Southwest Region Research Articles

Local government interventions for improving the health and wellbeing of tenants in private rented housing: developing initial program theory to inform evaluation in the United Kingdom

BackgroundHousing is an important wider determinant of health. Private Rented Sector (PRS) housing is generally the worst quality of housing stock across tenures. Although a wide range of interventions are available to local governments to manage and improve the quality of PRS housing and therefore the health of tenants, there is limited evidence about the extent to which these are used. This study aims to explore what drives the use of different interventions in different local governments, to better understand and inform local strategies.MethodsAs the first realist evaluation on this topic, the range of available interventions was informed by a Local Government Association toolkit. Consistent with realist approaches, retroductive analysis of intervention-context-mechanism-outcome configurations helped to develop and refine Initial Programme Theories (IPTs). Data sources included local government housing documents, a survey and eleven semi-structured interviews with housing officers.ResultsUsing data for 22 out of the 30 local governments in the South West region of the United Kingdom, eight IPTs were developed which act on different levels from individual PRS team leaders to system wide. The IPTs include a belief in market forces, risk adverse to legal challenge, attitude to enforcement, relational approaches to partnership working, job security and renumeration, financial incentives drive action, and system-level understanding of the drivers of poor health, inequalities and opportunities for cost-savings. The findings suggest that limited objective health outcomes are being used to understand impact, which hinders interpretation of the effectiveness of all mechanisms.ConclusionInterventions that bring about positive outcomes in managing PRS housing are unlikely to be universal; they depend on the context which differs across place and over time. The proposed IPTs highlight the need for strategies to be tailored considering the local context and should be evaluated in subsequent phases of study.

Prevalence and genotype distribution of human papillomavirus infection among 66000 women from 2014 to 2023 in the plateau region of Southwest China

BackgroundPersistent infection with high-risk human papillomavirus (HR-HPV) plays a key role in the onset of cervical cancer. This study was designed to examine the epidemiological trends and genotype distribution of HPV from 2014 to 2023 in the plateau region of Southwest China.MethodsThe findings could offer valuable insights for clinical screening of cervical cancer and the formulation of HPV vaccination policies. This retrospective study analyzed 66,000 women who received HPV-DNA testing at the First People’s Hospital of Qujing, Yunnan, China, between 2014 and 2023. The cohort consisted of 33,512 outpatients, 3,816 inpatients, and 28,672 individuals undergoing health examinations. Cervical cells were collected for DNA extraction, and PCR amplification along with Luminex xMAP technology were used to detect 27 HPV genotypes. The data analysis was conducted using GraphPad Prism and IBM SPSS Statistics 27 software.ResultsThe overall HPV infection rate at the First People’s Hospital of Qujing declined from 24.92% in 2014 to 16.29% in 2023, averaging 16.02%. Specific infection rates were 18.50% among outpatients, 12.97% among inpatients, and 13.53% for health examination attendees. The predominant high-risk HPV genotypes identified were HPV52 (2.61%), HPV16 (2.06%), HPV58 (1.81%), HPV53 (1.55%), and HPV39 (1.09%). Meanwhile, the most frequent low-risk HPV genotypes were HPV6 (1.30%), HPV61 (1.21%), and HPV11 (0.85%). In HPV-positive cases, the distribution of single, double, triple, and quadruple or more infections were 79.90%, 15.17%, 3.59%, and 1.33%, respectively. The proportions of pure LR-HPV, pure HR-HPV, and mixed infections were 22.16%, 67.82%, and 10.02%, respectively. Age-specific analysis revealed a bimodal distribution of HPV infection, with the infection rate rapidly decreasing from 44.02% in the ≤ 19 age group to 19.55% in the 20–29 age group and 13.84% in the 30–39 age group, followed by a gradual increase to 14.64% in the 40–49 age group, 16.65% in the 50–59 age group, and 22.98% in the ≥ 60 age group. The coverage rates of the three available vaccines are all below 50%. The results of this study indicated a declining trend in HPV prevalence in the plateau region of Southwest China over the period from 2014 to 2023, especially in the reduction of genotypes targeted by vaccines.ConclusionThere were significant variations in the genotypes prevalent among different age groups, years, and patient sources within the same region. The underwhelming vaccination rates emphasize the critical need for developing either a multivalent vaccine or a personalized vaccine that targets the HPV genotypes common in the Chinese population. Furthermore, vaccinating adolescents to curb HPV infection and ensuring regular cervical cancer screenings for postmenopausal women are crucial steps.

