nils-herrmann/clean_scirepeval huggingface dataset:
Simulation of breaking waves using the high order spectral method with laboratory experiments: wave breaking energy dissipation
Venue: Ocean Dynamics
Year: 2017

We examine the implementation of a wave breaking mechanism into a nonlinear potential flow solver. The success of the mechanism will be studied by implementing it into the numerical model HOS NWT, which is a computationally efficient, open source code that solves for the free surface in a numerical wave tank using the high order spectral (HOS) method. Once the breaking mechanism is validated, it can be implemented into other nonlinear potential flow models. To solve for wave breaking, first a wave breaking onset parameter is identified, and then a method for computing wave breaking associated energy loss is determined. Wave breaking onset is calculated using a breaking criteria introduced by Barthelemy et al. () and validated with the experiments of Saket et al. ( 2017) Wave breaking energy dissipation is calculated by adding a viscous diffusion term computed using an eddy viscosity parameter introduced by Tian et al. (Phys Fluids 20(6) 066,604, 2008, Phys Fluids 24(3) 2012) which is estimated based on the pre breaking wave geometry. A set of two dimensional experiments is conducted to validate the implemented wave breaking mechanism at a large scale. Breaking waves are generated by using traditional methods of evolution of focused waves and modulational instability, as well as irregular breaking waves with a range of primary frequencies, providing a wide range of breaking conditions to validate the solver. Furthermore, adjustments are made to the method of application and coefficient of the viscous diffusion term with negligible difference, supporting the robustness of the eddy viscosity parameter. The model is able to accurately predict surface elevation and corresponding frequency/amplitude spectrum, as well as energy dissipation when compared with the experimental measurements. This suggests the model is capable of calculating wave breaking onset and energy dissipation successfully for a wide range of breaking conditions. The model is also able to successfully calculate the transfer of energy between frequencies due to wave focusing and wave breaking. This study is limited to unidirectional waves but provides a valuable basis for future application of the wave breaking model to a multidirectional wave field. By including parameters for removing energy due to wave breaking into a nonlinear potential flow solver, the risk of developing numerical instabilities due to an overturning wave is decreased, thereby increasing the application range of the model, including calculating more extreme sea states. A computationally efficient and accurate model for the generation of a nonlinear random wave field is useful for predicting the dynamic response of offshore vessels and marine renewable energy devices, predicting loads on marine structures, and in the study of open ocean wave generation and propagation in a realistic environment.
Data Driven Schema Matching in Agricultural Learning Object Repositories
Venue: MTSR
Year: 2012

As the wealth of structured repositories of educational content for agricultural object is increasing, the problem of heterogeneity between them on a semantic level is becoming more prominent. Ontology matching is a technique that helps to identify the correspondences on the description schemas of different sources and provide the basis for interesting applications that exploit the information in a linked fashion. The present paper presents a data driven approach for discovering matches between different classification schemas. The approach is based on content analysis and linguistic processing in order to extract information in the form of relation tuples, use the extracted information to associate the content of different repositories and match their underlying classification schemas based on the degree of content similarity. The preliminary results verified the validity of the approach, as both experiments produced a semantically valid matching in 68% of the examined classes. The results also exposed the need for refinements on the linguistic processing of the available textual information and on the definition of relation similarity, as well as, the need to exploit structural information in order to move from discovering semantically valid matches to effectively handling class specializations and generalizations.
Effects of various modeling uncertainty parameters on the seismic response and seismic fragility estimates of the aging highway bridges
Venue: Bulletin of Earthquake Engineering
Year: 2020

This paper proposes an alternative time dependent seismic fragility assessment framework for aging highway bridges considering the non uniform chloride induced corrosion and various modeling uncertainty parameters. Firstly, sensitivity analysis with the tornado diagram technique is performed to determine the sensitivity of some typical bridge engineering demand parameters (EDPs) to 22 modeling related uncertain parameters, and then 10 critical parameters are identified. Subsequently, based on a series of nonlinear time history analyses (NLTHAs) on the sample models generated by using the Latin hypercube sampling (LHS) method, comparative studies for the time invariant and time evolving seismic response, as well as the time dependent seismic fragility estimates incorporating different levels of uncertainty are performed, respectively. It is concluded that (1) the uncertainty of the modeling related uncertain parameters may lead to the difference in the trajectory of seismic hysteretic response for a given bridge member, whereas the variation of the peak value of seismic response may result from the couple contributions of the uncertainty of ground motions and modeling related parameters; (2) the inclusion of only ground motion uncertainty is inadequate and inappropriate, and the proper way is to incorporate the uncertainty of the identified critical modeling parameters and ground motions into the time evolving seismic response and the time dependent seismic fragility assessment of the deteriorating highway bridges.
Vergleich von Complex Event Processing Ansatzen fur Business Activity Monitoring
Year: 2010

