scholarly journals Initial data from monitoring of a landslide process affecting Emine Cape, Bulgaria

2021 ◽  
Vol 82 (3) ◽  
pp. 216-218
Author(s):  
Nikolai Dobrev ◽  
Plamen Ivanov ◽  
Miroslav Krastanov ◽  
Antoaneta Frantzova
Keyword(s):  
Initial Data ◽  
Lateral Pressure ◽  
Landslide Process ◽  
Two Stages ◽  
Slow Landslide

In October 2019, a 3D extensometer was installed to monitor slow landslide movements, affecting the slope of Cape Emine north of the lighthouse. For almost 2 years of observations, a tendency of shrinkage of the zone as a result of lateral pressure from the southern landslide was established. The movements are divided into two stages: the first – until December 2020, and the second – after that date. In the months from April to June the movements in direction X are more intensive due to the rainy situation at this time of the year.

scholarly journals DECISION-MAKING BASED ON THE RECEPTOR-LIGAND INTERACTION METHODS

2021 ◽  
Vol 3 (65) ◽  
pp. 4-18
Author(s):  
Aleksandr K. Ivanov ◽  
◽  
Aleksandr L. Savkin ◽  
Dmitriy M. Yastrebov ◽  
Sergey S. Shumilov ◽  
...  
Keyword(s):  
Decision Making ◽  
Initial Data ◽  
Mathematical Models ◽  
Riccati Equation ◽  
Special Form ◽  
Ligand Interaction ◽  
Receptor Ligand ◽  
Knowledge Database ◽  
The One ◽  
Two Stages

The article deals with the mathematical models of decision-making in the management organization systems. The models are based on the receptor-ligand interaction methods studied in the biokinetics. The article describes an interaction between initial data coming to the organization system and knowledge database generated on the basis of operation experience. The combination of matching pairs creates decisions for resolving problems and achieving the goals. The interaction may take one or more stages. For one stage the models were developed in the form of differential equations when the starting amount of data is not equal to the one in knowledge database. When the amounts are equal, the model is represented as Riccati equation in a special form solving by an indefinite coefficient. The article considers cases when information recourses of initial data and the ones of knowledge database are not uniquely defined. The similar models are developed for two stages of interaction. The article gives the examples of calculation of information recourses amount for a decision in case of different ratios of initial data/ knowledge database.

Methods of forecasting technical and economic processes and the possibility of improving them

2019 ◽  
pp. 70-74
Author(s):  
K. V. Ryzhakov ◽  
I. M. Portnova
Keyword(s):  
Initial Data ◽  
Least Squares ◽  
Fuzzy Sets ◽  
Iterative Process ◽  
Statistical Data ◽  
Least Squares Method ◽  
Growth Models ◽  
Time Parameter ◽  
Engineering Applications ◽  
Two Stages

The article provides a brief overview of the methods for forecasting technical and economic processes, reveals their features. A method for estimating the parameters of models with a varying value of the degree of time is proposed, which can be used to implement the method of growth models and the method based on representations of fuzzy sets. The features of methods based on growth models are considered. The simplest methods are compared, the implementation of which can be represented in the form of the following steps: 1) a curve is selected heuristically (expertly), smoothing the initial statistical data and extrapolating to their perspective, while the degrees of the terms of the model are chosen constant; 2) the parameters of the models are estimated, most often by the least squares method; 3) the adequacy of the model by the initial data and the value of the predicted parameter are evaluated. As analysis has shown, the first two stages are decisive in the process of increasing the accuracy of the forecast, and therefore it is advisable to improve them. To do this, it is proposed to use an iterative process, which allows you to simultaneously vary the coefficients at various degrees of the time parameter, as well as its degree. The iterative process is presented in detail by analytical calculations that are convenient in engineering applications.

Altered Fine Structure of B Lymphocytes Correlated with Defective Terminal Differentiation

1973 ◽  
Vol 31 ◽  
pp. 386-387
Author(s):  
Dale E. Bockman ◽  
L. Y. Frank Wu ◽  
Alexander R. Lawton ◽  
Max D. Cooper
Keyword(s):  
Immune Deficiency ◽  
B Lymphocytes ◽  
Plasma Cells ◽  
Present Report ◽  
Specific Antigen ◽  
Terminal Differentiation ◽  
Second Stage ◽  
Two Stages ◽  
Deficiency Diseases ◽  
Cell Line Generation

B-lymphocytes normally synthesize small amounts of immunoglobulin, some of which is incorporated into the cell membrane where it serves as receptor of antigen. These cells, on contact with specific antigen, proliferate and differentiate to plasma cells which synthesize and secrete large quantities of immunoglobulin. The two stages of differentiation of this cell line (generation of B-lymphocytes and antigen-driven maturation to plasma cells) are clearly separable during ontogeny and in some immune deficiency diseases. The present report describes morphologic aberrations of B-lymphocytes in two diseases in which second stage differentiation is defective.

