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  1. 26401
  2. 26402

    Global Attractivity of a Higher-Order Difference Equation by R. Abo-Zeid

    Published 2012-01-01
    “…The aim of this work is to investigate the global stability, periodic nature, oscillation, and the boundedness of all admissible solutions of the difference equation xn+1=Axn-2r-1/(B-C∏i=lkxn-2i), n=0,1,2,… where A,B,C are positive real numbers and l,r,k are nonnegative integers, such that l≤k.…”
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  3. 26403

    Effectiveness after Designation of a Trauma Center: Experience with Operating a Trauma Team at a Private Hospital by Kyoung Hwan Kim, Sung Ho Han, Soon-Ho Chon, Joongsuck Kim, Oh Sang Kwon, Min Koo Lee, Hohyoung Lee

    Published 2019-03-01
    “…Results No significant differences were found in the annual patients’ average age (54.1±20.0 vs. 52.8±18.2, p=0.201), transportation pathways (p=0.462), injury mechanism (p=0.486), injury severity score (22.93 vs. 23.96, p=0.877), emergency room (ER) stay in minutes (199.17 vs. 194.29, p=0.935), time to operation or procedure in minutes (154.07 vs. 142.1, p=0.767), time interval to intensive care unit (ICU) in minutes (219.54 vs. 237.13, p=0.662). …”
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  4. 26404

    Global Character of a Six-Dimensional Nonlinear System of Difference Equations by Mehmet Gümüş, Yüksel Soykan

    Published 2016-01-01
    “…The aim of this paper is to study the dynamical behavior of positive solutions for a system of rational difference equations of the following form: un+1=αun-1/β+γvn-2p, vn+1=α1vn-1/β1+γ1un-2p, n=0,1,…, where the parameters α,β,γ,α1,β1,γ1,p and the initial values u-i,v-i for i=0,1,2 are positive real numbers.…”
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  5. 26405
  6. 26406
  7. 26407
  8. 26408

    Effect of Cortical Bone Thickness on Detection of Intraosseous Lesions by Ultrasonography by Sadaf Adibi, Alireza Shakibafard, Zohreh Karimi Sarvestani, Najmeh Saadat, Leila Khojastepour

    Published 2015-01-01
    “…The lesions were made in order to increase the overlying bone thickness, from 0.1 mm in the first sample to 2 mm in the last one (with 0.1 mm interval). …”
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  9. 26409

    Emerging Risk to Dengue in Asian Metropolitan Areas Under Global Warming by Cheng Jing, Guojie Wang, Kristie L. Ebi, Buda Su, Xiaoming Wang, Dong Chen, Tong Jiang, Zbigniew W. Kundzewicz

    Published 2024-07-01
    “…With global warming, the southern part of the Arabian Peninsula, the coast of the Arabian Sea in southern Iran, southern Pakistan in West Asia, the Korean Peninsula, most of the Japanese islands, and parts of North China in East Asia are projected to become suitable for dengue transmission. The numbers of metropolitan areas exposed to dengue is projected to change from 142 (48%) in the reference period (1995–2014) to 211 (71%) at 5.0°C warming. …”
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  10. 26410
  11. 26411

    On Complex Differential-Difference Equations of Malmquist Type by Jianjun Zhang

    Published 2022-01-01
    “…In this paper, we shall give some properties of complex differential-difference equation of the form ∑μ=1nαμz∏i=1tfz+ciai0μf′z+ciai1μ⋯fkiz+ciaikiμ/∑ν=1mβνz∏i=1tfz+cibi0νf′z+cibi1ν⋯fkiz+cibikiν=Rz,fz, where aijμ μ=1,2,…,n and bijνν=1,2,…,mi=1,2,…,t;j=0,1,…,ki are non-negative integers, cii=1,2,…,t are distinct, nonzero complex numbers, αμzμ=1,2,…,n and βνzν=1,2,…,m are small functions relative to fz, and Rz,fz is a rational function in fz with coefficients, which are small functions of fz. …”
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  12. 26412

    Realization of 10bit, 200MHz sampling frequency CMOS video D/A converter with gradient error compensation by HUANG Jiao-ying1, HE Yi-gang1 YANG Hui1, TANG Sheng-xue1, SHEN Fang1

    Published 2007-01-01
    “…A circuit of 10bit,200MHz sampling frequency current steering DAC with hierarchical symmetrical switching sequences was presented,which compensate the gradient error.The DAC employs segmented architecture.An integral linearity error caused by error distributes of current sources was reduced by a new switching sequence called "hierarchi-cal symmetrical switching".The DAC was built in a video-rate adaptive equalizer IC,which was fabricated in a 0.35μm,3.3V CMOS process.The area of DAC is 1.26mm×0.78mm.When operating at 14.318 MHz(4Fsc) sampling freguency,the effective numbers of bits is 9.3.Both the integral and the differential linearity errors are less than ± 0.5LSB.…”
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  13. 26413
  14. 26414
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  16. 26416

    On Some Properties of the Hofstadter–Mertens Function by Pavel Trojovský

    Published 2020-01-01
    “…In particular, as we shall see, this function encodes many interesting properties which relate prime numbers to “meta-sequences”.…”
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  17. 26417

    The Solution and Dynamic Behaviour of Difference Equations of Twenty-First Order by Ibrahim Tarek Fawzi Abdelhamid, Dağıstan Şimşek, Burak Oğul

    Published 2023-07-01
    “…We explore the dynamics of adhering to rational difference formula$$ \psi_{m+1}=\frac{\psi_{m-20}}{\pm 1 \pm \psi_{m-2}\psi_{m-5}\psi_{m-8}\psi_{m-11}\psi_{m-14}\psi_{m-17}\psi_{m-20}}, \quad m \in \mathbb{N}_{0} $$where the initials are arbitrary nonzero real numbers. …”
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  18. 26418

    Quality of computed tomography image versus dose in hybrid studies: preliminary results in phantom by Adlin López Díaz, Armando del Pozo Almaguer, Adalberto Machado Tejeda, Karla Batista Ramó, Carlos F Calderón Marín, Leonel Torres Aroche

    Published 2022-03-01
    “…Significant differences were found between the clinical protocols with different qualities and the standard clinical protocol, for the anthropomorphic phantom, in the standard deviation of the Hounsfield numbers and in the contrast-to-noise ratio (p <0.05).…”
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  19. 26419
  20. 26420

    Sharp Bounds for Power Mean in Terms of Generalized Heronian Mean by Hongya Gao, Jianling Guo, Wanguo Yu

    Published 2011-01-01
    “…For 1<r<+∞, we find the least value α and the greatest value β such that the inequality Hα(a,b)<Ar(a,b)<Hβ(a,b) holds for all a,b>0 with a≠b. Here, Hω(a,b) and Ar(a,b) are the generalized Heronian and the power means of two positive numbers a and b, respectively.…”
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