Wei Zhang

Over the past few decades, a considerable amount of interest has been observed for improving the overall road transportation across the globe, primarily to enhance the safety of vehicular passengers and vulnerable road pedestrians. Vehicular Ad hoc NetworksVehicular Ad hoc Networks are anticipated to play a critical role in smart cities and Internet of Things domain. Instead, it is expected that a new paradigm of Internet of VehiclesInternet of Vehicles will soon become an important component of the IoT. Also, since the connected vehicles primarily disseminate safety-critical information, it is imperative to have an extremely secure and trusted network so that critical data information could be traversed with extreme reliability and authenticity. Unlike conventional wired networks, vehicular networks are highly dynamic, distributed and of open nature, and are, therefore, susceptible to various attacks such as replayReplay, spoofingSpoofing, eavesdroppingEavesdropping, man-in-the-middleMan-in-the-middle, distributed denial-of-serviceDenial-of-service, blackhole, grayhole, SybilSybil and other malware attacksMalware attacks. To address the same, numerous mechanisms have been proposed in the literature, mainly relying on traditional cryptographyCryptography techniques. Nevertheless, cryptography-based solutions are not effective in VANETs since nodes in this network are highly dynamic and distributed across the network. Moreover, the network infrastructure cannot be guaranteed permanently, and cryptographic solutions may also get compromised due to insider attacks in a network. This chapter aims to provide an in-depth investigation of a diverse range of security attacks challenging the actual realisation of vehicular networks. In contrast to conventional security solutions, it brings forth the need for trust management for securing vehicular networks for ensuring reliability, authenticity and relevance by revoking both malicious and selfish nodes. It also briefly highlights the need for trust models and illustrates the characteristics of data-oriented trust models, entity-oriented trust models and hybrid trust models. Furthermore, since the conventional networks are being transformed via the promising yet emerging notion of software-defined networking, a brief discussion is presented so as to illustrate how a reconfigurable, reprogrammable and agile infrastructure can help in guaranteeing more secure vehicular networking platforms which are indispensable for futuristic Intelligent Transportation SystemIntelligent Transportation System applications and services.

Over the past few decades, a considerable amount of interest has been observed for improving the overall road transportation across the globe, primarily to enhance the safety of vehicular passengers and vulnerable road pedestrians. Vehicular Ad hoc Networks are anticipated to play a critical role in smart cities and Internet of Things domain. Instead, it is expected that a new paradigm of Internet of Vehicles will soon become an important component of the IoT. Also, since the connected vehicles primarily disseminate safety-critical information, it is imperative to have an extremely secure and trusted network so that critical data information could be traversed with extreme reliability and authenticity. Unlike conventional wired networks, vehicular networks are highly dynamic, distributed and of open nature, and are, therefore, susceptible to various attacks such as Replay, Spoofing, Eavesdropping, Man-in-the-middle, distributed Denial-of-service, blackhole, grayhole, Sybil and other Malware attacks. To address the same, numerous mechanisms have been proposed in the literature, mainly relying on traditional Cryptography techniques. Nevertheless, cryptography-based solutions are not effective in VANETs since nodes in this network are highly dynamic and distributed across the network. Moreover, the network infrastructure cannot be guaranteed permanently, and cryptographic solutions may also get compromised due to insider attacks in a network. This chapter aims to provide an in-depth investigation of a diverse range of security attacks challenging the actual realisation of vehicular networks. In contrast to conventional security solutions, it brings forth the need for trust management for securing vehicular networks for ensuring reliability, authenticity and relevance by revoking both malicious and selfish nodes. It also briefly highlights the need for trust models and illustrates the characteristics of data-oriented trust models, entity-oriented trust models and hybrid trust models. Furthermore, since the conventional networks are being transformed via the promising yet emerging notion of software-defined networking, a brief discussion is presented so as to illustrate how a reconfigurable, reprogrammable and agile infrastructure can help in guaranteeing more secure vehicular networking platforms which are indispensable for futuristic Intelligent Transportation System applications and services.

On the basis of Buber’s distinction between “I-It” and “I-Thou” relationships, this paper explores the role of sex in intimate relationships by analyzing research in the fields of psychoanalysis and attachment theory. In the “I-Thou” relationship mode, both parties are often able to fully participate in the current sexual behavior and respond wholeheartedly. When there is incoordination in sexual activities, they can negotiate sincerely, and can even repair the relationship if it breaks down. In the “I-It” relationship mode, sex exists more as a tool to achieve a certain purpose, and the intersubjective relatedness is abnormal: either the boundary will be blurred and others become my vassal or I become others’ vassal ; or the relatedness will be cut off, leading to loneliness or false independence.

