• Journal of Chest Surgery
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• v.28 no.11
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• pp.1063-1066
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• 1995

Though leiomyoma is the most common benign esophageal tumor, it is rare in the upper third of esophagus. Recently, we experienced two cases of esophageal leiomyoma in the upper third of esophagus. The patient were a 53 year old female and a 40 year old male. On esophagoscopy, masses were found at 20\ulcorner23 cm, 22\ulcorner26 cm from upper incisor with normal overlying mucosa. Enucleation was done through a right posterolateral thoracotomy without complications.

• Bulletin of the Korean Mathematical Society
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• v.46 no.2
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• pp.281-287
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• 2009

In this paper, we develop the idea of a generalized upper set in a BE-algebra. Furthermore, these sets are considered in the context of transitive and self distributive BE-algebras and their ideals, providing characterizations of one type, the generalized upper sets, in terms of the other type, ideals.

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.53 no.4
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• pp.207-211
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• 2004

We consider a class of uncertain nonlinear systems containing the uncertainties without a priori information except that they are bounded. For such systems, we assume that the upper bound of the uncertainties is represented as a Fredholm integral equation of the first kind and we propose an adaptation law that is capable of estimating the upper bound. Using this adaptive upper bound, a continuous robust control which renders uncertain nonlinear systems uniformly ultimately bounded is designed.

• Journal of the Korean Operations Research and Management Science Society
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• v.8 no.1
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• pp.19-26
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• 1983

This paper deals with the problem of locating facilities with upper and lower capacity bounds in a single level physical distribution system at minimum total costs. Several known schemes for location problems with upper capacity bounds only are successfully extended to our case and then implemented into our branch ana bound solution procedure. Computational experiments with twelve test problems suggest the effectiveness of our approach by showing that only a small amount of additional computation is required for our problem as compared to that for the problems with upper capacity bounds.

• Journal of Oral Medicine and Pain
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• v.6 no.1
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• pp.5-8
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• 1981

The author had sellected stone models of upper premolar teeth from 20 age to 60 ages in male, and studied the attrition pattern of upper premolar teeth having attention to teeth cups on the stone model. All of the attrition patterns were divided (into) 14 forms. The results were as follows : 1. Attrition patterns of upper premolar teeth were divided into 14 forms. 2. Being compared with age group, early attrition pattern (M) showed decreasing tendency and late attrition pattern (A) showed incresing tendency by aging.

• Journal of applied mathematics & informatics
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• v.5 no.2
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• pp.403-426
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• 1998

We present an algorithm to find an approximation for the stationary distribution for the general ergodic spatially-inhomogeneous block-partitioned upper Hessenberg form. Our approximation makes use of an associated upper block-Hessenberg matrix which is spa-tially homogeneous except for a finite number of blocks. We treat the MAP/G/1 retrial queue and the retrial queue with two types of customer as specific instances and give some numerical examples. The numerical results suggest that our method is superior to the ordinary finite-truncation method.

• East Asian mathematical journal
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• v.23 no.1
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• pp.9-22
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• 2007

New classes of multifunctions called fuzzy upper and fuzzy lower semi-irresolute (semi-continuous) multifunctions in fuzzy topological spaces are introduced in this paper. We also obtain some characterizations of this class and some basic interesting properties of such fuzzy multifunctions. We discuss mutual relationship and also relationship with other existing such multifunctions.

• Journal of Veterinary Clinics
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• v.5 no.2
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• pp.101-106
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• 1988

A partial obstruction of small intestine was diagnosed by physical and radiographic examination in a dog which had signs of anorexia, vomiting, diarrhea and dehydration The dog was treated by surgical method. String-like foreign body was located from stomach to upper jejunum. Diffuse laceration, inflammation and perforation caused by foreign body were observed in intestine. Intestinal resection was carried out to remove the foreign body from upper duodenum to upper jejunum. The dog was convalesced successfully after operation.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.11C
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• pp.880-882
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• 2008

This paper presents LDPC codes' upper bounds over the waterfall SNR region. The previous researches have focused on the average bound or ensemble bound over the whole SNR region and showed the performance differences for the fixed block size. In this paper, the particular LDPC codes' upper bounds for various block sizes are calculated over the waterfall SNR region and are compared with BP decoding performance. For different block sizes the performance degradation of BP decoding is shown.

• Proceedings of the Korean Geotechical Society Conference
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• 2008.10a
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• pp.1038-1049
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• 2008

The purpose of this case study is corrosive fall in Upper-Slope. Upper-slope of this slope affect in fall of the cut-slope because of wide valley. Deposit which is piled up naturally is the sinkage occurs gradually in upper-slope.