• Archives of Craniofacial Surgery
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• v.21 no.2
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• pp.123-126
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• 2020

Skin cancer, which often occurs as a result of skin exposure to ultraviolet light radiation, usually presents with characteristic abnormal features, such as ulcerative lesions, irregular morphology, bleeding, and excessive growth. Therefore, skin cancer rarely resembles a benign tumor on visual inspection. Nonetheless, squamous cell carcinoma and basal cell carcinoma with nodular or polypoid features can have a similar appearance to that of benign tumors, meaning that they are sometimes misdiagnosed as benign. As benign and malignant tumors have some overlapping features, clinicians sometimes use additional imaging techniques such as ultrasonography to improve the accuracy of the diagnosis because even a malignant tumor that externally resembles a benign tumor generally has internal morphological features characteristic of malignancy, such as invasion and irregular borders. However, these imaging tools also have limitations, and punch or excisional biopsy can be needed if malignancy cannot be completely ruled out. Herein, we report a case of skin malignancy initially misdiagnosed as a benign epidermal cyst based on external visual inspection and ultrasonography.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2001.10a
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• pp.272-276
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• 2001

Multicomponent $Zr_{41.2}Ti_{13.8}Cu_{12.5}Ni_{10}Be_{22.5}$ bulk matallic glass alloy shows good bulk glass forming ability due to its high resistance to crystallization in the undercooled liquid state.1) In this study, DSC and X-ray diffractometry have been performed to confirm the amorphous structure of the master $Zr_{41.2}Ti_{13.8}Cu_{12.5}Ni_{10}Be_{22.5}$ alloy. To investigate the mechanical properties and deformation behaviors of the bulk metallic $Zr_{41.2}Ti_{13.8}Cu_{12.5}Ni_{10}Be_{22.5}$ alloy, a series of compression tests has been carried out at the temperatures ranging from $351^{\circ}C$ to $461^{\circ}C$ and at the various initial strain rates from $2{\times}10^{-4}s^{-1}\;to\;2{\times}10^{-2}s^{-1}$. There are two types of nominal stress-strain curves. The one shows linear stress-strain relationship meaning fracture at maximum stress, the other shows plastic deformation including steady-state flow. Also DSC analysis for the compressed specimens has been performed to investigate the change of thermal stability and crystallization behavior for the various test conditions.

• Proceedings of the KSME Conference
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• 2001.06e
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• pp.825-830
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• 2001

A numerical study on a quantitative analogy of the fully developed flow between in a straight square duct rotating about an axis perpendicular to that of the duct and a stationary curved duct of square cross-section is carried out. In order to clarify the similarity of two turbulent flows, the dimensionless parameters $K_{TR} = Re^{1/4}/\sqrt{Ro}$ and the Rossby number, Ro, in a rotating straight duct flow were used as a set corresponding to $K_{TC} = Re^{1/4}/\sqrt{{\lambda}}$ and curvature ratio, ${\lambda}$, in a stationary curved duct flow so that they have the same dynamical meaning as $K_{LR} = Re/\sqrt{Ro}$ and $K_{LC} = Re/\sqrt{{\lambda}}$ of the fully developed laminar flows. For the large values of Ro or A, it is shown that the flow field satisfies the asymptotic invariance property: there are strong quantitative similarities between the two flows such as flow patterns and friction factors for the same values of $K_L$ and $K_T$.

• Journal of the Korean Institute of Landscape Architecture
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• v.28 no.1
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• pp.118-128
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• 2000

Based upon the cases of two conventional market places of Seoul (Chungryangri and Hwanghakdong Market0, this study seeks, in mainly the insiders's view, to find out the micro meaning of conventional market places in the city. In-depth interviews for longer than six months were used to get life histories and daily life records from the merchants. From the result of the in-depth interviews, it was found that, for the insider's view, conventional markets are places where lower class people (or people who leave their farm lands for a city) easily settle down, as shoed in the two families' settlement history in the two conventional markets are very much similar to those in their home places. In conclusion, as represented in these two markets, conventional market places are not only the places that provides jobs to their merchants but also the places where the merchants' lives are continued, developed and reproduced. Based upon the both outsider's and insider's views, it is suggested that the recent modernization and redevelopment process to deal with conventional markets should change its direction and search for other solutions.

• Korean Journal of Organic Agriculture
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• v.14 no.3
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• pp.267-285
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• 2006

This study diagnosed the managerial ability of farmers in the Gokseong area and the Gwangyang area, and analysis was conducted especially placing focus on the difference in managerial ability on whether environmental friendly agriculture has been implemented or not. According to the analysis results, the average score of all the farmers was 63.9 out of the full score of 100 which can be seen to be a medium to high standard. Also, in the diagnosis results according to whether environmental friendly agriculture has been implemented or not, the ability scores of farmers practicing environmental friendly agriculture were higher than those who were not, but large differences between the item scores for information ability and cooperative ability were shown. This is connoting a very important meaning in terms of the point that correspondence is being made to the conditions required to possess market response capabilities to the high information systemization society to unfold in the future. As a result, the important issue can be seen to be personnel cultivation in order to possess self response capabilities through the development of education programs that can improve this kind of managerial ability and revision of support systems.

