Miracle-dz/UniFAR-FTUs huggingface dataset:
Semi-supervised learning for graph to signal mapping: A graph signal wiener filter interpretation

In this contribution, we investigate a graph to signal mapping with the objective of analysing intricate structural properties of graphs with tools borrowed from signal processing. We successfully use a graph-based semi-supervised learning approach to map nodes of a graph to signal amplitudes such that the resulting time series is smooth and the procedure efficient and scalable. Theoretical analysis of this method reveals that it essentially amounts to a linear graph-shift-invariant filter with the a priori knowledge put into the training set as input. Further analysis shows that we can interpret this filter as a Wiener filter on graphs. We finally build upon this interpretation to improve our results.
Aflatoxin M1 in the urine of non-carriers and chronic carriers of hepatitis B virus in Maringa, Brazil

A exposicao as aflatoxinas (AFs) na dieta e um fator de risco para o desenvolvimento do carcinoma hepatocelular (CHC) e a exacerbacao da hepatite aguda em individuos portadores do virus da hepatite B (VHB). O uso de biomarcadores, como a aflatoxina M1 (AFM1) na urina, produto de biotransformacao da aflatoxina B1 (AFB1), permite avaliar se a populacao esta exposta as AFs. O objetivo do presente estudo foi investigar ocorrencia de AFM1 na urina de portadores e nao portadores cronicos do VHB. Foi selecionado um grupo, de forma aleatoria, representado por 43 portadores do VHB atendidos em dois hospitais da cidade de Maringa, Brasil, no periodo de Marco a Junho/2008. O grupo controle foi composto por 29 voluntarios adultos saudaveis anti-HBs positivo e HBsAg negativo. A determinacao de AFM1 foi realizada por meio de deteccao por fluorescencia em sistema de cromatografia a liquido de alta eficiencia com derivacao pos-coluna utilizando Kobra Cell®. Das 72 amostras analisadas, 05/29 (17,2%) foram positivas para AFM1 em individuos nao portadores do VHB, e 16/43 (37,2%) de pacientes portadores do VHB. Este estudo demonstrou a ocorrencia de AFM1 na urina dos dois grupos estudados. Entretanto, ha evidencias de que os portadores do VHB possuam alto risco no desenvolvimento do CHC devido ao efeito aditivo pela interacao entre aflatoxinas e VHB.
‘My school has been quite pushy about the Oxbridge thing’: voice and choice of higher education

Whilst government policies are now pushing teachers to listen to pupils, this concern is largely framed within the school improvement agenda. This is not the only arena where listening to pupils counts. This article examines the ways in which two young people, making a significant choice about which university to attend, felt unable to discuss their interests and concerns with their teachers. In one case, this resulted in a young woman doing less well in her examinations in order to avoid getting her first preference of Oxbridge, and securing her ‘real choice’ at another Russell Group university. The other was not invited by his school to apply to Oxbridge, despite a desire to go there which he felt unable to articulate at school. We suggest that, given the current concern over widening participation, these two cases provide hints that all is not well with school gate-keeping and career guidance procedures.
VERY PRELIMINARY Talent Sorting and Skill Complementarity Among Software Engineers

