The State of the Art and Future Prospective of the Network Security

Author(s):  
Alaa Hussein Al-Hamami

The continuous deployment of network services over the wide range of public and private networks has led to transactions and services that include personal, and sometimes quite sensitive, data. Examples of services include: pay-per-view, cable telephony, bill payments by phone, credit card charging, and Internet banking. Such services require significant effort not only to protect the sensitive data involved in the transactions and services but to ensure integrity and availability of network services as well. The requirement for employing heterogeneous networks and systems becomes increasingly important, and as the view of traditional distributed systems has changed to a network centric view in all types of application networks, therefore, the complexity of these systems has led to significant security flaws and problems. Existing conventional approaches for security service development over such complex and most often heterogeneous networks and systems are not satisfying and cannot meet users and applications needs; therefore, several approaches have been developed to provide security at various levels and degrees, such as: secure protocols, secure protocol mechanisms, secure services, firewalls, Intrusion Detection Systems (IDS), and later Intrusion Prevention System (IPS), etc. This chapter considers and addresses several aspects of network security in an effort to provide a publication that summarizes the current status and the promising and interesting future directions and challenges. The authors try to present the state-of-the-art in this chapter for the following topics: Internet security, secure services, security in mobile systems and trust, anonymity, and privacy.

Author(s):  
Dennis M. Bushnell ◽  
Siva Thangam

An overview of current issues in turbulence modeling is presented along with a brief description of the current and future needs of NASA, especially from the point of advancing the state-of-the-art in aircraft design and air transportation.


2022 ◽  
Author(s):  
Paula Delgado-Santos ◽  
Giuseppe Stragapede ◽  
Ruben Tolosana ◽  
Richard Guest ◽  
Farzin Deravi ◽  
...  

The number of mobile devices, such as smartphones and smartwatches, is relentlessly increasing to almost 6.8 billion by 2022, and along with it, the amount of personal and sensitive data captured by them. This survey overviews the state of the art of what personal and sensitive user attributes can be extracted from mobile device sensors, emphasising critical aspects such as demographics, health and body features, activity and behaviour recognition, etc. In addition, we review popular metrics in the literature to quantify the degree of privacy, and discuss powerful privacy methods to protect the sensitive data while preserving data utility for analysis. Finally, open research questions are presented for further advancements in the field.


Informatics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 59
Author(s):  
Alexander Chowdhury ◽  
Jacob Rosenthal ◽  
Jonathan Waring ◽  
Renato Umeton

Machine learning has become an increasingly ubiquitous technology, as big data continues to inform and influence everyday life and decision-making. Currently, in medicine and healthcare, as well as in most other industries, the two most prevalent machine learning paradigms are supervised learning and transfer learning. Both practices rely on large-scale, manually annotated datasets to train increasingly complex models. However, the requirement of data to be manually labeled leaves an excess of unused, unlabeled data available in both public and private data repositories. Self-supervised learning (SSL) is a growing area of machine learning that can take advantage of unlabeled data. Contrary to other machine learning paradigms, SSL algorithms create artificial supervisory signals from unlabeled data and pretrain algorithms on these signals. The aim of this review is two-fold: firstly, we provide a formal definition of SSL, divide SSL algorithms into their four unique subsets, and review the state of the art published in each of those subsets between the years of 2014 and 2020. Second, this work surveys recent SSL algorithms published in healthcare, in order to provide medical experts with a clearer picture of how they can integrate SSL into their research, with the objective of leveraging unlabeled data.


2016 ◽  
Vol 26 (3) ◽  
pp. 407-423
Author(s):  
Alessandra Decataldo ◽  
Elisabetta Ruspini

2018 ◽  
pp. 1671-1704
Author(s):  
Shareeful Islam ◽  
Stefan Fenz ◽  
Edgar Weippl ◽  
Christos Kalloniatis

Organizations are now seriously considering adopting cloud into the existing business context, but migrating data, application and services into cloud doesn't come without substantial risks. These risks are the significant barriers for the wider cloud adoption. There are works that consolidate the existing work on cloud migration and technology. However, there is no secondary study that consolidates the state of the art research and existing practice on risk management in cloud computing. It makes difficult to understand the risks management trend, maturity, and research gaps. This paper investigates the state of the art research and practices relating to risk management in cloud computing and discusses survey results on migration goals and risks. The survey participants are practitioners from both public and private organizations of two different locations, i.e., UK and Malaysia. The authors identify and classify the relevant literature and systematically compare the existing works and survey results. The results show that most of the existing works do not consider the existing organization and business context for the risk assessment. The authors' study results also reveal that risk management in cloud computing research and practice is still not in a mature stage but gradually advancing. Finally, they propose a risk assessment approach and determine the relative importance of the migration goals from two real migration use cases.


