Benedetta

This is a film review of Benedetta (2021), directed by Paul Verhoeven

Learning (About) Outcomes: How the Focus on Assessment Can Help Overall Course Design

The demand for quantitative assessment by external agencies and internal administrators can leave post-secondary instructors confused about the nature and purpose of “learning outcomes” and fearful that the demand is simply part of the increasing corporatization of the university system. This need not be the case. Writing learning outcomes has a number of benefits for course design that go beyond program assessment. This article clarifies some key aspects of the push towards using “learning outcomes,” and introduces a tripartite nomenclature for distinguishing between course “outcomes,” “outputs,” and “objectives.” It then outlines a process for instructors to use these three categories to develop and design courses that meet institutional assessment demands while also improving overall teaching effectiveness.  L’évaluation quantitative que demandent les agences externes et les administrateurs internes peut confondre les instructeurs de niveau postsecondaires quant à la nature et à l’objectif des « résultats d’apprentissage », et leur faire craindre que cette demande ne fasse simplement partie de la privatisation croissante du système universitaire. Ce n’est pas forcément le cas. La création de résultats d’apprentissage présente de nombreux avantages sur le plan de la conception de cours, avantages qui vont au-delà de l’évaluation de programme. L’article clarifie quelques aspects principaux de la poussée vers l’utilisation de « résultats d’apprentissage » et présente une nomenclature tripartite pour faire la distinction entre les résultats de cours, le rendement et les objectifs. Il décrit ensuite un processus pour que les instructeurs emploient ces trois catégories afin de concevoir des cours qui répondent aux exigences en évaluation de l’institution, tout en améliorant l’efficacité de l’enseignement dans son ensemble

Symbolic Power and Religious Impotence in Paul Verhoeven\u27s Spetters

This article explores the religious symbolism in the Dutch film Spetters (1980), by controversial director Paul Verhoeven. An examination of the symbolic referents in the film, in particular the use of stereotypical male power symbols, shows how expectations of power dynamics are reversed in the lives of the main characters. The film\u27s embedded message, played out in Verhoeven\u27s later films, concerns the impotence of Christianity in the modern world. Questions concerning theodicy are not satisfactorily answered through traditional religious ideas. God, it seems, has abandoned the human race

Performance of the rebuilt SUERC single-stage accelerator mass spectrometer

The SUERC bipolar single-stage accelerator mass spectrometer (SSAMS) has been dismantled and rebuilt to accommodate an additional rotatable pre-accelerator electrostatic spherical analyser (ESA) and a second ion source injector. This is for the attachment of an experimental positive-ion electron cyclotron resonance (ECR) ion source in addition to a Cs-sputter source. The ESA significantly suppresses oxygen interference to radiocarbon detection, and remaining measurement interference is now thought to be from 13C injected as 13CH molecule scattering off the plates of a second original pre-detector ESA

Forest fire history in Amazonia inferred from intensive soil charcoal sampling and radiocarbon dating