This paper presents an active fault-tolerant control strategy for quadrotor helicopters to simultaneously accommodate sensor faults and external disturbances. Unlike most of the existing fault diagnosis and fault-tolerant control schemes for quadrotor helicopters, the proposed fault diagnosis scheme is able to estimate sensor faults while eliminating the effect of external disturbances. Moreover, the proposed fault-tolerant control scheme is capable to eliminate the adverse effect of external disturbances as well by designing a disturbance observer to effectively estimate the unknown external disturbances and integrating with the designed integral sliding-mode controller. In this case, the continuous operation of the quadrotor helicopter is ensured while avoiding the unexpected control chattering. In addition, the stability of the closed-loop system is theoretically proved. Finally, the effectiveness and advantages of the proposed scheme are validated and demonstrated through comparative numerical simulations of the quadrotor helicopter under different faulty and uncertain scenarios.

BackgroundThe neural activity and functional networks of emotion-based cognitive reappraisal have been widely investigated using electroencephalography and functional magnetic resonance imaging. However, single-mode neuroimaging techniques are limited in exploring the regulation process with high temporal and spatial resolution.ObjectivesWe proposed a source localization method with multimodal integration of EEG and fMRI and tested it in the source-level functional network analysis of emotion cognitive reappraisal.MethodsEEG and fMRI data were simultaneously recorded when 15 subjects were performing the emotional cognitive reappraisal task. Fused priori weighted minimum norm estimation with sliding windows was proposed to trace the dynamics of EEG source activities, and the phase lag index was used to construct the functional brain network associated with the process of downregulating negative affect using the reappraisal strategy.ResultsThe functional networks were constructed with the measure of PLI, in which the important regions were indicated. In the gamma band source-level network analysis, the cuneus, the lateral orbitofrontal cortex, the superior parietal cortex, the postcentral gyrus, and the pars opercularis were identified as important regions in reappraisal with high betweenness centrality.ConclusionThe proposed multimodal integration method for source localization identified the key cortices involved in emotion regulation, and the network analysis demonstrated the important brain regions involved in the cognitive control of reappraisal. It shows promise in the utility in the clinical setting for affective disorders.

Due to the COVID-19 pandemic, most employees face increasing career-related stress, particularly those who work in multinational corporations, because the international travel constraints prevent them from going back to their families. Hence, it is imperative to investigate the critical impact of employees’ occupational burnout on career-related outcomes. In response, this research explores the moderating effect of OB on the relationships between career competencies and career sustainability. To achieve a more comprehensive understanding of relevant issues, we adopted a mixed-method research design that includes both qualitative and quantitative analyses. Findings indicate that all the three dimensions of CCs were positively related to CS; moreover, OB negatively moderated the individual relationships of CC and BC with CS. The main contribution of this study is to enrich the existing career literature by addressing the critical moderating role of OB in the links of CC and BC individually with CS. Practical implications are also discussed in this study.

Some studies show that athlete students are more likely to engage in health-risk behaviors with negative health consequences, while others suggest that they lead a healthier life than their non-athlete peers. Given these inconsistent results, this study aims to compare health behaviors, depression, and perceived health status between athlete and non-athlete students, and explore the associations between health behaviors and health outcomes. An online questionnaire survey including Heath Habits Scale for five health-risk behaviors and five health-promoting behaviors, Patient Health Questionnaire-9, and 5-point scale for perceived health status was conducted in Beijing Sports University in March 2021. Data from 372 athlete students and 252 non-athlete students aging from 18 to 22 were included in this study. Chi-squared tests and t-tests were used to determine differences between athlete and non-athlete samples, and logistic regression analyses were conducted to examine the associations of health behaviors with depression and perceived health status. The significance level was p < 0.05. The results show that compared with non-athlete students, athlete students perform better in health habits, report lower proportion of depression and higher proportion of good health. Health behaviors, such as getting adequate sleeping, participating in vigorous physical activity, overeating, and smoking, were significantly associated with health outcomes of athlete students. The findings may contribute to the better understanding of health behaviors in athlete students and warrant continued attention on mental health and health habits in this population.

Abstract:This essay presents a refreshing reading of Bertolt Brecht's Stories of Mr. Keuner through the lens of classical Chinese dialectics. Through careful analysis, I uncover not only interesting resonances between Brecht's stories and classical Chinese philosophy but also intriguing dialectic tensions between individual and clusters of stories in the collection, and between Brecht (the man, the artist, and his dramatic oeuvre) and Mr. Keuner (Mr. Nobody), his philosophical alter ego, as the titular character dialogues with his many interlocutors on momentous issues such as knowledge, power, justice, fatherland, and more.

The spread of the COVID-19 virus shows that it is time to re-emphasize the ethical attitude of “awe of others, awe of nature, and awe of life.” It once again reveals the importance of green development. In this study, we introduce awe into the context of COVID-19 and construct an “emotion-motivation-behavior” framework, aiming to explore the relationship between the epidemic and green purchasing behavior from a psychological perspective. Study 1 demonstrates the effect of awe on green purchasing and examines the mediating role of the motivation perspective, to reveal the potential different path. Specifically, prosocial motivation mediates the effect of positive awe evoked by COVID-19 on green purchasing; risk avoidance motivation mediates the effect of negative awe evoked by COVID-19 on green purchasing. Study 2 examined the moderating effect of self-construal. These findings have important management implications for enterprises to correctly use emotional guidance strategies and promote green marketing practices during the COVID-19.