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Tian Ding,Yong-Guo Jin,S. M. E. Rahman,Jai-Moung Kim,Kang-Hyun Choi,Gye-Sun Choi,오덕환 한국식품위생안전성학회 2009 한국식품위생안전성학회지 Vol.24 No.3
This study was conducted to develop a model for describing the effect of storage temperature (4, 10, 15, 20, 25, 30 and 35oC) on the growth of Escherichia coli O157 : H7 in ready-to-eat (RTE) lettuce treated with or without (control) alkaline electrolyzed water (AIEW). The growth curves were well fitted with the Gompertz equation, which was used to determine the specific growth rate (SGR) and lag time (LT) of E. coli O157 : H7 (R2 = 0.994). Results showed that the obtained SGR and LT were dependent on the storage temperature. The growth rate increased with increasing temperature from 4 to 35oC. The square root models were used to evaluate the effect of storage temperature on the growth of E. coli O157 : H7 in lettuce samples treated without or with AIEW. The coefficient of determination (R2), adjusted determination coefficient (R2 Adj), and mean square error (MSE) were employed to validate the established models. It showed that R2 and R2 Adj were close to 1 (> 0.93), and MSE calculated from models of untreated and treated lettuce were 0.031 and 0.025, respectively. The results demonstrated that the overall predictions of the growth of E. coli O157 : H7 agreed with the observed data. This study was conducted to develop a model for describing the effect of storage temperature (4, 10, 15, 20, 25, 30 and 35oC) on the growth of Escherichia coli O157 : H7 in ready-to-eat (RTE) lettuce treated with or without (control) alkaline electrolyzed water (AIEW). The growth curves were well fitted with the Gompertz equation, which was used to determine the specific growth rate (SGR) and lag time (LT) of E. coli O157 : H7 (R2 = 0.994). Results showed that the obtained SGR and LT were dependent on the storage temperature. The growth rate increased with increasing temperature from 4 to 35oC. The square root models were used to evaluate the effect of storage temperature on the growth of E. coli O157 : H7 in lettuce samples treated without or with AIEW. The coefficient of determination (R2), adjusted determination coefficient (R2 Adj), and mean square error (MSE) were employed to validate the established models. It showed that R2 and R2 Adj were close to 1 (> 0.93), and MSE calculated from models of untreated and treated lettuce were 0.031 and 0.025, respectively. The results demonstrated that the overall predictions of the growth of E. coli O157 : H7 agreed with the observed data.
Nguyen, Hoang Long,Jung, Jai E. Springer-Verlag 2017 MULTIMEDIA TOOLS AND APPLICATIONS Vol.76 No.6
<P>This paper presents a system that analyzes the sentiment of figurative language contained in short texts collected from Social Networking Services (SNS). This case study sources information from tweets on Twitter and calculates the polarity of the figurative language with three different categories (i.e., sarcastic, ironic, and metaphorical tweets). As in Medhat et al. (Ain Shams Eng J 5(4):1093-1113, 2014), Nguyen and Jung (Mob Netw Appl 20(4):475-486, 2015), many related works have used a lexical-based approach (e.g., dictionary and corpus), and machine learning-based approach (e.g., decision tree, rule discovery, and probabilistic methods) to extract sentiment in a given text. This statistical approach makes use of two main features: i) Content-based, and ii) Emotion Pattern-based. We believe that this combination offers a general method to solve the current problem and easily extends for analyzing other types of figurative languages. The proposed algorithm is evaluated by using Cosine similarity to conduct an experiment over a Data set that contains about 5,000 tweets. The results show that the FIS Model (Figurative language Identification using Statistical-based Model) works well with figurative tweets with a highest achievement of 0.7813.</P>
一部大學生의 口腔保健(D.M.F.)에 關한 硏究 : 特히 서울大學校 新入生을 中心으로
權彛赫,車喆煥,朴淳永,黃晶煥,尹麟在,李昌熙 최신의학사 1970 最新醫學 Vol.13 No.12
For the purpose of ascertaining the prevalence of dental caries and the D. M. F. rate of University Students, an intensive examination was conducted on a total of 3, 030(Male 2.577, Female 453) Students, ranging in age from 16 to 25. The subjects were all students who had passed the written entrance examination for Seoul National University. The examination was performed macroscopically using a mouth mirror, an explorer, and dental floss silk. The following results were obtained; 1. Tartar on tooth; light, 14.3%; moderate, 56.3%; heavy, 17.6% and none, 11.8`-" Tartar on tooth by Sex: In males, light, 14.3%; moderate, 56.7%; heavy, 18. 1% and none, 10. 9%. In females, light, 14.3%; moderate, 54.3%; heavy, 14.6% and none, 16.8%. 2. Out of total, 11. 6%(made 12. 1%, female 8.4%) had gingivitis, the male prevalen(t r;tie of gingivitis was higher than female and such rates rose with advancing ages. 3. Average number of teeth in each subjectjwas 28. 7 teeth and female had 28. 6 teet. 4. The caries index was 94.7%(male 94.3%, female 97.3%), the female caries rate was higher than male. 5. The average number of I) Caries per tooth rate was 8.4%(male 8. 0%, female 10.5%), II) Missing per tooth rate was 0.4%(male 0.4%, female 0.7%), III) Fillings per tooth rate was 3. 6%(male 3.4%, female 5. 1%), in all cases, the female incidences were higher than the male. 6. The sbreak down of decay, missing and fillings in the total D. M. F. teeth is as follows: male: D=68.3%, M=3-1%, F=28.6%, female: D=64.3%, M=4.3%, F=31.4%, Total average: D=67.5%, M=3.3%, F=29.2%. 7. The average number of D. M. F. was 3.6 teeth(male 3. 4 teeth, female 4. 7 teeth), female was higher than male. 8. The average rate of D. M. F. was 12. 5%(male 11. 8%, female 16.4%), female was higher than male. 9. The treatment Status of Dental; the average number of I) Sumplatinum bridge per tooth rate was 2. 0% in male and 5.5% in female, II) Amalgam per tooth rate was 21.9% in male and 48. 1% in female, III) Gold bridge per tooth rate was 4.4% in both of sex. iv) Gold inlay per tooth rate was 17.7% in male and 32.4% in female, in all cases, the female fillings were higher than the male.
