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Artificial intelligence and end user tools to develop a nurse duty roster scheduling system
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作者 Franklin Leung Yee-Chun Lau +1 位作者 Martin Law Shih-Kien Djeng 《International Journal of Nursing Sciences》 CSCD 2022年第3期373-377,共5页
Objectives A nurse duty roster is usually prepared monthly in a hospital ward.It is common for nurses to make duty shift requests prior to scheduling.A ward manager normally spends more than a working day to manually ... Objectives A nurse duty roster is usually prepared monthly in a hospital ward.It is common for nurses to make duty shift requests prior to scheduling.A ward manager normally spends more than a working day to manually prepare and subsequently to optimally adjust the schedule upon staff requests and hospital policies.This study aimed to develop an automatic nurse roster scheduling system with the use of open-source operational research tools by taking into account the hospital standards and the constraints from nurses.Methods Artificial intelligence and end user tools operational research tools were used to develop the code for the nurse duty roster scheduling system.To compare with previous research on various heuristics in employee scheduling,the current system was developed on open architecture and adopted with real shift duty requirements in a hospital ward.Results The schedule can be generated within 1 min under both hard and soft constraint optimization.All hard constraints are fulfilled and most nurse soft constraints could be met.Compared with those schedules prepared manually,the computer-generated schedules were more optimally adjusted as real time interaction among nurses and management personnel.The generated schedules were flexible to cope with daily and hourly duty changes by redeploying ward staff in order to maintain safe staffing levels.Conclusions An economical but yet highly efficient and user friendly solution to nurse roster scheduling system has been developed and adopted using open-source operational research methodology.The open-source platform is found to perform satisfactorily in scheduling application.The system can be implemented to different wards in hospitals and be regularly updated with new hospital polices and nurse manpower by hospital information personnel with training in artificial intelligence. 展开更多
关键词 Artificial intelligence COMPUTERS Nurses Nurse duty roster schedule Open source software
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Duty Cycle of a Radiant Ceiling Heating System under Extremely Cold-Temperature Conditions:A Theoretical Assessment
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作者 Mohamed Lateb Hachimi Fellouah 《Journal of Energy and Power Engineering》 2019年第10期359-368,共10页
This work focuses on the estimation of a duty cycle of a radiant ceiling heating system with a panel surface temperature of 35℃and a heat flux of 65 W/m2 that corresponds to a thermal comfort for sedentary occupants.... This work focuses on the estimation of a duty cycle of a radiant ceiling heating system with a panel surface temperature of 35℃and a heat flux of 65 W/m2 that corresponds to a thermal comfort for sedentary occupants.The results obtained are based on the theoretical heat transfer equations that govern the radiant and natural convection heat exchange mechanisms,and experimental heat transfer coefficients available in the literature.The results of the examined radiant heating system with specific conditions showed that a duty cycle of 6.46 min alternated by 13.36 min in shutting-down position is required to assure an acceptable thermal comfort for the enclosure space occupants.In addition,the study showed that for extremely cold-temperature conditions the heating system requires a daily operating load of about 61.2%which clearly proves the efficiency of these radiant heating systems in terms of energy consumption. 展开更多
关键词 Radiant CEILING PANELS natural CONVECTION transfer thermal COMFORT radiant heating systems duty cycle energy consumption.
