Practical Realization of a Reference System for Earth Dynamics by Satellite Methods

1975 ◽  
Vol 26 ◽  
pp. 341-380 ◽  
Author(s):  
R. J. Anderle ◽  
M. C. Tanenbaum
Keyword(s):  
Reference Frame ◽  
Polar Motion ◽  
Pole Position ◽  
Control Points ◽  
Significant Information ◽  
Crustal Motion ◽  
Average Reference ◽  
Future Data ◽  
Existing Data

AbstractObservations of artificial earth satellites provide a means of establishing an.origin, orientation, scale and control points for a coordinate system. Neither existing data nor future data are likely to provide significant information on the .001 angle between the axis of angular momentum and axis of rotation. Existing data have provided data to about .01 accuracy on the pole position and to possibly a meter on the origin of the system and for control points. The longitude origin is essentially arbitrary. While these accuracies permit acquisition of useful data on tides and polar motion through dynamio analyses, they are inadequate for determination of crustal motion or significant improvement in polar motion. The limitations arise from gravity, drag and radiation forces on the satellites as well as from instrument errors. Improvements in laser equipment and the launch of the dense LAGEOS satellite in an orbit high enough to suppress significant gravity and drag errors will permit determination of crustal motion and more accurate, higher frequency, polar motion. However, the reference frame for the results is likely to be an average reference frame defined by the observing stations, resulting in significant corrections to be determined for effects of changes in station configuration and data losses.

Gender Differences in Entrepreneurial Attitude & Intentions among university Students

2019 ◽  
Vol 2 (1) ◽  
pp. 193-200
Author(s):  
Ilham Hassan Fathelrahman Mansour
Keyword(s):  
Gender Differences ◽  
University Students ◽  
Sampling Technique ◽  
Target Population ◽  
Entrepreneurial Intentions ◽  
New Venture ◽  
Venture Creation ◽  
New Business ◽  
Future Data ◽  
The University

This empirical study aims at assessing the attitudes, perception and intention of university students towards entrepreneurship and new venture creation with a focus on gender differences in entrepreneurial perceptions and intentions to start new business in the future. Data were collected using a questionnaire-based survey of 350 students at the University of Khartoum in Sudan. The target population was the students in the final year in the University of Khartoum. The stratified sampling technique was used to select the sample size because the population consisted of a number of subgroups that differed in their characteristics. The results showed significant differences between genders in entrepreneurial intentions and its antecedents. Thus, it is important that customized approaches based on gender are needed for developing entrepreneurial intentions among college students.

scholarly journals Behavioral medicine challenges in the shadow of a global pandemic

2020 ◽  
Author(s):  
Alyssa T Brooks ◽  
Hannah K Allen ◽  
Louise Thornton ◽  
Tracy Trevorrow
Keyword(s):  
Environmental Factors ◽  
Health Behavior ◽  
Health Behaviors ◽  
Natural Experiment ◽  
Direct Effects ◽  
Global Pandemic ◽  
Wide Range ◽  
Future Data ◽  
Short And Long Term

Abstract Health behavior researchers should refocus and retool as it becomes increasingly clear that the challenges of the COVID-19 pandemic surpass the direct effects of COVID-19 and include unique, drastic, and ubiquitous consequences for health behavior. The circumstances of the pandemic have created a natural experiment, allowing researchers focusing on a wide range of health behaviors and populations with the opportunity to use previously collected and future data to study: (a) changes in health behavior prepandemic and postpandemic, (b) health behavior prevalence and needs amidst the pandemic, and (c) the effects of the pandemic on short- and long-term health behavior. Our field is particularly challenged as we attempt to consider biopsychosocial, political, and environmental factors that affect health and health behavior. These realities, while daunting, should call us to action to refocus and retool our research, prevention, and intervention efforts

Functional Applications of Future Data Storage Devices

2021 ◽  
pp. 2001181
Author(s):  
Jia‐Qin Yang ◽  
Ye Zhou ◽  
Su‐Ting Han
Keyword(s):  
Data Storage ◽  
Storage Devices ◽  
Functional Applications ◽  
Future Data

