• 한국해양공학회지
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• 제24권1호
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• pp.47-52
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• 2010

This study presents a modified scheme for the radar image simulation of sea waves. A simulated radar image was obtained by taking into account the dot product of the directed vector from the radar and the normal vector of the sea surface. Moreover, to calculate the radar image, we used the radar received power and radar cross section. To demonstrate the effectiveness of the proposed scheme, the wave spectrum from field data was utilized to obtain the simulated sea waves. The radar image was simulated using numerically generated sea waves. The wave statistics from the simulation agrees comparatively with those of the original field data acquired by real radar measurements.

• Journal of Information Technology Applications and Management
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• 제15권1호
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• pp.67-81
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• 2008

Last decade, IT industry in Korea has been developed greatly. The game industry as an international leader has given good value added to its country. Game industry is one of the speedy improved one and it showed over 20% of growth rate from 2002. Most distressings in Game industry, there are no established costing system in spite that there should be in emerging market. In 2004, Game Contents Costing Model using Mission and Event was developed and also the study of Game Elements weight was done in 2005. The cost of Game Contents can be calculated by GEP and its unit price. The study of Game Contents Sizing Model was done in 2005. The costing of Game Contents by single Game Element which represents software which is one of 3 Game Elements-plan, graphic and software-and it is counted by mission and event. If the software element only can not well represent Game Contents volume, we can include plan and graphic elements for Game Contents costing. And we can say above two methods as a costing model of Game Contents. In this paper, these models were tested empirically and proved as usable.

• 전자공학회논문지S
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• 제34S권1호
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• pp.132-144
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• 1997

The rotation-invariant pattern recognition filter using circular harmonic function of the wavelet transforme dsreference image by morlet, mexican-hat, and haar wavelt function is proposed. The rotated reference images, the images sililar to the reference image, and the images which are added by random noise are used for the inpt images, and in case of the input images with random noise, they are applied to the recognition after removing the random noise by the transformed moving average method with proper thresholding value and window size. The proposed optical wavelet circular harmonic matched filter (WCHMF) is a type of the matche dfilter, so that it can be applied to the 4f vander lugt optical correlation system. SNR and discrimination capability of the proposed filter are compared with those of the conventional HF, the POCHF, and the BPOCHF. The proper wavelet function for the reference image used in this paper is achieved by applying morlet, mexican-hat, and harr wavelet function ot the proposed filter, and the proposed filter has good SNR and discrimination capability with rotation-invariance in case of the morlet wavelet function.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1998년도 추계학술대회논문집:21세기에 대비한 지능형 통합항만관리
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• pp.241-253
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• 1998

By the rapid expansion of containerization and intermodel transportation in international shipping since the 1970's, the larger containerships have emerged and concentrated their calls at a limitted number of ports. Moreover, large-scale container terminals have been built to accommodate the ever-larger containerships, and the mordernization of terminal facilities and many developments in information technology etc. have been brought out. Thus, unlimited competition has been imposed on every terminal with neighbouring ports in Japan, Singapore, Hongkong and Taiwan etc. The purpose of this study is invested to suggest how the container terminal operators cope with unlimited competition between local or foreign terminals. The results are suggested as follows : First, transshipment cargoes, which the added value is high, is to be induced. Second, the function of storage is given on On-Dock Yard. Third. Berth Pool Operation System is introduced, especially in Gamman Container Terminal and Kwangyang Container Terminal. Fourth, the cargo handling charges is decided by terminal operator.

• 한국GIS학회:학술대회논문집
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• 한국GIS학회 2003년도 공동 춘계학술대회 논문집
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• pp.291-296
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• 2003

This study estimated surface temperature by using split-window technique and NOAA/AVHRR data was used. For surface monitoring, cloud masking procedure was carried out using threshold algorithm. The daily maximum air temperature is estimated by multiple regression method using independent variables such as satellite-derived surface temperature, EDD, and latitude. When the EDD data added, the highest correlation shown. This indicates that EDD data is the necessary element for estimation of the daily maximum air temperature. We derived correlation and experience equation by three approaching method to estimate daily maximum air temperature. 1) non-considering landcover method as season, 2) considering landcover method as season, and 3) just method as landcover. The last approaching method shows the highest correlation. So cross-validation procedure was used in third method for validation of the estimated value. For all landcover type 5, the results using the cross-validation procedure show reasonable agreement with measured values(slope=0.97, intercept=-0.30, R$^2$=0.84, RMSE=4.24$^{\circ}C$). Also, for all landcover type 7, the results using the cross-validation procedure show reasonable agreement with measured values(slope=0.993, Intercept=0.062, R$^2$=0.84, RMSE=4.43$^{\circ}C$).

