WorldWideScience

Sample records for providing play portfolios

  1. Preparedness Portfolios and Portfolio Studios

    Science.gov (United States)

    Turns, Jennifer; Sattler, Brook; Eliot, Matt; Kilgore, Deborah; Mobrand, Kathryn

    2012-01-01

    We live in a time of great enthusiasm for the role that e-Portfolios can play in education and a time of exploration in which educators and researchers are investigating different approaches to using ePortfolios to differentially support educational goals. In this paper, we focus on preparedness portfolios and portfolio studios as two key…

  2. Customer portfolios

    DEFF Research Database (Denmark)

    Clarke, Ann Højbjerg; Freytag, Per Vagn; Zolkiewski, Judith

    2017-01-01

    gives managers a tool to help to cope with the dynamic aspects of the customer portfolio. Recognition of the importance of communication to the process, the development of trust and the role of legitimacy also provides areas that managers can focus upon in their relationship management processes...

  3. Portfolio Optimization

    OpenAIRE

    Frajtova-Michalikova, Katarina; Spuchľakova, Erika; Misankova, Maria

    2015-01-01

    In this paper Portfolio Optimization techniques were used to determine the most favorable investment portfolio. In particular, stock indices of three companies, namely Microsoft Corporation, Christian Dior Fashion House and Shevron Corporation were evaluated. Using this data the amounts invested in each asset when a portfolio is chosen on the efficient frontier were calculated. In addition, the Portfolio with minimum variance, tangency portfolio and optimal Markowitz portfolio are presented.

  4. Arbitrage Portfolios

    OpenAIRE

    Rodolfo Apreda

    2001-01-01

    It should be expected from this paper an expansion on some distinctive issues regarding arbitrage portfolios: i) a definition on arbitrage portfolios that enables adjustments to SML and CML environments; ii) sufficient conditions to set up arbitrage portfolios against the SML and CML; iii) feasibility of separation portfolios to carry out arbitrage not only against SML but CML as well; iv) arbitrage of portfolios located in Treynor’s lines by using separation portfolios within a SML environme...

  5. Providing Supplemental Counseling Experiences: Alternatives to Role-Playing.

    Science.gov (United States)

    Hazler, Richard J.; Singer, Mark J.

    This paper offers a rationale and introduction to three innovative techniques which provide initial counseling experiences to trainees in the helping professions. The development of a cooperative program with the drama department to train and utilize drama students as coached clients is described as the first technique. The second technique is…

  6. The games psychologists play (and the data they provide).

    Science.gov (United States)

    Washburn, David A

    2003-05-01

    Computer games and the technologies marketed to support them provide unique resources for psychological research. In contrast to the sterility, simplicity, and artificiality that characterizes many cognitive tests, game-like tasks can be complex, ecologically valid, and even fun. In the present paper,the history of psychological research with video games is reviewed, and several thematic benefits of this paradigm are identified. These benefits, as well as the possible pitfalls of research with computer game technology and game-like tasks, are illustrated with data from comparative and cognitive investigations.

  7. PLAY ANALYSIS AND DIGITAL PORTFOLIO OF MAJOR OIL RESERVOIRS IN THE PERMIAN BASIN: APPLICATION AND TRANSFER OF ADVANCED GEOLOGICAL AND ENGINEERING TECHNOLOGIES FOR INCREMENTAL PRODUCTION OPPORTUNITIES

    Energy Technology Data Exchange (ETDEWEB)

    Shirley P. Dutton; Eugene M. Kim; Ronald F. Broadhead; William Raatz; Cari Breton; Stephen C. Ruppel; Charles Kerans; Mark H. Holtz

    2003-04-01

    A play portfolio is being constructed for the Permian Basin in west Texas and southeast New Mexico, the largest petroleum-producing basin in the US. Approximately 1300 reservoirs in the Permian Basin have been identified as having cumulative production greater than 1 MMbbl of oil through 2000. Of these major reservoirs, approximately 1,000 are in Texas and 300 in New Mexico. On a preliminary basis, 32 geologic plays have been defined for Permian Basin oil reservoirs and assignment of each of the 1300 major reservoirs to a play has begun. The reservoirs are being mapped and compiled in a Geographic Information System (GIS) by play. Detailed studies of three reservoirs are in progress: Kelly-Snyder (SACROC unit) in the Pennsylvanian and Lower Permian Horseshoe Atoll Carbonate play, Fullerton in the Leonardian Restricted Platform Carbonate play, and Barnhart (Ellenburger) in the Ellenburger Selectively Dolomitized Ramp Carbonate play. For each of these detailed reservoir studies, technologies for further, economically viable exploitation are being investigated.

  8. Providing Policy Implication Based on the R and D Portfolio Analysis in Advanced Countries in the Nuclear Technology

    Energy Technology Data Exchange (ETDEWEB)

    Moon, K. H.; Lee, M. K.; Won, B. C.; Kim, S. S.; Lee, J. H.; Yun, S. W.; Jeong, I. K.; Lee, Y. C.; Lee, Y. J.; Kim, Y. S.

    2013-08-15

    This study is to provide the investment direction of nuclear R and D, which is the most efficient and reasonable integrating the various aspects comprehensively. This study includes four parts. In the first part, we extracted Mega-trend and driving forces of nuclear R and D field by using various reports published by National Intelligence Council of US, UN, etc. Also, in this part we established the linkage between megatrend factors focussing on nuclear and the five aspects including society, technology, ecology, economics and politics. In the second part, we analyzed the nuclear R and D investment directions of major advanced countries including US, Japan, EU and China for comparing the investment portfolio in the specific research area. In the third part, domestic investment of nuclear R and D was reviewed by analyzing the investment trend of nuclear R and D in the past, with their connection to nuclear policy, and to the levels and capacities of national technologies of nuclear. In the final part, the desirable directions of nuclear R and D investment were suggested comprehensively taking into consideration various aspects including the Mega-trend associated with nuclear, nuclear R and D directions of major advanced countries, and the level and capacities of the domestic nuclear technologies.

  9. Play Analysis and Digital Portfolio of Major Oil Reservoirs in the Permian Basin: Application and Transfer of Advanced Geological and Engineering Technologies for Incremental Production Opportunities

    Energy Technology Data Exchange (ETDEWEB)

    Shirley P. Dutton; Eugene M. Kim; Ronald F. Broadhead; Caroline L. Breton; William D. Raatz; Stephen C. Ruppel; Charles Kerans

    2004-01-13

    A play portfolio is being constructed for the Permian Basin in west Texas and southeast New Mexico, the largest onshore petroleum-producing basin in the United States. Approximately 1,300 reservoirs in the Permian Basin have been identified as having cumulative production greater than 1 MMbbl (1.59 x 10{sup 5} m{sup 3}) of oil through 2000. Of these significant-sized reservoirs, approximately 1,000 are in Texas and 300 in New Mexico. There are 32 geologic plays that have been defined for Permian Basin oil reservoirs, and each of the 1,300 major reservoirs was assigned to a play. The reservoirs were mapped and compiled in a Geographic Information System (GIS) by play. The final reservoir shapefile for each play contains the geographic location of each reservoir. Associated reservoir information within the linked data tables includes RRC reservoir number and district (Texas only), official field and reservoir name, year reservoir was discovered, depth to top of the reservoir, production in 2000, and cumulative production through 2000. Some tables also list subplays. Play boundaries were drawn for each play; the boundaries include areas where fields in that play occur but are smaller than 1 MMbbl (1.59 x 10{sup 5} m{sup 3}) of cumulative production. Oil production from the reservoirs in the Permian Basin having cumulative production of >1 MMbbl (1.59 x 10{sup 5} m{sup 3}) was 301.4 MMbbl (4.79 x 10{sup 7} m{sup 3}) in 2000. Cumulative Permian Basin production through 2000 was 28.9 Bbbl (4.59 x 10{sup 9} m{sup 3}). The top four plays in cumulative production are the Northwest Shelf San Andres Platform Carbonate play (3.97 Bbbl [6.31 x 10{sup 8} m{sup 3}]), the Leonard Restricted Platform Carbonate play (3.30 Bbbl [5.25 x 10{sup 8} m{sup 3}]), the Pennsylvanian and Lower Permian Horseshoe Atoll Carbonate play (2.70 Bbbl [4.29 x 10{sup 8} m{sup 3}]), and the San Andres Platform Carbonate play (2.15 Bbbl [3.42 x 10{sup 8} m{sup 3}]). Detailed studies of three reservoirs

  10. Portfolio Analysis for Vector Calculus

    Science.gov (United States)

    Kaplan, Samuel R.

    2015-01-01

    Classic stock portfolio analysis provides an applied context for Lagrange multipliers that undergraduate students appreciate. Although modern methods of portfolio analysis are beyond the scope of vector calculus, classic methods reinforce the utility of this material. This paper discusses how to introduce classic stock portfolio analysis in a…

  11. Play.

    Science.gov (United States)

    Rogers, Fred; Sharapan, Hedda

    1993-01-01

    Contends that, in childhood, work and play seem to come together. Says that for young children their play is their work, and the more adults encourage children to play, the more they emphasize important lifelong resource. Examines some uses of children's play, making and building, artwork, dramatic play, monsters and superheroes, gun play, and…

  12. Like Portfolios for Assessment (Middle School).

    Science.gov (United States)

    Katz, Claudia Anne; Johnson-Kuby, Sue Ann

    1996-01-01

    Describes 10 variations on the portfolio for assessment: literacy portfolio, reflection portfolio, "reflection the beauty" portfolio, process portfolio, student portfolio, reading portfolio, featherweight portfolio, showcase portfolio, exit portfolio, and literacy portfolio revisited. Accompanies each one with a "recipe." (SR)

  13. Continued professional competence and portfolios.

    Science.gov (United States)

    Byrne, Michelle; Delarose, Teresa; King, Cecil A; Leske, Jane; Sapnas, Kathryn G; Schroeter, Kathryn

    2007-01-01

    It is traditionally assumed that licensure of healthcare professionals means that they are minimally competent. Many nursing specialty organizations offer examinations and other processes for certification, suggesting that certification is associated with continued competency. Can standardized examination for certification and continuing education for recertification ensure continued competency? Continuing education and testing provide a limited picture of an individual's knowledge and/or skill acquisition in a limited area at one point in time. However, portfolios promote critical thinking, self-assessment, and individual accountability. A portfolio is a portable mechanism for evaluating competencies that may otherwise be difficult to assess. This article summarizes some of the literature addressing portfolios, including aspects of portfolio development process, the value of portfolios versus continuing education for competency assessment, evidence associated with portfolio usage, and suggestions for organizing nursing portfolios.

  14. Portfolio Assessment.

    Science.gov (United States)

    Dagavarian, Debra A.

    The portfolio assessment process at Thomas A. Edison State College is described in this report. Through portfolio assessment, the school helps students identify and gain credit for college-level skills and knowledge acquired through work, volunteer activities, independent reading, military or corporate training, and life experiences that may be…

  15. Teaching Portfolio

    DEFF Research Database (Denmark)

    Pedersen, Christian Fischer

    The present teaching portfolio has been submitted for evaluation in partial fulfillment of the requirements of the teacher training programme for Assistant Professors at Department of Engineering, Aarhus University, Denmark.......The present teaching portfolio has been submitted for evaluation in partial fulfillment of the requirements of the teacher training programme for Assistant Professors at Department of Engineering, Aarhus University, Denmark....

  16. Exploring Vietnam: A Multiple Intelligence Portfolio of Learning.

    Science.gov (United States)

    Hoover, Linda A.; Taylor, Randall

    1998-01-01

    Provides guidelines for implementing portfolios in the social studies classroom that focus on the Vietnam era and incorporate Howard Gardner's multiple intelligences. Outlines the portfolio project, lists eleven portfolio components, and addresses the intelligence of each. (CMK)

  17. Portfolios in Saudi medical colleges

    Science.gov (United States)

    Fida, Nadia M.; Shamim, Muhammad S.

    2016-01-01

    Over recent decades, the use of portfolios in medical education has evolved, and is being applied in undergraduate and postgraduate programs worldwide. Portfolios, as a learning process and method of documenting and assessing learning, is supported as a valuable tool by adult learning theories that stress the need for learners to be self-directed and to engage in experiential learning. Thoughtfully implemented, a portfolio provides learning experiences unequaled by any single learning tool. The credibility (validity) and dependability (reliability) of assessment through portfolios have been questioned owing to its subjective nature; however, methods to safeguard these features have been described in the literature. This paper discusses some of this literature, with particular attention to the role of portfolios in relation to self-reflective learning, provides an overview of current use of portfolios in undergraduate medical education in Saudi Arabia, and proposes research-based guidelines for its implementation and other similar contexts. PMID:26905344

  18. Portfolio Management

    Science.gov (United States)

    Duncan, Sharon L.

    2011-01-01

    Enterprise Business Information Services Division (EBIS) supports the Laboratory and its functions through the implementation and support of business information systems on behalf of its business community. EBIS Five Strategic Focus Areas: (1) Improve project estimating, planning and delivery capability (2) Improve maintainability and sustainability of EBIS Application Portfolio (3) Leap forward in IT Leadership (4) Comprehensive Talent Management (5) Continuous IT Security Program. Portfolio Management is a strategy in which software applications are managed as assets

  19. Play

    Science.gov (United States)

    Harteveld, Casper

    Designing a game with a serious purpose involves considering the worlds of Reality and Meaning yet it is undeniably impossible to create a game without a third world, one that is specifically concerned with what makes a game a game: the play elements. This third world, the world of people like designers and artists, and disciplines as computer science and game design, I call the world of Play and this level is devoted to it. The level starts off with some of the misperceptions people have of play. Unlike some may think, we play all the time, even when we grow old—this was also very noticeable in designing the game Levee Patroller as the team exhibited very playful behavior at many occasions. From there, I go into the aspects that characterize this world. The first concerns the goal of the game. This relates to the objectives people have to achieve within the game. This is constituted by the second aspect: the gameplay. Taking actions and facing challenges is subsequently constituted by a gameworld, which concerns the third aspect. And all of it is not possible without the fourth and final aspect, the type of technology that creates and facilitates the game. The four aspects together make up a “game concept” and from this world such a concept can be judged on the basis of three closely interrelated criteria: engagement, immersion, and fun.

  20. Do portfolios have a future?

    Science.gov (United States)

    Driessen, Erik

    2017-03-01

    While portfolios have seen an unprecedented surge in popularity, they have also become the subject of controversy: learners often perceive little gain from writing reflections as part of their portfolios; scholars question the ethics of such obligatory reflection; and students, residents, teachers and scholars alike condemn the bureaucracy surrounding portfolio implementation in competency-based education. It could be argued that mass adoption without careful attention to purpose and format may well jeopardize portfolios' viability in health sciences education. This paper explores this proposition by addressing the following three main questions: (1) Why do portfolios meet with such resistance from students and teachers, while educators love them?; (2) Is it ethical to require students to reflect and then grade their reflections?; (3) Does competency-based education empower or hamper the learner during workplace-based learning? Twenty-five years of portfolio reveal a clear story: without mentoring, portfolios have no future and are nothing short of bureaucratic hurdles in our competency-based education programs. Moreover, comprehensive portfolios, which are integrated into the curriculum and much more diverse in content than reflective portfolios, can serve as meaningful patient charts, providing doctor and patient with useful information to discuss well-being and treatment. In this sense, portfolios are also learner charts that comprehensively document progress in a learning trajectory which is lubricated by meaningful dialogue between learner and mentor in a trusting relationship to foster learning. If we are able to make such comprehensive and meaningful use of portfolios, then, yes, portfolios do have a bright future in medical education.

  1. The Portfolio as Metaphor for Teacher Reflection.

    Science.gov (United States)

    Wenzlaff, Terri L.; Cummings, Katherine E.

    1996-01-01

    One university incorporated preparation of teaching portfolios into preservice teacher education, providing a link between the portfolio assignment and the development of students' abilities to reflect on their teaching. The paper notes students' reactions to the assignment, explaining how teaching portfolios can become the first stage in…

  2. Troubleshooting Portfolios

    Science.gov (United States)

    Crismond, David; Peterie, Matthew

    2017-01-01

    The Troubleshooting Portfolios approach was developed at the Olathe Northwest High School in Olathe, Kansas. This approach supports integrated STEM and "informed design" thinking and learning, in which students: (1) use design strategies effectively; (2) work creatively and collaboratively in teams; (3) make knowledge-driven decisions;…

  3. Agile Project Portfolio Management

    DEFF Research Database (Denmark)

    Andersen, Jesper Rank; Riis, Jens Ove; Mikkelsen, Hans

    2005-01-01

    in the managerial hierarchy. They compete for resources and managerial attention, and they often take too long time - and some do not survive in the rapid changing context. Top man¬agers ask for speed, flexibility and effectiveness in the portfolio of development activities (projects). But which competencies......This paper will provide a preliminary introduction to the application of Agile Thinking in management of project portfolio and company development. At any point in time, companies have a crowd of development initiatives spread around the organisation and managed at different levels...

  4. PSN: Portfolio Social Network

    DEFF Research Database (Denmark)

    Cortes, Jordi Magrina; Nizamani, Sarwat; Memon, Nasrullah

    2014-01-01

    In this paper we present a web-based information system which is a portfolio social network (PSN) that provides solutions to the recruiters and job seekers. The proposed system enables users to create portfolio so that he/she can add his specializations with piece of code if any specifically...... for software engineers, that is online accessible. The unique feature of the system is to facilitate the recruiters to quickly view the prominent skills of the users. A comparative analysis of the proposed system with the state of the art systems is presented. The comparative study reveals that the proposed...

  5. Children's Play: An Introduction for Care Providers. Addison-Wesley Early Childhood Education.

    Science.gov (United States)

    Mulligan, Vicki

    Intended as an aid for students on their way to becoming professional teachers and caregivers, This book encourages the student to contemplate his or her own ideas regarding play, including the concept of play and specific memories of play in their own past, and then use these thoughts to reshape the student's ideas about play. This book deals…

  6. Electronic Portfolios for Scientists

    OpenAIRE

    Dahn, I.; Christmann, A

    2007-01-01

    Electronic portfolios (ePortfolios) are electronic versions of paper based portfolios. They are increasingly applied in education. Software for building and maintaining ePortfolios is emerging; open specifications for the exchange of ePortfolios exist. They show the potential to serve as a standard tool for documenting achievements in lifelong learning. In this paper we explore the potential of ePortfolios for scientists.

  7. Learning Portfolio as a Service--A Restful Style

    Science.gov (United States)

    Hu, Shueh-Cheng; Chen, I-Ching; Lin, Yaw-Ling

    2013-01-01

    Learning portfolios play a critical role in fostering learning and assessing learning achievement. For easy access and more efficient processing, various electronic portfolio systems have being developed and receiving widespread adoption. Contemporary electronic portfolio systems are designed and developed proprietarily, such that the limited…

  8. PLAY ANALYSIS AND DIGITAL PORTFOLIO OF MAJOR OIL RESERVOIRS IN THE PERMIAN BASIN: APPLICATION AND TRANSFER OF ADVANCED GEOLOGICAL AND ENGINEERING TECHNOLOGIES FOR INCREMENTAL PRODUCTION OPPORTUNITIES

    Energy Technology Data Exchange (ETDEWEB)

    Shirley P. Dutton; Eugene M. Kim; Ronald F. Broadhead; Caroline L. Breton; William D. Raatz; Stephen C. Ruppel; Charles Kerans

    2004-05-01

    The Permian Basin of west Texas and southeast New Mexico has produced >30 Bbbl (4.77 x 10{sup 9} m{sup 3}) of oil through 2000, most of it from 1,339 reservoirs having individual cumulative production >1 MMbbl (1.59 x 10{sup 5} m{sup 3}). These significant-sized reservoirs are the focus of this report. Thirty-two Permian Basin oil plays were defined, and each of the 1,339 significant-sized reservoirs was assigned to a play. The reservoirs were mapped and compiled in a Geographic Information System (GIS) by play. Associated reservoir information within linked data tables includes Railroad Commission of Texas reservoir number and district (Texas only), official field and reservoir name, year reservoir was discovered, depth to top of the reservoir, production in 2000, and cumulative production through 2000. Some tables also list subplays. Play boundaries were drawn for each play; the boundaries include areas where fields in that play occur but are <1 MMbbl (1.59 x 10{sup 5} m{sup 3}) of cumulative production. This report contains a summary description of each play, including key reservoir characteristics and successful reservoir-management practices that have been used in the play. The CD accompanying the report contains a pdf version of the report, the GIS project, pdf maps of all plays, and digital data files. Oil production from the reservoirs in the Permian Basin having cumulative production >1 MMbbl (1.59 x 10{sup 5} m{sup 3}) was 301.4 MMbbl (4.79 x 10{sup 7} m{sup 3}) in 2000. Cumulative Permian Basin production through 2000 from these significant-sized reservoirs was 28.9 Bbbl (4.59 x 10{sup 9} m{sup 3}). The top four plays in cumulative production are the Northwest Shelf San Andres Platform Carbonate play (3.97 Bbbl [6.31 x 10{sup 8} m{sup 3}]), the Leonard Restricted Platform Carbonate play (3.30 Bbbl 5.25 x 10{sup 8} m{sup 3}), the Pennsylvanian and Lower Permian Horseshoe Atoll Carbonate play (2.70 Bbbl [4.29 x 10{sup 8} m{sup 3}]), and the San Andres

  9. Aligning the use of portfolios with digital badging.

    Science.gov (United States)

    Doherty, Iain; Sharma, Neel

    2015-10-01

    While the place of portfolios in medical training is established, there are limits to their use. This article discusses the potential use of digital badges to complement portfolios, as these provide a transparent overview of a learner's level of competence.

  10. Performance of salmon fishery portfolios across western North America.

    Science.gov (United States)

    Griffiths, Jennifer R; Schindler, Daniel E; Armstrong, Jonathan B; Scheuerell, Mark D; Whited, Diane C; Clark, Robert A; Hilborn, Ray; Holt, Carrie A; Lindley, Steven T; Stanford, Jack A; Volk, Eric C

    2014-12-01

    Quantifying the variability in the delivery of ecosystem services across the landscape can be used to set appropriate management targets, evaluate resilience and target conservation efforts. Ecosystem functions and services may exhibit portfolio-type dynamics, whereby diversity within lower levels promotes stability at more aggregated levels. Portfolio theory provides a framework to characterize the relative performance among ecosystems and the processes that drive differences in performance. We assessed Pacific salmon Oncorhynchus spp. portfolio performance across their native latitudinal range focusing on the reliability of salmon returns as a metric with which to assess the function of salmon ecosystems and their services to humans. We used the Sharpe ratio (e.g. the size of the total salmon return to the portfolio relative to its variability (risk)) to evaluate the performance of Chinook and sockeye salmon portfolios across the west coast of North America. We evaluated the effects on portfolio performance from the variance of and covariance among salmon returns within each portfolio, and the association between portfolio performance and watershed attributes. We found a positive latitudinal trend in the risk-adjusted performance of Chinook and sockeye salmon portfolios that also correlated negatively with anthropogenic impact on watersheds (e.g. dams and land-use change). High-latitude Chinook salmon portfolios were on average 2·5 times more reliable, and their portfolio risk was mainly due to low variance in the individual assets. Sockeye salmon portfolios were also more reliable at higher latitudes, but sources of risk varied among the highest performing portfolios. Synthesis and applications. Portfolio theory provides a straightforward method for characterizing the resilience of salmon ecosystems and their services. Natural variability in portfolio performance among undeveloped watersheds provides a benchmark for restoration efforts. Locally and regionally

  11. "Children's Play: An Introduction for Care Providers" by Vicki Mulligan. [Book Review].

    Science.gov (United States)

    LeMare, Lucy

    1997-01-01

    Notes the limited usefulness of Mulligan's book for student care-providers; its strengths lie in usability for students and instructors; its encouragement of care providers to be reflective, responsive professionals; and in the scope of topics discussed. Examines each book chapter in terms of usefulness for assisting care providers in assuming…

  12. Evaluation of an established learning portfolio.

    Science.gov (United States)

    Vance, Gillian; Williamson, Alyson; Frearson, Richard; O'Connor, Nicole; Davison, John; Steele, Craig; Burford, Bryan

    2013-02-01

    The trainee-held learning portfolio is integral to the foundation programme in the UK. In the Northern Deanery, portfolio assessment is standardised through the Annual Review of Competence Progression (ARCP) process. In this study we aimed to establish how current trainees evaluate portfolio-based learning and ARCP, and how these attitudes may have changed since the foundation programme was first introduced. Deanery-wide trainee attitudes were surveyed by an electronic questionnaire in 2009 and compared with perceptions recorded during the pilot phase (2004-2005).  Many trainees continue to view the e-portfolio negatively. Indeed, significantly fewer trainees in 2009 thought that the e-portfolio was a 'good idea' or a 'worthwhile investment of time' than in 2005. Trainees remain unconvinced about the educational value of the e-portfolio: fewer trainees in 2009 regarded it as a tool that might help focus on training or recognise individual strengths and weaknesses. Issues around unnecessary bureaucracy persist. Current trainees tend to understand how to use the e-portfolio, but many did not know how much, or what evidence to collect. Few supervisors were reported to provide useful guidance on the portfolio. ARCP encouraged portfolio completion but did not give meaningful feedback to drive future learning.   Continued support is needed for both trainees and supervisors in portfolio-building skills and in using the e-portfolio as an educational tool. Trainee-tailored feedback is needed to ensure that portfolio-based assessment promotes lifelong, self-directed and reflective learners. © Blackwell Publishing Ltd 2013.

  13. Portfolios: possibilities for addressing emergency medicine resident competencies.

    Science.gov (United States)

    O'Sullivan, Patricia; Greene, Constance

    2002-11-01

    Portfolios are an innovative approach to evaluate the competency of emergency medicine residents. Three key characteristics add to their attractiveness. First, portfolios draw from the resident's actual work. Second, they require self-reflection on the part of the resident. Third, they are inherently practice-based learning since residents must review and consider their practice in order to begin the portfolio. This paper illustrates five different applications of portfolios. First, portfolios are applied to evaluating specific competencies as part of the training of emergency physicians. While evaluating specific competencies, the portfolio captures aspects of the general competencies. Second, the article illustrates using portfolios as a way to address a specific residency review committee (RRC) requirement such as follow-ups. Third is a description of how portfolios can be used to evaluate resident conferences capturing the competency of practice-based learning and possibly other competencies such as medical knowledge and patient care. Fourth, the authors of the article designed a portfolio as a way to demonstrate clinical competence. Fifth, they elaborate as to how a continuous quality improvement project could be cast within the portfolio framework. They provide some guidance concerning issues to address when designing the portfolios. Portfolios are carefully structured and not haphazard collections of materials. Following criteria is important in maintaining the validity of the portfolio as well as contributing to reliability. The portfolios can enhance the relationship between faculty and residents since faculty will suggest cases, discuss anomalies, and interact with the residents around the portfolio. The authors believe that in general portfolios can cover many of the general competencies specified by the ACGME while still focusing on issues important to emergency medicine. The authors believe that portfolios provide an approach to evaluation commensurate

  14. What Role Can School Health Providers Play in Health Care Reform?

    Science.gov (United States)

    Fleming, Robin

    2009-01-01

    President Barack Obama is wasting no time in unfolding his plan to provide health coverage for all Americans. He started in February by signing legislation to reinstate the State Children's Health Insurance Program, which expands eligibility criteria to provide 4 million more children access to health care. This first step is one of many needed to…

  15. Project Portfolio Management Software

    OpenAIRE

    Paul POCATILU

    2006-01-01

    In order to design a methodology for the development of project portfolio management (PPM) applications, the existing applications have to be studied. This paper describes the main characteristics of the leading project portfolio management software applications.

  16. Situating Portfolios: Four Perspectives

    OpenAIRE

    Yancey, Kathleen Blake; Weiser, Irwin

    1997-01-01

    Yancey and Weiser bring together thirty-one writing teachers from diverse levels of instruction, institutional settings, and regions to create a stimulating volume on the current practice in portfolio writing assessment. Contributors reflect on the explosion in portfolio practice over the last decade, why it happened, what comes next; discuss portfolios in hypertext, the web, and other electronic spaces; and consider emerging trends and issues that are involving portfolios in teacher assessme...

  17. Building a professional portfolio.

    OpenAIRE

    Arhippainen, Mikko

    2016-01-01

    Building a professional portfolio is a thesis report with buiding a professional portfolio for the author with a background in graphic design and event management with main interest on aesthetics side. This report describes the main process of selecting materials, planning and actually producing the portfolio. In addition to the portfolio there is a chapter with inspection on LinkedIn and other social medias when planning for jobsearch. Altogether it is many channels and a combination of ...

  18. The Current Account as A Dynamic Portfolio Choice Problem

    OpenAIRE

    Didier, Tatiana; Lowenkron, Alexandre

    2009-01-01

    The current account can be understood as the outcome of investment decisions made by domestic and foreign investors. These decisions can be decomposed into a portfolio rebalancing and a portfolio growth component. This paper provides empirical evidence of the importance of portfolio rebalancing for the dynamics of the current account. The authors evaluate the predictions of a partial-equil...

  19. Effectiveness of Video Modeling Provided by Mothers in Teaching Play Skills to Children with Autism

    Science.gov (United States)

    Besler, Fatma; Kurt, Onur

    2016-01-01

    Video modeling is an evidence-based practice that can be used to provide instruction to individuals with autism. Studies show that this instructional practice is effective in teaching many types of skills such as self-help skills, social skills, and academic skills. However, in previous studies, videos used in the video modeling process were…

  20. Implementing portfolio in postgraduate general practice training. Benefits and recommendations.

    Science.gov (United States)

    Alotaibi, Fawaz S

    2012-10-01

    This paper presents a review to explore the literature focusing on portfolio in postgraduate general practice (GP) training, and to examine the impact of implementation of portfolio on learning process, as well as proposing recommendations for its implementation in postgraduate GP training. An electronic search was carried out on several databases for studies addressing portfolio in postgraduate GP training. Six articles were included to address specifically the effectiveness of portfolio in postgraduate GP training. Five of them described successful experiences of portfolio-based learning implementation. Only one article addressed portfolio-based assessment in postgraduate GP training. The existing evidence provides various benefits of professional portfolio-based learning. It does appear to have advantages of stimulating reflective learning, promoting proactive learning, and bridging the hospital experiences of the learners to GP. Moreover, the challenges to implementation of portfolio-based learning are often based on orientation and training of stakeholders.

  1. Possibility theory for multiobjective fuzzy random portfolio optimization

    Directory of Open Access Journals (Sweden)

    Mir Ehsan Hesam Sadati

    2014-06-01

    Full Text Available The problem of portfolio optimization is a standard problem in financial world and it has received tremendous attentions. Portfolio optimization plays essential role in determining portfolio strategies for investors. Portfolio optimization is intrinsically a discrete optimization problem whose decision criteria are in conflict and the proposed study of this paper considers a portfolio optimization problem involving fuzzy random variables. To solve the proposed model, we first present the possibility and necessity-based model to reformulate the fuzzy random portfolio selection model into linear programming models and using the resulted linear programs, a multi-objective problem is constructed. To solve the multi-objective problem we propose some methods to consider decision makers’ optimistic and pessimistic views. A numerical example illustrates the whole idea on multiobjective fuzzy random portfolio optimization by possibility and necessity-based model.

  2. Comprehensive Education Portfolio with a Career Focus

    Science.gov (United States)

    Kruger, Evonne J.; Holtzman, Diane M.; Dagavarian, Debra A.

    2013-01-01

    There are many types of student portfolios used within academia: the prior learning portfolio, credentialing portfolio, developmental portfolio, capstone portfolio, individual course portfolio, and the comprehensive education portfolio. The comprehensive education portfolio (CEP), as used by the authors, is a student portfolio, developed over…

  3. Effective Implementation of ePortfolios: The Development of ePortfolios to Support Online Learning

    Science.gov (United States)

    Cote, Kyle; Emmett, Tara

    2015-01-01

    This article discusses the ePortfolio system for grades 9-12 at the Virtual Learning Academy Charter School (VLACS). ePortfolio implementation at VLACS developed from an Advisory course curriculum that supports students' journey toward becoming college, career, and citizenship ready. We provide a unique perspective for implementation in that VLACS…

  4. PRODUCT PORTFOLIO ANALYSIS - ARTHUR D. LITTLE MATRIX

    Directory of Open Access Journals (Sweden)

    Curmei Catalin Valeriu

    2011-07-01

    Full Text Available In recent decades we have witnessed an unseen dynamism among companies, which is explained by their desire to engage in more activities that provide a high level of development and diversification. Thus, as companies are diversifying more and more, their managers confront a number of challenges arising from the management of resources for the product portfolio and the low level of resources with which companies can identify, at a time. Responding to these challenges, over time were developed a series of analytical product portfolio methods through which managers can balance the sources of cash flows from the multiple products and also can identify the place and role of products, in strategic terms, within the product portfolio. In order to identify these methods the authors of the present paper have conducted a desk research in order to analyze the strategic marketing and management literature of the last 2 decades. Widely were studied a series of methods that are presented in the marketing and management literature as the main instruments used within the product portfolio strategic planning process. Among these methods we focused on the Arthur D. Little matrix. Thus the present paper has the purpose to outline the characteristics and strategic implications of the ADL matrix within a company’s product portfolio. After conducting this analysis we have found that restricting the product portfolio analysis to the A.D.L. matrix is not a very wise decision. The A.D.L. matrix among with other marketing tools of product portfolio analysis have some advantages and disadvantages and is trying to provide, at a time, a specific diagnosis of a company’s product portfolio. Therefore, the recommendation for the Romanian managers consists in a combined use of a wide range of tools and techniques for product portfolio analysis. This leads to a better understanding of the whole mix of product markets, included in portfolio analysis, the strategic position

  5. E-portfolios for the aspiring professional.

    Science.gov (United States)

    Andre, Kate

    2010-01-01

    The introduction of the ANMC's Continuing Competence Framework means that an increasing number of Australian Registered Nurses and Registered Midwives will be required to submit a portfolio if audited in order to maintain their registration. As several professional organisations and State regulatory authorities have already demonstrated, nurses and midwives will be supported to do this. However there is a risk that individuals commencing a portfolio for the first time will attempt to deal with the requirement by focussing on the minimum standards set by the regulatory authorities. Critics of the use of professional portfolios are quite correct, compiling and managing a portfolio can be a time consuming and irrelevant process if not well implemented. As this article will elaborate, e-Portfolios have a range of potential professional benefits including supporting individuals through a critical reflective approach to competency development, supporting professional collaboration and providing a structure for planning their career progression. This article provides an overview of the potential benefits of e-Portfolio platforms including detailing the capacities for information storage and recall and the provision of tools to support structuring and reporting information to further develop and communicate professional achievements. The objective is to entice the ambitious professional and their employers/professional associations to consider utilizing the extended capacities of e-Portfolios.

  6. Building your portfolio the CILIP guide

    CERN Document Server

    Watson, Margaret

    2012-01-01

    This 'how to' guide provides practical and clear advice on producing a successful portfolio for the professional qualifications offered by CILIP: the Chartered Institute of Library and Information Professionals.

  7. Robust Portfolio Optimization Using Pseudodistances

    Science.gov (United States)

    2015-01-01

    The presence of outliers in financial asset returns is a frequently occurring phenomenon which may lead to unreliable mean-variance optimized portfolios. This fact is due to the unbounded influence that outliers can have on the mean returns and covariance estimators that are inputs in the optimization procedure. In this paper we present robust estimators of mean and covariance matrix obtained by minimizing an empirical version of a pseudodistance between the assumed model and the true model underlying the data. We prove and discuss theoretical properties of these estimators, such as affine equivariance, B-robustness, asymptotic normality and asymptotic relative efficiency. These estimators can be easily used in place of the classical estimators, thereby providing robust optimized portfolios. A Monte Carlo simulation study and applications to real data show the advantages of the proposed approach. We study both in-sample and out-of-sample performance of the proposed robust portfolios comparing them with some other portfolios known in literature. PMID:26468948

  8. Deaf college students' perspectives on literacy portfolios.

    Science.gov (United States)

    Nickerson, Jane Freiburg

    2003-01-01

    The study examined how literacy portfolios were used as tools in a college developmental English class in which deaf students assessed their reading comprehension as well as their writing processes and products. The students' reading and writing assignments involved reflective thinking and were grounded in authentic tasks. Immediate feedback was provided. The study was multidimensional, longitudinal, and ongoing. A variety of field research techniques were used to ascertain the uses and influences of portfolios in regard to students' reading, writing, and reflective thinking. The results support the idea that the use of literacy portfolios can positively influence students who are deaf when they assess their reading and writing abilities.

  9. Evaluation of pharmacist continuing professional development portfolios.

    Science.gov (United States)

    Tofade, Toyin S; Hedrick, John N; Dedrick, Stephen C; Caiola, Stephen M

    2013-06-01

    The purpose of this study was to conduct a random continuing professional development (CPD) portfolio audit to assess the portfolios of pharmacists who completed CPD training in the state of North Carolina and reported adopting it in place of the annual 15-hour continuing education (CE) requirement when applying for re-licensure. The NC Board of Pharmacy (NCBOP) staff randomly selected 30 pharmacists to provide CPD portfolio documentation to the Board electronically or in paper format. This documentation included their completed learning plan, a learning activity worksheet for each completed activity, and the Accreditation Council on Pharmacy Education (ACPE) universal activity number for the CPD training program attended. The Task Force used a multicomponent audit tool to assess each portfolio. Eighty percent of portfolios had at least 15 hours of learning reported. Portfolio assessments indicated an average of 5 learning objectives per individual. Based on the scale of 1 to 5, the Measurable and Specific sections of the objectives scored the lowest with an average score of 3 on both sections. An overall assessment of "adequate" or "comprehensive" was noted for 60% of the portfolios. Pharmacists completing CPD training are capable of following the CPD process with some potential challenges in documentation. Information submitted to the board of pharmacy is considered sufficient for license renewal purposes.

  10. Portfolios for New (and Experienced) Teachers of Writing.

    Science.gov (United States)

    Gorrell, Donna

    The portfolio approach to teaching writing brings the writing process into the classroom and enables the new teacher--and all teachers--to see writing from a new perspective, to truly be collaborators and coaches with their students. A college writing teacher uses portfolios and plays the role of evaluator as well as the responder in three courses…

  11. Auteurism and the secondary agency of portfolios

    DEFF Research Database (Denmark)

    Strandvad, Sara Malou

    2015-01-01

    Based on an ethnographic study of evaluators' micro-practices during the admission test at a prominent Danish design school, this paper looks into the decisions made by evaluators when selecting future students.Two rounds make up the test in question: A first round where evaluators review...... to identify relations made between evaluators and candidates along with portfolios and conventions which they refer to. That is, rather than seeing the test as a social game played solely by evaluators and applicants, the art nexus calls attention also to the roles played by portfolios and aesthetic...

  12. IT Portfolio Management

    DEFF Research Database (Denmark)

    Hansen, Lars Kristian; Kræmmergaard, Pernille

    2012-01-01

    information about internal recourses, (4) Lack of operational goals to hold IT projects accountable, (5) No account of actual IT project costs. These results may be used to inform further research into IT PPM and to help managers improve IT PPM practices in public organizations in their effort of increase......As public organizations increasingly rely on IT-enabled development to provide faster cycle times and better services, IT Project Portfolio Management (IT PPM) has become a high priority issue. This research adopts engaged scholarship to investigate IT PPM practices within a large local government...... on the theory’s distinction between different modes of control five problems in control is identified: (1) weak accountability processes between the political and the administrative level, (2) weak accountability processes between director level and the IT executives, (3) IT projects established on incomplete...

  13. IT Portfolio Management

    DEFF Research Database (Denmark)

    Hansen, Lars Kristian; Kræmmergaard, Pernille

    2012-01-01

    As public organizations increasingly rely on IT-enabled development to provide faster cycle times and better services, IT Project Portfolio Management (IT PPM) has become a high priority issue. This research adopts engaged scholarship to investigate IT PPM practices within a large local government...... on the theory’s distinction between different modes of control five problems in control is identified: (1) weak accountability processes between the political and the administrative level, (2) weak accountability processes between director level and the IT executives, (3) IT projects established on incomplete...... information about internal recourses, (4) Lack of operational goals to hold IT projects accountable, (5) No account of actual IT project costs. These results may be used to inform further research into IT PPM and to help managers improve IT PPM practices in public organizations in their effort of increase...

  14. Using Electronic Portfolios

    Science.gov (United States)

    Page, Deb

    2012-01-01

    The digitized collections of artifacts known as electronic portfolios are creating solutions to a variety of performance improvement needs in ways that are cost-effective and improve both individual and group learning and performance. When social media functionality is embedded in e-portfolios, the tools support collaboration, social learning,…

  15. The thermodynamics of portfolios

    OpenAIRE

    Piotrowski, Edward W.; Jan Sladkowski

    2000-01-01

    We propose a new method of valuation of portfolios and their respective investing strategies. To this end we define a canonical ensemble of portfolios that allows to use the formalism of thermodynamics. (final version published in Acta Phys.Pol.B,32(2001)597-604)

  16. The standard for portfolio management

    CERN Document Server

    2017-01-01

    The Standard for Portfolio Management – Fourth Edition has been updated to best reflect the current state of portfolio management. It describe the principles that drive accepted good portfolio management practices in today’s organizations. It also expands the description of portfolio management to reflect its relation to organizational project management and the organization.

  17. Portfolios in Saudi medical colleges. Why and how?

    Science.gov (United States)

    Fida, Nadia M; Shamim, Muhammad S

    2016-03-01

    Over recent decades, the use of portfolios in medical education has evolved, and is being applied in undergraduate and postgraduate programs worldwide. Portfolios, as a learning process and method of documenting and assessing learning, is supported as a valuable tool by adult learning theories that stress the need for learners to be self-directed and to engage in experiential learning. Thoughtfully implemented, a portfolio provides learning experiences unequaled by any single learning tool. The credibility (validity) and dependability (reliability) of assessment through portfolios have been questioned owing to its subjective nature; however, methods to safeguard these features have been described in the literature. This paper discusses some of this literature, with particular attention to the role of portfolios in relation to self-reflective learning, provides an overview of current use of portfolios in undergraduate medical education in Saudi Arabia, and proposes research-based guidelines for its implementation and other similar contexts.

  18. Agents of change: how do complementary and alternative medicine providers play a role in health behavior change?

    Science.gov (United States)

    Williams-Piehota, Pamela A; Sirois, Fuschia M; Bann, Carla M; Isenberg, Karen B; Walsh, Edith G

    2011-01-01

    Recent investigations indicate that complementary and alternative medicine (CAM) use may be conducive to health behavior change. The goal of this study was to investigate how this change occurs. Using Social Cognitive Theory and Self-determination Theory as guiding frameworks, we surveyed a convenience sample of 216 CAM consumers abouttheir CAM therapy and iors and conducted focus groups with 36 CAM consumers. Consumers reported encouragement from providers and improved energy resulting from treatments as reasons for making health behavior changes. Multivariate analysis showed that increased odds of self-reported dietary change were significantly associated with increasing body awareness as a result of therapy, endorsing the statement that sustained improvement for their health conditions required self-care, using an acupuncturist, and being 44 years or younger. Comparable results were found for exercise change, except using an acupuncturist was a significant negative predictor and age was not significant. Focus group findings echoed these themes. This initial investigation into how CAM providers may play a role in health behavior change suggests that provider support, increased responsibility for one's health, and the CAM treatments themselves contribute to behavior change, although additional research in this area is warranted.

  19. Portfolio Management System

    Data.gov (United States)

    US Agency for International Development — PfMS is an implementation of WorkLenz. WorkLenz is USAID's portfolio management system tool. It is a commercially available, off-the-shelf (COTS) package that...

  20. Alternatives: the right medicine for your portfolio?

    Science.gov (United States)

    Doody, Dennis

    2006-01-01

    Because they often play an active role in developing their portfolio companies' strategies, private capital investment managers can add significant value to companies in their portfolio. The relative inefficiency of private capital markets can give savvy investors an edge that they can not so easily gain in the more efficient public markets. Originally created as a means to reduce volatility, hedge funds should not be seen as the high-risk bets that they are widely perceived to be. Most hedge funds actually are concerned with protecting downside risk.

  1. Introducing E-portfolio Use to Primary School Pupils: Response, Benefits and Challenges

    National Research Council Canada - National Science Library

    Dimitra Theodosiadou; Angelos Konstantinidis

    2015-01-01

    .... This study aims to investigate the impact of e-portfolios on learning in a Greek primary school and to provide a resource regarding the educational benefits of e-portfolio in primary education...

  2. Use of Portfolios by Medical Students: Significance of Critical Thinking

    Directory of Open Access Journals (Sweden)

    Samy A. Azer

    2008-07-01

    Full Text Available Portfolios have been used in the medical curriculum to evaluate difficult-to-assess areas such as students' attitudes, professionalism and teamwork. However, their use early in a problem-based learning (PBL course to foster deep learning and enhance students' self-directed learning has not been adequately studied. The aims of this paper are to: (1 understand the uses of portfolios and the rationale for using reflection in the early years of a PBL curriculum; (2 discuss how to introduce portfolios and encourage students' critical thinking skills, not just reflection; and (3 provide students with tips that could enhance their skills in constructing good portfolios.

  3. Use of portfolios by medical students: significance of critical thinking.

    Science.gov (United States)

    Azer, Samy A

    2008-07-01

    Portfolios have been used in the medical curriculum to evaluate difficult-to-assess areas such as students' attitudes, professionalism and teamwork. However, their use early in a problem-based learning (PBL) course to foster deep learning and enhance students' self-directed learning has not been adequately studied. The aims of this paper are to: (1) understand the uses of portfolios and the rationale for using reflection in the early years of a PBL curriculum; (2) discuss how to introduce portfolios and encourage students' critical thinking skills, not just reflection; and (3) provide students with tips that could enhance their skills in constructing good portfolios.

  4. Simple and enlarged separation portfolios: On their use when arbitraging and synthesizing securities

    OpenAIRE

    Apreda, Rodolfo

    2003-01-01

    This paper seeks to provide a framework for separation portfolios when they are used not only as synthetics of a matching security but also as building blocks of arbitrage portfolios, in a background provided by the CAPM world. Firstly, synthetics are defined by means of a vectorial framework that maps portfolios onto their risk-return profiles. Separation portfolios are extensively analyzed afterwards, establishing three propositions that lay the groundwork for using them as synthetics. Next...

  5. Making practice transparent through e-portfolio.

    Science.gov (United States)

    Stewart, Sarah M

    2013-12-01

    Midwives are required to maintain a professional portfolio as part of their statutory requirements. Some midwives are using open social networking tools and processes to develop an e-portfolio. However, confidentiality of patient and client data and professional reputation have to be taken into consideration when using online public spaces for reflection. There is little evidence about how midwives use social networking tools for ongoing learning. It is uncertain how reflecting in an e-portfolio with an audience impacts on learning outcomes. This paper investigates ways in which reflective midwifery practice be carried out using e-portfolio in open, social networking platforms using collaborative processes. Using an auto-ethnographic approach I explored my e-portfolio and selected posts that had attracted six or more comments. I used thematic analysis to identify themes within the textual conversations in the posts and responses posted by readers. The analysis identified that my collaborative e-portfolio had four themes: to provide commentary and discuss issues; to reflect and process learning; to seek advice, brainstorm and process ideas for practice, projects and research, and provide evidence of professional development. E-portfolio using open social networking tools and processes is a viable option for midwives because it facilitates collaborative reflection and shared learning. However, my experience shows that concerns about what people think, and client confidentiality does impact on the nature of open reflection and learning outcomes. I conclude this paper with a framework for managing midwifery statutory obligations using online public spaces and social networking tools. Copyright © 2013 Australian College of Midwives. Published by Elsevier Ltd. All rights reserved.

