• Title/Summary/Keyword: knowledge gap

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Leveraging artificial intelligence to assess explosive spalling in fire-exposed RC columns

  • Seitllari, A.;Naser, M.Z.
    • Computers and Concrete
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    • v.24 no.3
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    • pp.271-282
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    • 2019
  • Concrete undergoes a series of thermo-based physio-chemical changes once exposed to elevated temperatures. Such changes adversely alter the composition of concrete and oftentimes lead to fire-induced explosive spalling. Spalling is a multidimensional, complex and most of all sophisticated phenomenon with the potential to cause significant damage to fire-exposed concrete structures. Despite past and recent research efforts, we continue to be short of a systematic methodology that is able of accurately assessing the tendency of concrete to spall under fire conditions. In order to bridge this knowledge gap, this study explores integrating novel artificial intelligence (AI) techniques; namely, artificial neural network (ANN), adaptive neuro-fuzzy inference system (ANFIS) and genetic algorithm (GA), together with traditional statistical analysis (multilinear regression (MLR)), to arrive at state-of-the-art procedures to predict occurrence of fire-induced spalling. Through a comprehensive datadriven examination of actual fire tests, this study demonstrates that AI techniques provide attractive tools capable of predicting fire-induced spalling phenomenon with high precision.

Evaluation of Water Suction for Compacted Bentonite Buffer Under Elevated Temperature Conditions

  • Yoon, Seok;Lee, Deuk-Hwan;Cho, Won-Jin;Lee, Changsoo;Cho, Dong-Keun
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.20 no.2
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    • pp.185-192
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    • 2022
  • A compacted bentonite buffer is a major component of engineered barrier systems, which are designed for the disposal of high-level radioactive waste. In most countries, the target temperature required to maintain safe functioning is below 100℃. If the target temperature of the compacted bentonite buffer can be increased above 100℃, the disposal area can be dramatically reduced. To increase the target temperature of the buffer, it is necessary to investigate its properties at temperatures above 100℃. Although some studies have investigated thermal-hydraulic properties above 100℃, few have evaluated the water suction of compacted bentonite. This study addresses that knowledge gap by evaluating the water suction variation for compacted Korean bentonite in the 25-150℃ range, with initial saturations of 0 and 0.22 under constant saturation conditions. We found that water suction decreased by 5-20% for a temperature increase of 100-150℃.

Conceptualizing Accessible Tourism with Smart Technologies

  • Lin, Katsy Jiaxin;Ye, Huiyue;Law, Rob
    • Journal of Smart Tourism
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    • v.2 no.2
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    • pp.5-14
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    • 2022
  • In recent years, UNWTO and academics have called for the development of responsible, sustainable, and universally accessible tourism to promote equal human rights and social inclusion. Prior studies have also revealed the potential and value of smart technologies in reducing, if not removing, barriers to people with access requirements during travel and in their everyday lives. However, a guiding framework of how smart technologies assist in building an accessible destination is still absent, thereby hindering the progress of building accessible tourism. This paper aims to fill this knowledge gap. A conceptual model of smart accessible destination (SAD) was proposed drawing from the intersection of accessible tourism and smart tourism. With the guidance of this conceptual model, tourism destinations and stakeholders can recognize and utilize the synergies of accessible and smart tourism to enhance the social inclusion, competitiveness, and sustainability of a destination.

Spontaneous Degenerative Rupture of Extensor Hallucis Longus Treated with a Split Tibialis Anterior Tendon Autograft: A Case Report (전경골건 부분 이식을 이용한 장족무지신건 퇴행성 파열의 치료 사례)

  • Jiyoun, Kim;Gab-Lae, Kim;Taeho, Kim
    • Journal of Korean Foot and Ankle Society
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    • v.26 no.4
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    • pp.192-195
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    • 2022
  • Chronic extensor hallucis longus (EHL) tendon rupture is relatively rare, but in such cases, surgical repair is necessary to prevent hallux dysfunction. To the best of our knowledge, reconstruction of chronic EHL rupture using a split tibialis anterior tendon autograft has not been previously reported. Here we present a case of spontaneous EHL tendon rupture with a 5 cm gap in a healthy 57-year-old woman. At the 1-year follow-up evaluation, hallux function was restored, and the patient was well satisfied with results.

The Impact of Consumer Evaluation on the Cause-Related Marketing

  • Lee, Chia-Lin
    • Asia Marketing Journal
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    • v.19 no.1
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    • pp.1-17
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    • 2017
  • Cause-related Marketing (CrM) has become an increasingly popular marketing approach over the past two decades. However, neither researchers nor organizations fully understand the determinants of a successful CrM partnership. This research fills this gap. Specifically, we employ the schema theory to explore circumstances in which the CrM alliance cannot achieve a success. We use a theoretical modeling approach to report that, when consumers' typicality-based cognitive process is assumed, the CrM activity with the partners' more-discrepant attribute profile cannot be evaluated favorably, but the attribute-level uncertainty about the CrM alliance is less likely to feedback to the two partners. Furthermore, we argue that, under the schema-plus-tag model, consumers may not like the CrM program with a similar attribute profile. Therefore, this CrM approach may fail. To our knowledge, we are the first to apply the schema theory to explain how a CrM alliance can achieve a success.

