검색연산자 | 기능 | 검색시 예 |
---|---|---|
() | 우선순위가 가장 높은 연산자 | 예1) (나노 (기계 | machine)) |
공백 | 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 | 예1) (나노 기계) 예2) 나노 장영실 |
| | 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 | 예1) (줄기세포 | 면역) 예2) 줄기세포 | 장영실 |
! | NOT 이후에 있는 검색어가 포함된 문서는 제외 | 예1) (황금 !백금) 예2) !image |
* | 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 | 예) semi* |
"" | 따옴표 내의 구문과 완전히 일치하는 문서만 검색 | 예) "Transform and Quantization" |
To evaluate the historical changes and future counterplan of food culture in Korea . the following were surveyed : the scale of foodseivice industry. the consumer attitude on functional health food. the fancy and using frequency of fastfood in the growing generation, the actual state on use of imported food. consumer opinions in selecting factor of functional and organic foods. the actual state and consumer attitude on the imported foods, long-term prospect of food service industry in futures. the production of food rubbishes and their reusing rates. the production scales and toxicity problems of agricultural medicines including the postharvest agricultural medicine. the consumer anxiety such as potential environmental and human health risks associated with GMOs (genetically modified organisms) and the import state of GMOs, long-term prospect of population increase in world, and aged population of over 65 years and their social index in Korea, self-supporting rate and national security of food in Korea. the prospect for demand and supply of grains in Korea and world. decrease of the farming population and the decrease problem of agricultural productivity. the problem on the introduction of direct payment system for a farmhouse, and other social problem etc. In cases of 1996, self-supporting rate of food in Korea was the lowest as
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