Results 31 to 40 of about 1,623,979 (311)

Identification of causal intervention effects under contagion

open access: yesJournal of Causal Inference, 2021
Defining and identifying causal intervention effects for transmissible infectious disease outcomes is challenging because a treatment – such as a vaccine – given to one individual may affect the infection outcomes of others. Epidemiologists have proposed
Cai Xiaoxuan   +2 more
doaj   +1 more source

Optimal Control of a Dengue-Dengvaxia Model: Comparison Between Vaccination and Vector Control

open access: yesComputational and Mathematical Biophysics, 2021
Dengue is the most common mosquito-borne viral infection transmitted disease. It is due to the four types of viruses (DENV-1, DENV-2, DENV-3, DENV-4), which transmit through the bite of infected Aedes aegypti and Aedes albopictus female mosquitoes during
Mentuda Cheryl Q.
doaj   +1 more source

Ferromagnetism of the 1-D Kondo Lattice Model: A Quantum Monte Carlo Study

open access: yes, 1992
The one dimensional Kondo lattice model is investigated using Quantum Monte Carlo and transfer matrix techniques. In the strong coupling region ferromagnetic ordering is found even at large band fillings.
Troyer, Matthias, Würtz, Diethelm
core   +1 more source

Topological 2-Dimensional Quantum Mechanics

open access: yes, 1993
We define a Chern- Simons Lagrangian for a system of planar particles topologically interacting at a distance. The anyon model appears as a particular case where all the particles are identical.
de Veigy, Alain Dasnieres   +1 more
core   +2 more sources

Äge E-viirushepatiit. Haigusjuhu kirjeldus [PDF]

open access: yes, 2013
E-hepatiidi viirus avastati 1983. aastal. Kuni viimase ajani oldi arvamusel, et E-hepatiit on vaid endeemilistes piirkondades esinev haigus ja sellesse haigestutakse neid piirkondi külastades.
Pihlak, Rita   +2 more
core   +2 more sources

Hiệu quả đổi mới các doanh nghiệp tại Việt Nam

open access: yesTạp chí Khoa học Đại học Cần Thơ, 2020
Bài viết này nhằm mục đích phân tích hiệu quả đổi mới các doanh nghiệp tại Việt Nam. Số liệu trong nghiên cứu được trích ra từ cuộc khảo sát các doanh nghiệp tại Việt Nam của World Bank năm 2015, nghiên cứu trích dữ liệu từ 442 doanh nghiệp trong cuộc ...
Nguyễn Hoàng Minh
doaj   +1 more source

Mathematical analysis of an epidemic model with direct and indirect transmission modes and two delays

open access: yesNonautonomous Dynamical Systems, 2023
In this article, we consider an epidemiological model in which we take into account the effects of direct and indirect transmissions. The first mode occurs through direct contact between infectious and susceptible individuals, and the second one will ...
Najm Fatiha   +4 more
doaj   +1 more source

Gravitational Phase Transitions in Infrared Quantum Gravity

open access: yes, 1992
The conformal anomaly induced sector of four-dimensional quantum gravity (infrared quantum gravity) ---which has been introduced by Antoniadis and Mottola--- is here studied on a curved fiducial background.
Elizalde, E., Odintsov, S. D.
core   +1 more source

Dendritic cells steering antigen and leukocyte traffic in lymph nodes

open access: yesFEBS Letters, EarlyView.
Dendritic cells are key players in the activation of T cells and their commitment to effector function. In this In a Nutshell Review, we will discuss how dendritic cells guide the trafficking of antigen and leukocytes in the lymph node, thus influencing T‐cell activation processes. Dendritic cells (DCs) play a central role in initiating and shaping the
Enrico Dotta   +3 more
wiley   +1 more source

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