Rolling with and without Slipping during Orthocycloids Generation

2018 ◽  
Vol 880 ◽  
pp. 69-74
Author(s):  
Iulian Popescu ◽  
Alina Elena Romanescu ◽  
Ludmila Sass
Keyword(s):  
Plane Curve ◽  
Lubricant Layer ◽  
Classical Form ◽  
Original Idea ◽  
Rolling Without Slipping

The orthocycloid represents a plane curve generated by a point belonging to a circle which is rolling without slipping along a line. Our original idea (not approached in the specialty literature) is to consider the rolling with slipping of a wheel on a rail, instead of the rolling of the gear “gearwheel –rack” as in the case of the orthocycloid generation. In this case the length of the arc considered on the circle is no longer equal to the segment from the line supporting the rolling. The tracer point belonging to the wheel will generate other curves but orthocycloids. Various curves were obtained. Analyses were made considering the braking due to the friction between the rolling surfaces and respectively the case when the lubricant layer generates a “skating like” rolling. The yielded curves start from the classical form of the orthocycloid and afterward are distorted exhibiting an increased number of loops. Some curves are similar to elongated orthocycloids, obtained in different conditions. The curves resulted from rolling by slipping can be used in various domains.

Rolling with and without Slipping, during Epicycloids Generation

2018 ◽  
Vol 880 ◽  
pp. 63-68
Author(s):  
Iulian Popescu ◽  
Ludmila Sass ◽  
Alina Elena Romanescu
Keyword(s):  
Planetary Gear ◽  
Lubricant Layer ◽  
Smooth Surfaces ◽  
Original Idea ◽  
Starting Point ◽  
Rolling Without Slipping ◽  
Significant Class

The starting point consists in the modality to generate epicycloids when two external circles are considered. The mobile circle is rolling on the fix circle without slipping, such as two arcs belonging to these circles are equal. The specialty literature presents an example with a simple planetary gear in which the “satellite porting” arm provides the rolling of the mobile circle on the fix circle. Our original idea, not approached in the specialty literature, considers the rolling with slipping of the mobile circle on the fix circle. Instead of the gears providing the rolling without slipping, two wheels with smooth surfaces are used now. The case when the two involved arc are no longer equal is analysed. Between them appear either frictions generating braking or “skating like” rolling when the lubricant layer is too thick. An analysis of the theoretical case when the slipping has a sense opposite to that of a normal rolling is also performer. A significant class of curves was obtained. Some are even epicycloids obtained with slipping, with other parameters.

Large-Scale Rhythm and Classical Form

1990 ◽  
Vol 12 (2) ◽  
pp. 236-246
Author(s):  
David H. Smyth
Keyword(s):  
Large Scale ◽  
Classical Form

Zeitstrukturen im Jazz

2014 ◽  
Vol 59 (1) ◽  
pp. 79-92
Author(s):  
Alexander Becker
Keyword(s):  
Large Scale ◽  
Large Scale Structure ◽  
Time Frame ◽  
Scale Structure ◽  
Classical Form ◽  
Jazz Music ◽  
The Moment

Wie erlebt der Hörer Jazz? Bei dieser Frage geht es unter anderem um die Art und Weise, wie Jazz die Zeit des Hörens gestaltet. Ein an klassischer Musik geschultes Ohr erwartet von musikalischer Zeitgestaltung, den zeitlichen Rahmen, der durch Anfang und Ende gesetzt ist, von innen heraus zu strukturieren und neu zu konstituieren. Doch das ist keine Erwartung, die dem Jazz gerecht wird. Im Jazz wird der Moment nicht im Hinblick auf ein Ziel gestaltet, das von einer übergeordneten Struktur bereitgestellt wird, sondern so, dass er den Bewegungsimpuls zum nächsten Moment weiterträgt. Wie wirkt sich dieses Prinzip der Zeitgestaltung auf die musikalische Form im Großen aus? Der Aufsatz untersucht diese Frage anhand von Beispielen, an denen sich der Weg der Transformation von einer klassischen zu einer dem Jazz angemessenen Form gut nachverfolgen lässt.<br><br>How do listeners experience Jazz? This is a question also about how Jazz music organizes the listening time. A classically educated listener expects a piece of music to structure, unify and thereby re-constitute the externally given time frame. Such an expectation is foreign to Jazz music which doesn’t relate the moment to a goal provided by a large scale structure. Rather, one moment is carried on to the next, preserving the stimulus potentially ad infinitum. How does such an organization of time affect the large scale form? The paper tries to answer this question by analyzing two examples which permit to trace the transformation of a classical form into a form germane to Jazz music.

Combine Nanoprobing Technique with Difference Analysis to Identify Nonvisual Failures

2006 ◽  
Author(s):  
Cha-Ming Shen ◽  
Tsan-Cheng Chuang ◽  
Jie-Fei Chang ◽  
Jin-Hong Chou
Keyword(s):  
Failure Mode ◽  
Failure Modes ◽  
Electrical Characteristic ◽  
The Novel ◽  
Difference Analysis ◽  
Original Idea ◽  
Deductive Method ◽  
Complete Measurement

Abstract This paper presents a novel deductive methodology, which is accomplished by applying difference analysis to nano-probing technique. In order to prove the novel methodology, the specimens with 90nm process and soft failures were chosen for the experiment. The objective is to overcome the difficulty in detecting non-visual, erratic, and complex failure modes. And the original idea of this deductive method is based on the complete measurement of electrical characteristic by nano-probing and difference analysis. The capability to distinguish erratic and invisible defect was proven, even when the compound and complicated failure mode resulted in a puzzling characteristic.

