scholarly journals Feet Load Distribution in Subjects with Mandibular Rotations

2021 ◽  
Vol 5 (3) ◽  

This study was carried out to evaluate the load distribution along the two feet in subjects with rotated mandibles. This study used the Staticus device from Smylist® to map the foot pressure loads after the three jump test. Data was obtained from 20 subjects. The Staticus data was acquired by the Smylist® analytic software and the load distribution patterns were obtained. Subjects were selected so as to have at least 75% of them exhibiting an asymmetrical vertically displaced pattern. The Smylist® concept has presented a logical sequence of events which leads from a rotated mandible to overloading of one leg based on the complexity of the mandibular rotation. This is the first study ever to digitally ascertain the variation in the load patterns. It was found that in the subjects who exhibited a vertical foot position discrepancy also had a discrepancy in the load patterns and mandibular rotations.

Antichthon ◽  
1975 ◽  
Vol 9 ◽  
pp. 68-80 ◽  
Author(s):  
C.M. Mayrhofer

The late B. E. Perry’s work on the stories of Aristomenes and Thelyphron in Apuleius’s Metamorphoses is a classic of its kind. Originally a by-product of his doctoral dissertation on Lucius of Patrae, it has stood the test of time as a critical analysis of Apuleius’s narrative style; Perry himself repeated his analysis with only minor changes of emphasis forty odd years later in The Ancient Romances, having energetically repelled a few attacks early in its career, and it holds the field still. His study on the two stories observes an effect which all readers sense in the text, perhaps without being aware of it as a distinct phenomenon, and traces this effect to certain causes which lie under the surface of the text. As he said: ‘I am trying to explain for myself and others the secret of that exceedingly strange and romantic effect which certain of (Apuleius’s) stories produce.’ He goes on to remark: ‘Only a part of this effect is produced by the subject matter as such’; that which is peculiar to Apuleius, ‘the unique element … which contributes most of a reader’s sense of mystification, even when he is not aware of it, is the absence of a natural and normally logical sequence of events …’


1972 ◽  
Vol 94 (2) ◽  
pp. 181-186 ◽  
Author(s):  
H. Zantopulos

A comprehensive analytical and experimental study of the effect of misalignment on load distribution and fatigue life of tapered roller bearings is presented. Included are the effects of truncation of crowned rollers and edge of contact stresses. Bearing life tests, involving approximately 500 bearings, were run at various loads and misalignments to obtain sufficient test data to substantiate the analytical results.


2014 ◽  
Vol 8 (1) ◽  
pp. 311-319 ◽  
Author(s):  
Zhang Zhonghao ◽  
Ma Huihuan ◽  
Fujimoto Masumi ◽  
Fu Qiang

Single layer two-way grid shell with in-plane and out-of-plane tension members is a new type of single-layer latticed shell roof. This study treats the effects of tension member installation on the buckling load and strength of a single layer two-way grid cylindrical shell roof by the numerical method. The tension members are installed to stiffen the rigidity of a single layer two-way grid shell roof and improve its stability behavior. Tension member installation and placement pattern is focused as both diagonal members of two-way grids and out-of-plane stiffened members in a cylindrical surface. The diagonal member and the out-of-plane member are used to increase the in-plane and the out-of-plane rigidity of a single layer two-way grid shell, respectively. The tension member placement pattern, the load distribution patterns, the initial imperfections and the initial axial force are considered for the numerical calculation parameters. It is confirmed by the numerical analysis that the tension members in out-of-plane and diagonals caused the increase in the buckling and strength of two-way grid shell.


2020 ◽  
Vol 5 (1) ◽  
pp. 32-38
Author(s):  
Nanda Saputra ◽  
Ishak Aziz

Masalah dalam penelitian ini adalah masih rendahnya prestasi yang diraih oleh pemain bolavoli putra SMA 2 Pariaman. Jenis penelitian ini adalah deskriptif yang bertujuan untuk mengungkapkan tentang gambaran kondisi fisik yang dimiliki pemain bolavoli putra SMA 2 Pariaman. Populasi dalam penelitian ini adalah seluruh pemain bolavoli putra SMA 2 Pariaman berjumlah 14 orang yang terdaftar pada kegiatan Eksrtrakulikuler di sekolah. Penarikan sampel dilakukan dengan teknik sample jenuh, jadi jumlah sampel sebanyak 14 orang. Instrumen yang digunakan untuk mengukur daya ledak otot tungkai dengan vertical jump test, daya ledak otot lengan diukur dengan one hand medicine ball putt, dan daya tahan digunakan dengan VO2max yaitu bleep test. Data dianalisis dengan menggunakan rumus distribusi frekuensi dalam bentuk persentase X 100 %.Berdasarkan analisis data, diperoleh hasil penelitian sebagai berikut (1) daya ledak otot tungkai diperoleh nilai rata-rata 91,40 k4 m/sec meter dikategorikan cukup; (2) daya ledak otot lengan diperoleh nilai rata-rata 8,68 meter dikategorikan cukup; (3) daya tahan diperoleh nilai rata-rata 40,26 dengan kategori cukup.


