scholarly journals Performance-Based Comparative Assessment of Open Source Web Vulnerability Scanners

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Mansour Alsaleh ◽  
Noura Alomar ◽  
Monirah Alshreef ◽  
Abdulrahman Alarifi ◽  
AbdulMalik Al-Salman
Keyword(s):  
Open Source ◽  
Comparative Evaluation ◽  
Dynamic Testing ◽  
Comparative Assessment ◽  
Multiple Perspectives ◽  
Vulnerability Detection ◽  
Significant Performance ◽  
High Level ◽  
Level Of Agreement

The widespread adoption of web vulnerability scanners and the differences in the functionality provided by these tool-based vulnerability detection approaches increase the demand for testing their detection effectiveness. Despite the advantages of dynamic testing approaches, the literature lacks studies that systematically evaluate the performance of open source web vulnerability scanners. The main objectives of this study are to assess the performance of open source scanners from multiple perspectives and to examine their detection capability. This paper presents the results of a comparative evaluation of the security features as well as the performance of four web vulnerability detection tools. We followed this comparative assessment with a case study in which we evaluate the level of agreement between the results reported by two open source web vulnerability scanners. Given that the results of our comparative evaluation did not show significant performance differences among the scanners while the results of the conducted case study revealed high level of disagreement between the reports generated by different scanners, we conclude that the inconsistencies between the reports generated by different scanners might not necessarily correlate with their performance properties. We also present some recommendations for helping developers of web vulnerabilities scanners to improve their tools’ capabilities.

The Effects of Bytecode Generation in XSLT and XQuery

2011 ◽  
Author(s):  
O'Neil Davion Delpratt ◽  
Michael Kay
Keyword(s):  
Open Source ◽  
Code Generation ◽  
Experimental Evaluation ◽  
Query Rewriting ◽  
Relative Importance ◽  
Development Team ◽  
Java Bytecode ◽  
High Level ◽  
Performance Gains

This paper attempts to analyze the performance benefits that are achievable by adding a code generation phase to an XSLT or XQuery engine. This is not done in isolation, but in comparison with the benefits delivered by high-level query rewriting. The two techniques are complementary and independent, but can compete for resources in the development team, so it is useful to understand their relative importance. We use the Saxon XSLT/XQuery processor as a case study, where we can now translate the logic of queries into Java bytecode. We provide an experimental evaluation of the performance of Saxon with the addition of this feature compared to the existing Saxon product. Saxon's Enterprise Edition already delivers a performance benefit over the open source product using the join optimizer and other features. What can we learn from these to achieve further performance gains through direct byte code generation?

The Development of the Open ACS Community

2011 ◽  
pp. 298-318 ◽  
Author(s):  
Neophytos Demetriou
Keyword(s):  
Open Source ◽  
Parent Company ◽  
Technical Development ◽  
Small Companies ◽  
Dominant Position ◽  
Open Source Project ◽  
High Level

OpenACS is a high-level community framework designed for developing collaborative Internet sites. It started from a university project at MIT, got momentum from the ArsDigita Foundation, and split up into a commercial and an open source version. OpenACS has proven its durability and utility by surviving the death of its parent company (ArsDigita) to grow into a vibrant grassroots collection of independent consultants and small companies implementing diverse and complex Web solutions around the globe for NPOs, philanthropy, and profit. A heritage from this history is a still dominant position of contributors with commercial interests that, in its intensity, is above the norm found in open source projects. In this paper, OpenACS, with its community is presented as a case study documenting the forces between commercial interests, securing investments, and technical development in a large open source project with a large proportion of commercial involvement.

scholarly journals A Method of Comparative Evaluation of the Drive Units of Two Bucket Elevators—A Case Study

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7439
Author(s):  
Piotr Sokolski ◽  
Justyna Sokolska
Keyword(s):  
Comparative Evaluation ◽  
Material Handling ◽  
Bulk Material ◽  
Probabilistic Approach ◽  
Operational Reliability ◽  
Comparative Assessment ◽  
Vibration Velocity ◽  
Velocity Analysis ◽  
The Time Domain

Bucket elevators are applied in many industries for bulk material handling. One of the main requirements for these devices is their high operational reliability. This applies in particular to power units that must operate continuously without failure. This article presents a comparative assessment of the drive units of two bucket elevators. The vibration intensity of their bearing units was used as the basis for the comparison. The evaluation was carried out using three independent methods based on the vibration velocity analysis: in the time domain, in the frequency domain and using the probabilistic approach.

scholarly journals Life cycle carbon emissions and comparative evaluation of selected open source UK embodied carbon counting tools

2019 ◽  
Vol 19 (2) ◽  
Author(s):  
Damilola Ekundayo ◽  
Solomon Olusola Babatunde ◽  
Aisha Ekundayo ◽  
Srinath Perera ◽  
Chika Udeaja
Keyword(s):  
Life Cycle ◽  
Open Source ◽  
Carbon Emissions ◽  
Environmental Performance ◽  
Energy Efficient ◽  
Comparative Evaluation ◽  
Carbon Regulation ◽  
Relative Contribution ◽  
Embodied Carbon

Life cycle carbon emissions (LCO2), made up of operational and embodied carbon, have become a major metric of building environmental performance and energy efficiency. Whilst there are now standard methods for operational carbon assessment due to its significance in LCO2, there is still less emphasis on embodied carbon counting. However, the relative contribution of embodied carbon is on the rise as buildings become increasingly energy efficient. Following the rule that only something which is measurable is manageable, it is essential that we are able to accurately count embodied carbon. This study therefore reviews the concept of LCO2 in buildings and further investigates the open source UK tools for embodied carbon counting. A comparative evaluation case study, which validates an earlier review, showed that there is no logic and consistency in the carbon figures produced by embodied carbon counting tools. This is mainly due to different system boundaries, varying underlying assumptions and methodological differences in calculation. The findings suggest that an industry-agreed data structure and common methodology is needed for embodied carbon counting. Generally, the study provides insights into the use and capabilities of the identified open source UK embodied carbon counting tools, and is relevant to the on-going debate about carbon regulation.

