Re-branding the leper colony: Challenges of changing culture and managing difficult people: Working paper series--09-10

Anika, a new manager, is confronted by a dysfunctional organizational culture characterized by employee disrespect, insubordination, and low performance. Her charge is to "to turn the place around". The case takes place in a service organization, a testing range run by the US Department of Defense. The staff is a combination of federal and contract employees who test clients' high-tech systems in a sometimes dangerous, desert environment. In addition, there are three vignettes that give a portrait of dysfunctional individual behaviors. Frequently, the response students want to make is "I'd just fire the guy." Unfortunately, it is not so simple

Towards Engaging Students in Curriculum Transformation: What are the Effective Characteristics of Rubrics?

Rubrics are tools commonly used by educators to accurately and consistently mark student assessments and communicate achieved learning outcomes. The teachers, having a clear understanding of the assessment\u27s intended learning outcomes, have traditionally constructed rubrics; however, an enhanced shared understanding of an assessment’s outcomes has the potential to be achieved if rubrics are developed as a collaboration between staff and students. Such practices provide potential for assessment, and its subsequent feedback, to be more highly valued by students not simply as an end-point, but rather as an opportunity for them to be active in their own learning, this becoming a curriculum transformation. This paper reports on the first phase of a project, funded by an Office for Learning and Teaching (OLT) Innovation and Discovery Grant: Owning the rubric: Student engagement in rubric design, use and moderation. Phase 1 of the project involved the identification of Effective Rubric Characteristics (ERCs) through a literature-evidenced approach that subsequently informed the formation of an Effective Rubrics Characteristics Questionnaire (ERCQ). The ERCQ was piloted with a small group of experienced users and then it was administered to a group of assessment and rubric experts to establish the key attributes of effective rubrics using a modified Delphi technique

TASER International, Inc. - Grappling with growth: Working paper series--05-01

TASER International, Inc. is one of the world's leading less-lethal weapons manufacturers and distributors. The case begins with a dramatic moment, as the brothers who run the company become aware of a highly critical article in Barron's which questions the legitimacy of their high stock price and casts doubt on their continued ability to grow. The case presents the company's counterarguments to the critical Barron's article. (Note that both the Barron's article in its entirety and the response document from the company's website are included with the case as appendices.) Students are shown TASER's powerful and effective marketing strategy to police and military, and then asked to consider whether and how to approach the potentially huge, lucrative consumer market. The case resulted from lengthy in-person, email, and phone interviews with TASER's President, Tom Smith. In addition, the company and its products have been well publicized in the national business press and in the local newspapers. Further, product details and other information on TASERs and other less-lethal weapons have been published in numerous police and military sources. Finally, TASER International's website has been a rich source of supplemental information to support the writing of the case

Interfacial colloidal assembly guided by optical tweezers and tuned via surface charge

Hypothesis: The size, shape and dynamics of assemblies of colloidal particles optically-trapped at an air–water interface can be tuned by controlling the optical potential, particle concentration, surface charge density and wettability of the particles and the surface tension of the solution. Experiments: The assembly dynamics of different colloidal particle types (silica, polystyrene and carboxyl coated polystyrene particles) at an air–water interface in an optical potential were systematically explored allowing the effect of surface charge on assembly dynamics to be investigated. Additionally, the pH of the solutions were varied in order to modulate surface charge in a controllable fashion. The effect of surface tension on these assemblies was also explored by reducing the surface tension of the supporting solution by mixing ethanol with water. Findings: Silica, polystyrene and carboxyl coated polystyrene particles showed distinct assembly behaviours at the air–water interface that could be rationalised taking into account changes in surface charge (which in addition to being different between the particles could be modified systematically by changing the solution pH). Additionally, this is the first report showing that wettability of the colloidal particles and the surface tension of the solution are critical in determining the resulting assembly at the solution surface. © 2022 The Author(s

Development of the Carers’ Alert Thermometer (CAT) to identify family carers struggling with caring for someone dying at home: a mixed method consensus study

Background: There is an increasing international policy direction to promote home death for dying patients which will impact on the demands placed on family carers. The early identification of carer needs and appropriate intervention can help avoid crisis situations for the carer and avoidable hospital admissions which are reported to be a global concern. The aim of the study was to explore what professionals and carers of patients with cancer and advanced progressive illness, in their last year of life, find burdensome and to develop an alert system for use by non-specialist staff. Methods: A mixed-method, multi-phased, consensus study sequentially utilising qualitative and quantitative data to develop and pilot the Carers’ Alert Thermometer (CAT). 245 people (117 carers and 128 professionals) participated in the study across a range of health and social care settings in the North West of England (2011–2014). Results: A number of key domains were identified and prioritised by consensus for inclusion in the CAT. The 8 domains fit within two overarching themes of the reported carer experience; the support needed by the carer to provide care and the support needed for the carer’s own health and well-being. The resultant CAT is an evidence-based alert thermometer consisting of 10 questions, guidance on the possible actions for each alert and space for an action plan to be jointly agreed by the assessor and carer. Preliminary piloting of the CAT has shown it to be valued, fit for purpose and it can be administered by a range of personnel. Conclusions: The CAT enables the identification of current and potential future needs so a proactive approach can be taken to supporting the carer as their role develops over time, with a view to enhancing their well-being and preventing avoidable hospital admissions; ultimately supporting patient choice to remain in their own home

