The “right kind of telling”: knowledge building in the academic design studio

Studio-based instruction, as traditionally enacted in design disciplines such as architecture, product design, graphic design, and the like, consists of dedicated desk space for each student, extended time blocks allocated to studio classes, and classroom interactions characterized by independent and group work on design problems supplemented by frequent public and individual critiques. Although the surface features and pedagogy of the studio have been well-documented, relatively little attention has been paid to student and teacher participation structures through which design knowledge is co-produced among instructors and students within the studio. The purpose of this study was to investigate the nature of faculty?Cstudent interactions through which students learn to think and act as designers. To that end, we have collected and analyzed ethnographic data from five studio classrooms across three design disciplines (architecture, industrial design, and human?Ccomputer interaction). Our findings provide insight as to the ways that dialogue??the ??right kind of telling????and particular social practices in the studio support students as they learn to solve ill-structured design problems while being simultaneously inducted into practices that reflect the professional world of their discipline. In each of the studio classrooms, the instructors were able to create an environment where students and faculty practiced reflection-in-action and listening-in as a form of intentional participation, design knowledge was conveyed through modeling and meta-discussions, and focused assignments and in-progress critiques enhanced opportunities for the individual and group processes through which design knowledge was co-constructed in these studio classrooms.     

“Slaves to a Debt”: Race,Shame, and the Anti-Obama Jeremiad

This essay examines the language of shame and honor in the jeremiads of Barack Obama and the anti-Obama right. The jeremiad imagines America at a crossroads between the path of shame—where we become “a story and a by-word through the world”—and the path of honor. A brief history of the American jeremiad shows that the anti-slavery jeremiad transformed its dynamic of shame from an instrument of socialization into an indictment of hypocrisy against the defenders of slavery. Paradoxically, in the Age of Obama it is the anti-Obama right that has appropriated this rhetorical innovation of the anti-slavery jeremiad.     

The relationship between motor skills difficulties and self-esteem in children and adolescents: a systematic literature review

Research findings indicate that there appears to be a relationship between poor motor skills and self-esteem, however this relationship is ambiguous. This review examines the effects of poor motor skills on global and/or domain specific self-esteem. Four databases, Google Scholar and the Manchester Online library were searched for articles focusing on motor skills and self-esteem in children and adolescents. A date range of between January 2000 and July 2015 was specified to ensure sufficient overlap with the most recent meta-analysis. From the database searches, 26 potentially relevant studies were identified and from these 26, eight studies met the inclusion criteria. A synthesis of the studies reveals that there appears to be a relationship between motor skills and self-esteem, however this relationship is complex and likely to vary depending on age, gender and co-morbidity. Implications for educational psychology practice are discussed.     

Solution pH change in non-uniform alternating current electric fields at frequencies above the electrode charging frequency

AC Faradaic reactions have been reported as a mechanism inducing non-ideal phenomena such as flow reversal and cell deformation in electrokinetic microfluidic systems. Prior published work described experiments in parallel electrode arrays below the electrode charging frequency (f_c), the frequency for electrical double layer charging at the electrode. However, 2D spatially non-uniform AC electric fields are required for applications such as in plane AC electroosmosis, AC electrothermal pumps, and dielectrophoresis. Many microscale experimental applications utilize AC frequencies around or above f_c. In this work, a pH sensitive fluorescein sodium salt dye was used to detect [H⁺] as an indicator of Faradaic reactions in aqueous solutions within non-uniform AC electric fields. Comparison experiments with (a) parallel (2D uniform fields) electrodes and (b) organic media were employed to deduce the electrode charging mechanism at 5 kHz (1.5f_c). Time dependency analysis illustrated that Faradaic reactions exist above the theoretically predicted electrode charging frequency. Spatial analysis showed [H⁺] varied spatially due to electric field non-uniformities and local pH changed at length scales greater than 50 μm away from the electrode surface. Thus, non-uniform AC fields yielded spatially varied pH gradients as a direct consequence of ion path length differences while uniform fields did not yield pH gradients; the latter is consistent with prior published data. Frequency dependence was examined from 5 kHz to 12 kHz at 5.5 V_pp potential, and voltage dependency was explored from 3.5 to 7.5 V_pp at 5 kHz. Results suggest that Faradaic reactions can still proceed within electrochemical systems in the absence of well-established electrical double layers. This work also illustrates that in microfluidic systems, spatial medium variations must be considered as a function of experiment time, initial medium conditions, electric signal potential, frequency, and spatial position.