• Journal of Biosystems Engineering
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• 제29권1호
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• pp.1-8
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• 2004

In order to solve the shortage of roughage supply for dairy farm in Korea, winter cereal forage production after harvesting of rice in the fallow paddy field was studied. Two parts are already reported at the previous paper - One was the model development of the mechanized production, and the other was the study of feasibility of the model and its desirable direction in Korea. In this study, the model system is applied for a winter cereal wrap silage production model to practice in Kyungbook National University farm on 3ha scale for 3 years. Results of the research are summarized as follows; It takes 2 or 3 working days to process the wrap silage in middle of May in Daegu region. Also, not much particular problem can be found during the application test of mechanized wrap silage production. Field capacity and field efficiency are estimated to be 0.6-0.85㏊/h and 50-70% in mowing, 1.1∼1.7㏊/h and 52∼80% in tedding and raking, 0.6∼1.1㏊/h and 25∼45％ in baling and 0.5∼0.57㏊/h and 75∼85% in wraping, respectively. Total production cost is estimated to be 1,257won/kg-TDN in oversowing and wrap-silage harvest in 1.6㏊ working area. As a result, large scale field is recommended to produce the wrap silage in order to maximize the field capacity.

• 한국실내디자인학회논문집
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• 제18권6호
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• pp.184-193
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• 2009

In recent years, the architectural interest in the apartment design has been getting focused on qualitative improvement and design differentiation. Especially the facade design differentiation is one of the most important elements in this matter. The purpose of this study is to provide the basic informations that can be referenced when architects are dealing with exterior design by analyzed design types and characteristics of apartment entrances. Target apartment of this study was whasung dongtan the 2nd phase new city districts which was planned to solve a housing shortage in the capital region. Having examined eleven pilot districts, four 1st construction areas, and eight 2nd construction areas, - total 23 complexes - 282 apartment entrances in 212 apartment buildings were carefully researched. Apartment entrance design can be divided into 15 different design elements: design types and combination types, direction, shape, height, approach types, exterior wall finishes of entrance, exterior wall finishes of lower parts of apartment, handrail types of slope, floor finishes of slope, distribution ratio of piloti, ceiling height of piloti, floor finishes of piloti, space use of piloti, window establishment between piloti and elevator hall, landscape elements of piloti. Design characteristics of building entrances were also analyzed in 4 groups (I, II, III, IV) divided by construction contractors ranking. In conclusion, first, design types and combination types can be classified into 15 different kinds, and the group I and II tend to show wider variety of entrance combinations. Secondly, the height and volume of extrude entrance type tend to increase in the group I and II. Third, the spatial configuration of pilotis appears to show more of 'pass + store + break' rather than 'access', as we get closer to the group I.

• 적정기술학회지
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• 제6권2호
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• pp.226-237
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• 2020

As the number of reported COVID-19 cases rises around the world, regions affected by the virus are taking serious measures to contain its spread. Face shields are one of the highest-need personal protective equipment (PPE) during COVID-19 pandemic. Beyond traditional face masks, as known cases of the coronavirus soar, currently there is a significant shortage of face shields around the world. In response, the protective face shields were designed and fabricated with open-source 3D modelling software and 3D printing technology, respectively. Our face shield consisted of two parts only; a reusable 3D printed headband and a visor made of transparent plastic sheet, as barrier. The resulting 3D printed face shields are affordable, lightweight, one-size-fits-most and ready-to-wear with minimal assemblies, and go on easily over glass, goggle and face mask. To ensure being donated to the healthcare professionals without risk infected by any pathogens, the 3D printed face shields were successfully be disinfected with ultraviolet germicidal irradiation (UVGI dosage of 1000 mJ/cm²) and 70% alcohol. For routine disinfection a UVGI chamber was designed and optimized to provide uniform UV-C illumination with an appreciated fluence for complete decontamination. More than 1,000 face shields were produced already and donated to the special hospitals for COVID-19 patients, quarantines, government and medical agencies in Ethiopia as well as in East-African countries. With certainty, our intention goes beyond the hospitals and other first responders, but not limited for all those who have to stay in the service or be in contact with many other people in the time of COVID-19 pandemic.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 봄 학술논문 발표대회
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• pp.14-15
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• 2020

