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2020

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Role Of Library Professionals In Satisfying User Needs During Pandemic Phase, Sumaira Baba, Sofi Gh.Mohiuddin Jeelani, Dr Shabir Ahmed Ganaie Jan 2020

Role Of Library Professionals In Satisfying User Needs During Pandemic Phase, Sumaira Baba, Sofi Gh.Mohiuddin Jeelani, Dr Shabir Ahmed Ganaie

Library Philosophy and Practice (e-journal)

Libraries are considered as treasures of knowledge providing access to huge variety of materials (books, journals, manuscripts, audio/visual etc.) with the help of institutions to which these (libraries) are associated. But, the preservation of such knowledge (material) is also of prime importance in order to make these resources (material) available for information seekers. In this whole process of collection, storage as well as dissemination of (knowledge), library professionals (librarians) has a great role to play. Which cannot be separated at any cost. Even at the time of pandemic, their (library professionals) role need to be very much vibrant to benefit …

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Sustainable Development Initiatives In Libraries Based On The Covid 19 Experience: A Future Plan, Dr. Prakasan P.M. Jan 2020

Sustainable Development Initiatives In Libraries Based On The Covid 19 Experience: A Future Plan, Dr. Prakasan P.M.

Library Philosophy and Practice (e-journal)

The 2030 Agenda for Sustainable Development, adopted by the UN General Assembly in 2015, is working around the world to achieve the 17 goals. Governments and other institutions are preparing action plans to implement sustainable development ideas. Libraries are also developing and implementing various schemes to support sustainable development initiatives. It was at this juncture that the COVID-19 pandemic struck in 2020, shaking the social, economic, cultural, educational and healthcare sectors. In this context, sustainable development ideas are of great importance. The situation is such that in the post-COVID-19 era, more and more sustainable development activities have to be undertaken …

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Awareness And Utilization Of Search Engines For Information Retrieval By Students Of National Open University Of Nigeria In Enugu Study Centre Library, Sunday Jude Onuh, Ogoegbunam Loveth Ekwueme Jan 2020

Awareness And Utilization Of Search Engines For Information Retrieval By Students Of National Open University Of Nigeria In Enugu Study Centre Library, Sunday Jude Onuh, Ogoegbunam Loveth Ekwueme

Library Philosophy and Practice (e-journal)

This study dwelt on awareness and utilization of search engines for information retrieval by students of National Open University of Nigeria (NOUN) Enugu Study centre. Descriptive survey research was adopted for the study. Two research questions were drawn from the two purposes that guided the study. The population consists of 5855 undergraduate students of NOUN Enugu Study Centre. A sample size of 293 students was used as 5% of the entire population. A questionnaire was used as an instrument for data collection. These research questions were analyzed using mean and standard deviation scores. The findings showed that the level of …

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An Appraisal Of Research Delineate Of Jordan During 2015 To 2019: A Reflection From Scopus Database, Omar Al Jaradat Jan 2020

An Appraisal Of Research Delineate Of Jordan During 2015 To 2019: A Reflection From Scopus Database, Omar Al Jaradat

Library Philosophy and Practice (e-journal)

The study is perceived to find the research performance of Jordanian Institutes during the last five years in scopus database. Jordan has produced a total of 14722 research articles published in national and international journals during 2015 to 2019 with a continuous gradual increase both in publications as well as in citations. The public and older universities have performed better as compared to the private and newly established universities. Although, the major chunk of articles has been published in national journals however, as far as the citations are concerned, the international journals have taken a lead. A total of 4767 …

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Collection Development For Graphic Novels In Academic Libraries: Results Of A National Survey, Stephen Finlay Jan 2020

Collection Development For Graphic Novels In Academic Libraries: Results Of A National Survey, Stephen Finlay

Library Philosophy and Practice (e-journal)

A survey on collection development for graphic novels was sent to 632 collection development librarians and also placed on the Association for Library Collections and Technical Services listserv. Once 200 responses had been received analysis of results began. Findings indicate that while all libraries reported possessing at least some graphic novels and most reported having what they would call a “graphic novel collection,” the medium is still quite uncommon when compared to existing library collections, comprising less than 1% of all books in academic libraries. Further, while it was found that most libraries are currently collecting graphic novels, collection development …

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Beyond The Family Tree: Genealogy Instruction As A Gateway To Primary Source Literacy, Deedee Baldwin Jan 2020

Beyond The Family Tree: Genealogy Instruction As A Gateway To Primary Source Literacy, Deedee Baldwin

Library Philosophy and Practice (e-journal)

Say the word “genealogy” in an academic library, and you are bound to see weary librarians and archivists roll their eyes and sigh. But academic librarians can do more than accepting genealogists as a frustrating fact of life: they can recognize a perfect opportunity to teach primary source literacy concepts to a group that is more than open to learning them.

