• Title/Summary/Keyword: Defence Science and Technology

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A Case Study on the Use of Female Human Resources in the Canadian Military and Its Implications (캐나다군 여성인력 활용사례와 그 시사점)

  • In-Chan Kim;Jong-Hoon Kim;Jun-Hak Sim;Kang-Hee Lee;Myung-Sook Hong;Sang-Hyuk Park
    • The Journal of the Convergence on Culture Technology
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    • v.9 no.6
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    • pp.795-799
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    • 2023
  • The Canadian military participated in World War I and felt the limitations of the recruitment system through the continuous shortage of troops caused by the prolonged war, therefore expanded the role and scope of female manpower. The use of female manpower, which began with medical support for the first time, increased its necessity and importance as medical support personnel were dispatched overseas and women's manpower was expanded to combat support missions for the Army, Navy, and Air Force. Since then, the proportion of female manpower has been limited to 1.5% of the total number of employees at the end of the Second World War and the reduction of troops and the dismantling of the women's unit. In this situation, the Austrian Defence Force gradually accepts the recommendation of the Royal Canadian Women's Status Committee to improve the service conditions of women, marking a turning point in expanding the role of women in the Canadian military. The the Austrian Defence Force conducted long-term combat experiments to increase the proportion and role of female manpower, increasing reliability through observation and analysis to prove whether female manpower is suitable for combat troops. Korea also wants to draw implications for the future direction by comparing the history and current appearance of the Canadian military's use of female manpower with the Korean military at a time when the problem of a shortage of troops is emerging due to the recent decline in fertility and low birth rates.

Enhancement of Dyeing Fastness of Artificial Suede (3) (인조스웨드의 견뢰도 향상에 관한 연구 (3))

  • Kim, Kyung Pil;Kim, Hea In
    • Textile Coloration and Finishing
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    • v.28 no.4
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    • pp.280-289
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    • 2016
  • Silica microgel was prepared by sol-gel process and then functional groups, epoxy group and ethoxy group, were introduced on the particle by coupling treatment with 3-glysidoxypropyltrimethoxysilane. The functional silica microgel(functional SiGel) formation was identified using FT-IR spectrometry. Phase stability for DMF solution of functional SiGel, PU resin and pigment was evaluated by Turbiscan Lab. And physical properties of artificial suede including hand values, morphology and dyeing fastness were investigated. The mean particle size and the specific surface area of the functional SiGel were $0.77{\mu}m$ and $380m^2/g$. Mixture containing the functional SiGel, PU resin and pigment was more stable than the functional SiGel-free mixed solution. Artificial suede prepared by the functional SiGel had appearance and feeling close to natural suede. The migration fastness, the solvent wicking fastness and rubbing fastness of the artificial suede were enhanced to 4~5 grades, 4~5 grades and 3~4 grades, respectively.

A Study of Authorized Stockage List Selection using Market Basket Analysis (장바구니 분석을 활용한 ASL 선정 연구)

  • Choi, Myoung-Jin
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.35 no.2
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    • pp.163-172
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    • 2012
  • In this study, It is assumed that customers are both usage unit of spare parts and stores of displaying and selling the goods that are installation unit of having the spare parts. The demand pattern through the effective order of spare parts and issue list in installation unit is investigated based on the assumption. Current ASL (Authorized Stockage List) selection of the army has been conducted in the way of using the analysis result of real usage experiences on spare parts used during the Korea War. For this study, ASL selection criteria and procedures based on army regulations and field manuals are specified. Since the traditional method does not presents the association analysis on spare parts used for the current equipment operating and does not have the clear criterion and analysis system about the ASL selection, in order to solve these problems, it was carried out that the association rule is employed for analyzing relationship between the effective order and issue list of the spare parts in point of the spare parts between usage unit and occurring month about purchase spare parts based on the star-schema table. Finally the new ASL selection way using the analysis result is proposed.

Biological Damage and Risk Assessment of The Wood Cultural Properties in Fire Prevention Area (화재방제구역에 따른 목조문화재 생물손상 및 생물위험도 평가)

  • Kim, Dae Woon;Chung, Yong Jae
    • Journal of the Korean Wood Science and Technology
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    • v.43 no.1
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    • pp.104-111
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    • 2015
  • The three-year inspection of 20 tree stumps in the fire prevention area around the wooden building confirmed that termite colonies had been rapidly spread. In particular, four buildings among thirty one wooden buildings of Songgwang-sa temple were infected by the termite, indicating that the habitate of termite has been spread across the fire prevention area over the temple area. However, a non-destructive microwave diagnosis showed that internal damages have been progressed until now, suggesting a high risk to the building. These results suggest that the fire prevention area should be properly maintained to have harmful element controlled. Therefore, effective methods are required to eliminate tree stumps or wood materials used to establish fire prevention area near wooden buildings.

Application and Process Standardization of Terminology Dictionary for Defense Science and Technology (국방과학기술 전문용어 사전 구축을 위한 프로세스 표준화 및 활용 방안)

  • Choi, Jung-Hwoan;Choi, Suk-Doo;Kim, Lee-Kyum;Park, Young-Wook;Jeong, Jong-Hee;An, Hee-Jung;Jung, Han-Min;Kim, Pyung
    • The Journal of the Korea Contents Association
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    • v.11 no.8
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    • pp.247-259
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    • 2011
  • It is necessary to collect, manage and standardize defense and technology terminologies which are used by defense-related agencies in the field of national defense science and technology. The standardization of terminology dictionary can eliminate confusion about terminology and increase accessibility for the terminology by offline and online services. This study focuses on building national defense science and technology terminologies, publishing dictionary including them, and improving information analysis in defense area. as well as take advantage of offline and online services for easy accessibility for the terminology. Based on the results of this study, the terminology data will be used as follows; 1) Defence science and technology terminology databases and its publication. 2) Information analysis in military fields. 3) Multilingual information analysis translated terms in the thesauri. 4) Verification on the consistency of information processing. 5) Language resources for terminology extraction.

