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361 Results Found

  • Article
  • Open Access
3 Citations
4,076 Views
20 Pages

28 October 2021

Empirical studies of the global liquidity spillover on Indonesia’s economy are still relatively limited. Most of the global contagion literature on Indonesia’s economy focuses only on the effects of real shock (on output) due to financial shock. We a...

  • Article
  • Open Access
4 Citations
2,577 Views
17 Pages

18 October 2024

The global food market’s escalating volatility has led to a complex network of uncertainty and risk transmission across different grain markets. This study utilizes the Time-Varying Parameter Vector Autoregression (TVP-VAR)-Connectedness approa...

  • Article
  • Open Access
1,309 Views
33 Pages

Dynamic Volatility Spillovers Among G20 Economies During the Global Crisis Periods—A TVP VAR Analysis

  • Himanshu Goel,
  • Parminder Bajaj,
  • Monika Agarwal,
  • Abdallah AlKhawaja and
  • Suzan Dsouza

Previous research on financial contagion has mostly looked at volatility spillovers using static or fixed parameter models. These models don’t always take into account how inter-market links change and depend on frequency during big crises. Thi...

  • Article
  • Open Access
8 Citations
4,762 Views
24 Pages

Economic Resilience in Post-Pandemic India: Analysing Stock Volatility and Global Links Using VAR-DCC-GARCH and Wavelet Approach

  • Narayana Maharana,
  • Ashok Kumar Panigrahi,
  • Suman Kalyan Chaudhury,
  • Minal Uprety,
  • Pratibha Barik and
  • Pushparaj Kulkarni

This study explores the resilience of the Indian stock market in the face of global shocks in the post-pandemic era, focusing on its volatility dynamics and interconnections with international indices. Through a combination of Vector Autoregression (...

  • Article
  • Open Access
4 Citations
4,135 Views
25 Pages

14 October 2022

Background: Time series analyses on the relationship between nurse staffing and inpatient care quality are rare due to inconsistent frequencies of data between common observations of nurse-staffing (e.g., monthly) and inpatient care quality indicator...

  • Article
  • Open Access
1 Citations
3,564 Views
17 Pages

Connectedness between Pakistan’s Stock Markets with Global Factors: An Application of Quantile VAR Network Model

  • Syeda Beena Zaidi,
  • Abidullah Khan,
  • Shabeer Khan,
  • Mohd Ziaur Rehman,
  • Wadi B. Alonazi and
  • Abul Ala Noman

6 October 2023

This study aims to provide important insights regarding the integrated structure of global factors and Pakistan’s leading sector-level indices by estimating the dynamic network and pairwise connectedness of the global crude oil index, MSCI inde...

  • Article
  • Open Access
8 Citations
5,344 Views
20 Pages

This study examines how the COVID-19 pandemic impacted stock market volatility and interconnectedness between India and other selected global economies. The analysis, using data from 2016 to 2024, reveals a substantial rise in volatility within both...

  • Article
  • Open Access
5 Citations
3,481 Views
28 Pages

Dynamic Spillovers of Economic Policy Uncertainty: A TVP-VAR Analysis of Latin American and Global EPU Indices

  • Nini Johana Marín-Rodríguez,
  • Juan David González-Ruíz and
  • Sergio Botero

This study examines the dynamic interconnectedness of economic policy uncertainty (EPU) among Latin American economies—Brazil, Chile, Colombia, and Mexico—and significant international regions, including the United States, Europe, and Jap...

  • Article
  • Open Access
3,674 Views
19 Pages

9 April 2020

An efficient regional hybrid ensemble-variational (EnVar) data assimilation method using the global-ensemble-model-augmented error covariance is proposed and preliminarily tested in this study. This method uses the global ensemble error covariance as...

  • Article
  • Open Access
2 Citations
1,875 Views
18 Pages

5 February 2024

Policymakers are looking at renewable energy as a substitute for traditional fossil fuels due to the growing concern about climate change and sustainable development. However, in the case of Asian countries, nothing is known about how ICT trade and f...

