Results 11 to 20 of about 46,231 (260)

D-optimal chemical balance weighing designs with positively correlated errors: part II

Biometrical Letters, 2023
Summary Some questions related to the problem of determining a chemical balance weighing design satisfying the criterion of D-optimality are considered. The theory is based on the assumption that the measurements are equally positively correlated and have the same variances. In this paper, we present a method of adding three measurements
Małgorzata Graczyk, Bronisław Ceranka
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On the optimality of chemical balance weighing designs

Journal of Statistical Planning and Inference, 1983
Optimality of chemical balance weighing designs is considered in this paper. The authors have used a ternary design matrix \(X_ d\in C(N,n)\) for \(N\geq n\) with entries -1,0,1. The authors have chosen the optimality criteria of type I as defined by \textit{C.-S. Cheng} in Ann. Stat. 8, 436- 446 (1980; Zbl 0425.62055).
Jacroux, Mike, Wong, C. S., Masaro, J. C.   +2 more
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Some D-optimal chemical balance weighing designs: theory and examples [PDF]

Biometrical Letters, 2017
Summary In this paper we study a certain kind of experimental designs called chemical balance weighing designs. We consider issues with regard to determining optimality conditions. We give new classes of designs in which we are able to determine an optimal design. Moreover, examples are given for the presented cases.
Bronisław Ceranka, Małgorzata Graczyk
openaire   +1 more source

Optimal experimental designs for fMRI via circulant biased weighing designs

, 2015
Functional magnetic resonance imaging (fMRI) technology is popularly used in many fields for studying how the brain reacts to mental stimuli. The identification of optimal fMRI experimental designs is crucial for rendering precise statistical inference ...
Cheng, Ching-Shui, Kao, Ming-Hung
core   +1 more source

Effects of Gravity and Non-Perpendicularity during Powder-Fed Directed Energy Deposition of Ni-Based Alloy 718 through Two Types of Coaxial Nozzle [PDF]

, 2020
The consequences of gravity and the nozzle inclination angle in the powder-fed Directed Energy Deposition (DED) process were examined in this study.
Alberdi, Amaia, Lamikiz, Aitzol, Ortiz, Mikel, Ramiro-Castro, Pedro   +3 more
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Estimation of Unknown Object Measures in a Chemical Weighing Design with Correlated Errors

Acta Universitatis Lodziensis. Folia Oeconomica
In this paper, some problems that concern the determining of unknown measurements of objects in the model of a chemical balance weighing design are presented.
Małgorzata Graczyk, Bronisław Ceranka
doaj   +1 more source

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

Molecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen, Lucrezia De Santis, Bret M. Stephens, Vincent Bernard, Jörg C. Kalff, Lara Braun, Phillipp Leyendecker, Johannes Röttgen, Daniel Weissinger, Anirban Maitra, Paola A. Guerrero, Alexander Semaan   +11 more
wiley   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source

Introduction [PDF]

, 2002
Wstęp do Acta Universitatis Lodziensis. Folia Oeconomica nr 162Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 zostało ...
Domański, Czesław, Korzeniewski, Jerzy
core  

Cell‐cycle‐specific lesion evolution rather than inhibition of double‐strand‐break repair underpins cisplatin radiosensitization

Molecular Oncology, EarlyView.
We analyze cisplatin–DNA adducts (CDAs) and double‐strand breaks (DSBs) in a cell‐cycle‐dependent manner. We find that CDAs form similarly across all cell cycle phases. DSBs arise only in S‐phase. CDAs might not directly impair DSB repair, but S‐phase DSB lesions evolve in the presence of CDAs and disrupt repair in G2, also causing radiosensitization ...
Ye Qiu, Xixi Lin, Emil Mladenov, Veronika Mladenova, Jürgen Thomale, Ali Sak, Yao Wang, Yunxuan Deng, Eleni Gkika, Martin Stuschke, George Iliakis   +10 more
wiley   +1 more source