The Application of Standard in According to Ground and Electrical Continuity Testing of Lightning Protection Equipment in Field (피뢰설비현장의 접지 및 전기적 연속성 시험에 따른 표준적용)

  • Song, Gil-Mok;Koo, Kyung-Wan
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.4
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    • pp.583-588
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    • 2014
  • In this study, there are examined to the grounding of lightning protection system and electrical continuity tests in the field. The standard for lightning protection system is different design or construction according to the characteristics of the structure. Ground is measured and compared at least four locations. According to the measured results in the field, the sampled values of the ground resistance are measured $5{\Omega}$ or less and the difference between each value is suitable as $0.2{\Omega}$ or less. The values of the electrical continuity test between ground and metal bodies are measured 3 groups such as isolated portion, the mechanical contacted portion, and the electrical continuity portion measuring $0.2{\Omega}$ or less. It is measured to be less than $0.2{\Omega}$ at all in metal bodies of underground. A metal body installed inside the structure is not isolated, but the resistance values are higher than $0.2{\Omega}$. Therefore, It must be carried out the structure having lightning protection system confirm the LPL(lightning protection level) and design the strategy.

Properties of Large and Small Starch Granules of Potato (감자전분의 입자별 성질)

  • Kang, Kil-Jin;Kim, Kwan;Kim, Sung-Kon;Park, Yang-Kyun;Han, Jae-Gyoung
    • Korean Journal of Food Science and Technology
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    • v.21 no.4
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    • pp.528-535
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    • 1989
  • Starches isolated from Seipoong and Daeji potato were classified into small and large granules. The starch granule size for Seipoong and Daeji was in the range of $10-85\;{\mu}m$ and $13-90\;{\mu}m$, respectively. Seipoong starch contained more large granules $(>41\;{\mu}m)$ while Daeji starch had more small granules $(<30\;{\mu}m)$. There was no difference in water-binding capacity both between two starches and among granule sizes. Amylose content for toro starches was the same but was higher in large starch granules than small ones. Swelling powder at $80^{\circ}C$ for parent starches was essentially the same but small starch granules had much higher swelling powder than large ones. The large starch granules for Daeji showed higher peak viscosity by amylograph than small starch granules. No such difference was observed for Seipoong starch. The gelatinization temperature range of small starch granules was wider than that of large ones, but gelatinization enthalpy was the same between large and small starch granules. The starches regardless granule sizes were completely gelatinized at $70^{\circ}C$.

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The Analysis of Short Current on Actual System through Power Analysis of AT Feeder System for Electric Railway (전기철도 AT급전계통 전력해석을 통한 실계통의 단락전류 분석)

  • Jung, No-Geon;Jung, Ho-Sung;Koo, Kyung-Wan;Kim, Jae-Moon
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.11
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    • pp.1582-1587
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    • 2014
  • In this paper, we perform a modeling for the AT Feeder system in AC electric railway and we utilize the power EMTDC program to implement about AT feeder system modeling. In addition, we study the impedance characteristics of the AT feeder system and calculated fault current and impedance according to the distance due to fault accident. Based on it's result, fault current are compared between calculating the value and simulation value in EMTDC modeling. Impedance of power system is Largest at the middle point of the system and is smallest near autotransformer, and then showed that the fault current is inversely proportional to impedance characteristics.

A Study on Heat Exchange Efficiency of EGR Cooler for Diesel Engine to Meet Euro-5 Emission Regulation (Euro-5 대응 디젤엔진용 EGR 쿨러의 열교환 효율 연구)

  • Lee, Joon;Han, Chang-Suk
    • Transactions of the Korean Society of Automotive Engineers
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    • v.15 no.3
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    • pp.183-188
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    • 2007
  • Recently, diesel engine has been frequently applied to RV, SUV and light duty truck due to the good fuel economy and high thermal efficiency. $NO_x$ and PM, environmental pollution materials are basically produced in diesel combustion process. The most important target in diesel engine research is the development of system to reduce the emissions of $NO_x$ and PM. Cooled EGR system is an effective method for the reduction of $NO_x$ emission and PM emission from a diesel engine and EGR cooler is the key component of the system. This study investigates the EGR cooler of oval gas tubes compared with the EGR cooler of shell & tubes to verify the heat exchange efficiency of cooler by means of engine dynamometer tests, rig performance tests and numerical analyses.

The Study on Reconnaissance Surveying Using Terrestrial Laser Scanner (지상 라이다를 활용한 현황측량 연구)

  • Lee, In-Su;Kang, Sang-Gu
    • Journal of Korean Society for Geospatial Information Science
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    • v.14 no.3 s.37
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    • pp.79-86
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    • 2006
  • Nowadays 3D terrestrial laser scanners record high precision three-dimensional coordinates of numerous points on an object surface in a short period of time. So terrestrial laser scanner is applied to a wide variety of fields including geodesy, and civil engineering, archaeology and architecture, and emergency service and defence, etc. This study deals with the potential application of terrestrial laser scanner in the reconnaissance surveying. The results shows that terrestrial laser scanner is possible to extract the linear features and the positioning accuracy of objects measured by total station surveying is comparative to that by terrestrial laser scanner. Thereafter, it is expected that the potential applications of terrestrial laser scanning will be more increased by combining terrestrial laser scanners with airborne LiDAR (Light Detection And Ranging) and photogrammetric technology.

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