• Proceedings of the Korea Concrete Institute Conference
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• 2005.05a
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• pp.219-222
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• 2005

Many RC building structures of multiple uses constructed in Korea have the irregularities of torsion and soft story at bottom stories. A typical irregular building was selected as prototype and shaking table tests were performed to investigate the seismic performance of this building. The objective of this study is to evaluate the correlation between the experimental and analytical responses of this irregular building structure subjected to the earthquake excitation by using OpenSees(Open System for Earthquake Engineering Simulation). The results of analyses simulate well the behavior of the building having torsional irregularity and weak stories.

• Proceedings of the KSR Conference
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• 2005.11a
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• pp.370-375
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• 2005

Floating sleepers in a ballasted track increase both track deterioration and track irregularities. Consequently, a considerable maintenance work is required and maintenance cycle is shortened due to the floating sleepers. This paper quantifies the degrees of void between the floating sleepers and a ballast bed. In the future, the influence of floating sleepers on the track will be investigated by an analytical method using a dynamic model.

• Journal of Korean Institute of Industrial Engineers
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• v.21 no.4
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• pp.571-580
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• 1995

Medial axis transformation is an important concept used in many engineering applications. We propose a new approach to medial axis transformation of 2D objects with smooth boundary. Our approach differs from the traditional ones: we construct the medial axis starting from the inside points, while the previous algorithms started from the boundary points. As a result, previous algorithms are highly sensitive to the small irregularities of the object's boundary curve, while our approach is robust.

• Proceedings of the Earthquake Engineering Society of Korea Conference
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• 2003.09a
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• pp.125-132
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• 2003

This paper clarifies the problems which structural engineers would have when the high-rise reinforced concrete building structures with vertical and plan irregularities are to be designed against earthquakes. The most important problems appear to be as follows: (1) ambiguity in defining the principal direction of the structure and the dynamic base shear, (2) the methodology how to account for the accidental eccentricity when the modal analysis should be conducted as required for the torsionally irregular structures, and (3) the choice of 100/30 and SRSS methods to take into account the effect of the critical direction of earthquake.

• Journal of the Korean Magnetics Society
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• v.5 no.5
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• pp.343-350
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• 1995

An overview will be given on recent Mossbauer and magnetization investigation of the applied field dependence of the magnetic properties of typical systems without strong magnetic anisotropy and showing the absence of magnetic saturation in high fields (including iron-rich spin glass (amorphous $Fe_{93}Zr_{7}$, soft ferromagnets (amorphous $Fe_{88}Zr_{12}$, $Fe_{70}Ni_{20}Zr_{10}$ and $Fe_{88}B_{12}$) and pure Fe). The results emphasize that shape anisotropy due to surface irregularities causes misalignment between the magnetization and the applied field in the otherwise collinear magnetic structure.

• Earthquakes and Structures
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• v.11 no.3
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• pp.483-503
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• 2016

This study aims to evaluate seismic performance of existing low and mid-rise reinforced concrete buildings by comparing their displacement capacities and displacement demands under selected ground motions experienced in Turkey as well as demand spectrum provided in 2007 Turkish Earthquake Code for design earthquake with 10% probability of exceedance in 50 years for soil class Z3. It should be noted that typical residential buildings are designed according to demand spectrum of 10% probability of exceedance in 50 years. Three RC building sets as 2-, 4- and 7-story, are selected to represent reference low-and mid-rise buildings located in the high seismicity region of Turkey. The selected buildings are typical beam-column RC frame buildings with no shear walls. The outcomes of detailed field and archive investigation including approximately 500 real residential RC buildings established building models to reflect existing building stock. Total of 72 3-D building models are constructed from the reference buildings to include the effects of some properties such as structural irregularities, concrete strength, seismic codes, structural deficiencies, transverse reinforcement detailing, and number of story on seismic performance of low and mid-rise RC buildings. Capacity curves of building sets are obtained by nonlinear static analyses conducted in two principal directions, resulting in 144 models. The inelastic dynamic characteristics are represented by "equivalent" Single-Degree-of- Freedom (ESDOF) systems using obtained capacity curves of buildings. Nonlinear time history analysis is used to estimate displacement demands of representative building models idealized with (ESDOF) systems subjected to the selected ground motion records from past earthquakes in Turkey. The results show that the significant number of pre-modern code 4- and 7-story buildings exceeds LS performance level while the modern code 4- and 7-story buildings have better performances. The findings obviously indicate the existence of destructive earthquakes especially for 4- and 7-story buildings. Significant improvements in the performance of the buildings per modern code are also obvious in the study. Almost one third of pre-modern code buildings is exceeding LS level during records in the past earthquakes. This observation also supports the building damages experienced in the past earthquake events in Turkey.