2019 ◽  
pp. 40-50
Author(s):  
Viktor Melnyk

Objective of the study: to classify and identify the main causes of the process of political self-destruction of the German ethnic minority in the territory of Czechoslovakia; to propose, substantiate and introduce into scientific circulation the concept of political self-destruction of the German community in the territory of the Protectorate of Bohemia and Moravia, which existed under the suzerainty of the Third Reich from March 15, 1939 to May 13, 1945. Methodology: Therefore, the journalistic and literary works of the Protectorate of Bohemia and Moravia were analyzed, as well as legal documents and diplomatic protocols adopted following the Yalta Conference (February 4 — F ebruary 11, 1945), the Potsdam Conference (July 17 — August 2, 1945). With the help of the traditional complex of historical and legal methods (text study, comparative analysis, legal analogy), were analyzed the content and external forms of legal succession of the Protectorate of Bohemia and Moravia in relation to the First Czechoslovak Republic (October 28, 1918 — September 30, 1938) and the Second Czechoslovak Republic (September 30, 1938 — March 15, 1939). Structural and functional method allowed to isolate the main reasons for the successful cultural and socio-economic coexistence of Germans and Czechs in the territory of the Protectorate of Bohemia and Moravia under the auspices of the Third Reich in 1939–1945. The socio-psychological approach, in turn, determined the political-political characterization of the rise of interethnic hostility of the Czechs to the Germans. The article argues that the cause of the massacres of Germans by Czech fighters (actions with clear signs of genocide) during 1945–1950 was the transfer of the so-called «guilt for Soviet occupation» by the Czech collective consciousness to the Germans. With the help of English and Soviet propaganda, a negative image of the Germans in the mass media was simultaneously formed. Results and conclusions: The history of the Czechoslovak Republic of 1918–1939 is a prime example of the confrontation between spatial and ethno-linguistic political ideologues. On the one hand, there were Sudeten and Bohemian Germans, supported by the strong movement of the Nazis. On the other hand, the concept of Central European Slavic integration, known as «Czechoslovakism». The struggle between these two ideologues often falls out of sight of contemporary political scientists (political scientists) and historians. This article does not fill the gap, but aims to demonstrate the Czech-German ethno-political conflict of the mid-twentieth century in the form of a logical sequence of events that led to the collapse of both Pan-Germanism and Czechoslovakism. The bloody war between the Slavs and the Germans in the center of Europe ended with the victory of «third power» — ideology of communism.


Author(s):  
Robert G. Lee ◽  
Ida Tonolli ◽  
Francois Viallet ◽  
Roslyn Aurenty ◽  
Jean Massion

AbstractBackground:Postural instability is a common problem in patients with Parkinson’s disease. This paper reports results of a study undertaken to investigate some of the possible mechanisms responsible for this instability.Methods:Preparatory postural adjustments associated with a lateral leg raising task were studied in five parkinsonian patients and four age-matched controls. Recordings included ground reaction forces, kinematics, and surgace EMG activity from multiple leg muscles.Results:In normal subjects there was a well-defined sequence of events preceding the onset of leg elevation, beginning with a transfer of centre of foot pressure (CP), initially toward the moving leg and then back to the support side, followed by displacement of the trunk toward the support side. In the more severely affected parkinsonian patients, the amplitude of the the initial displacement of CP was markedly reduced. The interval between the earliest force changes and the onset of leg elevation was prolonged and the relative timing of the kenematic adjustments during this interval was disrupted. In addition the alternating burst and periods of inhibition observed in the EMG recordings from the normal subjects were replaced by continuous tonic EMG activity.Conclusions:These observations suggest that abnormalities in programming preparatory postural adjustments may contribute to postural instability in some patients with advanced Parkinson’s disease.


2017 ◽  
Vol 33 (3) ◽  
pp. 1033-1052 ◽  
Author(s):  
Neda Nabid ◽  
Iman Hajirasouliha ◽  
Mihail Petkovski

Friction control systems have been widely used as one of the efficient and cost effective solutions to control structural damage during strong earthquakes. However, the height-wise distribution of slip loads can significantly affect the seismic performance of the strengthened frames. In this study, a practical design methodology is developed for more efficient design of friction wall dampers by performing extensive nonlinear dynamic analyses on 3-, 5-, 10-, 15-, and 20-story RC frames subjected to seven spectrum-compatible design earthquakes and five different slip load distribution patterns. The results show that a uniform cumulative distribution can provide considerably higher energy dissipation capacity than the commonly used uniform slip load pattern. It is also proved that for a set of design earthquakes, there is an optimum range for slip loads that is a function of number of stories. Based on the results of this study, an empirical equation is proposed to calculate a more efficient slip load distribution of friction wall dampers for practical applications. The efficiency of the proposed method is demonstrated through several design examples.


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