Miracle-dz/UniFAR-FTUs huggingface dataset:
Mobile Collaborative Learning (MCL) Based on Cloud Computing

Due to the improvement of mobile computing and wireless technology, nowadays mobile devices have become an important tool for learning and collaborations. Mobile Collaborative Learning (MCL) is an approach whereby users are virtually learning together by using their mobile devices via a communication network. This learning process taking place by a means of discussions forums, chatting, sharing learning materials such as files, video and sounds. As the demand for accessing these online learning resources increases, there is a concerned problem on how to manage this huge number of users to access services continuously and simultaneously with a guarantee of better services. Cloud computing is found to be a solution for this problem. It has a significant effect since it guarantees the users better performance, efficiency, security as well as maintenances with a minimum cost. The introduction on Mobile Collaborative learning in this field is very useful as many of the students and other individuals afford to own devices that can be used in the collaboration and learning process via cloud environment such as smartphones, tablets and PDA. In this paper, a Mobile Collaborative Learning, MCL architecture is proposed, the architecture describe in details on how the users will able to collaborate using their mobile devices to access and share information for learning purpose. Cloud storage is provided in order to provide wide and flexible service that will guarantee availability of service all the time.
Quantile Inverse Optimization: Improving Stability in Inverse Linear Programming

Although inverse linear programming (LP) has received increasing attention as a technique to identify an LP that can reproduce observed decisions that are originally from a complex system, the performance of the linear objective function inferred by existing inverse LP methods is often highly sensitive to noise, errors, and uncertainty in the underlying decision data. Inspired by robust regression techniques that mitigate the impact of noisy data on the model fitting, in “Quantile Inverse Optimization: Improving Stability in Inverse Linear Programming,” Shahmoradi and Lee propose a notion of stability in inverse LP and develop an inverse optimization model that identities objective functions that are stable against data imperfection. Although such a stability consideration renders the inverse model a large-scale mixed-integer program, the authors analyze the connection between the model and well-known biclique problems and propose an efficient exact algorithm as well as heuristics.
Contractibility results for certain spaces of Riemannian metrics on the disc

We provide a general contractibility criterion for subsets of Riemannian metrics on the disc. For instance, this result applies to the space of metrics that have positive Gauss curvature and make the boundary circle convex (or geodesic). The same conclusion is not known in any dimension $n\geq 3$, and (by analogy with the closed case) is actually expected to be false for many values of $n\geq 4$.
Overhead analysis of the utilization of hardware assisted virtualization for protecting guest operating system applications

Todays commercial processors provide various hardware capabilities for monitoring and protecting systems from cyber intrusions. One technique suggested in the literature is to utilize hardware assisted virtualization (HAV) capabilities of modern processors and a hypervisor to provide security protections for a virtualized operating system (OS) and applications. Under this design, however, the security of the hypervisor is critically important. We use a formally verified microkernel (the security embedded L4, or seL4, microkernel) as a security hypervisor in order to provide a strong foundation for building security protections. We report on a series of experiments that measure the overheads associated with adding security protections into a system via our security hypervisor. Our security hypervisor uses common capabilities found in HAV extensions of modern processors to regain execution control every time the guest OS performs a context switch. This enables the hypervisor to perform additional security checks before running applications, including code verification and data integrity checks. Utilizing HAV in this manner adds significant overhead to guest OS context switches, an average of 6X in our experiments. To understand how this overhead affects system performance, we conducted experiments to measure the performance of a webserver under heavy traffic load. The system performance overhead with the context switch hooks in place was negligible. Therefore, utilizing HAV with a formally verified microkernel hypervisor is a viable and resource-effective method for enabling security protections.
Joint rotation invariant feature for vehicle detection in aerial images

