Structure of 2-(2-(anthracen-9-ylmethylene)hydrazinyl)-4-(3-methyl-3-phenylcyclobutyl)thiazole by combined X-Ray crystallographic and molecular modelling studies

A single crystal of 2-(2-(anthracen-9-ylmethylene)hydrazinyl)-4-(3-methyl-3-phenylcyclobutyl)thiazole (C29H25N3S) containing anthracene, thiazole and cyclobutane rings has been synthesised. The synthesised crystal structure was characterised using IR, 1H-NMR and 13C-NMR spectroscopic and X-Ray analysis techniques. In the crystal, neighbouring molecules formed chains along [110] by interconnecting with N–H···N hydrogen bonding and π–π interactions. The geometrical parameters of the title compound were optimised by Gaussian 09 software in the gas phase and Quantum-Espresso software under Periodic Boundary Conditions (PBC) in the solid phase. Theoretically, IR, NMR spectra, Mulliken, NPA and AIM atomic charges, Hirshfeld surface and frontier molecular orbitals (FMOs) of the title compound were examined. Using the Hirshfeld surface and two-dimensional (2D) fingerprint graphics, the presence of intermolecular interactions in the crystal packing were analysed. The energies of these interactions and their distribution on the crystal structure were shown graphically. In general, it was seen that theoretical calculations were consistent with X-Ray results. © 2020 Informa UK Limited, trading as Taylor & Francis Group

Design, implementation, and performance analysis of the WorldFIP/ATM local bridge

World factory instrumentation protocol (WorldFIP) is a fieldbus network protocol that provides a link between level zero (sensors/actuators) and level one (field controllers such as programmable logic controllers, etc.) in industrial automation systems. Accessing and connecting the WorldFIP remotely is important for monitoring, maintaining, and controlling devices in a factory in which asynchronous transfer mode (ATM) is used as a backbone network. In this study, a transparent WorldPIP/ATM bridge was designed and implemented in order to access devices on WorldFIP via an ATM network. This designed bridge may also provide control of the devices over wide area networks. The bridge's performance was investigated using network simulation software under various message traffic conditions. The results obtained from the simulations showed that the bridge provides real-time communications between WorldFIP and ATM

Relationship the level of internet addiction with personality traits of high school studentsLise öğrencilerinin internet bağımlılık düzeyinin kişilik özellikleriyle ilişkisi

Internet that adds the differences to the lives of the people from day it entered into the life of mankind and will continue to add these differences in the next years, causes the emergence of some negative effects when it is used except its intended purpose. Internet addiction is regarded as one of these drawbacks. This study examines the relationship between internet addiction and personality traits of high school students. Participants consist of 927 students (female= 440, 47.5%; male= 487, 52.5%) from various high schools in the provincial center of İstanbul.  The ages of the students vary from 14 to 18 and the majority of them are 16 years old. The results of this study, which is realized to analyze the relationship between internet addiction and personal traits, indicate that personality traits such as extraversion and openness were negatively low level related to internet addiction whereas conscientiousness was positively low level associated. When the variables of personality traits are considered as whole, it can be observed that a low level and positive significant relationship (R= .22, p< .01) reveals between internet addiction and personality traits. Özetİnternet insanoğlunun hayatına girdiği günden itibaren insanların hayatına farklılıklar katmış ve bundan sonraki süreçte de katmaya devam edecek gibi görünmektedir. Ancak internetin amacı dışında kullanılması bireyin günlük hayatını olumsuz şekilde etkileyen bazı aksaklıkların ortaya çıkmasına neden olmaktadır. Bu olumsuzluklardan biri de internet bağımlılığı olarak değerlendirilmektedir. Bu araştırmada lise öğrencilerinin internet bağımlılık düzeyinin kişilik özellikleriyle olan ilişkisinin araştırılması amaçlanmıştır. Araştırmanın katılımcıları İstanbul il merkezinde yer alan farklı liselerde öğrenim gören 927 öğrenciden oluşmuştur. Katılımcıların 440’ı (%47.5) bayan, 487’si (%52.5) erkektir. Öğrenciler 14 ile 18 yaşları arasında ve çoğunluğu 16 yaşındadır. İnternet bağımlılık düzeyinin kişilik özellikleriyle ilişkisini incelemek amacıyla yapılan bu çalışmada internet bağımlılık düzeyinin kişilik özelliklerine göre farklılaştığı tespit edilmiştir. İnternet bağımlılık düzeyinin dışadönüklük kişilik özelliğiyle düşük düzeyde negatif ilişkili, özdenetim kişilik özelliği ile düşük düzeyde pozitif ilişkili ve yeniliğe açıklık kişilik özelliği ile düşük düzeyde negatif ilişkili olduğu görülmektedir. Kişilik özellikleri değişkenleri birlikte ele alındığında internet bağımlılığı ile pozitif, düşük düzeyde ve anlamlı ilişkili olduğu görülmektedir (R= .22, p< .01)

