Knowledge of Antarctic permafrost is mainly derived from the Antarctic Peninsula and Victoria Land. This study examines the 2019–2023 temperature and humidity conditions, distribution and development of polygonal terrain and the origin of ground ice in soils of the Untersee Oasis. In this region, the surface offset (MAAT ≅ MAGST) and the thermal offset (MAGST ≤ TTIT) reflect the lack of vegetation, absence of persistent snow and a dry soil above the ice table. The mean annual vapour pressure at the ground surface is approximately ~2× higher than in the air but is ~0.67× lower than at the ice table. The size of polygons appears to be in equilibrium with the ice-table depth, and numerical modelling suggests that the depth of the ice table is in turn in equilibrium with the ground surface temperature and humidity. The ground ice at the ice table probably originates from the partial evaporation of snowmelt that infiltrated the dry soil column. As such, the depth of the ice table in this region is set by the water vapour density gradient between the ground surface and the ice-bearing ground, but it is recharged periodically by evaporating snowmelt.

This paper describes the implementation of curricula for Liberia's first-ever psychiatry training programme in 2019 and the actions of the only two Liberian psychiatrists in the country at the time in developing and executing a first-year postgraduate psychiatry training programme (i.e. residency) with support from international collaborators. It explores cultural differences in training models among collaborators and strategies to synergise them best. It highlights the assessment of trainees’ (residents’) basic knowledge on entry into the programme and how it guided immediate and short-term priority teaching objectives, including integrated training in neuroscience and neurology. The paper describes the strengths and challenges of this approach as well as opportunities for continued growth.

While there is an increasing prevalence of dieting in the overall population, weight loss (WL) practices could be a risk factor for weight gain (WG) in normal-weight (NW) individuals. The aim of the present work was to systematically review all the studies implicating diet restriction and body weight (BW) evolution in NW people. The literature search was registered in PROSPERO (CRD42021281442) and was performed in three databases from April 2021 to June 2022 for articles involving healthy NW adults. From a total of 1487 records initially identified, eighteen were selected in the systematic review. Of the eight dieting interventional studies, only one found a higher BW after weight recovery, but 75 % of them highlighted metabolic adaptations in response to WL favouring weight regain and persisting during/after BW recovery. Eight of the ten observational studies showed a relationship between dieting and major later WG, while the meta-analysis of observational studies results indicated that ‘dieters’ have a higher BW than ‘non-dieters’. However, considering the high methodological heterogeneity and the publication bias of the studies, this result should be taken with caution. Moreover, the term ‘diet’ was poorly described, and we observed a large heterogeneity of the methods used to assess dieting status. Present results suggest that dieting could be a major risk factor for WG in the long term in NW individuals. There is, however, a real need for prospective randomised controlled studies, specifically assessing the relationship between WL induced by diet and subsequent weight in this population.

This paper addresses a question which is fundamental to the perceived legitimacy of the distribution of resources today: to what extent does unfairness in how assets came to be acquired in the past affect incomes and wealth now? To answer that question requires two things: first, a principle to determine what is, and what is not, a just acquisition of wealth or a just source of income; second, a means of using that principle to estimate what fraction of wealth and income is now unjust. I use a principle put forward by Robert Nozick to provide the first of these things and then use a model of wealth accumulation and economic growth to illustrate its implications for the scale of unfairness today. The greater is depreciation of assets, the higher are saving rates out of labour income and the less important is human capital the more transient are the effects of past economic injustices. I use data on the perceived unfairness of economic outcomes to see if there is any evidence that those features which the model implies should influence the durability of injustice help explain cross-country differences in attitudes towards unfairness.

This article assesses whether economic injustices that took place in the past still have significant implications for the material welfare of people many years later. That issue is central to the question of how fair is the distribution of wealth and income today. It is also relevant to issues of reparations for past wrongs. I find that in standard neoclassical models of economic growth the lingering effects of injustice from more than 70 years ago are generally small. But effects can last much longer once we allow for impacts of past injustices to be transmitted through human capital accumulation as well as physical capital.

