background and aim: motor vehicle accidents are common cause of mortality, morbidity and disability. human factors are principle cause for frequency of motor vehicle accident. in most studies, 52-40% lower limb injuries are trauma from a motorcycle accident. these accidents cause high financial cost and harm for society. materials and methods: in this study, patients with lower limb injuries re...

we state several conditions under which comultiplication and weak comultiplication modulesare cyclic and study strong comultiplication modules and comultiplication rings. in particular,we will show that every faithful weak comultiplication module having a maximal submoduleover a reduced ring with a finite indecomposable decomposition is cyclic. also we show that if m is an strong comultiplicati...

macrodystrophia lipomatosa is a rare congenital form of localized gigantism characterized by an increase in all mesenchymal elements, particularly fibroadipose tissue. mr imaging can be used to examine the soft tissue and detect the fibrous and fatty hypertrophy that characterizes this condition and also diagnose an associated fibrolipomatous hamartoma of the median or plantar nerve. we describ...

Let R be a real closed field. An integer part I for R is a discretely ordered subring such that for every r ∈ R, there exists an i ∈ I so that i ≤ r < i+ 1. Mourgues and Ressayre [11] showed that every real closed field has an integer part. In [6], it is shown that for a countable real closed field R, the integer part obtained by the procedure of Mourgues and Ressayre is ∆ωω (R). We would like ...

In this paper, we study the div-curl-grad operators and some elliptic problems in the whole space R and in the half-space R+, with n ≥ 2. We consider data in weighted Sobolev spaces and in L.

This paper presents an integrated modeling framework where the learning and knowledge retrieval mechanisms of the ACT-R cognitive architecture are combined with a semantic resource. We aim to extend ACT-R with a scalable knowledge model, in order to support sub-symbolic processes with consistent, general high-level declarative representations. Design principles, methodology and implementation e...

In this paper, generalized R ′ -implications are introduced and studied. Although they not always fuzzy implications, the sufficient necessary condition such that a id="M2"> -operation is implication discovered proved. The satisfaction or violation of some basic...

The 2d Boussinesq equations model large scale atmospheric and oceanic flows. Whether its solutions develop a singularity in finite-time remains a classical open problem in mathematical fluid dynamics. In this work, blowup from smooth nontrivial initial velocities in stagnation-point form solutions of this system is established. On an infinite strip = {(x, y) ∈ [0, 1] × R+}, we consider velociti...