• Title/Summary/Keyword: Adaptation of the major

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Sample-Adaptive Product Quantization and Design Algorithm (표본 적응 프러덕트 양자화와 설계 알고리즘)

  • 김동식;박섭형
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.24 no.12B
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    • pp.2391-2400
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    • 1999
  • Vector quantizer (VQ) is an efficient data compression technique for low bit rate applications. However, the major disadvantage of VQ is its encoding complexity which increases dramatically as the vector dimension and bit rate increase. Even though one can use a modified VQ to reduce the encoding complexity, it is nearly impossible to implement such a VQ at a high bit rate or for a large vector dimension because of the enormously large memory requirement for the codebook and the very large training sequence (TS) size. To overcome this difficulty, in this paper we propose a novel structurally constrained VQ for the high bit rate and the large vector dimension cases in order to obtain VQ-level performance. Furthermore, this VQ can be extended to the low bit rate applications. The proposed quantization scheme has a form of feed-forward adaptive quantizer with a short adaptation period. Hence, we call this quantization scheme sample-adaptive product quantizer (SAPQ). SAPQ can provide a 2 ~3dB improvement over the Lloyd-Max scalar quantizers.

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Whole Transcriptomic Analysis of Bacillus anthracis during Hydrogen Peroxide Decontamination (과산화수소 제독 과정에서의 탄저균 전사체 분석)

  • Kim, Sang Hoon;Kim, Se Kye;Jung, Kyoung Hwa;Yoon, Sung Nyo;Kim, Yun Ki;Kim, Min Cheol;Ryu, Sam Gon;Lee, Hae Wan;Chai, Young Gyu
    • Journal of the Korea Institute of Military Science and Technology
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    • v.18 no.4
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    • pp.478-483
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    • 2015
  • Decontamination of biological agents utilizes hydrogen peroxide($H_2O_2$) for its effectiveness and safeness. Bacillus anthracis is a major target for $H_2O_2$ decontamination. To assess the effect of $H_2O_2$ on B. anthracis and identify biomarkers for decontamination, whole transcriptomic profiling of $H_2O_2$-treated B. anthracis was performed. Here we identified deregulation in stress response genes, transcription factors and cellular homeostasis genes. We also found that expression of antisense RNAs increased in B. anthracis during decontamination. We postulate that B. anthracis prioritizes survival and adaptation in response to $H_2O_2$ treatment by changing its gene expression pattern.

Moderating Effects of Mindfulness on the Relationship between Mental Health and College Life Adjustment (대학생들의 정신건강과 대학생활적응 간의 관계에서 마음챙김의 조절효과)

  • Jeong, Goo-Churl;Jin, Ying-Hua
    • The Journal of the Korea Contents Association
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    • v.19 no.9
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    • pp.430-440
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    • 2019
  • This study analyzed the moderating effect of mindfulness on the relationship between college students' mental health and college life adjustment. The study subjects were 246 college students. Data were analyzed using ANOVA, Pearson's correlation analysis, and multiple regression analysis. The results of this study were as follows. First, the group with high satisfaction regarding their major showed significantly higher mindfulness and college life adjustment than the group with low satisfaction. Second, ta negative correlation was found between mental health(hypochondriasis, depression, psychopathic deviate, paranoia, schizophrenia, introversion) and mindfulness. Third, a significant negative correlation was found between mental health (depression, psychopathic deviate, paranoia, psychasthenia, schizophrenia, introversion) and college life adjustment. Fourth, mindfulness positively impacted college life adaptation. Fifth, mindfulness also had a significant moderating effect on the relationship between mental health (depression, psychopathic deviate, psychasthenia, schizophrenia, introversion) and college life adjustment. Thus, this study focused on the role and importance of mindfulness as a way to improve mental health and adjustment among college students.

