Infeed Control Algorithm of Sorting System Using Modified Trapezoidal Velocity Profiles

김기학,최용훈,정훈 한국전자통신연구원 2015 ETRI Journal Vol.37 No.2

This paper applies acceleration/deceleration control–based velocity profiles to an infeed control algorithm for a cross-belt-type sorting system to improve the accuracy and performance of the system’s infeed. The velocity profiles are of a trapezoidal shape and often have to be modified to ensure that parcels correctly synchronize with their intended carriers. Under the proposed method, an infeed line can handle up to 5,600 items/h, which indicates a 40% increase in performance in comparison with its existing handling rate of 4,000 items/h. This improvement in performance may lead to a reduction in the number of infeed lines required in a sorting system. The proposed infeed control algorithm is applied to a cross-belt-type sorting system (model name: SCS 1500) manufactured by Vanderlande Industries.

‘국토시론 ㅣ 부동산 서비스산업과 소비자 보호’를 읽고 / ‘특집ㅣ모바일 부동산중개에서의 소비자 보호방안’을 읽고

김기학,한상대 국토연구원 2018 국토 : planning and policy Vol.439 No.-

‘해외동향 | 영국의 HMO 주택임대 운영 사례와 시사점’을 읽고 외

김기학,유민아 국토연구원 2017 국토 : planning and policy Vol.432 No.-

주자의 풍수이론과 제례문화의 연관성 -산릉의장을 중심으로-

김기학 동아시아고대학회 2020 동아시아고대학 Vol.0 No.59

This paper will shed light on the Feng Shui Thought and ritual culture of the intellectuals in Song Dynasty according to the Feng Shui Thought of Chu Hsi inherent in San Reung Ui Jang(山陵議狀). In addition, it will take a look at Chu Hsi’s viewpoint and the stance of contemporary intellectuals regarding the Li-Gi Theory(理氣論) and Hyoung-Gi Theory(形氣論) of Feng Shui which have been always considered problems in Feng Shui geography and will keep track of what is the interrelationship between the Feng Shui Thought and the ritual culture. In the case of Chu Hsi’s stance on Feng Shui, Hyoung-Gi Theory(形氣論) prevails over Li-Gi Theory(理氣論). And, he put more importance on Hyeol(穴), a kind of natural pathways for the energy, in Hyoung-Gi Theory(形氣論) and placed emphasis on Hyeol-Jeung Method(穴證法) accordingly while using Do-Jang Method(倒杖法) according to the mountain range(龍脈). The Do-Jang Method is about “will the grave site, that is to say the body and soul, be located in higher, lower, or middle places, or on the side according to vein?”