scholarly journals THE TECHNIQUE OF FORMATION OF SYSTEM OF FORESTRY MACHINES

2017 ◽  
Vol 7 (1) ◽  
pp. 111-117 ◽  
Author(s):  
Мамматов ◽  
Vladimir Mammatov ◽  
Мохирев ◽  
Aleksandr Mokhirev
Keyword(s):  
Expert Knowledge ◽  
Stock Selection ◽  
Screening Criteria ◽  
Natural Production ◽  
Wide Range ◽  
Major Operation ◽  
Market Engineering ◽  
The Right ◽  
Production Conditions ◽  
Selection Of

A variety of natural-production conditions, which is necessary to conduct logging activities largely complicates the choice of forest machines for each individual company in the industry having logging sites in its composition. Depending on many natural and production conditions such as: slope, bearing capacity of soils, ambient temperature, maximum investments, etc., and the wide range of forestry equipment on the market, engineering divisions of the company solving a problem about the purchase of new or replacement of lost its performance machines are more and more difficult to make the right choice. This work presents a methodology for forming the system of forest machines with the natural and production conditions in a convenient form, not requiring special expert knowledge from the field of mathematical modeling or other areas of science. According to the methodology the first step is selection of basic machine and performing the first major operation in felling trees, then switch to the auxiliary machines which are linked to the underlying performance, to reduce the number of in-process stock. Selection of basic and auxiliary machines is provided that candidates and excludes important indicators. If in the process of selecting the logging machine does not meet the screening criteria for excluding indicators then it does not participate in the selection. Significant index can be neglected in case of discrepancy of candidates to stated requirements. The performance of the model was tested on the example of harvesting sites of the enterprises of the Krasnoyarsk region in spring 2016. In the course of the experiment the system of forest machines, meeting the required selection criteria, was obtained.

scholarly journals ANALYSIS OF CREATING BENCHMARK IMAGES METHODS TO TEST THE ACCURACY OF PHOTOGRAMMETRIC SOFTWARE

2021 ◽  
Vol 26 (2) ◽  
pp. 47-55
Author(s):  
Alexander V. Komissarov ◽  
◽  
Valeriya V. Dedkova ◽  
Keyword(s):  
Aerial Survey ◽  
High Price ◽  
Work Time ◽  
Wide Range ◽  
Processing Accuracy ◽  
Survey Results ◽  
Classi Fication ◽  
The Right ◽  
Imagery Processing ◽  
Selection Of

Digital photogrammetry is based on the use of specialized photogrammetric software (or digital photogrammetric systems) to solve problems related to the aerospace imagery processing. A wide range of programs and high price motivate consumers to choose the right software that responds to requirements of processing accuracy, amount of work, time of execution, etc. The main goal of this study is to analyze the existing methods of benchmark images creating to test photogrammetric pro-grams. The article carries out the analysis of existing techniques of creating benchmark images, classi-fication, selection of benchmark images types suitable for testing of photogrammetric software, and substantiates the necessity for checking of aerial survey results quality in specialized software.

Choosing the Right “Bit Pad”: Human Factors Aspects of Digitizing Tablet Size

1982 ◽  
Vol 26 (7) ◽  
pp. 615-615
Author(s):  
James L. Knight
Keyword(s):  
Computer Graphics ◽  
Task Analysis ◽  
Movement Control ◽  
Human Movement ◽  
Optimum Size ◽  
Wide Range ◽  
The Right ◽  
Parameter Values ◽  
Selection Of ◽  
Digitizing Tablet

Entry of non-alphanumeric information into computer graphics systems is frequently accomplished by moving a drawing implement over the surface of a digitizing tablet. These tablets are commercially available in a wide range of sizes. Therefore, an important question from both ergonomic and economic standpoints concerns the optimum size for the digitizing tablet. To answer this question, models of human movement control were applied to the graphic operator's task. An experiment was conducted to obtain appropriate model parameter values and to empirically evaluate the resulting predictions of the generated models. A combination of task analysis and movement control modelling thus allowed selection of an optimum digitizing tablet size for a range of computer-graphics entry tasks. Details and results of this methodology will be presented.

scholarly journals Choosing the Right Life Partner: Ecological Drivers of Lichen Symbiosis

2021 ◽  
Vol 12 ◽  
Author(s):  
Lucie Vančurová ◽  
Jiří Malíček ◽  
Jana Steinová ◽  
Pavel Škaloud
Keyword(s):  
Canary Islands ◽  
Environmental Conditions ◽  
Environmental Gradients ◽  
Fungal Species ◽  
Climatic Conditions ◽  
Algal Symbionts ◽  
Wide Range ◽  
Taxonomic Range ◽  
The Right ◽  
Selection Of

