Miracle-dz/UniFAR-FTUs huggingface dataset:
A Novel Identity-Based Signcryption Scheme in the Standard Model

Identity-based signcryption is a useful cryptographic primitive that provides both authentication and confidentiality for identity-based crypto systems. It is challenging to build a secure identity-based signcryption scheme that can be proven secure in a standard model. In this paper, we address the issue and propose a novel construction of identity-based signcryption which enjoys IND-CCA security and existential unforgeability without resorting to the random oracle model. Comparisons demonstrate that the new scheme achieves stronger security, better performance efficiency and shorter system parameters.
Economic and clinical impact of inpatient diabetic hypoglycemia.

OBJECTIVE To assess the clinical and economic impact of hypoglycemia that develops during hospitalization of patients with diabetes. METHODS In this retrospective cohort study, data from 70 hospitals were used to identify the first inpatient encounter for adult patients with diabetes. Patients were included if all blood glucose measurements were 70 mg/dL or higher during the first 24 hours and their primary discharge diagnosis was for a condition other than hypoglycemia. Those who developed laboratory evidence of hypoglycemia (blood glucose <70 mg/dL after 24 hours) were compared with patients whose blood glucose values were all 70 mg/dL or higher. An alternative definition of hypoglycemia (blood glucose <50 mg/dL after 24 hours) was also evaluated. We adjusted for potential confounders with multivariate models. RESULTS Hypoglycemia had an adverse effect on all outcomes among more than 100,000 diabetic patients. After adjustment, patients with diabetes who developed hypoglycemia had higher charges (38.9%), longer lengths of stay (3.0 days), higher mortality (odds ratio, 1.07; 95% confidence interval, 1.02-1.11), and higher odds of being discharged to a skilled nursing facility (odds ratio, 1.58; 95% confidence interval, 1.48-1.69) than diabetic patients without hypoglycemia (P<.01 for all). In all cases, using the lower threshold (<50 mg/dL) to define hypoglycemia resulted in similar findings with a larger magnitude of differences. CONCLUSIONS Although a direct causal relationship cannot be inferred, these study findings suggest the importance of carefully maintaining euglycemia during hospitalizations. Whether the observed worse outcomes were due to hypoglycemia itself or whether they were a marker of worse outcomes due to other causes requires further research.
Somatic embryogenesis: A valuable alternative for propagating selected robusta coffee (Coffea canephora) clones

SummaryThe behavior of four coffee (Coffea canephora cv. Robusta) clones was evaluated in this work to define the conditions that would allõw somatic embryogenesis to be induced at different seasons of the year. The objective was to have an adaptive methodology for in vitro propagation of these four coffee clones that were selected for their agronomic characteristics. The use of 2,4-dichlorophenoxyacetic acid and Picloram in the culture medium at concentrations between 2.07 and 4.14 μM resulted in high-frequency somatic embryogenesis when leaves were collected between April and June for genotype C-R, and between April and July for M-229. Callus from 28 to 35d of induction showed better results throughout the whole regeneration process, particularly in liquid medium. There was a clear difference in the behavior of the clones evaluated.
The toxicity/safety of processed free glutamic acid (MSG): a study in suppression of information.

Every company interested in promoting its product should attempt to convince its clients that its product is worth buying. However, ‘selective’ collection and reporting of research data would be inappropriate. ‘Selective’ collection and reporting of research data, including suppression of information contrary to that which is espoused by the industry in question, is the subject of this paper. Using promotion of the flavor‐enhancing ingredient called monosodium glutamate, and its active component (variously referred to as processed free glutamic acid or MSG) as a case study, this paper presents the case against the safety of MSG and looks at the work of the defenders of the safety of MSG. Areas covered include the structure of the industry organization, an overview of their research, suppression of information, dissemination of misinformation, dirty tricks, and the special role of agencies of the United States government.
More than Fit: Brand Extension Authenticity