• 전자공학회논문지D
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• 제35D권2호
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• pp.33-39
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• 1998

A six-beam accelerometer with self-compensated off-axis sensitivity was fabricated onthe selectively diffused (111)-oriented n/n$^{+}$/n silicon substrates by a unique porous silicon micromachining technique, which has self-stip characteristics and highly seletive formation of porous silicon layer during anodic reaction. Also, the characteristics of the fabricated accelerometer were investigated. The sensitivity of the acceleormeter added up outputs of three bridges through a summing circuit was 0.68 mV/g and the nonlinearity was less than 2% of the full scale output. The measured first resonant frequency was 4.236 kHz. When the outputs of three bridges were compared to summing output of bridges obtained through summing circuit, the normal output for Z-axis acceleration exhibited the same value s summing outputs of three bridges without reduction of sensitivity and thus the sensitivity decrease due to additional beam was compensated. Although a maximum off-axis sensitivity in one bridge of the accelerometer showed 17% of normal sensitivity, the off axis sensitivity obtained from summing output of three bridges decreased to 1.0%. Therefore, the self-elimination of off-axis sensitivity can be simply realized by obtaining the output of the sensor through summing circuit.t.

• 복식
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• 제59권4호
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• pp.54-66
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• 2009

An empirical study was conducted on fashion cultural products with Korean image, targeting Korean and American consumers. Its purpose was to identify Korean and English consumers' attitude and purchase intention and to compare difference of its influence factor toward fashion cultural products of which design sources were derived from the Korean culture. The quantitative research using on-line questionnaires was targeted at American and Korean consumers. A total of 400 responses were used in the analysis. Results of data analyses using SPSS 13.0, are as following. First, for American consumers, uniqueness-seeking had a positive effect on attitude toward of cultural product with Korean image, followed by service of salespersons, change-seeking, and appearance of salespersons. For Korean consumers, easy accessibility was significantly related to attitude. Second, for American consumers, uniqueness-seeking and appearance of salespersons had a significant influence on the purchase intention of the cultural product with Korean image. For Korean consumers, no attributes were related to purchase intention. This research about fashion cultural products that will compete in the global market presents exploratory information targeting domestic and foreign consumers and will contribute to the strategic aspect of newly growing high-added-value industries.

• 한국항해항만학회지
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• 제35권8호
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• pp.649-656
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• 2011

본 연구는 해양레저 수요가 급증하면서 마리나산업이 미래형 고부가가치 산업으로 부상하고 있는 현 시점에서 마리나 이용객 측면에서 마리나 서비스품질을 측정할 수 있는 도구를 개발하는데 그 목적이 있다. 연구 결과 마리나 서비스품질 척도로서 물리적시설, 지원서비스, 활동프로그램, 종업원태도, 안전성 등 5개 차원이 도출되었고, 신뢰성과 타당성이 검증된 20개 측정항목이 제시되었다. 본 연구에 의하여 개발된 척도는 마리나 서비스품질을 측정하는 중요한 도구가 될 뿐만 아니라 마리나 서비스품질 관리에 기여하고 마리나의 마케팅 전략 수립에 유용한 정보를 제공한다.

• 문화기술의 융합
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• 제1권4호
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• pp.71-77
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• 2015

최근 IT분야 기술에 대한 연구와 개발이 활발하게 이루어지고 있으며 이러한 혁신 기술에 대한 거래와 기술 사업화를 위한 활동이 본격적으로 활성화되면서 혁신 IT 기술의 이전이나 거래를 위한 체계적인 기술가치평가에 대한 관심이 높아지고 있다. 왜냐하면 혁신 기술이 그 효용성을 제대로 인정받고 기술 이전이나 거래가 원활하게 이루어지려면 그 기술에 대한 정확한 가치평가가 무엇보다도 중요하기 때문이다. 본 연구에서는 기술거래 및 사업화를 위한 현재 일반적으로 이루어지고 있는 전반적인 기술 가치평가 방법에 대해 알아보고, 특별히 기술 수명주기가 짧고 고부가가치를 창출할 수 있는 IT분야의 혁신 기술을 중심으로 한 기술거래가 효율적으로 이루어질 수 있도록 하기 위한 기술가치평가 방법에 대해 검토한다.

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제50권11호
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• pp.544-549
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• 2001

The mechanical and electrical properties of the hot-pressed and pressureless annealed SiC-39vo1.%TiB$_2$electroconductive ceramic composites were investigated as functions of the liquid additives of $Al_2O_3+Y_2O_3$ and the sintering temperature. The result of phase analysis for the SiC-39vo1.%TiB$_2$ composites by XRD revealed $\alpha -SiC(6H),\; TiB_2,\; and YAG(Al_5Y_3O_{12})$ crystal phase. The relative density of SiC-39vo1.% $TiB_2$ composites was increased with increased $Al_2O_3+Y_2O_3$ contents. The fracture toughness showed the highest value of $7.8 MPa.m_{1/2}$ for composites added with 12 wt% $Al_2O_3+Y_2O_3$additives at $1750^{\circk}C$. The electrical resistivity of the SiC-39vo1.%$TiB_2$composites was all positive temperature coefficient resistance(PTCR) in the temperature range of $25S^{\circ}C \;to\; 700^{\circ}C$.