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소하천의 광합성율 , 호흡율 및 비점원오염물농도 결정에 관한 연구
조재현 대한상하수도학회 1987 상하수도학회지 Vol.1 No.-
In eutrophic waterways, aquatic plants can cause large diurnal fluctuation in DO concentration through respiratory activity and photosynthesis. Using the DO fluctuation, DORM model and diurnal curve method calculate the metabolic rates of river ecosystems. In this study Namdae River data are used to investigate the applicability of these models. The results show that the ratios of R : P are generally high in this study area, and photosynthetic rates of lower reaches are higher than those of upper reaches. The ratios of atmospheric reaeration to gross photosynthesis show that by far the major source of DO replenishment in the Namdae River is atmospheric reaeration. The DORM model differs from existing procedures for diurnal curve method. The model uses the complete DO transport equation, including DO surface exchange, longitudinal dispersion, dependence of respiratory rates on water temperature and dissolved oxygen. As a result the DORM model is expected to be more accurate than graphical or other methods. And with these respiratory and photosynthetic rates, nonpoint source water quality is evaluated.
조재현 연세법학회 2001 연세법학 Vol.8 No.1
Of recent, there is a hot controversy on the tax probe of the National Tax Service (NI'S) into newspaper companies. The ultimate goal of the latest tax probe is hard to say in a word, but at least it can be said that tax probe is not the proper way to reform the press. Of course it is the call of the times that if there is any corruption of the press or owner of press, it must be reflected through tax probe and the press must take the responsibility for that. But reform of the press should begin with enacting proper legislation. To accuse press only, without providing right legislation so that the press can function in a right way, is shortsighted policy and it cannot be construed as the will of government to reform the press. Law and rules about Press have much room for improvement. Under present legislation about press, the ownership of newspaper company can be concentrated by a few large enterprises or specific company(or person) whose managers vigorously take part in editing newspapers which is one of the most important function of the press. And that, this malformation of ownership affects sales market of newspapers. For they try to maintain this malformation and their ownership by increasing number of copies of newspapers. Therefore first of all, to reform the press, the ownership should not be concentrated instead it must be diversified so that various opinion can be said. To achieve this aim, legislation must restrict the acquisition of stock by large enterprise and specific company(or person). Improving the structure of ownership will result in protecting the right to editing newspapers and can mitigate excessive competition in sales market of newspapers. This is the very guarantee of free speech system which is derived from freedom of speech as valuable public order in a free democratic society. Secondly, to guarantee this free speech system which comes from another aspect of freedom of speech - that is, the protection of valuable public order - normalization of the sales market of newspapers is need. Owners of press company or large enterprise tries to secure as many readers as possible to maintain the malformation of ownership and this results in excessive competition for sales of newspapers without focusing on suppling right information to the readers. The means of competition are distributing free papers by force and offering premiums. To normalize sales market of newspaper, first of all, there should be Newspaper Notification which regulates habitual unfair trade in sales market of newspapers and restricts abuse of a few managers who try to control sales market of newspapers. Finally, to investigate unfair trade customs, ABC(Audit Bureau of Circulations) system should be introduced. On the assumption that this ABC system is fixed, joint marketing system should be introduced. Normalizing sales market of newspapers means the very protection of free press system. The point of Press reform is to specify press legislation which can improve the structure of ownership and abnormal competition in the sales market of newspaper so that the press can function efficiently in our society.