This paper is concerned with a technique for solving Volterra integro-dierential equationsin the reproducing kernel Hilbert space. In contrast with the conventional reproducing kernelmethod, the Gram-Schmidt process is omitted here and satisfactory results are obtained.The analytical solution is represented in the form of series. An iterative method is given toobtain the...

OBJECTIVE To identify racial/ethnic differences in prevalence and the factors that influence decisions to breastfeed among adolescent mothers. METHODS A total of 696 Mexican-American, African-American, and Caucasian adolescent mothers </=18 years of age were interviewed on the postpartum ward of university hospital within 48 hours of delivery. Self-reported factors associated with the decisio...

in this paper, downlink resource allocation for a sparse code multiple access (scma) based heterogeneous  cellular networks (hcn) is investigated. the main aim of this paper is to obtain joint power allocation and codebook assignment to achieve the least total system transmit power. in this regard, the proposed objective function is formulated as total transmit power subject to users minimum ra...

the problem of downward continuation of the gravity field from the earth’s surface to the reference ellipsoid arises from the fact that the solution to the boundary value problem for geoid determination without applying stokes formula is sought in terms of the disturbing potential on the ellipsoid but the disturbing gravity observations are only available on the earth’s surface. downward contin...

BACKGROUND The purpose of this study was to examine the relationship of physical activity levels with sleep duration (SD), and self-rated health (SRH) using the fifth Korean National Health and Nutrition Examination Survey data from 2010 and 2011. METHOD Overall, 12,188 Korean people were evaluated in relation to meeting guidelines for vigorous PA (MVPA), moderate PA (MMPA), and low PA (MLPA)...

in this paper, an iterative method is proposed for solving the matrix inverse problem $ax=b$ for hermitian-generalized hamiltonian matrices with a submatrix constraint. by this iterative method, for any initial matrix $a_0$, a solution $a^*$ can be obtained in finite iteration steps in the absence of roundoff errors, and the solution with least norm can be obtained by choosing a special kind of...

OBJECTIVE To explore risk factors associated with induced abortion among sexually active female entertainment workers (FEWs) in Cambodia. DESIGN Cross-sectional study. SETTING Phnom Penh and Siem Reap, Cambodia. PARTICIPANTS This study included 556 FEWs aged 18-47 years randomly selected from entertainment establishments in the two cities in 2014 using a two-stage cluster sampling method....