• International Journal of Internet, Broadcasting and Communication
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• 제16권1호
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• pp.124-131
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• 2024

Breast cancer classification using ultrasound, while widely employed, faces challenges due to its relatively low predictive value arising from significant overlap in characteristics between benign and malignant lesions, as well as operator-dependency. To alleviate these challenges and reduce dependency on radiologist interpretation, the implementation of automatic breast cancer classification in ultrasound image can be helpful. To deal with this problem, we propose a semi-supervised deep learning framework for breast cancer classification. In the proposed method, we could achieve reasonable performance utilizing less than 50% of the training data for supervised learning in comparison to when we utilized a 100% labeled dataset for training. Though it requires more modification, this methodology may be able to alleviate the time-consuming annotation burden on radiologists by reducing the number of annotation, contributing to a more efficient and effective breast cancer detection process in ultrasound images.

• 유통과학연구
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• 제22권4호
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• pp.47-58
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• 2024

Purpose: Achieving organizational effectiveness is the ultimate goal that every business entity or institution targets. To achieve this, organizations need to consider various factors that have an impact on their performance. This article analyzes the distribution influence of six main elements that have a central role in shaping sustainable organizational effectiveness, which are organizational culture, job satisfaction, interpersonal communication, talent management, knowledge management, and information technology. Research Design Data and Methodology: This research uses a quantitative approach, focusing on manufacturing companies located in Surabaya as the main object, involving twenty manufacturing companies as research targets, and 10 employees in each company. The sample selection process was carried out through the application of random sampling techniques. The analysis in this research uses the multiple linear regression method and uses SPSS version 26 software. Results: Distribution of six major factors used in this research are related to each other and contribute significantly to overall organizational effectiveness. Conclusion: Organizations that can combine the distribution of a positive culture, prioritize employee satisfaction, encourage effective communication, manage talent and knowledge efficiently, and utilize information technology wisely will have greater potential to achieve their goals and survive in the intensely competitive business environment.

• 한국정보전자통신기술학회논문지
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• 제8권4호
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• pp.249-256
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• 2015

디지털 영상에서 그림자는 영산 분석에 부정적인 영향을 미칠 수 있기 때문에 효과적으로 이동물체 검출 및 추적을 위해서는 그림자 제거가 필수적인 전처리 과정이다. 본 논문에서는 색도 영상, 밝기 변화 및 이동물체의 그림자 방향 특성을 이용해 그림자를 제거하는 알고리즘을 제안하였다. 제안하는 방법은 크게 두 단계로 구성이 되며, 첫 번째 단계로 현재 영상의 색도와 밝기 변화를 이용해 그림자 후보 영역을 제거하고, 두 번째 단계에서 이동물체의 최하위 화소 위치를 구하여그림자의 방향에 해당하는 그림자를 제거하였다. 그림자는 이동물체의 아래 영역에 위치하기 때문에 이동물체의 최하위 화소와 그림자의 방향을 알면 그림자를 제거할 수 있다. 실험 결과, 실제 이동물체 영역과 그림자 영역의 분리가 효과적으로 이루어졌으며, 이동물체 검출 및 추적 성능이 향상되었다.

• 제어로봇시스템학회논문지
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• 제14권3호
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• pp.284-294
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• 2008

In this paper, we describe an implementation of small mobile robot that can be used at research and application of mobile sensor networking. This robot that will constitute the sensor network, as a platform of multi-robot system for each to be used as sensor node, has to satisfy restrictions in many aspects in order to perform sensing, communication protocol, and application algorithms. First, the platform must be designed with a robust structure and low power consumption since its maintenance after deployment is difficult. Second, it must have flexibility and modularity to be used effectively in any structure so that it can be used in various applications. Third, it must support the technique of wireless network for ubiquitous computing environment. At last, to let many nodes be scattered, it must be cost-effective and small. Considering the above restrictions of the mobile platform for sensor network, we designed and implemented robots control the current of actuator by using additional circuit for power efficiency. And we chose MSP430 as MCU, CC2420 as RF transceiver, and etc, that have the strength in the aspect of power. For flexibility and modularity, the platform has expansion ports. The results of experiments are described to show that this robot can act as sensor node by RF communication process with Zigbee standard protocol, execute the navigation process with simple obstacle avoidance and the moving action with RSSI(Received Signal Strength Indicator), operate at low-power, and be made with approx. $100.

• 대한전자공학회논문지SD
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• 제45권7호
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• pp.23-31
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• 2008

중수소 처리된 3 nm 두께의 게이트 산화막을 갖는 MOSFET를 제조하여 정전압 스트레스 동안의 게이트 산화막의 열화를 조사하였다. 중수소 처리는 열처리와 이온 주입법을 사용하여 각각 이루어졌다. 열처리 공정을 통해서는 게이트 산화막내 중수소의 농도를 조절하기가 힘들었다. 게이트 산화막내에 존재하는 과잉 중수소 결합은 열화를 가속시키기 때문에, 열처리 공정을 행한 소자에서 신뢰성이 표준공정에 의한 소자에 비해 저하되고 있음을 확인하였다. 그러나 중수소 이온 주입 방법을 통해서는 소자의 신뢰성이 개선됨을 확인하였다. 스트레스에 의한 게이트 누설 전류 변화 및 구동 특성 변화는 게이트 산화막내의 중수소 농도와 관련이 있으며, 이러한 특성은 적절한 공정 조건을 갖는 이온 주입법을 통해 개선할 수 있었다. 특히, 큰 스트레스 전압의 PMOSFET에서 중수소의 효과가 뚜렷하게 나타났으며, 이는 "hot" 정공과 중수소의 반응과 관련이 있는 것으로 판단된다.

