• 한국측량학회지
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• 제40권3호
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• pp.227-237
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• 2022

다시기 고해상도 영상에 존재하는 건물의 위치 및 형태학적 왜곡은 건물의 변화탐지를 어렵게 만드는 요인 중 하나이다. 이를 해결하기 위하여 부가적인 3차원 지형정보 및 딥러닝을 활용한 연구가 수행되고 있지만, 실제 사례에 적용되기 어려운 한계가 있다. 본 연구에서는 건물의 효율적인 변화탐지를 수행하기 위하여, 건물의 위치 정보뿐만 아니라 건물 간 위상정보를 활용하는 방안을 제시한다. 다양한 비연직 영상에서의 건물을 학습하기 위하여 SpaceNet v2 데이터셋을 사용하여 Mask R-CNN (Region-based Convolutional Neural Network)을 학습하였으며, 건물 객체를 탐지하여 중심점을 노드로 추출하였다. 추출한 건물 노드를 중심으로 서로 다른 두 시기에 대해 각각 TIN (Triangulated Irregular Network) 그래프들을 형성하고, 두 그래프 간 구조적 차이가 발생한 영역에 기반하여 변화 건물을 추출하기 위해 그래프 유사도와 노드의 위치 차이를 반영한 변화 지수를 제안하였다. 최종적으로 변화 지숫값을 기반으로 두 그래프 간 비교를 통해 새롭게 생성되거나 삭제된 건물을 탐지하였다. 총 3쌍의 테스트 영역에 대해 제안한 기법을 적용한 결과, 건물들 간 연결성의 변화를 고려함으로써 기복 변위에 의해 서로 다른 시기간 동일 건물 쌍을 판단하기 어려운 경우에도 변화가 발생한 건물을 적절하게 탐지하는 것을 확인할 수 있었다.

• 터널과지하공간
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• 제34권3호
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• pp.218-230
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• 2024

최근 건설현장의 안전사고 문제를 해결하기 위해 컴퓨터 비전 기술을 활용한 안전관리에 관한 연구를 많이 수행하고 있다. 최근 딥러닝 기반 객체 인식 및 영역 분할 연구에서 앵커 박스 파라미터를 사용하고 있다. 일관적인 정확도를 확보하기 위하여 학습 과정에서 앵커 박스 파라미터의 최적화가 중요하다. 앵커 박스 관련 파라미터는 일반적으로 학습자의 휴리스틱 방법으로 모양과 크기를 고정하여 학습을 수행하고 있고, 파라미터는 단일로 구성된다. 하지만 파라미터는 객체 종류와 객체 크기에 따라 민감하고 수가 증가하면 단일 파라미터로 데이터의 모든 특성을 반영하는데 한계가 발생한다. 따라서 본 논문은 분할 학습을 통해 최적화된 다중 파라미터를 적용하는 방법을 제안하여 단일 파라미터로 모든 객체의 특성을 반영하기 어려운 문제를 해결하고자 한다. 통합 데이터를 객체 크기, 객체 수, 객체의 형상에 따라 효율적으로 분할하는 기준을 정립하였으며, 최종으로 통합 학습과 분할 학습 방법의 성능 비교를 통해 제안한 학습 방법의 효과를 검증하였다.

• 한국조경학회지
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• 제37권3호
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• pp.33-45
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• 2009