This article introduces a new determinant of brand extension success, brand extension authenticity (BEA), as a complement to fit. The authors develop the BEA construct and a scale to measure it and then demonstrate that BEA captures consumer perceptions of brand extension legitimacy and cultural contiguity along four interrelated but distinct dimensions: maintaining brand standards and style, honoring brand heritage, preserving brand essence, and avoiding brand exploitation. They demonstrate the power of BEA in predicting consumer reactions to brand extensions, particularly among consumers with strong self–brand connections. Not only is BEA distinct from two conceptualizations of fit in brand extension literature—fit as similarity and fit as relevance—but it also moderates the effects of both fit dimensions on brand extension responses. By capturing a cultural and consumer relational perspective that shapes reactions to brand extensions, BEA provides an important, complementary construct for predicting brand extension success and enhancing brand value. Brand managers attentive to BEA may be able to stretch brands further than assessments of fit alone would suggest, but they risk failure in otherwise well-fitting extensions perceived as inauthentic.
Determinants of customer‐oriented behavior in a health care context

Purpose – Nurses in hospital settings are a primary contact point and the way their behaviors are perceived by patients is a critical determinant of overall patient satisfaction. The purpose of this paper is to empirically test and extend knowledge of the determinants of customer‐oriented behavior (COB) of contact personnel in a high‐contact service setting (healthcare industry). The paper contributes to the literature by examining two groups of constructs – dispositional variables (e.g. personality traits of the service provider) as well employee perceptions of service climate, mediated by surface traits and organizational commitment, on the dependent variable, COB of nurses in a hospital context.Design/methodology/approach – The study involved both qualitative (focus groups) and a large‐scale survey, with a final sample of 270 nurses from five hospitals in Thailand. The dependent variable was a self‐reported measure of COB. Tests for common method bias suggested however that this was not a problem. All .
The Role of the Media in Initial Public Offerings

We document that a simple count of news articles mentioning a company’s name during the filing period before an initial public offering (IPO) is significantly related to both the price revision and the initial return for that company’s stock. Conditioned on a positive offer price revision from the midpoint of the initial filing range, one extra piece of media coverage during the filing period for an IPO is associated with about two percentage points greater underpricing. The fact that price revisions during the offering period are significantly related to media coverage indicates that underwriters are aware of any information that media coverage either provides or proxies for. Yet media coverage is still significantly related to initial returns, but only when the price revision is positive. Thus it appears that underwriters fully adjust for media coverage when the offer price is revised downwards but only partially adjust when the offer price is revised upwards. We find that the positive relationship between media coverage and underpricing is stronger when ex ante uncertainty is greater, and fail to find any relationship between positive media coverage and IPO firms' long run under-performance. We argue that media attention - a consensus of media’s opinion on the stock - is a good proxy for investor demand. Our findings are thus consistent with information production theories of underpricing.
Bid-Ask Spreads and Inventory Risk: Evidence from the FTSE-100 Index Options Market

We apply panel data methods to a sample of quotes and trades for options and futures on the FTSE 100 stock index to determine to what extent inventory risk can rationalize the bid-ask spreads for index options. We compare hypothetical implied bid-ask spreads for synthetic index futures, constructed using the index options, to the actual spreads for index futures, and we find evidence that the bid-ask spreads for index options are economically large. We construct a panel of options by sorting options according to their strike prices and times to maturity; the approach maximizes the dispersion in the options’ marginal contributions to inventory risk. We estimate fixed effects regressions to determine to what extent inventory risk can rationalize the observed bid-ask spreads, allowing for fixed and variable order processing costs. We find that 42% of the variation (the within R2) in the average daily bid-ask spreads can be attributed to proxies for the differences in the options’ marginal contributions to inventory risk. But inventory risk alone cannot explain the observed bid-ask spreads; we reject the null that all fixed effects are equal to zero for both calls and puts. The fixed effects vary systematically with option characteristics; out-of-the-money and shorter time to maturity options have wider spreads and in-the-money and longer time to maturity options have narrower spreads than predicted by the estimated cost function for liquidity provision.
Informed Speculation About Trading Flows: Price Variability and Trading Volume

