• 한국인터넷방송통신학회논문지
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• 제13권5호
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• pp.77-83
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• 2013

현재, 조명제어와 관리기술의 한계점은 유선으로 인한 시설비 과다, 운영의 어려움, 에너지낭비이다. 이를 해결하기 위해 조명기기에 무선네트워크 기능이 탑재된 스마트 조명 정보 시스템을 복합적으로 수행하기위한 통신 및 관리 소프트웨어가 필요하다. 본 논문에서는 LED조명의 전력량 모니터링을 통해 에너지 절감을 위한 기술을 개발하고, 이 기술을 융합하기 위해 전력 에너지 정보시스템 LEIS(Lighting Energy Information System)을 개발 했다. LEIS는 센서에 의해 지그비 메쉬망을 통해 수집된 전력 데이터를 모니터링하고 제어하는 시스템으로 조명의 사용에너지 정보를 사용자에게 시각화하여 보여준다. 이 시스템은 LEM(Lighting Energy Metering)의 정보를 바탕으로 한 전력정보 데이터베이스 및 LEIS 웹어플리케이션으로 구성되고 LEIS를 통해 에너지를 최적화하여 제어할 수 있는 시나리오 기능을 제공한다.

• 한국진공학회:학술대회논문집
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• 한국진공학회 1994년도 제6회 학술발표회 논문개요집
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• pp.35-35
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• 1994

The surface segragation of NiZr, CuZr alloy has been studied wi th X-ray Imotoelectron spectroscopy(XPS), Auger electron spectroscopy(AES) and low energy ion scattering(LEIS). The composition of outmost atomic layer has been determinded by the use of LEIS at several incident energies using Ar+ ion. In the LEIS analysis, the effect of charge exchange has been estimated by a novel measurment of the charge exchange parameters while simul taneous determining the relative concentrations of Ni and Zr and the complementary information obtained will be described. The composition of the clean annealed surface, measured with AES only, will be contrasted wi th the surface concentration of the preferentially sputtered surface. The experimental results has been clearly demonstrated that when the NiZr ruld CuZr alloys are exposed to continuous Ar+ ion bombardment the outermost atomic layer is Zr rich due to preferential sputtering of Ni atoms. where Ni is preferentially sputtered, but the difference in sputtering yields is not sufficient to explain the observed composition. Therefore, it is necessary to consider other processes such as Radiation Induced Segregation(RIS). The surface composition of the heated sample surface predicts that Zr should surface segregate which futher supports the view that part of the Zr enrichment is due to RIS.to RIS.

• 한국동물학회지
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• 제37권3호
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• pp.297-303
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• 1994

A new species belonging to the unrecorded genus Sinishivophis Zhang, 1982, Sinn'shiuaphis korean n, sp. is described and two unrecorded species of Drepanosiphinae, Pteroca leis (Recticallis) alnijaponicae (Matsumural, and Tinocalfis tokochihoensis (Hisuchi) are reported from Korea.

• 한국어류학회지
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• 제25권3호
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• pp.182-184
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• 2013

The 9th Indo-Pacific Fish Conference (IPFC9) was held in Okinawa, Japan from 24th to 28th June 2013. Five hundred and thirty two delegates from 36 countries/regions around the world attended. The Conference took place with a welcome address by Dr. Keiichi Matsuura in the Laguna Garden Hotel next to the Okinawa Convention Center in the evening of 23rd June 2013, one day before the official start of the IPFC9. The winners of the two IPFC9 Bleeker Awards, Jeffrey M. Leis (Ecology) and Gerald R. Allen (Systematics) provided excellent talks on "Change in the early life-history of Indo-Pacific Fishes" and "The center of Indo-Pacific reef fish diversity". A total of 462 papers were presented, including 328 oral and 134 poster presentations. The main themes of IPFC9 included systematics, evolution, zoogeography and phylogeography, biodiversity, ecology, behavior, and conservation. There were 14 symposia, which included topics such as "Top predatory fish in the Indo-Pacific ecosystems", "Fish diversity across environmental extremes", "Ontogeny and systematics of Indo-Pacific fishes", and "Phylogenetics and diversification of the Percomorpha". IPFC10 will be held in Papeete, Tahiti.

• Applied Science and Convergence Technology
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• 제25권6호
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• pp.116-119
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• 2016

In this study, we fabricated the $K^+$ ion source for the various purposes and investigated the emission characteristics. The fabricated $K^+$ ion source was painted in the tungsten filament to make filament type ion source. The RGA spectra show that the filament type $K^+$ ion source has a good out gassing character, so it can be used in the ultra-high vacuum system. The maximum $K^+$ ion current was 20 mA when filament temperature was 1410 K and filament potential was 50 V. When the filament temperature was 1070 K, the initial beam current was 50 mA and decreased only by 2% during 4 hours. The emitting energy was measured to be 2.04 eV. This low value means that the fabricated specimen is a good $K^+$ ion source. We conclude that this filament type ion source can be used in various fields, including the LEIS research.

