bluuebunny/crossref_metadata_2025 huggingface dataset:
Connected BIM Models Towards Industry 4.0
Authors: De Luca Daniela , Dettori Monica , Del Giudice Matteo , Osello Anna
Published: March 2021

In the era of the fourth industrial revolution, the cyber physical systems, intended as enabling tools to generate an autonomous system, able to facilitate the relationships between different and distant objects and subjects, allow to digitalize the production system, in order to better outline what constitutes the smart factory. The benefit of such systems is the ability to associate to physical objects and virtual or digital models useful information related to the analyzed object, such as life cycle, geometry, mechanical properties, and parameters related to management and maintenance. This contribution aims to evaluate building information modeling methodology in the industrial context, as a cyber-physical system, developing flexible 3D parametric models as a data set, where information can be visualized and optimized management, using different visualization tools. The research has underlined the importance to share information between virtual and real worlds through virtual and augmented reality (VAR) systems.
Smart City and Digital Twins
Authors: Giaveno Sara
Published: March 2021

The chapter proposed aims at facing the various implications underlying the smart city concept based on digital twins. The structure of the text is articulated in three main themes: the use of the term “smart city” and the role that technologies had in its definition; the “3D city model” meaning and the integration procedures between BIM (building information modeling) and GIS (geographic information system); the classification of 3D city models by use cases. The chapter can provide researchers with a detailed dissertation aimed at clarifying both the theoretical and technical features belonging to smart city and its related innovative technologies.
Exploiting BIM and Sensor Data Through Web-Based CAFM
Authors: Di Staso Umberto , Piovano Marco , Barbini Ambra , Matt Dominik T.
Published: March 2021

Technological progress and the evolution of the directives concerning the construction sector have led to a significant digitalization of information concerning buildings. One of the challenges that have arisen concerns the use of data in the phases of the life cycle following the construction. How can this information be exploited? Is it possible to use it directly in a facility management tool that is within the reach of expert users and not? The aim of this chapter is reporting the developed framework to support the management and maintenance operations in buildings, defined within the project AR4FM - Augmented Reality for Facility Management. In particular, AR4FM aims to create an innovative software ecosystem that uses the most modern technologies to support facility management (FM) operations through a set of bespoke applications. The first tool is the web-based ICT platform usable through web-browser, while the second tool refers to a mobile App, called AR4FM mobile app, which will enable visualization for both mobile and wearable devices, such as smart-glasses.
Blockchain Advances and Security Practices in WSN, CRN, SDN, Opportunistic Mobile Networks, Delay Tolerant Networks
Authors: Jayatunga Eranda Harshanath , Ranaweera Pasika Sashmal , Balapuwaduge Indika Anuradha Mendis
Published: March 2021

The internet of things (IoT) is paving a path for connecting a plethora of smart devices together that emerges from the novel 5G-based applications. This evident heterogeneity invites the integration of diverse technologies such as wireless sensor networks (WSNs), software-defined networks (SDNs), cognitive radio networks (CRNs), delay tolerant networks (DTNs), and opportunistic networks (oppnets). However, the security and privacy are prominent conundrums due to featured compatibility and interoperability aspects of evolving directives. Blockchain is the most nascent paradigm instituted to resolve the issues of security and privacy while retaining performance standards. In this chapter, advances of blockchain technology in aforesaid networks are investigated and presented as means to be followed as security practices for pragmatically realizing the concepts.
Towards Utilizing Blockchain for Countering Distributed Denial-of-Service (DDoS)
Authors: Swami Rochak , Dave Mayank , Ranga Virender , Tripathi Nikhil , Kalayil Shaji Abhijith , Sharma Avani
Published: March 2021

Distributed denial of service (DDoS) attacks have been a matter of serious concern for network administrators in the last two decades. These attacks target the resources such as memory, CPU cycles, and network bandwidth in order to make them unavailable for the benign users, thereby violating availability, one of the components of cyber security. With the existence of DDoS-as-a-service on internet, DDoS attacks have now become more lucrative for the adversaries to target a potential victim. In this work, the authors focus on countering DDoS attacks using one of the latest technologies called blockchain. In inception phase, utilizing blockchain for countering DDoS attacks has proved to be quite promising. The authors also compare existing blockchain-based defense mechanisms to counter DDoS attacks and analyze them. Towards the end of the work, they also discuss possible future research directions in this domain.
The Mobility Open Blockchain Initiative
Authors: Powell Loreen M. , Schwartz Jessica , Hendon Michalina
Published: March 2021

Technological advancements in the transportation/automotive industry are continually increasing due to competition and consumer demands. The mobile open blockchain initiative (MOBI) is one way organizations are coming together to share innovating ways to revolutionize the transportation/automotive industry. This chapter explains the events that lead to the innovation of an open consortium, MOBI, and its members and highlights some of the cutting-edge technologies and innovative methods where blockchain is being adopted by the transportation/automotive industry.
Blockchain Revolution
Authors: Sharma Archana , Gupta Purnima
Published: March 2021

