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In response to the problem of insufficient traction/braking adhesion force caused by the existence of the third-body medium on the rail surface, this study aims to analyze the utilization of wheel-rail adhesion coefficient under different medium conditions and propose relevant measures for reasonable and optimized utilization of adhesion to ensure the traction/braking performance and operation safety of trains.

Based on the PLS-160 wheel-rail adhesion simulation test rig, the study investigates the variation patterns of maximum utilized adhesion characteristics on the rail surface under different conditions of small creepage and large slip. Through statistical analysis of multiple sets of experimental data, the statistical distribution patterns of maximum utilized adhesion on the rail surface are obtained, and a method for analyzing wheel-rail adhesion redundancy based on normal distribution is proposed. The study analyzes the utilization of traction/braking adhesion, as well as adhesion redundancy, for different medium under small creepage and large slip conditions. Based on these findings, relevant measures for the reasonable and optimized utilization of adhesion are derived.

When the third-body medium exists on the rail surface, the train should adopt the low-level service braking to avoid the braking skidding by extending the braking distance. Compared with the current adhesion control strategy of small creepage, adopting appropriate strategies to control the train’s adhesion coefficient near the second peak point of the adhesion coefficient-slip ratio curve in large slip can effectively improve the traction/braking adhesion redundancy and the upper limit of adhesion utilization, thereby ensuring the traction/braking performance and operation safety of the train.

Most existing studies focus on the wheel-rail adhesion coefficient values and variation patterns under different medium conditions, without considering whether the rail surface with different medium can provide sufficient traction/braking utilized adhesion coefficient for the train. Therefore, there is a risk of traction overspeeding/braking skidding. This study analyzes whether the rail surface with different medium can provide sufficient traction/braking utilized adhesion coefficient for the train and whether there is redundancy. Based on these findings, relevant measures for the reasonable and optimized utilization of adhesion are derived to further ensure operation safety of the train.

The purpose of this paper is to explore an association between women experience lifetime intimate partner violence (IPV) and women decision making with utilization of reproductive and maternal health services in Cambodia.

An analysis of secondary data of Cambodia Demographic and Health Survey (CDHS) 2014. The total number of sample size was 1,539 married women who had birth in the last five years prior to the time of interview and completed the domestic violence module in the CDHS 2014 questionnaire. χ² test and binary logistic regression were performed in this study.

Results give an evidence that emotional violence had significant impact on receiving sufficient antenatal care (ANC) (OR: 0.7, 95%CI: 0.43–0.86) while physical violence had significant association with deliver with skilled birth attendance (SBA) (OR: 0.5, 95%CI: 0.27–0.79). Further, women’s participation in household decision making played as important factor in enabling women revive sufficient ANC (OR: 1.7, 95%CI: 1.19–2.29), and utilization of modern contraceptive method (OR: 1.5, 95%CI: 1.09–1.97).

This study provides significant finding on the impact of IPV and women’s decision making on reproductive and maternal health in Cambodia. Result has drawn an attention to policy makers, related ministries and stakeholder to promulgate and effectiveness of policies and program implementation within the country.

Transplantation extends and improves lives, but the shortage of organs is one of the main factors limiting the number of transplants in Italy, as well as in other countries. This study investigated the awareness about organ donation and the socio-demographic factors associated with donation will in a general population.

In 2019, a survey was carried out by computer-assisted web interviewing. A questionnaire was sent via e-mail to 39,360 individuals (i.e. students, administrative and teaching staff of the University of Milano-Bicocca, Italy). The response rate was 10.6% and 4,191 weighted cases were used in the analysis.

This study showed a strong, positive attitude towards donation: over 96% of respondents stated to be keen on organ donation. Of the respondents, 40.8% considered themselves informed on medical procedures involving organ donation, and only 15.8% thought to have sufficient legal information. Overall, only 17.7% of respondents thought that the information available was sufficient to make informed decisions. According to the respondents, ethical and religious implications were the main reasons (30% of answers) that limited the level of information. Just 57.9% of respondents had already recorded their willingness to donate. Among them, renewal of the identity card was the most common motivation (55.8%) and the main motivation reported for lack of expression of donation will was the lack of opportunity or time (61.5%).