Celiac Disease in Kosovar Albanian Children: Evaluation of Clinical Features and Diagnosis

2020 ◽  
Vol 16 (3) ◽  
pp. 241-247
Author(s):  
Atifete Ramosaj-Morina ◽  
Alije Keka-Sylaj ◽  
Arbana Baloku Zejnullahu ◽  
Lidvana Spahiu ◽  
Virgjina Hasbahta ◽  
...  
Keyword(s):  
Celiac Disease ◽  
Disease Onset ◽  
Clinical Manifestations ◽  
Gastrointestinal Symptoms ◽  
Dominant Mode ◽  
Primary School Children ◽  
Cross Sectional ◽  
Classical Form ◽  
Wide Range ◽  
The Mean

Background: Celiac disease is an immune-mediated disorder characterized by variable clinical manifestations, specific antibodies, HLA-DQ2/DQ8 haplotypes, and enteropathy. Objectives: The aim of this study was to present the clinical spectrum and patterns of celiac disease in Kosovar Albanian children. Methods: A cross-sectional retrospective study was performed with Albanian children aged 0-18 years, treated for celiac disease in the Pediatric Clinic, University Clinical Center of Kosovo from 2005 to 2016. Results: During the study period, 63 children were treated for celiac disease. The mean age at diagnosis was 5.5 years (SD ± 3.31). The mean age at celiac disease onset was 3.3 years (SD ± 2.02), while the mean delay from the first symptoms indicative of celiac disease to diagnosis was 2.2 years (SD ± 2.09). More than 70% of the patients were diagnosed in the first 7 years of life, mainly presented with gastrointestinal symptoms, while primary school children and adolescents mostly showed atypical symptoms (p<0.001). The classical form of celiac disease occurred in 78% of the cases. Sixty (95%) patients carried HLA-DQ2.5, DQ2.2 and/or HLA-DQ8 heterodimers, and only three of them tested negative. Conclusions: Kosovo, as the majority of developing countries, is still facing the classical form of celiac disease as the dominant mode of presentation; as a result, most children with other forms of the celiac disease remain undiagnosed. : Physicians should be aware of the wide range of clinical presentations and utilize low testing thresholds in order to prevent potential long-term problems associated with untreated celiac disease.

Current Approaches to the Diagnosis of Classical form of Congenital Adrenal Hyperplasia

2015 ◽  
Vol 9 (2) ◽  
pp. 103-110 ◽  
Author(s):  
Elwira Przybylik-Mazurek ◽  
Anna Kurzynska ◽  
Anna Skalniak ◽  
Alicja Hubalewska-Dydejczyk
Keyword(s):  
Congenital Adrenal Hyperplasia ◽  
Adrenal Hyperplasia ◽  
Classical Form

Jozef Duysans gevecht met den engel. Schermutselingen rond het graf van Paul Van Ostaijen

2012 ◽  
Vol 71 (4) ◽  
pp. 299-328
Author(s):  
Armand Van Nimmen
Keyword(s):  
Crucial Role ◽  
Second World War ◽  
World War ◽  
Nineteen Thirties ◽  
Public Monuments ◽  
Deep Waters ◽  
Original Idea ◽  
The City ◽  
Second World

Deze bijdrage handelt over de perikelen in de jaren dertig rond het plan om het lichamelijk overschot van de Vlaamse dichter Paul Van Ostaijen over te brengen uit het klein Waals dorp waar hij in vergetelheid begraven lag onder een houten kruis naar zijn geboortestad Antwerpen. Daar zou hij herbegraven worden op de stedelijke begraafplaats Schoonselhof onder een gepaste denksteen. Zoals meermaals het geval is bij het oprichten van publieke monumenten, verliepen – wegens onderling gekibbel en gebrek aan financiële middelen – meer dan zes jaren vooraleer de oorspronkelijke idee kon verwezenlijkt worden.Aandacht in dit artikel gaat naar Jozef Duysan, bewonderaar van de dichter en uitgesproken flamingant, die een cruciale rol speelde in de conceptie en uitvoering van het initiatief. Ten slotte beschrijft het artikel hoe deze nu bijna totaal vergeten man tijdens de Tweede Wereldoorlog in het vaarwater geraakte van de collaboratie, fungeerde als directeur van het Arbeidsamt in Antwerpen, na de oorlog veroordeeld werd en jaren lang ondergedoken leefde in die stad.________Jozef Duysan’s battle with the angel: Skirmishes around the tomb of Paul Van OstaijenThis contribution reports the vicissitudes concerning the plan dating from the nineteen thirties to transfer the mortal remains of the Flemish poet Paul Van Ostaijen from the small Walloon village where he was buried in oblivion under a wooden cross to Antwerp, the city of his birth. He was to be reburied there on the municipal cemetery Schoonselhof under a fitting memorial headstone. As frequently happens on the occasion of creating public monuments, more than six years passed before the original idea could be carried out – because of internal bickering and lack of financial means. This article focuses on Jozef Duysan, an admirer of the poet and an explicit Flemish militant, who played a crucial role in the concept and realisation of the initiative. In conclusion the article recounts how this man who has been practically completely forgotten now,  ventured into the deep waters of the collaboration during the Second World War, how he acted as director of the Arbeidsamt in Antwerp and how he was convicted after the war and lived for many years in hiding in that city.

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