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"Jansen, Jan"
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“A Sanctuary to Crime”? Enslaved Fugitives, Antislavery, and the Law in the Caribbean, 1819–1833
The article explores how the British Caribbean turned into an unlikely refuge for intercolonial escapees from slavery in the 1820s and 1830s. During this period, hundreds of enslaved men and women fled from French, Danish, and Dutch Caribbean colonies into British territories and entered in intense, and often contentious, encounters with low-ranking officials on the ground. The article examines how these individuals made use of legal ambiguities and loopholes in British slave trade abolition, thereby resetting, reinterpreting, and broadening the meaning and scope of freedom granted under it. The consequences of their actions were far-reaching and often uncontrollable, as they carved out a legal grey zone that created, in practice, a quasi-free-soil sanctuary in the heart of Britain’s planation complex. For more than a decade, local assemblies and officials, legal experts, British and foreign planters and their lobbies, foreign diplomats and British politicians grappled to close this grey zone. As it reincorporates enslaved fugitives in the history of state-sponsored antislavery, the article also shows how the case of these fugitives triggered a fierce debate about the essential parameters of imperial governance around 1800. This debate involved the renegotiation of the boundaries of freedom and slavery, and of subjecthood and (un)belonging. It gave rise to crucial questions related to imperial governance, including the scope of executive power and the challenge of coordinating imperial and colonial law as part of one coherent legal space. Because it involved other empires, the fugitives’ case also highlighted the connections between antislavery, sovereignty, and inter-state law.
Journal Article
Necessity as the mother of invention
We examine recent changes in monetary policy due to the financial crisis and ask whether they are likely to be temporary or permanent. We present evidence from two original surveys – one of central bank governors, the other of academic specialists. We find that central banks in crisis countries are more likely to have resorted to new policies, to have had discussions about changing mandates, and to have communicated more extensively. But thinking has changed more broadly. For instance, many central banks in non-crisis countries also report implementing macro-prudential measures. Looking forward, we expect central banks to have broader mandates, use macro-prudential tools more widely, and communicate more actively than before the crisis. While there is no consensus yet about the usefulness of unconventional monetary policies, we expect most of them will remain in central banks’ toolkits, as governors who gain experience with a particular tool are more likely to assess that tool positively. Finally, the relationship between central banks and their governments might well have changed, with central banks “crossing the line” into the political realm more often than in the past.
Journal Article
Steady-State Flow Through a Subsurface Reservoir with a Displaced Fault and its Poro-elastic Effects on Fault Stresses
We consider steady-state single-phase confined flow through a subsurface porous layer containing a displaced, fully conductive fault causing a sudden jump in the flow path, and we employ (semi-)analytical techniques to compute the corresponding pressures and fault stresses. In particular, we obtain a new solution for the pressure field with the aid of conformal mapping and a Schwarz–Christoffel transformation. Moreover, we use an existing technique to compute the poro-elastic stress field with the aid of inclusion theory. The additional resistance to fluid flow provided by a displaced fault, relative to the resistance in a layer without a fault, is a function of dip angle, fault throw divided by reservoir height, and reservoir width divided by reservoir height. Fluid flow has a larger effect on fault stresses in case of injection than in case of depletion, where injection with up-dip flow results in increased zones of fault slip near the bottom of the reservoir. Opposedly, injection with down-dip flow results in increased slip near the top of the reservoir. An order-of-magnitude estimate of the effect of steady-state flow across displaced faults in the Groningen natural gas reservoir shows that the effect on fault stresses is probably negligible. A similar estimate of the effect in low-enthalpy geothermal doublets indicates that steady-state flow may possibly play a small role, in particular close to the injector, but site-specific assessments will be necessary to quantify the effect.
Article Highlights
We present a semi-analytical method to compute the pressure and flow fields in reservoirs with a displaced fault.
In case of reservoir depletion, the effect of steady-state flow on the induced fault stresses is expected to be negligible.
In case of fluid injection, steady-state flow may significantly affect the induced fault stresses and the potential slip patches.
Journal Article
Central Bank Communication and Monetary Policy: A Survey of Theory and Evidence
Over the last two decades, communication has become an increasingly important aspect of monetary policy. These real-world developments have spawned a huge new scholarly literature on central bank communication—mostly empirical, and almost all of it written in this decade. We survey this ever-growing literature. The evidence suggests that communication can be an important and powerful part of the central bank's toolkit since it has the ability to move financial markets, to enhance the predictability of monetary policy decisions, and potentially to help achieve central banks' macroeconomic objectives. However, the large variation in communication strategies across central banks suggests that a consensus has yet to emerge on what constitutes an optimal communication strategy.
