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Adjusting Sink Location to Reduce End-to-End Delay in Low-Duty-Cycle Wireless Sensor Networks

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Journal of Electronic Science and Technology 2015年第1期13卷 20-26页

作者： Yu-Yuan Lin Kuo-Feng Ssu Hau-Yu chiang Institute of Computer and Communication Engineering National Cheng Kung University Department of Electrical Engineering National Cheng Kung University Data Systems Consulting Co. Ltd

Low-duty-cycle mechanisms can reduce the energy consumption significantly in wireless sensor networks（WSNs）. Sensors stay dormant most of the time to save their energy and wake up based on their needs. However, such a technique, while prolonging the network lifetime, sets excessive challenges for reducing the end-to-end（E2E） delay within the network. In this paper, the centralized cluster-based location finding（CCLF） algorithm is proposed to reduce the high latency in low-duty-cycle WSNs by finding a suitable position for the sink. The algorithm is mainly composed of three steps： a） the cluster construction, b） the fast look-up table（FLU-table） construction, and c） the sink location decision. The simulation results show that the performance of the CCLF algorithm is significantly similar to that of the optimal algorithm. Moreover, the CCLF algorithm requires less operation time compared with the optimal algorithm.

关键词： Duty cycle latency sink wireless sensor networks

Hybrid Silicon-Carbon Nanostructured Composites as Superior Anodes for Lithium Ion Batteries

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Nano Research 2011年第3期4卷 290-296页

作者： Po-chiang Chen Jing Xu Haitian Chen Chongwu Zhou Mork Family Department of Chemical Engineering and Materials Science University of Southern Califomia Los Angeles CA 90089 USA ming-Hsieh Department of Electrical Engineering University of Southern California Los Angeles CA 90089 USA

We have successfully fabricated a hybrid silicon-carbon nanostructured composite with large area （about 25.5 in^2） in a simple fashion using a conventional sputtering system. When used as the anode in lithium ion batteries, the uniformly deposited amorphous silicon （a-Si） works as the active material to store electrical energy, and the pre-coated carbon nanofibers （CNFs） serve as both the electron conducting pathway and a strain/stress relaxation layer for the sputtered a-Si layers during the intercalation process of lithium ions. As a result, the as-fabricated lithium ion batteries, with deposited a-Si thicknesses of 200 nm or 300 nm, not only exhibit a high specific capacity of 〉2000 mA.h/g, but also show a good capacity retention of over 80% and Coulombic efficiency of 〉98% after a large number of charge/discharge experiments. Our approach offers an efficient and scalable method to obtain silicon-carbon nanostructured composites for application in lithium ion batteries.

关键词： Amorphous silicon carbon nanofibers lithium ion batteries hybrid nanostructured composite

Theoretical insights on alleviating lattice-oxygen evolution by sulfur substitution in Li_(1.2)Ni_(0.6)Mn_(0.2)O_(2) cathode material

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npj Computational Materials 2022年第1期8卷 2027-2036页

作者： Kuan-Yu Lin Santhanamoorthi Nachimuthu Han-Wen Huang Jyh-chiang Jiang Department of Chemical Engineering National Taiwan University of Science and TechnologyTaipeiTaiwanChina

Here,we demonstrate that the lattice oxygen release on the high-capacity cathode,Li_(1.2)Ni_(0.6)Mn_(0.2)O_(2)(LNMO)surface can be successfully suppressed through S-anion-substitution using density functional theory(DFT)calculations and ab initio molecular dynamics(AIMD)*** oxygen evolution mechanisms on pristine and sulfur(S)-substituted LNMO(003)surfaces in the presence of an electrolyte mixture are ***-oxidation of O^(2−)anions during delithiation in the pristine surface results in oxygen evolution and subsequent structural ***,in the S-substituted LNMO,S^(2−)anions primarily participate in charge compensation and further inhibit oxygen evolution and O vacancy formation at high degrees of ***,the S-substitution effectively prevents the formation of Ni^(3+)ions and Jahn-Teller distortion,retaining the layered structure during *** findings provide insight into improving the structural stability of the LNMO(003)surface,paving the way for developing Li-rich LNMO cathode materials for next-generation LIBs.

