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Calibrating the Settings for CF-Based Recommender Systems
Il Im,Byung Ho Kim 한국지능정보시스템학회 2012 한국지능정보시스템학회 학술대회논문집 Vol.2012 No.5
In this paper, we propose a new method for collaborative filtering (CF)-based recommender systems. Traditional CF-based recommendation algorithms have applied constant settings such as a reference group (neighborhood) size and a significance level to all users. In this paper we develop a new method that identifies optimal personalized settings for each user and applies them to generating recommendations for individual users. Personalized parameters are identified through iterative simulations with 'training' and 'verification' datasets. The method is compared with traditional 'constant settings' methods using Netflix data. The results show that the new method outperforms traditional, ordinary CF. Implications and future research directions are also discussed.
Gynaecological Cancer Mortality in Serbia, 1991-2010: A Joinpoint Regression Analysis
Ilic, Milena,Ilic, Irena Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.1
The descriptive epidemiological study aimed to analyse the mortality trends from gynaecological cancer in Serbia. Average annual percentage of change (AAPC) and the corresponding 95% confidence intervals (CIs) were computed for trend using joinpoint regression analysis. Nearly 25,000 gynaecological cancer deaths occurred in Serbia during the 1991-2010 period, with the average annual age-standardised mortality rate being 17.2 per 100,000 women. Increase of mortality was observed for cancer of the vulva and vagina (AAPC=+1.3%, 95% CI=0.1 to 2.6), ovarian cancer (AAPC=+0.8%, 95% CI=0.4-1.3) and for cervical cancer (AAPC=+0.7%, 95% CI=0.3 to 1.1). Mortality rates for gynaecological cancer overall declined in women aged 30-39 years, but mortality was increased in middle-aged women (for cervical cancer) and in the elderly (for ovarian cancer). Improvements to and implementation of the national cervical cancer screening programme conducted in 2013 and expected to be finalised in the following years throughout Serbia should contribute to improvement.
INVOLUTE CURVES OF ORDER k OF A GIVEN CURVE IN GALILEAN 4-SPACE G<sub>4</sub>
( Ilim Kisi ),( Gunay Ozturk ) 호남수학회 2018 호남수학학술지 Vol.40 No.2
In the present study, we consider the curves in Galilean 4-space G<sub>4</sub>. We find out the involute curves of order k (k = 1; 2; 3) of a given curve. We get the relationships between the Frenet ap-paratus of a given curve and its involute curves of order k.
Ilim Kisi,Gunay Ozturk 대한수학회 2018 대한수학회지 Vol.55 No.4
In this paper, we handle the Gauss map of a tubular surface which is constructed according to the parallel transport frame of its spine curve. We show that there is no tubular surface having harmonic Gauss map. Moreover, we give a complete classification of this kind of tubular surface having pointwise 1-type Gauss map in Euclidean $4$-space $\mathbb{E}^{4}$.
Kripke models for classical logic
Ilik, Danko,Lee, Gyesik,Herbelin, Hugo Elsevier 2010 Annals of pure and applied logic Vol.161 No.11
<P><B>Abstract</B></P><P>We introduce a notion of the Kripke model for classical logic for which we constructively prove the soundness and cut-free completeness. We discuss the novelty of the notion and its potential applications.</P>
Ilias Marmouzi,El Mostafa Karym,Rachid Alami,Meryem El Jemli,Mourad Kharbach,Fouzia Mamouch,Aisha Attar,Bouchra Faridi,Yahia Cherrah,My El Abbes Faouzi 경희대학교 융합한의과학연구소 2019 Oriental Pharmacy and Experimental Medicine Vol.19 No.2
Therapy combination is known for less side effects and higher efficacy. Essential oils (EOs) and mixture from two wellknown plants (Syzygium aromaticum and Pelargonium graveolens) were tested for in vivo antioxidant and anti-inflammatory activities. The chemical analysis of the investigated Oils has lead to the identification of Eugenol (74.06%), Caryophyllene (11.52%) and Carvacrol acetate (7.82%) as the major element in S. aromaticum; while P. graveolens was much higher in Citronellol (30.77%), 10-epi-γ-Eudesmol (22.59%), and Geraniol (13.95%). In our pharmacological screening, both EOs demonstrated good antioxidant effects; especially S. aromaticum activity was much higher. In contrast, the in vivo investigation of the antioxidant activity using antioxidant enzymes (MDA, SOD and CAT) in the protozoa model (Tetrahemena pyriformis) demonstrated a higher protective effect of P. graveolens and EOs mixture. On the other hand, EOs demonstrated anti-inflammatory effect on the two phases of inflammation in the carrageenan induced edema model. Results from this study indicate that EOs from S. aromaticum and P. Graveolens can be used as a multitarget therapy.
Mortality from Stomach Cancer in Serbia, Excluding the Province of Kosovo, in the 1991-2009 Period
Ilic, Milena,Prodovic, Tanja,Milosavljevic, Zoran,Ljujic, Biljana Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.3
Background/Aim: Stomach cancer is the second most common cause of death from all malignant tumors in the world (third in men, fifth in women), with a strong decreasing trend in most developed countries. The aim of this descriptive epidemiological study was to analyze mortality of stomach cancer in Serbia, excluding the Province of Kosovo, in the 1991-2009 period. Materials and Methods: In data analysis, we used mortality rates which were standardized directly using those of the world population as a standard. In order to analyze the mortality trend from stomach cancer, linear trend and regression analysis were used. Confidence intervals (CIs) for the average age-adjusted and age-specific mortality rates were assessed with 95% level of probability. Mortality data were derived from the data file of the Statistical Office of the Republic of Serbia. Results: During the 1991-2009 period, a significant downward trend in mortality of stomach cancer was recorded in Serbia (y=9.78 - 0.13x, p=0.000; average annual percent change was -6.3 (95%CI, -7.8 to - 4.8). During the same period, a significant decrease in mortality trend was found both in male (y=14.13 - 0.20x; p=0.000; % change was -7.7 (95%CI, -10.9 to -4.5) and female populations (y=6.27 - 0.08x; p=0.000; % change was - 4.4 (95%CI, -5.3 to -3.6). Conclusion: Decreasing trends in mortality from stomach cancer in Serbia are similar to those in most developed countries.