• 한국실내디자인학회논문집
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• 제14권3호
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• pp.12-19
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• 2005

In contemporary society, Labyrinth and maze are used with the same meaning. They are also used by translating various meanings. But labyrinth and maze are exactly different meaning. The purpose of this study is to inquire about difference for understanding essential meaning between labyrinth and maze. First of all, this study is to grasp composition principles and the characteristics of space through example of labyrinth and maze from ancient to contemporary, prescribe about essential meaning between labyrinth and maze and examine contemporary architecture which is fit for essential meaning. As compositional Principle in labyrinth and maze applied to comtemporary architecture, the labyrinth are centrality, property of one-sideness, determinable space, on the contrary the maze are out of centrality, property of multi-sideness, indeterminable space. Finally, The aim of this paper is analyze exhibition space that suit to the characteristics of composition principle and find the characteristics in labyrinth and maze. Examples of exhibition space are Aldo Van Eyck's 'Sculpture Pavilion', Kazuyo Sejima's '21st Century Museum of Contemporary Art', Ben van berkel's'Museum Het Valkhof'. These research we studied the visitor's circulation and the architectural structure in exhibition space with the spatial characteristics and the compositional principle in labyrinth and maze.

• Journal of Chest Surgery
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• 제33권11호
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• pp.876-880
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• 2000

배경: Maze수술은 승모판 질환에 동반되는 심방세동의 효과적인 치료방법으로 알려져있다. 이 연구는 승모판 수술과 심방세동 수술을 동시에 시행한 환자에서 심방세동 수술 후 중기적인 결과와 그 재발 여부를 조사하였다. 대상 및 방법: 심방세동 수술과 승모판 수술을 받은 11예의 환자(10예는 류마티스성 승모판 질환)를 대상으로 하였다. Maze II 수술 및 그 변형수술을 6예에서 시행했고, Maze III 수술 및 그 변형수술을 5예에서 시행하였다. 심방세동 수술 후 좌심방의 수축정도를 심방세동 수술 없이 승모판 수술만으로 동율동을 얻은 경우와 비교하였다. 결과: Maze II 수술을 받은 환자 6예 중 5예(83.3%)에서, maze III 수술을 받은 환자 5예 모두에서 동율동을 회복하였다(전체적으로 90.9%). 전자의 1예(20%)와 후자의 2예(40%)에서 수술 후 각각 23, 2, 13개월만에 심방세동이 재발하였다. 그 후 다시 2예는 동율동으로 전환되었으나, 1예는 재발된 심방세동을 그대로 유지하고 있다. 변형술을 받은 3예에서는 심방세동의 재발이 없었다. Maze 수술 후 4예(40%)에서만 좌심방의 수축기능을 보였으며, maze 수술 후 좌심방 수축 정도(승모판의 A파의 속도)도 maze 수술 없이 승모판 수술과 항부정맥제 투여로 동율동을 회복한 경우보다 낮았다. 결론: 심방세동을 동반한 승모판 수술 환자에서 maze 수술로써 심방세동으로부터 동율동을 회복할 수 있으나 중기적으로 재발할 수 있으며, maze 수술 후 좌심방 수축정도는 상당히 떨어질 수 있다고 생각된다.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 추계학술대회
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• pp.165-167
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• 2011

Autonomous robots are intelligent machines that are capable of performing task in the world themselves with little or no human intervention. One of the main reason autonomous robots gained popularity in human's world is their ability to perform task with high degree of precision, accuracy and also consistency. One of the most studied fields in autonomous robot is the ability of decision making in robots. To tackle the ability of robots to make decision, this paper proposed an Autonomous Maze Solving Robot that is able to solve a maze using the optimum solution. The maze and the design of the robot are in compliance with IEEE Micromouse competition rules and regulation. Micromouse is an autonomous maze solving robot that shall be able to explore a maze on its own from a predefined starting location and find the optimum path to reach the predefined goal in the maze without human's intervention.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 추계학술대회
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• pp.188-191
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• 2011

Path finding and path planning is crucial in today's world where time is an extremely valuable element. It is easy to plan the optimum path to a destination if provided a map but the same cannot be said for an unknown and unexplored environment. It will surely be exhaustive to search and explore for paths to reach the destination, not to mention planning for the optimum path. This is very much similar to finding for an exit of a maze. A very popular competition designed to tackle the maze solving ability of autonomous called Micromouse will be used as a guideline for us to design our maze. There are numerous ways one can think of to solve a maze such as Dijkstra's algorithm, flood fill algorithm, modified flood fill algorithm, partition-central algorithm [1], and potential maze solving algorithm [2]. We will analyze these algorithms from various aspects such as maze solving ability, computational complexity, and also feasibility to be implemented.

• Journal of Chest Surgery
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• 제31권12호
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• pp.1230-1233
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• 1998

The Cox-Maze procedure was developed as a cure for atrial fibrillation. The recovery rate of both atrial contractility is reported low in the atrial fibrillation associated with mitral valvular heart disease than that of loan atrial fibrillation. We performed the Cox-Maze procedure (Maze III) in three cases who suffered from non-mitral heart diseases associated with atrial fibrillation: A ruptured sinus of Valsalva aneurysm, a ventricular septal defect, and an aortic stenoinsufficiency. The Cox-Maze procedure was performed concomitantly with correction of the underlying heart disease. Conversion to sinus rhythm was achieved in all three patients, and both right and left atrial mechanical activities could be identified echocardiographically after three postoperative months.

