Quantitative analysis of the relation between entropy and nucleosynthesis in central Ca + Ca and Nb + Nb collisions

The final states of central Ca + Ca and Nb + Nb collisions at 400 and 1050 MeV/nucleon and at 400 and 650 MeV/nucleon, respectively, are studied with two independently developed statistical models, namely the classical microcanonical model and the quantum-statistical grand canonical model. It is shown that these models are in agreement with each other for these systems. Furthermore, it is demonstrated that there is essentially a one-to-one relationship between the observed relative abundances of the light fragments p, d, t, 3He, and α and the entropy per nucleon, for breakup temperatures greater than 30 MeV. Entropy values of 3.5–4 are deduced from high-multiplicity selected fragment yield data

Discrete Controller Design for A Hybrid Three Tank System

Systems in which the dynamical behaviour evolves based on the interaction between the continuous dynamics and the discrete dynamics, present in the system, are called hybrid systems. Traditionally such systems were analysed either as purely continuous or purely discrete systems. The interactions between discrete and continuous systems in today’s technological problems have become so important that hybrid modelling of such systems is called for. In this paper a discrete controller is designed for such a hybrid system. Hybrid modelling technique is used to model the hybrid three tank systems. The hybrid model is simulated in SIMULINK and STATEFLOW is used to design the discrete controller

He+ ion Irradiation on Tungsten Surface in Extreme Conditions

Higher melting point (3695K), lower sputtering yield and most importantly, lower in-bulk, and co-deposit retention at elevated temperature makes tungsten (W) as a potential candidate for plasma-facing component (PFC) in the international thermonuclear experimental reactor (ITER)-divertor. Helium ion (He+) bombardment on W can cause wide variety of microstructural evolution, such as dislocation loops, helium holes/bubbles and fibre-form nanostructures (Fuzz) etc. In this work, 100 eV He+ ion irradiation, at temperature ranges from 500°C to 1000°C, will be performed on mechanically polished mirror like W surfaces. The surface modification and compositional analysis, due to ion irradiation, will be studied using Scanning electron- (SEM) and Atomic force- (AFM) microscopy and X-ray photoelectron spectroscopy (XPS), respectively. The formation of fibre-form nanostructures was observed for temperatures in the range of 650°C to 1000°C. It was also noted that the incident ion energy and the fluence, that the material underwent, were crucial parameters for fibre-form nanostructure formation

Preferred strength and conditioning coaching leadership behaviours of NCAA Division I and II Collegiate student-athletes based on sex

The present study aimed to examine collegiate student-athletesˈpreferences of leadership behaviours in strength and conditioning (S&C) coaching and evaluate differences between athletesˈpreferred leadership behaviours based on participantsˈsex. 145 (male = 80, female = 65) National Collegiate Athletic Association (NCAA) Division I and II student-athletes aged between 18-25 years, with a mean of 3 (SD = ±1) strength and conditioning sessions per week participated in the study. Participants completed an electronic questionnaire involving the athletesˈ preference version of the Revised Leadership Scale for Strength and Conditioning (RLSSC). Summary statistics revealed that the most preferred behaviour was ˈtraining and instructionˈ, median of 4.5 (IQR = 1.0), and the least preferred was ˈautocraticˈ, median of 2.0 (IQR = 0.5). Similar results were observed for both groups. Males preferred autocratic behaviour more than females (male = 2.5, female = 2.0). Statistically significant difference was identified between groups for autocratic behaviour (p = .001). Effect sizes indicated that the magnitude of differences between groups was small or moderate, with the highest value for autocratic behaviour (d = 0.5). The observation of marginal statistically significant difference aligns with previous research, suggesting sex-related differences. However, small and moderate effect sizes indicate that differences are not practically significant enough to encourage distinct coaching approaches. This study sheds light on the preferences of coaching behaviours among student-athletes in strength and conditioning coaching. The findings emphasise the importance of positive psychosocial behaviours such as training and instruction, positive feedback, situational considerations and social support. While there were slight differences between the sexes, results suggested that both groups valued positive coaching behaviours. These findings provide implications for coaching practice and offer a basis for further research to explore leadership coaching behaviours in strength and conditioning

What America means to sixth grade children.

Thesis (Ed.M.)--Boston Universit

Improved cardiac management with a disease management program incorporating comprehensive lipid profiling.

Abstract The objective of this study was to evaluate the improved effectiveness of a disease management treatment protocol incorporating comprehensive lipid profiling and targeted lipid care based on lipid profile findings in patients with ischemic heart disease (IHD) or congestive heart failure (CHF) enrolled in a managed care plan. This retrospective cohort study, conducted over a 2-year period, compared outcomes between patients with a standard lipid profile to those evaluated with a comprehensive lipid profile. All adult members of the WellMed Medical Management, Inc. managed care health plan diagnosed with IHD or CHF, and continuously enrolled between July 1, 2006 and June 30, 2008, were included in the study. Cases were defined as those who had at least 1 comprehensive lipid test (the VAP [vertical auto profile] ultracentrifuge test) during this period (n=1767); they were compared to those who had no lipid testing or traditional standard lipid testing only (controls, n=289). Univariate statistics were analyzed to describe the groups, and bivariate t tests or chi-squares examined differences between the 2 cohorts. Multivariate regression analyses were performed to control for potential confounders. The results show that the case group had lower total costs ($4852.62 vs.$7413.18; P=0.0255), fewer inpatient stays (13.1% vs. 18.3% of controls; P=0.0175) and emergency department visits (11.9% vs. 15.6% of controls; P=0.0832). Prescription use and frequency of lipid measurement suggested improved control resulting from a targeted approach to managing specific dyslipidemias. A treatment protocol incorporating a comprehensive lipid profile appears to improve care and reduce utilization and costs in a disease management program for cardiac patients. (Population Health Management 2012;15:46-51)