Microscope: Pinpoint Performance Issues with Causal Graphs in Micro-service Environments

2018 ◽  
pp. 3-20 ◽  
Author(s):  
Jinjin Lin ◽  
Pengfei Chen ◽  
Zibin Zheng
Keyword(s):  
Causal Graphs ◽  
Performance Issues ◽  
Service Environments

Review of Enhancing Human Performance: Issues, Theories, and Techniques.

1988 ◽  
Vol 33 (8) ◽  
pp. 727-728
Author(s):  
Sheldon Zedeck
Keyword(s):  
Human Performance ◽  
Performance Issues

scholarly journals The durability of flexible eddy current array (FECA) sensors in harsh service environments

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yujian Song ◽  
Tao Chen ◽  
Ronghong Cui ◽  
Yuting He ◽  
Xianghong Fan ◽  
...  
Keyword(s):  
Eddy Current ◽  
Fatigue Cracks ◽  
Radiation Environment ◽  
The Finite Element Method ◽  
Integrated Sensor ◽  
High Durability ◽  
Vibration Experiment ◽  
Service Environments ◽  
Salt Fog Corrosion ◽  
Salt Fog

AbstractSensors for structural health monitoring (SHM) need to be permanently integrated on structures and withstand the harsh service environments, which has been a big challenge for the application of SHM in aircrafts. This paper focuses on the durability of flexible eddy current array (FECA) sensors in harsh service environments of aircrafts, including vibration environment and several typical exposed environments. First, a kind of FECA sensor is illustrated and its integration method is proposed. Moreover, in order to study the durability of the sensor in vibration environment, the modal analysis is performed by the finite element method. According to the simulation results, the durability experiment in vibration environment is carried out under the fourth order vibration mode, which makes the sensor suffer the harshest vibration loads. During the vibration experiment, output signals of the sensor keep stable and the sensor is well bonded to the structure, which shows the integrated sensor has high durability in vibration environment. Finally, the durability of integrated sensors is separately tested in three exposed environments, including salt fog corrosion environment, fluid immersion environment, as well as hygrothermal and ultraviolet-radiation environment. After these environmental exposure experiments, all sensors are well bonded to structures and can effectively monitor fatigue cracks, which shows great durability. Therefore, FECA sensors can survive in harsh service environments of aircrafts, which provides important support for the engineering applications of FECA sensors.

scholarly journals Curie’s principle and causal graphs

2021 ◽  
Vol 87 ◽  
pp. 22-27
Author(s):  
David Kinney
Keyword(s):  
Causal Graphs

scholarly journals How Does Service Environment Enhance Consumer Loyalty in the Sport Fitness Industry? The Role of Servicescape, Cosumption Motivation, Emotional and Flow Experiences

2021 ◽  
Vol 13 (11) ◽  
pp. 6414
Author(s):  
Yun-kyung Jeon ◽  
Daeh-wan Kim ◽  
Seung-jin Han ◽  
Yi-han Huang ◽  
Jin-jae Kim
Keyword(s):  
Knowledge Acquisition ◽  
Consumer Satisfaction ◽  
Emotional Experience ◽  
Survey Study ◽  
Consumer Loyalty ◽  
Fitness Centers ◽  
Fitness Industry ◽  
Service Environments ◽  
Flow Experiences

The purpose of the current study was to investigate the structural relationship between the servicescape, the emotional experience, space flow, satisfaction, and consumer loyalty in the context of sport fitness centers. Furthermore, the present study aimed to examine the moderating role of knowledge acquisition motivation in the effect of the servicescape on the emotional experience and space flow. For these research purposes, a survey study targeting 400 consumers of sport fitness centers was conducted via online and offline survey platforms in South Korea. After deleting 16 incomplete cases, 384 cases were included in the final data analysis. The results of latent moderated equations modeling (LMS) showed that the servicescape directly enhances the emotional experience and space flow. Also, it indirectly affects consumer loyalty via the emotional experience, space flow, and consumer satisfaction. Meanwhile, knowledge acquisition motivation was found to moderate the effect of the servicescape on space flow. The present study has several theoretical implications. First, the current study illuminates the process mechanism of the effect of the servicescape in sport fitness centers on consumer loyalty. Second, the present study empirically shows different patterns of consumer experiences and decision-making depending on consumption motivation. Based on the results, sport fitness center managers should not only pay more attention to the convenience of their servicescape but they should also design service environments maximizing consumers′ emotional experiences. Additionally, the results imply that assigning exercise beginners to an attractive physical environment is an effective strategy, because they are more likely to evaluate their experiences based on the perceived servicescape.

scholarly journals Isothermal Oxidation Performance of Laser Cladding Assisted with Preheat (LCAP) Tribaloy T-800 Composite Coatings Deposited on EN8

Coatings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 843
Author(s):  
Sipiwe Trinity Nyadongo ◽  
Sisa Lesley Pityana ◽  
Eyitayo Olatunde Olakanmi
Keyword(s):  
Iron Oxide ◽  
Composite Coating ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Parabolic Rate Constant ◽  
Mass Gain ◽  
Isothermal Oxidation ◽  
Operational Parameters ◽  
Temperature Oxidation ◽  
Service Environments

It is anticipated that laser cladding assisted with preheat (LCAP)-deposited Tribaloy (T-800) composite coatings enhances resistance to structural degradation upon exposure to elevated-temperature oxidation service environments. The oxidation kinetics of LCAP T-800 composite coatings deposited on EN8 substrate and its mechanisms have not been explored in severe conditions that are similar to operational parameters. The isothermal oxidation behaviour of the T-800 composite coating deposited on EN8 via LCAP was studied at 800 °C in air for up to 120 h (5 × 24 h cycles) and contrasted to that of uncoated samples. The mass gain per unit area of the coating was eight times less than that of the uncoated EN8 substrate. The parabolic rate constant (Kp) for EN8 was 6.72 × 10−12 g2·cm−4·s−1, whilst that for the T-800 composite coating was 8.1 × 10−13 g2·cm−4·s−1. This was attributed to a stable chromium oxide (Cr2O3) layer that formed on the coating surface, thereby preventing further oxidation, whilst the iron oxide film that formed on the EN8 substrate allowed the permeation of the oxygen ions into the oxide. The iron oxide (Fe2O3) film that developed on EN8 spalled, as evidenced by the cracking of oxide when the oxidation time was greater than 72 h, whilst the Cr2O3 film maintained its integrity up to 120 h. A parabolic law was observed by the T-800 composite coating, whilst a paralinear law was reported for EN8 at 800 °C up to 120 h. This coating can be used in turbine parts where temperatures are <800 °C.

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