9,757 research outputs found

    The Metaverse: Survey, Trends, Novel Pipeline Ecosystem & Future Directions

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    The Metaverse offers a second world beyond reality, where boundaries are non-existent, and possibilities are endless through engagement and immersive experiences using the virtual reality (VR) technology. Many disciplines can benefit from the advancement of the Metaverse when accurately developed, including the fields of technology, gaming, education, art, and culture. Nevertheless, developing the Metaverse environment to its full potential is an ambiguous task that needs proper guidance and directions. Existing surveys on the Metaverse focus only on a specific aspect and discipline of the Metaverse and lack a holistic view of the entire process. To this end, a more holistic, multi-disciplinary, in-depth, and academic and industry-oriented review is required to provide a thorough study of the Metaverse development pipeline. To address these issues, we present in this survey a novel multi-layered pipeline ecosystem composed of (1) the Metaverse computing, networking, communications and hardware infrastructure, (2) environment digitization, and (3) user interactions. For every layer, we discuss the components that detail the steps of its development. Also, for each of these components, we examine the impact of a set of enabling technologies and empowering domains (e.g., Artificial Intelligence, Security & Privacy, Blockchain, Business, Ethics, and Social) on its advancement. In addition, we explain the importance of these technologies to support decentralization, interoperability, user experiences, interactions, and monetization. Our presented study highlights the existing challenges for each component, followed by research directions and potential solutions. To the best of our knowledge, this survey is the most comprehensive and allows users, scholars, and entrepreneurs to get an in-depth understanding of the Metaverse ecosystem to find their opportunities and potentials for contribution

    A Design Science Research Approach to Smart and Collaborative Urban Supply Networks

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    Urban supply networks are facing increasing demands and challenges and thus constitute a relevant field for research and practical development. Supply chain management holds enormous potential and relevance for society and everyday life as the flow of goods and information are important economic functions. Being a heterogeneous field, the literature base of supply chain management research is difficult to manage and navigate. Disruptive digital technologies and the implementation of cross-network information analysis and sharing drive the need for new organisational and technological approaches. Practical issues are manifold and include mega trends such as digital transformation, urbanisation, and environmental awareness. A promising approach to solving these problems is the realisation of smart and collaborative supply networks. The growth of artificial intelligence applications in recent years has led to a wide range of applications in a variety of domains. However, the potential of artificial intelligence utilisation in supply chain management has not yet been fully exploited. Similarly, value creation increasingly takes place in networked value creation cycles that have become continuously more collaborative, complex, and dynamic as interactions in business processes involving information technologies have become more intense. Following a design science research approach this cumulative thesis comprises the development and discussion of four artefacts for the analysis and advancement of smart and collaborative urban supply networks. This thesis aims to highlight the potential of artificial intelligence-based supply networks, to advance data-driven inter-organisational collaboration, and to improve last mile supply network sustainability. Based on thorough machine learning and systematic literature reviews, reference and system dynamics modelling, simulation, and qualitative empirical research, the artefacts provide a valuable contribution to research and practice

    Transformation of the business model to establish sustainable value in the consumer durables super store industry of Sri Lanka

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    The business model of an organization, operates as the fundamental blue print of the planning process, which shapes the nature of the strategies executed during the course of operation. These strategies in turn are responsible for the value creation or value erosion that takes place during the operation of the organization determining its sustainability, and in a broader context the sustainability of the industry. The research is done for the Consumer Durables Super Store (CDSS) industry of Sri Lanka concerning the existing business model, the value erosion occurring as a result of it and the risk it carries to the sustainability of the industry. The theoretical aspect of the research to develop a relationship based business model was anchored on the understanding of existing frameworks relating to sustainable value and extracting relevant areas of each of these frameworks (alignment of value, transforming current strategies and service offerings to create sustainable value) to develop a suitable hybrid framework with modifications to the literature to suite the research context.Ten in-depth interviews with CDSS organizational representatives holding leadership, sales and marketing management positions, and two focus group sessions with fifty selected customers were conducted in a virtual environment due to the prevailing pandemic situation. The data collected were analyzed with NVIVO 12, with themes relevant to the research utilized as codes, giving a clear understanding over the buyer and seller purview on the themes of the research. The findings surfaced the value erosion caused due to the financially driven strategies originated from the transactional orientation of the existing business model. The theories adopted to construct the relationship oriented business model to rectify the value erosion taking place, based on sustainable value, value alignment and service offerings, were modified to incorporate ‘quality of trade’ to bridge the gap, leading towards the creation and delivery of sustainable value to the buyer-seller eco system of the industry

