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Factors Influencing Employees on Compliance with Cybersecurity Policies and Their Implications for Protection of information and Technology Assets in Saudi Arabia

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Intelligent information Management 2023年第4期15卷 259-283页

作者： Sami Saad Alsemairi department of digital transformation and information programs Institute of Public Administration Jeddah Saudi Arabia

In the current digital era, it is difficult to preserve the confidentiality, integrity, and availability of an organization’s information and technology assets against cyber attacks. Organizations cannot rely solely on technical solutions for defense, since many cyber attacks attempt to exploit non-technical vulnerabilities such as how well employees comply with the organization’s cybersecurity policies. This study surveyed 245 randomly selected employees of government organizations in the Kingdom of Saudi Arabia with an electronically distributed questionnaire about factors that influence employees’ compliance with cybersecurity policies. The study found that ethical factors had the most influence on employee compliance with cybersecurity policies, followed in decreasing order of influence by legislative factors, technical factors, and administrative factors.

关键词： Cybersecurity Policies Compliance Protection information and Technology Assets

Robustness analysis of O-FDE algorithm for dispersion compensation in coherent fiber optical communications

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Optoelectronics Letters 2024年第5期20卷 289-293页

作者： ZHONG Kun ZENG Chenping DONG Jiaqiang WANG Baojiang LI Dan School of information Technology Xichang UniversityXichang 615013China Key Laboratory of Liangshan Agriculture digital transformation of Sichuan Provincial Education department Xichang615013China

The overlapping frequency domain equalization(O-FDE) in digital signal processing(DSP) is frequently employed to provide dispersion compensation in long-distance coherent fiber optical communications. However, the change in overlapping symbol length that occurs during the processing of the O-FDE algorithm will typically be influenced by the decision and zero filling of the last subblock, which is harmful to the robustness of the O-FDE algorithm. In this study, with a thorough robustness analysis on changing overlapping symbol length, we present a novel method for decision and zero filling of the last subblock and examine the correspondingly resulting error vector magnitude(EVM) and symbol error ratio(SER) under different values of optical signal-to-noise ratio(OSNR), chromatic dispersion, and overlapped symbol lengths.

关键词： fiber dispersion symbol

A novel image encryption scheme based on Keplers third law and random Hadamard transform

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Chinese Physics B 2017年第12期26卷 146-159页

作者：罗玉玲周戎龙刘俊秀丘森辉曹弋 Guangxi Key Laboratory of Multi-Source information Mining and Security Faculty of Electronic Engineering Guangxi Normal University Guilin 541004 China Guangxi Experiment Center of information Science Guilin 541004 China department of Business transformation and Sustainable Enterprise Surrey Business School University of Surrey Surrey GU2 7XH United Kingdom

In this paper, a novel image encryption scheme based on Keplers third law and random Hadamard transform is proposed to ensure the security of a digital image. First, a set of Kepler periodic sequences is generated to permutate image data, which is characteristic of the plain-image and the Keplers third law. Then, a random Hadamard matrix is constructed by combining the standard Hadamard matrix with the hyper-Chen chaotic system, which is used to further scramble the image coefficients when the image is transformed through random Hadamard transform. In the end, the permuted image presents interweaving diffusion based on two special matrices, which are constructed by Kepler periodic sequence and chaos system. The experimental results and performance analysis show that the proposed encrypted scheme is highly sensitive to the plain-image and external keys, and has a high security and speed, which are very suitable for secure real-time communication of image data.

关键词： Kepler's third law random Hadamard transform interweaving diffusion security

A new kernel method for hyperspectral image feature extraction

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Geo-Spatial information Science 2017年第4期20卷 309-318页

作者： Bin Zhao Lianru Gao Wenzhi Liao Bing Zhang Key Laboratory of digital Earth Science Institute of Remote Sensing and Digital Earth Chinese Academy of Sciences Beijing China University of Chinese Academy of Sciences Ringgold Standard Institution Beijing China department of Telecommunications and information Processing Ghent University Ghent Belgium

Hyperspectral image provides abundant spectral information for remote discrimination of subtle differences in ground ***,the increasing spectral dimensions,as well as the information redundancy,make the analysis and interpretation of hyperspectral images a *** extraction is a very important step for hyperspectral image *** extraction methods aim at reducing the dimension of data,while preserving as much information as ***,nonlinear feature extraction methods (*** minimum noise fraction (KMNF) transformation) have been reported to benefit many applications of hyperspectral remote sensing,due to their good preservation of high-order structures of the original ***,conventional KMNF or its extensions have some limitations on noise fraction estimation during the feature extraction,and this leads to poor performances for *** paper proposes a novel nonlinear feature extraction method for hyperspectral *** of estimating noise fraction by the nearest neighborhood information (within a sliding window),the proposed method explores the use of image *** approach benefits both noise fraction estimation and information preservation,and enables a significant improvement for *** results on two real hyperspectral images demonstrate the efficiency of the proposed *** to conventional KMNF,the improvements of the method on two hyperspectral image classification are 8 and 11％.This nonlinear feature extraction method can be also applied to other disciplines where high-dimensional data analysis is required.

