cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Impact Assessment and Multicriteria Decision Analysis of Alternative Managed Aquifer Recharge Strategies Based on Treated Wastewater in Northern Gaza
Creators: name: Rahman, Mohammad
name: Rusteberg, Bernd
name: Uddin, Mohammad
name: Saada, Muath
name: Rabi, Ayman
name: Sauter, Martin
Publisher: name: Basel : MDPI AG
Year: 2014
Subjects: subject: managed aquifer recharge
subject: impact assessment
subject: wastewater reuse
subject: decision support
subject: multicriteria analysis
subject: Northern Gaza
subject: Grundwasseranreicherung
subject: Folgenabschätzung
subject: Abwasser
subject: Wiederverwendung
subject: Aufbereitung
subject: Entscheidungshilfe
subject: Mehrkriterienanalyse
subject: Multikriterienanalyse
subject: Nord-Gaza
subject: Nordgaza
subject: Grundwasseranreicherung
subject: Bewertung
subject: Abwasseraufbereitung
subject: Abwasserverwertung
subject: Entscheidungsunterstützung
subject: Multikriteria-Entscheidung
subject: Gaza
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: For better planning of a managed aquifer recharge (MAR) project, the most promising strategies should analyze the environmental impact, socio-economic efficiency, and their contribution to the existing or future water resource conditions in the region. The challenge of such studies is to combine and quantify a wide range of criteria from the environment and society. This necessity leads to an integrated concept and analysis. This paper outlines an integrated approach considering environmental, health, social and economic aspects to support in the decision-making process to implement a managed aquifer recharge project as a potential response to water resource problems. In order to demonstrate the approach in detail, this paper analysed several water resources management strategies based on MAR implementation, by using treated wastewater in the Northern Gaza Strip and the potential impacts of the strategies on groundwater resources, agriculture, environment, health, economy and society. Based on the Palestinian water policy (Year 2005–2025) on wastewater reuse, three MAR strategies were developed in close cooperation with the local decision makers. The strategies were compared with a base line strategy referred to as the so-called “Do Nothing Approach”. The results of the study show that MAR project implementation with treated wastewater at a maximum rate, considered together with sustainable development of groundwater, is the best and most robust strategy amongst those analyzed. The analysis shows the defined MAR strategies contribute to water resources development and environmental protection or improvement including an existing eutrophic lake. The integrated approach used in this paper may be applicable not only to MAR project implementation but also to other water resources and environmental development projects.
Eye-GUIDE (Eye-Gaze User Interface Design) Messaging for Physically-Impaired People
Creators: name: Anacan, Rommel
name: Alcayde, James Greggory
name: Antegra, Retchel
name: Luna, Leah
Publisher: name: arXiv
Year: 2013
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Eye-GUIDE is an assistive communication tool designed for the paralyzed or physically impaired people who were unable to move parts of their bodies especially people whose communications are limited only to eye movements. The prototype consists of a camera and a computer. Camera captures images then it will be send to the computer, where the computer will be the one to interpret the data. Thus, Eye-GUIDE focuses on camera-based gaze tracking. The proponent designed the prototype to perform simple tasks and provides graphical user interface in order the paralyzed or physically impaired person can easily use it.
Generalized minimum dominating set and application in automatic text summarization
Creators: name: Xu, Yi-Zhi
name: Zhou, Hai-Jun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Retrieval (cs.IR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computation and Language (cs.CL)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: For a graph formed by vertices and weighted edges, a generalized minimum dominating set (MDS) is a vertex set of smallest cardinality such that the summed weight of edges from each outside vertex to vertices in this set is equal to or larger than certain threshold value. This generalized MDS problem reduces to the conventional MDS problem in the limiting case of all the edge weights being equal to the threshold value. We treat the generalized MDS problem in the present paper by a replica-symmetric spin glass theory and derive a set of belief-propagation equations. As a practical application we consider the problem of extracting a set of sentences that best summarize a given input text document. We carry out a preliminary test of the statistical physics-inspired method to this automatic text summarization problem.
description: 11 pages, including 4 figures and 2 tables. To be published in Journal of Physics: Conference Series
OPTIMAL SOFTWARE RELIABILITY PREDICTION USING CRITERIA WEIGHTS UNDER FUZZY DECISIONMAKING APPROACH
Creators: name: H.D. Arora
name: Naithani, Anjali
name: Surbhi Gupta
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Criteria Weights
software reliability
MCDM
Entropy
AHP
Pythagorean fuzzy number