Assessing the Impact of Climate Comfort on Labor Productivity in Hydropower Engineering Construction in Southwest China

Labor productivity exerts a significant influence on the construction cycle and investment in hydropower projects. Consequently, it is a crucial factor in the estimation of the cost of hydropower project construction. The mechanisms that are modulated by subjective factors have been extensively studied. However, the assessment of labor productivity in objective environments with regular changes is usually considered using a single factor, especially in special environments where the influence of environmental factors is of greater concern. As the most extensive region of China’s water-energy resources, the Southwest region has a lengthy tradition of using altitude or oxygen as an inherent criterion for the assessment of labor productivity. However, the applicability of inherent standards is limited. Therefore, we tried to assess the spatial and temporal changes in labor productivity based on the changes in meteorological conditions in Southwest China, employing climate comfort indicators in this study. The result identified five distinct regions of climate change in Southwest China (R-I to R-V). In particular, there is minimal variation in labor productivity as assessed by climate comfort indicators and the elevation between R-I and R-II. R-III and R-IV are influenced by oxygen, temperature, and humidity, while R-V is affected by a multitude of factors. Our findings indicate that temporal and spatial variations in meteorological conditions can result in up to a threefold difference in productivity at the same altitude in different regions. Importantly, our study provides valuable theoretical insights for engineering project management. In particular, it can be concluded that altitude is not a reliable indicator for evaluating labor productivity in high-altitude construction.

Cropping intensity mapping in Sentinel-2 and Landsat-8/9 remote sensing data using temporal transfer of a stacked ensemble machine learning model within google earth engine

This article aimed to map Cropping Intensity Patterns (CIPs) in the southwest region of Iran using Google Earth Engine and monthly composites of Sentinel-2 and Landsat-8/9 data. To detect CIPs with high inter- and intra-class variability of crops, a heterogeneous Stack ensemble of machine learning model was developed. The model incorporated the Minimum Distance (MD) approach as a meta-classifier, combining multiple base models, including Support Vector Machines (SVM), Random Forest (RF), Classification and Regression Trees (CART), and Gradient Boosted Trees (GBT). In 2021, the Stack model was trained and evaluated using Ground Truth (GT) samples from the same year, achieving an Overall Accuracy (OA) of 94.24%. This performance surpassed the base models by about 4% in OA and was also reflected in the detection accuracies, including User’s Accuracy (UA), Producer’s Accuracy (PA), and F1-score, of the target classes. Subsequently, the trained stack model was temporally transferred to generate CIP maps for other years. The model achieved high OAs of 91.82% and 90.97% based on GT samples from 2020 and 2022, respectively. Finally, the time series of CIP maps (2019-2023) were utilized by the Cellular Automata-Markov model to forecast the map for 2024.

Forest Clearance and Fragmentation for Charcoal Production: The Case of Bimbia Bonadikombo Forest, South West Region, Cameroon

The exploitation activities of man on natural resources have hardly been sustainable. This study examined the implication of charcoal production on the Bimbia Bonadikombo forest and it’s environ. The study employed both direct field observation and questionnaire administration for data gathering. Questionnaires were administered to charcoal producers and persons involved in charcoal related activities. Persons were selected using snowball technique. A total of 42 copies of questionnaires were administered to charcoal producers and related activities. Tree species used for charcoal production were noted and identified. The questionnaire was divided into five sections:(i), socio-demographic characteristics of charcoal producers, (ii), methods of charcoal production and species selected (iii), aspects influencing charcoal production and the implication on the ecosystem, (iv), seasonal trends and challenges faced (v) mitigation strategies used). Data collected were organized in Microsoft Excel and Statistical Package for Social Sciences (SPSS) was used for the analyses. Pearson (ρ) correlation association was used for the relationship between variables of production and the demand of charcoal. The result revealed that, majority of the respondents, 78.57%, were males while females were least 21.43%. Majority of the respondents (54.76%) were between the ages of 31-46 while the least with ages > 47. Lophira alata 14 (35.71%) was the tree species ranked 1st while Irvingia gabonensis1 (2.38%) was the least and ranked 8th. The main aspect that influenced production was revenue generated 14 (33.33%) while weak institutions 2(4.76%) and crises situations 2(2(4.76%) were the least. Deforestation 12(28.57%) and habitats destruction 8(10.04%) were reported as the main effects caused by charcoal production. Production and the demand of charcoal variables showed a positive association (0.153±.361). The management strategies employed were: only matured trees were used for charcoal production, permanent charcoal pit kiln are dug out of forest canopy and only few tree species are used for charcoal production. For mitigation purposes used are: domestication, protecting wild charcoal trees in their farms and nurseries establishment. This study recommends that charcoal is a major source of energy and alternative source of energy when others failed or insufficient. Therefore, this source of energy can be enhanced to be more eco friendly and environmentally sustainable.

