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Energy-aware scheduling with reconstruction and frequency equalization on heterogeneous systems

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Frontiers of Information Technology & Electronic Engineering 2015年第7期16卷 519-531页

作者： Yong-xing liu ken-li LI Zhuo TANG Ke-qin LI College of Computer Science and Electronic Engineering Hunan University Changsha 410082 China Department of Computer Science State University of New York New Paltz New York 12561 USA

With the increasing energy consumption of computing systems and the growing advocacy for green computing, energy efficiency has become one of the critical challenges in high-performance heterogeneous computing systems. Energy consumption can be reduced by not only hardware design but also software design. In this paper, we propose an energy-aware scheduling algorithm with equalized frequency, called EASEF, for parallel applications on heterogeneous computing systems. The EASEF approach aims to minimize the finish time and overall energy consumption. First, EASEF extracts the set of paths from an application. Then, it reconstructs the application based on the extracted set of paths to achieve a reasonable schedule. Finally, it adopts a progressive way to equalize the frequency of tasks to reduce the total energy consumption of systems. Randomly generated applications and two real-world applications are examined in our experiments. Experimental results show that the EASEF algorithm outperforms two existing algorithms in terms of makespan and energy consumption.

关键词： Directed acyclic graph Dynamic voltage scaling Energy aware Heterogeneous systems Taskscheduling

An iterative approach to enhance the clinical learning experience in Macao nursing education

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International Journal of Nursing Sciences 2019年第2期6卷 216-220页

作者： Ming liu Yok Man Chan Stephen Tee ken Gu Zhi Min Luo Thomas K.S.Wong School of Health Sciences Macao Polytechnic Institute Macao China Faculty of Health and Social Sciences Bournemouth University UK Knowledge Transfer and Consultancy Company Limited Hong Kong China

Objective: The aim of this study was to reduce or eliminate the stressors to enhance nursing students' clinical learning experience through implementation of an iterative approach that developed a personalised response to student ***: A prospective cohort research design was applied to collect data from a sample of undergraduate nursing students across the four study *** iterative approach was employed to improve students' learning experience and the Stressors in Nursing Students Scale-Chinese Version (SINS-CN) was used to measure student *** problems encountered by students were identified,refined and the responding solutions were worked out and implemented among this group of students through their first year to fourth ***: The overall SINS-CN mean score (2.17-2.82) of students was declined to a moderate ***: Having implemented iterative approach to address factors that led to stressful environments encountered by the nursing students,the overall stress score and each sub-dimension score decreased ***,it is recommended that this approach could be adopted by other colleagues in the nursing arena around the world.

关键词： Clinical Clerkship Nursing Nursing education Stressors Students

Thermally activated delayed fluorescence carbazole-triazine dendrimer with bulky substituents

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Aggregate 2024年第1期5卷 236-243页

作者： Hiroki Ikebe Kohei Nakao Eri Hisamura Minori Furukori Yasuo Nakayama Takuya Hosokai Minlang Yang Guanting liu Takuma Yasuda ken Albrecht Interdisciplinary Graduate School of Engineering Sciences Kyushu UniversityFukuokaJapan Institute for Materials Chemistry and Engineering Kyushu UniversityKasugaJapan Department of Pure and Applied Chemistry Graduate School of Science and TechnologyTokyo University of ScienceNodaChibaJapan National Metrology Institute of Japan(NMIJ) National Institute of Advanced Industrial Science and Technology(AIST)TsukubaIbarakiJapan Institute for Advanced Study Kyushu UniversityNishi-kuFukuokaJapan

Carbazole-triazine dendrimers with a bulky terminal substituent were synthesized,and the thermally activated delayed fluorescence(TADF)property was *** to unsubstituted carbazole dendrimers,dendrimers with bulky terminal substituents showed comparable to better photoluminescence quantum yields(PLQY)in neat ***(PF)-substituted dendrimers showed the highest PLQY of 81%,a smallΔEst of 0.06 eV,and the fastest reverse intersystem crossing(RISC)rate of∼1×10^(5 )s^(−1) compared to other *** measurements of dendrimers and dendrons(fragments)indicate that the close proximity of the triplet energy of phenylfluorene-substituted carbazole dendrons(^(3)LE)to that of phenylfluorene-substituted dendrimers(^(1)CT,^(3)CT)contributes to RISC promotion and improves TADF *** modification fine-tunes the energy level and suppresses intermolecular interactions,and this study provides a guideline for designing efficient solution-processable and non-doped TADF materials.

