2,438 research outputs found

    THE AiNTHROPOMETRIC STUDY OF WOMEN'S WEIGHTLIFTERS IN TAIWAN

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    Anthropometric measurements were used to describe individuals or populations, while some measurements are used for correlation with performance in sport; others are used to investigate the public health and nutrition survey (Kipper, 1996), differences between local races and maturation at the young age of athletes (Kipper, 1998). Because of particularity of each sport event, the anthropometric parameters showed the specific results from different sport events. But there was no research to investigate the anthropometric data and features for female weightlifting, providing for proper material selection for young weightlifters. The purpose of this study was to investigate data of body measurements of women's weightlifters in Taiwan, and was to find the differences at the three age groups in female weightlifting

    Security proof of differential phase shift quantum key distribution in the noiseless case

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    Differential phase shift quantum key distribution systems have a high potential for achieving high speed key generation. However, its unconditional security proof is still missing, even though it has been proposed for many years. Here, we prove its security against collective attacks with a weak coherent light source in the noiseless case (i.e. no bit error). The only assumptions are that quantum theory is correct, the devices are perfect and trusted and the key size is infinite. Our proof works on threshold detectors. We compute the lower bound of the secret key generation rate using the information-theoretical security proof method. Our final result shows that the lower bound of the secret key generation rate per pulse is linearly proportional to the channel transmission probability if Bob's detection counts obey the binomial distribution.Comment: Published version, 13 pages, 4 figures, minor changes, references added, acknowledgement adde

    Predictability of speech performance at age 2 for speech ability at age 3 in Cantonese-speaking Children

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    This study investigated the predictability of children’s early speech profiles at age 2 in terms of (1) the Percent Consonant Correct (PCC), (2) the total number of atypical errors, and (3) the total number of errors for the speech performance at age 3 in 38 Cantonese-speaking children. Children’s speech sound production ability was assessed using a standardized test at ages 2 and 3. Candidacy for speech sound intervention at age 3 was the outcome measure. Hierarchical multiple regression analyses showed that the PCC, the total number of atypical errors and the total number of errors demonstrated high specificity but low sensitivity after controlling the individual contribution of gender, maternal education, and language performance at age 2. These three measures at age 2 correctly identified 84% to 88% of the typical children without intervention needs but only 31% to 46% of children with intervention needs at age 3. In conclusion, speech screening at early years solely based on the speech profiles at age 2 may not be an effective way in identifying children who are at risk of speech sound disorders at age 3. Other factors may play a role in shaping the trajectory of speech sound development.published_or_final_versionSpeech and Hearing SciencesBachelorBachelor of Science in Speech and Hearing Science
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