Miracle-dz/UniFAR-FTUs huggingface dataset:
Precipitation and characterization of arsenate phases from Ca(II)-Cu(II)-Fe(III)-As04-S04 hydrothermal systems

The scope of this thesis is the study of three Fe(III)-As(V) hydrothermal systems. The first one is the Fe(III)-AsO4-SO4 system and crystalline phases that are produced under high temperature (150-225°C); this was studied to clear up previous contradicting information on this system in relation to industrial arsenic products that are formed during the autoclave processing of arsenical sulphide gold feedstocks and asses their arsenic stability. The second system studied was Cu(II)-Fe(III)-AsO4-SO4 system at 150°C; this was investigated due to its relevance to industrial pressure leaching of copper concentrates. This system was studied in order to examine the possible effect of copper on the precipitation of scorodite. Finally, the structural and molecular examination of two members of the Ca(II)-Fe(III)-AsO4 system, namely yukonite (synthetic and natural and arseniosiderite was undertaken due to their relatively unknown nature and the potential role play in controlling arsenic release in tailings.%%%%La portee de cette these comprend l'etude de trois systemes hydrothermiques Fe(III)-As(V). Le premier systeme est compose de Fe(III)-AsO4-SO4 et les phases cristallines qui sont produites a haute temperature (150-225°C) ; celle-ci a ete etudie pour elucider l'information precedente contradictoire sur ce systeme par rapport aux produits arsenicaux industriels qui sont formes pendant le traitement en autoclave de minerais aurifere arsenicaux sulfure et de la stabilite des produits arsenicaux. Le deuxieme systeme etudie etait de Cu(II)-Mg(II)-Fe(III)-AsO4-SO4 a 150°C. Ce systeme a ete etudie due a son importance dan la lixiviation industrielle du cuivre et afin d'examiner l'effet du cuivre sur la precipitation de scorodite. Finalement, l'examen structural et moleculaire de deux membres de la famille des systemes Ca(II)-Fe(III)-AsO4 et yukonite (synthetique, naturel et arseniosiderite), ont etes observes en raison de leur nature relativement inconnue et de leur potentiel pour controler le degagement d'arsenic dans les residu
RESILIENT FEATURES OF ORGANIZATIONAL CULTURE IN IMPLEMENTATION OF SMART CONTRACT TECHNOLOGY BLOCKCHAIN IN IRAQI GAS AND OIL COMPANIES

The study objectives implementation of smart contract technology and its impact on individual, environmental and organizational factors, particularly considering the moderating effect of organizational culture. Consequently, to fill this research gap, this study extends the concepts of implementation of smart contract technology by investigating an original conceptual framework. This conceptual framework is subjected to empirical testing, implemented through 361 employees who met the population inclusion criteria set forth in this study in gas and oil companies in Iraq. Data is collected through a self-administration questionnaire and analyzed through structural equation modeling (PLS). The results suggest that: (1) sustainable performance by developing a smart contract and secure contracts; (2) organizational culture has a partially significant positive moderating effect; (3)the country achieves economic profits and companies can achieve long-term goals and a competitive advantage in the business environment and achieve sustainability.
2 XMark : a benchmark for XML data management

We propose XPathMark, an XPath benchmark for XMark. It consists of a set of queries which covers the main aspects of the language XPath 1.0. These queries have been designed for XML documents generated under XMark, a popular benchmark for XML data management. We suggest a methodology to evaluate the XPath benchmark on a given XML engine and, by way of example, we evaluate two popular XML engines against the proposed benchmark.
Prospects of Applying of Ingo-2 Nanostructured Carbon Sorbent in Cases of Intoxication with Heavy Metals

The active centers of the carbonization of carbon sorbents from vegetable raw materials (rice husks) were altered to purposefully modify the surface of the Ingo-2 nanostructured carbon sorbent. The study revealed a corrective effect of Ingo-2 on the organism of animals experiencing in chronic intoxication with heavy metals. Experimentally, morphological, digital and mathematical assessment of the condition of the mucous membrane of the digestive tract laboratory animals (white rats) in vivo revealed the influence of Ingo-2 on the deposition and the excretion of Cu ++ , Pb ++ ions. This was confirmed by the absence of morphological changes in the experimental animals when administered in the diet over 17 days, with 5вЂ“10 g sorbent Ingo-2 used for the neutralization of 10 mg Pb(NO 3 ) 2 and Cu(NO 3 ) 2 , which represents approximately 0.1 LD50 (Lethal Dose). The methodology of the research established positive effects of these treatment and its quantitative characteristics were defined.
Angewandte Mathematik Und Informatik Universit at Zu K Oln Approximation of Geometric Dispersion Problems

