Search

The implications for physical education of the trend toward block scheduling at the middle and high school levels are discussed. Physical educators are urged to see block scheduling as an opportunity. Suggestions for implementing the block schedule include a sample schedule for a 90-minute physical education class. Positive results of block scheduling in some North Carolina schools are noted. (DB)

The professionalization of yoga teacher-training at Kripalu Center, a yoga facility named after Swami Kripalu, not only displaces the forms of spiritual quest from which the Center emerged. It also makes its yoga culture vulnerable to the circulation and consumption of racial fetishes, or racially inscribed images that distract from, or magically veil altogether, the endemic complications and histories of racial capitalism. Kripalu Center installs professionalization procedures – including the standardization of curriculum and assessment to legitimate teachers for competition in an expanding yoga market – that make it complicit with the transmission of racial fetishes. Ultimately, professionalization becomes one vector of a larger complex I call the metaphysic of racial capital, or an underlying narrative of capitalist production plotted by various forms of racial fetishes that ensure capital’s continuous regeneration.

Subthalamic deep brain stimulation (DBS) is superior to medical therapy for the motor symptoms of advanced Parkinson's disease (PD), and additional evidence suggests that it improves refractory symptoms of essential tremor, primary generalized dystonia, and obsessive-compulsive disorder. Despite this, its therapeutic mechanism is unknown. We hypothesized that subthalamic stimulation activates the cerebral cortex at short latencies after stimulus onset during clinically effective stimulation for PD. In 5 subjects (six hemispheres), EEG measured the response of cortex to subthalamic stimulation across a range of stimulation voltages and frequencies. Novel analytical techniques reversed the anode and cathode electrode contacts and summed the resulting pair of event-related potentials to suppress the stimulation artifact. We found that subthalamic brain stimulation at 20 Hz activates the somatosensory cortex at discrete latencies (mean latencies: 1.0 ± 0.4, 5.7 ± 1.1, and 22.2 ± 1.8 ms, denoted as R1, R2, and R3, respectively). The amplitude of the short latency peak (R1) during clinically effective high-frequency stimulation is nonlinearly dependent on stimulation voltage (P < 0.001; repeated-measures analysis of variance), and its latency is less variable than that of R3 (1.02 versus 19.46 ms; P < 0.001, Levene's test). We conclude that clinically effective subthalamic brain stimulation in humans with PD activates the cerebral cortex at 1 ms after stimulus onset, most likely by antidromic activation. These findings suggest that alteration of the precise timing of action potentials in cortical neurons with axonal projections to the subthalamic region may be an important component of the therapeutic mechanism of subthalamic brain stimulation.

Deep brain stimulation (DBS) relieves disabling symptoms of neurologic and psychiatric diseases when medical treatments fail, yet its therapeutic mechanism is unknown. We hypothesized that ventral intermediate (VIM) nucleus stimulation for essential tremor activates the cortex at short latencies, and that this potential is related to the suppression of tremor in the contralateral arm. We measured cortical activity with electroencephalography in 5 subjects (seven brain hemispheres) across a range of stimulator settings, and reversal of the anode and cathode electrode contacts minimized the stimulus artifact, allowing visualization of brain activity. Regression quantified the relationship between stimulation parameters and both the peak of the short latency potential and tremor suppression. Stimulation generated a polyphasic event-related potential in the ipsilateral sensorimotor cortex, with peaks at discrete latencies beginning less than 1 ms after stimulus onset (mean latencies 0.9 ± 0.2, 5.6 ± 0.7, and 13.9 ± 1.4 ms, denoted R1, R2, and R3, respectively). R1 showed more fixed timing than the subsequent peaks in the response (P < 0.0001, Levene's test), and R1 amplitude and frequency were both closely associated with tremor suppression (P < 0.0001, respectively). These findings demonstrate that effective VIM thalamic stimulation for essential tremor activates the cerebral cortex at approximately 1 ms after the stimulus pulse. The association between this short latency potential and tremor suppression suggests that DBS may improve tremor by synchronizing the precise timing of discharges in nearby axons and, by extension, the distributed motor network to the stimulation frequency or one of its subharmonics.