This paper introduces a joint feature of Fourier histograms of oriented gradients (FHOG) and local binary pattern (LBP) for vehicle detection in aerial images. Both of them are rotation invariant, so any rotation angle of vehicle in aerial images can be easily detected. A linear support vector machine (SVM) classifier is then trained over the joint feature vectors for the final vehicle detection. We evaluate our method on a public dataset and compare with some state-of-theart algorithms, the proposed joint feature outperforms them in detecting small targets in complicated backgrounds.
Roles of Individual- and Country-level Social Capital in Entrepreneurial Activities of Crowdfunding

This study examines the roles of individual- and country-level social capital in entrepreneurial activities from the context of crowdfunding. Two primary sources were used for data collection. From Kickstarter, the largest U.S.-based crowdfunding platform, this study obtained 15,716 crowdfunding projects and individual-level social capital. For country-level social capital, the social capital index from the 2016 Legatum Prosperity Index was utilized. By matching individual- and country-level social capital for each crowdfunding project, this research estimates the role of social capital in entrepreneurial activities at the individual and country level using the Poisson regression and the negative binomial regression. Individual-level social capital measured by the number of Facebook friends, the number of other crowdfunding projects that a crowdfunding project founder invested in, and the word count of the description of a crowdfunding project are positively associated with the number of crowdfunding projects created by founders. The country-level social capital measured by aggregated social capital index is also positively associated with the number of crowdfunding projects created by founders. Both individual- and country-level social capital have a positive impact on entrepreneurial activities in terms of the creation of new crowdfunding projects.
Cruise Line Customers ’ Responses towards Risk and Crisis Communication Messages : The Effects of Risk Perception Attitudes , Safety Perceptions , and Past Travel Experience *

The main purpose of this study was to test cruise line customers’ responses to risk and crisis communication messages addressing health-related incidents on cruise ships. This study used norovirus infections as the context and the Risk Perception Attitude framework as the conceptual foundation. An experiment was conducted to test how communication messages affected cruise line customers’ information search behavior, safety perceptions, and cruise travel intentions. A total of 240 responses were included and analyzed. The results revealed group differences on the three outcome variables. The results also showed that safety perceptions mediated the relationship between participants’ RPAs and cruise travel intentions. Based on the findings, this study provided practical implications on how to develop effective risk and crisis communication messages. This study also highlighted the need for more empirical and theory-driven research in the area of tourism crisis communication.
Energy properties of non-timber forest tree shell residues for fuel

A study was undertaken to determine some energy properties of three non-timber forest tree residues: Bush mango (Irvingia), Achi (Brachystegia eurycoma) and Para Rubber (Hevea brasiliensis) shells for fuel. Some ultimate properties (Carbon, Hydrogen, Oxygen, and Nitrogen contents) of the ground shells were determined. The proximate properties determined were volatile matter, ash and fixed carbon contents, and calorific values. The shells for the three samples were reduced with a hammer mill to 2.00 mm particle sizes. Mean of the energy properties of samples were compared using New Duncan’s Multiple Range Test to determine if there were significant differences (P≤0.05). Results obtained showed that Irvingia shells had the highest volatile matter of 75.03% and HHV of 19.53 MJ kg. The volatile matter of the three shells was of the order: Irvingia (75.03%) > Rubber (62.33%) > B. eurycoma (58.77%). Higher heat value for Rubber, B. eurycoma and Irvingia shells were 15.87, 15.20 and 19.53 MJ kg, respectively. Ash content obtained from the shell samples were of the order: Irvingia (5.10%) < Rubber (21.57%) < B. eurycoma (23.20%), fixed carbon were of the order: Rubber (2.50%) < Irvingia (7.17%) < B. eurycoma (10.70%). The Irvingia shell had the most favourable energy properties for fuel due to its high calorific values, volatile matter and the least ash content, which makes it a good feedstock for bioenergy. The moisture contents (%wb) of the three samples: Irvingia, B. eurycoma and rubber shells increased from; 5.51%-16.35%, 4.94%-16.39% and 2.85%-15.15%, respectively as it was observed that the absorption of moisture starts earlier in rubber, B. eurycoma and Irvingia respectively.
EVALUATION OF THEATER ACTIVITY USING HELLWIG’S METHOD

