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Presentation for UC Riverside researchers, librarians, and others on 15 April 2013.
Citation preview
Data Stewardship for Researchers
Carly Strasser, PhD California Digital Library
@carlystrasser [email protected]
UC Riverside April 2013
From
Calisph
ere, Cou
retsy of U
C Riverside, Califo
rnia M
useu
m of P
hotograp
hy
Tips, Tools, & Guidance
From
Calisph
ere, Cou
rtesy of Tho
usan
d Oak
s Library
Roadmap
4. Toolbox
1. Background
2. Best practices 3. Planning
C. Strasser
C. Strasser
C. Strasser
C. Strasser
Courtesy of WHOI
C. Strasser
C. Strasser
C. Strasser
North Atla
ntic righ
t wha
le m
othe
r and
calf,
by Gill Braulik und
er Permit No. 655
-‐165
2
Is data management being taught? Do attitudes about
sharing differ among disciplines?
What role can libraries play in data education?
How can we promote storing data in repositories?
What barriers to sharing can we eliminate?
Why don’t people share data?
Why is data management a hot topic?
From
Calisph
ere via Sa
nta Clara University
, ark:/130
30/kt696
nc7j2
The lab/field notebook
Da Vinci
Curie
Newton
classicalschool.blogspot.com
Darwin
Digital data From
Flickr by Flickm
or
From
Flickr by US Arm
y En
vironm
ental C
omman
d
From
Flickr by DW08
25
C. Strasser
Courtesey of W
HOI
www.woodrow.org
From
Flickr by deltaMike
Digital data +
Complex workflows
C:\Documents and Settings\hampton\My Documents\NCEAS Distributed Graduate Seminars\[Wash Cres Lake Dec 15 Dont_Use.xls]Sheet1Stable Isotope Data Sheet
Wash Cresc Lake Peter's lab Don't use - old dataAlgal Washed RocksDec. 16Tray 004
SD for delta 13C = 0.07 SD for delta 15N = 0.15
Position SampleID Weight (mg) %C delta 13C delta 13C_ca %N delta 15N delta 15N_ca Spec. No.A1 ref 0.98 38.27 -25.05 -24.59 1.96 4.12 3.47 25354A2 ref 0.98 39.78 -25.00 -24.54 2.03 4.01 3.36 25356A3 ref 0.98 40.37 -24.99 -24.53 2.04 4.09 3.44 25358A4 ref 1.01 42.23 -25.06 -24.60 2.17 4.20 3.55 25360 Shore Avg ConA5 ALG01 3.05 1.88 -24.34 -23.88 0.17 -1.65 -2.30 25362 c -1.26 -27.22A6 Lk Outlet Alg 3.06 31.55 -30.17 -29.71 0.92 0.87 0.22 25364 1.26 0.32A7 ALG03 2.91 6.85 -21.11 -20.65 0.48 -0.97 -1.62 25366 cA8 ALG05 2.91 35.56 -28.05 -27.59 2.30 0.59 -0.06 25368A9 ALG07 3.04 33.49 -29.56 -29.10 1.68 0.79 0.14 25370A10 ALG06 2.95 41.17 -27.32 -26.86 1.97 2.71 2.06 25372B1 ALG04 3.01 43.74 -27.50 -27.04 1.36 0.99 0.34 25374 cB2 ALG02 3 4.51 -22.68 -22.22 0.34 4.31 3.66 25376B3 ALG01 2.99 1.59 -24.58 -24.12 0.15 -1.69 -2.34 25378 cB4 ALG03 2.92 4.37 -21.06 -20.60 0.34 -1.52 -2.17 25380 cB5 ALG07 2.9 33.58 -29.44 -28.98 1.74 0.62 -0.03 25382B6 ref 1.01 44.94 -25.00 -24.54 2.59 3.96 3.31 25384B7 ref 0.99 42.28 -24.87 -24.41 2.37 4.33 3.68 25386B8 Lk Outlet Alg 3.04 31.43 -29.69 -29.23 1.07 0.95 0.30 25388B9 ALG06 3.09 35.57 -27.26 -26.80 1.96 2.79 2.14 25390B10 ALG02 3.05 5.52 -22.31 -21.85 0.45 4.72 4.07 25392C1 ALG04 2.98 37.90 -27.42 -26.96 1.36 1.21 0.56 25394 cC2 ALG05 3.04 31.74 -27.93 -27.47 2.40 0.73 0.08 25396C3 ref 0.99 38.46 -25.09 -24.63 2.40 4.37 3.72 25398