This study was supported by funding from the UK Natural Environment Research Council (NERC, NE/N011570/1 and NE/R017980/1) and a radiocarbon dating allocation (allocation 2122.0818) from the NERC-funded NEIF Radiocarbon Laboratory.Fire has a historical role in tropical forests related to past climate and ancient land use spanning the Holocene; however, it is unclear from charcoal records how fire varied at different spatiotemporal scales and what sampling strategies are required to determine fire history and their effects. We evaluated fire variation in structurally intact, terra-firme Amazon forests, by intensive soil charcoal sampling from three replicate soil pits in sites in Guyana and northern and southern Peru. We used radiocarbon (14C) measurement to assess (1) locally, how the timing of fires represented in our sample varied across the surface of forest plots and with soil depth, (2) basin-wide, how the age of fires varies across climate and environmental gradients, and (3) how many samples are appropriate when applying the 14C approach to assess the date of last fire. Considering all 14C dates (n = 33), the most recent fires occurred at a similar time at each of the three sites (median ages: 728–851 cal years BP), indicating that in terms of fire disturbance at least, these forests could be considered old-growth. The number of unique fire events ranged from 1 to 4 per pit and from 4 to 6 per site. Based upon our sampling strategy, the N-Peru site—with the highest annual precipitation—had the most fire events. Median fire return intervals varied from 455 to 2,950 cal years BP among sites. Based on available dates, at least three samples (1 from the top of each of 3 pits) are required for the sampling to have a reasonable likelihood of capturing the most recent fire for forests with no history of a recent fire. The maximum fire return interval for two sites was shorter than the time since the last fire, suggesting that over the past ∼800 years these forests have undergone a longer fire-free period than the past 2,000–3,500 years. Our analysis from terra-firme forest soils helps to improve understanding of changes in fire regime, information necessary to evaluate post-fire legacies on modern vegetation and soil and to calibrate models to predict forest response to fire under climate change.Publisher PDFPeer reviewe

Influence of production variables and starting material on charcoal stable isotopic and molecular characteristics

We present a systematic study on the effect of starting species, gas composition, temperature, particle size and duration of heating upon the molecular and stable isotope composition of high density (mangrove) and low density (pine) wood. In both pine and mangrove, charcoal was depleted in o13C relative to the starting wood by up to 1.6% and 0.8%, respectively. This is attributed predominantly to the progressive loss of isotopically heavier polysaccharides, and kinetic effects of aromatization during heating. However, the pattern of o13C change was dependant upon both starting species and atmosphere, with different structural changes associated with charcoal production from each wood type elucidated by Solid-State o13C Nuclear Magnetic Resonance Spectroscopy. These are particularly evident at lower temperatures, where variation in the oxygen content of the production atmosphere results in differences in the thermal degradation of cellulose and lignin. It is concluded that production of charcoal from separate species in identical conditions, or from a single sample exposed to different production variables, can result in significantly different o13C of the resulting material, relative to the initial wood. These results have implications for the use of charcoal isotope composition to infer past environmental change

Another 6 years of radiocarbon secondary-standard AMS with two spectrometers

The Scottish Universities Environmental Research Centre (SUERC) has analysed >100,000 individual graphite preparations with two accelerator mass spectrometers. Analysis quality is maintained by a programme of secondary-standards measurement, and annual assessment of the resulting large dataset can provide insight into subtle effects. The same analyses that are used to derive external errors within individual batches of samples, or to monitor inter-batch variance, are also employed in aggregate to determine overall instrument and process performance. The recent 2021 findings are consistent with prior years’, including the apparent contradiction that secondary standard analysis can be both consistent and slightly discordant between the two instruments. However, individual sample radiocarbon measurement on both machines remains accurate and typically 3 ‰ precise

Communicating complex ecological models to non-scientist end users

Complex computer models are used to predict how ecological systems respond to changing environ- mental conditions or management actions. Communicating these complex models to non-scientists is challenging, but necessary, because decision-makers and other end users need to understand, accept, and use the models and their predictions. Despite the importance of communicating effectively with end users, there is little guidance available as to how this may be achieved. Here, we review the challenges typically encountered by modellers attempting to communicate complex models and their outputs to managers and other non-scientist end users. We discuss the implications of failing to communicate effec- tively in each case. We then suggest a general approach for communicating with non-scientist end users. We detail the specific elements to be communicated using the example of individual-based models, which are widely used in ecology. We demonstrate that despite their complexity, individual-based models have characteristics that can facilitate communication with non-scientists. The approach we propose is based on our experiences and methods used in other fields, but which until now have not been synthesised or made broadly available to ecologists. Our aim is to facilitate the process of communicating with end users of complex models and encourage more modellers to engage in it by providing a structured approach to the communication process. We argue that developing measures of the effectiveness of communication with end users will help increase the impact of complex models in ecology