In recent decades, the issue of stress and its negative consequences such as violence in the workplace, increased accidents at work, absenteeism and burnout, have deleterious effects on the efficiency and economy. The aim of this study was to determine the occupational stress of pelletizing industry workers and its determinants. This study was descriptive-analytical and cross sectional. Among w...

In testing certain systems, checking for burst errors is important. This is due to the fact that errors are confined to a certain number of bits. If signature analysis is used to test a circuit then the testing capabilities depend on the polynomial that defines the linear feedback shift register (LFSR) used in the test. In this paper we show that the LFSR that is suitable for checking for burst...

LFSR (Linear Feedback Shift Register) is commonly employed in various cryptography applications to generate pseudo-random numbers. The overall number of random state produced by the LFSR is determined by the feedback polynomial. LFSR is a shift register in which some of their outputs are taken in exclusive-OR format that forms the feedback path. So it capable to generate maximum of 2-1 random s...

We investigate shift invariant subspaces of $L^2(G)$, where $G$ is a locally compact abelian group. We show that every shift invariant space can be decomposed as an orthogonal sum of spaces each of which is generated by a single function whose shifts form a Parseval frame. For a second countable locally compact abelian group $G$ we prove a useful Hilbert space isomorphism, introduce range funct...

shift changes and heterogeneity analyses of hydro-climatic variables is very important in water resources planning and management. in order to shift changes and heterogeneity analyses of tmin and tmax, precipitation and discharge, 2, 7 and 7 stations was used over the 40 years (1972-2011), respectively. the results of annual tmin and tmax series showed that both of two stations had the signific...

the united states policy toward iran during 1985-7 is a significant issue. the us had followed a confrontationist policy toward iran after the 1979 revolution but a shift in the policy could be observed in the mid 1980's in the form of us attempts to make a rapprochement possible. this article explains this shift through the examination of the impact of this variable: solving us problems i...