White LEDs, which have been widely used in the urban street lighting, are increasingly applied to replace traditional HPS lamps with a lower CCT. Generally, studies on the CCT of street lighting focus on providing safe functional lighting for vehicle drivers. However, it is still unknown how the street light color can affect pedestrians’ perception and preferences with respect to lighting levels and ambient temperature.In this study, a wide range of CCTs was measured for urban street lighting in Beijing, China, (...) for example. And the transition from traditional HPS lamps to LEDs lacks a reference street lighting standard for CCT. The study aims to conduct a cross-sensory test to evaluate urban street lighting with multiple combinations of CCT values and illuminance levels according to pedestrians’ visual perception and psychological preferences.A total of 18 night street lighting scenes with six CCT values and three illuminance levels were first selected in Beijing city, and then HDR videos of these scenes were taken from the view of pedestrians to conduct psychological experiments in an indoor environment with three ambient temperatures. A total of 77 university students were invited to assess videos of the 18 lighting scenes in terms of seven factors, such as lighting brightness, color temperature sensation, light color preference, sense of safety, recognition, comfort, and overall preference. Several key findings were achieved as follows. The CCT of urban street lighting can have significant effects on the visual psychological perceptions of participants. There was a significant interaction between CCT, illuminance, and ambient temperature on the visual psychological performances of participants. The higher ambient temperature will deliver the higher level of overall preference for the street lighting with medium and high CCT, and the perception of warmer light color. There was a strong correlation found between participants’ light color preference, comfort, and overall preferences. (shrink)

Housed in one volume for the first time are several of the seminal essays on Du Bois's contributions to sociology and critical social theory: from DuBois as inventor of the sociology of race to Du Bois as the first sociologist of American religion; from Du Bois as a pioneer of urban and rural sociology to Du Bois as innovator of the sociology of gender and culture; and finally from Du Bois as groundbreaking sociologist of education and cultural criminologist to Du (...) Bois as critic of the disciplinary decadence of the discipline of sociology. Unlike any other anthology or critical reader on Du Bois, this new volume offers an excellent overview of the critical commentary on arguably one of the most imaginative and innovative, perceptive and prolific founders of the discipline of sociology. (shrink)

'The problem of the twentieth-century is the problem of the color-line.' Originally published in 1903, The Souls of Black Folk is a classic study of race, culture, and education at the turn of the twentieth century. With its singular combination of essays, memoir, and fiction, this book vaulted W. E. B. Du Bois to the forefront of American political commentary and civil rights activism. The Souls of Black Folk is an impassioned, at times searing account of the situation of African (...) Americans in the United States. Du Bois makes a forceful case for the access of African Americans to higher education, memorably extols the achievements of black culture (above all the spirituals or 'sorrow songs'), and advances the provocative and influential argument that due to the inequalities and pressures of the 'race problem', African American identity is characterized by 'double consciousness'. This edition includes a valuable appendix of other writing by Du Bois, which sheds light on his attitudes and intentions. ABOUT THE SERIES: For over 100 years Oxford World's Classics has made available the widest range of literature from around the globe. Each affordable volume reflects Oxford's commitment to scholarship, providing the most accurate text plus a wealth of other valuable features, including expert introductions by leading authorities, helpful notes to clarify the text, up-to-date bibliographies for further study, and much more. (shrink)

A fuzzy predictive fault-tolerant control scheme is proposed for a wide class of discrete-time nonlinear systems with uncertainties, interval time-varying delays, and partial actuator failures as well as unknown disturbances, in which the main opinions focus on the relevant theory of FPFTC based on Takagi-Sugeno fuzzy model description of these systems. The T-S fuzzy model represents the discrete-time nonlinear system in the form of the discrete uncertain time-varying delay state space, which is firstly constructed by a set of local linear (...) models and the nonlinear membership functions. The novel improved state space model can be further obtained by extending the output tracking error to the constructed model. Then the fuzzy predictive fault-tolerant control law based on this extended model is designed, which can increase more control degrees of freedom. Utilizing Lyapunov-Krasovskill theory, less conservative delay-range-dependent stable conditions in terms of linear matrix inequality constraints are given to ensure the asymptotically robust stability of closed-loop system. Meanwhile, the optimized cost function and H-infinity performance index are introduced to the stable conditions to guarantee the robust performance and antidisturbance capability. The simulation results on the temperature control of a strong nonlinear continuous stirred tank reactor show that the proposed control scheme is feasible and effective. (shrink)

A moving cultural biography of abolitionist martyr John Brown, by one of the most important African-American intellectuals of the twentieth century. In the history of slavery and its legacy, John Brown looms large as a hero whose deeds partly precipitated the Civil War. As Frederick Douglass wrote: "When John Brown stretched forth his arm... the clash of arms was at hand." DuBois's biography brings Brown stirringly to life and is a neglected classic.

Le but du présent article est d’examiner les relations entre les notions d’action et de subjectivité. Faut-il mettre ces relations au compte d’une expérience de l’action? Une telle hypothèse permet, à première vue, de distinguer ce qui nous arrive ou encore ce qui procède d’une simple réaction à une stimulation, d’une part, des actions que nous initions et dont nous sommes réellement les agents d’autre part. Mais cette vue, si elle a l’intérêt de faire entrer en scène le sujet sous (...) les trait... (shrink)

The distinguished American civil rights leader, W. E. B. Du Bois first published these fiery essays, sketches, and poems individually nearly 80 years ago in the Atlantic, the Journal of Race Development, and other periodicals. This volume has long inspired readers with its militant cry for social, political, and economic reforms for black Americans.

