• Title/Summary/Keyword: Test hypothesis

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A Novel Video Copy Detection Method based on Statistical Analysis (통계적 분석 기반 불법 복제 비디오 영상 감식 방법)

  • Cho, Hye-Jeong;Kim, Ji-Eun;Sohn, Chae-Bong;Chung, Kwang-Sue;Oh, Seoung-Jun
    • Journal of Broadcast Engineering
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    • v.14 no.6
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    • pp.661-675
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    • 2009
  • The carelessly and illegally copied contents are raising serious social problem as internet and multimedia technologies are advancing. Therefore, development of video copy detection system must be settled without delay. In this paper, we propose the hierarchical video copy detection method that estimates similarity using statistical characteristics between original video and manipulated(transformed) copy video. We rank according to luminance value of video to be robust to spacial transformation, and choose similar videos categorized as candidate segments in huge amount of database to reduce processing time and complexity. The copy videos generally insert black area in the edge of the image, so we remove rig black area and decide copy or not by using statistical characteristics of original video and copied video with center part of frame that contains important information of video. Experiment results show that the proposed method has similar keyframe accuracy to reference method, but we use less memory to save feature information than reference's, because the number of keyframes is less 61% than that of reference's. Also, the proposed method detects if the video is copied or not efficiently despite expansive spatial transformations such as blurring, contrast change, zoom in, zoom out, aspect ratio change, and caption insertion.

A Study on Present Status of Preferences in the Choice of Patterns in Clothing (의복문양(衣服紋樣)의 기호도에 관한 실태(實態) 연구(硏究) - 한복(韓服)을 중심(中心)으로 -)

  • Kim, Eun-Ju
    • Journal of the Korean Society of Costume
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    • v.6
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    • pp.65-87
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    • 1982
  • 1. Purpose: The purpose is to apply and adapt ancient textile pattern to practical life, and to contribute to the promotion of the creative development of modernization and Koreanization of textile pattern by the survey of the extent of taste for the textile pattern existent in Korean costume among costumes. 2. Hypothesis: Textile pattern is in most classical one expressed in fact, but nowadays abstract or geometric one is more exist. Consumers are in most part in forties, and so the taste cannot be ignored. Therefore aesthetic consciousness found Korean costume is more important rather than excessively bold or mordern one. 3. Method and Process: (1) This research is analysed 386 one through college student and parents of a primary or high school. (2) Taste of the pattern is comparisoned and analyzed as age. education, pocket money of the student or an income of a month in home through computer. And the analysis of the statistics research is operation through the Chi-Square Goodness of-Fit-Test. 4. Conclusion: (1) The Korean costume put on mostly party or formal dress, therefore it should be researched as an outdoor dress with traditional costume. (2) The most one is concerned in textile pattern, it's taste is different from color, constitution. Textile industry is developed not only weave pattern, gold-coverning pattern but embroidry pattern, dye pattern, therefore the various side of pattern design should be researched. (3) In Side of form, plant pattern is not only most various but highest in popularity. According to approach nowadays, all of the pattern becomes composition or geometric one with abstract tendency and so from these day pattern is necessary combinationed, researched with our people emotion. (4) The color of textile pattern is choiced individual taste. Through investige, research in various side of the modern taste and our costume, we take growing interest in the color, composition of textile, and should dressed with beauty and grace. (5) In side of size, textile pattern is choiced to individual face and body shape through research on form, color, size of these pattern, we should endeavor to dress well. (6) In side of application, most people is concerned in not only interior ornament but the costume is high. Costume research by some people of the outside and symbol with interior through the pattern analysis is not only very important but also is due to people culture.

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Information Technology Investment and Effectiveness: Analyzing the Current State of the Art and Performing Empirical Research (정보화 투자비용 및 투자효과: 국내기업 현황 분석 및 실증 연구)

  • Park, So-Hyun;Koo, Bon-Jae;Ham, Yoo-Keon;Lee, Kuk-Hie
    • Information Systems Review
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    • v.8 no.3
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    • pp.201-223
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    • 2006
  • This study surveys the current state of the art in the field of IT investment and performance in domestic finns and investigates the statistical significance of various hypothesis of previous relevant researches. Data of 145 information systems of 133 firms have been collected. The amount of IT budget in 2005 has increased to the level of 2.53% of gross revenue of the firms and IT business value has also increased as compared to the previous year. As results of MANOVA test, it has been found that the amount of IT budget does not affect the level of IT business value. In other words, the relationship between IT investment and IT business value does not exist. And among ten factors which has been known to determine IT business value in previous researches, only three factors have been found to affect the level of IT business value: the technical quality of information systems, CIO leadership in the context of resource allocation and decision makings, and the capability and commitment of the user department. These finding provide insight for both practitioners and researchers.

