scholarly journals How to Evaluate the Security and Performance of an Image Encryption System

2020 ◽  
pp. 302-311
Author(s):  
Ratheesh Kumar R ◽  
Jabin Mathew
Keyword(s):  
Image Encryption ◽  
Evaluation Criteria ◽  
Information Loss ◽  
Security Attacks ◽  
And Performance ◽  
Almost All ◽  
Technical People ◽  
Insight Into

Almost all technical people know about images and image encryption, but some of them are not aware of the security and performance of the encryption systems. All image encryption systems are capable of encrypting the images, but some are not so secure. However, the question is how to evaluate the encryption systems. This paper gives you what are the analyses that are possible for evaluating the security and performance of the encryption systems. We hope this paper gives you an insight into Images, Image encryption, Security attacks, Noise and information loss, Evaluation Criteria, Analysis, Resistance, Key, Speed, Complexity, and other parameters.

scholarly journals Green Supplier Evaluation and Selections: A State-of-the-Art Literature Review of Models, Methods, and Applications

2020 ◽  
Vol 2020 ◽  
pp. 1-25
Author(s):  
Li-Jun Zhang ◽  
Ran Liu ◽  
Hu-Chen Liu ◽  
Hua Shi
Keyword(s):  
State Of The Art ◽  
Evaluation Criteria ◽  
Supplier Evaluation ◽  
Journal Articles ◽  
Public Consciousness ◽  
And Performance ◽  
Green Suppliers ◽  
The Right ◽  
Insight Into

The role of green supplier evaluation and selection (GSES) in supply chain management is increasingly appreciated due to the intensification of competition, raising public consciousness, and environmental issues. To improve GSES, a large number of approaches have been proposed in the past decades. However, few attempts have been made to systematically review and classify the literature in this field. The objective of this study is to afford a comprehensive review of the studies which aim to develop models and methods in helping enterprises to assess and select the right green suppliers. To achieve this goal, a total of 193 journal articles extracted from the Scopus database over the period of 2009 to 2020 were chosen and reviewed. These publications were classified into ten categories based on their adopted GSES models and analyzed concerning the evaluation criteria, criteria weighting methods, and performance evaluation methods. Moreover, a bibliometric analysis was conducted according to the frequency of supplier selection methods, citation number, publication year, journal, country, and application area. This study supports practitioners, managers, and researchers in effectively recognizing and applying the GSES models to enhance organizational competitiveness and provides an insight into its state of the art.

An insight into the effect of calcination conditions on catalytic cracking of toluene over 3Fe8Ni/palygorskite: Catalysts characterization and performance

Fuel ◽  
2017 ◽  
Vol 190 ◽  
pp. 47-57 ◽  
Author(s):  
Xuehua Zou ◽  
Tianhu Chen ◽  
Haibo Liu ◽  
Ping Zhang ◽  
Zhiyuan Ma ◽  
...  
Keyword(s):  
Catalytic Cracking ◽  
And Performance ◽  
Insight Into

Boards and governance of state-owned enterprises

2014 ◽  
Vol 14 (2) ◽  
pp. 238-251 ◽  
Author(s):  
Samuel Nana Yaw Simpson
Keyword(s):  
Corporate Governance ◽  
Public Sector ◽  
Boards Of Directors ◽  
Evaluation Criteria ◽  
Executive Directors ◽  
Middle Income ◽  
Content Type ◽  
And Performance ◽  
Legal Frameworks ◽  
State Enterprises

Purpose – This study aims to examine the structure, attributes, and performance of boards of directors of state-owned enterprises (SOEs) within the broader context of public sector governance. This is informed by the less attention given to the concept among public sector organizations despite efforts to make state enterprises more effective and efficient, especially in developing and middle income countries. Design/methodology/approach – Data was collected through questionnaires self-administered in 2010 to all 25 SOEs in Accra, Ghana, out of the 29 nationwide. Some key officials were interviewed and documentary evidence analyzed to achieve triangulation of data and results. Findings – Results show that state-owned enterprises have boards and comply with the minimal governance issues outlined the legal frameworks establishing them. However, they exhibit significant weaknesses in the areas of board performance evaluation, criteria for board appointment, the balance of executive directors and non-executive directors, and other board characteristics, indicating a departure from general practices. Practical implications – Findings suggest the need for a tailored corporate governance framework or code for state-owned enterprises in developing countries. Originality/value – Compared to the literature, this study provides insight on boards from the perspective of state enterprises in ensuring good corporate governance, particularly in the context of a middle income country (Ghana).

