By Carr R.

We research the approximability of the weighted edge-dominating set challenge. even though even the unweighted case is NP-Complete, accordingly an answer of measurement at such a lot two times the minimal might be successfully computed as a result of its shut courting with minimal maximal matching; even if, within the weighted case this sort of great courting isn't recognized to exist. during this paper, after exhibiting that weighted area domination is as not easy to approximate because the good studied weighted vertex hide challenge, we reflect on a ordinary technique, reducingedge-dominating set to area hide.

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3 shows the questions used to identify physical impairments in each of the national surveys. The surveys also differ in both the number and content of the questions used to identify physical impairments. 3 Survey Questions Used by National Surveys to Identify Physical Limitations Data source ACS Question Does this person have any of the following long lasting conditions: b. A condition that substantially limits one or more basic physical activities such as walking, climbing stairs, reaching, lifting, or carrying?

Sitting for one hour? c. Stooping, crouching, or kneeling? d. Reaching over your head? Do you have difficulty using your hands and fingers to do things such as picking up a glass or grasping a pencil? Are you able to use your hands and fingers to grasp and handle at all? Do you have any difficulty walking up a flight of 10 stairs? Are you able to walk up a flight of 10 stairs at all? Do you have any difficulty walking a quarter of a mile—about 3 city blocks? Are you able to walk a quarter of a mile at all?

Individuals with a combined score of 13 or greater were classified, under the Kessler Index, as having a mental disability. SIPP Do you have… a. A learning disability such as dyslexia? b. Mental retardation? c. A developmental disability such as autism or cerebral palsy? d. Alzheimer’s disease or any other serious problem with confusion or forgetfulness? e. Any other mental or emotional condition? SOURCE: Actual survey questionnaires as reported in Weathers (2005, ACS), Burkhauser and Houtenville (2006, CPS), Erickson and Houtenville (2005, Decennial Census), Harris, Hendershot, and Stapleton (2005, NHIS), and Wittenburg and Nelson (2006, SIPP).

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