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An Analysis on the Physical Strength Factor of the Collegians Majoring in Security Services (경호전공대학생의 체력요인 분석)

  • Jeon, Man-Joong
    • Korean Security Journal
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    • no.14
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    • pp.431-447
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    • 2007
  • The purpose of this study was to investigate the An analysis on the physical strength factor of the Collegians majoring in Security Services. In order to accomplish this purpose, subjects of this study were 80 person J university student men. Physical fitness tests was grip strength, back strength, sit-ups, stand long jump, 50m run, side step test, shuttle run, 2000m run, standing trunk flexion, and closed eye foot balance. Factor analysis applied for analysis factorial structure of each physical fitness components. The results of this study were as follow; First, the factor affecting the performance of the Collegians majoring in Security Services of their was appeared with the Power, Balance and Strength. Second, the factor affecting the performance of the Collegians majoring in Security Services of their was appeared with the Taekwondo major group with the Balance, Power, Strength and Cardiovascular Endurance. Third, the factor affecting the performance of the Collegians majoring in Security Services of their was appeared with the Judo major group with the Power, Flexibility and Strength. Fourth, the factor affecting the performance of the Collegians majoring in Security Services of their was appeared with the Hapkido major group with the Muscular Endurance, Strength, Cardiovascular Endurance and Flexibility. Fifth, the factor affecting the performance of the Collegians majoring in Security Services of their was appeared with the Gumdo major group with the Cardiovascular Endurance and Power.

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A Study on the Correlation Results for Fringe Rotation and Delay Tracking of the VCS (VCS의 지연추적과 프린지 회전에 대한 상관결과 고찰)

  • Oh, Se-Jin;Yeom, Jae-Hwan;Roh, Duk-Gyoo;Oh, ChungSik;Jung, Jin-Seung;Chung, Dong-Kyu;Oyama, Tomoaki;Kawaguchi, Noriyuki;Kobayashi, Hideyuki;Kono, Yusuke;Ozeki, Kensuke;Onuki, Hirohumi
    • Journal of the Institute of Convergence Signal Processing
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    • v.13 no.4
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    • pp.220-232
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    • 2012
  • In this paper, we investigate the correlation result due to the problems of delay tracking and fringe rotation module in the VCS(VLBI Correlation Subsystem). The VCS, FX-type correlator, adopts the delay tracking and fringe rotation module in order to compensate the delay change and fringe phase of wave signal from the radio source by Doppler's effect. The phase of observed data is also compensated by means of delay tracking and fringe rotation in the correlator, but we confirmed that the phase is unstable by applying long integration period of AIPS(Astronomical Image Processing System) rather than correlator. And the delay value of observed data has the errors of several tens nanoseconds than normal case at the analysis of correlation result. In addition, we found that the phase of correlation results is not connected as the unit of FFT-segment because the initial fringe phase at the fringe rotation module is not correctly determined. In this paper, in order to solve these problems, the original direction of 90 degree phase jump is reversely modified when the bit-shift occurred at the delay tracking. And the initial fringe phase at the fringe rotation module is correctly modified by using the initial phase of observed data. In addition, the parameter calculation module was abnormally operated as designed in the fringe rotation. So, the logical program by the VCS is modified so as to calculate the parameters correctly. Through the experiments of correlation processing over the above problems, the modified proposal algorithm is adequately corrected to the data analysis results, so that the experimental results make it clear for us to operate the developed VCS hardware correlator normally.

The Converge Effects of Long-term Weight-bearing Exercise on Lumbar, Femur Neck BMD and Body Compositions in Person with Intellectual Disabilities and Normal Men (지적장애와 일반인 남성의 장기간 체중부하운동 참여가 요추와 대퇴골경부 골밀도 및 신체구성에 미치는 융합적 효과)

