scholarly journals ASPECTS REGARDING THE LEVEL OF PERFORMANCE IN MATHEMATICS

2021 ◽  
Vol 18 (2) ◽  
pp. 57-62
Author(s):  
Monica A.P. PURCARU ◽  
Keyword(s):  
Student Progress ◽  
Main Factors ◽  
High Degree

In the present paper addressing the issue of advanced performance in mathematics, we seek to answer to the following study questions: “What are the main factors that lead to the achievement of advanced performance?”; “Which is the profile of the teacher able to train the Olympic students in Mathematics?”; “Why do teachers want for their students to achieve advanced performance in mathematics?”; “Why do the students want to reach a high degree of performance in Mathematics?”; “What difficulties could significantly impede on student progress?”; “What is the connection between enthusiasm and advanced performance in Mathematics?”; “ Why does an Olympic student participate in competitions?”.

scholarly journals Research and Testing Experimental Thermal Vacuum Stand TVK-2,5

2020 ◽  
Vol 26 (6) ◽  
pp. 23-26
Author(s):  
Yu.A. Poshtarenko ◽  
◽  
B.M. Rassamakin ◽  
Yu.M. Sydorenko ◽  
V.I. Khominich ◽  
...  
Keyword(s):  
Thermal Radiation ◽  
Heat Release ◽  
Outer Space ◽  
External Environment ◽  
Internal Heat ◽  
Cryogenic Temperatures ◽  
Thermal Vacuum ◽  
Complex Effect ◽  
Main Factors ◽  
High Degree

We present additional design features of the upgraded stand TVK-2,5, which provides a physical imitation of the complex effect on the object of the main factors of outer space, namely, deep vacuum, cryogenic temperatures, solar and terrestrial radiation, a high degree of absorption of thermal radiation by the external environment. The stand can be used to implement the internal heat release of the object and the dynamics of the object passing a given orbit.

scholarly journals The extent of the effect of saudization on the employment of local labor  in private hospitals from the point view of the owner of private hospitals: مدى تأثير السعودة على توظيف العمالة المحلية بالمستشفيات الخاصة في محافظة جدة من وجهة نظر أصحاب المستشفيات الخاصة

2020 ◽  
Vol 4 (6) ◽  
Author(s):  
Abdulaziz Mohammed Alshuhri
Keyword(s):  
Labor Market ◽  
Private Hospital ◽  
Foreign Worker ◽  
Modern Technology ◽  
Foreign Workers ◽  
Private Hospitals ◽  
Main Factors ◽  
Medical Specialities ◽  
High Degree ◽  
The Impact

This study aimed to reveal the main factors that obstruct the employment of local Saudi workers in private hospitals instead of foreign worker, and to determine the extent of application of the Saudization process in the Saudi private hospital sector, and to clarify the extent of the impact of the following variables: legal systems, expertise and competence, availability of specialities, and wages on the Saudization process from the viewpoint of owners of private hospitals. The descriptive-analytical method was used to achieve the aims of the study, and the questionnaire was the tool of the study, which distributed among (179) workers from the researched hospitals. The research reached a number of results, the most important of them were: there is a high degree of importance for the Saudization axis in appointing employees in hospitals, and there is a high degree of importance for the following axes: wages, the availability of rare medical specialities, the experience of the medical staff, and the skills of using modern technology. Based on the results the researcher proposed a number of suggestions, among them: The necessity of working on establishing a minimum wage, as the low wages have no effects on employing foreign workers instead of local labor, and the need to work on qualifying the Saudi citizens with the rare and the few specializations in the labor market.

scholarly journals The Father’s Curse in Fyodor Dostoevsky’s Novel The Humiliated and the Insulted

2021 ◽  
pp. 172-179
Author(s):  
Daria G. Shervarly
Keyword(s):  
The Other ◽  
The Novel ◽  
Prodigal Son ◽  
Significant Difference ◽  
Main Factors ◽  
The One ◽  
High Degree ◽  
Proper Behavior

