1,996 research outputs found
Toward Smart Moving Target Defense for Linux Container Resiliency
This paper presents ESCAPE, an informed moving target defense mechanism for
cloud containers. ESCAPE models the interaction between attackers and their
target containers as a "predator searching for a prey" search game. Live
migration of Linux-containers (prey) is used to avoid attacks (predator) and
failures. The entire process is guided by a novel host-based
behavior-monitoring system that seamlessly monitors containers for indications
of intrusions and attacks. To evaluate ESCAPE effectiveness, we simulated the
attack avoidance process based on a mathematical model mimicking the
prey-vs-predator search game. Simulation results show high container survival
probabilities with minimal added overhead.Comment: Published version is available on IEEE Xplore at
http://ieeexplore.ieee.org/document/779685
LECTURERS’ AND STUDENTS’ BELIEFS IN CODE-SWITCHING: A MALAYSIAN POLYTECHNIC CONTEXT
This research is to discover whether lecturers’ beliefs coincide with their practices in their daily teaching. The focus will be on the belief in the use of code-switching in the classroom. At the same time, it is also worthwhile to indicate whether there are differences in the beliefs between the lecturers and the students. For that purpose three lecturers from an engineering department of a polytechnic in a northern region as well as the students in the classrooms were chosen to participate in this research. The methods designed include classroom observations, questionnaires for both the lecturers and students, and interviews with the lecturers after the classroom observation. The findings showed that the lecturers mostly used reiteration and message qualification functions when code-switching. They believed that it was intended mainly to enhance their students’ understanding and to save their time from lengthy explanation whenever the students are in doubt. This was agreeable by most students as they believed that code-switching could help them understand the lessons better. Some recommendations are made based on the findings and analysis of the results, expecting that it would further improve the teaching of Mathematics, Science and technical subjects in the Malaysian polytechnics
Fear of COVID-19 and Anxiety in the Arabic Language Learners in Kuala Lumpur
The coronavirus disease 2019 (COVID-19) pandemic contributed to distress and affected mental health in many sectors, including education, which triggered fear and anxiety among learners and educators. Therefore, this research aimed to perceive mental health issues such as fear, stress, and anxiety during the pandemic, especially among learners aged between 15 to 25 from Kuala Lumpur, Malaysia. The questionnaire consisted of seven questions related to the Fear of COVID-19 Scale (FCV-19S). The respondents were invited to participate via social media platforms such as WhatsApp, Telegram, Emails, and Facebook. The link to the Google form was given to them to allow them to join the survey. Three hundred twenty-four respondents from Kuala Lumpur, Malaysia, participated in this survey to show their anxiety levels during this pandemic. The findings showed that the level of fear of COVID-19 was high and significant by using SPSS version 26. It also constructed mental health issues among the learners, decreasing their performance in education. This research is applicable to distinguish and describe the fear of the COVID-19 pandemic, which influences learners’ mental health. The findings also revealed that fear and anxiety were high and affected students’ performance
Countermeasure of Scour around Pier in Steady Current
The experiments on the countermeasures of scours around pier in steady current were conducted in this paper. The factor formations of scour were identified by extensive research of previous paper that related to the project. Scour formations were influence by the strength of the flow, the size of pier, and the sediment condition. From the literature, the project invented a few innovative pier protection measures which are single cross-threaded pier and double-cross threaded pier with variation of cable diameter and thread angle. These cross-threaded piers also tested with collar protection. As the result, the single cross-threaded piers and double cross-threaded piers able to reduce scour in average of 18% and 21% respectively. While, single cross-threaded piers with collar and double cross-threaded piers with collar able to reduce scour in average of 69% and 63% respectively. The single cross-thread pier with collar of 0.1 cable-pier diameter ratio and 15° thread angle outperforms other models with scour reduction of 79%. That shows the cable-pier diameter ratio and thread angle influent the performance of models in scour reduction. The large number of cross-threaded pier with large cable-pier diameter ratio and small thread angle will give the best performance in reducing potential formation of scour depth
Justifying government accounting change through management needs: The case of Morocco
The paper’s purpose is to contribute to the understanding of why governments adopt accounting practices borrowed from private corporations. Based on a conceptual framework centered on NPM, the evidence for this research was obtained through a qualitative study of the government accounting reform in Morocco (Government accountants, public accounting auditors and accounting professionals). The thematic analysis of collected data through interviews and documents focuses on the management needs that underlie this change by looking at the motivations of said actors. The results highlighted show an overlap between the rational logic and the mimetic logic underlying this accounting choice
Phylogenomic Review of Root Nitrogen-Fixing Symbiont Population Nodulating Northwestern African Wild Legumes
The present review discusses the phylogenomic diversity of root nitrogen-fixing bacteria associated to wild legumes under North African soils. The genus Ensifer is a dominant rhizobium lineage nodulating the majority of the wild legumes, followed by the genus Rhizobium and Mesorhizobium. In addition, to the known rhizobial genera, two new Microvirga and Phyllobacterium genera were described as real nodulating and nitrogen-fixing microsymbiotes from Lupinus spp. The promising rhizobia related to nitrogen fixation efficiency in association with some legumes are shared. Phylogenetic studies are contributing greatly to our knowledge of relationships on both sides of the plant-bacteria nodulation symbiosis. Multiple origins of nodulation (perhaps even within the legume family) appear likely. However, all nodulating flowering plants are more closely related than previously suspected, suggesting that the predisposition to nodulate might have arisen only once. The origins of nodulation, and the extent to which developmental programs are conserved in nodules, remain unclear, but an improved understanding of the relationships between nodulin genes is providing some clues
On an elliptic equation with singular cylindrical growth
In the present paper, an elliptic equation with singular cylindrical grouwth, is considered. By using the Nehari manifold and mountain pass theorem, the existence of at least four distinct solutions is obtained. The result depends crucially on the parameters k, λ, g and u
Comparative analysis of canal transportation using reciproc blue and wavo one gold in simulated root canals using different kinematics
Objective: The purpose of the current study was to assess and compare the shaping ability of WaveOne Gold and Reciproc Blue in reciprocation and counter clock wise rotation using standardized resin blocks and to assess time required to reach full working length. Methodology: A total of 52 curved canals in clear resin blocks with 30° angle of curvature and 16mm canal length were used in this study. The blocks were divided into 4 groups according to the instrument and motion utilized into: Reciproc Blue/Reciprocation (RB/R) group, Reciproc Blue/counter clock wise rotation (RB/CCW) group, WaveOne gold/Reciprocation (WG/R) and WaveOne gold/Counter clock wise rotation (WO/RCR). Standardized digital images were taken prior and post instrumentation. Then, Adobe Photoshop was used to superimpose post and pre-instrumentation images to evaluate the degree of canal transportation. Digital chronometer was used to record the time required for canal preparation. One-way ANOVA followed by Tukey post hoc test was used to compare between more than two groups in non-related samples. Results: No statistically significant difference was noted among all groups at the apical and middle thirds levels. As for the preparation time, both groups; RB/R and RB/CCW recorded significantly longer time than groups; WG/R and WG/CCW (P \u3c 0.001). Conclusions: The use of single-file in counter clock wise rotation showed favourable results in terms of avoiding canal transportation and preparation time
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