구조화 문서 검색을 위한 다단계 역색인 기법

김종익,Kim, Jong-Ik 한국정보처리학회 2008 정보처리학회논문지B Vol.15 No.4

XML로 대표되는 구조화된 문서의 검색을 위해서는 구조 조인 기법이 많이 사용되며 구조 조인 기법을 사용하기 위해서는 구조 조인에 참여하는 엘리먼트들을 추출하는 과정이 선행되어야 한다. 이 과정을 위해서 일반적으로 동일한 태그 값을 가지는 엘리먼트들을 리스트 형태로 추출해 주는 역색인을 사용한다. 하지만 이러한 기존의 기법은 경로 질의 내의 부모-자식 관계나 조상-후손 관계를 비교적 비용이 비싼 구조 조인으로 모두 처리해야 하기 때문에 경로의 길이가 길어질수록 질의 처리 비용이 크게 증가하는 단점을 가지고 있다. 본 논문에서는 기존의 역색인과는 달리 엘리먼트 추출과정에서 부모-자식 관계에 있는 엘리먼트들을 처리할 수 있는 단계별 역색인을 제안한다. 본 논문에서 제안하는 단계별 역색인은 경로 질의 내의 부모-자식 관계를 가지는 엘리먼트 쌍(pair)들의 리스트를 추출해 준다. 또한 단계별 역색인으로부터 추출된 엘리먼트 쌍들의 리스트를 처리하기 위해 기존의 구조 조인과는 다른 변형된 구조 조인 기법을 제안하며 실험을 통해 제안된 기법이 기존의 기법보다 2배에서 4배 가량의 성능향상이 있는 것을 확인하였다. In general, we can use an inverted index for retrieving element lists from structured documents. An inverted index can retrieve a list of elements that have the same tag name. In this approach, however, the cost of query processing is linear to the length of a path query because all the structural relationships (parent-child and ancestor-descendant) should be resolved by structural join operations. In this paper, we propose an inverted index technique and a novel structural join technique for accelerating XML path query evaluation. Our inverted index can retrieve element lists for path segments in a parent-child relationship. Our structural join technique can handle lists of element pairs while the existing techniques handle lists of elements. We show through experiments that these two proposed techniques are integrated to accelerate evaluation of XML path queries.

적응형 필터를 이용한 아무르 불가사리 인식

김종익,심현보,김성락,Kim, Jong Ik,Shim, Hyun Bo,Kim, Sung Rak 한국정보통신학회 2013 한국정보통신학회논문지 Vol.17 No.4

The Amur Starfishes, known as give huge damages to shellfish farms, are being removed by only divers and fish net in the wide areas. Therefore, increasing recognition rates of starfishes are desperately required to remove high amounts of Amur Starfishes effectively. Meanwhile, current technology of obtaining the images of starfish distribution has limitation of obtaining color images due to using visible light in the darkness seabed area. In this research, we have used infrared ray, which is very penetrated, and strong against noise that comes from floating objects under the water, in order to solve current problems. As a result, we have acquired better images to analyze recognition rates of starfishes, and also able to received much satisfied recognition rate results for 88.7% of Amur Starfishes by adopting the most suitable adaptive filter method. 우리나라 패류 양식장에 큰 피해를 주는 것으로 알려진 아무르불가사리는 잠수부나 어망에 의해 여러 구역을 더듬어서 구제하고 있는 실정이다. 이를 좀 더 효과 적인 방법에 의해 빠른 시간에 많은 량의 아무르불가사리를 구제하기 위해서는 불가시리 인식이 불가피하다. 현재 불가사리 영상 획득 방법은 열악한 수중 환경에서 가시광선 영역을 이용하여 어두운 해저로부터 칼라 영상을 획득하는 데는 한계점이 있다. 이 논문에서는 이러한 문제점을 해결하기 위해서 수중에서 투과력이 우수하고 수중 부유물 잡음에 강한 적외선 영상을 이용하며, 획득된 적외선 수중 영상으로부터 불가사리 인식률을 높이기 위하여 전처리 과정에서 최적 적응형 필터 설계 방법을 제안하고, 제안한 적응형 필터를 이용한 아무르불가사리의 전체 인식률은 88.7%로 만족한 인식 결과를 얻게 되었다.

