Four Wives

我们每个人的生命中都会有四位"妻子",她们分别是精神、家庭和朋友、地位和财富、我们的身体。后三位均会在临死前离我们而去,而永恒陪伴我们的却是我们的精神。     

Can changes in resistance exercise workload influence internal load,countermovement jump performance and the endocrine response?

This study examined the influence of differing volume load and intensity (%1 repetition maximum[%1RM]) resistance exercise workouts on session rating of perceived exertion (sRPE) countermovement jump (CMJ) performance and endocrine responses. Twelve participants performed a workout comprising four exercises (bench press, back squat, deadlift and prone bench pull) in randomised order as either power (POW); 3 sets × 6 repetitions at 45%1RM × 3 min inter-set rest, strength (ST); 3 sets × 3 repetitions at 90%1RM × 3 min inter-set rest, or hypertrophy (HYP); 3 sets × 10 repetitions at 70%1RM × 1 min inter-set rest in a randomised-crossover design. CMJ performance and endocrine responses were measured immediately pre-, post-, 12, 24, 48 and 72 h post-exercise. POW sRPE (3.0 ± 1.0) was lower than ST (4.5 ± 1.0) (P = 0.01), and both were lower than HYP (8.5 ± 1.0) (P = 0.01). Duration of CMJ decrement was longer (P ≤ 0.05) for HYP (72 h) compared to POW (12 h) and ST (24 h). Testosterone concentration was greater (P ≤ 0.05) immediately post-exercise in HYP compared to POW and ST. In conclusion, less inter-set rest, greater volume load and intensity (%1RM) may increase sRPE, duration of CMJ performance decrement and testosterone responses in resistance exercise.     

Stress and risk for depression in competitive athletes suffering from back pain – Do age and gender matter?†

Back pain (BP), a prominent problem for competitive athletes, is a primary reason for limitations in athletic performance and daily life restrictions. As studies on the relationship between psychological variables and BP in athletes are scarce, the aim of this study was to investigate stress and depression in competitive athletes with BP. In a cross-sectional design, data of 154 competitive athletes (51% female; M_age?=?18.81 years, SD_age?=?5.05 years) were collected, assessing Performance stress, Socio-emotional stress, Risk for depression and Psychological well-being and the two BP parameters BP Intensity and Disability. Two multiple linear regressions were conducted to predict (1) BP Intensity and (2) Disability from Performance stress, Socio-emotional stress, Risk for depression and Psychological well-being. Multiple linear regressions demonstrated that Performance stress (β?=?.21, p?=?.01) was the only significant predictor of BP Intensity (F_1,142?=?6.68, p?=?.01, R²?=?.05), whilst Risk for depression (β?=?.24, p?=?.01) was the only significant predictor of Disability (F_1,142?=?8.46, p?=?.01, R²?=?.06). Neither gender nor age explained a significant amount of variance in the models. Study results showed that, as in the general population, the variables stress and depression are related to BP in competitive athletes. In particular, BP intensity was found to be associated with stress and BP-related disability was associated with depression, whereas age and gender showed no association with the BP parameters. A longitudinal investigation is warranted to determine the direction of the observed relationships.     

The state-of-the-art in digital technology-based assessment

The role of digital technology in assessment has received a great deal of attention in recent years. Naturally, technology offers many practical benefits, such as increased efficiency with regard to the design, implementation and scoring of existing assessments. More importantly, it also has the potential to have profound, transformative effects on the field of assessment by facilitating the integration of formative activities with accountability requirements and broadening the range of abilities and the scope of constructs that can be assessed. This article provides an overview of the current state-of-the-art in digital technology-based assessment, with particular reference to advances in the automated scoring of constructed responses, the assessment of complex 21^st century skills in large-scale assessments and innovations involving high fidelity virtual reality simulations. Key challenges with respect to each are highlighted before the extent to which digital technology is truly transforming assessment is considered.     

Conceptions of the value of higher education in a measured market

A critical analysis is developed of the dominant meanings of value in marketised higher education. In policy terms, this has become informed by the logics of the measured market whereby value has become synonymous with economic return and institutional accountability. The notion of value is one which permeates many discussions on the purpose of higher education and the perceived benefits it confers onto individuals and society as a whole. This, however, remains largely implicit and unearthing the specific meaning of value (and values) clearly presents challenges. This article critically examines a variety of concepts relevant to discussion of the value of higher education, including the relationship between value and quality, consumerism, goods and performativity. In each case, it unpacks their meanings and implications for the relationship between students and institutions, particularly at a time when this is seen to be increasingly transactional. It then outlines an alternative value framing to the utilitarian ‘value for money’ so prevalent in much market-driven policy.     

