Miracle-dz/UniFAR-FTUs huggingface dataset:
Scalable Network Tomography System

Network Tomography enables network operators to measure end-to-end network metrics from several locations at the same time which are useful to a wide range of applications. In previous studies, network tomography was applied to attain a full mesh with active probing but most of the systems have central control and thus lack scalability. There are also a few which are distributed in nature but do not ensure full mesh coverage. They perform measurements of a subset of paths and try to use inference for remaining. But in case of measuring available bandwidth, inference is not a feasible technique. In contrast, we set out to achieve a full mesh-probing scheme which scales to the nation-wide Internet without using any inference technique. In this thesis report a novel network tomography system that uses probabilistic distributed scheduling for peer selection to probe for measurements is proposed. The system ensures that eventually the solution tends to full mesh probing. Bandwidth measurements congests the network and utilizes more system resource compared to measuring metrics like link loss or latency. This is a constraint which is also taken into account. In pursuit of providing full mesh coverage in a distributed system, each node needs to know about each other, and hence a group membership management protocol is introduced. A simple way to store the probed data in a distributed storage which can be queried in message hop is also presented. The system is designed as a plugin system which allows any existing measurement tool to be plugged in and perform measurements to extract the metrics of the network by active probing.
Generating and appropriating value: the case of aerospace systems integrators

This paper examines processes of value generation and appropriation in the aerospace industry. Beginning with a historical overview of the value concept and its recent applications, a framework which addresses some observed shortcomings will be presented, attempting to link concepts of functional value-added, costs and supply chains prevalent in manufacturing back to traditional competitive analysis and resource-based strategic frameworks. The framework is then validated and illustrated through case studies evidence from selected aerospace manufacturers, specifically systems integrators, whose business models link value creation with competitive sustainability. Systems integration tasks are examined as value generating and appropriating processes. Finally, implications for management are discussed.
Mineral Exploration Decisions: A Guide to Economic Analysis and Modeling

Exploration productivity filters and probability models for economic analysis economic feasibility of exploration for large regions discoverability modelling for resource and supply systems optimizing spatial allocation of search for economic targets selection of geologic environment and region optimum exploration budget and deposit size geometric probabilities and exploration optimization value of information and statistical decision analysis testing the grid drilling proposition comprehensive risk evaluation and dynamic exploration.
Social Doctrine of Tourism: Cultural and Educational Aspects

The theoretical approaches to the study of social doctrine, in particular the social doctrine of tourism is considered in the article. The social features of tourism development in modern conditions are reviewed. The basic approaches to understanding of social tourism as a separate type of tourism and its influence on social development are analyzed. The social content of the tourist service is considered as signs of social stratification. The content of the concept of social doctrine of tourism is defined. The necessity of development and realization of effective social doctrine of tourism with the consideration of regional social specifics is substantiated. The scheme of the functional structure of the social doctrine of tourism is developed. The features of culture and education as the key components of the social doctrine of tourism are determined. The expediency of improving the quality of vocational education in tourism has been substantiated in connection with the intensification of social processes and raising the level of social and economic development.
The effect of pyridine-alkaloid secondary metabolites on sunbirds gut microbiome

