A Solvent-free Synthesis of Polyhydroquinolines via Hantzsch Multicomponent Condensation Catalyzed by Nanomagnetic-supported Sulfonic Acid

A simple and efficient procedure for the synthesis of polyhydroquinolines was developed, involving a one-pot four-component Hantzsch condensation of aromatic aldehydes, 1,3-cyclohexanediones, alkyl acetoacetate and ammonium acetate in the presence of a catalytic amount of nanomagnetic-supported sulfonic acid under solvent-free conditions. The method offers several advantages including high yields, short reaction times, a simple work-up procedure and catalyst reusability for several runs. Furthermore, easy isolation of the catalyst from the reaction mixture was enabled by use of an external magnet.KEYWORDS Nanomagnetic-supported sulfonic acid, multicomponent reaction, solvent-free conditions, heterocyclic compound, Hantzsch reaction

Validation Frameworks for Self-Driving Vehicles: A Survey

Peer reviewe

Socially and biologically inspired computing for self-organizing communications networks

The design and development of future communications networks call for a careful examination of biological and social systems. New technological developments like self-driving cars, wireless sensor networks, drones swarm, Internet of Things, Big Data, and Blockchain are promoting an integration process that will bring together all those technologies in a large-scale heterogeneous network. Most of the challenges related to these new developments cannot be faced using traditional approaches, and require to explore novel paradigms for building computational mechanisms that allow us to deal with the emergent complexity of these new applications. In this article, we show that it is possible to use biologically and socially inspired computing for designing and implementing self-organizing communication systems. We argue that an abstract analysis of biological and social phenomena can be made to develop computational models that provide a suitable conceptual framework for building new networking technologies: biologically inspired computing for achieving efficient and scalable networking under uncertain environments; socially inspired computing for increasing the capacity of a system for solving problems through collective actions. We aim to enhance the state-of-the-art of these approaches and encourage other researchers to use these models in their future work

The effect of educational program on self-care behaviors of candidates for coronary artery angiography

Context: Cardiovascular disease is one of the leading causes of mortality and disability in the world and its prevalence is increasing. Aim: The aim of the study was to determine the effect of educational program on self-care behaviors of candidates for coronary artery angiography. Setting and Design: This study was a quasi-experimental interventional study conducted at Imam Hossein Hospital in Mehran/Ilam in 2018. Materials and Methods: One hundred and twenty-six candidates for coronary artery angiography were randomly divided into two groups of intervention and control and completed the Cardiac Patients Learning Needs Inventory. The intervention group was trained with cardiovascular care educational program after angiography. After 2 weeks, the questionnaire was completed again by both groups. Statistical Analysis Used: Data were analyzed using Kolmogorov-Smirnov test, t-test, and paired t-test using SPSS software version 18. Results: The educational needs of the subjects were measured in eight areas of self-care (introduction to the cardiac intensive care unit, anatomy and physiology, psychological factors, risk factors, pharmaceutical information, nutritional information, physical activity, and other information). Most of the samples had moderate-to-high educational need (intervention group = 3.46) and (control group = 3.86), and the educational need in intervention group reached 1.62, which was significant (P < 0.001), but there was no significant change (P = 0.871) in the control group (3.31). Conclusion: Promoting self-care behaviors in patients undergoing coronary angiography using educational interventions is important and necessary. The curriculum that is designed and used in this study is recommended as a sample

Platoon management with cooperative adaptive cruise control enabled by VANET

Previous studies have shown the ability of vehicle platooning to improve highway safety and throughput. With Vehicular Ad-hoc Network (VANET) and Cooperative Adaptive Cruise Control (CACC) system, vehicle platooning with small headway becomes feasible. In this paper, we developed a platoon management protocol for CACC vehicles based on wireless communication through VANET. This protocol includes three basic platooning maneuvers and a set of micro-commands to accomplish these maneuvers. Various platooning operations such as vehicle entry and vehicle (including platoon leader) leaving can be captured by these basic platoon maneuvers. The protocol operation is described in detail using various Finite State Machines (FSM), and can be applied in collaborative driving and intelligent highway systems. This protocol is implemented in an integrated simulation platform, VENTOS, which is developed based on SUMO and OMNET++. The validity and effectiveness of our approach is shown by means of simulations, and different platooning setting are calibrated