• Journal of the Earthquake Engineering Society of Korea
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• v.7 no.6
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• pp.81-91
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• 2003

Recently, many high-rise reinforced concrete(RC) bearing-wall structures of multiple uses have been constructed, which have the irregularities of weak(or soft) story and torsion at the lower stories simultaneously. The study stated herein was performed to investigate seismic performance of such a high-rise RC structure through a series of shaking table tests of a 1: 12 model. Based on the observations of the test results, the conclusions are drawn as follows: 1) Accidental torsion due to the uncertainty on the properties of structure can be reasonably predicted by using the dynamic analysis than by using lateral force procedure. 2) The mode coupled by translation and torsion induced the overturning moments not only in the direction of excitations but also in the perpendicular direction: The axial forces in columns due to this transverse overturning moment cannot be adequately predicted using the existing mode analysis technique, and 3) the hysteretic curve and the strength diagram between base shear and torque(BST) clearly reveal the predominant mode of vibrations and the failure mode.

• CELLMED
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• v.6 no.1
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• pp.4.1-4.7
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• 2016

Dysmenorrhoea is the most important under diagnosed and undertreated gynaecologic disorder of all menstrual complaints. It affects 50% women of childbearing age and has a major impact on health and societal costs worldwideespecially in developing countries. Therefore, a literary exploration of traditional sources for aetiopathogenesis and clinical features of usr-i-tamth (dysmenorrhoea) were reviewed to correlate with contemporary knowledge.The traditional Unani sources viz., Al Hawi fi'l Tibb (Continens Liber),Tarjuma Kamil al-Sana'a al-Tibbiyya, Al-Qanun fi'l Tibb (Canon of Medicine), Dhakhira Khawarizam Shahi, Tibb-i-Akbar, Iksir-i-A'zam, Kitab al-Kulliyyat, and Kulliyyat-i-Qanun were reviewed. Further, recent studies in the contemporary era were also browsed on the website. The causes of usre-i-tamth as per classical sources are distemperament, uterine diseases (atresia, inflammation, amenorrhoea, cancer, prolapse, ulcer, tenuous morbid matter, and cervical obstruction), psychological disturbances, environmental factors, menstrual irregularities, obesity and young age. Recent studies also prove that obesity, psychological disturbance, menstrual irregularities, environmental factors, uterine diseases and young age lead to dysmenorrhea.Unani classical sources are very much enriched with the informative knowledge related to menstruation and uterine pain/dysmenorrhoea and recent studies in contemporary proves the same. Hence, implementation of the traditional system of medicines in present-day era may play a vital role to restore health in a holistic way.

• Journal of Physiology & Pathology in Korean Medicine
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• v.21 no.2
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• pp.539-542
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• 2007

After analyzing the cases of treating female patients troubled with morbid leukorrhea, the writer drew the conclusions as follows. The shapes of patients with morbid leukorrhea show a large number of shapes of Gi type, Sin type or being inclined to be vigorous Gi, to have depressive syndrome due to disorder of Gi, to be Fire's nature flared upward, to become retention of phlegm and fluid, to become retention of Gi or to become retention of heat, or San syndromes. Accompanied syndromes of morbid leukorrhea appear over the body of upper, middle or lowe portion. In lower cho, the symptoms are menopathy, menstrual irregularities, menstrual irregularities, oligomenorrhea, itching of external genitals, San syndromes, infertility, lumbago which are connected with uterus. And in the middle cho, those are indigestion, nausea, distress in the stomach, vomiting, swallowing acid connected with digestive organs. And also in the upper cho, globus hystericus, chest distress, headache, dizziness, neck stiffness, heat in the upper, pimples connected with upper cho are appeared. Among the prescriptions of treatment for morbid leukorrhea, Ijintang was applied with the widest range of all. Besides that there were mainly prescribed for symptoms such as Gamisachil-tang, Haenggihyangso-san, Gamigwibi-tang, hyangsapyeongwi-san, Onkyung-tang, Banchong-san, Yongdamsagan-tang, Sogampaedok-san, Ojeok-etc.

• The Korean Journal of Cytopathology
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• v.18 no.1
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• pp.36-45
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• 2007

Objective : To identify key cytologic features for diagnosis of adenocarcinoma and morphologic differentiation from reactive/reparative respiratory epithelium. Study Design : The cytomorphologic features of 145 pulmonary cytology specimens (sputum and bronchial washing), which included 117 histologically proven adenocarcinomas and 28 non-neoplastic lesions, cytologically diagnosed as atypia and suspicious for malignancy (adenocarcinoma) were reviewed retrospectively. We analyzed 11 morphologic criteria in pulmonary cytologic specimens. Results: Over 110 of 117 cases of adenocarcinomas revealed nuclear membrane irregularities, non-cohesive cells, single atypical cells, moderate to markedly enlarged nuclei and an increased nuclear/cytoplasmic (N/C) ratio. Chromatin clearing, chromatin heterogeneity and hyperchromasia were seen in 102, 99 and 97 cases, respectively. All 28 cases involving non-neoplastic lesions revealed hyperplastic reactive pneumocytes, hyperplastic reactive bronchial epithelium, or degenerating macrophages. The non-neoplastic lesions revealed a small number of atypical cell clusters and paucity or absence of atypical single cells. Conclusion : The most important morphologic features for diagnosis of adenocarcinoma are nuclear membrane irregularities, non-cohesive cells, single atypical cell, moderate to markedly enlarged nuclei and increased N/C ratio. Chromatin clearing, chromatin heterogeneity and hyperchromasia were also helpful features, while pleomorphism and prominent nucleoli were less valuable.