this research develops a two-level model based on hypotheses, which concern relationships among role ambiguity, role conflict, job involvement and salesperson performance at individual level and collective sale self efficacy, customer orientation and competitive climate at sale unit level in iranian food industry. data was drawn from 482 sales people in 30 companies , using a 51-item self-repor...

A variational optimization of the second-order density matrix under the P-, Q-, and G-conditions was carried out for a set of diatomic 14-electron molecules, including N(2), O(2) (2+), NO(+), CO, and CN(-). The dissociation of these molecules is studied by analyzing several chemical properties (dipole moments, population analysis, and bond indices) up to the dissociation limit (10 and 20 A). Se...

in this research at the first metoprolol drug and its fullerene derivative were optimized. natural bond orbital (nbo), nuclear indepndent chemical shift (nics) and finally ir calculations, for these compounds were carried out at the b3lyp/6-31g* quantum chemistry level. different parameters such as energy levels, the amount of chemical shift in different atoms, the amount of homo/lumo, chemical...

In contrast, when ν → 0, the posterior odds are just equation (5) with ν replaced by 0. This means that gene-specific Ws are so different such that moderation is not able to move these gene-specific W at all. Thus, the degree of moderation reflects how similar these gene-specific within group sums of squares are. The more similar they are, the greater degree of moderation our proposed statistic...

The design of complex social systems, such as online communities, requires the consideration of many parameters, a practice at odds with social science research that focuses on the effects of a small set of variables. In this paper, we examine three design decisions—topical breadth, message volume, and discussion moderation—and the trade-offs involved in making these decision. We show how synth...

This paper offers some qualitative understanding of the chemical potential, a topic that students invariably find difficult. Three ‘‘meanings’’ for the chemical potential are stated and then supported by analytical development. Two substantial applications—depression of the melting point and batteries—illustrate the chemical potential in action. The origin of the term ‘‘chemical potential’’ has...

In this article, we advocate a new approach in theory development by translating and synthesizing insights from multiple social science theories in an agent-based model to understand challenges in building online communities. To demonstrate the utility of this approach, we use it to examine the effects of three types of discussion moderation in conversation-based communities: no moderation, in ...

We investigate the sources of changes in GDP volatility observed from 1966 to 2018. develop a general equilibrium model and calibrate it US data characterize contribution micro level productivity shocks, inter-sectoral linkages households' behavior aggregate volatility. Our results show that sectoral played an important role shaping asymmetries economy had different impact on over time. Moreove...

The general formulation of a linear combination of population means permits a wide range of research questions to be tested within the context of ANOVA. However, it has been stressed in many research areas that the homogeneous variances assumption is frequently violated. To accommodate the heterogeneity of variance structure, the Welch–Satterthwaite procedure is commonly used as an alternative ...

Following the victory of the Islamic Revolution of Iran and establishment of new government within the framework of political Islam in the region, in order to continue and reinforce this government model, the Islamic –Iranian Model of Progress was put in the blueprint with regard to the indigenous standards as the most important pre-occupation. After the third decade of the Revolution which has...