Lichens are an iconic example of symbiotic systems whose ecology is shaped by the requirements of the symbionts. Previous studies suggest that fungal (mycobionts) as well as photosynthesizing (phycobionts or cyanobionts) partners have a specific range of acceptable symbionts that can be chosen according to specific environmental conditions. This study aimed to investigate the effects of climatic conditions and mycobiont identity on phycobiont distribution within the lichen genera Stereocaulon, Cladonia, and Lepraria. The study area comprised the Canary Islands, Madeira, Sicily, and the Aeolian Islands, spanning a wide range of climatic conditions. These islands are known for their unique and diverse fauna and flora; however, lichen phycobionts have remained unstudied in most of these areas. In total, we genetically analyzed 339 lichen samples. The phycobiont pool differed significantly from that outside the studied area. Asterochloris mediterranea was identified as the most abundant phycobiont. However, its distribution was limited by climatic constraints. Other species of Asterochloris and representatives of the genera Chloroidium, Vulcanochloris, and Myrmecia were also recovered as phycobionts. The selection of symbiotic partners from the local phycobiont pool was driven by mycobiont specificity (i.e., the taxonomic range of acceptable partners) and the environmental conditions, mainly temperature. Interestingly, the dominant fungal species responded differently in their selection of algal symbionts along the environmental gradients. Cladonia rangiformis associated with its phycobiont A. mediterranea in a broader range of temperatures than Stereocaulon azoreum, which favors other Asterochloris species along most of the temperature gradient. Stereocaulon vesuvianum associated with Chloroidium spp., which also differed in their temperature optima. Finally, we described Stereocaulon canariense as a new endemic species ecologically distinct from the other Stereocaulon species on the Canary Islands.

METHODS OF DISTRIBUTION OF RESEARCH WORKS AMONG THE COLLECTIVES OF IMPLEMENTERS OF SCIENTIFIC PROJECTS HIGHER MILITARY EDUCATION INSTITUTIONS

2019 ◽  
Vol 2 (12) ◽  
pp. 178-187
Author(s):  
R. Bulgakov ◽  
V. Golovanʼ ◽  
L. Knaub
Keyword(s):  
Armed Forces ◽  
Scientific Work ◽  
Military Education ◽  
Resource Base ◽  
Structural Units ◽  
Wide Range ◽  
Scientific Project ◽  
Higher Educational ◽  
The Right ◽  
Selection Of

The article deals with increasing the efficiency of scientific project management in higher military educational establishments by introducing the method of distribution of research works among the teams of performers of scientific projects of higher military educational establishments, analyzes the load of scientific and pedagogical workers of typical structural units of higher educational establishments of higher educational establishments. Actions of the functional leader in the selection of the team of executors of the scientific project. Specificity of scientific tasks in the military field is the need to overcome the uncertainties caused by the unpredictability of the enemy during combat. The complexity and multidimensionality of the problem of planning and managing the scientific and technical activities in the security and defense sector necessitate the improvement of existing planning and management mechanisms in the Armed Forces of Ukraine. Management activities of functional leaders is one of the important factors for the success and quality of scientific tasks. In the teaching and research processes of higher military education there is a wide range of management entities. The content and scope of managerial functions of heads of departments, faculties and departments are defined in the relevant charters, guidelines and instructions. However, it is very difficult to identify the quantitative weight of each institution of management of the scientific-pedagogical system of higher education institutions and its structural units. The order of performing management functions during certain periods of activity is worked out by each entity, mainly independently, on the basis of personal experience, the choice of forms, methods and means of influencing the management object is, for the most part, a creative process. One of the important aspects of the implementation of a scientific project that depends on the end result is the selection of the "right" team of project executors and the project resource, namely: specialists in the field of research, motivated by the result, able to achieve it by their competence, not overloaded with other work , plus - comprehensive security of the project. In order to increase the effectiveness of management activities, to apply the management of the institution (the chief and his deputy for scientific work) by the apparatus, to qualitatively evaluate and make the right management decisions at the stage of appointment of the project manager and the team of executors of the scientific project, to determine the resource base and limitations in this particular scientific project, this technique is proposed. Management of scientific projects in all phases of their implementation - from order to implementation, is a priority direction of increasing the efficiency of the system of scientific and scientific-technical activity of the Armed Forces of Ukraine. The implementation of the algorithm of selection of the team of executors of the scientific project is an effective mechanism for optimizing the decision-making process by functional managers in the early stages of scientific projects.

scholarly journals Modification of Digital Oil Pressure Measurement Equipment using Bluetooth Technology

