This study was conducted to investigate the effects of the slaughtering age on carcass characteristics and economic efficiency of Holstein steers. The Holstein steers (n=27, 4 months old, average body weight 160 ㎏) were divided into 3 groups and raised with TMR feeding formulation until 18, 20 and 22 months old, respectively. In the result, final body weights were 703, 768 and 804 ㎏, and average daily gains were 1.32, 1.32 and 1.27 ㎏, respectively. Dry matter intakes (DMI) were 8.62, 8.94 and 9.24 ㎏. Feed conversion ratio was 6.53, 6.77 and 7.28 for 18, 20 and 22 months old groups. Feed conversion ratio was increased as the fattening periods increased. In yield traits, carcass weight was significantly lower in 18 months old group compared to other groups (p<0.05). The back fat thickness were 8.4, 7.3 and 7.8 ㎜, rib eye area were 70.6, 73.4 and 73.84 ㎠, and the meat yield index was 62.9, 62.5 and 62.1 when slaughtered at 18, 20 and 22 months old, respectively. In the frequency of the yield grade (A:B:C, %), grade B was highest at 20 months old group as 0:75:25. In the quality traits, marbling score, texture and maturity were not different among slaughtering age groups. However, marbling score tended to be increased at 22 months old group. Meat color and fat color were higher at 22 months old group compare to other groups (p<0.05). In the frequency of the quality grade (1+:1:2:3,%), 22 months-old group was the greatest as 12:0:50:38. The income was highest for 20 months old group as 279 thousand wons among the 3 groups. Therefore, the slaughtering ages of Holstein steers may be appropriate at 20 months old.

본 연구는 양돈농가의 사료비 절감을 위해 국내 대표 사료작물인 청보리(유연보리)를 이용하여 양돈용 일반배합사료에 첨가 가능성을 조사하고자 실시하였다. 실험에 사용된 청보리 발효사료는 총체보리를 밀 봉하여 사일리지 형태로 제조하여 보관하였고, 3mm 이하로 분쇄하여 시험사료로 이용하였다. 공시동물은 평균체중 77.71 kg인 3원교잡종 비육돈 72두를 공시하여 돈방 당 6두씩 3반복으로 실시하였다. 처리구는 일반배합사료(대조구)에 청보리 발효사료를 1%, 2% 및 3% 첨가하였고, 42일간 급여하여 종료하였다. 청보리 발효사료 급여는 성장 및 일당증체량에는 영향을 주지 않았지만, 청보리 발효사료 3% 첨가구에서 일일 두당 사료섭취량은 유의적으로 감소하였고(p<0.05), 도체등급에서는 상위등급 출현율이 높았다(p<0.05). 경제성 조사에서 청보리 발효사료 첨가는 일일 두당 사료비를 약 0.55~8.65% 절감하였고, 특히 3% 첨가구에서 사료비 절감 효과가 가장 높았으며, 청보리 발효사료 2% 및 3% 급여구에서 도체가격이 각각 1.53% 및 6.25% 정도 높았다. 따라서 청보리 발효사료 첨가급여는 사료비 절감과 도체등급을 개선하는 것으로 나타났다.

