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The concept of child-friendliness has appeared in numerous research studies concerning sustainability and the wellbeing of children. For this critical review of child-friendly environments (CFEs), an evaluation framework of CFEs has been developed, consisting of four principal experiential categories: sociality, wellness, development, and independence of children. Despite considerable research on CFEs since the middle of the twentieth century, there have been few evaluations of CFEs focusing on children’s experiences in relation to the physical environment. Through an exhaustive analysis of selected papers in this research, it was found that most papers have focused on the physical experiences of children, rarely mentioning the emotional experiences of children in relation to the physical environment. The environmental experiences of children are very critical for a balanced development in their emotional, physical, and intellectual comprehension. Therefore, research on CFEs should consider the balanced emotional, physical, and intellectual development of children. This research critically highlights the aspects of children’s experiences to be addressed in CFEs research, exploring valuable insights into the environmental cognition of children and their development. A better understanding of children and an interpretative analysis of their experiences will lead to adequately balanced CFEs, creating sustainable environments.

Housing environments should enable residents to have positive experiences through the allocation of diverse green environments, which lead to physically and mentally happy, healthy living. Such positive experiences affect their happiness level, thus leading to sustainable lives. However, in Korea, since the 1980s, the design of housing complexes has been overly focused on their economic and iconic value, while the importance of residents' experiences has been ignored in the living environment. This research explores categories of green environments in accordance with their scale and purpose of use and evaluates green environments in housing areas by focusing on the residents' happiness levels. Further, this research examines the correlation between green environments and residents' happiness level and the effect of green environments on their sociality satisfaction level.The results indicate that green environments and happiness levels are critically correlated. Through the results, this research emphasizes the importance of providing structural and strategic planning of green environments in housing areas for residents' happiness, and thus their sustainable lives.

Technological innovation and stable customer relationships are both important factors for the sustainable development of enterprises. However, it remains unclear whether there is a relationship between stable customer relationships and technological innovation. In this work, we manually collected data regarding customer relationships and the innovation of manufacturing companies listed in the A-Share index in China from 2009 to 2016. Through empirical analysis, this work used a two-way fixed effect model and intermediary effect model tests to explore the impact of stable customer relationships on technological innovation. The empirical research found the following. (1) Stable customer relationships significantly promote the technological innovation of enterprises, and the empirical results are still valid after a variety of robust tests. The competitive advantage of enterprises forms a part of the intermediary role in the relationship above. (2) Comparing the samples of large-scale enterprises, state-owned enterprises, mature enterprises, and low-capital-intensive enterprises, the research found that stable customer relationships can significantly promote corporate technological innovation in small-scale enterprises, non-state-owned enterprises, young enterprises, and highly capital-intensive enterprises. This article enriches and deepens our understanding of the mechanism by which stable customer relationships affect enterprises’ technological innovation. At the same time, this research is helpful for better evaluating the impact of establishing a stable customer relationship on the sustainable competitive advantage of enterprises.

Enhancing environmental management is an theoretical basis for the government developing a reasonable important way to realize sustainable development of enterprises, policy. and cleaner production is an effective method of environmental management. However, currently, lacking of effective and Ⅱ The Theoretical Basis of Designing Incentive Policy by the rational incentive mechanism makes the oil and gas field Government enterprises are lack of motivation to launch the cleaner production. According to the production reality of oil and gas Information economics is the application of asymmetric field enterprises, using the analytical framework of information information game theory in economics. It is study the optimal asymmetry theory, this paper studies the government's incentive transaction contract arrangement, During the process of policies when the enterprises want to realize single-objective and environmental management in oil and gas enterprises, we can multi-objective under different environmental management treat enterprises as agents, the government as the principal. In policies. Under the control&command and Economic arousal this principal-agent relationship, the principal rewards or types of environmental management policies.penalties the agents according to observed information, to motivate them to choose the behaviors which have the most Keywords-sustainable development; oil and gas fieldadvantage to the principal. If the principal and agent's enterprises; environmental management; cleaner production; cognition on the production of technology and the utility incentive policy; function are the same, then the principal's expected utility function can be expressed as follows: I.