Formation of Dislocation Channels in Neutron Irradiated Molybdenum

1972 ◽  
Vol 30 ◽  
pp. 672-673
Author(s):  
S. Mahajan
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ambient Temperature ◽  
Room Temperature ◽  
Channel Formation ◽  
Early Stages ◽  
Transmission Electron ◽  
Three Stages ◽  
Two Stages ◽  
Polycrystalline Molybdenum

The evolution of dislocation channels in irradiated metals during deformation can be envisaged to occur in three stages: (i) formation of embryonic cluster free regions, (ii) growth of these regions into microscopically observable channels and (iii) termination of their growth due to the accumulation of dislocation damage. The first two stages are particularly intriguing, and we have attempted to follow the early stages of channel formation in polycrystalline molybdenum, irradiated to 5×1019 n. cm−2 (E > 1 Mev) at the reactor ambient temperature (∼ 60°C), using transmission electron microscopy. The irradiated samples were strained, at room temperature, up to the macroscopic yield point.Figure 1 illustrates the early stages of channel formation. The observations suggest that the cluster free regions, such as A, B and C, form in isolated packets, which could subsequently link-up to evolve a channel.

Remarks on nonlinear elastic waves with null conditions

2020 ◽  
Vol 26 ◽  
pp. 121
Author(s):  
Dongbing Zha ◽  
Weimin Peng
Keyword(s):  
Initial Data ◽  
Global Existence ◽  
Elastic Waves ◽  
Wave Equations ◽  
Alternative Proof ◽  
Classical Solutions ◽  
Small Initial Data ◽  
Hyperelastic Materials ◽  
Variational Structure ◽  
Nonlinear Elastic

For the Cauchy problem of nonlinear elastic wave equations for 3D isotropic, homogeneous and hyperelastic materials with null conditions, global existence of classical solutions with small initial data was proved in R. Agemi (Invent. Math. 142 (2000) 225–250) and T. C. Sideris (Ann. Math. 151 (2000) 849–874) independently. In this paper, we will give some remarks and an alternative proof for it. First, we give the explicit variational structure of nonlinear elastic waves. Thus we can identify whether materials satisfy the null condition by checking the stored energy function directly. Furthermore, by some careful analyses on the nonlinear structure, we show that the Helmholtz projection, which is usually considered to be ill-suited for nonlinear analysis, can be in fact used to show the global existence result. We also improve the amount of Sobolev regularity of initial data, which seems optimal in the framework of classical solutions.

Assessment of Questions and Questionaries

1971 ◽  
Vol 10 (04) ◽  
pp. 222-228 ◽  
Author(s):  
D. W. YOUNG
Keyword(s):  
Two Stages ◽  
The Way

A method is presented for the evaluation of. both individual questions and whole questionaries. The method involves two stages, administering the questions and later an interview at which the questions are reasked and the answers checked. It is suggested that questions can be described by means of nine properties and that questionaries can be described by means of these same nine properties plus two others. A set of indices representing these properties is derived from the evaluation of a particular set of questions. The way certain indices are selected for different purposes is discussed.

Interference mitigation in point to point wireless sensor networks using LSP protocol and time division multiplexing approach

2020 ◽  
Vol 39 (4) ◽  
pp. 5449-5458
Author(s):  
A. Arokiaraj Jovith ◽  
S.V. Kasmir Raja ◽  
A. Razia Sulthana
Keyword(s):  
Energy Consumption ◽  
Large Scale ◽  
Control Parameter ◽  
Interference Mitigation ◽  
Wireless Sensor ◽  
Point To Point ◽  
A Minor ◽  
Two Stages ◽  
Time Division ◽  
And Control

Interference in Wireless Sensor Network (WSN) predominantly affects the performance of the WSN. Energy consumption in WSN is one of the greatest concerns in the current generation. This work presents an approach for interference measurement and interference mitigation in point to point network. The nodes are distributed in the network and interference is measured by grouping the nodes in the region of a specific diameter. Hence this approach is scalable and isextended to large scale WSN. Interference is measured in two stages. In the first stage, interference is overcome by allocating time slots to the node stations in Time Division Multiple Access (TDMA) fashion. The node area is split into larger regions and smaller regions. The time slots are allocated to smaller regions in TDMA fashion. A TDMA based time slot allocation algorithm is proposed in this paper to enable reuse of timeslots with minimal interference between smaller regions. In the second stage, the network density and control parameter is introduced to reduce interference in a minor level within smaller node regions. The algorithm issimulated and the system is tested with varying control parameter. The node-level interference and the energy dissipation at nodes are captured by varying the node density of the network. The results indicate that the proposed approach measures the interference and mitigates with minimal energy consumption at nodes and with less overhead transmission.

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