  6. Risks of Large Portfolios.

    Science.gov (United States)

    Fan, Jianqing; Liao, Yuan; Shi, Xiaofeng

    2015-06-01

    The risk of a large portfolio is often estimated by substituting a good estimator of the volatility matrix. However, the accuracy of such a risk estimator is largely unknown. We study factor-based risk estimators under a large amount of assets, and introduce a high-confidence level upper bound (H-CLUB) to assess the estimation. The H-CLUB is constructed using the confidence interval of risk estimators with either known or unknown factors. We derive the limiting distribution of the estimated risks in high dimensionality. We find that when the dimension is large, the factor-based risk estimators have the same asymptotic variance no matter whether the factors are known or not, which is slightly smaller than that of the sample covariance-based estimator. Numerically, H-CLUB outperforms the traditional crude bounds, and provides an insightful risk assessment. In addition, our simulated results quantify the relative error in the risk estimation, which is usually negligible using 3-month daily data.

  7. [The portfolios as a tool for learning and competency assessment in nursing students].

    Science.gov (United States)

    del Coro Canalejas-Pérez, M; Luisa Cid-Galán, M; Luisa Martínez-Martín, M; Martín-Salinas, Carmen

    2009-01-01

    To evaluate the utility of learning portfolios and to assess the generic and specific competencies of nursing students. To describe the advantages and difficulties of the use of portfolios. We performed a descriptive longitudinal study in the Nursing School of La Paz (Universidad Autónoma de Madrid) in the academic years 2004-05, 2005-06 and 2006-07, with the participation of 211 students enrolled in the medical-surgical nursing course. The variables studied were the specific competence of comprehensive patient evaluation and other generic competencies to be acquired by the students. These competencies were evaluated on three occasions: at the beginning of the course, during the course and at the end of the course. The advantages and disadvantages perceived by the students concerning the use of portfolios were analyzed at the end of the course. Data contained in the evaluation reports of the portfolios and student opinion questionnaires were collected and analyzed. During the academic course, the students showed progress in the acquisition of all the competencies, although they experienced greater difficulties in acquiring the competence of information management. The main advantage emphasized by nursing students was that portfolios provided a complete evaluation, since this method requires tutors to constantly monitor learning. Among the disadvantages, the students stressed the initial insecurity generated by the program and the effort required to follow it. Through the use of portfolios, students progressively developed a way of perceiving patients that aided their understanding of patients' health status. The students' previous notions on the roles played by teachers and students were also modified, with teachers being viewed more as a guide to learning.

  8. Preparedness Portfolios and Portfolio Studios: Supporting Self-Authoring Engineers

    Science.gov (United States)

    Sattler, Brook; Turns, Jennifer

    2015-01-01

    In this work, we engaged engineering undergraduate students in constructing an ePortfolio. The purpose of the research presented here was to explore the question, "If and in what ways do students report experiencing the construction of a preparedness portfolio in a portfolio studio as an opportunity to develop into self-authoring…

  9. A Guide to Writing Academic Portfolios for Radiologists.

    Science.gov (United States)

    Thomas, John V; Sanyal, Rupan; O'Malley, Janis P; Singh, Satinder P; Morgan, Desiree E; Canon, Cheri L

    2016-12-01

    The academic educator's portfolio is a collection of materials that document academic performance and achievements, supplementing the curriculum vitae, in order to showcase a faculty member's most significant accomplishments. A decade ago, a survey of medical schools revealed frustration in the nonuniform methods of measuring faculty's medical education productivity. A proposed solution was the use of an academic educator's portfolio. In the academic medical community, compiling an academic portfolio is always a challenge because teaching has never been confined to the traditional classroom setting and often involves active participation of the medical student, resident, or fellow in the ongoing care of the patient. Diagnostic radiology in addition requires a knowledge base that encompasses basic sciences, imaging physics, technology, and traditional and molecular medicine. Teaching and performing research that involves this complex mix, while providing patient care that is often behind the scenes, provides unique challenges in the documentation of teaching, research, and clinical service for diagnostic radiology faculty. An academic portfolio is seen as a way to explain why relevant academic activities are significant to promotions committee members who may have backgrounds in unrelated academic areas and may not be familiar with a faculty member's work. The academic portfolio consists of teaching, research, and service portfolios. The teaching portfolio is a collection of materials that document teaching performance and documents the educator's transition to a more effective educator. A research portfolio showcases the most significant research accomplishments. The service portfolio documents service responsibilities and highlight any service excellence. All portfolios should briefly discuss the educator's philosophy, activities, methods used to implement activities, leadership, mentoring, or committee roles in these respective areas. Recognizing that academic

  10. Portfolio Assessment for Better Evaluation.

    Science.gov (United States)

    Goolsby, Thomas W.

    1995-01-01

    Advocates using portfolio assessment in music education, more as a teaching tool than a final evaluative instrument. Explains those advantages and disadvantages of portfolio assessment that are peculiar to music education. Discusses materials for inclusion. (MJP)

  11. RISK MANAGEMENT OF INVESTMENT PORTFOLIO BY FUTURE

    Directory of Open Access Journals (Sweden)

    K. Kerimov Alexandr

    2017-01-01

    Full Text Available The article considers the problem of the dynamic risk management of the investment portfolio using future con- tracts. The management starts with the concept of effective inhomogeneous portfolios, which contain futures together with underlying asserts. The effective portfolios are defined as the ones of the minimal dispersion with the expected return greater or equal to the specified value. Risk is measured by the probability of losing of a certain part of the portfolio value. The control parameters are the number of futures for each asset of portfolio, which is defined from the condition of effec- tiveness of portfolio and risk acceptability on each step.The effective adaptive strategies of portfolio risk management together with comparative analysis on a concrete example are presented. The proposed approach provides the forecast correction of the expected income and its variance for the assets with the emergence of new data. The financial time series are determined by volatility clustering, i.e. relative or absolute price changes tend to keep high or low magnitude for some time, with the result that clusters are created - periods of high or low volatility. Then adaptive estimate of correlational relationships between asset prices are essential because the degree of correlational relationship also changes in time. So the correlation of future and spot price changes considerably increases while approaching to performance of contracts. For taking into account of data instability of dispersion and correlation simple methods of volatility forecasting and correlation of relative changes of price data based on exponential smoothing are implemented.

  12. Can a Metamorphosis Be Quantified?: Reflecting on Portfolio Assessment

    Science.gov (United States)

    Herberg, Erin

    2005-01-01

    This article outlines the experiences of a first-year writing program's adoption of large-scale portfolio assessment as part of its move from student-focused assessment to programmatic assessment. This research is an attempt to provide evidence to support the claims benefits associated with portfolio assessment and to chronicle the changes that…

  13. Portfolio Development for 21st Century School Counselors.

    Science.gov (United States)

    Boes, Susan R.; VanZile-Tamsen, Carol; Jackson, C. Marie

    2001-01-01

    Portfolios are an effective employment tool since they spotlight the developer's capabilities, personalize the interview, and reduce stress while capturing the interviewer's attention. An outline is provided of key components of a school counselor's portfolio beginning with a rationale and goals. Documentation of National Standards for School…

  14. An Example for Portfolio Preparation in German Teacher Training

    Science.gov (United States)

    Arak, Hüseyin

    2017-01-01

    In this study we are trying with the help of portfolio in teacher training and the diagnosis of the learning group concerning their skills in translation from German to Turkish, to show the documentation of the learning process. The portfolio provides a good overview about the performance of the students and it also prepares a basis for…

  15. Decentralized Portfolio Management

    Directory of Open Access Journals (Sweden)

    Benjamin Miranda Tabak

    2003-12-01

    Full Text Available We use a mean-variance model to analyze the problem of decentralized portfolio management. We find the solution for the optimal portfolio allocation for a head trader operating in n different markets, which is called the optimal centralized portfolio. However, as there are many traders specialized in different markets, the solution to the problem of optimal decentralized allocation should be different from the centralized case. In this paper we derive conditions for the solutions to be equivalent. We use multivariate normal returns and a negative exponential function to solve the problem analytically. We generate the equivalence of solutions by assuming that different traders face different interest rates for borrowing and lending. This interest rate is dependent on the ratio of the degrees of risk aversion of the trader and the head trader, on the excess return, and on the correlation between asset returns.

  16. Portfolio som undervisningsmedie

    DEFF Research Database (Denmark)

    Keiding, Tina Bering

    2009-01-01

    .   Portfolios baserer sig altovervejende på skrift-sproglig medieret kommunikation. Dette fokus på sprogligt medierede iagttagelser har uddannelsesmæssige og læringsmæssige implikationer, uanset om de tager form som mundtligt refleksivitet (fx i vejledningssituationer) eller skriftlig refleksivitet (fx i...... logbøger og portfolios). Viden er, hvad angår mennesker, ikke sproglig. I det øjeblik viden gives sproglig form - uanset om det er viden som forholdsvis let udtrykkes i sproglig form eller om det er viden som kun vanskeligt lader sig forme til sproglige udtryk - reduceres denne viden i forhold til dens......-intenderede konsekvenser, og at uddannelse og undervisning - modsat den etablerede portfolio-litteratur - må have blik for begge....

  17. Students' reflections in a portfolio pilot: highlighting professional issues.

    Science.gov (United States)

    Haffling, Ann-Christin; Beckman, Anders; Pahlmblad, Annika; Edgren, Gudrun

    2010-01-01

    Portfolios are highlighted as potential assessment tools for professional competence. Although students' self-reflections are considered to be central in the portfolio, the content of reflections in practice-based portfolios is seldom analysed. To investigate whether students' reflections include sufficient dimensions of professional competence, notwithstanding a standardized portfolio format, and to evaluate students' satisfaction with the portfolio. Thirty-five voluntary final-year medical students piloted a standardized portfolio in a general practice (GP) attachment at Lund University, Sweden. Students' portfolio reflections were based upon documentary evidence from practice, and aimed to demonstrate students' learning. The reflections were qualitatively analysed, using a framework approach. Students' evaluations of the portfolio were subjected to quantitative and qualitative analysis. Among professional issues, an integration of cognitive, affective and practical dimensions in clinical practice was provided by students' reflections. The findings suggested an emphasis on affective issues, particularly on self-awareness of feelings, attitudes and concerns. In addition, ethical problems, clinical reasoning strategies and future communication skills training were subjects of several reflective commentaries. Students' reflections on their consultation skills demonstrated their endeavour to achieve structure in the medical interview by negotiation of an agenda for the consultation, keeping the interview on track, and using internal summarizing. The importance of active listening and exploration of patient's perspective was also emphasized. In students' case summaries, illustrating characteristic attributes of GP, the dominating theme was 'patient-centred care', including the patient-doctor relationship, holistic modelling and longitudinal continuity. Students were satisfied with the portfolio, but improved instructions were needed. A standardized portfolio in a

  18. How Course Portfolios Can Advance the Scholarship and Practice of Management Teaching

    Science.gov (United States)

    New, J. Randolph; Clawson, James G.; Coughlan, Richard S.; Hoyle, Joe Ben

    2008-01-01

    The authors believe the development, peer review, and sharing of course portfolios can significantly improve the scholarship and teaching of management. To make this case, they provide background information about course portfolios, including origins, defining features, purposes, and potential benefits. They then identify actual portfolio projects…

  19. Improving Workplace-Based Assessment and Feedback by an E-Portfolio Enhanced with Learning Analytics

    Science.gov (United States)

    van der Schaaf, Marieke; Donkers, Jeroen; Slof, Bert; Moonen-van Loon, Joyce; van Tartwijk, Jan; Driessen, Eric; Badii, Atta; Serban, Ovidiu; Ten Cate, Olle

    2017-01-01

    Electronic portfolios (E-portfolios) are crucial means for workplace-based assessment and feedback. Although E-portfolios provide a useful approach to view each learner's progress, so far options for personalized feedback and potential data about a learner's performances at the workplace often remain unexploited. This paper advocates that…

  20. Digital Portfolios: Fact or Fashion?

    Science.gov (United States)

    Woodward, Helen; Nanlohy, Phil

    2004-01-01

    The value of portfolios as an assessment tool is thoroughly researched and their use in education is well documented ( Woodward, 2000). Research on the introduction of digital portfolios is substantially based on general portfolio research; however, additional specific factors and features need to be considered. One of the inherent dangers with…

  1. Student Chemical Engineering Reflective ePortfolios--ChE Student Perceptions of Learning from Reflective ePortfolio Creation

    Science.gov (United States)

    Cherrstrom, Catherine A.; Raisor, Cindy; Fowler, Debra

    2015-01-01

    Engineering educators and employers value and prioritize communication skills, but developing and assessing such skills in engineering programs is challenging. Reflective ePortfolios provide opportunities to enhance communication skills. The purpose of this three-­year qualitative case study was to investigate the use of reflective ePortfolios in…

  2. Advantages of coordinated school health portfolios: documenting and showcasing achievements.

    Science.gov (United States)

    Shipley, Meagan; Lohrmann, David; Barnes, Priscilla; O'Neill, Jim

    2013-04-01

    Thirteen school district teams from Michigan and Indiana participated in the Michiana Coordinated School Health Leadership Institute with the intent of Coordinated School Health Program (CSHP) implementation. The purpose of this study was to determine if portfolios served as an effective approach for documenting teams' accomplishments and health programming efforts. Data were gathered through a combined survey/interview process and portfolio analysis. The survey was developed by the Institute's core team of experts and designed to assess the Institute's goals and objectives. Interviews elicited greater detail pertaining to survey questions. Content analysis yielded a detailed and descriptive summary of each team's portfolio. Portfolios proved useful for providing rich descriptions and artifacts documenting each team's process and progress toward achieving CSHP. They were not limited to the 12 required Michiana categories and contained additional items related to other aspects of health programming. Portfolios also served as a record-keeping and CSHP marketing tool. This study demonstrates the advantages of portfolios for documenting the process of CSHP development and implementation and teams' health programming efforts. The portfolios provided evidence of team achievements related to Institute goals and objectives-those that included greater documentation were indicative of fuller implementation. Teams with portfolios that used both categorical and scrapbook formats provided richer portrayals of successes to a broader variety of audiences. © 2013, American School Health Association.

  3. Linearly Adjustable International Portfolios

    Science.gov (United States)

    Fonseca, R. J.; Kuhn, D.; Rustem, B.

    2010-09-01

    We present an approach to multi-stage international portfolio optimization based on the imposition of a linear structure on the recourse decisions. Multiperiod decision problems are traditionally formulated as stochastic programs. Scenario tree based solutions however can become intractable as the number of stages increases. By restricting the space of decision policies to linear rules, we obtain a conservative tractable approximation to the original problem. Local asset prices and foreign exchange rates are modelled separately, which allows for a direct measure of their impact on the final portfolio value.

  4. Mentoring portfolio use in undergraduate and postgraduate medical education.

    Science.gov (United States)

    Dekker, Hanke; Driessen, Erik; Ter Braak, Edith; Scheele, Fedde; Slaets, Joris; Van Der Molen, Thys; Cohen-Schotanus, Janke

    2009-10-01

    Mentoring is widely acknowledged as being crucial for portfolio learning. The aim of this study is to examine how mentoring portfolio use has been implemented in undergraduate and postgraduate settings. The results of interviews with six key persons involved in setting up portfolio use in medical education programmes were used to develop a questionnaire, which was administered to 30 coordinators of undergraduate and postgraduate portfolio programmes in the Netherlands and Flanders. The interviews yielded four main aspects of the portfolio mentoring process--educational aims, individual meetings, small group sessions and mentor characteristics. Based on the questionnaire data, 16 undergraduate and 14 postgraduate programmes were described. Providing feedback and stimulating reflection were the main objectives of the mentoring process. Individual meetings were the favourite method for mentoring (26 programmes). Small group sessions to support the use of portfolios were held in 16 programmes, mostly in the undergraduate setting. In general, portfolio mentors were clinically qualified academic staff trained for their mentoring tasks. This study provides a variety of practical insights into implementing mentoring processes in portfolio programmes.

  5. SOARD Research Portfolio

    Science.gov (United States)

    2013-03-05

    Research with Brazil The Problem: Ionospheric bubbles are rarefied plasma regions. Ionospheric irregularities inside the bubbles have scale size...stations installed 2010 MAGNETIC EQUATOR Data Collection Stations - Brazil Project: “ Ionospheric Irregularities Predictions and Plumes...Briefing Contents • Space Science Portfolio – Solar, Ionosphere , Magnetosphere (Kent Miller (AFOSR), RV) • Molecular Physics – Isotope Decay

  6. Portfolio, refleksion og feedback

    DEFF Research Database (Denmark)

    Hansen, Jens Jørgen; Qvortrup, Ane; Christensen, Inger-Marie F.

    2017-01-01

    Denne leder definerer indledningsvist begrebet portfolio og gør rede for anvendelsesmuligheder i en uddannelseskontekst. Dernæst behandles portfoliometodens kvalitet og effekt for læring og undervisning og de centrale begreber refleksion, progression og feedback præsenteres og diskuteres. Herefter...

  7. Sparse and stable Markowitz portfolios.

    Science.gov (United States)

    Brodie, Joshua; Daubechies, Ingrid; De Mol, Christine; Giannone, Domenico; Loris, Ignace

    2009-07-28

    We consider the problem of portfolio selection within the classical Markowitz mean-variance framework, reformulated as a constrained least-squares regression problem. We propose to add to the objective function a penalty proportional to the sum of the absolute values of the portfolio weights. This penalty regularizes (stabilizes) the optimization problem, encourages sparse portfolios (i.e., portfolios with only few active positions), and allows accounting for transaction costs. Our approach recovers as special cases the no-short-positions portfolios, but does allow for short positions in limited number. We implement this methodology on two benchmark data sets constructed by Fama and French. Using only a modest amount of training data, we construct portfolios whose out-of-sample performance, as measured by Sharpe ratio, is consistently and significantly better than that of the naïve evenly weighted portfolio.

  8. Portfolio optimization retail investor

    Directory of Open Access Journals (Sweden)

    I. А. Kiseleva

    2016-01-01

    Full Text Available The article notes that the task of the investor's risk management is to, on the one hand, as much as possible to strive to achieve the criterion of risk level, and on the other hand, in any case not exceed it. Since the domestic theory of risk management is under development, the problem of the optimal ratio of "risk-income" becomes now of particular relevance. This article discusses the different distribution areas of the private investor in order to obtain the maximum profit. The analysis showed us the overall economic and political system of the country, as well as the legislative provision of guarantees to the investor. To obtain sufficient income and reduce losses it is important to maintain the optimum value found between the amount of the investor's risk and capital transactions. Model of optimal placement of funds led to the conclusion about inexpediency strong increase in the diversification of the investment portfolio (more than 10 different types of assets in the portfolio, since it increases the complexity of its practical form, while the portfolio characteristics are improved significantly. It is concluded that it is impossible to increase revenue without increasing the risk or reduce risk without reducing income. The analysis shows that there is no single best asset portfolio. It is impossible to increase revenue without increasing the risk or reduce risk without reducing income. Possible combination of the "riskincome" will depend on the objective function. Most diversified and bringing the best return per unit of risk, is a portfolio that contains the most risky assets.

  9. Using portfolios to introduce the clinical nurse leader to the job market.

    Science.gov (United States)

    Norris, Tommie L; Webb, Sherry S; McKeon, Leslie M; Jacob, Susan R; Herrin-Griffith, Donna

    2012-01-01

    Development of a portfolio is an effective strategy used by clinical nurse leaders (CNLs) to inform prospective employers of their specialized skills in quality improvement, patient safety, error prevention, and teamwork. The portfolio provides evidence of competence relative to the role of clinician, outcomes manager, client advocate, educator, information manager, systems analyst/risk anticipator, team manager, healthcare professional, and lifelong learner. This article describes the CNL portfolio developed by experts from the University of Tennessee Health Science Center and Methodist LeBonheur Healthcare. Examples of portfolio documents generated throughout the master's entry CNL curriculum are provided, along with student experiences using the portfolio in the employment interview process.

  10. Inquiry into the Conceptual Dimensions of Project Portfolio Management

    Directory of Open Access Journals (Sweden)

    Pedro Bruno de Souza

    2015-01-01

    Full Text Available Although much has been written about how to manage individual projects, there is still little guidance on how to evaluate the “quality” of project portfolio management itself, that is, the degree of “accomplishment” of the process by which the project portfolio is formed and run. This study addresses this gap by employing a q ualitative approach to uncover managerial perceptions about what is encompassed by project portfolio management and how the this construct should be evaluated. By building from a review of the scant literature on project portfolio management , conversations with expert scholars on project management, interpretations provided by managers, and theoretical reflection by the authors of this study, it was possible to identify main aspects that seem to tap how the degree of “accomplishment” of project portfolio ma nagement can be conceptually defined and operationally measured.

  11. Portfolio Optimization and Mortgage Choice

    Directory of Open Access Journals (Sweden)

    Maj-Britt Nordfang

    2017-01-01

    Full Text Available This paper studies the optimal mortgage choice of an investor in a simple bond market with a stochastic interest rate and access to term life insurance. The study is based on advances in stochastic control theory, which provides analytical solutions to portfolio problems with a stochastic interest rate. We derive the optimal portfolio of a mortgagor in a simple framework and formulate stylized versions of mortgage products offered in the market today. This allows us to analyze the optimal investment strategy in terms of optimal mortgage choice. We conclude that certain extreme investors optimally choose either a traditional fixed rate mortgage or an adjustable rate mortgage, while investors with moderate risk aversion and income prefer a mix of the two. By matching specific investor characteristics to existing mortgage products, our study provides a better understanding of the complex and yet restricted mortgage choice faced by many household investors. In addition, the simple analytical framework enables a detailed analysis of how changes to market, income and preference parameters affect the optimal mortgage choice.

  12. Saving Behavior and Portfolio Choice After Retirement

    NARCIS (Netherlands)

    van Ooijen, Raun; Alessie, Rob; Kalwij, Adriaan

    2015-01-01

    This paper reviews the literature on saving behavior and portfolio choice after retirement and provides a descriptive analysis of this behavior by Dutch elderly households. Studying saving behavior in the Netherlands is informative because of the very different institutional background compared to

  13. Integrating ePortfolios into Sustainability Education

    Science.gov (United States)

    Habron, Geoffrey

    2015-01-01

    Given the importance of applied learning and skills needed in sustainability education, this study sought to explore how electronic portfolios enable students to provide a range of evidence to demonstrate their sustainability learning. Michigan State University developed an undergraduate minor on sustainability that required students to provide…

  14. The development of an electronic educational portfolio: an outline for medical education professionals.

    Science.gov (United States)

    Lewis, Kadriye O; Baker, Raymond C

    2007-01-01

    A growing body of literature shows that many universities and colleges are making educational portfolios part of their faculty assessment and student's learning plan for both undergraduate and graduate programs. We provide an outline for the development of a medical educator's portfolio, including an electronic version. Guidelines for the development of an educational portfolio focusing on medical education are provided, including design, format, and content. An electronic version of the portfolio, which combines flexibility and ease of revision, is also described, including formats for publication and distribution. Student reflections on the e-portfolio are presented, and potential applications of the e-portfolio in medical education are described. We believe that portfolio development is a valuable application that provides rich documentation of participants' educational history, accomplishments, and intellectual property as related to their professional learning and growth.

  15. Public Pedagogical Portfolio

    DEFF Research Database (Denmark)

    Andersen, Shuang Ma

    in preparing this piece of work is to • profile myself as a teacher • through the portfolio writing, to develop my own understanding of teaching and to improve my own teaching • document pedagogical knowledge • document my own competence • analyze and relate pedagogical theory with practical teaching...... in teaching aspect (SWOT analysis) • generate improvement and future plan • share my pedagogical knowledge and understanding with others, and through supervision and exam, it will be inspected and improved • achieve a proof of a pedagogical education The goal of this work is to • use theoretical knowledge......This portfolio is a summary of my pedagogical training between 2010 and 2011 based on university adjunct education (DACIN Pædagogisk Grundkursus). Instead of completion of a pedagogical education, I will say it is a start / continue of the lifelong pedagogical mentality. The essential purpose...

  16. Hvorfor anvende portfolio eksamen?

    DEFF Research Database (Denmark)

    Elley, Tina Ninka

    2014-01-01

    In Denmark the Biomedical Laboratory Scientist programme lasts for 3½ years, divided into 14 modules of 10 weeks. Every module concludes with an exam, which can be very stressful for the students. A survey was made among the students, confirming this. How can we change some of the exams in order...... to minimize the students' stress level? Then the pedagogical considerations started – where and how to do this? The conclusion was to work with the portfolio format at module 6 and module 7 and make it the exam form, as it was possible to divide the expected learning outcome for the two modules into topics...... from the clinical part. The two topics are weighted according to the distribution of ECTS points between theory and clinic. We implemented the portfolio format in November 2012, and the evaluations from the students have shown that the format is good; the students get less stressed at the exam...

  17. On portfolio risk diversification

    Science.gov (United States)

    Takada, Hellinton H.; Stern, Julio M.

    2017-06-01

    The first portfolio risk diversification strategy was put into practice by the All Weather fund in 1996. The idea of risk diversification is related to the risk contribution of each available asset class or investment factor to the total portfolio risk. The maximum diversification or the risk parity allocation is achieved when the set of risk contributions is given by a uniform distribution. Meucci (2009) introduced the maximization of the Rényi entropy as part of a leverage constrained optimization problem to achieve such diversified risk contributions when dealing with uncorrelated investment factors. A generalization of the risk parity is the risk budgeting when there is a prior for the distribution of the risk contributions. Our contribution is the generalization of the existent optimization frameworks to be able to solve the risk budgeting problem. In addition, our framework does not possess any leverage constraint.

  18. The use of reflective and reasoned portfolios by doctors.

    Science.gov (United States)

    Saltman, Deborah C; Tavabie, Abdollah; Kidd, Michael R

    2012-02-01

    Reflective portfolios have been widely trailed in vocational programmes for health sciences education. While not raised explicitly yet, there is recognition that an essential part of a portfolio may still be missing - that is the experience of theoretical and analytic questioning that should occur after reflection. In this paper, we argue that portfolios require both reflective and reasoned components to provide a more complete range of educational experiences for postgraduate doctors in the pursuit of higher qualifications. We describe the differentiating features between the two components and conclude with some suggestions on how both reflective and reasoned components of portfolios may work synergistically through a series of case studies. The reflective style of portfolio, which is in current use, has been widely accepted as a major advance in postgraduate medical education at all levels. It provides an effective vehicle for encouraging self-consideration and generalizability. It is an important adjunct where it functions as a personal development tool as well as a sophisticated log book. A reasoned or pedagogic element encourages more analytic activities: adding an additional component that can ground the portfolio in theory or research. The portfolio is then able to function in a range of academic spheres and provide a theoretical platform for the wide range of non-clinical empirical work undertaken in clinical settings. The addition of a reasoned component also increases the emphasis on the introduction of new concepts outside the sphere of the learner's experience. A portfolio containing both reflective and reasoned components is then able to function in a range of academic spheres and provide a theoretical platform for the wide range of non-clinical empirical work undertaken in clinical settings. In an iterative mode, such a portfolio element can support a forum for questioning established concepts within a pedagogical environment - the essence of

  19. AN EXAMPLE FOR PORTFOLIO PREPARATION IN GERMAN TEACHER TRAINING

    Directory of Open Access Journals (Sweden)

    Hüseyin ARAK

    2017-04-01

    Full Text Available In this study we are trying with the help of portfolio in teacher training and the diagnosis of the learning group concerning their skills in translation from German to Turkish, to show the documentation of the learning process. The portfolio provides a good overview about the performance of the students and it also prepares a basis for assessment. A growing self-awareness of students can be achieved through implementing the portfolio-method. The students should collect and reflect the most important materials and practices leading to key terms of the seminar. It is more than an assessment method it is a surrounding of learning. The work with portfolio has an influence on teaching, learning and assessing. As in detail, this is dependent on the aims and other characteristics of the models which take the portfolio work as a basis. The portfolio provides us a big advantage for the support of the cultural reflection. We can observe the process of the growth of knowledge step by step, because the measurement of the development in a determined period allows us either a written work or a Multiple Choice Test. In this sense we can look at the portfolio as an assessment instrument of a process.

  20. Portfolio Standards and the Promotion of Combined Heat And Power

    Science.gov (United States)

    This paper presents the basic portfolio standard design approaches, identifies key CHP-related issues for policymakers to consider, and provides state-specific information on existing standards allowing for CHP.

  1. The Role Played by Trust and Its Effect on the Competiveness of Logistics Service Providers in Hungary

    Directory of Open Access Journals (Sweden)

    Judit Oláh

    2017-12-01

    Full Text Available This research focuses on the role of trust and the impact of its level on the revenue, earnings before tax and the degree of flexibility of logistics service providers (LSPs. More specifically, the role of the executive manager is examined in relation to the impact of business relationships (trust levels within and between organizations. In addition, the analysis covers the development of revenue, earnings before tax and degree of flexibility of logistics service providers in the context of the role of the head manager. The data were collected from 51 logistics service providers in Hungary. The results show that the level of trust established in the organization (with the employees, co-workers etc. has a positive impact on the earnings before tax. Furthermore, this paper confirms that the trust executive managers establish around them is an important performance factor which even consumers perceive and that it has major significance in terms of degree of flexibility. This research further increases our understanding of the role and importance of trust as a strategic success factor for LSPs.

  2. Financial Advice and Individual Investor Portfolio Performance

    NARCIS (Netherlands)

    Kramer, M.M.

    2012-01-01

    This paper investigates whether financial advisers add value to individual investors portfolio decisions by comparing portfolios of advised and self-directed (execution-only) Dutch individual investors. The results indicate significant differences in characteristics and portfolios between these

  3. Parametric Portfolio Policies with Common Volatility Dynamics

    DEFF Research Database (Denmark)

    Ergemen, Yunus Emre; Taamouti, Abderrahim

    A parametric portfolio policy function is considered that incorporates common stock volatility dynamics to optimally determine portfolio weights. Reducing dimension of the traditional portfolio selection problem significantly, only a number of policy parameters corresponding to first- and second...

  4. A diversified portfolio model of adaptability.

    Science.gov (United States)

    Chandra, Siddharth; Leong, Frederick T L

    2016-12-01

    A new model of adaptability, the diversified portfolio model (DPM) of adaptability, is introduced. In the 1950s, Markowitz developed the financial portfolio model by demonstrating that investors could optimize the ratio of risk and return on their portfolios through risk diversification. The DPM integrates attractive features of a variety of models of adaptability, including Linville's self-complexity model, the risk and resilience model, and Bandura's social cognitive theory. The DPM draws on the concept of portfolio diversification, positing that diversified investment in multiple life experiences, life roles, and relationships promotes positive adaptation to life's challenges. The DPM provides a new integrative model of adaptability across the biopsychosocial levels of functioning. More importantly, the DPM addresses a gap in the literature by illuminating the antecedents of adaptive processes studied in a broad array of psychological models. The DPM is described in relation to the biopsychosocial model and propositions are offered regarding its utility in increasing adaptiveness. Recommendations for future research are also offered. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

  5. Uncertain Portfolio Selection with Background Risk and Liquidity Constraint

    Directory of Open Access Journals (Sweden)

    Jia Zhai

    2017-01-01

    Full Text Available This paper discusses an uncertain portfolio selection problem with consideration of background risk and asset liquidity. In addition, the transaction costs are also considered. The security returns, background asset return, and asset liquidity are estimated by experienced experts instead of historical data. Regarding them as uncertain variables, a mean-risk model with background risk, liquidity, and transaction costs is proposed for portfolio selection and the crisp forms of the model are provided when security returns obey different uncertainty distributions. Moreover, for better understanding of the impact of background risk and liquidity on portfolio selection, some important theorems are proved. Finally, numerical experiments are presented to illustrate the modeling idea.

  6. Twelve tips for creating an academic teaching portfolio.

    Science.gov (United States)

    Little-Wienert, Kim; Mazziotti, Mark

    2017-08-17

    An academic teaching portfolio is not only a requirement at many academic teaching institutions, but it is also important in a medical educator's growth and development through documentation, reflection, evaluation, and change. Creating an academic portfolio may appear daunting at first but with careful advanced preparation, organized evidence collection of your educational work, proof of scholarship, and thorough documentation of self-reflection and change, you can produce a successful product that accurately represents your educational beliefs, accomplishments, and growth throughout your career. This article provides medical educators with twelve steps for creating a successful academic teaching portfolio.

  7. Random matrix theory filters and currency portfolio optimisation

    Science.gov (United States)

    Daly, J.; Crane, M.; Ruskin, H. J.

    2010-04-01

    Random matrix theory (RMT) filters have recently been shown to improve the optimisation of financial portfolios. This paper studies the effect of three RMT filters on realised portfolio risk, using bootstrap analysis and out-of-sample testing. We considered the case of a foreign exchange and commodity portfolio, weighted towards foreign exchange, and consisting of 39 assets. This was intended to test the limits of RMT filtering, which is more obviously applicable to portfolios with larger numbers of assets. We considered both equally and exponentially weighted covariance matrices, and observed that, despite the small number of assets involved, RMT filters reduced risk in a way that was consistent with a much larger S&P 500 portfolio. The exponential weightings indicated showed good consistency with the value suggested by Riskmetrics, in contrast to previous results involving stocks. This decay factor, along with the low number of past moves preferred in the filtered, equally weighted case, displayed a trend towards models which were reactive to recent market changes. On testing portfolios with fewer assets, RMT filtering provided less or no overall risk reduction. In particular, no long term out-of-sample risk reduction was observed for a portfolio consisting of 15 major currencies and commodities.

  8. Essays on Rational Portfolio Theory

    DEFF Research Database (Denmark)

    Nielsen, Simon Ellersgaard

    -zero profitand-loss over time. There is, however, a surprisingly simple formula for the resulting hedgeerror, which has been known since the late 90s. We call this The Fundamental Theoremof Derivative Trading. This paper is a survey with twists of that result. We prove a moregeneral version of it and discuss...... Theory with Applications in Finance. Analytic solutionsto HJB equation in mathematical finance are relatively hard to come by, which stresses theneed for numerical procedures. In this paper we provide a self-contained exposition of thefinite-horizon Markov chain approximation method as championed......’s theory of optimal portfolio selection for wealth maximisingagents. In this paper we present a systematic analysis of the optimal asset allocation in aderivative-free market for the Heston model, the 3/2 model, and a Fong Vasicek type model.Under the assumption that the market price of risk...

  9. Dynamic Portfolio Choice with Frictions

    DEFF Research Database (Denmark)

    Garleanu, Nicolae; Heje Pedersen, Lasse

    2016-01-01

    We show how portfolio choice can be modeled in continuous time with transitory and persistent transaction costs, multiple assets, multiple signals predicting returns, and general signal dynamics. The objective function is derived from the limit of discrete-time models with endogenous transaction...... costs due to optimal dealer behavior. We solve the model explicitly and the intuitive solution is also the limit of the solutions of the corresponding discrete-time models. We show how the optimal high-frequency trading strategy depends on the nature of the trading costs, which in turn depend on dealers......' inventory dynamics. Finally, we provide equilibrium implications and illustrate the model's broader applicability to micro- and macro-economics, monetary policy, and political economy....

  10. Evaluation of IP Portfolios

    DEFF Research Database (Denmark)

    Søberg, Peder Veng

    2009-01-01

    As a result of an inquiry concerning how to evaluate IP (intellectual property) portfolios in order to enable the best possible use of IP resources within organizations, an IP evaluation approach primarily applicable for patents and utility models is developed. The developed approach is useful...... in order to discuss, visualize and align IPR issues with different management functions within the organization. Unlike existing approaches the present approach takes into account such value indicators as remaining lifetime, geographical range, broadness of scope and product strategic considerations...

  11. Do Portfolios Have a Future?

    Science.gov (United States)

    Driessen, Erik

    2017-01-01

    While portfolios have seen an unprecedented surge in popularity, they have also become the subject of controversy: learners often perceive little gain from writing reflections as part of their portfolios; scholars question the ethics of such obligatory reflection; and students, residents, teachers and scholars alike condemn the bureaucracy…

  12. Portfolio optimization and performance evaluation

    DEFF Research Database (Denmark)

    Juhl, Hans Jørn; Christensen, Michael

    2013-01-01

    customer portfolios are determined, and it is shown how marketing decision-makers can use this information in their marketing strategies to optimize the revenue growth of the company. Finally, our analysis is the first analysis which applies portfolio based methods to measure customer performance......, and it is shown how these performance measures complement the optimization analysis....

  13. Performance Evaluation of Constrained Portfolios

    NARCIS (Netherlands)

    I. Pouchkarev (Igor)

    2005-01-01

    textabstractConventional performance evaluation methods strongly differentiate between the universe which is used for portfolio construction, and the universe which is used for the performance evaluation. Whilst by composing the portfolio we consider the complete opportunity set, in the last case we

  14. Teaching Portfolios and University Culture

    Science.gov (United States)

    Leggett, Monica; Bunker, Alison

    2006-01-01

    The teaching portfolio has been proposed as a useful management tool for monitoring and improving teaching. It is one of the accountability mechanisms that universities have introduced in a market-oriented environment. However, there has been considerable resistance to the compulsory introduction of teaching portfolios from a wide range of…

  15. Precautionary Motives and Portfolio Decisions

    NARCIS (Netherlands)

    Hochguertel, S.

    2004-01-01

    This paper studies the empirical relevance of precautionary and other motives for household portfolio behaviour using recent panel data from the Netherlands, Dutch households' portfolios exhibit low degrees of risk taking and diversification. It is possible that this is the outcome of a rational,

  16. Æstetik og portfolio

    DEFF Research Database (Denmark)

    Hyldahl, Kirsten Kofod; Sams, Pernille; Egelund, Karen Stine

    2017-01-01

    Nærværende artikel præsenterer resultaterne af udviklingsprojektet ”Portfolio og æstetik” på pædagoguddannelsen i Hjørring. Projektet har til formål, gennem æstetisk formsprog, at stilladsere og fastholde de studerendes læreprocesser samt udvikle og implementere portfolio i studieaktiviteter på...

  17. Academic Misconduct in Teaching Portfolios

    Science.gov (United States)

    Erikson, Martin G.; Erlandson, Peter; Erikson, Malgorzata

    2015-01-01

    Within academia, clear and standardised communication is vital. From this point of departure, we discuss the trustworthiness of teaching portfolios when used in assessment. Here, misconduct and fraud are discussed in terms of fabrication, falsification, and plagiarism, following the literature on research fraud. We argue that the portfolio's…

  18. Using an ePortfolio to Assess the Outcomes of a First-Year Seminar: Student Narrative and Authentic Assessment

    Science.gov (United States)

    Buyarski, Catherine A.; Landis, Cynthia M.

    2014-01-01

    ePortfolios have been looked to as a tool for the direct assessment of student learning. Because the evidence used for assessment is actual student work, ePortfolios provide a view of learning that is not available through traditional methodologies such as student surveys and exams. This research examined 47 student ePortfolios completed as part…

  19. An unbalanced portfolio.

    Science.gov (United States)

    Federsel, Hans-Jurgen

    2009-06-01

    An excellent demonstration of how meaningful and valuable conferences devoted to the topic of project and portfolio management in the pharmaceutical industry can be, was given at an event organized in Barcelona, September 2008. Thus, over this 2-day meeting the delegates were updated on the state of the art in this wide-reaching area from speakers representing an array of companies; from small, relatively new players, via mid-sized, to established large and big pharmas. One common theme that emerged was the importance of assessing the value of drug projects as correctly as possible, especially under the current financial climate and the many challenges facing the industry. Furthermore, experiences from constructing portfolios with the aim to minimize risk and maximize return on investment were shared alongside mathematical approaches to obtain the data required for this purpose and accounts of the pleasures and hardships working in a global context and in partnership constellations. Copyright 2009 Prous Science, S.A.U. or its licensors. All rights reserved.

  20. The Maslowian Portfolio Theory Versus the Pyramid Portfolio

    Directory of Open Access Journals (Sweden)

    Majewski Sebastian

    2014-06-01

    Full Text Available This article refers to De Brouwer’s modification of portfolio selection from 2009. He modified the existing portfolio’s theories so that they could take into account the Maslov’s hierarchy of needs. This proposal could be also an alternative concept to the behavioural portfolio theory. Another theoretical concept which includes not only the hierarchy of needs but the pyramid portfolio is presented in this paper as well. The base point in this case is Markowitz’s model and the safety-first criterion by Roy. Such a construction should be a starting point for building an application in this field.

  1. 75 FR 81519 - Confirmation, Portfolio Reconciliation, and Portfolio Compression Requirements for Swap Dealers...

    Science.gov (United States)

    2010-12-28

    ... COMMISSION 17 CFR Part 23 RIN 3038-AC96 Confirmation, Portfolio Reconciliation, and Portfolio Compression... requirements for swap confirmation, portfolio reconciliation, and portfolio compression for swap dealers and... submit comments, identified by RIN number 3038-AC96 and Confirmation, Portfolio Reconciliation, and...

  2. A Simulation Approach to Statistical Estimation of Multiperiod Optimal Portfolios

    Directory of Open Access Journals (Sweden)

    Hiroshi Shiraishi

    2012-01-01

    Full Text Available This paper discusses a simulation-based method for solving discrete-time multiperiod portfolio choice problems under AR(1 process. The method is applicable even if the distributions of return processes are unknown. We first generate simulation sample paths of the random returns by using AR bootstrap. Then, for each sample path and each investment time, we obtain an optimal portfolio estimator, which optimizes a constant relative risk aversion (CRRA utility function. When an investor considers an optimal investment strategy with portfolio rebalancing, it is convenient to introduce a value function. The most important difference between single-period portfolio choice problems and multiperiod ones is that the value function is time dependent. Our method takes care of the time dependency by using bootstrapped sample paths. Numerical studies are provided to examine the validity of our method. The result shows the necessity to take care of the time dependency of the value function.

  3. Questioning Assumptions about Portfolio-Based Assessment.

    Science.gov (United States)

    Hamp-Lyons, Liz; Condon, William

    1993-01-01

    Reviews basic concepts and history of portfolio assessment as a useful means of evaluating student writing. Considers insights gained from the use of portfolio assessment. Questions five assumptions underlying portfolio assessment and suggests ways of working with portfolios that take into account new insights and perspectives. (HB)

  4. 12 CFR 347.108 - Portfolio investments.

    Science.gov (United States)

    2010-01-01

    ... INTERNATIONAL BANKING § 347.108 Portfolio investments. (a) Portfolio investments. If a bank, directly or indirectly, acquires or holds an equity interest in a foreign organization as a portfolio investment and the... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Portfolio investments. 347.108 Section 347.108...

  5. Pilot testing of guidelines to support good practice in the development of professional portfolios.

    Science.gov (United States)

    Clarke, David J; Cortis, Joseph D; Sowter, Julie

    2011-11-01

    The aims of this study were to evaluate whether the introduction of new evidence based portfolio guidelines helped students and assessors to understand the expectations for completion of a clinical practice portfolio, and whether this understanding resulted in the submission of evidence consistent with the guidelines. New evidence based portfolio guidelines were introduced to an undergraduate BSc (Hons) Radiography (Diagnostic) programme. A total of 134 students completed 12 item questionnaires relating to using the portfolio guidelines. Semi-structured interviews were undertaken with 12 students and 5 lecturer practitioners. Documentary analysis was undertaken on 26 portfolios. Survey data indicated that the new guidelines increased students' understanding of portfolio evidence requirements. Statistically significant increases in scores were evident for only two out of 12 questions; these related to understanding the need for critical reflection and which elements of the portfolio would be rewarded in assessment. Survey data also indicated some dissatisfaction with the role of lecturer practitioners and clinical assessors in relation to portfolio development. Interviews provided more mixed perceptions of the contribution of enhanced guidelines and identified some reasons for dissatisfaction with the lecturer practitioner and clinical assessor role. Documentary analysis indicated that whilst the guidelines improved students' and lecturers' understanding of evidence requirements, this did not translate into portfolio evidence which matched guideline expectations. Portfolio evidence was restricted to meeting the minimum profession specific task requirements and often indicated a mis-match between guideline expectations and assessor assessment judgements. New evidence based guidelines improved understanding of evidence and presentation requirements for clinical practice portfolios. Consistent interpretation of portfolio guidelines however requires structured

  6. Regression techniques for Portfolio Optimisation using MOSEK

    OpenAIRE

    Schmelzer, Thomas; Hauser, Raphael; Andersen, Erling; Dahl, Joachim

    2013-01-01

    Regression is widely used by practioners across many disciplines. We reformulate the underlying optimisation problem as a second-order conic program providing the flexibility often needed in applications. Using examples from portfolio management and quantitative trading we solve regression problems with and without constraints. Several Python code fragments are given. The code and data are available online at http://www.github.com/tschm/MosekRegression.

  7. Management Strategy Of Bank Credit Portfolio

    OpenAIRE

    Nenad Vunjak; Tamara Antonijevic

    2008-01-01

    Credit portfolio includes a credit group that is structured by bank management team according to credit users. Realizing the key targets of credit portfolio management imply the analysis of: (1) volume of credits, (2) portfolio structure, (3) credit services, (4) payment of credits, (5) credit price (interest rate), (6) realized profit. The credit portfolio modeling is the top management competence. Performance of credit portfolio depends from expect risks and returns estimate, having insight...

  8. CIPDSS-PST: CIPDSS portfolio slection tool documentation and user's guide.

    Energy Technology Data Exchange (ETDEWEB)

    VanKuiken, J. C.; Jusko, M. J.; Samsa, M. E.; Decision and Information Sciences

    2008-06-27

    The Critical Infrastructure Protection Decision Support System--Portfolio Support Tool (CIPDSS-PST) provides a versatile and powerful tool for selecting, optimizing, and analyzing portfolios. The software introduces a compact interface that facilitates problem definition, constraint specification, and portfolio analysis. The tool also provides a simple screen design for comparing user-preferred choices with optimized selections. CIPDSS-PST uses a portable, efficient, mixed-integer optimization engine (lp{_}solve) to derive the optimal mix of projects that satisfies the constraints and maximizes the total portfolio utility. The CIPDSS-PST software can be readily applied to other nonportfolio, resource-constrained optimization problems.

  9. Dutch direct real estate investments in private portfolios

    NARCIS (Netherlands)

    Berkhout, T.M.; Geer, van der G.

    2005-01-01

    Direct real estate plays an important role in our daily lives. The place of direct real estate in the portfolio of a private investor is often limited however. The paper attempts to answer the question of how large the allocation to direct real estate should be to attain an optimal risk/return

  10. Application of Performance Ratios in Portfolio Optimization

    Directory of Open Access Journals (Sweden)

    Aleš Kresta

    2015-01-01

    Full Text Available The cornerstone of modern portfolio theory was established by pioneer work of Harry Markowitz. Based on his mean-variance framework, Sharpe formulated his well-known Sharpe ratio aiming to measure the performance of mutual funds. The contemporary development in computer’s computational power allowed to apply more complex performance ratios, which take into account also higher moments of return probability distribution. Although these ratios were proposed to help the investors to improve the results of portfolio optimization, we empirically demonstrated in our paper that this may not necessarily be true. On the historical dataset of DJIA components we empirically showed that both Sharpe ratio and MAD ratio outperformed Rachev ratio. However, for Rachev ratio we assumed only one level of parameters value. Different set-ups of parameters may provide different results and thus further analysis is certainly required.

  11. Towards a TENCompetence ePortfolio

    Directory of Open Access Journals (Sweden)

    Adriana J. Berlanga

    2008-07-01

    Full Text Available This article argues that the TENCompetence ePortfolio definition should integrate rhetorical, pedagogical, social, and technical perspectives. The rhetorical perspective is needed to show the learner’s competences, achievements and history; the pedagogical perspective aims at supporting learner’s self-reflection, through the definition of competences mastered, review and creation of (new competence development plans, and assessment of competences; the social perspective aims at fostering interaction and social help support; and the technical perspective aims at supporting the other three perspectives. Guiding principles for the design of the TENCompetence ePortfolio are provided, and the aforementioned perspectives detailed.

  12. Feature selection for portfolio optimization

    DEFF Research Database (Denmark)

    Bjerring, Thomas Trier; Ross, Omri; Weissensteiner, Alex

    2016-01-01

    Most portfolio selection rules based on the sample mean and covariance matrix perform poorly out-of-sample. Moreover, there is a growing body of evidence that such optimization rules are not able to beat simple rules of thumb, such as 1/N. Parameter uncertainty has been identified as one major...... reason for these findings. A strand of literature addresses this problem by improving the parameter estimation and/or by relying on more robust portfolio selection methods. Independent of the chosen portfolio selection rule, we propose using feature selection first in order to reduce the asset menu....... While most of the diversification benefits are preserved, the parameter estimation problem is alleviated. We conduct out-of-sample back-tests to show that in most cases different well-established portfolio selection rules applied on the reduced asset universe are able to improve alpha relative...

