• Journal of the Korea Safety Management & Science
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• v.14 no.4
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• pp.303-311
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• 2012

Recently SW is the key industry which leads the HW industry and service industry, but market size of SW is only 0.9% of GDP. It is necessary systematic and strategic support to create new SW market through SW convergence and to secure the global competitiveness. This paper deals with some strategic suggestions for progress of SW industry in company with regional economy. We survey and analyze the many SW support projects by government and take professional advice from some specialists of regional information industry promotion agency. We draw 10 strategic suggestions for support of SW industry. Also we analyze the relative importance of 10 strategic suggestions by AHP analysis.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.4
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• pp.772-779
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• 2015

In this paper,a reconfigurable multi-band mobile antenna with switching line for LTE band 13, GSM, K-PCS, WCDMA band. The proposed antenna is planar strip line design and composed of stub shorted to the ground plane and two switching line for proposed band operation. To obtain the optimized parameters, we used the simulator, Using the obtained parameters is fabricated. The numerical and experiment results demonstrated that the proposed antenna satisfied the -6 dB impedance bandwidth requirement while simultaneously covering when the state of sw1 and sw2 on for LTE band 13, the state of sw1 off and sw2 on for GSM, K-PCS, the state of sw1 off and sw2 off for WCDMA. Respectively and characteristics of gain and radiation patterns are determined for a reconfigurable multi-band mobile terminal.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.11a
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• pp.500-503
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• 2017

차량 내 전장부품이 증가하고, 차량 OEM(Original Equipment Manufacturing)이 다양한 차종을 생산 판매함에 따라 다양한 SW(software) 형상이 개발되고 있다. 따라서, 기존에 개발된 SW 형상과 변경된 SW 형상 간에 기능 일치성 검증에 대한 필요성이 증가하고 있다. 두 가지 SW 형상 간에 기능 일치성 확인을 위한 테스팅 방법으로 Back-to-Back Testing이 있는데, 이는 각 SW 형상에 동일한 입력값을 주입하고 동일한 출력값이 산출되는 지 확인하는 테스팅 방법이다. Back-to-Back Testing 수행 시 Test case 설계가 필요한데, Test case의 분량과 테스팅 종료기준에 대해서 아직 확립이 되어 있지 않다. 이제 본 논문에서는 MC/DC(Modified Condition/Decision Coverage) 개념을 이용하여 Test case 분량과 테스팅 종료 기준에 대해서 제시하고, 이를 적용한 사례를 설명한다. 본 논문에서 제시한 Test case 설계 기준을 적용하면, 제한적인 테스팅 일정과 인력을 만족하고, 기능 일치를 확인할 수 있는 충분한 테스팅이 가능할 것으로 판단한다.

• Journal of the Korean Society for Railway
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• v.15 no.5
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• pp.442-446
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• 2012

This paper is a practical study on the development of SEMP template using SE & SW infrastructures. SEMP, which is a management system for systems engineers, has been developed for the LRT(Light Rail Transit) industry and has been tailored to suit domestic conditions. SE & SW infrastructures were developed to assist in creating an effective and efficient SEMP for the industry of this study. This paper proposes a method to reduce costs, manpower, and time for the LRT industry using SEMP based on SE & SW infrastructures.

• Environmental Engineering Research
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• v.24 no.3
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• pp.449-455
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• 2019

To investigate the effect of seaweed (SW) addition on anaerobic co-digestion of food waste (FW) and sewage sludge (SS), batch experiments were conducted at various substrate concentrations (2.5, 5.0, 7.5, and 10.0 g volatile solids (VS)/L) and mixing ratios ((FW or SS):SW = 100:0, 75:25, 50:50, 25:75, and 0:100 on a VS basis). The effect of SW addition on FW digestion was negligible at low substrate concentration, while it was substantial at high substrate concentrations by balancing the rate of acidogenesis and methanogenesis. At 10 g VS/L, $CH_4$ production yield was increased from 103 to $350mL\;CH_4/g$ VS by SW addition (FW:SW = 75:25). On the other hand, SW addition to SS enhanced the digestion performance at all substrate concentrations, by providing easily biodegradable organics, which promoted the hydrolysis of SS. $k_{hyd}$ (hydrolysis constant) value was increased from 0.19 to $0.28d^{-1}$ by SW addition. The calculation showed that the synergistic $CH_4$ production increment by co-digesting with SW accounted for up to 24% and 20% of total amount of $CH_4$ production in digesting FW and SS, respectively.