Key Factors for Green IS Acceptance in Banking Segment

2021 ◽  
Vol 17 (1) ◽  
pp. 48-67
Author(s):  
Monika Singh ◽  
Ganesh P. Sahu
Keyword(s):  
Literature Review ◽  
Structural Equation ◽  
Harmful Effect ◽  
Uttar Pradesh ◽  
Equation Modeling ◽  
Key Factors ◽  
Green Is ◽  
And Performance ◽  
Green Information Systems ◽  
Almost All

Almost all service organizations are now well aware about global warming and advantages of green information systems (Green IS) in order to gain social and economic profit at the cost of no harmful effect on environment. Recurrent annotations in the literature have explored that for successful Green IS adoption certain keys factors are required to be considered and followed in various organizations. This paper reviews, analyzes, and corroborates 11 key factors empirically that are accountable for successful adoption of Green IS and performance improvement achievement of banking segments with special reference to the banks positioned at Lucknow, Uttar Pradesh, India. Eleven key factors are identified via in-depth literature review and examined using UTAUT2 and T-O-E models. Analysis of Moment Structure 21.0-Structural Equation Modeling tool is used in the study for data analysis and corroboration. The study will enrich the literature review in this field; also, it will be helpful to the decision makers and practitioners in different segments for successful adoption of Green IS in organizations.

Peak Signal-to-Noise Ratio Evaluation of Server Display Monitors and Client Display Monitors in a Digital Subtraction Angiography Devices

2020 ◽  
Vol 3 (1) ◽  
pp. 33-41
Author(s):  
Hwunjae Lee ◽  
◽  
Junhaeng Lee ◽  
Keyword(s):  
Signal To Noise Ratio ◽  
Information Loss ◽  
The Other ◽  
Digital Subtraction ◽  
Signal Distortion ◽  
Signal To Noise ◽  
Image Storage ◽  
And Performance ◽  
Pacs Server ◽  
Display Monitor

This study evaluated PSNR of server display monitor and client display monitor of DSA system. The signal is acquired and imaged during the surgery and stored in the PACS server. After that, distortion of the original signal is an important problem in the process of observation on the client monitor. There are many problems such as noise generated during compression and image storage/transmission in PACS, information loss during image storage and transmission, and deterioration in image quality when outputting medical images from a monitor. The equipment used for the experiment in this study was P's DSA. We used two types of monitors in our experiment, one is P’s company resolution 1280×1024 pixel monitor, and the other is W’s company resolution 1536×2048 pixel monitor. The PACS Program used MARO-view, and for the experiment, a PSNR measurement program using Visual C++ was implemented and used for the experiment. As a result of the experiment, the PSNR value of the kidney angiography image was 26.958dB, the PSNR value of the lung angiography image was 28.9174 dB, the PSNR value of the heart angiography image was 22.8315dB, and the PSNR value of the neck angiography image was 37.0319 dB, and the knee blood vessels image showed a PSNR value of 43.2052 dB, respectively. In conclusion, it can be seen that there is almost no signal distortion in the process of acquiring, storing, and transmitting images in PACS. However, it suggests that the image signal may be distorted depending on the resolution and performance of each monitor. Therefore, it will be necessary to evaluate the performance of the monitor and to maintain the performance.

scholarly journals Comprehensive Comparative Genomics and Phenotyping of Methylobacterium Species

