scholarly journals N-body Simulations with Live Stellar Evolution

2009 ◽  
Vol 26 (1) ◽  
pp. 92-102 ◽  
Author(s):  
Ross P. Church ◽  
Christopher A. Tout ◽  
Jarrod R. Hurley
Keyword(s):  
Future Development ◽  
Stellar Evolution ◽  
Binary Star ◽  
Software Packages ◽  
Set Up ◽  
Model Fits

AbstractAn N-body code containing live stellar evolution through combination of the software packages nbody6 and stars is presented. Operational details of the two codes are outlined and the changes that have been made to combine them discussed. We have computed the evolution of clusters of 104 stars using the combined code and we compare the results with those obtained using nbody6 and the synthetic stellar evolution code sse. We find that, providing the physics package within stars is set up correctly to match the parameters of the models used to construct sse, the results are very similar. This provides a good indication that the new code is working well. We also demonstrate how this physics can be changed simply in the new code with convective overshooting as an example. Similar changes in sse would require considerable reworking of the model fits. We conclude by outlining proposed future development of the code to include more complete models of single stars and binary star systems.

Multi-phase information aggregation and dynamic synthetic evaluation based on grey inspiriting control lines

2014 ◽  
Vol 4 (2) ◽  
pp. 154-163 ◽  
Author(s):  
San-dang Guo ◽  
Sifeng Liu ◽  
Zhigeng Fang ◽  
Lingling Wang
Keyword(s):  
Future Development ◽  
Information Aggregation ◽  
Development Trend ◽  
Future Application ◽  
Phase Information ◽  
Content Type ◽  
Multi Stage ◽  
Comprehensive Evaluations ◽  
Set Up ◽  
Multi Phase

Purpose – The purpose of this paper is to put forward a multi-stage information aggregation method based on grey inspiriting control lines to evaluate the objects dynamically and comprehensively. Design/methodology/approach – According to the evaluation value of the objects, the positive and negative incentive lines were set up and the predicted values were solved based on the grey GM(1, 1) model, so the value with expected information could be evaluated. In the evaluation, the part above the positive incentive line should be “rewarded” and that below the negative incentive line should be “punished” appropriately. Thereby the double incentive effects of “the current development situation and future development trend” to objects could be implemented on the basis of control. Findings – This method can primarily describe the decision maker's expectancy of the development of evaluation objects and make the evaluation results have better practical application value. Research limitations/implications – Many comprehensive evaluations were always based on the past information. However, the future development trend of the evaluated object is also very important. This study can be used in the evaluation for future application and development. Originality/value – The paper succeeds in providing not only a method of multi-phase information aggregation with expectancy information, but also a simple and convenient method solving nonlinear inspiring lines objectively.

scholarly journals Geodetic VLBI Analysis at the National Geographic Institute of Spain

Proceedings ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 2
Author(s):  
Víctor Puente ◽  
Esther Azcue ◽  
Susana García-Espada ◽  
Yaiza Gómez-Espada
Keyword(s):  
Earth Orientation Parameters ◽  
Technical Aspects ◽  
National Geographic ◽  
Earth Orientation ◽  
Geodetic Vlbi ◽  
Software Packages ◽  
Station Coordinates ◽  
Set Up ◽  
Orientation Parameters ◽  
Troposphere Delays

National Geographic Institute of Spain has a strong background concerning technical aspects of geodetic VLBI. As a step forward in this field, a VLBI analysis team has been set up and tests with different software packages have been carried out. In this sense, two VLBI software packages have been used for experimentation activities in order to compare and validate IGE capability to produce accurate and consistent geodetic products, specifically Earth Orientation Parameters, station coordinates and troposphere delays. The purpose of this contribution is to present the results of these analyses, including some tests to use GNSS-based troposphere delay in VLBI processing and the study of gravitational deformation in Yebes radiotelescope.

Commissioning Diabetic Eye Screening by Optometrists: A Local Initiative at the Primary-Secondary Care Interface

1994 ◽  
Vol 1 (1) ◽  
pp. 13-15 ◽  
Author(s):  
Andrew Harris ◽  
Christopher Bonell ◽  
Tyrrell Evans ◽  
Geoffrey Roberson
Keyword(s):  
Health Services ◽  
Future Development ◽  
Secondary Care ◽  
Research Agenda ◽  
Family Health ◽  
Local Initiative ◽  
Eye Screening ◽  
Set Up ◽  
Diabetic Eye Screening ◽  
Key Questions