특별기고 - 상록활엽수 동해 예방에 관하여

김종익,Kim, Jong-Ik 한국조경수협회 2011 造景樹 Vol.122 No.-

임상연구 : 전신마취 중 심전도의 교정 QT 간격에 대한 Ondansetron의 영향

김종익 ( Jong Ik Kim ),이상귀 ( Sang Kyi Lee ),손지선 ( Ji Seon Son ),고성훈 ( Seong Hoon Ko ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.53 No.6

Background: Prolongation of the corrected QT interval (QTc) has a potential risk of inducing life-threatening cardiac dysrhythmia. Although 5-HT3 antagonists are useful antiemetics, several cases of cardiac dysrhythmia after administration of 5-HT3 antagonists have been reported. Therefore, this study was conducted to evaluate the changes in QTc interval that occur after administration of a clinical dose of ondansetron during general anesthesia. Methods: Seventy-five patients, who underwent elective surgery under standardized general anesthesia were evaluated. After anesthetic induction, the patients were given either normal saline, 2 mg or 4 mg of iv ondansetron. The QTc on the electrocardiogram was measured immediately prior to administration of the treatment drug and then every minute after injection of the study drug for 10 minutes, 12 and 15 minutes. Results: There were no differences observed in the baseline QTc of the different treatment groups. In addition, there were no significant changes in the QTc interval of the control group, however, the QTc interval was prolonged significantly in both the ondansetron 2 mg and 4 mg groups. Further, ΔQTc (the difference in QTc interval from the baseline value) was significantly prolonged in the ondansetron 2 mg and 4 mg groups when compared with the control group. There were no differences in the number of patients who showed abnormal QTc and there were no incidences of dysrhythmia in any of the three groups. Conclusions: Ondansetron administration for emesis prophylaxis during general anesthesia was associated with statistically significant prolongation of the QTc interval. The authors recommend that caution be used when ondansetron is administered to prevent and/or treat postoperative nausea and vomiting, particularly in patients who have a prolonged QTc interval. (Korean J Anesthesiol 2007; 53: 704∼8)

TDX-10의 호제어 프로세스간의 제어 이전 방법

김종익(Jong-Ik Kim),박광로(Kwang-Ro Park),홍종일(Jong-Il Hong),신현순(Hyun-Soon Shin) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.6

이동통신 교환기의 시험을 위한 이동호 모사장치의 설계 및 구현

김종익(Jong-Ik Kim),홍종일(Jong-Il Hong),이남준(Nam-Jun Lee) 한국통신학회 1994 한국통신학회 학술대회논문집 Vol.1994 No.11

국내수목원 조성 및 운영경향에 관한 연구

김종익 ( Jong Ik Kim ),강철기 ( Cheol Gi Kang ),신현탁 ( Hyun Tak Shin ),성정원 ( Jung Won Seng ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2011 한국환경복원기술학회지 Vol.14 No.5

Research and conservation of plant species for the nation arboretum, collection and securing of the plant species for both public and private arboreta and education for the arboreta which is affiliated to the university are overall management goal of the arboreta in Korea. Most of the arboreta in Korea run the programs and events for guide and interpretation of forest, but the programs and events are not well specified by the arboreta. Regarding the reasonable level of entrance fee should be discussed further as the lack of information and understanding. But the specified entrance fee between public and private arboreta should be considered. An eighty three percent of arboreta in Korea has been properly managed the species information. The reasonable management should be considered in case of unusual management of collected plant genetic resources. Although the overall impending difficulties for the management of arboreta in Korea is the lack of trained or qualified staffs, securing tasks independently for the public arboreta and relatively low salary for the private arboreta are main difficulties. Most of the difficulties are derived from the lack of its mission of the arboreta. The management of arboreta by the mission statement is one of the core targets including the characters such as climate or region should be considered. The securing qualified or trained staffs should be considered in the development of arboreta in Korea including the modification of relevant regulations or law.