description: Multi Criteria Decision Making techniques often face the challenge of determining criteria weights. The weights of criteria can significantly impact the outcomes of the decision-making process. Therefore, it is crucial to pay close consideration to the objectivity characteristics of criteria weights. Many weighting methods were discussed by various authors and utilized to solve various decision-making complications in Analytical Hierarchy Process (AHP), Entropy method, Weighing Score Method (WSM), Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), Best worse method (MWM), VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR), Criteria Importance Through Intercriteria Correlation (CRITIC) method, ELECTRE, etc. This research article gives an overview of various weighting strategies that can be used in multi-criteria optimization and proposes a novel approach to determine criteria weights using Pythagorean fuzzy sets to handle uncertainties in the decision maker’s preferences for allocating software reliability. The comparative analysis shows that the proposed weighting method has the advantage of being simple and straightforward in comparison to the existing weighting methods. The evaluation confirms that this novel approach is effective enough to determine objective weights.
Petrology of the Volcanic Rocks of the Region Around Boulder Dam
Creators: name: Sklar, Maurice
Publisher: name: California Institute of Technology
Year: 1938
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: The rocks around Boulder Dam, which range from pre-Cambrian to Recent in age, are dominantly volcanic, but other rock types occur.

Pre-Cambrian granitic rocks occur in the Black Mountains, to the east; at Saddle Ridge is a chloritic schist, also pre-Cambrian.  No known Paleozoic or Mesozoic rocks occur within the area.

The oldest of the early Tertiary (?) rocks is the Altered Monzonite Porphyry (?), which occupies a belt trending east-west across the area.  This formation has been quite thoroughly hydrothermally altered.  Intrusive into it is the Quartz-Monzonite, which occurs mainly south of Hemenway Wash.

The Older Volcanic Series, the most extensive formation in the area, occurs on both sides of Hemenway Wash, and south of Boulder Dam.  It consists of a tilted series of adesite flows and intercalated sedimentary breccias.  Between it and the Younger Volcanic Series, in Black Canyon, occurs the sedimentary formation, the Dam Breccia.

The Younger Volcanic Series occupies a depressed and tilted block, penetrated by Black Canyon, and rests uncomformably or by fault contact on the Older Volcanic Series, and the Dam Breccia.  It consists of four volcanic extrusive and intrusive members, two tuff members, and two inter-volcanic sedimentary breccias.  The volcanic members are all generally latitic in composition, being high in potassa and in total alkalies.  These volcanic rocks are differentiation products of one primary magma.

The Fortification Hill Basalt and the conformable underlying Muddy Creek Formation are Pliocene, or possible Pleistocene, in age.  Quaternary deposits include terrace gravels of the Colorado River, and recent alluvium.
An Investigation of the Geological Occurrence and Use of Titanium With Special Reference to the San Gabriel Titanium Deposits, California
Creators: name: Orr, James McPhail
Publisher: name: California Institute of Technology
Year: 1938
Subjects: subject: titanium deposits
subject: magnetite-ilmenite ore
subject: San Gabriel Mountains
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: ilmenite deposits

description: It has been customary to class titanium with the rare elements, but in reality it is one of the most abundant of metals. Geochemists have estimated that it constitutes 0.44 per cent of the solid crust of the earth and ranks ninth in relative abundance of the ninety odd elements found there. It is more abundant than the common elements carbon, phosphorous, sulphur, and manganese, and exceeds the total of the common metals, lead, zinc, and copper. Titanium is also one of the most widely distributed of the elements.

Why then, has it not come into more common use during the one hundred and forty years since discovery? There are two principal reasons: (1) Its great chemical tenacity which made it very hard to treat. (2) The fact that its minerals have shown no characteristics that make their usefulness readily apparent. In a narrow sense, it is true that titanium is seldom met with in nature in easily recognizable forms or in concentrations that readily attract attention; yet there are ample supplies available in commercial deposits.

For these reasons titanium compounds as articles of commerce were almost unknown until recent years. With the intensified interest now manifest in the utilization of the so-called rare metals, titanium is rapidly increasing in importance. Its rapid growth is well illustrated by the titanium pigment industry which has increased its consumption of ilmenite (FeO-TiO2) from 2,000 to 3,000 tons to over 100,000 tons a year in less than a decade. As technical improvements continue to remove its economic handicaps it is felt that titanium, because of its wide-spread distribution and abundance, will occupy an important place in the mineral industry.

The purpose of this thesis is: (1) to give a general outline of the titanium industry, (2) to present the results of a detailed study made of the ores of titanium deposit in the San Gabriel Mountains near Los Angeles, California.
Network method for deformation analysis of three-dimensional point cloud with terrestrial laser scanning sensor
Creators: name: Xu, Xiangyang
name: Yang, Hao
Publisher: name: Thousand Oaks : Sage Publications
Year: 2018
Subjects: subject: Terrestrial laser scanning technology
subject: deformation analysis
subject: network method
subject: point cloud data
subject: pointwise displacement
subject: Dewey Decimal Classification::600 | Technik