As the base of bitcoin, the blockchain has received widespread consideration recently. Blockchain stands for an immutable ledger which permits transactions to occur in a decentralized ways. Applications based on blockchain are numerous for instance financial services, industrial and supply chain services, legal and healthcare services, IoT and blockchain integration, bigdata analytics, and so on. Nevertheless, there are still numerous confronts of blockchain technology like security and fork problems that have to be resolved. This research highlights an inclusive indication on blockchain technology with blockchain architecture in the first phase. And in the second phase, the security challenges and problems associated with blockchain are highlighted. It further proposes and measures up to various typical consensus algorithms used in different blockchains. Research has been concluded with the potential prospects of blockchain as future trends.
Advancement of Circular Economy
Authors: Bradač Hojnik Barbara
Published: March 2021

This chapter provides an overview of the topic circular economy from a European perspective. It focuses on the actual implementation of circular models and processes. Although the European Commission has been trying to address the issue for years and provides many measures, the results of different indicators show a lack of implementation. Therefore, the main challenge of the next stage of development of Circular Economy 4.0 is to develop an inclusive system that involves all relevant stakeholders. This is because only through the efforts of limited groups of stakeholders (e.g., companies), the concept cannot be fully implemented in practice. Instead, the circular economy must become part of the broader culture, the way of thinking and acting of all stakeholders involved. This issue represents the main challenges for the next 10-year period in Europe.
Core Competencies and Innovation for Library and Information Science Professional in 21st Century Digital-Based Environments
Authors: Awoyemi Robert Akinade
Published: March 2021

Academic libraries and information technology centres are under serious threat due to the increasing pressure to achieve higher level of performance in a competitive global environment. Most of these challenges are as result of information communication technology (ICT) and digital revolution. This chapter discusses the impact of digital revolution on academic libraries and the need to acquire core competencies and new skills to effectively the 21st century academic libraries and information technology centres. Further, the author examines the sets of skills required by Library and Information Science (LIS) professionals to survive in the digital-based environments.
Expanding the Awareness and Use of Library Collections Through Social Media
Authors: Hoh Anchi
Published: March 2021

The Library of Congress houses more than 164 million items in various formats, languages, and subjects. Found among its treasures are the international collections. The Library's four area studies divisions—African and Middle Eastern (AMED), Asian, European, and Hispanic—reading rooms provide access to many of these resources. In 2016, the four area studies divisions launched a collaborative social media program to encourage the use of the library's international collections by domestic and global online audiences. The program adopted the 4 Corners of the World blog and the Library of Congress International Collections Facebook page as interactive social media tools. This chapter will examine the interdivisional initiative through its purpose, target audience, content focus, platform selection, management and operation, audience interaction, and current status. Next, the chapter will discuss challenges and opportunities facing the four divisions. Finally, the chapter will offer recommendations for other libraries that are interested in establishing a similar program.
Enhancing an Academic Library's Social Media Presence Using Peer-to-Peer Marketing
Authors: Eby Laurel D. , Thomas Elisabeth A.
Published: March 2021

The San José State University Library first became involved in social media in 2011 with the formation of a social media team. The team quickly realized that maintaining an academic library's social media presence—creating original content, monitoring posts and feeds, and maximizing exposure to the library's target audience—can take a sizeable chunk of time. Additionally, it is important to understand student preferences regarding the kind of content they are interested in seeing from their university library on social media so that the time spent creating content has not been wasted. This chapter will discuss how the social media team dealt with these questions and others, such as how to adapt to the regularly changing world of social media and how to reap the benefits of hiring student assistants to help create an engaging, relevant social media presence.
Emerging Technologies, Information Provision, and Libraries
Authors: Muunga Alexious
Published: March 2021

The advent of computers and information communication technologies (ICTs) has drastically changed the acquisition, storage, and retrieval of information. Further, information can be accessed through various media as new technologies continue to spring up. Since information can be accessed anywhere as long as one has internet connectivity, this has resulted in many users not using the libraries and other information centers. The decline in the use of libraries is worrying, hence the need to understand how the emerging technologies have changed information provision in the libraries. The chapter addresses challenges that affect the provision of the needed services in the libraries. Finally, alternative services that libraries are adopting in order for them to remain relevant in this information age are outlined. This chapter provides insights on how libraries can continue to play their role as information providers and how they can fit into the present information age.
Relevance of Web 2.0 for Library Services in Digital Era
Authors: Aba Jane Igie , Makinde Theresa Osasu
Published: March 2021

