Molecular design of D-π-A-π-D conjugated molecules based on carbazole for application in solar cells

In order to obtain molecules with D-π-A-π-D (donor-π-acceptor-π-donor) architecture, having a high performances photovoltaic effect for the recommended for chemical synthesis for use in the field of organic solar cells. We took the M1 (Kadam et al., 2020) as a reference symbolized in this work by R; the acceptor unit A is replaced by other acceptors, the aim was to explore the efficient organic molecule by investigating the electronic, photovoltaic and optical properties. All calculations were done on Gaussian 09 software, the optimization of the structures of studied molecules, the calculation of HOMO - LUMO energies and the energy gap was carried out by density functional theory (DFT) at B3LYP/6-31G (d) functional. The vertical electronic excitation was determined using time dependent DFT (TD-DFT) at selected hybrid CAM-B3LYP functional. The aim was to find molecules wavelengths, the results established and the properties obtained show the importance of these molecules in the photovoltaic field

Nexus of Strategic Thinking, Knowledge-Oriented Leadership, and Employee Creativity in Higher Education Institutes

Purpose: The aim of this study is to examine strategic thinking and knowledge-oriented leadership influence employees' creativity in the setting of Jordanian private universities.   Theoretical framework: The study employed Path Goal Theory to clarify the interaction of the variables used in Higher Education Institutes to address the issue.   Design/methodology/approach: The research used a “partial least squares-structural equation modeling” approach to examine the gathered data. For analysis purpose, was developed and empirically verified with data (n = 143) obtained from a random sample of private universities in Jordan.   Findings: The result found that Strategic thinking promotes and increases employee creativity. However, knowledge-oriented leadership moderates the causal association between strategic thinking and employee creativity.   Research implications: The results are presented taking into account the relevant research as well as the practical implications for higher education administrators.   Originality/value: The novel theoretical contribution that was made by this study is its emphasis on knowledge-oriented leadership as a moderator in the link between strategic thinking and employee creativity

How Spiritual Leadership Influences Creative Behaviors: the Mediating Role of Workplace Climate

Purpose: The aim of this study is to examine the relationship between spiritual leadership and creative behavior with workplace climate as mediating variable in the Jordanian banking.   Theoretical framework: The purpose of this study, which extends the theories of intrinsic motivation and social exchange, is to acquire a deeper knowledge of the mechanisms underlying the relationship between spiritual leadership and innovative workplace behavior.   Design/methodology/approach: The study used quantitative research approach through a survey based on random sampling method from (n= 358) employees of 13 Jordanian commercial banks in Amman. For purposes of analysis, structural equation modeling was then utilized for the examination of the research hypotheses.   Findings: The results of the research indicated that workplace climate mediates the link between spiritual leadership and creative behavior. Specifically, greater levels of creative behavior among employees were related to spiritual leadership, as was a favorable working environment.   Research, Practical & Social implications: The study offers managerial and theoretical implications while considering the study’s limitations to provide guidance for the future.   Originality/value: The study identifies the magnificent influence of spiritual leadership and the workplace climate by delineating how these factors stimulate creative behaviors among employees. Specifically, the study focuses on how spiritual leadership and the workplace climate stimulate creative behaviors among employees. We examine the consequences of these findings for both research and practice

A 64-core mixed-signal in-memory compute chip based on phase-change memory for deep neural network inference

Analogue in-memory computing (AIMC) with resistive memory devices could reduce the latency and energy consumption of deep neural network inference tasks by directly performing computations within memory. However, to achieve end-to-end improvements in latency and energy consumption, AIMC must be combined with on-chip digital operations and on-chip communication. Here we report a multicore AIMC chip designed and fabricated in 14 nm complementary metal–oxide–semiconductor technology with backend-integrated phase-change memory. The fully integrated chip features 64 AIMC cores interconnected via an on-chip communication network. It also implements the digital activation functions and additional processing involved in individual convolutional layers and long short-term memory units. With this approach, we demonstrate near-software-equivalent inference accuracy with ResNet and long short-term memory networks, while implementing all the computations associated with the weight layers and the activation functions on the chip. For 8-bit input/output matrix–vector multiplications, in the four-phase (high-precision) or one-phase (low-precision) operational read mode, the chip can achieve a maximum throughput of 16.1 or 63.1 tera-operations per second at an energy efficiency of 2.48 or 9.76 tera-operations per second per watt, respectively

Catalog of total excitation-emission and total synchronous fluorescence maps with synchronous fluorescence spectra of homologated fluorescent pesticides in large use in Morocco: development of a spectrometric low cost and direct analysis as an alert method in case of massive contamination of soils and waters by fluorescent pesticides

The purpose of this research is to develop a direct spectrometric approach to monitor soils and waters, at a lower cost than the widely used chromatographic techniques; a spectrometric approach that is effective, reliable, fast, easy to implement, and without any use of organic solvents whose utilization is subject to law limitation. It could be suitable at least as an alert method in case of massive contamination. Here, we present for the first time a catalog of excitation– emission and total synchronous fluorescence maps that may be considered as fingerprints of a series of homologated pesticides, in large use in Morocco, aiming at a direct detection of their remains in agricultural soils and neighboring waters. After a large survey among farmers, agricultural workers and product distributors in two important agricultural regions of Morocco (Doukkala-Abda and Sebou basin), 48 commercial pesticides, which are fluorescent, were chosen. A multi-component spectral database of these targeted commercial pesticides was elaborated. For each pesticide, dissolved in water at the lowest concentration giving a no-noise fluorescence spectrum, the total excitation-emission matrix (TEEM), the total synchronous fluorescence matrix (TSFM) in addition to synchronous fluorescence spectra (SFS) at those offsets giving the highest fluorescence intensity were recorded. To test this preliminary multi-component database, two real soil samples, collected at a wheat field and at a vine field in the region of Doukkala, were analyzed. Remains of the commercial Pirimor (Carbamate) and Atlantis (Sulfonylurea) were identified by comparison of the recorded TEEM, TSFM, and SFS to those of the preliminary catalog at one hand, and on the basis of the results of a field pre-survey. The developed approach seems satisfactory, and the fluorimetric fingerprint database is under extension to a higher number of fluorescent pesticides in common use among the Moroccan agricultural regions