Economic Center Research Articles

An evaluation of financial statement quality in pre-versus post-IFRS-7 implementation: the case of Iraqi banking industry

This study compares Iraqi banking financial statements before and after IFRS-7 financial instruments disclosure. “Nijmegen Centre for Economics (NiCE)” qualitative content analysis was used to assess financial statement quality, which was measured using NiCE disclosure index. This study analysed data using a paired sample test to meet its goals. After IFRS-7, financial reporting quality is represented by 2016–2018. Before IFRS-7, it was represented by 2013–2015. In addition, the OLS regression analysis was implemented to assess hypotheses, incorporating data from 24 Iraqi institutions. The univariate analysis (t-test) and OLS regression showed that IFRS-7 improves financial statement “relevance, faithful representation, comparability, and timeliness”. No correlation was found for “understandability”. This study is the first to use Iraqi data and the most recent disclosure index to test the relationship between financial figure quality before and after applying the IFRS-7 financial instruments disclosure standard in developing countries. The results help regulators and policymakers regulate IFRS in Iraq and suggest policy changes to ensure compliance. The findings have major implications for business and policy that executives, lawmakers, and stockholders should consider. This study is applicable to ME countries that share comparable institutional, cultural, and accounting framework characteristics.

Assessment of Heavy Metals (Cr, Cu, Pb, and Zn) Bioaccumulation and Translocation by Erigeron canadensis L. in Polluted Soil

This work aims to assess the bioavailability and bioaccumulation of Cr, Cu, Pb, and Zn in the soil–plant system (Erigeron canadensis L.) in the zone of anthropogenic impact in Dnipro city, a significant industrial and economic centre of Ukraine. Sampling was carried out at three locations at distances of 1.0 km, 5.5 km, and 12.02 km from the main emission sources associated with battery production and processing plants in Dnipro. The concentrations of heavy metals such as Cr, Cu, Pb, and Zn were analysed using atomic emission spectrometry from soil and parts of Erigeron canadensis L. The highest concentrations of elements in the soil, both for the mobile form and the total form, were determined to be 48.96 mg kg−1 and 7830.0 mg kg−1, respectively, for Pb in experimental plot 1. The general ranking of accumulation of elements in all experimental plots, both for the plant as a whole and for its parts, was as follows: Zn > Cu > Cr > Pb. Zn for plants was the most available heavy metal among all studied sites and had the highest metal content in the plant (339.58 mg kg−1), plant uptake index (PUI-506.84), bioabsorption coefficient (BAC-314.9), and bioconcentration coefficient (BCF-191.94). According to the results of the study, it is possible to evaluate Erigeron canadensis L. as a hyperaccumulator of Zn, Cu, and Cr and recommend it for phytoextraction of soils contaminated with Zn, Cu, and Cr and phytostabilization of soils contaminated with Pb.

Segregated by whom? Examining triple neighbourhood disadvantages and activity spaces in Seoul, South Korea

This study explores the potential mechanisms by which neighbourhood isolation is created and reinforced in non-home activity locations. The existing discussion on neighbourhood isolation, its consequences, and the subsequent reproduction of interactions between individuals and their environment has focused on their residential locations. However, the vitality of a neighbourhood depends not only on its own socioeconomic conditions but also on the conditions of the other neighbourhoods its residents visit and are visited by. Residential locations are only one of the many spaces in which individuals engage in their activities; therefore, to fully comprehend people’s everyday experiences of integration and isolation, it is imperative to look at interactions within both home and non-home activity spaces. Building on this extended perspective, we examine: (1) whether residential neighbourhood isolation is intensified by socioeconomic conditions individuals’ encounter in consumption and commuting activity spaces; and (2) which socioeconomic group drives the association between residential neighbourhood isolation and activity spaces—whether both disadvantaged and privileged groups contribute to isolation through the differential use of urban space or either group predominantly leads this association. We use Seoul as a case study, characterised as a city that is highly populated, contains multiple economic centres, functions with a highly affordable and efficient public transportation system, and suffers from increasing socioeconomic segregation. The results suggest that mobility patterns in activity spaces tend to reinforce neighbourhood isolation through potential forces driven by neighbourhood homophily. Isolation in the use of urban spaces appears to be driven mainly by the self-seclusion of the most advantaged neighbourhood group, while neighbourhoods in the lower socioeconomic status groups indicate broader cross-interactions across status groups, probably because of Seoul’s transit-friendly environment. Our study contributes to enhancing the understanding of spatial-societal inequalities in Korea and beyond and could assist in formulating policies for a more balanced provision of diverse urban social services and infrastructure.