본 연구는 흑염소 비육에 있어서 조사료원이 볏짚 단용인 경우 농후사료 급여수준이 흑염소의 사료섭취량, 체중변화, 도체특성 및 경제성에 미치는 영향을 구명하기 위하여 실시하였다. 비육 흑염소 40두를 공시하여 농후사료 급여수준을 체중의 1.5% (T1), 2.0% (T2, 농가관행), 2.5% (T3) 및 자유채식구(T4)로 나누어 급여 하였고 조사료는 볏짚을 자유채식 시켰으며그 결과는 다음과 같다. 볏짚인 조사료 섭취량은 농후사료 급여수준이 증가 할수록 감소하였으며, 흑염소의 일당증체량은 체중대비 농후사료 급여수준 1.5, 2.0, 2.5% 및 자유채식구가각각 22, 50, 69 및 94 g으로 농후사료 급여수준이 증가할수록 유의적으로 증가하였다(p <0.05). 비육 흑염소의 도체율은 농후사료 급여수준을 체중비 1.5, 2.0, 2.5% 및 자유채식 시켰을 때 각각 41.77, 42.78, 46.12 및 49.78%로농후사료 급여 수준이 증가할수록 증가하였으며(p<0.05), 지방률도 농후사료 급여수준이 증가 할수록 유의적으로 증가하였다. 경제성 분석에서는 농후사료 급여수준이 증가할수록 소득은 증가하였으며, 자유채식구가 두당 34,270원으로 가장 소득이 높았다. 이상의 결과를 종합적으로 고려할 때 조사료 자원이 볏짚 단용일 경우 비육 흑염소의 농후사료 급여 수준은자유채식 시키는 것이 사료이용성, 발육, 도체율 및 경제성에서 가장 유리할 것으로 사료되며, 흑염소의 비육을 위한 조사료 자원으로서볏짚 단용은 농후사료비의 가중을 가져오므로앞으로는 흑염소 비육을 위한 새로운 조사료자원의 개발이 필요하다고 하겠다.

The objective of this study was to identify the effects of various environmental effects associated with performance testing results in pig population of domestic pig breeding farms. Performance test data collected from 2,000 to 2,010 were a total of 265,901 heads. By breeds, data consisted of Duroc, Landrace and Yorkshire. Environmental factors considered in models were breed, sex, farm, year of test, season of test, and parity. Broad range of age at testing day averaged at 155 days of age were grouped as A (up to 140 days) B (141~150 days), C (151~160 days), D (161~170 days), and E (greater than 170 days). Traits analyzed were ADG, days to 90 ㎏, end weight (body weight at the test day), rib eye area, back fat thickness. Age group effects were all significant for all the traits studied (p<0.05). As ages at test day get greater, ADG, days to 90 ㎏ and end weight tended to be greater while ultrasound measures of rib eye area and back fat thickness tended to be less. This would be the results of linear age adjustments on ultrasound measures, that caused overestimation in younger age groups and underestimation in older age groups than in average age group (C). This was evidenced by looking at ultrasound measures before linear age adjustments were applied. We conclude that, for more accurate performance testing, testing within guided age interval should be abided. And further researches should be made on biologically justifiable methods of age adjustments especially for ultrasound measures.

In the past ten years, the trade between China and South Korea has developed significantly, and there have also been corresponding progress in environmental protection, tourism, etc., which makes the economic and trade development prospects between the two countries bright. Since the financial crisis in 2008, the growth rate of the global economy has relatively slowed down, while the trade cooperation between China and South Korea has been further expanded. the trade cooperation has positive and progressive significance for the economic development of both countries. However, the current spread of protectionism between China and South Korea in trade has led to the gradual intensification of market competition, coupled with historical factors and other reasons, which have greatly affected the healthy development of trade between the two countries. Therefore, this paper mainly studies the economic effects between China and South Korea from the perspective of global value chain.

This study aims to investigate the effects of restrictions in economic activity on the spread of COVID-19 in the Philippines. This research employs daily time-series data of confirmed new COVID-19 cases, Apple mobility trends (i.e., use of public transport to destinations, volume of people driving, and amount of walking to destinations) and Google community mobility (i.e., visits to transit stations, visits to workplaces, and staying-at-home) indicators covering the period February 17 to September 11, 2020. The analysis starts by establishing the correlation pattern of new confirmed COVID-19 daily infections to each independent variable. The results show negative linear correlation of the number of new COVID-19 daily infections with less visit to transit station, increase stay-at-home, less use of public transport, and less amount of walking to destinations. Interestingly, the number of new COVID-19 daily infections indicates some form of positive linear correlation with visits to workplaces and volume of people driving. Moreover, employing robust least square regression via the method of MM-estimation, major findings reveal that across mobility measures, staying-at-home has the highest impact on reducing the spread of COVID-19, followed by visiting transit stations less, less use of public transport, less amount of walking, and less workplace visits.

