Miracle-dz/UniFAR-FTUs huggingface dataset:
Optimization and Wear Properties for the Composites of Metal Matrix AA8011/Boron Nitride Using Taguchi Method

forti ﬁ ed with Boron Nitride particles are created using the powder metallurgy route and contain weight fractions ranging from 10% to 15% of the AA8011 and 37 μ m Boron Nitride particles. The material is made in an electric melting furnace through a stir casting procedure. Next, the materials are tested to see how long they will last in a tribotester set up like this: a block on a roller. With a controlled experimentation strategy, wear data can be collected using the L27 Taguchi method. Dry sliding wear of composites is controlled by four parameters: Boron Nitride substance, load-bearing capacity, slid speed, and sliding time. An analysis of variance is used to determine their e ﬀ ects. Sliding speed, friction, and normal load all have an e ﬀ ect on how much dry sliding wear occurs. In addition, the least amount of wear is obtained by combining the four controlling parameters optimally.
Collaborative Cloud-based Application-level Intrusion Detection and Prevention

—The recent years have witnessed an increasing number of coordinated and large-scale attacks. This comes at no surprise as data processing, transfer and storage have got and continue to be faster and cheaper. A standalone Intrusion Detection System (IDS) may only be exposed to a narrow subset of such attacks, which could be too insigniﬁcant to raise suspicion. In contrast, a Collaborative Intrusion Detection System (CIDS) leverages collaboration among its members across multiple networks and organizations. In this work, we extend our Application-level Unsupervised Outlier-based Intrusion Detection and Prevention framework by leveraging the beneﬁts of CIDSs. More speciﬁcally, we design a collaborative intrusion detection architecture made of three levels: the organization level, the domain level and the overarching root level. This hierarchical architecture combined with streaming and clustering offers very good privacy, scalability, accuracy and resilience tradeoffs. Moreover, the adoption of the cloud as a cost-effective and elastic platform allows us to handle big data generated by millions of applications as alarm streams. We also specify a lightweight Application Alarm Message Exchange Format (A2MEF) to support collaboration among the different stakeholders. Finally, we design a reputation-based alarm correlation algorithm that manages the iterative and bidirectional relationship between the reputation of involved parties and the accuracy of their reported alarms.
The Origin and Fate of O 2 in Europa’s Ice: An Atmospheric Perspective

The early prediction and subsequent detection of an O 2 atmosphere on Europa, coupled with the discovery that Europa has an ocean under its ice mantle, has made this moon a prime astrobiologic target, soon to be visited by the JUICE and Europa Clipper spacecraft. In spite of the considerable number of observational, modeling, and laboratory efforts, understanding the physics leading to the observed morphology of Europa’s near-surface O 2 atmosphere has been problematic. This is the case as the observed emissions depend on the local incident plasma ion ﬂux, the local temperature and composition of the regolith, as well as on the near-surface electron temperature and density. Here we rely heavily on earlier reviews brieﬂy summarizing the observational, laboratory and simulation efforts. Although it is agreed that radiolysis of the surface ice by the incident Jovian plasma is the ultimate source of observed O 2 , a recent, simple model of thermal desorption from a regolith permeated with O 2 has changed the usual paradigm. In that model, the observed orbital dependence of the local source of the near-surface O 2 atmosphere is suggested to be due to the release of O 2 likely trapped on the ice grains at dangling bonds by the solar ﬂux with a smaller contribution due to direct sputtering. This assumes that Europa’s icy regolith is permeated with trapped O 2 , which could also affect our understanding of the suggestion that the radiolytic products in Europa’s regolith might be a source of oxidants for its underground ocean.
Designing a User-Centered Music Experience for the Smartwatch

