• Title/Summary/Keyword: Trend comparison

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Brightness Value Comparison Between KOMPSAT-2 Images with IKONOS/GEOEYE-1 Images (KOMPSAT-2 영상과 IKONOS/GEOEYE-1 영상의 밝기값 상호비교)

  • Kim, Hye-On;Kim, Tae-Jung;Lee, Hyuk
    • Korean Journal of Remote Sensing
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    • v.28 no.2
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    • pp.181-189
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    • 2012
  • Recently, interest in potential for estimating water quality using high resolution satellite images is increasing. However, low SNR(Signal to Noise Ratio) over inland water and radiometric errors such as non-linearity of brightness value of high resolution satellite images often lead to accuracy degradation in water quality estimation. Therefore radiometric correction should be carried out to estimate water quality for high resolution satellite images. For KOMPSAT-2 images parameters for brightness value-radiance conversion are not available and precise radiometric correction is difficult. To exploit KOMPSAT-2 images for water quality monitoring, it is necessary to investigate non-linearity of brightness value and noise over inland water. In this paper, we performed brightness value comparison between KOMPSAT-2 images and IKONOS/GeoEye-1, which are known to show the linearity. We used the images obtained over the same area and on the same date for comparison. As a result, we showed that although KOMPSAT-2 images are more noisy;the trend of brightness value and pattern of noise are almost similar to reference images. The results showed that appropriate target area to minimize the impact of noise was $5{\times}5$. Non-linearity of brightness value between KOMPSAT-2 and reference images was not observed. Therefore we could conclude that KOMPSAT-2 may be used for estimation of water quality parameters such as concentration of chlorophyll.

The Research on the Comparison of Warrior Role with the Three Kingdoms an the Theme in the Korea-and-China Games - to GUAN YU as the Center (한중게임 중 삼국지를 배경으로 한 무장(武將) 캐릭터에 대한 비교 연구 -관우(關羽)를 중심으로)

  • Ping, Sun-Shu;Lee, Dong-Lyeor
    • Journal of Digital Convergence
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    • v.12 no.4
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    • pp.461-466
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    • 2014
  • With the popularity of Japan's "Three Kingdoms" series of games, the Three Kingdoms became popular and gave birth to the Three Kingdoms game for the traditional cultural resources and cultural industries. At the same time generate economic benefits and promote the traditional culture of double effect. With Liu Bei, Guan Yu and other roles in the development of cultural industries in each particular historical figure internationalization appearance design to get attention in the digital arts industry. In this thesis, three kingdoms cultures and three kingdoms generals were analyzed based on classic novel Three Kingdoms (三国演义). Guan Yu, China and South Korea in appearing common in the game as the center. Take example of the role of Guan Yu's generals styling, clothing, weapons, color comparison, attempts to explore the international trend of historical figures game character.

Evaluating Usability of E-government Web Sites Using the AHP (AHP를 이용한 전자청부 웹사이트의 사용성 평가 방법론)

  • Byun, Dae-Ho
    • Journal of Digital Convergence
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    • v.8 no.3
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    • pp.19-37
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    • 2010
  • One of the core issues in the realization of e-government is the effective implementation of a website. The current trend of e-government is developing individual web sites and portals, covering such fields as education, tax, economics, real estate, travel, and health. Evaluating e-government web sites is essential for improving web sites. These principles can be included in usability in a broader concept. Website usability has attracted considerable research on website evaluation and has been regarded as one of the most important criteria for measuring and evaluating websites. Usable e-government web sites make citizens willing to search for helpful information or solve their civil applications. The objective of this paper is to suggest an Analytic Hierarchy Process (AHP) method for evaluating e-government web sites. The proposed AHP method has two special characteristics compared to general AHP approaches. First, all citizens who are e-government users can evaluate both the usability criteria and the web sites, but the weighting mechanism differs between criteria and web sites. Secondly, a pairwise comparison is time-consuming and not cost effective with many criteria. Therefore for evaluating a website with respect to a sub-criterion, we develop checklist items as measure scales with a seven-point rating. This method is efficient as it enable us to avoid the pairwise comparison mechanism between sub-criteria. A new computation procedure for the AHP is developed that combines and synthesizes priorities of portals in the case that two decision maker groups are involved.

