• Journal of International Society for Simulation Surgery
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• v.3 no.1
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• pp.12-15
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• 2016

Functional and esthetic reconstruction after segmental mandibulectomy is one of the most challenging surgeries in microsurgical reconstruction field. Simulation surgery before free flap reconstruction has been performed for efficient surgery and successful results. Fibula free flap is the flap of the choice for reconstruction of the segmental mandibular defect. Straight nature of the fibula bone requires multiple segmentations to fit into mandible. 3D rapid prototype (RP) model gives a lot of information for mandibular reconstruction. The purpose of this study was to report mandibular reconstruction with free fibular flap using simulation surgery. A total of 30 consecutive patients were included for functional and esthetic evaluation. Among 30 patients, two flaps showed necrosis after radiotherapy. The other flaps were all survived and showed successful reconstruction in both function and esthetics.

• Archives of Reconstructive Microsurgery
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• v.17 no.2
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• pp.87-93
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• 2008

Purpose: Because of good blood supply of the pedicled perforator flap and its advantage of not requiring vessel anastomosis compared to pedicled flap, it is widely used recently. The authors intended to report the results of various pedicled perforator flaps which have been performed to reconstruct the soft tissue defects and the utility of the flap. Methods: The study was conducted for 12 cases of pedicled perforator flap which were performed at the plastic surgery department of the current hospital from the period of June, 2005 to August, 2008. Four patients were male and eight patients were female and their age was ranged from 22 to 74 years old with mean age of 42.6 years old. The sites were 1 case on face, 3 cases on chest, 3 cases on back, 4 cases on coccyx, and 1 case on foot. Results: The defect sites of all patients were successfully reconstructed by using the pedicled perforator flap. Although most of the flaps revealed congestion at the early stage after the surgery, they were recuperated within few days. One case of skin flap was reported to be partially necrotized in old age woman who has no reliable perforator. Other than that, all defects were covered successfully and acceptable aethetically. Conclusion: As stated in above, the pedicled perforator flap has many useful advantages than the conventional pedicled flap and various free flap. Unless free flap must be required, the use of pedicled perforator flap is recommended by first choice for soft tissue coverage.

• Archives of Reconstructive Microsurgery
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• v.11 no.1
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• pp.29-35
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• 2002

Free flap reconstruction of the foot has become one of the standard procedures at the present time, but choice of a free flap for the soft tissue defect of the foot according to location and size remains controversial. We evaluated the results of free flap reconstruction for the soft tissue defects of the foot. Twenty seven free flaps to the foot were performed between May 1986 and December 2000 in the department of Orthopedic Surgery. Patient age ranged from 3 to 60 years. Male to female distribution was 20:7. Mean follow-up period was 30.5 months which ranged from 12 months to 60 months. The indications for a specific flap depended on the location and extension of the foot defect. In weight-bearing area and amputation stump, the authors chose the sensate (reinnervated) dorsalis pedis flaps (n=7) and sensate radial forearm flaps (n=2). In nonweight-bearing area including dorsum of the foot and area around Achilles tendon, we performed nonsensate (non-reinnervated) free flap reconstructions which included dorsalis pedis flaps (n=5), groin flap (n=1), radial forearm flaps (n=6), scapular flaps (n=4), latissimus dorsi flaps (n=2). Twenty-six flaps transferred successfully (96.3%). The sensate flaps which were performed in weight-bearing area and amputation stumps survived in all cases and recovered protective sensation. Mean two-point discrimination was 26 mm at the last follow up. As a conclusion, the selection of a proper flap depends on the location and extension of the foot defect and patient's age. Fasciocutaneous flap including radial forearm flaps and dorsalis pedis flaps were the best choice in nonweight-bearing area. The sensate free flaps which are performed in the weight-bearing area and amputation stumps can produce better outcome than nonsensate free flap.

• Journal of the Korean Operations Research and Management Science Society
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• v.35 no.4
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• pp.1-16
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• 2010

In consumption environment, the time interval is frequently found between purchase and consumption. The objective of this study is to determine how consumers' purchase intentions can be influenced by this type of temporal distance. Construal level theory holds that the 'distant future situation' tend to be construed on a higher level than the 'near future situation.' Accordingly, when considering the consumption in the near future, consumers tend to be more likely to focus on the feasibility of the alternatives than on desirability. Conversely, when considering the consumption in the distant future, they are more likely to focus on the desirability of the alternatives than on feasibility. Along with the previous literature, the current study investigates the effects of temporal distance between purchase and consumption on consumer choice. Moreover, we aim to determine under which conditions these effects pertain. To test our hypotheses, we conducted a 2(temporal distance:near future vs. distant future) x 2(alternative type:high desirability, low feasibility vs. low desirability, high feasibility) x 3(additional offering:no gift, free coffee coupon, free mini book) between subjects design. The results show that the main effects of temporal distance and additional offering are significant. The 2 way interaction between temporal distance and additional offerings is also significant. Specifically, the purchase intention differentiation from additional offering tends to be larger at shorter temporal distances (near future) than at long ones (distant future).