2019 ◽  
Vol 13 (2) ◽  
pp. 103
Author(s):  
Rasma Rasma ◽  
Thomas Junaedi ◽  
Hendro Purwono ◽  
Riki Effendi
Keyword(s):  
Pressure Gauge ◽  
Measurement Methods ◽  
Hydraulic Pressure ◽  
Work Process ◽  
Diagnostic Instruments ◽  
Digital Pressure ◽  
Wide Range ◽  
Measurement Results ◽  
The Right ◽  
Selection Of

PT United Tractors Tbk Jakarta workshop held a lot of Machine Inspection Programs for Komatsu units. During the implementation of the Machine Inspection Program (PPM) the machine inspection program is one part of the maintenance that is carried out periodically to obtain accurate data on the condition of the equipment at the time by carrying out checks and adjustments using measurement methods and diagnostic instruments The use of a pressure gauge is still using manual and has a measurement distance that is still limited, if workers or mechanics are not equipped with sufficient knowledge then the pressure gauge will have the potential for error in use and the selection of a pressure gauge is not appropriate to the pressure gauge directly connected to the hydraulic pressure through the hose then the work process ppm is not enough 1 manpower. Therefore it is necessary to modify a digital pressure gauge that has a wide range of scales, in addition a wireless connection is needed to enable the operation of the unit and measurements are made 1 manpower and Bluetooth is one of the right choices in addition to the reach can be met in an application not too difficult so that readings measurement results can be connected directly via mobile.

Typification of Forest Areas by Natural-Production Conditions Based on Cluster Analysis

2021 ◽  
pp. 120-137
Author(s):  
Ilya R. Shegelman ◽  
◽  
Pavel V. Budnik
Keyword(s):  
Cluster Analysis ◽  
Data Set ◽  
Polar Urals ◽  
Natural Production ◽  
Wide Range ◽  
Murmansk Region ◽  
The Republic ◽  
Negative Environmental Impact ◽  
Machine Systems ◽  
Production Conditions

The effectiveness of harvesting machines, their reliability, and the level of negative environmental impact depends on the degree of adaptation of the equipment to natural-production conditions (NPC). To choose the equipment it is necessary to allocate groups of areas with close NPC. The purpose of the study is to form methodological tools for forest industry typification of forest areas by NPC. It is proposed to carry out the typification of forest areas based on cluster analysis. For this purpose, a methodology has been developed, including: setting the goal of typing areas by NPC; data collection on NPC; conducting cluster analysis; decision making on typification of areas by NPC. The task of cluster analysis is to divide, on the basis of a certain set of data, the set of forest areas into groups with similar NPCs. It is proposed to use Euclidean distances as a measure of belonging to one of the groups, and to determine the data set by indicators describing the NPC. The proposed methodology has been tested on the example of the European North of Russia (ENR). The study showed that three zones can be distinguished in ENR: zone A, including the Murmansk region; zone B, including the Republic of Karelia, the Republic of Komi and the Arkhangelsk region; zone C, including the Vologda region. Additionally, two subzones are distinguished in zone B: the West Karelian Upland and the territories belonging to the Northern, Subpolar and Polar Urals. The proposed methodology allows to increase the degree of formalization and convenience of the typification process of forest areas by NPC, to take into account a wide range of various aspects of natural-production conditions, their probabilistic nature, as well as to flexibly carry out the typification of areas for specific purposes. The research results may be applicable in solving problems of searching for effective technologies and rational parameters of logging machine systems.

scholarly journals WILL CASHLESS PAYMENT BECOME CONSUMER'S TRANSACTION HABIT IN THE "NEW NORMAL" ERA?

TRIKONOMIKA ◽  
2021 ◽  
Keyword(s):  
Self Efficacy ◽  
Perceived Risk ◽  
Continuance Intention ◽  
New Normal ◽  
Wide Range ◽  
Perceived Security ◽  
The Right ◽  
Selection Of

The purpose of this study was to find out whether or not new habit, cashless transaction, would still be used after the Covid-19 pandemic or in the new normal era, considering that this was a situational or temporary factor. The population of this research was individual consumers who were currently more likely to have higher intensity in cashless transactions than they did before the pandemic. This research was a study conducted during the Covid-19 pandemic in Indonesian society by examining the effect of perceived security, perceived risk, facilitating condition, Self-Efficacy of trust in online payments, and the use of cashless on Usage Continuance intention. The results of this study with 594 tested samples were two insignificant correlations. They were perceived risk toward trust in online payments and self-efficacy on usage continuance intention. These findings could support a wide range of stakeholders - both first movers/ pioneers and newcomers to the e-money segment, as the information about promotion and selection of the right market for their products.

scholarly journals APPROACH FOR THE AUTOMATED AND DATA-BASED DESIGN OF MECHANICAL JOINTS.

