubMed

The goal of this study is to describe a framework that allows decision makers to efficiently evaluate factors that affect Electronic Health Record (EHR) adoption and test suitable interventions; specifically financial incentives. The United States healthcare delivery system is experiencing a transformation to improve population health. There is strong agreement that "meaningful use" of Health Information Technology (HIT) is a major enabler in this effort. However it's also understood that the high cost of implementing an EHR is an obstacle for adoption. To help understand these complexities we developed a simulation model designed to capture the dynamic nature of policy interventions that affect the adoption of EHR. We found that "Effective" use of HIT approaches break-even-point and larger clinic revenue many times faster that "average" or "poor" use of HIT. This study uses a systems perspective to the evaluate EHR adoption process through the "meaningful use" redesign as proposed in the American Reinvestment and Recovery Act 2009 in the United States healthcare industry by utilizing the System Dynamics methodology and Scenario Analysis. PMID:20841792

Behkami, Nima A; Dorr, David A; Morrice, Stuart

2010-01-01

148

e-HR and Employee Self Service: A Case Study of a Victorian Public Sector Organisation  

Microsoft Academic Search

The application of the internet to the Human Resource function (e-HR) combines two elements: one is the use of electronic media whilst the other is the active participation of employees in the process. These two elements drive the technology that helps organisations lower administration costs, improve employee communication and satisfaction, provide real time access to information while at the same

Paul Hawking; Andrew Stein

149

Small Practice, Big Decision: Selecting an EHR System for Small Physician Practices  

Microsoft Academic Search

Purchasing an electronic health record (EHR) system is probably one of the most important decisions a small physician practice will make. The systems require major investments of time and money, and they bring fundamental change to the practice's clinical and business processes. Automation has a significant impact on all aspects of a physician practice; it literally alters the way healthcare

Suzanne Columbus

150

The Taiwanese method for providing patients data from multiple hospital EHR systems  

Microsoft Academic Search

Personal Health Record (PHR) systems are growing in popularity and are receiving increased attention from the Biomedical Informatics research community. Information Collection is one PHR research topic and includes system functionality that helps patients retrieve their data from external sources. One of the most potentially useful external sources of information is the data stored in patients’ EHRs at medical institutions.

Wen-Shan Jian; Hsyien-Chia Wen; Jeremiah Scholl; Syed Abdul Shabbir; Peisan Lee; Chien-Yeh Hsu; Yu-Chuan Li

2011-01-01

151

Effect of Portal Venous Blood Flow Diversion on Portal Pressure  

PubMed Central

To anticipate the hepatic vascular response to portacaval anastomosis, we studied portal pressure during diversion of portal blood through a temporary extracorporeal umbilical vein to saphenous vein shunt. The relationship of portal pressure to shunted flow was approximately linear. In five schistosomiasis patients (controls) portal diversion to 1,250 ml/min gave portal pressure-shunted flow curve slopes ranging from 0.13 to 0.57 cm water/100 ml per min (0.31±0.18, mean±SD). In 17 cirrhotic patients with portal hypertension a continuum of slopes was observed from within mean±2 SD of control (type A) to larger slopes (type B) indicating failure of portal pressure regulation. When portal flow was augmented by shunting from saphenous vein to portal vein, cirrhotic patients who had slopes less than mean±2 SD of controls during diversion (type A) exhibited a compliant system with small increases in portal pressure, whereas type B patients had significantly greater pressure increases. Selective investigations suggested that changes in portal pressure provoked compensatory changes in hepatic arterial blood flow that tended to maintain portal pressure at a set point. Type B patients demonstrated failure of this mechanism to varying degrees. After end-to-side portacaval shunt, seven type A cirrhotic patients maintained residual intrahepatic venous pressure unchanged from prior portal pressure, whereas six type B patients had a significant decrease. Residual intrahepatic venous pressure was measured after portacaval shunt in 40 cirrhotic patients who were followed for as long as 9 yr (median survival 4.0 yr). The 13 patients who developed chronic encephalopathy had significantly lower pressure (21.1±4.4 cm, mean±SD) and shorter survival (median 0.6 yr) than the other 27 patients (32.6±5.3 cm, 5.0 yr). The preoperative estimation of portal pressure-diverted portal flow curve slope anticipates the hepatic vascular response to portacaval anastomosis and identifies a group of patients in whom loss of portal blood flow results in a low residual intrahepatic venous pressure that is associated with early death and chronic encephalopathy.

Zimmon, David S.; Kessler, Richard E.

1980-01-01

152

The Portal Project  

Microsoft Academic Search

Palladia, Inc. is a not-for-profit, multi-service agency, located in New York City, serving primarily African-American and Latino communities. Palladia's Portal Project, in collaboration with the evaluation team from Hunter College School of Social Work (HCSSW), participated in the national Women, Co-Occurring Disorders and Violence study. We studied 270 women with co-occurring issues of alcohol and other drug (AOD) problems and

Sharon Cadiz; Andrea Savage; Diane Bonavota; James Hollywood; Erica Butters; Michelle Neary; Laura Quiros

2005-01-01

153

CDAPubMed: a browser extension to retrieve EHR-based biomedical literature  

PubMed Central

Background Over the last few decades, the ever-increasing output of scientific publications has led to new challenges to keep up to date with the literature. In the biomedical area, this growth has introduced new requirements for professionals, e.g., physicians, who have to locate the exact papers that they need for their clinical and research work amongst a huge number of publications. Against this backdrop, novel information retrieval methods are even more necessary. While web search engines are widespread in many areas, facilitating access to all kinds of information, additional tools are required to automatically link information retrieved from these engines to specific biomedical applications. In the case of clinical environments, this also means considering aspects such as patient data security and confidentiality or structured contents, e.g., electronic health records (EHRs). In this scenario, we have developed a new tool to facilitate query building to retrieve scientific literature related to EHRs. Results We have developed CDAPubMed, an open-source web browser extension to integrate EHR features in biomedical literature retrieval approaches. Clinical users can use CDAPubMed to: (i) load patient clinical documents, i.e., EHRs based on the Health Level 7-Clinical Document Architecture Standard (HL7-CDA), (ii) identify relevant terms for scientific literature search in these documents, i.e., Medical Subject Headings (MeSH), automatically driven by the CDAPubMed configuration, which advanced users can optimize to adapt to each specific situation, and (iii) generate and launch literature search queries to a major search engine, i.e., PubMed, to retrieve citations related to the EHR under examination. Conclusions CDAPubMed is a platform-independent tool designed to facilitate literature searching using keywords contained in specific EHRs. CDAPubMed is visually integrated, as an extension of a widespread web browser, within the standard PubMed interface. It has been tested on a public dataset of HL7-CDA documents, returning significantly fewer citations since queries are focused on characteristics identified within the EHR. For instance, compared with more than 200,000 citations retrieved by breast neoplasm, fewer than ten citations were retrieved when ten patient features were added using CDAPubMed. This is an open source tool that can be freely used for non-profit purposes and integrated with other existing systems.

2012-01-01

154

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

155

8. Detail, skewed portal bracing at west portal, also showing ...  

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

8. Detail, skewed portal bracing at west portal, also showing boxed endposts, latticed upper transverse and diagonal sway bracing, laced vertical members, view to northeast, 210mm lens. - Southern Pacific Railroad Shasta Route, Bridge No. 301.85, Milepost 301.85, Pollard Flat, Shasta County, CA

156

BioPortal: A Web Portal to Biomedical Ontologies  

Microsoft Academic Search

Ontologies are becoming critical to e-Science, but there are challenges for the community to find the ontologies relevant to their work, to declare mappings among related ontolo- gies, and to provide feedback or critiques to ontology devel- opers. We have created BioPortal, a Web portal to a virtual library of ontologies on the Semantic Web and a tool set enabling

Daniel L. Rubin; Dilvan A. Moreira; Pradip P. Kanjamala; Mark A. Musen

2007-01-01

157

Analysis of Clinical Record Data for Anticoagulation Management within an EHR System  

PubMed Central

Objectives: This paper reports an evaluation of the properties of a generic electronic health record information model that were actually required and used when importing an existing clinical application into a generic EHR repository. Method: A generic EHR repository and system were developed as part of the EU Projects Synapses and SynEx. A Web application to support the management of anticoagulation therapy was developed to interface to the EHR system, and deployed within a north London hospital with five years of cumulative clinical data from the previous existing anticoagulation management application. This offered the opportunity to critique those parts of the generic EHR that were actually needed to represent the legacy data. Results: The anticoagulation records from 3,226 patients were imported and represented using over 900,000 Record Components (i.e. each patient’s record contained on average 289 nodes), of which around two thirds were Element Items (i.e. value-containing leaf nodes), the remainder being container nodes (i.e. headings and sub-headings). Each node is capable of incorporating a rich set of context properties, but in reality it was found that many properties were not used at all, and some infrequently (e.g. only around 0.5% of Record Components had ever been revised). Conclusions: The process of developing generic EHR information models, arising from research and embodied within new-generation interoperability standards and specifications, has been strongly driven by requirements. These requirements have been gathered primarily by collecting use cases and examples from clinical communities, and been added to successive generations of these models. A priority setting approach has not to date been pursued - all requirements have been received and almost invariably met. This work has shown how little of the resulting model is actually needed to represent useful and usable clinical data. A wider range of such evaluations, looking at different kinds of existing clinical system, is needed to balance the theoretical requirements gathering processes, in order to result in EHR information models of an ideal level of complexity.

Austin, T; Kalra, D; Lea, N.C; Patterson, D.L.H; Ingram, D

2009-01-01

158

Does a Personalized Health Portal for Diabetes Retinal Imaging Positively Affect Motivational Readiness to Change.  

National Technical Information Service (NTIS)

The transtheoretical model (TTM) of behavior change has been used successfully to describe explain and predict clinical outcomes in patients with type 2 diabetes (T2D) exposed to various educational interventions. The personalized health portal allows pat...

D. B. Peters K. Connolly

2010-01-01

159

BESC knowledgebase public portal  

PubMed Central

The BioEnergy Science Center (BESC) is undertaking large experimental campaigns to understand the biosynthesis and biodegradation of biomass and to develop biofuel solutions. BESC is generating large volumes of diverse data, including genome sequences, omics data and assay results. The purpose of the BESC Knowledgebase is to serve as a centralized repository for experimentally generated data and to provide an integrated, interactive and user-friendly analysis framework. The Portal makes available tools for visualization, integration and analysis of data either produced by BESC or obtained from external resources. Availability: http://besckb.ornl.gov Contact: syedmh@ornl.gov

Syed, Mustafa H.; Karpinets, Tatiana V.; Parang, Morey; Leuze, Michael R.; Park, Byung H.; Hyatt, Doug; Brown, Steven D.; Moulton, Steve; Galloway, Michael D.; Uberbacher, Edward C.

2012-01-01

160

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

161

Management of portal hypertension  

PubMed Central

Treatment of portal hypertension is evolving based on randomised controlled trials. In acute variceal bleeding, prophylactic antibiotics are mandatory, reducing mortality as well as preventing infections. Terlipressin or somatostatin combined with endoscopic ligation or sclerotherapy is the best strategy for control of bleeding but there is no added effect of vasoactive drugs on mortality. Non-selective ß-blockers are the first choice therapy for both secondary and primary prevention; if contraindications or intolerance to ß-blockers are present then band ligation should be used. Novel therapies target the increased intrahepatic resistance caused by microcirculatory intrahepatic deficiency of nitric oxide and contraction of activated intrahepatic stellate cells.

Samonakis, D; Triantos, C; Thalheimer, U; Patch, D; Burroughs, A

2004-01-01

162

The Gloobal Internet Portal Experience  

Microsoft Academic Search

The Gloobal Internet cooperation portal (http:\\/\\/www.gloobal.net) was created by the Spanish organization Iepala (Institute of Studies for Latin America and Africa) in 2005. Gloobal is an integrated system of information and communication whose aim is being a strategic resource at the service of development and social inclusion. The portal's main aim is to create an independent and innovative space for

Emiliano Trerè

2008-01-01

163

Investigating online community portals for enhanced alumni networking  

Microsoft Academic Search

Purpose – The core purpose of this study was to determine the extent to which web portal technology and online communities could be successfully applied by the alumni offices of higher education institutions in South Africa (using the University of Johannesburg as a case study) to create information-sharing with and amongst its alumni affinity groups, in order to build and

Zenia Barnard; Chris Rensleigh

2008-01-01

164

Portal monitoring technology control process  

SciTech Connect

Portal monitors are an important part of the material protection, control, and accounting (MPC and A) programs in Russia and the US. Although portal monitors are only a part of an integrated MPC and A system, they are an effective means of controlling the unauthorized movement of special nuclear material (SNM). Russian technical experts have gained experience in the use of SNM portal monitors from US experts ad this has allowed them to use the monitors more effectively. Several Russian institutes and companies are designing and manufacturing SNM portal monitors in Russia. Interactions between Russian and US experts have resulted in improvements to the instruments. SNM portal monitor technology has been effectively transferred from the US to Russia and should be a permanent part of the Russian MPC and A Program. Progress in the implementation of the monitors and improvements to how they are used are discussed.

York, R.L.

1998-12-31

165

U.S. Drought Portal  

NSDL National Science Digital Library

The National Integrated Drought Information System was signed into existence in 2006 by President George W. Bush, and it aims to provide guidance in preparing for drought in the 21st century. This official U.S. government web portal is loaded with colorful maps, charts and graphs, and that's just on the homepage. The "U.S. Drought Monitor" is a map on the homepage with the intensity of the drought conditions indicated by color, from abnormally dry to drought - exceptional. On the same map there are links to the answers to the following queries: "Where are Drought Conditions Now?", "How is the Drought Affecting Me?", and "Will the Drought Continue?" The "Education" link on the menu across the top of the page leads visitors to "Drought for General Audiences" and "Drought for K-12 and Above". Visitors interested in helping monitor precipitation in their own communities should check out CoCoRaHS, which is the "Community Collaborative Rain, Hail, and Snow Network". The link to that organization is provided in the "Drought for General Audiences" section.

166

MedWISE: a highly user-configurable 'web 2.0' EHR  

Microsoft Academic Search

Health information systems have extremely complex, variable and changeable information requirements and vendor-controlled development has resulted in systems that frequently neither reflect clinical users' domain knowledge nor meet their needs. 'Web 2.0' approaches have transformed the commercial\\/public internet world. Consequently we created MedWISE, a 'web 2.0' EHR interface which allows users to create, select, configure, and share information, displays and

Yalini Senathirajah; Suzanne H. Bakken

2010-01-01

167

Investigating Incidents of EHR Failures in China: Analysis of Search Engine Reports.  

PubMed

As the healthcare industry becomes increasingly dependent on information technology (IT), the failure of computerized systems could cause catastrophic effects on patient safety. We conducted an empirical study to analyze news articles available on the internet using Baidu and Google. 116 distinct EHR outage news reports were identified. We examined characteristics, potential causes, and possible preventive strategies. Risk management strategies based are discussed. PMID:23920984

Lei, Jianbo; Guan, Pengcheng; Gao, Kaihua; Lu, Xueqing; Sittig, Dean

2013-01-01

168

Optimization of an EHR Mobile Application Using the UFuRT Conceptual Framework  

PubMed Central

Drchrono is an Electronic Healthcare Record (EHR) application designed specifically for the iPad. Described as portable, efficient and accessible anywhere, drchrono has several features that might be attractive to health care providers. However, EHRs have to conform to certain Federal Healthcare Information Technology Guidelines, which are evaluated in a series of 12 test procedures, defined by the Office of the National Coordinator for Health Information Technology (ONC). In this study, we evaluated Test Procedure for §170.302 (c) Maintain up-to-date problem list, in drchrono. The methodology for our evaluation was contained within Zhang’s unified framework for usability, using UFuRT, i.e. user, functional, representation and task analyses. Based upon the analysis, using Adobe Flex, we then designed a prototype that corrected or improved on perceived weaknesses in the functionality served by the test procedure. We applied the test procedure taxonomy to a prototypic modification of drchrono, and then repeated the UFuRT usability analysis. We also used a 14-item heuristic evaluation by each member of our informatics team. Our findings support a conclusion that UFuRT is a valuable tool to evaluate EHR usability and that an “up-to-date problem” list may be customized, according to healthcare provider preference.

Amith, Muhammad; Loubser, Paul G.; Chapman, John; Zoker, Kaafoe C.; Rabelo Ferreira, Fred E. R.

2012-01-01

169

Architectural approach for semantic EHR systems development based on Detailed Clinical Models.  

PubMed

The integrative approach to health information in general and the development of pHealth systems in particular, require an integrated approach of formally modeled system architectures. Detailed Clinical Models (DCM) is one of the most promising modeling efforts for clinical concept representation in EHR system architectures. Although the feasibility of DCM modeling methodology has been demonstrated through examples, there is no formal, generic and automatic modeling transformation technique to ensure a semantic lossless transformation of clinical concepts expressed in DCM to either clinical concept representations based on ISO 13606/openEHR Archetypes or HL7 Templates. The objective of this paper is to propose a generic model transformation method and tooling for transforming DCM Clinical Concepts into ISO/EN 13606/openEHR Archetypes or HL7 Template models. The automation of the transformation process is supported by Model Driven-Development (MDD) transformation mechanisms and tools. The availability of processes, techniques and tooling for automatic DCM transformation would enable the development of intelligent, adaptive information systems as demanded for pHealth solutions. PMID:22942049

Bernal, Juan G; Lopez, Diego M; Blobel, Bernd

2012-01-01

170

Optimization of an EHR mobile application using the UFuRT conceptual framework.  

PubMed

Drchrono is an Electronic Healthcare Record (EHR) application designed specifically for the iPad. Described as portable, efficient and accessible anywhere, drchrono has several features that might be attractive to health care providers. However, EHRs have to conform to certain Federal Healthcare Information Technology Guidelines, which are evaluated in a series of 12 test procedures, defined by the Office of the National Coordinator for Health Information Technology (ONC). In this study, we evaluated Test Procedure for §170.302 (c) Maintain up-to-date problem list, in drchrono. The methodology for our evaluation was contained within Zhang's unified framework for usability, using UFuRT, i.e. user, functional, representation and task analyses. Based upon the analysis, using Adobe Flex, we then designed a prototype that corrected or improved on perceived weaknesses in the functionality served by the test procedure. We applied the test procedure taxonomy to a prototypic modification of drchrono, and then repeated the UFuRT usability analysis. We also used a 14-item heuristic evaluation by each member of our informatics team. Our findings support a conclusion that UFuRT is a valuable tool to evaluate EHR usability and that an "up-to-date problem" list may be customized, according to healthcare provider preference. PMID:23304290

Amith, Muhammad; Loubser, Paul G; Chapman, John; Zoker, Kaafoe C; Rabelo Ferreira, Fred E R

2012-11-03

171

Clinician preferences for verbal communication compared to EHR documentation in the ICU  

PubMed Central

Background Effective communication is essential to safe and efficient patient care. Additionally, many health information technology (HIT) developments, innovations, and standards aim to implement processes to improve data quality and integrity of electronic health records (EHR) for the purpose of clinical information exchange and communication. Objective We aimed to understand the current patterns and perceptions of communication of common goals in the ICU using the distributed cognition and clinical communication space theoretical frameworks. Methods We conducted a focus group and 5 interviews with ICU clinicians and observed 59.5 hours of interdisciplinary ICU morning rounds. Results Clinicians used an EHR system, which included electronic documentation and computerized provider order entry (CPOE), and paper artifacts for documentation; yet, preferred the verbal communication space as a method of information exchange because they perceived that the documentation was often not updated or efficient for information retrieval. These perceptions that the EHR is a “shift behind” may lead to a further reliance on verbal information exchange, which is a valuable clinical communication activity, yet, is subject to information loss. Conclusions Electronic documentation tools that, in real time, capture information that is currently verbally communicated may increase the effectiveness of communication.

Collins, S.A.; Bakken, S.; Vawdrey, D.K.; Coiera, E.; Currie, L

2011-01-01

172

The Hague Justice Portal  

NSDL National Science Digital Library

Initiated by The Hague Academic Coalition and launched by Her Royal Highness Princess Margriet of the Netherlands in 2006, The Hague Justice Portal serves as the online presence of the Hague organizations and their work on issues related to international peace, justice, and security. On the homepage, visitors can get acquainted with their work by perusing the "News" area and also looking over the list of legal events which appears along the right-hand side of the page. The "International Justice Forum" section contains a series of interactive forums designed to facilitate discussion on topics related to international law, and it will be particularly helpful to legal scholars and journalists. Additionally, legal scholars will want to take a look at the current issues of the Hague Justice Journal, which contains articles on sovereignty, victim participation in the legal process, and other related matters. Visitors should also note that many of the materials on the site are available in French and Dutch.

173

NASA Hurricane Data Portal  

NSDL National Science Digital Library

This portal is designed for viewing and studying hurricanes by utilizing measurements and data produced by National Aeronautics and Space Administration (NASA) remote-sensing instruments. Users can access current conditions and information from the Hurricane Data Analysis Tool (formerly the TRMM QuikScat Analysis tool), event-based information (maps and profiles) on active tropical storms or hurricanes, articles on the use of NASA data in hurricane monitoring and research, and archived maps and profiles from past storms. The Hurricane Viewer allows users to animate a hurricane path, showing levels of intensity and atmospheric information occurring at the time of the event. There are also 3-hour rainfall total images generated in near-real time for the Atlantic and Gulf regions by the Giovanni analysis tool.

174

NASA Hurricane Data Portal  

NSDL National Science Digital Library

This portal is designed for viewing and studying hurricanes by utilizing measurements and data produced by National Aeronautics and Space Administration (NASA) remote-sensing instruments. Users can access current conditions information from NASA satellites (TRMM, AIRS, etc.), event-based information (maps and profiles) on active tropical storms or hurricanes, articles on the use of NASA data in hurricane monitoring and research, and archived maps and profiles from past storms. The Hurricane Viewer allows users to animate a hurricane path, showing levels of intensity and atmospheric information occuring at the time of the event. There are also 3-hour rainfall total images generated in near-real time for the Atlantic and Gulf regions by the Giovanni analysis tool.

2010-12-22

175

Portal film technique charts  

SciTech Connect

A method to produce consistent radiographic density in portal film images is described. The exposure required to produce the desired film density can be calculated on the basis of tissue depth dose data. The required exposure is tabulated as a function of patient thickness, field size, and air gap between the patient and the cassette. The table, referred to as a ''technique chart,'' helps to maintain consistent image quality by minimizing the frequency of over and under exposed films. Alternatively, treatment planning software may be modified to determine the film exposure required for a specific patient. The calculated exposures are accurate only if the image receptor employs a sufficiently thick front metal screen, a requirement consistent with optimum image contrast.

Droege, R.T.; Stefanakos, T.K.

1985-11-01

176

Portal film technique charts.  

PubMed

A method to produce consistent radiographic density in portal film images is described. The exposure required to produce the desired film density can be calculated on the basis of tissue depth dose data. The required exposure is tabulated as a function of patient thickness, field size, and air gap between the patient and the cassette. The table, referred to as a "technique chart," helps to maintain consistent image quality by minimizing the frequency of over and under exposed films. Alternatively, treatment planning software may be modified to determine the film exposure required for a specific patient. The calculated exposures are accurate only if the image receptor employs a sufficiently thick front metal screen, a requirement consistent with optimum image contrast. PMID:4055459

Droege, R T; Stefanakos, T K

1985-11-01

177

AgNIC Portal  

NSDL National Science Digital Library

Started in 1995, the Agriculture Network Information Center (AgNIC), is part of a collaborative alliance between various libraries and extension programs at different universities and other institutions. This partnership is designed to bring quality agricultural information to those parties and to the general public as well. Starting at the Center's homepage, visitors can view their featured site, search the entire contents, or look at the portal's features in detail. Visitors can also browse by topic, which include such subjects as entomology, plant science, and rural and agricultural sociology. Within each topic, visitors will find a host of informative resources, such as the proceedings of relevant conferences, plant and insect management guides and notes on how to maintain an optimal environment for dairy cows. Finally, visitors can also browse through a very well-maintained calendar of events and a news center.

178

CzechGeo/EPOS - Building a national data portal  

NASA Astrophysics Data System (ADS)

CzechGeo/EPOS is the consortium of seven geoscience institutions in the Czech Republic (Institute of Geophysics AS CR Prague, Institute of Rock Structure and Mechanics AS CR Prague, Institute of Geonics AS CR Ostrava, Institute of Physics of the Earth, Masaryk University Brno, Faculty of Mathematics and Physics, Charles University Prague, Faculty of Science, Charles University Prague, and Research Institute of Geodesy, Cartography and Topography Zdiby). These institutions operate a distributed system of seismic, GPS, magnetic, gravimetric and geodynamic observatories. The operational and personal costs of CzechGeo/EPOS are mostly covered by the Ministry of education, sports and youth within the support of twelve large research infrastructures in the Czech Republic. Web pages of the project www.czechgeo.cz are being built as a data portal which should integrate all the data and services provided by the involved institutions and research infrastructures. Seismic portal offers selected portions of digital data from permanent, local and temporary seismic stations, locations of seismic events in the country and worldwide, daily seismograms from permanent observatories and local seismic network Webnet, seismic bulletins and catalogs, and macroseismic observations on the territory of the Czech Republic. Magnetic portal involves besides real-time magnetograms also recent state of geomagnetic activity and its forecast for the next day. GPS portal will provide preprocessed data from regional GPS stations. Building the national portal is closely related with the development of the Preparatory phase of the EPOS (European Plate Observing System) project.

Zednik, J.; Hejda, P.

2012-04-01

179

Educational interventions to improve the meaningful use of Electronic Health Records: A review of the literature: BEME Guide No. 29.  

PubMed

Background: Electronic health records (EHRs) are increasingly available and this was expected to reduce healthcare costs and medical errors. This promise has not been realized because healthcare professionals are unable to use EHRs in a manner that contributes to significant improvements in care, i.e. meaningful. Policymakers now acknowledge that training healthcare professionals in meaningful use is essential for successful EHR implementation. To help educators and policymakers design evidence based educational interventions (i.e. interventions that involve educational activities but no practical lessons) and training (i.e. interventions that involve practical components), we summarized all evidence regarding the efficacy of different educational interventions to improve meaningful use of EHRs. Methods: We used a predefined search filter to search eight databases for studies that considered an educational intervention to promote meaningful use of EHRs by healthcare professionals. Results: Seven of the 4507 reviewed articles met the in- and exclusion criteria. Conclusions: These studies suggest that a combination of classroom training, computer-based training and feedback is most effective to improve meaningful use. In addition, the training should be tailored to the needs of the trainees and they should be able to practice in their own time. However, the evidence is very limited and we recommend that governments, hospitals and other policymakers invest more in the development of evidence based educational interventions to improve meaningful use of EHRs. PMID:23848402

Goveia, Jermaine; Van Stiphout, Feikje; Cheung, Zing; Kamta, Bharti; Keijsers, Carolina; Valk, Gerlof; Ter Braak, Edith

2013-07-12

180

MyHealthAtVanderbilt: policies and procedures governing patient portal functionality.  

PubMed

Explicit guidelines are needed to develop safe and effective patient portals. This paper proposes general principles, policies, and procedures for patient portal functionality based on MyHealthAtVanderbilt (MHAV), a robust portal for Vanderbilt University Medical Center. We describe policies and procedures designed to govern popular portal functions, address common user concerns, and support adoption. We present the results of our approach as overall and function-specific usage data. Five years after implementation, MHAV has over 129,800 users; 45% have used bi-directional messaging; 52% have viewed test results and 45% have viewed other medical record data; 30% have accessed health education materials; 39% have scheduled appointments; and 29% have managed a medical bill. Our policies and procedures have supported widespread adoption and use of MHAV. We believe other healthcare organizations could employ our general guidelines and lessons learned to facilitate portal implementation and usage. PMID:21807648

Osborn, Chandra Y; Rosenbloom, S Trent; Stenner, Shane P; Anders, Shilo; Muse, Sue; Johnson, Kevin B; Jirjis, Jim; Jackson, Gretchen Purcell

2011-07-31

181

The Cosmos Portal and the IYA2009 Project  

NASA Astrophysics Data System (ADS)

In 2007 the non-profit Digital Universe Foundation (DUF) launched the Earth Portal (earthportal.org) as a comprehensive resource for timely, objective, science-based information about the environment. There are currently over 1000 scholars from 60 countries engaged in this rapidly growing web-based collaboration. The Cosmos Portal is the second major DUF initiative (cosmosportal.org). In support of the IYA2009 effort, the Cosmos Portal is recruiting astronomy professionals to make use of easy online tools to publish articles, blogs, news items, image galleries, class notes, lectures, powerpoint presentations, links to other high quality websites or other educational material. A major difference between the Digital Universe and Wikipedia is that educational material is produced by identified experts, not anonymous contributors with unknown qualifications. The Digital Universe is a 501(c)(3) public charity whose goal is to evolve into a worldwide online community (a social network) whose centerpiece is an ever growing Asimov-Sagan Encyclopedia Galactica created by experts. We encourage you to write an encylopedia article or start a portal on your favorite topic or join an existing topic as an expert contributor.

Haisch, Bernard M.; Sims, M.; Lindblom, J.

2009-05-01

182

Imaging informatics for consumer health: towards a radiology patient portal.  

PubMed

OBJECTIVE: With the increased routine use of advanced imaging in clinical diagnosis and treatment, it has become imperative to provide patients with a means to view and understand their imaging studies. We illustrate the feasibility of a patient portal that automatically structures and integrates radiology reports with corresponding imaging studies according to several information orientations tailored for the layperson. METHODS: The imaging patient portal is composed of an image processing module for the creation of a timeline that illustrates the progression of disease, a natural language processing module to extract salient concepts from radiology reports (73% accuracy, F1 score of 0.67), and an interactive user interface navigable by an imaging findings list. The portal was developed as a Java-based web application and is demonstrated for patients with brain cancer. RESULTS AND DISCUSSION: The system was exhibited at an international radiology conference to solicit feedback from a diverse group of healthcare professionals. There was wide support for educating patients about their imaging studies, and an appreciation for the informatics tools used to simplify images and reports for consumer interpretation. Primary concerns included the possibility of patients misunderstanding their results, as well as worries regarding accidental improper disclosure of medical information. CONCLUSIONS: Radiologic imaging composes a significant amount of the evidence used to make diagnostic and treatment decisions, yet there are few tools for explaining this information to patients. The proposed radiology patient portal provides a framework for organizing radiologic results into several information orientations to support patient education. PMID:23739614

Arnold, Corey W; McNamara, Mary; El-Saden, Suzie; Chen, Shawn; Taira, Ricky K; Bui, Alex A T

2013-06-01

183

OpenEHR-based representation of guideline compliance data through the example of stroke clinical practice guidelines.  

