Results 21 to 30 of about 534,426 (265)

Quantitative analysis and mathematic modeling of the global outbreak of COVID-19

open access: yesJournal of Infection in Developing Countries, 2020
The coronavirus pandemic is the biggest in the past 100 years, affected over 200 countries and killed over 300 thousand people. To better understand the epidemics in different areas, the progress percentage was generated in this study by dividing ...
Yanyan Jiang   +3 more
doaj   +1 more source

PROJECTION OF THE INFLATION RATE IN PANGKALPINANG CITY USING THE AUTOREGRESSIVE MOVING AVERAGE (ARMA)

open access: yesBarekeng, 2023
Inflation is one of the variables in the macro economy that can affect people's welfare and is defined as a complex phenomenon due to general and continuous price increases.
Desy Yuliana Dalimunthe   +4 more
doaj   +1 more source

Projects, Project Capabilities and Project Organizations [PDF]

open access: yes, 2011
This chapter clarifies our understanding of the project-based firm (PBF) by sharpening the theoretical foundations of project capabilities. It emphasizes the differences between project capabilities that eliminate variance in project outcomes (to control costs and add value) and economies of scale that reduce costs across multiple projects.
Nightingale, P.   +2 more
openaire   +2 more sources

Study on Gamma Spectrum Stabilization Method for SiPM-GAGG(Ce) Detector

open access: yesYuanzineng kexue jishu, 2023
Silicon photomultiplier (SiPM) is a new type of photoelectric conversion device with high gain and low power consumption since the 21st century. It consists of thousands of single photon avalanche diodes (SPADs) operating in Geiger mode connected in ...
LEI Wenming;LI Jinglun;AI Xianyun;XIAO Wuyun;ZHANG Jipeng;XIAO Xiong;ZHANG Bin;ZHAO Wei;WANG Ying
doaj  

DOA Estimation for Highly Correlated and Coherent Multipath Signals with Ultralow SNRs

open access: yesInternational Journal of Antennas and Propagation, 2019
In a typical multipath propagation environment, there exists a strong direct path signal accompanying with several weak multipath signals. Due to the strong direct path interference and other masking effects, the Direction-of-Arrival (DOA) of a weak ...
Li Cheng   +3 more
doaj   +1 more source

Exploration of Weak Peak Detection Method Based on Gamma Spectra Deconvolution

open access: yesYuanzineng kexue jishu
To improve the analytical performance of low resolution gamma spectrometers, a new method based on spectrum deconvolution to detect weak peaks was put forward.
SONG Yiming, ZHOU Qianqian, CHEN Ye, LIU Dahai, ZHOU Hongzhao, XIAO Wuyun
doaj   +1 more source

The Mesoscopic Connectome of the Cholinergic Pontomesencephalic Tegmentum

open access: yesFrontiers in Neuroanatomy, 2022
The pontomesencephalic tegmentum, comprising the pedunculopontine nucleus and laterodorsal tegmental nucleus, is involved in various functions via complex connections; however, the organizational structure of these circuits in the whole brain is not ...
Peilin Zhao   +9 more
doaj   +1 more source

Extent of Saltwater Intrusion and the Freshwater Exploitability in the Coastal Vietnamese Mekong Delta. A Case Study in Ham Luong estuary [PDF]

open access: yesE3S Web of Conferences
Climate change-driven sea level rise has intensified saltwater intrusion in deltas worldwide, posing significant threats to the exploitation of freshwater resource.
Bich Thuc Pham Thi   +4 more
doaj   +1 more source

Prevalence of 21 Physician‐Defined Severe Toxicities Following Childhood Acute Lymphoblastic Leukemia Treatment: Australian Retrospective Cohort Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Acute lymphoblastic leukemia (ALL) is the most common pediatric cancer, with an overall survival now surpassing 90% in developed countries. However, treatments are not without adverse effects. In this study, we apply the severe toxicity‐free survival (STFS) framework to determine the prevalence of 21 physician‐defined severe ...
Lane Collier   +10 more
wiley   +1 more source

Projective Connections and Projective Transformations [PDF]

open access: yesNagoya Mathematical Journal, 1957
The main purpose of the present paper is to establish a theorem concerning the relation between the group of all projective transformations on an affinely connected manifold and the group of all affine transformations.
openaire   +2 more sources

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