중국의 농업 개혁과 농정 변화

정정길(Chung Chung-Gil) 대한중국학회 2004 중국학 Vol.22 No.-

  After Deng ShaoPing Administration, China achieved splendid developments in various spheres such as political, economic, and social areas. In particular, the production volition of farmers and productivity in the agricultural area were greatly improved by the reform measures such as lowering prices of farm products, introducing the responsibility system of production, and demolishing people"s communes. Under this background, Chinese government tries to develop export potential power of agricultural products.   At the present in time, agricultural reform in China was evaluated as successful. Market economy adopted made agriculture developed. The rapid increase in agricultural production could come to an end the shortage of supply. Also, many changes occurred in the rural areas. Adjusting industrial structure in the rural areas, Chinese government make agriculture diversified from simple cultivation to various areas such as agriculture, forestry, fishery, and stock-farming and furthermore oriented toward the industries.   The key purpose of this study strives for searching some implication about Chinese agricultural policies through analyzing changes and recent trend in Chinese agricultural policies and forecasting its future.

드럼 세탁기용 유도전동기의 효율운전에 관한 연구

정정길(Jeong Jeong-Gil),이원철(Lee Won-Chul),배우리(Bae Woo-Ri),원충연(Won Chung-Yuen),장봉안(Jang Bong-An),양하영(Yang Ha-Yeong) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.5월

In home appliances, electric energy is optimally controlled by using power electronics technology, creating a comfortable environment in terms of energy saving, low sound generation, and reduced time consumption. Usually simplicity and robustness make the three phase induction motor attractive for use in domestic appliance, including washing machines. Two main types of domestic washing machine have evolved. We focus on the front loading machine favored in Europe, which has a horizontal drum axis. With the advent of electronic control, universal motor, with a phase controller operating directly from the ac source, has become popular in washing machine. The efficiency improvement in home appliances is very important for customers. Induction motor efficiency can be improved by means of loss reduction, which can be realized by motor selection and design, improvement of the waveforms supplied by power inverter, utilizing a suitable control method. So this paper describes the architecture and feature of washing machine fed induction motor drive under minimizing losses vector control.

암성 통증 치료를 위한 경막외 카테터 터널 거치법

이정구(Jung Koo Lee),정정길(Jung Gil Chung),전재규 대한통증학회 1991 The Korean Journal of Pain Vol.4 No.2

N/A Continuous epidural analgesia with intermittent morphine injection is a good technique for the management of intractabie cancer pain. Since epidural tunnelling was introduced for the first time to our institution in 1988, it has been widely used for the cancer pain management. Recently epidural tunnelling was intro- duced for the keeping an inserted catheter for a long period of time. Twenty-five patients with terminal cancer had been used an epidural tunnelling at the pain clinic of Dongsan Medical Center during the period of 3 months in 1991. Among the 25 patients, l4 were male and 11 were female, and most of them were at the ages of 6th decade. The causes of pain were from stomach cancer in l2, CBD cancer in 3, hepatoma in 2, pancreatic cancer in 2, uterine cervical cancer in 2, and miscellaneous cancer in 4 cases respectively. The outcome of treatment were excellent results in 14(56%), good in 9(36% ), and moderate in 2.patients(8%). Accordingly satisfactory pain relief was achieved in 92% of the patients. It is suggested that this long-term management of intractable cancer pain by epidural bupivacaine and morphine with epidural tunnelling is satisfactory and reliable.

복강신경총 차단시의 조영제 확산

이정구(Jung Koo Lee),정정길(Jung Gil Chung),이성문 대한통증학회 1994 The Korean Journal of Pain Vol.7 No.2