Effect of Nurse's Professionalism on Customer Orientation, Job Satisfaction and Service Delivery Level in Specialty Hospital (전문병원 간호사의 전문직업성이 직무만족, 고객지향성 및 서비스 수준에 미치는 영향)

  • Lee, Jung-Woo
    • The Journal of the Korea Contents Association
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    • v.11 no.1
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    • pp.266-276
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    • 2011
  • The main purpose of this study is to examine a influence factor of professionalism which is effected on nurse's customer orientation, job satisfaction and service delivery level in specialty hospitals. And this study has reviewed the theoretical background of specialty hospital system, professionalism, customer orientation, job satisfaction and service delivery level, and set up the hypothesis to test the relations with nurse's professionalism, customer orientation, job satisfaction and service delivery level. Data were collected from 142 nurses in 6 specialty hospitals in the Seoul region using a standardized questionnaire. For reliability and appropriateness, Cronbach $\alpha$ and factor analysis and SPSS 12.0K for the actual proof were used. The research findings are summarized below. The professionalism influences positively on the customer orientation and the job satisfaction while it does not on the service delivery level. Also, the customer orientation influences positively on the service delivery level, it does not influence positively on the service delivery level as the research is analyzed. Therefore, the courses that are emphasizing the customer satisfaction and the importance of service should be included in the curriculum of the Department of Nursing Science and the nurses in active service at speciality hospitals should be trained persistently for the importance of customer management.

Improving the Nutritive Value of Full-Fat Rice Bran for Broiler Chickens Using a Lipase-Based Enzyme Preparation

  • Tan, S.H.;Thomas, D.V.;Camden, B.J.;Kadim, I.T.;Morel, P.C.H.;Pluske, J.R.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.3
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    • pp.360-368
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    • 2000
  • Two experiments were conducted to test the hypothesis that a lipase-based enzyme preparation would increase the AME content of full-fat rice bran (FFRB) by increasing fat digestibility when fed to broiler chickens. Experiment 1 used FFRB from Australia and lasted for 35 days, while Experiment 2 used FFRB from Thailand and lasted for 14 days. Rice bran was substituted in a maize-soybean diet at levels of 90 g/kg (Experiment 1) and at 90 and 180 g/kg in Experiment 2. Total collections of excreta were used for determination of AME content and fat digestibility. In Experiment 1, the enzyme increased the AME content of FFRB between days 4-7, 18-21 and 32-35 by 6.1-16.1% (p>0.05), however this was not associated with improved fat digestibility. In Experiment 2, the enzyme enhanced the AME content of FFRB between days 4-7 (10.42 vs. 9.06, p=0.107) and 11-14 (11.94 vs. 9.93, p=0.041), but again, this was not caused by increased fat digestibility. Inclusion of 180 g/kg depressed the AME content of FFRB by 7.4-11.5% (p>0.10) in conjunction with decreased (p<0.05) fat digestibility between 0-14 days of age. Improvements in bird growth with the enzyme were seen in Experiment 2 but not in Experiment 1. Increases in AME content of FFRB per se were not caused by enhanced fat digestibility, suggesting that the side activities associated with the preparation must have acted singularly or in combination to improve AME content and bird performance. These data show that the response of FFRB to the lipase-based enzyme preparation was dependent upon the geographical origin of the rice bran and the level of FFRB substituted in the basal diet.