부상분리 기술을 이용한 현장형 조류수거시스템의 발전 과정 및 개발 방향

김종익(Jong Ik Kim),한인섭(Ihn Sup Han),매계문(Qi Wen Mei),조종주(Chong Joo Cho),정순우(Soon Woo Jung) 大韓環境工學會 2017 대한환경공학회지 Vol.39 No.4

현장형 조류수거시스템(이하 OACS)은 녹조 현상이 심각할 때 긴급 대책으로 투입되는 대안 중의 하나로, 대규모 수역에 투입되는 OACS가 갖추어야 할 조건은 신속대응성, 효율성 및 대용량이다. 부상분리 기술을 이용한 OACS의 성능은 부상․포집․수거 공정의 효율에 의해 결정되며, 처리용량 및 효율성에 가장 중요한 인자는 포집과 수거이다. 이들이 자동화되면 전체 작업속도와 일일 처리수량이 증가한다. OACS에 적용된 기술은 진보될수록 장비의 단순화․소형화와 포집과 수거공정 자동화가 발전하여 신속대응성과 효율성이 향상되었으며, 잔류슬러지를 크게 줄여 친환경성과 수질 지속효과를 향상시켰고, 슬러지 수거량도 증가하여 대용량이 실현되는 방향으로 개선되었다. 그 결과 시스템은 조류증식비율을 극복할 수 있는 조류제거량을 달성할 수 있었고, 처리용량 대비 운영비가 감소되어 기술의 경제성을 크게 향상시켰다. On-site Algae Collecting System (OACS) is one of urgent countermeasures to clean the raw water when the algae blooms severely. Rapid reaction capability, high efficiency and large capacity are required when applying OACS to large water areas. The total performance of OACS are always determined by unit process named Flotation, Trapping and Collection. The working efficiency and daily treatment quantity of OACS can be increased when it runs automatically. As the rapid development of OACS technology, in the first place, equipment are miniaturized and simple. And in the second place, automation process from Trapping to Collection are advanced. So, They produce results higher working efficiency, smaller residual sludge on treated water, system’s advanced environmental friendly features and the increased amount of sludge by Collection process to achieve large capacity. Now OACS has overcome the algae multiplication rate to ensured the amount of removal algae. In another aspect, it is high economically feasible because of reducing operation cost against the large capacity.

증례보고 : 암성 통증 조절을 위한 지속적 경막외 통증 조절 중 발생한 경막외 카테터 파열

김종익 ( Jong Ik Kim ),김덕규 ( Deok Kyu Kim ),이정우 ( Jeong Woo Lee ),손지선 ( Ji Seon Son ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.53 No.4

During pain control by continuous epidural analgesia, the breakage of epidural catheter is a very rare complication. We experienced breakage of epidural catheter in patient of cancer pain during continuous epidural analgesia. We performed epidural catheterization between T12 and L1 level for pain control. After 6 weeks of epidural catheterization, abruptly patient complained severe pain. When we applied negative pressure to catheter by syringe before epidural injection of bolus dose, a few airs were aspirated. We strongly suspected breakage of catheter, and the breakage in 16-17 cm from epidural catheter tip was confirmed by normal saline administration via epidural catheter. After new epidural catheter inserted again, patient`s pain was controlled by VAS 2-4 and another complications were not appeared. We must carefully manage the catheter because of complications of epidural catheter. (Korean J Anesthesiol 2007; 53: 513~5)

우리나라와 EU 물관리체계의 기초적 비교 분석

김종익(Jong-ik Kim),이태관(Tae-gwan Lee) 계명대학교 낙동강환경원 2012 環境科學論集 Vol.16 No.1

This study is a comparative analysis of the water management system between South Korea and the European Union (EU). The EU has been conducting one of the most powerful, integrated water management policies in the world. The EU's Water Framework Directive (WFD) is a unifying law aimed at covering various types of water bodies under a single departmental agency which is able to colligate entire water management. The WFD also promotes civil participation. Since it is rather less-obliged type of law, it has been criticized as an ambiguous standard for protecting the quality of water. There have been warnings of exploitation over exemptions and uncertainties in raising funds for management. However, following the EU's example, South Korea also expects to form an integrated water management structure considering its own geopolitical, economic, and social situation. South Korea plans to maintain the resource-intensive policies and, at the same time, conduct enforcement so as to minimize potential side effects by considering environmental factors rather than the environment itself. In the meantime, it is believed that if one department were to control and monitor the quantity and quality of water in South Korea, this would enforce an efficient and effective decision-making process and resolve prospective conflicts and complications after the departmental unification. Furthermore, dual water supply system is recommended in order to maintain reasonable cost levels for water prices.