13 results on '"Ke, Qi-qi"'
Search Results
2. Study on the Effect of Micro-Force Perturbations and Temperature Fluctuation on Interferometer for the Taiji Program
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Juan Wang, He-Shan Liu, Chao Yang, Ke-Qi Qi, Zi-Ren Luo, and Ran Yang
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micro-force perturbation suppression ,temperature fluctuation suppression ,interferometry ,Taiji program ,Chemical technology ,TP1-1185 - Abstract
To increase the interferometric measurement resolution in the Taiji program, we present a noise suppression method in this paper. Taking the specific micro-force perturbation and temperature fluctuation in the Taiji-1 interferometer as an example, we set up and experimentally verified the corresponding transfer function to quantify the effect of both noise sources on the interferometric results. Consistent results were obtained between the numerical and experimental results for the transfer function. It is instructive to eliminate the micro-force perturbations and temperature fluctuations during on-orbit interferometric measurement for as long as the acquisition of the force or temperature distribution of related surfaces and the corresponding transfer functions. This indicates that the method can be used for noise sensing and more in the field of noise elimination and measurement resolution improvement for future Taiji program interferometers.
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- 2023
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3. Psychosocial adjustment changes and related factors in young and middle-aged patients with first-episode acute myocardial infarction: a longitudinal study.
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Zhou, Xin-yi, Ke, Qi-qi, Qiu, Wei-yu, Li, Yao-xia, Wu, Qin-yang, Ye, Qiu-yun, and Yang, Qiao-hong
- Abstract
Aims This study aimed to explore the change trend and group heterogeneity of psychosocial adjustment level and to determine its influencing factors among young and middle-aged patients with first-episode acute myocardial infarction (AMI). Methods and results The Psychosocial Adjustment Scale of Illness was used to assess the psychosocial adjustment level of the patients at 1, 3, and 6 months after discharge, respectively. Data were analysed using Pearson correlation analysis, generalized estimating equations, and growth mixed models. A total of 233 patients were included, and their psychosocial adjustment scores at the three time points were 57.18 ± 15.50, 36.17 ± 15.02, and 24.22 ± 12.98, respectively. The trajectories of changes in patients' psychosocial adjustment levels were divided into three latent categories: moderate adjustment improvement group (72.5%), low adjustment improvement group (16.3%), and persistent maladjustment group (11.2%). Among them, predictors of the persistent maladjustment group included no spouse, low monthly family income per capita, normal body mass index, never smoking, never exercising, combined with hyperlipidaemia, low social support, submission coping, and high perceived stress. Conclusion The psychosocial adjustment level of young and middle-aged patients with first-episode AMI showed an upward trend within 6 months after discharge, and there was group heterogeneity in the change trajectory of psychosocial adjustment level. It is suggested that a multicentre, large-sample longitudinal study should be carried out in the future, and the time of follow-up investigation should be extended to further clarify the change trajectory and influencing factors of psychosocial adjustment of patients with different subtypes, to provide the theoretical basis for formulating targeted intervention programmes. [ABSTRACT FROM AUTHOR]
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- 2024
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4. Psychosocial adaptation profiles in young and middle-aged patients with acute myocardial infarction: a latent profile analysis.
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Xiong, Jia-ming, Su, Jin, Ke, Qi-qi, Li, Yao-xia, Gong, Ni, and Yang, Qiao-hong
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MYOCARDIAL infarction ,CROSS-sectional method ,SELF-evaluation ,ACUTE diseases ,RESEARCH funding ,STATISTICAL sampling ,PSYCHOLOGICAL adaptation ,DESCRIPTIVE statistics ,LATENT structure analysis ,DISEASES ,PSYCHOLOGICAL stress ,MARITAL status ,SOCIAL support ,DATA analysis software ,PSYCHOLOGICAL adjustment testing - Abstract
Aims We sought to explore the latent classifications of psychosocial adaptation in young and middle-aged patients with acute myocardial infarction (AMI) and analyse the characteristics of different profiles of AMI patients. Methods and results A cross-sectional study was performed in 438 Chinese young and middle-aged patients with AMI. The investigation time was 1 month after discharge. Three different self-report instruments were distributed to the participants, including the Psychosocial Adjustment to Illness Scale, the Perceived Stress Scale, and the Social Support Rating Scale. The seven dimensions of the Psychosocial Adjustment to Illness Scale were then used to perform a latent profile analysis. All participants signed informed consent forms in accordance with the ethical principles of the Declaration of Helsinki. Finally, a total of 411 young and middle-aged AMI patients were enrolled. Three distinct profiles were identified, including the 'well-adapted group' (44.8%), 'highlight in psychological burdens group' (25.5%), and 'poorly adapted group' (29.7%). The influencing factors included stress perception, social support, occupational type, and marital status (P < 0.05). Conclusion The psychosocial adaptation of young and middle-aged AMI patients can be divided into three profiles. Clinical nurses can carry out individualized psychological interventions according to the characteristics of patients in different potential profiles to improve the psychosocial adaptation of patients and the prognosis of their disease. [ABSTRACT FROM AUTHOR]
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- 2024
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5. Experiences and perceptions of acute myocardial infarction patients with a prolonged decision‐making phase of treatment seeking: A meta‐synthesis.