Das Fazit gliedert sich in die vor dem Test aufgestellten Kriterien auf. Installation Dank mitgeliefertem Application Server ist IEP mit Abstand am einfachsten zu installieren. Fur Esper und Streamcruncher ist im Regelfall das Schreiben eigener Software notwendig, was zwar hohere Flexibilitat ermoglicht, allerdings aber auch einen deutlich hoheren Aufwand darstellt. Ereignisanfragesprachen Wahrend die Ereignisanfrage von Streamcruncher nur muhsam zu verwenden ist, merkt man der Esper EPL die Reife der Sprache an. Sowohl in Machtigkeit als auch in Verstandlichkeit und Dokumentation ist die EPL klar uberlegen. IEP verfolgt mit der grafischen Oberflache einen anderen Ansatz, der flexibler ist als einzelne Regeln und sich auserdem intuitiv bedienen lasst. Die Machtigkeit dieses Ansatzes genugt, um das Beispielszenario zu implementieren. Da sich mit Streamcruncher das Beispielszenario nicht verwirklichen lies, liegen IEP und Esper hier klar vorne.
ICT: System Description for CoNLL 2012
Venue: EMNLP CoNLL Shared Task
Year: 2012

In this paper, we present our system description for the CoNLL 2012 coreference resolution task on English, Chinese and Arabic. We investigate a projection based model in which we first translate Chinese and Arabic into English, run a publicly available coreference system, and then use a new projection algorithm to map the coreferring entities back from English into mention candidates detected in the Chinese and Arabic source. We compare to a baseline that just runs the English coreference system on the supplied parses for Chinese and Arabic. Because our method does not beat the baseline system on the development set, we submit outputs generated by the baseline system as our final submission.
The types, frequencies, and findability of disciplinary grey literature within prominent subject databases and academic institutional repositories
Year: 2018

In many disciplines grey literature, or works that are more ephemeral in nature and are not typically published through traditional scholarly channels, are heavily used alongside traditional materials and sources. We were interested in the type and frequency of grey literature in subject databases and in North American institutional repositories (IRs) as well as what disciplines use grey literature.  Over 100 subject databases utilized by academic researchers and the IRs of over 100 academic institutions were studied. Document type, search capabilities, and level of curation were noted.  Grey literature was present in the majority (68% of the literature databases and almost all IRs (95% contained grey literature.  Grey literature was present in the subject databases across all broad disciplines including arts and humanities. In these resources the most common types of grey literature were conference papers, technical reports, and theses and dissertations. The findability of the grey literature in IRs varied widely as did evidence of active collection development.  Recommendations include the development of consistent metadata standards for grey literature to enhance searching within individual resources as well as supporting future interoperability. An increased level of collection development of grey literature in institutional repositories would facilitate preservation and increase the findability and reach of grey literature.
Automatic Patch Generation for Buffer Overflow Attacks
Year: 2007

Control hijacking attacks exploit vulnerabilities in network services to take control of them and eventually their underlying machines. Although much work has been done on detection and prevention of control hijacking attacks, most of them did not address the problem of repairing the attacked network services so as to prevent the same attacks from recurring. Ideally, post attack repair should consist of an attack signature generation component that creates a filtering rule for front end firewall or intrusion prevention system to block the detected attack and its variants, and a patch generation component that creates a fix to permanently eliminate the vulnerabilities that the detected attack exploits. This paper describes the design, implementation and evaluation of a program transformation and execution trace analysis system called PASAN that can automatically instrument the source code of network service programs in such a way that it can detect control hijacking attacks and automatically generate patches to seal the vulnerability being exploited by the detected attack. We have implemented the first PASAN prototype as a GNU C compiler extension that aims at stack based buffer overflow attacks but could be easily generalized to accommodate other control hijacking attacks. Testing this prototype with seven network daemon programs with known vulnerabilities show that the automatically generated patches can successfully fix the vulnerability. In addition, these patches are similar in their structure to those that are manually created. The run time performance overhead of application programs instrumented by PASAN is between 10% and 23% except two programs, whose CPU consumption is low.
Impact of Trust and Privacy Concerns on Technology Acceptance in Healthcare: An Indian Perspective
Venue: International Journal of Medical Informatics
Year: 2020