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Analysis of Research Trend and Performance Comparison on Message Authentication Code (메시지 인증 코드에 대한 연구 동향 분석 및 성능 비교)

  • Kim, Minwoo;Kwon, Taekyoung
    • Journal of KIISE
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    • v.43 no.11
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    • pp.1245-1258
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    • 2016
  • Cryptographic technologies providing confidentiality and integrity such as encryption algorithms and message authentication codes (MACs) are necessary for preventing security threats in the Internet of Things (IoT) where various kinds of devices are interconnected. As a number of encryption schemes that have passed security verification are not necessarily suitable for low-power and low-performance IoT devices, various lightweight cryptographic schemes have been proposed. However, a study of lightweight MACs is not sufficient in comparison to that of lightweight block ciphers. Therefore, in this paper, we reviewed various kinds of MACs for their classification and analysis and then, we presented a new way for future MAC development. We also implemented major MAC algorithms and performed experiments to investigate their performance degradation on low-end micro-controllers.

Verifying a Method of Qualitatizing Qualitative Factors of BSC (BSC의 정성적요인 계량화 검증 방법)

  • Oh, Sang-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.2
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    • pp.414-420
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    • 2007
  • For a more convenient deduction of the weighted values in AHP of BSC using a spread sheet program, this study derived each weighted values through single and group calculations and it also compared the two calculations to verify mutual identities. Pairwise comparison is generally used in measuring performance of corporations or government organizations, but, many researches have been done without reliability verification due to difficulty in the deduction of weighted value. This trend, like using a wrong measurement, result in defective result of BSC. Therefore, this study presents various methods of single and group case measurement using spread sheet so that it can be utilized in practice. Thus, I expect this study's result be availed in BSC consulting or research of public organizations that have difficulty in measuring qualitative factors.

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Urbanization and Population Distribution in North Korea : A Comparison to South Korea (북한의 도시화와 인구분포 : 남한과의 비교)

  • 김두섭
    • Korea journal of population studies
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    • v.18 no.2
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    • pp.70-97
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    • 1995
  • The main purpose of this paper is to analyze the trend of urbanization and population distribution in North Korea. Although North Korean data lack comparable details, attention has been given to the comparison of urban system between North and South Korea. In North Korea, the pace of urbanization was most rapid just after the Korean War, from 1954 to 1960. However, the pace slowed down markedly in the early 1970s and has remained sluggish since then. North Korea is currently much less urbanized than South Korea. As specific features of urbanization in North Korea, emergence of new cities along inland borders, prominence of intermediate-sized cities, and sudden population growth of major cities due to boundary expansion are stressed. Available demographic data also indicate an overwhelming primacy of Pyongyang Municipality in the urban system, and rapid growth of satellite cities in the west-central region. It appears that, in North Korea, urbanization process has been a product of the government's development policies rather than individual's socioeconomic motivation to migrate urbanward. Finally, migration issues after unification of the Korean Peninsula and related problems are discussed in this study.

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Analysing the Meaning of Quality Management in Cross-border Business Cooperations by using Benchmarking Methodology

  • Basler, Maurice;Voigt, Matthias;Woll, Ralf
    • International Journal of Quality Innovation
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    • v.8 no.2
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    • pp.57-68
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    • 2007
  • Benchmarking is more than just a comparison of measures about different company's performance in a wider sense. It is a methodology of learning-comparing-learning, at least within small and medium sized enterprises. This learning is not just limited to learn by copying successful concepts from other enterprises or competitors. It starts in learning more about the own company, about its structure and processes causing its own success or its failure. This kind of learning is necessary before the enterprise starts watching for a suitable Benchmarking partner. Learning from each other's strengths and weaknesses is the main goal of the European research project Quality beyond Borders! By using the Benchmarking methodology, small and medium sized enterprises get the opportunity to take part in a Benchmarking study and can learn more about the different strengths and weaknesses of other enterprises on both sides of the border. The results of such a Benchmarking can help to identify potentials for future cooperations among German and Polish enterprises in the same market or business. These potentials can lie in different ways of realising the same success or top-position. The Benchmarking study is not focused on an special business or region. That helps to find out trends for different kinds of top-positions, which can be claimed in all markets within a country. Every trend is characterised by different success factors which are responsible for the success in this top-position. In a first overview, the results of the Benchmarking study show 5 different groups of top-positions within a market which all have different profiles regarding to the importance of their success factors. By the end of the Benchmarking study it will be possible, to give answer about the special reasons for different kind of successes of these groups. These answers can be related to a special region within a country, a special business or of course related to possible differences in the expression of the group success factors in comparison of both countries.

