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Ridge-furrow plastic mulching with a suitable planting density enhances rainwater productivity,grain yield and economic benefit of rainfed maize

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Journal of Arid Land 2020年第2期12卷 181-198页

作者： ZHENG Jing FAN Junliang ZOU Yufeng Henry wai chau ZHANG Fucang Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F UniversityYangling 712100China Institute of Water-saving Agriculture in Arid Areas of China Northwest A&F UniversityYangling 712100China Department of Soil and Physical Sciences Faculty of Agriculture and Life ScienceLincoln UniversityCanterbury 7647New Zealand

Soil surface mulching and planting density regulation are widely used for effective utilization of limited rainwater resources and improvement of crop productivity in dryland ***,the combined effects of mulching type and planting density on maize growth and yield have been seldom studied,especially in different hydrological years.A field experiment was conducted to evaluate the effects of mulching type and planting density on the soil temperature,growth,grain yield(GY),water use efficiency(WUE)and economic benefit of rainfed maize in the drylands of northern China during *** fluctuated over the three *** were four mulching types(NM,flat cultivation with non-mulching;SM,flat cultivation with straw mulching;RP,plastic-mulched ridge plus bare furrow;RPFS,plastic-mulched ridge plus straw-mulched furrow)and three planting densities(LD,low planting density,45.0×10^3 plants/hm^2;MD,medium planting density,67.5×10^3 plants/hm^2;HD,high planting density,90.0×10^3 plants/hm^2).Results showed that soil temperature was higher with RP and lower with SM compared with NM,but no significant difference was found between RPFS and *** soil water was retained by soil mulching at the early growth stage,but it significantly varied at the middle and late growth *** growth was significantly improved by soil *** increasing planting density,stem diameter,net photosynthetic rate and chlorophyll content tended to decline,whereas a single-peak trend in biomass yield was *** type and planting density did not have significant effect on evapotranspiration(ET),but GY and WUE were significantly *** were significant interacting effects of mulching type and planting density on biomass yield,GY,ET and *** with NM,RPFS,RP and SM increased GY by 57.5%,50.8%and 18.9%,and increased WUE by 66.6%,54.3%and 18.1%,*** MD,GY increased by 41.4%and 25.2%,and WUE increased by 38.6%and 22.4%compared with thos

关键词： dryland farming evapotranspiration net income soil temperature soil water storage

Virtual reality based multiple life skill training for intellectual disability:A multicenter randomized controlled trial

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Engineered Regeneration 2022年第2期3卷 121-130页

作者： James Chung-wai Cheung ming Ni Andy Yiu-chau Tam Tim Tin-Chun Chan Alyssa Ka-Yan Cheung Ocean Yu-Hong Tsang Chi-Bun Yip Wing-Kai Lam Duo wai-Chi Wong Department of Biomedical Engineering Faculty of EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China Research Institute for Smart Ageing The Hong Kong Polytechnic UniversityHong Kong 999077China Jockey Club Smart Ageing Hub Department of Biomedical EngineeringFaculty of EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China Department of Orthopaedics Pudong New Area People’s Hospital Affiliated to Shanghai Jiaotong UniversityShanghai 201299China Social Service Department Yan Chai HospitalHong Kong 999077China C2 Innovations and Research Limited Hong Kong 999077China Department of Kinesiology Shenyang Sport UniversityShenyang 110102China Sports Information and External Affairs Centre Hong Kong Sports InstituteHong Kong 999077China

Life skill-based training is essential for intellectual disabled individuals to regain autonomy and social *** reality(VR)could deliver a nascent application that is more engaging and *** objective of this study was to evaluate the training effects of the VR-based multiple life skill training program on life skill perfor-mance,self-efficacy,memory,cognitive and behavioral functions via a multicenter randomized controlled trial.A total of 145 intellectual disabled participants were recruited for a randomized controlled trial with three in-tervention arms:VR(n=42);traditional(n=53);and control(n=50).The life skill tasks for the interventions included 1)grocery shopping,2)cooking,and 3)kitchen *** measures were performance scores for the three tasks,self-efficacy scale,digit span score,and Frontal Assessment Battery score,graded by blinded ***-after effects of each group were evaluated using separated Wilcoxon Signed-rank *** sig-nificantly improved cooking,cleaning performance,and memory span,while traditional training significantly improved shopping,cooking,and cleaning *** generalized estimating equation evaluated effects between groups adjusted for age,gender and intelligence quotient(IQ).VR had significantly larger improvement effects in cooking and cleaning than the control group and memory span compared to traditional training and controls *** appeared to be a significant confounder on the training *** work may consider developing artificial intelligence to customize programs depending on IQ level.

