• Title, Summary, Keyword: Emphasis

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A 32-Gb/s Inductorless Output Buffer Circuit with Adjustable Pre-emphasis in 65-nm CMOS

  • Tanaka, Tomoki;Kishine, Keiji;Tsuchiya, Akira;Inaba, Hiromi;Omoto, Daichi
    • IEIE Transactions on Smart Processing and Computing
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    • v.5 no.3
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    • pp.207-214
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    • 2016
  • Optical communication systems are rapidly spread following increases in data traffic. In this work, a 32-Gb/s inductorless output buffer circuit with adjustable pre-emphasis is proposed. The proposed circuit consists of an output buffer circuit and an emphasis circuit. The emphasis circuit emphasizes the high frequency components and adds the characteristics of the output buffer circuit. We proposed a design method using a small-signal equivalent-circuit model and designed the compensation characteristics with a 65-nm CMOS process in detail using HSPICE simulation. We also realized adjustable emphasis characteristics by controlling the voltage. To confirm the advantages of the proposed circuit and the design method, we fabricated an output buffer IC with adjustable pre-emphasis. We measured the jitter and eye height with a 32-Gb/s input using the IC. Measurement results of double-emphasis showed that the jitter was 14% lower, and the eye height was 59% larger than single-emphasis, indicating that our proposed configuration can be applied to the design of an output buffer circuit for higher operation speed.

The Influence of Juvenile Self-Efficacy on the Consumption Behavior and the Learning Effects of the Unit 'Consumption Life' (청소년의 자기효능감이 소비행동과 소비생활 단원에 대한 학습효과에 미치는 영향)

  • Park, Eun-Hee
    • Journal of the Korean Home Economics Association
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    • v.50 no.7
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    • pp.1-12
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    • 2012
  • The purpose of this study was to identify the factor structure of self-efficacy, consumer behavior, and the learning effects of the unit 'Consumption Life' and to study the effects of self-efficacy on the consumer behavior, and the learning effects of the unit 'Consumption Life'. Questionnaires were administered to 370 female middle school students living in the Metropolitan City of Daegu. The data was analyzed by using the frequency, descriptive statistics, factor analysis, reliability analysis, multiple regression, and t-test. The findings are as follow. Self-efficacy was composed of five factors such as the capability in work performance, rational performance, fear, anxiety, and the ability to challenge oneself. Consumer behavior was composed of five factors such as emphasis on product display, emphasis on information, emphasis on fashion, emphasis on appearance, and the products/information exchange. The learning effects of the unit 'Consumption Life' was composed of two factors in the economical consumption, and rational consumption. The effects of consumer behavior and the learning effects of the unit 'Consumption Life' on each of the self-efficacy factors like the capability in work performance, rational performance, fear, anxiety, the ability to challenge oneself were explained by factors such as emphasis on product display, emphasis on information, emphasis on fashion, emphasis on appearance and products/information exchange, and economical consumption and rational consumption.

The Effects of Whole-task Sequencing Emphasis Manipulation on Expertise Acquisition in Web Based Complex Task (웹기반 복합적 과제에서 전체과제 계열화 강조변화 방법이 전문성 향상에 미치는 영향)

  • Kim, Kyung-Jin;Kim, Kyung
    • Journal of The Korean Association of Information Education
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    • v.20 no.6
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    • pp.629-644
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    • 2016
  • The purpose of this study was to investigate the effects of whole-task sequencing emphasis manipulation on expertise acquisition in web based complex task. To achieve the purpose, emphasis manipulation sequencing type is composed of a simple emphasis manipulation, a snowballing manipulation, and a full emphasis manipulation sequencing and participants was drawn from a pool of 93 undergraduate students sampled for the study. According to the findings, a snowballing manipulation group invested significantly lower cognitive load than a full emphasis manipulation group but did not a simple emphasis manipulation group. Based on these findings, though complex task is included of high interactivity owing to real task, learner cannot suffer cognitive overload because emphasis manipulation which can view the whole task and the part task in parallel provides meta cognition for learner. And whole-task sequencing emphasis manipulation affects to transfer. The snowballing emphasis manipulation group invested significantly higher than simple emphasis manipulation group and full emphasis manipulation group. Based on these findings, the snowballing manipulation which learner use whole-task sequencing and part-task sequencing simultaneously contribute to understandings and ability to solve problems for complex task and it will in turn, lead to expertise acquisition.