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Su, Jin, Xiong, Jia‐ming, Ke, Qi‐qi, Yu, Hong‐yu, Zhao, Zhuo‐rui, and Yang, Qiao‐hong
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THERAPEUTICS ,META-synthesis ,ONLINE information services ,MEDICAL databases ,MEDICAL information storage & retrieval systems ,PATIENT decision making ,ATTITUDE (Psychology) ,TIME ,PSYCHOLOGY of cardiac patients ,SYSTEMATIC reviews ,CHANGE ,MYOCARDIAL infarction ,PATIENTS' attitudes ,DESCRIPTIVE statistics ,MEDLINE ,THEMATIC analysis ,ACUTE diseases ,COVID-19 pandemic - Abstract
Aims: To describe the experiences and perceptions of acute myocardial infarction (AMI) patients with a prolonged decision‐making phase of treatment‐seeking. Background: Previous attempts to reduce the treatment‐seeking time of AMI have been less than optimal. Due to the coronavirus disease 2019 (COVID‐19) pandemic, the situation of prehospital delay is possibly worse. Decisions to seek treatment are influenced by multiple factors and need individualised interventions. Understanding patients' external and internal experiences and psychological perceptions is essential. Design: Meta‐synthesis. Data sources: We searched PubMed, Embase, Cochrane Library, Web of Science, Scopus and four Chinese databases from inception to April 2022. Methods: We screened the retrieved articles with predetermined inclusion and exclusion criteria, and reviewed articles using Thomas and Harden's (BMC Medical Research Methodology, 2008 8, 45) qualitative thematic synthesis approach. The Joanna Briggs Institute critical appraisal tool for qualitative research was used to assess the quality of studies. Results: Twenty‐one studies were included, identifying four themes and nine sub‐themes. The four primary themes were difficulty recognising and attributing symptoms, attempt to act, unwillingness to change and self‐sacrifice. Conclusion: Deciding to seek treatment is a complex social and psychological process, which needs comprehensive interventions considering personal and sociocultural factors and factors related to the COVID‐19 pandemic. Implications for the profession and/or patient care: Details of interventions for decisions to seek treatment in AMI patients need to be further designed and evaluated. Impact: Results would help healthcare professionals to implement individualised management of decision‐making of treatment‐seeking among AMI patients, and improve medical records of patients' prehospital experiences. Reporting Method: The Preferred Reporting Items for Systematic Reviews 2020 checklist was used to report the findings. Patient or Public Contribution: Two AMI patients contributed to the data synthesis by giving simple feedback about the final themes. [ABSTRACT FROM AUTHOR]
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- 2023
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6. Self-esteem and family functioning mediates the association of symptom severity and parental affiliate stigma among families with children with ASD
- Author
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Lyu, Qi-yuan, primary, Yu, Xiao-xue, additional, Wang, Jia-le, additional, Wang, Xin-yu, additional, Ke, Qi-qi, additional, Liu, Dan, additional, and Yang, Qiao-hong, additional
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- 2022
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7. Mobilizing artificial intelligence to cardiac telerehabilitation
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Su, Jin, primary, Zhang, Ye, primary, Ke, Qi-qi, primary, Su, Ju-kun, primary, and Yang, Qiao-hong, primary
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- 2022
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8. A general method of designing phase-shifting algorithms for grating lateral shearing interferometry
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Ke-qi Qi, Yang Xiang, and Chao Fang
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Shearing (physics) ,Accuracy and precision ,General method ,Computer Networks and Communications ,Computer science ,02 engineering and technology ,Grating ,021001 nanoscience & nanotechnology ,01 natural sciences ,010309 optics ,Interferometry ,Hardware and Architecture ,0103 physical sciences ,Signal Processing ,Electrical and Electronic Engineering ,0210 nano-technology ,Shearing interferometer ,General expression ,Algorithm - Abstract
We propose a general method of designing phase-shifting algorithms for grating lateral shearing interferometry. The algorithms compensate for the zeroth-order effect error and phase-shifting error in varying degrees. We derive a general expression of the phase-shifting algorithm in grating lateral shearing interferometer and introduce the corresponding design method. Based on the expression and method, four phase-shifting algorithms are designed with different phase-shifting errors to obtain high measurement accuracy. A new 13-frame phase-shifting algorithm is designed and simulated with a large zeroth-order effect. Simulation results verify the general expression and the corresponding design method.
