• International Journal of Advanced Culture Technology
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• 제7권3호
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• pp.92-96
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• 2019

This study analyzes the problems of fire qualification information websites and job search websites due to incomplete information in the job search process and suggests an improvement plan. It has been confirmed that the main reason for the cost of job searching is incomplete information required for a job search and job search through existing analysis. As a result, it is suggested to construct a smooth information system for economic entities and to provide easy access to information by mitigating the incompleteness of information. Based on this, analysis of the problems of Korean qualifications in the firefighting realm reveals that there is a qualification holder information and a job information site, and a qualification holder management system is established but only information of either qualification acquisition information or employment information is provided. In addition, it is easy to access information through a qualification acquisition information and employment information site via the Internet, but there are inconveniences that qualification acquisition information and employment information are dualized. In order to improve this, it is necessary to build a new customized integrated qualification management system that covers existing Q-net qualification acquisition information and worknet employment information.

• 시스템엔지니어링학술지
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• 제8권1호
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• pp.77-82
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• 2012

In Weapons acquisition process, if the requirements are not clear, it leads to confusion and conflict in business. In the development of next-generation weapons, to define and derive requirements has to start from decision of operational concept. It is difficult task and has many uncertainties. This paper has goal about development of knowledge acquisition process that derive military operational scenario-based requirements acquisition process and framework that classify and save the derived requirements for next project. That framework can generate new class and category, also suggest that verification of requirements. It help to derive and manage the requirements, and make it easy to grasp the requirements. Accordingly, it can help make military requirement plan and weapon acquisition process.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2005년도 후기학술대회논문집
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• pp.144-145
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• 2005

In this study, we have developed the high resolution multichannel seismic data acquisition system and shallow marine seismic source. It is easy to operate our source system which utilizes piezoelectric transducer of high electrical power. According to water depth, survey condition and purpose, transducer number of source system can be easily changed in order to maximize field applicability. In the recording part, we used 24 bits and 8 channel high speed A/D board in order to achieve the improvement of data quality and the efficiency of data acquisition. The developed system was tested and varied with the data acquisition parameters such as source-receiver offset, and transducer number versus water depth for the field application.

• 센서학회지
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• 제29권3호
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• pp.162-171
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• 2020

The incidences of cardiovascular diseases are rapidly increasing worldwide. The electrocardiogram (ECG) is a test to detect and monitor heart issues via electric signals in the heart. Presently, detecting heart disease in real time is not only possible but also easy using the myDAQ data acquisition device and LabVIEW. Hence, this paper proposes a system that can acquire ECG signals in real time, as well as detect heart abnormalities, and through light-emitting diodes (LEDs) it can simultaneously reveal whether a particular waveform is in range or otherwise. The main hardware components used in the system are the myDAQ device, Vernier adapter, and ECG sensor, which are connected to ECG monitoring electrodes for data acquisition from the human body, while further processing is accomplished using the LabVIEW software. In the Results section, the proposed system is compared with some other studies based on the features detected. This system is tested on 10 randomly selected people, and the results are presented in the Simulation Results section.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.231-234
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• 2013

According to the recent development of USN technology, it has been applied in various fields of construction management. In particular, the concrete curing management using the wireless measurement system is actively being conducted. However, the existing method has limitations such as the reinstallation of temperature sensors and repositioning of repeaters. It is also not easy to acquire the measured data. Thus, this study focuses on the concrete curing management. This study proposes data acquisition method using the smartphone on construction site and tests applicability of the data measuring device and the smartphone. The test allows us to suggest the actual communication distance on construction site and to determine the correction value that is applied to the measured temperature. The data acquisition method proposed in this study is intended to enable appropriate management on construction site and will be able to be applied effectively to a variable construction site. It can also be used in all fields of construction management.

