Achieving a Prioritized Research and Technology Development Portfolio for the Dust Management Project

NASA Technical Reports Server (NTRS)

Hyatt, Mark J.; Abel, Phillip; Delaune, Paul; Fishman, Julianna; Kohli, Rajiv

2009-01-01

Mission architectures for human exploration of the lunar surface continue to advance as well as the definitions of capability needs, best practices and engineering design to mitigate the impact of lunar dust on exposed systems. The NASA DMP has been established as the agency focal point for dust characterization, technology, and simulant development. As described in this paper, the DMP has defined a process for selecting and justifying its R&T portfolio. The technology prioritization process, which is based on a ranking system according to weighted criteria, has been successfully applied to the current DMP dust mitigation technology portfolio. Several key findings emerged from this assessment. Within the dust removal and cleaning technologies group, there are critical technical challenges that must be overcome for these technologies to be implemented for lunar applications. For example, an in-situ source of CO2 on the moon is essential to the CO2 shower technology. Also, significant development effort is required to achieve technology readiness level TRL 6 for the electrostatic cleaning system for removal of particles smaller than 50 pm. The baseline materials related technologies require considerable development just to achieve TRL 6. It is also a nontrivial effort to integrate the materials in hardware for lunar application. At present, there are no terrestrial applications that are readily adaptable to lunar surface applications nor are there any obvious leading candidates. The unique requirements of dust sealing systems for lunar applications suggest an extensive development effort will be necessary to mature dust sealing systems to TRL 6 and beyond. As discussed here, several alternate materials and technologies have achieved high levels of maturity for terrestrial applications and warrant due diligence in ongoing assessment of the technology portfolio. The present assessment is the initial step in an ongoing effort to continually evaluate the DMP technology

Electronic Portfolios. [SITE 2001 Section].

ERIC Educational Resources Information Center

Willis, Dee Anna, Ed.

This document contains the following papers on electronic portfolios from the SITE (Society for Information Technology & Teacher Education) 2001 conference: (1) "Portfolios: The Plan, the Purpose, a Preview" (Val Christensen and others); (2) "Electronic Portfolios (EP): A How To Guide" (Jerry P. Galloway); (3)…

ePortfolio Pedagogy, Technology, and Scholarship: Now and in the Future

ERIC Educational Resources Information Center

Watson, C. Edward; Doolittle, Peter E.

2011-01-01

A number of indicators, including new professional organizations, the proliferation of software tools, and the launch of a new international journal, are signaling a critical mass of interest in ePortfolios in educational settings. This article describes the current ePortfolio landscape by examining the key promises offered by such tools in…

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

ERIC Educational Resources Information Center

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,…

Information Technology Portfolio Management Proof of Concept: Modern Portfolio Theory With KVA and ROI Analysis

DTIC Science & Technology

2010-09-01

approach” that provides analysis for “program managers to attain the right knowledge [e.g., portfolio values] at critical junctures so they can make...portfolio, it is critical to create a credible beta (β) for the presumed “market volatility” of the IT asset class. The KVA methodology may be used...for this critical task. Establishing a beta (β) for DoD wide IT portfolio management uses the work conducted at the Naval Postgraduate School (NPS

A Quantitative Study into the Information Technology Project Portfolio Practice: The Impact on Information Technology Project Deliverables

ERIC Educational Resources Information Center

Yu, Wei

2013-01-01

This dissertation applied the quantitative approach to the data gathered from online survey questionnaires regarding the three objects: Information Technology (IT) Portfolio Management, IT-Business Alignment, and IT Project Deliverables. By studying this data, this dissertation uncovered the underlying relationships that exist between the…

Including Alternative Resources in State Renewable Portfolio Standards: Current Design and Implementation Experience

DOE Office of Scientific and Technical Information (OSTI.GOV)

Heeter, J.; Bird, L.

2012-11-01

Currently, 29 states, the District of Columbia, and Puerto Rico have instituted a renewable portfolio standard (RPS). An RPS sets a minimum threshold for how much renewable energy must be generated in a given year. Each state policy is unique, varying in percentage targets, timetables, and eligible resources. This paper examines state experience with implementing renewable portfolio standards that include energy efficiency, thermal resources, and non-renewable energy and explores compliance experience, costs, and how states evaluate, measure, and verify energy efficiency and convert thermal energy. It aims to gain insights from the experience of states for possible federal clean energymore » policy as well as to share experience and lessons for state RPS implementation.« less

The Incorporation of ePortfolios into EFL Courses--Barriers Encountered in the Diffusion of Technology

ERIC Educational Resources Information Center

Siu, Fiona K. P.

2013-01-01

Electronic Portfolios (hereafter ePortfolios) were incorporated into courses run by the English Language Centre at the City University of Hong Kong from Jan 2009 to Aug 2010. Experience with this innovation constitutes the substance of this report. Major challenges included: 1) Making the ePortfolio platform user-friendly by providing technical…

The Incorporation of ePortfolios into EFL Courses: Barriers Encountered in the Diffusion of Technology

ERIC Educational Resources Information Center

Siu, Fiona Kwai Peng

2013-01-01

Electronic Portfolios (hereafter ePortfolios) were incorporated into courses run by the English Language Centre (ELC) at the City University of Hong Kong from Jan 2009 to Aug 2010. Experience with this innovation constitutes the substance of this report. Major challenges included: 1) Making the ePortfolio platform user-friendly by providing…

Handbook of Research on ePortfolios

ERIC Educational Resources Information Center

Jafari, Ali, Ed.; Kaufman, Catherine, Ed.

2006-01-01

The "Handbook of Research on ePortfolios" is the single source for comprehensive coverage of the major themes of ePortfolios, addressing all of the major issues, from concept to technology to implementation. It is the first reference publication to provide a complete investigation on a variety of ePortfolio uses through case studies and…

Electronic Portfolios. [SITE 2002 Section].

ERIC Educational Resources Information Center

Barrett, Helen C., Ed.

This document contains the following papers on electronic portfolios from the SITE (Society for Information Technology & Teacher Education) 2002 conference: (1) "What Is the Perceived Value of Creating Electronic Portfolios to Teacher Credential Candidates?" (Valerie Amber and Brenda Czech); (2) "Development and Use of…

Transformative Learning through "Teaching with Technology" Electronic Portfolios

ERIC Educational Resources Information Center

Stansberry, Susan L.; Kymes, Angel D.

2007-01-01

Along with discussion of format and design of electronic portfolios, this article addresses the larger question of what happens to teachers when they invest in creating a professional portfolio. Are they able to transform this experience into more authentic assessment with their own students? Beside acquiring proficiency in using portfolio…

A methodology for the valuation and selection of adaptable technology portfolios and its application to small and medium airports

NASA Astrophysics Data System (ADS)

Pinon, Olivia J.

-step process developed in this research leverages the benefits yielded by impact assessment techniques, system dynamics modeling, and real options analysis to 1) provide the decision maker with a rigorous, structured, and traceable process for technology selection, 2) assess the combined impact of interrelated technologies, 3) support the translation of technology impact factors into airport performance indicators, and help identify the factors that drive the need for capacity expansion, and finally 4) enable the quantitative assessment of the strategic value of embedding flexibility in the formulation of technology portfolios and investment options. In particular, the development of this methodology highlights the successful implementation of relevance tree analysis, morphological analysis, filters and dependency tables to support the aforementioned process for technology selection. Further, it illustrates the limited capability of Cross Impact Analysis to identify technology relationships for the problem at hand. Finally, this methodology demonstrates, through a change in demand at the airport modeled, the importance of being able to weigh both the technological and strategic performance of the technology portfolios considered. In particular, it illustrates the impact that the level of traffic, the presence of congestion, the timing and sequence of investments, and the number of technologies included, have on the strategic value of a portfolio. Hence, by capturing the time dimension and technology causality impacts in technology portfolio selection, this work helps identify key technologies or technology groupings, and assess their performance on airport metrics. By embedding flexibility in the formulation of investment scenarios, it provides the decision maker with a more accurate picture of the options available to him, as well as the time and sequence under which these should be exercised.

What the Tech Is Going on with Teachers' Digital Teaching Portfolios? Using the TPACK Framework to Analyze Teachers' Technological Understanding

ERIC Educational Resources Information Center

Koehler, Matthew; Greenhalgh, Spencer; Rosenberg, Joshua; Keenan, Sarah

2017-01-01

Despite the growing popularity of digital teaching portfolios, research has remained focused on outcomes associated with "creating" digital teaching portfolios instead of examining how they can be used to effectively "assess" what teachers know, especially when it comes to educational technology. One barrier to using portfolios…

A Portfolio-Based Evaluation of Utah's Education Technology Initiative: 1990-1991 School Year.

ERIC Educational Resources Information Center

Mergendoller, John R.; And Others

This report examines the impact of the Utah Educational Technology Initiative (ETI) on student performance and student access to computers during the initial year of implementation in the 1990-91 school year. Chapter 1 describes ETI goals, the goals of the evaluation report, the concept of portfolio analysis, and organization of the report. An…

Object-Oriented Bayesian Networks (OOBN) for Aviation Accident Modeling and Technology Portfolio Impact Assessment

NASA Technical Reports Server (NTRS)

Shih, Ann T.; Ancel, Ersin; Jones, Sharon M.

2012-01-01

The concern for reducing aviation safety risk is rising as the National Airspace System in the United States transforms to the Next Generation Air Transportation System (NextGen). The NASA Aviation Safety Program is committed to developing an effective aviation safety technology portfolio to meet the challenges of this transformation and to mitigate relevant safety risks. The paper focuses on the reasoning of selecting Object-Oriented Bayesian Networks (OOBN) as the technique and commercial software for the accident modeling and portfolio assessment. To illustrate the benefits of OOBN in a large and complex aviation accident model, the in-flight Loss-of-Control Accident Framework (LOCAF) constructed as an influence diagram is presented. An OOBN approach not only simplifies construction and maintenance of complex causal networks for the modelers, but also offers a well-organized hierarchical network that is easier for decision makers to exploit the model examining the effectiveness of risk mitigation strategies through technology insertions.

Using Teaching Portfolios to Revise Curriculum and Explore Instructional Practices of Technology and Engineering Education Teachers

ERIC Educational Resources Information Center

Lomask, Michal; Crismond, David; Hacker, Michael

2018-01-01

This paper reports on the use of teaching portfolios to assist in curriculum revision and the exploration of instructional practices used by middle school technology and engineering education teachers. Two new middle school technology and engineering education units were developed through the Engineering for All (EfA) project. One EfA unit focused…

Preparedness Portfolios and Portfolio Studios

ERIC Educational Resources Information Center

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…

Electronic Portfolio Assessments In U. S. Educational and Instructional Technology Programs: Are They Supporting Teacher Education?

ERIC Educational Resources Information Center

Lynch, Linda L.; Purnawarman, Pupung

2004-01-01

In recent years portfolios have served increasingly as a vehicle for individual and program evaluation, as well as for career purposes in many fields including education (Galloway, 2001). Nationwide, teacher development programs are being asked to include their students' artifacts in some form of teaching portfolio that will ultimately be used as…

Postoptimality Analysis in the Selection of Technology Portfolios

NASA Technical Reports Server (NTRS)

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.

Developing Electronic Institutional Portfolios for Program and Institutional Assessment.

ERIC Educational Resources Information Center

Borden, Victor M. H.

2002-01-01

Summarizes the lessons learned by the institutions participating in the Urban Universities Portfolio Project regarding the functional and technological requirements for creating and sustaining Web-based institutional portfolios. The most pressing issues were those of aligning technology resources with analytical, evaluative, academic, and design…

IT Portfolio Selection and IT Synergy

ERIC Educational Resources Information Center

Cho, Woo Je

2010-01-01

This dissertation consists of three chapters. The primary objectives of this dissertation are: (1) to provide a methodological framework of IT (Information Technology) portfolio management, and (2) to identify the effect of IT synergy on IT portfolio selection of a firm. The first chapter presents a methodological framework for IT project…

System Architecture Modeling for Technology Portfolio Management using ATLAS

NASA Technical Reports Server (NTRS)

Thompson, Robert W.; O'Neil, Daniel A.

2006-01-01

Strategic planners and technology portfolio managers have traditionally relied on consensus-based tools, such as Analytical Hierarchy Process (AHP) and Quality Function Deployment (QFD) in planning the funding of technology development. While useful to a certain extent, these tools are limited in the ability to fully quantify the impact of a technology choice on system mass, system reliability, project schedule, and lifecycle cost. The Advanced Technology Lifecycle Analysis System (ATLAS) aims to provide strategic planners a decision support tool for analyzing technology selections within a Space Exploration Architecture (SEA). Using ATLAS, strategic planners can select physics-based system models from a library, configure the systems with technologies and performance parameters, and plan the deployment of a SEA. Key parameters for current and future technologies have been collected from subject-matter experts and other documented sources in the Technology Tool Box (TTB). ATLAS can be used to compare the technical feasibility and economic viability of a set of technology choices for one SEA, and compare it against another set of technology choices or another SEA. System architecture modeling in ATLAS is a multi-step process. First, the modeler defines the system level requirements. Second, the modeler identifies technologies of interest whose impact on an SEA. Third, the system modeling team creates models of architecture elements (e.g. launch vehicles, in-space transfer vehicles, crew vehicles) if they are not already in the model library. Finally, the architecture modeler develops a script for the ATLAS tool to run, and the results for comparison are generated.

Decision Gate Process for Assessment of a Technology Development Portfolio

NASA Technical Reports Server (NTRS)

Kohli, Rajiv; Fishman, Julianna; Hyatt, Mark

2012-01-01

The NASA Dust Management Project (DMP) was established to provide technologies (to TRL 6 development level) required to address adverse effects of lunar dust to humans and to exploration systems and equipment, which will reduce life cycle cost and risk, and will increase the probability of sustainable and successful lunar missions. The technology portfolio of DMP consisted of different categories of technologies whose final product is either a technology solution in itself, or one that contributes toward a dust mitigation strategy for a particular application. A Decision Gate Process (DGP) was developed to assess and validate the achievement and priority of the dust mitigation technologies as the technologies progress through the development cycle. The DGP was part of continuous technology assessment and was a critical element of DMP risk management. At the core of the process were technology-specific criteria developed to measure the success of each DMP technology in attaining the technology readiness levels assigned to each decision gate. The DGP accounts for both categories of technologies and qualifies the technology progression from technology development tasks to application areas. The process provided opportunities to validate performance, as well as to identify non-performance in time to adjust resources and direction. This paper describes the overall philosophy of the DGP and the methodology for implementation for DMP, and describes the method for defining the technology evaluation criteria. The process is illustrated by example of an application to a specific DMP technology.

Overview of the NASA Environmentally Responsible Aviation Project's Propulsion Technology Portfolio

NASA Technical Reports Server (NTRS)

Suder, Kenneth L.

2012-01-01

The NASA Environmentally Responsible Aviation (ERA) Project is focused on developing and demonstrating integrated systems technologies to TRL 4-6 by 2020 that enable reduced fuel burn, emissions, and noise for futuristic air vehicles. The specific goals aim to simultaneously reduce fuel burn by 50%, reduce Landing and Take-off Nitrous Oxides emissions by 75% relative to the CAEP 6 guidelines, and reduce cumulative noise by 42 Decibels relative to the Stage 4 guidelines. These goals apply to the integrated vehicle and propulsion system and are based on a reference mission of 3000nm flight of a Boeing 777-200 with GE90 engines. This paper will focus primarily on the ERA propulsion technology portfolio, which consists of advanced combustion, propulsor, and core technologies to enable these integrated air vehicle systems goals. An overview of the ERA propulsion technologies will be described and the status and results to date will be presented.

The Role of the Electronic Portfolio in Enhancing Information and Communication Technology and English Language Skills: The Voices of Six Malaysian Undergraduates

ERIC Educational Resources Information Center

Thang, Siew Ming; Lee, Yit Sim; Zulkifli, Nurul Farhana

2012-01-01

This study investigated the effects of the construction and development of electronic portfolios (e-portfolios) on a small user population at a public university in Malaysia. The study was based on a three-month Information and Communication Technology (ICT) and language learning course offered to the undergraduates of the university. One of the…

Switching portfolios.

PubMed

Singer, Y

1997-08-01

A constant rebalanced portfolio is an asset allocation algorithm which keeps the same distribution of wealth among a set of assets along a period of time. Recently, there has been work on on-line portfolio selection algorithms which are competitive with the best constant rebalanced portfolio determined in hindsight (Cover, 1991; Helmbold et al., 1996; Cover and Ordentlich, 1996). By their nature, these algorithms employ the assumption that high returns can be achieved using a fixed asset allocation strategy. However, stock markets are far from being stationary and in many cases the wealth achieved by a constant rebalanced portfolio is much smaller than the wealth achieved by an ad hoc investment strategy that adapts to changes in the market. In this paper we present an efficient portfolio selection algorithm that is able to track a changing market. We also describe a simple extension of the algorithm for the case of a general transaction cost, including the transactions cost models recently investigated in (Blum and Kalai, 1997). We provide a simple analysis of the competitiveness of the algorithm and check its performance on real stock data from the New York Stock Exchange accumulated during a 22-year period. On this data, our algorithm outperforms all the algorithms referenced above, with and without transaction costs.

Decision Gate Process for Assessment of a NASA Technology Development Portfolio

NASA Technical Reports Server (NTRS)

Kohli, Rajiv; Fishman, Julianna L.; Hyatt, Mark J.

2012-01-01

The NASA Dust Management Project (DMP) was established to provide technologies (to Technology Readiness Level (TRL) 6) required to address adverse effects of lunar dust to humans and to exploration systems and equipment, to reduce life cycle cost and risk, and to increase the probability of sustainable and successful lunar missions. The technology portfolio of DMP consisted of different categories of technologies whose final product was either a technology solution in itself, or one that contributes toward a dust mitigation strategy for a particular application. A Decision Gate Process (DGP) was developed to assess and validate the achievement and priority of the dust mitigation technologies as the technologies progress through the development cycle. The DGP was part of continuous technology assessment and was a critical element of DMP risk management. At the core of the process were technology-specific criteria developed to measure the success of each DMP technology in attaining the technology readiness levels assigned to each decision gate. The DGP accounts for both categories of technologies and qualifies the technology progression from technology development tasks to application areas. The process provided opportunities to validate performance, as well as to identify non-performance in time to adjust resources and direction. This paper describes the overall philosophy of the DGP and the methodology for implementation for DMP, and describes the method for defining the technology evaluation criteria. The process is illustrated by example of an application to a specific DMP technology.

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

PubMed

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/ .

2018 DOE Solid-State Lighting Project Portfolio

DOE Office of Scientific and Technical Information (OSTI.GOV)

None

The 2018 Solid-State Lighting Project Portfolio provides an overview of all SSL projects that have been funded by DOE since 2000. Projects that were active during 2017 are found in the main body of this report, and all historic projects can be found in the appendix. Within these sections, project profiles are sorted by technology type (i.e., LED or OLED) and then by performer name. A profile is provided on each project. Each profile includes a brief technical description, as well as information about project partners, funding, and the research period. This report is updated annually, although the research describedmore » in the Portfolio changes periodically as new projects are initiated and existing ones are concluded.« less

Lessons Learned from the Implementation of Electronic Portfolios at Three Universities

ERIC Educational Resources Information Center

Wilhelm, Lance; Puckett, Kathleen; Beisser, Sally; Wishart, William; Merideth, Eunice; Sivakumaran, Thilla

2006-01-01

Portfolios are used in teacher education programs to provide evidence of pre-service teachers' professional growth and development. As programs are better able to integrate technology into the teacher preparation curriculum, many educational institutions are implementing electronic versions of portfolios (e-portfolios) on a widespread basis. Uses…

Quality Issues in Judging Portfolios: Implications for Organizing Teaching Portfolio Assessment Procedures

ERIC Educational Resources Information Center

Tigelaar, Dineke E. H.; Dolmans, Diana H. J. M.; Wolfhagen, Ineke H. A. P.; van der Vleuten, Cees P. M.

2005-01-01

This article addresses the choice of the most appropriate procedure for the assessment of portfolios used in teacher and lecturer assessment. A characteristic of modern assessment modes, including portfolios, is that the information they provide is often qualitative and derived from different contexts. Unambiguous, objective rating of portfolios…

Acquiring Enterprise Systems as a Portfolio of Real Options

DTIC Science & Technology

2012-04-30

expanded beyond valuing individual projects by the real options method to the valuation of a portfolio of options. Bardhan , Bagchi, and Soustad (2004... Bardhan , I., Bagchi, S., & Soustad, R. (2004). Prioritizing a portfolio of information technology investment projects. Journal of Management

Designing e-Portfolios to Support Professional Teacher Preparation

ERIC Educational Resources Information Center

Tran, Tu; Baker, Robert; Pensavalle, Margo

2006-01-01

Tu Tran, Robert Baker, and Margo Pensavalle present e-portfolio technology as an effective tool in teacher preparation. Because e-portfolios chronicle students' learning outcomes, they provide a picture of students' development that can be used in response to increased demands for assessment of student teachers and increasingly standards-based…

Developing a sustainable electronic portfolio (ePortfolio) program that fosters reflective practice and incorporates CanMEDS competencies into the undergraduate medical curriculum.

PubMed

Hall, Pippa; Byszewski, Anna; Sutherland, Stephanie; Stodel, Emma J

2012-06-01

The University of Ottawa (uOttawa) Faculty of Medicine in 2008 launched a revised undergraduate medical education (UGME) curriculum that was based on the seven CanMEDS roles (medical expert, communicator, collaborator, health advocate, manager, scholar, and professional) and added an eighth role of person to incorporate the dimension of mindfulness and personal well-being. In this article, the authors describe the development of an electronic Portfolio (ePortfolio) program that enables uOttawa medical students to document their activities and to demonstrate their development of competence in each of the eight roles. The ePortfolio program supports reflective practice, an important component of professional competence, and provides a means for addressing the "hidden curriculum." It is bilingual, mandatory, and spans the four years of UGME. It includes both an online component for students to document their personal development and for student-coach dialogue, as well as twice-yearly, small-group meetings in which students engage in reflective discussions and learn to give and receive feedback.The authors reflect on the challenges they faced in the development and implementation of the ePortfolio program and share the lessons they have learned along the way to a successful and sustainable program. These lessons include switching from a complex information technology system to a user-friendly, Web-based blog platform; rethinking orientation sessions to ensure that faculty and students understand the value of the ePortfolio program; soliciting student input to improve the program and increase student buy-in; and providing faculty development opportunities and recognition.

Analysis of the Technology Acceptance Model in Examining Students' Behavioural Intention to Use an e-Portfolio System

ERIC Educational Resources Information Center

Shroff, Ronnie H.; Deneen, Christopher C.; Ng, Eugenia M. W.

2011-01-01

In recent years, instructors have had an increasing interest in integrating Internet based technologies into their classroom as part of the learning environment. Compared to studies on other information systems, student users' behaviour towards e-portfolios have not been assessed and thoroughly understood. This paper analyses the "Technology…

Developing a decision support system for R&D project portfolio selection with interdependencies

NASA Astrophysics Data System (ADS)

Ashrafi, Maryam; Davoudpour, Hamid; Abbassi, Mohammad

2012-11-01

Although investment in research and technology is a promising tool for technology centered organizations through obtaining their objectives, resource constraints make organizations select between their pool of research and technology projects through means of R&D project portfolio selection techniques mitigating corresponding risks and enhancing the overall value of project portfolio.

Learning and Digital Portfolios

ERIC Educational Resources Information Center

Moran, Wendy; Vozzo, Les; Reid, Jo-Anne; Pietsch, Marilyn; Hatton, Caroline

2013-01-01

Utilising appropriate Information Communication Technologies (ICT) as instructional tools in teacher education can be a challenging yet worthwhile endeavour. This paper reports the difficulties and benefits of a recent inter-university project requiring preservice primary teachers to construct professional digital portfolios using the support of…

Using an Online Portfolio Course in Assessing Students' Work

ERIC Educational Resources Information Center

Yilmaz, Harun; Cetinkaya, Bulent

2007-01-01

New developments and advancements in informational technology bring about several alternative avenues for educators to select in supporting and evaluating their students' learning. Online portfolio is a fairly new technique in this regard. As the online education grows, use of online portfolio becomes more vital for educational programs. At…

Enhancing Meta-Cognition Skills by Using Reflective E-Portfolio

ERIC Educational Resources Information Center

Turky, Mohamed Abdullah

2017-01-01

This study aims to investigate the relationship between reflective E-portfolio and metacognition skills from where it is possible to contribute to the exercise levels of reflective thinking through the E-portfolio ultimately leads to the development of metacognition skills. The study was applied on 29 Instructional Technology students at Tanta…

The Effect of Web-Based Portfolio Use on Academic Achievement and Retention

ERIC Educational Resources Information Center

Guzeller, Cem Oktay

2012-01-01

The web-based portfolio emerged as a result of the influence of technological developments on educational practices. In this study, the effect of the web-based portfolio building process on academic achievement and retention is explored. For this purpose, a study platform known as a computer-assisted personal development portfolio was designed for…

The Electronic Student Portfolio.

ERIC Educational Resources Information Center

Fasick, Emily; McLaren, Clemence

1995-01-01

Describes the use of electronic portfolios in one Hawaiian secondary literature class. Students went through their journals, picked two entries that best represented their growth in reading during the course, and explained why. Next they created a presentation about their growth and enjoyment of literature using multimedia technology. (SM)

Assessment Portfolios as Opportunities for Teacher Learning

ERIC Educational Resources Information Center

Gearhart, Maryl; Osmundson, Ellen

2009-01-01

This article is an analysis of the role of assessment portfolios in teacher learning. Over 18 months, 23 science teachers developed, implemented, and evaluated assessments to track student learning, supported by portfolio tasks and resources, grade-level colleagues, and team facilitators. Evidence of teacher learning included (a) portfolios of a…

The Role of Nuclear Power in Reducing Risk of the Fossil Fuel Prices and Diversity of Electricity Generation in Tunisia: A Portfolio Approach

NASA Astrophysics Data System (ADS)

Abdelhamid, Mohamed Ben; Aloui, Chaker; Chaton, Corinne; Souissi, Jomâa

2010-04-01

This paper applies real options and mean-variance portfolio theories to analyze the electricity generation planning into presence of nuclear power plant for the Tunisian case. First, we analyze the choice between fossil fuel and nuclear production. A dynamic model is presented to illustrate the impact of fossil fuel cost uncertainty on the optimal timing to switch from gas to nuclear. Next, we use the portfolio theory to manage risk of the electricity generation portfolio and to determine the optimal fuel mix with the nuclear alternative. Based on portfolio theory, the results show that there is other optimal mix than the mix fixed for the Tunisian mix for the horizon 2010-2020, with lower cost for the same risk degree. In the presence of nuclear technology, we found that the optimal generating portfolio must include 13% of nuclear power technology share.

Quantitative tools link portfolio management with use of technology

DOE Office of Scientific and Technical Information (OSTI.GOV)

Anderson, R.N.; Boulanger, A.; Amaefule, J.

1998-11-30

The exploration and production (E and P) business is in the midst of a major transformation from an emphasis on cost-cutting to more diverse portfolio management practices. The industry has found that it is not easy to simultaneously optimize net present value (NPV), return on investment (ROI), and long-term growth. The result has been the adaptation of quantitative business practices that rival their subsurface geological equivalents in sophistication and complexity. The computational tools assess the risk-reward tradeoffs inherent in the upstream linkages between (1) the application of advanced technologies to improve success in exploration and in exploitation (reservoir evaluation, drilling,more » producing, and delivery to market) and (2) the maximization of both short- and long-term profitability. Exploitation is a critical link to the industry`s E and P profitability, as can be seen from the correlation between earnings growth of the international majors and production growth. The paper discusses the use of tools to optimize exploitation.« less

The Teaching Portfolio: Capturing the Scholarship in Teaching.

ERIC Educational Resources Information Center

Edgerton, Russell; And Others

This report argues a case for the use of professional teaching portfolios by educators in higher education, advances a point of view about portfolio issues, and offers examples of portfolio entries. A work-sample-plus-reflection model is presented as a guide for what might be included in a portfolio and why it might be used at a particular campus.…

Application of Project Portfolio Management

NASA Astrophysics Data System (ADS)

Pankowska, Malgorzata

The main goal of the chapter is the presentation of the application project portfolio management approach to support development of e-Municipality and public administration information systems. The models of how people publish and utilize information on the web have been transformed continually. Instead of simply viewing on static web pages, users publish their own content through blogs and photo- and video-sharing slides. Analysed in this chapter, ICT (Information Communication Technology) projects for municipalities cover the mixture of the static web pages, e-Government information systems, and Wikis. So, for the management of the ICT projects' mixtures the portfolio project management approach is proposed.

Portfolio: a prototype workstation for development and evaluation of tools for analysis and management of digital portal images.

PubMed

Boxwala, A A; Chaney, E L; Fritsch, D S; Friedman, C P; Rosenman, J G

1998-09-01

The purpose of this investigation was to design and implement a prototype physician workstation, called PortFolio, as a platform for developing and evaluating, by means of controlled observer studies, user interfaces and interactive tools for analyzing and managing digital portal images. The first observer study was designed to measure physician acceptance of workstation technology, as an alternative to a view box, for inspection and analysis of portal images for detection of treatment setup errors. The observer study was conducted in a controlled experimental setting to evaluate physician acceptance of the prototype workstation technology exemplified by PortFolio. PortFolio incorporates a windows user interface, a compact kit of carefully selected image analysis tools, and an object-oriented data base infrastructure. The kit evaluated in the observer study included tools for contrast enhancement, registration, and multimodal image visualization. Acceptance was measured in the context of performing portal image analysis in a structured protocol designed to simulate clinical practice. The acceptability and usage patterns were measured from semistructured questionnaires and logs of user interactions. Radiation oncologists, the subjects for this study, perceived the tools in PortFolio to be acceptable clinical aids. Concerns were expressed regarding user efficiency, particularly with respect to the image registration tools. The results of our observer study indicate that workstation technology is acceptable to radiation oncologists as an alternative to a view box for clinical detection of setup errors from digital portal images. Improvements in implementation, including more tools and a greater degree of automation in the image analysis tasks, are needed to make PortFolio more clinically practical.

ePortfolios in Australian Higher Education Arts: Differences and Differentiations

ERIC Educational Resources Information Center

Rowley, Jennifer; Bennett, Dawn

2016-01-01

This paper reports the findings of a project that investigated uses of electronic portfolios (ePortfolios) in the creative and performing arts at four Australian universities and raises four significant areas for discussion: engaging technologies as an ongoing requirement of planning, delivery and evaluation of teaching and learning in higher…

The E-Portfolio Continuum: Discovering Variables for E-Portfolio Adoption within Music Education

ERIC Educational Resources Information Center

Taylor, John; Dunbar-Hall, Peter; Rowley, Jennifer

2012-01-01

This article presents the results of audit data compiled from a case study introducing e-portfolios into a Music Education degree program, and highlights the key challenges faced from the initial stages of student use to curricular embedding and student adoption. This article discusses the technological, social and educational impacts inherent in…

Patent portfolio management: literature review and a proposed model.

