YF-17/ADEN system study

The YF-17 aircraft was evaluated as a candidate nonaxisymmetric nozzle flight demonstrator. Configuration design modifications, control system design, flight performance assessment, and program plan and cost we are summarized. Two aircraft configurations were studied. The first was modified as required to install only the augmented deflector exhaust nozzle (ADEN). The second one added a canard installation to take advantage of the full (up to 20 deg) nozzle vectoring capability. Results indicate that: (1) the program is feasible and can be accomplished at reasonable cost and low risk; (2) installation of ADEN increases the aircraft weight by 600 kg (1325 lb); (3) the control system can be modified to accomplish direct lift, pointing capability, variable static margin and deceleration modes of operation; (4) unvectored thrust-minus-drag is similar to the baseline YF-17; and (5) vectoring does not improve maneuvering performance. However, some potential benefits in direct lift, aircraft pointing, handling at low dynamic pressure and takeoff/landing ground roll are available. A 27 month program with 12 months of flight test is envisioned, with the cost estimated to be $15.9 million for the canard equipped aircraft and$13.2 million for the version without canard. The feasiblity of adding a thrust reverser to the YF-17/ADEN was investigated

A simple method for the Kramers-Kronig analysis of reflectance spectra measured with diamond anvil cell

When the optical reflectance spectrum of a sample under high pressure is studied with a diamond anvil cell, it is measured at a sample/diamond interface. Due to the large refractive index of diamond, the resulting reflectance Rd(w) may substantially differ from that measured in vacuum. To obtain optical constants from Rd(w), therefore, the usual Kramers-Kronig (KK) transform cannot be straightforwardly applied, and either a spectral fitting or a modified KK transform has been used. Here we describe an alternative method to perform KK analysis on Rd(w). This method relies on the usual KK transform with an appropriate cutoff and extrapolation to Rd(w), and may offer a simpler approach to obtain infrared conductivity from measured Rd(w).Comment: 6 pages, 2 figures, to appear in the Proceedings of 6th WIRMS Conference (J. Phys. Conf. Ser.

Sports Counseling Preparation at CACREP Institutions: An initial Analysis

Interest in the field of sports counseling is growing in both mental health and athletics communities. Specialized sports counseling preparation has been emphasized in order to work efficiently with athletes. However; it is not clear whether counseling programs have the curriculum, faculty, or departmental support for those interested in becoming sports counselors. This survey of 63 counseling programs accredited by the Council for Accreditation of Counseling and other Related Educational Programs (CACREP) examined the availability of training opportunities for counseling students interested in specialization in sports counseling and the attitudes of the counseling faculty toward sports counseling. Findings reveal a lack of training opportunities in sports counseling at CACREP accredited institutions and only moderate interest by faculty in establishing such programs

Developing Career Development Profiles of Student-Athletes: A Comparison with Non-Athletes

Student-athletes' and non-athletes' scores on several career-related assessments were compared. During the 1990-91 academic year at a medium-sized, state-supported university in the South, a sample of 41 student-athletes (83% males and 17% females) and 178 non-athletes (29% males and 71% females) completed the Values Scale (Super & Nevill, 1985b), Career Development Inventory (Super, Thompson, Lindeman, Jordaan, & Myers, 1981), and Salience Inventory (Super & Nevill, 1985a). Completion of these instruments was required for a semester-long, three-credit course in career/life planning. The student-athletes were non-revenue scholarship athletes representing a NCAA Division II institution in soccer, basketball, and tennis. Both groups contained students representing all class ranks, with a majority in both groups being white (93% of the student-athlete group and 69% of the non-athlete group. Results of two-way ANOVAs indicated that student-athletes highly value physical activity and spend more time in leisure activities than non-athletes. Only one significant gender effect was found: females had a higher score on the combined knowledge scale (M = 100.29) than males (M = 85.16) (F(1, 138) = 8.43, p < .006). The combined knowledge scale score is a linear combination of scores in decision-making and world-of-work information. This result indicates that females may be better able to apply career development principles to decision-making scenarios as well as demonstrate more knowledge of what it takes to get a job and succeed. No differences in career maturity scores were found. Implications for programming to accommodate the special needs of student-athletes are discussed

