Results 71 to 80 of about 10,188 (188)

الاستنتاج الإحصائي لمدة البقاء لمصابي فيروس كورونا في مستشفيات العزل بمحافظة دمياط باستخدام عائلة جومبيرتز [PDF]

المجلة العلمية للدراسات والبحوث المالية والتجارية
يقدم هذا البحث تعميم جديد إستناداً إلي عائلة جومبيرتز ليكون التوزيع الجديد أكثر دقة وكفاءة من التوزيعات الأخرى يسمي هذا التوزيع : (Gompertz alpha Power Lomax distripution ) وتم اشتقاق مختلف الخصائص الهيكلية للتعميم الجديد مثل : دالة الكوانتيل ،والتوقع ...
سارة عمر ابراهيم على الشاوي
doaj   +1 more source

Population modeling of tumor growth curves and the reduced Gompertz model improve prediction of the age of experimental tumors.

PLoS Computational Biology, 2020
Tumor growth curves are classically modeled by means of ordinary differential equations. In analyzing the Gompertz model several studies have reported a striking correlation between the two parameters of the model, which could be used to reduce the ...
Cristina Vaghi, Anne Rodallec, Raphaëlle Fanciullino, Joseph Ciccolini, Jonathan P Mochel, Michalis Mastri, Clair Poignard, John M L Ebos, Sébastien Benzekry   +8 more
doaj   +1 more source

Network Meta‐Analysis of Survival Outcomes With Non‐Proportional Hazards Using Flexible M‐Splines

Statistics in Medicine, Volume 45, Issue 18-19, August 2026.
ABSTRACT Network meta‐analysis (NMA) is widely used in healthcare decision‐making, where estimates of the effect of multiple treatments on outcomes are required. For time‐to‐event outcomes such as survival or disease progression the most common approach is to model log hazard ratios; however, this relies on the proportional hazards assumption.
David M. Phillippo, Ayman Sadek, Hugo Pedder, Nicky J. Welton   +3 more
wiley   +1 more source

Gompertz-Weibull {Gompertz} Type I: A Four-Parameter Generalization of the Weibull Family

Journal of Statistical Theory and Practice
AbstractIn this paper, we provide a construction method that provides greater flexibility in modeling real-world phenomenon by generalizing univariate probability distributions. The Gompertz distribution is used to provide new classes of models through T-X{Y} construction, in a manner we will define as a “proper” generalization, illustrated by ...
Scott Smith, Brenda Diaz-Martinez
openaire   +2 more sources

Electrochemical Glucose Sensing at a Multifunctional Hydrogel‐Modified Laser‐Induced Graphene Interface

Small Structures, Volume 7, Issue 8, August 2026.
A multifunctional laser‐induced graphene biointerface integrating Ir–Pt nanozymes and an electropolymerized hydrogel supports glucose oxidase immobilization, amplified H2O2 detection, and glucose sensing over a broad concentration range. Antifouling and antibacterial properties are introduced simultaneously, demonstrating a simple surface‐engineering ...
Aiswarya Manohar, Angelika Łepek, Aleksandra M. Kocot, Julita Smalc‐Koziorowska, Tomasz Swebocki, Mohsen Khodadadi Yazdi, Jacek Ryl   +6 more
wiley   +1 more source

Construction and Validation of Plasma Protein‐Based Musculoskeletal Biological Age and Genetic and Environmental Risk Profiles

Aging Cell, Volume 25, Issue 8, August 2026.
We developed plasma protein‐based musculoskeletal aging clocks, MSKAge and MSKAgeMort, using UK Biobank proteomic data, and showed that MSKAgeAccel and MSKAgeMortAccel (in particular) predicted mortality, musculoskeletal disorders, and age‐related diseases effectively.
Yangdan Zhong, Maoyao Xia, Xunying Zhao, Yang Qu, Bowen Lei, Sirui Zhen, Tao Han, Rong Xiang, Jinyu Xiao, Xin Song, Xiaofeng Ma, Bin Yang, Di Zhang, Jinyu Zhou, Zilan Chen, Yuqi Pang, Ye Ju, Ting Liu, Zihao Li, Lu Long, Tao Zhang, Jiayuan Li, Mengyu Fan, Zuyun Liu, Xia Jiang   +24 more
wiley   +1 more source

Properties of Gompertz data revealed with non-Gompertz integrable difference equation

Cogent Mathematics & Statistics, 2019
AbstractBehaviour of the upper limit estimated by an unsuitable model (the logistic curve model) was mathematically analysed for data on an exact solution of the Gompertz curve model with integrabl...
openaire   +1 more source

Gompertz curves with seasonality [PDF]

Technological Forecasting and Social Change, 1994
This paper considers an extension of the usual Gompertz curve by allowing the parameters to vary over the seasons. This means that, for example, saturation levels can be different over the year. An estimation and testing method is proposed and illustrated with an example.
openaire   +2 more sources

A Joint Pest Management Model for the Bean Fly Complex, Ophiomyia spencerella and Ophiomyia phaseoli (Diptera: Agromyzidae)

Journal of Applied Entomology, Volume 150, Issue 7, Page 882-889, August 2026.
ABSTRACT The common bean is an important crop in Eastern Africa for smallholder farmers, yet yields are often reduced due to pests, particularly Ophiomyia spencerella and Ophiomyia phaseoli. These species are partially sympatric and commonly known as the bean fly. Here, based on the similarity of their life history and developmental biology, field data
Elizabeth A. Finch, Suzy V. Wood, Bryony Taylor, Stacey Odunga, Patrick Kalama, MaryLucy Oronje, Duncan Chacha, Norbert Maczey, Tim Beale, Alyssa Lowry, Sean T. Murphy   +10 more
wiley   +1 more source

Predictive Modeling of Bacterial Inactivation With Hydrogen Peroxide Over a Cobalt Ferrite Catalyst

ChemPhysChem, Volume 27, Issue 14, 29 July 2026.
Hydrogen peroxide decomposition over a cobalt ferrite catalyst generates hydroxyl radicals for bacterial inactivation. A hybrid machine learning model combining gradient boosting and random forest accurately predicts nonlinear disinfection kinetics, offering a new data‐driven framework for catalytic advanced oxidation processes and intelligent water ...
Viktor Husak, Nazarii Danyliuk, Hynek Roubik, Olena Bobrova, Stacy Denise Hammond Hammond, Alexander Shyichuk   +5 more
wiley   +1 more source