关键词： substitution sulfur insight

Screening of intraocular pressure before routine pupil dilation for retinal photography: Clinical case report

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Family Medicine and Community Health 2016年第4期4卷 77-79页

作者： Lap-kin chiang Family Medicine and General Outpatient Department Kwong Wah HospitalHospital AuthorityHong KongChina

Introduction:Pharmacologic dilation of the pupil results in twice the sensitivity of detection of diabetic retinopathy compared with undilated retinal *** potential risk of acute angle-closure glaucoma after pupil dilation has been hypothesized to be higher in Asian patients with diabetes *** case:A 61-year-old man with diabetes mellitus and hypertension was incidentally found to have elevated intraocular pressure(IOP)before routine retinal *** was asymptomatic and the visual acuity was 0.67 for both *** ophthalmologist later found he had anatomical narrow-angle borderline *** administration of pilocarpine and oral administration of acetazolamide were initiated,and laser iridotomy was later *** screening:Among 1736 diabetic and/or hypertensive patients who underwent IOP screen-ing,31 patients(1.8%)had IOP of any eye persistently higher than 21 mm Hg on at least two *** mean(standard deviation)IOP of the right eye was 24.1(2.1)mm Hg,while that of the left eye was 24.6(2.5)mm *** patients(12.9%)were found to have glaucoma,and treatment was initiated by an *** further study should be conducted to evaluate the cost-effectiveness of IOP screening among this group of patients.

关键词： Glaucoma intraocular pressure screening

An overview on the chemistry, pharmacology and anticancer properties of tetrandrine and fangchinoline(alkaloids) from Stephania tetrandra roots

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Journal of Integrative Medicine 2021年第4期19卷 311-316页

作者： Eric Wei chiang Chan Siu Kuin Wong Hung Tuck Chan Faculty of Applied Sciences UCSI UniversityKuala Lumpur 56000Malaysia School of Foundation Studies Xiamen University MalaysiaSelangor 43900Malaysia Secretariat of the International Society for Mangrove Ecosystems(ISME) Faculty of AgricultureUniversity of the RyukyusOkinawa 903-0129Japan

Tetrandrine(TET) and fangchinoline(FAN) are dominant bisbenzylisoquinoline(BBIQ) alkaloids from the roots of Stephania tetrandra of the family Menispermaceae. BBIQ alkaloids comprise two benzylisoquinoline units linked by oxygen bridges. The molecular structures of TET and FAN are exactly the same, except that TET has a methoxy(-OCH3) group, while FAN has a hydroxyl(-OH) group at C7. In this overview,the current knowledge on the chemistry, pharmacology and anticancer properties of TET and FAN have been updated. The focus is on colon and breast cancer cells, because they are most susceptible to TET and FAN, respectively. Against colon cancer cells, TET inhibits cell proliferation and tumor growth by inducing apoptosis and G1 cell cycle arrest, and suppresses adhesion, migration and invasion of *** breast cancer cells, FAN inhibits cell proliferation by inducing apoptosis, G1-phase cell cycle arrest and inhibits cell migration. The processes involve various molecular mechanisms and signaling pathways. Some insights on the ability of TET and FAN to reverse multi-drug resistance in cancer cells and suggestions for future research are provided.

关键词： Tetrandrine Fangchinoline Alkaloids Pharmacology Anticancer Multi-drug resistance

Estimating Users’ Intentions and Behaviours of Electronic Bidding System

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Estimating Users’ Intentions and Behaviours of Electronic B...

The gut's feeling on bile acid signaling in NAFLD

第25届中国控制与决策会议

作者： Jian Chen Ziping chiang Department of Logistics and Technique Management University of Kang Ning