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Library Services And Resources For The Patrons With Disabilities: A Study In Selected College Libraries Of Jorhat District Of Assam, India, Niraj Barua, Zafrina Rahman Jan 2020

Library Services And Resources For The Patrons With Disabilities: A Study In Selected College Libraries Of Jorhat District Of Assam, India, Niraj Barua, Zafrina Rahman

Library Philosophy and Practice (e-journal)

A survey based study was undertaken in selected College libraries in Jorhat District of Assam, India to find out the current status of services and resources for the patrons with disabilities. A structured questionnaire was used to collect information from the librarians of the Colleges under the study. Convenience sampling method was used to select the libraries to be part of the study. Data coding and descriptive analysis of data was done using Microsoft Excel. Results show that majority of the College Libraries in Jorhat district are not in a position to provide adequate services to patrons with disabilities. Results …

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Emergency Management In Higher Education During Covid-19 Pandemic: A Phenomenology Inquiry Comparing A Developed And Developing Country, Saira Hanif Soroya, Mohsin Abdur Rehman, Zuhair Abbas, Farhan Mirza, Khalid Mahmood, Muhammad Aboidullah Jan 2020

Emergency Management In Higher Education During Covid-19 Pandemic: A Phenomenology Inquiry Comparing A Developed And Developing Country, Saira Hanif Soroya, Mohsin Abdur Rehman, Zuhair Abbas, Farhan Mirza, Khalid Mahmood, Muhammad Aboidullah

Library Philosophy and Practice (e-journal)

No abstract provided.

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Growth Of Open Access Law Research Articles Seen Through Doaj: A Bibliometric Analysis, Archana Sahu, Puspanjali Jena Prof. Jan 2020

Growth Of Open Access Law Research Articles Seen Through Doaj: A Bibliometric Analysis, Archana Sahu, Puspanjali Jena Prof.

Library Philosophy and Practice (e-journal)

This study provides a bibliometric analysis of law literature published from 2015-2019. A total of 3001 articles were retrieved from DOAJ database for the study. The law literature has been further divided into two categories, i.e. Public law and Private law. This paper focuses on the journal-wise distribution of publications, subject-wise distribution of publications, annual growth rate as well as compound annual growth rate, relative growth rate (RGR) and doubling time (DT) of open access law literature. Various statistical tests and methods such as Student’s t test, Chi-square test and correlation studies have been applied to verify the significance difference …

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Swimming Of Motile Gyrotactic Microorganisms And Nanoparticles In Blood Flow Through Anisotropically Tapered Arteries, M. M. Bhatti, M. Marin, A. Zeeshan, R. Ellahi, Sara I. Abdelsalam Jan 2020

Swimming Of Motile Gyrotactic Microorganisms And Nanoparticles In Blood Flow Through Anisotropically Tapered Arteries, M. M. Bhatti, M. Marin, A. Zeeshan, R. Ellahi, Sara I. Abdelsalam

Basic Science Engineering

In the present article, we have presented a theoretical study on the swimming of migratory gyrotactic microorganisms in a non-Newtonian blood-based nanofluid via an anisotropically narrowing artery. Sutterby fluid model is used in order to understand the rheology of the blood as a non-Newtonian fluid model. This fluid pattern has the ability to show Newtonian and non-Newtonian features. The mathematical formulation is performed via continuity, temperature, motile microorganism, momentum, and concentration equation. The series solutions are obtained using the perturbation scheme up to the third-order approximation. The resulting solutions are discussed with the help of graphs for all the leading …

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Adverse Effects Of A Hybrid Nanofluid In A Wavy Non-Uniform Annulus With Convective Boundary Conditions, H. Sadaf, Sara I. Abdelsalam Jan 2020

Adverse Effects Of A Hybrid Nanofluid In A Wavy Non-Uniform Annulus With Convective Boundary Conditions, H. Sadaf, Sara I. Abdelsalam

