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Dyadic adjustment can be handled as a state in which there is an overall feeling of happiness and satisfaction with marriage. Women have become so much more active in work life over the past years that the changes in the roles of women also affect the communication with their husbands and as a result their dyadic adjustment. On this basis, the aim of this study is to determine the moderator role of employment status of women in the relationship between critical thinking disposition and dyadic adjustment of married people. The research group was composed of 242 spouses. The data were collected with Demographical Information Form, Critical Thinking Disposition Scale and Dyadic Adjustment Scale. The results showed that there was a correlation between critical thinking disposition and dyadic adjustment. According to the hierarchical regression analysis, there was no moderator role of employment status of women in the relationship between critical thinking disposition and dyadic adjustment.

Soil erosion is one of the most critical environmental problems currently facing Iran, and soil conservation is crucial for managing natural resources. The objective of this study was to investigate the effect of a vetiver cultivation system, known to be a valuable bioengineering technique, and polyacrylamide (PAM) addition on runoff, sediment load (SL) and cumulative water infiltration under field conditions in a loamy soil. The experimental treatments were vetiver cultivation, PAM (applied at 20 and 40kgha–1) and a mixture of vetiver and different PAM application rates. Three simulated rainfall intensities of 15, 30 and 45mmh–1 were applied on the treated soils. Runoff and SL were collected at different time steps. The results showed that vetiver significantly decreased runoff and SL and increased cumulative water infiltration at different rainfall intensities, whereas the effect of PAM on runoff, SL and cumulative water infiltration depended on the PAM level. At the 15mmh–1 rainfall intensity, PAM application increased the runoff, but decreased SL and cumulative water infiltration. At the 30mmh–1 rainfall intensity, the 20kgha–1 PAM level decreased the runoff and SL. At the 45mmh–1 rainfall intensity, the higher PAM level was more effective to enhance the cumulative water infiltration and to reduce the runoff and SL. In general, although simultaneous application of vetiver and PAM significantly decreased the runoff volume and SL and increased water infiltration compared with the control, vetiver considerably decreased the runoff and SL. This suggests that vetiver may sufficiently decrease soil erosion and PAM is therefore unnecessary in controlling runoff and soil erosion where vetiver is applied.

In this paper we present a simple while comprehensive analytical design procedure for distributed amplifiers. Distributed amplifiers are attractive for designers due to their wideband capability. When designing a distributed amplifier, the first question that comes to mind is how wide the bandwidth can be. This paper answers this question by using the self-matching and low-pass properties of a distributed amplifier. Self-matching property of a distributed power amplifier is an interesting point that distinguishes it from other types of power amplifiers that are usually based on input and output matching networks. Here the estimation of the bandwidth of a distributed amplifier structure is discussed. The equations that are used in this paper can bring good insight and they can assist designers. Furthermore, we have explained the frequency behavior of a tapered distributed amplifier analytically for the first time. In order to validate the approach presented here, we have used published designs including our previously published design as practical examples. The flowchart of the design procedure is also provided.