  13. Noisy covariance matrices and portfolio optimization II

    Science.gov (United States)

    Pafka, Szilárd; Kondor, Imre

    2003-03-01

    Recent studies inspired by results from random matrix theory (Galluccio et al.: Physica A 259 (1998) 449; Laloux et al.: Phys. Rev. Lett. 83 (1999) 1467; Risk 12 (3) (1999) 69; Plerou et al.: Phys. Rev. Lett. 83 (1999) 1471) found that covariance matrices determined from empirical financial time series appear to contain such a high amount of noise that their structure can essentially be regarded as random. This seems, however, to be in contradiction with the fundamental role played by covariance matrices in finance, which constitute the pillars of modern investment theory and have also gained industry-wide applications in risk management. Our paper is an attempt to resolve this embarrassing paradox. The key observation is that the effect of noise strongly depends on the ratio r= n/ T, where n is the size of the portfolio and T the length of the available time series. On the basis of numerical experiments and analytic results for some toy portfolio models we show that for relatively large values of r (e.g. 0.6) noise does, indeed, have the pronounced effect suggested by Galluccio et al. (1998), Laloux et al. (1999) and Plerou et al. (1999) and illustrated later by Laloux et al. (Int. J. Theor. Appl. Finance 3 (2000) 391), Plerou et al. (Phys. Rev. E, e-print cond-mat/0108023) and Rosenow et al. (Europhys. Lett., e-print cond-mat/0111537) in a portfolio optimization context, while for smaller r (around 0.2 or below), the error due to noise drops to acceptable levels. Since the length of available time series is for obvious reasons limited in any practical application, any bound imposed on the noise-induced error translates into a bound on the size of the portfolio. In a related set of experiments we find that the effect of noise depends also on whether the problem arises in asset allocation or in a risk measurement context: if covariance matrices are used simply for measuring the risk of portfolios with a fixed composition rather than as inputs to optimization, the

  14. Portfolio management for product development

    DEFF Research Database (Denmark)

    Larsson, Flemming

    A company seek to improve the understanding of the organization’s approach to portfolio management and the inherited activities and work patterns. In addition, the company wants to obtain a better picture of challenges within the area as well as concrete suggestions for improvement. The objectives...... of this empirical study are: - Capture and describe the current portfolio management process, - Identify challenges within the proces, - Develop suggestions for improvement....

  15. Applying Monte Carlo Concept and Linear Programming in Modern Portfolio Theory to Obtain Best Weighting Structure

    Directory of Open Access Journals (Sweden)

    Tumpal Sihombing

    2013-01-01

    Full Text Available The world is entering the era of recession when the trend is bearish and market is not so favorable. The capital markets in every major country were experiencing great amount of loss and people suffered in their investment. The Jakarta Composite Index (JCI has shown a great downturn for the past one year but the trend bearish year of the JCI. Therefore, rational investors should consider restructuring their portfolio to set bigger proportion in bonds and cash instead of stocks. Investors can apply modern portfolio theory by Harry Markowitz to find the optimum asset allocation for their portfolio. Higher return is always associated with higher risk. This study shows investors how to find out the lowest risk of a portfolio investment by providing them with several structures of portfolio weighting. By this way, investor can compare and make the decision based on risk-return consideration and opportunity cost as well. Keywords: Modern portfolio theory, Monte Carlo, linear programming

  16. Use of writing portfolios for interdisciplinary assessment of critical thinking outcomes of nursing students.

    Science.gov (United States)

    Sorrell, J M; Brown, H N; Silva, M C; Kohlenberg, E M

    1997-01-01

    This article discusses an interdisciplinary research project in which faculty from nursing and english collaborated in the assessment of students' critical thinking skills as reflected in writing portfolios. Faculty reviewed students' writing portfolios and then corresponded on email from two different universities about evidence of critical thinking in the portfolios. Findings suggest that writing portfolios can provide important evidence of critical thinking outcomes. To do this, however, faculty need to design writing assignments to foster critical thinking skills, helping students to think not only about learning to write, but also about using writing to learn.

  17. Cigarette brand variant portfolio strategy and the use of colour in a darkening market.

    Science.gov (United States)

    Greenland, Steven J

    2015-03-01

    To evaluate cigarette branding strategies used to segment a market with some of the toughest tobacco controls. To document brand variant and packaging portfolios and assess the role played by colour before plain packaging, as well as consider the threat that recently implemented legislation poses for tobacco manufacturers. Brand variant and packaging details were extracted from manufacturer ingredient reports, as well as a retail audit of Australian supermarkets. Details were also collected for other product categories to provide perspective on cigarette portfolios. Secondary and primary data sources were analysed to evaluate variant and packaging portfolio strategy. In Australia, 12 leading cigarette brands supported 120 brand variants. Of these 61 had names with a specific colour and a further 26 had names with colour connotation. There were 338 corresponding packaging configurations, with most variants available in the primary cigarette distribution channel in four pack size options. Tobacco companies microsegment Australian consumers with highly differentiated product offerings and a family branding strategy that helps ameliorate the effects of marketing restrictions. To date, tobacco controls have had little negative impact upon variant and packaging portfolios, which have continued to expand. Colour has become a key visual signifier differentiating one variant from the next, and colour names are used to extend brand lines. However, the role of colour, as a heuristic to simplify consumer decision-making processes, becomes largely redundant with plain packaging. Plain packaging's impact upon manufacturers' branding strategies is therefore likely to be significant. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  18. Universal portfolios generated by the Bregman divergence

    Science.gov (United States)

    Tan, Choon Peng; Kuang, Kee Seng

    2017-04-01

    The Bregman divergence of two probability vectors is a stronger form of the f-divergence introduced by Csiszar. Two versions of the Bregman universal portfolio are presented by exploiting the mean-value theorem. The explicit form of the Bregman universal portfolio generated by a function of a convex polynomial is derived and studied empirically. This portfolio can be regarded as another generalized of the well-known Helmbold portfolio. By running the portfolios on selected stock-price data sets from the local stock exchange, it is shown that it is possible to increase the wealth of the investor by using the portfolios in investment.

  19. Portfolio as a learning tool: students' perspective.

    Science.gov (United States)

    Elango, S; Jutti, R C; Lee, L K

    2005-09-01

    Portfolio writing is a method of encouraging reflective learning among professionals. Although portfolio-based learning is popular among educators, not many studies have been done to determine students' perceptions of portfolio as a learning tool. A questionnaire survey was conducted among 143 medical students to find out their perceptions of the portfolio as a learning tool. A majority of the students felt that the portfolio is a good learning tool. However, they also perceived that it is stressful and time-consuming to develop a proper portfolio. The study indicates that students need appropriate guidance from the academic staff for the system to succeed.

  20. Land-Use Portfolio Modeler, Version 1.0

    Science.gov (United States)

    Taketa, Richard; Hong, Makiko

    2010-01-01

    Natural hazards pose significant threats to the public safety and economic health of many communities throughout the world. Community leaders and decision-makers continually face the challenges of planning and allocating limited resources to invest in protecting their communities against catastrophic losses from natural-hazard events. Public efforts to assess community vulnerability and encourage loss-reduction measures through mitigation often focused on either aggregating site-specific estimates or adopting standards based upon broad assumptions about regional risks. The site-specific method usually provided the most accurate estimates, but was prohibitively expensive, whereas regional risk assessments were often too general to be of practical use. Policy makers lacked a systematic and quantitative method for conducting a regional-scale risk assessment of natural hazards. In response, Bernknopf and others developed the portfolio model, an intermediate-scale approach to assessing natural-hazard risks and mitigation policy alternatives. The basis for the portfolio-model approach was inspired by financial portfolio theory, which prescribes a method of optimizing return on investment while reducing risk by diversifying investments in different security types. In this context, a security type represents a unique combination of features and hazard-risk level, while financial return is defined as the reduction in losses resulting from an investment in mitigation of chosen securities. Features are selected for mitigation and are modeled like investment portfolios. Earth-science and economic data for the features are combined and processed in order to analyze each of the portfolios, which are then used to evaluate the benefits of mitigating the risk in selected locations. Ultimately, the decision maker seeks to choose a portfolio representing a mitigation policy that maximizes the expected return-on-investment, while minimizing the uncertainty associated with that return

  1. Online Portfolio of Teacher Training

    Directory of Open Access Journals (Sweden)

    María Elena Mellado

    2010-05-01

    Full Text Available The purpose of the following study is to evaluate the degree of satisfaction with the online portfolio as a resource for assessing the initial teaching performance of students preparing at the Catholic University of Temuco, Chile, to become primary school teachers. Two groups were used in this research: an experimental one that worked with the online portfolio, and a control group that worked with the physical file. The sample consisted of 30 students randomly selected from the fourth year of the program. The level of satisfaction expressed by users of the portfolio was evaluated at the end of the practice-teaching experience. In order to take this measurement, an instrument called a semantic differential was especially designed for the purpose. The experimental group showed a difference significantly greater than that of the control group in the variable degree of satisfaction with the portfolio tool. Also, a positive and significant correlation was observed between the degree of satisfaction expressed by the students, and the score obtained by them in the initial-teaching-performance portfolio.

  2. Portfolio optimization with mean-variance model

    Science.gov (United States)

    Hoe, Lam Weng; Siew, Lam Weng

    2016-06-01

    Investors wish to achieve the target rate of return at the minimum level of risk in their investment. Portfolio optimization is an investment strategy that can be used to minimize the portfolio risk and can achieve the target rate of return. The mean-variance model has been proposed in portfolio optimization. The mean-variance model is an optimization model that aims to minimize the portfolio risk which is the portfolio variance. The objective of this study is to construct the optimal portfolio using the mean-variance model. The data of this study consists of weekly returns of 20 component stocks of FTSE Bursa Malaysia Kuala Lumpur Composite Index (FBMKLCI). The results of this study show that the portfolio composition of the stocks is different. Moreover, investors can get the return at minimum level of risk with the constructed optimal mean-variance portfolio.

  3. Growing a New Culture of Assessment: Planting ePortfolios in the Metro Academies Program

    Science.gov (United States)

    Shada, Alycia; Kelly, Kevin; Cox, Ruth; Malik, Savita

    2011-01-01

    This paper provides a look at the development of a new culture of assessment in higher education with the use of electronic portfolios (ePortfolios). It uses the metaphor of horticulture to describe how an inter-institutional program, Metro Academies of Health, has gone through the first two parts of the ePorticulture cycle--preparing for the use…

  4. Motivating Freshman Students in a Business Management Course via Portfolios: Practice from a Greek Public University

    Science.gov (United States)

    Papadimitriou, Antigoni

    2009-01-01

    There are many ways to approach the evaluation of student learning. Portfolios, as collections of student work, are an increasingly popular assessment strategy, especially in the United States. Portfolios provide an exceptionally comprehensive picture of student learning. However, this assessment method requires extra effort to plan, to evaluate,…

  5. Strategies for Using and Grading Undergraduate Student Assessment Portfolios in an Environmental Geology Course.

    Science.gov (United States)

    Slater, Timothy Frederick; Astwood, Philip Merritt

    1995-01-01

    Prescribes the use and grading of student-created assessment portfolios for a large-enrollment, introductory-level environmental science course. Grading involves a modified holistic-scoring technique that evaluates student-provided evidence of academic achievement from extended, authentic tasks. Portfolio use emphasizes the integration of facts…

  6. Teaching Tip: Utilizing Classroom Simulation to Convey Key Concepts in IT Portfolio Management

    Science.gov (United States)

    Larson, Eric C.

    2013-01-01

    Managing a portfolio of IT projects is an important capability for firms and their managers. The classroom simulation described here provides students in an MBA information systems management/strategy course with the opportunity to deepen their understanding of the key concepts that should be considered in managing an IT portfolio and helps…

  7. The Introduction of Portfolios in Higher Education: A Comparative Study in the UK and the Netherlands

    Science.gov (United States)

    Beishuizen, Jos; Van Boxel, Patris; Banyard, Philip; Twiner, Alison; Vermeij, Helle; Underwood, Jean

    2006-01-01

    This article describes a comparative study of the introduction of student portfolios in two departments of the Vrije Universiteit Amsterdam in the Netherlands and Nottingham Trent University in the UK. Portfolios are designed to facilitate effective management of lifelong learning, to provide a record of achievements and to encourage…

  8. Dynamic Portfolio Strategy Using Clustering Approach

    Science.gov (United States)

    Lu, Ya-Nan; Li, Sai-Ping; Jiang, Xiong-Fei; Zhong, Li-Xin; Qiu, Tian

    2017-01-01

    The problem of portfolio optimization is one of the most important issues in asset management. We here propose a new dynamic portfolio strategy based on the time-varying structures of MST networks in Chinese stock markets, where the market condition is further considered when using the optimal portfolios for investment. A portfolio strategy comprises two stages: First, select the portfolios by choosing central and peripheral stocks in the selection horizon using five topological parameters, namely degree, betweenness centrality, distance on degree criterion, distance on correlation criterion and distance on distance criterion. Second, use the portfolios for investment in the investment horizon. The optimal portfolio is chosen by comparing central and peripheral portfolios under different combinations of market conditions in the selection and investment horizons. Market conditions in our paper are identified by the ratios of the number of trading days with rising index to the total number of trading days, or the sum of the amplitudes of the trading days with rising index to the sum of the amplitudes of the total trading days. We find that central portfolios outperform peripheral portfolios when the market is under a drawup condition, or when the market is stable or drawup in the selection horizon and is under a stable condition in the investment horizon. We also find that peripheral portfolios gain more than central portfolios when the market is stable in the selection horizon and is drawdown in the investment horizon. Empirical tests are carried out based on the optimal portfolio strategy. Among all possible optimal portfolio strategies based on different parameters to select portfolios and different criteria to identify market conditions, 65% of our optimal portfolio strategies outperform the random strategy for the Shanghai A-Share market while the proportion is 70% for the Shenzhen A-Share market. PMID:28129333

  9. The Sharpe ratio of estimated efficient portfolios

    OpenAIRE

    Kourtis, Apostolos

    2016-01-01

    Investors often adopt mean-variance efficient portfolios for achieving superior risk-adjusted returns. However, such portfolios are sensitive to estimation errors, which affect portfolio performance. To understand the impact of estimation errors, I develop simple and intuitive formulas of the squared Sharpe ratio that investors should expect from estimated efficient portfolios. The new formulas show that the expected squared Sharpe ratio is a function of the length of the available data, the ...

  10. Dynamic Portfolio Strategy Using Clustering Approach.

    Science.gov (United States)

    Ren, Fei; Lu, Ya-Nan; Li, Sai-Ping; Jiang, Xiong-Fei; Zhong, Li-Xin; Qiu, Tian

    2017-01-01

    The problem of portfolio optimization is one of the most important issues in asset management. We here propose a new dynamic portfolio strategy based on the time-varying structures of MST networks in Chinese stock markets, where the market condition is further considered when using the optimal portfolios for investment. A portfolio strategy comprises two stages: First, select the portfolios by choosing central and peripheral stocks in the selection horizon using five topological parameters, namely degree, betweenness centrality, distance on degree criterion, distance on correlation criterion and distance on distance criterion. Second, use the portfolios for investment in the investment horizon. The optimal portfolio is chosen by comparing central and peripheral portfolios under different combinations of market conditions in the selection and investment horizons. Market conditions in our paper are identified by the ratios of the number of trading days with rising index to the total number of trading days, or the sum of the amplitudes of the trading days with rising index to the sum of the amplitudes of the total trading days. We find that central portfolios outperform peripheral portfolios when the market is under a drawup condition, or when the market is stable or drawup in the selection horizon and is under a stable condition in the investment horizon. We also find that peripheral portfolios gain more than central portfolios when the market is stable in the selection horizon and is drawdown in the investment horizon. Empirical tests are carried out based on the optimal portfolio strategy. Among all possible optimal portfolio strategies based on different parameters to select portfolios and different criteria to identify market conditions, 65% of our optimal portfolio strategies outperform the random strategy for the Shanghai A-Share market while the proportion is 70% for the Shenzhen A-Share market.

  11. Sygeplejestuderendes brug af portfolio i klinisk undervisning

    DEFF Research Database (Denmark)

    Hjorth, Anne Charlotte Overgaard; Bruhn, Helle

    2014-01-01

    Brugen af portfolio var mangelfuld, men et udviklingsprojekt i samarbejde med den kommunale sygepleje motiverede både sygeplejestuderende og kliniske vejledere til at anvende læringsdelen af portfolio aktivt.......Brugen af portfolio var mangelfuld, men et udviklingsprojekt i samarbejde med den kommunale sygepleje motiverede både sygeplejestuderende og kliniske vejledere til at anvende læringsdelen af portfolio aktivt....

  12. Managing the New Product Portfolio

    DEFF Research Database (Denmark)

    Larsson, Flemming

    2008-01-01

    . The research project has partially been carried out at the Massachusetts Institute of Technology (MIT). The results of the dissertation build on research literature and empirical studies. All contributions have been confronted with industrial portfolio management practices or industry professional’s judgement......Product development companies are increasingly confronted with an unforgiving global marketplace, which urges the top management to pursue every product development opportunity that appears on the road. This situation incurs an important question: Which product development opportunities should...... a company choose to pursue in order to maximize the business results? Portfolio management is an essential means to accommodate this paradox. The three major contributions documented in this dissertation are a reference model for portfolio management, and a mindset together with three supporting tools...

  13. Electronic portfolios in nursing education: a review of the literature.

    Science.gov (United States)

    Green, Janet; Wyllie, Aileen; Jackson, Debra

    2014-01-01

    As health professionals, nurses are responsible for staying abreast of current professional knowledge and managing their own career, professional growth and development, and ideally, practices to support these activities should start during their student years. Interest in electronic or eportfolios is gathering momentum as educationalists explore their potential as a strategy for fostering lifelong learning and enhancing on-going personal and professional development. In this paper, we present an overview of e-portfolios and their application to nurse education, highlighting potential benefits and considerations of useage. We argue that the e-portfolio can represent an authentic means of assessing cognitive, reflective and affective skills. Furthermore, the e-portfolio provides a means through which nurses can record and provide evidence of skills, achievements, experience, professional development and on-going learning, not only for themselves, but for the information and scrutiny of registration boards, employers, managers and peers. Crown Copyright © 2013. Published by Elsevier Ltd. All rights reserved.

  14. Using the e-Portfolio to Document and Evaluate Growth in Reflective Practice: The Development and Application of a Conceptual Framework

    Science.gov (United States)

    Pitts, Wesley; Ruggirello, Rachel

    2012-01-01

    This case study focused on the electronic portfolio (e-portfolio) as a portrait of teacher growth in an in-service chemistry education graduate program. The e-portfolio provided a multimedia space for systematic documentation of teacher professional growth within the domain of reflective practice. In this study, the outcome and illustration of…

  15. EFL Writers' Perceptions of Portfolio Keeping

    Science.gov (United States)

    Aydin, Selami

    2010-01-01

    Although portfolios in writing in English as a Foreign Language (EFL) learning are alternative tools, the portfolio process mainly concerns the decisions of language teachers rather than students' perceptions of portfolios. The present study aims to descriptively measure the perceptions of English as a Foreign Language (EFL) students towards…

  16. The Scoring of Writing Portfolios: Phase 2

    Science.gov (United States)

    White, Edward M.

    2005-01-01

    Although most portfolio evaluation currently uses some adaptation of holistic scoring, the problems with scoring portfolios holistically are many, much more than for essays, and the problems are not readily resolvable. Indeed, many aspects of holistic scoring work against the principles behind portfolio assessment. We have from the start needed a…

  17. Views on Using Portfolio in Teacher Education

    Science.gov (United States)

    Imhof, Margarete; Picard, Christin

    2009-01-01

    The usage of portfolio methods to document professional development in teaching is increasing in Germany, but despite its proliferation, the issue of how the effects of portfolio methods can be determined has received little attention. This paper investigates the acceptance of portfolio by the pre-service teachers (N = 144, 112 female) and the…

  18. Automated mass maintenance of a software portfolio

    NARCIS (Netherlands)

    Veerman, N.P.

    2006-01-01

    This is an experience report on automated mass maintenance of a large Cobol software portfolio. A company in the financial services and insurance industry upgraded their database system to a new version, affecting their entire software portfolio. The database system was accessed by the portfolio of

  19. Using Electronic Portfolios for Second Language Assessment

    Science.gov (United States)

    Cummins, Patricia W.; Davesne, Celine

    2009-01-01

    Portfolio assessment as developed in Europe presents a learner-empowering alternative to computer-based testing. The authors present the European Language Portfolio (ELP) and its American adaptations, LinguaFolio and the Global Language Portfolio, as tools to be used with the Common European Framework of Reference for languages and the American…

  20. Household portfolios and implicit risk aversion

    NARCIS (Netherlands)

    Bucciol, A.; Miniaci, R.

    2008-01-01

    We derive from a sample of US households the distribution of the risk aversion implicit in their portfolio choice. Our estimate minimizes the distance between the certainty equivalent return generated with observed portfolios and portfolios that are optimal in a mean-variance framework. Taking into

  1. Quantitative investment strategies and portfolio management

    NARCIS (Netherlands)

    Guo, J.

    2012-01-01

    This book contains three essays on alternative investments and portfolio management. Taking from a portfolio investor’s perspective, the first essay analyzes the portfolio implication of investing in hedge funds when there is a hedge fund lockup period. The second essay studies the investment

  2. Reflective portfolios support learning, personal growth and ...

    African Journals Online (AJOL)

    Two major themes were explored – the benefit of the portfolio to the student and to faculty. For students, portfolios promoted reflective abilities and critical thinking and assisted them in planning learning needs. For faculty, the portfolios assisted in monitoring students' growth over time, identified learning gaps, helped to ...

  3. Delegated Portfolio Management and Optimal Allocation of Portfolio Managers

    DEFF Research Database (Denmark)

    Christensen, Michael; Vangsgaard Christensen, Michael; Gamskjaer, Ken

    2015-01-01

    In this article, we investigate whether the application of the mean-variance framework on portfolio manager allocation offers any out-of-sample benefits compared to a naïve strategy of equal weighting. Based on an exclusive data-set of high-net-worth (HNW) investors, we utilize a wide variety...

  4. Hospital innovation portfolios: key determinants of size and innovativeness.

    Science.gov (United States)

    Schultz, Carsten; Zippel-Schultz, Bettina; Salomo, Søren

    2012-01-01

    Health care organizations face an increasing demand for strategic change and innovation; however, there are also several barriers to innovation that impede successful implementation. We aimed to shed light on key issues of innovation management in hospitals and provide empirical evidence for controlling the size and innovativeness of a hospital's new health service and process portfolio. We show how health care managers could align the need for exploration and exploitation by applying both informal (e.g., employee encouragement) and formal (e.g., analytical orientation and reward systems) organizational mechanisms. To develop hypotheses, we integrated the innovation management literature into the hospital context. Detailed information about the innovation portfolio of 87 German hospitals was generated and combined with multirespondent survey data using ratings from management, medical, and nursing directors. Multivariate regression analysis was applied. The empirical results showed that an analytical approach increased the size of innovation portfolios. Employee encouragement amplified the degree of innovativeness of activities in the portfolio. Reward systems did not have direct effects on the composition of innovation portfolios. However, they adjusted bottom-up employee and top-down strategic initiatives to match with the existing organization, thereby decreasing the degree of innovativeness and enforcing exploitation. Hospitals should intertwine employee encouragement, analytical approaches, and formal reward systems depending on organizational goals.

  5. Contract portfolio optimization for a gasoline supply chain

    Science.gov (United States)

    Wang, Shanshan

    Major oil companies sell gasoline through three channels of trade: branded (associated with long-term contracts), unbranded (associated with short-term contracts), and spot market. The branded channel provides them with a long-term secured and sustainable demand source, but requires an inflexible long-term commitment with demand and price risks. The unbranded channel provides a medium level of allocation flexibility. The spot market provides them with the greatest allocation flexibility to the changing market conditions, but the spot market's illiquidity mitigates this benefit. In order to sell the product in a profitable and sustainable way, they need an optimal contract portfolio. This dissertation addresses the contract portfolio optimization problem from different perspectives (retrospective view and forward-looking view) at different levels (strategic level, tactical level and operational level). The objective of the retrospective operational model is to develop a financial case to estimate the business value of having a dynamic optimization model and quantify the opportunity values missed in the past. This model proves the financial significance of the problem and provides top management valuable insights into the business. BP has applied the insights and principles gained from this work and implemented the model to the entire Midwest gasoline supply chain to retrospectively review optimization opportunities. The strategic model is the most parsimonious model that captures the essential economic tradeoffs among different contract types, to demonstrate the need for a contract portfolio and what drives the portfolio. We examine the properties of the optimal contract portfolio and provide a comparative statics analysis by changing the model parameters. As the strategic model encapsulates the business problem at the macroscopic level, the tactical model resolves lower level issues. It considers the time dynamics, the information flow and contracting flow. Using

  6. Introducing E-portfolio Use to Primary School Pupils: Response, Benefits and Challenges

    Directory of Open Access Journals (Sweden)

    Dimitra Theodosiadou

    2015-03-01

    Full Text Available Electronic portfolios (e-portfolios have a positive impact on the learning process in a broad range of educational sectors and on learners of all ages. Yet because most e-portfolio-related studies are about their implementation in higher education, this type of research is less usual in the early childhood context, and there is no available research for Greek schools. This study aims to investigate the impact of e-portfolios on learning in a Greek primary school and to provide a resource regarding the educational benefits of e-portfolio in primary education. To do that, it employs the qualitative naturalistic method to collect data, along with mixed methods which were used to achieve triangulation and strengthen confidence in the outcomes. Participants in the research were fourteen 8-year-old pupils, and one of the researchers was their regular teacher. Data evaluation revealed that the e-portfolio added value in pupils’ learning, acted as a medium to involve parents, promoted pupils’ self-esteem, and was acknowledged as a valuable assessment tool and a challenge for the school community. Based on the experience of the e-portfolio implementation, the authors provide some suggestions that would possibly help researchers and primary school teachers adopt and develop e-portfolio systems in their particular settings.

  7. SEGMENTATION OF SME PORTFOLIO IN BANKING SYSTEM

    Directory of Open Access Journals (Sweden)

    Namolosu Simona Mihaela

    2013-07-01

    Full Text Available The Small and Medium Enterprises (SMEs represent an important target market for commercial Banks. In this respect, finding the best methods for designing and implementing the optimal marketing strategies (for this target are a continuous concern for the marketing specialists and researchers from the banking system; the purpose is to find the most suitable service model for these companies. SME portfolio of a bank is not homogeneous, different characteristics and behaviours being identified. The current paper reveals empirical evidence about SME portfolio characteristics and segmentation methods used in banking system. Its purpose is to identify if segmentation has an impact in finding the optimal marketing strategies and service model and if this hypothesis might be applicable for any commercial bank, irrespective of country/ region. Some banks are segmenting the SME portfolio by a single criterion: the annual company (official turnover; others are considering also profitability and other financial indicators of the company. In some cases, even the banking behaviour becomes a criterion. For all cases, creating scenarios with different thresholds and estimating the impact in profitability and volumes are two mandatory steps in establishing the final segmentation (criteria matrix. Details about each of these segmentation methods may be found in the paper. Testing the final matrix of criteria is also detailed, with the purpose of making realistic estimations. Example for lending products is provided; the product offer is presented as responding to needs of targeted sub segment and therefore being correlated with the sub segment characteristics. Identifying key issues and trends leads to further action plan proposal. Depending on overall strategy and commercial target of the bank, the focus may shift, one or more sub segments becoming high priority (for acquisition/ activation/ retention/ cross sell/ up sell/ increase profitability etc., while

  8. Performance of the reverse Helmbold universal portfolio

    Science.gov (United States)

    Tan, Choon Peng; Kuang, Kee Seng; Lee, Yap Jia

    2017-04-01

    The universal portfolio is an important investment strategy in a stock market where no stochastic model is assumed for the stock prices. The zero-gradient set of the objective function estimating the next-day portfolio which contains the reverse Kullback-Leibler order-alpha divergence is considered. From the zero-gradient set, the explicit, reverse Helmbold universal portfolio is obtained. The performance of the explicit, reverse Helmbold universal portfolio is studied by running them on some stock-price data sets from the local stock exchange. It is possible to increase the wealth of the investor by using these portfolios in investment.

  9. Language learner autonomy and the European Language Portfolio: two L2 English examples

    OpenAIRE

    LITTLE, DAVID GEORGE

    2009-01-01

    PUBLISHED This article argues that the Council of Europe's European Language Portfolio is capable of supporting the implementation of language learner autonomy on a large scale. It begins by explaining what the author understands by `language learner autonomy?, then introduces the European Language Portfolio and explains how it can stimulate reflective learning in which goal setting and self-assessment play a central role. It concludes by giving two practical examples that involve the lear...

  10. The teaching portfolio as a professional development tool for anaesthetists.

    Science.gov (United States)

    Sidhu, N S

    2015-05-01

    A teaching portfolio (TP) is a document containing a factual description of a teacher's teaching strengths and accomplishments, allowing clinicians to display them for examination by others. The primary aim of a TP is to improve quality of teaching by providing a structure for self-reflection, which in turn aids professional development in medical education. Contents typically include a personal statement on teaching, an overview of teaching accomplishments and activities, feedback from colleagues and learners, a reflective component and some examples of teaching material. Electronic portfolios are more portable and flexible compared to paper portfolios. Clinicians gain the most benefit from a TP when it is used as a tool for self-reflection of their teaching practice and not merely as a list of activities and achievements. This article explains why and how anaesthetists might use a TP as a tool for professional development in medical education.

  11. Hospital innovation portfolios: Key determinants of size and innovativeness

    DEFF Research Database (Denmark)

    Schultz, Carsten; Zippel-Schultz, Bettina; Salomo, Søren

    2012-01-01

    from management, medical, and nursing directors. Multivariate regression analysis was applied. Findings: The empirical results showed that an analytical approach increased the size of innovation portfolios. Employee encouragement amplified the degree of innovativeness of activities in the portfolio......Background: Health care organizations face an increasing demand for strategic change and innovation; however, there are also several barriers to innovation that impede successful implementation. Purposes: We aimed to shed light on key issues of innovation management in hospitals and provide...... empirical evidence for controlling the size and innovativeness of a hospital's new health service and process portfolio. We show how health care managers could align the need for exploration and exploitation by applying both informal (e. g., employee encouragement) and formal (e.g., analytical orientation...

  12. PDP Portfolios at Utrecht University

    NARCIS (Netherlands)

    van Keulen, H.

    2006-01-01

    Utrecht University, a large and fairly traditional (but highly successful) research university in The Netherlands, embraced the concept of personal development and planning portfolios in the aftermath of the Bologna agreements. Five-year HE programmes without much freedom or choice were changed into

  13. Supply contract and portfolio insurance

    Science.gov (United States)

    Runsheng Yin; Bob Izlar

    2001-01-01

    The long-term growth of institutional timberland investments depends on the ability of timberland investment management organizations (TIMO) to deal effectively with securitization, leveraging, arbitraging, supply contracting, portfolio insurance, tax efficiency enhancement, and other issues. Financial engineering holds great promise for many of these issues. This...

  14. Portfolios for assessment of paediatric specialist registrars.

    Science.gov (United States)

    Melville, C; Rees, M; Brookfield, D; Anderson, J

    2004-10-01

    In 1997 the Royal College of Paediatrics and Child Health introduced portfolios to guide and monitor the learning of specialist registrars. We studied their value for assessment. Using Bigg's SOLO criteria we devised a marking scheme based on 6 domains of competence: clinical, communication, teaching and learning, ethics and attitudes, management and evaluation, and creation of evidence. We rated portfolios according to quality of evidence presented and expectations by year of training. We similarly assessed trainee performance in the annual record of in-training assessment (RITA) interview. Specific advice based on the results of the first portfolio assessments was circulated to all trainees, instructing them to increase the structure and decrease the bulk of portfolios. A second sample of portfolios was reviewed a year later, using similar evaluations, to determine the effects. A total of 76 portfolios were assessed in year 1 by a single rater; 30 portfolios were assessed in year 2 by 2 independent raters. The quality of documentation improved from year 1 to year 2 but there was no significant increase in portfolio scores. The inter-rater correlation coefficient of the portfolio assessment method was 0.52 (Cohen's kappa 0.35). The inter-rater correlation coefficient of the RITA interview was 0.71 (Cohen's kappa 0.38). There was moderate inter-assessment correlation between portfolios and RITA interviews (kappa 0.26 in year 1 and 0.29 in year 2). Generalisability analysis suggested that 5 successive ratings by a single observer or independent ratings by 4 observers on the same occasion would be needed to yield a generalisability coefficient > 0.8 for overall portfolio rating. This method of portfolio assessment is insufficiently reliable as a sole method for high stakes, single-instance assessment, but has a place as part of a triangulation process. Repeated portfolio assessment by paired observers would increase reliability. Longer term studies are required to

  15. Technopedagogical Design of Electronic Learning Portfolios: An Experience with Undergraduate Students

    Directory of Open Access Journals (Sweden)

    Frida Díaz Barriga Arceo

    2012-11-01

    Full Text Available In this article the technopedagogical design of electronic learning portfolios with eighteen undergraduate psychology students is reported. The e-portfolio model is based on the approach of situated learning and authentic assessment, and relies on the metaphors of the portfolio as mirror, map and sonnet. It includes a description of the e-portfolio; the skills and learnings expected of the student; key questions for reflection; minimum input required; the type of evidence or artifacts expected; and the technological resources employed. Examples of the students’ reflections and of the self-assessments and co-assessments performed are provided. The findings suggest that e-learning portfolios enable the recovery and systematization of learning productions and experiences, and can function as a tool for monitoring learning as well as for reflection on the individual’s own professional identity, personal and academic trajectory.

  16. A risk-return based model to measure the performance of portfolio management

    Directory of Open Access Journals (Sweden)

    Hamid Reza Vakili Fard

    2014-10-01

    Full Text Available The primary concern in all portfolio management systems is to find a good tradeoff between risk and expected return and a good balance between accepted risk and actual return indicates the performance of a particular portfolio. This paper develops “A-Y Model” to measure the performance of a portfolio and analyze it during the bull and the bear market. This paper considers the daily information of one year before and one year after Iran's 2013 precedential election. The proposed model of this paper provides lost profit and unrealized loss to measure the portfolio performance. The proposed study first ranks the resulted data and then uses some non-parametric methods to see whether there is any change because of the changes in markets on the performance of the portfolio. The results indicate that despite increasing profitable opportunities in bull market, the performance of the portfolio did not match the target risk. As a result, using A-Y Model as a risk and return base model to measure portfolio management's performance appears to reduce risks and increases return of portfolio.

  17. Fifteen years of portfolio assessment of dental hygiene student competency: lessons learned.

    Science.gov (United States)

    Gadbury-Amyot, Cynthia C; Bray, Kimberly Krust; Austin, Kylie J

    2014-10-01

    Adoption of portfolio assessment in the educational environment is gaining attention as a means to incorporate self-assessment into the curriculum and to use evidence to support learning outcomes and to demonstrate competency. Portfolios provide a medium for students to demonstrate and document their personal and professional growth across the curriculum. The purpose of this literature review is to discuss the drivers for portfolio education, the benefits to both students and program faculty/administrators, the barriers associated with portfolio use, and suggested solutions that have been determined through several years of "lessons learned." The University of Missouri Kansas City School of Dentistry, Division of Dental Hygiene department has been utilizing portfolio assessment for over 15 years and has collected data related to portfolio performance since 2001. Results from correlational statistics calculated on the 312 dental hygiene students that graduated from 2001 to 2013 demonstrate a positive and significant relationship between portfolio performance and overall GPA as well as portfolio performance and NBDHE scores. Copyright © 2014 The American Dental Hygienists’ Association.

  18. Portfolio Analysis of Renewable Energy Opportunities: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Richards, Allison; Deprizio, Jodi; Anderson, Kate; DiOrio, Nick; Elgqvist, Emma; Simpkins, Travis

    2016-11-01

    Time Warner Cable (TWC), now Charter Communications (CC), partnered with the National Renewable Energy Laboratory (NREL) to assess the technical and economic potential for solar photovoltaic (PV), wind, and ground-source heat-pump systems at 696 TWC facilities. NREL identified 306 sites where adding a renewable energy system would provide cost savings over the project life-cycle. In general, the top sites have some combination of high electricity rates ($0.16-$0.29/kWh), significant state incentives, and favorable net-metering policies. If all projects were implemented via third-party power purchase agreements, TWC/CC would save $37 million over 25 years and meet 10.5% of their energy consumption with renewable energy. This paper describes the portfolio screening methodology used to identify and prioritize renewable energy opportunities across the TWC sites, as well as a summary of the potential cost savings that may be realized by implementing these projects. This may provide a template for other companies interested in identifying and prioritizing renewable energy opportunities across a large number of geographically dispersed sites. Following this initial portfolio analysis, NREL will be conducting in-depth analysis of project development opportunities at ten sites and evaluating off-grid solutions that may enable carbon emission reduction and grid independence at select facilities.

  19. Adopting service governance governing portfolio value for sound corporate citzenship

    CERN Document Server

    AXELOS, AXELOS

    2015-01-01

    Adopting Service Governance provides a useful umbrella for a number of frameworks including ITIL®, TOGAF®, COBIT®, ITSM, BSM, Business Analysis, Programme Management, Management of Value, Management of Portfolios and Management of Risk by establishing the top-down governance of an organisation through services.

  20. Portfolio separation and the dynamics of bank Iiterest rates

    NARCIS (Netherlands)

    Dia, E.; Giuliodori, M.

    2012-01-01

    We develop a dynamic model of the interest rates of a monopolistic bank, providing both intermediation and payment services. We obtain testable restrictions on portfolio separation from the dynamic terms of the reduced-form solutions, and test the model using balance-sheet data from large banks of

  1. Portfolio Evaluation for Professional Competence: Credentialing in Genetics for Nurses.

    Science.gov (United States)

    Cook, Sarah Sheets; Kase, Ron; Middelton, Lindsay; Monsen, Rita Black

    2003-01-01

    Describes the process used by the Credentialing Committee of the International Society of Nurses in Genetics to validate evaluation criteria for nursing portfolios using neural network programs. Illustrates how standards are translated into measurable competencies and provides a scoring guide. (SK)

  2. Risk Assessment and Integration Team (RAIT) Portfolio Risk Analysis Strategy

    Science.gov (United States)

    Edwards, Michelle

    2010-01-01

    Impact at management level: Qualitative assessment of risk criticality in conjunction with risk consequence, likelihood, and severity enable development of an "investment policy" towards managing a portfolio of risks. Impact at research level: Quantitative risk assessments enable researchers to develop risk mitigation strategies with meaningful risk reduction results. Quantitative assessment approach provides useful risk mitigation information.

  3. Energy Efficient Urban Development Portfolio; Portfolio Energiezuinige Stedenbouw

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-10-15

    Within 10 years' time, all new buildings in the Netherlands will be built energy-neutrally. This has been agreed on in the Spring Agreement. To reach the goal of energy-neutral building, urban development adjustments are needed. This portfolio offers instruments to work with the theme of energy in urban development plans, including 10 appealing examples of projects. [Dutch] Binnen tien jaar worden in Nederland alle nieuwbouwwoningen energieneutraal gebouwd. Hier zijn afspraken over gemaakt in onder andere het Lente-akkoord. Om het doel van energieneutrale bouw te bereiken zijn ook stedenbouwkundige aanpassingen noodzakelijk. Dit portfolio geeft handvatten om met het thema energie in stedenbouwkundige plannen te werken met tien aansprekende projecten als voorbeelden.

  4. Students' reflections in a portfolio pilot: Highlighting professional issues.

    OpenAIRE

    Haffling, Ann-Christin; Beckman, Anders; Pahlmblad, Annika; Edgren, Gudrun

    2010-01-01

    Background: Portfolios are highlighted as potential assessment tools for professional competence. Although students' self-reflections are considered to be central in the portfolio, the content of reflections in practice-based portfolios is seldom analysed. Aim: To investigate whether students' reflections include sufficient dimensions of professional competence, notwithstanding a standardized portfolio format, and to evaluate students' satisfaction with the portfolio. Methods: Thi...

  5. Play Matters

    DEFF Research Database (Denmark)

    Sicart (Vila), Miguel Angel

    ? In Play Matters, Miguel Sicart argues that to play is to be in the world; playing is a form of understanding what surrounds us and a way of engaging with others. Play goes beyond games; it is a mode of being human. We play games, but we also play with toys, on playgrounds, with technologies and design......, but not necessarily fun. Play can be dangerous, addictive, and destructive. Along the way, Sicart considers playfulness, the capacity to use play outside the context of play; toys, the materialization of play--instruments but also play pals; playgrounds, play spaces that enable all kinds of play; beauty...

  6. AVC/H.264 patent portfolio license

    Science.gov (United States)

    Skandalis, Dean A.

    2006-08-01

    MPEG LA, LLC offers a joint patent license for the AVC (a/k/a H.264) Standard (ISO/IEC IS 14496-10:2004). Like MPEG LA's other licenses, the AVC Patent Portfolio License is offered for the convenience of the marketplace as an alternative enabling users to access essential intellectual property owned by many patent holders under a single license rather than negotiating licenses with each of them individually. The AVC Patent Portfolio License includes essential patents owned by DAEWOO Electronics Corporation; Electronics and Telecommunications Research Institute (ETRI); France Telecom, societe anonyme; Fujitsu Limited; Hitachi, Ltd.; Koninklijke Philips Electronics N.V.; LG Electronics Inc.; Matsushita Electric Industrial Co., Ltd.; Microsoft Corporation; Mitsubishi Electric Corporation; Robert Bosch GmbH; Samsung Electronics Co., Ltd.; Sedna Patent Services, LLC; Sharp Kabushiki Kaisha; Siemens AG; Sony Corporation; The Trustees of Columbia University in the City of New York; Toshiba Corporation; UB Video Inc.; and Victor Company of Japan, Limited. Another is expected also to join as of August 1, 2006. MPEG LA's objective is to provide worldwide access to as much AVC essential intellectual property as possible for the benefit of AVC users. Therefore, any party that believes it has essential patents is welcome to submit them for evaluation of their essentiality and inclusion in the License if found essential.

  7. Play Matters

    DEFF Research Database (Denmark)

    Sicart (Vila), Miguel Angel

    What do we think about when we think about play? A pastime? Games? Childish activities? The opposite of work? Think again: If we are happy and well rested, we may approach even our daily tasks in a playful way, taking the attitude of play without the activity of play. So what, then, is play......, but not necessarily fun. Play can be dangerous, addictive, and destructive. Along the way, Sicart considers playfulness, the capacity to use play outside the context of play; toys, the materialization of play--instruments but also play pals; playgrounds, play spaces that enable all kinds of play; beauty......? In Play Matters, Miguel Sicart argues that to play is to be in the world; playing is a form of understanding what surrounds us and a way of engaging with others. Play goes beyond games; it is a mode of being human. We play games, but we also play with toys, on playgrounds, with technologies and design...

  8. Play Matters

    DEFF Research Database (Denmark)

    Sicart (Vila), Miguel Angel

    What do we think about when we think about play? A pastime? Games? Childish activities? The opposite of work? Think again: If we are happy and well rested, we may approach even our daily tasks in a playful way, taking the attitude of play without the activity of play. So what, then, is play......? In Play Matters, Miguel Sicart argues that to play is to be in the world; playing is a form of understanding what surrounds us and a way of engaging with others. Play goes beyond games; it is a mode of being human. We play games, but we also play with toys, on playgrounds, with technologies and design......, but not necessarily fun. Play can be dangerous, addictive, and destructive. Along the way, Sicart considers playfulness, the capacity to use play outside the context of play; toys, the materialization of play--instruments but also play pals; playgrounds, play spaces that enable all kinds of play; beauty...

  9. A Relationship Strategy Perspective on Relationship Portfolios

    DEFF Research Database (Denmark)

    Ritter, Thomas; Andersen, Henrik

    2014-01-01

    The paper develops a three-dimensional portfolio model for business relationships which distinguishes among six different categories. Based on assessments of customer profitability, customer commitment, and growth potential, the positioning of a given customer relationship in the portfolio allows...... managers to determine appropriate customer relationship strategies and appropriate performance indicators. Results from applying the portfolio model are reported and managerial implications and future research are discussed....

  10. Investor protection and International Equity Portfolio Investments

    OpenAIRE

    Poshakwale, Sunil S.; Thapa, Chandra

    2011-01-01

    The paper examines the influence of investor protection on international equity portfolio investments. Using bilateral portfolio holdings data for 36 countries for 2001-2006, the study demonstrates that the investor protection measures are important determinants of foreign equity portfolio investments. The findings suggest that by improving the quality and enforcement efficiency of legal protections offered to foreign investors, policymakers may be able to attract greater in...

  11. Investment Portfolio Evaluation by the Fuzzy Approach

    Directory of Open Access Journals (Sweden)

    Lambovska Maya

    2011-09-01

    Full Text Available This paper presents a new fuzzy approach for the evaluation of investment portfolio, where the approach is viewed by the authors as a sub-phase of the management process of these portfolios. The approach defines the mutual and delayed effects among the significant variables of the investment portfolio. The evaluation of the effects is described as fuzzy trapezoidal numbers and they are aggregated by mathematical operations with incidence matrices and fuzzy functions “experton”.

  12. Can E-Portfolio Improve Students’ Readiness to Find an IT Career?

    National Research Council Canada - National Science Library

    Abdallah Tubaishat

    2015-01-01

    An E-Portfolio Assessment Management System (EAMS) can be an innovative tool that provides students with flexible opportunities to demonstrate the acquisition of skills and abilities in an outcome-based institution...

  13. Reliability of Portfolio: A Closer Look at Findings from Recent Publications

    Science.gov (United States)

    Oskay, Ozge Ozyalcin; Schallies, Michael; Morgil, Inci

    2008-01-01

    In this review article, conventional portfolio assessment and new developments in portfolio assessment are investigated. The concept of portfolio, portfolio building steps, contents of portfolio, evaluation of portfolio, advantages, disadvantages and concerns in using portfolio as well as validity and reliability of portfolio assessment are…

  14. Moving Young Children's Play Away from TV Violence. A How-to Guide for Early Childhood Educators: Child Care Providers, Head Start Instructors, Preschool and Kindergarten Teachers.

    Science.gov (United States)

    Silva, Diane

    Research concerning the effects of television violence on children--particularly young children under the age of six--has found that it tends to desensitize them to aggressive behavior and, in some children, promotes aggressive behavior in their play and other interactions with children and adults. This guide is designed to assist early childhood…

  15. A systematic review protocol on the use of teaching portfolios for educators in further and higher education.

    Science.gov (United States)

    McColgan, Karen; Blackwood, Bronagh

    2009-12-01

    This paper is a review protocol that will be used to identify, critically appraise and synthesize the best current evidence relating to the use of teaching portfolios for educators in further and higher education. While portfolio use as a means to assist students in further and higher education has undergone extensive research and review, their use as a tool to assist educators has yet to receive systematic attention. Reviews conducted on studies related to portfolio use and undergraduate students have suggested that a teaching portfolio may have a benefit for educators in higher education as a means to provide relevancy and focus to their teaching. The objectives of the review are to evaluate how a teaching portfolio assists educators in teaching and learning; to evaluate the effects of maintaining a teaching portfolio for educators in relation to personal development; to explore the type of portfolio used; to determine whether a teaching portfolio is perceived more beneficial for various grades and professional types; and to determine any motivating factors or workplace incentives behind its implementation and completion. A search of the following databases will be made: MEDLINE, CINAHL, BREI, ERIC and AUEI. The review will follow the Joanna Briggs Institute guidance for systematic reviews of quantitative and qualitative research. The review will offer clarity and direction on the use of teaching portfolios for educators, policymakers, supervisory managers and researchers involved in further and higher education.

