• Proceedings of the Korean Society of Crop Science Conference
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• 2001.05a
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• pp.80-81
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• 2001

• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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• 2019.08a
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• pp.208-209
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• 2019

• Journal of Engineering Education Research
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• v.16 no.3
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• pp.42-50
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• 2013

The main purpose of this study was to develop a program outcomes assessment tool using reflection journal. Reflection journal has recently come to gain more attention from school as an alternative assessment tool. Although numerous studies reconfirmed the educational importance and value of reflection journal as an assessment tool, research on the assessment tool of the engineering accreditation, based on education view is scarce. After literature reviews about the case studies on the program outcomes assessment, this study, to analyse the current assessment tools, and then, examined the educational implications of reflection journal as a program outcomes assessment tool. This study suggested the assessment tool using reflection journal for PO6 (teamwork) and PO11 (engineering ethics), one of the most important assessment items in engineering accreditation. In this study, we used the performance criteria, assessment criteria, rubric, and closed the loop to measure the teamwork and engineering ethics. The result of this study is significant in terms of guiding the future evaluation system development for program outcomes.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2002.05b
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• pp.12-15
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• 2002

In this paper, we fabricated a electro-chemical discharge machine for drilling microscopic glass hole. In this research, we used a glass plate and NaOH solution. From the experimental result, we knew that the change of voltage wave was caused by drilling microscopic hole of glass using electro-chemical discharge method. So, we can give a function of the power auto stop to electro-chemical discharge machine with the change of voltage wave.

• Journal of Sensor Science and Technology
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• v.16 no.2
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• pp.126-131
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• 2007

In this paper, we fabricated piezoresistive pressure sensor with dry etching technology which used ICP-RIE (inductively coupled plasma reactive ion etching) and etching delay technology which used SOI (silicon-on-insulator). Structure of the fabricated pressure sensor shows a square diaphragm connected to a frame which was vertically fabricated by dry etching process and a single-element four-terminal gauge arranged at diaphragm edge. Sensitivity of the fabricated sensor was about 3.5 mV/V kPa at 1 kPa full-scale. Measurable resolution of the sensor was not exceeding 20 Pa. The nonlinearity of the fabricated pressure sensor was less than 0.5 %F.S.O. at 1 kPa full-scale.

• Journal of Sensor Science and Technology
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• v.22 no.3
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• pp.202-206
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• 2013

In this paper, a disposable glucose sensor was made of paper. Glucose sensor strip using carbon electrode is appropriate for the low price ones because it requires cheap materials and low cost production. Most of blood glucose sensors were developed with plastics, but it causes pollution problems. Therefore we developed disposable carbon electrode glucose sensor using paper. This sensor consists of upper and bottom plate. On the upper plate, three-dimensional channel are formed through pressing process. The fabricated paper glucose sensor shows relatively short sensing time of about 5seconds, excellent reproducibility ($R^2$=0.9558), and fabrication yield as well.

• Journal of Sensor Science and Technology
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• v.15 no.5
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• pp.352-356
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• 2006

In this paper, we developed enzyme electrode of a new form to improve performance of disposable glucose sensor. We could fabricate electrode of Cu/Ni/Au structure which has very low electrical resistance (0.1 $\Omega$) by sticking copper film to plastic film with laminating method and electro-plated nickle and gold on it. The enzyme electrode was completed by immobilizing enzyme on the fabricated electrode. The fabricated glucose sensor has very quick sensing time as 3 seconds, and excellent reproducibility, fabrication yield as well.

• Proceedings of the Korean Society Of Semiconductor Equipment Technology
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• 2006.10a
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• pp.198-201
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• 2006

In this paper, we fabricated drag force type and pressure difference type gas flow sensor with dry etching technology which used Deep RIE(reactive ion etching) and etching stop technology which used SOI(silicon-on-insulator). we fabricated four kinds of sensor, which are cantilever, paddle type, diaphragm, and diaphragm with orifice type. Both cantilever and paddle type flow sensors have similar sensitivity as 0.03mV/V kPa. Sensitivity of the fabricated diaphragm and diaphragm with orifice type sensor were relatively high as about 3.5mV/V kPa, 1.5mV/V kPa respectively.

• Journal of the Microelectronics and Packaging Society
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• v.8 no.2
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• pp.15-18
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• 2001

The Mo/si multilayer for EUV lithography was deposited using magnetron sputtering system. The multilayers were characterized using the cross-sectional transmission electron microscope (TEM) and low/high angle X-ray diffraction (XRD). The microstructure of Mo and Si was highly textured structure and amorphous, respectively. The well-defined low angle XRD peaks implies a well-defined multilayer structure. The interfacial layer of Mo-on-Si was thicker than Si-on-Mo interfacial layer.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2004.07b
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• pp.927-931
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• 2004

본 논문에서는 혈당측정기 제작에 있어 PDMS(Su-8)를 이용하였다. 이는 일종의 고분자로서 기계적 특성이 우수하고 제작이 간단하며, 가격이 저렴하고 다른 물질과의 접합이 용이하다. 혈액의 펌핑과 믹싱을 할 수 있도록 새로운 구조체를 설계하였으며 제안된 모델의 핵심 부분인 측정전극의 제작에 필요한 기초적인 실험을 수행하였다. 측정전극의 성능향상과 제작편의성, 저가격화를 위해 효소고정화방법으로 Electrospinning (전기방사)으로 제조된 PVA nanofiber web을 이용하였으며, 이는 중합도 Pn=1700, 비누화도 98%인 공업용으로 상용화된 값싼 제품이다. 따라서 이를 이용하면 측정용 전극의 효소고정화에 있어 저가격화를 이룰 수 있을 것으로 기대된다 고정화된 전극분석을 위해 SEM(주사전자현미경)과 NMR(핵자기공명분광계), FT-IR(적외선분광분석)장비를 사용하였다. 그리고 기존의 효소고정화법(전기중합법)과의 응답특성을 비교분석하였다.