When the power chassis of general forest machinery is working on uneven terrains, insufficient due to poor traction between wheels and road surface, which affects driving operation entire vehicle. According principle multiple-degree-of-freedom profiling, a novel articulated for forestry was designed. The innovative structure realizes active pitching, deflection, passive torsion in front rear fr...

In this paper, bispectral analysis of vibration signals is used to assess health conditions of different rotatingcomponents in an AH-64D helicopter tail rotor drive train. First, cross-bispectral analysis is used to investigate drive-shaft faulted conditions -namely misalignment, imbalance, and a combination of misalignment and imbalance -with respect to a baseline case. The magnitude of the cr...

This work attempts to enhance telepresence by empowering nonverbal communication i.e. head gestures communication with an implementation of a robotic rear-projection head device. The feature of this implementation which is considered to be novel is the containment of all the necessary components for rear-head projection within the volume of a typical human head. This provides a natural look to ...

Rear-end collisions are one of the most frequent crash types in the U.S. Pre-Collision System (PCS) have been developed to mitigate the frequency and severity of rear-end collisions. The potential effectiveness of these systems, however, depends on the driver’s state and their attempted avoidance maneuvers. This study utilized the National Motor Vehicle Crash Causation Survey (NMVCCS), a unique...

PURPOSE Rear-end crashes attribute to a large portion of total crashes in China, which lead to many casualties and property damage, especially when involving commercial vehicles. This paper aims to investigate the critical factors for occupant injury severity in the specific rear-end crash type involving trucks as the front vehicle (FV). METHODS This paper investigated crashes occurred from 2...

As part of NHTSA’s Rear Seat Occupant Protection Research Program, the Fatality Analysis Reporting System (FARS) and State Data System (SDS) for Florida, Pennsylvania and Maryland were utilized to estimate relative fatality rates and injury risk ratios between the front and rear seat passengers. In addition, a parametric study of rear-seat restraint parameters was performed to assess chest defl...

The purpose of this study was to investigate the influence of shaft stiffness on grip and clubhead kinematics. Two driver shafts with disparate levels of stiffness, but very similar inertial properties, were tested by 33 golfers representing a range of abilities. Shaft deflection data as well as grip and clubhead kinematics were collected from 14 swings, with each shaft, for each golfer using a...

Whiplash injury resulting from rear impact is a significant issue in terms of societal cost, and the resulting pain and reduction in quality of life. The facet joints in the cervical spine have been identified as a source of pain in whiplash injuries; however, the responses of these joints are difficult to measure in vivo or in vitro. In this study, a detailed explicit FE model of the cervical ...

Key findings The results show that 77.4% of respondents rear an average of 2.97 livestock unit (LSU) per household. More than half of respondents who rear livestock (53.82%) dump livestock carcasses in the open fields. Ethnicity, age, education status, gender, livestock unit and involvement in conservation activities are the most significant predictors for the positive attitudes towards vulture...