Report on New Methods for Representing and Interacting with Qualitative Geographic Information, Stage 2: Task Group 1 Core Re-engineering and Place-based Use Case

2013 ◽  
Author(s):  
Alan M. MacEachren ◽  
Alexander Savelyev ◽  
Scott Pezanowski ◽  
Anthony C. Robinson ◽  
Prasenjit Mitra
Keyword(s):  
Geographic Information ◽  
Task Group ◽  
Use Case ◽  
New Methods ◽  
Group 1

Report on New Methods for Representing and Interacting with Qualitative Geographic Information, Stage 2: Task Group 3: Social-focused Use Case

2014 ◽  
Author(s):  
Alan M. MacEachren ◽  
Alexander Savelyev ◽  
Scott Pezanowski ◽  
Anthony C. Robinson ◽  
Prasenjit Mitra
Keyword(s):  
Geographic Information ◽  
Task Group ◽  
Use Case ◽  
New Methods ◽  
Group 3

New Methods for Representing and Interacting with Qualitative Geographic Information

2012 ◽  
Author(s):  
Alexander Savelyev ◽  
Scott Pezanowski ◽  
Anthony C. Robinson ◽  
Alan M. MacEachren
Keyword(s):  
Geographic Information ◽  
New Methods

scholarly journals Reaching an Established but Growing Network: Use-case from Canadensys

2019 ◽  
Vol 3 ◽  
Author(s):  
Carole Sinou ◽  
Anne Bruneau ◽  
Deborah L Paul ◽  
Mary Kennedy
Keyword(s):  
Use Case ◽  
Biodiversity Data ◽  
Canadian Universities ◽  
Capacity Enhancement ◽  
Data Usage ◽  
New Methods ◽  
The Usa ◽  
Important Challenge ◽  
Growing Network ◽  
New Framework

Canadensys is an associate GBIF node in Canada, officially established as a node in 2014, but publishing data on GBIF since 2011. Since then, Canadensys has grown from nine institutions to a network of nearly 25 institutions that publish biodiversity data and we have migrated from an in-house explorer, to a Living Atlases (LA) framework. Canadensys publishes data curated or collected by Canadian universities, museums, as well as municipalities and non govermental organizations (NGOs). Establishing a new network can be challenging, but several resources and programs exist to help node managers and node participants initiate the publication process. Keeping an established network alive while continuing to grow and to develop new methods and technologies is also an important challenge, especially in a context where institutions are geographically separated across large distances, and where funds are scarce or mostly oriented towards highly innovative projects. With the aim to reach both established and new participants across Canada and from adjacent regions in the USA, and in order to help them to familiarize themselves with the new framework based on LA, we organized three workshops on data publication and data usage. Partially funded through a GBIF CESP project, this series of workshops was developed in partnership with international, regional and national partners such as iDigBio, OBIS Canada and GBIF Spain. The workshops helped new participants prepare and publish data, and allowed established publishers to enrich and update their resources on Canadensys and GBIF. The project also highlighted some of the challenges our network is facing, such as funding, infrastructure, human resources, and communication. Feedback from participants shows that the workshops were successfull in terms of capacity enhancement, giving knowledge and tools to data manager in order to prepare and publish standardize data, as well as to transfer that knowledge in their respective institutions. All materials and documentation developed during this project will be made available on Canadensys, allowing everyone interested to follow the curriculum. Sharing our experience will be useful for other nodes wanting to introduce the LA framework to their users and to enhance capacities in the network.

Optimisation of Mixed Hardening Material Constitutive Models for Weld Residual Stress Simulation Using the NeT Task Group 1 Single Bead on Plate Benchmark Problem

2009 ◽  
Author(s):  
Michael C. Smith ◽  
Brahim Nadri ◽  
Ann C. Smith ◽  
David G. Carr ◽  
Philip J. Bendeich ◽  
...  
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Constitutive Models ◽  
Task Group ◽  
Simple Problem ◽  
Benchmark Problem ◽  
Mixed Hardening ◽  
Weld Residual Stress ◽  
Stress Simulation ◽  
Group 1

A single weld bead deposited on a flat plate is a deceptively simple problem that is in practice a challenge for both measurement and prediction of weld residual stresses. Task Group 1 of the NeT collaborative network has examined this problem in an extensive programme of measurement and simulation extending from 2002 to 2008. As a result, the NeT bead on plate forms an ideal benchmark problem for the development of weld residual stress simulation techniques. One of the conclusions of NeT Task Group 1 is that the most accurate predictions of weld residual stresses in austenitic steels are achieved using mixed isotropic-kinematic material constitutive models. However, the use of these models can require both extensive materials data, and compromises in fitting either the monotonic or cyclic responses. This paper reports a detailed matrix of sensitivity studies aimed at optimising the behaviour of mixed hardening models in welding simulation, using the Lemaitre-Chaboche formulation in the ABAQUS finite element code. Predicted stresses and strains in the NeT bead on plate specimen are compared with the extensive database of residual stress measurements. Further studies examine sensitivity to the handling of high temperature inelastic strains, using a novel two-stage annealing functionality implemented within ABAQUS. The results show that, overall, the most accurate predictions are made if the Lemaitre-Chaboche parameters are optimised to fit the monotonic response over the first 2% of plastic strain. However, further improvements in prediction could be achieved if the constitutive model were capable of independently fitting both the monotonic and saturated cyclic response of the material.

