• Transactions of the Korean Society of Mechanical Engineers
• /
• v.14 no.3
• /
• pp.646-655
• /
• 1990

A practically useful system for elastic-plastic fracture mechanics analysis has been developed. The developed system is comprised of the deformation plasticity failure assessment diagram(DPFAD) approach and the J-integral/Tearing modulus(J/T) approach. The system contains analysis routines for five types of fracture specimens : compact tension, center cracked tension, single edge craked plate in uniform tension, single edge cracked plate in three point bending and double edge cracked plate in tension. A double interpolation scheme was adopted to interpolate J values from the EPRI developed EPFM handbook and the Newton-Raphson method was used to obtain proper loadings for displacement control conditions. A graphic output system was utilized to present numerical results. Several case studies were performed to evaluate the accuracy and the usefulness of the code. It was found that the J/T approach and the DPFAD approach yielded similar results. However, the DPFAD approach is more convenient for qick assessment of integrity of cracked structures while the J/T approach is more useful in evaluating the full history of the fracture process.

• Structural Engineering and Mechanics
• /
• v.45 no.6
• /
• pp.741-758
• /
• 2013

In this study, inelastic displacement ratios are investigated for existing systems with known lateral strength considering soil structure interaction. For this purpose, SDOF systems for period range of 0.1-3.0 s with different hysteretic behaviors are considered for a number of 18 earthquake motions recorded on soft soil. The effect of stiffness degradation on inelastic displacement ratios is investigated. The Modified Clough model is used to represent structures that exhibit significant stiffness degradation when subjected to reverse cyclic loading and the elastoplastic model is used to represent non-degrading structures. Soil structure interaction analyses are conducted by means of equivalent fixed base model effective period, effective damping and effective ductility values differing from fixed-base case. For inelastic time history analyses, Newmark method for step by step time integration was adapted in an in-house computer program. A new equation is proposed for inelastic displacement ratio of system with SSI with elastoplastic or degrading behavior as a function of structural period ($\tilde{T}$), strength reduction factor (R) and period lengthening ratio ($\tilde{T}$/T). The proposed equation for $\tilde{C}_R$ which takes the soil-structure interaction into account should be useful in estimating the inelastic deformation of existing structures with known lateral strength.

• Journal of Acupuncture Research
• /
• v.21 no.2
• /
• pp.301-314
• /
• 2004

Objectives : We studied to discover the patterns of DITI of the patients having a both neck and upper extremity pain on one side without any nerve root compression sign and the history of cervical disc herniation. Method : We selected 26 patients as an experimental group, who had visited for a both neck and upper extremity pain on one side without any nerve root compression sign, at the department of acupunture and moxibustion in Conmaul oriental medical hospital, during 2001. 01. - 2003. 09. And 31 normal adults were selected as a control group, not having any neck or arm pain and any history of cervical disease. We analyzed the segmental temperature statistically with t-test. Results & Conclusion : There was a significant change of temperatures in the scapula, posterior brachium, lateral forearm and dorsal hand area. And the experimental group showed cold spot and disruption of normal thermographic shape that were usually shown on the cervical sprain.

• Journal of Oriental Medical Thermology
• /
• v.4 no.1
• /
• pp.61-69
• /
• 2005

Objectives : We studied to discover the patterns of DITI of the patients having a both neck and upper extremity pain on one side without any nerve root compression sign and the history of cervical disc herniation. Method : We selected 26 patients as an experimental group, who had visited for a both neck and upper extremity pain on one side without any nerve root compression sign, at the department of acupunture and moxibustion in Conmaul oriental medical hospital, during 2001. 01. - 2003. 09. And 31 normal adults were selected as a control group, not having any neck or arm pain and any history of cervical disease. We analyzed the segmental temperature statistically with t-test. Results & Conclusion : There was a significant change of temperatures in the scapula, posterior brachium, lateral forearm and dorsal hand area. And the experimental group showed cold spot and disruption of normal thermographic shape that were usually shown on the cervical sprain.

• Journal of architectural history
• /
• v.11 no.3 s.31
• /
• pp.7-19
• /
• 2002

Architectural Bureau(建築所, Kunchukso) that Imperial Japan set up in the Dept. of Treasury (度支部, Takjibu) executed many construction works from Oct. 1906 to Aug. 1910. In the meantime, this bureau produced many architectural records. But they were hardly preserved. Because Imperial Japan disposed the architectural records which had the historical value in according to the legal and administrative criteria. Nevertheless, it is important to inquiry precisely the architectural records considerating that the buildings that Architectural Bureau made were the products of government initiated construction and its activities influenced those of similar architectural bureaus after 1910. The results are summarized as follows : First, Architectural Bureau put through all processes from plan, design, executation to examination. Second, Architectural Bureau were producted many architectural records which cotained not only drawings but also various types of documents. Third, Architectural Bureau applied the preservation method at the first time in order to control buildings. Therefore, we can verify many informations that the drawings didn't give by analyzing the architectural records. In conclusion, we can establish the foundation that clarify the facts of buildings under the rule of Japan Imperialism and grasp the meanings if we raise the value of records and draw up the use plan by seeking new the architectural records and dividing them into the several groups on the production organizations.