The chapter examined relevance of Web 2.0 for library services in digital era. it has been concluded that Web 2.0 tools play crucial role in effective service delivery of librarians. The chapter covers awareness, utilization; benefits and challenges that affect the use of Web 2.0 by librarians for effective service delivery. The concepts generally implied that Web 2.0 can be used by librarians as information acquisition tools that are used to gather information from sources outside libraries (for example, blogs and wikis), information dissemination tools that are used to distribute content and information to patrons (such as RSS feeds), information organization tools that facilitate storage and subsequent retrieval of information (social bookmarking and tagging), and information sharing tools that facilitate the bilateral flow of information between libraries and patrons (social networking and media sharing sites. It was concluded that Web 2.0 tools play crucial role in effective service delivery of librarians. Therefore, librarians should be proactive in the adoption and use of upgrade of web 4.0 which is more current than Web 2.0 to become relevant in the digital era.
Application of Mobile Technologies in Library Service Delivery
Authors: Obinyan Oluwatoyin Oyeyemi
Published: March 2021

The chapter emphasised the rapid advancement in technology in last two decades, mainly because of the advent of Internet, the world no longer works the same. The chapter explains that the advent of wireless networks and more recently mobile devices such as smart phones, tablets etc. following the internet, contributed a lot their applicability in library's operations. As contained in extant literature, mobile devices have become a very important part of communication not only for telephone service users but also for the internet users. The two main reasons behind success of mobile technology is the benefits such as mobility and ubiquity served by mobile devices. It is on that that the chapter explores the application of mobile technology on service delivery in libraries, the advantages and disadvantages, also highlighted were the skills required by the librarians in incorporating mobile technologies to library services.
Social Bookmarking in Digital Libraries
Authors: Kwanya Tom
Published: March 2021

This chapter elucidates the concept of social bookmarking, its benefits in digital libraries as well as the implications of its use on the intellectual property rights of the creators of the bookmarked works. The author concludes that digital libraries can use social bookmarking as a means of increasing access to and sharing of information resources; improve web searching; as well as to enhance collaboration in the creation and use of information. Since social bookmarks are, by and large, public descriptions of and pointers to the original resources, digital libraries do not infringe the intellectual property rights of their creators. Nonetheless, the libraries should watch against copying large volumes of content from the original resource as this may be construed as an intellectual competition with the bookmarked resource. Digital libraries are advised to develop and apply social bookmarking policies to streamline their use of social bookmarks.
Unlocking the Unlimited Potentials of Koha OSS/ILS for Library House-Keeping Functions
Authors: Adesola Adekunle P. , Olla Grace Omolara O.
Published: March 2021

Drawing praxis from Bowen University, Nigeria and other libraries worldwide, the chapter unveils the limitless capabilities of Koha ILS to successfully manage core library house-keeping functions—cataloging, acquisitions, circulation control, patrons' management, OPAC, serials, and report generation—in one seamless whole. Web-based features like its flexibility, adaptability, interoperability, MARC, Z39.50, patrons' ability for online logging in, registration, renewal, and many more were revealed. Also, reasons for its global adoptability, benefits, likely challenges, and solutions from practitioners were also highlighted. The chapter concludes that despite the puny but eventually surmounted challenges, Koha holds unlimited potential for libraries of any shape/size by just garnering from the experiences of subsisting users of the software globally.
Academic and Research Libraries' Portals
Authors: Blummer Barbara , Kenton Jeffrey M.
Published: March 2021

This chapter presents a synthesis of the literature on academic library portals. Library portals remain a component of the modern academic library. Portal features differ, but typically contain a single authentication process and access to metadata as well as some services. The authors examined 87 papers in their review. This examination revealed six themes including: developing library portals, utilizing assessment strategies, collaborating on portal projects, incorporating personalization and customization features, conducting environmental scans, and creating instructional portals. The authors assigned themes to the papers based on the primary focus of the material. The findings revealed various issues with the development of academic library portals. The content of academic library portals continues to evolve as their importance to the user increases. Ultimately, an examination of the literature illustrated academic libraries' efforts to remain relevant through the availability of new resources and services on their portals.
Use of E-Resources Through Consortia With Special Reference to College Libraries
Authors: Suresh M. , Natarajan R.
Published: March 2021

A consortium is an association of two or more individuals, companies, organizations or governments (or any combination of these entities) with the objective of participating in a common activity or pooling their resources for achieving a common goal. Library consortium gives the freedom for a library having a smaller collection to access any product at a nominal price. The chapter has shown that 58 (31.53%) assistant professors occasionally use it, followed by 44 (23.92%) respondents using it frequently, 39 (21.2%) respondents use it rarely, 26 (14.14%) respondents use it very frequently, and 17 (09.24%) respondents never use it.
The Use of Electronic Library Resources in Nigerian Universities
Authors: Sadiku Shaibu Adona , Issa Abdulwahab Olarenwaju , Mohammed Mohammed Kpakiko
Published: March 2021

