Analytical Conditions for Motion Complexity of a 2-DOF Friction-Induced Oscillator Moving on Two Oscillators

2009 ◽  
Author(s):  
Albert C. J. Luo ◽  
Yang Wang
Keyword(s):  
Dry Friction ◽  
Physical Problem ◽  
Points Of View ◽  
The Absolute ◽  
Motion Complexity

In this paper, the analytical conditions for stick and nonstick motions are discussed in 2-DOF friction induced oscillator moving on two oscillators. From physical points of view, the physical problem is stated. In order to develop the analytical conditions for stick and non-stick motion, the absolute and relative descriptions are given for a better understanding of the complex motions in such a 2-DOF oscillator interacting with two individual oscillators through dry friction. The analytical conditions are sketched intuitively.

scholarly journals The Unknown God and His Theophanies

1970 ◽  
Vol 15 (1) ◽  
pp. 161-174
Author(s):  
Maciej Manikowski
Keyword(s):  
Real Difference ◽  
The Real ◽  
Points Of View ◽  
The Absolute ◽  
The One

The analysis, which aims at the interpretation of the three theophanies from Exodus presents—from the metaphysical and epistemological points of view—three fundamental ideas. First, the idea of the absolute unknowability of the essence of God; second, the idea of the real difference between essence and energies in God’s Being; and third, the idea of the real difference between the one essence, three persons (hypostases) and many uncreated divine energies (the powers or names) of God. One must say that the absolute unknowability of the essence of God means that God is forever the unknown God.

scholarly journals THE TURN OF THE SCREW: HENRY JAMES AS AN AUTHOR AND A CRITIC

2020 ◽  
pp. 55-67
Author(s):  
M.B. Rarenko ◽  
Keyword(s):  
Henry James ◽  
William James ◽  
Absolute Truth ◽  
The Core ◽  
Works Of Art ◽  
Starting Point ◽  
The World ◽  
New Type ◽  
Points Of View ◽  
The Absolute

The article considers the story by Henry James (1843 – 1916) «The Turn of the Screw» (1898 – first edition, 1908 – second edition) in connection with the emergence of a new type of narrator in the writer's late prose. The worldview and creative method of H. James are formed under the influence of the philosophy of pragmatism, which became widespread at the turn of the XIX-XX centuries thanks to the works of the writer's elder brother, the philosopher William James (1842 – 1910). The core of pragmatism is the pluralistic concept of William James based on the assumption that knowledge can be realized from very limited, incomplete, and inadequate «points of view» and this leads to the statement that the absolute truth is essentially unknowable. The epistemological statements of William James's theory is that the content of knowledge is entirely determined by the installation of consciousness, and the content of the truth in this case depends on the goals and experience of the human, i.e. the central starting point is the consciousness of the person. Henry James not only creates works of art, but also sets out in detail the principles of his work both on the pages of fiction works of small and large prose, putting them in the mouths of their characters – representatives of the world of art, and in the prefaces to his works of fiction, as well as in critical works.

Is it all relative?

Think ◽  
2002 ◽  
Vol 1 (2) ◽  
pp. 69-82
Author(s):  
Stephen Law
Keyword(s):  
New Age ◽  
Feng Shui ◽  
Absolute Truth ◽  
Points Of View ◽  
The Absolute

According to relativists, people who speak simply of what's ‘true’ are naïve. ‘Whose truth?’ asks the relativist. ‘No claim is ever true, period. What's true is always true for someone. It's true relative to a particular person or culture. There's no such thing as the absolute truth on any issue.’This sort of relativism is certainly popular. For example, many claim that we are wrong to condemn cultures with moral codes different from our own: their moralities are no less valid. Similarly, some claim that while astrology and Feng Shui might be ‘false’ from a Western, scientific viewpoint, they are ‘true’ when viewed from alternative, New Age points of view. What's ‘true’ and what's ‘false’ ultimately depend on where one is standing.Is this sort of relativism about truth tenable?