인력 중심의 산업적 성격이 강한 조경업은 실질적 생산 활동의 주체라고 할 수 있는 기술인력의 관리가 매우 중요하다. 그러나 조경업은 경기에 민감한 산업적 특성으로 인하여 최근과 같은 국내외 경제여건과 정책의 변화 등에 따라 매우 민감하게 반응하게 되고 이러한 특성은, 곧 조경현장의 인력수급에 많은 영향을 미치게 된다. 결과적으로 인력에 대한 올바른 수급 균형이 깨지게 되어, 산업체에서는 조경기술인력의 부족에 허덕이게 되고, 새로 사회에 진출하는 신규 인력은 마땅한 일자리를 찾지 못하는 상황으로 악순환을 계속하게 된다. 따라서 본 연구는 현 조경산업의 올바른 기술인력 수급현황을 파악하고 이를 통해 향후 요구되는 인력수요와 공급상황을 분석함으로써, 기존 기술인력과 신진 기술인력의 적절한 수급균형을 맞추고, 이를 통해 미래 조경산업의 안정화를 꾀하고자 진행되었다. 본 연구에서 도출된 결과에 따르면, 초급기술자에 해당하는 조경산업기사 이상의 기술인력은 매년 10% 수준의 인력공급 증가가 예상된다. 이를 2008년 기술인력 공급현황인 1,137명을 기준으로 추정하면 1,251명의 인력공급이 가능할 것으로 예상된다. 이에 비하여 조경업체의 수요 기술인력은 현재 조경산업에 종사하는 기술인력을 14,783명으로 추정하였을 경우, 매년 540여명 정도의 증가가 예상된다. 결과적으로 1,251명의 공급 기술인력은 현재 조경산업체에서 필요로하는 540여명의 기술인력에 비하여 약 2.3배 정도에 해당하는 수치이다. 즉 조경분야에서는 공급인력의 초과를 충분히 예상할 수 있으며, 적절한 통제를 통하여 수요에 대응할 수 있는 인력공급계획이 필요할 것으로 사료된다. 따라서 올바른 인력수급체계가 갖춰지지 못한다면, 앞으로도 기술인력에 대한 공급과 업체에서의 수요 불균형으로, 조경 인력에 대한 경쟁력이 저하될 수밖에 없을 것이다. 또한 학 경력 인정기술자 제도의 폐지로 자격증에 대한 수요가 더욱 가속화될 것으로 예상되는 시점에서 각 교육기관에서는 해당 인력에 대한 자격요건을 충분히 갖춘 후에 졸업시킬 수 있는 경쟁력 있는 인재양성 방안을 좀 더 적극적으로 강구하여야 할 것이다.

• 가정간호학회지
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• 제7권1호
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• pp.58-72
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• 2000

This study was an attempt to encourage the development of a rehabilitation delivery system and programs as a substitute service for hospitalization on the case of car accident patients, such as hospital based home health care nursing services. Various substitute services for hospitalization are required to curtail the length of stay for inpatients who were hospitalized with car accident compensation insurance. It focused on developing an estimation an early discharge day for car accident inpatients based on detailed statements of treatment for 111 inpatients who were hospitalized at the General Hospital in 1997. This study had four specific purposes as follows. First. to find out the utilization of medical services. Second, to estimate the time of early discharge and income increasing effect based on early discharge for those patients. Third, to identify the factors affecting total medical expenditure and the length of stay for those inpatients. Forth, to figure out the need of utilizing home health care nursing service for accident patients. In order to analyze the length of stay and medical expenditure for inpatients who were hospitalized due to car accidents, the authors conducted micro- and macro-analysis of medical and medical expenditure records. Micro-analysis was done by nominal group discussion of 4 expertise with the critical criteria, such as a decrease in the amount of treatment after surgery, treatments, tests, drugs and changes in the test consistency, drug methods, vital signs, start of ROM exercise, doctor's order, patient's outside visiting ability, and stable conditions. In addition to identifying variables affecting medical expenditure, and the length of stay and income effect due to early discharge day, the data was analyzed with a multiple regression analysis and linear regression analysis model by SPSS-PC for windows and Excell program. Results of this study were as follows. First. the mean length of stay was 50.3 days. whereas the mean length of stay due to early discharge was 34.3 days at the hospital. The estimation of time of early discharge depended on the length of stay. The longer the length of stay, the longer the length of time of early discharge : for instance a length of stay under 10 days was estimated as correlating to a mean length of stay of 6.6 days and early discharge of 6.5. The mean length of stay was 217.4 days and the time of early discharge was 110.1 respectively. The mean medical expenditure per day was found to be 169.085 Won and the mean medical expenditure per day showed negative linear trends according to the length of stay at the hospital. The estimation results of the income effect due to being discharged 16 days early was around 2,244,000 won per bed. However. this sum does not represent the real benefits resulting from early discharge, but rather the income increasing amount without considering medical prime cost in the general hospital. Therefore, further analysis is required on the cost containments and benefits as turn over rate per bed as the medical prime costs. The length of stay was most significant and was positive to the total medical expenditure, as expected. Surgery and patient's residential area was also an important variable in explaining medical expenditure. The level of complications was the most significant variable in explaining the length of stay. There was a high level for need a home health care nursing service which further supports early discharge for accident patients. In addition, when the patient was discharged. they needed follow up care for complications suffered during the car accident. $86.8\%$ of discharged patients responded that they needed home health services after early discharge. From these research findings, the following suggestions have been drawn. Strategies on a health care delivery system must be developed in order to focus on the consumer's needs and being planned for 21 century health policy in Korea. Community based intermediate facilities or home health care should be developed for rehabilitation services as a substitute for hospitalization in order to shorten the length of stay would be. A hospital based home health care nursing service. it would be available immediately to utilize by patients who want rehabilitation services as a substitute for hospitalization with the cooperation of car insurance companies.

