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EAFM of grouper in the Spermonde Islands, South Sulawesi, located in the UGGp Maros-Pangkep area
No full textThe Spermonde Islands, part of the Maros-Pangkep UNESCO Global Geopark, depend heavily on small-scale multi-gear demersal fisheries. This study assessed the sustainability of grouper fisheries using the Ecosystem Approach to Fisheries Management (EAFM) indicators across six domains (Fisheries Resources, Habitat and Ecosystems, Fishing Technology, Social, Economic, and Governance). Data were collected from ten target islands between October 2023 and January 2024. The results yielded an aggregate EAFM score of 61 (Good classification). However, a domain-level analysis revealed critical ecological vulnerabilities, with 'Fishery Resources' (score 48) and 'Fishing Technology' (score 50) falling into the Moderate category. While the fishery is economically profitable, it faces threats from overfishing, juvenile exploitation, and destructive fishing practices. Consequently, management interventions must prioritize strengthening law enforcement, protecting spawning aggregation sites, and enhancing stakeholder participation to ensure long-term sustainability. These findings provide a scientific basis for the improvement of the WPP 713 management plan
An Adaptive NRLF with PQV and P/Q Buses for Loss Minimization and Voltage Stability Improvement of Optimally Reconfigured and DG Integrated Radial Distribution Systems
No full textThis paper proposes an adaptive Newton Rapson Load Flow (NRLF) method and a multi-objective function for loss minimization and Voltage Stability (VS) enhancement of Radial Distributed System (RDS) in presence of PQV and P/Q buses. Enhancement in VS of the network is presented in terms of maximum loadability. In presence of two novel set of buses, generation bus (i.e. P/Q-bus) and remotely controlled bus (i.e. PQV-bus), optimal DG integration and network reformation in RDS is also presented in this paper. The specified or known quantity for the P/Q bus is only active/reactive power generation, and for the PQV bus the known quantities are Watt and VAr power generations together with voltage magnitude to be maintained by generation bus (i.e. P/Q-bus). A multi-objective function is proposed here for P/Q-bus selection, optimal DG integration and network reformation of RDS. Simulation has been carried out on IEEE 33-bus and 69-bus RDS to demonstrate the effectiveness of the proposed method. Also, the simulation findings are compared with relevant peers in the literature to justify the validity of the proposed work
The Essence of the Digital Society behind the Wuhan University Scandal——A Postmodernist Perspective
No full textRecently, the Wuhan University false accusation incident has gone viral online, sparking a wave of social discussions and derivative works. This paper argues that the incident and its subsequent developments are not merely a public opinion crisis, but rather a concentrated manifestation of the inherent contradictions and dilemmas within the evolution of the information society. Drawing upon Lacanian-Žižekian psychoanalysis, Foucaultian and Byung-Chul Han’s theories of power, and Baudrillard’s critique of simulacra, this paper offers an in-depth analysis of the Wuhan University incident and the underlying mechanisms of the information society. It further proposes preliminary solutions to address the existential crisis stemming from the nihilistic state of the information age
On modeling nonlinear phenomena under the influence of an electromagnetic field in a dense plasma
No full textThe quadratic response function (QRF) of a dense plasma in a constant magnetic field to an electromagnetic field is considered. To determine this function, a self-consistent model approach was applied based on the use of the quadratic fluctuation-dissipative theorem (FDT), frequency moments for the quadratic dense plasma reaction function, and explicit approximation for QRF with a fitting parameter. The conditions of using QRF for the interpretation of laboratory experiments on the study of nonlinear phenomena caused by the quadratic interaction of electromagnetic waves in a dense charged medium (Coulomb systems, plasma) in a constant magnetic field are discussed
The Role of Care Farms in Rural Revitalization: A Qualitative Study in Japan from the Managers' Perspective
No full textJapan's rural regions face intertwined challenges of farmland abandonment, labour shortages, and population decline, while people with disabilities encounter persistent barriers to employment and social participation. To investigate how care farming contributes to rural revitalization, we conducted a qualitative study using purposive sampling of 17 exemplary initiatives officially recognized by MAFF across eight regions. Data were collected through site visits, field observations, and semi-structured interviews with farm managers. Through inductive grounded theory coding in NVivo, five domains of impact emerged: (1) utilization of abandoned farmland, (2) agricultural experience and education, (3) branding and economic integration, (4) regional communication and coexistence, and (5) inheritance of traditional culture. While exemplary cases demonstrated how care farms can restore idle land, foster inclusive labour exchange, and revitalize local traditions, structural barriers persist. Most initiatives remain at early stages, constrained by legal restrictions, limited financial capacity, and insufficient staff training. This study redefines care farms not merely as welfare providers, but as “community resilience hubs” for rural communities' survival. This perspective distinguishes the Japanese model—driven by the urgency of depopulation—from frameworks focused solely on therapeutic outcomes or farm business viability. The study concludes that care farms act as hybrid institutions linking welfare, agriculture, economy, and culture, holding significant but unevenly realized potential to sustain rural communities as a vital defensive mechanism under demographic pressure
