• Journal of Power Electronics
• /
• v.19 no.6
• /
• pp.1566-1574
• /
• 2019

Maximum power point tracking (MPPT) under the partial shading condition is a challenging research topic for photovoltaic systems. Shaded photo-voltaic module result in complex peak patterns on the power versus voltage curve which can misguide classical MPPT algorithms. Thus, various kinds of global MPPT algorithms have been studied. These have typically consisted of partial shading detection, global peak search and MPPT. The conventional partial shading detection algorithm aims to detect all of the occurrences of partial shading. This results in excessive execution of global peak searches and discontinuous operation of the MPPT. This in turn, reduces the achievable power for the PV module. Based on a theoretical investigation of power verse voltage curve patterns under various partial shading conditions, it is realized that not all the occurrences of partial shadings require a global peak search. Thus, an intelligent partial shading detection algorithm that provides exact identification of global peak search necessity is essential for the efficient utilization of solar energy resources. This paper presents a new partial shading determinant algorithm utilizing adaptive threshold levels. Conventional methods tend to be too sensitive to sharp shading patterns but insensitive to smooth patterns. However, the proposed algorithm always shows superb performance, regardless of the partial shading patterns.

• The Research Journal of the Costume Culture
• /
• v.11 no.3
• /
• pp.367-374
• /
• 2003

When analyzing forms in the human body and clothes, we conceptualize each part into a cone, sphere, and cylinder, and the esthetic characteristics of our fashion culture and esthetic fashion characteristics of Koreans are composed by expressing with universal images such as circle, square, and triangle when forms are expressed in a plane. To determine how the structural principle of shapes that are the shapes of all things and basic to geometry, i.e., circle, square, and triangle, applies to clothes that cloth our body called the small cosmos, we discussed the symbolic meaning hidden inside the structure of Korean clothes based on the basic pattern drafting method of Korean men’s traditional trousers. We drew the conclusion that Korean men's trousers composed of circles, triangles, and squares express the five elements diagram through their plane structure, are designed in circles with cones and pyramids, and are made to well express the principle of the small cosmos of our body. Moreover, when the basic pattern of Korean men’s trousers explained with the antipathy diagram is viewed to create all things while maintaining opposite and complementary relationship with Sangsang (mutually benefitting factor), it would be correct to say that the principle of the top verse the bottom is viewed as conflicting. From the structural point of view, since the philosophy of the Samsu principle (the principle of 1, 2 and 3 in which 1 represents the heaven, 2 represents the earth, and 3 represents the people) is hidden in Korean men's trousers in which Hurimalgi (the part of trousers corresponding to the waist band of Western pants) is the circle representing the heaven, Marupok is the square representing the earth, and Sapok is the triangle representing the people, we could look at deep meaning of our ancestors expressed in our clothes.

• Journal of Korean Medical classics
• /
• v.32 no.3
• /
• pp.131-146
• /
• 2019

Objectives : The aim of this paper is to study the methodology for effectively analyzing the "Jinguiyaolue" prescriptions using database, and to explore possibilities of applying the data construction and query produced in the process to comparative research with other texts in the future. Methods : Using "Xinbianzhongjingquanshu(新編仲景全書)" as original script, the contents of "Jinguiyaolue" were entered into the database, in which one verse would be separated according to content for individual usage. Also, data with medicinal construction and disease pattern information of the previously constructed "Shanghanlun" database designed for comparison with other texts was applied for comparative analysis. Results : For input and analysis, 6 tables and 12 queries were made and used. Formulas were accessible by using herbal combinations, and applications of these formulas could be assembled for comparison. Formulas were also accessible by using disease pattern combinations, and combinations of herbs and disease pattern together were also applicable. In comparison with other texts, examples and frequency of usage of herbs could be relatively accurately compared, while disease patterns could not easily be compared. Conclusions : Herbal combinations, disease pattern combinations could yield related texts and herb/disease pattern combinations of the prescriptions in the "Jinguiyaolue", which shortened time needed for research among formulas in texts. However, standardization research for disease pattern is necessary for a more accurate comparative study that includes disease pattern information.