Background: Sunbirds (Cinnyris osea) feed on nectar of the tobacco tree (Nicotiana glauca), which contains the secondary metabolites nicotine and anabasine. These toxic pyridine-alkaloids presumably serve to deter nectar thieves and allow only specific pollinators to feed on nectar. The floral nectar contains low level of proteins and hence nectarivores may have problem balancing their nitrogen requirements. Our aim was to understand whether the gut microbiome of nectarivores contains bacteria that are able to degrade plant secondary metabolites and how the presence of secondary metabolites in nectar shapes the gut microbiome of nectarivores.Results: Sunbirds (n=16) that were held in captivity were randomly divided into control and treatment groups. The control group was fed with artificial nectar while the treatment group was fed with artificial nectar with the addition of nicotine and anabasine. Excreta were collected from each of the 16 birds on day 0 and at the end of weeks 2, 4 and 7. Nonmetric multidimensional scaling analysis (nMDS) demonstrated that the secondary metabolites significantly changed the gut microbiota composition and diversity of those sunbirds that were fed nectar with added pyridine alkaloids. Aeromonas, Enterobacteriaceae, Exiguobacterium, Klebsiella, Lactococcus, Leuconostoc, Rothia and Salmonella were found to contribute to the differences in gut microbiota between the control and treated birds (birds feed with Nicotine and Anabasine). Four weeks after starting to feed the birds with added nicotine and anabasine, we found that genera with the ability to degrade these pyridine-type metabolites proliferated from a total relative abundance of only 0.3% to 52.7% of the gut bacterial community.Conclusion: Sunbirds feed on Nicotiana nectar that contains toxic pyridine-alkaloids. Nonetheless, the symbiotic gut microbiota which is changing dynamically towards enabling the degradation of these secondary metabolites, supply the birds with nitrogen that enables the synthesis of essential amino acids. The current study contributes to our understanding of the complex relationships between plants, birds and their microbiomes.
Tactical Waypoint Maps: Towards Imitating Tactics in FPS Games

Modern FPS games do not only demand fast reactions from the participating human players but also require them to think tactically and strategically. While artifical players usually surpass their human counterparts in reaction time and accuracy, they are hopelessly lost if it comes to tactical and strategical gameplay. In this paper, we propose Bayesian imitation learning in conjunction with tactical waypoint maps as a means to learn tactical behaviors suited for "1 vs. 1" game situations. The empirical basis for our approach is given by the data contained in recordings of matches between human players. Experimental results underline the usability of tactical waypointmaps and bayesian imitation learning for the acquisition and generation of new behaviors in artificial players.
Small-Size Skin Features for Motion Tracking

Motion tracking systems for face or hands are usually based on tracking markers. Using markers for faces is inconvenient and there is small number of natural existing face features for precised movement tracking. Using high-frame rate and high resolution camera or cameras skin surface tracking is possible. The requirements for such system based on reduced number of markers and chromatic skin features for light sensitivity reduction are investigated in this paper. Streszczenie. Systemy śledzenia ruchu twarzy lub rąk zwykle bazują na śledzeniu znacznikow. Wykorzystanie znacznikow dla twarzy jest niewygodne, jednak mozliwe jest wykorzystanie istniejących cech twarzy. Wykorzystanie szybkiej i wysokorozdzielczej kamery lub kamer umozliwia śledzenie cech skory. Wymagania dla systemow bazujące na zredukowanej liczbie znacznikow oraz cechach skory są rozpatrywane w artykule. (Malo-rozmiarowe cechy skory dla śledzenia ruchu)
Thin Hypervisor-Based Security Architectures for Embedded Platforms

Virtualization has grown increasingly popular, thanks to its benefits of isolation, management, and utilization, supported by hardware advances. It is also receiving attention for its potential to support security, through hypervisor-based services and advanced protections supplied to guests. Today, virtualization is even making inroads in the embedded space, and embedded systems, with their security needs, have already started to benefit from virtualization’s security potential. In this thesis, we investigate the possibilities for thin hypervisor-based security on embedded platforms. In addition to significant background study, we present implementation of a low-footprint, thin hypervisor capable of providing security protections to a single FreeRTOS guest kernel on ARM. Backed by performance test results, our hypervisor provides security to a formerly unsecured kernel with minimal performance overhead, and represents a first step in a greater research effort into the security advantages and possibilities of embedded thin hypervisors. Our results show that thin hypervisors are both possible and beneficial even on limited embedded systems, and sets the stage for more advanced investigations, implementations, and security applications in the future.
FINITE ELEMENT MODELING TO VERIFY RESIDUAL STRESS IN ORTHOGONAL MACHINING