    The determinants of value addition: a crtitical analysis of global software engineering industry in Sri Lanka

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    It was evident through the literature that the perceived value delivery of the global software engineering industry is low due to various facts. Therefore, this research concerns global software product companies in Sri Lanka to explore the software engineering methods and practices in increasing the value addition. The overall aim of the study is to identify the key determinants for value addition in the global software engineering industry and critically evaluate the impact of them for the software product companies to help maximise the value addition to ultimately assure the sustainability of the industry. An exploratory research approach was used initially since findings would emerge while the study unfolds. Mixed method was employed as the literature itself was inadequate to investigate the problem effectively to formulate the research framework. Twenty-three face-to-face online interviews were conducted with the subject matter experts covering all the disciplines from the targeted organisations which was combined with the literature findings as well as the outcomes of the market research outcomes conducted by both government and nongovernment institutes. Data from the interviews were analysed using NVivo 12. The findings of the existing literature were verified through the exploratory study and the outcomes were used to formulate the questionnaire for the public survey. 371 responses were considered after cleansing the total responses received for the data analysis through SPSS 21 with alpha level 0.05. Internal consistency test was done before the descriptive analysis. After assuring the reliability of the dataset, the correlation test, multiple regression test and analysis of variance (ANOVA) test were carried out to fulfil the requirements of meeting the research objectives. Five determinants for value addition were identified along with the key themes for each area. They are staffing, delivery process, use of tools, governance, and technology infrastructure. The cross-functional and self-organised teams built around the value streams, employing a properly interconnected software delivery process with the right governance in the delivery pipelines, selection of tools and providing the right infrastructure increases the value delivery. Moreover, the constraints for value addition are poor interconnection in the internal processes, rigid functional hierarchies, inaccurate selections and uses of tools, inflexible team arrangements and inadequate focus for the technology infrastructure. The findings add to the existing body of knowledge on increasing the value addition by employing effective processes, practices and tools and the impacts of inaccurate applications the same in the global software engineering industry

    Growth trends and site productivity in boreal forests under management and environmental change: insights from long-term surveys and experiments in Sweden

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    Under a changing climate, current tree and stand growth information is indispensable to the carbon sink strength of boreal forests. Important questions regarding tree growth are to what extent have management and environmental change influenced it, and how it might respond in the future. In this thesis, results from five studies (Papers I-V) covering growth trends, site productivity, heterogeneity in managed forests and potentials for carbon storage in forests and harvested wood products via differing management strategies are presented. The studies were based on observations from national forest inventories and long-term experiments in Sweden. The annual height growth of Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) had increased, especially after the millennium shift, while the basal area growth remains stable during the last 40 years (Papers I-II). A positive response on height growth with increasing temperature was observed. The results generally imply a changing growing condition and stand composition. In Paper III, yield capacity of conifers was analysed and compared with existing functions. The results showed that there is a bias in site productivity estimates and the new functions give better prediction of the yield capacity in Sweden. In Paper IV, the variability in stand composition was modelled as indices of heterogeneity to calibrate the relationship between basal area and leaf area index in managed stands of Norway spruce and Scots pine. The results obtained show that the stand structural heterogeneity effects here are of such a magnitude that they cannot be neglected in the implementation of hybrid growth models, especially those based on light interception and light-use efficiency. In the long-term, the net climate benefits in Swedish forests may be maximized through active forest management with high harvest levels and efficient product utilization, compared to increasing carbon storage in standing forests through land set-asides for nature conservation (Paper V). In conclusion, this thesis offers support for the development of evidence-based policy recommendations for site-adapted and sustainable management of Swedish forests in a changing climate

    Regeneration methods and long-term production for Scots pine on medium fertile and fertile sites

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    Tree species choice is a central issue for forest management, and survey studies show that urgent improvements in regeneration practices are needed in Sweden. Most Swedish forest is regenerated with Scots pine (Pinus sylvestris L.) or Norway spruce (Picea abies (L.) H. Karst). However, direct yield comparisons of the two species are rare. The first objective of this thesis was to compare productivity of Scots pine and Norway spruce stands across latitude and fertility gradients in Sweden. To do so, long-term field experiments were combined with modelling in Heureka. In contrast to general perceptions and a majority of previous findings, Scots pine was more productive not only on poor sites but also on medium-fertile to fertile sites (Paper I). The second objective of this thesis (Papers II-IV) was to investigate the potential for cultivating Scots pine on medium-fertile to fertile sites. Effects of planting, natural regeneration and direct seeding were compared in terms of short-term regeneration outcomes, long-term volume production and financial revenue. This was done using empirical field experiments and simulations in Heureka. Results indicated that Scots pine may be successfully regenerated even on medium- to fertile sites. However, regeneration via planting was more reliable than natural regeneration or direct seeding. Natural regeneration and direct seeding generally had less certain outcomes, mainly because key processes such as seed production and germination depend on weather conditions. Experimental results confirm earlier findings that mechanical site preparation (MSP) increases both survival and growth of planted seedlings. For natural regeneration and direct seeding, MSP improves seeds' germination and seedlings' survival and growth. For planted seedlings, reduced pine weevil damage probably helped increased survival whereas reduced competition from ground vegetation helped natural regeneration and direct seeding. Dense shelterwoods had slower seedling growth. However, inexpensive regeneration and income from shelter trees made profit from natural regeneration in shelterwoods only slightly lower than planting on clearcuts