2010 ◽  
Vol 82 (3) ◽  
pp. iv
Author(s):  
Enrique Aguilar ◽  
Carlos Valdés

The 9th International Conference on Heteroatom Chemistry (ICHAC-9) was held in the Auditorio Príncipe Felipe of Oviedo, Spain, from 30 June to 4 July 2009. The conference was chaired by Prof. José Barluenga (University of Oviedo, Spain) and attracted about 210 participants, mainly organic and inorganic chemists, from 30 countries all around the world. The scientific program consisted of 9 plenary lectures, 21 invited lectures, 48 short communications, and 68 posters.This conference explored the state of the art of heteroatom chemistry and focused on the following major themes:- heteroatom ligands in catalysis- heteroatoms in organic (non-metal) catalysis- heteroatoms in medicine- heteroatom polymers and materials- heteroatom bonding and synthesisBesides the collection of 16 papers (based on plenary and invited lectures with the choice of oral contributions) included in this issue of Pure and Applied Chemistry, the ICHAC-9 Book of Abstracts remains available online and can be free downloaded from <http://www.uniovi.es/ichac9/> in pdf format.ICHAC will return to its origins for its 10th meeeting, and, therefore, ICHAC-10 will be held in Kyoto (Japan) in 2011 and will be hosted by Prof. Norihiro Tokitoh of Kyoto University. It is confidently expected that the conference will continue to fulfill its important scientific role in highlighting ongoing advances in heteroatom chemistry.The organizers are grateful to all who contributed to a successful scientific program, especially to the speakers and to our public and private sponsors: Ministerio de Ciencia e Innovación (Spain), Consejería de Educación y Ciencia del Principado de Asturias (by Plan de Ciencia, Tecnología e Innovación-PCTI Asturias), Ayuntamiento de Oviedo, Universidad de Oviedo, Fundación Universidad de Oviedo, Lilly, Bruker and Scharlab and the Organic Division of the Spanish Royal Society of Chemistry (Grupo Especializado en Química Orgánica de la RSEQ). Finally, in particular, we would like to thank all contributors to this issue for their timely efforts and the editorial staff for their help.Enrique Aguilar and Carlos ValdésConference Editors


2008 ◽  
Vol 13 (1) ◽  
pp. 64-78 ◽  
Author(s):  
Moshe Zeidner ◽  
Richard D. Roberts ◽  
Gerald Matthews

Almost from its inception, the emotional intelligence (EI) construct has been an elusive one. After nearly 2 decades of research, there still appears to be little consensus over how EI should be conceptualized or assessed and the efficacy of practical applications in real life settings. This paper aims at providing a snapshot of the state-of-the-art in research involving this newly minted construct. Specifically, in separate sections of this article, we set out to distinguish what is known from what is unknown in relation to three paramount concerns of EI research, i.e., conceptualization, assessment, and applications. In each section, we start by discussing assertions that may be made with some degree of confidence, elucidating what are essentially sources of consensus concerning EI. We move then to discuss sources of controversy; those things for which there is less agreement among EI researchers. We hope that this “straight talk” about the current status of EI research will provide a platform for new research in both basic and applied domains.


2018 ◽  
pp. 419-451
Author(s):  
Shareeful Islam ◽  
Stefan Fenz ◽  
Edgar Weippl ◽  
Christos Kalloniatis

Organizations are now seriously considering adopting cloud into the existing business context, but migrating data, application and services into cloud doesn't come without substantial risks. These risks are the significant barriers for the wider cloud adoption. There are works that consolidate the existing work on cloud migration and technology. However, there is no secondary study that consolidates the state of the art research and existing practice on risk management in cloud computing. It makes difficult to understand the risks management trend, maturity, and research gaps. This paper investigates the state of the art research and practices relating to risk management in cloud computing and discusses survey results on migration goals and risks. The survey participants are practitioners from both public and private organizations of two different locations, i.e., UK and Malaysia. The authors identify and classify the relevant literature and systematically compare the existing works and survey results. The results show that most of the existing works do not consider the existing organization and business context for the risk assessment. The authors' study results also reveal that risk management in cloud computing research and practice is still not in a mature stage but gradually advancing. Finally, they propose a risk assessment approach and determine the relative importance of the migration goals from two real migration use cases.


