scholarly journals Vibration level induced by the friction of two rough surfaces weakly loaded

2021 ◽  
Vol 263 (5) ◽  
pp. 1261-1266
Author(s):  
Modeste Assemien ◽  
Alain Le Bot

This paper presents an experiment to measure the vibration level generated when a light solid slides over a dry and rough surface. The experimental set-up is based on linear constant motion with speed range from 1 to 1000 mm/sec. The aim is to study the evolution of the vibration level as a function of the sliding speed and the friction area. Measurements show that the vibration level is a logarithmic increasing function of the sliding speed with a transient velocity. It is also observed that two regimes exist for the evolution of vibration level versus apparent contact area. On the one hand the vibration level is proportional to the friction area, but on the other hand this level is constant.

2019 ◽  
pp. 94-114
Author(s):  
Ane Díez ◽  
Zuriñe Gaintza

This study assesses how knowledge about protective behaviours against sexual abuse changes among 6 to 7 year-olds 22 girls and boys, after implementing the programme “Grita muy fuerte" (Shout out loud). The program is developed over 5 weeks in sessions of 60 minutes per week. In order to determine the effect of it, an evaluation is carried out with pre-test and post-test measures included in the program itself. According to the results, on the one hand, all students improve their knowledge of protective behaviours against sexual abuse and, on the other hand, in terms of gender, girls have greater knowledge than boys. It is concluded that the programme is effective in increasing awareness of protective behaviours against sexual abuse and that it is therefore advisable to set up this type of experience as part of the schools' educational project.


Author(s):  
Reinhard Bork ◽  
Renato Mangano

This chapter deals with European cross-border issues concerning groups of companies. This chapter, after outlining the difficulties encountered throughout the world in defining and regulating the group, focuses on the specific policy choices endorsed by the EIR, which clearly does not lay down any form of substantive consolidation. Instead, the EIR, on the one hand, seems to permit the ‘one group—one COMI’ rule, even to a limited extent, and, on the other hand, provides for two different regulatory devices of procedural consolidation, one based on the duties of ‘cooperation and communication’ and the other on a system of ‘coordination’ to be set up between the many proceedings affecting companies belonging to the same group.


Dialogue ◽  
1981 ◽  
Vol 20 (3) ◽  
pp. 496-529 ◽  
Author(s):  
C.A. Hooker

Any theory of reduction that goes only so far as carried in Parts I and II ([165], [166]) does only half the job. Prima facie at least, there are cases of would-be reduction which seem torn between two conflicting intuitions. On the one side there is a strong intuition that reduction is involved, and a strongly retentive reduction at that. On the other side it seems that the concepts at one level cross-classify those at the other level, so that there is no way to identify properties at one level with those at the other. There is evidence to suggest that there will be no unique mental state/neural state association that can be set up, because, e.g., many different parts of the nervous system are all capable of taking over ‘control’ of the one mental function. And it is alleged that infinitely many, worse: indefinitely many, different bio-chemo-physical states could correspond to the economic property ‘has a monetary system of economic exchange’; and similarly for the property ‘has just won a game of tennis’. Yet one doesn't want an economic system or a game of tennis to be some ghostly addition to the actual bio-chemo-physical processes and events involved (cf. Rudner [188]). Similarly one hopes that neurophysiology allied with the rest of natural science will render human experience and behaviour explicable.


1925 ◽  
Vol 18 (2) ◽  
pp. 111-118
Author(s):  
Lewis W. Colwell

The curriculum of the junior high school must be determined on the one hand by the needs of a developing civilization and on the other by the nature and capacities of developing youth. These two criteria of worth are by no means opposed to each other. They constitute no bifurcated demand. They set up no dilemmas. For every child is born into organized society on the one hand and becomes a duly constituted member thereof, while on the other hand he possesses a social nature that fits him into the world's work just in the measure that he finds himself. It is perhaps not far afield to say that all friction due to anti-socialistic tendencies is a maladjustment of individuals who have not discovered what they are good for.


1970 ◽  
Vol 21 (1) ◽  
pp. 11-31 ◽  
Author(s):  
E. O. Blake

In order to understand the crusading movement it has always been necessary to define what was understood by the ‘crusade’ as a religious exercise within the Christian tradition. This attempt to identify the ‘crusade idea’ goes back to the earliest commentators on the First Crusade, but has gained increasing vitality during the last thirty years. It is not a matter of weighing the relative importance of, on the one hand, the religious and, on the other, the secular or political motives, but of describing the content of the nova religio as such. In this sense Erdmann, who first set up the subject as capable of disciplined study, traced the antecedents in socio-religious forms of behaviour without which the Kreuzzugsidee could not have been conceived, regarding it as in its essentials formulated at the launching of the First Crusade, with Jerusalem as only a minor and ancillary target. Alphandéry, to single out another notable contributor to this type of study, diagnosed the dramatic emergence of a distinctive idée de croisade during the very course of the First Crusade, concentrated on the deliverance of the Holy Places, a unique experience never to be wholly repeated. Another notion of the ‘crusade’ was developed by Rousset—an institution de salut with its characteristic ideology, entertained generally during the first half of the twelfth century.5 There are studies also of the ideas associated with crusading in the crusade appeals, preaching, justification and criticism of the twelfth and thirteenth centuries, in the forms of procedure, and in Latin and vernacular poetry.


