Exact and Scaling Form of the Bipartite Fidelity of the Infinite XXZ Chain

We find an exact expression for the bipartite fidelity f=|'|^2, where |vac> is the vacuum eigenstate of an infinite-size antiferromagnetic XXZ chain and |vac>' is the vacuum eigenstate of an infinite-size XXZ chain which is split in two. We consider the quantity -ln(f) which has been put forward as a measure of quantum entanglement, and show that the large correlation length xi behaviour is consistent with a general conjecture -ln(f) ~ c/8 ln(xi), where c is the central charge of the UV conformal field theory (with c=1 for the XXZ chain). This behaviour is a natural extension of the existing conformal field theory prediction of -ln(f) ~ c/8 ln(L) for a length L bipartite system with 0<< L <<xi.Comment: 6 page

Section 367: An Enigma

Section 367 of the Internal Revenue Code of 1954 was enacted in its original form in 1932 in order to close what Congress considered to be a serious tax loophole available to domestic corporations and individuals carrying on business through the use of foreign corporations or contemplating the use of foreign corporations to realize large gains without paying taxes. The loophole resulted from the operation of the nonrecognition provisions of the Code dealing with the organization and reorganization of corporations. By using these provisions, individuals and corporations—both foreign and domestic—could transfer greatly appreciated property and unrealized profits on a tax-free basis to a new corporation organized in countries where certain transactions, e.g., sales of capital assets, were either taxed at low rates or not at all. An example would be the transfer of appreciated American stock and equipment to a corporation in Canada in a transaction which qualified for nonrecognition treatment under section 351. Thereafter, the Canadian corporation could sell the stock and equipment at little or no tax cost because Canada does not impose a capital gains tax. The Canadian corporation could then dissolve into its parent American corporation in a tax-free liquidation under section 332. By using these several steps, the American corporation could sell the appreciated property with none of the tax consequences that would be imposed upon a similar transaction taking place solely within the United States. Concerned with this type of activity, Congress enacted what is now section 367 in order to stop the use of tax haven countries in world-wide

Understanding the Integrative Role of an Academic Library for Undergraduate Student Workers

This study explored how undergraduate library student workers at an urban, 4-year public institution perceived their work experiences in an academic library as contributing to their social and academic integration in college. Tinto\u27s (1993) model on student departure formed the basis for this study where academic and social integration work together to influence institutional commitments ultimately leading to the decision to remain or leave the college. Undergraduate library student workers from various library departments were interviewed and it is from these interviews that a deeper understanding of the phenomenon of an academic library\u27s effect on undergraduate library student workers was gained. The study revealed that the undergraduate library student workers perceived experiencing many socially integrative and academically integrative experiences which they would not have had were they not employed in an academic library. After the data are discussed, the theoretical implications, policy implications, and suggestions for further research are offered

Individual perceptions of culture and change: a unifying perspective on change-oriented organizational cultures

2018 Fall.Includes bibliographical references.Organizational change has become a mainstay for today's organizations. Yet, organizational change efforts overwhelmingly represent unsuccessful and stressful events for both organizations and employees. Much of the extant literature on organizational change focuses on a modified culture as an outcome of change, but this ignores the potential for organizational culture itself to facilitate organizational change efforts by engendering an inherent value for organizational change in employees before changes even happen. I propose that one potential solution to unsuccessful change efforts is for organizations to adopt a change-oriented culture, making change acceptable rather than an obstacle to overcome. Because a changed culture is the typical change outcome, existing organizational culture frameworks are broad and therefore address organizational change (e.g., adaptive culture in the competing values framework, or learning organizations) in a cursory manner. Furthermore, these broad frameworks were developed in parallel yet isolated streams of research; hence, their value for predicting organizational change outcomes is limited. Therefore, to address failing organizational change efforts and disjointed culture frameworks, I synthesize the facets of existing organizational culture frameworks that focus on change to create and define a change-oriented culture. Data from multiple samples of a total of 963 Amazon's Mechanical Turk workers were used to test the psychometric properties of a new measure of change-oriented organizational culture. Structural equation modeling was used to assess the relationship of change-oriented organizational culture to its nomological network above and beyond existing cultural frameworks. Results from structural equation modeling indicated that change-oriented culture directly relates to organizational change attitudes, turnover intentions, and organizational commitment; indirectly relates to change-related behaviors through readiness for change; and indirectly relates to perceptions of change success through resistance to change. Moreover, change-oriented organizational culture related to change-related attitudes and organizationally relevant outcomes significantly better than the adhocracy dimension of the competing values framework, the innovative dimension of Wallach's organizational culture measure, and perceptions of learning organizational culture. However, both change-oriented organizational culture and perceptions of learning organizational culture related to affective commitment to change and organizational commitment equally well. This study advances the organizational culture literature by proposing a new theoretical orientation to change – that the culture can facilitate change efforts rather than simply serve as an outcome of change interventions – and furthermore, provides a first attempt at defining and collecting empirical data to support the validity of a change-oriented culture dimension