• 고전문학과교육
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• 제38호
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• pp.65-101
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• 2018

<창선감의록>은 종법주의가 확립되는 흐름 속에서 차세대 가부장인 적장자에 의해 발생하는 가문의 위기를 정면에 내세워 그 문제를 해결해가는 과정을 선보였다. 본고에서는 그 문제의 발생과 해소 과정을 적장자 콤플렉스 차원에서 해명하고자 했다. 화춘의 적장자 콤플렉스는 카인 콤플렉스, 특히 카인의 장남 콤플렉스와 같은 양상을 보이는바 보편성을 지니며, 한편으로 시대적 작품적으로 적장자 콤플렉스라는 특수성을 띤다. 화춘의 적장자 콤플렉스는 화춘 개인을 넘어서 심부인의 종부 콤플렉스 그리고 조월향의 총부 콤플렉스와 결합하면서 확대 심화되어 마침내 가문 차원의 콤플렉스로 자리를 잡는 일련의 과정을 밟는다. 이에 <창선감의록>은 우리 문학사에서 적장자 콤플렉스를 노련하게 다룬 최초의 작품이라 할 수 있다. 그렇게 확대 심화된 적장자 콤플렉스는 차남 화진에게 전가되어 그가 짊어지고 해소해야 할 것이 되는데, 화진은 지극한 효제로 가문 차원에서 자리를 잡은 적장자 콤플렉스를 해소하기에 이른다. 화진의 효제는 심부인 화춘 모자에 대한 효제를 넘어서서 가문에 대한 효제로 수렴된다. 그 가문에 대한 효제라는 것이 일정 부분 종법질서에 흠결이 없는 가문에 대한 효제의 성향을 띠는바, 종법주의 실현의 요체로 작동한다. 그와 관련하여 효제는 그 자체를 위하는 무조건성과 그 자체에 복이 내재되어 있는 필연적 보상성을 띰으로써 종법주의 이념에 당위성과 필연성을 부여한다. 그리하여 화진의 효제는 공론화 과정을 거쳐 '화욱(가부장)-화춘(적장자)-화천린(입후자)'의 종법주의를 실현하는 요체로 구현된다. 그런데 종법주의가 어떤 상황을 막론하고 절대적인 것으로 구현되는 것은 아니고, 왕가의 경우에는 종법에서 벗어나는 것을 인정함으로써 다소 유연하게 구현되는 양상을 띤다. 이렇듯 적장자 콤플렉스의 해소를 통해서 종법주의가 실현되는 것으로 마무리된다. 그런데 작품 곳곳에 근원적인 죄의식과 심리적 고통이 매우 강하게 배어난다. 그런 죄의식의 고통은 적장자 콤플렉스 내지는 적장자 문제와 맞닿아 있다. 이는 종법주의가 반드시 실현해야 할 이념으로 제시될수록 그에 상응하여 언제든지 적장자 콤플렉스가 분출될 수 있음을 방증한다. 적장자 콤플렉스가 표리관계를 이루기 때문이다.

• 기록학연구
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• 제12호
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• pp.137-178
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• 2005

