영주향토음식 콘텐츠개발을 위한 주성분분석 및 문화유산 (소수서원, 부석사) 자원의 활용 연구

최은영 ( Eun Young Choi ),안희정 ( Hui Jeong An ) 한국식품영양학회 2017 韓國食品營養學會誌 Vol.30 No.5

This study was applied to the PCA (Primary Components Analysis) for the sixteen table setting at the 2017 Yeongju local food contest. In this contest, we have developed a seonbibansang and a temple one-dish meal. As a result of the correlation analysis, the applicability and composition were 0.7980, harmony and taste were 0.7747 and easiness and composition were 0.7435. In the Primary Component Y₁, all the variables X₁…X₁₀ mean that the quality of the food had positive values greater than zero. The second Primary Component Y₂ has a large positive value while X₄, X₅, X₆, X₇, X₉ have negative values. Y₂ is a value representing the sanitation variable, and can be considered a traditional and characteristic table setting natural to the native food in Yeongju. In addition, we developed an-hyangbansang and seonmyoaecheong food content by applying PCA factors (the elements of harmony, ease and sanitation). Table setting of an-hyangbansang provided energy 61.5%, protein 20.0% and fat 18.5% and seonmyoaecheong provided energy 62.7%, protein 15.4% and fat 22.2%. This satisfied the necessary amount of caloric nutrient intake that could be provided in a meal. Especially through story-telling, a modern interpretation - or rebranding - of local and traditional foods could make these traditional food products familiar to consumers currently. The developed table setting is felt to be conductive to the possible commercialization and introduction of traditional food into the mainstream commercial food service industry.

중등학교 과학 수행평가의 평가 유형과 채점 방식 및 신뢰도 분석

이기영,안희수 한국과학교육학회 2005 한국과학교육학회지 Vol.25 No.2

본 연구에서는 중등학교 과학 수행평가가 어떤 평가 유형과 채점 방식을 사용하고 있는지 분석하였으며, 이를 토대로 일반화가능도 이론을 이용하여 과학 수행평가 점수가 얼마나 신뢰로운지 분석하였다. 연구 결과, 과학 수행평가의 유형은 크게 지필형과 과제형으로 나눌 수 있었다. 지필형으로는 중등학교 모두 응답제한형 서술형검사만을 실시하고 있었다. 과제형은 과정 평가와 결과물 평가로 나눌 수 있었다 채점 방식은 1명의 교사가 모든 서술형문항과 수행과제를 채점하거나, 2명의 교사가 수행과제를 나누어 채점하고 있었다. 그러나 2명 이상의 교사가 서술형문항을 나누거나 교차하여 채점하는 경우는 없었다. 표집된 7개 중등학교 과학 수행평가의 신뢰도 분석 결과는 다음과 같다: (1) 서술형 문항의 특성이 수행과제의 특성보다 학생들의 수행평가 점수에 미치는 영향이 더 큰 것으로 나타났다 (2) 수행과제 채점에서 채점자가 피험자를 다르게 채점하는 정도는 학교에 따라 상당한 차이가 있었다. (3) 7개 중등학교 과학 수행평가의 일반화가능도 (신뢰도)는 대부분 적정 수준인 0.80에 미치지 못하는 것으로 나타났으며, 적정 수준의 일반화가능도를 얻기 위해서는 지금보다 더 많은 수의 서술형 문항과 수행과제 그리고 채점자가 필요한 것으로 분석되었다. In this study, we questioned what assessment types and scoring methods of science performance assessment(SPA) were being used in middle and high school, and how much these SPA scores were reliable(generalizable). To answer these questions, SPA data obtained from the seven schools were classified according to assessment type and scoring method. Based upon this classification, we analyzed the reliability by applying generalizability theory. The result, from the classification of assessment type and scoring method, showed that SPA types of the seven schools were divided into two types: paper-pencil type and task type. Paper-pencil type included answer(content)-restricted essay-type test solely. Task type has two parts: process and outcome assessment. As the results of analyzing scoring methods of the seven schools, there were two cases in the way of scoring methods: one case is scoring all essay-type items and performance tasks by one teacher, the other is scoring assigned performance tasks by two teachers. But the case of scoring assigned essay-type items or the case of cross scoring by two or more teachers were not found. The findings of the reliability analysis are as follows: (1) Effect of essay-type item to SPA score was larger than that of performance task. (2) There was remarkable difference among the seven schools' interaction effect of person and rater in scoring performance tasks. (3) Most of generalizability(reliability) coefficients of SPA for the seven schools were smaller than the acceptable generalizability coefficient(0.80). Therefore, the population of statistical parameters such as number of item, task and rater, should be increased for approaching the acceptable generalizability level.

