Automatic systems for stabilising the mercerising modulus and degree of ram-pressing in the viscose cord process

1971 ◽  
Vol 2 (4) ◽  
pp. 381-382
Author(s):  
Yu. A. Mitrofanov ◽  
I. Z. Lolenko
Keyword(s):  
Viscose Cord ◽  
Automatic Systems

Current aspects of managing the bank’s cash liquidity in terms of minimizing cash circulation

2021 ◽  
Vol 27 (2) ◽  
pp. 133-138
Author(s):  
E. Prokofieva ◽  
Keyword(s):  
Banking Sector ◽  
Cash Flows ◽  
Current Situation ◽  
Advantages And Disadvantages ◽  
Processing Data ◽  
Modern Economy ◽  
Automatic Systems ◽  
Primary Impact ◽  
Banking Operations

The article is devoted to the problem of the banks’ participation in improving the efficiency of the organization of cash circulation, which does not lose its relevance in the modern economy. In the current situation, despite the growth in the volume and share of non-cash payments, the demand for cash is characterized by stability. The article focuses on the features, advantages and disadvantages of the reducing cash circulation process. It is noted that the primary impact on cash circulation is made by settlements made by individuals. In this regard, the study focuses on the fundamental changes in this direction that are taking place in the banking sector. This is, first of all, the reduction of cash withdrawals from plastic cards and the growth of non-cash payments with their use, the lack of growth of the card market; increase in electronic terminals and reduce the number of ATMs installed. At the same time, it is emphasized that one of the main areas that determine both the liquidity and profitability of the bank is the regulation of cash balances. With the number of banks operating in the economy shrinking, the struggle for customers is becoming more acute. The satisfaction of the latter with the quality of the bank’s services, including in terms of settlement liquidity, should be considered as one of the primary factors that ensure the effectiveness of a significant number of banking operations. In this context, special attention is paid to the specifics of the bank’s actions to optimize cash flows, which requires the use of specialized automatic systems that allow processing data on cash balances and turnover to form forecasts that optimize the collection schedule and reduce ATM downtime due to lack of funds

Comparing semi-automatic systems for recruitment of patients to clinical trials

2011 ◽  
Vol 80 (6) ◽  
pp. 371-388 ◽  
Author(s):  
Marc Cuggia ◽  
Paolo Besana ◽  
David Glasspool
Keyword(s):  
Clinical Trials ◽  
Automatic Systems

Production of viscose cord fibre and 17C and 22C cord fabrics

1972 ◽  
Vol 2 (6) ◽  
pp. 538-539
Author(s):  
V. I. Khrulev ◽  
G. A. Maksimova ◽  
A. G. Arseenko ◽  
R. G. Ermolaeva ◽  
V. P. Abramenko
Keyword(s):  
Cord Fibre ◽  
Viscose Cord

scholarly journals Use of BACTEC MGIT 960 for Recovery of Mycobacteria from Clinical Specimens: Multicenter Study

1999 ◽  
Vol 37 (11) ◽  
pp. 3578-3582 ◽  
Author(s):  
Enrico Tortoli ◽  
Paola Cichero ◽  
Claudio Piersimoni ◽  
M. Tullia Simonetti ◽  
Giampietro Gesu ◽  
...  
Keyword(s):  
Oxygen Sensor ◽  
Solid Medium ◽  
Automated System ◽  
Contamination Rate ◽  
Mycobacterial Species ◽  
Solid Media ◽  
Mycobacterium Xenopi ◽  
Significant Difference ◽  
Lowenstein Jensen ◽  
Automatic Systems

The BACTEC MGIT 960 instrument is a fully automated system that exploits the fluorescence of an oxygen sensor to detect growth of mycobacteria in culture. Its performance was compared to those of the radiometric BACTEC 460 instrument and egg-based Lowenstein-Jensen medium. An identical volume of sample was inoculated in different media, and incubation was carried out for 6 weeks with the automatic systems and for 8 weeks on solid media. A total of 2,567 specimens obtained from 1,631 patients were cultured in parallel. Mycobacteria belonging to nine different taxa were isolated by at least one of the culture systems, with 75% of them being represented byMycobacterium tuberculosis complex. The best yield was obtained with the BACTEC 460 system, with 201 isolates, in comparison with 190 isolates with the BACTEC MGIT 960 system and 168 isolates with Lowenstein-Jensen medium. A similar but not significant difference was obtained when the most-represented organisms, the M. tuberculosis complex, Mycobacterium xenopi, and theMycobacterium avium complex, were analyzed separately and when combinations of a solid medium with the BACTEC MGIT 960 system and with the BACTEC 460 system were considered. The shortest times to detection were obtained with the BACTEC MGIT 960 system (13.3 days); 1.5 days earlier than that with the BACTEC 460 system (14.8 days) and 12 days earlier than that with Lowenstein-Jensen medium (25.6 days). The BACTEC MGIT 960 system had a contamination rate of 10.0%, intermediate between those of the radiometric system (3.7%) and the egg-based medium (17.0%). We conclude, therefore, that the BACTEC MGIT 960 system is a fully automated, nonradiometric instrument that is suitable for the detection of growth of tuberculous and other mycobacterial species and that is characterized by detection times that are even shorter than that of the “gold standard,” the BACTEC 460 system. The contamination rate was higher than that for the radiometric BACTEC 460 system and needs to be improved.