Evaluation of the New Classification and Surgical Strategy for Myasthenia Gravis

2012 ◽  
Vol 78 (12) ◽  
pp. 1329-1335 ◽  
Author(s):  
Xin-Zheng Cui ◽  
Xin-Ying Ji ◽  
Feng Gao ◽  
Kun-Peng Yang ◽  
Hui-Ling Bai ◽  
...  
Keyword(s):  
Myasthenia Gravis ◽  
New Classification ◽  
New Methods ◽  
Group 3 ◽  
Group 2 ◽  
Level Group ◽  
Median Incision ◽  
Selection Of ◽  
Made In ◽  
Group 1

The aim of this study was to discuss the new methods of clinical classification and staging of patients with myasthenia gravis (MG) proposed by our group and to summarize the experiences of surgical treatment of MG with a novel incision by cutting the sternum cross-sectionally at the second intercostal level. A retrospective analysis was made for the clinical data from the patients with MG who underwent thymectomy from July 1988 to May 2009. The surgical procedures were designed into three groups, a group with Osserman classification and median incision of the sternum (Group 1), a group with MGFA typing (Myasthenia Gravis Foundation of America) and a small transverse sternal incision at the second intercostal level (Group 2), and a group with new typing and a smaller transverse sternal incision at the second intercostal level (Group 3). Observation of the clinical typing and staging was made in the patients with myasthenia crisis. The parameters such as procedure duration in Group 2 and 3 was significantly lower than those in Group 1 ( P < 0.05). The incidence of myasthenia crisis in Group 3 was significantly lower than that in Groups 2 and 3 ( P < 0.05). The procedure with a smaller transverse sternal incision at the second intercostal level (Group 3) is a safer method for patients with MG. The combination of this procedure with the new typing and staging methods proposed by our group could facilitate the selection of operation indications and opportunity, resulting in the lower incidence of myasthenia crisis and mortality. Our new procedure is well deserved to be a preferential selection by other hospitals.

Exploring sensor data for agricultural statistics: The fruit is not hanging as low as we thought

2021 ◽  
pp. 1-14
Author(s):  
Ger Snijkers ◽  
Tim Punt ◽  
Sofie De Broe ◽  
José Gómez Pérez
Keyword(s):  
Business Processes ◽  
Current Data ◽  
Data Driven ◽  
Sensor Data ◽  
Small Scale ◽  
Use Case ◽  
New Methods ◽  
New Business ◽  
Data Source ◽  
Selection Of

New business processes are increasingly data driven as sensors have become ubiquitous. Sensor data could be a valuable new data source for official statistics. To study this presumption Statistics Netherlands conducted a small-scale use case in the area of agricultural statistics in collaboration with an innovative farmer. A selection of his sensor data was explored for overlap with current data demands in surveys. The aim of the study was to obtain insights in the available agricultural data, their data structure and quality, and explore new methods of data collection for agricultural statistics. The conclusion is that these data are valuable for replacing or pre-filling (parts of) certain agricultural surveys. However, many more challenges surfaced than we expected, to which the title of this paper refers. These challenges will be discussed in this paper.

Sensitivity of Predicted Weld Residual Stresses in the NeT Task Group 1 Single Bead on Plate Benchmark Problem to Finite Element Mesh Design and Heat Source Characteristics

2009 ◽  
Author(s):  
Philip J. Bendeich ◽  
Mike C. Smith ◽  
David G. Carr ◽  
Lyndon Edwards
Keyword(s):  
Finite Element ◽  
Heat Source ◽  
Residual Stresses ◽  
Task Group ◽  
Simple Problem ◽  
Controlled Study ◽  
Design Element ◽  
Benchmark Problem ◽  
Source Characteristics ◽  
Group 1

A single weld bead deposited on a flat plate is a deceptively simple problem that is, in practice, a significant challenge for both measurement and prediction of weld residual stresses. Task Group 1 of the NeT collaborative network has examined this problem in an extensive programme of measurement and simulation extending from 2002 to 2008. Thus, the NeT bead on plate forms an ideal benchmark problem for the development of weld residual stress simulation techniques. It is often difficult to separate the influence of different analysis variables in a large collaborative study such as NeT Task Group 1. This paper examines sensitivity to mesh design, element type, and heat source characteristics in a closely controlled study using several different mesh designs, element types (both tetrahedral and hexahedral), and heat sources, but the same material constitutive model and finite element analysis code. It complements a companion paper that varies material constitutive models. A dedicated heat source modelling tool with a semi-automatic interface to the ABAQUS finite element code has been used to vary the heat source characteristics, thus facilitating rapid and controlled sensitivity studies without the need for bespoke heat source coding within ABAQUS.

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