• KIEAE Journal
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• v.10 no.6
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• pp.11-19
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• 2010

To meet with the nation's policy of Green Growth, local governments are rushing to propose an ecological urban development plan. And although various studies stress on the need of ecological planning to harmonize development with preservation, we have come to a point in which a quantitative evaluation of how much ecological planning contributes to the environmental load is needed. Through the increasing tendency of making plans based on the development of IT technology, capability of gathering environmental data and scientific instrument, studies on ecological planning's effect towards environmental load has recently begun. This study aims to perform a quantitative evaluation on how ecological planning mitigate urban heat island in the region of Namyang-ju Wallsanli. Three theories were used to mitigate urban heat island ; White network, Green network and Blue network. As a result, the atmosphere temperature was reduced the whole site $1.1^{\circ}C$ and partly $7^{\circ}C$ and the mean radiant temperature was reduced the whole site $1.1^{\circ}C$ and partly $8.7^{\circ}C$ on the modified ecological landscape plan in summer. The PMV index is 0~1 in ecologically modified landscape plan otherwise almost 3 in landscape plan. This study has its limits on the fact that results may differ from the actual plan as the study was performed based on the land use plan and building plan. However, what is important is that it shows a quantitative result of the effect that ecological planning has on surrounding environment and reducing environmental load.

• Advances in nano research
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• v.8 no.2
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• pp.135-148
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• 2020

The incorporation of carbon nanotubes in a polymer matrix makes it possible to obtain nanocomposite materials with exceptional properties. It's in this scientific background that this work was based. There are several theories that deal with the behavior of plates, in this research based on the Mindlin-Reissner theory that takes into account the transversal shear effect, for analysis of the critical buckling load of a reinforced polymer plate with parabolic distribution of carbon nanotubes. The equations of the model are derived and the critical loads of linear and parabolic distribution of carbon nanotubes are obtained. With different disposition of nanotubes of carbon in the polymer matrix, the effects of different parameters such as the volume fractions, the plate geometric ratios and the number of modes on the critical load buckling are analysed and discussed. The results show that the critical buckling load of parabolic distribution is larger than the linear distribution. This variation is attributed to the concentration of reinforcement (CNTs) at the top and bottom faces for the X-CNT type which make the plate more rigid against buckling.

• Journal of Physiology & Pathology in Korean Medicine
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• v.21 no.6
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• pp.1365-1380
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• 2007

Based on the theories and clinical data of oriental medicine, traditional medicinal prescriptions known to be effective to diabetic nephropathy were collected. The prescriptions were carefully examined and analyzed in order to be used as fundamental material for experiments and in clinicals. More than 40 publications related to diabetes were arranged and analyzed. Of the complications, diabetic nephropathy part of the publications were specifically focused during analysis. Data were analyzed and classified according to the quantity, prescription, differentiation of symptoms, signs and addition and subtraction of each medicine. Frequently used medicines were statistically analyzed. The most frequently used prescription was Yukmigihwang-tang(六味地黃湯) based medicine and prescriptions of its addition and subtraction, which was 15% of the total prescriptions cited. The most frequently used medicine was Astragali Radix, mentioned 192 times in the prescriptions. Hoelen was next with 180 citations, followed by Dioscoreae Rhizoma with 147 times, Rehmanniae Radix with 140, Corni Fructus with 131, Salviae Miltiorrhizae Radix with 106, Angelicae Gigantis Radix with 101, Alismatis Rhizoma with 95, Rhei Rhizoma with 90, Atractylodis Rhizoma Alba with 84, Rehmanniae Radix Preparata with 78, Leonuri Herba with 74, Moutan Cortex Radicis with 66, Aconiti Lateralis Preparata Radix with 66 Cnidii Rhizoma with 65, Pseudostellaria heterophylla with 62, Liriopis Tuber with 55, Lycii Fructus with 52, Rhei Rhizoma with 49, Codonopsis Pilosulae Radix with 44, Paeoniae Radix Rubra with 44, Schisandrae Fructus with 42, Polyporus with 42, Achyranthis Radix with 41 and Euryales Semen with 40. Medicines prescribed more than 30 grams a day included Astragali Radix, Imperatae Rhizoma, Benincasae Pericarpium, Leonuri Herba, Dioscoreae Rhizoma, Plantaginis Semen, Polyporus, Hoelen, Halloysitum Rubrum, Achyranthis Radix, Arecae Pericarpium, Phaseoli Angularis Semen, Coicis Semen, Rhei Rhizoma, Salviae Miltiorrhizae Radix, Sargassum, Ostreae Concha, Pseudostellaria heterophylla, Epimedii Herba, Rehmanniae Radix, Scrophulariae Radix and Polygonati Rhizoma. No scientific reports on the traditional medicinal aspects of diabetic nephropathy was searched. This analysis report would be able to provide the basis of developing new drug candidates for the treatment of diabetic nephropathy, as well as securing the EBM for the traditional medicines already being prescribed to the patients.

