Research and analysis of methods of accounting for harvested wood in Russia and foreign countries

2015 ◽  
Vol 5 (4) ◽  
pp. 103-114 ◽  
Author(s):  
Стариков ◽  
Aleksandr Starikov ◽  
Батурин ◽  
Kirill Baturin
Keyword(s):  
Geometrical Parameters ◽  
Foreign Countries ◽  
Single Piece ◽  
Group Methods ◽  
Means Of Measurement ◽  
Highly Skilled ◽  
Weighting Methods

The analysis revealed that except for minor differences, both in Russia and in foreign countries, ap-ply a piece and group methods of accounting for harvested wood. The main methods are the method of single-piece end sections, sectional method, accounting method wood top diameter and run, refer to group stacking and weighting methods. To improve the accuracy of determining the volume of wood required highly skilled employees, and the use of modern automated means of measurement of geometrical parameters of timber materials.

Brain Drain: Economic and Social Sufferings for Bangladesh

2014 ◽  
Vol 1 (1) ◽  
pp. 9-17 ◽  
Author(s):  
Abu Md. Abdullah
Keyword(s):  
Brain Drain ◽  
Science And Technology ◽  
Health Sector ◽  
Real Life ◽  
Developed Countries ◽  
Least Developed Countries ◽  
Skilled Immigrants ◽  
Foreign Countries ◽  
Highly Skilled

This paper presents the alarming issue of brain drain with the causes that are responsible for the migration of academics, doctors and engineers from Bangladesh to developed countries. Bangladesh being one of the least developed countries needs its talents to stay to contribute to the development. But majority of these highly skilled immigrants do not come back after completing their study or training and start living in the foreign countries. Lack of opportunity, higher standard and insecurity are some reasons behind their immigrations. After exploring the causes, the paper also examines the suffering of Bangladesh in want of native talent. Some real life cases have been obtained through interview which are analyzed and presented through charts. The suffering goes bigger in the health sector, education and science and technology. The loss of Bangladesh and ways to reduce this is the key concern of this research.  

Effects of predictor weighting methods on incremental validity.

2017 ◽  
Vol 102 (10) ◽  
pp. 1421-1434 ◽  
Author(s):  
Paul R. Sackett ◽  
Jeffrey A. Dahlke ◽  
Oren R. Shewach ◽  
Nathan R. Kuncel
Keyword(s):  
Incremental Validity ◽  
Weighting Methods

Bulk drag coefficient of a subaquatic vegetation subjected to irregular waves: Influence of Reynolds and Keulegan-Carpenter numbers

2020 ◽  
pp. 34-42
Author(s):  
Thibault Chastel ◽  
Kevin Botten ◽  
Nathalie Durand ◽  
Nicole Goutal
Keyword(s):  
Drag Coefficient ◽  
Wave Height ◽  
Wave Attenuation ◽  
Empirical Relationship ◽  
Breaking Waves ◽  
Irregular Waves ◽  
Geometrical Parameters ◽  
Flume Experiments ◽  
Seagrass Meadows ◽  
Artificial Vegetation

Seagrass meadows are essential for protection of coastal erosion by damping wave and stabilizing the seabed. Seagrass are considered as a source of water resistance which modifies strongly the wave dynamics. As a part of EDF R & D seagrass restoration project in the Berre lagoon, we quantify the wave attenuation due to artificial vegetation distributed in a flume. Experiments have been conducted at Saint-Venant Hydraulics Laboratory wave flume (Chatou, France). We measure the wave damping with 13 resistive waves gauges along a distance L = 22.5 m for the “low” density and L = 12.15 m for the “high” density of vegetation mimics. A JONSWAP spectrum is used for the generation of irregular waves with significant wave height Hs ranging from 0.10 to 0.23 m and peak period Tp ranging from 1 to 3 s. Artificial vegetation is a model of Posidonia oceanica seagrass species represented by slightly flexible polypropylene shoots with 8 artificial leaves of 0.28 and 0.16 m height. Different hydrodynamics conditions (Hs, Tp, water depth hw) and geometrical parameters (submergence ratio α, shoot density N) have been tested to see their influence on wave attenuation. For a high submergence ratio (typically 0.7), the wave attenuation can reach 67% of the incident wave height whereas for a low submergence ratio (< 0.2) the wave attenuation is negligible. From each experiment, a bulk drag coefficient has been extracted following the energy dissipation model for irregular non-breaking waves developed by Mendez and Losada (2004). This model, based on the assumption that the energy loss over the species meadow is essentially due to the drag force, takes into account both wave and vegetation parameter. Finally, we found an empirical relationship for Cd depending on 2 dimensionless parameters: the Reynolds and Keulegan-Carpenter numbers. These relationships are compared with other similar studies.

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