scholarly journals The economic and technological efciency of building producton in view of contemporary industrial building materials

2018 ◽  
Vol 196 ◽  
pp. 04074 ◽  
Author(s):  
Konstantin Tsapko
Keyword(s):  
Building Materials ◽  
Methodological Problem ◽  
Industrial Building ◽  
Risk And Uncertainty ◽  
Production Economic ◽  
Labor Resources ◽  
The Cost ◽  
Selection Of

Efficiency of construction production, economic category, expressing the achievement of construction and installation organizations the greatest result of production while minimizing the cost of material and labor resources. This publication examines the possibility of improving the efficiency of construction production through the use of innovative building materials and methods of their application. The methodological problem of the use of building materials, their choice depending on the long-term economic prospects. The questions of risk and uncertainty in the selection of effective building materials are considered.

Industrial construction. Buildings and constructions. Corrosion protection and ecology

2020 ◽  
Author(s):  
Aleksey Zhukov ◽  
Vladimir Astashkin ◽  
Vil'en Zholudov ◽  
Vyacheslav Semenov
Keyword(s):  
Corrosion Protection ◽  
Building Materials ◽  
Training System ◽  
Industrial Construction ◽  
Technical Schools ◽  
Industrial Buildings ◽  
Wide Range ◽  
Modern Experience ◽  
The Cost ◽  
Selection Of

This monograph summarizes the modern experience of protection of industrial buildings and structures against aggressive impacts are considered characteristic of corrosion processes under the action of liquid, solid and gaseous environments on the main building materials. Provides a system of regulating the degree of aggressiveness for different parts of buildings and constructions basic provisions for the selection of chemically resistant structures and materials, design methodology section corrosion protection. Systematic design methods of protecting groundwater and soil against aggressive and toxic media, the methods of accounting for the cost of corrosion protection as applied to building elements. Designed for a wide range of engineering-technical workers (ITR), related to design, construction and exploitation of constructions and structures. Can also be used as a textbook for technical schools, colleges and training system engineers.

scholarly journals Predictive model of the dependence of the cost of insulation on thermal characteristics

2019 ◽  
Vol 140 ◽  
pp. 04018
Author(s):  
Olga Gamayunova ◽  
Anton Radaev ◽  
Mikhail Petrichenko ◽  
Raimond Bogdanivics
Keyword(s):  
Thermal Conductivity ◽  
Mathematical Model ◽  
Predictive Model ◽  
Building Materials ◽  
Thermal Characteristics ◽  
Average Density ◽  
Coefficient Of Determination ◽  
The Cost ◽  
Selection Of

In the market of building materials today there is a large selection of various thermal insulation materials, differing in cost, thermal conductivity and other characteristics. This article describes the predictive model of the cost of insulation from thermal characteristics, such as: thickness, thermal conductivity, (average) density, water absorption and combustibility group. The coefficient of determination was used to assess the quality of the obtained economic-mathematical model. The described predictive model can be effectively used to solve problems associated with determining the optimal characteristics of insulation by the criterion of minimizing cost.

scholarly journals Bunch and ratoon management for profitable production of high quality bananas (Musa acuminata, AAA)

1969 ◽  
Vol 76 (3-4) ◽  
pp. 119-130
Author(s):  
Héber Irizarry ◽  
Edmundo Rivera ◽  
José A. Rodríguez
Keyword(s):  
Total Yield ◽  
Maximum Yield ◽  
Musa Acuminata ◽  
High Quality ◽  
Net Profit ◽  
Polyethylene Bags ◽  
The Cost ◽  
Production Period ◽  
Selection Of

Two long-term banana experiments were conducted to determine the effect of bunch bagging, removal of lower hands, and sucker management on fruit and bunch characteristics and total yield. Bunches covered with either Dursban-treated or untreated perforated polyethylene bags yielded 10,539 kg/ha more than the uncovered ones during a 40-month production period. Considering the price that quality bananas demand at the farm gate and the cost of bagging (materials and labor), this practice represents a net profit of $3,329.25/ha. The removal of the three lower hands from the immature racemes significantly reduced bunch mean weight and total yield. However, both removal of lower hands and bunch bagging increased size of individual fruits in the distal hand, thus up-grading fruit quality. In addition, these practices also reduced the number of days required from bunch-shooting to harvest. The selection of a vigorous "sword" sucker soon after planting, combined with repeated pruning of other competing suckers produced the maximum yield of 183,744 kg/ha during a 40-month period.

Brief analysis of the provision of agricultural machinery to agricultural enterprises of the Republic of Belarus

2021 ◽  
pp. 29-38
Author(s):  
I. L. Kovalev ◽  
A. A. Efremov
Keyword(s):  
Agricultural Production ◽  
High Performance ◽  
High Tech ◽  
Agricultural Enterprises ◽  
Material Resources ◽  
The Republic ◽  
Labor Resources ◽  
The Cost ◽  
Agricultural Tractor

Long-term foreign and domestic experience in agricultural production proves that the intensification of agricultural production, an increase in its efficiency and volumes, an increase in the competitiveness of agricultural products, is impossible without constant modernization of the production and technical base and the introduction of the most modern achievements of scientific and technological progress. Only a comprehensive and systematic technical and technological reequipment of agricultural production, saturation of it with high-tech, high-performance complexes, machines, equipment can provide a significant increase in labor productivity, minimize the cost of all types of material resources with a steady trend of constantly decreasing labor resources in agricultural production. The analysis of indicators of provision with the main types of machines of domestic agricultural enterprises in comparison with different countries of the world is carried out. The article presents the results of the analysis of the most important segments of the agricultural tractor and combine park of the Republic of Belarus.