College Student-Athletes in Career Development: A Comparison of Career Decision-Making, Role Salience, and Values

Student athletes are faced with a variety of struggles not encountered by their non-athlete peers. Chief among these struggles are the development of a personal identity, socialization, and self worth that is separate and distinct from their athletic lives. Decisions regarding career choices arerelated to developmental success in identity formation and self-efficacy. Student-athletes at NCAA Division I schools have been found to be significantly different from non-athletes in their readiness to make career decisions.This investigation explored whether similar deficiencies existed with student-athletes at a small private NCAA Division II university. This study compared career decision-making, role salience, and values of student-athletes (n=53) and non-athletes (n=51). A demographic form and three instruments were used to collect the data. The Salience Inventory (SI), the Values Scale (VS), and the Career Development Inventory (CDI) were used. The data indicated that athletes and non-athletes at a Division II university tend to be similar in the areas ofcareer decision-making, planning, and role salience. Athletes did project higher life style and prestige scores. Higher life style scores indicate that athletes tended to value the opportunity to plan one's own activities and to live the way one wants to. Many athletes feel most of their time is controlled by others (e.g., coaches, practice, classes), as a result, time for leisure is a premium. Elevated prestige scores indicate that athletes value being acknowledged for their skills more than non-athletes. The prestige score may highlight a desire by athletes to not only be acknowledged for their athletic ability but appreciated for their contribution, role, and sacrifice to the team. The authors recommend athletes create a portfolio for career development

The Student-Athlete Life/Career Portfolio: A Multifaceted Approach to Life and Career Development

The student-athlete life/career portfolio is a process that developed reflective practice and allowed for an in-depth portrayal of the experiences of each person as an individual and an athlete. The contents of the life/career portfolio provided a unique document that is far more illustrative of an individual's abilities and achievement sthan the traditional resume

Temperature dependence of the excitation spectrum in the charge-density-wave ErTe3_3 and HoTe3_3 systems

We provide optical reflectivity data collected over a broad spectral range and as a function of temperature on the ErTe$_3$ and HoTe$_3$ materials, which undergo two consecutive charge-density-wave (CDW) phase transitions at $T_{CDW1}$= 265 and 288 K and at $T_{CDW2}$= 157 and 110 K, respectively. We observe the temperature dependence of both the Drude component, due to the itinerant charge carriers, and the single-particle peak, ascribed to the charge-density-wave gap excitation. The CDW gap progressively opens while the metallic component gets narrow with decreasing temperature. An important fraction of the whole Fermi surface seems to be affected by the CDW phase transitions. It turns out that the temperature and the previously investigated pressure dependence of the most relevant CDW parameters share several common features and behaviors. Particularly, the order parameter of the CDW state is in general agreement with the predictions of the BCS theory

Pressure-tuning of the c-f hybridization in Yb metal detected by infrared spectroscopy up to 18 GPa

It has been known that the elemental Yb, a divalent metal at mbient pressure, becomes a mixed-valent metal under external pressure, with its valence reaching ~2.6 at 30 GPa. In this work, infrared spectroscopy has been used to probe the evolution of microscopic electronic states associated with the valence crossover in Yb at external pressures up to 18 GPa. The measured infrared reflectivity spectrum R(w) of Yb has shown large variations with pressure. In particular, R(w) develops a deep minimum in the mid-infrared, which shifts to lower energy with increasing pressure. The dip is attributed to optical absorption due to a conduction c-f electron hybridization state, similarly to those previously observed for heavy fermion compounds. The red shift of the dip indicates that the $c$-$f$ hybridization decreases with pressure, which is consistent with the increase of valence.Comment: 2 pages, to appear in J. Phys. Soc. Jpn. Supp