Applicability Analysis of Major Crop Models on Korea for the Adaptation to Climate Change (기후변화 대응을 위한 주요 작물모델의 국내 적용성 분석)

  • Song, Yongho;Lim, Chul-Hee;Lee, Woo-Kyun;Eom, Ki-Cheol;Choi, Sol-E;Lee, Eun Jung;Kim, Eunji
    • Journal of Climate Change Research
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    • v.5 no.2
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    • pp.109-125
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    • 2014
  • Suitable climate condition is essential for stable growth of crops which directly leads to an increase in crop production. Preceding domestic researches mostly used crop models to predict grain or crop yield in relation to climate change. However, the use of various models and input data based on foreign background lowered the reliability for result. Therefore in this study, we evaluated domestic applicability by comparing and analyzing various crop models developed abroad. In addition, we selected models based on the possibility of acquiring input data and suggested domestic applicability.

International Success the Second Time Around: A Case Study (제이륜국제성공(第二轮国际成功): 일개안례연구(一个案例研究))

  • Colley, Mary Catherine;Gatlin, Brandie
    • Journal of Global Scholars of Marketing Science
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    • v.20 no.2
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    • pp.173-178
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    • 2010
  • A privately held, third generation family owned company, Boom Technologies, Inc. (BTI), a provider of products and services to the electric utility, telecommunications and contractor markets, continues to make progress in exporting. Although export sales only equaled 5% of total revenue in 2008, BTI has an entire export division. Their export division's Managing Director reveals the trial and errors of a privately held company and their quest for success overseas. From its inception, BTI has always believed its greatest asset is its employees. When export sales struggled due to lack of strategy and direction, BTI hired a Managing Director for its export division. With leadership and guidance from BTI's president and from the Managing Director, they utilized the department's skills and knowledge. Structural changes were made to expand their market presence abroad and increase export sales. As a result, export sales increased four-fold, area managers in new countries were added and distribution networks were successfully cultivated. At times, revenue generation was difficult to determine due to the structure of the company. Therefore, in 1996, the export division was restructured as a limited liability company. This allowed the company to improve the tracking of revenue and expenses. Originally, 80% of BTI's export sales came from two countries; therefore, the initial approach to selling overseas was not reaching their anticipated goals of expanding their foreign market presence. However, changes were made and now the company manages the details of selling to over 80 countries. There were three major export expansion challenges noted by the Managing Director: 1. Product and Shipping - The major obstacle for BTI was product assembly. Originally, the majority of the product was assembled in the United States, which increased shipping and packaging costs. With so many parts specified in the order, many times the order would arrive with parts missing. The missing parts could equate to tens of thousands of dollars. Shipping these missing parts separately in another shipment also cost tens of thousands of dollar, plus a delivery delay time of six to eight weeks; all of which came out of the BTI's pockets. 2. Product Adaptation - Safety and product standards varied widely for each of the 80 countries to which BTI exported. Weights, special licenses, product specification requirements, measurement systems, and truck stability can all differ from country to country and can serve as a type of barrier to entry, making it difficult to adapt products accordingly. Technical and safety standards are barriers that serve as a type of protection for the local industry and can stand in the way of successfully pursuing foreign markets. 3. Marketing Challenges - The importance of distribution creates many challenges for BTI as they attempt to determine how each country prefers to operate with regard to their distribution systems. Some countries have competition from a small competitor that only produces one competing product; whereas BTI manufactures over 100 products. Marketing material is another concern for BTI as they attempt to push marketing costs to the distributors. Adapting the marketing material can be costly in terms of translation and cultural differences. In addition, the size of paper in the United States differs from those in some countries, causing many problems when attempting to copy the same layout and With distribution being one of several challenges for BTI, the company claims their distribution network is one of their competitive advantages, as the location and names of their distributors are not revealed. In addition, BTI rotates two offerings yearly: training to their distributors one year and then the next is a distributor's meeting. With a focus on product and shipping, product adaptation, and marketing challenges, the intricacies of selling overseas takes time and patience. Another competitive advantage noted is BTI's cradle to grave strategy, where they follow the product from sale to its final resting place, whether the truck is leased or purchased new or used. They also offer service and maintenance plans with a detailed cost analysis provided to the company prior to purchasing or leasing the product. Expanding abroad will always create challenges for a company. As the Managing Director stated, "If you don't have patience (in the export business), you better do something else." Knowing how to adapt quickly provides BTI with the skills necessary to adjust to the changing needs of each country and its own unique challenges, allowing them to remain competitive.