The aim of the presented study is a comparison of the effects of the operational activity of city and regional cultural organizations in the context of accessibility. The studies are also an attempt to find indicators (variables) determining the most effective financing methods for operational activity of cultural organizations. For this purpose, determining indicators were identified, which drive the efficient activity of theaters. The authors share the view that accessibility is the main factor determining the effectiveness of public cultural services. Hellwig’s method of the capacity of indicators’ information and development was used to identify efficiency drivers for cultural institutions. Classification based on financial and operational metrics led to the best organizations that can play a model role.
High pitch - friendly face.

References: ●Ohala, J. (1980). The acoustic origin of the smile. Journal of the Acoustical Society of America , Vol. 68, S33. ●Huron, D. , Kinney, D. , & Precoda, K. (2006). Influence off pitch height on the perception of submissiveness and threat in musical passages. Emperical Musicology Review, Vol. 1(3), 170-177. ●Keaton,C, Mazur, A. , Segall, M. , Cysneiros, P., Divale, W. , Kilbridge, J., Komin, S. , Leahy, P., Thurman, B. , & Wirsing, R. (1981). Culture and the Perception of Social Dominancefrom Facial Expression. Journal of Personality and Social Psychology Vol. 40, 615-626. ●Morton, E. S. (1977) Ont he occurrence ans disgnificance of motivation-structural rules in some bird and mammal sounds. The American Naturalist Vol. 111, 855-869. Results 44 participants (19 female, 25 male) passing by on campus volunteered to sing high and low notes while we took their picture.
A NEW LABORATORY TO SUPPORT THE CHARACTERIZATION AND THE VALIDATION OF PROTOTYPES

In order to help the students of the Faculty of Engineering at the Université de Sherbrooke within the field of product design in engineering, the Laboratory for the Characterization and the Validation of Prototypes (LCVP) has been created. The facilities feature most of the resources needed to conduct experiments toward the estimation and measurement of critical parameters and specifications along the design process but also toward the final validation of a product design. To that end the support of a professional researcher is provided to advise the students toward the proper implementation of their test benches. Overall, the LCVP provides state-of-theart equipment and competent resources to the students from various departments at both undergraduate and graduate levels therefore improving their product design experience, while enhancing their competencies. This is indeed a unique feature of the LCVP, setting it apart from other initiatives targeted at supporting capstone and
Research on the Personalized Trajectory Privacy Protection Scheme for Mobile Social Network Based on Sensitivity Degree

In order to deal with the problem of trajectory privacy disclosure in mobile social network, this paper proposes a personalized mobile social network trajectory privacy protection scheme based on sensitivity degree. First of all, according to the various types users of different privacy needs, the appropriate protection principles are selected, so as to make up for the traditional privacy protection in the existence of excessive protection or low trajectory defects. Then, the sensitive trajectory anonymous and other related concepts are defined. This scheme was based on some technologies on Tire tree, including construction, pruning and reconstruction. Finally, it evaluated this scheme on real-world data set, the experiment results show that our scheme is better in trajectory location loss ratio and more efficient than state-of-the-art for privacy-preserving.
Development of Red Mangosteen Peel Extracts for Functional Beverage ]

