bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analysis of Carbon Emission Impact Factors and Trend Prediction Based on LMDI and ARIMA Models: A Case Study of Zhejiang Province
Authors: Zhang Peng , Mu Junbo , Luo Jie 
Published: November 2024

AbstractThe present study proposed a method to examine the carbon emissions of various departments in Zhejiang Province from 2003 to 2020 using the IPCC sectoral method. The use of the LMDI model analyzed the factors that influence carbon emission change in Zhejiang Province. The ARIMA prediction model and grey prediction model are utilized to forecast carbon emissions of Zhejiang Province in the future. The proposed measures for carbon emission reduction in Zhejiang Province are given, and some reference basis is provided for similar provinces to carry out low-carbon transformation. The results demonstrated that: (1) The carbon emission of Zhejiang Province from 2003 to 2020 shows a linear increase trend, with a growth rate of 172% during the 18 years. (2) The energy structure of Zhejiang Province is developing towards energy cleanliness. (3) Energy intensity and industrial structure are inhibiting effects, economic output and population size are promoting effects, and energy structure has both inhibiting and promoting times. (4) ARIMA’s prediction of carbon emissions in Zhejiang Province in the next few years is more accurate than that of the grey prediction model. The prediction results of ARIMA show that Zhejiang Province will usher in the carbon peak in 2025, while the grey prediction results show that it will not usher in the carbon peak before 2027.
Organic Waste Management in Tasikmalaya City, Indonesia
Authors: Jupesta Joni , Permana Indra 
Published: November 2024

AbstractWaste sector remains the largest contributor to urban greenhouse gas (GHG) emissions after the energy sector in the city level. This study aims to assess the potential of circular economy by using Black Soldier Fly (BSF) as organic agent to processing the organic waste to the value-added products fish meal and organic fertilizer in the city. The study has been conducted at organic waste management site affiliated with the Tasikmalaya City. The harvesting process for the BSF larvae (BSFL) was conducted while the co-products BSFL frass and BSFL skin were analyzed in the laboratory to determine its chemical characteristics. The result of the study shows that in average 8.33 kg BSFL has been produced from 25 kg organic waste feedstock. The highest organic carbon content was shown in the mixture of BSFL frass and skin with a value of 15.6% and followed by the BSFL frass and BSFL skin samples independently with values of 12.8% and 10.5% respectively. All maggot residues showed similar pH ranging at 6.3–6.5. The mixture of BSFL frass and BSFL skin had a higher total N content compared to only BSFL frass or BSFL skin with respective values of 5.8%, 5.2% and 2.6%. The total P2O5 content in all treatments shown almost similar values range from 3.55%, 3,12%, and 3.55% for BSFL frass, BSFL skin and the mixture of BSFL frass and BSFL skin respectively. However, the total K2O shown big discrepancy with value 1.42%, 0.53%, and 0.85% for BSFL frass, BSFL skin and mixture of BSFL frass and skin respectively. This study shown that the GHG emissions from waste in the Tasikmalaya city could be reduces by utilize organic agent such as BSF. This circular economy could create high economic value products such as BSF larvae (maggot) and co products BSFL frass and BSFL skin.
Evaluation of Social Value in Urban Parks Through Implementation of SolVES Model in Mianyang People’s Park
Authors: Zeng Mingying , Ma Qian , Gan Kar Kheng , Chen Zhanglei 
Published: November 2024