PubMed

In light of the lack of integration between electronic health records and decision support, this research explores how semantic electronic health record technology, particularly openEHR, can be used to represent clinical practice guidelines (CPGs). We used the tool Visual Understanding Environment (VUE) to build a graphical representation of the European ischaemic stroke clinical management guidelines. We used openEHR archetypes to conceptually support this process and also to represent clinical concepts in stroke treatment compliance criteria. Our results show that, as an intermediate step in authoring computer-interpretable guidelines, an openEHR-based representation of CPGs and their compliance criteria supports the process of identifying the relevant knowledge and data elements in the care process to be modelled. It further eases the separation of the CPGs into data and logic components and is useful as a communication means for guideline verification by clinicians. Additionally, we retrieved existing and authored new openEHR archetypes for the acute stroke clinical management process. We conclude that openEHR-based guideline and compliance data representations may be a promising first step in building future decision support applications that are well connected to the electronic health record, can be useful in locating discrepancies between different sets of guidelines within the same care context and provide a helpful tool for driving the archetype authoring and review process. PMID:22874238

Anani, Nadim; Chen, Rong; Prazeres Moreira, Tiago; Koch, Sabine

2012-01-01

184

Portal venous arterialization resulting in increased portal inflow and portal vein wall thickness in rats  

PubMed Central

AIM: To explore the influence of portal vein hemo-dynamic changes after portal venous arterialization (PVA) on peribiliary vascular plexus (PVP) morphological structure and hepatic pathology, and to establish a theoretical basis for the clinical application of PVA. METHODS: Sprague-Dawley rats were randomly divided into control and PVA groups. After PVA, hemodynamic changes of the portal vein and morphological structure of hepatohilar PVP were observed using Doppler ultrasound, liver function tests, ink perfusion transparency management and three-dimensional reconstruction of computer microvisualization, and pathological examination was performed on tissue from the bile duct wall and the liver. RESULTS: After PVA, the cross-sectional area and blood flow of the portal vein were increased, and the increase became more significant over time, in a certain range. If the measure to limit the flow in PVA was not adopted, the high blood flow would lead to dilatation of intrahepatic portal vein and its branches, increase in collagen and fiber degeneration in tunica intima. Except glutamic pyruvic transaminase (GPT), other liver function tests were normal. CONCLUSION: Blood with a certain flow and oxygen content is important for filling the PVP and meeting the oxygen requirement of the bile duct wall. After PVA, It is the anatomic basis to maintain normal morphology of hepatohilar bile duct wall that the blood with high oxygen content and high flow in arterialized portal vein may fill PVP by collateral vessel reflux. A adequate measure to limit blood flow is necessary in PVA.

Li, Wen-Gang; Chen, Yong-Liang; Chen, Jing-Xi; Qu, Lei; Xue, Bin-Dang; Peng, Zhi-Hai; Huang, Zhi-Qiang

2008-01-01

185

Advances in health informatics education: educating students at the intersection of health care and information technology.  

PubMed

The paper describes the authors' work in the area of health informatics (HI) education involving emerging health information technologies. A range of information technologies promise to modernize health care. Foremost among these are electronic health records (EHRs), which are expected to significantly improve and streamline health care practice. Major national and international efforts are currently underway to increase EHR adoption. However, there have been numerous issues affecting the widespread use of such information technology, ranging from a complex array of technical problems to social issues. This paper describes work in the integration of information technologies directly into the education and training of HI students at both the undergraduate and graduate level. This has included work in (a) the development of Web-based computer tools and platforms to allow students to have hands-on access to the latest technologies and (b) development of interdisciplinary educational models that can be used to guide integrating information technologies into HI education. The paper describes approaches that allow for remote hands-on access by HI students to a range of EHRs and related technology. To date, this work has been applied in HI education in a variety of ways. Several approaches for integration of this essential technology into HI education and training are discussed, along with future directions for the integration of EHR technology into improving and informing the education of future health and HI professionals. PMID:22910506

Kushniruk, Andre; Borycki, Elizabeth; Armstrong, Brian; Kuo, Mu-Hsing

2012-01-01

186

Portal to the Future  

NASA Astrophysics Data System (ADS)

Museums are a portal connecting us to a deeper understanding of the world in which we live, from our own backyards to the most distant galaxies; an access point to the incredible discoveries we have made about the natural world and a flashpoint for inspiring the next generation of explorers. The Cleveland Museum of Natural History is poised to redefine what a natural history museum can be, offering visitors an opportunity to travel through space and time to explore the origins of our planet, follow the evolution of life on Earth and project into -- and plan for -- the future. The Museum will launch visitors into the future this summer via SmartHome Cleveland -- an extremely energy-efficient "passive house" that will demonstrate the future of green building technology. This unique exhibit is part of a special series of exhibits, programs and workshops on sustainability, including a major exhibit on Climate Change, which will be featured at the Museum this summer and fall.

Gates, Evalyn

2011-04-01

187

C3-5: Patient Use of a Secure Web Portal and LDL in Patients with Diabetes.  

PubMed

Background/Aims Patient use of web portals to interact with their healthcare delivery system and healthcare providers could improve the quality and safety of care. Among patients with diabetes in a large integrated delivery system (IDS), we examined the association between patient use of the web portals and cholesterol test results. Methods The health system implemented a web-based tool for all patients who registered to use the website in November 2005, allowing members to securely access a personal health record, as well as e-mail their physicians, and view their lab results. In this study, we defined patients as web-portal users when patients emailed their physicians or viewed lab results at the first time. We examined the association of patient web-portal use and low-density lipoprotein cholesterol (LDL) level using linear regression with fixed effect at patient level, adjusting for medical center electronic health record (EHR) implementation, quarter for seasonality, and year for temporal trend. Results The 169,711 patients in the IDS diabetes registry at the start of 2004 were followed through 2009. The number of patients who had used patient web-portal increased dramatically from 16% in 2006 to 35% in 2009. During 2004-2009, a total number of 1,070,856 LDL tests were performed among the study subjects and 18% of the tests were done after patients used the web-portal. Overall patient web-portal use was associated with reduction of LDL value by 0.81 mg/dL (95% CI: 0.64-0.97). Further examination among patients stratified by their baseline LDL (last value in 2003) showed that the largest reduction in LDL was found among those with worst control: on average, LDL level dropped by 0.36 mg/dL (95% CI: 0.14-0.57) among those with baseline LDL <100 mg/dL, 0.90mg/dL (95% CI: 0.63-1.18) among those with baseline LDL 100- <130mg/dL, and 2.04 mg/dL (95% CI: 1.59-2.50) among those with baseline LDL >130 mg/dL. Conclusions Patient use of a web-based portal to review laboratory results or email their clinicians increased substantially between 2006 and 2009. Patient use of web portals was associated with improvement of LDL level, with greater improvement among patients in worse control. PMID:24085945

Huang, Jie; Graetz, Ilana; Brand, Richard; Hsu, John; Reed, Mary

2013-09-01

188

C3-5: Patient Use of a Secure Web Portal and LDL in Patients with Diabetes  

PubMed Central

Background/Aims Patient use of web portals to interact with their healthcare delivery system and healthcare providers could improve the quality and safety of care. Among patients with diabetes in a large integrated delivery system (IDS), we examined the association between patient use of the web portals and cholesterol test results. Methods The health system implemented a web-based tool for all patients who registered to use the website in November 2005, allowing members to securely access a personal health record, as well as e-mail their physicians, and view their lab results. In this study, we defined patients as web-portal users when patients emailed their physicians or viewed lab results at the first time. We examined the association of patient web-portal use and low-density lipoprotein cholesterol (LDL) level using linear regression with fixed effect at patient level, adjusting for medical center electronic health record (EHR) implementation, quarter for seasonality, and year for temporal trend. Results The 169,711 patients in the IDS diabetes registry at the start of 2004 were followed through 2009. The number of patients who had used patient web-portal increased dramatically from 16% in 2006 to 35% in 2009. During 2004–2009, a total number of 1,070,856 LDL tests were performed among the study subjects and 18% of the tests were done after patients used the web-portal. Overall patient web-portal use was associated with reduction of LDL value by 0.81 mg/dL (95% CI: 0.64–0.97). Further examination among patients stratified by their baseline LDL (last value in 2003) showed that the largest reduction in LDL was found among those with worst control: on average, LDL level dropped by 0.36 mg/dL (95% CI: 0.14–0.57) among those with baseline LDL <100 mg/dL, 0.90mg/dL (95% CI: 0.63–1.18) among those with baseline LDL 100- <130mg/dL, and 2.04 mg/dL (95% CI: 1.59–2.50) among those with baseline LDL >130 mg/dL. Conclusions Patient use of a web-based portal to review laboratory results or email their clinicians increased substantially between 2006 and 2009. Patient use of web portals was associated with improvement of LDL level, with greater improvement among patients in worse control.

Huang, Jie; Graetz, Ilana; Brand, Richard; Hsu, John; Reed, Mary

2013-01-01

189

At the crossroads: NRTRC white paper examines trends driving the convergence of telehealth, EHRs and HIE.  

PubMed

From the American Recovery and Reinvestment Act (ARRA) and the newly passed healthcare reform legislation to emerging reimbursement models and shifting consumer health trends, a confluence of events are driving radical change in the nation's healthcare system and bringing about the convergence of telehealth, electronic health records (EHRs) and health information exchange (HIE). That is the focus of "The Crossroads of Telehealth, Electronic Health Records & Health Information Exchange: Planning for Rural Communities," a new white paper from the Northwest Regional Telehealth Resource Center (NRTRC). "Accelerating adoption and utilization of telehealth technologies, telemedicine in particular, will be critical to a successful stakeholder response to the disruptive changes that are underway in healthcare," said NRTRC Executive Director Christina B. Thielst, FACHE. "By leveraging telehealth networks and their existing infrastructures, Regional Extension Centers, HIEs and other data-sharing initiatives will be better-positioned to fulfill their commitments to the healthcare delivery system of the future--a system in which even the most rural and remote populations have timely access to care and their health records." The white paper explores emerging trends and recent disruptors impacting the healthcare delivery system and examines the opportunities they present for the advancement of telecommunications-based health solutions and the broadband infrastructure available through telehealth networks. It also takes an in-depth look at the various uses of telehealth and the most common delivery models of telemedicine, as well as the role of the telehealth network and Telehealth Resource Centers (TRCs) in expanding the reach of these vital initiatives. Finally, the white paper highlights the evolution of the REACH Montana Telehealth Network from facilitating teleradiology at three remote sites into a consortium of healthcare providers at 18 sites linked by high-bandwidth telecommunications in the north central region of Montana. REACH, which considers HIE to be a primary function, is currently working to leverage its existing T1 infrastructure to create the "railroad tracks" that will carry medical data and information within the region and beyond. "This white paper is an excellent analysis of the intersection of telehealth and health information technology, and the opportunities and challenges this electronic technology will bring to rural America," said Terry J. Hill, Executive Director of the Rural Health Resource Center, the Duluth, Minn.-based national knowledge center for rural hospitals providing technical assistance, information, education and other resources to rural health care providers and their communities. Adds Thielst: "Crossroads is a valuable planning tool for any healthcare stakeholder, but it is especially important for rural communities wanting to address health information exchange. It is just one of many resources available through the NRTRC to help advance the involvement of teleheatlh networks in HIE initiatives and to help transform the telehealth infrastructure into the 'superhighway' across which remote and rural areas will finally be able to participate in the widespread exchange of electronic health information." One of five TRCs in the nation, the NRTRC leverages the collective expertise of 33 telehealth networks across Alaska, Hawaii, Idaho, Montana, Oregon, Utah, Washington, Wyoming, and United States-affiliated Pacific Islands to share information and resources which assist in the development of new telehealth programs. The NRTRC is focused on further growth and new provider adoption of telehealth technologies to enhance delivery systems and reduce organizational and patient costs. PMID:21391447

Thielst, Christina Beach

2010-01-01

190

Model-based design and implementation of secure, interoperable EHR systems.  

PubMed

For designing and implementing secure, interoperable, portable, and future-proof EHR systems, a comprehensive and standardized methodology supported by appropriate tools has to be established and applied. Based on the component paradigm, the ISO Reference Model - Open Distributed Processing has been used to describe the different views on information systems deploying the appropriate vocabulary for each single model view. The concepts considered rank from legal, organizational, and functional up to technical aspects of systems. The harmonization of vocabularies can be performed by meta-languages. The approach has been demonstrated for the model-based design, implementation and maintenance of a clinical study distributed over the Internet. PMID:14728141

Blobel, Bernd; Stassinopoulos, George; Pharow, Peter

2003-01-01

191

Model-Based Design and Implementation of Secure, Interoperable EHR Systems  

PubMed Central

For designing and implementing secure, interoperable, portable, and future-proof EHR systems, a comprehensive and standardized methodology supported by appropriate tools has to be established and applied. Based on the component paradigm, the ISO Reference Model – Open Distributed Processing has been used to describe the different views on information systems deploying the appropriate vocabulary for each single model view. The concepts considered rank from legal, organizational, and functional up to technical aspects of systems. The harmonization of vocabularies can be performed by meta-languages. The approach has been demonstrated for the model-based design, implementation and maintenance of a clinical study distributed over the Internet.

Blobel, Bernd; Stassinopoulos, George; Pharow, Peter

2003-01-01

192

Searching for Document Contents in an IHE-XDS EHR Architecture via Archetype-Based Indexing of Document Types.  

PubMed

The shared EHR (electronic health record) system architecture IHE XDS is widely adopted internationally. It ensures a high level of data privacy via distributed storage of EHR documents. Its standard search capabilities, however, are limited; it only allows a retrieval of complete documents by querying a restricted set of document metadata. Existing approaches that aim to extend XDS queries to document contents typically employ a central index of document contents. Hereby they undermine XDS' basic characteristic of distributed data storage. To avoid data privacy concerns, we propose querying EHR contents in XDS by indexing document types based on Archetypes instead. We successfully tested our approach within the ISO/EN 13606 standard. PMID:23920866

Rinner, Christoph; Kohler, Michael; Saboor, Samrend; Huebner-Bloder, Gudrun; Ammenwerth, Elske; Duftschmid, Georg

2013-01-01

193

The IP's guide to the galaxy of portal planning: Part I - drafting a portal vision  

Microsoft Academic Search

Purpose - This article is the first in a four-part series that aims to illustrate the processes involved in planning a portal and creating a portal definition document. Design\\/methodology\\/approach - Based on a review of the academic and industry literature and using a case study, the authors share their experience in planning the Florida ExpertNet Research portal. Findings - Portal

Rebecca H. Augustyniak; Dawn B. Aguero; Amy M. Finley

2005-01-01

194

Access to EHR and access control at a moment in the past: a discussion of the need and an exploration of the consequences  

Microsoft Academic Search

The Electronic Health Record (EHR) will become a major support tool in health care delivery. This leads to heavy requirements for its quality and security. The EHR not only has to present the medical data of the patient as they are at the present time, we can anticipate that in situations of medical audit, law suits, quality control and self-assessment

Ab R. Bakker

2004-01-01

195

Portal vein aneurysm in a dog.  

PubMed

Portal vein aneurysm (PVA) is a rare abnormal dilatation of the portal vein, which has not been reported in dogs. We describe the findings of ultrasound and computed tomography in a case of PVA in a young male toy poodle, with the final diagnosis established by explorative surgical observation. The dog had an aneurysmal fusiform dilatation in the extrahepatic portal vein with portal hypertension and multiple portsystemic shunts. This is the first report of canine PVA. PMID:22571895

Miyawaki, Shingo; Washizu, Makoto; Maeda, Sadatoshi; Shibata, Sanae; Watanabe, Kazuhiro; Yamazoe, Kazuaki

2012-04-27

196

Anomaly and Signature Filtering Improve Classifier Performance For Detection Of Suspicious Access To EHRs  

PubMed Central

Our objective is to facilitate semi-automated detection of suspicious access to EHRs. Previously we have shown that a machine learning method can play a role in identifying potentially inappropriate access to EHRs. However, the problem of sampling informative instances to build a classifier still remained. We developed an integrated filtering method leveraging both anomaly detection based on symbolic clustering and signature detection, a rule-based technique. We applied the integrated filtering to 25.5 million access records in an intervention arm, and compared this with 8.6 million access records in a control arm where no filtering was applied. On the training set with cross-validation, the AUC was 0.960 in the control arm and 0.998 in the intervention arm. The difference in false negative rates on the independent test set was significant, P=1.6×10?6. Our study suggests that utilization of integrated filtering strategies to facilitate the construction of classifiers can be helpful.

Kim, Jihoon; Grillo, Janice M; Boxwala, Aziz A; Jiang, Xiaoqian; Mandelbaum, Rose B; Patel, Bhakti A; Mikels, Debra; Vinterbo, Staal A; Ohno-Machado, Lucila

2011-01-01

197

Comparison of response times of a mobile-web EHRs system using PHP and JSP languages.  

PubMed

Performance evaluation is highly important in the Electronic Health Records (EHRs) system implementation. Response time's measurement can be considered as one manner to make that evaluation. In the e-health field, after the creation of EHRs available through different platforms such as Web and/or mobile, a performance evaluation is necessary. The operation of the system in the right way is essential. In this paper, a comparison of the response times for the MEHRmobile system is presented. The first version uses PHP language with a MySQL database and the second one employs JSP with an eXist database. Both versions have got the same functionalities. In addition to the technological aspects, a significant difference is the way the information is stored. The main goal of this paper is choosing the version which offers better response times. We have created a new benchmark to calculate the response times. Better results have been obtained for the PHP version. Nowadays, this version is being used for specialists from Fundación Intras, Spain. PMID:22706897

De la Torre-Díez, Isabel; Antón-Rodríguez, Míriam; Díaz-Pernas, Francisco Javier; Perozo-Rondón, Freddy José

2012-06-16

198

Determining the Reasons for Medication Prescriptions in the EHR using Knowledge and Natural Language Processing  

PubMed Central

Knowledge of medication indications is significant for automatic applications aimed at improving patient safety, such as computerized physician order entry and clinical decision support systems. The Electronic Health Record (EHR) contains pertinent information related to patient safety such as information related to appropriate prescribing. However, the reasons for medication prescriptions are usually not explicitly documented in the patient record. This paper describes a method that determines the reasons for medication uses based on information occurring in outpatient notes. The method utilizes drug-indication knowledge that we acquired, and natural language processing. Evaluation showed the method obtained a sensitivity of 62.8%, specificity of 93.9%, precision of 90% and F-measure of 73.9%. This pilot study demonstrated that linking external drug indication knowledge to the EHR for determining the reasons for medication use was promising, but also revealed some challenges. Future work will focus on increasing the accuracy and coverage of the indication knowledge and evaluating its performance using a much larger set of drugs frequently used in the outpatient population.

Li, Ying; Salmasian, Hojjat; Harpaz, Rave; Chase, Herbert; Friedman, Carol

2011-01-01

199

Determining the reasons for medication prescriptions in the EHR using knowledge and natural language processing.  

PubMed

Knowledge of medication indications is significant for automatic applications aimed at improving patient safety, such as computerized physician order entry and clinical decision support systems. The Electronic Health Record (EHR) contains pertinent information related to patient safety such as information related to appropriate prescribing. However, the reasons for medication prescriptions are usually not explicitly documented in the patient record. This paper describes a method that determines the reasons for medication uses based on information occurring in outpatient notes. The method utilizes drug-indication knowledge that we acquired, and natural language processing. Evaluation showed the method obtained a sensitivity of 62.8%, specificity of 93.9%, precision of 90% and F-measure of 73.9%. This pilot study demonstrated that linking external drug indication knowledge to the EHR for determining the reasons for medication use was promising, but also revealed some challenges. Future work will focus on increasing the accuracy and coverage of the indication knowledge and evaluating its performance using a much larger set of drugs frequently used in the outpatient population. PMID:22195134

Li, Ying; Salmasian, Hojjat; Harpaz, Rave; Chase, Herbert; Friedman, Carol

2011-10-22

200

Portal Implementation Issues: A Case Study  

Microsoft Academic Search

Rapid changes in the Internet technology can urge significant challenges in the business of any organization. Portals have the potential to develop the performance of any organization in terms of productivity and business process efficiency. However, implementing portals can make a negative significant change to the organization. Portal implementations therefore require a significant amount of resources, assets and understanding to

A. S. Al-Mudimigh; Z. Ullah

2010-01-01

201

Portal Monitor Future Development Work: Hardware Improvements  

SciTech Connect

LANL portal monitor was a modification of a previously installed (permanent) unattended monitoring system (UMS). Modifications to the UMS to make the portal were sometimes based on mistaken assumptions about exercise-specific installation and access. Philosophical approach to real-time portal differs in some areas from UMS.

Browne, Michael C. [Los Alamos National Laboratory

2012-07-03

202

Application of the smart portal in transportation.  

National Technical Information Service (NTIS)

Under a program sponsored by the Department of Energy, the Oak Ridge complex is developed a 'Portal-of-the-Future', or 'smart portal'. This is a security portal for vehicular traffic which is intended to quickly detect explosives, hidden passengers, etc. ...

S. W. Kercel V. M. Baylor W. B. Dress T. W. Hickerson W. B. Jatko

1996-01-01

203

Preoperative portal vein embolization for hepatocellular carcinoma  

Microsoft Academic Search

As a countermeasure to portal tumor thrombi, which are a serious danger in liver cancer, we did portal vein embolization (PVE) during percutaneous transhepatic portography. Our 21 patients later underwent hepatic resection. After PVE, portal pressure increased and there was slight liver function damage, but this procedure was safer than transarterial embolization (TAE). We examined the pathologic specimens to view

Hiroaki Kinoshita; Katsuji Sakai; Kazuhiro Hirohashi; Sumito Igawa; Osamu Yamasaki; Shoji Kubo

1986-01-01

204

Management of portal hypertension in children with portal vein thrombosis.  

PubMed

Portal vein thrombosis (PVT) is a common cause of portal hypertension in children. Predisposing conditions for PVT are obscure in more than half of the cases. Variceal bleeding and splenomegaly are the most frequent initial manifestations. Radiologic imaging studies are the mainstay for diagnosis. Treatment includes pharmacologic, endoscopic, and surgical modalities. ?-Adrenergic blockers are not routinely used in children because of unproven efficacy and significant adverse effects. Endoscopic methods, such as sclerotherapy and endoscopic variceal ligation (EVL), are highly effective in the treatment of acute variceal bleeding and eradication of varices. EVL is the treatment of choice because of minimal complications and the need for few endoscopic sessions. EVL facilitates portal decompression either by the formation of collateral vessels or by surgical portosystemic shunting, when vessels grow to the proper diameter for anastomosis. Surgical portosystemic shunts are reserved for refractory cases because of significant complications and technical difficulties. Transjugular portosystemic shunts have an emerging role in the management of portal hypertension caused by PVT. PVT may occur in the posttransplant setting, but optimal management is not defined yet. PMID:23820400

Giouleme, Olga; Theocharidou, Eleni

2013-10-01

205

Hidden Magnetic Portals Around Earth  

NASA Video Gallery

A NASA-sponsored researcher at the University of Iowa has developed a way for spacecraft to hunt down hidden magnetic portals in the vicinity of Earth. These gateways link the magnetic field of our planet to that of the sun, setting the stage for stormy space weather.

Holly Zell

2012-07-02

206

[Surgical treatment of portal hypertension].  

PubMed

A switch to decompressive shunt procedures is mandatory if endoscopic therapy fails to control recurrent variceal hemorrhage. Surgical shunt procedures continue to be safe, highly effective and durable procedures to control variceal bleeding in patients with low operative risk and good liver function (Child A). In cirrhotics, elective operations using portal flow preserving techniques such as a selective distal splenorenal shunt (Warren) or a partial portocaval small diameter interposition shunt (Sarfeh) should be preferred. Rarely, end-to-side portocaval shunt may serve as a salvage procedure if emergent endoscopic treatment or TIPS insertion fail to stop bleeding. Until definitive results from randomized trials are available patients with good prognosis (Child-Pugh A and B) can be regarded as candidates for surgical shunts. For patients with noncirrhotic portal hypertension, in particular with extrahepatic portal vein thrombosis, portosystemic shunt surgery represents the only effective therapy which leads to freedom of recurrent bleeding and repeated endoscopies for many years, and improves hypersplenism without deteriorating liver function or encephalopathy. Gastroesophageal devascularization and other direct variceal ablative procedures should be restricted to treat endoscopic therapy failures without shuntable portal tributaries. PMID:15965877

Wolff, M; Hirner, A

2005-06-01

207

Surgical management of portal hypertension.  

PubMed Central

Portal hypertension is frequently complicated by upper gastrointestinal tract bleeding and ascites. Hemorrhage from esophageal varices is the most common cause of death from portal hypertension. Medical treatment, including resuscitation, vasoactive drugs, and endoscopic sclerosis, is the preferred initial therapy. Patients with refractory hemorrhage frequently are referred for immediate surgical intervention (usually emergency portacaval shunt). An additional cohort of patients with a history of at least 1 episode of variceal hemorrhage is likely to benefit from elective shunt operations. Shunt operations are classified as total, partial, or selective shunts based on their hemodynamic characteristics. Angiographically created shunts have been introduced recently as an alternative to operative shunts in certain circumstances. Devascularization of the esophagus or splenectomy is done for specific indications. Medically intractable ascites is a separate indication for surgical intervention. Liver transplantation has been advocated for patients whose portal hypertension is a consequence of end-stage liver disease. In the context of an increasingly complex set of treatment options, we present an overview of surgical therapy for complications of portal hypertension.

Collins, J C; Sarfeh, I J

1995-01-01

208

Surgical management of portal hypertension.  

PubMed

Portal hypertension is frequently complicated by upper gastrointestinal tract bleeding and ascites. Hemorrhage from esophageal varices is the most common cause of death from portal hypertension. Medical treatment, including resuscitation, vasoactive drugs, and endoscopic sclerosis, is the preferred initial therapy. Patients with refractory hemorrhage frequently are referred for immediate surgical intervention (usually emergency portacaval shunt). An additional cohort of patients with a history of at least 1 episode of variceal hemorrhage is likely to benefit from elective shunt operations. Shunt operations are classified as total, partial, or selective shunts based on their hemodynamic characteristics. Angiographically created shunts have been introduced recently as an alternative to operative shunts in certain circumstances. Devascularization of the esophagus or splenectomy is done for specific indications. Medically intractable ascites is a separate indication for surgical intervention. Liver transplantation has been advocated for patients whose portal hypertension is a consequence of end-stage liver disease. In the context of an increasingly complex set of treatment options, we present an overview of surgical therapy for complications of portal hypertension. PMID:7618313

Collins, J C; Sarfeh, I J

1995-06-01

209

Idiopathic portal hypertension and its pathology.  

PubMed

Idiopathic portal hypertension (IPH) is a disorder of unknown etiology, clinically characterized by portal hypertension (varices and portosystemic collateral vessels), splenomegaly, and anemia (hypersplenism). A similar disorder is called noncirrhotic portal fibrosis in India, and hepatoportal sclerosis seems to be the counterpart in the United States. This disease is uncommon in developed countries. Middle-aged women are more prone to IPH in Japan. The liver has no cirrhosis or pseudonodule formation, and the principal pathologic changes are considerable portal fibrosis, devastation of intrahepatic terminal portal radicles, and parenchymal atrophy of the liver secondary to portal malperfusion. The characteristic portal hemodynamics include intrahepatic presinusoidal portal hypertension, increased splenic and portal vein blood flow, and increased intrahepatic portal resistance. The prognosis is generally good depending on the management of bleeding varices. Although the etiology is obscure, certain immunologic abnormalities seem to play an etiologic role in Japanese patients, and the incidence has markedly declined in recent years in Japan, indirectly suggesting a role of infection. The theory that IPH represents an undiagnosed intrahepatic portal vein thrombosis is refuted. PMID:11928079

Okudaira, Masahiko; Ohbu, Makoto; Okuda, Kunio

2002-02-01

210

Effect of vasopressin on portal venous pressure.  

PubMed

Portal venous pressure measurements were made through percutaneous transhepatic portal vein catheterization in 29 cirrhotics with portal hypertension and in seven controls before and after intravenous vasopressin infusion in a dosage of 0.24 IU/min. In cirrhotic patients the decrease in portal pressure was 8.5% being not statistically significant, while in the control group the decrease was 12% (p less than 0.05). Five of six cirrhotic patients (85%) whose acute bleedings were previously controlled with i.v. vasopressin infusion had reversed portal vein flow. On the other hand, only three of ten (30%) patients whose bleeding failed to be controlled with vasopressin had reversed flow in the portal vein. The difference between these two groups is statistically significant (p less than 0.05) and may suggest that variceal bleeding is most effectively controlled with i.v. vasopressin in cirrhotics with well developed collaterals and reversed portal vein flow. PMID:6601347

Kallio, H; Lempinen, M

1983-01-01

211

The need to know the history of the use of digital patient data, in particular the EHR  

Microsoft Academic Search

The purpose of this article is to explore the need for the possibility to reconstruct electronic medical data, in particular the electronic health record (EHR) as they have been or could have been presented to a specified health care professional at a specified moment in the past.The approach taken is that first the need for such functionality is discussed with

A. R. Bakker

2007-01-01

212

A web-based application for QoS measurement of an EHRs system using exploratory factor analysis (EFA)  

Microsoft Academic Search

This paper presents a telematic application to evaluate the Quality of Service (QoS) of a Web-based Electronic Health Records (EHRs) system using Exploratory Factor Analysis (EFA). It uses different statistic tools to reduce the number of items in the initial survey. We will obtain 22 questions of a total of 40 with the SERVQUAL model, allowing to save time in

Isabel de la Torre-Díez; Francisco Javier Díaz-Pernas; Míriam Antón-Rodríguez; Mario Martínez-Zarzuela; David González-Ortega; Daniel Boto-Giralda

2012-01-01

213

Dealing with the Archetypes Development Process for a Regional EHR System  

PubMed Central

Objectives This paper aims to present the archetype modelling process used for the Health Department of Minas Gerais State, Brazil (SES/MG), to support building its regional EHR system, and the lessons learned during this process. Methods This study was undertaken within the Minas Gerais project. The EHR system architecture was built assuming the reference model from the ISO 13606 norm. The whole archetype development process took about ten months, coordinated by a clinical team co-ordinated by three health professionals and one systems analyst from the SES/MG. They were supported by around 30 health professionals from the internal SES/MG areas, and 5 systems analysts from the PRODEMGE. Based on a bottom-up approach, the project team used technical interviews and brainstorming sessions to conduct the modelling process. Results The main steps of the archetype modelling process were identified and described, and 20 archetypes were created. Lessons learned: –The set of principles established during the selection of PCS elements helped the clinical team to keep the focus in their objectives;–The initial focus on the archetype structural organization aspects was important;–The data elements identified were subjected to a rigorous analysis aimed at determining the most suitable clinical domain;–Levelling the concepts to accommodate them within the hierarchical levels in the reference model was definitely no easy task, and the use of a mind mapping tool facilitated the modelling process;–Part of the difficulty experienced by the clinical team was related to a view focused on the original forms previously used;–The use of worksheets facilitated the modelling process by health professionals;–It was important to have a health professional that knew about the domain tables and health classifications from the Brazilian Federal Government as member in the clinical team. Conclusion The archetypes (referencing terminology, domain tables and term lists) provided a favorable condition for the use of a controlled vocabulary between the central repository and the EMR systems and, probably, will increase the chances of preserving the semantics from the knowledge domain. Finally, the reference model from the ISO 13606 norm, along with the archetypes, proved sufficient to meet the specificities for the creation of an EHR system for basic healthcare in a Brazilian state.

Santos, M.R.; Bax, M.P.; Kalra, D.

