Suchergebnisse

In mobile robotics research, the exploration of unknown environments has always been an important topic due to its practical uses in consumer and military applications. One specific interest of recent investigation is the field of complete coverage and path planning (CCPP) techniques for mobile robot navigation. In this paper, we present a collaborative CCPP algorithms for single robot and multi-robot systems. The incremental coverage from the robot movement is maximized by evaluating a new cost function. A goal selection function is then designed to facilitate the collaborative exploration for a multi-robot system. By considering the local gains from the individual robots as well as the global gain by the goal selection, the proposed method is able to optimize the overall coverage efficiency. In the experiments, our CCPP algorithms are carried out on various unknown and complex environment maps. The simulation results and performance evaluation demonstrate the effectiveness of the proposed collaborative CCPP technique.

Purpose
Green sustainability has become a critical challenge for businesses to execute green supply chain management (GSCM). Most of the literature on GSCM emphasizes regulations as drivers and few pieces of research are conducted from an internal organizational culture view. This study aims to use the cultural perspective of market orientation (MO) and draws on both the natural resource-based view (NRBV) and dynamic capability view (DCV) to explore the relationships among green market orientation (GMO), GSCM capability and organizational performance.


Design/methodology/approach
A total of 1,000 survey questionnaires were distributed to the Taiwanese electronics industry and 207 valid questionnaires were collected. Data was analyzed using structural equation modeling.


Findings
The results show that GMOs have a significant positive impact on GSCM capability, environmental performance and economic performance. Moreover, GSCM capability is positively related to environmental and economic performance. The results also show that GMOs have a significant indirect influence on environmental performance and economic performance through GSCM capability.


Practical implications
The findings of this study suggest how Taiwan's electrical and electronic manufacturers, while faced with pressure from competitors, customers and regulations (i.e. waste electrical and electronic equipment directive, Restriction of Hazardous Substances Directive and energy-using products directives), should efficiently and effectively implement GMO and enhance GSCM capability to improve organizational performance.


Originality/value
This study fills up the gap between MO and performance indistinct relationships. It has also integrated two perspectives, namely, NRBV and DCV, to explain GSCM capability as a mediator between GMO and organizational performance relationship and to examine the relationships among GMO, GSCM capability and organizational performance.

Purpose
The purpose of this paper is to explore how internal and external factors simultaneously drive firms to adopt green supply chain (GSC) initiatives and to construct a comprehensive research model by drawing upon institutional theory, stewardship theory, and view of performance.


Design/methodology/approach
The data collected from 380 manufacturers in the electrical and electronics industries in Taiwan were analyzed via structural equation modeling and bootstrapping.


Findings
First, institutional pressures affect the GSC initiatives of firms. Second, institutional pressures influence the environmental stewardship behaviors (ESBs) of managers. Third, the ESBs of managers affect the GSC initiatives of firms. Fourth, the GSC initiatives of firms influence their environmental performance, economic performance, and competitiveness. Fifth, the bootstrapping results reveal that institutional pressures indirectly affect the GSC initiatives of firms through the ESBs of managers.


Research limitations/implications
Environmental sustainability has intensified the need for firms to develop a corporate culture. Future research can investigate the relationship among the institutional pressures, greening corporate culture, and GSC initiatives of firms.


Practical implications
Those managers facing institutional pressures must continually focus on the effects of external factors on the GSC initiatives of their firms. They must also increase their commitment and support to such initiatives to attain favorable levels of environmental performance, economic performance, and competitiveness.


Originality/value
This study integrates four streams of literature on institutional theory, stewardship theory, GSC initiatives, and view of performance. Apart from analyzing field- and organization-level data simultaneously, this paper is also the first to demonstrate the relationships among institutional pressures, ESBs of managers, GSC initiatives, and firm performance.

Purpose– The purpose of this paper is to investigate the impact of the salient task environment on reverse logistics (RL) practices and organizational performance in the context of Taiwanese computer, communication, and consumer (3C) electronics retail industry.Design/methodology/approach– A hierarchical regression analysis was employed to test relationships between four constituents of the task environment and RL, as well as relationships between RL and environmental/economic performance. In addition, a regression analysis was used to examine the mediating effect of RL on relationships between the constituents of the task environment and environmental/economic performance. Data and information collected from a sample of 284 companies from the Taiwanese 3C retail industry were used for analysis.Findings– Results suggest that three out of four constituents of task environment including government agencies, suppliers, and customers are associated positively with RL activities. In other words, as the salience of the constituents of the task environment increases, their level of influence on the firm's RL also increases. This study also found the mediating effect of RL, indicating that superior performance emerges when a company's RL matches the salient task environment.Practical implications– The findings provide an insight into the relationships between the constituents of the task environment, RL, and environmental/economic performance which can assist firms within 3C retail industry in designing and developing appropriate strategy for RL. In practice, some retailers, especially SMEs, have outsourced their RL to professional recyclers. Investment in RL activity may be an option for some 3C retailers.Originality/value– While previous research provides a strong foundation to further develop RL and subsequent policies, analysis of the factors affecting the decision processes to implement RL specially in the retail sector is scarce. This study fills this gap.