1JSC “Pluton”, 2 JSC Central Scientific Research Radio Engineering Institute named after Academician A.I.Berg

2021 ◽  
pp. 29-36
Author(s):  
P.A. Golovkin ◽  
A.V. Volkov ◽  
A.V. Krykov
Keyword(s):  
Appropriate Technology ◽  
Workpiece Material ◽  
Hot Plastic Deformation ◽  
Normative Documents ◽  
Synergistic Approach ◽  
Technological Transition ◽  
The Stability ◽  
The Cost ◽  
The Relationship

Currently, there are no normative documents regulating the appropriate technology of manufacturing parts from titanium alloys at the stage from hot plastic deformation to obtaining a machined (finished) part in terms of ensuring its high-quality surface and structure. Namely, the end-to-end effect of the transformations of the workpiece material on its characteristics formed through more than one technological transition, its heredity, is not tracked. This makes it difficult to achieve the desired characteristics of the final product and increases the cost of its manufacture. We studied VT6, a titanium alloy of medium strength, and found the relationship between the parameters of forging and the stability of the cutting process, the quality of the surface and the structure of the material of the resulting part. Technological solutions proposed on the basis of a synergistic approach should provide a balanced improvement of the specified parameters and eliminate the shortcomings of the original semi-finished product.

scholarly journals Stability Analysis of R&D Cooperation in a Supply Chain

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Luyun Xu ◽  
Dong Liang ◽  
Zhenjie Duan ◽  
Xu Xiao
Keyword(s):  
Game Theory ◽  
Stability Analysis ◽  
Knowledge Spillovers ◽  
Opportunistic Behavior ◽  
Collaborative Process ◽  
Level Of Knowledge ◽  
The Stability ◽  
The Cost ◽  
Inherent Quality

R&D outsourcing becomes the often-adopted strategy for firms to innovate. However, R&D cooperation often ends up with failure because of its inherent quality of instability. One of the main reasons for cooperation failure is the opportunistic behavior. As the R&D contract between firms is inherently incomplete, opportunistic behavior always cannot be avoided in the collaborative process. R&D cooperation has been divided into horizontal and vertical types. This paper utilizes game theory to study opportunistic behavior in the vertical R&D cooperation and analyzes the equilibrium of the cooperation. Based on the equilibrium and numerical results, it is found that the vertical R&D cooperation is inherently unstable, and the downstream firm is more likely to break the agreement. The level of knowledge spillovers and the cost of R&D efforts have different effects on firms’ payoffs. When the level of knowledge spillover is low or the cost of R&D efforts is high, mechanisms such as punishment for opportunism may be more effective to guarantee the stability of cooperation.

scholarly journals SERVICE IMPLEMENTATION OF CONSUMER INTEREST IN TEBING TINGGI BUSINESS CLINIC SUMATERA UTARA

2020 ◽  
Vol 8 (9) ◽  
pp. 200-208
Author(s):  
M. Umar Maya Putra ◽  
Syafrida Damanik
Keyword(s):  
Small And Medium Enterprises ◽  
Research Result ◽  
Service Needs ◽  
Ratio Data ◽  
International Exhibitions ◽  
The Government ◽  
Medium Enterprises ◽  
The Cost ◽  
The Relationship

This research begins with the development of MSMEs (Micro, Small and Medium Enterprises) which is an illustration of strengthening regional potential. Developing MSMEs can improve services to consumers in order to create buying interest. The benchmarks that are assessed through the level of confidence in a product directly aim to analyze customer interest. In this study, it is explained that customer interest is product quality, service quality, price, and cost which are closely related to meeting the service needs of the Tebing Tinggi Business Clinic (KLIBI) assisted them. The method used is the canonical analysis method which is a multivariate model that studies the relationship between the dependent variable set varied from the independent variable set. The data characteristics for canonical correlation are metric data, namely interval or ratio data. The research result gained that responsiveness and concern give the significant effect on the cost so that customers want to buy continuously. For the recommendation, The Government needs to improve the quality of product endorsement among Tebing Tinggi and Indonesian consumers by making the program business promotion and international exhibitions through KLIBI.

scholarly journals Do We Get What We Pay For? Examining the Relationship Between Payments and Clinical Outcomes in High-Volume Elective Surgery in a Commercially-Insured Population