Architecture of future data base systems

1981 ◽  
Vol 11 (1) ◽  
pp. 30-44 ◽  
Author(s):  
Lawrence A. Rowe ◽  
Michael Stonebraker
Keyword(s):  
Data Base ◽  
Future Data

scholarly journals Delineating the Polarized and Unpolarized Parton Structure of the Nucleon

2015 ◽  
Vol 37 ◽  
pp. 1560053
Author(s):  
Pedro Jimenez-Delgado
Keyword(s):  
Parton Distribution ◽  
Distribution Functions ◽  
Distribution Analysis ◽  
Coupling Constant ◽  
Parton Distribution Functions ◽  
Careful Treatment ◽  
Future Data ◽  
The Impact

Reports on our latest extractions of parton distribution functions of the nucleon are given. First an overview of the recent JR14 upgrade of our unpolarized PDFs, including NNLO determinations of the strong coupling constant and a discussion of the role of the input scale in parton distribution analysis. In the second part of the talk recent results on the determination of spin-dependent PDFs from the JAM collaboration are reported, including a careful treatment of hadronic and nuclear corrections, as well as reports on the impact of present and future data in our understanding of the spin of the nucleon.

Structured Reporting in Musculoskeletal Radiology

2021 ◽  
Vol 25 (05) ◽  
pp. 641-645
Author(s):  
Ajay Kohli ◽  
Samantha Castillo ◽  
Uma Thakur ◽  
Avneesh Chhabra
Keyword(s):  
Manufacturing Industry ◽  
Service Industry ◽  
Quality Standards ◽  
Structured Reporting ◽  
Learning Approaches ◽  
Musculoskeletal Radiology ◽  
Future Directions ◽  
Future Data ◽  
Service Departments ◽  
And Training

AbstractMusculoskeletal (MSK) radiologists are predominantly consultants in the service departments of health care. Unlike the manufacturing industry, quality controls are difficult to institute in a service industry and more variability is expected. Structured reporting is a unique way to institute quality standards, and by using the checklist approach with uniform terminology, it can lead to more homogeneity and consistency of reporting, concise lexicon use within and across practices, minimization of errors, enhancement of divisional and departmental branding, improvement of interdisciplinary communications, and future data mining. We share our experience from more than a decade of structured reporting in the domain of MSK radiology, our practice standards, and how reporting has evolved in our MSK practice. Further discussions include future directions aided by machine learning approaches with augmented reality and the possibility of virtual fellowship and training using consistent lexicons and structured reporting.

Software-defined data protection

2021 ◽  
Vol 14 (7) ◽  
pp. 1167-1174
Author(s):  
Zsolt István ◽  
Soujanya Ponnapalli ◽  
Vijay Chidambaram
Keyword(s):  
Data Processing ◽  
Data Protection ◽  
Distributed Storage ◽  
Hardware Design ◽  
Large Data ◽  
Hardware Interface ◽  
Future Data ◽  
Specialized Hardware

Most modern data processing pipelines run on top of a distributed storage layer, and securing the whole system, and the storage layer in particular, against accidental or malicious misuse is crucial to ensuring compliance to rules and regulations. Enforcing data protection and privacy rules, however, stands at odds with the requirement to achieve higher and higher access bandwidths and processing rates in large data processing pipelines. In this work we describe our proposal for the path forward that reconciles the two goals. We call our approach "Software-Defined Data Protection" (SDP). Its premise is simple, yet powerful: decoupling often changing policies from request-level enforcement allows distributed smart storage nodes to implement the latter at line-rate. Existing and future data protection frameworks can be translated to the same hardware interface which allows storage nodes to offload enforcement efficiently both for company-specific rules and regulations, such as GDPR or CCPA. While SDP is a promising approach, there are several remaining challenges to making this vision reality. As we explain in the paper, overcoming these will require collaboration across several domains, including security, databases and specialized hardware design.

Sign in / Sign up

Export Citation Format

Share Document