FISH법을 이용한 낙동강 상,중,하류의 세균군집 구조 분석

이영옥 ( Lee Yeong Og ),박지은 ( Park Ji Eun ),신승필 ( Sin Seung Pil ),안영희 ( An Yeong Hui ) 한국물환경학회 2003 한국물환경학회지 Vol.19 No.3

For conducting the comparative analysis of the eubacterial community structure including nitrifying bacteria at 8 sampling sites throughout the N마-Dong River, FISH(fluorescence in situ hybridization) method was employed. The total ratio of each determined eubacterial group such as α·β·γ-subclasses protebacteria and Cytophaga-Flavobacterium(CF) group to total counts stained by DAPI at each site varied 9.3∼42.5% with the highest value at uppermost part. And each ratio of determined eubacterial groups reached mostly under 10% except those of CF group(23%) at uppermost part. Futhermore, compared to lower part, upper part represented higher proportions of γ-subclass proteobacteria comprised in most of fast growing bacteria on degradable organics. Also the variations of ammonia-oxidizing bacteria ranged from 2.7×10⁴to 18.3×10⁴ cells/㎖ with the lowest value in lower part and the highest value in mid part whereas those of nitrite-oxidizing bacteria varied 5.2∼7.7×10⁴cell/㎖ without noticeable differences throughout the sites. Additionally, the ratio of nitrifying bacteria to total counts ranged from 1.3% to 13.6?%, regardless of those of ammonia/nitrite-oxidizing bacteria. Overall, it implies that the upper part of Nak-Dong River represented comparatively better degradabilities of organic materials than their Lower part except at one site in upper part passed An-Dong City. By the contrast, the other part of Nak-Dong River, especially after merging the Gum-Ho River revealed lower detectability of FISH resulted from their cellular activity. So it could be said that the lower part of Nak-Dong River might be a ecosystem of which physico-chemical environment may have inhibited the activities of bacteria functioned as decomposer of organic matter.

RTK GPS를 이용한 오픈소스 아두파일럿 기반 OmniX 보트의 자율주행 경로 추적성에 관한 연구

안남현,구본국,박희승,장호윤,An, Nam-Hyun,Gu, Bon-Kuk,Park, Hui-Seung,Jang, Ho-Yun 해양환경안전학회 2021 해양환경안전학회지 Vol.27 No.6

The IoT (Internet of Things) technology is rapidly becoming an important consideration in many engineering fields in the current 4th industrial era. In recent years, the concepts of digital shipbuilding and smart factories have been adopted as trends in shipyards. However, there is active interest in research on implementing autonomous driving in autonomous vehicles and airplanes, which is currently available in commercial form in a limited capacity. The present study is regarding the path-tracking performance of a boat to accomplish an autonomous driving mission using a flight controller (FC) and real-time kinematic (RTK) global positioning system (GPS) based on an open-source Ardupilot; an actual sea test is also performed using this system on a calm lake. The boat's mission is to evaluate the maneuverability of the self-driving process to a specific point and returning to the home position. For a given speed, the difference between the preset mission trajectory and actual operational trajectory was analyzed, and a series of studies were conducted on the applicability of the system to ships. In addition, the movements and maneuverability of the OmniX-type hull with four propellers were investigated, and the driving path-tracking performance was observed to increase by a maximum of 48%. 4차 산업시대를 맞이하여 많은 공학 분야에서 IoT(Internet of Things)기술의 연계는 매우 중요한 쟁점이다. 최근 조선소에서도 디지털 조선, 스마트 팩토리 등의 개념을 구체화하고 있는 추세이다. 한편 자동차, 비행기 등에서 자율주행을 구현하는 연구는 매우 활발하고 일정 부분 상용의 형태로 나타나고 있다. 본 연구는 오픈 소스 아두파일럿 기반의 FC(Flight Controller) 및 RTK(Real Time Kinematic) GPS(Global Positioning System)를 이용하여 자율 주행 임무를 수행하는 보트의 주행성에 관한 연구로서 잔잔한 호수에서 실해역 실험을 수행하였으며 보트의 임무는 특정한 지점을 자율주행한 후 홈 위치로 스스로 돌아오는 과정에 대한 조종성 평가이다. 주어진 속도에서 기설정된 임무 궤적과 실 운항 궤적에 따른 차이를 분석하고 시스템의 보트 적용성에 대한 일련의 연구를 수행하였다. 또한 4개의 프로펠러를 가지는 OmniX 선체의 주행성을 분석하였으며 최대 48%의 주행 추적성 향상을 확인하였다.