  16. Using Continuing Professional Development with Portfolio in a Pharmaceutics Course.

    Science.gov (United States)

    Schneider, Jennifer; O'Hara, Kate; Munro, Irene

    2016-11-07

    The introduction of Continuing Professional Development (CPD) to encourage individual life-long learning as a way of maintaining professional competency in pharmacy has faced resistance. To investigate ways to address this barrier we included CPD with portfolio in a university Pharmaceutics course. Underpinning knowledge for the course was delivered using a flipped classroom approach and students used the CPD model to address clinical scenarios presented in a simulated pharmacy setting. Students produced portfolio items for the different case scenarios and submitted these for assessment. This provided the opportunity for students to carry out repeated application of the CPD cycle and, in so doing, develop skills in critical thinking for self-reflection and self-evaluation. This course was designed to encourage the development of higher level learning skills for future self-directed learning. Thirty six students submitted a completed portfolio. Twenty nine students achieved a result of >70%, five students scored between 57%-69%, one student obtained a mark of 50% and one student failed. The end of course survey revealed that while students found portfolio development challenging (40%), they also reported that it was effective for self-learning (54%). Differentiating between the concepts "reflection" and "evaluation" in CPD was problematic for some students and the use of clearer, simpler language should be used to explain these processes in future CPD work.

  17. Using Continuing Professional Development with Portfolio in a Pharmaceutics Course

    Directory of Open Access Journals (Sweden)

    Jennifer Schneider

    2016-11-01

    Full Text Available The introduction of Continuing Professional Development (CPD to encourage individual life-long learning as a way of maintaining professional competency in pharmacy has faced resistance. To investigate ways to address this barrier we included CPD with portfolio in a university Pharmaceutics course. Underpinning knowledge for the course was delivered using a flipped classroom approach and students used the CPD model to address clinical scenarios presented in a simulated pharmacy setting. Students produced portfolio items for the different case scenarios and submitted these for assessment. This provided the opportunity for students to carry out repeated application of the CPD cycle and, in so doing, develop skills in critical thinking for self-reflection and self-evaluation. This course was designed to encourage the development of higher level learning skills for future self-directed learning. Thirty six students submitted a completed portfolio. Twenty nine students achieved a result of >70%, five students scored between 57%–69%, one student obtained a mark of 50% and one student failed. The end of course survey revealed that while students found portfolio development challenging (40%, they also reported that it was effective for self-learning (54%. Differentiating between the concepts “reflection” and “evaluation” in CPD was problematic for some students and the use of clearer, simpler language should be used to explain these processes in future CPD work.

  18. Portfolio Implementation Risk Management Using Evolutionary Multiobjective Optimization

    Directory of Open Access Journals (Sweden)

    David Quintana

    2017-10-01

    Full Text Available Portfolio management based on mean-variance portfolio optimization is subject to different sources of uncertainty. In addition to those related to the quality of parameter estimates used in the optimization process, investors face a portfolio implementation risk. The potential temporary discrepancy between target and present portfolios, caused by trading strategies, may expose investors to undesired risks. This study proposes an evolutionary multiobjective optimization algorithm aiming at regions with solutions more tolerant to these deviations and, therefore, more reliable. The proposed approach incorporates a user’s preference and seeks a fine-grained approximation of the most relevant efficient region. The computational experiments performed in this study are based on a cardinality-constrained problem with investment limits for eight broad-category indexes and 15 years of data. The obtained results show the ability of the proposed approach to address the robustness issue and to support decision making by providing a preferred part of the efficient set. The results reveal that the obtained solutions also exhibit a higher tolerance to prediction errors in asset returns and variance–covariance matrix.

  19. System-of-Systems Technology-Portfolio-Analysis Tool

    Science.gov (United States)

    O'Neil, Daniel; Mankins, John; Feingold, Harvey; Johnson, Wayne

    2012-01-01

    Advanced Technology Life-cycle Analysis System (ATLAS) is a system-of-systems technology-portfolio-analysis software tool. ATLAS affords capabilities to (1) compare estimates of the mass and cost of an engineering system based on competing technological concepts; (2) estimate life-cycle costs of an outer-space-exploration architecture for a specified technology portfolio; (3) collect data on state-of-the-art and forecasted technology performance, and on operations and programs; and (4) calculate an index of the relative programmatic value of a technology portfolio. ATLAS facilitates analysis by providing a library of analytical spreadsheet models for a variety of systems. A single analyst can assemble a representation of a system of systems from the models and build a technology portfolio. Each system model estimates mass, and life-cycle costs are estimated by a common set of cost models. Other components of ATLAS include graphical-user-interface (GUI) software, algorithms for calculating the aforementioned index, a technology database, a report generator, and a form generator for creating the GUI for the system models. At the time of this reporting, ATLAS is a prototype, embodied in Microsoft Excel and several thousand lines of Visual Basic for Applications that run on both Windows and Macintosh computers.

  20. The Effect of Portfolio Assessment on Learning Idioms in Writing

    Directory of Open Access Journals (Sweden)

    Abdorreza Tahriri

    2014-04-01

    Full Text Available The present study sought to investigate the effect of portfolio assessment on idiom competence of Iranian EFL learners. For the purpose of this study, 30 students from upper-intermediate level of English proficiency took part in this study. They were chosen through convenience sampling from a language institute in Rasht, Iran. They were randomly divided into experimental and control groups. A TOEFL test and a test of idioms were given to the students to ensure their homogeneity in terms of language proficiency and knowledge of idioms, respectively. The experimental group was intended to create a portfolio and put their writing samples, in which idioms were used, in the portfolio. They were involved in the process of self-and-peer assessment. The teacher also provided them with feedback and comments. However, the control group received a kind of traditional instruction. In other words, the control group used the idioms in their writing without receiving any comments and delivered it to their teacher to be scored. The treatment lasted for 10 sessions and a post-test was administered in the end. Independent samples t-tests were used to analyze the data gathered from the pretests and the posttest. The findings indicated that there was a statistically significant difference between the two groups in terms of idioms and portfolio was found to be able to improve students’ knowledge of idioms. The results of this study have some implications for teaching and learning idioms.

  1. A case study in medical error: the use of the portfolio entry.

    Science.gov (United States)

    Chisholm, Carey D; Croskerry, Pat

    2004-04-01

    The Accreditation Council for Graduate Medical Education (ACGME) Practice-Based Learning and Improvement competency incorporates lifelong learning techniques and self-reflection. Resident portfolios have received attention as a useful method for addressing this competency. A recent patient encounter provided an experienced clinical educator with the opportunity to develop a portfolio entry that was distributed to all of the residents and faculty in an emergency medicine residency. This report may assist educators in explaining how one could approach the development of the portfolio as a tool for self-assessment. A candid discussion by a senior faculty member about issues that contributed to medical error has been underreported in the medical literature.

  2. Strategic Marketing Business Portfolio Management through Formation of Business Areas in it

    Directory of Open Access Journals (Sweden)

    Yavorska Kateryna Yu.

    2014-01-01

    Full Text Available The article states the business portfolio could be formed not only by strategic business units, but also types of activity that support them. Thus, there is a possibility of formation of a business area through creation of the second level of aggregation in the business portfolio. The article establishes that availability of business areas provides the following advantages to an enterprise: increases its resistance to the negative impact of external and internal market factors, forms input barriers against appearance of new and development of existing competitors, preserves and protects the obtained market positions by means of formation of stable and long-term competitive advantages, increases profitability of the available components in the business portfolio, etc. The article offers a model of formation of business areas, which envisages passage through three stages: detection of the market interconnections between the business portfolio components, formation of business areas on its basis, assessment of the portfolio equilibrium on the basis of the formed business areas and final selection of business areas, which would ensure the best indicators of equilibrium. The article offers a structural and logic scheme of strategic marketing management of the business portfolio, which is based on availability of business areas. Unlike the previous ones, the content of its stages envisages the business portfolio management starting from the second level of aggregation (from the level of business areas and not individual strategic business units and supporting types of activity. The offered scheme considers three situations of business portfolio management depending on the degree of its equilibrium. The article provides a method of selection of marketing strategies of development of business areas that depend on the degree of equilibrium of the portfolio and its resource potential.

  3. Mapping patent classifications: portfolio and statistical analysis, and the comparison of strengths and weaknesses.

    Science.gov (United States)

    Leydesdorff, Loet; Kogler, Dieter Franz; Yan, Bowen

    2017-01-01

    The Cooperative Patent Classifications (CPC) recently developed cooperatively by the European and US Patent Offices provide a new basis for mapping patents and portfolio analysis. CPC replaces International Patent Classifications (IPC) of the World Intellectual Property Organization. In this study, we update our routines previously based on IPC for CPC and use the occasion for rethinking various parameter choices. The new maps are significantly different from the previous ones, although this may not always be obvious on visual inspection. We provide nested maps online and a routine for generating portfolio overlays on the maps; a new tool is provided for "difference maps" between patent portfolios of organizations or firms. This is illustrated by comparing the portfolios of patents granted to two competing firms-Novartis and MSD-in 2016. Furthermore, the data is organized for the purpose of statistical analysis.

  4. Promoting Nursing Students' Clinical Learning Through a Mobile e-Portfolio.

    Science.gov (United States)

    Lai, Chin-Yuan; Wu, Cheng-Chih

    2016-11-01

    Portfolios have been advocated in nursing education to help student link theory and practice. In this study, we document the development of a mobile e-portfolio-based system, which was used to improve nursing education. The e-portfolio-based system has the advantage of allowing students to record, assess, and reflect upon their learning whether at school, a clinical site, or at home. This e-portfolio system was field tested in a 3-week psychiatric nursing practicum session involving 10 female students who were enrolled in a junior nursing college. A mixed-methods study combining qualitative and quantitative data was conducted to investigate the effects of using the system. The results of the study demonstrated that students made professional progress in both theory and practice after using the e-portfolio system. The system could also promote self-regulated learning in clinical context. Students displayed very positive attitudes overall when using the system, although there were some occasional stresses and technical difficulties. Important factors when implementing such a system included the following: adopting the proper mobile device, providing students with clear guidance on constructing the e-portfolio, and how to use the e-portfolio in a clinical setting.

  5. What Is the Relationship Between a Preclerkship Portfolio Review and Later Performance in Clerkships?

    Science.gov (United States)

    O'Brien, Celia Laird; Thomas, John X; Green, Marianne M

    2017-06-20

    Medical educators struggle to find effective ways to assess essential competencies such as communication, professionalism, and teamwork. Portfolio-based assessment provides one method of addressing this problem by allowing faculty reviewers to judge performance, as based on a longitudinal record of student behavior. At the Feinberg School of Medicine, the portfolio system measures behavioral competence using multiple assessments collected over time. This study examines whether a preclerkship portfolio review is a valid method of identifying problematic student behavior affecting later performance in clerkships. The authors divided students into two groups based on a summative preclerkship portfolio review in 2014: students who had concerning behavior in one or more competencies and students progressing satisfactorily. They compared how students in these groups later performed on two clerkship outcomes as of October 2015: final grades in required clerkships, and performance on a clerkship clinical composite score. They used Mann-Whitney tests and multiple linear regression to examine the relationship between portfolio review results and clerkship outcomes. They used USMLE Step 1 to control for knowledge acquisition. Students with concerning behavior preclerkship received significantly lower clerkship grades than students progressing satisfactorily (P = .002). They also scored significantly lower on the clinical composite score (P portfolio review can identify behaviors that impact clerkship performance. A comprehensive portfolio system is a valid way to measure behavioral competencies.

  6. The use of the multi-cumulant tensor analysis for the algorithmic optimisation of investment portfolios

    Science.gov (United States)

    Domino, Krzysztof

    2017-02-01

    The cumulant analysis plays an important role in non Gaussian distributed data analysis. The shares' prices returns are good example of such data. The purpose of this research is to develop the cumulant based algorithm and use it to determine eigenvectors that represent investment portfolios with low variability. Such algorithm is based on the Alternating Least Square method and involves the simultaneous minimisation 2'nd- 6'th cumulants of the multidimensional random variable (percentage shares' returns of many companies). Then the algorithm was tested during the recent crash on the Warsaw Stock Exchange. To determine incoming crash and provide enter and exit signal for the investment strategy the Hurst exponent was calculated using the local DFA. It was shown that introduced algorithm is on average better that benchmark and other portfolio determination methods, but only within examination window determined by low values of the Hurst exponent. Remark that the algorithm is based on cumulant tensors up to the 6'th order calculated for a multidimensional random variable, what is the novel idea. It can be expected that the algorithm would be useful in the financial data analysis on the world wide scale as well as in the analysis of other types of non Gaussian distributed data.

  7. IT Investment Allocation and Organizational Performance: A Study of Information Technology Investment Portfolios in Federal Government Agencies

    Science.gov (United States)

    Whitehead, Ennis Jim C., III

    2011-01-01

    This study examined Federal Government Information Technology (IT) portfolio investments for twenty-seven Federal Government agencies, as provided annually to the Office of Management and Budget (OMB) in their Agency IT Investment Portfolio Reports (Exhibit 53), and divided Federal agency IT investments into four categories: Innovation,…

  8. Academic portfolio in the digital era: organizing and maintaining a portfolio using reference managers.

    Science.gov (United States)

    Bhargava, Puneet; Patel, Vatsal B; Iyer, Ramesh S; Moshiri, Mariam; Robinson, Tracy J; Lall, Chandana; Heller, Matthew T

    2015-02-01

    The academic portfolio has become an integral part of the promotions process. Creating and maintaining an academic portfolio in paper-based or web-based formats can be a cumbersome and time-consuming task. In this article, we describe an alternative way to efficiently organize an academic portfolio using a reference manager software, and discuss some of the afforded advantages. The reference manager software Papers (Mekentosj, Amsterdam, The Netherlands) was used to create an academic portfolio. The article outlines the key steps in creating and maintaining a digital academic portfolio. Using reference manager software (Papers), we created an academic portfolio that allows the user to digitally organize clinical, teaching, and research accomplishments in an indexed library enabling efficient updating, rapid retrieval, and easy sharing. To our knowledge, this is the first digital portfolio of its kind.

  9. Robust Inference of Risks of Large Portfolios.

    Science.gov (United States)

    Fan, Jianqing; Han, Fang; Liu, Han; Vickers, Byron

    2016-10-01

    We propose a bootstrap-based robust high-confidence level upper bound (Robust H-CLUB) for assessing the risks of large portfolios. The proposed approach exploits rank-based and quantile-based estimators, and can be viewed as a robust extension of the H-CLUB procedure (Fan et al., 2015). Such an extension allows us to handle possibly misspecified models and heavy-tailed data, which are stylized features in financial returns. Under mixing conditions, we analyze the proposed approach and demonstrate its advantage over H-CLUB. We further provide thorough numerical results to back up the developed theory, and also apply the proposed method to analyze a stock market dataset.

  10. Model Risk in Portfolio Optimization

    Directory of Open Access Journals (Sweden)

    David Stefanovits

    2014-08-01

    Full Text Available We consider a one-period portfolio optimization problem under model uncertainty. For this purpose, we introduce a measure of model risk. We derive analytical results for this measure of model risk in the mean-variance problem assuming we have observations drawn from a normal variance mixture model. This model allows for heavy tails, tail dependence and leptokurtosis of marginals. The results show that mean-variance optimization is seriously compromised by model uncertainty, in particular, for non-Gaussian data and small sample sizes. To mitigate these shortcomings, we propose a method to adjust the sample covariance matrix in order to reduce model risk.

  11. SunShot Initiative Portfolio Book 2014

    Energy Technology Data Exchange (ETDEWEB)

    Solar Energy Technologies Office

    2014-05-01

    The 2014 SunShot Initiative Portfolio Book outlines the progress towards the goals outlined in the SunShot Vision Study. Contents include overviews of each of SunShot’s five subprogram areas, as well as a description of every active project in the SunShot’s project portfolio as of May 2014.

  12. Inside the Portfolio Experience: The Student's Perspective.

    Science.gov (United States)

    Burch, C. Beth

    1999-01-01

    Examines whether first-year composition students at two state universities believe that portfolios are as effective for students as composition instructors widely assume them to be. Investigates the assumption in composition pedagogy that portfolios are good for students' writing and that students like and appreciate the opportunity to be in a…

  13. Portfolio Assessment Handbook. 1990-91.

    Science.gov (United States)

    Thomas A. Edison State Coll., Trenton, NJ.

    This handbook gives the adult student information to complete portfolios that are designed to help adult students earn college credits for outside experience. Portfolio assessment is a flexible and efficient way to earn college credit. Nearly any area of learning can be converted into credits as long as it is taught at a regionally accredited…

  14. Unlocking ePortfolio Practice: Teaching Beliefs

    Science.gov (United States)

    Henscheid, Jean M.; Brown, Gary; Gordon, Aifang; Chen, Helen L.

    2014-01-01

    The Association for Authentic, Experiential, and Evidence-Based Learning (AAEEBL) annual ePortfolio survey focuses on understanding ePortfolio practitioners' teaching beliefs and practices. The action research reported here extends that survey research to a population of emerging educators (i.e., graduate students in education). In addition to…

  15. Portfolio Manager Selection – A Case Study

    DEFF Research Database (Denmark)

    Christensen, Michael

    2017-01-01

    Within a delegated portfolio management setting, this paper presents a case study of how the manager selection process can be operationalized in practice. Investors have to pursue a thorough screening of potential portfolio managers in order to discover their quality, and this paper discusses how...... such a screening process can be performed—represented by a case study....

  16. Making sense with ePortfolios

    DEFF Research Database (Denmark)

    Poulsen, Bo Klindt; Dimsits, Miriam

    2017-01-01

    This article discusses the question of making sense out of working with ePortfolio in adult education. The article presents the results of a small-scale survey among adults in continuing education who have worked with ePortfolio as the central didactic principle. It is argued that many...

  17. The Use of Portfolios in Leadership Education

    Science.gov (United States)

    Olsen, Paul E.

    2009-01-01

    This paper discusses the benefits of using student portfolios in undergraduate leadership education at Saint Michael's College. There appears to be a natural link between the use of portfolios as a tool to facilitate and document leadership growth and development. The Business Administration and Accounting Department at Saint Michael's College…

  18. Using E-Portfolios and ESL Learners

    Science.gov (United States)

    Alawdat, Maha

    2013-01-01

    This study examines the use of e-portfolios for ESL (English as a second language) learners. The data were collected by reviewing 11 empirical studies from 2010-2012 in order to synthesize meaningful information about e-portfolios for ESL/EFL (English as a foreign language) acquisition. The studies were coded into two main categories: learning…

  19. Capstone Portfolios and Geography Student Learning Outcomes

    Science.gov (United States)

    Mossa, Joann

    2014-01-01

    Due to increasing demands regarding student learning outcomes and accreditation, a capstone portfolio was added to assess critical thinking and communication skills of geography majors at a large public university in the USA. The portfolio guidelines were designed to be adaptable to a flexible curriculum where about half of the requirements within…

  20. Predictors and Portfolios Over the Life Cycle

    DEFF Research Database (Denmark)

    Kraft, Holger; Munk, Claus; Weiss, Farina

    In a calibrated consumption-portfolio model with stock, housing, and labor income predictability, we evaluate the welfare effects of predictability on life-cycle consumption-portfolio choice. We compare skilled investors who are able to take advantage of all sources of predictability with unskilled...

  1. Acceptability of a reflective e-portfolio instituted in an orthodontic specialist programme: a pilot study.

    Science.gov (United States)

    Tonni, I; Oliver, R G

    2013-08-01

    The purpose of the study was to highlight students' and mentors' acceptability of a reflective e-portfolio instituted in a postgraduate orthodontic programme in the UK. A reflective e-portfolio was developed on the basis of principles provided by a literature search and was piloted for 2 months with six students and seven mentors. At the end of the experience, mentors' and students' acceptability of the e-portfolio with a reflective component was studied using questionnaires. The data were analysed using basic quantitative and qualitative methods. Students' response highlighted acceptability issues related to each aspect of the e-portfolio derived from the literature: relevance of the e-portfolio reflective part; time required for the process; support and mentoring; the implementation method; and the electronic medium. Mentors showed a more positive attitude towards the e-portfolio, expressing only some concerns about the time involved in using it. Furthermore, the analysis of the data highlighted some other acceptability matters: the specificity of the e-portfolio, the communication amongst students and the relationship between students and mentors. The future successful implementation of the reflective e-portfolio will depend on the productive management of the acceptability issues identified by students and mentors, in particular:(i)the specificity of the e-portfolio that would avoid its overlapping with other part of the programme;(ii)the increasing communication amongst students to improve their knowledge of the reflective writing process; and (iii)the development of a relationship between students and mentors helping to create the appropriate environment for reflection. © 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  2. Student evaluations of the portfolio process.

    Science.gov (United States)

    Murphy, John E; Airey, Tatum C; Bisso, Andrea M; Slack, Marion K

    2011-09-10

    To evaluate pharmacy students' perceived benefits of the portfolio process and to gather suggestions for improving the process. A questionnaire was designed and administered to 250 first-, second-, and third-year pharmacy students at the University of Arizona College of Pharmacy. Although the objectives of the portfolio process were for students to understand the expected outcomes, understand the impact of extracurricular activities on attaining competencies, identify what should be learned, identify their strengths and weaknesses, and modify their approach to learning, overall students perceived the portfolio process as having less than moderate benefit. First-year students wanted more examples of portfolios while second- and third-year students suggested that more time with their advisor would be beneficial. The portfolio process will continue to be refined and efforts made to improve students' perceptions of the process as it is intended to develop the self-assessments skills they will need to improve their knowledge and professional skills throughout their pharmacy careers.

  3. Playful Gaming.

    Science.gov (United States)

    Makedon, Alexander

    A philosophical analysis of play and games is undertaken in this paper. Playful gaming, which is shown to be a synthesis of play and games, is utilized as a category for undertaking the examination of play and games. The significance of playful gaming to education is demonstrated through analyses of Plato's, Dewey's, Sartre's, and Marcuse's…

  4. Pan-European Management of Electricity Portfolios: Risks and Opportunities of Contract Bundling

    OpenAIRE

    Gampert, Markus; Madlener, Reinhard

    2010-01-01

    Today’s European utilities not only focus on electricity supply, but also offer exchange-traded “structured products” or portfolio management for unbundling financial and physical risk positions. Many utilities are only able to provide these services inside of their home markets, but in the globalized economy, the need for a centrally organized pan-European portfolio management has arisen. In this paper, we analyze the problems to be overcome for establishing a European-wide bundling of elect...

  5. The Web-based CanMEDS Resident Learning Portfolio Project (WEBCAM): how we got started.

    Science.gov (United States)

    Glen, Peter; Balaa, Fady; Momoli, Franco; Martin, Louise; Found, Dorothy; Arnaout, Angel

    2016-12-01

    The CanMEDS framework is ubiquitous in Canadian postgraduate medical education; however, training programs do not have a universal method of assessing competence. We set out to develop a novel portfolio that allowed trainees to generate a longitudinal record of their training and development within the framework. The portfolio provided an objective means for the residency program director to document and evaluate resident progress within the CanMEDS roles.

  6. Unplanned, urgent and emergency care: what are the roles that EMS plays in providing for older people with dementia? An integrative review of policy, professional recommendations and evidence.

    Science.gov (United States)

    Buswell, Marina; Lumbard, Philip; Prothero, Larissa; Lee, Caroline; Martin, Steven; Fleming, Jane; Goodman, Claire

    2016-01-01

    To synthesise the existing literature on the roles that emergency medical services (EMS) play in unplanned, urgent and emergency care for older people with dementia (OPWD), to define these roles, understand the strength of current research and to identify where the focus of future research should lie. An integrative review of the synthesised reports, briefings, professional recommendations and evidence. English-language articles were included if they made any reference to the role of EMS in the urgent or emergency care of OPWD. Preparatory scoping and qualitative work with frontline ambulance and primary care staff and carers of OPWD informed our review question and subsequent synthesis. Seventeen literature sources were included. Over half were from the grey literature. There was no research that directly addressed the review question. There was evidence in reports, briefings and professional recommendations of EMS addressing some of the issues they face in caring for OPWD. Three roles of EMS could be drawn out of the literature: emergency transport, assess and manage and a 'last resort' or safety net role. The use of EMS by OPWD is not well understood, although the literature reviewed demonstrated a concern for this group and awareness that services are not optimum. Research in dementia care should consider the role that EMS plays, particularly if considering crises, urgent care responses and transitions between care settings. EMS research into new ways of working, training or extended paramedical roles should consider specific needs and challenges of responding to people with dementia. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/

  7. Evolution of Decision Rules Used for IT Portfolio Management: An Inductive Approach

    Science.gov (United States)

    Karhade, Prasanna P.; Shaw, Michael J.; Subramanyam, Ramanath

    IT portfolio management and the related planning decisions for IT-dependent initiatives are critical to organizational performance. Building on the logic of appropriateness theoretical framework, we define an important characteristic of decision rules used during IT portfolio planning; rule appropriateness with regards to the risk-taking criterion. We propose that rule appropriateness will be an important factor explaining the evolution of rules over time. Using an inductive learning methodology, we analyze a unique dataset of actual IT portfolio planning decisions spanning two consecutive years within one organization. We present systematic comparative analysis of the evolution of rules used in planning over two years to validate our research proposition. We find that rules that were inappropriate in the first year are being redefined to design appropriate rules for use in the second year. Our work provides empirical evidence demonstrating organizational learning and improvements in IT portfolio planning capabilities.

  8. The Writing Portfolio: an alternative assessment tool with young learners of English

    Directory of Open Access Journals (Sweden)

    Melpomeni Barabouti

    2012-02-01

    Full Text Available This paper presents the implementation of a portfolio for assessment purposes, with a group of primary school learners of English, aged 11-12. The focus of the portfolio is specific, concentrating on a purposeful and systematic collection of samples of students’ written language. The paper explores theories on portfolios as an alternative method of assessment and the benefits deriving from their use in the classroom. Moreover, it analyses all the stages of the organization of the learner portfolios from beginning to end. The findings shed light not only on positive outcomes but also possible problems. The paper discusses the implications of the study for classroom practice and provides suggestions for further experimentation.

  9. OPTUM : Optimum Portfolio Tool for Utility Maximization documentation and user's guide.

    Energy Technology Data Exchange (ETDEWEB)

    VanKuiken, J. C.; Jusko, M. J.; Samsa, M. E.; Decision and Information Sciences

    2008-09-30

    The Optimum Portfolio Tool for Utility Maximization (OPTUM) is a versatile and powerful tool for selecting, optimizing, and analyzing portfolios. The software introduces a compact interface that facilitates problem definition, complex constraint specification, and portfolio analysis. The tool allows simple comparisons between user-preferred choices and optimized selections. OPTUM uses a portable, efficient, mixed-integer optimization engine (lp-solve) to derive the optimal mix of projects that satisfies the constraints and maximizes the total portfolio utility. OPTUM provides advanced features, such as convenient menus for specifying conditional constraints and specialized graphical displays of the optimal frontier and alternative solutions to assist in sensitivity visualization. OPTUM can be readily applied to other nonportfolio, resource-constrained optimization problems.

  10. Assessment and Assurance of Learning Using E-Portfolios

    Science.gov (United States)

    Papp, Raymond

    2014-01-01

    Traditional paper portfolios have been used to assess student work for performance and employment purposes for decades. The advent of electronic portfolios incorporating audio, video, hyperlinked documents and scanned images takes the use of portfolios to a new level. Evaluators can use these easily accessible portfolios to gauge student…

  11. Feedback using an ePortfolio for medicine long cases: quality not quantity

    Directory of Open Access Journals (Sweden)

    Jane Bleasel

    2016-10-01

    Full Text Available Abstract Background The evidence for the positive impact of an electronic Portfolio (ePortfolio on feedback in medicine is mixed. An ePortfolio for medical long cases in a Graduate Medical Program was developed. The purpose of this study was to explore the perceptions of medical students and faculty of the impact of the ePortfolio on the feedback process. Methods In total, 130 Year 3 medical students, and six faculty participated in the study. This is a mixed methods study, using a combination of both quantitative and qualitative approaches. Quantitative methods were used to quantify the number of long cases performed. Qualitative methods were used to explore the relationship between quantity and quality of feedback, and provide a rich understanding of both students’ and faculty’s experience and perceptions of the ePortfolio. Results Students received a variable quantity of feedback at each of the three studied clinical schools, with an average of between 4 – 5.4 feedback episodes per student. Feedback that was constructive, specific and timely and delivered by a senior academic was important. Quantity was not an essential factor, with two episodes of detailed feedback reported to be adequate. The barriers to the use of the ePortfolio were technical aspects of the platform that interfered with student engagement. Conclusions Feedback using the ePortfolio for medical long cases is a valuable tool providing a senior clinician delivers detailed, constructive and personalized feedback in a timely fashion. The ePortfolio system needs to be user-friendly to engage students.

  12. The portfolio method as management support for patients with major depression.

    Science.gov (United States)

    Nunstedt, Håkan; Nilsson, Kerstin; Skärsäter, Ingela

    2014-06-01

    To describe how patients with major depression in psychiatric outpatient care use the portfolio method and whether the method helps the patients to understand their depression. Major depressive disorder is an increasing problem in society. Learning about one's depression has been demonstrated to be important for recovery. If the goal is better understanding and management of depression, learning must proceed on the patient's own terms, based on the patient's previous understanding of their depression. Learning must be aligned with patient needs if it is to result in meaningful and useful understanding. Each patient's portfolio consisted of a binder. Inside the binder, there was a register with predetermined flaps and questions. The patients were asked to work with the questions in the sections that built the content in the portfolio. Individual interviews with patients (n = 5) suffering from major depression according to Diagnostic and Statistical Manual of Mental Disorders - Fourth Edition (DSM-IV) (American Psychiatric Association 1994) were repeatedly conducted between April 2008 and August 2009 in two psychiatric outpatient clinics in western Sweden. Data were analysed using latent content analysis. The results showed that the portfolio was used by patients as a management strategy for processing and analysis of their situation and that a portfolio's structure affects its usability. The patients use the portfolio for reflection on and confirmation of their progress, to create structure in their situation, as a management strategy for remembering situations and providing reminders of upcoming activities. Using a clearly structured care portfolio can enable participation and patient learning and help patients understand their depression. The portfolio method could provide a tool in psychiatric nursing that may facilitate patient understanding and increase self-efficacy. © 2013 John Wiley & Sons Ltd.

  13. An exploration of the current use and benefit of nursing student portfolios.

    Science.gov (United States)

    Timmins, Fiona; Dunne, Pàdraig J

    2009-04-01

    This study aims to identify the structure and of student portfolios and to ascertain their views on their usefulness. Portfolios are in common use in undergraduate nursing programmes although there are considerable variations in approaches. As a result a wide variety exists in the quality of work presented and students are often unclear as to constituent contents. This latter, while a reflection of the current status and development of portfolio use within the discipline is a source of dissatisfaction for students, and warrants further investigation. This project aimed to quantitatively capture student views using an on line survey approach utilizing a previously validated questionnaire (McMullen, 2006) [McMullen, M. 2006. Students' perceptions on the use of portfolios in pre-registration nursing education: A questionnaire survey. International Journal of Nursing Studies 43 (3), 333-343]. A survey tool is used to examine the structure, process and content of portfolios (n=481) in current use in one school. The study provides an evidence base for hitherto anecdotal comments and provides useful information for future development. While students see potential value in the portfolio use there are several areas of dissatisfaction including lack of clear guidelines. As an evolving structure within universities and practice there is much room for process improvement.

  14. ECLIPPx: an innovative model for reflective portfolios in life-long learning.

    Science.gov (United States)

    Cheung, C Ronny

    2011-03-01

    For healthcare professionals, the educational portfolio is the most widely used component of lifelong learning - a vital aspect of modern medical practice. When used effectively, portfolios provide evidence of continuous learning and promote reflective practice. But traditional portfolio models are in danger of becoming outmoded, in the face of changing expectations of healthcare provider competences today. Portfolios in health care have generally focused on competencies in clinical skills. However, many other domains of professional development, such as professionalism and leadership skills, are increasingly important for doctors and health care professionals, and must be addressed in amassing evidence for training and revalidation. There is a need for modern health care learning portfolios to reflect this sea change. A new model for categorising the health care portfolios of professionals is proposed. The ECLIPPx model is based on personal practice, and divides the evidence of ongoing professional learning into four categories: educational development; clinical practice; leadership, innovation and professionalism; and personal experience. The ECLIPPx model offers a new approach for personal reflection and longitudinal learning, one that gives flexibility to the user whilst simultaneously encompassing the many relatively new areas of competence and expertise that are now required of a modern doctor. © Blackwell Publishing Ltd 2011.

  15. A new fuzzy multi-objective higher order moment portfolio selection model for diversified portfolios

    Science.gov (United States)

    Yue, Wei; Wang, Yuping

    2017-01-01

    Due to the important effect of the higher order moments to portfolio returns, the aim of this paper is to make use of the third and fourth moments for fuzzy multi-objective portfolio selection model. Firstly, in order to overcome the low diversity of the obtained solution set and lead to corner solutions for the conventional higher moment portfolio selection models, a new entropy function based on Minkowski measure is proposed as a new objective function and a novel fuzzy multi-objective weighted possibilistic higher order moment portfolio model is presented. Secondly, to solve the proposed model efficiently, a new multi-objective evolutionary algorithm is designed. Thirdly, several portfolio performance evaluation techniques are used to evaluate the performance of the portfolio models. Finally, some experiments are conducted by using the data of Shanghai Stock Exchange and the results indicate the efficiency and effectiveness of the proposed model and algorithm.

  16. Portfolio analysis of layered security measures.

    Science.gov (United States)

    Chatterjee, Samrat; Hora, Stephen C; Rosoff, Heather

    2015-03-01

    Layered defenses are necessary for protecting the public from terrorist attacks. Designing a system of such defensive measures requires consideration of the interaction of these countermeasures. In this article, we present an analysis of a layered security system within the lower Manhattan area. It shows how portfolios of security measures can be evaluated through portfolio decision analysis. Consideration is given to the total benefits and costs of the system. Portfolio diagrams are created that help communicate alternatives among stakeholders who have differing views on the tradeoffs between security and economic activity. © 2014 Society for Risk Analysis.

  17. Technology Audit: Assessment of Innovative Portfolio

    Directory of Open Access Journals (Sweden)

    Kurushina Viktoria

    2016-01-01

    Full Text Available The article discusses the features of the technological audit performing in the companies of oil and gas sector of Russian economy. To measure the innovations quality level the scale was developed based on the Theory of Inventive Problem Solving and the theory of technological structures. Figures of the innovations quantity by levels, volume and quality of the innovative portfolio are offered for assessment the innovative portfolio quality. The method was tested on an example of oil and gas transporting enterprises. The results of the comparative analysis of innovative portfolio are shown.

  18. Portfolio assessment: Production and reduction of complexity

    DEFF Research Database (Denmark)

    Qvortrup, Ane; Keiding, Tina Bering

    2015-01-01

    Over the last two decades, the education system has witnessed a shift from summative, product-oriented assessment towards formative, process-oriented assessment. Among the different learning and assessment initiatives introduced in the slipstream of this paradigmatic turn, the portfolio seems......, produces particular conditions for the stimulation and observation of learning, thus increasing the complexity of observation of learning....... to have become one of the most popular. By re-describing the portfolio from a systems theoretical point of view, this article discusses established expectations of the portfolio in relation to transparency in learning, reflexivity and self-assessment. It shows that the majority of the literature deals...

  19. China's Outward Direct and Portfolio Investments

    Institute of Scientific and Technical Information of China (English)

    Hung-Gay Fung; Qingfeng Wilson Liu; Erin H. C. Kao

    2007-01-01

    This paper analyzes developments and trends related to China's outward direct and financial investments by examining Chinese firms' overseas acquisitions, China's holdings of US Treasury securities, and the recently formally launched Qualified Domestic Institutional Investor programs. Strategies should be developed to reach optimal decisions for both direct and portfolio investments. We argue that China should have a longer-term view for both direct and portfolio investments, enabling China to become the leader in Asia while maintaining its sustainable growth objective. China should invest heavily in the development of the Asian bond market and the Asian Currency Fund when making both portfolio and direct investment decisions.

  20. Nonparametric correlation models for portfolio allocation

    DEFF Research Database (Denmark)

    Aslanidis, Nektarios; Casas, Isabel

    2013-01-01

    This article proposes time-varying nonparametric and semiparametric estimators of the conditional cross-correlation matrix in the context of portfolio allocation. Simulations results show that the nonparametric and semiparametric models are best in DGPs with substantial variability or structural...... breaks in correlations. Only when correlations are constant does the parametric DCC model deliver the best outcome. The methodologies are illustrated by evaluating two interesting portfolios. The first portfolio consists of the equity sector SPDRs and the S&P 500, while the second one contains major...

  1. Does asymmetric correlation affect portfolio optimization?

    Science.gov (United States)

    Fryd, Lukas

    2017-07-01

    The classical portfolio optimization problem does not assume asymmetric behavior of relationship among asset returns. The existence of asymmetric response in correlation on the bad news could be important information in portfolio optimization. The paper applies Dynamic conditional correlation model (DCC) and his asymmetric version (ADCC) to propose asymmetric behavior of conditional correlation. We analyse asymmetric correlation among S&P index, bonds index and spot gold price before mortgage crisis in 2008. We evaluate forecast ability of the models during and after mortgage crisis and demonstrate the impact of asymmetric correlation on the reduction of portfolio variance.

  2. An electronic portfolio for quantitative assessment of surgical skills in undergraduate medical education.

    Science.gov (United States)

    Sánchez Gómez, Serafín; Ostos, Elisa María Cabot; Solano, Juan Manuel Maza; Salado, Tomás Francisco Herrero

    2013-05-06

    We evaluated a newly designed electronic portfolio (e-Portfolio) that provided quantitative evaluation of surgical skills. Medical students at the University of Seville used the e-Portfolio on a voluntary basis for evaluation of their performance in undergraduate surgical subjects. Our new web-based e-Portfolio was designed to evaluate surgical practical knowledge and skills targets. Students recorded each activity on a form, attached evidence, and added their reflections. Students self-assessed their practical knowledge using qualitative criteria (yes/no), and graded their skills according to complexity (basic/advanced) and participation (observer/assistant/independent). A numerical value was assigned to each activity, and the values of all activities were summated to obtain the total score. The application automatically displayed quantitative feedback. We performed qualitative evaluation of the perceived usefulness of the e-Portfolio and quantitative evaluation of the targets achieved. Thirty-seven of 112 students (33%) used the e-Portfolio, of which 87% reported that they understood the methodology of the portfolio. All students reported an improved understanding of their learning objectives resulting from the numerical visualization of progress, all students reported that the quantitative feedback encouraged their learning, and 79% of students felt that their teachers were more available because they were using the e-Portfolio. Only 51.3% of students reported that the reflective aspects of learning were useful. Individual students achieved a maximum of 65% of the total targets and 87% of the skills targets. The mean total score was 345 ± 38 points. For basic skills, 92% of students achieved the maximum score for participation as an independent operator, and all achieved the maximum scores for participation as an observer and assistant. For complex skills, 62% of students achieved the maximum score for participation as an independent operator, and 98% achieved

  3. Students' experiences and perceptions of the use of portfolios in UK preregistration dietetic placements: a questionnaire-based study.

    Science.gov (United States)

    Brennan, K M; Lennie, S C

    2010-04-01

    Reflective portfolios were introduced to dietetic practice placements in 2005, providing evidence for learning outcomes achieved and acting as a summative assessment tool. Portfolios may measure clinical competence more effectively than conventional examinations, but can be time consuming and subjective. The present study investigated current dietetic students' experiences and perceptions of the use and effectiveness of portfolio based learning and assessment during practice placements. Current UK dietetic students, who had completed a B or B and C placement, were invited to participate, via University course leaders, in an online questionnaire exploring opinions and experiences of portfolio preparation, generation, assessment, and personal and professional development and reflection. One hundred and fourteen students from 11 Universities participated. Seventy-seven percent would have liked more information about portfolio construction prior to placement. Eighty percent of students believed that reflection helped monitor their strengths and weaknesses. Perceived reflective skills were significantly positively correlated with students' perceived writing skills (P learning experience; however, 76% agreed that the amount of paperwork involved was excessive and 67% felt there were inconsistencies in portfolio assessment by different supervisors. Portfolio weaknesses identified are not specific to dietetics but are inherent to portfolio assessment across many professions. The introduction of national standardised assessment processes, practices, tools and training for assessors may help improve inter-departmental and inter-rater reliability, respectively.

  4. Development of a web database portfolio system with PACS connectivity for undergraduate health education and continuing professional development.

    Science.gov (United States)

    Ng, Curtise K C; White, Peter; McKay, Janice C

    2009-04-01

    Increasingly, the use of web database portfolio systems is noted in medical and health education, and for continuing professional development (CPD). However, the functions of existing systems are not always aligned with the corresponding pedagogy and hence reflection is often lost. This paper presents the development of a tailored web database portfolio system with Picture Archiving and Communication System (PACS) connectivity, which is based on the portfolio pedagogy. Following a pre-determined portfolio framework, a system model with the components of web, database and mail servers, server side scripts, and a Query/Retrieve (Q/R) broker for conversion between Hypertext Transfer Protocol (HTTP) requests and Q/R service class of Digital Imaging and Communication in Medicine (DICOM) standard, is proposed. The system was piloted with seventy-seven volunteers. A tailored web database portfolio system (http://radep.hti.polyu.edu.hk) was developed. Technological arrangements for reinforcing portfolio pedagogy include popup windows (reminders) with guidelines and probing questions of 'collect', 'select' and 'reflect' on evidence of development/experience, limitation in the number of files (evidence) to be uploaded, the 'Evidence Insertion' functionality to link the individual uploaded artifacts with reflective writing, capability to accommodate diversity of contents and convenient interfaces for reviewing portfolios and communication. Evidence to date suggests the system supports users to build their portfolios with sound hypertext reflection under a facilitator's guidance, and with reviewers to monitor students' progress providing feedback and comments online in a programme-wide situation.

  5. An Extensive Evaluation of Portfolio Approaches for Constraint Satisfaction Problems

    Directory of Open Access Journals (Sweden)

    Roberto Amadini

    2016-06-01

    Full Text Available In the context of Constraint Programming, a portfolio approach exploits the complementary strengths of a portfolio of different constraint solvers. The goal is to predict and run the best solver(s of the portfolio for solving a new, unseen problem. In this work we reproduce, simulate, and evaluate the performance of different portfolio approaches on extensive benchmarks of Constraint Satisfaction Problems. Empirical results clearly show the benefits of portfolio solvers in terms of both solved instances and solving time.

  6. 13 CFR 107.760 - How a change in size or activity of a Portfolio Concern affects the Licensee and the Portfolio...

    Science.gov (United States)

    2010-01-01

    ... of a Portfolio Concern affects the Licensee and the Portfolio Concern. 107.760 Section 107.760... § 107.760 How a change in size or activity of a Portfolio Concern affects the Licensee and the Portfolio Concern. (a) Effect on Licensee of a change in size of a Portfolio Concern. If a Portfolio Concern no...

  7. A Framework for Assessment of Aviation Safety Technology Portfolios

    Science.gov (United States)

    Jones, Sharon M.; Reveley, Mary S.

    2014-01-01

    The programs within NASA's Aeronautics Research Mission Directorate (ARMD) conduct research and development to improve the national air transportation system so that Americans can travel as safely as possible. NASA aviation safety systems analysis personnel support various levels of ARMD management in their fulfillment of system analysis and technology prioritization as defined in the agency's program and project requirements. This paper provides a framework for the assessment of aviation safety research and technology portfolios that includes metrics such as projected impact on current and future safety, technical development risk and implementation risk. The paper also contains methods for presenting portfolio analysis and aviation safety Bayesian Belief Network (BBN) output results to management using bubble charts and quantitative decision analysis techniques.

  8. The Shared Building Portfolio: an exploration and typology

    DEFF Research Database (Denmark)

    Brinkø, Rikke; Meel, Juriaan van; Nielsen, Susanne Balslev

    2014-01-01

    Purpose: The purpose of this paper is to explore shared-use of facilities as a concept that can help organizations to make better, more sustainable use of their building portfolios. The practical aim is to present a typology to help classify, describe and evaluate the different options for sharing...... facilities from a facility manager’s point of view. Background (State of the Art) : Space management literature provides examples and concepts for sharing space, such as ‘hot-desking’, within a given organisational and physical setting. However, this literature rarely deals with sharing on a building level...... or between organisations.Literature on the so-called ‘sharing economy’ deals with sharing itself, but not on buildings and the management of these. The shared building portfolio, the topic of this paper, draws from both of these. Approach : The paper is the result of a first, explorative study of the topic...

  9. Play, Playfulness, Creativity and Innovation

    Directory of Open Access Journals (Sweden)

    Patrick Bateson

    2014-05-01

    Full Text Available Play, as defined by biologists and psychologists, is probably heterogeneous. On the other hand, playfulness may be a unitary motivational state. Playful play as opposed to activities that merge into aggression is characterized by positive mood, intrinsic motivation, occurring in a protected context and easily disrupted by stress. Playful play is a good measure of positive welfare. It can occupy a substantial part of the waking-life of a young mammal or bird. Numerous functions for play have been proposed and they are by no means mutually exclusive, but some evidence indicates that those individual animals that play most are most likely to survive and reproduce. The link of playful play to creativity and hence to innovation in humans is strong. Considerable evidence suggests that coming up with new ideas requires a different mindset from usefully implementing a new idea.

  10. Portfolios and the assessment of competence in nursing: a literature review.

    Science.gov (United States)

    McCready, Tracey

    2007-01-01

    The purpose of this paper is to explore the literature on the portfolio as a tool for the assessment of competence in nurse education. Literature reviews are a valuable source of information; by locating, appraising and synthesising evidence from primary studies they can provide reliable answers to focused questions. They can also help to plan new research by identifying both what is known and not known in a given area. Literature reviews adhere to a scientific methodology which seeks to minimise bias and errors generating inferences based on the synthesis of best available evidence. The literature review was conducted utilising several databases, selected because of their relevance to the subject under review and including CINAHL and MEDLINE as well as a hand search of relevant journals and documents. The search terms included: nurses in education, portfolios and assessment and competence. Articles were included in the review if they focused on portfolios as a method of assessment in nurse education and if they were published after 1993 when portfolios first appeared in the nursing literature. The review divides the literature into content themes allowing synthesis of the subject looking at consistencies and differences, followed by a summary and key arguments relating to the next theme. Results highlight the importance of clear guidelines for portfolio construction and assessment, the importance of tri-partite support during portfolio development and guidelines for qualitative assessment. Where the portfolio process is well developed there are clear links to competence in practice. The evidence on portfolios as a means of assessment continues to expand. If educators take on board the lessons learned from previous research and apply it to their assessment process, the difficulties found at present, in defining and measuring competence may be reduced.

  11. Bond Portfolio Allocations in South Africa Emerging Markets

    Directory of Open Access Journals (Sweden)

    Jinghua Wang

    2016-03-01

    Full Text Available Over the past fifty years, economic growth in emerging markets has been supported by investments in capital and technology from the developed world. The benefit of this development for the emerging markets, as measured by growth in income, employment, and wealth, is immediately apparent. There have also been significant advantages for the developed world through opportunities for higher risk adjusted returns from investments in emerging markets. This study explores the benefits of the diversification of global government bond portfolio, and provides complete performance evaluations of DMs with or without South Africa emerging market (SAEM bonds. The study examines the benefits of inclusion of SAEM bonds in DMs, the degrees of financial integration among the research markets, the relative bond returns of dynamic factor models with time-varying coefficients and the robust tests of bond portfolio performance between DMs with SAEM and bond index. The results of this study provide important implications for global investors by identifying diversification gains in SAEM.  Keywords: African Bond Market, Portfolio Diversification

  12. An Evolutionary Algorithm for Multiobjective Fuzzy Portfolio Selection Models with Transaction Cost and Liquidity

    Directory of Open Access Journals (Sweden)

    Wei Yue

    2015-01-01

    Full Text Available The major issues for mean-variance-skewness models are the errors in estimations that cause corner solutions and low diversity in the portfolio. In this paper, a multiobjective fuzzy portfolio selection model with transaction cost and liquidity is proposed to maintain the diversity of portfolio. In addition, we have designed a multiobjective evolutionary algorithm based on decomposition of the objective space to maintain the diversity of obtained solutions. The algorithm is used to obtain a set of Pareto-optimal portfolios with good diversity and convergence. To demonstrate the effectiveness of the proposed model and algorithm, the performance of the proposed algorithm is compared with the classic MOEA/D and NSGA-II through some numerical examples based on the data of the Shanghai Stock Exchange Market. Simulation results show that our proposed algorithm is able to obtain better diversity and more evenly distributed Pareto front than the other two algorithms and the proposed model can maintain quite well the diversity of portfolio. The purpose of this paper is to deal with portfolio problems in the weighted possibilistic mean-variance-skewness (MVS and possibilistic mean-variance-skewness-entropy (MVS-E frameworks with transaction cost and liquidity and to provide different Pareto-optimal investment strategies as diversified as possible for investors at a time, rather than one strategy for investors at a time.