We consider problems of distributing a number of points within a polygonal region P, such that the points are \far away" from each other. Problems of this type have been considered before for the case where the possible locations form a discrete set. Dispersion problems are closely related to packing problems. While Hochbaum and Maass (1985) have given a polynomial time approximation scheme for packing, we show that geometric dispersion problems cannot be approximated arbitrarily well in polynomial time, unless P=NP. We give a 2 3 approximation algorithm for one version of the geometric dispersion problem. This algorithm is strongly polynomial in the size of the input, i. e. , its running time does not depend on the area of P. We also discuss extensions and open problems.
Title : Emergent Group-Level Selection in a Peer-to-Peer Network Short Title : Group Selection in P 2 P

Many peer-to-peer (P2P) applications benefit from node specialisation. For example, the use of supernodes, the semantic clustering of media files or the distribution of different computing tasks among nodes. We describe simulation experiments with a simple selfish re-wiring protocol (SLAC) that can spontaneously self-organise networks into internally specialized groups (or “tribes”). Peers within the tribes pool their specialisms, sharing tasks and working altruistically as a team – or “tribe” even though their individual behaviour is selfish. This approach is scalable, robust and self-organising. These results have implications and applications in many disciplines and areas beyond P2P systems.
TITLE PAGE Title: Predicting future ocular Chlamydia trachomatis infection prevalence using serological, clinical, molecular, and geospatial data

Author affiliations: 1Francis I. Proctor Foundation, University of California, San Francisco, CA 94143; 2The Carter Center Ethiopia, Addis Ababa, Ethiopia; 3Amhara Public Health Institute, Bahir Dar, Ethiopia; 4The Carter Center, Atlanta, Georgia; 5Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, GA 30333; 6Locational, Poole, UK; 7Department of Ophthalmology, University of California, San Francisco, CA 94143; 8Department of Epidemiology and Biostatistics, University of California, San Francisco, CA 94143; 9Institute for Global Health Sciences, University of California, San Francisco, CA 94143;
Ab initio studies of sperrylite, platarsite and palladoarsenide bulk and surface stabilities

In this study we employed the Vienna Ab-initio Simulation Package (VASP) along with the projector augmented wave (PAW) pseudopotential method to investigate the bulk structural and surface stabilities of sperrylite (PtAs2), platarsite (PtAsS) and palladoarsenide (Pd2As) minerals. The phase stability of PtAsS was obtained using UNiversal CLuster Expansion (UNCLE) code. The phonon dispersion curves showed no soft modes for all the structures, suggesting stability. The calculated surface energies indicated that the (100) surface was the most stable amongst the low Miller index (100), (110) and (111) surfaces for PtAs2, PtAsS and Pd2As. The order of surface energies increased as: (100) < (111) < (110) for PtAs2 and PtAsS and (100) < (110) < (111) for Pd2As. The calculated thermodynamically equilibrium morphologies of the relaxed surface structures indicated that the (100) surface was the most dominant for all the studied structures. The findings offer more insight on the stability of these minerals and their surface stability.
CS 6550 – Design and Analysis of Algorithms Professor :

Leighton and Rao use multicommodity flow results to design the first polynomial time approximation algorithms for well known NP-Hard optimization problems. Such problems include graph partitioning, crossing number, VLSI layout, and many more. Furthermore, Leighton and Rao are responsible for establishing the max-flow min-cut theorems on multicommodity flow problems, which lead to the algorithms mentioned above. In this paper we will establish the definitions and lemmas necessary to understand multicommodity flow problems, and we will also present the influential max-flow min-cut theorem by Leighton and Rao.
DEDICATION To my family ii

Advisor Date DEDICATION To my family ii ACKNOWLEDGEMENTS This thesis would not have been possible without the support of many people. First and foremost, I thank God Almighty for his endless blessings he has bestowed upon me. I couldn't stop praising Him for all the good things He has done and brought in my life I must thank my queen and my wife Ola for her endless love and support. You have been my inspiration for all of this. You were always next to me. My love for you is eternal and unconditional. I wish to express my love and gratitude to my beloved parents Nazem Rawshdeh and Najah Al-Masri. Without you non of this could have been possible. To my brothers Dr. Bilal and Mohammad Rawshdeh, thanks for all of your support and encouragement. To my beloved sister Dr. Sarah Rawshdeh, thanks for your kind words and prayers. You have always encouraged me to do my best. God could not have blessed me with a better family. To my parents in law, Jameel and Bassema, and their family, thanks all for your support. I would like to thank my advisor, Prof. Abi-Antoun for his invaluable advice that walked me all the way long to finish this thesis. Thanks for the pair reviewing and for returning my drafts as soon as possible just so I could make it to the deadline. Indeed without your support this thesis would not have been possible. I'm also thankful to Dr. Marcus and Dr. Fisher, my thesis committee, for your guidance and comments. Any remaining faults in this thesis are mine alone. Finally, I would like to thank my best friends who have become brothers to me over the years. Special thanks to Dr. Mohammad Albanna and Mahmoud Najeh. I could not list all my wonderful friends, but I would like to thank you all.
Intergenerational Contracts and Female Labor Supply

