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This paper aims to examine the uniform diffracted fields from a perfectly magnetic conductive (PMC) surface with the extended theory of boundary diffraction wave (BDW) approach.

Miyamoto and Wolf’s symbolic expression of the vector potential was used in the extended theory of BDW integral. This vector potential is applied to the problem, and the nonuniform field expression found was made uniform. Here, the expression is made uniform, using the detour parameter with the help of the asymptotic correlation of the Fresnel function. The BDW theory for the PMC surface extended the diffracted fields, and the uniform diffracted fields were calculated.

The field expressions obtained were interpreted with the graphs numerically for different aperture radii and observation distances. It has been shown that the BDW is continuous behind the diffracting aperture. There does not exist any discontinuity at the geometrically light-to-shadow transition boundary, as is required by the theory.

The results were graphically compared with diffracted fields for other surfaces. As far as we know, the uniform diffracted fields from the circular aperture on a PMC surface were calculated for the first time with the extended theory of the BDW approach.

This study aims to extend the theory of planned behaviour (TPB) model to explain youth’s recycling behavioural intentions in India. Perceived moral obligation (PMO) to perform such pro-environmental activities is incorporated in the TPB model. The study also aims to validate the extended version of TPB models with direct and indirect relationships and identify the best competing model among original TPB, extended TPB model “Model A” (moral obligation is an explanatory variable to recycling behaviour) and extended TPB model “Model B” (moral obligation as an explanatory variable to attitude, perceived behavioural control [PBC] and recycling behavioural intentions; and responsive variable to subjective norms) to predict Indian youth’s waste recycling behaviour.

The descriptive study adopted a hypo-deductive research design to test the proposed extended TPB models. The study used a survey research design with a structured questionnaire. A sample of 782 youth with a mean age of 18 was obtained to perform the correlational analysis. The scale validity and reliability are measured using structural equation modelling and identified the robust model with higher explanatory power using the Chi-square difference (Δχ²) statistic test.

Results show that the extended TPB model “Model B” has a better fit and explanatory power than competing models to predict the waste recycling behaviour of youth. Further findings substantiate that PMO has a higher indirect effect on recycling intention. Model B supports the utility of moral obligation and its association with youth’s higher waste recycling intention and actual recycling behaviour.

The study considers solid waste recycling in general, and therefore future research should test the proposed model specific to other household wastes like water recycling. Furthermore, future studies can experiment with the model with additional variables like perceived relative benefits, social benefits, self-efficacy and education level of the respondents. In a strict sense, the research concern the respondents and the generalisation to a broader population should be made with caution. Hence, further studies in various geographical areas with larger sample sizes would allow the generalizability of the results.

This research provides insights into PMO and its influence on recycling intention. Promoting waste recycling behaviour through campaigns, social pressure and accepting the phenomena of “significant others” will encourage better waste recycling behavioural purposes. Indian households who are highly concerned and obliged towards environmental protection would develop favourable attitudes and subjective norms towards waste recycling.

The study proved the effect of subjective norms on intentions. This contention explains that recycling mostly happens within the house and is mostly not witnessed by society and friends. Therefore, adopting waste recycling behaviour is not socially acceptable as they are not fully aware of its benefits. Policymakers should create awareness to develop environmental-friendly behaviour through recycling solid waste and develop exclusive campaigns to sensitise the negative impact on the environment.

The study’s originality is to test the extended TPB model “Model B”, with PMOs as an additional key variable, which has higher explanatory power to predict the youth’s waste recycling behavioural intentions in the Indian context. PMO found a positive and significant effect on attitude, PBC and recycling behavioural intentions. The higher indirect result of PMO on behavioural purposes through TPB variables indicates the importance of personal moral obligation in pro-environmental behaviour.

The purpose of this paper is to design an enhanced routing protocol to minimize energy consumed and extend network lifetime in sensor network (WSN).

With the use of appropriate routing protocols, data collected by sensor nodes reache the BS. The entire network lifetime can be extended well beyond that of its single nodes by putting the nodes in sleep state when they are not in use, and make active just a single node at a time within a given area of interest. So that, the lowest-cost routing arises by minimizing the communication cost. This paper proposes an enhanced adaptive geographic fidelity (E-GAF) routing protocol based on theory of graphs approach to improve the discovery phase, select the optimal path, reduce the energy used by nodes and therefore extend the network lifetime. Following the simulations established by varying the number of grids and tests, a comparison is made between the E-GAF and basic GAF (B-GAF) based on the number of dead nodes and energy consumption.

The results obtained show that E-GAF is better than the existing basic GAF protocol in terms of energy efficiency and network lifetime.

This paper adopts the latest optimization algorithm know as E-GAF, which is used to solve the problem of energy and improve the network lifetime in a WSN. This is the first work that utilizes network lifetime in WSN.

Several waste bin sanitation initiatives have been introduced in Ghana to address the surge in indiscriminate solid waste disposal in households. What is not known are the behavior factors that determine the acceptability and use of waste bins. This study aimed to identify the determinants of waste bin acceptability and use in Ghana using the theory of planned behavior (TPB).