关键词： dendrimer OLED TADF 1 INTRODUCTION Thermally activated delayed fluorescence(TADF)materials which are inexpensive and highly efficient alternatives to fluorescent

Absorbed Bioactive Compounds Replicate GuanxinⅡ-Induced Endothelium-Associated in/ex vivo Vasodilation

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Chinese Journal of Integrative Medicine 2024年第5期30卷 387-397页

作者： XU Min liu Hao SU Meng-qing LI Lan YU Ai-ling CHEN ken HUANG Yun-ke ZHAO Qiu-long HUANG Wen-ya HUANG Xi Institute of Traditional Chinese Medicine Related Comorbid Depression Nanjing University of Chinese MedicineNanjing 210029China Department of Gynecology Women's HospitalZhejiang University School of MedicineHangzhou 310053China

Objective:To develop an interference-free and rapid method to elucidate GuanxinⅡ(GXⅡ)'s representative vasodilator absorbed bioactive compounds(ABCs)among enormous ***:The contents of ferulic acid,tanshinol,and hydroxysafflor yellow A(FTA)in GXⅡ/rat serum after the oral administration of GXⅡ(30 g/kg)were detected using ultra-performance liquid chromatography-mass *** 18 rats were randomly assigned to the control group(0.9%normal saline),GXⅡ(30 g/kg)and FTA(5,28 and 77 mg/kg)by random number table *** coronary flow velocity-time integral(VTI),i.e.,coronary flow or coronary flow-mediated dilation(CFMD),and endothelium-intact vascular tension of isolated aortic rings were *** 12 h of exposure to blank medium or 0.5 mmol/L H_(2)O_(2),endothelial cells(ECs)were treated with post-dose GXⅡof supernatant from deproteinized serum(PGSDS,300μL PGSDS per 1 m L of culture medium)or FTA(237,1539,and 1510 mg/m L)for 10 min as control,H_(2)O_(2),PGSDS and FTA *** oxide(NO),vascular endothelial growth factor(VEGF),endothelin-1(ET-1),superoxide dismutase(SOD),malondialdehyde(MDA)and phosphorylated phosphoinositide 3 kinase(p-PI3K),phosphorylated protein kinase B(p-AKT),phosphorylated endothelial nitric oxide synthase(p-e NOS)were *** was developed as a GXⅡproxy of ex vivo herbal crude ***:PGSDS effectively eliminates false responses caused by crude GXⅡ*** doses equaled the contents in GXⅡ/its post-dose serum,FTA accounted for 98.17%of GXⅡ-added CFMD and 92.99%of PGSDS-reduced vascular *** ECs,FTA/PGSDS was found to have significant antioxidant(lower MDA and higher SOD,P<0.01)and endothelial function-protective(lower VEGF,ET-1,P<0.01)*** increases in aortic relaxation,endothelial NO levels and phosphorylated PI3K/Akt/e NOS protein induced by FTA/PGSDS were markedly abolished by NG-nitro-L-arginine methyl ester(L-NA,e NOS inhibitor)and wortmannin(PI3K/AKT inhibitor

关键词： ultra-performance liquid chromatography-mass spectrometry endothelium-dependent vasodilation herbal extract GuanxinⅡ absorbed bioactive compound

Evaluating the emotion regulation of positive mood states among people with bipolar disorder using hierarchical clustering

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World Journal of Psychiatry 2021年第9期11卷 619-634页

作者： Sunny Ho-Wan Chan Chong Ho Yu ken Ho Kan liu Charlie Lau Anna On Yee Fung Samson Tse Department of Rehabilitation Sciences The Hong Kong Polytechnic UniversityHong KongChina School of Behavioral and Applied Science Azusa Pacific UniversityAzusaCA 91702United States Department of Social Work and Social Administration The University of Hong KongHong KongChina

BACKGROUND People with bipolar disorder(BD)frequently struggle with the recurrence of affective ***,the interplay between coping mechanism and positive mood state remains *** To explore the associations among behavioral approach system(BAS)sensitivity level,coping,and positive mood states among people with *** Using a cross-sectional study design,90 participants with BD were presented with four BAS-activating life event scenarios and assessed with regard to their BAS trait sensitivity,coping flexibility,and mood states.A hierarchical clustering method was used to identify different groups with different styles of *** hierarchical regression analyses were conducted to examine the mediating and moderating roles of different components of coping on mood *** A three-cluster solution was found to best fit the present data *** findings showed that a low mass of coping combined with low BAS sensitivity level protects people with BD from detrimentally accentuating mood states when they encounter BAS-activating life ***,coping flexibility is demonstrated to mediate and moderate the relationships between BAS sensitivity level and mood ***,subduing the perceived controllability and reducing the use of behavioral-activation/emotion-amplifying coping strategies could help buffer the effect of positive *** The judicious use of coping in emotion regulation for people with BD when encountering BAS-activating life events was *** applications and theoretical implications are highlighted.

