OBJECTIVE The aim of this study was to assess sensitivity and specificity of surrogate physical ability tests as predictors of criterion firefighting task performance and to identify corresponding minimum muscular strength and endurance standards. METHODS Fifty-one (26 male; 25 female) participants completed three criterion tasks (ladder lift, ladder lower, ladder extension) and three corresp...

Motion measurements obtained from a maneuvering 1/16-scale dragline excavation system using a six camera motion capture system are compared against motion predictions of the same scenario using a complex dragline excavation system simulation. The dynamic model includes motion of the bucket, spreader bar, hoist cluster, and drag cluster, along with flexible rope and chain segments including the ...

[1] The comment by Feng et al. [2010] suggests that the semi‐automated algorithm developed by Cartwright and Moldwin [2008] is not always a reliable method of identifying flux ropes and that the duration distribution of flux ropes in the solar wind is not bimodal. The semi‐automated method was developed in an attempt to remove the subjective nature of visual flux rope identification by using qu...

background: physical exercises can influence some anthropometric and fitness components differently. the aim of present study was to evaluate how a relatively long‑term training program in 11‑14‑year‑old male iranian students affects their anthropometric and motor performance measures. methods: measurements were conducted on the anthropometric and fitness components of participants (n = 28) pri...

The suicide act of self-strangulation must be distinguished from homicide, which needs objective scene investigation, autopsy and anamnesis in order to elucidate the manner of death. A 54-year-old man was found dead in public hospital small mosque. There was one nylon rope around his neck, tied together with a knot in the front, under the chin, and rope continuing tightly to right ankle support...

Permanent magnet linear synchronous motor (PMLSM) for rope-less hoist system, which has the advantages of simple structure, small volume, high force, unlimited hoisting height and speed, is a research focus and difficulties in the vertical hoist field. In this paper, according to the key technical problems of PMLSM for rope-less hoist system, a design scheme of direct driving high-speed elevato...

We examined interplanetary magnetic field disturbances recorded at the NEARShoemaker spacecraft when it was above either the east or west solar limb as seen from Earth, and then we identified the associated coronal mass ejections (CMEs) detected above the limbs by the SOHO/LASCO coronagraph. We found 10 cases where a nonrecurring IP disturbance could be associated with a CME. Eight of the distu...

The nonlinear vibration of a flexible hoisting rope with time-varying length and axial velocity is investigated. The flexible hoisting rope is modeled as a taut translating string with a rigid body attached at its low end. A systematic procedure for deriving the system model of a flexible hoisting rope with time-varying length and axial velocity is presented. The governing equations were develo...

Within the framework of the cubic honeycomb (cubic tessellation) of Euclidean 3-space, we define a quantum system whose states, called quantum knots, represent a closed knotted piece of rope, i.e., represent the particular spatial configuration of a knot tied in a rope in 3-space. This quantum system, called a quantum knot system, is physically implementable in the same sense as Shor’s quantum ...