Earth-based lunar atmosphere investigation Final report

Instrumentation and results of earth-based spectrometric identification of lunar atmospheric constituents in visible regio

Melting behaviour of waste glass cullet briquettes in soda-lime-silica container glass batch

The melting behaviour of representative container glass batch with and without the addition of 15wt % briquettes produced from waste cullet fine particles was investigated in the context of reducing both waste and glass melting energies. Carbonate raw material decomposition and reactions during melting were studied by DTA-TGA-MS. The decomposition kinetics of two batches, representing typical container glass batches with 0% and 15% briquette additions, were calculated by transformation degree based on the Ginstling-Brounstein and Arrhenius equations. High temperature phase transitions and fractions of silica reaction in each batch were obtained from X-ray diffractometry (XRD). The briquette additions accelerated the decomposition reactions and the silicate reaction kinetics by decreasing the activation energy for carbonate decomposition. Silica sand in the batch was shown to melt at lower temperatures with the addition of briquettes. Batch melting processes at different temperatures and briquette melting on top of the molten glass at high temperatures, were investigated by macroscopic investigations of sample cross-sections post-melting. The positive effects of briquette additions to container glass batches, in terms of increased melting rate and reduced batch reaction and decomposition temperatures, are supported by the results of this study

Functions of Aggression and Peer Victimization in Elementary School Children: The Mediating Role of Social Preference

This study examined the longitudinal associations among functions of aggression, social preference, and peer victimization. Participants were 492 children (249 girls, 227 boys) in grades 2-5. Proactive and reactive aggression was assessed via a self-report measure and indices of social preference and peer victimization were assessed via a peer nomination inventory. Data was collected during the fall and spring of two academic years. Results suggest that the relation between aggression, social preference, and peer victimization varied by the function of aggression and gender. For girls, reactive aggression was a significant negative predictor of social preference. Findings also revealed social preference mediated the relation between reactive aggression and peer victimization for girls. This pathway did not hold for boys. There was some evidence that proactive aggression was negatively associated with peer victimization, but only for girls. Findings from the current study suggest social preference may be a key mechanism through which reactive aggression is associated with future victimization for girls. Boys’ aggression was not related to subsequent peer victimization. Future research and intervention efforts should consider gender differences and the function of aggression when investigating children’s peer victimization experiences

Minding the Gap in Domestic Violence Legislation: Should States Adopt Course of Conduct Laws?

In the United States, there is a gap between the way that sociologists, psychologists, legal scholars, and advocates define domestic violence and the way that criminal laws define domestic violence. Experts largely agree: domestic violence occurs when a partner exercises continuous power and control over the other. In this view, domestic violence occurs via a pattern of abusive behaviors that unfolds over time, and its manifestations include both physically-violent and emotionally-abusive behaviors. In contrast, criminal statutes throughout the United States continue to conceptualize domestic violence as single acts of physical violence or threats of physical violence. During the past several years, England and Wales, Ireland, and Scotland have passed laws that have attempted to bridge this gap in their own societies. The enactment of these laws abroad—and the fact that legislatures are considering similar laws in other jurisdictions, including the United States—provides a timely opportunity to analyze whether state legislatures should adopt similar laws here. This Comment argues that states should adopt domestic violence laws similar to the ones passed abroad. First, it explains why this gap between the criminal law and other understandings of domestic violence emerged, what it looks like in practice, and what its consequences are for victims throughout their experience with the criminal justice system. Second, it draws attention to the ways in which both the legislature and the criminal justice system are growing increasingly comfortable with defining and prosecuting crimes as courses of conduct. Based on the conduct covered and the harm addressed under these already existing laws, introducing similar laws in the domestic violence context would be a natural next step. Third, it evaluates course-of-conduct laws recently passed in Scotland, Ireland, and England and Wales that have attempted to close this gap. Finally, it recommends that states pass course-of-conduct domestic violence statutes, using Scotland’s law as a model

