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Studies: 1986 | Downloads: 42415
Description:

The lack of robust, spatially distributed subsurface data is the key obstacle limiting the implementation of complex and realistic groundwater dynamics into global land surface, hydrologic, and climate models. We map and analyze permeability and porosity globally and at high resolution for the first time. The new permeability and porosity maps are based on a recently completed high-resolution global lithology map that differentiates fine and coarse-grained sediments and sedimentary rocks, which is important since these have different permeabilities. The average polygon size in the new map is ~100 km2, which is a more than hundredfold increase in resolution compared to the previous map which has an average polygon size of ~14,000 km2. We also significantly improve the representation in regions of weathered tropical soils and permafrost. The spatially distributed mean global permeability ~10-15m2 with permafrost or ~1014m2 without permafrost. The spatially distributed mean porosity of the globe is 14%. The maps will enable further integration of groundwater dynamics into land surface, hydrologic, and climate models.

hdl:11272/10507
2 downloads
Last Released: Sep 15, 2017
Transcriptomic correlates of neuron electrophysiological diversityby Tripathy, Shreejoy; Toker, Lilah; Li, Brenna; Crichlow, Cindy-Lee; Tebaykin, Dmitry; Mancarci, Ogan; Shreejoy Tripathy
Description:

How neuronal diversity emerges from complex patterns of gene expression remains poorly understood. Here we present an approach to understand electrophysiological diversity through gene expression by integrating pooled- and single-cell transcriptomics with intracellular electrophysiology. Using neuroinformatics methods, we compiled a brain-wide dataset of 34 neuron types with paired gene expression and intrinsic electrophysiological features from publically accessible sources, the largest such collection to date. We identified 420 genes whose expression levels significantly correlated with variability in one or more of 11 physiological parameters. We next trained statistical models to infer cellular features from multivariate gene expression. Such models were predictive of gene-electrophysiological relationships in an independent collection of 12 visual cortex cell types from the Allen Institute, suggesting that these correlations might reflect general principles relating expression patterns to phenotypic diversity across very different cell types. Many associations reported here have the potential to provide new insights into how neurons generate functional diversity, and correlations of ion channel genes like Gabrd and Scn1a (Nav1.1) with resting potential and spiking frequency are consistent with known causal mechanisms. Our work highlights the promise and inherent challenges in using cell type-specific transcriptomics to understand the mechanistic origins of neuronal diversity.

hdl:11272/10485
11 downloads
Last Released: Sep 11, 2017
Multivariate maps of forest attributes for management units in Canada's boreal forestby Kyle Lochhead; Valerie LeMay; Gary Bull; Olaf Schwab; James Halperin
Description:

A spatially explicit “wall to wall” forest inventory of percent crown closure (CC), average height (Ht), average age (Age), and commercial species percentages derived using a multi-source inventory approach from Lochhead et al. (2017). This process involved compiling a suite of spatial layers including Landsat TM/ETM+ imagery, interpolated climate variables, topographic variables and other remote sensing products to be used as predictors and Canada’s National Forest Inventory photo plot information (1986-2010) as the source of dependant variables.Following Lochhead et al.(2017) the application used a method called kriging with external drift which relies on a system of non-linear models with spatially varying parameters to produce multivariate maps for the year 2010 at a 90m x 90m pixel resolution. The resulting maps are clipped to each forest management area (FMA) boundary which was sourced online (www.databasin.org). For cases, where a 90 m x 90 m pixel window overlapped non-vegetated area (e.g., waterbodies) the forest attribute information was averaging using only the vegetated pixels (i.e., prorating). For more information on methods refer to the publication.

hdl:11272/10515
6 downloads
Last Released: Aug 15, 2017
Description:

The Labour Force Survey provides estimates of employment and unemployment which are among the most timely and important measures of performance of the Canadian economy. With the release of the survey results only 10 days after the completion of data collection, the LFS estimates are the first of the major monthly economic data series to be released.

The Canadian Labour Force Survey was developed following the Second World War to satisfy a need for reliable and timely data on the labour market. Information was urgently required on the massive labour market changes involved in the transition from a war to a peace-time economy. The main objective of the LFS is to divide the working-age population into three mutually exclusive classifications - employed, unemployed, and not in the labour force - and to provide descriptive and explanatory data on each of these.

LFS data are used to produce the well-known unemployment rate as well as other standard labour market indicators such as the employment rate and the participation rate. The LFS also provides employment estimates by industry, occupation, public and private sector, hours worked and much more, all cross-classifiable by a variety of demographic characteristics. Estimates are produced for Canada, the provinces, the territories and a large number of sub-provincial regions. For employees, wage rates, union status, job permanency and workplace size are also produced. For a full listing and description of LFS variables, see the Guide to the Labour Force Survey (71-543-G), available through the "Publications" link above.

These data are used by different levels of government for evaluation and planning of employment programs in Canada. Regional unemployment rates are used by Employment and Social Development Canada to determine eligibility, level and duration of insurance benefits for persons living within a particular employment insurance region. The data are also used by labour market analysts, economists, consultants, planners, forecasters and academics in both the private and public sector.