• Journal of the Korean housing association
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• v.16 no.6
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• pp.9-19
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• 2005

It is possible to explain the design, the meaning, and the use of domestic space by comparing different cultures. The characteristics of Koreans' housing life living in western cultures has already been studied extensively. Because of political reasons, however, the characteristics of Koreans' housing life living in Chinese culture has hardly been studied at all. The purpose of this study was to find out the characteristics of succession and transformation of domestic housing culture. The data was collected by questionnaire methods from fifty Korean households and eleven Chinese households. Individual interviews and actual surveys, including taking pictures were also used for data collection. The results of this study were as follows (1)An analysis of heating system usage behaviors showed the importance of heated floors, known as Ondol, is one of the enduring characteristics of domestic habits. (2)In the sitting style, the traditional sitting on the floor was shown in living room. (3)Regarding room usage behavior, Korean households were centered around the living room in chinese houses. (4)An analysis of space organization preferences with respect to common spaces revealed that Korean households tend to prefer the open plan of common spaces.

• Journal of The Korean Association For Science Education
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• v.33 no.3
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• pp.639-649
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• 2013

The purpose of this study is to figure out how teachers conduct an experiment in measuring the size of the Earth and how students recognize it. For this study, an in-depth interview was conducted one week after the lesson on the experiment about measuring the size of the Earth. The participants were five secondary school teachers and five secondary school students. The in-depth interview was recorded and transcribed. The result of the interview was drawn through an inductive categorized analysis method. As a conclusion of this study, the teachers taught the students the lesson using alternate angles instead of using the altitude of the Sun. Their lessons were based on Eratosthene's story or some related illustrations suggested in the textbook and not based on an explanation of the principle. Also, students measured the Earth's size only by using alternate angles and didn't understand the meaning of the shadow in the experiment. The results of this study show that teachers need to reconstruct the textbook and understand the accurate experimental principle for the students to have a meaningful experience of the experiment on measuring the size of the Earth.

• Korean Journal of Childcare and Education
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• v.12 no.5
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• pp.91-113
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• 2016

This study aims to find out the significance in the experiences of voluntary participation in small groups by mothers of young children. As a result of the interviews conducted by targeting five mothers, the total was divided into three categories and six sub-factors. First, mothers voluntarily participated in small groups. Free from the role of mother and wife, they focused on their real selves, and had experiences of emotional support by forming close relationships with people. Second, mothers did not just participate in small groups as a hobby, but tried to be role models that help the growth of their children. They also tried to be the catalyst that helps create positive changes in their children and husbands. Third, mothers had social experiences, participated in economic activities as members of society or exerted their capabilities through active exchange with other people. Finally, this research hopes to provide the community with parent education-related implications that can have a positive impact on mothers themselves, their families and society.

• Journal of Families and Better Life
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• v.26 no.4
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• pp.149-162
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• 2008

The purpose of this study is to provide a meaningful thought to professionals and administrators of Korea working for Consumer General Education development at their Universities. Also, tips for organizing and meaning Consumer General Education Curriculum effectively are provided. Finally, the study suggests essential elements to improve qualities of Consumer General Education in Korea Universities. This study's method are content analysis through web site and survey. The subjects of this survey were 257 students. The data were collected by qusetionaires developed by researcher and analyzed by frequencies, correlation Analysis, One Way Anova, Duncan Test, Factor Analysis, Multiple Regression Analysis. The major findings were as follows: University students's satisfaction level about General Education was low and the needs level about Consumer General Education was high. And the education service quality showed factors to be administrative service element, professor service element, classroom environment element, communication element. And Multiple Regression Analysis on each of the education service quality factors had been significant effects for find out the differences in the degree of satisfaction.

• Convergence Security Journal
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• v.14 no.3_1
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• pp.71-77
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• 2014

Students in the NCO department who have concluded the agreement with army headquarters, exercise camp education environment and the method on how to carry out the education. In order to raise awareness on NCOs and obtain pride as a future army NCO, army field training is held once a year. The stress on the education is the establishment of national security awareness, proficiency in basic army training, awareness of NCO pride, and basic posture as a soldier. The demand for commissioning only those with satisfactory army field training results is becoming stronger. The satisfaction of the education states a clear goal as a future NCO. This army field training has a meaning when the demands and expectations of the trainee leads to a form of commissioning.