#1 bear protection is odor control. Bears sense of smell is like sharks being able to smell blood in water. So controlling odors is the first step. Cleaning up after meals removing any odor causing food waste. Storing food in as air tight containers as you can find. Or up in an anti bear food cache. An elevated pantry away from the house with metal collars around the legs to prevent climbing.

The bear cache is the standard for people living in bear country. Not having bird feeders, pet food, dirty grill, etc all also help reduce odors. Be vigilant about trash, and store trash in a bear proof container double bagged to reduce smells.
#2 protection, electric fence. You can ring your yurt with an electric fence to shock any would be bear into leaving your place alone. Draw back is it does need power, and can look unsightly if just put up around the place. You can blend it into the landscaping or decking to make it less of an eye sore.
#3 avoidance, elevated platform. Raise your yurt up enough and gate your stairs so they don't allow a bear access.
Hopefully these ideas will help. Key to not having a bear problem is to not give them a reason to consider you place a food source. So odor control is the #1 thing to work on first. Once you have a bear problem because it was attracted to your place, it will keep coming back. so keep the odors in control and you will have a much easier time.