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Los autores proponen la Lingüística Textual para un reenfoque de las actividades de análisis de texto en la enseñanza. Como modelo de aplicación de esa propuesta se expone un caso de análisis textual de una nanación en el que se localizan los mecanismos de coherencia y se generan preguntas de control y ejercicios para que el alumno desarrolle estrategias de lectura.  相似文献   
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This research studied the way immigration is depicted by the neighborhood press of Barcelona. Mainstream media tend to give visibility to immigrants when problems arise. Through this visibility based on problems, and the processes of framing, a virtual social identity is constructed and given to the immigration population. However, the neighborhood press of Barcelona, inscribed within the Catalan regional press’ own idea of journalism, offers a different approach to this issue due to its history, neighborhood and commitment to the region. Through a frame analysis, three main frames gave a depiction of the immigrants different from the one the mainstream media use. The results show that this differentiated depiction still stereotypes immigrants while not granting them enough visibility even when there is no blaming or attack. In this sense, while accounting for the differences, the neighborhood press of Barcelona misses a chance of depicting immigration in a more accurate way.  相似文献   
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The purpose of this investigation was to assess the effect of compression sleeves on muscle activation cost during locomotion. Twenty-two recreationally active men (age: 25 ± 3 years) ran on a treadmill at four different speeds (ordered sequence of 2.8, 3.3, 2.2, and 3.9 m/s). The tests were performed without (control situation, CON) and while wearing specially designed lower leg compression sleeves (SL). Myoelectric activity of five lower leg muscles (tibialis anterior, fibularis longus, lateral and medial head of gastrocnemius, and soleus) was captured using Surface EMG. To assess muscle activation cost, the cumulative muscle activity per distance travelled (CMAPD) of the CON and SL situations was determined. Repeated measures analyses of variance were performed separately for each muscle. The analyses revealed a reduced lower leg muscle activation cost with respect to test situation for SL for all muscles (p < 0.05, ηp2 > 0.18). The respective significant reductions of CMAPD values during SL ranged between 4% and 16% and were largest at 2.8 m/s. The findings presented point towards an improved muscle activation cost while wearing lower leg compression sleeves during locomotion that have potential to postpone muscle fatigue.  相似文献   
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Purpose

Large therapeutic rolls (LTR) and balls are popular rehabilitation tools and have also been advertised as cardiovascular training devices. The aim of this study was to determine if individuals of varying fitness levels would reach aerobic training levels by evidence-based standards as described in American College of Sports Medicine (ACSM) publications.

Methods

Fourteen volunteers performed a maximal exercise test and on subsequent days, two submaximal exercise tests on the LTR (LTR-A and -B). LTR-A consisted of four 5-minute stages of exercise at progressive intensity levels. LTR-B included 20 minutes of continuous exercise. Oxygen consumption (VO2) and heart rate (HR) during exercise on the LTR were compared with ACSM recommended standards.

Results

The average (range) peak intensity achieved during LTR-A was 66.8% (51.7-82.7%) of maximal VO2 reserve (VO2R) and 82.9% (70.7%-91.2%) of maximal heart rate (HRmax). During LTR-B, HR and VO2 of all participants was maintained at moderate exercise intensity and averaged 56% of VO2R and 78% of HRmax during the 20 minute exercise period.

Conclusions

These findings suggest that individuals with a wide range of aerobic fitness are able to reach and maintain aerobic training levels with appropriate exercise on a large therapeutic roll or ball.Key Words: large therapeutic roll, Swiss Ball, aerobic exercise, exercise intensity  相似文献   
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We present a 91 MHz surface acoustic wave resonator with integrated microfluidics that includes a flow focus, an expansion region, and a binning region in order to manipulate particle trajectories. We demonstrate the ability to change the position of the acoustic nodes by varying the electronic phase of one of the transducers relative to the other in a pseudo-static manner. The measurements were performed at room temperature with 3 μm diameter latex beads dispersed in a water-based solution. We demonstrate the dependence of nodal position on pseudo-static phase and show simultaneous control of 9 bead streams with spatial control of −0.058 μm/deg ± 0.001 μm/deg. As a consequence of changing the position of bead streams perpendicular to their flow direction, we also show that the integrated acoustic-microfluidic device can be used to change the trajectory of a bead stream towards a selected bin with an angular control of 0.008 deg/deg ± 0.000(2) deg/deg.  相似文献   
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摘要:全世界约有250万人患有多发硬化症(MS),并且发病率有增加趋势。MS是一种中枢神经系统疾病,与多种症状和功能障碍相关。目前一线治疗方法对晚期患者基本无效。越来越多的证据表明体力活动(PA)有益于MS患者,但是大多数MS患者存在PA不足和静坐少动行为。因此,我们提出了10个研究问题,旨在指导今后有关PA和MS的研究:1)PA是否是一种MS的缓解性治疗行为?2)PA对MS患者有哪些益处?3)什么样的PA处方最适合MS患者?4)MS患者在PA中有哪些安全问题?5)哪些MS患者可以通过PA获得益处?6)哪些变量可以用来解释PA对MS患者的作用?7)有效促进 MS患者进行PA的行为干预方法是什么?8)我们如何将研究成果用于实际临床工作中?9)静坐少动行为对MS患者有什么影响?10)评价MS患者PA的最佳方法是什么?这些问题对于帮助我们了解PAPA对MS患者长期和短期的效果,开发新方法促进和保持MS患者的PA至关重要,解决这些问题可以大大改善MS患者的生活质量。  相似文献   
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The task of a critical theory of society is to make visible the colonization and fragmentation processes which lead to distorted communication and to barriers to effective (political) action. Such a theory is however not very illuminating about the practical dimensions of how to go about — in concrete political contexts — organizing the processes of enlightenment, the selection of appropriate strategies, the solution of tactical questions, and the conduct of social and political struggle. Science therefore has to be very modest and careful in making recommendations. Theory can support counsellors with critical analysis of the contexts and conditions of the lives and problems of their clients, as well as of their own professional situation. It can for instance clarify the conditions for communication and intersubjectivity and describe and explain the structural and material conditions which prevent free symbolic interaction or unconstrained communication from taking place. But this assessment of the relation between theory and practice jeopardizes all those who believe in the rather unproblematic nature of applied sciences. We make no attempt to survey the various contributions to this debate, but restrict ourselves to presenting important aspects of the work of one of the most active actual adherers of critical theory: Jürgen Habermas.University of Amsterdam  相似文献   
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