Basic Science Engineering

The presented investigation theoretically studies the physical characteristics of a two-dimensional incompressible hybrid nanofluid in a non-uniform annulus where the boundaries are flexible. A mixed convective peristaltic mechanism is implemented to model blood-based nanofluids using two different nanoparticles (Ag + Al2O3). Convective boundary conditions are employed and different forms of nanoparticles are discussed (bricks, cylinders and platelets). The problem is shortened by engaging a lubrication method. Exact expressions for the temperature of cumulative heat source/sink standards, hemodynamic velocity, pressure gradient and streamlines of different shapes of nanoparticles are obtained. Special cases of pure blood and the Al2O3 nanofluid of our …

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Editorial: Recent Trends In Computational Fluid Dynamics, M. M. Bhatti, M. Marin, A. Zeeshan, Sara I. Abdelsalam Jan 2020

Editorial: Recent Trends In Computational Fluid Dynamics, M. M. Bhatti, M. Marin, A. Zeeshan, Sara I. Abdelsalam

Basic Science Engineering

No abstract provided.

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Energy-Scape Web-Based Application Is An Effective Tool To Overcome The Basic Knowledge Of Architects Toward Renewable Energy Properties, Rania Rushdy Moussa, Khaled M. Dewidar Jan 2020

Energy-Scape Web-Based Application Is An Effective Tool To Overcome The Basic Knowledge Of Architects Toward Renewable Energy Properties, Rania Rushdy Moussa, Khaled M. Dewidar

Architectural Engineering

In last few years, research on renewables were shifted from integrating renewable energy (RE) with buildings into integrating renewable energy (RE) within urban environment due to the large occupies of urban areas in comparing to the building foot print. Urban areas such as urban landscape areas have a great potential in generating huge amount of energy that could satisfy the needs of urban neighbor-hoods. The presented research identify the properties of a new elements called Energy-scape elements (ESE) that integrates RE devices with urban landscape elements. This research focuses on analyzing the efficiency of web-based application called “Energy-scape software” (ESS) …

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Explicit Determinantal Formula For A Class Of Banded Matrices, Yerlan Amanbek, Zhibin Du, Yogi Erlangga, Carlos M. Da Fonseca, Bakytzhan Kurmanbek, António Pereira Jan 2020

Explicit Determinantal Formula For A Class Of Banded Matrices, Yerlan Amanbek, Zhibin Du, Yogi Erlangga, Carlos M. Da Fonseca, Bakytzhan Kurmanbek, António Pereira

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© 2020 Yerlan Amanbek et al., published by De Gruyter 2020. In this short note, we provide a brief proof for a recent determinantal formula involving a particular family of banded matrices.

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Business Analytics/Business Intelligence And It Infrastructure : Impact On Organizational Agility, Xiaofeng Chen, Keng Siau Jan 2020

Business Analytics/Business Intelligence And It Infrastructure : Impact On Organizational Agility, Xiaofeng Chen, Keng Siau

Research Collection School Of Computing and Information Systems

This is an empirical research investigating the impact of business analytics (BA) and business intelligence (BI) use, IT infrastructure flexibility, and their interactions on organizational agility. Synthesizing the systems theory and awareness-motivation-capability framework, the authors propose that BA-Use, IT infrastructure flexibility, and their interactions significantly influence organizational agility. The results show the significant association of BA use and IT infrastructure flexibility with organizational agility. The results also suggest that BA use may demand corporations to build a more flexible IT infrastructure. However, the data does not reveal the proposed interaction between the two drivers of organizational agility.

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Computer Aided Autism Diagnosis Using Diffusion Tensor Imaging, Yaser A. Elnakieb, Mohamed T. Ali, Ahmed Soliman, Ali H. Mahmoud, Ahmed M. Shalaby, Norah Saleh Alghamdi, Mohammed Ghazal, Ashraf Khalil, Andrew Switala, Robert S. Keynton, Gregory Neal Barnes, Ayman El-Baz Jan 2020

Computer Aided Autism Diagnosis Using Diffusion Tensor Imaging, Yaser A. Elnakieb, Mohamed T. Ali, Ahmed Soliman, Ali H. Mahmoud, Ahmed M. Shalaby, Norah Saleh Alghamdi, Mohammed Ghazal, Ashraf Khalil, Andrew Switala, Robert S. Keynton, Gregory Neal Barnes, Ayman El-Baz

