Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysis of physical human-robot interaction for motor learning with physical help

In this paper we investigate physical human-robot interaction (PHRI) as an important extension of traditional HRI research. The aim of this research is to develop a humanoid robot that can work in the same spaces as humans. We first propose a new control system that takes advantage of inherent joint flexibility. The control system is applied on a new humanoid robot called CB2. In order to clarify the difference between successful and unsuccesful interaction, we conduct an experiment where a human subject has to help the CB2 robot in its rising-up behavior. We also develop a new measure that reveals the difference between smooth and nonsmooth physical interactions. An analysis of the experimentpsilas data, based on the introduced measure, shows significant differences between experts and beginners in human-robot interaction. Consequently, we assume that this measure can be used in the evaluation method required for a motor learning system that uses physical help from a human helper.
Broadrange L-probe reflectarray

A new reflectarray is designed using two co-joined L-shaped probes. In this case, the horizontal lengths of the two L-shaped probes are functioning as the phase-shifters. The unit element is simulated using the Floquet cell, and simulation shows that the unit element is able to provide a linear phase range of 454.2°. A full-fledge reflectarray consisting of 121 elements is designed, fabricated, and measured. The proposed reflectarray is able to achieve an antenna gain of 20.43dBi and a −1dB gain bandwidth of 15.38%.
Triple flame: Inherent asymmetries and pentasectional character

A two-dimensional triple-flame numerical model of a laminar combustion process reflects flame asymmetric structural features that other analytical models do not generate. It reveals the pentasectional character of the triple flame, composed of the central pure diffusion-flame branch and the fuel-rich and fuel-lean branches, each of which is divided into two sections: a near-stoichiometric section and a previously unreported near-flammability-limits section with combined diffusion and premixed character. Results include propagation velocity, fuel and oxidiser mass fractions, temperature and reaction rates. Realistic stoichiometric ratios and reaction orders match experimental planar flame characteristics. Constant density, a one-step reaction, and a mixture fraction gradient at the inlet as the simulation parameter are imposed. The upstream equivalence ratio or the upstream reactant mass fractions are linear or hyperbolic functions of the transverse coordinate. The use here of experimental kinetics data differs from previous analytical works and results in flame asymmetry and different flammability limits. Upstream mixture composition gradient affects propagation velocity, flame curvature, diffusion flame reaction rate, and flammability limits. Flammability limits extend beyond those of a planar flame due to transverse heat and mass diffusion causing the pentasectional character.
Quarkmassen in der vollen QCD

Die Massen der leichten Quarks sind fundamentale Parameter der Quantenchromodynamik (QCD), der Theorie der starken Wechselwirkung. Aus der Einsicht, dass freie Quarks nicht beobachtet werden konnen (confinement), folgt unmittelbar, dass es unmoglich ist, deren Masse direkt zu bestimmen. Stattdessen muss die Abhangigkeit beobachtbarer Grosen von den Quarkmassen bestimmt werden, um anschliesend durch Vergleich mit physikalischen Resultaten die physikalischen Quarkmassen zu bestimmen. Der einzig bekannte Zugang zur absoluten Grose der leichten Quarkmassen ist die Berechnung der QCD auf dem Gitter. Alle anderen Ansatze konnen entweder die absolute Grose nicht bestimmen (wie etwa die chirale Storungstheorie, die nur Massenverhaltnisse liefert) oder verwenden Naherungen, deren Auswirkungen nicht kontrolliert werden konnen. Die Arbeit prasentiert neue Resultate zur Masse des leichten und des strange Quarks der SESAM/TχL Kollaboration. Sie wurden auf Gittern der Grose 163 x 32 bzw. 243 x 40 berechnet, was die Beobachtung von finite-size Effekten ermoglicht. Da die SESAM/TχL Ensembles mit β=5.6 mittlerweile durch Konfigurationen mit β=5.5 erganzt wurden ist es auserdem moglich, die erste Kontinuumsextrapolation der Quarkmassen mit standard Wilson-Fermionen durchzufuhren. Im zweiten Teil der Arbeit wird ein mehr technischer Aspekt der Gitter-QCD Simulationen behandelt. Die zentrale numerische Aufgabe bei Berechnungen in der vollen QCD ist die Losung groser, dunn besetzter linearer Gleichungssysteme auf Parallelrechnern. Neben der Wahl des richtigen Gleichungslosers spielt bei der Verbesserung dieser Aufgabe vor allem die Optimierung des Prakonditionierungsschemas eine wesentliche Rolle. Im Rahmen dieser Arbeit werden dazu durch ll-SSOR Prakonditionierung erzielte Ergebnisse fur O (a)-verbesserte Fermionen prasentiert. Es wird gezeigt, dass der de facto Standard heutiger Simulationen, even-odd Prakonditionierung, um mehr als einen Faktor zwei geschlagen wird. Daruberhinaus wird das ll-SSOR Prakonditionierungschema auf hyperkubische Fermionen angewendet, einem neueren, durch perfekte Wirkungen inspirierten Ansatz.
Naming and synchronization in a decentralized computer system

