• 한국식생활문화학회지
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• 제28권5호
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• pp.425-437
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• 2013

The aim of this study was to establish the identity of Korean traditional food based on the recorded food preferences during the period of the Chosun Dynasty. Our primary source in this regard was the invaluable, historical document called the "Miam's diary." This important document reveals details of such food preferences from October 1567 to September 1568. By analyzing the income-expenditure trends of virtually every household, this diary was used to describe a vivid traditional food preference of the people during that period. A detailed analysis of the diary reveals the summary of families' characteristics in the 16th century. First, it records the fact that expenditure on food was mainly based on stipend and gifts received. The type of food preferred by the people was diverse in nature; for it included rice, bean, chicken, pheasant, and seafood. However, there were dried or pickled forms too so as to prevent them from undergoing decay. Second, it throws light on the fact that people expended food mainly as a salary for servants. People utilized the income from selling such food items to purchase goods and land. They also used the same either to donate for a funeral or wedding purpose. Third, it records the fact that day-to-day purchase of groceries was mostly based on gift(s) for someone close to them such as a neighbor, colleague, relative, or student. Further, such gifts included small groceries, food items, and clothes. Fourth, based on the data available in the diary, it seemed likely that the gentry families laid emphasis on the customary formalities of a family dating back to as early as the late 16th century. Finally, the document also records the fact that noblemen of the Chosun Dynasty had a notion that they had to extend warmth and affection by presenting generous gifts to their guests at home. Noblemen during that period were very particular in welcoming their guests as they believed that this approach alone would testify their status as noblemen.

• KIEAE Journal
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• 제12권5호
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• pp.85-92
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• 2012

This research was executed to analyze the problems of Korean type of 'Light-weight' Greening that has been applied similarly by the type of 'Intensive Greening,' and to suggest the better way. To achieve this purpose, we compared and analyzed the theory about the definition of Korean type of Roof Greening and the type of Greening of FLL. And we researched documents and fields of 18 sites of Seoul City that applied the type of 'Light-weigh' Greening, and produced improvement issues and directions. To resolve the confusion of the type definition and site application, arising from considering 'weight of greening' as the main viewpoint to classify the type of Greening, we have to change the term 'Light-weight' with more suitable for contents-based definitions. According to a 'Light-weight' Greening field survey, only 5 among 18 sites are suitable for Extensive Greening and the rest sites show the character of Intensive Greening. Korean concept of 'Light-weight' Greening corresponds with the definition of 'Weight of Greening', but has a problem that does not correspond with the viewpoint of 'Maintenance of Greening'. This problem comes from the fact that the surveyed Light-weight(extensive) Greening sites are designed and executed for use. Therefore, Extensive Greening is proper to be applied for sites, excluded from use. 5 sites, determined suitable for Extensive Greening, adopts 'Sedum-herbaceous Planting' or 'Sedum-grasses Planting' forms of Greening, based on Sedum. So, it has to precede with selecting and breeding plants for developing various forms of Greening, suitable for Extensive Greening including 'Grasses-herbaceous Planting.'

• 한국산림과학회지
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• 제24권1호
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• pp.53-61
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• 1974

전남(全南) 신안군(新安郡) 흑산면(黑山面) 홍도리(紅島里)에 위치(位置)하고 있는 홍도(紅島)의 적송집단(赤松集團)을 대상(對象)으르 개체(個體)의 수형(樹型), 분지각(分枝角), 수피색(樹皮色), 추재율(秋材率) 침엽장(針葉長), 수지도(樹脂道)의 위치(位置)와 수(數) 등이 조사(調査)되었다. 홍도(紅島)에 자라는 송류(松類)는 적송(赤松)이 대부분(大部分)으로 필자(筆者)는 조사(調査)도중 단일주(單一株)의 해송치수(海松稚樹)를 발견(發見)하였을 뿐이다. 20년생(年生) 이상의 적송(赤松) 14개체(個體)의 침엽(針葉)을 검경(檢鏡)한바 어느 정도(程度)의 해송인자(海松因子)가 혼입(混入)되어 있었다. 밀엽형개체(密葉型個體)와 소엽형개체(疎葉型個體)를 볼 때 부수지도(副樹脂道)의 수(數)가 현저하게 적은 것이 특징(特徵)이며 특히 소엽형(疎葉型)의 경우 부수지도(副樹脂道)의 수(數)가 1.3 이라는 평균치(平均値)를 보였다. 현 단계로서는 과거부터 홍도(紅島)에 해송(海松)이 있었던 것으로 보기 어렵고 해안일대(海岸一帶)에 분포(分布)하는 해송(海松)으로부터 화분(花粉) 비산공여(飛散供與)되는 것으로 생각된다.

