Hemisystems of small flock generalized quadrangles

In this paper, we describe a complete computer classification of the hemisystems in the two known flock generalized quadrangles of order $(5^2,5)$ and give numerous further examples of hemisystems in all the known flock generalized quadrangles of order $(s^2,s)$ for $s \le 11$. By analysing the computational data, we identify two possible new infinite families of hemisystems in the classical generalized quadrangle $H(3,q^2)$.Comment: slight revisions made following referee's reports, and included raw dat

The Lid Domain of Caenorhabditis elegans Hsc70 Influences ATP Turnover, Cofactor Binding and Protein Folding Activity

Hsc70 is a conserved ATP-dependent molecular chaperone, which utilizes the energy of ATP hydrolysis to alter the folding state of its client proteins. In contrast to the Hsc70 systems of bacteria, yeast and humans, the Hsc70 system of C. elegans (CeHsc70) has not been studied to date

Analyzing the Demand Aspect of Sex Trafficking: Addressing the Market through Legislation and Tactics

Human trafficking is a serious human rights violation. To combat human trafficking, the United States government and the State of Texas are shifting policies towards addressing the demand for commercial sex in an attempt to disrupt the trafficking “market.” In order to better understand the sex trafficking market, we examine its components, specifically: suppliers, the supply of victims, and purchasers of victims. This article also provides an overview of federal and Texas anti-trafficking laws and how these laws address demand within their texts. Finally, the article provides an overview of some common demand reduction techniques.</jats:p

A Comparison of Pitching Biomechanics and Sport Specialization in High School Pitchers

# Background The prevalence of sport specialization in high school athletes continues to rise, particularly among baseball players. Previous research has focused on the incidence of injury among specialized and non-specialized athletes but has yet to examine the level of sport specialization and pitching biomechanics. # Hypotheses/Purpose The purpose of this study was to investigate differences in pitching volume and biomechanics between low-, moderate-, and high-level specialized baseball pitchers. It was hypothesized that high-level specialized pitchers would have the most pitching volume within the current and previous years while low-level specialized pitchers would exhibit the least amount. The second hypothesis states that kinematics and kinetics commonly associated with performance and injury risk would differ between low-, moderate-, and high-level specialized pitchers. # Study Design Case-Control Study # Methods Thirty-six high school baseball pitchers completed a custom sport specialization questionnaire before participating in a three-dimensional pitching motion analysis. Sport specialization was based off current guidelines and categorized as low-, moderate-, and high-level specialized based upon self-reported outcomes. Pitchers then threw ≈10 fastballs from a mound engineered to professional specifications. Data averaged across fastballs was used for biomechanics variables. Key pitching biomechanical and pitching volume variables were compared between low-, moderate-, and high-level specialized pitchers. # Results High-level specialized pitchers were older (*p* = 0.003), had larger body mass (*p* = 0.05) and BMI (*p* = 0.045), and threw faster (*p* = 0.01) compared to low-level specialized pitchers. Pitching volume and pitching biomechanics were similar across groups. # Conclusions Pitching biomechanics were similar across groups, although high-level specialized pitchers threw with significantly higher throwing velocity compared to low-level pitchers. The low amount of pitching volume throughout the season may be responsible for the lack of additional observed differences. Further research should examine the relationship between pitching biomechanics, upper extremity strength and flexibility, and sport specialization. # Level of Evidence Level II