KAJIAN PERENCANAAN PASAR INDUK KABUPATEN BADUNG DENGAN PENDEKATAN TATA RUANG, ARSITEKTUR, DAN BUDAYA LOKAL BALI

In the central market planning project in Badung Regency, Bali, the main objective was to develop an economic center that combines cultural elements with sustainable economic growth. The planning goes beyond the traditional paradigm of development by integrating cultural, social, environmental, architectural, civil engineering and economic factors, creating an entity that carries more value than just commercial transactions. The central market is intended to represent a balance between cultural heritage and the dynamics of modernity, with reference to the principles of Tri Hita Karana (balance with God, fellow humans, and the natural environment) as well as the concept of Hulu - Teben which directs the organization of space based on the flow of the river. The Tri Mandala and Sanga Mandala concepts guide the zone mapping and building orientation, optimizing air circulation and natural lighting. The market architecture adopts traditional Balinese elements such as limasan and jineng roof forms, and utilizes natural materials such as red bricks and temple stones. A purposeful and iconic signage system, including the Ratu Niang Sakti statue, became an important part of the design. The result is a synergy between cultural values and global progress, forming a neighborhood that functions not only as a place of transaction, but also as a vehicle for cultural preservation and a driver of inclusive economic growth. The project encourages active community participation in the development process, accelerates the welfare of local communities, and improves the competitiveness of the region. Thus, the project achieves its goal not only as physical infrastructure, but also as a platform that integrates cultural significance and economic dynamism within the framework of sustainable development

New Commuting Zone delineation for the U.S. based on 2020 data

This paper documents the creation of new ‘commuting zones’ for the United States based on 2020 geographies and data. Commuting zones originated in the late 1980’s as the result of an effort by the Economic Research Service of the U.S. Department of Agriculture to provide a county-based delineation of functional regions that covered the entire U.S. and linked rural areas to their nearest economic center. The commuting zones presented here update the 2010 era definitions. Additionally, this new delineation incorporates measures of quality to facilitate comparison with earlier decades and to account for the fact that the quality of commuting-based delineations may have been substantially affected by changing patterns of work and residence during and after the covid-19 pandemic. The methodology used here seeks to replicate as nearly as possible the method employed in earlier versions of this delineation using hierarchical clustering on a proportional flows matrix generated from county to county commuting flows. The data and all scripts used to generate them and this paper are available at https://github.com/csfowler/CommutingZones2020.git.

Microplastics distribution, ecological risk and outflows of rivers in the Bohai Rim region of China - A flux model considering small and medium-sized rivers