Work Life Balance Of Female Crew In The Aviation Industry: A Case Study

GIS Business ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. 206-212
Author(s):  
Dr. D. Shoba ◽  
Dr. G. Suganthi
Keyword(s):  
Family Life ◽  
Work Life ◽  
Work Life Balance ◽  
Aviation Industry ◽  
Life Balance ◽  
International Airport ◽  
Work Pressure ◽  
Women Employees ◽  
High Level

Employees and employers are facing issues in work life balance. It has become a difficult domain now, because the work needs have increased due to an increase in work pressure and complexities in handling the technology. As there are drastic changes in the rules and regulations in the work scenario of the aviation industry, it makes work life balance of employees difficult and set more hurdles. Hence there are many distractions and imbalances in the life of women employees in the aviation industry working across all levels. This work pressure is creating high level of hurdles in maintaining a harmonious job and family life, especially for female aviation employees. Data is collected from 50 female crew members working at Cochin International Airport. The objective of this study is to analyze the work life balance of working females of Cochin International Airport and its influence on their personal and specialized lives. The result of the study shows that the management should frame certain policies which will help employees to have the balance among their personal and expert lives.

COMPARATIVE EVALUATION OF GUT DECOMPRESSION METHODS IN OPERATIONS ON TOXIC WIDESPREAD PERITONITIS

2019 ◽  
pp. 34-37
Author(s):  
V.I. Midlenko ◽  
N.I. Belonogov ◽  
O.V. Midlenko ◽  
A.L. Charyshkin
Keyword(s):  
Small Intestine ◽  
Treatment Outcomes ◽  
Comparative Evaluation ◽  
Comparative Assessment ◽  
Abdominal Pressure ◽  
Treatment Results ◽  
Intestinal Decompression ◽  
Bowel Decompression

The aim of the paper is to conduct a comparative assessment of bowel decompression methods in operations on toxic widespread peritonitis. Materials and Methods. The authors examined 162 patients with widespread peritonitis of various etiologies. Using generally accepted methods, they compared treatment results using one of the three methods of intestinal decompression: cecostomy, nasointestinal intubation, and cecostomy with intubation of the small intestine. Results. It was detected that in case of small intestine intubation through the cecostomy (in comparison with other methods), intra-abdominal pressure returned to normal on the 2nd day, and in case of cecostomy or nasointestinal intubation – on the 5th and 7th day, respectively. Also, decrease in intoxication indicators was observed 2 days earlier than usual. Conclusion. Intubation of the small intestine through the cecostoma provides the most adequate intestinal decompression in patients with advanced toxic peritonitis. Early normalization of intra-abdominal pressure in patients with advanced toxic peritonitis improves treatment outcomes. Keywords: widespread peritonitis, intestinal decompression. Цель – сравнительная оценка способов декомпрессии кишечника при операциях по поводу распространённого перитонита в токсической стадии. Материалы и методы. Наблюдали 162 пациента с распространённым перитонитом различной этиологии. С использованием общепринятых методик сравнивались результаты лечения при применении одного из трёх способов декомпрессии кишечника: цекостомии, назоинтестинальной интубации и наложения цекостомы с интубацией тонкой кишки. Результаты. Установлено, что при использовании интубации тонкого кишечника через цекостому, в сравнении с другими применявшимися нами способами, внутрибрюшное давление нормализовалось на второй день, а при использовании цекостомии или назоинтестинальной интубации – на 5-й и 7-й дни соответственно. Также на 2 сут раньше происходило снижение показателей интоксикации. Выводы. Наиболее адекватную декомпрессию кишечника у пациентов с распространённым перитонитом в токсической стадии обеспечивает интубация тонкого кишечника через цекостому. Ранняя нормализация внутрибрюшного давления у пациентов с распространённым перитонитом в токсической стадии позволяет улучшить результаты лечения. Ключевые слова: распространённый перитонит, декомпрессия кишечника.

Performance Comparison of Web Backend And Database: A Case Study Of Node.JS, Golang and MySQL, MongoDB

2019 ◽  
Vol 13 ◽  
Author(s):  
Faried Effendy ◽  
Taufik ◽  
Bramantyo Adhilaksono
Keyword(s):  
Response Time ◽  
Open Source ◽  
Poisson Distribution ◽  
Mobile Application ◽  
Web Applications ◽  
Performance Comparison ◽  
Memory Usage ◽  
Data Traffic ◽  
Cpu Utilization

: Substantial research has been conducted to compare web servers or to compare databases, but very limited research combines the two. Node.js and Golang (Go) are popular platforms for both web and mobile application back-ends, whereas MySQL and Go are among the best open source databases with different characters. Using MySQL and MongoDB as databases, this study aims to compare the performance of Go and Node.js as web applications back-end regarding response time, CPU utilization, and memory usage. To simulate the actual web server workload, the flow of data traffic on the server follows the Poisson distribution. The result shows that the combination of Go and MySQL is superior in CPU utilization and memory usage, while the Node.js and MySQL combination is superior in response time.

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