Effective force and economy of triathletes and cyclists

The effective force applied on the crank, the index of pedalling effectiveness, and the economy of movement at 60, 75, 90, and 105 rev/min cadences were examined in nine cyclists and eight triathletes. Tests were performed on two days. Maximal oxygen uptake was measured and the second ventilatory threshold was estimated on day 1 using a stationary bicycle. On day 2, the four different cadences were tested at about 5% below the second ventilatory threshold. A strain gauge instrumented clip-less pedal mounted on the bicycle enabled us to measure the normal and tangential forces exerted on the pedal, while the pedal and crank angles were monitored with the aid of a video system. Based on this information, the effective force and the index of pedalling effectiveness were calculated. Cyclists produced significantly more effective force and a higher index of pedalling effectiveness at 60 and 75 rev/min and were significantly more economic at all cadences than triathletes. The significant and positive correlation between effective force and economy at all cadences suggests that improvement of the effective force would reflect on economy.     

Combined in situ micro-XRF,LIBS and SEM-EDS analysis of base metal and corrosion products for Islamic copper alloyed artefacts from Umm Qais museum,Jordan

Selected copper alloy artefacts from the collection of the Umm Qais museum at Irbid, Jordan, were studied by SEM-EDS analysis, while in situ analyses were performed by means of portable μ-XRF and LIBS spectrometers. Analysis and characterization of base metal and corrosion products of the copper alloyed artefacts were performed in relation to the environmental conditions of the display and as part of the overall assessment of the museum environment. Findings of this study are directed towards guiding a preventive conservation strategy for the copper alloyed artefacts at the Umm Qais museum.     

Intellectual capital and the firm: some remaining questions and prospects

From the publication of seminal works in the 1990s until now, a great deal of theoretical proposals and empirical evidence has been published on intellectual capital (IC) and the firm. Nevertheless, several problems remain as important impediments to the advancement and consolidation of an ‘Intellectual Capital-based View of the Firm’. Most of these issues have to do with the conceptualization and typology of IC, its measurement, and the limitations of the most common statistical methods. This article highlights the most important of these issues as well as some possible directions for future development.     

Sport selection in under-17 male roller hockey

Abstract

Characteristics of 32 international and 41 local under-17 (U-17) (14.5–16.5 years) roller hockey players were considered in the context of discrimination by competitive level using training history, anthropometry, skeletal maturation, and several laboratory and field performance tests. More international (42%) than local (22%) players were advanced in maturity status. International players had slightly less hockey experience (years), but had more practice sessions and match time (minutes) during the season. Local players were shorter and attained better performance in the 25-m dash, while international players performed better in sit-ups, ball throw and 20-m shuttle run. The fatigue index derived from the Wingate anaerobic test was higher among local players, while peak torques of knee extension and flexion were greater in international players. Stepwise discriminant function correctly classified 85% of players by competitive level based on grip strength, ratio of eccentric and concentric knee extension, number of training sessions, playing time and fatigue index. The results suggested an interaction among strength, anaerobic fitness and training plus game time as factors in discriminating international from local level players and by inference in the selection and development of youth roller hockey players.     

FACILITATORS OF AND BARRIERS TO MODEL SCHOOL PSYCHOLOGICAL SERVICES

This study examined facilitators of and barriers to comprehensive and integrated services. A national sample of 267 full‐time practicing school psychologists who were Regular Members or Early Career Members of the National Association of School Psychologists participated. We administered a survey to participants that measured the extent to which they engaged in comprehensive and integrated services and the top facilitators of and barriers to those services using web‐based survey procedures. Results indicated that the majority of facilitators identified (Personal Attributes, Stakeholder Involvement, Resources and Support, School‐Specific Variables, Contextual Variables) predicted greater levels of comprehensive and integrated service delivery. Identified barriers—which often reflected the opposite condition of the facilitators—predicted lower levels of service delivery in some instances; however, they predicted services less often than did facilitators. Implications for research focused on better understanding factors that impact service delivery and on processes for facilitating increased comprehensive and integrated service delivery are discussed. Additionally, implications for practice include the assessment of facilitators and barriers, the use of data to plan for the delivery of comprehensive and integrated services, and advocacy for systems change.     

Demographic,Academic and Psychological Profile of Students Attending Counseling Services at the University of Granada (Spain)

The Spanish educational system, in general, and particularly at the university level, is characterized by the lack of systematic and quantitative evaluative research. This lack of data based research is particularly problematic due to the significant reforms that are currently taking place. Decisions are being made at political, administrative, and educational levels that are not substantiated by meaningful research. To address these concerns, this study focuses upon providing empirical data from students who attend the University of Granada and who have sought services from Counseling Services. This paper provides data concerning the demographic, academic and psychological characteristics that impact students adaptation to the Universitys academic and personal challenges.Ph.D. student at the University of Granada in the Department of Developmental and Educational Psychology.Received her degree in Psychology from the University of Asucion (Paraguay). She is currently a Ph.D. student at the University of Granada and has received a grant to work in Counseling Services.Ph.D. student at the University of Granada in the Educational Intervention in Educational and Developmental Contexts program, offered through the Department of Developmental and Educational Psychology.     

Multiobjective optimization and multivariable control of the beer fermentation process with the use of evolutionary algorithms

This paper describes empirical research on the model, optimization and supervisory control of beer fermentation. Conditions in the laboratory were made as similar as possible to brewery industry conditions. Since mathematical models that consider realistic industrial conditions were not available, a new mathematical model design involving industrial conditions was first developed. Batch fermentations are multiobjective dynamic processes that must be guided along optimal paths to obtain good results. The paper describes a direct way to apply a Pareto set approach with multiobjective evolutionary algorithms (MOEAs). Successful finding of optimal ways to drive these processes were reported. Once obtained, the mathematical fermentation model was used to optimize the fermentation process by using an intelligent control based on certain rules.     

Reading Recovery: Exploring the Effects on First-Graders' Reading Motivation and Achievement

ABSTRACT

This study examined the effects of Reading Recovery on children's motivational levels, and how motivation may contribute to the effect of the intervention on literacy achievement. Prior studies concluded that Reading Recovery was positively associated with increased student motivation levels, but most of those studies were limited methodologically. The achievement and motivation levels before and after the intervention of Reading Recovery students and similarly low-performing first-grade students were compared using structural equation modeling. It was found that Reading Recovery had a .31 treatment effect on achievement after controlling for baseline achievement and motivational differences among the treatment and comparison students. Reading Recovery also was associated with greater average levels of posttest motivation, and motivation was found to mediate the treatment-achievement relationship. This study highlights how important it is for early reading interventions to consider the role motivation plays in literacy acquisition.