Effect of Strategic Feed Supplementation during Gestation on Intake, Blood-biochemical Profile and Reproductive Performance of Goats

  • Rastogi, Ankur;Dutta, Narayan;Sharma, K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.16 no.12
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    • pp.1725-1731
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    • 2003
  • Effect of strategically supplemented pregnancy allowance was ascertained during different phases of gestation on the reproductive performance of does. Gravid does (18) were allotted to 3 dietary treatments HH, HL and LH in a completely randomized block design. All does were provided wheat straw ad libitum and supplemented with concentrate mixture at the rate of $20g/kgW^{0.75}$ from 0-60 days post-mating. Subsequently, HH group was given concentrate at the rate of $40g/kgW^{0.75}$ from 61 d post-mating to term. HL group was offered concentrate from 61-90 d post-mating and 121d post mating to term at the rate of $20g/kgW^{0.75}$ and from 91-120 d post-mating at the rate of $40g/kgW^{0.75}$. LH group was provided with concentrate from 61 to 120 d post-mating and 121 to term at the rate of 20 g and $40g/kgW^{0.75}$, respectively. Mean total dry matter and concentrate intake ($g/kgW^{0.75}$) was significantly higher on HH in comparison to comparable intake of HL and LH treatments, however, wheat straw followed the reverse trend. Haematological and biochemical parameters except serum glucose, total serum protein and A:G ratio did not differ significantly among dietary treatments. The gross gain in weight, products of pregnancy at 21 weeks of gestation, pregnant does average daily gain, birth weight of kids and survivability of kids were significantly lower in treatment HL in comparison to comparable values for HH and LH treatments. The net gain in gravid does was significantly higher in treatment HH than the comparable values obtained in HL and LH treatments. The last month of pregnancy was found to be nutritionally most sensitive period of gestation for native goats.

A Study on the Service Quality Assessment Utilizing 6 Sigma - Focused on Domestic Banks - (6 시그마를 활용한 서비스품질 평가에 관한 연구 - 국내 은행을 중심으로 -)

  • Kim, Jong-Hoon;Song, Gwang-Suk;Yoo, Han-Joo
    • Journal of Korean Society for Quality Management
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    • v.39 no.4
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    • pp.527-542
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    • 2011
  • The importance of service industry in national economy is getting increasing due to current trend of aging society and increasingly desire for better quality of life. However, the level of labor productivity in domestic service industry is lower than Japan and Germany that are typically strong in manufacturing industry. Difficulty of process control and measurement in accordance with variability and intangibility which are features of service industry, is considered as the cause of this poor labor productivity in Korea. This study aims to present managerial implications by calculating sigma levels on branch bank service quality and suggesting the quality dimensions of banks can be checked through a gap comparison between the sigma level on service quality in the whole banks and service quality in each bank. Quality level presented by the KS-SQI is applied to the measurement method that Yoo Han Joo and Song Kwang Seok suggested in 2006. Spss18.0 is used as an analysis tool. As a result of factorial analysis, 7 dimensions of service quality in KS-SQI can be divided into new 3 dimensions of service quality. This study also suggests that width and number of questions in previous questionnaire shall be extended. The whole of the bank service quality level is evaluated 3 sigma. The research help banks to figure out their service quality level through gap comparison objectively.

A Numerical Study of Flame Spread of A Surface Forest Fire (지표화 산불의 화염전파 수치해석)

  • Kim, Dong-Hyun;Lee, Myung-Bo;Kim, Kwang-Il
    • 한국전산유체공학회:학술대회논문집
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    • 2008.03b
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    • pp.80-83
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    • 2008
  • The characteristics of the spread of a forest fire are generally related to the attributes of combustibles, geographical features, and meteorological conditions, such as wind conditions. The most common methodology used to create a prediction model for the spread of forest fires, based on the numerical analysis of the development stages of a forest fire, is an analysis of heat energy transmission by the stage of heat transmission. When a forest fire breaks out, the analysis of the transmission velocity of heat energy is quantifiable by the spread velocity of flame movement through a physical and chemical analysis at every stage of the fire development from flame production and heat transmission to its termination. In this study, the formula used for the 1-dimensional surface forest fire behavior prediction model, derived from a numerical analysis of the surface flame spread rate of solid combustibles, is introduced. The formula for the 1-dimensional surface forest fire behavior prediction model is the estimated equation of the flame spread velocity, depending on the condition of wind velocity on the ground. Experimental and theoretical equations on flame duration, flame height, flame temperature, ignition temperature of surface fuels, etc., has been applied to the device of this formula. As a result of a comparison between the ROS(rate of spread) from this formula and ROSs from various equations of other models or experimental values, a trend suggesting an increasing curved line of the exponent function under 3m/s or less wind velocity condition was identified. As a result of a comparison between experimental values and numerically analyzed values for fallen pine tree leaves, the flame spread velocity reveals has a error of less than 20%.

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