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1 – 10 of 112J.R. Llata, E.G. Sarabia and J.P. Oria
This paper presents an evaluation of several types of neural networks for object recognition by means of ultrasonic sensors. Initially, in order to obtain information from the…
Abstract
This paper presents an evaluation of several types of neural networks for object recognition by means of ultrasonic sensors. Initially, in order to obtain information from the ultrasonic signal, a parametric method is proposed and a set of features is extracted from the ultrasonic echo envelope. Then, it is necessary to evaluate how much information is provided for each characteristic obtained. Therefore, it has been necessary to carry out an analysis in order to detect the most relevant features. Results about information provided for each feature are presented by order of preference. Subsequently, using these features extracted from the echo signal, an experimental set‐up has been carried out in order to highlight the capabilities of different types of neural networks with this information. Finally, results obtained from experimental tests are presented, and the pattern recognition capabilities of each neural network type, using the selected features, are shown.
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Jessica Lindbergh, Karin Berglund and Birgitta Schwartz
Entrepreneurship is recognized by many as a solution to environmental and social challenges of today’s society. However, it has also been criticized since it may maintain the…
Abstract
Entrepreneurship is recognized by many as a solution to environmental and social challenges of today’s society. However, it has also been criticized since it may maintain the capitalistic demands of growth and efficiency in an unsustainable way. In this chapter, we challenge the current conception of entrepreneurship that aims for societal change by tracing what, how, where, and with whom such entrepreneurship is performed. Furthermore, we take inspiration from the idea of diverse economy by Gibson-Graham and introduce the concept of alternative entrepreneurship to explore how it takes shape, changes its contours, and both challenges and propels contemporary capitalism. In this chapter, we present three ethnographic cases of the unfolding of diverse entrepreneurial activities: (1) the case of Oria, who contributes to social justice through fair trade; (2) the case of artisan food producers who contribute to biological diversity and a rural livelihood; and (3) the case of the DiE project/NEEM NGO, which contributes to social inclusion through entrepreneurial empowerment and the development of a microcredit program. We find that the alternative entrepreneurs are not constrained by organizational forms or by a limited number of economic and non-economic activities that target societal challenges. The alternative entrepreneurs move between different organizational forms such as non-profit and for profit, as well as, undertaking business and voluntary practices to achieve societal change. Finally, we conclude that the ethnographic tracing of alternative entrepreneurship allows previously unsighted activities to become more visible and brings attention to possibilities of creatively destroying overly narrow conceptions of entrepreneurship.
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Senem Kursun Bahadir, Fatma Kalaoglu, Sebastien Thomassey, Irina Cristian and Vladan Koncar
During the past decades, several researchers have introduced devices that use sonar systems to detect and/or to determine the object location or to measure the distance to an…
Abstract
Purpose
During the past decades, several researchers have introduced devices that use sonar systems to detect and/or to determine the object location or to measure the distance to an object using reflected sound waves. The purpose of this paper is to use sonar sensor with textile structure and to test it for detection of objects.
Design/methodology/approach
In this study, a sonar system based on intelligent textiles approach for detection of objects has been developed. In order to do this, ultrasonic sensor has been integrated to textile structures by using conductive yarns. Furthermore, an electronic circuit has been designed; PIC 16F877 microcontroller unit has been used to convert the measured signal to meaningful data and to assess the data. The algorithm enabling the objects detection has also been developed. Finally, smart textile structure integrated with ultrasonic sensor has been tested for detection of objects.
Findings
Beam shape is presented related to identified object and compared with the actual one given in sensor's datasheet in order to test the efficiency of the proposed method of detection. The achieved results showed that the determined beam pattern matches with the actual one given in its datasheet. Therefore, it can be concluded that the integration of sensor was successful.
Originality/value
This is the first time in the literature that a sonar sensor was integrated into textile structure and tested for detection of objects.
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Hanieh Khodaei, Victor Scholten, Emiel Wubben and Onno Omta
Recent studies have questioned the direct relationship between entrepreneurial orientation (EO) and firm performance (e.g., Rauch, Wiklund, Lumpkin, & Frese, 2009; Wales, Gupta, &…
Abstract
Recent studies have questioned the direct relationship between entrepreneurial orientation (EO) and firm performance (e.g., Rauch, Wiklund, Lumpkin, & Frese, 2009; Wales, Gupta, & Mousa, 2013). Following this stream of research, this study examines this relationship by identifying the intermediate steps between these two variables (Alegre & Chiva, 2013; Wales, 2016; Zahra, Sapienza, & Davidsson, 2006). EO is considered essential for new market entry and new business foundation, which is why this study focuses on startups. Startups search for viable business opportunities, and this search is highly dependent on organizational learning (Kreiser, 2011). Previous studies suggest that organizational learning mediates the relationship between EO and performance (e.g., Real, Roldan, & Leal, 2014; Wang, 2008). This study investigates the role of organizational learning in this relationship by analyzing how EO and absorptive capacity (AC) interact. We propose a more direct and fine-grained measure of entrepreneurial success by developing a conceptual model that includes opportunity identification as an early outcome measure for startups. Drawing on a sample of 95 academic spin-offs in the Netherlands, this study examines the mediating role of AC and market readiness in the relationship between EO and market opportunities. The findings indicate that AC and market readiness mediate the direct effect of EO on market opportunity identification. By using opportunity identification as an outcome measure for EO, this study adopts a more direct measure for firm performance, resonating with recent discussions on the main effect of EO for organizations. These findings suggest that academic spin-offs’ AC leads entrepreneurial efforts to achieve a better product-market fit, and in return, helps to identify more market opportunities.