Many asset markets are composed of three types of participants: professional investors who possess superior skills or knowledge, uninformed private investors, and liquidity investors. In this paper, we analyze the properties of asset price and trading volume when professional investors are able to forecast future trading flows or the trading positions of liquidity traders. Private investors, on the other hand, can only observe the price and make their investment choices accordingly. In a rational expectations model based on Grossman and Stiglitz (1980), the interactions among these three types of investors lead to a set of clear comparative statics that match the results in the empirical asset pricing literature. There are also additional results that can be tested using asset market data.
Health Risks in Same-Sex Attracted Ugandan University Students: Evidence from Two Cross-Sectional Studies

Widespread discrimination across much of sub-Saharan Africa against persons with same-sex sexuality, including recent attempts in Uganda to extend criminal sanctions against same-sex behavior, are likely to have profound effects on this group’s health, health care access, and well-being. Yet knowledge of the prevalence of same-sex sexuality in this region is scarce. This study aimed to systematically examine prevalence of same-sex sexuality and related health risks in young Ugandan adults. We conducted two cross-sectional survey studies in south-western Uganda targeting student samples (n = 980, n = 1954) representing 80% and 72% of the entire undergraduate classes attending a university in 2005 and 2010, respectively. A questionnaire assessed items concerning same-sex sexuality (same-sex attraction/fantasies, same-sex sexual relations), mental health, substance use, experience of violence, risky sexual behavior, and sexual health counseling needs. Our findings showed that same-sex sexual attraction/fantasies and behavior were common among male and female students, with 10–25% reporting having sexual attraction/fantasies regarding persons of the same-sex, and 6–16% reporting same-sex sexual relations. Experiences of same-sex sexuality were associated with health risks, e.g. poor mental health (2010, AOR = 1.5; 95% CI: 1.0–2.3), sexual coercion (2010, AOR 2.9; CI: 1.9–4.6), and unmet sexual health counseling needs (2010, AOR 2.2; CI: 1.4–3.3). This first study of young adults in Uganda with same-sex sexuality found high levels of health needs but poor access to health care. Effective response is likely to require major shifts in current policy, efforts to reduce stigmatization, and reorientation of health services to better meet the needs of this vulnerable group of young people.
Mycobacterium tuberculosis as a cause of chronic periaortitis.

H. CHEVILLOTTE-MAILLARD, P. ORNETTI, R. MISTRIH, C. SIDOT, J. DUPUIS, J.-A. DELLAS, C. TAVERNIER, J. F. MAILLEFERT Department of Rheumatology, Dijon University Hospital, Dijon, Department of Medicine and Rheumatology, J. Bouveri Hospital, Montceau les Mines, Department of Rheumatology, Hôtel Dieu Hospital, Le Creusot, Department of Rheumatology, G. Ramon Hospital, Sens and INSERM/ERIT-M 0207, University of Burgundy, Dijon, France Accepted 5 January 2005 Correspondence to: J. F. Maillefert, Department of Rheumatology, Hôpital Général, 3 rue du Fb Raines, 21000 Dijon, France. E-mail: jean-francis.maillefert@chu-dijon.fr
Two furopyridine complexes of nickel(II) isothiocyanate.

Pyridine fused with a furan ring (fupy), and its dimethyl derivative, have been used for the first time as ligands to synthesize potentially new Werner clathrates. The extended aromatic system of pyridine-like ligands influences considerably the molecular structure of prepared nickel complexes. The molecular structure of tetrakis(furo[3,2-c]pyridine)bis(isothiocyanato)nickel(II) tetrahydrofuran (THF) solvate, [Ni(NCS)(2)(C(7)H(5)NO)(4)]. C(4)H(8)O or [Ni(NCS)(2)(fupy)(4)]. THF, (I), reveals a 'four-blade propeller' arrangement of ligands, with the angles between the fupy planes and the basal octahedron plane spanning the range 38.7-55.3 degrees. These angles are much larger (69.9-78.8 degrees ) in the centrosymmetric complex tetrakis(2,3-dimethylfuro[3,2-c]pyridine)bis(isothiocyanato)nickel(II) 6.6-hydrate, [Ni(NCS)(2)(C(9)H(9)NO)(4)]. 6.6H(2)O or [Ni(NCS)(2)(Me(2)fupy)(4)]. 6.6H(2)O, (II), in which crystallographically imposed inversion symmetry is present.
Child sexual abuse.

