• Journal of Forest and Environmental Science
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• 제34권4호
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• pp.275-283
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• 2018

This study created the running water (Bandibooliwon) and lentic water (Sooryunwon) artificial habitats of Luciola lateralis in Hwadamsup, Gwangju-si, Gyunggi-do from April 2014 to February 2016. Through various habitat types, metapopulation was formed, and more sound population was induced to be maintained via interactions between habitats. We investigated coenosite at the habitat creation-target site, and 20 species in the lentic water site and 38 species in running water site were found. After releasing L. lateralis, we checked the status of settlement of L. lateralis larvae through traps and macroscopy, controlled the flow velocity of the habitats in line with the life cycle of L. lateralis (hatching, larva period, landing, pupation, copulation, and oviposition), and shaped gentle slope at water side, and planted moss. We artificially supplied melanian snails (Semisulcospira sp.), the food source, in the running water site and induced stable feeding. Also, We created artificial insectary, bred larvae stably in winter, and secured firefly population for a festival. Through night time observation, the time most suitable for a festival was confirmed to be from 20:30 to 22:00.

• 대한임상검사과학회지
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• 제46권1호
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• pp.38-45
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• 2014

Intraoperative Neurophysiological Monitoring (INM) inspection has a very important role. While preserving the patient's neurological function be sure to safe surgery, neurological examination should thank. Cerebello pontine angle tumor surgery, especially in the nervous system is more important to the meaning of INM. In cochlear nerve, facial nerve, trigeminal nerve, which are intricate brain surgery, doctors are only human eye and brain to the brain that it is virtually impossible to distinguish the nervous system. They receives a lot of help from INM. In this paper, we examined six kinds broadly. First, the methods of spontaneous EMG and Free-running EMG, which can instantly detect a damage inflicted on a nerve during surgery. Second, methods of triggered EMG and direct nerve electrical stimulation, which directly stimulate a nerve using electricity to distinguish between nerves and brain tumors. Third, the method of knowing a more accurate neurologic status by informing neurological surgeons about Free-running EMG wave forms that are segmetalized into four. Fourth, three ways of knowing when a patient will be awaken from intraoperative anesthesia, which happens due to a weak anesthetic. Fifth, a method of understanding the structures of a brain tumor and a facial nerve as five dividend segments. Sixth, comparisons between cases normal facial nerve recovery and occurrence of a facial nerve paralysis during the postoperative course.

• 한국문헌정보학회지
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• 제45권3호
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• pp.279-301
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• 2011

본 연구에서는 최근 2년간 국내에서 실시된 40개 도서관, 138개 다문화프로그램 분석을 통하여 특성을 밝혀내고, 다문화 사회 진입이 오래된 미국과 캐나다도서관의 국가프로젝트 다문화프로그램, 주립도서관프로그램과의 비교분석을 통하여 개선방안을 도출하였다. 도출된 결과는 다음과 같다. 프로그램 개발방법은 기획단계에서부터 다문화 이주민의 요구사항을 분석하여 함께 기획되어야 하고, 장기적으로 수정, 보완되어 지속되는 프로그램이 만들어져야 한다. 프로그램 운영형태는 아웃리치프로그램으로 개발되는 것이 바람직하며, 콘텐츠내용은 실생활에 필요한 주제와 내용으로 개발되어야 하고, 이용자 유형별, 수준별로 개별화되어야 한다.

• 한국전자파학회논문지
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• 제10권5호
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• pp.653-662
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• 1999

본 논문에서는 부고조파를 이용한 주입 동기 발진기를 설계, 제작하였다. 발진기는 Two Signal Method ( (TSM)의 방법을 사용하여 직렬 궤환회로로 설계하였다. 발진기의 발진주파수 9.4 GHz에서 출력전력 6dBm으 로 free-running하고 었고, 입력선호가 들어가연 주파수가 체배되어 locking되었다. 이때 원하는 출력 파형의 크 기는 다른 부고조파 신호에 비해 최소 40dB 이상이며, 2차 부고조파를 이용한 경우 locking range는 최대 220 MHz 정도이고,4차 부고조파를 이용한 경우 10 MHz이었다 이때의 위상잡음은 각각 100 KHz offset에서 -111dBe/Hz, - 104 dBelHz 정도의 특성을 나타내었다.

• Steel and Composite Structures
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• 제27권2호
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• pp.161-175
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• 2018

In this study, in-situ dynamic tests of the world's longest steel box tied-arch bridge over the Yangtze River, China, are reported. The double deck bridge supports highway and monorail systems at upper and lower levels, respectively. Strain, displacement, and acceleration responses were measured and used to investigate the vibration characteristics of the bridge when excited by running trains and/or trucks at a speed of 5-60 km/h, train braking, and truck bouncing. Impact factors were correlated with the running speed of trains and trucks. A three-dimensional finite element model of the coupled monorail-train-bridge vibration system accounting for track irregularities was established to understand the system behavior and validated by the experimental results. Truck bouncing was the dominant impact factor on bridge responses. The running speed of vehicles determined the riding comfort of traveling trains.

