Modelling intra-regional geographic mobility in a rural setting

Large-scale models are often used in the urban planning context to model the effects of, for instance, a change in land-use policies or transportation infrastructure. This class of models accounts for factors such as the spatial distribution of jobs and workers, commuting flows, housing markets, modal choice and so on. One criticism of such models is their complexity, computational demands and data requirements. In this paper, we develop a model which shares certain features with large-scale models, but which is appropriate for studying development at the intra-regional level in a rural setting. The rural setting means that not all of the traditional features of a large-scale model are relevant, and these can therefore be omitted. This allows us to create a simple model which still captures the most relevant effects of large-scale models.

Læringsaktiviteter og profesjonsorientering- et utviklingsarbeid i ny grunnskolelærerutdanning

Denne artikkelen har utgangspunkt i en studie knyttet til ulike arbeidsformer i faget pedagogikk og elevkunnskap i lærerutdanningen. Formålet med artikkelen er å drøfte hvordan studentaktive læringsformer kan gi ulike inntak til kunnskapsinnholdet i faget og bidra til profesjonsforståelse. Innledningsvis presenteres relevant forskning som belyser forhold mellom teori og praksis i profesjonsutdanninger. Deretter beskrives tre ulike arbeidsformer som studien har fokus på. Arbeidsformene gjennomføres i en klasse første studieår i den nye grunnskolelærerutdanningen for 5.–10. trinn. Studentenes erfaringer med arbeidsformene er dokumentert i vurderingslogger. I tillegg er det gjennomført dybdeintervju med et utvalg studenter. Analyse av data har utgangspunkt i Kvales fortolkings-kontekster: selvforståelse, kritisk (common sense) og teoretisk forståelse (Kvale, 2009)

The Effects of Higher and Lower CO2 Levels in the Atmosphere on the Photosynthetic Rates and Stomatal Conductance of Malosma laurina in The Santa Monica Mountains

We hypothesize that higher CO2 levels will lead to a change in photosynthetic performance in the Malosma laurina population of the Santa Monica Mountains. We used one Malosma laurina that is across the street from university’s theme tower. We chose this specific plant because it was in the sun and it was in a well irrigated area. We selected a plant that is in non-shaded areas at 12:00 pm and then dark adapt them for 20 minutes. We selected an adult plant that was between four and six feet tall. We took the measurements from the upper leaves of the plant. We measured the photosynthetic rates of the plant, which will be exposed to the unaltered CO2 levels of the natural environment in the Santa Monica Mountains. Then, we used the LICOR (Li- 6400) system to create create three separate environments that we will then impose on the same plant but using different leaves. These simulated environments will have CO2 levels of 280ppm (past atmospheric level of CO2 before the industrial revolution), 400ppm (current atmospheric level of CO2), and 800ppm (expected atmospheric level of CO2 by 2100)

#EndMaleGuardianship: women’s rights, social media and the Arab public sphere

This study examines the online communicative dynamics between women and men during the Saudi women’s rights campaign to end male guardianship, which unfolded on Twitter. We analysed 2.7 million tweets with the #EndMaleGuardianship hashtag over a 7-month period quantitatively and 150,245 of these qualitatively to examine the extent to which Twitter shapes and facilitates cross-gender communication, and how this helped engender new spaces for expression of dissent. Our study shows that Twitter provided shared online communicative spaces that had several characteristics commonly associated with public sphere(s). There is also evidence that using these alternatives spaces, women transcended to an extent the gender segregation that exists in traditional public discourses and spaces of Saudi society. The anonymity of Twitter offered women a safe place to deliberate their concerns about male guardianship. We suggest that these deliberations created a counterpublic sphere of sorts, which helped Saudi women legitimise the #EndMaleGuardianship campaign

A Case Study of Microphysical Structures and Hydrometeor Phase in Convection Using Radar Doppler Spectra at Darwin, Australia

To understand the microphysical processes that impact diabatic heating and cloud lifetimes in convection, we need to characterize the spatial distribution of supercooled liquid water. To address this observational challenge, vertically pointing active sensors at the Darwin Atmospheric Radiation Measurement (ARM) site are used to classify cloud phase within a deep convective cloud in a shallow to deep convection transitional case. The cloud cannot be fully observed by a lidar due to signal attenuation. Thus we develop an objective method for identifying hydrometeor classes, including mixed-phase conditions, using k-means clustering on parameters that describe the shape of the Doppler spectra from vertically pointing Ka band cloud radar. This approach shows that multiple, overlapping mixed-phase layers exist within the cloud, rather than a single region of supercooled liquid, indicating complexity to how ice growth and diabatic heating occurs in the vertical structure of the cloud

The Lyman Alpha Reference Sample: V. The impact of neutral ISM kinematics and geometry on Lyman Alpha escape

