scholarly journals Introduction to AIEDAM

2002 ◽  
Vol 16 (1) ◽  
pp. 1-1
Author(s):  
DAVID C. BROWN
Keyword(s):  
The Third ◽  
High Standards ◽  
Professional Interactions

I am very pleased to have been appointed to be the new Editor of the AIEDAM journal: only the third in its 15 years of existence. My involvement with AIEDAM started early in the life of the journal, due to my professional interactions with Professor Clive Dym, its first Editor. Clive put the journal on a very sound footing, and set the high standards that the journal continues to uphold. That it has maintained such a high reputation in the fields that it covers is due to Professor William Birmingham, the second Editor. My goal is to continue with the policies developed by these two prior Editors, while striving to raise the journal's standards, reputation, and visibility even further.

New Developments for the Description of Oil Leakages by Advective Migration From Submarine Pipelines

2009 ◽  
Vol 131 (3) ◽  
Author(s):  
Renan Martins Baptista ◽  
Ricardo Antonio Francisco Machado ◽  
Marintho Bastos Quadri ◽  
Ariovaldo Bolzan ◽  
André Lourenço Nogueira ◽  
...  
Keyword(s):  
Horizontal Plane ◽  
Immiscible Displacement ◽  
Preliminary Evaluation ◽  
Leakage Detection ◽  
New Developments ◽  
Gravitational Flow ◽  
The Third ◽  
Alternative Approach ◽  
High Standards ◽  
Good Agreement

The significant growth in offshore operations increases the risk of a pipeline rupture, even considering the high standards of safety involved. Throughout a submarine leakage, four different amounts of oil may be accounted. The first one is the oil volume released until the leakage detection. The second one is the volume leaked throughout mitigation initiatives (e.g., pump shutdown and valve closure). The third parcel is the amount released by gravitational flow. Finally, the fourth and last amount of oil is released due to the water-oil entrainment, generally known as advective migration. Normally, a considerable amount of oil is released in this step. It begins just after the internal pipeline pressure becomes equal to the external one. The present work continues to introduce a mathematical alternative approach, based on the theories of perturbation and unstable immiscible displacement, to accurately estimate the leakage kinetics and the amount of oil released by the advective migration phenomenon. Situations considering different hole sizes and thicknesses were tested experimentally and through simulations. Additional experiments were accomplished using smooth and rough edge surfaces, besides different slopes (using the horizontal plane as reference). Those experiments permitted a preliminary evaluation of the importance of these factors. The results obtained with the model showed good agreement with the experimental data in many situations considered.

scholarly journals Basic philosophical texts in Medieval Serbia

Balcanica ◽  
2008 ◽  
pp. 79-102
Author(s):  
Boris Milosavljevic
Keyword(s):  
Fourteenth Century ◽  
Social Event ◽  
Philosophical Text ◽  
Highly Educated ◽  
The Third ◽  
Philosophical Texts ◽  
High Standards ◽  
Theological Debate ◽  
Christian Platonism ◽  
Central Social

Medieval Serbian philosophy took shape mostly through the process of translating Byzantine texts and revising the Slavic translations. Apart from the Aristotelian terminological tradition, introduced via the translation of Damascene?s Dialectic, there also was, under the influence of the Corpus Areopagiticum and ascetic literature, notably of John Climacus? Ladder, another strain of thought originating from Christian Platonism. Damascene?s philosophical chapters, or Dialectic, translated into medieval Serbian in the third quarter of the fourteenth century, not only shows the high standards of translation technique developed in Serbian monastic scriptoria, but testifies to a highly educated readership interested in such a complex theologico-philosophical text with its nuanced terminology. A new theological debate about the impossibility of knowing God led to Gregory Palamas? complex text, The Exposition of the Orthodox Faith. Philosophical texts were frequently copied and much worked on in medieval Serbia, but it is difficult to infer about the actual scope of their influence on the formation and articulation of the worldview of medieval society. As a result of their demanding theoretical complexity, the study of philosophy was restricted to quite narrow monastic, court and urban circles. However, the strongest aspect of the influence of Byzantine thought on medieval society was the liturgy as the central social event of the community. It was through the liturgy that the wording of the translated texts influenced the life of medieval Serbian society.

