• 사회경제평론
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• 제29권1호
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• pp.31-70
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• 2016

본 연구는 포스트 케인지언 경제학의 전개과정과 대안 경제학으로서의 가능성을 살펴본다. 비주류 경제학 중에서도 비주류 경제학이라고 칭해지는 포스트 케인지언 경제학은 현재 대안적 거시경제학으로서의 가능성을 어느 정도 인정받으며 외국에서는 비교적 활발한 논의가 되고 있다. 한국에서도 그간 여러 선행 연구가 있었지만, 여전히 학파에 대한 일반적인 소개가 제대로 이루어지지 않고 있다. 본 연구의 일차적 과제는 포스트 케인지언 경제학의 전개과정을 통해 학파의 현황을 소개하는 것이다. 이를 통해 비주류경제학인 포스트 케인지언 경제학이 대안 경제학으로 자리매김할지를 라카토슈의 '과학적 연구프로그램 방법론(methodology of scientific research programmes)'을 이용해서 확인하는 것이 본 연구의 이차적 과제이다. 연구의 순서는 다음과 같다. 먼저 포스트 케인지언 경제학의 전개과정을 살펴보고 포스트 케인지언 경제학의 특징을 주류경제학과 비교해서 분석한다. 이를 통해 포스트 케인지언 경제학과 주류경제학의 경계를 긋는다. 다음으로 라카토슈의 연구프로그램 방법론을 이용하여 포스트 케인지언 경제학의 연구프로그램으로의 완결성을 가름해 본다. 마지막으로 포스트 케인지언 경제학의 한계 및 앞으로의 과제를 제시한다.

• 보존과학연구
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• 통권31호
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• pp.59-68
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• 2010

Cultural heritages are damaged by surrounding several environmental factors. Main factors are temperature, humidity, light, atmosphere and indoor pollutant, organism, etc. Therefore, to prevent damage of cultural heritage from such environmental factor, conservation environment monitoring becomes more important. Indicator is one of the simple method for environment monitoring. It can be used without expensive and complex equipments. However, it should be performed scientific examination for application to cultural heritage. In this study, some Temperature Indicators were chosen and reliability assessment was carried out for application to cultural heritage. Brightness($L^*$) is selected for reliability assessment factor. As a result of lab test, Temperature Indicators were not influenced greatly in humidity change. When they were exposed to setting temperature, the color was changed in setting temperature area and ${\pm}2^{\circ}C$ part of setting temperature. Especially brightness value was high in setting temperature area. Also, Temperature Indicators were stabilized after about 16 minutes when were exposed to temperature difference of $10^{\circ}C$ and when temperature difference with exposure environment is smaller, stabilization time shortened. Therefore, it is a possible to confirm that selected Temperature Indicator is reliable product through measurement of color difference value and naked eye observation.

• 한국수산과학회지
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• 제43권4호
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• pp.380-385
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• 2010

Several theoretical acoustic scattering models were applied to estimate the target strength (TS) for assessing the biomass of zooplankton, to overcome the difficulty of direct measurements. Acoustical scattering characteristics of copepods were estimated using three theoretical models, and the application of the models was evaluated for four frequencies of a scientific echo sounder. The scattering directivity by the body shapes of copepods at 200 kHz and 420 kHz was significantly affected by TS patterns. Averaged TS, however, were similar at higher frequencies. Consequently, a low frequency model, such as a truncated fluid sphere model, provides a good acoustical biomass estimation. The regressions of TS and 30 logL were < $TS_{200\;kHz}$ >= 30logL-118.4 ($R^2=0.716$) and < $TS_{420 kHz}$ > =30 logL-108.8 ($R^2=0.758$), respectively.

• 대한의용생체공학회:의공학회지
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• 제39권2호
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• pp.80-86
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• 2018

The aim of this study were to establish the clinical references and guidelines for the maximum standardized uptake ($SUV_{max}$) value of pancreatic cancer, pancreatitis, and normal pancreas in $^{18}F-FDG$ PET-CT examinations for pancreatic disease. For this purpose, we performed the statistical analysis on the descriptive statistics, percentiles and inter quartiles range (IQR), normal distribution, and using the probability density function for pancreatic cancer, pancreatitis, and normal pancreas. As a result, the clinical reference of $SUV_{max}$ for the pancreatic cancer, pancreatitis, and normal pancreas was more than 3.45, 1.91 to 2.62, and less than 1.91, respectively. Also, optimal cut-off value for applying the dual time point PET-CT examination was determined to be 2.62. The results of this study are summarized as follows: first, we suggests the clinical reference and guideline for the pancreatic cancer, pancreatitis, and normal pancreas, and second, suggests a scientific approach to improve diagnostic accuracy of pancreatic disease by deviating from an approximate experience approach.