This paper augments the technology acceptance model (TAM) by empirically investigating the influence of behavioral traits (privacy concerns and trust) and cognitive beliefs (perceived usefulness and perceived ease of use) on patients' behavioral intention to accept technology in healthcare service delivery. Despite increased emphasis on healthcare service delivery, there has been limited studies as to how various behavioral constructs are related to adoption of new technology in healthcare sector. To this end, and to develop meaningful insights, a conceptual model integrating behavioral constructs with constructs related to technology acceptance model is devised. The aim here is essentially to understand relationships that predict patients' acceptance of technology in healthcare services. The devised model is tested on responses obtained from survey of 416 patients availing healthcare service at various primary health centers in New Delhi, India. Structural equation modeling (SEM) is employed to conceptualize the model and validate nine hypotheses entailing key constructs. The results indicate that perceived usefulness, perceived ease of use, trust and privacy concern are direct predictors of patients' behavior to accept technology in availing healthcare services. In summary, this research provides an empirical contribution to the literature on effect of trust and privacy concerns on acceptance of technology in healthcare.
The German Socio Economic Panel Study (SOEP) Evolution, Scope and Enhancements
Year: 2007

After the introduction in Section 2, we very briefly sketch out current theoretical and empirical developments in the social sciences. In our view, they all point in the same direction: toward the acute and increasing need for multidisciplinary longitudinal data covering a wide range of living conditions and based on a multitude of variables from the social sciences for both theoretical investigation and the evaluation of policy measures. Cohort and panel studies are therefore called upon to become truly interdisciplinary tools. In Section 3, we describe the German Socio Economic Panel Study (SOEP) in which we discuss recent improvements of that study which approach this ideal and point out existing shortcomings. Section 4 concludes with a discussion of potential future issues and developments for SOEP and other household panel studies.
Ecotourism Behavior of Nature Based Tourists: An Integrative Framework
Year: 2018

This study aims to examine an ecotourism behavioral model using environmental attitude, subjective norms, perceived behavioral control, perceived ecotourism usefulness, biospheric value, ecotourism self identity, ecotourism behavioral intention, and ecotourism behavior among nature based tourists. The analysis tested ten hypotheses and integrated the theory of planned behavior, the technology acceptance model, value belief norm theory, and social identity theory to provide an integrated ecotourism behavioral model for four important Taiwanese nature based tourism destinations. This integrated framework provides an approach to creating critical insights for nature based tourism researchers and managers to accurately grasp the factors that influence ecotourism behavior. Managers of nature based tourism destinations should offer ecotourism programs that focus on ecotourism experiences that increase ecotourism behavioral intentions by increasing levels of perceived ecotourism usefulness, biospheric value, ecotourism self identity, environmental attitude, subjective norms, and perceived behavioral control, thereby enhancing ecotourism behavior at nature based tourism destinations and assisting in the development of sustainable tourism.
Resistin induces breast cancer cells epithelial to mesenchymal transition (EMT) and stemness through both adenylyl cyclase associated protein 1 (CAP1) dependent and CAP1 independent mechanisms.
Venue: Cytokine
Year: 2019

Breast cancer incidence and metastasis in postmenopausal women are known to associate with obesity, but the molecular mechanisms behind this association are largely unknown. We investigated the effect of adipokine resistin on epithelial to mesenchymal transition (EMT) and stemness in breast cancer cells in vitro. Previous reports demonstrated that the inflammatory actions of resistin are mediated by the adenylyl cyclase associated protein 1 (CAP1) which serves as its receptor. As a model for our study, we used MCF 7 and MDA MB 231 breast cancer and MCF 10A breast epithelial cells. We showed that in MCF 7 cells resistin increases the migration of MCF 7 and MDA MB 231 cells and induces the formation of cellular protrusions through reorganization of F actin filaments. Resistin upregulated the expression of mesenchymal markers involved in EMT (SNAIL, SLUG, ZEB1, TWIST1, fibronectin, and vimentin) and downregulated those of epithelial markers (E cadherin and claudin 1) Resistin also potentiated the nuclear translocation of SNAIL protein, indicating initiation of EMT reprogramming. We further induced EMT in non carcinogenic breast epithelial MCF 10A cells demonstrating that the effects of resistin on EMT were not breast cancer cell specific. In order to assess whether resistin induced EMT depends on CAP1, we used siRNA approach to silence CAP1 gene in MCF 7 cells. Results demonstrated that when CAP1 was silenced, the induction of SNAIL, ZEB1 and vimentin expression by resistin as well as SNAIL and ZEB1 nuclear translocation, were abolished. Additionally, CAP1 silencing resulted in a suppression of MCF 7 cells migration. We performed quantitative PCR array profiling the expression of 84 genes related to cancer stem cells (CSC) pluripotency and metastasis and selected a set of genes (ALDH1A1, ITGA4, LIN28B, SMO, KLF17, PTPRC, PROM1, SIRT1, and PECAM1) that were modulated by resistin. Further experiments demonstrated that the effect of resistin on the expression of some of these genes (PROM1, PTPRC, KLF17, SIRT1, and PECAM1) was also dependent on CAP1. Our results demonstrate that resistin promotes the metastatic potential of breast cancer cells by inducing EMT and stemness and some of these effects are mediated by CAP1.
Implementation of business intelligence framework for Malaysian halal food manufacturing industry towards initiate strategic financial performance management
Year: 2018