1986 ◽  
Vol 26 (251) ◽  
pp. 115-124

In January and February, the ICRC reduced, as planned, the level of its relief activities in Ethiopia. This reduction was made possible, on the one hand, by an increase in food supplies for the population in the northern provinces of that country affected by conflict and drought and, on the other, by more intensive activity on the part of other voluntary agencies in the area. While leaving in place the structures which would enable it rapidly to set up a large-scale assistance programme if the need were to appear in a given region, the ICRC has lowered the volume of its general relief distributions. In December 1985, 10,700 tonnes were distributed to 830,000 persons. This was reduced to 5,000 tonnes for 424,300 persons in January, and further to 2,800 tonnes for 181,000 persons in February in the provinces of Eritrea, Tigray, Wollo, Gondar and Hararge. The last three therapeutic feeding centres were closed on 16 January (Wukro), and on 16 and 27 February (Idaga Hamus and Adwa). However, ICRC medical teams continued to monitor the health of the populations living in provinces which were receiving assistance, concentrating their activities on groups of displaced persons in Eritrea (in the region between Keren and Barentu), Tigray (in the region between Aksum and Adwa and the region of Mehony), Wollo (in the region of Sekota) and Hararge (Wobera Woreda; Habro Woreda), all areas with major security problems.


2020 ◽  
pp. 9-20
Author(s):  
José Luis Bárcenas-Puente ◽  
Miguel Ángel Andrade-Oseguera

In simple terms, a shareholder is a person who puts their money at risk by providing it to a business, what we call investment, which, if it generates profits, these are distributed in proportional parts to each partner, called dividends. In this way, the payment of dividends to shareholders represents the fair remuneration to the risk assumed. Dividend income is regulated in the Law on Income Tax and its correlation with the General Law of Commercial Companies, through precise guidelines. However, average business practice does not follow these provisions. Indeed, shareholders have money during the year in amounts on considerable amounts, without following any legal formality; thus facing fiscal and financial consequences. On the one hand, then, there is a reasonable right to remuneration and, on the other hand, compliance with the law. That is why alternatives to the old problem, of the checks without verification, set up as fictitious dividends.


2015 ◽  
Vol 3 (1) ◽  
pp. 67-89

The dual aim of this article is, on the one hand, to identify Bessarabian writers’ individual and group rationale to stay in the territory occupied by the Soviet authorities after 28 June 1940 and, on the other hand, to analyse the institutional mechanisms set up by the Soviet authorities (namely the Moldovan Writers Union (MWU) and AgitProp) to integrate these writers into the Soviet cultural system. The three groups of Bessarabian writers remaining in the annexed territory (the ‘regionalists’ from Viaţa Basarabiei journal, the writers of Jewish origin and the formerly ‘underground’ (pro-Communist) activists) intersected and overlapped, since the writers’ interests were often multiple. At the same time, the strategies implemented by the Soviet authorities to enrol Bessarabian writers into the Soviet institutional structures followed a binary and apparently contradictory rationale, of inclusion (of candidates deemed suitable for the aspiring status) and exclusion (of those who did not correspond to the criteria of political probity).


2015 ◽  
Vol 65 (2) ◽  
pp. 773-787 ◽  
Author(s):  
Tom Geue
Keyword(s):  
Set Up ◽  

Juvenal's third satire is a privileged piece of verbal diarrhoea. As the longest satire in Juvenal's well-attended Book 1, as the centre of this book, and as the one Juvenalian jewel that sparkles ‘non-rhetorically’, it has always been the critics’ darling. Its protagonist, on the other hand, has not always been so popular. Recently, reader sympathy for old Umbricius (the poem's main speaker) has shifted to laughter in his face; the old sense of ‘pathetic’ has ceded to the new. One of the central strategies of the ‘Umbricius-as-caricature’ camp has been to point to the overtime worked by ‘mock-epic’ in this poem: Umbricius self-inflates to become another Aeneas, fleeing a crumbling Troy (Rome). But an oppositio is wedged in imitando. Umbricius makes his lengthy verbal preparations to depart from Rome for Cumae; Aeneas had come to Rome through Cumae. Umbricius withdraws to set up shop in the meagre countryside; Aeneas had escaped to cap his exile teleologically with the (pre-foundation of the) Greatest City That Will Ever Be. Still, Virgil's paradigm tale of displacement, drift and re-establishment underlies Umbricius' self-definition as an exile. Indeed exile, with a large and ever-increasing stock of mythical and historical examples, was a situation ripe for self-mythologizing. Umbricius stands in Aeneas' shadow then, standing it on its head. His recession also makes him into a Iustitia/Dikē figure, the final trace of the golden age, off to alloy himself elsewhere. In his mind, exile is rationalized by distinguished past examples; in ours, we laugh at how disparate example and man really are. That side of Umbricius has been done to death; or at least, for present purposes, to exile.


2014 ◽  
Vol 599-601 ◽  
pp. 1807-1811
Author(s):  
Zhi Qiang He ◽  
Dong Xia Meng ◽  
Xiu Ming Zhao

Currently, many universities have set up their own system for providing employment information service, problems that following the independently operating and maintaining modes are: on the one hand, employers have to register a number of university employment information system to obtain information on a number of graduates; on the other hand, graduates also need to browse a number of university employment information site to get more information on business recruitment, which severely reduces the transparency and efficiency of information data queries. To solve the above problems, this paper propose the university employment information integration model on the basis of distributed storage and computing technology, which realizes the integration of multiple heterogeneous employment information database.


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