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Show Results For
- All HBS Web
(610)
- People (4)
- News (123)
- Research (278)
- Events (3)
- Multimedia (3)
- Faculty Publications (163)
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- January 2003 (Revised May 2005)
- Case
Zipcar: Refining the Business Model
By: Myra M. Hart, Michael J. Roberts and Julia Stevens
Zipcar is a start-up organized around the idea of "sharing" car usage via a membership organization. This case describes several iterations of the Zipcar business model and financial plan. These iterations include a very early version and a version developed just prior... View Details
Keywords: Service Operations; Renting or Rental; Business Model; Business Plan; Entrepreneurship; Economic Growth; Management Skills; Transportation; Business Startups; Financial Strategy; Corporate Finance; Growth and Development Strategy; Transportation Industry; Service Industry
Hart, Myra M., Michael J. Roberts, and Julia Stevens. "Zipcar: Refining the Business Model." Harvard Business School Case 803-096, January 2003. (Revised May 2005.)
- September 2007 (Revised November 2008)
- Case
Sinopec: Refining its Strategy
By: Richard H.K. Vietor and Julia Galef
China's oil industry, with majority ownership vested in the government, had engaged in an "equity oil" strategy for the past few years-acquiring equity interests in oil producing nations including Sudan, Angola, and Iran. Outside critics, however, suggested that the... View Details
Keywords: Non-Renewable Energy; Equity; Foreign Direct Investment; Growth and Development Strategy; Demand and Consumers; State Ownership; Energy Industry; China
Vietor, Richard H.K., and Julia Galef. "Sinopec: Refining its Strategy." Harvard Business School Case 708-018, September 2007. (Revised November 2008.)
- June 2017
- Teaching Note
Qalaa Holdings and the Egyptian Refining Company
By: Victoria Ivashina and Jeffrey Boyar
Teaching Note for HBS No. 217-011 View Details
- September 2016 (Revised March 2018)
- Case
Qalaa Holdings and the Egyptian Refining Company
By: Victoria Ivashina and Marc Homsy
This case follows Qalaa Holdings, a successful Egypt-based private equity firm, and gives insight into the types of investments it pursued, its growth over time, and the limited partner base it had at hand. It also allows students to consider and debate whether the... View Details
Keywords: Africa; Structuring And Financing Large Projects; Private Equity; Infrastructure; Project Finance; Emerging Markets; Financial Services Industry; Egypt; Africa
Ivashina, Victoria, and Marc Homsy. "Qalaa Holdings and the Egyptian Refining Company." Harvard Business School Case 217-011, September 2016. (Revised March 2018.)
- Other Article
Should You Refinance Your Mortgage with Your Current Lender?
By: David Hao Zhang
Zhang, David Hao. "Should You Refinance Your Mortgage with Your Current Lender?" MortgageWaldo.com (2018).
- September 2003 (Revised February 2010)
- Teaching Note
Zipcar: Refining the Business Model (TN)
Teaching Note for (9-803-096), (9-806-717), and (9-806-718). View Details
- July 1987
- Case
Sun Refining and Marketing Co. (B)
By: D. Quinn Mills and G Bruce Friesen
Mills, D. Quinn, and G Bruce Friesen. "Sun Refining and Marketing Co. (B)." Harvard Business School Case 488-005, July 1987.
- July 1987
- Case
Sun Refining and Marketing Co. (A)
By: D. Quinn Mills and G Bruce Friesen
Keywords: Energy Industry
Mills, D. Quinn, and G Bruce Friesen. "Sun Refining and Marketing Co. (A)." Harvard Business School Case 488-004, July 1987.
- 1990
- Chapter
Refinement of Nash Equilibrium: The Main Ideas
By: E. Kohlberg
Keywords: Mathematical Methods
Kohlberg, E. "Refinement of Nash Equilibrium: The Main Ideas." In Game Theory and Applications, edited by T. Ichiishi, A. Neyman, and Y. Tauman. San Diego: Academic Press, 1990.
- November 1989
- Case
CPC International: The Shift from Corn Refining to Consumer Goods
By: Ray A. Goldberg
Keywords: Marketing
Goldberg, Ray A. "CPC International: The Shift from Corn Refining to Consumer Goods." Harvard Business School Case 590-064, November 1989.
