scholarly journals ANALYSIS OF SENSITIVITY OF TARGET TRACKING SYSTEMS TO EXTERNAL INTERFERENCE IN MULTICHANNEL RADARS WITH FIXED PARAMETERS

2021 ◽  
Vol 5 (1) ◽  
pp. 82-86
Author(s):  
Andrii Kovalchuk ◽  
Mykola Oleshchuk ◽  
Volodymyr Karlov ◽  
Oleh Karpenko ◽  
Oksana Biesova ◽  
...  
Keyword(s):  
Tracking Error ◽  
Surveillance Systems ◽  
Tracking Systems ◽  
External Interference ◽  
External Influences ◽  
Control Functions ◽  
Stealth Technology ◽  
Long Duration ◽  
Angular Coordinates ◽  
And Control

The multichannel and fixed parameters radars for tracking targets with the phased array antennas are widely used in modern military surveillance systems. The modular integration of a phased antenna array with digital processors allows to realize the command and control functions of antenna patterns for tracking multiple targets in the time resolution modes. Tracking of the air targets in range, radial speed and angular coordinates of evaluations and azimuth is provided by means of the multichannel radars without adaptation modes to the characteristics of external influences. Thus, adjusting the algorithms of tracking systems to the maximum maneuverability of the air targets can lead to a significant reduction in the accuracy of surveillance in comparison with the potentially achievable accuracy for such radars of tracking the linear flight targets in the long duration of time. In the case of adjusting the algorithms of tracking systems to either low intensity of flying targets, or lack of the aircraft maneuvering, it is possible to significantly increase the error of the aircraft flying information, and as a result to have a disruption of tracking the air targets. The increase in the parameters of the tracking error in relation to the influence of external interference were obtained as a result of the study. As a result of research, it is possible to assess the feasibility of adapting to certain characteristics of external influences, and provide recommendations for selecting and fixing the parameters of algorithms of tracking systems to ensure their versatility to surveillance targets with both high maneuverability, and implementing the stealth technology.

administrasi ketatausahaan sekolah

2020 ◽  
Author(s):  
Isra Revenia
Keyword(s):  
Information Needs ◽  
Control Functions ◽  
Definition Of ◽  
The Right ◽  
And Control

This article is made to know the destinantion and the administrasi functions of the school in order to assist the leader of an organazation in making decisions and doing the right thing, recording of such statements in addition to the information needs also pertains to the function of accountabilitty and control functions. Administrative administration is the activity of recording for everything that happens in the organization to be used as information for leaders. While the definition of administration is all processing activities that start from collecting (receiving), recording, processing, duplicating, minimizing and storing all the information of correspondence needed by the organization. Administration is as an activity to determine everything that happens in the organization, to be used as material for information by the leadership, which includes all activities ranging from manufacturing, managing, structuring to all the preparation of information needed by the organization.

scholarly journals A large outbreak of influenza A and B on a cruise ship causing widespread morbidity

2003 ◽  
Vol 130 (2) ◽  
pp. 263-271 ◽  
Author(s):  
J. M. L. BROTHERTON ◽  
V. C. DELPECH ◽  
G. L. GILBERT ◽  
S. HATZI ◽  
P. D. PARASKEVOPOULOS ◽  
...  
Keyword(s):  
Influenza Vaccination ◽  
Influenza A ◽  
Surveillance Systems ◽  
Cruise Ship ◽  
Influenza Like Illness ◽  
Antiviral Therapies ◽  
Intervention Measures ◽  
Large Outbreak ◽  
And Control ◽  
Control Study

In September 2000 an outbreak of influenza-like illness was reported on a cruise ship sailing between Sydney and Noumea with over 1100 passengers and 400 crew on board. Laboratory testing of passengers and crew indicated that both influenza A and B had been circulating on the ship. The cruise coincided with the peak influenza period in Sydney. Morbidity was high with 40 passengers hospitalized, two of whom died. A questionnaire was sent to passengers 3 weeks after the cruise and 836 of 1119 (75%) responded. A total of 310 passengers (37%) reported suffering from an influenza-like illness (defined as cough, fever, myalgia and weakness) and 528 (63%) had seen a doctor for illness related to the cruise. One-third of passengers reported receipt of influenza vaccination in 2000; however neither their rates of influenza-like illness nor hospitalization were significantly different from those in unvaccinated passengers. A case–control study also found no significant protective effect of influenza vaccination. With the increasing popularity of cruise vacations, such outbreaks are likely to affect increasing numbers of people. Whilst influenza vaccination of passengers and crew may afford some protection, uptake and effectiveness may not be sufficient to prevent outbreaks. Surveillance systems and early intervention measures, such as antiviral therapies, should be considered to detect and control such outbreaks.

