Thus, actions are mandatory and not voluntary, affecting all companies equally whether they have high levels of Corporate Social Responsibility implementation or not. Regarding relations with public authorities, the results indicate that improvement is urgently required, given the low participation of marine tourism companies in policy making.Image segmentation is an essential phase of computer vision in which useful information is extracted from an image that can range from finding objects while moving across a room to detect abnormalities in a medical image. As image pixels are generally unlabelled, the commonly used approach for the same is clustering. This paper reviews various existing clustering based image segmentation methods. Two main clustering methods have been surveyed, namely hierarchical and partitional based clustering methods. As partitional clustering is computationally better, further study is done in the perspective of methods belonging to this class. Further, literature bifurcates the partitional based clustering methods into three categories, namely K-means based methods, histogram-based methods, and meta-heuristic based methods. The survey of various performance parameters for the quantitative evaluation of segmentation results is also included. Further, the publicly available benchmark datasets for image-segmentation are briefed.This article introduces the concept of African same-sex sexualities and gender diversity which refers to variation pertinent to gender expressions and identities, sexual expression and sexual orientation. The article describes the emerging and evolving African scholarly production evident in the last two decades and describes key underlying themes that bring together this special issue.This study investigates the impact of integrating essential factors on academic performance in university students’ context. The proposed model examines the influence of continuance intention, satisfaction, information value, and Internet addiction on academic performance. Additionally, it investigates the mediating role of continuance intention on the relationship of satisfaction and information value on academic performance among university students. A survey questionnaire method was adopted to collect data from university students in Jordan. Data was collected from 476 voluntary participants, and the analysis was conducted using SPSS and AMOS. The analysis results show that continuance intention, satisfaction, information value have a significant positive influence on academic performance. Besides, the results show that satisfaction and information value positively and significantly influence continuance intention. While continuance intention full mediation the relationship between satisfaction and academic performance, it partial mediation the relationship between information value and academic performance. This study is the first to examine the integrating of continuance intention, satisfaction, information value, and Internet addiction on students’ academic performance. Furthermore, this study is also distinguished from other studies by investigating the mediating role of continuance intention gap.A primary effort within the literature addresses the needs in acclimatizing dynamic, student-driven instruction to conceive a significantly enhanced online learning environment. This study serves to examine the relationship, if any, between student characteristics (introversion and extraversion) and contribution in the online writing environment (social presence) and their sense of class community in online writing courses. NSC 23766 inhibitor The research was undertaken in a public university in the Kingdom of Saudi Arabia (KSA), examining a sample (N = 171, 36 males and 135 females) of EFL male and female students. The results confirmed the ICT positive relationships between extraverted and introverted students with their social presence and sense of class community. These results reinforce the instructor’s significant role in implementing and engaging students in learning experiences that can address the need for different types of students (e.g., extraverts, introverts) and enhance their interaction through online platforms. The study further calls for developing pedagogically sound approaches to shift away from instructor-fed to student-centered online learning that incorporates instructors’ facilitation, constructive and continuous feedback, and clear guidance. It further urges the utilization of sociopsychological methods to address individual differences, especially in online learning.A structural harm results from countless apparently innocuous interactions between a great many individuals in a social system, and not from any agent’s intentionally producing the harm. Iris Young has influentially articulated a model of individual moral responsibility for such harms, and several other philosophers have taken it as their starting point for dealing with the phenomenon of structural injustice. In this paper, I argue that this social connection model is far less realistic and socially effective than it aims to be. This is because the model systematically neglects the key role played by the emotions in human moral life.In gradual Solar Energetic Particle (SEP) events, shock waves driven by coronal mass ejections (CMEs) play a major role in accelerating particles, and the energetic particle flux enhances substantially when the shock front passes by the observer. Such enhancements are historically referred to as Energetic Storm Particle (ESP) events, but it remains unclear why ESP time profiles vary significantly from event to event. In some cases, energetic protons are not even clearly associated with shocks. Here, we report an unusual, short-duration proton event detected on 5 June 2011 in the compressed sheath region bounded by an interplanetary shock and the leading edge of the interplanetary CME (or ICME) that was driving the shock. While  30 MeV) protons were detected about four hours after the shock arrival, apparently correlated with a turbulent magnetic cavity embedded in the ICME sheath region.COVID-19 (Corona Virus Disease 2019) is a severe respiratory syndrome currently causing a human global pandemic. The original virus, along with newer variants, is highly transmissible. Aerosols are a multiphase system consisting of the atmosphere with suspended solid and liquid particles, which can carry toxic and harmful substances; especially the liquid components. The degree to which aerosols can carry the virus and cause COVID-19 disease is of significant research importance. In this study, we have discussed aerosol transmission as the pathway of SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2), and the aerosol pollution reduction as a consequence of the COVID-19 lockdown. The aerosol transmission routes of the SARS-CoV-2 can be further subdivided into proximal human-exhaled aerosol transmission and potentially more distal ambient aerosol transmission. The human-exhaled aerosol transmission is a direct dispersion of the SARS-CoV-2. The ambient aerosol transmission is an indirect dispersion of the SARS-CoV-2 in which the aerosol acts as a carrier to spread the virus.