Vital and health statistics. Ser. 4, Documents and committee reports最新文献

{"title":"Pressure of Electromagnetic Radiation on a Linear Vibrator","authors":"Mykola Kokodii, S. Berdnik, V. Katrich, M. Nesterenko, M. Kaydash","doi":"10.26565/2312-4334-2021-4-23","DOIUrl":"https://doi.org/10.26565/2312-4334-2021-4-23","url":null,"abstract":"Nowadays the pressure of electromagnetic radiation in the optical range is widely used in laser traps (so called optical tweezers or single-beam gradient force trap) to control the position of microparticles, biological cells and other microscopic objects. This is possible by focusing the laser radiation into the area of several micrometers in size. The intensity of the radiation in the area is sufficient to hold particles in the beam and manipulate them. We are interested to research similar possibility in the microwave range of wavelengths. However we had faced a number of difficulties in this range: the size of the focal region is much larger, the radiation intensity is less, and to control microscopic objects by means of radiation pressure very high powers are required. And we decided to consider the known effect of a very strong interaction of thin conducting fibers (metal, semiconductor, graphite) with microwave radiation. The efficiency factor of radiation pressure on such objects reaches values of several hundreds and thousands. This can be used to control objects in the form of electrically thin metal conductors by means of radiation pressure. Methods for calculating the pressure of electromagnetic radiation on an infinitely long circular cylinder are known. In this paper we propose a method for calculating the radiation pressure on a circular cylinder (vibrator), the length of which is comparable to the radiation wavelength. We have found out that when the vibrator length is close to half the wavelength, the radiation pressure efficiency factor is much larger than for an infinite cylinder. We have obtained the dependence of the radiation pressure efficiency factor on the length and diameter of an absolutely reflecting and impedance vibrator. It decreases with decreasing conductivity. An infinite cylinder at a certain value of conductivity has a maximum of the radiation pressure efficiency factor.","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91143991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Hydrostatic Pressure and Cationic Vacancy on the Electronic and Magnetic Properties of the ZnSe:T Crystals (T = Ti, V, Cr, Mn, Fe, Co, Ni)","authors":"S. Syrotyuk","doi":"10.26565/2312-4334-2021-4-03","DOIUrl":"https://doi.org/10.26565/2312-4334-2021-4-03","url":null,"abstract":"The parameters of the spin-polarized electronic energy spectrum of ZnSe:T crystals (T = Ti, V, Cr, Mn, Fe, Co, Ni) are studied on the basis of a 2 × 2 × 2 supercell built on the basis of a ZnSe unit cell with a sphalerite structure. The supercell contains 64 atoms, with one Zn atom replaced by one transition 3d element T. The first stage of this study is to calculate in the ideal material ZnTSe parameters of electronic energy bands, dependent on the external hydrostatic pressure. At the second stage, the effect of pressure on the parameters of the electronic energy spectrum in the ZnTSe materials is investigated, taking into account the Zn vacancy. The calculations were performed using the Abinit program. For a better description of strongly correlated 3d electrons of the element T, a hybrid exchange-correlation functional PBE0 with an admixture of the Hartree-Fock exchange potential was used, in which the self-interaction error of these electrons is removed. Based on the obtained spin-polarized electron densities of states, the magnetic moments of the supercells were also determined. A significant effect of pressure on the parameters of electronic energy zones was revealed. So, the ideal ZnTiSe material at zero pressure is a metal for both spin values, but under pressure it becomes a semiconductor. The same material with a point defect, i.e. a vacancy at the site of the Zn atom, exhibits semiconductor properties for both spin orientations at zero pressure. It was found that vacancies radically change the parameters of electronic energy bands. The magnetic moments of the supercell, as integral values of the spin-polarized densities of electronic states, also reflect these changes. Thus, in ZnTiSe material without defects, the magnetic moments of the supercell are 1.92, 2.0 and 2.0, at pressures 0, 21 and 50 GPa, respectively, while in the same material with a vacancy, the corresponding values are 0.39, 0.02 and 0.36. The ideal ZnVSe material at zero pressure is also a metal for both values of the spin moment, but in the presence of a cationic vacancy it is