One of the significant themes of the novel The Humiliated and the Insulted is the father’s curse, marked throughout the text by a high degree of emotionality. The novel describes two similar stories: the one of Nelly’s mother and Natasha’s. Both escaped from home, both were cursed by their fathers. However, there are also differences: while one father forgave, the other not. In the article, the theme of the father’s curse is revealed by comparing these two stories with the famous parable of the prodigal son, with which the novel presents visible parallels. The parable is presented as a standard for proper behavior, and in its comparison, we can say how the hero should have behaved and how he did in the novel. While the images of “prodigal children” recall each other, it is the behavior of parents that draws a significant difference between Dostoevsky’s plot and the parable. The presence or absence of the father’s curse is revealed as one of the main factors determining the fate of all the characters of the story.

scholarly journals Study of Natural Hazards in the Upper Part of the Mapocho River Basin, Metropolitan Region of Chile, Using Satellite Imagery

Proceedings ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 4
Author(s):  
Pérez-Martínez ◽  
Pardo-Pascual ◽  
Briceño ◽  
Vidal
Keyword(s):  
Natural Hazards ◽  
River Basin ◽  
Satellite Imagery ◽  
Landslide Susceptibility ◽  
Seismic Activity ◽  
Metropolitan Region ◽  
Mountainous Region ◽  
Central Chile ◽  
Main Factors ◽  
High Degree

The upper section of the Mapocho river basin is in constant danger of landslides. This study had the objective of zoning the upper Mapocho river basin for the susceptibility of landslides using hydrological, geological, and geomorphological data. Areas with a high degree of landslide susceptibility are located on the lower part of the main valleys as well as at the headwaters of the basins. Landslide events in the mountainous region of Central Chile are caused by two main factors: intense precipitation and seismic activity.

scholarly journals The Father’s Curse in Fyodor Dostoevsky’s Novel The Humiliated and the Insulted

2021 ◽  
pp. 172-179
Author(s):  
Daria G. Shervarly
Keyword(s):  
The Other ◽  
The Novel ◽  
Prodigal Son ◽  
Significant Difference ◽  
Main Factors ◽  
The One ◽  
High Degree ◽  
Proper Behavior

One of the significant themes of the novel The Humiliated and the Insulted is the father’s curse, marked throughout the text by a high degree of emotionality. The novel describes two similar stories: the one of Nelly’s mother and Natasha’s. Both escaped from home, both were cursed by their fathers. However, there are also differences: while one father forgave, the other not. In the article, the theme of the father’s curse is revealed by comparing these two stories with the famous parable of the prodigal son, with which the novel presents visible parallels. The parable is presented as a standard for proper behavior, and in its comparison, we can say how the hero should have behaved and how he did in the novel. While the images of “prodigal children” recall each other, it is the behavior of parents that draws a significant difference between Dostoevsky’s plot and the parable. The presence or absence of the father’s curse is revealed as one of the main factors determining the fate of all the characters of the story.

Tissue section lifting for electron microscopy

1978 ◽  
Vol 36 (2) ◽  
pp. 86-87
Author(s):  
Adrian F. van Dellen
Keyword(s):  
Infectious Disease ◽  
Electron Microscopy ◽  
Tissue Culture ◽  
Organ System ◽  
Surrounding Tissue ◽  
Paraffin Sections ◽  
Surface Areas ◽  
Specific Determination ◽  
High Degree ◽  
Accuracy And Repeatability

The morphologic pathologist may require information on the ultrastructure of a non-specific lesion seen under the light microscope before he can make a specific determination. Such lesions, when caused by infectious disease agents, may be sparsely distributed in any organ system. Tissue culture systems, too, may only have widely dispersed foci suitable for ultrastructural study. In these situations, when only a few, small foci in large tissue areas are useful for electron microscopy, it is advantageous to employ a methodology which rapidly selects a single tissue focus that is expected to yield beneficial ultrastructural data from amongst the surrounding tissue. This is in essence what "LIFTING" accomplishes. We have developed LIFTING to a high degree of accuracy and repeatability utilizing the Microlift (Fig 1), and have successfully applied it to tissue culture monolayers, histologic paraffin sections, and tissue blocks with large surface areas that had been initially fixed for either light or electron microscopy.