2020 ◽  
Vol 57 ◽  
pp. 004695802096878
Author(s):  
Madison Arenchild ◽  
Anaeze C. Offodile ◽  
Lee Revere
Keyword(s):  
Elective Surgery ◽  
High Volume ◽  
Quality Of Healthcare ◽  
Healthcare Services ◽  
Care Provision ◽  
Quality Outcomes ◽  
Prolonged Length ◽  
The Cost ◽  
The Relationship

Studies evaluating the cost and quality of healthcare services have produced inconsistent results. We seek to determine if higher paid hospitals have higher quality outcomes compared to those receiving lower payments, after accounting for clinical and market level factors. Using inpatient commercial claims from the IBM® MarketScan® Research Databases, we used an ordinal logistic regression to analyze the association between hospital median payments for elective hip and knee procedures and 3 quality outcomes: prolonged length of stay, complication rate, and 30-day readmission rate. Patient-level and market factor covariates were appropriately adjusted. Hospital-level payments were found to be not significantly correlated with hospital quality of care. This research suggests that higher payments cannot predict higher quality outcomes. This finding has implications for provider-payer negotiations, value-based insurance designs, strategies to increase high-value care provision, and consumer choices in an increasingly consumer-oriented healthcare landscape.

scholarly journals Study of cylindrical brush wear effect on its elastic characteristics, on required pressing force and on pressure at the outlet of hydraulic pneumatic accumulator for controlling position of chipping working body

2021 ◽  
Vol 18 (1) ◽  
pp. 106-119
Author(s):  
S. I. Tsekhosh ◽  
B. V. Zhuravsky ◽  
P. I. Tsekhosh
Keyword(s):  
Contact Spot ◽  
Surface Cleaning ◽  
Software Environment ◽  
Pressing Force ◽  
Software Product ◽  
Wear And Tear ◽  
The Cost ◽  
The Relationship ◽  
Elastic Characteristics

Introduction. The article is devoted to a current issue of improving the quality of road surface cleaning and increasing the resource of brush working equipment. Improving the quality of cleaning and the resource of the brush working equipment will reduce the cost of operating a communal machine. In the process of operation, the pile of the cylindrical brush is worns out, while its elastic characteristics change, which is reflected in the required pressing force to maintain the most favorable value of the width of the contact spot from the condition of ensuring high quality cleaning and minimal intensity of pile wear.Materials and methods. The results of studies of the interaction of the pile of a cylindrical brush with the surface to be cleaned are presented at various degrees of wear of the brush pile. The research results are presented in analytical and graphical forms. The calculations were carried out using the Microsoft Excel software product and the Mathkad software environment for mathematical calculations.Results. The paper shows the dependence of the degree of wear of the pile of the brush working equipment on the actual radius of the cylindrical brush. The relationship between the width of the contact spot and the deformation of the cylindrical brush at different degrees of wear and tear is shown as a graph.The influence of the degree of wear on the elastic characteristics of the brush working equipment is considered. The dependences of the average stiffness coefficient on the degree of wear of the pile of a cylindrical brush, as well as the required pressing force on the degree of wear at different values of the width of the contact patch of the cylindrical brush are given.

scholarly journals Morphology of Cleaved Surface and Observation of In Situ Crack Propagation During Cleaving

2021 ◽  
Vol 15 (4) ◽  
pp. 483-491
Author(s):  
Soshi Iwatsuki ◽  
Hirofumi Hidai ◽  
Souta Matsusaka ◽  
Akira Chiba ◽  
Noboru Morita ◽  
...  
Keyword(s):  
Crack Propagation ◽  
High Speed ◽  
Workpiece Material ◽  
Jet Cooling ◽  
Cleavage Line ◽  
The Relationship ◽  
Glass Edge ◽  
Polarization Camera

In laser cleaving, the thermal stress caused by laser heating and water-jet cooling propagates previously induced cracks in the workpiece material. The laser-cleaving conditions affect the quality of the fracture surface, and therefore, elucidating the relationship between the cleaved surface, cleaving conditions, and crack propagation is essential. Against this backdrop, in this study, we investigated the morphology of the cleaved surface and visualized the crack propagation and stress in situ using a high-speed polarization camera. The distance between the glass edge and cleaved surface was varied. When the laser-cleavage line was close to the glass edge, twist hackles were formed on the cleaved surface. The area in which the twist hackles formed on the cleaved surface coincided with the lagging section of the crack front. Furthermore, the twist hackle reached the specimen surface, and the edge of the surface exhibited a sawtooth shape. Observations with the high-speed polarization camera revealed that the internal stress was asymmetric with respect to the crack when the twist hackles were formed.

