scholarly journals Selection of Satellite Image Series for the Determination of Forest Pathology Dynamics Taking Into Account Cloud Coverage and Image Distortions Based on the Data Obtained from the Key Point Detector

2019 ◽  
Author(s):  
Евгений Трубаков ◽  
Evgeniy Trubakov ◽  
Андрей Трубаков ◽  
Andrey Trubakov ◽  
Дмитрий Коростелёв ◽  
...  
Keyword(s):  
Satellite Image ◽  
Forest Pathology ◽  
Acceptable Result ◽  
New Approach ◽  
Cloud Coverage ◽  
Point Detector ◽  
Automated Methods ◽  
Selection Of

Remote sensing of the earth and monitoring of various phenomena have been and still remain an important task for solving various problems. One of them is the forest pathology dynamics determining. Assuming its dependence on various factors forest pathology can be either short-term or long-term. Sometimes it is necessary to analyze satellite images within a period of several years in order to determine the dynamics of forest pathology. So it is connected with some special aspects and makes such analysis in manual mode impossible. At the same time automated methods face the problem of identifying a series of suitable images even though they are not covered by clouds, shadows, turbulence and other distortions. Classical methods of nebulosity determination based either on neural network or decision functions do not always give an acceptable result, because the cloud coverage by itself can be either of cirrus intortus type or insignificant within the image, but in case of cloudiness it can be the reason for wrong analysis of the area under examination. The article proposes a new approach for the analysis and selection of images based on key point detectors connected neither with cloudiness determination nor distorted area identification, but with the extraction of suitable images eliminating those that by their characteristics are unfit for forest pathology determination. Experiments have shown that the accuracy of this approach is higher than of currently used method in GIS, which is based on cloud detector.

scholarly journals Age-Related Immunoreactivity Profiles to Diverse Mycobacterial Antigens in BCG-Vaccinated Chinese Population

2021 ◽  
Vol 11 ◽  
Author(s):  
Qing-yuan Yang ◽  
Yu-tong Zhang ◽  
Jia-ni Xiao ◽  
Yu-shuo Liang ◽  
Ping Ji ◽  
...  
Keyword(s):  
Elispot Assay ◽  
Vaccine Development ◽  
Age Related ◽  
Healthy Donors ◽  
Latent Tb ◽  
Latent Tb Infection ◽  
Mycobacterial Antigens ◽  
Selection Of

Long-term immunoreactivity to mycobacterial antigens in Bovis Calmette-Guérin (BCG)-vaccinated population is not well investigated. Herein, 361 volunteer healthy donors (HDs) with neonatal BCG vaccination from Shanghai region (China) were enrolled. They were subdivided into ESAT-6/CFP10- (E6C10-) and ESAT-6/CFP10+ (E6C10+) groups based on gamma-interferon release assays (IGRAs). Three mycobacterial antigens, including Rv0934, Rv3006, and Rv3841, were subjected to the determination of immunoreactivity by ELISPOT assay. The immunoreactivities to three mycobacterial antigens were firstly compared among TB patients (N=39), E6C10+ HDs (N=78, 21.61% of HDs) and E6C10- HDs (N=283, 78.39% of HDs). It was revealed that Rv3006 was dominant upon M.tb infection, while Rv3841 was likely to be more responsive upon latent TB infection. In E6C10- population, the immunoreactivity to Rv3841 maintained along with aging, whereas those to Rv3006 and Rv0934 attenuated in E6C10- HDs older than 45 years old. Our study implies the shift of dominant antigens at different infection statuses, providing the clues for the selection of mycobacterial antigens in vaccine development and precision revaccination in the future.