Data on waste bin acceptability and usage were collected from 881 households in the Volta and Oti regions of Ghana. The data were analyzed using the partial least squares-structural equation modeling technique in SmartPLS 3 software.

The coefficient of determination (R-squared value) of the original TPB and the extended model explained 39.9 and 44.7% of the variance in waste bin acceptability and use intentions, respectively. The results revealed that attitudes (ß = 0.114, t = 3.322, p < 0.001), subjective norms (ß = 0.306, t = 6.979, p < 0.001) and perceived moral obligation (ß = 0.352, t = 8.062, p < 0.001) significantly predicted household waste bin acceptability and use behavior intentions, but perceived behavioral control (ß = −0.003, t = 0.064, p < 0.949) did not influence behavior intentions significantly.

The study provides valuable insights into the behavioral factors to be prioritized by waste management service providers to improve household waste bin acceptability and usage.

This is one of Ghana's first studies investigating the behavioral determinants of waste bin acceptability and usage.

Approaches based on social marketing have led to the proposal of systemic interventions to achieve individual behaviour that takes into account the benefits for society as a whole. The use of plastics is having significant negative effects on the environment and so numerous policies such as the use of biodegradable packaging, have been implemented to ensure sustainable production and consumption patterns (Sustainable Development Goal 12). This paper aims to analyse the background factors that explain consumer intention to use bioplastics with the aim of guiding company and government social marketing campaigns designed to encourage such behaviour.

To gather data, a survey was carried out using a sample of 3,612 people obtained via an online panel made up of participants over 18 years of age. The model and its hypotheses were tested by structural equations with the PLS technique using six independent variables obtained from the literature review.

The results of the variables “attitude towards bioplastics”, “subjective norms” and “activity to reduce plastic use” show a significant influence on intention to use bioplastics. This paper will also discuss the implications for governments and environmental managers to be taken into account when developing social marketing campaigns.

Given the importance of perceived social pressure in terms of behaviour regarding the use of recyclable bioplastics, social marketing campaigns may be developed to encourage environmentally-responsible behaviour amongst different social agents such as consumers, businesses, governmental organisations and suppliers.

This study demonstrates the factors that explain intentions to use bioplastics, which until now had been subject to very little research.

We present a model of organizational monitoring that integrates organizational justice and information privacy. Specifically, we adopt the position that the formation of invasiveness and unfairness attitudes is a goal-driven process. We employ cybernetic control theory and identity theory to describe how monitoring systems affect one's ability to maintain a positive self-concept. Monitoring provides a particularly powerful cue that directs attention to self-awareness. People draw on fairness and privacy relevant cues inherent in monitoring systems and embedded in monitoring environments (e.g., justice climate) to evaluate their identities. Discrepancies between actual and desired personal and social identities create distress, motivating employees to engage in behavioral self-regulation to counteract potentially threatening monitoring systems. Organizational threats to personal identity goals lead to increased invasiveness attitudes and a commitment to protect and enhance the self. Threats to social identity lead to increased unfairness attitudes and lowered commitment to one's organization. Implications for theory and research on monitoring, justice, and privacy are discussed along with practical implications.

Literature review articles have become a frequently applied research approach in operations and supply chain management (SCM). The purpose of this paper aims to elaborate on four approaches for developing or employing theory in systematic literature reviews (SLRs).

The paper uses conceptual arguments and illustrates them by pointing to recent examples. In SLRs, the material collection is usually based on keywords and searching databases, which is comparatively well documented. Data analysis, however, often falls short in documentation and, consequently, is neither well explained nor replicable. Therefore, the focus of this paper is the elaboration of the data analysis and sense-making stage in the research process of SLRs.

The paper presents four different approaches, which are characterized as theory (1) building, (2) modification, (3) refinement and (4) extension, based on whether new concepts are formed or extant concepts within SCM or other fields of management theory are adopted.

The limitation of this research is that literature reviews could be conducted and presented in many ways. Since the focus of this research is on systematic literature reviews, only a limited number of approaches can be discussed and presented here.

The paper contributes to explaining the process and expected outcomes of a literature review and, therefore, aids in further developing the related methodological approaches. This is relevant as literature review publications now often replace conceptual or theoretical pieces but still have to deliver concerning demands of theory building.

The physiological and psychological issues that limit people with vision impairment make it difficult for them to participate in tourism activities and enjoy the various benefits of tourism. This study aims to construct a theoretical model of the tourism-influencing factors that can lead to problems for people with vision impairment to meet their travel desires and improve their enjoyment of life.

This study adopted a mixed-methods approach. A theoretical model of the tourism-influencing factors for people with vision impairment was constructed based on grounded theoretical analysis of interviews and was then tested in a quantitative survey.

In the first stage, a new theoretical model of the tourism-influencing factors for people with vision impairment was conducted. In the second stage, five research hypotheses arising from the theoretical model were tested in a quantitative survey. The results show that internal psychological perception, perceived behavioural control and perceived social intention have a significant positive impact on the tourism intention behaviour of people with vision impairment. However, subjective norms do not significantly influence the tourism behaviour intention of people with vision impairment.

