algorithms for deriving and analyzing retroreflectivity influence factors through regression analysis. METHODS : An experimental road lane was created to examine the trends of retroreflectivity and LiDAR intensity values, and a controlled indoor experiment was conducted to identify influencing factors. The optimal algorithm was developed by regression analysis of the experimental data. RESULTS : The significance probability (P-value) through SPSS linear regression analysis was 0.000 for measured height, 0.001 for perpendicular angle, 0.157 for vertical angle, and 0.000 for LiDAR intensity, indicating that measured height, vertical angle, and LiDAR intensity are significant factors because the significance probability is less than 0.05, and vertical angle is not significant. The NNR regression model performed the best, so the measurement data with height (1.2m, 2m, 2.2m) and vertical angle (11.3°, 12.3°, 13.5°) were analyzed to derive the optimal LiDAR Intensity measurement height and vertical angle. CONCLUSIONS : For each LiDAR measurement height and vertical angle, the highest correlation between LiDAR Intensity and retroreflectivity was found at a measurement height of 1.2 meters and a vertical angle of 12.3°, where the model learning accuracy (R2) was the highest.

An effective method for produce munitions effectiveness data is to calculate weapon effectiveness indices in the US military’s Joint Munitions Effectiveness Manuals (JMEM) and take advantage of the damage evaluation model (GFSM) and weapon Effectiveness Evaluation Model (Matrix Evaluator). However, a study about the Range Safety that can be applied in the live firing exercises is very insufficient in the case of ROK military. The Range Safety program is an element of the US Army Safety Program, and is the program responsible for developing policies and guidance to ensure the safe operation of live-fire ranges. The methodology of Weapon Danger Zone (WDZ) program is based on a combination of weapon modeling/simulation data and actual impact data. Also, each WDZ incorporates a probability distribution function which provides the information necessary to perform a quantitative risk assessment to evaluate the relative risk of an identified profile. A study of method to establish for K-Range Safety data is to develop manuals (pamphlet) will be a standard to ensure the effective and safe fire training at the ROK military education and training and environmental conditions. For example, WDZs are generated with the WDZ tool as part of the RMTK (Range Managers Tool Kit) package. The WDZ tool is a Geographic Information System-based application that is available to operational planners and range safety manager of Army and Marine Corps in both desktop and web-based versions. K-Range Safety Program based on US data is reflected in the Korean terrain by operating environments and training doctrine etc, and the range safety data are made. Thus, verification process on modified variables data is required. K-Range Safety rather than being produced by a single program, is an package safety activities and measures through weapon danger zone tool, SRP (The Sustainable Range Program), manuals, doctrine, terrain, climate, military defence M&S, weapon system development/operational test evaluation and analysis to continuously improving range safety zone. Distribution of this K-range safety pamphlet is available to Army users in electronic media only and is intended for the standing army and army reserve. Also publication and distribution to authorized users for marine corps commands are indicated in the table of allowances for publications. Therefore, this study proposes an efficient K-Range Safety Manual producing to calculate the danger zones that can be applied to the ROK military’s live fire training by introducing of US Army weapons danger zone program and Range Safety Manual

The application of flip chip technology has been growing with the trend of miniaturization of electronic packages, especially in mobile electronics. Currently, several types of adhesive are used for flip chip bonding and these adhesives require some special properties; they must be solvent-free and fast curing and must ensure joint reliability against thermal fatigue and humidity. In this study, imidazole and its derivatives were added as curing catalysts to epoxy resin and their effects on the adhesive properties were investigated. Non-isothermal DSC analyses showed that the curing temperatures and the heat of reaction were dependent primarily on the type of catalyst. Isothermal dielectric analyses showed that the curing time was dependent on the amount of catalysts added as well as their type. The die shear strength increased with the increase of catalyst content while the Tg decreased. From this study, imidazole catalysts with low molecular weight are expected to be beneficial for snap curing and high adhesion strength for flip chip bonding applications.

