基于SDN和MEC的5G VANET架构及其性能分析

为了在大规模的车载自组织网络（Vehicular Ad-hoc Network,VANET）中提供灵活的网络管理、控制和提高资源利用率,结合软件定义网络（Software Defined Network,SDN）、云无线接入网络（Cloud Radio Access Network,C-RAN）和移动边缘计算（Mobile Edge Computing,MEC）,提出了一种分层的5G VANET架构（5G MEC VANET）,能够支持智能交通系统各种功能和应用的动态特性,同时降低网络管理成本。此外,位于网络边缘的MEC框架避免了车辆与路边基站的频繁交互,减少了数据传播延时。仿真结果表明,与传统VANET和5G VANET架构相比,所提出的架构降低了传播时延,提高了网络带宽吞吐量,同时减少了控制器开销。     

Bringing dark data into the light: Illuminating existing IoT data lost within your organization

Companies are making substantial investments in placing sensors out in the field and within products and equipment. These Internet-of-Things (IoT) technologies provide an unprecedented opportunity to harness data-driven insights to improve business performance. While the IoT is often framed as a next-generation technology, many businesses already are awash in these data because their existing operational technologies and other equipment generate substantial amounts of data. These data, along with the insights they generate, remain dark—out of sight and unused. Many managers are unaware of the existence and uses of such data. To shed light on the business opportunities afforded by exploiting dark data, this article provides managerial advice and demonstrative case studies in four strategic categories: improving returns on assets, reengaging customers, creating new products and business lines, and transforming business models.     

Building With Bricks and Mortar: The Revenue Impact of Opening Physical Stores in a Multichannel Environment

A crucial decision firms face today is which channels they should make available to customers for transactions. We assess the revenue impact of adding bricks-and-mortar stores to a firm's already existing repertoire of catalog and Internet channels. We decompose the revenue impact into customer acquisition, frequency of orders, returns, and exchanges, and size of orders, returns, and exchanges. We use a multivariate baseline method to assess the impact of adding the physical store channel on these revenue components. As hypothesized, store introduction cannibalizes catalog sales and has much less impact on Internet sales. Also as hypothesized, returns and exchanges increase. Interestingly, transaction sizes of purchases, returns, and exchanges do not change. The “availability effect” produces a net increase in purchase frequency across channels. This more than compensates for increased returns, producing a net increase in revenues of 20% by adding the store channel. Our findings yield a deeper understanding of the revenue relation between channels, and of the dynamic cross-channel effects of marketing actions.     

The Psychological Influences of Threat on B2C E-commerce Adoption: An Extended Study and Explanatory Framework

In order to better understand how internet users actually decide to conduct business transactions or related activities in a B2C e-commerce environment, this article adds a new lens of study by investigating the roles of Threat Appraisal (TA) and Perceived Coping Appraisal (PCA) from the end user's perspective. Based on established academic theories and relevant industrial practices, it is suggested that TA and PCA are critical behavioral components influencing the user's intentions to participate in online transactions. These functions serve as important inputs to formalizing our understanding of how services offered by e-commerce websites are utilized.     

The professional service firm (PSF) in a globalised economy: A study of the efficiency of securities firms in an emerging market

This study explores the efficiency of securities firms in Turkey and offers conceptual and managerial insights utilizing data envelopment analysis. Through a sample of local and foreign owned securities firms in Turkey, we examine the impact of liabilities of foreignness (LOF) and localness (LOL) upon knowledge intensive firm efficiency in an emerging market economy. We have extended this approach through our consideration of liability associated with market globalness (LOMG). Our findings indicate the importance of size for firm efficiency with bank affiliation and foreign ownership also having positive effects on efficiency. Our study makes a contribution conceptually, methodologically and empirically to a growing literature on emerging economies. We also make a valuable addition to the limited empirical work conducted on the securities industry to date. Finally, through our contextualization of Turkish securities firms as professional services firms (PSFs), our research extends the narrow focus on law and accounting which currently dominates the burgeoning research strand on PSFs.     