2012-01-01

214

The ADRICOSM STAR GeoPortal  

NASA Astrophysics Data System (ADS)

From Stockholm (1972) to Rio de Janeiro (1992) and to Johannesburg (2002), environmental protection objectives are related to the principles of sustainable development. This includes the following important components: participation, information, communication, training (capacity building) and education. Better information ensure more participation from individuals, and allows citizens to take part in many different actions that can influence the policy process. Participation to political decisions need access to reliable and quality controlled information. The ADRICOSM Portal was developed in order to manage data diversity, provide access to any kind of product, provide metadata completeness and accuracy. The product, as defined in ADRICOSM, is anything that can be offered to a client and that might satisfy a want or need. This implied the implementation of services that was taking into consideration the diversity of the objects to be provided to users: observations, model outputs, maps, etc. The implementation of the portal was based on two metadata levels: 1. Directory level - consisting of broad descriptions of the contents of data sets; used to locate data sets of potential interest and 2. Data level - consisting of the actual data objects. The portal was developed as a simplified front end for the partners data management systems, giving emphasis on federated access points focused on thematic aspects. This was based on the idea that specialized customer-related access points can be better carried out by delegated teams of experts who know the needs of different customers, define the user software which is most suited to them. The data management systems provide facilities for two data tracks, one in real-time (or near-realtime) and one in delayed mode. Both tracks are based on the same data sources and transmission systems, but the data follow different routes and are processed differently depending on user requirements. The real-time data and model products are checked after first use for up-grading and additional quality control to ensure that all relevant data are preserved for final archival. In summary the ADRICOSM Geoportal has: - the objective to support data exchange in Adricosm Star and the implementation of tools to facilitate the access to data and information through thematic portals, converting individual data provider systems into a federation. - provide the necessary information to users on content of data that can be accessed in the federated systems. The portal is organised in three modules and a catalog. The module 1 has been realized by giving information on the project and objectives, data policy, reasons to provide products and services, link to the themes. Skilled people can jump to the data/products/services provider by clicking on the geographical map. Module 2 is providing more specific information on centers providing data/products/services. Module 3 is providing a direct access to partners product. It contains a short description of the products and a link. Module 4 contain the catalog for each partner product and is based on What, Where, When and How.

Giorgetti, Alessandra; Cesarini, Claudia; Gambetta, Marco; Reseghetti, Franco; Vinci, Matteo

2010-05-01

215

Automatic acquisition of synonyms from French UMLS for enhanced search of EHRs.  

PubMed

Currently, the use of Natural Language Processing (NLP) approaches in order to improve search and exploration of electronic health records (EHRs) within healthcare information systems is not a common practice. One reason for this is the lack of suitable lexical resources: various types of such resources need to be collected or acquired. In this work, we propose a novel method for the acquisition of synonymous resources. This method is language-independent and relies on existence of structured terminologies. It enables to decipher hidden synonymous relations between simple words and terms on the basis of their syntactic analysis and exploitation of their compositionality. Applied to series of synonym terms from the French subset of the UMLS, the method shows 99% precision. The overlap between thus inferred terms and the existing sparse resources of synonyms is very low. PMID:18487831

Grabar, Natalia; Varoutas, Paul-Christophe; Rizand, Philippe; Livartowski, Alain; Hamon, Thierry

2008-01-01

216

Development and Psychometric Qualities of the SEIPS Survey to Evaluate CPOE/EHR Implementation in ICUs  

PubMed Central

Health Information Technology (IT) implementation can fail or meet high levels of user resistance for a variety of reasons, including lack of attention to users’ needs and the significant workflow changes induced and required by the technology. End-user satisfaction is a critical factor in health IT implementation. In this paper we describe the process of developing and testing a questionnaire to evaluate health IT implementation, in particular Computerized Provider Order Entry (CPOE) and Electronic Health Record (EHR) technologies. Results showed evidence for the validity and reliability of the questionnaire. The Systems Engineering Initiative for Patient Safety (SEIPS) questionnaire is relatively easy to administer and allows researchers to evaluate different aspects of health IT implementation. Results of this research can be used for benchmarking results of future studies evaluating health IT implementation.

Hoonakker, Peter L.T.; Cartmill, Randi S.; Carayon, Pascale; Walker, James M.

2011-01-01

217

Learning to Predict Post-Hospitalization VTE Risk from EHR Data  

PubMed Central

We consider the task of predicting which patients are most at risk for post-hospitalization venothromboembolism (VTE) using information automatically elicited from an EHR. Given a set of cases and controls, we use machine-learning methods to induce models for making these predictions. Our empirical evaluation of this approach offers a number of interesting and important conclusions. We identify several risk factors for VTE that were not previously recognized. We show that machine-learning methods are able to induce models that identify high-risk patients with accuracy that exceeds previously developed scoring models for VTE. Additionally, we show that, even without having prior knowledge about relevant risk factors, we are able to learn accurate models for this task.

Kawaler, Emily; Cobian, Alexander; Peissig, Peggy; Cross, Deanna; Yale, Steve; Craven, Mark

2012-01-01

218

Assessment of portal hypertension in humans.  

PubMed

Patients suspected of having portal hypertension (either by clinical history, physical examination, or previous diagnosis) should undergo ultrasonography and upper gastrointestinal endoscopy. Ultrasonography, preferably using the duplex technique, can disclose the patency of the portal venous system, the presence of signs of portal hypertension (splenomegaly, portocollateral vessels, repermeabilization of the umbilical vein, and so forth) and provide additional information about liver, biliary, or pancreatic diseases that may be the cause of portal hypertension. Endoscopy can assess the presence and size of gastroesophageal varices, the appearance of the variceal wall, and the presence and severity of portal hypertensive gastropathy. Patients showing a patent portal vein should have hepatic vein catheterization to evaluate the presence of presinusoidal, sinusoidal, or postsinusoidal portal hypertension. Patients in whom presinusoidal portal hypertension is suspected (those having esophageal varices with an HVPG below 10 mm Hg) should have liver biopsy and percutaneous transhepatic measurement of portal pressure. In sinusoidal portal hypertension, the results of endoscopy and HVPG measurement are decisive for the therapeutic management of the patients. The authors' results indicate that, before starting prophylactic therapy with beta-blockers, all patients should undergo at least an hepatic vein catheterization to assess HVPG; it would be preferable to have a variceal pressure measurement also. These measurements must be repeated 3 to 4 weeks after the final dose of therapy has been reached to assess the risk of variceal bleeding or rebleeding. PMID:11565131

Escorsell, A; Garcia-Pagán, J C; Bosch, J

2001-08-01

219

Spectroscopic radiation portal monitor prototype  

Microsoft Academic Search

A spectroscopic radiation portal monitor (SPM) prototype consisting of four 10.16-cmtimes10.16-cmtimes40.64-cm sodium iodide (NaI) crystals has been constructed at Pacific Northwest National Laboratory (PNNL). The prototype was put through a variety of tests, including measurements of the absolute detection efficiency of unshielded sources and the detection efficiency and isotopic identification capability of the detector for shielded isotopic sources. The monitor's

Kathleen R. McCormick; David C. Stromswold; James H. Ely; John E. Schweppe; Richard T. Kouzes

2005-01-01

220

A new ICPP portal monitor  

Microsoft Academic Search

Low levels of beta and\\/or gamma contamination as well as gram quantities of special nuclear materials can be detected by a portal-mounted monitor even though the monitor is located in the presence of varying background levels of radiation. The detector consists of 14 area-wide gas proportional detectors, an occupancy monitor, an electronic system for signal and alarm logic, and support

M. A. Georgeson; C. E. Nichols

1981-01-01

221

Uzbekistan Radiation Portal Monnitoring System  

SciTech Connect

The work proposed in this presentation builds on the foundation set by the DTRA funded demonstration project begun in 2000 and completed in December of 2003. This previous work consisted of two phases whose overall objective was to install portal radiation monitors at four select ports-of-entry in Uzbekistan (Tashkent International Airport, Gisht-Kuprik (Kazakhstan border), Alat (Turkmenistan border), and Termez (Afghanistan border)) in order to demonstrate their effectiveness in preventing the illicit trafficking of nuclear materials. The objectives also included developing and demonstrating capabilities in the design, installation, operation, training, and maintenance of a radiation portal monitoring system. The system and demonstration project has proved successful in many ways. An effective working relationship among the Uzbekistan Customs Services, Uzbekistan Border Guards, and Uzbekistan Institute of Nuclear Physics has been developed. There has been unprecedented openness with the sharing of portal monitor data with Lawrence Livermore National Laboratory. The system has proved to be effective, with detection of illicit trafficking, and, at Alat, an arrest of three persons illegally transporting radioactive materials into Turkmenistan. The demonstration project has made Uzbekistan a model nonproliferation state in Central Asia and, with an expanded program, places them in a position to seal a likely transit route for illicit nuclear materials. These results will be described. In addition, this work is currently being expanded to include additional ports-of-entry in Uzbekistan. The process for deciding on which additional ports-of-entry to equip will also be described.

Richardson, J; Knapp, R; Loshak, A; Yuldashev, B; Petrenko, V

2005-06-10

222

Web-based B2B portals  

Microsoft Academic Search

A portal development frenzy is sweeping through commerce in an attempt to capture the growing business-to-business (B2B) Internet market. However, the very tactics employed to attract users have blurred the significance and, consequently, the effective utilization of portals in B2B strategies. This research analyzes the development of portals to propose a classification based on the informational\\/transactional, horizontal\\/vertical, and public\\/private dimensions

Irvine Clarke; Theresa B. Flaherty

2003-01-01

223

Medical education in an electronic health record-mediated world.  

PubMed

This paper reflects on the extent to which we are preparing learners for practice in an electronic health record (EHR)-mediated world. We are currently training the last generation to remember a world without the Internet and the first who will practice in a largely EHR-mediated practice environment. We undertook a thematic review of the literature connecting medical education with e-health using the concepts of 'electronic health record' or 'electronic medical record' as a proxy for the broader notion of e-health. Our findings are more equivocal and cautious than earlier commentators might have expected and while there are examples of good practice and successful integration, the majority of articles we reviewed raised issues and problems with the current links between EHRs and medical education. Medical professionals in particular are quite ambivalent about many of the changes brought about by EHRs, and in the absence of changes in perception and practice it is likely that the connections between medical education and e-health will continue to be problematic. We hope that this paper will lead to an improved understanding of these problems and will serve to advance the discourse on how medical education should engage with the world of e-health and the world of e-health with medical education. PMID:23464893

Ellaway, Rachel H; Graves, Lisa; Greene, Peter S

2013-03-06

224

The Astrophysics Simulation Collaboratory Portal: A Science Portal Enabling Community Software Development  

Microsoft Academic Search

Grid Portals, based on standard Web technologies, are emerging as important and useful user interfaces to computational and data grids. Grid portals enable virtual organizations, comprised of distributed researchers to collaborate and access resources more efficiently and seamlessly. The Astrophysics Simulation Collaboratory (ASC) Grid Portal provides a framework to enable researchers in the field of numerical relativity to study astrophysical

Michael Russell; Gabrielle Allen; Greg Dauess; Ian T. Foster; Edward Seidel; Jason Novotnyt; John Shales; Gregor von Laszewski

2001-01-01

225

Transjugular intrahepatic portosystemic shunt for palliative treatment of portal hypertension secondary to portal vein tumor thrombosis  

Microsoft Academic Search

AIM: To evaluate the palliative therapeutic effects of transjugular intrahepatic portosystemic shunt (TIPS) in portal vein tumor thrombosis (PVTT) complicated by portal hypertension. METHODS: We performed TIPS for 14 patients with PVTT due to hepatocellular carcinoma (HCC). Of the 14 patients, 8 patients had complete occlusion of the main portal vein, 6 patients had incomplete thrombosis, and 5 patients had

Zai-Bo Jiang; Hong Shan; Xin-Ying Shen; Ming-Sheng Huang; Zheng-Ran Li; Kang-Shun Zhu; Shou-Hai Guan

226

Portal Hypertension Secondary to Isolated Liver Tuberculosis  

PubMed Central

In this report, we present a case of isolated liver tuberculosis (TB) as a cause of non-cirrhotic portal hypertension leading to bleeding esophageal varices. Although TB has been known to cause portal hypertension in a variety of ways, this case was notable for the presence of periportal inflammation and granulomas, also seen in hepatic schistosomiasis. Herein, we discuss isolated liver TB and the differential diagnosis of non-cirrhotic portal hypertension. In endemic areas, TB should be considered in the differential diagnosis of non-cirrhotic portal hypertension.

Mojtahedzadeh, Mona; Otoukesh, Salman; Shahsafi, Mohammad R.; Tahbaz, Mohammad O.; Rahvari, Seyed K.; Poorabdollah, Mihan; Sajadi, Mohammad M.

2012-01-01

227

Portal Vein Aneurysm Presenting with Obstructive Jaundice  

PubMed Central

To the best of our knowledge, a portal vein aneurysm presenting with obstructive jaundice has not been reported in the literature. The preferred treatment for these aneurysms is surgical and a shunting procedure should be considered in cases with portal hypertension to preserve portal vein flow when portal hypertension is present or is secondary to the aneurysm itself. In our case, due to patient's advanced age and co-morbidities, an endoscopic biliary stent was placed which led to successful resolution of symptoms of obstructive jaundice.

Lall, Chandana; Verma, Sadhna; Gulati, Rajesh; Bhargava, Puneet

2012-01-01

228

Portal thrombosis: dynamic CT features and course  

SciTech Connect

Portal thrombosis was diagnosed on computed tomography (CT) in 10 patients and confirmed by sonography. CT demonstrated decreased density of the portal vessels in 9 patients with peripheral arterial concentration of contrast material surrounding the intraluminal thrombus. The involved vessels were generally enlarged. Three patients had follow-up scans, which revealed a cavernoma in 2 and complete patency of the portal vein and its branches following anticoagulant therapy in 1. In the latter patient, localized abnormal intrahepatic blood flow suggested infarction of portal origin as the result of clot migration.

Mathieu, D.; Vasile, N.; Grenier, P.

1985-03-01

229

Middle School Portal: Math and Science Pathways (MSP2)  

NSDL National Science Digital Library

The Middle School Portal 2: Math and Science Pathways (MSP2) supports middle grades educators with high-quality, standards-based resources and promotes collaboration and knowledge-sharing among its users. Educators use MSP2 to increase content knowledge in science, mathematics, and appropriate pedagogy for youth ages 10 to 15. MSP2 employs social networking and digital tools to foster dynamic experiences that promote creation, modification, and sharing of resources, facilitate professional development, and support the integration of technology into practice. MSP2 is a project of the Ohio State University College of Education and Human Ecology, National Middle School Association, and Education Development Center, Inc., and is funded by the National Science Foundation. The partners integrate resources, tools, and services across projects, and support multiple methods of resource discovery to meet the needs of this audience.

2005-03-24

230

Astronomia.pl Portal as a Partner for Projects Aimed at Students or Public  

NASA Astrophysics Data System (ADS)

There are quite many educational astronomical projects. To reach their target audience they need a proper way of communication, including suitable media. The role of Internet media continually increases and one of the elements of communication should be astronomical portal visited by teachers and students. Astronomia.pl portal participate or support (more or less formally) different projects and actions undertaken to educate or communicate astronomy. Several examples of such projects are Become a Young Copernicus, Kids on the Moon, Faulkes Telescope, Hands On Universe or events like Globe at Night and Catch a Star. The portal also organizes its own actions, like quizes for students. An address of our main website is www.astronomia.pl, English version: www.astronomia.pl/english.

Czart, K.; Pomierny, J.

2006-08-01

231

Interfaces between electronic medical record (EMR/EHR) technology and people in American medicine: insight. imagination, and relationships in clinical practice.  

PubMed

This paper explores the contexts and relationships in which EMR/EHR technology is used in healthcare settings. It approaches the EMR/EHR as an issue in clinical ethics. The author recognizes the immense contribution that healthcare informatics makes to coordinating and integrating medical care at the level of individual physician, nurse, and institutions. At the same time the author raises a cautionary note about some unrecognized dimensions of the use and experience of the EMR/EHR. The author argues that the EMR/EHR can consciously and unconsciously become an instrument of assembly line-like physician "productivity" and "production reports" that depersonalize patient and physician alike. Construed this way, the EMR/EHR can narrow the clinician's imagination, relationships, clinical decision-making, and documentation into oversimplified, and potentially distorting, clinical narratives and categories such as fit into CPT, ICD-9, DRG, DSM-IV and other codes, EBM protocols, and clinical algorithms. By contrast, the author uses a vignette and one of his own clinical poems to illustrate the rich weave of relationship and meaning that are foreground rather than background in clinical assessment, decision-making, treatment, outcome, and satisfaction. The author concludes with a call to imaginatively use the EMR/EHR as an instrument of physician-patient communication, and to include in it and make available vital narrative data (evidence) about patient, family, culture, occupation, socioeconomic status, physician, disease, and their relationships. PMID:23091977

Stein, Howard F

2012-08-01

232

Endovascular interventions for traumatic portal venous hemorrhage complicated by portal hypertension  

PubMed Central

Life-threatening hemorrhage rarely occurs from the portal vein following blunt hepatic trauma. Traditionally, severe portal bleeding in this setting has been controlled by surgical techniques such as packing, ligation, and venorrhaphy. The presence of portal hypertension could potentially increase the amount of hemorrhage in the setting of blunt portal vein trauma making it more difficult to control. This case series describes the use of indirect carbon dioxide portography to identify portal hemorrhage. Furthermore, these cases illustrate attempted endovascular treatment utilizing a transjugular intrahepatic portosystemic shunt in one scenario and transmesocaval shunt coiling of a jejunal varix in the other.

Sundarakumar, Dinesh Kumar; Smith, Crysela Mirta; Lopera, Jorge Enrique; Kogut, Matthew; Suri, Rajeev

2013-01-01

233

Regional Ocean Data Portal: Transforming Information to Knowledge  

NASA Astrophysics Data System (ADS)

The mission of the Gulf of Mexico Coastal Ocean Observing System’s (GCOOS) regional data portal is to aggregate data and model output from distributed providers and to offer these, and derived products, through a single access point in standardized ways to a diverse set of users. The portal evolved under the NOAA-led U.S. Integrated Ocean Observing System (IOOS) program where automated largely-unattended machine-to-machine interoperability has always been a guiding tenet for system design. Initially, the portal focused on aggregating relatively homogeneous oceanographic and marine meteorological data from the principal Gulf of Mexico data providers. Obtaining community agreements from the data providers on data formats, vocabularies, and levels of service was relatively easy because the technical barriers to participation were low and we were able to provide financial support to them to make small additions or changes to their local data systems. Over time, the portal requirements became more complex as new parameters, new providers and heterogeneous data streams were added and the spatial domain increased to include beaches and adjacent wetlands. This began to strain our resources and take us outside our science domains of expertise. During the same period, the Gulf of Mexico Alliance (GOMA), a new environmental quality initiative involving the five Gulf states and Mexico with similar goals and directives as those of our sponsor, gained momentum and demanded both our attention and participation. GOMA is working, mostly among themselves, to discover or establish community standards for various types of data sets - e.g. water quality and nutrients. In addition to aggregation, the portal is also tasked with producing products from the collected information streams. Arriving at a prioritized list of desired products has been a major part of the business conducted by the GCOOS Regional Association (RA). Numerous stakeholder (e.g. emergency responders, oil and gas producers, recreational boaters, etc.) workshops were held to elicit user needs and requirements for observing system products for each group. The GCOOS-RA’s Products and Services Committee and Education and Outreach Council have gone through similar activities aimed at determining what products various users groups want. We have been sensitive to the private sector when deciding which products to produce. While science users want numbers, users of all types mainly want maps. We have tried to develop flexible capabilities within the portal that helps users to create their own fused products, ad hoc, for a variety of output devices, from desktop screens to the smart phones. We will discuss how our data management system has evolved within the backdrop of rapidly changing technologies and diverse community requirements.

Howard, M. K.; Gayanilo, F. C.; Jochens, A. E.

2009-12-01

234

PTXT Finder - an application for finding appropriate EHR data elements for data analysis using cross referencing information sources.  

PubMed

PTXT Finder was developed to reduce the manual efforts necessary to map from clinical variables in a decision support system to data elements in an EHR. The descriptions in a data dictionary may be inadequate for pinpointing data elements that represent a clinical variable. Semantics implied in taxonomy and real usage of the element are two important supporting information sources. PTXT Finder provides description, hierarchy, and statistics displays so users can cross-reference among these views. PMID:18694132

Lin, Jau-Huei; Haug, Peter J

2007-10-11

235

Grid-based implementation of XDS-I as part of image-enabled EHR for regional healthcare in Shanghai  

Microsoft Academic Search

Purpose  Due to the rapid growth of Shanghai city to 20 million residents, the balance between healthcare supply and demand has become\\u000a an important issue. The local government hopes to ameliorate this problem by developing an image-enabled electronic healthcare\\u000a record (EHR) sharing mechanism between certain hospitals. This system is designed to enable healthcare collaboration and reduce\\u000a healthcare costs by allowing review

Jianguo Zhang; Kai Zhang; Yuanyuan Yang; Jianyong Sun; Tonghui Ling; Guangrong Wang; Yun Ling; Derong Peng

2011-01-01

236

The Portal to the Universe an IYA2009 Cornerstone Project  

NASA Astrophysics Data System (ADS)

The science of astronomy is extremely fast moving, and delivers new results on a daily basis, often in the form of spectacular news, images of forms and shapes not seen anywhere else, enhanced by illustrations and animations. Public astronomy communication has to develop apace with the other players in the mass market for electronic information such as the gaming and entertainment industries. The problem today is not so much the availability of excellent astronomy multimedia resources for use in education, outreach and the like, but rather finding and accessing these materials. The Portal to the Universe (TPTTU) seeks to fix this problem. The Portal to the Universe (TPTTU) is an IYA2009 Cornerstone project that will feature a comprehensive directory of observatories, facilities, astronomical societies, amateur astronomy societies, space artists, science communication universities, as well as news-, image-, event- and video- aggregators and Web 2.0 collaborative tools for astronomy multimedia community interaction. The Portal will enable innovative access to, and vastly multiply the use of, astronomy multimedia resources - including news, images, videos, events, podcasts, vodcasts etc. as a selective aggregator with a non-painful editorial mechanism in place. This talk will discuss the plans for the TPTTU content as well as the technology and editorial choices behind the scenes.

Lindberg Christensen, Lars; Gay, P.; IYA2009 TPTTU Cornerstone Task Group

2008-05-01

237

BSD Portals for LINUX 2.0.  

National Technical Information Service (NTIS)

Portals, an experimental feature of 4.4BSD, extend the file system name space by exporting certain open () requests to a user-space daemon. A portal daemon is mounted into the file name space as if it were a standard file system. When the kernel resolves ...

A. D. McNab

1999-01-01

238

A CLUSTER ANALYSIS OF CAMPUS PORTAL IMPLEMENTATION  

Microsoft Academic Search

This study investigates the status of portal implementation in the academic world. A two-stage cluster analysis was used to divide the sample colleges and universities into three groups (Internal Focus Implementers, External Focus Implementers and Starters) based on the portal features implemented by each school. The differences among the three groups were assessed based on the type of school and

Suhong Li; Wallace A. Wood

239

Posttraumatic intrapancreatic aortosplenic fistula causing portal hypertension.  

PubMed

Arterioportal fistulas are uncommon. The case of a patient with massive uncontrollable esophageal variceal bleeding is presented. Reversible portal hypertension was caused by a posttraumatic giant intrapancreatic aortosplenic fistula. Percutaneous closure was unsuccessful, and pancreatectomy was performed to control the bleeding. The case is discussed and the literature on this exceptional cause of portal hypertension is reviewed. PMID:14514565

Estrada, Oscar; Mestres, Carlos-A; López-Boado, Miguel-A; Salmerón, Juan A; Visa, José; García-Valdecasas, Juan-Carlos

2003-09-01

240

A Grid Web Portal for Aerospace  

Microsoft Academic Search

Abstract—A wind tunnel simulation requires high-performance computing ,power ,like supercomputers and deep knowledge of this subject. Those requirements make win tunnel simulation difficult. Grid technology will make these difficulties simpler by providing easy to use grid web portal. By using grid web portal, scientist can execute simulation and access to highperformance computing power without any serious difficulties. In this paper

Sang Boem Lim; Joobum Kim; Nam Gyu Kim; June H. Lee; Chongam Kim; Yoonhee Kim

2006-01-01

241

Innovations in weapons detector portal technology  

Microsoft Academic Search

Conventional concealed weapons detection portals, deployed worlwide at airports, governent buildings, courthouses, and other security critical facilities, are challenged by today's need for stringent and effective entry point screening. Modern threats, like exotic lightweight handguns, are becoming increasingly difficult to detect. Conventional portals do little, if anything, to assist security personnel in resolving the true nature of a potential threat.

Alexander R. Perry; Peter V. Czipott; Simon P. Beevor; Gerard A. Hanley

2003-01-01

242

International Affairs Portal: A Semantic Web Application  

Microsoft Academic Search

Abstract This paper describes a semantic portal on the domain of International Affairs. This application is an integration of several technologies in the field of the Semantic Web in a complex project. We describe an approach, tools and techniques that allow building a semantic portal, where access is based on the meaning of concepts and relations of the International Affairs

Jesús Contreras; V. Richard Benjamins; Mercedes Blázquez; Silvestre Losada; R. Salla; J. Sevilla; D. Navarro; Joaquín Casillas; A. Mompó; Diego Patón; Luis Rodrigo; P. Tena; I. Martos

2004-01-01

243

Factors Affecting Faculty Web Portal Usability  

ERIC Educational Resources Information Center

|The study investigated the factors that might significantly affect web portal usability. Results of the study were intended to serve as inputs for faculty web portal development of the University of the East-Manila. Descriptive statistics utilized questionnaire data from 82 faculty members. The data showed that most of the respondents were…

Bringula, Rex P.; Basa, Roselle S.

2011-01-01

244

Semantic Methods and Tools for Information Portals  

Microsoft Academic Search

The paper describes a set of approaches for representing and access- ing information within a semantically structured information portal, while offer- ing the possibility to integrate own information. It discusses research performed within the project 'Semantic Methods and Tools for Information Portals (SemI- Port)'. In particular, it focuses on (1) the development of scalable storing, pro- cessing and querying methods

Sudhir Agarwal; Peter Fankhauser; Jorge Gonzalez-ollala; Jens Hartmann; Silvia Hollfelder; Anthony Jameson; Stefan Klink; Patrick Lehti; Michael Ley; Emma Rabbidge; Eric Schwarzkopf; Nitesh Shrestha; Nenad Stojanovic; Rudi Studer; Gerd Stumme; Bernd Walter; Alexander Weber

2003-01-01

245

A Case Analysis of INFOMED: The Cuban National Health Care Telecommunications Network and Portal  

Microsoft Academic Search

Background: The Internet and telecommunications technologies contribute to national health care system infrastructures and extend global health care services markets. The Cuban national health care system offers a model to show how a national information portal can contribute to system integration, including research, education, and service delivery as well as international trade in products and services. Objective: The objectives of

Pavillon Palasis-Prince

246

Management of Portal Hypertension in Children  

PubMed Central

Management of portal hypertension in children has evolved over the past several decades. Portal hypertension can result from intrahepatic or extrahepatic causes. Management should be tailored to the child based on the etiology of the portal hypertension and on the functionality of the liver. The most serious complication of portal hypertension is gastroesophageal variceal bleeding, which has a mortality of up to 30%. Initial treatment of bleeding focuses on stabilizing the patient. Further treatment measures may include endoscopic, medical, or surgical interventions as appropriate for the child, depending on the cause of the portal hypertension. ?-Blockers have not been proven to effectively prevent primary or secondary variceal bleeding in children. Sclerotherapy and variceal band ligation can be used to stop active bleeding and can prevent bleeding from occurring. Transjugular intrahepatic portosystemic shunts and surgical shunts may be reserved for those who are not candidates for transplant or have refractory bleeding despite medical or endoscopic treatment.

Mileti, Elizabeth

2010-01-01

247

Automatic definition of the oncologic EHR data elements from NCIT in OWL.  

PubMed

Semantic interoperability based on ontologies allows systems to combine their information and process them automatically. The ability to extract meaningful fragments from ontology is a key for the ontology re-use and the construction of a subset will help to structure clinical data entries. The aim of this work is to provide a method for extracting a set of concepts for a specific domain, in order to help to define data elements of an oncologic EHR. Method: a generic extraction algorithm was developed to extract, from the NCIT and for a specific disease (i.e. prostate neoplasm), all the concepts of interest into a sub-ontology. We compared all the concepts extracted to the concepts encoded manually contained into the multi-disciplinary meeting report form (MDMRF). Results: We extracted two sub-ontologies: sub-ontology 1 by using a single key concept and sub-ontology 2 by using 5 additional keywords. The coverage of sub-ontology 2 to the MDMRF concepts was 51%. The low rate of coverage is due to the lack of definition or mis-classification of the NCIT concepts. By providing a subset of concepts focused on a particular domain, this extraction method helps at optimizing the binding process of data elements and at maintaining and enriching a domain ontology. PMID:21893803

Cuggia, Marc; Bourdé, Annabel; Turlin, Bruno; Vincendeau, Sebastien; Bertaud, Valerie; Bohec, Catherine; Duvauferrier, Régis

2011-01-01

248

Straddle Carrier Radiation Portal Monitoring  

SciTech Connect

U.S. Customs and Border Protection (CBP) is the primary enforcement agency protecting the nation’s ports of entry. CBP is enhancing its capability to interdict the illicit import of nuclear and radiological materials and devices that may be used by terrorists. Pacific Northwest National Laboratory (PNNL) is providing scientific and technical support to CBP in their goal to enable rapid deployment of nuclear and radiation detection systems at U. S. ports of entry to monitor 100% of the incoming international traffic and cargo while not adversely impacting the operations or throughput of the ports. The U.S. ports of entry include the following vectors: land border crossings, seaports, airports, rail crossings, and mail and express consignment courier facilities. U.S. Customs and Border Protection (CBP) determined that a screening solution was needed for Seaport cargo containers being transported by Straddle Carriers (straddle carriers). A stationary Radiation Portal Monitor (RPM) for Straddle Carriers (SCRPM) is needed so that cargo containers can be scanned while in transit under a Straddle Carrier. The Straddle Carrier Portal operational impacts were minimized by conducting a time-motion study at the Port, and adaptation of a Remotely Operated RPM (RO-RPM) booth concept that uses logical lighting schemes for traffic control, cameras, Optical Character Recognition, and wireless technology.

Andersen, Eric S.; Samuel, Todd J.; Mullen, O Dennis

2005-08-01

249

Extensive portal tumor thrombi with portal hypertension in an autopsy case of intrahepatic cholangiocarcinoma.  

