Results 31 to 40 of about 15,432,475 (262)

Discrete Element Method, a Tool to Investigate Complex Material Behaviour in Material Forming [PDF]

open access: yes, 2010
Discrete Model is based on the description of the physical state (velocity, position, temperature, magnetic moment, electric potential ..) of a large number of discrete elements that form the media to be studied.
M. G. Lee   +11 more
core   +1 more source

Discrete-time Model Reference Control of Milling Forces under Fractional Order Holds. Part II: Extensions to Adaptive Control [PDF]

open access: yes, 2006
This paper introduces a novel discrete-time model-reference based control of the tool-work-piece interaction force in a milling process. The novelty of the scheme relies on the use of a fractional order hold (FROH) instead of a traditional zero order ...
De la Sen Parte, Manuel   +1 more
core   +1 more source

Discrete Modeling and Period-Adding Bifurcation of DC–DC Converter Feeding Constant Power Load

open access: yesIEEE Access, 2021
In this work, an including the switched evolution process discrete model of a DC–DC converter feeding a switched constant power load is proposed based on the Poincaré mapping rule and matrix exponent method.
Liangyu Huang, Yimin Lu
doaj   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Incorporating discontinuous preferences into the analysis of discrete choice experiments [PDF]

open access: yes, 2007
Discontinuous preferences, Discrete choice experiments, Multinomial error component logit model, Rural environmental landscapes, Willingness to pay,
Scarpa, R.   +10 more
core   +1 more source

A FPGA Modeling Method for Power Electronic Topology Simulation

open access: yesKongzhi Yu Xinxi Jishu, 2020
Power electronic system has many switching devices and its mathematical model is complex and hard to analysis. In addition, the cycle of FPGA modeling is long.
LIU Li, XU Lien, CHEN Liusong
doaj  

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Evaluating the role of speed reduction on the severity of vehicle-pedestrian crashes: a case study in Palermo, Italy

open access: yesFrontiers in Future Transportation
IntroductionThis study examined the influence of real-world vehicle speeds on injury outcomes in police-reported vehicle-to-pedestrian crashes in Palermo, Italy. Specifically, the study quantified the relationship between percentile travel speeds and the
Muhammad Yasir   +5 more
doaj   +1 more source

Application of discrete model in analyzes of built and tested composite bridge construction [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2011
Designing problem and theoretical analyses of steel-concrete composite structures are especially emphasized in bridge engineering. Method of modelling composite constructions developed and established by standards had been improved by use of finite ...
Tarić Mirsad, Sadović Enis
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Home - About - Disclaimer - Privacy