• Journal of Biosystems Engineering
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• 제40권3호
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• pp.277-283
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• 2015

Background: Foodborne disease outbreaks from various food sources are a major health concern worldwide. Current methods for detection of foodborne pathogens are both expensive and time-consuming. Purpose: This review aims to present the current information available on the use of lateral flow test strips to detect pathogens in food products to enhance food safety. Results: Frequent foodborne disease outbreaks from various food sources have increased the need for rapid and easy methods for routine analysis of foodborne pathogens. Present detection methods for foodborne pathogens require expensive instruments, experts, and long time for sample analysis. Lateral flow test strips have drawn attention in recent years because of their ability to detect analytes quickly and easily. This review focuses on the principle of the lateral flow test, the various formats of lateral flow test strips, recognition elements, labeling tags, and reading instruments. In addition, this review also discusses the future prospects for the lateral flow test strips.

• 전자공학회논문지A
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• 제32A권7호
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• pp.115-122
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• 1995

This paper presents the simulation environment that verifies whether a new microprocessor described with HDL is compatible with MS-DOS. The phrase 'compatible with MS-DOS' means that the microprocessor can execute MS-DOS without any modification of MS-DOS's binary code. The proposed verification environment consists of HDL simulator and user interface module. And the communications between them are performed by using sockets which UNIXprovide. The HDL simulator is equipped with several functions, which use PLI to emulate ROM-BIOS facilities. The ROM-BIOS emulation routine is described by using these functions. User interface module utilizes S/MOTIF and participates in emulating PC monitor and keyboard. The verification environment is tested by executing the MS-DOS commands (DIR, FORMAT, DATE, TIME etc.) with the HDL model of microprocessor, and the display of user interface module verifies that the environment works correctly. In this paper, the method of constructing the verification environment is presented, and the simulation results are summarized.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.261-262
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• 2006

According to the previous work, various well known methods including maximum a posteriori probability classifier (MAP) and multi layer perceptron networks classifier (MLP) showed competitive results. Since even the small errors often leads to a fatal result, we investigated the method that reduces classification error perfectly by screening out some ambiguous patterns. Those ambiguous patterns can be examined by routine biopsy. We incorporated an ambiguous category in MAP and MLP. Classification results involving 216 spectra gave 100% sensitivity for the case of MLP.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.937-938
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• 2006

There are lots of intelligent service robots in these days. People are unwilling to do routine works, dangerous works, and difficult works. But a robot can do these works instead of human. We introduce a intelligent service robot for unmanned store management. The robot can detect and recognize a person, deliver some goods, manage a store, and answer the telephone. We have developed the robot and tested the performance.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2001년도 하계종합학술대회 논문집(5)
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• pp.195-198
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• 2001

We developed the portable blood analysis system, which can be measured pH of the blood. This system is composed to electronic circuit, mechanism, and system software. Electronic circuit is composed to the sensor, pre-amp part, temperature regulation part, fluid sensing part, A/D(analog to digital) conversion part, main and peripheral device processing part. And the mechanism is composed to the flow cell and the liquid flow part. The liquid flow part is consisted of blood and washing control system under the control of the 6-channel solenoid valve and syringe rump. The system software is composed to measurement program, calibration program, washing and diagnostic program. The program of each routine is designed as sequential process for an efficiency. And the portable pH analysis system used two-point calibration method using the two types of corrective liquid. As a result, we obtained the calibration curve and calculated the value of pH. For verifying the system, we confirmed the output voltage of the sensor, and estimated reappearance of system using the standard liquid.

• 융합신호처리학회논문지
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• 제2권1호
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• pp.108-112
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• 2001

Heart sound contains rich information regarding the dynamics of the heart and the auscultation has been a first choice of routine procedures for diagnosis of the heart. However, heart sounds captured using a conventional stethoscope are not often loud or clear enough for doctors to precisely classify their characteristics, especially, under the noisy environments of the hospital. A simple auscultation device that removed shortcomings of the conventional stethoscope was constructed in the study. The device employed a polymer based adherent differential output sensor which was on contact with skin through a coupling medium and appropriated electronic circuits for signal amplification and conditioning An ordinary headphone is taken to hear the captured heart sounds and the volume can be adjusted to hear well. It is also possible that the device sends the captured heart sound signals to a PC where the signals are further processed and viualized.

• 응용통계연구
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• 제25권6호
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• pp.947-958
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• 2012

When modeling event times in biomedical studies, the outcome might be incompletely observed. In this paper, we assume that the outcome is recorded as current status failure time data. Despite well-developed literature the routine practical use of many current status data modeling methods remains infrequent due to the lack of specialized statistical software, the difficulty to assess model goodness-of-fit, as well as the possible loss of information caused by covariate grouping or discretization. We propose a model based on pseudo-observations that is convenient to implement and that allows for flexibility in the choice of the outcome. Parameter estimates are obtained based on generalized estimating equations. Examples from studies in bile duct hyperplasia and breast cancer in conjunction with simulated data illustrate the practical advantages of this model.

• Nuclear Engineering and Technology
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• 제31권5호
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• pp.445-454
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• 1999

This work describes the adaptation of extractive scintillation by URAE $X^{TM}$ with a photon-electron rejecting alpha liquid scintillation (PERAL $S^{)}$ spectrometer to the analysis of uranium in aqueous samples. The extraction efficiency of the system was evaluated under varing chemical conditions including pH, and sample-cocktail volume ratio. Isotopic information from the (PERAL $S^{)}$ spectrum of natural uranium was obtained using a curve fitting routine. Comparisons of the result with that obtained from alpha spectrometry method using ion implanted silicon detector showed good agreement.t.

• 한국측량학회지
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• 제7권2호
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• pp.21-26
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• 1989

이 모듈은 우리나라 수준측량 자료 입력용으로 프로그래밍 되었으며, 택입, 삭제, 관람, 저장기능을 갖추고 있다. 수준 노선벨 데이타 파일은 “수준측량 계산부” 양식을 모델로한 노드(Node)들의 정열된 리스트로 구성된다. 어느 누구나 쉽게 사용할 수 있도록 대화식 작업방법을 채택하였으며, 수준측량자료의 특징을 응용하여 까다로운 반복작업을 줄임으로써 작업능률을 향상시켰다. 이 프로그램은 C 언어로 작성되었으며, IBM PC/XT중 이상의 컴퓨터에서 사용 가능하다. 장래에 이와같은 단위 모듈들을 연결하여 종합 수준 정보 시스템을 구성할 수 있을 것이다.

• 대한치과보존학회:학술대회논문집
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• 대한치과보존학회 2003년도 제120회 추계학술대회 제 5차 한ㆍ일 치과보존학회 공동학술대회
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• pp.555-555
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• 2003

The purpose of this prospective study was to assess the incidence of flare-ups among patients who received endodontic treatment for the last 11 months and to examine the correlation with pre-operative and operative variables. Data were gathered on 840 teeth of 755 patients over 11 months. At first visit, information was obtained on each patient as to their demographics, presenting signs, symptoms and diagnosis, and treatment performed. Treatment procedures were routine. If additional appointments were necessary, the access cavity was closed with a dry cotton pellet and ZOE.(omitted)