Sharif Digital Repository

In this research, the barrier around C-N bond in the molecule of 2-cyano ethyl morpholine-4-carbo dithioate was calculated by dynamic NMR. The 1H-NMR spectra of sample were recorded between temperatures of 240-332 K and 240-328 K in chloroform and acetone solvents, respectively. By analyzing the spectra by SpinWorks software, thermodynamic parameters (ΔG# , ΔH# , ΔS# ) extracded and compared with the data of quantum calculations . In quantum calculations, we compared data in two level (HF and B3LYP ).Consequently, the data of B3LYP method was better .Experimental ΔG# for internal rotation around C-N bond in 2-cyano ethyl morpholine-4-carbo dithioate was 14.04 kcal mol -1 and compared to... 

In this millennium there has been a thought-provoking dispute over the inclusion of Critical Thinking (CT) programs into teaching syllabi; this inspiring challenge of change has led researcher to investigate the teachability and transferability of Critical Thinking. Thus, this study investigated whether explicit critical thinking instruction can foster critical thinking skills of in-service EFL teachers and enhance their disposition, perception and attitude. To fulfill the purposes of this study, California Critical Thinking Skill Tests (CCTST), EMI Critical Thinking Disposition Inventory, as well as perception and attitude questionnaires were utilized. The participants of this research were... 

Nowadays, both academic and industrial environment have come to the conclusion that recent manufacturing paradigms are probably no longer applicable to the ever-changing today’s business environments. That is why manufacturing is moving gradually from production-oriented to service-oriented approaches. Service-oriented manufacturing results in a variety of services through a product life cycle which create an abundance of high value-added markets promoting efficient collaboration and amazing innovation. Cloud Manufacturing as an intelligent newly developed service-oriented manufacturing paradigm provides platforms of shared and interconnected distributed manufacturing resources and... 

This study presents a comprehensive investigation into the characterization of three distinct homogeneous multilayer self-standing thin films, composed of stacked reduced graphene oxide (rGO) planes, which were synthesized using a modified Hummer’s method. In order to investigate their structural, electrical, and optical properties, the samples were characterized by field emission scanning electron microscopy (FESEM), Raman spectroscopy, four-point probe measurements, Impedance measurements, Fourier-transform infrared spectroscopy (FTIR), and Time domain Terahertz Spectroscopy (TDS). The FESEM images obtained from the samples reveal a smooth sheet-like surface with few wrinkles.... 

In today’s competitive market, an organization’s brand position is shaped not only through advertising and product quality but also directly through employee performance and attitudes. A substantial portion of customer experience depends on employee behavior, and any misalignment between brand values and promises with employee actions can undermine brand image. Internal branding serves as a strategic tool to align employees with brand values and to strengthen their brand commitment and brand identity. However, many organizations face challenges in translating this approach into tangible outcomes. Therefore, the present study aims to provide practical strategies for more effective... 

Despite adoption of HR analytics and the recognition of its importance by senior managers, its effective implementation in organizations remains a challenge. Given the benefits of HR analytics for organizations and the relative readiness of organizational structures to leverage it, this study seeks to answer the question: “How can HR analytics processes be effectively implemented in organizations?” Establishing an empirical foundation for improving existing theoretical models can significantly contribute to advancing this field. Using a single-case study approach, this research investigates the implementation of an employee engagement system through Officevibe software in a startup operating...