Agricultural Carbon Emission Efficiency and Its Driving Forces: NDDF Measurement, Malmquist Decomposition, and Convergence Evidence from China’s Counties
No full textThis paper evaluates agricultural carbon emission efficiency (ACEE) at China's county level during 2021–2024. Quantitatively, mean ACEE rises from 0.617 in 2021 to 0.678 in 2024, while dispersion narrows (σ of ln(ACEE): 0.124→0.110, −11.3%). Malmquist results indicate persistent productivity gains (ML>1 in all adjacent periods), with technical change weakening (TC: 1.025←1.012) and efficiency catchup remaining stable (EC≈.04). A non-radial directional distance function (NDDF) with undesirable outputs is applied to jointly consider agricultural output, input use, and carbon emissions. Dynamic changes are assessed using a Malmquist productivity index decomposed into efficiency change and technical change, while σ-convergence and β-convergence tests are conducted to evaluate catch-up patterns. A two-way fixedeffects panel model is further used to identify key drivers of ACEE. Results suggest that mean ACEE increased steadily and dispersion declined, indicating both performance improvement and narrowing gaps across counties. Technological progress was the primary contributor in the early stage, whereas efficiency catch-up gained importance later. Farm scale, mechanization, and digital adoption are positively associated with ACEE, while fertilizer intensity and rapid urbanization exert negative impacts. Policy implications emphasize precision input management and differentiated regional technology diffusion
The effect of steel hollow section size on flexural capacity and ductility of truss reinforced concrete beams
No full textThis research aims to evaluate the effect of variations in steel hollow section size on flexural capacity and ductility of concrete beams reinforced with steel truss. In line with these findings, three concrete beam specimens with the same cross-sectional size, namely 150 mm x 700 mm, and a length of 2000 mm, were prepared. Beams were reinforced with trusses made of mortar-filled hollow sections of three different sizes. The load was applied using the central loading method at mid-span. The main parameters observed included crack patterns, flexural capacity, bending moment-displacement relationship, and ductility index. The test results showed that increasing steel hollow section size significantly contributed to improving flexural capacity and stiffness of beams. However, the increase in steel hollow section size was not directly related to increasing ductility. These findings confirm that variations in steel hollow section dimensions directly affect the structural behavior of concrete beams, making it a viable alternative reinforcement method, effective and applicable in building and infrastructure construction
Geospatial analysis of the Khorezm oasis in terms of its vegetation cover and the impact of vegetation criteria on the desertification process
No full textDesertification is one of the main environmental problems in arid and semi-arid regions such as the Khorezm oasis. Desertification directly affects soil fertility and the living standards of local residents. In this study, we studied the role of vegetation cover in the desertification process in the Khorezm oasis. We analyzed vegetation characteristics using Sentinel-2 satellite data. Based on these indicators, we developed a Vegetation Quality Index (VQI) to assess vegetation cover, drought tolerance, erosion protection, and drought risk across the study area. The results of our study showed that vegetation degradation is spatially unevenly distributed across the oasis. Approximately 16.07% of the buffer zone and 4.71% of the oasis were identified as areas with very high desertification risk in terms of vegetation cover density. The drought resilience analysis showed that 40.17% of the oasis is moderately vulnerable, indicating the need for targeted measures for effective land management. Areas with relatively high erosion risk accounted for 41% of our study area, while fire risk was limited, with 3.2% of the oasis area identified as high risk
Sustainable Cultural Behavior and Environmental Awareness: The Case of Joss Paper Burning in Vietnam
No full textThis research applies the Theory of Planned Behavior (TPB) to identify the psychological and social determinants influencing the intention to burn joss paper in District 5, Ho Chi Minh City. The study employs a quantitative method using a structured questionnaire administered to 150 respondents. The instrument measures four constructs: Attitude, Subjective Norms, Perceived Behavioral Control and Behavioral Intention. Data were analyzed through reliability testing (Cronbach's Alpha), Exploratory Factor Analysis (EFA) and Multiple Regression. Results indicate that Subjective Norms have the strongest influence on Behavioral Intention (β = 0.555), followed by Attitude (β = 0.384) and Perceived Behavioral Control (β = 0.198), with an explanatory power of 73.5% (R2 = 0.735). The findings emphasize that social expectations and community norms are decisive factors driving ritual behavior. Recommendations highlight the need for communication strategies and cultural reinterpretation that promote spiritual sincerity while reducing ritual excess