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- 2018
9. A novel 2-DOF compound compliant parallel guiding mechanism
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Yang Xiang, Ya-lin Ding, Yang Zhang, Ke-qi Qi, and Chao Fang
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Flexure hinges ,0209 industrial biotechnology ,Engineering ,business.industry ,Mechanical Engineering ,Linearity ,Bioengineering ,02 engineering and technology ,Structural engineering ,021001 nanoscience & nanotechnology ,Finite element method ,Computer Science Applications ,Motion range ,Mechanism (engineering) ,020901 industrial engineering & automation ,Machining ,Mechanics of Materials ,0210 nano-technology ,business - Abstract
Based on the analysis of existing guiding mechanisms, a novel 2-DOF compound compliant parallel guiding mechanism (2-DCCPGM) is proposed in this paper, which has compact structure, long motion range and negligible parasitic displacements. The relationship between the guiding displacements and the driving forces have been obtained from the pseudo-rigid-body (PRB) model of 2-DCCPGM. And the dynamic analysis is taken as well. Some design criteria are put forward, based on the analytical results. To analysis the guiding capability and the dynamic performance of 2-DCCPGM, finite element analysis (FEA) has been carried out. And the results of the static FEA simulations confirmed that the 2-DCCPGM barely generates parasitic displacements. A prototype has been manufactured, and experiments have been conducted to validate the performance of the 2-DCCPGM. And from the experimental results, the 2-DCCPGM has been proved to have satisfactory guiding performance. Moreover, the experiment results have also revealed that the machining deviation of the flexure hinges of 2-DCCPGM could cause parasitic displacements and reduce the guiding linearity of the 2-DCCPGM.
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- 2017
10. Analysis of the displacement amplification ratio of bridge-type mechanism
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Chang-song Yu, Ke-qi Qi, Yang Zhang, Chao Fang, and Yang Xiang
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Deformation (mechanics) ,Mechanical Engineering ,Mathematical analysis ,Hinge ,Bioengineering ,Geometry ,Kinematics ,Amplification factor ,Displacement (vector) ,Finite element method ,Computer Science Applications ,Mechanism (engineering) ,Nonlinear system ,Mechanics of Materials ,Mathematics - Abstract
In order to further understand the characteristics of displacement amplification of bridge-type mechanism, specific analysis is presented in this paper. The average ideal displacement amplification ratio during the deformation process is obtained based on the kinematics theories. Elastic beam theory is adopted to analyze the deformation of the hinges, and a novel formula of theoretical displacement amplification ratio is carried out. A conclusion is reached that the displacement amplification ratio is not related to the material and thickness of structure. Moreover, this conclusion is verified by finite element method. The relationship between displacement amplification ratio and the structural dimensions is analyzed in depth. After the comparisons with existing methods, the formula obtained by elastic beam theory in this paper is proved to be more reliable. And this conclusion is confirmed by the comparison with previous experiment. Furthermore, the influence of geometric nonlinearity of bridge-type mechanism is also well analyzed.
