نتایج جستجو برای: lifetime prediction
تعداد نتایج: 306363 فیلتر نتایج به سال:
Most ecological management applications use wireless sensor networks (WSNs) to collect data regularly, with great temporal redundancy. As a result, significant amount of energy is used transmitting redundant data, making it tremendously problematic attain satisfactory network lifetime, which bottleneck in enduring such environmental monitoring applications. A two-vector prediction model that ba...
Lifetime data are important in reliability analysis. Classical reliability estimation is based on precise lifetime data. It is usually assumed that observed lifetime data are precise real numbers. However, some collected lifetime data might be imprecise and are represented in the form of fuzzy numbers. Thus, it is necessary to generalize classical statistical estimation methods for real numbers...
This paper proposes a SSADT data analysis method to estimate product reliability based on time series analysis and grey theory. A RTVAR degradation time series model is proposed based on SSADT data. A grey prediction method of RTVAR model is put forward to predict product lifetime. By using the suggested method, product reliability is obtained. An example is presented as a verification of the m...
The present investigation evaluated the associations between lifetime psychedelic use, abuse, and dependence and panic attacks. The study consisted of a representative epidemiological sample from a state wide survey of the Colorado general adult population (n=4745; 52% female). Consistent with prediction, after controlling for theoretically relevant variables, psychedelic abuse and dependence, ...
Reliability of battery state estimation and lifetime prediction is essential to develop operation strategies that improve lifetime, safety, sustainability. However, this difficult, because complex phenomena such as path dependency aging, power capability, voltage hysteresis, or memory effects. Herein, these well test protocols, models, analysis methods being frequently applied in context are re...
It is generally considered as self evident that the lifetime of our vacuum in the landscape of string theory cannot be much shorter than the current age of the universe. Here I show why this lower limit is invalid. A certain type of " parallel universes " is a necessary consequence of the string-landscape dynamics and might well allow us to " survive " vacuum decay. As a consequence our stringy...
In this paper the performance of the proposed DLMT and CLMT algorithms are compared. These proposed algorithms tend to extend the node lifetime. Decentralized lifetime maximizing tree(DLMT) features in nodes with higher energy to be chosen as data aggregating parents while Centralized Lifetime Maximizing Tree(CLMT) features with the identification of the bottleneck node to collect data in a cen...
In October 2011, we had our 7th General Meeting of the Society in San Diego organized by Guy Salvesen, Matt Bogyo and their colleagues. I would like to thank Matt and Guy on the behalf of the Society for all the hard work it took to organize an excellent meeting and for the great hospitality. You can read more about it in the complete meeting report in this issue. At the Meeting we welcomed Chr...
i We present single photon annihilation results from the MARK II detector at PEP based on 100 pb-l of integrated luminosity taken at a center of mass energy fi = 29 GeV. A study of inclusive leptons for momenta 2 2 GeV/c yield the average semileptonic branching ratios of bottom (b) and charm (c) quarks and information about the b fragmentation function. A measurement of the bottom hadron lifeti...
Temporal events are typically visualized on a time line indicating the date they occurred. This perspective is useful when the questions one wishes to answer are related to the date of occurrence. This view, however, makes it difficult to identify patterns related to the relative duration between events or the sequential order. We demonstrate how the simple notion of temporal alignment by some ...
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