scholarly journals A Review of the Polymer for Cryogenic Application: Methods, Mechanisms and Perspectives

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 320
Author(s):  
Duo Chen ◽  
Juanzi Li ◽  
Yuhuan Yuan ◽  
Chang Gao ◽  
Yunguang Cui ◽  
...  
Keyword(s):  
Liquid Oxygen ◽  
Future Research ◽  
Research Development ◽  
Thermoplastic Polymers ◽  
Comprehensive Overview ◽  
Research Directions ◽  
Practical Applications ◽  
Application Potential ◽  
Future Research Directions ◽  
Cryogenic Application

Recently, the application of polymer-based composites at cryogenic conditions has become a hot topic, especially in aerospace fields. At cryogenic temperature, the polymer becomes more brittle, and the adverse effect of thermal stress induced by temperature is more remarkable. In this paper, the research development of thermoset and thermoplastic polymers for cryogenic applications are all reviewed. This review considers the literature concerning: (a) the cryogenic performance of modified thermoset polymers and the improving mechanisms of the reported modification methods; (b) the cryogenic application potential of some commercial thermoplastic polymers and the cryogenic performance of modified thermoplastic polymers; (c) the recent advance in the use of polymer for special cryogenic environment-liquid oxygen. This paper provides a comprehensive overview of the research development of the polymer for cryogenic application. Moreover, future research directions have been proposed to facilitate its practical applications in aerospace.

scholarly journals Distributed Ledger Technology Applications in Food Supply Chains: A Review of Challenges and Future Research Directions

2021 ◽  
Vol 13 (8) ◽  
pp. 4206
Author(s):  
Jamilya Nurgazina ◽  
Udsanee Pakdeetrakulwong ◽  
Thomas Moser ◽  
Gerald Reiner
Keyword(s):  
Supply Chains ◽  
Food Supply ◽  
Information Exchange ◽  
Security And Privacy ◽  
Future Research ◽  
Research Directions ◽  
Practical Applications ◽  
Food Supply Chains ◽  
Distributed Ledger ◽  
Future Research Directions

The lack of transparency and traceability in food supply chains (FSCs) is raising concerns among consumers and stakeholders about food information credibility, food quality, and safety. Insufficient records, a lack of digitalization and standardization of processes, and information exchange are some of the most critical challenges, which can be tackled with disruptive technologies, such as the Internet of Things (IoT), blockchain, and distributed ledger technologies (DLTs). Studies provide evidence that novel technological and sustainable practices in FSCs are necessary. This paper aims to describe current practical applications of DLTs and IoT in FSCs, investigating the challenges of implementation, and potentials for future research directions, thus contributing to achievement of the United Nations’ Sustainable Development Goals (SDGs). Within a systematic literature review, the content of 69 academic publications was analyzed, describing aspects of implementation and measures to address the challenges of scalability, security, and privacy of DLT, and IoT solutions. The challenges of high costs, standardization, regulation, interoperability, and energy consumption of DLT solutions were also classified as highly relevant, but were not widely addressed in literature. The application of DLTs in FSCs can potentially contribute to 6 strategic SDGs, providing synergies and possibilities for more sustainable, traceable, and transparent FSCs.

scholarly journals Beyond Intra-modality: A Survey of Heterogeneous Person Re-identification

2020 ◽  
Author(s):  
Zheng Wang ◽  
Zhixiang Wang ◽  
Yinqiang Zheng ◽  
Yang Wu ◽  
Wenjun Zeng ◽  
...  
Keyword(s):  
Video Analysis ◽  
State Of The Art ◽  
Future Research ◽  
Low Resolution ◽  
Research Directions ◽  
Comprehensive Review ◽  
Practical Applications ◽  
Future Research Directions

