scholarly journals AUTOMOBILE WITH PNEUMATIC ENGINE

Author(s):  
Marcinko Peter ◽  
Palko Maroš ◽  
Hajduk Mikuláš

Urgency of the research. In the modern times, more often, there are alternatives to the drive, which help the environment. First of all, there are many engine alternatives, but also hybrids with low emissions. Target setting. The main goal was to design a vehicle that powered by compressed air. Then take the vehicle to competition. For one pressure cylinder, this vehicle get over a longer track and the other category reached a higher speed. Actual scientific researches and issues analysis. In the past few years were realized ten Aventics pneumobil competitions. That year was the eleventh grade of this pneumatic competition. This vehicle ran for the first ride in all categories. There are many publishers in the field of pneumatics systems. The issue of pneumatic motors is new in Slovakia, since it is one of the first pneumatic driven vehicles. Uninvestigated parts of general matters defining. This article focuses on analysis of the proposed of pneumatic driven vehicle and few parts of this vehicle. The research objective. The aim of the research was to design and assembly a compressed air-powered car that was supposed to attend in competition of pneumobil. The statement of basic materials. The analysis consists of basic information about competition, by Aventics. The definition of the vehicle is described below. Based on this knowledge, the 3D model and frame of the vehicle are further developed. MKP-FEA simulations were performed on this frame. Basic information and parts of the pneumatic engine have been provided. Conclusions. This article describes the design, simulations, parameters and basic parts of a pneumatically-powered vehicle. The design of a pneumatic driven vehicle is based on the rules by Aventics. Based on these rules, the development of this vehicle was realized. The next step was to analyse the frame that protect pilot in the event. One of the simulation was described and explained. Some of the basics were also described. The result of this student project is a vehicle that took place in the Hun-garian town of Eger. The vehicle ran in each of category. There were a total of 51 teams from all over the world. Only 34 teams completed the technical inspection. In the “long distance” category finished in 15th place.

2021 ◽  
Vol 50 (1) ◽  
Author(s):  
Andrew K. Scherer

The mid-1990s through the first decade of the new millennium marked an increase in publications pertaining to war and violence in the ancient past. This review considers how scholars of the past decade have responded to that work. The emerging consensus is that war and violence were endemic to all societies studied by archaeologists, and yet the frequency, intensity, causes, and consequences of violence were highly variable for reasons that defy simplistic explanation. The general trend has been toward archaeologies of war and violence that focus on understanding the nuances of particular places and historical moments. Nevertheless, archaeologists continue to grapple with grand narratives of war, such as the proposition that violence has decreased from ancient to modern times and the role of war and violence in state formation and collapse. Recent research also draws attention to a more expansive definition of violence. Expected final online publication date for the Annual Review of Anthropology, Volume 50 is October 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.


2021 ◽  
Vol 21 ◽  
pp. 143-162
Author(s):  
Jiaofeng HUANG

"Jesus-Mozi Dialogue" is an underflow in the revival of Mohism in the Republic of China. Since modern times, the intellectual circles have mostly taken Christianity as the "rational model" of Mohism. When it comes to the best reference for Christianity in traditional Chinese culture, Mohism is always used as an example, which has been discussed in the field of Mohism research. However, in the past, people still paid little attention to the church's view of the "Jesus-Mozi Dialogue" between Mohist School and Chinese Christians, which is a pity. This article attempts to discuss the various viewpoints of Zhang Yijing, Wang Zhixin, and Wu Leichuan on Mohism and "Mohist religion" as examples, and looks forward to giving a clear definition of the literature and the division of school attribution to the results of the "Jesus-Mozi Dialogue".


2020 ◽  
pp. 26-32
Author(s):  
Yael Tamir

This chapter argues that nationalism is a deceptive ideology; one of its faces looks to the past, the other looks to the future. It discusses the negative descriptions of nationalism that emphasize its backward-looking face. The chapter also explains how nationalism tried to revive (or invent) an image of a magnificent past. It examines the history of nationalism, and one of its most fascinating features, modernizing powers. Despite the common perception of nationalism as identified with primordial, tribal feelings, the chapter asserts that true power of nationalism in modern times is grounded in its ability to promote processes of modernization and industrialization that go hand in hand with the universalization of education, information, and technology. Ultimately, the chapter portrays nationalism as an expression of a populist state of mind. It further presents the most interesting definition of populism.


Author(s):  
Sofia Celli ◽  
Federica Ottoni

Proceeding under the assumption that restorers need to become more involved in the definition of the most advanced management tools for historic buildings, this paper aims to offer a contribution to the “informative” feature of the H-BIM methodology. Indeed, over the past few years, the issues addressed by scholars mostly concerned surveying and modelling techniques, whereas the organization of external data within the virtual model has rarely been considered. The necessity of defining a new operative tool for the maintenance of the wooden chain encircling the dome of Santa Maria del Fiore represented an occasion to develop an informative model that attempts to confer centrality to the knowledge processas a whole. Attention was thus focused on the articulation of the informative apparatus to be associated to the 3D model, as well as to its practical implications in terms of conservation.


