28,113 research outputs found

    A new perspective on traffic control management using triangular interval type-2 fuzzy sets and interval neutrosophic sets

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    Controlling traffic flow on roads is an important traffic management task necessary to ensure a peaceful and safe environment for people. The number of cars on roads at any given time is always unknown. Type-2 fuzzy sets and neutrosophic sets play a vital role in dealing efficiently with such uncertainty. In this paper, a triangular interval type-2 Schweizer and Sklar weighted arithmetic (TIT2SSWA) operator and a triangular interval type-2 Schweizer and Sklar weighted geometric (TIT2SSWG) operator based on Schweizer and Sklar triangular norms have been studied, and the validity of these operators has been checked using a numerical example and extended to an interval neutrosophic environment by proposing interval neutrosophic Schweizer and Sklar weighted arithmetic (INSSWA) and interval neutrosophic Schweizer and Sklar weighted geometric (INSSWG) operators. Furthermore, their properties have been examined; some of the more important properties are examined in detail. Moreover, we proposed an improved score function for interval neutrosophic numbers (INNs) to control traffic flow that has been analyzed by identifying the junction that has more vehicles. This improved score function uses score values of triangular interval type-2 fuzzy numbers (TIT2FNs) and interval neutrosophic numbers

    Performance measurement : challenges for tomorrow

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    This paper demonstrates that the context within which performance measurement is used is changing. The key questions posed are: Is performance measurement ready for the emerging context? What are the gaps in our knowledge? and Which lines of enquiry do we need to pursue? A literature synthesis conducted by a team of multidisciplinary researchers charts the evolution of the performance-measurement literature and identifies that the literature largely follows the emerging business and global trends. The ensuing discussion introduces the currently emerging and predicted future trends and explores how current knowledge on performance measurement may deal with the emerging context. This results in identification of specific challenges for performance measurement within a holistic systems-based framework. The principle limitation of the paper is that it covers a broad literature base without in-depth analysis of a particular aspect of performance measurement. However, this weakness is also the strength of the paper. What is perhaps most significant is that there is a need for rethinking how we research the field of performance measurement by taking a holistic systems-based approach, recognizing the integrated and concurrent nature of challenges that the practitioners, and consequently the field, face

    A hierarchy of SPI activities for software SMEs: results from ISO/IEC 12207-based SPI assessments

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    In an assessment of software process improvement (SPI) in 15 software small- and –medium-sized enterprises (software SMEs), we applied the broad spectrum of software specific and system context processes in ISO/IEC 12207 to the task of examining SPI in practice. Using the data collected in the study, we developed a four-tiered pyramidal hierarchy of SPI for software SMEs, with processes in the higher tiers undergoing SPI in more companies than processes on lower level tiers. The development of the hierarchy of SPI activities for software SMEs can facilitate future evolutions of process maturity reference frameworks, such as ISO/IEC 15504, in better supporting software development in software SMEs. Furthermore, the findings extend our body of knowledge concerning the practice of SPI in software SMEs, a large and vital sector of the software development community that has largely avoided the implementation of established process maturity and software quality management standards

    SMES, Open Innovation and IP Management: Advancing Global Development

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    [Excerpt] Micro-Small-Medium Enterprises (abbreviated herein henceforth as “SMEs”) are global drivers of technological innovation and economic development. Perhaps their importance has been somewhat eclipsed by the mega-multinational corporate entities. However, whereas the corporations might be conceptualized as towering sequoia trees, SMEs represent the deep, broad, fertile forest floor that nourishes, sustains and regenerates the global economic ecosystem. [. . .] Broadly recognized as engines of economic and global development, SMEs account for a substantial proportion of entrepreneurial activity in both industrialized and developing countries. Indeed, their role as dynamos for technological and economic progress in developing countries is critical and cannot be underemphasized. In industrialized countries, SMEs as major contributors to GDP and private sector employment, in more than a few countries contribute to as much as 60% of the national workforce. In a not unsubstantial portion of developing countries, SMEs are known to employ more than 70% of workforce. [. . .] As foci of technological creativity, SMEs propel long-term growth by facilitating innovation and its diffusion across local, national, regional and international economies. However, innovation immediately begets intellectual property (IP) and the concomitant urgent need to address intellectual property rights (IPR). Hence, to realize the maximum value of innovation, SMEs need to recognize, understand and manage IP in order to protect their IPR and thereby accelerate their innovations towards commercialization; this will, in turn, not only improve their business revenue flow, but ultimately raise the standard of living in their respective countries. IP is thus the essential link in the economic/technological development chain, between creativity/invention, on the one hand, and innovation/commercialization, on the other. SMEs therefore face a number of needs and challenges with respect to IP, IPR and management thereof. This will involve efficient utilization of assets, resources and capital, of which the human/intellectual aspect becomes increasingly important in the emerging global knowledge economy. SMEs in the future will need to recognize the reality and indeed necessity of economies of scale, i.e., the need to “merge” in virtual networks which whereas they might resemble larger firms, are not, i.e., are more like the jellyfish (loosely assemble, organized colony of single-cellular organisms: “SME networks”) and less like the whale (highly structured, systematized, hierarchical organism: the “corporate firm”). This will require sophisticated understanding how open innovation networks, IP management and global economic opportunities can be strategically merged to drive development
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