关键词： Bipolar disorder Mood regulation Cluster analysis Coping style Positive emotions

Bacterial nanocellulose assembly into super-strong and humidity-responsive macrofibers

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Journal of Bioresources and Bioproducts 2024年第3期9卷 369-378页

作者： Yadong Zhao Zheng Yang Rusen Zhou Bin Zheng Meiling Chen Fei liu Wenhua Miao Renwu Zhou Patrick Cullen Zhenhai Xia Liming Dai Kostya(ken)Ostrikov School of Food and Pharmacy Zhejiang Ocean UniversityZhoushan 316022China State Key Laboratory of Electrical Insulation and Power Equipment Center for Plasma BiomedicineXi'an Jiaotong UniversityXi'an 710049China School of Chemical and Biomolecular Engineering University of SydneySydney 2006Australia School of Chemistry and Physics and Centre for Materials Science Queensland University of TechnologyBrisbane 4000Australia Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Australian Carbon Materials Centre(A-CMC) School of Chemical EngineeringUniversity of New South WalesSydneyNew South Wales 2052Australia

Cellulose macrofibers (MFs) are gaining increasing interest as natural and biodegradable alternatives to fossil-derived polymers for both structural and functional applications. However, simultaneously achieving their exceptional mechanical performance and desired functionality is challenging and requires complex processing. Here, we reported a one-step approach using a tension-assisted twisting (TAT) technique for MF fabrication from bacterial cellulose (BC). The TAT stretches and aligns BC nanofibers pre-arranged in hydrogel tubes to form MFs with compactly assembled structures and enhanced hydrogen bonding among neighboring nanofibers. The as-prepared BC MFs exhibited a very high tensile strength of 1 057 MPa and exceptional lifting capacity (over 340 000 when normalized by their own weight). Moreover, due to the volume expansion of BC nanofibers upon water exposure, BC MFs quickly harvested energy from environmental moisture to untwist the bundled networks, thus generating a torsional spinning with a peak rotation speed of 884 r/(min·m). The demonstrated rapid and intense actuation response makes the MFs ideal candidates for diverse humidity-response-based applications beyond advanced actuators, remote rain indicators, intelligent switches, and smart curtains.

关键词： Nanocellulose assembly Cellulose macrofibers Super-strong Humidity-responsive actuation Moisture Fast actuation

Degradation of differently processed Mg-based implants leads to distinct foreign body reactions(FBRs)through dissimilar signaling pathways

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Journal of Magnesium and Alloys 2023年第6期11卷 2106-2124页

作者： Xiaosong liu Guoqiang Chen Xiongxiong Zhong Tianfang Wang Xiaohong He Weipeng Yuan Pingping Zhang Ying liu Dongming Cao Shu Chen ken-ichi Manabe Zhengyi Jiang Tsuyoshi Furushima Damon kent Yang Chen Guoying Ni Mingyong Gao Hejie Li Cancer Research Institute First People’s Hospital of FoshanFoshanGuangdong 528000China Department of Rheumatology First People’s Hospital of FoshanFoshanGuangdong 528000China The Second Clinical Medical College of Jinan University Shenzhen People’s HospitalShenzhenGuangdong 510632China Genecology Research Centre University of the Sunshine CoastMaroochydore BCQLD 4558Australia Department of Medical Imaging First People’s Hospital of FoshanFoshanGuangdong 528000China Department of Surgery First People’s Hospital of FoshanFoshanGuangdong 528000China Department of Mechanical Engineering Graduate School of Science and EngineeringTokyo Metropolitan University1-1 Minami-osawaHachiojiTokyo 192-0397Japan School of Mechanical MaterialsMechatronic and Biomedical EngineeringFaculty of Engineering and Information SciencesUniversity of WollongongNorthfields AveWollongong NSW 2522Australia Institute of Industrial Science Department of Mechanical and Biofunctional Systemsthe University of Tokyo4-6-1KomabaMeguroTokyo 153-8505Japan School of Science Technology and EngineeringUniversity of the Sunshine CoastMaroochydore BCQLD 4558Australia

