Introduction: With increasing longevity the population of the world is becoming older and there are growing numbers of people over the age of 65 years. This has implications for services providing psychological treatment to older people as there is likely to be an increasing demand for evidenced-based treatments such as Cognitive Behaviour Therapy (CBT) in the coming years. There are, however, relatively few clinical psychologists specialising in working with older people and therefore additional ways of dealing with the growing demands are essential. Computerised Cognitive Behaviour Therapy (CCBT) offers one potential option and NICE recommends Beating the Blues (BTB) as the most clinically and cost-effective package for treating depression. However, no study to date has explored the use of BTB with older people. Objective: The objective of the study was to address this gap in the literature and had the following aims: 1) to explore the uptake rate of BTB with older people; 2) to explore the characteristics of older people opting to receive BTB; 3) to explore the drop-out rate from BTB with older people; and 4) to determine if BTB was effective in reducing symptoms of depression and anxiety in older people experiencing these difficulties. The findings were compared to previous research on BTB with younger adults. Methodology: A between-groups, repeated measures design (with assessment time as the repeated measure) was used. Participants were given a free choice of receiving BTB plus treatment as usual (BTB+TAU) or treatment as usual alone (TAU). Treatment as usual was provided by clinicians from older people community mental health teams (e.g. psychiatric nurses) and the only constraint that was placed in this was that no face-to-face psychological therapy from an accredited therapist could be provided. The participants opting to receive BTB also completed eight sessions of BTB on a weekly basis. All participants completed a range of outcome measures prior to commencing treatment (pre), after eight weeks (post) and after a further 4 weeks (one month follow-up). Results & Discussion: The results indicated that 56.9 per cent of the participants opted to receive BTB and they reported having significantly more experience and confidence using a computer than those who declined BTB. It was also found that 72.7 per cent of older people completed all eight sessions of BTB (27.3 per cent discontinuation rate). This was comparable to what has been found in previous studies of BTB with younger adults. A two (treatment group) x three (time) repeated measures ANOVA revealed that, in comparison to the TAU group, the BTB+TAU group showed statistically significant greater improvements on measures of depression and anxiety by the end of treatment. This was maintained at one month follow-up. Furthermore, in comparison to the TAU group the BTB had a higher percentage of participants who met criteria for clinically significant improvement by the end of treatment and at one-month follow-up. The results suggest that BTB is an acceptable and effective treatment for older people experiencing depression and anxiety and the implications of these findings are discussed.

The effect of pH on fiber and paper properties, during beating and sheet formation, was investigated for three different pulps. The pulps were pH adjusted to four different pH levels between 3 and 9. Isotropic laboratory sheet were made of both unbeaten and beaten pulps. The beaten neutral sulfite semi-chemical pulp and bleached softwood kraft pulp were affected by changes in pH; bleached softwood kraft pulp in a minor extent due to less fiber surface charges. Compared to the other pH levels, pH 3 showed a lower fiber surface charge, water retention value, tensile index, tensile stiffness index, compressive index and edge crush resistance index. SEM pictures showed a denser network at pH 9 than for pH 3. This was seen for both neutral sulphite semi-chemical and softwood kraft pulp. The unbeaten pulps and beaten bleached hardwood kraft pulp were not affected by changes in pH. SEM pictures showed no difference in the fiber network for bleached hardwood kraft pulp. A mill trial, with neutral sulphite semi-chemical pulp, at pH levels between pH 4.8 and pH 5.6 was completed. No significant difference was seen for any mechanical property.

Thesis (M.S.)--Rochester Institute of Technology, 19xx. / Includes bibliographical references.

Population pulsations are fluctuations in the population difference (of a two level system) due to the presence of two or more coherent waves interfering in the medium. In this work, we show that population pulsations generated by three waves, a central wave and two mode-locked sidebands, are responsible for both the multiwavelength and the single-wavelength instabilities of single-mode lasers containing homogeneously-broadened media. The role of the population pulsations in establishing these instabilities, however, diminish as the central mode is detuned away from the atomic resonance frequency. For homogeneously-broadened lasers, we find two regions of single-wavelength instability. The first is at line center, for which population pulsations are solely responsible, and the second is off line center where the unsaturated medium provides the required gain and anomalous dispersion. For the case of inhomogeneously-broadened lasers, we show that population pulsations significantly increase the instability range over that predicted by Casperson for single-mode bad-cavity lasers. Both the unidirectional ring and the standing-wave cavities are treated. The Fourier expansion technique, used in this work, for treating three-frequency operation in saturation spectroscopy is shown to be equivalent (in appropriate limits) to the linear stability analysis in laser theory and optical bistability. We also show, in single-sideband saturation spectroscopy, that for long interaction lengths propagation effects can significantly influence the absorption and dispersion coefficients of the medium. Finally, we show that under certain conditions the pronounced splittind effects of the population pulsations develop into regions of intense absorption.

Thesis. 1975. B.S.--Massachusetts Institute of Technology. Dept. of Physics. / Includes bibliographical references. / by Peter A. Schulz. / B.S.

Typescript (photocopy). / Digitized by Kansas Correctional Industries

Typescript (photocopy). / Digitized by Kansas Correctional Industries

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