Enhancing children's literacy skills: designing the Q‐Tales ecosystem for children's e‐book design and publication

This article describes the conceptualisation and development of a pedagogical framework to support the design of e‐books for children to enhance literacy development. It emerged from research undertaken within the Q‐Tales international consortium project of the EU's Horizon 2020 Programme for Research and Innovation, where the aim was to facilitate key stakeholders to collaborate and participate in the online production and publication of high‐quality, educational e‐books for children. The pedagogical framework described here sought to answer the question “What concepts and principles undergird the effective design of pedagogically impactful e‐books for children?” It is grounded by the theoretical underpinnings of socio‐constructivism, constructionism and skill theory, and how they relate to children's literacy development. A framework describing different narrative forms and component features, key pedagogical activities appropriate for different stages of reading development and design recommendations regarding the integration of multimedia into e‐books are also central to the pedagogical framework. As well as informing the design of the Q‐Tales infrastructure for children's e‐book design and publication, we hope the guidelines and pedagogical activities enumerated here will be widely useful for those designing and developing digital, interactive narratives, particularly e‐books to enhance children's emerging literacy.     

Minecraft and children’s digital making: implications for media literacy education

This article aims to contribute new knowledge about the media literacies children assemble as they play the digital game Minecraft which it describes as a children's digital making platform. The article argues media literacy's tendency to use socio-cultural and humanist accounts of media participation limit its ability to fully explain digital making practices. Socio-material and performative literacy theories are used to introduce a framework for exploring digital media literacies across four nodes: digital materials, media production, conceptual understanding and media analysis [Dezuanni, M. 2015.“The Building Blocks of Digital Media Literacy: Socio-material Participation and the Production of Media Knowledge.”Journal of Curriculum Studies 47 (3): 416–419]. The article's second half outlines how the author uses digital ethnography in his home to understand children's Minecraft digital making and the article's theoretical claims are explored using empirical data. The conclusion considers the ramifications of digital making for media literacy research and practice.     

Impact and educational outcomes of a small group self‐directed teaching strategy in a clinical neuroscience curriculum

The complexity of the material being taught in clinical neuroscience within the medical school curriculum requires creative pedagogies to teach medical students effectively. Many clinical teaching strategies have been developed and are well described to address these challenges. However, only a few have been evaluated to determine their impact on the performance of students studying clinical neuroscience. Interactive, 2‐hour, self‐directed small‐group interactive clinical case‐based learning sessions were conducted weekly for 4 weeks to integrate concepts learned in the corresponding didactic lectures. Students in the small groups analyzed cases of patients suffering from neurological disease that were based on eight learning objectives that allowed them to evaluate neuroanatomical data and clinical findings before presenting their case analysis to the larger group. Students’ performances on the formative quizzes and summative tests were compared to those of first‐year medical students in the previous year for whom the self‐directed, small‐group interactive clinical sessions were not available. There was a significant improvement in the summative performance of first‐year medical students with self‐directed clinical case learning in the second year (Y2) of teaching clinical neuroscience (P < 0.05) when compared with first‐year students in the first year (Y1) for whom the self‐directed learning approach was not available. Student performance in the formative assessments between Y1 and Y2 was not significantly different (P = 0.803). A target of ≥70% student scoring above 80% in the final summative examination was met. The current study revealed evidence for the impact and educational outcomes of a self‐directed, clinical teaching strategy in a clinical neuroscience curriculum for first‐year medical students. Anat Sci Educ 11: 478–487. © 2017 American Association of Anatomists.     

Advanced stability criteria for linear systems with time-varying delays

This paper investigates a stability problem for linear systems with time-varying delays. By constructing suitable augmented Lyapunov–Krasovskii functionals, improved stability criteria under various conditions of time-varying delays are derived within the framework of linear matrix inequalities (LMIs). Moreover, to reduce the computational burden caused by the non-convex term including h²(t), how to deal with it is applied by estimating it to the convex term including h(t). Finally, three illustrative examples are given to show the effectiveness of the proposed criteria.