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Effectiveness of a Warm-up Program with Dynamic Stretching in Preventing Sports Injuries
Yuta Sudo(Yuta Sudo ),Kazuki Kubo(Kazuki Kubo ),Toshihiko Shinohara(Toshihiko Shinohara ),Kazumasa Nakagawa(Kazumasa Nakagawa ) 사피엔시아 2022 Exercise Medicine Vol.6 No.-
Objectives: This study aimed to conduct a warm-up (W-up) program incorporating movement preparation (MP) and clarify its effect on sports injury prevention. Methods: The subjects of the study were 55 first- to third-year students (age: 15.9 ± 1.0 years, height: 168.5 ± 5.2 cm, weight: 57.4 ± 5.3 kg) belonging to a high school boys' soccer team. The first two months were the control period (CP), and the next two months were the intervention period (IP). The CP was a conventional W-up and the IP was a W-up with MP. The effects of each W-up were compared in terms of the incidence of sports injuries and disabilities during both periods and the incidence of sports injuries and disabilities by cause. Other measurements were compared for a total of seven items, including flexibility, balance, and performance. Results: During the IP, the incidence of sports injuries during practice and the incidence of non-contact sports injuries were reduced, whereas flexibility, balance, and performance improved. Conclusions: W-up incorporating MP showed improvement in flexibility and related balance, which may have led to the reduction of sports injuries.
IEEE 802.11 SATURATION THROUGHPUT ANALYSIS WITH FREEZING OF BACKOFF COUNTERS
Yutae Lee 한국산업응용수학회 2005 한국산업응용수학회 학술대회 논문집 Vol.- No.-
This paper presents an accurate model for the performance analysis of IEEE 802.11 saturation throughput with freezing of the backoff counter. The model corrects the exiting model presented by Foh and Tantra.
Combined Clozapine and Electroconvulsive Therapy in a Japanese Schizophrenia Patient: A Case Report
Yuta Yoshino,Yuki Ozaki,Koichiro Kawasoe,Shinichiro Ochi,Takanori Niiya,Naomi Sonobe,Teruhisa Matsumoto,Shu-ichi Ueno 대한정신약물학회 2014 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.12 No.2
Clozapine is well-known for successful use in schizophrenic patients treatment resistant to other antipsychotics. However, evenwith clozapine, 25% of schizophrenic patients are not in remission. Recently, as adjunctive treatment with clozapine, electroconvulsivetherapy has been reported to be an effective and safe adjunctive treatment. We report a Japanese schizophrenicwoman who was not in remission with clozapine alone but with both clozapine and electroconvulsive therapy.
Tradition and Japanese vegetables: history, locality, geography, and discursive ambiguity
Yuta Uchiyama,Yoshinori Fujihira,Hikaru Matsuoka,Ryo Kohsaka 한국식품연구원 2017 Journal of Ethnic Foods Vol.4 No.3
Background: Traditional vegetables are produced and consumed throughout Japan. Individual vegetables, including Kyo vegetables and Kaga vegetables, are individually defined with their own criteria for history and quality standards and are registered in their respective regions. Several traditional vegetables are utilized as symbols of regional revitalization. For example, Kaga vegetables are tourist attractions, and Noto vegetables are promoted in the Noto region and were registered under the Globally Important Agricultural Heritage Systems (GIAHS). Methods: We will review the distribution, public standards, and definitions of dento-yasai, traditional Japanese vegetables. Quantitative analysis on the status of the branding of traditional vegetables will be conducted. Results: First, the ambiguity and distribution of traditional vegetables are demonstrated. Next, as a case study, the results of a quantitative analysis of Kaga vegetables and Noto vegetables are provided. Kaga vegetables have their own quality standards and definition, and producers have acknowledged the positive impact of the regional certification, GIAHS, on the amount sold. However, a social conflict has been caused by their standards and definition. On the other hand, Noto vegetables do not have a strict quality standard, and they were registered relatively recently. Because of their comparatively lax standard, producers could not acknowledge the positive impacts of GIAHS certification. Conclusion: Origins of traditional Japanese vegetables and relationships with their regions have innumerable ambiguous points. The results of the analysis of two types of traditional vegetables show that quality standards and definitions strongly influence branding and brand management.
Yuta Saito,Etsuko Kusukawa 대한산업공학회 2018 Industrial Engineeering & Management Systems Vol.17 No.3
This paper discusses risk analysis and supply chain coordination (SCC) for the optimal operation in a supply chain under e-commerce environment (e-SC) with the uncertainties in product demand and customer returns. An e-SC consists of a retailer and a manufacturer. The return handlings are discussed regarding customer returns and unsold products. A retailer receives customer returns from a market once and resells the resalable returns in the same market. A manufacturer buys back the unsold products and the un-resold customer returns from the retailer, considering the difference of quality between them. The mean-variance analysis (MVA) with three risk attitudes regarding the above uncertainties is discussed: risk-neutral attitude maximizing the decision maker’s expected profit in e-SC, risk-averse attitude with negative consideration of variance of the relevant profit, and risk-prone attitude with positive consideration of the variance. Using MVA, the optimal operations for product order quantity, the unit retail price and refund ratio of customer returns under the decentralized e-SC (DSC) and the integrated e-SC (ISC) are determined. The analysis numerically verified that each risk attitude on product demand and customer returns affected the optimal operations under DSC and ISC. SCC adjusting the unit wholesale price and buyback prices between members under ISC can shift to ISC.
Fast Circuit Simulation Based on Parallel-Distributed LIM using Cloud Computing System
Yuta Inoue,Tadatoshi Sekine,Takahiro Hasegawa,Hideki Asai 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
This paper describes a fast circuit simulation technique using the latency insertion method (LIM) with a parallel distributed leapfrog algorithm. The numerical simulation results with the cluster that uses the cloud computing system are shown. As a result, it is confirmed that our method is very useful and practical.
Apiculture knowledge transmission in a changing world: Can family-owned knowledge be opened?
Yuta Uchiyama,Hikaru Matsuoka,Ryo Kohsaka 한국식품연구원 2017 Journal of Ethnic Foods Vol.4 No.4
Background Ecosystem services of pollinators have been gaining importance, as mentioned in the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services thematic report on pollination in 2016. Apart from wild bees, human interventions including apiculture can contribute to management of ecosystem services. Ecological and local knowledge of management is transmitted through various processes, varying in content and quality. Methods We analyzed the processes of knowledge transmission, beekeeping productivity, and their interactions with each other. The study was conducted in the Nagano Prefecture, Japan, where the largest quantity of bee honey is produced nationally. Beekeeping knowledge in Nagano is transmitted through different information channels, including families, friends, and books. We categorized the beekeepers based on their information channels. The relationship between productivity of beekeeping and information channels was also analyzed. Results It was identified that beekeepers who obtained their knowledge from their parents had relatively large number of bee colonies. Furthermore, we observed by interviews with them that they tended to understand the importance of ecological conditions for sustainable beekeeping. Conclusion The results implied a challenge to open the knowledge transmission channels beyond families, potentially transforming the knowledge from tacit knowledge among limited members to an explicit manualized knowledge in an aging society.
DISCRETE-TIME QUEUE WITH VARIABLE SERVICE CAPACITY
Yutae Lee 대한수학회 2005 대한수학회지 Vol.42 No.3
This paper considers a discrete-time queueing system with variable service capacity. Using the supplementary variable method and the generating function technique, we compute the joint probability distribution of queue length and remaining service time at an arbitrary slot boundary, and also compute the distribu-tion of the queue length at a departure time.
Denoising on Low-Dose CT Image Using Deep CNN
Yuta Sadamatsu,Seiichi Murakami,Guangxu Li,Tohru Kamiya 제어로봇시스템학회 2022 제어로봇시스템학회 국제학술대회 논문집 Vol.2022 No.11
Computed Tomography (CT) scans are widely used in Japan, and they contribute to public health. On the other hand, there is also a risk of radiation exposure. To solve this problem, attempts are being made to reduce the radiation dose during imaging. However, reducing the radiation dose causes noise and degrades image quality. In this paper, we propose an image analysis method that efficiently removes noise by changing the activation function of Deep Convolutional Neural Network (Deep CNN). Experimental tests using full-body slice CT images of pigs and phantom CT images of lungs with Poisson noise show that the proposed method is helpful by comparing them with normal-dose CT images and evaluating image quality using peak signal-to-noise ratio (PSNR).