• Journal of Korean Society for Geospatial Information Science
• /
• v.20 no.3
• /
• pp.11-18
• /
• 2012

Increasing concern about biodiversity has lead to a rise in demand on the spatial assessment of biological resources such as biodiversity assessment, protected area selection, habitat management and restoration in Korea. The purpose of this study is to create species richness map through data collection and modeling techniques for wildlife habitat assessment. The GAM (Generalized Additive Model) is easy to interpret and shows better relationship between environmental variables and a response variable than an existing overlap analysis and GLM (Generalized Linear Model). The study area delineated by a large watershed contains Jirisan national park, Mt. Baekun and Sumjin river with three kinds of protected areas (a national park, a landscape ecology protected area and an otter protected area). We collected the presence-absence data for wildlife (mammals and birds) using a stratified random sampling based on a land cover in the study area and implemented natural and socio-environmental data affecting wildlife habitats. After doing a habitat use analysis and specifying significant factors for each species, we built habitat suitability models using a presence-absence model and created habitat suitability maps for each species. Biodiversity maps were generated by taxa and all species using habitat suitability maps. Significant factors affecting each species habitat were different according to their habitat selection. Although some species like a water deer or a great tit were distributed at the low elevation, most potential habitats for mammals and birds were found at the edge of a national park boundary or near a forest around the medium elevation of a mountain range. This study will be used for a basis on biodiversity assessment and proected area selection carried out by Ministry of Environment.

• Journal of the Korean Geotechnical Society
• /
• v.33 no.12
• /
• pp.7-20
• /
• 2017

In this study, effects of grain size distribution on the shear strength and rheological properties are investigated for coarse- and fine-grained soils by using direct shear apparatus. Shear strengths are estimated for fine-grained soils with the maximum particle size of 0.075 mm and coarse-grained soils with the maximum particle size of 0.425 mm and fine contents of 17% prepared at dry and liquid limit states. The direct shear tests are conducted under the relatively slow shear velocity, which corresponds to the reactivated landslide or debris flow after collapse according to the landslide classification. In addition, for the evaluation of rheological properties, residual shear strengths for both fine- and coarsegrained soils prepared under liquid limit states are obtained by multiple reversal shear tests under three shear velocities. From the relationship between residual shear strengths and shear rates, Bingham plastic viscosity and yield stress are estimated. The direct shear tests show that cohesions of fine-grained soil are greater than those of coarse-grained soil at both dry and liquid limit states. However, internal friction angles of fine-grained soil are smaller than those of coarse-grained soil. In case of rheological parameters, the plastic viscosity and yield stress of fine-grained soils are greater than those of coarse-grained soils. This study may be effectively used for the prediction of the reactivated landslide or debris flow after collapse.

• Korean Journal of Health Education and Promotion
• /
• v.8 no.2
• /
• pp.34-51
• /
• 1991

In the research and analysis for survey practice on stability on the nutrition intake relities to an affect influence factor for variable reason to discovers dweller in cities area which is in order to prevent an unfortunately influence that thus obviously restricted by nutrition intake would be restoration. And then attempted to avhivement of stability fulfil to correct nutrition intake needed under the establish for effectiveness measured to provide the primary required resources be considerations must accomplish certain survey of goals. Therefore subject of criticism for survey was conducted during January 4 1990 to January 24 1990 through 20 days adapted place were Seoul, Taegu and Pohang cities dweller 1206 person be conducted under the expert survey personnel by directly the survey was conducted with the questional form has atapted for its survey conclusion of result be summarixed as bellow. 1) The subject of criticism for survey was ferformed to personnel adapted age group 40 to 49 were 24.9%, Age group 50 to 59 were 18.4% shows most adult group has significant higher value rate appearenced. In consideration the education level were evaluated the college grauated ; 48.8% and High School graduated: 30.1% shows that more educated level has significant higher rate value were appearenced. 2) On the subject of criticism to evaluation for adapted personnel by native place such as larger citypeople ; 29.6%, Farming and fishing village people were 28.4%, although the classfication of job analysis for estimation appearence rate were ; students 27.4%, Sales and service field personnel rate ; 15.1% and expert technique field personnel were ; 90% comprehensively appearenced. Although consideration for ecnomics situation review to the middle level shows of rate ; 61.7% and lower level was appearenced rate ; 23.9% of each others. 3) The people of resident in cities were appearenced nutrition intake has more than 2 weeks continuousely practiced by experiance rate shows ; 72% thus intake has experianced rate were 74.6% and female was 68.5% affact is comprehensively male has more many higher rate valued. In the classfication by age group 60 year old has 100% they have experiaced of nutrition intake and age group 50 to be appearenced its rate ; 76.4 % and age group 40 were 75.5% Thus result of survey for comparative rate shows in generally say more aged group has intake significant higher than younger age of group. Nevertheless, age group 10 years old be experienced of nutrition of intake rate ; 63.2% and age group 20 shows 73.9% was comparative more significant higher than age group 30 years old level adolescents.