Balanced Strategy, Coordinating and Learning Mechanism, and Performance of Hospitals (의료기관의 균형적 경영전략, 조정 및 학습 기전의 경영성과에 대한 영향)

  • Noh, Yeon-Joo;Ryu, See-Won;Kim, Young-Rhang
    • Korea Journal of Hospital Management
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    • v.14 no.4
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    • pp.1-24
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    • 2009
  • The purpose of this study was to find out the differences and relationships among balanced strategy, coordinating and learning mechanism, and perceived performance of hospitals in Korea, and provide some directions to establish effective strategic management of hospital. Measure items on balanced strategy, coordinating and learning mechanism, and perceived performance were developed from previous studies. Questionnaire was sent and received through Internet site and e-mail during May, 2008. Data were collected from key informant in each institutions, and analyzed using frequency analysis, T-test, ANOVA, correlation and regression analysis. The major findings of this study were as follows: 1. The level of strategic selection and external learning mechanism of private hospital was lower than that of medical corporation, and others corporation hospital. 2. There was little difference between hospitals in metropolitan and those in small cities. 3. Hospitals that have under 100 beds were statistically lower level in strategic selection and external learning mechanism than hospitals has over 100 beds. 4. Formal coordinating and external learning mechanism, and foundation form(medical corporation) were significantly influenced on profitability from specialized field. 5. Strategic selection and adaptation mechanism were significantly affected on total profitability. 6. Strategic selection and external learning mechanism were significantly influenced on competitive power around its local market. Hospitals that are to be competitive by specialization should have to establish mechanism for management such as balanced strategy, coordinating and learning mechanism.

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The Influence of Gender Role Conflicts, Academic Stress Coping Ability, and Social Support on Adaptations to College Life among Male Nursing Students (남자 간호대학생의 성역할 갈등, 학업스트레스 대처, 사회적 지지가 대학생활 적응에 미치는 영향)

  • Jeon, Hae-Ok;Yeom, Eun-Yi
    • The Journal of the Korea Contents Association
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    • v.14 no.12
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    • pp.796-807
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    • 2014
  • This study examined effects of gender role conflicts, academic stress coping ability, and social support on adaptations to college life among male nursing students. Data were collected through self reported structured questionnaire form 225 male nursing students using convenient sampling methods from April 1 to June 4, 2014. Stepwise regression showed that academic stress coping ability had the greatest effect on adaptations to college life(${\beta}=0.33$, p<.001), followed by major satisfaction, social support, gender role conflicts and club activity. These variables together explained 33% of the adaptations to college life in male nursing students(F=23.50, p<.001). Therefore, programs for resolving gender role conflicts and reinforcing academic stress coping ability should be developed. And social support network which consist of professors and the senior-junior nursing students will help to improve adaptability to college life in male nursing students.