The aim of this thesis paper, to create a numerical model to examine the residual stresses induced by orthogonal machining in the finished work piece and the model is validated by comparing with experimental result. The finite element method is used to simulate and analyze the residual stresses induced by a orthogonal metal cutting process. A Dynamics explicit time integration technique with Arbitrary Lagrangian Eulerian (ALE) adaptive meshing Finite Element Method (FEM) is employed to simulate the model. The Johnson-Cook material model is used to describe the work material behaviour and fully coupled thermal-stress analysis are combined to realistically simulate high speed machining with an orthogonal cutting. Finite Element modelling of Residual stresses and resultant surface properties induced by round edge cutting tools is performed as case studies for high speed orthogonal machining of 20NiCrMo5 steel. As a conclusion we can say that results from 2D simulations are very close to the experimental results at the surface level, but there is bit difference when we go down in the material. In 3D simulation, results agree with the experimental values in all levels So we can say that it is possible to model residual stresses, induced by orthogonal machining with accepted amount of accuracy. Keywords Residual stress, FE-modelling, ALE formulation,3D.ABAQUS/CAE
Development and Preliminary Evaluation of an Education Program for Primary Care Teams on Discussing Firearms Storage Safety with Veterans

Background Reducing access to lethal means is one of the few empirically supported approaches for lowering suicide rates, and safe firearms storage practices have been associated with reduced risk of death by suicide. Although there is substantial opportunity for primary care to assist in addressing lethal means with veterans, approaches to intervention and educating staff are not well documented. We sought to 1) describe development of an education program for primary care teams to help them discuss firearms storage safety (FSS) with veterans during primary care visits; and 2) conduct a preliminary evaluation of the pilot education program. Methods We used an iterative process involving veterans and primary care staff stakeholders to develop program content, format, and supplemental materials. A grounded theory approach was used to analyze data from focus groups and individual interviews. Following piloting of the program with 71 staff members in two primary care clinics, we analyzed pre- and post-training participant surveys of program satisfaction and attitudes comfort related to firearms safety discussions. Results During the development phase, 68 veterans and 107 staff members participated in four veteran focus groups and four primary care focus groups, respectively, and/or individual interviews. The program that was developed, “‘Just in Case’: Discussing means safety with veterans at elevated risk for suicide,” addresses knowledge and skills learning objectives, and includes video demonstrations and skills practice. Survey data obtained just prior to the pilot training sessions showed low self-reported rates of discussing firearms safety with veterans who may be at elevated risk for suicide. Immediate post-training data showed generally high satisfaction with the program and significant improvements in participant self-reported ratings of the importance of, and comfort with FSS. Conclusions This interactive knowledge and skill-based means safety curriculum shows promise as a means for educating primary care staff to deliver messaging about firearms safety to veterans. Additional research is needed to refine and evaluate impacts of this or similar training programs on clinician and veteran behaviors over time.
Decent Work: Insights from India's IT Industry

Foreword Gerry Rodgers Preface Introduction I: THE CONCEPT AND THEORY Concept and Philosophy Theoretical Foundations of Decent Work II: MEASUREMENT AND APPLICABILITY Measuring Decent Work Selected Decent Work Indicators in Detail III: AN EMPIRICAL ANALYSIS OF INDIA'S IT INDUSTRY Section A: India's IT Industry - An Overview An Introduction to Global Information Economy and IT India's IT Industry in the Global Information Economy Key Features of IT Industry's Labour Market: A Critical Review Empirical Studies on IT Industry and Its Labour Market Applicability of Decent Work to India's IT Industry Section B: An Empirical Assesment of Decent Work Status in India's IT Industry Methodology of the Study and Key Features of the Sample Decent Work and Productive Employment Decent Work and Flexitime Work in IT industry Decent Work and Safe Work Decent Work and Work-life Balance of IT Employees Decent Work, Employment Conditions and Social Dialogue in IT Industry Decent Workplace and IT Industry in India Decent Work in IT Industry: Overall Scenario IV: CONCLUSION Conclusion and Policy Implications of Assessment of Decent Work in India Appendices References Index
Review of potential advantages and pitfalls of numerical simulation of self-excited vibrations