Investigation of the distribution of transuranic radionuclides in marine sediment at the Montebello Islands, Western Australia

Three nuclear weapons tests were conducted in the 1950s at the Montebello Islands, Western Australia. The detonations were of different yields and configurations (two tower tests, one ship test), and led to substantial radionuclide contamination within the surrounding terrestrial and marine ecosystems. The region possesses great ecological and recreational significance, particularly within the marine environment. However, studies conducted so far have largely neglected the marine ecosystem which makes up the majority of the Montebello Island Marine Park and in which most test fallout would have deposited. Here we investigated the distribution of the transuranic radionuclides 238Pu, 239,240Pu and 241Am in marine sediment from the Montebello Islands. Marine sediment samples near Operation Mosaic G2 and Operation Hurricane were collected and analysed by gamma and alpha spectrometry. Activity concentrations of 239,240Pu across both series ranged from 45 to 2900 Bq kg−1, while 241Am levels ranged from 2.8 to 70 Bq kg−1. Higher activity concentrations were observed in sediment near the land-based, higher yield Mosaic G2 test, compared with the ship-based, lower yield Hurricane test. Sediment samples located closer to the detonation site were also observed to have higher activity concentrations. Radioactive particles of 0.94 mm and 1.5 mm in diameter were identified by analysis of size-fractioned sediment via investigation of 152Eu levels, photostimulated autoradiography and point gamma spectroscopy. Particles were confirmed to have transuranic radionuclide interiors, with surface coatings which were dominated by vitrified CaCO3. Their long-term resistance to weathering and subsequent persistence in the marine environment can therefore be attributed to their coated structural form. Our study confirms the persistence of transuranic radionuclides in Montebello Island marine sediment and highlights the need for additional studies to improve our understanding of the nuclear legacy in this region

The role of low-level image features in the affective categorization of rapidly presented scenes

It remains unclear how the visual system is able to extract affective content from complex scenes even with extremely brief (\u3c 100 millisecond) exposures. One possibility, suggested by findings in machine vision, is that low-level features such as unlocalized, two-dimensional (2-D) Fourier spectra can be diagnostic of scene content. To determine whether Fourier image amplitude carries any information about the affective quality of scenes, we first validated the existence of image category differences through a support vector machine (SVM) model that was able to discriminate our intact aversive and neutral images with ~ 70% accuracy using amplitude-only features as inputs. This model allowed us to confirm that scenes belonging to different affective categories could be mathematically distinguished on the basis of amplitude spectra alone. The next question is whether these same features are also exploited by the human visual system. Subsequently, we tested observers’ rapid classification of affective and neutral naturalistic scenes, presented briefly (~33.3 ms) and backward masked with synthetic textures. We tested categorization accuracy across three distinct experimental conditions, using: (i) original images, (ii) images having their amplitude spectra swapped within a single affective image category (e.g., an aversive image whose amplitude spectrum has been swapped with another aversive image) or (iii) images having their amplitude spectra swapped between affective categories (e.g., an aversive image containing the amplitude spectrum of a neutral image). Despite its discriminative potential, the human visual system does not seem to use Fourier amplitude differences as the chief strategy for affectively categorizing scenes at a glance. The contribution of image amplitude to affective categorization is largely dependent on interactions with the phase spectrum, although it is impossible to completely rule out a residual role for unlocalized 2-D amplitude measures

Using Ethnographic Discourse Analysis to Understand Doctor-Patient Interactions in Clinical Settings

Using ethnographic discourse analysis in an Emergency Department in Hong Kong, this study explored the features of doctor-patient interactions in a hospital setting. By audio-recording 10 patient journeys, from triage to disposition, we analyzed the complexity of turn-taking patterns in spoken interactions between patients and doctors, as well as the subsequent complexities in this communication process. In particular, we traced the flow of communication surrounding the patients’ medical conditions at different stages of their journeys (e.g., taking patient history, making diagnosis and translating medical information in a bilingual environment). Communication in this Emergency Department, as in all Emergency Departments in Hong Kong, involves repeated translation from spoken Cantonese interactions to the written English patient notes and vice versa. For this study, the ethnographic discourse analysi