• Journal of Broadcast Engineering
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• v.13 no.5
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• pp.574-585
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• 2008

3D sound is of central importance for the virtual reality system, and is becoming increasingly important for the auditory displays and for the human-computer interaction. In this paper, we propose a novel real-time 3D sound representation system for virtual reality. At first, we propose a calculation method of the impulse response for virtual space. To transmit the information of the virtual space, we propose an enhanced DXF file type that contains the material information. And then, we implement the multi-channel sound panning system. we perform the experiment based on computer simulation and prove the utility of the proposed method.

• Journal of Institute of Control, Robotics and Systems
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• v.21 no.11
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• pp.1057-1063
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• 2015

This paper proposes a new nonlinear filtering algorithm that combines the unscented Kalman filter (UKF) and the finite impulse response (FIR) filter. The proposed filter is called the unscented Kalman/FIR hybrid filter (UKFHF). In the UKFHF algorithm, the UKF is used as the main filter, which produces state estimates under ideal conditions. When failures of the UKF are detected, the FIR filter is operated. Using the output of the FIR filter, the UKF is reset and rebooted. In this way, the UKFHF recovers from failures. The proposed UKFHF is applied to indoor human localization using wireless sensor networks. Through simulations, the performance of the UKFHF is demonstrated in comparison with that of the UKF.

• Journal of the Korean Society of Clothing and Textiles
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• v.16 no.1 s.41
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• pp.123-136
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• 1992

The art which has been beginning and existing with the origin of human civilization had originated from human's play impulse, so called instincts incidentally and inevitably. The highly developed material civilization resulted in human alienations, and by turn to the primitive in order to overcome human alienationsalso they obtained creative inspiration from this activity and, in the result, created various animated arts. In this respect, the purpose of the study is to identify the primitivism in Lacroix fashion and the relationship between the modern art and in his design regarding the external plasticity and internal symbolism. For this purpose, 1 analyze the factors of primitivism in Lacroix fashion, and demonstrates the affinity between the primitivism, which is represented in his dress and the modern painting through the comparision and analysis of works, and dresses of Lacroix. Finally, Ican find out the guie close analogy of primitivism between the modern painting and the Lacroix's dress. That is, even the Lacroix fashion and modern painting are in different genre, they pursued the same way in the same category of art, we have a reperception of that fashion can be positioned in line with the art, as its one genre.

• YAKHAK HOEJI
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• v.57 no.5
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• pp.330-336
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• 2013

"The Act on Medication Treatment of Sexual Impulse of Sex Offenders" known as chemical castration has been effective since July 2011 in Korea. According to the law, monitoring of male sex hormone in urine is enforced to request National Forensic Service more than once a month after injection of medicine designed to reduce sex impulse. We established a rapid and sensitive method for the monitoring of testosterone (T) and epitestosterone (E) in human urine by liquid chromatography with tandem mass spectrometry (LC-MS/MS). Three mL of urine was pretreated by solid-phase extraction for purification and performed enzymatic hydrolysis. The pretreated samples were extracted twice with 2 ml of ethyl acetate and n-hexane (2 : 3). The separation was applied on Thermo Hypersil GOLD C18 column ($1.9{\mu}m$, $100{\times}2.1mm$). A gradient elution of methanol and water of 0.1% formic acid were used as mobile phase and the retention time was less than 10 min. LC-MS/MS system coupled with an electrospray ionization source was performed in multiple reaction monitoring mode. The transitions of the analytes executed as following: m/z $289{\rightarrow}97$, 109 for T and E, m/z $292{\rightarrow}109$ for $T-d_3$ and $E-d_3$ as internal standards. The validation results of the method were satisfactory. The limits of detection were 0.05 ng/ml and the limits of quantification were 0.1 ng/ml. This method was successfully applied to real human urine sample. The developed method will be useful for monitoring T/E ratio in urine of sex offenders.

