• 한국운동역학회지
• /
• 제25권2호
• /
• pp.167-174
• /
• 2015

Purpose : The purpose of this study was to investigate the effects of loaded vertical jumps on the following vertical jumps and to find how long the transient effect of warm-ups would continue. Methods : Twelve healthy college male students, majoring in physical education, participated in this study voluntarily. They performed three sets of unloaded jumps (pre-jump, 5% post jump, and 10% post jump) and two sets of loaded jumps (5% and 10% loaded jumps) according to the counter-balanced order. At each set, three trials of maximal vertical jumps were performed by a 30 second interval between trials and a 3 minute break after warm-up jumps. Force platform and motion capturing system were used to record motions and ground reaction force. Results : Only 5% post-warm-up jumps ($48.29{\pm}2.06cm$) showed significant increase in the jump height compared with pre-warm-up jumps ($47.35{\pm}2.21cm$). The transient effects of loaded warm-ups disappeared 4 minutes after loaded jumps. Conclusion : Conclusively, a decent amount of loading (around 5% extra of body weight) during sport specific warm-ups would give a positive, transient effect on the performance of the vertical jump.

• 대한통합의학회지
• /
• 제2권3호
• /
• pp.1-7
• /
• 2014

Purpose : The purpose of this study was to evaluate the influence of Lowenstein Occupational Therapy Cognitive Assessment(LOTCA) and Activities of Daily Living(ADL) by CogPack program in elderly with Alzheimer's dementia. Method : The subjects of this study, elderly diagnosed with Alzheimer's dementia, 8 patients were picked up, who were agreed with this research. Cognitive training for 6 weeks, which consisted of 3 times per week, 30 min of memory, attention and performance with cogpack program. Cognitive and ADL measured by LOTCA and FIM. The SPSS Ver. 14.0 statistical program was used for data processing. The significance level for statistical inspection was set as 0.05. Result : In comparison of LOTCA was significantly correlated in the pre and post test but FIM was not significantly correlated in the pre and post test. Conclusion : Therefore, the CogPack program is useful to improve the LOTCA in elderly with Alzheimer's dementia.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2008년도 춘계학술대회 논문집
• /
• pp.229-234
• /
• 2008

Korea Electric Power Corporation (KEPCO) has started the nation's first biogas-microturbine project in the city of Gongju as an effort to encourage the utilization of wasted biogas containing useful energy source in the form of $CH_4$. The goal of the project is to set up the biogas microturbine co-generation system for utilizing biogas as an energy source and improving the economics of the wastewater treatment plant. Wastewater treatment processes were investigated in depth to find improvement possibility. Changes in internal recirculation ratio and pre-treatment degree are needed to optimize plant operation and biogas production. Biogas pre-treatment system satisfies Capstone's fuel condition requirement with the test result of 99.9% and 90.2% of hydrogen sulphide and ammonia is removal performance. Installation of microturbine and manufacture of heat exchanger to warm anaerobic digester has been done successfully. Expected economic profit produced by the system is coming from energy saving including electricity 115,871kWh/year and heat contained in exhaust gas 579GJ/year.

• The Journal of Korean Physical Therapy
• /
• 제24권6호
• /
• pp.405-408
• /
• 2012

Purpose: We examined the effect of dual-task and single-task training on serial reaction time (SRT) task performance to determine whether SRT is based more on motor or perception in a dual-task. Methods: Forty healthy adults were divided into two groups: the dual-task group (mean age, $21.8{\pm}1.6$ years) and the single-task group (mean age, $21.7{\pm}1.6$ years). SRT task was conducted total 480 trial. The four figures were presented randomly 16 times. A unit was set as 1 block that would repeat 10 times. Thus, there were a total of 160 trials for each of the three color conditions. The dual-task group performed an SRT task while detecting the color of a specific shape. The end of the task, subjects answered the specific shape number; the single-task group only performed the SRT task. The study consisted of three parts: pre-measurement, task performance, and post-measurement. Results: Differences of pre and post reaction time between two group was higher for the dual-task group as compared to the single task group and there was a significant interaction between time and group (p<0.05). Conclusion: Our results indicate that. short term period SRT is not quiet effective under dual-task conditions, individuals need additional cognitive processes to successfully navigate a task This suggests that dual-task training might not be appropriate for motor learning enhancement, at least when the training is over a short period.

• 한국컴퓨터그래픽스학회논문지
• /
• 제8권1호
• /
• pp.1-11
• /
• 2002

볼륨 렌더링 기술이 실제 응용 분야에서 널리 사용되기 위해서는 사용자가 3차원 데이터에 내재되어 있는 의미있는 정보를 쉽게 찾을 수 있도록 대화식으로 분류 파라미터를 조절하고 그 결과 영상을 빠른 속도로 가시화시켜 주는 것이 필요하다. 이제까지 제시된 볼륨 렌더링의 가속화 방법은 전처리 과정으로 비균등한 볼륨 데이터를 균등한 볼륨으로 재구성하고 분류 작업을 수행한 후, 실행시간에 렌더링을 빠르게 수행하는데 주안점을 두고 있다. 그러나 이러한 방법은 전처리 시간이 길어지고 사용자가 실행시간에 대화식으로 분류 파라미터를 지정하여 그 결과 영상을 피이드백 받을 수 없는 단점이 있다. 본 논문에서는 별도의 하드웨어 없이 범용 컴퓨터 상에서 대화식으로 분류 및 렌더링을 수행할 수 있는 가시화 방법을 제안한다.