PubMed

Conegundes De Jesus, Camila Kiyomi; Salerno, Mario Sergio

2018-05-09

Patents and patent portfolios are gaining attention in the last decades, from the called 'pro-patent era' to the recent billionaire transactions involving patent portfolios. The field is growing in importance, both theoretically and practically and despite having substantial literature on new product development portfolio management, we have not found an article relating this theory to patent portfolios. Areas covered: The paper develops a systematic literature review on patent portfolio management to organize the evolution and tendencies of patent portfolio management, highlighting distinctive features of patent portfolio management. Interview with IP manager of three life sciences companies, including a leading multinational group provided relevant information about patent portfolio management. Expert opinion: Based on the systematic literature review on portfolio management, more specifically, on new product development portfolio theory, and interview the paper proposes the paper proposes a reference model to manage patent portfolios. The model comprises four stages aligned with the three goals of the NPD portfolio management: 1 - Linking strategy of the Company's NPD Portfolio to Patent Portfolio; 2 - Balancing the portfolio in buckets; 3 - Patent Valuation (maximizing valuation); 4 - Regularly reviewing the patent portfolio.

Pedagogy and ePortfolios: Purpose Aligned to Design (or the "Why" and "How")

ERIC Educational Resources Information Center

Watty, Kim; McKay, Jade

2015-01-01

While research surrounding ePortfolios abounds, few studies make explicit the pedagogical underpinnings of their use. Some suggest that the decision to use new technologies, like ePortfolios, is often made in ignorance of pedagogic evidence. Developed over the course of a two-year national study on the implementation of ePortfolios, this paper…

The Development of an ePortfolio as a Capstone in a Holistic Health Minor

ERIC Educational Resources Information Center

Perks, Joan M.; Galantino, Mary Lou

2013-01-01

Use of electronic portfolios (ePortfolios) has been advocated to highlight student accomplishments as well as to document program and course outcomes. This use of ePortfolios incorporates information technology, thus aligning the educational process in degree programs to twenty-first-century teaching, learning, and information literacy. Here we…

Exploring the Influence of Web-Based Portfolio Development on Learning To Teach Elementary Science.

ERIC Educational Resources Information Center

Avraamidou, Lucy; Zembal-Saul, Carla

This study examined how Web-based portfolio development supported reflective thinking and learning within a Professional Development School (PDS). It investigated the evidence-based philosophies developed by prospective teachers as a central part of the Web-based portfolio task, noting how technology contributed to the portfolio task. Participants…

Evaluating Processes and Platforms for Potential ePortfolio Use: The Role of the Middle Agent

ERIC Educational Resources Information Center

Slade, Christine; Murfin, Keith; Readman, Kylie

2013-01-01

With the changing face of higher education comes a demand to include new technological tools. Universities need to build their capacity to respond to new technology-related challenges. The introduction of ePortfolios is a significant strategy in this response. A number of organizational change management models are used to analyze the…

Preparedness Portfolios and Portfolio Studios: Supporting Self-Authoring Engineers

ERIC Educational Resources Information Center

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…

Guidance for ePortfolio Researchers: A Case Study with Implications for the ePortfolio Domain

ERIC Educational Resources Information Center

Kennelly, Emily; Osborn, Debra; Reardon, Robert; Shetty, Becka

2016-01-01

This study examined whether or not students using a career ePortfolio, including a matrix for identifying and reflecting on transferrable skills, enabled them to rate their skills more confidently and positively after a simulated (mock) job interview. Three groups were studied: those completing the skills matrix in the ePortfolio; those using the…

E-Portfolios as a Pedagogical Device in Primary Teacher Education: The AUT University Experience

ERIC Educational Resources Information Center

Maher, Marguerite; Gerbic, Philippa

2009-01-01

Portfolios have a long tradition in teacher education and now these are available in electronic form. At the same time, there are increasing demands for primary teachers to be technologically capable and confident in classrooms. When teacher educators wish to respond through the introduction of new technologies such as e-portfolios, there are…

Portfolios and ICT as Means of Professional Learning in Teacher Education

ERIC Educational Resources Information Center

Hauge, Trond Eiliv

2006-01-01

Teaching portfolios supported by new learning technologies have increased in importance in Norwegian schools and teacher education. However, the learning potentials of integrated e-portfolios have still to be researched and further developed. This article focuses on professional learning in a teacher education programme reorganised by use of…

Performance of finite order distribution-generated universal portfolios

NASA Astrophysics Data System (ADS)

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.

A Guide to Writing Academic Portfolios for Radiologists.

PubMed

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

Portfolios for Majors in Professional Communication.

ERIC Educational Resources Information Center

Killingsworth, M. Jimmie; Sanders, Scott P.

1987-01-01

Suggests general principles for developing assignments where students prepare portfolios that reveal their overall communication skills in addition to the usual job search tools. Emphasizes that students should concentrate on including works in the portfolio with the criteria of quality, variety, professionalism, and maturity in mind. (SKC)

Portfolio Assessment: Increasing Reliability and Validity.

ERIC Educational Resources Information Center

Griffee, Dale

2002-01-01

Addresses the traditional understanding of reliability as it pertains to writing portfolio assessments. Offers a list of practical actions that can be taken to increase assessment reliability, including explicit definitions of what a portfolio holds, rater training, rater burnout, and consistent rating procedures. (Contains 26 references.) (NB)

Risk modelling in portfolio optimization

NASA Astrophysics Data System (ADS)

Lam, W. H.; Jaaman, Saiful Hafizah Hj.; Isa, Zaidi

2013-09-01

Risk management is very important in portfolio optimization. The mean-variance model has been used in portfolio optimization to minimize the investment risk. The objective of the mean-variance model is to minimize the portfolio risk and achieve the target rate of return. Variance is used as risk measure in the mean-variance model. The purpose of this study is to compare the portfolio composition as well as performance between the optimal portfolio of mean-variance model and equally weighted portfolio. Equally weighted portfolio means the proportions that are invested in each asset are equal. The results show that the portfolio composition of the mean-variance optimal portfolio and equally weighted portfolio are different. Besides that, the mean-variance optimal portfolio gives better performance because it gives higher performance ratio than the equally weighted portfolio.

Negotiating Teacher Identity: Exploring the Use of Electronic Teaching Portfolios with Preservice English Teachers

ERIC Educational Resources Information Center

Hallman, Heidi L.

2007-01-01

Electronic portfolio use within the context of a teacher education program is explored in this article. Although the use of e-portfolios has emerged as a topic that integrates new technologies and the education of preservice teachers, little work thus far has documented the complexities involved in the authoring process of e-portfolios. To address…

Status of portfolios in undergraduate medical education in the LCME accredited US medical school.

PubMed

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.

Learning through a portfolio of carbon capture and storage demonstration projects

NASA Astrophysics Data System (ADS)

Reiner, David M.

2016-01-01

Carbon dioxide capture and storage (CCS) technology is considered by many to be an essential route to meet climate mitigation targets in the power and industrial sectors. Deploying CCS technologies globally will first require a portfolio of large-scale demonstration projects. These first projects should assist learning by diversity, learning by replication, de-risking the technologies and developing viable business models. From 2005 to 2009, optimism about the pace of CCS rollout led to mutually independent efforts in the European Union, North America and Australia to assemble portfolios of projects. Since 2009, only a few of these many project proposals remain viable, but the initial rationales for demonstration have not been revisited in the face of changing circumstances. Here I argue that learning is now both more difficult and more important given the slow pace of deployment. Developing a more coordinated global portfolio will facilitate learning across projects and may determine whether CCS ever emerges from the demonstration phase.

Junior doctors' guide to portfolio learning and building.

PubMed

Kitchen, Mark

2012-10-01

A portfolio is a collection of evidence supporting an individual's achievement of competencies and learning outcomes. The material included in the portfolio must be reflected upon, as reflection provides the evidence that learning has taken place. Portfolio learning is important for two principal reasons: assessment of the trainee, and for lifelong learning and reflection. The ability of a portfolio to be used for both summative and formative assessment makes it a flexible and robust assessment method. A portfolio also demonstrates reflection and lifelong learning abilities. Reflective learning is key to postgraduate medical education: it is part of both the Foundation Programme curriculum and General Medical Council guidance on best practice. To ensure correct learning outcomes are identified and evidenced, the curriculum programme must be referred to and an educational supervisor should be consulted. Once identified, it is necessary to: identify how these outcomes can be met (learning needs); decide what needs to be done to meet these needs; reflect on what has been done; and evidence what has been done in the portfolio. Evidence could include written feedback, certificates of course completion, online learning modules, etc. A learning portfolio is a necessary tool for every postgraduate medical trainee. The portfolio serves to record and evidence all learning that has taken place, and thereon acts as a guide for future learning needs. The key process to portfolio building and learning is the provision of evidence by reflecting upon the learning that has taken place. © Blackwell Publishing Ltd 2012.

Creating a Living Portfolio: Documenting Student Growth with Electronic Portfolios.

ERIC Educational Resources Information Center

Siegle, Del

2002-01-01

This article explains how teachers can use electronic portfolios of students' work to document learner progress. It considers different file formats for storing student work, describes steps to creating an electronic portfolio, and discusses an art and literature electronic magazine created by one school featuring work from student portfolios. (CR)

With Portfolio in Hand. Validating the New Teacher Professionalism.

ERIC Educational Resources Information Center

Lyons, Nona, Ed.

This book suggests that portfolios can become a new kind of credential of competent and effective teachers. The book includes 5 parts with 16 chapters. Part 1, "Prologue," offers: (1) "Portfolio Possibilities: Validating a New Teacher Professionalism" (Nona Lyons) and (2) "Teacher Portfolios: A Theoretical Activity"…

SunShot Initiative Portfolio Book 2014

DOE Office of Scientific and Technical Information (OSTI.GOV)

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.

Portfolios in Practice: What Is a Portfolio?

ERIC Educational Resources Information Center

Arter, Judith A.

A consortium effort sponsored by the Northwest Regional Evaluation Association has arrived at a workable definition of a portfolio that takes into account the viewpoints of teachers and those interested in large-scale assessment. The modified definition states that: "A student portfolio is a purposeful collection of student work that tells…

The Use of Portfolios in US Pharmacy Schools

PubMed Central

Cumberland, Denise M.

2018-01-01

Objective. To conduct a review of the pharmacy literature on the use of portfolios in US pharmacy schools. Findings. This study provides examples of how pharmacy schools are using portfolios in various parts and across their curricula, however, assessment/outcome data is lacking. These examples can be used as a starting point for schools as they begin to design their own use of portfolios. Overall, students indicated that the use of portfolios is important in their professional development, but significant time is needed to complete. Summary. Things to consider when implementing a portfolio system include how it will be used, who will review it, and what resources will be needed to sustain the project. It is important for schools to consider these items at the start of the process to ensure the portfolio process that is created is useful for assessing the overall programmatic or course outcomes being proposed by their use. More scholarly work needs to be published on the use of portfolios. PMID:29692438

Linking Portfolio Development to Clinical Supervision: A Case Study.

ERIC Educational Resources Information Center

Zepeda, Sally J.

2002-01-01

Describes a model for portfolio supervision based on the results of a 2-year study of one elementary school's experience in implementing portfolio supervision. Includes four propositions that guided the development of the model. Describes the skills inherent in portfolio supervision. Provides general guidelines for implementation of the portfolio…

E-Portfolios: Concepts, Designs, and Integration within Student Affairs

ERIC Educational Resources Information Center

Garis, Jeff W.

2007-01-01

This chapter provides an overview of e-portfolio concepts and designs. It describes a model that outlines an array of dimensions for the categorization of e-portfolio systems, reviews selected systems, and makes observations regarding the importance for student affairs units to understand, collaborate, and include e-portfolio systems within their…

Leptokurtic portfolio theory

NASA Astrophysics Data System (ADS)

Kitt, R.; Kalda, J.

2006-03-01

The question of optimal portfolio is addressed. The conventional Markowitz portfolio optimisation is discussed and the shortcomings due to non-Gaussian security returns are outlined. A method is proposed to minimise the likelihood of extreme non-Gaussian drawdowns of the portfolio value. The theory is called Leptokurtic, because it minimises the effects from “fat tails” of returns. The leptokurtic portfolio theory provides an optimal portfolio for investors, who define their risk-aversion as unwillingness to experience sharp drawdowns in asset prices. Two types of risks in asset returns are defined: a fluctuation risk, that has Gaussian distribution, and a drawdown risk, that deals with distribution tails. These risks are quantitatively measured by defining the “noise kernel” — an ellipsoidal cloud of points in the space of asset returns. The size of the ellipse is controlled with the threshold parameter: the larger the threshold parameter, the larger return are accepted for investors as normal fluctuations. The return vectors falling into the kernel are used for calculation of fluctuation risk. Analogously, the data points falling outside the kernel are used for the calculation of drawdown risks. As a result the portfolio optimisation problem becomes three-dimensional: in addition to the return, there are two types of risks involved. Optimal portfolio for drawdown-averse investors is the portfolio minimising variance outside the noise kernel. The theory has been tested with MSCI North America, Europe and Pacific total return stock indices.

Concurrent credit portfolio losses.

PubMed

Sicking, Joachim; Guhr, Thomas; Schäfer, Rudi

2018-01-01

We consider the problem of concurrent portfolio losses in two non-overlapping credit portfolios. In order to explore the full statistical dependence structure of such portfolio losses, we estimate their empirical pairwise copulas. Instead of a Gaussian dependence, we typically find a strong asymmetry in the copulas. Concurrent large portfolio losses are much more likely than small ones. Studying the dependences of these losses as a function of portfolio size, we moreover reveal that not only large portfolios of thousands of contracts, but also medium-sized and small ones with only a few dozens of contracts exhibit notable portfolio loss correlations. Anticipated idiosyncratic effects turn out to be negligible. These are troublesome insights not only for investors in structured fixed-income products, but particularly for the stability of the financial sector. JEL codes: C32, F34, G21, G32, H81.

The Electronic Portfolio Boom: What's It All About?

ERIC Educational Resources Information Center

Batson, Trent

2002-01-01

Discusses the use of electronic portfolios in higher education. Highlights include availability of the Web and databases; the growth of vendors in this area; benefits to students, faculty, and administrators, including statistics for accreditation; data storage; data security; certification issues; and a list of ePortfolio tools and resources.…

Teacher Candidate Perceptions of Electronic Portfolios

ERIC Educational Resources Information Center

Baronak, William M.

2011-01-01

Today, many students in higher education are considered digital natives--savvier and more experienced with technology than students in the past. In teacher preparation programs, teacher education students are commonly expected to demonstrate achievement of program goals and objectives and national teaching standards in a "portfolio." Gaining in…

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

PubMed

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

Concurrent credit portfolio losses

PubMed Central

Sicking, Joachim; Schäfer, Rudi

2018-01-01

We consider the problem of concurrent portfolio losses in two non-overlapping credit portfolios. In order to explore the full statistical dependence structure of such portfolio losses, we estimate their empirical pairwise copulas. Instead of a Gaussian dependence, we typically find a strong asymmetry in the copulas. Concurrent large portfolio losses are much more likely than small ones. Studying the dependences of these losses as a function of portfolio size, we moreover reveal that not only large portfolios of thousands of contracts, but also medium-sized and small ones with only a few dozens of contracts exhibit notable portfolio loss correlations. Anticipated idiosyncratic effects turn out to be negligible. These are troublesome insights not only for investors in structured fixed-income products, but particularly for the stability of the financial sector. JEL codes: C32, F34, G21, G32, H81. PMID:29425246

Comparing Students' Perceptions of Paper-Based and Electronic Portfolios

ERIC Educational Resources Information Center

van Wesel, Maarten; Prop, Anouk

2008-01-01

Electronic portfolios offer many advantages to their paper-based counterparts, including, but not limited to working on ICT skills, adding multimedia and easier sharing of the portfolio. Previous research showed that the quality of a portfolio does not depend on the medium used. In this article the perceived support for self-reflection of an…

[SCHWABE Company's patent portfolio of Ginkgo biloba preparation].

PubMed

Liu, Wei; Cheng, Xin-Min; Geng, Dong-Mei; Tan, Wei; Zou, Wen-Jun

2014-09-01

SCHWABE Company in German is the first and largest manufacturer of Ginkgo biloba preparation. The company not only has leading technology in this field, but also protects its own market effectively through the high quality of patent drafting and exactly patent layout. Based on multi-angle analysis for patent portfolio of G. biloba preparation at application time, legal status, globally layout, Chinese layout, the article provides technical reference of research and development of G. biloba, also provides valuable experience of traditonal Chinese medicine patent portfolio layout for Chinese enterprises.

Learning portfolio models in health regulatory colleges of Ontario, Canada.

PubMed

Tompkins, Marianne; Paquette-Frenette, Denise

2010-01-01

Health regulatory colleges promote continued competence by requiring members to submit yearly portfolios that document learning. Previous studies conclude that portfolios can be valuable tools to promote continuous learning in health college members, but portfolios are time-consuming to complete and difficult to evaluate. This exploratory study compares the features of portfolio models in regulatory colleges, as a basis for future studies. Data were collected through a document review of the portfolio models described on the Web sites of 14 Canadian health regulatory colleges. All models contain 3 common components of self-directed learning: (1) self-diagnosis, (2) learning plan and activities, and (3) self-evaluation. Several include member profiles and peer feedback. A broad range of formal, nonformal, and informal activities are accepted as evidence of learning; a few colleges restrict learners' freedom in selecting these activities. There is a dual philosophy of learning in portfolio models that includes both humanist and technical paradigms. Low numbers of members are selected for audit of completed portfolios. The possibility of last-minute preparation and the lack of support to members who struggle with self-directed learning methods are issues to be resolved. Although portfolios are designed to enhance learning and reflection, quality cannot be ensured unless compliance is enforced, and learning outcomes are measured. Professionals should be guided regarding how to complete portfolios. More health regulatory colleges should announce the number of portfolios they audit. In general, the number of portfolios audited by each profession may need to be increased.

78 FR 21045 - Confirmation, Portfolio Reconciliation, Portfolio Compression, and Swap Trading Relationship...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-04-09

... COMMODITY FUTURES TRADING COMMISSION 17 CFR Part 23 RIN 3038-AC96 Confirmation, Portfolio Reconciliation, Portfolio Compression, and Swap Trading Relationship Documentation Requirements for Swap Dealers..., portfolio compression, and swap trading relationship documentation for Swap Dealers and Major Swap...

Measuring Treasury Bond Portfolio Risk and Portfolio Optimization with a Non-Gaussian Multivariate Model

NASA Astrophysics Data System (ADS)

Dong, Yijun

The research about measuring the risk of a bond portfolio and the portfolio optimization was relatively rare previously, because the risk factors of bond portfolios are not very volatile. However, this condition has changed recently. The 2008 financial crisis brought high volatility to the risk factors and the related bond securities, even if the highly rated U.S. treasury bonds. Moreover, the risk factors of bond portfolios show properties of fat-tailness and asymmetry like risk factors of equity portfolios. Therefore, we need to use advanced techniques to measure and manage risk of bond portfolios. In our paper, we first apply autoregressive moving average generalized autoregressive conditional heteroscedasticity (ARMA-GARCH) model with multivariate normal tempered stable (MNTS) distribution innovations to predict risk factors of U.S. treasury bonds and statistically demonstrate that MNTS distribution has the ability to capture the properties of risk factors based on the goodness-of-fit tests. Then based on empirical evidence, we find that the VaR and AVaR estimated by assuming normal tempered stable distribution are more realistic and reliable than those estimated by assuming normal distribution, especially for the financial crisis period. Finally, we use the mean-risk portfolio optimization to minimize portfolios' potential risks. The empirical study indicates that the optimized bond portfolios have better risk-adjusted performances than the benchmark portfolios for some periods. Moreover, the optimized bond portfolios obtained by assuming normal tempered stable distribution have improved performances in comparison to the optimized bond portfolios obtained by assuming normal distribution.

Comprehensive Education Portfolio with a Career Focus

ERIC Educational Resources Information Center

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…

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

PubMed

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.

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

PubMed

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.

A new enhanced index tracking model in portfolio optimization with sum weighted approach

NASA Astrophysics Data System (ADS)

Siew, Lam Weng; Jaaman, Saiful Hafizah; Hoe, Lam Weng

2017-04-01

Index tracking is a portfolio management which aims to construct the optimal portfolio to achieve similar return with the benchmark index return at minimum tracking error without purchasing all the stocks that make up the index. Enhanced index tracking is an improved portfolio management which aims to generate higher portfolio return than the benchmark index return besides minimizing the tracking error. The objective of this paper is to propose a new enhanced index tracking model with sum weighted approach to improve the existing index tracking model for tracking the benchmark Technology Index in Malaysia. The optimal portfolio composition and performance of both models are determined and compared in terms of portfolio mean return, tracking error and information ratio. The results of this study show that the optimal portfolio of the proposed model is able to generate higher mean return than the benchmark index at minimum tracking error. Besides that, the proposed model is able to outperform the existing model in tracking the benchmark index. The significance of this study is to propose a new enhanced index tracking model with sum weighted apporach which contributes 67% improvement on the portfolio mean return as compared to the existing model.

Portfolio langagier en francais (Language Portfolios in French).

ERIC Educational Resources Information Center

Laplante, Bernard; Christiansen, Helen

2001-01-01

Suggests that first-year college students learning French should create a language portfolio that contains documents that illustrate what they have learned in French, along with a brief statement of what linguistic skill the document demonstrates. The goal of the portfolio is to make students more aware of their own learning, their strengths, and…

Navigating Change with a Flexible Portfolio

ERIC Educational Resources Information Center

Tyksinski, Deborah J.

2009-01-01

This case study demonstrates how building a flexible portfolio of services allowed a continuing education (CE) unit to thrive during frequent leadership changes. The case is set in a small state college, State Technology Institute at Mohawk (STIM), which experienced nine leadership changes in as many years. The names of the institution and its…

Teacher Electronic Portfolio and Its Relation to EFL Student Teacher Performance and Attitude

ERIC Educational Resources Information Center

Alshawi, Areej T.; Alshumaimeri, Yousif A.

2017-01-01

E-portfolio is a promising approach to develop teachers into reflective practitioners who show that they can adapt to new technologies, new criteria, and new environments. The current research explored the quality of EFL student teachers' e-portfolios and their attitudes towards using them. The research was conducted on 30 EFL female student…

A portfolio evaluation framework for air transportation improvement projects

NASA Astrophysics Data System (ADS)

Baik, Hyeoncheol

This thesis explores the application of portfolio theory to the Air Transportation System (ATS) improvement. The ATS relies on complexly related resources and different stakeholder groups. Moreover, demand for air travel is significantly increasing relative to capacity of air transportation. In this environment, improving the ATS is challenging. Many projects, which are defined as technologies or initiatives, for improvement have been proposed and some have been demonstrated in practice. However, there is no clear understanding of how well these projects work in different conditions nor of how they interact with each other or with existing systems. These limitations make it difficult to develop good project combinations, or portfolios that maximize improvement. To help address this gap, a framework for identifying good portfolios is proposed. The framework can be applied to individual projects or portfolios of projects. Projects or portfolios are evaluated using four different groups of factors (effectiveness, time-to-implement, scope of applicability, and stakeholder impacts). Portfolios are also evaluated in terms of interaction-determining factors (prerequisites, co-requisites, limiting factors, and amplifying factors) because, while a given project might work well in isolation, interdependencies between projects or with existing systems could result in lower overall performance in combination. Ways to communicate a portfolio to decision makers are also introduced. The framework is unique because (1) it allows using a variety of available data, and (2) it covers diverse benefit metrics. For demonstrating the framework, an application to ground delay management projects serves as a case study. The portfolio evaluation approach introduced in this thesis can aid decision makers and researchers at universities and aviation agencies such as Federal Aviation Administration (FAA), National Aeronautics and Space Administration (NASA), and Department of Defense (DoD), in

Portfolio Assessment.

ERIC Educational Resources Information Center

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…

Integration of a Portfolio-based Approach to Evaluate Aerospace R and D Problem Formulation Into a Parametric Synthesis Tool

NASA Astrophysics Data System (ADS)

Oza, Amit R.

The focus of this study is to improve R&D effectiveness towards aerospace and defense planning in the early stages of the product development lifecycle. Emphasis is on: correct formulation of a decision problem, with special attention to account for data relationships between the individual design problem and the system capability required to size the aircraft, understanding of the meaning of the acquisition strategy objective and subjective data requirements that are required to arrive at a balanced analysis and/or "correct" mix of technology projects, understanding the meaning of the outputs that can be created from the technology analysis, and methods the researcher can use at effectively support decisions at the acquisition and conceptual design levels through utilization of a research and development portfolio strategy. The primary objectives of this study are to: (1) determine what strategy should be used to initialize conceptual design parametric sizing processes during requirements analysis for the materiel solution analysis stage of the product development lifecycle when utilizing data already constructed in the latter phase when working with a generic database management system synthesis tool integration architecture for aircraft design , and (2) assess how these new data relationships can contribute for innovative decision-making when solving acquisition hardware/technology portfolio problems. As such, an automated composable problem formulation system is developed to consider data interactions for the system architecture that manages acquisition pre-design concept refinement portfolio management, and conceptual design parametric sizing requirements. The research includes a way to: • Formalize the data storage and implement the data relationship structure with a system architecture automated through a database management system. • Allow for composable modeling, in terms of level of hardware abstraction, for the product model, mission model, and

Prospective Teachers' Perceptions on Different Aspects of Portfolio

ERIC Educational Resources Information Center

Ok, Ahmet; Erdogan, Mehmet

2010-01-01

This qualitative-case study examined how portfolio and portfolio assessment were perceived by prospective teachers. The participants were 23 prospective teachers from seven different teaching areas from a Turkish university. A semi-structured individual interview was conducted. The interview schedule included 15 open-ended questions. The main…

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

PubMed

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.

Divergent estimation error in portfolio optimization and in linear regression

NASA Astrophysics Data System (ADS)

Kondor, I.; Varga-Haszonits, I.

2008-08-01

The problem of estimation error in portfolio optimization is discussed, in the limit where the portfolio size N and the sample size T go to infinity such that their ratio is fixed. The estimation error strongly depends on the ratio N/T and diverges for a critical value of this parameter. This divergence is the manifestation of an algorithmic phase transition, it is accompanied by a number of critical phenomena, and displays universality. As the structure of a large number of multidimensional regression and modelling problems is very similar to portfolio optimization, the scope of the above observations extends far beyond finance, and covers a large number of problems in operations research, machine learning, bioinformatics, medical science, economics, and technology.

Sparse and stable Markowitz portfolios.

PubMed

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.

Sparse and stable Markowitz portfolios

PubMed Central

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

2009-01-01

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. PMID:19617537

Dynamic Portfolio Strategy Using Clustering Approach

PubMed Central

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

Dynamic Portfolio Strategy Using Clustering Approach.

PubMed

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.

On-Line Support and Portfolio Assessment for NETS-T Standards In Pre-Service Programs at a Large Southeastern University.

ERIC Educational Resources Information Center

Shoffner, Mary B.; Dias, Laurie B.

This paper details the theoretical underpinnings of one university's approach to technology integration in its pre-service teacher preparation programs, and the results of a continuous, feedback-driven project to evaluate for technology integration through a student portfolio development process. Portfolios are assessed for multiple education and…

Impacts of a 10% Renewable Portfolio Standard

EIA Publications

2002-01-01

This service report addresses the renewable portfolio standard provision of S. 1766. At Senator Murkowski's request it also includes an analysis of the impacts of a renewable portfolio standard (RPS) patterned after the one called for in S. 1766, but where the required share is based on a 20% RPS by 2020 rather than the 10% RPS called for in S. 1766.

Factors That Contribute to ePortfolio Persistence

ERIC Educational Resources Information Center

Thibodeaux, Tilisa; Cummings, Cynthia; Harapnuik, Dwayne

2017-01-01

This study examined factors that contributed to persistent use, or discontinued use, of ePortfolios beyond the program of study, as perceived by former educational technology students in a graduate program. The related literature points to contemporary research that choice, ownership, voice, and authentic learning are growing trends emerging as…

A ubiquitous reflective e-portfolio architecture.

PubMed

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

Profiles and portfolios of adolescent school-based extracurricular activity participation.

PubMed

Feldman, A F; Matjasko, J L

2007-04-01

The current study presented a new description of adolescent school-based activity participation, in the form of mutually exclusive activity portfolios, and described the kinds of youth that participate in each portfolio. These portfolios included (1) Sports Only, (2) Academics Only, (3) School Only, (4) Performance Only, (5) Multiple Activities, and (6) Non-Participation. Findings indicated that youth demographic characteristics and school size differentiated between different kinds of activity participation as well as nonparticipation. More detailed activity portfolios were also identified that were complex and demonstrate the difficulty of examining participation beyond larger, more inclusive groupings. The Multiple Activity portfolio emerged as a unique group worthy of further examination. Characteristics of non-participators included: lower socioeconomic status, lower grades, and attended larger schools. Hispanic adolescents were also less likely to participate in school-based extracurricular activities. Findings from this study inform ecological models of adolescent development as well as school and social policy.

Real-world datasets for portfolio selection and solutions of some stochastic dominance portfolio models.

PubMed

Bruni, Renato; Cesarone, Francesco; Scozzari, Andrea; Tardella, Fabio

2016-09-01

A large number of portfolio selection models have appeared in the literature since the pioneering work of Markowitz. However, even when computational and empirical results are described, they are often hard to replicate and compare due to the unavailability of the datasets used in the experiments. We provide here several datasets for portfolio selection generated using real-world price values from several major stock markets. The datasets contain weekly return values, adjusted for dividends and for stock splits, which are cleaned from errors as much as possible. The datasets are available in different formats, and can be used as benchmarks for testing the performances of portfolio selection models and for comparing the efficiency of the algorithms used to solve them. We also provide, for these datasets, the portfolios obtained by several selection strategies based on Stochastic Dominance models (see "On Exact and Approximate Stochastic Dominance Strategies for Portfolio Selection" (Bruni et al. [2])). We believe that testing portfolio models on publicly available datasets greatly simplifies the comparison of the different portfolio selection strategies.

