• Journal of architectural history
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• v.14 no.3 s.43
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• pp.39-52
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• 2005

This study relates to the architectural planning principle of Gyeonghoeru pavilion, one of the major buildings in Gyeongbokgung palace. The study is concentrated on The Book of Gyeonghoeru Pavilion written by Jeong Haksun in 1865 during the reconstruction of Gyeonghoeru pavilion. The architectural planning principle of Gyeonghoeru pavilion disclosed in The Book of Gyeonghoeru Pavilion appears to be 'the method of expanding with six by six system'. 'The method of expanding with six by six system' means a way of continuously extending the number related to 6 by addition, subtraction, multiplication and division, and reflecting to architecture, having number 6 as the basic number. Number 6 means a large amount of water in East Asian philosophy, Applying 'the method of expanding with six by six system' to the architecture of Gyeonghoeru includes an intention to prevent fire in a way of a type of incantation because Korean traditional wooden buildings are we to fire. Since Gyeonghoeru is surrounded by a pond and was constructed based on the number 6 having a strength of water, it was believed that it could be safe from fire. This study compares the contents disclosed in The Book of Gyeonghoeru Pavilion with the construction of Gyeonghoeru to find out how the number 6 was applied to the overall construction of Gyeonghoeru. From the fact that the total number of km of Gyeonghoeru is 36 ($6{\times}6$), the number of pillars is 42 ($6{\times}7$), and the number of windows and doors is multiples of 6, it has been found out that the number 6 is deeply related to the overall construction of Gyeonghoeru. In addition to the fact that the construction of Gyeonghoeru can be explained by 'the method of expanding with six by six system', The Book of Gyeonghoeru Pavilion also discloses parts where Diagram of Hotu, Later Heaven Arrangement and Arrangement of 64 Hexagrams are applied. Therefrom, it has been found out that Gyeonghoeru pavilion was constructed by applying the principles of East Asian philosophy based on The Book of Changes.

• The Korean Journal of Nuclear Medicine Technology
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• v.13 no.1
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• pp.57-62
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• 2009

Purpose: Brain SPECT study is more sensitive to motion than other studies. Especially, when applying 1-day subtraction method for Diamox SPECT, it needs shorter study time in order to prevent reexamination. We were required to have new study condition and analysing method on dual detector system because triple head camera in Seoul National University Hospital is to be disposed. So we have tried to increase image quality and make the dual and triple head to have equivalent study time by using a new analysing program. Materials and Methods: Using IEC phantom, we estimated contrast, SNR and FWHM. In Hoffman 3D brain phantom which is similar with real brain, we were on the supposition that 5% of injected doses were distributed in brain tissue. To compare with existing FBP method, we used fan-beam collimator. And we applied 15 sec, 25 sec/frame for each SEPCT studies using LEHR and LEUHR. We used OSEM2D and Onco-flash3D reconstruction method and compared reconstruction methods between applied Gaussian post-filtering 5mm and not applied as well. Attenuation correction was applied by manual method. And we did Brain SPECT to patient injected 15 mCi of $^{99m}Tc$-HMPAO according to results of Phantom study. Lastly, technologist, MD, PhD estimated the results. Results: The study shows that reconstruction method by Flash3D is better than exiting FBP and OSEM2D when studied using IEC phantom. Flowing by estimation, when using Flash3D, both of 15 sec and 25 sec are needed postfiltering 5 mm. And 8 times are proper for subset 8 iteration in Flash3D. OSEM2D needs post-filtering. And it is proper that subset 4, iteration 8 times for 15sec and subset 8, iteration 12 times for 25sec. The study regarding to injected doses for a patient and study time, combination of input parameter-15 sec/frame, LEHR collimator, analysing program-Flash3D, subset 8, iteration 8times and Gaussian post-filtering 5mm is the most appropriate. On the other hands, it was not appropriate to apply LEUHR collimator to 1-day subtraction method of Diamox study because of lower sensitivity. Conclusions: We could prove that there was also an advantage of short study time effectiveness in Dual camera same as Triple gamma camera and get great result of alternation from existing fan-beam collimator to parallel collimator. In addition, resolution and contrast of new method was better than FBP method. And it could improve sensitivity and accuracy of image because lesser subjectivity was input than Metz filter of FBP. We expect better image quality and shorter study time of Brain SPECT on Dual detector system.