• 디지털융복합연구
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• 제6권3호
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• pp.53-63
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• 2008

This paper examined the relationship between job stressor and job satisfaction according to the general property of disabled workers. Role ambiguity, role conflict, and role overload were cast as the factors of job satisfaction to explore their relationship with the general property and type of disabled workers. The results revealed that role ambiguity had the strongest meaningful relationships with job satisfaction and role conflict, role overload had not shown the meaningful relationships with their Job satisfaction. The reason of this results seemed to be from the fact that the work type available or not available to disabled worker was determined beforehand according to their disability type. Finally, these findings provide a guidelines of efficiency human resource management and strategic development program for the disabled workers.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1991년도 하계학술대회 논문집
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• pp.587-590
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• 1991

It is general to make the circuit analysis of current-fed type inverter driven by current source with rippleless input under the assumption of infinite induction Ld in direct current reactor(DCL). This paper focusing on the fact that Ld has bounded value in real circuit, examines operating characteristics by analysis of static state characteristics of current type inverter driven by voltage source and compares it with the operating characteristics of the circuit driven by current source.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2012년도 추계학술대회 논문집
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• pp.193-194
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• 2012

The bidirectional boost-buck chopper type AC voltage regulator is presented in this paper. The main characteristic of the AC chopper is the fact that it generates an output AC voltage larger or lower than the input AC one, depending of the instantaneous duty-cycle. Boost-buck chopper type AC voltage regulator, derived from the DC chopper modulated method, is a kind of direct AC-AC voltage converter and has many advantages: such as fast response speed, low harmonics and high power factor. It adopts high switching frequency AC chopper technique and can do wide range step less AC voltage regulation.

• 한국음향학회지
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• 제11권1호
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• pp.67-79
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• 1992

적응방식이나 실시간 처리에 적합한 온라인 ARMA 계수추정을 위하여 공분산형 ARMA 고속 transversal 필터 알고리즘을 제안하였다. 제안된 알고리즘은 ARMA 모델의 경우 상관함수 행렬의 이동불변 특성이 각 블록 별로 만족함을 이용하여 ELS(Extended Least Squares)를 공분산형의 경우에 대해 고속 시갱신 알고리즘으로 구현한 것으로서, 알고리즘의 유도에는 사영연산자를 이용한 기하학적 접근방식을 사용하였다. 제안된 알고리즘은 13N+37 MADPR의 연산량을 필요로 하며, AR부분과 MA부분의 차수를 달리할 수 있다.

• 한국문헌정보학회지
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• 제14권
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• pp.131-148
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• 1987

The Yi-Dynasty published the calendars printed by means of woodblock and typeprinting for the purpose of informing its people of four seasonal changes and appropriate time for farming. The printing types were used to publish the calendars in those days varied depending upon the kinds of the calendars, but all those types are known as only one name: Kwansanggam Type. This is because there have been little studies on the different kinds of printing types. As a result, there are many cases where the libraries make erroneous notes in their catalogues. This study points up the fact that four different kinds of Kwansanggam Type were used depending upon the nature of the calendars. For classification purpose, I call these types Daetongryokja, Naeyongsamsoja, Myongsiryokja, and Chiljongryokja. What has not been revealed in this study can be further explained as the more calendars of those days are found out.

• 세라미스트
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• 제20권4호
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• pp.55-73
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• 2017

As one of the most versatile semiconductors, zinc oxide (ZnO) with one-dimensional (1-D) nanostructures has been significantly developed for the application of ultraviolet (UV) lasers, photochemical sensors, photocatalysts, and so on. Such 1-D nanowires could be easily achieved due to the anisotropic growth rate along the [0001] direction. However, such typical growth habit leads to decrease the surface area of the (0001) plane, which plays a central role in not only UV lasing action but also photocatalytic reaction. This fact lead us to develop ZnO crystal with enhanced polar surface area through crystal growth control. The purpose of this review is to provide readers a simple route to plate-type ZnO crystal with highly enhanced polar surfaces and their applications for UV-laser, photocatalyst, and antibacterial agents. In addition, we will highlight the recent study on pilot-scale synthesis of plate-type ZnO crystal for industrial applications.

• Journal of Magnetics
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• 제7권1호
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• pp.9-13
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• 2002

The dependences of microscopic magnetic domain on film thickness in unidirectional and isotropic exchange-coupled NiO/NiFe bilayers were investigated by magnetic force microscopy to better understand for exchange biasing. As NiO thickness increases, microscopic domain structure of unidirectional biased film changed to smaller and more complicated domains. However, for isotropic-coupled film a new cross type domain appeared with out-of plane magnetization orientation. The density of the cross domain is proportional to exchange biasing fields and the fact that the domain was originated by the strongest exchange coupling region was confirmed from the dynamic domain configuration during a magnetization cycle.