AbstractUrban parks bring multiple benefits in terms of ecology, economy, culture, and well-being. While evaluation of the ecosystem service value is conducive to integrating urban functions and green space, a lack of human-nature interactions leads to neglect in knowledge and assessment of the social value of urban parks. In this study, Visitor Employed Photography (VEP) and the Social Value of Ecosystem Services (SolVES) model were utilized to connect visitors’ immediate perceptions with landscape elements, subjective will, and the geographical environment. This approach aimed to assess the social value of parks and quantify the public’s preferences in landscape layout. The results compare the relative importance of nine social values and verify that different environmental variables affect types of value indices. It is observed that the public is particularly aware of the social value generated by good planting and landscaping, as well as by proximity to water. In addition, the type of environmental landscape also has a crucial impact on perceptions. Bodies of water, characteristic landscapes, and well-maintained convenient roads emerge as key elements in people’s landscape preferences. The conclusions drawn from this study provide useful information for park management and landscape planning, particularly from the perspective of social value growth. Most importantly, they serve as a reference for future research.
Optimization of Spatial Layout of Community Elderly Care Facilities Based on POI Data in Fucheng District
Authors: Du Xiaoge , Wang Yu , Li Yaling 
Published: November 2024

AbstractCommunity elderly care facilities, as significant facilities for maintaining the health of the elderly and supplementing family care, are a vital component of the construction of urban elderly care service systems. Reasonable layout of elderly care facilities can improve the efficiency of elderly care resource utilization and is of great importance for accelerating high-quality progress of elderly care. Taking 7 administrative streets in Fucheng District of Mianyang City as the research area, through analyzing the current situation of community elderly care facilities, it is found that the overall number of elderly care facilities in Fucheng District is insufficient, and the distribution of high in the east and low in the periphery is uneven. Half of the residential areas and elderly people are not in the service area, and there are obvious loopholes in the coverage of community elderly care facilities in the study region. Combined with the actual residential points and spatial layout of functional facilities in the research area, the location allocation model was used to optimize the layout of community elderly care facilities, and finally 20 new community elderly care facilities are determined. The optimization results can meet the convenient travel of most elderly people, basically meet the requirements of the urban community “15-min elderly care service circle”, and finally construct the community elderly care service facility network, in order to achieve a balanced and efficient layout of community elderly care facilities in Fucheng District.
Applying Numerical Simulation to Identify the Suitable Block Scale for Improving Air Quality Inside Urban Streets
Authors: Liu Wen , Huang Zhengdong , Sun Maopeng , Zhang Hongliang , Zhao Fuyun , Guo Renzhong 
Published: November 2024

AbstractRapid urbanization-induced poor ventilation makes it difficult for urban built-up environments to breathe fresh air and purify pollutants. Meanwhile, vehicle exhaust is emitted into urban streets and spread to nearby residential neighborhoods, severely threatening both the environmental quality of street space and the well-being of citizens residing adjacent to the road. The numerical simulation validated by wind tunnel measurements was adopted to examine the effects of the block scale (i.e. street length) on natural ventilation and exhaust pollutant dispersion within urban street canyons. The findings are as follows: (1) the airflow regime inside the street canyon is determined by the interaction of a canyon vortex at the middle and corner eddies at the ends, leading to notably elevated pollutant concentrations on its leeward and mid-section than on its windward and laterals; (2) the induced corner vortices at street ends can drive ambient pollutants toward the middle of the street canyon and subsequently be carried out by the canyon vortex, however there is a limit to this effect, which varies depending on the length of the street canyon with constant aspect ratio; (3) a proper block scale (street length) ranging from 200 m to 400 m is recommended, which could be used to strike a favorable balance between environmentally improving urban street air quality and morphologically creating a vibrant public space. Numerical simulation-based design strategies can be utilized to optimize existing urban design guidelines for creating a desirable scale in practical urban planning and construction.
A Framework of Urban Renewal for Leisure Space in Neighborhood Streets: A Case Study of Shazheng Street in Chongqing, China
Authors: Li Yiqun , Cheshmehzangi Ali , He Bao-Jie 
Published: November 2024

