• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.11 no.6
• /
• pp.111-122
• /
• 2016

Support and efforts are being strengthened at the national level for entrepreneurial activities that are expected to revitalize our economy. Generally, according to the previous studies, it is known that entrepreneurship positively affects economic growth and the reduction of unemployment rate through employment creation. The analysis of the impact of entrepreneurial activities on economic growth and job creation is mainly based on national comparative analysis. In this paper, however, the impact of start-up activities in the Busan metropolitan city on regional economic growth and employment improvement. In this study, the dummy variables were assigned to firms within three years, five years, and ten years after start-up according to the period since the start-up of the firm. As a result of the empirical analysis, the value of dummy variable of the start - up firms was found to be significant in the analysis of the sales growth rate as the dependent variable according to the preceding study by Evans(1987). Therefore, it can be seen that the growth rate of the start - up company is higher than that of the other companies and it is positive for the regional economic growth. In addition, the coefficient of the dummy variable decreases from the enterprise analysis to the latter within three years, five years, and ten years after the start-up, and confirms that the coefficient of the firm's start-up years has a negative value. I could see more clearly. On the other hand, in the analysis of the effect of start-up firms on unemployment rate reduction, the growth rate of regular workers was higher than that of other firms. This suggests that it positively affects the reduction of the unemployment rate in the region. In addition, in the dynamic analysis using the Almon estimation formula and the Koyck model, the effect of log-transformed net start-up firms on the growth rate of new workers is very significant. As a result of the above model, It is reaffirmed that start-up activity has a positive effect on employment growth.

• Korean Journal of Food Science and Technology
• /
• v.31 no.3
• /
• pp.678-681
• /
• 1999

The objective of this study was to evaluate the effect of different heating rates on the thermal properties of pork loin muscle by DSC. Pork loin muscle was subjected to programmed heating at the following heating rate: 5, 10, 20, 30 and $40^{\circ}C/min$. Peaks were progressively shifted to right side as the heating rate was increased. $T_0$ was $50.39^{\circ}C$ at $5^{\circ}C/min$ and it was increased to $57.45^{\circ}C$ at $40^{\circ}C/min$ (p<0.05). Total enthalpy was 3.52 J/g at $5^{\circ}C/min$ and total enthalpy was increased to 3.60, 4.14, 4.54 and 4.61 J/g by degrees at heating rate 10, 20, 30 and $40^{\circ}C/min$ respectively.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.33 no.9
• /
• pp.73-80
• /
• 2005

This paper addresses a newly proposed start-up method of the HAUSAT-2 momentum wheel. The HAUSAT-2 is a 25kg class nanosatellite which is stabilized to earth pointing by 3-axis active control method. A momentum wheel performs two functions. It provides a pitch-axis momentum bias while measuring satellite pitch and roll attitude. Pitch control is accomplished in the conventional way by driving a momentum wheel in response to pitch attitude errors. Precession control and nutation damping are provided by driving the pitch axis magnetic torquer. A momentum wheel is nominally spinning at a particular rate and changes speed. This simulation study investigates the feasibility and performance of a proposed strategy for starting-up the wheel. A proposed strategy to start-up the wheel shows that a pitch momentum wheel can be successfully started-up to its nominal speed from rest and be stabilized to nadir pointing.

• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.35 no.1
• /
• pp.8-14
• /
• 2002

Quality variation of jar packing of Chanran-Jeotgal produced by improved process and conventional process were investigated during storage at 10, 20, and $30^{\circ}C$, respectively. The increasing rate of pH, volatile basic nitrogen (VBN), $CO_{2}$, and viable cell counts of Chanran-Jeotgal produced by improved process was slower than that of conventional process at all storage temperature. Also the result of sensory evaluation indicate that the production of Changran-Jeotgal by improved process may extend the shelf·life of jar packing Chanuan-Jeotgal. From above results, relationship between quality parameters was concluded. In case of Changran-Jeotgal in a jar, pressure, pH, L-value, VBN and sensory score were highly correlated. Therefore, these parameters are expected to use as shelf-life indication.

