Academic literature on the topic 'LD5655.V851 1990.F467'

The purpose of this two-phase study was to investigate the effects of rate of presentation and type of material on the use of visual imagery in learning disabled (LD) and average achieving (AA) students. In the first phase, a norming study, 15 LD and 15 AA students were instructed to generate images for a list of concrete paired associates. The amount of time required to generate an image and the particular inlage reported was recorded. Based upon processing time and an image similarity index, 18 easy-to-relate and 18 difficult-to-relate word pairs were identified. Two rates of presentation (5 seconds and 10 seconds) were also determined in the norming study. In the second phase, an experimental study, 40 LD and 40 AA students were presented with the word pairs derived from the norming study, at a 5 second and a 10 second rate. The experimental task involved learning the word paIrs under either imagery or rehearsal instructions. Students were tested for associative recall after each learning trial by being presented one member of each pair and being required to recall its pairmate. Subjects were subsequently asked to report on the strategies they implemented to learn the word pairs. Data were analyzed using a 2 x 2 x 2 x 2 (group x instruction x presentation rate x pair difficulty) ANOVA with repeated measures on the last two factors. A series of separate imagery/rehearsal planned comparisons were conducted within each group/ presentation rate/pair difficulty combination. In addition, descriptive statistics were computed on the number and types of strategies reported by the students. Both LD and AA students benefited from the imagery strategy with both types of pairs at both rates.<br>Ph. D.

Let <i>K</i> be a compact subset of complex <i>N</i>-dimensional space, where <i>N</i> ≥ 1. Let <i>H</i>(<i>K</i>) denote the functions analytic in a neighborhood of <i>K</i>. Let <i>R</i>(<i>K</i>) denote the closure of <i>H</i>(<i>K</i>) in <i>C</i>(<i>K</i>). We study the problem: What is <i>R</i>(<i>K</i>)? The study of <i>R</i>(<i>K</i>) is contained in the field of rational approximation. In a set of lecture notes, T. Gamelin [6] has shown a certain operator to be essential to the study of rational approximation. We study properties of this operator. Now let <i>K</i> be a compact subset of real <i>N</i>-dimensional space, where <i>N</i> ≥ 2. Let harm<i>K</i> denote those functions harmonic in a neighborhood of <i>K</i>. Let <i>h</i>(<i>K</i>) denote the closure of harm<i>K</i> in <i>C</i>(<i>K</i>). We also study the problem: What is <i>h</i>(<i>K</i>)? The study of <i>h</i>(<i>K</i>) is contained in the field of harmonic approximation. As well as obtaining harmonic analogues to our results in rational approximation, we also produce a harmonic analogue to the operator studied in Gamelin's notes.<br>Ph. D.

The use of artificial means of nutrition and hydration for terminally ill patients is a controversial topic, involving medical, legal, social, and ethical issues. Often, the patient who is dying in the hospital and ceases to eat and drink receives tube feeding. In contrast, hospice patients are usually not given tube feeding, and emphasis is placed on palliative treatment. The purpose of the first project was to describe the dietary intake of twelve older adult cancer patients in home hospice care. The mean daily intakes of energy for males ranged from 657 to 2142 kcal per day, or from 28 to 93% of the recommended intake (RI). For females, the mean daily intakes of energy ranged from 358 to 1852 kcal per day or from 18 to 97% of the RI. Intakes for protein, carbohydrate, fat, and select vitamins and minerals were also highly variable. It was found that some patients survived for extended periods of time with very low intakes of food and fluids. Also, three patients who died during the study showed gradually declining intakes of food and fluids until death. In the second project, a structured interview was administered to 14 hospice patients and 18 family members to determine their knowledge, perceptions, attitudes, and wishes concerning tube feeding for seriously and terminally ill patients. Responses to the questions indicated that in general patients were less opposed to the use of aggressive means of nutrition support than were family members. Also, three of the patients, and only one family member indicated that they would want to receive tube feeding if they became unable to eat and drink by themselves. Both patients and family members mentioned circumstances related to patient autonomy and prognosis as reasons why it would be permissible to withhold tube feeding from a patient. The third project presents five case studies of hospice patients who died without receiving artificial nutrition or hydration. The patients' medical records were examined, and their nurses or family members were interviewed about their symptoms and conditions during the dying process. Results indicated that most of the patients experienced no anxiety or restlessness, no nausea or vomiting, and no additional pulmonary problems as death approached. In four patients, pain was either absent or under control. Although four patients stopped eating three to seven days before death, they did not appear to exhibit hunger or thirst during this time. All five patients were reported to have died peacefully. These case studies appear to support the position that terminal starvation and dehydration do not cause pain or discomfort to patients who die without tube feeding. In fact, such patients may experience relief from troublesome symptoms.<br>Ph. D.

<p>In order to ensure the successful demonstration that the Weather Message switching center Replacement (WMSCR) of the Federal Aviation Administration (FAA) can complete its primary mission of accepting and distributing various data formats in use today and those of future systems, including the expected message traffic, this study was initiated.</p> <p> This Test Data set Formulation will specify the various data formats, worst-case traffic load/size, and a distribution scenario for the WMSCR. From this Formulation, an actual Test Data Set can be constructed and used to test the WMSCR.</p> <p> A description of the WMSCR, its operational environment, current users, future users, various message formats and associated sizing requirements per interface are detailed within.</p><br>Master of Engineering