Mg alloys have mechanical properties compatible with human ***,their rapid degradation and associated foreign body reactions in vivo significantly limit their application for human *** this study,three differently processed Mg alloys,pure Mg(PM),cold extruded Mg alloy AZ31(CE AZ31),and fully annealed AZ31 Mg alloy(FA AZ31)were comparatively investigated for their potential as implants using a rat *** three implanted Mg alloys do not show any impact on hepato-and renal function,nor any signs of observable changes to vital *** analysis of tissues directly contacting the implants 2.5 months post implantation revealed that FA AZ31 activates very few inflammation and immune associated signaling pathways;while the CE AZ31 and PM produce more significant inflammatory responses as confirmed by cytokine array ***,FA AZ31 activated pathways for cell organization and development that may improve the recovery of injured ***,EBSD analysis reveals that the FA AZ31 alloy has a higher ratio of first-order pyramidal orientated(10–11){10–1–2}grain texture with a value of 0.25,while PM and CE AZ31 alloys have lower ratios of first-order pyramidal orientated texture with the values of 0.16 and 0.17,*** is associated with recovery and recrystallisation during annealing which promotes grain texture which exhibits enhanced degradation behaviours and induces a more limited immune response in *** conclusion,the FA AZ31 demonstrated better biocompatibility and corrosion resistance and is a promising candidate for metal-based degradable implants which warrants further investigation.

关键词： Toxicity test Proteomics analysis Signaling pathway Biocompatibility and corrosion resistance First-order pyramidal slip system Recovery and recrystallization Foreign body reactions(FBRs)

胃内球囊术治疗不同体质量指数肥胖症的短期临床疗效

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中华消化外科杂志 2022年第12期21卷 1573-1578页

作者： Daniel liu Qiuye Cheng Sam Alhayo Mark Magdy ken Loi 新南威尔士大学圣乔治私立医院上消化道和减重外科悉尼2217

目的探讨胃内球囊术治疗不同体质量指数(BMI)肥胖症的短期临床疗效。方法采用回顾性描述性研究方法。收集2017年1月至2021年12月3家医学中心收治的62例(赫斯特维尔私立医院56例、新南威尔士大学圣乔治私立医院4例、东悉尼私立医院2例)不... 详细信息

目的探讨胃内球囊术治疗不同体质量指数(BMI)肥胖症的短期临床疗效。方法采用回顾性描述性研究方法。收集2017年1月至2021年12月3家医学中心收治的62例(赫斯特维尔私立医院56例、新南威尔士大学圣乔治私立医院4例、东悉尼私立医院2例)不同BMI肥胖症行胃内球囊术患者的临床资料;男15例,女47例;年龄为45.1(18.0~67.0)岁;BMI为35.1(27.8~48.4)kg/m^(2)。62例患者中,27 kg/m^(2)≤BMI<35 kg/m^(2)33例,BMI≥35 kg/m^(2)29例。观察指标:(1)首次手术及术后并发症情况。(2)首次术后随访情况。(3)再次行胃内球囊术及术后并发症情况。(4)再次行胃内球囊术后随访情况。采用门诊方式进行随访。患者于术后1、3、6个月进行随访,了解术后并发症发生情况及减重效果。正态分布的计量资料以x±s表示,偏态分布的计量资料以M(范围)表示。计数资料以绝对数表示。结果(1)首次手术及术后并发症情况。62例肥胖症患者均顺利施行首次胃内球囊术。62例患者中,45例发生术后并发症,包括胃食管反流38例,吞咽困难或打嗝12例,上腹部疼痛9例,恶心呕吐4例,同一例患者可合并多种并发症。33例27 kg/m^(2)≤BMI<35 kg/m^(2)患者和29例BMI≥35 kg/m^(2)患者发生上述并发症分别为21、8、7、2例和17、4、2、2例。(2)首次胃内球囊术后随访情况。62例肥胖症患者中,完成术后1、3、6个月随访分别为52、46、38例,其中27 kg/m^(2)≤BMI<35 kg/m^(2)和BMI≥35 kg/m^(2)分别为30、25、20例和22、21、18例。62例患者中,选择提前取出胃内球囊15例,包括因持续恶心呕吐7例,对短期减重效果不满意6例,急性上腹部疼痛、妊娠各1例。30例27 kg/m^(2)≤BMI<35 kg/m^(2)患者和22例BMI≥35 kg/m^(2)患者术后1个月体质量下降分别为(4.8±3.0)kg和(6.6±2.8)kg;25例27 kg/m^(2)≤BMI<35 kg/m^(2)患者和21例BMI≥35 kg/m^(2)患者术后3个月体质量下降分别为(6.7±4.4)kg和(10.6±4.8)kg;20例27 kg/m^(2)≤BMI<35 kg/m^(2)患者和18例BMI≥35 kg/m^(2)患者术后6个月体质量下降分别为(8.5±4.8)kg和(9.8±3.9)kg,多余体质量减轻百分比分别为53%±26%和29%±15%,总体质量减轻率分别为14%±5%和10%±5%。(3)再次行胃内球囊术及术后并发症情况。完成首次术后6个月随访的38例肥胖症患者中,9例27 kg/m^(2)≤BMI<35 kg/m^(2)和7例BMI≥35 kg/m^(2)患者选择取出首次胃内球囊后立即再次行胃内球囊术,再次手术后发生胃食管反流、吞咽困难或打嗝、上腹部疼痛、恶心呕吐分别为4、3、0、0例和4、0、2、1例。(4)再次行胃内球囊术后随访情况。16例选择再次行胃内球囊术患者均完成术后6个月随访,无患者提前取出胃内球囊。9例27 kg/m^(2)≤BMI<35 kg/m^(2)患者和7例BMI≥35 kg/m^(2)患者术后6个月体质量下降分别为(8.8±8.5)kg和(18.9±9.7)kg,多余体质量减轻百分比分别为44%±38%和41%±15%。结论胃内球囊术应用于BMI≥27 kg/m^(2)肥胖症患者可获得较好短期减重效果,胃食管反流、吞咽困难或打嗝、上腹部疼痛、恶心呕吐是术后常见并发症。