  13. Portfolio-Associated Faculty: A Qualitative Analysis of Successful Behaviors from the Perspective of the Student

    Directory of Open Access Journals (Sweden)

    Jack Kopechek

    2016-01-01

    Full Text Available Purpose. While some aspects of what makes for an effective portfolio program are known, little is published about what students value in the faculty-student-portfolio relationship. Lack of student buy-in and faculty engagement can be significant challenges. The purpose of this study was to identify behaviors and types of engagement that students value in their relationships with portfolio-associated faculty. Methods. Medical students (174 participating in the Ohio State University College of Medicine Portfolio Program described behaviors observed in their portfolio-associated faculty in a survey completed at the end of the first year of their four-year program. Narrative responses were coded and categorized into themes, followed by member checking. Results. A total of 324 comments from 169 students were analyzed. Four themes were identified: (1 creating a supportive environment; (2 inspiring academic and professional growth; (3 investing time in students; and (4 providing advice and direction. Conclusions. The themes identified suggest that students value certain types of coaching and mentoring behaviors from their portfolio-associated faculty. The themes and their specific subcategories may be useful in making decisions regarding program development and guiding recruitment and training of these faculty coaches.

  14. Universal portfolios generated by Vandermonde generating matrix

    Science.gov (United States)

    Tan, Choon Peng; Yong, Say Loong

    2017-04-01

    A universal portfolio generated by the one-parameter symmetric positive definite Vandermonde matrix is studied. It is obtained by maximizing the scaled growth rate of the estimated daily wealth return and minimizing the Mahalanobis squared divergence of two portfolio vectors associated with the Vandermonde matrix. The parameter of the Vandermonde matrix is chosen so that the matrix is positive definite. The companion matrices of the three and five-dimensional generating matrices are evaluated to determine the portfolios. Three and five stock-data sets are selected from the local stock exchange in Malaysia and the empirical performance of the portfolios is presented. There is empirical evidence that the use of an appropriate generating Vandermonde matrix may increase the wealth of investors.

  15. Why do Individuals Use e-Portfolios?

    National Research Council Canada - National Science Library

    Mu-Yen Chen; Francis Mou-Te Chang; Chia-Chen Chen; Mu-Jung Huang; Jing-Wen Chen

    2012-01-01

    .... Based on the Technology Acceptance Model (TAM) and Information System Success Model (ISSM), this research investigates and analyzes the attitudes, degree of satisfaction and acceptance of e-Portfolio system users...

  16. Active Multifamily Portfolio-Property Level data

    Data.gov (United States)

    Department of Housing and Urban Development — Multifamily Portfolio datasets (section 8 contracts) - The information has been compiled from multiple data sources within FHA or its contractors. HUD oversees more...

  17. ROMANIAN INVESTORS PORTFOLIO. ONLINE VERSUS ASSISTED TRADING

    Directory of Open Access Journals (Sweden)

    Ioana Ancuţa IANCU

    2017-05-01

    Full Text Available One of the most important aspects in deciding to trade online, alone, without the help of a broker, is the portfolio profitability. In this study, using the personal experience, survey data and secondary sources, we identify some factors that may influence the gain and the loss of investors which trade online. Our study contradicts other results from literature that claim that the transition from assisted to online trading is a big drawback in terms of portfolio profitability. By analyzing the performance of the portfolio when passing from assisted to online trading, we observe that half of the investors achieved identical profitability. We also observed that the efficiency of the portfolios belonging to the online investors that were assisted in the past by a broker for a short period, is lower compared to the ones assisted (in the past for a longer period.

  18. Understanding the multifractality in portfolio excess returns

    Science.gov (United States)

    Chen, Cheng; Wang, Yudong

    2017-01-01

    The multifractality in stock returns have been investigated extensively. However, whether the autocorrelations in portfolio returns are multifractal have not been considered in the literature. In this paper, we detect multifractal behavior of returns of portfolios constructed based on two popular trading rules, size and book-to-market (BM) ratio. Using the multifractal detrended fluctuation analysis, we find that the portfolio returns are significantly multifractal and the multifractality is mainly attributed to long-range dependence. We also investigate the multifractal cross-correlation between portfolio return and market average return using the detrended cross-correlation analysis. Our results show that the cross-correlations of small fluctuations are persistent, while those of large fluctuations are anti-persistent.

  19. Original article Portfolio working – a psychological analysis of the phenomenon

    Directory of Open Access Journals (Sweden)

    Agnieszka Lipińska-Grobelny

    2014-10-01

    Full Text Available Background It turns out from the latest Eurostat data that Poland holds the second place in Europe in terms of the number of so-called portfolio workers, i.e. persons who work for more than one employer. From the psychological point of view, there arises the question regarding the possible determinants of the mentioned phenomenon. Therefore the general purpose of this study is to present the personal and situational indicators of portfolio working. Participants and procedure Two hundred and eighteen portfolio workers and 218 workers employed in one workplace (i.e. monoworkers participated in research using the following set of ‘paper-pencil’ techniques: a self-made survey, the Value Scale by Rokeach, the Formal Characteristics of Behaviour – Temperament Questionnaire by Zawadzki and Strelau, the Masculinity and Femininity Scale by Lipińska-Grobelny and Gorczycka, and the Organizational Climate Questionnaire by Kolb. Results Portfolio working is mainly determined by a number of personal variables (temperamental characteristics, values and spheres of motivation, intensity of masculinity and femininity. A specific role is played by values represented by portfolio workers. The discriminant analysis conducted in groups selected on the basis of working hours indicates that the prediction of participation of the examined persons in the group of portfolio workers with the greatest accuracy appeared in the case of a workload of 48 or more hours, next in the case of a smaller workload up to 47 hours, and finally for the whole group. Conclusions The examination of the phenomenon of portfolio working from the psychological perspective presents an important contribution to the discussion on work and directions of its transformations.

  20. Playful Literacy

    DEFF Research Database (Denmark)

    Froes, Isabel

    2017-01-01

    these practices, which compose the taxonomy of tablet play. My contribution lies in identifying and proposing a series of theoretical concepts that complement recent theories related to play and digital literacy studies. The data collected through observations informed some noteworthy aspects, including how...... vocabulary in children’s digital play experiences. These early digital experiences set the rules for the playgrounds and assert digital tablets as twenty-first-century toys, shaping young children’s playful literacy....

  1. Equity Portfolio Management Using Option Price Information

    DEFF Research Database (Denmark)

    Christoffersen, Peter; Pan, Xuhui (Nick)

    We survey the recent academic literature that uses option-implied information to construct equity portfolios. Studies show that equity managers can earn a positive alpha by using information in individual equity options, by using stocks' exposure to information in market index options, and by using...... stocks' exposure to crude oil option information. Option-implied information can also help construct better mean-variance portfolios and better estimates of market beta....

  2. Project portfolio management: prioritising resources for change

    OpenAIRE

    Storey, Chris; Harborne, Paul

    2012-01-01

    While a number of studies have analysed portfolio management in goods firms, few have focused on the processes and practices within service firms. This research project investigated the attitudes, approach and practices geared towards project portfolio management (PPM) in UK-based financial service firms. An exploratory research approach is undertaken via in-depth interviews with key informants in 24 leading financial service companies. Data was also collected on the tools employed for PPM an...

  3. Portfolio Selection with Jumps under Regime Switching

    Directory of Open Access Journals (Sweden)

    Lin Zhao

    2010-01-01

    Full Text Available We investigate a continuous-time version of the mean-variance portfolio selection model with jumps under regime switching. The portfolio selection is proposed and analyzed for a market consisting of one bank account and multiple stocks. The random regime switching is assumed to be independent of the underlying Brownian motion and jump processes. A Markov chain modulated diffusion formulation is employed to model the problem.

  4. Student ePortfolios to develop reflective skills and demonstrate competency development: Evaluation of a curriculum pilot project.

    Science.gov (United States)

    Walton, J N; Gardner, K; Aleksejuniene, J

    2016-05-01

    The University of British Columbia Faculty of Dentistry developed a longitudinal curriculum pilot project to assess the usefulness of portfolios for dental students to develop reflective skills and demonstrate competency development, and to examine relationships between portfolio grades and clinical success. Students in one dental class created portfolios with reflections on examples relevant to eight selected competency statements each year of the program. As part of our program evaluation, we set out to look at trends in portfolio grades, meta-reflection skills, student and faculty views of the project, and relationships among portfolio grades, 4th year clinical grades and faculty rankings. Portfolio grades improved from years 1 to 3, dropping off slightly in year 4. The highest level of internal consistency for grades within and between years occurred with Competency 42, while the lowest level occurred with Competency 4. Most students were able to demonstrate meta-reflection by 4th year. Students generally agreed with portfolios and reflection in concept, but suggested a looser structure, and they shared concerns with faculty about the workload involved. Portfolio grades did not correlate with clinical course grades (P = 0.092), but they did correlate significantly with faculty rankings except for year 1. While portfolio grades for reflections were not consistent, and they did not quite correlate with clinical course grades, they correlated strongly with faculty rankings. Future use of portfolios at UBC Dentistry will be enhanced by increasing curricular support regarding both competency development and the importance of reflection for professionals, decreasing workload by focusing on five Key Competencies, incorporating more formative and face-to-face feedback, and providing greater opportunities for peer sharing.

  5. Innovation in ethics and professionalism course: Early experience with portfolio-workbook.

    Science.gov (United States)

    Shamim, Muhammad Shahid; Zubairi, Nadeem Alam; Sayed, Mohamad Hesham; Gazzaz, Zohair Jamil

    2016-09-01

    To analyse students' perception regarding the use of portfolio-workbook in ethics course. This mixed method study was conducted at the King Abdulaziz University, Jeddah, Saudi Arabia, in 2014, and comprised fourth-year medical students. The "portfolio-workbook", developed on principles of cognitive load and guided learning theories, contained essential reading material. Learning sessions were also facilitated by teaching tools like role-plays, movie/video clips, vignettes, etc., followed by reflective writing exercises. Feedback questionnaire with open- and closed-ended questions was used to collect data. Quantitative data was analysed for frequencies and percentages. Content analysis was conducted for the open-ended responses. Of the 20 participants, 10(50%) considered using portfolio-workbook as difficult initially. However, on completion of module 16(80%) found it easy. Moreover, 17(85%) appreciated it as a learning tool. Besides, 19(95%) students found teaching videos and 13(65%) found open discussions as effective learning tools. Portfolio-workbook as an assessment tool was preferred by 19(95%) students. The use of portfolio-workbook in teaching ethics to undergraduates was found to be encouraging as it generated interest and interaction.

  6. Diversification as a basis for creating an optimal portfolio

    Directory of Open Access Journals (Sweden)

    Ćerdić Ivan

    2015-01-01

    Full Text Available Diversification is a method by which we can successfully reduce total risk of created portfolio to the level of market risk, or even lower, depending on which model of diversification investor chooses. At the same time, this was the aim of this reseach - to prove that with properly developed and implemented diversification, portfolio risk can be reduced to the level of systematic risk. Analysing the different examples through this research, that was proven, primarily through the basic hypothesis, in the case od American company IBM and stock index S & P 500. Through the refutation of 1st derivated hypothesis - that diversification across industries can provide advantage over the simple diversification, it was concluded that even with a selection of securities of different sectors of indurstry, systematic risk can not be avoided. In favor of diversification speaks 2nd derivated hypothesis, by which is confirmed that the international diversification is the model of diversification which is the best proved in practice and which largely reduces the risk of created portfolio, even the level of systematic risk can be reduced thanks to investing in securities on the capital markets of different countries.

  7. Optimizing Eco-Efficiency Across the Procurement Portfolio.

    Science.gov (United States)

    Pelton, Rylie E O; Li, Mo; Smith, Timothy M; Lyon, Thomas P

    2016-06-07

    Manufacturing organizations' environmental impacts are often attributable to processes in the firm's upstream supply chain. Environmentally preferable procurement (EPP) and the establishment of environmental purchasing criteria can potentially reduce these indirect impacts. Life-cycle assessment (LCA) can help identify the purchasing criteria that are most effective in reducing environmental impacts. However, the high costs of LCA and the problems associated with the comparability of results have limited efforts to integrate procurement performance with quantitative organizational environmental performance targets. Moreover, environmental purchasing criteria, when implemented, are often established on a product-by-product basis without consideration of other products in the procurement portfolio. We develop an approach that utilizes streamlined LCA methods, together with linear programming, to determine optimal portfolios of product impact-reduction opportunities under budget constraints. The approach is illustrated through a simulated breakfast cereal manufacturing firm procuring grain, containerboard boxes, plastic packaging, electricity, and industrial cleaning solutions. Results suggest that extending EPP decisions and resources to the portfolio level, recently made feasible through the methods illustrated herein, can provide substantially greater CO2e and water-depletion reductions per dollar spend than a product-by-product approach, creating opportunities for procurement organizations to participate in firm-wide environmental impact reduction targets.

  8. Flightdeck Automation Problems (FLAP) Model for Safety Technology Portfolio Assessment

    Science.gov (United States)

    Ancel, Ersin; Shih, Ann T.

    2014-01-01

    NASA's Aviation Safety Program (AvSP) develops and advances methodologies and technologies to improve air transportation safety. The Safety Analysis and Integration Team (SAIT) conducts a safety technology portfolio assessment (PA) to analyze the program content, to examine the benefits and risks of products with respect to program goals, and to support programmatic decision making. The PA process includes systematic identification of current and future safety risks as well as tracking several quantitative and qualitative metrics to ensure the program goals are addressing prominent safety risks accurately and effectively. One of the metrics within the PA process involves using quantitative aviation safety models to gauge the impact of the safety products. This paper demonstrates the role of aviation safety modeling by providing model outputs and evaluating a sample of portfolio elements using the Flightdeck Automation Problems (FLAP) model. The model enables not only ranking of the quantitative relative risk reduction impact of all portfolio elements, but also highlighting the areas with high potential impact via sensitivity and gap analyses in support of the program office. Although the model outputs are preliminary and products are notional, the process shown in this paper is essential to a comprehensive PA of NASA's safety products in the current program and future programs/projects.

  9. Development of the Electronic Portfolio Student Perspective Instrument: An ePortfolio Integration Initiative

    Science.gov (United States)

    Ritzhaupt, Albert Dieter; Singh, Oma; Seyferth, Thelma; Dedrick, Robert F.

    2008-01-01

    With the proliferation of eportfolios and their organizational uses in higher education, it is important for educators and other relevant stakeholders to understand the student perspective. The way students view and use ePortfolios are revealing elements to aid educators in the successful integration of ePortfolio systems. This research describes…

  10. Validity of the Learning Portfolio: Analysis of a Portfolio Proposal for the University

    Science.gov (United States)

    Gregori-Giralt, Eva; Menéndez-Varela, José Luis

    2015-01-01

    Validity is a central issue in portfolio-based assessment. This empirical study used a quantitative approach to analyse the validity of the inferences drawn from a disciplinary course work portfolio assessment comprising profession-specific and learning competencies. The study also examined the problems involved in the development of the…

  11. Learning Through Play

    Science.gov (United States)

    ... to play to develop physical coordination, emotional maturity, social skills to interact with other children, and self-confidence ... role playing and provides an opportunity to rehearse social skills. • Choose toys that are appropriate to the child’s ...

  12. Aesthetic Play

    DEFF Research Database (Denmark)

    Bang, Jytte Susanne

    2012-01-01

    The present article explores the role of music-related artefacts and technologies in children’s lives. More specifically, it analyzes how four 10- to 11-year old girls use CDs and DVD games in their music-play activities and which developmental themes and potentials may accrue from such activities...... of, among others, Marx Wartofsky’s artefact theory, the article tries to get beyond “black-or-white” prejudices concerning technologies and their limited insight; this is done by suggesting to focus on the children’s own perspectives and how music-play activities may be meaningful in relation...... to the children’s complex life-worlds. Further, this leads to an analysis of music-play activities as play with an art-form (music), which includes aesthetic dimensions and gives the music-play activities its character of being aesthetic play. Following Lev Vygotsky’s insight that art is a way of building life...

  13. FIRE and Diversified International Portfolio

    Science.gov (United States)

    Meade, Dale

    2002-11-01

    The achievement of an attractive fusion energy using magnetic confinement requires significant advances in several key areas of plasma physics and technology including: self-heated plasmas in advanced configurations, steady-state plasma confinement of high-b plasmas, plasma wall interactions at high power density and the associated plasma and nuclear technologies. A diversified international portfolio is described that would allow the early resolution of key feasibility issues for fusion. FIRE, a national design study of a next step experiment is underway to develop and assess near term opportunities for addressing the burning plasma physics issues identified above. The emphasis is on exploring and understanding the behavior of plasmas dominated by self-heating (Palpha/Pext 2) that are sustained for a duration comparable to characteristic plasma time scales (>= 10τ_E, ˜ τ_SKIN . The study has focused on a compact, high-field, cryogenic-copper-magnet, highly-shaped tokamak with the parameters: Ro = 2.14m, a= 0.595m, double-null-divertor with helium pumping, Bt(Ro) = 10 T, and Ip = 7.7 MA and flat top time 20 s ( 20 τE and 2 τ_SKIN). The results of the study (http://fire.pppl.gov) including advanced tokamak modes and areas needing additional work will be discussed. Work supported by DOE Contract # DE-AC02-76CH0 3073.

  14. Mediatized play

    DEFF Research Database (Denmark)

    Johansen, Stine Liv

    Children’s play must nowadays be understood as a mediatized field in society and culture. Media – understood in a very broad sense - holds severe explanatory power in describing and understanding the practice of play, since play happens both with, through and inspired by media of different sorts........ In this presentation the case of ‘playing soccer’ will be outlined through its different mediated manifestations, including soccer games and programs on TV, computer games, magazines, books, YouTube videos and soccer trading cards....

  15. Playful Interaction

    DEFF Research Database (Denmark)

    2003-01-01

    The video Playful Interaction describes a future architectural office, and envisions ideas and concepts for playful interactions between people, materials and appliances in a pervasive and augmented working environment. The video both describes existing developments, technologies and designs...... as well as ideas not yet implemented such as playful modes of interaction with an augmented ball. Playful Interaction has been used as a hybrid of a vision video and a video prototype (1). Externally the video has been used to visualising our new ideas, and internally the video has also worked to inspire...

  16. Playful Membership

    DEFF Research Database (Denmark)

    Åkerstrøm Andersen, Niels; Pors, Justine Grønbæk

    2014-01-01

    This article studies the implications of current attempts by organizations to adapt to a world of constant change by introducing the notion of playful organizational membership. To this end we conduct a brief semantic history of organizational play and argue that when organizations play, employees...... desire to reach out - not just to the future - but to futures beyond the future presently imaginable. The article concludes that playful membership is membership through which employees are expected to develop a surplus of potential identities and continuously cross boundaries between real and virtual...

  17. Play Practices and Play Moods

    DEFF Research Database (Denmark)

    Karoff, Helle Skovbjerg

    2013-01-01

    The aim of this article is to develop a view of play as a relation between play practices and play moods based on an empirical study of children's everyday life and by using Bateson's term of ‘framing’ [(1955/2001). In Steps to an ecology of mind (pp. 75–80). Chicago: University of Chicago Press......], Schmidt's notion of ‘commonness’ [(2005). Om respekten. København: Danmarks Pædagogiske Universitets Forlag; (2011). On respect. Copenhagen: Danish School of Education University Press] and Heidegger's term ‘mood’ [(1938/1996). Time and being. Cornwall: Wiley-Blackwell.]. Play mood is a state of being...... in which we are open and ready, both to others and their production of meaning and to new opportunities for producing meaning. This play mood is created when we engage with the world during play practices. The article points out four types of play moods – devotion, intensity, tension and euphorica – which...

  18. Gaming Change: A Many-objective Analysis of Water Supply Portfolios under Uncertainty

    Science.gov (United States)

    Reed, P. M.; Kasprzyk, J.; Characklis, G.; Kirsch, B.

    2008-12-01

    This study explores the uncertainty and tradeoffs associated with up to six conflicting water supply portfolio planning objectives. A ten-year Monte Carlo simulation model is used to evaluate water supply portfolios blending permanent rights, adaptive options contracts, and spot leases for a single city in the Lower Rio Grande Valley. Historical records of reservoir mass balance, lease pricing, and demand serve as the source data for the Monte Carlo simulation. Portfolio planning decisions include the initial volume and annual increases of permanent rights, thresholds for an adaptive options contract, and anticipatory decision rules for purchasing leases and exercising options. Our work distinguishes three cases: (1) permanent rights as the sole source of supply, (2) permanent rights and adaptive options, and (3) a combination of permanent rights, adaptive options, and leases. The problems have been formulated such that cases 1 and 2 are sub-spaces of the six objective formulation used for case 3. Our solution sets provide the tradeoff surfaces between portfolios' expected values for cost, cost variability, reliability, frequency of purchasing permanent rights increases, frequency of using leases, and dropped (or unused) transfers of water. The tradeoff surfaces for the three cases show that options and leases have a dramatic impact on the marginal costs associated with improving the efficiency and reliability of urban water supplies. Moreover, our many-objective analysis permits the discovery of a broad range of high quality portfolio strategies. We differentiate the value of adaptive options versus leases by testing a representative subset of optimal portfolios' abilities to effectively address regional increases in demand during drought periods. These results provide insights into the tradeoffs inherent to a more flexible, portfolio-style approach to urban water resources management, an approach that should become increasingly attractive in an environment of

  19. Playful Organizations

    DEFF Research Database (Denmark)

    Pors, Justine Grønbæk; Åkerstrøm Andersen, Niels

    2015-01-01

    This article explores how organisational play becomes a managerial tool to increase and benefit from undecidability. The article draws on Niklas Luhmann's concept of decision and on Gregory Bateson's theory of play to create a conceptual framework for analysing the relation between decision...

  20. Portfolios Enhance Clinical Activity in Surgical Clerks.

    Science.gov (United States)

    Zundel, Sabine; Blumenstock, Gunnar; Zipfel, Stephan; Herrmann-Werner, Anne; Holderried, Friederike

    2015-01-01

    A change in German licensing legislation imposed a portfolio for surgical clerks. We aimed to analyze whether the implementation of the portfolio changed the amount of clinical exposure and activities during surgical clerkships. The study was conducted with a modified pre-post design at the University Hospital of Tuebingen, Germany. Before and after the implementation of the portfolio on April 1, 2013, final-year students (n = 557) who had just finished their surgical clerkship were interviewed with an online questionnaire. A total of 21 basic surgical skills were evaluated. Overall, 230 questionnaires were returned and analyzed; 51% were preintervention. Overall clinical activity for the whole study cohort varied for different activities between 98% and 32%. For 16 of 21 parameters, there was more clinical activity in the postintervention (portfolio) group. This difference was statistically significant for the following 7 activities: discharge, analgesia, local infiltration, patient positioning, drain in, blood transfusion, and emergency diagnostics. The implementation of the portfolio did enhance clinical activity for surgical clerks in the study cohort. Nevertheless, overall exposure is still unsatisfactory low for some activities. Additional changes and studies are necessary to further improve surgical education. Copyright © 2015 Association of Program Directors in Surgery. Published by Elsevier Inc. All rights reserved.

  1. Engagement with Electronic Portfolios: Challenges from the Student Perspective

    National Research Council Canada - National Science Library

    Tosh, David; Light, Tracy Penny; Fleming, Kele; Haywood, Jeff

    2005-01-01

    Much of the evidence and research available on the use of e-portfolios focuses on faculty and institutional perspectives and/or consists mainly of anecdotes about how useful the e-portfolio has been to...

  2. Minimum Variance Portfolios in the Brazilian Equity Market

    Directory of Open Access Journals (Sweden)

    Alexandre Rubesam

    2013-03-01

    Full Text Available We investigate minimum variance portfolios in the Brazilian equity market using different methods to estimate the covariance matrix, from the simple model of using the sample covariance to multivariate GARCH models. We compare the performance of the minimum variance portfolios to those of the following benchmarks: (i the IBOVESPA equity index, (ii an equally-weighted portfolio, (iii the maximum Sharpe ratio portfolio and (iv the maximum growth portfolio. Our results show that the minimum variance portfolio has higher returns with lower risk compared to the benchmarks. We also consider long-short 130/30 minimum variance portfolios and obtain similar results. The minimum variance portfolio invests in relatively few stocks with low βs measured with respect to the IBOVESPA index, being easily replicable by individual and institutional investors alike.

  3. Constant Proportion Portfolio Insurance Strategy in Southeast European Markets

    National Research Council Canada - National Science Library

    Elma Agić-Šabeta

    2016-01-01

    .... A special attention is given to modelling non-risky assets of the portfolio. Monte Carlo simulations are used to test the buy-and-hold, the constant-mix, and the constant proportion portfolio insurance (CPPI...

  4. Effect of portfolio assessment on student learning in prenatal training for midwives

    Science.gov (United States)

    Moafi, Farnoosh

    2011-01-01

    The tendency to use portfolios for evaluation has been developed with the aim of optimizing the culture of assessment. The present study was carried out to determine the effect of using portfolios as an evaluation method on midwifery students' learning and satisfaction in prenatal practical training. In this prospective cohort study, all midwifery students in semester four (n=40), were randomly allocated to portfolio and routine evaluation groups. Based on their educational goals, the portfolio groups prepared packages which consisted of a complete report of the history, physical examinations, and methods of patient management (as evaluated by a checklist) for women who visited a prenatal clinic. During the last day of their course, a posttest, clinical exam, and student satisfaction form were completed. The two groups' mean age, mean pretest scores, and their prerequisite course that they should have taken in the previous semester were similar. The mean difference in the pre and post test scores for the two groups' knowledge and comprehension levels did not differ significantly (P>0.05). The average scores on questions in Bloom's taxonomy 2 and 3 of the portfolio group were significantly greater than those of the routine evaluation group (P=0.002, P=0.03, respectively). The mean of the two groups' clinical exam scores was significantly different. The portfolio group's mean scores on generating diagnostic and therapeutic solutions and the ability to apply theory in practice were higher than those of the routine group. Overall, students' satisfaction scores in the two evaluation methods were relatively similar. Portfolio evaluation provides the opportunity for more learning by increasing the student's participation in the learning process and helping them to apply theory in practice. PMID:21602913

  5. Effect of portfolio assessment on student learning in prenatal training for midwives.

    Science.gov (United States)

    Kariman, Nourossadat; Moafi, Farnoosh

    2011-01-01

    The tendency to use portfolios for evaluation has been developed with the aim of optimizing the culture of assessment. The present study was carried out to determine the effect of using portfolios as an evaluation method on midwifery students' learning and satisfaction in prenatal practical training. In this prospective cohort study, all midwifery students in semester four (n=40), were randomly allocated to portfolio and routine evaluation groups. Based on their educational goals, the portfolio groups prepared packages which consisted of a complete report of the history, physical examinations, and methods of patient management (as evaluated by a checklist) for women who visited a prenatal clinic. During the last day of their course, a posttest, clinical exam, and student satisfaction form were completed. The two groups' mean age, mean pretest scores, and their prerequisite course that they should have taken in the previous semester were similar. The mean difference in the pre and post test scores for the two groups' knowledge and comprehension levels did not differ significantly (P>0.05). The average scores on questions in Bloom's taxonomy 2 and 3 of the portfolio group were significantly greater than those of the routine evaluation group (P=0.002, P=0.03, respectively). The mean of the two groups' clinical exam scores was significantly different. The portfolio group's mean scores on generating diagnostic and therapeutic solutions and the ability to apply theory in practice were higher than those of the routine group. Overall, students' satisfaction scores in the two evaluation methods were relatively similar. Portfolio evaluation provides the opportunity for more learning by increasing the student's participation in the learning process and helping them to apply theory in practice.

  6. Effect of portfolio assessment on student learning in prenatal training for midwives

    Directory of Open Access Journals (Sweden)

    Nourossadat Kariman

    2011-03-01

    Full Text Available The tendency to use portfolios for evaluation has been developed with the aim of optimizing the culture of assessment. The present study was carried out to determine the effect of using portfolios as an evaluation method on midwifery students’ learning and satisfaction in prenatal practical training. In this prospective cohort study, all midwifery students in semester four (n=40, were randomly allocated to portfolio and routine evaluation groups. Based on their educational goals, the portfolio groups prepared packages which consisted of a complete report of the history, physical examinations, and methods of patient management (as evaluated by a checklist for women who visited a prenatal clinic. During the last day of their course, a posttest, clinical exam, and student satisfaction form were completed. The two groups’ mean age, mean pretest scores, and their prerequisite course that they should have taken in the previous semester were similar. The mean difference in the pre and post test scores for the two groups’ knowledge and comprehension levels did not differ significantly (P>0.05. The average scores on questions in Bloom’s taxonomy 2 and 3 of the portfolio group were significantly greater than those of the routine evaluation group (P=0.002, P=0.03, respectively. The mean of the two groups’ clinical exam scores was significantly different. The portfolio group’s mean scores on generating diagnostic and therapeutic solutions and the ability to apply theory in practice were higher than those of the routine group. Overall, students’ satisfaction scores in the two evaluation methods were relatively similar. Portfolio evaluation provides the opportunity for more learning by increasing the student’s participation in the learning process and helping them to apply theory in practice.

  7. Effect of portfolio assessment on student learning in prenatal training for midwives

    Directory of Open Access Journals (Sweden)

    Nourossadat Kariman

    2011-03-01

    Full Text Available The tendency to use portfolios for evaluation has been developed with the aim of optimizing the culture of assessment. The present study was carried out to determine the effect of using portfolios as an evaluation method on midwifery students??learning and satisfaction in prenatal practical training. In this prospective cohort study, all midwifery students in semester four (n=40, were randomly allocated to portfolio and routine evaluation groups. Based on their educational goals, the portfolio groups prepared packages which consisted of a complete report of the history, physical examinations, and methods of patient management (as evaluated by a checklist for women who visited a prenatal clinic. During the last day of their course, a posttest, clinical exam, and student satisfaction form were completed. The two groups??mean age, mean pretest scores, and their prerequisite course that they should have taken in the previous semester were similar. The mean difference in the pre and post test scores for the two groups??knowledge and comprehension levels did not differ significantly (P>0.05. The average scores on questions in Bloom?占퐏 taxonomy 2 and 3 of the portfolio group were significantly greater than those of the routine evaluation group (P=0.002, P=0.03, respectively. The mean of the two groups??clinical exam scores was significantly different. The portfolio group?占퐏 mean scores on generating diagnostic and therapeutic solutions and the ability to apply theory in practice were higher than those of the routine group. Overall, students??satisfaction scores in the two evaluation methods were relatively similar. Portfolio evaluation provides the opportunity for more learning by increasing the student?占퐏 participation in the learning process and helping them to apply theory in practice.

  8. Tutor Response to Implementing an ePortfolio to Support Learning and Personal Development in Further and Higher Education Institutions in Scotland

    Science.gov (United States)

    Peacock, Susi; Gordon, Lisi; Murray, Sue; Morss, Kate; Dunlop, Gloria

    2010-01-01

    Emergent research indicates that electronic portfolios (ePortfolios) can have a positive impact on the learning experience, but there are significant challenges--pedagogical and technological--which may limit their effectiveness. This paper contributes to research by providing further evidence about such challenges from the tutor perspective and…

  9. Designing social play through interpersonal touch

    DEFF Research Database (Denmark)

    Padfield, Nicolas; Löwgren, Jonas; Hobye, Mads

    2013-01-01

    We present five design cases as an annotated portfolio, exploring ways to design for intimate, interpersonal touch and social intimacy in interaction design. Five key qualities are elicited from the cases, including novel connotations sparking curiosity; providing an excuse to interact; unfolding...

  10. (Steering) interactive play behavior

    NARCIS (Netherlands)

    van Delden, Robertus Wilhelmus

    2017-01-01

    Play is a powerful means to have an impact on the cognitive, social-emotional, and/or motor skills development. The introduction of technology brings new possibilities to provide engaging and entertaining whole-body play activities. Technology mediates the play activities and in this way changes how

  11. Robust Portfolio Optimization using CAPM Approach

    Directory of Open Access Journals (Sweden)

    mohsen gharakhani

    2013-08-01

    Full Text Available In this paper, a new robust model of multi-period portfolio problem has been developed. One of the key concerns in any asset allocation problem is how to cope with uncertainty about future returns. There are some approaches in the literature for this purpose including stochastic programming and robust optimization. Applying these techniques to multi-period portfolio problem may increase the problem size in a way that the resulting model is intractable. In this paper, a novel approach has been proposed to formulate multi-period portfolio problem as an uncertain linear program assuming that asset return follows the single-index factor model. Robust optimization technique has been also used to solve the problem. In order to evaluate the performance of the proposed model, a numerical example has been applied using simulated data.

  12. Improving Student's Writing through Portfolio Assessment

    Directory of Open Access Journals (Sweden)

    Sri Widayati

    2016-02-01

    Full Text Available This study aims at improving student's writing in terms of content, organization, and language use through the implementation of portfolio assessment. This classroom action research is descriptive qualitative in nature and was conducted in only one cycle consisting of four stages of activities. Twenty-six students taking Writing II course were taken as the subject and the main data was the paragraphs the students wrote throughout the semester. The instruments of data collection include rubric, self-reflection sheet, field notes, and questionnaire. The results show that portfolio assessment has increased the quality of students' writing as indicated by the difference between the scores they achieved for the pre-test and post-test, and by the rise of scores they achieved for the three paragraphs the students selected to be included in the portfolio

  13. A Bicriteria Approach Identifying Nondominated Portfolios

    Directory of Open Access Journals (Sweden)

    Javier Pereira

    2014-01-01

    Full Text Available We explore a portfolio constructive model, formulated in terms of satisfaction of a given set of technical requirements, with the minimum number of projects and minimum redundancy. An algorithm issued from robust portfolio modeling is adapted to a vector model, modifying the dominance condition as convenient, in order to find the set of nondominated portfolios, as solutions of a bicriteria integer linear programming problem. In order to improve the former algorithm, a process finding an optimal solution of a monocriteria version of this problem is proposed, which is further used as a first feasible solution aiding to find nondominated solutions more rapidly. Next, a sorting process is applied on the input data or information matrix, which is intended to prune nonfeasible solutions early in the constructive algorithm. Numerical examples show that the optimization and sorting processes both improve computational efficiency of the original algorithm. Their limits are also shown on certain complex instances.

  14. Markowitz portfolio optimization model employing fuzzy measure

    Science.gov (United States)

    Ramli, Suhailywati; Jaaman, Saiful Hafizah

    2017-04-01

    Markowitz in 1952 introduced the mean-variance methodology for the portfolio selection problems. His pioneering research has shaped the portfolio risk-return model and become one of the most important research fields in modern finance. This paper extends the classical Markowitz's mean-variance portfolio selection model applying the fuzzy measure to determine the risk and return. In this paper, we apply the original mean-variance model as a benchmark, fuzzy mean-variance model with fuzzy return and the model with return are modeled by specific types of fuzzy number for comparison. The model with fuzzy approach gives better performance as compared to the mean-variance approach. The numerical examples are included to illustrate these models by employing Malaysian share market data.

  15. Natural gas contracts in efficient portfolios

    Energy Technology Data Exchange (ETDEWEB)

    Sutherland, R.J.

    1994-12-01

    This report addresses the {open_quotes}contracts portfolio{close_quotes} issue of natural gas contracts in support of the Domestic Natural Gas and Oil Initiative (DGOI) published by the U.S. Department of Energy in 1994. The analysis is a result of a collaborative effort with the Public Service Commission of the State of Maryland to consider {open_quotes}reforms that enhance the industry`s competitiveness{close_quotes}. The initial focus of our collaborative effort was on gas purchasing and contract portfolios; however, it became apparent that efficient contracting to purchase and use gas requires a broader consideration of regulatory reform. Efficient portfolios are obtained when the holder of the portfolio is affected by and is responsible for the performance of the portfolio. Natural gas distribution companies may prefer a diversity of contracts, but the efficient use of gas requires that the local distribution company be held accountable for its own purchases. Ultimate customers are affected by their own portfolios, which they manage efficiently by making their own choices. The objectives of the DGOI, particularly the efficient use of gas, can be achieved when customers have access to suppliers of gas and energy services under an improved regulatory framework. The evolution of the natural gas market during the last 15 years is described to account for the changing preferences toward gas contracts. Long-term contracts for natural gas were prevalent before the early 1980s, primarily because gas producers had few options other than to sell to a single pipeline company, and this pipeline company, in turn, was the only seller to a gas distribution company.

  16. [Portfolio in nursing school: myth or reality].

    Science.gov (United States)

    Garnier, Chantal; Marchand, Claire

    2012-09-01

    The portfolio is a new tool that has been introduced for the setting up of a new program concerning the nurse training. It aims at the would-be nurse to improve their self-reliance and make them assess themselves through a critical and reflexive approach. Indeed, the portfolio is mostly made up of sheets that the student has to fill in when describing and analysing several professional conditions. This study is about the assessment of the relevance in the portfolio that each nurse student owns in order to make them improve their reflexive practical. The work will, thus, suggest different ways of thinking and improving the use of the tool. 30 portfolios were chosen randomly among the 2nd year students, because 180 analysis were assessed thanks to a grid. 10 viewpoints from volunteer students were gathered after several semi directive interviews. The qualitative and evaluative analysis shows that the students develop the reflexive practical throughout their trainings. It seems, indeed, relevant to choose the portfolio in order to help the students to develop this way of working. According to them, there are several positive points such as the distance towards an event, an awareness-raising of the acquisition, feedbacks about the quality of the text by the trainer and an ability to assess oneself. Yet, even though it was created 18 months ago, there are some limits such as the too short period of mentoring and feedback, the lack of time for the students to write their analysis, the fact that it is not a practical tool, and the unclear description of assessment criteria. In order to fulfil the needs, some solutions are to be found. The portfolio is clearly helpful for the students who wish to increase/improve gradually their reflexive practice. Thus, the trainer's role is crucial, when he is a supervisor.

  17. Validity of portfolio assessment: which qualities determine ratings?

    NARCIS (Netherlands)

    Driessen, E.W.; Overeem, K.; Tartwijk, J. van; Vleuten, C.P.M. van der; Muijtjens, A.M.M.

    2006-01-01

    The portfolio is becoming increasingly accepted as a valuable tool for learning and assessment. The validity of portfolio assessment, however, may suffer from bias due to irrelevant qualities, such as lay-out and writing style. We examined the possible effects of such qualities in a portfolio

  18. Selection of a portfolio of R & D projects

    NARCIS (Netherlands)

    Casault, Sébastien; Groen, Arend J.; Linton, J.D.; Linton, Jonathan; Link, A.N.; Vonortas, N.S.

    2013-01-01

    While portfolios of research are increasingly discussed, a portfolio perspective is infrequently taken when selecting two or more projects. Consequently, this chapter considers the current state of knowledge in project and portfolio selection, identifies why we can and cannot apply knowledge from

  19. Engagement with Electronic Portfolios: Challenges from the Student Perspective

    Science.gov (United States)

    Tosh, David; Light, Tracy Penny; Fleming, Kele; Haywood, Jeff

    2005-01-01

    Much of the evidence and research available on the use of e-portfolios focuses on faculty and institutional perspectives and/or consists mainly of anecdotes about how useful the e-portfolio has been to learners. While it is generally agreed that e­-portfolios have great potential to engage students and promote deep learning, the research that has…

  20. E-Portfolio for Enhancing Graduate Research Supervision

    Science.gov (United States)

    Le, Quynh

    2012-01-01

    Purpose: E-Portfolio is a powerful tool for demonstrating evidence of learning and achievements in graduate research. The purpose of this paper is to examine the concept, structure and functions of e-Portfolio in graduate research and discuss the significance of the role of e-Portfolio in enhancing the quality of graduate research students and…

  1. Using an analogy in the introduction of a portfolio

    NARCIS (Netherlands)

    van Tartwijk, Jan; van Rijswijk, Martine; Tuithof, Hanneke; Driessen, Erik W.

    2008-01-01

    Students in many teacher education programmes experience confusion about portfolios. This study investigated whether using an analogy in the introduction of a portfolio helps teacher education students understand both the purpose of a portfolio and how to compile it. It was also investigated whether

  2. Evaluating, Comparing, and Best Practice in Electronic Portfolio System Use

    Science.gov (United States)

    San Jose, David L.

    2017-01-01

    Electronic portfolios (e-portfolios) are commonly positioned to show evidence of student learning with formative and summative assessment benefits. At the University of Auckland teacher education program, two e-portfolio systems were adopted to document preservice teacher's course work and to attest to the Graduating Teacher Standards. This…

  3. Asset Attribution Stability and Portfolio Construction: An Educational Example

    Science.gov (United States)

    Chong, James T.; Jennings, William P.; Phillips, G. Michael

    2014-01-01

    This paper illustrates how a third statistic from asset pricing models, the R-squared statistic, may have information that can help in portfolio construction. Using a traditional CAPM model in comparison to an 18-factor Arbitrage Pricing Style Model, a portfolio separation test is conducted. Portfolio returns and risk metrics are compared using…

  4. E-Portfolios for Reflective Practice, Advocacy, and Professional Growth

    Science.gov (United States)

    Keller, Cynthia

    2013-01-01

    An e-portfolio is an organized collection of professional work (artifacts), selected and reflected upon by the author, that represents a person's best efforts. Over time, an e-portfolio will reflect professional changes and growth. This article discusses some of the reasons for a school librarian to create an e-portfolio. Before creating an…

  5. Sponsorship portfolio as a brand-image creation strategy

    National Research Council Canada - National Science Library

    Chien, P. Monica; Cornwell, T. Bettina; Pappu, Ravi

    2011-01-01

    ... sponsorship portfolio on its brand image. A sponsorship portfolio is the collection of brand and/or company sponsorships comprising sequential and/or simultaneous involvement with events, activities and individuals (usually in sport, art and charity) utilized to communicate with various audiences. In most cases, a brand's sponsorship portfolio inc...

  6. Guidelines for Good Evaluation Practice with the ACUMEN portfolio

    DEFF Research Database (Denmark)

    Wildgaard, Lorna Elizabeth

    2014-01-01

    This document gives guidelines for using the ACUMEN Portfolio to evaluate academic researchers. The ACUMEN Portfolio is a way for Portfolio owners to highlight their achievements and to present themselves in the most positive way. It supplements the traditional CV because it highlights key...

  7. Mentoring portfolio use in undergraduate and postgraduate medical education

    NARCIS (Netherlands)

    Dekker, Hanke; Driessen, Erik; Ter Braak, Edith; Scheele, Fedde; Slaets, Joris; Van Der Molen, Thys; Cohen-Schotanus, Janke

    2009-01-01

    Aim: Mentoring is widely acknowledged as being crucial for portfolio learning. The aim of this study is to examine how mentoring portfolio use has been implemented in undergraduate and postgraduate settings. Method: The results of interviews with six key persons involved in setting up portfolio use

  8. Toward a general model of portfolio decision making

    NARCIS (Netherlands)

    Kester, L.; Griffin, A.; Hultink, E.J.; Lauche, K.

    2009-01-01

    We develop a general model of how new product development portfolio decisions are made based on four diverse case studies. Previous research has investigated portfolio decisions as individually discrete decisions. We find that portfolio decision-making has to be considered as an integrated system of

  9. The Effect of Mobile Portfolio (M-Portfolio) Supported Mastery Learning Model on Students' Achievement and Their Attitudes towards Using Internet

    Science.gov (United States)

    Ozdemir, Oguzhan; Erdemci, Husamettin

    2017-01-01

    The term mobile portfolio refers to creating, evaluating and sharing portfolios in mobile environments. Many of the states that pose an obstacle for portfolio usage are now extinguished through mobile portfolios. The aim in this research is to determine the effect of mobile portfolio supported mastery learning model on students' success and…

  10. Why do Dolphins Play?

    OpenAIRE

    Stan A. Kuczaj; Holli C. Eskelinen

    2014-01-01

    Play is an important aspect of dolphin life, perhaps even an essential one. Play provides opportunities for dolphin calves to practice and perfect locomotor skills, including those involved in foraging and mating strategies and behaviors. Play also allows dolphin calves to learn important social skills and acquire information about the characteristics and predispositions of members of their social group, particularly their peers. In addition to helping dolphin calves learn how to behave, play...

  11. Optimal Portfolio Choice with Wash Sale Constraints

    DEFF Research Database (Denmark)

    Astrup Jensen, Bjarne; Marekwica, Marcel

    2011-01-01

    is to a large extent driven by the desire to realize those losses, either immediately by sharply decreasing the holding of assets carrying unrealized losses, or indirectly by increasing such holdings in order to prepare for a decrease in a future period to earn the tax rebate payment. Our findings are robust......We analytically solve the portfolio choice problem in the presence of wash sale constraints in a two-period model with one risky asset. Our results show that wash sale constraints can heavily affect portfolio choice of investors with unrealized losses. The trading behavior of such investors...

  12. Electricity Market Optimization of Heat Pump Portfolio

    DEFF Research Database (Denmark)

    Biegel, Benjamin; Andersen, Palle; Pedersen, Tom S.

    2013-01-01

    We consider a portfolio of domestic heat pumps controlled by an aggregator. The aggregator is able to adjust the consumption of the heat pumps without affecting the comfort in the houses and uses this ability to shift the main consumption to hours with low electricity prices. Further, the aggrega......We consider a portfolio of domestic heat pumps controlled by an aggregator. The aggregator is able to adjust the consumption of the heat pumps without affecting the comfort in the houses and uses this ability to shift the main consumption to hours with low electricity prices. Further...

  13. Your Teaching Portfolio: Strategies for Initiating and Documenting Growth and Development

    Science.gov (United States)

    Ouellett, Mathew L.

    2007-01-01

    An introduction to the concept of the teaching portfolio, this article provides several short- and long-term strategies related to documenting teaching-development efforts. In particular, it provides a persuasive rationale for why one should consider dedicating precious time and resources documenting teaching goals and development and how the…

  14. How banking sanctions influence on performance of foreign currency portfolio management

    Directory of Open Access Journals (Sweden)

    Mohammad Khodaei Valahzaghard

    2013-02-01

    Full Text Available A good portfolio optimization on banks’ currency holdings not only helps meet their needs but also it increases banks’ total assets. During the past few months, US sanctions against Iran has influenced profitability banking currency portfolio holding. The proposed model of this paper considers the weekly information of two years before and after sanctions occurred in Iranian banking system. Therefore, the study uses 210 weekly data and proposes a method to analyze the data to measure the performance of banking currency portfolio after sanction happens. The proposed model of this paper provides lost profit and unrealized loss and using the idea of Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS we rank the resulted data. Next, we use some parametric and non-parametric methods to see whether there is any change as a result of sanction on the performance of the portfolio. The results indicate that not only the performance of the portfolio was reduced but also the variance of the return after sanction has been increased.

  15. [Portfolios: a tool for the training and assessment of residents in dermatology, part 2].