AbstractUrban street spaces serve as a platform for fulfilling people's travel requirements and facilitating complicated and diverse social interactions. In this context, leisure spaces play a crucial role in urban streets. Nevertheless, with the acceleration of urbanization, the current design of street leisure space generally has problems of low quantity, inferior quality, and lack of humanism, which can not meet the needs of people’s rest and communication in the street space. This study applied environmental psychology and typology theories, selected Shazheng Street in Chongqing as the research object， explored the link between the urban street environment and leisure behavior, and proposed a practical and effective design framework for the renewal of neighborhood street leisure spaces. The design framework first analyzes the current status of street leisure space in terms of the general street layout, the building interface along the street, and the structure of sidewalk cross-sections, and then discusses where leisure spaces can be designed for different structures of sidewalk cross-sections, as well as the types and characteristics of existing rest facilities. Then, we creatively combined the Baidu heat map data analysis, which investigates the vitality of a wide range of streets, with behavioral mapping and questionnaires, which accurately investigate people's needs, to investigate people’s leisure needs accurately through the mutual validation of the results. Finally, we proposed zoning design strategies based on an analysis of the current situation and leisure needs. The findings of this study can serve as a reference for future renewal and design projects.
Data-Driven Urbanism: Image Processing Techniques for Urban Analytics
Authors: Al-Obaidi Karam M. , Wang Jing , Hossain Mohataz 
Published: November 2024

AbstractGeographic databases provided by open and public sources lack a high degree of accuracy. Although these sources were developed by collecting data from surveys, tracing from aerial imagery and freely licensed geodata sources, their reliability is questionable in testing new concepts for urban analytics and developing solutions for City Information Modelling (CIM). This study aims to examine a method using digital image processing to deliver precise information and accurate data for urban analytics. The research applied algorithmic solutions using content-based image segmentation, which accurately segments roof regions of buildings from aerial images. The study utilised an open access dataset annotated using 72 images grouped into 6 larger tiles from a joint project between Humans in the Loop with the Mohammed Bin Rashid Space Centre in Dubai, the UAE. The results show the efficiency of extracting buildings and their detailed features in an urban context. Finally, the study demonstrates the reliability of using the Base UNet model and the ResNet-based UNet, in analyzing urban aerial images.
Health-Oriented Walkability Measurement and Enhancement Strategies for Life Circle
Authors: Xie Mingfeng , Wang Yu 
Published: November 2024

AbstractWalkability is an important characterization of the degree of pedestrian friendliness in cities, and is also an important element of healthy urban planning. However, due to the heat island effect and climate warming, the poor thermal comfort of walking in summer has seriously hindered residents’ willingness to walk. In this paper, we take Nanhe Community 15-min living circle in Mianyang City, Sichuan Province as an example, simulate the thermal environment in the living circle in summer through ENVI-met software, and calculate the walkability based on the walk score, and simulate the identification of the thermal environment and walkability condition of the living circle. The results show that the overall thermal environment in the study area is poor, especially in the residential and commercial areas where buildings are concentrated, which affects the residents’ willingness to travel, while the thermal environment at the edge of the study area is relatively good due to the factors such as the river. By combining the thermal environment simulation and walkability simulation results, the high walkability-low thermal comfort spaces and low walkability-high thermal comfort spaces are identified. Optimization strategies are proposed for these two types of spaces, in order to provide guidance for the improvement of walkability in the living area.
Characteristics of Climate Element Changes and Mango Planting Climate Suitability Changes in Panxi Region Under Global Warming
Authors: Yin Xuemei , He Ke , Chen Dongdong , Li Xuan , Li Yuzhu , Wang Mingtian 
Published: November 2024

