Does distance e‐learning work? A comparison between distance and face‐to‐face learners using e‐learning materials

This study compares continual assessment data, intake numbers, retention numbers and final examination grades of a mixed cohort of face‐to‐face and distance learners against similar data from previous years where e‐learning materials were not used in order to test whether e‐learning materials can support the same quality and quantity of teaching and learning for both face‐to‐face and distance learners. The results for this cohort of learners demonstrate that: (i) distance e‐learners score as well and sometimes better than face‐to‐face learners; (ii) face‐to‐face student numbers have increased; (iii) overall, student retention and student attendance have been maintained; (iv) final examination results have been maintained or in some cases improved; (v) lecturer workload was high, but not unmanageable, and it is clear how manageability can be improved

CORRECTING FOR SPATIAL EFFECTS IN LIMITED DEPENDENT VARIABLE REGRESSION: ASSESSING THE VALUE OF "AD-HOC" TECHNIQUES

A common test for spatial dependence in regression analysis with continuous dependent variables is the Moran's I. For limited dependent variable models, the standard definition of a residual breaks down because yi is qualitative. Efforts to correct for potential spatial effects in limited dependent variable models have relied on ad-hoc methods such as including a spatial lag variable or using a regular sample that omits neighboring observations. Kelejian and Prucha have recently developed a version of Moran's I for limited dependent variable models. We present the statistic in a more accessible way and use it to test the value of previously-used ad-hoc techniques with a specific data set. Keywords: Morans I, Spatial Autocorrelation, Limited Dependent Variable Models, Land-Use Change, Geographical Information Systems (GIS),Moran's I, Spatial Autocorrelation, Limited Dependent Variable Models, Land-Use Change, Geographical Information Systems (GIS), Research Methods/ Statistical Methods,

Assessing the Robustness of Predictions in Spatially Explicit Models of Land Use

We propose an information-theoretic approach to assess the performance of a discrete choice model used to analyze land use and land use change. We show that our disaggregated measure can be used to compare robustness of predictions across land use categories and across models. Furthermore, a proper reformulation of the problem shows that a disaggregated (observation by observation) log-likelihood lends itself to an information theoretic interpretation, which allows comparisons performance across models.Land Economics/Use,

Modeling Deforestation and Land Use Change: Sparse Data Environments

Land use change in developing countries is of great interest to policymakers and researchers from many backgrounds. Concerns about consequences of deforestation for global climate change and biodiversity have received the most publicity, but loss of wetlands, declining land productivity, and watershed management are also problems facing developing countries. In developing countries, analysis is especially constrained by lack of data. This paper reviews modeling approaches for data-constrained environments that involve methods such as neural nets and dynamic programming and research results that link individual household survey data with satellite images using geographic positioning systems.Land Economics/Use, Q15, Q23, R14,

Siege and Response: Families’ Everyday Lives and Experiences with Children’s Residential Mental Health Services (FULL REPORT)

