We introduce object systems as a common generalization of graphs, hypergraphs, digraphs and relational structures. Let C be a concrete category, a simple object system over C is an ordered pair S = (V, E), ∗Research supported in part by Slovak VEGA Grant 2/4134/24. 282 J. Bucko and P. Mihók where E = {A1, A2, . . . , Am} is a finite set of the objects of C, such that the ground-set V (Ai) of ea...

In the definition of a crossed module $(T,G,rho)$, the actions of the group $T$ and $G$ on themselves are given by conjugation. In this paper, we consider these actions to be arbitrary and thus generalize the concept of ordinary crossed module. Therefore, we get the category ${bf GCM}$, of all generalized crossed modules and generalized crossed module morphisms between them, and investigate som...

in this paper, new definitions of $l$-fuzzy closure operator, $l$-fuzzy interior operator, $l$-fuzzy remote neighborhood system, $l$-fuzzy neighborhood system and $l$-fuzzy quasi-coincident neighborhood system are proposed. it is proved that the category of $l$-fuzzy closure spaces, the category of $l$-fuzzy interior spaces, the category of $l$-fuzzy remote neighborhood spaces, the category of ...

Background. Functional gastrointestinal disorders (FGIDs) are common in the general population worldwide. However, there is paucity of large sale surveys for prevalence of FGID in the military personnel. Methods. It is a cross-sectional study, using Rome III criteria for the diagnosis of FGID among the Chinese Air Force (CAF) workers. Results. Of 4633 registered male subjects, there were 818 (1...

The singularity category of a ring makes only the modules finite projective dimension vanish among modules, so that is expected to characterize homological property infinite dimension. In this paper, such we deal with eventually periodic over left artin ring, and, as our main result, them in terms morphisms category. As applications, first prove that, for class dimensional algebras field, being...

Previous research has demonstrated that recall performance is facilitated by the order of presentation of salient stimuli, referred to as the category-order effect (Brooks & Watkins, 1990; Greene & Lasek, 1994). Specifically, recall is higher on the full list when numbers precede words. To extend and clarify this research, Experiment 1 modified Brooks and Watkins’ paradigm by presenting items a...

This paper introduces an originally designed tracked robot. This robot belongs to the variable geometry single-tracked vehicle (VGSTV) category. Two active joints are used to control the shape of the vehicle and the tension of the tracks. Thus, it becomes possible to adapt the shape of the robot and the ground/robot contact points to the obstacle by controlling the joints. This paper presents s...

GPR (Ground Penetrating Radar) is one of subsurface sensing technologies, which has been used intensively since 1980s. Due to rapid development of both hardware and software, its possibilities have been considerably extended resulting in widening the area of its applications. While such applications as to detection of buried pipes and cables, archaeology and geology are established category, ne...

7 This paper deals with a particular question—When do powersets in lattice-valued mathematics form algebraic theories (ormonads) in clone form?Our approach in this and related papers is to consider “powersets over objects” in the ground categories Set and Set×C 9 from the standpoint of algebraic theories in clone form (C is a particular subcategory of the dual of the category of semi-quantales)...

Ground Penetrating Radar (GPR) systems fall into the category of ultra-wideband (UWB) devices. Most GPR equipment covers a frequency range between an octave and a decade by using short-time pulses. Each signal recorded by a GPR gathers a temporal log of attenuated and distorted versions of these pulses (due to the effect of the propagation medium) plus possible electromagnetic interferences and...