Ion mass spectrometer experiment for ISIS-2 spacecraft

The International Satellite for Ionospheric Studies (ISIS) program of NASA was the longest duration program in NASA history. A number of satellites were flown under this program, the last being called ISIS-2, which was launched on April 1, 1971 and operated successfully for over 13 years. An experiment called the Ion Mass Spectrometer (IMS) was flown on the ISIS-2 spacecraft. It operated for 10 years providing a large data base of positive ion composition and ion flow velocities along the orbit of the satellite, the latter being circular at 1400 km with a 90 degree inclination. The data were processed and reside in the National Space Sciences Data Center

Development of a miniature mass analyzer and associated instrumentation for improved capabilities in the analysis of low energy plasmas from a rocket or satellite platform

The University of Texas at Dallas (UTD) Center for Space Sciences (CSS) has designed, developed, and fabricated three miniature mass spectrometers and their associated instrumentation in fulfillment of a NASA contract. The ion mass spectrometer analyzers furnished under this contract were modeled after a unit developed during a previous NASA grant. Three assemblies are described: (1) the magnetic sector; (2) the ion detector; and (3) the amplifier and power supply

The study of pressure measurement techniques and devices in the range of 10(exp -1) to 10(exp -5) torr (2 millipsi to 0.2 micropsi)

The atmospheric pressure range was studied in a region where conventional pressure sensing devices do not provide meaningful measurements. However, a hot filament gauge was developed and miniaturized which will measure the pressure in the 10(exp -1) to 10(exp -5) torr (2 millipsi to 0.2 micropsi) region, hence the name Micropsi gauge. Laboratory studies were made comparing the currently available devices with the newly developed miniature low power 'Micropsi' pressure sensor

Results of a study of the stability of cointegrating relations comprised of broad monetary aggregates

There is strong evidence of a stable “money demand” relationship for MZM and M2 through the 1990s. Though the M2 relationship breaks down somewhere around 1990, evidence has been accumulating that the disturbance is well characterized as a permanent upward shift in M2 velocity that began around 1990 and was largely over by 1994. This paper’s results support the hypothesis that households permanently reallocated a portion of their wealth from time deposits to mutual funds. This reallocation may have been induced by depository restructuring, but it could also be explained by appropriately measured opportunity cost.Demand for money

Identifying Cyberbullying, Connecting with Students: The Promising Possibilities of Teacher-Student Social Networking

Cyberbullying, an emergent problem that most students face but few report, negatively affects students’ academic and personal development, disrupts the school environment, and usually peaks around middle school. The Association of Middle Level Education (AMLE) suggests that successful middle schools should, among other things, ensure every student has an adult advocate to guide academic and personal development in an inviting, safe, inclusive, and supportive school environment. The Olweus Anti-Bullying Program denotes educators’ proactive intervention must first follow recognition of students’ misbehaviors and both identification and supervision of problematic school contexts. Without such recognition, identification, and supervision, educators’ proactive interventions are likely impossible. This article offers social networking to educators as a method to identify and, to the best extent possible, supervise cyberbullying. This identification and supervision method merges with youth culture and coheres with AMLE’s and Olweus’ philosophies to positively influence the school’s environment and facilitate students’ intellectual and personal development. However, it contrasts sharply with various school districts’ approaches to confronting cyberbullying. The authors intend for this premise to spark interest in potential pilot studies whereby educators conscientiously and deliberately construct a path to proactive intervention

Identifying Cyberbullying, Connecting with Students: The Promising Possibilities of Teacher-Student Social Networking

Cyberbullying, an emergent problem that most students face but few report, negatively affects students’ academic and personal development, disrupts the school environment, and usually peaks around middle school. The Association of Middle Level Education (AMLE) suggests that successful middle schools should, among other things, ensure every student has an adult advocate to guide academic and personal development in an inviting, safe, inclusive, and supportive school environment. The Olweus Anti-Bullying Program denotes educators’ proactive intervention must first follow recognition of students’ misbehaviors and both identification and supervision of problematic school contexts. Without such recognition, identification, and supervision, educators’ proactive interventions are likely impossible. This article offers social networking to educators as a method to identify and, to the best extent possible, supervise cyberbullying. This identification and supervision method merges with youth culture and coheres with AMLE’s and Olweus’ philosophies to positively influence the school’s environment and facilitate students’ intellectual and personal development. However, it contrasts sharply with various school districts’ approaches to confronting cyberbullying. The authors intend for this premise to spark interest in potential pilot studies whereby educators conscientiously and deliberately construct a path to proactive intervention

Space Applications of Mass Spectrometry

Mass spectrometers have been involved in essentially all aspects of space exploration. This chapter outlines some of these many uses. Mass spectrometers have not only helped to expand our knowledge and understanding of the world and solar system around us, they have helped to put man safely in space and expand our frontier. Mass spectrometry continues to prove to be a very reliable, robust, and flexible analytical instrument, ensuring that its use will continue to help aid our investigation of the universe and this small planet that we call home

Effects of neighborhood disadvantage on problem gambling and alcohol abuse

Background and aims: Based on social disorganization theory, the present study examined the effects of neighborhood disadvantage on gambling behaviors and problems as well as on alcohol use and abuse. Methods: Findings were based on a combined sample of two representative U.S. telephone surveys of gambling and substance use. One survey (n = 2,631) included adults 18 years and older and the second survey (2,274) included young people aged 14–21 years old. Results: Neighborhood disadvantage had a highly significant effect on problem gambling over and above the significant individual effects of gender, age, race/ethnicity and socioeconomic status. Alcohol abuse did not show the same relationship to neighborhood disadvantage as did problem gambling. Furthermore, when neighborhood disadvantage was high and individual socioeconomic status was low, the highest levels of problem gambling were observed. Conclusions: This study provides strong evidence for the effects of neighborhood ecology on the occurrence of problem gambling