• Journal of the Korea Society of Computer and Information
• /
• v.16 no.6
• /
• pp.143-153
• /
• 2011

The goal of Ubiquitous Sensor Network(USN) environments is to provide users high quality services based on a variety of sensors. In this environment, sensor devices, sensor nodes and sensor networks are heterogeneous and have various characteristics. Therefore it is important for interoperability to define a metadata for describing USN resources. The OGC(Open Geospatial Consortium) proposes SensorML(Sensor Model Language) as a standard language for modeling sensors. However, SensorML provides a framework for describing a processing model among sensors rather than describing information of sensors. Therefore, to describe a USN metadata is not main purposes of SensorML. This paper defines a USN metadata which describes information about sensor device, sensor node, and sensor network. Also the paper proposes a method for efficiently storing and searching the USN metadata and implements a USN metadata management system based on our method. We show that our metadata management system is reasonable for managing the USN metadata through performance evaluation. Our USN metadata keeps the interoperability in USN environments because the metadata is designed on SensorML. The USN metadata management system can be used directly for a USN middleware or USN application.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.18 no.2
• /
• pp.145-152
• /
• 2012

As the problems of global warming are brought up recently, many skillful solutions for developing new renewable energy are suggested. One of the most remarkable things is ocean energy. Korea has abundant ocean energy resources owing to geographical characteristics surrounded by sea on three sides, thus the technology of commercialization about tidal current power, wave power is demanded. Especially, Tidal energy conversion system is a means of maintaining environment naturally. Tidal current generation is a form to produce electricity by installing rotors, generators to convert a horizontal flow generated by tidal current into rotating movement. According to rotor direction, a tidal current turbine is largely distinguished between horizontal and vertical axis shape. Power capacity depends on the section size crossing a rotor and tidal current speed. We therefore investigated three dimensional flow analysis and performance evaluation using commercial ANSYS-CFX code for an 100 kW class horizontal axis turbine for low water level. Then We also studied three dimensional flow characteristics of a rotating rotor and blade surface streamlines around a rotor. As a result, We found that torque increased with TSR, the maximum torque occurred at TSR 3.77 and torque decreased even though TSR increased. Moreover we could get power coefficient 0.38 at designed flow velocity.

• Journal of the East Asian Society of Dietary Life
• /
• v.21 no.3
• /
• pp.353-359
• /
• 2011

The goal of this study was to evaluate the effects of supplementation with the needles of Pinus densiflora on the fermentation characteristics of honey wine (Pinus densiflora-honey wine). Honey without supplementation with needles of Pinus densiflora (honey wine) was included as a control. Physiochemical changes were investigated during 30 days of fermentation at $20^{\circ}C$, and following aging. At the beginning of fermentation, pH and viable cell counts of Pinus densiflora-honey wine changed rapidly, while $^{\circ}Bx$ decreased gradually. Viable yeast counts reached maximum levels at 5 to 10 days of fermentation. At day 0, the pH of Pinus densiflora-honey wine was 3.8, while the non-supplemented honey wine had a pH of 3.4. Decease in $^{\circ}Bx$ was faster in Pinus densiflora-honey wine than in non-supplemented honey wine. Supplementation of honey with needles of Pinus densiflora prior to fermentation shifted the initial pH to a more neutral pH, and the presence of Pinus densiflora needles increased the fermentation speed. The final $^{\circ}Bx$, pH, ethanol content, and total titratable acidity of Pinus densiflora-honey wine were $13.7^{\circ}Bx$, pH 3.05, 13.5%, and 0.37%, respectively. A sensory evaluation demonstrated that addition of 4% (w/v) fructose to honey wine supplemented with neddles of Pinus densiflora raised the level of product acceptability.