This recording is a faculty performance by Jay Crone and James Bryant of Bernhard Krol's Sinfonia Sacra, Opus 56, performed Sunday, March 24, 2002, 3:00pm at Blacksburg Presbyterian Church in Blacksburg, VA

2010 U.S. Army Corrosion Summit, Huntsville, AL, 9-11 Feb. The original document contains color images.

This Strategic Research Paper (SRP) addresses the strategic issues of mentoring African-American officers, fostering more effective mentorship programs, and specifying mentorship responsibilities. It recommends ways to resolve the lack of mentorship for minority Army officers. Lack of proper mentorship could adversely affect our nation's national interests by detracting from our military dominance, reducing our security, and weakening our diplomacy. African-American officers must proactively seek out mentors of any race. Senior military leaders, regardless of race, must welcome the opportunity to mentor African-American officers. Our nation expects its military officers to be competent, technically proficient and highly trained professionals in their various military occupational specialties. Mentorship is vital for all officers, regardless of race. In order to groom future African-American officers, we must implement new and innovative mentoring programs in the 21st century.

This case study explores the influence of a changing and more diversified leadership on a struggling religiously-affiliated institution, Eureka College of Illinois. Eureka is a liberal arts institution founded by the Disciples of Christ denomination of the Church of Christ during the "Emergent Era" of college building in the mid-1800s. Historically the College has had leadership either tied to the institution by alumni status, religious affiliation or regional identity. Recently, Eureka broadened its leadership for the first time in history by bringing in a new President, numerous key administrators and several Board members with no such previous ties to the institution. This study seeks to answer the question of what influence, if any, has this changed leadership had on the process and content of leadership and governance at Eureka. It seeks to gauge the shifting impressions of key leaders at Eureka as to the effectiveness of the new leadership style and substance, as well as chronicle the progress of the college through one of its most defining times. The study divided the leadership of Eureka into three categories. Past Board members and administrators were studied, as were new Board members and administrators. In addition, particular attention was paid to existing Trustees and key administrators who remained with Eureka after the changing leadership came on board. Data was gathered through interview and documents. Numerous sources of validation were employed both with internal as well as external sources. The goal of the study was to at least find preliminary evidence as to the influences of changed leadership on institutions such as Eureka, with a view for providing a starting point for future research as additional evidence emerges. The findings that emerged from the study seem to suggest that by diversifying leadership, the Institution experienced a much more energized and proactive Board. This increased attention to governance affected all Trustees, whether

Concrete construction methods and practices influence the final in-place quality of concrete. A low permeability concrete mixture does not alone ensure quality in-place concrete. If the concrete mixture is not transported, placed and cured properly, it may not exhibit the desired durability and mechanical properties. This study investigates the in-place permeation properties of low permeability concrete bridge decks mixtures used in the Commonwealth of Virginia. Permeation properties were assessed in both the laboratory and in the field using 4-point Wenner array electrical resistivity, surface air flow (SAF), and chloride ion penetrability (ASTM C 1202-97). Laboratory test specimens consisted of two concrete slabs having dimensions of 280 x 280 x 102-mm (11 x 11 x 4-in) and twelve 102 x 204-mm (4 x 8-in) cylinders per concrete mixture. Specimens were tested at 7, 28 and 91-days. Thirteen cylinder specimens per concrete mixture underwent standard curing in a saturated limewater bath. The simulated field-curing regimes used wet burlap and plastic sheeting for 3 (3B) and 7 days (7B) respectively and was applied to both slabs and cylinder specimens. Slab specimen were tested on finished surface using the SAF at 28 and 91 days, and 4-point electrical resistivity measurements at 1, 3, 7, 14, 28 and 91 days. Compressive strength (CS) tests were conducted at 7 and 28 days. Chloride ion penetrability tests were performed at 7, 28, and 91 days. Statistical analyses were performed to assess the significance of the relationships for the following: Total charge passed and initial current (ASTM C 1202-97); 3B resistivity and 7B resistivity; Slab and cylinder resistivity; Slab resistivity and ASTM C-1202-97 (Total Charge and Initial current); and Surface Air Flow and ASTM C-1202-97. Field cast specimens, test slabs and cylinders, were cast on-site during concrete bridge deck construction. The slab dimensions were 30.5 x 40.6 x 10.2-cm (12 x 16 x 4 in.), and the cylinders were 10.

