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

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