In this dissertation a new approach to the synchronization of accesses to shared data objects is developed. Traditional approaches to the synchronization problems of shared data accessed by concurrently running computations have relied on mutual exclusion -- the ability of one computation to stop the execution of other computations that might access or change shared data accessed by that computation. Our approach is quite different. We regard an object that is modifiable as a sequence of immutable versions; each version is the state of the object after an update is made to the object. Synchronization can then be treated as a mechanism for naming versions to be read and for defining where in the sequence of versions the version resulting from some update should be placed. In systems based on mutual exclusion, the timing of accesses selects the versions accessed. In the system developed here, called NAMOS, versions have two component names consisting of the name of an object and a pseudo-time, the name of the system state to which the version belongs. By giving programs control over the pseudo-time in which an access is made, synchronization of access to multiple objects is simplified. NAMOS is intended to be used in an environment where unreliable components, such as communication lines and processors, and autonomous control of resources occasionally cause certain objects to become inaccessible, perhaps in the middle of an atomic transaction. Computations may also suddenly halt (perhaps as the result of a system crash) never to be restarted. NAMOS provides facilities for recovering from such sudden failures, grouping updates into sets called possibilities, such that failure of any update belonging to a possibility prevents all of the other updates in the possibility. The naming mechanism of NAMOS also provides a useful tool for restoring a consistent state of the system after a failure resulting in irrecoverable loss of information or a user mistake resulting in an inconsistent state. An important motivation for the development of NAMOS is the need to support decentralized development of application systems by combining existing application systems that deal with shared data. NAMOS supports the construction of modules that locally ensure their own correct synchronization and recovery from inaccessibility. Larger modules that use several separately designed modules can then be constructed, perhaps with additional synchronization constraints, without modifying the modules used. In most systems based on mutual exclusion, such post hoc integration of modules is difficult or impossible.
E-Government, E-Business, and National Economic Performance

Recent years have witnessed rapid developments in e-government as well as e-business within nations across the world. Although both e-government and e-business contribute toward national economic performance, few studies have analyzed the two jointly in a single research model. Using the Technology-Organization-Environment (TOE) framework and the literature on information and communication technology (ICT) impact; we empirically examine facilitators of e-government and e-business development, the relationship between e-government and e-business, and their collective impact on national economic performance. Our results, which emphasize the differential importance of factors associated with the development of e-government and e-business, can be used by national policy makers for designing effective ICT policies. Specifically, national ICT infrastructure appears to be important for both e-government and e-business. Quality of national human capital emerges as a significant facilitator for e-government but not for e-business, whereas national environment (institutional and macro-economic) appears to be the key enabler for e-business, but not for e-government. Our findings demonstrate the significant and intertwined roles of e-government and e-business in enhancing the national economic performance. With a view to enhancing national economic gains, this research suggests that policy makers should consider measures to enhance development of e-government and e-business collectively rather than in silos.
Nosocomial Infections With Ceftazidime-Resistant Pseudomonas aeruginosa: Risk Factors and Outcome

Abstract Prospective studies were conducted for nosocomial Pseudomonas aeruginosa infections from February 1, 1994, to October 30,1995. Of 97 P aeruginosa isolates from 97 patients, 35 were resistant to ceftazidime. Logistic regression revealed previous cephalosporin or piperacillin use as independent risk factors for nosocomial ceftazidime-resistant P aeruginosa infection. Pulsed-field gel electrophoresis revealed that four nosocomial ceftazidime-resistant P aeruginosa infections were caused by cross-infection, probably through medical personnel.
Butterfly effect: an augmented reality puzzle game

Butterfly effect is a 3D puzzle game using augmented reality. The key motivation was to create a game that leverages the structure of the physical world during gameplay without requiring the computer to have a detailed model of the space. The butterflies are virtual, but the space the player navigates is physical. The player travels her environment, collecting the butterflies. For butterflies that are out of reach, the player can rotate the virtual world in 90 degree chunks about an arbitrary axis to bring them to an accessible location.
Ordonnanceurs hiérarchiques adaptables