Author(s):  
Peter Marcinko ◽  
Mikulas Hajduk ◽  
Martin Kočan

Urgency of the research. Interest in this topic is aroused, because mechanical vibration may damage the machinery or parts of machine. Therefore, it is appropriate to design systems that detect problems. Also these systems can help in the timely replacement of the worn part. Target setting. The main goal is to design a system that can detect in a timely manner a problem that could destroy the device. It is therefore necessary to design systems that can record this. Actual scientific researches and issues analysis. In recent years, there has been an increase in demand for equipment that can detect a timely problem. Many such devices already exist and are still being upgraded. This industry is called vibrodiagnostics. Uninvestigated parts of general matters defining. This paper is focused on the analysis of mechanical systems and the creation of a measuring chain. The research objective. The aim of this research is to analyse the mechanical systems and the assembly of the measuring chain. The functionality of the device can be verified on this measuring chain. Whether or not it is suitable for operation. In the future these systems will be upgraded with software that better records the vibrations. The statement of basic materials. The analysis consists of basic information about mechanical systems and sensors. The definition of this problem is described below. Based on this knowledge of mechanical systems, a measurement chain was designed. Conclusions. Our vision is to implement knowledge of mechanical systems not only on a simple fan stator. Problems of vibrodiagnostics are still progressing and increasingly in technical practice. We would continue to do more testing on more complex devices.


Author(s):  
K. T. Tokuyasu

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).


Derrida Today ◽  
2013 ◽  
Vol 6 (1) ◽  
pp. 97-114 ◽  
Author(s):  
Christopher Morris

Over the past thirty years, academic debate over pornography in the discourses of feminism and cultural studies has foundered on questions of the performative and of the word's definition. In the polylogue of Droit de regards, pornography is defined as la mise en vente that is taking place in the act of exegesis in progress. (Wills's idiomatic English translation includes an ‘it’ that is absent in the French original). The definition in Droit de regards alludes to the word's etymology (writing by or about prostitutes) but leaves the referent of the ‘sale’ suspended. Pornography as la mise en vente boldly restates the necessary iterability of the sign and anticipates two of Derrida's late arguments: that there is no ‘the’ body and that performatives may be powerless. Deriving a definition of pornography from a truncated etymology exemplifies the prosthesis of origin and challenges other critical discourses to explain how pornography can be understood as anything more than ‘putting (it) up for sale’.


Author(s):  
Volker Scheid

This chapter explores the articulations that have emerged over the last half century between various types of holism, Chinese medicine and systems biology. Given the discipline’s historical attachments to a definition of ‘medicine’ that rather narrowly refers to biomedicine as developed in Europe and the US from the eighteenth century onwards, the medical humanities are not the most obvious starting point for such an inquiry. At the same time, they do offer one advantage over neighbouring disciplines like medical history, anthropology or science and technology studies for someone like myself, a clinician as well as a historian and anthropologist: their strong commitment to the objective of facilitating better medical practice. This promise furthermore links to the wider project of critique, which, in Max Horkheimer’s definition of the term, aims at change and emancipation in order ‘to liberate human beings from the circumstances that enslave them’. If we take the critical medical humanities as explicitly affirming this shared objective and responsibility, extending the discipline’s traditional gaze is not a burden but becomes, in fact, an obligation.


Moreana ◽  
2009 ◽  
Vol 46 (Number 176) (1) ◽  
pp. 175-190
Author(s):  
Bernard Bourdin

The legacy from Christianity unquestionably lies at the root of Europe, even if not exclusively. It has taken many aspects from the Middle Ages to modern times. If the Christian heritage is diversely understood and accepted within the European Union, the reason is essentially due to its political and religious significance. However, its impact in politics and religion has often been far from negative, if we will consider what secular societies have derived from Christianity: human rights, for example, and a religious affiliation which has been part and parcel of national identity. The Christian legacy has to be acknowledged through a critical analysis which does not deny the truth of the past but should support a European project built around common values.


2012 ◽  
Vol 28 (2) ◽  
pp. 233-263 ◽  
Author(s):  
Ian Reader

Concerns that established temple Buddhism in Japan is in a state of crisis have been voiced by priests in various sectarian organizations in recent years. This article shows that there is a very real crisis facing Buddhism in modern Japan, with temples closing because of a lack of support and of priests to run them, and with a general turn away from Buddhism among the Japanese population. In rural areas falling populations have led to many temple closures, while in the modern cities people are increasingly turning away from the prime area in which Japanese people have traditionally engaged with Buddhist temples — the processes of death and their aftermath. Partly this is due to competition from new secular funeral industries, but partly also it is because public perceptions of Buddhism — which has become over-reliant on death rituals in Japan — have become highly negative in modern times. Even practices which have often been seen as areas in which Buddhist temples have been able to attract people — such as pilgrimages — are proving less successful than in the past, contributing further to a sense of crisis that threatens to undermine Buddhism’s roots in Japan.


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