A diversified portfolio model of adaptability.

PubMed

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).

Using portfolios to assess learning in chemistry: One school's story of evolving assessment practice

NASA Astrophysics Data System (ADS)

Weaver, Starlin Dawn

The purpose of this study was to investigate the process of implementing an alternative form of assessment in chemistry classrooms. The current reform of science education involves the implementation of varied forms of instruction; it stands to reason that assessment will evolve with the curriculum (Baxter, Shavelson, Goldman & Pine, 1992). In an era for which the exclusive use of multiple-choice and similar tests i.e., fill-in the-blank, matching, and true/false are inappropriate measures of student abilities (Hamm & Adams, 1991), portfolios can offer a suitable alternative assessment, as well as a means for evaluation (Paulson, Paulson & Meyer, 1991). This study was conducted in a small math, science and technology high school and focused on three individual teachers and twelve of their students. The research focused on how teachers defined portfolios and implemented this assessment tool in their classrooms and how students and teachers perceived the use and value of the process. This study employed qualitative methodology using individual interviews, document analyses, and classroom observations. Data sources included documents, transcripts of interviews and fieldnotes. The primary research questions were: How do the teachers define and implement portfolios? How do the teachers' definitions of portfolios change during implementation? What are the students' understandings of portfolios and how they are used and do the students' understandings change? What do teachers and students believe portfolios represent regarding the learning that occurs in the science classroom? and What do the data collected via this study demonstrate about portfolios as a valid means of assessing student progress? The teachers' and students' definitions addressed four of the six components of portfolios identified in the literature. Both groups recognized a defined use, evidence, student and teacher made decisions, and reflection as key portfolio elements. Each group failed to identify

Learning to Select Supplier Portfolios for Service Supply Chain

PubMed Central

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

Portfolio optimization with mean-variance model

NASA Astrophysics Data System (ADS)

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.

Learning from Portfolios: Differential Use of Feedback in Portfolio Construction.

ERIC Educational Resources Information Center

Tillema, Harm H.; Smith, Kari

2000-01-01

Studied how students used feedback information provided them in distinctly framed portfolios of dossier, reflective, and learning-oriented types. Results with 137 college students support a view of portfolio construction in which the individual benefits from feedback were closely linked to the intentions present during collection of the portfolio…

Developing Multimedia Career Portfolios in Australia: Opportunities and Obstacles.

ERIC Educational Resources Information Center

Hartnell-Young, Elizabeth

2001-01-01

Multimedia career portfolios can be displayed on CD-ROMs, laptops, or the Internet. Developing them provides an opportunity to acquire and demonstrate technology skills. Multimedia presentations reduce information overload and appeal to different communication styles. (Contains 20 references.) (SK)

ePortfolio as a Measure of Reflective Practice

ERIC Educational Resources Information Center

Parkes, Kelly A.; Dredger, Katie S.; Hicks, David

2013-01-01

This instructional article outlines the qualities of effective ePortfolios and how reflection and student growth is measured. Student exemplars and assessment rubrics show how, despite changing tools and evolving standards, sustained collaboration and student coaching yields reflective practitioners in content areas and in technological knowledge.…

Evaluation of an established learning portfolio.

PubMed

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.

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

ERIC Educational Resources Information Center

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…

The Role of e-Portfolios in Supporting Productive Learning

ERIC Educational Resources Information Center

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…

Development of a web-based, specialty specific portfolio.

PubMed

Clay, A S; Petrusa, E; Harker, M; Andolsek, K

2007-05-01

This article illustrates the creation of a specialty specific portfolio that can be used by several different residency programs to document resident competence during a given rotation. Three different disciplines (anesthesiology, surgery and medicine) worked together to create a critical care medicine portfolio. We began by reviewing the curriculum requirements for critical care medicine and organized these requirements into the six ACGME core competencies. We then developed learner led exercises in each core competency that were specific to critical care. Each exercise includes assessment of resident knowledge and application, an evaluation of the exercise, a learner self-assessment of skill, and a review of performance by a faculty member. Portfolio entries are highlighted in a multi-disciplinary weekly conference and posted on a critical care web site at our University. Creation of specialty specific portfolio reduces redundancy between disciplines, allows for increased time to be spent on the development of exercises specific to rotation objectives, and aids program directors in the collection of portfolio entries for each resident over the course of a residency.

Wavelet evolutionary network for complex-constrained portfolio rebalancing

NASA Astrophysics Data System (ADS)

Suganya, N. C.; Vijayalakshmi Pai, G. A.

2012-07-01

Portfolio rebalancing problem deals with resetting the proportion of different assets in a portfolio with respect to changing market conditions. The constraints included in the portfolio rebalancing problem are basic, cardinality, bounding, class and proportional transaction cost. In this study, a new heuristic algorithm named wavelet evolutionary network (WEN) is proposed for the solution of complex-constrained portfolio rebalancing problem. Initially, the empirical covariance matrix, one of the key inputs to the problem, is estimated using the wavelet shrinkage denoising technique to obtain better optimal portfolios. Secondly, the complex cardinality constraint is eliminated using k-means cluster analysis. Finally, WEN strategy with logical procedures is employed to find the initial proportion of investment in portfolio of assets and also rebalance them after certain period. Experimental studies of WEN are undertaken on Bombay Stock Exchange, India (BSE200 index, period: July 2001-July 2006) and Tokyo Stock Exchange, Japan (Nikkei225 index, period: March 2002-March 2007) data sets. The result obtained using WEN is compared with the only existing counterpart named Hopfield evolutionary network (HEN) strategy and also verifies that WEN performs better than HEN. In addition, different performance metrics and data envelopment analysis are carried out to prove the robustness and efficiency of WEN over HEN strategy.

Acquisition Management for System of Systems: Affordability through Effective Portfolio Management

DTIC Science & Technology

2013-04-01

the management of strategic “ portfolios of systems” in military acquisitions; this includes application of Real Options (RO) theory and metrics such...Affordability Through Effective Portfolio Management Navindran Davendralingam and Daniel DeLaurentis Purdue University Published April 1, 2013...Systems: Affordability Through Effective Portfolio Management 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d

12 CFR 347.108 - Portfolio investments.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Portfolio investments. 347.108 Section 347.108... 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 CFR 347.108 - Portfolio investments.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 12 Banks and Banking 4 2011-01-01 2011-01-01 false Portfolio investments. 347.108 Section 347.108... 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...

17 CFR 270.2a-46 - Certain issuers as eligible portfolio companies.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 17 Commodity and Securities Exchanges 3 2010-04-01 2010-04-01 false Certain issuers as eligible portfolio companies. 270.2a-46 Section 270.2a-46 Commodity and Securities Exchanges SECURITIES AND EXCHANGE... eligible portfolio companies. The term eligible portfolio company shall include any issuer that meets the...

AVC/H.264 patent portfolio license

NASA Astrophysics Data System (ADS)

Horn, Lawrence A.

2004-11-01

MPEG LA, LLC recently announced terms of a joint patent license for the AVC (a/k/a H.264) Standard (ISO/IEC IS 14496-10: Information technology -- Coding of audio-visual objects -- Part 10: Advanced Video Coding | ITU-T Rec. H.264: Series H: Audiovisual and Multimedia Systems: Infrastructure of audiovisual services -- Coding of moving video: Advanced video coding for generic audiovisual services). 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 Columbia Innovation Enterprises; Electronics and Telecommunications Research Institute (ETRI); France Télécom, société anonyme; Fujitsu Limited; Koninklijke Philips Electronics N.V.; Matsushita Electric Industrial Co., Ltd.; Microsoft Corporation; Mitsubishi Electric Corporation; Robert Bosch GmbH; Samsung Electronics Co., Ltd.; Sharp Kabushiki Kaisha; Sony Corporation; Toshiba Corporation; and Victor Company of Japan, Limited. 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.

Successful healthcare programs and projects: organization portfolio management essentials.

PubMed

Pickens, Scott; Solak, Jamie

2005-01-01

Many healthcare organization projects take more time and resources than planned and fail to deliver desired business outcomes. Healthcare IT is a major component of many projects and often undeservedly receives the blame for failure. Poor results are often not a result of faulty healthcare IT or poor project management or poor project execution alone. Many projects fail because of poor portfolio management--poor planning and management of the portfolio of initiatives designed to meet an organization's strategic goals. Because resources are limited, portfolio management enables organizations to more strategically allocate and manage their resources so care delivery, service delivery, and initiatives that advance organizations toward their strategic goals, including healthcare IT initiatives, can be accomplished at the levels of quality and service desired by an organization. Proper portfolio management is the essential foundation for program and project success and supports overall organization success. Without portfolio management, even programs and projects that execute flawlessly may not meet desired objectives. This article discusses the essential requirements for porfolio management. These include opportunity identification, return on investment (ROI) forecast, project prioritization, capacity planning (inclusive of human, financial, capital, and facilities resources), work scheduling, program and project management and execution, and project performance and value assessment. Portfolio management is essential to successful healthcare project execution. Theories are drawn from the Organizational Project Management Maturity Model (OPM3) work of the Project Management Institute and other leading strategy, planning, and organization change management research institutes.

Portfolios in Saudi medical colleges

PubMed Central

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

Markowitz portfolio optimization model employing fuzzy measure

NASA Astrophysics Data System (ADS)

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.

Portfolio Assessment and Quality Teaching

ERIC Educational Resources Information Center

Kim, Youb; Yazdian, Lisa Sensale

2014-01-01

Our article focuses on using portfolio assessment to craft quality teaching. Extant research literature on portfolio assessment suggests that the primary purpose of assessment is to serve learning, and portfolio assessments facilitate the process of making linkages among assessment, curriculum, and student learning (Asp, 2000; Bergeron, Wermuth,…

Portfolio Analysis for Vector Calculus

ERIC Educational Resources Information Center

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…

Using Electronic Portfolios

ERIC Educational Resources Information Center

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,…

Digital Portfolios: Fact or Fashion?

ERIC Educational Resources Information Center

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…

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

PubMed

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.

Student Engagement with E-Portfolios: Purpose, Benefits and Problems

ERIC Educational Resources Information Center

Thanaraj, Ann

2012-01-01

This paper reports on a phenomenographic study about the different ways that undergraduate law students understood and conceptualised the idea of e-portfolios as used on their programme. The aim of the study was to investigate variations in conceptions of e-portfolios, including their purpose, benefits and problems as experienced by students. The…

Portfolio Management

NASA Technical Reports Server (NTRS)

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

E-Portfolios Come of Age

ERIC Educational Resources Information Center

Waters, John K.

2009-01-01

Industry analysts say the systems have reached a mature adolescence, having grown from mere electronic filing cabinets into multimedia platforms that can operate with a variety of e-learning tools. Their fullest potential still lies ahead. This article talks about electronic portfolios--better known as e-portfolios, and how e-portfolios are taking…

[Development of a portfolio for competency-based assessment in a clinical clerkship curriculum].

PubMed

Roh, HyeRin; Lee, Jong-Tae; Yoon, Yoo Sang; Rhee, Byoung Doo

2015-12-01

The purpose of this report was to describe our experience in planning and developing a portfolio for a clinical clerkship curriculum. We have developed a portfolio for assessing student competency since 2007. During an annual workshop on clinical clerkship curricula, clerkship directors from five Paik hospitals of Inje University met to improve the assessment of the portfolio. We generated templates for students to record their activities and reflection and receive feedback. We uploaded these templates to our school's website for students to download freely. Annually, we have held a faculty development seminar and a workshop for portfolio assessment and feedback. Also, we established an orientation program on how to construct a learning portfolio for students. Future actions include creating a ubiquitous portfolio system, extending the portfolio to the entire curriculum, setting up an advisor system, and managing the quality of the portfolio. This study could be helpful for medical schools that plan to improve their portfolio assessment with an outcome-based approach.

Strategic biopharmaceutical portfolio development: an analysis of constraint-induced implications.

PubMed

George, Edmund D; Farid, Suzanne S

2008-01-01

Optimizing the structure and development pathway of biopharmaceutical drug portfolios are core concerns to the developer that come with several attached complexities. These include strategic decisions for the choice of drugs, the scheduling of critical activities, and the possible involvement of third parties for development and manufacturing at various stages for each drug. Additional complexities that must be considered include the impact of making such decisions in an uncertain environment. Presented here is the development of a stochastic multi-objective optimization framework designed to address these issues. The framework harnesses the ability of Bayesian networks to characterize the probabilistic structure of superior decisions via machine learning and evolve them to multi-objective optimality. Case studies that entailed three- and five-drug portfolios alongside a range of cash flow constraints were constructed to derive insight from the framework where results demonstrate that a variety of options exist for formulating nondominated strategies in the objective space considered, giving the manufacturer a range of pursuable options. In all cases limitations on cash flow reduce the potential for generating profits for a given probability of success. For the sizes of portfolio considered, results suggest that naïvely applying strategies optimal for a particular size of portfolio to a portfolio of another size is inappropriate. For the five-drug portfolio the most preferred means for development across the set of optimized strategies is to fully integrate development and commercial activities in-house. For the three-drug portfolio, the preferred means of development involves a mixture of in-house, outsourced, and partnered activities. Also, the size of the portfolio appears to have a larger impact on strategy and the quality of objectives than the magnitude of cash flow constraint.

Portfolio Preparation Tips for Teachers

ERIC Educational Resources Information Center

Hunter-Lombardi, Brooke

2008-01-01

As college deadlines loom, teachers may wonder if there is a magic portfolio formula for their students to follow. After twenty years of thought on portfolio development and the opportunity to review over 10,000 individual portfolios, the author is convinced that there is no single formula for success. With hard work, careful planning, and…

Portfolio Based Management

ERIC Educational Resources Information Center

Daigneau, William A.

2010-01-01

In this article, the author talks about Portfolio Management, a concept used to make allocation decisions in the world of financial investments. While much has been written about Portfolio theory, and the term is widely used in the facilities management industry, little is really understood about the concept and its real-world application. The…

Portfolio careers for medical graduates: implications for postgraduate training and workforce planning.

PubMed

Eyre, Harris A; Mitchell, Rob D; Milford, Will; Vaswani, Nitin; Moylan, Steven

2014-06-01

Portfolio careers in medicine can be defined as significant involvement in one or more portfolios of activity beyond a practitioner's primary clinical role, either concurrently or in sequence. Portfolio occupations may include medical education, research, administration, legal medicine, the arts, engineering, business and consulting, leadership, politics and entrepreneurship. Despite significant interest among junior doctors, portfolios are poorly integrated with prevocational and speciality training programs in Australia. The present paper seeks to explore this issue. More formal systems for portfolio careers in Australia have the potential to increase job satisfaction, flexibility and retention, as well as diversify trainee skill sets. Although there are numerous benefits from involvement in portfolio careers, there are also risks to the trainee, employing health service and workforce modelling. Formalising pathways to portfolio careers relies on assessing stakeholder interest, enhancing flexibility in training programs, developing support programs, mentorship and coaching schemes and improving support structures in health services.

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

Federal Register 2010, 2011, 2012, 2013, 2014

2010-12-28

... systemic risk, portfolio reconciliation should be a proactive process that delivers a consolidated view of... achieved by portfolio compression, in turn, may lessen systemic risk and enhance the overall stability of...

NASA Technology Transfer System

NASA Technical Reports Server (NTRS)

Tran, Peter B.; Okimura, Takeshi

2017-01-01

NTTS is the IT infrastructure for the Agency's Technology Transfer (T2) program containing 60,000+ technology portfolio supporting all ten NASA field centers and HQ. It is the enterprise IT system for facilitating the Agency's technology transfer process, which includes reporting of new technologies (e.g., technology invention disclosures NF1679), protecting intellectual properties (e.g., patents), and commercializing technologies through various technology licenses, software releases, spinoffs, and success stories using custom built workflow, reporting, data consolidation, integration, and search engines.

Electronic Portfolios May Answer Calls for More Accountability

ERIC Educational Resources Information Center

Basken, Paul

2008-01-01

A decade ago, the Rose-Hulman Institute of Technology had a few simple goals. It wanted to sharpen its educational mission, broaden students' skills, improve graduates' job-placement rates, and give the institution better ammunition for proving its worth to accreditors. It turned to the "electronic portfolio," becoming one of a small but growing…

Purpose and Pedagogy: A Conceptual Model for an ePortfolio

ERIC Educational Resources Information Center

Buyarski, Catherine A.; Aaron, Robert W.; Hansen, Michele J.; Hollingsworth, Cynthia D.; Johnson, Charles A.; Kahn, Susan; Landis, Cynthia M.; Pedersen, Joan S.; Powell, Amy A.

2015-01-01

This conceptual model emerged from the need to balance multiple purposes and perspectives associated with developing an ePortfolio designed to promote student development and success. A comprehensive review of literature from various disciplines, theoretical frameworks, and scholarship, including self-authorship, reflection, ePortfolio pedagogy,…

E-Portfolios@Teacher Training: An Evaluation of Technological and Motivational Factors

ERIC Educational Resources Information Center

Klampfer, Alfred; Köhler, Thomas

2013-01-01

In recent years e-portfolios have received a great deal of attention in the educational discourse and it is associated with individualization of the learning process, competence-oriented assessment and institutional personnel development. Since the beginning of the academic year 2008/09 students of the Catholic College of Education Linz had the…

Evaluating Practice-Based Learning and Improvement: Efforts to Improve Acceptance of Portfolios

PubMed Central

Fragneto, Regina Y.; DiLorenzo, Amy Noel; Schell, Randall M.; Bowe, Edwin A.

2010-01-01

Introduction The Accreditation Council for Graduate Medical Education (ACGME) recommends resident portfolios as 1 method for assessing competence in practice-based learning and improvement. In July 2005, when anesthesiology residents in our department were required to start a portfolio, the residents and their faculty advisors did not readily accept this new requirement. Intensive education efforts addressing the goals and importance of portfolios were undertaken. We hypothesized that these educational efforts improved acceptance of the portfolio and retrospectively audited the portfolio evaluation forms completed by faculty advisors. Methods Intensive education about the goals and importance of portfolios began in January 2006, including presentations at departmental conferences and one-on-one education sessions. Faculty advisors were instructed to evaluate each resident's portfolio and complete a review form. We retrospectively collected data to determine the percentage of review forms completed by faculty. The portfolio reviews also assessed the percentage of 10 required portfolio components residents had completed. Results Portfolio review forms were completed by faculty advisors for 13% (5/38) of residents during the first advisor-advisee meeting in December 2005. Initiation of intensive education efforts significantly improved compliance, with review forms completed for 68% (26/38) of residents in May 2006 (P < .0001) and 95% (36/38) in December 2006 (P < .0001). Residents also significantly improved the completeness of portfolios between May and December of 2006. Discussion Portfolios are considered a best methods technique by the ACGME for evaluation of practice-based learning and improvment. We have found that intensive education about the goals and importance of portfolios can enhance acceptance of this evaluation tool, resulting in improved compliance in completion and evaluation of portfolios. PMID:22132291

Evaluating practice-based learning and improvement: efforts to improve acceptance of portfolios.

PubMed

Fragneto, Regina Y; Dilorenzo, Amy Noel; Schell, Randall M; Bowe, Edwin A

2010-12-01

The Accreditation Council for Graduate Medical Education (ACGME) recommends resident portfolios as 1 method for assessing competence in practice-based learning and improvement. In July 2005, when anesthesiology residents in our department were required to start a portfolio, the residents and their faculty advisors did not readily accept this new requirement. Intensive education efforts addressing the goals and importance of portfolios were undertaken. We hypothesized that these educational efforts improved acceptance of the portfolio and retrospectively audited the portfolio evaluation forms completed by faculty advisors. Intensive education about the goals and importance of portfolios began in January 2006, including presentations at departmental conferences and one-on-one education sessions. Faculty advisors were instructed to evaluate each resident's portfolio and complete a review form. We retrospectively collected data to determine the percentage of review forms completed by faculty. The portfolio reviews also assessed the percentage of 10 required portfolio components residents had completed. Portfolio review forms were completed by faculty advisors for 13% (5/38) of residents during the first advisor-advisee meeting in December 2005. Initiation of intensive education efforts significantly improved compliance, with review forms completed for 68% (26/38) of residents in May 2006 (P < .0001) and 95% (36/38) in December 2006 (P < .0001). Residents also significantly improved the completeness of portfolios between May and December of 2006. Portfolios are considered a best methods technique by the ACGME for evaluation of practice-based learning and improvment. We have found that intensive education about the goals and importance of portfolios can enhance acceptance of this evaluation tool, resulting in improved compliance in completion and evaluation of portfolios.

Applying the partitioned multiobjective risk method (PMRM) to portfolio selection.

PubMed

Reyes Santos, Joost; Haimes, Yacov Y

2004-06-01

The analysis of risk-return tradeoffs and their practical applications to portfolio analysis paved the way for Modern Portfolio Theory (MPT), which won Harry Markowitz a 1992 Nobel Prize in Economics. A typical approach in measuring a portfolio's expected return is based on the historical returns of the assets included in a portfolio. On the other hand, portfolio risk is usually measured using volatility, which is derived from the historical variance-covariance relationships among the portfolio assets. This article focuses on assessing portfolio risk, with emphasis on extreme risks. To date, volatility is a major measure of risk owing to its simplicity and validity for relatively small asset price fluctuations. Volatility is a justified measure for stable market performance, but it is weak in addressing portfolio risk under aberrant market fluctuations. Extreme market crashes such as that on October 19, 1987 ("Black Monday") and catastrophic events such as the terrorist attack of September 11, 2001 that led to a four-day suspension of trading on the New York Stock Exchange (NYSE) are a few examples where measuring risk via volatility can lead to inaccurate predictions. Thus, there is a need for a more robust metric of risk. By invoking the principles of the extreme-risk-analysis method through the partitioned multiobjective risk method (PMRM), this article contributes to the modeling of extreme risks in portfolio performance. A measure of an extreme portfolio risk, denoted by f(4), is defined as the conditional expectation for a lower-tail region of the distribution of the possible portfolio returns. This article presents a multiobjective problem formulation consisting of optimizing expected return and f(4), whose solution is determined using Evolver-a software that implements a genetic algorithm. Under business-as-usual market scenarios, the results of the proposed PMRM portfolio selection model are found to be compatible with those of the volatility-based model

The Development of E-Portfolio Evaluation Criteria and Application to the Blackboard LMS E-Portfolio

ERIC Educational Resources Information Center

McKenna, Gary F.; Stansfield, Mark H.

2012-01-01

The purpose of this paper is to develop e-portfolio evaluation criteria which will be used to review the Blackboard LMS e-portfolio being used at one Higher Education (HE) institution in the UK as evaluation criteria for reviewing e-portfolio provision does not exist in the literature. The approach taken was to initiate a wide literature search…

Portfolio Assessment of Multicultural Counseling Competency.

ERIC Educational Resources Information Center

Coleman, Hardin L. K.

1996-01-01

Presents portfolio assessment as an alternate approach to the measurement of multicultural counseling competency, and evaluates the strengths and weaknesses of portfolio assessment. Identifies the effectiveness of portfolio assessment in stimulating the development of further counseling competence. (SNR)

Universal portfolios generated by the Bregman divergence

NASA Astrophysics Data System (ADS)

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.

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

ERIC Educational Resources Information Center

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…

A Mean variance analysis of arbitrage portfolios

NASA Astrophysics Data System (ADS)

Fang, Shuhong

2007-03-01

Based on the careful analysis of the definition of arbitrage portfolio and its return, the author presents a mean-variance analysis of the return of arbitrage portfolios, which implies that Korkie and Turtle's results ( B. Korkie, H.J. Turtle, A mean-variance analysis of self-financing portfolios, Manage. Sci. 48 (2002) 427-443) are misleading. A practical example is given to show the difference between the arbitrage portfolio frontier and the usual portfolio frontier.

Analysis of optoelectronic strategic planning in Taiwan by artificial intelligence portfolio tool

NASA Astrophysics Data System (ADS)

Chang, Rang-Seng

1992-05-01

Taiwan ROC has achieved significant advances in the optoelectronic industry with some Taiwan products ranked high in the world market and technology. Six segmentations of optoelectronic were planned. Each one was divided into several strategic items, design artificial intelligent portfolio tool (AIPT) to analyze the optoelectronic strategic planning in Taiwan. The portfolio is designed to provoke strategic thinking intelligently. This computer- generated strategy should be selected and modified by the individual. Some strategies for the development of the Taiwan optoelectronic industry also are discussed in this paper.

The Development of Statistics Textbook Supported with ICT and Portfolio-Based Assessment

NASA Astrophysics Data System (ADS)

Hendikawati, Putriaji; Yuni Arini, Florentina

2016-02-01

This research was development research that aimed to develop and produce a Statistics textbook model that supported with information and communication technology (ICT) and Portfolio-Based Assessment. This book was designed for students of mathematics at the college to improve students’ ability in mathematical connection and communication. There were three stages in this research i.e. define, design, and develop. The textbooks consisted of 10 chapters which each chapter contains introduction, core materials and include examples and exercises. The textbook developed phase begins with the early stages of designed the book (draft 1) which then validated by experts. Revision of draft 1 produced draft 2 which then limited test for readability test book. Furthermore, revision of draft 2 produced textbook draft 3 which simulated on a small sample to produce a valid model textbook. The data were analysed with descriptive statistics. The analysis showed that the Statistics textbook model that supported with ICT and Portfolio-Based Assessment valid and fill up the criteria of practicality.

Examiner perceptions of a portfolio assessment process.

PubMed

Davis, Margery H; Ponnamperuma, Gominda G

2010-01-01

The portfolio assessment process is important for assessing learner achievement. To study examiner perceptions of Dundee Medical School's portfolio assessment process, in years 4 and 5 of the 5-year curriculum, in relation to: outcomes as a framework for the portfolio assessment process; portfolio content; portfolio assessment process; end points of the portfolio assessment process; appropriateness of the two part final exam format and examiner training. A questionnaire containing statements and open questions was used to obtain examiner feedback. Responses to each statement were compared over 3 years: 1999, 2000 and 2003. Response rates were 100%, 88% and 61% in 1999, 2002 and 2003, respectively. Examiners were positive about the ability of institutionally set learning outcomes (Dundee 12 exit learning outcomes) to provide a framework for the portfolio assessment process. They found difficulties, however, with the volume of portfolio content and the time allocated to assess it. Agreeing a grade for each learning outcome for the candidate with their co-examiner did not present difficulties. The comprehensive, holistic picture of the candidate provided by the portfolio assessment process was perceived to be one of its strengths. Examiners were supportive of the final examination format, and were satisfied with their briefing about the process. The 12 exit learning outcomes of Dundee curriculum provide an appropriate framework for the portfolio assessment process, but the content of the portfolio requires fine-tuning particularly with regard to quantity. Time allocated to examiners for the portfolio assessment process needs to be balanced against practicability. The holistic picture of the candidate provided by the process was one of its strengths.

The Cart before the Horse? Exploring the Potential of ePortfolios in a Western Australian Medical School

ERIC Educational Resources Information Center

Bate, Frank; Macnish, Jean; Skinner, Chris

2016-01-01

In 2014, the School of Medicine Fremantle of the University of Notre Dame Australia initiated a study to explore the curriculum underpinning portfolios used by first-year medical students. The School had used portfolios since 2005 and judged it timely to consider digital technologies as a mechanism to enhance student learning and improve…

The Use of Portfolios for Teacher Evaluation.

ERIC Educational Resources Information Center

Lengeling, M. Martha

A discussion of the use of portfolios for teacher evaluation reviews common uses of portfolios in higher education and offers suggestions for portfolio construction. It is noted that portfolios are frequently used for evaluation of both learner and teacher performance, as a means of documenting an individual's capabilities and skills. Some…

Field experiments on solar geoengineering: report of a workshop exploring a representative research portfolio.

PubMed

Keith, David W; Duren, Riley; MacMartin, Douglas G

2014-12-28

We summarize a portfolio of possible field experiments on solar radiation management (SRM) and related technologies. The portfolio is intended to support analysis of potential field research related to SRM including discussions about the overall merit and risk of such research as well as mechanisms for governing such research and assessments of observational needs. The proposals were generated with contributions from leading researchers at a workshop held in March 2014 at which the proposals were critically reviewed. The proposed research dealt with three major classes of SRM proposals: marine cloud brightening, stratospheric aerosols and cirrus cloud manipulation. The proposals are summarized here along with an analysis exploring variables such as space and time scale, risk and radiative forcing. Possible gaps, biases and cross-cutting considerations are discussed. Finally, suggestions for plausible next steps in the development of a systematic research programme are presented.

Examining the target levels of state renewable portfolio standards

NASA Astrophysics Data System (ADS)

Helwig, Laurence Douglas

At present 37 U.S. states have passed Renewable Portfolio Standards (RPS) or have a legislative driven goal that supports investment in renewable energy (RE) technologies. Previous research has identified economic, governmental, ideological and infrastructural characteristics as key predictors of policy adoption and renewable energy deployment efforts (Carley, 2009; Davis & Davis, 2009; Bohn & Lant, 2009; Lyon & Yin, 2010). To date, only a few studies have investigated the target levels of renewable portfolio standards. Carley & Miller (2012) found that policies of differing stringencies were motivated by systematically different factors that included governmental ideology. The purpose of this dissertation is to replicate and expand upon earlier models that predicted RPS adoption and RE deployment efforts by adding regulatory, infrastructural and spatial characteristics to predict RPS target levels. Hypotheses were tested using three alternative measurements of RPS target level strength to determine to what extent a combination of explanatory variables explain variation in policy target levels. Multivariate linear regression and global spatial autocorrelation results indicated that multiple state internal determinants influenced RPS target level including average electricity price, state government ideology and to a lesser extent actual RE potential capacity. In addition, some diffusion effects were found to exist that indicated that states are setting their RPS target levels lower than their neighboring states and a local geo-spatial clustering effect was observed in the target levels for a grouping of northeastern states.