Scientific (Astro) tourism activities in Armenia and in South West and Central Asian region

Scientific Tourism activities have been initiated in a number of countries during the recent decades. Armenia was among the first countries developing Scientific Tourism and most probably the first to develop Astro Tourism. We were the first to introduce the term “Astronomical Tourism” (or “Astro Tourism”). This includes visits to astronomy-related sites (astronomical observatories, astronomical institutes, astronomy-related university departments, ancient sky/astronomy-related sites, medieval universities, planetariums, space/astronomy museums, etc.) but not only. The organization of astronomical meetings, schools, camps and other events with involvement of many visitors, we also consider as Astro Tourism activities. We give an overview of our activities, including the main project; development of Astro Tourism in the SWCA region. A detailed study of Astro Tourism sites in Armenia, Georgia, Iran, Kazakhstan, Tajikistan, Turkey and (in addition) Uzbekistan was carried out, namely, modern astronomical observatories and institutes, ancient astronomy-related sites, medieval universities, planetariums, astronomy/space museums, etc. A webpage was built representing Astro Tourism in SWCA region. We also discuss the Scientific Tourism and Tourism in general as disciplines for studies and not only as service. We will share our experience on Scientific/Astro tourism activities and discuss how different items may be implemented in different regions.

Application of Geophysical Methods in the Identification of Mineralized Structures and Ranking of Areas for Drilling as Exemplified by Alto Guaporé Orogenic Gold Province

Mineral exploration works conducted in the Alto Guaporé Gold Province (AGGP), situated in the southwest region of the Amazon Craton in Brazil, faces the challenges of many gold provinces around the world, i.e., declines in the discoveries of new economic deposits and increases in exploration costs. Ground geophysical methods, combined with structural analyses and geological mapping, are valuable tools that have potential to improve accuracy in selecting exploration targets and in determining drilling locations. AGGP deposits are primarily associated with regional N20°–W50° inverse faulting and sheared geologic contacts between Meso-Neoproterozoic siliciclastic metasedimentary rocks and Mesoproterozoic basement (granite and volcano–sedimentary sequences). Mining currently occurring in the central portion of the province drives exploration works towards the many existing targets at the area. Among them, the ABP target is one of the most promising for being located few kilometers north of the Pau-a-Pique mine. At the ABP target, gold is associated with hydrothermal alteration located in the sheared contacts and in the hinge zone of folded metasedimentary sequence. Hydrothermal phases include Fe-oxides, sulfide (py), muscovite and quartz veins. In this study, we use magnetic and geoelectric (induced polarization) surveys coupled with structural and geological mapping to identify potential footprints within the ABP target. The results from induced polarization (IP) profiles successfully mapped the shape and orientation of the main structures down to approximately 350 m at the ABP target, indicating potential locations for hydrothermal alteration hosting gold. Additionally, 3D magnetic data inversions illustrated the distribution of magnetic susceptibilities and magnetization vectors associated with shear zone structures and isolated magnetic bodies. Magnetic data highlighted fault zones along the contacts between metamorphic rocks and granites, while IP data identified areas with high chargeability, correlating with sulfidation zones mineralized with gold. These findings suggest a metallogenic model where gold deposits are transported through deep structures connected to regional faults, implying significant tectonic and structural control over gold deposition. The results underscore the potential of multiparameter geophysics in identifying and characterizing deposits in both deep and strike, thereby advancing our understanding of mineral occurrences in the region and enhancing the search for new mineralized zones.