aFaculty of Information Communication Technology, Universiti Teknikal Malaysia Melaka, Malaysia bCentre for Strategic, Quality and Risk Management, Universiti Teknikal Malaysia Melaka, Malaysia cFaculty of Technology Management and Technopreneurship, Universiti Teknikal Malaysia Melaka,Malaysia dFaculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Malaysia C H R O N I C L E A B S T R A C T
Yeast cell surface display of linoleic acid isomerase from Propionibacterium acnes and its application for the production of trans 10, cis 12 conjugated linoleic acid
Venue: Biotechnology and applied biochemistry
Year: 2015

Conjugated linoleic acid (CLA) a family of geometric and positional isomers of linoleic acid, has many health promoting properties. Different isomers of CLA may have very different physiological effects. In the current work, we explore the possibility to produce single isomer of CLA by using biocatalysis based on displayed biocatalysts on the yeast cell surfaces. A reporter system used to assess gene expression and protein distribution was established by combining the egfp gene to the N terminus of Propionibacterium acnes pai gene encoding the linoleic isomerase onto vector pYD1. After induction of the yeast strains containing pYD1::egfp::pai with galactose, strong green fluorescence was observed on the surface of cells, demonstrating that the fusion protein was successfully displayed. Using the engineered strains as whole cell biocatalyst, trans 10, cis 12 CLA was detected in the reaction mixture. To improve the biocatalytic potential of this system, the first 20 amino codons of pai were modified, and the catalytic reaction conditions were optimized. Optimization of the codon usage resulted in 35% increase of CLA production, and the maximum yield of CLA was observed within 20 H in the optimal conditions: pH 7.0, 4 mg/mL linoleic acid, 37 degC. The system established in the present work can guide the development of biocatalytic strategies to produce trans 10, cis 12 CLA single isomer.
Propagazione di onde elettromagnetiche
Year: 2012

In questo capitolo, dopo aver derivato dalle equazioni di Maxwell l'equazione delle onde, viene introdotta l'onda piana e ne vengono discusse le proprieta. Successivamente e definito lo spettro di frequenza ed e ricavata la relazione che lega la durata di un impulso luminoso alla larghezza spettrale. La propagazione di onde monocromatiche viene affrontata utilizzando l'approssimazione parassiale, valida per fasci di luce che contengano raggi poco inclinati rispetto alla direzione principale di propagazione, come e il caso dei fasci laser. Nell'ambito di tale approssimazione si dimostra che le onde sferiche Gaussiane sono degli invarianti nella propagazione, la qual cosa permette di descrivere gli effetti della propagazione con semplici relazioni algebriche. Viene poi introdotta la teoria classica della diffrazione, vista come una teoria approssimata della propagazione. Si dimostra che l'approssimazione di Fresnel produce risultati equivalenti all'approssimazione parassiale. Si discute infine l'approssimazione di Fraunhofer, che viene applicata ad alcuni casi semplici. Il capitolo termina con un accenno all'ottica di Fourier.
Modeling and Control System Design of Marine Controlled Source Electromagnetic Detection Transmitter
Year: 2015

Marine electromagnetic transmitter transmits large power variable frequency electromagnetic wave to the seabed so as to obtain the submarine structure and mineral resources. The mathematical model of controlled source circuit needs to be established to realize closed loop control for increasing control precision and output transient performance of the electromagnetic wave. The operation process of controlled circuit is analyzed in continuous current mode, two equivalent switching states of controlled source circuit are obtained through the analysis of the different states of the switch in a switching period. A small signal equivalent model of the system is established using small ripple approximation. For high output voltage fluctuation problem in single loop control, double loop control strategy of voltage loop and current loop is designed. The simulation and experimental results show that, the system has the advantages of fast transient response speed and good regulation performance.
Modified high voltage conversion inverting cuk DC DC converter for renewable energy application
Venue: 2017 IEEE Southern Power Electronics Conference (SPEC)
Year: 2017

The proposed exertion represents the modified high voltage conversion Cuk converter for renewable energy application. The proposed Cuk converter is a combination of the conventional boost converter and Cuk converter. The arrangement of the proposed converter make, such as, it becomes the single controlled device DC DC topology. The voltage conversion ratio of proposed converter has increased by ten times of the conventional Cuk converter at a duty ratio of 90% The detailed analysis of the voltage conversion ratio and losses occur due to internal resistance of components is done in the paper. The current conversion ratio of proposed converter is discussed in the paper. The proposed converter is simulated in MatLab Simulink (2014) for 100W and regulated 10V input DC supply. The simulation results represent the existence and working of proposed converter.