scholarly journals DEVELOPMENT OF METHODOLOGY FOR TRANSPORTATION FLEET STRUCTURE FORMATION

Author(s):  
Iryna Lebid ◽  
Tetyana Anufriyeva ◽  
Luzhanska Nataliia

The paper proposes a methodology for transportation fleet structure formation based on the determination of the standard size fleet by carrying capacity using the criterion of the cost of transportation of 1 ton of cargo, which will be expedient if the number of shipments per day exceeds three times the estimated number of the model range of cars. At a lower intensity of daily shipments, it is necessary to form a standard size range of a vehicle fleet on the basis of a repetition of independent tests. The paper proposes a method of forming the structure of the fleet of vehicles based on determining the size of the fleet using the criterion of the cost of transportation of 1 ton of cargo, which is appropriate if the number of shipments per day exceeds three times the estimated number of cars. With a lower intensity of daily shipments, it is necessary to form a standard size range of the fleet on the basis of repeating independent tests.It has been established that the value of the coefficient of static use of the vehicle's carrying capacity is influenced by the number of intervals for dividing the series of carrying capacity, their length and uniformity, as well as the distribution law of the random value of the item. Violation of the uniformity of the intervals of the series of the carrying capacity of the car, the value of the coefficient can deviate from the average to 6.2% An increase in the number of intervals in a number of carrying capacities of vehicles from 2 to 3 contributes to a rapid increase in the coordination of the density of distribution of the batch volume and shipment to the structure of the vehicle fleet in terms of carrying capacity and is characterized by an increase in the coefficient of compliance on average from 0.65 to 0.75. An increase in the range of carrying capacity up to interval 5 increases the value of the compliance coefficient to 0.8, a further increase in the intervals causes an inversely proportional increase in the compliance coefficient. An increase in the number of car models from 1 to 3 causes a decrease in the cost of transportation in the range of 8% - 11.3%, depending on the degree of use of the vehicle fleet. Further expansion of the model range to 7 units practically does not affect the cost of transportation, and then its growth is observed due to an increase in the duration of downtime while waiting for the proper consignment. It was revealed that an increase in the average weight of a shipment by 2.3 times causes a decrease in the cost of transportation 1.79 times, and with this decrease in the weight of a shipment, an increase in the intensity of growth in the cost of transportation is observed.

2020 ◽  
Vol 24 (1) ◽  
pp. 341-356 ◽  
Author(s):  
Sergey Kuzmin ◽  
Olga Kadnikova ◽  
Gulnara Altynbayeva ◽  
Andrey Turbit ◽  
Zauresh Khabdullina

AbstractThis article proposes a new technology of container carriage of rocks without construction of transport communications in an open-pit mine and with technological and energy-saving advantages. These advantages are: simultaneous excavation of rocks, transportation of rocks by the shortest distance, small mass of a container and mobility of a complex of hoists which will reduce energy expenses and the cost of transportation of the mined rock. One of the principal advantages of the developed technology is the decrease in environmental emissions into the atmosphere of the open-pit mine thanks to the reduction of the vehicle fleet. This technology will enable significant improvement of the environmental situation in the area of mining operations.


2021 ◽  
Vol 8 (2) ◽  
pp. 80-89
Author(s):  
Tatan Sukwika ◽  
Fitra Rahmatulloh