Dietary Supplementation with Acanthopanax senticosus Extract Modulates Cellular and Humoral Immunity in Weaned Piglets

  • Kong, Xiangfeng;Yin, Yulong;Wu, Guoyao;Liu, Hejun;Yin, Fugui;Li, Tiejun;Huang, Ruilin;Ruan, Zheng;Xiong, Hua;Deng, Zeyuan;Xie, Mingyong;Liao, Yiping;Kim, Sungwoo
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.9
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    • pp.1453-1461
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    • 2007
  • This study was conducted to test the hypothesis that dietary supplementation with an herbal extract of Acanthopanax senticosus (AS) enhances the immune response in weaned piglets. Sixty piglets weaned at 21 days of age were randomly assigned to 3 treatment groups representing the addition of 0 or 1 g/kg of the AS extract or 0.2 g/kg of colistin (an antibiotic) to maize- and soybean meal-based diets (n = 20 per group). On days 7, 14 and 28 after initiation of the addition, total and differential counts of leucocytes, proliferating activity of peripheral lymphocytes, serum levels of immunoglobulins (Ig) and cytokines and the spleen index were determined. The AS extract decreased (p<0.05) the number of neutrophils on days 7 and 28 in comparison with the control group and reduced (p<0.05) serum interleukin-$1{\beta}$ level on day 28 compared with the other 2 groups. Dietary supplementation with the AS extract increased (p<0.05) the lymphocyte/leukocyte ratio on day 28 compared with the control group and increased the proliferating activity of lymphocytes on days 14 and 28 compared with the other 2 groups. The AS extract increased (p<0.05) the serum content of IgG on day 7 and of IgG and IgM on day 28 compared with the other 2 groups, as well as increasing the serum content of tumor necrosis factor on day 7 and spleen index on days 7 and 28 compared with the control group. Collectively, these findings suggest that the AS extract as a dietary additive enhances the cellular and humoral immune responses of weaned piglets by modulating the production of immunocytes, cytokines and antibodies.

Inhibitory Effects of β-Cyclodextrin-Helenalin Complexes on H-TERT Gene Expression in the T47D Breast Cancer Cell Line - Results of Real Time Quantitative PCR

  • Ghasemali, Samaneh;Nejati-Koshki, Kazem;Akbarzadeh, Abolfazl;Tafsiri, Elham;Zarghami, Nosratollah;Rahmati-Yamchi, Mohamad;Alizadeh, Effat;Barkhordari, Amin;Tozihi, Majid;Kordi, Shirafkan
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.11
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    • pp.6949-6953
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    • 2013
  • Background: Nowadays, the encapsulation of cytotoxic chemotherapeutic agents is attracting interest as a method for drug delivery. We hypothesized that the efficiency of helenalin might be maximized by encapsulation in ${\beta}$-cyclodextrin nanoparticles. Helenalin, with a hydrophobic structure obtained from flowers of Arnica chamissonis and Arnica Montana, has anti-cancer and anti-inflammatory activity but low water solubility and bioavailability. ${\beta}$-Cyclodextrin (${\beta}$-CD) is a cyclic oligosaccharide comprising seven D-glucopyranoside units, linked through 1,4-glycosidic bonds. Materials and Methods: To test our hypothesis, we prepared ${\beta}$-cyclodextrin-helenalin complexes to determine their inhibitory effects on telomerase gene expression by real-time polymerase chain reaction (q-PCR) and cytotoxic effects by colorimetric cell viability (MTT) assay. Results: MTT assay showed that not only ${\beta}$-cyclodextrin has no cytotoxic effect on its own but also it demonstrated that ${\beta}$-cyclodextrin-helenalin complexes inhibited the growth of the T47D breast cancer cell line in a time and dose-dependent manner. Our q-PCR results showed that the expression of telomerase gene was effectively reduced as the concentration of ${\beta}$-cyclodextrin-helenalin complexes increased. Conclusions: ${\beta}$-Cyclodextrin-helenalin complexes exerted cytotoxic effects on T47D cells through down-regulation of telomerase expression and by enhancing Helenalin uptake by cells. Therefore, ${\beta}$-cyclodextrin could be superior carrier for this kind of hydrophobic agent.

A Study on the Effects of Organizational Culture Types on Organizational Effectiveness - Focused on Moderating Effect of Organizational Communication - (조직문화 유형이 조직유효성에 미치는 영향에 관한 연구 -조직커뮤니케이션의 조절효과 중심으로-)

  • Kim, Mun-Jun;Kim, No-Sa;No, Yu-Jin
    • Industry Promotion Research
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    • v.2 no.1
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    • pp.15-29
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    • 2017
  • The purpose of this study was to examine how the interaction between organizational culture and organizational communication factors on the effectiveness of a set of organizations has an effect on organizational effectiveness. For the empirical analysis of this study, we conducted a questionnaire survey on the subjects who participated in the core job training course of SMEs. To test the hypothesis of this study, we analyzed the moderating effects of organizational communication on the relationship between organizational culture type and organizational effectiveness by statistical analysis, correlation analysis, regression analysis, multiple regression analysis, and control effect analysis through statistical program SPSS 20.0. The results of the empirical analysis show that organizational culture type positively influences organizational commitment and job satisfaction, but organizational culture has a positive effect on organizational culture. It exhibited a positive moderating effect. Therefore, this study reviewed the theoretical validity of existing studies by analyzing the moderating effects of organizational communication in the relationship between organizational culture type and organizational effectiveness. On the other hand, the empirical analysis of the interaction effects of variables can be interpreted as the pursuit of integration between prior researches that were performed individually.

