Web cookies (also called HTTP cookies, browser cookies, or simply cookies) are small pieces of data that websites store on your device (computer, phone, etc.) through your web browser. They are used to remember information about you and your interactions with the site.
Purpose of Cookies:
Session Management:
Keeping you logged in
Remembering items in a shopping cart
Saving language or theme preferences
Personalization:
Tailoring content or ads based on your previous activity
Tracking & Analytics:
Monitoring browsing behavior for analytics or marketing purposes
Types of Cookies:
Session Cookies:
Temporary; deleted when you close your browser
Used for things like keeping you logged in during a single session
Persistent Cookies:
Stored on your device until they expire or are manually deleted
Used for remembering login credentials, settings, etc.
First-Party Cookies:
Set by the website you're visiting directly
Third-Party Cookies:
Set by other domains (usually advertisers) embedded in the website
Commonly used for tracking across multiple sites
Authentication cookies are a special type of web cookie used to identify and verify a user after they log in to a website or web application.
What They Do:
Once you log in to a site, the server creates an authentication cookie and sends it to your browser. This cookie:
Proves to the website that you're logged in
Prevents you from having to log in again on every page you visit
Can persist across sessions if you select "Remember me"
What's Inside an Authentication Cookie?
Typically, it contains:
A unique session ID (not your actual password)
Optional metadata (e.g., expiration time, security flags)
Analytics cookies are cookies used to collect data about how visitors interact with a website. Their primary purpose is to help website owners understand and improve user experience by analyzing things like:
How users navigate the site
Which pages are most/least visited
How long users stay on each page
What device, browser, or location the user is from
What They Track:
Some examples of data analytics cookies may collect:
Page views and time spent on pages
Click paths (how users move from page to page)
Bounce rate (users who leave without interacting)
User demographics (location, language, device)
Referring websites (how users arrived at the site)
Here’s how you can disable cookies in common browsers:
1. Google Chrome
Open Chrome and click the three vertical dots in the top-right corner.
Go to Settings > Privacy and security > Cookies and other site data.
Choose your preferred option:
Block all cookies (not recommended, can break most websites).
Block third-party cookies (can block ads and tracking cookies).
2. Mozilla Firefox
Open Firefox and click the three horizontal lines in the top-right corner.
Go to Settings > Privacy & Security.
Under the Enhanced Tracking Protection section, choose Strict to block most cookies or Custom to manually choose which cookies to block.
3. Safari
Open Safari and click Safari in the top-left corner of the screen.
Go to Preferences > Privacy.
Check Block all cookies to stop all cookies, or select options to block third-party cookies.
4. Microsoft Edge
Open Edge and click the three horizontal dots in the top-right corner.
Go to Settings > Privacy, search, and services > Cookies and site permissions.
Select your cookie settings from there, including blocking all cookies or blocking third-party cookies.
5. On Mobile (iOS/Android)
For Safari on iOS: Go to Settings > Safari > Privacy & Security > Block All Cookies.
For Chrome on Android: Open the app, tap the three dots, go to Settings > Privacy and security > Cookies.
Be Aware:
Disabling cookies can make your online experience more difficult. Some websites may not load properly, or you may be logged out frequently. Also, certain features may not work as expected.
Professor Matthew Stuber, PhD and Dr. Matthew Wilhelm's most recent publication presents new and improved methods for generating convex and concave relaxations of composite bilinear forms. They establish the theoretical framework to generate tighter McCormick-based relaxations in reduced space when intermediate bilinear terms have known convex or concave relaxations. These developments translate into significant speedups when solving deterministic global optimization problems involving these ubiquitous mathematical terms. To read the full publication, click here.
The CBE Department would like to congratulate Professor Cato T. Laurencin on receiving the Priestley Medal, the highest honor in Chemistry after the Nobel Prize. This award recognizes his pioneering work in the fields of polymer science, biomaterials, and regenerative engineering, which has transformed the landscape of modern medicine. Professor Laurencin is an inspiration to many, and his contributions to science will have a lasting impact on generations to come.
To read Dr. Laurencin's speech in Chemical & Engineering News, please click here.
A new center composed of interdisciplinary researchers, including CBE faculty members Yu Lei and Matthew Stuber, has been established to address the industry's need for reliable soil sensors. The center will focus on developing innovative solutions for measuring soil properties using hydrogels, and it is sponsored by the National Science Foundation's Industry-University Cooperative Research Centers (IUCRC) Program. This research will support the development of precision agriculture, an approach that focuses on applying fertilizers or pesticides only in the areas needed, decreasing the accumulation of dangerous chemicals, promoting plant health, and helping farmers save money. To read more about the center, click here.
Honoring the work of our Emeritus Professor, Dr. Montgomery Shaw, the SPE Applied Rheology Division recently hosted the full-day Shaw Symposium for Polymer Processing, Rheology, and Characterization. The event brought together renowned colleagues who presented their work in rheology and polymer processing at a special symposium, celebrating Dr. Shaw's many contributions to the field. As a pioneer in rheology, Dr. Shaw is an influential researcher whose work helped shape the field of polymer processing.
Read more here in the latest issue of Plastics Engineering magazine.
Leslie Shor on Sept. 5, 2019. (Peter Morenus/UConn Photo)
The CBE Department would like to congratulate Dr. Leslie Shor on her promotion to Professor! For a full list of UConn's 2023 promotion and tenure awards, please click here.
The CBE Department would like to congratulate Dr. Matthew Stuber on his promotion to Associate Professor with Tenure! For a full list of UConn's 2023 promotion and tenure awards, please click here.