description: The complexity of structural materials is increasing the importance of the technology for high accuracy measurement. How to obtain the displacement information of structural feature points accurately and efficiently is the key issue of deformation analysis. In this article, displacement analysis of a composite arched structure is investigated based on the terrestrial laser scanning technique. A new method based on the measured point cloud is proposed to analyze the displacement of surficial points, resulting in not only the displacement size but also the displacement direction. The innovation lies in extracting the displacement information with a network and remapped point cloud, which is called the network method. The displacement map obtained demonstrates that the transverse displacement in the experiment plays an important role in the safety of the structure, which could not be observed and obtained by the surface approximation method. Therefore, the panorama- and pointwise displacement analysis technologies contribute to ensure the safety of increasingly complex constructions.
Tests of Axial Flow Fans Designed by Lattice Theory
Creators: name: Bowen, William Harold
Publisher: name: California Institute of Technology
Year: 1938
Subjects: Aeronautical Engineering
Aeronautics

description: This paper presents the tests and calibrations which were made on three axial flow fan units of the G.A.L.C.I.T. Boundary Layer Removal Model in order that operating parameters might be developed from the data.  The tests serve also as a check on the success achieved in the design of fans using the Lattice Theory.  (cf. Theoretical Aerodynamics Lecture Notes of Dr. Clark B. Millikan).
Interlaboratory study on rheological properties of cement pastes and reference substances: comparability of measurements performed with different rheometers and measurement geometries
Creators: name: Haist, Michael
name: Link, Juliane
name: Nicia, David
name: Leinitz, Sarah
name: Baumert, Christian
name: Von Bronk, Tabea
name: Cotardo, Dario
name: Eslami Pirharati, Mahmoud
name: Fataei, Shirin
name: Garrecht, Harald
name: Gehlen, Christoph
name: Hauschildt, Inga
name: Ivanova, Irina
name: Jesinghausen, Steffen
name: Klein, Christopher
name: Krauss, H.-W.
name: Lohaus, Ludger
name: Lowke, Dirk
name: Mazanec, Oliver
name: Pawelczyk, Sebastian
name: Pott, Ursula
name: Radebe, Nonkululeko W.
name: Riedmiller, Joachim Jürgen
name: Schmid, Hans-Joachim
name: Schmidt, Wolfram
name: Secrieru, Egor
name: Stephan, Dietmar
name: Thiedeitz, Mareinke
name: Wilhem, Manfred
name: Mechtcherine, Viktor
Publisher: name: Cachan : RILEM Publications SARL
Year: 2020
Subjects: subject: cements
subject: geometry
subject: rheology
subject: rheometers
subject: ultrasonics
subject: viscosity
subject: interlaboratory studies
subject: measurement geometry
subject: measurement setup
subject: plastic viscosity
subject: reference substance
subject: reproducibilities
subject: rheological measurements
subject: rheological property
subject: yield stress
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: This paper presents the results of an interlaboratory study of the rheological properties of cement paste and ultrasound gel as reference substance. The goal was to quantify the comparability and reproducibility of measurements of the Bingham parameters yield stress and plastic viscosity when measured on one specific paste composition and one particular ultrasound gel in different laboratories using different rheometers and measurement geometries. The procedures for both in preparing the cement paste and carrying out the rheological measurements on cement paste and ultrasound gel were carefully defined for all of the study’s participants. Different conversion schemes for comparing the results obtained with the different measurement setups are presented here and critically discussed. The procedure proposed in this paper ensured a reasonable comparability of the results with a coefficient of variation for the yield stress of 27% and for the plastic viscosity of 24%, despite the individual measurement series’ having been performed in different labs with different rheometers and measurement geometries. © 2020, The Author(s).
Revisiting the PT-symmetric Trimer: Bifurcations, Ghost States and Associated Dynamics
Creators: name: Li, K.
name: Kevrekidis, P. G.
name: Frantzeskakis, D. J.
name: Ruter, C. E.
name: Kip, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we revisit one of the prototypical PT-symmetric oligomers, namely the trimer. We find all the relevant branches of "regular" solutions and analyze the bifurcations and instabilities thereof. Our work generalizes the formulation that was proposed recently in the case of dimers for the so-called "ghost states" of trimers, which we also identify and connect to symmetry-breaking bifurcations from the regular states. We also examine the dynamics of unstable trimers, as well as those of the ghost states in the parametric regime where the latter are found to exist. Finally, we present the current state of the art for optical experiments in PT-symmetric trimers, as well as experimental results in a gain-loss-gain three channel waveguide structure.
PROCESS MODELING AND NUMERICAL INVESTIGATION OF VENEER CUTTING SYSTEM OF A PLYWOOD PLANT WITH STOCHASTIC APPROACH
Creators: name: Malik, Subhash
name: Narendra Kumar
name: Kumar, Sudhir
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Availability
DSS
Maintenance
Markov Chain
PSO
RAM Tools

