STRmix USA Workshop, Olathe, Kansas, 15-18 July 2019

Monday, 25 February 2019

Spaces are limited, so please download the registration form by clicking here [PDF, 92 KB], and then email it to before 1 June 2019 to register your interest (1 form per participant).  This training is in STRmix™ v2.6, and is open for attendance by scientific experts that act for prosecution or defense legal teams. Attendance will be confirmed once minimum attendee numbers are met.

Location:  Johnson County Sheriff’s Office Crime Laboratory, 11890 S. Sunset Dr., Olathe, KS 66061. For out of state attendees it is recommended to fly in to Kansas City International Airport and rent a car, given the training location is about 43 miles from the airport. For hotel recommendations please click here: STRmix-workshop-Olathe-Kansas-USA-15-18-July-2019-hotel-recommendations-compressed.pdf

Workshop price: $US 3,000 per participant

Overview:  This workshop will provide participants with extensive and full STRmix™ user training, covering likelihood ratios and sampling uncertainty, introduction to STRmix™, and a detailed description of the molecular models and mathematics on which STRmix™ is based.  Also included are ample “hands on” sessions to allow participants to use and familiarise themselves with STRmix™ under the guidance of the instructors.

 Participants will also receive:

  • the STRmix™ User’s manual, with a companion text which describes in detail the mathematics and biology behind STRmix™, the database search and model maker functions
  • the STRmix™ Implementation and Validation guide
  • a 2-month evaluation version of STRmix™ v2.6.


Draft schedule (subject to minor changes):


Day 1

Day 2

Day 3

Day 4

0900 – 0930


Day 1 review

Day 2 review

Day 3 review

2. Continuous models. Why move?

14. Variability in the LR (sampling error and the HPD)


19b.EXERCISE Moot court

0930 - 1000

9. EXERCISE. The MCMC game & Robot

3. Introduction to LRs 

15. Relatives and unified LR 

1000 - 1030

20. Database searching

& EXERCISE. Database search functions

1030 - 1100

4. Introduction to STRmix™

1100 - 1130

5. EXERCISE. Single source and mixture examples

10. Number of contributors


21. EXERCISE. Casework examples

1130 - 1200

1200 - 1300





1300 - 1330

6. The biological model

11. EXERCISE. Number of contributors

17. EXERCISE. NIST mix continued

22. Replicates & Multi Kits

1330 - 1400

12. Population Genetic Models

(NRC II report & recommendations 4.1 and 4.2)

1400 - 1430

7. Verbalizing LRs and hypothesis setting and EXERCISE

 18. Developmental Validation

23. Workflows discussion

1430 - 1500

24. Implementation discussion

1500 - 1530

 13. STRmix™ output and diagnostics



19a. EXERCISE Moot Court

1530 - 1600

8. STRmix™ profile building and locus weights

25. Wrap up

1600 - 1630









STRmix™ Trial version installation: This will be a remote installation of STRmix v2.6 approximately a week before the start of the workshop.  A laptop is required during the workshop and the specifications are as follows:


Minimum specifications

Recommended specifications

Intel core 2 (Quad core) processor

Intel core i5, i7 processor  or better



300MB free HDD space

300MB free HDD space

Minimum of 2 cores

Minimum of 4 cores

Windows 7 or above

Windows 7 Professional 64 bit

 Note:  Please ensure that your PC has USB access.

Software specifications:

  • Windows 7 service pack 1, Windows 8.1 or Windows 10
  • MS Excel and Adobe Acrobat Reader.
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