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We examined the reciprocal relationship between loneliness and generalized pathological Internet use (GPIU) with a sample of 361 (141 men and 220 women, Mage = 18.47 years) university freshmen in China. A fully cross-lagged panel design was used, in which loneliness
and GPIU were assessed at 3 time points. The results were as follows: (a) GPIU had a higher level of stability than did loneliness, and (b) the relationship between loneliness and GPIU was dynamic and bidirectional. Specifically, loneliness positively predicted GPIU across time, GPIU at Time
2 (3 months after initial measurement) positively predicted loneliness at Time 3 (6 months after initial measurement), and the link between baseline loneliness and Time 3 loneliness was mediated by increased GPIU at Time 2. Our findings have implications for the treatment and prevention of
GPIU in university freshmen.

Private investors have been encouraged to participate in the development and operation of urban rail projects in China through Public-Private Partnerships (PPPs), given the fact that subnational governments are suffering from urgent development demands and severe fiscal pressure. However, there is no formal assessment to determine the private involvement in a PPP project. This problem is particularly critical in the sector of urban rail, in which the huge investment cannot rely on the private sector alone. This study hence aimed to uncover and identify the influencing factors. Multiple research methods, including content analysis, case study and focus group discussion were adopted to achieve the research purpose. Seven types of influencing factors were identified, including project financial model, government fiscal commitment, risk allocation, public accountability, efficiency considerations, policy and regulations, and organisational marketing strategies. The findings add to the current knowledge base by uncovering the drivers behind private involvement in a PPP project. They are also beneficial for industry practitioners as a basis/checklist to determine the private involvement.

Although many countries around the world, especially China, highlight the strategy of green development, there has been little research evaluating the effectiveness of green development policies in local area. This study explores 16 policy texts with the theme of green development in the Yangtze River Economic Belt in China. Using the Policy Modeling Consistency Index (PMC-Index) model, the paper establishes a multi-input–output policy table and scientifically and systematically evaluates these policies. The results show that the average PMC index of the 16 policy texts is 6.83, indicating a high overall quality of policy texts. The index identifies two states of policy effectiveness as being good and excellent; 50% of the total texts fall into these categories and do not fall into the category of having a low level of policy effectiveness. Five indicators, including policy timeliness, social benefits, policy audience scope, and incentives and constraints, significantly impact the PMC-Index of the policy. Six representative policy samples were selected and analyzed. The advantages and disadvantages of the policy can be more fully understood by the degree of depression of the PMC's three-dimensional curved surface (PMC-Surface) model. Finally, the paper provides theoretical recommendations for the optimization of the green development policies.

Life Science is a science to understand the phenomena of life and reveal the essence of life, which contains abundant philosophical elements, especially the elements of dialectical materialism thinking. Putting dialectical thinking into teaching can help to improve students' ability to analyze and solve problems, and develop students' innovative thinking. However, how to innovate teaching methods and improve the dialectical thinking ability of college students is an important issue that college teachers urgently need to solve. Taking the course of molecular biology as an example, this paper analyzed in detail the materialist dialectic elements contained in the course, explored the teaching mode of integrating dialectical thinking into professional courses, constructed the "1 + 3" innovative teaching method, and elaborated the specific teaching path. The aim was to guide and train students to interpret the laws of life phenomena using dialectical thinking, explore students' potential for philosophical speculation, and achieve students' all-round development.