23.78 1.17
Reference statistics:
Sampling Site / Identifier:Sample Type:
Date:Tray ID and Sequence:
From Stephanie Hampton (2010) ESA Workshop on Best Practices
2 tables Random notes
From Stephanie Hampton
C:\Documents and Settings\hampton\My Documents\NCEAS Distributed Graduate Seminars\[Wash Cres Lake Dec 15 Dont_Use.xls]Sheet1Stable Isotope Data Sheet
Wash Cresc Lake Peter's lab Don't use - old dataAlgal Washed RocksDec. 16Tray 004
SD for delta 13C = 0.07 SD for delta 15N = 0.15
Position SampleID Weight (mg) %C delta 13C delta 13C_ca %N delta 15N delta 15N_ca Spec. No.A1 ref 0.98 38.27 -25.05 -24.59 1.96 4.12 3.47 25354A2 ref 0.98 39.78 -25.00 -24.54 2.03 4.01 3.36 25356A3 ref 0.98 40.37 -24.99 -24.53 2.04 4.09 3.44 25358A4 ref 1.01 42.23 -25.06 -24.60 2.17 4.20 3.55 25360 Shore Avg ConA5 ALG01 3.05 1.88 -24.34 -23.88 0.17 -1.65 -2.30 25362 c -1.26 -27.22A6 Lk Outlet Alg 3.06 31.55 -30.17 -29.71 0.92 0.87 0.22 25364 1.26 0.32A7 ALG03 2.91 6.85 -21.11 -20.65 0.48 -0.97 -1.62 25366 cA8 ALG05 2.91 35.56 -28.05 -27.59 2.30 0.59 -0.06 25368A9 ALG07 3.04 33.49 -29.56 -29.10 1.68 0.79 0.14 25370A10 ALG06 2.95 41.17 -27.32 -26.86 1.97 2.71 2.06 25372B1 ALG04 3.01 43.74 -27.50 -27.04 1.36 0.99 0.34 25374 cB2 ALG02 3 4.51 -22.68 -22.22 0.34 4.31 3.66 25376B3 ALG01 2.99 1.59 -24.58 -24.12 0.15 -1.69 -2.34 25378 cB4 ALG03 2.92 4.37 -21.06 -20.60 0.34 -1.52 -2.17 25380 cB5 ALG07 2.9 33.58 -29.44 -28.98 1.74 0.62 -0.03 25382B6 ref 1.01 44.94 -25.00 -24.54 2.59 3.96 3.31 25384B7 ref 0.99 42.28 -24.87 -24.41 2.37 4.33 3.68 25386B8 Lk Outlet Alg 3.04 31.43 -29.69 -29.23 1.07 0.95 0.30 25388B9 ALG06 3.09 35.57 -27.26 -26.80 1.96 2.79 2.14 25390B10 ALG02 3.05 5.52 -22.31 -21.85 0.45 4.72 4.07 25392C1 ALG04 2.98 37.90 -27.42 -26.96 1.36 1.21 0.56 25394 cC2 ALG05 3.04 31.74 -27.93 -27.47 2.40 0.73 0.08 25396C3 ref 0.99 38.46 -25.09 -24.63 2.40 4.37 3.72 25398
23.78 1.17
Reference statistics:
Sampling Site / Identifier:Sample Type:
Date:Tray ID and Sequence:
From Stephanie Hampton (2010) ESA Workshop on Best Practices
Wash Cres Lake Dec 15 Dont_Use.xls
From Stephanie Hampton
C:\Documents and Settings\hampton\My Documents\NCEAS Distributed Graduate Seminars\[Wash Cres Lake Dec 15 Dont_Use.xls]Sheet1Stable Isotope Data Sheet
Wash Cresc Lake Peter's lab Don't use - old dataAlgal Washed RocksDec. 16Tray 004