• Korean Journal of Poultry Science
• /
• v.40 no.3
• /
• pp.223-234
• /
• 2013

Poultry industry is abounding day by day as it engrosses less cost of investment per bird as compared to large animals. Poultry have the most copious genomic tool box amongst domestic animals for the detection of quantitative trait loci (QTL) and marker assisted selection (MAS). Use of multiple markers and least square techniques for mapping of QTL affecting quality and production traits in poultry is in vogue. Examples of genetic tests that are available to or used in industry programs are documented and classified into causative mutations (direct markers), linked markers in population-wide linkage disequilibrium (LD) with the QTL (LD markers), and linked markers in population wide equilibrium with the QTL (LE markers). Development of genome-wide SNP assays, role of 42 K, 60 K (Illumina) and 600 K (Affymetrix$^{(R)}$ Axim$^{(R)}$) SNP chip with next generation sequencing for identification of single nucleotide polymorphism (SNP) has been documented. Hybridization based, PCR based, DNA chip and sequencing based are the major segments of DNA markers which help in conducting of MAS in poultry. Economic index-marker assisted selection (EI-MAS) provides platform for simultaneous selection for production traits while giving due weightage to their marginal economic values by calculating predicted breeding value, using information on DNA markers which are normally associated with relevant QTL. Understanding of linkage equilibrium, linkage dis-equilibrium, relation between the markers and gene of interest are quite important for success of MAS. This kind of selection is the most useful tool in enhancing disease resistance by identifying candidate genes to improve the immune response. The application of marker assisted selection in selection procedures would help in improvement of economic traits in poultry.

• Korean Journal of Agricultural and Forest Meteorology
• /
• v.14 no.4
• /
• pp.143-154
• /
• 2012

As demand of water resources and attentions to changes in climate (e.g., due to ENSO) increase, long/short term prediction of precipitation is getting necessary in water planning. This research evaluated the ability of MM5 to predict precipitation in the Tampa Bay region over 23 year period from 1986 to 2008. Additionally MM5 results were statistically bias-corrected using observation data at 33 stations over the study area using CDF-mapping approach and evaluated comparing to raw results for each ENSO phase (i.e., El Ni$\tilde{n}$o and La Ni$\tilde{n}$a). The bias-corrected model results accurately reproduced the monthly mean point precipitation values. Areal average daily/monthly precipitation predictions estimated using block-kriging algorithm showed fairly high accuracy with mean error of daily precipitation, 0.8 mm and mean error of monthly precipitation, 7.1 mm. The results evaluated according to ENSO phase showed that the accuracy in model output varies with the seasons and ENSO phases. Reasons for low predictions skills and alternatives for simulation improvement are discussed. A comprehensive evaluation including sensitivity to physics schemes, boundary conditions reanalysis products and updating land use maps is suggested to enhance model performance. We believe that the outcome of this research guides to a better implementation of regional climate modeling tools in water management at regional/seasonal scale.

• The Journal of the Korea Contents Association
• /
• v.18 no.1
• /
• pp.258-267
• /
• 2018

This study attempted to do a research on whether local festivals contributed to local economic vitalization in an empirical aspect focusing on Almedalen's case of Sweden has not been discussed in Korea. For this, by analyzing Gotland's sociocultural and economic aspects into 3 steps and evaluating them, the study tried to derive policy implications for benchmarking Almedalen in Korea in the future. As a result of analyzing the economic effect of Almedalen in Sweden into 3 steps, it was shown that in the analysis of resources in Step 1, Almedalen positively affected tourist allurement based on Gotland's beautiful natural landscape. In the evaluation of operation in Step 2, according to the result of examining an increase in population and stabilization with a valuation index related to the activation of local economy, Gotland was steadily seeing a new inflow of population, due to which it can be confirmed that local income increases as various jobs are being created. Finally, as a result of examining the improvement in local image in Step 3, it was shown that as diverse members from all walks of life participated in Gotland's festival, external communication became flexible and the opportunity of social participation increased, which positively affected local image. Based on the study results, the policy implications for benchmarking Almedalen, Sweden's local festival, are as follows: First, selecting an appropriate place for attracting the participation of various people is needed. Second, local festivals should be places for communication to exchange opinions, not specific institute-oriented unilateral provision of information. Third, while advancing local festivals for nonprofit, the efforts to make positive changes in local image are needed.

• Journal of Korean Society of Environmental Engineers
• /
• v.28 no.3
• /
• pp.240-248
• /
• 2006

In this study, a retrofitting BNR process that was modified for the economical applicability was proposed and evaluated in the pilot plant($50m^3/d$). At the same time the bacterial community structure was investigated in the pilot plant by using FISH(fluorescent in situ hybridization) method. Economically 16% of the initial construction cost for the proposed process(introduction of a biological nutrient removal process of $60,000m^3/d$ scale basis) was reduced due to the absence of a bioreactor. Water treatment efficiencies and maintenance facilities of the modified process were satisfied with the strengthened discharge permits in Korea throughout a long term pilot plant operating including a winter season. Bacterial populations in the pilot plant and in the control plant(A2/O process, B SIP(Sewage Treatment Plant)) were remained uniformly during the test period, but bacterial structure in the bioreactor was changed drastically. Proportions of ${\beta}$-proteobacteria group including soil bacteria which play a important role in wastewater treatment increased $25{\sim}607%$ in population.