Social Collaborative Retrieval

Socially-based recommendation systems have recently attracted significant interest, and a number of studies have shown that social information can dramatically improve a system's predictions of user interests. Meanwhile, there are now many potential applications that involve aspects of both recommendation and information retrieval, and the task of collaborative retrieval---a combination of these two traditional problems---has recently been introduced. Successful collaborative retrieval requires overcoming severe data sparsity, making additional sources of information, such as social graphs, particularly valuable. In this paper we propose a new model for collaborative retrieval, and show that our algorithm outperforms current state-of-the-art approaches by incorporating information from social networks. We also provide empirical analyses of the ways in which cultural interests propagate along a social graph using a real-world music dataset.Comment: 10 page

Newcomer or \u27Old Timer\u27? A critical evaluation of Lave & Wenger\u27s theory of Communities of Practice through the use of Socratic-type dialogue

This is a short, informal discussion paper which examines the concepts behind Lave & Wenger’s (1991) theory of Communities of Practice and Situated Learning and reflects on how these concepts can inform our understanding of professional learning. Through the use of Socratic-type dialogue, the author uses a personal narrative to test some of the assumptions and tacit beliefs which surround situated learning, in order to identify and reflect on some of their limitations when applied in a practical setting

Providing Public Transport for Tourists in Rural Areas

Travel, both to the destination area and within the area, accounts for a high proportion of tourism’s emissions. Yet, relatively little attention has been directed at reducing emissions through encouraging visitors to use public rather private transport. This paper reports the findings of surveys of bus passengers within British rural tourist areas and demonstrates how they bring extra visitors and spending to attractions, while reducing car use. It discusses the potential of using public transport to enhance the tourism offer and the problems, and some solutions, of funding such services. Recent developments are introduced

Innovative Approaches to Emergency Medical Services Fellowship Challenges

Introduction: Since the development of an Accreditation Council of Graduate Medical Education (ACGME)-accredited emergency medical services (EMS) fellowship, there has been little published literature on effective methods of content delivery or training modalities. Here we explore a variety of innovative approaches to the development and revision of the EMS fellowship curriculum.Methods: Three academic, university-based ACGME-accredited EMS fellowship programs each implemented an innovative change to their existing training curricula. These changes included the following: a novel didactic curriculum delivery modality and evaluation; implementation of a distance education program to improve EMS fellows’ rural EMS experiences; and modification of an existing EMS fellowship curriculum to train a non-emergency medicine physician.Results: Changes made to each of the above EMS fellowship programs addressed unique challenges, demonstrating areas of success and promise for more generalized implementation of these curricula. Obstacles remain in tailoring the described curricula to the needs of each unique institution and system.Conclusion: Three separate curricula and program changes were implemented to overcome specific challenges and achieve educational goals. It is our hope that our shared experiences will enable others in addressing common barriers to teaching the EMS fellowship core content and share similar innovative approaches to educational challenges

Radiative transfer in highly scattering materials - numerical solution and evaluation of approximate analytic solutions

Numerical solutions for radiative transport in a class of anisotropically scattering materials are presented. Conditions for convergence and divergence of the iterative method are given and supported by computed results. The relation of two flux theories to the equation of radiative transfer for isotropic scattering is discussed. The adequacy of the two flux approach for the reflectance, radiative flux and radiative flux divergence of highly scattering media is evaluated with respect to solutions of the radiative transfer equation