Technique for determining the optimal load capacity of sowing units

10.12737/6296 ◽  
2014 ◽  
Vol 4 (3) ◽  
pp. 237-245
Author(s):  
Тертычная ◽  
Tatyana Tertychnaya ◽  
Бровченко ◽  
Aleksey Brovchenko ◽  
Дьячков ◽  
...  
Keyword(s):  
Labor Productivity ◽  
Soil Compaction ◽  
Load Capacity ◽  
Normal Stresses ◽  
Optimum Load ◽  
Factors Influencing ◽  
Optimal Load ◽  
The Impact

The technique of determining the optimum load capacity of bunkers of towingdriven distribution units on the example of seeding ma-chines is presented. The factors influencing the increase in labor productivity are considered, and it is determined that it is necessary to in-crease the power and weight of the unit for this. A review of studies on the impact of running systems of modern mobile units showed that soil compaction by movers exceeds current GOST 26955-86 of established norms of maximum pressures of propellers of mobile units and the maximum normal stresses in the soil at a depth of 0.5 m.

Determining the optimal load capacities units of forestry rolling stock

2015 ◽  
Vol 5 (4) ◽  
pp. 97-102
Author(s):  
Макеев ◽  
Viktor Makeev
Keyword(s):  
Load Capacity ◽  
Scientific Paper ◽  
Rolling Stock ◽  
Optimum Load ◽  
Optimal Load ◽  
Load Unit ◽  
Time Optimal ◽  
The Cost ◽  
Cost Of Transportation

Improving the efficiency of freight transport and industrial processes of forest complex is of great importance in the production activities of its business depends on many factors. The most important factor is the choice of the type operated by forestry staff and capacity of its units. In a scientific paper delivered and successfully solved the problem of determining the optimum load capacity of rolling stock unit forestry given distance transportation of timber cargo and average technical speed of vehicles in the transportation of timber cargo. At the same time optimal load unit Forestry rolling stock is determined by the conditions at the lowest cost to transport certain types of timber cargo and operational performance logging train (short log). The formula determining the cost of transportation of one ton (1 m3) timber cargo, which was the basis for the determination of the optimum load capacity of logging trucks. For greater clarity of how the optimal load on the logging train hauling timber (timber assortments) of the distance transportation, ways to perform loading and unloading operations and technical speed on the example of existing timber companies (Kulikovskii forestry) built a graph.

How to Psychologically Minimize Scratching Impulses

2014 ◽  
Vol 222 (3) ◽  
pp. 140-147 ◽  
Author(s):  
Ariane Sölle ◽  
Theresa Bartholomäus ◽  
Margitta Worm ◽  
Regine Klinger
Keyword(s):  
Cognitive Processes ◽  
Placebo Effect ◽  
Psychological Factors ◽  
Pharmacological Treatments ◽  
Physiological Basis ◽  
Psychological Mechanisms ◽  
Physical Complaints ◽  
Factors Influencing ◽  
The Impact ◽  
Placebo Model

Research in recent years, especially in the analgesic field, has intensively studied the placebo effect and its mechanisms. It has been shown that physical complaints can be efficiently reduced via learning and cognitive processes (conditioning and expectancies). However, despite evidence demonstrating a large variety of physiological similarities between pain and itch, the possible transfer of the analgesic placebo model to itch has not yet been widely discussed in research. This review therefore aims at highlighting potential transfers of placebo mechanisms to itch processes by demonstrating the therapeutic issues in pharmacological treatments for pruritus on a physiological basis and by discussing the impact of psychological mechanisms and psychological factors influencing itch sensations.

