Informational arithmetic in the junior high school or upper grades

Thesis (Ed.M.)--Boston Universit

The Influence of Hormones and Other Substances on Lens Regeneration in vitro

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73216/1/j.1432-0436.1980.tb01062.x.pd

Accelerated Culture: Exploring Time and Space in Cinema, Television and New Media in the Digital Age

This dissertation seeks to understand the impact of speed on the interrelation and the overlapping of the production and consumption of cinematic and televisual texts. It explores the immediacy of digital media and new economic processes, and how they are informing structures of perception, as well as lending themselves to new and different ways of seeing the moving image in the digital age. These visual expressions are evident in the changing perception of the long take; the increasing use of video gaming aesthetics and database narratives; new and variant forms of narrative and visual styles in television; and the speed of new media technology on new voices and avant-garde expressions in independent and DIY cinema (such as the Internet, personal camcorder, mobile screens, and desktop editing). Conversely, VCR, DVD, DVR devices (as well as online streaming and DVD and Blu-Ray rental sites) have transformed the consumption of the moving image. Time-shifting devices allow for halting and controlling the flow of passing time, permitting for greater textual analysis. And, reciprocally, these new perceptions of the moving image inform expressions of filmic time and space. The speed of digital media and new economic formations raise concerns about lived reality and the attenuation of time, place, and community. It brings forth questions of the waning of pastness and memory, the diminishing of critical distance, and the vanishing of slow time. I argue, however, these shifts that are occurring in cinema and television illustrate that processes of speed are not the prime determinant in the production and consumption of moving images. Rather, they are based on a contingent and open-ended model of articulation--sites where disparate elements are temporary combined, unified, and thus, practiced and lived under the ever-changing conditions of existence

Cinema of Confinement

In this book, Thomas J. Connelly draws on a number of key psychoanalytic concepts from the works of Jacques Lacan, Slavoj Žižek, Joan Copjec, Michel Chion, and Todd McGowan to identify and describe a genre of cinema characterized by spatial confinement. Examining classic films such as Alfred Hitchcock's Rope and Stanley Kubrick's The Shining, as well as current films such as Room, Green Room, and 10 Cloverfield Lane, Connelly shows that the source of enjoyment of confined spaces lies in the viewer's relationship to excess.  Cinema of Confinement offers rich insights into the appeal of constricted filmic spaces at a time when one can easily traverse spatial boundaries within the virtual reality of cyberspace

Annual Performance Reviews Of, For and By Faculty: A Qualitative Analysis of One Department's Experiences

Purpose: Although annual performance reviews and feedback are recommended for faculty development, best practices and faculty perceptions have not been documented. The authors sought to evaluate the process in one medical school department that established and has sustained an innovative review tradition for 25 years. Method: Content analysis of faculty reports and immersion/crystallization to analyze interviews. Results: Faculty reports described satisfaction and dissatisfaction; facilitators and barriers to goals; and requests for feedback, with community, collaboration and mentorship integral to all three. Interviewees emphasized practical challenges, the role of the mentor and the power of the review to establish community norms. Conclusion: Respondents generally found reviews constructive and supportive. The process informs departmental expectations and culture

Experimental investigation of flame propagation in long, narrow tubes

Combustion of premixed propane-air flames propagating in horizontal quartz tubes of small diameter (6.4 mm) was studied using high-speed photography and Particle Streak Velocimetry (PSV). Several regions of propagation were established, including an initial region of uniform propagation, a subsequent region of vibratory propagation characterized by high-amplitude axial flame oscillations and acceleration of the flame, and regions of small-amplitude oscillations during which the net propagation was nearly uniform. The regions of highest instability and acceleration were found to occur most prevalently in stoichiometric and slightly rich cases (with fuel-air equivalence ratios of 1.0 and 1.2, respectively). The effect of tube length was also studied, using lengths of 59.1 cm and 104 cm. It was found that after a period of stable, uniform propagation, every case would inevitably transition to an unstable, oscillatory mode of propagation, with the exception of lean mixtures in the shorter tube, in which flames propagated uniformly to the end. Flame structure and phenomenology were also investigated. The flames in all cases began by assuming a stable, parabolic shape during uniform propagation. During regions of instability and oscillation, a large variety of flame morphologies was observed, including highly elongated shapes, partial or complete inversion of the flame front, and flames which lost a coherent shape altogether. Finally, flow visualization was accomplished by seeding the test section with aluminum oxide (Al2O3) particles, in order to investigate the flow structures produced by the propagating flame. It was definitively established that flames propagating in tubes do produce a flow in the unburned gases ahead of the flame front. Quantitative velocity data were extracted using Particle Streak Velocimetry, which revealed that the nature of this oscillatory flow produced by the flame was unsteady and possibly 3-dimensional, defying characterization as a fully-developed laminar flow

Subthreshold Stimulation of the Human Heart

The effects of long duration subthreshold conditioning stimuli on refractory periods in the human heart have been studied in patients undergoing clinical electrophysiological studies. It has been shown that unipolar cathodal stimuli produce inhibition (lengthening of efifective refractory period), and unipolar anodal stimuli can produce either summation (shortening of effective refractory period) or inhibition, in both atrial and ventricular myocardium. Long duration conditioning stimuli produce much greater changes in refractory period than those shown in previous studies using short duration stimuli. Inhibitory effects can be produced 20 - 50 ms after the end of a subthreshold stimulus. Stimuli of shorter duration (20 ms or less) must have a greater amplitude to produce the same degree of inhibition as longer duration stimuli. The mechanism of the effect is uncertain, but may be related to sodium channel activation or inactivation by subthreshold electrical current. The spatial effects of subthreshold stimuli are very limited, inhibitory effects not being demonstrable 1 mm or more away from the site of delivery of the subthreshold pulses. Attempts to terminate reentrant arrhythmias were made using subthreshold pulses. Despite optimal mapping techniques, it was not possible to terminate any cases of atrioventricular reentrant tachycardia, atrioventricular nodal reentrant tachycardia or ventricular tachycardia using long duration cathodal conditioning stimuli. Higher amplitude pulses occasionally terminated the tachycardia, but only as a result of local capture. Thus it is likely that the spatial limitations of subthreshold stimuli preclude their routine use in the termination of tachycardias. Furthermore, the use of subthreshold stimulation as a mapping tool to identify suitable sites for catheter ablation for ventricular or supraventricular tachycardia seems to be impractical

2020 Annual Report: State of Nonprofits and Philanthropy in San Diego

The year 2020 has become one of reckoning – as a time for reflection and hindsight about how we got to this point of crisis, as well as one for envisioning a new path forward. As the pandemic shows no sign of abating, the disruption wrought by COVID-19 is broad and deep for nonprofits, their leaders, and constituents. The 2020 State of Nonprofit and Philanthropy Report synthesizes findings from three nonprofit leader surveys (including COVID-19 impacts surveys), public opinion polling, and other sources of nonprofit data to provide the most up to date and holistic picture of this essential sector. The story that emerges is both hopeful and concerning. Some nonprofits have adapted quickly by finding new ways to collaborate, leveraging capacity, and more effectively advocating together for those they serve. Yet, other nonprofits struggle to bridge digital divides and regain their financial footing. San Diego’s nonprofit sector is home to a wide variety of organizations.https://digital.sandiego.edu/npi-stateofnp/1016/thumbnail.jp