scholarly journals Simulation of the System of Repairs of Apartment Buildings

2019 ◽  
Vol 97 ◽  
pp. 03016
Author(s):  
Serafima Sokova ◽  
Vladimir Kalinin
Keyword(s):  
Housing Stock ◽  
Integrated Approach ◽  
Safe Operation ◽  
Apartment Buildings ◽  
Current State ◽  
The Cost ◽  
Relationship Of ◽  
The Relationship ◽  
Real State

the main issue of the study is the problem of improving the efficiency of the housing sector. The current state system does not ensure the proper efficiency of the housing stock, which is increasingly manifested in the growing gap between the cost of operation of apartment buildings, aimed at ensuring the quality of their functioning and the real state of this quality. In recent years, numerous regulatory documents have been adopted to ensure the normal maintenance of buildings, but a comprehensive understanding of the relationship of various activities with technical and economic solutions, in most cases, has an empirical nature, not confirmed by a strict analytical justification. The purpose of the study is a systematic integrated approach to solving problems to improve the efficiency of maintenance of housing using the proposed mathematical apparatus, which allows you to objectively, fully and accurately assess the relationship of economic and technical indicators. All total socially significant economic indicators of operational measures can be the basis of legislative regulation in the industry. Conclusions: criteria for assessing the effective and safe operation of buildings, optimal for residents of apartment buildings and management companies serving these houses.

scholarly journals Multiple-criteria decision analysis for cross-country gas pipelines

2019 ◽  
Vol 102 ◽  
pp. 03010 ◽  
Author(s):  
Mikhail Sukharev ◽  
Ruslan Popov ◽  
Anton Balchenko
Keyword(s):  
Gas Production ◽  
Optimization Task ◽  
Gas Pumping ◽  
The Stability ◽  
Production Capacities ◽  
The Cost ◽  
Gas Fields ◽  
Planning Problems ◽  
Gas Supply

The paper considers the shortand medium-term planning problems of the regimes of multi-line technical gas pipeline corridors (MLGP) of Russian gas supply system. The fall in gas production due to the depletion of the gas fields leads to a decrease in the load of some operating MLGPs. At the same time, there is a redundancy of production capacities at compressor stations (CS). It becomes possible to use various technological schemes for incorporating CS with lines "pass by" in order to reduce the cost of gas pumping. The solution of the optimization task for the search for MLGP regimes in a one-criterion (minimum of the energy cost) formulation leads to frequent equipment switching. That is unacceptable. Therefore, it is advisable to proceed to multi-criteria statements, formalizing and introducing as criteria the requirements for the stability of technological schemes for switching on equipment, which are usually respected by the dispatch services. The purpose of this article is the development and testing of mathematical models and a computer program to support the adoption of dispatch solutions for managing modes of large MLGPs under conditions of incomplete loading. The solution method is demonstrated by the example of a three-line MLGP. The choice of optimal control is carried out using dynamic programming methods. In order to improve the quality of the choice of control actions, an algorithm is suggested that takes into account the stochastic nature of the loading of the MLGP.

Planning a geostatistical survey for mapping soil micronutrients: eliciting sampling densities

2021 ◽  
Author(s):  
Alice Milne ◽  
Christopher Chagumaira ◽  
Murray Lark
Keyword(s):  
Spatial Prediction ◽  
Field Work ◽  
Sampling Density ◽  
Kriging Variance ◽  
Micronutrient Status ◽  
Sample Density ◽  
Mapping Process ◽  
The Cost ◽  
The Relationship