An Energy Harvesting Aware Routing Algorithm for Hierarchical Clustering Wireless Sensor Networks

( Chaowei Tang ),( Qian Tan ),( Yanni Han ),( Wei An ),( Haibo Li ),( Hui Tang ) 한국인터넷정보학회 2016 KSII Transactions on Internet and Information Syst Vol.10 No.2

Recently, energy harvesting technology has been integrated into wireless sensor networks to ameliorate the nodes` energy limitation problem. In theory, the wireless sensor node equipped with an energy harvesting module can work permanently until hardware failures happen. However, due to the change of power supply, the traditional hierarchical network routing protocol can not be effectively adopted in energy harvesting wireless sensor networks. In this paper, we improve the Low-Energy Adaptive Clustering Hierarchy (LEACH) protocol to make it suitable for the energy harvesting wireless sensor networks. Specifically, the cluster heads are selected according to the estimation of nodes` harvested energy and consumed energy. Preference is given to the nodes with high harvested energy while taking the energy consumption rate into account. The utilization of harvested energy is mathematically formulated as a max-min optimization problem which maximizes the minimum energy conservation of each node. We have proved that maximizing the minimum energy conservation is an NP-hard problem theoretically. Thus, a polynomial time algorithm has been proposed to derive the near-optimal performance. Extensive simulation results show that our proposed routing scheme outperforms previous works in terms of energy conservation and balanced distribution.

Promotion of Human Mesenchymal Stem Cell Differentiation on Bioresorbable Polycaprolactone/Biphasic Calcium Phosphate Composite Scaffolds for Bone Tissue Engineering

Shin, Young Min,Park, Jong-Seok,Jeong, Sung In,An, Sung-Jun,Gwon, Hui-Jeong,Lim, Youn-Mook,Nho, Young-Chang,Kim, Chong-Yeal 한국생물공학회 2014 Biotechnology and Bioprocess Engineering Vol.19 No.2

An artificial construct mimicking the intrinsic properties of the natural extracellular matrix in bones has been considered an ideal platform for bone tissue engineering, as it can present an appropriate microenvironment and regulate cell behaviours. In this report, we introduce biodegradable composite scaffolds consisting of polycaprolactone (PCL) and biphasic calcium phosphate (BCP). The scaffolds were fabricated by a salt-leaching process, and the ability of the scaffolds to facilitate osteogenic differentiation was investigated using human mesenchymal stem cells (hMSCs). The scaffolds had an inter-connected porous structure with quadrilateral pores of approximately $200{\sim}500{\mu}m$ in width. The mechanical properties of the scaffolds changed as the BCP content was increased in the starting mixture. In the hMSC experiment, although we found that hMSCs adhered to the surface, as well as the inside, of the scaffolds, the incorporated BCP did not increase the proliferation of the hMSCs over 7 days in culture. Interestingly, the alkaline phosphatase (ALP) activity was 4 times higher on the PCL/BCP composite scaffold ($0.12{\pm}0.03nmol/min/{\mu}g$ protein) thanon the PCL scaffold ($0.03{\pm}0.01nmol/min/{\mu}g$ protein), suggesting that BCP can aid in generating a local environment that promotes bone regeneration. Therefore, a strategy combining polymers and ceramics can be considered a useful platform for bone tissue engineering.

3′-UTR Polymorphisms in the Vascular Endothelial Growth Factor Gene (VEGF) Contribute to Susceptibility to Recurrent Pregnancy Loss (RPL)

An, Hui Jeong,Kim, Ji Hyang,Ahn, Eun Hee,Kim, Young Ran,Kim, Jung Oh,Park, Han Sung,Ryu, Chang Soo,Kim, Eun-Gyo,Cho, Sung Hwan,Lee, Woo Sik,Kim, Nam Keun MDPI AG 2019 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.20 No.13

<P>Numerous studies have examined the genetic association of vascular endothelial growth factor (VEGF) single nucleotide polymorphisms (SNPs) with recurrent pregnancy loss (RPL). However, of the four known SNPs in the 3′-untranslated region (3′-UTR) of VEGF, three SNPs-namely rs3025040 (1451C>T), rs10434 (1612G>A), and rs3025053 (1725G>A)-remain poorly characterized with regard to RPL. Herein, we evaluated the association between these three SNPs in the VEGF 3′-UTR and RPL susceptibility. We analyzed VEGF 3′-UTR gene variants in with and without RPL using TaqMan allelic discrimination. There were significant differences in the genotype frequencies of 1612G>A (GA: adjusted odds ratio (AOR), 0.652; 95% confidence interval (CI), 0.447-0.951; p = 0.026) and 1725G>A (GA: AOR, 0.503; 95% CI, 0.229-0.848; p = 0.010) in RPL patients vs. controls. Our results indicate that the 1612G>A and 1725G>A polymorphisms in the 3′-UTR of VEGF are associated with RPL susceptibility in Korean women. These data suggest that VEGF 3′-UTR polymorphisms may be utilized as biomarkers for the detection of RPL risk and prevention.</P>