As a first principle, we should consider the needs of a religious, a priest or a pastoral worker, no different to those basic human and professional needs that all people have when they face the prospect of doing face to face work within what we call a pastoral setting. For psychologists, this field of practice is referred to as a clinical setting. For social workers, it is also a clinical or community setting. For teachers, it is a classroom setting. And for doctors, it is a clinical setting.
Can Mutual Fund Families Affect the Performance of Their Funds?

We examine whether accounting for mutual fund families can help explain the performance of their mutual funds, and if so, how they succeed to affect the performance of the funds they manage. We hypothesize that larger families not only have the incentive to selectively push some of their funds, but also the means to do so. When restricting our sample to funds that belong to larger families, a portfolio of funds that longs the portfolio of the previous year's best performing funds and shorts the previous year's worst performing funds has a positive monthly alpha of 58 basis points. We also show that there exists persistence of performance of these funds inside their respective families. This persistence is directly related to the number of funds in the family which we interpret as a measure of the latitude the family has in allocating resources unevenly between its funds. Lastly, we show that indeed the better performing funds in a family have a higher probability of getting more managers, which are one of the main resources available. This seems to imply that families do not always allocate resources proportionally according to the funds' needs but in a way that allows the family to promote certain funds.
Bicompartmental Versus Total Knee Arthroplasty for Medio-patellofemoral Osteoarthritis: A Comparison of Early Clinical and Functional Outcomes

Abstract Severe medio-patellofemoral osteoarthritis (MPFOA) is often managed with a total knee arthroplasty (TKA). Bicompartmental knee arthroplasty (BKA), as compared with TKA can offer a bone and ligament preserving solution for MPFOA. We aimed to compare the early clinical and functional outcomes of modular BKA (n = 16) with TKA (n = 20) in MPFOA. Knee Society Score (KSS-clinical and function scores) and Knee injury & Osteoarthritis Outcome Score (KOOS-pain, symptoms, stiffness, and function scores) were recorded at 6, 12 and 24 months postoperatively and compared between the two groups. Pre- and postoperative radiographs were evaluated for alignment and radiolucencies. We found that none of the outcome scores were significantly different (p ≥ 0.137) between the two groups at any point in time. Postoperative knee range of motion (ROM) was significantly greater in the BKA group at all points in time (p ≤ 0.007). None of the patients in either group were revised or pending revision at the end of 24 months. To conclude, modular BKA resulted in better knee ROM but similar clinical and functional scores than TKA in MPFOA at short term. Modular BKA is a viable option for MPFOA but may not necessarily result in significant superior functional outcomes than with TKA.
Computed tomography-guided vertebroplasty using a stereotactic guidance system (stereo-guide)

Received: 18 April 10 Accepted: 21 April 10 Published: 31 May 10 DOI: 10.4103/2152-7806.63904 Surg Neurol Int 2010, 1:10 This article is available from: http://www.surgicalneurologyint. com/content/1/1/10 Copyright: © 2010 Epstein NE. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The Contegra conduit: Late outcomes in right ventricular outflow tract reconstruction

Objectives: To report the clinical outcomes (early death, late death, and rate of reintervention) and performance of the Contegra conduit as a right ventricle outflow tract implant and to determine the risk factors for early reintervention. Methods: Forty-nine Contegra conduits were implanted between January 2002 and June 2009. Data collection was retrospective. The mean age and follow-up duration of Contegra recipients was 3.5 ± 4.6 years and 4.2 ± 2.0 years, respectively. Results: There were three deaths (two early, one late), giving a survival rate of 93.9%. The rate of conduit-related reintervention was 19.6% and was most often due to distal conduit stenosis. Age at implantation of <3 months, receipt of a conduit of 12–16 mm diameter, and a diagnosis of truncus arteriosus were each significant contributors to the rate of reintervention. Conclusion: The Contegra is a cost-effective and readily available solution. However, there is a limited range of larger calibers, which means that the homograft conduit (>22 mm) remains the first choice of implant in older children. The rates of reintervention are significantly higher with a diagnosis of truncus arteriosus, age at implantation of <3 months, and implantation of conduits sized 12–16 mm.
Wireless Sensor Networks with Energy Efficient Organization