  • Byun, Jae-Chul
    • Journal of the Korea Convergence Society
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    • v.7 no.2
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    • pp.101-107
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    • 2016
  • The purpose of this study was to determined the converge effects of weight-bearing exercise on lumbar, femur neck BMD and body compositions in intellectual disabilities and normal men. Nineteen men were participated for this study, they are divided into two groups(intellectual disabilities, n=9, and normal men, n=10). All subjects are accomplished on weight-bearing exercise (music rope-jumping) program for 60 minutes a day, 3 days a week throughout 12 weeks. Two-way ANOVA with repeated measures was used to determine differences between and within the intellectual and normal groups for dependent variables. The statistically significant level was set at 0.05. In this study, there were a significant differences on the bone mineral density of lumbar and femur neck level after exercise training in both groups (respectively p<.01, p<.001). Also, I found that there were effectively decreased on body weight, percent of body fat, and BMI levels after exercise training for 12 weeks in both groups (respectively p<.001). Therefore, music rope-jump exercise program may suggested to be one of the ideal training methods for enhancing and the convergence positive effect of bone mineral density and body compositions in intellectual and normal person.

A Study of Predictability of VKOSPI on the KOSPI200 Intraday Jumps using different Jump Size and Trading Time (점프발생 강도 및 거래시간에 따른 변동성지수의 KOSPI200 일중 점프 예측력에 관한 연구)

  • Jung, Dae-Sung
    • Management & Information Systems Review
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    • v.35 no.1
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    • pp.273-286
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    • 2016
  • This study investigated the information contents of KOSPI200 Options for intraday big market movement by using minute by minute data. The major findings are summarized as follows; First, big market movement occurred more frequently during 9:00~10:00 and 14:00~14:50. These phenomena reflect market unstability just after opening and near closing. Second, VKSOPI is most closely associated with extreme changes such as KOSPI200 jumps. Third, VKOSPI is showed more predictive power with negative KOSPI200 jumps than KOSPI200 jumps. Fourth, VKOSPI showed predictive power for the positive and negative jumps up to 30 minutes before the jumps occurs. The purpose of this study is to explore the most recent topics in the field of finance, research on market microstructure. This study is an important contribution to investigate intraday information comprehensively in terms of market microstructure effects using the 15-year long-term and the high-frequency data(minute by minute). The results of this study are expected to contribute to detect intraday true jumps, proactive development of market risk indicators, risk management, derivatives investment strategy.

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The Effect of Inline Skate Program on Physical Fitness(PAPS-D) Improvement of Student with Developmental Disability (인라인스케이트 프로그램이 발달장애 학생들의 건강체력(PAPS-D) 향상에 미치는 효과)

  • Chol, Jae-Yong;Kim, Ji-Sun
    • Journal of the Korean Applied Science and Technology
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    • v.36 no.2
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    • pp.541-550
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    • 2019
  • This study is aimed to find out the effect of PAPS-D on physical fitness of developmental disabled students who participated of Inline skate program. The subject of this study was 10 middle and high school students diagnosed as developmental disability. The subject attended a total of 32 classes twice a week for 16 weeks and the class was 1 hour each time. Improvement of physical fitness was assessed based on PAPS-D program developed by the Department of Education science in 2016 except for obesity measurement; cardio pulmonary function (walking in 6 minutes), flexibility (seated forward bend, clasped hand behind the back), muscle function (sit-up) and agility (standing long jump). To find out the interaction between control group and experimental group, two-way repeated measure ANOVA was used. As a result, there was a statistically significant relation in cardio pulmonary function and agility but not in flexibility and muscle function. 3 variables (cardio pulmonary function, flexibility and muscle function) among 4 variables showed positive effect of Inline skate program on physical fitness while one variable which was agility showed decreased result in post-test. Based on the results of three variables that were found to have improved in the pre post-examination, the result of this study indicates positive effect of Inline skating program on physical fitness of developmentally disabled students.

The Effects of 12-Week Training for the Physical Fitness and Cardiovascular Factors to Examine Physical Fitness on Firefighters Test-Taker (소방공무원 수험생의 체력검정을 위한 12주간 훈련이 체력요인, 심혈관계요인에 미치는 영향)