This paper investigates the influence of the economic integration exemplified by the Eurasian Economic Union on the entrepreneurial ecosystem in the Kazakhstan corporate sector. Using data collected from 204 small-, medium-, and large-sized Kazakh companies, the researchers analyzed the collected data with percentile. Findings of this study show that small- and medium-sized enterprises, especially in the tertiary sector of the Kazakh economy, are not that much affected by regional integration, whereas large firms have been significantly impacted. The originality of the paper is threefold. First, the research explores the entrepreneurial ecosystems in its focus on geographic location or digital technologies that came across mainly from the ICT space. This is becoming pervasive across mechanical systems, communications, infrastructure, and the built-up environment. Second, the originality of the paper lies in focusing on the entrepreneurial ecosystems’ influence on the business processes by clearly understanding the regional, national, and international trends in different markets. Third, the paper is first of its kind to contribute an updated perspective on the entrepreneurial ecosystem’s influence on economic integration to the policymakers of Kazakhstan. Policymakers will gain expertise on how to manage network effects while planning investment projects, as well as transactions, modes, and fixed nodes, acquisition, and greenfield investments.

This paper investigates how economic freedom affected firm investment in Vietnam. In the globalization decade, economic freedom has been an important policy to support economic development in Vietnam. Improvements in economic freedom, such as capital freedom and domestic credit freedom, allow firms to access external finance more easily, so that the firm’s investment depends less on internal cash flow. In a developing country, on the drawbacks, many small and medium firms likely have more challenges if the government would not give any subsidies. The higher level of freedom may exacerbate the financing constraints of less competitive firms. We analyze unique firm-level data from 2006 to 2016, which includes listed firms on two major stock exchanges and unlisted firms in the Unlisted Public Company Market. The article also considers how economic freedom affects small firms and large firms differently. Our results show that capital freedom and domestic credit freedom played an important role in investments for Vietnamese firms. However, we cannot find evidence that overall economic freedom relaxed the financial constraints on firms. Additionally, we suggest that small firms likely gain more advantage in access to external finance than do larger firms when the government removes restrictions from capital movement and the domestic credit market.

대외무역은 경제성장의 엔진이라는 이 관점은 일찍이 국제무역이론이 형성되기 시작했을 때부터 이미 보편적으로 인정을 받았다. 특히 경제글로벌화의 큰 배경에서 경제발전에 대한 대외무역의 추진역할 이 갈수록 중요해지고 뚜렷해졌다. 일정한 무역규모에서 다른 상품무역구조가 경제발전에 미치는 영향의 차이는 매우 크다. 한중 양국의 상품무역구조가 양국의 경제발전에 어떤 영향을 미쳤는가를 본 연구에서는 주로 논술하고 논증을 한다. 국제 경제의 흐름에 따라 한중 양국은 끊임없이 자체 무역구조를 보완하고 경제 발전을 가속화하기 위해 노력하고 있다. 각 상품의 구성과 부가가치를 보면 기술 함량과 부가가치가 낮은 일차제품은 국제 시장에서 경쟁력이 약하고 기술 함량과 부가가치가 높은 공업완제품은 가치가 높아 국제시장에서 경쟁력이 강하다. 일차제품과 공업완제품이 무역 총액에서 각각 차지하는 비율을 비교하면 국가 무역 구조의 좋고 나쁨을 알 수 있다. 상품무역구조가 국가의 경제발전에 영향을 미치는 반면 무역과 상품무역구조는 밀접한 관련이 있음을 알 수 있다. 이에 따라 일차제품과 공업완제품이 무역에서 각각 차지하는 비중을 따져 국가경제발전을 연구하고 있다.

