415 research outputs found
sj-docx-1-npx-10.1177_1934578X221126042 - Supplemental material for Synthesis, Antioxidant, and Antihypoxia Activities of 6,7,8,4′-Tetrahydroxyisoflavone and 6,7,8,3′,4′-Pentahydroxyisoflavone
No full textSupplemental material, sj-docx-1-npx-10.1177_1934578X221126042 for Synthesis, Antioxidant, and Antihypoxia Activities of 6,7,8,4′-Tetrahydroxyisoflavone and 6,7,8,3′,4′-Pentahydroxyisoflavone by Hongqiang Tan, Jin Shao, Jie Zhang, Huiping Ma and Linlin Jing in Natural Product Communications</p
Fault detection and fault-tolerant control for nonlinear systems
No full textLinlin Li addresses the analysis and design issues of observer-based FD and FTC for nonlinear systems. The author analyses the existence conditions for the nonlinear observer-based FD systems to gain a deeper insight into the construction of FD systems. Aided by the T-S fuzzy technique, she recommends different design schemes, among them the L_inf/L_2 type of FD systems. The derived FD and FTC approaches are verified by two benchmark processes. Contents Overview of FD and FTC Technology Configuration of Nonlinear Observer-Based FD Systems Design of L2 nonlinear Observer-Based FD Systems Design of Weighted Fuzzy Observer-Based FD Systems FTC Configurations for Nonlinear Systems< Application to Benchmark Processes Target Groups Researchers and students in the field of engineering with a focus on fault diagnosis and fault-tolerant control fields The Author Dr. Linlin Li completed her dissertation under the supervision of Prof. Steven X. Ding at the Faculty of Engineering, University of Duisburg-Essen, Germany
Horticultural therapy for general health in the older adults: a systematic review and meta-analysis
No full textBackground With a pronounced and historically unprecedented tendency of population ageing, research on ageing and related disorders has been increasingly brought into focus. Horticultural therapy (HT), as an important role of social prescribing, has been an integrative for decades. This systematic review and meta-analysis aimed to evaluate HT for general health in older adults. Methods Electronic databases including PubMed, Web of Science, ScienceDirect, the Cochrane Library, MEDLINE (Ovid), EMBASE (Ovid), CINAHL (EBSCO), China National Knowledge Infrastructure (CNKI), and the Wanfang database, grey literature databases and clinical trials registers were searched from inception to March 2021. Randomized controlled trials (RCTs), quasi-RCTs (QRCTs) and the cohort studies about HT for adults aged over 60 were included in this study. Outcome measures were physical function, quality of life, BMI, mood tested by self-reported questionnaire and the expression of the immune cells. The study was registered under PROSPERO (CRD42019146184). Results Totally, fifteen studies (thirteen RCTs and two cohort studies) involving 1046 older participants were included. Meta-analysis showed that HT resulted in better quality of life (MD 2.09, 95% CI [1.33, 2.85], P<0. 01) and physical function (SMD 0.82, 95% [0.36, 1.29], P<0.01) compared with no-gardener; the similar findings showed in BMI (SMD -0.30, 95% [-0.57, -0.04], P = 0.02) and mood tested by self-reported questionnaire (SMD 2.80, 95% CI [1.82, 3.79], P<0. 01). And HT might be conducive on blood pressure and immunity, while all the evidence were moderate-quality judged by GRADE. Conclusions HT may improve physical function and quality of life in older adults, reduce BMI and enhance positive mood. A suitable duration of HT may be between 60 to 120 minutes per week lasting 1.5 to 12 months. However, it remains unclear as to what constitutes an optimal recommendation.</p
Images of our Writing: Posters of our watchers and learning in the time of COVID-19
No full textFor this poster assignment, students were asked to read Gail Godwin’s piece “The Watcher at the Gates” and imagine not only what their watcher might look like but also the ways in which their watcher affects their academic work. Posters A and B, by Linlin Tan and Yu Hu, show how students imagine their Watchers – the critical voice inside their heads – who often interfere with their writing or their creation process.