Conventional wisdom in Silicon Valley suggests that firms need to have some top talent on hand in order to recruit additional top talent. This may be because skilled engineers and other professionals want to work with other top performers and/or because firms can gain from complementarities in production among these employees. We analyze this notion empirically using longitudinal matched employer-employee data on software firms. After decomposing wages into an employee “talent” measure and a firm “quality” measure, we find strong relationships between existing talent, newly hired talent, and firm quality. Firms whose workers exhibit greater talent are able to hire more workers with greater talent. Firms that pay well, controlling for the talent of their workers, are also able to attract relatively talented workers. This suggests that, at least within the software industry, firms are largely segregated according to the skill of their employees. This document reports the results of research and analysis undertaken in part by the U.S. Census Bureau staff. It has undergone a Census Bureau review more limited in scope than that given to official Census Bureau publications. This document is released to inform interested parties of ongoing research and to encourage discussion of work in progress. This research is a part of the U.S. Census Bureau's Longitudinal Employer-Household Dynamics Program (LEHD), which is partially supported by the National Science Foundation Grant SES-9978093 to Cornell University (Cornell Institute for Social and Economic Research), the National Institute on Aging Grant 5 R01 AG018854-02, and the Alfred P. Sloan Foundation. The views expressed herein are attributable only to the author(s) and do not represent the views of the U.S. Census Bureau, its program sponsors or data providers. Some or all of the data used in this paper are confidential data from the LEHD Program. The U.S. Census Bureau is preparing to support external researchers' use of these data; please contact U.S. Census Bureau, LEHD Program, Demographic Surveys Division, FOB 3, Room 2138, 4700 Silver Hill Rd., Suitland, MD 20233, USA.
Perceived Benefits, Attitude, Image, Desire, and Intention in Virtual Golf Leisure

This study first aimed to dissect the components of the benefits that such golfers perceive and/or expect from the game. The study then proceeded to examine the role of these identified perceived benefits in participants’ intention formation by considering their relation to attitudes, image, and desires. Additionally, this study investigated the mediating impact of desires. Both online and field surveys were conducted. A total of nine dimensions of benefits were identified through an exploratory qualitative approach. The collected data (258 usable responses) were analyzed with a series of multiple regression analyses. The results from the regression analyses revealed that dimensions of perceived benefits are generally associated with attitudes and image about screen golf, and that social responsibility is relatively important in inducing attitudes and image. Further, desires were found to be a significant mediator in the proposed model.
Heterogeneous CPU-GPU computing for the finite volume method on 3D unstructured meshes

A recent trend in modern high-performance computing environments is the introduction of accelerators such as GPU and Xeon Phi, i.e. specialized computing devices that are optimized for highly parallel applications and coexist with CPUs. In regular compute-intensive applications with predictable data access patterns, these devices often outperform traditional CPUs by far and thus relegate them to pure control functions instead of computations. For irregular applications however, the gap in relative performance can be much smaller, and sometimes even reversed. Thus, maximizing overall performance in such systems requires that full use of all available computational resources is made. In this paper we study the attainable performance of the cell-centered finite volume method on 3D unstructured tetrahedral meshes using heterogeneous systems consisting of CPUs and multiple GPUs. Finite volume methods are widely used numerical strategies for solving partial differential equations. The advantages of using finite volumes include built-in support for conservation laws and suitability for unstructured meshes. Our focus lies in demonstrating how a workload distribution that maximizes overall performance can be derived from the actual performance attained by the different computing devices in the heterogeneous environment. We also highlight the dual role of partitioning software in reordering and partitioning the input mesh, thus giving rise to a new combined approach to partitioning.
Student perceptions of a culturally diverse classroom environment

The research in the paper involves an application of the actual and preferred versions of a previously‐validated learning environment instrument: the What is Happening in This Classroom (WIHIC) instrument in a complex multi‐cultural university‐level environment. Statistical analyses suggest the instrument is valid in this setting (with Cronbach alpha above 0.80 for all scales), and data analyses using ANOVA point to relatively few differences between preferred and actual environments. The research findings suggest all students would prefer a more interactive and equitable classroom, the latter issue of particular importance for one cohort, namely Indo‐Fijians (descendents of ethnic Indian indentured labourers). With the exception of this, there are few differences based on ethnicity and further analysis also suggests no differences in perceptions vis‐à‐vis collaborative versus competitive learning environments, excepting that analysis based on gender shows females have a slight preference for a more cooperative learning environment.
Global Capital, National State, and the International