• Journal of Korean Medical classics
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• v.23 no.5
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• pp.11-22
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• 2010

Treatise on the Pathogenesis and Manifestations of All Diseases(諸病源候論)was written by Chao Yuanfang that was most active during the Sui Dynasty at A.D. 610. It classified clinical medicine by some departments of internal medicine, surgery, obstetrics and gynecology, pediatrics, and otorhinolaryngology and within each specific department, categorizes etiology and pathology according to characteristics of various diseases. It was the total disease classification book that based on the bibles of the Oriental medicine, (Huangdi''s) Internal Classic(黃帝內經), Classic of Difficult Issues(難經) and Treatise on Cold Damage and Miscellaneous Diseases(傷寒雜病論), A-B Classic of Acupuncture and Moxibustion(鍼灸甲乙經), Essential Prescriptions Worth a Thousand Gold for Emergencies(備急千金要方) and Medical Secrets of an Official(外臺秘要). It was arranged tussive causes, classes, diagnosis, prognosis and stretching for treatment by Volume 13, all symptoms of tussiculation. Dialectic part was divided into cough(咳嗽), cough with dyspnea(咳逆上氣), cough with pus and blood(咳嗽吐膿血), cough with duck crying sound(?嗽), sudden cough(暴氣咳嗽), cough with dyspnea(咳逆), cough with dyspnea and vomiting(咳逆上氣嘔吐). Disease situation part was divided into the new cough(新咳) and old cough(舊咳), deficiency syndrome(虛證) and excess syndrome(實證), visceral cough(藏府咳), etc. Out of these, cough with counterflow(咳嗽上氣), cough with dyspnea(咳逆上氣), cough with dyspnea and vomiting(咳逆上氣嘔吐), cough with shortness of breath(咳逆短氣) have a close connection with dyspnea(上氣), counterflow of qi(逆氣), dyspnea and vomiting(上氣嘔吐) and shortness of breath(短氣) in the Pathogenesis and Manifestations of All qi(氣病諸候) of vol 13. So two parts may be refer to each other. However, the content on the original book has been addition and subtraction on the original context along with many reprints. Therefore, this paper, with regard to the prints of former editions, tried to help in better comprehension of the original context through readings and Korean translation.

• Journal of Elementary Mathematics Education in Korea
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• v.20 no.2
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• pp.193-213
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• 2016

This study has two goals. The First is to develop and apply a step-by-step program and the degree to which students' mathematical skills. The second is to analyze mathematical attitude change around the first grade students was done. The program for learning complement number is composed of series of 5 steps and 11 classes. Play for learning complement number, taking into account the difficulty of the learning steps 1-5 are organized. First step is composed of the classes which fragmented pieces of shapes to complete the entire geometry with fun activities for the entire part of the concept of learning and it maintenance concepts and can naturally learn by associating step. In second step, tools to take advantage of the real world and collecting the conservative concept. 3rd steps is to repair the mathematical concept of the parish in the learning stage of expansion. 4th step is halrigalri, number cards, making ten games etc. 5th step is to verify the concept of complement number and number operation ability. The concept of complement number through fun activities can improve students' mathematical skills, and mathematical attitude change. Early in the program, students use the finger to throw acid in the process. Simple addition and subtraction calculations may take a long time and error, but more and more we progress through the program using the fingers is eliminated and a more complex form calculations was not difficult to act out.

• Smart Media Journal
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• v.12 no.5
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• pp.111-121
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• 2023

The purpose of this study is to find methods for logo renewal design according to the brand life cycle, considering the logo as an important visual tool that represents the brand identity in terms of brand management. This study was conducted through literature study on brand life cycle and brand renewal strategy, an expert survey on logo renewal design, and logo analysis of 35 food and beverage brands with statistical data to determine brand life cycle. The results of the study are three. First, the four stages(introduction, growth, maturity, and decline) of brand life cycle characteristics and renewal strategies were derived. Second, four brand renewal strategies(partial change, total change, repositioning, new image creation) and methods for logo renewal design were proposed based on the life cycle of the brand. Based on this, renewal characteristics for each life cycle were proposed. Third, visual elements of identity that are important depending on the brand life cycle and brand renewal strategy were found. It was found that the addition and subtraction of graphic elements and change of color tone are important in the partial change strategy of the growth period and maturity period, and that the change of signature color is important in the repositioning strategy and the creation of the new image.

• Journal of Sasang Constitutional Medicine
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• v.10 no.2
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• pp.455-471
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• 1998

Background and Purpose : We intended to be helpful to understand constitutional symptoms of a disease and an application of the prescription through a clinical study of Soyangin Yangkyuksanwhatang. Methods : We studied 65 patients(40 men and 25 women) treated with Soyangin Yangkyuksanwhatang in constitutional clinic of Dongguk Pundang Oriental Hospital. And then we investigated the characteristics of Yangkyuksanwhatang treated patients, remedial values, onset of action and side effects. Results: Soyangin Yangkyuksanwhatang was used in all age groups both men and women. There were 37 kinds of chief complaints including chest discomfort, numbness of hands and feet, motor disturbance and skin disease etc. The distributions of remedial values were slightly improved(58.5%), much improved(12.3%), no improved(29.3%) and there was no aggravated patient. Using the prescription, mostly I prescribed only Soyangin Yangkyuksanwhatang without any changing, and added some herbs to the prescription according to the symptoms of a disease. Soyangin Yangkyuksanwhatang was affected in remedial values by the addition and subtraction of herbs. The onset of action in young age group was shorter than old age group. Side effects were palpitation, abdominal pain and indigestion etc.

