Recent focus on wastewater treatment includes energy-saving and renewable energy generation for energy-independence of water infrastructures. Aeration and pumping in biological wastewater removal processes account for nearly 30-60% of the total electricity cost in real wastewater treatment plants. In this study, the performance and microbial characteristics were investigated in sequencing batch reactor under typical oxygen and oxygen limited condition. Under typical DO (7.55±0.99 mg/L) and low DO (0.23±0.08 mg/L) conditions, COD removal was stable over 91 % during SBR operation. Ammonia removal efficiency was reduced from 95.6 % to 89.2 % when DO concentration was dropped sharply. Phosphorus removal efficiency also reached 77% at oxygen-limited condition. The results indicated that removal efficiency both ammonia and phosphorus was influenced by DO condition. Microbial analysis revealed that Proteobacteria and Bacteroidetes at phylum level was dominant in typical DO and low DO conditions and DO concentration did not much affect phylum distribution. Population decrease of genera of nitrifying bacteria(Dokdonella) and Dechloromonas spp. affect removal efficiency of nitrogen and phosphorus at low DO condition.

Jung, In-Gyo & Yang, Yong-seok. 2000. A Study on the Productivity of Neologism. Studies in Modern Grammar 19, 109-138. The aim of this study is to analyze the morphological structure of neologisms in the novel of X-generation (1991) written by Douglas Coupland on the basis of the framework of Word Syntax (Lieber, 1992), and to suggest the paradigm of morphological derivatives and spelling module between lexicon and grammatical components. X-bar theory works well in explaining the combinational process of affixes, but the nonhead of a lexical item can be bound near its adjacent category. The results obtained are as follows.: 1) several suffixes which form ]｛_(N,A)｝_]N such as -ism, -ing, -ness, -ification, -tion, and -phobia have high productivity as well as syntactic adequacy. 2) the addition of formatives such as -ozo, -job, -chondria, and Quelle by a sort of blending has lower productivity. 3) the root compounding word, `-slumming` may be formulated as [[[N₁+al]+N₂]+A_(fi)] in the deep structure, and used as a pejorative. 4) spelling variations of -vul-, -o-, -to, -o- are the outcomes realized by some phonological conflations.

Jung, In-Gyo, Kim, Hui-Seop & Kim Eun-Il. 1996. Stress on the English Loan Words Spoken by Speakers of Kyungsang Dialect. Studies in Modern Grammatical 8: 1-24. This study discusses the misaccentuation on the English loan words spoken by the speakers of Kyungsan8 Dialect. Most speakers of Kyungsang dialect tend to pronounce the English loan words in the same kind of pitch contour when they speak Korean or Sino-Korean words rather than by the English stress rules. To find the types of pitch contour of English loan words, 10 native speakers of Kyungsang dialect were asked to pronounce 120 words, which were analyzed by CSL(Model 4300B). This study shows that the types of pitch contour are generally determined bY the CV structure of the syllables and presents a guide to help students pronounce the correctly stressed English loan words.