The rationale behind the decision of a London family health services authority (Lambeth, Southwark, and Lewisham) to embark on a programme for diabetic eye screening by optometrists is outlined, discussing the way in which the scheme was set up and its possible future development. This family health services authority brought together a range of professionals across primary and secondary care to reach agreement on development of the service, and a consensus on clinical guidelines for operation of the scheme. This was particularly difficult in an area served by four hospitals which provide care to diabetics. Development of the scheme identified key questions about quality which have promoted a separate research agenda.

scholarly journals Underground Nuclear Astrophysics in China

2015 ◽  
Vol 11 (A29A) ◽  
pp. 333-336
Author(s):  
Liu WeiPing ◽  
Keyword(s):  
Stellar Evolution ◽  
Nuclear Reactions ◽  
Nuclear Astrophysics ◽  
High Current ◽  
Low Background ◽  
Set Up ◽  
Ecr Source

AbstractUnderground Nuclear Astrophysics in China (JUNA) will take the advantage of the ultra-low background in Jinping underground lab. High current accelerator with an ECR source and detectors will be set up. We plan to study directly a number of nuclear reactions important to hydrostatic stellar evolution at their relevant stellar energies, such as 25Mg(p,γ)26Al, 19F(p,α)16O, 13C(α,n)16O and 12C(α,γ)16O.

scholarly journals NMRdock: Lightweight and Modular NMR Processing

2019 ◽  
Author(s):  
Kyle W. East ◽  
Andrew Leith ◽  
Ashok Ragavendran ◽  
Frank Delaglio ◽  
George P. Lisi
Keyword(s):  
Molecular Structure ◽  
Data Processing ◽  
Open Source ◽  
Future Development ◽  
Additional Analysis ◽  
Current Image ◽  
Structure And Dynamics ◽  
Link Type ◽  
Software Packages ◽  
Nmr Data

ABSTRACTNMR is a widely employed tool in chemistry, biology, and physics for the study of molecular structure and dynamics. Advances in computation have produced scores of software programs necessary for the processing and analysis of NMR data. However, the production of NMR software has been largely overseen by academic labs, each with their own preferred OS, environment, and dependencies. This lack of broader standardization and the complexity of installing and maintaining NMR-related software creates a barrier of entry into the field. To further complicate matters, as computation evolves, many aging software packages become deprecated. To reduce the barrier for newcomers and to prevent deprecation of aging software, we have created the NMRdock container. NMRdock utilizes containerization to package NMR processing and analysis programs into a single, easy-to-install Docker image that can be run on any modern OS. The current image contains two bedrock NMR data processing programs (NMRPipe and NMRFAM Sparky). However, future development of NMRdock aims to add modules for additional analysis programs to build a library of tools in a standardized and easy-to-implement manner. NMRdock is open source and free to download at https://compbiocore.github.io/nmrdock/.

scholarly journals A guide to creating design matrices for gene expression experiments

F1000Research ◽  
2020 ◽  
Vol 9 ◽  
pp. 1444
Author(s):  
Charity W. Law ◽  
Kathleen Zeglinski ◽  
Xueyi Dong ◽  
Monther Alhamdoosh ◽  
Gordon K. Smyth ◽  
...  
Keyword(s):  
Gene Expression ◽  
Data Analysis ◽  
Differential Expression ◽  
Rna Sequencing ◽  
Expression Analysis ◽  
Graphical Representation ◽  
Differential Expression Analysis ◽  
Data Types ◽  
Software Packages ◽  
Set Up

Differential expression analysis of genomic data types, such as RNA-sequencing experiments, use linear models to determine the size and direction of the changes in gene expression. For RNA-sequencing, there are several established software packages for this purpose accompanied with analysis pipelines that are well described. However, there are two crucial steps in the analysis process that can be a stumbling block for many -- the set up an appropriate model via design matrices and the set up of comparisons of interest via contrast matrices. These steps are particularly troublesome because an extensive catalogue for design and contrast matrices does not currently exist. One would usually search for example case studies across different platforms and mix and match the advice from those sources to suit the dataset they have at hand. This article guides the reader through the basics of how to set up design and contrast matrices. We take a practical approach by providing code and graphical representation of each case study, starting with simpler examples (e.g. models with a single explanatory variable) and move onto more complex ones (e.g. interaction models, mixed effects models, higher order time series and cyclical models). Although our work has been written specifically with a limma-style pipeline in mind, most of it is also applicable to other software packages for differential expression analysis, and the ideas covered can be adapted to data analysis of other high-throughput technologies. Where appropriate, we explain the interpretation and differences between models to aid readers in their own model choices. Unnecessary jargon and theory is omitted where possible so that our work is accessible to a wide audience of readers, from beginners to those with experience in genomics data analysis.

