Spin-quantization and spin-orbit coupling effects on the line shapes of triplet states. II. The "small" exciton problem

This paper presents a detailed study of the effect of spin‐quantization and spin–orbit coupling on the transition energies of triplet state dimers or small excitons. We consider both translationally equivalent (AA) and inequivalent (AB) dimers. For the AA and AB systems, we calculate transition frequency shifts induced by the spin–orbital coupling and by the spin–spin interactions between the plus (+) and minus (−) states of the dimer. As a result of these combined effects the selective coupling between the ± states of the singlet and the ± states of the triplet AA dimer system is not operative in the AB system. Furthermore, the role of the gas‐to‐crystal shifts and the intermolecular spin–spin interactions is to change the observed transition frequencies and hence cause a dispersion in the frequencies of the ± states. The relationship between such a dispersion in the AA and the same AB system is directly related to molecular parameters such as the strength of spin–orbital coupling. These results are applied to three experimental findings obtained for different dimer systems—phenazine, naphthalene, and tetrachlorobenzene dimers isolated in isotopically mixed crystals at T<2 °K. The phenazine results are reported here and the other data on naphthalene and tetrachlorobenzene were obtained from the literature. Agreement between theory and the recent experiments is encouragingly good

Cost Per User: Analyzing EZProxy Logs for Assessment

Cost per use has long been a staple of collection development decision‐making for electronic resources, but what of the users behind those retrieval and search counts? Questions about the interdisciplinary usage of an e‐resource, the depth of integration into a given program or course, and who will miss it if it is cancelled are generally relegated to the realm of anecdotal evidence. Researchers at Nevada State College have made efforts to remedy this gap in knowledge by analyzing EZProxy logs, which can be set up to capture unique user identifiers at the point of authentication into library electronic resources. When matched with institutional data about those users, this data can answer questions such as cost per user, percent of users within the institution as a whole or a specific department, and frequency and depth of use for the average user. Ultimately, librarians can even discover if library users have higher GPAs or make better grades on research assignments. This paper will provide a summary of the work of the research team at Nevada State College, currently in the midst of their first year of EZProxy log analysis

Facilitating Public Participation in the Eastern Cape Province: A Case Study of the Centre for Governance in Africa

Decreasing amounts of public participation threaten to undermine the legitimacy of democracy in South Africa. Numerous surveys, academic resources and Internet and print media indicate general trends among the citizenry that a disconnection and dissatisfaction towards government is prevalent. As a result, the South African public has extremely low levels of public participation for a nation with such a politically charged past. It has become the objective of many civil society organizations to help with the delivery of vital developmental goals, including democracy advocacy, on behalf of the citizens. This paper seeks to examine the efforts of a single NGO, the Institute for Democracy in South Africa (Idasa) through its Centre for Governance in Africa (CGA) programme, in facilitating public participation. The CGA runs programmes in the Eastern Cape province of South Africa, a region identified in numerous reports as having low levels of infrastructure and public participation. The organization engages with local partners to develop a variety of methods that encourage public participation amongst civil society organizations. These include the development of a reference toolkit for civil society organizations and the facilitation of public hearings. These steps are taken to provide the capacity and means for individuals and organizations to engage with formal government structures. The research for this paper revolves around a practicum completed with the CGA during three weeks. I used a variety of research methods, including interviews with CGA staff members, independent research on public participation in South Africa and Internet and print media sources. The conclusions section of this piece contextualizes CGA programmes within the broader scope of public participation. It is concluded that the CGA’s efforts in the Eastern Cape are still in the midst of development. There are various obstacles to be addressed to facilitate public participation, including that of logistics and capacity-building. By adopting the middle ground and creating new solutions to identified problems, the CGA programme appears to be effective in linking civil society to government structures

Custom astrocyte-mediated vasomotor responses to neuronal energy demand

Brain astrocytes regulate local blood flow and neuronal energy supply by modulating blood vessel tone in response to changes in oxygen levels

Charles Aubrey LeMaistre, MD, Oral History Interview, October 24, 2012

Major Topics Covered: Developing outpatient services Managed care crisis The Board of Visitors Research on keratinhttps://openworks.mdanderson.org/mchv_interviewsessions/1255/thumbnail.jp

Charles Aubrey LeMaistre, MD, Oral History Interview, May 24, 2012

Major Topics Covered: Personal and educational background Contributions to the anti-smoking movement Leadership of MD Anderson Multi-disciplinary care Cancer prevention at MD Andersonhttps://openworks.mdanderson.org/mchv_interviewsessions/1254/thumbnail.jp

Journal of the Southwest, 42 (1), printemps 2000, 194 p. Torres José de Jesús, El hostigamiento a « el costumbre » huichol, El Colegio de Michoacán / Universidad de Guadalajara, 2000, 338 p.

La déjà longue bibliographie huichole s’est enrichie l’année dernière de deux publications qui, pour différentes qu’elles soient dans leur objet d’étude et leur méthode d’approche, n’en sont pas moins complémentaires. À la recherche des catégories de l’entendement huichol et cora qui forment la toile de fond des huit articles du Journal of the Southwest, répond, dans le travail plus socio-économique de Torres, une critique sans concession de la politique indigéniste locale dont l’échec manife..

Alvarado Solis Neyra Patricia, Atar la vida, trozar la muerte. El sistema ritual de los mexicaneros de Durango (préface de Jacques Galinier), Universidad Michoacana de San Nicolás de Hidalgo, Morelia, 2004, 349 p., bibl., index, gloss., ill., cartes, fig., tab.

Les Mexicaneros du Sud du Durango (Mexique) posent, depuis un siècle, une série de problèmes irrésolus aux chercheurs travaillant dans l’aire géographique et culturelle nommée El Gran Nayar (du nom du chef cora qui combattit l’armée espagnole au début du xviiie siècle). Cette région, au relief particulièrement tourmenté, de la Sierra Madre occidentale, abrite au sud les Huichol (plur. : Wixaritari ; sing. : Wixarika), à l’ouest les Cora (Nayari), au nord les Tepehuan (O’dam) et les Mexicanero..