12 CFR 702.104 - Risk portfolios defined.

Code of Federal Regulations, 2011 CFR

2011-01-01

... CORRECTIVE ACTION Net Worth Classification § 702.104 Risk portfolios defined. A risk portfolio is a portfolio... 12 Banks and Banking 6 2011-01-01 2011-01-01 false Risk portfolios defined. 702.104 Section 702... or mature within the next five (5) years, and exclusive of all member business loans (as defined in...

From Aggregation to Interpretation: How Assessors Judge Complex Data in a Competency-Based Portfolio

ERIC Educational Resources Information Center

Oudkerk Pool, Andrea; Govaerts, Marjan J. B.; Jaarsma, Debbie A. D. C.; Driessen, Erik W.

2018-01-01

While portfolios are increasingly used to assess competence, the validity of such portfolio-based assessments has hitherto remained unconfirmed. The purpose of the present research is therefore to further our understanding of how assessors form judgments when interpreting the complex data included in a competency-based portfolio. Eighteen…

ePortfolios and Interdisciplinary Adult Degree Programs

ERIC Educational Resources Information Center

Bryant, Layne Ray; Rust, Dianna Zeh; Fox-Horton, Julie; Johnson, Amy Denise

2017-01-01

This article discusses the use of ePortfolios in interdisciplinary online adult degree programs at two universities. Whereas one university uses the ePortfolio only in a capstone course, the other institution introduces the ePortfolio in an introductory course that focuses on goal setting and then has students add content to the ePortfolio in the…

Portfolios, Power, and Ethics

ERIC Educational Resources Information Center

Lynch, Brian; Shaw, Peter

2005-01-01

Portfolios have been used in a variety of ways for assessing student work. In education, generally, and more specifically in second language education, portfolios have been associated with alternative assessment (Darling-Hammond, 1994; Hamayan, 1995; Shohamy, 1996; Wolf, Bixby, Glenn, & Gardener, 1991). This article defines "alternative…

Portfolio-based Teacher Assessment.

ERIC Educational Resources Information Center

Curry, Stacie; Cruz, John

2000-01-01

Educators in the Fowler (California) Unified School District have found that teacher evaluation portfolios help link improvement and accountability concerns in the peer review process. Portfolios that are structured around professional standards and the school's accountability goals are a good way to measure teacher effectiveness. Implementation…

Problems, Pitfalls, and Benefits of Portfolios.

ERIC Educational Resources Information Center

Stone, Bernice A.

1998-01-01

Two groups of student teachers, one school-based and one university-based, were introduced to portfolio construction. School-based students received more guidance in and time for portfolio construction. Surveys and interviews indicated that the extra time and guidance helped school-based students, who benefited more from portfolios than…

Teaching Portfolios and the Beginning Teacher.

ERIC Educational Resources Information Center

Zubizarreta, John

1994-01-01

Teaching portfolios are becoming the most effective tool to improve new and seasoned teachers' instruction via a supportive, convincing evaluation method. In taking a concentrated three days to write a creditable portfolio, a new teacher feels more competent to think about teaching. The portfolio's process of written reflection invokes the power…

Build Better ePortfolios

ERIC Educational Resources Information Center

Zuger, Sascha

2008-01-01

Tech-using educators know the many benefits of ePortfolios. They help get a handle on kids' interests, difficulties, and strengths. Techno-loving student thrive on the real-time interaction. Administrators like that ePortfolios record student progress digitally, making a convenient shared resource between students, parents, and other teachers.…

Qualitative study of the impact of an authentic electronic portfolio in undergraduate medical education.

PubMed

Belcher, Rosie; Jones, Anna; Smith, Laura-Jane; Vincent, Tim; Naidu, Sindhu Bhaarrati; Montgomery, Julia; Haq, Inam; Gill, Deborah

2014-12-17

Portfolios are increasingly used in undergraduate and postgraduate medical education. Four medical schools have collaborated with an established NHS electronic portfolio provider to develop and implement an authentic professional electronic portfolio for undergraduate students. We hypothesized that using an authentic portfolio would have significant advantages for students, particularly in familiarizing them with the tool many will continue to use for years after graduation. This paper describes the early evaluation of this undergraduate portfolio at two participating medical schools. To gather data, a questionnaire survey with extensive free text comments was used at School 1, and three focus groups were held at School 2. This paper reports thematic analysis of students' opinions expressed in the free text comments and focus groups. Five main themes, common across both schools were identified. These concerned the purpose, use and acceptability of the portfolio, advantages of and barriers to the use of the portfolio, and the impacts on both learning and professional identity. An authentic portfolio mitigated some of the negative aspects of using a portfolio, and had a positive effect on students' perception of themselves as becoming past of the profession. However, significant barriers to portfolio use remained, including a lack of understanding of the purpose of a portfolio and a perceived damaging effect on feedback.

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

ERIC Educational Resources Information Center

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…

Performance of the reverse Helmbold universal portfolio

NASA Astrophysics Data System (ADS)

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.

Field experiments on solar geoengineering: report of a workshop exploring a representative research portfolio

PubMed Central

Keith, David W.; Duren, Riley; MacMartin, Douglas G.

2014-01-01

We summarize a portfolio of possible field experiments on solar radiation management (SRM) and related technologies. The portfolio is intended to support analysis of potential field research related to SRM including discussions about the overall merit and risk of such research as well as mechanisms for governing such research and assessments of observational needs. The proposals were generated with contributions from leading researchers at a workshop held in March 2014 at which the proposals were critically reviewed. The proposed research dealt with three major classes of SRM proposals: marine cloud brightening, stratospheric aerosols and cirrus cloud manipulation. The proposals are summarized here along with an analysis exploring variables such as space and time scale, risk and radiative forcing. Possible gaps, biases and cross-cutting considerations are discussed. Finally, suggestions for plausible next steps in the development of a systematic research programme are presented. PMID:25404684

Portfolio evaluation of health programs: a reply to Sendi et al.

PubMed

Bridges, John F P; Terris, Darcey D

2004-05-01

Sendi et al. (Soc. Sci. Med. 57 (2003) 2207) extend previous research on cost-effectiveness analysis to the evaluation of a portfolio of interventions with risky outcomes using a "second best" approach that can identify improvements in efficiency in the allocation of resources. This method, however, cannot be used to directly identify the optimal solution to the resource allocation problem. Theoretically, a stricter adherence to the foundations of portfolio theory would permit direct optimization in portfolio selection, however, when we include uncertainty in our analysis in addition to the traditional concept of risk (which is often mislabelled uncertainty) complexities are introduced that create significant hurdles in the development of practical applications of portfolio theory for health care policy decision making.

Realistic Goals and Processes for Future Space Astronomy Portfolio Planning

NASA Astrophysics Data System (ADS)

Morse, Jon

2015-08-01

It is generally recognized that international participation and coordination is highly valuable for maximizing the scientific impact of modern space science facilities, as well as for cost-sharing reasons. Indeed, all large space science missions, and most medium and small missions, are international, even if one country or space agency has a clear leadership role and bears most of the development costs. International coordination is a necessary aspect of future mission planning, but how that coordination is done remains debatable. I propose that the community's scientific vision is generally homogeneous enough to permit international coordination of decadal-scale strategic science goals. However, the timing and budget allocation/funding mechanisms of individual countries and/or space agencies are too disparate for effective long-term strategic portfolio planning via a single international process. Rather, I argue that coordinated space mission portfolio planning is a natural consequence of international collaboration on individual strategic missions. I review the process and outcomes of the U.S. 2010 decadal survey in astronomy & astrophysics from the perspective of a government official who helped craft the survey charter and transmitted guidance to the scientific community on behalf of a sponsoring agency (NASA), while continuing to manage the current portfolio that involved ongoing negotiations with other space agencies. I analyze the difficulties associated with projecting long-term budgets, obtaining realistic mission costs (including the additional cost burdens of international partnerships), and developing new (possibly transformational) technologies. Finally, I remark on the future role that privately funded space science missions can have in accomplishing international science community goals.

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

ERIC Educational Resources Information Center

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…

Performance of salmon fishery portfolios across western North America.

PubMed

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

Performance of salmon fishery portfolios across western North America

PubMed Central

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

2014-01-01

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

Improving the Quality of Evidence-Based Writing Entries in Electronic Portfolios

ERIC Educational Resources Information Center

Denton, David W.

2012-01-01

The problem investigated in this study was whether entries written to an electronic portfolio by preservice teachers improved in quality after an intervention was deployed. The study also compared portfolio metadata to writing quality scores to determine whether there was a relationship. Participants included a convenience sample of 11…

Ant colony algorithm for clustering in portfolio optimization

NASA Astrophysics Data System (ADS)

Subekti, R.; Sari, E. R.; Kusumawati, R.

2018-03-01

This research aims to describe portfolio optimization using clustering methods with ant colony approach. Two stock portfolios of LQ45 Indonesia is proposed based on the cluster results obtained from ant colony optimization (ACO). The first portfolio consists of assets with ant colony displacement opportunities beyond the defined probability limits of the researcher, where the weight of each asset is determined by mean-variance method. The second portfolio consists of two assets with the assumption that each asset is a cluster formed from ACO. The first portfolio has a better performance compared to the second portfolio seen from the Sharpe index.

Computational Support for Technology- Investment Decisions

NASA Technical Reports Server (NTRS)

Adumitroaie, Virgil; Hua, Hook; Lincoln, William; Block, Gary; Mrozinski, Joseph; Shelton, Kacie; Weisbin, Charles; Elfes, Alberto; Smith, Jeffrey

2007-01-01

Strategic Assessment of Risk and Technology (START) is a user-friendly computer program that assists human managers in making decisions regarding research-and-development investment portfolios in the presence of uncertainties and of non-technological constraints that include budgetary and time limits, restrictions related to infrastructure, and programmatic and institutional priorities. START facilitates quantitative analysis of technologies, capabilities, missions, scenarios and programs, and thereby enables the selection and scheduling of value-optimal development efforts. START incorporates features that, variously, perform or support a unique combination of functions, most of which are not systematically performed or supported by prior decision- support software. These functions include the following: Optimal portfolio selection using an expected-utility-based assessment of capabilities and technologies; Temporal investment recommendations; Distinctions between enhancing and enabling capabilities; Analysis of partial funding for enhancing capabilities; and Sensitivity and uncertainty analysis. START can run on almost any computing hardware, within Linux and related operating systems that include Mac OS X versions 10.3 and later, and can run in Windows under the Cygwin environment. START can be distributed in binary code form. START calls, as external libraries, several open-source software packages. Output is in Excel (.xls) file format.

An Electronic Portfolio to Support Learning

ERIC Educational Resources Information Center

Wade, Anne; Abrami, Philip C.; Sclater, Jennifer

2005-01-01

In this paper, we provide a description of a CSLP research project that looked at portfolio use within a middle school, the web-based e-portfolio software we have developed within the context of the Quebec educational system, our plans for further development of the tool, and our research plans related to the use of portfolios to support learning.…

Assessment and Assurance of Learning Using E-Portfolios

ERIC Educational Resources Information Center

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…

12 CFR 1252.1 - Enterprise portfolio holding criteria.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 12 Banks and Banking 7 2010-01-01 2010-01-01 false Enterprise portfolio holding criteria. 1252.1 Section 1252.1 Banks and Banking FEDERAL HOUSING FINANCE AGENCY ENTERPRISES PORTFOLIO HOLDINGS § 1252.1 Enterprise portfolio holding criteria. The Enterprises are required to comply with the portfolio holdings...

Moving Nursing Program Portfolio Assessment From Midterm to End of Program: Lessons Learned.

PubMed

Hickey, Kari; Rossetti, Jeanette; Oldenburg, Nancy; Abendroth, Maryann; Uhlken, Connie; Musker, Kathleen; Peters, Bradley; Paramore, Patricia

Portfolio assessment promotes a culture of evidence, evaluates program outcomes, and provides an opportunity to assess the acquisition of knowledge and skills that are not easily assessed by examinations and other traditional assessment methods in nursing curricula. The portfolio program of 1 Midwestern school of nursing recently moved portfolio assessment to the end of program. The process of this change including logistics, rubric development, and lessons learned is highlighted.

Mean-Reverting Portfolio With Budget Constraint

NASA Astrophysics Data System (ADS)

Zhao, Ziping; Palomar, Daniel P.

2018-05-01

This paper considers the mean-reverting portfolio design problem arising from statistical arbitrage in the financial markets. We first propose a general problem formulation aimed at finding a portfolio of underlying component assets by optimizing a mean-reversion criterion characterizing the mean-reversion strength, taking into consideration the variance of the portfolio and an investment budget constraint. Then several specific problems are considered based on the general formulation, and efficient algorithms are proposed. Numerical results on both synthetic and market data show that our proposed mean-reverting portfolio design methods can generate consistent profits and outperform the traditional design methods and the benchmark methods in the literature.

Can Social Networks and E-Portfolio be Used together for Enhancing Learning Effects and Attitudes?

ERIC Educational Resources Information Center

Baris, M. Fatih; Tosun, Nilgun

2013-01-01

As the choices that information technologies offer has increased, efficiency of these at education, the area and time it covers increases, as well. E-portfolio and social networks are the latest choices that informational technologies offer. In this study, both technologies have been used at education and results have been analyzed. For that…

Managing the University Patent Portfolio and Making It Attractive to Licensees: A Commonsense Approach

ERIC Educational Resources Information Center

Garabedian, Todd E.; Galletta, Elizabeth A.

2005-01-01

Building an attractive patent and technology portfolio for potential licensees requires involvement and diligence by the technology transfer office and the inventors. Steps outlined in this article, such as proper treatment of IP to assure rights are not lost, preventing premature disclosures, assuring proper ownership and inventorship of…

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

ERIC Educational Resources Information Center

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…

Validity of portfolio assessment: which qualities determine ratings?

PubMed

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.

7 CFR 4290.885 - Disposition of assets to RBIC's Associates or to competitors of Portfolio Concerns.

Code of Federal Regulations, 2010 CFR

2010-01-01

... competitors of Portfolio Concerns. 4290.885 Section 4290.885 Agriculture Regulations of the Department of... Portfolio Concerns. Except with the Secretary's prior written approval, you are not permitted to dispose of assets (including assets acquired in liquidation) to any Associate or to competitors of Portfolio...

E-Portfolio Evaluation and Vocabulary Learning: Moving from Pedagogy to Andragogy

ERIC Educational Resources Information Center

Sharifi, Maryam; Soleimani, Hassan; Jafarigohar, Manoochehr

2017-01-01

Current trends in the field of educational technology indicate a shift in pedagogical assumptions and theoretical frameworks that favor active involvement of self-directed learners in a constructivist environment. This study probes the influence of electronic portfolio evaluation on vocabulary learning of Iranian university students and the…

Empirical performance of the multivariate normal universal portfolio

NASA Astrophysics Data System (ADS)

Tan, Choon Peng; Pang, Sook Theng

2013-09-01

Universal portfolios generated by the multivariate normal distribution are studied with emphasis on the case where variables are dependent, namely, the covariance matrix is not diagonal. The moving-order multivariate normal universal portfolio requires very long implementation time and large computer memory in its implementation. With the objective of reducing memory and implementation time, the finite-order universal portfolio is introduced. Some stock-price data sets are selected from the local stock exchange and the finite-order universal portfolio is run on the data sets, for small finite order. Empirically, it is shown that the portfolio can outperform the moving-order Dirichlet universal portfolio of Cover and Ordentlich[2] for certain parameters in the selected data sets.

Portfolio optimization with skewness and kurtosis

NASA Astrophysics Data System (ADS)

Lam, Weng Hoe; Jaaman, Saiful Hafizah Hj.; Isa, Zaidi

2013-04-01

Mean and variance of return distributions are two important parameters of the mean-variance model in portfolio optimization. However, the mean-variance model will become inadequate if the returns of assets are not normally distributed. Therefore, higher moments such as skewness and kurtosis cannot be ignored. Risk averse investors prefer portfolios with high skewness and low kurtosis so that the probability of getting negative rates of return will be reduced. The objective of this study is to compare the portfolio compositions as well as performances between the mean-variance model and mean-variance-skewness-kurtosis model by using the polynomial goal programming approach. The results show that the incorporation of skewness and kurtosis will change the optimal portfolio compositions. The mean-variance-skewness-kurtosis model outperforms the mean-variance model because the mean-variance-skewness-kurtosis model takes skewness and kurtosis into consideration. Therefore, the mean-variance-skewness-kurtosis model is more appropriate for the investors of Malaysia in portfolio optimization.

Student Evaluations of the Portfolio Process

PubMed Central

Airey, Tatum C.; Bisso, Andrea M.; Slack, Marion K.

2011-01-01

Objective. To evaluate pharmacy students’ perceived benefits of the portfolio process and to gather suggestions for improving the process. Methods. A questionnaire was designed and administered to 250 first-, second-, and third-year pharmacy students at the University of Arizona College of Pharmacy. Results. 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. Conclusions. 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. PMID:21969718

Student evaluations of the portfolio process.

PubMed

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.

Portfolio selection and asset pricing under a benchmark approach

NASA Astrophysics Data System (ADS)

Platen, Eckhard

2006-10-01

The paper presents classical and new results on portfolio optimization, as well as the fair pricing concept for derivative pricing under the benchmark approach. The growth optimal portfolio is shown to be a central object in a market model. It links asset pricing and portfolio optimization. The paper argues that the market portfolio is a proxy of the growth optimal portfolio. By choosing the drift of the discounted growth optimal portfolio as parameter process, one obtains a realistic theoretical market dynamics.

Vast Portfolio Selection with Gross-exposure Constraints*

PubMed Central

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

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

ERIC Educational Resources Information Center

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…

Why ePortfolios? Student Perceptions of ePortfolio Use in Continuing Education Learning Environments

ERIC Educational Resources Information Center

Wuetherick, Brad; Dickinson, John

2015-01-01

Over the past decade, there has been an increased exploration of ePortfolios in higher education across disciplines at both the undergraduate and graduate level. ePortfolios have been significantly under-explored, however, in the context of non-traditional continuing education environments within higher education. This paper explores students'…

Operationalizing the Student Electronic Portfolio for Doctoral Nursing Education.

PubMed

Willmarth-Stec, Melissa; Beery, Teresa

2015-01-01

There is an increasing trend toward use of the electronic portfolio (e-portfolio) in Doctor of Nursing Practice programs. E-portfolios can provide documentation of competencies and achievement of program outcomes while showcasing a holistic view of the student achievement. Implementation of the e-portfolio requires careful decision making concerning software selection, set-up, portfolio components, and evaluation. The purpose of this article is to describe the implementation of an e-portfolio in a Doctor of Nursing Practice program and provide lessons learned during the implementation stage.

Using Electronic Portfolios for Second Language Assessment

ERIC Educational Resources Information Center

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…

Technology Area Roadmap for In Space Propulsion Technologies

NASA Technical Reports Server (NTRS)

Johnson, Les; Meyer, Mike; Coote, David; Goebel, Dan; Palaszewski, Bryan; White, Sonny

2010-01-01

This slide presentation reviews the technology area (TA) roadmap to develop propulsion technologies that will be used to enable further exploration of the solar system, and beyond. It is hoped that development of the technologies within this TA will result in technical solutions that will improve thrust levels, specific impulse, power, specific mass, volume, system mass, system complexity, operational complexity, commonality with other spacecraft systems, manufacturability and durability. Some of the propulsion technologies that are reviewed include: chemical and non-chemical propulsion, and advanced propulsion (i.e., those with a Technology Readiness level of less than 3). Examples of these advanced technologies include: Beamed Energy, Electric Sail, Fusion, High Energy Density Materials, Antimatter, Advanced Fission and Breakthrough propulsion technologies. Timeframes for development of some of these propulsion technologies are reviewed, and top technical challenges are reviewed. This roadmap describes a portfolio of in-space propulsion technologies that can meet future space science and exploration needs.

A mobile clinical e-portfolio for nursing and medical students, using wireless personal digital assistants (PDAs).

PubMed

Garrett, Bernard Mark; Jackson, Cathryn

2006-12-01

This paper outlines the development and evaluation of a wireless personal digital assistant (PDA) based clinical learning tool designed to promote professional reflection for health professionals. The "Clinical e-portfolio" was developed at the University of British Columbia School of Nursing to enable students immediately to access clinical expertise and resources remotely, and record their clinical experiences in a variety of media (text, audio and images). The PDA e-portfolio tool was developed to demonstrate the potential use of mobile networked technologies to support and improve clinical learning; promote reflective learning in practice; engage students in the process of knowledge translation; help contextualize and embed clinical knowledge whilst in the workplace; and to help prevent the isolation of students whilst engaged in supervised clinical practice. The mobile e-portfolio was developed to synchronise wirelessly with a user's personal Web based portfolio from any remote location where a cellular telephone signal or wireless (Wi-Fi) connection could be obtained. An evaluation of the tool was undertaken with nurse practitioner and medical students, revealing positive attitudes to the use of PDA based tools and portfolios, but limits to the use of the PDA portfolio due to the inherent interface restrictions of the PDA.

Robust Portfolio Optimization Using Pseudodistances.

PubMed

Toma, Aida; Leoni-Aubin, Samuela

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.

Robust Portfolio Optimization Using Pseudodistances

PubMed Central

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

Does health affect portfolio choice?

PubMed

Love, David A; Smith, Paul A

2010-12-01

A number of recent studies find that poor health is empirically associated with a safer portfolio allocation. It is difficult to say, however, whether this relationship is truly causal. Both health status and portfolio choice are influenced by unobserved characteristics such as risk attitudes, impatience, information, and motivation, and these unobserved factors, if not adequately controlled for, can induce significant bias in the estimates of asset demand equations. Using the 1992-2006 waves of the Health and Retirement Study, we investigate how much of the connection between health and portfolio choice is causal and how much is due to the effects of unobserved heterogeneity. Accounting for unobserved heterogeneity with fixed effects and correlated random effects models, we find that health does not appear to significantly affect portfolio choice among single households. For married households, we find a small effect (about 2-3 percentage points) from being in the lowest of five self-reported health categories. Copyright © 2009 John Wiley & Sons, Ltd.

The type k universal portfolio generated by the f-divergence

NASA Astrophysics Data System (ADS)

Tan, Choon Peng; Seng, Kuang Kee

2017-11-01

The logarithm of the estimated next-day wealth return is approximated by k terms of its Taylor series. The resulting Type k universal portfolio generated by the f -divergence is obtained. An implicit form of the portfolio is also obtained by exploiting the mean-value theorem. An empirical study of the performance of the portfolio is focused on the Type 2 Helmbold universal portfolio. A few generalizations of the Helmbold universal portfolio have recently been studied, namely the reverse Helmbold and the parametric Helmbold portfolios. This new type of portfolio can be regarded a contribution to the inventory of Helmbold related universal portfolios. It is verified experimentally that an investor's wealth can be significantly increased by using the Type 2 Helmbold portfolio in investment.

Universal portfolios generated by weakly stationary processes

NASA Astrophysics Data System (ADS)

Tan, Choon Peng; Pang, Sook Theng

2014-12-01

Recently, a universal portfolio generated by a set of independent Brownian motions where a finite number of past stock prices are weighted by the moments of the multivariate normal distribution is introduced and studied. The multivariate normal moments as polynomials in time consequently lead to a constant rebalanced portfolio depending on the drift coefficients of the Brownian motions. For a weakly stationary process, a different type of universal portfolio is proposed where the weights on the stock prices depend only on the time differences of the stock prices. An empirical study is conducted on the returns achieved by the universal portfolios generated by the Ornstein-Uhlenbeck process on selected stock-price data sets. Promising results are demonstrated for increasing the wealth of the investor by using the weakly-stationary-process-generated universal portfolios.

Academic Misconduct in Teaching Portfolios

ERIC Educational Resources Information Center

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…

Do Portfolios Have a Future?

ERIC Educational Resources Information Center

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…

Reflection during Portfolio-Based Conversations

ERIC Educational Resources Information Center

Oosterbaan, Anne E.; van der Schaaf, Marieke F.; Baartman, Liesbeth K. J.; Stokking, Karel M.

2010-01-01

This study aims to explore the relationship between the occurrence of reflection (and non-reflection) and thinking activities (e.g., orientating, selecting, analysing) during portfolio-based conversations. Analysis of 21 transcripts of portfolio-based conversations revealed that 20% of the segments were made up of reflection (content reflection…

E-Portfolio for Enhancing Graduate Research Supervision

ERIC Educational Resources Information Center

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…

Robust Active Portfolio Management

DTIC Science & Technology

2006-11-27

the Markowitz mean-variance model led to development of the Capital Asset Pricing Model ( CAPM ) for asset pricing [35, 29, 23] which remains one of the...active portfolio management. Our model uses historical returns and equilibrium expected returns predicted by the CAPM to identify assets that are...incorrectly priced in the market. There is a fundamental inconsistency between the CAPM and active portfolio management. The CAPM assumes that markets are

Electronic Portfolios in Tenure and Promotion Decisions: Making a Virtual Case.

ERIC Educational Resources Information Center

Blair, Kristine

A current problem at many American universities is that tenure and promotion procedures continue to privilege print-based evidence of teaching and research productivity, or do not acknowledge the impact of technology on teaching, scholarship, and service. Despite these problems, this paper makes the case for electronic teaching portfolios as…

Formal Method of Description Supporting Portfolio Assessment

ERIC Educational Resources Information Center

Morimoto, Yasuhiko; Ueno, Maomi; Kikukawa, Isao; Yokoyama, Setsuo; Miyadera, Youzou

2006-01-01

Teachers need to assess learner portfolios in the field of education. However, they need support in the process of designing and practicing what kind of portfolios are to be assessed. To solve the problem, a formal method of describing the relations between the lesson forms and portfolios that need to be collected and the relations between…

Making practice transparent through e-portfolio.

PubMed

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.

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

Code of Federal Regulations, 2010 CFR

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...

Shaping the Portfolio Course: The Uses of Direct Assessment and the Portfolio as a Critical Thinking Tool.

ERIC Educational Resources Information Center

Gruber, Loren C.

A composition teacher at Northwest Missouri State University completely redesigned the freshman composition course to include writing portfolios while meeting state requirements for direct assessment and allaying departmental fears. A unit on language history and a half-dozen literature selections were dropped in favor of timed, in-class essay…

ePortfolios Meet Social Software

ERIC Educational Resources Information Center

Waters, John K.

2007-01-01

Although a seemingly good idea, electronic portfolios have to date failed to gain significant traction in higher education. Institutions with ePortfolio implementations routinely report high numbers of accounts on their campuses, but few believe that those numbers are a meaningful reflection of actual usage. Change is in the air for the…

Portfolios: An Alternative Method of Student and Program Assessment

PubMed Central

Hannam, Susan E.

1995-01-01

The use of performance-based evaluation and alternative assessment techniques has become essential for curriculum programs seeking Commission of Accreditation of Allied Health Education Programs (CAAHEP) accreditation. In athletic training education, few assessment models exist to assess student performance over the entire course of their educational program. This article describes a model of assessment-a student athletic training portfolio of “best works.” The portfolio can serve as a method to assess student development and to assess program effectiveness. The goals of the program include purposes specific to the five NATA performance domains. In addition, four types of portfolio evidence are described: artifacts, attestations, productions, and reproductions. Quality assignments and projects completed by students as they progress through a six-semester program are identified relative to the type of evidence and the domain(s) they represent. The portfolio assists with student development, provides feedback for curriculum planning, allows for student/faculty collaboration and “coaching” of the student, and assists with job searching. This information will serve as a useful model for those athletic training programs looking for an alternative method of assessing student and program outcomes. PMID:16558359

Effective Faculty Evaluation at the Teaching-Centered University: Building a Fair and Authentic Portfolio of Faculty Work

ERIC Educational Resources Information Center

Lakin, Amy L.

2016-01-01

Purpose: The purpose of this paper is to determine the most fair, authentic, and reliable elements to include in a portfolio of faculty work, specifically at teaching-centered institutions. Design/methodology/approach: This paper examines and evaluates relevant literature pertaining to faculty portfolios of work and recommends portfolio formats…

Evaluating Portfolio Use as a Learning Tool for Professionals.

ERIC Educational Resources Information Center

Smith, Kari; Tillema, Harm

1998-01-01

Studies of portfolio construction and compilation involving 35 Israeli principals and 14 Dutch managers show that high-quality portfolios can only be expected after sustained use, but that the use of portfolios has an immediate impact on views toward assessment. Portfolios are time-consuming, but can provide effective feedback to the learner. (SLD)

Portfolio Assessment: A Handbook for Educators. Assessment Bookshelf Series.

ERIC Educational Resources Information Center

Barton, James, Ed.; Collins, Angelo, Ed.

This guide contains practical steps for integrating portfolios into any K-12 classroom and tips for effective classroom management of portfolios. It also contains actual examples of portfolios in action in a variety of subject areas. The chapters are: (1) "Starting Out: Designing Your Portfolio" (James Barton and Angelo Collins); (2) "Preparing…

Portfolio Assessment Handbook. 1990-91.

ERIC Educational Resources Information Center

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…

Professionalism, Portfolios and the Development of School Leaders.

ERIC Educational Resources Information Center

Wildy, Helen; Wallace, John

1998-01-01

Describes how two reforms--portfolio culture and teacher professionalism--converge in a systemwide program for school leaders' professional development. Investigates use of portfolios to help (Australian) principals, deputy principals, and department heads improve their performance and accountability. Participants used portfolios as evidence of…

Best evidence on the educational effects of undergraduate portfolios.

PubMed

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.

17 CFR 240.3b-15 - Definition of ancillary portfolio management securities activities.

Code of Federal Regulations, 2010 CFR

2010-04-01

... governing body of the dealer and included in the internal risk management control system for the dealer... of incidental trading activities for portfolio management purposes; and (3) Are limited to risk... portfolio management securities activities. 240.3b-15 Section 240.3b-15 Commodity and Securities Exchanges...

Deformed exponentials and portfolio selection

NASA Astrophysics Data System (ADS)

Rodrigues, Ana Flávia P.; Guerreiro, Igor M.; Cavalcante, Charles Casimiro

In this paper, we present a method for portfolio selection based on the consideration on deformed exponentials in order to generalize the methods based on the gaussianity of the returns in portfolio, such as the Markowitz model. The proposed method generalizes the idea of optimizing mean-variance and mean-divergence models and allows a more accurate behavior for situations where heavy-tails distributions are necessary to describe the returns in a given time instant, such as those observed in economic crises. Numerical results show the proposed method outperforms the Markowitz portfolio for the cumulated returns with a good convergence rate of the weights for the assets which are searched by means of a natural gradient algorithm.