A critical aspect of applications with wireless sensor networks is network lifetime. Battery-powered sensors are usable as long as they can communicate captured data to a processing node. Sensing and communications consume energy, therefore judicious power management and scheduling can effectively extend the operational time. One important class of wireless sensor applications of deployment of large number of sensors in an area for environmental monitoring. The data collected by the sensors is sent to a central node for processing. In this paper we propose an efficient method to achieve energy savings by organizing the sensor nodes into a maximum number of disjoint dominating sets (DDS) which are activated successively. Only the sensors from the active set are responsible for monitoring the target area and for disseminating the collected data. All other nodes are into a sleep mode, characterized by a low energy consumption. We define the maximum disjoint dominating sets problem and we design a heuristic that computes the sets. Theoretical analysis and performance evaluation results are presented to verify our approach.
Voluntary and involuntary job redundancy: Hope or helplessness?

Learned helplessness theory and legacy theory were used to predict differences in job-search activity, depression, and job attitudes between employees who experienced involuntarily job redundancy and those who volunteered for job redundancy. Two hundred and twenty-two redundant employees rated their job-search activity and depression upon initial unemployment and again three months later. Employees who had volunteered for job redundancy reported significantly higher job-search activity and lower depression. Over the three-month time period, involuntarily redundant people reported a drop in jobsearch activity and voluntarily redundant people reported an increase in depression. At the three-month re-test, fifty-four participants had regained employment and were asked to rate their levels of depression, job insecurity, and organizational commitment. While the involuntarily redundant group did not experience a significant change in depression upon re-employment, the voluntarily redundant group reported a sign.
The Word Shape Hypothesis Re-Examined: Evidence for an External Feature Advantage in Visual Word Recognition.

This study investigates the relative roles of internal and external letter features in word recognition. In Experiment 1 the efficacy of outer word fragments (words with all their horizontal internal features removed) was compared with inner word fragments (words with their outer features removed) as primes in a forward masking paradigm. These forward masked primes were followed by a word to be read aloud. Outer word primes presented for longer durations produced significantly faster naming responses than inner primes. Outer parts of words appear to provide more relevant information for lexical access at an earlier stage than inner fragments. In Experiment 2 words with only external features were named correctly on 96% of occasions compared with 52% of words with only their inner features presented. This indicates much greater information content in the periphery of a word (despite having a reduced area of print available: 45% compared to 55%). Multiple regression analyses controlling for ‘guessability’ (from data in Experiment 2) still produced significantly faster reaction times in the outer relative to the inner priming condition for longer prime durations. These experiments demonstrate that first, the most informative letter features are concentrated in the peripheral region of words; and second, even controlling for this effect, readers appear to have a bias towards analysing outer features of a word before inner features.
Electron microscopy of fine‐needle aspiration biopsies of the mediastinum

Twenty cases of fine‐needle aspiration (FNA) biopsy of mediastinal tumors with ultrastructural studies of the aspirated material were renewed. The cases were classified according to the cytologic and ultrastructural diagnosis. A specimen insufficient for ultrastructural study was obtained in five cases (25%). Refinement of the cytologic diagnosis was made in three cases (15%) and good correlation between the initial cytologic impression and the ultrastructural studies was seen in the remaining cases (60%). Comparison of different sites of FNA biopsy revealed a higher rate of ultrastructural examination in the cases involving the mediastinum. Illustrative cases of the use of electron microscopy in FNA biopsies of mediastinal tumors are presented. © 1992 Wiley‐Liss, Inc.