A number of studies have focused on the use of e-libraries, drawing numerous conclusions about the use and challenges facing e-libraries. This article therefore presents a review of the literature on the use of e-libraries in universities with a particular interest in Nigerian institutions. The article examines the concepts and the antecedents of electronic libraries. The review shows that a number of approaches have been used to assess the use of e-libraries, and that computer self-efficacy has an impact on the performance while technological innovation, by extension, enhances the satisfactory use of electronic library systems. In addition, the review underscores the fact that there are few studies that pay attention to the satisfactory usage of electronic libraries in Nigerian universities. The article thus concludes by restating the important roles those e-libraries play in information service delivery. Recommendations for further studies on the mode and modalities with which effective training is conducted especially in the area of information search skills are made.
Entrepreneurial Logics in International Entry Mode Decisions
Authors: Macovei Valentina , Hagen Birgit
Published: March 2021

The aim of this paper is, through a two-staged literature review, to identify the role and impact of causation, effectuation, and bricolage logics during internationalization and, in particular, in entry-mode choice. The results show that entrepreneurs in their internationalization decisions can follow one, a combination, or a sequence of logics depending on the venture's or its international lifecycle and experience, the (perceptions of) internal and external context, and network relations. Likewise, entry modes such as JVs, strategic alliances, and export can be driven by different logics or their combination, while foreign direct investment is predominantly driven by causation logic. Bricolage has received little attention in extant work and, thus, is a future avenue for research. Research, although growing in importance, falls short of longitudinal studies, which are necessary to identify shifts, and, importantly, performance consequences of different decision-making logics.
Decision Making and Entrepreneurial Orientation of SMEs
Authors: Kowalik Izabela , Danik Lidia , Pleśniak Agnieszka , Duliniec Elżbieta
Published: March 2021

Recently there have been several reports concerning the SMEs' decision-making in the foreign markets, including the discussion comparing the so-called “effectual” decision-making style with the causative one. The study aims to investigate the nature of the decision making of SME-exporters and to analyze the relationship of the decision-making style with their entrepreneurial orientation. A mixed-mode CAWI/CATI method was applied to 300 Polish SMEs from the manufacturing sector in the Spring of 2018. To assess their decision making, the scale based on Chandler et al. was used, and to evaluate their entrepreneurial orientation, the scale adapted from Fiore et al. was used. As it was found, formal planning dominated the studied firms' decision making. The more advanced international players relied more on formalized contracts with their partners than the other firms. Moreover, there exists a positive and significant association of decision making with entrepreneurial orientation dimensions.
Generalized Entropy and Similarity Measure for Interval-Valued Intuitionistic Fuzzy Sets With Application in Decision Making
Authors: Tiwari Pratiksha
Published: March 2021

Interval-valued intuitionistic fuzzy environment is appropriate for most of the practical scenarios involving uncertainty, vagueness, and insufficient information. Entropy, similarity, distance, inclusion, and cross entropy measures are a few methods used for measuring uncertainty and classifying fuzzy sets and its generalizations. Entropy of a fuzzy set describes fuzziness degree of the set and similarity measure measures similarity between two fuzzy or members of its extended family. This paper presents generalized entropy and similarity measures for interval-valued intuitionistic fuzzy sets. Further, the proposed similarity measure is compared with some existing measure of similarity with the help of an illustrative example, and a method is used to define optimal point using the existing information. Finally, entropy and similarity measures are used to identify best alternatives to solve multi-attribute decision making.
Substantiation of Parameters of Friction Elements of Bernoulli Grippers With a Cylindrical Nozzle
Authors: Mykhailyshyn Roman , Savkiv Volodymyr , Boyko Igor , Prada Erik , Virgala Ivan
Published: March 2021

The article provides a step-by-step justification of the parameters of the friction elements of the Bernoulli gripping devices with a cylindrical nozzle. The effect of friction element parameters on the lifting force of Bernoulli grippers with the classic design of the active surface and with the rounded-off nozzle and flat and toroidal surface is considered. Influence of friction elements location radius on grip lifting force is considered. Influence of friction elements shape on grip lifting force is considered. Effect of friction coefficient between friction elements of grip and object of manipulation on minimum required lifting force in order to perform handling operation is investigated. Influence of number of friction elements on Bernoulli grip lifting force is considered. For the grip design with the rounded-off nose and flat and toroidal surface when the elliptical friction elements overlap the end gap by 73%, the lifting force will increase by 7% in torsion with the lifting force without the friction elements.
Formability of AA7075 Sheet in Single Point Incremental Forming
Authors: Kumar Gautam , Maji Kuntal
Published: March 2021