. On the other hand, in the case of Chu Hsi’s Hyeol-Jeung Method, it is about “whether there is water in the grave site, the soil of the grave site is solid or fragile?, or will you dig in the grave site deeply or not?” Chu Hsi actually experienced them by actually digging the grave yard. Therefore, it has been found that Chu Hsi sought phenomena and empirical factors. The Chu Hsi also asserted the sympathized relation. However, for him, the sympathized relation is the selective sympathized relation. The sympathized relation presented in general Feng Shui asserted that if you worship the body and spirit of your ancestors in good land, it will bring all descendents good luck. But, the Chu Hsi said that the sympathized relation occurs, but it depends on the selective choice. This paper will follow the track of what is the basis for the Chu Hsi’s opinion. This paper will also examine the Chu Hsi’s viewpoint on the ritual culture. For him, the ritual culture is an important factor towards the completion of personality and becomes a special matter that forms an inseparable relationship regarding the ancestors’ safety and the prosperity of descendants. Furthermore, the ritual culture is not just about respecting ancestors for him. The Chu Hsi’s Feng Shui Thought had a great influence on the Feng Shui Thought and ritual culture in the Joseon Dynasty period. Where King HyunJong talked to Song Siyeol about the procedure of moving the royal tombs, recorded in the Annals of the Joseon Dynasty, known as Joseon Wangjo Sillok, Song Siyeol responded to it based on the ritual and Chu Hsi Theory. This is the case that the Chu Hsi’s Feng Shui Thought had a great influence on the Feng Shui Thought and ritual culture in the Joseon Dynasty period. Understanding the Chu Hsi’s Feng Shui Thought is also a way of understanding the Feng Shui Thought and ritual culture in the Joseon Dynasty period. 본고에서는 「산릉의장」에 내재한 주자의 풍수사상에 의거하여 그 시대(송나라) 지식인들의 풍수사상과 제례문화를 조명해 볼 것이다. 또 풍수지리에서 항상 문제점으로 남아있는 풍수 이기론과 형기론에 관하여 주자의 시각과 동시대 지식인들의 입장을 살펴보고, 이러한 풍수사상이 제례문화와 어떤 연관성을 갖는지 추적할 것이다. 주자의 풍수에 관한 입장은 이기론(理氣論)보다 형기론(形氣論)과 기감론(氣感論)을 우선한다. 그리고 형기론 중에서 혈(穴)을 중요하게 생각하며, 용맥(龍脈)에 따른 도장법(倒杖法)을 사용하고, 또한 혈증법(穴證法)을 중요시 한다. 도장법은 맥(脈)에 따라서 묘택(墓宅), 즉 형신(形神)을 높은 곳에 모실 것인가? 낮은 곳에 모실 것인가? 용맥의 가운데로 모실 것인가? 한쪽으로 모실 것인가? 하는 문제이다. 주자의 혈증법은 묘택에 물이 있는가? 없는가? 묘택의 흙이 단단한가? 부서지는가? 묘택을 깊게 팔 것인가? 낮게 팔 것인가를 실증하는 문제이다. 주자는 실제로 땅을 파면서 이것들을 직접 경험하였다. 이로 볼 때 주자는 현상과 실증적인 것을 추구하였다는 것을 알 수 있다. 주자는 또한 기감(氣感)에 따른 동기감응도 주장한다. 그러나 주자에 있어서 동기감응이란 선택적인 동기감응이다. 일반 풍수설에서 제시하는 동기감응은, 조상의 형신을 좋은 땅에 모시면 모든 자손이 발복한다고 주장한다. 그러나 주자는 동기감응은 일어나지만, 그런 현상은 제례를 통한 제한적 선택에 의한다고 말한다. 본고에서는 주자의 이러한 주장이 어디에 근거하는가를 추적하겠다. 본고에서는 주자의 제례에 대한 입장도 살펴 볼 것이다. 주자에 있어서 제례는 인격의 완성으로 가는 중요한 요소이며, 조상의 안위와 자손의 번창에 관련하여 불가분의 관계를 형성하는 특별한 기제가 된다. 주자에 있어서 제례는 단순히 조상 공경에 머무는 것이 아닌 것이다. 주자의 풍수사상은 조선시대 풍수사상과 제례문화에 상당한 영향을 미쳤다. 조선왕조실록에 현종이 천릉의 절차를 송시열에게 의논한 기록에서 송시열은 의례와 주자설에 입각하여 답변한다. 이것은 주자의 풍수사상이 조선의 풍수와 제례문화에 영향을 준 사례이다. 그러므로 주자의 풍수사상을 이해하는 일은 조선의 풍수사상과 제례문화를 알 수 있는 일이기도 하다.

