Di Kang, Steven W. Kirkpatrick, Zhipeng Zhang, Xiang Liu and Zheyong Bian
Accurately estimating the severity of derailment is a crucial step in quantifying train derailment consequences and, thereby, mitigating its impacts. The purpose of this paper is…
Abstract
Purpose
Accurately estimating the severity of derailment is a crucial step in quantifying train derailment consequences and, thereby, mitigating its impacts. The purpose of this paper is to propose a simplified approach aimed at addressing this research gap by developing a physics-informed 1-D model. The model is used to simulate train dynamics through a time-stepping algorithm, incorporating derailment data after the point of derailment.
Design/methodology/approach
In this study, a simplified approach is adopted that applies a 1-D kinematic analysis with data obtained from various derailments. These include the length and weight of the rail cars behind the point of derailment, the train braking effects, derailment blockage forces, the grade of the track and the train rolling and aerodynamic resistance. Since train braking/blockage effects and derailment blockage forces are not always available for historical or potential train derailment, it is also necessary to fit the historical data and find optimal parameters to estimate these two variables. Using these fitted parameters, a detailed comparison can be performed between the physics-informed 1-D model and previous statistical models to predict the derailment severity.
Findings
The results show that the proposed model outperforms the Truncated Geometric model (the latest statistical model used in prior research) in estimating derailment severity. The proposed model contributes to the understanding and prevention of train derailments and hazmat release consequences, offering improved accuracy for certain scenarios and train types
Originality/value
This paper presents a simplified physics-informed 1-D model, which could help understand the derailment mechanism and, thus, is expected to estimate train derailment severity more accurately for certain scenarios and train types compared with the latest statistical model. The performance of the braking response and the 1-D model is verified by comparing known ride-down profiles with estimated ones. This validation process ensures that both the braking response and the 1-D model accurately represent the expected behavior.
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The Bureau of Economics in the Federal Trade Commission has a three-part role in the Agency and the strength of its functions changed over time depending on the preferences and…
Abstract
The Bureau of Economics in the Federal Trade Commission has a three-part role in the Agency and the strength of its functions changed over time depending on the preferences and ideology of the FTC’s leaders, developments in the field of economics, and the tenor of the times. The over-riding current role is to provide well considered, unbiased economic advice regarding antitrust and consumer protection law enforcement cases to the legal staff and the Commission. The second role, which long ago was primary, is to provide reports on investigations of various industries to the public and public officials. This role was more recently called research or “policy R&D”. A third role is to advocate for competition and markets both domestically and internationally. As a practical matter, the provision of economic advice to the FTC and to the legal staff has required that the economists wear “two hats,” helping the legal staff investigate cases and provide evidence to support law enforcement cases while also providing advice to the legal bureaus and to the Commission on which cases to pursue (thus providing “a second set of eyes” to evaluate cases). There is sometimes a tension in those functions because building a case is not the same as evaluating a case. Economists and the Bureau of Economics have provided such services to the FTC for over 100 years proving that a sub-organization can survive while playing roles that sometimes conflict. Such a life is not, however, always easy or fun.
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Graziella Pagliarulo McCarron, Steven Zhou, Alec Campbell, Elizabeth Schierbeek and Kailee Kodama Muscente
The purpose of this study was to explore how variables such as student demographics, pre-college leadership activities, and perceived pre-college parenting behaviors predict…
Abstract
The purpose of this study was to explore how variables such as student demographics, pre-college leadership activities, and perceived pre-college parenting behaviors predict students’ leader self-efficacy (i.e., individuals’ confidence in themselves to lead and belief that others will support their leadership [Hannah et al., 2008]) in college and leader emergence (i.e., college-based leadership involvements [DeRue & Ashford, 2010]) in college. Undergraduate students (n = 420) at a large, public university in the Mid-Atlantic were surveyed to examine these relationships and data were analyzed using hierarchical and logistic regression, with appropriate controls and moderators. Findings included discovery that pre-college engagement with sports team positional leadership, community service, extracurriculars, and positive parenting behaviors, such as family routine and greater quality time with parents, predicted leader self-efficacy. Further, findings noted that pre-college community service, extracurriculars, peer tutoring and perceptions of parental quality time and proactive parenting predicted leader emergence. This study suggests that students’ leadership development is influenced by myriad systems across the lifespan and demonstrates that, as educators committed to student development, we must engage the full arc of our students’ leadership journeys and provide for intentional partnerships between higher education and the K-12 community.
Barrie O. Pettman and Richard Dobbins
This issue is a selected bibliography covering the subject of leadership.
Abstract
This issue is a selected bibliography covering the subject of leadership.