• Explosives and Blasting
• /
• v.32 no.2
• /
• pp.1-8
• /
• 2014

In this study, 16 test blastings had been carried out with different spacings, burdens, drilling lengths, and charges per delay for investigating the characteristics of ground vibration propagation, which depends on the delay time. From the tests, it was possible to derive a ground vibration equation. Using the equation, the characteristics of ground vibration could be investigated by analyzing the nomogram and predicting the Peak Particle Velocity (PPV), which are influenced by the delay time and the priming location. The trend of ground vibration change depending on the delay time was analyzed for the standards charges of 0.5, 1.6, 5, and 15 kg, which were suggested in "Blasting design and construction guidelines to road construction" by the Ministry of Land, Infrastructure and Transport. From the study, it would be possible to suggest a favorable vibration control method, which depends on the charge.

• Journal of the Institute of Electronics Engineers of Korea SD
• /
• v.46 no.12
• /
• pp.36-42
• /
• 2009

This paper proposes the high-performance pipeline architecture for modified Booth multipliers. The proposed multiplier circuits are based on modified Booth algorithm and pipeline architecture which are the most widely used techniques to accelerate the multiplication speed. In order to implement the optimally pipelined multipliers, many kinds of experiments have been conducted. The experimental results show that the speed improvement gain exceeds the area penalty and this trend is manifested as the number of pipeline stages increases. It is also important to insert the pipeline registers at the proper positions. We described the proposed modified Booth multiplier circuits in Verilog HDL and synthesized the gate-level circuits using 0.13um standard cell library. The resultant multiplier circuits show better performance than others. Since they operate at GHz ranges, they can be used in the application systems requiring extremely high performance such as optical communication systems.

• Korean journal of applied entomology
• /
• v.17 no.4 s.37
• /
• pp.187-191
• /
• 1978

This experiment was conducted to determine the optimum temperature and day-length condition for laboratory multiplication of Green Rice Leafhopper, Nephotettix cincticeps Uhler, and to obtain basic information for deriving temperature dependent growth rate function. The insects which were reared in $33-35^{\circ}C$ have relatively short nymphal periods and high adult emergence rate compared with the insects which were reared in $27-29^{\circ}C$ The adults which emerged in $35^{\circ}C$ laid significantly smaller number of eggs than the adult reared in $27-29^{\circ}C$ during their nymphal stage. Day length in $29^{\circ}C$ did not have any influence to the nymphal growth, adult emergence rate and egg laying of the insect. The growth rate of the insect did not have linear relation with rearing temperature.

• 해운
• /
• s.104
• /
• pp.9-23
• /
• 2013

세계경제는 올 2분기 이후 완만한 회복세를 보이고 있다. 선진국 국가부채 문제가 점차 조정되고 있기 때문에 미국, 유로존 등 선진국이 주도하는 세계경기 상승흐름은 내년까지 이어질 전망이다. 다만 세계경기가 회복되는 속도는 빠르지 않을 것으로 예상된다. 미국 양적완화 축소로 국제금리가 오르고 신흥국 및 기업의 자금조달 여건이 악화될 전망이다. 신흥국 자금유출은 내년에도 이어지면서 금융시장 불안요인이 될 것이다. 중국도 투자조정이 지속되면서 전반적으로 개도국 경제의 활력이 과거 경기 회복기만큼 높지 못할 전망이다. 세계경제 성장률은 올해 3.1%에서 내년 3.4%.로 완만한 상승이 예상된다. 세계경제가 회복되면서 국내경기도 상승흐름을 보일 전망이다. 하반기중 정부수요는 줄어들 것이지만 민간부문의 활력이 높아지면서 올해 연간 2.8% 수준의 성장세를 기록할 것으로 전망된다. 수출이 주도하는 경기회복세는 내년까지 이어질 것으로 보인다. 수출증가로 미루어두었던 설비투자가 재개되고 가계소비도 올해보다 증가율이 높아질 전망이다. 다만 국내경기 역시 회복 속도는 빠르지 않을 것이다 선진국 적자 축소 노력으로 자국생산이 강조되면서 세계교역 증가세가 과거만큼 높지 못할 것이다. 금리상승에 따른 가계부채 부담 증가 고령층 소비성향 저하는 소비회복을 제약하는 요인이다. 올해 큰 폭으로 반등했던 건설투자도 정부의 주택공급 축소방안, SOC 예산 삭감 등으로 내년에는 다시 둔화될 전망이다. 내년 국내경제 성장률은 3.6%. 수준에 그칠 것으로 예상된다. 수요확대에 따른 인플레 압력이 커지겠지만 국제원자재 가격이 안정되면서 소비지물가는 2%대 중반 수준을 기록할 전망이다. 고용사정도 올해보다 완만하게 개선되는데 그칠 것으로 보인다. 금리는 지속적인 상승세를 보이면서 기업 자금조달 여건을 어렵게 할 것이다. 경상수지 흑자는 올해 650억달러 수준으로 사상최고치를 기록한 후 내년에도 400억달러를 넘어설 전망이다. 이에 따라 미국 양적완화 축소에도 불구하고 원화는 절상기조를 지속해 내년 원화환율은 평균 달러당 1,060원 수준을 기록할 것으로 예상된다. 다음은 LG경제연구원에서 발표한 "2014년 국내외 경제전망"의 주요 내용을 정리한 것이다.