靑少年의 體脂肪率 推定과 肥滿判定 基準作成

金基學 慶北大學校 體育科學硏究所 1992 체육과학연구지 Vol.8 No.-

This study was conducted to estimate the percentage of body fat and to draw up evaluating norms by analizing the tendency of obesity in adolescents. The subjects employed were 2,442 male and female students aged between 12 and 17 years of middle and high schools which are located in medium and small city and big city. Their height, body weight, electrical impedance, and skinfold thickness were measured to calculate body density, and then the percentage of body fat, body fat, lean body mass(LBM), and total body water(TBW) were yield from body density. Validity examination in estimation of % body fat by means of skinfold thickness method was performed through stature indexes such as KI, BMI, RI, and PI which were calculated from height and body weight. The regression equation by independent variables such as body weight, skinfold thickness, height, electrical impedance, and BMI was drawn up to predict body density. Also evaluating norms for obesity by body weight, skinfold thickness, and BMI were drawn up respectively 4 groups;male and female in both middle and high school students. The results obtained are summarized as follows : 1. Percentage of body fat 1) The percentage of body fat by skinfold thickness method was revealed 16.57±3.85% in middle school boys, 20.40±4.97% in middle school girls, 16.41±6.77% in high school boys, and 21.86±4.46% in high school girls. Body density was revealed 1.0610g/㎖, 1.0517g/㎖, 1.0615g/㎖, and 1,0481g/㎖ respectively. In comparision of interregion, percentage of body fat in medium and samll city students was much higher than big city, but showed no difference in middle school and significant difference in high school(p<.001). 2) The percentage of body fat by BI method was 18.58±4.14% in middle school boys, 24.18±5.26% in middle school girls, 16.71±2.97% in high school boys, and 27.41±4.38% in high school girls. And in any case, it revealed higher values than the percentage of body fat obtained by skinfold thickness method. 2. Validity of skinfold thickness method 1) In boys, the correlation between body density and skinfold thickness revealed a significant correlation(p<.001) over all age. In girls, it showed a significant correlation as boys but it was more or less a low value. 2) In correlation among body density by BI method, physique, and stature indices, height and KI index showed no or low correlation, and BMI, RI, and RI index showed high correlation(p<.001) over all age. 3) In correlation between body composition by BI method and that by skinfold thickness method, it revealed high correlation among Db1, %Fat1, Fat1, LBM1, Db2, %Fat2, LBM2, and Fat2 over both male and female in middle and high school students. Therefore, we can interpret that the estimation of %body fat by skinfold caliper method has a sufficient validity. 3. Estimation equation of %body fat Multiple correlation coefficient of estimation equation of %body fat for each subject was about 0.99. The estimation equation was composed by means of skinfold thickness, electrical impedance, and BMI in boy's middle and high school students, and was drawn up from value of electrical impedance and BMI in girl's middle and high school students. Therefore, we can assume a body fat more validly by using above two variables including electrical impedance than by using only skinfold thickness. 4. Evaluation norms for obesity 1) The norms by skinfold thickness method were 33.5㎜ or more in boy's middle school students, 38.0㎜ or more in girl's middle school students, 40.3㎜ or more in boy's high school students, and 40.9㎜ or more in girl's high school students respectively. The ranges of obesity tendency were 26.4-below 33.5㎜, 32.0-below 38.0㎜, 33.7-below 40.3㎜, and 35.0-below 40.9㎜ respectively. 2) The norms by body weight were 68.5㎏ or more in boy's middle school students, 65.4㎏ or more in girl's middle school students, 76.7㎏ or more in boy's high school students, and 67.3㎏ or more in girl's high school students respectively. 3) The norms by BMI were 25.9 or more in boy's middle school students, 26.3 or more in girl's middle school students, 26.1 or more in boy's high school students, and 27.1 or more in girl's high school students respectively. The ranges of obesity tendency were 22.9-below 25.9, 23.3-below 26.3, 23.5-below 26.1, and 24.2-below 27.1 respectively.