ABSTRAK Pengembangan dan pengelolaan kawasan wisata alam diperlukan nilai ekonomi lingkungan yang terdapat pada suatu kawasan pariwisata. Pembangunan wisata baru dapat meningkatkan nilai ekonomi suatu kawasan wisata. Nilai ekonomi lingkungan dapat menjadi acuan dalam pembangunan berkelanjutan. Tujuan penelitian menentukan nilai lingkungan dan faktor intensitas kunjungan wisatawan. Metode yang digunakan untuk penentuan nilai lingkungan adalah metode travel cost. Pengambilan data lapangan digunakan kuesioner dan wawancara responden. Hasil penelitian secara simultan menunjukkan terdapat pengaruh intensitas pengunjung terhadap faktor waktu tempuh, tingkat pendidikan, umur, dan tingkat pendapatan. Kesimpulannya biaya kunjungan wisata terbesar adalah biaya transportasi, nilai ekonomi kawasan taman wisata alam (TWA) Situ Gunung melampaui Rp200 miliar dan kesediaan membayar (WTP) pengunjung masih menyisakan 62,25% nilai ekonomi yang didapatkan dari total ekonomi. Penelitian lanjutan direkomendasikan fokus pada daya dukung lingkungan untuk melihat kegiatan pariwisata di kawasan TWA Situ Gunung Sukabumi untuk menunjang data TCM. Kata kunci: metode biaya perjalanan, pariwisata, situ gunung Sukabumi, WTP  ABSTRACT The development and management of natural tourism areas should contain environmental economic value in it. The new development can increase the economic value of that tourism area. Environmental economic value can be a reference for sustainable development. The purpose of this study was to obtain environmental values and to determine the tourist visit intensity factor. Travel cost method was used in obtaining the environmental value. Retrieval of field data used questionnaires and interview respondents. The results of the research simultaneously showed that there was an effect on visitor intensity on the factors of travel time, education level, age, and income level. In conclusion, the biggest cost of tourist visits is the cost of transportation, the economic value of the Situ Gunung nature park (TWA) area exceeds Rp 200 billion and the willingness to pay (WTP) of visitors still leaves 62.25% of the economic value obtained from the total economy. Further research is recommended to focus on the carrying capacity of the environment to see tourism activities in the TWA Situ Gunung Sukabumi area to support TCM data. Keywords:  travel cost method, tourism, situ gunung Sukabumi, WTP


Author(s):  
I. V. Rieznikov ◽  
A. I. Fenenko ◽  
V. V. Tkach V. V.

Annotation Purpose. Improving the efficiency of milk production by determining the rational standard size range of design technological solutions for the premises of farms for the content of dairy livestock. Methods. Theoretical provisions for the calculation of design and technological solutions for the construction of livestock buildings, we use graphical and graphoanalytical methods. Results. The design and technological schemes were considered of cowsheds with different placement of the number technological rows and grouping of stalls, for: a two-row scheme with a central aft passage; six-row layout of stalls (with a feed table along the outer perimeter and with a feed table in the center of the barn); 8-row layout of stalls in the barn with two feed tables.The cost of building a room of sandwich panels for a size range of 128 cows per cow is 20601 UAH against 25294 UAHconstructions of brick, which is 22% less than the cost while we have an increase in air volume per cow, respectively, 77 m3 vs. 55 m3 Conclusions 1. The rational standard size range of the milk production farm was determined: premises for 128 cows have 4 rows of 2 stall groups of 16 cows each; premises for 256 cows has 4 rows with 4 stall groups of 16 cows or 8 rows with 2 stall groups of 16 cows; premises for 384 cows has 8 rows with 3 stall groups of 16 cows each or 8 rows with 4 stall groups of 12 cows each; keeping 512 cows the premises has 8 rows of 4 stall groups of 16 cows. In accordance with technical and economic indicators, the most effective content is 386 (400) cows. 2. The economic effect is ensured by rational distribution of the size range of the stalls, their number, and the aisle size in accordance with the zoo-technical requirements for maintaining a highly productive livestock of cows for milk production farms and is 8–16% of the cost of construction and its subsequent maintenance, as a result, the area of the premises decreases for keeping cows and, accordingly, the amount of building materials. Keywords: stall, feed table, barn, stall section, feeding front, type-size range.


