• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.8 no.2
• /
• pp.245-249
• /
• 2007

In this paper describes image enhancement technique using deconvolution processing for ultrasonic nondestructive testing. When flaws are detected fur B-scan or C-scan, blurring effect which is caused by the moving intervals of transducer degrades the quality of images. In addition, acquisited images suffer form speckle noise which is caused by the ultrasonic components reflected from the grain boundary of material (1,2). The deconvolution technique can restore sharp peak value or clean image from blurring signal or image. This processing is applied to C-scan image obtained from known specimen. Experimental results show that the deconvolution processing contributes to get improved the quality of C-scan images.

• Vending industry
• /
• v.8 no.3
• /
• pp.28-35
• /
• 2008

사례 1>> 요즘 점포 앞 같은 아웃도어 로케이션은 경품을 뽑은 크레인게임기 일색이다. 과거만 해도 자동판매기가 설치되었던 로케이션에서 자판기는 퇴출되고, 크레인게임기가 자리매김한 곳이 많다. 자판기가 설치되어 있는 곳 중에서도 장사도 안하고 흉물스럽게 방치된 로케이션이 많다 사례 2>> 서울에서 자판기 전문점을 운영하는 S씨. S씨 사무실에는 근무하는 사람이 달랑 3명이다. 아내가 경리 및 관리를 맡고 있고, 계약직 직원 한명이 자판기 운영관리를 담당한다. S씨는 간혹 가다 있는 실수요 판매를 진행할 정도이고, 방판 영업은 중단한지 오래이다. 과거 4년여 전만 하도 영업사원을 5명 거느리고 있었지만 시장이 죽자 방판조직을 없애 버린 것. 메이커 전문점의 간판을 걸어 놓고 한 달에 1-2대 기계를 판매하고 있을 뿐이다. 사례 3>> 기자가 취재를 위해 과거 자판기 판매 영업을 잘하기로 유명했던 모유통점 사정에게 연락을 했다. 그러나 그에게 들여오는 말은 실망스러웠다. "이제 자판기 사업은 안하는데요." 자판기 시장이 극도의 침체를 보이다 보니 자판기 영업을 포기하고, 다른 아이템 분야로 사업을 바꿨다. 위의 사례들은 우리 아웃도어 자판기들이 처한 현실을 여실히 보여 준다. 과거만 해도 아웃도어 자판기들은 방문판매 영업의 주 타깃시장으로 자판기 시장 활성화에 중추적인 역할을 했던 게 사실이다. 하지만 시장은 급격하게 몰락을 하여 비전을 잃어버린 시장이 되었다. 아웃도어 자판기들은 하나하나 사라지고 있으며, 자판기 방문판매 시장은 거의 명맥만 이어가고 있을 정도로 심각한 상황이다. 어쩌다 시장이 이렇게 되어 버린 걸까? 자판기 산업의 가장 핵심 로케이션인 아웃도어가 어쩌다가 경쟁력을 읽고 퇴출당하는 상황을 맞고 있는 것일까? 위기의 아웃도어 자판기 시장을 되살린 방법은 과연 없는 것일까?

• IEMEK Journal of Embedded Systems and Applications
• /
• v.12 no.3
• /
• pp.159-167
• /
• 2017

Software safety is a key issue in embedded system of automotive and aviation industries. Various software testing approaches have been proposed to achieve software safety like ISO26262 Part 6 in automotive environment. In spite of one of the classic and basic approaches, stack memory is hard to estimating exactly because of uncertainty of target code generated by compiler and complex nested interrupt. In this paper, we propose an approach of analyzing the maximum stack usage statically from target binary code rather than the source code that also allows nested interrupts for determining the exact stack memory size. In our approach, determining maximum stack usage is divided into three steps: data extraction from ELF file, construction of call graph, and consideration of nested interrupt configurations for determining required stack size from the ISR (Interrupt Service Routine). Experimental results of the estimation of the maximum stack usage shows proposed approach is helpful for optimizing stack memory size and checking the stability of the program in the embedded system that especially supports nested interrupts.