description: Present paper covers performance modelling and performability evaluation of a veneer-cutting system of plywood manufacturing industry. The performability is evaluated as a function of availability. In this system the different subsystems are connected in hybrid mode. Markovian Approach was used for developing the process modeling of the subsystems and to evaluate the performability of said system. MATLAB software was used to perform the numerical computations as well as simulation of results. The current work examines the impact of varied failure rates and repair rates on the long-term availability of the system. A Particle Swarm Optimization (PSO) based technique was used to optimize the results. A Decision Support System (DSS), which can be helpful for making strategic decisions on financial investments in managing the maintenance priorities, spare part management, and human resource requirements, among other things, has been recommended based on the numerical investigation..
Potamogeton densus L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. densus L. Cat. 332. l: Bouveret (J.); Illarsaz (J.). - 2:In der Sarvaz vom Quellbach bis zur «Douve des Maretsons» und im. Entwässerungskanal von hier bis Branson und zu den Follateres (Garns). - 3: Econe bei Riddes (Besse). Var. setaceus (L.) Rchb.- 2: Geronde bei Siders(P.).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Geology of a Portion of Piru and Santa Susana Quadrangles
Creators: name: Knight, Jack William
Publisher: name: California Institute of Technology
Year: 1938
Subjects: subject: Ramona Canyon
subject: Nuevo Canyon
subject: Piru Quadrangle
subject: Leckler Canyon
subject: Santa Felicia Canyon
subject: Holser Canyon
subject: Santa Susanna Quadrangle
subject: Geology
subject: FOS: Earth and related environmental sciences

description: This area is situated adjoining the town of Piru, California, the area extending to the north and east of the town, in the northeast corner of the Piru quadrangle and the northwest corner of the Santa Susanna quadrangle. Piru is located on State highway 126 connecting the Ridge Route highway (U.S. 99) with the Coast (Roosevelt) Highway (U.S. 101) at Ventura. To reach Piru, travel from Los Angeles out Highway 99 to Castaic Junction, fifteen miles beyond San Fernando. Turn left on highway 126 and travel twelve miles to Piru. The southern extremity of the area borders on highway 126 and extends approximately from the Los Angeles-Ventura County border to Piru. All roads to Piru are well paved, except for one stretch just outside of Piru where a flood has washed out some two hundred yards of pavement.

The area is shaped roughly like a trapezoid and contains
approximately sixteen square miles. The boundary, beginning
at Piru, extends east along highway 126 for approximately five miles, turns north for another four and one-half miles, turns west along Leckler and Santa Felicia canyons to Piru Creek, extends about one-half mile farther west, and then parallels Piru Creek down to Piru. The hills are sufficiently covered with grass to warrant several large ranches with quite a few live stock. Several bee colonies are cultivated here. All of the area is leased by the Pacific Western Oil Company, and written permission must be obtained before anyone is permitted to trespass in the area. There is one road running along the bank of Piru Creek that originally had several offshoots to different parts of the area and to ranches in the canyons, but
now the flood of March, 1938, has washed out all the side roads and nearly demolished the main road up the canyon.
Regional material flow behaviors of agro-food processing craft villages in Red River Delta, Vietnam
Creators: name: Tran, Nguyet Thi
name: Weichgrebe, Dirk
Publisher: name: Oxford [u.a.] : Wiley-Blackwell
Year: 2020
Subjects: subject: Red River Delta (RRD)
subject: agro‐Food Processing Craft Villages (FPCVs)
subject: FPCVs pollution
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: The economic reform “Đổi Mới” in 1986 has rapidly increased the number of craft villages in Vietnam, especially in the Red River Delta (RRD) leading to environmental degradation. This article presents an assessment of environmental and resource issues of agro-Food Processing Craft Villages (FPCVs) in RRD using a refined approach to material flow analysis focusing on consistent quantification of uncertainty with particular attention to secondary and empirical data that are often faced in material flow analyses in transition economies. Material flows of agro-Food Processing including eight types of production were examined and linked to activities of private Households, Rice Cultivation, and Pig Farming in a model called Red River Delta. Materials investigated were Goods (i.e., total materials), organic carbon (org.C), nitrogen (N), and phosphorus (P). The findings reveal material cycles are almost entirely open, that is, the materials used in FPCVs do not recycle within the region. From ∼10.5 million tons/year of imported Goods used for agro-Food Processing, final products and utilized materials account for minor fractions (∼5%, by weight). Conversely, the majority (88%) is directly discharged. Materials accumulated as stocks represent 1% of Goods (100,000 tons/year), 21% of org.C (∼34,000 tons/year), 42% of N (∼1,300 tons/year), and 57% of P (∼300 tons/year), whose substance concentrations vastly exceed natural resilience capacities. Although agro-Food Processing accounts for negligible material shares in Red River Delta, FPCVs pollution is severe at local levels due to the location of home-based production. Several options for closing material loops at various system scales are recommended for environmental and resource management of FPCVs. The material flow analysis results provide a database that may be used as a decision support tool for production establishments in craft villages and relevant authorities in setting priorities on environmental planning and resource management. This article met the requirements for a gold – silver JIE data openness badge described at http://jie.click/badges. © 2019 The Authors. Journal of Industrial Ecology published by Wiley Periodicals, Inc. on behalf of Yale University
title: Décentraliser dans la Tunisie post-autoritaire: l'émergence d’un pouvoir local face aux limites imposées par le consensus sécuritaire
Creators: name: Belhadj, Souhaïl
Publisher: name: Graduate Institute of International and Development Studies
publisherIdentifier: https://ror.org/007ygn379
publisherIdentifierScheme: ROR
Year: 2018

