• Korean Journal of Mathematics
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• v.14 no.1
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• pp.65-70
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• 2006

In this article, we mention some subsequent developments of the theory of cluster sets, and present a new boundary cluster set for a simply connected domain in the complex plane and its applications.

• Bulletin of the Korean Chemical Society
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• v.28 no.4
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• pp.689-690
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• 2007

• Proceedings of the Korean Nuclear Society Conference
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• 2001.05a
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• pp.290.2-290
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• 2001

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.2
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• pp.9-15
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• 2011

In this paper, we propose a method to extract the external oblique muscle of abdomen images that is often excluded by previous method due to image distortion. In the preprocessing phase of the proposed method, we emphasize the brightness contrast with Ends-in search stretching algorithm after removing noise from the initial ultrasonic images. Then we apply average binarization in vertical direction to extract candidate fascia areas. After removing other areas than fascia with morphological characteristics, the lost part in the fascia during the process is restored with such characteristic information and location information. Then the skin area is also removed with information from the arc appearing in convex filming and the candidate muscle areas are extracted by overlapping two results two way up-down search algorithm. Another noise removing process is done to determine the muscle area. In case of obtaining obscure result, after restoring the muscle area by smearing method, the thickness of the muscle is measured by min square method. The experiment verifies that the proposed method is sufficiently effective to analyze the size and shape of muscles in abdomen in ultrasonography than previously used methods.

• Journal of the Korea Concrete Institute
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• v.14 no.5
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• pp.774-781
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• 2002

Shear behaviors of eight dapped ends of four full-scale domestic single-tee slabs were evaluated. The dapped ends with 10cm topping concrete were designed based on live load requirements for the domestic parking lot of m 500kgf/㎡ and for the large market of 1,200 kgf/㎡. All specimens were designed by the ACI 318-99 design. The variations of the experiment were the shape of hanger reinforcements as followings: 1) general PCI design method(currently used in domestic), 2) 90 degree bent-up, 3) 60 degree bent-up. All experiments were conducted with 1.2 m shear span. The results obtained in this study were 1) all specimens fully complied with the shear strength requirements as specified by ACI 318-99 except for one strand bond slip specimen, 2)a specimen with the 60 degree bent up hanger reinforcing detail showed the best shear behaviors under full service and ultimate load, and 3)a specimen with the 90 degree bent up hanger reinforcing detail resulted in the worst shear behaviors.

• Journal of the Korea Society of Computer and Information
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• v.19 no.1
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• pp.119-130
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• 2014

This paper proposes GAPS, a practical genetic algorithm based pathfinding system for conveniently analyzing various networks. To this end, the GAPS is developed through integration of the intuitive graphic user interface for network modeling, the database management system for managing the data generated in modeling and exploring procedures, and a simple genetic algorithm for analyzing a wide range of networks. Especially, previous genetic algorithms are not appropriate for analyzing the networks with many dead-ends where there are few feasible paths between the given two nodes, however, GAPS is based on the genetic algorithm with the fitness function appropriate for evaluating both feasible and infeasible paths, which enables GAPS to analyze a wide range of networks while maintaining the diversity of the population. The experiment results reveal that GAPS can be used to analyze both networks with many dead-ends and networks with few dead-ends conveniently, and GAPS has several advantages over the previous genetic algorithms for pathfinding problems.

• Explosives and Blasting
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• v.24 no.1
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• pp.9-19
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• 2006

The objective of this study is to propose curve fitted equations that can facilitate calculations and improve a practical applicability when the seismic performance of buried pipelines needs to be evaluated. The curve fitted equations are derived based on the evaluation of the dynamic responses of concrete pipe with a boundary condition of fixed-free ends. To study the dynamic response of underground pipe, the numerical analysis program developed in the previous research has been used. The location of maximum strain has been determined through dynamic analyses for a boundary condition of fixed-free ends. Then $wavelength{\lambda}$ of 5-1000(m) and propagation velocity(Vs) of 100-2000(m/s) have been applied at the location of maximum strain and the unit srain curve with the changes of the $wavelength{\lambda}$ and propagation velocity(Vs) has been obtaind. Non-linear least-square regression has been used to develop highly applicable curve fitted equations and various types of exponential regression equations have been checked out. Thus curve fitted equations and necessary coefficients with best results are suggested.

• The Journal of Pediatrics of Korean Medicine
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• v.17 no.2
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• pp.149-160
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• 2003

Objective : Essential oil inhalation and He-Ne laser treatment has become increasingly available in children with nasal diseases. But the reports on the effect and prognosis have been poor. In this study, we analyzed the treatment effect, recurrence rate and the degree of recurrent symptoms. Materials/Methods: 23 children(2-10 year-old) with nasal diseases, who received essential oil inhalation with He-Ne laser treatment at least 10 times in our hospital from January 1st 2001 to December 31th 2002 were studied. Result : Ten cases are male & thirteen cases are female. The average of age was 4.91 year-old. The most frequency symptoms are nasal discharge (82.6%), nasal obstruction (78.3%), cough (47.8%), secretion sound (39.1%), sneezing (17.4%). Average numbers of treatment period, interval and treatment times are 71.79 days, 4.06 days, 18.13 times respectively. Of the 23 children, 14 children were in 'all symptom improved' at the remedial ends, and 22 children relapsed. In the degree of recurrent symptoms, 15 children were in 'more improved then before-treatment and not equal to directly remedial ends'. No case was in 'worse than before-treatment'. The final result of treatment, 6 children keep the degree of remedial ends, on the other hand 17 children are not. Conclusions : Even though, the recurrence rate was high, this combined treatment improve nasal symptoms. The final assessment is good, when the treatment-result is good, when the treatment interval is regular and when parent's are cooperative. If the symptoms continue a whole year, the result is not so good.

• Asian Oncology Nursing
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• v.5 no.2
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• pp.107-115
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• 2005

Purpose: The present study was designed to identify cancer patients' needs when chemotherapy ends. Method: In-depth interview with focus questions was applied for the study. The participants were recruited from the patients receiving cancer chemotherapy in a university hospital. They were seven cancer patients with stomach cancer and two with liver cancer at the ending period of their chemotherapy protocol. Participants were interviewed on discharge date of last treatment and when they returned for the first outpatient follow-up. The focus question was 'what are your needs at this point?' The interviews were audio-taped and transcribed before analysis. The data were analyzed for common categories, special analytic categories, and conceptual categories. Results: Thirty two common categories, ten special analytic categories, and six conceptual categories were identified as patient's needs. The six conceptual categories were comfort needs, social needs, information needs, humanism needs, environmental needs, and self-efficacy needs. Conclusion: There were characteristic specific patients' needs when chemotherapy ends. There are needs to develop and to apply nursing intervention for cancer patients.

• Journal of the Korea institute for structural maintenance and inspection
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• v.14 no.6
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• pp.220-228
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• 2010

A steel wire-integrated deck plate that welds integrated triangle truss steel wires on a galvanized steel sheet is developed to reduce construction costs of a slab or formwork such as shores and supports, and it is already widely applied in many construction fields. This study selected upper and lower steel wires, lattice steel wires, span, and cutting methods of ends as variables, and conducted an experimental test by manufacturing a total of 32 full scale test bodies. According to the result, changes in final destruction types of the test bodies and cutting methods of ends didn't affect structural performance of test bodies, and for a 3.2m-span test body, there was no big problems in using ${\Phi}4.5$ of lattice steel wires.