With a rapid growth in smartwatch and smartwatch audio technologies, there is a lack of knowledge regarding user needs for smartwatch audio experiences and how those needs can be satisfied through user-centered design. Previous smartwatch user behavior studies suggest that audio app usage is not a primary use case for the smartwatch. However, audio applications are increasing ly incorporated into smartwatches, which leads to the question of the apps’ purpose, validity, overlooked contexts and use cases. This thesis aims to understand what kind of audio experience(s) a user-centered design process might generate for smartwatches. The design process generated insights from smartwatch users of audio applications, that were used as design guidelines for Context Awareness, Micro-interactions
Re-examining a standard proxy for sexual selection: plumage 1 dichromatism is negatively correlated with song divergence in 2 passerine birds 3

Sexual selection is proposed to be an important driver of speciation and phenotypic diversification in 29 animal systems. However, previous phylogenetic tests have produced conflicting results, perhaps 30 because they have focused on a single signalling modality (visual ornaments), whereas sexual 31 selection may act on alternative signalling modalities (e.g. acoustic ornaments). Here we compile 32 phenotypic data from 259 avian sister species pairs to assess the relationship between visible 33 plumage dichromatism  a standard index of sexual selection in birds  and macroevolutionary 34 divergence in the other major avian signalling modality: song. We find evidence for a strong negative 35 relationship between the degree of plumage dichromatism and divergence in song traits, which 36 remains significant even when accounting for other key factors, including habitat type, ecological 37 divergence and interspecific interactions. This negative relationship is opposite to the pattern 38 expected by a straightforward interpretation of the sexual selection-diversification hypothesis, 39 whereby higher levels of dichromatism indicating strong sexual selection should be related to greater 40 levels of mating signal divergence regardless of signalling modality. Our findings imply a ‘trade-off’ 41 between the elaboration of visual ornaments and the diversification of acoustic mating signals, and 42 suggest that the effects of sexual selection on diversification can only be determined by considering 43 multiple alternative signalling
Random Matrix Theory-Based ROI Identification for Wireless Networks

The identification of region of interests (ROIs) in wireless networks holds the potential to resolve the challenging problems of resource allocation and network traffic prediction for large scale traffic data generated by mobile applications. The rationale is that ROIs are capable of gathering single regions that share similar network characteristics, which promotes better network traffic prediction performance. Previous studies show that spatiotemporal information in network traffic data, such as user behaviors and network status, is nontrivial to ROI identification. However, the modeling between these clues regarding spatiotemporal information is not yet fully explored. To this end, we propose a random matrix theory-based ROI identification (RRI) approach. By observing the intensification or diminution of network characteristic differences, i.e., divergence, between adjacent single regions, the ROIs can be identified. Firstly, we leverage the spatiotemporal information of area network traffic data with a spike model which can be described as a zero mean random matrix with a deterministic perturbation matrix. Then, we put forward an average divergence capacity model for ROI identification by estimating the divergent degree of adjacent regions. Case studies on three real-world network traffic datasets demonstrate the effectiveness of our proposed RRI method. The ROI identification greatly improves the network traffic prediction performance, yielding a decrease of root mean square error and mean absolute error by 36.87 % and 52.26 % , respectively.
Literacy: A Way Forward for Quality Education in Nigeria

This paper examines the assessment of literacy as a way forward for quality primary education in Nigeria. Literacy is a life-blood of an individual skills, knowledge, attitude and potentialities. Therefore, assessment in teaching and learning of English gives the teacher the evaluative picture of students’ linguistic background, language competency and the needs of the learner. moreover, the paper posits that multiple of assessments in reading and writing improve students’ level of proficiency in mastering the language. The paper also examines some types of assessment which gives the language teacher an advantage of choice of testing a particular skill be applied in teaching and learning of the basic language skills. However, the paper discussed the purpose of assessment in relation to literacy.
Health-Related Quality-of-Life and Associated Factors Among Children and Adolescents with Type 1 Diabetes Mellitus: A Cross-Sectional Study

