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An Adjusted Gray map Technique for Constructing Large Four-Level Uniform Designs

Journal of Systems Science & Complexity 2023年第1期36卷 433-456页

作者： ELSAWAH A m VISHWAkARmA G k mOHAmED H S FANG kai-tai Department of Statistics and Data Science Faculty of Science and TechnologyBeijing Normal University-Hong Kong Baptist University United International CollegeZhuhai 519087China Guangdong Provincial key Laboratory of Interdisciplinary Research and Application for Data Science BNU-HKBU United International CollegeZhuhai 519087China Department of mathematics Faculty of ScienceZagazig UniversityZagazig 44519Egypt Department of mathematics&Computing Indian Institute of Technology DhanbadDhanbad 826004India College of Transportation and Civil Engineering Fujian Agriculture and Forestry UniversityFuzhou 350002China The key Lab of Random Complex Structures and Data Analysis The Chinese Academy of SciencesBeijing 100190China

A uniform experimental design(UED)is an extremely used powerful and efficient methodology for designing experiments with high-dimensional inputs,limited resources and unknown underlying models.A UED enjoys the following two significant advantages:(i)It is a robust design,since it does not require to specify a model before experimenters conduct their experiments;and(ii)it provides uniformly scatter design points in the experimental domain,thus it gives a good representation of this domain with fewer experimental trials(runs).many real-life experiments involve hundreds or thousands of active factors and thus large UEDs are *** large UEDs using the existing techniques is an NP-hard problem,an extremely time-consuming heuristic search process and a satisfactory result is not *** paper presents a new effective and easy technique,adjusted Gray map technique(AGmT),for constructing(nearly)UEDs with large numbers of four-level factors and runs by converting designs with s two-level factors and n runs to(nearly)UEDs with 2^(t−1)s four-level factors and 2tn runs for any t≥0 using two simple transformation *** justifications for the uniformity of the resulting four-level designs are given,which provide some necessary and/or sufficient conditions for obtaining(nearly)uniform four-level *** results show that the AGmT is much easier and better than the existing widely used techniques and it can be effectively used to simply generate new recommended large(nearly)UEDs with four-level factors.

关键词： Aberration adjusted Gray map technique Gray map technique Hamming distance moment aberration threshold accepting algorithm uniform design

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System Dynamic modelling of Patient Flow and Transferral Problem in a mixed Public-Private Healthcare System:A Case Study of Hong kong SAR

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Journal of Systems Science and Systems Engineering 2020年第5期29卷 590-608页

作者： C.k.m.LEE W.C.tai kam k.H.NG Department of Industrial and Systems Engineering The Hon g Kong Polytechnic UniversityHung HornHong Kong SARChina School of mechanical and Aerospace Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

The current healthcare system in Hong kong is experiencing pressure due to constrained resources,with dramatic increases in inpatient services queue lengths,dissatisfaction with the working environment,unacceptable workforce arrangements and high turnover rate of hospital *** maintain the robustness of the healthcare system and a sustainable inpatients flow,the Food and Health Bureau launched a public-private partnership programme to utilise the resources of the public and private *** research investigates the potential for extension of the programme and further enhancing the sustainability of the long-term inpatient services under a mixed public-private healthcare policy via system dynamic *** findings show that an increase of human resources in public hospitals does not substantially improve inpatient flow rate ***,the results from the system dynamic approach provide insights into the expansion of the service areas of the programme and suggest increasing the number of referrals to private hospitals.

关键词： System dynamic models scenario analysis inpatient transferral mixed public-private healthcare system

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Thermal bleaching of optical absorption and photoluminescence spectra of γ-irradiated CaF_2:Dy:Pb:Na single crystals

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Journal of Rare Earths 2010年第4期28卷 493-497页

作者： S.m. moses kennedy Department of Physics S.S.N. College of Engineering Rajiv Gandhi Salai Kalavakkam-603 110 Chennai Tamil Nadu India

The variation of the optical absorption (OA) and photoluminescence (PL) spectra with temperature was studied on γ-irradiated CaF2:Dy:Pb:Na single crystals. The OA spectrum showed bands around 2.05, 3.20, 3.82 and 6.20 eV which could be attributed to different sodium associated (SA) colour centres (CCs) such as mNa and RA+ . Heating the crystal indicated the annihilation and formation of different SACCs. The excitation spectrum for the characteristic Dy3+ emission at 2.14 eV immediately after irradiation was...

