cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Investigation into the implementation of a multimodal 3D measurement system for a forestry harvesting process
Creators: name: Illmann, Raik
name: Fütterer, Richard
name: Lummitsch, Sascha
name: Rosenberger, Maik
name: Notni, Gunther
name: Findeisen, Erik
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: In the context of digitalization, monitoring and traceability are also becoming increasingly important in the forestry sector. An essential component of the most efficient value creation is the recording of relevant characteristics right from the start. The optical and tactile recording of characteristics, such as diameter and volume, have been solved to a large extent in the harvesting of heavy timber, but differs significantly from that of small timber. This paper is about an investigation on the implementation of a multimodal 3D sensor system, which is used for the stable detection of biomass directly in the harvesting process of weak wood. System technical possibilities are shown how biomass can be determined directly during the harvesting process by means of multimodal 3D measurement technology. Considerations regarding possible measurement principles and methods result in two methods, which are discussed within this thesis regarding their advantages and disadvantages. The development stages are presented in detail up to the practical tests, which also includes the acquisition of empirical a priori information. Finally, data are determined by means of test scenarios, which prove the principle functionality and make the methods evaluable.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
STRATEGIC ANALYSIS AND KNOWLEDGE SUPPORT SYSTEMS FOR RURAL DEVELOPMENT STRATEGIES IN SUB-SAHARAN AFRICA
Creators: name: Johnson, Michael
name: Resnick, Danielle
name: Bolwig, Simon
name: Chamberlin, Jordan
name: You, Liangzhi
name: Wood, Stanley
name: Hazell, Peter B.R.
name: Johnson, Michael
name: Resnick, Danielle
name: Bolwig, Simon
name: Chamberlin, Jordan
name: You, Liangzhi
name: Wood, Stanley
name: Hazell, Peter B.R.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Community/Rural/Urban Development
subject: Agricultural growth
subject: Strategic analysis
subject: Sub-Saharan Africa

description: While greater growth in agriculture and the broader rural sector is crucial for ameliorating Africa's high levels of poverty and malnutrition, developing strategies to achieve these objectives is hindered by a number of factors, including the broad array of interventions needed, the lack of accurate data, and dearth of trained local policy analysts. As such, this paper proposes a Strategic Analysis Knowledge Support System (SAKSS) in which data, tools, and knowledge are compiled, analyzed, and disseminated for the purposes of identifying a set of priority investment and policy options to promote agricultural growth and rural development. These analyses can in turn help inform the broader process of designing, implementing, and monitoring and evaluating a country's rural development strategy. In order to be an influential and sustainable part of this process and become a genuine "knowledge system," SAKSS will need to be established with an awareness of each country's development priorities and unique political, social, and economic context. By institutionalizing SAKSS through a network structure that includes government ministries, research institutions, universities, regional organizations, non-governmental organizations, and donors, SAKSS can become not only more relevant and legitimate for its intended end-users but also help strengthen local analytical capacity to inform the policy debate on future development strategies and outcomes.
GENRE SPECIFICITY OF PHILOSOPHICAL-SATIRICAL PROSE
Creators: name: Alimova, Mamurakhon
name: Kholmatova, Muhlisa
name: Bakhromova, Nafosat
name: Akbarova, Muslima
Publisher: name: Zenodo
Year: 2025

description: This article discusses the genre originality of philosophical and satirical prose, satirical techniques, philosophical and satirical prose as a special genre of literature that combines philosophical reflections and the critical attitude of the author to reality.
Impact of Negative Arrivals and Multiple Working Vacation on Dual Supplier Inventory Model with Finite Lifetimes
Creators: name: M. L. Soujanya
name: P. Vijaya Laxmi
name: E. Sirisha
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: (𝑠
𝑆) policy
Two-supply inventory
Lead time
𝑅𝐶𝐸 process
Multiple working vacations
Matrix analytic method

description: In this paper we analyzed an inventory model with two-suppliers, finite life times, multiple working vacations and customers who arrive according to 𝑅𝐶𝐸 process. Perishable and replenishment rates of two-suppliers are exponentially distributed. The server takes exponential working vacations when the queue is empty. Arrival process follows Poisson distribution and the probability for an ordinary customer is 𝑝 and for negative customer is 𝑞. Limiting distribution of the assumed model is obtained. Numerical results are presented for cost function and various system performance parameters. The impact of two-suppliers on the optimal reorder points will be useful in developing strategies for handling various perishable inventory problems with replenishment rates.
Introducing Probabilistic Models for Cost Analysis of Sachet Water Plant
Creators: name: Nafisatu Muhammad Usman
name: Yusuf, Ibrahim
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Availability
modelling
probability
sachet water plant