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Proposal of High Gain, Reduced Stress with Low-Duty-Cycle Two-Input Boost Converter for Renewable Energy Systems
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作者 L. Chitra M. Karpagam K. Saranyadevi 《Circuits and Systems》 2016年第4期489-496,共8页
A two-input boost converter with voltage multiplier cell is proposed in this paper. Then a family of two-input converters with and without voltage multiplier cell are derived and their results are compared to achieve ... A two-input boost converter with voltage multiplier cell is proposed in this paper. Then a family of two-input converters with and without voltage multiplier cell are derived and their results are compared to achieve high voltage gain, low duty cycle, and reduced voltage stress. From the analysis of different topologies, a modified two-input converter with two-stage voltage multiplier cell has good operating characteristics. The switch voltage stress and duty cycle of the modified converter is significantly very less than that of the other converter topologies. The modified DC-DC converter with 50% duty cycle achieves a voltage gain of 10 and the results are verified by using MATLAB/Simulink software. 展开更多
关键词 Voltage Multiplier Cell (VMC) DC-DC Converter Boost Converter SIMULINK Voltage Gain Voltage Stress duty Cycle
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The Impact of Network Topologies and Radio Duty Cycle Mechanisms on the RPL Routing Protocol Power Consumption
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作者 Amal Hkiri Hamzah Faraj +3 位作者 Omar Ben Bahri Mouna Karmani Sami Alqurashi Mohsen Machhout 《Computers, Materials & Continua》 SCIE EI 2024年第5期1835-1854,共20页
The Internet of Things(IoT)has witnessed a significant surge in adoption,particularly through the utilization of Wireless Sensor Networks(WSNs),which comprise small internet-connected devices.These deployments span va... The Internet of Things(IoT)has witnessed a significant surge in adoption,particularly through the utilization of Wireless Sensor Networks(WSNs),which comprise small internet-connected devices.These deployments span various environments and offer a multitude of benefits.However,the widespread use of battery-powered devices introduces challenges due to their limited hardware resources and communication capabilities.In response to this,the Internet Engineering Task Force(IETF)has developed the IPv6 Routing Protocol for Low-power and Lossy Networks(RPL)to address the unique requirements of such networks.Recognizing the critical role of RPL in maintaining high performance,this paper proposes a novel approach to optimizing power consumption.Specifically,it introduces a developed sensor motes topology integrated with a Radio Duty Cycling(RDC)mechanism aimed at minimizing power usage.Through rigorous analysis,the paper evaluates the power efficiency of this approach through several simulations conducted across different network topologies,including random,linear,tree,and elliptical topologies.Additionally,three distinct RDC mechanisms—CXMAC,ContikiMAC,and NullRDC—are investigated to assess their impact on power consumption.The findings of the study,based on a comprehensive and deep analysis of the simulated results,highlight the efficiency of ContikiMAC in power conservation.This research contributes valuable insights into enhancing the energy efficiency of RPL-based IoT networks,ultimately facilitating their widespread deployment and usability in diverse environments. 展开更多
关键词 WSN IoT radio duty cycles TOPOLOGIES
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Modeling the System for Hybrid Renewable Energy Using Highly Efficient Converters and Generator