Current mathematical models, developed on straight asphalt binders, are inadequate to characterize the frequency dependence of response of polymer-modified asphalt binders. In an earlier study at Virginia Tech, mathematical models were developed to predict the storage and loss shear moduli of polymer-modified binders. However the model developed for the loss shear moduli is limited at high frequency (G" less than or equal to 10^7.5 Pa). This thesis presents a statistical modeling of loss shear modulus of polymer (random copolymers and thermoplastic block copolymers) modified binder. Data from dynamic mechanical analysis on modified binders, at temperatures between 5 and 75°C and frequencies ranging from 0.06 to 0188.5 rad/s, were reduced to dynamic master curves of moduli, and used to develop the model. Twenty-one polymer-binder blends prepared and tested earlier at Virginia Tech where included in the study. Realistic characterization of loss shear moduli values was obtained using the Gompertz statistical model. The model was validated by using mean square error of prediction (MSEP) in which a second set of frequency data was input in the model to obtain the moduli values, which were compared to the measured data of the second set. Although this model was successfully tested for shear loss modulus prediction of polymer-modified binders, caution should be exercised when it is applied, as such a model should be able to predict the storage modulus for a known phase angle.

A temperature sensor comprising a probe, infrared fibers, super-cooled detectors and their associated electronics, and a computer for determining the temperature from the output of the electronics. Photons from a heat source are collected by the infrared fibers and transmitted to the detectors where they are amplified by the electronics. A voltage is then outputted which represents measured temperature. The voltage is sampled by the computer where it is converted to temperature by use of computer algorithms., Supersedes PAT-APPL-744 046-91.

A temperature sensor comprising a probe, infrared fibers, super cooled detectors and their associated electronics, and a computer for determining the temperature from the output of the electronics. Photons from a heat source are collected by the infrared fibers and transmitted to the detectors amplifier unit where they are detected and amplified by the electronics. A voltage is then outputted which represents measured temperature. The voltage is sampled by the computer where it is converted to temperature by use of computer algorithms. Patent applications. (SDW)

Blends of Decalin with n-hexane, Tetralin with n-hexane and Tetralin with Decalin are useful as high density rocket ramjet and turbojet fuels under low temperature conditions. (Author), Supersedes PAT-APPL-294 068-72.

The Service Test of Lightweight Body Armor, Basic Vest, T66-1, was conducted by the US Army Infantry Board from 6 January 1967 to 6 May 1967. The purpose of the test was to determine the suitability of the T66-1 vest for US army use; to determine to what extent the T66-1 vest met the requirements of the LINCLOE QMR; and to determine the suitability of the T66-1 vest for parachutist's use and use with lowering devices. Four deficiencies and three shortcomings were found. The deficiencies were: Lack of durability of the T66-1 vest, all sizes of the T66-1 vest exceed the weight limitations specified in LINCLOE QMR; the T66-1 vest restricted head and body movement and breathing to a greater degree than the standard vest and consequently failed to improve, over the standard vest, the wearer's ability to perform a combat related activity; the T66-1 vest prevented parachutists from checking their entire canopies for malfunction or damage, thus creating a safety hazard to parachutists. The shortcomings were: The inadequacy of the hand grenades; inadequacy of the closure system on the bellows-type breast pockets for keeping the pockets closed; and omission of instructions in the POMI for washing the T66-1 vest. The US Army INFANTRY Board concludes that the T66-1 vest is unsuitable for US Army use until correction of the deficiencies and as many shortcomings as practicable. The T66-1 vest is unsuitable for use by parachutists until correction of the deficiency noted in Subtest No. 4, Parachute and Rappelling. The T66-1 vest is suitable for use with lowering device.

A slightly modified Technoproducts instrumented Olin-Mathieson drop- weight tester has been used to study the combustion of liquid hydrocarbon fuels with nitric acid at high pressure. The effects of the following variables on ignition and the magnitude and reproducibility of the burning rate are discussed: (1) impact energy, (2) carbon number of n-alkanes, (3) oxidizer/fuel ratio, (4) hydrocarbon structure, (5) binary fuel mixture composition, and (6) acid concentration.

