Case work with men of the United Prison Association of Massachusetts

Thesis (M.S.)--Boston University, 1941. This item was digitized by the Internet Archive

Distribution System Voltage Management and Optimization for Integration of Renewables and Electric Vehicles: Research Gap Analysis

California is striving to achieve 33% renewable penetration by 2020 in accordance with the state’s Renewable Portfolio Standard (RPS). The behavior of renewable resources and electric vehicles in distribution systems is creating constraints on the penetration of these resources into the distribution system. One such constraint is the ability of present-­‐‑day voltage management methodologies to maintain proper distribution system voltage profiles in the face of higher penetrations of PV and electric vehicle technologies. This white paper describes the research gaps that have been identified in current Volt/VAR Optimization and Control (VVOC) technologies, the emerging technologies which are becoming available for use in VVOC, and the research gaps which exist and must be overcome in order to realize the full promise of these emerging technologies

Ionization yields of fission fragments in gases

The present problem arises from a consideration of some of the experimental and theoretical results which were obtained previously, some of which will now be briefly mentioned. Fission fragment mass distributions which were derived from data obtained from double ionization chambers using argon plus carbon dioxide gases disagree with those obtained by means of radiochemical analysis of the fission products. Fission fragment velocity distributions which were also derived from double ionization chamber data disagree with those obtained from a direct measurement of velocities. Further, these double ionization chamber measurements of the total kinetic energy of fission give lower values than those estimated from calorimetric measurements. These disagreements are explained by assuming the W (average energy per ion pair) values of fission fragments stopped in an ionization chamber gas are of the order of 5 percent larger than those for alpha particles which were used as the basis to calculate fission energies. On the basis that fission fragments lost greater percentages of initial energy through elastic collisions and that recoil argon gas atoms had reduced ionization efficiencies, a theoretical calculation in terms of an ionization defect appeared to justify this viewpoint. The ionization defect. is thought to arise from energy transfer through elastic collisions and hence should be a function of the atomic mass of the gas

Influential Article Review - Understanding the Fundamentals of the Hong Kong Housing Property Market

This paper examines investments. We present insights from a highly influential paper. Here are the highlights from this paper: This study uses the intrinsic bubbles detection method to identify housing bubbles in the Hong Kong residential property market. By using sample period data from 1993 to 2019, the empirical results show evidence of intrinsic bubbles. Based on the unit root and co-integration tests, I found that there are no rational speculative bubbles in the Hong Kong residential property market. Furthermore, by using the Granger causality tests of the corresponding asymmetric VECM specification, there is no causality from lagged changes in the rental price returns to changes in the property price returns. However, there is strong evidence to show that changes in the property price index returns can Granger cause changes in the rental price index returns. For our overseas readers, we then present the insights from this paper in Spanish, French, Portuguese, and German

Probing the Effects of the Well-mixed Assumption on Viral Infection Dynamics

Viral kinetics have been extensively studied in the past through the use of spatially well-mixed ordinary differential equations describing the time evolution of the diseased state. However, emerging spatial structures such as localized populations of dead cells might adversely affect the spread of infection, similar to the manner in which a counter-fire can stop a forest fire from spreading. In a previous publication (Beauchemin et al., 2005), a simple 2-D cellular automaton model was introduced and shown to be accurate enough to model an uncomplicated infection with influenza A. Here, this model is used to investigate the effects of relaxing the well-mixed assumption. Particularly, the effects of the initial distribution of infected cells, the regeneration rule for dead epithelial cells, and the proliferation rule for immune cells are explored and shown to have an important impact on the development and outcome of the viral infection in our model.Comment: LaTeX, 12 pages, 22 EPS figures, uses document class REVTeX 4, and packages float, graphics, amsmath, and SIunit