Background Due to the need for informatics competencies in the field of nursing, the present study was conducted to design a psychometric instrument to determine the qualification of informatics competencies of employed nurses in educational care centers. Methods The questionnaire was made by reviewing existing scientific resources and assessment tools. Two hundred nurses were selected using simple random sampling. Structural equation modeling was used using the measurement model technique and the average variance was calculated. Linear structural relations (LISREL) software was used to test the assumptions and correlations of the model. Results Findings showed relatively good estimation in the fit of first-order measurement model. The informatics knowledge subscale with a determining rate of 0.90 had the greatest explanatory effect among the subscales and informatics skill with a determining rate of 0.67 and basic computer skill with a determining rate of 0.60 were observed. The second-order measurement model of fitness indicators showed that the three factors can well explain the multidimensional construct of informatics competency. Conclusions The designed tool can be used to develop educational strategies in relation to nursing students in the field of informatics and prepare them in the rich environment of information technology, which can be helpful in training nursing instructors.

Routine use of EmbryoGlue(®)as a HA enriched ET medium for cleavage stage embryos does not have advantage to the conventional one for infertile patients undergoing ART.

Covering approximation spaces are a generalization of equivalence-based rough set theories. In this paper, we will consider twelve types of covering based approximation operators by combining four types of covering lower approximation operators and three types of covering upper approximation operators. Then, we will study the properties of these new pairs and show they have most of the common properties among existing covering approximation pairs. Finally, the relation between these new pairs is studied.

Weirs are important hydraulic structures that have been used extensively to measure and control water flow in irrigation and drainage networks, reservoirs, sewage disposal systems, flood control, and river. These structures, such as valves, are vital components in water management in irrigation canals [1][2][3]. Weirs are different types, and they are provided with particular forms for various applications. Weir of multiple classes is offered specific conditions for numerous applications. The essential spillways are Ogee spillway, Chute spillway, Side Channel spillway,

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