The international financial community blamed the Asian crisis of 1997-1998 on deep failures of domestic financial governance. To avoid similar crises in the future, this community adopted and ...promoted a set of international "best practice" standards of financial governance. The G7 asked specialized public and private sector bodies to set international standards, and tasked the International Monetary Fund and the World Bank with their global dissemination. Non-Western countries were thereby encouraged to emulate Western practices in banking and securities supervision, corporate governance, financial disclosure, and policy transparency.
InGoverning Finance, Andrew Walter explains why Indonesia, Malaysia, South Korea, and Thailand-key targets and test cases of this international standards project-were placed under intense pressure to transform their domestic financial governance. Walter finds that the depth of the economic crisis, and more enduring aspects of Asian capitalism, such as family ownership of firms, made substantive compliance with international standards very costly for the private sector and politically difficult for governments to achieve. In spite of international compliance pressure, the result was varying degrees of cosmetic or "mock" compliance. In a book containing lessons for any agency or country attempting to implement lasting change in financial governance, Walter emphasizes the limits of global regulatory convergence in the absence of support from domestic politicians, institutions, and firms.
Most women undergoing hysterectomy in the United States have their surgery performed by a low-volume gynecologic surgeon. Evidence supports that, when compared to patients operated on by high-volume ...surgeons, these women have worse outcomes including fewer minimally invasive procedures and increased rates of complications. The factors that promote low-volume surgeons and suggestions for how to change this are reviewed in this Viewpoint.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK, ZRSKP
The rotation of the polarization of light after passing a medium in a magnetic field, discovered by Faraday, is an optical analogue of the Hall effect, which combines sensitivity to the carrier type ...with access to a broad energy range. Up to now the thinnest structures showing the Faraday rotation were several-nanometre-thick two-dimensional electron gases. As the rotation angle is proportional to the distance travelled by the light, an intriguing issue is the scale of this effect in two-dimensional atomic crystals or films-the ultimately thin objects in condensed matter physics. Here we demonstrate that a single atomic layer of carbon-graphene-turns the polarization by several degrees in modest magnetic fields. Such a strong rotation is due to the resonances originating from the cyclotron effect in the classical regime and the inter-Landau-level transitions in the quantum regime. Combined with the possibility of ambipolar doping, this opens pathways to use graphene in fast tunable ultrathin infrared magneto-optical devices.
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Charge carriers in bilayer graphene are widely believed to be massive Dirac fermions that have a bandgap tunable by a transverse electric field. However, a full transport gap, despite its importance ...for device applications, has not been clearly observed in gated bilayer graphene, a long-standing puzzle. Moreover, the low-energy electronic structure of bilayer graphene is widely held to be unstable towards symmetry breaking either by structural distortions, such as twist, strain, or electronic interactions that can lead to various ground states. Which effect dominates the physics at low energies is hotly debated. Here we show both by direct band-structure measurements and by calculations that a native imperfection of bilayer graphene, a distribution of twists whose size is as small as ~0.1°, is sufficient to generate a completely new electronic spectrum consisting of massive and massless Dirac fermions. The massless spectrum is robust against strong electric fields, and has a unusual topology in momentum space consisting of closed arcs having an exotic chiral pseudospin texture, which can be tuned by varying the charge density. The discovery of this unusual Dirac spectrum not only complements the framework of massive Dirac fermions, widely relevant to charge transport in bilayer graphene, but also supports the possibility of valley Hall transport.
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The United States and China are the two most important states in the international system and are crucial to the evolution of global order. Both recognize each other as vital players in a range of ...issues of global significance, including the use of force, macroeconomic policy, nonproliferation of nuclear weapons, climate change and financial regulation. In this book, Rosemary Foot and Andrew Walter, both experts in the fields of international relations and the East Asian region, explore the relationship of the two countries to these global order issues since 1945. They ask whether the behaviour of each country is consistent with global order norms, and which domestic and international factors shape this behaviour. They investigate how the bilateral relationship of the United States and China influences the stances that each country takes. This is a sophisticated analysis that adroitly engages the historical, theoretical and policy literature.
To identify the optimal hysterectomy approach for large uteri in gynecologic surgery for benign indications from a perioperative morbidity standpoint.
PubMed and Embase databases were searched from ...inception through September 19, 2022. Meta-analyses were conducted as feasible.
This review included studies that compared routes of hysterectomy with or without bilateral salpingo-oophorectomy for large uteri (12 weeks or more or 250 g or more) and excluded studies with any concurrent surgery for pelvic organ prolapse, incontinence, gynecologic malignancy, or any obstetric indication for hysterectomy.
The review included 25 studies comprising nine randomized trials, two prospective, and 14 retrospective nonrandomized comparative studies. Studies were at high risk of bias. There was lower operative time for total vaginal hysterectomy compared with laparoscopically assisted vaginal hysterectomy (LAVH) (mean difference 39 minutes, 95% CI, 18-60) and total vaginal hysterectomy compared with total laparoscopic hysterectomy (mean difference 50 minutes, 95% CI, 29-70). Total laparoscopic hysterectomy was associated with much greater risk of ureteral injury compared with total vaginal hysterectomy (odds ratio 7.54, 95% CI, 2.52-22.58). There were no significant differences in bowel injury rates between groups. There were no differences in length of stay among the laparoscopic approaches. For LAVH compared with total vaginal hysterectomy, randomized controlled trials favored total vaginal hysterectomy for length of stay. When rates of blood transfusion were compared between these abdominal hysterectomy and robotic-assisted total hysterectomy routes, abdominal hysterectomy was associated with a sixfold greater risk of transfusion than robotic-assisted total hysterectomy (6.31, 95% CI, 1.07-37.32). Similarly, single studies comparing robotic-assisted total hysterectomy with LAVH, total laparoscopic hysterectomy, or total vaginal hysterectomy all favored robotic-assisted total hysterectomy for reduced blood loss.
Minimally invasive routes are safe and effective and have few complications. Minimally invasive approach (vaginal, laparoscopic, or robotic) results in lower blood loss and shorter length of stay, whereas the abdominal route has a shorter operative time.
PROSPERO, CRD42021233300.
We elucidate how graphene bilayers form on Ir(111). Low-energy electron diffraction (LEED) reveals that the two graphene layers are not always rotationally aligned. Monitoring this misalignment ...during growth shows that second-layer islands nucleate between the existing layer and the substrate. This mechanism occurs both when C segregates from the Ir and when elemental C is deposited from above. Low-energy electron microscopy (LEEM) and angle-resolved photoemission spectroscopy (ARPES) show that second-layer nucleation occurs preferentially under the first-layer rotational variants that are more weakly bound to the substrate. New-layer nucleation tends to occur inhomogeneously at substrate defects. Thus new-layer nucleation should be rapid on substrates that weakly bind graphene, making growth unstable toward mound formation initiated at substrate defects. In contrast, stronger binding permits layer-by-layer growth, as for Ru(0001). ARPES shows that bilayer graphene has two slightly p-doped π-bands. The work function of bilayer graphene is dominated by the orientation of the bottom layer.
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