A .PK after a stock ticker means it's listed by the OTC Markets Group Inc. This company lists stocks, usually over-the-counter securities, from market-makers and brokers who use the group to list selling prices as well ask and bid prices.
1 It may usually involves learning qualitative research methods such as literary analysis and ethnography.  Bachelor of Science (BS). This degree may usually requires a majority of coursework be taken in the sciences, such as life sciences, physical sciences, or mathematical sciences. It may be more focused on quantitative analysis, such as statistics and other forms of number-crunching.
Bachelor of Science programs are available in a variety of disciplines, but all typically include the education and training needed to perform general engineering practices in the field of your choice. Programs typically include a combination of math and science courses, along with coursework specific to the area of study.