SD for delta 13C = 0.07 SD for delta 15N = 0.15
Position SampleID Weight (mg) %C delta 13C delta 13C_ca %N delta 15N delta 15N_ca Spec. No.A1 ref 0.98 38.27 -25.05 -24.59 1.96 4.12 3.47 25354A2 ref 0.98 39.78 -25.00 -24.54 2.03 4.01 3.36 25356A3 ref 0.98 40.37 -24.99 -24.53 2.04 4.09 3.44 25358A4 ref 1.01 42.23 -25.06 -24.60 2.17 4.20 3.55 25360 Shore Avg ConA5 ALG01 3.05 1.88 -24.34 -23.88 0.17 -1.65 -2.30 25362 c -1.26 -27.22A6 Lk Outlet Alg 3.06 31.55 -30.17 -29.71 0.92 0.87 0.22 25364 1.26 0.32A7 ALG03 2.91 6.85 -21.11 -20.65 0.48 -0.97 -1.62 25366 cA8 ALG05 2.91 35.56 -28.05 -27.59 2.30 0.59 -0.06 25368A9 ALG07 3.04 33.49 -29.56 -29.10 1.68 0.79 0.14 25370A10 ALG06 2.95 41.17 -27.32 -26.86 1.97 2.71 2.06 25372B1 ALG04 3.01 43.74 -27.50 -27.04 1.36 0.99 0.34 25374 c SUMMARY OUTPUTB2 ALG02 3 4.51 -22.68 -22.22 0.34 4.31 3.66 25376B3 ALG01 2.99 1.59 -24.58 -24.12 0.15 -1.69 -2.34 25378 c Regression StatisticsB4 ALG03 2.92 4.37 -21.06 -20.60 0.34 -1.52 -2.17 25380 c Multiple R 0.283158B5 ALG07 2.9 33.58 -29.44 -28.98 1.74 0.62 -0.03 25382 R Square 0.080178B6 ref 1.01 44.94 -25.00 -24.54 2.59 3.96 3.31 25384 Adjusted R Square-0.022024B7 ref 0.99 42.28 -24.87 -24.41 2.37 4.33 3.68 25386 Standard Error1.906378B8 Lk Outlet Alg 3.04 31.43 -29.69 -29.23 1.07 0.95 0.30 25388 Observations 11B9 ALG06 3.09 35.57 -27.26 -26.80 1.96 2.79 2.14 25390B10 ALG02 3.05 5.52 -22.31 -21.85 0.45 4.72 4.07 25392 ANOVAC1 ALG04 2.98 37.90 -27.42 -26.96 1.36 1.21 0.56 25394 c df SS MS F Significance FC2 ALG05 3.04 31.74 -27.93 -27.47 2.40 0.73 0.08 25396 Regression 1 2.851116 2.851116 0.784507 0.398813C3 ref 0.99 38.46 -25.09 -24.63 2.40 4.37 3.72 25398 Residual 9 32.7085 3.634278
23.78 1.17 Total 10 35.55962
CoefficientsStandard Error t Stat P-value Lower 95%Upper 95%Lower 95.0%Upper 95.0%Intercept -4.297428 4.671099 -0.920003 0.381568 -14.8642 6.269341 -14.8642 6.269341X Variable 1-0.158022 0.17841 -0.885724 0.398813 -0.561612 0.245569 -0.561612 0.245569
Reference statistics:
Sampling Site / Identifier:Sample Type:
Date:Tray ID and Sequence:
Random stats output
From Stephanie Hampton
C:\Documents and Settings\hampton\My Documents\NCEAS Distributed Graduate Seminars\[Wash Cres Lake Dec 15 Dont_Use.xls]Sheet1Stable Isotope Data Sheet
Wash Cresc Lake Peter's lab Don't use - old dataAlgal Washed RocksDec. 16Tray 004
SD for delta 13C = 0.07 SD for delta 15N = 0.15