Institutionalizing Environmental Dispute Resolution Approaches Within Natural Resource Agencies: Lessons from the U.S. Forest Service

Also PCMA Working Paper #35.http://deepblue.lib.umich.edu/bitstream/2027.42/51251/1/485.pd

Guest Artist Recital: Lesley Manring, Soprano; July 31, 1977

Centennial East Recital HallSunday AfternoonJuly 31, 19772:00 p.m

Institutionalizing Conflict Management Alternatives

Also PCMA Working Paper #7.http://deepblue.lib.umich.edu/bitstream/2027.42/51116/1/348.pd

Structural studies of thermally stable, combustion-resistant polymer composites

Composites of the industrially important polymer, poly(methyl methacrylate) (PMMA), were prepared by free-radical polymerization of MMA with varying amounts (1–30 wt. %) of sodium dioctylsulfosuccinate (Aerosol OT or AOT) surfactant added to the reaction mixture. The composites with AOT incorporated show enhanced resistance to thermal degradation compared to pure PMMA homopolymer, and micro-cone combustion calorimetry measurements also show that the composites are combustion-resistant. The physical properties of the polymers, particularly at low concentrations of surfactant, are not significantly modified by the incorporation of AOT, whereas the degradation is modified considerably for even the smallest concentration of AOT (1 wt. %). Structural analyses over very different lengthscales were performed. X-ray scattering was used to determine nm-scale structure, and scanning electron microscopy was used to determine μm-scale structure. Two self-assembled species were observed: large phase-separated regions of AOT using electron microscopy and regions of hexagonally packed rods of AOT using X-ray scattering. Therefore, the combustion resistance is observed whenever AOT self-assembles. These results demonstrate a promising method of physically incorporating a small organic molecule to obtain a highly thermally stable and combustion-resistant material without significantly changing the properties of the polymer

An affordable automotive hybrid transmission

It is estimated that there are more than 70 automobile models on the road today that use hybrid transmission technology for improving the efficiency of automobile transportation. Most of these transmissions are of the electric hybrid type and are expensive to purchase, and costly to maintain. The original purchase price for a vehicle with an electric hybrid transmission is approximately $8k more than a comparable vehicle without a hybrid transmission and the replacement cost for electric batteries is about$3k every five to ten years with an associated disposal problem for the batteries themselves. This situation has resulted in hybrid vehicle technology being accessible to the few who are able to afford the vehicles and who normally consider themselves to be "energy buffs". By and large, hybrid vehicle technology has not been made accessible to the common automobile owner. This technology is aimed at developing a hybrid vehicle transmission that: 1) reduces the first time buying cost of the vehicle by thousands of dollars, and 2) eliminates the need for replacing expensive and environmentally dangerous batteries thus reducing maintenance costs. It so happens that this technology also eliminates conventional disc brakes that wear out and need replacement. Furthermore, this technology eliminates the reverse gear in the mechanical transmission path thus reducing the cost associated with designing and building this part of the mechanical transmission. This technology will rapidly expand the use of energy-efficient automotives as an affordable hybrid-transmission will be made available for every consumer. With over 60 million vehicles produced every year worldwide this idea will have a tremendous impact on worldwide energy consumption and the environment

Modeling and Designing a Hydrostatic Transmission With a Fixed-Displacement Motor

This study develops the dynamic equations that describe the behavior of a hydrostatic transmission utilizing a variable-displacement axial-piston pump with a fixed-displacement motor. In general, the system is noted to be a third-order system with dynamic contributions from the motor, the pressurized hose, and the pump. Using the Routh-Hurwitz criterion, the stability range of this linearized system is presented. Furthermore, a reasonable control-gain is discussed followed by comments regarding the dynamic response of the system as a whole. In particular, the varying of several parameters is shown to have distinct effects on the system rise-time, settling time, and maximum percent-overshoot