Dynamic provisioning: rationale, functioning, and prudential treatment

Current policy debate has renewed interest in countercyclical provisioning policies; dynamic provisions are regarded as a valuable device for pursuing this goal. Last July, Ecofin supported “the introduction of forward-looking provisioning, which consists in constituting provisions deducted from profits in good times for expected losses on loan portfolios, and which would contribute to limiting procyclicalityâ€. This paper describes: i) how dynamic provisions work in a general framework based on expected losses; ii) how they work according to the Spanish system, which is the only real example of countercyclical provisioning; iii) the differences and similarities between the expected loss model and the Spanish approach. Building on proposals currently under discussion in the international community, it also suggests a possible way forward for introducing a system of dynamic provisions that, while meeting the prudential goal of having more conservative provisioning policies, would not clash with accounting standards.dynamic provisions, capital buffers, Basel 2, credit risk, procyclicality

Innocent strategies as presheaves and interactive equivalences for CCS

Seeking a general framework for reasoning about and comparing programming languages, we derive a new view of Milner's CCS. We construct a category E of plays, and a subcategory V of views. We argue that presheaves on V adequately represent innocent strategies, in the sense of game semantics. We then equip innocent strategies with a simple notion of interaction. This results in an interpretation of CCS. Based on this, we propose a notion of interactive equivalence for innocent strategies, which is close in spirit to Beffara's interpretation of testing equivalences in concurrency theory. In this framework we prove that the analogues of fair and must testing equivalences coincide, while they differ in the standard setting.Comment: In Proceedings ICE 2011, arXiv:1108.014

Cervical cancer screening in women vaccinated against human papillomavirus infection: Recommendations from a consensus conference

In Italy, the cohorts of women who were offered Human papillomavirus (HPV) vaccination in 2007/08 will reach the age (25 years) for cervical cancer (CC) screening from 2017. The simultaneous shift from cytology-based screening to HPV test-based screening gives the opportunity for unprecedented reorganisation of CC prevention. The ONS (National Screening Monitoring Centre) Directive and the GISCi (Italian Group for Cervical Screening) identified the consensus conference as the most suitable method for addressing this topic. A summary of consensus recommendations is reported here. The main objective was to define the best screening methods in girls vaccinated against HPV and the knowledge required for defining evidence-based screening strategies. A Jury made recommendations about questions and proposals formulated by a panel of experts representative of Italian scientific societies involved in CC prevention and based on systematic reviews of literature and evidence. The Jury considered changing the screening protocols for girls vaccinated in their twelfth year as appropriate. Tailored screening protocols based on vaccination status could be replaced by \u201cone size fits all\u201d protocols only when a herd immunity effect has been reached. Vaccinated women should start screening at age 30, instead of 25, with HPV test. Furthermore, there is a strong rationale for applying longer intervals for re-screening HPV negative women than the currently recommended 5 years, but research is needed to determine the optimal screening time points. For non-vaccinated women and for women vaccinated in their fifteenth year or later, the current protocol should be kept

Digital surface microscopy analysis of conjunctival pigmented lesions: A preliminary study

The objective of this study was to investigate whether digital surface microscopy (DSM) could be used for the follow-up and comparison of malignant and benign conjunctival pigmented lesions (CPLs). Thirty-nine CPLs [16 de novo malignant melanomas (MMs), one MM arising from primary acquired melanosis (PAM), six PAMs and 16 naevi] were digitally analysed and biopsied. All of the PAMs and 10 naevi, which had not been surgically excised, were followed up using DSM. Thirty parameters were evaluated grouped into four categories: geometry, colour, texture and islands of colour. None of the CPLs that were followed up, which comprised 10 naevocytic naevi and seven PAMs, showed any morphological change at DSM analysis, except for one PAM which developed an MM 1 year later. Of the geometric variables examined, the area, maximum diameter and minimum diameter showed significantly higher values in MMs compared with benign CPLs. With regard to the colour of CPLs, MMs were significantly darker and bluer than naevi. In the texture group, contrast was significantly higher in MMs. In the islands-of-colour group, the imbalance of blue-grey regions and the presence of dark areas were significantly higher in MMs. DSM greatly simplified the follow-up of CPLs, such as PAMs with atypia, by providing satisfactory quality images with high reproducibility; this technique is also easy to use and well accepted by patients. Moreover, this preliminary study allowed us to determine which objective variables could be important for distinguishing between benign CPLs and conjunctival MMs. \ua9 2004 Lippincott Williams & Wilkins

Meaning in life and demoralization: a mental-health reading perspective of suicidality in the time of COVID-19

Consequences on mental health have been reported in general population, vulnerable individuals, psychiatric patients, and healthcare professionals. It is urgently necessary to study mental health issues in order to set priorities for public health policies and implement effective interventions. Suicidality is one of the most extreme outcomes of a mental health crisis. It is currently too early to know what the effect of COVID-19 will be on suicidality. However, authoritative commentary papers alert that most of the factors precipitating suicide are, and probably will be for a long time, present at several individual existence levels. A number of prevention measures and research considerations have been drawn up. A point of the latter, recommended by the International COVID-10 Suicide Prevention Research Collaboration, states that "the COVID-19 suicide research response should be truly multidisciplinary. This will foster research that addresses the different aspects and layers of risk and resilience.It will also foster research that informs prevention efforts by taking a range of perspectives" (Niederkrotenthaler et al., 2020). In this light, we would like to propose a reading perspective of suicidality that takes into account Meaning in Life (MiL) and demoralization. Both of the constructs were studied in heterogeneous populations with extreme life situations having led to a fracture between a "before" and an "after", and play a role in affecting suicidality, respectively as resilience and risk factors. In clinical practice, during these unprecedent times, we wish that this more inclusive approach could: 1) contribute to prevention, by delineating more individualized suicidal risk profiles in persons conventionally non-considered at risk but here exposed to an extremely uncommon experience, 2) enrich supportive/psychotherapeutic interventions, by broadening the panel of means to some aspects constitutive of the existential condition of a person who is brutally confronted with something unexpected, incomprehensible and, in some ways, still unpredictable

Spitz nevus versus atypical Spitz tumor: Objective morphological differentiation by digital dermoscopy analysis

Spitzoid melanocytic skin lesions (MSL) include Spitz nevi (SN) and spitzoid melanomas (SM). A third rare subset was described, atypical spitz tumors (AST), that share overlapping histologic features of SN and SM. Being difficult to diagnose lesions, both with dermoscopy and histology, there is considerable uncertainty regarding their biological potential. We aimed to investigate if digital dermoscopy analysis (DDA) could select some significantly different features in 41 dermoscopic images including 19 SN and 21 AST. Stepwise logistic regression analysis was performed in order to verify if there were dermoscopic features able to discriminate between SN and AST. No significant dermoscopic criteria were found to distinguish AST from SN. This support the hypothesis that AST was should be considered not as a different entity but within the spectrum of AN lesions