• 동의신경정신과학회지
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• 제10권1호
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• pp.1-15
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• 1999

The effects of Sahyangsohapwon on the enhancement of learning and memory of AD model rats were studied with Morris water maze and radial arm maze. Sample group was electrolytically lesioned on nbM, and then daily treated with the medicine for two months. Control group with nbM lesion, and sham group with the sham operation were treated the vehicle for same duration. The following results were observed. In the learning trials of Morris water maze, all three groups were improved in learning capacity as trials were repeated, but the sham group showed more prominent improvement in learning compared with the control group(p<0.01). 2. In memory retention test of Morris water maze, the sham group marked more significant improvement statistically in memory retention compared with the control group(p<0.05). 3. In the learning of radial arm maze, the sham group shows better learning capacity significantly compared with the control group(p<0.05). With the experimental results above, Sahyangsohapwon can be supposed to have the improving effects on the learning and memory of AD rats induced by electronical injury of nbM.

• Journal of Radiation Protection and Research
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• 제32권1호
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• pp.15-20
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• 2007

An empirical formula fur the neutron dose equivalent at the maze entrance of medical accelerator treatment rooms was derived on the basis of a Monte Carlo simulation. The simulated neutron dose equivalents around the Varian medical accelerator by the MCNPX code were employed. Two cases of target rotational planes were considered: parallel and perpendicular to maze walls. Most of the maximum neutron dose equivalents at the doorway were found when the target rotational planes were parallel to maze walls and the beams were directed to the inner maze entrances. The neutron dose equivalents at the outer maze entrances were calculated for about 698 medical accelerator facilities which were generated from the geometry configurations of running treatment rooms, based on such gantry rotation that produces the maximum neutron dose at the doorway. The results calculated with the empirical formula in this study were compared with those calculated by the Kersey method for 7 operating facilities. It was found that the maximum disagreement between the calculation of this study and that of the Kersey method was a factor of 8.54 with the value calculated by the Kersey method exceeding that of this study. It was concluded that the kersey method estimated the neutron dose equivalent at the doorway computed by MCNPX more conservatively than this study technique.

• Food Science and Biotechnology
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• 제14권6호
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• pp.788-792
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• 2005

The effect of docosahexaenoic acid (DHA) on maze-learning ability in aged mice was investigated. Aged mice fed a diet deficient in n-3 fatty acid received a semi-purified diet of 0.5, 1 and 2% DHA-ethyl ester (DHA-EE) for 4 months. Maze-learning ability was assessed at 3 months after the start of the experiment. The time required to reach the maze exit and the number of times that a mouse strayed into blind alleys in the maze were measured in 3 trials conducted at 4-day intervals. The time was significantly less in the DHA-EE 0.5% and DHA-EE 2% groups than in the control group (p<0.05). The number of times mice strayed into blind alleys in the maze was significantly lower in the DHA-EE 2% group than in the control group (p<0.05). Mice fed DHA showed increased DHA and decreased level of arachidonic acid (AA) in the brain. These results suggest that the intake of a 2% DHA diet improves learning ability in aged mice, which is associated with a higher DHA content in the brain.

• Journal of Chest Surgery
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• 제31권7호
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• pp.668-673
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• 1998

최근 수년간에 Maze 수술은 만성 심방세동의 가장 효과적인 치료법이 되었다. 그러나 승모판질환 등 타 심질환의 수술에 병행하여 시행할 때 대동맥 차단시간의 연장, 술후 과다출혈 가능성, 그리고 술후 제세동 결과예측의 불확실성 등, 다소의 우려가 있는 것이 사실이다. 단국대학교 흉부외과에서는 1996년 9월부터 1997년 8월까지 6례에서 Cox-maze III 수술을 시행하여 양호한 결과를 얻었기에 초기 성적을 보고한다. 남녀 각각 3명으로 환자의 연령은 평균 49.6세이었다. 심방세동을 동반한 심질환은 승모판협착 또는 협착 및 폐쇄부전의 승모판질환 4례, 승모판과 대동맥판의 협착 및 폐쇄부전 1례, 관상동맥 협착 1례로서, 수술은 Cox-maze III 술식과 동시에 개방성 승모판교련절개술 3례, 승모판대치술 1례, 대동맥판 및 승모판대치술 1례, 그리고 관상동맥우회술 1례를 시행하였다. 대동맥 차단시간은 122~233분(평균 182.4), 체외순환시간은 202~346분(평균 273.8)으로 비교적 길었으나 술후 심장회복은 순조로우며 술후 출혈로인한 재개흉예는 없었다. 술후 전 예에서 수술직후 또는 술후 2~20일 사이에 동율동으로 전환되었으며 그 기간사이에 일시적인 상심실성 부정맥이 나타나기도 하였으나 약제에 잘 치료되었다. 추적검사상 모든 예가 동율동의 심전도 소견을 보였으며 심초음파검사상 우심방의 수축은 전 예에서, 좌심방의 수축은 가장 최근에 수술한 1례를 제외하고는 모든 예에서 확인되었다. 이상의 경험으로 Cox-maze III 술식은 큰 추가 수술위험성없이 시행될 수 있었으며 만성 심방세동의 제세동에 효과적이었다.

• Journal of Ginseng Research
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• 제18권1호
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• pp.39-43
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• 1994

This study was performed to investigate the effect of ginseng saponin from Korean red ginseng on the learning and memory. Total (50, 100 mg/kg, bw) and panaxadiol saponin (15, 30 mg/kg, bw) treated groups did not show the difference of the time score and the number of error in comparison with control group. Panaxatriol saponin (15, 30 mg/kg, bw) significantly decreased both the time score and the number of error in water maze test. These results indicate that panaxatriol saponin from Korean red ginseng may improve the learning ability of rat in water multiple T-maze.