Microplastics (MPs) pollution and its ecological risks have attracted increasing global attention. The Bohai Rim region (BRR), as the economic and population center of the entire northern China, still lacks a precise assessment of MPs pollution. Although current attention on MPs pollution mainly focuses on large rivers, small and medium-sized rivers are more numerous and more closely connected to human activities. In this study, measurement data of MPs from 11 estuaries in the BRR was collected to understand MPs distribution and ecological risk. The results indicate that the overall MPs pollution in these estuaries is still at a low level, with an average abundance of 1254.3 particles m−3. While the pollution load index (1.85) is relatively low, the potential ecological risk of PVC in some area (S8, EPVC = 1433.78, III) warrants further attention. Then we integrated data from 22 relevant rivers (covering all size rivers) in this region from the literature to fit a MPs flux model and assessed the MPs outflow from the four provinces and cities in the region. A strong correlation is achieved between modeled estimates and field measurements (r2 = 0.74), which can well estimate the river MPs outflows in northern China such as the Nanfei River. The MPs outflow from the four provinces (cities) is calculated to be 123.235 (range 44.415–242.314) T year−1, of which Shandong accounted for >80 % (104.066 T year−1). The small and medium-sized rivers accounted for 47 % (58.08 T year−1), whose contribution to MPs outflows should not be underestimated. This study can help us to accurately assess MPs pollution in different coastal areas in northern China, benefiting the formulation of precise control measures and policies for marine MPs pollution.

Adoption of Multi-Modal Transportation for Configuring Sustainable Agri-Food Supply Chains in Constrained Environments

Agri-food supply chains have the potential to make a significant contribution to achieving sustainable development goals through ongoing improvements in their configurations. A range of strategic, tactical, and operational level decisions pertaining to the design and operation of sustainable supply chains have been studied in the extant literature. However, investigations into the adoption of multi-modal transportation as a strategic decision in the context of agri-food supply chains operating in constrained environments are limited. As such, in this study, the adoption of bi-modal transportation for the domestic vegetable supply chain in a developing country context under certain constraints was examined. A mixed-integer linear programming model was developed to determine the volume and direction of the product flow to achieve the minimum total food-miles and smallest emissions footprint. As a case study, a Sri Lankan mainstream vegetable supply chain was used to investigate the applicability of a combination of truck and railway modes to transport vegetables from farms to retailer locations via economic (consolidation) centers. The adoption of a bi-modal transportation structure demonstrated the potential to reduce food miles by 32%, transportation costs by 36%, contributions to global warming potential by 35%, and empty truck hauls by 38%, compared to a structure with truck-based, uni-modal transportation.

Efektivitas Wira Wiri Suroboyo Sebagai Moda Transportasi Publik di Kota Surabaya

Surabaya is a continuously growing economic center, with significant mobility of residents and visitors, necessitating the development of public transportation to enhance mobility in East Java. The transportation needs of an area are generally served by public transport. Recently, the traffic data analysis company from Washington, United States, Inrix, released a study titled the Global Traffic Scorecard 2022, which ranked Surabaya as the most congested city in Indonesia. Wira Wiri Suroboyo was introduced as a public transportation system in Surabaya. The role of Wira Wiri Suroboyo as a feeder transport in Surabaya is expected to be a solution to public transportation issues and a key to expanding public transportation coverage in Surabaya. However, the implementation of Wira Wiri Suroboyo has encountered several issues, including scheduling, infrastructure, and many more. This study aims to determine and analyze the effectiveness of Wira Wiri Suroboyo as a mode of public transportation in Surabaya using Duncan's theory with a qualitative research method and descriptive approach. The research results focus on three dimensions: (1) goal achievement: the results indicate that the sub-dimensions of time frame and specific targets have been effectively achieved, but the sub-dimension of legal sources has not been effective yet, (2) integration: it has been effectively implemented with achievements in both sub-dimensions, namely procedures and socialization, (3) adaptation: the sub-dimension of capacity improvement has been effectively implemented, while the sub-dimension of infrastructure has not been effectively implemented overall. From these results, it can be concluded that Wira Wiri Suroboyo as a mode of public transportation in Surabaya is not yet considered effective overall.