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作者 Tefera Kitaba 《CES Transactions on Electrical Machines and Systems》 EI CSCD 2024年第3期356-366,共11页
High-efficient isolated DC/DC converters with a high-efficiency synchronous reluctance generator(SRG)are the ultimate solutions in DC microgrid systems.The design and modeling of isolated DC/DC converters with the per... High-efficient isolated DC/DC converters with a high-efficiency synchronous reluctance generator(SRG)are the ultimate solutions in DC microgrid systems.The design and modeling of isolated DC/DC converters with the performance of SRG are carried out.On the generator side,reactive and active powers are used as pulse width modulation(PWM)control variables.Further,the flux estimator is used.Three-phase PWM rectifier is used by applying space vector modulation(SVM)with a constant switching frequency for direct power control.Further,the paper also includes the experimental validation of the results.The paper also proposes that highly efficient power converters and synchronous reluctance generators are required to achieve high performance for hybrid renewable energy systems applications. 展开更多
关键词 DC-DC duty ratio Isolated DTC SRG CONVERTERS
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Nocturnal sentry duty and cardiometabolic characteristics in armed forces personnel
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作者 Yen-Po Lin Yi-Chiung Hsu +4 位作者 Ko-Huan Lin Kun-Zhe Tsai Chen-Chih Chu Yen-Chen Lin Gen-Min Lin 《World Journal of Cardiology》 2024年第12期751-759,共9页
BACKGROUND Sleep deprivation can lead to increased body weight and blood pressure(BP),but the latent effects of partial sleep deprivation related to required night sentry duties within a short-term period on cardiomet... BACKGROUND Sleep deprivation can lead to increased body weight and blood pressure(BP),but the latent effects of partial sleep deprivation related to required night sentry duties within a short-term period on cardiometabolic characteristic changes in military personnel are unclear.AIM To investigate the association between night sentry duty frequency in the past 3 months and cardiometabolic characteristics in armed forces personnel.METHODS A total of 867 armed forces personnel who were aged 18-39 years and did not take any antihypertensive medications in Taiwan in 2020 were included.The frequency of night sentry duty was self-reported via a questionnaire(average number of night sentry shifts per month for the past 3 months).Hemodynamic status was assessed via the resting BP and pulse rate(PR).Cardiometabolic risk factors were defined according to the International Diabetes Federation criteria.Multivariable linear regression analyses of the associations between night sentry duties and PR,BP,and other metabolic syndrome(MetS)marker levels were performed,with adjustments for age,sex,substance use,body mass index and aerobic fitness.Multiple logistic regression analysis was carried out to determine the associations between night sentry duties and the prevalence of each MetS feature. 展开更多
关键词 Armed forces personnel Cardio-metabolic characteristics Night sentry duty Partial sleep deprivation
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浅析学生对精读课前“Duty Report”的抗拒心理 被引量:2
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作者 乔春华 《重庆三峡学院学报》 2007年第6期120-122,共3页
学生在精读课堂常常表现出沉默、被动,教师试图在课前增加"Duty Report"环节活跃课堂气氛,但是部分学生对"Duty Report"产生了抗拒心理。笔者通过课堂观察、问卷、访谈等方式,从学生、教师和教学环境着手,分析学生... 学生在精读课堂常常表现出沉默、被动,教师试图在课前增加"Duty Report"环节活跃课堂气氛,但是部分学生对"Duty Report"产生了抗拒心理。笔者通过课堂观察、问卷、访谈等方式,从学生、教师和教学环境着手,分析学生抗拒心理形成原因并力求找到相关对策。 展开更多
关键词 duty REPORT 沉默 抗拒 对策