PubMed

Vascular invasion is not a prominent feature of cholangiocarcinoma (CCC), in contrast to hepatocellular carcinoma (HCC), which frequently shows extensive vascular tumor thrombi. We report an autopsy case of CCC with extensive portal tumor thrombi and portal hypertension. A 57-yr-old man presented with abdominal pain. Liver imaging revealed no tumors, but showed intrahepatic portal venous obstruction. HCC with portal tumor thrombi was suspected clinically. His clinical course was rapid; he died of hepatic failure 50 days after admission. At autopsy, the liver (2,700 g) was studded with diffuse whitish yellow granular areas with flecks of coalescent granules. Intrahepatic portal veins were diffusely occluded by tumor thrombi. Microscopically, the tumor was poorly differentiated adenocarcinoma with mucin; tumor cells were immunohistochemically positive for carcinoembryonic antigen, CA 19-9, DU-PAN-2, and biliary type cytokeratins, but negative for alpha-fetoprotein. Tumor cells were diffuse in the liver, and there were numerous tumor thrombi in the small portal veins. Hepatic veins and small arteries were occasionally occluded by tumor thrombi. There was ascites, splenomegaly and tumor thrombi in the gastric and esophageal veins, suggesting that portal hypertension had been present. This tumor seemed to have marked affinity to invade portal veins. It must be stressed that there are CCCs with extensive portal tumor thrombi and resultant portal hypertension. PMID:1329498

Terada, T; Kida, T; Nakanuma, Y; Noguchi, T

1992-10-01

250

Incorporating personalized gene sequence variants, molecular genetics knowledge, and health knowledge into an EHR prototype based on the Continuity of Care Record standard  

PubMed Central

Summary Objectives The current volume and complexity of genetic tests, and the molecular genetics knowledge and health knowledge related to interpretation of the results of those tests, are rapidly outstripping the ability of individual clinicians to recall, understand and convey to their patients information relevant to their care. The tailoring of molecular genetics knowledge and health knowledge in clinical settings is important both for the provision of personalized medicine and to reduce clinician information overload. In this paper we describe the incorporation, customization and demonstration of molecular genetic data (mainly sequence variants), molecular genetics knowledge and health knowledge into a standards-based electronic health record (EHR) prototype developed specifically for this study. Methods We extended the CCR (Continuity of Care Record), an existing EHR standard for representing clinical data, to include molecular genetic data. An EHR prototype was built based on the extended CCR and designed to display relevant molecular genetics knowledge and health knowledge from an existing knowledge base for cystic fibrosis (OntoKBCF). We reconstructed test records from published case reports and represented them in the CCR schema. We then used the EHR to dynamically filter molecular genetics knowledge and health knowledge from OntoKBCF using molecular genetic data and clinical data from the test cases. Results The molecular genetic data were successfully incorporated in the CCR by creating a category of laboratory results called “Molecular Genetics ” and specifying a particular class of test (“Gene Mutation Test”) in this category. Unlike other laboratory tests reported in the CCR, results of tests in this class required additional attributes (“Molecular Structure” and “Molecular Position”) to support interpretation by clinicians. These results, along with clinical data (age, sex, ethnicity, diagnostic procedures, and therapies) were used by the EHR to filter and present molecular genetics knowledge and health knowledge from OntoKBCF. Conclusions This research shows a feasible model for delivering patient sequence variants and presenting tailored molecular genetics knowledge and health knowledge via a standards-based EHR system prototype. EHR standards can be extended to include the necessary patient data (as we have demonstrated in the case of the CCR), while knowledge can be obtained from external knowledge bases that are created and maintained independently from the EHR. This approach can form the basis for a personalized medicine framework, a more comprehensive standards-based EHR system and a potential platform for advancing translational research by both disseminating results and providing opportunities for new insights into phenotype-genotype relationships.

Jing, Xia; Kay, Stephen; Marley, Tom; Hardiker, Nicholas R.; Cimino, James J.

2011-01-01

251

Evaluation of a flowchart-based EHR query system: a case study of RetroGuide.  

PubMed

Provision of query systems which are intuitive for non-experts has been recognized as an important informatics challenge. We developed a prototype of a flowchart-based analytical framework called RetroGuide that enables non-experts to formulate query tasks using a step-based, patient-centered paradigm inspired by workflow technology. We present results of the evaluation of RetroGuide in comparison to Structured Query Language (SQL) in laboratory settings using a mixed method design. We asked 18 human subjects with limited database experience to solve query tasks in RetroGuide and SQL, and quantitatively compared their test scores. A follow-up questionnaire was designed to compare both technologies qualitatively and investigate RetroGuide technology acceptance. The quantitative comparison of test scores showed that the study subjects achieved significantly higher scores using the RetroGuide technology. Qualitative study results indicated that 94% of subjects preferred RetroGuide to SQL because RetroGuide was easier to learn, it better supported temporal tasks, and it seemed to be a more logical modeling paradigm. Additional qualitative evaluation results, based on a technology acceptance model, suggested that a fully developed RetroGuide-like technology would be well accepted by users. Our study is an example of a structure validation study of a prototype query system, results of which provided significant guidance in further development of a novel query paradigm for EHR data. We discuss the strengths and weakness of our study design and results, and their implication for future evaluations of query systems in general. PMID:19560553

Huser, Vojtech; Narus, Scott P; Rocha, Roberto A

2009-06-26

252

Astropedia — A Data Portal for Planetary Science  

NASA Astrophysics Data System (ADS)

Astropedia is a data portal that allows easy ingestion, presentation, and delivery of cartographic products housed at the USGS Astrogeology Science Center, made available in a consistent, efficient, and user-friendly manner.

Bailen, M. S.; Hare, T. M.; Akins, S. W.; Isbell, C.

2012-03-01

253

Portal film enhancement: technique and clinical utility.  

PubMed

We report on the results a 3-year project which had as its goal the development of methods to enhance radiation portal films to improve their readability. We had previously reported on a portal film enhancement technique, contrast limited adaptive histogram equalization, which could enhance low contrast detail, but degraded sharply contrasted edges. A new method, unsharp masking followed by contrast limited adaptive histogram equalization, now appears to overcome this problem. A clinical trial to test whether enhanced portal films could be read more accurately than standard ones was undertaken. The trial involved 12 readers from two institutions doing 276 readings. In this trial the enhanced films were judged to be of higher quality than the non-enhanced films (p < .001) and were read more accurately (p = .026). The usefulness and difficulties of routinely performing portal film enhancement in a busy radiation therapy department are discussed. PMID:8420883

Rosenman, J; Roe, C A; Cromartie, R; Muller, K E; Pizer, S M

1993-01-15

254

Demonstration web-portal for tourism enterprises  

Microsoft Academic Search

Purpose – The purpose of this paper is to describe multiple case studies based on free\\/open-source software (F\\/OSS) web applications. F\\/OSS web applications were deployed to create a demo web-portal for Swiss small- and medium-sized tourism enterprises (SMTEs). The web-portal will demonstrate web applications for the purpose of F\\/OSS awareness and their subsequent trials. Design\\/methodology\\/approach – Multiple case studies using

Sanjay Chib; France Cheong

2011-01-01

255

Assessing portal hypertension in liver diseases.  

PubMed

Portal hypertension is a common complication of chronic liver diseases and is responsible for most clinical consequences of cirrhosis, which represent the more frequent causes of death and liver transplantation in these patients. This review is aimed at clarifying the state-of-the art assessment of portal hypertension and at discussing recent developments in this field. Particular attention is paid to new noninvasive techniques that will be soon available for potential routine use. PMID:23363263

Berzigotti, Annalisa; Seijo, Susana; Reverter, Enric; Bosch, Jaime

2013-02-01

256

Psychiatric Aspects of Portal-Systemic Encephalopathy  

Microsoft Academic Search

This paper focuses on psychiatric aspects of portal-systemic encephalopathy (PSE) due to chronic liver disease and\\/or portal-systemic shunting. Clinical syndromes of PSE are discussed from the point of view of biological psychiatry, but, psychological consequences of concomitant cognitive disorders are also addressed. Psychiatric symptoms of early PSE and sleep disorders in patients with chronic liver disease are of specific interest.

J. Wiltfang; W. Nolte; K. Weifienborn; J. Kornhuber; E. Rüther

1998-01-01

257

Two cases of portal annular pancreas.  

PubMed

Portal annular pancreas is one of the pancreatic fusion anomalies in which the uncinate process of the pancreas extends to fuse with the dorsal pancreas by encircling the portal vein or superior mesenteric vein. We report two consecutive patients with portal annular pancreas. The first case is a 71-year-old male patient who underwent a pancreaticoduodenectomy for intraductal papillary mucinous neoplasm in the head of pancreas. His preoperative computed tomography scan showed the suprasplenic type portal annular pancreas. The second case is a 74-year-old female patient who underwent a laparoscopic anterior radical antegrade modular pancreatosplenectomy (RAMPS) for pancreatic body cancer. In operative finding, portal confluence (superior mesenteric vein-splenic vein-portal vein) was encased with the uncinate process of pancreas in both cases. Therefore, they required pancreatic division at the pancreatic neck portion twice. During the postoperative period, grade B and A, respectively, postoperative pancreatic fistulas occurred and were controlled by conservative management. Surgeons need to know about this rare pancreatic condition prior to surgical intervention to avoid complications, and to provide patients with well-designed, case-specific pancreatic surgery. PMID:22832801

Jang, Ji Young; Chung, Young Eun; Kang, Chang Moo; Choi, Sung Hoon; Hwang, Ho Kyoung; Lee, Woo Jung

2012-07-01

258

What Particulars are Referred to in Electronic Health Record Data? A Case Study in Integrating Referent Tracking into an EHR Application  

PubMed Central

Referent Tracking (RT) advocates the use of instance unique identifiers to refer to the entities comprising the subject matter of patient health records. RT promises many benefits to those who use health record data to improve patient care. To further the adoption of the paradigm we provide an illustration of how data from an EHR application needs to be decomposed in order to make it accord with the tenets of RT. We describe the ontological principles on which this decomposition is based in order to allow integration efforts to be applied in similar ways to other EHR applications. We find that an ordinary statement from an EHR contains a surprising amount of “hidden” data that are only revealed by its decomposition according to these principles.

RUDNICKI, Ron; CEUSTERS, Werner; MANZOOR, Shahid; SMITH, Barry

2007-01-01

259

An EHR Prototype Using Structured ISO/EN 13606 Documents to Respond to Identified Clinical Information Needs of Diabetes Specialists: A Controlled Study on Feasibility and Impact  

PubMed Central

Cross-institutional longitudinal Electronic Health Records (EHR), as introduced in Austria at the moment, increase the challenge of information overload of healthcare professionals. We developed an innovative cross-institutional EHR query prototype that offers extended query options, including searching for specific information items or sets of information items. The available query options were derived from a systematic analysis of information needs of diabetes specialists during patient encounters. The prototype operates in an IHE-XDS-based environment where ISO/EN 13606-structured documents are available. We conducted a controlled study with seven diabetes specialists to assess the feasibility and impact of this EHR query prototype on efficient retrieving of patient information to answer typical clinical questions. The controlled study showed that the specialists were quicker and more successful (measured in percentage of expected information items found) in finding patient information compared to the standard full-document search options. The participants also appreciated the extended query options.

Huebner-Bloder, Gudrun; Duftschmid, Georg; Kohler, Michael; Rinner, Christoph; Saboor, Samrend; Ammenwerth, Elske

2012-01-01

260

Medical Groups' Adoption Of Electronic Health Records And Information Systems Practices are encountering greater-than-expected barriers to adopting an EHR system, but the adoption rate continues to rise  

Microsoft Academic Search

We surveyed a nationally representative sample of medical group practices to assess their current use of information technology (IT). Our results suggest that adoption of electronic health records (EHRs) is progressing slowly, at least in smaller practices, al- though a number of group practices plan to implement an EHR within the next two years. Moreover, the process of choosing and

David Gans; John Kralewski; Terry Hammons; Bryan Dowd

261

Advancing Evidence-Based Care For Diabetes: Lessons From The Veterans Health Administration A highly regarded EHR system is but one contributor to the quality transformation of the VHA since the mid-1990s  

Microsoft Academic Search

The Veterans Health Administration (VHA) is a unique laboratory for using the electronic health record (EHR) to transform health care and accelerate discovery. This is particularly evident in the care of veterans with diabetes, who constitute a quarter of those served by the VHA. Although EHRs have enabled rapid learning, additional factors were nec- essary, including the lead participation of

Joel Kupersmith; Joseph Francis; Eve Kerr; Sarah Krein; Leonard Pogach; Robert M. Kolodner; Jonathan B. Perlin

262

Nitroglycerine effects on portal vein mechanics and oxidative stress in portal hypertension  

PubMed Central

AIM: ?o examine the effects of nitroglycerine on portal vein haemodynamics and oxidative stress in patients with portal hypertension. METHODS: Thirty healthy controls and 39 patients with clinically verified portal hypertension and increased vascular resistance participated in the study. Liver diameters, portal diameters and portal flow velocities were recorded using color flow imaging/pulsed Doppler detection. Cross-section area, portal flow and index of vascular resistance were calculated. In collected blood samples, superoxide anion radical (O2-), hydrogen peroxide (H2O2), index of lipid peroxidation (measured as TBARS) and nitric oxide (NO) as a marker of endothelial response (measured as nitrite-NO2-) were determined. Time-dependent analysis was performed at basal state and in 10th and 15th min after nitroglycerine (sublingual 0.5 mg) administration. RESULTS: Oxidative stress parameters changed significantly during the study. H2O2 decreased at the end of study, probably via O2- mediated disassembling in Haber Weiss and Fenton reaction; O2- increased significantly probably due to increased diameter and tension and decreased shear rate level. Consequently O2- and H2O2 degradation products, like hydroxyl radical, initiated lipid peroxidation. Increased blood flow was to some extent lower in patients than in controls due to double paradoxes, flow velocity decreased, shear rate decreased significantly indicating non Newtonian characteristics of portal blood flow. CONCLUSION: This pilot study could be a starting point for further investigation and possible implementation of some antioxidants in the treatment of portal hypertension.

Vujanac, Andreja; Jakovljevic, Vladimir; Djordjevic, Dusica; Zivkovic, Vladimir; Stojkovic, Mirjana; Celikovic, Dragan; Andjelkovic, Nebojsa; Skevin, Aleksandra Jurisic; Djuric, Dragan

2012-01-01

263

34 CFR 222.153 - How must a local educational agency request an administrative hearing?  

Code of Federal Regulations, 2013 CFR

... false How must a local educational agency request an administrative...153 How must a local educational agency request an administrative...Impact Aid Program, Portals Building, Room 4200, 1250 Maryland...hearing request to its State educational agency (SEA) (unless...

2013-07-01

264

Regional blood flows by the microsphere method: reproducibility in portal hypertensive rats and influence of a portal vein catheter  

SciTech Connect

To determine the reproducibility of splanchnic blood flow measurements by the microsphere method in rats with portal hypertension and the effects of laparotomy with portal vein cannulation, eight groups of 10 rats were studied. Microspheres were labelled with /sup 113/Sn or /sup 141/Ce. Laparotomy with portal cannulation had no significant effect in sham-operated rats. In awake portal hypertensive rats, cardiac output and splanchnic blood flow were lower in portal vein cannulated rats compared with those of non-cannulated animals. In anesthetized portal hypertensive rats blood flows were unaffected by portal cannulation, but arterial pressure and heart rate were elevated. Anesthesia also decreased portal pressure in portal hypertensive rats. We conclude that the microsphere method remains reproducible in portal hypertensive rat models. Laparotomy with portal cannulation can alter systemic and splanchnic hemodynamics in portal hypertensive rats; these effects can also be changed during pentobarbital anesthesia. Regional blood flow measurements in portal hypertensive rats should be performed in animals without portal cannulation and preferably in the awake state.

Hadengue, A.; Lee, S.S.; Koshy, A.; Girod, C.; Lebrec, D.

1988-04-01

265

Metadot Portal Server 6.4b6  

NSDL National Science Digital Library

What popular open-source portal system is used by MIT, NASA, the World Health Organization and the Chicago Medical Society? The answer to that query would be the Metadot Portal Server. The best thing about this particular system is that non-technical people can create rather powerful websites and portals through a number of clicks with the mouse. Some of the elements that users can add to these website or portals include calendars, polls, a FAQ section, discussion forums, and a number of other helpful features. Finally, the website for Metadot Portal Server contains a number of useful suggestions for new users. The Portal Server is compatible with all operating systems.

266

Portal to Asian Internet Resources  

NSDL National Science Digital Library

Designed as a cooperative project between The Ohio State University Libraries, the University of Minnesota Libraries, and the University of Wisconsin Libraries, the Portal to Asian Internet Resources (PAIR) provides a "user-friendly, searchable catalog through which scholars, students and the general public have quick and easy access to high quality Web resources originating in Asia identified, evaluated, selected and catalogued by library specialists." These resources themselves are from a variety of sources, such as those from various academic institutions, units of governance, and different non-governmental entities. The available catalogued web resources are in English and/or one of 27 Asian languages, and are selected on the basis of quality criteria such as "accuracy, authority, uniqueness, currency, relevance to scholarly research," and so on. It's quite easy to use the site, as visitors can move their cursor over an interactive map of Asia, and click on a country of interest. Additionally, they may elect to select one of the countries covered by PAIR from a list located on the site's homepage.

267

Congestive jejunopathy in portal hypertension.  

PubMed Central

Twenty six patients with portal hypertension of different aetiologies were studied for endoscopic evidence of congestive gastroduodenopathy and histological evidence of congestive gastropathy and jejunopathy. Per oral biopsies of jejunum were taken by Watson's capsule. Normal biopsy tissues obtained from the antrum (26), fundus (10), and jejunum (26) were used as controls. Endoscopy showed congestive changes in the fundus (17 cases), antrum (17), and duodenum (4). Duodenopathy correlated with changes in the antrum but not in the fundus. Histology showed an increase in the size and number of vessels in the jejunal villi ('congestive jejunopathy') in 22 patients. These correlated with histological evidence of gastropathy in the fundus but not in the antrum. The incidence of congestive jejunopathy did not correlate with the Child-Pugh score in patients with cirrhosis or with the number of sclerotherapy sessions received. Congestive jejunopathy is part of the spectrum of congestive gastroenteropathy and occurs at least as frequently as changes in the stomach and duodenum. The clinical import of these jejunal changes remains to be explained. Images Figure 1 Figure 2

Nagral, A S; Joshi, A S; Bhatia, S J; Abraham, P; Mistry, F P; Vora, I M

1993-01-01

268

The ENSEMBLES Statistical Downscaling Portal  

NASA Astrophysics Data System (ADS)

The demand for high-resolution seasonal and ACC predictions is continuously increasing due to the multiple end-user applications in a variety of sectors (hydrology, agronomy, energy, etc.) which require regional meteorological inputs. To fill the gap between the coarse-resolution grids used by global weather models and the regional needs of applications, a number of statistical downscaling techniques have been proposed. Statistical downscaling is a complex multi-disciplinary problem which requires a cascade of different scientific tools to access and process different sources of data, from GCM outputs to local observations and to run complex statistical algorithms. Thus, an end-to-end approach is needed in order to link the outputs of the ensemble prediction systems to a range of impact applications. To accomplish this task in an interactive and user-friendly form, a Web portal has been developed within the European ENSEMBLES project, integrating the necessary tools and providing the appropriate technology for distributed data access and computing. In this form, users can obtain their downscaled data testing and validating different statistical methods (from the categories weather typing, regression or weather generators) in a transparent form, not worrying about the details of the downscaling techniques and the data formats and access.

Cofino, Antonio S.; San-Martín, Daniel; Gutiérrez, Jose M.

2010-05-01

269

Combining PubMed Knowledge and EHR Data to Develop a Weighted Bayesian Network for Pancreatic Cancer Prediction  

PubMed Central

In this paper, we propose a novel method that combines PubMed knowledge and Electronic Health Records to develop a weighted Bayesian Network Inference (BNI) model for pancreatic cancer prediction. We selected 20 common risk factors associated with pancreatic cancer and used PubMed knowledge to weigh the risk factors. A keyword-based algorithm was developed to extract and classify PubMed abstracts into three categories that represented positive, negative, or neutral associations between each risk factor and pancreatic cancer. Then we designed a weighted BNI model by adding the normalized weights into a conventional BNI model. We used this model to extract the EHR values for patients with or without pancreatic cancer, which then enabled us to calculate the prior probabilities for the 20 risk factors in the BNI. The software iDiagnosis was designed to use this weighted BNI model for predicting pancreatic cancer. In an evaluation using a case-control dataset, the weighted BNI model significantly outperformed the conventional BNI and two other classifiers (k-Nearest Neighbor and Support Vector Machine). We conclude that the weighted BNI using PubMed knowledge and EHR data shows remarkable accuracy improvement over existing representative methods for pancreatic cancer prediction.

Zhao, Di; Weng, Chunhua

2011-01-01

270

Portacaval Shunt for Portal Hypertensive Gastropathy  

PubMed Central

Portal hypertensive gastropathy is a vascular disorder of the gastric mucosa distinguished by ectasia of the mucosal capillaries and submucosal veins without inflammation. During 1988 to 1993, 12 patients with biopsyproven cirrhosis (10 alcoholic, 2 posthepatitic) were evaluated and treated prospectively by portacaval shunt for active bleeding from severe portal hypertensive gastropathy. Eleven patients had been hospitalized for bleeding three to nine times previously, and one was bleeding uncontrollably for the first time. Requirement for blood transfusions ranged from 11 to 39 units cumulatively, of which 8 to 30 units were required specifically to replace blood lost from portal hypertensive gastropathy. Admission findings were ascites in 9 patients, jaundice in 8, severe muscle wasting in 10, hyperdynamic state in 9. Child's risk class was C in 7, B in 4, A in 1. Ten of the 12 patients had previously received repetitive endoscopic sclerotherapy for esophageal varices, which has been reported to precipitate portal hypertensive gastropathy. Eight patients had failed propranolol therapy for bleeding. Portacaval shunt was performed emergently in 11 patients and electively in 1, and permanently stopped bleeding in all by reducing the mean portal vein-inferior vena cava pressure gradient from 251 to 16 mm saline. There were no operative deaths, and two unrelated late deaths after 13 and 24 months. During 1 to 6.75 years of followup, all shunts remained patent by ultrasonography, the gastric mucosa reverted to normal On serial endoscopy, and there was no gastrointestinal bleeding. Recurrent portal-systemic encephalopathy developed in only 8% of patients. Quality of life was generally good. It is concluded that portacaval shunt provides definitive treatment of bleeding portal hypertensive gastropathy by eliminating the underlying cause, and makes possible prolonged survival with an acceptable quality of life.

Collins, John Craig; Sarfeh, I. James

1997-01-01

271

Detail of upper chord connection at portal, showing alterations made ...  

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

Detail of upper chord connection at portal, showing alterations made to portal strut (left), view to south - Gillespie Dam Bridge, Spanning Gila River on Old US 80 Highway, south of Gillespie Dam, Arlington, Maricopa County, AZ

272

13. Detail, connection point of end post, top chord, portal ...  

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

13. Detail, connection point of end post, top chord, portal strut, and tension members at upstream side of west portal, view to northwest. - Dry Creek Bridge, Spanning Dry Creek at Cook Road, Ione, Amador County, CA

273

Investigating the efficacy of subharmonic aided pressure estimation for portal vein pressures and portal hypertension monitoring  

PubMed Central

The efficacy of using subharmonic emissions from Sonazoid microbubbles (GE Healthcare, Oslo, Norway) to track portal vein pressures and pressure changes was investigated in 14 canines using either slow- or high-flow models of portal hypertension (PH). A modified Logiq 9 scanner (GE Healthcare, Milwaukee, WI) operating in subharmonic mode (ftransmit:2.5MHz, freceive:1.25MHz) was used to collect RF data at 10-40% incident acoustic power levels with 2-4 transmit cycles (in triplicate), before and after inducing PH. A pressure catheter (Millar Instruments, Inc., Houston, TX) provided reference portal vein pressures. At optimum insonification, subharmonic signal amplitude changes correlated with portal vein pressure changes; r ranged from -0.82 to -0.94 and from -0.70 to -0.73 for PH models considered separately or together, respectively. The subharmonic signal amplitudes correlated with absolute portal vein pressures (r: -0.71 to -0.79). Statistically significant differences between subharmonic amplitudes, before and after inducing PH, were noted (p?0.01). Portal vein pressures estimated using SHAPE did not reveal significant differences (p>0.05) with respect to the pressures obtained using the Millar pressure catheter. Subharmonic aided pressure estimation may be useful clinically for portal vein pressure monitoring.

Dave, Jaydev K.; Halldorsdottir, Valgerdur G.; Eisenbrey, John R.; Merton, Daniel A.; Liu, Ji-Bin; Zhou, Jian-Hua; Wang, Hsin-Kai; Park, Suhyun; Dianis, Scott; Chalek, Carl L.; Lin, Feng; Thomenius, Kai E.; Brown, Daniel B.; Forsberg, Flemming

2013-01-01

274

Collaborative Scenario Building: The Case of an 'Advertainment' Portal  

Microsoft Academic Search

Based on the ongoing development of a portal intended for use during the upcoming Olympics event in 2008, the portal’s main\\u000a purpose is to allow volunteers, spectators, or any other participants of the Beijing Olympics to upload self-directed video\\u000a clips and relevant advertisement clips associated with the event to the portal. Previous work has found dissimilar experiences\\u000a in interacting with

Natalie Lee-san Pang; Graeme Johanson; Sanxing Cao; Jianbo Liu; Xin Zhang

2007-01-01

275

Portal fibroblasts: Underappreciated mediators of biliary fibrosis  

PubMed Central

Portal fibroblasts are an important yet often overlooked non-parenchymal cell population in the liver. They are distinct from hepatic stellate cells, yet like stellate cells differentiate in the setting of chronic injury to fibrogenic myofibroblasts, playing an important role in collagen production in the fibrotic liver. Portal fibroblasts are located adjacent to bile duct epithelia and thus play a particularly significant role in biliary fibrosis. New data suggest that they may also have key functions independent of fibrogenesis. This review will address the definition and characteristics of PF as well as their signaling pathways, interactions with the biliary epithelium, and contributions to liver pathobiology. We conclude that portal fibroblasts are an important and multifunctional non-parenchymal cell population in need of further study.

Dranoff, Jonathan A.; Wells, Rebecca G.

2009-01-01

276

[Effect of dopamine on the portal pressure].  

PubMed

1. An infusion of 3 gamma/kg/min dopamine causes a significant increase in the renal plasma flow and the glomerulum filtration rate. This dosage does not cause a change of the mean systolic and arterial pressure. This effect may also be observed in patients with hepatic cirrhosis. 2. The wedged hepatic vein pressure, an indicator for the portal pressure, only shows a slight increase (9,46 +/- 9,41%) as compared to the initial pressure produced by the mentioned dose. Measurements of the spleen pulpa pressure, which likewise indicates the portal pressure, showed an increase of pressure up to 100% due to pressing or coughing. 3. If in the case of bleeding oesophageal varices acute renal failure might develop, the advantage of the effect of dopamine in stimulating the blood flow through the kidneys may be considered more important than the minute danger of a slight increase of the portal pressure, which might provoke haemorrhage. PMID:1220517

Benko, H; Peschl, L; Schüller, J; Neumayr, A

1975-01-01

277

Application of the smart portal in transportation  

NASA Astrophysics Data System (ADS)

Under a program sponsored by the Department of Energy, the Oak Ridge complex is developing a `Portal-of-the-Future', or `smart portal.' This is a security portal for vehicular traffic which is intended to quickly detect explosives, hidden passengers, etc. It uses several technologies, including microwaves, weigh-in-motion, digital image processing, and electroacoustic wavelet-based heartbeat detection. A novel component of particular interest is the Enclosed Space Detection System (ESDS), which detects the presence of persons hiding in a vehicle. The system operates by detecting the presence of a human ballistocardiographic signature. Each time the heart beats, it generates a small but measurable shock wave that propagates through the body. The wave, whose graph is called a ballistocardiogram, is the mechanical analog of the electrocardiograms, which is routinely used for medical diagnosis. The wave is, in turn, coupled to any surface or object with which the body is in contact. If the body is located in an enclosed space, this will result in a measurable deflection of the surface of the enclosure. Independent testing has shown ESDS to be highly reliable. The technologies used in the smart portal operate in real time and allow vehicles to be checked through the portal in much less time than would be required for human inspection. Although not originally developed for commercial transportation, the smart portal has the potential to solve several transportation problems. It could relieve congestion at international highway border crossings by reducing the time required to inspect each vehicle while increasing the level of security. It can reduce highway congestion at the entrance of secure facilities such as prisons. Also, it could provide security at intermodal transfer points, such as airport parking lots and car ferry terminals.

Kercel, Stephen W.; Baylor, Vivian M.; Dress, William B.; Hickerson, Tim W.; Jatko, W. Bruce; Labaj, Leo E.; Muhs, Jeffrey D.; Pack, Richard M.

1997-02-01

278

Portal Hypertension Secondary to Spontaneous Arterio-Portal Venous Fistulas: Transcatheter Arterial Embolization with n-Butyl Cyanoacrylate and Microcoils  

SciTech Connect

We report a 73-year-old man with recurrent variceal bleeding due to portal hypertension caused by multiple intrahepatic arterio-portal venous fistulas, which were successfully occluded by embolization with n-butyl cyanoacrylate and micro-coils.

Yamagami, Takuji; Nakamura, Toshiyuki; Nishimura, Tsunehiko [Department of Radiology, Kyoto Prefectural University of Medicine, 465 Kajii-chyo, Kawaramachi-Hirokoji, Kamigyo-Ku, Kyoto, 602-0841 (Japan)

2000-09-15

279

Inflammation: a way to understanding the evolution of portal hypertension  

Microsoft Academic Search

BACKGROUND: Portal hypertension is a clinical syndrome that manifests as ascites, portosystemic encephalopathy and variceal hemorrhage, and these alterations often lead to death. HYPOTHESIS: Splanchnic and\\/or systemic responses to portal hypertension could have pathophysiological mechanisms similar to those involved in the post-traumatic inflammatory response. The splanchnic and systemic impairments produced throughout the evolution of experimental prehepatic portal hypertension could be

María-Angeles Aller; Jorge-Luis Arias; Arturo Cruz; Jaime Arias

2007-01-01

280

Idiopathic portal hypertension (perisinusoidal fibrosis) after renal transplantation  

Microsoft Academic Search

We report the cases of two renal transplant recipients suffering from idopathic portal hypertension, a condition characterised by increased portal venous pressure in the absence of both histological lesion of the liver and obstruction of the portal vein. In these two patients, perisnusoidal fibrosis, invisible by light microscopy, was demonstrated by electron microscopy; it is suggested that partial obstruction of

C Nataf; G Feldmann; D Lebrec; C Degott; J M Descamps; B Rueff; J P Benhamou

1979-01-01

281

Impaired oxygenation of gastric mucosa in portal hypertension  

Microsoft Academic Search

Increased susceptibility to mucosal damage is a prominent feature of portal hypertensive gastropathy. Since the portal hypertensive gastric mucosa has extensive microvascular changes, we postulated that the increased sensitivity to mucosal damage could have an ischemic basis. We measured distribution of gastric serosal and mucosal oxygenation in a group of portal hypertensive and sham-operated rats, and then studied the effects

I. J. Sarfeh; H. Soliman; K. Waxman; M. Coccia; E. B. Rypins; H. X. Bui; A. Tarnawski

1989-01-01

282

Base of tongue varices associated with portal hypertension  

PubMed Central

A symptomatic case of tongue base varices in a patient with portal hypertension secondary to liver cirrhosis is presented. There are no previously documented cases in the world literature. Oesophageal varices may not be the only source of expectorated blood in a patient with portal hypertension.???Keywords: portal hypertension; lingual; tongue; varicose vein

Jassar, P; Jaramillo, M; Nunez, D

2000-01-01

283

An enhanced model for searching in semantic portals  

Microsoft Academic Search

Semantic Portal is the next generation of web portals that are powered by Semantic Web technologies for improved information sharing and exchange for a community of users. Current methods of searching in Semantic Portals are limited to keyword-based search using information retrieval (IR) techniques, ontology-based formal query and reasoning, or a simple combination of the two. In this paper, we

Lei Zhang; Yong Yu; Jian Zhou; ChenXi Lin; Yin Yang

2005-01-01

284

Successful arterial embolization of arteriovenous fistula in the portal circulation  

Microsoft Academic Search

We successfully performed arterial embolization of an arteriovenous fistula between the left gastric artery and vein. The increased blood flow in the portal vein via the left gastric vein and the arteriovenous fistula induced severe portal hypertension. After obliteration of the left gastric artery, the arteriovenous fistula was not opacified on angiography and the portal hypertension improved.