The right to tourism should be available to disabled as well as to able-bodied people. Few tourism research studies have focused on people with vision impairment, and the influencing factors on the behaviour of people with vision impairment have not received due attention. This study extends the theoretical model of the theory of planned behaviour and provides a new perspective for understanding the travel behaviour intention of people with vision impairment.

视障者受生理和心理问题的限制, 较难参与旅游活动并享受旅游带来的各种好处。本研究旨在构建出视障者旅游行为影响因素理论模型, 以满足视障群体的旅游需求, 并提高他们的生活幸福感。

本研究采用混合研究方法。以访谈为基础进行扎根理论分析, 构建出视障者旅游行为影响因素的理论模型, 并通过定量研究验证模型。

第一阶段, 构建了视障者旅游行为影响因素的新理论模型。第二阶段, 根据构建出的理论模型提出五个研究假设, 并通过定量研究进行验证。研究结果显示内在心理感知、知觉行为控制和社会支持感知对视障者旅游行为意向存在显著正向影响, 而主观规范对视障者旅游行为意向的影响不显著。

视障者同健全者拥有平等的旅游权利。但旅游研究中针对视障群体的研究很少, 对视障者旅游行为影响因素的研究更未得到应有的重视。本研究拓展了计划行为理论模型, 为理解视障者旅游行为意向提供了新的视角。

La limitación de los problemas físicos y psicológicos de las personas con discapacidad visual, dificulta su participación en actividades turísticas y el disfrute de los beneficios del turismo. El objetivo de este estudio es construir un modelo teórico de los factores que influyen en el turismo y que puedan causar problemas a las personas con discapacidad visual para satisfacer sus deseos turísticos y mejorar su disfrute de la vida.

En este estudio se utilizó un método mixto. Sobre la base del análisis de la teoría de la raíz de la entrevista, se construye el modelo teórico de los factores que influyen en el turismo de las personas con discapacidad visual.

En la primera etapa, se establece un nuevo modelo teórico sobre los factores que influyen en el turismo de las personas con discapacidad visual. En la segunda etapa, se investigan cuantitativamente las cinco hipótesis de investigación presentadas por el modelo teórico. Los resultados mostraron que la percepción psicológica interna, el control del comportamiento percibido y la intención social percibida tenían un efecto positivo significativo en el comportamiento de la intención turística de los pacientes con discapacidad visual. Sin embargo, las normas subjetivas no tienen un efecto significativo en la intención de comportamiento turístico de las personas con discapacidad visual.

Las personas con discapacidad y las personas sanas tienen derecho al turismo. Pocas investigaciones turísticas se centran en las personas con discapacidad visual, y no se presta la debida atención a los factores que influyen en el comportamiento de las personas con discapacidad visual. Este estudio amplió el modelo teórico de la teoría del comportamiento planificado y proporcionó una nueva perspectiva para entender la intención de comportamiento de viaje de las personas con discapacidad visual.

The present paper examines the barriers hindering the implementation of circular economy practices in Indian automotive industries and identifies the most critical barriers to be eradicated during the circular economy implementation.

Using a questionnaire survey-based analytic hierarchy process (AHP) approach, 21 barriers to circular economy implementation are identified through a literature review and ranked using the opinions of relevant industrial experts.

Barriers, minimal or no proper economic incentives, difficulty in ensuring product quality and costing of CE products are identified as top barriers to be eliminated first to boost the chances of successful implementation of circular economy practices in Indian automotive industries.

The study not only offers a roadmap on the order of elimination of barriers towards a circular economy but also provides insights from industrial experts on how these barriers can be eradicated and the ill effects of each barrier from an automotive industry perspective.

The authors develop a theoretical framework for barrier analysis for circular economy implementation in the Indian automotive sector using the classic AHP approach to identify the most critical barriers against successful implementation. Further, this study offers managerial implications on how these barriers can be eradicated in real.

The purpose of this study is to identify the determinants of the intended use of Islamic banking and financial services by US Muslims. It builds on the plethora of studies primarily conducted in Muslim-majority countries.

An extended theory of planned behavior model was tested using structural equation modeling. The hypothesized paths were positive attitude, positive subject norms, perceived behavioral control, greater Islamic religiosity and lower perceived cost of being Muslim. A sample size of n = 251 was analyzed.

The analysis showed that positive attitudes toward Islamic financial services were found to be statistically significant (p < 0.001), and its path was the strongest. The higher Muslim identification path was trending toward being statistically significant (p < 0.086). The analysis also showed that lower perceived cost of being Muslim path was statistically significant (p < 0.035), but in the opposite hypothesized direction. No support was found for the effect of positive subjective norms or perceived behavior control hypotheses.

The study was exploratory in nature and has limitations, including some discriminant validity problems.

The paper includes recommendations for US Islamic banking and financial services providers to develop more effective market segmentation and targeting, as well as integrated marketing communication strategies.

This paper fulfills a void in research on Islamic marketing in the West, particularly the USA, a country with a nominal Muslim population.