Strategic analysis of the competitiveness of the enterprise

2021 ◽  
pp. 35-46
Author(s):  
Yuliia Grynchuk ◽  
Andrii Muzychenko ◽  
Kseniia Prykhod’ko
Keyword(s):  
Price Policy ◽  
Strategic Analysis ◽  
Competitive Advantages ◽  
Macroeconomic Factors ◽  
Modern Computer ◽  
Study Results ◽  
Essential Components ◽  
Selection Of

The purpose of the article is to develop a methodology of strategic analysis of enterprise competitiveness. The methodological basis of the research is the use of general scientific methods: the method of analysis and synthesis, theoretical generalization and comparison, and the means of modern computer technology for data visualization. The scientific novelty of the received results consists of developing a logical and linguistic methodology of competitiveness analysis in the long term. The article is devoted to the development of strategic analysis of the competitiveness of the enterprise. Relevance of research is caused by enterprises management in the modern markets that use innovations of products or technologies, constantly face competition, and according to its condition, should make decisions on strategic development in conformity with the country’s development market inquiries the society. Thus, the problem is not only for new companies but also for those that already function in the market and carry out planning of economic activity to become the market leader, not to lose leadership, to keep the positions. The given methodology can be used by any enterprise irrespective of the type of activity, form of ownership, or strategic goals. Conclusions. According to the study results, the methodology of strategic analysis, which is based on the study of potential internal development of the enterprise, taking into account the influence of external factors, which include macroeconomic factors of influence and market conditions. The basic approaches to the analysis of the competitiveness of the enterprise of foreign and domestic researchers are investigated in the article. The essential components of competitive advantages, which include price and non-price factors, are considered. Peculiarities of carrying out the analysis of the competitiveness of the enterprise after Porter are defined. The methodology of competitiveness analysis in the long term is developed. The main components of the strategic analysis are the estimation of activity scale in a long-term prospect, determination of strategic aims of the company, determination of aims of market coverage, selection of strategy type, selection of basic subjects of influence on competitive advantages, assessment of future relations with suppliers and buyers, assessment of cost price level, assessment of the quality of products and services and unique properties of products, formation of internal price policy. Key words: strategy, strategic analysis, competitiveness, competitive advantages.

scholarly journals A New Approach to Determine the Critical Path in Stochastic Activity Network

2014 ◽  
Vol 2014 ◽  
pp. 1-13
Author(s):  
Weng-Ming Chu ◽  
Koan-Yuh Chang ◽  
Chien-Yu Lu ◽  
Chang-Hung Hsu ◽  
Chien-Hung Liu ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Path Dependence ◽  
Critical Path ◽  
Stochastic Networks ◽  
Stochastic Network ◽  
New Approach ◽  
Path Index ◽  
Tracing Algorithm ◽  
Selection Of

The determination of the critical path (CP) in stochastic networks is difficult. It is partly due to the randomness of path durations and partly due to the probability issue of the selection of the critical path in the network. What we are confronted with is not only the complexity among random variables but also the problem of path dependence of the network. Besides, we found that CP is not necessarily the longest (or shortest) path in the network, which was a conventional assumption in use. The Program Evaluation and Review Technique (PERT) and Critical Path Index (CPI) approaches are not able to deal with this problem efficiently. In this study, we give a new definition on the CP in stochastic network and propose a modified label-correcting tracing algorithm (M-LCTA) to solve it. Based on the numerical results, compared with Monte Carlo simulation (MCS), the proposed approach can accurately determine the CP in stochastic networks.

Automatic inference on stable robotic assembly sequences based upon the evaluation of base assembly motion instability

Robotica ◽  
1993 ◽  
Vol 11 (4) ◽  
pp. 351-362 ◽  
Author(s):  
D.Y. Cho ◽  
C.K. Shinf ◽  
H.S. Chot
Keyword(s):  
Robotic Assembly ◽  
Fixture Design ◽  
Assembly Sequence ◽  
Inference Method ◽  
New Approach ◽  
Assembly Sequences ◽  
Crucial Information ◽  
Part Motion ◽  
Selection Of

SUMMARYThe consideration of part motion instability is crucial to the determination of assembly sequence since this affects the complexity of fixtures and dexterity of robots. This paper presents a new approach to the inference of robotic assembly sequences, taking into consideration the instability of base assembly motions. Based upon the evaluation of motion instability, the method generates stable assembly sequences by use of the precedence constraint inference method previously developed by the authors. An example assembly of a 10-part electrical relay is given to illustrate the concepts and procedure of the proposed scheme. The results show that the proposed method can be effectively utilized to generate stable assembly sequences, thus providing crucial information on the fixture design and selection of types of assembly robots.

