http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Effects of Aquarobic Exercise on Body Composition and Cardiovascular Index in Elderly Women
Chankyu KIM,Byunghoon LEE 물리치료재활과학회 2021 Physical therapy rehabilitation science Vol.10 No.3
Objective: The community has implemented a variety of exercise programs for the elderly population. However, studies comparing changes in the cardiovascular system through body composition and blood analysis after applying aqua aerobic exercise are insufficient. The purpose of this study was to investigate the effect of a 12 weeks aqua exercise on body composition and cardiovascular index in elderly women. Design: Non-equivalence pre-post design. Methods: Thirty elderly women were assigned to aquarobic group(n=15) and control group(n=15). The aquarobic exercise was 60 minutes per every session, 2times per week, for 12weeks. Weight, skeletal muscle mass, body fat percentage, total cholesterol, triglyceride, HDL cholesterol, and LDL cholesterol were measured before and after the exercise program. Paired and independent t-tests were performed using SPSS program. Results: The result showed was weight(p<0.05), body fat percentage(p<0.05), total cholesterol(p<0.05), triglyceride(p<0.05), HDL cholesterol(p<0.05), and LDL cholesterol(p<0.05) were significantly decreased and skeletal muscle mass(p>0.05) was not significantly increased after aquatic exercise program. Conclusions: According to the study result, aqua exercise program made a positive effect in the improvement of obesity and cardiovascular function in elderly women. Therefore, we suggest that you actively consider implementing the Aquarobic exercise program when operating the community health promotion program in the future. In addition, in future studies, comparative studies according to various ages and genders and studies on the effects of aqua aerobic exercise as a community exercise program for chronically illness patients are needed.
Chankyu Park,Dinh Truong Nguyen,Kyooyeol Lee 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.04
Insects and animals can recognize surrounding environments by detecting thousands of chemical odorants. Olfaction is a complicated process that begins in the olfactory epithelium with the specific binding of volatile odorant molecules to dedicated olfactory receptors (ORs). OR proteins are encoded by the largest gene superfamily in the mammalian genome. We report here the whole genome analysis of the olfactory receptor genes of S. scrofa using conserved OR gene specific motifs and known OR protein sequences from diverse species. We identified 1,301 OR related sequences from the S. scrofa genome including 1,113 functional OR genes and 188 pseudogenes. OR genes were located in 46 different regions on 16 pig chromosomes. We classified the ORs into 17 families, three Class I and 14 Class II families, and further grouped them into 349 subfamilies. We also identified inter- and intra-chromosomal duplications of OR genes residing on 11 chromosomes. A significant number of pig OR genes (n=212) showed less than 60% amino acid sequence similarity to known OR genes of other species. We also performed a similar analysis on the cattle OR subgenome and identified 1,071 OR related sequences. We show that S. scrofa has one of the largest OR repertoires, suggesting an expansion of OR genes in the swine genome. Considering available information from literature, it seems that OR systems between mammals and insects possess high similarity in their action mechanisms and rapid evolutionary changes due to differences in living environments.
Chankyu Kim(김찬규),Wonju Jeon(전원주) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Acoustic metamaterials and metasurfaces have enabled extraordinary sound wave manipulation. Flat and thin acoustic lenses with high transmittance have also been proposed exploiting space-coiled acoustic metamaterials, and the focusing capabilities have been validated by numerical simulations. However, the lenses are hardly realized or it is likely to have far less focusing capability than the numerical predictions because they were designed without the consideration of elastic deformation and the visco-thermal losses. In this study, we realize an acoustic metalens with broadband high transmission by considering the two factors in the design procedure. Experiments show that the designed lens exhibits amplification of acoustic energy almost six at 6 kHz and focuses sound waves into a narrow region with a full width at half maximum of 0.56λ within a broad bandwidth of 2.5–5.5 kHz.
Knowledge-Based AOP Framework for Business Rule Aspects in Business Process
Chankyu Park,최호진,이단형,강성원,Hyun-Kyu Cho,Joo-Chan Sohn 한국전자통신연구원 2007 ETRI Journal Vol.29 No.4
In recent years, numerous studies have identified and explored issues related to web-service-oriented business process specifications, such as business process execution language (BPEL). In particular, business rules are an important cross-cutting concern that should be distinguished from business process instances. In this paper, we present a rule-based aspect oriented programming (AOP) framework where business rule aspects contained in business processes can be effectively separated and executed. This is achieved by using a mechanism of the business rule itself at the business rule engine instead of using existing programming languagebased AOP technologies. Through some illustrative examples, this work also introduces a method by which business rule aspects, separated through an external rule engine, can be represented and evaluated. We also demonstrate how they can be dynamically woven and executed by providing an implementation example which uses two open-source-based products, the Mandarax rules engine and Bexee BPEL engine.
Modeling and Control of an Electronic-Vacuum Booster for Vehicle Cruise Control
Chankyu Lee,Kyongsu Yi 대한기계학회 2002 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.16 No.10
A mathematical model and control laws for an Electronic-Vacuum Booster (EVB) for application to vehicle cruise control will be presented. Also this paper includes performance test result of EVB and vehicle cruise control experiments. The pressure difference between the vacuum chamber and the apply chamber is controlled by a PWM-solenoid-valve. Since the pressure at the vacuum chamber is identical to that of the engine intake manifold, the output of the electronic-vacuum booster is sensitive to engine speed. The performance characteristics of the electronic-vacuum booster have been investigated via computer simulations and vehicle tests. The mathematical model of the electronic-vacuum booster developed in this study and a two-state dynamic engine model have been used in the simulations. It has been shown by simulations and vehicle tests that the EVB-cruise control system can provide a vehicle with good distance control performance in both high speed and low speed stop and go driving situations.<br/>
Chankyu Park,William Falls,Jacqueline H. Edgar,Chantal M. Longo-Guess,Susan L. Ackerman 한국실험동물학회 2001 한국실험동물학회 학술발표대회 논문집 Vol.2001 No.-
Positional cloning (map-based cloning) of mutations or genetic variations has been served as an invaluable tool to understand in vivo functions of genes and to identify molecular components underlying phenotypes of interest. Mice homozygous for the cerebellar deficient folia (cdf) mutation are ataxic, with cerebellar hypoplasia and abnormal lobulation of the cerebellum. In the cdf mutant cerebellum approximately 40% of Purkinje cells are ectopically located within the white matter and the inner granule cell layer (IGL). To identify the cdf gene, a high-resolution genetic map for the cdf-gene-encompassing region was constructed using 1997 F2 mice generated from C3H/HeSnJ-cdf/cdf and CAST/Ei intercross. The cdf gene showed complete linkage disequilibrium with three tightly linked markers D6Mit208, D6Mit359, and D6Mit225. A contig using YAC, BAC, and P1 clones was constructed for the cdf critical region to identify the gene. We have identified a deletion in the cdf critical region on Chromosome 6 that removes approximately 150 kb of DNA, including an exon encoding a portion of the actin-binding domain of N-catenin, the protein that links the classical cadherins to the neuronal cytoskeleton. Normal cerebellar and hippocampal morphology was restored in cdf mutant mice expressing an N-catenin cDNA transgene, demonstrating that the catenin/cadherin cell adhesion complexes play an important role in the lamination of the cerebellum and hippocampus. Furthermore, our analysis of mutant mice demonstrates that fear conditioning, a form of associative learning, and prepulse inhibition are disrupted in cdf mutant mice, implicating the involvement of catenin/cadherin complexes in these behavioral processes.
A Wrist-Type Fall Detector with Statistical Classifier for the Elderly Care
( Chankyu Park ),( Jaehong Kim ),( Joo-chan Sohn ),( Ho-jin Choi ) 한국인터넷정보학회 2011 KSII Transactions on Internet and Information Syst Vol.5 No.10
Falls are one of the most concerned accidents for elderly people and often result in serious physical and psychological consequences. Many researchers have studied fall detection techniques in various domain, however none released to a commercial product satisfying user requirements. We present a systematic modeling and evaluating procedure for best classification performance and then do experiments for comparing the performance of six procedures to get a statistical classifier based wrist-type fall detector to prevent dangerous consequences from falls. Even though the wrist may be the most difficult measurement location on the body to discern a fall event, the proposed feature deduction process and fall classification procedures shows positive results by using data sets of fall and general activity as two classes.