The inter- and intrarater reliability and agreement for field-based assessment of scapular control, shoulder range of motion, and shoulder isometric strength in elite adolescent athletes

Objectives To investigate the intra- and interrater reliability and agreement for field-based assessment of scapular control, shoulder range of motion (ROM), and shoulder isometric strength in elite youth athletes. Design Test-retest reliability and agreement study. Setting Eight blinded raters (two for each assessment) assessed players on field during two testing sessions separated by one week. Participants 162 elite youth handball players with or without a history of previous shoulder pain within the preceding six months. Main outcome measures Kappa (κ) and prevalence-adjusted bias-adjusted kappa (PABAK) coefficients for scapular control reliability, and 95% limits of agreement (LOA) for ROM and strength agreement. Results Scapular control demonstrated substantial to almost perfect reliability (κ 0.67 to 0.84, PABAK from 0.68 to 0.88). Mean strength values ranged from 0.9 N/kg to 1.6 N/kg, and LOAs ranged from −0.7 N/kg to 0.8 N/kg. Rotational strength revealed additionally systematic bias between and within rater. No or acceptable systematic bias were evident for ROM and abduction strength measures. Mean values and LOAs for ROM ranged between 39.9° to 52.3°, and from −12.6° to 9.9°, respectively. Conclusions Scapular control and ROM can be assessed on the field with acceptable reliability. The threshold for reliable measurements of isometric strength using handheld-dynamometers is high

Efficient and formal generalized symbolic execution

Programs that manipulate dynamic heap objects are difficult to analyze due to issues like aliasing. Lazy initialization algorithm enables the classical symbolic execution to handle such programs. Despite its successes, there are two unresolved issues: (1) inefficiency; (2) lack of formal study. For the inefficiency issue, we have proposed two improved algorithms that give significant analysis time reduction over the original lazy initialization algorithm. In this article, we formalize the lazy initialization algorithm and the improved algorithms as operational semantics of a core subset of the Java Virtual Machine (JVM) instructions, and prove that all algorithms are relatively sound and complete with respect to the JVM concrete semantics. Finally, we conduct a set of extensive experiments that compare the three algorithms and demonstrate the efficiency of the improved algorithms

Everyday encounters with context-aware computing in a campus environment

Abstract. As ubiquitous computing technologies mature, they must move out of laboratory settings and into the everyday world. In the process, they will increasingly be used by heterogeneous groups, made up of individuals with different attitudes and social roles. We have been studying an example of this in a campus setting. Our field work highlights the complex relationships between technology use and institutional arrangements – the roles, relationships, and responsibilities that characterize social settings. In heterogeneous groups, concerns such as location, infrastructure, access, and mobility can take on quite different forms, with very different implications for technology design and use.

Electroweak measurements in electron–positron collisions at w-boson-pair energies at lep

Contains fulltext : 121524.pdf (preprint version ) (Open Access

Alzheimer's disease risk polymorphisms regulate gene expression in the ZCWPW1 and the CELF1 loci

10.1371/journal.pone.0148717PLoS ONE112e014871

ALEPH: A detector for electron-positron annihilations at LEP

The design, construction and performace of a large 4pi solid angle detector with soleinoidal magnet is described. The detector serves to study electron-positron annihilation processes at a centre of mass energy between 80 and 200 GeV at the Large electron positron storage ring (LEP) at CERN