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Bat–ball contacts are critical in the baseball hitting process. However, an effective training method for increasing the impact perception of a bat–ball contact is currently unavailable. Although not widely used, hitting a stationary weighted baseball can be an appropriate method for batters to simulate the perception of hitting a moving baseball. Therefore, swing velocity, wrist vibration, and forearm muscle activation for hitting stationary weighted, stationary regulation, and pitched baseballs were investigated in this study. Twelve position players hit a stationary weighted, stationary regulation, and pitched baseball at a speed of 70.28 ± 3.84 km/h in a random order. The swing velocity, wrist vibration, forearm muscle activation, and co-contraction ratio during hitting phases were analysed. The results indicated that the swing velocity during each specific phase demonstrated no significant differences between the different conditions. Hitting weighted and pitched baseballs caused higher wrist vibration, muscle activation, and co-contraction ratio during the contact phase than hitting regulation balls (p < 0.05). The conclusion was that hitting weighted baseballs could mimic the impact condition of hitting pitched baseballs without changing the pattern of swing velocity, which suggested that this method has potential as a hitting drill for improving hitting perception at bat–ball contact. [ABSTRACT FROM AUTHOR]

Muscles serve as a critical regulator of locomotion and damping, resulting in changes of soft tissue vibration. However, whether muscle fibre compositions of different individuals will cause different extents of soft tissue vibration during gait is unclear. Therefore, this study investigated the differences in lower extremity vibration frequencies among power-trained and non-power-trained athletes during walking and running. Twelve weightlifting athletes were assigned to the power-trained group and twelve recreational runners were assigned to the non-power-trained group. Accelerometers were used to detect soft tissue compartment vibration frequencies of the rectus femoris (RF) and gastrocnemius medialis (GMS) during walking and running. Results indicated that power-trained athletes, as compared to the non-power-trained, induced significantly (p < 0.05) higher vibration frequencies in their soft tissue compartments during walking and running. This suggests that power-trained athletes, who have higher ratios of fatigable fast-twitch muscle fibres, may have induced higher soft tissue compartment vibration frequencies. As a result, there is a likelihood that power-trained athletes may recruit more fatigable fast-twitch muscle fibres during muscle tuning, causing dysfunctions during prolonged exercises. [ABSTRACT FROM AUTHOR]

Efforts to advance health technology assessment (HTA) in Taiwan have aimed to optimize the allocation of National Health Insurance (NHI) resources. This study documents and analyzes the historical timeline of Taiwan's efforts in HTA, identifying areas to advance the HTA system, such as gaining broad stakeholder acceptance. We document ambitious plans to establish a larger, independent HTA center and how these plans did not materialize. The historical timeline also describes the primary focus of HTA shifting to serve the needs of decision-making authorities and committees. We argue that these changes resulted in growth of the HTA system, but also led to significant external criticism and potential compromise of its foundational principles. The inability to create a national HTA center can be attributed to several factors, including an immature ecosystem of HTA-Policy-Patient-Provider-Academic collaboration, a lack of a supportive culture, and challenging political and economic conditions. Nevertheless, if effectively managed, Taiwan's current HTA system could play a crucial role in rational decision-making, informed choices, and efficient NHI resource management. We argue that greater autonomy is crucial for enhancing financial sustainability and protecting against external influences to ensure objective and credible assessments. Additionally, we emphasize the importance of fostering a conducive learning environment to improve methodological expertise. [ABSTRACT FROM AUTHOR]

In recent years, rapid changes in the Earth's climate and environment have influenced our lives greatly. The ocean occupies 70% of the Earth's surface and is intimately related to the regulation of climate, fostering of life, and also to social economy, as well as sports and leisure. Students in the senior years of primary education are in a phase of developing value systems. Concurrently, these students are also constantly using the Earth's resources. More importantly, they will play leading roles in the next generation. From the perspective of education, the learning status of student's cognition, attitudes, and behaviors regarding protection of the marine environment must be understood more clearly to avoid future mismanagement of marine environmental problems on the part of these students. Hence, this study uses correlative, regressive, and path statistical analysis to examine data collected from questionnaires. Results show that student knowledge of and attitudes toward marine environmental protection do not have significant influences on behaviors; however, student's marine environmental protection knowledge, attitudes, and behaviors are all within the medium to high range. Because of relatively low student curricular involvement, and because involvement has no correlation with knowledge performance, this study infers that school curricula are not the main sources of student information and attitudes regarding marine environmental protection. Rather, building student attitudes toward marine environmental protection by increasing their involvement in field trips indirectly influences behaviors that are protective of the marine environment. Such an approach is comparatively more effective and can serve as a reference for modifying the implementation methods of marine protection curricula. [ABSTRACT FROM AUTHOR]

Why would R&D employees be willing to use an electronic knowledge repository (EKR) for knowledge-sharing? This study integrates a technology acceptance model (TAM) to investigate the influence of extrinsic and intrinsic motivations on R&D employees' acceptance of an EKR for knowledge-sharing. Empirical data were collected through a survey, which gathered data from 225 employees working in 10 organisations in Taiwan. The results indicated that (1) reputation and reciprocity were found to be two important antecedents to perceived usefulness and perceived ease of use; (2) altruism was also found to be an important antecedent to perceived ease of use; (3) reputation was the most influential factor of perceived usefulness, and another influential factor of perceived usefulness was reciprocity. Three knowledge-sharing motivations that significantly affect the perceived ease of use were listed as reciprocity, altruism, and reputation, according to the relative importance; (4) altruism plays an important role in explaining the EKR usage intentions for knowledge-sharing both directly and indirectly; and (5) the results were consistent with the propositions of TAM. This study contributes theoretically and empirically to the body of EKR usage research and also has practical implications. [ABSTRACT FROM AUTHOR]