The impact of service quality and marketing on financial performance in the hospital industry: an empirical examination

Service quality and service marketing have both been studied extensively in relation to service organizations. In this paper we examine these areas simultaneously in terms of their impact on financial performance in the hospital industry. Drawing from the literature in the quality and service marketing areas, the area of service quality is represented in terms of the constructs of quality context and quality outcomes. Quality context (QC) describes the environment related to quality practices within a hospital which generally encourages and enhances service quality while quality outcomes (QO) comprises of specific clinical and patient satisfaction outcomes of the hospital. The area of marketing is represented in terms of the constructs of marketing orientation and market/product development outcomes. Market orientation (MO) is a well accepted, albeit complex, construct within the marketing literature. Generally, market orientation can be thought of as the process of effectively collecting, disseminating, and responding to information in order to enhance the marketing function within the hospital. Such information generally relates to market trends, customers, and competitors. Market/product development outcomes (MPD) refer to specific outcomes in relation to product innovation and market segmentation that are general indicators of the marketing effectiveness of the hospital. Although the evidence in the literature suggests that both service quality and marketing are independently related to organizational performance, the precise nature of the relationships among the variables described above is not clearly understood.Based on theoretical considerations, we propose a framework linking the above-mentioned constructs to the financial performance (FP) of an organization. Since QC and MO are theorized to be multidimensional constructs we use the technique of structural equations modeling (SEM) to test the model. Data were collected for the study from hospitals in a five-state region in the US. The results show that the constructs related to both service quality and marketing impact on financial performance. However, the results do not support the proposed framework of relationships. Instead, the results support a sequential chain of relationships among the constructs where MO mediates the effect of QC on QO, and MPD mediates the effect of QO on FP. Implications of these results for the hospital industry as well as for future research in the area are offered.     

Interacting with background music engages E-Customers more: The impact of interactive music on consumer perception and behavioral intention

The current study investigates the potential of applying interactive music to the design of e-commerce websites, aiming to create more engaging consumer experience. The model of Theory of Interactive Media Effects (TIME) is applied to propose two psychological mechanisms – heightened consumer control and perceived vividness of the website – that explain the effect of interactive music on consumer engagement. A single-factor experiment with three conditions (the control condition without background music, the static background music condition, and the interactive background music condition) was conducted and data from 248 consumers were collected. Results found that consumers in the interactive music condition were more affectively engaged in the shopping task compared to those in the other two conditions due to a higher level of novelty. The novelty dimension of affective engagement subsequently led to stronger behavioral intention and more positive perception toward the website and its brand. Whereas consumer control explained only affective engagement with the online store, perceived vividness of the website predicted both cognitive and affective engagement. In conclusion, the present study contributes to scholarship by addressing limited discussion on interactive music under the context of consumer behavior and drawing attention to perceived control and vividness as critical mediators of consumer engagement in the digital retailing environment.     

Strengthening the Leadership of Rites and Ceremonies for Reconciliation and Truth: The Case of Socorro Mosquera,Manager and Human Rights Defender in Colombia

This article proposes a tool to strengthen the leadership of rites and ceremonies for reconciliation and truth, using a multidisciplinary approach and bringing together political topics (reconciliation and truth), anthropological concepts (rites and ceremonies), and management sciences issues (leadership) in a special urban context that requires reconciliation and truth after a long, irregular war with multiple violations of human rights. After formulation of the research problem, we were able to relate reconciliation and truth with leadership, rites, and ceremonies. Once so related, we analyzed the historical evolution of rites and ceremonies, with special emphasis on the organizational context, to finally propose a tool to strengthen the leadership of rites and ceremonies for reconciliation and truth. The utility of this tool was confirmed in the case of Socorro Mosquera, a manager and human rights defender in Medellín, Colombia. The eclectic and integrative approach brings originality to the study, while the methodological application of mixed approaches increases its value.