• Journal of the Korean Wood Science and Technology
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• 제10권3호
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• pp.196-196
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• 1982

There is a heavy stocked wood volume in the forest of Kang-Won Province compared with the other forests of Korean Provinces. It mainly, however, consists of non-productive and inferior hardwoods and shrubs which grows naturally. -This naturally grown hardwood forest should be cut and reforested with more economical confierous and diciduous tree species by artificial and natural regeneration under the positive government support. This study was carried out to survey the reasonable and economical utilization measures on harvesting wood products when existing hardwood forest should be cut primarily. This is the rust report on the resources and the classification of tree species by the uses of wood growing in the hardwood forest of Kang-Won Province. According to the investigation, 321 hardwood species are growing in this forest, and 141 species of them are extremely not suitable for wood production. The usable species as fuel wood was 180, and these are able to classify into the 22 groups by the uses of wood.

• 한국산학기술학회논문지
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• 제17권2호
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• pp.45-57
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• 2016

본 연구에서는 중장년층을 대상으로 노후준비가 현재의 삶의 만족도에 미치는 영향요인을 파악하고자 하였다. 이를 위해 서울과 경기주변의 수도권에 거주하는 중장년층을 대상으로 설문조사를 실시하였고, 총 450부의 설문지를 회수하여 결측치가 많은 8부를 제외한 442부가 분석에 활용되었다. 연구의 결과를 요약하면 다음과 같다. 첫째, 정서적 만족도에 영향을 미치는 변수는 정서적 노후준비, 경제적 노후준비가 정서적 만족도에 긍정적인 영향을 미쳤다. 둘째, 신체적 만족도에 영향을 미치는 변수는 학력, 기술/노무직, 정서적 노후준비, 신체적 노후준비가 신체적 만족도에 긍정적인 영향을 미쳤다. 셋째, 경제적 만족도에 영향을 미치는 변수는 가계소득, 정서적 노후준비, 경제적 노후준비가 경제적 만족도에 긍정적인 영향을 미쳤다. 넷째, 사회관계 만족도에 영향을 미치는 변수는 성별, 정서적 노후준비가 사회관계 만족도에 긍정적인 영향을 미쳤다. 이러한 결과는 노년기 삶의 만족도는 노년기의 수준에서 향상되기는 매우 어렵기 때문에 중장년층 시절부터 노후준비가 잘되어 있어야 함을 시사해 주는 것이라 할 수 있다.

• Journal of Nutrition and Health
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• 제3권1호
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• pp.1-43
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• 1970

There is no any reports on nation-wide nutrition survey since 1947 in Korea, During the period only the small scaled nutrition surveys have been reported by several investigators. Authors, under the financial support from the Ministry of Health and Social Affairs, Republic of Korea, had conducted a nation-wide nutrition survey, including dietary, clinical, and socio-economical aspects, during the period from 29th of July to 15th of August, 1969. Number of households surveyed and population distribution are shown in Table II-2 and age and sex distribution of the population surveyed are also in Table II-3 in this report. Average food and nutrient intakes are shown in Tables II-6, II-7 and II-8 respectively. For the detailed discussions on food and nutrient intakes, see the Tables II-9 through II-11 and Figures II-1 through II-10 in this report. Anthropometric data are shown in Tables III-1 through III-4 and in Figures III-1 through III-4. Data of deficiency diseases are shown in Table III-5 and in Figure III-5 in this report. Socio-economical data are shown in Tables IV-1 through IV-26 and in Figures IV-1 through IV-3 in this report.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2004년도 춘계학술발표회논문집
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• pp.251-257
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• 2004

The Electro-Optical Camera(EOC) image of the first Korea Multi-Purpose Satellitel(KOMPSAT-1) has both high resolution and convenient acquisition of research data, but on the other hand it has a defect of one band image. Fortunately, the multispectral Moderate Resolution Imaging Spectroradiometer (MODIS) image data are receiving every day at the Korea Aerospace Research Institute (KARI). Therefore, this paper performed an effective merging for survey of reclaimed land using the high-resolution (6.6m) KOMPSAT-1 EOC image and the multispectral MODIS image data. According this paper prepared map of reclaimed lands in Western Coast of North Korea as quantitative(position and form) survey of reclaimed lands of North Korea using merged image. The use of KOPSAT-1 EOC image and MODIS images was found to be economical such using of large scale areas as reclaimed land or according easy to collect information and such north korea as inaccessible areas like as receiving every day.

