Dean Jones says:

Perhaps you are correct...Here is my offer:  For every high-quality refereed journal article, I will give you a bonus equivalent to +20 percentile for each publication and +7 for each presentation. 

Ah...I can see you are pleased by this offer...

This will allow you to maximize your income at the 99th percentile, assuming you publish at least three articles per year and give two conference presentations.

Excellent!  Here is the contract package we have agreed to: 

**TWO guaranteed trips to a conference each year for two years

**One graduate research assistant for two years.

**$2,000 for software to analyze data

**$12,000 for hardware (i.e., special computer processor and other equipment)

**A nine-month salary at the 25th percentile.  However, For every high-quality refereed journal article, I will give you a bonus equivalent to +20 percentile, and for each conference presentation, I will give you a bonus equivalent to +7 percentile.   Your minimum salary will be the 25th percentile, but you can max out at the 99th percentile.

**Required to teach two summer sessions, none of which count toward your teaching load

**Three-day-a-week teaching schedule.

Welcome to our university!"

Critique: 

What techniques did you use to reach this agreement? 

What techniques did the dean use? 

You got above-average outcomes for software and hardware and you got a graduate student research assistant for more than one year.  The "salary + bonus" system will give you the opportunity to maximize your income, but it will still require a moderate amount of "output" for you to do that.  Perhaps you want to try again to see if you can get a better deal.