Mentoring portfolio use in undergraduate and postgraduate medical education.

PubMed

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.

Assessing Pre-Service Candidates' Web-Based Electronic Portfolios.

ERIC Educational Resources Information Center

Lamson, Sharon; Thomas, Kelli R.; Aldrich, Jennifer; King, Andy

This paper describes processes undertaken by Central Missouri State University's Department of Curriculum and Instruction to prepare teacher candidates to create Web-based professional portfolios, Central's expectations for content coverage within the electronic portfolios, and evaluation procedures. It also presents data on portfolio construction…

Digital Portfolios: Documenting Student Growth

ERIC Educational Resources Information Center

Cramer, Matthew

2009-01-01

The digital portfolio process at Camino Nuevo High School (CNHS) offers an essential 21st century skill to students. All students are trained in basic web design to build and maintain their digital portfolios. These skills equip them with tools they will likely use in their future endeavors in college and the professional world. Teachers at CNHS…

A Balanced Portfolio Model For Improving Health: Concept And Vermont's Experience.

PubMed

Hester, James

2018-04-01

A successful strategy for improving population health requires acting in several sectors by implementing a portfolio of interventions. The mix of interventions should be both tailored to meet the community's needs and balanced in several dimensions-for example, time frame, level of risk, and target population. One obstacle is finding sustainable financing for both the interventions and the community infrastructure needed. This article first summarizes Vermont's experience as a laboratory for health reform. It then presents a conceptual model for a community-based population health strategy, using a balanced portfolio and diversified funding approaches. The article then reviews Vermont's population health initiative, including an example of a balanced portfolio and lessons learned from the state's experience.

Portfolio as Practice: The Narratives of Emerging Teachers.

ERIC Educational Resources Information Center

Darling, L. Farr

2001-01-01

Portfolio construction is a complex social practice with intentions, rules, and standards. This definition is not typically found in teacher education literature and has implications for evaluating students' portfolios. The paper examines teacher education students' recollections of creating portfolios in one Canadian program and argues that…

Weapon System Acquisitions: Opportunities Exist to Improve the Department of Defense’s Portfolio Management

DTIC Science & Technology

2015-08-01

Acknowledgments 55 Tables Table 1: Key Elements to Include in Portfolio Reviews and How They May Help the Portfolio Manager 9 Table 2: Key...and in some cases, potentially duplicative investments. We and others have found that leading commercial companies use portfolio management—a...law have authority to organize, train, and equip their services.5 They make initial decisions regarding what to buy, how to buy it, and how much it

A VaR Algorithm for Warrants Portfolio

NASA Astrophysics Data System (ADS)

Dai, Jun; Ni, Liyun; Wang, Xiangrong; Chen, Weizhong

Based on Gamma Vega-Cornish Fish methodology, this paper propose the algorithm for calculating VaR via adjusting the quantile under the given confidence level using the four moments (e.g. mean, variance, skewness and kurtosis) of the warrants portfolio return and estimating the variance of portfolio by EWMA methodology. Meanwhile, the proposed algorithm considers the attenuation of the effect of history return on portfolio return of future days. Empirical study shows that, comparing with Gamma-Cornish Fish method and standard normal method, the VaR calculated by Gamma Vega-Cornish Fish can improve the effectiveness of forecasting the portfolio risk by virture of considering the Gamma risk and the Vega risk of the warrants. The significance test is conducted on the calculation results by employing two-tailed test developed by Kupiec. Test results show that the calculated VaRs of the warrants portfolio all pass the significance test under the significance level of 5%.

Portfolio Development in Teacher Education and Educational Leadership.

ERIC Educational Resources Information Center

Biddle, James

The Ohio Consortium for Portfolio Development was established in 1988 as an interinstitutional research effort to integrate portfolio development into teacher education. A subphase focused on portfolio use by entry year teachers in a metropolitan school system. Personnel at Wright State University, Central State University, and the University of…

The true invariant of an arbitrage free portfolio

NASA Astrophysics Data System (ADS)

Schmidt, Anatoly B.

2003-03-01

It is shown that the arbitrage free portfolio paradigm being applied to a portfolio with an arbitrary number of shares N allows for the extended solution in which the option price F depends on N. However the resulting stock hedging expense Q= MF (where M is the number of options in the portfolio) does not depend on whether N is treated as an independent variable or as a parameter. Therefore the stock hedging expense is the true invariant of the arbitrage free portfolio paradigm.

Investment portfolio management from cybernetic point of view

NASA Astrophysics Data System (ADS)

Marchev, Angel, Jr.; Marchev, Angel

2013-12-01

The theory of investment portfolios is a well defined component of financial science. While sound in principle, it faces some setbacks in its real-world implementation. In this paper the authors propose a reformulation of the investment portfolio problem as a cybernetic system where the Investor is the controlling system and the portfolio is the controlled system. Also the portfolio controlling process should be dissected in several ordered phases, so that each phase is represented as a subsystem within the structure of the controlling system Investor.

Automatic Trading Agent. RMT Based Portfolio Theory and Portfolio Selection

NASA Astrophysics Data System (ADS)

Snarska, M.; Krzych, J.

2006-11-01

Portfolio theory is a very powerful tool in the modern investment theory. It is helpful in estimating risk of an investor's portfolio, arosen from lack of information, uncertainty and incomplete knowledge of reality, which forbids a perfect prediction of future price changes. Despite of many advantages this tool is not known and not widely used among investors on Warsaw Stock Exchange. The main reason for abandoning this method is a high level of complexity and immense calculations. The aim of this paper is to introduce an automatic decision-making system, which allows a single investor to use complex methods of Modern Portfolio Theory (MPT). The key tool in MPT is an analysis of an empirical covariance matrix. This matrix, obtained from historical data, biased by such a high amount of statistical uncertainty, that it can be seen as random. By bringing into practice the ideas of Random Matrix Theory (RMT), the noise is removed or significantly reduced, so the future risk and return are better estimated and controlled. These concepts are applied to the Warsaw Stock Exchange Simulator {http://gra.onet.pl}. The result of the simulation is 18% level of gains in comparison with respective 10% loss of the Warsaw Stock Exchange main index WIG.

Understanding the multifractality in portfolio excess returns

NASA Astrophysics Data System (ADS)

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.

e-Portfolios Enhancing Students' Self-Directed Learning: A Systematic Review of Influencing Factors

ERIC Educational Resources Information Center

Beckers, Jorrick; Dolmans, Diana; Van Merriënboer, Jeroen

2016-01-01

e-Portfolios have become increasingly popular among educators as learning tools. Some research even shows that e-portfolios can be utilised to facilitate the development of skills for self-directed learning. Such skills include self-assessment of performance, formulation of learning goals, and selection of future tasks. However, it is not yet…

[Effects of Learning Activities on Application of Learning Portfolio in Nursing Management Course].

PubMed

Choi, So Eun; Kim, Eun A

2016-02-01

This study was conducted to examine effects of a learning portfolio by identifying the learning of nursing students taking a learning portfolio-utilized nursing management class. A non-equivalent control group pretest-posttest design was used. Participants were 83 senior students taking the nursing management course in one of the Departments of Nursing at 2 Universities. Experimental group (n=42) received a learning portfolio-utilized nursing management class 15 times over 15 weeks (3 hours weekly). Self-directed learning abilities, approaches to learning and learning flow of the participants were examined with self-report structured questionnaires. Data were collected between September 2 and December 16, 2014, and were analyzed using chi-square test, Fisher's exact test, independent t-test and ANCOVA with SPSS/PC version 21.0. After the intervention the experimental group showed significant increases in self-directed learning abilities, deep approaches to learning and learning flow compared to the control group. However, no significant difference was found between groups for surface approaches to learning. Learning activities using the learning portfolios could be effective in cultivating the learning competency for growth of knowledge, technology and professionalism by increasing personal concentration and organization ability of the nursing students so that they can react to the rapidly changing environment.

Portfolio on a Shoestring

NASA Astrophysics Data System (ADS)

Mitchell, S. E.; Barbier, S. B.; Krishnamurthi, A.; Lochner, J. C.

2008-06-01

Many education and outreach programs face two daunting shortages: time and money. EPO professionals are frequently challenged to develop quality efforts for a variety of audiences and settings, all on a shoestring budget. How do you create a broad and cohesive education and outreach portfolio with limited resources? In this session, we discussed several effective strategies to make the most of your assets, such as adaptation of existing programs and materials, mutually beneficial partnerships, and innovative (and inexpensive) dissemination techniques. These approaches can fill in the gaps in your portfolio, increasing the scope and impact of your EPO efforts. There are a variety of cost-effective tools and techniques that can bring your EPO endeavors to a wide range of audiences and settings. Turn your program's EPO wish list into reality through savvy leveraging of existing personnel, funding, and materials... or find a partner that can help you fill any gaps in your portfolio.

Asset Allocation and Optimal Contract for Delegated Portfolio Management

NASA Astrophysics Data System (ADS)

Liu, Jingjun; Liang, Jianfeng

This article studies the portfolio selection and the contracting problems between an individual investor and a professional portfolio manager in a discrete-time principal-agent framework. Portfolio selection and optimal contracts are obtained in closed form. The optimal contract was composed with the fixed fee, the cost, and the fraction of excess expected return. The optimal portfolio is similar to the classical two-fund separation theorem.

On the microeconomic problems studied by portfolio theory

NASA Astrophysics Data System (ADS)

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.

Portfolios with nonlinear constraints and spin glasses

NASA Astrophysics Data System (ADS)

Gábor, Adrienn; Kondor, I.

1999-12-01

In a recent paper Galluccio, Bouchaud and Potters demonstrated that a certain portfolio problem with a nonlinear constraint maps exactly onto finding the ground states of a long-range spin glass, with the concomitant nonuniqueness and instability of the optimal portfolios. Here we put forward geometric arguments that lead to qualitatively similar conclusions, without recourse to the methods of spin glass theory, and give two more examples of portfolio problems with convex nonlinear constraints.

Random matrix theory filters and currency portfolio optimisation

NASA Astrophysics Data System (ADS)

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.

A Note on Using Portfolios To Assess Learning.

ERIC Educational Resources Information Center

Fenwick, Tara J.; Parsons, Jim

1999-01-01

Explains that a portfolio is a collection of student work that reflects the course content and is assembled by the student in a folder or binder over a specified period of time. Discusses how to use portfolios, the benefits of using portfolios as assessment tools, and potential concerns teachers need to address. (CMK)

Portfolio analysis of layered security measures.

PubMed

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.

Does asymmetric correlation affect portfolio optimization?

NASA Astrophysics Data System (ADS)

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.

Class Syllabi, General Education, and ePortfolios

ERIC Educational Resources Information Center

Appling, Jeffrey; Gancar, Jessica; Hughes, Shiree; Saad, Alex

2012-01-01

A study of undergraduate student experience with class syllabi revealed several concerns for improvement in areas directly related to General Education and assessment strategies using electronic portfolios. We report several student interests and suggestions, including the need for consistent syllabi that contain information designed to promote…

Steam technology options for pre-plant and replant soil disinfestation

USDA-ARS?s Scientific Manuscript database

This paper describes a development, testing, and commercialization program including a portfolio of three propane-fueled technologies that use pure steam or aerated steam to kill soil-borne pests prior to planting high-value crops. It includes research focused on laboratory and field evaluations of...

The stability of portfolio investment in stock crashes

NASA Astrophysics Data System (ADS)

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.

Student Portfolios: A Collection of Articles.

ERIC Educational Resources Information Center

Fogarty, Robin, Ed.

More and more, schools are looking to student portfolios as a valid, reliable, and authentic form of assessment. This collection offers practical, well-researched answers to a variety of philosophical, organizational, and implementational questions surrounding portfolio assessment. Articles in the first section provide a rationale for student…

From Metacognition to Practice Cognition: The DNP e-Portfolio to Promote Integrated Learning.

PubMed

Anderson, Kelley M; DesLauriers, Patricia; Horvath, Catherine H; Slota, Margaret; Farley, Jean Nelson

2017-08-01

Educating Doctor of Nursing Practice (DNP) students for an increasingly complex health care environment requires novel applications of learning concepts and technology. A deliberate and thoughtful process is required to integrate concepts of the DNP program into practice paradigm changes to subsequently improve students' abilities to innovate solutions to complex practice problems. The authors constructed or participated in electronic portfolio development inspired by theories of metacognition and integrated learning. The objective was to develop DNP student's reflection, integration of concepts, and technological capabilities to foster the deliberative competencies related to the DNP Essentials and the foundations of the DNP program. The pedagogical process demonstrates how e-portfolios adapted into the doctoral-level curriculum for DNP students can address the Essentials and foster the development of metacognitive capabilities, which translates into practice changes. The authors suggest that this pedagogical approach has the potential to optimize reflective and deliberative competencies among DNP students. [J Nurs Educ. 2017;56(8):497-500.]. Copyright 2017, SLACK Incorporated.

Unlocking ePortfolio Practice: Teaching Beliefs

ERIC Educational Resources Information Center

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…

On the Teaching of Portfolio Theory.

ERIC Educational Resources Information Center

Biederman, Daniel K.

1992-01-01

Demonstrates how a simple portfolio problem expressed explicitly as an expected utility maximization problem can be used to instruct students in portfolio theory. Discusses risk aversion, decision making under uncertainty, and the limitations of the traditional mean variance approach. Suggests students may develop a greater appreciation of general…

Splashy Portfolios Kids Can Make Themselves.

ERIC Educational Resources Information Center

Booth, Virginia Humphreys

1994-01-01

A children's art project lets students create artistic portfolios in a Jackson Pollock style. The activity takes 60 minutes and requires posterboard, adhesive tape, spray paint, tempera paints, eyedroppers, newspapers, colored markers, and stencil letters. By inviting students to make their own portfolios, teachers are cultivating students'…

Linearly Adjustable International Portfolios

NASA Astrophysics Data System (ADS)

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.

Technology, Identity, and Community: The Role of Electronic Teaching Portfolios in Becoming a Teacher

ERIC Educational Resources Information Center

Trent, John; Shroff, Ronnie H.

2013-01-01

This article reports on an exploratory qualitative investigation of an initiative to use an electronic teaching portfolio at a teacher education institution in Hong Kong. Using in-depth interviews, this initiative is examined from the perspective of preservice teachers themselves. Interviews sought to gain an understanding of how the construction…

Developing Portfolios in Education: A Guide to Reflection, Inquiry, and Assessment [with CD-ROM

ERIC Educational Resources Information Center

Johnson, Ruth S.; Mims, J. Sabrina; Doyle-Nichols, Adelaide

2006-01-01

Within a conceptual and research framework about the usefulness of portfolios, this book suggests methods to organize the process, and provides tools that will be used not only during preparation programs but also for professional and academic advancement. Key features include: (1) Provides a conceptual framework for portfolio development: Readers…

Were Knowledge Management Abilities of University Students Enhanced after Creating Personal Blog-Based Portfolios?

ERIC Educational Resources Information Center

Chang, Chi-Cheng; Liang, Chaoyun; Tseng, Kuo-Hung; Tseng, Ju-Shih; Chen, To-Yu

2013-01-01

The effect of creating blog-based portfolios on knowledge management (KM) abilities among university students was examined in the present study. Participants included 43 students majoring in Multimedia and Game Science at a University in Taiwan. Students spent nine weeks creating their personal portfolios by using a blog. The "t"-test…

The Audiovisual Portfolio.

ERIC Educational Resources Information Center

Williams, Eugene

1979-01-01

Describes the development of an audiovisual portfolio, consisting of a student teaching notebook, slide narrative presentation, audiotapes, and a videotape-- valuable for prospective teachers in job interviews. (CMV)

Classroom-Based Measurement and Portfolio Assessment.

ERIC Educational Resources Information Center

Nolet, Victor

1992-01-01

Portfolio assessment involves collecting multiple forms of data to support inferences about student performance in skill or content areas that cannot be sampled directly by a single measure. Portfolio assessment can help to clarify and individualize instructional goals for regular and special education students as well as suggest research and…

Student Teaching Portfolios: A Tool for Promoting Reflective Practice.

ERIC Educational Resources Information Center

Borko, Hilda; Michalec, Paul; Timmons, Maria; Siddle, Jean

1997-01-01

Examines student teaching portfolios in action within preservice teacher education, describing how the University of Colorado mandated student teaching portfolios for preservice educators. A study examined whether portfolio construction would enhance student teachers' reflection on practice. Data from interviews and students' written reflections…

Portfolio Use and Practices in US Colleges and Schools of Pharmacy

PubMed Central

Turner, Paul D.; Jones, Rhonda M.; Tilleman, Jennifer A.; Coover, Kelli L.

2012-01-01

Objectives. To identify the prevalence of portfolio use in US pharmacy programs, common components of portfolios, and advantages of and limitations to using portfolios. Methods. A cross-sectional electronic survey instrument was sent to experiential coordinators at US colleges and schools of pharmacy to collect data on portfolio content, methods, training and resource requirements, and benefits and challenges of portfolio use. Results. Most colleges and schools of pharmacy (61.8%) use portfolios in experiential courses and the majority (67.1%) formally assess them, but there is wide variation regarding content and assessment. The majority of respondents used student portfolios as a formative evaluation primarily in the experiential curriculum. Conclusions. Although most colleges and schools of pharmacy have a portfolio system in place, few are using them to fulfill accreditation requirements. Colleges and schools need to carefully examine the intended purpose of their portfolio system and follow-through with implementation and maintenance of a system that meets their goals. PMID:22544963

Portfolio use and practices in US colleges and schools of pharmacy.

PubMed

Skrabal, Maryann Z; Turner, Paul D; Jones, Rhonda M; Tilleman, Jennifer A; Coover, Kelli L

2012-04-10

To identify the prevalence of portfolio use in US pharmacy programs, common components of portfolios, and advantages of and limitations to using portfolios. A cross-sectional electronic survey instrument was sent to experiential coordinators at US colleges and schools of pharmacy to collect data on portfolio content, methods, training and resource requirements, and benefits and challenges of portfolio use. Most colleges and schools of pharmacy (61.8%) use portfolios in experiential courses and the majority (67.1%) formally assess them, but there is wide variation regarding content and assessment. The majority of respondents used student portfolios as a formative evaluation primarily in the experiential curriculum. Although most colleges and schools of pharmacy have a portfolio system in place, few are using them to fulfill accreditation requirements. Colleges and schools need to carefully examine the intended purpose of their portfolio system and follow-through with implementation and maintenance of a system that meets their goals.

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

ERIC Educational Resources Information Center

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…

Twelve tips for successful e-tutoring using electronic portfolios.

PubMed

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.

E-Portfolio, a Valuable Job Search Tool for College Students

ERIC Educational Resources Information Center

Yu, Ti

2012-01-01

Purpose: The purpose of this paper is to find answers to the following questions: How do employers think about e-portfolios? Do employers really see e-portfolios as a suitable hiring tool? Which factors in students' e-portfolios attract potential employers? Can e-portfolios be successfully used by students in their search for a job?…

Portfolio as a Teaching Method: A Capstone Project to Promote Recognition of Professional Growth

ERIC Educational Resources Information Center

Wolffe, Robert; Crowe, Helja Antola; Evens, Wayne; McConnaughay, Kelly

2013-01-01

A reflective portfolio as a capstone assignment was selected to accomplish recognition by teachers completing a science, technology, mathematics, engineering master's program for elementary teachers about their professional and personal changes and to provide program evaluators additional qualitative data regarding attainment of program goals. As…

Writing Portfolios in the Classroom: Policy and Practice, Promise and Peril. Evaluating Writing through Portfolios. Final Report.

ERIC Educational Resources Information Center

Calfee, Robert C., Ed.; Perfumo, Pamela, Ed.

This book presents essays by researchers, practitioners, and policy makers who study the impact of classroom portfolios in the assessment of writing achievement by elementary and middle-grade students. Essays in the book report on a national survey of exemplary projects and presents contributions to a Portfolio Conference held at Stanford…

Portfolio optimization by using linear programing models based on genetic algorithm

NASA Astrophysics Data System (ADS)

Sukono; Hidayat, Y.; Lesmana, E.; Putra, A. S.; Napitupulu, H.; Supian, S.

2018-01-01

In this paper, we discussed the investment portfolio optimization using linear programming model based on genetic algorithms. It is assumed that the portfolio risk is measured by absolute standard deviation, and each investor has a risk tolerance on the investment portfolio. To complete the investment portfolio optimization problem, the issue is arranged into a linear programming model. Furthermore, determination of the optimum solution for linear programming is done by using a genetic algorithm. As a numerical illustration, we analyze some of the stocks traded on the capital market in Indonesia. Based on the analysis, it is shown that the portfolio optimization performed by genetic algorithm approach produces more optimal efficient portfolio, compared to the portfolio optimization performed by a linear programming algorithm approach. Therefore, genetic algorithms can be considered as an alternative on determining the investment portfolio optimization, particularly using linear programming models.

Portfolio Assessment as a Method of Enhancing Preschool Reading Development and Teacher Instruction

ERIC Educational Resources Information Center

Esliker, Regina

2010-01-01

Technological advances offer new ways and approaches to teaching and learning and have affected traditional methods of instruction and student assessment. Portfolio assessment is one way to document a student's progress over time and has been the subject of considerable research. This mixed method study explored the extent to which portfolio…

Linking Assessment to Undergraduate Student Capabilities through Portfolio Examination

ERIC Educational Resources Information Center

O'Sullivan, Anthony J.; Harris, Peter; Hughes, Chris S.; Toohey, Susan M.; Balasooriya, Chinthaka; Velan, Gary; Kumar, Rakesh K.; McNeil, H. Patrick

2012-01-01

Portfolios are an established method of assessment, although concerns do exist around their validity for capabilities such as reflection and self-direction. This article describes an e-portfolio which closely aligns learning and reflection to graduate capabilities, incorporating features that address concerns about portfolios. Students are…

Land-Use Portfolio Modeler, Version 1.0

USGS Publications Warehouse

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

Troubleshooting Portfolios

ERIC Educational Resources Information Center

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;…

The teaching portfolio as a professional development tool for anaesthetists.

PubMed

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.

A Robust Statistics Approach to Minimum Variance Portfolio Optimization

NASA Astrophysics Data System (ADS)

Yang, Liusha; Couillet, Romain; McKay, Matthew R.

2015-12-01

We study the design of portfolios under a minimum risk criterion. The performance of the optimized portfolio relies on the accuracy of the estimated covariance matrix of the portfolio asset returns. For large portfolios, the number of available market returns is often of similar order to the number of assets, so that the sample covariance matrix performs poorly as a covariance estimator. Additionally, financial market data often contain outliers which, if not correctly handled, may further corrupt the covariance estimation. We address these shortcomings by studying the performance of a hybrid covariance matrix estimator based on Tyler's robust M-estimator and on Ledoit-Wolf's shrinkage estimator while assuming samples with heavy-tailed distribution. Employing recent results from random matrix theory, we develop a consistent estimator of (a scaled version of) the realized portfolio risk, which is minimized by optimizing online the shrinkage intensity. Our portfolio optimization method is shown via simulations to outperform existing methods both for synthetic and real market data.

Using E-Portfolios and ESL Learners

ERIC Educational Resources Information Center

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…

Optimization of the bank's operating portfolio

NASA Astrophysics Data System (ADS)

Borodachev, S. M.; Medvedev, M. A.

2016-06-01

The theory of efficient portfolios developed by Markowitz is used to optimize the structure of the types of financial operations of a bank (bank portfolio) in order to increase the profit and reduce the risk. The focus of this paper is to check the stability of the model to errors in the original data.

Advising ePortfolios to Improve First-Generation Student Engagement in Higher Education

ERIC Educational Resources Information Center

Ambrose, G. Alex

2013-01-01

This study considers how advising ePortfolios are uniquely situated to address a current challenge in the application of educational technologies: using the right tool for the right job for the right reason at the right time. The particular problem identified for investigation lies at the intersection of two central issues: first, in the age of…

Portfolio optimization using median-variance approach

NASA Astrophysics Data System (ADS)

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.

Documenting quality improvement and patient safety efforts: the quality portfolio. A statement from the academic hospitalist taskforce.

PubMed

Taylor, Benjamin B; Parekh, Vikas; Estrada, Carlos A; Schleyer, Anneliese; Sharpe, Bradley

2014-01-01

Physicians increasingly investigate, work, and teach to improve the quality of care and safety of care delivery. The Society of General Internal Medicine Academic Hospitalist Task Force sought to develop a practical tool, the quality portfolio, to systematically document quality and safety achievements. The quality portfolio was vetted with internal and external stakeholders including national leaders in academic medicine. The portfolio was refined for implementation to include an outlined framework, detailed instructions for use and an example to guide users. The portfolio has eight categories including: (1) a faculty narrative, (2) leadership and administrative activities, (3) project activities, (4) education and curricula, (5) research and scholarship, (6) honors, awards, and recognition, (7) training and certification, and (8) an appendix. The authors offer this comprehensive, yet practical tool as a method to document quality and safety activities. It is relevant for physicians across disciplines and institutions and may be useful as a standalone document or as an adjunct to traditional promotion documents. As the Next Accreditation System is implemented, academic medical centers will require faculty who can teach and implement the systems-based practice requirements. The quality portfolio is a method to document quality improvement and safety activities.

e-Portfolios in Music Teacher Education

ERIC Educational Resources Information Center

Lind, Vicki

2007-01-01

In this article Vicki Lind reports the findings of a case study investigation of the use of electronic portfolios in a music education program. The project focused specifically on the use of electronic portfolios as a tool to document the work of preservice teachers as they prepared for the teaching profession. Two research questions framed this…

The surgical learning and instructional portfolio: what residents at a single institution are learning.

PubMed

Webb, Travis P; Merkley, Taylor R

2011-03-01

The Accreditation Council for Graduate Medical Education (ACGME) Learning Portfolio is recommended as a tool to develop and document reflective, practice-based learning and improvement. There is no consensus regarding the appropriate content of a learning portfolio in medical education. Studying lessons selected for inclusion in their learning portfolios by surgical trainees could help identify useful subject matter for this purpose. Each month, all residents in our surgery residency program submit entries into their individual Surgical Learning and Instructional Portfolio (SLIP). The SLIP entries from July 2008 to 2009 (n = 420) were deidentified and randomized using a random number generator. We conducted a thematic content analysis of 50 random portfolio entries to identify lessons learned. Two independent raters analyzed the "3 lessons learned" portion of the portfolio entries and identified themes and subthemes using the constant comparative method used in grounded theory. The collaborative coding process resulted in theme saturation after the identification of 7 themes and their subthemes. Themes in decreasing order of frequency included complications, disease epidemiology, disease presentation, surgical management of disease, medical management of disease, operative techniques, and pathophysiology. Junior residents chose to focus on a broad array of foundational topics including disease presentation, epidemiology, and overall management of diseases, whereas postgraduate year-4 (PGY-4) and PGY-5 residents most frequently chose to focus on complications as learning points. Lessons learned reflect perceived needs of the trainees based on training year. When given a template to follow, junior and senior residents choose to reflect on different subject matter to meet their learning goals.

Helping Students to Prepare a Technical Communications Portfolio.

ERIC Educational Resources Information Center

Ware, Elaine

1988-01-01

Stresses the importance of teaching prospective technical writers to develop, organize, and present a technical communications portfolio. Provides a checklist on portfolio construction for students. (ARH)

Portfolios as Evidence of Reflective Practice: What Remains "Untold"

ERIC Educational Resources Information Center

Orland-Barak, Lily

2005-01-01

Addressing recent calls for investigating the specific quality of reflection associated with the uses of portfolios in teacher education, this paper describes and interprets the "practice of portfolio construction" as revealed in the construction and presentation of two kinds of portfolio in two in-service courses for mentors of teachers…

Between Public and Private: Politics, Governance, and the New Portfolio Models for Urban School Reform

ERIC Educational Resources Information Center

Bulkley, Katrina E., Ed.; Henig, Jeffrey R., Ed.; Levin, Henry M., Ed.

2010-01-01

"Between Public and Private" examines an innovative approach to school district management that has been adopted by a number of urban districts in recent years: a portfolio management model, in which "a central office oversees a portfolio of schools offering diverse organizational and curricular themes, including traditional public…

Students' Perspectives on E-Portfolio Development and Implementation: A Case Study in Taiwanese Higher Education

ERIC Educational Resources Information Center

Hsieh, Pei-Hsuan; Lee, Chun-I; Chen, Wei-Fan

2015-01-01

This study explores students' perceptions related to the implementation of e-portfolios in the context of Taiwanese higher education. Thirty Taiwanese university students were interviewed, and data analysis includes 14 interviewees' e-portfolios and responses to 281 valid surveys from non-interviewed students. The study presents students'…

Implementation of Portfolio Assessment in a Competency-based Dental Hygiene Program.

ERIC Educational Resources Information Center

Gadbury-Amyot, Cynthia C.; Holt, Lorie P.; Overman, Pamela R.; Schmidt, Colleen R.

2000-01-01

Describes the implementation of a portfolio assessment program in the dental hygiene program at the University of Missouri School of Dentistry. Tables provide examples of program competencies and related portfolio entries, the complete scoring rubric for portfolios, and the student portfolio evaluation survey. Concludes that although portfolio…

Asset Attribution Stability and Portfolio Construction: An Educational Example

ERIC Educational Resources Information Center

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…

2014 Annual Report, Geothermal Technologies Office

DOE Office of Scientific and Technical Information (OSTI.GOV)

none,

2015-03-01

In 2014, the Geothermal Technologies Office (GTO) made significant gains—increased budgets, new projects, key technology successes, and new staff. The Fiscal Year (FY) 2015 budget is at $55 million—roughly a 20% increase over FY 2014, and a strong vote of confidence in what the sector is doing to advance economically competitive renewable energy. GTO also remains committed to a balanced portfolio, which includes new hydrothermal development, EGS, and targeted opportunities in the low-temperature sector.

Physics Portfolios

ERIC Educational Resources Information Center

Whitworth, Brooke A.; Bell, Randy L.

