Browse

You are looking at 131 - 140 of 91,512 items for

Open access

Robert Čecho, Viera Švihrová, Dominika Čecho, Martin Novák and Henrieta Hudečková

Abstract

Introduction

Published research studies in Central Europe have been mostly oriented toward occupational stress among schoolteachers. The aim of this study is to investigate the level of occupational stress in kindergarten teachers and to specify psychosocial risks associated with their work.

Methods

The study was conducted by using a Meister questionnaire and a Psychosocial risk questionnaire. The data collection was obtained from kindergarten teachers in 2017. The survey link with request was sent to participants via email. A total 287 questionnaires from 67 kindergarten schools were collected.

Results

192 (66.9%) teachers perceived their work as mentally burdensome. Teachers who perceived their work as mentally non-burdening were more likely to report autonomy in their work (p=0.001), fair performance evaluation (p=0.010), sufficient family time (p=0.005), a health-protected workplace (p=0.000) and absence of violence and bullying (p=0.042). Teachers with a university degree perceiving work as mentally burdensome reported that their work was not adequately assessed (p=0.034). Teachers over 45 years of age with school practice of over 20 years reported injustice in evaluating work performance against younger colleagues (p=0.000).

Conclusion

Kindergarten teachers reported overloading, time pressure, and high responsibility, but considered their work interesting. However, changing the way teachers work in schools can reduce teacher resignation and improve teachers’ well-being.

Open access

Jure PUC, Petra Obadić, Vanja Erčulj, Ana Borovečki and Štefan Grosek

Abstract

Objective

To survey university students on their views concerning the respect for autonomy of patients and the best interest of patients in relation to the withholding of resuscitation.

Methods

A cross-sectional survey among university students of medicine, nursing, philosophy, law and theology of the first and the final study years at the University of Ljubljana and the University of Zagreb was conducted during the academic year of 2016/2017. A questionnaire constructed by Janiver et al. presenting clinical case vignettes was used.

Results

The survey response rates for students in Ljubljana and Zagreb were 45.4% (512 students) and 37.9% (812 students), respectively. The results of our research show statistically significant differences in do-not resuscitate decisions in different cases between medical and non-medical students in both countries. Male and religious students in both countries have lower odds of respecting relatives’ wishes for the withholding of resuscitation (odds ratio 0.49–0.54; 95% confidence interval). All students agreed that they would first resuscitate children if they had to prioritize among patients.

Conclusions

Our study clearly shows that gender, religious beliefs, and type of study are important factors associated with the decisions pertaining to the respect for autonomy, patient’s best interest, and initiation or withholding of resuscitation.

Open access

Berhanu Assaye, Mihret Alamneh, Lakshmi Narayan Mishra and Yeshiwas Mebrat

Abstract

In this paper, we introduce the concept of dual skew Heyting almost distributive lattices (dual skew HADLs) and characterise it in terms of dual HADL. We define an equivalence relation θ on a dual skew HADL L and prove that θ is a congruence relation on the equivalence class [x]θ so that each congruence class is a maximal rectangular subalgebra and the quotient [y]θ/θ is a maximal lattice image of [x]θ for any y ∈ [x]θ. Moreover, we show that if the set PI (L) of all the principal ideals of an ADL L with 0 is a dual skew Heyting algebra then L becomes a dual skew HADL. Further we present different conditions on which an ADL with 0 becomes a dual skew HADL.

Open access

Abaid ur Rehman Virk, Tanveer Abbas and Wasim Khalid

Abstract

Topological indices helps us to collect information about algebraic graphs and gives us mathematical approach to understand the properties of chemical structures. In this paper, we aim to compute multiplicative degree-based topological indices of Silicon-Carbon Si2C3−III[p,q] and SiC3−III[p,q] .

Open access

A. Gadalla, M. S. Abd El-Sadek and R. Hamood

Abstract

This paper attempts to describe an effective method for producing a composite of quantum dots consisting of CdSe (core) with CdS (shell). This nanoparticles composite was synthesized from modified organometallic precursors. The sizes of the nanoparticles were estimated from X-ray diffraction data using Debye-Scherer formula and compared with high resolution electron microscopy (HRTEM) and optical spectra. The shape of CdSe/CdS NPs is nearly spherical and revels that the CdS shell with the thickness ~0.6 nm almost fully covers the CdSe core (higher contrast). Using UV-Vis spectroscopy, a systematic red shift in the absorption and emission spectra was observed after the deposition of CdS which confirms the shell growth over the CdSe core. In the CdSe/CdS core/shell structure, the holes are confined to the core, while the electrons are delocalized as a result of similar electron affinities of the core and the shell. The increased time of synthesis resulted in shell thickness increase. The observed properties of prepared CdSe/CdS QDs demonstrate the capability of the nanocomposite for using in the optoelectronics and photonics devices.

Open access

Mohamed Akkouchi and Mohamed Amine Ighachane

Abstract

The aim of this paper is to give some refinements to several inequalities, recently etablished, by P.K. Bhandari and S.K. Bissu in [Inequalities via Hölder's inequality, Scholars Journal of Research in Mathematics and Computer Science, 2 (2018), no. 2, 124–129] for the incomplete gamma function, Polygamma functions, Exponential integral function, Abramowitz function, Hurwitz-Lerch zeta function and for the normalizing constant of the generalized inverse Gaussian distribution and the Remainder of the Binet's first formula for ln Γ(x).

Open access

Dorota Bród

Abstract

In this paper we present a new one parameter generalization of the classical Pell numbers. We investigate the generalized Binet's formula, the generating function and some identities for r-Pell numbers. Moreover, we give a graph interpretation of these numbers.

Open access

Bağdagül Kartal

Abstract

In the present paper, two theorems of absolute summability have been proved by using the definition of almost increasing sequence.

Open access

Matej Babič, Miłosz Andrzej Huber, Elzbieta Bielecka, Metin Soycan, Wojciech Przegon, Ljubomir Gigović, Siniša Drobnjak, Dragoljub Sekulović, Ivan Pogarčić, George Miliaresis, Matjaž Mikoš and Marko Komac

Abstract

Many problems in the analysis of natural terrain surface shapes and the construction of terrain maps to model them remain unsolved. Almost the whole process of thematic interpretation of aerospace information consists of a step-by-step grouping and further data conversion for the purpose of creating a completely definite, problematically oriented picture of the earth’s surface. In this article, we present application of a new method of drawing 3D visibility networks for pattern recognition and its application on terrain surfaces. For the determination of complexity of 3D surface terrain, we use fractal geometry method. We use algorithm for constructing the visibility network to analyse the topological property of networks used in complex terrain surfaces. Terrain models give a fast overview of a landscape and are often fascinating and overwhelmingly beautiful works by artists who invest all their interest and an immense amount of work and know-how, combined with a developed sense of the portrayed landscape, in creating them. At the end, we present modelling of terrain surfaces with topological properties of the visibility network in 3D space.