An Analysis on the Units of 'Adolescence Self-Management' and 'Adolescence Consumption Life' in Technology.Home Economics Textbooks Used in Middle Schools: Focusing on How the Emphasis of the 2007 Curriculum Revision is Reflected (중학교 1학년 기술.가정 교과서의 '청소년의 자기관리'와 '청소년의 소비생활' 단원 분석: 2007개정 교육과정의 강조점 반영을 중심으로)

  • Lee, Yon-Suk
    • Journal of Korean Home Economics Education Association
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    • v.22 no.3
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    • pp.55-75
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    • 2010
  • The purpose of this study is to analyze how the emphasis of the 2007 curriculum revision is reflected on the units of 'Adolescence Self-Management' and 'Adolescence Consumption life' in the Technology·Home Economics textbooks that are used in middle school from this year. The entry style of large, middle, and small units, the objectives statements, the main contents, the activities, illustrations/tables/pictures, the supplemental materials, and the ending style of middle and large units of 12 Technology·Home Economics textbooks were analyzed. Among the several specific emphasis in the 2007 curriculum revision, 3 major emphasis were selected. The 3 major emphasis that were selected were: practical reasoning process, sustainable consumption life, and career education. How these 3 emphasis were reflected in the various parts of the 12 textbooks were analyzed using the criteria found in the literature. The purpose of this study is to analyze how the emphasis of the 2007 curriculum revision is reflected on the units of 'Adolescence Self-Management' and 'Adolescence Consumption life' in the Technology·Home Economics textbooks that are used in middle school from this year. The entry style of large, middle, and small units, the objectives statements, the main contents, the activities, illustrations/tables/pictures, the supplemental materials, and the ending style of middle and large units of 12 Technology·Home Economics textbooks were analyzed. Among the several specific emphasis in the 2007 curriculum revision, 3 major emphasis were selected. The 3 major emphasis that were selected were: practical reasoning process, sustainable consumption life, and career education. How these 3 emphasis were reflected in the various parts of the 12 textbooks were analyzed using the criteria found in the literature.

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10Gbps Driver Design with Pre-Emphasis Functionality (Pre-Emphasis 기능을 갖는 10Gbps 드라이버의 설계)

  • Lee, Woo-Kwan;Rim, Woo-Jin;Kim, Soo-Won
    • Proceedings of the IEEK Conference
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    • pp.691-694
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    • 2005
  • This paper proposed 10Gbps driver with pre-emphasis for high speed transmitter. the proposed driver increase bandwidth using Ft doubler method and design driver block and pre-emphasis block in together. Pre-emphasis functionality confirmed to control VDS of current source o driver, not to control slew rate of termination resistor. The proposed driver is designed in a 1.5V/0.13um 1-poly, 5-metal CMOS mixed-signal process.

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A Study on a New Pre-emphasis Method Using the Short-Term Energy Difference of Speech Signal (음성 신호의 다구간 에너지 차를 이용한 새로운 프리엠퍼시스 방법에 관한 연구)

  • Kim, Dong-Jun;Kim, Ju-Lee
    • The Transactions of the Korean Institute of Electrical Engineers D
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    • v.50 no.12
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    • pp.590-596
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    • 2001
  • The pre-emphasis is an essential process for speech signal processing. Widely used two methods are the typical method using a fixed value near unity and te optimal method using the autocorrelation ratio of the signal. This study proposes a new pre-emphasis method using the short-term energy difference of speech signal, which can effectively compensate the glottal source characteristics and lip radiation characteristics. Using the proposed pre-emphasis, speech analysis, such as spectrum estimation, formant detection, is performed and the results are compared with those of the conventional two pre-emphasis methods. The speech analysis with 5 single vowels showed that the proposed method enhanced the spectral shapes and gave nearly constant formant frequencies and could escape the overlapping of adjacent two formants. comparison with FFT spectra had verified the above results and showed the accuracy of the proposed method. The computational complexity of the proposed method reduced to about 50% of the optimal method.