Apophatical Metaphysics of a Subject

1998 ◽  
pp. 90-94
Author(s):  
Igor D. Nevvazhay
Keyword(s):  
Moral Education ◽  
Main Idea ◽  
Point Of View ◽  
Human Being ◽  
Existing Structures ◽  
The World ◽  
The Subject ◽  
Points Of View ◽  
The Absolute ◽  
Philosophical Understanding

In this paper, the inevitability of the metaphysics of a subject for the philosophical understanding of a person’s being in the world is established, and the apophatic character of this type of metaphysics is discussed. Analysis of the categories of being and non-being which allow the interpretation of a subject as transcendent and as transcendental being that is characterized by uniformity, spontaneity and irreversibility is also mentioned. The suggested interpretation of a subject discloses both the rational sense of the classical points of view on the absolute, unconditional, timeless and spaceless character of the subject of knowledge, and the compatibility of the notions of the absolute character of a subject and the ontological condition of a human being in society and culture. The main idea of the suggested conception of a subject is the fact that the subject’s being cannot be "housed" into the world, nor can it be characterized as impossible existence for the world. The world can be understood only from the point of view of being impossible (symbolic) existence. The discussion of the problem of identification of a subject shows that the presumption of a subject as one of the existing structures of the world leads to paradoxes and contradictions in the interpretation of the processes taking place in the world. To understand the process of education, it is necessary to bear in mind that it is not only cognitive, but also moral: education is the process of the formation of a subject of knowledge through identification with transcendental symbolic existence, which fact demands making efforts to be on the part of the thinking person.

Coexisting chaotic and periodic dynamics in clock escapements

2006 ◽  
Vol 364 (1846) ◽  
pp. 2539-2564 ◽  
Author(s):  
Francis C Moon ◽  
Preston D Stiefel
Keyword(s):  
Mathematical Model ◽  
Strange Attractor ◽  
Dry Friction ◽  
Gear Train ◽  
Structural Vibration ◽  
Control Of Chaos ◽  
Internal Feedback ◽  
Cornell University ◽  
Points Of View ◽  
Periodic Dynamics

This paper addresses the nature of noise in machines. As a concrete example, we examine the dynamics of clock escapements from experimental, historical and analytical points of view. Experiments on two escapement mechanisms from the Reuleaux kinematic collection at Cornell University are used to illustrate chaotic-like noise in clocks. These vibrations coexist with the periodic dynamics of the balance wheel or pendulum. A mathematical model is presented that shows how self-generated chaos in clocks can break the dry friction in the gear train. This model is shown to exhibit a strange attractor in the structural vibration of the clock. The internal feedback between the oscillator and the escapement structure is similar to anti-control of chaos models.

High Resolution Specimen Area Imaged Under Negligible Field Aberrations

1970 ◽  
Vol 28 ◽  
pp. 540-541 ◽  
Author(s):  
T. Yanaka ◽  
K. Shirota
Keyword(s):  
High Resolution ◽  
Field Distribution ◽  
Image Space ◽  
Beam Deflection ◽  
Objective Lens ◽  
Resolution Limit ◽  
Leakage Flux ◽  
Specimen Area ◽  
Points Of View ◽  
Aberration Theory

It is significant to note field aberrations (chromatic field aberration, coma, astigmatism and blurring due to curvature of field, defined by Glaser's aberration theory relative to the Blenden Freien System) of the objective lens in connection with the following three points of view; field aberrations increase as the resolution of the axial point improves by increasing the lens excitation (k2) and decreasing the half width value (d) of the axial lens field distribution; when one or all of the imaging lenses have axial imperfections such as beam deflection in image space by the asymmetrical magnetic leakage flux, the apparent axial point has field aberrations which prevent the theoretical resolution limit from being obtained.