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© 2013 IEEE. Autism Spectrum Disorder (ASD), commonly known as autism, is a lifelong developmental disorder associated with a broad range of symptoms including difficulties in social interaction, communication skills, and restricted and repetitive behaviors. In autism spectrum disorder, numerous studies suggest abnormal development of neural networks that manifest itself as abnormalities of brain shape, functionality, and/ or connectivity. The aim of this work is to present our automated computer aided diagnostic (CAD) system for accurate identification of autism spectrum disorder based on the connectivity of the white matter (WM) tracts. To achieve this goal, two levels of analysis are …

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Defining Digital Addiction: Key Features From The Literature, Mohamed Basel Almourad, John Mcalaney, Tiffany Skinner, Megan Pleva, Raian Ali Jan 2020

Defining Digital Addiction: Key Features From The Literature, Mohamed Basel Almourad, John Mcalaney, Tiffany Skinner, Megan Pleva, Raian Ali

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© 2020 by authors. Within recent years there has been increasing societal concern around the compulsive and excessive use of digital and Internet-enabled devices, such as the use of social media or online video gaming, and associated psychological and physical harms. However, problematic use or addictive behaviours are not yet included as diagnosable mental health issues in any major diagnostic system in Western countries and the conceptualisations of the phenomena are still inconsistent. To address this issue, the present study reviewed the current conceptualisations of digital addiction used within the research literature and identified common features of the definition of …

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Effective Assessment Of Workplace Problem-Solving In Higher Education, Maurice Danaher, Kevin Schoepp Jan 2020

Effective Assessment Of Workplace Problem-Solving In Higher Education, Maurice Danaher, Kevin Schoepp

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© 2020 Informing Science Institute. Aim/Purpose Within higher education, graduating students who are able to solve ill-structured, complex, open-ended, and collaborative, workplace problems is rec-ognized as paramount. Because of this, there is a need to assess this skill across the curriculum. Background This paper addresses this issue by assessing problem-solving across a computing curriculum using an assessment instrument shown to be reliable and valid. Methodology The method is based upon the implementation of the assessment instrument that uses a scenario-based asynchronous discussion board measuring the ability of student groups to solve workplace problems. The sample are computing stu-dents from the …

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Coupled Rain Streak And Background Estimation Via Separable Element-Wise Attention, Yinjie Tan, Qiang Wen, Jing Qin, Jianbo Jiao, Guoqiang Han, Shengfeng He Jan 2020

Coupled Rain Streak And Background Estimation Via Separable Element-Wise Attention, Yinjie Tan, Qiang Wen, Jing Qin, Jianbo Jiao, Guoqiang Han, Shengfeng He

Research Collection School Of Computing and Information Systems

Single image de-raining is challenging especially in the scenarios with dense rain streaks. Existing methods resolve this problem by predicting the rain streaks of the image, which constrains the network to focus on local rain streaks features. However, dense rain streaks are visually similar to mist or fog (with large intensities), in this case, the training objective should be shifted to image recovery instead of extracting rain streaks. In this paper, we propose a coupled rain streak and background estimation network that explores the intrinsic relations between two tasks. In particular, our network produces task-dependent feature maps, each part of …

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Machine Learning Techniques For Quantification Of Knee Segmentation From Mri, Sujeet More, Jimmy Singla, Ahed Abugabah, Ahmad Ali Alzubi Jan 2020

Machine Learning Techniques For Quantification Of Knee Segmentation From Mri, Sujeet More, Jimmy Singla, Ahed Abugabah, Ahmad Ali Alzubi

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© 2020 Sujeet More et al. Magnetic resonance imaging (MRI) is precise and efficient for interpreting the soft and hard tissues. Moreover, for the detailed diagnosis of varied diseases such as knee rheumatoid arthritis (RA), segmentation of the knee magnetic resonance image is a challenging and complex task that has been explored broadly. However, the accuracy and reproducibility of segmentation approaches may require prior extraction of tissues from MR images. The advances in computational methods for segmentation are reliant on several parameters such as the complexity of the tissue, quality, and acquisition process involved. This review paper focuses and briefly …

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Menopause-Specific Quality Of Life Among Emirati Women, Linda Smail, Ghufran Jassim, Anam Shakil Jan 2020

Menopause-Specific Quality Of Life Among Emirati Women, Linda Smail, Ghufran Jassim, Anam Shakil