• Journal of the Korean Statistical Society
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• 제8권1호
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• pp.3-14
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• 1979

When we estimate the population proportion of the individuals in the population for the attribute or the characteristic, we consider the sample survey. We can consider many methods of the sample survey, as mail questionnaire, visits, personal calls, etc. When we have the list of units in the population, we usually make use of the mail questionnaire. It is economical and free from the investigator's effect on the respondent, but it has some objections. The principal objection is that it involves a large nonresponse rate that might cause a singificant bias in the result. The bias arises from the different in the characteristics under investigation between those who respond and those who do not respond.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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• pp.697-703
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• 2008

Excessive water leakage phenomenon happens through damage of nation core zone of about 17,000 storage of water facilities or collapse of dam is worried, is being damaged or enforce dilapidated fill dam core zone's repair reinforcement. Example that use grouting method of construction considering construction and economic performance etc. recently by repair reinforcement way about defect of dam is increased. Permeation grouting method repair & reinforcement of fill dam countermeasure is preferred in nation. Do that is economical to decide these repair reinforcement effect and grouting effect estimation method that do not give damage to dam is effective. Therefore, observing electricity resistivity Survey change of dam since grouting reinforcement using Electric resistivity Survey inquiry of seismic survey method in this research, Wished to verify grouting effect whether is possible as Electric resistivity Survey, and study whether integrity of dam through repair reinforcement defined.

• Smart Structures and Systems
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• 제30권2호
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• pp.145-157
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• 2022

The design of safe and economical structures depends on the reliable live load from load survey. Live load surveys are traditionally conducted by randomly selecting rooms and weighing each item on-site, a method that has problems of low efficiency, high cost, and long cycle time. This paper proposes a deep learning-based method combined with Internet big data to perform live load surveys. The proposed survey method utilizes multi-source heterogeneous data, such as images, voice, and product identification, to obtain the live load without weighing each item through object detection, web crawler, and speech recognition. The indoor objects and face detection models are first developed based on fine-tuning the YOLOv3 algorithm to detect target objects and obtain the number of people in a room, respectively. Each detection model is evaluated using the independent testing set. Then web crawler frameworks with keyword and image retrieval are established to extract the weight information of detected objects from Internet big data. The live load in a room is derived by combining the weight and number of items and people. To verify the feasibility of the proposed survey method, a live load survey is carried out for a meeting room. The results show that, compared with the traditional method of sampling and weighing, the proposed method could perform efficient and convenient live load surveys and represents a new load research paradigm.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1994년도 가을 학술발표회 논문집
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• pp.111-118
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• 1994

The use of steel sheet pile walls as barrier walls have the temporary for coffer dam, retaining wall in excavation, etc., but also permanent of semi-permanent for harbor construction, containment systems, vertical barrier systems for waste disposal (landfill) or subway in excavarion. In all these applicaions the resistance of the structure to seepage plays an important role. Also the stability and longevity of the construction, the possibility of permanent control and survey make the steel sheet pile wall a nearly perfect vertical barrier from a technical and economical point of view.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1990년도 가을 학술발표회 논문집
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• pp.141-144
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• 1990

In recently, the interest of high strength and flowing concrete, to improve quality and workability of concrete, is gradually increased. In order to make high strength and flowing concrete, many processes may be considered, the water reducing technique using superplasticizer seems to be the most practical, but domestic superplsticizers are not widely used because of economical efficiency, low quality and lack of understanding in construction field. The purpose of this report is to analyze the consumption structure and behavior of domastic acmixtures containing superplasticizer, and to examine about, dessemination of superplasticizer.

• 한국식품영양학회지
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• 제7권3호
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• pp.239-249
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• 1994

This study was conducted to find out the actual condition of dining-out and the propensity to dining-out according to age groups and sex distinction in Pusan area. The survey was conducted on 464 peoples who live or work, including students aged more than 4th grade in elementary school In Pusan area. The results of the questionnaires are as follows. The survey on dining-out time indicated that most of peoples like to dine out at supper time more than at luncheon. The motivations of dining out were in order of the time going out with family, having party and meeting with friends. Restaurants used frequently at luncheon time were in order of flour food shop, Chinese-style food shop and Korean-style food shop, and at supper time were in order of Korean-style food shop, roasts rib shop and Chinese-style food shop. The survey on dining-out cost indicated that 71.88% of respondents were payed out less than 4,000 won Per one person at luncheon, but 54.67% of them were payed out more than 5,000 won at supper. The reasons of prefferring food shop used first were in order of delicious taste, sanitary circumstance and economical price, and of no prefferring food shop used first were untasty, unsanitary circumstance and expensiveness. But, the results of the propensity to dining-out were different according to sex distinction, age groups and jobs.