Journal Article
A Randomized, Placebo-Controlled Trial of Lubiprostone for Opioid-Induced Constipation in Chronic Noncancer Pain
This multicenter, phase 3 trial evaluated oral lubiprostone for constipation associated with non-methadone opioids in patients with chronic noncancer-related pain.
Adults with opioid-induced constipation (OIC; <3 spontaneous bowel movements [SBMs] per week) were randomized 1:1 to double-blind lubiprostone 24 μg or placebo twice daily for 12 weeks. The primary end point was the overall SBM response rate. Responders had at least moderate response (≥1 SBM improvement over baseline frequency) in all treatment weeks with available observed data, as well as full response (≥3 SBMs per week) for at least 9 of the 12 treatment weeks.
In total, 431 patients were randomized; 212 each received lubiprostone and placebo, and 7 were not treated. Overall, the SBM response rate was significantly higher for patients treated with lubiprostone vs. placebo (27.1 vs. 18.9%, respectively; P=0.030). Overall mean change from baseline in SBM frequency was significantly greater with lubiprostone vs. placebo (3.2 vs. 2.4, respectively; P=0.001). The median time to first SBM was significantly shorter with lubiprostone vs. placebo (23.5 vs. 37.7 h, respectively; P=0.004). Compared with placebo, the patients treated with lubiprostone exhibited significant improvements in straining (P=0.004), stool consistency (P<0.001), and constipation severity (P=0.010). No significant differences were observed in quality-of-life measures or the use of rescue medication; however, the percentage of patients who used rescue medication was consistently lower in the lubiprostone group than in the placebo group at months 1 (34.9 vs. 37.7%), 2 (23.4 vs. 26.6%), and 3 (20.5 vs. 22.0%). Adverse events (AEs) >5% were diarrhea, nausea, vomiting, and abdominal pain (lubiprostone: 11.3, 9.9, 4.2, and 7.1%, respectively; placebo, 3.8, 4.7, 5.2, and 0%, respectively). None of the serious AEs (lubiprostone, 3.3%; placebo, 2.8%) were related to lubiprostone.
Lubiprostone significantly improved symptoms of OIC and was well tolerated in patients with chronic noncancer pain.
Journal Article
The Pitch Rather Than the Pit: Investor Inattention, Trading Activity, and FIFA World Cup Matches
This paper analyzes stock market trading in 15 countries during the 2010 and 2014 soccer FIFA World Cups. We find evidence for substantial investor inattention during these major sporting events. The lack of attention for the trading pit is particularly large when the national soccer team is competing, with traded volumes declining by as much as 48%. During national team matches, prices on local stock markets can temporarily decouple from global financial market developments. These findings suggest that major sporting events can act as a laboratory in which to investigate investor inattention.
Journal Article
Surgeon perspectives on the STITCH trial: a mixed methods study
BackgroundIncisional hernia prevention strategies related to fascial closure technique during laparotomy are well described yet poorly implemented in practice. The factors hindering the surgeon’s adoption of evidence-based techniques for fascial closure are poorly understood and characterized.MethodsUsing an exploratory sequential mixed methods design, we first collected 139 responses to a validated quantitative survey based on a Theoretical Domain Framework for adoption of healthcare practices. Mean scores from survey responses were tabulated, and the findings were used to develop an interview guide for subsequent qualitative individual semi-structured phone interviews. Fourteen practicing surgeons were purposively sampled from social media outlets and our institution. The interviews were recorded and transcribed verbatim for coding and thematic analysis using NVivo 12 Plus. Data from the surveys and interviews were integrated using joint displays.ResultsQuantitative and qualitative analyses from surveys and semi-structured interviews revealed various themes related to surgeon decision-making related to fascial closure technique. Surgeons cited limitations of prior studies, applicability of findings, anecdotal experiences, and situation-specific environments that influence their decision-making. Peer influence and lack of training also affected surgeons’ perspectives on integrating small bite technique into practice.ConclusionTrial design limitations, peer influence, and patient-specific factors impacted surgeon decision-making in the choice of fascial closure technique. Future clinical trials in diverse patient populations may improve surgeons’ confidence in implementing technique for fascial closure.
Journal Article