关键词： Hyperspectral image dimensionality reduction feature extraction image segmentation kernel method

A survey of photon mapping state-of-the-art research and future challenges

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Frontiers of information Technology & Electronic Engineering 2016年第3期17卷 185-199页

作者： Chun-meng KANG Lu WANG Yan-ning XU Xiang-xu MENG department of Computer Science and Technology Shandong University Engineering Research Center of digital Media Technology Ministry of Education

Global illumination is the core part of photo-realistic rendering. The photon mapping algorithm is an effective method for computing global illumination with its obvious advantage of caustic and color bleeding rendering. It is an active research field that has been developed over the past two decades. The deficiency of precise details and efficient rendering are still the main challenges of photon mapping. This report reviews recent work and classifies it into a set of categories including radiance estimation, photon relaxation, photon tracing, progressive photon mapping, and parallel methods. The goals of our report are giving readers an overall introduction to photon mapping and motivating further research to address the limitations of existing methods.

关键词： Global illumination Photon mapping Radiance estimation Photon relaxation Progressive photon mapping

Scientific Elegance in NIDS: Unveiling Cardinality Reduction, Box-Cox transformation, and ADASYN for Enhanced Intrusion Detection

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Computers, Materials & Continua 2024年第6期79卷 3897-3912页

作者： Amerah Alabrah department of information Systems College of Computer and information Sciences King Saud UniversityRiyadh11451Saudi Arabia

The emergence of digital networks and the wide adoption of information on internet platforms have given rise to threats against users’private *** intruders actively seek such private data either for sale or other inappropriate ***,national and international organizations have country-level and company-level private information that could be accessed by different network ***,the need for a Network Intruder Detection System(NIDS)becomes essential for protecting these networks and *** the evolution of NIDS,Artificial Intelligence(AI)assisted tools and methods have been widely adopted to provide effective ***,the development of NIDS still faces challenges at the dataset and machine learning levels,such as large deviations in numeric features,the presence of numerous irrelevant categorical features resulting in reduced cardinality,and class imbalance in multiclass-level *** address these challenges and offer a unified solution to NIDS development,this study proposes a novel framework that preprocesses datasets and applies a box-cox transformation to linearly transform the numeric features and bring them into closer *** reduction was applied to categorical features through the binning ***,the class imbalance dataset was addressed using the adaptive synthetic sampling data generation ***,the preprocessed,refined,and oversampled feature set was divided into training and test sets with an 80–20 ratio,and two experiments were *** Experiment 1,the binary classification was executed using four machine learning classifiers,with the extra trees classifier achieving the highest accuracy of 97.23%and an AUC of *** Experiment 2,multiclass classification was performed,and the extra trees classifier emerged as the most effective,achieving an accuracy of 81.27%and an AUC of *** results were evaluated based on training,testing,and total time,and a com

关键词： Adaptive synthetic sampling class imbalance features cardinality network security over sampling

A cyberGIS-enabled multi-criteria spatial decision support system: A case study on flood emergency management

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International Journal of digital Earth 2019年第11期12卷 1364-1381页

作者： Zhe Zhang Hao Hu Dandong Yin Shakil Kashem Ruopu Li Heng Cai Dylan Perkins Shaowen Wang Cyber Infrastructure and Geospatial information Laboratory department of Geography and Geographic information Science University of IllinoisUrbana-ChampaignILUSA CyberGIS Center for Advanced digital and Spatial Studies University of IllinoisUrbana-ChampaignILUSA department of Geography and Geographic information Science University of IllinoisUrbana-ChampaignILUSA department of Geography and Environmental Resources Southern Illinois UniversityCarbondaleILUSA department of Environmental Sciences Louisiana State UniversityBaton RougeLAUSA Advanced Research Computing Center University of WyomingLaramieWYUSA

