Abstract The liquid floated gyro (LFG) is an inertial instrument widely used in aviation, aerospace, navigation and other high-tech fields, with the advantages of high accuracy good in-orbit reliability. filling internal floating oil a key process manufacture LFG, however, due to limitation technology level, environmental conditions factors, may be mixed certain amount air, which affects rheological characteristics oil, thus leading drift instrument. Therefore, this paper analyzes effect air...

Under the human-automation codriving future, dynamic trust should be considered. This paper explored how changes over time and multiple factors (time, propensity, neuroticism, takeover warning design) calibrate together. We launched two driving simulator experiments to measure drivers' before, during, after experiment under scenarios. The results showed that in automation increased during short-term interactions dropped four months, which is still higher than pre-experiment trust. Initial...

Objective Drivers usually appear to self-regulate their driving behaviors in situations considered be challenging, such as mobile phone-distracted driving. It is important clarify how drivers actual behaviors. In addition, few studies investigated driver distraction active and responsive scenarios. Therefore, the present study aimed gain a better understanding of drivers’ self-regulation phone use while The contribution compensatory beliefs was also explored.Methods This conducted using 2...

Abstract In order to analyze the dynamic behavior of oil film in herringbone gear meshing area under injection lubrication conditions more accurately, this paper proposed a thermal elastohydrodynamic (TEHL) analysis method, by combining traditional TEHL calculation method with two-phase flow theory. First, ansys/cfx 18.1 was used determine air content lubricating zone condition. Then, considering influence on rheological properties oil, model improved. On basis, angle α1 fraction and...

Abstract Objectives COVID-19 disease has progressed to the level of a global pandemic. This study aimed investigate people’s psychological and behavioural responses epidemic explore predictors for social distancing panic buying. Methods A 17-item questionnaire was developed distributed randomly people using media. Descriptive statistics one-way ANOVA were used assess responses. Hierarchical regression conducted predictive effects variables on reports buying, respectively. Results Respondents...

Satisfaction with community public services reflects the quality of in communities, which is important for residentsâ–™ well-being. We collected data China through a survey, and regression analyses were used to test our hypotheses. Results from 1,112 residents show that satisfaction positively related subjective well-being, social support h as mediating effect on relationship between With Findings this study provide culture-specific geographical perspective highlight importance wellbeing studies.

Aiming at the issue of how to improve system transmission rate in large-scale device communication, we propose a resource allocation algorithm for UAV-assisted backscatter communication (BC) based on Non-orthogonal Multiple Access (NOMA), which divides multiple devices (BDs) into different clusters. Within each cluster, NOMA is adopted. The optimization problem maximize sum established under practical constraints energy causality and rate. Since non-convex, original divided UAV trajectory...

To improve the braking performance and energy feedback rate of extended-range electric vehicles, a driving intention recognition model is established based on Markov theory with brake pedal displacement, displacement change rate, force as parameters, validity verified by actual vehicle test data. Based model, compound control strategy for vehicles constraints distribution motor battery characteristics. Cruise MATLAB are used joint simulation. The simulation results show that system can work...

To overcome such Hybrid Electric Vehicle (HEV) engine problems as high fuel consumption and poor economical efficiency when working in low-efficiency areas, this paper intends to establish the ISG light hybrid vehicle structure-based mathematical models of engines, electric motors, batteries whole power output first; analyse relationship between load rate optimal characteristics, then take into consideration performance characteristics motor battery efficiency, so come up with switching...

Conversational agents (CAs) have recently become ubiquitous. Smart speakers, mobile phone voice assistants, and in-car assistants entered our lives. Studies examined some factors influencing the user experience (UX) of CAs. However, there is little research on CAs' reply design, especially when information users need uncertain, which regarded as an uncertain scenario. The current mainly focuses measuring UX with replies in scenarios. We designed two strategies CAs, namely, a further inquiry...

Objective To evaluate the quality of life(QOL)of postpartum women within six months after delivery in Pudong New Area Shanghai.Methods From January 1st to June 30th 2011,435 women,discharged from Children and Women's Health Care Hospital Area,Gaoqiao Community Service Center Lujiazui Area,were investigated by SF 36 questionaire including eight items [physical functioning (PF),role limitations due physical problems (RP),bodily pain (BP),general health (GH),vitality (VT),social (SF),role...

Abstract The hemispherical dynamic pressure motor (HDPM) has the advantages of high speed, wear resistance and stability, which is widely used in inertial instruments to produce gyroscopic effect. ultra-thin gas film between stator rotor provides lubrication bearing capacity, whose characteristics determine performance. However, influence mechanism some key factors such as ball center distance on not clear, become bottleneck restricting performance improvement HDPMs. Therefore, this paper, a...

Abstract The vacuum cavity was used to suppress gas explosion, and the explosion flame temperature pressure in pipeline were studied at different attachment positions of cavity. results showed that not only promoted but also inhibited flame. effect suppression better 1.3m from inlet; influence length-width ratios on analyzed under optimal distance found when aspect ratio 3.