نتایج جستجو برای: lti

تعداد نتایج: 1526  

2017
Kanyarat Katanyoo

OBJECTIVE To evaluate treatment outcomes between stage IIIB cervical cancer with and without lower third of vaginal invasion (LTI) in terms of response to treatment and overall survival (OS). METHODS Matching one patient with LTI for 2 patients without LTI who had completed treatment between 1995 and 2012 were conducted by using treatment modalities (radiation therapy [RT] alone vs. concurren...

2011
Y. H. Zhang S. D. Zhang F. Yi Z. Y. Chen

The basic structure parameters of lower tropospheric inversions (LTIs) have been derived from 10 years (1998–2007) of high vertical resolution (∼50 m) radiosonde observations over 56 United States stations. Seasonal and longitudinal variability of these parameters are presented and the formation mechanisms of LTI are also discussed. It is found that LTI seems to be a common feature over the con...

Journal: :CoRR 2014
B. Baykant Alagoz

Linear time invariant (LTI) systems are widely used for modeling system dynamics in science and engineering problems. Harmonic oscillation of LTI systems are widely used for modeling and analyses of periodic physical phenomenon. This study investigates sufficient conditions to obtain harmonic oscillation for high-order LTI systems. The paper presents a design procedure for controlling harmonic ...

Journal: :IEEE Trans. Automat. Contr. 2000
Jingxin Zhang Cishen Zhang

This note investigates robustness of linear periodically time varying (LPTV) control of discrete linear time invariant (LTI) plants subject to LTI unstructured perturbations. The note first derives a necessary and sufficient condition for robust stability of an LPTV system subject to LTI perturbations, which is less conservative than the well known small gain condition. It then presents a quant...

2017
Yi-Wen Wang Ting-Yun Lin Ching-Hsiu Peng Jui-Lin Huang Szu-Chun Hung

Muscle wasting is common and is associated with increased morbidity and mortality in patients with chronic kidney disease (CKD). However, factors associated with decreased muscle mass in CKD patients are seldom reported. We performed a cross-sectional study of 326 patients (age 65.8 ± 13.3 years) with stage 3-5 CKD who were not yet on dialysis. Muscle mass was determined using the Body Composit...

2015
Rodolfo Valtuille Maria Elisa Casos Elmer Andres Fernandez Adrian Guinsburg Cristina Marelli

The aims of this study were to analyse body composition, to detect the presence of undernutrition, and to establish a relationship between undernutrition and the biological markers routinely used as indicators of nutritional status in hemodialysis (HD) patients (pts). We used a body composition monitor (BCM) that expresses body weight in terms of lean tissue mass (LTM) and fat tissue mass (FTM)...

The integer word-length optimization known as range analysis (RA) of the fixed-point designs is a challenging problem in high level synthesis and optimization of linear-time-invariant (LTI) systems. The analysis has significant effects on the resource usage, accuracy and efficiency of the final implementation, as well as the optimization time. Conventional methods in recursive LTI systems suffe...

2005
Tae Min Kim Yeon Hee Park Sang-Yoon Lee Ji-Hoon Kim Dong-Wan Kim Seock-Ah Im Tae-You Kim Chul Woo Kim Dae Seog Heo Yung-Jue Bang Kee-Hyun Chang Kyeong Kim

This study was launched to determine the prognostic significance of local tumor invasiveness (LTI) in 114 patients diagnosed with stage IE/IIE extranodal natural killer (NK)/T-cell lymphoma, nasal type (NTCL). LTI was defined as bony invasion or destruction or tumor invasion of the skin. Complete remission (CR), overall survival (OS), and disease-free survival (DFS) were compared between each g...

2002
LI QIU ZHIYUAN REN JIE CHEN

In this paper, we address the performance limitation issues in estimation problems. Our purpose is to explicitly relate the best achievable estimation errors with simple plant characteristics. In particular, we study performance limitations in achieving four objectives: (1) estimating the output of an LTI system from its version corrupted by a white noise, (2) estimating a Brownian motion from ...

2011
Edward J. Davison

In this paper, we study the real controllability radius of higher-order linear timeinvariant (LTI) systems, LTI descriptor systems, and time-delay LTI systems. The various radii are defined in terms of real parametric perturbations, and computable formulas are derived using generalized real perturbation values of matrix pairs.

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