Co-visibility and pedagogy: innovation and challenge at the High Museum of Art

Museum space is arranged not only to present but also to help understand displays. Patterns of visitor movement and the co-visibility of displays act as pedagogical media. This paper traces the recent history of the interior of the High Museum of Art, in Atlanta, and identifies radical transformations in the interaction between architectural setting, exhibition design and curatorial intention. The original 1983 second-floor layout, designed by Meier, created ‘rooms within rooms’, privileged cross views and provided a web of vistas cutting through spatial layers of displays and meandering paths of movement, even as the structural grid notated an abstract overall order. Thus, it supported comparisons and a multiplicity of points of view rather than a rigid classificatory scheme. Also, it challenged focused frontal viewing and hence traditional curatorial approaches.

The 1997 second-floor layout, by Scogin and Elam, masterfully deployed a formal exhibition language that resonated with Meier's architecture in order to implement a different curatorial programme, based on well-defined sequences of movement and controlled visual frames. The aim was not to impose an historical or stylistic classification, but rather to confront visitors with orchestrated assemblies of displays linking art to themes such as life, faith, the human figure or the city. In 2003, Lord Aeck and Sargent designed a new layout which reproduced the original ‘rooms within rooms’ implemented by Meier, whilst reducing the intricacy of internal subdivision and promoting less complex vistas. The evolution of interiors in Meier's original building stands in contrast to the simpler layout of Piano's 2005 extension for the High where architecture assumes the rôle of a more neutral and elegant background to the art works. These contrasts, their programmatic generators and their experiential consequences are documented and analysed as a case study in the pedagogical functions of museum space.     

Metal-Ion Type Effect on the Crystal Structure and Optical Properties of 2,2′-bipyridine Complexes of Pb(II) and Cd(II)

To investigate the effect of metal ion type on the crystal structure and optical and thermal behaviors of coordination compounds, two homometal and one heterometal 2,2′-bipyridine complexes of Pb(II) and Cd(II) have been synthesized and characterized by elemental analysis, PXRD, FT-IR and single crystal X-ray diffraction. Crystal structure analysis of heterometal coordination polymer, [Pb₂Cd(2,2′-bipy)₄(NO₃)₆]_n, displays the attendance of a centrosymmetric 1D coordination polymer that crystallizes in the triclinic system with the space group of \({\text{p}}_{1}^{ - }\). Thermal behavior of prepared coordination compounds was examined under air atmosphere by thermogravimetric analysis. The study of optical properties of compounds showed that metal ion type of coordination compounds is influential on their photophysical properties. Moreover, heterometal coordination polymer was doped into a PVK:PBD blend in two different concentrations as a light emitting material in the fabrication of two organic light-emitting diodes.     

Oxidation-precipitation of magnetic Fe3O4/AC nanocomposite as a heterogeneous catalyst for electro-Fenton treatment

Abstract

The oxidation-precipitation method was used for the synthesis of Fe₃O₄/AC. The characterization of the catalyst was accomplished by XRD, FT-IR, FE-SEM, BET, and VSM techniques. The obtained results indicated that magnetite nanoparticles were successfully prepared with cubic spinel structures and uniform distribution on the surface of activated carbon by the oxidation-precipitation method. The effect of operating parameters was evaluated to determine the optimum operating condition for the electro-Fenton (EF) removal of catechol as a phenolic pollutant model. At the optimum operating conditions (pH 3, Fe₃O₄/AC: 0.9?g L^?1, Catechol: 8.0?×?10^?4?mol L^?1 at I: 120?mA), the catechol and COD removal reached 98.2 and 76.1% in 120?min, respectively. Only 2.1% of ferrous and 3.44% of ferric ions were leached into the solution. Regarding the results from utilization of oxidant scavengers (isopropanol and BQ), it can be inferred that hydroxyl radical (responsible for 57% catechol removal) and superoxide anion radical (responsible for 40% catechol removal) is the main oxidants in acidic (pH 3) and basic (pH 10) conditions, respectively. The kinetics of EF removal of catechol was studied and the rate constant for the pseudo-first-order kinetic model was found to be 3.37?×?10^?2min^?1 (R² = 0.9924). The GC-MS analysis was carried out to detect the intermediate products and a possible degradation mechanism was proposed. The reusability of Fe₃O₄/AC was examined for six cycles. It can be concluded that Fe₃O₄/AC is an applicable ultimate catalyst for EF removal of organic pollutants.     

Perceptions of serendipity: Career paths of prominent academic women in counseling psychology.

Consensual qualitative research was used to investigate the impact of chance events on the career choices of prominent academic women in counseling psychology and to examine the contextual factors surrounding the chance events. The results suggest that chance events affected career choices most often by changing women's career paths altogether or by altering their self-concepts. The results also suggest that both internal characteristics (e.g., ability to take risks, self-confidence, etc.) and external factors (e.g., a strong support system, few external barriers, etc.) helped women take advantage of chance opportunities. The implications of integrating the concept of serendipity into our existing understanding of career development is discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Inpatient rehabilitation diabetes consult service: A rehabilitation psychology approach to assessment and intervention.

Problem: Diabetes clinical practice recommendations call for assessment and intervention on diabetes self-management during inpatient hospitalization. Although diabetes is prevalent in inpatient rehabilitation settings, diabetes self-management has not traditionally been a focus of inpatient rehabilitation psychology care. This is because diabetes is often a secondary diagnosis when an individual is admitted to rehabilitation for an acute event. Objectives: The authors provide a rationale for a role for rehabilitation psychologists in assessing and intervening on the psychosocial, behavioral, and functional self-management needs of individuals with diabetes within the rehabilitation setting. The development of a rehabilitation psychology Inpatient Rehabilitation Diabetes Consultation Service is described. Theoretical and empirical bases for compilation of the assessment and intervention materials are provided. Format and implementation of the service on a university-affiliated inpatient rehabilitation unit is described, with special consideration given to professional issues faced by rehabilitation psychologists and teams. Results: A flexible consultation model was implemented using a guided diabetes psychosocial assessment with brief educational handouts addressing selected key topics (i.e., hyperglycemia, hypoglycemia, blood sugar monitoring, nutrition, physical activity, medication, and, A1C and average blood sugar). The consultation service was feasible and well-accepted by treated individuals and the rehabilitation team. Conclusions: Rehabilitation psychologists are uniquely positioned to address the functional, psychosocial, and behavioral needs of individuals with diabetes. With further research to assess clinical outcomes, this approach may further address practice recommendations for inpatient diabetes care. Moreover, such a diabetes consultation model may be useful on an outpatient rehabilitation basis as well. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Improved mass spectrometric characterization of protein glycosylation reveals unusual glycosylation of maize-derived bovine trypsin

Although bottom-up proteomics using tryptic digests is widely used to locate post-translational modifications (PTM) in proteins, there are cases where the protein has several potential modification sites within a tryptic fragment and MS(2) strategies fail to pinpoint the location. We report here a method using two proteolytic enzymes, trypsin and pepsin, in combination followed by tandem mass spectrometric analysis to provide fragments that allow one to locate the modification sites. We used this strategy to find a glycosylation site on bovine trypsin expressed in maize (TrypZean). Several glycans are present, and all are attached to a nonconsensus N-glycosylation site on the protein.