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Duty Report对普通高校新生SLA作用的研究
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作者 柯静 曾祥发 《中国科技信息》 2012年第13期201-202,共2页
普通高等学校大学新生在陌生的学习环境下,二语习得(SLA)面临着很多困难。在建构主义理论的指导下,在大学英语教学中充分利用Duty Report形式,降低新生二语习得的焦虑、培养正确二语习得动机、建立良好的师生心理契约关系、改善二语习环... 普通高等学校大学新生在陌生的学习环境下,二语习得(SLA)面临着很多困难。在建构主义理论的指导下,在大学英语教学中充分利用Duty Report形式,降低新生二语习得的焦虑、培养正确二语习得动机、建立良好的师生心理契约关系、改善二语习环境,为以后的二语习得打下扎实的基础。 展开更多
关键词 duty REPORT 普通高校 新生 二语习得 影响
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Duty Report在高职电子商务英语课堂教学中的运用
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作者 杨兵 《文教资料》 2020年第9期220-221,231,共3页
Duty Report,即课堂上的值日生报告,是广大英语教师在课前喜欢使用的教学方法。高职电子商务英语课程是高职电子商务专业的一门专业课程,有一定的难度。在电子商务英语课堂上,如何科学、合理利用"课前五分钟"的Duty Report,... Duty Report,即课堂上的值日生报告,是广大英语教师在课前喜欢使用的教学方法。高职电子商务英语课程是高职电子商务专业的一门专业课程,有一定的难度。在电子商务英语课堂上,如何科学、合理利用"课前五分钟"的Duty Report,缓解电子商务专业学生英语学习压力、了解商务背景知识、巩固英语语法及专业词汇,本文进行了一定的探析。 展开更多
关键词 duty Report 高职电子商务英语 课堂教学
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Value Choice and System Enlightenment of the U.S.Business Judgment Rule
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作者 王珉 《海外英语》 2012年第5X期286-288,共3页
Through analyzing theories and legislative cases in respect of Business Judgment Rule in American justice systems with the com parison method,this article reveals that the business judgment system is conducive to the ... Through analyzing theories and legislative cases in respect of Business Judgment Rule in American justice systems with the com parison method,this article reveals that the business judgment system is conducive to the protection of rights and interests of the directors in decision making,and enables the court to avoid the substantive review on business management in an effective manner;at the same time,in view of the blanks and deficiencies in the legislation of China in the "Company Law" and other relevant laws,it is recommended that the Business Judgment Rule be introduced into China and the legislation in respect of director accountability be strengthened,while the direc tors fiduciary duty and other supporting systems be improved,with the reference of the U.S.practice,to clarify the legal boundary between rights and responsibilities of directors. 展开更多
关键词 Business JUDGMENT Directors duty of CARE
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“Duty Report”在高职商务英语精读课堂教学中的探析
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作者 杨兵 《海外英语》 2013年第13期79-81,共3页
"Duty Report",也就是值日生报告,是大学精读课上教师比较爱使用的教学法。高职商务英语精读课程是高职商务英语专业的一门基础核心课程,在课堂开始前五至十分钟之内导入"Duty Report"十分必要。然而,高职商务英语... "Duty Report",也就是值日生报告,是大学精读课上教师比较爱使用的教学法。高职商务英语精读课程是高职商务英语专业的一门基础核心课程,在课堂开始前五至十分钟之内导入"Duty Report"十分必要。然而,高职商务英语专业学生英语基础相对不牢,商务背景知识欠缺。如何在高职商务英语精读课堂上有效组织"Duty Report"提高高职学生学习本门课程的兴趣?如何克服学生在课堂上克服部分学生对"Duty Report"的抗拒心理?这两个方面很值得做一定的探析。 展开更多
关键词 duty Report” 高职 商务英语精读 探析
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“Duty Report”在体育院校英语课堂教学中的探析
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作者 曹现芳 《海外英语》 2014年第5X期93-95,共3页
"Duty Report"是教师交际教学思想的应用和实践,在英语教学中起了重要作用,同时也为学生们搭建了一个促进交流、分享知识、提高自我的学习平台。体育院校学生英语基础相对比较薄弱,如何使之高效地运用于英语课堂教学,切实提... "Duty Report"是教师交际教学思想的应用和实践,在英语教学中起了重要作用,同时也为学生们搭建了一个促进交流、分享知识、提高自我的学习平台。体育院校学生英语基础相对比较薄弱,如何使之高效地运用于英语课堂教学,切实提高体育院校学生学习兴趣和英语水平,需要通过教师的引导和学生的反馈以及结合体育院校的实际,挖掘"Duty Report"应用于英语课堂教学的价值,探讨适合体育院校英语课堂教学的"Duty Report"实施策略和实效机制。 展开更多
关键词 duty Report” 体育院校 英语课堂教学 探析
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“Duty Report”在高职英语课堂教学中的应用 被引量:1
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作者 张荣华 《漯河职业技术学院学报》 2012年第3期24-25,共2页
"Duty Report"是一种有效的训练学生口语的方法,但是有相当数量的老师会回避它,为什么呢?是"Duty Report"在它的形式设置以及内容上出了问题。该如何发挥"Duty Report"的积极作用呢?