ISBN: (纸本)9781467355339

Electronic Bidding System （EBS） is one of the most important operational solutions of public administration, as well as the establishment of the conditions necessary for taking advantage of electronic administration. But few papers discussed the users’ aesthesis in using Electronic Bidding System for the feedback control. Thus the main purpose of this paper is to investigate the current status and the factors of the users’ intentions and behaviors in using Electronic Bidding System. The judgment framework is Structural Equation Modeling （SEM） based on the Unified Theory of Acceptance and Use of Technology Model （UTAUT） to research the influence of the four factors, Performance Expectancy, Effort Expectancy, Social Influence, and Facilitating Conditions on the intentions and behaviors. A questionnaire survey is conducted to collect 192 valid samples for quantitative analysis. The sample number in Tainan Taiwan is 102 and the others are from Nanping Fujian. The results are shown as following. （1）. Performance Expectancy and Social Influence have a significantly impact on the users’ intentions and behaviors in using Electronic Bidding System, but not in Effort Expectancy. （2）. Facilitating Conditions have a significantly impact on the users’ behaviors in using Electronic Bidding System, but in use Intention. （3）. The difference between samples from Tainan Taiwan mad Nanping Fujian are significant in 5 of 9 factors.

关键词： Electronic Bidding System, Users’ Aesthesis Structural Equation Modeling, Unified Theory of Acceptance and Use of Technology Model, Feedback Control

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Hepatobiliary Surgery and Nutrition 2018年第2期7卷 151-153页

作者： John Y.L.chiang Department of Integrative Medical Sciences College of MedicineNortheast Ohio Medical UniversityRootstownOHUSA

The gut to live axis plays a critical role in regulation of hepatic bile acid synthesis and metabolic homeostasis(1).Non-alcoholic fatty liver disease(NAFLD)is the most common chronic liver disease with a high prevalence of^35%in *** can progress from simple steatosis to non-alcoholic steatohepatitis(NASH),cirrhosis and hepatocellular *** is associated with insulin resistance,obesity and type 2 *** acid-activated farnesoid X receptor(FXR)and G protein-coupled bile acid receptor-1(Gpbar-1,aka TGR5)have been shown to regulate lipid,glucose and energy metabolism and activation of FXR by agonists have been shown to improve hepatic metabolism and metabolic disorder in several mouse models of NASH(2).However,the role of bile acid signaling in pathogenesis and treatment of NASH is not clear.

关键词： NAFLD metabolism bile

Review:Acute lung injury/acute respiratory distress syndrome (ALI/ARDS): the mechanism,present strategies and future perspectives of therapies

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2007年第1期8卷 60-69页

作者： LUH Shi-ping chiang Chi-huei Department of Surgery Chung-Shan Medical University Hospital 402 Taichung Taiwan China Division of Pulmonary Immunology and Infectious Diseases Taipei Veterans General Hospital 112 Taipei Taiwan China

Acute lung injury/acute respiratory distress syndrome （ALI/ARDS）, which manifests as non-cardiogcnic pulmonary edema, respiratory distress and hypoxemia, could be resulted from various processes that directly or indirectly injure the lung. Extensive investigations in experimental models and humans with ALI/ARDS have revealed many molecular mechanisms that offer therapeutic opportunities for cell or gene therapy. Herein the present strategies and future perspectives of the treatment for ALI/ARDS, include the ventilatory, pharmacological, as well as cell therapies.

关键词： Acute lung injury Acute respiratory distress syndrome Ventilator Cell therapy

Bile acid metabolism and signaling in liver disease and therapy

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Liver Research 2017年第1期1卷 3-9页

作者： John Y.L.chiang Department of Integrative Medical Sciences College of MedicineNortheast Ohio Medical UniversityRootstownOHUSA

Bile acids play a critical role in the regulation of glucose,lipid,and energy metabolism through activation of the nuclear bile acid receptor farnesoid X receptor(FXR)and membrane G protein-coupled bile acid receptor-1(Gpbar-1,aka TGR5).Agonist activation of FXR and TGR5 improves insulin and glucose sensitivity and stimulates energy metabolism to prevent diabetes,obesity,and non-alcoholic fatty liver disease(NAFLD).Bile acids have both pro-and anti-inflammatory actions through FXR and TGR5 in the intestine and *** the intestine,bile acids activate FXR and TGR5 to stimulate fibroblast growth factor 15 and glucagon-like peptide-1 *** and TGR5 agonists may have therapeutic potential for treating liver-related metabolic diseases,such as diabetes and NAFLD.

关键词： Bile acid metabolism Cholestatic liver diseases Metabolic diseases