Modeling the effects of excess water on soybean growth in converted paddy field in Japan. 2. modeling the effect of excess water on the leaf area development and biomass production of soybean

  • Nakano, Satoshi;Kato, Chihiro;Purcell, Larry C.;Shiraiwa, Tatsuhiko
    • Proceedings of the Korean Society of Crop Science Conference
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    • 2017.06a
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    • pp.308-308
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    • 2017
  • The low and unstable yield of soybean has been a major problem in Japan. Excess soil moisture conditions are one of the major factors to restrict soybean productivity. More than 80 % of soybean crops are cultivated in converted paddy fields which often have poor drainage. In central and eastern regions of Japan, the early vegetative growth of soybean tends to be restricted by the flooding damage because the early growth period is overlapped with the rainy season. Field observation shows that induced excess water stress in early vegetative stage reduces dry matter production by decreasing intercepted radiation by leaf and radiation use efficiency (RUE) (Bajgain et al., 2015). Therefore, it is necessary to evaluate the responses of soybean growth for excess water conditions to assess these effects on soybean productions. In this study, we aim to modify the soybean crop model (Sinclair et al., 2003) by adding the components of the restriction of leaf area development and RUE for adaptable to excess water conditions. This model was consist of five components, phenological model, leaf area development model, dry matter production model, plant nitrogen model and soil water balance model. The model structures and parameters were estimated from the data obtained from the field experiment in Tsukuba. The excess water effects on the leaf area development were modeled with consideration of decrease of blanch emergence and individual leaf expansion as a function of temperature and ground water level from pot experiments. The nitrogen fixation and nitrogen absorption from soil were assumed to be inhibited by excess water stress and the RUE was assumed to be decreasing according to the decline of leaf nitrogen concentration. The results of the modified model were better agreement with the field observations of the induced excess water stress in paddy field. By coupling the crop model and the ground water level model, it may be possible to assess the impact of excess water conditions for soybean production quantitatively.

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Methodological Triangulation Method to Evaluate Adjustment to College Life in Associate Nursing College Students (일 지역 3년제 간호대학생의 대학생활 적응: 방법론적 트라이앵귤레이션 적용)

  • Choi, Jihea;Park, Mi-Jeong
    • The Journal of the Korea Contents Association
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    • v.13 no.7
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    • pp.339-349
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    • 2013
  • This is a methodological triangulation study to investigate of adjustment to college life in associate nursing college students. Participants were 139 associate nursing students. Data were collected from September 15 to November 17, 2012. Quantitative data were analyzed using PASW 20.0. Qualitative data were analyzed using open coding and categorization. Mean value for adjustment to college life was 2.96. It was significantly different according to nursing major (F=6.23, p=.003), study loading (F=4.47, p=.013), and perceived learning achievement (F=6.87, p=.001). 'Burden on study loading', 'Burden on job finding', 'Securing diverse support', 'Diverse extra-curricular', and 'Qualified practicum education' were extracted from the qualitative data. Results suggest diverse program development to decrease study loading, increase chances to connect with supporters, provide various extra-curricular activities and guarantee qualified practicum education are important in associate nursing college students' adaptation to college life.

Geographical Variation in Bud-burst Timing of Zelkova serrata Provenances (느티나무 산지별 개엽시기의 지리적 변이)

  • Kim, In Sik;Han, Sang Urk;Lee, Wi Young;Na, Sung Joon
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.15 no.3
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    • pp.191-200
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    • 2013
  • This study was conducted to examine the geographic variation of bud phenology of Zelkova serrata provenances. Data were collected from Gangneung, Yilmsil, Hwaseong and Jinju plantations which were parts of the 6 provenance trials established by Korea Forest Research Institute in 2009. The 16 provenances were included in these trials. The starting date of bud burst and finishing date of leaf expansion were investigated from April to May every other day. The four geographic factors and fifteen climatic factors of the test sites and provenances were considered in this study. Canonical correlation analysis was conducted to examine the major factors affecting the bud phenology between test sites and provenances. The study results suggested that the major factors affecting the timing of bud burst were the differences of extremely high temperature (March-October), annual mean temperature, mean temperature (March-October), extremely high temperature (July-August) and mean humidity (June-October) between test site and provenance. The provenances with lower mean or high temperature than those of plantation showed the earlier bud burst and leaf expansion. It showed a typical north-south or low-high temperature cline. Finally, we discussed the implication of the tree breeding program of Z. serrata based on these results.