2021 ◽  
Vol 12 ◽  
Author(s):  
Ola Alessa ◽  
Yoshitoshi Ogura ◽  
Yoshiko Fujitani ◽  
Hideto Takami ◽  
Tetsuya Hayashi ◽  
...  
Keyword(s):  
Comparative Genomics ◽  
Phylogenetic Relationship ◽  
Distinct Species ◽  
Genotypic Differences ◽  
Clade C ◽  
Single Genus ◽  
Almost All ◽  
Type Strains ◽  
Dependent Pathway ◽  
Insight Into

The pink-pigmented facultative methylotrophs (PPFMs), a major bacterial group found in the plant phyllosphere, comprise two genera: Methylobacterium and Methylorubrum. They have been separated into three major clades: A, B (Methylorubrum), and C. Within these genera, however, some species lack either pigmentation or methylotrophy, which raises the question of what actually defines the PPFMs. The present study employed a comprehensive comparative genomics approach to reveal the phylogenetic relationship among the PPFMs and to explain the genotypic differences that confer their different phenotypes. We newly sequenced the genomes of 29 relevant-type strains to complete a dataset for almost all validly published species in the genera. Through comparative analysis, we revealed that methylotrophy, nitrate utilization, and anoxygenic photosynthesis are hallmarks differentiating the PPFMs from the other Methylobacteriaceae. The Methylobacterium species in clade A, including the type species Methylobacterium organophilum, were phylogenetically classified into six subclades, each possessing relatively high genomic homology and shared phenotypic characteristics. One of these subclades is phylogenetically close to Methylorubrum species; this finding led us to reunite the two genera into a single genus Methylobacterium. Clade C, meanwhile, is composed of phylogenetically distinct species that share relatively higher percent G+C content and larger genome sizes, including larger numbers of secondary metabolite clusters. Most species of clade C and some of clade A have the glutathione-dependent pathway for formaldehyde oxidation in addition to the H4MPT pathway. Some species cannot utilize methanol due to their lack of MxaF-type methanol dehydrogenase (MDH), but most harbor an XoxF-type MDH that enables growth on methanol in the presence of lanthanum. The genomes of PPFMs encode between two and seven (average 3.7) genes for pyrroloquinoline quinone-dependent alcohol dehydrogenases, and their phylogeny is distinctly correlated with their genomic phylogeny. All PPFMs were capable of synthesizing auxin and did not induce any immune response in rice cells. Other phenotypes including sugar utilization, antibiotic resistance, and antifungal activity correlated with their phylogenetic relationship. This study provides the first inclusive genotypic insight into the phylogeny and phenotypes of PPFMs.

scholarly journals Elucidation and refinement of synthetic receptor mechanisms

2020 ◽  
Author(s):  
Hailey I. Edelstein ◽  
Patrick S. Donahue ◽  
Joseph J. Muldoon ◽  
Anthony K. Kang ◽  
Taylor B. Dolberg ◽  
...  
Keyword(s):  
Transmembrane Domain ◽  
Functional Performance ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Performance Characteristics ◽  
Therapeutic Gene ◽  
High Performing ◽  
Synthetic Receptor ◽  
And Performance ◽  
Insight Into

ABSTRACTSynthetic receptors are powerful tools for engineering mammalian cell-based devices. These biosensors enable cell-based therapies to perform complex tasks such as regulating therapeutic gene expression in response to sensing physiological cues. Although multiple synthetic receptor systems now exist, many aspects of receptor performance are poorly understood. In general, it would be useful to understand how receptor design choices influence performance characteristics. In this study, we examined the modular extracellular sensor architecture (MESA) and systematically evaluated previously unexamined design choices, yielding substantially improved receptors. A key finding that might extend to other receptor systems is that the choice of transmembrane domain (TMD) is important for generating high-performing receptors. To provide mechanistic insights, we adopted and employed a Förster resonance energy transfer (FRET)-based assay to elucidate how TMDs affect receptor complex formation and connected these observations to functional performance. To build further insight into these phenomena, we developed a library of new MESA receptors that sense an expanded set of ligands. Based upon these explorations, we conclude that TMDs affect signaling primarily by modulating intracellular domain geometry. Finally, to guide the design of future receptors, we propose general principles for linking design choices to biophysical mechanisms and performance characteristics.