Les systemes d'exploitation a temps partage offrent a l'utilisateur un confort d'utilisation en permettant de simuler l'execution simultanee de plusieurs programmes. Pour cela le systeme traite equitablement et a tour de role chacune des tâches pendant un quantum de temps defini. L'inconvenient est que l'utilisateur peut executer differentes categories de programmes ne reposant pas sur les memes criteres. Les applications multimedias, comme la lecture d'un fichier video, peuvent souffrir de cette equite des lors qu'un certain nombre de programmes s'executent. Lorsqu'elles ne possedent pas les ressources suffisantes elles deviennent inutilisables : les images ne sont plus synchronisees avec la bande son et l'affichage devient saccade. Cependant, toutes les applications ne necessitent pas de contraintes temporelles et, par exemple, les traitements de donnees ne sont pas alteres si les resultats sont produits avec du retard. Nous presentons nos travaux sur la plate forme MVV-Bossa qui fournit a l'utilisateur un moyen de casser l'equite entre les differentes tâches et donc lui permet de mettre l'accent sur l'execution d'un programme particulier pour obtenir la qualite de service qu'il desire.
Forum post classification to support forensic investigations of illegal trade on the Dark Web Research Project 2

Cybercrime is facilitated by the multitude of Internet services. It is a flourishing field which affects governments, businesses and citizens that are using the Internet as a service. Cybercriminals take advantage of Internet features, such as anonymity and encryption, to commit illegal acts. Consequently, it is important for law enforcement authorities to have at their disposal intelligent tools that would support them in investigations. This research aims to provide forensic analysts a quick way to determine the topics currently being discussed in the underground marketplace forums. To achieve this, we investigated if it is feasible to exploit semantic word representations in order to build a classifier. With time being a limited resource in many forensic cases, we aimed to boost the training process of the classifier, as it involves labour intensive annotation work. For this purpose we made use of Word2Vec a state of the art technique. We proceeded on evaluating the classifier and the training model by determining their accuracy. For these tasks, methods such as Cosine Similarity and Support Vector Machines were employed. The results are discussed and solutions are proposed in order to improve the process.
Synthetic chelating agents in iron metabolism.

Iron in man is held within the cells incorporated in organic complex molecules, either as functional iron, i.e., hemoglobin and tissue enzymes, or as storage iron, i.e., ferritin and hemosiderin. Owing to the requirements of the erythroid marrow in particular, large amounts of iron must constantly pass from one cell to another through the plasma. This plasma transport is brought about by a #3globulin transferrin, which handles iron in a highly selective fashion, removing it from donor tissues such as the reticuloendothelial cells and releasing it to those tissues which have a need for iron. It is likely that this direction of motion is accomplished by the relative affinity of individual cellular receptors for iron as compared to that of transferrin. Thus weaker receptors yield iron to transferrin and stronger receptors assimilate it. Recently, powerful chelating agents have been developed which may participate in tissue iron exchange (1-10). Such chelates have been shown to compete in vitro with transferrin for iron (5, 6). They have also been shown to mobilize iron from body tissues when injected parenterally (3, 4). It is the aim of the present study to investigate the effects of this competitive binding of chelates in reactions of iron transport. The observations made further define the mode of action of these compounds on intermediate iron metabolism and indicate their usefulness in the treatment of acute or chronic iron overload.
Generalization Bound for Multi-Classification with Push

Solving multi-classification problems has been improved by overcoming the limit of conventional statistical methods supported by development of artificial intelligence methods. The derived bound provides a means to evaluate clustering solutions in terms of the generalization power of a built-on classifier. For classification based on a single feature the bound serves to find a globally optimal classification rule. Comparison of the generalization power of individual features can then be used for feature ranking. In this paper we take multi-classification as push the sample on the top of the list, to different class, and derive a generalization bound for multi-classification by using covering number to provide a specific type of conclusion.
SMAFramework: Urban Data Integration Framework for Mobility Analysis in Smart Cities

Smart cities emerge in computer science as a topic to cover how the technology of information and communication can be used in the urban centers to monitor its dynamics and allow the improvement of services for the citizens. In these urban centers, different methodologies are used in order to collect data and provide them to applications. These data come from several heterogeneous sources, thus there is an effort to integrate and standardize them before their use. Also, a significant amount of this data has spatio-temporal annotations, which may be used to analyze the city dynamics, such as the mobility flow. Due to these characteristics of the data generated in urban centers, and also the possibilities brought by their use and analyses, this work presents a novel approach to collect, integrate and perform some analysis tasks in mobility data from smart cities. Thus, the SMAFramework can analyze mobility patterns based on a Multi-Aspect Graph (MAG) data structure. To show the potential of the framework, it is proposed a method to analyze the saptio-temporal correlation between data from two different data sources in the same city. Real data collected from social media and a taxi system of the city of New York are used to evaluate this method. The obtained results allowed to understand some of the applicabilities of the framework and also provided some insights on how to use the framework to resolve specific problems when analyzing mobility in urban environments.
All-path bridging: Path exploration as an efficient alternative to path computation in bridging standards