Mapping high-resolution XCO2 concentrations in China from 2015 to 2020 based on spatiotemporal ensemble learning model

High-resolution column-averaged dry air mole fraction of CO2 (XCO2) data is crucial for understanding the spatiotemporal patterns of XCO2 and for mitigating carbon emissions. Due to the limited scanning range of sensors and strict inversion conditions, satellite-retrieved XCO2 data are often significantly incomplete. Machine learning models are widely used to fill these gaps in satellite XCO2 data. However, the limitations of individual machine learning models and the complexity of the spatial distribution of XCO₂ mean that the accuracy of XCO2 predictions still needs improvement. In this study, a new spatiotemporal stacked ensemble learning model (STEL) was developed by combining random forest (RF), extremely randomized trees (ERT), extreme gradient boosting (XGBoost), optical gradient boosting (LightGBM), and categorical boosting (CatBoost) using the stacking ensemble learning methodology. Considering the spatiotemporal heterogeneity of XCO2, a novel spatiotemporal weighting feature was constructed as part of the model's input parameters. Finally, the XCO2 observed by Orbiting Carbon Observatory 2 (OCO-2) was reconstructed using STEL, and a monthly mean XCO2 dataset covering China from 2015 to 2020 was generated at a spatial resolution of 0.1°. The results show that STEL exhibits superior performance and generalization capabilities compared to individual machine-learning models. R2 RMSE and MAPE were 0.9624, 1.0023 ppm, and 0.1583 % on the test set, and 0.8970, 1.4213 ppm, and 0.2475 % for R2, RMSE, and MAPE in ground validation, respectively. In 10-fold cross-validation, STEL's RMSE was reduced by 9.52 % compared to the best-performing single model (RF). The spatiotemporal trend of CO2 in China from 2015 to 2020 was analyzed using STEL XCO2 data. The results indicate that this dataset accurately reflects the spatiotemporal heterogeneity of XCO2 distribution at a fine scale. Overall, XCO2 exhibited a spatiotemporal pattern of “high in the east and low in the west” and “high in spring and low in summer.” Except in summer, high XCO₂ values were mainly distributed in the North China Plain. XCO2 trends and hotspots showed considerable spatial variation. The Pearl River Delta and Yangtze River Delta urban agglomerations have the fastest XCO2 growth rates, and the distribution of XCO2 hotspots is consistent with the distribution of population and economic centers. In the sparsely populated northwest of China, XCO2 is growing rapidly due to increased thermal power generation and coal mining. XCO2 hotspots in Northwest China are mainly located in Xinjiang, Ningxia, and Inner Mongolia. The methodology and data presented are useful for further research on carbon emissions, carbon sinks, and climate change.

A Natural Jewel Threatened by Maritime Insecurity in the Gulf of Guinea

The Gulf of Guinea, an area rich in natural beauty and natural resources such as oil, gas, and fisheries, faces serious threats from widespread maritime piracy activities. The region is an important economic center, but maritime insecurity threatens its economic stability and development. Numerous regional and international initiatives have been undertaken to enhance security in these waterways, such as the Nigerian government's "Deep Blue" project and collaboration with the Economic Community of West African States (ECOWAS). The UN Security Council has also passed a resolution to address this threat. Despite this, challenges remain significant due to the high number of attacks and significant economic impact. Addressing this issue requires continued cooperation between countries in the Gulf of Guinea region and the international community to ensure security and sustainable exploration in this region​.

Synergies of Cultural–Creative Industries and Development in Peripheral Areas: Networking, Social Capital, and Place

Cultural and Creative Industries (CCIs) are widely acknowledged in academic and policy discourse as fundamental resources for local development. Nevertheless, a deeper understanding of the analysis of CCI function patterns and full potential exploitation in peripheral areas is needed in the literature on regional and local economic development. Peripheral destinations are often characterized by specific obstacles such as geographical remoteness from dominant economic centers, poor infrastructure and amenities, limited capacity for decision-making, etc. However, they can also have characteristics that can support the sustainability and development of a place, such as rich cultural heritage, traditional cultural industries, uniqueness and authenticity, and cultural identity and social cohesion. This paper provides an overview of the main characteristics of the CCIs in peripheral areas and explores synergy patterns, a significant procedure for sustainability, exchange of knowledge and practices, development of actions, promotion of innovation and local development. More specifically, the study incorporates formal networking through entrepreneurial practices and informal networking through social capital into the network theory of the cultural sector in peripheral areas of Greece. In order to identify the key traits and factors that contribute to synergies in the cultural sector, a two-stage research design has been employed. A qualitative approach based on structured interviews and relative importance index analysis to provide an assessment framework has been used. Results indicate that CCI synergy in peripheral areas depends primarily on social capital, which is extremely important in local policies rather than just entrepreneurial practices.

