We propose a method of generating teaching policies for use in intelligent tutoring systems (ITS) for concept learning tasks [37], e.g., teaching students the meanings of words by showing images that exemplify their meanings à la Rosetta Stone [30] and Duo Lingo [13]. The approach is grounded in control theory and capitalizes on recent work by [28], [29] that frames the “teaching” problem as th...

In the United States each year colon cancer is diagnosed in approximately 100,000 people and rectal cancer is diagnosed in another 50,000.1 Colorectal cancer usually affects older adults, with 90 percent of cases diagnosed in individuals 50 years of age and older.2 Colorectal cancer is often fatal, with approximately 50,000 deaths attributed to it each year in the United States.1 As such, it is...

www.aafp.org/afp AMERICAN FAMILY PHYSICIAN 1269 involves human papillomavirus (HPV) infection, which leads to VIN and predisposes the patient to vulvar cancer. The second type involves vulvar non-neoplastic epithelial disorders (VNED) and advanced age, leading to cellular atypia and cancer (Table 1). Vulvar cancer most frequently occurs in women 65 to 75 years of age. It can develop in younger ...

OBJECTIVE The increased demand for emergency department (ED) services over the past decade has resulted in crowding. This report presents estimates of structure and process characteristics of hospital EDs related to their capacity to treat medical and surgical emergencies. Estimates of EDs experiencing crowded conditions are also presented. METHODS Several facility supplements were added to t...