The Impact of Heat Waves on Agricultural Labor Productivity and Output

2021 ◽  
pp. 11-20
Author(s):  
Federico Castillo ◽  
Armando Sánchez Vargas ◽  
J. K. Gilless ◽  
Michael Wehner
Keyword(s):  
Labor Productivity ◽  
Heat Waves ◽  
Agricultural Labor ◽  
Agricultural Labor Productivity ◽  
The Impact

scholarly journals Modelling natural regeneration of European beech in Saxony, Germany: identifying factors influencing the occurrence and density of regeneration

2021 ◽  
Author(s):  
Maximilian Axer ◽  
Sven Martens ◽  
Robert Schlicht ◽  
Sven Wagner
Keyword(s):  
Natural Regeneration ◽  
Negative Binomial ◽  
European Beech ◽  
Seed Source ◽  
Permanent Plots ◽  
Forest Conversion ◽  
Ecological Knowledge ◽  
Statistical Tool ◽  
Factors Influencing ◽  
The Impact

AbstractThe potential utilisation of natural regeneration of European beech (Fagus sylvatica L.) for forest conversion has received little attention to date. Ecological knowledge is necessary to understand and predict successful natural regeneration of beech. The objective of this study was to improve understanding of what drives the occurrence of beech regeneration and, once regeneration is present, what drives its density. In the study, we utilised a forest inventory dataset provided by Sachsenforst, the state forestry service of Saxony, Germany. The dataset was derived from 8725 permanent plots. Zero-altered negative binomial models (ZANB) with spatial random effects were used to analyse factors influencing occurrence and density simultaneously. The results provided by the spatial ZANB models revealed that the probability of the occurrence of beech regeneration is highly dependent on seed availability, i.e. dependent on source trees in close proximity to a plot. The probability of beech regeneration rises with the increasing diameter of a potential seed tree and decreases with increasing distance to the nearest potential seed source. The occurrence of regeneration is affected by overstorey composition and competition exerted by spruce regeneration. Where sites are affected by groundwater or temporary waterlogging, the impact on the occurrence of regeneration is negative. Although distance to the nearest potential seed source has an influence on occurrence, this variable exerts no influence on density. A high regeneration density arises in conjunction with a high beech basal area in the overstorey. Beech regeneration density, but not occurrence, is negatively affected by browsing intensity. These variables can be used to predict the occurrence and density of beech regeneration in space to a high level of precision. The established statistical tool can be used for decision-making when planning forest conversion using natural regeneration.

scholarly journals Study on Companies from the Energy Sector from the Perspective of Performance through the Operating Cash Flow

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3667
Author(s):  
Claudia Diana Sabău-Popa ◽  
Luminița Rus ◽  
Dana Simona Gherai ◽  
Codruța Mare ◽  
Ioan Gheorghe Țara
Keyword(s):  
Labor Productivity ◽  
Cash Flow ◽  
Stock Exchange ◽  
Average Duration ◽  
Significant Negative Correlation ◽  
Cash Flows ◽  
Energy Sector ◽  
Or Management ◽  
Operating Cash Flow ◽  
The Impact

In this paper we analyzed the link between companies’ performance, in terms of cash and income, and the labor productivity or management rates, in case of the companies from the energy sector listed on the Bucharest Stock Exchange. We focused on the energy sector because of the impact that its expansion has on the evolution of economies around the world and because of its dynamics in the sense of gradually shifting to the use of energy from renewable sources. We have used panel regression models to analyze the operating cash flow and the profitability rates and the determination of a causal or dependency relationship with labor productivity or management rates. The results of this study show a significant negative correlation between operating cash flows and the average duration of stock rotation, and no correlation between productivity and the operating cash flow. Instead, the average duration of stock turnover does not at all influence the profitability rates, and productivity is always significant for the return on assets, ie forthe return on equitywith a positive coefficient, as expected. The gap between the average duration of payment of suppliers and the average duration of receivables does not significantly influence neither the cash flow nor the rates of return.

scholarly journals Individual Condensation Trails in Aircraft Trajectory Optimization

2019 ◽  
Vol 11 (21) ◽  
pp. 6082 ◽  
Author(s):  
Judith Rosenow ◽  
Hartmut Fricke
Keyword(s):  
Global Warming ◽  
Trajectory Optimization ◽  
Wind Shear ◽  
Impact Factors ◽  
Factors Influencing ◽  
Order Of Magnitude ◽  
Aircraft Trajectory ◽  
The Impact ◽  
Arbitrary Trajectory ◽  
Significant Factors