New Developments for the Description of Oil Leakages by Advective Migration From Submarine Pipelines

2006 ◽  
Author(s):  
Renan Martins Baptista ◽  
Ricardo Antonio Francisco Machado ◽  
Marintho Bastos Quadri ◽  
Ariovaldi Bolzan ◽  
Andre´ Lourenc¸o Nogueira ◽  
...  
Keyword(s):  
Horizontal Plane ◽  
Immiscible Displacement ◽  
Preliminary Evaluation ◽  
Leakage Detection ◽  
New Developments ◽  
Gravitational Flow ◽  
The Third ◽  
Alternative Approach ◽  
High Standards ◽  
Good Agreement

The significant growing in offshore operations increases the risk of a pipeline rupture, even considering the high standards of safety involved. Throughout a submarine leakage, four different amounts of oil may be accounted. The first one is the oil volume released until the leakage detection. The second one is the volume leaked throughout mitigation initiatives (e.g. pump shut-down and valve closure). The third parcel is the amount released by gravitational flow. Finally, the fourth and last amount of oil is released due to the water-oil entrainment, generally known as advective migration. Normally, a considerable amount of oil is released in this step. It begins just after the internal pipeline pressure becomes equal to the external one. The present work continues to introduce a mathematical alternative approach, based on the theories of perturbation and unstable immiscible displacement, to accurately estimate the leakage kinetics and the amount of oil released by the advective migration phenomenon. Situations considering different holes sizes and thickness were tested experimentally and through simulations. Additional experiments were accomplished using smooth and rough edge surfaces, besides different slopes (using the horizontal plane as reference). Those experiments permitted a preliminary evaluation of the importance of these factors. The results obtained with the model showed good agreement with experimental data in many situations considered.

scholarly journals PERFECTIONISM: RESOURCE OF PATHOLOGY

2021 ◽  
Vol 7 ◽  
pp. 123-133
Author(s):  
Inese Jokste
Keyword(s):  
Literature Review ◽  
Personal Growth ◽  
Current Knowledge ◽  
Theoretical Background ◽  
Positive Outcomes ◽  
Negative Consequences ◽  
The Third ◽  
Negative Trait ◽  
High Standards ◽  
The Impact

The main trait differing perfectionists from other individuals is high standards, which is the unifying feature in all models. No matter how well the theories and models of perfectionism are developed, there has always been disagreement about the nature of perfectionism – is it 'The Good, the Bad or the Ugly?' The paper aims to review the studies focused on the mechanisms behind perfectionistic representation, its threats to psychological wellbeing, caused by its pathological side, and look into perfectionism as a possible resource for personal growth and achievement. In the first section of the paper, the aetiology of perfectionism is viewed to see if the foundations add to the type of perfectionism formed. In the second section, models of perfectionism are discussed to see their ability to distinguish between adaptive and maladaptive perfections. Finally, in the third section, perfectionism's positive and negative sides are discussed to understand when perfectionism becomes pathological and when it can be viewed as a resource. In the research of perfectionism, the quantitative approach is mostly used. However, the literature review provides the possibility to have an overview of current knowledge on the nature of perfectionism and to identify gaps in the existing research. The results show that although perfectionism may be viewed both as a positive and negative trait, its negative consequences prevail over its possible positive outcomes. Complex research involving several perfectionism measurements is needed to understand the impact of different combinations of perfectionism types on positive and negative outcomes. The findings of the literature review will serve as the theoretical background for studying perfectionism, its pathological traits, and its possible contribution to achievement.

The Beginnings of a New Technology: The Constructors of Early Steamboats, 1812-1822

2011 ◽  
pp. 277-300
Author(s):  
John Armstrong ◽  
David M. Williams
Keyword(s):  
New Technology ◽  
Technological Advance ◽  
The Third ◽  
Short Space ◽  
High Standards

This final chapter considers the engineering and building work involved in the construction of early steamships, using a list of steamboats built between 1811 and 1822 that the authors discovered in British Parliamentary papers. It is divided into five sections. The first explores the source and the possible reasons it has been neglected by historians, and compares it to other contemporary sources to determine its validity. The second explores tonnage and horsepower figures to establish reflective trends. The third explores hull building and the skills and materials necessary, plus the location of their shipyards and the men who worked there. The fourth does the same for engine building, a separate activity requiring different skillsets and materials altogether. The authors highlight that this source is the first to demonstrate the division between hull and engine construction.The fifth section places the findings into context through an exploration of innovation dispersal. The conclusion applies the findings to a wider and long term context, suggesting that the tremendous rate of technological advance in steamships meant that high standards and specialisation became extremely valuable in a very short space of time.

Progress report on 21-cm observations at low latitude between longitudes (l 11) 0° and 66°

1967 ◽  
Vol 31 ◽  
pp. 177-179
Author(s):  
W. W. Shane
Keyword(s):  
Preliminary Report ◽  
Progress Report ◽  
Galactic Centre ◽  
Low Latitude ◽  
The Third ◽  
Introductory Lecture ◽  
Centre Region

In the course of several 21-cm observing programmes being carried out by the Leiden Observatory with the 25-meter telescope at Dwingeloo, a fairly complete, though inhomogeneous, survey of the regionl11= 0° to 66° at low galactic latitudes is becoming available. The essential data on this survey are presented in Table 1. Oort (1967) has given a preliminary report on the first and third investigations. The third is discussed briefly by Kerr in his introductory lecture on the galactic centre region (Paper 42). Burton (1966) has published provisional results of the fifth investigation, and I have discussed the sixth in Paper 19. All of the observations listed in the table have been completed, but we plan to extend investigation 3 to a much finer grid of positions.