Purpose: The AEO (Authorized Economic Operator) program, created in 2001 in the United States due to 9.11 terrorist’s attack, fundamentally changed the trade environment. Korea, which introduced AEO program in 2009, has become one of the world’s top countries in the program by ranking 6th in the number of AEO certified companies and the world’s No. 1 in MRA (Mutual Recognition Agreement) conclusions. In this paper, we examined what trade-economic and non-economic effects the AEO program and its MRA have in Korea. Research design, data and methodology: In this study we developed a model to verify the impact between utilization of AEO and trade-economic effects of the AEO and its MRA. After analyzing the validity and reliability of the model through Structural Equation Model we conducted a survey to request AEO companies to respond their experience on the effects of AEO program and MRA. As a result, 196 responses were received from 176 AEO companies and utilized in the analysis. Results: With regard to economic effects, the AEO program and the MRA have not been directly linked to financial performance, such as increased sales, increased export and import volumes, reduced management costs, and increased operating profit margins. However, it was analyzed that the positive effects of supply chain management were evident, such as strengthening self-security, monitoring and evaluating risks regularly, strengthening cooperation with trading companies, enhancing cargo tracking capabilities, and reducing the time required for export and import. Conclusions: When it comes to the trade-economic effects of AEO program and its MRA, AEO companies did not satisfy with direct effects, such as increased sales and volume of imports and exports, reduced logistics costs. However, noneconomic effects, such as reduced time in customs clearance, freight tracking capability, enhanced security in supply chain are still appears to be big for them. In a rapidly changing trade environment the AEO and MRA are still useful. Therefore the government needs to encourage non-AEO companies to join the AEO program, expand MRA conclusion with AEO adopted countries especially developing ones and help AEO companies make good use of AEO and MRA.

The paper examines the effects of Foreign Direct Investment (FDI) on the economic growth of Lao People's Democratic Republic (Lao PDR) between 1993 and 2015. The investigation is based on the influence of growth and economic absorptive capability determinants such as human capital, trade openness, and institutional quality. The methodological analysis uses a multivariate framework accounting capital stock, labor stock, FDI, human capital, trade openness, and institutional quality in regression of the Vector Autoregressive model. Augmented Dickey-Fuller unit root test, Johansen Cointegration test, and Granger Causality test were applied as parts of the econometric time-series analysis approach. The empirical results demonstrate the positive effects of FDI and trade openness, and the negative effects of human capital and institutional quality on the economic growth of the Lao PDR over the 1993 to 2015 period. The findings confirm that trade openness complemented by a sufficient level of infrastructure, education, quality institutions, and transparency significantly influence economic growth and attract more FDI. Research results lend credence to the need for the Lao PDR’s government to focus on improving its economic absorptive capability and economic competitiveness regionally and globally by improving wealth and resource management strategies, as failure to take this course of action could lead to the Dutch Disease effects.

The paper aims to investigate relationships between technology and innovation management, total factor productivity and economic growth in China. By comparing the trends in total factor productivity growth of industrialized economies (i.e. OECD), this study intends to showcase the importance of total factor productivity progress in the Chinese economy. The study employs time series data of an annual basis for the period from 1977 to 2016 retrieved from the World Development Indicator. The study employs unit root test, cointegration test, fully modified least squares estimation method, canonical cointegrating regression and dynamic least squares estimation method to test the hypotheses. The results of the cointegrating regression analysis show that manufacturing growth leads to an increase of total factor productivity in the short-run in China. The findings of the study suggest that manufacturing (i.e. technology and product innovation) is positively related to the increase of total factor productivity in the short-run and total output growth in the long-run. The findings suggest that promoting technology and innovation management and supporting R&D subsidies may reduce the marginal cost of conducting R&D and increase the rate of technology and innovation management and R&D activity and therefore, the total factor productivity growth rate.

This study analyze the economic effect of chemical fertilizer. We used the input and output data, and the analysis variables include production output nitrogen, phosphoric acid, potassium, seeds, and labor. The main results are as follows. First, for spring potatoes, potassium increases to a certain level of output, but over a certain stage, the output decreases as the input increases. Optimal use of potassium in the calculation of spring potatoes can achieve the effect of reducing input costs and increasing output simultaneously. Second, radish In autumn, nitrogen increases to a certain level, but over a certain stage it represents a reverse U-shaped relationship in which output decreases as input increases. This means that reducing the amount of fertilizer input increases the output. This means that soil-related agricultural big data can contribute to the management of nutrients and greenhouse gas reduction in agricultural land.