This article presents formability analysis of aluminium alloy 7075 thin sheets in single point incremental forming (SPIF) through prediction of forming limit curve (FLC) and maximum formable wall angle. Deformation instability method based on tool-sheet contact and non-contact zones in incremental forming was used for the prediction of limit strains for plane strain and equi-biaxial stretching strain path. FLC of the material was also determined experimentally, after measuring limit strains for deformed sheet through groove test for the process. Further, maximum forming wall angle of the material was determined for deformed sheet in a square pyramid shape. The theoretical limit strains predicted by deformation instability approach were compared to the experimental values. Theoretically, calculated limit strains were observed to be higher for plane strain path but approximately close for equi-biaxial strain path compared to experimental limit strains. The maximum formable wall was found to be 55˚ for the material in the process.
Implementing Modern Human Resources Strategies in the Public Sector
Authors: Eid Riyad
Published: March 2021

The implementation of modern human resources concepts to public sector large organizations is still a relatively new topic for researchers and practitioners. Moreover, although branding has become more prominent in the public sector, its role with employees is under explored. By means of a multi-dimensional procedure, the authors have developed a scale of measurement of the internal branding antecedents and consequences in the public sector through 35 items grouped into six dimensions: (1) external customer orientation, (2) internal customer orientation, (3) internal service quality, (4) interdepartmental connectedness, (5) customer satisfaction, and (6) employee satisfaction. The importance of the proposed constructs was theoretically discussed and justified. Using a sample of 304 public sector employees, the constructs are then tested and validated. Amos 27 is used for this purpose. The overall results from the empirical assessment were positive, thus reflecting the appropriateness of the proposed constructs. This study provides new theoretical grounds for studying internal branding in the public sector. It also supplies public sector organizations with a number of operative factors that may be essential if they are to provide enhanced satisfaction to public needs. It is probably the first to provide an integrative perspective of internal branding constructs in the public sector.
Monte Carlo Optimization-Based QSAR Study of Some Indole-Based Mcl-1 Inhibitors
Authors: Nandi Sudipta , Ghosh Kalyan , Rathore Anju , Sahu Adarsh , Gayen Shovanlal
Published: March 2021

Myeloid cell leukemia (Mcl-1) protein, belonging to a large BCL2 family of proteins, is a significant target towards cancer chemotherapy. The over-expression of this protein is also responsible for the development and progression of severe multi-drug resistance in cancer patients. This present study has focused the attention towards unmasking of important structural fingerprints for promoting or hindering Mcl-1 inhibitory activity of some indole-based derivatives by using Monte Carlo optimization-based QSAR approach. Twenty-one robust classification models were generated. The best model (by using SMILES and HSG-based descriptors) was selected, and several important good and bad structural fingerprints for Mcl-1 inhibition were identified. Some of the fingerprints were matching with the earlier study (New J. Chem., 2020, 44, 17494-17506) and some new fingerprints were also generated. The modelling study will help the researchers in the lead optimization of some indole-based Mcl-1 inhibitors in the future.
QSAR Modeling and Prediction of Triptan Binding Affinities
Authors: Alland Lucas , Jacobson Solomon H.
Published: March 2021

The purpose of this study was to use quantitative structure-activity relationships (QSARs) to identify new triptan molecules that selectively bind to h 5-HT1B and h 5-HT1D to a greater extent than to the similar h 5-HT1A receptor in order to identify novel compounds that could lead to an alternative and potentially superior migraine relief drug. Due to its possibility in migraine abortive properties, binding affinities to h 5-HT1F were also modeled. Binding affinities for 12 different triptan drugs and structurally similar substances were compiled from the literature, and descriptors were generated for those and other potential drug candidates using a variety of programs. The most significant descriptors were identified using a stepwise model, and the final QSARs were built for each activity with those descriptors, and a neural network. QSARs for all four activities were validated using a holdback method and were all found to be highly accurate. With these QSARs, activities of novel compounds similar to triptan drugs were predicted and three potential drug candidates were suggested.
An Impact of Rapid Urbanization on Wetlands Destruction in Mumbai Metropolitan Region
Authors: Rode Sanjay Jayawant
Published: March 2021

Wetlands are playing an important role in sustaining human health and wellbeing. They support food production, water treatment and water supply, flood control, fishing, recreation, and wildlife habitat. But wetland areas are shrinking very fast all over the world due to the rapid growth of urbanisation. In devepoing countries, the destruction of the wetlands is widely observed. In India, the wetlands area, size, and number are declinging very fast due to population growth and urbanisation. Mumbai Metropolitan Region is not an exception to this phenomenon. The wetland area is significantly declining in all suburbs of region over the period of time. State government should come out with future plans, legislation, and co-ordination among various bodies and NGOs to protect wetlands in region. The protection and scientific conservation of wetlands will improve wetlands-related services and health of the people in the region.
Efficiency Analysis of Irrigation Tanks
Authors: Jana Sebak Kumar , Palanisami K.
Published: March 2021

