400 research outputs found
I wonder...? The Presence and Implications of Curiosity as a Foundational Ingredient Across Couple and Family Therapy Models
Theoretical and anecdotal accounts highlight the power of curiosity within the therapeutic process of particular models of therapy, with specific influences noted in regard to forming, maintaining, and evolving intra- and interpersonal relationships. The mention of curiosity in the therapeutic process is not surprising given its profound and evidence-based influence on the promotion of relationships and influence on social-emotional health and well-being. What is surprising however, is the lack of comprehensive review and exploration into how exactly curiosity is being conceptually used within and across therapeutic models. Additionally, such a review is missing in terms of whether curiosity is model dependent or is perhaps an integral piece of the larger therapeutic common factorsâ movement. To address this aforementioned gap between curiosity and the therapeutic process, I (BTH) and my research team (T.B. and M.F.) reviewed 28 book length texts that encompassed seven different theoretical approaches to therapy. An explanatory sequential mixed methods design was utilized, wherein quantitative data showed that the included language of curiosity was used 773 times between the 28 included texts. These 773 data points were then analyzed through a deductive qualitative process based on the sensitizing constructs of the therapeutic pyramid. Throughout this analysis, curiosity was most commonly coded as being a skill/technique, with additional coding of the therapeutic alliance and a way of being. The therapeutic pyramid was efficacious in describing the various functions of curiosity. However, upon further review and analysis, the research team\u27s conceptualization of curiosity was refined to two primary themes: connection and challenge. It is within each of these two headings where the value of curiosity lies across therapeutic modalities, as curiosity independently or simultaneously served as a conceptual tool for promoting connection and relationships while also functioning as an agent of challenge, growth, and change
Iron Speciation in PM2.5 from Urban, Agriculture, and Mixed Environments in Colorado, USA
Atmospheric iron solubility varies depending on whether the particles are collected in rural or urban areas, with urban areas showing increased iron solubility. In this study, we investigate if the iron species present in different environments affects its ultimate solubility. Field data are presented from the Platte River Air Pollution and Photochemistry Experiment (PRAPPE), aimed at understanding the interactions between organic carbon and trace elements in atmospheric particulate matter (PM). 24-hr PM2.5 samples were collected during the summer and winter (2016â2017), at three different sites on the Eastern Colorado plains: an urban, agricultural, and a mixed site. Downtown Denver had an average total and water-soluble iron air concentration of 181.2 and 7.7 ng mâ3, respectively. Platteville, the mixed site, had an average of total iron of 76.1 ng mâ3, with average water-soluble iron concentration of 9.1 ng mâ3. Jackson State Park (rural/agricultural) had the lowest total iron average of 31.5 ng mâ3 and the lowest water-soluble iron average, 1.3 ng mâ3. The iron oxidation state and chemical speciation of 97 samples across all sites and seasons was probed by X-ray absorption near edge structure (XANES) spectroscopy. The most common iron phases observed were almandine (FeâAlâSiâOââ) (Denver 21%, Platteville 16%, Jackson 24%), magnetite (Fe3O4) (Denver 9%, Platteville 4%, Jackson 5%) and Fe (III)dextran (Denver 5%, Platteville 13%, Jackson 5%), a surrogate for Fe-organic complexes. Additionally, native iron [Fe(0)] was found in significant amounts at all sites. No correlation was observed between iron solubility and iron oxidation state or chemical speciation
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Steady state free radical budgets and ozone photochemistry during TOPSE
