نتایج جستجو برای: intensity measure im
تعداد نتایج: 566523 فیلتر نتایج به سال:
The combined laser model based on transmission line laser mode (TLLM) is extended to investigate intensity modulation (IM) response and frequency modulation (FM) response of SGDBR lasers in this paper. While carrier-depended refraction index, spontaneous emission noise and their coupling are included in the consequent dynamic frequency shift and intensity fluctuation can reflect dynamics of SGD...
Background and Aim: Several agents have been used for labor pain relief. Clinical trials have shown pethidine – promethazine combination as an effective mean. Transcutaneous electrical nerve stimulation (TENS) is a new method for pain relief which uses mild electrical stimulation for inhibition of pain signals in nerves. This method has been used successfully for chronic pains such as low b...
We examined the reliability and validity of scores on an interpersonal measure of borderline personality disorder (BPD). Ratings on the Interpersonal Measure of Borderline Personality Disorder (IM-B) were based on nonverbal behaviors and interpersonal interactions occurring during clinical interviews with 276 adults. Scores on the IM-B exhibited good reliability. IM-B scores also displayed expe...
This study attempts to answer the question of distinguishing appropriate intensity measure parameter for performance-based design or assessment, taking into account the efficiency aspect. The comprehensive comparative tables proposed in this paper could be an effective support in the decision making procedure for intensity measure selection, comprising most of the frequently utilized intensity ...
the objective of this paper is to determine the drift demand hazard curves of steel moment-resisting frames with different number of stories in territory of tehran this is done through the combination of the results obtained from probabilistic seismic hazard analysis and the demand estimated through the best probabilistic seismic demand models. to select the best demand model, in this paper, a ...
Two intensity modulation radiotherapy (IMRT) delivery systems, the "step & shoot" multileaf collimator (MLC) auto-sequence and the use of an intensity modulator, are compared with emphasis on the dose optimization quality and the treatment irradiation time. The intensity modulation (IM) was created by a dose gradient optimization algorithm which maximizes the target dose uniformity while mainta...
Various analytical approaches to performance-based earthquake engineering are in development. This paper summarizes the approach being pursued by the Pacific Earthquake Engineering Research (PEER) Center. It works in four stages: hazard analysis, structural analysis, damage analysis, and loss analysis. In the hazard analysis, one evaluates the seismic hazard at the facility site, producing samp...
A novel scalar ground motion intensity measure (IM), termed the energy-frequency parameter, is proposed based on Hilbert-Huang transform. To validate effectiveness of IM, correlation analysis between engineering demand parameter (EDP) and performed using 1992 recorded motions, in which EDP maximum inter-storey drift structures obtained by nonlinear time-history analysis. Results show that has a...
A critical issue in the probabilistic framework for performance-based earthquake engineering is the choice of ground motion intensity measure(s). In an effort to identify optimum intensity measure(s), a comprehensive parametric statistical study based on 881 earthquake record components was conducted to identify the correlation between (1) seismological variables (SV’s) and traditional ground m...
Disaggregation of probabilistic seismic hazard allows to quantify how much one or more earthquake scenarios contribute the occurrence [exceedance] a ground motion intensity measure ( I M ) $( {IM} )$ threshold interest (x) at construction site. The scenario is usually defined in terms magnitude (M), source-to-site distance (R), and possibly includes standardized residual (?) model considered an...
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