关键词 duty Report” 高职英语 交际教学
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建构旨在提高高职学生英语综合能力的任务驱动型“Duty Report” 被引量:4
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作者 贺延情 张岳琢 《知识经济》 2010年第19期139-140,共2页
在传统英语教学中,让高职学生在英语课堂上被动接受"Duty Report"(值日报告),一般很难达到提高学生英语综合能力的目的,甚至于部分学生对"值日报告"的形式产生了抗拒心理,反而不利于英语的实际教学。笔者通过课堂... 在传统英语教学中,让高职学生在英语课堂上被动接受"Duty Report"(值日报告),一般很难达到提高学生英语综合能力的目的,甚至于部分学生对"值日报告"的形式产生了抗拒心理,反而不利于英语的实际教学。笔者通过课堂实践、走访学生和深入思考,尝试着对"值日报告"形式创新教学,构建以任务驱动型"Duty Report",力求把"值日报告"培育成提高学生英语综合能力的平台。 展开更多
关键词 duty REPORT 高职英语 任务驱动教学法 综合能力
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An Adjust Duty Cycle Method for Optimized Congestion Avoidance and Reducing Delay for WSNs 被引量:3
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作者 Ting Xu Ming Zhao +1 位作者 Xin Yao Kun He 《Computers, Materials & Continua》 SCIE EI 2020年第11期1605-1624,共20页
With the expansion of the application range and network scale of wireless sensor networks in recent years,WSNs often generate data surges and delay queues during the transmission process,causing network paralysis,even... With the expansion of the application range and network scale of wireless sensor networks in recent years,WSNs often generate data surges and delay queues during the transmission process,causing network paralysis,even resulting in local or global congestion.In this paper,a dynamically Adjusted Duty Cycle for Optimized Congestion based on a real-time Queue Length(ADCOC)scheme is proposed.In order to improve the resource utilization rate of network nodes,we carried out optimization analysis based on the theory and applied it to the adjustment of the node’s duty cycle strategy.Using this strategy to ensure that the network lifetime remains the same,can minimize system delay and maximize energy efficiency.Firstly,the problems of the existing RED algorithm are analyzed.We introduce the improved SIG-RED algorithm into the ADCOC mechanism.As the data traffic changes,the RED protocol cannot automatically adjust the duty cycle.A scheduler is added to the buffer area manager,referring to a weighted index of network congestion,which can quickly determine the status of network congestion.The value of the weighting coefficient W is adjusted by the Bayesian method.The scheduler preferably transmits severely urgent data,alleviating the memory load.Then we combined improved data fusion technology and information gain methods to adjust the duty cycle dynamically.By simulating the algorithm,it shows that it has faster convergence speed and smaller queue jitter.Finally,we combine the adjusted congestion weight and the duty cycle growth value to adjust the data processing rate capability in the real-time network by dynamically adjusting it to adapt to bursts of data streams.Thus,the frequency of congestion is reduced to ensure that the system has higher processing efficiency and good adaptability. 展开更多
关键词 duty cycle CONGESTION data fusion network lifetime DELAY WEIGHT data processing capability
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Flow Control over a Conical Forebody by Duty-Cycle Actuations 被引量:2
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作者 ZHENG Borui GAO Chao +2 位作者 LI Yibin LIU Feng LUO Shijun 《Plasma Science and Technology》 SCIE EI CAS CSCD 2012年第1期58-63,共6页
Duty-cycle modulation alternately blowing from two opposite-facing plasma actu- ators on the leeward surface near the apex of a cone with a 10° semi-apex angle is adopted to control mean lateral force and moment,... Duty-cycle modulation alternately blowing from two opposite-facing plasma actu- ators on the leeward surface near the apex of a cone with a 10° semi-apex angle is adopted to control mean lateral force and moment, and the flow control mechanisms are presented. Pressure distributions over the forebody of the cone are measured by steady pressure tappings. The experiments are performed in a 3.0×1.6 m open-circuit wind tunnel at a wind speed of 20 m/s, a 45° angle of attack and a Reynolds number of 2×10^5, based on the diameter of the base of the cone. Almost linearly proportional control of the lateral forces and moments over a slender conical forebody at a high angle of attack has been demonstrated by employing a pair of single dielectric barrier discharge plasma actuators near the apex of the cone, combined with a duty-cycle tech- nique. The pressure distribution measurements indicate that the hi-stable vortex pattern appears to be shifted in the opposite direction when the port or starboard actuator is activated, while the other is kept off during the test. It is shown that the reduced pulse-repetition frequency based on the local diameter at the plasma actuator equal to one yields the highest effectiveness among the cases considered. 展开更多