Mundar or red mangosteen (Garcinia forbesii) peel has been known to contain various bioactive compounds with antioxidant potential, but research on its utilization is still limited. The aim of this research was to utilize red mangosteen peel for producing a ready-to-drink beverage with superior antioxidant activity and good sensory acceptance. In this study, dried red mangosteen peel (moisture content of 12%) was extracted with water (1:3, 1:5, 1:7, and 1:10 w/v) at different temperatures (40 and 50C). The antioxidant potentials of the extracts were compared in terms of their DPPH radical scavenging activities, total phenolic contents, and total monomeric anthocyanin contents. The red mangosteen peel extracted with water at a ratio of 1:7 at 40C showed the highest antioxidant activity, i.e. 717.44±0.44 AAE μg/mL, 843.48±0.77 GAE μg/mL, and 46.55±0.30 CGE mg/L, respectively. These extracts were then mixed with corn milk, cinnamon extract and sucralose to develop functional beverages. Three beverage formulas with different concentrations of mundar peel extracts (5, 6, and 7% v/v) were examined by panelists using a hedonic test for their sensory qualities (color, aroma, taste, and mouthfeel). The results suggested that beverage with 6% mundar peel extracts was the most preferred formula. The total soluble content, pH, viscosity, and DPPH radical scavenging activity of this preferred formula were 2.98±0.05°Brix; 4.32±0.01; 4.93±0.16 cP, and 1025.78±8.39 AAE μg/mL, respectively.
PREVALENCE OF CD 8 / CD 4 RATIO IN THE FETAL THYMIC PARENCHYME IN DOWN ’ S SYNDROME

In the thymic cortex, massive numbers of densely packed small thymocytes (thymic lymphocytes) predominate, occupying the interstices of the epithelial reticulum, which in histological sections they largely obscure, and forming about 90 % of the total weight of the thymus. A distinct subcapsular zone is present, housing the thymic stem cells, prothymocytes and lymphoblasts undergoing mitotic division. The first stem cells to enter the thymus in the embryo come from the yolk sac and liver during their haemopoietic phases, possibly, as in birds, being attracted by thymic chemotactic substances. During later periods it is probable that all thymic lymphocytes originate in the bone marrow, or at least have sojourned there, before passing in the bloodstream to the thymus.The cortex has two rather ill-defined zones: an outer cortex with a framework of Types 1–3 epitheliocytes and a deep cortex where Type 4 cells occur. Thymocytes undergo mitosis in all cortical zones as the clones of differentiating T cells mature, gradually moving deeper in the cortex. In rodents, cell cycling times of 8 hours have been recorded in the outer cortex, but no estimates exist for the human thymus. The appropriate conditions for the proliferation and differentiation of thymocytes appear to be produced by their close proximity to neighbouring epitheliocytes (9). Although the nature of these interactions is not clear, it may involve the release from the epitheliocytes of soluble mitogenic and differentiation factors as well as induction of changes through intercellular contact. During this process, thymocytes differentiate along the T-cell line, acquiring the CD3 + marker and T-cell receptors for antigen, and also switching into different subpopulation of T cells (3). The great range of different T-cell receptor types, running into many millions, is also established here by the expression of variable genes and related mechanisms (3). As time passes, the differentiating thymocytes enter the medulla, and migrate through the walls of venules and lym-
Structural Bioinformatics Core Fine-grained Protein Fold Assignment by Support Vector Machines using generalized n −peptide Coding Schemes and jury voting from multiple parameter sets

In the coarse-grained fold assignment of major protein classes, such as all-α , all-β , α + β , α /β proteins, one can easily achieve high prediction accuracy from primary amino acid sequences. However, the fine-grained assignment of folds, such as those defined in the Structural Classification of Protein (SCOP) database, presents a challenge due to the larger amount of folds available. Recent study yielded reasonable prediction accuracy 56.0 % on an independent set of 27 most populated folds. In this report, we apply the support vector machine method (SVM), using a combination of protein descriptors based on the properties derived from the composition of n -peptide and jury voting, to the fine-grained fold prediction, and are able to achieve an overall prediction accuracy 69.6% on an same independent set, significantly higher than the previous results. On ten-fold cross validation, we obtained prediction accuracy 65.3%. Our results show that primary sequences contain SVM coupled with suitable global sequence coding schemes can significantly improve the fine-grained fold prediction and our approach should prove useful in structure prediction and modeling.
Title A Primordial Attachment to the Nation ? French and Irish Workers and Trade Unions in Past