Position SampleID Weight (mg) %C delta 13C delta 13C_ca %N delta 15N delta 15N_ca Spec. No.A1 ref 0.98 38.27 -25.05 -24.59 1.96 4.12 3.47 25354A2 ref 0.98 39.78 -25.00 -24.54 2.03 4.01 3.36 25356A3 ref 0.98 40.37 -24.99 -24.53 2.04 4.09 3.44 25358A4 ref 1.01 42.23 -25.06 -24.60 2.17 4.20 3.55 25360 Shore Avg ConA5 ALG01 3.05 1.88 -24.34 -23.88 0.17 -1.65 -2.30 25362 c -1.26 -27.22A6 Lk Outlet Alg 3.06 31.55 -30.17 -29.71 0.92 0.87 0.22 25364 1.26 0.32A7 ALG03 2.91 6.85 -21.11 -20.65 0.48 -0.97 -1.62 25366 cA8 ALG05 2.91 35.56 -28.05 -27.59 2.30 0.59 -0.06 25368A9 ALG07 3.04 33.49 -29.56 -29.10 1.68 0.79 0.14 25370A10 ALG06 2.95 41.17 -27.32 -26.86 1.97 2.71 2.06 25372B1 ALG04 3.01 43.74 -27.50 -27.04 1.36 0.99 0.34 25374 c SUMMARY OUTPUTB2 ALG02 3 4.51 -22.68 -22.22 0.34 4.31 3.66 25376B3 ALG01 2.99 1.59 -24.58 -24.12 0.15 -1.69 -2.34 25378 c Regression StatisticsB4 ALG03 2.92 4.37 -21.06 -20.60 0.34 -1.52 -2.17 25380 c Multiple R 0.283158B5 ALG07 2.9 33.58 -29.44 -28.98 1.74 0.62 -0.03 25382 R Square 0.080178B6 ref 1.01 44.94 -25.00 -24.54 2.59 3.96 3.31 25384 Adjusted R Square-0.022024B7 ref 0.99 42.28 -24.87 -24.41 2.37 4.33 3.68 25386 Standard Error1.906378B8 Lk Outlet Alg 3.04 31.43 -29.69 -29.23 1.07 0.95 0.30 25388 Observations 11B9 ALG06 3.09 35.57 -27.26 -26.80 1.96 2.79 2.14 25390B10 ALG02 3.05 5.52 -22.31 -21.85 0.45 4.72 4.07 25392 ANOVAC1 ALG04 2.98 37.90 -27.42 -26.96 1.36 1.21 0.56 25394 c df SS MS F Significance FC2 ALG05 3.04 31.74 -27.93 -27.47 2.40 0.73 0.08 25396 Regression 1 2.851116 2.851116 0.784507 0.398813C3 ref 0.99 38.46 -25.09 -24.63 2.40 4.37 3.72 25398 Residual 9 32.7085 3.634278
23.78 1.17 Total 10 35.55962
CoefficientsStandard Error t Stat P-value Lower 95%Upper 95%Lower 95.0%Upper 95.0%Intercept -4.297428 4.671099 -0.920003 0.381568 -14.8642 6.269341 -14.8642 6.269341X Variable 1-0.158022 0.17841 -0.885724 0.398813 -0.561612 0.245569 -0.561612 0.245569
Reference statistics:
Sampling Site / Identifier:Sample Type:
Date:Tray ID and Sequence:
SampleID ALG03 ALG05 ALG07 ALG06 ALG04 ALG02 ALG01 ALG03 ALG07
Weight (mg) 2.91 2.91 3.04 2.95 3.01 3 2.99 2.92 2.9
%C 6.85 35.56 33.49 41.17 43.74 4.51 1.59 4.37 33.58delta 13C -21.11 -28.05 -29.56 -27.32 -27.50 -22.68 -24.58 -21.06 -29.44
delta 13C_ca -20.65 -27.59 -29.10 -26.86 -27.04 -22.22 -24.12 -20.60 -28.98
%N 0.48 2.30 1.68 1.97 1.36 0.34 0.15 0.34 1.74delta 15N -0.97 0.59 0.79 2.71 0.99 4.31 -1.69 -1.52 0.62
delta 15N_ca -1.62 -0.06 0.14 2.06 0.34 3.66 -2.34 -2.17 -0.03
-3.00
-2.00
-1.00
0.00
1.00
2.00
3.00
4.00
-35.00 -30.00 -25.00 -20.00 -15.00 -10.00 -5.00 0.00
Series1
From Stephanie Hampton
UGLY TRUTH
Data management?
Metadata?
Data repositories?
Share data publicly?
Why share data?
From
Flickr by s i b e r
about researchers…
Hurdles to Data Stewardship
From
Flickr by iowa_
spirit_walker
• Cost • Confusion about
standards • Disparate datasets • Lack of training • Fear of lost rights
or benefits • No incentives
Who cares?