The need for off-site construction has increased in the construction industry in Korea in recent years due to the enforcement of the 52-hour workweek, the increasing age of workers on construction sites, the deepening dependence on overseas workers, and the stagnation of productivity in the construction industry. Thus, studies on OSC started in April 2020. In addition, as a national policy study advocating the modular construction method, which is one of the OSC methods, was completed in the first half of 2019. 70 housing units in two complexes that satisfied the Housing Act requirements have been supplied to citizens. However, although modular construction methods have been recognized as a dramatic construction method that achieves shortened construction schedules and solves the issues of cost reduction and the shortage of technical workers on sites by combining the advantages of the manufacturing industry and applying the economies of scale, realistically it has issues due to the rising cost of steel and a low pre-fabrication ratio. Moreover, the construction time of core parts, such as those built by pouring concrete, has become a factor that hinders the shortening of construction times. Thus, this study aims to propose a precast concrete(PC) modular construction system, which fuses three-dimensional infill as an interior finish material and a three-surface PC module that can acts as a structure for a construction method that is economical and can shorten construction time.

• 한국산학기술학회논문지
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• 제21권10호
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• pp.48-54
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• 2020

과학기술의 급속한 발전 속도와 군용부품시장의 축소 등이 원인이 되어 부품단종이 증가하고 있다. 부품단종은 무기체계 총수명주기비용이 증가시키며 군 전투력 등에 큰 문제를 일으킬 수 있다. 따라서 부품단종으로 발생하는 대응비용을 절감하기 위해서는 사전 관리가 중요하며 사전관리 근간을 마련하기 위해 단종관련 정보를 관련자들이 공유할 수 있는 데이터베이스 구축이 되어야 한다. 효율적으로 데이터베이스를 관리하기 위해서는 주요 관리 항목을 선정하여 지속적으로 업무를 수행하는 것이 필요하다. 본 연구의 목적은 부품단종 관리 시스템에서 주요한 관리 항목을 도출하는 데 있다. 방위사업청 매뉴얼과 SD-22 등을 바탕으로 관리 항목을 선정하여 주요 관리항목을 AHP(Analytic Hierarchy Process) 기법을 통해서 분석하였다. 부품단종에 따른 영향성, 부품단종 확률, 부품단종 대응비용의 3가지 기준에 의해 관련된 세부 항목 15개로 계층화하였으며 9점 척도로 설문한 항목에 대해 각각의 가중치를 산출하였다. AHP 설문조사는 부품 관리 전문가 25명을 대상으로 실시하였고, AHP 설문결과 일관성비율이 0.1 초과인 것을 제외하였다. 그 결과 부품단종관리를 위한 유용한 항목을 도출할 수 있었으며 이에 대한 결과 해석 및 향후 발전방향을 제시하였다.

• Korean Chemical Engineering Research
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• 제44권2호
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• pp.136-148
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• 2006

주물공장에서는 주철을 녹여서 다양한 기계부품을 만든다. 다양한 기계부품을 만들기 위해 목형을 주물사에 넣은 후 주입구를 만들어 녹인 주철을 투입한다. 주물공장은 furan 공정을 포함해 많은 공정으로 이루어지며, 이 중 furan 공정은 목형에 주물사를 부어 넣는 공정이다. Furan 공정의 첫 단계는 주물사가 서로 엉겨 붙어 있게 하기 위해 접착성을 가지는 고분자 물질인 furan류를 주물사에 섞게 되고 녹은 주철이 목형으로 들어가는 것이며 고온에 의해 많은 유해 VOC류가 발생하게 된다. 또 공정조업에서 furan용 모래를 목형이 든 주물형틀에 부어 넣게 되고, 이때도 유독가스와 분진이 발생하게 되며 이 분진은 furan 물질을 포함하고 있어 조업자의 건강에 치명적인 요소가 되며, 이로 인해 조업기피현상이 심화되어 인력수급에 문제가 되고 나아가 사업 경영에 큰 걸림돌이 되고 있다. 본 연구는 이러한 조업기피의 원인을 제거하고 쾌적한 조업환경을 제공하기 위해 유해 VOC류와 집진을 동시에 수행할 수 있는 유해 VOC 및 분진 동시제거 시스템을 최적 설계하고 나아가 현장에 적용 설치하였다. 그 결과 설치 후 포름알데히드의 경우 VOC 0 ppm, 분진 $4{\mu}g/m^3$으로 조업환경이 개선되었으며, 조업자들의 조업 기피 요인을 해소하였다. 또한, 우리는 회사의 고용 문제를 해결하고, 작업의 생산성을 향상시킬 수 있었다.