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Lindsey Pike, Roger Indge, Corinne Leverton, Deirdre Ford and Tony Gilbert
Cornwall has implemented significant changes to the way that it delivers its safeguarding adults training. This paper outlines the benefits of combining safeguarding adults, the…
Abstract
Cornwall has implemented significant changes to the way that it delivers its safeguarding adults training. This paper outlines the benefits of combining safeguarding adults, the Mental Capacity Act 2005 (HM Government, 2005a) and equality and diversity training within a human rights framework. It examines the notion of learning transfer and considers how the design and delivery of training can improve the transfer of learning into practice. Finally, it highlights the importance of a receptive workplace culture to promote effective learning transfer.
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The purpose of this paper is to identify and apply best practices in university entrepreneurship education to the creation of a new MBA in entrepreneurship and innovation…
Abstract
Purpose
The purpose of this paper is to identify and apply best practices in university entrepreneurship education to the creation of a new MBA in entrepreneurship and innovation management. It is a direct response to calls for a total re-envisioning of entrepreneurship education and criticism that existing programs lack rigour, content, pedagogy, measurement and an established definition.
Design/methodology/approach
This article uses reviews of the literature to identify normative best practices and how to apply them to the new program. An entrepreneurship program design framework (EPDF) was created and applied to a new MBA program being developed in central Germany.
Findings
Most studies describe aspects of current programs (e.g. lists of courses) but almost none say what should be in a program. Others provide abstract guidance (e.g. programs should define entrepreneurship) but do not give specific recommendations (e.g. what the definition should be). The proposed EPDF provided a rigorous structure for reviewing the literature, designing the new program and establishing specific best practice recommendations for defining program goals, content, pedagogy and measurement of student transformation.
Research limitations/implications
The entrepreneurship literature is largely silent on normative best practice guidance, so the proposed application of best practices should be evaluated in that context.
Originality/value
Previous articles present relatively abstract frameworks and concepts, whereas this article is a direct application of the practical implications of these concepts. The proposed normative best practice guidelines may be somewhat controversial, but should stimulate useful discussion.
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John Egan, Juliann Sergi McBrayer, Steven Tolman and Pamela Wells
Limited research exists that assesses the transfer of leadership learning from an undergraduate leadership program into alumni work environments. This study explored alumni’…
Abstract
Limited research exists that assesses the transfer of leadership learning from an undergraduate leadership program into alumni work environments. This study explored alumni’ valuation of an undergraduate leadership program by gaining an understanding of what leadership learning and leadership behaviors transferred into work environments. The participants were alumni that graduated from the same university in the southeastern United States, and while enrolled completed a four-year, co-curricular leadership program. Eight participant alumni engaged in semi-structured interviews as well as completed the Leadership Practices Inventory. The findings indicated that specific leadership learning did effectively transfer to work environments, and program alumni were frequently engaged in the Five Practices of Exemplary Leadership at work to some degree. When developing leadership programs, practitioners may consider incorporating similar programmatic attributes and leadership learning deemed valuable by program alumni.
The Foreign Corrupt Practices Act (FCPA) of 1977 and its amendment – the Trade and Competitive Act of 1988 – are unique not only in the history of the accounting and auditing…
Abstract
The Foreign Corrupt Practices Act (FCPA) of 1977 and its amendment – the Trade and Competitive Act of 1988 – are unique not only in the history of the accounting and auditing profession, but also in international law. The Acts raised awareness of the need for efficient and adequate internal control systems to prevent illegal acts such as the bribery of foreign officials, political parties and governments to secure or maintain contracts overseas. Its uniqueness is also due to the fact that the USA is the first country to pioneer such a legislation that impacted foreign trade, international law and codes of ethics. The research traces the history of the FCPA before and after its enactment, the role played by the various branches of the United States Government – Congress, Department of Justice, Securities Exchange commission (SEC), Central Intelligence Agency (CIA) and the Internal Revenue Service (IRS); the contributions made by professional associations such as the American Institute of Certified Public Accountants (AICFA), the Institute of Internal Auditors (IIA), the American Bar Association (ABA); and, finally, the role played by various international organizations such as the United Nations (UN), the Organization for Economic Cooperation and Development (OECD), the World Trade Organization (WTO) and the International Federation of Accountants (IFAC). A cultural, ethical and legalistic background will give a better understanding of the FCPA as wll as the rationale for its controversy.
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Reference librarians in various library settings are often assigned responsibilities for training students, support staff, or other new professionals, a task for which they rarely…
Abstract
Reference librarians in various library settings are often assigned responsibilities for training students, support staff, or other new professionals, a task for which they rarely have sufficient professional education. This bibliography recommends readings on topics that will assist reference librarians in understanding the philosophy of staff development. The readings listed here cover subjects such as: establishing an atmosphere that facilitates learning, assessing training needs, describing competent performance, writing clear and specific objectives, selecting appropriate training methods, maintaining skills and providing feedback, and evaluating the effectiveness of a training program.