• Korean Journal of Human Ecology
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• v.8 no.2
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• pp.327-337
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• 1999

Primitive men's primordial formative activity derives from incarnation contained in intensive vitality and strong creativity mind. The trend of modern fashion requiring the boundless imagination can be called that it, just, itself, has something in common with basic spiritual activity that primitive men had. What is concerning how modern fashion designers have developed formative language through enchanting primitive art is as follows. 1. The nature's mysterious power appears to be transformed into personified image. The incarnation for acquiring beauty, power, prestige of genius appears in the form of personification, making use of mask in modern fashion. 2. As for primitive men, the whole universe has a potentiality as a symbol. The symbolism of primitive art based on religion and myth appears in modern art as the form of presenting oppositional objects together in one space. 3. Primitive art is the purest form and the most unpolluted. This shows the natural quality being assimilated into nature, which is expressed in modern fashion as intensity, free-spirit, simplicity, etc. 4. The primitive men's anxiety to the outside world appears as impulse. The geometrical form of primitive art occurred in the shape of impulse appears in expressional form of modern fashion. 5. The real existence in primitive art inducing real materials and objects, in themselves, into formative world appears in modern art in the way of expression such as repetition, enlargement, exact reproduction.

• Korean Journal of Human Ecology
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• v.20 no.2
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• pp.401-412
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• 2011

국가들 간의 차이는 국제적 소비자행동 연구의 근간이 되며 글로벌기업의 전략 구상에 중요한 변수로 작용한다. 본 연구에서는 의복충동구매에 대한 국가간 이해를 증진시키기 위해 한국과 미국의 대학생들을 대상으로 의복충동구매와 구매에 영향을 미치는 쇼핑감정에 차이가 있는지를 살펴보고 쇼핑감정이 의복충동구매에 어떠한 영향을 미치는지를 살펴보고자 한다. 선행연구를 바탕으로 질문지를 개발하였고, 한국(N = 412)과 미국(N = 290) 각각의 대도시에 위치한 대학교를 무작위 선정하여 정규강의시간 전후에 자원자들을 대상으로 자료를 수집하였다. 분석 결과, 미국대학생들에 비해 한국대학생들은 구체적 구매의도가 없는 상태에서 점포를 둘러본 후에 구매할 것을 결정하는 등의 계획적 충동구매나 다른 목적으로 점포에 들렀다가 계획에 없었던 필요한 것 혹은 기억나는 의류제품을 구매하는 등의 상기된 충동구매를 더 많이 하는 경향이 있었다. 그러나 미국 대학생들의 경우, 구매의도는 없었으나 새로운 스타일이나 최신 의류제품을 보았을 때 충동적으로 구매를 하는 패션지향적 충동구매가 한국대학생들에 비해 더 많이 나타나는 경향이 있었다. 또한 소비자들이 쇼핑할 때 느끼는 쇼핑감정 중 긍정적인 쇼핑감정은 미국대학생들이 한국대학생들보다 더 많이 느끼는 것으로 나타났다. 한국과 미국 대학생들은 모두 쇼핑과정에서 긍정적 감정을 느낄 때 여러 유형의 의복충동구매 가능성이 높게 나타났으나 부정적 쇼핑감정이 발생했을 때는 한국 대학생들만이 패션지향적인 충동구매를 하는 경향이 있었다. 이러한 결과는 의류제품을 쇼핑할 때 두 나라 대학생 모두에게 쇼핑감정 특히, 긍정적 감정은 구매의도를 자극하여 충동구매를 조장하는 중요한 역할을 담당함을 보여주었다. 이러한 연구결과는 의복충동구매와 쇼핑감정 간의 관계를 이해하고자하는 연구자들과 리테일러들에게 필요한 정보들을 제공해준다.

• Korean Journal of Human Ecology
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• v.5 no.1
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• pp.33-42
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• 1996

The purpose of this study is to investigate cosmetic purchasing behaviors among female college students in Cheongju area. Three-hundred female college students who were attending universities in Cheongju area were selected. Questionnaire survey method and SPSS computer program were utilized. The findings of this study were as follow: First, 8.5% of monthly disposible money was spent for cosmetic and this amount of cosmetic expenditure was a little burden to female college students. Second, most female college students began to make up from freshmen or sophomore. And they were making up for self-satisfaction rather than showing off. Third, the purchasing behaviors of female college students were most affected by TV advertisements. Fourth, female college students thought that cosmetic is a necessity rather than luxury for them. And they were considering quality when they buy cosmetic first and price second. Fifth, female college students showed that rather low level of impulse purchasing behaviors.

