• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.125-128
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• 2008

In this paper, a stand-type planar antenna of 900MHz RFID band is designed and fabricated. As the proposed antenna is stand-type use of air permittivity, Bandwidth used ground height at rectangle patch structure and coaxial feed line is widen. Also wideband width can solve problem that RFID tag attached to things happens frequency shift keying phenomenon by liquid, special metal, temperature, humidity etc. Bandwidth of fabricated antenna to VSWR less than 2 is satisfied 11.9% at $890MHz{\sim}1000MHz$. And proposed antenna is circular polarization antenna of operating characteristics that axial ratio is less than 2 and gain is 6dBi.

• Journal of Chest Surgery
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• v.40 no.10
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• pp.691-695
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• 2007

Background: The introduction of central venous catheters in 1979 has aided the administration of chemotherapy to oncologic patients. We analyzed the clinical reviews and complications of totally implantable venous catheters in an effort to achieve optimal management. Material and Method: We retrospectively studied 100 cases with totally implantable venous catheter at our hospital and we report the results. Result: 100 totally implantable venous catheters were placed in the right subclavian vein in 74 cases (74%), the left subclavian vein in 21 cases, the right jugular vein in 3 cases, the left jugular vein in 1 case and the right femoral vein in 1 case. The immediate complications were 5 cases in malposition of the catheter and 5 cases of arterial puncture. The late complications were 1 case of subclavian vein thrombosis, which was treated with anticoagulation, and 2 cases of pinch-of syndrome. There were no other early or late complications. Conclusion: The low rate of complications in this study confirms the safety and convenience of using totally implantable venous catheter in patients undergoing prolonged chemotherapy. Yet because Infection, thrombosis, and catheter fracture are the most common long term complications of totally implantable venous catheters, early diagnosis and management of these problems can prevent severe complications.

• The monthly packaging world
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• s.172
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• pp.108-112
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• 2007

• Korean Journal of Plant Resources
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• v.13 no.3
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• pp.213-218
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• 2000

Morphological characteristics of 16 collected safflower (Carthamus tinctorius L.)accessions were studied at Gyongbuk A.T.A. Uisong Medicinal Plant Experiment Station in 1998. As for plant height, 5 lines were tall(more than 131cm), which were mainly foreign safflower. Middle and small were 5 and 6 accessions, respectively. Number of branch per plant was 11∼13 in 2 accessions of domestic safflowers while foreign safflowers have more than 50 branches per plant. Leaf shapes were oblong(3 lines), lanceolate(10 lines) and broadly linear(3 lines). There were three types of leaf margin shape which were repand(7 lines), serrate(4 lines) and parted serrate(5 lines). Flower color was white(1 line), yellow(13 lines) and red orange(2 lines). As for flower head shape, 14 lines were conical and 2 lines were flattened. There were thorns on bract of flower head in 11 lines but in 5 lines there were not. Domestic safflower lines had seeds of conical shape. Contrastively, seed shapes of foreign saffower lines were oval.

• Journal of Chest Surgery
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• v.39 no.12 s.269
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• pp.946-948
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• 2006

The patient was a 42-year-old female with breast cancer who had an implantable central venous catheter inserted percutaneously into left subclavian vein for chemotherapy. The postinsertion chest x ray revealed that there was no compressive sigh of catheter. Three months after insertion of the catheter, the patient was admitted to the hospital for 4th chemotherapy. The port was accessed but blood could not be aspirated and the catheter could not be flushed. A chest x ray revealed that the catheter was completely transected at the point where the catheter passed under the clavicle. Percutaneous removal of the distal fragment of the catheter was accomplished. The patient was discharged after successful removal of fragment of catheter.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.52-54
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• 2018

울산신항 북방파제(제3공구)축조공사에서는 국내 최초로 선박제조용 F/D(Floating Dock)선을 적용하여 케이슨 제작 및 거치공사를 실시하였으며, 공장형 슬립폼 제작장(IP-CCV)를 적용한 경우 보다 공기단축 및 원가절감의 효과가 있었다. F/D선 공법 순서는 작업부두에 F/D선 접안, 케이슨 제작, F/D선 진수장 이동, F/D선 및 케이슨 진수, 케이슨 예인 및 거치의 순서로 시행되었으며, 현재 턴키공사의 설계특화 내용으로 활용되어 시공안정성 향상 및 공기, 공사비 절감 방안으로 적용되고 있다. 향후 남북관계가 원만히 해결되어 동해안 항만개발이 가속화되면 국외특허공법(IP-CCV)에 의존없이 경쟁력있는 공법이라 판단된다.