Link-state based routing protocols are dominant in Shortest Path Bridges (IEEE 802.1aq) and also at TRILL (IETF) Rbridges. Both standards propose a hybrid of switch and router adding a link state routing protocol in layer two that computes shortest paths between bridges. Surprisingly, path exploration mechanisms have not yet been considered at standardization bodies, in spite of some outstanding advantages: simplicity, instantaneous path adaptation to traffic load with load adaptive routing and low latency. We have developed All-path, a family of protocols based on simple path exploration mechanisms based on full flooding of a single frame, as an alternative to the “beaten trail” of path computation. Path exploration (either instantaneous or periodical, proactive or reactive) is an efficient alternative to path computation for bridged networks because the processing cost of address learning at bridges from broadcast frames is very low and Ethernet links provide very high link capacity so that the extra packet broadcasts do not impact load significantly. Standardization groups should consider the application of path exploration (instantaneous or periodical, proactive or reactive) mechanisms in Audio Video Bridges and in generic bridging networks like campus and data centers to find redundant paths, low latency and load distribution in simple ways instead of complex multiple path computations.
Price Premiums from the Oklahoma Quality Beef Network — 2001-2003

The Oklahoma Quality Beef Network (OQBN) is a program, which began in 2001, and is sponsored by the Oklahoma Cattlemen’s Association. OQBN is a process verification and certification program for preconditioning calves. Preconditioning programs are designed to reduce stress from shipping calves at weaning, improve calves’ immune system, and boost performance in post-weaning production phases (stocker production and cattle feeding) and carcass performance (higher grading carcasses with fewer defects). Visit http://osuextra.okstate. edu/ for information on preconditioning, and also visit the Oklahoma Cattlemen’s Association Web site at http://www.okcattlemen. org/OQBN%20Home. htm for specific information on several aspects of the OQBN program. One frequently asked question regarding preconditioning and the OQBN in particular is whether or not buyers pay a premium for OQBN calves. This extension fact sheet reports on research at OSU to estimate price premiums for the first thee years of the OQBN program (Ratcliff).
Information flow analysis for mobile code in dynamic security environments

With the growing amount of data handled by Internet-enabled mobile devices, the task of preventing software from leaking confidential information is becoming increasingly important. At the same time, mobile applications are typically executed on different devices whose users have varying requirements for the privacy of their data. Users should be able to define their personal information security settings, and they should get a reliable assurance that the installed software respects these settings. Language-based information flow security focuses on the analysis of programs to determine information flows among accessed data resources of different security levels, and to verify and formally certify that these flows follow a given policy. In the mobile code scenario, however, both the dynamic aspect of the security environment and the fact that mobile software is distributed as bytecode pose a challenge for existing static analysis approaches. This thesis presents a language-based mechanism to certify information flow security in the presence of dynamic environments. An object-oriented high-level language as well as a bytecode language are equipped with facilities to inspect user-defined information flow security settings at runtime. This way, the software developer can create privacy-aware programs that can adapt their behaviour to arbitrary security environments, a property that is formalized as "universal noninterference". This property is statically verified by an information flow type system that uses restrictive forms of dependent types to judge abstractly on the concrete security policy that is effective at runtime. To verify compiled bytecode programs, a low-level version of the type system is presented that works on an intermediate code representation in which the original program structure is partially restored. Rigorous soundness proofs and a type-preserving compilation enable the generation of certified bytecode programs in the style of proof-carrying code. To show the practical feasibility of the approach, the system is implemented and demonstrated on a concrete application scenario, where personal data are sent from a mobile device to a server on the Internet.
Hypertonic Saline Decreases Ciliary Movement in Human Nasal Epithelium in Vitro

Various saline solution formulae are frequently used in patients with rhinosinusitis. Osmolarity affects ciliary beat frequency (CBF); however, little is known about the effects of saline solutions on ciliary activity of nasal epithelial cells. The aim of this study was to assess whether CBF of normal turbinate mucosa is affected by hypertonic, isotonic, or hypotonic saline solution in vitro and whether histologic changes are associated with the alteration of ciliary movement. We assessed variations of CBF after exposure to 0.06%, 0.12%, 0.9%, 3.0%, or 7.0% saline solutions and histologic changes were examined by transmission electron microscopy. Isotonic and hypotonic solutions produced no ciliary slowing; however, ciliostasis was observed within a few minutes in 3.0% or 7.0% solution. The histologic changes demonstrated that the ciliary slowing might be attributed to epithelial damage by fluid transport toward the surrounding medium. In conclusion, hypertonic saline solutions decrease CBF and disrupt nasal epithelial cells in vitro.