Machining stability is one of the most important fa ctors influencing the geometrical and dimensional a ccuracy of the machined parts. Regenerative chatter is a ma jor limitation to the productivity and quality of m achining operations due to poor surface finish and faster to ol wear. In general there are two methods of stabil i y analysis: solution of differential equations of the system in frequency domain or numerical simulation in time d omain. Fast and easy calculations in the frequency domain are possible using a simplified linear model of cut ting process. Important limitations of these methods are difficult or impossible considering of changes of dynamic cutting force coefficients and dynamic characterist ic of a process. Numerical simulation has not these limitations and regards many specific phenomena of the cutting processes, therefore it is often used in the stabil ity analysis. The paper presents main advantages of numerical sim ulation, which differentiates it from the analytica l solutions, as well as some inevitable difficulties and limitations.
Effektive Nutzung interaktiver Repräsentationen zum Erwerb von räumlichen Strukturen eines virtuellen Gebäudemodells : Einflüsse inter-individueller Unterschiede in Personenfähigkeiten und eines Mehrkomponenten-Trainingsprogramms

In dieser Dissertation werden die Zusammenhänge von inter-individuellen Unterschieden in visuell-räumlichen Fähigkeiten, in selbstberichteten Orientierungskompetenzen sowie in Vorerfahrungen mit Computerspielen in Bezug auf den Erwerb von räumlichen Strukturen eines komplexen virtuellen Gebäudemodells untersucht. Den Lernenden wurde ein 3D-Modell eines komplexen, mehrstöckigen Gebäudes präsentiert. Durch direkte Interaktion mit dem Modell sollten Informationen über komplexe räumliche Strukturen erworben werden. Dafür wurden den Lernenden unterschiedliche Interaktionsmöglichkeiten aus allozentrischen und egozentrischen Perspektiven zur Verfügung gestellt. Für das erfolgreiche Lernen der räumlichen Zusammenhänge sind zudem die selbstbestimmte Exploration des Modells und die effektive Nutzung der verschiedenen Interaktionsmöglichkeiten relevant. Um dies prüfen zu können, wurden die Lernenden indirekt in ihren Strategien beim effektiven Umgang mit Interaktionen mit oder ohne prompt-basierten Lernhilfen trainiert. Mittels Vergleichsanalyse wurden Effekte des Trainings auf verschiedene Komponenten des räumlichen Lernens untersucht. Die Ergebnisse der Regressionsanalysen zeigen, dass die inter-individuellen Personeneigenschaften einen großen Varianzanteil des räumlichen Lernens vor allem bei der Leistung in der Richtungsschätzung erklären können. Ihr Vorhersageeffekt wird jedoch bei dem Training von Strategiekomponenten weniger bedeutend. Seltener erweisen sich Explorationsstrategien während des Lernens und der Umgang mit den vorhandenen interaktiven Steuerungsmöglichkeiten als Prädiktoren des räumlichen Lernerfolgs. Das Kurzzeit-Training von kognitiven und metakognitiven Strategiekomponenten zeigt weder lernförderliche Effekte auf das Lernen von räumlichen Strukturen des virtuellen Gebäudes noch auf die Optimierung der Nutzung von Explorationsstrategien während des Lernens.
Comment on tc-2021-181

I'm puzzled by some of the wording used in this discussion paper including the title and the abstract. Seasonal variations in the thickness of the Greenland ice sheet have been reported on very many occasions based on observations from different satellite altimeters, so this paper is not the first to do this (e.g McMillan et al. (2016), Sutterley et al. (2018), and Gray et al., (2019)). And ICESat-2 certainly does not provide "the first space-based, seasonally repeating altimetry measurements of the ice sheets"; those were provided by ERS-1 (almost all of Greenland) and CryoSat-2 (all of Greenland).
iTeaching and Learning: Collegiate Instruction Incorporating Mobile Tablets

Mobile tablets will revolutionize higher education instruction across the academy, in some instances providing new solutions to accepted instructional limitations, in others eliminating unacknowledged hindrances, and in still others creating new challenges. Instructors at Indiana University–Purdue University Indianapolis (IUPUI) have been using iPads for instruction, including library instruction, since the fall of 2010. An eight-member group of faculty in art, music, communication studies, tourism management, physical education, education, organizational leadership and supervision, and the University Library have pioneered the institution’s use of mobile tablets, iPads, in the classroom. Chapter 9 of Library Technology Reports (vol. 48, no. 8) “Rethinking Reference and Instruction with Tablets” provides insights into how these and other disciplines are using iPads to create new transformative learning experiences. This chapter includes findings of a study on student perceptions of learning and engagement during instruction incorporating the use of iPads across disciplines.
Algorithmes et architectures multi-agents pour la gestion de l'énergie dans les réseaux électriques intelligents

