Results 161 to 170 of about 7,785,767 (337)

Pre-service Teachers’ Mental Models of Basic Astronomy Concepts [PDF]

open access: yes, 2016
The aim of the present study is to determine pre-service teachers’ mental models related to basic astronomy concepts. The study was conducted using a survey method with 293 pre-service teachers from 4 different departments; physics education, science ...
Durukan, Ümmü Gülsüm   +1 more
core  

Galaxy Morphology Classification via Deep Semisupervised Learning with Limited Labeled Data

open access: yesThe Astrophysical Journal Supplement Series
Galaxy morphology classification plays a crucial role in understanding the structure and evolution of the Universe. With galaxy observation data growing exponentially, machine learning has become a core technology for this classification task.
Zhijian Luo   +6 more
doaj   +1 more source

Dry‑Contact Trimming for All‑Perovskite Tandem Solar Cells via Solid‑Solution Homogenization

open access: yesAdvanced Energy Materials, EarlyView.
Narrow‐bandgap Sn–Pb perovskites are promising bottom absorbers for all‐perovskite tandems but suffer from Sn‐rich surfaces and depth‐dependent lattice/compositional inhomogeneity. Layered‐perovskite‐assisted dry‐contact trimming removes Sn‐rich surface species and reconfigures the Sn–Pb absorber, enabling efficient charge collection, reduced voltage ...
Woocheol Han   +10 more
wiley   +1 more source

Memories Of Astronomy Education In Brazil: Clippings From The Discourses Of Interviewed Researchers On The Subject [PDF]

open access: yes, 2014
This paper presents a historical retrospective concerning data from a research in Astronomy Education in Brazil, after 1973. It was organized on the basis of the speech analysis of national researchers considered references in this field by their peers ...
Nardi, Roberto, Iachel, Gustavo
core  

libyt: An In Situ Interface Connecting Simulations with yt, Python, and Jupyter Workflows

open access: yesThe Astrophysical Journal Supplement Series
In the exascale computing era, handling and analyzing massive data sets have become extremely challenging. In situ analysis, which processes data during simulation runtime and bypasses costly intermediate disk input and output steps, offers a promising ...
Shin-Rong Tsai   +2 more
doaj   +1 more source

CARAD: Computer-aided Analysis of Radio Astronomy Data

open access: yes
Radio astronomy studies celestial objects by detecting their radio frequency emissions, enabling observation of phenomena invisible at other wavelengths. Next-generation telescopes generate unprecedented data volumes that challenge traditional analytical approaches.
openaire   +2 more sources

A Kinetic–Energetic Bottleneck of Charge‐Transfer Injection Governs Energy Loss in Organic Solar Cells

open access: yesAdvanced Energy Materials, EarlyView.
Kinetic–energetic projection of time‐resolved photoluminescence reveals that charge‐transfer injection acts as a universal bottleneck in organic solar cells. A physics‐constrained Bayesian framework identifies an emergent effective CT injection rate governing the trade‐off between charge generation and nonradiative energy loss.
Rong Wang   +16 more
wiley   +1 more source

The IDL astronomy user's library [PDF]

open access: yes, 1992
IDL (Interactive Data Language) is a commercial programming, plotting, and image display language, which is widely used in astronomy. The IDL Astronomy User's Library is a central repository of over 400 astronomy-related IDL procedures accessible via ...
Landsman, W. B.
core   +1 more source

A Semisupervised Approach Using the Adaptive Threshold Mechanism and Boundary-aware Learning for Radio-frequency Interference Segmentation

open access: yesThe Astrophysical Journal Supplement Series
In the task of radio-frequency interference (RFI) detection, the scarcity of high-quality labeled samples limits the performance of supervised models, while the severe class imbalance between background and RFI makes semisupervised methods prone to ...
Suxun Zhu   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy