In this paper, we study and discuss existence and continuity of solution to complex Hessian equation
(
χ
+
d
d
c
·
)
k
∧
ω
n
-
k
=
c
f
ω
n
on Hermitian manifold
(
X
,
ω
)
, where
χ
is some smooth ...real
(
1
,
1
)
-
form in
X
and Hermitian form
ω
satisfies that at every given point on
X
, there exist a local chart
Ω
and a smooth real-valued function
G
such that
e
G
ω
is a Kähler form on
Ω
.
Sustainable investing allocates investments based on environmental, social and governance factors (ESG). The societal value of sustainable investment is becoming progressively relevant as investors ...are increasingly recognizing the importance of investing in companies that seek to combat climate change, environmental destruction, while promoting corporate responsibility. Environmental policy and sustainable growth initiatives at a country-level are also being influenced by the UN’s Sustainable Development Goals (SDGs). Situated within the current trend of declining foreign direct investment flows (FDI), our study examines the role of ESG factors in attracting FDI and enabling progress toward SDGs. We econometrically examine the linkages between ESG and FDI inflows for a sample of 161 counties. We also focus on low- and middle-income emerging economies and low- and middle-income commodity exporters as these countries face unique challenges of mobilizing financing to achieve SDGs and generating sustainable economic growth. Results suggest that FDI inflows to the full sample of countries are positively attracted by good governance in a destination country. We observe that good scores on HDI deters FDI, that higher FDI flows are associated with higher levels of carbon emissions in the case of emerging markets. Sustainability reporting attracts FDI to commodity exporting countries. The study provides possibilities for future research in a post-pandemic future.
Landslides lead to widespread devastation and significant loss of life in mountainous regions around the world. Susceptibility assessments can provide critical data to help decision‐makers, for ...example, local authorities and other organizations, mitigating the landslide risk, although the accuracy of existing studies needs to be improved. This study aims to assess landslide susceptibility in the Thua Thien Hue province of Vietnam using deep neural networks (DNNs) and swarm‐based optimization algorithms, namely Adam, stochastic gradient descent (SGD), Artificial Rabbits Optimization (ARO), Tuna Swarm Optimization (TSO), Sand Cat Swarm Optimization (SCSO), Honey Badger Algorithm (HBA), Marine Predators Algorithm (MPA) and Particle Swarm Optimization (PSO). The locations of 945 landslides occurring between 2012 and 2022, along with 14 conditioning factors, were used as input data to build the DNN and DNN‐hybrid models. The performance of the proposed models was evaluated using the statistical indices receiver operating characteristic curve, area under the curve (AUC), root mean square error, mean absolute error (MAE), R2 and accuracy. All proposed models had a high accuracy of prediction. The DNN‐MPA model had the highest AUC value (0.95), followed by DNN‐HBA (0.95), DNN‐ARO (0.95), DNN‐Adam (0.95), DNN‐SGD (0.95), DNN‐TSO (0.93), DNN‐PSO (0.9) and finally DNN‐SCSO (0.83). High‐precision models have identified that the majority of the western region of Thua Thien Hue province is very highly susceptible to landslides. Models like the aforementioned ones can support decision‐makers in updating large‐scale sustainable land‐use strategies.
Hybrid machine learning algorithms were applied for landslide susceptibility modelling.
Flood risk is a significant challenge for sustainable spatial planning, particularly concerning climate change and urbanization. Phrasing suitable land planning strategies requires assessing future ...flood risk and predicting the impact of urban sprawl. This study aims to develop an innovative approach combining land use change and hydraulic models to explore future urban flood risk, aiming to reduce it under different vulnerability and exposure scenarios. SPOT-3 and Sentinel-2 images were processed and classified to create land cover maps for 1995 and 2019, and these were used to predict the 2040 land cover using the Land Change Modeler Module of Terrset. Flood risk was computed by combining hazard, exposure, and vulnerability using hydrodynamic modeling and the Analytic Hierarchy Process method. We have compared flood risk in 1995, 2019, and 2040. Although flood risk increases with urbanization, population density, and the number of hospitals in the flood plain, especially in the coastal region, the area exposed to high and very high risks decreases due to a reduction in poverty rate. This study can provide a theoretical framework supporting climate change related to risk assessment in other metropolitan regions. Methodologically, it underlines the importance of using satellite imagery and the continuity of data in the planning-related decision-making process.
This case study used anthropological and culture concept methodologies to evaluate the perceptions of sustainable coffee production of the K’Ho ethnic minority in Di Linh district, Lâm Đồng province ...in the Central Highlands of Vietnam. Sustainable production is a means of mitigating the increasing impacts of climate change upon the region. The Central Highlands is a major coffee production hub and Di Linh is the largest coffee growing region of Lâm Đồng province. The case study included in-depth interviews with farmers based on open-ended questions and a questionnaire about sustainable coffee indicators. The survey invited farmers to quantify the current status of their social, economic, and environmental sustainability. Our study revealed that the unique, government sponsored development of coffee farms led to fast production rates and quick economic prosperity. But, it also resulted in a prolonged monoculture system of coffee production and high chemical use; causing farm productivity to decline and social, economic, and environmental vulnerability to increase. The K’Ho farmers in a small village are noticing the devastating long-term effects of agrochemicals, but have had some initial success exploring the potential benefits of reverting to traditional farming methods.
In this paper, we prove the existence and investigate the Hölder continuity of solutions to the Dirichlet problem of the complex Monge-Ampère type equation on a bounded strictly pseudoconvex domain Ω ...in Cn.
In the paper, we prove the existence of weak solutions of the complex
m
-Hessian type equation for arbitrary nonnegative Radon measures on an open subset
Ω
of
C
n
.
Coffee is highly vulnerable to climate change, thus impacting coffee-dependent livelihoods and economies. As rising temperatures continue to reduce the suitability of many historical coffee-growing ...regions, some farmers are practicing regenerative, organic coffee farming as a means of climate change mitigation. In the Central Highlands, the primary coffee growing region of Vietnam, conventional sun-grown, monocrop coffee requires intensive inputs, including fertilizers, pesticides and water. However, some farmers are converting their conventional sun farms to organic shade farms utilizing regenerative farming techniques for both environmental and economic reasons. This study examined regenerative farming practices and sustainable coffee in a small ethnic minority village in Lâm Ðồng province. The comparative analysis between soil samples taken from a regenerative shade-grown coffee farm and two conventional sun-grown coffee farms revealed that the soil of the regenerative farm, enriched with organic manure, is comparable to, or healthier than, the soil on the conventional farms enriched with chemical fertilizers. The results indicate that regenerative farming practices promote biodiversity; however, they also maintain microclimates that promote the growth of Roya fungus, which can decrease coffee yields. The economic analysis of farm costs and net returns found that regenerative farming practices decrease external inputs through a system of crop diversification and integrated livestock production that improves productivity and economic performance while preserving the ecological and environmental integrity of the landscape. Regenerative agriculture is an important step toward climate change adaptation and mitigation; however, in order for the farm communities in the Central Highlands to make the transition to regenerative agriculture, the success factors and benefits of this method must be demonstrated to the coffee farmers.
In the paper, we prove the existence of weak solutions of the complex
m
-Hessian type equation on an open subset
Ω
of
C
n
. In the end of the paper, we give a result related to the complex 1-Hessian ...type equation in the unit ball of
C
2
.
In Vietnam, an estimated 256,000 people are living with HIV, and 58% of HIV-infections reported are among people who inject drugs (PWID). While antiretroviral therapy (ART) is widely available in ...Vietnam, marginalized hard-to-reach male PWID, demonstrate significantly reduced and delayed access to ART.
We investigated the effect of a randomized four-arm multi-level intervention trial on ART initiation among male PWID. Our analysis was conducted among a subset of trial participants (n = 136), who were newly diagnosed as HIV-infected, treatment naïve, and eligible for ART (baseline late diagnosis). The trial arms included: 1, standard of care (HIV testing and counseling); 2, structural-level intervention (door-to-door communications and community video screenings); 3, individual-level intervention (counseling plus group support); and 4, individual-level plus structural-level intervention. In a time-to-event analysis, we used a non-parametric approach for competing risks to estimate cumulative incidence function (CIF) for ART initiation (event of interest) by arm and the difference in CIF for each trial arm as compared to Arm 1. Follow-up was conducted at 6, 12, 18 and 24 months. Data collection occurred from 2009 to 2013.
By 24-months, 61.0% initiated ART, and 30.9% had died prior to ART initiation. In the first 6 months, participants in arm 4 (individual plus community intervention) had a 28% (95% confidence interval (CI): 6-50%) increased probability of initiating ART. Despite increasing coverage of ART in all arms throughout follow-up, participants in arm 4 retained a 31% (95% CI: 5-56%) increased probability of initiating ART. The individual and community components of the intervention were only effective when delivered together.
Marginalized, hard-to-reach men, who do not routinely engage in HIV services, and therefore come into care late, may benefit significantly from both individual counseling and group support, in combination with community-focused stigma reduction, when being referred and attempting to initiate urgently needed ART.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
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