• 대한원격탐사학회지
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• 제28권5호
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• pp.587-596
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• 2012

교토메커니즘의 체제하에서 신규조림 및 재조림(Afforestation and Reforestation Clean Development Mechanism, A/R CDM) 사업을 위해서는 대상지적격성 입증이 필요하다. 대상지 적격성 입증을 위해서는 과거에서 현재까지 산림이 아닌 지역으로 규정되어 있으므로 현재 대상지역이 산림 정의에 부합되지 않음을 입증하여야 된다. 본 연구에서는 위성영상을 이용하여 A/R CDM 대상지를 선정을 위한 분류기법을 제시하고자 한다. 연구대상지는 양평군 양평읍의 일부 지역을 선정하였고, 산림정의에 부합하는 3가지 요소 즉, 수고, 울폐도, 면적을 고려하여 LiDAR 자료와 항공사진을 이용하였다. Moving window를 적용하여 수고, 토지면적, 울폐도를 동시에 고려하여 화소기반 산림/비산림 지역으로 분류하였다. 그 결과, 조림 가능지역은 124.06 ha이고 조림 불가지역은 약 357.02 ha이다. 분석에서 적용된 기법은 A/R CDM 사업 대상지 선정 뿐만아니라 기타 교토메커니즘의 활용에 기초방법론을 제공하였다.

• 한국제4기학회지
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• 제1권1호
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• pp.3-20
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• 1987

韓半島에 분포하는 第四紀 地層들에 대한 기존의 지질학적 연구는 극히 미소한 편이였으며 계곡이나 평야등지에 분포하는 沖積層들이 第四紀 동안의 유일한 地層으로 대표되어 왔다. 따라서 韓半島의 第四紀 地質時代는 그 대부분이 堆積보다는 浸蝕이 우세하였던 시대로 認識되었으며 기존의 지질도들에 의하면 沖積層의 형성시기를 제외한 第四紀는 不整合으로 표시되었다. 이는 韓半島의 지질과 지형이 第四紀 地層이 형성되어 현재까지 殘存해 있을 수 있는 커다란 堆積盆地를 이루지 못한데 있다. 이와 반면에 現 地形의 산록이나 해안주변등에서는 서로 堆積 환경과 時代를 달리하는 第四紀 地層들이 소규모적이나 수직적으로는 良好한 분포를 보이는 지역들을 발견할 수 있다. 그 대표적인 예로서 동해안의 3개지역(북평, 울진, 포항)과 서해안의 고창지역에서는 砂礫이나 砂質粘土등으로 구성되어 있는 第四紀 地層들이 발달하여 있다. 本 地層들의 분포위치, 堆積相 및 古地磁氣 연구로서 地質時代를 규명하였으며 堆積構造와 粘土광물 분석등을 통하여 이들의 古環境을 해석하여 第四紀 동안 韓半島의 地質史를 규명하였다.

• 한국패션뷰티학회지
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• 제6권1호
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• pp.28-38
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• 2008