The article revisits the Conference of Socialist Economists (CSE) debate on the national state and the global economy, and concludes with an appeal to internationalism. Its purpose is to introduce this debate to a new readership. Contemporary analyses of globalisation and the state tackle issues that were of key importance to this debate—yet the specific critical insights that the CSE debate brought to the fore are lost in a world in which ideology is in the process of producing itself. The article argues that regardless of fashion, these insights are as relevant now as they were then.
Being in the Safety Zone

This study examined how previously suicidal adolescents and emerging adults perceived their emotional experiences while being suicidal. Forty-one females and 9 males previously suicidal between the ages of 15 and 24 were interviewed. Qualitative data were analyzed using a grounded theory approach. Three major themes were identified in participants’ perceptions of their emotional experiences: (a) overwhelming despair, (b) shame and self-loathing, and (c) alienation and personal isolation. These emotional states were viewed within the multidimensional process of responding to emotions. Participants’ inability to deal with intense negative emotions appeared to be related to their suicidal state.
A novel DKC1 mutation, severe combined immunodeficiency (T+B–NK– SCID) and bone marrow transplantation in an infant with Hoyeraal–Hreidarsson syndrome

Summary. X‐linked Hoyeraal–Hreidarsson syndrome (XL‐HHS) is the severe infantile variant of X‐linked dyskeratosis congenita (XL‐DC) and both are due to mutations in the DKC1 gene within Xq28. We report a novel missense mutation in DKC1 exon 3 (T113→C, Ile38Thr) in a Sardinian infant with XL‐HHS in whom the disease was characterized by ‘T+B–NK–’ severe combined immunodeficiency and bone marrow failure. He underwent sibling bone marrow transplantation using a conditioning regimen (fludarabine, rabbit antithymocyte globulin, low‐dose melphalan) selected according to the HHS/DC phenotype. This was associated with low toxicity, prompt engraftment with adequate immune reconstitution and full donor haemopoiesis.
In Pursuit of a New 'Enterprise' and 'Entrepreneurship' Paradigm for Learning: Creative Destruction, New Values, New Ways of Doing Things and New Combinations of Knowledge

The paper argues for a new approach to the study of entrepreneurship and a new paradigm as a basis for entrepreneurship education. It also argues that such an approach is unlikely to come from university business schools. It needs an organisational revolution which, however, can be managed within a university as a whole. The paper is divided into two parts. The first explores the political imperative in Europe for development of the 'enterprise culture' and attributes this mainly to pressures for greater international competitiveness. The educational response is then examined and, with the help of a number of recent surveys, some of the key issues pertaining to the development of entrepreneurship education in higher education institutions in the UK and Europe are reviewed. The second part attempts to address the imperative at a more conceptual level. The pursuit of entrepreneurial behaviour is seen as a function of the degree of uncertainty and complexity in the task and broader environment and/or the desire of an individual, in pursuit of an opportunity or problem solution, to create it. It is argued that the key trigger for the growing interest in entrepreneurship is globalization. The way in which this has impacted on the role of the state, the organization of business activity and public services and on individuals to create greater uncertainty and complexity in the environment is explored. This leads to a conclusion that a wide range of stakeholders are being confronted with the need for entrepreneurial behaviour, for example, priests, doctors, teachers, policemen, pensioners and community workers and, indeed, potentially everyone in the community. Entrepreneurship is therefore not solely the prerogative of business. It follows that the traditional focus of entrepreneurship education on business, and new venture management in particular, provides an inadequate basis for response to societal needs. Moreover, the pervasive ideology of the 'heroic' entrepreneur can be seen as a dysfunctional when viewed against the needs of a wider community. The wider notion of 'enterprise' is therefore introduced as a means of moving away from the hitherto narrow paradigm. How this relates to the development of the individual and the design of enterprising organizations is explored. The paper explores the challenge of this broader context by reference to a number of issues central to the globalization debate including: culture, market liberalization, forms of governance and democracy. It then links these with the ontological and epistemological challenge to education. It concludes with discussion as to how this relates to the traditional concept of a university and argues that universities as a whole are in a much better position to respond to the challenge than are business schools.
Bottomonium dipion transitions