    Science.gov (United States)

    Casanova, J M; Soria, X; Borrego, L; De Argila, D; Ribera, M; Pujol, R M

    2011-06-01

    A portfolio is a collection of material documenting reflection about practice. It contains documents (eg, case histories and questionnaires the resident has used), images, and video recordings that reveal that an individual has acquired the competencies needed for professional practice. This assessment tool simultaneously supports learning and provides evidence for certifying competence. The adoption of portfolio use by a dermatology department requires the support of both the training supervisor and the chief of department. The learning objectives defined by the National Board for Medical-Surgical Dermatology and Venereology must be taken into consideration so that ways to assess each objective can be included; this approach supports holistic ongoing education as well as the certification of competencies the resident finally achieves. Use of portfolios in medical residency training can improve on current assessment methods, which we believe lack precision. We propose that portfolios gradually begin to replace the resident's training log. We are currently developing an online software application that will facilitate the use of portfolios. 2010 Elsevier España, S.L. and AEDV. All rights reserved.

  16. Nonzero-Sum Stochastic Differential Portfolio Games under a Markovian Regime Switching Model

    Directory of Open Access Journals (Sweden)

    Chaoqun Ma

    2015-01-01

    Full Text Available We consider a nonzero-sum stochastic differential portfolio game problem in a continuous-time Markov regime switching environment when the price dynamics of the risky assets are governed by a Markov-modulated geometric Brownian motion (GBM. The market parameters, including the bank interest rate and the appreciation and volatility rates of the risky assets, switch over time according to a continuous-time Markov chain. We formulate the nonzero-sum stochastic differential portfolio game problem as two utility maximization problems of the sum process between two investors’ terminal wealth. We derive a pair of regime switching Hamilton-Jacobi-Bellman (HJB equations and two systems of coupled HJB equations at different regimes. We obtain explicit optimal portfolio strategies and Feynman-Kac representations of the two value functions. Furthermore, we solve the system of coupled HJB equations explicitly in a special case where there are only two states in the Markov chain. Finally we provide comparative statics and numerical simulation analysis of optimal portfolio strategies and investigate the impact of regime switching on optimal portfolio strategies.

  17. Playing facilitator

    DEFF Research Database (Denmark)

    Houmøller, Ellen; Marchetti, Emanuela

    2015-01-01

    t: This paper presents reflections on the role of teachers as facilitators, in a context of role-play targeting learning of design thinking skills. Our study was conducted according to the method of visual ethnography. We acted as facilitators for 50 students through the yearly six-day competitive...... event called InnoEvent, addressed to students in the fields of multimedia and healthcare. Being interested in studying games and role-play as tools to support independent learning in the field of design thinking and team-building, following Dewey’s (1938) theory of learning experience, we ran two...... workshops based on two classic role-play games: The Silent Game (Brandt, 2006) and The Six Thinking Hats (de Bono, 1985). These games were created to support students in learning design thinking in groups and are assigned positive values in literature, hence we expected a smooth process. However, our...

  18. Consumption-Portfolio Optimization with Recursive Utility in Incomplete Markets

    DEFF Research Database (Denmark)

    Kraft, Holger; Seifried, Frank Thomas; Steffensen, Mogens

    2013-01-01

    In an incomplete market, we study the optimal consumption-portfolio decision of an investor with recursive preferences of Epstein–Zin type. Applying a classical dynamic programming approach, we formulate the associated Hamilton–Jacobi–Bellman equation and provide a suitable verification theorem......–Zin preferences in an incomplete market for non-unit elasticity of intertemporal substitution (EIS) and apply our verification result to prove that they solve the consumption-investment problem. We also compare our exact solutions to the Campbell–Shiller approximation and assess its accuracy....

  19. Portfolio Selection Based on Distance between Fuzzy Variables

    Directory of Open Access Journals (Sweden)

    Weiyi Qian

    2014-01-01

    Full Text Available This paper researches portfolio selection problem in fuzzy environment. We introduce a new simple method in which the distance between fuzzy variables is used to measure the divergence of fuzzy investment return from a prior one. Firstly, two new mathematical models are proposed by expressing divergence as distance, investment return as expected value, and risk as variance and semivariance, respectively. Secondly, the crisp forms of the new models are also provided for different types of fuzzy variables. Finally, several numerical examples are given to illustrate the effectiveness of the proposed approach.

  20. Evaluation of the free, open source software WordPress as electronic portfolio system in undergraduate medical education.

    Science.gov (United States)

    Avila, Javier; Sostmann, Kai; Breckwoldt, Jan; Peters, Harm

    2016-06-03

    Electronic portfolios (ePortfolios) are used to document and support learning activities. E-portfolios with mobile capabilities allow even more flexibility. However, the development or acquisition of ePortfolio software is often costly, and at the same time, commercially available systems may not sufficiently fit the institution's needs. The aim of this study was to design and evaluate an ePortfolio system with mobile capabilities using a commercially free and open source software solution. We created an online ePortfolio environment using the blogging software WordPress based on reported capability features of such software by a qualitative weight and sum method. Technical implementation and usability were evaluated by 25 medical students during their clinical training by quantitative and qualitative means using online questionnaires and focus groups. The WordPress ePortfolio environment allowed students a broad spectrum of activities - often documented via mobile devices - like collection of multimedia evidences, posting reflections, messaging, web publishing, ePortfolio searches, collaborative learning, knowledge management in a content management system including a wiki and RSS feeds, and the use of aid tools for studying. The students' experience with WordPress revealed a few technical problems, and this report provides workarounds. The WordPress ePortfolio was rated positively by the students as a content management system (67 % of the students), for exchange with other students (74 %), as a note pad for reflections (53 %) and for its potential as an information source for assessment (48 %) and exchange with a mentor (68 %). On the negative side, 74 % of the students in this pilot study did not find it easy to get started with the system, and 63 % rated the ePortfolio as not being user-friendly. Qualitative analysis indicated a need for more introductory information and training. It is possible to build an advanced ePortfolio system with mobile

  1. Postphenomenological Play

    DEFF Research Database (Denmark)

    Hammar, Emil

    This paper aims to identify an understanding of digital games in virtual environments by using Don Ihde’s (1990) postphenomenological approach to how technology mediates the world to human beings in conjunction with Hans-Georg Gadamer’s (1993) notion of play . Through this tentatively proposed...... amalgamation of theories I point towards an alternative understanding of the relationship between play and game as not only dialectic, but also as socially and ethically relevant qua the design and implementation of the game as technology....

  2. MAJOR OIL PLAYS IN UTAH AND VICINITY

    Energy Technology Data Exchange (ETDEWEB)

    Thomas C. Chidsey; Craig D. Morgan; Kevin McClure; Grant C. Willis

    2003-09-01

    Utah oil fields have produced over 1.2 billion barrels (191 million m{sup 3}). However, the 13.7 million barrels (2.2 million m{sup 3}) of production in 2002 was the lowest level in over 40 years and continued the steady decline that began in the mid-1980s. The Utah Geological Survey believes this trend can be reversed by providing play portfolios for the major oil-producing provinces (Paradox Basin, Uinta Basin, and thrust belt) in Utah and adjacent areas in Colorado and Wyoming. Oil plays are geographic areas with petroleum potential caused by favorable combinations of source rock, migration paths, reservoir rock characteristics, and other factors. The play portfolios will include: descriptions and maps of the major oil plays by reservoir; production and reservoir data; case-study field evaluations; summaries of the state-of-the-art drilling, completion, and secondary/tertiary techniques for each play; locations of major oil pipelines; descriptions of reservoir outcrop analogs; and identification and discussion of land use constraints. All play maps, reports, databases, and so forth, produced for the project will be published in interactive, menu-driven digital (web-based and compact disc) and hard-copy formats. This report covers research activities for the fourth quarter of the first project year (April 1 through June 30, 2003). This work included describing outcrop analogs to the Jurassic Nugget Sandstone and Pennsylvanian Paradox Formation, the major oil producers in the thrust belt and Paradox Basin, respectively. Production-scale outcrop analogs provide an excellent view, often in three dimensions, of reservoir-facies characteristics and boundaries contributing to the overall heterogeneity of reservoir rocks. They can be used as a ''template'' for evaluation of data from conventional core, geophysical and petrophysical logs, and seismic surveys. The Nugget Sandstone was deposited in an extensive dune field that extended from Wyoming to

  3. Clay Play

    Science.gov (United States)

    Rogers, Liz; Steffan, Dana

    2009-01-01

    This article describes how to use clay as a potential material for young children to explore. As teachers, the authors find that their dialogue about the potential of clay as a learning medium raises many questions: (1) What makes clay so enticing? (2) Why are teachers noticing different play and conversation around the clay table as compared to…

  4. Playing Teacher.

    Science.gov (United States)

    Gilbert, Juan E.

    The acceptance of animation technologies is increasing. Video games, such as Sony PlayStation (SONY, 2002), have become part of the culture for young people from kindergarten through undergraduate school. Animation technologies have been implemented into educational systems in the form of animated pedagogical agents (Johnson, 2000). The research…

  5. Group play

    DEFF Research Database (Denmark)

    Tychsen, Anders; Hitchens, Michael; Brolund, Thea

    2008-01-01

    Role-playing games (RPGs) are a well-known game form, existing in a number of formats, including tabletop, live action, and various digital forms. Despite their popularity, empirical studies of these games are relatively rare. In particular there have been few examinations of the effects of the v......Role-playing games (RPGs) are a well-known game form, existing in a number of formats, including tabletop, live action, and various digital forms. Despite their popularity, empirical studies of these games are relatively rare. In particular there have been few examinations of the effects...... of the various formats used by RPGs on the gaming experience. This article presents the results of an empirical study, examining how multi-player tabletop RPGs are affected as they are ported to the digital medium. Issues examined include the use of disposition assessments to predict play experience, the effect...... of group dynamics, the influence of the fictional game characters and the comparative play experience between the two formats. The results indicate that group dynamics and the relationship between the players and their digital characters, are integral to the quality of the gaming experience in multiplayer...

  6. Water Play

    Science.gov (United States)

    Cline, Jane E.; Smith, Brandy A.

    2016-01-01

    The inclusion of activities to develop sensory awareness, spatial thinking, and physical dexterity, operationalized through hands-on science lessons such as water play, have long been part of early childhood education. This practical article addresses Next Generation Science Standards K-2 ETS1-3 and K-2 ETS1-2 by having four-year-old…

  7. Sweet Play

    Science.gov (United States)

    Leung, Shuk-kwan S.; Lo, Jane-Jane

    2010-01-01

    This article features Sweet play math, a "math by the month" activity that involves decorating and making sugar cubes. Teachers may want to substitute straws, paper squares, alphabet blocks, or such commercially made manipulatives as Unifix[R] cubes for the real sweets. Given no allergy concerns, teachers and students alike would enjoy some sweet…

  8. Performance of finite order distribution-generated universal portfolios

    Science.gov (United States)

    Pang, Sook Theng; Liew, How Hui; Chang, Yun Fah

    2017-04-01

    A Constant Rebalanced Portfolio (CRP) is an investment strategy which reinvests by redistributing wealth equally among a set of stocks. The empirical performance of the distribution-generated universal portfolio strategies are analysed experimentally concerning 10 higher volume stocks from different categories in Kuala Lumpur Stock Exchange. The time interval of study is from January 2000 to December 2015, which includes the credit crisis from September 2008 to March 2009. The performance of the finite-order universal portfolio strategies has been shown to be better than Constant Rebalanced Portfolio with some selected parameters of proposed universal portfolios.

  9. Research on patent portfolio design by Using of TRIZ Method

    Directory of Open Access Journals (Sweden)

    Li Hui

    2016-01-01

    Full Text Available By integrating patent portfolio design ideas and TRIZ innovative approaches, a patent portfolio design model is proposed in this paper, which is based on the enterprise’s core technology. Basing on this model, the TRIZ based portfolio design process is developed via matching the TRIZ innovative methods and the types of patent portfolio and constructing patent portfolios using homologous TRIZ innovative methods. Taking TRIZ as the basic theory and synthesizing innovative methodologies, patent jurisprudence, and management, interdisciplinary research of collaborative innovative design is conducted.

  10. Finite-order universal portfolios generated by probability mass functions

    Science.gov (United States)

    Tan, Choon Peng; Chu, Sin Yen; Pan, Wei Yeing

    2015-05-01

    It is shown that the finite-order universal portfolios generated by independent discrete random variables are constant rebalanced portfolios. The case where the universal portfolios are generated by the moments of the joint Dirichlet distribution is studied. The performance of the low-order Dirichlet universal portfolios on some stock-price data set is analyzed. It is demonstrated that the performance is comparable and in some cases outperform the moving-order Cover-Ordentlich universal portfolios with faster implementation time and higher wealth achieved.

  11. Electronic reflective student portfolios to demonstrate achievement of ability-based outcomes during advanced pharmacy practice experiences.

    Science.gov (United States)

    Briceland, Laurie L; Hamilton, Robert A

    2010-06-15

    To demonstrate achievement of ability-based outcomes through a structured review of electronic student portfolios in an advanced pharmacy practice experience (APPE) program. One hundred thirty-eight students produced electronic portfolios containing select work products from APPEs, including a self-assessment reflective essay that demonstrated achievement of course manual-specified ability-based outcomes. Through portfolio submissions, all students demonstrated the achievement of ability-based outcomes for providing pharmaceutical care, evaluating the literature, and managing the medication use system with patient case reports most frequently submitted. The rubric review of self-reflective essays addressed student learning through APPEs and continuing professional development plans. The electronic portfolio with reflective essay proved to be a useful vehicle to demonstrate achievement of ability-based outcomes.

  12. A study on relationship between the return of value/growth portfolio and market return: Evidence from Tehran Stock Exchange

    Directory of Open Access Journals (Sweden)

    Monireh Mashhadi Ramezanali

    2014-07-01

    Full Text Available This study examines the relationship between the returns of two value and growth portfolios and the return of market on 15 selected firms on Tehran Stock Exchange over the period 2008-2011. The study divides the firms into two groups in terms of the ratios of price on earning as well as price on book value into two groups of value and growth portfolios. Using some regression analysis, the study has determined a positive and meaningful relationship between value portfolio and market return when the market is on the upside but this relationship is not meaningful during the bear session. The results indicate that during the bull sessions, value portfolios provide better investment opportunities than growth ones do.

  13. Development and roll out of the JETS e-portfolio: a web based electronic portfolio for endoscopists

    Science.gov (United States)

    Mehta, T; Dowler, K; McKaig, B C; Valori, R M; Dunckley, P

    2011-01-01

    The JAG Endoscopy Training System (JETS) e-portfolio was designed to provide an electronic log of endoscopic experience, improve the effectiveness of training, streamline the JAG certification process and support the quality assurance of trainers, units and regional training programmes. It was piloted in 2008 with an 82.6% uptake in trainees offered the system. The system was released in the UK in September 2009. Steady adoption across the UK demonstrates the service finds it a valuable tool. In time it will be the only vehicle through which a trainee can achieve certification through JAG to practise independently. PMID:28839580

  14. A Grey Theory Based Multiple Attribute Approach for R&D Project Portfolio Selection

    Directory of Open Access Journals (Sweden)

    Rupak Bhattacharyya

    2015-06-01

    Full Text Available In this paper, the research and development (R&D project portfolio selection problem is introduced as a multiple attribute decision making problem. Recognizing and modeling the project interdependencies provide valuable cost savings and other greater benefits to organizations. Therefore, besides conventional attributes like cost and outcome, different type of interdependencies are also considered as attributes. Since the decision makers’ preferences on the project alternatives or attributes are uncertain, a grey theory based method is proposed to cope with the uncertainty. correspondingly, the preferences and ratings of the attributes are described by linguistic variables, which are further expressed as grey numbers. Consequently, a ranking order of the projects is done using grey possibility degree and is used to determine the portfolio. To explore, an illustration is done by a case study. The methodology proposed here is shown to be an efficient approach to solve the R&D project portfolio selection problem.

  15. Deaf College Students' Perspectives on Literacy Portfolios.

    Science.gov (United States)

    Nickerson, Jane Freiburg

    2003-01-01

    This study examined use of literacy portfolios in a college developmental English class in which students who are deaf assessed their reading comprehension, writing processes, and products. Assignments involved reflective thinking and were grounded in authentic tasks. Various field research techniques were used to ascertain the uses and influences…

  16. Portfolio optimization using median-variance approach

    Science.gov (United States)

    Wan Mohd, Wan Rosanisah; Mohamad, Daud; Mohamed, Zulkifli

    2013-04-01

    Optimization models have been applied in many decision-making problems particularly in portfolio selection. Since the introduction of Markowitz's theory of portfolio selection, various approaches based on mathematical programming have been introduced such as mean-variance, mean-absolute deviation, mean-variance-skewness and conditional value-at-risk (CVaR) mainly to maximize return and minimize risk. However most of the approaches assume that the distribution of data is normal and this is not generally true. As an alternative, in this paper, we employ the median-variance approach to improve the portfolio optimization. This approach has successfully catered both types of normal and non-normal distribution of data. With this actual representation, we analyze and compare the rate of return and risk between the mean-variance and the median-variance based portfolio which consist of 30 stocks from Bursa Malaysia. The results in this study show that the median-variance approach is capable to produce a lower risk for each return earning as compared to the mean-variance approach.

  17. Robust Utility Maximization Under Convex Portfolio Constraints

    Energy Technology Data Exchange (ETDEWEB)

    Matoussi, Anis, E-mail: anis.matoussi@univ-lemans.fr [Université du Maine, Risk and Insurance institut of Le Mans Laboratoire Manceau de Mathématiques (France); Mezghani, Hanen, E-mail: hanen.mezghani@lamsin.rnu.tn; Mnif, Mohamed, E-mail: mohamed.mnif@enit.rnu.tn [University of Tunis El Manar, Laboratoire de Modélisation Mathématique et Numérique dans les Sciences de l’Ingénieur, ENIT (Tunisia)

    2015-04-15

    We study a robust maximization problem from terminal wealth and consumption under a convex constraints on the portfolio. We state the existence and the uniqueness of the consumption–investment strategy by studying the associated quadratic backward stochastic differential equation. We characterize the optimal control by using the duality method and deriving a dynamic maximum principle.

  18. Technology portfolio and capacity expansion under uncertainty

    Science.gov (United States)

    Filomena, Tiago Pascoal

    We analyze the problem of generation capacity expansion and portfolio of technologies choice in a restructured electricity market in which marginal costs are uncertain. In our investment model, firms behave as Cournot players and they make three different decisions in equilibrium: (i) the portfolio of technologies, (ii) technologies capacity and (iii) technologies production for every scenario. The decisions related to the portfolio and capacity are ex-ante and the production is ex-post to the realization of uncertainty. We consider the marginal cost as the uncertain parameter and we show with a simple transformation that the model is also flexible to allow for general load curves. Our main result is that portfolio diversification arises even with risk-neutral firms and technologies with different cost expectations. Furthermore, we characterize the production level of each firm for each possible scenario realization. All the conditions that yield (or do not yield) to diversification in a duopoly with two scenarios are discussed in the dissertation. Under our assumptions, we point out that in aggregate terms firms always invest and produce the same quantities. Asymmetry on the use of technologies between players can occur, but it just happens when technologies have the same cost expectation. We show that when technologies present different cost expectation the equilibrium results are unique and symmetric.

  19. Portfolio selection theory and wildlife management

    African Journals Online (AJOL)

    proportion of land allocated to each of a number of agricultural products. The ideas of. Theron and Van den Honert are followed in this paper. Their potential application to game ranches is explored by means of an illustrative case study. 2 The Problem. The portfolio selection problem is the bi-objective problem of choosing ...

  20. Equity Portfolio Management Using Option Price Information

    DEFF Research Database (Denmark)

    Christoffersen, Peter; Pan, Xuhui (Nick)

    We survey the recent academic literature that uses option-implied information to construct equity portfolios. Studies show that equity managers can earn a positive alpha by using information in individual equity options, by using stocks' exposure to information in market index options, and by using...

  1. Information Content of Mutual Fund Portfolio Disclosure

    NARCIS (Netherlands)

    Y. Wang (Yu)

    2011-01-01

    textabstractAcademic financial economists have been keenly interested in the value of active portfolio management since the seminal paper of Jensen (1968). This book examines the information advantages that active mutual fund managers attain in financial markets through an analysis of disclosed fund

  2. Electronic Demonstration Portfolios for Visual Anthropology Majors

    Science.gov (United States)

    Chalfen, Richard

    2004-01-01

    The paper suggests a model for linking the realisation and the articulation of both knowledge and accumulation of skills by fourth year students who have majored in visual anthropology. One central component is the integration of student-generated intellectual autobiographies into electronic demonstration portfolios, a formula and strategy that…

  3. Digital portfolio og peer to peer feedback

    DEFF Research Database (Denmark)

    Jacobsen, Ditte; Bahrenscheer, Jesper Glarborg

    2017-01-01

    studerende og øget transfer mellem teori og praksis. Artiklen tager afsæt i erfaringerne fra udvikling, anvendelse og evaluering af den digitale portfolio og peer to peer feedback. Portfolien er digital og tilknyttet Metropols Learning Management System. De studerende uploader individuelt ugentligt deres...

  4. The simulation system of credit portfolio evaluation

    Directory of Open Access Journals (Sweden)

    G. Magariu

    1999-02-01

    Full Text Available A simulation system of evaluation of a portfolio of credits is presented. The system answers user's question from the list of possible questions. Design, execution and analysis of results of experiments needed for the answer are controlled by user question. Input and output data may be precise as well as probabilistic.

  5. Optimal Portfolios Under Dynamic Shortfall Constraints | Akume ...

    African Journals Online (AJOL)

    Tail Conditional Expectation (TCE), on the other hand, for an underlying continuous distribution, is a coherent risk measures. Our focus in this paper is the dynamic portfolio and consumption choice of a trader subject to a risk limit specified in terms of TCE. Keywords and phrases : Value-at-Risk, Tail Conditional Expectation, ...

  6. Assessment and Planning Using Portfolio Analysis

    Science.gov (United States)

    Roberts, Laura B.

    2010-01-01

    Portfolio analysis is a simple yet powerful management tool. Programs and activities are placed on a grid with mission along one axis and financial return on the other. The four boxes of the grid (low mission, low return; high mission, low return; high return, low mission; high return, high mission) help managers identify which programs might be…

  7. Portfolio Assessment: Production and Reduction of Complexity

    Science.gov (United States)

    Qvortrup, Ane; Keiding, Tina Bering

    2015-01-01

    Over the last two decades, the education system has witnessed a shift from summative, product-oriented assessment towards formative, process-oriented assessment. Among the different learning and assessment initiatives introduced in the slipstream of this paradigmatic turn, the portfolio seems to have become one of the most popular. By redescribing…

  8. Is currency factor important for global portfolios?

    NARCIS (Netherlands)

    Chaieb, I.; Errunza, V.; Majerbi, B.

    2009-01-01

    We investigate whether cross-country diversification, particularly into emerging markets, has an impact on the pricing of exchange risk for globally diversified portfolios. Our empirical tests based on a conditional IAPM show that the price of exchange risk is highly significant in global sector

  9. Portfolio selection using genetic algorithms | Yahaya | International ...

    African Journals Online (AJOL)

    variance (E-V) model is undoubtedly a popular research area in finance. The combination of different assets in a master asset often called a portfolio is more profitable than holding a single asset, since the risk of investment is diversified away ...

  10. Best evidence on the educational effects of undergraduate portfolios.

    Science.gov (United States)

    Buckley, Sharon; Coleman, Jamie; Khan, Khalid

    2010-09-01

    The great variety of portfolio types and schemes used in the education of health professionals is reflected in the extensive and diverse educational literature relating to portfolio use. We have recently completed a Best Evidence Medical Education (BEME) systematic review of the literature relating to the use of portfolios in the undergraduate setting that offers clinical teachers insights into both their effects on learning and issues to consider in portfolio implementation. Using a methodology based on BEME recommendations, we searched the literature relating to a range of health professions, identifying evidence for the effects of portfolios on undergraduate student learning, and assessing the methodological quality of each study. The higher quality studies in our review report that, when implemented appropriately, portfolios can improve students' ability to integrate theory with practice, can encourage their self-awareness and reflection, and can offer support for students facing difficult emotional situations. Portfolios can also enhance student-tutor relationships and prepare students for the rigours of postgraduate training. However, the time required to complete a portfolio may detract from students' clinical learning. An analysis of methodological quality against year of publication suggests that, across a range of health professions, the quality of the literature relating to the educational effects of portfolios is improving. However, further work is still required to build the evidence base for the educational effects of portfolios, particularly comparative studies that assess effects on learning directly. Our findings have implications for the design and implementation of portfolios in the undergraduate setting. © Blackwell Publishing Ltd 2010.

  11. Digital Portfolio: a Strategy for Teachers Professional Development

    Directory of Open Access Journals (Sweden)

    R. Jans

    2008-03-01

    Full Text Available Teachers have to work with e-portfolio with theirstudents. This is a very demanding task because they neverwere educated with e-portfolio themselves. Therefore aEuropean Comenius project was submitted in 2005. In thisapproved project a whole week formation (april 2007 wasoffered to nineteen teachers from all over Europe. A yearlater they will meet again to see in what way the course hashad effects on their work with e-portfolio and students.Most interesting to notice was that the basic ICT-skills ofteachers are nowadays realized. However teachers are stillbusy with text and text-files. Rarely they uploadedmultimedia, like e.g. photo’s, video’s, youtube-movies, … intheir e-portfolio. The essential element of an e-portfolio, thepersonal and professional development plan, that forms thebackbone of the e-portfolio and offers the possibility tomake the e-portfolio an effective learning instrument wasunknown.

  12. Two-Stage Fuzzy Portfolio Selection Problem with Transaction Costs

    Directory of Open Access Journals (Sweden)

    Yanju Chen

    2015-01-01

    Full Text Available This paper studies a two-period portfolio selection problem. The problem is formulated as a two-stage fuzzy portfolio selection model with transaction costs, in which the future returns of risky security are characterized by possibility distributions. The objective of the proposed model is to achieve the maximum utility in terms of the expected value and variance of the final wealth. Given the first-stage decision vector and a realization of fuzzy return, the optimal value expression of the second-stage programming problem is derived. As a result, the proposed two-stage model is equivalent to a single-stage model, and the analytical optimal solution of the two-stage model is obtained, which helps us to discuss the properties of the optimal solution. Finally, some numerical experiments are performed to demonstrate the new modeling idea and the effectiveness. The computational results provided by the proposed model show that the more risk-averse investor will invest more wealth in the risk-free security. They also show that the optimal invested amount in risky security increases as the risk-free return decreases and the optimal utility increases as the risk-free return increases, whereas the optimal utility increases as the transaction costs decrease. In most instances the utilities provided by the proposed two-stage model are larger than those provided by the single-stage model.

  13. MAJOR OIL PLAYS IN UTAH AND VICINITY

    Energy Technology Data Exchange (ETDEWEB)

    Thomas C. Chidsey, Jr.

    2003-01-01

    Utah oil fields have produced a total of 1.2 billion barrels (191 million m{sup 3}). However, the 15 million barrels (2.4 million m{sup 3}) of production in 2000 was the lowest level in over 40 years and continued the steady decline that began in the mid-1980s. The Utah Geological Survey believes this trend can be reversed by providing play portfolios for the major oil producing provinces (Paradox Basin, Uinta Basin, and thrust belt) in Utah and adjacent areas in Colorado and Wyoming. Oil plays are geographic areas with petroleum potential caused by favorable combinations of source rock, migration paths, reservoir rock characteristics, and other factors. The play portfolios will include: descriptions and maps of the major oil plays by reservoir; production and reservoir data; case-study field evaluations; summaries of the state-of-the-art drilling, completion, and secondary/tertiary techniques for each play; locations of major oil pipelines; descriptions of reservoir outcrop analogs; and identification and discussion of land use constraints. All play maps, reports, databases, and so forth, produced for the project will be published in interactive, menu-driven digital (web-based and compact disc) and hard-copy formats. This report covers research activities for the first quarter of the first project year (July 1 through September 30, 2002). This work included producing general descriptions of Utah's major petroleum provinces, gathering field data, and analyzing best practices in the Utah Wyoming thrust belt. Major Utah oil reservoirs and/or source rocks are found in Devonian through Permian, Jurassic, Cretaceous, and Tertiary rocks. Stratigraphic traps include carbonate buildups and fluvial-deltaic pinchouts, and structural traps include basement-involved and detached faulted anticlines. Best practices used in Utah's oil fields consist of waterflood, carbon-dioxide flood, gas-injection, and horizontal drilling programs. Nitrogen injection and horizontal

  14. An Ad-Hoc Initial Solution Heuristic for Metaheuristic Optimization of Energy Market Participation Portfolios

    Directory of Open Access Journals (Sweden)

    Ricardo Faia

    2017-06-01

    Full Text Available The deregulation of the electricity sector has culminated in the introduction of competitive markets. In addition, the emergence of new forms of electric energy production, namely the production of renewable energy, has brought additional changes in electricity market operation. Renewable energy has significant advantages, but at the cost of an intermittent character. The generation variability adds new challenges for negotiating players, as they have to deal with a new level of uncertainty. In order to assist players in their decisions, decision support tools enabling assisting players in their negotiations are crucial. Artificial intelligence techniques play an important role in this decision support, as they can provide valuable results in rather small execution times, namely regarding the problem of optimizing the electricity markets participation portfolio. This paper proposes a heuristic method that provides an initial solution that allows metaheuristic techniques to improve their results through a good initialization of the optimization process. Results show that by using the proposed heuristic, multiple metaheuristic optimization methods are able to improve their solutions in a faster execution time, thus providing a valuable contribution for players support in energy markets negotiations.

  15. Use of portfolios in otolaryngology graduate medical education.

    Science.gov (United States)

    Gurgel, Richard K; Miller, Robert A; Smith, Richard J H

    2011-06-01

    Learning portfolios, as defined by the Accreditation Council for Graduate Medical Education (ACGME), are professional development tools for resident education. Moreover, the scope of portfolio use is expanding to become a component of the accreditation system, with likely mandatory implementation by 2016. The objective of this study is to describe the extent of portfolio use in otolaryngology training programs and resident attitudes toward portfolios. Cross-sectional survey. All residents in ACGME-accredited otolaryngology programs were contacted via email linked to an online survey. One follow-up email was sent after initial notification. Three hundred eighteen (22%) of the 1,431 invited residents responded to the survey, representing 65 of 103 ACGME-accredited otolaryngology training programs. Fifty-eight percent of the programs represented had residents who maintained a portfolio. When asked to what extent portfolios enhanced education, 39% of residents who kept a portfolio found them helpful, 27% were neutral, and 35% did not find them helpful, although 60% plan to use their portfolio after residency. For those residents who did not maintain a portfolio, 70% cited they did not maintain a portfolio because it is not a requirement in their program. Twenty-one percent of all respondents felt that portfolios should be mandatory, whereas 61% felt that portfolios should be encouraged, but not required. Although portfolios are encouraged by the ACGME, and will ultimately become mandatory, they are not yet fully integrated in otolaryngology training programs. Only a minority of residents in this study thought portfolios enhanced education. Copyright © 2011 The American Laryngological, Rhinological, and Otological Society, Inc.

  16. The national portfolio of learning for postgraduate family medicine training in South Africa: experiences of registrars and supervisors in clinical practice.

    Science.gov (United States)

    Jenkins, Louis; Mash, Bob; Derese, Anselme

    2013-11-08

    In South Africa the submission of a portfolio of learning has become a national requirement for assessment of family medicine training. A national portfolio has been developed, validated and implemented. The aim of this study was to explore registrars' and supervisors' experience regarding the portfolio's educational impact, acceptability, and perceived usefulness for assessment of competence. Semi-structured interviews were conducted with 17 purposively selected registrars and supervisors from all eight South African training programmes. The portfolio primarily had an educational impact through making explicit the expectations of registrars and supervisors in the workplace. This impact was tempered by a lack of engagement in the process by registrars and supervisors who also lacked essential skills in reflection, feedback and assessment. The acceptability of the portfolio was limited by service delivery demands, incongruence between the clinical context and educational requirements, design of the logbook and easy availability of the associated tools. The use of the portfolio for formative assessment was strongly supported and appreciated, but was not always happening and in some cases registrars had even organised peer assessment. Respondents were unclear as to how the portfolio would be used for summative assessment. The learning portfolio had a significant educational impact in shaping work-place based supervision and training and providing formative assessment. Its acceptability and usefulness as a learning tool should increase over time as supervisors and registrars become more competent in its use. There is a need to clarify how it will be used in summative assessment.

  17. Can E-Portfolio Improve Students’ Readiness to Find an IT Career?

    Directory of Open Access Journals (Sweden)

    Abdallah Tubaishat

    2015-06-01

    Full Text Available An E-Portfolio Assessment Management System (EAMS can be an innovative tool that provides students with flexible opportunities to demonstrate the acquisition of skills and abilities in an outcome-based institution. The system has been developed and used for the past ten years to create, reflect, revise, and structure students’ work. It is a repository management system that facilitates collecting, sharing, and presenting artifacts of student learning outcomes via a digital medium. Therefore, it provides students with flexible opportunities to demonstrate the acquisition of skills and abilities to demonstrate growth of achieving learning outcomes. The rationale of the EAMS is to allow students to demonstrate competences and reflect upon experiences to improve their learning and career readiness; hence, they are accountable for their learning. The system was built around two defined set of learning outcomes: institutionally agreed upon set of learning outcomes, and learning objectives that are related to major requirements. The purpose of this study is to analyze students’ perceptions and attitudes when using an e-portfolio to support their employment opportunities. The participants were 217 students in the College of Technological Innovation. The students reported that the developing of e-portfolios was extremely helpful. The results showed that students have positive opinions about using e-portfolios as a beneficial tool to support their readiness for employment; they believe an e-portfolio increases their confidence to find a job in the IT field because it can allow them to showcase artifacts that demonstrate competencies and reflect upon experiences, and they can provide their supervisors during their industrial training with an e-resume that includes views of their actual work of what they have learned and are able to do when they complete their degree. Employers then can review e-portfolios to select prospective employees work readiness

  18. IT portfolio decision-making in local governments

    DEFF Research Database (Denmark)

    Agger Nielsen, Jeppe; Pedersen, Keld

    2014-01-01

    IT project portfolio management (IT PPM) has evolved into a significant area of research interest, but we know little about IT PPM practices in public sector organizations. Therefore this article investigates decision-making processes in the IT PPM practices of local governments, and discusses how...... these practices match the normative advice proposed by the IT PPMliterature.We rely on decision-making theories togetherwith case-studies of four Danish local governments.We find that politics, intuition and coincidence play a crucial role in IT PPM decisionmaking, while technical rationality (as proposed...... that implementing textbook-IT PPM is difficult because it relies on decision-making ideals that are incompatiblewith organizational contexts and individual behavior in these organizations. Instead of radically changing decision-making styles, the organizations might be better off improving IT PPM practice within...

  19. U.S. Renewables Portfolio Standards: 2017 Annual Status Report

    Energy Technology Data Exchange (ETDEWEB)

    Barbose, Galen [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    2017-07-25

    Berkeley Lab’s annual status report on U.S. renewables portfolio standards (RPS) provides an overview of key trends associated with U.S. state RPS policies. The report, published in slide-deck form, describes recent legislative revisions, key policy design features, compliance with interim targets, past and projected impacts on renewables development, and compliance costs. The 2017 edition of the report presents historical data through year-end 2016 and projections through 2030. Key trends from this edition of the report include the following: -Evolution of state RPS programs: Significant RPS-related policy revisions since the start of 2016 include increased RPS targets in DC, MD, MI, NY, RI, and OR; requirements for new wind and solar projects and other major reforms to the RPS procurement process in IL; and a new offshore wind carve-out and solar procurement program in MA. -Historical impacts on renewables development: Roughly half of all growth in U.S. renewable electricity (RE) generation and capacity since 2000 is associated with state RPS requirements. Nationally, the role of RPS policies has diminished over time, representing 44% of all U.S. RE capacity additions in 2016. However, within particular regions, RPS policies continue to play a central role in supporting RE growth, constituting 70-90% of 2016 RE capacity additions in the West, Mid-Atlantic, and Northeast. -Future RPS demand and incremental needs: Meeting RPS demand growth will require roughly a 50% increase in U.S. RE generation by 2030, equating to 55 GW of new RE capacity. To meet future RPS demand, total U.S. RE generation will need to reach 13% of electricity sales by 2030 (compared to 10% today), though other drivers will also continue to influence RE growth. -RPS target achievement to-date: States have generally met their interim RPS targets in recent years, with only a few exceptions reflecting unique state-specific policy designs. -REC pricing trends: Prices for renewable energy

  20. Guided Portfolio Writing as a Scaffold for Reflective Learning in In-Service Contexts: A Case Study

    Science.gov (United States)

    Pires Pereira, Íris Susana; Cristo Parente, Maria Cristina; Vieira da Silva, Cristina

    2016-01-01

    Language is widely recognized as an inescapable mediating tool for professional learning, and with this text we want to contribute to a better understanding of the particular role that guided writing can play in in-service professional reflective learning. We analysed one pre-school teacher's written portfolio, the construction of which was guided…

  1. Adaptive Portfolio Optimization for Multiple Electricity Markets Participation.

    Science.gov (United States)

    Pinto, Tiago; Morais, Hugo; Sousa, Tiago M; Sousa, Tiago; Vale, Zita; Praca, Isabel; Faia, Ricardo; Pires, Eduardo Jose Solteiro

    2016-08-01

    The increase of distributed energy resources, mainly based on renewable sources, requires new solutions that are able to deal with this type of resources' particular characteristics (namely, the renewable energy sources intermittent nature). The smart grid concept is increasing its consensus as the most suitable solution to facilitate the small players' participation in electric power negotiations while improving energy efficiency. The opportunity for players' participation in multiple energy negotiation environments (smart grid negotiation in addition to the already implemented market types, such as day-ahead spot markets, balancing markets, intraday negotiations, bilateral contracts, forward and futures negotiations, and among other) requires players to take suitable decisions on whether to, and how to participate in each market type. This paper proposes a portfolio optimization methodology, which provides the best investment profile for a market player, considering different market opportunities. The amount of power that each supported player should negotiate in each available market type in order to maximize its profits, considers the prices that are expected to be achieved in each market, in different contexts. The price forecasts are performed using artificial neural networks, providing a specific database with the expected prices in the different market types, at each time. This database is then used as input by an evolutionary particle swarm optimization process, which originates the most advantage participation portfolio for the market player. The proposed approach is tested and validated with simulations performed in multiagent simulator of competitive electricity markets, using real electricity markets data from the Iberian operator-MIBEL.

  2. The Development of Blended-Learning Teaching Portfolio Course Using TBL Approach

    Science.gov (United States)

    Pardamean, Bens; Prabowo, Harjanto; Muljo, Hery Harjono; Suparyanto, Teddy; Masli, Eryadi K.; Donovan, Jerome

    2017-01-01

    This article was written to develop a teaching portfolio that helps lecturers maximize the benefits of blended learning, a combination of in-person and online learning, through the use of Team-Based Learning (TBL) teaching and learning approach. Studies show that TBL can provide opportunities in developing teamwork capabilities and enhancing…

  3. E-Portfolio as a Corrective Platform towards EFL Students' Overall/Componential Writing Performance

    Science.gov (United States)

    Saeedi, Zari; Meihami, Hussein

    2015-01-01

    This paper aims at accentuating and exploring the effect of using electronic portfolio (EP) platform in providing corrective feedback (CF) on EFL students' overall and micro-componential writing performance. Moreover, by conducting a semi-structured interview, the study seeks to obtain students' attitudes towards the use of EP in three aspects,…

  4. Worth of Electronic Portfolios to Education Majors: A "Two by Four" Perspective

    Science.gov (United States)

    Sherry, Annette C.; Bartlett, Andrea

    2005-01-01

    Two groups of education majors--23 undergraduates and 14 educational technology graduate students--provided perspectives about their electronic portfolios. Two investigators independently directed them, evaluating the process from students' perspectives, including holistic evaluations by departmental faculty. Survey data were framed within…

  5. Using Portfolio Assessment to Develop Transition Programs for Students with Mental Retardation

    Science.gov (United States)

    Carothers, Douglas E.; Taylor, Ronald L.

    2005-01-01

    The changing perspectives of mental retardation require the use of assessment techniques that reveal strengths and weaknesses in the individual's present level of functioning and highlight the areas and intensity of needed supports. Portfolios provide such a method of assessment because they are sensitive to small improvements in functioning,…

  6. An e-Portfolio-Based Model for the Application and Sharing of College English ESP MOOCs

    Science.gov (United States)

    Chen, Jinshi

    2017-01-01

    The informationalized knowledge sharing of MOOCs not only promotes the change of teaching concept and the reform of teaching methodology, but also provides a new opportunity for the teaching resource integration and sharing between different universities. The present study has constructed an e-Portfolio-based model for the application and sharing…

  7. Strategic Academic Activities: Bring Them Together with a Program Portfolio. AIR 2000 Annual Forum Paper.

    Science.gov (United States)

    Casey, Julie; McLaughlin, Gerry

    This paper describes how one university developed a program portfolio, which provides a means for integrating previous strategic initiatives. Step one involved identifying the need for information as different institutional changes were implemented. Over 4 years, the university: launched a comprehensive strategic growth plan; designed and…

  8. Incorporating a Soil Science Artifact into a University ePortfolio Assessment Tool

    Science.gov (United States)

    Mikhailova, Elena; Werts, Joshua; Post, Christopher; Ring, Gail

    2014-01-01

    The ePortfolio is a useful educational tool that is utilized in many educational institutions to showcase student accomplishments and provide students with an opportunity to reflect on their educational progress. The objective of this study was to develop and test an artifact from an introductory soil science course to be included in the…

  9. Positioning the Learning Asset Portfolio as a Key Component in an Organization's Enterprise Risk Management Strategy

    Science.gov (United States)

    McAliney, Peter J.

    2009-01-01

    This article presents a process for valuing a portfolio of learning assets used by line executives across industries to value traditional business assets. Embedded within the context of enterprise risk management, this strategic asset allocation process is presented step by step, providing readers the operational considerations to implement this…

  10. Playful Technology

    DEFF Research Database (Denmark)

    Johansen, Stine Liv; Eriksson, Eva

    2013-01-01

    In this paper, the design of future services for children in Danish public libraries is discussed, in the light of new challenges and opportunities in relation to new media and technologies. The Danish government has over the last few years initiated and described a range of initiatives regarding...... in the library, the changing role of the librarians and the library space. We argue that intertwining traditional library services with new media forms and engaging play is the core challenge for future design in physical public libraries, but also that it is through new media and technology that new...

  11. Playing Possum

    Directory of Open Access Journals (Sweden)

    Enrico Euli

    2016-07-01

    Full Text Available Our society is drenched in the catastrophe; where the growth of financial crisis, environmental cataclysm and militarization represents its gaudiest and mortifying phenomena. Humans struggle with depression, sense of impotence, anguish towards a future considered a threat.  A possibility to keep us alive can be represented by the enhancement of our ability in ‘playing Possum’, an exercise of desisting and renitence: to firmly say ‘no’. To say no to a world that proposes just one way of being and living free, that imposes as the only unavoidable possible destiny.

  12. Use of ePortfolios in K-12 teacher hiring in North Carolina: Perspectives of School Principals

    Directory of Open Access Journals (Sweden)

    Abdou Ndoye

    2012-09-01

    Full Text Available This study explored the perceptions of principals involved in the hiring process of K–12 teachers in 11 counties in southeastern North Carolina. Forty-nine principals responded to a survey on ePortfolio use in the hiring process: the pros and cons, desirable artifacts, stage of use, preferred delivery method, and improvements that can increase their usage. We examined each of these questions and whether certain factors (prior use, technology skills, and years as a hiring agent predict principals’ ePortfolio use. Our findings suggest that ePortfolios provide improved and current information about teacher candidates that is easily accessible and organized. Collectively, this allows principals to assess teacher candidates’ suitability for employment. Although there are problems associated with ePortfolio use during hiring, which are detailed below, the results suggest that principals most frequently use ePortfolios during the interview process, prefer delivery via a website address, and that prior use is the best predictor of future ePortfolio use.

  13. Beating the market with small portfolios: Evidence from Brazil

    Directory of Open Access Journals (Sweden)

    André A.P. Santos

    2015-01-01

    Full Text Available Optimal portfolios with a restriction on the number of assets, also referred to as cardinality-constrained portfolios, have been receiving attention in the literature due to its popularity among market practitioners and retail investors. In most cases, however, the interest is in proposing efficient optimization methods to solve the problem, with little or no attention to the characteristics of the resulting portfolio such as risk-adjusted performance and turnover. We address this question by implementing a tractable reformulation of the cardinality-constrained version of the minimum variance portfolio. We analyze the out-of-sample performance of cardinality-constrained portfolios according to alternative criteria and check the robustness of the results for portfolios with alternative number of assets and under alternative re-balancing frequencies. Our empirical application for the Brazilian equities market shows that cardinality-constrained minimum variance portfolios with very few assets, e.g. 3 stocks, can deliver statistically lower portfolio risk and higher Sharpe ratios in comparison to the market index. Similar results are obtained for constrained portfolios with 5 and 10 assets and under daily, weekly, and monthly re-balancing frequencies. Our evidence indicates that it is possible to obtain better risk-adjusted performance with fewer securities in the portfolio by using an improved allocation scheme.

  14. A qualitative examination of teaching portfolios as a means of transmitting science education values and promoting reflective practice in novice teachers

    Science.gov (United States)

    Doty, Margaret Hawthorne

    Increasing numbers of schools are using teaching portfolios for professional development and evaluation purposes. Several researchers have stated that portfolios foster reflectivity in the teachers who prepare them, and others have found the preparation of portfolios effective in changing teaching behaviors. Current reforms in science education call for teachers to provide opportunities for students to engage in inquiry activities over extended periods of time, placing content in contexts that are relevant to students' everyday lives. Strategies to help teachers revise their practice to bring it into better alignment with the national standards movements are needed. The guidelines for the preparation of a teaching portfolio offer a method by which values about science teaching and learning may be transmitted to novice teachers. This study examined the guidelines for the Connecticut State Department of Education's Beginning Science Teaching Portfolio required of all second-year secondary science teachers to discern what values were embedded. These values were compared to the National Science Education Standards to assess their alignment with current reforms. Four Connecticut science teachers were observed in their classrooms and interviewed before and after the preparation of their teaching portfolios to determine if the quality, quantity and type of reflection changed as they went through the portfolio process. Analysis of the observations, interviews and teaching portfolios determined if their practice changed as a result of the portfolio. It was found that the primary science values reflected in the portfolio guidelines related to the nature of science and the role of the teacher, consistent with the major science standards movements. The teachers in this study changed their practice due to their portfolio preparation, shifting from a more teacher-centered perspective to a more student-centered one, and incorporating more inquiry-based and contextualized content

  15. A Mentor-Based Portfolio Program to Evaluate Pharmacy Students’ Self-Assessment Skills

    Science.gov (United States)

    Kalata, Lindsay R.

    2013-01-01

    Objective. To evaluate pharmacy students' self-assessment skills with an electronic portfolio program using mentor evaluators. Design. First-year (P1) and second-year (P2) pharmacy students used online portfolios that required self-assessments of specific graded class assignments. Using a rubric, faculty and alumni mentors evaluated students' self-assessments and provided feedback. Assessment. Eighty-four P1 students, 74 P2 students, and 59 mentors participated in the portfolio program during 2010-2011. Both student groups performed well overall, with only a small number of resubmissions required. P1 students showed significant improvements across semesters for 2 of the self-assessment questions; P2 students' scores did not differ significantly. The P1 scores were significantly higher than P2 scores for 3 questions during spring 2011. Mentors and students had similar levels of agreement with the extent to which students put forth their best effort on the self-assessments. Conclusion. An electronic portfolio using mentors based inside and outside the school provided students with many opportunities to practice their self-assessment skills. This system represents a useful method of incorporating self-assessments into the curriculum that allows for feedback to be provided to the students. PMID:23716749

  16. A mentor-based portfolio program to evaluate pharmacy students' self-assessment skills.

    Science.gov (United States)

    Kalata, Lindsay R; Abate, Marie A

    2013-05-13

    Objective. To evaluate pharmacy students' self-assessment skills with an electronic portfolio program using mentor evaluators. Design. First-year (P1) and second-year (P2) pharmacy students used online portfolios that required self-assessments of specific graded class assignments. Using a rubric, faculty and alumni mentors evaluated students' self-assessments and provided feedback. Assessment. Eighty-four P1 students, 74 P2 students, and 59 mentors participated in the portfolio program during 2010-2011. Both student groups performed well overall, with only a small number of resubmissions required. P1 students showed significant improvements across semesters for 2 of the self-assessment questions; P2 students' scores did not differ significantly. The P1 scores were significantly higher than P2 scores for 3 questions during spring 2011. Mentors and students had similar levels of agreement with the extent to which students put forth their best effort on the self-assessments. Conclusion. An electronic portfolio using mentors based inside and outside the school provided students with many opportunities to practice their self-assessment skills. This system represents a useful method of incorporating self-assessments into the curriculum that allows for feedback to be provided to the students.