2013-01-01

Traditionally, teachers assess students' physics understanding through lab activities, responses to open-ended word problems, and tests. But there is another way to measure student understanding, one in which students apply their learning to the world around them. This article shows how to implement student portfolios, which allow students to…

The implementation of portfolio assessment by the educators on the mathematics learning process in senior high school

NASA Astrophysics Data System (ADS)

Lestariani, Ida; Sujadi, Imam; Pramudya, Ikrar

2018-05-01

Portfolio assessment can shows the development of the ability of learners in a period through the work so that can be seen progress monitored learning of each learner. The purpose of research to describe and know the implementation of portfolio assessment on the mathematics learning process with the Senior High school math teacher class X as the subject because of the importance of applying the assessment for the progress of learning outcomes of learners. This research includes descriptive qualitative research type. Techniques of data collecting is done by observation method, interview and documentation. Data collection then validated using triangulation technique that is observation technique, interview and documentation. Data analysis technique is done by data reduction, data presentation and conclusion. The results showed that the steps taken by teachers in applying portfolio assessment obtained focused on learning outcomes. Student learning outcomes include homework and daily tests. Based on the results of research can be concluded that the implementation of portfolio assessment is the form of learning results are scored. Teachers have not yet implemented other portfolio assessment techniques such as student work.

Contract portfolio optimization for a gasoline supply chain

NASA Astrophysics Data System (ADS)

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

An Empirical Framework for ePortfolio Assessment

ERIC Educational Resources Information Center

Kelly-Riley, Diane; Elliot, Norbert; Rudniy, Alex

2016-01-01

This research focuses on ePortfolio assessment strategies that yield important accountability and reporting information. Under foundational categories of reliability, validity, and fairness, we present methods of gathering evidence from ePortfolio scores and their relationship to demographic information (gender, race/ethnicity, and socio-economic…

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

ERIC Educational Resources Information Center

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…

"I'm Just Not That Comfortable with Technology": Student Perceptions of and Preferences for Web 2.0 Technologies in Reflective Journals

ERIC Educational Resources Information Center

O'Connell, Timothy S.; Dyment, Janet E.

2016-01-01

Encouraging reflective practice and developing reflective practitioners is a goal of many disciplines in higher education. A variety of pedagogical techniques have been used to promote critical reflection including portfolios, narratives and reflective journals. Over the past decade, the use of Web 2.0 technologies with students has been…

The Bottomless File Box: Electronic Portfolios for Learning and Evaluation Purposes

ERIC Educational Resources Information Center

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…

Strategic Technology Investment Analysis: An Integrated System Approach

NASA Technical Reports Server (NTRS)

Adumitroaie, V.; Weisbin, C. R.

2010-01-01

Complex technology investment decisions within NASA are increasingly difficult to make such that the end results are satisfying the technical objectives and all the organizational constraints. Due to a restricted science budget environment and numerous required technology developments, the investment decisions need to take into account not only the functional impact on the program goals, but also development uncertainties and cost variations along with maintaining a healthy workforce. This paper describes an approach for optimizing and qualifying technology investment portfolios from the perspective of an integrated system model. The methodology encompasses multi-attribute decision theory elements and sensitivity analysis. The evaluation of the degree of robustness of the recommended portfolio provides the decision-maker with an array of viable selection alternatives, which take into account input uncertainties and possibly satisfy nontechnical constraints. The methodology is presented in the context of assessing capability development portfolios for NASA technology programs.

The CanMEDS portfolio: a tool for reflection in a fellowship programme.

PubMed

Berger, Elizabeth; Shouldice, Michelle; Kuper, Ayelet; Albert, Mathieu

2011-09-01

We developed a portfolio framed by the CanMEDS roles for use in a paediatric fellowship programme. The portfolio includes four components: a record of participation and achievement; career goals and professional development; physical evidence; and reflective writing. Once the portfolio was in use for 6 months, we studied how fellows and faculty members were using the portfolio, and what they found to be its advantages and disadvantages. Fellows reported that it kept them organised and assisted them in setting their goals. They appreciated having a central place to record their accomplishments, as this allowed them to keep a thorough curriculum vitae. The portfolio was helpful in giving them the opportunity to honestly reflect on their achievements and setbacks, and, after reviewing this in their own minds, they were in a strong position to set an agenda for their meetings with supervisors. Both the fellows and supervisors were in agreement that the portfolio led to improved discussions at their meetings. Both groups also reported that this new tool was useful in furthering the career development of trainees, which was one of the main goals in its inception. Faculty supervisors also had a stronger sense of the fellows' work, and also of any gaps in training, as a result of using this tool. We hope that this reflection tool will be adapted for use in other training programmes. If it is introduced elsewhere, we would recommend that learners and staff receive ample training in its use so that it can be maximally effective. © Blackwell Publishing Ltd 2011.

E-Portfolio Web-based for Students’ Internship Program Activities

NASA Astrophysics Data System (ADS)

Juhana, A.; Abdullah, A. G.; Somantri, M.; Aryadi, S.; Zakaria, D.; Amelia, N.; Arasid, W.

2018-02-01

Internship program is an important part in vocational education process to improve the quality of competent graduates. The complete work documentation process in electronic portfolio (e-Portfolio) platform will facilitate students in reporting the results of their work to both university and industry supervisor. The purpose of this research is to create a more easily accessed e-Portfolio which is appropriate for students and supervisors’ need in documenting their work and monitoring process. The method used in this research is fundamental research. This research is focused on the implementation of internship e-Portfolio features by demonstrating them to students who have conducted internship program. The result of this research is to create a proper web-based e-Portfolio which can be used to facilitate students in documenting the results of their work and aid supervisors in monitoring process during internship.

The Surgical Learning and Instructional Portfolio: What Residents at a Single Institution Are Learning

PubMed Central

Webb, Travis P; Merkley, Taylor R

2011-01-01

Background The Accreditation Council for Graduate Medical Education (ACGME) Learning Portfolio is recommended as a tool to develop and document reflective, practice-based learning and improvement. There is no consensus regarding the appropriate content of a learning portfolio in medical education. Studying lessons selected for inclusion in their learning portfolios by surgical trainees could help identify useful subject matter for this purpose. Methods Each month, all residents in our surgery residency program submit entries into their individual Surgical Learning and Instructional Portfolio (SLIP). The SLIP entries from July 2008 to 2009 (n = 420) were deidentified and randomized using a random number generator. We conducted a thematic content analysis of 50 random portfolio entries to identify lessons learned. Two independent raters analyzed the “3 lessons learned” portion of the portfolio entries and identified themes and subthemes using the constant comparative method used in grounded theory. Results The collaborative coding process resulted in theme saturation after the identification of 7 themes and their subthemes. Themes in decreasing order of frequency included complications, disease epidemiology, disease presentation, surgical management of disease, medical management of disease, operative techniques, and pathophysiology. Junior residents chose to focus on a broad array of foundational topics including disease presentation, epidemiology, and overall management of diseases, whereas postgraduate year-4 (PGY-4) and PGY-5 residents most frequently chose to focus on complications as learning points. Conclusions Lessons learned reflect perceived needs of the trainees based on training year. When given a template to follow, junior and senior residents choose to reflect on different subject matter to meet their learning goals. PMID:22379531

Multi-objective possibilistic model for portfolio selection with transaction cost

NASA Astrophysics Data System (ADS)

Jana, P.; Roy, T. K.; Mazumder, S. K.

2009-06-01

In this paper, we introduce the possibilistic mean value and variance of continuous distribution, rather than probability distributions. We propose a multi-objective Portfolio based model and added another entropy objective function to generate a well diversified asset portfolio within optimal asset allocation. For quantifying any potential return and risk, portfolio liquidity is taken into account and a multi-objective non-linear programming model for portfolio rebalancing with transaction cost is proposed. The models are illustrated with numerical examples.

E-Racing Difference in E-Space: Black Female Subjectivity and the Web-based Portfolio.

ERIC Educational Resources Information Center

Knadler, Stephen

2001-01-01

Seeks to complicate current theories of gender, technology, and composition by examining the self-representation of Black women at Spelman College in their end-of-the-semester Web-based portfolios. Examines how African-American women hold onto sets of experience, memories, and cultural signs when they present themselves online, appropriating…

Portfolios as a Tool for Attitude Change.

ERIC Educational Resources Information Center

Winzer, Margret; Altieri, Elizabeth; Larsson, Victoria

2000-01-01

A course at the University of Lethbridge (Alberta) uses student portfolios of social and cultural perspectives on disabilities to challenge rural preservice teachers' attitudes toward disabilities and the philosophy of inclusion. Elements of the portfolio are described. The particular value of this method for rural preservice teachers and the…

A Professional Practice Portfolio for Quality Learning

ERIC Educational Resources Information Center

Jones, Elizabeth

2010-01-01

This article focuses on the extent to which a portfolio may address the challenges of assessment for quality learning in professional education programmes. A four-year action research study investigated the development and implementation of a portfolio for the assessment of practice in a professional development programme preparing special…

Selling an Energy Efficiency Loan Portfolio in Oregon: Resale of the Craft3 loan portfolio to Self-Help Credit Union

DOE Office of Scientific and Technical Information (OSTI.GOV)

Thompson, Peter; Borgeson, Merrian; Kramer, Chris

Under the Clean Energy Works (CEW) program, Craft3 developed a loan product that widened access to financing for homeowners, offered long term funding, and collected repayments through the customer?s utility bill. The program?s success led Craft3 to pursue the sale of the loan portfolio to both mitigate its own risks and replenish funds for lending. This sale breaks new ground for energy efficiency finance and is notable as it was completed even with many novel program design elements. It replenished Craft3?s program capital and uncovered some valuable lessons that may facilitate future transactions. However, the lack of data history andmore » the unproven nature of the loan portfolio meant that Craft3 had to limit the risk of losses to Self-Help, the purchaser of the portfolio. It remains to be seen whether this experience will pave the way for more sales of on-bill energy efficiency loan portfolios. This case study illustrates how certain program design decisions can sometimes both facilitate programmatic objectives and possibly present challenges for the sale of a portfolio of energy efficiency loans.« less

Electronic Portfolios.

ERIC Educational Resources Information Center

Purves, Alan C.

1996-01-01

Outlines three forms of electronic portfolio based on a student's work, a class project about a specific topic, and a class seminar on a broad topic. Discusses logistical problems of management, access, and cross-referencing; technical problems of input, access, and copying; and theoretical issues of the lack of realia, of ownership and copyright,…

On long-only information-based portfolio diversification framework

NASA Astrophysics Data System (ADS)

Santos, Raphael A.; Takada, Hellinton H.

2014-12-01

Using the concepts from information theory, it is possible to improve the traditional frameworks for long-only asset allocation. In modern portfolio theory, the investor has two basic procedures: the choice of a portfolio that maximizes its risk-adjusted excess return or the mixed allocation between the maximum Sharpe portfolio and the risk-free asset. In the literature, the first procedure was already addressed using information theory. One contribution of this paper is the consideration of the second procedure in the information theory context. The performance of these approaches was compared with three traditional asset allocation methodologies: the Markowitz's mean-variance, the resampled mean-variance and the equally weighted portfolio. Using simulated and real data, the information theory-based methodologies were verified to be more robust when dealing with the estimation errors.

U.S. Climate Change Technology Program: Strategic Plan

DTIC Science & Technology

2006-09-01

and Long Term, provides details on the 85 technologies in the R&D portfolio. 21 (Figure 2-1) Continuing Process The United States, in partnership with...locations may be centered near or in residential locations, and work processes and products may be more commonly communicated or delivered via digital... chemical properties, along with advanced methods to simulate processes , will stem from advances in computational technology. Current Portfolio The current

Career Portfolios. Practice Application Brief No. 13.

ERIC Educational Resources Information Center

Wonacott, Michael E.

Career portfolios contain evidence of individuals' knowledge and skills and are useful tools in job search and career change, especially now that employers want generalizable workplace skills not well portrayed by traditional means and students are often inept at communicating their skills and knowledge to employers. Career portfolios contain and…

The Use of Portfolios in Leadership Education

ERIC Educational Resources Information Center

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…

ePortfolios Reveal an Emerging Community of Underrepresented Minority Scholars

ERIC Educational Resources Information Center

Singer-Freeman, Karen; Bastone, Linda; Skrivanek, Joseph

2014-01-01

We used ePortfolios to promote and assess identity change in a summer research program for 81 underrepresented minority community college students. We hypothesized that ePortfolios would increase students' development of academic identity, future orientation, and scholarly community. Students completed weekly ePortfolio journal entries and…

An application of almost marginal conditional stochastic dominance (AMCSD) on forming efficient portfolios

NASA Astrophysics Data System (ADS)

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.

Development of a Portfolio Management Approach with Case Study of the NASA Airspace Systems Program

NASA Technical Reports Server (NTRS)

Neitzke, Kurt W.; Hartman, Christopher L.

2012-01-01

A portfolio management approach was developed for the National Aeronautics and Space Administration s (NASA s) Airspace Systems Program (ASP). The purpose was to help inform ASP leadership regarding future investment decisions related to its existing portfolio of advanced technology concepts and capabilities (C/Cs) currently under development and to potentially identify new opportunities. The portfolio management approach is general in form and is extensible to other advanced technology development programs. It focuses on individual C/Cs and consists of three parts: 1) concept of operations (con-ops) development, 2) safety impact assessment, and 3) benefit-cost-risk (B-C-R) assessment. The first two parts are recommendations to ASP leaders and will be discussed only briefly, while the B-C-R part relates to the development of an assessment capability and will be discussed in greater detail. The B-C-R assessment capability enables estimation of the relative value of each C/C as compared with all other C/Cs in the ASP portfolio. Value is expressed in terms of a composite weighted utility function (WUF) rating, based on estimated benefits, costs, and risks. Benefit utility is estimated relative to achieving key NAS performance objectives, which are outlined in the ASP Strategic Plan.1 Risk utility focuses on C/C development and implementation risk, while cost utility focuses on the development and implementation portions of overall C/C life-cycle costs. Initial composite ratings of the ASP C/Cs were successfully generated; however, the limited availability of B-C-R information, which is used as inputs to the WUF model, reduced the meaningfulness of these initial investment ratings. Development of this approach, however, defined specific information-generation requirements for ASP C/C developers that will increase the meaningfulness of future B-C-R ratings.

Myopia management: multihospital portfolio planning.

PubMed

Irish, G G

1987-10-01

The acquisition and divestiture of organizational business units demonstrate management's strategy in response to an evolving marketplace. From a strategic perspective, the most significant danger to a corporation is not having the "right" portfolio of businesses or products to respond to the marketplace. This article describes a conceptual model that a multihospital system executive might use to determine the growth and diversification of the organization's portfolio of businesses. The model involves the application of market, financial, and microeconomic theories in a logical sequence to assist management in making business acquisition and divestiture decisions.

Highly Structured ePortfolio Platform for Bachelor of Nursing Students: Lessons Learned in Implementation

ERIC Educational Resources Information Center

Collins, Emma; O'Brien, Ray

2018-01-01

In 2015, the School of Nursing at Otago Polytechnic, a tertiary institution in Dunedin, New Zealand commenced using an ePortfolio platform with students in the Bachelor of Nursing program. A project was undertaken to evaluate the implementation of this technology and determine its ongoing use. This sequential, exploratory, mixed-methods research…

Technology Opportunities to Reduce U.S. Greenhouse Gas Emissions

DOE Office of Scientific and Technical Information (OSTI.GOV)

Pena, Federico

1997-10-01

This report serves as the technology basis of a needed national climate change technology strategy, with the confidence that a strong technology R&D program will deliver a portfolio of technologies with the potential to provide very substantial greenhouse gas emission reductions along with continued economic growth. Much more is needed to define such a strategy, including identification of complementary deployment policies and analysis to support the seeping and prioritization of R&D programs. A national strategy must be based upon governmental, industrial, and academic partnerships.

Using Continuing Professional Development with Portfolio in a Pharmaceutics Course.

PubMed

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.

Career Portfolios: Helping Beginning Teachers Help Themselves.

ERIC Educational Resources Information Center

Follo, Eric

Career portfolios can help beginning teachers land their first job and facilitate a teacher's professional growth as they develop in their career. A portfolio in this context is a collection of print, pictorial, and audio and video data that documents the candidate's experiences and training. Early in training, prospective teachers should decide…

Capstone Portfolios and Geography Student Learning Outcomes

ERIC Educational Resources Information Center

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…

2010-11 Research Portfolio: Research & Development Division

ERIC Educational Resources Information Center

Educational Testing Service, 2010

2010-01-01

This document describes the breadth of the research that the ETS (Educational Testing Service) Research & Development division is conducting in 2010. This portfolio will be updated in early 2011 to reflect changes to existing projects and new projects that were added after this document was completed. The research described in this portfolio falls…

Positioning ePortfolios in an Integrated Curriculum

ERIC Educational Resources Information Center

Housego, Simon; Parker, Nicola

2009-01-01

Purpose: The purpose of this paper is to discuss the potential and the challenges of successful integration of ePortfolios and graduate attributes into the curriculum. Design/methodology/approach: An argument is presented about the positioning of ePortfolios, and their links to graduate attributes, that draws upon the experiences of working with…

Employers' Perceptions of the Benefits of Employment Electronic Portfolios

ERIC Educational Resources Information Center

Leahy, Ronda L.; Filiatrault, Ariana

2017-01-01

The purpose of this study was to examine employers' perceptions of the effectiveness of employment electronic portfolios (ePortfolios) when evaluating potential job candidates. For the purpose of this study, ePortfolios were defined as a collection of electronic files that demonstrates one's qualifications, abilities, and experiences that are…

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

ERIC Educational Resources Information Center

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…

How many genomics targets can a portfolio afford?

PubMed

Betz, Ulrich A K

2005-08-01

The pharmaceutical industry can look back at a history of successful innovations. Although genomics technologies have provided drug discovery pipelines with a plethora of new potential drug targets, solid target validation is crucial to avoiding high attrition rates. Biomarkers for patient stratification and approaches for personalized medicine will further help to reduce the risk associated with new targets. To achieve an overall risk balance, portfolios have to be supplemented with precedented targets, me-too approaches and line extensions of existing drugs. However, capitalizing on genomics investments and working on unprecedented targets is essential for a continuous stream of innovative drugs.

Enterprise Systems Value-Based R&D Portfolio Analytics: Methods, Processes, and Tools

DTIC Science & Technology

2014-01-14

Enterprise Systems Value-Based R&D Portfolio Analytics: Methods, Processes, and Tools Final Technical Report SERC -2014-TR-041-1 January 14...by the U.S. Department of Defense through the Systems Engineering Research Center ( SERC ) under Contract H98230-08-D-0171 (Task Order 0026, RT 51... SERC is a federally funded University Affiliated Research Center managed by Stevens Institute of Technology Any opinions, findings and

Reflective Essay and E-Portfolio to Promote and Assess Student Learning in a Capstone Marketing Course

ERIC Educational Resources Information Center

Mummalaneni, Venkatapparao

2014-01-01

Schools of business are increasingly focused on efforts aimed at measuring, documenting, and improving student learning. E-portfolios have been introduced by a number of schools for purposes of assessment to meet the mandates of the Association to Advance Collegiate Schools of Business or similar accreditation agencies. E-portfolio, including a…

Are Integrated Portfolio Systems the Answer? An Evaluation of a Web-Based Portfolio System to Improve Preservice Teachers' Reflective Thinking Skills

ERIC Educational Resources Information Center

Oner, Diler; Adadan, Emine

2016-01-01

This study investigated the effectiveness of an integrated web-based portfolio system, namely the BOUNCE System, which primarily focuses on improving preservice teachers' reflective thinking skills. BOUNCE©, the software component of the system, was designed and developed to support a teaching practice model including a cycle of activities to be…

Improving IT Portfolio Management Decision Confidence Using Multi-Criteria Decision Making and Hypervariate Display Techniques

ERIC Educational Resources Information Center

Landmesser, John Andrew

2014-01-01

Information technology (IT) investment decision makers are required to process large volumes of complex data. An existing body of knowledge relevant to IT portfolio management (PfM), decision analysis, visual comprehension of large volumes of information, and IT investment decision making suggest Multi-Criteria Decision Making (MCDM) and…

76 FR 35026 - Hutchinson Technology, Inc., Including On-Site Workers Leased From Doherty, Including Workers...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-06-15

... Technology, Inc., Including On-Site Workers Leased From Doherty, Including Workers Whose Unemployment... Technology, Inc., Including On-Site Workers Leased From Doherty, Including Workers Whose Unemployment..., Minnesota locations of the subject firm had their wages reported under a separate unemployment insurance (UI...

The returns and risks of investment portfolio in a financial market

NASA Astrophysics Data System (ADS)

Li, Jiang-Cheng; Mei, Dong-Cheng

2014-07-01

The returns and risks of investment portfolio in a financial system was investigated by constructing a theoretical model based on the Heston model. After the theoretical model and analysis of portfolio were calculated and analyzed, we find the following: (i) The statistical properties (i.e., the probability distribution, the variance and loss rate of equity portfolio return) between simulation results of the theoretical model and the real financial data obtained from Dow Jones Industrial Average are in good agreement; (ii) The maximum dispersion of the investment portfolio is associated with the maximum stability of the equity portfolio return and minimal investment risks; (iii) An increase of the investment period and a worst investment period are associated with a decrease of stability of the equity portfolio return and a maximum investment risk, respectively.

[Portfolio in nursing school: myth or reality].

PubMed

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.

Transparency in the ePortfolio Creation Process

ERIC Educational Resources Information Center

Jones, Stephanie A.; Downs, Elizabeth; Jenkins, Stephen J.

2015-01-01

This paper presents the findings of a study examining the effect of transparency on the ePortfolio creation process. The purpose of the study was to examine whether increased awareness of other students' ePortfolios through the implementation of transparency and peer review would positively affect the quality of performance of school library media…

Using ePortfolios to Encourage Responsible Feedback

ERIC Educational Resources Information Center

Morales, Lucia; Soler-Dominguez, Amparo

2015-01-01

This article aims to look at the value that ePortfolios can add to business studies, specifically in the financial field. In order to answer the question, "Do ePortfolios contribute to the development and enhancement of responsible feedback in the classroom?", the study analyzed the work done by postgraduate students pursuing a Master's…

Validity and reliability of portfolio assessment of competency in a baccalaureate dental hygiene program

NASA Astrophysics Data System (ADS)

Gadbury-Amyot, Cynthia C.

This study examined validity and reliability of portfolio assessment using Messick's (1996, 1995) unified framework of construct validity. Theoretical and empirical evidence was sought for six aspects of construct validity. The sample included twenty student portfolios. Each portfolio were evaluated by seven faculty raters using a primary trait analysis scoring rubric. There was a significant relationship (r = .81--.95; p < .01) between the seven subscales in the scoring rubric demonstrating measurement of a common construct. Item analysis was conducted to examine convergent and discriminant empirical relationships of the 35 items in the scoring rubric. There was a significant relationship between all items ( p < .01), and all but one item was more strongly correlated with its own subscale than with other subscales. However, correlations of items across subscales were predominantly moderate in strength indicating that items did not strongly discriminate between subscales. A fully crossed, two facet generalizability (G) study design was used to examine reliability. Analysis of variance demonstrated that the greatest source of variance was the scoring rubric itself, accounting for 78% of the total variance. The smallest source of variance was the interaction between portfolio and rubric (1.15%) indicating that while the seven subscales varied in difficulty level, the relative standing of individual portfolios was maintained across subscales. Faculty rater variance accounted for only 1.28% of total variance. A phi coefficient of .86, analogous to a reliability coefficient in classical test theory, was obtained in the Decision study by increasing the subscales to fourteen and decreasing faculty raters to three. There was a significant relationship between portfolios and grade point average (r = .70; p < .01), and the National Dental Hygiene Board Examination (r = .60; p < .01). The relationship between portfolios and the Central Regional Dental Testing Service

Using a Portfolio of Algorithms for Planning and Scheduling

NASA Technical Reports Server (NTRS)

Sherwood, Robert; Knight, Russell; Rabideau, Gregg; Chien, Steve; Tran, Daniel; Engelhardt, Barbara

2003-01-01

The Automated Scheduling and Planning Environment (ASPEN) software system, aspects of which have been reported in several previous NASA Tech Briefs articles, includes a subsystem that utilizes a portfolio of heuristic algorithms that work synergistically to solve problems. The nature of the synergy of the specific algorithms is that their likelihoods of success are negatively correlated: that is, when a combination of them is used to solve a problem, the probability that at least one of them will succeed is greater than the sum of probabilities of success of the individual algorithms operating independently of each other. In ASPEN, the portfolio of algorithms is used in a planning process of the iterative repair type, in which conflicts are detected and addressed one at a time until either no conflicts exist or a user-defined time limit has been exceeded. At each choice point (e.g., selection of conflict; selection of method of resolution of conflict; or choice of move, addition, or deletion) ASPEN makes a stochastic choice of a combination of algorithms from the portfolio. This approach makes it possible for the search to escape from looping and from solutions that are locally but not globally optimum.

17 CFR 270.17a-6 - Exemption for transactions with portfolio affiliates.

Code of Federal Regulations, 2010 CFR

2010-04-01

... with portfolio affiliates. 270.17a-6 Section 270.17a-6 Commodity and Securities Exchanges SECURITIES... Exemption for transactions with portfolio affiliates. (a) Exemption for transactions with portfolio affiliates. A transaction to which a fund, or a company controlled by a fund, and a portfolio affiliate of...

Estimating the Value of Utility-Scale Solar Technologies in California Under a 40% Renewable Portfolio Standard

DOE Office of Scientific and Technical Information (OSTI.GOV)

Jorgenson, J.; Denholm, P.; Mehos, M.

2014-05-01

Concentrating solar power with thermal energy storage (CSP-TES) is a unique source of solar energy in that its output can be shifted over time. The ability of CSP-TES to be a flexible source of generation may be particularly valuable in regions with high overall penetration of solar energy, such as the state of California. California's Renewable Portfolio Standard (RPS) requires the state to increase generation from eligible renewable energy resources to reach 33% of retail electricity sales by 2020. Beyond 2020, California targets a further reduction in greenhouse gas emissions. To help reach this goal, current California governor Jerry Brownmore » has stated that a higher 40% RPS might be reachable in the near term. The levelized cost of energy is generally emphasized when assessing the economic viability of renewable energy systems implemented to achieve the RPS. However, the operational and capacity benefits of such systems are often ignored, which can lead to incorrect economic comparisons between CSP-TES and variable renewable generation technologies such as solar photovoltaics (PV). Here we evaluate a 40% RPS scenario in a California grid model with PV or CSP-TES providing the last 1% of RPS energy. We compare the technical and economic implications of integrating either solar technology under several sensitivities, finding that the ability to displace new conventional thermal generation capacity may be the largest source of value of CSP-TES compared to PV at high solar penetrations.« less

A Drop in the Bucket or a Pebble in a Pond: Commercial Building Partners’ Replication of EEMs Across Their Portfolios

DOE Office of Scientific and Technical Information (OSTI.GOV)

Antonopoulos, Chrissi A.; Baechler, Michael C.; Dillon, Heather E.

This study presents findings from questionnaire and interview data investigating replication efforts of Commercial Building Partnership (CBP) partners that worked directly with the Pacific Northwest National Laboratory (PNNL). PNNL partnered with 12 organizations on new and retrofit construction projects as part of the U.S. Department of Energy (DOE) CBP program. PNNL and other national laboratories collaborate with industry leaders that own large portfolios of buildings to develop high performance projects for new construction and renovation. This project accelerates market adoption of commercially available energy saving technologies into the design process for new and upgraded commercial buildings. The labs provide assistancemore » to the partners’ design teams and make a business case for energy investments. From the owner’s perspective, a sound investment results in energy savings based on corporate objectives and design. Through a feedback questionnaire, along with personal interviews, PNNL gathered qualitative and quantitative information relating to replication efforts by each organization. Data through this process were analyzed to provide insight into two primary research areas: 1) CBP partners’ replication efforts of technologies and approaches used in the CBP project to the rest of the organization’s building portfolio (including replication verification), and, 2) the market potential for technology diffusion into the total U.S. commercial building stock, as a direct result of the CBP entire program.« less

Implementing Curriculum-Based Learning Portfolio: A Case Study in Taiwan

ERIC Educational Resources Information Center

Chen, Shu-Chin Susan; Cheng, Yu-Pay

2011-01-01

The main purpose of this descriptive research is to examine and document the development of a curriculum-based learning portfolio model for children in a preschool for three-six-year-olds in Taiwan. Data collection methods adopted include classroom observation, in-depth interviews, questionnaires and documentation. Participants include a preschool…

Electronic Portfolios in the Classroom: Factors Impacting Teachers' Integration of New Technologies and New Pedagogies

ERIC Educational Resources Information Center

Meyer, E. J.; Abrami, P. C.; Wade, A.; Scherzer, R.

2011-01-01

This article presents the findings of a study on the use of an electronic portfolio (EP) in 16 elementary classrooms across Canada. Using a mixed-methods approach, data were collected to understand how teachers used EPs in their classrooms, to what extent they integrated the EP into their practice, and the factors influencing their use. Using…

Will We All Be Portfolio Workers? Trends and Issues Alerts.

ERIC Educational Resources Information Center

Kerka, Sandra

The world of stable, long-term employment is coming to an end. Part-time, contingent, and contract workers now account for more than 35% of the U.S. work force. It has been suggested that individuals will become "portfolio workers" with "portfolio careers." Individuals will maintain portfolios of their skills, abilities, and achievements and will…

Development of an Electronic Portfolio System Success Model: An Information Systems Approach

ERIC Educational Resources Information Center

Balaban, Igor; Mu, Enrique; Divjak, Blazenka

2013-01-01

This research has two main goals: to develop an instrument for assessing Electronic Portfolio (ePortfolio) success and to build a corresponding ePortfolio success model using DeLone and McLean's information systems success model as the theoretical framework. For this purpose, we developed an ePortfolio success measurement instrument and structural…

Portfolios and the market geometry

NASA Astrophysics Data System (ADS)

Eleutério, Samuel; Araújo, Tanya; Vilela Mendes, R.

2014-09-01

A geometric analysis of return time series, performed in the past, implied that most of the systematic information in the market is contained in a space of small dimension. Here we have explored subspaces of this space to find out the relative performance of portfolios formed from companies that have the largest projections in each one of the subspaces. As expected, it was found that the best performance portfolios are associated with some of the small eigenvalue subspaces and not to the dominant dimensions. This is found to occur in a systematic fashion over an extended period (1990-2008).

13 CFR 307.19 - RLF loan portfolio Sales and Securitizations.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false RLF loan portfolio Sales and... Funds and Use of Grant Funds § 307.19 RLF loan portfolio Sales and Securitizations. EDA may take such... may enter into a Sale or a Securitization of all or a portion of its RLF loan portfolio, provided: (a...