Research on the Technology of Service Pricing Optimization Strategy for Mobile Communication Enterprise

2015 ◽  
Vol 713-715 ◽  
pp. 1427-1430
Author(s):  
Ping Zhang
Keyword(s):  
Mobile Communication ◽  
Mobile Communications ◽  
Pricing Strategy ◽  
Mobile Service ◽  
Optimization Strategy ◽  
Service Pricing ◽  
The Cost ◽  
Pricing Optimization ◽  
Selection Of

Price is the main competition means in China's mobile communications market, scientific pricing methods and strategies are important issues must be resolved by operators. Meanwhile, the pricing strategy selection of service product is an important decision factor in mobile communication business marketing. Based on this, this paper through analyzing on the cost-plus pricing strategy, competition-oriented pricing strategy and customer-oriented pricing strategy, consider mobile communication enterprise pricing strategy should be selected according to their own environment and the different stages of the mobile service growth, so that pricing is more in line with the subjective wishes of the client, and favorable for long-term interests of the enterprise.

scholarly journals Rapid Attentional Selection of Non-native Stimuli despite Perceptual Narrowing

2015 ◽  
Vol 27 (11) ◽  
pp. 2299-2307 ◽  
Author(s):  
Rachel Wu ◽  
Rebecca Nako ◽  
Jared Band ◽  
Jacquelyne Pizzuto ◽  
Yalda Ghoreishi ◽  
...  
Keyword(s):  
Response Selection ◽  
Attentional Selection ◽  
Behavioral Measures ◽  
Developmental Progression ◽  
Memory Representations ◽  
The Cost ◽  
Human Faces ◽  
Perceptual Narrowing ◽  
Selection Of

Visual experiences increase our ability to discriminate environmentally relevant stimuli (native stimuli, e.g., human faces) at the cost of a reduced sensitivity to irrelevant or infrequent stimuli (non-native stimuli, e.g., monkey/ape faces)—a developmental progression known as perceptual narrowing. One possible source of the reduced sensitivity in distinguishing non-native stimuli (e.g., one ape face vs. another ape face) could be underspecified attentional search templates (i.e., working memory representations). To determine whether perceptual narrowing stems from underspecified attentional templates for non-native exemplars, this study used ERP (the N2pc component) and behavioral measures in a visual search task, where the target was either an exemplar (e.g., a specific ape face) or a category (e.g., any ape face). The N2pc component, an ERP marker of early attentional selection emerging at 200 msec poststimulus, is typically modulated by the specificity of the target and, therefore, by the attentional template—the N2pc is larger for specific items versus categories. In two experiments using both human and ape faces (i.e., native and non-native stimuli), we found that perceptual narrowing affects later response selection (i.e., manual RT and accuracy), but not early attentional selection relying on attentional templates (i.e., the N2pc component). Our ERP results show that adults deploy exemplar level attentional templates for non-native stimuli (as well as native stimuli), despite poor downstream behavioral performance. Our findings suggest that long-term previous experience with reduced exemplar level judgments (i.e., perceptual narrowing) does not appear to eliminate early attentional selection of non-native exemplars.

Use of Akaike information criterion for selection of flood frequency distribution

1992 ◽  
Vol 19 (4) ◽  
pp. 616-626 ◽  
Author(s):  
K. C. Ander Chow ◽  
W. Edgar Watt
Keyword(s):  
Frequency Distribution ◽  
Goodness Of Fit ◽  
Information Criterion ◽  
Flood Frequency ◽  
Flood Frequency Analysis ◽  
Goodness Of Fit Tests ◽  
Single Station ◽  
The Cost ◽  
Selection Of

When conducting a conventional single-station flood frequency analysis, an appropriate distribution must be selected. Typically, sample statistics, probability plots, goodness-of-fit tests, etc. are used to facilitate the decision process. For the predominate case of a relatively short record length of flood series, this standard approach leads to undue emphasis on goodness of fit and virtually no consideration of the uncertainty due to additional parameters. The information criterion suggested by Akaike (AIC) is a measure to evaluate the "benefit" of goodness of fit and the "cost" of parameter uncertainty. The criterion is tested for 42 long-term hydrometric stations across Canada and its applicability and limitations are demonstrated in eight samples. The AIC is recommended as an aid in selecting a flood frequency distribution. Key words: flood frequency, goodness of fit, single station, information criterion.

Primary varicose veins

Phlebologie ◽  
2010 ◽  
Vol 39 (03) ◽  
pp. 133-137
Author(s):  
H. Partsch
Keyword(s):  
Varicose Veins ◽  
Compression Therapy ◽  
Daily Practice ◽  
Clinical Severity ◽  
Compression Stockings ◽  
Primary Varicose Veins ◽  
The Cost ◽  
Convincing Data ◽  
Long Term Studies

SummaryBackground: Compression stockings are widely used in patients with varicose veins. Methods: Based on published literature three main points are discussed: 1. the rationale of compression therapy in primary varicose veins, 2. the prescription of compression stockings in daily practice, 3. studies required in the future. Results: The main objective of prescribing compression stockings for patients with varicose veins is to improve subjective leg complaints and to prevent swelling after sitting and standing. No convincing data are available concerning prevention of progression or of complications. In daily practice varicose veins are the most common indication to prescribe compression stockings. The compliance depends on the severity of the disorder and is rather poor in less severe stages. Long-term studies are needed to proof the cost-effectiveness of compression stockings concerning subjective symptoms and objective signs of varicose veins adjusted to their clinical severity. Conclusion: Compression stockings in primary varicose veins are able to improve leg complaints and to prevent swelling.

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