Youth empowerment for national development in Cameroon: The case of youths in Buea municipality, south West Region

Youth empowerment remains a major issue in Cameroon and the world at large. This study sought to establish the link between youth empowerment and National Development, examine the activities of the government in the process of empowering youth as well as asses the challenges faced in empowering youths in Buea municipality, South West Region of Cameroon. A cross-sectional descriptive design was used. Random sampling procedure was used to select the youths. The sample size comprised 60 respondents. A 5-point Likert scale was, where variables were categorized as follows: strongly agree, agree, neutral, disagree, and strongly disagree. Data were presented as means of each group of charts and graphs. The results revealed that there were strategies used by the government to empower youths in the municipality with policies that emerged from the study such as the Cameroon national youth policy (2006), Special youth triennial plan, Growth and Empowerment Strategy Paper (GESP 2010) even thou they were not that adequate enough. Conclusion given was that such as financial literacy training should be open for all youths, public partnerships should be fostered between the government, development partners, non-governmental organizations, financial institutions and other relevant financial institutions to help youths to access information and capital were then given to ensure and promote adequate youth empowerment.

Geotechnical Assessment of Seismic Vulnerability in the Built Environment of Fako Division, South West Region of Cameroon

Introduction: Volcanic earthquakes may trigger severe hazards with considerable impact on the natural and built environment and the surrounding population. Aim: Evaluate the geotechnical characteristics of soils in Fako division to estimate their seismic vulnerability and recommend suitable stabilization techniques to enhance the safety and resilience of built environments. Place and Duration of Study: This study was conducted over a period of 12 months beginning from June 2022 to May 2023. Methodology: It employed a multi-criteria geotechnical approach, involving soil sampling, laboratory analysis, and seismic risk analysis. Soil samples collected from various locations within the study area, were subjected to laboratory tests to determine their plasticity (Atterberg limits) and load-bearing capacity (California Bearing Ratio - CBR). Historical data analysis and seismic hazard mapping were used to assess seismic vulnerability which helped to identify highly susceptible and unstable areas that may require engineered interventions. Results: The findings revealed significant variations in soil plasticity and load-bearing capacity, correlating with observed settlement and instability issues in the region. Historical seismic events, highlighted significant structural damage in areas with high plasticity and low CBR values, underscoring the necessity for robust soil stabilization measures (geotechnical interventions) to mitigate seismic risks and enhance the resilience and safety of structures, reducing the risk of settlement and instability within the Mount Cameroon area, particularly Fako Division.

A Coordination Analysis on Rural Revitalization and Tourism High-Quality Development along the Silk Road Economic Belt, China

There is limited analysis of the role of tourism in rural revitalization (RR) from a high-quality development perspective. To address this gap, this study analyzes the spatiotemporal patterns and coupling coordination degree (CCD) of tourism high-quality development (THD) and RR in the Silk Road Economic Belt from 2011 to 2020 using coupling coordination and gravity models. A geographic detector is employed to quantitatively elucidate the factors influencing the CCD. The findings are as follows. (1) The comprehensive RR level increased 86% from 2011 to 2020, whereas the THD level first increased and then decreased. The southwest region outperformed the northwest in RR and THD levels. (2) The CCD between RR and THD displayed various degrees of increase, with a spatial pattern of higher levels in the southwest and lower levels in the northwest. The spatial linkage strength of the CCD first increased and then decreased, with tighter linkages among the southwestern provinces. (3) Public fiscal expenditure, per capita GDP, and science and education spending significantly affected the CCD. In conclusion, the effective coordination of THD and RR requires a focus on their spatiotemporal coupling characteristics and the joint regulation of multiple factors.

Influences of Gender, Age and Income Differences on Consumers’ Purchase Items

This paper studies whether gender, age and income differences matter for in-store purchases of selected non-durable and durable consumer goods in the Southwest region of the State of Louisiana. Primary data are collected by face-to-face interviewing of randomly selected adult population within the age groups 15 years to 64 years, and above. Using the collected primary data for categorical variables, -tests are implemented for six separate null hypotheses of statistical independence between/among variables of interest. The results reveal that only gender difference matters the most for in-store purchases of both non-durable and durable goods in the region. Age and income differences to have no significant influences on such purchases. As the findings suggest, the regional in-store retailers should focus more on female shoppers to promote sales of non-durable goods. At the same time, they should focus more on male shoppers for promotion of sales of durable goods in the region. Due cautions are in order for any kind of generalization of the findings of this study, given the extreme regional characteristics of the primary data. Key Words: Retail Sales, In-Store, Non-Durable Goods, Durable Goods, Shoppers, Age, Gender, Income JEL Classifications: D10, D11, D12