Using Facebook-Based e-Portfolio in ESL Writing Classrooms: Impact and Challenges

ERIC Educational Resources Information Center

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…

A web-based portfolio model as the students' final assignment: Dealing with the development of higher education trend

NASA Astrophysics Data System (ADS)

Utanto, Yuli; Widhanarto, Ghanis Putra; Maretta, Yoris Adi

2017-03-01

This study aims to develop a web-based portfolio model. The model developed in this study could reveal the effectiveness of the new model in experiments conducted at research respondents in the department of curriculum and educational technology FIP Unnes. In particular, the further research objectives to be achieved through this development of research, namely: (1) Describing the process of implementing a portfolio in a web-based model; (2) Assessing the effectiveness of web-based portfolio model for the final task, especially in Web-Based Learning courses. This type of research is the development of research Borg and Gall (2008: 589) says "educational research and development (R & D) is a process used to develop and validate educational production". The series of research and development carried out starting with exploration and conceptual studies, followed by testing and evaluation, and also implementation. For the data analysis, the technique used is simple descriptive analysis, analysis of learning completeness, which then followed by prerequisite test for normality and homogeneity to do T - test. Based on the data analysis, it was concluded that: (1) a web-based portfolio model can be applied to learning process in higher education; (2) The effectiveness of web-based portfolio model with field data from the respondents of large group trial participants (field trial), the number of respondents who reached mastery learning (a score of 60 and above) were 24 people (92.3%) in which it indicates that the web-based portfolio model is effective. The conclusion of this study is that a web-based portfolio model is effective. The implications of the research development of this model, the next researcher is expected to be able to use the guideline of the development model based on the research that has already been conducted to be developed on other subjects.

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

PubMed

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.

Portfolio Peer Review: A Tool for Program Change.

ERIC Educational Resources Information Center

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…

Twelve tips for creating an academic teaching portfolio.

PubMed

Little-Wienert, Kim; Mazziotti, Mark

2018-01-01

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.

Methane mitigation timelines to inform energy technology evaluation

NASA Astrophysics Data System (ADS)

Roy, Mandira; Edwards, Morgan R.; Trancik, Jessika E.

2015-11-01

Energy technologies emitting differing proportions of methane (CH4) and carbon dioxide (CO2) vary significantly in their relative climate impacts over time, due to the distinct atmospheric lifetimes and radiative efficiencies of the two gases. Standard technology comparisons using the global warming potential (GWP) with a fixed time horizon do not account for the timing of emissions in relation to climate policy goals. Here we develop a portfolio optimization model that incorporates changes in technology impacts based on the temporal proximity of emissions to a radiative forcing (RF) stabilization target. An optimal portfolio, maximizing allowed energy consumption while meeting the RF target, is obtained by year-wise minimization of the marginal RF impact in an intended stabilization year. The optimal portfolio calls for using certain higher-CH4-emitting technologies prior to an optimal switching year, followed by CH4-light technologies as the stabilization year approaches. We apply the model to evaluate transportation technology pairs and find that accounting for dynamic emissions impacts, in place of using the static GWP, can result in CH4 mitigation timelines and technology transitions that allow for significantly greater energy consumption while meeting a climate policy target. The results can inform the forward-looking evaluation of energy technologies by engineers, private investors, and policy makers.

Extended Information Ratio for Portfolio Optimization Using Simulated Annealing with Constrained Neighborhood

NASA Astrophysics Data System (ADS)

Orito, Yukiko; Yamamoto, Hisashi; Tsujimura, Yasuhiro; Kambayashi, Yasushi

The portfolio optimizations are to determine the proportion-weighted combination in the portfolio in order to achieve investment targets. This optimization is one of the multi-dimensional combinatorial optimizations and it is difficult for the portfolio constructed in the past period to keep its performance in the future period. In order to keep the good performances of portfolios, we propose the extended information ratio as an objective function, using the information ratio, beta, prime beta, or correlation coefficient in this paper. We apply the simulated annealing (SA) to optimize the portfolio employing the proposed ratio. For the SA, we make the neighbor by the operation that changes the structure of the weights in the portfolio. In the numerical experiments, we show that our portfolios keep the good performances when the market trend of the future period becomes different from that of the past period.

Linear versus quadratic portfolio optimization model with transaction cost

NASA Astrophysics Data System (ADS)

Razak, Norhidayah Bt Ab; Kamil, Karmila Hanim; Elias, Siti Masitah

2014-06-01

Optimization model is introduced to become one of the decision making tools in investment. Hence, it is always a big challenge for investors to select the best model that could fulfill their goal in investment with respect to risk and return. In this paper we aims to discuss and compare the portfolio allocation and performance generated by quadratic and linear portfolio optimization models namely of Markowitz and Maximin model respectively. The application of these models has been proven to be significant and popular among others. However transaction cost has been debated as one of the important aspects that should be considered for portfolio reallocation as portfolio return could be significantly reduced when transaction cost is taken into consideration. Therefore, recognizing the importance to consider transaction cost value when calculating portfolio' return, we formulate this paper by using data from Shariah compliant securities listed in Bursa Malaysia. It is expected that, results from this paper will effectively justify the advantage of one model to another and shed some lights in quest to find the best decision making tools in investment for individual investors.

An unbalanced portfolio.

PubMed

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.

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

NASA Technical Reports Server (NTRS)

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

2001-01-01

Portfolio methods support the combination of different algorithms and heuristics, including stochastic local search (SLS) heuristics, and have been identified as a promising approach to solve computationally hard problems. While successful in experiments, theoretical foundations and analytical results for portfolio-based SLS heuristics are less developed. This article aims to improve the understanding of the role of portfolios of heuristics in SLS. We emphasize the problem of computing most probable explanations (MPEs) in Bayesian networks (BNs). Algorithmically, we discuss a portfolio-based SLS algorithm for MPE computation, Stochastic Greedy Search (SGS). SGS supports the integration of different initialization operators (or initialization heuristics) and different search operators (greedy and noisy heuristics), thereby enabling new analytical and experimental results. Analytically, we introduce a novel Markov chain model tailored to portfolio-based SLS algorithms including SGS, thereby enabling us to analytically form expected hitting time results that explain empirical run time results. For a specific BN, we show the benefit of using a homogenous initialization portfolio. To further illustrate the portfolio approach, we consider novel additive search heuristics for handling determinism in the form of zero entries in conditional probability tables in BNs. Our additive approach adds rather than multiplies probabilities when computing the utility of an explanation. We motivate the additive measure by studying the dramatic impact of zero entries in conditional probability tables on the number of zero-probability explanations, which again complicates the search process. We consider the relationship between MAXSAT and MPE, and show that additive utility (or gain) is a generalization, to the probabilistic setting, of MAXSAT utility (or gain) used in the celebrated GSAT and WalkSAT algorithms and their descendants. Utilizing our Markov chain framework, we show that

DHB Task Force Review of DoD Biodefense Infrastructure and Biological Research Portfolio

DTIC Science & Technology

2009-04-29

Center and Biological Defense and Research Directorate (BORD) biodefense research portfolio includes vaccines, molecular diagnostics , genomics, and...human monoclonal antibodies, and innate immune agonists); molecular diagnostics (including recombinant reagents, assay development, reagent production

Reshaping Catholic Secondary School Curriculum through Culminating Portfolios

ERIC Educational Resources Information Center

Ryan, Mark P.

2004-01-01

This study analyzes qualitative data on student perceptions and curriculum transformation from a schoolwide culminating portfolio program of a small, urban, archdiocesan Catholic high school located on the West Coast. Over 4 years, all graduating students (n = 102) developed culminating portfolios, evidencing their accomplishment of specific…

Random Matrix Theory Approach to Indonesia Energy Portfolio Analysis

NASA Astrophysics Data System (ADS)

Mahardhika, Alifian; Purqon, Acep

2017-07-01

In a few years, Indonesia experienced difficulties in maintaining energy security, the problem is the decline in oil production from 1.6 million barrels per day to 861 thousand barrels per day in 2012. However, there is a difference condition in 2015 until the third week in 2016, world oil prices actually fell at the lowest price level since last 12 years. The decline in oil prices due to oversupply of oil by oil-producing countries of the world due to the instability of the world economy. Wave of layoffs in Indonesia is a response to the decline in oil prices, this led to the energy and mines portfolios Indonesia feared would not be more advantageous than the portfolio in other countries. In this research, portfolio analysis will be done on energy and mining in Indonesia by using stock price data of energy and mines in the period 26 November 2010 until April 1, 2016. It was found that the results have a wide effect of the market potential is high in the determination of the return on the portfolio energy and mines. Later, it was found that there are eight of the thirty stocks in the energy and mining portfolio of Indonesia which have a high probability of return relative to the average return of stocks in a portfolio of energy and mines.

Application of Post Modern Portfolio Theory to Mitigate Risk in International Shipping

DTIC Science & Technology

2011-03-24

The concept of portfolio optimization pioneered by Dr. Harry Markowitz and still used today for investment diversification is applied to the ...is currently referred to as “Post-Modern Portfolio Theory .” It begins with the foundations of portfolio optimization as created by Harry 14... Portfolio Theory ,” and is still considered to be one of the foundations of economic theory , garnering

Sandia National Laboratories: Microsystems Science & Technology Center

Science.gov Websites

Programs Nuclear Weapons About Nuclear Weapons Safety & Security Weapons Science & Technology Robotics R&D 100 Awards Laboratory Directed Research & Development Technology Deployment Centers Audit Sandia's Economic Impact Licensing & Technology Transfer Browse Technology Portfolios

Mars base technology program overview

NASA Technical Reports Server (NTRS)

Chu, Chneg-Chih; Hayati, Samad A.; Udomkesmalee, Suraphol

2005-01-01

In this paper, we present an overview of the current technology portfolio for Mars Base Technology Program. Brief descriptions of the awarded technologies and the high-priority areas in both NRAs are provided to show the current focus of MTP. We also present the approach that MTP uses to evaluate technology maturity for each of the technology tasks.

Challenges in Producing a Portfolio for Assessment: In Search of Underpinning Educational Theories

ERIC Educational Resources Information Center

Tisani, Nomathamsanqa

2008-01-01

The use of portfolios for assessment is gaining popularity in higher education. Despite acknowledged difficulties and flaws associated with this assessment method, portfolios have advantages over traditional methods. Handbooks on methods of constructing portfolios often emphasise the mechanics of the "process" of building portfolios.…

13 CFR 107.880 - Assets acquired in liquidation of Portfolio securities.

Code of Federal Regulations, 2010 CFR

2010-01-01

... Portfolio securities. 107.880 Section 107.880 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION... liquidation of Portfolio securities. You may acquire assets in full or partial liquidation of a Small Business... assets. You must dispose of assets acquired in liquidation of a Portfolio security within a reasonable...

Student Portfolios: A Process/Product Learning and Assessment Strategy.

ERIC Educational Resources Information Center

Shackelford, Ray L.

1996-01-01

Investigates how student portfolios can be used as an effective strategy for improving and communicating desired competencies and foundation skills. Describes various types of portfolios such as showcase, descriptive, evaluative, and composite. (Author/JOW)

Digital Portfolios: Powerful Marketing Tool for Communications Students

ERIC Educational Resources Information Center

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…

Complex Moving Parts: Assessment Systems and Electronic Portfolios

ERIC Educational Resources Information Center

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…

Idea Bank: Portfolios and Assessment in Music Classes

ERIC Educational Resources Information Center

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…

Online English Language Learners' Perceptions of Portfolio Assessment

ERIC Educational Resources Information Center

Baturay, Meltem Huri

2015-01-01

Portfolio assessment has been implemented in many core disciplines for quality assurance and consistent assessment of learner outcomes. For English language learning, for which varying proficiency levels of learners exist, portfolios are suggested to assess individual learners' progress. The current study was carried out in an online English…

Using the Teaching Portfolio to Anticipate Programmatic Assessment

ERIC Educational Resources Information Center

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…

An Artificial Bee Colony Algorithm for Uncertain Portfolio Selection

PubMed Central

Chen, Wei

2014-01-01

Portfolio selection is an important issue for researchers and practitioners. In this paper, under the assumption that security returns are given by experts' evaluations rather than historical data, we discuss the portfolio adjusting problem which takes transaction costs and diversification degree of portfolio into consideration. Uncertain variables are employed to describe the security returns. In the proposed mean-variance-entropy model, the uncertain mean value of the return is used to measure investment return, the uncertain variance of the return is used to measure investment risk, and the entropy is used to measure diversification degree of portfolio. In order to solve the proposed model, a modified artificial bee colony (ABC) algorithm is designed. Finally, a numerical example is given to illustrate the modelling idea and the effectiveness of the proposed algorithm. PMID:25089292

An artificial bee colony algorithm for uncertain portfolio selection.

PubMed

Chen, Wei

2014-01-01

Portfolio selection is an important issue for researchers and practitioners. In this paper, under the assumption that security returns are given by experts' evaluations rather than historical data, we discuss the portfolio adjusting problem which takes transaction costs and diversification degree of portfolio into consideration. Uncertain variables are employed to describe the security returns. In the proposed mean-variance-entropy model, the uncertain mean value of the return is used to measure investment return, the uncertain variance of the return is used to measure investment risk, and the entropy is used to measure diversification degree of portfolio. In order to solve the proposed model, a modified artificial bee colony (ABC) algorithm is designed. Finally, a numerical example is given to illustrate the modelling idea and the effectiveness of the proposed algorithm.

Report on Portfolio Companies with Operations in South Africa.

ERIC Educational Resources Information Center

Harvard Univ., Cambridge, MA.

The activities of portfolio companies in South Africa are reviewed in this report from the Advisory Committee on Shareholder Responsibility of Harvard University. A brief review of recent South African political and economic events includes a discussion of the nation's leadership, long-term social and political projections, labor policies, and the…

Portfolio Use in Educational Leadership Preparation Programs: From Theory to Practice.

ERIC Educational Resources Information Center

Barnett, Bruce G.

1995-01-01

The use of portfolios as an authentic measure of competence is discussed, particularly in educational administrator education programs. Rationale, purposes, and appropriate content for portfolios are outlined, based on the intended use. It is noted that a period of adjustment to portfolio construction and incorporation should be anticipated. (MSE)

From aggregation to interpretation: how assessors judge complex data in a competency-based portfolio.

PubMed

Oudkerk Pool, Andrea; Govaerts, Marjan J B; Jaarsma, Debbie A D C; Driessen, Erik W

2018-05-01

While portfolios are increasingly used to assess competence, the validity of such portfolio-based assessments has hitherto remained unconfirmed. The purpose of the present research is therefore to further our understanding of how assessors form judgments when interpreting the complex data included in a competency-based portfolio. Eighteen assessors appraised one of three competency-based mock portfolios while thinking aloud, before taking part in semi-structured interviews. A thematic analysis of the think-aloud protocols and interviews revealed that assessors reached judgments through a 3-phase cyclical cognitive process of acquiring, organizing, and integrating evidence. Upon conclusion of the first cycle, assessors reviewed the remaining portfolio evidence to look for confirming or disconfirming evidence. Assessors were inclined to stick to their initial judgments even when confronted with seemingly disconfirming evidence. Although assessors reached similar final (pass-fail) judgments of students' professional competence, they differed in their information-processing approaches and the reasoning behind their judgments. Differences sprung from assessors' divergent assessment beliefs, performance theories, and inferences about the student. Assessment beliefs refer to assessors' opinions about what kind of evidence gives the most valuable and trustworthy information about the student's competence, whereas assessors' performance theories concern their conceptualizations of what constitutes professional competence and competent performance. Even when using the same pieces of information, assessors furthermore differed with respect to inferences about the student as a person as well as a (future) professional. Our findings support the notion that assessors' reasoning in judgment and decision-making varies and is guided by their mental models of performance assessment, potentially impacting feedback and the credibility of decisions. Our findings also lend further

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

PubMed Central

2012-01-01

Background 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. Methods 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. Results 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

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

PubMed

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

Portfolio optimization using fuzzy linear programming

NASA Astrophysics Data System (ADS)

Pandit, Purnima K.

2013-09-01

Portfolio Optimization (PO) is a problem in Finance, in which investor tries to maximize return and minimize risk by carefully choosing different assets. Expected return and risk are the most important parameters with regard to optimal portfolios. In the simple form PO can be modeled as quadratic programming problem which can be put into equivalent linear form. PO problems with the fuzzy parameters can be solved as multi-objective fuzzy linear programming problem. In this paper we give the solution to such problems with an illustrative example.

Student Portfolios 101

ERIC Educational Resources Information Center

Lippert, Robert

2004-01-01

Student portfolios can offer great benefits to both high school and postsecondary education programs. They assist instructors in determining the progress of a student's performance and provide students with a vital self-promotion tool for job searches or the higher education application process. This brief article describes a few considerations to…

Baltimore and the Portfolio School District Strategy. Portfolio School Districts Project

ERIC Educational Resources Information Center

Yatsko, Sarah

2012-01-01

In November 2010, Baltimore's Fund for Education Excellence and the Annie E. Casey Foundation approached the Center on Reinventing Public Education (CRPE) and requested a case study of the implementation of Baltimore City Public Schools' (City Schools) portfolio strategy. These local foundations were interested in understanding how the district…

AVC/H.264 patent portfolio license

NASA Astrophysics Data System (ADS)

Horn, Lawrence A.

2005-08-01

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 Electronics and Telecommunications Research Institute (ETRI); France Telecom, societe anonyme; Fujitsu Limited; 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; and Victor Company of Japan, Limited. 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.

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

PubMed

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

Portfolio optimization for index tracking modelling in Malaysia stock market

NASA Astrophysics Data System (ADS)

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.

A method for minimum risk portfolio optimization under hybrid uncertainty

NASA Astrophysics Data System (ADS)

Egorova, Yu E.; Yazenin, A. V.

2018-03-01

In this paper, we investigate a minimum risk portfolio model under hybrid uncertainty when the profitability of financial assets is described by fuzzy random variables. According to Feng, the variance of a portfolio is defined as a crisp value. To aggregate fuzzy information the weakest (drastic) t-norm is used. We construct an equivalent stochastic problem of the minimum risk portfolio model and specify the stochastic penalty method for solving it.

Identifying Evidence of Reflective Ability in Preservice Teacher Electronic Portfolios

ERIC Educational Resources Information Center

Sulzen, James

2011-01-01

Results of this study identified "evidence markers" that characterize reflection in preservice teacher electronic portfolios. Examples of such markers include openness to self-learning, willingness to self-critique, analytical detail of reflections, and taking responsibility for pupil learning challenges. To identify the markers, school…

The Portfolio Process: Questions for Implementation and Practice

ERIC Educational Resources Information Center

Bowers, Susan P.

2005-01-01

The portfolio, a collection of a student's work over their course of study, has become a popular tool for college teaching. Portfolios have the distinct advantage of engaging the learner in reflection (Reis & Villaume, 2002; Willis & Davies, 2002) and self-assessment (Hill, 2002), while at the same time creating documentation useful for…

Can Process Portfolios Affect Students' Writing Self-Efficacy?

ERIC Educational Resources Information Center

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…

Student Attitudes towards Portfolios To Encourage Journal Reading.

ERIC Educational Resources Information Center

Ferris, Alan R.

Student attitudes towards the use of portfolios to encourage journal reading are investigated in lower division psychology classes. Portfolios can be designed in various ways to meet different educational goals. It is also useful for undergraduates to read original research articles, but difficult to motivate them to do so. The intention of this…

Evaluating the Acceptability and Effectiveness of Family Assessment Portfolios

ERIC Educational Resources Information Center

Meadan, Hedda; Thompson, James R.; Hagiwara, Mayumi; Herold, Julie; Hoekstra, Sarah; Manser, Samantha

2009-01-01

The Family Assessment Portfolio (FAP) is a new tool that includes scrapbooks, web-based profiles, and movies that families create to introduce their children to educators. FAP was developed to promote good home/school communication and collaboration. Although FAPs appear to be a promising practice for the field of special education, there is…

The Feasibility and Acceptability of Using a Portfolio to Assess Professional Competence

PubMed Central

Tuekam, Rosine

2011-01-01

ABSTRACT Purpose: Little is known about physical therapists' views on the use of portfolios to evaluate professional competence. The purpose of this study was to gather the opinions of physical therapists on the feasibility and acceptability of a portfolio prepared to demonstrate evidence of clinical specialization through reported activities and accomplishments related to professional development, leadership, and research. Methods: Twenty-nine Canadian physical therapists practising in the neurosciences area were given 8 weeks to prepare a professional portfolio. Participants submitted the portfolio along with a survey addressing the preparation of the portfolio and its role as an assessment tool. Qualitative content analysis was used to interpret the participants' comments. Results: Participants reported that maintaining organized records facilitated the preparation of their portfolio. They experienced pride when reviewing their completed portfolios, which summarized their professional activities and highlighted their achievements. Concerns were noted about the veracity of self-reported records and the ability of the documentation to provide a comprehensive view of the full scope of the professional competencies required for clinical specialization (e.g., clinical skills). Conclusion: The study's findings support the feasibility and acceptability of a portfolio review to assess professional competence and clinical specialization in physical therapy and have implications for both physical therapists and professional agencies. PMID:22210983

The feasibility and acceptability of using a portfolio to assess professional competence.

PubMed

Miller, Patricia A; Tuekam, Rosine

2011-01-01

Little is known about physical therapists' views on the use of portfolios to evaluate professional competence. The purpose of this study was to gather the opinions of physical therapists on the feasibility and acceptability of a portfolio prepared to demonstrate evidence of clinical specialization through reported activities and accomplishments related to professional development, leadership, and research. Twenty-nine Canadian physical therapists practising in the neurosciences area were given 8 weeks to prepare a professional portfolio. Participants submitted the portfolio along with a survey addressing the preparation of the portfolio and its role as an assessment tool. Qualitative content analysis was used to interpret the participants' comments. Participants reported that maintaining organized records facilitated the preparation of their portfolio. They experienced pride when reviewing their completed portfolios, which summarized their professional activities and highlighted their achievements. Concerns were noted about the veracity of self-reported records and the ability of the documentation to provide a comprehensive view of the full scope of the professional competencies required for clinical specialization (e.g., clinical skills). The study's findings support the feasibility and acceptability of a portfolio review to assess professional competence and clinical specialization in physical therapy and have implications for both physical therapists and professional agencies.

Computer Assisted Project-Based Instruction: The Effects on Science Achievement, Computer Achievement and Portfolio Assessment

ERIC Educational Resources Information Center

Erdogan, Yavuz; Dede, Dinçer

2015-01-01

The purpose of this study is to compare the effects of computer assisted project-based instruction on learners' achievement in a science and technology course, in a computer course and in portfolio development. With this aim in mind, a quasi-experimental design was used and a sample of 70 seventh grade secondary school students from Org. Esref…

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

PubMed

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.

NASA's In Space Propulsion Technology Program Accomplishments and Lessons Learned

NASA Technical Reports Server (NTRS)

Johnson, Les C.; Harris, David

2008-01-01

NASA's In-Space Propulsion Technology (ISPT) Program was managed for 5 years at the NASA MSFC and significant strides were made in the advancement of key transportation technologies that will enable or enhance future robotic science and deep space exploration missions. At the program's inception, a set of technology investment priorities were established using an NASA-wide, mission-driven prioritization process and, for the most part, these priorities changed little - thus allowing a consistent framework in which to fund and manage technology development. Technologies in the portfolio included aerocapture, advanced chemical propulsion, solar electric propulsion, solar sail propulsion, electrodynamic and momentum transfer tethers, and various very advanced propulsion technologies with significantly lower technology readiness. The program invested in technologies that have the potential to revolutionize the robotic exploration of deep space. For robotic exploration and science missions, increased efficiencies of future propulsion systems are critical to reduce overall life-cycle costs and, in some cases, enable missions previously considered impossible. Continued reliance on conventional chemical propulsion alone will not enable the robust exploration of deep space - the maximum theoretical efficiencies have almost been reached and they are insufficient to meet needs for many ambitious science missions currently being considered. By developing the capability to support mid-term robotic mission needs, the program was to lay the technological foundation for travel to nearby interstellar space. The ambitious goals of the program at its inception included supporting the development of technologies that could support all of NASA's missions, both human and robotic. As time went on and budgets were never as high as planned, the scope of the program was reduced almost every year, forcing the elimination of not only the broader goals of the initial program, but also of

Developing a Template for Electronic Portfolios in Career and Technical Education

ERIC Educational Resources Information Center

Fowler, Matthew

2012-01-01

The purposes of this multiple case study were to determine if manufacturing and services sector employers found value in the use of an ePortfolio in the hiring process, and to develop a suggested template for an ePortfolio format to be used within career and technical education. Electronic portfolios "allow students to showcase their…

A Holocaust Exhibit ePortfolio: Actively Engaging Students

ERIC Educational Resources Information Center

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…

E-Portfolios in Teacher Development: The Better Option?

ERIC Educational Resources Information Center

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…

Space Science Research and Technology at NASA's Marshall Space Flight Center

NASA Technical Reports Server (NTRS)

Johnson, Charles L.

2007-01-01

This presentation will summarize the various projects and programs managed in the Space Science Programs and Projects Office at NASA's Marshall Space Flight Center in Huntsville, Alabama. Projects in the portfolio include NASA's Chandra X-Ray telescope, Hinode solar physics satellite, various advanced space propulsion technologies, including solar sails and tethers, as well as NASA's Discovery and New Frontiers Programs.

Belief Propagation Algorithm for Portfolio Optimization Problems

PubMed Central

2015-01-01

The typical behavior of optimal solutions to portfolio optimization problems with absolute deviation and expected shortfall models using replica analysis was pioneeringly estimated by S. Ciliberti et al. [Eur. Phys. B. 57, 175 (2007)]; however, they have not yet developed an approximate derivation method for finding the optimal portfolio with respect to a given return set. In this study, an approximation algorithm based on belief propagation for the portfolio optimization problem is presented using the Bethe free energy formalism, and the consistency of the numerical experimental results of the proposed algorithm with those of replica analysis is confirmed. Furthermore, the conjecture of H. Konno and H. Yamazaki, that the optimal solutions with the absolute deviation model and with the mean-variance model have the same typical behavior, is verified using replica analysis and the belief propagation algorithm. PMID:26305462

Belief Propagation Algorithm for Portfolio Optimization Problems.

PubMed

Shinzato, Takashi; Yasuda, Muneki

2015-01-01

The typical behavior of optimal solutions to portfolio optimization problems with absolute deviation and expected shortfall models using replica analysis was pioneeringly estimated by S. Ciliberti et al. [Eur. Phys. B. 57, 175 (2007)]; however, they have not yet developed an approximate derivation method for finding the optimal portfolio with respect to a given return set. In this study, an approximation algorithm based on belief propagation for the portfolio optimization problem is presented using the Bethe free energy formalism, and the consistency of the numerical experimental results of the proposed algorithm with those of replica analysis is confirmed. Furthermore, the conjecture of H. Konno and H. Yamazaki, that the optimal solutions with the absolute deviation model and with the mean-variance model have the same typical behavior, is verified using replica analysis and the belief propagation algorithm.

The E-Portfolio: A Tool and a Process for Educational Leadership

ERIC Educational Resources Information Center

Hyland, N.; Kranzow, J.

2012-01-01

This mixed-method study focuses on the impact of using electronic portfolios (e-portfolios) in a graduate capstone course as a tool for increasing students' critical thinking and self-directed learning. The primary results indicate that the e-portfolio, as both a tool and a process, shows great potential. This study also reveals the capacity of…

ePortfolio Effectiveness: A(n Ill-Fated) Search for Empirical Support

ERIC Educational Resources Information Center

Bryant, Lauren H.; Chittum, Jessica R.

2013-01-01

ePortfolio has become ubiquitous in higher education over the course of the last decade, with faculty and institutions devoting both time and monetary resources to its use. Given this trend, the purpose of this study was to investigate the landscape of ePortfolio research to determine what evidence exists for ePortfolio's impact on student…

Information Technology and Literacy Assessment.

ERIC Educational Resources Information Center

Balajthy, Ernest

2002-01-01

Compares technology predictions from around 1989 with the technology of 2002. Discusses the place of computer-based assessment today, computer-scored testing, computer-administered formal assessment, Internet-based formal assessment, computerized adaptive tests, placement tests, informal assessment, electronic portfolios, information management,…

Portfolios with fuzzy returns: Selection strategies based on semi-infinite programming

NASA Astrophysics Data System (ADS)

Vercher, Enriqueta

2008-08-01

This paper provides new models for portfolio selection in which the returns on securities are considered fuzzy numbers rather than random variables. The investor's problem is to find the portfolio that minimizes the risk of achieving a return that is not less than the return of a riskless asset. The corresponding optimal portfolio is derived using semi-infinite programming in a soft framework. The return on each asset and their membership functions are described using historical data. The investment risk is approximated by mean intervals which evaluate the downside risk for a given fuzzy portfolio. This approach is illustrated with a numerical example.

Portfolio assessment during medical internships: How to obtain a reliable and feasible assessment procedure?

PubMed

Michels, Nele R M; Driessen, Erik W; Muijtjens, Arno M M; Van Gaal, Luc F; Bossaert, Leo L; De Winter, Benedicte Y

2009-12-01

A portfolio is used to mentor and assess students' clinical performance at the workplace. However, students and raters often perceive the portfolio as a time-consuming instrument. In this study, we investigated whether assessment during medical internship by a portfolio can combine reliability and feasibility. The domain-oriented reliability of 61 double-rated portfolios was measured, using a generalisability analysis with portfolio tasks and raters as sources of variation in measuring the performance of a student. We obtained reliability (Phi coefficient) of 0.87 with this internship portfolio containing 15 double-rated tasks. The generalisability analysis showed that an acceptable level of reliability (Phi = 0.80) was maintained when the amount of portfolio tasks was decreased to 13 or 9 using one and two raters, respectively. Our study shows that a portfolio can be a reliable method for the assessment of workplace learning. The possibility of reducing the amount of tasks or raters while maintaining a sufficient level of reliability suggests an increase in feasibility of portfolio use for both students and raters.

An extended ASLD trading system to enhance portfolio management.

