Reinforcing Effect of Terrorism and Corruption Nexus on Net Migration from Developing Countries: An Empirical Analysis

The study intends to investigate the direct and indirect effect of terrorism and corruption on net migration for thirty-eight developing countries, along with other macroeconomic determinants like per capita GDP, globalization, inflation and institutional quality for the time period 1985-2015. Based on the Fixed and Random Effects models, findings show that terrorism and GDP per capita has negative while globalization has positively significant effect on the net migration in selected developing countries. The corruption and terrorism appeared to reinforcing each other in stimulating migration. Particularly, terrorism seeks its ways through corrupt financial activities which distorts the labor market and ultimately results in relatively large out-migration. The study suggests implementation of stiff anti-terrorism policies to improve domestic environment along with promoting globalization in such a way which can offer positive effect of out-migration on the domestic economy in the long run. And that is expected to take place at the onset of return migration of labor with enhanced skills and capabilities

Asymptotic properties for Volterra integro-dynamic systems

Using the resolvent matrix, a comparison principle and a useful equivalent system, we investigate the asymptotic behavior of linear Volterra integro-dynamic systems on time scales

Stability Criteria for Volterra Integrodynamic System

We study conditions under which the solutions of linear Volterra integrodynamic system of the form yΔt=Atyt+∫t0tKt,sysΔs are stable on certain time scales. We construct a number of Lyapunov functionals on time scales from which we obtain necessary and sufficient conditions for stability of Volterra integrodynamic system and also we prove several results concerning qualitative behavior of this system

Structure and Magnetism of the New Cage-structured Compound HfMn2_{2}Zn20_{20}

A new cage-structured compound - HfMn$_{2}$Zn$_{20}$ - belonging to the AB$_{2}$C$_{20}$ (A, B = transition or rare earth metals, and C = Al, Zn, or Cd) family of structures has been synthesized via the self-flux method. The new compound crystallizes in the space group Fd-3m with lattice parameter a = 14.0543(2) \r{A} (Z = 8) and exhibits non-stoichiometry due to Mn/Zn mixing on the Mn-site and an underoccupied Hf-site. The structure refines to Hf$_{0.93}$Mn$_{1.63}$Zn$_{20.37}$ and follows lattice size trends when compared to other HfM$_{2}$Zn$_{20}$ (M = Fe, Co, and Ni) structures. The magnetic measurements show that this compound displays a modified Curie-Weiss behavior with a transition temperature around 22 K. The magnetization shows no saturation, a small magnetic moment, and near negligible hysteresis, all signs of the itinerant magnetism.Comment: 15 pages, 5 figure

Perceptions about Telemedicine among Populations with Chronic Diseases amid COVID-19: Data from a Cross-Sectional Survey

Chronic diseases, including non-communicable diseases (NCDs), have arisen as a severe threat to health and socio-economic growth. Telemedicine can provide both the highest level of patient satisfaction and the lowest risk of infection during a pandemic. The factors associated with its usage and patient adherence are not visible in Bangladesh's resource-constrained settings. Therefore, this study aimed to identify perceptions about telemedicine among populations with chronic diseases amid the COVID-19 pandemic. A closed-ended self-reported questionnaire was created, and the questionnaire was written, reviewed, and finalized by a public health investigator, a psychiatrist, and an epidemiologist. The data for this study were collected from individuals using simple random sampling and snowball sampling techniques. Ethics approval was granted, and written/verbal consent was taken before interviews. Most of the participants showed a positive attitude towards telemedicine. People aged 35-54 years old and a higher level of education were less frequently associated with willingness to receive telemedicine services for current chronic disease (WRTCCD) than their counterparts. People living in urban areas and lower-income participants were more strongly associated with WRTCCD. Additionally, people who did not lose their earnings due to the pandemic were less strongly associated with WRTCCD. However, the main strength of this research is that it is a broad exploration of patient interest in several general forms of telehealth. In Bangladesh, there are many opportunities for telemedicine to be integrated into the existing healthcare system, if appropriate training and education are provided for healthcare professionals

High-Resolution Hybrid Printing of 3D Electronics

Highly integrated on-demand printed electronics have gained lots of popularity recently. Most of the fabrication methods that are currently used in the industry are constraints to one technology and also one material class. These also limit the geometry design and the resolution of the finished products. To address this problem, the hybrid printing process is a promising technique to effectively fabricate 3D electronics. Hybrid printing is the future of printed electronics. In the study, a high-resolution (~100 microns) hybrid printing process has been developed which combines extrusion-based printing (EBP) and Electrohydrodynamic (EHD) printing with polymeric and metallic material respectively. In our experiment, we characterized and verified the effect of several critical parameters like printing speed, pressure, voltage, and overlap on the printing method and quality of the printed features. To obtain high-efficient and high-resolution printing, the optimal set of printing parameters was identified. The optimal printing result obtained for PLA 1st layer is pressure 0.8kg/cm2, speed 1mm/s, overlap 25%. The best printing results for PLA 2nd layer are speed 0.4mm/s, pressure 1kg/cm2, and overlap 11%. For metal EHD printing, the best results obtained are speed 0.3mm/s, and voltage 1.5KV. Finally, a hybrid printing system is applied to fabricate high-resolution 3D electronics which demonstrates the potential capabilities of developed hybrid printing process for producing customized 3D microelectronic

Hermite-Hadamard-Fejér Type Inequalities for Preinvex Functions Using Fractional Integrals

In this paper, we have established the Hermite−Hadamard−Fejér inequality for fractional integrals involving preinvex functions. The results presented here provide new extensions of those given in earlier works as the weighted estimates of the left and right hand side of the Hermite−Hadamard inequalities for fractional integrals involving preinvex functions doesn’t exist previously

Optimal Derivative-Free Root Finding Methods Based on Inverse Interpolation

Finding a simple root for a nonlinear equation f ( x ) = 0 , f : I ⊆ R → R has always been of much interest due to its wide applications in many fields of science and engineering. Newton’s method is usually applied to solve this kind of problems. In this paper, for such problems, we present a family of optimal derivative-free root finding methods of arbitrary high order based on inverse interpolation and modify it by using a transformation of first order derivative. Convergence analysis of the modified methods confirms that the optimal order of convergence is preserved according to the Kung-Traub conjecture. To examine the effectiveness and significance of the newly developed methods numerically, several nonlinear equations including the van der Waals equation are tested

Stability Criteria for Nonlinear Volterra Integro-Dynamic Systems

We study conditions under which the solutions of nonlinear Volterra integro-dynamic system of the form xD (t) = A(t)x(t)+ Z t t0 K(t, s, x(s))D s are stable on certain time scales. We give sufficient and necessary conditions for various types of stability, including uniform stability, asymptotic stability, exponential asymptotic stability and strong stability