Important note -- 4 August 2017

Labour Force Survey (LFS) data from January 2017 – July 2017 contained errors with numerical variables. Variables such as HRLYARN and UHRSMAIN were missing decimal place holders. As such, their values were off by a factor of 100. The issue has been addressed and the data for the year re-released

hdl:11272/10439
42 downloads + analyses
Last Released: Aug 4, 2017
Description:

UBC Library uses Desk Tracker software to record staff interactions with library patrons. Interactions are classified by type based on the nature of question and the effort and expertise required to respond. The question types used in this dataset can be mapped to the Association of Research Libraries' (ARL) definitions for reference and directional interactions:

  • Reference (Basic, Intermediate, Advanced, and Comprehensive interaction types): "an information contact that involves the knowledge, use, recommendations, interpretation, or instruction in the use of one or more information sources by a member of the library staff."
  • Directional (Hardware/authentication and Directional interaction types): "an information contact that facilitates the logistical use of the library and that does not involve the knowledge, use, recommendations, interpretation, or instruction in the use or creation of information sources other than those that describe the library, such as schedules, floor plans, and handbooks."

Please contact Jeremy Buhler at jeremy.buhler@ubc.ca if you have questions.

hdl:11272/10258
88 downloads
Last Released: Jul 26, 2017
Description:

LibQUAL is a standardised survey instrument developed by the Association of Research Libraries (ARL) that measures user perceptions of library services. Libraries implement LibQUAL periodically to better understand user priorities and to monitor library performance relative to student and faculty expectations.

The survey questions focus on three service areas:

  • library collections and access
  • customer services
  • library physical spaces

UBC Library has released LibQUAL data from 2007, 2010, and 2013.

Please contact Jeremy Buhler at jeremy.buhler@ubc.ca if you have questions.

hdl:11272/10259
44 downloads
Last Released: Jul 26, 2017
Description:

Circulation transaction records for all items with barcodes checked out during the report date range. Excludes use of ebooks and ejournals.

Please contact Jeremy Buhler at jeremy.buhler@ubc.ca if you have questions.

hdl:11272/10257
111 downloads
Last Released: Jul 26, 2017
Description:

The Employment Insurance Coverage Survey provides a meaningful picture of who does or does not have access to EI benefits among the jobless and those in a situation of underemployment. The survey also covers access to maternity and parental benefits.

The main purpose of this survey is to study the coverage of the employment insurance program. It provides a meaningful picture of who does or does not have access to EI benefits among the jobless and those in a situation of underemployment. The Employment Insurance Coverage Survey also covers access to maternity and parental benefits.

The survey was designed to produce a series of precise measures to identify groups with low probability of receiving benefits, for instance, the long-term jobless, labour market entrants and students, people becoming unemployed after uninsured employment, people who have left jobs voluntarily and individuals who are eligible, given their employment history, but do not claim or otherwise receive benefits. The survey provides a detailed description of the characteristics of the last job held as well as reasons for not receiving benefits or for not claiming.

Through the survey data, analysts will also be able to observe the characteristics and situation of people not covered by EI and of those who exhausted EI benefits, the job search intensity of the unemployed, expectation of recall to a job, and alternate sources of income and funds.

Survey data pertaining to maternity and parental benefits answer questions on the proportion of mothers of an infant who received maternity and parental benefits, the reason why some mothers do not receive benefits and about sharing parental benefits with their spouse. The survey also allows looking at the timing and circumstances related to the return to work, the income adequacy of households with young children and more.

hdl:11272/10412
15 downloads + analyses
Last Released: Jul 20, 2017
Description:

The main purpose of this survey is to study the coverage of the employment insurance program. It provides a meaningful picture of who does or does not have access to EI benefits among the jobless and those in a situation of underemployment. The Employment Insurance Coverage Survey also covers access to maternity and parental benefits.

The survey was designed to produce a series of precise measures to identify groups with low probability of receiving benefits, for instance, the long-term jobless, labour market entrants and students, people becoming unemployed after uninsured employment, people who have left jobs voluntarily and individuals who are eligible, given their employment history, but do not claim or otherwise receive benefits. The survey provides a detailed description of the characteristics of the last job held as well as reasons for not receiving benefits or for not claiming.

Through the survey data, analysts will also be able to observe the characteristics and situation of people not covered by EI and of those who exhausted EI benefits, the job search intensity of the unemployed, expectation of recall to a job, and alternate sources of income and funds.

Survey data pertaining to maternity and parental benefits answer questions on the proportion of mothers of an infant who received maternity and parental benefits, the reason why some mothers do not receive benefits and about sharing parental benefits with their spouse. The survey also allows looking at the timing and circumstances related to the return to work, the income adequacy of households with young children and more.

hdl:11272/10346
8 downloads + analyses
Last Released: Jul 20, 2017
Description:

Commuting Flows for British Columbia Census Metropolitan Areas/Census Agglomerations and Census Tracts: Mode of Transportation (15) and Sex (3) for the Employed Labour Force 15 Years and Over Having a Usual Place of Work and Residing in Private Households, 2011 National Household Survey

hdl:11272/10501
1 download
Last Released: Jun 30, 2017
 
 
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