• Journal of Korean Medical classics
• /
• v.33 no.4
• /
• pp.147-165
• /
• 2020

Objectives : The meaning of the verses '久而增氣' and '氣增而久' from the 『Suwen·Zhizhenyaodalun』 were studied to complement previous annotations. Methods : Based on problems uncovered in previous annotations, the verses "久而增氣, 物化之常也" and "氣增而久, 夭之由也" were examined in detail. Results & Conclusions : Previous annotations on the verse "久而增氣, 物化之常也" have conflicting opinions. Therefore, related contents in the 『Huangdineijing』 were examined to resolve and complement existing interpretations. The meaning of '久' in the phrase "久而增氣, 物化之常也," not only has a temporal meaning but also refers to the Jing process[精化｣. The Jing process is where the Jing Qi is used to produce Jing through a feedback process that results in enlivening materials such as Jing, Qi, and Blood. The phrase "氣增而久, 夭之由也" refers to an early death caused by expansion of rough Qi that has failed to go through the Jing process because of excessive greed and failure to follow the seasonal principle. These phrases from the 『Suwen·Zhizhenyaodalun』 reminds us that the Qi's Jing process is an important factor in determining longevity, shedding new light on themes such as the pattern of food intake, cultivation, longevity, treating before illness, prevention, etc., for today.

• Journal of Korean Medical classics
• /
• v.32 no.2
• /
• pp.111-134
• /
• 2019

Objectives : To identify differences in perspective between "Jinguiyuhanjing" and "Songbenshanghanlun" in regards to Baihutang and Baihujiarenshentang through comparative analysis of relevant verses of the two texts. Methods : Comparative analysis was undertaken based on the hypothesis that the two texts are relatively unrelated to each other in their transmission. Relevant verses were examined to identify their differences, followed by analysis of the overall context based on these variations to determine the difference in perspective between the two texts. Results & Conclusions : While in "Songbenshanghanlun" the relationship between the two patterns were ambiguous and conflicting at times, in "Jinguiyuhanjing" the relationship was clear-cut, and similar patterns that could be mistaken were systematically explained. From the perspective of "Songbenshanghanlun", the key traits of "Jinguiyuhanjing" could be summarized into two. First, in "Songbenshanghanlun", it says that if there are exterior symptoms, Baihutang cannot be applied, which naturally excludes Baihujiarenshentang. However in "Jinguiyuhanjing", exterior symptoms constitute the Baihujiarenshentang pattern. Second, in "Songbenshanghanlun" contraindication of Baihutang concerning miscellaneous symptoms are reduced in the form of footnotes which meaning is unclear, while in "Jinguiyuhanjing" the three points of contraindication of Baihutang are listed separately under verse no. 170, with relevant verses listed organically, explaining in great detail the Baihutang pattern, its relation to similar patterns and treatment.

• Journal of Korean Medical classics
• /
• v.35 no.2
• /
• pp.33-49
• /
• 2022

Objectives : This paper aims to investigate the role of the sweet flavor within the contexts of 'pungent and sweet becoming Yang' and 'sour and sweet becoming Yin' and the meaning of the two concepts. Methods : Related contents in databases including the Siqu Quanshu were searched with 'pungent and sweet becoming Yang' and 'sour and sweet becoming Yin', whose understanding and application were examined. Results & Conclusions : The theories of 'pungent and sweet becoming Yang' and 'sour and sweet becoming Yin' originate from Cheng Wuji's comparison of the Gancaoqianjiangtang and Shaoyaogancaotang in the 29th verse of the Shanghanlun. The two terms first appeared in the Qing period among the Wenbing school. In other medical texts, the combination with sweet flavors could be found with salty, bitter and bland flavors other than with pungent and sour. The role of the sweet flavor in 'pungent and sweet becoming Yang' and 'sour and sweet becoming Yin' is to accomplish the dispersing and converging action slowly and effectively, by supplying energy in small amounts preventing it from happening too quickly, corresponding to its Earth nature of the Five Elements which harmonizes the Yin and Yang. While 'becoming Yin' and 'becoming Yang' could be understood as tonifying Yin and Yang, it could also be understood as 'doing Yin' and 'doing Yang', The specific actions differ according to herb and mixture. The point of distinction between the aforementioned tonification and that of medicinals that have Yin and Yang tonifying properties is that due to the other flavor that is matched with the sweet flavor, Qi is given motility which allows for tonification without stagnation.

• Lingua Humanitatis
• /
• v.2 no.2
• /
• pp.5-50
• /
• 2002

This paper aims to illustrate and illuminate the relationship between language and its neighbor disciplines, in particular between language and literature, language and religion, and language and music. 1. Language and literature. Literature is an art of language. Therefore, linguistics, the science of language, should be able to explain how the grammar of literature elevates and ordinary language into a literary language. I illustrate poetic syntax with examples from Shelley, Coleridge, and Wordsworth. 2. Language and religion. I show how a linguistic analysis of a religious text can illuminate the background, authorship, chronology, etc., of a religious text with an example from the Book of Daniel. I also illustrate how a misanalysis of a poetic meter led to a mistranslation with an example from the Book of Psalms. 3. Language and music. First I trace an epochal event in the history of the Western music, i.e., the change of the musical style from the liturgical music of Latin in which the rhythm was created by the alternation of syllable duration into the liberated music of German in which the rhythm was generated by the alternation of lexical stress. I then illustrate a parallelism between linguistic and musical structures with several musical pieces including Gregorian chant, the 16th century music of Palestrina, the 17th century music of Schutz, the 18th century music of Mozart, and the 19th century Viennese music. Finally, the importance of text-tune (verse-melody) association is discussed with examples of mismatches in translated Korean hymns and contemporary Korean lyrical songs. In the concluding part, I speculate on some factors that are responsible for the same organizational devices in three different modes of human communication. An answer may be that all are under the same laws of mind that govern the way man perceives and organizes nature, i.e., the same cognitive abilities of man, in particular, the capacity to organize and impose structure on their respective inputs.