  • Article
  • Open Access
6 Citations
4,520 Views
17 Pages

15 May 2023

The goal of this study is to detect linear and nonlinear causal pathways toward climate change as measured by changes in global mean surface temperature and global mean sea level over time using a data-based approach in contrast to the traditional ph...

  • Article
  • Open Access
3,262 Views
32 Pages

Uncertainty, Risk, and Opaque Stock Markets

  • José Gabriel Astaíza-Gómez

This study examined how uncertainty and global risk affect financial markets in emerging economies, focusing on foreign investment, CDS spreads, exchange rates, and stock return volatility. Using over 8.6 million ticker transaction observations and s...

  • Article
  • Open Access
6 Citations
2,631 Views
12 Pages

16 October 2020

Experimental, latitudinal, and historical approaches have been used to explore and/or predict the effects of global change on biota, and each approach has its own advantages and disadvantages. The weaknesses of these individual approaches can, potent...

  • Article
  • Open Access
4 Citations
4,374 Views
18 Pages

18 July 2023

Events such as COVID-19 and the Russia–Ukraine conflict have significantly increased the uncertainty and volatility of global economic policies. In the context of economic globalization, the key question we investigate is whether global economi...

  • Article
  • Open Access
28 Citations
7,526 Views
14 Pages

9 September 2018

The flexible alternating current transmission systems (FACTS) have been widely used in modern power systems. Because of the presence of the FACTS devices, distance relays in transmission lines may inaccurately locate fault locations. Therefore, it is...

  • Article
  • Open Access
4 Citations
3,426 Views
32 Pages

23 May 2022

This paper investigates the possibility of using the global VAR (GVAR) model to estimate a simple New Keynesian DSGE-type multi-country model. The long-run forecasts from an estimated GVAR model were used to calculate the steady-states of macro varia...

  • Article
  • Open Access
8 Citations
3,524 Views
23 Pages

21 February 2024

Numerical modeling is widely acknowledged as a highly precise method for understanding the dynamics of contaminant transport in groundwater. However, due to the intricate characteristics of environmental systems and the lack of accurate information,...

  • Article
  • Open Access
7 Citations
3,298 Views
12 Pages

28 September 2021

Cabbage (Brassica oleracea L. var. capitata L.) is an important vegetable crop cultivated around the world. Previous studies of cabbage gene transcripts were primarily based on next-generation sequencing (NGS) technology which cannot provide accurate...

  • Article
  • Open Access
2 Citations
3,545 Views
74 Pages

This study assesses the informational usefulness of several uncertainty metrics in predicting the monetary policy and actual economic activity of Tunisia. We use a Bayesian time-varying vector autoregressive (VAR) model to identify uncertainty shocks...

  • Article
  • Open Access
1 Citations
2,793 Views
17 Pages

We tested the connection between technology shocks and the efficiency of equity markets in developed and emerging economies. We augmented the Global Vector Autoregressive (GVAR) database that covers data on 33 developed and emerging markets with the...

  • Article
  • Open Access
5 Citations
4,223 Views
16 Pages

Macroalgae are the primary source of non-animal sulphated polysaccharides (SPs) in the marine environment with fucoidans derived from brown algae (Phaeophyta) and carrageenans from red algae (Rhodophyta). Much research has been carried out on SP effe...

  • Article
  • Open Access
1 Citations
2,654 Views
21 Pages

Impacts of GNSS RO Data on Typhoon Forecasts Using Global FV3GFS with GSI 4DEnVar

  • Tang-Xun Hong,
  • Ching-Yuang Huang,
  • Chen-Yang Lin,
  • Guo-Yuan Lien,
  • Zih-Mao Huang and
  • Shu-Ya Chen

19 April 2023

The FORMOSAT-7/COSMIC-2 satellites were launched in 2019, which can provide considerably larger amounts of radio occultation (RO) observations than the FORMOSAT-3/COSMIC satellites. The radio signals emitted from the global navigation satellites syst...

  • Article
  • Open Access
4 Citations
6,383 Views
19 Pages

We examine the role of democracy shocks in the cross-country economic growth processes over a period of five decades since 1960. The recent uprisings that arose independently and spread across the Arab world form the main context of our investigation...

  • Communication
  • Open Access
3 Citations
4,164 Views
14 Pages

10 January 2023

The technique of machine learning has been increasingly applied in numerical weather predictions. The aim of this study is to explore the application of a neural network in data assimilation by making use of the convenience in obtaining the tangent l...

  • Review
  • Open Access
34 Citations
6,068 Views
23 Pages

Persisting Vaccine Hesitancy in Africa: The Whys, Global Public Health Consequences and Ways-Out—COVID-19 Vaccination Acceptance Rates as Case-in-Point

  • Emmanuel O. Njoga,
  • Olajoju J. Awoyomi,
  • Onyinye S. Onwumere-Idolor,
  • Priscilla O. Awoyomi,
  • Iniobong C. I. Ugochukwu and
  • Stella N. Ozioko

15 November 2022

Vaccine hesitancy (VH) is the seventh among the WHO’s top 10 threats to global public health, which has continued to perpetuate the transmission of vaccine preventable diseases (VPDs) in Africa. Consequently, this paper systematically reviewed...

  • Article
  • Open Access
1 Citations
1,389 Views
18 Pages

24 December 2024

From a global ecological management perspective, as a core tree species in the mountain ecosystem of Xinjiang, the study of the spatial distribution characteristics of Picea schrenkiana var. tianschanica is crucial for maintaining the ecological bala...

  • Article
  • Open Access
18 Citations
3,502 Views
32 Pages

Atmospheric GNSS RO 1D-Var in Use at UCAR: Description and Validation

  • Tae-Kwon Wee,
  • Richard A. Anthes,
  • Douglas C. Hunt,
  • William S. Schreiner and
  • Ying-Hwa Kuo

7 November 2022

This paper describes, along with some validation results, the one-dimensional variational method (1D-Var) that is in use at the University Corporation for Atmospheric Research (UCAR) to retrieve atmospheric profiles of temperature, pressure, and humi...

  • Feature Paper
  • Article
  • Open Access
13 Citations
4,851 Views
17 Pages

Predicting Water Availability in Water Bodies under the Influence of Precipitation and Water Management Actions Using VAR/VECM/LSTM

  • Harleen Kaur,
  • Mohammad Afshar Alam,
  • Saleha Mariyam,
  • Bhavya Alankar,
  • Ritu Chauhan,
  • Rana Muhammad Adnan and
  • Ozgur Kisi

21 September 2021

Recently, awareness about the significance of water management has risen as population growth and global warming increase, and economic activities and land use continue to stress our water resources. In addition, global water sustenance efforts are c...

  • Article
  • Open Access
3 Citations
3,635 Views
20 Pages

21 September 2020

The feasibility of a hurricane initialization framework based on the Gridpoint Statistical Interpolation (GSI)-based four-dimensional ensemble-variational (GSI-4DEnVar) hybrid data assimilation system for the Hurricane Weather Research and Forecastin...

  • Article
  • Open Access
6 Citations
5,774 Views
16 Pages

The Accuracy of Risk Measurement Models on Bitcoin Market during COVID-19 Pandemic

  • Danai Likitratcharoen,
  • Nopadon Kronprasert,
  • Karawan Wiwattanalamphong and
  • Chakrin Pinmanee

4 December 2021

Since late 2019, during one of the largest pandemics in history, COVID-19, global economic recession has continued. Therefore, investors seek an alternative investment that generates profits during this financially risky situation. Cryptocurrency, su...

  • Article
  • Open Access
3 Citations
3,917 Views
23 Pages

Managing Meteorological Risk through Expected Shortfall

  • Silvana Stefani,
  • Gleda Kutrolli,
  • Enrico Moretto and
  • Sergei Kulakov

10 November 2020

This paper focuses on weather derivatives as efficient risk management instruments and proposes a more advanced approach for their pricing. An “hybrid” contract is introduced, combining insurance properties, specifically tailored for the...

  • Article
  • Open Access
1,809 Views
31 Pages

VARS and HDMR Sensitivity Analysis of Groundwater Flow Modeling through an Alluvial Aquifer Subject to Tidal Effects

  • Javier Samper,
  • Brais Sobral,
  • Bruno Pisani,
  • Alba Mon,
  • Carlos López-Vázquez and
  • Javier Samper-Pilar

5 September 2024

Groundwater flow and transport models are essential tools for assessing and quantifying the migration of organic contaminants at polluted sites. Uncertainties in the hydrodynamic and transport parameters of the aquifer have a significant effect on mo...

  • Article
  • Open Access
16 Citations
5,103 Views
20 Pages

17 July 2019

The rapid fluctuations in global crude oil prices are one of the important factors affecting both the sustainable development and the green transformation of the global economy. To accurately measure the risks of crude oil prices, in the context of b...

  • Article
  • Open Access
497 Views
33 Pages

15 December 2025

We show that financial integration in emerging Asia is state-dependent in the sense that cross-market linkages vary systematically across regimes of global uncertainty and market stress. Focusing on Indonesia, Malaysia, Singapore, Thailand, and Vietn...

  • Article
  • Open Access
5 Citations
2,529 Views
26 Pages

In this paper, we propose a new approach to analyze financial contagion using a causality-based complex network and value-at-risk (VaR). We innovatively combine the use of VaR and an expected shortfall (ES)-based causality network with impulse respon...

  • Article
  • Open Access
1 Citations
5,860 Views
49 Pages

Ripples of Global Fear: Transmission of Investor Sentiment and Financial Stress to GCC Sectoral Stock Volatility

  • Mosab I. Tabash,
  • Suzan Sameer Issa,
  • Marwan Mansour,
  • Azzam Hannoon and
  • Ştefan Cristian Gherghina

31 October 2025

This study analyzes how sectoral stock volatility in the GCC region responds to global financial uncertainty shocks originating from the U.S. (CBOE VIX), Europe (VSTOXX-50), Bitcoin investors’ Sentiment Indices (BSI), and disaggregated global F...

  • Article
  • Open Access
16 Citations
2,457 Views
34 Pages

Investigation of a Hybridized Cascade Trigeneration Cycle Combined with a District Heating and Air Conditioning System Using Vapour Absorption Refrigeration Cooling: Energy and Exergy Assessments

  • Larry Orobome Agberegha,
  • Peter Alenoghena Aigba,
  • Solomon Chuka Nwigbo,
  • Francis Onoroh,
  • Olusegun David Samuel,
  • Tanko Bako,
  • Oguzhan Der,
  • Ali Ercetin and
  • Ramazan Sener

7 March 2024

The insufficiency of energy supply and availability remains a significant global energy challenge. This work proposes a novel approach to addressing global energy challenges by testing the supercritical property and conversion of low-temperature ther...

  • Commentary
  • Open Access
1 Citations
3,748 Views
10 Pages

1 April 2024

The implementation of Video Assistant Referees (VARs) in 2018 has had a significant impact on the multi-billion-dollar soccer industry. As the most popular and watched sport globally, soccer’s financial stakes are high, with clubs, leagues, bro...

  • Article
  • Open Access
1 Citations
1,227 Views
10 Pages

2 January 2025

Globally, forest decline and tree mortality are rising due to climate change. As one of the important afforestation trees in northeast China, Pinus sylvestris var. mongolica is suffering from forest decline and the accompanying pests. Certain fungi f...

  • Article
  • Open Access
6 Citations
3,383 Views
13 Pages

24 January 2020

Photosynthesis by trees is expected to contribute to preventing climate change including global warming. However, the current levels of tropospheric ozone (O3) reduce the uptake of photosynthetic carbon dioxide (CO2) by forest trees in Japan, which i...

  • Proceeding Paper
  • Open Access
2,457 Views
8 Pages

Earth’s gravitational field provides invaluable insights into the changing nature of our planet. It reflects mass change caused by geophysical processes like continental hydrology, changes in the cryosphere or mass flux in the ocean. Satellite...

  • Proceeding Paper
  • Open Access
9 Citations
6,670 Views
9 Pages

Impact of Migration Processes on GDP

  • Olena Rayevnyeva,
  • Kostyantyn Stryzhychenko and
  • Silvia Matúšová

The globalization process and the war in Ukraine show us that migration is one of the strongest global trends in the modern economy. For this paper, we determined three types of migration, depending on the intention of the people involved, these bein...

  • Article
  • Open Access
527 Views
23 Pages

This paper analyzes the effectiveness of some defensive assets inside global stock portfolios by applying a standard VaR approach to daily data from 2021 to 2024. The 5Y US note is by far the best hedging instrument for single-hedged portfolios, whil...

  • Article
  • Open Access
8 Citations
4,457 Views
18 Pages

28 April 2022

The purpose of this publication is to quantify and compare the market risk on the external government debt of Kazakhstan and Bulgaria in the conditions of COVID-19, the emerging energy crisis, and the coup attempt in the first country. In particular,...

  • Article
  • Open Access
3 Citations
3,056 Views
11 Pages

The COVID-19 pandemic has had a substantial and far-reaching impact on global economic growth, extending its effects to Indonesia as well. Various sectors have witnessed a decline in stock returns as a consequence. Interestingly, the telecommunicatio...

  • Article
  • Open Access
12 Citations
4,570 Views
45 Pages

Coupled Stratospheric Chemistry–Meteorology Data Assimilation. Part II: Weak and Strong Coupling

  • Richard Ménard,
  • Pierre Gauthier,
  • Yves Rochon,
  • Alain Robichaud,
  • Jean de Grandpré,
  • Yan Yang,
  • Cécilien Charrette and
  • Simon Chabrillat

9 December 2019

We examine data assimilation coupling between meteorology and chemistry in the stratosphere from both weak and strong coupling strategies. The study was performed with the Canadian operational weather prediction Global Environmental Multiscale (GEM)...

  • Article
  • Open Access
8 Citations
3,538 Views
16 Pages

In Vivo Antidepressant-Like Effect Assessment of Two Aloysia Species in Mice and LCMS Chemical Characterization of Ethanol Extract

  • Teresa Taboada,
  • Nelson L. Alvarenga,
  • Antonia K. Galeano,
  • Wilfrido J. Arrúa,
  • Miguel A. Campuzano-Bublitz and
  • María L. Kennedy

13 November 2022

Medicinal plants belonging to the Verbenaceae family demonstrated antidepressant effects in preclinical studies. Depression is one of the largest contributors to the global health burden of all countries. Plants from the Aloysia genus are traditional...

  • Article
  • Open Access
21 Citations
4,091 Views
15 Pages

Biological Profiling of Essential Oils and Hydrolates of Ocimum basilicum var. Genovese and var. Minimum Originated from Serbia

  • Olja Šovljanski,
  • Anja Saveljić,
  • Milica Aćimović,
  • Vanja Šeregelj,
  • Lato Pezo,
  • Ana Tomić,
  • Gordana Ćetković and
  • Vele Tešević

18 September 2022

The genus Ocimum has many species that are used to treat diverse kinds of illnesses and sicknesses from ancient times. One of them, Ocimum basilicum L., commonly known as basil, has a vital role due to its various medicinal goods. It is best known as...

  • Article
  • Open Access
2 Citations
2,173 Views
18 Pages

More Accurate Climate Trend Attribution by Using Cointegrating Vector Time Series Models

  • David B. Stephenson,
  • Alemtsehai A. Turasie and
  • Donald P. Cummins

8 August 2023

Adapting to human-induced climate change is becoming an increasingly important aspect of sustainable development. To be able to do this effectively, it is important to know how much human influence has contributed to observed climate trends. Climate...

  • Article
  • Open Access
2 Citations
2,773 Views
15 Pages

18 September 2023

Thirty-one alpine species of Cortinarius (Agaricales, Cortinariaceae) were described from the alpine zone of the Alps during the second half of the XX century, by the Swiss mycologist Jules Favre, and by the French mycologists Denise Lamoure and Marc...

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