Tetsuo Nakamura; Yoshinori Isobe; Eiko Ueno; Yumi Kondoh; Izumi Yoshida; Hiroshi Obata

1992-01-01

285

PORTAL WEB GEO-ESCOLA: UMA PONTE ENTRE CONCEITOS DE GEOCIÊN- CIAS E OS PROFESSORES DE ENSINO FUNDAMENTAL E MEDIO GEO-SCHOOL WEBSITE: A BRIDGE BETWEEN CONCEPTS OF GEOSCIENCES AND TEACHERS OF BASIC AND MEDIUM-LEVEL EDUCATION  

Microsoft Academic Search

The Geo-School website belongs to the Geo-School project; both have been born from the idea that, in the Brazilian basic education, the geosciences contents offer a rich contribution for the formation of students pupils, although their insertion is too low in these school levels. The website takes advantage of digital didactic material generated on interdisciplinary topics as Earth dynamics, water

CELSO D. R. CARNEIRO; VLANDER V. SIGNORETTI; RONALDO BARBOSA; JOSELI M. PIRANHA

286

Pathophysiology of Portal Hypertension and Esophageal Varices  

PubMed Central

Esophageal varices are the major complication of portal hypertension. It is detected in about 50% of cirrhosis patients, and approximately 5–15% of cirrhosis patients show newly formed varices or worsening of varices each year. The major therapeutic strategy of esophageal varices consists of primary prevention, treatment for bleeding varices, and secondary prevention, which are provided by pharmacological, endoscopic, interventional and surgical treatments. Optimal management of esophageal varices requires a clear understanding of the pathophysiology and natural history. In this paper, we outline the current knowledge and future prospect in the pathophysiology of esophageal varices and portal hypertension.

Maruyama, Hitoshi; Yokosuka, Osamu

2012-01-01

287

29 CFR 790.5 - Effect of Portal-to-Portal Act on determination of hours worked.  

Code of Federal Regulations, 2013 CFR

...PORTAL-TO-PORTAL ACT OF 1947 ON THE FAIR LABOR STANDARDS ACT OF 1938 Provisions Relating...compensation provisions of the Fair Labor Standards Act to activities of employees...within the meaning of the Fair Labor Standards Act if the Portal Act had...

2013-07-01

288

Astronomia.pl: Portal activity in 2006-2007  

NASA Astrophysics Data System (ADS)

We present the latest activity of Astronomia.pl - the Polish Astronomy Portal, the most popular internet portal about astronomy in Poland. Astronomia.pl is a wide-ranging portal, covering news, a database of articles, books, lectures, an astronomical calendar, a newsletter, a virtual library of diploma theses, a discussion forum, chat, galleries, a catalogue of websites and other services. The portal also owns several additional services like an on-line lexicon with biographies of astronomers, a website about Polish planetariums and a server for websites created by astronomy amateurs. There is also small part of the portal in English.

Czart, K.; Pomierny, J.

2008-06-01

289

Subclinical portal-systemic encephalopathy in a child with congenital absence of the portal vein  

Microsoft Academic Search

A 6-year-old girl with congenital absence of the portal vein (CAPV) who had persistent hyperammonemia due to a congenital portosystemic shunt is reported. The patient only exhibited mild intention tremor, without any apparent neurological manifestations of portal-systemic encephalopathy. However, magnetic resonance imaging of the head showed white matter atrophy with ventricular dilatation, which is thought to represent subclinical brain damage

Hiroyuki Wakamoto; Kohji Manabe; Hitoshi Kobayashi; Masatoshi Hayashi

1999-01-01

290

Characterization of a high-elbow, fluoroscopic electronic portal imaging device for portal dosimetry  

Microsoft Academic Search

The application of a newly developed fluoroscopic (CCD-camera based) electronic portal imaging device (EPID) in portal dosimetry is investigated. A description of the EPID response to dose is presented in terms of stability, linearity and optical cross-talk inside the mechanical structure. The EPID has a relatively large distance (41 cm on-axis) between the fluorescent screen and the mirror (high-elbow), which

J. C. J. de Boer; B. J. M. Heijmen; K. L. Pasma; A. G. Visser

2000-01-01

291

The Catalog as Portal to the Internet.  

ERIC Educational Resources Information Center

|This paper examines the potential of the library catalog to serve as a portal to the Internet. The first section provides an overview of the development of the catalog, including the emergence of the union catalog, standardization of cataloging practice, MARC format, and the insufficiency of resources to catalog all the titles acquired by…

Thomas, Sarah E.

292

Portal vein embolization before major hepatectomy  

Microsoft Academic Search

Abstract Abstract Abstract Abstract To discuss the rationale, techniques and the unsolved issues regarding preoperative portal vein embolization (PVE) before major hepatectomy. After a systematic search of Pubmed, we reviewed and retrieved literature related to PVE. Preoperative PVE is an approach that is gaining increasing acceptance in the preoperative treatment of selected patients prior to major hepatic resection. Induction of

Hai Liu; Yong Fu

293

A neutron portal monitor for vehicles  

SciTech Connect

We have designed and built a portal vehicle monitoring systems for detecting neutron-emitting special nuclear material (SNM) such as plutonium. Monte Carlo calculations were used to optimize the design of the 15-cm-deep x 122-cm-high x 244-cm-long detector chambers, which utilize /sup 3/He proportional counters inside a hollow polyethylene box. Results for a variety of parametric studies, including polyethylene thickness and detector number, are described. Our experimental measurements are in good agreement with the computer calculations. The monitor's decision logic uses the Sequential Probability Ratio Test (SPRT) on Poisson distributed counting data, which is superior to other statistical tests in many applications. We performed computer simulations of the SPRT logic to determine expected false-positive decision rates. A controller unit of our design that uses this SPRT was built commercially. The cost of the complete monitoring system is similar to that of vehicle portal monitors that detect gamma rays. This new neutron monitor can serve as an addition to standard gamma-ray vehicle portals or as a stand-alone portal monitor in particular safeguards monitoring situations. The monitor is being tested at Los Alamos and is scheduled for in-plant evaluation of another DOE facility in 1987. 7 refs.

Coop, K.L.; Fehlau, P.E.; Atwater, H.F.

1987-07-12

294

Diagnosis and hemodynamic assessment of portal hypertension.  

PubMed

Rational treatment of portal hypertensive complications requires a knowledge of the cause of portal hypertension and an assessment of the severity of liver disease. In the United States, chronic liver disease, usually due to alcohol, is the most common underlying cause. The history, physical examination, and laboratory analysis are usually sufficient to confirm the presence of underlying liver disease. If there is any question as to the etiology of portal hypertension, however, a more complete evaluation is required, whether the presenting complication is ascites, variceal bleeding, or hypersplenism. Usually, such an evaluation will require a liver biopsy, portal pressure measurement, and angiography. Occasionally, a noninvasive evaluation will be sufficient, but the value of these noninvasive parameters is still under investigation. Surgical mortality generally depends on the severity of the liver disease. Therefore, surgical intervention must be carefully considered in comparison to other therapeutic modalities depending on the patient's hepatic functional reserve. Secondary bacterial peritonitis due to perforation requires surgery regardless of the severity of the underlying liver disease. PMID:2181705

Hoefs, J C; Jonas, G M; Sarfeh, I J

1990-04-01

295

Survival following portal venous air embolization  

Microsoft Academic Search

The first reported case of nonfatal air embolization of the portal venous system was observed in a patient with chronic ulcerative colitis subsequent to barium-air contrast enema examination. The literature is reviewed and pathogenetic mechanisms are discussed. It is suggested that this phenomenon is probably overlooked in other surviving cases, and careful roentgenographic evaluation of the right upper quadrant will

Harold P. Lazar

1965-01-01

296

A Collaborative Portal for Ocean Observatories  

Microsoft Academic Search

A Collaborative Ocean Observatory Portal (COOP) has been developed to enable distributed investigators to collaboratively operate ocean observatory systems. COOP is being created within the Autonomous Ocean Sampling Network program to support the Adaptive Sampling and Prediction (ASAP) field experiment that occurred in Monterey Bay in the summer of 2006. ASAP involved the day-to-day participation of a large group of

Michael A Godin; James G Bellingham; Kanna Rajan; Naomi Leonard; Yi Chao

2006-01-01

297

Regulations.gov Federal Regulatory Portal  

ERIC Educational Resources Information Center

|The Regulations.gov Online Rulemaking Project is 1 of the 24 e-Government Initiatives on the President's Management Agenda (PMA), which was announced by the White House in 2001. The Regulations.gov Web site is the central electronic rulemaking portal for the federal government. Through a single Web site, citizens can search, view, and comment on…

Ashlin, John; Davis, Richard; Dalecky, Selene; Grasso, Richard; LaPlant, Lisa; Morales, Oscar; Nelson, Jennifer; White, Michael; Whitt, Sharon A.

2004-01-01

298

A Semantic Web Portal with HLT Capabilities  

Microsoft Academic Search

In this paper we will present a new form of Semantic Web portal using Human Language Technologies (HLT). Our system provide the means to annotate documents with metadata, populate a knowledge base according to the corresponding domain ontology and most of all, update the linguistic resources with all the new extracted information in order to improve the performance of the

Florence Amardeilh; Thomas Francart

299

Radiation portal monitor system and method  

Microsoft Academic Search

A portal monitoring system has a cosmic ray charged particle tracker with a plurality of drift cells. The drift cells, which can be for example aluminum drift tubes, can be arranged at least above and below a volume to be scanned to thereby track incoming and outgoing charged particles, such as cosmic ray muons, whilst also detecting gamma rays. The

Christopher Morris; Konstantin N. Borozdin; J. Andrew Green; Gary E. Hogan; Mark F. Makela; William C. Priedhorsky; Alexander Saunders; Larry J. Schultz; Michael J. Sossong

2009-01-01

300

Radiation field edge detection in portal images  

Microsoft Academic Search

In fractionated radiation therapy with high energy photon beams, patient set-up is verified by analysing the position of the radiation field relative to the patient anatomy. This analysis is performed in an X-ray film, which has been exposed at the beam exit side of the patient during irradiation. Electronic portal image detectors, such as fluorescent screens, scanning diode arrays, or

J. Bijhold; K. G. A. Gilhuijs; M. van Herk; H. Meertens

1991-01-01

301

Electronic portal imaging using Cherenkov radiation  

Microsoft Academic Search

Most electronic portal imaging devices (EPIDs) developed so far use a Cu plate\\/phosphor screen to absorb x rays. The approach permits the use of a thin screen (˜2 mm thick) to obtain a high spatial resolution, however this results in a low quantum efficiency (QE) for high energy megavoltage (MV) x rays. In addition, the high atomic number (Z) phosphor

Isuru Silva

2009-01-01

302

Electronic portal imaging using Cherenkov radiation  

Microsoft Academic Search

Most electronic portal imaging devices (EPIDs) developed so far use a Cu plate\\/phosphor screen to absorb x rays. The main problem with this approach is that the Cu plate\\/phosphor screen must be thin (~ 2 mm) in order to obtain a high spatial resolution, resulting in a low quantum efficiency (QE) for megavoltage (MV) × rays (typically 2-4%). In addition,

Isuru C. Silva; G. Pang

2008-01-01

303

Tomotherapeutic portal imaging for radiation treatment verification  

Microsoft Academic Search

In their tomotherapy concept Mackie and co-workers proposed not only a new technique for IMRT but also an appropriate and satisfactory method of treatment verification. This method allows both monitoring of the portal dose distribution and imaging of the patient anatomy during treatment by means of online CT. This would enable the detection of inaccuracies in dose delivery and patient

B. M. Hesse; L. Spies; B. A. Groh

1998-01-01

304

Cross-Cultural Dimensions of Internet Portals.  

ERIC Educational Resources Information Center

|Discussion of cultural influences on new technologies focuses on an analysis of full-service national Web portals from different countries that investigated whether the adoption of new technologies resulted in cultural convergence or divergence. Results showed differences in appearance and features offered that can be attributed to cultural…

Zahir, Sajjad; Dobing, Brian; Hunter, M. Gordon

2002-01-01

305

ExPASy: SIB bioinformatics resource portal  

PubMed Central

ExPASy (http://www.expasy.org) has worldwide reputation as one of the main bioinformatics resources for proteomics. It has now evolved, becoming an extensible and integrative portal accessing many scientific resources, databases and software tools in different areas of life sciences. Scientists can henceforth access seamlessly a wide range of resources in many different domains, such as proteomics, genomics, phylogeny/evolution, systems biology, population genetics, transcriptomics, etc. The individual resources (databases, web-based and downloadable software tools) are hosted in a ‘decentralized’ way by different groups of the SIB Swiss Institute of Bioinformatics and partner institutions. Specifically, a single web portal provides a common entry point to a wide range of resources developed and operated by different SIB groups and external institutions. The portal features a search function across ‘selected’ resources. Additionally, the availability and usage of resources are monitored. The portal is aimed for both expert users and people who are not familiar with a specific domain in life sciences. The new web interface provides, in particular, visual guidance for newcomers to ExPASy.

Artimo, Panu; Jonnalagedda, Manohar; Arnold, Konstantin; Baratin, Delphine; Csardi, Gabor; de Castro, Edouard; Duvaud, Severine; Flegel, Volker; Fortier, Arnaud; Gasteiger, Elisabeth; Grosdidier, Aurelien; Hernandez, Celine; Ioannidis, Vassilios; Kuznetsov, Dmitry; Liechti, Robin; Moretti, Sebastien; Mostaguir, Khaled; Redaschi, Nicole; Rossier, Gregoire; Xenarios, Ioannis; Stockinger, Heinz

2012-01-01

306

EMERGING REVENUE MODELS IN SOCIAL NETWORKING PORTALS  

Microsoft Academic Search

This paper outlines the history of virtual communities and explores the current state of for- profit Web sites that use virtual communities and related strategies to attract visitors. The paper focuses on one type of virtual community Web site that has recently shown the potential to be very profitable, the targeted social networking portal. The paper explores the characteristics of

Gary P. Schneider; Carol M. Bruton

2006-01-01

307

Creative Problem-Solving Software and Portals  

ERIC Educational Resources Information Center

The available research dealing with information technology and creativity has been limited. There is an obvious need to explore this area. Fortunately there is some available software and portals that have undertaken this important topic. This research starts by discussing the value of information technology as a major input to sustain and…

Hijazi, Sam; Smith, M. Leigh; Alvarado-Vazquez, Edgardo

2004-01-01

308

Percutaneous transhepatic portal catheterization-modification of Chiba method and portal vein pressure in liver diseases.  

PubMed

Percutaneous transhepatic portal catheterization was performed in 68 cases of liver diseases in the 2 year period from 1978 to 1980. The Chiba University method was modified. Portal vein catheterization was successful in 61 cases (90%). Selective splenic vein catheterization was successful in 55 of the 61 cases (90%) and selective superior mesenteric vein catheterization in 59 cases (97%). The liver was punctured an average of 4.6 times in order to successfully insert the catheter into the main portal vein, and the number of punctures was less than 10 in 57 of the 61 cases (93%). The portal vein pressure was 310+/-67 mm H2O in idiopathic portal hypertension (8 cases), 290+/-83 in liver cirrhosis (33 cases), 193+/-71 in chronic hepatitis (7 cases) and 166+/-50 in fatty liver (4 cases). Portal vein pressure rose from 205+/-75 to 380+/-55 mm H2O in 11 cases after forced Valsalva maneuver. No major complications were encountered. PMID:7136852

Ito, T; Itoshima, T; Kiyotoshi, S; Kawaguchi, K; Ogawa, H; Kitadai, M; Hattori, S; Maruyama, T; Tomoda, J; Morichika, S; Munetomo, F; Nagashima, H

1982-04-01

309

MathNEXUS: Mathematics Portal  

NSDL National Science Digital Library

This collection of mathematics resources and project activities, produced by a partnership between Western Washington University, Skagit Valley College, Whatcom Community College, and adjacent school districts, spans K-14 education levels and showcases innovative ideas in math pegadogy as well as a range of learning material for students. The partnership is dedicated to increasing mathematics achievement levels for all students and narrowing differences between diverse student populations.

2006-09-24

310

An Online Image Analysis Tool for Science Education  

ERIC Educational Resources Information Center

|This paper describes an online image analysis tool developed as part of an iterative, user-centered development of an online Virtual Learning Environment (VLE) called the Education through Virtual Experience (EVE) Portal. The VLE provides a Web portal through which schoolchildren and their teachers create scientific proposals, retrieve images and…

Raeside, L.; Busschots, B.; Waddington, S.; Keating, J. G.

2008-01-01

311

Black Canyon Outreach Education  

NSDL National Science Digital Library

This portal features links to K-12 outreach education units on the Black Canyon of the Gunnison National Park and Curecanti National Recreation Area. They focus on topics such as trees, habitats, fossils, animal adaptations, seasons, weather, the water cycle, mapping and geology. There are also downloadable activities for sutdents to perform either before or after their visits to the area.

312

Collateral ablation improves portal perfusion after partial portacaval shunt.  

PubMed

Small-diameter portacaval H-grafts (partial shunts) effectively abolish bleeding from esophageal varices. Goals are 1) to prevent variceal hemorrhage by subtotal portal decompression, and 2) to minimize postshunt encephalopathy by maintaining substantial residual pressure and prograde flow in the portal vein. To reduce spontaneous shunting of portal blood away from the liver, we advocate ablation of collateral vessels after partial shunts. Others have performed partial shunts without collateral ablation. We postulated that ablation of collateral vessels would augment portal perfusion pressure and preserve prograde portal flow after partial shunts. In 15 patients undergoing 8 or 10 mm portacaval H-grafts, portal pressure was measured intraoperatively before and after ligation of principal venous collaterals. In another 13 patients, collateral embolization was performed during postoperative portography. The degree of portal perfusion was scored. Pressure measurements demonstrated a mean rise in portal pressure of 2.8 cm saline after ligation (P = 0.025). Angiographic perfusion scores after embolization improved by a mean of 0.57 points on a 4 point scale (P = 0.032). We conclude that intraoperative collateral ligation augments residual portal pressures and that postoperative collateral embolization improves portal flow patterns. Since both observed effects have been associated with decreased postshunt encephalopathy rates, ablation of collateral vessels must be an integral component of the partial portacaval shunt. PMID:7668459

Collins, J C; Conroy, R M; Sarfeh, I J

1995-10-01

313

Bilingual Education and the Law: An Overview.  

ERIC Educational Resources Information Center

|There have been four major court decisions affecting bilingual education: Lau v. Nichols, Serna v. Portales, Aspira v. the New York Board of Education and Keyes v. Denver School District No. 1. Lau v. Nichols was an action brought by non-English-speaking Chinese-origin students claiming to be denied an education because they could not comprehend…

Grant, Joseph

314

A Posteromedial Working Portal for Arthroscopic Subacromial Decompression and Acromioclavicular Joint Arthroplasty  

Microsoft Academic Search

Summary: Arthroscopic subacromial decompression is traditionally performed through a posterolateral viewing portal and a lateral working portal. We describe the same procedure by using a posterolateral viewing portal and a posteromedial working portal. Because this portal is in the same sagittal plane as the ipsilateral acromioclavicular joint, it allows performing an arthroscopic excision arthroplasty of this joint.Arthroscopy: The Journal of

Geert Declercq; Dirk Petré; Kris De Mulder

1999-01-01

315

Hemodynamic Effects of Eight-Day Octreotide and Propranolol Administration in Portal Hypertensive Rats  

Microsoft Academic Search

Octreotide and propranolol are both effective portal hypotensive drugs in the control or prevention of variceal bleeding. The present study was undertaken to investigate the hemodynamic effects of octreotide and propranolol, alone or in combination, in portal hypertensive rats. Portal hypertension was induced by partial portal vein ligation. Portal hypertensive rats were allocated into one of the four groups: vehicle

Yi-Tsau Huang; Yuh-Ren Cheng; Han-Chieh Lin; Ming-Chih Hou; Shou-Dong Lee; Chuang-Ye Hong

1998-01-01

316

Facilitation of gastric motility induced by portal infusion of hyper- and hypotonic solution in rats  

Microsoft Academic Search

The effects of the portal infusion of hyper- and hypotonic solution on gastric motility in rats were investigated. The infusion of hypertonic saline into the portal vein (portal infusion) elicited a significant enhancement of gastric contractile activity. The portal infusion of water also produced this enhancement. However, the portal infusion of isotonic saline showed no significant enhancement; nor did the

Motoi Kobashi; Masatoshi Mizutani; Akira Adachi

1998-01-01

317

Education  

ERIC Educational Resources Information Center

This book will be an original and indispensable resource for all who believe in the importance of art in the wider educational realm. Framing the recent "educational turn" in the arts within a broad historical and social context, this anthology raises fundamental questions about how and what should be taught in an era of distributive rather than…

Allen, Felicity

2011-01-01

318

Global Biodiversity Information Facility: Biodiversity Data Portal  

NSDL National Science Digital Library

This Biodiversity Data Portal website is hosted by the Global Biodiversity Information Facility (reported on in the Scout Report for Science & Engineering, March 14, 2001), an international organization committed to providing "free and universal access to data regarding the world's diversity." As its name indicates, the Data Portal provides access to biodiversity information from around the world and allows site visitors to browse for taxonomic data organized by Kingdom of Life, country, or data providers. Visitors can search for specimen or field observation data by data providers as well. The site also contains a search engine with search options that include many different countries, scientific name, common name in any language, English name, and more. This website is available in French, English, and Danish. Note: Prior to viewing data, site visitors must first agree to the Global Biodiversity Information Facility (GBIF) Interim Data Use Agreement.

319

Hepatic fibrosis, stellate cells, and portal hypertension.  

PubMed

Hepatic fibrogenesis is the common result of injury to the liver. It is believed to be a critical factor that leads to hepatic dysfunction and may be important in portal hypertension. The fibrogenic response is a complex process in which accumulation of extracellular matrix proteins, tissue contraction, and alteration in blood flow are prominent. A critical event in fibrogenesis is activation of resident perisinusoidal cells that are termed "hepatic stellate cells". Stellate cell activation is characterized by many important phenotypes, including enhanced extracellular matrix synthesis and prominent contractility. Given the central role of stellate cell activation in hepatic fibrogenesis (and portal hypertension), effective therapy for hepatic fibrogenesis is most likely will be directed at this event. PMID:17162223

Rockey, Don C

2006-08-01

320

Salvianolic Acid B Reducing Portal Hypertension Depends on Macrophages in Isolated Portal Perfused Rat Livers with Chronic Hepatitis  

PubMed Central

This study is aimed to investigate the effects of Sal B on portal hypertension (PH). PH with chronic hepatitis was induced by carbon tetrachloride (CCl4) in rats. The model was confirmed with elevated portal pressures and increased serum CD163 levels. The inducible nitric oxide synthase (iNOS) or heme oxygenase-1 (HO-1) in portal triads was assessed. The isolated portal perfused rat liver (IPPRL) was performed at d0, d28, d56 , and d84 in the progression of chronic hepatitis. After constricting with phenylephrine, the portal veins were relaxed with Sal B. The EC50 of Sal B for relaxing portal veins was ?2.04 × 10?9, 7.28 × 10?11, 1.52 × 10?11, and 8.44 × 10?11?mol/L at d0, d28, d56, and d84, respectively. More macrophages infiltrated in portal triads and expressed more iNOS or HO-1 as PH advanced. The areas under the curve (AUCs) of Sal B for reducing PH were positively correlated with the levels of iNOS or HO-1 in portal triads, and so did with serum CD163 levels. Sal B reduces PH in IPPRL with chronic hepatitis, via promoting portal relaxation due to macrophage-originated NO or CO in portal triads, partly at least.

Zhao, Xin; Jia, Hongmei; Yang, Shijun; Liu, Yuetao; Deng, Bo; Xu, Xueyan; Zhang, Tao; Zhou, Hang; Zu, Chengzhe; Yin, He; Li, Ting; Song, Yijun; Wang, Yueqi; Li, Pengtao; Zou, Zhongmei; Cai, Dayong

2012-01-01

321

Portal protein diversity and phage ecology  

Microsoft Academic Search

Summary Oceanic phages are critical components of the global ecosystem, where they play a role in microbial mortality and evolution. Our understanding of phage diversity is greatly limited by the lack of useful genetic diversity measures. Previous studies, focus- ing on myophages that infect the marine cyano- bacterium Synechococcus, have used the coliphage T4 portal-protein-encoding homologue, gene 20 (g20), as

Matthew B. Sullivan; Maureen L. Coleman; Vanessa Quinlivan; Jessica E. Rosenkrantz; Alicia S. DeFrancesco; G. Tan; Ross Fu; Jessica A. Lee; John B. Waterbury; Joseph P. Bielawski; Sallie W. Chisholm

2008-01-01

322

Middle School Portal: Energy Transfers and Transformations  

NSDL National Science Digital Library

This standards-based module for the middle grades offers an array of online lessons and activities to build a unit on energy transformation. It was developed to help students understand how energy moves and changes form, essential to build a foundation in energy interactions. The hands-on activities explore kinetic/potential energy, thermal conductivity, radiation, and heat transfer. This resource is part of the Middle School Portal, the math/science pathway of the National Science Digital Library.

2011-03-11

323

Fatal portal thrombosis after laparoscopic Nissen fundoplication.  

PubMed

Portal and mesenteric vein thrombosis is a very uncommon complication of laparoscopic surgery, especially after anti-reflux procedures. We report the case of a twenty-year-old man with a history of alcohol and cocaine consumption. A Nissen fundoplication was performed. The patient received a single 20-mg dose of enoxaparin (Clexane, Aventis Pharma, Spain) two hours before surgery for antithrombotic prophylaxis. On the seventh postoperative day the patient had a portal and mesenteric venous thrombosis, which was confirmed at laparotomy, with both extensive small-intestine necrosis and partial colon necrosis. Despite anticoagulant therapy, the patient died 24 hours later. Surgical findings were confirmed at necropsy. Portal and mesenteric venous thrombosis is an uncommon but severe and even fatal complication after laparoscopic anti-reflux surgery. When other pro-thrombotic, predisposing conditions such as laparoscopic surgery and cocaine consumption are present, the usual prophylactic doses of low molecular weight heparin might not be sufficient to protect against this life-threatening complication. PMID:16266239

García Díaz, R A; Rodríguez-Sanjuán, J C; Domínguez Díez, R A; García-Barón Pórtoles, A; Trugeda Carrera, M S; de la Torre Carrasco, F; Gómez-Fleitas, M

2005-09-01

324

Development of a trace explosives detection portal for personnel screening  

SciTech Connect

The authors discuss the development, design, and operation of a walk-through trace detection portal designed to screen personnel for explosives. Developed at Sandia National Laboratories (SNL) with primary funding from the Federal Aviation Administration (FAA) and additional support from the Department of Energy office of Safeguards and Security, this portal is intended primarily for use in airport terminals and in other localities where a very high throughput of pedestrian traffic is combined with stringent security requirements. The portal is capable of detecting both vapor and particulate contamination, with the collection of explosive material being based upon the entrainment of that material in air flows over the body of the person being screened. This portal is capable of detecting most types of common high explosives of interest to the FAA. The authors discuss the results of field testing of the portal in the Albuquerque International Airport in September, 1997 and more recent steps towards commercialization of the portal.

Parmeter, J.E.; Linker, K.L.; Rhykerd, C.L. Jr.; Bouchier, F.A.; Hannum, D.W.

1998-08-01

325

Use of electronic health record structured text and its payoffs. The approach and barriers to using structured text in EHR to document care encounters.  

PubMed

The Military Health System (MHS) deployed its electronic health record (EHR), AHLTA to Military Treatment Facilities (MTFs) around the world. This paper focuses on the approach and barriers to using structured text in AHLTA to document care encounters and illustrates the direct correlation between the use of structured text and achievement of expected benefits. AHLTA uses commercially available products, a health data dictionary and standardized medical terminology, enabling the capture of structured computable data. With structured text stored in the AHLTA Clinical Data Repository (CDR), the MHS has seen a return on its EHR investment with improvements in the accuracy and completeness of coding and the documentation of care provided. Determining the aspects of documentation where structured text is most beneficial, as well as the degree of structured text needed has been a significant challenge. This paper describes how the economic value framework aligns the enterprise strategic objectives with the EHR investment features, performance metrics and expected benefits. The framework analyses focus on return on investment calculations, baseline assessment and post-implementation benefits validation. Cost avoidance, revenue enhancements and operational improvements, such as evidence-based medicine and medical surveillance can be directly attributed to use structured text. PMID:19267002

Benge, James; Beach, Thomas; Gladding, Connie; Maestas, Gail

2008-01-01

326

Evaluation of Ludlum Corporation's portable portal monitor and comparison with the HML'S existing portal monitors.  

PubMed

Since the Human Monitoring Laboratory compared two types of portal monitors (the P3 and the MiniSentry) that could be field deployed in response to an emergency, two more brands have been added to the inventory. This paper summarizes a comparison of the capabilities of the previous portal monitors with the two additions: the Thermo Eberline TPM-903B and the Ludlum 52-1-1. The comparison shows that none of the portals greatly exceed the others in capability, but that each will have their place during emergency deployment; however, when beta radiation or low energy gamma radiation is suspected, then the best choice would be the Ludlum 52-1-1. PMID:22470004

Kramer, Gary H; Capello, Kevin; Hauck, Barry M

2012-05-01

327

Computed tomography angiography demonstration of portal vein anomaly type V.  

PubMed

Computed tomography (CT) angiography is fast replacing the diagnostic conventional angiography and digital subtraction angiography. A case of a type V portal vein anomaly, which was diagnosed by Doppler ultrasound and confirmed on CT angiography, is presented. Demonstration of the portal vein branching pattern and its anomalies assumed importance and significance after split liver and segmental transplantation techniques were developed. There are 5 variations of portal vein branching that have been described. PMID:15100539

Balaji, Malapally Chowda Reddy; Kalita, Aroop Jyoti; Ravindranath, Kancharla; Mathai, Varughese; Sreekanth, Kandikattu

328

User-Centered Design for a Voice Portal  

Microsoft Academic Search

After a brief overview of voice portal technology, with special attention paid to Polish, we discuss some aspects of user-centered\\u000a design and its influence on usability of the proposed solution. We describe the issues of voice portal preparation on the\\u000a example of Warsaw city transportation hotline and main components of the voice portal. The system is effective and supports\\u000a users

Krzysztof Marasek; Lukasz Brocki; Danijel Korzinek; Krzysztof Szklanny; Ryszard Gubrynowicz

2009-01-01

329

[Electronic portal imaging device (EPID) portal image filtering for simplifying registration on radiation therapy].  

PubMed

A simple method for improving the quality of electronic portal imaging device (EPID) portal images was proposed for the reduction of the burden on the registration between digital reconstruction radiography (DRR) and EPID portal images in radiation therapy. Conventional image filtering techniques in the spatial-frequency domain are applied to the proposed method. While a band-pass filter (BPF) is employed to extract spatial-frequency components included in the bone edge, a high-pass filter (HPF) is employed to obtain the effect corresponding to the general dynamic range compression. The band-pass filtered image is weighted by a parameter for adjusting the bone edge enhancement, and is added to the high-pass filtered image. This method was applied to the portal images in the neck region. In the image obtained by the proposed filtering, the bone edge was clearly observed. In addition, soft tissue structures were identified in the same display settings (window level/width; WL/WW) as the bone edge observation; that is, the adjustment of the display settings was not required for the observation of each object. These results suggested that both bone edge enhancement and dynamic range compression would be achieved successfully. It was estimated that the images obtained by the proposed method were more appropriate for the registration than conventional portal images, in 47 times registrations of 50 times in total (the registrations by five radiological technologists in ten patients). The proposed method was concluded to be useful for improving the quality of portal images, enabling the efficient registration. PMID:22687904

Yamada, Masanori; Ohkubo, Masaki; Kayugawa, Akihiro; Yamada, Hiromi; Matsuura, Masataka; Miura, Takashi; Kusumoto, Toshihisa

2012-01-01

330

The Incidence of Portal Vein Thrombosis at Liver Transplantation  

PubMed Central

The incidence of portal vein thrombosis was examined in 885 patients who received orthotopic liver transplantations for various end-stage liver diseases between 1989 and 1990. The thrombosis was classified into four grades. Grade 1 was thrombosis of intrahepatic portal vein branches, grade 2 was thrombosis of the right or left portal branch or at the bifurcation, grade 3 was partial obstruction of the portal vein trunk, and grade 4 was complete obstruction of the portal vein trunk. Among the 849 patients without previous portosystemic shunt, 14 patients (1.6%) had grade 1, 27 patients (3.2%) had grade 2, 27 patients (3.2%) had grade 3 and 49 patients (5.8%) had grade 4 portal vein thrombosis. The incidence of portal vein thrombosis was highest (34.8%) in the patients with hepatic malignancy in the cirrhotic liver, followed by those with Budd-Chiari syndrome (22.2%) and postnecrotic cirrhosis of various causes (15.7%). The patients with encephalopathy, ascites, variceal bleeding, previous splenectomy and small liver had significantly higher incidences of portal vein thrombosis than the others. The total incidence of portal vein thrombosis among the 36 patients with previous portosystemic shunt was 38.9%, which was significantly higher than that (13.8%) of those without shunt.

Nonami, Toshiaki; Yokoyama, Itsuo; Iwatsuki, Shunzaburo; Starzl, Thomas E.

2010-01-01

331

Strategic Mobility 21. Collaborative Regional Web Portal Design, Development and Documentation.  

National Technical Information Service (NTIS)

This report documents the research and initial development of a Web Portal by the strategic Mobility 21 (SM21) program, including defining requirements for an SM21 Web Portal and reviewing current literature and technology associated with Web Portals supp...

L. G. Mallon S. Carson

2007-01-01

332

Does portal pressure influence direction of portal flow and encephalopathy rates after 10-mm portacaval shunts in man?  

PubMed

Direction of portal flow after small diameter portacaval H graft has been found to significantly correlate with postshunt portasystemic encephalopathy rates. While some patients maintaining prograde portal flow were found to have a lower incidence of portasystemic encephalopathy, it has been suggested that high portal pressures are responsible for minimizing this complication. If both statements are true, then postshunt pressures should be higher in patients with prograde flow and in encephalopathy. Portal pressure and portal flow patterns were determined by shunt cannulation and fluoroscopy in 16 patients fully recovered from operation. Patients were screened for portasystemic encephalopathy over a 6- to 24-month period (average 12 months) at which time shunt patency was documented. Portal pressures were similar in patients with and without portasystemic encephalopathy and in patients with and without prograde flow. These results do not support the concept that protal pressure is an important determinant of portasystemic encephalopathy rates or flow patterns after 10-mm portacaval H graft. PMID:6748631

Rypins, E B; Sarfeh, I J

1984-08-01

333

Education.  

National Technical Information Service (NTIS)

The performance of the education industry is vital to the national security and economic prosperity of the United States. The advent of the Information Age has significantly increased both the opportunities and the challenges presented to policymakers and...

D. Buller E. Crawford J. Abney J. Barr J. Ewing

2001-01-01

334

Educate  

NSDL National Science Digital Library

Many budding academics are seeking to get a first publication over the proverbial transom, and a number of journals actively recruit their work and findings. One such journal is Educate, which is published twice a year by the Institute of Education at the University of London. The journal was first published in 2001, and has recently been made available online here. Interested parties can browse by issue, author, or title. The range of material published within the journal’s pages includes pieces on the creation of educational policy creation in the United Kingdom to funding higher education in Rwanda. Finally, visitors can also read about how to submit their own work to the journal for consideration.

335

ACTRIS Data Centre: An atmospheric data portal  

NASA Astrophysics Data System (ADS)

ACTRIS (Aerosols, Clouds, and Trace gases Research InfraStructure Network) is a European Project aiming at integrating European ground-based stations equipped with advanced instrumentation for studying aerosols, clouds, and short-lived gas-phase species. The ACTRIS activities result in improved atmospheric measurements data made at more than 60 European sites, from numerous instruments and includes variables measured by ground based in situ and remote sensing technologies. Core variables are in situ aerosol optical, physical and chemical properties, short-lived trace gases (volatile organic carbon and nitrogen oxides), aerosol scattering and extinction profiles, and cloud properties. The ACTRIS data centre (ACTRIS DC) is giving free and open access to all data resulting from the activities of the infrastructure network, complemented with data from other relevant networks and data bases. The overall goal is to facilitate scientists and other user groups access to atmospheric observational data, and to provide mature products for analysis and interpretation of atmospheric composition change. The ACTRIS DC aims at substantially increasing the number of high-quality data by providing long-term observational data relevant to climate and air quality research produced with standardized or comparable procedures throughout the network. The backbone of the ACTRIS DC is the three core data bases: - EARLINET Data Base hosting aerosol lidar data from more than 30 European sites - EBAS hosting ground based atmospheric in situ data from more than 1000 sites globally - Cloudnet hosting remote sensing cloud data and products from 5 European sites Furthermore, a joint portal is developed combining information from various data sources to gain new information not presently available from standalone databases or networks. The data centre will provide tools and services to facilitate the use of measurements for broad user communities. Higher level and integrated products will be developed stage-by-stage during the project, and user requirements, interactions and feedbacks are essential. The first version of ACTRIS DC is a web portal that allows users to search for atmospheric composition data from a multitude of data archives through a single user interface. Examples of data bases and frameworks included are EMEP, the GAW- world data centres, EARLINET, NDACC, CARIBIC-GEOmon, HTAP, AMAP amongst others. Currently the portal provides an overview of more than 800 000 data sets from more than 20 data bases/frameworks globally. For some of the databases included in the portal, the interface furthermore allows you to download data directly through the portal. A map functionality is implemented facilitating the identification of data and making it possible to search for collocation of observations, variables and sites both in time and space. The data portal can serve as "one-stop-shop" of atmospheric high-quality data, and the portal will also offer a direct interface towards external users like the MACC II project and GMES in-situ. The data dissemination will take into account the principles outlined in SEIS, INSPIRE, WIS and GEOSS.

Myhre, C. Lund; Fahre Vik, A.; Logna, R.; Torseth, K.; Linné, H.; O'Connor, E.

2012-04-01

336

Internet portal use in an academic multiple sclerosis center  

PubMed Central

Objective To evaluate the use of a secure internet portal in an academic Multiple Sclerosis (MS) Center. Materials and methods Retrospective case–control chart review of 240 patients during the years 2008 and 2009. Patient demographic and clinical information was extracted from our online medical records, and portal use metrics were provided by Information Systems. Descriptive statistics were utilized to explore characteristics of portal users, how the portal is used, and what associations exist between medical resource utilization and active portal use. Logistic regression identified independent patient predictors and barriers to portal use. Results Portal users tended to be young professionals with minimal physical disability. The most frequently used portal feature was secure patient–physician messaging. Message content largely consisted of requests for medications or refills in addition to self-reported side effects. Independent predictors and barriers of portal use include the number of medications prescribed by our staff (OR 1.69, p<0.0001), Caucasian ethnicity (OR 5.04, p=0.007), arm and hand disability (OR 0.23, p=0.01), and impaired vision (OR 0.31, p=0.01). Discussion MS patients use the internet in a greater proportion than the general US population, yet physical disability limits their access. Technological adaptations such as voice-activated commands and easy font-size adjustment may help patients overcome these barriers. Conclusion Future research should explore the influence of portal technology on healthcare resource utilization and cost. Additional emedicine applications could be linked to the patient portal for disease monitoring and prospective investigation.

Halamka, John D; Kinkel, R Philip

2011-01-01

337

Dynamic studies on portal haemodynamics by scintiphotosplenoportography: flow patterns of portal circulation  

Microsoft Academic Search

Scintiphotosplenoportography (SSP) was performed in 190 instances in 161 patients. No significant complications, such as severe pain or splenic haemorrhage, were encountered in any of the patients studied. Flow patterns of SSP were classified into nine groups according to the direction of collateral flow. Hepatopetal collateral flow was frequently observed in pancreatic cancer. In portal hypertension, cephalic collateral flow was

T Kashiwagi; K Kimura; T Suematsu; M Shichiri; T Kamada; H Abe

1980-01-01

338

Education  

NASA Astrophysics Data System (ADS)

Government schools in Congo kinshasa are not providing quality education to the masses since many years, and this phenomenon has not escaped the eyes of experts, activists, and policy makers. However, there seems to be a general perception that the main, and sometimes even the sole, source of this problem are the low levels of government expenditure of education. And to prove their case supports of this view cite educational expenditure to GDP ratios in Congo kinshasa in comparison with that of some other nations. Though there may be reasonable arguments to increase the level of government expenditure on education, such hijacking of public debate to focus on - the level of expenditure - often overlooks more important issues. Contrary to common perception the level of per student expenditure on government schools in Delhi is reasonable, ranging from Fc.6000 to Fc.12000 p.a. There are a number of organisational deficiencies which do not create checks and balances for appropriate utilization of fund. Moreover, the division of these funds among social groups and for different purposes is also questionable. Though, female literacy lags significantly behind male literacy, about 15% points, extra resources provided for female education are insignificant. And in some schemes such as the one run for 'street children' and 'child labourers', large amounts are budgeted year after year without a single French congolese being spent. Also government schools catering to richer regions of Kinshasa seem to be spending more per child as compared to the poorer counterparts. The paper also proposes an education voucher model, which may have the potential to address some of the issues raised in the paper. Trends in expenditure under some schemes have been studied in relation to the purpose of expenditure. The issue of government expenditure on education is a complex one, and public space should be utilized to discuss them as they are, rather than reducing discussion to dogmatic wars aimed at increasing the levels of expenditure. Though, one may agree or disagree with the methods and findings of the author, hopefully the paper highlight the complexity of the issue at hand, and the need to understand the institutional deficiencies and allocative inefficiencies in government expenditure on education.

Lundja, J. O.; Decrosta, J. T.; Lechuga, P.

2009-05-01

339

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

340

Open source portal to distributed image repositories  

NASA Astrophysics Data System (ADS)

In large institution PACS, patient data may often reside in multiple separate systems. While most systems tend to be DICOM compliant, none of them offer the flexibility of seamless integration of multiple DICOM sources through a single access point. We developed a generic portal system with a web-based interactive front-end as well as an application programming interface (API) that allows both web users and client applications to query and retrieve image data from multiple DICOM sources. A set of software tools was developed to allow accessing several DICOM archives through a single point of access. An interactive web-based front-end allows user to search image data seamlessly from the different archives and display the results or route the image data to another DICOM compliant destination. An XML-based API allows other software programs to easily benefit from this portal to query and retrieve image data as well. Various techniques are employed to minimize the performance overhead inherent in the DICOM. The system is integrated with a hospital-wide HIPAA-compliant authentication and auditing service that provides centralized management of access to patient medical records. The system is provided under open source free licensing and developed using open-source components (Apache Tomcat for web server, MySQL for database, OJB for object/relational data mapping etc.). The portal paradigm offers a convenient and effective solution for accessing multiple image data sources in a given healthcare enterprise and can easily be extended to multi-institution through appropriate security and encryption mechanisms.

Tao, Wenchao; Ratib, Osman M.; Kho, Hwa; Hsu, Yung-Chao; Wang, Cun; Lee, Cason; McCoy, J. M.

2004-04-01

341

Diavideos: a diabetes health video portal.  

PubMed

Diavideos Diavideos web http://ehealth.norut.no/diavideos is a web platform that collects trustworthy diabetes health videos from YouTube and offers them in a easy way. YouTube is a big repository of health videos, but good content is sometimes mixed with misleading and harmful videos such as promoting anorexia [1]. Diavideos is a web portal that provides easy access to a repository of trustworthy diabetes videos. This poster describes Diavideos and explains the crawling method used to retrieve these videos from trusted channels. PMID:23920715

Sánchez-Bocanegra, C L; Rivero-Rodriguez, A; Fernández-Luque, L; Sevillano, J L

2013-01-01

342

EarthTrends: The Environmental Information Portal  

NSDL National Science Digital Library

Provided by the World Resources Institute (WRI) with assistance from several sponsors, EarthTrends is an environmental information portal, offering searchable databases, data tables, country profiles, maps, and feature articles in ten topical sections. These include Coastal and Marine Ecosystems, Climate and Atmosphere, Agriculture and Food, and Forests and Grasslands, among others. The databases may be searched by country, region, variable, and year. Data tables and country profiles are provided in .pdf format. This slick-looking and fast-loading site is an excellent source of authoritative environmental information for teachers, students, and interested users.

343

Palliative Portal Vein Stent Placement in Malignant and Symptomatic Extrinsic Portal Vein Stenosis or Occlusion  

SciTech Connect

This article evaluates the results of portal vein (PV) stent placement in patients with malignant extrinsic lesions stenosing or obstructing the PV and causing symptomatic PV hypertension (PVHT). Fourteen patients with bile duct cancer (n = 7), pancreatic adenocarcinoma (n = 4), or another cancer (n = 3) underwent percutaneous transhepatic portal venous stent placement because of gastroesophageal or jejunal varices (n = 9), ascites (n = 7), and/or thrombocytopenia (n = 2). Concurrent tumoral obstruction of the main bile duct was treated via the transhepatic route in the same session in four patients. Changes in portal venous pressure, complications, stent patency, and survival were evaluated. Mean {+-} standard deviation (SD) gradient of portal venous pressure decreased significantly immediately after stent placement from 11.2 mmHg {+-} 4.6 to 1.1 mmHg {+-} 1.0 (P < 0.00001). Three patients had minor complications, and one developed a liver abscess. During a mean {+-} SD follow-up of 134.4 {+-} 123.3 days, portal stents remained patent in 11 patients (78.6%); stent occlusion occurred in 3 patients, 2 of whom had undergone previous major hepatectomy. After stent placement, PVHT symptoms were relieved in four (57.1%) of seven patients who died (mean survival, 97 {+-} 71.2 days), and relieved in six (85.7%) of seven patients still alive at the end of follow-up (mean follow-up, 171.7 {+-} 153.5 days). Stent placement in the PV is feasible and relatively safe. It helped to relieve PVHT symptoms in a single session.

Novellas, Sebastien [Hopital Archet, Department of Radiology and Interventional Radiology (France); Denys, Alban, E-mail: Alban.Denys@chuv.ch; Bize, Pierre, E-mail: pierrebize@bluewin.c [Centre Hospitalier Universitaire Vaudois, Department of Radiology and Interventional Radiology (Switzerland); Brunner, Philippe; Motamedi, Jean Paul [Hopital Archet, Department of Radiology and Interventional Radiology (France); Gugenheim, Jean [Hopital Archet, Department of Surgery (France); Caroli, Francois-Xavier [Hopital Archet, Department of Medical Oncology (France); Chevallier, Patrick [Hopital Archet, Department of Radiology and Interventional Radiology (France)

2009-05-15

344

Superior Mesenteric and Portal Vein Thrombosis following Laparoscopic Nissen Fundoplication  

Microsoft Academic Search

This case report describes superior mesenteric and portal vein thrombosis after laparoscopic Nissen fundoplication. As a thromboembolic prophylaxis, 2,500 IU of dalteparin was given preoperatively. After postoperative day 19, the patient experienced gradually increasing abdominal pain, mostly related to meals. Physical examination and laboratory tests were normal. CT scan revealed a portal and superior mesenteric vein thrombosis. Dalteparin and warfarin

Esko Kemppainen; Arto Kokkola; Jukka Sirén; Tuula Kiviluoto

2000-01-01

345

167. Craggy Pinnacle Tunnel. View of the east portal and ...  

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

167. Craggy Pinnacle Tunnel. View of the east portal and the stone road drain. The finished portal actually extend beyond the end of the tunnel. Facing west-southwest. - Blue Ridge Parkway, Between Shenandoah National Park & Great Smoky Mountains, Asheville, Buncombe County, NC

346

Pregnancy and Delivery in Patients with Portal Vein Cavernoma  

Microsoft Academic Search

Background: Portal vein cavernoma (PVC) is a rare disease resulting from extrahepatic portal vein thrombosis and development of collateral venous circulation. The management of pregnancy and delivery in woman with PVC has rarely been described. Cases: Two primiparous women are presented to illustrate the management of PVC during pregnancy and discuss the delivery route according to the symptoms and the

Guillaume Ducarme; Aurelie Plessier; Claire Thuillier; Pierre François Ceccaldi; Dominique Valla; Dominique Luton

2009-01-01

347

Connections: A Comprehensive Student Portal. Concept Paper and Proposal.  

ERIC Educational Resources Information Center

A student Web portal is a personalized, student-centric view of College Web resources. The "Artemis" system at Florida Community College at Jacksonville (FCCJ), represents movement toward realization of the efficiencies and student service possibilities of a Web portal. This proposal recommends a radical expansion of Artemis functions, one that…

Harr, Gary Lynn

348

Metadata for Web Portals: Developing an e-Markets' Directory  

Microsoft Academic Search

Metadata (that is, data about data), may greatly facilitate content collection, description, categorisation, location, and retrieval in the context of Web portals. It can be used to support the development of Web portal services that are based on the collection of content objects (resources). In this article, we present how metadata can be used to support the development of a

Nikos Manouselis; Constantina Costopoulou; Alexander B. Sideridis

349

1. West portal of Tunnel 38, contextual view to east, ...  

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

1. West portal of Tunnel 38, contextual view to east, 135mm lens. West portal of Tunnel 3 (HAER CA-212) on original Central Pacific Transcontinental line visible in distance at left. - Central Pacific Transcontinental Railroad, Tunnel No. 38, Milepost 180.58, Cisco, Placer County, CA

350

An Analysis of Knowledge Management Mechanisms in Healthcare Portals  

ERIC Educational Resources Information Center

|Healthcare portals are becoming increasingly popular with Internet users since they play an important role in supporting interaction between individuals and healthcare organizations with a Web presence. Additionally, many of these organizations make use of knowledge management mechanisms on their healthcare portals to manage the abundance of…

Lee, Chei Sian; Goh, Dion Hoe-Lian; Chua, Alton Y. K.

2010-01-01

351

8. East portal of 1898 swing span of Bridge Number ...  

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

8. East portal of 1898 swing span of Bridge Number 210.52, view to east, 210mm lens. Note the difference in the latticed portal strut as compared to that of the 1929 approach span in the previous photo. - Southern Pacific Railroad Shasta Route, Bridge No. 210.52, Milepost 210.52, Tehama, Tehama County, CA

352

2. West portal of Tunnel 18, oblique view to northnortheast, ...  

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

2. West portal of Tunnel 18, oblique view to north-northeast, 135mm lens. Note the use of concrete face and wingwalls, with dressed stone voussoirs, wingwall coping, parapet with stone belt course and coping, and coursed stone masonry slope protection flanking the portal. - Southern Pacific Railroad Natron Cutoff, Tunnel No. 18, Milepost 410, Dorris, Siskiyou County, CA

353

The Hypophysial Portal Vessels of the Porpoise (Phocæna phocæna)  

Microsoft Academic Search

IF the nervous system influences the activity of the anterior lobe of the pituitary gland by liberating some humoral excitant into the hypophysial portal vessels, which in turn transmit the substance to the gland1,2, then it would seem likely that these portal vessels would be widely distributed among the vertebrates. It is well known that in birds and some mammals

G. W. Harris

1947-01-01

354

Knowledge access, creation and transfer in e-government portals  

Microsoft Academic Search

Purpose - Knowledge management (KM) is an important consideration in e-government portals to ensure that knowledge flows efficiently between governments, individuals and organisations. A crucial aspect of e-government portals that has not been addressed adequately is the extent to which KM mechanisms have been implemented. Specifically, the authors argue that appropriate KM mechanisms are necessary to support the access, creation

Dion Hoe-lian Goh; Alton Yeow-kuan Chua; Brendan Luyt; Chei Sian Lee

2008-01-01

355

Business Culture and the Death of a Portal  

Microsoft Academic Search

After receiving a Government grant under an 'e-commerce early movers' scheme, the Western Region Economic Development Organisation in Melbourne conceived and developed a business-to-business portal for use by small to medium enterprises (SME) in the region. This innovative project was to create a horizontal portal - Bizewest, which would enable the whole range of SMEs in Melbourne's west to engage

Arthur Tatnall

2007-01-01

356

Integration of Job Portals by Meta-search  

Microsoft Academic Search

In the area of Human Resource Management, the trend is towards online exchange of information about human resources. For example, online applications for employment become standard and job offerings are posted in many job portals. However, there are too many job portals to monitor all of them if someone is interested in a new job. We developed a prototype for

J. Dorn; T. Naz

2007-01-01

357

Effect of Teprenone on Portal Hypertensive Gastric Mucosa  

Microsoft Academic Search

Teprenone (geranylgeranylacetone) is a gastric mucosal protective drug used clinically in Japan for treatment of gastric ulcers and gastritis. Its effect on portal hypertensive (PHT) gastric mucosa which has impaired defensive mechanisms is not known. In 20 PHT and 20 sham-operated rats, we studied the effects of teprenone or placebo on: (1) portal pressure; (2) gastric pH; (3) gastric mucosal

Kazuo Tanoue; Andrzej S. Tarnawski; Fumiaki Kishihara; Masayuki Ohta; Makoto Hashizume; Keizo Sugimachi; James Sarfeh

1996-01-01

358

REportal: A Web-Based Portal Site for Reverse Engineering  

Microsoft Academic Search

We present a web-based portal site for reverse engineer- ing software systems called REportal. REportal enables au- thorized users to upload their code to a secure web site and then, through the guide of wizards, browse and analyze their code. Currently the portal services include code analysis, browsing, querying, and design extraction for C, C++, and Java programs. The REportal

Spiros Mancoridis; Timothy S. Souder; Yih-farn Chen; Emden R. Gansner; Jeffrey L. Korn

2001-01-01

359

Development of a trace explosives detection portal for personnel screening  

Microsoft Academic Search

We discuss the development, design and operation of a walk-through trace detection portal designed to screen personnel for explosives. Developed at Sandia National Laboratories (SNL) with primary funding from the Federal Aviation Administration (FAA) and additional support from the Department of Energy Office of Safeguards and Security, this portal is intended primarily for use in airport terminals and in other

J. E. Parmeter; K. L. Linker; F. A. Bouchier; D. W. Hannum

1998-01-01

360

11. VIEW, WEST PORTAL, FROM SOUTHEAST, SHOWING UPPER CHORDS, VERTICALS, ...  

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

11. VIEW, WEST PORTAL, FROM SOUTHEAST, SHOWING UPPER CHORDS, VERTICALS, WEST PORTAL INCLINED ENDPOSTS AND STRUT, LATERAL STRUT AND BRACING, TIMBER DECK, AND RAILING - Virginia Department of Transportation Bridge No. 6051, Spanning Catoctin Creek at State Route 673 (Featherbottom Road), Waterford, Loudoun County, VA

361

12. VIEW, NORTHWEST PORTAL, FROM SOUTHEAST, SHOWING TOP CHORD, VERTICALS, ...  

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

12. VIEW, NORTHWEST PORTAL, FROM SOUTHEAST, SHOWING TOP CHORD, VERTICALS, NORTHWEST PORTAL STRUT, UPPER CHORD, LATERAL STRUT AND BRACING, TIMBER RAILING, AND TIMBER DECK - Virginia Department of Transportation Bridge No. 6023, Spanning Norfolk Southern tracks at State Route 646, Nokesville, Prince William County, VA

362

From online catalogs to library portals: empowering users  

Microsoft Academic Search

Purpose – The paper aims to highlight both major and minor features of the library portal, which empowers users to get access to a wide variety of e-resources with a single sign-on. Design\\/methodology\\/approach – The study is mainly based on a review of the literature. It briefly discusses the transition from the library OPAC to the library portal. Findings –

Zahiruddin Khurshid; Syed Sajjad Ahmed

2007-01-01

363

Coupled Deterministic-Monte Carlo Transport for Radiation Portal Modeling  

Microsoft Academic Search

Radiation portal monitors are being deployed, both domestically and internationally, to detect illicit movement of radiological materials concealed in cargo. Evaluation of the current and next generations of these radiation portal monitor (RPM) technologies is an ongoing process. 'Injection studies' that superimpose, computationally, the signature from threat materials onto empirical vehicle profiles collected at ports of entry, are often a

Leon E. Smith; Erin A. Miller; Richard S. Wittman; Mark W. Shaver

2008-01-01

364

Continued Use of a Chinese Online Portal: An Empirical Study  

ERIC Educational Resources Information Center

|The evolution of the internet has made online portals a popular means of surfing the internet. In internet commerce, understanding the post-adoption behaviour of users of online portals can help enterprises to attract new users and retain existing customers. For predicting continued use intentions, this empirical study focused on applying and…

Shih, Hung-Pin

2008-01-01

365

Base of tongue varices associated with portal hypertension.  

PubMed

A symptomatic case of tongue base varices in a patient with portal hypertension secondary to liver cirrhosis is presented. There are no previously documented cases in the world literature. Oesophageal varices may not be the only source of expectorated blood in a patient with portal hypertension. PMID:10964125

Jassar, P; Jaramillo, M; Nunez, D A

2000-09-01

366

[Hemoptysis from dorsal tongue base varices secondary to portal hypertension].  

PubMed

Portal hypertension secondary to cirrhosis of the liver is the main factor leading to the formation of portosystemic collaterals. The sites of such collateral circulation are well known. We describe a case of haemoptysis from dorsal tongue base varices, which are not recognised as portosystemic anastomosis, in a cirrhotic patient with portal hypertension. PMID:11822098

Castiglione, U; Curcio, M; Salvaggio, S; Vancheri, F

2001-12-01

367

Online shopping portals: an option for traditional retailers?  

Microsoft Academic Search

Purpose – The purpose of the paper is to examine the benefits delivered to traditional retailers from using shopping portals as their entry mechanism to the online trading environment. The paper also aims to highlight the possible drawbacks inherent in such an approach. Design\\/methodology\\/approach – A case study approach was used with an online portal, combining documentary analysis and semi-structured

Aileen Kennedy; Joseph Coughlan

2006-01-01

368

Building a Grid Portal for Teragrid's Big Red  

Microsoft Academic Search

Abstract — We describe the Big Red Portal, which builds on the Open Grid Computing Environment (OGCE) portal software. In addition to standard OGCE capabilities, this portalincludes MEME job submission and job dashboard portlets that are built using OGCE and related portlet libraries. To simplify the development of such portlets in the future, we introduce an XML tag library approach,that

Mehmet A. Nacar; Jong Y. Choi; Marlon E. Pierce; Geoffrey C. Fox

2007-01-01

369

Deformable Multi Template Matching with Application to Portal Images  

Microsoft Academic Search

The exact positioning of patients during radiotherapy is essential for high precision treatment. The registration of portal image sequences (megavoltage X-ray images) can help to control the patient position. The particular problem of portal imaging devices is that the y provide imagery with extremely low contrast. Therefore, feature extraction followed by binary feature mat ching is a difficult task. To

Martin Berger; Gaudenz Danuser

1997-01-01

370

Influence of Extraterrestrial Radiation on Radiation Portal Monitors  

Microsoft Academic Search

Cosmic radiation and solar flares can be a major source of background radiation at the Earth's surface. This paper examines the relationship between extraterrestrial radiation and the detectable background in radiation portal monitors used for homeland security applications. Background radiation data from 13 radiation portal monitor facilities are examined and compared against external sources of data related to extraterrestrial radiation,

Paul E. Keller; Richard T. Kouzes

2009-01-01

371

Batch Mode Data Analysis at ORNL for Radiation Portal Monitoring  

Microsoft Academic Search

The Global Nuclear Security Technology Division at Oak Ridge National Laboratory (ORNL) has developed two batch-mode data analysis tools to address the volume of data generated by radiation portal monitors (RPMs) deployed by the Second Line of Defense (SLD). The first of these tools, the ORNL Data Portal (ORNLDP), serves as both a repository and an analysis environment for the

Jake Livesay; Christopher S Blessinger; Jason Michael Crye; Scott Alcala; Tommy W Adkins

2009-01-01

372

Portal monitors for personnel contamination control; A performance testing  

Microsoft Academic Search

This paper reports that the use of portal monitors with large-area detectors has generated considerable interest in the nuclear industry because of the potential time savings in monitoring large numbers of people. However, it is difficult for both manufacturers and users to evaluate the true potential of the newer, high-sensitivity portal monitors due to the lack of standardized testing criteria.

V. P. Gupta; L. O. Johnson; R. L. Stevenson; B. L. Rich

1983-01-01

373

A study of the spectral response of portal imaging detectors  

Microsoft Academic Search

There is significant current interest into the use of electronic portal imaging systems for radiotherapy dosimetry. Most work presented to date assumes idealized models for the spectral sensitivity of imaging systems: such as Compton, photopeak or photon counting. In this paper it is shown that a typical portal imaging detector, comprised of thin metal converter plate (1 mm Cu) with

Mike Partridge; Burkhard Groh; Lothar Spies; Bernd-Michael Hesse; Thomas Bortfeld

2000-01-01

374

Clinical analysis of surgical treatment of portal hypertension  

Microsoft Academic Search

Abstract Abstract Abstract Abstract AIM: To review the experience in surgery for 508 patients with portal hypertension and to explore the selection of reasonable operation under different conditions. METHODS: The data of 508 patients with portal hypertension treated surgically in 1991-2001 in our centers were analyzed. Of the 508 patients, 256 were treated with portaazygous devascularization (PAD), 167 with portasystemic

Xin-Bao Xu; Jing-Xiu Cai; Xi-Sheng Leng; Jia-Hong Dong; Ji-Ye Zhu; Zhen-Ping He; Fu-Shun Wang; Ji-Run Peng; Ben-Li Han; Ru-Yu Du

375

Making Tacit Knowledge Explicit: Designing An Export Trading Knowledge Portal  

Microsoft Academic Search

This paper investigates how tacit knowledge is made explicit in a predefined export trading knowledge domain. It also considers important aspects of portal design that support knowledge use, creation and renewal. This research looks at how a portal is designed to allow specified users to effectively use knowledge. A case study was conducted to examine the useful types of export

Lisa Soon; Donald Kerr; Campbell Fraser

2006-01-01

376

Intestinal permeability in rats with CCl4-induced portal hypertension  

Microsoft Academic Search

AIM: To investigate the intestinal barrier changes in rats with CCl4-induced portal hypertension. METHODS: The permeability of intestinal barrier detected by Lanthanum as a tracer was evaluated in rats. Bacterial translocation and plasma endotoxin were also determined. RESULTS: The incidence of bacterial translocation was 85% in rats with CCl4-induced portal hypertension, which was signifi cantly higher than that in control

Guo-Xiang Yao; Zhong-Yi Shen; Xin-Bo Xue; Zhen Yang

377

Educational \\  

Microsoft Academic Search

From the point of view of the colonizer, colonial educa- tion was provided first and foremost to stabilize and strengthen colonial rule. Studies of nationalism, however, repeatedly demonstrate that education could inadvertently undermine colonial rule by stimulating the formation of na- tionalist identities. Some analysts focus on the role that edu- cational content played in creating anticolonial nationalism, pointing out

Vickie Langohr

2001-01-01

378

The NOAO NVO Portal: Client-Side VO  

NASA Astrophysics Data System (ADS)

The NOAO National Virtual Observatory (NVO) portal is a recently deployed web application for one-stop discovery, analysis, and access to VO-compliant imaging data and services. The NOAO NVO portal utilizes Simple Image Access Protocol (SIAP) services provided by some astronomical archives. The portal also utilizes a number of SOAP-based VO web services (WESIX, Sesame, etc). We discuss the design decisions and technology choices that were made in the NOAO NVO portal code to facilitate the use of IVOA standards and VO data/services. This includes a new Virtual Observatory library written for Ruby: an interpreted scripting language for quick and easy object-oriented programming. We provide an overview of VORuby and how it is utilized in the NOAO NVO Portal.

Gasson, D.; Fuentes, E.; Miller, C. J.

2007-10-01

379

Metadot Portal Server 6.2b7  

NSDL National Science Digital Library

The Scout Report likes to keep an eye out for helpful applications, and this latest release of the Metadot Portal Server may be a nice addition for some of our readers. The program is an open source portal system that is designed for ease of use (and as such, is relatively simple to figure out) and can be used to create websites and portals in a short period of time. One obvious use of the program is to allow far-flung users to collectively collaborate on various projects through the use of their file and document management capabilities. For users looking for ideas of what can be done with Metadot Portal Server 6.2b7, they may look at the online portfolio of live implementations created with the program, including those created by NASA and the World Health Organization. This version of Metadot Portal Server is compatible with all systems running Mac OS X and Linux.

380

Contrast enhancement of portal images by selective histogram equalization.  

PubMed

Because of the high energy of the treatment beam, contrast of portal verification films is very poor. A simple contrast enhancement technique is described which we have labeled selective histogram equalization (SHE), to improve visualization of double-exposure portal images and this facilitate the beam verification process. The technique performs separate histogram equalization on the treatment- and open-field sections of double-exposure portal images. Delineation of the treatment field edge and separation into two regions is performed automatically for off-line portal radiographs by a strategic combination of Sobel filtration and morphological processes. Analyses of images processed by SHE and other adaptive histogram equalization techniques indicate that SHE produces improved contrast enhancement with minimal addition of noise or artifacts, thus simplifying the beam verification procedure. The simple implementation of an automatic SHE process with on-line portal systems is also discussed. PMID:8455500

Crooks, I; Fallone, B G

381

Evaluation of several Dupont portal film systems.  

PubMed

The sensitometric curves (also known as the characteristic curves, or more commonly as the H-D curves after Hurler and Driffield who first used such curves in 1890 to describe the response of photographic film to light) of three DuPont portal films (CRONEX 10T, 10TL and Ultra-Vision C) in combination with two DuPont cassettes (CRONEX Radiation Therapy and Radiation Therapy Verification) were produced utilizing a 60Co beam and a 18 MV beam. The results are compared with that of a Kodak portal film system (T-Mat G/RA film and X-Onratic V cassette). The sensitometric curves of the DuPont films in the Kodak cassette were also measured. The results show that the Kodak system is superior to the DuPont systems with respect to the imaging quality and the feasibility of film techniques, and that if the DuPont films are used, significant improvements can be made by combining the DuPont films with the Kodak cassette. PMID:8899683

Li, H; Xu, Z; Almond, P R

1996-01-01

382

Innovations in weapons detector portal technology  

NASA Astrophysics Data System (ADS)

Conventional concealed weapons detection portals, deployed worlwide at airports, governent buildings, courthouses, and other security critical facilities, are challenged by today's need for stringent and effective entry point screening. Modern threats, like exotic lightweight handguns, are becoming increasingly difficult to detect. Conventional portals do little, if anything, to assist security personnel in resolving the true nature of a potential threat. Systems that rely on blind operator intervention for alarm resolution invite too much human error so security is ultimately compromised. These systems do not instill confidence in the operator or the general public and thus do not present the necessary deterrent to those with sinister intent. Increased detection and improved discrimination do not adequately advance the utility of these security tools. High precision alarm object location information presented to the operator will result in the rapid resolution of the potential threat. Providing this information to the person under scrutiny via a static or streaming video image can enable self-divesting of the offending item without the need for security personnel intervention. Robust detection, effective discrimination, and precise object location information will result in superior entry point screening operations.

Perry, Alexander R.; Czipott, Peter V.; Beevor, Simon P.; Hanley, Gerard A.

2003-09-01

383

Designing a data portal for synthesis modeling  

NASA Astrophysics Data System (ADS)

Processing of field and model data in multi-disciplinary integrated science studies is a vital part of synthesis modeling. Collection and storage techniques for field data vary greatly between the participating scientific disciplines due to the nature of the data being collected, whether it be in situ, remotely sensed, or recorded by automated data logging equipment. Spreadsheets, personal databases, text files and binary files are used in the initial storage and processing of the raw data. In order to be useful to scientists, engineers and modelers the data need to be stored in a format that is easily identifiable, accessible and transparent to a variety of computing environments. The Model Operations and Synthesis (MOAS) database and associated web portal were created to provide such capabilities. The industry standard relational database is comprised of spatial and temporal data tables, shape files and supporting metadata accessible over the network, through a menu driven web-based portal or spatially accessible through ArcSDE connections from the user's local GIS desktop software. A separate server provides public access to spatial data and model output in the form of attributed shape files through an ArcIMS web-based graphical user interface.

Holmes, M. A.

2006-12-01

384

A Science and Technology Education Portal for Ibero-America  

Microsoft Academic Search

The world has become dependent on information, technology, and telecommunications, better known as Information Technology (IT). Increasingly, IT is an effective indicator to measure the difference between developed and developing nations. The competitiveness and economic growth of a nation are directly related to the incorporation of clear policies on IT. It requires a substantial restructuring of the initiatives and progr

Ramiro Jordan; Soraya Abad-Mota; Matias Marin Pizarro

385

Under-meniscal portal: an alternative portal for an easy access to the medial and lateral menisci.  

PubMed

Approach to the pathologies in the posterior horn of the medial meniscus in a tight knee may be a challenging technique to the arthroscopic surgeon in certain patients. The pie-crusting technique of the medial collateral ligament which can be done percutaneously to open up a tight posteromedial compartment would be a good option in such patients. Here, the authors introduce a useful alternative portal for approaching the posterior horn of the medial meniscus, the under-meniscal portal. The under-meniscal portal is located under the menisci and can be placed safely and easily without any complication. It is also helpful for approaching the unstable underside of the horizontal tear in the anterior horn of the lateral meniscus. The authors suggest the under-meniscal portal as a good alternative portal for managing challenging lesions in the posterior horn of the medial meniscus and the anterior horn of the lateral meniscus. PMID:19590855

Jo, Chris Hyunchul; Yoon, Kang Sup; Lee, Ji Ho; Kang, Seung Baik; Lee, Jae Hyup; Han, Hyuk Soo; Rhee, Seung Hwan; Lee, Myung Chul

2009-07-10

386

Earth System Science Informal Education Network (ESSIEN) - Other Resources  

NSDL National Science Digital Library

The Earth System Science Informal Education Network (ESSIEN) is dedicated to improving Earth system literacy through increased communication and collaboration among providers of informal Earth system education. The collection is designed for museum professionals (educators, exhibits designers, developers) as a resource of ideas, tools, traveling exhibits and online materials. The resources are web portals to organizations providing substantial informal Earth system science education. They describe educational programming, resources and exhibits that are pertinent to an informal educator.

387

California Environmental Education Interagency Network (CEEIN)  

NSDL National Science Digital Library

CEEIN is a consortium of environmental educators representing California state departments, boards, and commissions whose responsiblity is to protect California's environment. This portal provides links to California state agencies that provide education/outreach services or post educational materials. The agencies include the California Department of Education, California Environmental Protection Agency, Water Resources Control Board, Coastal Commission, Department of Fish and Game, and many others.

2004-12-10

388

Extending electronic portals with new services: exploring the usefulness of brand extension models  

Microsoft Academic Search

The Internet revolution recently entered the portal phase, putting the composition of service offers on web portals in the limelight. Firms attempt to increase website traffic by extending their portals with new service categories, while the portal brand acts as a risk reliever for customers interested in trying the new services. This study investigates newly introduced service categories on a

Allard C. R. van Riel; Hans Ouwersloot

2005-01-01

389

[Imaging of collaterals and their impact on portal venous flow in patients with liver cirrhosis].  

PubMed

When the portal hypertension syndrome occurs, patients with liver cirrhosis develop three major collateral blood flow pathways. These are gastroesophageal, splenorenal, and paraumbilical ones along the recanalized umbilical veins. Only both the splenorenal pathway of blood return from the portal venous system, which considerably reduces portal blood flow volume and the paraumbilical one that increases portal blood flow are of hemodynamic significance. PMID:22187898

Prozorovski?, K V; Pruchanski?, V S

390

Glutamine synthetase activity and glutamate uptake in hippocampus and frontal cortex in portal hypertensive rats  

Microsoft Academic Search

AIM: To study glutamine synthetase (GS) activity and glutamate uptake in the hippocampus and frontal cortex (FC) from rats with prehepatic portal vein hypertension. METHODS: Male Wistar rats were divided into sham- operated group and a portal hypertension (PH) group with a regulated stricture of the portal vein. Animals were sacrificed by decapitation 14 d after portal vein stricture. GS

Gabriela Beatriz Acosta; María Alejandra Fernández; Diego Martín Roselló; María Luján Tomaro; Karina Balestrasse; Abraham Lemberg

2009-01-01

391

Facilitating the Semantic Discovery of eGovernment Services: The SemanticGov Portal  

Microsoft Academic Search

In this paper we propose a way to facilitate the issue of discovering the eGovernment services that address a citizen's need. This approach is implemented in an application, which we call a semantic portal. The semantic portal is part of our SemanticGov project architecture. The portal's components and its architecture are presented and explained. The portal's conceptual modeling is based

Nikolaos Loutas; Vassilios Peristeras; Sotirios K. Goudos; Konstantinos Tarabanis

2007-01-01

392

Ramification of the portal vein at the porta hepatis in humans  

Microsoft Academic Search

Summary The ramification of the portal vein at the porta hepatis was studied by anatomic dissection performed in 32 formalin fixed human livers. In all the specimens there were branches which ran towards the caudate lobe, arising from the portal vein and either from the left or the right portal branches. Tri-and quadrifurcation of the portal vein was observed. In

LJ Franceschini; JR Ortale

1995-01-01

393

Microvascular abnormalities of the portal hypertensive gastric mucosa.  

PubMed

Compared with normotensive mucosa, the portal hypertensive gastric mucosa has increased susceptibility to injury by noxious agents such as alcohol and aspirin, but the mechanism of this phenomenon is unclear. Since the microvasculature of the normal gastric mucosa is an important target of injury by these agents, we studied the histologic and ultrastructural features of gastric vasculature and mucosal microvasculature in rats with portal hypertension (produced by staged portal vein ligation) and in sham-operated rats. In portal hypertensive rats, the gastric mucosa was swollen and hyperemic and the endothelial cells of mucosal microvessels had very prominent enlarged cytoplasm obstructing capillary lumina. Quantitative analysis of transmission electron micrographs demonstrated that in portal hypertensive rats the gastric mucosal capillary endothelium had significantly increased cytoplasmic area (236%), increased pinocytic vesicular area (416%) and increased capillary basement membrane thickness (143%) compared to respective parameters in sham-operated control rats. Arterioles in the muscularis mucosae and in submucosa were thickened, and submucosal veins demonstrated features of arterialization. All these findings indicate that portal hypertension produces definite microvascular changes in the gastric mucosa resulting in compromise of the capillary lumina. These changes may be the basis for the observed morphologic and functional abnormalities of the portal hypertensive mucosa and its increased predisposition to injury. PMID:3192161

Tarnawski, A S; Sarfeh, I J; Stachura, J; Hajduczek, A; Bui, H X; Dabros, W; Gergely, H

394

Increased susceptibility of the portal hypertensive gastric mucosa to damage.  

PubMed

Portal hypertensive gastropathy has recently been recognized as a unique entity distinct from other gastropathies involving the normotensive gastric mucosa. To delineate the pathophysiology of this disorder, we developed a rat model of portal hypertension using two-staged portal vein ligation. In this model, features of the portal hypertensive mucosa include increased luminal hydrogen ion loss, reduced electronegativity of potential difference, and increased submucosal edema. Ultrastructurally, the portal hypertensive gastric mucosa has marked endothelial hypertrophy of capillaries resulting in prominent compromise of microvascular lumina. Combined with the submucosal edema, the microvasculopathy results in reduced oxygenation of the surface gastric mucosa. This is associated with diminished prostaglandin production, which impairs gastric mucosal protection in portal hypertension. These observations are strengthened by experiments that demonstrated significantly increased gastric mucosal damage by alcohol, bile acids, aspirin, and shock/reperfusion in portal hypertensive rats compared to normotensive sham-operated controls. Many of our experimental findings have been confirmed clinically; however, much more research in this area is clearly needed. PMID:1940192

Sarfeh, I J; Tarnawski, A

1991-01-01

395

Endothelial dysfunction in the regulation of portal hypertension  

PubMed Central

Portal hypertension is caused by an increased intrahepatic resistance, a major consequence of cirrhosis. Endothelial dysfunction in liver sinusoidal endothelial cells (LSECs) decreases the production of vasodilators, such as nitric oxide (NO) and favors vasoconstriction. This contributes to an increased vascular resistance in the intrahepatic/sinusoidal microcirculation. Portal hypertension, once developed, causes endothelial cell (EC) dysfunction in the extrahepatic, i.e. splanchnic and systemic, circulation. Unlike LSEC dysfunction, EC dysfunction in the splanchnic and systemic circulation overproduces vasodilator molecules, leading to arterial vasodilatation. In addition, portal hypertension leads to the formation of portosystemic collateral vessels. Both arterial vasodilatation and portosystemic collateral vessel formation exacerbate portal hypertension by increasing the blood flow through the portal vein. Pathologic consequences, such as esophageal varices and ascites, result. While the sequence of pathological vascular events in cirrhosis and portal hypertension have been elucidated, the underlying cellular and molecular mechanisms causing EC dysfunctions are not yet fully understood. This review article summarizes the current cellular and molecular studies on EC dysfunctions found during the development of cirrhosis and portal hypertension with a focus on intra- and extrahepatic circulation. The article ends by discussing future directions of study for EC dysfunctions.

Iwakiri, Yasuko

2013-01-01

396

Climate Change Education .org  

NSDL National Science Digital Library

Climate Change Education .org is a volunteer organization made up primarily of docents and interns at California science centers and museums, along with students, scientists, and staff at the University of California, Berkeley. The organization specializes in hands-on science demonstrations relevant to climate change and other topics, and the encouragement of partnerships in education. The group's two portal web sites, Climate Change Education .org and Global Warming California .net, direct visitors to hundreds of links to great resources on subjects of interest.

397

Smart Cities: New York. Electronic Education for the New Millennium.  

ERIC Educational Resources Information Center

|This pedagogical framework describes how the New York City Board of Education plans to improve education using information technologies. By providing advanced Internet services connecting students and their families, as well as teachers, schools staff, and the interested public, to a high-quality educational ISP/Portal, available to anyone at any…

McClintock, Robert

398

Statistical characterization of portal images and noise from portal imaging systems.  

PubMed

In this paper, we consider the statistical characteristics of the so-called portal images, which are acquired prior to the radiotherapy treatment, as well as the noise that present the portal imaging systems, in order to analyze whether the well-known noise and image features in other image modalities, such as natural image, can be found in the portal imaging modality. The study is carried out in the spatial image domain, in the Fourier domain, and finally in the wavelet domain. The probability density of the noise in the spatial image domain, the power spectral densities of the image and noise, and the marginal, joint, and conditional statistical distributions of the wavelet coefficients are estimated. Moreover, the statistical dependencies between noise and signal are investigated. The obtained results are compared with practical and useful references, like the characteristics of the natural image and the white noise. Finally, we discuss the implication of the results obtained in several noise reduction methods that operate in the wavelet domain. PMID:22915239

González-López, Antonio; Morales-Sánchez, Juan; Verdú-Monedero, Rafael; Larrey-Ruiz, Jorge

2013-06-01

399

Superior mesenteric and portal vein thrombosis following laparoscopic nissen fundoplication.  

PubMed

This case report describes superior mesenteric and portal vein thrombosis after laparoscopic Nissen fundoplication. As a thromboembolic prophylaxis, 2,500 IU of dalteparin was given preoperatively. After postoperative day 19, the patient experienced gradually increasing abdominal pain, mostly related to meals. Physical examination and laboratory tests were normal. CT scan revealed a portal and superior mesenteric vein thrombosis. Dalteparin and warfarin treatment was started, and symptoms relieved rapidly. In a control Doppler ultrasound 1 month after the onset of the treatment, a good flow in the portal and superior mesenteric vein was seen. Possible mechanisms are discussed. PMID:10867463

Kemppainen, E; Kokkola, A; Sirén, J; Kiviluoto, T

2000-01-01

400

Thrombosis of the portal venous system following blunt abdominal trauma.  

PubMed

A 60-year-old man presented to the accident and emergency department with a 4-day history of abdominal pain following blunt abdominal trauma. An initial CT scan showed thickened walls of the proximal jejunum and thromboses in the portal, splenic and superior mesenteric veins. He was given warfarin and the abdominal pain resolved. A repeat CT scan 1 week later revealed significant resolution of the mural thickening and the portal vein thrombosis. A subsequent thrombophilia screen was negative and he continued taking oral anticoagulants for a total of 6 months. A repeat CT scan 3 months after presentation revealed complete recanalisation the portal venous system. PMID:22767370

Rajkomar, Vikram; Kyerematen, Enoch; Mysore, Prabhakar; Penston, James

2010-08-24

401

Splenic Artery Embolization as an Adjunctive Procedure for Portal Hypertension  

PubMed Central

Splenic embolization is a technique that can be used alone or in conjunction with other treatments for the mitigation of portal hypertension and associated physiological effects of portal hypertension. This technique can be used safely when total embolization volume is ~50% and the procedural and periprocedural time periods are covered with antibiotics. In this patient population, partial splenic embolization can decrease the incidence of variceal bleeding, and protection can persist for at least a year. Additionally, liver function tests and serum cell counts can be expected to improve. Although not frequently used as primary therapy for patients with portal hypertension, splenic embolization can often be helpful as an alternative or adjunctive procedure.

Smith, Mitchell; Ray, Charles E.

2012-01-01

402

Posttransplant bilioportal fistula with portal vein thrombosis: a case report.  

PubMed

An 8-year-old female patient, known to have post-Kasai biliary atresia with mild intrapulmonary shunting, underwent living donor liver transplantation because of recurrent cholangitis. After the treatment of postoperative biliary stricture with percutaneous transhepatic biliary drainage, the patient subsequently developed hematochezia with portal vein thrombosis. The intraoperative findings showed portal vein thrombosis with a bilioportal fistula. We performed closure of the bilioportal fistula and reconstruction of the portal vein with a native internal jugular vein interposition graft. A bilioportal fistula due to percutaneous hepatobiliary procedures is a reportedly a rare complication following liver transplantation. The patient is currently doing well after a successful surgical intervention. PMID:21094871

Kasahara, M; Sakamoto, S; Fukuda, A; Shigeta, T; Tanaka, H; Mastuno, N; Hashimoto, M; Kondo, Y; Nosaka, S; Nakazawa, A

2010-11-01

403

The romanesque marble portals of Schloss Tirol/Italy  

NASA Astrophysics Data System (ADS)

Marble artifacts are confronted with two kinds of problems: i) weathering, which is a task for material conservation research, ii) unclear provenance which creates problems with respect to historical interpretations. An art historically very prominent example are the two romanesque marble portals of Schloß Tyrol/ South Tyrol/Italy, the Palas portal at the entrance sheltered by a canopy and the Chapel portal leading directly from the palas hall into the chapel. Stilistic criteria and historical sources date them into the 12th century (1). The performed study concerned a detailed macroscopic mapping and ultrasonic work (2) as well as petrographical and chemical investigations on some very small drill core samples. The map-ping and ultrasonic work revealed that the Palas portal is significantly more weathered and damaged than the chapel portal. At first glance this finding seems consistent with the location of the objects. However, even if a reported period of some 120 years of unsheltered free exposure of the Palas portal after its construction is taken into account, the weathering impacts are too severe (5). A fire catastrophy documented around 1300 might be considered the relevant damage event. This again sheds some light on the specific history of the well preserved Chapel portal: stylistically both portals are contemporaneous, so one may assume that it had been taken from another locality and was built in later. A potential candidate for this is a karolingian church (7-8th century) outside the castle-complex of which the relics have been excavated recently. This picture is substantiated by the results of the material investigations (grain size, chemistry and C, O isotopes (3)) suggesting different provenance of the marbles of the two portals. Comparative studies on the regional marbles speak in favour for Laas Marble for the Palas portal and Sterzing Marble for the Chapel portal (4). The study is continued with a detailed investigation on the supposed fire damages on the palas portal (1) G. Seebach (1995): Katalog Tiroler Landesausstellung 79-83. (2) W. Köhler (1998): Proc. 9thEurocare-Euromarble Workshop Munich, Oct .8.-10. (3) H. Craig, V. Craig (1972): Science 176, pp.401-403 (4) R. Fimmel (1996): Dissertation Univ. Innsbruck, 119 p. (5) St. Simon, R. Snethlage (1996): Proc. 6th Eurocare-Euromarble Workshop Suzdal, Sept. 9.-13.

Recheis, A.; Bidner, Th.; Hauser, W.; Mirwald, P. W.

2003-04-01

404

Thrombosis of the portal venous system following blunt abdominal trauma  

PubMed Central

A 60-year-old man presented to the accident and emergency department with a 4-day history of abdominal pain following blunt abdominal trauma. An initial CT scan showed thickened walls of the proximal jejunum and thromboses in the portal, splenic and superior mesenteric veins. He was given warfarin and the abdominal pain resolved. A repeat CT scan 1 week later revealed significant resolution of the mural thickening and the portal vein thrombosis. A subsequent thrombophilia screen was negative and he continued taking oral anticoagulants for a total of 6 months. A repeat CT scan 3 months after presentation revealed complete recanalisation the portal venous system.

Rajkomar, Vikram; Kyerematen, Enoch; Mysore, Prabhakar; Penston, James

2010-01-01

405

Middle School Portal: Measurement Sliced and Diced  

NSDL National Science Digital Library

This standards-based module for the middle grades offers an array of online lessons, simulations, and activities to use in constructing a full unit on measurement. It was developed to help teachers provide scaffolding in areas where students often struggle with abstract ideas. It gives links that provide hands-on experiences with measuring, using scale and proportionality, and estimating. Each concept is supported with activities that use real-life applications where students make choices of which tools and units to use in problem solving. Editor's Note: Of the 25+ links in this module, we discovered that 6 did not work. As a whole, this item meets all other criteria as an exemplary resource for middle school learners. This resource is part of the Middle School Portal, the math/science pathway of the National Science Digital Library.

Spicer, Judy

2011-02-04

406

Distal splenorenal shunt for portal hypertension.  

PubMed

A distal splenorenal shunt was performed electively in 25 patients with bleeding oesophageal varices. Early postoperative mortality was 16%. During the follow-up period (mean 41 months) three patients died, one of liver insufficiency and two of cardiac complications. Two patients of 17 survivors (12%) had endoscopically demonstrable varices. One of these patients had one upper gastrointestinal rebleeding period. The actual three year survival was 71%. Reverse portal blood flow was demonstrated postoperatively in eight of 17 patients (47%). In these cases the distal splenorenal shunt had in fact slowly turned to a total shunt. Even though in certain patients the original selectivity of the shunt is lost it gives a good long-term variceal decompression and certainly is a useful alternative in the treatment of selected good risk patients for bleeding oesophageal varices. PMID:6973313

Kallio, H; Lempinen, M

1981-01-01

407

Use of autogenous saphenous vein as a conduit for mesenterico-left portal vein bypass.  

PubMed

The authors describe a case of extrahepatic portal vein (EHPV) thrombosis and portal hypertension treated with a variant of mesenterico-left portal vein bypass (MLPVB) or Rex shunt. In this case, a segment of autogenous greater saphenous vein was used to bridge the distance between the left gastric vein inflow and the left portal vein. Use of such nontraditional conduit in similar circumstances may expand the application of portal revascularization/decompression procedures in treating these patients. PMID:17560237

Query, Julie A; Sandler, Anthony D; Sharp, William J

2007-06-01

408

Linking Educational Research Activities across Europe: A Review of the WIFO Gateway to Research on Education in Europe  

ERIC Educational Resources Information Center

|The WIFO Gateway to Research on Education in Europe (http://www.wifo-gate.org) is an Internet portal focusing on vocational education and training and human resource development. Launched 10 years ago by the Research Forum Education and Society (Wissenschaftsforum Bildung und Gesellschaft-WIFO) Berlin, it has developed in several stages in close…

Manning, Sabine

2007-01-01

409

Portal protein diversity and phage ecology  

PubMed Central

Oceanic phages are critical components of the global ecosystem, where they play a role in microbial mortality and evolution. Our understanding of phage diversity is greatly limited by the lack of useful genetic diversity measures. Previous studies, focusing on myophages that infect the marine cyanobacterium Synechococcus, have used the coliphage T4 portal-protein-encoding homologue, gene 20 (g20), as a diversity marker. These studies revealed 10 sequence clusters, 9 oceanic and 1 freshwater, where only 3 contained cultured representatives. We sequenced g20 from 38 marine myophages isolated using a diversity of Synechococcus and Prochlorococcus hosts to see if any would fall into the clusters that lacked cultured representatives. On the contrary, all fell into the three clusters that already contained sequences from cultured phages. Further, there was no obvious relationship between host of isolation, or host range, and g20 sequence similarity. We next expanded our analyses to all available g20 sequences (769 sequences), which include PCR amplicons from wild uncultured phages, non-PCR amplified sequences identified in the Global Ocean Survey (GOS) metagenomic database, as well as sequences from cultured phages, to evaluate the relationship between g20 sequence clusters and habitat features from which the phage sequences were isolated. Even in this meta-data set, very few sequences fell into the sequence clusters without cultured representatives, suggesting that the latter are very rare, or sequencing artefacts. In contrast, sequences most similar to the culture-containing clusters, the freshwater cluster and two novel clusters, were more highly represented, with one particular culture-containing cluster representing the dominant g20 genotype in the unamplified GOS sequence data. Finally, while some g20 sequences were non-randomly distributed with respect to habitat, there were always numerous exceptions to general patterns, indicating that phage portal proteins are not good predictors of a phage's host or the habitat in which a particular phage may thrive.

Sullivan, Matthew B; Coleman, Maureen L; Quinlivan, Vanessa; Rosenkrantz, Jessica E; DeFrancesco, Alicia S; Tan, G; Fu, Ross; Lee, Jessica A; Waterbury, John B; Bielawski, Joseph P; Chisholm, Sallie W

2008-01-01

410

Consortium for Oral Health-Related Informatics: Improving Dental Research, Education, and Treatment  

PubMed Central

Advances in informatics, particularly the implementation of electronic health records (EHR), in dentistry have facilitated the exchange of information. The majority of dental schools in North America use the same EHR system, providing an unprecedented opportunity to integrate these data into a repository that can be used for oral health education and research. In 2007, fourteen dental schools formed the Consortium for Oral Health-Related Informatics (COHRI). Since its inception, COHRI has established structural and operational processes, governance and bylaws, and a number of work groups organized in two divisions: one focused on research (data standardization, integration, and analysis), and one focused on education (performance evaluations, virtual standardized patients, and objective structured clinical examinations). To date, COHRI (which now includes twenty dental schools) has been successful in developing a data repository, pilot-testing data integration, and sharing EHR enhancements among the group. This consortium has collaborated on standardizing medical and dental histories, developing diagnostic terminology, and promoting the utilization of informatics in dental education. The consortium is in the process of assembling the largest oral health database ever created. This will be an invaluable resource for research and provide a foundation for evidence-based dentistry for years to come.

Stark, Paul C.; Kalenderian, Elsbeth; White, Joel M.; Walji, Muhammad F.; Stewart, Denice C.L.; Kimmes, Nicole; Meng, Thomas R.; Willis, George P.; DeVries, Ted; Chapman, Robert J.

2011-01-01

411

"Meaningful use" of EHR in dental school clinics: how to benefit from the U.S. HITECH Act's financial and quality improvement incentives.  