• The Journal of the Korea Contents Association
• /
• v.14 no.10
• /
• pp.429-437
• /
• 2014

Product promotion App is developed using an interactive video in order to overcome the existing ATL marketing limitations and to respond to target age groups and lifestyle changes. The product promotion App which is positioned as a smart care center by analyzing customer needs with the Customer Journey Map, is comprised of 3 categories such as interest, information and management reflecting media characteristics of smart mobile contents. It intends to induce viral promotions with comical and interactive alopecia simulator directly described by a specialist doctor which ensures reliability of products. In addition, it is made for customers to continuously manage the alopecia through management tools, and company can expect an effect of being used as a core tool for marketing activities by offering promotional information along with product feedbacks.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.18 no.4
• /
• pp.934-940
• /
• 2014

Recently, the emergence of a variety of devices to be able to access web have brought many technological changes in the field of web development. However some web sites are still operating with a focus on computers, especially exclusive and slow developing job training related web sites which utilize a User Interface that targets only PCs. In this paper, we propose the job training management system which has a menu configuration and functions to be applied to a variety of devices, and also an applicable technologies for training students to access more easily. Finally, we evaluated its efficiency by applying the implemented system in the actual field.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.5 no.3
• /
• pp.236-240
• /
• 2004

We have implemented image monitoring system on PXA255 processor based embedded board that is ported QT/Embedded 2.3.7 version. User is able to monitor camera's capture image for widely separated host PC at client PXA255 board target board by ethernet communication method. And we designed PCI interface card that control motor for camera's Pan & Tilt. Bitmap format's images of $320\times{240}$ size are displayed on PXA255 board's TFT-LCD and User is able to monitor wanted position's image by touch screen input method.

• Journal of the Korean Vacuum Society
• /
• v.11 no.3
• /
• pp.141-150
• /
• 2002

Titanium oxide thin films were deposited by DC reactive magnetron sputtering(RMS) with Ar ion-beam assistance using end-Hall ion source at low oxygen partial pressure and long target-to-substrate distance. The optical and structural properties of deposited films were investigated by the measurement of measured transmittance and reflectance, atomic force microscope(AFM), and X-ray diffraction(XRD). The results show that the Ax ion-beam assisted RMS for titanium oxide thin films induces the higher packing density, lower absorption, and smoother surface than the conventional RMS, suggesting that it can be employed in deposition of optical dielectric coatings.

• Convergence Security Journal
• /
• v.16 no.3_2
• /
• pp.55-63
• /
• 2016

The purpose of this study is that there viewing at the future development direction and awareness of the cultural contents industry targeting college students for the activation of the domestic cultural content industry. And we want to find the need of the security industry & Concert Hall Safety. Recent worldwide it has occurred 'Soft target' terror targeting unspecified civilian in the cultural space of theater and music venues, stadiums etc. But security and safety systems against terror in Korea are very deficient situation. US security market has increased sales significantly interest in increasing against crime and terrorism prevention and depending on the price cut and technology development. It is expected to require a security industry in a variety of applications to the cultural contents industry development about Korean pop music and theatrical performances, and internet and mobile games stc.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.18 no.6
• /
• pp.1369-1374
• /
• 2014

In case of APT attacks, the update server is being used as a means of dissemination, the update program is running malicious code or data in applications such as anti-virus signature is vulnerable to manipulation, SW Update threat identification and prevention measures are urgently required. This paper presents a natiional and international SW update structure, update process exploits and response measures to examine, Through the extraction/analysis of a domestic famous SW update log, we are willing to select the necessary component of the normal program update to identify a white list.

• Journal of the Korean Institute of Intelligent Systems
• /
• v.13 no.5
• /
• pp.530-538
• /
• 2003

Recently the needs for keeping existing customers is increasing in the field of marketing. So, the customers needs to be classified by groups and the differentiated responses to the specified customer groups are demanded. In this paper, we implemented a system that classifies the customer groups using the neural network, and classified the purchasing patterns among customer groups. Empirically examining the association rules between two groups, we could find out that similar rules exist between them. So, it is important that customers should be classified into the excellent customer group and the general group for the decision making of marketing. This paper shows that the efficiency of the differentiated marketing can be maximized by raising the correctness of the expectation in the classification of customer groups.