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Sha Xu, Jie He, Alastair M. Morrison, Xiaohua Su and Renhong Zhu
Drawing from resource orchestration theory, this research proposed an integrative model that leverages insights into counter resource constraints and uncertainty in start-up…
Abstract
Purpose
Drawing from resource orchestration theory, this research proposed an integrative model that leverages insights into counter resource constraints and uncertainty in start-up business model innovation (BMI). It investigated the influences of entrepreneurial networks and effectuation on BMI through bricolage in uncertain environments.
Design/methodology/approach
The research surveyed 481 start-ups in China. LISREL 8.80 and SPSS 22.0 were employed to test the validity and reliability of key variables, respectively. Additionally, hypotheses were examined through multiple linear regression.
Findings
First, entrepreneurial networks and effectuation were positively related to BMI, and combining these two factors improved BMI for start-ups. Second, bricolage contributed to BMI and played mediating roles in translating entrepreneurial networks and effectuation into BMI. Third, environmental uncertainty weakened the linkage between bricolage and BMI.
Research limitations/implications
Future research should replicate the results in other countries because only start-ups in China were investigated in the study, and it is necessary to extend this research by gathering longitudinal data. This research emphasized the mediating effects of bricolage and the moderating influence of environmental uncertainty, and new potential mediating and moderating factors should be explored between resources and BMI.
Originality/value
There are three significant theoretical contributions. First, the findings enrich the literature on the complex antecedents of BMI by combining the impacts of entrepreneurial networks and effectuation. Second, an overarching framework is proposed explaining how bricolage (resource management) links entrepreneurial networks and effectuation and BMI. Third, it demonstrates the significance of environmental uncertainty in the bricolage–BMI linkage, deepening the understanding of the bricolage boundary condition.
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Investigates urban bias in state policy making in Mexico. Refers to literature claiming that rural poverty in developing nations is a major problem because capitalism reflects an…
Abstract
Investigates urban bias in state policy making in Mexico. Refers to literature claiming that rural poverty in developing nations is a major problem because capitalism reflects an urban bias. Examines social security coverage for the rural poor in Mexico and notes that there are great variations depending on area, suggesting that social security coverage is politically negotiable. Outlines briefly the historical development of Mexico’s welfare state and uses a power resource model to demonstrate how groups with competing interests go about securing benefits from the state. Cites literature on dependency theory, indicating that rural groups have failed to mobilize politically and have therefore not secured the same state resources (such as social security benefits and housing) as urban groups, yet argues that this does not always apply in Mexico, partially due to party politics and bureaucratic paternalism. Explains how data was collected to examine regional variations in social security coverage among the rural poor and how the data was analysed. Reveal that workers in important international export markets (such as cotton and sugar) have greater political leverage in obtaining better social security benefits. Notes also that areas supporting the political party in power obtain better benefits. Concludes, therefore, that rural workers are not powerless in the face of urban capitalism and that urban bias and dependency theories do not reflect the situation in Mexico – rather social security benefits are politically negotiable.
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Arifin Angriawan, Ramendra Thakur and David Baker
The purpose of this study is to understand the strategic roles of service customer equity (SCE) and innovation protection on firm performance (FP).
Abstract
Purpose
The purpose of this study is to understand the strategic roles of service customer equity (SCE) and innovation protection on firm performance (FP).
Design/methodology/approach
Structural equation modeling (SEM) was used to test the proposed model. The authors tested the model using managerial data from two countries: USA and India.
Findings
The findings of this study indicated positive direct impacts of service innovation (SI) on FP and positive indirect impacts via SCE in both samples. SI and SCE impacts on FP were both stronger in the US samples. However, the effect of SI on SCE is stronger in India than in the USA. This study also identified moderating impacts of service innovation protection (SIP) on the relationship between SI and FP in the Indian sample and between SI and SCE in the US sample.