• The Journal of Korean Medical History
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• v.29 no.1
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• pp.89-101
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• 2016

Hae-Yong Shin was a renowned merchant during the transitional period from Korean Imperialism to Japanese Occupation, and devoted his life during the period of Japanese Occupation as a proponent of patriotic enlightenment movement and translator. He also authored many medical and scientific works; in particular, he integrated the modern Western medicine into the Korean herbal medicine in his writings. His early works include New Edition of Natural History (1907), Physiology published in six series in the YaRoe, a magazine for the patriotic enlightenment movement, and the New Edition of Zoology (1908). These writings are assumed to have deepened Shin's knowledge of and insights into human and animal physiologies and anatomies. In the Danbang-Biyo-Gyeongheom-Shinpyeon (1913), he sought to incorporate the aspects of the Western medicine while mainly adopting the approach of the Korean herbal medicine. While keeping the contents and formations of Donguibogam, he recorded many empirical prescriptions and deleted theories incomprehensible for the general population, shamanic prescriptions, and poisonous and deadly ingredients. Its most salient features are the use of the Korean vernacular script for explications and simple ingredients for prescriptions. As medicinal materials, he presented commonly found low-cost native ingredients easily obtainable and affordable for. In the disciplines of childbirth, childbearing, and first aid, he adopted Western medical treatments. Danbangshinpyeon is particularly significant in that it contributed to public health by spreading practical basic medical knowledge in the vernacular script easily applicable at home in difficult situations for obtaining medical services under the Japanese colonial rule.

• Journal of the Society of Disaster Information
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• v.15 no.1
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• pp.121-132
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• 2019

Purpose: This study aims to analyze the meaning of architectural space of Alvar Aalto, which is based on architectural theories of periodic flows and the form of the space with the various elements applied to the works. Method: It analyzes the interrelationships of light, form and material in triangular composition by synthesizing the architectural vocabulary of Alvar Aalto from the viewpoint of modernism. Results: The architectural works of Alvar Aalto are centered on the combination of light, form, material, and space diversity, emphasizing social awareness and linking the human scale with the building environment. Conclusion: The structure of the Alvar Aalto is a synonym of nature and culture, society and individuals, standardization and diversity, universality and locality, intellectual and emotional, scientific and human psychological. It is possible to apply reciprocity elements to architectural spaces in a comprehensive manner while being different from each other in terms of rationality and immediacy.

• Advances in nano research
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• v.11 no.6
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• pp.581-593
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• 2021

This model is proposed to describe the buckling behavior of Carbon Nanotubes (CNTs) embedded in an elastic medium taking into account the combined effects of the magnetic field, the temperature, the nonlocal parameter, the number of walls. Using Eringen's nonlocal elasticity theory, thin cylindrical shell theory and Van der Waal force (VdW) interactions, we develop a system of partial differential equations governing the buckling response of CNTs embedded on Winkler, Pasternak, and Kerr foundations in a thermal-magnetic environment. The pre-buckling stresses are obtained by applying airy's stress function and an adjacent equilibrium criterion. To estimate the nonlocal critical buckling load of CNTs under the simultaneous effects of the magnetic field, the temperature change, and the number of walls, an optimization technique is proposed. Furthermore, analytical formulas are developed to obtain the buckling behavior of SWCNTs embedded in an elastic medium without taking into account the effects of the nonlocal parameter. These formulas take into account VdW interactions between adjacent tubes and the effect of terms involving differences in tube radii generally neglected in the derived expressions of the critical buckling load published in the literature. Most scientific research on modeling the effects of magnetic fields is based on beam theories, this motivation pushes me to develop a cylindrical shell model for studying the effect of the magnetic field on the static behavior of CNTs. The results show that the magnetic field has significant effects on the static behavior of CNTs and can lead to slow buckling. On the other hand, thermal effects reduce the critical buckling load. The findings in this work can help us design of CNTs for various applications (e.g. structural, electrical, mechanical and biological applications) in a thermal and magnetic environment.