A New Approach for the Determination of Cam Follower System Parameters

1988 ◽  
Vol 202 (5) ◽  
pp. 361-368
Author(s):  
M K Baru ◽  
J Ellis
Keyword(s):  
Parametric Identification ◽  
Filter Method ◽  
New Approach ◽  
State Variable ◽  
Cam Follower ◽  
State Variable Filter ◽  
Stiffness And Damping ◽  
Design And Manufacture

This paper reports a first investigation in the use of the state variable filter method of parametric identification in the determination of the mass, stiffness and damping content of cam follower systems. Simulated and real experimental data are processed by the technique with good results. Further developments are necessary (extension to higher order systems and inclusion of Coulomb damping) with the long-term aim of applying the results in the design and manufacture of dynamically tuned cams.

A Comparative Research on Computation Methods for Wave Loads of Semi-Submersible Platform

2018 ◽  
Author(s):  
Zhiyong Pei ◽  
Shenyi Wu ◽  
Keqiang Chen ◽  
Xiaoming Hu ◽  
Weiguo Wu
Keyword(s):  
Wave Method ◽  
Wave Loads ◽  
Wave Load ◽  
Fundamental Research ◽  
Wave Methods ◽  
Long Term Prediction ◽  
External Loads ◽  
Selection Of

Wave load is one of the main external loads for semi-submersible platform, which is usually calculated by design wave method. In the present research, three design wave methods are investigated and compared on design wave parameters determination of semi-submersible platforms, i.e., the deterministic design wave method, stochastic design wave method and long-term prediction design wave method. Moreover, the specified calculation methods and the detailed wave load computation procedure are summarized considering the load characteristics of global hydrodynamic response. Finally, a semi-submersible platform is regarded as objective and the design wave results of three design wave methods are compared and analyzed. The fundamental research can provide reference for rational selection of wave loads calculation method.

scholarly journals Determination of the importance of evaluation criteria during the process of recruitment and selection of personnel based on the application of the SWARA method

Ekonomika ◽  
2021 ◽  
Vol 67 (4) ◽  
pp. 1-9
Author(s):  
Milica Popović ◽  
Gabrijela Popović ◽  
Darjan Karabašević
Keyword(s):  
Personnel Selection ◽  
Selection Process ◽  
Evaluation Criteria ◽  
Domain Experts ◽  
Recruitment And Selection ◽  
Weighting Coefficients ◽  
Final Selection ◽  
Selection Of

Personnel selection for an organization is an extremely important process. Modern organizations strive to improve the process of recruitment and selection of personnel as much as possible, in order to provide the organization with quality personnel and thus long-term competitiveness. In addition, the evaluation criteria on which the recruitment and selection process is based is also important, as it has a large impact on the final selection of candidates. Therefore, the aim of this paper is to propose the application of multi-criteria decision-making methods for the process of determining the weighting coefficients of evaluation criteria. Accordingly, the SWARA (Step-Wise Weight Assessment Ratio Analysis) method for determining weights was applied in the paper. The SWARA method proved to be extremely reliable when it comes to defining the weights of evaluation criteria, primarily due to its simplicity and the fact that respondents and domain experts could easily express their views on the issue.

