Distortion of steel flat ring products during the production cycle∗

2013 ◽  
Vol 68 (2) ◽  
pp. 97-102
Author(s):  
D. Česnik ◽  
V. Bratuš ◽  
M. Bizjak
Keyword(s):  
Production Cycle ◽  
Flat Ring

Overview and initial results of the National Center for Health Statistics’ Research and Development Survey1

2020 ◽  
Vol 36 (4) ◽  
pp. 1199-1211
Author(s):  
Jennifer Parker ◽  
Kristen Miller ◽  
Yulei He ◽  
Paul Scanlon ◽  
Bill Cai ◽  
...  
Keyword(s):  
Survey Data ◽  
Evaluation Studies ◽  
Research Area ◽  
Production Cycle ◽  
Response Patterns ◽  
Health Statistics ◽  
Mode Effects ◽  
Research Areas ◽  
Statistical Agencies ◽  
Initial Results

The National Center for Health Statistics is assessing the usefulness of recruited web panels in multiple research areas. One research area examines the use of close-ended probe questions and split-panel experiments for evaluating question-response patterns. Another research area is the development of statistical methodology to leverage the strength of national survey data to evaluate, and possibly improve, health estimates from recruited panels. Recruited web panels, with their lower cost and faster production cycle, in combination with established population health surveys, may be useful for some purposes for statistical agencies. Our initial results indicate that web survey data from a recruited panel can be used for question evaluation studies without affecting other survey content. However, the success of these data to provide estimates that align with those from large national surveys will depend on many factors, including further understanding of design features of the recruited panel (e.g. coverage and mode effects), the statistical methods and covariates used to obtain the original and adjusted weights, and the health outcomes of interest.

The principles of duality in the light of the system economic theory

2019 ◽  
pp. 127-149
Author(s):  
George B. Kleiner
Keyword(s):  
Economic Theory ◽  
Economic System ◽  
External Environment ◽  
Black Box ◽  
Space Time ◽  
Production Cycle ◽  
Economic Systems ◽  
New Approach ◽  
Reproduction Cycle ◽  
Basic Concepts

This paper shows the diversity and significance of relations of duality among different economic systems. The composition of the principles underlying the system economic theory used for the analysis of duality in the economy is investigated. The concept of the economic system is clarified and the equivalence of three basic concepts of the economic system is shown: a) as a space-time volume (“black box”); b) as a complex of elements and connections among them; c) as a tetrad, including object, project, process and environment components. In a new way, the concept of the tetrad is revealed. The actual interpretation of the interrelationships of its components, based on the mechanisms of intersystem circulation of spatial and temporal resources and the transmission of abilities from one economic system to another, is proposed. On the basis of the obtained results, the most essential aspects of duality in the theory of economic systems are considered. It is shown that the interaction of internal content and the nearest external environment of economic systems lies in the nature of the relations of duality. A new approach to modeling the structure and to functioning of the economic system, based on the description of its activities in the form of two interconnected tetrads (the first tetrad reflects the intrasystem production cycle and the second one — the external realization-reproduction cycle) is put forward. It is shown that the concept of duality in a system economy creates prerequisites for adapting the functioning of local economic systems (objects, projects, etc.) in a market, administrative and functional environments and, as a result, harmonizing the economy as a whole.

Advanced Systems to Prevent Collisions of Mining Equipment and Personnel Accidents in Surface Mining

2020 ◽  
pp. 24-29
Author(s):  
A.F. Klebanov ◽  
M.V. Kadochnikov ◽  
V.V. Ulitin ◽  
D.N. Sizemov
Keyword(s):  
Human Life ◽  
Surface Mining ◽  
Production Cycle ◽  
Mining Equipment ◽  
Mining Operations ◽  
Emergency Situations ◽  
Surface Mines ◽  
Technical Requirements ◽  
Personal Devices ◽  
Blind Spots

The article addresses the issues of ensuring safe operation of mining equipment in surface mining. It describes the main factors and situations that pose a high risk to human life and health. The most dangerous incidents are shown to be related to limited visibility and blind spots for operators of mining equipment, which can result in collisions and personnel run over. The main technologies and specific solutions used to design collision avoidance systems are described and their general comparison is provided. A particular focus is placed on monitoring the health of employees at their workplace by means of portable personal devices that promptly inform the dispatcher of emergency situations. General technical requirements are formulated for designing of the system to prevent equipment collisions and personnel run over in surface mining operations. The paper emphasizes the importance of introducing a multifunctional safety system in surface mines in order to minimise the possibility of incidents and accidents throughout the entire production cycle.

High world sugar prices: is Asia’s production cycle to blame?

2010 ◽  
pp. 169-173
Author(s):  
Martin Todd
Keyword(s):  
Supply Chain ◽  
Supply And Demand ◽  
Production Cycle ◽  
Low Levels ◽  
High Level ◽  
High World

The current high world sugar prices reflect a major imbalance between global supply and demand, which has reduced stocks to very low levels. Although it remains to be seen whether prices will rise much above current values, it is clear that the supply chain will remain stretched throughout 2010 and this will help to maintain prices at a high level.