• The Journal of the Acoustical Society of Korea
• /
• v.24 no.3
• /
• pp.150-159
• /
• 2005

This paper addresses a voice personality transformation algorithm which makes one person's voices sound as if another person's voices. In the proposed method, one person's voices are represented by LPC cepstrum, pitch period and speaking rate, the appropriate transformation rules for each Parameter are constructed. The Gaussian Mixture Model (GMM) is used to model one speaker's LPC cepstrums and conditional probability is used to model the relationship between two speaker's LPC cepstrums. To obtain the parameters representing each probabilistic model. a Maximum Likelihood (ML) estimation method is employed. The transformed LPC cepstrums are obtained by using a Minimum Mean Square Error (MMSE) criterion. Pitch period and speaking rate are used as the parameters for prosody transformation, which is implemented by using the ratio of the average values. The proposed method reveals the superior performance to the previous VQ-based method in subjective measures including average cepstrum distance reduction ratio and likelihood increasing ratio. In subjective test. we obtained almost the same correct identification ratio as the previous method and we also confirmed that high qualify transformed speech is obtained, which is due to the smoothly evolving spectral contours over time.

• The Magazine for Energy Service Companies
• /
• s.84
• /
• pp.8-11
• /
• 2013

지난 5월 28일 국무회의에서 박근혜 대통령은 "과학기술을 통한 에너지 효율성을 제고하거나 낭비를 막는 방법도 있고 스마트 그리드 같은 IT기술을 이용해서 실시간으로 자신이 얼마를 소모하는지 알려줌으로써 스스로 아껴 쓸 수 있는 방법이 있는데, 그런 방안도 적극 연구해 달라"고 당부했다. 실제로 우리 산업은 현재 ICT기술과 전력시장을 창조적으로 융합하여 새로운 시장을 형성하고, 이를 통해 신(新)성장동력, 신(新)서비스업을 육성해야 하는 시점에 직면해 있다. 전력공급에 소요되는 사회적 비용이 급증하여 빠른 속도로 증가하는 수요를 충족시키는데 많은 어려움이 있는 것도 사실이다. 늘어나는 수요에 따라 공급을 확대하는 공급중심 정책에서 합리적으로 수요를 줄인 후 공급을 확대하는 수요관리 중심의 정책으로 전환이 필요한 때이다. * 연평균 전력소비증가율('00~'10년, %) : 한국 5.3('10년 10.1), 일본 0.2, 미국 0.7, OECD 평균 1.0 최근 다각도로 전력 사용을 줄이기 위한 이벤트가 실시되고 있는데 실내온도 제한 등 일시적 절약에서 벗어나, 세계적 수준의 우리 ICT기술을 활용하여 근본적이고 시스템적인 수요관리 추진이 필요하다. 한편 전력수급 위기를 새로운 시장창출의 기회로 만드는 발상의 전환을 통해 창조경제시대의 신성장동력과 일자리를 창출하게 되는 기회가 될 수 있다. 이는 전통적인 에너지산업에 2차전지산업, 소프트웨어 산업을 융합하여 ESS, EMS, LED 등 ICT기반 에너지 신산업 시장 진출을 의미한다. 이번호에서는 ESS(Energy Storage System)라고 불리는 에너지저장장치에 대해 살펴보고자 한다.