  • Lim, Youn-Sub;Park, Jin-Hong;Kim, Jong-Hyuck;Kim, In-Dong;Kim, Jae-Joong;Park, Jeong-Beom;Lee, Chae-Mun
    • Journal of Industrial Convergence
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    • v.19 no.4
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    • pp.111-126
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    • 2021
  • The purpose of this study was to investigate the effects of 12-week training on changes in physical fitness and cardiovascular factors for firefighters. For this purpose, 40 men in their 20s and 30s who agreed to participate voluntarily were recruited. They were divided into four groups: the firefighters' physical fitness test training group (hereinafter referred to as PT group), firefighters' physical fitness test and aerobic training group (hereinafter referred to as PT+AR group), firefighters' physical fitness test and both aerobic and anaerobic training group (hereinafter referred to as PT+CO group). Physical fitness factors (grip strength, back muscle strength, seated forward bend, standing long jump, sit-ups, 20-meter shuttle run), cardiovascular factors (total cholesterol, triglycerides, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, glucose, waist circumference, systolic blood pressure, diastolic blood pressure) and the relationship between Framingham Heart Risk Score and physical/cardiovascular factors were compared and analyzed, and the following conclusions were obtained. Aerobic training, anaerobic training, and combined training, including 12 weeks of firefighter physical examinations, all had positive effects on fitness and cardiovascular factors, which would be an appropriate way for firefighter examinees to improve physical strength and reduce the risk of cardiovascular disease.

PRC Maritime Operational Capability and the Task for the ROK Military (중국군의 해양작전능력과 한국군의 과제)

  • Kim, Min-Seok
    • Strategy21
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    • s.33
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    • pp.65-112
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    • 2014
  • Recent trends show that the PRC has stepped aside its "army-centered approach" and placed greater emphasis on its Navy and Air Force for a wider range of operations, thereby reducing its ground force and harnessing its economic power and military technology into naval development. A quantitative growth of the PLA Navy itself is no surprise as this is not a recent phenomenon. Now is the time to pay closer attention to the level of PRC naval force's performance and the extent of its warfighting capacity in the maritime domain. It is also worth asking what China can do with its widening naval power foundation. In short, it is time to delve into several possible scenarios I which the PRC poses a real threat. With this in mind, in Section Two the paper seeks to observe the construction progress of PRC's naval power and its future prospects up to the year 2020, and categorize time frame according to its major force improvement trends. By analyzing qualitative improvements made over time, such as the scale of investment and the number of ships compared to increase in displacement (tonnage), this paper attempts to identify salient features in the construction of naval power. Chapter Three sets out performance evaluation on each type of PRC naval ships as well as capabilities of the Navy, Air Force, the Second Artillery (i.e., strategic missile forces) and satellites that could support maritime warfare. Finall, the concluding chapter estimates the PRC's maritime warfighting capability as anticipated in respective conflict scenarios, and considers its impact on the Korean Peninsula and proposes the directions ROK should steer in response. First of all, since the 1980s the PRC navy has undergone transitions as the focus of its military strategic outlook shifted from ground warfare to maritime warfare, and within 30 years of its effort to construct naval power while greatly reducing the size of its ground forces, the PRC has succeeded in building its naval power next to the U.S.'s in the world in terms of number, with acquisition of an aircraft carrier, Chinese-version of the Aegis, submarines and so on. The PRC also enjoys great potentials to qualitatively develop its forces such as indigenous aircraft carriers, next-generation strategic submarines, next-generation destroyers and so forth, which is possible because the PRC has accumulated its independent production capabilities in the process of its 30-year-long efforts. Secondly, one could argue that ROK still has its chances of coping with the PRC in naval power since, despite its continuous efforts, many estimate that the PRC naval force is roughly ten or more years behind that of superpowers such as the U.S., on areas including radar detection capability, EW capability, C4I and data-link systems, doctrines on force employment as well as tactics, and such gap cannot be easily overcome. The most probable scenarios involving the PRC in sea areas surrounding the Korean Peninsula are: first, upon the outbreak of war in the peninsula, the PRC may pursue military intervention through sea, thereby undermining efforts of the ROK-U.S. combined operations; second, ROK-PRC or PRC-Japan conflicts over maritime jurisdiction or ownership over the Senkaku/Diaoyu islands could inflict damage to ROK territorial sovereignty or economic gains. The PRC would likely attempt to resolve the conflict employing blitzkrieg tactics before U.S. forces arrive on the scene, while at the same time delaying and denying access of the incoming U.S. forces. If this proves unattainable, the PRC could take a course of action adopting "long-term attrition warfare," thus weakening its enemy's sustainability. All in all, thiss paper makes three proposals on how the ROK should respond. First, modern warfare as well as the emergent future warfare demonstrates that the center stage of battle is no longer the domestic territory, but rather further away into the sea and space. In this respect, the ROKN should take advantage of the distinct feature of battle space on the peninsula, which is surrounded by the seas, and obtain capabilities to intercept more than 50 percent of the enemy's ballistic missiles, including those of North Korea. In tandem with this capacity, employment of a large scale of UAV/F Carrier for Kill Chain operations should enhance effectiveness. This is because conditions are more favorable to defend from sea, on matters concerning accuracy rates against enemy targets, minimized threat of friendly damage, and cost effectiveness. Second, to maintain readiness for a North Korean crisis where timely deployment of US forces is not possible, the ROKN ought to obtain capabilities to hold the enemy attack at bay while deterring PRC naval intervention. It is also argued that ROKN should strengthen its power so as to protect national interests in the seas surrounding the peninsula without support from the USN, should ROK-PRC or ROK-Japan conflict arise concerning maritime jurisprudence. Third, the ROK should fortify infrastructures for independent construction of naval power and expand its R&D efforts, and for this purpose, the ROK should make the most of the advantages stemming from the ROK-U.S. alliance inducing active support from the United States. The rationale behind this argument is that while it is strategically effective to rely on alliance or jump on the bandwagon, the ultimate goal is always to acquire an independent response capability as much as possible.