The decomposition of hydrazine on Shell 405 catalyst has been studied at pressures from 500 to 5,050 psi. A novel laboratory apparatus was developed with which the propellant flow rate and reaction pressure could be remotely and independently varied and monitored. Virtually unlimited run times were possible. Significant reductions in reaction efficiency with increasing pressure were observed, but 60% ammonia dissociation efficiences were measured at 4,600 psi. An empirical equation relating the ammonia dissociation efficiency to pressure and bed length is presented. (Author)

The problems confronting the so called 'underdeveloped nations' of the world are pressing more urgently upon mankind every year. In response there is a rapidly expanding body of knowledge associated with the technical, social and economic changes which must be brought about within such countries if progress is to be assured. Because so much of the change must occur at a village level, studies of small groups have become increasingly important. This thesis is the result of such a study based on the island of Mangaia, a small and isolated Polynesian community in the Cook Islands. The aim of the study was to trace the development of commercialisation of the agricultural system from European contact to the present day, to relate the major changes to their causative factors and to assess the present degree of commercialisation and the prospects for the future. The research thus fell into two parts, historical and contemporary. The historical data was derived from three main sources, missionary reports and letters, administration records and New Zealand Government records, with a valuable ethnological study by Hiroa providing the basis of the pre-historical material. Contemporary data was collected firstly by the administration of a questionnaire to a sample population. The instrument included a battery of schedules dealing with details of the household, the head of the household, and the agricultural plantations maintained by the household. Secondly, a land use survey was carried out which concentrated upon a classification of land into that used for food crops, commercial crops and fallow land. (see Appendix I).

46 leaves ; 28 cm.

Slash Decomposition...Laboratory Tests Fail to Confirm Acceleration by Chemical Treatment

A memo from Regional Representative James G. Bryant, United States Employment Service, to all USES managers regarding travel permits for itinerant Japanese workers in the U. S. The memo describes the procedure to follow when these traveling workers apply for work permits and when a change of address occurs. The procedure ensures that these itinerant workers are able to be tracked when they move to new areas., The War Relocation Authority (WRA), together with the Wartime Civil Control Administration (WCCA), the Civil Affairs Division (CAD) and the Office of the Commanding General (OFG) of the Western Defense Command (WDC) operated together to segregate and house some 110,000 men women and children from 1942 to 1945. The collection contains documents and photographs relating to the establishment and administrative workings of the (WDC), the (WRA) and the (WCCA) for the year 1942.

As the primary focus of the Virginia Department of Transportation (VDOT) changes from highway construction to transportation maintenance, there is an increased need to extend the value derived from limited funding resources by increasing the service life of pavement rehabilitation treatments. In this regard, the development of a pavement warranty contract and a performance specification was considered in an effort to ensure that VDOT continues to deliver the highest quality pavement to the traveling public. The concept of a pavement warranty allows for a department of transportation to specify either performance criteria or materials properties that are to be met at the time of project acceptance or throughout the warranty period. These criteria are to be met through the efforts of the contractor in performing periodic maintenance or rehabilitation if required. Reports from the literature suggest that implementing warranty specifications may improve the final quality of the pavement project, reduce the state inspection forces required, and shift some of the responsibility from the department to the contractor. Other reports suggest that disadvantages may include a potential for reduced competition and higher material bid prices during the initial stages of warranty implementation. In an effort to help increase the overall quality of the roadway network and thus increase the service life of pavement resurfacings, VDOT sought to investigate the use of a warranty clause as part of an upcoming resurfacing contract. A performance-based warranty clause was developed in this pilot study to be included as part of the contract documents for a typical interstate resurfacing project. In this process, the bidding contractors would be given information about the condition of the pavement obtained from data collected through cores and the falling weight deflectometer and then the contractor would be responsible for developing the resurfacing pavement design that fulfilled the con

This archival material has been provided for educational purposes. Ball State University Libraries recognizes that some historic items may include offensive content. Our statement regarding objectionable content is available at: https://dmr.bsu.edu/digital/about