Exploring the Experiences of Informal Caregivers of HIV Positive Pregnant and Breastfeeding Women on Existing HIV Services in Fako Division, Southwest Region, Cameroon: A Qualitative Study

Exploring the Experiences of Informal Caregivers of HIV Positive Pregnant and Breastfeeding Women on Existing HIV Services in Fako Division, Southwest Region, Cameroon: A Qualitative Study

Elevated Ambient Temperature Associated With Increased Cardiovascular Disease–Risk Among Patients on Hemodialysis

IntroductionAmbient temperatures have increased due to climate change in many parts of the world. Due to loss of renal function which impacts regulation of thermoregulatory mechanisms the ability to adapt and resilient to changing conditionals is particularly concerning among individuals with kidney failure. The aim of this study is to assess the effect of heat on mortality and health care utilization among US hemodialysis patients. MethodsWe conducted a retrospective analysis 2011-2016 in contiguous United States during warmer months among eligible dialysis patients identified in the United States Renal Data system. Daily ambient temperature was estimated on a 1 km grid and assigned to ZIP-code. Case-crossover design with conditional Poisson models were used to assess the risk of developing adverse health outcomes associated with temperature exposure. ResultsOverall, exposure to high temperature is associated with elevated risk for both mortality and health care utilization among hemodialysis patients. The risk ratios for all-cause mortality and daily temperature were 1.07 (95% CI: 1.03-1.11), 1.17 (1.14-1.21) for fluid disorder-related hospital admissions, and 1.19 (1.16-1.22) for cardiovascular event-related emergency department visits, comparing 99th percentile vs. 50th percentile daily temperatures. Larger effects were observed for cumulative lagged exposure three-days prior to the outcome and for Southwest and Northwest climate regions. ConclusionHeat exposure is associated with elevated risk for CVD-related mortality and health care utilization among this vulnerable population. Furthermore, the effect appears to be potentially cumulative in the short-term, and varies geographically.

The changes prediction on terrestrial water storage in typical regions of China based on neural networks and satellite gravity data

Accurate prediction of regional terrestrial water storage change (TWSA) is of great significance for water resources planning and management, and early warning of extreme climate disasters. Aiming at the problem that the conventional methods on prediction of TWSA time series are difficult to be accurate, the six typical regions are selected in China as examples, including the upper reaches of the Yangtze River (UYR), the southwest region (SWR), the Liaohe River Basin (LRB), the North China Plain (NCP), the Qinghai-Tibet Plateau (QTP), and the Pearl River Basin (PRB). The mascon product from GRACE/GRACE-FO provided by CSR is used to extract TWSA time series in six typical areas. The improved Back Propagation (BP) neural network, Long Short-Term Memory (LSTM) neural network and the latest Bidirectional LSTM (BiLSTM-attention) neural network model based on attention mechanism are proposed to predict and analyze the regional TWSA. In the experiment, the selection of the optimal model parameters such as the number of hidden layer nodes and the number of hidden units of the neural network model is tested and analyzed in detail. Meanwhile, the model prediction results are compared with the traditional least squares method and random forest (RF) prediction method. The root mean square error (RMSE), determination coefficient (R2), Nash–Sutcliffe efficiency coefficient (NSE) and mean absolute percentage error (MAPE) were used to evaluate the accuracy of the predicted results. The results show that the improved BP, LSTM and Bi-LSTM-attention neural network models all achieve higher prediction accuracy in UYR and SWR areas. RMSE is less than 2.641 cm, R2 is as high as 0.8 or more, NSE is above 0.6, and MAPE is within 0.1. Compared with the least square method, the RMSE of the predicted results from three neural network decreased by 0.998 cm, 0.700 cm and 0.7563 on average, and the R2 increased by 81.75%, 69.89% and 72% on average. Compared with RFML method, the RMSE from three neural network is reduced by 0.601 cm, 0.316 cm and 0.360, and R2 is increased by 38.20%, 24.60% and 27.06% on average. NSE and RMSE are improved to varying degrees in the above regions. It shows that the improved BP, LSTM and BiLSTM-attention model used can effectively predict TWSA. The research methods and results in this paper can provide important reference for the rational utilization of regional water resources and disaster risk assessment.