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2007년도 제48회 학술심포지움 및 추계국제학술대회
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• pp.58.1-58.1
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• 2007

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• 대한기계학회논문집A
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• 제40권3호
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• pp.317-326
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• 2016

본 연구에서는 한국형 PRT차량의 주행안정성 및 승차감 향상을 위해 현가장치 최적화를 진행하였다. ISO 3888(Double Lane Change Test)를 통하여 주행안정성을 분석하고 ISO 2631-1을 이용하여 승차감 분석을 진행하였다. 이를 통해 주행안정성과 승차감에 대하여 다중반응표면법을 적용하여 현가장치 최적화를 진행하였다. 그 결과 모든 반응함수가 초기설계치보다 모두 개선되는 만족함수의 비율은 3.9 : 6.1이며, 이때 현가장치의 특성은 Stiffness의 경우 S2와 S3 model의 사이 값인 30.68 N/mm과 Damping 계수의 경우 D1 model의 값을 갖는다. 초기설계인 현재 PRT차량의 현가장치와 비교했을 때, 최적화된 PRT 현가장치 설계는 Roll angle와 Yaw rate는 0.37%, Side slip angle은 2.8%, Ride comfort는 5% 향상된다.

• Molecules and Cells
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• 제42권4호
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• pp.301-312
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• 2019

Post-transcriptional regulation underlies the circadian control of gene expression and animal behaviors. However, the role of mRNA surveillance via the nonsense-mediated mRNA decay (NMD) pathway in circadian rhythms remains elusive. Here, we report that Drosophila NMD pathway acts in a subset of circadian pacemaker neurons to maintain robust 24 h rhythms of free-running locomotor activity. RNA interference-mediated depletion of key NMD factors in timeless-expressing clock cells decreased the amplitude of circadian locomotor behaviors. Transgenic manipulation of the NMD pathway in clock neurons expressing a neuropeptide PIGMENT-DISPERSING FACTOR (PDF) was sufficient to dampen or lengthen free-running locomotor rhythms. Confocal imaging of a transgenic NMD reporter revealed that arrhythmic Clock mutants exhibited stronger NMD activity in PDF-expressing neurons than wild-type. We further found that hypomorphic mutations in Suppressor with morphogenetic effect on genitalia 5 (Smg5) or Smg6 impaired circadian behaviors. These NMD mutants normally developed PDF-expressing clock neurons and displayed daily oscillations in the transcript levels of core clock genes. By contrast, the loss of Smg5 or Smg6 function affected the relative transcript levels of cAMP response element-binding protein B (CrebB) in an isoform-specific manner. Moreover, the overexpression of a transcriptional repressor form of CrebB rescued free-running locomotor rhythms in Smg5-depleted flies. These data demonstrate that CrebB is a rate-limiting substrate of the genetic NMD pathway important for the behavioral output of circadian clocks in Drosophila.

• International Journal of Computer Science & Network Security
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• 제22권12호
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• pp.197-204
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• 2022

Sorting is an important data structure in many applications in the real world. Several sorting algorithms are currently in use for searching and other operations. Sorting algorithms rearrange the elements of an array or list based on the elements' comparison operators. The comparison operator is used in the accurate data structure to establish the new order of elements. This report analyzes and compares the time complexity and running time theoretically and experimentally of insertion, merge, and heap sort algorithms. Java language is used by the NetBeans tool to implement the code of the algorithms. The results show that when dealing with sorted elements, insertion sort has a faster running time than merge and heap algorithms. When it comes to dealing with a large number of elements, it is better to use the merge sort. For the number of comparisons for each algorithm, the insertion sort has the highest number of comparisons.

• 한국정보통신학회논문지
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• 제17권9호
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• pp.2048-2054
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• 2013

디지털기술의 발전으로 방송과 통신 영역 간에 융합이 이루어지면서 소비자의 다양한 디바이스를 통한 서비스(애플리케이션) 이용에 공간적, 시간적 제약을 제거하는 노력이 진행되고 있다. 특히 애플리케이션의 공통 실행 플랫폼으로 웹 (Web)의 중요성이 대두되면서 N-스크린 개념에 중요한 위치를 차지하고 있는 디지털방송 단말도 기존 데이터 서비스의 표준으로 삼고 있던 자바 (Java) 애플리케이션뿐만 아니라 웹 애플리케이션을 실행할 수 있는 플랫폼으로 발전하도록 요구되고 있다. 본 논문에서 소개하는 디지털방송 단말의 웹 애플리케이션 실행 플랫폼은 HTML5를 기반의 웹 애플리케이션 실행 엔진인 웹 커널과 웹 애플리케이션의 관리를 위한 윈도우 운영체제의 바탕화면 관리자와 유사한 웹 데스크탑, 그리고 웹 애플리케이션 개발자를 위한 SDK를 제공한다. 특히, 웹과 TV 영역의 기술적 접목을 통해 HTML5 기반 웹 애플리케이션이 프로그램 편성정보와 같은 방송 부가정보와 디지털방송 단말의 자원을 자유롭게 활용할 수 있는 웹 애플리케이션 개발 프레임워크를 제공한다.