PubMed

Through the 2009 HITECH (Health Information Technology for Economic and Clinical Health) Act, the U.S. government committed $27 billion to incentivize the adoption and "meaningful use" of certified electronic health records (EHRs) by providers, including dentists. Given their patient profiles, dental school clinics are in a position to benefit from this time-delimited commitment to support the adoption and use of certified EHR technology under the Medicaid-based incentive. The benefits are not merely financial: rather, the meaningful use objectives and clinical quality measures can drive quality improvement initiatives within dental practices and help develop a community of medical and dental professionals focused on quality. This article describes how dentists can qualify as eligible providers and the set of activities that must be undertaken and attested to in order to obtain this incentive. Two case studies describe the approaches that can be used to meet the Medicaid threshold necessary to be eligible for the incentive. Dentists can and have successfully applied for meaningful use incentive payments. Given the diverse set of patients who are treated at dental schools, these dental practices are among those most likely to benefit from the incentive programs. PMID:23576586

Kalenderian, Elsbeth; Walji, Muhammad; Ramoni, Rachel B

2013-04-01

412

Social disparities in internet patient portal use in diabetes: evidence that the digital divide extends beyond access  

PubMed Central

The authors investigated use of the internet-based patient portal, kp.org, among a well-characterized population of adults with diabetes in Northern California. Among 14?102 diverse patients, 5671 (40%) requested a password for the patient portal. Of these, 4311 (76%) activated their accounts, and 3922 (69%), logged on to the patient portal one or more times; 2990 (53%) participants viewed laboratory results, 2132 (38%) requested medication refills, 2093 (37%) sent email messages, and 835 (15%) made medical appointments. After adjustment for age, gender, race/ethnicity, immigration status, educational attainment, and employment status, compared to non-Hispanic Caucasians, African–Americans and Latinos had higher odds of never logging on (OR 2.6 (2.3 to 2.9); OR 2.3 (1.9 to 2.6)), as did those without an educational degree (OR compared to college graduates, 2.3 (1.9 to 2.7)). Those most at risk for poor diabetes outcomes may fall further behind as health systems increasingly rely on the internet and limit current modes of access and communication.

Karter, Andrew J; Liu, Jennifer Y; Adler, Nancy E; Nguyen, Robert; Lopez, Andrea; Schillinger, Dean

2011-01-01

413

Portal Vein Thrombosis Following Laparoscopic Sleeve Gastrectomy for Morbid Obesity  

PubMed Central

Introduction: Portal vein thrombosis has been documented after laparoscopic general surgery and has been uncommonly observed after laparoscopic bariatric surgery. Among bariatric operations, the sleeve gastrectomy is being performed with ever-increasing frequency. Here we report the case of a man who presented with portal vein thrombosis after laparoscopic sleeve gastrectomy. Case Description: A 41-y-old man underwent an uneventful laparoscopic sleeve gastrectomy for the treatment of morbid obesity, and presented on postoperative day 10 with nonfocal abdominal pain, nausea, vomiting, and leukocytosis. Computed tomography revealed portal vein thrombosis, which was found in the setting of Clostridium difficile colitis. Discussion: Portal vein thrombosis may be identified with increasing frequency as the number of laparoscopic bariatric operations continues to increase. A high index of suspicion is necessary to diagnose this rare, but potentially lethal, complication.

Rosenberg, Jacob M.; Tedesco, Maureen; Yao, Dorcas C.

2012-01-01

414

9. DETAIL OF PRATT DECK TRUSS, AND NORTH PORTAL OF ...  

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

9. DETAIL OF PRATT DECK TRUSS, AND NORTH PORTAL OF PENNSYLVANIA PETIT TRUSS WITH CONCRETE SUPPORTING PIER, LOOKING SOUTHWEST - James Bethel Gresham Memorial Bridge, Spanning Green Pond River at Kentucky Route 81, Calhoun, McLean County, KY

415

B & P Tunnel west portal. Baltimore, Baltimore City, MD. ...  

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

B & P Tunnel west portal. Baltimore, Baltimore City, MD. Sec. 1201, MP 97.43. - Northeast Railroad Corridor, Amtrak route between District of Columbia/Maryland state line & Maryland/Delaware state line, Baltimore, Independent City, MD

416

B & P Tunnel east portal & North Avenue Bridge. ...  

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

B & P Tunnel east portal & North Avenue Bridge. Baltimore, Baltimore City, MD. Sec. 1201, MP 96.00. - Northeast Railroad Corridor, Amtrak route between District of Columbia/Maryland state line & Maryland/Delaware state line, Baltimore, Independent City, MD

417

[PORTAL HYPERTENSIVE GASTROPATHY AT HOSPITAL NACIONAL DELSUR - IPSS AREQUIPA  

PubMed

An analytic prospective study was done in cirrhotic patients with Portal hypertension to study a new pathology known as Portal Hypertensive Gastropathy. In 73.3 per cent of patients with cirrhosis, hospitalized inthe Gastroenterology Area, Portal Hypertensive Gastropathy was present. Males in the 4th decade of their life were predominant. Mild gastropathy with a mosaic or snake skin endoscopy pattern was the most frequent (60.6%), while in severe gastropathy, the most common pattern was cherry red spots. These lesions were often located in the stomach fundus and body. All the patients presented some vascular alteration and lymphoplasmocytic inflammatory infiltration. No relation was found between the severity of Portal Hypertension or Advanced Liver Disease and changes of the gastric mucosa. PMID:12215739

Cerpa Polar, Rusby; Castro Valdivia, Raúl; Valdez Herrera, Jesús

418

12. DETAIL OF A TYPICAL THROUGH PARKER TRUSS PORTAL SHOWING ...  

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

12. DETAIL OF A TYPICAL THROUGH PARKER TRUSS PORTAL SHOWING PIN CONNECTION OF LACED VERTICAL, MULTIPLE-BAR DIAGONALS, AND TOP CHORD - Twenty-first Street Bridge, Spanning Railroad tracks at Twenty-first Street, Saint Louis, Independent City, MO

419

13. DETAIL OF A TYPICAL THROUGH PARKER TRUSS PORTAL SHOWING ...  

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

13. DETAIL OF A TYPICAL THROUGH PARKER TRUSS PORTAL SHOWING PIN CONNECTION OF LACED VERTICAL, MULTIPLE-BAR DIAGONALS, AND TOP CHORD - Twenty-first Street Bridge, Spanning Railroad tracks at Twenty-first Street, Saint Louis, Independent City, MO

420

4. LOOKING LANDWARD TO SOUTHEAST, PAST MANHOLE, TO ABANDONED PORTAL. ...  

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

4. LOOKING LANDWARD TO SOUTHEAST, PAST MANHOLE, TO ABANDONED PORTAL. - Mile Rock Tunnel, Under Forty-eighth Avenue from Cabrillo Street to San Francisco Bay at Point Lobos, San Francisco, San Francisco County, CA

421

9. OBLIQUE VIEW, NORTH PORTAL AND TIMBER DECK, FROM NORTHWEST, ...  

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

9. OBLIQUE VIEW, NORTH PORTAL AND TIMBER DECK, FROM NORTHWEST, SHOWING INCLINED ENDPOSTS, OVERHEAD BRACING, VERTICALS OF EASTTRUSS PANELS, EAST RAILING, AND TRANSVERSE DECK PLANKS - River Road Bridge, Crossing Casselman River on Casselman River Road, Grantsville, Garrett County, MD

422

Intussusception and Colonic Ischemia in Portal Hypertension: A Case Report  

PubMed Central

Intestinal intussusception is a relatively uncommon occurrence in adults in comparison to pediatric patients. While the management of intussusception in children is frequently decompression of the involved segment, adults often require surgical resection secondary to frequent association with neoplastic lead points. A less common reason for surgical removal of an intussuscepted segment in adults is the development of ischemic colitis. The authors present an unusual case of adult intussusception with associated ischemic colitis in a patient with portal hypertension awaiting liver transplantation. Portal hypertension is associated with the development of a microvascular colopathy. This condition may serve as the lead point for intestinal intussusception. Furthermore, the vascular changes of portal hypertension leave the bowel unable to respond appropriately to the threat of ischemia. The colopathy of portal hypertension may have predisposed our patient to the development of colonic intussusception by submucosal vascular engorgement; it may have also rendered the intussuscepted segment more susceptible to the development of ischemia.

Plackett, Timothy P; Coviello, Lisa C; Belnap, Christina M; Phillips, Kimberley J; Gagliano, Ronald A

2010-01-01

423

AERIAL VIEW, LOOKING SOUTH, OF SHENANDOAHDIVES (MAYFLOWER) MINE PORTAL, IN ...  

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

AERIAL VIEW, LOOKING SOUTH, OF SHENANDOAH-DIVES (MAYFLOWER) MINE PORTAL, IN SHADOW AT WIDENED END OF ROAD, THREE-EIGHTHS FROM THE BOTTOM. - Shenandoah-Dives Mill, 135 County Road 2, Silverton, San Juan County, CO

424

SHENANDOAHDIVES (MAYFLOWER) MINE PORTAL SITE, LOOKING WEST. NOTE FOUNDATION AT ...  

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

SHENANDOAH-DIVES (MAYFLOWER) MINE PORTAL SITE, LOOKING WEST. NOTE FOUNDATION AT RIGHT AND RADIATOR AT LOWER LEFT, BOTH REMNANTS OF THE DORMITORY. - Shenandoah-Dives Mill, 135 County Road 2, Silverton, San Juan County, CO

425

163. VIEW OF TWO JOHNS MINE PORTAL FROM EAST. NOTE ...  

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

163. VIEW OF TWO JOHNS MINE PORTAL FROM EAST. NOTE WATER LINE ON BRIDGE; DEWATERING MINE SUPPLIED A PORTION OF THE MILL'S WATER SUPPLY. - Bald Mountain Gold Mill, Nevada Gulch at head of False Bottom Creek, Lead, Lawrence County, SD

426

7. EAST PORTAL OF CONCRETE LINED CULVERT LOCATED 30 YARDS ...  

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

7. EAST PORTAL OF CONCRETE LINED CULVERT LOCATED 30 YARDS WEST OF HAPPY ISLES BRIDGE. NOTE ROCK & CONCRETE FLOOR. - Happy Isles Bridge, Spanning Merced River on Service road, Yosemite Village, Mariposa County, CA

427

46. View of access portal holes drilled to place steel ...  

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

46. View of access portal holes drilled to place steel ties in Pleasant Dam buttresses. Photographer unknown, 1935. Source: Huber Collection. - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

428

Detail of inside of inclined end post, with portal cross ...  

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

Detail of inside of inclined end post, with portal cross bar member. - Phoenix Iron Company, French Creek Bridge, Spanning French Creek between Gay Street & Main Street, Phoenixville, Chester County, PA

429

View of the Colorado River Canyon showing lower portal road ...  

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

View of the Colorado River Canyon showing lower portal road in background taken from the rim of Hoover Dam, view south - Hoover Dam, Spanning Colorado River at Route 93, Boulder City, Clark County, NV

430

Grid infrastructure to support science portals for large scale instruments.  

National Technical Information Service (NTIS)

Soon, a new generation of scientific workbenches will be developed as a collaborative effort among various research institutions in the US. These scientific workbenches will be accessed in the Web via portals. Reusable components are needed to build such ...

G. von Laszewski I. Foster

1999-01-01

431

Detail of portal of Span No. 9, showing roadway deck, ...  

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

Detail of portal of Span No. 9, showing roadway deck, guardrails and truss, view to east - Gillespie Dam Bridge, Spanning Gila River on Old US 80 Highway, south of Gillespie Dam, Arlington, Maricopa County, AZ

432

Oblique perspective of portal, due north. Bridge has gable roof ...  

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

Oblique perspective of portal, due north. Bridge has gable roof clad with wood shingles and has board and batten siding. - Watson Mill Bridge, Spanning South Fork Broad River, Watson Mill Road, Watson Mill Bridge State Park, Comer, Madison County, GA

433

The Astrophysics Simulation Collaboratory portal: A framework foreffective distributed research  

SciTech Connect

We describe the motivation, architecture, and implementation of the Astrophysics Simulation Collaboratory (ASC) portal. The ASC project provides a web-based problem solving framework for the astrophysics community that harnesses the capabilities of emerging computational grids.

Bondarescu, Ruxandra; Allen, Gabrielle; Daues, Gregory; Kelly,Ian; Russell, Michael; Seidel, Edward; Shalf, John; Tobias, Malcolm

2003-03-03

434

23. Left Inclined End Post, Portal Bracing & Strut, and ...  

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

23. Left Inclined End Post, Portal Bracing & Strut, and Left Panels 1 - 4; South Swing Span; looking NNE. - Pacific Shortline Bridge, U.S. Route 20,spanning Missouri River, Sioux City, Woodbury County, IA

435

Grid infrastructure to support science portals for large scale instruments.  

SciTech Connect

Soon, a new generation of scientific workbenches will be developed as a collaborative effort among various research institutions in the US. These scientific workbenches will be accessed in the Web via portals. Reusable components are needed to build such portals for different scientific disciplines, allowing uniform desktop access to remote resources. Such components will include tools and services enabling easy collaboration, job submission, job monitoring, component discovery, and persistent object storage. Based on experience gained from Grand Challenge applications for large-scale instruments, we demonstrate how Grid infrastructure components can be used to support the implementation of science portals. The availability of these components will simplify the prototype implementation of a common portal architecture.

von Laszewski, G.; Foster, I.

1999-09-29

436

2. PORTAL VIEW OF BRIDGE FROM NORTH SIDE OF SANITARY ...  

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

2. PORTAL VIEW OF BRIDGE FROM NORTH SIDE OF SANITARY AND SHIP CANAL, LOOKING SOUTHEAST. - Chicago, Madison & Northern Railroad, Sanitary & Ship Canal Bridge, Spanning Sanitary & Ship Canal, east of Kedzie Avenue, Chicago, Cook County, IL

437

3. DETAIL OF TRUSS PANELS AND INCLINED PORTAL MEMBER AT ...  

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

3. DETAIL OF TRUSS PANELS AND INCLINED PORTAL MEMBER AT THE SOUTHEAST ENTRANCE TO THE BRIDGE, LOOKING WEST. - Chicago, Madison & Northern Railroad, Sanitary & Ship Canal Bridge, Spanning Sanitary & Ship Canal, east of Kedzie Avenue, Chicago, Cook County, IL

438

4. DETAIL OF BUILDER'S PLATE ON SOUTH PORTAL (PLATE READS ...  

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

4. DETAIL OF BUILDER'S PLATE ON SOUTH PORTAL (PLATE READS 'AMERICAN BRIDGE COMPANY, U.S.A., 1935'). - Santa Fe Railroad, llinois & Michigan Canal Bridge, Crossing I&M Canal at Des Plaines River, Joliet, Will County, IL

439

General view of north portals showing three abandoned roadbeds. View ...  

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

General view of north portals showing three abandoned roadbeds. View south - New York, New Haven & Hartford Railroad, Fort Point Channel Rolling Lift Bridge, Spanning Fort Point Channel, Boston, Suffolk County, MA

440

Detail of track girder, south portal and granite piers at ...  

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

Detail of track girder, south portal and granite piers at low tide. View Northwest - New York, New Haven & Hartford Railroad, Fort Point Channel Rolling Lift Bridge, Spanning Fort Point Channel, Boston, Suffolk County, MA

441

3. UPPER END, OR SOUTH PORTAL, OF THE WEHRLI TUNNEL ...  

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

3. UPPER END, OR SOUTH PORTAL, OF THE WEHRLI TUNNEL ON THE POWER CANAL Photographer: Walter J. Lubken, April 1, 1905 - Roosevelt Power Canal & Diversion Dam, Parallels Salt River, Roosevelt, Gila County, AZ

442

New Containment and Surveillance Portal Monitor Data Analysis Methed.  

National Technical Information Service (NTIS)

A new containment and surveillance portal monitor data analysis method has been developed. Current approaches use only the data from a single passage and an average background interval for alarm determination. The new method improves performance by summin...

C. N. Henry J. C. Pratt

1979-01-01

443

Design of Grid Portal System Based on RIA  

NASA Astrophysics Data System (ADS)

Grid portal is an important branch of grid research. In order to solve the weak expressive force, the poor interaction, the low operating efficiency and other insufficiencies of the first and second generation of grid portal system, RIA technology was introduced to it. A new portal architecture was designed based on RIA and Web service. The concrete realizing scheme of portal system was presented by using Adobe Flex/Flash technology, which formed a new design pattern. In system architecture, the design pattern has B/S and C/S superiorities, balances server and its client side, optimizes the system performance, realizes platform irrelevance. In system function, the design pattern realizes grid service call, provides client interface with rich user experience, integrates local resources by using FABridge, LCDS, Flash player and some other components.

Cao, Caifeng; Luo, Jianguo; Qiu, Zhixin

444

7. Straighton view of east portal. Jack Boucher, photographer, 1977 ...  

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

7. Straight-on view of east portal. Jack Boucher, photographer, 1977 - Neshanic Station Lenticular Truss Bridge, State Route 567, spanning South Branch of Raritan River, Neshanic Station, Somerset County, NJ

445

75 FR 24470 - Health Care Reform Insurance Web Portal Requirements  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF HEALTH AND HUMAN SERVICES Office of the Secretary 45 CFR Part 159 RIN 0991-AB63 Health Care Reform Insurance Web Portal Requirements...in their State. The Department of Health and Human Services (HHS) is...

2010-05-05

446

The Integrated Web Portal for Escalation with Overdose Control (EWOC)  

PubMed Central

In this paper, we present the design and implementation of a novel web portal for the cancer phase I clinical trial design method Escalation with Overdose Control (EWOC). The web portal has two major components: a web-based dose finding calculator; and a standalone and downloadable dose finding software which can be installed on Windows operating systems. The web-based dose finding calculator uses industry standards and is a database-driven and distributed computing platform for designing and conducting dose finding in cancer phase I clinical trials utilizing EWOC methodology. The web portal is developed using open source software: PHP, JQuery, R and OpenBUGS. It supports any standard browsers with internet connection. The web portal can be accessed at: http://biostatistics.csmc.edu.

Wang, Haibin; Tighiouart, Mourad; Huang, Shao-Chi; Berel, Dror; Cook-Wiens, Galen; Bresee, Catherine; Li, Quanlin; Rogatko, Andre

2013-01-01

447

GRACE Educational Material  

NSDL National Science Digital Library

This portal provides access to learning materials derived from the Gravity Recovery and Climate Experiment (GRACE) mission. These include a large set of activities for students at all levels, tested and aligned to the national education standards. Topics include satellites and gravity; the weather, climate, and atmosphere; and the oceans. There is also a coloring and activity book, posters and illustrations describing the mission, a mission brochure, and a fact sheet.

448

Prevalence of autonomic dysfunction in cirrhotic and noncirrhotic portal hypertension  

Microsoft Academic Search

OBJECTIVE:Autonomic dysfunction is common in patients with cirrhosis of the liver, but more so in patients with decompensated state, and is associated with increased mortality. We evaluated the presence and extent of autonomic dysfunction in patients with extrahepatic portal venous obstruction (EHPVO) and noncirrhotic portal fibrosis (NCPF), diseases with relatively preserved liver functions.METHODS:Heart rate variability in response to standing, deep

Manisha Rangari; S. Sinha; Dharmesh Kapoor; Jagdish C. Mohan; Shiv K. Sarin

2002-01-01

449

A Multilevel Integration Approach for E-Finance Portal Development  

Microsoft Academic Search

E-finance industry is rapidly transforming and evolving toward more dynamic, flexible and intelligent solutions. The proposed\\u000a e-flnance portal provides an integrated enterprise platform for retail banking services as well as for other financial services.\\u000a In the meantime, the proposed multilevel solution will keep monitoring and analyzing the huge volume of dynamic information\\u000a flowing through the portal. In this way, the

Jia Hu; Ning Zhong

2008-01-01

450

Automating the Construction of Internet Portals with Machine Learning  

Microsoft Academic Search

Domain-specific internet portals are growing in popularity because they gather content from the Web and organize it for easy access, retrieval and search. For example, www.campsearch.com allows complex queries by age, location, cost and specialty over summer camps. This functionality is not possible with general, Web-wide search engines. Unfortunately these portals are difficult and time-consuming to maintain. This paper advocates

Andrew Kachites McCallum; Kamal Nigam; Jason Rennie; Kristie Seymore

2000-01-01

451

Automating the Construction of Internet Portals with Machine Learning  

Microsoft Academic Search

Internet portals are growing in popularity because they gather content from the Web and organize it for easy access, retrieval and search. For example, www.campsearch.com allows complex queries by age-group, size, location and cost over summer camps. This functionality is not possible with general, Web-wide search engines. Unfortunately these portals are dicult and time-consuming to maintain. This paper proposes the

Andrew Mccallum; Kamal Nigam; Jason Rennie; Kristie Seymore

2000-01-01

452

13. Detail, portal connection point of 1898 swing span, Bridge ...  

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

13. Detail, portal connection point of 1898 swing span, Bridge Number 210.52, view to northeast, 210mm lens. Visible are the latticed portal strut at right, inclined end post, vertical hanger, top chord at left, paired diagonal eyebars, and one end of a top lateral. - Southern Pacific Railroad Shasta Route, Bridge No. 210.52, Milepost 210.52, Tehama, Tehama County, CA

453

An inverse source location algorithm for radiation portal monitor applications  

Microsoft Academic Search

Radiation portal monitors are being deployed at border crossings throughout the world to prevent the smuggling of nuclear and radiological materials; however, a tension exists between security and the free-flow of commerce. Delays at ports-of-entry have major economic implications, so it is imperative to minimize portal monitor screening time. We have developed an algorithm to locate a radioactive source using

Karen A Miller; William S Charlton

2010-01-01

454

High contrast, CdTe portal scanner for radiation therapy  

Microsoft Academic Search

A solid state, CdTe, linear array, portal imaging system is presented. One of the most promising new technologies for improving the quality of radiation therapy is the use of real-time systems to produce portal images. In the approach presented, a linear array of 256 CdTe photovoltaic detectors attached to a very compact linear scanner, all of which will be mounted

G. Entine; M. R. Squillante; R. Hahn; L. J. Cirignano; W. McGann; P. J. Biggs

1992-01-01

455

MR image-guided portal verification for brain treatment field  

Microsoft Academic Search

Purpose: To investigate a method for the generation of digitally reconstruction radiographs directly from MR images (DRR-MRI) to guide a computerized portal verification procedure.Methods and Materials: Several major steps were developed to perform an MR image-guided portal verification procedure. Initially, a wavelet-based multiresolution adaptive thresholding method was used to segment the skin slice-by-slice in MR brain axial images. Some selected

Fang-Fang Yin; Qinghuai Gao; Huchen Xie; Diana F. Nelson; Yan Yu; W. Edmund Kwok; Saara Totterman; Michael C. Schell; Philip Rubin

1998-01-01

456

Portal vein thrombosis and pulmonary artery thromboembolism after laparoscopic colectomy.  

PubMed

Portal vein thrombosis is a rare and potentially lethal complication of laparoscopic colectomy. In this paper, we present a case of portal vein thrombosis and pulmonary artery thromboembolism on the 11(th) day after laparoscopic colectomy without an evident congenital thrombotic disorder. Laparoscopic surgeons and their patients should be aware of such events, because the patients are usually discharged before the symptoms begin. PMID:21091380

Shinozaki, Masaru; Hata, Keisuke; Matsukura, Mitsuru; Mizuno, Yasuhiro; Takei, Junko; Tsurita, Giichiro

2010-11-24

457

Accurate portal dose measurement with a fluoroscopic electronic portal imaging device (EPID) for open and wedged beams and dynamic multileaf collimation  

Microsoft Academic Search

Measuring portal dose with an electronic portal imaging device (EPID) in external beam radiotherapy can be used to perform routine dosimetric quality control checks on linear accelerators and to verify treatments ( in vivo dosimetry). An accurate method to measure portal dose images (PDIs) with a commercially available fluoroscopic EPID has been developed. The method accounts for (i) the optical

K. L. Pasma; M. Kroonwijk; J. C. J. de Boer; A. G. Visser; B. J. M. Heijmen

1998-01-01

458

Taurocholate induced gastric mucosal injuries in experimental portal hypertension.  

PubMed Central

The susceptibility of the gastric mucosa to injury by topical sodium taurocholate (40 mmol/l) in hydrochloric acid (150 mmol/l) was studied in prehepatic and cirrhotic rat models of portal hypertension. Portal venous pressure was increased in rats who had undergone partial portal vein ligation compared with rats that had undergone sham operation on days 3, 7, and 28 after operation (20.6 (0.9), 14.8 (0.8), and 11.3 (0.5) mm Hg v 7.3 (0.7), 7.3 (0.6), and 8.2 (0.2) mmHg respectively (mean (SEM)). At day 3 gastric mucosal injuries were increased in rats with partial portal vein ligation compared with sham operated rats (55.3 (9.4) vs 22.3 (10.5) mm2, p = 0.006), but at the later time intervals there was no significant difference in injuries between the two groups. In rats with carbon tetrachloride induced hepatic cirrhosis, portal pressure was increased (15.6 (1.0) v 6.7 (0.6) mmHg), but again there was no significant difference in mucosal injuries relative to control animals. We conclude that gastric mucosal defence mechanisms are impaired in acute but not chronic experimental portal hypertension.

Angerson, W J; Geraghty, J G; Carter, D C

1992-01-01

459

Care Benefits from EHRs  

MedlinePLUS

... and hospitalizations’ (end of quote). Meanwhile, MedlinePlus.gov’s personal health records health topic page provides information about the physician ... in the ‘MedlinePlus Magazine’ section of MedlinePlus.gov’s personal health records health topic page. A helpful explanation (from the ...

460

EHR/PHR Basics  

MedlinePLUS

... a hospital, an insurance company, or an employer. Electronic Health Records—Are They Secure? Many people wonder ... information is kept private and secure in an electronic health record system. In an electronic health record, ...

461

The Paleontology Portal: An online resource meeting the needs a spectrum of learners  

NASA Astrophysics Data System (ADS)

The Paleontology Portal website provides a central, interactive entry point to high-quality North American paleontology resources on the Internet for multiple audiences: the research community, government and industry, K-16 students, and the general public. The Portal successfully blends research and education, pulling together information with reviewed and annotated website links for a wide variety of informal learners. Using web-based technology and relational databases, users can explore an interactive map and associated stratigraphic column to access information about particular geographic regions, geologic time periods, depositional environments, and representative taxa. Users are also able to search multiple museum collection databases using a single query form of their own design. Other features include highlights of famous fossil sites and assemblages and a fossil image gallery. Throughout the site, users find images and links to information specific to each time period or geographic region, including current research projects and publications, websites, on-line exhibits and educational materials, and information on collecting fossils. The next phase of development will target the development of resource modules on topics such as collection management and fossil preparation, appropriate for users ranging from the general public to professional paleontologists. Another initiative includes developing methods of personalizing the Portal to support exhibits at museums and other venues on geological history and paleontology. The Paleontology Portal, built by the UC Museum of Paleontology, is a joint project of the Society of Vertebrate Paleontology, the Paleontological Society, and the US Geological Survey, in collaboration with the Paleontological Research Institution, the Fort Worth Museum of Science and History, and the Denver Museum of Nature and Science, which serve as hubs for the project. Paleoportal serves as an effective model in two aspects: (1) providing access to a spectrum of reviewed resources from a single starting interface that enables users from novice to professional to access background-appropriate information, and (2) involvement of a wide range of stakeholders (professional societies, universities and museums, and individuals) in both concept development and management. The project is funded by the National Science Foundation under award no. 0234594

Lindberg, D.; Scotchmoor, J. G.

2005-12-01

462

First Results from the Asteroseismic Modeling Portal  

NASA Astrophysics Data System (ADS)

Asteroseismology will soon place our understanding of the Sun into a broader context by providing structural information for hundreds of solar-type stars. In the past, ground-based data on solar-like oscillations have emerged slowly enough that we could try to model one star at a time. NASA's Kepler mission is now producing asteroseismic data for hundreds of stars every few months, so a hands-on approach is a luxury we can no longer afford. We have developed a stellar model-fitting pipeline, which employs a parallel genetic algorithm to match observations from the Kepler mission. We have validated the method using Sun-as-a-star observations as well as data from a wide variety of solar-type stars. The pipeline is now available through the Asteroseismic Modeling Portal (AMP), a Science Gateway website tied to supercomputing resources on the TeraGrid. In this talk, I provided an overview of AMP and presented some of the first results from its automated analysis of both ground-based and space-based asteroseismic data sets.

Metcalfe, T. S.; Mathur, S.; Do?an, G.; Woitaszek, M.

2012-09-01

463

The Rat Genome Database Pathway Portal  

PubMed Central

The set of interacting molecules collectively referred to as a pathway or network represents a fundamental structural unit, the building block of the larger, highly integrated networks of biological systems. The scientific community's interest in understanding the fine details of how pathways work, communicate with each other and synergize, and how alterations in one or several pathways may converge into a disease phenotype, places heightened demands on pathway data and information providers. To meet such demands, the Rat Genome Database [(RGD) http://rgd.mcw.edu] has adopted a multitiered approach to pathway data acquisition and presentation. Resources and tools are continuously added or expanded to offer more comprehensive pathway data sets as well as enhanced pathway data manipulation, exploration and visualization capabilities. At RGD, users can easily identify genes in pathways, see how pathways relate to each other and visualize pathways in a dynamic and integrated manner. They can access these and other components from several entry points and effortlessly navigate between them and they can download the data of interest. The Pathway Portal resources at RGD are presented, and future directions are discussed. Database URL: http://rgd.mcw.edu

Petri, Victoria; Shimoyama, Mary; Hayman, G. Thomas; Smith, Jennifer R.; Tutaj, Marek; de Pons, Jeff; Dwinell, Melinda R.; Munzenmaier, Diane H.; Twigger, Simon N.; Jacob, Howard J.

2011-01-01

464

Overview of Portal Monitoring at Border Crossings  

SciTech Connect

The Bureau of Customs and Border Protection has the task of interdicting illicit radioactive material at ports of entry. Items of concern include radiation dispersal devices (RDD), nuclear warheads, and special nuclear material (SNM). The preferred survey method screens all vehicles in primary and diverts questionable vehicles to secondary. This requires high detection probability in primary while not overwhelming secondary with alarms, which could include naturally occurring radioactive material (NORM) found in acceptable cargo and radionuclides used in medical procedures. Sensitive alarm algorithms must accommodate the baseline depression observed whenever a vehicle enters the portal. Energy-based algorithms can effectively use the crude energy information available from a plastic scintillator to distinguish NORM from SNM. Whenever NORM cargo limits the alarm threshold, energy-based algorithms produce significantly better detection probabilities for small SNM sources than gross-count algorithms. Algorithms can be best evaluated using a large empirical data set to 1) calculate false alarm probabilities, 2) select sigma-level thresholds for operationally acceptable false alarm rates, and 3) determine detection probabilities for marginally detectable pseudo sources of SNM.

Geelhood, Bruce D.; Ely, James H.; Hansen, Randy R.; Kouzes, Richard T.; Schweppe, John E.; Warner, Ray A.

2003-10-01

465

GCMD Portals for Focused Access to Earth and Climate Data  

NASA Astrophysics Data System (ADS)

Are you finding the data you need? Are you overwhelmed by too much data and not enough direction as to what is the right data for you? Is Google still not getting you to the data? With recent movies portraying climate change disasters, scientists need to be able to easily find available Earth, solar and climate data. Locating the vast amount of Earth science data and tools available today, can be difficult for users. NASA's Global Change Master Directory (GCMD) has a diverse collection of metadata describing data and tools from the Earth's core to solar interactions and their influences on climate and life. With over 15,000 metadata records in the GCMD database users may still feel the task of finding the right data daunting. The GCMD has a solution: customized access to subsets of the database content through "portals". Portals are a virtual subsets of the metadata found in the GCMD, which allow users to view smaller, related groups of metadata. Some portals are representative of a specific scientific community or project, such as the Antarctic Master Directory (AMD), which represents an international collaboration conducting scientific research in Antarctica. Users looking specifically for models or model output data may find the Model portal useful. Other portals such as the Sun-Earth Interact