A steady state model, constrained by a number of measured quantities, was used to derive peroxy radical levels for the conditions of the Tropospheric Ozone Production about the Spring Equinox (TOPSE) campaign. The analysis is made using data collected aboard the NCAR/NSF C-130 aircraft from February through May 2000 at latitudes from 40° to 85°N, and at altitudes from the surface to 7.6 km. HO2 + RO2 radical concentrations were measured during the experiment, which are compared with model results over the domain of the study showing good agreement on the average. Average measurement/model ratios are 1.04 (Ï = 0.73) and 0.96 (Ï = 0.52) for the MLB and HLB, respectively. Budgets of total peroxy radical levels as well as of individual free radical members were constructed, which reveal interesting differences compared to studies at lower latitudes. The midlatitude part of the study region is a significant net source of ozone, while the high latitudes constitute a small net sink leading to the hypothesis that transport from the middle latitudes can explain the observed increase in ozone in the high latitudes. Radical reservoir species concentrations are modeled and compared with the observations. For most conditions, the model does a good job of reproducing the formaldehyde observations, but the peroxide observations are significantly less than steady state for this study. Photostationary state (PSS) derived total peroxy radical levels and NO/NO2ratios are compared with the measurements and the model; PSS-derived results are higher than observations or the steady state model at low NO concentrations
Ozone depletion events observed in the high latitude surface layer during the TOPSE aircraft program
During the Tropospheric Ozone Production about the Spring Equinox (TOPSE) aircraft program, ozone depletion events (ODEs) in the high latitude surface layer were investigated using lidar and in situ instruments. Flight legs of 100 km or longer distance were flown 32 times at 30 m altitude over a variety of regions north of 58° between early February and late May 2000. ODEs were found on each flight over the Arctic Ocean but their occurrence was rare at more southern latitudes. However, large area events with depletion to over 2 km altitude in one case were found as far south as Baffin Bay and Hudson Bay and as late as 22 May. There is good evidence that these more southern events did not form in situ but were the result of export of ozone-depleted air from the surface layer of the Arctic Ocean. Surprisingly, relatively intact transport of ODEs occurred over distances of 900â2000 km and in some cases over rough terrain. Accumulation of constituents in the frozen surface over the dark winter period cannot be a strong prerequisite of ozone depletion since latitudes south of the Arctic Ocean would also experience a long dark period. Some process unique to the Arctic Ocean surface or its coastal regions remains unidentified for the release of ozone-depleting halogens. There was no correspondence between coarse surface features such as solid ice/snow, open leads, or polynyas with the occurrence of or intensity of ozone depletion over the Arctic or subarctic regions. Depletion events also occurred in the absence of long-range transport of relatively fresh âpollutionâ within the high latitude surface layer, at least in spring 2000. Direct measurements of halogen radicals were not made. However, the flights do provide detailed information on the vertical structure of the surface layer and, during the constant 30 m altitude legs, measurements of a variety of constituents including hydroxyl and peroxy radicals. A summary of the behavior of these constituents is made. The measurements were consistent with a source of formaldehyde from the snow/ice surface. Median NOx in the surface layer was 15 pptv or less, suggesting that surface emissions were substantially converted to reservoir constituents by 30 m altitude and that ozone production rates were small (0.15â1.5 ppbv/d) at this altitude. Peroxyacetylnitrate (PAN) was by far the major constituent of NOy in the surface layer independent of the ozone mixing ratio
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Photochemical Aging of Atmospheric Particulate Matter in the Aqueous Phase
This study focused on the photoaging of atmospheric particulate matter smaller than 2.5 μm (PM2.5) in the aqueous phase. PM2.5 was collected during a winter, a spring, and a summer campaign in urban and rural settings in Colorado and extracted into water. The aqueous extracts were photoirradiated using simulated sunlight, and the production rate (r•OH) and the effects of hydroxyl radicals (•OH) were measured as well as the optical properties as a function of the photoaging of the extracts. r•OH was seen to have a strong seasonality with low mean values for the winter and spring extracts (4.8 and 14 fM s–1 mgC–1 L, respectively) and a higher mean value for the summer extracts (65.4 fM s–1 mgC–1 L). For the winter extracts, •OH was seen to mostly originate from nitrate photolysis while for the summer extracts, a correlation was seen between r•OH and iron concentration. The extent of photobleaching of the extracts was correlated with r•OH, and the correlation also indicated that non-•OH processes took place. Using the •OH measurements and singlet oxygen (1O2) measurements, the half-life of a selection of compounds was modeled in the atmospheric aqueous phase to be between 1.9 and 434 h.