Electron Microscopy in Molecular Biology

1967 ◽  
Vol 25 ◽  
pp. 2-3
Author(s):  
Cecil E. Hall
Keyword(s):  
Electron Microscopy ◽  
Molecular Biology ◽  
Noise Level ◽  
Molecular Structures ◽  
Material Structure ◽  
The Arts ◽  
Shadow Casting ◽  
Electron Image ◽  
High Degree ◽  
Very High

The visualization of organic macromolecules such as proteins, nucleic acids, viruses and virus components has reached its high degree of effectiveness owing to refinements and reliability of instruments and to the invention of methods for enhancing the structure of these materials within the electron image. The latter techniques have been most important because what can be seen depends upon the molecular and atomic character of the object as modified which is rarely evident in the pristine material. Structure may thus be displayed by the arts of positive and negative staining, shadow casting, replication and other techniques. Enhancement of contrast, which delineates bounds of isolated macromolecules has been effected progressively over the years as illustrated in Figs. 1, 2, 3 and 4 by these methods. We now look to the future wondering what other visions are waiting to be seen. The instrument designers will need to exact from the arts of fabrication the performance that theory has prescribed as well as methods for phase and interference contrast with explorations of the potentialities of very high and very low voltages. Chemistry must play an increasingly important part in future progress by providing specific stain molecules of high visibility, substrates of vanishing “noise” level and means for preservation of molecular structures that usually exist in a solvated condition.

A High Angle, Double Tilting Cold Stage for the AEI EM7

1974 ◽  
Vol 32 ◽  
pp. 450-451
Author(s):  
P.R. Swann ◽  
A.E. Lloyd
Keyword(s):  
Habit Plane ◽  
Temperature Control ◽  
Tilt Angle ◽  
Cooling System ◽  
Thermal Drift ◽  
High Angle ◽  
Cold Stage ◽  
High Degree ◽  
Better Than

Figure 1 shows the design of a specimen stage used for the in situ observation of phase transformations in the temperature range between ambient and −160°C. The design has the following features a high degree of specimen stability during tilting linear tilt actuation about two orthogonal axes for accurate control of tilt angle read-out high angle tilt range for stereo work and habit plane determination simple, robust construction temperature control of better than ±0.5°C minimum thermal drift and transmission of vibration from the cooling system.

New Aspects in the Design of Electron Optical Magnification Systems

1972 ◽  
Vol 30 ◽  
pp. 606-607
Author(s):  
Willem H.J. Andersen
Keyword(s):  
Electron Microscope ◽  
Imaging System ◽  
Chromatic Aberration ◽  
Research Tool ◽  
Energy Losses ◽  
Objective Lens ◽  
Theoretical Limit ◽  
Optical Magnification ◽  
Chromatic Aberrations ◽  
High Degree

Electron microscope design, and particularly the design of the imaging system, has reached a high degree of perfection. Present objective lenses perform up to their theoretical limit, while the whole imaging system, consisting of three or four lenses, provides very wide ranges of magnification and diffraction camera length with virtually no distortion of the image. Evolution of the electron microscope in to a routine research tool in which objects of steadily increasing thickness are investigated, has made it necessary for the designer to pay special attention to the chromatic aberrations of the magnification system (as distinct from the chromatic aberration of the objective lens). These chromatic aberrations cause edge un-sharpness of the image due to electrons which have suffered energy losses in the object.There exist two kinds of chromatic aberration of the magnification system; the chromatic change of magnification, characterized by the coefficient Cm, and the chromatic change of rotation given by Cp.

Cytoplasmic Organization in the Receptor Cells of the Crista Ampullaris

1972 ◽  
Vol 30 ◽  
pp. 60-61 ◽  
Author(s):  
Robert F. Dunn
Keyword(s):  
Fine Particles ◽  
Apical Cell ◽  
Apical Region ◽  
Receptor Cells ◽  
Cuticular Plate ◽  
Morphological Organization ◽  
Crista Ampullaris ◽  
Cytoplasmic Organization ◽  
High Degree ◽  
General Appearance

Receptor cells of the cristae in the vestibular labyrinth of the bullfrog, Rana catesbiana, show a high degree of morphological organization. Four specialized regions may be distinguished: the apical region, the supranuclear region, the paranuclear region, and the basilar region.The apical region includes a single kinocilium, approximately 40 stereocilia, and many small microvilli all projecting from the apical cell surface into the lumen of the ampulla. A cuticular plate, located at the base of the stereocilia, contains filamentous attachments of the stereocilia, and has the general appearance of a homogeneous aggregation of fine particles (Fig. 1). An accumulation of mitochondria is located within the cytoplasm basal to the cuticular plate.

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