This article examines how intergenerational relationships between parents and grandparents a¤ect females labor supply. I develop a nonaltruistic dynamic contract model using economic bene ts such as a bequest, coinsurance, and cheaper care service to sustain such relationships in the face of long-term incentive problems. I then estimate the parameters of the model using Chinese household surveys. I evaluate the labor and income reallocation e¤ect throughout the relationships. I nd that intergenerational relationships increase the labor supply of younger females by 32% but reduce the labor supply of older females by 21%, while increasing older femaleshousehold savings by 13%. My policy experiments produce the following predictions: delaying retirement age reduces the labor supply of young females; raising inheritance taxes increases the labor supply of young females and savings of both parents and grandparents. Therefore, I nd that a public policy a¤ects the households attached to the target group through intergenerational relationships.
Effect of a Lewis Acid Catalyst on the Performance of HDPE/BFR/GNPs Composites

Brominated flame-retardant high-density polyethylene (HDPE) composites containing graphene nanoplatelets (GNPs) were prepared via melt blending. A Lewis acid catalyst, aluminum chloride (AlCl3), was adopted to initiate the Friedel–Crafts reaction, which contributed to the good dispersion of GNPs and improvement of interfacial interaction. Scanning electron microscopy (SEM) showed that the size of GNPs decreased and the dispersive state of GNPs was improved with the addition of AlCl3. The maximum decomposition temperature (Tmax), modulus, and viscosity increased as the catalyst content increased, whereas the peak heat release rate (PHRR) and the total heat release (THR) decreased with increasing catalyst content. However, gel permeation chromatography (GPC) verified the degradation for HDPE at high catalyst concentration, and then thermal oxidation stability and flame retardancy worsen. The variety of performance of the composites was the result of the competition between improving the dispersion and degra.
Game-theoretic Model of Trust to Infer Human’s Observation Strategy of Robot Behavior

—In scenarios where a robot generates and executes a plan, there may be instances where this generated plan is less costly for the robot to execute but incomprehensible to the human. When the human acts as a supervisor and is held accountable for the robot’s plan, the human may be at a higher risk if the incomprehensible behavior is deemed to be infeasible or unsafe. In such cases, the robot, who may be unaware of the human’s exact expectations, may choose to execute (1) the most constrained plan (i.e. one preferred by all possible supervisors) incurring the added cost of executing highly sub-optimal behavior when the human is monitoring it and (2) deviate to a more optimal plan when the human looks away. While robots do not have human-like ulterior motives (such as being lazy), such behavior may occur because the robot has to cater to the needs of different human supervisors. In such settings, the robot, being a rational agent, may take any chance it gets to deviate to a lower cost plan. On the other hand, continuous monitoring of the robot’s behavior is often difﬁcult for humans because it costs them valuable resources (e.g., time, cognitive overload, etc.). Thus, to optimize the cost for monitoring while ensuring the robots follow the safe behavior and to assist the human to deal with the possible unsafe robots, we model this problem in the game-theoretic framework of trust. In settings where the human does not initially trust the robot, pure-strategy Nash Equilibrium provides a useful policy for the human. In our setting, the formulated game often lacks a pure strategy Nash equilibrium. Thus, we deﬁne the concept of a trust boundary over the mixed strategy space of the human and show how it helps to discover monitoring strategies that ensure the robot adheres to safe behavior and achieves the goal. With the help of human studies and task-planning scenarios, we
Effect of Fe-doped TiO2 photocatalysts on the degradation of acid orange 7

ABSTRACT The purpose of the research was to determine the photocatalytic degradation efficiency of acid orange 7 (AO7) using 2 mol% Fe-doped TiO2 as photocatalysts under UV irradiation. Fe-doped TiO2 powder synthesized by solid-reaction technique reveals the average particle size of 0.91 μm, BET surface area of 11.6 m2/g, a wide pore-size distribution with the average pore diameter of 3.2 nm and pore volume of 0.035 cm3/g. Within the experiment, AO7 was prepared as a synthetic textile wastewater at the initial concentration of 34 mg/L along with using various doses of Fe-doped TiO2 photocatalysts. The results indicated that Fe-doped TiO2 with dose of 0.100 g in 100 mL of AO7 reached the highest removal efficiency about 88.7%.
Kinetics of α-Methylstyrene Hydrogenation on Pd/Al2O3