2021 ◽  
Author(s):  
Scott Campbell ◽  
Ricardo Bueno ◽  
Sinasi Eren ◽  
Malik Faisal Abdullah

Abstract Drilling though salt is not a new challenge in the petroleum industry, with successful exploration and appraisal wells in salt environments paving the way for complex field developments. A detailed summary of how these advancements have subsequently evolved into the technology and methods being used today is presented. The numerous challenges, and the resulting solutions, of drilling in salt environments are well documented; a comprehensive review of the relevant published industry literature has been conducted. Additionally, workshops with several major service vendors have been held to ascertain the current status of research and new product development. These two areas form the foundation of this work and have been weaved together and presented to establish what is the state of the art in salt drilling. Since the first salt wells were drilled, the drilling industry has changed considerably. Significant advancements in salt drilling technologies and methods have been made in areas such as: best drilling practices, salt formation geomechanics, salt formation geochemistry, drilling fluids, well cementing, directional drilling, drill string and drill bit design. These advancements have all been clearly delineated in a chronology of continuous improvement, compounded by the considerable weight of industry experience and lessons learned which has in turn led to optimisation, and increased efficiency, of salt drilling operations. Today, salt drilling is prevalent in areas such as the Gulf of Mexico, deep-water offshore Brazil, and deep-water West Africa, where the boundaries are continually pushed due to the perseverance of both petroleum operating companies and service vendors. The existing body of literature on salt wells is large and covers many disciplines of the upstream business, from wildcat exploration through to production. However, this focus is solely on drilling, combining and summarising many years’ worth of experience, learning, research, and development, to present what is the state of the art in salt drilling.


2015 ◽  
Vol 1 (3) ◽  
pp. 41
Author(s):  
Elena Seghezzia ◽  
Gabriele Masera

ResumenEl objetivo principal de este paper es ofrecer una reseña del utilizo de sistemas de paneles prefabricados en el retrofit de edificios. El retrofit representa un punto focal de la eficiencia energética, considerando el gran numero de edificios existentes, privados y públicos, en Europa. La necesidad de intervención en este ámbito es enfatizada por las Directivas Europeas, y por la roadmap de Horizon 2020. Varias investigaciones y proyectos se centran en el tema de la prefabricación en el retrofit, enfatizando la importancia de esta estrategia. La reseña de el estado del arte muestra los diferentes enfoques de los paneles prefabricados: una clasificación critica de estos proyectos diferencia entre sistemas basados en grandes o pequeños paneles, sistemas de ampliación basados en paneles estructurales y sistemas parcialmente prefabricados. Esta clasificación es útil porque consiente posibles progresos en este campo, enfatizando los adventajas y desventajas de cada sistema. Los asuntos mas importantes son los de diseño, fabricación, transporte y instalación. Una reseña de estos asuntos es también provista, enfatizando los campos de innovación, y los posibles futuros desarrollos de la prefabricación en el retrofit de las construcciones. AbstractThe main aim of this paper is to provide an overview of the use of prefabricated panels in external building retrofitting. Building retrofit represents a pivotal point in terms of energy efficiency, connected to the great amount of existing buildings, both public and private, all around Europe. The need of intervention is underlined by different European Directives, as well as by Horizon 2020 roadmap. Many research works and projects are focusing on the theme of prefabrication in retrofit, stressing the importance of this strategy. The review of the state of the art shows several approaches in terms of prefabricated panels: a critical classification of these projects distinguish between systems based on large and small panels, systems for extensions based on structural panels, and partially prefabricated systems. The classification is useful as it can help in understanding further development of prefabricated panels, underlining the advantages and disadvantages of the systems. The main challenges are linked to design, fabrication, transport and installation. An overview of those issues is also provided, stressing the main innovation fields to be further investigated, and the possible future developments of prefabrication in building retrofit.


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