description: CCDP Working Paper ; no. 13
Optimal spare-switching times in series systems under a general framework
Creators: name: Jeddi, Hamideh
name: Doostparast, Mahdi
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Allocation
Reliability
Stochastic orders
Redundancy
Switching

description: Spares are commonly used to improve system performances. They are allocated to original components during system missions. The optimal allocations depend on system configurations and lifetimes of components and spares. Various methods for finding optimal allocations have been proposed in the literature. For sake of brevity, lifetimes of components are commonly assumed to be independent. This paper deals with series systems, a common configuration, under a general setting, i.e. component lifetimes are dependent and heterogeneous. Moreover, the spare is also allowed to switch among original components to impose more flexibility for spare managements. This allowance occurred usually in network servers and electrical generators which manage by a dispatching center. Explicit expressions for system reliability functions are derived in detail. Since system lifetimes are random phenomena, stochastic orders are utilized for comparison purposes. Various illustrative examples are also given.
Competing Supersolid and Haldane Insulator phases in the extended one-dimensional bosonic Hubbard model
Creators: name: Batrouni, G. G.
name: Scalettar, R. T.
name: Rousseau, V. G.
name: Grémaud, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The Haldane Insulator is a gapped phase characterized by an exotic non-local order parameter. The parameter regimes at which it might exist, and how it competes with alternate types of order, such as supersolid order, are still incompletely understood. Using the Stochastic Green Function (SGF) quantum Monte Carlo (QMC) and the Density Matrix Renormalization Group (DMRG), we study numerically the ground state phase diagram of the one-dimensional bosonic Hubbard model (BHM) with contact and near neighbor repulsive interactions. We show that, depending on the ratio of the near neighbor to contact interactions, this model exhibits charge density waves (CDW), superfluid (SF), supersolid (SS) and the recently identified Haldane insulating (HI) phases. We show that the HI exists only at the tip of the unit filling CDW lobe and that there is a stable SS phase over a very wide range of parameters.
Carbonate Formation in Non-Aqueous Environments by Solid-Gas Carbonation of Silicates
Creators: name: Day, S. J.
name: Thompson, S. P.
name: Evans, A.
name: Parker, J. E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have produced synthetic analogues of cosmic silicates using the Sol Gel method, producing amorphous silicates of composition Mg(x)Ca(1-x)SiO3. Using synchrotron X-ray powder diffraction on Beamline I11 at the Diamond Light Source, together with a newly-commissioned gas cell, real-time powder diffraction scans have been taken of a range of silicates exposed to CO2 under non-ambient conditions. The SXPD is complemented by other techniques including Raman and Infrared Spectroscopy and SEM imaging.
description: 5 pages, 3 figures. Contribution to the Proceedings of the First European Conference on Laboratory Astrophysics (ECLA)
Investigating factors for disaster preparedness among residents of Kuala Lumpur
Creators: name: Mohammad-Pajooh, Ehsan
name: Ab. Aziz, K.
Publisher: name: Göttingen : Copernicus
Year: 2014
Subjects: subject: disaster
subject: preparedness
subject: disaster preparedness
subject: resident
subject: Kuala Lumpur
subject: study
subject: Katastrophe
subject: Naturkastrophe
subject: Katastrophenschutz
subject: Vorkehrung
subject: Vorbereitung
subject: Schutzmaßnahme
subject: Einwohner
subject: Studie
subject: Naturkatastrophe
subject: Katastrophenschutz
subject: Einwohner
subject: Kuala Lumpur
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::710 | Landschaftsgestaltung, Raumplanung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: The review of past researches discussed that factors such as climate change and movement toward urbanization will result in more frequent and severe disasters in the near future (Yasuhara et al., 2011). Flash flood is the most common type of disaster that residents of Kuala Lumpur (KL) come across, thus in this study, it was desired to discover the factors affecting preparedness among residents of KL as well as assessing the variation of individual preparedness among residents. With the aid of SPSS analysis, the reliability of data, correlation and regression analysis between the investigated factors and disaster preparedness were obtained. According to this research it was found that level of preparedness of residents of KL is still below average; majority of social demographic indicators such as income, education, age, and property ownership showed significant contribution to the variation of disaster preparedness among the residents. For instance men were much more prepared in comparison to women; residents with high level of income and education had also significantly higher preparedness compared to those with low level of income and education. Race was the only factor that differs from the findings of previous studies; since race does not affect the preparedness.
Experimental Investigation of the Thickness of the Boundary Layer and the Location of the Transitional Region Along a Wing Section
Creators: name: Putt, Donald Leander
Publisher: name: California Institute of Technology
Year: 1938
Subjects: Aeronautics
Aeronautical Engineering