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

A Quantitative Ultrastructural Study of Peripheral Blood Lymphocytes Containing Parallel Tubular Arrays in Epstein-Barr Virus and Cytomegalo-Virus Mononucleosis

1981 ◽  
Vol 39 ◽  
pp. 454-455
Author(s):  
C. M. Payne ◽  
P. M. Tennican
Keyword(s):  
Peripheral Blood ◽  
Lymphocyte Count ◽  
Epstein Barr Virus ◽  
Absolute Lymphocyte Count ◽  
Peripheral Blood Lymphocytes ◽  
Clinical State ◽  
Barr Virus ◽  
The Absolute ◽  
Epstein Barr ◽  
Tubular Arrays

In the normal peripheral circulation there exists a sub-population of lymphocytes which is ultrastructurally distinct. This lymphocyte is identified under the electron microscope by the presence of cytoplasmic microtubular-like inclusions called parallel tubular arrays (PTA) (Figure 1), and contains Fc-receptors for cytophilic antibody. In this study, lymphocytes containing PTA (PTA-lymphocytes) were quantitated from serial peripheral blood specimens obtained from two patients with Epstein -Barr Virus mononucleosis and two patients with cytomegalovirus mononucleosis. This data was then correlated with the clinical state of the patient.It was determined that both the percentage and absolute number of PTA- lymphocytes was highest during the acute phase of the illness. In follow-up specimens, three of the four patients' absolute lymphocyte count fell to within normal limits before the absolute PTA-lymphocyte count.In one patient who was followed for almost a year, the absolute PTA- lymphocyte count was consistently elevated (Figure 2). The estimation of absolute PTA-lymphocyte counts was determined to be valid after a morphometric analysis of the cellular areas occupied by PTA during the acute and convalescent phases of the disease revealed no statistical differences.

Crystal structure images of large gold clusters and growing crystals by HRTEM

1984 ◽  
Vol 42 ◽  
pp. 428-429
Author(s):  
L.R. Wallenberg ◽  
J.-O. Bovin ◽  
G. Schmid
Keyword(s):  
Crystal Structure ◽  
Nucleation And Growth ◽  
Close Packing ◽  
Gold Clusters ◽  
Molecular Weight Determination ◽  
Growth Mechanisms ◽  
Starting Point ◽  
Different Types ◽  
Nucleation And Growth Mechanisms ◽  
Points Of View

Metallic clusters are interesting from various points of view, e.g. as a mean of spreading expensive catalysts on a support, or following heterogeneous and homogeneous catalytic events. It is also possible to study nucleation and growth mechanisms for crystals with the cluster as known starting point.Gold-clusters containing 55 atoms were manufactured by reducing (C6H5)3PAuCl with B2H6 in benzene. The chemical composition was found to be Au9.2[P(C6H5)3]2Cl. Molecular-weight determination by means of an ultracentrifuge gave the formula Au55[P(C6H5)3]Cl6 A model was proposed from Mössbauer spectra by Schmid et al. with cubic close-packing of the 55 gold atoms in a cubeoctahedron as shown in Fig 1. The cluster is almost completely isolated from the surroundings by the twelve triphenylphosphane groups situated in each corner, and the chlorine atoms on the centre of the 3x3 square surfaces. This gives four groups of gold atoms, depending on the different types of surrounding.

Polarity Determination in Sphalerite and Wurtzite Structures

1990 ◽  
Vol 48 (2) ◽  
pp. 500-501
Author(s):  
Stuart McKernan ◽  
C. Barry Carter
Keyword(s):  
Opposite Polarity ◽  
Single Domain ◽  
Polar Material ◽  
Electron Microscopic ◽  
Dynamical Interaction ◽  
X Ray ◽  
Polarity Determination ◽  
The Absolute ◽  
Microscopic Techniques

The determination of the absolute polarity of a polar material is often crucial to the understanding of the defects which occur in such materials. Several methods exist by which this determination may be performed. In bulk, single-domain specimens, macroscopic techniques may be used, such as the different etching behavior, using the appropriate etchant, of surfaces with opposite polarity. X-ray measurements under conditions where Friedel’s law (which means that the intensity of reflections from planes of opposite polarity are indistinguishable) breaks down can also be used to determine the absolute polarity of bulk, single-domain specimens. On the microscopic scale, and particularly where antiphase boundaries (APBs), which separate regions of opposite polarity exist, electron microscopic techniques must be employed. Two techniques are commonly practised; the first [1], involves the dynamical interaction of hoLz lines which interfere constructively or destructively with the zero order reflection, depending on the crystal polarity. The crystal polarity can therefore be directly deduced from the relative intensity of these interactions.

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