Analysis of the literature on α-methylstyrene (AMS) hydrogenation reveals very large variations in the reported reaction rates. The presence of traces of water and mass-transfer limitations make reproducible intrinsic kinetic determination difficult. Under anhydrous conditions, the intrinsic kinetic law was, nevertheless, determined under a wide range of operating conditions: 0.5−100 wt % AMS, 0.1−0.6 MPa, 273−320 K, with an activation energy of 38.7 ± 1.5 kJ·mol-1.
Using an Arabic ontology to improve the Q/A task

Users in an open environment such as the Web need advanced tools which make easier the access to the information. Question/Answering systems are new types of Information Retrieval (IR) systems. They reduce the effort to be done by users when searching for a precise answer to a question instead of a set of documents. In this paper, we describe our project of improving the Arabic Q/A task by using ontologies in the semantic Query Expansion ( QE ) approach that we propose. We present the steps that we followed in the preparation of our semantic resource and the experiments related to the evaluation stage as well.
Up-Regulation of CD 44 v 6 in Melanoma Cells through Egr-1 Hepatocyte Growth Factor / Scatter Factor Induces Feedback

The hepatocyte growth factor/scatter factor (HGF/SF) receptor c-Met and variants of the CD44 family of surface adhesion molecules, including CD44v6, have been implicated in cancer progression and metastasis. CD44 isoforms bearing heparin sulfate chains can bind to HGF/SF and facilitate its presentation to c-Met. Here, we demonstrate that HGF/SFMet binding up-regulates the expression of CD44v6 in murine melanoma cells, serving to compensate for loss by internalization. c-Met-mediated CD44v6 up-regulation was achieved through transcriptional activation of the immediate early gene egr-1. Enhanced egr-1 expression was apparent at the level of RNA 40 min after exposure to HGF/SF, and Egr-1 protein was detectable between 1 and 2 h post-treatment. CD44v6 RNA levels were correspondingly elevated 2 h after HGF/SF exposure. HGF/SF induced egr-1 activation via the Ras>Erk1/2 pathway but not through either phosphatidylinositol 3 -kinase or protein kinase C. Binding of NK2, a naturally occurring splice variant of HGF/SF, to c-Met failed to induce either Egr-1 or CD44v6, accounting at least in part for its antagonistic behavior. We also identified an Egr-1-binding site in the mouse CD44 gene promoter that accounts for its responsiveness to HGF/SF in melanoma cells. The compensatory up-regulation of both c-Met and CD44v6 in response to HGF/SF has important implications with respect to strategies used by cancer cells to sustain stimulation of growthand metastasispromoting pathways associated with tumor progression.
Mathematisches Forschungsinstitut Oberwolfach Wavelet and Multiscale Methods Workshop: Wavelet and Multiscale Methods Table of Contents Ingrid Daubechies (joint with Cynthia Rudin and Rob Schapire) Combining Multiresolution Technique with a Semi–implicit Scheme for Endre Süli (joint with Abstracts A

A central objective was to bring together leading researchers working in a variety of different areas where multiscale phenomena play an intrinsic role regarding the theoretical understanding of the problems as well as the numerical solution concepts. This meeting was well attended with over 45 participants with a broad geographic representation from all continents. With only very few exceptions, the most prominent representers of the respective fields participated in the workshop. The main link being multiscale concepts, the overall audience was certainly less homogeneous than in most other workshops. In order to provide a solid ground for discussions and synergies, thirteen of the twenty six talks were longer survey–style lectures by leading experts who had been contacted by the organizers prior to the meeting. The following topics were addressed in the survey–type lectures: • Adaptive and multiscale methods for integral equations and PDEs; • problems of high spatial dimension; • quasi-sparse representation of global operators and hierarchical matrices; • nonlinear multiresolution techniques and new libraries for image analysis and compression; • highly localized multiscale representations on the sphere; • multiscale approaches for inverse problems; 1790 Oberwolfach Report 34/2004 • mathematical learning theory and statistics. Several adaptive wavelet schemes for fluid flow problems were presented with varying emphasis on analysis and numerical realization. This included combinations of statistical and multiresolution concepts for understanding turbulence. Such approaches were complemented by a " two-scale " point of view where the concept of " residual free bubbles " allows one to model the influence of unresolved scales to the resolved ones, initiating vivid discussions about a possible combination of these approaches. From the perspective of nonlinear approximation, best N-term approximation in corresponding anisotropic function spaces was discussed , which is another important component in adaptive solution concepts in this context. Another focal point was the quasi–sparse or data–sparse representation of global operators, for instance, via wavelet bases or through concepts like hierarchical matrices. On one hand, this was shown to lead to new shape–optimization techniques as well as to significant advancements of adaptive wavelet methods for boundary integral equations. On the other hand, hierarchical matrix concepts were seen to make extremely high dimensional problems of a certain separable structure numerically tractable. In fact, problems of high spatial dimension were treated in the context of quantum chemistry centering upon the solution of the Schrödinger equation for many particles as one of the grand challenges of …