Use knowledge of biological principles and the scientific method to ask and answer relevant questions about the human body
weigh and make health-related decisions based on an understanding of the value and limits of scientific knowledge and the scientific method
Before attempting this assignment, you might want to revisit the Scientific Method Tutorial in the Science Learning Center under the Course Content area.
Process:
Read the article summaries below, and choose one for your assignment report.
Review the assignment questions.
Retrieve the full article using the hyperlink provided right below the title.
Write a report that includes answers to the listed questions, numbered, in order.
Save your paper in the following format: LastName_Writing Assignment1.doc and submit to your Assignments folder for grading by the due date.
Your paper will automatically be evaluated by Turnitin.com when you submit it to your assignments folder. After you submit your assignment, you will see your submission listed in the “Completion Status” column. Click on your submission. This will take you to the Submission History. You will see your assignment with the Turnitin Similarity Score and color-coded bar. Click on the color-coded bar to review the Originality Report. This will take you to the Feedback Studio in a separate screen. Note: You will likely see results within a minute or two after you submit your assignment. Allow up to 15 minutes just in case the server is experiencing any delays. You can view the match score and the matching sources using the “red” icons in the righthand side panel. It will also highlight the matching text in your document. See more information about Turnitin below
Assignment Questions: Answer the following eight questions, numbered, in order, in your report. Missing question numbers or answers will score a zero. Write your report in your own words with proper grammar and spelling (10 points).
Title of the study you are analyzing:
What observations did the scientists make leading up to this research study? (10 points)
State the specific hypothesis that is being tested in this experiment. (10 points)
Describe the experimental design including control and treatment group(s) in this experiment. (10 points)
What are the dependent and independent variables in this experiment? (10 points)
Summarize the results and the conclusions of the experiment. (10 points)
Analyze the research study. Address at least two of the following questions in your critique of the experiment (20 points): Were the test subjects and treatments relevant and appropriate? Was the sample size large enough? Were the methods used appropriate? Can you think of a potential bias in a research study like this? What are the limitations of the conclusions made in this research study?
Discuss the relevance of this type of research, both for the world in general (10 points) and for you personally (10 points).
Scientific Article Summaries and Permalinks
The effects of topology and relative density of lattice liners on traumatic brain injury mitigation.
References
Khosroshahi, S. F., Duckworth, H., Galvanetto, U., & Ghajari, M. (2019). The effects of topology and relative density of lattice liners on traumatic brain injury mitigation. Journal of Biomechanics, 97, 109376. https://doi-org.ezproxy.umgc.edu/10.1016/j.jbiomech.2019.109376UMGC
Summary: This paper evaluates the effects of topology and relative density of helmet lattice liners on mitigating Traumatic Brain Injury (TBI). Finite Element (FE) models of new lattice liners with prismatic and tetrahedral topologies were developed. A typical frontal head impact in motorcycle accidents was simulated, and linear and rotational accelerations of the head were recorded. A high-fidelity FE model of TBI was loaded with the accelerations to predict the brain response during the accident. The results show that prismatic lattices have better performance in preventing TBI than tetrahedral lattices and EPS that is typically used in helmets. Moreover, varying the cell size through the thickness of the liner improves its performance, but this effect was marginal. The relative density also has a significant effect, with lattices with lower relative densities providing better protection. Across different lattices studied here, the prismatic lattice with a relative density of 6% had the best performance and reduced the peak linear and rotational accelerations, Head Injury Criterion (HIC), brain strain and strain rate by 48%, 37%, 49%, 32% and 65% respectively, compared to the EPS liner. These results can be used to guide the design of lattice helmet liners for better mitigation of TBI.
Sample Solution