Junjie Liu
Datos Biográficos
| ID | 3729786 |
|---|---|
| NOMBRE | Junjie Liu |
| NOMBRES | Junjie |
| APELLIDO | Liu |
| FIRMA | LIU J |
| AFILIACIONES | Jet Propulsion Laboratory |
| ORCID | 0009-0002-6907-3470 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 35 |
| TOTAL DE CITAS | 5 |
| TOTAL COMO AUTOR | 35 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2014 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2026 |
| ÍNDICE H | 1 |
Supporting Mature-Aged Early Childhood Students’ Online Learning in Australian Higher Education
In early childhood initial teacher education, a growing number of mature-aged students with diploma qualifications and years of professional experience are undertaking their early childhood teacher degrees through online modes. Given the national staff shortage of early childhood teachers and the important role of higher education in professional development, it is crucial to support these students’ success in their online learning. Drawing on th…
Micro
Cultivating computational thinking (CT) for K-12 students has become the central issue in the digital age. However, the most significant impediment to the long-lasting development of students’ CT is teachers’ lack of CT and positive programming attitudes (PA). Therefore, this research aimed to explore the effects of Micro: bit programming training activities on STEM teachers’ CT and PA. We conducted a quasi-experimental study with 55 elementary S…
Grade Level Dynamics of the Predictive Role of College Students' Computational Thinking on Generative Artificial Intelligence Attitudes
PTM encoding
Post-translational modifications (PTMs) form a sophisticated regulatory layer that modulates cellular responses to physiological stimuli, notably exercise-triggered metabolic adaptations like skeletal muscle glucose uptake. Understanding PTM-mediated regulatory logic, namely how several well-characterized PTMs coordinate spatiotemporally to mediate distinct biological functions, has become a critical frontier in decoding metabolic memory mechanis…
A multi-stage optimization framework for creating atmospheric boundary layer in wind tunnels with a short test section
Ammonia emissions and crop yields in China to 2060 under SSP-RCP scenarios with climate change and nitrogen fertilization attribution
Climate change poses unprecedented challenges to agricultural sustainability, with profound implications for environmental quality and crop productivity. However, integrated assessments quantifying the specific contributions of climatic drivers versus management practices to agricultural ammonia (NH 3 ) emissions and crop yields remain limited in China, constraining precision air pollution control and threatening national food security. This stud…
Rhodiola crenulata extract inhibits cell pyroptosis to ameliorate pulmonary vascular remodeling in rats through the regulation of decadienylcarnitine/NLRP3/GSDMD axis
Exercise-specific post-translational modification signatures
Exercise reshapes cellular function and intercellular communication through dynamic post-translational modifications (PTMs) that fine-tune protein activity and inter-organ signaling. However, the traditional aerobic-anaerobic dichotomy does not fully capture PTM-driven regulatory logic across exercise modes. This review centers on the muscle-brain and muscle-liver axes and proposes an operational concept of exercise-specific PTM signatures, empha…
Regional fire dynamics and its contributions to carbon flux variability in South Asia
Fires have a significant impact on the regional carbon budget, the ecosystem, and public health. We analyzed the fire dynamics and its impact on carbon flux across three fire prone regions in South Asia, Region-1 (southwestern Nepal, Uttarakhand), Region-2 (central India), and Region-3 (northeast India) from 2010 to 2021, with a focus on the significant fire season of February, March, and April (FMA) of 2021. We find high burned areas (5000–10 00…
Ammonia transfers through interprovincial agricultural trade and their health burden implications in China
The spatial mismatch between agricultural resources and market demand across China creates significant challenges for food security and environmental management. Although interprovincial agricultural trade can alleviate regional food supply pressures, substantial uncertainties persist regarding the associated ammonia (NH 3 ) emission transfers and their impacts on air quality and human health. Here we fill this gap using a linear programming mode…
Kinase–phosphatase balance in exercise adaptation
Phosphorylation is set by the opposing activities of kinases and phosphatases and this regulation likely contributes to exercise-induced adaptation. It does so by regulating mitochondrial biogenesis, muscle remodeling, and metabolic flexibility. The process by which exercise activates the AMPK, MAPK, and Akt-mTOR pathways, and how phosphatases (MKP, PHLPP, and PHPT1/LHPP) limit signal amplitude and duration to avoid maladaptive behavior, has been…
Risk-carrying capacity, homestead confirmation, and farmers’ homestead withdrawal willingness
This study investigates the effect of risk-carrying capacity ( RCC ) and homestead confirmation on farmers' homestead withdrawal willingness. The aim is to provide theoretical and practical guidance to enhance the utilization efficiency of rural homesteads and promote rural revitalization. Using a binary logistic model, we conduct a baseline analysis of withdrawal willingness, employ threshold regression to identify the dual-threshold effect of R…