Author(s):  
V. Uvarov ◽  
B. Kaytukov ◽  
V. Skel

The problem of limiting the standard-size range of drive mechanisms for hydraulic excavators and self-propelled jib cranes with a wide unification of their elements is considered. This approach allows to increase the serialization of products to reduce costs in the design and production, increases the durability of machines and reduces the time of development of new equipment.The analysis of the production of domestic excavators and cranes is carried out. It is presented in a tabular version and a sequence of logical steps to provide a systematic approach to the development of rational designs of hydraulic excavators and cranes. The analysis showed that it is advisable to carry out unification on the modular principle of the formation of some units and, first of all, of slewing mechanisms of these machines. The technique of unification of turning mechanisms and winches of excavators and cranes based on unified planetary hydromechanical block modules is proposed. Creating hydraulic excavators and cranes with unified planetary hydromechanical mechanisms allows you to reduce operating costs and improve the quality of drive mechanisms for excavators and cranes, reducing the cost and complexity of manufacturing. Unification on a modular principle and the subsequent cooperation of parts, assemblies and units allows expanding opportunities to increase production volumes, provides interspecific unification of their basic elements.


2020 ◽  
Vol 1 (1-2) ◽  
pp. 88-93
Author(s):  
D. Yu. Grishkova

The program for the development of marshalling yards until 2025 assumes the concentration of car traffic processing at large, technically well-equipped marshalling yards. Measures to reduce the downtime of transit cars with processing at the marshalling yard A, aimed at identifying and reducing costs when driving freight trains of increased weight and length on the section A–I1, are relevant from a practical point of view.One way to reduce the cost of driving freight trains of increased weight and length is to avoid forming 9,000-ton trains. Station A forms trains of increased mass and length, measuring 8000 tons and 9000 tons. This technology has a certain positive effect — an increase in the average weight of the train by 25.5 tons, reducing the need for locomotives and locomotive crews, increasing the carrying capacity of the section, unloading the tracks of the receiving and sending fleet. Also, this technology entails a certain number of difficulties in operation, such as certain requirements for the equipment of locomotives and the use of only three-section locomotives for trains weighing 9,000 tons. This raises the question of the feasibility of driving trains weighing 9,000 tons. 


2020 ◽  
Vol 5 (1) ◽  
pp. 456
Author(s):  
Tolulope Latunde ◽  
Joseph Oluwaseun Richard ◽  
Opeyemi Odunayo Esan ◽  
Damilola Deborah Dare

For twenty decades, there is a visible ever forward advancement in the technology of mobility, vehicles and transportation system in general. However, there is no "cure-all" remedy ideal enough to solve all life problems but mathematics has proven that if the problem can be determined, it is most likely solvable. New methods and applications will keep coming to making sure that life problems will be solved faster and easier. This study is to adopt a mathematical transportation problem in the Coca-Cola company aiming to help the logistics department manager of the Asejire and Ikeja plant to decide on how to distribute demand by the customers and at the same time, minimize the cost of transportation. Here, different algorithms are used and compared to generate an optimal solution, namely; North West Corner Method (NWC), Least Cost Method (LCM) and Vogel’s Approximation Method (VAM). The transportation model type in this work is the Linear Programming as the problems are represented in tables and results are compared with the result obtained on Maple 18 software. The study shows various ways in which the initial basic feasible solutions to the problem can be obtained where the best method that saves the highest percentage of transportation cost with for this problem is the NWC. The NWC produces the optimal transportation cost which is 517,040 units.


2021 ◽  
Vol 2 (21) ◽  
pp. 89-96
Author(s):  
E.V. Ibragimov ◽  

Increasing the productivity and efficiency of agricultural cargo transportation in the agro-industrial complex of the Russian Federation is achieved through the use of tractor trains consist-ing of tractors and trailer links, the main of which are trailers. This method allows you to ensure the quality and safety of agricultural goods, as well as reduce the cost of transportation. During the analysis of the known designs of tractor-trailer dump trailers, it was revealed that a character-istic drawback is the imperfection of the design of the locking elements of the platforms designed to fix them on the chassis. As a result, a promising technical solution was developed, which, in comparison with the known ones, has a simple design and increased efficiency when fixing the bodies on the chassis. The article describes the design and the principle of operation of this tech-nical solution. The results of the structural strength calculation are presented. The conducted check showed that the obtained value of the safety factor, equal to 2.2, will ensure the operational reliability of trailed dump vehicles. The results of the study are recommended to both domestic and foreign research institutes, design and production structures of the automotive industry for further study and refinement of the proposed device with a view to its possible implementation in practice.


The Precast industry is booming industry now a day, but then also the implementation ratio of precast member in residential construction work is not up to the mark. As we all know that precast having numerous advantages over the cast in situ construction method, for example it saves the total time of construction which indirectly reduces the cost of construction but still we are lagging behind in implementation of precast in it. In this research we have listed out some problem which can be cause of less implementation of precast in residential construction buildings. As discussed in paper, there are so many factors are affected on Implementation of Precast in Residential Construction Sector For example: Technical Issues and General Issues. In Technical Issues Joint stability problem during Erection, Standard size of precast element, Leakage Issues, Design change related problem, Requirement of Standard Rate per Panel, End user Profit, Additional Taxes, General Issues are: Transportation of Precast Element, Loading and Unloading problems, Transportation to sight, Storage Area, Skilled Labour Research has done and data is collected through Questionery survey, Field survey, and research survey.


2020 ◽  
Vol 22 (1) ◽  
pp. 88-97
Author(s):  
I. R. Hamzin

The present research featured the illicit trade in Russian gold and silver coins in Xinjiang in the 1850's. The paper focuses on the problems of control and customs services, as well as on the difficulties connected with the trade in Russian goods. The historical analysis was based on the documents written by Konstantin Adrianovich Skachkov, the then Russian Consul in Chuguchak. The materials were obtained from the Research Department of Manuscripts of the Russian State Library. In his report, Consul K. A. Skachkov compared the state of the markets of the Russian-Chinese trade in Chuguchak and Kyakhta. He highlighted the broad prospects for trade development in Xinjiang. The Consul paid great attention to the problems on the young market of Central Asia and proposed some measures to improve the situation. He performed a comparative analysis of the trading activities of a Russian merchant and a smuggler. The analysis makes it possible to reconstruct the trading process, determine the cost of transportation, and formulate the commercial benefit resulting from the legal trade and the contraband trade. K. A. Skachkov concluded that despite the high potential for trade development, the region was torn apart by substantial internal contradictions and demanded greater attention from the government. The illicit trade in Russian coins was caused by the barter trading on the Xinjiang market in 1850's.


2020 ◽  
Vol 17 (5) ◽  
pp. 130-163
Author(s):  
O. V. Tarovik ◽  
O. M. Mudrova

Demand for low-tonnage transportation of LNG requires improved logistics. Assessing the value of all parts of the supply chain is an important component of solving the problem of optimizing transportation costs for both consumers and LNG suppliers. In connection with tightening of environmental requirements regarding bunker fuel, the task of optimizing the supply of LNG for water transport by the cost of transportation becomes particularly relevant.The objective of the study is to develop a universal approach to estimating the cost of transporting low-tonnage LNG for bunkering vessels in the Russian Federation.The research methodology is focused on the analytical method based on a system-structural approach.As part of the departmental project of the Russian Ministry of Industry and Trade «Development of  gaspowered fleet for navigation in coastal waters and inland waterways», the authors developed technical and economic models for calculating the unit cost of LNG transportation by road and water. To calculate the unit cost of LNG transportation by rail, the data of TMkarta information and reference system were used. Based on model calculations and data of TMkarta system, regression relations were obtained that allow one to determine the cost of transportation for various options of transport and technological schemes based on a limited set of parameters. An approach has also been proposed for estimating the cost of LNG transshipment. The regression ratios were tested for selected routes. As a result,conclusions were drawn about the most effective LNG transportation options.


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