Village tanks in some parts of India, particularly in dry zones, have been one of the most important water resources on which the rural communities depend on for their livelihood. Though these traditional water harvesting structures provide a number of services like drinking water and protective irrigation, their importance and contribution declined during the post-independence period. Recognising the importance of irrigation tanks for agricultural development, the central government and some state governments of India have taken various irrigation development programmes like tank rehabilitation to improve surface irrigation. The present study attempts to measure the efficiency of the selected 50 irrigation tanks in dry zones in the state of West Bengal in India. The efficiency scores of the selected irrigation tanks have been evaluated using the non-parametric technique of data envelopment analysis (DEA). The study reveals that there is a wide variation in efficiency scores across the tanks with an average efficiency score being 0.688. The Tobit regression analysis reveals that the tanks with private ownership and of smaller size have higher efficiency levels. The study outcomes from this research will be useful for policymakers to adopt right policy in the direction of sustainable development.
Understanding Rural Supply Chain Resilience
Authors: Duong Linh Nguyen Khanh , Wang Michael , Radics Robert I.
Published: March 2021

Globalisation increases the numbers of involved business partners and distances between origin and destination. It complicates and stretches supply chains. Consequently, supply chains are exposed to higher risks, especially in rural societies where there is limited access to technology and the society is isolated. The research literature of supply chain resilience identified factors contributing to risks, factors counterbalancing risks, and mechanisms to assess the resilience of supply chains. However, there remains a gap in the use of the existing risk and resilience factors to the specific context of the rural supply chain. This research contributes by providing a state-of-the-art review and identifies which factors should be used for the rural supply chains.
Hybrid High-Performance Computing Algorithm for Gene Regulatory Network
Authors: Elsayad Dina , Hamad Safawat , Shedeed Howida Abd-Alfatah , Tolba Mohamed Fahmy
Published: March 2021

This paper presents a parallel algorithm for gene regulatory network construction, hereby referred to as H2pcGRN. The construction of gene regulatory network is a vital methodology for investigating the genes interactions' topological order, annotating the genes functionality and demonstrating the regulatory process. One of the approaches for gene regulatory network construction techniques is based on the component analysis method. The main drawbacks of component analysis-based algorithms are its intensive computations that consume time. Despite these drawbacks, this approach is widely applied to infer the regulatory network. Therefore, introducing parallel techniques is indispensable for gene regulatory network inference algorithms. H2pcGRN is a hybrid high performance-computing algorithm for gene regulatory network inference. The proposed algorithm is based on both the hybrid parallelism architecture and the generalized cannon's algorithm. A variety of gene datasets is used for H2pcGRN assessment and evaluation. The experimental results indicated that H2pcGRN achieved super-linear speedup, where its computational speedup reached 570 on 256 processing nodes.
Effect of COVID-19 Quarantine Period on a Married Woman With Special Reference to a TIER-II Selected City in India
Authors: Ramanujam Elangovan , Sundareswaran R. , Suganya R. , Kamal Nashwa A.
Published: March 2021

COVID-19 is an infectious disease caused by a novel coronavirus that affects most of the people around the world in their respiratory system. The COVID-19 crisis has affected the married Indian women in a different way and overloads them in all aspects during the quarantine period. Across every domain, from health to the economy, safety to societal protection, education to occupation, this creates a greater impact irrespective of their professions. Psychological and economic impacts are felt especially by working women who are getting moderate and low income and close to the poverty line. Unpaid work has amplified at home, with children out of school, spouse work from home, intensified special care needs of elder persons, and other emotional uncertainties. To explore various impacts of lockdown due to COVID-19, this study analyzes the challenges and opportunities of a married woman with a special reference to TIER-II selected city in India.
Influence of the Steel Channel Shaped Shear Connectors on the Stability of the Simply Supported Steel Bridge without the Intermediate Bracing System in the Construction Stage
Authors: Nguyen Van Khai , Van Nghia Dai , Vo Van Tuong Khanh , Nguyen Rin Anh , Nguyen Phuc Gia , Huynh Chu An Le , Huynh Thi Ngoc
Published: March 2021

Steel bridge structure without intermediate bracing system (IBS) has been widely used in several countries and one of them is Japan. In this type of structure, the main steel girder is not reinforced by the stiffeners. The stiffness of the main girder is enhanced with steel plate directly welded to the top flange of the main girder, forming the “beams–system”. The reinforced concrete deck slab with the set of main girder and steel plate works compositely through steel shear connectors whose shape is C (channel) or I character. As for steel bridge structures, the main role of shear connectors is shear resistance between the concrete deck slab and steel girder plate in the exploitation stage. However, previous research has shown that the density of shear connectors influences on the stability as well as the stiffness of the bridge structure. Therefore, it has approved that this appurtenance is able to not only have the ability of shear resistance but also enhance the stiffness of the steel bridge structure which is particularly surveyed with the type of especial bridge structure – the steel bridge structure without IBS. Hence, the shear connectors in this kind of bridge structure are deliberately researched as an extra role in the construction stage. The following factors of the channel shape shear connectors would be researched for evaluating their impacting level on the stability of the special steel bridge structure: the properties (the length and the moment of inertia of the cross-section) and the density on the steel plate. Through the analysis of impacting level to the stability of three mentioned factors (the length and density of the shear connectors; the moment of inertia of the cross-section), the expected result is as following: 1) The minimum density of shear connectors is proposed. 2) The influence of the moment of inertia of the cross-section, the density, and the length on the stability is quite clear. 3) As for the economy, the optimal designed range among three factors is also suggested.
Hysteresis Loops of Base Isolation System - An Overview
Authors: Amir M.A. , Hamid N.H.
Published: March 2021