    The International Political Economy of Land Reform and Conflict in Colombia 1936-2018

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    Why did land reforms attempted in 1936, 1961 and 1994 not lead to more equality, stability, and peace in Colombia? Using a theoretical framework informed by Gramscis theory of passive revolution, this study examines the origin of inequality and the propagation of conflict in Colombia by exploring the relationship between international political economy, production relations and class conflict surrounding three cases of land reform (1936, 1961 and 1994). I argue that land reforms have failed to address inequality and have exacerbated class conflicts for three interrelated reasons: 1) though campesinos demanded the redistribution of large estates, pro-capitalist land reforms left productive plantations intact and instead promoted access to lands in frontier areas where the state had little effective control over property rights; 2) demands for reforms emerged during 'commodity booms', when a bourgeois-peasant alliance in favour of capitalist expansion was possible, but during phases of subsequent crisis and price collapse, agrarian reforms were coopted by landlord-bourgeois alliances that pushed the consolidation of larger, more productive holdings; 3) the failure of reforms to address popular demands for land contributed to an atmosphere of instability in which reactionary elites used popular unrest as a pretext for repression against opponents of capitalism with the support of international financial and military power. The result has been the intensification of land conflicts and several waves of landlord-led dispossession, popular resistance, and counterinsurgency in the 1940s-50s, 1960s-1970s and 1980s-2000s. Political instability in Colombia is indicative of the dynamics of passive revolution as the case lends itself to a Gramscian analysis of uneven development in the 20th century Latin American context. Colombia's experience shows the limits of "passive revolutionary" land reforms which may unite diverse constituencies under certain conditions, but which leave the material and social foundations of conflict fundamentally unchanged, leaving campesinos vulnerable to shifts in global market conditions. This leads me to the conclusion that there will be no stable peace in Colombia without redistributive land reform. Redistribution has been the demand of the agrarian social movement since the 1930s but has been consistently denied in land reforms during broader processes of passive revolution that favour large-scale corporate farming, natural resource development and the debasement and exploitation of labour through dispossession in a context of unevenly expanding capitalism

    A mixed-methods study on L2 motivation of Korean junior college English major students

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    Korea is an EFL context where instrumentality overpowers integrativeness for college entrance or employment because English is mainly considered a school or test subject. Integrativeness might be replaceable due to its inadequacy of explaining how L2 learners integrate into a certain L2 community in the globalized world. Thus, Dörnyei (2005, 2009a) developed the L2 Motivational Self System (L2MSS) that could encompass both integrativeness and instrumentality as in the ideal L2 self. The L2MSS is a future-oriented tripartite framework to comprise the ideal L2 self, ought-to L2 self, and L2 learning experience. There might be fluctuations or even surges in L2 motivation, which the new model has gained validity in its dynamic nature and imagery capacity (Dörnyei, 2010b). Thus, this study attempted to discover the dynamics of L2 motivation employing L2MSS as the main framework. Nevertheless, Korean learners of English could learn English without their L2 motivation (Kim, T.-Y., 2012b). This trend might go until or after tertiary education. Also, there has been academic elitism, hakbul, in Korea, to distinguish four-year universities and two- or three-year junior colleges, which are frequently considered second-choice or failure. Thus, this study explored junior college students, especially those majoring in English, who were studied less than four-year university students. Assuming junior college English major students’ L2 motivation is unique on their own, a longitudinal mixed-methods case study will be employed using the L2MSS. 189 students participated in the online questionnaire administration, followed by interviews with 59 and 31 students and five professors. The participants showed some L2 motivation with Korea-specific tendencies in that there was intense pressure for the future. Most significantly, there were weak ideal L2 self, strong ought-to L2 self, and universal concept of instrumentality (promotion). Therefore, this study offers pedagogical implications to complement their current L2 learning and motivation
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