A two-dimensional nonhydrostatic (NH) atmospheric model based on the compressible Euler system has been developed in the (x, z) Cartesian domain. The spatial discretization is based on a nodal discontinuous Galerkin (DG) method with exact integration. The orography is handled by the terrain-following heightbased coordinate system. The time integration uses the horizontally explicit and vertical...

Students bring to college a value system that affects their levels of academic achievement and persistence. The goal of this project was to develop a self-report inventory that measures the value students place on higher education. The Higher Education Value Inventory (HEVI) surveys students’ attitudes and behaviors in five domains: family expectations, scholastic focus, achievement value, gene...

The efficient simulation of non-hydrostatic atmospheric dynamics requires time integration methods capable of overcoming the explicit stability constraints on time step size arising from acoustic waves. In this work we investigate various implicit-explicit (IMEX) additive Runge-Kutta (ARK) methods for evolving acoustic waves implicitly to enable larger time step sizes in a global non-hydrostati...

In this paper we derive a fourth order two step Runge-Kutta method with four stages, for additively partitioned systems of ordinary differential equations. Our main objective is that it will be useful as horizontally explicit and vertically implicit (HEVI) atmospheric models. our the diagonal coefficients in part are all equal, HEVI-stability properties seem to excellent. Further, accuracies ob...

This study examines Finnish college students' views on learning in a virtual university. Respondents studied at Helsinki Virtual Open University (HEVI) and the Apaja Internet Service from 1995-99. HEVI is a. Web-based learning environment where students can study, get advice, receive help from tutors, and use office services. Apaja Internet Service provides Web-based courses for university grad...

This study discusses student’s experiences on Web-based learning in a Helsinki Virtual Open University HEVI [01] environment with the help of a new modeling technique, Bayesian networks. The advantage of Bayesian network models relies both on improved modeling capabilities and in the possibility to use such models to implement new integrative modules that enable interactive activities (e.g. tes...

A new horizontally explicit/vertically implicit (HEVI) time splitting scheme for atmospheric modelling is introduced, which the horizontal divergence terms are applied within vertical substep. The HEVI implemented in conjunction with a mixed mimetic spectral element spatial discretisation and semi-implicit stepping that both preserve skew-symmetric structure of non-canonical Hamiltonian form eq...

This survey study was undertaken to find out the prevalence and distribution of fungi occupying residential surfaces in Azadi Teaching Hospital Hevi Paediatric Duhok province, Iraq. Three hundred samples were collected from randomly selected areas laboratories, wards, consultation rooms, operating theatres hospital kitchen by swabs. These cultured on two selective fungal media (PDA SDA) also ai...