关键词： Mental retardation Intellectual development X-reality Immersive rehabilitation Metaverse

Exploratory use of ultrasound to determine whether demyelination following carpal tunnel syndrome co-exists with axonal degeneration

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Neural Regeneration Research 2018年第2期13卷 317-323页

作者： Xue Deng Lai-Heung Phoebe chau Suk-Yee Chiu Kwok-Pui Leung Sheung-wai Li Wing-Yuk Ip Department of Orthopedics & Traumatology The University of Hong Kong Clinical Electro-diagnostic Unit Tung Wah Hospital Department of Medicine The University of Hong Kong

Carpal tunnel syndrome （CTS） accompanied by secondary axonal degeneration cannot be clearly dis- criminated using the current cross-validated ultrasound severity classification system. This study aimed at exploring cut-off values of ultrasound parameters, including wrist cross-sectional area （W-CSA）, wrist perimeter （W-P）, ratio of cross-sectional area （R-CSA） and perimeter （R-P）, changes of CSA and P from wrist to one third distal forearm （△CSA＆AP） for differentiation. Seventy-three patients （13 male and 60 female） were assigned into group A （demyelination only, n = 40） and group B （demyelination with secondary axonal degeneration, n = 33） based on the outcomes of nerve conduction studies （NCS）. Receiver Operative Characteristics （ROC） curves were plotted to obtain sensitivity, specificity, and accuracy of cut- off values for all the ultrasound parameters. The overall identified cut-off values （W-CSA 12.0 mm2, W-P 16.27 mm, R-CSA 1.85, R-P 1.48, △CSA 6.98 mm2, △P 5.77 mm） had good sensitivity （77.1-88.6%）, fair specificity （40-62.2%） and fair-to-good accuracy （0.676-0.758）. There were also significant differences in demographics （age and severity gradation, P 〈 0.001）, NCS findings （wrist motor latency and conduction velocity, P 〈 0.0001; wrist motor amplitude, P 〈 0.05; distal sensory latency, P 〈 0.05; sensory amplitude, P 〈 0.001） and ultrasound measurements （W-CSA, W-P, R-CSA, R-P, △CSA＆△P, P 〈 0.05） between groups. These findings suggest that ultrasound can be potentially used to differentiate demyelinating CTS with sec- ondary axonal degeneration and provide better treatment guidance.

关键词： carpal tunnel syndrome nerve conduction studies ultrasound receiver operating characteristic curve peripheral nerve compression injury ultrasonography neural conduction axonal degeneration neural regeneration

Investigation of the genetic etiology in male infertility with apparently balanced chromosomal structural rearrangements by genome sequencing

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Asian Journal of Andrology 2022年第3期24卷 248-254页

作者： Matthew Hoi Kin chau Ying Li Peng Dai Mengmeng Shi Xiaofan Zhu Jacqueline Pui Wah Chung Yvonne K Kwok Kwong wai Choy Xiangdong Kong Zirui Dong Department of Obstetrics and Gynaecology The Chinese University of Hong KongHong KongChina Shenzhen Research Institute The Chinese University of Hong KongShenzhen 518057China Hong Kong Hub of Paediatric Excellence The Chinese University of Hong KongHong KongChina Genetics and Prenatal Diagnosis Center The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China The Chinese University of Hong Kong-Baylor College of Medicine Joint Center for Medical Genetics Hong KongChina

Apparently balanced chromosomal structural rearrangements are known to cause male infertility and account for approximately 1%of azoospermia or severe ***,the underlying mechanisms of pathogenesis and etiologies are still largely ***,we investigated apparently balanced interchromosomal structural rearrangements in six cases with azoospermia/severe oligospermia to comprehensively identify and delineate cryptic structural rearrangements and the related copy number *** addition,high read-depth genome sequencing(GS)(30-fold)was performed to investigate point mutations causative of male ***-pair GS(4-fold)revealed additional structural rearrangements and/or copy number changes in 5 of 6 cases and detected a total of 48 ***,the breakpoints caused truncations of 30 RefSeq genes,five of which were associated with ***,the breakpoints disrupted 43 topological-associated *** disruptions or potential dysregulations of genes,which play potential roles in male germ cell development,apoptosis,and spermatogenesis,were found in all cases(n=6).In addition,high read-depth GS detected dual molecular findings in case MI6,involving a complex rearrangement and two point mutations in the gene ***,our study provided the molecular characteristics of apparently balanced interchromosomal structural rearrangements in patients with male *** demonstrated the complexity of chromosomal structural rearrangements,potential gene disruptions/dysregulation and single-gene mutations could be the contributing mechanisms underlie male infertility.