scholarly journals Therapeutic Exosomes in Prognosis and Developments of Coronary Artery Disease

2021 ◽  
Vol 8 ◽  
Author(s):  
Ai-Qun Chen ◽  
Xiao-Fei Gao ◽  
Zhi-Mei Wang ◽  
Feng Wang ◽  
Shuai Luo ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Cell Types ◽  
Biological Functions ◽  
Stent Restenosis ◽  
Artery Disease ◽  
Almost All ◽  
Different Cell Types ◽  
Insight Into ◽  
Systematic Knowledge

Exosomes, with an diameter of 30~150 nm, could be released from almost all types of cells, which contain diverse effective constituent, such as RNAs, proteins, lipids, and so on. In recent years, exosomes have been verified to play an important role in mechanism, diagnosis, treatment, and prognosis of cardiovascular disease, especially coronary artery disease (CAD). Moreover, it has also been shown that exosomes derived from different cell types have various biological functions based on the cell stimulation and microenvironment. However, therapeutic exosomes are currently far away from clinical translation, despite it is full of hope. In this review, we summarize an update of the recent studies and systematic knowledge of therapeutic exosomes in atherosclerosis, myocardial infarction, and in-stent restenosis, which might provide a novel insight into the treatment of CAD and promote the potential clinical application of therapeutic exosomes.

The Oxford Handbook of Time in Music

2021 ◽  
Keyword(s):  
Cultural Studies ◽  
Music Theory ◽  
Musical Work ◽  
Musical Practice ◽  
Musical Time ◽  
Music Making ◽  
Nature Of Time ◽  
And Performance ◽  
Insight Into ◽  
Profound Insight

As the art that calls most attention to temporality, music provides us with profound insight into the nature of time, and time equally offers us one of the richest lenses through which to interrogate musical practice and thought. In this volume, musical time, arrayed across a spectrum of genres and performance/compositional contexts is explored from a multiplicity of perspectives. The contributions to the volume all register the centrality of time to our understanding of music and music-making and offer perspectives on time in music, particularly though not exclusively attending to contemporary forms of musical work. In sharing insights drawn from philosophy, music theory, ethnomusicology, psychology of performance and cultural studies, the book articulates a range of understandings on the metrics, politics and socialities woven into musical time.

Technology-Enhanced Learning Standard through Integration of Modeling and Simulation into Engineering Study Programs

2012 ◽  
pp. 157-177
Author(s):  
Dietmar P. F. Moeller ◽  
Hamid Vakilzadian
Keyword(s):  
Modeling And Simulation ◽  
Electrical Engineering ◽  
Technology Enhanced Learning ◽  
Engineering System ◽  
Engineering Study ◽  
Study Programs ◽  
And Performance ◽  
University Of Nebraska Lincoln ◽  
Enhanced Learning ◽  
Insight Into

Introducing a technology-enhanced learning standard in engineering study programs requires a deeper insight into and understanding of the complexity and dynamics of today’s engineering systems. This can be achieved by embedding Modeling and Simulation (M&S) within engineering study programs to stimulate educational innovations in undergraduate engineering curricula, such as electrical engineering. An example of this is in the process of being implemented in the Department of Electrical Engineering (EE) at the University of Nebraska – Lincoln (UNL). The need for such programs is evident by recent recommendations from the White House, the U.S. Congress, and the National Science Foundation, all of which stress that M&S is one of the key enabling technologies of the 21st century and is critical to U.S. competitiveness. Various models of a dynamic engineering system can be developed at different levels of detail in accordance with the recommended technical specifications to gain better insight into the behavior, stability, and performance of a system. The functionality of a real engineering system can be tested virtually by changing the structure, parameters, and inputs and outputs of the model to accurately predict the response of the system under various operating conditions. In order to educate a skilled workforce capable of meeting the country’s critical needs, the educational requirements for undergraduates in an M&S-based EE program have to be developed. Such a program needs to meet the accreditation requirements set by the Accreditation Board for Engineering and Technology Inc. (ABET).

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