Nguyen, Duc T.,Jung, Jai E. Hindawi Publishing Corporation 2014 The Scientific World Journal Vol.2014 No.-
<P>Social network services (e.g., Twitter and Facebook) can be regarded as social sensors which can capture a number of events in the society. Particularly, in terms of time and space, various smart devices have improved the accessibility to the social network services. In this paper, we present a social software platform to detect a number of meaningful events from information diffusion patterns on such social network services. The most important feature is to process the social sensor signal for understanding social events and to support users to share relevant information along the social links. The platform has been applied to fetch and cluster tweets from Twitter into relevant categories to reveal hot topics.</P>
Kim, Han Sung,Yeom, Yeon Soo,Nguyen, Thang Tat,Choi, Chansoo,Han, Min Cheol,Lee, Jai Ki,Kim, Chan Hyeong,Zankl, Maria,Petoussi-Henss, Nina,Bolch, Wesley E,Lee, Choonsik,Qiu, Rui,Eckerman, Keith,Chung, Institute of Physics in association with the Ameri 2017 Physics in medicine & biology Vol. No.
<P>It is not feasible to define very small or complex organs and tissues in the current voxel-type adult reference computational phantoms of the International Commission on Radiological Protection (ICRP), which limit dose coefficients for weakly penetrating radiations. To address the problem, the ICRP is converting the voxel-type reference phantoms into mesh-type phantoms. In the present study, as a part of the conversion project, the micrometer-thick target and source regions in the alimentary and respiratory tract systems as described in ICRP <I>Publications 100</I> and <I>66</I> were included in the mesh-type ICRP reference adult male and female phantoms. In addition, realistic lung airway models were simulated to represent the bronchial (BB) and bronchiolar (bb) regions. The electron specific absorbed fraction (SAF) values for the alimentary and respiratory tract systems were then calculated and compared with the values calculated with the stylized models of ICRP <I>Publications 100</I> and <I>66</I>. The comparisons show generally good agreement for the oral cavity, oesophagus, and BB, whereas for the stomach, small intestine, large intestine, extrathoracic region, and bb, there are some differences (e.g. up to ~9 times in the large intestine). The difference is mainly due to anatomical difference in these organs between the realistic mesh-type phantoms and the simplified stylized models. The new alimentary and respiratory tract models in the mesh-type ICRP reference phantoms preserve the topology and dimensions of the voxel-type ICRP phantoms and provide more reliable SAF values than the simplified models adopted in previous ICRP <I>Publications</I>.</P>
Prakash, Jai,Kumar, Vinod,Kroon, R. E.,Asokan, K.,Rigato, V.,Chae, K. H.,Gautam, S.,Swart, H. C. The Royal Society of Chemistry 2016 Physical chemistry chemical physics Vol.18 No.4
<P>Au nanoparticles (NPs) on the surface and embedded in a matrix have been the subject of studies dealing with a variety of spectroscopic and sensing applications. Here, we report on low energy Ar ion induced evolution of the morphology of a thin Au film on a polyethylene terephthalate (PET) substrate along with thermodynamic interpretations, and corresponding unique surface plasmon resonance (SPR) and photoluminescence (PL) properties. These properties are linked to the variation of surface nanostructures and the surface enhanced Raman scattering (SERS) effect of methyl orange (MO) dye molecules adsorbed on the surface. Ion induced thermal spike and sputtering resulted in dewetting of the film with subsequent formation of spherical NPs. This was followed by embedding of the NPs in the modified PET due to the thermodynamic driving forces involved. The surface and interface morphologies were studied using atomic force microscopy and cross-sectional transmission electron microscopy. X-ray photoelectron spectroscopy was used to study the chemical changes in the system upon irradiation. The optical properties were studied by diffuse reflectance UV-Vis spectroscopy and PL using a 325 nm He-Cd laser. The red shift of the SPR absorption and the blue shift of the PL emission have been correlated with the surface morphology. The blue PL emission bands at around 3.0 eV are in good agreement with the literature with respect to the morphological changes and the blue shift is attributed to compressive strain on the embedded Au NPs. Enhancement of the SERS signals is observed and found to be correlated with the SPR response of the Au nanostructures. The SERS analyses indicate that MO molecules may be adsorbed with different orientations on these surfaces i.e. Au NPs located on the surface or embedded in the modified PET. These polymeric substrates modified by NPs can have a potential application in solid-state light emitting devices and can be applied in SERS based sensors for the detection of organic compounds.</P>