description: A general review of the investigation of the thickness of the boundary layer and the location of the transition point on an airplane wing in free flight that have been published to date is presented, along with some of the conclusions that have been reached from the results of the investigations.

The development and design of apparatus for the experimental determination of the thickness of the boundary layer, and the location of the point of transition from laminar to turbulent flow in the boundary layer which can be readily attached to the surface of a metal airplane wing is described.

Also the method and technique developed for recording the data and the interpretation of the test results are described in detail.
Effect of a built-in electric field in asymmetric ferroelectric tunnel junctions
Creators: name: Liu, Yang
name: Lou, Xiaojie
name: Bibes, Manuel
name: Dkhil, Brahim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The contribution of a built-in electric field to ferroelectric phase transition in asymmetric ferroelectric tunnel junctions is studied using a multiscale thermodynamic model. It is demonstrated in details that there exists a critical thickness at which an unusual ferroelectric-\'\' polar non-ferroelectric\rq\rq phase transition occurs in asymmetric ferroelectric tunnel junctions. In the \'\' polar non-ferroelectric\rq\rq phase, there is only one non-switchable polarization which is caused by the competition between the depolarizing field and the built-in field, and closure-like domains are proposed to form to minimize the system energy. The transition temperature is found to decrease monotonically as the ferroelectric barrier thickness is decreased and the reduction becomes more significant for the thinner ferroelectric layers. As a matter of fact, the built-in electric field does not only result in smearing of phase transition but also forces the transition to take place at a reduced temperature. Such findings may impose a fundamental limit on the work temperature and thus should be further taken into account in the future ferroelectric tunnel junction-type or ferroelectric capacitor-type devices.
description: 9 pages, 8 figures, submitted to PRB
HIGH-TEMPERATURE CONDUCTING POLYMERS
Creators: name: Ke, Zhifan
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 340304
subject: Optical properties of materials
classificationCode: 340305
subject: Physical properties of materials
classificationCode: 340306
subject: Polymerisation mechanisms
classificationCode: 340309
subject: Theory and design of materials
classificationCode: 340307
subject: Structure and dynamics of materials
classificationCode: 340505
subject: Physical organic chemistry

description: Conducting polymers have garnered enormous attention due to their unique properties, including tunable chemical structure, high flexibility, solution processability, and biocompatibility. They hold promising applications in flexible electronics, renewable energies, sensing, and healthcare. Despite notable progress in conducting polymers over the past few decades, most of them still suffer from complicated synthesis routes, limited processability, low electrical conductivity, and poor ambient stability compared to their inorganic counterparts. Additionally, the susceptibility of conducting polymers to high temperatures makes them not applicable in real-life electronics. To address the challenges of developing high-performance and stable conducting polymers, we present two key approaches: dopant innovation for polymer-dopant interaction engineering and the discovery of new conjugated polymer hosts. From the perspective of dopant design, we first utilize cross-linkable chlorosilanes (C-Si) to design thermally and chemically stable conductive polymer composites. C-Si can form robust siloxane networks and simultaneously dope the host conjugated polymers. Besides, we have introduced a new class of dopants, namely aromatic ionic dopants (AIDs). The use of AIDs allows for the separation of doping and charge compensation, two processes involved in molecular doping, and therefore leads to highly efficient doping and thermally stable doped systems. We then provide insights into the design of novel conjugated polymer hosts. Remarkably, we have developed the first thermodynamically stable n-type conducting polymer, n-doped Poly (3,7-dihydrobenzo[1,2-b:4,5-b′]difuran-2,6-dione) (n-PBDF). n-PBDF is synthesized from a simple and scalable route, involving oxidative polymerization and reductive doping in one pot in the air. The n-PBDF ink is solution processable with excellent ink stability and the n-PBDF thin film is highly conductive, transparent, patternable, and robust. In addition, precise control over the doping levels of n-PBDF has been achieved through chemical doping and dedoping. By tuning the n-PBDF thin films between highly doped and dedoped states, the system shows controllable conductivity, optical properties, and energetics, thereby offering potential applications in a variety of organic electronics. Overall, this research advances the fundamental understanding of molecular doping and offers insights for the development of high-conductivity, stable conducting polymers with tunable properties for next-generation electronics.
Reduction of maximum tsunami run-up due to the interaction with beachfront development – application of single sinusoidal waves
Creators: name: Goseberg, Nils
Publisher: name: Göttingen : Copernicus
Year: 2013
Subjects: subject: long waves
subject: vertical wall
subject: n-waves
subject: forces
subject: bores
subject: Tsunami
subject: Welle
subject: Anlaufhöhe
subject: tsunami
subject: runup height
subject: reduction
subject: Reduktion
subject: Tsunami
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Experiments are presented that focus on the interaction of single sinusoidal long waves with beachfront development on the shore. A pump-driven methodology is applied to generate the tested waves in the wave flume. The approaching waves firstly propagate over a horizontal bottom, then climbing up a 1 in 40 beach slope. The experiments reported here are confined to the surf similarity parameter of the waves ranging from ξ =7.69–10.49. The maximum run-up of the tested waves under undisturbed conditions agrees well with analytical results of of Madsen and Schäffer (2010). Beachfront development is modelled with cubic concrete blocks (macro-roughness (MR) elements). The obstruction ratio, the number of element rows parallel to the shoreline as well as the way of arranging the MR elements influences the overall reduction of maximum run-up compared to the undisturbed run-up conditions. Staggered and aligned as well as rotated and non-rotated arrangements are tested. As a result, nomograms are finally compiled to depict the maximum run-up reduction over the surf similarity parameter. In addition, some guidance on practical application of the results to an example location is given.
Replication package for the paper "On the Reuse of Existing Configurations for Evolving Feature Models"
Creators: name: Bombarda Andrea
name: Bonfanti Silvia
name: Gargantini Angelo
Publisher: name: Zenodo
Year: 2023