Development of Hardware In-the-Loop Simulation System for Testing Operation and Control Functions of Microgrid

2010 ◽  
Vol 25 (12) ◽  
pp. 2919-2929 ◽  
Author(s):  
Jin-Hong Jeon ◽  
Jong-Yul Kim ◽  
Hak-Man Kim ◽  
Seul-Ki Kim ◽  
Changhee Cho ◽  
...  
Keyword(s):  
Simulation System ◽  
Hardware In The Loop ◽  
Control Functions ◽  
And Control

scholarly journals Design and Control of a Magnetically Suspended Ceiling Actuator with Infinite Planar Stroke

2013 ◽  
Vol 416-417 ◽  
pp. 492-502 ◽  
Author(s):  
T.T. Overboom ◽  
J.P.C. Smeets ◽  
J.W. Jansen ◽  
E.A. Lomonova
Keyword(s):  
Permanent Magnet ◽  
Analytical Model ◽  
Normal Force ◽  
Tracking Error ◽  
Fe Model ◽  
Optimized Design ◽  
Three Phase ◽  
Linear Actuators ◽  
And Control ◽  
Infinite Planar

This paper presents the design and control of a magnetically suspended ceiling actuator which combines four iron-cored linear actuators and a checkerboard permanent magnet array for an infinite planar stroke. When the actuators are rotated with respect to the PM array, it is shown that the thrust and normal force produced by the three-phase linear actuators can be controlled by applying Park's transformation. The design of the iron-cored linear actuators is optimized for minimum losses when the translator inside the ceiling actuator and a payload are accelerated in the xy-plane. The optimization is performed using an analytical model is. Simulations of the optimized design with a 3D FE-model, show a maximum tracking error of 1 μm and rotations of 30 μrad when the translator is moved and controlled in 6 DOF.

MONITORING OF GOODS TURNOVER AS A SPECIAL FORM OF STATE CONTROL

2021 ◽  
pp. 108-113
Author(s):  
E. G. Kovalenko
Keyword(s):  
Information System ◽  
Special Form ◽  
The State ◽  
State Control ◽  
Information Function ◽  
State Information ◽  
Control Functions ◽  
And Control

The article studies the features of monitoring of goods turnover, including marking of goods, as well as turnover in the state information system of monitoring over turnover of goods involved in the relations of the operator issuing the codes, marking, collecting information, its storage and provision. The marking functions are defined: the function of analysis of wholesale and retail turnover, information function, identifying and control functions

scholarly journals Governmental surveillance system of healthcare-associated infection in Brazil

2014 ◽  
Vol 48 (4) ◽  
pp. 657-662 ◽  
Author(s):  
Cassimiro Nogueira Junior ◽  
Maria Clara Padoveze ◽  
Rúbia Aparecida Lacerda
Keyword(s):  
Surveillance System ◽  
Surveillance Systems ◽  
Healthcare Associated Infection ◽  
Cross Sectional ◽  
Southern States ◽  
Governmental Surveillance ◽  
Minimum Requirements ◽  
Two Phases ◽  
Healthcare Associated ◽  
And Control


Objective: This study aimed to describe the structure of governmental surveillance systems for Healthcare Associated Infection (HAI) in the Brazilian Southeastern and Southern States. Method: A cross-sectional, descriptive and exploratory study, with data collection by means of two-phases: characterization of the healthcare structure and of the HAI surveillance system. Results: The governmental teams for prevention and control of HAI in each State ranged from one to six members, having at least one nurse. All States implemented their own surveillance system. The information systems were classified into chain (n=2), circle (n=4) or wheel (n=1). Conclusion: Were identified differences in the structure and information flow from governmental surveillance systems, possibly limiting a nationwide standardization. The present study points to the need for establishing minimum requirements in public policies, in order to guide the development of HAI surveillance systems.


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