Background Type 1 diabetes mellitus (T1DM) is one of the most common chronic diseases during childhood and adolescence. It threatens the health and endangers life with consequences for the physical and emotional development of the child and adolescent. Our study aimed at determining the health-related quality-of-life (HRQoL) and factors affecting it in children and adolescents with T1DM. Methods A hospital-based cross-sectional study was conducted among 379 randomly selected children and adolescents, 5–18 years of age, with T1DM on follow-up at endocrine clinics from 25 August to 25 September 2021. PedsQLTM 4.0 generic core scales were used to collect the data. Paired sample t-test was used to compare children’s and adolescents’ self-reports and caregiver’s reports. Bivariable and multivariable linear regression is used to explore to identify significant predictor factors of HRQoL. Results Total mean score of HRQoL was 88.42±10.82 as reported by the children and adolescents and 82.17±12.65 reported by their primary caregivers. According to self-reports, age (β=−0.197, p=0.028), mothers’ educational status (β=0.242, p<0.001), fathers’ educational status (β=0.259, p<0.001), fathers’ occupation (β=0.170, p=0.038), frequency of insulin administration (β=−0.132, p=0.007), diabetes duration (β=−0.101, p=0.050), and frequency of monitoring of blood glucose (β=0.165, p=0.006) were statistically significant predictors of HRQoL, explaining 21.6% of the variability of total HRQoL scores of children and adolescents (R2=0.216, F(21,357)=5.968, p<0.001). Conclusion Children and adolescents with T1DM in Ethiopia have relatively good HRQoL. Increased age, longer diabetes duration, and insulin administrations of three times per day were associated with decreased HRQoL scores. Educated parents, having an employed father, and frequent blood glucose monitoring were associated with higher HRQoL scores.
Fabrication and performance analysis of concentrated hybrid photovoltaic system

Sun is the most important source of renewable source of energy. During the past few decades there has been an everincreasing interest in Photovoltaic (PV) cells as it directly converts solar radiation into electricity. This paper involves the performance study of photovoltaic system under concentrated solar radiation. The main problem with the concentration solar energy is the drastic increase in temperature of the photovoltaic module resulting in a decrease in performance efficiency of the system. This problem of overheating of the system can be overcome by providing cooling which would ensure operation of the module in the optimal temperature range. Hence, the setup would function as a hybrid model serving the dual purpose of power generation while also utilizing the waste heat for water heating applications. The experimental set up consist of a novel arrangement of concentrator and reflector and the cooling system. The Hybrid Photovoltaic System was repeatedly tested under real time conditions on several days. A comparison was drawn between the results obtained from direct exposure of a standard photovoltaic module to that obtained from the hybrid system in order to better understand the improvement in performance parameters. The study shown a significant improvement of output of standard photovoltaic module under the concentrated solar radiation.
Isolation, Molecular Identification and Antibacterial Potential of Marine Bacteria from Deep Atlantic Ocean of Morocco

Background: Antibiotic resistance is an important concern for the public health authorities at global level. It is detrimental to human and environmental ecosystems, thus, there is a big need for natural bioactive compounds. In this work, we aimed to find out biomolecules derived from marine bacteria that may constitute an alternative to antibiotics. Methods: We isolated and identified thirty one marine bacteria collected from deep ocean water in central coast of Safi city, Morocco. Then, we induced biomolecules production in six marine bacterial strains. The extracts were tested for their antibacterial activity against gram-negative and gram-positive bacteria such as Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 33592 and Listeria monocytogenes ATCC 19117. Furthermore, we partially analyzed the chemical composition of these biomolecules and evaluated their sensibility to different temperatures. Results: The six marine bacteria were able to produce molecules which inhibited the three pathogenic strains with high inhibition zones reaching 27 mm. These molecules were characterized by heat stability from 60 to 121°C relying on each strain. Conclusion: The produced molecules may offer a great potential to pharmaceutical industries as they may constitute an alternative to antibiotics that are becoming less effective due to the emergence of drugs resistance.
Study of the Recharge Area on Water Basin Soil with Remote Sensing Method Using Satellite Imagery Landsat 7 ETM + and Geographic Information Systems ( GIS ) (Case Study : Pasuruan District )

