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Based on climate issues and carbon emissions, this study aims to promote low-carbon consumption and compel consumers to actively shift to energy-saving appliances. In this big data era, online reviews in social and electronic commerce (e-commerce) websites contain valuable product information, which can facilitate firm business strategies and consumer comparison shopping. This study is designed to advance existing research on energy-saving refrigerators by incorporating machine learning models in the analysis of online reviews to provide valuable suggestions to e-commerce platform managers and manufacturers to effectively understand the psychological cognition of consumers.

This study proposes an online e-commerce review mining and management strategy model based on “data acquisition and cleaning, data mining and analysis and strategy formation” through multiple machine learning methods, namely, Bayes networks, support vector machine (SVM), latent Dirichlet allocation (LDA) and importance–performance analysis (IPA), to help managers.

Based on a case study of one of the largest e-commerce platforms in China, this study linguistically analyzes 29,216 online reviews of energy-saving refrigerators. Results indicate that the energy-saving refrigerator features that consumers are generally satisfied with are, in sequential order, logistics, function, price, outlook, after-sales service, brand, quality and space. This study also identifies ten topics with 100 keywords by analyzing 18 different refrigerator models. Finally, based on the IPA, this study allocates different priorities to the features and provides suggestions from the perspective of consumers, the government and manufacturers.

In terms of limitations, future research may focus on the following points. First, the topics identified in this study derive from specific points in time and reviews; thus, the topics may change with the text data. A machine learning-based online review analysis platform could be developed in the future to dynamically improve consumer satisfaction. Moreover, given that consumers' needs may change over time, e-commerce platform types and consumer characteristics, such as user profiles, can be incorporated into the model to effectively analyze trends in consumers' perceived dimensions.

This study fills the gap in previous research in this field, which uses small-sample data for qualitative analysis, while integrating management ideas and proposes an online e-commerce review mining and management strategy model based on machine learning methods. Moreover, this study considers how consumers' emotional and thematic preferences for products affect their purchase decision-making from the perspective of their psychological perception and linguistically analyzes online reviews of energy-saving refrigerators using the proposed mining model. Through the improved IPA model, this study provides optimizing strategies to help e-commerce platform managers and manufacturers.

The COVID-19 pandemic has caused a dramatic impact on energy supply and demand. It is vital to understand households’ behaviour with regard to energy, particularly during the pandemic, to deploy future sustainable energy systems. This study aims to investigate the nexus of Malaysian households’ energy consumption behaviour in relation to various electrical appliances, their energy-saving appliance purchasing behaviour and their current possession of energy-saving appliances during the pandemic, especially during the lockdown period, from the perspective of the energy cultures framework.

The partial least squares structural equation modelling technique was used to test hypothesised relationships based on the 1,485 pieces of household data collected using an online and physical survey during the lockdown period in Malaysia.

The energy-saving behaviour cultivated due to the impact of the COVID-19 pandemic led to residential customers’ intentions to purchase energy-saving appliances which subsequently led to their current possession of energy-saving appliances. Indeed, energy-saving behaviours in the kitchen, entertainment, office, home lighting and cooling appliances have more than 77.4% influence on their purchasing behaviour. The consumer’s purchase behaviour for energy-saving appliances has a significant, partially mediating influence on the energy-saving behaviour of various electrical appliances and the consumers’ current possession of energy-saving appliances.

This study could be enhanced by improving the sample using a higher-income group and involving other parts of Malaysia such as the southern region. The findings do extend the energy cultures framework by demonstrating the mediating role of households’ energy-saving appliance purchasing behaviour on the relationship between their energy consumption behaviour in relation to various electrical appliances and their current possession of energy-saving appliances.

The results of this study will help develop future action plans for transitioning to energy-saving appliance practices.

This paper examines the effects of the COVID-19 pandemic on future energy efficiency practices in developing countries from the perspective of the energy cultures framework.

There is an unresolved paradox concerning electricity energy-saving behaviour. On one hand, there are many studies on energy-saving behaviours and on the other hand, recent research stresses that there exists large amount untapped potential in terms electricity energy-saving behaviours. Therefore, it becomes pertinent to revisit the construct of electricity energy-saving behaviours qualitatively to enlarge the spectrum of understanding. The purpose of this paper is to answer the research question why do not customers care about electricity energy-saving behaviours.

A qualitative study is undertaken in Western India using grounded theory methodology. The basic steps in the analysis of qualitative data consist of coding the data, combining the codes into broader categories and themes, and interpreting the results.

The study identifies seven categories of determinants of electricity energy-saving behaviours. Policy implications and limitations of the study are discussed along with areas of future research directions.

This is the first study to unearth the dimensions of electricity energy-saving behaviour.