Avec la convergence de plusieurs tendances profondes du secteur energetique, lesreseaux electriques intelligents (smart grids) emergent comme le paradigme principal pourla modernisation des reseaux electriques. Les smart grids doivent notamment permettred’integrer de larges proportions d’energie renouvelable intermittente, de stockage et devehicules electriques, ainsi que donner aux consommateurs plus de controle sur leur consommationenergetique. L’atteinte de ces objectifs repose sur l’adoption de nombreusestechnologies, et en particulier des technologies de l’information et de la communication.Ces changements transforment les reseaux en des systemes de plus en plus complexes,necessitant des outils adaptes pour modeliser, controler et simuler leur comportement.Dans cette these, l’utilisation des systemes multi-agents (SMA) permet une approchesystemique de la gestion de l’energie, ainsi que la definition d’architectures et d’algorithmesbeneficiant des proprietes des SMA. Cette approche permet de prendre en compte lacomplexite d’un tel systeme cyber-physique, en integrant de multiples aspects commele reseau en lui-meme, les infrastructures de communication, les marches ou encore lecomportement des utilisateurs. L’approche est mise en valeur a travers deux applications.Dans une premiere application, un systeme de gestion de l’energie pour centrales aturbines a gaz est concu avec l’objectif de minimiser les couts de fonctionnement et lesemissions de gaz a effet de serre pour des profils de charge variables. Un modele de turbinea gaz base sur des donnees reelles est propose et utilise dans un simulateur specifiquementdeveloppe. Une metaheuristique optimise dynamiquement le dispatching entre les turbinesen fonction de leurs caracteristiques propres. Les resultats montrent que le systemeest capable d’atteindre ses objectifs initiaux. Les besoins en puissance de calcul et encommunication sont egalement evalues.Avec d’autres mesures de gestion de la demande, l’effacement diffus permet de reduiretemporairement la charge electrique, par exemple dans la cas d’une congestion du reseaude transport. Dans cette seconde application, un systeme d’effacement diffus est proposeet utilise les ressources disponibles chez les particuliers (vehicules electriques, climatisation,chauffe-eau) pour maintenir la demande sous une valeur limite. Des aggregateursde capacite de reduction de charge servent d’interface entre les operateurs du reseau etun marche de l’effacement. Un simulateur est egalement developpe pour evaluer la performancedu systeme. Les resultats de simulations montrent que le systeme reussit aatteindre ses objectifs sans compromettre la stabilite du reseau de distribution en regimecontinu.
Later Onset of Hypertension Increased the Risk of Dementia in Mild Cognitive Impairment

Objective To investigate the effect of hypertension development on the progression of MCI for middle aged and elderly people. Methods A population-based longitudinal cognition survey of people aged 55+ was conducted. The hypertension onset age was estimated by self-reported information and medical insurance card records. In order to study the effect of later onset of hypertension on dementia, the incidence of dementia was compared between the two groups. Results A total of 277 h ypertensive mild cognitive impairment (MCI) participants without dementia were followed for 6 years. Overall, 56 MCI participants (20.22%) progressed to dementia (MCIp). The proportion of MCIp participants in the old-age onset hypertension group (≥ 65 years) was higher than that of middle-age onset one (27.0% vs 15.4%; X 2 = 5.538, P = 0.019). And in the old-age onset hypertension group, the proportion of MCIp without diabetes mellitus was higher than those with diabetes mellitus (24.7% vs 12.6%; X 2 = 5.321, P = 0.021), and the proportion of MCIp with increased pulse pressure was higher than those without increased pulse pressure (33.3% vs 15.4%; X 2 = 3.902, P = 0.048). However, the multivariate logistic regression analysis showed that older age was the only risk for MCIp (OR=0.732, p=0.029). Conclusions These results suggest that, later onset hypertension was harmful to cognition even in cases where the level of blood pressure maintained at 130/80 mmHg with antihypertensive management.