The Influence of Nonextensivity on Orientational Ordering in Liquid Crystal Systems with Variable Molecular Shape

A generalized model taking into account the photoisomerization influence on the nematic ordering is presented. This generalized theory is used to investigate the effect of the nonextensivity on the concentration dependence of the long-range order parameter. The q-dependent variation of the concentration of cis-trans isomers and of the order parameter with the time of exposure to the illumination is investigated within nonextensivity. It is also shown that for sufficiently long exposition of the mesophase to the illumination the nematic phase cannot disappear for some value of the entropic index, coming from Tsallis statistics. Moreover it is shown that long range interactions or the fractal structure in the liquid crystalline system might affect the characteristics of the phase transition in the physical system. We think therefore that this conclusion might shed light on the interaction potential energy terms in the similar system in future possible experiments, even to be performed on new objects with different symmetries.Comment: 18 pages together with 5 figures. Accepted for publication in Physica

Empathy, a Facility to Reduce Conflict Among Individuals and Societies, and the Qur’ān

The aim of this study is to clarify whether the content of empathy, which is considered the process that motivates prosocial behaviour and prevents individuals and people doing harm to each other, is in harmony with the Qurʾān or not. If Muslims understand each other and non-Muslims as well, this will help in decreasing the conflicts and contribute to world peace. In this paper, to present the theoretical framework of empathy we will consider the concepts closely related to empathy such as sympathy and altruism etc. After that, we will discuss the verses that appear to be related to empathy in the Qurʾān. During that effort, a risk of exceeding our human level awaits us: To claim that we can empathize with God. Can we put ourselves in His place? I must say from the perspective of the Muslim approach “No!” Nevertheless, considering both classical and modern era Qur’anic commentaries, we can investigate God’s Book sent to the prophet Muḥammad (pbuh) to understand His intention. This is quite normal unless we claim that our level of understanding is absolute. According to preliminary findings, people are encouraged by the Qurʾān to do self-criticism, to keep themselves away from transgression, and not to take revenge. We suggest that, taken together, the logic behind these recommendations is for us to develop a sense of empathy in any situation of conflict

Online Deep Learning for Improved Trajectory Tracking of Unmanned Aerial Vehicles Using Expert Knowledge

This work presents an online learning-based control method for improved trajectory tracking of unmanned aerial vehicles using both deep learning and expert knowledge. The proposed method does not require the exact model of the system to be controlled, and it is robust against variations in system dynamics as well as operational uncertainties. The learning is divided into two phases: offline (pre-)training and online (post-)training. In the former, a conventional controller performs a set of trajectories and, based on the input-output dataset, the deep neural network (DNN)-based controller is trained. In the latter, the trained DNN, which mimics the conventional controller, controls the system. Unlike the existing papers in the literature, the network is still being trained for different sets of trajectories which are not used in the training phase of DNN. Thanks to the rule-base, which contains the expert knowledge, the proposed framework learns the system dynamics and operational uncertainties in real-time. The experimental results show that the proposed online learning-based approach gives better trajectory tracking performance when compared to the only offline trained network.Comment: corrected version accepted for ICRA 201

Islamophobia in European Schools: A Multinational Phenomenological Research

This study, which aims to investigate the existence of Islamophobia in European schools, an important part of the social structure, is designed as a phenomenological study. Data were collected through interviews with 36 teachers working in seven different European countries. As a result of the study, Islamophobia has been identified as an unignorable and a major problem in European schools. Moreover, it reveals that the teachers do not have enough knowledge about Islam, but the majority of participants have open or hidden Islamophobic tendencies. In addition, the teachers think that Islamic lifestyles and Muslims are not part of European cultures and that Muslim students should be subjected to intense cultural training. Again, the majority of the participants argue that the fight against Islamophobia can be achieved through prejudice and communication training for teachers. This study is important in that it is a pioneering work in the literature that investigates the entity of Islamophobia among teachers in Europe