• Child Health Nursing Research
• /
• v.10 no.2
• /
• pp.196-204
• /
• 2004

Purpose: This research was to determine the characteristics of dysmenorrhea among girls, identify the factors affecting dysmenorrhea. Method: The study subjects were 1653 high school student in Busan Metropolitan city. The data were collected by a self-administered questionnaire between November 1 and November 30, 2002. Descriptive statistics, t-test, one-way ANOVA with Scheffe' test, and stepwise multiple regression analysis in SPSS program were used for data analysis. Result: Students suffering from slight dysmenorrhea made up the majority 52.9％, whereas those with serious cases represented 29.8％. Regarding the measures taken to cope with dysmenorrhea, most of the respondents took analgesics 52.8％. A high points of dysmenorrhea was associated with irregular meal habits(p<0.01), unbalanced diet(p<0.05), stress(p<0.01), and health awareness(p<0.01), first menstruation before they reached 13 (p<0.01), heavy bleeding(p<0.01), family history(p<0.01). Factors affecting the dysmennorrhea of the respondents included the extent of bleeding, family history, health awareness, age during the first menstruation, and degree of stress, accounting for 13.1％ of the total variance. Conclusion: To manage dysmenorrhea among girls, the results of the research indicate that students need to have proper awareness of health and manage stress through health education. Likewise, they need to be given positive follow-up management through a holistic nursing approach.

• Korean Journal of Health Education and Promotion
• /
• v.21 no.3
• /
• pp.117-131
• /
• 2004

Purpose: This study was conducted to evaluate the health behaviors and to find out risk factors of blood pressure of adult women in a rural area. Method: The convenient sample consisted of 159 adult women who lived in G-gun. The data was collected using a self-report questionnaire for health behaviors and mercury type sphygmomanometer for BP, between Jun I and August 15, 2003. Health behaviors measured smoking, alcohol, salt, lipid, stress, exercise, coffee, BMI and medication. To accomplish the goal of study, descriptive statistics, t-test, $x^2$-test, ANOVA and multiple regression analysis were. performed with SPSS 10.0. Results: The average age of subjects was 49.2(SD7.34)years old. The average SBP and DBP of subjects were 126.22mmHg(SDl6.73) and 8 1.25mmHg(SDl 0.31). There were significant differences in smoking(p=.000), cigarette consumption(p=.001), smoking duration(p=.000), BMI(p=.033), medication (p=.001), family history(p=.000) between normotensive and hypertensive. The main risk factors on SBP were medication, age, BMI, family history and smoking duration by 35.7% of the total variance these variables explained SBP. The main risk factors on DBP were BMI, education and medication by 17.60% of the total variance these variables explained DBP. Conclusion: These results suggest that health professional have to emphasize prevention of obesity, lasting medication and no smoking for prevention and management of hypertension in community health promotion program.

• The Journal of Korean Medical History
• /
• v.14 no.2
• /
• pp.59-82
• /
• 2001

The book, "Euibangyoochui醫方類聚"(A.D. 1445) is called the treasure-house of the knowledge of medical science, due to the 50,000 prescriptions and an enormous amount of medical information that it contains. But in spite of the importance of this book, a convenient and efficient method to use the information in this book isn't developed yet and as a result the use of this book in a low state. Therefore before than anything else, there is necessity to establish the database on "Euibangyoochui". Before the establishment of database on "Euibangyoochui", there are basic works that should be preceded as follows; like the correction through investigating and comparing between the texts that are related with "Euibangyoochui", interpretation, proofread and translation to Korean of the original. And also bibliographical research on "Euibangyoochui". The compilatory course and transmissional system of the medical books in first term of Chosun(朝鮮) was able to apprehend through the bibliographical research about "Euibangyoochui". Also, many emergency medical books and books about the prevention of the infectious diseases mostly based on "Euibangyoochui" were wrote and put to practical use. And this fact, tells us that the compilation of "Euibangyoochui" was supported by the government of Chosun as means to accumulate the medical knowledge.

• Journal for History of Mathematics
• /
• v.18 no.3
• /
• pp.79-90
• /
• 2005

Before the First World War, French mathematicians were leading mathematical community in the world but after the war, there was a vacuum compared with Germany and England. So it was necessary to make everything new in France. Young mathematicians from Ecole Normale Superieur came together to form the Bourbaki group. Bourbaki advanced the view that mathematics is a science dealing with structures, and that it attains its results through a systematic application of the modern axiomatic method. French culture movements, especially structuralism and potential literature, including the Bourbakist endeavor, emerged together, each strengthening the public appeal of the others through constant interaction. In this paper, we investigate Bourbaki's role and their achievements in the twentieth century mathematics, and the decline of Bourbaki.

• Child Health Nursing Research
• /
• v.10 no.3
• /
• pp.311-320
• /
• 2004

Purpose: To investigate the relationships among mother's perception of her own newborn, her caring-confidence level, and her child-rearing attitude; and to provide data for developing effective nursing education programs on maternal newborn care. Method: Explorative survey questionnaires were completed by 159 married mothers of newborns from November 2003 to March 2004. Data were analyzed using SPSS/Win 10.0 by t-test and Pearson's Correlation coefficient. Result: The mean scores of the mother's perception of her own newborn, her caring- confidence level, and her child-rearing attitude were .26, 3.13, and 3.43 respectively. There was a positive correlation between mother's perception of her own newborn and her child-rearing attitude. There was a significant correlation between mothers caring-confidence level and her child-rearing attitude. Score of caring-confidence was significantly different depending on the availability of helper and history of delivery. Conclusion: Availability of helper and history of delivery significantly affected mothers caring-confidence. This in turn, along with mothers perception of her own newborn, enhanced mothers child-rearing attitude. Thus, an effective education for mothers should include these factors.