We aim to comb the current policies that have been developed to promote the environmental industries in China and analyze them in a comparative manner.

We mainly use the method of text study to study the existing policies that Chinese central government published to promote the development of environmental industry. We built a database of policies and regulations from 1979 to 2015 by searching the official website of the Ministry of Environmental Protection of China.

We find that the existing policies focus on command and control approaches. Policies are more oriented to the stage of production instead of stages of investment and consumption. They rely more on negative incentive when stimulating supply and positive incentive when encouraging demand. Based on existing academic wisdom, we suggest that Chinese government should pay more attention to environmental economic policy and to stimulating demand for environmental products.

Few studies provide a systematic overview of the policy systems that have been developed to promote environmental industry in China in a systematic manner.

This paper aims to examine contextual factors affecting intention to purchase energy-saving products (ESPs), via a research model integrating environmental awareness, perceived performance risk and perceived financial risk with the theory of reasoned action (TRA).

In total, 474 targeted Jordanian householders completed a structured survey, providing data for exploratory and confirmatory factor analyses and for structural path analysis to test the research model and hypotheses.

Attitude most strongly predicts purchase intention. Environmental awareness positively influences subjective norms and reduces perceived performance and financial risks, which are related to purchase intention.

This research examines perceived performance and financial risks. Others including social and physical risks have research potential. Future research on international marketing strategy and cross-cultural consumer behavior could compare Jordan with its oil-producing neighbors.

Environmental awareness affects ESP purchase intention. Marketing strategy should focus on reducing perceived functional and financial risks while enhancing subjective norms by encouraging positive word of mouth.

The findings enhance environmental sustainability by indicating ways of reducing energy consumption and increasing the usage of environmentally friendly products. The study addresses behavioral and social aspects of green products, whereas most ESP suppliers focus on technology.

The study’s major theoretical contribution is incorporating perceived risk and environmental awareness into the TRA to better understand intention to purchase ESPs. Empirically, it conceptualizes and tests an integrated model of determinants of attitudes and intentions with new insights from an emerging market.

Under the dual pressure of resources and environment, many countries have focused on the role of railways in promoting low-carbon development of integrated transportation and of even the whole society. This paper aims to provide a comprehensive study on methods to improve railway energy efficiency in other national railways and achievements made by China’s railways in the past practice, and then to propose ways in which in the future China’s railways could rationally select the path of improving energy efficiency regarding the needs of the nation's ever-shifting development and carry out the re-engineering for mechanism innovation in energy conservation and emission reduction process.

This paper first studies other national railways that have tried to promote the improvement of railway energy efficiency by the ways of technology, management and structural reconstruction to reduce energy consumption and carbon emissions. Among them, the effect of structural energy conservation and emission reduction has become more prominent. It has become the main energy conservation and emission reduction measure adopted by foreign railway sectors. The practice of energy conservation and emission reduction of railways in various countries has tended to shift from a technical level to a structural one.

Key aspects in improving energy efficiency include re-optimization of energy structure, re-innovation of energy-saving technologies and optimization of transportation organization. Path selection includes continuing to promote electrified railway construction, increasing the use of new and renewable energy sources, and promoting the reform of railway transportation organizations.

This paper provides further challenges and research directions in the proposed area and has referential value for the methodologies, approaches for practice in a Chinese context. To achieve the expected goals, relevant supporting policies and measures need to be formulated, including actively guiding integrated transportation toward railway-oriented development, promoting innovation in energy-saving and emission reduction mechanisms and strengthening policy incentives, focusing on improving the energy efficiency of railways through market behavior. At the same time, it is necessary to pay attention to new phenomena in the railway industry for track and analysis.

This paper attempts to study the impact of changing incentive strategies on enterprises' energy saving effort level and to construct an effective principal‐agent mechanism to achieve Pareto improvement of energy‐saving control.

Starting from the benefit relations between government and enterprises as well as their game strategies in energy conservation management, the impact of changing incentive strategies on enterprises' energy saving effort level and the asymmetric information situation of the players are studied taking into consideration the angle of strategies evolving in local government. Also, an effective principal‐agent mechanism to achieve Pareto improvement of energy‐saving control is constructed.

The results are convincing: interests of both the principal and agent had consistency under the principal‐agent mechanism, and the principal‐agent model was a mechanism with rich efficiency that could substantially arouse the enthusiasm of enterprises in energy saving. The comprehensive supervision of local governments over enterprises could effectually eliminate ill effects on energy‐saving management caused by information asymmetry under certain circumstances.

It is good for locating the balance of interest of game players by building a government energy saving mechanism based on principal‐agent theory. Through solving a game stable strategy, it is beneficial to seize a key point of regulation and control policies.

The paper succeeds in analyzing decision behaviours of government and enterprises through the basic idea of cooperative game theory so as to make actions of enterprises at all levels agree to government determined solving of energy issues.