How does digital governance platform usage impact social trust in rural Areas? Empirical evidence from rural China
Different programming approaches on primary students’ computational thinking
A two-stage CFD-GNN approach for efficient steady-state prediction of urban airflow and airborne contaminant dispersion
Quantifying the uncertainty of the effects of varying wind conditions on outdoor airflow and pollutant dispersion
Satellite-detected large CO 2 release in southwestern North America during the 2020–2021 drought and associated wildfires
Southwestern North America (SWNA) continuously experienced megadroughts and large wildfires in 2020 and 2021. Here, we quantified their impact on the terrestrial carbon budget using net biome production (NBP) estimates from an ensemble of atmospheric inversions assimilating in-situ CO 2 and Carbon Observatory – 2 (OCO-2) satellite XCO 2 retrievals (OCO-2 v10 MIP Extension), two satellite-based gross primary production (GPP) datasets, and two fire…
Characterizing and communicating uncertainty
Navigating uncertainty is a critical challenge in all fields of science, especially when translating knowledge into real-world policies or management decisions. However, the wide variance in concepts and definitions of uncertainty across scientific fields hinders effective communication. As a microcosm of diverse fields within Earth Science, NASA’s Carbon Monitoring System (CMS) provides a useful crucible in which to identify cross-cutting concep…
Global Carbon Budget 2023
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is critical to better understand the global carbon cycle, support the development of climate policies, and project future climate change. Here we describe and synthesize data sets and methodology to quantify the five major components of the global carbon budget and their uncertai…
Physical and mental health impairments experienced by operating surgeons and camera-holder assistants during laparoscopic surgery
Introduction: -holder assistants during laparoscopic surgery. We aimed to analyze the differences between operating surgeons and camera-holder assistants. Methods: From January 1, 2022, to December 31, 2022, a cross-sectional survey was conducted to evaluate the muscle pain, fatigue, verbal scolding, and task load for operating surgeons and camera-holder assistants. The Nordic Musculoskeletal Questionnaire, the Space Administration Task Load Inde…
The mediating role of incentives in association between leadership attention and self-perceived continuous improvement in infection prevention and control among medical staff
Objectives: Promoting improvement in Infection Prevention and Control (IPC) is an important part of improving the quality of care. The influence of leadership attention and incentives on the self-perceived continuous improvement in IPC has drawn a lot of attention, but relevant academic research is still lacking. The objective of this study is to explore the effect of leadership attention on self-perceived continuous improvement in IPC among medi…
Does air pollution exposure affect semen quality? Evidence from a systematic review and meta-analysis of 93,996 Chinese men
Developing a Base Domain Ontology from Geoscience Report Collection to Aid in Information Retrieval towards Spatiotemporal and Topic Association
The efficient and precise retrieval of desired information from extensive geological databases is a prominent and pivotal focus within the realm of geological information services. Conventional information retrieval methods primarily rely on keyword matching approaches, which often overlook the contextual and semantic aspects of the keywords, consequently impeding the retrieval system’s ability to accurately comprehend user query requirements. To…
Equation discovery of dynamized coefficients in the k-ε model for urban airflow and airborne contaminant dispersion
Outdoor Time, Space, and Restrictions Imposed on Children’s Play in Australian Early Childhood Education and Care Settings during the Covid Pandemic
The study aimed to investigate the impact of COVID-19 restrictions on children's access to the outdoors in early childhood education and care (ECEC) settings. An online survey comprised of a standardised scale and questions used in previous related studies was completed by 143 early childhood educators across Australia. Participants were asked to report children's time spent outdoors, access to outdoor space, and restrictions imposed on children'…
How does digital governance platform usage impact social trust in rural Areas? Empirical evidence from rural China
Risk-carrying capacity, homestead confirmation, and farmers’ homestead withdrawal willingness
This study investigates the effect of risk-carrying capacity ( RCC ) and homestead confirmation on farmers' homestead withdrawal willingness. The aim is to provide theoretical and practical guidance to enhance the utilization efficiency of rural homesteads and promote rural revitalization. Using a binary logistic model, we conduct a baseline analysis of withdrawal willingness, employ threshold regression to identify the dual-threshold effect of R…