AbstractBased on the observation data of 32 meteorological stations in Panxi and surrounding areas from 1961 to 2020 and Digital Elevation Model (DEM) data, the climate suitability zoning indicators for mango planting in Panxi region are comprehensively determined. Using linear trend analysis and regression methods, a grid calculation model for zoning indicators is established to analyze the changes in zoning indicators and the suitability of mango planting in Panxi region during the two periods of 1961–1990 and 1991–2020. The results show that the annual average temperature, ≥ 10℃ accumulated temperature, and overwintering average temperature in Panxi region show a high in the south and low in the north characteristic, increasing or adding at a rate of 0.2℃/10a, 86℃∙d/10a, 0.3℃/10a respectively; the sunshine duration is generally distributed in a zonal pattern, increasing at a rate of 16.3h/10a. The main mango planting areas in Panxi region are concentrated in the southwest, the suitable areas are mainly distributed in the central part of Panzhihua City, the sub-suitable areas are mainly located in the central and southern parts of Panzhihua City and Huili City, and the unsuitable areas are mainly concentrated in the central and northern parts. After 1990, the area of suitable climate for mango planting in Panxi region increased by 21.55 × 102 km2, an increase of 3.2%; the area of sub-suitable area increased by 50.96 × 102 km2, an increase of 7.5%; the area of unsuitable area decreased by 72.51 × 102 km2, a decrease of 10.7%. The highest altitude of the suitable area increased by 161m, the highest altitude of the sub-suitable area increased by 221m, the suitable range moved to high-altitude areas, the planting boundary moved northward, and global warming is generally beneficial to mango planting in Panxi.
Research on the Resilience Transformation Strategy of Quarantine Hotels and Concentrated Quarantine Points Under Public Health Emergencies
Authors: Lin Chang , Li Yuxi , Huang Haitian 
Published: November 2024

AbstractThis paper explores the resilience transformation of quarantine hotels and concentrated quarantine points in public health emergencies for optimized medical space usage, employing a mixed-methods approach that combines case studies and qualitative analysis. During the COVID-19 pandemic, traditional medical facilities experienced significant pressures on space and resources, underscoring the need for resilience in non-traditional medical spaces. By analyzing specific quarantine hotels and points, we identify and implement transformation measures including design adjustments, functional layout optimization, and clean/dirty zoning. These strategies significantly enhance medical resource efficiency and reduce cross-infection risks. Our findings indicate that such transformations not only improve immediate pandemic response capabilities but also bolster the overall resilience of public health systems against future crises.
The Construction of Doctor-Patient Relationship Based on Convergence Media Under Major Public Health Events
Authors: Ding Yanfei , Zhang Yifei 
Published: November 2024

AbstractAs the main body of epidemic prevention and control, public hospitals are more professional, authoritative and credible. They are important participants and main parts of epidemic prevention and control propaganda. The doctor-patient relationship was once unprecedented harmonious. On this basis, the trust established is more stable, so how to build a long-term and good doctor-patient interaction based on this trust in the post-epidemic era is an important way to build the social reputation of the current public hospitals. To maintain and consolidate this harmonious relationship, the convergence media still have a great research space and broad practice platform in top-level design, agenda setting, channel development and ethical self-discipline of practitioners. Based on the interactive paradigm of convergence media and the new model of Internet medical treatment, this paper explores a new model in line with China’s national conditions, namely, “filial piety relationship model”, which is of great significance to the long-term maintenance of harmonious and friendly medical relations.
Generalized symmetries in 2D from string theory: SymTFTs, intrinsic relativeness, and anomalies of non-invertible symmetries
Authors: Franco Sebastián , Yu Xingyang 
Published: November 2024

Abstract
Generalized global symmetries, in particular non-invertible and categorical symmetries, have become a focal point in the recent study of quantum field theory (QFT). In this paper, we investigate aspects of symmetry topological field theories (SymTFTs) and anomalies of non-invertible symmetries for 2D QFTs from a string theory perspective. Our primary focus is on an infinite class of 2D QFTs engineered on D1-branes probing toric Calabi-Yau 4-fold singularities. We derive 3D SymTFTs from the topological sector of IIB supergravity and discuss the resulting 2D QFTs, which can be intrinsically relative or absolute. For intrinsically relative QFTs, we propose a sufficient condition for them to exist. For absolute QFTs, we show that they exhibit non-invertible symmetries with an elegant brane origin. Furthermore, we find that these non-invertible symmetries can suffer from anomalies, which we discuss from a top-down perspective. Explicit examples are provided, including theories for Y(p,k)(ℙ2), Y(2,0)(ℙ1 × ℙ1), and ℂ4/ℤ4 geometries.
Crescendo beyond the horizon: more gravitational waves from domain walls bounded by inflated cosmic strings
Authors: Bao Yunjia , Harigaya Keisuke , Wang Lian-Tao 
Published: November 2024