With the increased frequency of natural hazards and disasters and consequent losses,it is imperative to develop efficient and timely strategies for emergency response and relief *** this paper,we propose a cyberGIS-enabled multi-criteria spatial decision support system for supporting rapid decision making during emergency *** combines a high-performance computing environment(cyberGIS-Jupyter)and multi-criteria decision analysis models(Weighted Sum Model(WSM)and Technique for Order Preference by Similarity to Ideal Solution Model(TOPSIS))with various types of social vulnerability indicators to solve decision problems that contain conflicting evaluation criteria in a flood emergency *** media data(*** data)was used as an additional tool to support the decision-making *** case study involves two decision goals generated based on a past flood event in the city of Austin,Texas,*** our result shows,WSM produces more diverse values and higher output category estimations than the TOPSIS ***,the model was validated using an innovative *** cyberGIS-enabled spatial decision support system allows collaborative problem solving and efficient knowledge transformation between decision makers,where different emergency responders can formulate their decision objectives,select relevant evaluation criteria,and perform interactive weighting and sensitivity analyses.

关键词： Multi-criteria spatial decision support systems social media data(Twitter) disaster management big data and cyberGIS

A Usability Management Framework for Securing Healthcare information System

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Computer Systems Science & Engineering 2022年第9期42卷 1015-1030页

作者： Hosam Alhakami Abdullah Baz Wajdi Alhakami Abhishek Kumar Pandey Alka Agrawal Raees Ahmad Khan department of Computer Science College of Computer and Information SystemsUmm Al-Qura UniversityMakkah21955Saudi Arabia department of Computer Engineering College of Computer and Information SystemsUmm Al-Qura UniversityMakkah21955Saudi Arabia department of information Technology College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia department of information Technology Babasaheb Bhimrao Ambedkar UniversityLucknow226025India

transformation from conventional business management systems tosmart digital systems is a recurrent trend in the current era. This has led to digitalrevolution, and in this context, the hardwired technologies in the software industry play a significant role However, from the beginning, software security remainsa serious issue for all levels of stakeholders. Software vulnerabilities lead to intrusions that cause data breaches and result in disclosure of sensitive data, compromising the organizations’ reputation that translates into, financial losses andcompromising software usability as well. Most of the data breaches are financiallymotivated, especially in the healthcare sector. The cyber invaders continuouslypenetrate the E- Health data because of the high cost of the data on the darkweb. Therefore, security assessment of healthcare web-based applicationsdemands immediate intervention mechanisms to weed out the threats of cyberattacks for the sake of software usability. The proposed disclosure is a unique process of three phases that are combined by researchers in order to produce andmanage usability management framework for healthcare information system. Inthis most threatened time of digital era where, Healthcare data industry has bornethe brunt of the highest number of data breach episodes in the last few years. Thekey reason for this is attributed to the sensitivity of healthcare data and the highcosts entailed in trading the data over the dark web. Hence, usability managementof healthcare information systems is the need of hour as to identify the vulnerabilities and provide preventive measures as a shield against the breaches. The proposed unique developed model of usability management workflow is preparedby associating steps like learn;analyze and manage. All these steps gives an allin one package for the healthcare information management industry because thereis no systematic model available which associate identification to implementationsteps with d

关键词： Smart healthcare healthcare industry usability security

Aerodynamic design optimization of helicopter rotor blades including airfoil shape for hover performance

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Chinese Journal of Aeronautics 2013年第1期26卷 1-8页

作者： Ngoc Anh Vu Jae Woo Lee Jung Il Shu department of Aerospace Engineering Ho Chi Minh City University of Technology department of Aerospace information Engineering Konkuk University

This study proposes a process to obtain an optimal helicopter rotor blade shape for aerodynamic performance in hover flight. A new geometry representation algorithm which uses the class function/shape function transformation （CST） is employed to generate airfoil coordinates. With this approach, airfoil shape is considered in terms of design variables. The optimization process is constructed by integrating several programs developed by author. The design variables include twist, taper ratio, point of taper initiation, blade root chord, and coefficients of the airfoil distribution function. Aerodynamic constraints consist of limits on power available in hover and forward flight. The trim condition must be attainable. This paper considers rotor blade configuration for the hover flight condition only, so that the required power in hover is chosen as the objective function of the optimization problem. Sensitivity analysis of each design variable shows that airfoil shape has an important role in rotor performance. The optimum rotor blade reduces the required hover power by 7.4% and increases the figure of merit by 6.5%, which is a good improvement for rotor blade design.

关键词： Airfoil Design optimization Helicopter design Hover performance Planforms Rotor blades design