대형유통업체의 농산물 구매특성과 산지의 대응방안

이병서,위태석 한국식품유통학회 2003 食品流通硏究 Vol.20 No.2

This study discussed the large scale retailers’ preference and perception to the trading behavior and quality characterstics of farm products. Results are as follows : (1) The differentiation and quality uniformity are important factors in brand management. (2)Lager scale retailers want to deal with more environment-friendly products, but the procurement stability, quality trustworthiness, and crop assortment are still in the process of improvement. (3) It is important to keep uniformity of both external and internal quality factors in grading. (4) Large scale retailers prefer the products of small0sized boxes, but farmers have to consider the price premium and cost increase. (5) Farmer group feel that they have relatively weak bargaining power as compared with large scale retailer . (6) It is important to reduce the information asymmetrictiy. Farmers group need to inform the large scale retailers of farm level information. This may reduce large scale retailers searching cost of farm products.

Web을 이용한 학습평가 시스템의 구현

이병태 명지대학교 증권보험대학원 1998 논문집 Vol.- No.2

마이크론 크기의 Poly(Ethyl Methacrylate) 분산 미립자 형성에 관한 연구

김병철,손태원,이기창 慶尙大學校生産技術硏究所 1991 生産技術硏究所論文集 Vol.7 No.-

Considerable interest has been recently generated by the preparation of large monodisperse polymer particles by dispersion polymerization. In a dispersion polymerization process, the reaction mixture starts out as a homogeneous solution and the resulting polymer precipitates as spherical particles. The present study focused on dispersion polymerization of Ethly Methacrylate in water-ethanol mixture with a Azo initiator and a polymer stabilizer, poly(vinyl pyrrolidone) with an anionic costabilizer, Aerosol MA. Effects of polymerization parameters, such as monomer concentration, initiator concentration, stabilizer concentration, different molecular weight of stabilizer, comonomer concentration, and polymerization temperature on average particle size and size distribution have been investigated. The polymerization recipe of preparation of uniform PEMA particles in 2-6 ㎛ size range has been also made.

일본의 도매시장법 개정과 시사점

위태석,이병서,황규석 한국식품유통학회 2004 食品流通硏究 Vol.21 No.1

For the last few years, the wholesale market system in Japan has been experiencing a lot of changes in the related sectors. The greatest changes in the environments surrounding the wholesale market were enlargement of the producers' cooperatives, increase of agricultural products marketed in the outside of the wholesale market system, and management aggravation of the related businessmen. These changes resulted in the revision of the Wholesale Market Law in 1999 to cope with the social needs successfully. Major purposes of the revision of the law would be summarized as follows : 1. To improve management ability of the related businessman 2. To improve dealing method in the Central Wholesale Market 3. To promote reorganization of the wholesale market