• Journal of the Korean Institute of Rural Architecture
• /
• v.13 no.1
• /
• pp.45-54
• /
• 2011

The results of examining the architectural features and changes of the main building of Dogapsa temple which is multi roofs wooden structure are as follows. The passage comparing 'Dogapsa' of <>, account of Lee Ha Gon's trip as the literature showing the appearance of Dogapsa temple in the early 18th century to Borimsa through verse of 'Dutacho' was noticeable. Dogapsa temple at Yeongam was distant over 100 ri from Borimsa temple at Jangheung and it was considered that there were many temples at Mt. Wolchul, Yeongam and there were also many temples to be comparable with it. But, Dogapsa temple was compared to Borimsa temple because verses 'many-storied building is high and immense' of 'Dogapsa' at <> and 'Dogapsa is lower than Borimsa at Jangheung' at 'Dutacho' of <> were interpreted as the existence of multi roofs Buddhist temple which had something in common with Dogapsa and Borimsa and was comparable to them. According to existing materials, it was assumed that the main building of Dogapsa was burnt through the Japanese invasion of Korea in the 52nd year of the sexagenary cycle (Eulmyooebyeon, 1555) and Jungyujaeran (1597), but record of major history of the main buildings of Dogapsa and Borimsa indicated that multi roofs wooden structure of the two temples were built at the same period. Since multi roofs wooden structure of main building of Borimsa was rebuilt in 1692, these buildings existed from the early 18th century to middle 18th century.

• Journal of Korean Medical classics
• /
• v.25 no.2
• /
• pp.141-168
• /
• 2012

Objective : The objective of this paper is to study the characteristics of the categorization of acupuncure points of the Lung Meridian(肺經) based on Hwangdineijingmingtang(黃帝內經明堂). Method : This paper examines several texts regarding the Lung Meridian. Result and Conclusion : Out of Yang Shangshan(楊上善)'s work, the theoretical aspects are presented in Hwangdineijingmingtang, whereas contents regarding acupuncture points are presented in Hwangdineijingmingtang. This is due to Yang's position as an imperial doctor(太醫侍御). In Hwangdineijingmingtang, Yang explains the characteristics of Metal(金) based on Hwangdineijingmingtang followed by an explanation of the acupuncture points of the Lung Meridian, which shows his emphasis on the relationship between the meridian as the main branch and the viscera. Along this medical logic, Yang must have included LU1(中府) into the Lung Meridian. This is Yang's unique point of view, distinguishing itself from other texts regarding the Lung Meridian. Apart from the means of explanation of the Lung Meridian by Yang, the verse 'made a volume for each 12 meridian' in the introduction of Hwangdineijingmingtang, discussion of the main treatable diseases of Hwangdineijingmingtang, contents on pathways of Lingshu Jingmai(靈樞 經脈), the start and end points of the meridians in Lingshu Maidu(靈樞 脈度) points to the assumption that each acupuncture point's belonging meridian known to us today was fixated by Yang.

• The Journal of the Society of Korean Medicine Diagnostics
• /
• v.15 no.3
• /
• pp.223-234
• /
• 2011

Objectives: This study shows feasibility and suitability of a microelectromechanical system inertial measurement unit(MEMS-IMU) as a helpful measurement device for evaluating movement system impairment syndrome. Methods: We reviewed articles of two fields in this study. First, we reviewed articles about movement system impairment syndrome(MSIS) as a brand new viewpoint of diagnosing and treating musculoskeletal pain. Second, we reviewed articles about conventional motion analysis system and inertial measurement unit(IMU) to show the superiority of IMU in analyzing the human movement. All papers were searched by SciVerse, world largest search engine and database about many academic fields including engineering and medicine. Results: Some physical quantities of human motions can be useful to the diagnosis of MSIS, and those data can be obtained by the MEMS-IMU without the weak points of the conventional motion analysis systems. Conclusions: Using MEMS-IMU as a measurement unit for diagnosing and evaluating MSIS is feasible and can be extended to many further studies.