Persepsi Masyarakat terhadap Kegiatan Pasar Malam pada Akses Jalan Umum di Desa Bukit Pariaman, Kecamatan Tenggarong Seberang, Kabupaten Kutai Kartanetagara

The aim of this research is to find out the public's perception of night market activities and the impact they have on road access in Bukit Pariaman Village, Tenggarong Seberang District, Kutai Kartanegara Regency.The type of data analysis carried out was using a qualitative descriptive analysis method. This research was carried out through interviews, field observations and document analysis. The research results show that the night market in Bukit Pariaman Village, which has been operating since 1995 and is held every Wednesday night, is an important economic and social center. However, limited parking space causes traffic jams that disrupt community activities. Inadequate infrastructure has also disrupted sales activities and reduced income since the Covid-19 pandemic. Parking money is channeled to the village treasury, but there has been no concrete solution from the market management and village government. This creates a feeling of discomfort felt by the community. Therefore, better management is needed, including providing parking lots, improving infrastructure and fair regulations. The community hopes that the village government will immediately provide a solution to reduce congestion and increase comfort. The research results recommend providing adequate parking, infrastructure improvements, more effective traffic management, transparency in financial management, and collaboration with the community to improve night market management in Bukit Pariaman Village.

Travel Demand Models for Visitors to Pasar Baru Banggai, Banggai Laut Regency, Indonesia

Pasar Baru Banggai in Banggai Laut Regency is a crucial economic and social center for the local community. This article aims to analyze the factors influencing the travel demand of people to this market. Various aspects such as income, travel distance, travel time, product completeness, and market area were analyzed in depth. The methodology used includes field surveys, participatory observation, and secondary data analysis from relevant sources. The research sample was conducted using stratified sampling with strata based on visit frequency (daily, weekly, and monthly visitors) and potential visitors to the market. The total sample size was set at 100 visitors, which is a combination of all samples from each stratum as the final sample in this study. The research results show that income, travel distance, travel time, completeness of goods sold, and market area are the main factors attracting people to visit Pasar Baru Banggai, following the mathematical model Y = 0.858 + 0.182(X1) + 0.183(X2) + 0.112(X3) + 0.162( X7) + 0.145(X8). Additionally, this market also provides quality local products that meet the needs of the local community, further strengthening its position as the regional economic center. Based on this analysis, several recommendations are proposed to enhance the attractiveness and function of Pasar Baru Banggai, including improving supporting infrastructure, promoting local products, empowering traders through training and support, and implementing efficient market management. With these measures, it is hoped that Pasar Baru Banggai can continue to grow and provide greater benefits to the people of Banggai Laut Regency, as well as contribute to the improvement of the region's economic and social welfare.

A Collaborating Centre for animal health economics in the Americas.

Countries in the Americas play a vital role in global livestock and aquaculture production. With international trade of livestock and aquaculture products becoming an important source of income for countries, there has been an increased interest in using animal health economics for advocacy and allocation of resources. This article discusses the development of a new Collaborating Centre for the Economics of Animal Health and the applications of the Global Burden of Animal Diseases (GBADs) framework in the Americas region. Incentives for the increased use of economics in animal health decision-making and examples from the Americas region are examined. The article then discusses the newly formed World Organisation for Animal Health Collaborating Centre in the Americas region. Finally, it reviews two ongoing case studies that are implementing the GBADs framework in Peru and the United States of America.