얼핏 전혀 어울리지 않아 보이는 ‘안창호와 사회주의’라는 이 글의 주제는 아주 작은 두 개의 단서에서 출발했다. 그 하나는 『주간조선』 1719호(2002년 9월 5일)에 실린 「[발굴 특종] 77년 만에 밝혀지는 ‘모함 투서’의 진상」이라는 제목의 기사이다. 이 기사에 따르면 “도산 안창호가 미국에서 마지막 독립 운동을 하던 1925년 당시 소련 공산당과 연계가 있다고 모함한 한 투서로 미 정부 당국의 감시 대상 속에서 심문과 가택 수색까지 당한 사실이 77년 만에 처음 밝혀졌다”는 것이다. 그런데 정확하게 말하면 이 기사는 특종이 아니다. 안창호가 ‘공산주의’ 관련 혐의로 조사를 받았다는 사실 자체는 이미 오래 전부터 알려져 있었다. 이 사실이 처음으로 등장한 자료는 《신한민보》1925년 6월 25일자의 「안창호씨도 쏘비에트주의자라고」라는 제목의 기사이다. 안창호가 “미국에서 볼셰비키주의를 선전하므로 미국 법률에 범하였다”는 이유로 추방될 위기에 처해 있다는 것이었다. 한편 김산(본명은 장지락)이라는, 당 시로서는 무명에 가까운 조선인 혁명가의 삶을 그린 책으로 유명한 『아리랑』에도 “1924년(1925년-발표자) 샌프란시스코에서 공산주의 서적을 자택에 소지하고 있다는 이유로 검거 되었지만, 공산주의자가 아니었기 때문에 다음날 석방되었다”는 구절이 나온다. 따라서 1920년대 중반부터 이미 안창호가 ‘공산주의자’라는 소문 때문에 곤경에 처해 있었다는 이야기는 민족 운동 전선에 널리 퍼져 있었던 것으로 보인다. 해방 이후에 안창호의 측근 인물도 한 좌담회에서 이 사실을 언급한 바 있다. 다른 하나의 단서는 김산이 제공한 것이다. 그에 따르면 안창호는 “이 제까지 받은 영향 중 두 번째로 커다란 영향”을 준 인물이었다. 그런 안창호에 대해 김산은 “손문과 중국 민족주의자들이 중국의 복잡다단한 문 제를 해결하기 위하여 맑스주의로 전향함과 동시에 안창호는 공산주의 이론과 전술에 관심을 가지게 되었다. 안창호는 결코 공산주의자가 되지는 않았다. 하지만 아직 미숙한 한국 공산당을 반대한 적이 한 번도 없다”고 평가했다. 안창호가 ‘공산주의자’가 아니면서도 ‘공산주의’에 대해 관심을 갖고 ‘공산당’에 반대하지 않았다는 사실을 강조한 것이 주목된다. 주지하듯이 김산은 민족주의에서 무정부주의로, 그리고 다시 무정 부주의에서 사회주의로 민족 운동의 노선을 바꾸어 나가면서 일제와 투쟁한 인물이다. 민족 운동의 다양한 이데올로기를 두루 섭렵한 뒤 최종적으로는 사회주의자가 된 김산이 안창호를 ‘반(反)공산주의자’가 아니라고 평가한 것이다. 이 글은 어떻게 보면 별로 큰 의미가 없을 것도 같은 이 두 단서에서 출발해 안창호의 또 다른 측면 곧 사회주의 또는 사회주의 운동과의 관련성을 살펴보려고 한다. 안창호는 분명히 사회주의자가 아니었다. 그러면서도 1920년대 이후 민족의 해방과 나라의 독립을 위한 새로운 이데올로기 로서의 사회주의에 관심을 갖고 더 나아가서는 민족 운동 전선을 확대하기 위해서는 사회주의 운동과의 연대가 필요하다는 것을 인정한 것이 안창호였다는 사실을 밝히는 데 이 글의 목적이 있다.

The purpose of this study was to compare the awareness of dietary patterns and health of full-time and employed housewives. The investigation gathered information on general characteristics, dietary lifestyle, nutritional status, and health by questionnaire as well as anthropometric measurements. The subjects included housewives living in Seoul and Gyeonggi Province (86 full-time and 127 working housewives) during November 2009 to January 2010. The average age, height, and weight of the housewives were 45.8±7.6 yr, 161.0±8.4 cm, and 55.7±6.3 kg, respectively. The average monthly income of the households was 3 million to 5 million won (31.4% full-time and 37.0% working housewives), and their average food expense was 200,000 to 500,000 won (46.5% full-time and 48.1% working housewives). More than 90% of the studied homes were nuclear families and the most common number of children was 2 to 3 (79.1% full-time and 76.4% working housewives). The ratio of employed housewives who ate regular meals was 35.4%, but that of the full-time housewives was 48.2% (p〈0.05). Of the working housewives, 7.1% never ate breakfast and the primary reason for skipping breakfast was 'busy in the morning' (61.1%). The type of food that the housewives preferred when eating out was Korean food, both for the full-time and employed housewives (76.0%). All the housewives overate calories and the full-time housewives ate more protein, fat, vitamin A, vitamin B1, vitamin B6, niacin, vitamin C, vitamin E, folic acid, and cholesterol than the employed housewives (p〈0.05). Both the full-time and employed housewives were more satisfied with supper than with other meals. About 30.6% of the full-time and 33.9% of the working housewives had no interest in health, but answered that regular exercise was very important for health (33.3% full-time and 39.7% working housewives). In conclusion, working housewives have poor dietary habits and nutrient intakes, thus substantial measures to improve these problems are urgently needed.

To increase pot life in the formulation mixed with bisphenol F epoxy resin, anhydride-based curing agent, and imidazole-based curing accelerator powders as a paste material for high-speed RFID chip bonding, size variation of the imidazole-based powders and a coating method of the powders were adopted in this study. In experiment with regard to the size variation, the pot life was not outstandingly increased. Through the idea using the coating method, however, the pot life was increased up to 4.25 times in comparison with the addition of initial imidazole-based powders. Consequently, successive bonding of RFID chip could be performed with very short time of 5sec using the suggested formulation having improved pot life.