Originality/value
Although there is scholarly research in SI and its impact on FP, there are no studies the authors identified that discuss the moderating effect of SIP. The authors studied the moderating effect of SIP because (1) it is crucial for industries to maintain a competitive advantage in the marketplace, (2) it protects industries investment in research and development and (3) it also protects industries intellectual property, such as trademark, copyrights and patents. There are two key contributions of this study: (a) investigating the effect of SCE between SI and FP and (b) investigating the moderating effect of SIP using managerial data from two countries (USA vs India).
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Matthew Jenkins, Timothy Munyon and Marc Scott
Endeavoring to expand their global market presence, firms often launch products into emerging markets where managers face the daunting task of deploying products by managing…
Abstract
Purpose
Endeavoring to expand their global market presence, firms often launch products into emerging markets where managers face the daunting task of deploying products by managing available, and often limited, supply chain resources. Yet, literature has not empirically examined managerial resource orchestration in this context. Accordingly, by embedding resource orchestration theory (ROT) into the emerging market context, the authors offer middle-range theorizing on supply chain resource orchestration (SCRO) and empirically test how acquiring, bundling and leveraging activities impact new product launch performance.
Design/methodology/approach
The authors test the model by analyzing empirical data from 175 individual product launches into emerging markets using a survey methodology.
Findings
The authors’ results suggest that SCRO holds the promise of being a viable middle-range theory in the supply chain field, especially where managers face limited resources and must “work with what they have to do what they can.”
Research limitations/implications
The authors’ study also has some limitations. First, because a panel data service company was used to collect the data, the authors were not provided with any information regarding the respondents' company names or other identifying data. Second, because the authors did not directly interact with the respondents nor were the authors able to contact multiple individuals from their respective organizations, the study was limited to a single-respondent design. However, to counter issues associated with single-response bias, the central constructs in the study referenced phenomena related to a specific product launch project as opposed to constructs at the firm or inter-firm relational level.
Practical implications
The authors’ results reveal that SCRO activities can enhance the performance of new product launches, even in resource-starved emerging market contexts.
Originality/value
The results validate measures for several of the SCRO processes (i.e. supply chain resource acquisition, supply chain resource bundling and supply chain leveraging) and provide evidence that supply chain resource bundling and supply chain leveraging mediate the relationship between supply chain resource acquisition and product launch performance. Further, soft logistics infrastructure is found to be an important boundary condition for these relationships.
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Sha Xu, Xiaojie Wu, Jie He, Renhong Zhu, Alastair M. Morrison and Cheng Xie
Although it is acknowledged that entrepreneurial networks play a crucial role in fostering business model innovation (BMI) for start-ups, it is unclear how and when these networks…
Abstract
Purpose
Although it is acknowledged that entrepreneurial networks play a crucial role in fostering business model innovation (BMI) for start-ups, it is unclear how and when these networks affect BMI. This research developed a moderated mediation model to explore the impact of entrepreneurial networks on BMI in start-ups and examined the dual mediating effects of causation and effectuation, as well as the moderation of environmental dynamism.
Design/methodology/approach
The proposed framework was tested by hierarchical regression analyses and bootstrapping using samples of 248 start-ups in China.
Findings
The results showed that entrepreneurial networks significantly positively impacted start-up BMI. Causation and effectuation played dual mediating roles between entrepreneurial networks and BMI. Furthermore, the entrepreneurial networks-effectuation-BMI association was more substantial in highly dynamic environments, whereas the entrepreneurial networks-causation-BMI relationship was unaffected.
Research limitations/implications
There are several theoretical contributions resulting from this research. The findings offer new insights for understanding the antecedents of start-up BMI from the network perspective. This research adds to the growing literature on resource orchestration (RO) by exploring the dual mediating influences of causation and effectuation in resource management. This investigation revealed the boundary condition between entrepreneurial networks and BMI by testing the moderating influence of environmental dynamism.
Practical implications
Start-ups must effectively use external resources embedded within networks to advance BMI. Start-up entrepreneurs should apply causation and effectuation to transform entrepreneurial network resources into BMI. Start-up entrepreneurs must dynamically manage resources in response to ever-changing environmental conditions. Resource acquisition and management of entrepreneurial networks can vary significantly in their influence on start-up BMI under different environmental contexts.
Originality/value
Unlike previous BMI research focused on internal organizational factors, this study highlighted the critical importance of entrepreneurial networks as a prerequisite for achieving start-up BMI, contributing to the literature on open innovation and resource-based view. Examining the dual mediating roles of causation and effectuation illustrated the bridging role of strategic decision-making logic in connecting resources to value creation, contributing to the developing RO literature. The moderating influence of environmental dynamism was explored, clarifying how start-up BMI benefits from entrepreneurial networks in differing situations. A framework for reconciling contradictory findings concerning the association between entrepreneurial networks and innovation is provided.
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