An efficient and effective person re-identification (ReID) system relieves the users from painful and boring video watching and accelerates the process of video analysis. Recently, with the explosive demands of practical applications, a lot of research efforts have been dedicated to heterogeneous person re-identification (Hetero-ReID). In this paper, we provide a comprehensive review of state-of-the-art Hetero-ReID methods that address the challenge of inter-modality discrepancies. According to the application scenario, we classify the methods into four categories --- low-resolution, infrared, sketch, and text. We begin with an introduction of ReID, and make a comparison between Homogeneous ReID (Homo-ReID) and Hetero-ReID tasks. Then, we describe and compare existing datasets for performing evaluations, and survey the models that have been widely employed in Hetero-ReID. We also summarize and compare the representative approaches from two perspectives, i.e., the application scenario and the learning pipeline. We conclude by a discussion of some future research directions. Follow-up updates are available at https://github.com/lightChaserX/Awesome-Hetero-reID

A review on the mechanical properties of textile structural composite T-beams

2019 ◽  
Vol 90 (5-6) ◽  
pp. 710-727 ◽  
Author(s):  
Yiwei Ouyang ◽  
Xianyan Wu
Keyword(s):  
Mechanical Properties ◽  
High Performance ◽  
Raw Materials ◽  
Research Progress ◽  
Future Research ◽  
Research Directions ◽  
Structural Composite ◽  
Delamination Resistance ◽  
Application Potential ◽  
Future Research Directions

In order to review the most effective ways to improve the mechanical properties of composite T-beams and further increase their application potential, research progress on the mechanical properties of textile structural composite T-beams was summarized based on two-dimensional (2-D) ply structure composite T-beams, delamination resistance enhanced 2-D ply structure T-beams, and three-dimensional (3-D) textile structural composite T-beams; future research directions for composite T-beams were also considered. From existing literature, the research status and application bottlenecks of 2-D ply structure composite T-beams and T-beams with enhanced delamination resistance performance were described, as were the specific classification, research progress, and mechanical properties of 3-D textile structural composite T-beams. In addition, the superior mechanical properties of 3-D braided textile structural composite T-beams, specifically their application potential based on excellent delamination resistance capacity, were highlighted. Future research directions for composite T-beams, that is, the applications of high-performance raw materials, locally enhanced design, structural blending enhancement, functionality, and intelligence are presented in this review.

Indigenous alder based farming practices in Nagaland, India: A sustainable agricultural model

2018 ◽  
Vol 5 (2) ◽  
Author(s):  
Mechuselie Kehie
Keyword(s):  
Agricultural Land ◽  
Agroforestry System ◽  
Deciduous Tree ◽  
Future Research ◽  
Agricultural Crops ◽  
Farming Practices ◽  
Comprehensive Overview ◽  
Research Directions ◽  
Ecological Farming ◽  
Future Research Directions

Traditional alder (Alnus nepalensis) based agroforestry system is an age-old ecological farming practice of some indigenous tribes viz., Angami, Chakhesang, Chang, Yimchunger and Konyak of Nagaland state in India. Alder is a deciduous or semi-deciduous tree naturally grown throughout the Himalayas. In this system of farming, crops are grown as intercrop with alder trees. Agricultural crops co-cultivated with alder, forms a very remunerative agroforestry system. Alder does not require high soil fertility and hence, conversion of wasteland into agricultural land through this system is very much practicable. This system is an outstanding sustainable model of land use evolved through numerous years of testing among the indigenous tribes of Nagaland. The present review presents a comprehensive overview of indigenous alder based farming practices in Nagaland. Furthermore, the paper also describes the opportunities, challenges and future research directions towards developing and utilizing this model for sustainable agriculture.