Dipion transitions of the subthreshold bottomonium levels {upsilon}(nS){yields}{upsilon}(n{sup '}S){pi}{pi} with n>n{sup '}, n=2, 3, 4 n{sup '}=1, 2 are studied in the framework of the chiral decay Lagrangian, derived earlier. The channels BB, BB*+c.c. , B*B* are considered in the intermediate state and realistic wave functions of {upsilon}(nS), B and B* are used in the overlap matrix elements. Imposing the Adler zero requirement on the transition matrix element, one obtains 2d and 1d dipion spectra in reasonable agreement with experiment.
Producing historical critical marketing studies: theory, method and politics

Purpose – This paper calls attention to the importance of historical research within “critical marketing studies”. It seeks to articulate a historical perspective based on the work of Michel Foucault.Design/methodology/approach – This paper is based on a close reading of relevant Foucaultian primary and secondary texts.Findings – Foucault's scholarship provides a useful counterpoint to the calls for critical theory to form the central paradigm in critical marketing studies, revealing a complex constellation of power/knowledge relations underpinning marketing theory, thought and pedagogy.Originality/value – This is a close reading and examination of a theoretically sophisticated, rigorous scholar who remains largely underexplored in relation to marketing theory and the history of marketing thought.
Factors affecting intention to quit among IT professionals in Turkey

Purpose – The purpose of this paper is to explore the effects of stressors (role ambiguity, role conflict, work‐overload, work‐family conflict), job stress, job satisfaction and organizational commitment on the information technology (IT) professionals' intention to quit their jobs in Turkey.Design/methodology/approach – A structural equation modeling approach was employed to identify the variables that significantly affect the decision to quit. Using LISREL 8.54, data collected from 204 IT professionals were used to test the proposed research model.Findings – The results revealed that intention to quit one's job is explained by job satisfaction and organizational commitment. Besides, role ambiguity and job stress exert negative indirect effects on the intention to quit one's job. Additionally, organizational commitment is strongly explained by job satisfaction, and job satisfaction is predicted by role ambiguity and job stress.Practical implications – The study offers several significant suggestions for .
An assessment of the economic benefits of a mastitis control scheme

Over a six-year period from 1979 to 1985 the incidence of mastitis among dairy herds being recorded in a veterinary practice in Gloucestershire decreased from 26.5 per cent to 19.6 per cent of cows affected each year and from 51.0 to 31.7 cases per 100 cows per year. Over the same period the rolling mean herd milk cell count fell from 346,000/ml to 243,000/ml and the usage of intramammary antibiotic tubes fell from 2.6 to 2.1 per lactating cow per year. The proportion of cases needing repeat treatments in a 12-month period also fell from 25 per cent to 10.6 per cent. Possible causes for the decrease in the incidence of mastitis are given. The cost of an average case of mastitis was estimated to be 40 pounds, and on this basis the farms involved reduced their losses from mastitis by 772 pounds per 100 cows per year, a more than 12-fold return on their investment in veterinary services.
Prompt congestion reaction scheme for data center network using multiple congestion points

With recent advocates on end-to-end congestion control, we still observe lack of consideration of network congestion status in literature. Since end-to-end congestion control mechanisms are capable of gathering path load information through data paths, taking advantage of this information, network systems have potential capacity to react promptly in presence of congestion, especially for paths with multiple congestion points. In this paper, we design a congestion control scheme with consideration of multiple congestion points along data paths. Using an improved ECN mechanism, our scheme tunes source rate with feedbacks collecting from ECNs. We further improve our scheme with saturation detection and congestion prediction mechanisms. Simulation results show that our scheme works effectively. We evaluate our scheme and compare it with DCTCP, a recently proposed congestion control scheme for data center. In scenarios of multiple congestion points, our scheme exhibits better performance in terms of reaction time and stability.
Hypotensive activity of auraptene, a monoterpene coumarin from Citrus spp.