Water is natural resources that is very essential for living creatures and the environment. Along with the increase of population , will increase the water demand and reduce the area of free land / open green space for the formation of ground water. By considering soil water conservation aspects, it is necessary to conduct a study of the recharge area on water basin soil in Pasuruan. This study was to determine the condition of the recharge area in the Basin Groundwater Pasuruan in 2003 and 2014. So it will be k[1]nown the changes of the vegetations density and land cover in the recharge area that can affect infiltration process in order to conserve water resources in CAT Pasuruan. From these changes it would be able to make the prediction of future conditions in the recharge area in CAT Pasuruan. This study uses Remote Sensing using Satellite imagery Landsat and Geographic Information System (GIS). Studies to determine the recharge area is influenced by several parameters, that is slope of land, lithology and Rainfall. Processing results obtained vegetation density changes of the recharge area in 2003-2014, high vegetation density decreased by 4330,89 Ha, so that changes in the high vegetation density in 2025 is predicted to be 52305,39 Ha and become 52176,78 Ha in 2030. While land cover changes produce changes in forest land cover increased by 569,88 Ha , so that changes in forest land cover in 2025 is predicted to be 37563,88 Ha and became 38720,494 Ha in 2030. The relationship between vegetation density and land cover of the recharge area in 2003 - 2014 obtained high vegetation density that experienced an increase area, which is on garden land cover amounting to 1144,80 Ha, 943,02 Ha of forest, 947,79 Ha of settlements land cover and 262,53 Ha of vacant land. And that experienced an increase with low vegetation density are the fields amounting to 943,02 Ha and 277,47 Ha of vacant land. Land cover vegetations that dominates throughout the recharge area is a mahogany tree vegetation, and sengon.
``Fall Program: Visual Ethnography'' -- A Case of Remodeling Cultural Exchange Program into an Academic Virtual Mobility

For more than a decade, virtual mobility functioned as an add-on to a physical mobility and served as an inclusion strategy for Higher Education Institution in providing equality for diffable students. However, it has become the foremost option in time of the Covid-19 pandemic. This article describes the author’s effort of remodeling the physical cultural exchange program into a credit-based virtual mobility. The aim is to provide an international constructive learning process of capturing students’ own as well as other customs and ways of life into a video or photo collage using Visual Ethnography methods. The program was attended by 51 students coming from 6 countries. They were grouped in 11 small groups for which each was assigned a supervisor. In this program, the virtual and distant learning techniques were combined for delivering lectures, while blended learning technique was applied for live sessions. Participants’ discussion and collaboration were mediated through agreed ICT-based tools within the group. In addition to lectures, a synchronous Focus Group Discussion (FGD) was held once a week to monitor student tasks and progress on their final project. The assessment was based on participants’ engagement throughout the program and performance on completing the assigned tasks. The drop-off rate achieves 18% in which participants from Timor Leste contributed the highest rate due to the Internet connectivity issues. Keywords: virtual mobility, visual ethnography, multidisciplinary distant collaboration, intercultural setting
IMPORTANCE OF USER-CENTERED DESIGN: "iTunesU Siena" EXPERIENCE .

In this article I add a further testimony in favor of the use of User-Centered Design methodology in the design of computer systems. The experience that I bring is based on three experimentations carried out before placing on-line platform “iTunesU Siena” (analysis and design, development of a prototype, the prototype evaluation, redesign of the platform, deploying a second prototype, new evaluation , platform release). Adopt the UCD and add it within the processes of design requires, for a company, both a change of mentality and a change in procedures. Thanks to the design User-Centred can “evolve”, questioning their rigidity and become more flexible companies.
Neodymium Isotopic Composition and Rare Earth Element Concentration Variations in the Coral and Solomon Seas

