scholarly journals System characterization of dynamic biological systems through improved data analysis.

2021 ◽  
Author(s):  
Gerben R Stouten ◽  
Sieze Douwenga ◽  
Carmen Hogendoorn ◽  
Robbert Kleerebezem
Keyword(s):  
Data Analysis ◽  
Process Model ◽  
System Analysis ◽  
Close Monitoring ◽  
Line System ◽  
Wide Range ◽  
System Characterization ◽  
On Line ◽  
Batch Bioreactors

Determining the functional development and dominant competitive strategy in microbial community enrichments is complicated by the extensive measurement campaigns required for off-line system analysis. This study demonstrates that detailed system characterization of aerobic pulse fed enrichments can be established using on-line measurements combined with automated data analysis. By incorporating the physicochemical processes in on-line data processing with a Particle Filter and kinetic process model, an accurate reconstruction of the dominant biological rates can be made. We hereby can differentiate between storage compound production and biomass growth in sequencing batch bioreactors. The method proposed allows for close monitoring of changes in functional behavior of long-running enrichment cultures, without the need for off-line samples, therewith enabling the identification of new insights in process dynamics with a minimal experimental effort. Even though a specific example application of the method proposed is described here, the approach can readily be extended to a wide range of dynamic experimental systems that can be characterized based on on-line measurements.

scholarly journals Energy Use in Residential Buildings: Characterisation for Identifying Flexible Loads by Means of a Questionnaire Survey

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2055 ◽  
Author(s):  
Francesco Mancini ◽  
Gianluigi Lo Basso ◽  
Livio De Santoli
Keyword(s):  
Data Analysis ◽  
Energy Use ◽  
Residential Buildings ◽  
Automation System ◽  
Research Activity ◽  
Flexible Loads ◽  
On Line ◽  
House Floor ◽  
Statistical Sample

This work shows the outcomes of a research activity aimed at the energy characterization of residential users. Specifically, by data analysis related to the real energy consumption of sample buildings, the flexible loads amount has been identified so as to investigate on the opportunity to implement a demand/response (DR) program. The most meaningful input data have been collected by an on-line questionnaire created within an Excel spreadsheet allowing one to simulate and compare the calculations with the actual dwellings’ consumption; 412 questionnaires have been used as statistical sample and simulations have been performed based on single-zone dynamic model. Additionally, once the energy consumptions have been sorted by the different services, reference key performance indicators (KPIs) have been also calculated normalising those ones by people and house floor surface. From data analysis, it emerges how the Italian residential users are not very electrified. Furthermore, the flexible loads are low and, implementing minor maintenance interventions, the potential of flexibility can decrease up to 20%. For that reason, the current research can be further developed by investigating on suitable flexibility extensions as well as on the automation system requirements which is needed managing the flexible loads.

Current Chemistry: Characterization of Thin-Film Surfaces and Interfaces Using Neutron Reflectometry

2001 ◽  
Vol 54 (8) ◽  
pp. 487 ◽  
Author(s):  
Michael James
Keyword(s):  
Thin Film ◽  
Data Analysis ◽  
Experimental Design ◽  
Extreme Environments ◽  
Neutron Reflectometry ◽  
Buried Interfaces ◽  
Surfaces And Interfaces ◽  
Wide Range ◽  
Non Destructive

Neutron reflectometry has become an increasingly important technique in the characterization of thin-film surfaces and interfaces. Recent advances in instrumentation, experimental design, sample environments and methods of data analysis now make it possible to obtain an angstrom-precision depth profile of the film composition. Neutrons are non-destructive and highly penetrating which makes them ideal probes for the study of buried interfaces as well as surfaces under a wide range of extreme environments. Isotopic H/D substitution (particularly in colloidal, polymeric or biological systems) provides a unique tool for selectively labelling different components of complex planar architectures. The fundamental aspects of neutron reflectometry are discussed, and the utility of this technique is illustrated by a review of several recent studies.

scholarly journals EQUIVALENCE IN NEWS HEADLINESTRANSLATION: ENGLISH HEADLINES RENDERED INTO BAHASA INDONESIA IN BBC WEB NEWS

2020 ◽  
Vol 6 (2) ◽  
pp. 251-272
Author(s):  
Diah Supatmiwati ◽  
Zainudin Abdussamad
Keyword(s):  
Translation Studies ◽  
Language Structure ◽  
Wide Range ◽  
On Line ◽  
Degrees Of Equivalence ◽  
Web News ◽  
News Headlines ◽  
Bahasa Indonesia