A positive attitude towards donation demands a wide public education programme and opportunities to declare one's will to donate to increase the population of potential organ donors.

The purpose of this paper is to increase the understanding of customer share of wallet (SoW) based on research in customer characteristics and the retail service quality model. Specifically, this study adopts an asymmetrical modelling approach to provide insights into the necessary and sufficient conditions leading to increased customer SoW in the context of neighbourhood shops in Southern Africa.

This study uses fuzzy-set qualitative comparative analysis to analyse survey data collected from 523 current customers of the shops.

This study reveals that large household size and low income are necessary conditions for increased SoW. It also reveals five unique customer profiles, or casual recipes, associated with increased customer SoW. More generally, this study demonstrates that service quality constituents (personal interaction, reliability, policy and physical aspects of the shop) and customer characteristics, namely, relationship duration, household size, gender and income-level act in combination to lead to customer SoW.

This study illustrates how service quality constituents and customer characteristics compete and/or complement each other in relation to increased customer SoW. To the best of the author’s knowledge, this is the first study to provide evidence on the necessary conditions for increased SoW, especially in the neighbourhood shop context of a developing economy. Value-wise, this paper provides a more nuanced perspective to understanding how unique customer profiles are associated with increased SoW.

The results of this study have significant policy implications for charting a new course toward enhancing agricultural productivity among Chinese farmers.

By establishing a rural household decision-making model based on the transfer market of farmland operation rights, this paper systematically analyzes the effects of land transfer-in and land transfer-out on the productivity (per labor income) of rural households. The authors conducted basic regression analysis and robustness tests using propensity score-matching and proxy variable approaches based on the micro survey data from rural households in 30 counties in 21 provinces/municipalities/autonomous regions in 2013.

After the completion of land transfer, the total productivity of rural households transferring in lands will increase with an increase in the agricultural productivity; the total productivity of rural households transferring out land will increase due to a rise in non-agricultural productivity and the absolute total productivity of rural households not involved in land transfer will remain unchanged.

Unlike previous literature, this paper discusses the impacts of land transfer-in and transfer-out on total productivity, agricultural productivity and non-agricultural productivity among various rural households (i.e. those transferring in land, transferring out land or which are self-sufficient).

The diffusion of electronic commerce has a notable impact on the economy's prosperity. This paper embraces complexity theory principles to examine the factors affecting Internet users' acceptance and use of electronic retailers. It is essential for the sustainability of electronic retailers to understand the motivations impacting online consumer behaviour. Symmetrical and asymmetrical methods are combined to examine the relationship between perceived ease of use, perceived enjoyment, web characteristics, online consumer reviews (OCRs) and online purchase intention. Further, symmetry and differences between males and females were examined.

Data collected from 425 online consumers using an online structured survey was analysed using structural equation modelling (SEM) and fuzzy set qualitative comparative analysis (fsQCA). The net effects and causal configurations of the four proposed variables and online purchase intention were examined.

The SEM findings confirmed the significance of perceived enjoyment, website characteristics and OCRs on online purchase intention. Perceived enjoyment mediated the relationship between perceived ease of use and online purchase intention. The multi-group analysis confirmed the difference in antecedent impacts between males and females. The fsQCA findings revealed that multiple recipes lead to the occurrence of online purchase intention; in addition, the recipes leading to its absence do not mirror the previous ones.

The present study embraces complexity theory concepts in understanding online purchase intention using fsQCA methodology; further, the role of gender in online consumer behaviour was highlighted in the result discussion.

The purpose of this paper is to examine the determinants and convergence of government effectiveness in African and Asian countries.

The study utilizes data from 100 countries in Africa and Asia from 2002 to 2018. The panel-corrected standard error regression is used for the regression analysis, while both beta-convergence and sigma-convergence among the countries are tested.