We present high-resolution far-UV spectroscopy of the 14 galaxies of the Lyman Alpha Reference Sample; a sample of strongly star-forming galaxies at low redshifts ($0.028 < z < 0.18$). We compare the derived properties to global properties derived from multi band imaging and 21 cm HI interferometry and single dish observations, as well as archival optical SDSS spectra. Besides the Lyman $\alpha$ line, the spectra contain a number of metal absorption features allowing us to probe the kinematics of the neutral ISM and evaluate the optical depth and and covering fraction of the neutral medium as a function of line-of-sight velocity. Furthermore, we show how this, in combination with precise determination of systemic velocity and good Ly$\alpha$ spectra, can be used to distinguish a model in which separate clumps together fully cover the background source, from the "picket fence" model named by Heckman et al. (2011). We find that no one single effect dominates in governing Ly$\alpha$ radiative transfer and escape. Ly$\alpha$ escape in our sample coincides with a maximum velocity-binned covering fraction of $\lesssim 0.9$ and bulk outflow velocities of $\gtrsim 50$ km s$^{-1}$, although a number of galaxies show these characteristics and yet little or no Ly$\alpha$ escape. We find that Ly$\alpha$ peak velocities, where available, are not consistent with a strong backscattered component, but rather with a simpler model of an intrinsic emission line overlaid by a blueshifted absorption profile from the outflowing wind. Finally, we find a strong anticorrelation between H$\alpha$ equivalent width and maximum velocity-binned covering factor, and propose a heuristic explanatory model.Comment: 28 pages, 19 figures, 5 table

Epidemiology of abdominal trauma: An age- and sex-adjusted incidence analysis with mortality patterns

Purpose Abdominal injuries may occur in up to one-third of all patients who suffer severe trauma, but little is known about epidemiological trends and characteristics in a Northern European setting. This study investigated injury demographics, and epidemiological trends in trauma patients admitted with abdominal injuries. Methods This was an observational cohort study of all consecutive patients admitted to Stavanger University Hospital (SUH) with a documented abdominal injury between January 2004 and December 2018. Injury demographics, age- and sex-adjusted incidence, and mortality patterns are analyzed across three time periods. Results Among 7202 admitted trauma patients, 449 (6.2%) suffered abdominal injuries. The median age was 31 years, and the age increased significantly over time (from a median of 25 years to a median of 38.5 years; p = 0.020). Patients with ASA 2 and 3 increased significantly over time. Men accounted for 70% (316/449). The injury mechanism was blunt in 91% (409/449). Transport-related accidents were the most frequent cause of injury in 57% (257/449). The median Injury Severity Score (ISS) was 21, and the median New Injury Severity Score (NISS) was 25. The annual adjusted incidence of all abdominal injuries was 7.2 per 100,000. Solid-organ injuries showed an annual adjusted incidence of 5.7 per 100,000. The most frequent organ injury was liver injury, found in 38% (169/449). Multiple abdominal injuries were recorded in 44% (197/449) and polytrauma in 51% (231/449) of the patients. Overall 30-day mortality was 12.5% (56/449) and 90-day mortality 13.6% (61/449). Conclusion The overall adjusted incidence rate of abdominal injuries remained stable. Age at presentation increased by over a decade, more often presenting with pre-existing comorbidities (ASA 2 and 3). The proportion of polytrauma patients was significantly reduced over time. Mortality rates were declining, although not statistically significant.publishedVersio

Movement and habitat selection of a large carnivore in response to human infrastructure differs by life stage

BackgroundThe movement extent of mammals is influenced by human-modified areas, which can affect population demographics. Understanding how human infrastructure influences movement at different life stages is important for wildlife management. This is true especially for large carnivores, due to their substantial space requirements and potential for conflict with humans.MethodsWe investigated human impact on movement and habitat selection by GPS-collared male brown bears (Ursus arctos) in two life stages (residents and dispersers) in central Sweden. We identified dispersers visually based on their GPS locations and used hidden Markov models to delineate dispersal events. We used integrated step selection analysis (iSSA) to infer movement and habitat selection at a local scale (availability defined by hourly relocations), and resource selection functions (RSFs) to infer habitat selection at a landscape scale (availability defined by the study area extent).ResultsMovement of residents on a local scale was facilitated by small forestry roads as they moved faster and selected areas closer to forestry roads, and they avoided areas closer to larger public roads and buildings on both scales. Dispersers were more ambivalent in their response to human infrastructure. Dispersers increased their speed closer to small forestry roads and larger public roads, did not exhibit selection for or against any road class, and avoided areas closer to buildings only at local scale. Dispersers did not select for any features on the landscape, which is likely explained by the novelty of the landscape or their naivety towards it.ConclusionOur results show that movement in male brown bears is life stage-dependent and indicate that connectivity maps derived from movement data of dispersing animals may provide more numerous and more realistic pathways than those derived from resident animal data alone. This suggests that data from dispersing animals provide more realistic models for reconnecting populations and maintaining connectivity than if data were derived from resident animals alone