Balhae was an ancient Korean kingdom that existed almost 1,300 years ago. It was a dynamic time in the Korean history when the national strength was building up in terms of politics, economy and culture, thereby called as "Haedongseongguk, the powerhouse in the East". Balhae had dominated parts of Manchuria and the northern part of the Korean peninsula between the late 7th century and the 10th century, occupying the center stage of the northern Korean history. It serves as a window to the East Asia in the present as well as in the past. Yet, due to its geography spanning from the North Korea to Kilin Province of China to part of Heilongjiang Province and to the Littoral Province of Siberia, Balhae has been the center of historical disputes among neighboring countries that insist it is part of each of their own history. China argues that it was a prefecture of the Tang Dynasty, established by the Mohe, not a successor to Goguryeo, which is a China-oriented viewpoint of history. In addition, Russia recognizes Balhae as their first-ever medieval feudal state since the Littoral Province is now under their sovereignty. Therefore, the restoration of Balhae history is in line with the veritable establishment of the ancient Korean history. For this, it is necessary to embrace inter-disciplinary achievements and to continue efforts to adopt them rather than to blame the shortage of historical documents and the difficulty of the excavation of relics. If fashion is "a visual symbol" of our society, beauty culture serve as a mirror to reflect our civilization and culture directly or indirectly. Still, it is not easy to draw similarities by analyzing and comparing the attributes of various cultures and civilizations party because the essence of culture lies in diversity. Nevertheless, it is believed that cultural liaison as well as geographical liaison can be a medium to compensate for the limits of the foreign exchange history of Southeast Asia in proving the relationship between Goguryeo and Balhae, by examining and speculating beauty culture that reflect their period. It was confirmed by various documents regarding Goguryeo out of relics, historical sites and documents. Mural paintings showed how the people of Balhae wore and accessorized themselves. They also allowed us to speculate their way of living. As the contemporary historians can assert that Balhae is part of the Korean history thanks to the realism scholars in the late Joseon Dynasty, who rediscovered the Balhae history and conducted practical researches, it is expected that researchers who study beauty culture contribute to completing the restoration of the Balhae history by thoroughly examining our history, costume and beauty culture.

• 모자간호학회지
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• 제4권1호
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• pp.3-11
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• 1994

Presently there is an increasing demand for home health care services due to changes in the demographic structure as a result of an increasing elderly population, socio-economic improvements, and changes in the family structure, as well as the growing number of people with degenerative diseases. In addition to these reasons, rising medical costs and there a shortage of patient beds space in the hospital, particularly since introduction of national medical insurance. There has been an increasing demand for health care health care services. This study was done to identify the basic data for home health care management. It focused on developing client selection criteria, assessment tools, and recording methods. This was accomplished by the researchers visiting the patients in their homes. The research process included preparation investigation, tool development, training of the project researcher, and visiting the clients in their homes. The research tools are as follows : 1. Record development : a) The selection criteria tool for home health care of postpartum women was a structured tool and consisted of four parts. b) The structured assessment tool consisted of a general items, obstetric history, past medical history, methods of feeding, medications taken before admission, laboratory test results, discharge instructions, discharge medications, family tree, economic status, environmental status, a map, health assessment of postpartum women and their newborns. c) The visit note I consisted of the frequency of visits. Visit note II consisted of the date ; nursing problems ; nursing process including the initial assessment ; nursing goal ; visit plan ; postpartum women and their neonate health status, diagnosis, goal, implementation, evaluation, summary, next plan, for visit revision. d) Problem note consisted of the date, problem numbers, nursing diagnosis, problem appearance date problem resolution date. The research results are as follows : 1. Nursing problems : The nursing problems of the postpartum women and their neonates were evaluated by the number of nursing diagnoses and the change in the pattern of nursing diagnosis related to the number of visits. a) Nursing diagnosis The nursing diagnosis was classified according to physical function, psychosocial function, family system maintained function. b) The changes of nursing diagnosis related to the number of visits. As the type of nursing diagnosis changed related to the number of visits the number of nursing diagnoses decreased. 2. Contents of home health care : The content was categorized according to assessment, direct care, counseling, education, family care, reporting to with the attending doctor. The recommendations based on the research results are as follows : 1. Tool development Replication of this study is needed to test the validity of the assessment tools used. 2. Home visit a) Home health care nurses should be licensed and qualified. A referral form from the attending doctor is needed for legal protection of nurses. b) The first home visit need to be within 24 hours of discharge from the hospital to decrease the anxiety of frightened postpartum women. c) When the changes occur in the newborn's status, home health care nurses should consult a pediatrician. Communication within the home healthcare team is essential and needs to consistent and done smoothly. 3. Home health care A Study is required to develop protocols for education of staff and for operation of all aspects of this program.