关键词 conical forebody plasma actuator flow control duty cycle
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Duty Report在大学英语教学中的运用 被引量:1
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作者 秦岩 《中国校外教育》 2010年第6期98-99,共2页
本文讨论了Duty Report作为一种开课形式在大学英语教学中的独特作用;结合教学实践,重点阐述了此种形式在具体应用中应注意的几个问题及如何将这种形式更好地贯穿于大学英语课堂教学中。
关键词 duty REPORT 英语课堂教学 听说能力 言语交际能力
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建构旨在提高高职学生英语综合能力的任务驱动型“Duty Report” 被引量:1
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作者 贺延情 张岳琢 《陕西交通职业技术学院学报》 2011年第1期49-52,共4页
在传统英语教学中,让高职学生在英语课堂上被动接受“Duty Report”(值日报告),一般很难达到提高学生英语综合能力的目的,甚至于部分学生对“值日报告”的形式产生了抗拒心理,反而不利于英语的实际教学。通过课堂实践、走访学生... 在传统英语教学中,让高职学生在英语课堂上被动接受“Duty Report”(值日报告),一般很难达到提高学生英语综合能力的目的,甚至于部分学生对“值日报告”的形式产生了抗拒心理,反而不利于英语的实际教学。通过课堂实践、走访学生和深入思考,尝试对“值日报告”形式创新教学,构建任务驱动型“Duty Report”,力求把“值日报告”培育成提高学生英语综合能力的平台。 展开更多
关键词 duty REPORT 高职英语 任务驱动教学法 综合能力
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Mitigation of EDFA transient effects in variable duty cycle pulsed signals 被引量:1
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作者 D. Meena K.T. Sarath +2 位作者 Fredy Francis E. Dipin T. Srinivas 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2019年第3期276-281,共6页
We report the transient effects in Erbium Doped Fiber Amplifier (EDFA) systems for pulsed signals with different duty-cycles. The work includes the analysis using three different duty-cycles, 10%, 20% and 50%. A curve... We report the transient effects in Erbium Doped Fiber Amplifier (EDFA) systems for pulsed signals with different duty-cycles. The work includes the analysis using three different duty-cycles, 10%, 20% and 50%. A curve fitting technique is also proposed to predict the transients of any lesser duty-cycled pulse, once the transients of a larger duty-cycled pulse is known. Mathematical evaluation confirms the double exponential shape of transient distorted signal. Further, EDFA transient effect is experimentally verified on a Wavelength Division Multiplexed (WDM) link by multiplexing high and low bitrate modulated optical signals. We conclude the paper by proposing a transient suppression technique for variable dutycycle signals and analyzing its effectiveness with different wavelength spacing. 展开更多
关键词 EDFA Transients WDM VARIABLE duty cycle Suppression
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An Eco-Route Planner for Heavy Duty Vehicles 被引量:2
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作者 Maria Pia Fanti Agostino Marcello Mangini +1 位作者 Alfredo Favenza Gianvito Difilippo 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2021年第1期37-51,共15页
Driving style,traffic and weather conditions have a significant impact on vehicle fuel consumption and in particular,the road freight traffic significantly contributes to the CO2 increase in atmosphere.This paper prop... Driving style,traffic and weather conditions have a significant impact on vehicle fuel consumption and in particular,the road freight traffic significantly contributes to the CO2 increase in atmosphere.This paper proposes an Eco-Route Planner devoted to determine and communicate to the drivers of Heavy-Duty Vehicles(HDVs)the eco-route that guarantees the minimum fuel consumption by respecting the travel time established by the freight companies.The proposed eco-route is the optimal route from origin to destination and includes the optimized speed and gear profiles.To this aim,the Cloud Computing System architecture is composed of two main components:the Data Management System that collects,fuses and integrates the raw external sources data and the Cloud Optimizer that builds the route network,selects the eco-route and determines the optimal speed and gear profiles.Finally,a real case study is discussed by showing the benefit of the proposed Eco-Route planner. 展开更多
关键词 PROFILE An Eco-Route Planner for Heavy duty Vehicles
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