• Food Science and Biotechnology
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• 제15권1호
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• pp.133-137
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• 2006

Wheat gluten-chitosan composite film (WGCCF) can prevent moisture migration and enhance the antimicrobial properties of gluten in intermediate-moisture foods like sandwiches. To mimic the structure of actual sandwich-type products we developed multi-layer food models, where moisture content and water activity differ. Water activity gradients direct moisture migration and therefore determine product characteristics and product stability. A 10% wheat gluten film-forming solution was mixed with chitosan film-forming solution (0-3%, w/w) and evaporated to generate WGCCF. Addition of 3% chitosan enhanced the mechanical properties of the film composite, lowered its water vapor permeability, and improved its ability to protect against both, Streptococcus faecalis and Escherichia coli, in a 24 hr sandwich test (reduction of 1.3 and 2.7 log cycles, respectively, compared to controls). Best barrier and antimicrobial performance was found for 3% chitosan WGCCF at pH 5.1. Film of this type may find application as barrier film for intermediate-moisture foods.

• 대한간호학회지
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• 제29권1호
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• pp.21-33
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• 1999

This study was designed to develop a basic plan for computerization of nursing records. The subjects were 7 nursing record forms, 58 charts, 23 nurses, 2 nurse managers, a nurse and computer specialist, 16 master course students and 3 professors. Data collection was conducted through questionnaire, observation and interview. The collected data were analyzed for problems, plan of improvement and needs for computerization. Based upon these results, it is recommended that nursing record computerization was needed a basic plan to integrate needs of nursing record computerization. The basic plan as fellows : 1. To illustrate a data flow path of nursing record and data dictionary that show nurse's work and record process. 2. To establish a system in order to use multi -tasking and graphic user interface. 3. To establish hardware and software in order to embody integrated management of computer based system through structured walkthrough. 4. To choose effective database management system and to achieve Log as record unit.

• 제어로봇시스템학회논문지
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• 제16권5호
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• pp.498-509
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• 2010

In this paper, a waypoint guidance law Line Tracking algorithm is designed for testing an Unmanned Airship. In order to verify, we develop an autonomous flight control and test system of unmanned airship. The flight test system is composed FCC (Flight Control Computer), GCS (Ground Control System), Autopilot & Guidance program, GUI (Graphic User Interface) based analysis program, and Test Log Sheet for the management of flight test data. It contains flight test results of single-path & multi-path following, one point continuation turn, LOS guidance, and safe mode for emergency.

• 한국데이터정보과학회:학술대회논문집
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• 한국데이터정보과학회 2001년도 추계학술대회
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• pp.25-33
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• 2001

본 논문은 개체의 반응에 영향을 미치는 독립변수들중 일부는 고정요인들이고 일부는 확률요인들로 간주되며 반응연수가 다가범주를 갖는 명목형 변수일때, 다원분류표에서 자료를 분석하기 위한 모형으로 혼합효과 모형을 제시하고 모형내 미지모수들을 추정하는 방법을 다루고 있다.

• Journal of Information Processing Systems
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• 제17권4호
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• pp.675-689
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• 2021

Nowadays, cloud computing is being adopted for more organizations. However, since cloud computing has a virtualized, volatile, scalable and multi-tenancy distributed nature, it is challenging task to perform attack detection in the cloud following conventional processes. This work proposes a solution which aims to collect web server logs by using Flume and filter them through Spark Streaming in order to only consider suspicious data or data related to denial-of-service attacks and reduce the data that will be stored in Hadoop Distributed File System for posterior analysis with the frequent pattern (FP)-Growth algorithm. With the proposed system, we can address some of the difficulties in security for cloud environment, facilitating the data collection, reducing detection time and consequently enabling an almost real-time attack detection.