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- 2015
11. Two-step algorithm for removing the rotationally asymmetric systemic errors on grating lateral shearing interferometer
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Lu Zhang, Ke-qi Qi, and Yang Xiang
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Shearing (physics) ,Physics ,Wavefront aberration ,Rotation method ,business.industry ,Astrophysics::Instrumentation and Methods for Astrophysics ,02 engineering and technology ,Grating ,021001 nanoscience & nanotechnology ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,010309 optics ,Interferometry ,Optics ,0103 physical sciences ,0210 nano-technology ,business ,Shearing interferometer ,Two step algorithm - Abstract
The grating lateral shearing interferometer may achieve ultra-high accuracy absolute testing after eliminating the systemic errors from the interferometer itself and the orthogonality problem between two shearing directions. Aiming at the interferometer, we proposed a two-step algorithm for removing the rotationally asymmetric systemic errors from our shearing setup. This rotation method provides a new approach for acquiring the wavefront aberration by choosing the rotation angles with the minimum decentration and to satisfy the immune of systemic errors at the same time. Simulation and experiment verified that it is more propitious to eliminate the systemic errors when it is applied to our shearing setup.
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- 2018
12. An 11-frame phase shifting algorithm in lateral shearing interferometry
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Chang-song Yu, Chunlei Zhang, Chao Fang, Ke-qi Qi, and Yang Xiang
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Shearing (physics) ,Error function ,Interferometry ,Optics ,Spatial filter ,Adaptive-additive algorithm ,business.industry ,Phase (waves) ,Sine ,business ,Interference (wave propagation) ,Atomic and Molecular Physics, and Optics ,Mathematics - Abstract
In order to eliminate zeroth order effect and to make the phase shifting algorithm insensitive to phase shifting error, an 11-frame phase shifting algorithm is proposed in this paper. The analytical expression of phase-restoration error function is derived. The principle of phase shifting error compensation and the capability of suppressing zeroth order effect are explained, in comparison of existing algorithm. The analytical results show that this algorithm's phase-restoration error is proportional to sine of double shearing phase and to biquadratic of phase shifting error. Finally, we generate the interference patterns of 11-frame algorithm and existing algorithm, restore the shearing phases and calculate the phase-restoration errors by simulations. The simulation results verify the theoretical analyses.
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- 2014
13. The Life Experience of Patients after the Implantation of Cardiovascular Implantable Electronic Devices: A Qualitative Meta-Synthesis.
- Author
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Zhou XY, Ke QQ, Su JK, Hu K, and Yang QH
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Background: Cardiovascular implantable electronic devices (CIED) are more and more widely used in the clinical treatment of cardiovascular diseases. However, CIED implantation may also result in a variety of physical, psychological, and social problems among patients. To help patients adapt to life after CIED implantation, it is important to know patients' needs from their perspectives. Explore the needs of CIED patients from their perspectives to guide healthcare providers to improve their quality of life., Methods: PubMed, Web of Science, Embase, the Cochrane Library, CNKI, the VIP database, the Wanfang database, and the China Biomedical Literature database were searched for qualitative studies on the experience of patients with CIED dating from January 2000 to August 2022. The quality of each article was evaluated according to the 2016 edition of the Joanna Briggs Institute Evidence-Based Health Care Center Qualitative Research Quality Evaluation Criteria and an integrative meta-synthesis was undertaken., Results: A total of 18 documents were included, and 111 categories were extracted. Analysis of the data resulted in the identification of 3 themes and 12 subthemes. The first theme, Equipment Symbiosis, included "Mixed feelings about the device as part of the body", "Mixed feelings about the patient's role", and "Mixed feelings about an electrical stimulus". The second theme, External Support, included "Husband and wife relationship damaged", "Eager to participate, unwilling to be overprotected", "Want to return to work but are forced to leave", and "Information supply and demand mismatch". The third theme, Self-coping, included "How to face a doctor", "How to deal with activity restrictions", "How to face yourself", "How to face the future", and "How to face death"., Conclusions: Healthcare providers need to accelerate technological innovation and clinical adoption of CIED. Additionally, healthcare providers need to establish a diverse support system led by medical staff, with family members, peers, and society working together, and improve CIEDs remote monitoring to help patients improve their quality of life., Competing Interests: The authors declare no conflict of interest., (Copyright: © 2023 The Author(s). Published by IMR Press.)
- Published
- 2023
- Full Text
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