Equivalence is the leading subject in translation studies; hence, a wide range of hypotheses on equivalence have been discussed in detail within this field translation over the recent decades. Equivalence in translation is influenced by many different factors, i.e., parts of importance among words and articulations, language structure and participants in various communicative circumstances, semantics, pragmatics, etc. The concept of equivalence with the focus on equivalence degrees is provided; the overview and characterization of the main features, as well as specifics of translation of media language (headlines in particular), are presented in the article as well. The paper focuses on the equivalence in the translation of headlines of on-line news articles since headlines are considered as crucial and the most important part of news articles. The translation of news headlines across certain journalistic cultures, specifically focusing on headlines translated from English into Bahasa Indonesia. Headlines are an extraordinary type of text, which are considered a separate genre on their own. Since a headline is an entrance to the news details, journalists have to utilize different techniques to make the headline concise, effective, and eye-catching to the reader. 40 English headlines and their Indonesian translations have been selected for the analysis which is performed according to the degrees of equivalence: optimum translation, partial equivalence, zero equivalence. Partial equivalence is divided into two narrower subtypes which are: near-optimum and weak translation. The results show that over some translation procedures have been implemented in rendering headlines.   

scholarly journals Possibility Analysis of Using Acoustic Emission for Monitoring Technical Condition of Compressed Air Installation of 3AL25/30 Engine

2019 ◽  
Vol 49 (3) ◽  
pp. 1-15
Author(s):  
Krzysztof Dudzik ◽  
Adam Charchalis
Keyword(s):  
Acoustic Emission ◽  
System Analysis ◽  
Technical Condition ◽  
University Research ◽  
Compressed Air ◽  
Normal Operation ◽  
Test Results ◽  
Line System ◽  
Engine Room ◽  
On Line

Abstract This paper presents the methodology and research results of monitoring of compressed air starting system of 3AL25/30 engine placed in Maritime Engineering Faculty of Gdynia Maritime University. Research was carried out using a set of acoustic emission Vallen System. Analysis of recorded parameters revealed leakage in the installation – damage of one of the valves. The test results indicate that the AE method can be useful for monitoring the technical condition of pressure systems of engines and devices in a ship's engine room during normal operation as an on-line system.

Recent Progress and Plans in Computer-Controlled High Resolution Electron Microscopy

1990 ◽  
Vol 48 (1) ◽  
pp. 154-155
Author(s):  
W.J. de Ruijter ◽  
Peter Rez ◽  
David J. Smith
Keyword(s):  
Electron Microscopy ◽  
Digital Processing ◽  
High Resolution Electron Microscopy ◽  
Objective Lens ◽  
Linear Filter ◽  
Contrast Transfer Function ◽  
Image Displacement ◽  
Spatially Resolved ◽  
Wide Range ◽  
On Line

Digital computers are becoming widely recognized as standard accessories for electron microscopy. Due to instrumental innovations the emphasis in digital processing is shifting from off-line manipulation of electron micrographs to on-line image acquisition, analysis and microscope control. An on-line computer leads to better utilization of the instrument and, moreover, the flexibility of software control creates the possibility of a wide range of novel experiments, for example, based on temporal and spatially resolved acquisition of images or microdiffraction patterns. The instrumental resolution in electron microscopy is often restricted by a combination of specimen movement, radiation damage and improper microscope adjustment (where the settings of focus, objective lens stigmatism and especially beam alignment are most critical). We are investigating the possibility of proper microscope alignment based on computer induced tilt of the electron beam. Image details corresponding to specimen spacings larger than ∼20Å are produced mainly through amplitude contrast; an analysis based on geometric optics indicates that beam tilt causes a simple image displacement. Higher resolution detail is characterized by wave propagation through the optical system of the microscope and we find that beam tilt results in a dispersive image displacement, i.e. the displacement varies with spacing. This approach is valid for weak phase objects (such as amorphous thin films), where transfer is simply described by a linear filter (phase contrast transfer function) and for crystalline materials, where imaging is described in terms of dynamical scattering and non-linear imaging theory. In both cases beam tilt introduces image artefacts.

Mass Spectrometry and Integrated Virus Detection System Characterization of MS2 Bacteriophage

2005 ◽  
Author(s):  
Rabih E. Jabbour ◽  
Deborah Kuzmanovic ◽  
Patrick E. McCubbin ◽  
Ilya Elashvili ◽  
Charles H. Wick
Keyword(s):  
Mass Spectrometry ◽  
Detection System ◽  
Virus Detection ◽  
Ms2 Bacteriophage ◽  
System Characterization
Sign in / Sign up

Export Citation Format

Share Document