We aim to contribute to a better understanding of the dynamics that are driving EU politicization and the rising Euroscepticism of workers and unions in the public sphere. One explanation frames the rise in Euroscepticism in cultural terms, emphasizing workers’ alleged primordial attachment to their nation. A second uses socioeconomic frames, linking growing Euroscepticism to the increasingly neo-liberal direction of the EU. The weight of these competing frames in the referendum campaigns on the EU Constitution in France and the Lisbon Treaty and the Fiscal Treaty in Ireland cannot be measured easily, as the categorization of a phrase as socioeconomic or cultural is in itself subject to political classification struggles. We therefore presents the findings of an inductive lexical analysis of all Irish Times, all Le Monde and all workeror union-related articles published in almost all national media outlets during the mentioned referendum debates. This was made possible by the Alceste software package that allowed us to analyse very large corpuses of articles inductively. Our analysis reveals that socioeconomic terms dominated policy debates in both countries. The findings question existing EU politicization studies that were measuring the salience of different frame types by deductive analysis.
Monitor hy and how did Israel adopt activity-based hospital ayment ? The Procedure-Related Group incremental reform

Historically, Israel paid its non-profit hospitals on a perdiem (PD) basis. Recently, like other OECD countries, Israel has moved to activity-based payments. While most countries have adopted a diagnostic related group (DRG) payment system, Israel has chosen a ProcedureRelated Group (PRG) system. This differs from the DRG system because it classifies patients by procedure rather than diagnosis. In Israel, the PRG system was found to be more feasible given the lack of data and information needed in the DRG classification system. The Ministry of Health (MoH) chose a payment scheme that depends only on inhouse creation of PRG codes and costing, thus avoiding dependence on hospital data. The PRG tariffs are priced by a joint Health and Finance Ministry commission and updated periodically. Moreover, PRGs are believed to achieve the same main efficiency objectives as DRGs: increasing the volume of activity, shortening unnecessary hospitalization days, and reducing the gaps between the costs and prices of activities. The PRG system is being adopted through an incremental reform that started in 2002 and was accelerated in 2010. The Israeli MoH involved the main players in the hospital market in the consolidation of this potentially controversial reform in order to avoid opposition. The reform was implemented incrementally in order to preserve the balance of resource allocation and overall expenditures of the system, thus becoming budget neutral. Yet, as long as gaps remain between marginal costs and prices of procedures, PRGs will not attain all their objectives. Moreover, it is still crucial to refine PRG rates to reflect the severity of cases, in order to tackle incentives for selection of patients within each procedure. © 2016 The Author(s). Published by Elsevier Ireland Ltd. This is an open access article under the CC BY-NC-N Open Access for this article is made possible by a collaboration etween Health Policy and The European Observatory on Health Systems nd Policies. ∗ Corresponding author at: Smokler Center for Health Policy Research t Myers-JDC-Brookdale Institute JDC Hill POB 3886 Jerusalem, 91037, srael. E-mail address: shuli@jdc.org. il (S. Brammli-Greenberg). http://dx.doi. org/10.1016/j.healthpol. 2016.08. 008 168-8510/© 2016 The Author(s). Published by Elsevier Ireland Ltd. This is an ope rg/licenses/by-nc-nd/4.0/). D license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Malaysian Journal of Civil Engineering 21(2) : 180-194 (2009)

The use of palm oil fuel ash (POFA) as a pozzolanic material for cement replacement in concrete will reduce the cost of concrete and environmental problems. POFA used in this study was ground to increase its degree of fineness to improve its reactivity in the mixture thus enhance the concrete properties. The present study is designed to determine the effect of POFA fineness towards durability of high strength POFA concrete in aggressive environment specifically in terms of increasing its resistance towards chemical attacks namely sulphate, acid and chloride penetration. Two types of mixes were prepared using ash possessing different fineness namely 45 μm and 10 μm and a control mix with OPC. The entire high strength POFA concrete specimens prepared consist of 20% POFA as partial cement replacement material. Conclusively, integration of POFA as partial cement replacement, especially very fine POFA increase the resistance of high strength POFA concrete in chemical environment towards chloride penetration, acid and sulphate attack .