수수×수단그라스 交雜種과 大豆 間作栽培時 生育段階에 따른 刈取回數 및 生育特性, 乾物收量 粗蛋白質收量에 미치는 影響

全炳台,李相武 建國大學校 自然科學硏究所 1995 建國自然科學硏究誌 Vol.6 No.-

A field experiment was conduted to evaluate growth characteristics, cry matter and crude protein yield according to in Sorghum×Sudangrass hybrid-Soybean intercropping, and number of practicable cutting frequency and decide ideal harvasting time for use of forage and silage. Experiment design was arranged with 14 different treatment as a randomized block design(the same of monocropping and intercropping did 170cm, 220cm, boot head, dough, and yellow stage). The mean plant length of intercropping treatment at the same treatment of growth stage was high at all treatment than monocropping. Soybean showed the highest at dough stage treatment as 145cm but, to boot stage treatment but 220cm treatment showed on the contraty the shortest as 93cm. The intercropping was higher than monocropping at the leaf length of sorghum×sudangrass hybrid, but the leaf width showed multifarious according to number of practicable cutting. Leaf length of soybean was increased from 170cm treatment to boot stage treatment, but decreased from head stage treatment to yellow stage treatment. The stem diameter(means) of intercropping sudangrass at the same treatment of growth stage was higher than monocropping, Especially, in the stem diameter(means) of soghum×sudngrass hybrid, intercropping treatment of boot stage treatment ws the thickest as 11.5mm, monocropping treatment of head stage treatment was the lowest as 7.6mm, stem hardness of intercropping and monocropping at the first cutting time was rapidly hardening after boot stage. Also, In the soybean, stem hardness was rapidly hardening after headstage treatment, and yellow stage treatment was almost hardness as wood. Intercropping treatment at the same treatment of growth stage was higher than monocropping at the leaf numbers(1st, 2nd, 3rd, and 4th cutting time). Leaf numbers of soybean was increased from 170cm treatment to boot stage treatment, but decreased from milk stage treatment to yellow stage treatment. In the leaf ratio of sorghum×sudangrass hybrid (means), intercropping was decreased compare to monocropping. Especially, intercropping was showed below 15%after boot stage. Also, leaf ratio of soybean was high to early growth, but dough and yellow stage treatment were lower than other treatments as 18.8% and 15.0% at leaf ratio Fresh weigh of monocropping treatment at the same treatment of growth stage as highest as 101,700kg/ha, but yellow treatment was the lowest as 67,794kg/ha. Dry matter yield showed a little difference between intercropping and monocropping from 170cm treatment to boot stage treatment, but showed high difference after milk stage. Especially in intercropping treatment, dough stage was the highest as 21,161 kg/ha, but 170cm treatment was the lowest as 12,929kg/ha. In the intercropping and monocropping, 170cm treatment was able to cutting 4 frequency and 220cm treatment and boot stage treatment were able to cutting 3 frequency a year without yield difference. But yellow stage was able to cutting 1 frequency because 2nd cutting showed very low dry matter yield. Protein yield of intercropping treatment at the same growth stage was higher than monocropping on the contrary fresh yield and dry matter yield. Especially, head stage treatment of intercropping treatment was the highest as 1,684kg/ha. The protein yield was high at the intercropping in order of head stage〉milk stage〉boot stage〉dough stage〉220cm〉170cm.

靑刈飼料를 위한 大豆品種의 生育特性 및 生産性 比較에 關한 硏究

金炳台,李相武 建國大學校 自然科學硏究所 1994 建國自然科學硏究誌 Vol.5 No.1

In order to select the forage soybean of high dry matter and protein yield, this experiment was investigated to compare growth characteristics and dry matter yield of forage soybeans Jangbaek was taller than other varieties while Paldal was the shortest in the plant length of average(p〈0.01). Jangyeob was the highest in the leaf length(p0.05), Baekcheon was the highest in the leaf width. Hwangkeum was the highest in the number of leaf and stem diameter. Baekcheon was the highest in the leaf ration, Paldal was high in the resistance to lodging. Among the ten varieties used, Paldal was classified as early maturing variety and Danyeob, Baekcheon and Togyu were classified as lately maturing varieies. In average stem hardness of forage soybean, Paldal was the highest as 3.3kg/㎠, but Bangsa was the lowest as 1.8kg/㎠. The palatability was high in the order of Jangyeob〉Hwangkeum〉Danyeob〉Baekun〉Jangbaek. In total dry matter yield. Jangyeob was the highest of all varieties as 5,861kg〉ha, but Bangsa was lowest as 3,408kg/ha. In protein content, Danyeob was the highest as 20.1%(p〈0.05). In protein yield, Jnagyeob of high dry matter was the highest. Consequently, Jangyeob and Baekun shown high palatability, dry matter yield and crude protein yield could be recommended as a optimum soybean varieties for fresh-cut forage.

골반골절 환자에서 출혈의 정도를 반영하는 분류

황태식,손대곤,김인병,장석준 大韓應急醫學會 1996 대한응급의학회지 Vol.7 No.1

The causes of death of pelvic bone fracture are hemorrhage, associated internal organ injuries, sepsis, and multi-organ failure, among which hemorrhage still remains as the leading cause of death. While previous classification for pelvic bone fracture was focused on orthopedic treatment, Pennel & Sutherland suggested a new classification according to the pelvis AP film took in the emergency room. Since this classification supposedly evaluates hemorrhage from pelvic bone fracture, we are reporting on the efficiency of this classification. Out of all the 150 patients admitted to Yong Dong Severance Hospital Emergency Room from 1992, Jan. through 1994, Dec. due to pelvic bone fracture, 18 people with incomplete medical record and X-ray film excluded from the study. The study was done Cohort method and t-test was used. According to the new classification, the unstable fracture had a much more bleeding amount regardless of the type, and type I stable fracture bled more than all the other stable fracture. These were statistically meaningful. Also, there was no differences in the type of fracture when ISS(Injury Severity Scale), GCS(Glasgow Coma Scale), and associated injury were compared. In conclusion, previous classification was done according to orthopedic treatment and this classification could be done only after pelvis X-ray series and pelvic bone CT was performed. Therefore much more time is consumed, more stress is put upon the patient and no comparisons can be made in performing emergency care. On the other hand, modified Pennel &-Sutherl`s classification can be simply classified in the emergency room by taking pelvis AP film only and the bleeding amount can be measured according to the type. Therefore, this classification can be helpful in performing emergency care.