This paper analyses the costs and benefits of lockdown policies in the face of COVID-19. What matters for people is the quality and length of lives and one should measure costs and benefits in terms of those things. That raises difficulties in measurement, particularly in valuing potential lives saved. We draw upon guidelines used in the UK for public health decisions, as well as other measures, which allow a comparison between health effects and other economic effects. We look at evidence on the effectiveness of past severe restrictions applied in European countries, focusing on the evidence from the UK. The paper considers policy options for the degree to which restrictions are eased. There is a need to normalise how we view COVID because its costs and risks are comparable to other health problems (such as cancer, heart problems, diabetes) where governments have made resource decisions for decades. The lockdown is a public health policy and we have valued its impact using the tools that guide health care decisions in the UK public health system. The evidence suggests that the costs of continuing severe restrictions in the UK are large relative to likely benefits so that a substantial easing in general restrictions in favour of more targeted measures is warranted.

This research demonstrates financial derivative trade of unprocessed materials, for the mining industry through legal smart contracts. Within the mining supply chain, a stock of mined resources can reside in a mineral stockpile for over twenty years without gaining financial interest and without undergoing the mineral extraction process to derive value from the asset. This research elaborates on a blockchain solution implemented to increase miners’ short-term cash flow for business operations through the issuance of derivative assets on mineral stockpiles which can be traded through legally binding smart contracts. The system is the first to enable mining companies’ access to the underlying asset’s value earlier in the production lifecycle through smart contract technology whilst providing hedge funds with access to new financial products for investment portfolios.

To examine the implications of seasonality for the construction of a single-year calibration curve we obtained separate dates on earlywood and latewood fractions of tree rings originating from England and dendrochronologically dated between AD 1352 and AD 1442. These demonstrated that an average difference of 26±15 yr exists between earlywood and latewood and that this difference can be as high as 33±19 yr during periods of high radiocarbon (14C) production. It is argued that this difference is due to both changes in atmospheric 14C and the incorporation of stored carbohydrates into earlywood. Based on this, it was possible to separate an atmospheric and physiological contribution to this difference. Our modeling indicates that storage can produce a difference of up to 10 years between earlywood and latewood. This suggests that full-year tree rings from deciduous trees may be less appropriate for the construction of a single-year calibration curve and that specific atmospheric events can be more easily detected by measuring only latewood.

Good education requires student experiences that deliver lessons about practice as well as theory and that encourage students to work for the public good—especially in the operation of democratic institutions (Dewey 1923; Dewy 1938). We report on an evaluation of the pedagogical value of a research project involving 23 colleges and universities across the country. Faculty trained and supervised students who observed polling places in the 2016 General Election. Our findings indicate that this was a valuable learning experience in both the short and long terms. Students found their experiences to be valuable and reported learning generally and specifically related to course material. Postelection, they also felt more knowledgeable about election science topics, voting behavior, and research methods. Students reported interest in participating in similar research in the future, would recommend other students to do so, and expressed interest in more learning and research about the topics central to their experience. Our results suggest that participants appreciated the importance of elections and their study. Collectively, the participating students are engaged and efficacious—essential qualities of citizens in a democracy.

Background: There is little data to inform the treatment of severe obsessive compulsive disorder (OCD) in an inpatient or residential setting. Aims: This paper aimed to: a) describe treatment outcomes at a residential unit over 11 years; b) investigate whether treatment was successful for a subset of severe treatment refractory residents; c) compare an intensive treatment programme to a “standard” treatment programme; and d) find predictors of self or early discharge from the unit. Method: We compared treatment outcomes for (i) a minimum 12-week treatment (hereafter “standard”) programme versus a 2-week intensive programme and (ii) for severe treatment refractory cases on the standard programme. We identified 472 residents with OCD admitted to the Anxiety Disorders Residential Unit at the Bethlem Royal Hospital between 2001 and 2012. Outcomes were measured with the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS), Obsessive Compulsive Inventory (OCI), Beck Anxiety Inventory (BAI) and Beck Depression Inventory (BDI) obtained throughout treatment and up to one year after discharge. Results: Although residents had very severe OCD on admission, sequential assessment with the Y-BOCS, OCI, BAI and BDI demonstrated that scores on all outcome measures significantly decreased from pre to posttreatment and were generally maintained at follow-up. There was no significant difference between those on the standard or the 2-week intensive programme. Sixty-nine per cent of residents with OCD made significant improvements, with at least a 25% reduction on the Y-BOCS. There were predictors of self or early discharge but none for outcome on the Y-BOCS. Conclusions: The data support the principle of stepped care for severe OCD.