From Flickr by Redden-‐McAllister
From Flickr by AJC1
The Fallout
Data Reuse
Data Management
Data Sharing
From
Flickr by P1
r
Best Practices
1. Planning 2. Data collection & organization 3. Quality control & assurance 4. Metadata 5. Workflows 6. Data stewardship & reuse
Best Practices for Data Management
Create unique identifiers • Decide on naming scheme early • Create a key • Different for each sample
2. Data collection & organization
From Flickr by sjbresnahan From Flickr by zebbie
Standardize • Consistent within columns – only numbers, dates, or text
• Consistent names, codes, formats
Modified from K. Vanderbilt From Pink Floyd, The Wall themurkyfringe.com
2. Data collection & organization
Google Docs Forms
Standardize • Reduce possibility of manual error by constraining entry choices
Modified from K. Vanderbilt
2. Data collection & organization
Excel lists Data
validataion
2. Data collection & organization
Create parameter table Create a site table
From doi:10.3334/ORNLDAAC/777
From doi:10.3334/ORNLDAAC/777
From R Cook, ESA Best Practices Workshop 2010
Use descriptive file names • Unique • Reflect contents
From R Cook, ESA Best Practices Workshop 2010
Bad: Mydata.xls 2001_data.csv best version.txt
Better: Eaffinis_nanaimo_2010_counts.xls
Site name
Year What was measured
Study organism
2. Data collection & organization
*Not for everyone
*
Organize files logically
Biodiversity
Lake
Experiments
Field work
Grassland
Biodiv_H20_heatExp_2005to2008.csv Biodiv_H20_predatorExp_2001to2003.csv … Biodiv_H20_PlanktonCount_2001toActive.csv Biodiv_H20_ChlAprofiles_2003.csv …
From S. Hampton
2. Data collection & organization
Preserve information • Keep raw data raw
• Use scripts to process data & save them with data
Raw data as .csv
R script for processing & analysis
2. Data collection & organization
1. Planning 2. Data collection & organization 3. Quality control & assurance 4. Metadata 5. Workflows 6. Data stewardship & reuse
Best Practices for Data Management
Before data collection • Define & enforce standards • Assign responsibility for data quality
3. Quality control and quality assurance
From
Flickr by StacieBe
e
During data collection/entry • Minimize manual entry • Use double entry • Use a database • Document changes
3. Quality control and quality assurance
From
Flickr by scho
ck
After data entry • Check for missing, impossible,
anomalous values • Perform statistical summaries • Look for outliers
• Normal probability plots • Regression • Scatter plots • Maps
3. Quality control and quality assurance
0
10
20
30
40
50
60
0 10 20 30 40
1. Planning 2. Data collection & organization 3. Quality control & assurance 4. Metadata 5. Workflows 6. Data stewardship & reuse
Best Practices for Data Management
4. Metadata basics Why are you promoting Excel?
What is metadata?
• Digital context
• Name of the data set
• The name(s) of the data file(s) in the data set
• Date the data set was last modified
• Example data file records for each data type file
• Pertinent companion files
• List of related or ancillary data sets
• Software (including version number) used to prepare/read the data set
• Data processing that was performed
• Personnel & stakeholders
• Who collected
• Who to contact with questions
• Funders
• Scientific context
• Scientific reason why the data were collected
• What data were collected
• What instruments (including model & serial number) were used
• Environmental conditions during collection
• Where collected & spatial resolution When collected & temporal resolution
• Standards or calibrations used
• Information about parameters
• How each was measured or produced
• Units of measure
• Format used in the data set
• Precision & accuracy if known
• Information about data
• Definitions of codes used
• Quality assurance & control measures
• Known problems that limit data use (e.g. uncertainty, sampling problems)
• How to cite the data set
4. Metadata basics
• Provides structure to describe data
Common terms | definitions | language | structure
4. Metadata basics
• Lots of different standards EML , FGDC, ISO19115, DarwinCore,…
• Tools for creating metadata files
Morpho (EML), Metavist (FGDC), NOAA MERMaid (CSGDM)
What is metadata?
Select the appropriate metadata standard
1. Planning 2. Data collection & organization 3. Quality control & assurance 4. Metadata 5. Workflows 6. Data stewardship & reuse
Best Practices for Data Management
Temperature data
Salinity data
Data import into R
Analysis: mean, SD
Graph production
Quality control & data cleaning “Clean” T
& S data
Summary statistics
Data in R format
5. Workflows
Workflow: how you get from the raw data to the final products of your research
Simple workflows: flow charts
• R, SAS, MATLAB • Well-‐documented code is…
Easier to review Easier to share Easier to repeat analysis
5. Workflows
Workflow: how you get from the raw data to the final products of your research
Simple workflows: commented scripts
# % $
&
Fancy Schmancy workflows: Kepler Resulting output
5. Workflows
https://kepler-‐project.org
Workflows enable
Reproducibility can someone independently validate findings?