Smoking, smoking cessation and tobacco control in rural China
This study highlighted the need to develop tobacco control measures that reflect the unique culture in rural China. Smoking cessation measures are not likely to achieve large scale effect unless the prevailing cigarette sharing and gifting custom is drastically changed. More educations of the hazards of smoking and second-hand smoking to village residents and educations of effective smoking cessation treatment to both village residents and health…
Detecting drought impact on terrestrial biosphere carbon fluxes over contiguous US with satellite observations
With projections of increasing drought in the future, understanding how the natural carbon cycle responds to drought events is needed to predict the fate of the land carbon sink and future atmospheric CO _2 concentrations and climate. We quantified the impacts of the 2011 and 2012 droughts on terrestrial ecosystem carbon uptake anomalies over the contiguous US (CONUS) relative to non-drought years during 2010–2015 using satellite observations and…
Five years of variability in the global carbon cycle
Year-to-year variability in CO 2 fluxes can yield insight into climate-carbon cycle relationships, a fundamental yet uncertain aspect of the terrestrial carbon cycle. In this study, we use global observations from NASA’s Orbiting Carbon Observatory-2 (OCO-2) satellite for years 2015–2019 and a geostatistical inverse model to evaluate 5 years of interannual variability (IAV) in CO 2 fluxes and its relationships with environmental drivers. OCO-2 la…
Emergent constraints on tropical atmospheric aridity—carbon feedbacks and the future of carbon sequestration
Carbon-climate feedbacks, which amplifies or attenuates atmospheric CO 2 from fossil fuel emissions, are one of the largest sources of uncertainty in climate projections. However, these feedbacks depend both on temperature and its coupling to water and energy cycles, especially in the tropics. We show that atmospheric aridity—quantified as vapor pressure deficit (VPD)—is a good proxy for this coupling. Tropical VPD is strongly correlated to the g…
Global Carbon Budget 2021
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions andtheir redistribution among the atmosphere, ocean, and terrestrial biospherein a changing climate is critical to better understand the global carboncycle, support the development of climate policies, and project futureclimate change. Here we describe and synthesize datasets and methodology toquantify the five major components of the global carbon budget and theiruncertainties. …
Global Carbon Budget 2022
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions andtheir redistribution among the atmosphere, ocean, and terrestrial biospherein a changing climate is critical to better understand the global carboncycle, support the development of climate policies, and project futureclimate change. Here we describe and synthesize data sets and methodologies toquantify the five major components of the global carbon budget and theiruncertaintie…
Weighing patient attributes in antibiotic prescribing for upper respiratory tract infections
Objectives This study aimed to determine how primary care physicians weigh intervenable patient attributes in their decisions of antibiotic prescribing for upper respiratory tract infections (URTIs). Methods A discrete choice experiment (DCE) was conducted on 386 primary care physicians selected through a stratified cluster sampling strategy in Hubei province, China. The patient attributes tested in the DCE were identified through semi-structured…
Evaluation of fast fluid dynamics with different turbulence models for predicting outdoor airflow and pollutant dispersion
Global Carbon Budget 2023
Accurate assessment of anthropogenic carbon dioxide (CO2) emissions and their redistribution among the atmosphere, ocean, and terrestrial biosphere in a changing climate is critical to better understand the global carbon cycle, support the development of climate policies, and project future climate change. Here we describe and synthesize data sets and methodology to quantify the five major components of the global carbon budget and their uncertai…
Physical and mental health impairments experienced by operating surgeons and camera-holder assistants during laparoscopic surgery
Introduction: -holder assistants during laparoscopic surgery. We aimed to analyze the differences between operating surgeons and camera-holder assistants. Methods: From January 1, 2022, to December 31, 2022, a cross-sectional survey was conducted to evaluate the muscle pain, fatigue, verbal scolding, and task load for operating surgeons and camera-holder assistants. The Nordic Musculoskeletal Questionnaire, the Space Administration Task Load Inde…
The mediating role of incentives in association between leadership attention and self-perceived continuous improvement in infection prevention and control among medical staff
Objectives: Promoting improvement in Infection Prevention and Control (IPC) is an important part of improving the quality of care. The influence of leadership attention and incentives on the self-perceived continuous improvement in IPC has drawn a lot of attention, but relevant academic research is still lacking. The objective of this study is to explore the effect of leadership attention on self-perceived continuous improvement in IPC among medi…