  17. Exploring EFL Learners’ Attitudes toward the Application of a Model of Writing E-portfolio

    Directory of Open Access Journals (Sweden)

    Aliasghar Yousefi Azarfam

    2016-05-01

    Full Text Available This study aimed to explore the attitudes of two groups of EFL learners toward the application of a model of writing e-portfolio in developing their writing skill. It was a follow-up study to an experiment on the effectiveness of this model on the writing performance of Iranian EFL learners. One group had used certain strategies based on the analytic traits of writing, while the other group had not used such strategies in the writing process. Four class members from each writing e-portfolio group were selected purposively for conducting the semi-structured interviews in this research. The findings showed that members of the group that used strategies based on analytic traits of writing had acquired a sort of awareness towards the different qualities of writing, claiming that knowing about the analytic traits of writing caused them to understand the necessity of paying attention to all aspects of writing and not just the usage and mechanical correctness of it. They referred to the role of Peer Checklist in reminding them of the writing qualities to be considered in their self- and peer-assessment. The results of the learners’ feedback in both e-portfolio groups further revealed that the electronic environment of e-portfolios can play a significant role in facilitating the writing task performance of the learners and consequently improving their writing skill in both e-portfolio groups.  On the whole, the student self-reports indicated that the use of strategies based on analytical traits was able to heighten awareness regarding important aspects of writing.

  18. Using E-Learning Portfolio Technology To Support Visual Art Learning

    Directory of Open Access Journals (Sweden)

    Greer Jones-Woodham

    2009-08-01

    learning in this way provides a complete and whole picture approach of all the variables of thoughts collected and presented to allow students to see themselves as learners positioning themselves to test the validity of their beliefs and actions within their communities in and out of the classroom. The e-learning portfolios are succinct in the way they scaffold students' intentions and realize students' appraisal of new ideas tested on how learning has occurred. They see a total package of their ideas that engages their audience whether live or electronic. Students see the conceptualization of their ideas as concepts of whole self, whole learners in defining their sense of space in this culturally diverse place of Trinidad and Tobago.

  19. Portfolios in Stochastic Local Search: Efficiently Computing Most Probable Explanations in Bayesian Networks

    Science.gov (United States)

    Mengshoel, Ole J.; Roth, Dan; Wilkins, David C.

    2001-01-01

    expected hitting time is a rational function - i.e. a ratio of two polynomials - of the probability of applying an additive search operator. Experimentally, we report on synthetically generated BNs as well as BNs from applications, and compare SGSs performance to that of Hugin, which performs BN inference by compilation to and propagation in clique trees. On synthetic networks, SGS speeds up computation by approximately two orders of magnitude compared to Hugin. In application networks, our approach is highly competitive in Bayesian networks with a high degree of determinism. In addition to showing that stochastic local search can be competitive with clique tree clustering, our empirical results provide an improved understanding of the circumstances under which portfolio-based SLS outperforms clique tree clustering and vice versa.

  20. A ubiquitous reflective e-portfolio architecture.

    Science.gov (United States)

    Forte, Marcos; de Souza, Wanderley L; da Silva, Roseli F; do Prado, Antonio F; Rodrigues, Jose F

    2013-11-01

    In nurse and in medicine courses, the use of reflective portfolios as a pedagogical tool is becoming a common practice; in the last years, this practice has gradually migrated from paper-based to electronic-based portfolios. Current approaches for reflective e-portfolios, however, do not widely operate at outdoor sites, where data networks are limited or nonexistent. Considering that many of the activities related to nurse and medicine courses relate to professional practices conducted in such conditions, these network shortcomings restrict the adoption of e-portfolios. The present study describes the requirements specification, design, implementation, and evaluation of the Ubiquitous Reflective E-Portfolio Architecture, a solution proposed to support the development of systems based on mobile and wired access for both online and offline operation. We have implemented a prototype named Professional Practice Module to evaluate the Ubiquitous Reflective E-Portfolio Architecture; the module was based on requirements observed during the professional practice, the paper-based portfolio in use, and related learning meetings in the Medicine Course of a Brazilian University. The evaluation of the system was carried out with a learning group of 2nd year students of the medicine course, who answered to extensive evaluation questionnaires. The prototype proved to be operational in the activities of the professional practice of the Medicine Course object of the study, including homework tasks, patient care, data sharing, and learning meetings. It also demonstrated to be versatile with respect to the availability of the computer network that, many times, was not accessible. Moreover, the students considered the module useful and easy to use, but pointed out difficulties about the keyboard and the display sizes of the netbook devices, and about their operational system. Lastly, most of the students declared preference for the electronic Professional Practice Module in internal

  1. Managing R&D Alliance Portfolios

    DEFF Research Database (Denmark)

    Engel Nielsen, Lars; Mahnke, Volker

    2003-01-01

    Many companies in high technology fields engage with alliance partners to reduce risks, create synergies and learn. While the challenges of managing individual alliances are well documented, little is known on how to manage several R&D alliances simultaneously. Multiple alliance strategies can...... be observed in several companies engaged in the cross section of telecommunication and mobile technology where increased complexity magnifies managerial challenges. Drawing on modern portfolio theory, this paper offers a model for managing portfolios of R&D alliances. In particular, an analysis...... of a technology platform leader reveals how companies can reduce several types of risks associated with new technology and gain synergies by engaging in several alliances simultaneously....

  2. MARKOV CHAIN PORTFOLIO LIQUIDITY OPTIMIZATION MODEL

    Directory of Open Access Journals (Sweden)

    Eder Oliveira Abensur

    2014-05-01

    Full Text Available The international financial crisis of September 2008 and May 2010 showed the importance of liquidity as an attribute to be considered in portfolio decisions. This study proposes an optimization model based on available public data, using Markov chain and Genetic Algorithms concepts as it considers the classic duality of risk versus return and incorporating liquidity costs. The work intends to propose a multi-criterion non-linear optimization model using liquidity based on a Markov chain. The non-linear model was tested using Genetic Algorithms with twenty five Brazilian stocks from 2007 to 2009. The results suggest that this is an innovative development methodology and useful for developing an efficient and realistic financial portfolio, as it considers many attributes such as risk, return and liquidity.

  3. Industry Research and Recommendations for Small Buildings and Small Portfolios

    Energy Technology Data Exchange (ETDEWEB)

    Langner, Rois [National Renewable Energy Lab. (NREL), Golden, CO (United States); Hendron, Bob [National Renewable Energy Lab. (NREL), Golden, CO (United States); Pless, Shanti [National Renewable Energy Lab. (NREL), Golden, CO (United States); Huppert, Mark [National Trust for Historic Preservation, Washington, DC (United States); Cochrane, Ric [National Trust for Historic Preservation, Washington, DC (United States)

    2013-12-01

    Small buildings have been left behind in the energy efficiency marketplace because financial and technical resources have flowed to larger commercial buildings. DOE's Building Technologies Office works with the commercial building industry to accelerate the uptake of energy efficiency technologies and techniques in existing and new commercial buildings (DOE 2013). BTO recognizes the SBSP sector'spotential for significant energy savings and the need for investments in resources that are tailored to this sector's unique needs. The industry research and recommendations described in this report identify potential approaches and strategic priorities that BTO could explore over the next 3-5 years that will support the implementation of high-potential energy efficiency opportunities for thisimportant sector. DOE is uniquely positioned to provide national leadership, objective information, and innovative tools, technologies, and services to support cost-effective energy savings in the fragmented and complex SBSP sector. Properly deployed, the DOE effort could enhance and complement current energy efficiency approaches. Small portfolios are loosely and qualitatively defined asportfolios of buildings that include only a small number of small buildings. This distinction is important because the report targets portfolio owners and managers who generally do not have staff and other resources to track energy use and pursue energy efficiency solutions.

  4. The Shifting Climate Portfolio of the Greater Yellowstone Area.

    Science.gov (United States)

    Sepulveda, Adam J; Tercek, Michael T; Al-Chokhachy, Robert; Ray, Andrew M; Thoma, David P; Hossack, Blake R; Pederson, Gregory T; Rodman, Ann W; Olliff, Tom

    2015-01-01

    Knowledge of climatic variability at small spatial extents (Yellowstone Area (GYA) of the interior western United States. This important biological reserve is the largest protected area in the Lower 48 states and provides critical habitat for some of the world's most iconic wildlife. We focused our analyses on temporal shifts and shape changes in the annual distributions of seasonal minimum and maximum air temperatures among valley-bottom and higher elevation sites from 1948-2012. We documented consistent patterns of warming since 1948 at all 50 sites, with the most pronounced changes occurring during the Winter and Summer when minimum and maximum temperature distributions increased. These shifts indicate more hot temperatures and less cold temperatures would be expected across the GYA. Though the shifting statistical distributions indicate warming, little change in the shape of the temperature distributions across sites since 1948 suggest the GYA has maintained a diverse portfolio of temperatures within a year. Spatial heterogeneity in temperatures is likely maintained by the GYA's physiographic complexity and its large size, which encompasses multiple climate zones that respond differently to synoptic drivers. Having a diverse portfolio of temperatures may help biological reserves spread the extinction risk posed by climate change.

  5. The Shifting Climate Portfolio of the Greater Yellowstone Area.

    Directory of Open Access Journals (Sweden)

    Adam J Sepulveda

    Full Text Available Knowledge of climatic variability at small spatial extents (< 50 km is needed to assess vulnerabilities of biological reserves to climate change. We used empirical and modeled weather station data to test if climate change has increased the synchrony of surface air temperatures among 50 sites within the Greater Yellowstone Area (GYA of the interior western United States. This important biological reserve is the largest protected area in the Lower 48 states and provides critical habitat for some of the world's most iconic wildlife. We focused our analyses on temporal shifts and shape changes in the annual distributions of seasonal minimum and maximum air temperatures among valley-bottom and higher elevation sites from 1948-2012. We documented consistent patterns of warming since 1948 at all 50 sites, with the most pronounced changes occurring during the Winter and Summer when minimum and maximum temperature distributions increased. These shifts indicate more hot temperatures and less cold temperatures would be expected across the GYA. Though the shifting statistical distributions indicate warming, little change in the shape of the temperature distributions across sites since 1948 suggest the GYA has maintained a diverse portfolio of temperatures within a year. Spatial heterogeneity in temperatures is likely maintained by the GYA's physiographic complexity and its large size, which encompasses multiple climate zones that respond differently to synoptic drivers. Having a diverse portfolio of temperatures may help biological reserves spread the extinction risk posed by climate change.

  6. The Two Defaults Scenario for Stressing Credit Portfolio Loss Distributions

    Directory of Open Access Journals (Sweden)

    Dirk Tasche

    2015-12-01

    Full Text Available The impact of a stress scenario of default events on the loss distribution of a credit portfolio can be assessed by determining the loss distribution conditional on these events. While it is conceptually easy to estimate loss distributions conditional on default events by means of Monte Carlo simulation, it becomes impractical for two or more simultaneous defaults as then the conditioning event is extremely rare. We provide an analytical approach to the calculation of the conditional loss distribution for the CreditRisk + portfolio model with independent random loss given default distributions. The analytical solution for this case can be used to check the accuracy of an approximation to the conditional loss distribution whereby the unconditional model is run with stressed input probabilities of default (PDs. It turns out that this approximation is unbiased. Numerical examples, however, suggest that the approximation may be seriously inaccurate but that the inaccuracy leads to overestimation of tail losses and, hence, the approach errs on the conservative side.

  7. Properties of Risk Measures of Generalized Entropy in Portfolio Selection

    Directory of Open Access Journals (Sweden)

    Rongxi Zhou

    2017-12-01

    Full Text Available This paper systematically investigates the properties of six kinds of entropy-based risk measures: Information Entropy and Cumulative Residual Entropy in the probability space, Fuzzy Entropy, Credibility Entropy and Sine Entropy in the fuzzy space, and Hybrid Entropy in the hybridized uncertainty of both fuzziness and randomness. We discover that none of the risk measures satisfy all six of the following properties, which various scholars have associated with effective risk measures: Monotonicity, Translation Invariance, Sub-additivity, Positive Homogeneity, Consistency and Convexity. Measures based on Fuzzy Entropy, Credibility Entropy, and Sine Entropy all exhibit the same properties: Sub-additivity, Positive Homogeneity, Consistency, and Convexity. These measures based on Information Entropy and Hybrid Entropy, meanwhile, only exhibit Sub-additivity and Consistency. Cumulative Residual Entropy satisfies just Sub-additivity, Positive Homogeneity, and Convexity. After identifying these properties, we develop seven portfolio models based on different risk measures and made empirical comparisons using samples from both the Shenzhen Stock Exchange of China and the New York Stock Exchange of America. The comparisons show that the Mean Fuzzy Entropy Model performs the best among the seven models with respect to both daily returns and relative cumulative returns. Overall, these results could provide an important reference for both constructing effective risk measures and rationally selecting the appropriate risk measure under different portfolio selection conditions.

  8. Designing for Immediate Play

    DEFF Research Database (Denmark)

    Pichlmair, Martin; Mech, Lena; Sicart, Miguel Angel

    2017-01-01

    This paper is concerned with designing for immediate play, the experience that a player has when joining a game designed for being played without particular preparation. Museum games, urban games, casual sports, and ad-hoc multiplayer video games are kinds of games that facilitate immediate play...... offer using examples and expert opinions. While most practices and game examples mentioned in this paper are from non-digital games, a special focus is put on the role of technology in immediately playable experiences. Still, the examined design dimensions are independent of the technological foundation...... of the game. This paper provides a starting point for designing better immediate play situations....

  9. Technology Alignment and Portfolio Prioritization (TAPP)

    Science.gov (United States)

    Funaro, Gregory V.; Alexander, Reginald A.

    2015-01-01

    Technology Alignment and Portfolio Prioritization (TAPP) is a method being developed by the Advanced Concepts Office, at NASA Marshall Space Flight Center. The TAPP method expands on current technology assessment methods by incorporating the technological structure underlying technology development, e.g., organizational structures and resources, institutional policy and strategy, and the factors that motivate technological change. This paper discusses the methods ACO is currently developing to better perform technology assessments while taking into consideration Strategic Alignment, Technology Forecasting, and Long Term Planning.

  10. OPTIMAL PORTFOLIOS IN DEFINED CONTRIBUTION PENSION SYSTEMS

    OpenAIRE

    EDUARDO WALKER

    2006-01-01

    We study optimal portfolios for defined contribution (possibly mandatory) pension systems, which maximize expected pensions subject to a risk level. By explicitly considering the present value of future individual contributions and changing the risk-return numeraire to future pension units we obtain interesting insights, consistent with the literature, in a simpler context. Results naturally imply that the local indexed (inflation-adjusted) currency is the benchmark and that the investment ho...

  11. Coherent diversification in corporate technological portfolios

    OpenAIRE

    Pugliese, Emanuele; Napolitano, Lorenzo; Zaccaria, Andrea; Pietronero, Luciano

    2017-01-01

    We study the relationship between firms' performance and their technological portfolios using tools borrowed from the complexity science. In particular, we ask whether the accumulation of knowledge and capabilities related to a coherent set of technologies leads firms to experience advantages in terms of productive efficiency. To this end, we analyzed both the balance sheets and the patenting activity of about 70 thousand firms that have filed at least one patent over the period 2004-2013. Fr...

  12. portfolio optimization based on nonparametric estimation methods

    Directory of Open Access Journals (Sweden)

    mahsa ghandehari

    2017-03-01

    Full Text Available One of the major issues investors are facing with in capital markets is decision making about select an appropriate stock exchange for investing and selecting an optimal portfolio. This process is done through the risk and expected return assessment. On the other hand in portfolio selection problem if the assets expected returns are normally distributed, variance and standard deviation are used as a risk measure. But, the expected returns on assets are not necessarily normal and sometimes have dramatic differences from normal distribution. This paper with the introduction of conditional value at risk ( CVaR, as a measure of risk in a nonparametric framework, for a given expected return, offers the optimal portfolio and this method is compared with the linear programming method. The data used in this study consists of monthly returns of 15 companies selected from the top 50 companies in Tehran Stock Exchange during the winter of 1392 which is considered from April of 1388 to June of 1393. The results of this study show the superiority of nonparametric method over the linear programming method and the nonparametric method is much faster than the linear programming method.

  13. Venture capital and efficiency of portfolio companies

    Directory of Open Access Journals (Sweden)

    A. Thillai Rajan

    2010-12-01

    Full Text Available Venture Capital (VC has emerged as the dominant source of finance for entrepreneurial and early stage businesses, and the Indian VC industry in particular has clocked the fastest growth rate globally. Academic literature reveals that VC funded companies show superior performance to non VC funded companies. However, given that venture capitalists (VCs select and fund only the best companies, how much credit can they take for the performance of the companies they fund? Do the inherent characteristics of the firm result in superior performance or do VCs contribute to the performance of the portfolio company after they have entered the firm? A panel that comprised VCs, an entrepreneur and an academic debated these and other research questions on the inter-relationships between VC funding and portfolio firm performance. Most empirical literature indicates that the value addition effect dominates the selection effect in accounting for the superior performance of VC funded companies. The panel discussion indicates that the context as well as the experience of the General Partners in the VC firms can influence the way VCs contribute to the efficiency of their portfolio companies.

  14. Portfolio selection theory and wildlife management

    Directory of Open Access Journals (Sweden)

    JW Hearne

    2008-12-01

    Full Text Available With a strong commercial incentive driving the increase in game ranching in Southern Africa the need has come for more advanced management tools. In this paper the potential of Portfolio Selection Theory to determine the optimal mix of species on game ranches is explored. Land, or the food it produces, is a resource available to invest. We consider species as investment choices. Each species has its own return and risk profile. The question arises as to what proportion of the resource available should be invested in each species. We show that if the objective is to minimise risk for a given return, then the problem is analogous to the Portfolio Selection Problem. The method is then implemented for a typical game ranch. We show that besides risk and return objectives, it is necessary to include an additional objective so as to ensure sufficient species to maintain the character of a game ranch. Some other points of difference from the classical Portfolio Selection problem are also highlighted and discussed.

  15. Portfolio at Tertiary Level – Lifelong Learning Tool

    Directory of Open Access Journals (Sweden)

    Galina Kavaliauskienė

    2011-04-01

    Full Text Available The use of electronic language portfolios has been preferable to the use of common paper portfolios for ease of application – there is no need for accumulating a number of files of written papers, which solves the problem of storing space and, to some extent, helps reduce students’ and teachers’ workload.The study investigated learners’ perceptions of employing electronic language portfolios for conducting various assignments in English for Specific Purposes. The research involved university students of different specializations. Learners’ experience of employing portfolios and opinions on their benefits for improving language skills have been analyzed and statistically treated using SPSS software. The results show that students are positive about application of electronic portfolios in ESP classes. The use of online portfolios for various assignments helps teachers foster students’ learning, encourages critical thinking, develops creativity, motivates learners to use digital technology, encourages collaboration of learners, and in the long run, leads to lifelong learning.

  16. Establishing a portfolio of quality-improvement projects in pediatric surgery through advanced improvement leadership systems.

    Science.gov (United States)

    Gerrein, Betsy T; Williams, Christina E; Von Allmen, Daniel

    2013-01-01

    Formal quality-improvement (QI) projects require that participants are educated in QI methods to provide them with the capability to carry out successful, meaningful work. However, orchestrating a portfolio of projects that addresses the strategic mission of the institution requires an extension of basic QI training to provide the division or business unit with the capacity to successfully develop and manage the portfolio. Advanced Improvement Leadership Systems is a program to help units create a meaningful portfolio. This program, used by the Division of Pediatric General and Thoracic Surgery at Cincinnati Children's Hospital Medical Center, helped establish a portfolio of targeted QI projects designed to achieve outstanding outcomes at competitive costs in multiple clinical areas aligned with the institution's strategic goals (improve disease-based outcomes, patient safety, flow, and patient and family experience). These objectives are addressed in an institutional strategic plan built around 5 core areas: Safety, Productivity, Care Coordination and Outcomes, Patient and Family Experience, and Value. By combining the portfolio of QI projects with improvements in the divisional infrastructure, effective improvement efforts were realized throughout the division. In the 9 months following the program, divisional capability resulted in a 16.5% increase (5.7% to 22.2%) of formally trained staff working on 10 QI teams. Concurrently, a leadership team, designed to coordinate projects, remove barriers, and provide technical support, provided the capacity to pursue this ongoing effort. The Advanced Improvement Leadership Systems program increased the Division's efficiency and effectiveness in pursing the QI mission that is integral at our hospital.

  17. Why do Dolphins Play?

    Directory of Open Access Journals (Sweden)

    Stan A. Kuczaj

    2014-05-01

    Full Text Available Play is an important aspect of dolphin life, perhaps even an essential one. Play provides opportunities for dolphin calves to practice and perfect locomotor skills, including those involved in foraging and mating strategies and behaviors. Play also allows dolphin calves to learn important social skills and acquire information about the characteristics and predispositions of members of their social group, particularly their peers. In addition to helping dolphin calves learn how to behave, play also provides valuable opportunities for them to learn how to think. The ability to create and control play contexts enables dolphins to create novel experiences for themselves and their playmates under relatively safe conditions. The behavioral variability and individual creativity that characterize dolphin play yield ample opportunities for individual cognitive development as well as social learning, and sometimes result in innovations that are reproduced by other members of the group. Although adults sometimes produce innovative play, calves are the primary source of such innovations. Calves are also more likely to imitate novel play behaviors than are adults, and so calves contribute significantly to both the creation and transmission of novel play behaviors within a group. Not unexpectedly, then, the complexity of dolphin play increases with the involvement of peers. As a result, the opportunity to observe and/or interact with other dolphin calves enhances the effects of play on the acquisition and maintenance of flexible problem solving skills, the emergence and strengthening of social and communicative competencies, and the establishment of social relationships. It seems that play may have evolved to help young dolphins learn to adapt to novel situations in both their physical and social worlds, the beneficial result being a set of abilities that increases the likelihood that an individual survives and reproduces.

  18. Constant Proportion Portfolio Insurance Strategy in Southeast European Markets

    OpenAIRE

    Agić-Šabeta, Elma

    2016-01-01

    Background: In today’s highly volatile and unpredictable market conditions, there are very few investment strategies that may offer a certain form of capital protection. The concept of portfolio insurance strategies presents an attractive investment opportunity. Objectives: The main objective of this article is to test the use of portfolio insurance strategies in Southeast European (SEE) markets. A special attention is given to modelling non-risky assets of the portfolio. Methods/Approach: Mo...

  19. Electronic portfolio motivational factors from students’ perspective: A qualitative study

    OpenAIRE

    Rokhsareh Mobarhan; Azizah Abdul Rahman; Mojib Majidi

    2015-01-01

    Electronic portfolio (e-Portfolio) is known as an electronic learning record which collects the learning evidences, reflections and accomplishments. In fact, it tells the story of learning achievements. It is an important tool for students, lecturers, administrators and faculties to monitor the learning outcomes. Similarly to other technologies, e-Portfolio is also considered successful, if it is used by students continuously. Previous researches showed the importance of intrinsic and extrins...

  20. Portfolio Methods for Optimal Planning: an Empirical Analysis

    OpenAIRE

    Rizzini, Mattia; Fawcett, Chris; Vallati, Mauro; Gerevini, Alfonso Emilio; Hoos, Holger

    2015-01-01

    Combining the complementary strengths of several algorithms through portfolio approaches has been demonstrated to be effective in solving a wide range of AI problems. Notably, portfolio techniques have been prominently applied to suboptimal (satisficing) AI planning. Here, we consider the construction of sequential planner portfolios for (domain- independent) optimal planning. Specifically, we introduce four techniques (three of which are dynamic) for per-instance planner schedule generation ...

  1. Inquiry into the Conceptual Dimensions of Project Portfolio Management

    OpenAIRE

    Pedro Bruno de Souza; Jorge Carneiro; Rodrigo Bandeira-de-Mello

    2015-01-01

    Although much has been written about how to manage individual projects, there is still little guidance on how to evaluate the “quality” of project portfolio management itself, that is, the degree of “accomplishment” of the process by which the project portfolio is formed and run. This study addresses this gap by employing a q ualitative approach to uncover managerial perceptions about what is encompassed by project portfolio management and how the this construct s...

  2. Political Risk and the Benefits of International Portfolio Diversification

    OpenAIRE

    Jean-Claude Cosset; Jean-Marc Suret

    1995-01-01

    This paper examines the benefits of portfolio investment in the stock markets of politically risky countries by evaluating the effects of political risk constraints on the performance of a portfolio of international stocks. We use monthly data on political risk ratings and stock returns for a sample of thirty-six countries from April 1982 to December 1991. Ex-post and ex-ante portfolio selection strategies are developed to assess the gains from international diversification. Efficient sets ar...

  3. Digital portfolio for learning: A new communication channel for education

    Directory of Open Access Journals (Sweden)

    Judit Coromina

    2011-04-01

    Full Text Available Purpose: The Catalonian Government has the intention of introducing the digital portfolio before 2017, an initiative related to new approaches for learning. Taking in consideration the increasing interest for digital portfolio as a new communication channel for education, the article aims are: on the one hand to describe how the digital portfolio works and on the other hand, to identify a list of criteria that should be useful for educative centers to select the best application to create the digital portfolio according to their needs.Design/methodology/approach: Firstly, a theoretical framework for portfolio functioning is described. After, applications to support the digital portfolio are classified. Next, a requirement analysis on an ideal application to support the portfolio is made, according to those phases for the portfolio creation identified in the theoretical framework. Lastly, a list of criteria is established to select the application for creating the digital portfolio.Findings and Originality/value: The article contributes to structure the portfolio creation process in some stages and phases in a wider way that it is described in the literature. In addition, a list of criteria is defined to help educative centers to select the application for managing the portfolio that fits better with their objectives. These criteria have been obtained with an exhaustive methodology.Research limitations/implications: In order to put in practice the identified criteria it is proposed to complete the multi-criteria decision model in a new study. It should include processes to weigh criteria and define normalizations. Afterwards it would be able to analyze the value of the model studying the satisfaction for using it by a sample of educative centers.Practical implications: The list of criteria identified should facilitate the selection of the more adequate application to create the learning portfolio to the educative centers, according to their

  4. The modern portfolio theory applied to wind farm investments

    OpenAIRE

    Chaves-Schwinteck, Patricia

    2013-01-01

    In a context of research of alternatives to improve investments in renewable energy sources, this work addresses the Modern Portfolio Theory when applied to investments in wind farms. The Modern Portfolio Theory describes how the combination of assets subject to different characteristics of risk x return leads to optimized portfolios of investments. Grounded on the principles of diversification, the theory has been originally developed to assess investments in financial assets. In view of the...

  5. MODERN THEORETICAL APPROACHES CREDIT PORTFOLIO QUALITY MANAGEMENT OF COMMERCIAL BANK

    Directory of Open Access Journals (Sweden)

    Victoria Lisnic

    2016-12-01

    Full Text Available Credit portfolio management means the totality of financial and economic decisions realization aimed at achieving optimal ratio of performance indicators of loan portfolio. If low-quality loans increase, the reduction of productive assets volume and, respectively, profitability from banking lending. In extreme cases a such situation could lead to bank bankruptcy. At present bank loan portfolio quality assessment is an important component of bank management.

  6. Engagement with Electronic Portfolios: Challenges from the Student Perspective

    OpenAIRE

    David Tosh; Tracy Penny Light; Kele Fleming; Jeff Haywood

    2005-01-01

    Much of the evidence and research available on the use of e-portfolios focuses on faculty and institutional perspectives and/or consists mainly of anecdotes about how useful the e-portfolio has been to learners. While it is generally agreed that e-portfolios have great potential to engage students and promote deep learning, the research that has been conducted to date focuses very little on student perceptions of value of the e-portfolio for their learning. If students do not accept the e-por...

  7. Econometrics and Metaheuristic Optimization Approaches to International Portfolio Diversification

    National Research Council Canada - National Science Library

    Gholamreza Mansourfar

    2013-01-01

      Using advanced techniques of econometrics and a metaheuristic optimization approach, this study attempts to evaluate the potential advantages of international portfolio diversification for East Asian...

  8. Portfolios and assessment of competence: a review of the literature.

    Science.gov (United States)

    McMullan, Mirjam; Endacott, Ruth; Gray, Morag A; Jasper, Melanie; Miller, Carolyn M L; Scholes, Julie; Webb, Christine

    2003-02-01

    The literature review presented here was conducted as part of an English National Board for Nursing, Midwifery and Health Visiting funded project to evaluate the use of portfolios in the assessment of learning and competence. Initial consideration of the topic revealed the need to clarify the terminology and approaches used to assess competence using portfolios, and therefore the literature review was conducted to inform the study. To clarify definitions, theoretical bases and approaches to competence and the use of portfolios in the assessment of learning and competence in nursing education. A comprehensive literature review was conducted using the CINAHL and MEDLINE databases and the keywords competenc*, portfolios and nursing. Articles published in the period 1989-2001 in English were obtained and their reference lists scrutinized to identify additional references. Twenty articles were found using a combination of the keywords competenc* and portfolios, and 52 using the combination portfolios and nurse education. Articles were included in the review if they focused on the use of portfolios in nursing, and those concerned with professional or transitional portfolios were excluded. This article will analyse definitions of and approaches to competence and its measurement and to portfolios and their use as discussed in the articles identified. Three approaches to competence were identified, each with its appropriate forms of assessment. With regard to portfolios, a number of definitions were again found, but there was a consensus that the theoretical basis of their use is theories of adult learning. A number of reasons for and advantages and disadvantages of their use were found, as well as varying ideas about what a portfolios should consist of and how it should be assessed. A holistic approach to competence seems to be compatible with the use of portfolios to assess competence in nursing students, but the concept and its implementation is still evolving. A variety

  9. On the microeconomic problems studied by portfolio theory

    Science.gov (United States)

    Nikonov, Oleg; Medvedeva, Marina

    2012-09-01

    In the paper we consider economically motivated problems, which are treated with the help of methods of portfolio theory that goes back to the papers by H. Markowitz [1] and J. Tobin [2]. We show that the portfolio theory initially developed for risky securities (stocks) could be applied to other objects. In the present paper we consider several situations where such an application is reasonable and seems to be fruitful. Namely, we consider the problems of constructing the efficient portfolio of banking services and the portfolio of counteragents of a firm.

  10. An Empirical Exploration of the Antecedents and Outcomes of NPD Portfolio Success

    NARCIS (Netherlands)

    Kester, L.; Hultink, H.J.; Griffin, A.

    2013-01-01

    The manuscript first combines theory and previous empirical findings to build a model of new product development portfolio success. Because relationships between product development portfolio decision-making effectiveness, portfolio success and firm-level success have not previously been

  11. 7 CFR 4290.760 - How a change in size or activity of a Portfolio Concern affects the RBIC and the Portfolio Concern.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 15 2010-01-01 2010-01-01 false How a change in size or activity of a Portfolio Concern affects the RBIC and the Portfolio Concern. 4290.760 Section 4290.760 Agriculture Regulations of... size or activity of a Portfolio Concern affects the RBIC and the Portfolio Concern. (a) Effect on RBIC...

  12. Postoptimality Analysis in the Selection of Technology Portfolios

    Science.gov (United States)

    Adumitroaie, Virgil; Shelton, Kacie; Elfes, Alberto; Weisbin, Charles R.

    2006-01-01

    This slide presentation reviews a process of postoptimally analysing the selection of technology portfolios. The rationale for the analysis stems from the need for consistent, transparent and auditable decision making processes and tools. The methodology is used to assure that project investments are selected through an optimization of net mission value. The main intent of the analysis is to gauge the degree of confidence in the optimal solution and to provide the decision maker with an array of viable selection alternatives which take into account input uncertainties and possibly satisfy non-technical constraints. A few examples of the analysis are reviewed. The goal of the postoptimality study is to enhance and improve the decision-making process by providing additional qualifications and substitutes to the optimal solution.

  13. Manpower and portfolio of European ENT.

    Science.gov (United States)

    Luxenberger, W; Lahousen, T; Mollenhauer, H; Freidl, W

    2014-03-01

    conditions like acute hypacusis, dysphonia and hemoptysis, significant differences correlating to the ENT doctors/inhabitants ratio in waiting times for an ENT appointment were found. Estimated frequencies of different ENT tasks in everyday routine were extremely diverse as well, however, without detectable correlations to the ENT doctors/inhabitants ratio. In countries like Great Britain, Ireland, Malta and The Netherlands ENT doctors are primarily seen and serving as surgeons. In most Central European countries like Germany, Austria, Czech Republic, Poland and Slovakia, ENT doctors aside of surgery are also dealing with high percentages of conservative medicine, which may include vast fields like the management of Allergology, Phoniatrics, Audiology, etc. In some countries ENT doctors are even playing a significant role in primary health care as well. These various portfolios of ENT may be one explanation for the huge difference in numbers of European ENT manpower.

  14. Development of a portfolio of learning for postgraduate family medicine training in South Africa: a Delphi study.

    Science.gov (United States)

    Jenkins, Louis; Mash, Bob; Derese, Anselme

    2012-03-03

    Within the 52 health districts in South Africa, the family physician is seen as the clinical leader within a multi-professional district health team. Family physicians must be competent to meet 90% of the health needs of the communities in their districts. The eight university departments of Family Medicine have identified five unit standards, broken down into 85 training outcomes, for postgraduate training. The family medicine registrar must prove at the end of training that all the required training outcomes have been attained. District health managers must be assured that the family physician is competent to deliver the expected service. The Colleges of Medicine of South Africa (CMSA) require a portfolio to be submitted as part of the uniform assessment of all registrars applying to write the national fellowship examinations. This study aimed to achieve a consensus on the contents and principles of the first national portfolio for use in family medicine training in South Africa. A workshop held at the WONCA Africa Regional Conference in 2009 explored the purpose and broad contents of the portfolio. The 85 training outcomes, ideas from the WONCA workshop, the literature, and existing portfolios in the various universities were used to develop a questionnaire that was tested for content validity by a panel of 31 experts in family medicine in South Africa, via the Delphi technique in four rounds. Eighty five content items (national learning outcomes) and 27 principles were tested. Consensus was defined as 70% agreement. For those items that the panel thought should be included, they were also asked how to provide evidence for the specific item in the portfolio, and how to assess that evidence. Consensus was reached on 61 of the 85 national learning outcomes. The panel recommended that 50 be assessed by the portfolio and 11 should not be. No consensus could be reached on the remaining 24 outcomes and these were also omitted from the portfolio. The panel recommended

  15. Methodical bases of accounting and analytical support for the management of credit portfolio of the bank

    Directory of Open Access Journals (Sweden)

    A.M. Gerasimovich

    2015-03-01

    Full Text Available Solved how to optimize the system of accounting and analytical indicators to assess the level of risk and the effectiveness of the Bank's credit activity, on the basis of scale, scope and structure of the credit portfolio; the turnover of credit investments; the problematical character of the loan portfolio and the level of risk and security of the loan portfolio. Exploring the possibility of accounting on the basis of which analysis calculated metrics and evaluation of significance proposed, in contrast to the current Grad C system with more than 50 indicators, the most informative in the amount of 20–25, which allow daily operational way to assess the level of credit portfolio management of the Bank. This contributes to the daily detailed sub-accounts trial balance balance sheet, which consists of all banks and provide the National Bank of Ukraine. So, the most reasonable is the performance in terms of scale and structure – percentage changes; turnover rates – the rate in days; problem – percentage problems; credit risk – factor security loans; management effectiveness factors: the economy, profitability and efficiency.

  16. Informed public choices for low-carbon electricity portfolios using a computer decision tool.

    Science.gov (United States)

    Mayer, Lauren A Fleishman; Bruine de Bruin, Wändi; Morgan, M Granger

    2014-04-01

    Reducing CO2 emissions from the electricity sector will likely require policies that encourage the widespread deployment of a diverse mix of low-carbon electricity generation technologies. Public discourse informs such policies. To make informed decisions and to productively engage in public discourse, citizens need to understand the trade-offs between electricity technologies proposed for widespread deployment. Building on previous paper-and-pencil studies, we developed a computer tool that aimed to help nonexperts make informed decisions about the challenges faced in achieving a low-carbon energy future. We report on an initial usability study of this interactive computer tool. After providing participants with comparative and balanced information about 10 electricity technologies, we asked them to design a low-carbon electricity portfolio. Participants used the interactive computer tool, which constrained portfolio designs to be realistic and yield low CO2 emissions. As they changed their portfolios, the tool updated information about projected CO2 emissions, electricity costs, and specific environmental impacts. As in the previous paper-and-pencil studies, most participants designed diverse portfolios that included energy efficiency, nuclear, coal with carbon capture and sequestration, natural gas, and wind. Our results suggest that participants understood the tool and used it consistently. The tool may be downloaded from http://cedmcenter.org/tools-for-cedm/informing-the-public-about-low-carbon-technologies/ .

  17. From the microscope to the macroscopic: changing from the bench to portfolio management.

    Science.gov (United States)

    Sachs, Michael

    2017-11-01

    A role in portfolio management is ideal for individuals who enjoy tackling challenges that have both technical and business components. Portfolio management provides objective insights and analytics to support research and development decision making and planning. Successful practitioners usually have strong analytical abilities developed from a background in either science or business. Portfolio managers often advise key decision makers at both the team and senior management level and thus require robust oral, written, and interpersonal communication skills. Day-to-day tasks are rarely the same, and comfort with change and the unknown is essential. Here I will discuss my experience as a portfolio manager in a larger biopharmaceutical company and the skills from academic research I leveraged to make the transition. © 2017 Sachs. This article is distributed by The American Society for Cell Biology under license from the author(s). Two months after publication it is available to the public under an Attribution–Noncommercial–Share Alike 3.0 Unported Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/3.0).

  18. Use of Modern Methods of Credit Portfolio Risk Management in Commercial Banks of Russian Federation

    National Research Council Canada - National Science Library

    Dmitrii S. Melnyk

    2013-01-01

    The article deals with the structure and factors of credit portfolio risk, analyses existing models of portfolio risk assessment and develops recommendations on the implementation of risk management...

  19. Validity of portfolio assessment: which qualities determine ratings?

    Science.gov (United States)

    Driessen, Erik W; Overeem, Karlijn; van Tartwijk, Jan; van der Vleuten, Cees P M; Muijtjens, Arno M M

    2006-09-01

    The portfolio is becoming increasingly accepted as a valuable tool for learning and assessment. The validity of portfolio assessment, however, may suffer from bias due to irrelevant qualities, such as lay-out and writing style. We examined the possible effects of such qualities in a portfolio programme aimed at stimulating Year 1 medical students to reflect on their professional and personal development. In later curricular years, this portfolio is also used to judge clinical competence. We developed an instrument, the Portfolio Analysis Scoring Inventory, to examine the impact of form and content aspects on portfolio assessment. The Inventory consists of 15 items derived from interviews with experienced mentors, the literature, and the criteria for reflective competence used in the regular portfolio assessment procedure. Forty portfolios, selected from 231 portfolios for which ratings from the regular assessment procedure were available, were rated by 2 researchers, independently, using the Inventory. Regression analysis was used to estimate the correlation between the ratings from the regular assessment and those resulting from the Inventory items. Inter-rater agreement ranged from 0.46 to 0.87. The strongest predictor of the variance in the regular ratings was 'quality of reflection' (R 0.80; R2 66%). No further items accounted for a significant proportion of variance. Irrelevant items, such as writing style and lay-out, had negligible effects. The absence of an impact of irrelevant criteria appears to support the validity of the portfolio assessment procedure. Further studies should examine the portfolio's validity for the assessment of clinical competence.

  20. Play Therapy in Elementary Schools

    Science.gov (United States)

    Landreth, Garry L.; Ray, Dee C.; Bratton, Sue C.

    2009-01-01

    Because the child's world is a world of action and activity, play therapy provides the psychologist in elementary-school settings with an opportunity to enter the child's world. In the play therapy relationship, toys are like the child's words and play is the child's language. Therefore, children play out their problems, experiences, concerns, and…

  1. Revitalizing Brands and Brand Portfolios: Essays on Brand and Brand Portfolio Management Strategies

    NARCIS (Netherlands)

    B.E. Depecik (Baris)

    2016-01-01

    markdownabstractHow should consumer products manufacturers and retailers keep their portfolio of brand offerings relevant and energetic when large numbers of new brands are continuously launched into a world of increasingly nonloyal customers with evolving needs? The harsh reality is, at a time when

  2. VaR Methodology Application for Banking Currency Portfolios

    Directory of Open Access Journals (Sweden)

    Daniel Armeanu

    2007-02-01

    Full Text Available VaR has become the standard measure that financial analysts use to quantify market risk. VaR measures can have many applications, such as in risk management, to evaluate the performance of risk takers and for regulatory requirements, and hence it is very important to develop methodologies that provide accurate estimates. In particular, the Basel Committee on Banking Supervision at the Bank for International Settlements imposes to financial institutions such as banks and investment firms to meet capital requirements based on VaR estimates. In this paper we determine VaR for a banking currency portfolio and respect rules of National Bank of Romania regarding VaR report.

  3. IT PROJECT PORTFOLIO MANAGEMENT: MODULARITY PROBLEMS IN A PUBLIC ORGANIZATION

    DEFF Research Database (Denmark)

    Hansen, Lars Kristian; Mengiste, Shegaw Anagaw

    2012-01-01

    As today’s public and private sector organizations heavily rely on Information Technology (IT) to provide faster cycle times and better services, IT Project Portfolio Management (IT PPM) has become a high priority issue. This research adopts engaged scholarship to investigate IT PPM practices......, and (2) what modularity mechanisms can be recommended to improve IT PPM? By drawing on the theory’s distinction between visible information and Hidden design parameters five modularity problems are identified: (1) Lack of operational levels strategies, (2) No systematic approach to manage IT project...... information across units and sub units, (3) No standard processes for submitting IT projects proposals, (4) No centralized IT project selection process, and (5) Lack of centralized follow up process on IT Projects across units and subunits. Based on data and by using recommendations from Modularity theory, we...

  4. [Services portfolio of a department of endocrinology and clinical nutrition].

    Science.gov (United States)

    Vicente Delgado, Almudena; Gómez Enterría, Pilar; Tinahones Madueño, Francisco

    2011-03-01

    Endocrinology and Clinical Nutrition are branches of Medicine that deal with the study of physiology of body glands and hormones and their disorders, intermediate metabolism of nutrients, enteral and parenteral nutrition, promotion of health by prevention of diet-related diseases, and appropriate use of the diagnostic, therapeutic, and preventive tools related to these disciplines. Development of Endocrinology and Clinical Nutrition support services requires accurate definition and management of a number of complex resources, both human and material, as well as adequate planning of the care provided. It is therefore essential to know the services portfolio of an ideal Department of Endocrinology and Clinical Nutrition because this is a useful, valid and necessary tool to optimize the available resources, to increase efficiency, and to improve the quality of care. Copyright © 2010 SEEN. Published by Elsevier Espana. All rights reserved.

  5. NPD project portfolio selection using reinvestment strategy in competitive environment

    Directory of Open Access Journals (Sweden)

    Alireza Ghassemi

    2018-01-01

    Full Text Available This study aims to design a new model for selecting most fitting new product development projects in a pool of projects. To catch the best model, we assume new products will be introduced to the competitive markets. Also, we suppose the revenue yielded by completed projects can be reinvested on implementation of other projects. Other sources of financing are borrowing loans from banks and initial capital of the firm. These limited resources determine most evaluated projects to be performed. Several types of interactions among different projects are considered to make the chosen projects more like a portfolio. In addition, some numerical examples from the real world are provided to demonstrate the applicability of the proposed model. These examples show how the particular considerations in the suggested model affect the results.

  6. Portfolio investment strategy based on Twitter sentiment

    OpenAIRE

    Lohman, Pontus

    2017-01-01

    This paper investigates if it is possible to create a portfolio investment strategy by looking at the sentiment (i.e. are they positive or negative) of twitter data for ten companies, five IT companies and five fashion companies. 764 340 tweets were collected during the study which spanned 60 trading days, and of those tweets, 483 946 where from the IT companies and the rest from the fashion companies. The tweets were collected in a Python program using Twitters API, and then analyzed and cla...

  7. A Real Options Perspective On R&D Portfolio Diversification

    NARCIS (Netherlands)

    S. van Bekkum (Sjoerd); H.P.G. Pennings (Enrico); J.T.J. Smit (Han)

    2009-01-01

    textabstractThis paper shows that the conditionality of investment decisions in R&D has a critical impact on portfolio risk, and implies that traditional diversification strategies should be reevaluated when a portfolio is constructed. Real option theory argues that research projects have

  8. A Real Options Perspective on R&D Portfolio Diversification

    NARCIS (Netherlands)

    S. van Bekkum (Sjoerd); H.P.G. Pennings (Enrico); J.T.J. Smit (Han)

    2008-01-01

    textabstractThis paper shows that the presence of conditional staging in R&D (Research & Development) has a critical impact on portfolio risk, and changes diversification arguments when a portfolio is constructed. When R&D projects exhibit option-like characteristics, correlation between projects

  9. Is Portfolio Assessment Effective in Improving Iranian EFL Students' Writing?

    Science.gov (United States)

    Sepasdar, Mansoreh; Esmaeeli, Hadiseh; Sherafat, Zahra

    2014-01-01

    The current study explored the effect of portfolio assessment on the improvement of the Iranian students' writing. Additionally, students' attitudes towards using portfolio were investigated. Participants of the study were 46 pre-intermediate Iranian male and female university students who were chosen from a larger group of 70 students. They were…

  10. Can Process Portfolios Affect Students' Writing Self-Efficacy?

    Science.gov (United States)

    Nicolaidou, Iolie

    2012-01-01

    Can process portfolios that support students in goal setting, reflection, self-evaluation and feedback have a positive impact on students' writing self-efficacy? This article presents the findings of a yearlong study conducted in three 4th grade elementary classes in Cyprus where paper-based and web-based portfolios were implemented to help…

  11. The Effects of Portfolio Assessment on Writing of EFL Students

    Science.gov (United States)

    Nezakatgoo, Behzad

    2011-01-01

    The primary focus of this study was to determine the effect of portfolio assessment on final examination scores of EFL students' writing skill. To determine the impact of portfolio-based writing assessment 40 university students who enrolled in composition course were initially selected and divided randomly into two experimental and control…

  12. Using the Teaching Portfolio to Anticipate Programmatic Assessment

    Science.gov (United States)

    Price, Kenneth R.

    2013-01-01

    Portfolios have long been a staple in professional writing courses: both in employment materials assignments and in entire classes that ask students to reflect on their experiential learning. Portfolios may also be used effectively in business communication teaching methods courses. This article details the justification and methodology for having…

  13. "Exercices de style": Developing Multiple Competencies through a Writing Portfolio

    Science.gov (United States)

    Paesani, Kate

    2006-01-01

    This article presents a writing portfolio project whose primary goal is to integrate the development of proficiency skills, content knowledge, and grammatical competence through literary study. Excerpts from Queneau's (1947) "Exercices de style," which tells the same story 99 times, serve as the basis for this portfolio project: These excerpts are…

  14. Through the Looking Glass...Preservice Professional Portfolios.

    Science.gov (United States)

    Davies, Mary Ann; Willis, Elizabeth

    2001-01-01

    Shares one institution's experiences using professional portfolios to help future teachers become effective practitioners and transition from school to work, describing the portfolio development process and exit presentations. Feedback from student questionnaires indicated that students overwhelmingly considered the invested time worthwhile, saw…

  15. Retirement Flexibility and Portfolio Choice in General Equilibrium

    NARCIS (Netherlands)

    Y. Adema (Yvonne); J. Bonenkamp (Jan); L. Meijdam (Lex)

    2011-01-01

    textabstractThis paper explores the interaction between retirement flexibility and portfolio choice in an overlapping-generations model of a closed economy. Retirement flexibility is often seen as a hedge against capital market risks which justifies more risky asset portfolios. We show, however,

  16. Maximizing Consensus in Portfolio Selection in Multicriteria Group Decision Making

    NARCIS (Netherlands)

    Michael, Emmerich T. M.; Deutz, A.H.; Li, L.; Asep, Maulana A.; Yevseyeva, I.

    2016-01-01

    This paper deals with a scenario of decision making where a moderator selects a (sub)set (aka portfolio) of decision alternatives from a larger set. The larger the number of decision makers who agree on a solution in the portfolio the more successful the moderator is. We assume that decision makers

  17. A Programmatic View of Portfolios for Urban Teacher Preparation

    Science.gov (United States)

    Pugach, Marleen C.; Longwell-Grice, Hope; Ford, Alison; Surma, Maria Andrea

    2008-01-01

    This exploratory study represents an analysis of 15 exit portfolios of students enrolled in a program to prepare teachers for urban schools. Portfolios were analyzed holistically across entries to determine the degree to which students integrated multiple concepts related to teaching in urban schools, including: asset/deficit perspectives,…

  18. The Role of Learning- and Presentation- Portfolios in Design Educations

    DEFF Research Database (Denmark)

    Thomsen, Bente Dahl; Ovesen, Nis

    2014-01-01

    Students that primarily study design through team-based projects often struggle to develop presentation portfolios that differentiate from the ones of other students. In the industry, design managers experience this as a problem, as they often receive job applications with presentation portfolios...

  19. The Student Mathematics Portfolio: Value Added to Student Preparation?

    Science.gov (United States)

    Burks, Robert

    2010-01-01

    This article describes key elements for educators to successfully implement a student mathematics portfolio in an undergraduate mathematics course. This article offers practical advice for implementing a student mathematics portfolio in a freshman precalculus course. We look at the potential value added to student class preparation and compare our…

  20. Complex Moving Parts: Assessment Systems and Electronic Portfolios

    Science.gov (United States)

    Larkin, Martha J.; Robertson, Royce L.

    2013-01-01

    The largest college within an online university of over 50,000 students invested significant resources in translating a complex assessment system focused on continuous improvement and national accreditation into an effective and efficient electronic portfolio (ePortfolio). The team building the system needed a model to address problems met…

  1. Functions of the learning portfolio in student teachers' learning process

    NARCIS (Netherlands)

    Mansvelder-Longayroux, Desiree D.; Beijaard, Douwe; Verloop, Nico; Vermunt, Jan D.

    In this study, we aimed to develop a framework that could be used to describe the value of the learning portfolio for the learning process of individual student teachers. Retrospective interviews with 21 student teachers were used, as were their portfolio-evaluation reports on their experiences Of

  2. Facilitating Students' Career Development in Psychology Courses: A Portfolio Project

    Science.gov (United States)

    Larkin, Judith E.; Pines, Harvey A.; Bechtel, Kate M.

    2002-01-01

    We describe the use of a career exploration portfolio in an Industrial/Organizational psychology course (n = 22) to address students' career needs and to develop academic competencies. Students independently completed a series of assignments outside of class, which led to the construction of a personalized career development portfolio. Evaluations…

  3. Demonstrating Competence: The Portfolio Interview for Management Positions.

    Science.gov (United States)

    Schindler, Pamela

    1997-01-01

    Describes how one college helps students assemble a portfolio for the job search. Claims that presenting physical evidence of competencies is better than just talking about them. Outlines the characteristics of a portfolio and its use in an interview. Reports the results of an employer survey of desired job skills. (RJM)

  4. Fault Tolerant Distributed Portfolio Optimization in Smart Grids

    DEFF Research Database (Denmark)

    Juelsgaard, Morten; Wisniewski, Rafal; Bendtsen, Jan Dimon

    2014-01-01

    This work considers a portfolio of units for electrical power production and the problem of utilizing it to maintain power balance in the electrical grid. We treat the portfolio as a graph in which the nodes are distributed generators and the links are communication paths. We present a distributed...

  5. Portfolio selection between rational and behavioral theories emergent markets case

    Directory of Open Access Journals (Sweden)

    Bouri Abdelfatteh

    2012-08-01

    Full Text Available The aim of this paper is to explore the determinants of Portfolio Choice under the investors, professionals and academics’ perception. We introduce an approach based on cognitive mapping technique with a series of semi-directive interviews. Among a sample of 30 Tunisian individuals, we propose tow different frameworks: a mean-variance framework and a behavioral framework. Each framework is oriented to capture the effect of some concepts as proposed by the mean-variance portfolio theory and the behavioral portfolio theory on the portfolio choice decision. The originality of this research paper is guaranteed since it traits the behavioral portfolio choice in emergent markets. In the best of our knowledge this is the first study in the Tunisian context that explores such area of research. Ours results show that the Tunisian investors behave as it prescribed by the behavioral portfolio theory. They use some concepts proposed by the rational mean-variance theory of portfolio choice but they are affected by their emotions and some others cognitive bias when constructing and managing they portfolio of assets.

  6. Literacy Portfolios: Looking Closely at Individual Learners. NCTE Reading Initiative.

    Science.gov (United States)

    Burke, Carolyn; Crafton, Linda; Egawa, Kathy; Long, Susi; Martens, Prisca; Mills, Heidi; Smith, Karen; Stephens, Diane

    The final result of this inquiry study will be the compilation of a Literacy Portfolio on a targeted reader. The data included within the portfolio will come from strategies and tools teachers were introduced to in Year One of the Reading Initiative and for which teachers gathered data both on themselves and on younger learners. The study revisits…

  7. The Portfolio Effect: Enhancing Turkish ELT Student-Teachers' Autonomy

    Science.gov (United States)

    Yildirim, Rana

    2013-01-01

    This article reports on the use of portfolios to develop ELT major student-teachers' autonomy. The research was carried out for 14 weeks with twenty-one 3rd grade student-teachers in the English Language Teaching Department of Cukurova University, Adana, Turkey. To evaluate the impact of portfolios on fostering the participants' autonomy, data…

  8. "Where Are the Children?" Personal Integrity and Reflective Teaching Portfolios

    Science.gov (United States)

    Berrill, Deborah P.; Whalen, Catherine

    2007-01-01

    This study chronicles a 2-year school wide portfolio initiative in a British elementary school, teacher resistance to the initiative, and factors that contributed to acceptance of the portfolio initiative. Critical components to teacher engagement in this context included teacher ownership of the process and product, a child-centred focus to the…

  9. Portfolio allocation under the vendor managed inventory: A Markov ...

    African Journals Online (AJOL)

    Portfolio allocation under the vendor managed inventory: A Markov decision process. ... Journal of Applied Sciences and Environmental Management ... a review of Markov decision processes and investigates its suitability for solutions to portfolio allocation problems under vendor managed inventory in an uncertain market ...

  10. A portfolio approach to bank management, content and evolution

    Directory of Open Access Journals (Sweden)

    Trifonov Dmitrij Anatol'evich

    2015-05-01

    Full Text Available The article studies the questions connected with the origin and the development of portfolio concept of commercial bank management. Special attention is paid to genesis of portfolio theory and the peculiarities of its practical use in bank management.

  11. Experimental Studies on Electronic Portfolios in Turkey: A Literature Review

    Science.gov (United States)

    Alan, Selahattin; Sünbül, Ali Murat

    2015-01-01

    In this study, a literature review was conducted about an individual's selected efforts, products stored in electronic format, and electronic portfolios that reflect the development and capacity of multimedia systems. In this context, relevant experimental studies performed in Turkey are collected to show e-portfolio application forms, their…

  12. Digital Portfolios: Powerful Marketing Tool for Communications Students

    Science.gov (United States)

    Nikirk, Martin

    2008-01-01

    A digital portfolio is a powerful marketing tool for young people searching for employment in the communication or interactive media fields. With a digital portfolio, students can demonstrate their skills at working with software tools, demonstrate appropriate use of materials, explain technical procedures, show an understanding of processes and…

  13. A Holocaust Exhibit ePortfolio: Actively Engaging Students

    Science.gov (United States)

    Jordine, Melissa

    2015-01-01

    California State University, Fresno is currently considering implementing an ePortfolio requirement for all undergraduate students. The ePortfolio requirement would be introduced primarily to engage students in a HIP (high impact practice) but would also be used for assessment purposes. As a faculty member and a member of the CSU Fresno ePortfolio…

  14. Validation of Competencies in E-Portfolios: A Qualitative Analysis

    Science.gov (United States)

    Zawacki-Richter, Olaf; Hanft, Anke; Baecker, Eva Maria

    2011-01-01

    This paper uses the example of an Internet-based advanced studies course to show how the portfolio method, as a competence-based form of examination, can be integrated in a blended learning design. Within the framework of a qualitative analysis of project portfolios, we examined which competencies are documented and how students reflected on their…

  15. Portfolio Peer Review: A Tool for Program Change.

    Science.gov (United States)

    Fleak, Sandra K.; Romine, Jeff; Gilchrist, Neil

    2003-01-01

    To achieve cultural change in a business management/accounting department, annual peer review of faculty portfolios documenting teaching, advising, service, and scholarship was instituted. The process improved the department's alignment with the university's mission. Scholarly productivity quadrupled from 1998-2001. Portfolio assessment had little…

  16. Enhancing Reflection Skills through Learning Portfolios: An Empirical Test

    Science.gov (United States)

    Scott, Susanne G.

    2010-01-01

    This article reports the findings of an empirical study of the effectiveness of portfolios as learning tools in a sample of MBAs. The results showed that portfolio use was positively related to reflection, defined here as the conscious awareness and questioning of personal experience, a search for alternative explanations and interpretations, and…

  17. Portfolio Diversification in the South-East European Equity Markets

    Directory of Open Access Journals (Sweden)

    Zaimovic Azra

    2017-04-01

    Full Text Available Diversification potential enables investors to manage their risk and decrease risk exposure. Good diversification policy is a safety net that prevents a portfolio from losing its value. A well-diversified portfolio consists of different categories of property with low correlations, while highly correlated markets have the feature of low possibilities for diversification. The biggest riddle in the world of investments is to find the optimal portfolio within a set of available assets with limited capital. There are numerous studies and mathematical models that deal with portfolio investment strategies. These strategies take advantage of diversification by spreading risk over several financial assets. Modern portfolio theory seeks to find the optimal model with the best results. This paper tries to identify relationships between returns of companies traded in South-East European equity markets. A Markowitz mean-variance (MV portfolio optimization method is used to identify possibilities for diversification among these markets and world leading capital markets. This research also offers insight into to the level of integration of South-East European equity markets. Principal component analysis (PCA is used to determine components that describe the strong patterns and co-movements of the dataset. Finally, we combined MV efficient frontier and equity, which represent PCA components, to draw conclusions. Our findings show that PC analysis substantially simplifies asset selection process in portfolio management. The results of the paper have practical applications for portfolio investors.

  18. ePortfolio as Pedagogy: Threshold Concepts for Curriculum Design

    Science.gov (United States)

    Lewis, Lyn

    2017-01-01

    The ePortfolio has been used in initial teacher education for its storage and presentation functions; however, its use as a pedagogic tool to enhance learning outcomes is less common. This study explored students' perceptions of ePortfolio and their learning in a Bachelor of Education (primary) programme at a New Zealand university. The research…

  19. E-Portfolios in Teacher Development: The Better Option?

    Science.gov (United States)

    Xerri, Daniel; Campbell, Caroline

    2016-01-01

    Following the introduction of print portfolios for teacher development in the ELT sector in Malta, this article discusses the findings of a small-scale study that highlighted teachers' views in relation to the possible future implementation of e-portfolios. It shows that while aware of the benefits of this tool, teachers have concerns about their…

  20. The Rise of Student Growth Portfolio Models in Tennessee

    Science.gov (United States)

    Stone, Zachary

    2017-01-01

    Over the last several years, Tennessee has rapidly expanded the use of student growth portfolio models for the purpose of teacher evaluation. Participation, both in the number of districts and teachers, has increased steadily since portfolios were first introduced during the 2011-12 school year, and we expect that participation will continue to…

  1. The Role of e-Portfolios in Supporting Productive Learning

    Science.gov (United States)

    Yang, Min; Tai, Mui; Lim, Cher Ping

    2016-01-01

    e-Portfolios are a form of authentic assessment with formative functions that include showcasing and sharing learning artifacts, documenting reflective learning processes, connecting learning across various stages and enabling frequent feedback for improvements. This paper examines how e-portfolios take up these formative roles to support…

  2. Idea Bank: Portfolios and Assessment in Music Classes

    Science.gov (United States)

    Silveira, Jason M.

    2013-01-01

    A portfolio can document student skills, abilities, growth, achievement, and attitudes. It can also reflect students' learning processes and subsequently guide new teaching strategies. Portfolio proponents have used these arguments to justify the time and organization needed to successfully implement them in their classrooms and in their school…

  3. Digital portfolio som metode og pædagogik

    DEFF Research Database (Denmark)

    Toft, Hanne; Luplau Schnefeld, Mette

    2004-01-01

    Artiklen præsenterer erfaringer med digital portfolio som didaktik og metode. Fokus er på kobling mellem didaktiske læreprocesser på en grunduddannelse og så understøttelse af disse via brug af en digital portfolio. Portfolioen adskiller en række forskellige dokumentsamlinger i privat og offentlig...

  4. The development of a reflective vascular training portfolio: Using a ...

    African Journals Online (AJOL)

    Reflective learning is considered an advanced form of learning; however, it has not been routinely incorporated into postgraduate and subspecialty educational surgical portfolios. The concept of training portfolios is not clearly understood by both trainees and teachers. Subspecialty surgical programmes rely heavily on ...

  5. Portfolio i et lærings- og uddannelsesperspektiv

    DEFF Research Database (Denmark)

    adjunktpædagogikum og underviserkvalificeringsforløb ved andre uddannelser. Af Lone Krogh Indførelse af portfolio som pædagogisk redskab og som struktur for dokumentation af kompetence i kandidatuddannelse - potentialer og udfordringer. Af Annette Lorentsen og Birthe Lund. Et organisatorisk perspektiv på portfolio...

  6. The stability of portfolio investment in stock crashes

    Science.gov (United States)

    Li, Yun-Xian; Qian, Zhen-Wei; Li, Jiang-Cheng; Tang, Nian-Sheng; Mei, Dong-Cheng

    2016-08-01

    The stability of portfolio investment in stock market crashes with Markowitz portfolio is investigated by the method of theoretical and empirical simulation. From numerical simulation of the mean escape time (MET), we conclude that: (i) The increasing number (Np) of stocks in Markowitz portfolio induces a maximum in the curve of MET versus the initial position; (ii) A critical value of Np in the behavior of MET versus the long-run variance or amplitude of volatility fluctuations maximumlly enhances the stability of portfolio investment. When Np takes value below the critical value, the increasing Np enhances the stability of portfolio investment, but restrains it when Np takes value above the critical value. In addition, a good agreement of both the MET and probability density functions of returns is found between real data and theoretical results.

  7. Applying Portfolio Selection: A Case of Indonesia Stock Exchange

    Directory of Open Access Journals (Sweden)

    Maria Praptiningsih

    2012-01-01

    Full Text Available This study has three objectives. First, we investigate whether Modern Portfolio Theory can be applied on the financial decisions that made by investors or individual in order to increase their wealth through investment activities. Second, we examine the real behavior of each asset in terms of capital assets pricing models. Third, we determine whether our portfolio is the best model to produce a higher return in a given level of risk or a lowest risk in a particular level of return. It is found that three different stocks listed in the Indonesia Stock Exchange have a positive relationship with market returns. The reactions of the investor regarding these stocks are not influenced by each other. Lastly, the minimum variance portfolio (MVP point which represents the single portfolio with the lowest possible level of standard deviation, occurs when the expected return of portfolio is approximately 2.2 percent at a standard deviation of 8.8 percent.

  8. Portfolio optimization for index tracking modelling in Malaysia stock market

    Science.gov (United States)

    Siew, Lam Weng; Jaaman, Saiful Hafizah; Ismail, Hamizun

    2016-06-01

    Index tracking is an investment strategy in portfolio management which aims to construct an optimal portfolio to generate similar mean return with the stock market index mean return without purchasing all of the stocks that make up the index. The objective of this paper is to construct an optimal portfolio using the optimization model which adopts regression approach in tracking the benchmark stock market index return. In this study, the data consists of weekly price of stocks in Malaysia market index which is FTSE Bursa Malaysia Kuala Lumpur Composite Index from January 2010 until December 2013. The results of this study show that the optimal portfolio is able to track FBMKLCI Index at minimum tracking error of 1.0027% with 0.0290% excess mean return over the mean return of FBMKLCI Index. The significance of this study is to construct the optimal portfolio using optimization model which adopts regression approach in tracking the stock market index without purchasing all index components.

  9. Learning Styles and e-portfolio in Nursing Education

    DEFF Research Database (Denmark)

    Nielsen, Kirsten; Pedersen, Birthe D.; Helms, Niels Henrik

    Purpose of the study Research from UK and USA indicates that an e-portfolio facilitates a stronger connection between theoretical and clinical studies in Nursing Education. It helps students reflect over practice and their own skills. Yet other results show that an e-portfolio is a time consumer....... Thus, the aim of this project is to examine the effects of an e-portfolio on nursing students learning of patients with chronic illness during their clinical practice, and to investigate if it makes any difference in facilitating four learning styles: the activist, the reflector, the theorist...... through observations in clinical settings, narrative interviews, and print-outs from the students e-portfolio. Findings So far a pilot project with a questionnaire shows that 84% of the students and nurses reported that the e-portfolio has a positive effect on students learning in clinical settings...

  10. Learning to Select Supplier Portfolios for Service Supply Chain

    Science.gov (United States)

    Zhang, Rui; Li, Jingfei; Wu, Shaoyu; Meng, Dabin

    2016-01-01

    The research on service supply chain has attracted more and more focus from both academia and industrial community. In a service supply chain, the selection of supplier portfolio is an important and difficult problem due to the fact that a supplier portfolio may include multiple suppliers from a variety of fields. To address this problem, we propose a novel supplier portfolio selection method based on a well known machine learning approach, i.e., Ranking Neural Network (RankNet). In the proposed method, we regard the problem of supplier portfolio selection as a ranking problem, which integrates a large scale of decision making features into a ranking neural network. Extensive simulation experiments are conducted, which demonstrate the feasibility and effectiveness of the proposed method. The proposed supplier portfolio selection model can be applied in a real corporation easily in the future. PMID:27195756

  11. Investment risk management by applying contemporary modern portfolio theory

    Directory of Open Access Journals (Sweden)

    Jakšić Milena

    2015-01-01

    Full Text Available Investment risk is the principal threat to the assets side of the balance sheets of financial institutions. It is evident that investors who concentrate their wealth on one type of securities can rarely be found. Instead, they tend to invest diversified portfolio of securities. This reduces the degree of risk of the expected return, which depends both on the absolute risk of each investment in the portfolio, and the relationship that exists between individual investments within the portfolio. The paper analyzes the investment risk management by using modern portfolio theory in both national and global financial f lows. At the same time, the paper considers the risk management models that ensures efficient portfolio diversification, aiming at investment risk reduction. It is pointed out that the investment risk management in modern financial f lows is a complex process, and that the development of financial theory goes towards improving, soft risk management method.

  12. Twelve tips for successful e-tutoring using electronic portfolios.

    Science.gov (United States)

    Deketelaere, Ann; Degryse, Jan; De Munter, Agnes; De Leyn, Paul

    2009-06-01

    E-tutoring by means of a digital portfolio offers personal guidance in a context in which regular face-to-face contact between supervisor and student is difficult. However, implementing e-tutoring in practice is not always straightforward. This article investigates the conditions for successful e-tutoring of electronic portfolios. A combination of three methods is used: our own experience with e-tutoring, interviews with 14 tutors using an e-portfolio and the answers on questionnaires by 107 students. We present 12 tips to increase the chances of successful e-tutoring when using electronic portfolios. E-tutoring by means of electronic portfolios can be a feasible alternative in contexts in which face-to-face tutoring is difficult.

  13. Portfolios for assessment and learning: AMEE Guide no. 45.

    Science.gov (United States)

    Van Tartwijk, Jan; Driessen, Erik W

    2009-09-01

    In 1990, Miller wrote that no tools were available for assessment of what a learner does when functioning independently at the clinical workplace (Miller 1990 ). Since then portfolios have filled this gap and found their way into medical education, not only as tools for assessment of performance in the workplace, but also as tools to stimulate learning from experience. We give an overview of the content and structure of various types of portfolios, describe the potential of electronic portfolios, present techniques and strategies for using portfolios as tools for stimulating learning and for assessment, and discuss factors that influence the success of the introduction. We conclude that portfolios have a lot of potential but that their introduction also often leads to disappointment, because they require a new perspective on education from mentors and learners and a significant investment of time and energy.

  14. Vast Portfolio Selection with Gross-exposure Constraints*

    Science.gov (United States)

    Fan, Jianqing; Zhang, Jingjin; Yu, Ke

    2012-01-01

    We introduce the large portfolio selection using gross-exposure constraints. We show that with gross-exposure constraint the empirically selected optimal portfolios based on estimated covariance matrices have similar performance to the theoretical optimal ones and there is no error accumulation effect from estimation of vast covariance matrices. This gives theoretical justification to the empirical results in Jagannathan and Ma (2003). We also show that the no-short-sale portfolio can be improved by allowing some short positions. The applications to portfolio selection, tracking, and improvements are also addressed. The utility of our new approach is illustrated by simulation and empirical studies on the 100 Fama-French industrial portfolios and the 600 stocks randomly selected from Russell 3000. PMID:23293404

  15. Das Portfolio als Beitrag zur Reflexion persönlicher Kompetenzentwicklung in der Religions-/PädagogInnenbildung. Chancen einer neuen Lern- und Bewertungskultur - am Beispiel einer Fallstudie

    Directory of Open Access Journals (Sweden)

    Alexander van Dellen

    2013-10-01

    Full Text Available ”Competence orientation” in pedagogy education constitutes a central point within the draft laws formulated on the 12th of June 2013. These see the use of portfolios as playing a crucial part of religious instruction education. This is based on the expectation that portfolios act as continuous and helpful companions throughout the various educational phases and therefore benefit students’ reflections on individual competence development. Portfolios allow effective measures towards personal development as a professional educator to be taken. The format at hand, which was conceived as a case study at the Institute for Practical Theology (department catechetics, religious education studies and religious didactics at the Faculty of Catholic Theology at the University of Innsbruck, is intended to be used as a basis for a discussion on the benefits of a continuous portfolio as a reflection tool for students’ personal competence development. The first step illustrates the genesis and structure of the portfolio concept (2, so that the second step can then outline the potentials held by this new culture of using portfolios as learning and assessment tools in religious instruction education (3. In den vom österreichischen Parlament am 12. Juni 2013 beschlossenen Gesetzesentwürfen zur zukünftigen PädagogInnenbildung stellt die Kompetenzorientierung einen Kernpunkt dar. In diesem Zusammenhang wird in der Ausbildung von Religions-/PädagogInnen der Einsatz von Portfolios verstärkt eine zentrale Rolle spielen. Damit ist die Hoffnung verbunden, dass das Portfolio als Kontinuum in den unterschiedlichen Phasen der Religions-/PädagogInnenbildung für Studierende ein hilfreiches Instrument für die Reflexion ihrer individuellen Kompetenzentwicklung bildet. Somit kann eine wirksame Maßnahme der persönlichen Entwicklung in der Professionalisierung für den Lehrberuf gesetzt werden. In den vorliegenden Ausführungen soll auf der Grundlage einer

  16. Blackboard Portfolio in uw Onderwijspraktijk : E-portfolio als instrument voor ontwikkeling, beoordeling en presentatie van (academische) vaardigheden

    NARCIS (Netherlands)

    Huizer, C.G.; Ouwehand, G.M.; Van der Zanden, A.H.W.

    2009-01-01

    Op eenvoudige wijze wordt de theorie en praktijk behandeld van het E-Portfolio in algemene zin. Praktijkervaringen van diverse docenten worden uitgewerkt en beschreven. Het laat zien dat het E-Portfolio een effectief instrument is, waarmee de begeleiding, beoordeling en presentatie van de

  17. Network versus portfolio structure in financial systems

    Science.gov (United States)

    Kobayashi, Teruyoshi

    2013-10-01

    The question of how to stabilize financial systems has attracted considerable attention since the global financial crisis of 2007-2009. Recently, Beale et al. [Proc. Natl. Acad. Sci. USA 108, 12647 (2011)] demonstrated that higher portfolio diversity among banks would reduce systemic risk by decreasing the risk of simultaneous defaults at the expense of a higher likelihood of individual defaults. In practice, however, a bank default has an externality in that it undermines other banks’ balance sheets. This paper explores how each of these different sources of risk, simultaneity risk and externality, contributes to systemic risk. The results show that the allocation of external assets that minimizes systemic risk varies with the topology of the financial network as long as asset returns have negative correlations. In the model, a well-known centrality measure, PageRank, reflects an appropriately defined “infectiveness” of a bank. An important result is that the most infective bank needs not always to be the safest bank. Under certain circumstances, the most infective node should act as a firewall to prevent large-scale collective defaults. The introduction of a counteractive portfolio structure will significantly reduce systemic risk.

  18. Developing portfolios of water supply transfers

    Science.gov (United States)

    Characklis, Gregory W.; Kirsch, Brian R.; Ramsey, Jocelyn; Dillard, Karen E. M.; Kelley, C. T.

    2006-05-01

    Most cities rely on firm water supply capacity to meet demand, but increasing scarcity and supply costs are encouraging greater use of temporary transfers (e.g., spot leases, options). This raises questions regarding how best to coordinate the use of these transfers in meeting cost and reliability objectives. This paper combines a hydrologic-water market simulation with an optimization approach to identify portfolios of permanent rights, options, and leases that minimize the expected costs of meeting a city's annual demand with a specified reliability. Spot market prices are linked to hydrologic conditions and described by monthly lease price distributions which are used to price options via a risk-neutral approach. Monthly choices regarding when and how much water to acquire through temporary transfers are made on the basis of anticipatory decision rules related to the ratio of expected supply to expected demand. The simulation is linked with an algorithm that uses an implicit filtering search method designed for solution surfaces that exhibit high-frequency, low-amplitude noise. This simulation-optimization approach is applied to a region that currently supports an active water market, with results suggesting that temporary transfers can reduce expected water supply costs substantially, while still maintaining high reliability. Also evaluated are trade-offs between expected costs and cost variability that occur with variation in a portfolio's distribution of rights, options, and leases.

  19. [Training evaluation using the four courses portfolio in primary care residents of a Teaching Unit in Murcia].

    Science.gov (United States)

    Saura Llamas, José; Martínez Garre, María Nieves; Sebastián Delgado, María Elena; Martínez Navarro, María Ángeles; Leal Hernández, Mariano; Blanco Sabio, Susana; Martínez Pastor, Antonio

    2013-01-01

    To evaluate the performance and quality of the 10 groups of training tasks envisaged in the portfolio training model undertaken by all residents of the Primary Care Teaching Unit in Murcia. A cross-sectional study was conducted on the portfolios provided and completed by all residents in May 2011. All residents who were in training at that time (131). Ten groups of training tasks were established from those recommended by the National Commission for the specialty. The performance of each one in each of the portfolios was evaluated, and the compliance for each training task was calculated. The quality of the performance of each of the tasks was given a score, 0 points (very poor) to 10 points (excellent). As regards compliance, the tasks that were most performed were: filling in the Resident book correctly and using the resident skills guide, both with 99.24%, followed by reflection reports on the training visits. All tasks had a compliance rate higher than 67%. The mean percentage of compliance was 86.49%. All tasks obtained an average score greater than 7 (outstanding). The overall mean score was 7,8 points. The level of perfomance of the tasks set out in the portfolio by the residents was very satisfying. It is necessary to continue working on improving the performance of the portfolio. Copyright © 2012 Elsevier España, S.L. All rights reserved.

  20. Wrist range of motion and motion frequency during toy and game play with a joint-specific controller specially designed to provide neuromuscular therapy: A proof of concept study in typically developing children.

    Science.gov (United States)

    Crisco, Joseph J; Schwartz, Joel B; Wilcox, Bethany; Brideau, Holly; Basseches, Benjamin; Kerman, Karen

    2015-08-20

    Upper extremities affected by hemiplegic cerebral palsy (CP) and other neuromuscular disorders have been demonstrated to benefit from therapy, and the greater the duration of the therapy, the greater the benefit. A great motivator for participating in and extending the duration of therapy with children is play. Our focus is on active motion therapy of the wrist and forearm. In this study we examine the wrist motions associated with playing with two toys and three computer games controlled by a specially-designed play controller. Twenty children (ages 5-11) with no diagnosis of a muscular disorder were recruited. The play controller was fitted to the wrist and forearm of each child and used to measure and log wrist flexion and extension. Play activity and enjoyment were quantified by average wrist range of motion (ROM), motion frequency measures, and a discrete visual scale. We found significant differences in the average wrist ROM and motion frequency among the toys and games, yet there were no differences in the level of enjoyment across all toys and games, which was high. These findings indicate which toys and games may elicit the greater number of goal-directed movements, and lay the foundation for our long-term goal to develop and evaluate innovative motion-specific play controllers that are engaging rehabilitative devices for enhancing therapy and promoting neural plasticity and functional recovery in children with CP. Copyright © 2015 Elsevier Ltd. All rights reserved.

  1. Dietary supplement research portfolio at the NIH, 2009-2011.

    Science.gov (United States)

    Garcia-Cazarin, Mary L; Wambogo, Edwina A; Regan, Karen S; Davis, Cindy D

    2014-04-01

    The U.S. dietary supplement market increased by 7.5% in 2012 compared with 2011, reaching $32.5 billion in sales. Therefore, federally supported research on dietary supplements is important to determine their health effects, safety, and efficacy. A portfolio analysis was performed across the NIH and the Office of Dietary Supplements (ODS) for fiscal years (FYs) 2009-2011 by using the databases Human Nutrition Research Information Management (HNRIM) and Computer Access to Research on Dietary Supplements (CARDS). The results indicated that total NIH dietary supplement-related funding for FYs 2009-2011 was $855 million ($295 million in 2009, $311 million in 2010, and $249 million in 2011). The institutes and centers with the highest investment in dietary supplement research were as follows: the National Heart, Lung, and Blood Institute ($135 million); the National Cancer Institute ($188 million); the National Center for Complementary and Alternative Medicine ($99 million); the National Institute of Diabetes and Digestive and Kidney Diseases ($68 million); the National Institute of Environmental Health Sciences ($58 million); and the ODS ($32 million). The dietary supplement ingredients receiving the most funding were botanicals (22%), vitamins (20%), lipids (14%), and minerals and trace elements (10%). The top 3 outcome research areas were cancer (61% of total dietary supplement investment), cardiovascular disease (47%), and women's reproductive health (38%). In FYs 2009, 2010, and 2011, the ODS provided 3.5%, 3.6%, and 4.1%, respectively, of the NIH investment in dietary supplement research. ODS funding focused on cellular, enzymatic, or molecular mechanisms (64% of total ODS funding). This portfolio analysis demonstrates that the NIH has committed substantial funding to dietary supplement research in an effort to expand the scientific knowledge base on the efficacy and safety of dietary supplements.

  2. Assessing alternative industrial fortification portfolios: a Bangladesh case study.

    Science.gov (United States)

    Fiedler, John L; Lividini, Keith; Guyondet, Christophe; Bermudez, Odilia I

    2015-03-01

    Approximately 1.2 million disability-adjusted life years (DALYs) are lost annually in Bangladesh due to deficiencies of vitamin A, iron, and zinc. To provide evidence on the coverage, costs, and cost-effectiveness of alternative fortification interventions to inform nutrition policy-making in Bangladesh. Combining the 2005 Bangladesh Household Income and Expenditure Survey with a Bangladesh food composition table, apparent intakes of energy, vitamin A, iron, and zinc, and the coverage and apparent consumption levels of fortifiable vegetable oil and wheat flour are estimated. Assuming that fortification levels are those established in official regulations, the costs and cost-effectiveness of the two vehicles are assessed independently and as a two-vehicle portfolio. Vegetable oil has a coverage rate of 76% and is estimated to reduce the prevalence of inadequate vitamin A intake from 83% to 64%. The coverage of wheat flour is high (65%), but the small quantities consumed result in small reductions in the prevalence of inadequate intakes: 1.5 percentage points for iron, less than 1 for zinc, and 2 for vitamin A, while reducing average Estimated Average Requirement (EAR) gaps by 8%, 9%, and 15%, respectively. The most cost-effective 10-micronutrient wheat flour formulation costs US $1.91 million annually, saving 129,212 DALYs at a unit cost of US $14.75. Fortifying vegetable oil would cost US $1.27 million annually, saving 406,877 DALYs at an average cost of US $3.25. Sensitivity analyses explore various permutations of the wheat flour formulation. Divisional variations in coverage, cost, and impact are examined. Vegetable oil fortification is the most cost-effective of the three portfolios analyzed, but all three are very cost-effective options for Bangladesh.

  3. Major Oil Plays in Utah and Vicinity

    Energy Technology Data Exchange (ETDEWEB)

    Thomas C. Chidsey; Craig D. Morgan; Kevin McClure; Douglas A. Sprinkel; Roger L. Bon; Hellmut H. Doelling

    2003-12-31

    Utah oil fields have produced over 1.2 billion barrels (191 million m{sup 3}). However, the 13.7 million barrels (2.2 million m{sup 3}) of production in 2002 was the lowest level in over 40 years and continued the steady decline that began in the mid-1980s. The Utah Geological Survey believes this trend can be reversed by providing play portfolios for the major oil-producing provinces (Paradox Basin, Uinta Basin, and thrust belt) in Utah and adjacent areas in Colorado and Wyoming. Oil plays are geographic areas with petroleum potential caused by favorable combinations of source rock, migration paths, reservoir rock characteristics, and other factors. The play portfolios will include: descriptions and maps of the major oil plays by reservoir; production and reservoir data; case-study field evaluations; locations of major oil pipelines; identification and discussion of land-use constraints; descriptions of reservoir outcrop analogs; and summaries of the state-of-the-art drilling, completion, and secondary/tertiary techniques for each play. This report covers research activities for the sixth quarter of the project (October 1 through December 31, 2003). This work included describing outcrop analogs for the Jurassic Twin Creek Limestone and Mississippian Leadville Limestone, major oil producers in the thrust belt and Paradox Basin, respectively, and analyzing best practices used in the southern Green River Formation play of the Uinta Basin. Production-scale outcrop analogs provide an excellent view of reservoir petrophysics, facies characteristics, and boundaries contributing to the overall heterogeneity of reservoir rocks. They can be used as a ''template'' for evaluation of data from conventional core, geophysical and petrophysical logs, and seismic surveys. In the Utah/Wyoming thrust belt province, the Jurassic Twin Creek Limestone produces from subsidiary closures along major ramp anticlines where the low-porosity limestone beds are extensively

  4. Should cryptocurrencies be included in the portfolio of international reserves held by central banks?

    Directory of Open Access Journals (Sweden)

    Winston Moore

    2016-12-01

    Full Text Available In most countries, the central bank is required to hold reserve assets as a means of providing credibility for the value of the fiat currency. These assets can be in the form of gold, foreign exchange or some other internationally recognised reserve asset and are held to permit the country to engage in international transactions. Within recent years, cryptocurrencies have been increasingly utilised for international transactions, and it is possible that the use of these cryptocurrencies might expand in the future. This paper therefore examines the potential role of digital currency balances as part of the portfolio of external assets held by a central bank. Using the case of Barbados, the paper also provides a simulation of the effect holding some proportion of their asset-base would have had on the stability of the foreign reserves as well as the return on the portfolio of assets.

  5. The use of an evidence-based portfolio in the management of change in dental practice.

    Science.gov (United States)

    Hall, John

    2006-10-01

    In this paper the author gives his opinion about the problems of getting practices to change systems in order to institute clinical governance. There are many reasons why practices need to change and for this change to be monitored. This paper explains the need for change and the use of the evidence-based portfolio, which is produced by candidates for the Membership of the Faculty of General Dental Practice (UK) [MFGDP(UK)] examination. It can also be produced by individuals who are not taking the MFGDP(UK) examination in conjunction with the Faculty of General Dental Practice (UK)'s key skills programme. It provides a mechanism for demonstrating change and for assessing the quality of care provided by a general dental practice. The author concludes that the evidence-based portfolio will enable a practitioner to apply clinical governance in a practical way.

  6. Major Oil Plays In Utah And Vicinity

    Energy Technology Data Exchange (ETDEWEB)

    Thomas Chidsey

    2007-12-31

    Utah oil fields have produced over 1.33 billion barrels (211 million m{sup 3}) of oil and hold 256 million barrels (40.7 million m{sup 3}) of proved reserves. The 13.7 million barrels (2.2 million m3) of production in 2002 was the lowest level in over 40 years and continued the steady decline that began in the mid-1980s. However, in late 2005 oil production increased, due, in part, to the discovery of Covenant field in the central Utah Navajo Sandstone thrust belt ('Hingeline') play, and to increased development drilling in the central Uinta Basin, reversing the decline that began in the mid-1980s. The Utah Geological Survey believes providing play portfolios for the major oil-producing provinces (Paradox Basin, Uinta Basin, and thrust belt) in Utah and adjacent areas in Colorado and Wyoming can continue this new upward production trend. Oil plays are geographic areas with petroleum potential caused by favorable combinations of source rock, migration paths, reservoir rock characteristics, and other factors. The play portfolios include descriptions and maps of the major oil plays by reservoir; production and reservoir data; case-study field evaluations; locations of major oil pipelines; identification and discussion of land-use constraints; descriptions of reservoir outcrop analogs; and summaries of the state-of-the-art drilling, completion, and secondary/tertiary recovery techniques for each play. The most prolific oil reservoir in the Utah/Wyoming thrust belt province is the eolian, Jurassic Nugget Sandstone, having produced over 288 million barrels (46 million m{sup 3}) of oil and 5.1 trillion cubic feet (145 billion m{sup 3}) of gas. Traps form on discrete subsidiary closures along major ramp anticlines where the depositionally heterogeneous Nugget is also extensively fractured. Hydrocarbons in Nugget reservoirs were generated from subthrust Cretaceous source rocks. The seals for the producing horizons are overlying argillaceous and gypsiferous beds in

  7. Status of portfolios in undergraduate medical education in the LCME accredited US medical school.

    Science.gov (United States)

    Chertoff, Jason; Wright, Ashleigh; Novak, Maureen; Fantone, Joseph; Fleming, Amy; Ahmed, Toufeeq; Green, Marianne M; Kalet, Adina; Linsenmeyer, Machelle; Jacobs, Joshua; Dokter, Christina; Zaidi, Zareen

    2016-09-01

    We sought to investigate the number of US medical schools utilizing portfolios, the format of portfolios, information technology (IT) innovations, purpose of portfolios and their ability to engage faculty and students. A 21-question survey regarding portfolios was sent to the 141 LCME-accredited, US medical schools. The response rate was 50% (71/141); 47% of respondents (33/71) reported that their medical school used portfolios in some form. Of those, 7% reported the use of paper-based portfolios and 76% use electronic portfolios. Forty-five percent reported portfolio use for formative evaluation only; 48% for both formative and summative evaluation, and 3% for summative evaluation alone. Seventy-two percent developed a longitudinal, competency-based portfolio. The most common feature of portfolios was reflective writing (79%). Seventy-three percent allow access to the portfolio off-campus, 58% allow usage of tablets and mobile devices, and 9% involve social media within the portfolio. Eighty percent and 69% agreed that the portfolio engaged students and faculty, respectively. Ninety-seven percent reported that the portfolios used at their institution have room for improvement. While there is significant variation in the purpose and structure of portfolios in the medical schools surveyed, most schools using portfolios reported a high level of engagement with students and faculty.

  8. Grammar and Student Portfolios; Self-Evaluation and Pride in Learning.

    Science.gov (United States)

    Reed, Candi Mascia

    1997-01-01

    Discusses using portfolios to evaluate the writing, vocabulary, and grammar of students with deafness. Describes the steps for student development and assembly of their portfolios for presentation and review. Also highlights student participation in the assessment of the portfolios and the benefits of portfolios. (CR)

  9. The Bottomless File Box: Electronic Portfolios for Learning and Evaluation Purposes

    Science.gov (United States)

    Jarrott, Shannon; Gambrel, Laura Eubanks

    2011-01-01

    Portfolios have been used for the past three decades in higher education for assessment of student competency and also as a reflection tool to assist student learning. Electronic portfolios, or ePortfolios, have additional benefits compared to paper portfolios in that they are easily accessible, portable, and sharable, and they are more…

  10. Mean-Coherent Risk and Mean-Variance Approaches in Portfolio Selection : An Empirical Comparison

    NARCIS (Netherlands)

    Polbennikov, S.Y.; Melenberg, B.

    2005-01-01

    We empirically analyze the implementation of coherent risk measures in portfolio selection.First, we compare optimal portfolios obtained through mean-coherent risk optimization with corresponding mean-variance portfolios.We find that, even for a typical portfolio of equities, the outcomes can be

  11. Using Facebook-Based e-Portfolio in ESL Writing Classrooms: Impact and Challenges

    Science.gov (United States)

    Barrot, Jessie S.

    2016-01-01

    In English as a second language (ESL) writing pedagogy, much attention has been given to electronic portfolio (e-portfolio) assessment via social networking sites. However, little is known about how Facebook can be used as an e-portfolio platform. Hence, this paper describes the impact of Facebook-based e-portfolio on ESL students' writing…

  12. Engagement with Electronic Portfolios: Challenges from the Student Perspective

    Directory of Open Access Journals (Sweden)

    David Tosh

    2005-10-01

    Full Text Available Much of the evidence and research available on the use of e-portfolios focuses on faculty and institutional perspectives and/or consists mainly of anecdotes about how useful the e-portfolio has been to learners. While it is generally agreed that e-portfolios have great potential to engage students and promote deep learning, the research that has been conducted to date focuses very little on student perceptions of value of the e-portfolio for their learning. If students do not accept the e-portfolio as a holistic means with which to document their learning in different contexts and more importantly, agree or wish to use the e-portfolio as an integral part of their educational experience, then the potential impact the e-portfolio will have on learning will not be realised. This paper highlights four themes arising out of research that is underway within an international framework of collaboration between the University of Edinburgh, the University of British Columbia and the University of Waterloo.

  13. The unintended consequences of portfolios in graduate medical education.

    Science.gov (United States)

    Nagler, Alisa; Andolsek, Kathryn; Padmore, Jamie S

    2009-11-01

    Portfolios have emerged in graduate medical education despite lack of consensus on their definition, purpose, or usefulness. Portfolios can be used as a tool for residents to record their accomplishments, reflect on their experiences, and gain formative feedback. This exercise may help prepare physicians for lifelong learning as well as enhance patient care. The Accreditation Council for Graduate Medical Education has endorsed and may soon require the use of portfolios as an assessment tool to evaluate resident competence. However, using portfolios for summative evaluation purposes such as making high-stakes decisions on resident promotion or matriculation may deter resident candidness. In addition, the use of portfolios in clinical settings raises issues unique to the health care setting such as patient privacy, disclosure of clinical information, and professional liability exposure of physicians. It is not clear that peer-review statutes that sometimes protect educational materials used in teaching and evaluation of residents would also bar disclosure and/or evidentiary use of portfolio contents. Is the teaching institution, resident, or graduate vulnerable to requests and subpoenas for the portfolio contents? If so, then a resident's documentation of insecurities, suboptimal performance, or bad outcomes would be ripe for discovery in a medical malpractice lawsuit. If embraced too quickly and without sufficient reflection on the nuances of implementation, this well-intentioned initiative may present unintended legal consequences.

  14. Active extension portfolio optimization with non-convex risk measures using metaheuristics

    OpenAIRE

    Hochreiter, Ronald; Waldhauser, Christoph

    2014-01-01

    We consider the optimization of active extension portfolios. For this purpose, the optimization problem is rewritten as a stochastic programming model and solved using a clever multi-start local search heuristic, which turns out to provide stable solutions. The heuristic solutions are compared to optimization results of convex optimization solvers where applicable. Furthermore, the approach is applied to solve problems with non-convex risk measures, most notably to minimize Value-at-Risk. Num...

  15. Operational energy capability portfolio analysis for protection of maritime forces against small boat swarms

    OpenAIRE

    Cheang, Whye Kin Melvin

    2016-01-01

    Approved for public release; distribution is unlimited This research examines the requirements of a capability portfolio for protecting a maritime force against a conventional small boat swarm attack. It provides decision makers with insights gleaned from exploring the trade space between weapon consumption, fuel consumption, and cost against the need to protect the force. Such an attack can deplete a force's resources and create risk to overall mission accomplishment. In this research, th...

  16. Portfolio management: Simulations make risks transparent; Portfoliomanagement. Simulationen machen Risiken transparent

    Energy Technology Data Exchange (ETDEWEB)

    Verhoeven, Meike [Soptim AG, Aachen (Germany)

    2011-12-15

    Dynamic developments in the energy markets and volatile prices are making it increasingly difficult to manage energy portfolios, power plants and gas stores. At the same time, it is important to identify rice risks more reliably and in more detail than before and to be able to control them. Traditional methods of risk management have their limits here. New analytical tools based on financial mathematics provide sufficient support in solving everyday management tasks.

  17. An application of almost marginal conditional stochastic dominance (AMCSD) on forming efficient portfolios

    Science.gov (United States)

    Slamet, Isnandar; Mardiana Putri Carissa, Siska; Pratiwi, Hasih

    2017-10-01

    Investors always seek an efficient portfolio which is a portfolio that has a maximum return on specific risk or minimal risk on specific return. Almost marginal conditional stochastic dominance (AMCSD) criteria can be used to form the efficient portfolio. The aim of this research is to apply the AMCSD criteria to form an efficient portfolio of bank shares listed in the LQ-45. This criteria is used when there are areas that do not meet the criteria of marginal conditional stochastic dominance (MCSD). On the other words, this criteria can be derived from quotient of areas that violate the MCSD criteria with the area that violate and not violate the MCSD criteria. Based on the data bank stocks listed on LQ-45, it can be stated that there are 38 efficient portfolios of 420 portfolios where each portfolio comprises of 4 stocks and 315 efficient portfolios of 1710 portfolios with each of portfolio has 3 stocks.

  18. "Playing" with our users

    DEFF Research Database (Denmark)

    Brooks, Anthony Lewis

    2014-01-01

    , about what happens to our users when research is over, funds are gone and the curtain of experiments has fallen. Dr Brooks presented the case of a young user who while unable to move and communicate had to part with the test device that provided him with interactive playful experience. We’ve all been...

  19. Learning Arabic through play

    DEFF Research Database (Denmark)

    Papadopoulos, Pantelis M.; Ibrahim, Zeinab; Karatsolis, Andreas

    2015-01-01

    weeks in the project. The paper presents three of the most played games by the students, along with analysis on collected data, focusing on students’ performance and attitudes towards the new curriculum. Results analysis provided an encouraging image, suggesting that the conducted activity was able...... to increase students’ engagement in language learning, increase their exposure to MSA, and develop their vocabulary....

  20. Managing Uncertainty and Conflict in IT Project Portfolio Management

    DEFF Research Database (Denmark)

    Pedersen, Keld; Agger Nielsen, Jeppe

    2011-01-01

    Maximizing the outcome of IT project investments has been a major concern for years. Several approaches have been suggested one of them being Project Portfolio Management (PPM). Even though PPM offers valuable techniques for aligning IT project portfolios with organizational needs and maximizing...... the outcome of project portfolios, practitioners find it difficult to implement. Our research suggests one of the reasons being the fact that PPM builds upon classic rational ideals about decision-making in organizations that are hard to realize and in some aspects counterproductive for non-routine decision...