Vehicular ad hoc network is a multihop mobile wireless communication network that can realize many vehicle-related applications through multitop communication. In the open wireless communication environment, security and privacy protection are important contents of VANET research. The most basic method of VANET privacy protection is anonymous authentication. Even through, there are many existing schemes to provide anonymous authentication for VANETs. Many existing schemes suffer from high computational cost by using bilinear pairing operation or need the assistance of the trust authorities (...) during the authentication process or rely on an ideal tamper-proof device, which requires very strong security assumption. In this study, an anonymous authentication and key negotiation scheme by using private key and group key is proposed, which is based on pseudonym using the nonsingular elliptic curve. In this scheme, there is no third party trust center to participate in the authentication, there is no need to query the database, and there is no need of the local database to save the identity information of many vehicles, which reduce the storage space and the authentication time compared with other schemes. The proposed scheme only needs realistic TPDs. In the proposed scheme, TPDs do not need to preinstall the system key as many other schemes do; hence, the failure of a single TPD does not affect the security of the entire system. The security of the scheme is proved under the random oracle model. Compared with the related schemes using bilinear pairings, the computational cost and communication cost of the proposed scheme are reduced by 82% and 50%, respectively. (shrink)

The adaptation aftereffect plays a critical role in human development and survival. Existing studies have found that, compared with general individuals, individuals with learning disability, autism and dyslexia show a smaller amount of non-affective-based cognitive adaptation aftereffect. Nevertheless, it is unclear whether individuals with depression or depression tendency show similar phenomenon in the adaptation aftereffect, and whether such depression tendency occurs in the non-affective-based cognitive or emotional adaptation aftereffect. To address this question, the present study conducted two experiments. Experiments 1A (...) and 1B used the emotional facial expression adaptation paradigm to examine whether Chinese participants showed the emotional adaptation aftereffect and whether the emotional adaptation aftereffect was influenced by physical features of faces, respectively. Experiment 2 recruited two groups of participants, with high and low depression, respectively, to examine whether they showed differences in the emotional or cognitive adaptation aftereffect. Results showed that Chinese participants showed the typical emotional adaptation aftereffect, which was not influenced by physical features of faces. More importantly, compared to the low-depression group, the high-depression group showed a smaller emotional adaptation aftereffect, but the two groups showed a similar cognitive adaptation aftereffect. These results suggest that level of depressive symptoms is associated with the emotional adaptation aftereffect. (shrink)

美學大師蔣勳用文字，在時間裡的俯仰自得，找回東方最美的事物 東方美學即將再崛起，我們都要重新做好東方的文化功課 ★藝術、自然、摯友，蔣勳談東方美學，談美麗心事 ★精采收錄蔣勳水墨油畫創作，以及東方經典美術作品 ★天地、隔水、錦眉、畫心，裝幀再現長卷的荒涼與繁華 東方美學其實是生命的領悟， 領悟能夠永續，才是來日方長，領悟能夠傳承，才是天長地久。 東方美學是在漫長的歲月裡領悟了時間的意義， 領悟了生命是一個圓，周而復始。 ——蔣勳 他在文人山水畫思考時間的過去與未來，他在古典詩詞中找回不遙遠的傳唱歌聲，他在蟲痕鳥跡獸足之中看到天地大美，他在縱谷春秋之中聆聽長卷跋尾餘音裊裊。美學大師蔣勳重新思考東方美學的特殊意義，在連續不斷的心的 收藏印記中，回歸自然、溫文爾雅，在可有也可無之間，綻放最美麗的光亮。 留白、長卷、水墨、跋尾等東方美學元素，在這個全球化的時代靈光乍現，卻也內斂含蓄。也許是時候回頭省思屬於這個時代的東方美學。東方美學若要重新崛起，我們都應該從頭開始，重新做好自己的功課，迎接屬於東方的文 藝復興。.

ArgumentThis article documents the reasoning in a mathematical work by Mei Wending, one of the most prolific mathematicians in seventeenth-century China. Based on an analysis of the mathematical content, we present Mei’s systematic treatment of this particular genre of problems,fangcheng, and his efforts to refute the traditional practices in works that appeared earlier. His arguments were supported by the epistemological values he utilized to establish his system and refute the flaws in the traditional approaches. Moreover, in the context of the (...) competition between the Chinese and Western approaches to mathematics, Mei was motivated to demonstrate that the genre offangchengproblems was purely a “Chinese” achievement, not discussed by the Jesuits. Mei’s motivations were mostly expressed primarily in the prefaces to his works, in his correspondence with other scholars, in synopses of his poems, and in biographical records of some of his contemporaries. (shrink)

本书介绍了中国历代美学家60余人,分别介绍了他们的生平事迹、代表作品、主要美学观点。.

本书共11章,论述了青年审美的地位和作用、历史回顾与未来展望、本质特点、原则和标准、组织与引导,商品经济与青年审美,中外青年审美观的异同比较等问题。.

本书包括:生平与著述;卢卡奇的马克思主义;以批判为已任的美学观;余音绕梁等内容。.