N/A Celiac plexus block is performed to relieve intractable upper abdominal cancer pain. Gener- ally, celiac plexus blocks have heen performed under control of X-ray fluoroscopy to determine the position of the needle tip and the spread of contrast media. During the period from March 1992 to February l994, we have performed 21 cases of neurolytic celiac plexus block to alleviate pain of intra-abdominal malignancy. We retroapec- tively evaluated the location of the needle tip and the spread of contrast media. P-A views of simple abdomen demonstrated the locations of the needle tip: 66.7% of the left needle tips were in upper 3/l of Ll (6 cases) and T12-Li interspace (8 cases), 50% of the right needle tips were in upper 1/3 of L, (6 cases) and T,-L1 interspace (4 cases). Contrast media from the right needle spread upward to middle 1/3 of T10 (5 cases) and middle 1/3 of T1 (5 cases), downward to middle 1/3 of L, (6 cases) and lower l/3 of L1 (3 cases). Contrast media from the left needle were spread upward to middle 1/3 of T10 (5 cases) and evenly to other spaces, downward to middle l/3 of L, (4 cases) and L,-L interspace (6 cases). We analyze the spread of contrast media according to distance from needle tip by authors score system.Contrast media of right needle spread upward 6.1 and downward 3.4, that of left needle spread upward 6.5 and downward 3.7.

지속적 경막외 차단중 발생한 세균성 뇌막염

이정구(Jung Koo Lee),정정길(Jung Gil Chung) 대한통증학회 1994 The Korean Journal of Pain Vol.7 No.1

Bacterial meningitis is a rare complication of epidural block. As epidural abscess, subarach- noid infection associated with epidural catheters are related to the treatment of pain in diabet- ic patient whose immune responses have been impaired. A 51-year-old male with non-insulin dependent diabetes came to the pain clinic with neuro- pathic gain on right thigh and amputated stump of right leg. Treatment consisted of continu- ous epidural block and subcutaneous tunnelling and epidural morphine with bupivacaine was given on an outpatient basis. Two months later, the patient noted a diffuse frontal headache, projectile vomiting and stiffness neck. These symptoms became more aggrevated over the fol- lowing 24 h and temperature went up to 38.4 ℃. A diagnostic lumbar puncture revealed CSF total protein of 747 mg/dl, glucose of 43 mg/dl, and 4320 WBC/mm. Cultures of epidural cathe- ter tip grew hemolytic staphylococcus epidermidis. A chest x-ray and brain CT scan were neg- ative. Antibiotic therapy with penicillin G and chloramphenicol was given for 15 days. Recov- ery was uneventful.

PWM 기법을 이용한 인버터-유도전동기 구동 시스템의 전도 노이즈 및 스위칭 소음 저감

박현석(Park Hyun-Seok),김이훈(Kim Lee-Hun),정정길(Jeong Jeong-Gil),천광수(Chun Kwang-Su),원충연(Won Chung-Yuen),함년근(Hahn Nyon-Kun),신한순(Shin Han-Soon) 전력전자학회 2003 전력전자학술대회 논문집 Vol.2003 No.11

The random pulse width modulation(RPWM) on the noise and vibration abatement in inverter-fed induction motor drive is presented.<br/> This paper describes a RPWM technique based on space vector PWM strategy for shaping the switching noise spectrum in such a way it can merge with the natural system noise.<br/> To verify the validity of the proposed RPWM scheme, the experiment based on the TMS320 C31 microprocessor was executed.<br/> Finally, the simulation and experimental results will be given to demonstrate the effectiveness of the proposed RPWM technique.

종자산업의 동향과 국내 종자기업 육성 방안

박기환(Ki-Hwan Park),박현태(Hyun-Tae Park),정정길(Chung-Gil Chung),유일웅,신종수 한국농촌경제연구원 2010 한국농촌경제연구원 정책연구보고서 Vol.- No.-