Joint Positions and Robot Stability of the Omnidirectional Crawling Quadruped Robot

1999 ◽  
Vol 11 (6) ◽  
pp. 510-517 ◽  
Author(s):  
Xuedong Chen ◽  
◽  
Keigo Watanabe ◽  
Kiyotaka Izumi ◽  
◽  
...  
Keyword(s):  
Kinematic Chain ◽  
Quadruped Robot ◽  
Robot Kinematics ◽  
Stable Range ◽  
New Approach ◽  
Foot Placement ◽  
Quadruped Robots ◽  
Selection Of ◽  
Stable Area

Determination of joint positions, judgment of robot stability, and selection of the consequential swing leg are keys to crawling control for quadruped robots. We derive an efficient way to obtain actuation variables of joint positions to satisfy the gait for quadruped robots. By defining the statically stable area for foot placement, a new approach on analysis of robot stability is presented. Unlike conventionally, we avoid solving complicated direct robot kinematics as an overall kinematic chain and simultaneously show information on robot stability and the stable range of foot placement. Effectiveness is shown in practical crawling experiments.

After the Dance is over: Some Issues and Suggestions for Follow-up Assessment in Behavior Therapy

1977 ◽  
Vol 41 (3_suppl) ◽  
pp. 1287-1308 ◽  
Author(s):  
Eric J. Mash ◽  
Leif G. Terdal
Keyword(s):  
Behavior Therapy ◽  
Intervention Programs ◽  
Long Term Effects ◽  
Long Time ◽  
Time Periods ◽  
Research Recommendations ◽  
Selection Of

Behavioral intervention programs have thus far failed to provide sufficient follow-up information for the evaluation of long-term effects. This omission is believed to be related to an inadequate conceptualization of follow-up assessment, as well as to the methodological and practical difficulties inherent in assessing behavior over long time periods. A framework for follow-up assessment that is consistent with current behavioral efforts to program generalization is described and is contrasted with traditional views of follow-up that look for effects following the termination of treatment. Several methodological features of follow-up assessment are discussed, along with research recommendations, including the determination of length of appropriate follow-up intervals, the frequency of follow-up assessments, the need for standardization of measures both within and between studies, reactivity of follow-up assessment, the selection of follow-up measures and attrition of subjects.

Decommissioning Strategy Options for MR Reactor at the Kurchatov Institute, Moscow

2007 ◽  
Author(s):  
M. T. Cross ◽  
N. F. Harman ◽  
D. Charles ◽  
A. Harper ◽  
B. K. Bylkin ◽  
...  
Keyword(s):  
Reactor Power ◽  
Materials Testing ◽  
Spent Fuel ◽  
Kurchatov Institute ◽  
Attribute Analysis ◽  
Fuel Reactor ◽  
Contamination Levels ◽  
Selection Of

The principal decommissioning goal for the nuclear installations of the Kurchatov Institute is the removal of spent fuel, reactor facilities and radioactive waste from the Institute’s site. As the result of decommissioning, the buildings, constructions and areas should be cleaned to residual contamination levels acceptable to the stakeholders. These levels are determined in view of possible options for the rehabilitation of the Institute’s areas under conditions of compliance with acting legislation for safety provisions for staff, population noting the proximity of the site to the local urban environment. Research reactor MR was commissioned in 1963 for reactor materials testing and finally shutdown in 1993. The reactor power with the experimental loops was 50 MWt. Several features were identified for the development of a decommissioning strategy for this reactor, namely: – the strategy should consider many factors in a broad approach with international, inter-industry and long-term perspectives; – the current situation for decommissioning is uncertain and must account for the views of a variety of stakeholders on possible final conditions and further use of the site and the route to achieve these; and – a lack of sufficiency in the national legislation base for execution of the work and the possible options for its completion. On the basis of worldwide experience, the strategy for decommissioning of reactor MR was determined as follows: – determination of the options for the final rehabilitation of the Institute’s areas; – determination of the stakeholders and their priority concerns; – determination of the strategy options for achievement of the final status; – determination of the main factors influencing the selection of the decommissioning strategy; – selection of the most acceptable strategies on the basis of a multi-attribute analysis; – determination of the main stages and principles of implementation of the selected strategy; and – development of the decommissioning activities considering the work that will be required. As the result of the multi-attribute analysis, the following conclusion has been made: – the preferred final status of the facility is for a nuclear re-use application; – the preferred decommissioning option is immediate dismantling.

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