Global issues, such as resource depletion, reduction of greenhouse emissions, etc., have been raised. Environmental issues regarding resources and energy are addressed by various industries that provide products and services. However, industries related to the environment have been separated and controlled. Industries related to the environment exist internationally. The Initiative of the environmental industry is the same as the final objective for protecting the environment, but it is different according to the subcategories or indicators of the industry. In this study, the economic effects of the uni-materialization-related industry on Korea by using the inter-industry related to the pollution prevention were analyzed in accordance with using I-O methodology, reflected by a sector of I-O. This study analyzed the unimaterialization industry being specified as exogenous in order to identify the economic effects of the industry on other industries, using the 2014 I-O table data. The economic effects include production, value-adding and employmentinducing, supply-shortage, price-pervasive, and analysis of inter-industrial linkage. The results of the analysis concluded that primary metal products are highest in the production-inducing effect, whereas wholesale and retail trade is the highest in value-added inducing and employment-inducing effects. Construction is the highest in the supply-shortage effects, and other precision instruments are the highest in price-pervasive effects. Based on these results, although the unimaterialization- related industry plays a large role in intermediary products, it is necessary to promote investment in materials and components industries to increase the technological competitiveness of the uni-materialization-related industry that are still highly dependent on imports. Also this study has a limitation that draws economic effects of the industry related to exact resource circulation because of no systematic categories of environmental industries.

This study analyzed whether there are mediating effects of government policies between the inputs and the economic performances of Korean bioenergy companies-this was accomplished by applying a mediating analysis by PROCESS Macro ver 2.16.3 (Hayes, 2013) based on a survey from the bioenergy companies. The analysis found that the increase in inputs of the Korean bioenergy companies affected the increase of performance through the government policies. In addition, comparing the mediating effects of detailed policies, this study found that said effects were greater in the order of RPS(Renewable Portfolio Standard) > the price variation of electricity = the obligation of greenhouse gas reduction > the changes in business scale based on RPS·RFS(Renewable Fuel Standard). However, it was found that the price variation of transportation fuels and RFS did not make a significant difference. There are two political implications of this study. First, to enhance the economic performance of bioenergy companies, the Korean government should keep the expanding trend of the current RPS. Second, the government needs to emphasize the importance of biofuels for transportation and make policies to develop related industries.

The purpose of this study is to present operating directions of school food service center (SFSC) for development of environment-friendly agricultural producers (EFAP) and regional agriculture. Of eight SFSCs being operated in Chungcheongnam- do, this study analyzed situations of three cases, Cheonan, Asan and Hongseong. The analysis on operation situations revealed that all the three cases had positive economic effects on EFAP in the aspect of low commission and fixed supply price for a given period. The survey showed that social and economic changes since participating in the SFSC were largest in Asan. The awareness of the economic effects was largest among the producers in Cheonan.

항만은 단순히 화물을 적재하고 하역하는 것뿐만 아니라 전 세계적 생산 네트워크 및 복잡한 공급망 내에서 중요한 역할을 하는 허브로 발전해 왔다. 항만은 지역적 수준에서 국가적 수준에 이르기까지 다양한 부가가치 생산 및 고용 창출에 기여하고 있으며, 이러한 점은 항만 및 항만 이해관계자에게 중요한 이슈가 되고 있다. 본 연구는 회귀모델을 활용하여 부가가치 및 고용수치에 대한 정보가 미비한 이탈리 아 내 항만 17곳의 부가가치 및 고용효과를 분석하는 것이 목적이다. 이탈리아 항만 시스템 개선의 측면에서, 본 연구는 해당 항만들의 효과 와 지역경제 내에서의 역할을 측정할 수 있는 도구를 개발하여 해당 항만의 정책 입안자들이 활용할 수 있도록 하였다. 본 연구에서는 모든 이탈리아 항만들이 지역 경제에 간접적 효과보다는 직접적 효과에 더 영향을 받는 것으로 조사되었으며, 대형 항만에서는 더 큰 사회경제적 효과가 발생하는 것으로 분석되었다.