아톰안테나 - 원자력 유전자, 그리고 인류의 미래

김기학,Kim, Gi-Hak 한국원자력산업회의 2010 원자력산업 Vol.30 No.4

‘국토시론: 도시 경쟁력의 핵심 과제, 도시방재’를 읽고 외

김기학,채지희 국토연구원 2016 국토 : planning and policy Vol.418 No.-

男子 大學生의 體力 Test Battery에 關한 硏究

金基學 慶北大學校 1990 論文集 Vol.49 No.-

The purpose of this study was to develope a test battery and evaluation scales for measuring the physical fitness of male college students. 125 male college students, aged 18 to 20, participated as subjects and were administered 20 test items. After the test, estimation equation of factors and evaluation scales for both factor and ability were devised by extraction and interpretation of the factors through factor analysis. The conclusions obtained from this study were as follows: 1. Physical fitness of male college students were composed of 8 factors including explosive strength, speed of changing direction, speed of movement completion, static strength, static balance, static flexibility, muscular endurance, and cardiorespiratory endurance. 2. To measure the interpreted factor, an estimation equation of factors made of standard score was determind, and, by inserting the statistics(mean and standard deviation) of each variable, it was translated into an equation which calculate factor score by using of raw score. 3. A test battery was developed in considering factor loading, reliability, validity, and practicability for each factor. Test items included in the test battery were vertical jump, boomerang run, completion time(back), grip strength, squat thrust, stork stand, trunk extension, and 1500m fast walk. 4. Evaluation scales with 5 grades for both factor and ability were developed to evaluate the test battrry. 5. To develope an estimation scale for ability, mean and standard deviation for each 8 item was divided into 11 grades(from 0 to 10) by C-scale. A perfect score for the test was 80 points. The total score was obtained by applying the raw scores of individuals to this score table. On the basis of the statistics of the obtained total score, the evaluation scale with 5 grades(A,B,C,D, and E) was devised to interpret test scores. ◁표 삽입▷(원문을 참조하세요)

基礎的인 體育統計의 方法

金基學 慶北大學校 師範大學 體育學硏究會 1975 體育學會誌 Vol.1 No.-

運動能力의 因子分析的 硏究의 史的 考察

金基學 慶北大學校 體育科學硏究所 1989 체육과학연구지 Vol.5 No.-

Many studies have been done employing factor analysis,since McCloy, C. H. extracted three factors, i. e. strength, velocity, and coordination, by applying multiple factor solution to motor capacity test battery in 1934. The investigations, studied from the 1930's to 1984, were examined in this study, with the classification of 1) factor solution applied to the factor analysis studies of the motor ability, 2) extracted factors, 3) periodical characteristics, and 4) sex differences. 112 studies were referred, and they could be summarized as follows. The studies discussing the structures of the motor ability in the factor analytic points of view, can be divided into three models, i. e. applying (1) multiple factors, (2) general factors and group factors, and (3) hierarchical factors. Most of the investigations published in America, applied multiple factor model, and Highmore, an Englishman, employed a model applyihg general factors and group factors. However, Matsuura, Inoue, and Nakamura et al., Japanese, suggested a structure of muscular strength and motor ability employing hierarchical factor model. The current trend in the studies on the factor structure of motor ability is to validate the validity and objectivity of the factors and induce a conclusion about factor structures by exrtacting a Robust factor. The Robust factor is extracted in the examination of the rotated factor pattern matrix obtained by several solutions. The solutions commonly applied are Principal component analysis, Principal factor solution, Image factor solution, Canonical factor solution, Alpha factor solution, Maximum likelihood factor solution, etc.. Considering the extracted factors in the domains of strength, agility, coordination, balance, flexibility, endurance, and physique, the factor on the muscular strength was induced most frequently, which suggests that the muscular strength be the most important factor in the motor ability and physical fitness. In addition, muscular strength domain was divided into static, dynamic and explosive strength, and muscular endurance, and induced again as various differentiated factor. With regards to periodical characteristics, the factor analysis studies of the motor ability, begun in the 1930's, have been continued to the 1980's, and the application ranges have been changed from the investigations of the overall motor abilities to the examinations of the individual factors. The investigations on the sex differences of motor ability have been progressed from the comparative studies of fitness for performance to the examination of the sex differences of the factor structures. This part, in particular, escaped from simple comparative studies of the factor structures, have a tendency of applying a comparative study method based on communality of factor pattern matrix, factor similarity, correspondence to the hypothesized factor, simpleness of the factor interpretation, simple structures of the factors, etc..