How secure is the World Bank Cloud?

The World Bank Cloud is doubly secure. First, by relying on Amazon AWS, it provides best-in-class protections for even the most security-sensitive organizations and their data. External certifying bodies and independent security auditors have awarded Amazon AWS the long list of security accreditations listed below. Please visit AWS compliance resource pageĀ for more information. Second, on top of Amazon AWS' security protocols, the World Bank provides an additional layer of protection through its own additional security measures.

June 7, 2017

Comparing floating point numbers and precision problems

Our support service often receives reports on suspected bugs in Survey Solutions on the grounds of a situation similar to the one described below. These reports stem from misunderstanding of some fundamental concepts of how computations are done by a computer, and not due to an actual defect of the software. Problem description Suppose you have a questionnaire containing two numeric questions X and Y, and a third question Z with an enabling condition (X*Y) == 21.

February 6, 2017

Actions after the end of the survey

When the server is shut down all its data is removed permanently and irreversibly. Hence, at the end of your survey you need to secure the collected data. Instruct the interviewers to stop conducting interviews, mark them as completed. Synchronize all the interviews data from the tablets to the server. Do the final approvals/rejections of the submitted interviews. In HQ proceed to the data export screen. Download ALL data in all formats (tab-delimited and Stata and SPSS).

January 23, 2017

Actions during the survey

As a designated server administrator you will perform a number of key activities during the survey field work: Monitor the functioning of the server. Collect and analyze user problem reports. Attempt to address them to the extent possible. Refer the users to the corresponding sections of the manuals. Elevate the problems requiring developers' attention to support. Preserve the copies of the uploaded sample files and split-key files. Periodically download, back up, and securely store the export data.

January 23, 2017

Cloud Server Instructions

A Survey Solutions data server in the cloud is a secure and convenient solution. The data server could be provided for free to the end user and is serviced by the Survey Solutions team. The client has credentials of the Survey Solutions administrator and has access to the full set of features available to Survey Solutions administrator (including creating other user accounts). Besides the requester, only a small number of people from the Survey Solutions team have access to the server for support and maintenance.

January 23, 2017

What to do in case a tablet gets broken, damaged, or destroyed.

The tablets used for data collection may get damaged or broken during the field work. If this happens: interviewer should immediately report this to his/her supervisor; supervisor should inspect the tablet and confirm the damage (often interviewers report tablets as broken when the tablets completely discharge and require long-press for power button to power up); supervisor should record the loss of a tablet and issue a replacement (possibly taking notes on the specifics of the devices lost and issued: model, serial number, date, interviewer name and login, circumstances of the loss, etc).

January 23, 2017

Should and could I modify my questionnaire when the survey is in the field?

You could modify your questionnaire when the survey is already in the field. Survey Solutions treats any modifications of a questionnaire as a new survey. Even if the changes are minor, the modified questionnaire will be shown as a new survey both on tablets and in the HQ/Supervisor application. In general, we strongly advise against making changes in the questionnaire after the survey goes to the field. We do advise to plan extensive pre-testing and piloting survey prior to the field.

October 21, 2016

Should I buy cheap tablets?

Our users often ask us about the minimal specification for the tablets to be used with Survey Solutions. While we understand the desire to cut costs of conducting surveys, we recommend purchasing the most powerful tablets you can afford. With a very few exceptions, the total survey budget is much larger compared to the budget you spend even on the most powerful tablets. Modern tablets provide much better interviewer experience: they are more responsive and have longer battery life.

September 20, 2016

Why does the time recorded through date/time question is different from the time reported in GPS question?

An Android tablet has its internal clock. That clock is set based on specifications of the tablet manufacturer and on the user settings. For example, the tablet clock can be synchronized to the network time, or can be set by tablet users manually. The time reported in GPS question comes from the GPS signal provider. We recommend acquiring the GPS signal through satellites disabling the wifi coordinate services. However, geographic coordinates might be acquired through wifi.

September 9, 2016

My Survey Solutions server is not the latest version. Can I still use it with new surveys?

It is recommended that you upgrade your server to the latest version, but as long as you use only features that were available on your version of the server the new survey should work on the older server. Please note that you will not be able to import to the server questionnaires with features introduced in versions that are later than the version of your server.

September 7, 2016