This paper estimates the impact of terms of trade(TOT) on economic growth and inflation for seven Asian countries. We find that for China, India, Indonesia, Malaysia, Pakistan, Philippines, the deterioration of TOT can promote economic growth. In the case of the improvement of TOT, the domestic price tends to decrease in Philippines and Turkey. In contrast, CPI in countries such as China, India, Indonesia, Malaysia and Pakistan rises because of the improvement of TOT. According to the results which are based on the VEC model, we can conclude when the TOT of China, Indonesia, Pakistan and Philippines is not so appropriate from the long-run equilibrium, the economy can also turn back to the equilibrium by error correction process. And there are statistically nonsignificant trends toward the influence of long-terms economic balance to real GDP per capita of India and Malaysia. As for the situation of CPI in India and Pakistan, when TOT is impacted, the economy can still turn back to the equilibrium by error correction process. But the adjustment coefficient of China, Philippines and Turkey is not so significant in statistics.

글로벌금융위기 이후 우리나라 해운산업은 기업퇴출, 자본잠식, 법정관리 등 다양한 형태로 불황을 맞고 있다. 경기변화에 민감하 고, 선박확보에 거대자본이 요구된다는 점을 감안할 때 자본구조의 최적화는 기업가치를 극대화할 수 있는 기초가 되고, 기업부실화를 극복할 수 있는 수단이 될 것이다. 이에 본 연구는 선행연구들을 바탕으로 10년 이상 적격 감사보고서를 제출한 국내 46개 해운기업을 대상으로 자본 구조와 기업특성 간 관계를 해운경기변화를 고려하여 규명해보고자 하였다. 실증결과, 국내 해운기업의 자본구조는 기업규모, 자산유형화정 도, 수익성, 비부채성세금효과 등과는 부(-)의 관계가, 성장성은 정(+)의 관계가 있음 실증되었다. 해운경기반영 모형별 진단에서는 상대적으 로 불황기모형은 전체기간 분석결과와 큰 차이를 보이지 않은 반면, 상대적 호황기모형에서는 유동성이 추가적으로 유의하였으며, 비부채성 세금효과와 성장성은 유의하지 않음을 확인할 수 있었다. 또한, 글로벌 상장해운기업을 대상으로 한 기존연구들과 연구결과에서 큰 차이는 없 었으나, 비부채성세금효과, 선박유형화정도, 성장성이 국내 해운기업에 추가적으로 유의함을 확인할 수 있었다. 하지만, 국내 해운기업의 자본 구조관련 연구를 보다 강화하기 위해서는 목표부채비율, 조정속도 등의 연구가 추가적으로 진행될 필요성은 있을 것이다.

본 논고는 고양 정수장과 구미 정수장으로부터 물을 공급받고 있는 5개 도시(고양, 파주, 구미, 김천, 칠곡)를 대상으로 고도정수처리 도입의 경제적 편익을 평가하였다. 지불가능금액(WTP) 추정을 위한 방법으로는 이중경계 양분선택형 CVM을 이용하였다. 특히 평균 WTP 추정값을 도출하기 위한 방법으로 모수 추정법 중 구간 데이터(interval-data) 모델을 이용하였다. 고도정수처리 서비스에 대한 추가 지불 WTP(평균)는 공변량을 포함한 모델을 적용하였을 경우 톤당 231.3원이, 공변량을 포함하지 않은 모델을 적용하였을 경우에는 231.2원인 것으로 추정되었다. 한편 추정된 WTP와 함께 고양 및 구미 정수장으로부터 공급받는 수돗물 공급량(각각 59.675 백만 m3/년, 93.734 백만 m3/년)을 고려하여 정수장별 고도정수처리의 경제적 편익을 도출한 결과 고양정수장은 약 138억 원/년이, 구미 정수장은 16.8억 원/년으로 추정되었다. 그리고 설비의 내구연한을 10년으로 가정할 경우, 비용 대비 편익 비율은 고양정수장이 3.7, 구미정수장이 2.1로 조사되었다. 수도사업 관련 고도정수처리 도입은 공공사업의 한 유형으로, 이는 경제적 편익 및 비용이 동시에 고려되어야 할 정책적 사업이다. 이러한 의미에서 본 연구의 산출물인 고도정수처리의 WTP는 정책결정자의 수질개선 관련 의사결정에 기초 자료가 될 것이다.