A Study on the Volatility of Global Stock Markets using Markov Regime Switching model (마코브국면전환모형을 이용한 글로벌 주식시장의 변동성에 대한 연구)

  • Lee, Kyung-Hee;Kim, Kyung-Soo
    • Management & Information Systems Review
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    • v.34 no.3
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    • pp.17-39
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    • 2015
  • This study examined the structural changes and volatility in the global stock markets using a Markov Regime Switching ARCH model developed by the Hamilton and Susmel (1994). Firstly, the US, Italy and Ireland showed that variance in the high volatility regime was more than five times that in the low volatility, while Korea, Russia, India, and Greece exhibited that variance in the high volatility regime was increased more than eight times that in the low. On average, a jump from regime 1 to regime 2 implied roughly three times increased in risk, while the risk during regime 3 was up to almost thirteen times than during regime 1 over the study period. And Korea, the US, India, Italy showed ARCH(1) and ARCH(2) effects, leverage and asymmetric effects. Secondly, 278 days were estimated in the persistence of low volatility regime, indicating that the mean transition probability between volatilities exhibited the highest long-term persistence in Korea. Thirdly, the coefficients appeared to be unstable structural changes and volatility for the stock markets in Chow tests during the Asian, Global and European financial crisis. In addition, 1-Step prediction error tests showed that stock markets were unstable during the Asian crisis of 1997-1998 except for Russia, and the Global crisis of 2007-2008 except for Korea and the European crisis of 2010-2011 except for Korea, the US, Russia and India. N-Step tests exhibited that most of stock markets were unstable during the Asian and Global crisis. There was little change in the Asian crisis in CUSUM tests, while stock markets were stable until the late 2000s except for some countries. Also there were stable and unstable stock markets mixed across countries in CUSUMSQ test during the crises. Fourthly, I confirmed a close relevance of the volatility between Korea and other countries in the stock markets through the likelihood ratio tests. Accordingly, I have identified the episode or events that generated the high volatility in the stock markets for the financial crisis, and for all seven stock markets the significant switch between the volatility regimes implied a considerable change in the market risk. It appeared that the high stock market volatility was related with business recession at the beginning in 1990s. By closely examining the history of political and economical events in the global countries, I found that the results of Lamoureux and Lastrapes (1990) were consistent with those of this paper, indicating there were the structural changes and volatility during the crises and specificly every high volatility regime in SWARCH-L(3,2) student t-model was accompanied by some important policy changes or financial crises in countries or other critical events in the international economy. The sophisticated nonlinear models are needed to further analysis.