The anticommunist guerrillas' activities that aretheconcern of this article took place largely in North Korea or behind the enemy-held lines. Verifying their history is accordingly difficult and requires careful attention, but despite their active operations the military as well as the scholarly community have been lax in studying them. The Korean War came to be perceived as a traditional, limited war with regular battles, so that the studies addressed mostly the regular operations, and guerrilla warfare is remembered as an almost 'exclusive property' of the communist invaders; a small wonder that the anticommunist guerrillas have not been studied much and the collection of materials neglected. Therefore, in contrast with the witness accounts concerning regular battles, witness resources were of a small volume about these "patriots without the service numbers." For the above reasons the guerrilla participants and their later-organized fellowships took to the task of leaving records and compiling the histories of their units. They became active preservers of history in order to inform later generations of their works and also to secure deserved benefits from the government, in a world where none recognized their achievements. For instance, 4th Donkey Unit published witness accounts in addition to a unit history, and left video-recordings of guerrilla witnesses before any institute systematized the oral history of the guerrillas. In the case of Kyulsa ("Resolved to Die") Guerrilla Unit, the unit history was 10 times revised and expanded upon for publication, contributing substantially to the recovery of anticommunist guerrilla history which had almost totally lacked documented resources. Now because the guerrilla-related witness accounts were produced through fellowship societies and not individually, it often took the form of 'collective memory.' As a result, though thousands of former guerrillas remain surviving, the scarcity of numerous versions of, or perspectives upon, an event renders difficult an objective approach to the historical truth. Even requests to verify the service of a guerrilla member or to apply for decoration or government benefits for those killed in action, the process is taken care of not at the hands of the first party but the veteran society, so that a variety of opinions are not available for consideration. Moreover, some accounts were taken by American military personnel, and since some historians, unaware of official documents or evaluation of achievements, tended to center the records around their own units and especially to exaggerate the units' performances, they often featured factual errors. Thefollowing is the means to utilize positively the aforementioned type of witness accounts in military history research. It involves the active use of military historical detachments (MHD). As in the examples of those dispatched by the American forces during the Korean War, experts should be dispatched during, and not just after, wartimes. By considering and investigating the differences among various perspectives on the same historical event, even without extra documented resources it is possibleto arrive at theerrors or questionable points of the oral accounts, supplementing the additional accounts. Therefore any time lapses between witness accounts must be kept in consideration. Moreover when the oral accounts come from a group such as participants in the same guerrilla unit or operation, a standardized list of items ought to be put to use. Education in oral history is necessary not just for the training of experts. In America wherethefield sees much activity, it is used not only in college or graduate programs but also in elementary and lifetime educational processes. In comparison in our nation, and especially in historical disciplines, methodological insistence upon documented evidences prevails in the main, and in the fields of nationalist movement or modern history, oral accounts do not receive adequate attention. Like ancient documents and monuments, oral history also needs to be made a regular part of diverse resource materials at our academic institutes for history. Courses in memory and history, such as those in American colleges, are available possibilities.

• Asia pacific journal of information systems
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• 제17권4호
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• pp.31-59
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• 2007

We frequently use search engines to find relevant information in the Web but still end up with too much information. In order to solve this problem of information overload, ranking algorithms have been applied to various domains. As more information will be available in the future, effectively and efficiently ranking search results will become more critical. In this paper, we propose a ranking algorithm for the Semantic Web resources, specifically RDF resources. Traditionally, the importance of a particular Web page is estimated based on the number of key words found in the page, which is subject to manipulation. In contrast, link analysis methods such as Google's PageRank capitalize on the information which is inherent in the link structure of the Web graph. PageRank considers a certain page highly important if it is referred to by many other pages. The degree of the importance also increases if the importance of the referring pages is high. Kleinberg's algorithm is another link-structure based ranking algorithm for Web pages. Unlike PageRank, Kleinberg's algorithm utilizes two kinds of scores: the authority score and the hub score. If a page has a high authority score, it is an authority on a given topic and many pages refer to it. A page with a high hub score links to many authoritative pages. As mentioned above, the link-structure based ranking method has been playing an essential role in World Wide Web(WWW), and nowadays, many people recognize the effectiveness and efficiency of it. On the other hand, as Resource Description Framework(RDF) data model forms the foundation of the Semantic Web, any information in the Semantic Web can be expressed with RDF graph, making the ranking algorithm for RDF knowledge bases greatly important. The RDF graph consists of nodes and directional links similar to the Web graph. As a result, the link-structure based ranking method seems to be highly applicable to ranking the Semantic Web resources. However, the information space of the Semantic Web is more complex than that of WWW. For instance, WWW can be considered as one huge class, i.e., a collection of Web pages, which has only a recursive property, i.e., a 'refers to' property corresponding to the hyperlinks. However, the Semantic Web encompasses various kinds of classes and properties, and consequently, ranking methods used in WWW should be modified to reflect the complexity of the information space in the Semantic Web. Previous research addressed the ranking problem of query results retrieved from RDF knowledge bases. Mukherjea and Bamba modified Kleinberg's algorithm in order to apply their algorithm to rank the Semantic Web resources. They defined the objectivity score and the subjectivity score of a resource, which correspond to the authority score and the hub score of Kleinberg's, respectively. They concentrated on the diversity of properties and introduced property weights to control the influence of a resource on another resource depending on the characteristic of the property linking the two resources. A node with a high objectivity score becomes the object of many RDF triples, and a node with a high subjectivity score becomes the subject of many RDF triples. They developed several kinds of Semantic Web systems in order to validate their technique and showed some experimental results verifying the applicability of their method to the Semantic Web. Despite their efforts, however, there remained some limitations which they reported in their paper. First, their algorithm is useful only when a Semantic Web system represents most of the knowledge pertaining to a certain domain. In other words, the ratio of links to nodes should be high, or overall resources should be described in detail, to a certain degree for their algorithm to properly work. Second, a Tightly-Knit Community(TKC) effect, the phenomenon that pages which are less important but yet densely connected have higher scores than the ones that are more important but sparsely connected, remains as problematic. Third, a resource may have a high score, not because it is actually important, but simply because it is very common and as a consequence it has many links pointing to it. In this paper, we examine such ranking problems from a novel perspective and propose a new algorithm which can solve the problems under the previous studies. Our proposed method is based on a class-oriented approach. In contrast to the predicate-oriented approach entertained by the previous research, a user, under our approach, determines the weights of a property by comparing its relative significance to the other properties when evaluating the importance of resources in a specific class. This approach stems from the idea that most queries are supposed to find resources belonging to the same class in the Semantic Web, which consists of many heterogeneous classes in RDF Schema. This approach closely reflects the way that people, in the real world, evaluate something, and will turn out to be superior to the predicate-oriented approach for the Semantic Web. Our proposed algorithm can resolve the TKC(Tightly Knit Community) effect, and further can shed lights on other limitations posed by the previous research. In addition, we propose two ways to incorporate data-type properties which have not been employed even in the case when they have some significance on the resource importance. We designed an experiment to show the effectiveness of our proposed algorithm and the validity of ranking results, which was not tried ever in previous research. We also conducted a comprehensive mathematical analysis, which was overlooked in previous research. The mathematical analysis enabled us to simplify the calculation procedure. Finally, we summarize our experimental results and discuss further research issues.