• The Korean Journal of Franchise Management
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• v.5 no.1
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• pp.65-84
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• 2014

The purpose of this study is to review the theories and cases of performance sharing in the franchise industry to present a method for more effective franchise performance-sharing. To that end, this study reviewed the theory on resource dependence and the theory on inequality to describe the performance-sharing between the franchisor and the franchisee and their relationship. It also looked at the cases of a week-in cooler system at 'Beer Market', the allocation of fees for alcoholic beverage sales to franchisees, the scholarship program of 'Onigiri and Ikyudon' and 'Bonsamo' which is a franchisees' committee for Bonjuk to introduce examples of performance-sharing. Through a theoretical review and case review, this study presents five types of methods for performance-sharing. First, 'the sharing of core competence by the franchise company; second, 'the establishment of a royalty culture'; third, 'scientific analysis of markets and establishment of a revenue forecast system'; fourth, 'reinforced financial support from the franchisor'; and lastly, 'the positive application of franchisees' committees'. Such methods are expected to provide a groundwork for mutual benefit and co-prosperity between franchisor and franchisee.

• The Journal of the Convergence on Culture Technology
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• v.9 no.3
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• pp.655-662
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• 2023

Big data research plays a role of supplementing existing social science research methods. If the survey and experimental methods are somewhat inaccurate because they mainly rely on recall memories, big data are more accurate because they are real-time records. Social science research so far, which mainly conducts sample research for reasons such as time and cost, but big data research analyzes almost total data. However, it is not easy to repeat and reproduce social research because the social atmosphere can change and the subjects of research are not the same. While social science research has a strong triangular structure of 'theory-method-data', big data analysis shows a weak theory, which is a serious problem. Because, without the theory as a scientific explanation logic, even if the research results are obtained, they cannot be properly interpreted or fully utilized. Therefore, in order for big data research to become a methodological innovation, I proposed big thinking along with researchers' efforts to create new theories(black boxes).

• Steel and Composite Structures
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• v.49 no.5
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• pp.487-502
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• 2023

In the realm of nanotechnology, the nonlocal strain gradient theory takes center stage as it scrutinizes the behavior of spinning cantilever nanobeams and nanotubes, pivotal components supporting various mechanical movements in sport structures. The dynamics of these structures have sparked debates within the scientific community, with some contending that nonlocal cantilever models fail to predict dynamic softening, while others propose that they can indeed exhibit stiffness softening characteristics. To address these disparities, this paper investigates the dynamic response of a nonlocal cantilever cylindrical beam under the influence of external discontinuous dynamic loads. The study employs four distinct models: the Euler-Bernoulli beam model, Timoshenko beam model, higher-order beam model, and a novel higher-order tube model. These models account for the effects of functionally graded materials (FGMs) in the radial tube direction, giving rise to nanotubes with varying properties. The Hamilton principle is employed to formulate the governing differential equations and precise boundary conditions. These equations are subsequently solved using the generalized differential quadrature element technique (GDQEM). This research not only advances our understanding of the dynamic behavior of nanotubes but also reveals the intriguing phenomena of both hardening and softening in the nonlocal parameter within cantilever nanostructures. Moreover, the findings hold promise for practical applications, including drug delivery, where the controlled vibrations of nanotubes can enhance the precision and efficiency of medication transport within the human body. By exploring the multifaceted characteristics of nanotubes, this study not only contributes to the design and manufacturing of rotating nanostructures but also offers insights into their potential role in revolutionizing drug delivery systems.

• Publications of The Korean Astronomical Society
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• v.39 no.1
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• pp.1-12
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• 2024

In this study, we investigated the time signal devices of Deungnu (circa 1270) and Gungnu (1354), the water clocks produced during the Yuan Dynasty (1271-1368). These clocks influenced Heumgyeonggaknu (1438) of the Joseon Dynasty (1392-1910), exemplifying the automatic water clocks of the Yuan Dynasty. Deungnu, Gungnu, and Heumgyeonggaknu can be considered as automatic mechanical clocks capable of performances. The Jega-Yeoksang-Jip (Collection of Calendrical and Astronomical Theories of Various Chinese Masters) contains records of Deungnu extracted from the History of the Yuan Dynasty. We interpreted these records and analyzed reproduction models and technical data previously produced in China. The time signal device of Deungnu featured a four-story structure, with the top floor displaying the four divine constellations, the third floor showcasing models of these divinities, the second floor holding 12-h jacks and a 100-Mark ring, and the first floor with four musicians and a 100-Mark Time-Signal Puppet providing a variety of visual attractions. We developed a 3D model of Deungnu, proposing two possible mechanical devices to ensure that the Time-Signal Puppet simultaneously pointed to the 100-Mark graduations in the east, west, south, and north windows: one model reduced the rotation ratio of the 100-Mark ring to 1/4, whereas the other model maintained the rotation ratio using four separate 100-Mark rings. The power system of Deungnu was influenced by Suunuisangdae (the water-driven astronomical clock tower) of the Northern Song Dynasty (960-1127); this method was also applied to Heumgyeonggaknu in the Joseon Dynasty. In conclusion, these automatic water clocks of East Asia from the 13th to 15th centuries symbolized creativity and excellence, representing scientific devices that were the epitome of clock-making technology in their times.