Transparency
others can understand how you arrived at your results
Executability
others can re-‐run or re-‐use your analysis
5. Workflows
From Flickr by merlinprincesse
1. Planning 2. Data collection & organization 3. Quality control & assurance 4. Metadata 5. Workflows 6. Data stewardship & reuse
Best Practices for Data Management
Use stable formats csv, txt, tiff
Create back-‐up copies original, near, far
Periodically test ability to restore information
6. Data stewardship & reuse
Modified from R. Cook
Store your data in a repository
Institutional archive
Discipline/specialty archive
6. Data stewardship & reuse
From Flickr by torkildr
Allows readers to find data products
Get credit for data and publications
Promotes reproducibility
Better measure of research impact
Modified from R. Cook
6. Data stewardship & reuse
Practice Data Citation
Example: Sidlauskas, B. 2007. Data from: Testing for unequal rates of morphological diversification in the absence of a detailed phylogeny: a case study from characiform fishes. Dryad Digital Repository. doi:10.5061/dryad.20
Learn more at www.datacite.org
From
Flickr by Globa
l X
Planning
A document that describes what you will do with your data during your research and after you complete the project
What is a data management plan?
From Flickr by Gavinzac
• Saves time • Increases efficiency • Easier to use data • Others can
understand & use data
• Credit for data products
• Funders require it
Why bother?
DMP supplement may include: 1. the types of data, samples, physical collections, software, curriculum
materials, and other materials to be produced in the course of the project
2. the standards to be used for data and metadata format and content (where existing standards are absent or deemed inadequate, this should be documented along with any proposed solutions or remedies)
3. policies for access and sharing including provisions for appropriate protection of privacy, confidentiality, security, intellectual property, or other rights or requirements
4. policies and provisions for re-‐use, re-‐distribution, and the production of derivatives
5. plans for archiving data, samples, and other research products, and for preservation of access to them
NSF DMP Requirements
From Grant Proposal Guidelines:
• Types of data • Existing data • How/when/where created?
• How processed?
• Quality control
• Security • Who is responsible
1. Types of data & other information
biology.kenyon.edu
C. Strasser
From Flickr by Lazurite
Wired.com
• Metadata needed • How captured • Standards
2. Data & metadata standards
• Obligation to share
• How/when/where available
• Getting access • Copyright / IP • Permission restrictions • Embargo periods • Ethics/privacy • How cited
3. Policies for access & sharing 4. Policies for re-‐use & re-‐distribution
• What & where
• Metadata
• Who’s responsible
5. Plans for archiving & preservation
From Flickr by theManWhoSurfedTooMuch
Don’t forget the budget
dorrvs.com
NSF’s Vision*
DMPs and their evaluation will grow & change over time
Peer review will determine next steps
Community-‐driven guidelines
Evaluation will vary with directorate, division, & program officer
*Unofficially
From
Flickr by dipster1
Toolbox
E-‐notebooks & online science
• NoteBook • ORNL eNote • Evernote • Google Docs • Blogs • wikis • TheLabNotebook.com • NoteBookMaker
TheLabNotebook.com!
Step-by-step wizard for generating DMP
Create | edit | re-use | share | save | generate
Open to community
dmptool.org
List of repositories: databib.org
Where should I put my data?
NSF funded DataNet Project Office of Cyberinfrastructure
www.dataone.org
B
C A
• Data Education Tutorials • Database of best practices &
software tools • Primer on data management • Investigator Toolkit
www.dataone.org
Intercept researchers where they already
work
dataup.cdlib.org
Open Source Tool Add-‐in & Web
Application
csv & xlsx
dataup.cdlib.org
Free
Features Best practices check Generate metadata Generate citation
Post data to repository
dataup.cdlib.org
Data Repository for
Anyone | Anywhere
B
C A E
Main site: dataup.cdlib.org
Data Pub Blog: datapub.cdlib.org
DCXL blog: dcxl.cdlib.org
Toolbox:
carlystrasser.net dataup.cdlib.org/resources
My website Email me Tweet me My slides CDL Blog
carlystrasser.net [email protected] @carlystrasser slideshare.net/carlystrasser datapub.cdlib.org