Organisational and technological factors affecting efficient service delivery in trustworthy digital repositories: A qualitative approach

This study was undertaken to identify the organisational and technological factors that affect the efficiency of service delivery in trustworthy digital repositories of university libraries, where digital repositories have become increasingly common. The interpretive research paradigm, which relies on qualitative research, was adopted for the study. Data was collected through semi-structured interviews with nine participants from selected universities in the South West region of Nigeria. The data was analysed thematically to explore the factors affecting service delivery in trustworthy digital repositories. The findings show that both organisational factors (such as standardised organisation policies, stakeholders’ participation and financial sustainability) and technological factors (digital repository certification, technological standards, etc.) have a significant effect on service delivery in a university-based trustworthy digital repository. It is concluded that by adopting these factors, institutions can establish digital repositories that are not merely data storage facilities, but also trusted and valuable sources of scholarly information and knowledge.

High prevalence of carbapenem-resistant Enterobacterales (CRE) in human samples from Nigeria: A systematic review and meta-analysis

ObjectivesThe rise in Carbapenem-resistant Enterobacterales (CRE) is perturbing. To curb the menace of CRE, a comprehensive understanding of its prevalence and epidemiology is crucial. As varying reports abound, the true prevalence of CRE in Nigeria remains unknown. Here, we conducted a systematic review and meta-analysis following standard guidelines to assess the situation of CRE in Nigeria. MethodsWe searched electronic databases including Pubmed, ScienceDirect, Scopus, Web of Science, and Google Scholar for articles providing information on CRE in Nigeria. The data gathered were analyzed using OpenMeta Analyst and Comprehensive Meta-Analysis software. The random-effect model was employed to calculate pooled resistance to carbapenem antibiotics. ResultsFrom 321 retrieved records, 57 were finally included. The studies were predominantly from the South-West region (n = 19). Escherichia coli and Klebsiella pneumoniae were the most frequently tested Enterobacterales among the included studies. The pooled prevalence estimate for imipenem resistance among CRE was 11.2 % (95 % CI: 7.9–15.7). Meropenem resistance had an estimate of 13.5 % (95 % CI: 9.1–19.6), whereas ertapenem and doripenem were estimated at 17.0 % (95 % CI: 9.9–27.7) and 37.9 % (95 % CI: 15.0–67.8), respectively. High heterogeneity (I2>85 %, p < 0.001) was observed for the estimates. The highest resistance rate to imipenem (28.4 %), meropenem (37.2 %) and ertapenem (46.5 %) were observed for the South-South region. Based on specific CRE genera, Morganella sp. was the most resistant (37.0 %) while Escherichia sp. was the least (9.4 %). Our analyses also revealed a progressive increase in resistance to carbapenem antibiotics over the years. ConclusionThis study highlights carbapenem resistance as a concern in Africa's most populous nation, underscoring the need for proactive measures to address and mitigate the threat of CRE.

The Influence of Internet Use on University Students’ Moral Behavior

The purpose of the study was to investigate the influence of the internet use on university students` moral behavior in South West Region Cameroon. The researcher used mixed research method design involving both qualitative and quantitative methods. The sample size used was 100 students from HTTTC Kumba all departments from levels 200 and 300. Four lecturers were also interviewed. From the findings, majority of the respondents indicated that some of their private information has been disclosed without their permission; they have been involved in plagiarism, betting, cyber bullying, illegal downloading and many other vices. These issues can be handled through guidance and counselling sessions for students. Also, each department should use plagiarism detection software and each lecturer is expected to be trained in using the software in order to combat plagiarism.