This study aims to explore students’ sustainability attitudes and behavioural intentions and their relation to energy use, to promote energy saving and decarbonisation in higher education settings.

The authors used a validated energy literacy survey to assess undergraduate students’ attitudes and behavioural intentions towards energy saving in two countries (Brazil and Belgium). The questionnaire, administered online, comprised 23 Likert scale questions and three questions eliciting socio-demographic information. Results were analysed using a linear regression model and compared with previous research using the same energy literacy instrument.

The research identified three dimensions of sustainable attitudes: citizens’ role, scientists’ role and government’s role, explaining 65.5% of respondents’ energy-related attitudes. Three dimensions of sustainable behaviours were identified, explaining 64.5% of energy-related behavioural intentions: consumption of eco-friendly products, financially driven behaviours and household energy saving. The linear regression model identified scientists’ role, consumption of eco-friendly products and financially driven behaviour as the key predictors of student energy use. Differences between the two contexts also emerged.

Individual action to improve energy saving is necessary, but not sufficient for decarbonisation. However, student attitudes and behavioural intentions towards energy are an important element of campus decarbonisation: these “micro” experiments can become a “network” searching for synergies at the campus level (in collaboration with the neighbourhood) and act as a catalyst towards a more profound carbon-free society. Limitations of the research include the use of a survey to ascertain estimates of energy use; however, the study offers a model for further research and a mode of analysis that would be useful to other researchers.

This research enables universities to better understand the drivers and barriers to student energy-saving activities and thereby promote decarbonisation on campus. This is a crucial underpinning in the creation of sustainable universities, linking education and campus developments. This survey was one of the catalysts to set up a total new maintenance energy performance contract (MEPC) at one of the authors’ institutions, where energy efficiency was realised alongside other sustainability aspects, such as water saving, circular renovation and waste reduction.

This research illustrates the challenges and opportunities of working with key stakeholders in university settings for university-based decarbonisation efforts. Intensive involvement of students and teachers in the new MEPC offers an example of co-creation with building “users” – which may have implications for other university building developments. Increasingly, universities need to consider the need for a new business model in which shared and multiple value creation is a key feature. Treating societal challenges as business opportunities is an important new dimension of corporate strategy and a powerful path to social progress, which higher education institutions should not overlook.

Student attitudes and behavioural intentions towards energy are an important element of campus decarbonisation and can act as a catalyst towards a carbon-free society. Although energy literacy research has been undertaken in the USA and UK, this research is the first of its kind for Belgium and Brazil, and the mode of analysis – using a linear regression model – differs from the earlier work, offering a novel methodological approach.

This article seeks to investigate the interconnections between the expectations of the impact of energy certificates issued within the UK domestic building sector through the Energy Performance of Buildings Directive (EPBD) and the actual number and financial implications of the energy saving measures (ESMs) achieved.

The methodology uses two previously published surveys and compares these with a third independent survey by the authors focusing upon the discrepancies between planned action and implemented action, introducing the term human factor element (hfe).

The article concludes that annual carbon savings arising from implementation of the Energy Performance Certificate (EPC) may be as low as 73.4 ktC over the five year term of the Kyoto Protocol even though 44 per cent of energy saving measure costs of £200 million are recouped within the same time period and savings will continue for up to 40 years. Achieving annual savings of only 14.7 ktC by 2010, such a figure represents a mere 0.3 per cent of the annual domestic 4.8 MtC savings announced by the government in its 2006 Climate Change Programme.

Since the principal determinant in the uptake of ESMs is initial cost, it is considered that the EPBD is likely to remain an under‐performing instrument in the promotion of energy sufficiency until such time as other complementary provisions are introduced.

Sheds light upon the likely financial impact upon energy efficiency in domestic buildings by energy certificates.

A considerable amount of research suggests that the way information is processed may influence a purchasing decision; however, this seems to be an issue rarely investigated in green marketing studies. Therefore, the purpose of this paper is to draw on the literature related to the Heuristic-Systematic Model of information processing to provide a deeper insight into the factors affecting pro-environmental behavior intention.

The framework highlights the moderator role of environmental motivation and environmental knowledge in the relationships among message framing and pro-environmental behavior intention. The study used an internet survey to help reduce the social desirability bias associated with a face-to-face survey. In total, 497 questionnaires were collected, of which 68 were invalid and 429 were valid.

The results indicate that it might be beneficial for green marketing proprietors to provide product-related information stressing the potential negative consequences of not buying organic food products. This effect, however, is moderated by the degree of the customer’s environmental motivation and environmental knowledge.

This stands in marked contrast to the traditional information which emphasizes the positive consequences to motivate customers to purchase organic food products.