Effects of Psychoeducational Program for Reducing Psychological Symptoms on Internet Addiction among Adolescents

This study aims to examine the effects of the psychoeducational program prepared by the researcher for reducing psychological symptoms on Internet addiction among adolescents. The research was conducted with 509 ninth-, tenth- and eleventh-grade students attending an Anatolian High School in Uskudar district of Istanbul province in the academic year of 2014-2015. The Internet Addiction Scale (IAS) and Brief Symptom Inventory (BSI) were used to choose the study group. Lots were drawn among 33 students who scored above the average in both scales to form the 24-participant research group. The participants were randomly assigned to the research groups (experimental, n= 12; control, n= 12). While the psychoeducational program prepared by the researcher was performed to the experimental group, no program was applied the control group. 2x3 (experimental/control groups X pretest/posttest/follow-up test) split plot design was used in the study. Two-factor variance analysis technique was utilized for repeated measures on one factor to determine whether there was a difference between measures and groups in the data analysis. Bonferroni post-hoc test was used to find the source of intergroup difference. According to the research findings, it was seen that effect of intervention x time was significant for all dependent variables of psychological symptoms and Internet addiction (p<.05). Results of Bonferroni post-hoc test and variance analysis showed that the psychoeducational program was effective in reducing psychological symptoms and Internet addiction, and this effect was retentive at the end of 45-day follow-up. The findings were discussed in line with the literature, and recommendations were made for future research

Astronomical Site Selection for Turkey Using GIS Techniques

A site selection of potential observatory locations in Turkey have been carried out by using Multi-Criteria Decision Analysis (MCDA) coupled with Geographical Information Systems (GIS) and satellite imagery which in turn reduced cost and time and increased the accuracy of the final outcome. The layers of cloud cover, digital elevation model, artificial lights, precipitable water vapor, aerosol optical thickness and wind speed were studied in the GIS system. In conclusion of MCDA, the most suitable regions were found to be located in a strip crossing from southwest to northeast including also a diverted region in southeast of Turkey. These regions are thus our prime candidate locations for future on-site testing. In addition to this major outcome, this study has also been applied to locations of major observatories sites. Since no goal is set for \textit{the best}, the results of this study is limited with a list of positions. Therefore, the list has to be further confirmed with on-site tests. A national funding has been awarded to produce a prototype of an on-site test unit (to measure both astronomical and meteorological parameters) which might be used in this list of locations.Comment: 17 pages, 10 figures, accepted by Experimental Astronom

The Development and Evolution of Digital Leadership: A Bibliometric Mapping Approach-Based Study

