scholarly journals Performance analysis of a complex repairable system with two subsystems in series configuration with an imperfect switch

2020 ◽  
Keyword(s):  
Performance Analysis ◽  
Repairable System ◽  
In Series ◽  
Series Configuration

Performance Analysis of Multi-computer System Consisting of Three Subsystems in Series Configuration Using Copula Repair Policy

2020 ◽  
Vol 1 (5) ◽  
Author(s):  
Ibrahim Yusuf ◽  
Abdulkareem Lado Ismail ◽  
V. V. Singh ◽  
U. A. Ali ◽  
Nasir Ahmad Sufi
Keyword(s):  
Performance Analysis ◽  
Computer System ◽  
In Series ◽  
Series Configuration

scholarly journals Determining the environmental indicators for vehicles of different categories in relation to CO2 emission based on road tests

2017 ◽  
Vol 170 (3) ◽  
pp. 66-72
Author(s):  
Jerzy MERKISZ ◽  
Łukasz RYMANIAK
Keyword(s):  
Co2 Emissions ◽  
Operating Time ◽  
Environmental Indicators ◽  
Operating Conditions ◽  
Si Engine ◽  
Propulsion Systems ◽  
System A ◽  
In Series ◽  
Series Configuration ◽  
Ci Engine

The article discusses the possibility of determining the environmental indicators for vehicles of different categories in relation to CO2 emissions. These are called toxicity indicators because they concern the compounds: CO, THC and NOx. Three Euro V compliant vehicles with different propulsion systems types were used for the study: a 0.9 dm3 urban passenger car with a SI engine and a start-stop system, a 2.5 dm3 off-road vehicle with a CI engine, and a city bus with a hybrid drive system in series configuration and a CI engine with a displacement of 6.7 dm3. Measurements were made in actual operating conditions in the Poznan agglomeration using a portable emissions measurement system (PEMS). The paper presents the characteristics of the operating time shares of vehicles and propulsion systems as well as CO2 emissions depending on the engine load and crankshaft rotational speed for individual vehicles. The determined toxicity indicators allowed to indicate their usefulness, to make comparisons between tested vehicles, and to identify directions for further work on the application and interpretation of these indicators.

MICROWAVE MEMS SWITCHES IN SERIES CONFIGURATION: TECHNOLOGY AND CIRCUITAL MODELING

2005 ◽  
Author(s):  
R. MARCELLI ◽  
F. GIACOMOZZI ◽  
B. MARGESIN ◽  
G. BARTOLUCCI ◽  
G. MINUCCI
Keyword(s):  
Mems Switches ◽  
In Series ◽  
Series Configuration

scholarly journals Probabilistic Assessment of Computer-Based Test (CBT) Network System Consists of Four Subsystems in Series Configuration Using Copula Linguistic Approach

2021 ◽  
Author(s):  
Vijay Vir Singh ◽  
Abdul Kareem Lado Ismail ◽  
Ibrahim Yusuf ◽  
Ameer Hassan Abdullahi
Keyword(s):  
Network System ◽  
Transition Diagram ◽  
In Series ◽  
Series Configuration ◽  
Computer Based ◽  
Parallel Configuration ◽  
Load Balancer ◽  
The Cost ◽  
The Impact ◽  
Database Servers

A complex repairable computer-based test (CBT) network system studied in this paper consists of three client computers, a load balancer, two database servers, with the centralized server structured in a series configuration. Subsystem 1 consists of three homogeneous clients arranged in parallel configuration, subsystem 2 comprises a load balancer, subsystem 3 is comprised of two distributed homogeneous database servers in parallel arrangement and subsystem 4 consists of a centralized database server. Through the transition diagram, the first-order differential equations are derived. The model has solved using supplementary variables, with implications of Laplace transforms. Reliability metrics of system effects such as availability, reliability, MTTF, MTTF sensitivity, and the cost function is estimated to see the impact of failure and repair patterns on reliability evaluations. The results of this study indicated that system performance could be improved when the copula repair is employed.

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