Contrails are one of the driving contributors to global warming, induced by aviation. The quantification of the impact of contrails on global warming is nontrivial and requires further in-depth investigation. In detail, condensation trails might even change the algebraic sign between a cooling and a warming effect in an order of magnitude, which is comparable to the impact of aviation-emitted carbon dioxides and nitrogen oxides. This implies the necessity to granularly consider the environmental impact of condensation trails in single-trajectory optimization tools. The intent of this study is the elaboration of all significant factors influencing on the net effect of single condensation trails. Possible simplifications will be proposed for a consideration in single-trajectory optimization tools. Finally, the effects of the most important impact factors, such as latitude, time of the year, and time of the day, wind shear, and atmospheric turbulence as well as their consideration in a multi-criteria trajectory optimization tool are exemplified. The results can be used for an arbitrary trajectory optimization tool with environmental optimization intents.

Dependency of Machine Efficiency on the Thermal Behavior of Induction Machines

Machines ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 9
Author(s):  
Svenja Kalt ◽  
Karl Ludwig Stolle ◽  
Philipp Neuhaus ◽  
Thomas Herrmann ◽  
Alexander Koch ◽  
...  
Keyword(s):  
Thermal Behavior ◽  
Electric Vehicles ◽  
Thermal Load ◽  
Load Capacity ◽  
Maximum Load ◽  
Induction Machines ◽  
Electric Machines ◽  
Model Parameters ◽  
Dynamic Operating ◽  
The Impact

The consideration of the thermal behavior of electric machines is becoming increasingly important in the machine design for electric vehicles due to the adaptation to more dynamic operating points compared to stationary applications. Whereas, the dependency of machine efficiency on thermal behavior is caused due to the impact of temperature on the resulting loss types. This leads to a shift of efficiency areas in the efficiency diagram of electric machines and has a significant impact on the maximum load capability and an impact on the cycle efficiency during operation, resulting in a reduction in the overall range of the electric vehicle. Therefore, this article aims at analyzing the thermal load limits of induction machines in regard to actual operation using measured driving data of battery electric vehicles. For this, a thermal model is implemented using MATLAB® and investigations to the sensitivity of model parameters as well as analysis of the continuous load capacity, thermal load and efficiency in driving cycles under changing boundary conditions are conducted.

scholarly journals Effects of temperature and impactor nose diameter on the impact behavior of PA6 and PP thermoplastic composites

2018 ◽  
Vol 51 (1) ◽  
pp. 64-74 ◽  
Author(s):  
Akar Dogan ◽  
Yusuf Arman
Keyword(s):  
Load Capacity ◽  
Testing Machine ◽  
Polyamide 6 ◽  
Impact Testing ◽  
Impact Behavior ◽  
Thermoplastic Composites ◽  
Test Machine ◽  
Effects Of Temperature ◽  
Impact Energies ◽  
The Impact

In this study, the effects of temperature and impactor nose diameter on the impact behavior of woven glass-reinforced polyamide 6 (PA6) and polypropylene (PP) thermoplastic composites were investigated experimentally. Impact energies are chosen as 10, 30, 50, 70, 90, 110, 130, and 170 J. The thickness of composite materials is 4 mm. Impact tests were performed using a drop weight impact testing machine, CEAST-Fractovis Plus, and the load capacity of test machine is 22 kN. Hemispherical impactor nose diameter of 12, 7, and 20 mm were used as an impactor. The tests are conducted at room temperature (20°C and 75°C). As a result, the PP composites of the same thickness absorbed more energy than PA6 composites. The amount of absorbed energy of PP and PA6 composites decreased with temperature.

The Impact of the SAGE & THYME Foundation Level Workshop on Factors Influencing Communication Skills in Health Care Professionals

2014 ◽  
Vol 34 (1) ◽  
pp. 37-46 ◽  
Author(s):  
Michael Connolly ◽  
Joanne M. Thomas ◽  
Julie A. Orford ◽  
Nicola Schofield ◽  
Sigrid Whiteside ◽  
...  
Keyword(s):  
Health Care ◽  
Communication Skills ◽  
Health Care Professionals ◽  
Factors Influencing ◽  
The Impact
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