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Steady state free radical budgets and ozone photochemistry during TOPSE
A steady state model, constrained by a number of measured quantities, was used to derive peroxy radical levels for the conditions of the Tropospheric Ozone Production about the Spring Equinox (TOPSE) campaign. The analysis is made using data collected aboard the NCAR/NSF Câ130 aircraft from February through May 2000 at latitudes from 40° to 85°N, and at altitudes from the surface to 7.6 km. HO2 + RO2 radical concentrations were measured during the experiment, which are compared with model results over the domain of the study showing good agreement on the average. Average measurement/model ratios are 1.04 (Ï = 0.73) and 0.96 (Ï = 0.52) for the MLB and HLB, respectively. Budgets of total peroxy radical levels as well as of individual free radical members were constructed, which reveal interesting differences compared to studies at lower latitudes. The midlatitude part of the study region is a significant net source of ozone, while the high latitudes constitute a small net sink leading to the hypothesis that transport from the middle latitudes can explain the observed increase in ozone in the high latitudes. Radical reservoir species concentrations are modeled and compared with the observations. For most conditions, the model does a good job of reproducing the formaldehyde observations, but the peroxide observations are significantly less than steady state for this study. Photostationary state (PSS) derived total peroxy radical levels and NO/NO2 ratios are compared with the measurements and the model; PSSâderived results are higher than observations or the steady state model at low NO concentrations
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Ozone, aerosol, potential vorticity, and trace gas trends observed at highâlatitudes over North America from February to May 2000
Ozone (O3) and aerosol scattering ratio profiles were obtained from airborne lidar measurements on thirtyâeight flights over seven deployments covering the latitudes of 40°â85°N between 4 February and 23 May 2000 as part of the Tropospheric Ozone Production about the Spring Equinox (TOPSE) field experiment. Each deployment started from Broomfield, Colorado, with bases in Churchill, Canada, and on most deployments, Thule Air Base, Greenland. Nadir and zenith lidar O3 measurements were combined with in situ O3 measurements to produce vertically continuous O3 profiles from near the surface to above the tropopause. Potential vorticity (PV) distributions along the flight track were obtained from several different meteorological analyses. Ozone, aerosol, and PV distributions were used together to identify the presence of pollution plumes and stratospheric intrusions. Ozone was found to increase in the middle free troposphere (4â6 km) at high latitudes (60°â85°N) by an average of 4.6 ppbv/mo (parts per billion by volume per month) from about 54 ppbv in early February to over 72 ppbv in midâMay. The average aerosol scattering ratios at 1064 nm in the same region increased rapidly at an average rate of 0.36/mo from about 0.38 to over 1.7. Ozone and aerosol scattering were highly correlated over the entire field experiment, and PV and beryllium (7Be) showed no significant positive trend over the same period. The primary cause of the observed O3 increase in the mid troposphere at high latitudes was determined to be the photochemical production of O3 in pollution plumes with less than 20% of the increase from stratosphericallyâderived O3
Rearrangement of Rural Cadastral Boundaries in the Darling Downs, Queensland
Historically, land boundaries on the Darling Downs were set out on cardinal lines forming squares and rectangles enclosing a given area. Little or no regard was given to the qualities of lands enclosed or the way in which the boundaries dissected the landscape. In recent times the implementation of optimum rural land use practices is seriously impeded by the inappropriate relationships of farm boundaries to the landform. For a variety of reasons the cadastral system has come to be regarded as fixed, with disincentives in place to dissuade landholders, local authorities, and farm planners from contempleting a rearrangement of boundaries. This paper summarises the concepts of "remembrement" and the accompanying poster paper examines three hypothetical property boundary rearrangements including a brief exploration of the many associated issues, impacts and potential longer term benefits
LIS Technology and the Process of Rural Reconstruction: AKCLIS Final Report
The concept of rearranging property boundaries in rural areas has been addressed in principle in previous work (Hannigan and webb 1992). This study sets out to incorporate LIS Technology as a key communication element in explaining the need for, and potential solutions offered by a rearrangement of boundaries. A pilot study area was selected and over it a computer based land information system assembled. This LIS was then used in group and individual discussions with the landholders, local authority and other interested parties. This report details the opportunities and constraints identified in collecting the data into a LIS and makes recommendations for improving the process. Recommendations are made about the need for change in the farming operations in the study area aand the need for progress towards a long-term sustainable system. Finally, comments are made about the distribution of land, and the prospect for a re-arrangement some time in the future
Final Report: Rearrangement of Property Boundaries to Facilitate Optimum Rural Land Use
The implementation of optimum farming practices is seriously impeded by inappropriate relationship of property boundaries to the landform. This project investigates the problems brought about by the conflict of farm boundaries with the natural landform. This project examines the many issues and impacts relating to a proposal of rearrangeing cadastral boundaries in a trial area in the Linthorpe Creek Catchement near Pittsworth, Darling Downs, Queensland, Australia
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