Posters C and D, by Haoyuan Li and Xingyi Wang, express students’ attitudes towards learning during the time of Covid-19. When the U of A made the decision to move the remainder of the Winter term 2020 to remote delivery, both instructors and students had very little time to adjust. This, in turn, created an opportunity for students to show in a one-page poster how they feel about learning online. Each poster expresses a different reaction to remote delivery
Supplemental Material - Development and Validation of Knowledge Assessment Scales for Dementia and Urinary Incontinence in Community Older People
No full textSupplemental Material for Development and Validation of Knowledge Assessment Scales for Dementia and Urinary Incontinence in Community Older People by Hui Sun, Wenqi Liu, Xuemei Sun, Yinyan Gao, Yancong Chen, Yali Lin, Jinlu Song, Zixuan Zhang, Betty H Wang, Lingqi Li, Hui Feng, Hongzhuan Tan, Qiong Chen, Linlin Peng, Wenjie Dai, and Irene XY Wu in Journal of Applied Gerontology</p
A safety investment optimization model for power grid enterprises based on System Dynamics and Bayesian network theory
No full textIn recent years, frequent large-scale power grid accidents have caused serious economic losses and bad social impact, which has drawn great attention from power grid enterprises. As one of the key elements of production, safety investment plays an important role in improving the safety level and reducing accident loss. In this paper, System dynamics (SD) and Bayesian network (BN) are integrated to develop a novel safety investment optimization model for power grid enterprises, which takes into account the impact of safety investment factors on accidents and the interactions between them. Based on sensitivity analysis, critical safety investment factors are determined to form the subsystem of the SD model. Subsequently, the optimal safety investment strategy is determined by a three-step simulation. The simulation results show that there are barrel effects and a diminishing marginal utility in safety investment. The proposed safety investment optimization model is practical to provide technical supports and guidance for determining an effective safety investment strategy in power grid enterprises.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Safety and Security Scienc
Research and simulation on speech recognition by Matlab
No full textWith the development of multimedia technology, speech recognition technology has increasingly become a hotspot of research in recent years. It has a wide range of applications, which deals with recognizing the identity of the speakers that can be classified into speech identification and speech verification according to decision modes.The main work of this thesis is to study and research the techniques, algorithms of speech recognition, thus to create a feasible system to simulate the speech recognition. The research work and achievements are as following: First: The author has done a lot of investigation in the field of speech recognition with the adequate research and study. There are many algorithms about speech recognition, to sum up, the algorithms can divided into two categories, one of them is the direct speech recognition, which means the method can recognize the words directly, and another prefer the second method that recognition based on the training model. Second: find a useable and reasonable algorithm and make research about this algorithm. Besides, the author has studied algorithms, which are used to extract the word's characteristic parameters based on MFCC(Mel frequency Cepstrum Coefficients) , and training the Characteristic parameters based on the GMM(Gaussian mixture mode) . Third: The author has used the MATLAB software and written a program to implement the speech recognition algorithm and also used the speech process toolbox in this program. Generally speaking, whole system includes the module of the signal process, MFCC characteristic parameter and GMM training. Forth: Simulation and analysis the results. The MATLAB system will read the wav file, play it first, and then calculate the characteristic parameters automatically. All content of the speech signal have been distinguished in the last step. In this paper, the author has recorded speech from different people to test the systems and the simulation results shown that when the testing environment is quiet enough and the speaker is the same person to record for 20 times, the performance of the algorithm is approach to 100% for pair of words in different and same syllable. But the result will be influenced when the testing signal is surrounded with certain noise level. The simulation system won’t work with a good output, when the speaker is not the same one for recording both reference and testing signal
Influence of third body evolution on tribological property of copper-matrix friction material by surface treatment
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