• Journal of Practical Engineering Education
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• v.12 no.1
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• pp.85-91
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• 2020

SW which controls IoT devices using wireless communication technology must operate without errors. In order for IoT devices to be widely used, the technical skills of engineers who design such software must be improved. Compared to designing the input / output SW of a single device, the SW Flowchart design and Java SW programming process that clearly define various input / output relations between the transmitter and the receiver are complicated. In this paper, we proposed a SW Flowchart design method for controlling IoT devices based on wireless communication. In this process, it is explained that the entire control algorithm is implemented through a problem division process. In addition, we proposed an educational method for programming the designed SW Flowchart into Java SW using Microbits, which are educational IoT devices. In the course to which this education method was applied, the results of satisfaction evaluation of students were analyzed, and the effectiveness of the IoT device control SW education method using Microbits was analyzed.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.01a
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• pp.5-6
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• 2021

교통수단으로서의 항공기 이용 고객의 증가로 인해 객실 내에서 제공되는 기내 서비스는 항공사의 경쟁력을 결정하는 중요한 요소 중 하나이다. 그러나 현재와 같이 승무원이 비행 중 기내식 등의 서비스 제공을 위해 카트를 직접적으로 이동시키며 제공하는 서비스는 여러 불편한 요소로 인해 서비스의 질을 감소시킬 수 있다. 이를 위해 본 논문에서는 카메라 센서와 초음파 센서를 이용하여 기내에서 활용 가능한 서비스용 스마트 카트를 설계한다. 설계하는 스마트 카트는 승무원의 이동에 따라 대체 거리를 측정해 사용자와의 일정 거리를 유지하는 동시에 승객의 호출 신호에 따라 승객의 자리로 자동 이동하여 서비스 제공이 가능하게 하는 것을 목표로 한다. 기내 서비스용 스마트 카트는 승무원의 노동 강도 감소와 더불어 항공기 객실 서비스의 질적 향상에 기여할 뿐만 아니라 저가 항공사의 경비 절감에도 기여할 수 있다.

• Journal of Practical Engineering Education
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• v.11 no.1
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• pp.17-23
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• 2019

In applying SW education for non-major undergraduates, we applied the physical computing lesson using Arduino. There is a case in which the basic problem-solving process teaching method based on the computational thinking was proposed in the physical computing class using Arduino. However, in educating computational thinking process, it is necessary to evaluate and educate understanding of SW structures. After understanding SW structures, it is correct SW education flow to make creative outputs by applying computational thinking process. However, there is a lack of examples of how to evaluate understanding of SW structures in the class using Arduino. In this paper, we proposed a one - semester curriculum for lectures on SW education using Arduino for non-majors. In addition, we proposed and analyzed the evaluation method of the understanding of SW structures and the evaluation problems developed in this course.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06c
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• pp.178-180
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• 2006

임베디드 시스템이 복잡해지고 Time-to-Market이 요구되면서 HW/SW 통합설계 방법론(codesign)이 제시되었다. 통합설계 과정 중, HW/SW 분할 과정은 시간 성능, 비용, 전력 등의 모든 요구사항을 만족시키기는 불가능하므로 특정 목적함수에 근거한 알고리즘을 이용하여 진행된다. 하지만 고정된 분할 알고리즘을 이용해서는 이해관계자들의 요구사항을 최대한 반영하기 어렵다. 본 논문에서는 이해관계자들의 의견을 최대한 반영하고, 이를 만족시키는 모델을 유도하기 위하여 WinWin negotiation model을 적용된 요구사항 절충을 고려한 HW/SW 분할 방법론을 제안하였다. WinWin 모델을 통해서 도출된 요구사항에 가장 적합한 목적함수를 가지는 분할 알고리즘을 선택하여 HW/SW 분할 과정을 진행하는 방법이다.

• Journal of Service Research and Studies
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• v.8 no.1
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• pp.59-72
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• 2018

In the perspective of service, it is important to institute certification process required by International Standard Organization (ISO) for software (SW) development process, since Information and Communication Technology (ICT) takes high portion of the Korean industry and its certification for SW is essential internationally for trade. In addition, the certification service provided by BPMN tools like ADONIS is absolutely necessary. In that perspective, this paper proposes a new approach to satisfy this kind of necessity. This approach provides the certification service for the safety of SW required at the international level in Korean industry. Furthermore, the approach can be applied to other domains beside the SW. In order to demonstrate the approach, this paper shows how to guarantee service design for certification of ECSS-E-40 of European Space Agency (ESA) with ADONIS. This paper focuses on specification and verification of SW in E-40, and the main requirement for the verification will be safety of the SW.