description: The paper deals with modeling and performance assessment of a series-parallel with independent failures using the Markov Birth-Death method and the probabilistic approach. The system consists of five subsystems arranged in series and parallel configurations with three possible states of operation, reduced capacity and failure. First-order systems of ordinary differential equations are developed and recursively resolved using a probabilistic approach via the transition diagram. The state probabilities for the proposed scheme are derived. Using state probabilities, system availability expressions, busy repairman probabilities due to minor and major failures as well as benefit feature are calculated. Profit and availability matrices for each subsystem have been computed to provide various output values for different combinations of parameters. The finding of this paper will boost the efficiency of the system and will be useful for timely maintenance progress, decision-making, preparation and optimization.
AGRI-INDUSTRY VALUE CHAIN MODEL: A TOOL FOR INDUSTRY BENCHMARKING AND SCENARIO ANALYSIS
Creators: name: Nazrul, Islam
name: Xayavong, Vilaphonh
name: Nazrul, Islam
name: Xayavong, Vilaphonh
Publisher: name: Unknown
Year: 2010
Subjects: Agricultural and Food Policy

description: Agri-industry stakeholders need to respond to the challenge of meeting the demands for higher quality products at competitive prices under increased competition in volatile markets. Development and application of an appropriate computer-based agri-industry value chain model can provide strategic options to deal with these challenges. This paper presents an overview of the theoretical foundation and the structure of an agri-industry value chain model and demonstrates its application as a tool for benchmarking and scenario analysis of the Western Australian Sheep-meat industry.
The Expansion of Wronskian Hermite Polynomials in the Hermite Basis
Creators: name: Grosu, Codruţ
name: Grosu, Corina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We express Wronskian Hermite polynomials in the Hermite basis and obtain an explicit formula for the coefficients. From this we deduce an upper bound for the modulus of the roots in the case of partitions of length 2. We also derive a general upper bound for the modulus of the real and purely imaginary roots. These bounds are very useful in the study of irreducibility of Wronskian Hermite polynomials. Additionally, we generalize some of our results to a larger class of polynomials.
Inverse Ishita Distribution: Properties and Applications
Creators: name: Shukla, Kamlesh Kumar
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Inverse distribution
Stress-strength Reliability
Maximum likelihood estimation

description: In this paper, new lifetime distribution has been proposed which is an inverse of Ishita distribution Shanker and Shukla (2017). Its statistical and mathematical properties including Reneyi entropy and Stress-strength reliability measure have been discussed. Maximum likelihood estimation method has been used to estimate its parameter. Simulation study has also been carried out to check the behavior of maximum likelihood estimator. Finally, proposed distribution has been applied on lifetime datasets and compares its superiority over other inverse lifetime distributions.
ESTIMATING PRODUCTION RESPONSE OF BROADACRE FARMS IN WESTERN AUSTRALIA: THE NEXUS OF EMPIRICS AND ECONOMICS REVISITED
Creators: name: Xayavong, Vilaphonh
name: Islam, Nazrul
name: Xayavong, Vilaphonh
name: Islam, Nazrul
Publisher: name: Unknown
Year: 2010
Subjects: subject: Livestock Production/Industries
subject: Production Response
subject: Duality Production Theory
subject: Shape Restriction
subject: Nonlinear Inequality Constraints
subject: Flexible Functional Forms.

description: Recently there has been a growing debate as to whether the empirical properties of production response derived from the multi-product framework are consistent with the behavioral assumption in the duality theory of production. This issue could in turn affect the reliable estimates of elasticities which are fundamental requirement to accurate economic forecasting and valid analyses of the impacts of changes in government policies or international events. The crux of the debate is particularly related to whether to estimate cost or profit function and which types of functional form should be used, as well as imposing restrictions on profit and cost functions when those properties are not satisfied by the estimation models. After reviewing the literature, we found that the duality theory may not always hold in empirical work. This depends on many factors such as risk, stochastic error or data quality, and selected functional forms. We also found that the normalized quadratic function has more advantage than other functional forms, although all of flexible functional forms often fail to pass the regularity condition in the duality theory. As such, there is a requirement to impose curvature restriction if normalized quadratic function is used and monotonicity condition needs to be checked if the cross price elasticities are more than unity. We examined the above-mentioned issues by estimating production response for broadacre farms in Western Australia. A normalized quadratic profit function is estimated using the ABARE’s quasi-micro farm level data for the period 1977/78 to 2005/06. The result reflects the imposition of curvature restrictions for a normalized profit function, and estimated elasticities are found to be less elastic in
Methodical Bases of Benchmarking Unique Objects of Electric Power Systems
Creators: name: Farhadzadeh E.M.
name: Muradaliyev A.Z.
name: Ashurova, U.K.
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Benchmarking
oldtech
unique object
operative efficiency
integrated indicator
analysis
synthesis
technical condition

