Performance Evaluation and Environmental Analysis of an Electrically Assisted Bicycle Under Real Driving Conditions

2014 ◽  
Author(s):  
Paolo Iodice ◽  
Carmelina Abagnale ◽  
Massimo Cardone ◽  
Salvatore Strano ◽  
Mario Terzo ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Environmental Impact ◽  
Environmental Analysis ◽  
Real Life ◽  
Driving Behavior ◽  
Performance Study ◽  
Kinematic Parameters ◽  
Test Program ◽  
Electrically Assisted ◽  
Electric Traction

This paper describes the on-road test program that was used for a performance study and environmental analysis of an electrically assisted bicycle in the urban area of Naples. For this purpose, the vehicle was tested on different test tracks, cycling over 2000 km, and then making a general assessment about the driving behavior under real conditions. Based on the findings obtained during the different test samples, an appraisal of the electric traction offered by this bicycle on the driving comfort was evaluated for different conditions: electrical assistance at start, on a flat road and when riding uphill. The power requirements in different typical riding situations were also calculated: these results were estimated by experimental kinematic parameters that describe the driving dynamics collected during the real-life applications. An environmental analysis was made and also put against the environmental impact of a thermal moped.

scholarly journals Comprehensive Performance Evaluation of Green Infrastructure Practices for Urban Watersheds Using an Engineering–Environmental–Economic (3E) Model

2021 ◽  
Vol 13 (9) ◽  
pp. 4678
Author(s):  
Yi-Jia Xing ◽  
Tse-Lun Chen ◽  
Meng-Yao Gao ◽  
Si-Lu Pei ◽  
Wei-Bin Pan ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Environmental Economic ◽  
Environmental Impact ◽  
Pollution Control ◽  
Green Infrastructure ◽  
Stormwater Management ◽  
Economic Cost ◽  
Urban Watersheds ◽  
Comprehensive Performance ◽  
Detention Basins

Green infrastructure practices could provide innovative solutions for on-site stormwater management and runoff pollution control, which could relieve the stress of nonpoint pollution resulting from heavy rainfall events. In this study, the performance and cost-effectiveness of six green infrastructure practices, namely, green roofs, rain gardens, pervious surfaces, swales, detention basins, and constructed wetlands, were investigated. The comprehensive performance evaluation in terms of the engineering performance, environmental impact, and economic cost was determined in the proposed engineering–environmental–economic (3E) triangle model. The results revealed that these green infrastructure practices were effective for stormwater management in terms of runoff attenuation, peak flow reduction and delay, and pollutant attenuation. It was suggested that for pollution control, detention basins can efficiently reduce the total suspended solids, total nitrogen, total phosphorus, and lead. The implementation of detention basins is highly recommended due to their higher engineering performance and lower environmental impact and economic cost. A case study of a preliminary cost–benefit analysis of green infrastructure practice exemplified by the Pearl River Delta in China was addressed. It suggested that green infrastructure was cost-effective in stormwater management in this area, which would be helpful for sustaining healthy urban watersheds.

scholarly journals METRICS FOR PERFORMANCE EVALUATION OF SAFETY APPLICATIONS IN VEHICULAR AD HOC NETWORKS

Transport ◽  
2008 ◽  
Vol 23 (4) ◽  
pp. 291-298 ◽  
Author(s):  
Saleh Yousefi ◽  
Mahmood Fathy
Keyword(s):  
Performance Evaluation ◽  
Ad Hoc Network ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Road Traffic ◽  
Real Life ◽  
Message Exchange ◽  
To Come ◽  
Hoc Networks ◽  
Safety Applications

In the recent years, direct message exchange between vehicles in order to improve the safety of road traffic has been attracting lots of interest in both networking and road safety communities. While travelling on a road, vehicles form an ad hoc network called Vehicular Ad hoc NETwork (VANET) and deploy life safety applications. Evaluating the performance of these applications is primordial for realizing VANETs in real life. Current literature lacks efficient ways to evaluate the performance of safety applications and mostly leverages on classical networking metrics like delay, delivery rate etc. In this paper, we consider both networking and safety concerns simultaneously to come up with more efficient methods. In particular, we first point out the significance of fairness and coverage from safety viewpoint. Then, we introduce two new metrics called beaconing rate and effective range aiming at providing more facilities for safety performance evaluation in VANET s research. Furthermore, realizing special characteristics of safety applications while disseminating beacon messages, we study the way that beacon dissemination protocols affect the performance of safety applications. We then conduct extensive simulation study to show the usefulness of the introduced metrics and derive some insights on the feasibility of driver‐assistant safety applications. Our evaluation also shows that sending the aggregated status of neighbouring vehicles in addition to vehicle's own status, and instead, increasing beacon transmission interval may be invoked in order to assist safety applications in providing satisfactory services to drivers.

scholarly journals Clinical diagnostic performance evaluation of five immunoassays for antibodies to SARS-CoV-2 diagnosis in a real-life routine care setting

2021 ◽  
Vol 39 ◽  
Author(s):  
Adamu Ishaku Akyala ◽  
Jaggu Ruth Awayimbo ◽  
Anowai Clementina Ogo ◽  
Ndubuisi John Chima ◽  
Olusoji Mathew Adeyemi Billyrose ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Diagnostic Performance ◽  
Care Setting ◽  
Real Life ◽  
Routine Care ◽  
Clinical Diagnostic

Object Oriented Dexterity Analysis and Design Application for Spatial Robot Hands

1989 ◽  
Author(s):  
L. Lu ◽  
C. Cai ◽  
A. H. Soni
Keyword(s):  
Performance Evaluation ◽  
Object Oriented ◽  
Kinematic Parameter ◽  
Least Square ◽  
Parameter Determination ◽  
Robot Hand ◽  
Kinematic Parameters ◽  
Analysis And Design ◽  
Robot Hands

Abstract For an arbitrarily shaped object manipulated by a robot hand, this paper presents a procedure for analyzing the position and rotation ranges of the object, and a procedure for designing the kinematic parameters of a hand to meet given requirements on the motion ranges. Rotation dexterity index, dexterity charts, and a dexterity scalar characterizing both position range and rotation range are introduced for the performance evaluation of a robot hand. Least-square-error iteration and steps are detailed for the kinematic parameter determination of a robot hand.

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