Significant progress has been made in the last decade on the understanding of the role of the Coral and Solomon Seas as major suppliers of waters and chemical elements to the equatorial Pacific. Yet, the location, depth, and processes of chemical enrichment of these waters remain poorly constrained. Neodymium (Nd) isotopic compositions ( ε N d ) and rare earth element concentrations (REE) are powerful tracers of land-ocean chemical exchanges. Combined, they can greatly refine the characterization of these exchanges. Here we report profiles of ε N d at 21 stations located in the Coral and Solomon Seas as part of the GEOTRACES GP-12 cruise that complement the rare earth element concentration (REE) profiles of Pham (Chemical Geology, 2019, 524 (May), 11–36). Waters exiting the Solomon Sea are generally slightly more radiogenic than the incoming ones, suggesting inputs of radiogenic material along their pathways across the Solomon Sea. This radiogenic material is brought to the surface waters via natural processes (rivers, volcanic dusts) and likely local mining activities. Noticeable ε N d increases are also observed in subsurface and intermediate layers. All these processes indicate the occurrence of local Boundary Exchange (BE) processes, which are estimated to occur within a few days. Coupling hydrological and chemical tracers allows highlighting the land-ocean interactions affecting some water layers and quantifying the exchanged fluxes of Nd. Modifications of the Nd concentration and isotopic composition in the lower thermocline layer require an external flux of 7.9 ± 2.0 t(Nd)/yr only partly balanced by a scavenging flux of 1.8 ± 2.3 t(Nd)/yr, leading to a net influx of 6.1 ± 1.7 t(Nd)/yr. Regarding the Upper Circumpolar Deep Water, a total net flux of 105 ± 50 t(Nd)/yr is estimated, the external flux is relatively high (86 ± 31 t(Nd)/yr while the scavenging flux remains. These results refine the role of the Solomon Sea as a supplier of continental chemical elements to the Pacific equatorial waters.
Salivary Effector Sm9723 of Grain Aphid Sitobion miscanthi Suppresses Plant Defense and Is Essential for Aphid Survival on Wheat

Aphid salivary effectors play important roles in modulating plant defense responses. The grain aphid Sitobion miscanthi is one of the most economically important cereal aphids worldwide. However, little information is available on the identification and functional analysis of salivary effectors of S. miscanthi. In this study, a candidate salivary effector Sm9723 was identified, which was specifically expressed in aphid salivary glands and highly induced during the aphid feeding phase. Transient overexpression of Sm9723 in Nicotiana benthamiana suppressed BAX and INF1-induced cell death. Further, Sm9723 overexpression inhibited N. benthamiana defense responses by reducing pattern-triggered immunity associated callose deposition and expression levels of jasmonic and salicylic acid-associated defense genes. In addition, the salivary effector Sm9723 of S. miscanthi was effectively silenced through nanocarrier-mediated dsRNA delivery system. After silencing Sm9723, fecundity and survival of S. miscanthi decreased significantly, and the aphid feeding behavior was also negatively affected. These results suggest salivary effector Sm9723 is involved in suppressing plant immunity and is essential in enabling aphid virulence, which could be applied as potential target gene for RNAi-mediated pest control of S. miscanthi.
“Dear IOC”: Considerations for the Governance, Valuation, and Evaluation of Trends and Developments in eSports

In 2021, the International Olympic Committee ventured virtual space by launching their first ever Olympic Virtual Series – featuring virtual baseball, cycling, rowing, sailing and motor racing. Interestingly, all these virtual events take strongly after their physical counterparts. Which begs the question: Where are the massively popular esports games like Fortnite, League of Legends, and Dota? –What do the Olympic Virtual Series have that these popular video games do not? Here, we argue for the inclusion of esports within the Olympic program. In many respects, esports “act” and “behave” just like traditional sports. We argue that esports and traditional sports share many of the same values, like the values of meritocracy, competition, fair play, and the value of having a “level playing field”. Yet, in esports, many of these values remain underappreciated, losing out to negative values such as physical inactivity and game-addiction. To preserve what is worth preserving, we borrow from Value Sensitive Design to ameliorate the design-tensions that are foregrounded in esports. Thereby, paving possible ways toward the inclusion of esports in the Olympic program. Ultimately, the question for the IOC should not be “does it look like ‘real sport’, as we know it? ”, but rather: are they sporting, rule-led, and fair activities worth preserving and setting an example for a new digitally savvy generation?