PubMed

Hung, Kei-Keung; Cheung, Yiu-Ming; Xu, Lei

2003-01-01

An adaptive supervised learning decision (ASLD) trading system has been presented by Xu and Cheung (1997) to optimize the expected returns of investment without considering risks. In this paper, we propose an extension of the ASLD system (EASLD), which combines the ASLD with a portfolio optimization scheme to take a balance between the expected returns and risks. This new system not only keeps the learning adaptability of the ASLD, but also dynamically controls the risk in pursuit of great profits by diversifying the capital to a time-varying portfolio of N assets. Consequently, it is shown that: 1) the EASLD system gives the investment risk much smaller than the ASLD one; and 2) more returns are gained through the EASLD system in comparison with the two individual portfolio optimization schemes that statically determine the portfolio weights without adaptive learning. We have justified these two issues by the experiments.

Estimating risk of foreign exchange portfolio: Using VaR and CVaR based on GARCH-EVT-Copula model

NASA Astrophysics Data System (ADS)

Wang, Zong-Run; Chen, Xiao-Hong; Jin, Yan-Bo; Zhou, Yan-Ju

2010-11-01

This paper introduces GARCH-EVT-Copula model and applies it to study the risk of foreign exchange portfolio. Multivariate Copulas, including Gaussian, t and Clayton ones, were used to describe a portfolio risk structure, and to extend the analysis from a bivariate to an n-dimensional asset allocation problem. We apply this methodology to study the returns of a portfolio of four major foreign currencies in China, including USD, EUR, JPY and HKD. Our results suggest that the optimal investment allocations are similar across different Copulas and confidence levels. In addition, we find that the optimal investment concentrates on the USD investment. Generally speaking, t Copula and Clayton Copula better portray the correlation structure of multiple assets than Normal Copula.

From Process to Outcome: The Effect of Portfolio Assessment on Student Learning.

ERIC Educational Resources Information Center

Tiwari, Agnes; Tang, Catherine

2003-01-01

Three findings emerged from 12 Hong Kong student nurses' descriptions of their experiences of portfolio assessment: (1) despite initial anxiety, all favored portfolio use; (2) portfolios had positive academic and affective outcomes; and (3) unexpectedly, spontaneous collaborative learning and increased motivation resulted. (Contains 35…

Research on regularized mean-variance portfolio selection strategy with modified Roy safety-first principle.

PubMed

Atta Mills, Ebenezer Fiifi Emire; Yan, Dawen; Yu, Bo; Wei, Xinyuan

2016-01-01

We propose a consolidated risk measure based on variance and the safety-first principle in a mean-risk portfolio optimization framework. The safety-first principle to financial portfolio selection strategy is modified and improved. Our proposed models are subjected to norm regularization to seek near-optimal stable and sparse portfolios. We compare the cumulative wealth of our preferred proposed model to a benchmark, S&P 500 index for the same period. Our proposed portfolio strategies have better out-of-sample performance than the selected alternative portfolio rules in literature and control the downside risk of the portfolio returns.

Can One Portfolio Measure the Six ACGME General Competencies?

ERIC Educational Resources Information Center

Jarvis, Robert M.; O'Sullivan, Patricia S.; McClain, Tina; Clardy, James A.

2004-01-01

Objective: To determine that portfolios, useable by any program, can provide needed evidence of resident performance within the ACGME general competencies. Methods: Eighteen residents constructed portfolios with selected entries from thirteen psychiatric skills. Two raters assessed whether entries reflected resident performance within the general…

7 CFR 4290.740 - Portfolio diversification (“overline” limitation).

Code of Federal Regulations, 2010 CFR

2010-01-01

... 7 Agriculture 15 2010-01-01 2010-01-01 false Portfolio diversification (âoverlineâ limitation). 4290.740 Section 4290.740 Agriculture Regulations of the Department of Agriculture (Continued) RURAL... Enterprise for Rbic Financing § 4290.740 Portfolio diversification (“overline” limitation). (a) Without the...

Hospital innovation portfolios: key determinants of size and innovativeness.

PubMed

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.

Portfolio theory and cost-effectiveness analysis: a further discussion.

PubMed

Sendi, Pedram; Al, Maiwenn J; Rutten, Frans F H

2004-01-01

Portfolio theory has been suggested as a means to improve the risk-return characteristics of investments in health-care programs through diversification when costs and effects are uncertain. This approach is based on the assumption that the investment proportions are not subject to uncertainty and that the budget can be invested in toto in health-care programs. In the present paper we develop an algorithm that accounts for the fact that investment proportions in health-care programs may be uncertain (due to the uncertainty associated with costs) and limited (due to the size of the programs). The initial budget allocation across programs may therefore be revised at the end of the investment period to cover the extra costs of some programs with the leftover budget of other programs in the portfolio. Once the total budget is equivalent to or exceeds the expected costs of the programs in the portfolio, the initial budget allocation policy does not impact the risk-return characteristics of the combined portfolio, i.e., there is no benefit from diversification anymore. The applicability of portfolio methods to improve the risk-return characteristics of investments in health care is limited to situations where the available budget is much smaller than the expected costs of the programs to be funded.

Noisy covariance matrices and portfolio optimization

NASA Astrophysics Data System (ADS)

Pafka, S.; Kondor, I.

2002-05-01

According to recent findings [#!bouchaud!#,#!stanley!#], empirical covariance matrices deduced from financial return series contain such a high amount of noise that, apart from a few large eigenvalues and the corresponding eigenvectors, their structure can essentially be regarded as random. In [#!bouchaud!#], e.g., it is reported that about 94% of the spectrum of these matrices can be fitted by that of a random matrix drawn from an appropriately chosen ensemble. In view of the fundamental role of covariance matrices in the theory of portfolio optimization as well as in industry-wide risk management practices, we analyze the possible implications of this effect. Simulation experiments with matrices having a structure such as described in [#!bouchaud!#,#!stanley!#] lead us to the conclusion that in the context of the classical portfolio problem (minimizing the portfolio variance under linear constraints) noise has relatively little effect. To leading order the solutions are determined by the stable, large eigenvalues, and the displacement of the solution (measured in variance) due to noise is rather small: depending on the size of the portfolio and on the length of the time series, it is of the order of 5 to 15%. The picture is completely different, however, if we attempt to minimize the variance under non-linear constraints, like those that arise e.g. in the problem of margin accounts or in international capital adequacy regulation. In these problems the presence of noise leads to a serious instability and a high degree of degeneracy of the solutions.

Making more of it! Medical students' motives for voluntarily keeping an extended portfolio.

PubMed

Deketelaere, Ann; Kelchtermans, Geert; Druine, Nathalie; Vandermeersch, Evelyn; Struyf, Elke; De Leyn, Paul

2007-10-01

Although medical students' use of portfolios has been studied from many angles, little is known about their motivations. This article explores medical students' motives for voluntarily compiling a learning portfolio that widely exceeded the assignments. Content analysis was performed on 22 (8%; n = 22/269) extensive portfolios, followed by a semi-structured interview with 11 medical students. Building on the theoretical work of Simons et al. (2004), interpretative analysis was used to reconstruct and understand the medical students' motives for the effort they put into the portfolios. Compiling an elaborate portfolio is mainly instigated by a personal instrumentality (internally regulated instrumental motivation). These medical students reflected on what they considered important and useful. The portfolio was a tool to achieve self-set goals, yet the specific goals turned out to be very different among the students, reflecting their particular needs and experiences during clerkship. Motivation theory shows that students who are internally regulated use more deep-level learning strategies and perform better. Internally regulated motivation mainly occurs when students use the portfolio to achieve their self-set goals. The formal portfolio assignments, enforced by the medical school, were more related with externally regulated motivation.

Portfolios in Context: A Comparative Study in Two Preservice Teacher Education Programs

ERIC Educational Resources Information Center

Fiedler, Rebecca L.; Mullen, Laurie; Finnegan, Margaret

2009-01-01

Portfolio authoring tools within teacher preparation institutions have changed dramatically as portfolios have moved from paper to electronic formats and now to the Web. This study used Engestrom's Cultural-Historical Activity Theory (1987) to examine how portfolio tools, along with external influences and institutional contexts, mediate the…

Estimating Risk of Natural Gas Portfolios by Using GARCH-EVT-Copula Model.

PubMed

Tang, Jiechen; Zhou, Chao; Yuan, Xinyu; Sriboonchitta, Songsak

2015-01-01

This paper concentrates on estimating the risk of Title Transfer Facility (TTF) Hub natural gas portfolios by using the GARCH-EVT-copula model. We first use the univariate ARMA-GARCH model to model each natural gas return series. Second, the extreme value distribution (EVT) is fitted to the tails of the residuals to model marginal residual distributions. Third, multivariate Gaussian copula and Student t-copula are employed to describe the natural gas portfolio risk dependence structure. Finally, we simulate N portfolios and estimate value at risk (VaR) and conditional value at risk (CVaR). Our empirical results show that, for an equally weighted portfolio of five natural gases, the VaR and CVaR values obtained from the Student t-copula are larger than those obtained from the Gaussian copula. Moreover, when minimizing the portfolio risk, the optimal natural gas portfolio weights are found to be similar across the multivariate Gaussian copula and Student t-copula and different confidence levels.

Estimating Risk of Natural Gas Portfolios by Using GARCH-EVT-Copula Model

PubMed Central

Tang, Jiechen; Zhou, Chao; Yuan, Xinyu; Sriboonchitta, Songsak

2015-01-01

This paper concentrates on estimating the risk of Title Transfer Facility (TTF) Hub natural gas portfolios by using the GARCH-EVT-copula model. We first use the univariate ARMA-GARCH model to model each natural gas return series. Second, the extreme value distribution (EVT) is fitted to the tails of the residuals to model marginal residual distributions. Third, multivariate Gaussian copula and Student t-copula are employed to describe the natural gas portfolio risk dependence structure. Finally, we simulate N portfolios and estimate value at risk (VaR) and conditional value at risk (CVaR). Our empirical results show that, for an equally weighted portfolio of five natural gases, the VaR and CVaR values obtained from the Student t-copula are larger than those obtained from the Gaussian copula. Moreover, when minimizing the portfolio risk, the optimal natural gas portfolio weights are found to be similar across the multivariate Gaussian copula and Student t-copula and different confidence levels. PMID:26351652

The Development of an Electronic Portfolio for Postgraduate Surgical Training in Flanders.

PubMed

Peeraer, G; Van Humbeeck, B; De Leyn, P; Delvaux, G; Hubens, G; Pattyn, P; De Win, G

2015-01-01

Contemporary surgical postgraduate training is characterized by clear outcomes for the profession and an assessment program that shows that trainees master these outcomes. The tool used to collect assessment and feedback instruments is the portfolio, nowadays used in many countries worldwide. The four Flemish surgical coordinators, together with experts from different universities, devised an electronic portfolio. This portfolio holds both the logbook, as imposed by the evaluation committee and assessment instruments used for the Master in Specialized Medicine. The e-portfolio is now used by a number of surgical trainees and has been approved by the evaluation committee. In 1015, all Flemish surgical trainees will be using one and the same e-portfolio. Although the e-portfolio for surgical training has now been devised and accepted by all major parties involved, a lot of work has to be done to implement the instrument. As resident duty hours show no improvement on education in surgery (but rather a perception of worsened education) surgery training is fazing huge challenges.

Enhanced index tracking modelling in portfolio optimization

NASA Astrophysics Data System (ADS)

Lam, W. S.; Hj. Jaaman, Saiful Hafizah; Ismail, Hamizun bin

2013-09-01

Enhanced index tracking is a popular form of passive fund management in stock market. It is a dual-objective optimization problem, a trade-off between maximizing the mean return and minimizing the risk. Enhanced index tracking aims to generate excess return over the return achieved by the index without purchasing all of the stocks that make up the index by establishing an optimal portfolio. The objective of this study is to determine the optimal portfolio composition and performance by using weighted model in enhanced index tracking. Weighted model focuses on the trade-off between the excess return and the risk. The results of this study show that the optimal portfolio for the weighted model is able to outperform the Malaysia market index which is Kuala Lumpur Composite Index because of higher mean return and lower risk without purchasing all the stocks in the market index.

Technology and Teaching Philosophy

ERIC Educational Resources Information Center

King, Paul C.

2012-01-01

This article discusses the challenges faced when integrating new technologies into the classroom. Viewing the experiences of teaching a first year learning community through the lens of the principles of the Reflective Teaching Portfolio, the author looks to answer the question: "How should Technology relate to our Teaching Philosophy?"…

Education for Rural Development - A Portfolio of Studies. Volume 4: Manpower, Science, and Technology and Extension Education.

ERIC Educational Resources Information Center

United Nations Educational, Scientific and Cultural Organization, Bangkok (Thailand). Asian Centre for Educational Innovation for Development.

Volume 4 in a five-volume portfolio of studies reflecting different facets of the concept of education for rural development consists of three studies. The first study, "Planning for Meeting Manpower Requirements and Training for Self-Employment in Rural Areas," by Jose R. Vergara (Philippines), analyzes the scenario of growth and…

Portfolio of automated trading systems: complexity and learning set size issues.

PubMed

Raudys, Sarunas

2013-03-01

In this paper, we consider using profit/loss histories of multiple automated trading systems (ATSs) as N input variables in portfolio management. By means of multivariate statistical analysis and simulation studies, we analyze the influences of sample size (L) and input dimensionality on the accuracy of determining the portfolio weights. We find that degradation in portfolio performance due to inexact estimation of N means and N(N - 1)/2 correlations is proportional to N/L; however, estimation of N variances does not worsen the result. To reduce unhelpful sample size/dimensionality effects, we perform a clustering of N time series and split them into a small number of blocks. Each block is composed of mutually correlated ATSs. It generates an expert trading agent based on a nontrainable 1/N portfolio rule. To increase the diversity of the expert agents, we use training sets of different lengths for clustering. In the output of the portfolio management system, the regularized mean-variance framework-based fusion agent is developed in each walk-forward step of an out-of-sample portfolio validation experiment. Experiments with the real financial data (2003-2012) confirm the effectiveness of the suggested approach.

Creation of Electronic Portfolios in an Educational Leadership Cohort

ERIC Educational Resources Information Center

Boggan, Matthew K.; Harper, Sallie

2011-01-01

According to a study conducted by the American Association of Colleges of Teacher Education (2002), approximately 90% of universities and colleges of education use portfolios regarding student assessment. Forty percent of universities use electronic portfolios in teacher certification programs for licensing. Because of the popular use of…

The Career Advancement Portfolio. Advancement for Low-Wage Workers

ERIC Educational Resources Information Center

Jobs for the Future, 2006

2006-01-01

Jobs for the Future created the "Career Advancement Portfolio" as central to its commitment to developing, implementing, and advocating for models, strategies, and policies that enable adults to advance toward economic self-sufficiency for themselves and their families. The "Portfolio" brings together the most innovative workforce development…

13 CFR 107.740 - Portfolio diversification (“overline” limitation).

Code of Federal Regulations, 2010 CFR

2010-01-01

... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Portfolio diversification (âoverlineâ limitation). 107.740 Section 107.740 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION... Eligibility of A Small Business for Sbic Financing § 107.740 Portfolio diversification (“overline” limitation...

Information Technology to Help Drive Business Innovation and Growth

NASA Astrophysics Data System (ADS)

Alonso, Igor Aguilar; Verdún, José Carrillo; Caro, Edmundo Tovar

This paper outlines how information technology (IT) can help to drive business innovation and growth. Today innovation is a key to properly managing business growth from all angles. IT governance is responsible for managing and aligning IT with the business objectives; managing strategic demand through the projects portfolio or managing operational demand through the services portfolio. IT portfolios offer the possibility of finding new opportunities to make changes and improve through innovation, enabling savings in capital expenditure and the company's IT operations staff time.

Exploring the Role of Assessment Criteria during Teachers' Collaborative Judgement Processes of Students' Portfolios

ERIC Educational Resources Information Center

Van der Schaaf, Marieke; Baartman, Liesbeth; Prins, Frans

2012-01-01

Student portfolios are increasingly used for assessing student competences in higher education, but results about the construct validity of portfolio assessment are mixed. A prerequisite for construct validity is that the portfolio assessment is based on relevant portfolio content. Assessment criteria, are often used to enhance this condition.…

Fellows' Perceptions of a Mandatory Reflective Electronic Portfolio in a Geriatric Medicine Fellowship Program

ERIC Educational Resources Information Center

Ruiz, Jorge G.; Qadri, Syeda S.; Karides, Marina; Castillo, Carmen; Milanez, Marcos; Roos, Bernard A.

2009-01-01

Electronic portfolios (ePortfolios) can be useful for evaluating and documenting mastery of competencies. We investigated geriatric medicine fellows' perceptions of an ePortfolio. We conducted surveys and focus groups followed by quantitative and qualitative data analysis. Our study revealed that fellows considered the ePortfolio acceptable and…

On portfolio risk diversification

NASA Astrophysics Data System (ADS)

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.

MSFC Technology Year in Review 2015

NASA Technical Reports Server (NTRS)

Reynolds, David; Tinker, Mike

2015-01-01

MSFC has a strong diverse portfolio of technology development projects, ranging from flight projects to very low Technology Readiness Level (TRL) laboratory projects. The 2015 Year in Review highlights the Center's technology projects and celebrates their accomplishments to raise awareness of technology development work that is integral to the success of future Agency flight programs.

Development and Validation of E-Portfolios: The UAE Pre-Service Teachers' Experiences

ERIC Educational Resources Information Center

Forawi, Sufian A.; Almekhlafi, Abdurrahman G.; Al-Mekhlafy, Mohamed H.

2012-01-01

Research has indicated the importance of evaluating the experiences related to developing e-portfolios (electronic portfolio) to contribute to the overall excellence in teaching and learning. Researchers (instructors) of the present study used an exit e-portfolios, a questionnaire and follow up interviews to describe development and evaluation of…

7 CFR 4290.620 - Requirements to obtain information from Portfolio Concerns.

Code of Federal Regulations, 2011 CFR

2011-01-01

... the Enterprise to submit such financial statements, plans of operation (including intended use of financing proceeds), cash flow analyses, projections, and such economic development information about the... financial and economic development information. (1) The terms of each Financing must require the Portfolio...

Using portfolios for clinical practice learning and assessment: the pre-registration nursing student's perspective.

PubMed

McMullan, Miriam

2008-10-01

Portfolios have been introduced to help to integrate theory and practice and thereby address the issue of the theory-practice divide. Although there has been much theoretical discussion about portfolio use in clinical placements, few studies have focused on the students' perceptions regarding their use. To obtain adult branch pre-registration nursing students' perspectives on using portfolios for their clinical practice learning and assessment, postal questionnaires were sent to 253 diploma of nursing students with a reminder to all students three weeks later. The response rate was 69% (174/253). This paper reports on the qualitative findings of the study, which employed both quantitative and qualitative methods. Although students stated that portfolios helped them in their development of self-awareness and independent learning, they indicated that portfolios do not sufficiently address the assessment of their clinical skills and the integration of theory and practice. They considered that portfolios could be greatly improved in three areas, namely in the conflict between using portfolios for both assessment and learning, the amount of support and guidance students feel they receive with their portfolio use and the portfolio design.

Big Data Challenges of High-Dimensional Continuous-Time Mean-Variance Portfolio Selection and a Remedy.

PubMed

Chiu, Mei Choi; Pun, Chi Seng; Wong, Hoi Ying

2017-08-01

Investors interested in the global financial market must analyze financial securities internationally. Making an optimal global investment decision involves processing a huge amount of data for a high-dimensional portfolio. This article investigates the big data challenges of two mean-variance optimal portfolios: continuous-time precommitment and constant-rebalancing strategies. We show that both optimized portfolios implemented with the traditional sample estimates converge to the worst performing portfolio when the portfolio size becomes large. The crux of the problem is the estimation error accumulated from the huge dimension of stock data. We then propose a linear programming optimal (LPO) portfolio framework, which applies a constrained ℓ 1 minimization to the theoretical optimal control to mitigate the risk associated with the dimensionality issue. The resulting portfolio becomes a sparse portfolio that selects stocks with a data-driven procedure and hence offers a stable mean-variance portfolio in practice. When the number of observations becomes large, the LPO portfolio converges to the oracle optimal portfolio, which is free of estimation error, even though the number of stocks grows faster than the number of observations. Our numerical and empirical studies demonstrate the superiority of the proposed approach. © 2017 Society for Risk Analysis.

Individualised Marks for Group Work: Embedding an ePortfolio Criterion in a Criterion Referenced Assessment (CRA) Rubric for Group-Work Assessment

ERIC Educational Resources Information Center

Ellis, Leonie; Kelder, Jo-Anne

2012-01-01

Technology Enhanced Learning and Teaching (TELT) is a ubiquitous feature of the learning and teaching landscape at the University of Tasmania (UTAS), supported and guided by a university-wide TELT action plan. This paper reports on the most recent stage of an ongoing investigation into the use of ePortfolio learning technology to improve students'…

Water Power Technologies Office 2017 Marine Energy Accomplishments

DOE Office of Scientific and Technical Information (OSTI.GOV)

Water Power Technologies Office

The U.S. Department of Energy's Water Power Technologies Office's marine and hydrokinetic portfolio has numerous projects that support industry advancement in wave, tidal, and ocean and river current technologies. In order to strengthen state-of-the-art technologies in these fields and bring them closer to commercialization, the Water Power Technologies Office funds industry, academia, and the national laboratories. A U.S. chapter on marine and hydrokinetic energy research and development was included in the Ocean Energy Systems' Technology Programme—an intergovernmental collaboration between countries, which operates under a framework established by the International Energy Agency. This brochure is an overview of the U.S. accomplishmentsmore » and updates from that report.« less

Managing the vitamin A program portfolio: a case study of Zambia, 2013-2042.

PubMed

Fiedler, John L; Lividini, Keith

2014-03-01

Micronutrient deficiencies continue to constitute a major burden of disease, particularly in Africa and South Asia. Programs to address micronutrient deficiencies have been increasing in number, type, and scale in recent years, creating an ever-growing need to understand their combined coverage levels, costs, and impacts so as to more effectively combat deficiencies, avoid putting individuals at risk for excess intakes, and ensure the efficient use of public health resources. To analyze combinations of the two current programs--sugar fortification and Child Health Week (CHW)--together with four prospective programs--vegetable oil fortification, wheat flour fortification, maize meal fortification, and biofortified vitamin A maize--to identify Zambia's optimal vitamin A portfolio. Combining program cost estimates and 30-year Zambian food demand projections, together with the Zambian 2005 Living Conditions Monitoring Survey, the annual costs, coverage, impact, and cost-effectiveness of 62 Zambian portfolios were modeled for the period from 2013 to 2042. Optimal portfolios are identified for each of five alternative criteria: average cost-effectiveness, incremental cost-effectiveness, coverage maximization, health impact maximization, and affordability. The most likely scenario is identified to be one that starts with the current portfolio and takes into account all five criteria. Starting with CHW and sugar fortification, it phases in vitamin A maize, oil, wheat flour, and maize meal (in that order) to eventually include all six individual interventions. Combining cost and Household Consumption and Expenditure Survey (HCES) data provides a powerful evidence-generating tool with which to understand how individual micronutrient programs interact and to quantify the tradeoffs involved in selecting alternative program portfolios.

Teaching Portfolios, Community, and Pre-Service Teachers' Professional Development

ERIC Educational Resources Information Center

Wray, Susan

2007-01-01

This article describes the findings of a qualitative study examining the extent to which participation in a portfolio-focused teacher learning community impacts pre-service teachers' understanding and development of a teaching portfolio. Additionally, the author was interested in understanding how, whether, and in what ways the group's…

Down the Yellow Chip Road: Hypertext Portfolios in Oz.

ERIC Educational Resources Information Center

Fischer, Katherine M.

1996-01-01

Describes a creative writing class in which students used hypertext to develop their writing portfolios. Suggests that, much like "Kansas Dorothy" who ventured into Oz, a "tornado" carried these students and their teacher from the safe Paperland to the yellow chip road of electronic portfolios. Notes that students' portfolios…

Measure for Measure: Using Portfolios in K-8 Mathematics.

ERIC Educational Resources Information Center

Kuhs, Therese M.

This book attempts to portray the reality that teachers face when trying to use portfolios. It uses anecdotes and examples that help carry important messages about portfolio use and contains model conversations and interactions. The conversations between teachers and students demonstrate strategies for involving children in the assessment process…

The Student Mathematics Portfolio: Value Added to Student Preparation?

ERIC Educational Resources Information Center

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…

Student Portfolios as Windows into Intercultural Knowledge and Knowing

ERIC Educational Resources Information Center

Johnson, Esko; Hynynen, Nina

2018-01-01

This research paper deals with intercultural knowledge and knowing as displayed in higher education student portfolios. The portfolios were written by student pairs taking a global education course at Centria University of Applied Sciences, Finland, during seven academic years. Conceptual metaphor theory and metaphor analysis were utilised to…

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

PubMed

Bleasel, Jane; Burgess, Annette; Weeks, Ruth; Haq, Inam

2016-10-21

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. 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. 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. 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.

75 FR 81405 - Portfolio Holdings

Federal Register 2010, 2011, 2012, 2013, 2014

2010-12-28

... Treasury capital infusions under the PSPAs to remain solvent. The circumstances of the portfolio regulation... conservatorship and supported by Treasury infusions of capital. The principal concerns of the statute are safety...

The Effects of Paper-Based Portfolios and Weblog-Based Electronic Portfolios on Limited English Proficiency Students in Writing for Service Industry Course

ERIC Educational Resources Information Center

Wanchid, Raveewan; Charoensuk, Valaikorn

2015-01-01

The purposes of this study were to investigate the effects of the use of paper-based and weblog-based electronic portfolios on the writing achievement of limited English proficiency students, to survey the students' attitudes towards the use of the portfolio assessment, and to compare the viewpoints of the students in the control and experimental…

Scale-dependent portfolio effects explain growth inflation and volatility reduction in landscape demography

PubMed Central

2017-01-01

Population demography is central to fundamental ecology and for predicting range shifts, decline of threatened species, and spread of invasive organisms. There is a mismatch between most demographic work, carried out on few populations and at local scales, and the need to predict dynamics at landscape and regional scales. Inspired by concepts from landscape ecology and Markowitz’s portfolio theory, we develop a landscape portfolio platform to quantify and predict the behavior of multiple populations, scaling up the expectation and variance of the dynamics of an ensemble of populations. We illustrate this framework using a 35-y time series on gypsy moth populations. We demonstrate the demography accumulation curve in which the collective growth of the ensemble depends on the number of local populations included, highlighting a minimum but adequate number of populations for both regional-scale persistence and cross-scale inference. The attainable set of landscape portfolios further suggests tools for regional population management for both threatened and invasive species. PMID:29109261

Ambiguity aversion and household portfolio choice puzzles: Empirical evidence*

PubMed Central

Dimmock, Stephen G.; Kouwenberg, Roy; Mitchell, Olivia S.; Peijnenburg, Kim

2017-01-01

We test the relation between ambiguity aversion and five household portfolio choice puzzles: nonparticipation in equities, low allocations to equity, home-bias, own-company stock ownership, and portfolio under-diversification. In a representative US household survey, we measure ambiguity preferences using custom-designed questions based on Ellsberg urns. As theory predicts, ambiguity aversion is negatively associated with stock market participation, the fraction of financial assets in stocks, and foreign stock ownership, but it is positively related to own-company stock ownership. Conditional on stock ownership, ambiguity aversion is related to portfolio under-diversification, and during the financial crisis, ambiguity-averse respondents were more likely to sell stocks. PMID:28458446

Ambiguity aversion and household portfolio choice puzzles: Empirical evidence.

PubMed

Dimmock, Stephen G; Kouwenberg, Roy; Mitchell, Olivia S; Peijnenburg, Kim

2016-03-01

We test the relation between ambiguity aversion and five household portfolio choice puzzles: nonparticipation in equities, low allocations to equity, home-bias, own-company stock ownership, and portfolio under-diversification. In a representative US household survey, we measure ambiguity preferences using custom-designed questions based on Ellsberg urns. As theory predicts, ambiguity aversion is negatively associated with stock market participation, the fraction of financial assets in stocks, and foreign stock ownership, but it is positively related to own-company stock ownership. Conditional on stock ownership, ambiguity aversion is related to portfolio under-diversification, and during the financial crisis, ambiguity-averse respondents were more likely to sell stocks.

Developing R&D portfolio business validity simulation model and system.

PubMed

Yeo, Hyun Jin; Im, Kwang Hyuk

2015-01-01

The R&D has been recognized as critical method to take competitiveness by not only companies but also nations with its value creation such as patent value and new product. Therefore, R&D has been a decision maker's burden in that it is hard to decide how much money to invest, how long time one should spend, and what technology to develop which means it accompanies resources such as budget, time, and manpower. Although there are diverse researches about R&D evaluation, business factors are not concerned enough because almost all previous studies are technology oriented evaluation with one R&D technology based. In that, we early proposed R&D business aspect evaluation model which consists of nine business model components. In this research, we develop a simulation model and system evaluating a company or industry's R&D portfolio with business model point of view and clarify default and control parameters to facilitate evaluator's business validity work in each evaluation module by integrate to one screen.

Contradictions in Portfolio Careers: Work Design and Client Relations

ERIC Educational Resources Information Center

Fenwick, Tara J.

2006-01-01

Purpose: The paper aims to explore "Portfolio work", an emerging form of flexible self-employment, which has been identified as significant but under-researched. This paper also seeks to explore the challenges and benefits of portfolio work from the perspective of individuals' experiences. Design/methodology/approach: The argument draws from a…

Portfolios for Development: A Guide for Trainers and Managers.

ERIC Educational Resources Information Center

Redman, Warren

Portfolios are increasingly being used to demonstrate competence and to show development needs among employees in organizations. This book explains what a portfolio is and how it links with the current training revolution taking place through the introduction of National Vocational Qualifications (NVQs) in Great Britain. It shows how portfolios…

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

PubMed

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.

Implementation of a professional portfolio: a tool to demonstrate professional development for advanced practice.

PubMed

Chamblee, Tracy B; Dale, Juanita Conkin; Drews, Barbie; Spahis, Joanna; Hardin, Teri

2015-01-01

The literature has a gap related to professional development for APRNs. In the United States, many health care organizations use clinical advancement programs for registered nurses, but APRNs are not often included in these programs. If APRNs are included, advancement opportunities are very limited. At CMC, implementation of a professional portfolio resulted in increased satisfaction among APPs regarding their ability to showcase professional growth and expertise, as well as the uniqueness of their advanced practice. Use of the professional portfolio led to improved recognition by APS and organizational leaders of APP performance excellence during the annual performance evaluation, as well as improved recognition among APP colleagues in terms of nominations for honors and awards.