description: One of the basic problems of electro power systems is absence of the normative documents regulating operation, maintenance service and repair of the capital equipment, which service life exceeds normative value. We shall name them «oldtech» (OT). The essence of the difficulties demanding overcoming is reduced to absence of methodologies a quantitative estimation of operative reliability and safety of OT, with the subsequent benchmarking of OT. Considering the science-intensive, bulkiness and labour input of the decision of this problem indisputable becomes necessity of development of the corresponding automated systems. In present article, some features of an estimation of an integrated indicator and benchmarking unique objects are resulted. To unique objects, which analogues on the set combination of versions of significant attributes are absent concern. For an illustration of recommended methods and algorithms technical and economic parameters of power units with SGI-400 are used.
Remittances, Inequality and Poverty: Evidence from Rural Mexico
Creators: name: Taylor, J. Edward
name: Mora, Jorge
name: Adams, Richard H.
name: Lopez-Feldman, Alejandro
name: Taylor, J. Edward
name: Mora, Jorge
name: Adams, Richard H.
name: Lopez-Feldman, Alejandro
Publisher: name: Unknown
Year: 2005
Subjects: subject: Food Security and Poverty
subject: International Development
subject: Migration
subject: Remittances
subject: Inequality
subject: Poverty
subject: Mexico

description: Economic research has produced conflicting findings on the distributional impacts of migrant remittances, and there has been little research on the effects of changes in remittances on poverty. This paper utilizes new data from the Mexico National Rural Household Survey, together with inequality and poverty decomposition techniques, to explore the impacts of remittances on rural inequality and poverty. Our findings suggest that remittances from international migrants become more equalizing (or less unequalizing), as well as more effective at reducing poverty, as the prevalence of migration increases.
description: Remittances
title: Influence of the recycling process parameters on CFRTP waste properties
Creators: name: Mohammadkarimi, Shiva
name: Neitzel, Benedikt
name: Puch, Florian
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: Nowadays, the combination of continuous fibers and thermoplastic polymers as the matrix to continuous fiber-reinforced thermoplastics (CFRTP) is receiving increasing attention due to their potential advantages such as excellent weight-specific mechanical properties, short cycle times, storability, repeated meltability, good formability and the use of alternative joining processes enabling automated large volume manufacturing processes which allow various applications in different industries including transportation, construction among others. As the production rate of these materials increases, the amount of waste for disposal increases, for which recycling strategies need to be established to ensure the sustainability of CFRTP. Hence, these recycling strategies must be developed and evaluated economically and ecologically to close the loop and achieve a circular economy to process recycled fiber-reinforced pellets from CFRTP waste to valuable products e.g., by injection molding. This study presents a mechanical recycling approach from CFRTP waste to injection molded test specimens and evaluates the impact of the individual recycling steps along the recycling chain on the fiber length as the fiber length is detrimental to the resulting mechanical properties. First, the CFRTP waste processability is investigated and conditions for size reduction by cutting and shredding into feedstock for extrusion are defined. Second, fiber-reinforced pellets are produced by twin-screw extrusion. The fiber volume content and the process parameters screw speed and temperature during compounding are varied and the influence of these parameters on the fiber length is determined. Third, the extruded pellets are further processed by injection molding. Here, the influence of screw speed, back pressure, and processing temperature as well as the initial fiber length in the extruded granules on the resulting properties is investigated. Quantitative correlations between material properties and processing parameters are presented and suggestions for gentle processing during recycling are given.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
Modelling Health Care Queue Management System Facing Patients’ Impatience using Queuing Theory
Creators: name: Kumar, Rakesh
name: Bhavneet Singh Soodan
name: Sapana Sharma
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Queuing model
Correlated reneging
Balking
Health care queue management
Transient performance analysis

description: In this paper, we study a finite capacity single server queuing model with balking and correlated reneging and discuss its application in queues at health care facilities. The reneging considered so far in the queuing literature is a function of system-state. In many practical situations, reneging may depend on factors other than the system-state. For instance, in health care systems the reneging of patients at two consecutive time marks may be correlated in a sense that if a patient reneges at a time mark then there is a probability that a patient may renege at the next time mark due to the factors like improper check-up, sluggish management, unnecessary costly prescription by doctors, etc. The steady-state solution of the model is derived by using matrix-decomposition method. Finally, the transient performance analysis of the model is performed using Runge-Kutta method.
Efficient Least Residual Greedy Algorithms for Sparse Recovery
Creators: name: Leibovitz, Guy
name: Giryes, Raja
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 41A46, 68Q25, 68W20