Quantifying microplastics in sediments of Jinzhou Bay, China: Characterization and ecological risk with a focus on small sizes

Small-sized microplastics (MPs) pose greater ecological toxicity due to their larger surface area, which makes them more likely to act as carriers for other pollutants and to be ingested by aquatic organisms. However, traditional visual analysis often neglects small-sized MPs and their associated ecological risk. This study utilized Laser Direct Infrared (LDIR) spectroscopy and traditional visual analysis to examine MPs in 31 sediment samples from Jinzhou Bay, a typical semi-enclosed bay located at the economic center of Dalian, China. The results showed significant heterogeneity in MP distribution, with averages of 1192 and 2361 items/kg dry weight reported by visual analysis and LDIR spectroscopy, respectively. LDIR spectroscopy identified MPs as small as 10 μm, with the majority of MPs (89.21 %) within the 10–250 μm range, and a significant proportion (46.45 %) between 10 and 50 μm among them. However, visual analysis was limited to detecting MPs >50 μm, and significant portions were identified between 50 and 100 μm (49.36 %) and 100–250 μm (31.01 %), missing a substantial fraction of smaller MPs. The predominant polymers identified were polyamide (PA), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and acrylonitrile butadiene styrene (ABS). LDIR spectroscopy demonstrated a strong positive correlation between MP abundance and clay content, a relationship not observed with traditional visual analysis. The Potential Ecological Risk Index (PERI) indicated that over 87 % of sites posed an extremely high risk according to LDIR spectroscopy, compared to 51 % by traditional visual analysis. These discrepancy underscores the underestimation of ecological risks by traditional methods, particularly for small-sized MPs. High-risk polymers such as polyvinyl chloride (PVC), ABS, and polyurethane (PUR) significantly influenced PERI values. These findings highlight the critical need for precise identification and thorough risk assessment of small-sized MPs in environmental studies and offer insights for understanding of MP vertical migration in aquatic environments, particularly in the context of co-settlement with sediments.

Assessing green production efficiency and spatial characteristics of China’s real estate industry based on the undesirable super-SBM model

As China strives to balance rapid urbanization with environmental conservation, increasing attention is being paid to the pursuit of green production efficiency (GPE) in the real estate industry. The undesirable super-SBM model was used to calculate the GPE of China's real estate industry from 2001 to 2020. Additionally, GPE spatial distribution characteristics in China's real estate industry were analyzed using the standard deviation ellipse (SDE), Moran’s index, Theil index, random kernel density estimation (RKDA), and spatial Markov chain (SMC) methods. The GPE exhibited a U-shaped trend, with 2008 as the inflection point, first decreasing and then increasing. It reached a maximum value of 0.747 in 2020. The Theil index increased from 0.043 to 0.121 nationwide, indicating the overall characteristics of low-level slow growth, and imbalance. Discrepancies in input–output scales, the southward shift of economic centers, and population movements contribute significantly to the disparities between the east and west, north and south, and regions divided by the Hu Huanyong Line (Hu Line). The GPE exhibited club convergence characteristics; however, polarization phenomena exist in local areas. Spatial spillover effects were also observed in GPE. Finally, we provide recommendations for promoting green development in the real estate industry, including green building technology, fiscal subsidy investment, and population migration management.

The FLuorometholone as Adjunctive MEdical Therapy for Trachomatous Trichiasis Surgery (FLAME) Trial: Study Design.