Both beta-convergence and sigma-convergence exist among African and Asian countries. Asia performs better than Africa across all indicators except for press freedom, and voice and accountability. Corruption perception index, government size, voice and accountability, regulatory quality and economic wealth have a significant positive effect on government effectiveness. Press freedom negatively impacts on government effectiveness, suggesting that freedom is necessary but not sufficient if there are political actors whose actions undermine freedom. Similarly, the political constraint index, as reflected by checks and balances are necessary but not sufficient to enhance government effectiveness, especially in Asia.

The results reveal that for press freedom and political checks and balances to enhance government effectiveness, there is a need for a different and holistic approach. The results are relevant for policymakers, public sector practitioners and academics.

This study utilizes a new dataset and is premier in exploring the convergence of government effectiveness among African and Asian countries.

Defence supply chains (SCs) aim at operational outcomes, and armed forces depend on them to provide availability and preparedness in peace and sustainability in war. Previous research has focussed on strategies for SCs aiming at financial outcomes. This raises the question of how suitable commercial supply chain strategies (SCSs) are for supply chain design (SCD) in defence. The purpose of this paper is to explain the constructs of SCSs that satisfy military operational requirements and to propose SCSs that are appropriate in defence.

This paper reports on a Delphi study with 20 experts from Swedish defence authorities. Through three Delphi rounds, two workshops and a validation round, these experts contributed to the reported findings.

The findings demonstrate that commercial SC constructs are acceptable and applicable in defence but not sufficient. An additional strategy is required to satisfy requirements on availability, preparedness and sustainability. The paper shows that different requirements in peace and war make it challenging to design suitable defence SCs and proposes eight SCSs that satisfy these requirements.

The results emanate from the Swedish defence context and further research is required for generalisation.

This paper extends theory by investigating SCs aiming at operational outcomes. For managers in companies and defence authorities, it explicates how the unique issues in defence must influence SCD to satisfy operational requirements.

This paper aims to determine the status of the socialist market economy through a logical analysis of the evolution of economic systems in human society.

This paper presents an analysis of uncertainty and the functions performed by different economic systems in managing and resolving it, thereby explaining the evolutionary rationale behind economic system evolution.

Firstly, the socialist market economy empowers the market to play a decisive role in resource allocation, which serves as the foundation for activating individuals' motivation to engage in economic activities. Secondly, the socialist market economy adheres to the basic socialist economic system, which is the basis for the socialist market economy to stabilize the economy and society or to address the risk of economic uncertainty that may trigger macro-level inconsistencies in economic operations. Thirdly, the advantages of a socialist market economy in adapting to economic uncertainties do not arise spontaneously and must be exerted through continuous improvement of the socialist market economy.

The innovation of this paper lies in introducing uncertainty to clarify the logic behind the evolution of economic systems in human society and explaining the typical significance of the socialist market economy and its advantages in accommodating and resolving uncertainty.

It is important to note that insider trading is currently outlawed under the Securities Act 17 of 2004 (Chapter 24: 25) as amended (Securities Act) in Zimbabwe. This Act enumerates some practices that may give rise to insider trading liability in the Zimbabwean financial markets. Nonetheless, numerous challenges, such as the lack of adequate financial resources, the lack of sufficient persons with the relevant skills and expertise on the part of the enforcement authorities, lack of political will, inadequacy of insider trading provisions, poor cooperation and collaboration between the relevant authorities and the ongoing coronavirus (Covid-19) pandemic have negatively impeded the effective regulation and combating of insider trading in Zimbabwe. To this end, the author explores the stated challenges and recommend measures that could be used by regulatory bodies and other relevant enforcement authorities to enhance the regulation and combating of insider trading in the Zimbabwean financial markets. This study aims to enhance the detection and combating of insider trading in Zimbabwe.

A qualitative research methodology is used through the analysis of relevant legislation and case law.

It is hoped that the findings and recommendations made in this study will be considered by the Zimbabwean policymakers.

The study does not use empirical research methodology.

The findings and recommendations made in this study could enhance the combating of insider trading activities in Zimbabwe.

The study seeks to curb insider trading in the Zimbabwean financial markets and financial institutions in the wake of the covid-19 pandemic-related regulatory and enforcement challenges.

The study provides original research on the regulation and combating of insider trading activities in Zimbabwe.