Evaluation of Zeolite-based Soilless Root Media for Potted Chrysanthemum Production

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 465e-465
Author(s):  
Janet L. Carlino ◽  
Kimberly A. Williams ◽  
Earl R. Allen
Keyword(s):  
Crop Production ◽  
Dry Mass ◽  
Nutrient Leaching ◽  
Fresh Mass ◽  
Production Cycle ◽  
Control Medium ◽  
Fertilizer Rate ◽  
Innovative Technologies ◽  
Root Media ◽  
Soluble Fertilizer

Chrysanthemum growth and nutrient leaching of three clinoptilolite-based root media, which were formulated and provided by Boulder Innovative Technologies, Inc. and ZeoponiX, Inc., were compared to the performance of control plants grown in Sunshine Mix #2 (3 peat: 1 perlite, v/v). The control received 210 mg·L–1 N from an 18N–4P–15K soluble fertilizer at each irrigation. The experimental zeolite-based medium NZ, which contained untreated zeolite and received the same soluble fertilizer as the control, leached lower concentrations of NH4-N, K, and PO4-P for most of the production cycle compared to the control. Medium EZ1 was formulated to provide N, P, and K as fertilizer nutrients and produced plants similar to the control based on ratings, height, width, and dry mass, but not fresh mass, at harvest when the fertilizer rate was half of that applied to the control, 105 mg·L–1 N. Medium EZ2, which did not receive P or K from soluble fertilizer, produced plants similar to the control based on rating, height, and dry mass, but not width or fresh mass, with soluble fertilizer input reduced to only N. Tissue N, P, and K concentrations of plants grown in media EZ1 and EZ2 were lower than those of control plants. With further refinements, these zeolite-based products show promise for decreasing nutrient leaching during crop production and allowing for application of lower rates of soluble fertilizers.

Protected Culture Systems for Strawberry Production

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 459d-459
Author(s):  
Fumiomi Takeda ◽  
Paul R. Adler ◽  
D. Michael Glenn
Keyword(s):  
Light Intensity ◽  
Fruit Size ◽  
Fruit Production ◽  
Hydroponic Culture ◽  
Production Cycle ◽  
Soilless Culture ◽  
Labor Costs ◽  
Culture Systems ◽  
Nutrient Film Technique ◽  
Plant Densities

Strawberry plants (cvs. Camarosa, Chandler, Sweet Charlie, Primetime, Jewel, and Tribute) were grown in soilless culture systems in a greenhouse from October to May. Fresh-dug and runner-tip Aplug® plants were transplanted into two systems: vertically stacked pots (24 plants/m2) containing perlite and horizontal nutrient film technique troughs (13 plants/m2). Plants were fertigated continuously with recirculating nutrient solution. In a 7-month production cycle, the plug plants bloomed earlier and produced more fruit during the first month of harvest (December) than the fresh-dug plants. Higher yields from plug plants were a result of more fruit numbers and not larger fruit size. Fruit production averaged 6.0 and 3.5 kg/m2 in the trough and pot systems, respectively. The vertical growing system allows greater plant densities, but light intensity reaching the plants in the lower sections of the tower can be less than 20% of levels measured at the top. Establishment costs of protected culture systems are higher, but production is earlier and labor costs are typically reduced. Greenhouse hydroponic culture systems could extend the winter strawberry production to more northern locations.

КОМПЛЕКС БАЗОВЫХ ТЕХНОЛОГИЧЕСКИХ ПРОЦЕССОВ ДЛЯ ПОЛУЧЕНИЯ МОЩНЫХ ПОЛЕВЫХ ТРАНЗИСТОРОВ И МИС СВЧ-ДИАПАЗОНА НА ОСНОВЕ GAN И GAAS С ИСПОЛЬЗОВАНИЕМ ОТЕЧЕСТВЕННОГО ОБОРУДОВАНИЯ

2020 ◽  
Vol 96 (3s) ◽  
pp. 343-346
Author(s):  
А.Н. Алексеев ◽  
С.И. Петров
Keyword(s):  
Ohmic Contacts ◽  
Field Effect Transistors ◽  
Production Cycle ◽  
Electronic Industry ◽  
Plasma Chemical ◽  
High Power Field ◽  
Mbe Growth ◽  
Technological Processes ◽  
Plasma Chemical Etching ◽  
Problems And Solutions

Представлены результаты разработки базовых технологических процессов, используемых при получении мощных полевых транзисторов и МИС СВЧ-диапазона на основе GaN и GaAs, таких как: выращивание гетероструктур методом МЛЭ, металлизация и отжиг омических контактов, травление мезаизоляции, затворная металлизация, пассивация диэлектриком и др. Обсуждаются основные проблемы и пути их решения, в том числе особенности технологических процессов глубокого плазмохимического травления для формирования сквозных металлизированных отверстий в SiC и GaAs. Отдельное внимание уделено вопросам обеспечения однородности и воспроизводимости и их влиянию на выход годных структур. Продемонстрированы результаты использования ряда технологических процессов в производственном цикле АО «Светлана-Рост» и других предприятий радиоэлектронной промышленности. The paper presents the results of the development of basic technological processes used in the production of microwave high-power field-effect transistors based on GaN and GaAs such as: MBE growth, metallization and annealing of ohmic contacts, etching of mesa insulation, gate metallization, passivation by dielectric etc. The main problems and solutions including features of technological processes of deep plasma-chemical etching in SiC and GaAs have been discussed. Special attention is paid to the issues of uniformity and reproducibility and their impact on the yield of structures. The results of the use of technological processes in the production cycle of Svetlana-Rost JSC and other enterprises of the radio-electronic industry have been demonstrated.

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