• 한국해안해양공학회지
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• 제9권4호
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• pp.176-181
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• 1997

토목환경공학분야의 응용을 위하여 실용적이고 사용이 간편한 자료수집기를 개발하였다. 이 기기는 PC의 병렬포트를 이용하여 자료를 획득·전송하고 비전문가라 하더라도 실내 및 현장실험에 손쉽게 응용할 수 있도록 설계되었다. 통상의 자료수집기는 저장용량이 작아 불편한 점을 감안하여 컴퓨터의 저장장치를 그대로 이용하여 문제를 해결하였다. 또한 PC의 고급 프로그래밍 언어를 직접 이용하여 복잡한 자료수집계획을 손쉽게 수행할 수 있도록 하였다. 방화대교 건설현장에서 각종 센서와 GPS를 이용하여 행한 실제 현장시험을 통하여 개발된기기의 실용성을 입증하였다.

• International Journal of Advanced Culture Technology
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• 제8권1호
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• pp.38-43
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• 2020

This study examines the factors affecting the usage and diffusion of mobile easy payment services which is fast growing industry recently. After wide reviewing previous research about mobile payment, Some factors are identified as the factors influencing intention to use mobile easy payment services-confidence, innovativeness, mobile self-efficacy, relative advantage- through several mediating factors- perceived ease, perceived usefulness, perceived risk. Empirical study for a research model showed confidence, mobile self-efficacy and relative advantage are effective to the intention to use mobile easy payment services via perceived usefulness and perceived risk. Based on the results of the study, some practical implication for customer retention and acquisition are suggested.

• 한국항행학회논문지
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• 제11권2호
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• pp.163-169
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• 2007

본 논문에서는 x-ray 영상시스템의 영상을 획득하기 위하여 x-ray 발생기와 영상획득시스템 사이의 동기를 맞추어 주는 트리거 발생기를 연구분석 하였다. 무선 트리거 발생기는 디지털영상 획득시스템으로부터 영상획득의 시작을 지시할 수 있는 ACQ_START 신호와 영상획득의 끝을 알리는 ACC_END 신호를 발생시킬 수 있도록 설계하였다. 디지털 영상의 획득은 ACQ_START 신호와 ACQ_END 신호 사이의 시간동안에만 정확하게 이루어지며 무선 원격 x-ray 신호의 검출을 통하여 유선통신 프로토콜 없이 정확한 x-ray 영상의 획득이 가능하고 20 mAs 의 x-ray 레벨에서 3.5 line pair /mm 분해능을 나타냄을 확인하였다.

• 한국철도학회논문집
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• 제13권3호
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• pp.257-263
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• 2010

일반적으로 철도차량의 운영 유지보수 비용은 구입비용보다 높다. 따라서 철도차량의 수명주기비용(LCC)을 낮추기 위해서는 운영 및 유지보수가 용이하고 비용이 적게 드는 차량이 설계되고, 효과적이고 효율적인 운영 유지보수 지원 시스템이 공급되어야 한다. 이를 위해서 운영사는 획득초기단계에서 LCC 요구사항을제시하여 LCC가 낮은 철도차량이 설계되고 제작될 수 있도록 해야 한다. 본 연구에서는 운영사가 차량의 구매사양을 공고하고 제작사가 차량을 제작하여 공급하는 일반적인 차량의 획득절차에서 운영사와 제작사의 LCC업무 및 절차를 제시한다. 또한 이 때 사용될 수 있는 검증 가능한 LCC 산출모형을 제시한다.

• 한국군사과학기술학회지
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• 제6권1호
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• pp.91-107
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• 2003

A 2-dimensional search process in the time and frequency domain is required to acquire the GPS signal, when the code phase and the carrier Doppler for the specified GPS satellite signal are unknown. This paper proposes a new scheme, called Squared-D Searching Method, which can reduce the number of carrier frequency candidates, and a new scheme, named extended Multiple Correlator(XMC), which can reduce the number of code phase candidates. The Squared-D Searching Method can take the twice of Doppler frequency, therefore it can find carrier frequency candidates. The XMC is different from the general multiple correlator in that a combined form of the locally generated codes is used for despreading. Also, this paper tries to analyze a signal detection probability of a GPS receiver under more realistic environments. The result shows that lower detection probability can be obtained when the phase differences among the codes are larger in the correlation arms of a multiple correlator. This phenomenon is not easy to explain with the previous results. And besides, the result shows that proposed acquisition schemes give better performance than a conventional acquisition scheme.