Recently, there are a lot of technological developments in the earthquake engineering field to reduce structural damage and one of them is a base isolation system. The base isolation system is one of the best technologies for the safety of human beings and properties under earthquake excitations. The aim of this paper is to review previous research works on simulation of base isolation systems for RC buildings and their efficiency in the safety of these buildings. Base isolation decouples superstructure from substructure to avoid transmission of seismic energy to the superstructure of RC buildings. The most effective way to assess the base isolation system for RC building under different earthquake excitations is by conducting experiment work that consumes more time and money. Many researchers had studied the behavior of base isolation system for structure through modeling the behavior of the base isolation in which base isolator is modeled through numerical models and validated through experimental works. Previous researches on the modeling of base isolation systems of structures had shown similar outcomes as the experimental work. These studies indicate that base isolation is an effective technology in immunization of structures against earthquakes.
Evaluation of Structure Performance under Seismic Load with Non-Liner Time History on High-Rise Building Affected by Kendeng Fault Earthquake Simulation
Authors: Refani A.N. , Tajunnisa Yuyun , Yudoprasetyo K. , Ghifari F. , Wahyudi D.I.
Published: March 2021

Indonesia is a country located in the convergence of small plates and large plates. Furthermore, this causes Indonesia to be high potentially to earthquake hazards. The newest geological research published by Geophysical Research Letter (2016) shows the existence of Fault Kendeng, a fault stretches along 300 km from South Semarang, Central Java, to East Java with a movement of 0,05 millimeter per year [1]. As a result of its research, an evaluation using a non-linear time history analysis for structural buildings is necessary. The objective of this study is to evaluate structural buildings using a non-linear time history analysis. This study applies DSHA (Deterministic Seismic Hazard Analysis) method to obtain acceleration time history on bedrocks. Since the record of ground movement in Indonesia is limited, the attenuation function equation used to scale and match other country’s time acceleration history data. SSA (Site-Specific Analysis) is used to propagate earthquake acceleration from bedrocks to the surface. The earthquake acceleration on the surface generates as the earthquake load on the buildings. The results of Kendeng fault earthquake simulation using non-linear time history analysis shows that column members capacity is more robust than beam members capacity which the beam collapse mechanism occurs initially. From the maximum total drift ratio result, when the Kendeng fault earthquake occurs, the building structure performance level is at collapse prevention level Based on ATC-40 [2]. This research result shows that 96,7% of plastic hinge has not yielded. However, some elements are already damaged. Since most damage members are column, then it may require column strengthening to enhance maximum performance level at life safety condition category.
Production of Bricks from Sludge of Palm Oil Mill Effluent (POME)
Authors: Nor Asikin Adi Fathi , Kasmuri Norhafezah , Ali Mohd Fozi
Published: March 2021

Malaysia has been recognized in recent decades as one of the world's leading palm oil producers and exporters. The number of palm oil mills multiplies each year, increasing the capacity of fresh fruit bunch waste or effluent discharged. Countless numbers of research and development, as well as implementation, have been dedicated to advancing the pollution control technologies. Most of the research is to treat and manage liquid and solid waste generated from palm oil mills. The main reason for such tremendous efforts is that the waste coming from palm oil mills has been declared as one of the pollution sources in the world. Thus, the purpose of this study was to utilize treated palm oil mill effluent (POME) sludge from the electrocoagulation process to produce bricks. Here, three different dilution rates, which was 60%, 90% and 100% of POME concentration have been analyzed in the electrocoagulation process, respectively. After the electrocoagulation process, the characteristics of POME effluents were evaluated, and the treated POME sludge was collected. Instead of being discarded after the treatment, the treated waste sludge from the electrocoagulation process was used to make bricks. Three different bricks labelled (A, B and C) from treated POME sludge from the electrocoagulation process (60%, 90% and 100%) were fabricated. These bricks have been analyzed based on the JKR Standard Specifications for Building Works. Data obtained showed that the compressive strength for the bricks (A, B and C) after seven days were 6.076, 8.233, and 6.344 N/mm2. Meanwhile, the bulk density of the bricks (A, B and C) were 2247.92, 2233.95, and 2094.33 kg/m3. The results showed that the compressive strength for these brick samples had met the JKR Standard Specification for Building Works of 5.2 N/mm2. It can be deduced that the bricks from treated POME can be a greener product compared to the traditional bricks. Moreover, the concept of a circular economy is adapted in this study to eliminate waste for a long-term sustainable environment.
Ab Initio Study of Helium in Tantalum: Interaction, Migration, and Clustering with Helium and Vacancies
Authors: Yin Wen , Jia Xue Jun , Ji Quan
Published: March 2021