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The Financial Impact Generated by Shifts in Value Strategic Emphasis (가치전략 중점의 변화가 재무성과에 미치는 영향)

  • Hong, Kichul;Park, Kwangho
    • Journal of the Society of Korea Industrial and Systems Engineering
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    • v.39 no.4
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    • pp.26-39
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    • 2016
  • Korea's main manufacturing industries, which have led its economy for the past three decades, are faced with a serious downturn and loss of competitive advantages due to the current economic depression, China's rise, and the drop of oil prices. Korean business firms must adopt the paradigm shift in their value strategies, along with a government-led industrial restructuring in order to gain sustainable competitive advantages. Business firms allocate their limited resources between value creation and value appropriation, however, what effect does strategic emphasis on value creation versus value appropriation have on a business firm's financial performance? This paper empirically addresses this issue by examining the effect of shifts in strategic emphasis on stock return. Furthermore, this study examines appropriate choices of strategic emphasis to gain differential financial performance. The data set used in this regression analysis comes from the KISLINE database of NICE Information Service. The variables that form the basis of this analysis are stock return, ROA, and Strategic Emphasis [(advertising expenditures-R&D expenditures)/assets]. The interactive effect with situational factors regarding the firm and the type of technological environment in which the firm is operating was also analyzed. Our results show that investors acknowledge a shift of strategic emphasis as a sign of stock valuation. In comparison to US, Korean business firms have weak value creation capabilities in high-technology industries, and weak value appropriation capabilities in low-technology industries. This proves Korean firms are fast followers in the global market. Our findings suggest that Korean firms have to adopt a balanced value strategy, nurturing value creation and developing value appropriation for overcoming the current economic downturn and becoming a first mover in the dawn of "Industry 4.0."

The Functional Change of Rural Society in Korea: from Food Supply to Balanced Development (한국 농촌의 기능 변화: 식량공급에서 국가균형발전으로)

  • Lim Hyung-Baek
    • The Korean Journal of Community Living Science
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    • v.17 no.1
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    • pp.55-65
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    • 2006
  • The major purposes of this paper are (1) to explore korean rural planning as subplanning of nation planning and regional planning, (2) to explore functional change of korean rural areas, (3) and suggest appropriate policy for functional change of rural society in Korea. I divided korean rural planning into five periods according to its paradigm shift. In the first period of rural planning lay emphasis on food self-supply, antipoverty and improvement of living condition. In the second period of rural planning lay emphasis on food self-supply, green revolution and income gap mitigation between urban and rural areas. In the third period of rural planning lay emphasis on integrated rural development. In the fourth period of rural planning lay emphasis on multifunctionality of agriculture. In the fifth period of rural planning Korea government announced a new policy and lay emphasis on balanced national development. Food supply used to be most important function of rural areas, but it is weakened in recent days. The role as axis for balanced national development become another important function of rural areas.

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A Study on Evaluation Construct Model Extraction of Building Exterior Lighting applying Media Facade and Image Evaluation (미디어파사드를 적용한 건축외관조명의 평가구조 추출 및 이미지 평가에 관한 연구)

  • Kim, Seong Hui;Park, Ji-Yung;Lee, Jin-Sook
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.29 no.5
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    • pp.1-12
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    • 2015
  • In this study, we derive an evaluation structure and 18 Valuation vocabulary for the media facade lighting conditions. In addition, this study deduced the applicable elements that could be applied in time of building nightscape lighting design using media facade by conducting affective evaluation. The research results are as follows: It was found that the image axis of "Dynamic, Colorful" showed the lighting change speed was fast with diverse application of lighting color, and its evaluation object applied by general emphasis, vertical emphasis, partial emphasis lighting method was highly assessed. In addition, it was found that "Luxurious, Unusual" axis showed lighting change speed was slow with the application of lighting color in warm hue series, and its evaluation object applied by line lighting, dot lighting, general emphasis lighting methods was highly assessed. Lastly, it was found that "Soft, Secure" image axis showed the lighting change speed was slow with the application of pastel tone lighting color, and the evaluation object applied by general emphasis lighting method was highly assessed.

DRAM bus system을 위한 analog calibration 적용 Pre-emphasis Transmitter

  • Park, Jeong-Jun;Cha, Su-Ho;Yu, Chang-Sik;Gi, Jung-Sik
    • Proceedings of the IEEK Conference
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    • pp.653-654
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    • 2006
  • A Pre-emphasis transmitter for DRAM bus system has achieved 3.2Gbps/pin operation at 1.8V supply voltage with 0.18um CMOS process. The transmitter has 800MHz PLL to generate 4 phase clocks. The 4 phase clocks are used for input clock of PRBS and multiplexing. One tap pre-emphasis is used to reduce inter symbol interference (ISI) caused by channel low pass effects. The analog calibration makes the optimized driver impedance independent with the PVT variation.

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