Co-Creative Learning in Innovation Laboratories Using Lego Serious Play Workshops

2020 ◽  
pp. 2050051
Author(s):  
Odeh R. Al-Jayyousi ◽  
Christopher M. Durugbo
Keyword(s):  
Middle Eastern ◽  
Future Research ◽  
Research Directions ◽  
Practical Applications ◽  
Creative Learning ◽  
Shared Stories ◽  
Learning Scenarios ◽  
Future Research Directions ◽  
Physical Spaces

Although innovation laboratories offer creative and distinct physical spaces for mediating and directing innovation processes, research on their applicability for co-creative learning during serious play, particularly through Lego Serious Play (LSP) workshops remains limited. Previous studies suggest that serious play workshops tend to focus on scenarios, problem solving and reflective processes, with limited considerations for joint co-creation and learning potentials within innovation laboratories. Motivated by the creative prospects of metaphoric representations and shared stories, this study explores the possibilities of harnessing LSP for co-creative learning in innovation laboratories. This case study draws theoretical insights and practical relevance from a co-creative learning workshop involving three learning scenarios within a Middle Eastern and emerging economy context. Findings from the workshop show variability in representations, interactions and reflections, shaping possibilities for co-creative learning in innovation laboratories. Representations focus on systems, solutions and problems during fragmented, model-supported, model-mediated and integrated interactions that underpin a range of instance-based, variance-based, convergence-based and divergence-based reflections. These insights contribute to co-creation literature that views value creation as an amalgamation of open, collaborative and user innovation. The study concludes by discussing its theoretical implications, practical applications, and methodological limitations, which serve as the basis for future research directions.

scholarly journals Interfaced heterogeneous nanodimers

2015 ◽  
Vol 2 (3) ◽  
pp. 329-348 ◽  
Author(s):  
Yugang Sun
Keyword(s):  
Strong Coupling ◽  
Synthesis And Characterization ◽  
Future Research ◽  
Comprehensive Overview ◽  
Research Directions ◽  
Nanoscience And Nanotechnology ◽  
Materials Research ◽  
Future Research Directions

Abstract Dimerization of different nanocomponents in single nanoparticles becomes interesting due to not only inheritance of properties of both components but also generation of new properties associated with strong coupling of the two components. As a class of emerging nanomaterials, interfaced heterogeneous nanodimers (IHNDs) are attracting more attentions in the field of materials research, in particular, nanoscience and nanotechnology. This review provides a timely and comprehensive overview on the general principles for the synthesis of IHNDs and typical examples of IHNDs made of various compositional combinations. The current challenges related to the synthesis and characterization of IHNDs are summarized at the end of the review and future research directions are also discussed.

A Survey on Privacy Preserving Dynamic Data Publishing

2018 ◽  
Vol 8 (4) ◽  
pp. 1-20 ◽  
Author(s):  
Salheddine Kabou ◽  
Sidi mohamed Benslimane ◽  
Mhammed Mosteghanemi
Keyword(s):  
Data Privacy ◽  
Privacy Preservation ◽  
Personal Information ◽  
Privacy Preserving ◽  
Data Publishing ◽  
Future Research ◽  
Research Directions ◽  
Dynamic Data ◽  
Practical Applications ◽  
Future Research Directions

Many organizations, especially small and medium business (SMB) enterprises require the collection and sharing of data containing personal information. The privacy of this data must be preserved before outsourcing to the commercial public. Privacy preserving data publishing PPDP refers to the process of publishing useful information while preserving data privacy. A variety of approaches have been proposed to ensure privacy by applying traditional anonymization models which focused only on the single publication of datasets. In practical applications, data publishing is more complicated where the organizations publish multiple times for different recipients or after modifications to provide up-to-date data. Privacy preserving dynamic data publication PPDDP is a new process in privacy preservation which addresses the anonymization of the data for different purposes. In this survey, the author will systematically evaluate and summarize different studies to PPDDP, clarify the differences and requirements between the scenarios that can exist, and propose future research directions.

scholarly journals Ensuring the Correctness of Regular Expressions: A Review

2021 ◽  
Author(s):  
Li-Xiao Zheng ◽  
Shuai Ma ◽  
Zu-Xi Chen ◽  
Xiang-Yu Luo
Keyword(s):  
Future Research ◽  
Regular Expressions ◽  
Automatic Synthesis ◽  
Research Directions ◽  
Practical Applications ◽  
Advantages And Disadvantages ◽  
Correct Usage ◽  
Study Test ◽  
Future Research Directions ◽  
Static Checking

