Wikipedia and the politics of mass collaboration

Working together to produce socio-technological objects, based on emergent platforms of economic production, is of great importance in the task of political transformation and the creation of new subjectivities. Increasingly, “collaboration” has become a veritable buzzword used to describe the human associations that create such new media objects. In the language of “Web 2.0”, “participatory culture”, “user-generated content”, “peer production” and the “produser”, first and foremost we are all collaborators. In this paper I investigate recent literature that stresses the collaborative nature of Web 2.0, and in particular, works that address the nascent processes of peer production. I contend that this material positions such projects as what Chantal Mouffe has described as the “post-political”; a fictitious space far divorced from the clamour of the everyday. I analyse one Wikipedia entry to demonstrate the distance between this post-political discourse of collaboration and the realities it describes, and finish by arguing for a more politicised notion of collaboration

Factors Influencing Reinforcement of NR and EPDM Rubbers with Short Aramid Fibers

Among short fiber reinforced composites, those with rubbery matrices have gained great importance due to the advantages they have in processing and low cost, coupled with high strength. These composites combine the elastic behavior of rubbers with strength and stiffness of fibers. Reinforcement with short fibers offers additional features such as design flexibility, high modulus, tear strength, etc. The degree of reinforcement depends on parameters such as: the nature of the rubber matrix, the type of fibers, the concentration and orientation of fibers, fiber to rubber adhesion (generation of a strong interface), fiber length and aspect ratio of the fibers. In this research aramid fibers have been chosen because of their significantly higher modulus and strength, compared to other commercial fibers. Compounds based on NR and EPDM are prepared. Short aramid fibers with different kinds of surface treatments, standard finish and RFL-coating result in different rubber-fiber interfaces. The reinforcing effect of these short aramid fibers is characterized by mechanical and viscoelastic experiments, and by studying the fracture surfaces with microscopic techniques

The Ah receptor: adaptive metabolism, ligand diversity, and the xenokine model

Author Posting. © American Chemical Society, 2020. This is an open access article published under an ACS AuthorChoice License. The definitive version was published in Chemical Research in Toxicology, 33(4), (2020): 860-879, doi:10.1021/acs.chemrestox.9b00476.The Ah receptor (AHR) has been studied for almost five decades. Yet, we still have many important questions about its role in normal physiology and development. Moreover, we still do not fully understand how this protein mediates the adverse effects of a variety of environmental pollutants, such as the polycyclic aromatic hydrocarbons (PAHs), the chlorinated dibenzo-p-dioxins (“dioxins”), and many polyhalogenated biphenyls. To provide a platform for future research, we provide the historical underpinnings of our current state of knowledge about AHR signal transduction, identify a few areas of needed research, and then develop concepts such as adaptive metabolism, ligand structural diversity, and the importance of proligands in receptor activation. We finish with a discussion of the cognate physiological role of the AHR, our perspective on why this receptor is so highly conserved, and how we might think about its cognate ligands in the future.This review is dedicated in memory of the career of Alan Poland, one of the truly great minds in pharmacology and toxicology. This work was supported by the National Institutes of Health Grants R35-ES028377, T32-ES007015, P30-CA014520, P42-ES007381, and U01-ES1026127, The UW SciMed GRS Program, and The Morgridge Foundation. The authors would like to thank Catherine Stanley of UW Media Solutions for her artwork

Simplified stiffness model for spherical rough contacts

Obtaining a surface with negligible roughness is very expensive, time consuming and unnecessary. The influence of surface roughness on the contact stiffness is of great importance. The extra cost associated with unnecessary surface finish can be limited by eliminating the unnecessary machining operations beyond the required surface finish. In this article, a simplified solution is presented to calculate the stiffness of rough contact between the workpiece and spherical locator; also, the effect of surface roughness on the stiffness and deformation of rough spherical contact is studied for different applied loads to find an ‘economic roughness’ under machining forces

Introduction Principle of Local Culture in College English Teaching: Situation of English Teaching Under the Pattern of Globalization