The seed industry is evolving to become an industry where technologies of advanced bioscience, such as medicine and materials industry, can be utilized. Developed countries are increasing their support for the seed industry, and global seed companies are actively consolidating and expanding their business through mergers and acquisitions, investing heavily in R&D to secure original technologies. However, despite such changes in the external environment of the world seed industry, the market size of the domestic seed industry has remained flat even after the M&As by global seed companies. Moreover, as domestic seed companies are petty in scale, their global competitiveness remains weak. Under this background, this research was carried out to present ways of developing the domestic seed industry and seed companies by finding out the industry"s problems and reviewing the developments surrounding leading seed producers in developed countries. Seed sovereignty is expected to increase through the securement of genetic resources, and globally leading seed producers are expected to make progress in consolidating and expanding their business. Therefore, the development of the Korean seed industry should be sought in such a way that would allow it to respond to such trends. In other words, the direction of the domestic seed industry’s development should be set on achieving the following goals: ① integration and convergence with other industries, ② promoting the industry as a promising future industry through export growth, and ③ fostering of globally-competitive, seed-specializing companies. Revitalization of domestic seed companies is especially important since it is possible to improve the industry"s global competitiveness by fostering private companies. In order to foster domestic seed developers, the following measures need to be taken: first, expand the seed market by transferring the control of staple crops to the private sector; second, raise the private sector"s capability by utilizing individual seed developers and fostering human resources; third, build a domestic base for seed production and expand support; fourth, induce seed companies to achieve economy of scale by stimulating export; and fifth, increase protection of seed developers by making the seed variety protection system effective. In developed countries, it may be possible that government role or support does not have significant effect on seed companies. However, in the case of Korea where the seed industry is immature, the industry cannot grow without adequate support from the government. Therefore, the current government measures to foster the seed industry have to be carried out without hindrance, and improvements should be made in consultation with related entities.

무역자유화가 대만 육류소비자 후생에 미치는 영향 분석

정정길 한국농업경제학회 1997 農業經濟硏究 Vol.38 No.1

韓國과 中國의 林産物 國際競爭力

張哲洙,張宇煥,鄭靖吉 한국산림경제학회 2002 산림경제연구 Vol.10 No.2

WTO 출범으로 세계 경제가 무역자유화를 통한 하나의 시장으로 빠르게 통합되고 있다. 특히 중국의 WTO가입은 세계무역뿐만 아니라 우리나라 임산업에도 크게 영향을 미칠 것으로 예상된다. 이러한 세계적 조류속에서 우리나라 임산업이 발전하기 위해선 경쟁력을 높여 나가는 것 외에는 대안이 없다. 여기에서는 우리나라 주요 수출임산물을 대상으로 한ㆍ중 임산물이 세계시장에서 갖는 국제 경쟁력, 상대국 또는 제3국에 대한 수출의존도, 상대국 또는 제3국 시장에서 보여주고 있는 상대적인 경쟁력, 그리고 각 국의 수입의존도 등을 비교 검토해 봄으로서 향후 우리나라 임산물의 대중국뿐만 아니라 제3국 시장으로의 수출확대를 위한 대응방안 마련에 기초자료를 제시하고자 하였다. With the launch of WTO, we can no longer think of our domestic interests and policies without reference to the wider global context. In particular, since China occuies important position in the world agriculture, forest industry, and trade, it is expected that China's joining to the WTO will substantially influence the world trade and forest industry in Korea. One alternative is to strengthen the international competition of our forest products for the development of our forest industry. In this context, the purposes of this paper are laid at the analysis on the international comparatives of some forest products in Korea and China, on the basis of Revealed Comparative Advantage Index(RCA), Exporting Dependent on a particular Country, Comparative Advantage by Countries (CAC), Market Share(MS), etc. This paper also suggests ways to strengthen the international competition of our forest producs in the market of China and Japan.

악성통증 치료를 위한 경막외 터널 카데터 거치법

정상범,전재규,정정길 대한통증학회 1988 The Korean Journal of Pain Vol.1 No.1

Recently, epidural tunnelling was introduced for the convenience of keeping a catheter inserted for a long period of time. We had 15 cases in which used epidural tunnclling for the treatment of intractable pain mainly in teminal cancer patients. 1pidural puncture with cannulation was carried out in the same technique as used for epidural anesthesia. After the subcutaneous epidural tunnelling was done from the site of the epidural entry to the anterior chest, just under the skin using a tunnclling device, the catheter was thre- aded through the tunnelling needle at the site of the outlet, was fixed and the tip of the catheter was connected to a filter. Five ml (2mg) of saline diluted morphine can be given at home as needed when intractable pain occurs. This long-term treatment of intractable pain by morphine injections through the epidural cannula place by subcutaneous tunnelling, is very convenient for the patient's daily routine and a better alternative in such a situation. Our technique, its advantages and problems were described in this paper.