• 한국환경보건학회지
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• 제44권4호
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• pp.348-359
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• 2018

Objectives: The purpose of this study was to investigate the relationship between frequency of alcohol drinking and blood mercury concentration in Korea. Methods: This was a cross-sectional study that used data from the Korean National Health and Nutrition Examination Survey. Among them, 3,174 persons were selected for the final study. Results: The concentration of mercury in the blood increased as the frequency of drinking soju or beer increased. Similarly, in the multiple-linear regression analysis model, the frequency of soju drinking was identified as an independent variable showing a statistically significant positive linearity (p<0.001). After controlling for confounding factors, comparing those drinking 'more than twice a week' with those who almost do not drink alcohol, the adjusted ORs for exposure to high concentrations of mercury were 3.24 (95% CI, 2.10-4.99) for drinking soju and 2.07 (95% CI, 1.33-3.22) for drinking beer. The interaction effect between 'soju drinking' and 'spicy pollack and seafood stew' was not statistically significant (p=0.098) for evaluating the interaction effect between the two variables. Conclusions: The concentration of mercury in the blood increased as the frequency of drinking of soju or beer increased. The higher the frequency of alcohol drinking, the more likely is the blood mercury to be included in the high-concentration group. The results of this study can be used as important scientific evidence for the field of environmental health related to alcohol drinking and blood heavy metal exposure in Korea.

• 아동학회지
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• 제34권4호
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• pp.19-36
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• 2013

This study examined concept development in children in terms of sound propagation. The subjects consisted of 240 five-, seven-, and ten-year-old children from three kindergartens and two primary schools respectively. The instrument used for the purposes of this study was the examination instrument on sound as developed by the SPACE Project in the UK. The concepts related to sound were classified into five stages including : no recognition, egocentric concept, initial mental models, synthetic mental models, and scientific mental models. The results revealed the existence of significant differences in terms of the types of concept that children were aware of, according to age and context. Most five-, seven-, and ten-year-old children revealed egocentric concepts related to every sounds, drum, rubber band context, however, most five-, seven-, and ten-year-old children revealed their recognition of the synthetic models of sound propagation when using the string telephone context. These results have implications for the contents of science education for children when it comes to the development of concepts related to sound propagation.

• 한국환경과학회지
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• 제15권9호
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• pp.907-912
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• 2006

The study is conducted to analyze the questioning styles in three middle school environmental textbooks in terms of frequency, type, and placement of questions. It is also to analyse and compare the kinds of scientific processes elicited by the questions in the topics of textbook. The instrument was the Textbook Questioning Strategies Assesment Instrument (TQSAI) which was developed the Cooperative Teacher Preparation Program, University of California. The mean number of questions per topic was 4.0 and the ratio of questions to sentences was 3.8%. The numbers of empirical and non-empirical questions were 52.5% and 47.5% for textbook D, 56.6% and 43.4% for textbook J, and 92.7% and 7.3% for textbook K, respectively. The open-hearted question was the highest in all types of questions for three middle school environmental textbooks. The explanatory question was the highest in all characteristics of questions. The types of various questions were distributed throughout textbooks including the green field, debate-discussion, examination, and so on.

• Architectural research
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• 제20권3호
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• pp.65-73
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• 2018

The restoration of foundations supporting the immense load of the stone pagoda at Mireuksa Temple Site prioritizes securing its structural stability. But so far, rammed earth construction is still not easy to determine the structural stability. This paper aims to emphasize that a scientific experimental study was conducted on a rammed earth construction, to identify its methodology and obtain objective data about structural stability of the foundation work. An experimental study fabricated specimens from the soil that had been removed during the excavation survey, determined the allowable bearing capacity through plate load tests, and compared the results with the predicted stress after reassembly of the stone pagoda to estimate the structural stability. Then, the repair method was selected based on the experimental study result. The evaluation method of the restoration of foundations consisted of an examination of the allowable bearing capacity and settlement. The allowable bearing of the reinforced foundation was more than twice the contact pressure under the stacked stones of the pagoda. The possibility of settlement of the rammed earth foundation soil layer during the pagoda assembly is expected to be very low because the settlement amount of the reformed soil layer is less than half of the settlement of the stabilized existing soil layer.

• 동의생리병리학회지
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• 제22권3호
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• pp.535-539
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• 2008

Pulse diagnosis is one of the typical examination methods in traditional oriental medicine. Pulse type classification is a major element of this diagnosis. There are more than 20 pulse types which have each clinical significance. However, pulse type's indications are implicative and obscure. In this study, we reviewed string pulse which is often diagnosed in Traditional Korean Medicine by analysis of Traditional Oriental Medical Literatures and modern medical papers. String pulse is taut and stiff pulse with high tension and low softness. It appears in 'blood vessel endothelial dysfunction', 'autonomic imbalance', 'arteriosclerosis'. Persistent string pulse can bring about cardiovascular or central nervous disease.

• International Journal of Industrial Entomology and Biomaterials
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• 제5권1호
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• pp.123-126
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• 2002

More than three hundred million men in the world are suffering from erectile dysfunction. Korean ancient medical records say that the unmated male silkworm moth is effective in strengthening men's vitality, but no scientific examination has preyed its clinical efficacy. Currently, silkworm moths are not allowed for food-stuff. Thus, we selected silkworm of 14-days-after-metamorphosis, at which external morphology possesses that of pupae, but internal component is that of moths. To obtain the reliable source of unmated male silkworm moth, we used the sex-limited silkworm breed with larval marking. The body marker allows casual separation of sex during larval period, preventing mating right after emergence from cocoon. Using the extract prepared with the pupae of 14-days-after-metamorphosis, we investigated the tonic effect of the extract on the rat fed the extract for three weeks. The results showed that the testosterone levels in serum increased maximum by 19%, that of testicle increased maximum by 200%, and athletic endurance of the rats rose by 6%, suggesting positive tonic effect of the pupae prepared at the stage of 14 days after metamorphosis.