Purpose Our purpose in interviewing parents with a child placed in residential mental health treatment was threefold: (1) to understand the functioning of children requiring residential mental health treatment before, during, and after treatment; (2) to characterize parents’ perceptions of their families’ involvement with residential treatment; and, (3) to address the popular notion that children requiring residential treatment come from highly dysfunctional and potentially harmful families by describing prevalent family functioning patterns. Methodology|This report is based on information obtained by interviewing 29 primary caregivers who had a child placed in residential care at one of two Ontario children’s mental health agencies. Parents were visited in their homes by an interviewer to engage in one-on-one dialogue to explore dimensions of their everyday lives and reflect on their service experiences. Interviews consisted of a series of open ended questions and were approximately 1 ½ to 2 hours in length. Because of the labour intensive nature of qualitative investigations, there are limitations to the number of cases that can practically be included in a study; however, what is lost in generalizability is compensated for by a richer sense of the struggles facing these families. Parents’ Perceptions of Residential Services Parents were generally pleased with their child’s placement in a residential treatment center. Parents feel respected, valued, and understood by service providers. They experience staff as competent, compassionate, and helpful. Residential services offered respite for families and containment for focal children. Many parents reported gains made for themselves and their children. Yet only 17% of parents felt that sufficient gains had been made to warrant the discharge of their child from the center. Parents tended not to blame the residential center for the lack of progress. The also seemed unable to articulate what the residential center could have done differently. Yet these parents, extremely hopeful when they first had their child placed in residence, had to come to terms with the realization that service outcomes had not matched their hopes. These stories highlight both the complexity and the tenacious nature of these children’s mental health difficulties. They also provide a challenge to service providers. What do we do when good is not good enough? Changes in Child Functioning Before, During and After Residential CareThese stories provide dramatic testimony that most of the older cohort children in this study leaving residential care had very serious ongoing problems in daily living. Problems which in many cases rivaled or exceeded the challenges faced prior to entering residential care. About one-third of these children had left home and many had unstable living arrangements or were “on the streets”. With the exception of living on their own and involvement in delinquent activities, and notwithstanding moderately more evidence of “successful” or partially “successful” adaptations, the after care daily living portraits of younger cohort residential care graduates were not notably more encouraging. About half of these younger children did not return to their original homes 6 after residential care. Serious areas of concern shared by both groups of children include continuing major adaptation problems at school and continued high levels of pressure on the parents and siblings of many of these children. Parent and Family FunctioningCaring for the focal child permeates every facet of daily life for these families including work, health, and relationships. Parents experience prolonged elevated levels of daily stress trying to juggle work schedules, appointments with professionals, household activities, and the needs of family members with caring for the focal child. Family climate is markedly tense and frequently involves conflict, particularly with the focal child. Relationships among other family members suffer as well, with parents reporting increased marital strain and little time to devote to siblings of the focal child. Caring for the focal child is taxing on parents’ own physical and mental health. Most families (70%) reported experiencing substantial relief, at least for a short period of time, from tensions within the home when the focal child entered residential care. Child Functioning Over Three Selected Developmental PeriodsOne of the interpretative challenges inherent in these stories is understanding the connection between the behaviour of these children, which is strikingly similar, and evidence suggestive of these children having a variety of problems, life histories and family environments. It can be argued that these children arrive at a similar point from many different trajectories. Who are the children represented in this sample? How are we to understand their difficulties? When it comes to understanding the behaviour of the focal children, both its presentation and its genesis, these stories raise as many questions as they answer. These stories challenge the notion of a single or root cause of extreme unmanageable behaviour. Instead they offer a complex and unsettling portrayal of these children, their familial and social environments, life histories, their strengths and challenges. These stories caution against the use of blanket or catch-all interpretations to help us understand the problematic behaviour of these children. ConclusionDespite the positive view of residential treatment held by parents long after treatment ends, the data suggest relatively poor outcome patterns for children leaving residential care. Serious areas of concern shared by both groups of children include continuing major adaptation problems at school and continued high levels of pressure on the parents and siblings of many of these children. The clearest area of benefit from these residential placements, at least in the short run, is for family members other than the focal child. This is an important consideration, given the incredible pressures families manage when the focal child is at home, and the extreme disruptions in family life described in these stories. An obvious question emanating from these stories is what can be expected for these children - in school, employment and relationships - over the years ahead. There is almost no support in our study for helping strategies predicated on “curing” or changing the focal child through short-term or medium-term interventions so that he or she can prosper in everyday life. Variations in living arrangements, enhancing school and employment opportunities, and continuing support to these children and their families with the challenges of daily living merit serious attention

Siege and Response: Families’ Everyday Lives and Experiences with Children’s Residential Mental Health Services (SUMMARY REPORT)

Our purpose in interviewing families who had a child placed in residential children’s mental health treatment was to provide insight into the lives and service experiences of these families as they struggle to care for their child and find appropriate services. As we endeavored to code, categorize, and make sense of the information shared with us by families several other more pointed purposes emerged as integral to our efforts. More specifically we became interested in understanding the functioning of children requiring residential mental health treatment before, during, and after treatment with the aim to comment on general patterns of change for these children across these three time periods. Secondly, we also aimed to characterize parents’ perceptions of their families’ involvement with residential treatment. In particular we address parents’ understanding of the services, their relationships with service providers, and parents’ perceptions of their children’s experiences. And thirdly, in order to provide a family context for children’s difficulties and the ensuing service involvement, we also discuss family functioning highlighting key family patterns under the domains of work, daily life, and relationships. The inclusion of prevalent family functioning patterns also helps us to address the popular notion that children requiring residential treatment come from highly dysfunctional and potentially 3 harmful families. Each of these three purposes are addressed in turn in an effort to provide a more complete picture of the families involved in residential treatment and their service experiences. We conclude with some implications for service delivery and thoughts to pursue in future investigations

Resonance polarization and phase-mismatched CARS of pheophytin b excited in the Qy band

Resonance polarization and phase-mismatched coherent anti-Stokes Raman scattering (CARS) measurements were performed on pheophytin b dissolved in acetone excited in the Qy absorption band, where strong broad fluorescence makes spontaneous Raman spectroscopy impossible. The phase-mismatching technique was applied to suppress solvent background and used in combination with the polarization-sensitive CARS technique to measure directly the x1111(3) and x1221(3) components to estimate depolarization ratios. The spectra were fitted by a non-linear least-squares procedure yielding vibrational band parameters. Some CARS dispersion information on the vibrational amplitudes was obtained by varying the pump wavelength. CARS excitation profiles based on transform theory were calculated and partly explain the observed amplitude dispersion. The application of the combined phase-mismatched polarization CARS technique may be useful in many other cases of highly fluorescing molecules when resonantly excited