An Empirical Study on the Effect of Information Sharing Level on Supply Chain Integration between Companies and Corporate's Performance (기업 간 정보공유수준이 공급사슬통합과 기업성과에 미치는 영향에 관한 실증연구)

  • Kim, Hyun-Chung;Lee, Choong-Bae
    • Journal of Korea Port Economic Association
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    • v.36 no.1
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    • pp.141-164
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    • 2020
  • With business environments around the world facing uncertainty and complexity, companies have focused on supply chain management as one of the essential elements in securing a competitive advantage. Successful supply chain management requires internal efforts to strengthen the core competencies of the company and the integration of individual functions in the supply chain. This study aims to investigate the effect of information sharing between companies on supply chain integration and corporate performance. The research hypothesis established in previous studies was analyzed using structural equation modeling. A total of 723 questionnaire responses were used to test the hypotheses of this study. We found that the integration and sharing of information between companies have a great influence on supply chain integration, which has positive effects on corporate performance at the operational and strategic levels, including finance, market share, and customer satisfaction. The integration of supply chains via information integration and sharing between companies can promote the flow of information, services, goods, and money. Therefore, if information is disconnected between actors in the supply chain, it will lead to negative effects on the management of the entire supply chain. On the other hand, if supply chain actors can share information efficiently in real time on one platform, they can expect to optimize the entire supply chain. Information sharing and integration at the strategic and operational levels play a vital role in supply chain integration, which contributes to achieving a company's performance targets and enhancing its competitiveness.

Impact of phosphorus application on the indigenous arbuscular mycorrhizal fungi, soybean growth and yield in a 5-year phosphorus-unfertilized crop rotation

  • Higo, Masao;Sato, Ryohei;Serizawa, Ayu;Gunji, Kento;Suzuki, Daisuke;Isobe, Katsunori
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2017.06a
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    • pp.351-351
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    • 2017
  • Arbuscular mycorrhizal fungi (AMF) are particular soil fungi that benefit many crops and require a symbiosis with plant roots to survive. In our previous study, there was a positive correlation between AMF root colonization and soybean grain yield in a four-year consecutive winter cover crop-soybean rotational system without phosphorus fertilizer. It is suggested that higher AMF root colonization can be a better solution for improving soybean growth and grain yield in P-limited soil. Our purpose in this study was to test the hypothesis that a P application is the main factor improving soybean growth, P nutrition and grain yield, and the benefit from AMF to soybean P uptake and growth in a P-limited soil. Impact of a P application on AMF root colonization and communities in soybean roots and their potential contribution to soybean growth and P nutrition under a five-year P-unfertilized crop rotational system were investigated over two-years. In this study, four cover crop treatments included 1) wheat (Triticum aestivum); 2) red clover (Trifolium pratense); 3) rapeseed (Brassica napus); and 4) fallow in the crop rotation. The amount of triple superphosphate as a P fertilizer applied rate after cultivation of cover crops was 120 and $360k\;ha^{-1}$ in 2014 and 2015, respectively. Soybean roots were sampled at full-flowering and analyzed for AMF communities using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and quantitative real-time PCR (qPCR) techniques. The AMF root colonization in the soybean roots at full bloom stage was significantly influenced by cover crop and P application throughout the two-year rotation. The two-year rotation of different cover crops or fallow impacted the molecular diversity of AMF communities colonizing roots of soybean. Redundancy analysis (RDA) indicated that AMF communities colonizing roots of soybean were significantly different among cover crop rotations. The AMF communities colonizing roots of soybean were clearly influenced by a P application in the two-year trial. Moreover, a P application may have positively impacts on the AMF communities under P-deficit soil due to the continuous cover crop-soybean rotational system without a P fertilizer.

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