• The Korean Journal of Quaternary Research
• /
• v.7 no.1
• /
• pp.93-101
• /
• 1993

A sedimentation study of the Cheonripo intertidal beach sands and its related coastal dune sands, Cheonripo, Seosan Gun, Choongcheong Namdo, Korea has been carried out based on a series of several summer time field surveys. Each subenvironment in the Cheonripo coastal zone, that is, intertidal sand beach and coastal sand dune, could be differenciated in terms of textural parameters. The coastal dune sands are finer than the intertidal beach sands in mean grain size, and the sorting of dune sands is relatively poorer than that of intertidal beach sands. However, the skewness of intertidal beach and dune sands is commonly positive. Such textural parameters are characteristically differentiated on scatter diagrams. A series of megaripple bedform observations for 6 tidal cycle periods(August 13, 14 and 15, 1990) are interpreted to find out migration pattern of bedforms and its related sand migration. Such migration natures are shown on the tables and figures.

• Fire Science and Engineering
• /
• v.15 no.2
• /
• pp.20-30
• /
• 2001

The science and technology of seismic hazard mitigation are increasingly being shared among scientists and policy makers around the world. Administrative expertise is also being shared. While there is still tremendous unevenness in technical and administrative capacities and resources, a global community of emergency managers is developing and there is a globalization of expertise. Hazards are better understood, tools for risk assessment are improving, techniques for hazard mitigation are being perfected, and communities and states are implementing more comprehensive disaster preparedness, response, and recovery programs. Priorities are also emerging and hazard mitigation has emerged as the priority of choice in North America and Europe. An increasingly important component of hazard mitigation is resilience, in terms of increased capacities for disaster mitigation and recovery at the community and even individual levels. Each year, more is known about the locations and natures of seismic hazards, although there are still unknown and poorly understood fault lines and limited understanding of related disasters such as tsunamis and landslides. More is known about the impact of earthquakes on the built environment, although nature still provides surprises to confound man's best extorts to reduce risk. More is known about human nature and how people respond to uncertain risk and when confronted by certain catastrophe. However, despite the increased understanding of seismic phenomena and how to protect people and property, there is much that needs to be done to reduce the risk, particularly in major metropolitan areas.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.12 no.5
• /
• pp.12-18
• /
• 2004

Transient natures of diesel sprays are often characterized with spray visualization, since it is a non-intrusive and straightforward technique to be applied. However, as injection pressure is increased higher than a thousand bar in a modern direct injection diesel engine, very fine temporal and spatial resolutions in the spray visualization are required while sprays become optically denser. Discussed in this paper are macroscopic and microscopic spray visualization techniques and an example of image processing process for efficient and consistent measurement of spray parameters. The injection rate measurement method based on hydraulic pulse principle was suggested as a way of estimating injection velocity for transient diesel sprays. The spray visualization and injection rate measurement techniques were applied to analyze transient diesel sprays from a common-rail injection system and found to be practically effective.

• The Journal of the Acoustical Society of Korea
• /
• v.24 no.3E
• /
• pp.87-89
• /
• 2005

The acoustical sources of intake and exhaust systems in fluid machines are often characterized by the source impedance and strength using linear frequency-domain modeling. In the case of the sources which are nonlinear and time-variant, however, the source parameters were sometimes incorrectly obtained. In this paper, the source model and direct measurement technique are modified in order to evaluate the effect due to nonlinear and periodically time-varying source character as well as the linear property of the reflectivity of in-duct fluid machine source. With a priori known kinematical information of the source, the types of nonlinear time-variant terms can be presumed by a simple physical model, in which there is practically no restriction on the form of the model. The concept of source impedance can be extendable by introducing the linear frequency response function for each nonlinear or time-variant input. Extending the conventional method and adapting the reverse MISO technique, it is possible to develop a direct method that can deal with the nonlinear time-variant source parameters. The proposed direct method has a novel feature that there is no restriction on the probability or spectral natures of the excited sound pressure data. The present method is verified by the simulated measurements for simplified fluid machines. It is thought that the proposed method would be useful in predicting the insertion loss or the radiated sound level from intake or exhaust systems.

• Journal of Information Management
• /
• v.30 no.2
• /
• pp.20-30
• /
• 1999

Technology information as an economic good has several properties that would seem to cause difficulties for market transactions. There are several institutions used to over-come problems caused by the peculiar natures of information. The supply of information has exploded, thus bringing about the overload of information. We should be able to choose useful information. Production of technology information has externalities of public goods. Financial support is essential to the national service of technology information. The project should consider the properties of technology information and its market.