description: We present a novel stagewise strategy for improving greedy algorithms for sparse recovery. We demonstrate its efficiency both for synthesis and analysis sparse priors, where in both cases we demonstrate its computational efficiency and competitive reconstruction accuracy. In the synthesis case, we also provide theoretical guarantees for the signal recovery that are on par with the existing perfect reconstruction bounds for the relaxation-based solvers and other sophisticated greedy algorithms.
description: accepted to IEEE Transactions on Signal Processing
Improved Measurement of CP-Violation Parameters sin(2phi1) and |lambda|, B Meson Lifetimes, and B0-B0bar Mixing Parameter Delta m_d
Creators: name: The Belle Collaboration
name: Abe, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a precise measurement of the standard model CP-violation parameter sin(2phi1), the direct CP violation parameter |lambda|, the lifetimes of charged and neutral B mesons and their ratio, and the B0-B0bar mixing parameter Delta m_d based on a sample of 152 x 10^6 BB-bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. One of two B mesons is fully reconstructed in a CP-eigenstate or a flavor-eigenstate decay channel. The flavor of the accompanying B meson is identified from its decay products. From the asymmetry in the distribution of the time interval between the two B meson decay points, we obtain sin(2phi1) = 0.728 +/- 0.056(stat) +/- 0.023(syst), |lambda| = 1.007 +/- 0.041(stat) +/- 0.033(syst), tau_B0 = 1.534 +/- 0.008(stat) +/- 0.010(syst) ps, tau_B+ = 1.635 +/- 0.011(stat) +/- 0.011(syst) ps, tau_B+/tau_B0 = 1.066 +/- 0.008(stat) +/- 0.008(syst) and Delta m_d = 0.511 +/- 0.005(stat) +/- 0.006(syst) ps-1. The results for sin(2phi1) and |lambda| are the most precise measurements performed so far, and are consistent with the standard model expectations. The significance of the observed deviation from unity in the lifetime ratio exceeds five standard deviations.
description: 20 pages, 10 figures, submitted to Physical Review D, also contributed to ICHEP2004, Beijing, China
title: Comparison of the properties of biogenic wine by-products stabilized biocomposites compounded with a miniaturized single-screw extruder and a co-rotating twin-screw extruder
Creators: name: Hiller, Benedikt
name: Rennert, Mirko
name: Nase, Michael
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: Bioplastics research is hindered by high material prices and limited availability of biopolymers. For conventional compounding, even on lab-scale, large quantities of material are required. In this study, an alternative process for compounding biocomposites was evaluated to investigate the potential of wine-derived biogenic by-products as functional fillers. Formulations based on poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and wine grape pomace (WP) with filler contents up to 10 wt.-% were prepared. The materials were processed with a modified miniaturized single-screw extruder (MSE) and compared to a lab-scale twin-screw extruder (TSE). Thermal and rheological properties of the materials were determined using GPC, MFR, DSC, TGA and OIT. The mixing quality of both extruders was evaluated by optical microscopy imaging. The results revealed that the MSE represents an efficient alternative for research purposes, but differences in the dominant degradation mechanisms during processing must be considered. Thermal analysis showed that WP successfully suppressed the thermo-oxidative degradation of PHBV.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
title: Investigation regarding the correlation of the relative influences during the extrusion process of cast films on the resulting melt quality
Creators: name: Trienens, Dorte
name: Schöppner, Volker
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: One key competence in plastics processing is extrusion on single-screw machines. In terms of volume, the extrusion process is the most relevant processing method for plastic granulates. One of the main goals of the plastics industry is to achieve consistent melt and product quality with increasing mass throughput in order to meet the constantly growing economic requirements. A specific machine design is particularly important for the efficiency of the extruder. The simulation tools currently available are not yet able to predict the expected product quality with sufficient accuracy. Suitable criteria are selected to adequately describe the melt quality. Extensive investigations form the data basis for the evaluation of the melt quality, on the basis of which the cause-effect relationships are revealed.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
Economic Impact of the Alabama Green Industry 2003 to 2008: Grower Optimism in a Changing Economy
Creators: name: Reynolds-Allie, Kenesha
name: Fields, Deacue
name: Reynolds-Allie, Kenesha
name: Fields, Deacue
Publisher: name: Unknown
Year: 2010
Subjects: Financial Economics
Resource /Energy Economics and Policy

description: Greenhouse and nursery contributes significantly to Alabama’s agricultural industry and the nation’s green industry. This industry represents the number one crop sector in Alabama agriculture and ranks 16th in the nation. This paper compared the 2003 and 2008 economic impact of the green industry in Alabama, which showed tremendous growth over the period. The paper also evaluated factors that influence grower optimism for future growth of their firm. It was found that the product type, percentage sales to different states and different wholesale marketing outlet had a significant impact on grower optimism.
Multi-objective Model for Daily Diet Planning
Creators: name: Mohd Arif Khan
name: Ahteshamul Haq
name: Aquil Ahmed
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Diet Planning
Multi-objective
Weighted goal programming
Preemptive Goal Programming
Fuzzy Goal Programming

description: In this paper, we present the development of a daily diet model using fuzzy multi-objective goal programming (GP) to satisfy daily nutrient. We have designed the objective function as minimize the cost of diet, Saturated Fat and carbohydrate. This paper consists of ten consumed foodstuffs as the decision variable. The daily diet’s tolerable lower and upper intake level is given for the Protein, Vit. B6, Vit. C and Calcium. This paper aims to present a stepwise solution procedure based on fuzzy GP to obtain the compromise solution of the diet problem. Finally, a numerical example is illustrated to compare the daily diet plan with weighted GP, pre-emptive GP and fuzzy GP.
XMM-Newton X-ray and optical observations of the globular clusters M 55 and NGC 3201
Creators: name: Webb, N. A.
name: Wheatley, P. J.
name: Barret, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have observed two low concentration Galactic globular clusters with the X-ray observatory XMM-Newton. We detect 47 faint X-ray sources in the direction of M 55 and 62 in the field of view of NGC 3201. Using the statistical Log N-Log S relationship of extragalactic sources derived from XMM-Newton Lockman Hole observations, to estimate the background source population, we estimate that very few of the sources (1.5+/-1.0) in the field of view of M 55 actually belong to the cluster. These sources are located in the centre of the cluster as we expect if the cluster has undergone mass segregation. NGC 3201 has approximately 15 related sources, which are centrally located but are not constrained to lie within the half mass radius. The sources belonging to this cluster can lie up to 5 core radii from the centre of the cluster which could imply that this cluster has been perturbed. Using X-ray (and optical, in the case of M 55) colours, spectral and timing analysis (where possible) and comparing these observations to previous X-ray observations, we find evidence for sources in each cluster that could be cataclysmic variables, active binaries, millisecond pulsars and possible evidence for a quiescent low mass X-ray binary with a neutron star primary, even though we do not expect any such objects in either of the clusters, due to their low central concentrations. The majority of the other sources are background sources, such as AGN.
description: 12 pages, 7 figures, accepted to be published in A&A
title: Optimizing the processing performance of a single screw extruder using live simulations based on real time experimental data
Creators: name: Köllermeier, Jonas
name: Schöppner, Volker
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: This article aims to present a simulation system with an environment that enables live simulation of the process behavior of a single screw extruder based on real time experimental data. The simulated target variables such as pressure, temperature, throughput and melting behavior are visualized to the machine operator within an assistant system in a graphical form. The results can directly be assessed and furthermore, recommendations for process improvement can be carried out if the process behavior has to be optimized. In a first step, current process parameters such as pressure and screw speed are read repetitively from the extrusion control. Next, this data is used to simulate the process behavior in real time and the results are sent to an assistant system. Afterwards, the results are visualized to the machine operator and based on the simulation results and expert know how potential for optimization can be generated.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
Performance Computation Model and Time Latency Improvement for Blockchain-Based Voting System for Elections in India
Creators: name: Eesha Mishra
name: Kumar, Santosh
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Blockchain
Voting
Electronic Voting

description: Blockchain is inalterable and simple confirmable framework that has a noteworthy potential to be an option in contrast to customary races. It carries savvy answers for focal power issue as far as squares having all information in blockchain. In past decades customary races neither fulfill the residents nor government official. The democratic isn't completely made sure about, compromises security and straightforwardness of voters alongside having an excess of time to check the vote. In this paper, we proposed a model that giving the arrangement utilizing the blockchain to dispense with all drawbacks of customary decisions. The security of information, votes and voter is guaranteed in the framework. The sitting tight an ideal opportunity for result diminished fundamentally through the proposed model.
Reliability Prediction of Distributed System with Homogeneity in Software and Server using Joint Probability Distribution via Copula Approach
Creators: name: Dhruv Raghav
name: D.K. Rawal
name: Yusuf, Ibrahim
name: Rabiu Hamisu Kankarofi
name: V.V. Singh
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Distributed System
Clients
Availability
Software
MTTF
Cost Analysis

description: The present paper intends to design and development reliability models for the analysis of distributed hardwaresoftware system. For the determination of reliability and system performance, the study analyzed a distributed system consisting of a single host with two heterogeneous software running on the host and two identical servers configured as series-parallel system. Both client (host), software and server’s failure time are to be exponentially distributed while repairs follow two forms of distributions that are general and Gumbel-Hougaard family copula. The system is analyzed using supplementary variable technique with implications of Laplace transforms. The results are presented in tables and graphs. Some important measures of reliability such as availability of system, reliability of the system, MTTF and cost analysis have been discussed. Some particular cases have also been derived and examined to see the practical effect of the model.
title: Effect of high energy radiation on technical polymers
Creators: name: Baumann, Andreas
name: Hausmann, Joachim
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: Fiber reinforced polymers (FRP) offer excellent fatigue resistance in combination with low specific weight. However, in contrast to metals, microscopic damage is usually present right from the beginning of cyclic loading and calls for insights on initiation and propagation. As with other properties, the overall performance of a composite is determined by its constituents namely fiber, matrix and fiber-matrix interface. Especially, the matrix polymer is supposedly responsible for damage initiation. To study this, different methods for altering the matrix properties can be used. The presented research makes use of Co-60 irradiation to modify the polymer on a molecular level. Six potential candidate materials for FRP are investigated, two thermoplastics and four thermosets. After irradiating the neat polymer samples with (30, 100, 200 and 500 kGy) the properties are investigated by quasi-static tensile tests and fatigue experiments. The resulting fractures are inspected visually. The results for thermoplastic materials show deteriorating tensile properties, whereas some of the thermosetting resins improve. Despite this, it could also be shown that deterioration in monotonic loading does not necessarily deteriorate the fatigue properties. The fracture surfaces indicate yielding as possible cause. Finally, it was shown that irradiation is a promising modification method for the investigation of composites and possible also a method to improve the fatigue performance.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
Kertesz line and embedded monopoles in QCD
Creators: name: Chernodub, M. N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a new class of defects in QCD which can be viewed as ``embedded'' monopoles made of quark and gluon fields. These objects are explicitly gauge-invariant and they closely resemble the Nambu monopoles in the Standard Electroweak model. We argue that the ``embedded QCD monopoles'' are proliferating in the quark gluon plasma phase while in the low-temperature hadronic phase the spatial proliferation of these objects is suppressed. At realistic quark masses and zero chemical potential the hadronic and quark-gluon phases are generally believed to be connected by a smooth crossover across which all thermodynamic quantities are non-singular. We argue that these QCD phases are separated by a well-defined boundary -- known as the Kertesz line in condensed matter systems -- associated with the onset of the proliferation of the embedded QCD monopoles in the quark gluon plasma phase.
description: 7 pages, 2 figures, RevTeX4 style
Additional file 2 of Microstructure and long-term corrosion of archaeological iron alloy artefacts
Creators: name: Grevey, A.-L.
name: V. Vignal
name: H. Krawiec
name: P. Ozga
name: K. Peche-Quilichini
name: A. Rivalan
name: F. Mazière
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: Additional file 2. Raman spectra results for object #3. (a) zone A, (b) zone B, (c) zone C and (d) zone D. The zones are indicated in Fig. 2. G = goethite, H = hematite, Mt = magnetite, L = lepidocrocite, A = akaganeite, S = siderite, F = ferrihydrite.
Global Implications of U.S. Biofuels Policies in an Integrated Partial and General Equilibrium Framework
Creators: name: Birur, Dileep K.
name: Beach, Robert H.
name: Hertel, Thomas W.
name: McCarl, Bruce A.
name: Birur, Dileep K.
name: Beach, Robert H.
name: Hertel, Thomas W.
name: McCarl, Bruce A.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Land Economics/Use
subject: Resource /Energy Economics and Policy
subject: Biofuels
subject: Indirect land use change
subject: Land use emissions
subject: Partial Equilibrium
subject: Computable General Equilibrium

description: With the increasing research interests in biofuels, global implications of biofuels production have been generally examined either in a partial equilibrium (PE) or general equilibrium (GE) frameworks. Though both of these approaches have unique strengths, they also suffer from many limitations due to complexity of addressing all the relevant aspects of biofuels. In this paper we have exploited the strengths of both PE and GE approaches for analyzing the economic and environmental implications of the U.S. policies on corn-ethanol and biodiesel production. In this study, we utilize the Forest and Agricultural Sector Optimization Model (FASOMGHG: Adams et al. 1996, 2005; Beach et al. 2009), a non-linear programming, PE model for the United States. We also use the GTAP-BIO model (Birur et al. 2008), a multi-region, multi-sector CGE model for global-scale assessment of biofuels policies. Following Britz and Hertel (2009), we link the GTAP-BIO model through a static, quadratic restricted revenue function obtained from perturbing crop prices from the FASOMGHG model. With this linkage we implement the U.S. Corn ethanol and biodiesel scenarios in the GTAP-BIO model and obtain the FASOMGHG-consistent, global land use changes. The resulting crop price changes from the GE model are fed back into the FASOMGHG model to obtain the disaggregated impacts in the U.S.
Additional file 1 of Personalized symptom management: a quality improvement collaborative for implementation of patient reported outcomes (PROs) in ‘real-world’ oncology multisite practices
Creators: name: Howell, Doris
name: Rosberger, Zeev
name: Mayer, Carole
name: Faria, Rosanna
name: Hamel, Marc
name: Snider, Anne
name: Lukosius, Denise Bryant
name: Montgomery, Nicole
name: Mozuraitis, Mindaugas
name: Li, Madeline
Publisher: name: figshare
Year: 2020
Subjects: Medicine
Science Policy

description: Additional file 1.
title: Revolutionizing fiber-reinforced thermoplastic composite recycling: the LightCycle project's journey towards energy-efficient upcycling and quality material regeneration
Creators: name: Krempl, Nina
name: Shahroodi, Zahra
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: The recycling of fiber-reinforced thermoplastic composites presents a significant challenge, leading to high waste generation and limited reuse options. The LightCycle project aims to address this issue by developing an energy-efficient and circular method for upcycling glass fiber composite waste and recycling polypropylene (PP). This work focuses on analyzing the material properties of PP regenerates (rPP) from post-consumer waste in Austria, as well as the compounds derived from it and glass fiber-reinforced thermoplastic composites. The goal is to establish material expertise and determine acceptable quality ranges for the LightCycle process. Thermal and rheological material data measurements to analyze the material input quality and the fluctuation range suggest a stable LightCycle process with a wide process window. Furthermore, the analyzis of first compounds with rPP and two different types of shredded glass fiber reinforced thermoplastic composites highlights the significant impact of the type of flake used on the compound's properties.
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
The Dynamics of Pollination Markets
Creators: name: Champetier, Antoine
name: Champetier, Antoine
Publisher: name: Unknown
Year: 2010
Subjects: subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: pollination
subject: beekeeping
subject: pollination markets
subject: bee population dynamics

description: The economic problem of a commercial beekeeper is akin to that of a traveling salesman with the important difference that bees simultaneously pollinate crops and feed on them. In other words, bees not only provide pollination services but also feed on the crops they visit. As a result, the number and price of bees available for pollination at any time for any crop is determined by the demand for pollination services and the supply of bee food from other crops in the market. I develop a dynamic model of yearly fluctuations in the stock of honey bees and combine it with an economic model of beekeeper's behavior. This dynamic model of bee population highlights the fact that they are a renewable resource whose economic value is derived from both extraction and the provision of pollination services. Losses of hives to parasitic mites and other pests have a greater impact on the pollination cost of crops that blossom early. The effect of honey subsidies on pollination fees is ambiguous theoretically, which challenges previous results from the economics literature on pollination markets.
On the complex singularities of the inverse Langevin function
Creators: name: Rickaby, S. R.
name: Scott, N. H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 74B20

description: We study the inverse Langevin function $\mathscr{L}^{-1}(x)$ because of its importance in modelling limited-stretch elasticity where the stress and strain energy become infinite as a certain maximum strain is approached, modelled here by $x\to1$. The only real singularities of the inverse Langevin function $\mathscr{L}^{-1}(x)$ are two simple poles at $x=\pm1$ and we see how to remove their effects either multiplicatively or additively. In addition, we find that $\mathscr{L}^{-1}(x)$ has an infinity of complex singularities. Examination of the Taylor series about the origin of $\mathscr{L}^{-1}(x)$ shows that the four complex singularities nearest the origin are equidistant from the origin and have the same strength; we develop a new algorithm for finding these four complex singularities. Graphical illustration seems to point to these complex singularities being of a square root nature. An exact analysis then proves these are square root branch points.
description: 25 pages, 10 figures, 4 tables, 50 equations, 28 references
Double Beta Decay Experiments at Canfranc Underground Laboratory
Creators: name: Cebrian, Susana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The first activities of the Canfranc Underground Laboratory ("Laboratorio Subterráneo de Canfranc", LSC) started in the mid-eighties in a railway tunnel located under the Spanish Pyrenees; since then, it has become an international multidisciplinary facility equipped with different services for underground science. The research activity at LSC is about Astroparticle Physics, dark matter searches and neutrino Physics; but also activities in Nuclear Astrophysics, Geophysics, and Biology are carried out. The investigation of the neutrinoless double beta decay has been one of the main research lines of LSC since the beginning. Many unknowns remain in the characterization of the basic neutrino properties and the study of this rare decay process requiring Physics beyond the Standard Model of Particle Physics can shed light on the lepton number conservation, the nature of the neutrinos as Dirac or Majorana particles and the absolute scale and ordering of the masses of the three generations. Here, the double beta decay searches performed at LSC for different emitters and following very different experimental approaches will be reviewed: from the very first experiments in the laboratory including the successful IGEX for $^{76}$Ge, which released very stringent limits to the effective neutrino mass at the time, to the present NEXT experiment for $^{136}$Xe and future project CROSS ("Cryogenic Rare-event Observatory with Surface Sensitivity") for $^{130}$Te and $^{100}$Mo, both implementing innovative detector technologies to discriminate backgrounds. For the neutrinoless double beta decay channel and at 90% C.L., IGEX derived a limit to the half-life of $^{76}$Ge of $T_{1/2}^{0ν} > 1.57 \times 10^{25}$ y while the corresponding expected limits are $T_{1/2}^{0ν} > 1.0\times 10^{26}$ y for $^{136}$Xe from NEXT-100 (for an exposure of 500 kg.y) and $T_{1/2}^{0ν} > 2.8 \times 10^{25}$ y for $^{100}$Mo from CROSS (for 5 y and 4.7 kg of isotope). Activities related to double beta decays searches carried out in other underground laboratories have also been developed at LSC and will be presented too, like the operation of the BiPo-3 detector for radiopurity measurements of thin sheets with very high sensitivity. For each one of these experiments, the concept, the experimental set-ups and relevant results will be discussed.
description: Final version. Abbreviated abstract
Closed String S-matrix Elements in Open String Field Theory
Creators: name: Garousi, Mohammad R.
name: Maktabdaran, G. R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the S-matrix elements of the gauge invariant operators corresponding to on-shell closed strings, in open string field theory. In particular, we calculate the tree level S-matrix element of two ${\it arbitrary}$ closed strings, and the S-matrix element of one closed string and two open strings. By mapping the world-sheet of these amplitudes to the upper half $z$-plane, and by evaluating explicitly the correlators in the ghost part, we show that these S-matrix elements are ${\it exactly}$ identical to the corresponding disk level S-matrix elements in perturbative string theory.
description: 18 pages, 8 figures, Latex file; the version appears in JHEP
Cosmology and the S-matrix
Creators: name: Bousso, Raphael
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study conditions for the existence of asymptotic observables in cosmology. With the exception of de Sitter space, the thermal properties of accelerating universes permit arbitrarily long observations, and guarantee the production of accessible states of arbitrarily large entropy. This suggests that some asymptotic observables may exist, despite the presence of an event horizon. Comparison with decelerating universes shows surprising similarities: Neither type suffers from the limitations encountered in de Sitter space, such as thermalization and boundedness of entropy. However, we argue that no realistic cosmology permits the global observations associated with an S-matrix.
description: 16 pages, 5 figures; v2: minor editing
title: Optimization of the actuation behaviour of a hybrid electromagnetic switching/holding solenoid
Creators: name: Mauch, Manuel
name: Gundelsweiler, Bernd
Publisher: name: ilmedia
Year: 2023
Subjects: subject: 620

description: Despite their long existence and diverse use as electro-magneto-mechanical energy converters, electromagnets are indispensable and of paramount importance in many areas of technology, such as critical switching and positioning tasks in relay and valve technology. Due to growing requirements and technological progress, electromagnets offer further development potential. For example, conditions are placed on an adjustable force-air gap characteristic of the moving armature and, at the same time, low-noise operation and energy conservation are demanded. A hybrid switching/holding solenoid which uses magnetic shape-memory-alloys (MSM) has already been developed at IKFF [1, 2]. These MSM-alloys have been omitted in the solenoid presented in this paper by means of an appropriate design of the magnetic circuit from a commercial point of view and thus provide wide technological benefits [3, 4]
description: Engineering for a changing world: Proceedings : 60th ISC, Ilmenau Scientific Colloquium, Technische Universität Ilmenau, September 04-08, 2023
Additional file 1 of Multiple functions of the scaffold protein Discs large 5 in the control of growth, cell polarity and cell adhesion in Drosophila melanogaster
Creators: name: Parvathy Venugopal
name: Veyssière, Hugo
name: Jean-Louis Couderc
name: Richard, Graziella
name: Vachias, Caroline
name: Mirouse, Vincent
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Developmental Biology
subject: Cancer

description: Additional file 1.