Numerical Modelling Of The Coastal Upwelling Near The Poleward Edge Of The Western Boundary Current

An, Hui Soo The Korean Society of Oceanography 1981 韓國海洋學會誌 Vol.16 No.1

A numerical experiment is made in order to clarify the mechanism of the upwelling phenomenon along the coast near the poleward edge of the western boundary current. The possibility of the upwelling is suggested from the analysis of the observational data in the east of Honshu, Japan, and in the south eastern coast of Korean Peninsula. This upwelling phenomenon is very deep and can be traced to the bottom layer. The upwelling phenomenon seems to be a general oceanic feature which characterizes the region along the west coast near the poleward edge of the western boundary current. This experiment is simulating the oceanic condition of the transition region between Kuroshio front and the Oyashio front in the east of Honshu, Japan. The possible explanations of the causes of the upwelling are as follows;In the interior of the modeled ocean the cold heavy water supplied from the north and the warm light water from the south make the north-south gradient of the pressure field and accelerate the eastward current to produce the h-orizontal divergence feld near the west coast. The divergence is compensated by the upwelling near the separation region. Another one is that the upwell-ed cold water strengthen constantly the pressure gradient which is balanced by the northward current and is weakened by the horizontal diffusion.

Characterization of PVA/glycerin hydrogels using γ-irradiation for advanced wound dressings

Hui-Jeong Gwon,Youn-Mook Lim,Sung-Jun An,Min-Ho Youn,Seol-Hee Han,장호남,Young-Chang Nho 한국화학공학회 2009 Korean Journal of Chemical Engineering Vol.26 No.6

The aim of this study was to investigate the enhanced absorption property of PVA/Glycerin (PVA/Gly) hydrogel for advanced wound dressing. A simple crosslinking method was introduced to prepare the PVA/Gly hydrogels with the use of γ-irradiation. An absorption ratio and thermal properties of the PVA/Gly hydrogels can be controlled by varying the irradiation dose and weight ratio of the PVA/Gly. When the PVA/Gly content was 20/5 wt% and the irradiation dose at 25 kGy, the PVA/Gly hydrogels showed excellent absorption properties (>350%). These results imply that the PVA/Gly hydrogel is highly absorbent and converts wound exudates to the hydrogel matrices that create a moist and clean environment in the wound healing process. Therefore, the PVA/Gly hydrogel prepared by this method can be used as an advanced wound dressing.

Preparation and Characterization of Resorbable Bacterial Cellulose Membranes Treated by Electron Beam Irradiation for Guided Bone Regeneration

An, Sung-Jun,Lee, So-Hyoun,Huh, Jung-Bo,Jeong, Sung In,Park, Jong-Seok,Gwon, Hui-Jeong,Kang, Eun-Sook,Jeong, Chang-Mo,Lim, Youn-Mook MDPI 2017 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.18 No.11

<P>Bacterial cellulose (BC) is an excellent biomaterial with many medical applications. In this study, resorbable BC membranes were prepared for guided bone regeneration (GBR) using an irradiation technique for applications in the dental field. Electron beam irradiation (EI) increases biodegradation by severing the glucose bonds of BC. BC membranes irradiated at 100 kGy or 300 kGy were used to determine optimal electron beam doses. Electron beam irradiated BC membranes (EI-BCMs) were evaluated by scanning electron microscopy (SEM), attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, thermal gravimetric analysis (TGA), and using wet tensile strength measurements. In addition, in vitro cell studies were conducted in order to confirm the cytocompatibility of EI-BCMs. Cell viabilities of NIH3T3 cells on 100k and 300k EI-BCMs (100 kGy and 300 kGy irradiated BC membranes) were significantly greater than on NI-BCMs after 3 and 7 days (<I>p</I> < 0.05). Bone regeneration by EI-BCMs and their biodegradabilities were also evaluated using in vivo rat calvarial defect models for 4 and 8 weeks. Histometric results showed 100k EI-BCMs exhibited significantly larger new bone area (NBA; %) than 300k EI-BCMs at 8 weeks after implantation (<I>p</I> < 0.05). Mechanical, chemical, and biological analyses showed EI-BCMs effectively interacted with cells and promoted bone regeneration.</P>