The inevitable digitalization of workplaces in the present era, generally as a result of technological developments, has caused a paradigm shift, along with new innovative business models and business behaviors, which has required leaders to possess certain digital skills for sustainable corporate performance. Hence, studies on digital leadership have attracted the attention of academics and practitioners worldwide, with many studies having been conducted on the topic. However, a comprehensive analysis of the intellectual architecture, knowledge structure, and thematic evolution of the digital leadership field of research using science mapping tools has yet to be conducted. The current study, therefore, aimed at reviewing the intellectual structure and evolution of the digital leadership field through a bibliometric and science-mapping analysis. This study used digital leadership as an umbrella term comprising leadership styles such as e-leadership, virtual leadership, technology leadership, and leadership 4.0, which have similar meanings and can be used interchangeably. With this purpose, bibliometric performance and science mapping analysis was performed on articles related to the research field that were retrieved from the Scopus database using SciMAT software (version 1.1.04). The results of the study revealed that the scope of digital leadership research is gradually expanding and diversifying and that publication output is increasing steadily. In addition, period-based analysis showed that the technology management theme during the first period, the virtual teams and technology themes during the second period, and the COVID-19, virtual reality, and digital technologies themes during the third period emerged as the motor themes and formed the focus of research in this field. Thematic evolution analysis showed that virtual leadership during the first and second periods, virtual teams during the second period, e-leadership and technology during the second and third periods, and digital leadership, COVID-19, and virtual reality during the third period, along with technology leadership in all three periods were all noteworthy as well-developed research themes. These findings enable a better understanding of the research field of digital leadership and provide a reference for future research by revealing the conceptual structure and thematic evolution of the digital leadership knowledge base

Rheological behaviour and yield characterization of gum from local isolates: Xanthomonas hortorum pv. pelargonii and Xanthomonas axonopodis pv. begonia

Xanthan production capacity of local isolates X. hortorum pv. pelargonii and X. axonopodis pv. begonia were investigated by systematically changing fermentation conditions. Optimum yields were found as 11.19 g/L, 9.72 g/L and9.65 g/L and for standard isolate X. campestris DSM 19000, X. hortorum pv. pelargonii and X. axonopodis pv. begonia, respectively. Optimum agitation rate and inoculum volume were found as 180 rpm and 5%. Moreover, better gelforming and thickening properties were obtained for xanthan gum from local isolates. Higher K value was observedfor gum solutions of the local isolates at all concentration when Ostwald de Waele model was used. Activation energies changed between 4.85 and 25.43 kJ/mol and it is the highest for gum from standard isolate. Moreover, K’ andK” values obtained from dynamic rheological analysis were higher for the local isolates than that of standard isolate.The results confirmed that the local isolates appeared to be suitable microorganisms for xanthan gum production

Experimental and theoretical studies on tautomeric structures of a newly synthesized 2,2'(hydrazine-1,2-diylidenebis(propan-1-yl-1-ylidene)) diphenol

WOS: 000424631900022In the present study, a single crystal of a Schiff base, 2,2'(hydrazine-1,2-diylidenebis(propan-1-yl-1-ylidene)) diphenol, was synthesized. The structure of the synthesized crystal was confirmed by H-1 and C-13 NMR spectroscopic and X-ray diffraction analysis techniques. Experimental and theoretical studies were carried out on two tautomeric structures. It has been observed that the title compound studied can be in two different tautomeric forms, phenol-imine and keto-amine. Theoretical calculations have been performed to support experimental results. Accordingly, the geometric parameters of the compound were optimized by the density functional theory (DFT) method using the Gaussian 09 and Quantum Espresso (QE) packet program was used for periodic boundary conditions (PBC) studies. Furthermore, the compound was also tested for in vitro antifungal activity against Sclerotinia sclerotiorum, Alternaria solani, Fusarium oxysporum f. sp. lycopersici and Monilinia fructigena plant pathogens. Promising inhibition profiles were observed especially towards A. solani. Finally, molecular docking studies and post-docking procedure based on Molecular Mechanics-Generalized Born Surface Area (MM-GBSA) were also carried out to get insight into the compound's binding interactions with the potential. Although theoretical calculations showed that the phenol-imine form was more stable, keto-amine form was predicted to have better binding affinity which was concluded to result from loss of rotational entropy in phenol-imine upon binding. The results obtained here from both experimental and computational methods might serve as a potential lead in the development of novel anti-fungal agents. (C) 2018 Elsevier B.V. All rights reserved.Research Centre of Ahi Evran University [PYO-MUH.4001.15.004]This study was supported financially by the Research Centre of Ahi Evran University (PYO-MUH.4001.15.004). In addition, the numerical calculations reported in this paper were partially performed at TUBITAK ULAKBIM, High Performance and Grid Computing Center (TRUBA resources)