Results 71 to 80 of about 125,355 (253)
Survival parametric modeling for patients with heart failure based on Kernel learning
BMC Medical Research MethodologyTime-to-event data are very common in medical applications. Regression models have been developed on such data especially in the field of survival analysis.
Maryam Montaseri +4 more
doaj +1 more source
The correction for naive estimation of the accelerated failure time model with repeat measurements
, 2016 在加速壽命統計模型中, 自變數對壽命的效用很容易解讀, 可視為壽命取對數後的分 佈的位置參數, 具有將壽命直接乘除一個常數的效果. 當自變數無法準確觀測而有重複 觀測值時, 直接使用觀測到的平均值當成真實自變數所進行的統計分析, 其推論結果是 不正確的, 且不論樣本大小其估計量皆具有相當的偏誤. 本文檢視上述原始分析具有偏 誤的原因並據以提出一個修正的方法, 該方法需要有重複觀測值, 但對於測量誤差及自 變數無需太多的分佈假設.
黃逸輝
core
Generalized M-estimation for the accelerated failure time model
, 2015 The accelerated failure time (AFT) model is an important regression tool to study the association between failure time and covariates. In this paper, we propose a robust weighted generalized M (GM) estimation for the AFT model with right-censored data by
Hu, Tao +3 more
core +1 more source
Hydrostatic pressure activates HIF‐1α via β‐catenin to promote stemness in breast cancer cells
FEBS Open Bio, EarlyView.To mimic the elevated intestinal fluid pressure in breast cancers, we loaded human breast cancer cells (MCF‐7, MDA‐MB‐453, and BT‐474) to 50 mmHg hydrostatic pressure. Hydrostatic pressure exposure upregulated HIF‐1α and induced stemness in MCF‐7 and BT‐474 cells.
Da Zhai +8 more
wiley +1 more source
Journal of Advanced Transportation, 2020 In the development of effective rear-end collision alarm systems, understanding the factors that influence the perception response times (PRT) of drivers is important for the design of a reasonable lead time for the warning (or intervention) of likely ...
Yingshi Guo +5 more
doaj +1 more source
Directed evolution of enzymes at the crossroads of tradition and innovation
FEBS Open Bio, EarlyView.An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova +2 more
wiley +1 more source
Perbandingan Model Cox Proportional Hazard Dan Model Accelerated Failure Time Pada Penderita Stroke
, 2018 Stroke merupakan penyakit tidak menular yang timbul semata-mata disebabkan oleh penyakit pembuluh darah otak dan muncul secara mendadak tanpa ada gejala dini.
SERAMITA, Dewi Mumpuni
core
, 2022 Survival analysis is a set of methods for statistical inference concerning the time until the occurrence of an event. One of the main objectives of survival analysis is to evaluate the effects of different covariates on event time.
Takeuchi, Ayano +9 more
core +1 more source
Effect of terahertz irradiation on DNA damage repair in living cells
FEBS Open Bio, EarlyView.We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno +3 more
wiley +1 more source
Failure pattern of dispersive soil slopes under the action of rainfall conditions
Alexandria Engineering JournalDispersive soil slopes are widely distributed in Northeast China. To analyze the failure caused by such slopes under various rainfall conditions, section K27 of the road-cutting slope of the Sui-Da Expressway in Heilongjiang Province, China, is ...
Zechuang Li, Zhiyi Yin
doaj +1 more source