AbstractRegular expressions are widely used within and even outside of computer science due to their expressiveness and flexibility. However, regular expressions have a quite compact and rather tolerant syntax that makes them hard to understand, hard to compose, and error-prone. Faulty regular expressions may cause failures of the applications that use them. Therefore, ensuring the correctness of regular expressions is a vital prerequisite for their use in practical applications. The importance and necessity of ensuring correct definitions of regular expressions have attracted extensive attention from researchers and practitioners, especially in recent years. In this study, we provide a review of the recent works for ensuring the correct usage of regular expressions. We classify those works into different categories, including the empirical study, test string generation, automatic synthesis and learning, static checking and verification, visual representation and explanation, and repairing. For each category, we review the main results, compare different approaches, and discuss their advantages and disadvantages. We also discuss some potential future research directions.

scholarly journals Hashtag Recommendation Methods for Twitter and Sina Weibo: A Review

2021 ◽  
Vol 13 (5) ◽  
pp. 129
Author(s):  
Areej Alsini ◽  
Du Q. Huynh ◽  
Amitava Datta
Keyword(s):  
Systematic Review ◽  
Digital Libraries ◽  
Future Research ◽  
Research Papers ◽  
Comprehensive Overview ◽  
Research Directions ◽  
Sina Weibo ◽  
Social Media Platforms ◽  
Future Research Directions ◽  
Textual Content

Hashtag recommendation suggests hashtags to users while they write microblogs in social media platforms. Although researchers have investigated various methods and factors that affect the performance of hashtag recommendations in Twitter and Sina Weibo, a systematic review of these methods is lacking. The objectives of this study are to present a comprehensive overview of research on hashtag recommendation for tweets and present insights from previous research papers. In this paper, we search for articles related to our research between 2010 and 2020 from CiteSeer, IEEE Xplore, Springer and ACM digital libraries. From the 61 articles included in this study, we notice that most of the research papers were focused on the textual content of tweets instead of other data. Furthermore, collaborative filtering methods are seldom used solely in hashtag recommendation. Taking this perspective, we present a taxonomy of hashtag recommendation based on the research methodologies that have been used. We provide a critical review of each of the classes in the taxonomy. We also discuss the challenges remaining in the field and outline future research directions in this area of study.

scholarly journals A systematic review of circular economy research in the construction industry

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Oluyomi A. Osobajo ◽  
Adekunle Oke ◽  
Temitope Omotayo ◽  
Lovelin Ifeoma Obi
Keyword(s):  
Systematic Review ◽  
Construction Industry ◽  
Circular Economy ◽  
Research Question ◽  
Methodological Approach ◽  
Future Research ◽  
Comprehensive Overview ◽  
Research Directions ◽  
Content Type ◽  
Future Research Directions

PurposeWhile circular economy (CE) is fast becoming a political and economic agenda for global urban development, there are still substantial knowledge gaps in possible strategies to speed up such transition, especially in the construction industry. This study analyses literature surrounding CE to unpack current trends possible future research directions to foster CE implementation in the construction industry.Design/methodology/approachThe study undertakes a systematic review of CE literature published between 1990 and 2019. It adopts a five-stage procedure as a methodological approach for the review: formulation of the research question(s), locating and identifying relevant studies, selection and evaluation of studies, analysis or synthesis and results reporting.FindingsThe findings on CE research in the construction industry show extensive focus on resource use and waste management. There are limited investigations in other areas of construction such as supply chain integration, building designs, policy, energy efficiency, land use, offsite manufacturing, whole life costing, and risk, cost reduction, cost management, health and safety management. The study findings provide evidence that current CE practice fails to incorporate other areas that would facilitate the network of true circular construction industry.Originality/valueThis research provides a comprehensive overview of research efforts on CE in the construction context, identifying areas of extensive and limited coverage over three decades. Besides, it identifies possible pathways for future research directions on CE implementation, towards the accelerated transition to a true circular construction industry for the benefit of funding bodies and researchers.

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