scholarly journals Status and Needs of Astrometry

1979 ◽  
Vol 50 ◽  
pp. 19-1-19-9
Author(s):  
James A. Hughes
Keyword(s):  
Stellar Evolution ◽  
Proper Motion ◽  
Reference System ◽  
Binary Star ◽  
Stellar Dynamics ◽  
Inertial Reference Frame ◽  
Star Studies ◽  
The Status ◽  
Near Future ◽  
Fundamental Reference

AbstractA review will be presented of the status of the fundamental reference system. Mention will be made of the problems limiting the accuracy of transit circles and photographic astrometry and attempts at possible improvments in the near future. The progress in the preparation of the FK5 will be briefly mentioned, as will be the various methods used to approximate an inertial reference frame. Needs for higher accuracy in Astronomy fall in the area of better modeling of the Earth's motion (rotation, nutation, precession, the ecliptic, etc.) as well as a parallax and proper motion determination for galactic structure studies, stellar dynamics and stellar evolution. It will be assumed that interferometric binary star studies will be discussed elsewhere.

A Beginners' Guide to Setting up a Relatives' Support Group for Carers of Elderly People with a Mental Illness

1989 ◽  
Vol 52 (3) ◽  
pp. 105-107
Author(s):  
Sue Penna
Keyword(s):  
Mental Illness ◽  
Elderly People ◽  
Support Groups ◽  
Support Group ◽  
Future Development ◽  
The Future ◽  
Need For Support ◽  
Set Up

This article discusses the need for support groups for the carers of elderly people with a mental illness, and offers suggestions on how to set up and run a relatives' support group. It is hoped that it may not only encourage those working in this field to set up similar groups but also provoke discussion on the future development of such groups.

scholarly journals Mind the evidence gap: the use of patient-based evidence to create “complete HTA” in the twenty-first century

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Sophie Staniszewska ◽  
Sophie Söderholm Werkö
Keyword(s):  
Future Development ◽  
Technology Assessment ◽  
Task Force ◽  
Health Technology ◽  
First Century ◽  
Full Potential ◽  
Discussion Forums ◽  
Methodological Development ◽  
Conference Presentations ◽  
Set Up

Abstract The aim of this paper is to review the concept of patient-based evidence in health technology assessment (HTA), drawing on philosophical ideas of knowledge in order to judge whether current approaches to the use of evidence for HTA are complete. We draw on a number of key sources, including key papers and book chapters, discussion forums, agency reports, and conference presentations. We develop the potential dimensions of patient-based evidence, describe its key attributes, and consider its future development. Patient-based evidence has the potential to be a key concept in HTA, comprised of a series of related elements of importance to patients. We recognize that we raise more questions than can be answered, but as an emerging concept, recognition and understanding of patient-based evidence is still developing. The concepts and methods that support its application in HTA require urgent development. We conclude that clinical and economic forms of evidence are not enough for HTA. For HTA to be complete, we need to consider all relevant aspects of the phenomena, including patient-based evidence. There is now an urgent need for the global research and HTA community to work together to realize the full potential of patient-based evidence through conceptual and methodological development and wider recognition. We advocate that a task force be set up to address these urgent issues.

scholarly journals Distance Measurement Systems Using Lasers and Their Applications

2017 ◽  
Vol 9 (4) ◽  
pp. 33
Author(s):  
Joao Antonio Santos Dias Fonseca ◽  
Antonio Baptista ◽  
Ma Joao Martins ◽  
Joao Paulo N. Torres
Keyword(s):  
Future Development ◽  
Technological Progress ◽  
Distance Measurement ◽  
Measurement Methods ◽  
Measuring Systems ◽  
Measurement Systems ◽  
Advantages And Disadvantages ◽  
Set Up ◽  
Complex Methods ◽  
Methods Of Measurement

Optical measuring systems came to offer new ways to determine distances, deformations or vibrations through more accurate and greater range methods. Technological progress has allowed a significant improvement of several components, including the optical ones. Thus, the development of essential measurement methods is crucial to keep up with technological advances.In this paper, the three basic methods of measurement are studied – triangulation, telemetry and interferometry, covering their main applications, advantages and disadvantages, and theoretically substantiating each of the methods. The results of simulation routines for each method are shown along this work. For the triangulation method we made two experiments which demonstrate the functioning of the method in measuring distances and surfaces.For the telemetry method, experimental setups were studied to apply the method of pulse telemetry and phase comparison telemetry to measure distances,Thus, it is intended to set up the basis for the future development of more complex methods.

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