- 11 Aug 2014
- Working Paper Summaries
Decision Making Under Information Asymmetry: Experimental Evidence on Belief Refinements
Keywords: by William Schmidt & Ryan W. Buell
- Article
Refined Configuration Results for Extremal Type II Lattices of Ranks 40 and 80
By: Noam D. Elkies and Scott Duke Kominers
We show that, if L is an extremal Type II lattice of rank 40 or 80, then L is generated by its vectors of norm min(L)+2. This sharpens earlier results of Ozeki, and the second author and Abel, which showed that such lattices L are generated by their vectors of norms... View Details
Keywords: Mathematical Methods
Elkies, Noam D., and Scott Duke Kominers. "Refined Configuration Results for Extremal Type II Lattices of Ranks 40 and 80." Proceedings of the American Mathematical Society 138, no. 1 (January 2010): 105–108.
- Article
Hinged Dissections Exist
By: Timothy G. Abbott, Zachary Abel, David Charlton, Erik D. Demaine, Martin L. Demaine and Scott Duke Kominers
We prove that any finite collection of polygons of equal area has a common hinged dissection. That is, for any such collection of polygons there exists a chain of polygons hinged at vertices that can be folded in the plane continuously without self-intersection to form... View Details
Abbott, Timothy G., Zachary Abel, David Charlton, Erik D. Demaine, Martin L. Demaine, and Scott Duke Kominers. "Hinged Dissections Exist." Discrete & Computational Geometry 47, no. 1 (January 2012): 150–186.
- June 2013 (Revised June 2014)
- Case
Valero Energy Corporation and Tight Oil
By: Richard H.K. Vietor, Eric Adamson, Aaron Byrd, Ned Chiverton, Mariko Meier and Rob Rain
Valero Energy, an incredibly successful US refiner, needs to make some decisions about tight oil. As production of light tight oil increases—from Eagle Ford, Bakken and elsewhere—Valero considers whether to add topping capacity to handle it, on top of its recent... View Details
Keywords: Petroleum; Oil ＆ Gas; Energy; Environment; Refining; Globalization; Tight Oil; Strategy; Natural Environment; Demand and Consumers; Supply and Industry; Policy; Energy Sources; Energy Industry; United States
Vietor, Richard H.K., Eric Adamson, Aaron Byrd, Ned Chiverton, Mariko Meier, and Rob Rain. "Valero Energy Corporation and Tight Oil." Harvard Business School Case 713-083, June 2013. (Revised June 2014.)
- Oct 09 2014
- Testimonial
From Recession to Double-Digit Growth
- 14 Sep 2018
- Blog Post
10 Things I Learned During My First Month in the MS/MBA: Engineering Sciences Program
skills with big-picture business vision. I chose Harvard’s MS/MBA: Engineering Sciences Program to become a strong leader while also refining the skills I would need to succeed in deeply technical fields. I arrived in Boston on an... View Details
- Sep 08 2017
- Testimonial
Taking Leadership Personally
- Feb 07 2018
- Testimonial
Taking Leadership to a Whole New Level
- 31 Aug 2020
- Video
Hollis Search
- February 2025
- Supplement
Intenseye: Powering Workplace Health and Safety with AI (B)
By: Michael W. Toffel, Shane Greenstein and Sadika El Hariri
Intenseye used its $25 million series A funds to refine and expand its digital safety platform while refining its target markets and ideal customer profile. As the company implemented new approaches to create value for its clients, such as developing an AI-powered... View Details
Keywords: Safety Performance; Occupational Safety; Innovation; Safety; Operations; Health; AI and Machine Learning; Analytics and Data Science; Digital Transformation; Supply Chain Management; Performance Improvement; Entrepreneurship; Product Development; Customer Relationship Management; Value Creation; Venture Capital; Growth and Development Strategy; Information Technology Industry; United States; Europe; Middle East; Turkey
Toffel, Michael W., Shane Greenstein, and Sadika El Hariri. "Intenseye: Powering Workplace Health and Safety with AI (B)." Harvard Business School Supplement 625-025, February 2025.