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

Monte Carlo Algorithms for Moments of Transition Arrays

1988 ◽  
Vol 102 ◽  
pp. 79-81
Author(s):  
A. Goldberg ◽  
S.D. Bloom
Keyword(s):  
Monte Carlo ◽  
State Vector ◽  
Basis Vector ◽  
Collective State ◽  
Dispersion Characteristics ◽  
Dipole Strength ◽  
The Third ◽  
Monte Carlo Algorithms ◽  
Third Moment ◽  
Very High

AbstractClosed expressions for the first, second, and (in some cases) the third moment of atomic transition arrays now exist. Recently a method has been developed for getting to very high moments (up to the 12th and beyond) in cases where a “collective” state-vector (i.e. a state-vector containing the entire electric dipole strength) can be created from each eigenstate in the parent configuration. Both of these approaches give exact results. Herein we describe astatistical(or Monte Carlo) approach which requires onlyonerepresentative state-vector |RV> for the entire parent manifold to get estimates of transition moments of high order. The representation is achieved through the random amplitudes associated with each basis vector making up |RV>. This also gives rise to the dispersion characterizing the method, which has been applied to a system (in the M shell) with≈250,000 lines where we have calculated up to the 5th moment. It turns out that the dispersion in the moments decreases with the size of the manifold, making its application to very big systems statistically advantageous. A discussion of the method and these dispersion characteristics will be presented.

Probe size and 5th-order aberration

1987 ◽  
Vol 45 ◽  
pp. 134-135 ◽  
Author(s):  
Zhifeng Shao
Keyword(s):  
Electron Probe ◽  
Spherical Aberration ◽  
Wave Length ◽  
Cylindrical Symmetry ◽  
Electron Wave ◽  
Third Order ◽  
The Third ◽  
Probe Radius ◽  
Small Probe ◽  
Probe Size

A small electron probe has many applications in many fields and in the case of the STEM, the probe size essentially determines the ultimate resolution. However, there are many difficulties in obtaining a very small probe.Spherical aberration is one of them and all existing probe forming systems have non-zero spherical aberration. The ultimate probe radius is given byδ = 0.43Csl/4ƛ3/4where ƛ is the electron wave length and it is apparent that δ decreases only slowly with decreasing Cs. Scherzer pointed out that the third order aberration coefficient always has the same sign regardless of the field distribution, provided only that the fields have cylindrical symmetry, are independent of time and no space charge is present. To overcome this problem, he proposed a corrector consisting of octupoles and quadrupoles.

The effects of Cyclosporin-A (CYA) on the Ultrastructure of Gingival Mast Cells (GMC) in Behcet's disease (BD)

1990 ◽  
Vol 48 (3) ◽  
pp. 358-359
Author(s):  
Oktay Arda ◽  
Ulkü Noyan ◽  
Selgçk Yilmaz ◽  
Mustafa Taşyürekli ◽  
İsmail Seçkin ◽  
...  
Keyword(s):  
Unknown Etiology ◽  
Control Group ◽  
Target Cells ◽  
Gingival Hyperplasia ◽  
Cellular Activity ◽  
Direct Relation ◽  
Immune Disease ◽  
Genital Ulceration ◽  
Functional Changes ◽  
The Third

Turkish dermatologist, H. Beheet described the disease as recurrent triad of iritis, oral aphthous lesions and genital ulceration. Auto immune disease is the recent focus on the unknown etiology which is still being discussed. Among the other immunosupressive drugs, CyA included in it's treatment newly. One of the important side effects of this drug is gingival hyperplasia which has a direct relation with the presence of teeth and periodontal tissue. We are interested in the ultrastructure of immunocompetent target cells that were affected by CyA in BD.Three groups arranged in each having 5 patients with BD. Control group was the first and didn’t have CyA treatment. Patients who had CyA, but didn’t show gingival hyperplasia assembled the second group. The ones displaying gingival hyperplasia following CyA therapy formed the third group. GMC of control group and their granules are shown in FIG. 1,2,3. GMC of the second group presented initiation of supplementary cellular activity and possible maturing functional changes with the signs of increased number of mitochondria and accumulation of numerous dense cored granules next to few normal ones, FIG. 4,5,6.

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