description: Replication package for the paper "On the Reuse of Existing Configurations for Evolving Feature Models" submitted to VariVolution 2023
PROFITABILITY ANALYSIS OF A FOOD INDUSTRIAL SYSTEM HAVING MAKE-AND-PACK PRODUCTION STRATEGY WITH PRIORITY BASIS REPAIR
Creators: name: , Monika
name: Chopra, Garima
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: make-and-pack production process
priority basis repair
regenerative point technique
semi-Markov process

description: The present investigation is concerned with the profitability analysis of a food industrial system where production is based on the make-and-pack strategy. The system is assumed to have two subsystems: first subsystem is for making while the second is for packing the product so formed. As per the gathered information about the production procedure in the food industrial plant, the priority of repair is given to the making subsystem over the packing subsystem. Here, failure of either subsystem leads to a complete breakdown of the system. Also, two types of failures are considered in the packing subsystem i.e. minor failures and major failures. Two kinds of repairers (operator and fitter) are appointed to tackle the failures in the subsystems. For minor and major failures in the packing subsystem, the operator and fitter respectively are responsible for repairs. However, any failure in making subsystem is repaired by the combined efforts of the operator and fitter. Reliability characteristics such as mean time to system failure (MTSF), system availability, and expected busy period of the repair persons are studied by employing the semi-Markov process and regenerative point technique. The system profitability is graphically analyzed concerning to failure rates of both subsystems.
Influence of retention areas on the propagation of storm surges in the Weser estuary
Creators: name: Zorndt, Anna C.
name: Goseberg, Nils
name: Schlurmann, Torsten
Publisher: name: Reston : American Society of Civil Engineers (ASCE)
Year: 2014
Subjects: subject: Design water levels
subject: Retention areas
subject: Storm surges
subject: Weser estuary
subject: Catchments
subject: Climate change
subject: Coastal engineering
subject: Floods
subject: Fluid dynamics
subject: Geometry
subject: Hydraulic structures
subject: Hydrodynamics
subject: Levees
subject: Shore protection
subject: Storms
subject: Water levels
subject: Anthropogenic climate changes
subject: Coastal protection
subject: Design water level
subject: High-resolution models
subject: Low safety levels
subject: Small-scale features
subject: Estuaries
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: The hydrodynamics of estuaries are forced by the tides from the open sea and the river runoff from the catchment area. The hinterland is often low-lying and densely populated and must therefore be protected by dikes. Anthropogenic climate change poses new challenges to the coastal protection. However, changes in the geometry of the estuaries can have equally severe impacts on the deformation of a storm surge wave form when it propagates through the estuary. This affects the peak water levels and hence the design water levels. This contribution focuses on the influence of retention areas or forelands seaside of the main dike lines, which are protected by summer dikes against the less severe but more frequently occurring storm surges. This is shown at the example of a retention area in the Weser estuary, which has historically been the cite of a soccer stadium and thus hosts high values which stand in sharp contrast against the low safety level against flooding. The investigation is conducted with a 3D hydrodynamic numerical model which has previously been validated for the simulation of storm surges. The results show that even very small changes in the geometry of the estuary can have effects on design levels. This is even the case when they only regard the summer dike crests heights around retention areas and not their volume. Another important finding is that the geometry changes may have their maximum impacts quite far away from the specific river reach in which they are carried out. The results underline that for designing safe and reliable storm surge infrastructure, storm events should be studied in high resolution models which are able to resolve even small scale features such as summer dike lines.
PROJECT CHARACTERISTICS WITH TRIANGULAR FUZZY NUMBER
Creators: name: Adilakshmi Siripurapu
name: Nowpada, Ravi Shankar
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Activity duration
critical degree
critical path method
project characteristics
triangular fuzzy number