Managerial values and sustainable oriented innovation: Examining the role of knowledge exploration versus exploitation practices

Purpose Leveraging upper echelon theory and knowledge-based view of the firm, this paper aims to explore how chief executive officers’ (CEO) sustainability orientation influences explorative and exploitative knowledge management practices, which in turn influence incremental and radical sustainable innovation under boundary conditions of CEOs’ temporal focus and regional affiliation in the home country. Design/methodology/approach This study used a nonprobability convenience sampling strategy. Using survey-based research, the authors tested the study hypotheses using partial least squares structural equation modeling on a sample of 298 CEOs from Indian small and medium enterprises. This study also tested the reliability and validity of the study variables by using internal consistency tests and convergent and discriminant validity procedures. Findings The study finds that CEO sustainability orientation affects incremental and radical sustainable innovation via the mediating effect of explorative and exploitative knowledge management practices. Furthermore, CEOs’ past temporal focus increases the influence of orientation on exploitative knowledge management. In contrast, future temporal focus increases the influence of CEO sustainability orientation on exploratory knowledge management practices. Finally, CEOs from the southwest, west and northwest regions of India increase the influence of exploratory knowledge management on radical sustainable innovation. Research limitations/implications This study has significant implications for understanding upper-echelon factors that drive knowledge management practices. CEO temporal focus (time orientation) and demographic aspects (regional affiliation) influence CEOs’ investment in different knowledge management and, hence, sustainable innovation management practices. However, this study does not explore cross-cultural differences and the role of the entire top management team in influencing sustainability values on sustainability innovation via knowledge management practices. Practical implications This study comprehends upper-echelon factors that drive investment in knowledge management and sustainable innovation practices. Findings imply that CEOs with past and future temporal focus can influence sustainable innovation, but their investment in knowledge management strategies differs. Past temporal-focused CEOs invest more in exploitative and future temporal focus more in explorative knowledge management for influencing sustainable innovation. Originality/value The study provides novel insights into the influence of upper-echelon traits on knowledge management and sustainable innovation practices. Extant literature has largely explored firm-level factors such as organizational culture influencing a firm's knowledge management practices. However, by integrating the upper echelon with the knowledge-based view of the firm, we explain how the traits of the CEO, especially the temporal perspective, influence knowledge management and sustainable innovation practices of firms.

Study on stochastic convergence of China’s carbon emission efficiency

ABSTRACT Carbon emission efficiency (CEE) and its stochastic convergence are important indicators for achieving the strategic goal of carbon peaking and carbon neutrality. Thus, this paper firstly estimates the CEE of 30 provinces in China from 1995 to 2019 with the super efficiency of the SBM model. Then the panel unit root test method is adopted to test its stochastic convergence. The results show that the overall CEE has not reached the effective level, and the CEE level varies greatly among regions. There is a stochastic divergence of CEE in most regions from 1995 to 2001. While the CEE of most regions changes to convergence after 2002. From 1995 to 2019, the CEE of the western, northeast, and southwest regions diverge. While the CEE of the national level, the eastern, central regions, and the other six regions in the eight major economic zones converged stochastically. Among the divergent areas, the CEE of Heilongjiang, Guangxi, and Sichuan provinces are the main contributors to the CEE divergence. Therefore, it is the key to narrowing the differences in regional low-carbon development in China by significantly improving the CEE of each province.

Agronomic performance of cowpea cultivars in first crop in Southwest of Minas Gerais, Brazil

The cowpea (Vigna unguiculata (L.) Walp.) is well adapted to high temperatures, water deficits and low fertility soils, being widely cultivated in regions less favorable to common beans. Its grains are rich in proteins, vitamins and minerals, representing an important food source and a promising alternative for producing protein at low cost, in a short space of time, given the precocity of its cycle. However, in the state of Minas Gerais there is only a recommendation for one cowpea cultivar, the Poços de Caldas cultivar. In addition to being quite old, it is no longer found in crop production fields. The aims of study was to evaluate the agronomic performance of cowpea cultivars and to recommend cultivars adapted to cultivation in edaphoclimatic conditions of Southwest Region of Minas Gerais State, Brazil. The experiments were carried out in Passos city, Minas Gerais State, Brazil, during the first crop period, in 2021/2022 and 2022/2023 years, with 10 commercial cowpea cultivars, in a randomized block experimental design, with five replications. The mass of a thousand seeds and the grain index correlated directly with the yield. Cultivars with the lowest grain yields promoted the highest pod lengths and number of grains per pod. The best morphophysiological results for cowpea were obtained in 2021/2022 year. The most adapted cowpea cultivars for period of first crop in edaphoclimatic conditions of Southwest Region of Minas Gerais State, Brazil, were BRS Novaera, BRS Guariba, and BRS Xique-Xique and least indicated was BRS Marataoã. More studies are needed to consolidate cowpea cultivation in the Southwest Region of Minas Gerais, mainly in second-crop crops.