• School Mathematics
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• v.15 no.4
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• pp.833-846
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• 2013

In this paper, the real state of using terms 'product', 'place value', 'nine-nine', and 'numeral' incorrectly or inconsistently in the area in Korean elementary school 1-2 grade math textbooks/workbooks are analyzed. Based on this analysis, the following four conclusions are presented. First, 'Product' should be defined in the ${\ll}$Math 3${\gg}$ textbook like 'sum' and 'difference'. Multiplication is introduced in the ${\ll}$Math 3${\gg}$ textbook/workbook, however, the result of that calculation is not referred to 'product'. Second, there is a need to reconsider the using the term 'place value' in 2nd elementary mathematics. In the ${\ll}$Math 3${\gg}$ and the ${\ll}$Math 4${\gg}$ textbooks/workbooks are not using the term 'place value' clearly. Third, the word 'addition nine-nine table' and 'subtraction nine-nine table' should not be used in the ${\ll}$Math 2${\gg}$ and the ${\ll}$Math 4${\gg}$ textbooks. Using the term 'multiplication nine-nine' and 'multiplication nine-nine table' in elementary school mathematics textbooks/workbooks instead of using the term 'nine-nine' and 'nine-nine table' respectively would be the possible cause of these inaccurate derivatives. Fourth, in 1st and 2nd elementary mathematics 'numeral' and 'number' should be used discriminately. There is a need to reconsider the using the term 'number' uniformly if possible.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.3
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• pp.103-108
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• 2016

In daily life, humans get stress very often. Stress is one of the important factors of healthy life and closely related to the quality of life. Too much stress is known to cause hormone imbalance of our body, and it is observed by the brain and bio signals. Based on this, the relationship between brain signal and stress is explored, and brain signal based stress index is proposed in our work. In this study, an EEG measurement device with 32 channels is adopted. However, only two channels (FP1, FP2) are used to this study considering the applicability of the proposed method in real enveironment, and to compare it with the commercial 2 channel EEG device. Frequency domain features are power of each frequency bands, subtraction, addition, or division by each frequency bands. Features in time domain are hurst exponent, correlation dimension, lyapunov exponent, etc. Total 6 subjects are participated in this experiment with English sentence reading task given. Among several candidate features, ${\frac{{\theta}\;power}{mid\;{\beta}\;power}}$ shows the best test performance (70.8%). For future work, we will confirm the results is consistent in low price EEG device.

• Journal of Elementary Mathematics Education in Korea
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• v.20 no.3
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• pp.431-456
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• 2016

The purpose of this study is to investigate the appropriate time of introduction and the usage of the number line, in order to suggest the right point of learning the number concept to the elementary school students. For the efficient achievement of this purpose, we investigated the mathematical models for constructing the number concept such as number line, empty number line and double number line, counting and development of number concept. Then, we conducted case study on the time of introduction and the usage of the number line. Finally, we analyzed the result. First, there is need for adjustment to conduct the introduction of the number line from the second year of elementary school, so to help the students understand the continuing number concept through the understanding on the metaphorical concept of the number line. Second, there is the need of positive introduction and the use on the mathematical models; empty number line which helps to draw various thinking strategy visually through the process of operations such as addition and subtraction; the division into equal part and division by equal part in which multiplicative comparative situation or division takes place; the double number line which helps to understand the rate or proportional distribution. Finally, when adopting the number line, the empty number line, or the double number line, we suggested the necessity of learning about elaborate guidance and the usage in order to fully understand the metaphorical concept of the number line.

• Education of Primary School Mathematics
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• v.20 no.3
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• pp.205-224
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• 2017

A model method has been known as the main characteristic of Singaporean elementary mathematics textbooks. However, little research has been conducted on how the model method is employed in the textbooks. In this study, we extracted contents related to the model method in the Singaporean elementary mathematics curriculum and then analyzed the characteristics of the model method applied to the textbooks. Specifically, this study investigated the units and lessons where the model method was employed, and explored how it was addressed for what purpose according to the numbers and operations. The results of this study showed that the model method was applied to the units and lessons related to operations and word problems, starting from whole numbers through fractions to decimals. The model method was systematically applied to addition, subtraction, multiplication, and division tailored by the grade levels. It was also explicitly applied to all stages of the problem solving process. Based on these results, this study described the implications of using a main model in the textbooks to demonstrate the structure of the given problem consistently and systematically.