To Open or Not to Open: Korean Rice Market

Whether or not to open Pandora’s box

Weitzman’s [13] search model requires that, conditional on stopping, theagent only takes boxes which have already been inspected. We relax thisassumption and allow the agent to take any uninspected box without in-specting its contents when stopping. Thus, each uninspected box is nowa potential outside option. This introduces a new trade-off: every timethe agent inspects a bo...

Open Market Repurchases: Signaling or Managerial Opportunism?

Managers conduct open market repurchases ("OMRs") for many different reasons, including to distribute excess cash. However, the most widely discussed explanation for OMRs is the "signaling theory": that managers announce OMRs to signal that the stock is underpriced. The first purpose of this paper is to show that the signaling theory is theoretically problematic—in part because it assumes manag...

Folic Acid Supplementation: to Advise or not to Advise?

The treatment of condylar fractures: to open or not to open? A critical review of this controversy

The treatment of condylar process fractures has generated a great deal of discussion and controversy in oral and maxillofacial trauma and there are many different methods to treat this injury. For each type of condylar fracture, the techniques must be chosen taking into consideration the presence of teeth, fracture height, patient's adaptation, patient's masticatory system, disturbance of occlu...

Mitosis, not just open or closed.

During cell division, eukaryotic cells must faithfully pass on their genetic material to the next generation during mitosis. It has long been known that lower eukaryotes and higher eukaryotes achieve this in strikingly different ways. Higher eukaryotes undergo an open mitosis in which the nuclear envelope is completely disassembled at the G2/M transition and is not reassembled until after DNA s...