Jessica du Toit wonders if our relationship with our pets can be morally defended.

Les sages-femmes en France incarnent une subtile synthèse du cure et du care, entretenant une ambiguïté qui fonde une partie de leur identité professionnelle et qui brouille les pistes des stéréotypes de genre. En fonction du contexte social et politique qui conditionne leur mode d’exercice, ces professionnel.le.s développent spontanément des stratégies pour équilibrer les tensions qui existent entre ces deux pôles. Elles/ils vont ainsi promouvoir tantôt leurs compétences dans le care comme valeur ajoutée par rapport aux autres acteurs médicaux, tantôt (...) leur expertise médico-technique et leur autonomie de pratique, affirmant ainsi leur appartenance au monde médical et scientifique. Cet article s’inscrit dans une double approche d’analyse en sciences sociales et d’expérience professionnelle de trente années en tant que sage-femme. (shrink)

This chapter presents an essay by W. E. B. Du Bois that deals with the issue of race. He raises questions such as: What is the real meaning of race. What has, in the past, been the law of race development? What lessons has the past history of race development to teach the rising Negro people? He describes the American Negro Academy, which aims at once to be the epitome and expression of the intellect of the black-blooded people of America, (...) the exponent of the race ideals of one of the world's great races. He concludes by outlining a proposed creed for the Academy. (shrink)

-Fabrice Luchini, vous lisez l'Evangile de saint Marc? - Pas encore. Avant de plonger dans les Evangiles, je lis Pierre Boutang. C'est du lourd?! Hier soir, je dînais avec François Hollande qui me dit? : "?Vous lisez Boutang?? C'est la passion de mon père?!?" Je lui réponds? : "?Transmettez mon salut admiratif à votre père car un lecteur de Boutang, c'est un costaud.?" Je suis paumé... - Qu'est-ce qui vous attire chez Boutang?? - Le poison de la curiosité. Pourquoi suis-je (...) ainsi happé?? C'est d'un tel niveau philosophique que je n'ai pas les moyens de suivre. Pourtant j'y vais. Autant Nietzsche, je peux facilement m'y mettre, car c'est un styliste poète, autant ces philosophes qui mettent Kant en allemand face à Thomas d'Aquin en latin... je ne fais pas le poids?! (Fabrice Luchini interrogé par Luc Adrian pour Famille chrétienne, le 10 mai 2016.) Ce livre est un manuel pour commencer à lire Boutang, le philosophe français le plus nécessaire et le plus libre du siècle. " Méthode d'investigation sans concession ", " classique modernité ", " courage " sont les mots par lesquels Pierre Boutang rendait compte des tout premiers travaux de son élève en Sorbonne : " Nous sommes ici en présence du véritable commencement d'une oeuvre ". (shrink)

"El libro que publicamos hoy no tiene otro fin que servir de guía a los espíritus deseosos de profundizar los problemas generales del Derecho; es una “Introducción” en el sentido más exacto del término. Se trata de orientar progresivamente al lector partiendo de las realidades más simples para llevarlo después hasta los problemas más abstractos. Hemos renunciado deliberadamente a dar a los primeros capítulos un rigor científico. Igualmente, hemos evitado de pronto los términos técnicos, esforzándonos por explicarlos y hacerlos asimilar (...) gradualmente en el curso de la obra". Claude Du Pasquier. (shrink)

Le but de cet article est d'examiner le rôle de l'analogie du calcul dans la philosophie du langage de Wittgenstein pendant les périodes intermédiaires et finales. Ce rôle a changé parce que Wittgenstein est passé d'une interprétation stricte à une interprétation large de cette analogie. L'analogie revêt un sens large dès lors que l'on admet que le langage peut être comparé à un calcul d'une multitude de manières et pour une multitude de raisons différentes. Le trait commun aux deux interprétations (...) consiste en leur ambition d'éradiquer un mentalisme conduisant à prendre la pensée et la compréhension pour des processus et des états se produisant dans l'esprit du locuteur, mais Wittgenstein a progressivement découvert qu'une lecture stricte de l'analogie induisait une représentation fausse du rôle des règles dans le langage. (shrink)

In this article, the co-editors of the corporate responsibility: quantitative issues section of the journal provide an overview of the quantitative CSR field and offer some new perspectives on where the field is going. They highlight key issues in developing impactful, theory-driven, and ethically grounded research and call for research that examines complex problems facing businesses and the society (e.g., big data and artificial intelligence, political polarization, and the role of CSR in generating social impact). By examining topics that are (...) under-researched, forward-looking, and socially oriented, scholars can expand the boundary of CSR’s substantive domain and produce research that helps businesses act in a long-term, socially responsible way in this quickly evolving, turbulent environment. They also discuss ways to enhance the methodological rigor of quantitative CSR research and encourage scholars to employ cutting-edge, innovative methods to shed light on the micro-level mechanisms of CSR and reveal patterns and relationships hidden in unstructured big data. (shrink)