Ab initio calculations based on the Density Function Theory (DFT) have been performed to study the interaction between helium and helium, helium and vacancy, migration of helium, and the stability of small helium-vacancy clusters in tantalum. The following results are found: (I) The tetrahedral interstitial helium atoms have weak interactions in tantalum, suggesting that no stable covalent bond is formed between this two helium atoms; (II) The stability of small helium-vacancy clusters is investigated. The interstitial helium atom and vacancy to the clusters are found to be positive in almost all case, i.e., all interactions are attractive; (III) The activation energies for a substitutional helium atom migration by the dissociation or vacancy mechanisms are estimated under the irradiation condition.
Post-Irradiation Examinations of SINQ Target-11
Authors: Dai Yong , Boutellier Viktor , Grabherr Robin Manuel , Urech Andreas , Blau Bertrand , Welte Joerg , Bertsch Johannes , Martin Matthias , Pouchon Manuel A. , Wohlmuther Michael
Published: March 2021

SINQ Target-11 was in operation in 2015 and 2016. It was shut down due to an incident in June 2016, during which the pressure drop in the cooling water loop increased significantly, and meanwhile, the activity of the cooling water also increased tremendously. The evidence indicated a serious failure of the target. As this is the first severe failure since SINQ came into operation in 1997, some post-irradiation examinations (PIE) were performed to analyze the failure mechanisms.
Effects of Helium Production and Displacement Damage on Microstructural Evolution and Mechanical Properties in Helium-Implanted Austenitic Stainless Steel and Ferritic/Martensitic Steel
Authors: Wakai Eiichi , Nogami Shuhei , Hasegawa Akira , Okubo Nariaki , Takaya Shigeru , Tanno Takashi , Nagae Yuji , Suzudo Tomoaki , Abe Hiroaki , Yamaguchi Masataka , Aoto Kazumi
Published: March 2021

The effects of helium concentration and displacement damage on microstructural evolution at low dpa and low helium concentration were mainly investigated in specimens of austenitic stainless steel 316FR or SUS304 and a high chromium martensitic steel (HCM12A). The 316FR and HCM12A specimens were implanted uniformly with helium at 823 K up to 30 appm-He or 50 appm-He by 50 MeV cyclotron accelerator using energy degraders. After the helium implantation, the microstructures were examined by a transmission electron microscopy and positron annihilation lifetime measurements. Irradiation hardening behaviors were analyzed using SUS304 and HCM12A steels at 823 K implanted with He ion up to 100 appm with different He/dpa ratios in the HIT ion irradiation experiments and the hardening behaviors were examined by nano indentation method. In the irradiation and annealing specimens, these mechanical properties and microstructures were examined to understand the effects of helium production, displacement damage and annealing on microstructural development, and kinetic Monte Carlo (kMC) simulations were also performed to understand the microstructural development, and the results were compared with the results of TEM observation and positron annihilation lifetime measurements. Important some differences in the microstructural developments such as cavity formation and growth between austenitic stainless steel and martensitic steel were observed in low dpa and low helium concentration conditions.
Change in the Positron Annihilation Lifetime of Vacancy Clusters Containing Hydrogen Atoms in Electron-Irradiated F82H
Authors: Sato Koichi , Kondo Yohei , Ohta Masakiyo , Xu Qiu , Yabuuchi Atsushi , Kinomura Atsushi , Onoue Masahira , Onitsuka Takashi , Hatakeyama Masahiko , Iwakiri Hirotomo , Kato Daiji , Watanabe Yoshiyuki , Tanigawa Hiroyasu
Published: March 2021

The change in the positron annihilation lifetime (PAL) of vacancy clusters before and after electrolysis hydrogen charging was determined using PAL measurements in electron-irradiated F82H. The experimental change indicated 8 hydrogen atoms were trapped in vacancy clusters; whereas the theoretical calculation resulted in approximately 14 atoms. As the samples were left at room temperature for 5 min until the start of the PAL measurements, the de-trapping effect of hydrogen atoms was also considered; approximately 13 hydrogen atoms were captured at each vacancy cluster. The PAL decreased after annealing at 148 K, which could not be explained theoretically. Therefore, further experiments and discussions are needed to obtain a precise change in the PAL of vacancy clusters containing hydrogen atoms in F82H.