Synthesis of a High-Precision Missile Homing System with an Permissible Stability Margin of the Normal Acceleration Stabilization System

2021 ◽  
Vol 22 (7) ◽  
pp. 365-373
Author(s):  
Quang Thong Do
Keyword(s):  
High Precision ◽  
Parametric Optimization ◽  
Stability Margin ◽  
Optimization Method ◽  
Synthesis Process ◽  
Stabilization System ◽  
Gain Margin ◽  
The Stability ◽  
Automatic Systems ◽  
Normal Acceleration

The proportional guidance method-based missile homing systems (MHS) have been widely used the real-world environments. In these systems, in order to destroy the targets at different altitudes, a normal acceleration stabilization system (NASS) is often utilized. Therefore, the MHS are complex and the synthesis of these systems are a complex task. However, it is necessary to synthesize NASS during the synthesis of the MHS. To simplify the synthesis process, a linear model of the NASS is used. In addition, we make use of the available commands in Control System Toolbox in MATLAB. Because the Toolbox has the commands to describe the transfer function, determine the stability gain margin, and the values of the transient respond of the linear automatic systems. Thus, this article presents two methods for synthesizing the missile homing systems, including (i) a method for synthesizing the MHS while ensuring the permissible stability gain margin of the NASS, and (ii) a method for synthesizing the MHS while ensuring the permissible stability margin of the NASS by overshoot. These techniques are very easy to implement using MATLAB commands. The synthesis of the proposed MHS is carried out by the parametric optimization method. To validate the performance of the proposed techniques, we compare them withthe MHS synthesized by ensuring the stability margin of the NASS bythe oscillation index. The results show that, two our proposed methods and the existing method provide the same results in terms of high-precision. Nevertheless, the proposed methods are simple and faster than the conventional method. The article also investigates the effect of gravity, longitudinal acceleration of the rocket, andblinding of the homing head on the accuracy of the synthesized MHS. The results illustrate that they have a little effect on its accuracy.

Study of Dynamic Modes of Current Stabilization Systems of Powerful Electromagnets with Pulse-Width Modulation

2021 ◽  
Vol 22 (6) ◽  
pp. 313-320
Author(s):  
M. S. Lur’e ◽  
O. M. Lur’e ◽  
A. S. Frolov
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Functional Differential Equations ◽  
Original System ◽  
Nyquist Stability ◽  
Detailed Assessment ◽  
Functional Differential ◽  
The Stability ◽  
Automatic Systems ◽  
A Current

This study is devoted to the consideration of a method for assessing the stability of systems with pulse-width modulation, based on the linearization of its equivalent system with pulse-width modulation. An approximate study of the dynamic modes of operation of systems with pulse-width modulation, taking into account the stability for the system of automatic control of the supply current of electromagnets under the conditions of external and internal interference, is carried out. Variants of execution of schemes of pulse-width regulators for the power supply of an electromagnet based on a unipolar and bipolar element with pulse-width modulation are presented. The possibility of linearization of systems with pulse-width modulation for the subsequent detailed assessment of the stability of such systems is shown. The prospects of using functional differential equations for stability analysis of automatic systems with pulse-width modulation are shown. The frequency characteristics of an equivalent pulse system are analyzed using the example of a current stabilization system of high-power electromagnets with a pulse-width regulator, taking into account the replacement of the latitude modulation by the amplitude one. Based on the analysis of the resulting transfer function, which is a stable linearized equivalent open system, the ways of evaluating the stability of the original system with pulse-width modulation using the Nyquist stability criterion are proposed. The conclusion is made about the advantage of a system with PWM, in relation to a system with AIM, in terms of stability, and recommendations are given for the use of the obtained data in the analysis oftransients in such systems.

Sign in / Sign up

Export Citation Format

Share Document