Results 21 to 30 of about 51,964 (204)

Chromatographic Identification of Leaf Color Characteristics on Fine-flavor and Bulk Cacao as Selection Indicator [PDF]

open access: yes, 2016
A problem encountered in plant breeding process to determine bean color quality of fine-flavor cocoa is a long selection period. Preliminary results indicatedthat the fine-flavor cocoa has a low color reflectance than bulk cocoa.
Adhiwibawa, M. A. (Marcelinus)   +3 more
core   +2 more sources

Analysis of Baseband Algorithms for LEO PNT

open access: yesENC 2023, 2023
This paper provides an analysis of the impact of transmitter dynamics on baseband algorithms for position, navigation and timing applications using a low Earth orbit constellation. In particular, the acquisition and tracking of signals with high dynamics have larger Doppler and Doppler drift values that might impair the use of standard methods.
Fran Fabra   +2 more
openaire   +5 more sources

Postoperative neck tilt in Lenke 1 and 2 AIS patients after correction surgery: a novel predictive index

open access: yesBMC Musculoskeletal Disorders, 2019
Background Postoperative neck tilt (PNT) is a phenomenon in adolescent idiopathic scoliosis (AIS) patients which is distinct form shoulder imbalance. There were scarce studies performed to explore the risk factors for PNT in Lenke 1 and 2 AIS patients ...
Yilin Yang   +8 more
doaj   +1 more source

Substantial bulk photovoltaic effect enhancement via nanolayering. [PDF]

open access: yes, 2016
Spontaneous polarization and inversion symmetry breaking in ferroelectric materials lead to their use as photovoltaic devices. However, further advancement of their applications are hindered by the paucity of ways of reducing bandgaps and enhancing ...
Grinberg, Ilya   +4 more
core   +1 more source

An Exact and Robust Conformal Inference Method for Counterfactual and Synthetic Controls

open access: yes, 2020
We introduce new inference procedures for counterfactual and synthetic control methods for policy evaluation. We recast the causal inference problem as a counterfactual prediction and a structural breaks testing problem.
Chernozhukov, Victor   +2 more
core   +1 more source

Discussion on the Construction of PNT Policies, Regulations and Standard System

open access: yes天地一体化信息网络, 2021
The national comprehensive PNT system of systems (SoS) with the BeiDou system as its core is a signifi cant part of the new generation of information infrastructures.Perfect policies, regulations and standards are important prerequisites and guarantees ...
Gang LIU   +3 more
doaj   +2 more sources

Galaxy Evolution: Modeling the Role of Non-thermal Pressure in the Interstellar medium [PDF]

open access: yes, 2015
Galaxy evolution depends strongly on the physics of the interstellar medium (ISM). Motivated by the need to incorporate the properties of the ISM in cosmological simulations we construct a simple method to include the contribution of non-thermal ...
Balberg, Shmuel   +2 more
core   +1 more source

Quantitative ultrasound assessment of bone tissue in premature newborn twins

open access: yesPatologìâ, 2022
Multiple pregnancy is associated with a high risk premature newborn twins (PNT) birth and the formation of low bone mass. Determining the state of bone tissue (BT) after birth is important for understanding the dynamics of its changes in the PNTs’ growth.
A. Yu. Tsymbal, Yu. V. Kotlova
doaj   +1 more source

Massive protostars as gamma-ray sources [PDF]

open access: yes, 2009
Massive protostars have associated bipolar outflows with velocities of hundreds of km s$^{-1}$. Such outflows can produce strong shocks when interact with the ambient medium leading to regions of non-thermal radio emission.
A. T. Araudo   +38 more
core   +3 more sources

Enhancing PPP-B2b Performance with Regional Atmospheric Augmentation

open access: yesRemote Sensing
Currently, the PPP-B2b service faces challenges such as long convergence times and re-convergence issues after signal interruptions due to the lack of high-precision atmospheric enhancement.
Qing Zhao   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy