nils-herrmann/clean_scirepeval huggingface dataset:
Inverse Problem for a Mixed Type Integro Differential Equation with Fractional Order Caputo Operators and Spectral Parameters
Venue: Axioms
Year: 2020

The questions of the one value solvability of an inverse boundary value problem for a mixed type integro differential equation with Caputo operators of different fractional orders and spectral parameters are considered. The mixed type integro differential equation with respect to the main unknown function is an inhomogeneous partial integro differential equation of fractional order in both positive and negative parts of the multidimensional rectangular domain under consideration. This mixed type of equation, with respect to redefinition functions, is a nonlinear Fredholm type integral equation. The fractional Caputo operators' orders are smaller in the positive part of the domain than the orders of Caputo operators in the negative part of the domain under consideration. Using the method of Fourier series, two systems of countable systems of ordinary fractional integro differential equations with degenerate kernels and different orders of integro differentation are obtained. Furthermore, a method of degenerate kernels is used. In order to determine arbitrary integration constants, a linear system of functional algebraic equations is obtained. From the solvability condition of this system are calculated the regular and irregular values of the spectral parameters. The solution of the inverse problem under consideration is obtained in the form of Fourier series. The unique solvability of the problem for regular values of spectral parameters is proved. During the proof of the convergence of the Fourier series, certain properties of the Mittag Leffler function of two variables, the Cauchy Schwarz inequality and Bessel inequality, are used. We also studied the continuous dependence of the solution of the problem on small parameters for regular values of spectral parameters. The existence and uniqueness of redefined functions have been justified by solving the systems of two countable systems of nonlinear integral equations. The results are formulated as a theorem.
A solar dish Stirling engine combined humidification dehumidification desalination cycle for cleaner production of cool, pure water, and power in hot and humid regions
Year: 2020

Zero energy building (ZEB) is a promising solution for dealing with the current issues of high pollutant gas emissions and substantial energy load, which is made possible by applying renewable energy resources and energy storage technologies. This paper proposes an innovative design of combined cooling, potable water and power ZEB using solar irradiance, which utilizes a solar dish Stirling engine for cogeneration of power and heat. The proposed structure uses the power output of the Stirling engine to drive the air blower and provide the energy load of the building. Also, to drive the water desalination process, the heat outlet of the Stirling cycle is utilized as a clean and sustainable energy resource. In a general description, the proposed design links a closed air open water humidification dehumidification (HDH) desalination process to solar Stirling engine and evaporator heat exchanger that makes the capability of attaining heat wastage during the power supply operation of the power unit and the building air conditioning apparatus. A nonlinear problem is simulated using a generalized algebraic mathematical modeling system and engineering equation solver to demonstrate the feasibility and robust performance of the proposed system in satisfying the cool, pure water and the electricity demands of a hotel building located in East Azerbaijan Iran.
Direito a privacidade dos individuos na Lei Geral de Protecao de Dados no 13.709/2018 LGPD
Year: 2020

Com a expansao dos meios tecnologicos a vida das pessoas acabou sendo facilitada de maneira bem expressiva, sendo que diversas acoes podem ser desencadeadas por meio da internet, como, por exemplo, manter relacao de proximidade com amigos. Ocorre que esta comodidade, muito embora seja interessante para o ser humano, por outro lado, deve se atentar para o fato de que a privacidade dos individuos esta sendo cada vez mais exposta. Assim, foi promulgada a Lei 13.709, de 2018, conhecida como Lei Geral de Protecao de Dados (LGPD) que traz em seu bojo alguns aspectos para a concretizacao da preservacao dos direitos das pessoas, sob pena de incorrer em responsabilidade.
Fungal biosorption an alternative to meet the challenges of heavy metal pollution in aqueous solutions
Venue: Environmental technology
Year: 2011

The removal of heavy metal from the environment, especially wastewater, is now shifting from the use of conventional methods to the use of biosorption, which may be defined as the binding and concentration of selected heavy metal ions or other molecules on to certain biological material. Although most biosorption research concerns metal and related pollutants, including radionuclides, the term is now applied for particulates and all manner of organic pollutants as well. Such pollutants can be in gaseous, soluble and insoluble forms. Biosorption is a physical process carried out through mechanisms such as ion exchange, surface complexation and precipitation. It is a property of both living and dead organisms (and their components) and has been heralded as a promising biotechnology for pollutant removal from solution. Various biomasses such as plant products (tree bark, peanut skin, sawdust, plant weeds etc. have been tested for metal biosorption with very encouraging results. In this comprehensive review, biosorptive ability of fungal biomass toward heavy metals is emphasized. A detailed description of adsorption properties and mode of action of fungal biosorbents is offered in order to explain the heavy metal selectivity displayed by these biosorbents. The cell structure and cell wall of the fungal cell is evaluated in terms of metal sequestration. The parameters influencing the passive uptake of pollutants are analysed. The binding mechanism is discussed, including the key functional groups involved in the process. Quantification of metal biomass interactions is fundamental to evaluation of potential implementation strategies; hence sorption isotherms and sorption kinetics, as well as models used to characterize fungal biosorbent sorption, are reviewed. Despite the continuing dramatic increase in published research on biosorption, there has been little or no exploitation in an industrial context. Thus, the current status and future directions regarding biosorption at an industrial level are discussed. A systematic comparative review of the literature, based on the metal binding capacity of fungal biomass under different conditions, is also provided. The problems associated with fungal biosorption are analysed and suitable remedies are discussed. Thus, this article reviews the achievements and current status of fungal biosorption technology and hopes to provide insights into future research.
A novel caching scheme for the backbone of Named data networking
Venue: 2013 IEEE International Conference on Communications (ICC)
Year: 2013

Internet traffic has been exponentially growing with the increasing demand of content dissemination. This explosive growth in traffic poses a significant challenge to the networks, especially backbones. To address the challenge, the emerging content oriented Named Data Networking (NDN) has been proposed due to its attractive advantages, such as network load reduction, low dissemination latency and energy efficiency. To achieve these benefits from NDN paradigm, the content caching strategy plays the most important role. In this paper, we present a popularity based coordinated caching scheme with the objective of eliminating both the inter domain and intra domain redundant traffic of a backbone network. In this design, the global content popularity is obtained by the weighted aggregation of local content popularity at the routers, then the cache placement can be calculated based on the access cost guided by the global content popularity. We test our caching scheme on the publicly available backbone networks: Abilene and GEANT. Simulation results show that the proposed caching scheme achieves around 30% higher cache hit rate and 20% more traffic reduction, compared with the widely used Leaving Copies Everywhere (LCE) and Random Cache (RanCache) scheme.
Food industry spoilage fungi control through facility sanitization
Venue: Current Opinion in Food Science
Year: 2019

The choice of sanitizing agents with adequate antifungal activity is a relevant step for the control of losses related to fungal spoilage in the food industry. Spoilage fungi usually gain access to the premises through contaminated raw materials. These organisms disperse easily through the air and can deposit themselves onto the surface of freshly made products. If they find the proper conditions for growth, they will form colonies that release more fungal propagules into the environment. Therefore, adequate hygiene of the industrial environment is of extreme relevance to prevent and control fungal deterioration in the food industry. This work presents recent information on the antifungal activity of different classes of commercial sanitizers with permitted use in the food industry against the main fungi involved in spoiling bakery, dairy, and meat products.
Real Effects of Foreign Exchange Risk Migration: Evidence from Matched Firm Bank Microdata
Year: 2020

When firms trade forward contracts with banks to protect foreign currency cash flows against exchange rate movements, foreign exchange risk migrates to the banking sector. We show how this migrated risk may induce systemic repercussions with severe implications for the real economy. For identification, we exploit the Brexit referendum in June 2016 as a quasi natural experiment in combination with detailed microdata on forward contracts and the credit register in Germany. Before the referendum, firms substantially increased their use of derivatives in response to the heightened uncertainty; banks, in providing these contracts, did not fully intermediate the risk and retained a large share of it on their own books. The depreciation of the British pound in response to the referendum's outcome posed a shock to the capital of ex ante exposed banks. Banks, especially weakly capitalized ones, absorbed these losses by cutting back credit to all firms, including those unlikely to have had any exchange rate exposure to begin with. Firms that had ex ante borrowing relationships with banks facing losses experienced a larger reduction in credit and a greater decline in investment compared with their industry peers, thereby contributing to the aggregate investment contraction. We also find these effects to be more pronounced for small firms, which is consistent with credit market frictions being rooted in asymmetric information problems.
Knowledge Discovery in Smart City Digital Twins
Venue: HICSS
Year: 2020

Despite the abundance of available urban data and the potential for reaching enhanced capabilities in the decision making and management of city infrastructure, current data driven approaches to knowledge discovery from city data often lack the capacity for collective data exploitation. Loosely defined data interpretation components, or disciplinary isolated interpretations of specific datasets make it easy to overlook necessary domain expertise, often resulting in speculative decision making. Smart City Digital Twins are designed to overcome this barrier by integrating a more holistic analytics and visualization approach into the real time knowledge discovery process from heterogeneous city data. Here, we present a spatiotemporal knowledge discovery framework for the collective exploitation of city data in smart city digital twins that incorporates both social and sensor data, and enables insights from human cognition. This is an initial step towards leveraging heterogeneous city data for digital twin based decision making.
The magnetic fingerprint of dithiazolyl based molecule magnets.
Venue: Physical chemistry chemical physics PCCP
Year: 2018

Magnetic bistability in organic radical based materials has attracted significant interest due to its potential application in electronic devices. The first principles bottom up study herein presented aims at elucidating the key factors behind the different magnetic response of the low and high temperature phases of four different switchable dithiazolyl (DTA) based compounds. The drastic change in the magnetic response upon spin transition is always due to the changes in the JAB magnetic interactions between adjacent radicals along the p stacks of the crystal, which in turn are driven mostly by the changes in the interplanar distance and degree of lateral slippage, according to the interpretation of a series of magneto structural correlation maps. Furthermore, specific geometrical dispositions have been recognized as a ferromagnetic fingerprint in such correlations. Our results thus show that an appropriate substitution of the chemical skeleton attached to the DTA ring could give rise to new organic materials with dominant ferromagnetic interactions.
Investigation of the Prediction Correlations for the Flow Through Rotating Orifices in the Gas Turbine Secondary Air Flow System
Year: 2013

The secondary air flow system of a gas turbine cools and seals those parts of the turbine which would otherwise be exposed to the high temperatures, resulting in their life reduction or even failures. At the same time, excessive secondary air flow hinders the performance of the engine. Accurate analysis of the secondary system is therefore necessary to safeguard the reliable design of the engine and accurate life predictions. The secondary system is analyzed through the flow network analysis which comprises of chambers or cavities connected through flow passages or restrictions. There are significant number of locations where the air passes through stationary or rotating holes, e.g. the pre swirl nozzles and the turbine blade receiver holes respectively.The accuracy of the flow prediction depends on the accuracy of the orifice discharge coefficient. This paper provides a detailed assessment of the available discharge coefficient correlations. The discharge coefficient has been found to be dependent on the geometric parameters (viz. length, inlet radius, chamfer) and the amount of cross flow at the orifice entrance. The cross flow may result from the relative tangential velocity between the orifice and the air or the inclination of the inlet flow with respect to the orifice axis. In this study, it was found that the discharge coefficient correlations provide similar predictions for flows without any cross flow. However, significant deviations are seen in the predictions for the cases involving cross flow. To identify the most accurate correlation for secondary flow application, a thorough assessment was performed using the static and the rotating test data available in the literature. In addition to the comparison using available experimental data, a CFD study was performed to independently assess the correlations. This exercise led to the identification of the most suitable correlation for our application.
Ovlivneni jakostnich parametru drubeziho masa netradicnimi krmivy
Year: 2017

Tato bakalarska prace se zabyva vlivem netradicnich krmiv na jakostni parametry drubeziho masa. V soucasne dobe se stale hledaji netradicni krmiva, ktera by mohla zlepsit kvalitu drubeziho masa nebo snizit celkovou cenu krmiva. Z hlediska fyzikalnich vlastnosti se drubezi maso vlivem netradicnich krmiv lisi v pH, ztrate masove stavy a pevnosti ve strihu. Ztratu masove stavy snizuje pridavek ptaciho zobu leskleho, brokolice nebo trapatky nachove do krmiva. Pevnost drubeziho masa ve strihu snizuje pridavek cesneku nebo cesnekove slupky v krmivu. Nutricni hodnota drubeziho masa se lisi v obsahu tuku, cholesterolu, bilkovin a popelovin. Obsah popelovin zvysuje pridavek guarove moucky a cukroveho sirupu. Senzoricke vlastnosti jsou odlisne predevsim ve svetlosti barvy drubeziho masa, dale v krehkosti, stavnatosti, chuti a chutnosti. Z technologickych vlastnosti se lisi vaznost drubeziho masa, ktera se pridavkem trapatky nachove v krmivu zvysuje.
RANCANG BANGUN ALAT UJI JOMINY DAN PENGARUH PENGUJIAN JOMINY TERHADAP KEKERASAN MATERIAL BAJA AISI 1045
Year: 2019

Penelitian ini mengenai rancang bangun alat uji jominy yang dibuat dengan memenuhi standar ASTM A255. Desain alat uji jominy yang dibuat yaitu dengan mengutamakan aman, mudah dalam penggunaan, mudah dipahami, ekonomis dan mudah dalam perawatan. alat uji jominy kemudian diuji coba pada spesimen Baja AISI 1045 yang diberikan perlakuan panas dengan mengikuti prosedur pengujian yang telah ditetapkan. Hasil rancangan alat uji Jominy didapatkan kecepatan aliran fluida dalam rangkaian pipa 1,47 m/detik, friction loss dari pipa yaitu 0,0017 m dan friction loss dari fitting 0,019 m sehingga head total pompa berkisar 1,0807 m dan daya yang dibutuhkan sebesar 5 Watt. Dan berdasarkan hasil percobaan dan pengamatan dengan sampel material baja AISI 1045 setelah dipanaskan dengan suhu 870o dan holding time selama 30 menit adalah harga kekerasan tertinggi 62,4 HRC pada specimen 2 dan terendah 25,5 HRC pada spesimen 3. Dari hasil ini membuktikan bahwa adanya perubahan kekerasan material yang sebelumnya berkisar 22 23 HRC
Visual Narratives of History A Close Reading into the Portrayal of World War II in the Paintings of Paul Nash, Eric Kennington and Graham Sutherland: Aptitude for Report or Tendency to Mislead.
Year: 2017

The present thesis aims at providing an insight on the extent to which official British war paintings were capable of producing a pictorial record of Britain during World War Two. Through a qualitative research approach and a comprehensive analysis of selected paintings, this dissertation will point out the strengths and weaknesses of using art as a tool of reportage. The focus will be mainly centralized on three painters: Paul Nash, Eric Kennington and Graham Sutherland who signed contracts as official artists for the War Artists Advisory Committee. A comprehensive analysis will allude to both the propagandist as well as the informative task these paintings carried on. The analysis of selected paintings will be the backbone of this dissertation. Iconology will be applied to read artworks and assess their historical value. This study will also involve a comparison between artists in terms of style, backgrounds and experiences. Similarities as well as disparities will be pointed out and their effect on the artistic output will be examined. Despite not being the focal point of this research, this comparison will highlight the reasons why some art may be referred to as a record of events and other may not. Hence, this thesis will go beyond descriptive analysis and observation into a critical framework to confirm the ambivalent aspect of official war paintings as a recording tool. Depictions of airplanes by Nash, portraits of Royal Army Force personnel by Kennington as well as drawings of the Blitz by Sutherland will be closely examined. These works of arts, purchased by the WAAC amid World War Two, will be considered as a visual narrative of the conflict in Britain. The accuracies and inaccuracies of this latter will be traced back to the style, genre and choice of colors each painter used. The examination will answer the integral question of this dissertation: Are paintings capable of documenting history or do they often mislead due to overwhelming artistic inclinations?
A Convolutional Neural Network Approach to Recognize the Insect: A Perspective in Bangladesh
Venue: 2019 8th International Conference System Modeling and Advancement in Research Trends (SMART)
Year: 2019

In Bangladesh huge amount of agricultural products are destroying by the pests every year due to lack of poor knowledge about pest detection. As we know that manually identification is difficult for a farmer. So, classic pest detection and identification can ensure excellent productivity. This would be a fulfil research in the technical area of computer vision. The dataset is typically random cropping of square size images together with grayscale color and brightness shifts are used here. Here Convolutional Neural Network (CNN) will be used to do the image recognition and the algorithm will provide an optimal architecture for image recognition. The big idea behind CNNs is that a local understanding of an image is good enough. The research contains the proportions of validation accuracy of 93.46% This approach resulted in the agriculture sector that will help a farmer to recognize the insect from harvest. The computer vision and object recognition can be used with image processing to create an interactive and enlarge user experience of the real world. This research aims to demonstrate the possibility and test the performance of the project which only focuses on insect detection in crop plants that recognize the pest which can help a farmer to get immediate solution of harvest problem.
Ventilator Associated Pneumonia: Depends on Your Definition
Venue: The American surgeon
Year: 2012

Reduction of hospital acquired infections is a patient safety goal and regularly monitored by Performance Improvement committees. There is discordance between the ventilator associated pneumonia (VAP) rate reported by the Infection Control Committee (ICC) and that observed by our Trauma Service. To investigate this difference, a retrospective evaluation of cases of VAP diagnosed on a single service was undertaken. A prospectively collected database was queried for VAP in intensive care unit patients between January 2010 and June 2011. This was compared with the list of mechanically ventilated patients provided by the ICC. Comparison for criteria used to diagnose pneumonia, ventilator day of the diagnosis, was recorded. The ICC identified two VAPs from 136 potential patients compared with the Trauma Service identifying 36 VAPs. A difference in diagnostic criteria between the ICC and the Trauma Service focused on use of the National Nosocomial Infection Survey (NNIS) algorithm versus quantitative microbiology from bronchoalveolar lavage specimens. Thirty five of 36 Trauma Service VAPs were not identified as VAPs by the NNIS algorithm as a result of the chest radiographs. Application of differing definitions of VAP results in markedly different VAP rates. The difference has significant implications as infection rates are increasingly reported as a quality metric.
Effects of Wing on Autogyro Longitudinal Stability
Year: 2014

Based on a gyroplane,a nonlinear mathematical model of coupled equations described by the state space method is presented in this paper in order to study the effects of the wing on autogyro longitudinal stability.The model consists of an aerodynamic model(which includes an autorotating rotor,a fuselage,apropeller,and a wing and a tail aerodynamic model),a dynamic inflow model and a stability analysis model.The model is applied to study the sample autogyro and sample gyroplane longitudinal stability.By contrastive analysis,the results show that the wing is favorable for phugoid mode and short period mode stability.It is unfavorable for rotor speed mode stability but the rotor blade tip weight could be increased to improve the mode stability when the gyroplane is designed.The wing longitudinal position has a significant influence on the autogyro longitudinal stability.When the wing longitudinal position satisfies the trim constraints,the more rearward the wing is located,the better is the angle of attack stability of the gyroplane,but the worse is its rotor speed stability.The wing longitudinal position should be selected eclectically by considering these two factors when a gyroplane is designed.