关键词： calcium fluoride optical absorption photoluminescence colour centres dysprosium lead sodium rare earths

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IGF1-PI3k-induced physiological cardiac hypertrophy:Implications for new heart failure therapies,biomarkers,and predicting cardiotoxicity

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Journal of Sport and Health Science 2021年第6期10卷 637-647,I0001页

作者： Sebastian Bass-Stringer Celeste m.k.tai Julie R.mcmullen Baker Heart and Diabetes Institute MelbourneVIC 3004Australia Department of Physiology Anatomy and MicrobiologyLa Trobe UniversityBundooraVIC 3086Australia Department of Diabetes Central Clinical SchoolMonash UniversityMelbourneVIC 3004Australia Department of Physiology and Department of medicine Alfred Hospital Monash UniversityMelbourneVIC 3004Australia

Heart failure represents the end point of a variety of cardiovascular *** is a growing health burden and a leading cause of death *** date,limited treatment options exist for the treatment of heart failure,but exercise has been well-established as one of the few safe and effective interventions,leading to improved outcomes in ***,a lack of patient adherence remains a significant barrier in the implementation of exercise-based therapy for the treatment of heart *** insulin-like growth factor 1(IGF1)phosphoinositide 3-kinase(PI3k)pathway has been recognized as perhaps the most critical pathway for mediating exercisedinduced heart growth and ***,we discuss how modulating activity of the IGF1PI3k pathway may be a valuable approach for the development of therapies that mimic the protective effects of exercise on the *** outline some of the promising approaches being investigated that utilize PI3k-based therapy for the treatment of heart *** discuss the implications for cardiac pathology and cardiotoxicity that arise in a setting of reduced PI3k ***,we discuss the use of animal models of cardiac health and disease,and genetic mice with increased or decreased cardiac PI3k activity for the discovery of novel drug targets and biomarkers of cardiovascular disease.

关键词： Cardiac protection Cardiotoxicity Exercise Heart failure IGF1 PI3k Therapies

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Cross-Entropy Loss for Recommending Efficient Fold-Over Technique

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Journal of Systems Science & Complexity 2021年第1期34卷 402-439页

作者： WENG Lin-Chen ELSAWAH A m FANG kai-tai Division of Science and Technology Beijing Normal University-Hong Kong Baptist University United International CollegeZhuhai 519085China Department of mathematics Faculty of ScienceZagazig UniversityZagazig 44519Egypt The key Lab of Random Complex Structures and Data Analysis Chinese Academy of SciencesBeijing 100190China

Due to the limited resources and budgets in many real-life projects, it is unaffordable to use full factorial experimental designs and thus fractional factorial(FF) designs are used instead. The aliasing of factorial effects is the price we pay for using FF designs and thus some significant effects cannot be estimated. Therefore, some additional observations(runs) are needed to break the linages among the factorial effects. Folding over the initial FF designs is one of the significant approaches for selecting the additional runs. This paper gives an in-depth look at fold-over techniques via the following four significant contributions. The first contribution is on discussing the adjusted switching levels foldover technique to overcome the limitation of the classical one. The second contribution is on presenting a comparison study among the widely used fold-over techniques to help experimenters to recommend a suitable fold-over technique for their experiments by answering the following two fundamental questions:Do these techniques dramatically lessen the confounding of the initial designs, and do the resulting combined designs(combining initial design with its fold-over) via these techniques have considerable difference from the optimality point of view considering the markedly different searching domains in each technique? The optimality criteria are the aberration, confounding, Hamming distance and uniformity. many of these criteria are given in sequences(patterns) form, which are inconvenient and costly to represent and compare, especially when the designs have many factors. The third innovation is on developing a new criterion(dictionary cross-entropy loss) to simplify the existing criteria fromsequence to scalar. The new criterion leads to a more straightforward and easy comparison study. The final contribution is on establishing a general framework for the connections between initial designs and combined designs based on any fold-over technique.

关键词： Aberration confounding cross-entropy dictionary ordering fold-over Hamming distance loss function uniformity

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management of stage Ⅳ rectal cancer: Palliative options

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World Journal of Gastroenterology 2011年第7期17卷 835-847页

作者： Sean m Ronnekleiv-kelly Gregory D kennedy Department of Surgery Section of Colon and Rectal Surgery University of Wisconsin School of Medicine and Public Health 600 HighlandAvenue G4/701A CSC Madison WI 53792 United States

Approximately 30% of patients with rectal cancer present with metastatic disease. many of these patients have symptoms of bleeding or obstruction. Several treatment options are available to deal with the various complications that may afflict these patients. Endorectal stenting, laser ablation, and operative resection are a few of the options available to the patient with a malignant large bowel obstruction. A thorough understanding of treatment options will ensure the patient is offered the most effective therapy with the least amount of associated morbidity. In this review, we describe various options for palliation of symptoms in patients with metastatic rectal cancer. Additionally, we briefly discuss treatment for asymptomatic patients with metastatic disease.