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© 2019 by the authors. Licensee MDPI, Basel, Switzerland. To investigate the quality of life (QOL) of menopausal Emirati women aged 40–64 years and determine its relationship with their sociodemographic characteristics. A community-based cross-sectional study was conducted on 70 Emirati women using multistage stratified clustered random sampling. The participants were interviewed face-to-face using a structured questionnaire comprising sociodemographic variables, reproductive characteristics, and the Menopause-Specific Quality of Life (MENQOL) questionnaire. The most common symptom among the study participants was ‘aching in the muscles’. The participants had a moderate level of bothersome symptoms; in addition, vasomotor symptoms were reported by 61%, while …

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Ai Techniques For Covid-19, Adedoyin Ahmed Hussain, Ouns Bouachir, Fadi Al-Turjman, Moayad Aloqaily Jan 2020

Ai Techniques For Covid-19, Adedoyin Ahmed Hussain, Ouns Bouachir, Fadi Al-Turjman, Moayad Aloqaily

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© 2013 IEEE. Artificial Intelligence (AI) intent is to facilitate human limits. It is getting a standpoint on human administrations, filled by the growing availability of restorative clinical data and quick progression of insightful strategies. Motivated by the need to highlight the need for employing AI in battling the COVID-19 Crisis, this survey summarizes the current state of AI applications in clinical administrations while battling COVID-19. Furthermore, we highlight the application of Big Data while understanding this virus. We also overview various intelligence techniques and methods that can be applied to various types of medical information-based pandemic. We classify the …

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Been There, Done That: Quasi-Experimental Evidence About How, Why, And For Who, A Previous Visit Might Increase Stopover Destination Loyalty, Steven Pike, Filareti Kotsi, Frank Mathmann, Di Wang Jan 2020

Been There, Done That: Quasi-Experimental Evidence About How, Why, And For Who, A Previous Visit Might Increase Stopover Destination Loyalty, Steven Pike, Filareti Kotsi, Frank Mathmann, Di Wang

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© 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group. Despite stopovers being a part of long-haul air travel since commercial flights commenced over 80 years ago, the first published research on the phenomenon did not appear until 2016. Also, even though destination image has been the most researched construct in the destination marketing literature, no studies had measured perceptions of a destination in the context of a stopover until 2018. This study makes a contribution to this emerging research field by reporting how a quasi-experimental design found previous visitation enhances destination image and destination loyalty in …

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Neighbourhood Structure Preserving Cross-Modal Embedding For Video Hyperlinking, Yanbin Hao, Chong-Wah Ngo, Benoit Huet Jan 2020

Neighbourhood Structure Preserving Cross-Modal Embedding For Video Hyperlinking, Yanbin Hao, Chong-Wah Ngo, Benoit Huet

Research Collection School Of Computing and Information Systems

Video hyperlinking is a task aiming to enhance the accessibility of large archives, by establishing links between fragments of videos. The links model the aboutness between fragments for efficient traversal of video content. This paper addresses the problem of link construction from the perspective of cross-modal embedding. To this end, a generalized multi-modal auto-encoder is proposed.& x00A0;The encoder learns two embeddings from visual and speech modalities, respectively, whereas each of the embeddings performs self-modal and cross-modal translation of modalities. Furthermore, to preserve the neighbourhood structure of fragments, which is important for video hyperlinking, the auto-encoder is devised to model data …

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Performance Evaluation Of Data Dissemination Protocols For Connected Autonomous Vehicles, Fehda Malik Malik, Hasan Ali Khattak, Ahmad Almogren, Ouns Bouachir, Ikram Ud Din, Aymen Altameem Jan 2020

Performance Evaluation Of Data Dissemination Protocols For Connected Autonomous Vehicles, Fehda Malik Malik, Hasan Ali Khattak, Ahmad Almogren, Ouns Bouachir, Ikram Ud Din, Aymen Altameem

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© 2013 IEEE. An overwhelmed number of vehicles has wrecked the current system of transportation due to rapid growth in population. Smart cities are the novel innovation that is inevitable to curb the problems of traffic jams, unorganized traffic, environmental pollution, and slow response rate to emergency situations. The intelligent transportation system (ITS) is an integral part of smart cities allowing communications and interaction among vehicles. An autonomous vehicle is the key element of ITS and the mass implementation of this emerging technology is the solution to traffic problems linked to the current transportation system. Autonomous vehicles lead to the …

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Prevalence Of Overweight/Obesity, Anaemia And Their Associations Among Female University Students In Dubai, United Arab Emirates: A Cross-Sectional Study, Haleama Al Sabbah Jan 2020