<p>When planning a geochemical survey, it is necessary to make decisions about the sampling density. Sampling density determines both the quality of predictions and the cost of field work. In geostatistical surveys, the relationship between sampling density and map quality, as measured by the kriging variance (mean square error of the prediction) can be computed. When the variogram is known, then the kriging variance at an unsampled site depends only on the spatial distribution of sampling points around that site. It is therefore possible to find the sample density such that the kriging variance is limited to acceptable values. However, the implications of kriging variances are not always straightforward for decision makers or sponsors of survey to understand. Here we present an alternative method to help end-users assess the implications of uncertainty in spatial prediction in so far as this is controlled by sampling.  It is called the offset correlation and is a measure of how far the mapped spatial variation depends on the positioning of a reqular square sampling grid.  The offset correlation increases as the uncertainty in the map, attributable to sample density, decreases.  It is bounded on the interval [0,1], which makes it intuitively easy to interpret as an uncertainty measure.  In this presentation we shall explain the offset correlation concept, illustrate it with some test cases, and provide session participants with an opportunity to join an elicitation of sampling density for a hypothetical survey of soil micronutrient status.</p><p>The offset correlation is an intuitive measure of the precision of a geostatistical mapping process because people can more easily grasp bounded measures like a correlation than unbounded ones like a variance.</p>

" Management of human talent and its relationship to enhance the competitive advantage of some sports federations in the Egyptian and Bahraini societies "

2019 ◽  
Vol 7 (2) ◽  
pp. 21-33
Author(s):  
Hasan Ahmad Alshafea ◽  
Abdelrahman Ahmad Saear ◽  
Abdelrahman Mohamad Megahed
Keyword(s):  
Competitive Advantage ◽  
Positive Relationship ◽  
Talent Management ◽  
Core Sample ◽  
Board Members ◽  
The Difference ◽  
The Cost ◽  
The Relationship

The study aimed to identify the relationship between talent management and enhancing the competitive advantage of some sports federations in the Egyptian and Bahraini societies, in addition to the difference in this according to the variables of both experience and level of employment. To achieve this, the researchers used both Talent Management and Competitive Advantage quetionair as a tool to collect data and information from a sampling sample of (50) and a core sample of (247) board members and employees of Egyptian and Bahraini sports federations. The results of the study showed that there is no relationship between the methods of managing human talent between the Egyptian and Bahrain sports federations. There is a positive relationship in the quality of talent in the Bahraini unions and creativity in the Egyptian and Bahraini federations. The results also indicate that there is no difference between the Bahraini and Egyptian federations in the management of sports talents and the promotion of competitive advantage due to the variables of experience and level of employment. Researchers have recommended that specific criteria be used to attract sports talent and retain competencies to reduce the cost of spending on sports talent.

Retreat from the Male: Catullus 62 and Sappho's Erotic Flowers

Ramus ◽  
1977 ◽  
Vol 6 (2) ◽  
pp. 83-102 ◽  
Author(s):  
Eva Stehle Stigers
Keyword(s):  
Sexual Intimacy ◽  
Short Life ◽  
Narcissistic Personality ◽  
The Stability ◽  
The One ◽  
Relationship Of ◽  
The Relationship ◽  
The Ideal

Catullus described a full emotional circle in his short life from delight in unconstrained aesthetic sensuality free of socially-defined patterns (cc. 5, 6, 13 for example) to longing for a stable bond in the relationship of man to woman. He pictured such a bond as placed within the traditional Roman frame of marriage and home, but cast in a personal mold; he wanted to preserve his aesthetic and sensual response to a woman while combining it somehow with the stability and intimacy appropriate to friendship (amare and bene velle). Poems 72 and 87, for instance, directly express the ideal in acknowledging its absence from Catullus' relations with Lesbia.Catullus liked to feel that the possibility of complete union was what he offered Lesbia. Perhaps it was his inability to fashion a compelling synthesis of sexual intimacy and friendship with her that led him to write a series of poems exploring attempts, mainly failures, at full reciprocal love. The successful attempts are idyllic or mythic (Septimius and Acme, Peleus and Thetis, neither unambiguously positive). The failures come, in Catullus' portrayal, when union founders on the obstacle of the narcissistic personality, the man or woman unable to forfeit autonomy, desirous of holding others in thrall without being himself held. Catullus' highly developed sensitivity to narcissism must be a reaction to its prominence in the character of a certain kind of sexually attractive individual, the one who is alluring but uncapturable, the kind of woman, like Lesbia, with whom Catullus sought union. Catullus conveys the quality of narcissism in such a character in part through the image of the flower (appropriately, considering the source of the modern name for it).

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