• 한국수산과학회지
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• 제17권5호
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• pp.353-360
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• 1984

유전가열을 이용한 내부가열로서 어육연제품을 조리${\codt}$살균함과 동시에 내부수분을 확산${\codt}$이탈시켜 제품의 수분활성을 조절하여 상온보장이 가능한 보장성 어묵을 가공하는 방법과 제품개발을 위한 원료첨가물의 배합 및 가공조건을 검토한 실험결과를 요약하면 다음과 같다. (1) 고등어 연육의 첨가물 배합조건은 고기풀 100에 대하여 전분(옥수수 전분) $10\%$, 소금 $1.5%$, MSG $0.6\%$, sorbitol $3.0\%$, 설탕 $2.0\%$일 때가 가장 적당하였다. (2) 연제품의 형상과 크기는 두께 0.8cm, 직경 8cm의 원반형이 균일한 가열과 팽화 및 표면경화를 막는데 가장 적당하였고, 이것은 연육을 8cm 직경의 원주형으로 충전하여 이것을 열탕중에서 $2{\sim}3$분간 가열처리하여 gel시킨 후 0.8cm 두께로 절단하여 만들수 있으므로 조작이 매우 편리하였다. 동시에 열탕처리는 유전 가열시간을 단축시키는 효과도 있었다. (3) 유전가열은 $5{\sim}6$분간을 2분, $1{\codt}5$분, $1{\codt}5$분 및 1분씩으로 간헐적으로 행하는 것이 제품의 성상과 수분활성 조절 및 살균효과가 좋았다. 1단계 가열에 의하여 확산${\codt}$이탈된 수분은 $60^{\circ}C$, 3m/sec의 열풍으로 2분간 건조하고 계속적으로 600 W 전열기로 $5{\sim}6$분간 가열 표면배소와 함께 최종적으로 수분활성을 조절할 수 있었다. (4) (3)과 같은 조건으로 가공한 연제품은 수분활성 0.84{\sim}0.86, 생균수 $3{\times}10^2/g$이하, TI함량 27.6mg/g였고 texture 시험성적은 hardness 42, cohesiveness 0.53, toughness 4.6, elasticity 0.8, folding test AA였다. (5) 연제품의 일반성분 조성은 수분 $40.1\%$, 단백질 $20.8\%$, 지방 $17.4\%$, 탄수화물 $16.2\%$ 및 회분$5.5\%$였다.