With the development and strengthening of globalization, China has obtained the advantage position in the world by the rapid development of social economy and culture and the increasing comprehensive national power. As a result, English teaching in colleges and universities is facing the great opportunities and challenges. In the environment of collision and fusion of global culture, guiding and enabling students to spread Chinese culture by a wider and deeper way is an important responsibility for college English education to shoulder. However, the reality shows that there is a deviation or a degree of “aphasia” phenomenon when the college students in our country express the culture of their mother tongue in English. Therefore, in the process of college English teaching it is a need to attach importance to import native culture, which is an important research topic for all the teachers and researchers to finish

Men's doubles professional tennis on hard courts: Game structure and point ending characteristics

Despite the great tradition and importance of the doubles game in professional tennis, no literature has analysed to date the performance of professional players. Therefore, the information on the characteristics of the game, or the tactics related to how the points are won in doubles play is scarce. The objective of this study has been to describe the basic characteristics of the structure of the doubles game, and to establish how the points finish in doubles professional tennis played on hard courts. Thirty-four ATP doubles matches played in 2018 were analysed, which included a total of 40 professional players. As per the game structure, the results showed that, in comparison to the singles matches, the number of points per match, the number of sets per match, the number of points per game, and the number of strokes per point, are lower in the doubles matches. However, the number of games per set is higher in doubles than in singles. Winning shots and winning serves are the most frequent patterns to finish the point in doubles. These data show the great importance of the serve in doubles, as well as the relevance of using offensive tactics

Higher Education- An Economic Outlook

The modern concept of education is rational and scientific in its approach and stresses on the need of education for all. Today education has become one of the basic necessities of human life like food, clothing and shelter. As a result, the number of enrolment has been increasing on one hand and the number of educational institutions has also been increasing on other hand. This is very true in the case of higher education. In fact, higher education has a great economic value in terms of employment and income. In recent times, there has been change in the aspiration of young person i.e., both men and women are in a hurry to finish their studies and start earnings. It means that money making has been the centre of all social, political and economic life. This is possible only through the medium of job and income opportunities oriented higher education. It is seen that people prefer to take up those courses and training which are linked to more and more jobs and income opportunities. Thus, pursuing higher studies for academic purpose is no longer the aim of education in both developed and under developed countries. In fact, the economic importance of higher Education has a great impact on the individual, social and national life. Therefore, education is regarded as an economic goods which satisfies human wants and fulfil the objectives of life. It makes man a social as well as an economic being. An attempt is made in the study to highlights the economic importance of higher education in the post modern society. Keywords:Higher Education, Economic life, Social life, Infrastructur

Investigation to Density and Metallurgical Characteristics of Selective Laser Melted Ti-5Al-5 V-5Mo-3Cr Versus Ti-6Al-4 V

Ti-5Al-5 V-5Mo-3Cr (Ti-5553) is a metastable near beta titanium alloy with excellent fatigue performance and corrosion resistance. Hence, it is of significant importance in several high-performance aerospace applications such as aircraft landing gear components. The selective laser melting (SLM) technique shows great potential compared to subtractive methods in generating complex geometries. However, the poor surface finish of the SLMed Ti-5553 components means that post-machining is required to achieve the desired surface quality and dimensional accuracy. Although there is a profound knowledge about the surface integrity of SLMed α + β Ti alloys (typically Ti-6Al-4 V), there is a lack of understanding regarding the microstructure of internal subsurface layers of SLMed Ti-5553 components. In this paper, experimental studies were performed on SLM of Ti-5553 and Ti-64 to determine the effect of SLM parameters on the surface integrity of SLMed Ti components. The density and subsurface microstructure of printed Ti components were measured and evaluated in relation to the SLM conditions

Tire Tread Reinforcement with Short Aramid Fibers

Tensile testing on short fiber reinforced composites is helping to identify the advantages and disadvantages of different rubber compound

“The Necessary War: Canadians Fighting the Second World War 1939–1943, Volume One (Book Review)” by Tim Cook & “Fight to the Finish: Canadians in the Second World War 1944–1945, Volume Two (Book Review)” by Tim Cook

Review of The Necessary War: Canadians Fighting the Second World War 1939–1943, Volume One & Fight to the Finish: Canadians in the Second World War 1944–1945, Volume Two by Tim Cook