• International Journal of Knowledge Content Development & Technology
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• 제11권1호
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• pp.85-111
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• 2021

This study aims to analyze users' assessment of electronic libraries in the mobile app market and promote service improvement based on this. To this end, the basic background and purpose of the research, research method, and research scope were first set, and the relevant literature and empirical prior studies were analyzed. Next, users' evaluations of electronic libraries were collected and analyzed from Google Play Store. Based on the results analyzed, measures to improve the quality of electronic libraries were discussed. Based on the results of the study, the following improvement measures are proposed. Need for systemic improvement and stabilization. Provision of applications suitable for multi-device environments. Resumption of services after systematic inspection after updating. Simplification of sign up, log in, and authentication procedures. User support through real-time chat. Introduction of a detailed assessment of reviews. Provision of guidance and user manual for electronic libraries. Improvements to expand user convenience, and Securing differentiation from other similar services.

• 천문학회보
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• 제44권2호
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• pp.77.1-77.1
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• 2019

We present the results of the merger fraction evolution for galaxies in NEP-Wide field depending on star formation mode and redshift. We select the galaxies which have AKARI 9 ㎛ detections as a sample for large number of galaxies. We use multi-wavelength data from GALEX to Herschel, and Subaru HSC i-band images for analysis. We classify the merger galaxies with using Gini and M20, which are non-parametric calculated by statmorph code. We obtain the total infrared luminosity from the SED modeling with using one band, AKARI 9 ㎛. We find that the merger fractions of galaxies in all different star formation mode increase as the redshift increases. However, with fixed mass range of 10.5 < log(M🞵) < 11.5, the merger fractions of starbursts significantly increase as the redshift increases compared to those of main sequence and quiescent galaxies. We discuss the implications of these results in this poster.

• 대한전자공학회논문지
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• 제24권2호
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• pp.338-346
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• 1987

This paper describes a method for verifying whether a given geometrical layout correcdtly reflects the original logic level description. The logic description extracted from layout data was directly compadred with the original logic diagram generated at logic level design stage where the logic diagram is represented as a weighted multi-place graph. The comparison is based on graph isomorphism and error messages(error categories and locations)are invoked if any difference is found between the two logic descriptions. An efficient partitioning algorithm which consists of two steps, candidate selection and equal weight partitioning procedure, enables the entire verification process to occur in O(n log n) time.

• 한국ITS학회 논문지
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• 제9권2호
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• pp.60-67
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• 2010

최근에, LED를 사용한 WPAN 응용 기술에 많은 연구가 진행되고 있다. 하지만, LED를 이용한 가시광 통신은 통신을 수행하는데 약점을 가지고 있다. 시스템 성능을 저하시키는 요인으로 통신 환경에서 다른 물체에 의한 전파 지연으로 발생하는 다중 경로 페이딩을 들 수 있다. 따라서 본 논문에서 OFDM 기술은 다중 경로 페이딩과 분산을 줄이고, 고속 데이터 전송을 제공하기 위해서 적용하였다. 게다가, 광잡음에 의한 정보 손실을 줄이기 위해서 채널코딩으로써 터보 부호화 기술을 사용하였다. OFDM과 터보 부호화를 적용하므로써, 약 4 [dB] 정도의 성능향상을 보임을 알 수 있었다. 또한, 도플러 효과가 일어난다고 가정하였을 경우, 시스템 성능이 저하됨을 시뮬레이션을 통해 알 수 있었다.

• 한국항행학회논문지
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• 제8권1호
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• pp.73-80
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• 2004

기존의 통신 시스템은 일반적으로 Line-of-Sight (LOS)가 없을 경우 레일레이 분포를 따르는 진폭 특성을 갖는다. 그러나 Wireless Personal Area Network (WPAN)을 위하여 IEEE 802.15.3a 의 표준안으로 제안된 Ultra Wideband (UWB) Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) 시스템의 경우에는, 측정결과 클러스터와 클러스터 내의 레이의 진폭 특성이 독립적으로 로그노말 분포로 해석될 수 있음이 밝혀졌다. 이를 기반으로 기존의 Saleh-Valenzuela 채널 모델의 수정을 통하여 MB-OFDM 시스템의 채널을 모델링 할 수 있다. 본 논문에서는 RF 주파수 호핑을 위하여 MB-OFDM 시스템의 채널 모델을 성형, 각 채널 모드에 따른 성능 및 전송률에 따른 성능을 확인한다.