characterized by a pseudogap because the Fermi level is localized in the upper part of the valence band. Ideal ZnFeSe and ZnNiSe crystals are characterized by similar dependences of the electronic energy parameters on the pressure, for both spins. However, the same materials with a cationic vacancy are characterized by the Fermi level immersed in the valence band for a spin up.","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87395534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"X-Ray Induced Light Emission of Yttrium Oxide","authors":"S. Kononenko, O. Kalantaryan, V. Zhurenko, Sergii Lytovchenko, Ruslan Skyba","doi":"10.26565/2312-4334-2021-4-18","DOIUrl":"https://doi.org/10.26565/2312-4334-2021-4-18","url":null,"abstract":"The paper presents the experimental results of light radiation from Y2O3 ceramics caused by X-rays with energy up to 50 keV. The samples were made from commercial Y2O3 nanopowder by pressing and subsequent sintering in air at different temperatures from 1300 to 1500°С. Some samples sintered at 1500°C were additionally annealed at 1000°C for 10 hours. X-ray diffraction analysis of all samples did not reveal differences in the crystal structure that could be explained by heat treatment during sintering and annealing. The spectra of light emission in the wavelength range of 250-750 nm showed the presence of radiation from the electronic transitions of YO structures on the background of the luminescence of trivalent yttrium oxide. The presence of such lines of YO systems were observed also for the powder, which allows us to conclude that these structures appear on the surface of the crystallites during production. As the sintering temperature of the sample increased, the intensity of optical radiation increased. A significant difference in the effect of both temperature and sintering (annealing) time on the intensity of light emission of yttrium oxide was revealed. The intensity of the luminescent band, which is associated with the self-trapped exciton, increased with increasing thermal contribution (to estimate the contribution, we introduced a parameter equal to the product of temperature and the time of thermal action). The increase in spectral intensity in the second, third, fourth, and fifth line systems (especially for the system of lines with a maximum of λ=573.5 nm) considerably exceeded the one for self-trapped exciton. Our experimental results on the second, fourth and fifth systems of lines, which coincide well with the molecular lines YO, suggest that the heat treatment of the samples sintered from pressed Y2O3 powder leads to an increase in YO structures on the surface of the crystallites.","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88585326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Semiconductor materials selection Using IBM SPSS Statistics","authors":"","doi":"10.46632/rmc/2/4/31","DOIUrl":"https://doi.org/10.46632/rmc/2/4/31","url":null,"abstract":"","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87665423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of lung cancer using GRA method","authors":"","doi":"10.46632/rmc/2/4/40","DOIUrl":"https://doi.org/10.46632/rmc/2/4/40","url":null,"abstract":"","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87244083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Agility Evaluation of Evolutionary Algorithms Using Fuzzy TOPSIS Method","authors":"","doi":"10.46632/rmc/2/4/6","DOIUrl":"https://doi.org/10.46632/rmc/2/4/6","url":null,"abstract":"Evolutionary techniques are a horror-primarily based method to solving problems that aren't easily solved in polynomial time, for instance, classical NP-coronary heart issues and take longer to finish. Evolutionary methods are usually used to offer exact approximate solutions to problems that can't be without difficulty solved the use of different strategies. Many optimization issues fall into this class. Therefore, they need a lot of care and attention. Fuzzy TOPSIS method, a more classical MCDM one of the methods is known as and developed by Lee, the simple idea of this approach is, Selected Alternative: GA, HC, TABU, and PSH GA/HC. Evaluation Option: Solution pleasant min, Solution pleasant max, Solution high-quality implies, Solution first-class deviation, Search time (s). From the result it is seen that Solution quality max and is got the first rank whereas is the Search time (s) Got is having the lowest rank. The value of the dataset for Evolutionary Algorithms in Fuzzy TOPSIS method shows that it results in Solution quality max and top ranking.","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91117907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of Organizational Innovation in Manufacturing Companies