Austenite Stainless鋼의 高溫强度및 破壞擧動에 관한 硏究(Ⅰ) : Creep 强度와 破壞擧動에 관하여 Creep Strength and Fracture Behavior

全泰玉,周原植,金福仁,崔병국,吳世旭 東亞大學校 1980 東亞論叢 Vol.17 No.2

Austenite stainless steel 년 316 has heat treated to austenite structure by heating at 1100℃ for 1hr and suddenly cooling. These specimens has been dealed with aging treatment at 700℃ for 0hr, 2hr, 10hr, and 100hr separately, and then conducted by creep test on the uniaxial state of stress in atmosphere of 600℃. The experimental results are obtained as follows. 1) Creep rupture stain rate has increased by the increasing of aging time. 2) Creep rupture time have had large affect of aging time comparing with 0hr aging specimen and increased by 20%, 40%, and 60% separately for 2hr, 10hr, and 100hr aging specimen. The empirical formulas of creep rupture time "t" as follows. (aging time are in parenthesis) t?=2.297×10? t?=8.810×10? t?=2.951×10? t?=1.178×10? 3) Creep constant "n" has increased, "k" decreased and creep limit increased by increasing the aging time. Then creep strain rate has decreased and increased by increasing the aging time and stress. The empirical formulas as follows. ε?=3.326×10? ε?=1.905×10? ε?=1.347×10? ε?=3.465×10? 4) The creep strain rate multiplied by creep rupture time has constant value according to property of material and belongs to the range of parallel line at logarithmic graph paper. 5) Hardness has increased by the increasing of aging time and intergranular hardness is higher than transgranular hardness. 6) The micro cracks occur from wedge crack and cavitation crack at grain boundary and exist at the surface of specimen and the surface of longitudnal section. 7) High stress and aging specimens have mostly wedge crack. Low stress and nonaging specimens have mostly cavitation crack. 8) Rupture surface of higher stress has shearing fracture of about 45° inclination, and has tendency of fracture by directing perpendicular to the axis for decreasing creep stress and also has same phenomenon for occurrence and propagation of crack.

산지간 출하전략과 시장성과의 비교

위태석,이병서,황규석 한국식품유통학회 2003 食品流通硏究 Vol.20 No.3

This paper intends to find out the establishment possibility of competition superiority based on vegetable's selling conditions by analyzing the marketing behavior regarding the selling conditions and the middlemen's reaction to the producer's marketing behavior. And the survey on the middlemen indicates that the producer's selling conditions, as well as vegetable's quality itself, are regarded as an important factor when middlemen make a purchasing decision in the wholesale market. And the comparative analysis on the selling profits also shows that Nagano Prefecture has a competitive edge over Iwate Prefecture in the Tokyo Metropolitan Area Wholesale Markets where two are competing for lettuce market. Finally, the middlemen have a preference for Nagano' selling conditions rather than Iwate's ones overly. The results of this study tell us that the competitive strategy behavior in term of selling conditions in the producing district is making a success to some extent.

급속응고된 N-type Bi₂Te_(2.75)Se_(0.15) 열전재료의 미세조직과 열전특성에 미치는 압출비의 영향

김태경,이상일,임종호,손현택,김택수,천병선 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.1

The n-Type thermoelectric compounds of Bi₂Te_(2.75)Se_(0.15) doped with 0.1 wt% SbI₃ were fabricated by gas atomization process and extruded under ratio of 16:1 and 28:1 at 450℃. The effect of extrusion ratio on the microstructures and thermoelectric properties were investigated by a combination of microscopy, XRD and thermoelectric properties. Grains of extruded bars are smaller than those of heated powder at extrusion temperature (450℃) due to the dynamic recrystallization but with increasing the amount of plastic deformation, grains of specimen extruded with 28:1 were slightly coarse. The compressive strength of hot extruded bar under 28:1 is 160 MPa and with decreasing the extrusion ratio to 16:1, the value is 250 MPa. The Seebeck coefficient a and electrical resistivity p were decreased with increasing ratio, while thermal conductivity x was increased. this results from decrease of carrier scattering and increase of carrier mobility. Extruded bar under ratio of 16:1 shows the higher value of figure of merit (Z=2.50x10^(-3)/K) than that of 28:1 (Z=2.07x10^(-3)/K). (Received June 24, 2004)