• The Research Journal of the Costume Culture
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• v.11 no.4
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• pp.551-561
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• 2003

The regulations for costume were set to improve people's moral fiber and cultural standards. In the 17th and 18th century, the main aim of this regulation was to prohibit luxury. But being the turning point to a modem state, with breaking social status and development of commerce, industry, and the mind of imitation, regulation for luxury wasn't enforced, but rather it brought many revolutionary changes in costume. Restraining human impulse to express beauty was no longer subject to regulation. Therefore, people started to recognize the human figure with shorter Jegory(저고리) and strengthened ceremonial capacity by broadening po's(포) sleeves. The silk fabrics were the most popular fabric during this era, special patterns were added for decoration and also for blessings. Complementary colors were used for contrast on the collar (깃), cuffs (끝동), Gyotrnagi (곁마기), and sash (고름). This color composition gave a younger and more active look. And with red stripes on the sleeves, it emphasized the beauty of the color arrangements as well as providing protection from the devil.

• Explosives and Blasting
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• v.41 no.4
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• pp.1-8
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• 2023

On August 4, 2020, 2750 tons of ammonium nitrate stored in a storage warehouse at the Port of Beirut exploded. This explosion is said to be the largest ammonium nitrate explosion ever. By applying the TNT equivalency method, TNT equivalent amount corresponding to the explosion energy of 2750 tons of ammonium nitrate was calculated, and it is found to be 856 tons. Overpressure and impulse were calculated in a range up to 3600 m from the blast using the Kingery-Bulmash explosion parameter calculator tool. As the distance from the explosion center increases, the overpressure and impulse decrease exponentially, but the overpressure decreases more significantly, showing that overpressure is more affected by distance than the impact. As a result of applying the damage criteria to evaluate the effects of overpressure and impulse on the structure, the critical distances at which partial collapse, major damage, and minor damage to the structure occur are found to be approximately 500, 800, and 2200 m from the center of the explosion, respectively. The probit function was applied to evaluate the probability of damage to structures and human body. The points where the probability of collapse, major damage, minor damage, and breakage of window-panes to structures are greater than 50% are found to be approximately 500, 810, 2200, and 3200 m, respectively. For people within 200 m from the center of the explosion, the probability of death due to lung damage is more than 99%, and the 50% probability of eardrum rupture is approximately 300 m. The points with a 100% probability of death due to skull rupture and whole body impact due to whole body displacement are evaluated to be 300 and 100 m, respectively.

• Journal of Auto-vehicle Safety Association
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• v.4 no.2
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• pp.37-43
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• 2012

The purpose of this research is to obtain and analyze dynamic responses from human volunteers for the development of the human-like mechanical or mathematical model for Korean males in automotive rear collisions. This paper focused on the introduction to a low-speed rear impact sled test involving Korean male subjects, and the accumulation of the motion of head and neck. A total of 50 dynamic rear impact sled tests were performed with 50 human volunteers, who are 30-50 year-old males. Each subject can be involved in only one case to prevent any injury in which he was exposed to the impulse that was equivalent to a low-speed rear-end collision of cars at 5-8 km/h for change of velocity, so called, ${\Delta}V$. All subjects were examined by an orthopedist to qualify for the test through the medical check-up of their necks and low backs prior to the test. The impact device is the pendulum type, tuned to simulate the crash pulse of a real vehicle. All motions and impulses were captured and measured by motion capture systems and pressure sensors on the seat. Dynamic responses of head and T1 were analyzed in two cases(5 km/h, 8 km/h) to compare with the results in the previous studies. After the experiments, human subjects were examined to check up any change in the post medical analysis. As a result, there was no change in MRI and no injury reported. Six subjects experienced a minor stiffness on their back for no more than 2 days and got back to normal without any medical treatment.