关键词：肥胖症减重代谢外科减重手术胃内球囊疗效

Switching O-O bond formation mechanism between WNA and I2M pathways by modifying the Ru-bda backbone ligands of water-oxidation catalysts

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Journal of Energy Chemistry 2021年第3期30卷 815-821页

作者： Biaobiao Zhang Shaoqi Zhan Tianqi liu Linqin Wang A.ken Inge Lele Duan Brian J.J.Timmer Oleksandr Kravchenko Fei Li Marten S.G.Ahlquist Licheng Sun Department of Chemistry KTH Royal Institute of Technology10044 StockholmSweden Department of Theoretical Chemistry&Biology School of Engineering Sciences in Chemistry Biotechnology and HealthKTH Royal Institute of Technology10691 StockholmSweden Department of Materials and Environmental Chemistry Stockholm University10691 StockholmSweden Department of Chemistry Southern University of Science and Technology(SUSTech)Shenzhen 518055GuangdongChina State Key Laboratory of Fine Chemicals Institute of Artificial PhotosynthesisDUT–KTH Joint Education and Research Center on Molecular DevicesDalian University of Technology(DUT)Dalian 116024LiaoningChina

Understanding the seven coordination and O-O coupling pathway of the distinguished Ru-bda catalysts is essential for the development of next generation efficient water-oxidation catalysts based on earthabundant *** work reports the synthesis,characterization and catalytic properties of a monomeric ruthenium catalyst Ru-bnda(H2 bnda=2,2’-bi(nicotinic acid)-6,6’-dicarboxylic acid)featuring steric hindrance and enhanced hydrophilicity on the *** experimental evidence with systematic density functional theory calculations on the Ru-bnda and related catalysts Ru-bda(H_(2)bda=2,2’-bipyridine-6,6’-dicarboxylic acid),Ru-pda(H_(2)pda=1,10-phenanthroline-2,9-dicarboxylic acid),and Ru-biqa(H_(2)biqa=(1,1’-biisoquinoline)-3,3’-dicarboxylic acid),we emphasized that seven coordination clearly determines presence of Ru^(Ⅴ)=O with high spin density on the ORu^(Ⅴ)=O atom,*** with radical properties,which is one of the necessary conditions for reacting through the O-O coupling ***,an additional factor to make the condition sufficient is the favorable intermolecular faceto-face interaction for the generation of the pre-reactive[Ru^(Ⅴ)=O…O=Ru^(Ⅴ)],which may be significantly influenced by the secondary coordination *** work provides a new understanding of the structure-activity relationship of water-oxidation catalysts and their potential to adopt I2M pathway for O-O bond formation.

关键词： Water oxidation Oxygen evolution Ruthenium O-O bond formation