Ben shu cai yong " fan shi " fang shi jie shao le yin le mei xue zai xi fang zhi jin suo fa sheng guo de zhu yao wen ti.

本书内容包括:“美在关系”说、审美知觉、审美情感、审美想象、当代中国文化——在民族性与开放性之间等。.

全书十五讲，包括：游鱼之乐、不二法门、逝者如斯、骚人遗韵、气化宇宙、落花无言、灵的空间、四时之外、以小见大、大巧若拙、华严境界、饮之太和、妙悟玄门、形神之间、颐养情性。.

Mei di li cheng -- Huaxia mei xue -- Mei xue si jiang.

Authoritarian leadership is of great significance to eastern countries, including China. Meanwhile, unethical employee behavior also exists in all types of social organizations. The relationship between authoritarian leadership and unethical employee behavior is worth studying. Senior leaders often do not have a direct influence on employees except for through their immediate supervisors. The leadership style of senior leaders also influences the leadership style of their subordinates. This paper studies how authoritarian manager leadership trickles down to unethical employee behavior through authoritarian (...) supervisor leadership and discusses the moderating effect of leader member exchange and an ethical climate. Through a questionnaire survey of 406 pairs of leaders, supervisors, and employees, the research results of the multilevel model show that authoritarian supervisor leadership is positively related to unethical employee behavior, authoritarian supervisor leadership mediates the relationship between authoritarian manager leadership and unethical employee behavior, LMX positively moderates the relationship between authoritarian manager leadership and authoritarian supervisor leadership and moderates the mediating effect of authoritarian supervisor leadership, and, that an ethical climate negatively moderates the relationship between authoritarian supervisor leadership and unethical employee behavior and moderates the mediating effect of authoritarian supervisor leadership. (shrink)

Many healthcare goods, such as surgical instruments, textiles and gloves, are manufactured in unregulated factories and sweatshops where, amongst other labour rights violations, workers are subject to considerable occupational health risks. In this paper we undertake an ethical analysis of the supply of sweatshop-produced surgical goods to healthcare providers, with a specific focus on the National Health Service of the United Kingdom. We contend that while labour abuses and occupational health deficiencies are morally unacceptable in the production of any commodity, (...) an additional wrong is incurred when the health of certain populations is secured in ways that endanger the health and well-being of people working and living elsewhere. While some measures have been taken to better regulate the supply chain to healthcare providers in the UK, further action is needed to ensure that surgical goods are sourced from suppliers who protect the labour and occupational health rights of their workers. (shrink)

Objectives Older adults are considered one of the most vulnerable groups to COVID-19. However, previous studies on emotion and aging have found that older adults report better well-being than younger adults in global survey and daily report. To better understand older adults’ well-being during the COVID-19 outbreak, we examined age differences in daily affective experiences in this study. Method Two hundred and thirty-one participants from mainland China aged 18 to 85 were recruited to participate in the 14-day daily diary study, (...) after a pretest. Their trait affect and demographic information were measured in the pretest. Their daily affect and stress levels were measured in the daily assessments. Results We found that older adults reported lower perceived stress related to COVID-19 in daily life, compared to younger adults. The negative relationship between daily perceived stress and high arousal positive affect and the positive relationship between daily perceived stress and high arousal negative affect was weaker in older than younger adults. Discussion These results provide initial evidence of daily affective well-being across different age groups in adulthood during the COVID-19 outbreak. Such information is important for developing interventions to promote better well-being during the COVID-19 outbreak. (shrink)

La philosophie contemporaine et la phénoménologie du corps, en visant à rendre le corps plus multiple, plus habité par l'altérité y compris technique (J. Derrida, J.-L. Nancy), ont fait évoluer profondément le problème du lien entre "l'âme" et le corps ; et cela au-delà des contours de la problématique marquée par les recherches cognitives du XXe siècle, qui ont pourtant donné une accélération remarquable à l'étude des rapports entre le cerveau et la machine corporelle. Ces perspectives ont introduit dans le (...) cadre de l'ancien débat, d'origine cartésienne, des variantes liées surtout à l'art, l'écriture et la pensée environnementale. L'Orient et l'Occident se retrouvent ainsi confrontés à un corps aux multiples "décors", qui le spécifient, l'entourent, l'enrichissent, etc. Le Mind Body Problem d'ordre simplement épistémologique, suivant la tradition jusqu'à la seconde moitié du siècle dernier, s'est changé en problème culturel, cognitif, écologique qui récupère de façon critique la notion générale de "vie", de "contexte phénoménologique de vie", d'existence également. Ce volume, issu d'un Colloque organisé par le Collège International de Philosophie, a voulu reconsidérer les tenants et aboutissants de ce changement, pour le développement d'une perspective de philosophie du corps impliquant une multitude d'intersections trans-et multidisciplinaires et trans- et multiculturelles : entre esthétique, arts du spectacle, phénoménologie, écologie, histoire de l'art et de la pensée de l'art, pensée orientale, nouvelles sciences cognitives, Cultural Studies. (shrink)