• Korean Journal of Plant Resources
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• v.12 no.1
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• pp.50-61
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• 1999

The leaf morphological and anatomical characters about 17 taxa of Aster and its allied taxa were investigated to estimate taxonomic values. Leaf shapes of the treated taxa were divided into five types; elliptic, spathulate, lanceolate, linear, ovatodeltoid. These types were fixed in same taxa, but variable among different taxa, therefore useful as taxonomic character. Leaf margins were divided into four types; entire, serrate, dentate, incised, these types were invariable in most taxa, but variable among individual in same taxa such as Kalimeris incise, Aster spathulifolius. The size and shape of leaf epidermal cell, the size and distributional numbers per 10$\textrm{mm}^2$ of stomata, deposit feature of cuticle were not distinguished clearly from treated taxa, but presence of stomata on adaxial surface, size and distributional numbers per 10$\textrm{mm}^2$ of stomata were useful taxonomic characters in some taxa such as Gymnaster koraiensis, Aster altaicus var. uchiyamae, Aster tripolium, Heteropappus arenarius. The leaf trichomes were divided into five types by basic form, sculpturing on their outer surface and cell arrangement; uniseriate granulate conical type, uniseriate psilate conical type, uniseriate psilate filiform type, globular type, biseriate vesicular capitate type. In spite of various habitat, basic morphology of trichomes were not changed, therefore, it was thought to be good taxonomic character.

• Journal of the Korean Institute of Telematics and Electronics S
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• v.36S no.3
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• pp.18-26
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• 1999

소프트웨어 개발과정에서는 설계 및 코딩에 의해서 프로그램 내에 많은 결함이 삽입되고 시험을 거치는 동안 결함은 발견되고 수정되어 진다. 이와 같은 반복 작업을 통해서 소프트웨어 내에 잠재하고 있는 에러들을 발견, 조치함으로써 소프트웨어 품질은 향상되고 품질에 대한 신뢰성이 높아진다. 본 논문에서는 위와 같은 소프트웨어 개발 과정을 거치는 동안에 많은 시험이 동반되고 이에 따른 시험의 여러 자원이 투입되는데 착안하여 소프트웨어 신뢰도가 성장되어 가는 과정에 수반된 시험능력을 기반으로 한 시험능력의존형 소프트웨어 신뢰도 성장모델을 살펴보고 이를 적용하여 개발중인 소프트웨어에 대한 시험능력 투입에 따른 신뢰도를 평가하였다. 또 S-Shaped Model에 의한 평가치와 비교하여 시험이 진행됨에 따라 소프트웨어 고장 발견율이 상승되는 것을 보였다.

• Bulletin of the Korea Photovoltaic Society
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• v.8 no.1
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• pp.9-19
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• 2022

전 세계적으로 탄소중립에 대한 중요도가 증가하면서 국내에서도 이를 위한 그린뉴딜 정책이 발표되었다. 태양전지는 탄소중립 실현을 위한 중요한 신재생에너지 중의 하나이며, 최근에는 실외 거치형 발전 시스템을 넘어 건축 창호 및 외벽, 자동차 선루프, IoT 센서 구동용 전원 등 다양한 분야에서 제품들과의 융합화를 위한 소재/시스템 기술이 개발되고 있다. 본 원고에서는 유기태양전지를 활용한 Product integrated 태양전지 소재 및 응용 기술에 대해서 살펴보고자 한다. 특히, 실내 조명을 이용한 유기태양전지 기술에 대해 자세히 논의하고자 한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.5
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• pp.221-227
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• 2013

In this paper, Satellite DMB/WiBro antenna and PCS/WiBro antenna improving indoor coverage for mobile services are designed and fabricated. Satellite DMB/WiBro bands repeater antenna and PCS/WiBro bands repeater antenna are proposed as a simple radiator with loading capacitor to generate LHCP(Left Hand Circular Polarization). The proposed antenna for Satellite DMB/WiBro and PCS/WiBro bands communication are fabricated by copper plate uploader type and substrate uploader type. The designed and fabricated antenna has a bandwidth of 70MHz at 1.816GHz~1.886GHz and bandwidth of 107MHz at 2.247GHz~2.354GHz. Maximum gain of radiation pattern was up to 5dBi.