Does air pollution exposure affect semen quality? Evidence from a systematic review and meta-analysis of 93,996 Chinese men
Developing a Base Domain Ontology from Geoscience Report Collection to Aid in Information Retrieval towards Spatiotemporal and Topic Association
The efficient and precise retrieval of desired information from extensive geological databases is a prominent and pivotal focus within the realm of geological information services. Conventional information retrieval methods primarily rely on keyword matching approaches, which often overlook the contextual and semantic aspects of the keywords, consequently impeding the retrieval system’s ability to accurately comprehend user query requirements. To…
Equation discovery of dynamized coefficients in the k-ε model for urban airflow and airborne contaminant dispersion
Outdoor Time, Space, and Restrictions Imposed on Children’s Play in Australian Early Childhood Education and Care Settings during the Covid Pandemic
The study aimed to investigate the impact of COVID-19 restrictions on children's access to the outdoors in early childhood education and care (ECEC) settings. An online survey comprised of a standardised scale and questions used in previous related studies was completed by 143 early childhood educators across Australia. Participants were asked to report children's time spent outdoors, access to outdoor space, and restrictions imposed on children'…
Analysis of the Spatial and Temporal Evolution of Urban Resilience in Four Southern Regions of Xinjiang
Resilience theory plays a pivotal role in promoting sustainable urban development and the long-term stable development of the national economy. Based on the "scale-density-form" model of urban resilience, this paper shifts the perspective of urban resilience from the eastern region with higher level of economic development and better infrastructure construction to the arid northwest region with more fragile ecological environment and weaker urban…
Digital financial development and indirect household carbon emissions
Different programming approaches on primary students’ computational thinking
A two-stage CFD-GNN approach for efficient steady-state prediction of urban airflow and airborne contaminant dispersion
Quantifying the uncertainty of the effects of varying wind conditions on outdoor airflow and pollutant dispersion
Satellite-detected large CO 2 release in southwestern North America during the 2020–2021 drought and associated wildfires
Southwestern North America (SWNA) continuously experienced megadroughts and large wildfires in 2020 and 2021. Here, we quantified their impact on the terrestrial carbon budget using net biome production (NBP) estimates from an ensemble of atmospheric inversions assimilating in-situ CO 2 and Carbon Observatory – 2 (OCO-2) satellite XCO 2 retrievals (OCO-2 v10 MIP Extension), two satellite-based gross primary production (GPP) datasets, and two fire…
Characterizing and communicating uncertainty
Navigating uncertainty is a critical challenge in all fields of science, especially when translating knowledge into real-world policies or management decisions. However, the wide variance in concepts and definitions of uncertainty across scientific fields hinders effective communication. As a microcosm of diverse fields within Earth Science, NASA’s Carbon Monitoring System (CMS) provides a useful crucible in which to identify cross-cutting concep…
Regional fire dynamics and its contributions to carbon flux variability in South Asia
Fires have a significant impact on the regional carbon budget, the ecosystem, and public health. We analyzed the fire dynamics and its impact on carbon flux across three fire prone regions in South Asia, Region-1 (southwestern Nepal, Uttarakhand), Region-2 (central India), and Region-3 (northeast India) from 2010 to 2021, with a focus on the significant fire season of February, March, and April (FMA) of 2021. We find high burned areas (5000–10 00…
Ammonia transfers through interprovincial agricultural trade and their health burden implications in China
The spatial mismatch between agricultural resources and market demand across China creates significant challenges for food security and environmental management. Although interprovincial agricultural trade can alleviate regional food supply pressures, substantial uncertainties persist regarding the associated ammonia (NH 3 ) emission transfers and their impacts on air quality and human health. Here we fill this gap using a linear programming mode…
Kinase–phosphatase balance in exercise adaptation
Phosphorylation is set by the opposing activities of kinases and phosphatases and this regulation likely contributes to exercise-induced adaptation. It does so by regulating mitochondrial biogenesis, muscle remodeling, and metabolic flexibility. The process by which exercise activates the AMPK, MAPK, and Akt-mTOR pathways, and how phosphatases (MKP, PHLPP, and PHPT1/LHPP) limit signal amplitude and duration to avoid maladaptive behavior, has been…
Environmental Science (13 obras) · Computer Science (9 obras) · Atmospheric and Environmental Gas Dynamics (8 obras) · Carbon cycle (8 obras) · Geography (8 obras) · Atmospheric chemistry and aerosols (7 obras) · Atmospheric sciences (7 obras) · Climate change (7 obras) · Climate variability and models (6 obras) · Climatology (6 obras)