• 대한통합의학회지
• /
• 제2권2호
• /
• pp.13-20
• /
• 2014

Purpose : The purpose of this study was to evaluate the influence of cognition and executive function by computer - based attention program in vascular dementia. Method : The subjects of this study, old man diagnosed with vascular dementia, 12 patients were picked up, who were agreed with this research and were having hospital care for 4 weeks at nursing care centers. Computer-based attention program was applied to vascular dementia. Cognitive function measured by a K-MMSE and executive function measured by ACL. The SPSS Ver. 18.0 statistical program was used for data processing. The significance level for statistical inspection was set as 0.05. Result : In comparison of cognitive function was not significantly correlated in the pre and post test and executive function was significantly correlated in the pre and post test. Conclusion : Therefore, the computer-based attention program is useful to improve the cognitive and executive function in elderly with vascular dementia.

• 대한한방내과학회지
• /
• 제19권1호
• /
• pp.452-465
• /
• 1998

Rosae laevigatae Fructus extract (RLF) was tested for the effects on the urethral nitric oxide synthase (NOS) activity and Antioxidation in streptozotocin (STZ) induced diabetic rats. RLF was treated firstly into samples, and then STZ induced diabetic rats were set with them. In vitro, the urethral NOS activity was not noted but the type O activity and type conversion ratio of xanthine oxidase and the level of urethral lipid peroxide were decreased in the level of Dose of extract prepared from RLF. In vivo, after the extract was administered to the animal model for fifteen days, the urethral NOS activity increased in STZ induced diabetic rats to the level of normal rats. The content of urethral nitrite and glutathione followed by RLF pre-medicating administration, increased as highly as normal group in compare with the group treated with STZ. The type O activity and type conversion ratio of xanthine oxidase and the level of urethral lipid peroxide followed by RLF pre-medicating administration, decreased as lowly as normal group in compare with the group treated with STZ. In conclusion, the extract of RLF will be able to restore erectile dysfunction of STZ induced diabetic rats.

• 한국펄프종이공학회:학술대회논문집
• /
• 한국펄프종이공학회 2006년도 PAN PACIFIC CONFERENCE vol.1
• /
• pp.129-136
• /
• 2006

Although cleaner and cheaper deinking of ONP could be performed at the neutral or low alkaline condition excessive loss from froth-flotation is unavoidable and so reduction of alkali or caustic soda dosage sacrifices recycling yield. Now the new trade-off regarding alkali dosage versus flotation yield is urgently required in order to set the optimized neutral or low alkaline deinking process of ONP. Lipase from Thermomyces Lanuginosus has an effect on desizing and deacetylation reaction and it could be applied to the stock of pre flotation secondary stage in order to reduce the flotation reject without the sacrifice of optical properties of flotation accepts. Instead of inorganic base, lipase could be applied as a biochemical catalyst for the selective modification of valuable hydrophobic particles in deinking stock, for example cellulose fines and inorganic fillers covered by hydrophobic additives or contaminants. When the enzymatic hydrolysis of ester bond could be made on the surface of hydrophobic particulates, unwanted float of fine particles could be prevented. Now the enhancement of flotation selectivity or the modification of the hydrophobicity of deinking stock is expected to be promoted by the enzymatic pre treatment. And the reduction of recycling cost with the saves of raw material, recovered paper would be possible as a result.

• 한국정보과학회논문지:데이타베이스
• /
• 제33권4호
• /
• pp.384-395
• /
• 2006

항공 및 위성 사진과 같은 지형 / 지물 이미지는 대부분 비슷한 색상과 질감을 갖는다. 따라서 지형 / 지물 이미지 데이타베이스에서 질의 이미지를 정확하게 검색하기 위해서는 이미지의 형태 특정을 추출하는 것이 매우 중요하다. 본 논문에서는 지형 / 지물 이미지 검색을 위한 형태 특정 추출 방법을 제안한다. 이 방법은 이미지내 홀(hole) 이 있거나 이미지가 연결되지 않은 영역들로 구성되어 있을 경우에도 형태 특징들을 효과적으로 추출할 수 있다. 그리고 세그멘테이션 (segmentation)과 같은 특정 추출의 전처리 과정 (pre-processing) 에서 발생할 수 있는 오류에 강인하다. 본 논문에서 제안하는 방법이 기존의 방법들 보다 우수함을 다양한 이미지 검색 실험을 통해 보인다.

• 영어어문교육
• /
• 제15권4호
• /
• pp.177-197
• /
• 2009

This study investigated the effects of dictation practice, in terms of listening proficiency and the use of listening strategy. The research was implemented for 15 weeks with 89 freshmen and sophomores at a Korean university. The subjects were divided into an experimental group and a control group. All conditions were the same in both groups, except that the experimental group had dictation practice on a regular basis in their listening classes through one semester. For the purpose of the study, two research questions were set; 1) Does dictation practice improve listening proficiency? 2) What are the differences in the use of listening strategies between the two groups? Does dictation practice make the participants use different listening strategies? A sample TOEIC listening test was conducted as a pre-test and post-test. A questionnaire was used to find out the differences in the use of listening strategies between the two groups. The results of this study reveal that there was no statistically difference in improvement between the two groups; however, the experimental group scored much higher on the post-test than the pre-test compared with the control group. In regard to listening strategies, among 6 listening strategies, the use of metacognitive listening strategies had a significant difference between the two groups. On the basis of the results, the study suggested some guidelines for dictation practice in EFL listening classes and called for more studies on its effects.