关键词： Palliative therapy Rectal cancer malignant bleeding malignant obstruction Endorectal stenting Laser ablation

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Efficient photocatalytic reduction of CO2 to formate by a molecular noble metal-free system

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Science China Chemistry 2025年第1期 152-156页

作者： Lihua Zhang Lingjing Chen Huatian Shi Yue Wei Gui Chen tai-Chu Lau School of Environment and Civil Engineering Research Center for Eco-environmental Engineering Dongguan University of Technology Department of Chemistry and Institute of molecular Functional materials City University of Hong Kong

Reducing CO2to carbon-neutral solar fuels can not only alleviate the energy demand but also mitigate the greenhouse *** present,developing an efficient non-noble metal photo/electrocatalytic system for converting CO2to a specific product beyond CO is still a big ***,we report a new cobalt complex bearing 2,2′-bi-1,10-phenanthroline ligand that can photocatalytically reduce CO2to formate （HCOO-）.Turnover number （TON） for HCOO-up to 677 with 99%selectivity can be achieved using organic dyes purpurin as photosensitizer and 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole （BIH） as sacrificial reductant in a CO2-saturated NmP/TEA （v/v,3:1） solution under visible light *** potential electrolysis at-1.41 V （***/Ag Cl） in the presence of 12 m m Et3NHBF4also produced HCOO-with Faradaic efficiency of 39%.Spectroscopic and electrochemical studies suggest that a[CoI-H]species is the key intermediate for CO2reduction.

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mitochondrial recruitment in myelin:an anchor for myelin dynamics and plasticity?

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Neural Regeneration Research 2024年第7期19卷 1401-1402页

作者： Jean-David m.Gothié Timothy E.kennedy Department of Neurology and Neurosurgery Montreal Neurological InstituteMcGill UniversityMontrealQCCanada

Optimal propagation of neuronal electrical impulses depends on the insulation of axons by myelin,produced in the central nervous system by *** is an extension of the oligodendrocyte plasma membrane,which wraps around an axon to form a compact multi-layered *** is composed of a substantially higher proportion of lipids compared to other biological membranes and enriched in a small number of specialized proteins.

关键词： plasticity insulation dynamics

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Construction of PdS@mIL-125-NH_(2)@ZnS type-Ⅱ heterostructure with efficient charge separation for boosted photocatalytic hydrogen evolution

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Journal of materials Science & Technology 2023年第14期145卷 116-124页

作者： Zige tai Guotai Sun Ting Wang Zhihui Li Jinge tai Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China State key Laboratory for mechanical Behavior of materials Xi’an Jiaotong UniversityXi’an 710049China The Second Affiliated Hospital of Air Force military medical University Xi’an 710038China

A new photocatalyst,PdS@NH_(2)-mIL-125(Ti)@ZnS(PdS/m125/ZnS)heterojunction is fabricated for photo-catalytic H_(2)generation for the first time,where PdS nanoparticles are anchored in the pore of m125 by utilizing its confinement effect,and the ZnS is closely wrapped on the surfaces of the *** optimal photocatalyst exhibits a significantly enhanced H_(2)generation rate of 1164.2μmol/g/h,while the pure m125 only displays a H_(2)generation rate of 16.7μmol/g/*** resultant improvement can be ascribed to the following comprehensive *** hierarchical structure built by PdS,m125,and ZnS can form lots of intimate interfaces,offer abundant sites for reaction,and smooth channels for charge carri-ers due to the porous characteristics of ***,m125 and ZnS with inner defect levels form an analogous type-II heterojunction assisted by PdS co-catalyst,which greatly promotes charge *** work may supply a new avenue to design mOFs photocatalysts for energy conversion.

关键词： Hydrogen evolution Water splitting metal-organic framework Defect levels Type-II heterostructure

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Adsorption Isotherm Study of Activated Fruit Peels for Copper Removal

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Journal of Harbin Institute of Technology(New Series) 2022年第3期29卷 93-100页

作者： S.Y.tai L.L.Fong m.k.Chan P.k.Bullar Centre for Water Research Faculty of EngineeringBuilt Environment and Information TechnologySEGi University Sdn BhdPetaling Jaya 47810SelangorMalaysia

Heavy metal polluted water threatens the integrity of *** use of agricultural waste as adsorbent becomes popular due to its biodegradability and ***,limited research works has been done to process agricultural waste for heavy metal adsorption *** objective of this study is to propose a new approach to treat banana peel using ZnCl_(2) prior to alkali and acid treatment and explore the potential of dragon fruit peels as the adsorbent for Cu^(2+)*** adsorption isotherm was adopted to identify the adsorption mechanism and four statistical parameters were calculated for model verification *** experiment was conducted by dispersing ZnCl_(2) treated and untreated adsorbents into Cu^(2+) *** showed that ZnCl_(2) treated adsorbents performed better in terms of Cu^(2+) removal compared with untreated adsorbents due to higher surface area for Cu^(2+) *** treated banana peel(Act.-B)performed approximately 30%better than the treated dragon fruit peel(Act.-D)due to the presence of hydroxyl and carboxyl *** equilibrium adsorptive capacity of Act.-B was 1872.8 mg Cu^(2+)/g and the experimental data fitted Freundlich isotherm well with R^(2)=0.9978,0.0161 of residual sum of error(SSE),0.0068 of χ^(2),and 0.0567 of root mean square error(RmSE)*** suggests non⁃linear adsorption and multilayer adsorption on heterogenous ***,it is recommended to further improve the surface properties of Act.-B by steam pyrolysis and surface modification.

关键词： banana peel adsorbents dragon fruit peel adsorbents copper FTIR isotherm

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