• 한국인터넷방송통신학회논문지
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• 제20권3호
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• pp.37-41
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• 2020

본 논문에서는 도시 내부의 통신 인프라가 파괴된 환경에서 DTN(Delay-Tolerant Network) 노드 간 메시지 전송 효율을 향상시키기 위한 라우팅 방법을 제안하였다. 또한 일정 규모의 통신 인프라가 기능을 할 수 없는 상황에서 향상된 노드 간 메시지 전송 과정을 설명하였다. 노드 간 신뢰성 향상을 위한 효과적인 라우팅 방법을 제안하고 DTN 시뮬레이터를 이용하여 평가하였다. 통신 인프라의 파괴로 인한 불확실한 경로 상에서 노드 간 메시지 전송 관계를 고려하여 도시 지역에서 신뢰성이 개선된 라우팅 알고리즘을 시뮬레이션으로 확인하였다. 노드가 과거에 경험한 모든 접촉 정보를 포함하는 라우팅 알고리즘을 사용하여 통신 인프라가 파괴된 상황의 메시지를 전달 시뮬레이션에서 기존 라우팅 알고리즘 보다 비교적 좋은 결과를 얻을 수 있었다.

• Journal of Information Science Theory and Practice
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• 제9권4호
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• pp.50-62
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• 2021

This study aims to unravel the shift in the customary method of disseminating information about the ritual of Perang Topat (literally translated as "rice-cake war") as carried out by the custom community of Kemaliq Lingsar in the West Lombok Regency of Indonesia during the COVID-19 pandemic. Grounded in the ethnography of communication research methodology, this study examines the process of the cultural ritual during the 2020 period of the pandemic and compares it to the ones held in 2018 and 2019 (before the current pandemic). Drawing on findings from observations, in-depth interviews, and documentation, it was revealed that the traditional or custom-oriented community of Kemaliq Lingsar abandoned all three prominently used methods of disseminating the information of the Perang Topat ritual that had been used prior to the pandemic, and that they were replaced by a strategy with solely face-to-face (FTF) interpersonal communication carried out by visiting the homes of the target participants of the cultural event. This method was relevant to the current viral crisis because it enabled the committee to minimize the number of spectators which might potentially violate COVID-19 health protocols. This finding also reinforces the hypothetical statement that interpersonal communication via FTF is effective in disseminating information in a limited manner and empowering the emotional bond between the individuals who share relationships and similar interests. The findings of the present study can be a reference for any events where physical distancing must be strictly imposed and require a limit to the number of participants during the pandemic.

• 환경영향평가
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• 제1권1호
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• pp.41-50
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• 1992

To prevent unwanted visual impacts of proposed projects before they are actually built, Visual Impact Assessment(VIA) is conducted in current landscape planning and management process. The application of VIA to actual projects raises some important questions: "What views will the project affect?" "What tools and techniques are effective for predicting and portraying future landscape conditions?" "Who should determine the value of the impacts?" and "How can the impacts be measured?" Types and levels of visual impacts should be decided through analyzing both the existing landscape and the proposed project. Computer-based visual simulations will play a pivotal role as effective prediction and communication tools. With professionals' assistance, the public participation in the VIA process will produce meaningful solutions for planning and managing the future landscape. Also, the use of a proper response format and sensitive assessment criteria in measuring the public's opinion will enrich outcomes of the assessment. Based on the methodological framework, the case study briefly explains an application of VIA to an actual project.

• 복식문화연구
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• 제14권6호
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• pp.932-944
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• 2006

With supplied computers and the development of information and communication thropugh the Internet, the space of personal home pages in potal sites has been filled with photos taken by digital cameras, and 'the introduction of privacy' done in the personal home pages has become a general trend in society. As the use of Photoshop, available to edit and modify digital photos, in this social atmosphere, has grown general, they have shown their interest in the retouching technique of Photoshop. Computer graphics, marked based on the treatment of a variety of information into pictures or a technology to mark it, recently various application methods have been found in make-up. Especially, Adobe Photoshop, used to edit and modify images, is a sofetware program proper to perform beauty make-up in correcting and creating images in an effective way. The purpose of this study is to express each factor in Adobe Photoshop CS2 about the beauty make-up. As a result, I can say, the process that digital image is retouched by Adobe Photoshop CS is similar work to beauty make-up. The process of Photoshop retouching can be used as the materials for educating of make-up and as the materials for presentation of beauty make-up trend. And also we can serve the simulation to the customer before real make-up. Therefore, this study is for the effective performance of diverse beauty makeup integrating retouch technique with Photoshop CS.

• 정보처리학회논문지:컴퓨터 및 통신 시스템
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• 제5권8호
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• pp.189-196
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• 2016

많은 기업들은 웹 취약점 관리에 어려움을 겪고 있으며, 보안 사고도 자주 발생하고 있다. 현재는 OWASP 취약점에 기반을 둔 점검도구로 검수를 진행한다. 하지만 현재의 보안 검수는 웹 애플리케이션의 잦은 변화에 현실적으로 대응하기 어려운 실정이다. 본 연구에서는 먼저 기존 취약점 수치화 연구와 검수 프로세스를 검토하였다. 이에 기반을 두어 현실적이며 필수적인 주요 취약점 제거와 능동적인 검수 프로세스에 바탕을 둔 개선된 검수 프레임워크를 제안한다.