description: The Critical Path Method (CPM) is required to plan, organize, and arrange for major project networks. A clear estimate of the time duration will help in the successful execution of the CPM. However, the time duration cannot be precisely specified in real life. As a result, there is always uncertainty about the duration of activities, leading to the invention of the fuzzy critical path method. This study proposes a simple method for critical path analysis and project characteristics in a project network with a triangular fuzzy number. Furthermore, this study defines the most critical path and the relative path degree of criticality, both theoretically valid and practical. The suggested method can determine the critical path, project characteristics and critical degree of an activity as shown by an example discussed in some earlier studies. The proposed approach is very simple to apply and does not require knowing the explicit form of the membership functions of the fuzzy activity times.
Integrated GNSS Attitude Determination and Positioning for Direct Geo-Referencing
Creators: name: Nadarajah, Nandakumaran
name: Paffenholz, Jens-André
name: Teunissen, Peter J.G.
Publisher: name: Basel : MDPI AG
Year: 2014
Subjects: subject: global navigation satellite system
subject: GNSS
subject: attitude determination
subject: multivariate constrained integer least-squares
subject: MC-LAMBDA
subject: carrier phase ambiguity resolution
subject: direct geo-referencing
subject: laser scanner
subject: Globales Navigationssatellitensystem
subject: Lagebestimmung
subject: Kleinste-Quadrate-Methode
subject: Träger-Phasen-Mehrdeutigkeitsauflösung
subject: Trägerphasen-Mehrdeutigkeitsauflösung
subject: Mehrdeutigkeitsauflösung
subject: Trägerphase
subject: Direkte Georeferenzierung
subject: Laserscanner
subject: Positionsbestimmung
subject: Methode der kleinsten Quadrate
subject: GNSS
subject: Lagemessung
subject: Ambiguität
subject: Georeferenzierung
subject: Laserscanner
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Direct geo-referencing is an efficient methodology for the fast acquisition of 3D spatial data. It requires the fusion of spatial data acquisition sensors with navigation sensors, such as Global Navigation Satellite System (GNSS) receivers. In this contribution, we consider an integrated GNSS navigation system to provide estimates of the position and attitude (orientation) of a 3D laser scanner. The proposed multi-sensor system (MSS) consists of multiple GNSS antennas rigidly mounted on the frame of a rotating laser scanner and a reference GNSS station with known coordinates. Precise GNSS navigation requires the resolution of the carrier phase ambiguities. The proposed method uses the multivariate constrained integer least-squares (MC-LAMBDA) method for the estimation of rotating frame ambiguities and attitude angles. MC-LAMBDA makes use of the known antenna geometry to strengthen the underlying attitude model and, hence, to enhance the reliability of rotating frame ambiguity resolution and attitude determination. The reliable estimation of rotating frame ambiguities is consequently utilized to enhance the relative positioning of the rotating frame with respect to the reference station. This integrated (array-aided) method improves ambiguity resolution, as well as positioning accuracy between the rotating frame and the reference station. Numerical analyses of GNSS data from a real-data campaign confirm the improved performance of the proposed method over the existing method. In particular, the integrated method yields reliable ambiguity resolution and reduces position standard deviation by a factor of about 0.8, matching the theoretical gain of √3/4 for two antennas on the rotating frame and a single antenna at the reference station.
Equation of state for neutron stars in SU(3) flavor symmetry
Creators: name: Miyatsu, Tsuyoshi
name: Cheoun, Myung-Ki
name: Saito, Koichi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using several relativistic mean field models (such as GM1, GM3, NL3, TM1, FSUGold and IU-FSU) as well as the quark-meson coupling model, we calculate the particle fractions, the equation of state, the maximum mass and radius of a neutron star within relativistic Hartree approximation. In determining the couplings of the isoscalar, vector mesons to the octet baryons, we examine the extension of SU(6) spin-flavor symmetry to SU(3) flavor symmetry. Furthermore, we consider the strange ($σ^{\ast}$ and $ϕ$) mesons, and study how they affect the equation of state. We find that the equation of state in SU(3) symmetry can sustain a neutron star with mass of $(1.8 \sim 2.1) M_{\odot}$ even if hyperons exist inside the core. In addition, the strange vector ($ϕ$) meson and the variation of baryon structure in matter also play important roles in supporting a massive neutron star.
description: 28 pages, 12 figures, 5 tables