关键词： azoospermia balanced structural rearrangements genome sequencing male infertility severe oligospermia

Dual ultra-wideband(UWB)radar-based sleep posture recognition system:Towards ubiquitous sleep monitoring

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再生工程(英文) 2023年第1期4卷 36-43页

作者： Derek Ka-Hei Lai Li-Wen Zha Tommy Yau-Nam Leung Andy Yiu-chau Tam Bryan Pak-Hei So Hyo-Jung Lim Daphne Sze Ki Cheung Duo wai-Chi Wong James Chung-wai Cheung Department of Biomedical Engineering Faculty of EngineeringThe Hong Kong Polytechnic UniversityHong Kong 999077China Department of Bioengineering Imperial CollegeLondon SW72AZUnited Kingdom Research Institute of Smart Ageing The Hong Kong Polytechnic UniversityHong KongChina School of Nursing The Hong Kong Polytechnic UniversityHong KongChina

Sleep posture monitoring is an essential assessment for obstructive sleep apnea(OSA)*** objective of this study is to develop a machine learning-based sleep posture recognition system using a dual ultra-wideband radar *** collected radiofrequency data from two radars positioned over and at the side of the bed for 16 patients performing four sleep postures(supine,left and right lateral,and prone).We proposed and evaluated deep learning approaches that streamlined feature extraction and classification,and the traditional machine learning approaches that involved different combinations of feature extractors and *** results showed that the dual radar system performed better than either single *** statistical features with random forest classifier yielded the best accuracy(0.887),which could be further improved via an ablation study(0.938).Deep learning approach using transformer yielded accuracy of 0.713.

关键词： Obstructive sleep apnea Deep learning Sleep monitoring Feature extraction Ablation study

Gastric peritoneal carcinomatosis-a retrospective review

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World Journal of Gastrointestinal Oncology 2017年第3期9卷 121-128页

作者： Hwee Leong Tan Claramae Shulyn Chia Grace Hwei Ching Tan Su Pin Choo David wai-Meng Tai Clarinda Wei Ling Chua Matthew chau Hsien Ng Khee Chee Soo Melissa Ching Ching Teo Division of Surgical Oncology National Cancer Centre Singapore Dvision of Medical Oncology National Cancer Centre Singapore

AIM To characterize patients with gastric peritoneal carcinomatosis(PC) and their typical clinical and treatment course with palliative systemic chemotherapy as the current standard of *** We performed a retrospective electronic chart review of all patients with gastric adenocarcinoma with PC diagnosed at initial metastatic presentation between January 2010 and December 2014 in a single tertiary referral *** We studied a total of 271 patients with a median age of 63.8 years and median follow-up duration of 5.1 mo. The majority(n = 217, 80.1%) had the peritoneum as the only site of metastasis at initial presentation. Palliative systemic chemotherapy was eventually planned for 175(64.6%) of our patients at initial presentation, of which 171 were initiated on it. Choice of first-line regime was in accordance with the National Comprehensive Cancer Network Guidelines for Gastric Cancer Treatment. Thesepatients underwent a median of one line of chemotherapy, completing a median of six cycles in total. Chemotherapy disruption due to unplanned hospitalizations occurred in 114(66.7%), while cessation of chemotherapy occurred in 157(91.8%), with 42 cessations primarily attributable to PC-related complications. Patients who had initiation of systemic chemotherapy had a significantly better median overall survival than those who did not(10.9 mo vs 1.6 mo, P < 0.001). Of patients who had initiation of systemic chemotherapy, those who experienced any disruptions to chemotherapy due to unplanned hospitalizations had a significantly worse median overall survival compared to those who did not(8.7 mo vs 14.6 mo, P < 0.001).CONCLUSION Gastric PC carries a grim prognosis with a clinical course fraught with disease-related complications which may attenuate any survival benefit which palliative systemic chemotherapy may have to offer. As such, investigational use of regional therapies is warranted and required validation in patients with isolated PC to maximize their

关键词： Peritoneal carcinomatosis Gastric cancer

中小企业销售业务内部控制优化研究——S教育培训机构为例

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中小企业销售业务内部控制优化研究——S教育培训机构为例

作者：鄒惠波（chau wai PO）中央财经大学

学位级别：硕士

当前,整体市场和商务的大环境都处于持续变化的阶段,对于企业而言,只有加强内部管理方可实现健康稳定的发展。然而,我国企业的现状是,内部管理整体来看较为薄弱,其中部分企业的内部控制还处于探索阶段。从制度方面来看,内部控制度缺少... 详细信息