• 한국진공학회:학술대회논문집
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• 한국진공학회 1999년도 제17회 학술발표회 논문개요집
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• pp.29-29
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• 1999

The synthesis of layered structures on the nanometer scale has become essential for continued improvements in the operation of various electronic and magnetic devices. Abrupt metal-metal interfaces are desired for applications ranging from metallization in semiconductor devices to fabrication of magnetoresistive tunnel junctions for read heads on magnetic disk drives. In particular, characterizing the interface structure between various transition metals (TM) and aluminum is desirable. We have used the techniques of MeV ion backscattering and channeling (HEIS), x-ray photoemission (ZPS), x-ray photoelectron diffraction(XPD), low-energy ion scattering (LEIS), and low-energy electron diffraction(LEED), together with computer simulations using embedded atom potentials, to study solid-solid interface structure for thin films of Ni, Fe, Co, Pd, Ti, and Ag on Al(001), Al(110) and Al(111) surfaces. Considerations of lattice matching, surface energies, or compound formation energies alone do not adequately predict our result, We find that those metals with metallic radii smaller than Al(e.g. Ni, Fe, Co, Pd) tend to form alloys at the TM-Al interface, while those atoms with larger atomic radii(e.g. Ti, Ag) form epitaxial overlayers. Thus we are led to consider models in which the strain energy associated with alloy formation becomes a kinetic barrier to alloying. Furthermore, we observe the formation of metastable fcc Ti up to a critical thickness of 5 monolayers on Al(001) and Al(110). For Ag films we observe arbitrarily thick epitaxial growth exceeding 30 monolayers with some Al alloying at the interface, possible driven by interface strain relief. Typical examples of these interface structures will be discussed.

• Parasites, Hosts and Diseases
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• 제53권4호
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• pp.471-475
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• 2015

We describe here a rare case of traumatic myiasis occurred in August 2014, caused by an association of 2 Diptera species, Sarcophaga tibialis Macquart (Diptera: Sarcophagidae) and Lucilia sericata (Meigen) (Diptera: Calliphoridae), in a domestic cat in northern Italy. Species identification was based on adult male morphology. The present case is the first report of S. tibialis as an agent of myiasis in Italy, and also the first ever report of myiasis caused by an association of S. tibialis and L. sericata. The cat developed an extensive traumatic myiasis in a large wound on the rump, which was treated pharmacologically and surgically. The biology, ecology, and distribution of S. tibialis and L. sericata are also discussed. A literature review is provided on cases of myiasis caused by S. tibialis, and cases of myiasis by L. sericata involving cats worldwide and humans and animals in Italy.

• 한국어병학회지
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• 제30권2호
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• pp.135-148
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• 2017

Pathogen introductions associated with aquatic invasive species threaten ecosystems and biodiversity worldwide. Bigheaded carps (BHC), including Silver Carp Hypophthalmichthys molitrix, Bighead Carp H. nobilis, and their hybrids, are prolific, invasive pests in central US rivers. However, little is known about pathogen effects on invading BHC or how BHC affect the disease risk profile for native fishes in receiving ecosystems. We therefore conducted, from May 2013-December 2014, a systematic pathogen survey for BHC and native fishes in the Wabash River watershed, Indiana, USA. We found Pseudomonas fluorescens, P. putida, and Salmonella enterica DNA in BHC as well as native fishes, although none of these bacteria were exclusively present in BHC. DNA from other bacterial taxa was detected only in native fishes and Common Carp Cyprinus carpio. No gastrointestinal helminths were detected in BHC, although they were common in most native fishes examined. We also conducted in vitro studies on BHC tissues (skin, gill, fin, and fry) and found high sensitivity to Largemouth Bass virus, viral hemorrhagic septicemia virus, and infectious pancreatic necrosis virus. We conclude that BHC are not heavily burdened by bacteria, viruses and parasites in the invaded study ecosystems, although they do harbor native bacteria and show potential for high sensitivity to endemic viruses.

• 한국인터넷방송통신학회논문지
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• 제13권4호
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• pp.47-53
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• 2013

현재 조명의 효율화 및 제어시스템 개선을 통해 에너지절감을 추진한다는 계획을 수립하고 조명자체의 고효율화와 조명제어시스템의 성능 향상을 통해 에너지 절감을 추구하는 노력이 한층 강화될 것으로 보인다. 조명시스템에서 LED를 광원으로 사용할 경우 기존 대비 약 50% 이상의 고효율 조명 구현이 가능하다. 본 논문은 LED 디지털 조명을 제어하기 위해 USN을 활용해 유무선 통신을 지원하는 스마트 디머 와 스마트 스위치를 적용한 LEMS(Lighting Energy Management System)를 개발했다. 이 시스템은 유/무선 네트워킹 장치 및 시스템 S/W를 통해 실내외 조명 및 경관 조명을 포함한 특수 목적 등을 효율적이고 신뢰성 있게 제어 한다. 본 시스템은 LED조명의 Digital System Lighting을 통한 USN 원격통합제어기능 및 에너지 효율성을 증대하여 실내외의 조명에너지 사용량을 최소화 하고, 웹 또는 스위치를 통해 조명 에너지 사용량을 사용자가 측정하여 조명 사용량을 피드백 할 수 있게 하는 참여형 시스템이다.