Prevalence Of Overweight/Obesity, Anaemia And Their Associations Among Female University Students In Dubai, United Arab Emirates: A Cross-Sectional Study, Haleama Al Sabbah

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© The Author(s), 2020. Published by Cambridge University Press on behalf of The Nutrition Society. The present study assessed the associations of overweight, obesity and anaemia with selected lifestyle factors, total body fat and abdominal obesity among female university students in Dubai. A total of 251 female students from a national university in Dubai participated in the present study. Weight, height, waist circumference, Hb level and total body fat percentage were measured. Participants also completed a self-reported questionnaire that included items related to the factors of obesity, anaemia and lifestyle. The study was approved by the University Ethical Committee. Almost …

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Security Techniques For Intelligent Spam Sensing And Anomaly Detection In Online Social Platforms, Monther Aldwairi, Lo'ai Tawalbeh Jan 2020

Security Techniques For Intelligent Spam Sensing And Anomaly Detection In Online Social Platforms, Monther Aldwairi, Lo'ai Tawalbeh

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Copyright © 2020 Institute of Advanced Engineering and Science. All rights reserved. The recent advances in communication and mobile technologies made it easier to access and share information for most people worldwide. Among the most powerful information spreading platforms are the Online Social Networks (OSN)s that allow Internet-connected users to share different information such as instant messages, tweets, photos, and videos. Adding to that many governmental and private institutions use the OSNs such as Twitter for official announcements. Consequently, there is a tremendous need to provide the required level of security for OSN users. However, there are many challenges due …

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Systematic Classification Of Attackers Via Bounded Model Checking, Eric Rothstein-Morris, Jun Sun, Sudipta Chattopadyay Jan 2020

Systematic Classification Of Attackers Via Bounded Model Checking, Eric Rothstein-Morris, Jun Sun, Sudipta Chattopadyay

Research Collection School Of Computing and Information Systems

In this work, we study the problem of verification of systems in the presence of attackers using bounded model checking. Given a system and a set of security requirements, we present a methodology to generate and classify attackers, mapping them to the set of requirements that they can break. A naive approach suffers from the same shortcomings of any large model checking problem, i.e., memory shortage and exponential time. To cope with these shortcomings, we describe two sound heuristics based on cone-of-influence reduction and on learning, which we demonstrate empirically by applying our methodology to a set of hardware benchmark …

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A Survey Of Spatial Crowdsourcing, Yongxin Tong, Zimu Zhou, Yuxiang Zeng, Lei Chen, Cyrus Shahabi Jan 2020

A Survey Of Spatial Crowdsourcing, Yongxin Tong, Zimu Zhou, Yuxiang Zeng, Lei Chen, Cyrus Shahabi

Research Collection School Of Computing and Information Systems

Crowdsourcing is a computing paradigm where humans are actively involved in a computing task, especially for tasks that are intrinsically easier for humans than for computers. Spatial crowdsourcing (SC) is an increasing popular category of crowdsourcing in the era of mobile Internet and sharing economy, where tasks are spatiotemporal and must be completed at a specific location and time. In fact, spatial crowdsourcing has stimulated a series of recent industrial successes including sharing economy for urban services (Uber and Gigwalk) and spatiotemporal data collection (OpenStreetMap and Waze). This survey dives deep into the challenges and techniques brought by the unique …

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Scalable, Adaptable And Fast Estimation Of Transient Downtime In Virtual Infrastructures Using Convex Decomposition And Sample Path Randomization, Zhiling Guo, Jin Li, Ram Ramesh Jan 2020

Scalable, Adaptable And Fast Estimation Of Transient Downtime In Virtual Infrastructures Using Convex Decomposition And Sample Path Randomization, Zhiling Guo, Jin Li, Ram Ramesh

Research Collection School Of Computing and Information Systems

Network function virtualization enables efficient cloud-resource planning by virtualizing network services and applications into software running on commodity servers. A cloud-service provider needs to manage and ensure service availability of a network of concurrent virtualized network functions (VNFs). The downtime distribution of a network of VNFs can be estimated using sample-path randomization on the underlying birth–death process. An integrated modeling approach for this purpose is limited by its scalability and computational load because of the high dimensionality of the integrated birth–death process. We propose a generalized convex decomposition of the integrated birth-death process, which transforms the high-dimensional multi-VNF process into …

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