Examining the Impact of Co-branding Service Failures on Consumer Evaluations

  • Lee, Chia-Lin
    • Asia Marketing Journal
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    • v.19 no.3
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    • pp.19-44
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    • 2017
  • Researchers do not fully understand consumers' responses to negative co-branding events; thus, they report inconsistent evidence regarding the negative impact on the partnering brands. Our research bridges a gap in this research stream, and answers an important question: When a service failure occurs, could the two different models of consumers' brand schema change affect their negative perception of each brand partner? By using a theoretical and mathematical modeling approach, we offer two propositions. The first proposition shows that, under consumers' book-keeping cognitive process, the negative spillover effect occurs for both brands. The second proposition argues that, when the sub-typing model is assumed, it is possible that one brand suffers while the other escapes the blame for the failure. To our knowledge, this is one of the first few studies to identify circumstances in which a negative spillover effect may or may not occur to brand partners in co-branding service failures.

The Impact of Product Involvement on Reciprocal Effect in Co-branding

  • Lee, Chia-Lin
    • Asia Marketing Journal
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    • v.18 no.3
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    • pp.19-34
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    • 2016
  • Product involvement is an important factor in consumer evaluation of co-branding. However, academic discussions over this factor have largely been neglected. This paper bridges this gap and investigates how product involvement moderates the strength of the reciprocal effect on each brand partner. We validate two theory-driven propositions by using a theoretical modeling approach. Proposition 1 explains that the negative reciprocal effect on partnering brands is stronger in the scenario of higher-involved categories than in lower-involved categories. Proposition 2 argues that the positive reciprocal effect on partnering brands can be more significant in the case of lower-involved categories than in higher-involved categories. To the best of our knowledge, we are the first to explore the influence of product involvement on reciprocal effects in the scenario of a moderately-incongruent co-branding alliance.

Psychometrics of Perspective Taking in Writing: CombiningManualCoding and Computational Approaches

  • Minkyung Cho
    • International journal of advanced smart convergence
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    • v.12 no.1
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    • pp.120-129
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    • 2023
  • Perspective taking, one's knowledge of their own mental and emotional states and inferences about others' mental and emotional states, is an important higher order cognitive skill required in successful writing. However, there has not been much research on the identification and examiantion of the psychometrics of perspective taking. To fill in this gap, I reviewed the psychological and cognitive frameworks of perspective taking including theory of mind, audience awareness, development of epistemological understanding, and argumentation schema. I also reviewed various methods of examining the psychometric properties of perspective taking in written composition, including both manual and computational approaches. The review of literature yielded suggestions on the development of manual coding scheme for perspective taking as well as the selection of indexes to draw from natural language processing tools. Challenges and affordances of combining the manual and computational approach are discussed along with future research directions to advance the field of psycholinguistics.

Event-Based Ontologies: A Comparison Review

  • Ashour Ali;Shahrul Azman Mohd Noah;Lailatul Qadri Zakaria
    • International Journal of Computer Science & Network Security
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    • v.23 no.5
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    • pp.212-220
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    • 2023
  • Ontologies are knowledge containers in which information about a specified domain can be shared and reused. An event happens within a specific time and place and in which some actors engage and show specific action features. The fact is that several ontology models are based on events called Event-Based Models, where the event is an individual entity or concept connected with other entities to describe the underlying ontology because the event can be composed of spatiotemporal extents. However, current event-based ontologies are inadequate to bridge the gap between spatiotemporal extents and participants to describe a specific domain event. This paper reviews, describes, and compares the existing event-based ontologies. The paper compares and contrasts various ways of representing the events and how they have been modelled, constructed, and integrated with the ontologies. The primary criterion for comparison is based on the events' ability to represent spatial and temporal extent and the participants in the event.

Getting Smart? A Research Note into Smart Tourism Curriculum and Implications on Generation Alpha and Beta

  • Aaron Tham;Husna Zainal Abidin
    • Journal of Smart Tourism
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    • v.3 no.1
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    • pp.35-39
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    • 2023
  • This research note probes the largely ignored sphere of smart tourism curriculum as destinations and institutions seek to develop graduates ready to embrace the demands and challenges of future work environments where technology has a ubiquitous presence. This knowledge gap is somewhat surprising, even as destinations progress towards smart tourism futures, without necessarily clarifying what human resources need to possess in the coming decades. Drawing from available smart tourism curriculum across the globe, and emergent trends associated with Generation Alpha and Beta, this research note paints a timely picture of how smart tourism curriculum should be designed and developed to meet the needs of industry and consumer demands and expectations.