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A characterization of constant curvature ratios in Ln
E. Iyigun 장전수학회 2012 Proceedings of the Jangjeon mathematical society Vol.15 No.3
In this paper, we study the curves in n-dimensional Lorentzian space Ln for which all the ratios "1k2k1; "2k3k2; "3k4k3; ::: are constant. We call them curves with constant curvature ratios or ccr-curves. Spherical images of a time-like curve lying on the pseudohyperbolic space Hn 10 (r) in n-dimensional Lorentzian space and some characterizations of spherical images to be general helices if the base curve is a ccr-curves are presented. In the nal part, for n = 4 and 5 dimensional Lorentzian space, we nd constant curvature ratios of some special curves.
Tastan, Sevinc,Andsoy, Isil Isik,Iyigun, Emine Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.9
The aim of the study was to evaluate of the knowledge, behavior and health beliefs of individuals over 50 regarding colorectal cancer screening, with a descriptive and cross-sectional design at Karabuk Life and Health Center in Turkey. A total of 160 people meeting set criteria were included in the study. The questionnaire consisted of two parts. The first part was composed of questions on characteristics of participants and the second part of questions derived from the Champion's Health Belief Model Scale. Only 15.0% of participants (n=24) had undergone a fecal occult blood test (FOBT), 11.3% (n=18) had had colonoscopy and 4.4% (n=7) had had sigmoidoscopy. Some 90.6% of the participants had low levels of risk awareness about the colorectal cancer. It was found that the average point of severity subscale of participants over 65 is higher than that of participants under 65 (p<0.05). In conclusion, because of the many barriers and health beliefs for the colorectal cancer screening program, the rate of participation in screening programs is not sufficient. Healthcare providers have important responsibilities for increasing rate of attendance in colorectal cancer screening programs.