in Era of Industry 4.0 Using the WASPAS Method","authors":"","doi":"10.46632/rmc/2/4/36","DOIUrl":"https://doi.org/10.46632/rmc/2/4/36","url":null,"abstract":"","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"19 6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76996350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-criteria Assessment of Inter-company Comparison using WASPAS Method","authors":"","doi":"10.46632/rmc/2/4/8","DOIUrl":"https://doi.org/10.46632/rmc/2/4/8","url":null,"abstract":"Adequate comparative performance of competing firms for quantitative evaluation and ranking several financial ratios must be considered simultaneously. This article is inter-institutional Examines the comparative process, A multi-criteria analysis model creates; The WASPAS approach identifies \"For assessment purposes\" Relevance of financial ratios in every financial ratio Inter-organizational Performance differences can be addressed. Through the interdependence of this assessment result is not conclusive ensures that Ratios, objective weights are used; consequently, the comparative process Conducted on a generally accepted basis and does not depend on the subjective preferences of various stakeholders. Inter-organizational In the comparative problem approach, Funding rates used the results reflect the information result shows that Comparison of objective weighting methods to other methods compares favorably with the WASPAS approach. Compare five firms (A1, A2, A3, A4, and A5) in the textile industry. A case study took this alternative approach and evaluated profitability, productivity, market position and debt ratio. A1 in 1st rank, A4 in 2nd rank, A5 in 3rd rank, A2 is at 4th rank and A3 is at 5th rank.","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76997171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"GRA Methodology for Competency Based Personnel Evaluation and Selection","authors":"","doi":"10.46632/rmc/2/4/32","DOIUrl":"https://doi.org/10.46632/rmc/2/4/32","url":null,"abstract":"","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82181770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural technology for future space systems using the MOORA method","authors":"","doi":"10.46632/rmc/2/4/20","DOIUrl":"https://doi.org/10.46632/rmc/2/4/20","url":null,"abstract":"Aerospace engineers work cecraft, or in manufacturing industries. They are primarily manufacturing, Analysis and design, research and development, and Central Govt Works for companies. Space Engineering Image Conclusion Aerospace engineering is a good career in space the industry is growing at a tremendous pace; In many fields Plenty of work for qualified aerospace engineers There are opportunities. Highest paid first in engineering An aerospace engineer is one in five professionals field. They Aircraft, spacecraft, weapons and their components Other aerospace responsible for designing and developing Proximity to engineers and staff They have their own workstations. Space The work environment of engineers is usually stressful although not effective, they are when deadlines are met Face pressure. You need to study a lot of math in aerospace engineering. In the beginning, you will start with algebra and geometry, and then you will start with advanced mathematics like calculus, trigonometry, linear algebra, differential geometry, complex analysis and numerical analysis. It is a very difficult field of study and career, but don't let that stop you from pursuing it. Firstly, engineering for aerospace engineering, many of the sciences such as technology and physics require an exceptional understanding of fields. Aeronautical Engineers Commercial Aircraft Manufacturers, Govt Working for companies and research centers. For Aeronautical Engineers the average annual salary for this job is $83,852 which is the best way? For hiring, you have experience, Demonstrate knowledge and skills. MOORA method, the first browser (2004) introduced several an optimization techniques with objectives, in which various manufacturing environments successfully solve complex decision-making problems can be used. Alternative: Sensors, Displays, Track Algorithms, and Detection. Evaluation Preference: Timeliness, Confidence, Accuracy, Throughput. As a result, performance and first rank have been achieved. Whereas accuracy is ranked low. MOORA method for drilling engineers the value of the dataset (based on ratio analysis multi-objective optimization) performance and better shows that results in rankings","PeriodicalId":76806,"journal":{"name":"Vital and health statistics. Ser. 4, Documents and committee reports","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84720514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}