• Journal of the Korean Society of Food Culture
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• v.32 no.1
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• pp.1-9
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• 2017

The objective of this study was to explore the role of familiarity in cross-cultural product perception and perception changes according to food systems (hot sauce and spicy-chicken) in Korean and US consumers. Free choice profiling was conducted by Korean and US consumers on four spicy-chicken samples made using four hot sauce samples. Half of the hot sauce samples were selected to be more familiar to US consumers and vice versa to Korean consumers. A previous study that investigated cross-cultural perceptions of the same four hot sauce samples in US and Korean consumers was incorporated in this study. For distinct sample differences, US and Korean consumers perceived products similarly. However, for less obvious differences, flavor familiarity seemed to affect consumers' product perceptions. In addition, product perceptions changed more dramatically according to food systems for familiar samples in each country. The findings of this study show that consumers' product perception can be affected by flavor familiarities.

• Korean Journal of Human Ecology
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• v.21 no.5
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• pp.837-848
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• 2012

This study evaluated the types of daily routines that occurred in child care centers based on four general categorizations: time spent on indoor free choice activities, outdoor activities, group activities and special activities. In addition, resulting child care teacher behaviors were examined based on daily routine types. A total 23 classes' activity times and teacher behaviors were observed. The collected data were analyzed using descriptive statistics, hierarchical cluster, and Mann-Whitney U. Results indicated that there were 2 principle daily routine, 'indoor/outdoor activity time oriented' and 'group activity time oriented'. Analysis showed that teachers who belonged to the 'indoor/outdoor activity time oriented' type showed more positive affect, positive guidance, neural guidance, and less non-involved behavior. Results suggest the importance of time spent on free choice activities in the context of daily routine for quality childcare.

• Korean Journal of Childcare and Education
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• v.9 no.1
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• pp.241-262
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• 2013

The purpose of this study is to explore four-year old children's peer culture. During free choice play time, various activities and interaction patterns were observed and analyzed to understand the characteristics of peer culture. The results of this study showed two main peer culture patterns. First of all, peaceful peer culture in which children maintained close relationships based on mutual respect were found. Also conflictive peer culture in which children had negative relationships with other children, such as vertical, discriminative and neglected relationships were observed.

• Journal of computational fluids engineering
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• v.12 no.1
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• pp.35-42
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• 2007

This paper describes a recent development on the divergence free basis function based on a hermite stream function and verifies its validity by comparing results with those from a modified residual method known as one of stabilized finite element methods. It can be shown that a proper choice of degrees of freedom at a node with a proper arrangement of the hermite interpolation functions can yield solenoidal or divergent free interpolation functions for the velocities. The well-known cavity problem has been chosen for validity of the present algorithm. The comparisons from numerical results between the present and the modified residual showed the present method yields better results in both the velocity and the pressure within modest Reynolds numbers(Re = 1,000).

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2001.10a
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• pp.19-26
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• 2001

Previously, an improved crack analysis technique based on Element-Free Galerkin Method (EFGM) which includes a discontinuity function and a singular basis function was presented. The technique needs neither addition of nodes nor modification of the model, but it shows some dependency on the formulation and modeling parameters such as the class of weight function, the size of compact support, dilation parameter and the range controlled by the singular basis function. For those parameters, a parametric study was performed on the calculation of a discrete error and then, a guideline for the choice of adequate parameters in the technique was proposed.

• Journal of Digital Convergence
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• v.15 no.12
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• pp.137-145
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• 2017

The purpose of this study is to suggest the measures to measure the shopping satisfaction and to increase the shopping satisfaction. We conducted surveys and conducted empirical analysis on Chinese tourists visiting duty free shops in Busan using direct survey method. The results of this study are as follows. First, factor analysis for subdividing the duty - free choice attribute was analyzed as store attribute, product attribute, and service attribute. Second, based on this analysis, the effect of each attribute on shopping satisfaction showed statistically significant positive results. Third, the analysis of the relative size of the effects of analytic attributes on satisfaction showed that store attributes were the highest. That is, the quality of duty-free shops, services, and products increases overall shopping satisfaction. Therefore, it can be said that the strategy implementation that improves the quality of the attributes affecting the satisfaction is expected to contribute to the improvement of the management performance, and suggests the management implications for the activation of the operation of the duty - free shop. Future studies will be more meaningful if more variety of shopping places are studied.