Abstract Context: Citrus spp. (Rutaceae) are well-documented for their cardioprotective properties. Auraptene is a bioactive monoterpene coumarin ether abundantly present in the Citrus spp. Objective: To investigate the hypotensive activity of auraptene. Methods: Different groups of normotensive rats (n = 5 in each group) were subjected to single intravenous injections of auraptene (125, 250 and 500 µg/kg), nifedipine (as positive control; 63, 125 and 250 µg/kg) or negative control [DMSO/normal saline (1:3)]. Mean arterial blood pressure (MABP) and heart rate (HR) were evaluated following each treatment. Results: A dose-dependent hypotensive effect was observed following auraptene injection, which was significant at 250 and 500 µg/kg (p < 0.001) but not 125 µg/kg (p > 0.05). With respect to the positive control, nifedipine reduced MABP at all tested doses, dose-dependently and significantly (p < 0.001). The MABP lowering effect of auraptene was found to be significantly lower than that of nifedipine (p < 0.001). Conclusion: In light of the present findings, auraptene has moderate hypotensive activity. Further investigations are recommended to explore the effects of higher doses as well as oral administration of this phytochemical.
Calotropis procera Latex Extract Affords Protection against Inflammation and Oxidative Stress in Freund's Complete Adjuvant-Induced Monoarthritis in Rats

In view of the well-established anti-inflammatory properties of latex of Calotropis procera (DL), the present study was carried out to evaluate the protective effect of its methanol extract (MeDL) against inflammation and oxidative stress in monoarthritis induced by Freund's complete adjuvant (FCA) in rats. Intra-articular injection of FCA produced inflammation of the joint with a peak effect occurring on day 4 where a maximum increase in the levels of myeloperoxidase and inflammatory mediators like PGE2, TNF-α, and nitric oxide was observed. This was associated with oxidative stress with a marked reduction in the levels of glutathione, catalase, superoxide dismutase and glutathione peroxidase and an increase in the lipid peroxidation as indicated by the higher levels of thiobarbituric acid reactive substances (TBARSs). Subsequently on day 28 the histological analysis of the joint also revealed arthritic changes. Daily treatment of rats with MeDL (50 and 500 mg/kg) and standard anti-inflammatory drug rofecoxib (20 and 100 mg/kg), produced a significant attenuation in the inflammatory response and ameliorated the arthritic changes in the joint. The protection afforded by MeDL and rofecoxib was more pronounced than that of phenylbutazone and was associated with normalization of the levels of inflammatory mediators and biochemical parameters of oxidative stress. However, the overall protection afforded by rofecoxib was better than that of MeDL.
Traumatic Childhood and Marriage

Abstract This exploratory, qualitative study of 84 adults who have survived and transcended a traumatic childhood describes the role their spouses played in the process of rising above their difficult childhood experiences. The participants talked about what they were looking for in a spouse, negative marriage experiences, and the positive role spousal support played in transcending the traumatic childhood. The study of their lives reveals important insights into the role of marriage in the process by which people grow into healthy adults. These insights will be useful to people who work with couples in which one person is seeking to leave past difficulties behind.
The Portuguese Version of the Center for Epidemiologic Studies Depression Scale (CES-D)

Summary: The Center for Epidemiologic Studies Depression Scale (CES-D) is a depression scale designed to measure depressive symptomatology in the general population. The authors developed a Portuguese version of this scale. This article presents the results of the three studies carried out with this version. These results support the reliability and the validity of the scale. The CES-D proved to be sensitive to variations in the intensity of depressive symptomatology and can be used in epidemiological studies or as a screening instrument in a clinical setting. Sex does have some influence on the values of sensitivity and specificity but the educational level has a greater influence on scores: Subjects with a lower education level tend to obtain higher scores with the same level of depressive symptomatology as evaluated by the clinical interview.