2021 ◽  
Vol 1 ◽  
pp. 521-530
Author(s):  
Christoph Zirngibl ◽  
Benjamin Schleich ◽  
Sandro Wartzack
Keyword(s):  
Expert Knowledge ◽  
Reference Model ◽  
High Reliability ◽  
Experimental Tests ◽  
Cold Forming ◽  
Mechanical Joints ◽  
Wide Range ◽  
The Individual ◽  
Transfer Of Information ◽  
Selection Of

AbstractAs a result of the increasing challenges in the field of lightweight constructions, the demand for efficient joining technologies is continuously rising. For this purpose, cold forming processes offer an environmental friendly and fast alternative to established joining methods (e.g. welding). However, to ensure a high reliability, not only the selection of an appropriate procedure, but also the dimensioning of the individual joint is essential. While product designers can rely on a wide range of design principles for thermal processes, the dimensioning and evaluation of mechanical joining processes is mainly based on expert knowledge and a few experimental tests. Although few studies already investigated the numerical analysis of mechanical joints, an approach for the sustainable and consistent optimization of the strength and reliability of joining connections for varying use-cases is not available yet. Motivated by this lack, this paper presents an approach for the automated transfer of information within the process chain and the data-based analysis of mechanical joints by using clinching as an example. Therefore, the CRISP-DM reference model is used for the systematic data mining.

Evaluation of 99mTc-Label led Vitamin K4 as an Agent for Testicular Imaging

1991 ◽  
Vol 30 (01) ◽  
pp. 35-39 ◽  
Author(s):  
H. S. Durak ◽  
M. Kitapgi ◽  
B. E. Caner ◽  
R. Senekowitsch ◽  
M. T. Ercan
Keyword(s):  
Soft Tissue ◽  
Room Temperature ◽  
Normal Subjects ◽  
Left Testis ◽  
Wide Range ◽  
Activity Ratios ◽  
The Right ◽  
Radioactivity Levels

Vitamin K4 was labelled with 99mTc with an efficiency higher than 97%. The compound was stable up to 24 h at room temperature, and its biodistribution in NMRI mice indicated its in vivo stability. Blood radioactivity levels were high over a wide range. 10% of the injected activity remained in blood after 24 h. Excretion was mostly via kidneys. Only the liver and kidneys concentrated appreciable amounts of radioactivity. Testis/soft tissue ratios were 1.4 and 1.57 at 6 and 24 h, respectively. Testis/blood ratios were lower than 1. In vitro studies with mouse blood indicated that 33.9 ±9.6% of the radioactivity was associated with RBCs; it was washed out almost completely with saline. Protein binding was 28.7 ±6.3% as determined by TCA precipitation. Blood clearance of 99mTc-l<4 in normal subjects showed a slow decrease of radioactivity, reaching a plateau after 16 h at 20% of the injected activity. In scintigraphic images in men the testes could be well visualized. The right/left testis ratio was 1.08 ±0.13. Testis/soft tissue and testis/blood activity ratios were highest at 3 h. These ratios were higher than those obtained with pertechnetate at 20 min post injection.99mTc-l<4 appears to be a promising radiopharmaceutical for the scintigraphic visualization of testes.

COMBINATORIAL POLYNOMIALLY COMPUTABLE CHARACTERISTICS OF SUBSTITUTIONS AND THEIR PROPERTIES

2020 ◽  
Vol 7 (2) ◽  
pp. 34-41
Author(s):  
VLADIMIR NIKONOV ◽  
◽  
ANTON ZOBOV ◽  
Keyword(s):  
Mathematical Expectation ◽  
Point Of View ◽  
Small Range ◽  
Computational Point ◽  
Wide Range ◽  
Bijective Function ◽  
The Difference ◽  
Element Base ◽  
Selection Of

The construction and selection of a suitable bijective function, that is, substitution, is now becoming an important applied task, particularly for building block encryption systems. Many articles have suggested using different approaches to determining the quality of substitution, but most of them are highly computationally complex. The solution of this problem will significantly expand the range of methods for constructing and analyzing scheme in information protection systems. The purpose of research is to find easily measurable characteristics of substitutions, allowing to evaluate their quality, and also measures of the proximity of a particular substitutions to a random one, or its distance from it. For this purpose, several characteristics were proposed in this work: difference and polynomial, and their mathematical expectation was found, as well as variance for the difference characteristic. This allows us to make a conclusion about its quality by comparing the result of calculating the characteristic for a particular substitution with the calculated mathematical expectation. From a computational point of view, the thesises of the article are of exceptional interest due to the simplicity of the algorithm for quantifying the quality of bijective function substitutions. By its nature, the operation of calculating the difference characteristic carries out a simple summation of integer terms in a fixed and small range. Such an operation, both in the modern and in the prospective element base, is embedded in the logic of a wide range of functional elements, especially when implementing computational actions in the optical range, or on other carriers related to the field of nanotechnology.

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