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A Study on the Possibility of 'World Religion' in Daesoon Jinrihoe (대순진리회의 '세계종교' 가능성에 관한 연구)

  • Kwon, Dong-woo
    • Journal of the Daesoon Academy of Sciences
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    • v.35
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    • pp.73-107
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    • 2020
  • Daesoon Jinrihoe tends to be perceived as a 'nationalistic religion' by both internal members of the religious body and outside scholars of religious studies. However, the character of this particular nationalistic religion is rather complex. On top of emphasizing the special status of the Korean ethnic group while focusing on nationalism as a nationalistic religion, Daesoon Jinrihoe futrther asserts an implication of the universality of world religion aiming to bring relief to humankind and the world. This dynamic is one of the specificity of nationalistic religion and also the universality of world religion. However, this dual logic of specificity and universality is not characteristic of only Daesoon Jinrihoe. Many religions in the world have also exhibited duplicity as nationalistic religions and world religions. And this thesis pays attention to Sectarian Shinto as it formed in modern Japan. Kyoha Shinto formed when the modern Japanese government established the national Shinto system which had a total of 13 sects. Most of them do not only call themselves a nationalistic religion, inheriting the ethnic tradition of Japanese people, but also jump into overseas missionary work. This started during the Sino-Japanese and Russo-Japanese Wars. With that in mind, how did the overseas missionary work of Sectarian Shinto aspire for status as a world religion while maintaining their identities as nationalistic religions? Furthermore, how did their movements fare in their efforts to become world religions? Thus, this thesis aims to examine the possibility Daesoon Jinrihoe becoming a world religion through some cases of Sectarian Shinto that showed the duplicity as nationalistic religions and world religions. Also, this thesis makes suggestions regarding the future direction of Daesoon Jinrihoe. As such, this paper aims to review the new direction of Daesoon Jinrihoe as it stands on the borderline between being a nationalistic religion and a world religion. This is done by examining the historical flow of theory regarding 'nationalistic religion' or 'minjung religion' which have long been discussed in Korean society. Also examined is the case of Won Buddhism which likewise aims to simultaneosuly be both a nationalistic religion in Korea and a world religion abroad.

Development of Physical Fitness Standard Indicators According to the Bone Age in Youth (유소년의 골연령에 따른 체력 표준지표 개발)

  • Kim, Dae-Hoon;Yoon, Hyoung-ki;Oh, Sei-Yi;Lee, Young-Jun;Cho, Seok-Yeon;Song, Dae-Sik;Seo, Dong-Nyeuck;Kim, Ju-Won;Na, Gyu-Min;Kim, Min-Jun;Oh, Kyung-A
    • Journal of the Korean Applied Science and Technology
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    • v.38 no.6
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    • pp.1627-1642
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    • 2021
  • This study aims to evaluate physical fitness according to the bone age of youth, and ultimately provide basic data for balanced development of youth through physical fitness standard indicators according to the bone age. A total of 730 youth aged 11 to 13 years in bone age and 11 to 13 years in chronological age were selected as subjects; and after taking X-ray films to calculate the bone age, they were evaluated by using the TW3 method. A total of 2 components in physique, which were stature and weight, were measured using a stadiometer(Hanebio, Korea, 2021) and Inbody 270(Biospace, Korea, 2019). A total of 7 components in physical fitness were measured as well, which included muscular strength (Hand Grip Strength), balance (Bass Stick Test), agility (Plate Tapping), power (Standing Long Jump), flexibility (Sit&Reach), muscular endurance (Sit-Up), and cardiovascular endurance (Shuttle Run). Descriptive statistics and independent t-test were conducted for data processing using the SPSS PC/Program(Version 26.0), and it was considered significant at the level of p< .05. The results of this study may be summarized as follow. First, the result of comparing the bone age and the chronological age of 11 to 13 years old in physical fitness, males showed significant difference in muscular strength, power, muscular endurance, and cardiovasular endurance. In females, muscular strength, balance, agility, power, flexibility, muscular endurance, and cardiovascular endurance showed significant difference. Second, physical fitness standard indicators were presented for each gender and age (11-13 years old) of youth according to the bone age; and based on this, physical fitness standard indicators, which are basic data for physical fitness evaluation according to the bone age of youth, were presented.