• Child Health Nursing Research
• /
• v.13 no.4
• /
• pp.495-505
• /
• 2007

Purpose: The purpose of this paper was to develop a CD program of applied logotherapy to improve the quality of life of adolescents with terminal cancer. Method: Keller's ARCS theory and a model for developing internet learning materials(Kang) was applied to develop this program comprised four distinct phases: planning, designing, development, and execution stages. Results: This program was entitled 'Finding treasures in my life' and consisted of 5 sessions and its educational contents were made up as follows: "Treasure One" is 'learning three natures of the human mind', "Treasure Two" is 'learning creative value as first method to find meaning of life', "Treasure Three" is 'learning experiential value as second method to find meaning of life', "Treasure Four" is 'learning attitudinal value as third method to find meaning of life', and "Treasure Five" is 'Becoming the master of my life'. The sub-menu was made up of 'Beginning', 'What is it?', 'Travelling'. 'Laughing Song', 'End'. Conclusions: This CD program applied logotherapy with flash animation technique as an emotional and spiritual nursing intervention program for easier and more scientific application in pediatric oncology and hospice area.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.4 no.1
• /
• pp.35-44
• /
• 1975

This experiment was purposed to examine the natures of lipids in Platycodon glaucum root, one of the well-known vegetable food stuffs in Korea. The results on the lipids obtained as forms of esters of glycerol or sterol and their derivatives by the methods of T. L. C and G. C are summarized as follows. 1. The nature of lipids was shown as a yellow- brownish color, a little viscosity and the characteristic odor of Platycodon glaucum. 2. In case of the neutral lipid part, it was composed with the ratio of T. G 77.3%, D. G 4.9%, M. G 4.0%, S. E 8.7%, F. F. A 2.5%, and S 2.4%. 3. Considering the composition of fatty acids in T. G, the amount of saturated fatty acids was about 52.0%, and that of unsaturated about 14.0%. And the principal fatty acid of T. G remained primarily as palmitic and stearic acid.

• Korean Journal of Oriental Medicine
• /
• v.7 no.1
• /
• pp.1-16
• /
• 2001

The Objective of this article is to make a bibliographical introduction and to discuss the historical value of several literatures on the Sasang constitutional medicine established by Jema Lee$(1837{\sim}1900)$. Literatures are as follows: 1. ${\ulcorner}$HamsanSachon Donguisusebowon(咸山沙忖 東醫壽世保元 甲午舊本)${\lrcorner}$; newly found draft of ${\ulcorner}$Donguisusebowon${\lrcorner}$ that contains an old edition written in 1894. 2. ${\ulcorner}$Bojeyeonseol-Supplement of Donguisusebowon(普濟演設-東醫壽世保元補編)${\lrcorner}$; a clinical book which is regarded as to had been published before the first edition of ${\ulcorner}$Donguisusebowon${\lrcorner}$ was printed. 3. ${\ulcorner}$Gyukchigo appendix(格致藁-附錄)${\lrcorner}$, ${\ulcorner}$Sasang Medicine-A Memorandom of the first edition(四象醫學草本卷備忘錄)${\lrcorner}$; which were aquired in Yanbian(China) several years ago. 4. ${\ulcorner}$Donguisusebowon${\lrcorner}$- The first edition published in 1901; owned by Mikki Sakae(三木榮) a Japanese medical historian. 5. ${\ulcorner}$Donguisusebowon${\lrcorner}$ - Manuscript; poetry on natures of herbal drugs are appended.

• Korean Institute of Interior Design Journal
• /
• no.30
• /
• pp.68-77
• /
• 2002

From ancient to modern architecture, the light in the architecture spaces as the only changing factor, was the most important theme contributing vitality to the space and judging its character and expression. The efforts, to acquire both natural-physical light and internally experienced spiritual-supernatural light, had been revealed in several ways of the architecture from the ancient architecture. It was the main issues on the christian architecture. In this study, 1 have intended to determine how the light, the most important factor on the christian architecture symbolizing the blessing of God and forming the pious and restrained spaces has been expressed in the church spaces. For this purpose, I have compared and analysised the examples of the using the light, to the arts of the modern maestros of architecture and newly constructed churches in Korea on the way of light input pattern by the shape of windows. The results from the examples show that the most outstanding point of the modern christian architecture compare to the past, is that the natures of the inputted light has many diversities by the architects. And I reached the fact that the constructers by their own will to acquire the intended light, they are chose progressive light expressing methods through the shape of windows.

• Journal of the Ergonomics Society of Korea
• /
• v.31 no.4
• /
• pp.475-481
• /
• 2012

Objective: The aim of this study is to make the taxonomy for classifying diverse touchless gestures and establish the design requirements that should be considered in determining suitable gestures during gesture-based interaction design. Background: Recently, the applicability of touchless gestures is more and more increasing as relevant technologies are being advanced. However, before touchless gestures are widely applied to various devices or systems, the understanding on human gestures' natures and their standardization should be prerequisite. Method: In this study, diverse gesture types in various literatures were collected and, based on those, a new taxonomy for classifying touchless gestures was proposed. And many gesture-based interaction design cases and studies were analyzed. Results: The proposed taxonomy consisted of two dimensions: shape (deictic, manipulative, semantic, or descriptive) and motion(static or dynamic). The case analysis based on the taxonomy showed that manipulative and dynamic gestures were widely applied. Conclusion: Four core requirements for valuable touchless gestures were intuitiveness, learnability, convenience and discriminability. Application: The gesture taxonomy can be applied to produce alternatives of applicable touchless gestures, and four design requirements can be used as the criteria for evaluating the alternatives.