当前,整体市场和商务的大环境都处于持续变化的阶段,对于企业而言,只有加强内部管理方可实现健康稳定的发展。然而,我国企业的现状是,内部管理整体来看较为薄弱,其中部分企业的内部控制还处于探索阶段。从制度方面来看,内部控制度缺少必要的流程图和配套表格,大部分为简单的文字描述,这种背景下,员工无法在短时间内对企业内部控制制度做出相对准确的了解。对于企业而言,完善的销售业务内部控制制度不仅有助于企业经营效益和利润能力的提升,还有助于销售风险的降低,意义非凡。就现代企业而言,内部控制不仅可以预防财务舞弊,又有助于经营管理的完善,除此之外,还能够为企业发展遮风挡雨。内部管控机制的实施的基础是高效的内部控制评价,内部管控基于此评价方法来持续发挥作用。因为,内管管控评价方法是否合理,导致内控评价直接影响。现阶段应用范围交广的方法是模糊评价法,无论是多因素同时影响,还是模糊性和定性判断等问题都可以使用这种评价方法。通过观察S教育培训机构可以得知,其销售业务环节的内部控制情况能够严重的影响整个公司的资金流以及后续的持续经营活动,所以本研究以S教育培训机构销售业务作为研究对象,借助于模糊评价法分析评价其销售业务内部控制开展情况,发现存在的问题和不足,提出相应的改变办法,以此来实现销售业务内部控制执行力的提升。本研究针对S教育培训机构内部管理的真实情况进行研究分析,查摆存在的主要问题,然后利用AHP法和模糊评价法综合评价该公司销售业务内部控制情况,基于发现的问题,有针对性的提出行之有效的解决办法,进一步优化该公司的内部控制体系,从而实现企业市场竞争力的提升。除此之外,也希望本文的研究结果能够为我国其他中小企业优化和完善内部控制体系的时候提供一定的参考。

关键词：教育培训机构销售业务模糊分析法内部控制

Needs assessment and expectations regarding evidence-based practice knowledge acquisition and training activities:A cross-sectional study of healthcare personnel in China

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International Journal of Nursing Sciences 2022年第1期9卷 100-106页

作者： Janita Pak Chun chau wai Tong Chien Xu Liu Yan Hu Yinghui Jin The Nethersole School of Nursing Faculty of MedicineThe Chinese University of Hong KongHong KongChina School of Nursing Fudan UniversityShanghaiChina Centre for Evidence-Based and Translational Medicine Zhongnan Hospital of Wuhan UniversityWuhanChina

Objectives Evidence-based healthcare contributes to the improvement of healthcare quality and informs healthcare *** provision of timely high-quality evidence is always required to fulfil the ever-changing needs and expectations of healthcare *** study aimed to assess the needs and expectations of healthcare personnel regarding evidence-based healthcare in *** We conducted a cross-sectional online survey from December 8,2020 to January 15,2021 involving 901 participants across *** providers,policy makers,researchers and educators,and full-time postgraduate medical and nursing students working/living in China were eligible to participate.A self-developed questionnaire was *** Participants generally agreed that health-related research evidence was ***-based resources,such as Cochrane resources,were only known or used by about half of the respondents due to difficulties related to availability and *** types of resources,topics of evidence,and themes of workshops were of particular interest to most of the *** The dissemination and translation of evidence,provision of more support in evidence availability,offering evidence-based training,and determining the most in-demand research areas have been identified as priority areas of work which could fulfil the needs and expectations of healthcare personnel in China.

关键词： Administrative personnel Evidence-based practice Health personnel Surveys and questionnaires

Important role of cardiac spect imaging in patients undergoing percutaneous transluminal coronary angioplasty

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Chinese Medical Journal 1999年第3期 64-67页

作者： Babington Chun kuen Yung, wai Kwong Chan, Chiu Sun Yue, wai chau Fan, Kwok Fai Leung Amy Siu ling Fung and James Chi sang Chan Department of Radiology and Organ Imaging (Yung CK, Fan WC, Chan CS) & Department of Medicine and Geriatrics (

Objective To examine the utilization and contribution of cardiac perfusion scans to patients undergoing percutaneous transluminal coronary angioplasty. Methods From July 1996 to January 1998, 34 patients underwent percutaneous transluminal coronary angioplasty and cardiac SPECT imaging was studied. Twenty five patients had pre procedure SPECT scans. The agreement between angioplasty strategies and SPECT findings of ischemia and hypokinesia was *** When radionuclide imaging was performed before revascularization procedures, 84% of the patients had intervention strategies guided by scan findings. Perfusion scan findings including extent and severity of ischemia, degree of hypokinesia directed the selection of target vessel for angioplasty in the patient subgroup with multi vessel disease. Post angioplasty radionuclide cardiac scans were performed only on symptomatic patients, demonstrating ischemia and hypokinesia in most of them, conceivably reflected the selection *** We recommend routine pre and post angioplasty radionuclide imaging with multigated scans for wall motion assessment for all patients receiving coronary intervention.

关键词： multigated SPECT angioplasty ischemia hypokinesia