The piezoelectric dij coefficient is often regarded in materials science as the most important figure of merit performance. For many applications, gij which correlates to voltage output and sensitivity a material can be considered equal or increased importance, however an overlooked parameter literature. aim this review highlight importance provide insight into mechanisms that drive high single...

and Applied Analysis 3 system takes the following form: dxi ⎡ ⎣xi ( ri − bixi − eiyi ) n ∑ j 1 dij ( xj − αijxi ) ⎤ ⎦dt σ1ixidB1i t , dyi yi −γi − δiyi εixi ) dt σ2iyidB2i t , i 1, 2, . . . , n. 1.3 Throughout this paper, we assume dij are nonnegative constants, dij is irreducible, and the parameters ri, γi, bi, ei, δi, εi are positive constants. In order to obtain better dynamic properties of ...

being observed frequently that projects cannot achieve to their plan duration and their budget. utilizing retrospective method is one of the reasons for this problem. in this research two method, earned duration management and risk management, has been used to remove the gap of the plan and the reality; this enable the project to utilize both high accuracy of the first method and prophecy of th...

background and objective: bruising is the most common complications that resulting from subcutaneous heparin injection. it causes the limitation of injection area, anxiety, disruption of body image, refusing treatment in patients and the reduction in patients trust in nurse. although different methods were suggested to lessen these unwanted complications, unfortunately none of them could decrea...

background & aim : primary dysmenorrhea (pd) is the most common genital disease among adults which can disrupt daily activities and reduce quality of life. acupressure was recommended for relief of pd and the aim of this study was to compare the maximum pain intensity (mpi) and duration of pd after acupressure on third liver (liv3) and placebo points. methods & materials : students who were suf...

background: there are few articles studding the factors associated with successful smoking cessation in iranian smokers. the aim of this study is to clarify the association between socio‑demographic factors and smoking behavior, such as number of failed smoking cessation and duration of abstinence in iranian population. methods: a self‑administered questionnaire survey of 673 participants was c...