Abstract
Gravitational-wave (GW) signals offer a unique window into the dynamics of the early universe. GWs may be generated by the topological defects produced in the early universe, which contain information on the symmetry of UV physics. We consider the case in which a two-step phase transition produces a network of domain walls bounded by cosmic strings. Specifically, we focus on the case in which there is a hierarchy in the symmetry-breaking scales, and a period of inflation pushes the cosmic string generated in the first phase transition outside the horizon before the second phase transition. We show that the GW signal from the evolution and collapse of this string-wall network has a unique spectrum, and the resulting signal strength can be sizeable. In particular, depending on the model parameters, the resulting signal can show up in a broad range of frequencies and can be discovered by a multitude of future probes, including the pulsar timing arrays and space- and ground-based GW observatories. As an example that naturally gives rise to this scenario, we present a model with the first phase transition followed by a brief period of thermal inflation driven by the field responsible for the second stage of symmetry breaking. The model can be embedded into a supersymmetric setup, which provides a natural realization of this scenario. In this case, the successful detection of the peak of the GW spectrum probes the soft supersymmetry breaking scale and the wall tension.
Non-planar corrections in ABJM theory from quantum M2 branes
Authors: Giombi Simone , Kurlyand Stefan A. , Tseytlin Arkady A. 
Published: November 2024

Abstract
The quantization of semiclassical strings in AdS spacetimes yields predictions for the strong-coupling behaviour of the scaling dimensions of the corresponding operators in the planar limit of the dual gauge theory. Finding non-planar corrections requires computing string loops (corresponding to torus and higher genus surfaces), which is a challenging task. It turns out that in the case of the Uk(N) × U−k(N) ABJM theory there is an alternative approach: one may semiclassically quantize M2 branes in AdS4 × S7/ℤk which are wrapped around the 11d circle of radius 1/k = λ/N . Such M2 branes are the M-theory generalization of the strings in AdS × CP3. In this work, we show that by expanding in large M2 brane tension T2 ~ $$ \sqrt{kN} $$

kN

for fixed k, followed by an expansion in large k, we can predict the large λ asymptotics of the non-planar corrections to the dimensions of the dual ABJM operators. As a specific example, we consider the M2 brane configuration that generalizes the long folded string with large spin in AdS4, and compute the 1-loop correction to its energy. This calculation allows us to determine non-planar corrections to the universal scaling function or cusp anomalous dimension. We extend our analysis to the semiclassical M2 branes that generalize the “short” and “long” circular strings with two equal angular momenta in CP3. The “short” M2 brane corresponds to a dual operator whose dimension at strong coupling scales as ∆ ∼ λ1/4 + …, and we derive the leading non-planar correction to it.
Mellin amplitudes for AdS3 × S3
Authors: Behan Connor , Pitombo Rodrigo S. 
Published: November 2024

Abstract
There are holographic superconformal theories in all dimensions between two and six which allow arbitrary tree-level four-point functions to be fixed by basic consistency conditions. Although Mellin space is usually the most efficient setting for imposing these contraints, four-point functions in two dimensions have thus far been an exception due to their more intricate dependence on the conformal cross-ratios. In this paper, we introduce a simple fix which exploits the relation between a parity-odd conformal block in two dimensions and a parity-even conformal block in four dimensions. We then apply the resulting toolkit to a study of the paradigmatic holographic theory in two dimensions which is the D1-D5 CFT. For correlators involving Kaluza-Klein modes of the tensor multiplet, this analysis reproduces results which were previously obtained using hidden conformal symmetry. With four Kaluza-Klein modes of the graviton multiplet, it yields new results including a compact formula for the correlators of all pairwise identical operators.