To report the design of FL uorometholone as A djunctive ME dical Therapy for TT Surgery (FLAME) Trial. Parallel design, double-masked, placebo-controlled clinical trial with 1:1 randomization to fluorometholone 0.1% eyedrops twice daily or placebo twice daily for four weeks in eyes undergoing trachomatous trichiasis (TT) surgery; assessing the efficacy, safety, and cost-effectiveness of fluorometholone 0.1% in preventing recurrent postoperative trichiasis. Up to 2500 eligible persons with trachomatous trichiasis (TT) undergoing lid rotation surgery will be enrolled in Jimma zone, Ethiopia. Participants, surgeons, study field staff, and study supervisors leading operational aspects of the trial are masked to treatment assignment. Randomization is stratified by surgeon, which simultaneously stratifies by the district. The study visits are at baseline/enrollment, at four-week post-enrollment, six months, and one year (study exit). The primary outcome is cumulative one-year postoperative TT (PTT) incidence, defined as: ≥1 lashes touching the globe, evidence of epilation, and/or repeat TT surgery. Secondary postoperative outcomes include number of trichiatic lashes, location thereof (touching the cornea or not), evidence of post-operative epilation, entropion, changes in corneal opacity, IOP elevation, need for cataract surgery, visual acuity change from baseline, eyelid contour abnormality, granuloma, eyelid closure defect, and occurrence of adverse events. Health economic analyses center on calculating the incremental cost per case of PTT avoided by fluorometholone treatment. The FLAME Trial is designed to provide evidence of the efficacy, safety, and cost-effectiveness of adjunctive topical peri-/postoperative fluorometholone 0.1% therapy with trichiasis surgery, which is hypothesized to reduce the risk of recurrent trichiasis while being acceptably safe. Trial Registration: ClinicalTrials.gov # NCT04149210.

Urban Transformation in Muslim Neighborhoods: From Shanghai’s Women’s Mosque into a Retirement Home

Since the mid-19th century, the migration of Hui Muslims to Shanghai has fostered the development of stable residential neighborhoods around the Small Peach Garden Mosque, turning the area into a hub for religious gatherings and a bustling economic center, especially for the beef, mutton, and catering sectors. However, the dawn of the 21st century brought with it swift economic expansion and urban redevelopment, gradually replacing the neighborhoods surrounding the mosque with high-end residential zones. Soaring land prices slashed the profits of Muslim food businesses in the area to the point of unsustainability, disrupting the traditional pattern of life around the mosque. This study offers insights from interviews with older Muslim women who stayed at the Small Peach Garden Women’s Mosque after its demolition, slowly transforming it into a retirement home. Their stories underline that architectural conservation alone is not sufficient to preserve the character of historic and cultural sites. The study calls for a deeper understanding of urban transformations in historic urban landscapes for religious minorities.

Social Capital Contribution to Community Development, Analysis in the Two Main Urban Centers of Colombia

Next, the main objective is to identify the incidence of the generation and accumulation of social capital in community development. In the two main economic centers of Colombia (Bogotá and Medellin), descriptive research is carried out with quantitative analysis based on The collection of official data in four official measurements carried out in the country, this study starts by recognizing an accumulated low at the national level in the official measurements of social capital in recent decades, an incident factor in low social cohesion, and therefore poor level of generation of social fabric created from associativity, this being an agent incident in the development of a territory in terms of development.

Urban land subsidence monitoring and risk assessment using the point target based SBAS-InSAR method: a case study of Changsha City

ABSTRACT Changsha City is the political, economic and cultural centre of Hunan Province. In recent years, because of large-scale urban construction and special geological structure, land subsidence has become one of the main geological disasters in Changsha City, which seriously threatens the health of buildings and infrastructure. To solve this problem, this paper monitored the land subsidence in Changsha City from 2015 to 2021 using the Point Target (PT) based Small Baseline Subset InSAR (SBAS-InSAR), revealed the spatial distribution characteristics of land subsidence in the study area, studied the causes of subsidence, and carried out geological disaster risk assessment. The results show that the overall stability of Changsha City is dominated by uneven subsidence. The subsidence areas are mainly distributed in the north of Kaifu District, Moon Island, Malan Mountain Chuangzhi Park and the periphery of the main urban area. The maximum settlement rate is about 87 mm/year, and the cumulative settlement reaches 250 mm. The settlement monitoring results are basically consistent with the actual situation at the same time, which is mainly caused by engineering construction.