The effect of increasing extracellular K+

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Activity 1: What was the effect of increasing extracellular K+ (related to diffusion)? How was this different than the change you observed with extracellular Na+? Why might this be?
Activity 3: How did the action potential at R1 (or R2) change as you increased the stimulus voltage above the threshold voltage? How does this relate to the term “all-or-none”?
Activity 4: Why are fewer action potentials recorded at R2 when lidocaine is applied between R1 and R2? Why might you receive lidocaine at the dentist (rather than, say TTX)?
Activity 5: What was the measured absolute refractory period for this neuron? What “occurs” during this time?
Activity 7: Which was the fastest and which was the slowest of the fibers you compared?
What is the relationship between nerve size and conduction velocity?
What is your conclusion regarding conduction velocity and whether the nerve is myelinated or not?
Activity 8: What happened to the amount of neurotransmitter release when you switched from the control extracellular fluid to the extracellular fluid with no Ca++? Why?
Activity 9: Why was there no response at R2 when you apply a very weak stimulus to the sensory receptor? Is there any depolarization that occurs?

Sample Solution

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DB 8 (500) Issues in Homeland Security and Course Wrap Up

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Topic: Issues in Homeland Security and Course Wrap Up

Answer the following questions in your thread:

What do you see as the number one most pressing issue regarding homeland security, and why do you say this?
What are your solutions to this issue?
Did this course cause you to change your mind or opinion about anything related to homeland security? If so, what was it?
Why or why not? Maybe something was reinforcedif so, explain.
What was the most important thing you learned in this course, and why (an “aha” moment)? 
Your thread must be completed by 11:59 p.m. (ET) on Wednesday of Module/Week 8, and your replies must be completed by 11:59 p.m. (ET) on Friday of the same module/week.

DB 7 (500) Understanding Critical Infrastructure

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Topic: Understanding Critical Infrastructure

Critical infrastructure includes a great many areas of concern and focus. Thinking back to risk and mitigation, these two areas tie directly to critical infrastructure protection, dont they? Within mitigation, we discussed two ways to mitigate: structural and non-structural efforts. 

What do you believe is our most vulnerable critical infrastructure (choose any you wish except the border)?
Why do you say this?
How would you enhance security regarding this type of infrastructure?
Remember there are two types of mitigation efforts.

The second part of this forum deals specifically with border security and immigration policy.

How secure are our borders?
Is it important to secure our borders, and if so, why or why not?
What would you propose to better secure our borders?
Your thread must be completed by 11:59 p.m. (ET) on Thursday of Module/Week 7, and your replies must completed by 11:59 p.m. (ET) on Sunday of the same module/week.

Cultural Literacy

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Introduction: Cultural literacy is critically important when it comes to sending personnel overseas to live and work. If there are family members also moving overseas, their acclimation to the new environment may affect the employees ability to perform successfully abroad.

Read the scenario and address the checklist items.

Scenario:
Sybil, as the global team manager, was hired to manage some new global teams for Alternating Energy Inc. (AEI), an alternative-energy company implementing wind and solar-generated energy systems throughout the globe. Sybil had worked previously for a gas exploration company in North America, so she simply hired many of her previous companys employees who had worked for her at the gas exploration company. Sybil deployed the teams along with their families to work with Indian nationals and clients in India. Since India is such a large country, although there is some autonomy for the teams, all decisions were made by Sybil and then subsequently communicated with the teams.

After 6 months in the field, the teams are not performing well. The team members are frustrated by what they term as internal conflicts and the clients lack of cooperation, and their families seem to be unhappy in the new environment. The AEI executive management team is beginning to ask questions not only regarding the teams performance but also regarding the hiring process used. AEI has an employee handbook saying that the company hires people based on abilities from a diverse pool of candidates that also represent their diversity of global clients.
Checklist:

Describe the problems you discern in this situation from the brief facts provided.
Describe how the global teams in India are managed versus how they should be managed.
Apply global HRM concepts from your reading to the hiring of the teams.
If you had been Sybil, how would you have applied all of the cultural acclimatization concepts from the Reading and Learning Activities areas that would fit this scenario at the outset to help the team members and their families successfully adjust to India?
Submit your minimum 2-page (i.e., 500 words) response in an original essay with additional title and reference pages in APA format and citation style to the MT203M5 Competency Assessment Dropbox.

Minimum Submission Requirements

This Assessment should be a Microsoft Word (minimum 500 words) document, in addition to the title and reference pages.
Respond to all the checklist items in a thorough manner, providing specific examples of concepts, topics, definitions, and other elements requested. Your submission should be highly organized, logical, and focused.
Be sure to cite both in-text and reference list citations where appropriate and reference all sources. Your sources and content should follow proper APA citation style.