Mining streams of short text for analysis of world-wide event evolutions

Streams of short text, such as news titles, enable us to effectively and efficiently learn the real world events that occur anywhere and anytime. Short text messages that are companied by timestamps and generally brief events using only a few words differ from other longer text documents, such as web pages, news stories, blogs, technical papers and books. For example, few words repeat in the same news titles, thus frequency of the term (i.e., TF) is not as important in short text corpus as in longer text corpus. Therefore, analysis of short text faces new challenges. Also, detecting and tracking events through short text analysis need to reliably identify events from constant topic clusters; however, existing methods, such as Latent Dirichlet Allocation (LDA), generates different topic results for a corpus at different executions. In this paper, we provide a Finding Topic Clusters using Co-occurring Terms (FTCCT) algorithm to automatically generate topics from a short text corpus, and develop an Event Evolution Mining (EEM) algorithm to discover hot events and their evolutions (i.e., the popularity degrees of events changing over time). In FTCCT, a term (i.e., a single word or a multiple-words phrase) belongs to only one topic in a corpus. Experiments on news titles of 157 countries within 4 months (from July to October, 2013) demonstrate that our FTCCT-based method (combining FTCCT and EEM) achieves far higher quality of the event's content and description words than LDA-based method (combining LDA and EEM) for analysis of streams of short text. Our method also visualizes the evolutions of the hot events. The discovered world-wide event evolutions have explored some interesting correlations of the world-wide events; for example, successive extreme weather phenomenon occur in different locations - typhoon in Hong Kong and Philippines followed hurricane and storm flood in Mexico in September 2013. © 2014 Springer Science+Business Media New York.

Reframing 'the problem': students from low socioeconomic status backgrounds transitioning to university

At the heart of this book are people enrolling at university for the first time and entering into the broad variety of social relations and contexts entailed in their ‘coming to know’ at, of and through university.

Contributory factors to patient safety incidents in primary care: protocol for a systematic review

BACKGROUND: Organisations need to systematically identify contributory factors (or causes) which impact on patient safety in order to effectively learn from error. Investigations of error have tended to focus on taking a reactive approach to learning from error, mainly relying on incident-reporting systems. Existing frameworks which aim to identify latent causes of error rely almost exclusively on evidence from non-healthcare settings. In view of this, the Yorkshire Contributory Factors Framework (YCFF) was developed in the hospital setting. Eighty-five percent of healthcare contacts occur in primary care. As a result, this review will build on the work that produced the YCFF, by examining the empirical evidence that relates to the contributory factors of error within a primary care setting. METHODS/DESIGN: Four electronic bibliographic databases will be searched: MEDLINE, Embase, PsycInfo and CINAHL. The database search will be supplemented by additional search methodologies including citation searching and snowballing strategies which include reviewing reference lists and reviewing relevant journal table of contents, that is, BMJ Quality and Safety. Our search strategy will include search combinations of three key blocks of terms. Studies will not be excluded based on design. Included studies will be empirical studies conducted in a primary care setting. They will include some description of the factors that contribute to patient safety. One reviewer (SG) will screen all the titles and abstracts, whilst a second reviewer will screen 50% of the abstracts. Two reviewers (SG and AH) will perform study selection, quality assessment and data extraction using standard forms. Disagreements will be resolved through discussion or third party adjudication. Data to be collected include study characteristics (year, objective, research method, setting, country), participant characteristics (number, age, gender, diagnoses), patient safety incident type and characteristics, practice characteristics and study outcomes. DISCUSSION: The review will summarise the literature relating to contributory factors to patient safety incidents in primary care. The findings from this review will provide an evidence-based contributory factors framework for use in the primary care setting. It will increase understanding of factors that contribute to patient safety incidents and ultimately improve quality of health care.

Protocol-directed sedation versus non-protocol-directed sedation to reduce duration of mechanical ventilation in mechanically ventilated intensive care patients (review)

Background : The sedation needs of critically ill patients have been recognized as a core component of critical care and meeting these is vital to assist recovery and ensure humane treatment. There is growing evidence to suggest that sedation requirements are not always optimally managed. Sub-optimal sedation incorporates both under- and over-sedation and has been linked to both short-term (e.g. length of stay) and long-term (e.g. psychological recovery) outcomes. Various strategies have been proposed to improve sedation management and address aspects of assessment as well as delivery of sedation.

Objectives : To assess the effects of protocol-directed sedation management on the duration of mechanical ventilation and other relevant patient outcomes in mechanically ventilated intensive care unit (ICU) patients. We looked at various outcomes and examined the role of bias in order to examine the level of evidence for this intervention.

Search methods : We searched the Cochrane Central Register of Controlled trials (CENTRAL) (2013; Issue 11), MEDLINE (OvidSP) (1990 to November 2013), EMBASE (OvidSP) (1990 to November 2013), CINAHL (BIREME host) (1990 to November 2013), Database of Abstracts of Reviews of Effects (DARE) (1990 to November 2013), LILACS (1990 to November 2013), Current Controlled Trials and US National Institutes of Health Clinical Research Studies (1990 to November 2013), and reference lists of articles. We re-ran the search in October 2014. We will deal with any studies of interest when we update the review.

Selection criteria : We included randomized controlled trials (RCTs) conducted in adult ICUs comparing management with and without protocol-directed sedation.

Data collection and analysis : Two authors screened the titles and abstracts and then the full-text reports identified from our electronic search. We assessed seven domains of potential risk of bias for the included studies. We examined the clinical, methodological and statistical heterogeneity and used the random-effects model for meta-analysis where we considered it appropriate. We calculated the mean difference (MD) for duration of mechanical ventilation and risk ratio (RR) for mortality across studies, with 95% confidence intervals (CI).

Main results : We identified two eligible studies with 633 participants. Both included studies compared the use of protocol-directed sedation, specifically protocols delivered by nurses, with usual care. We rated the risk of selection bias due to random sequence generation low for one study and unclear for one study. The risk of selection bias related to allocation concealment was low for both studies. We also assessed detection and attrition bias as low for both studies while we considered performance bias high due to the inability to blind participants and clinicians in both studies. Risk due to other sources of bias, such as potential for contamination between groups and reporting bias, was considered unclear. There was no clear evidence of differences in duration of mechanical ventilation (MD -5.74 hours, 95% CI -62.01 to 50.53, low quality evidence), ICU length of stay (MD -0.62 days, 95% CI -2.97 to 1.73) and hospital length of stay (MD -3.78 days, 95% CI -8.54 to 0.97) between people being managed with protocol-directed sedation versus usual care. Similarly, there was no clear evidence of difference in hospital mortality between the two groups (RR 0.96, 95% CI 0.71 to 1.31, low quality evidence). ICU mortality was only reported in one study preventing pooling of data. There was no clear evidence of difference in the incidence of tracheostomy (RR 0.77, 95% CI 0.31 to 1.89). The studies reported few adverse event outcomes; one study reported self extubation while the other study reported re-intubation; given this difference in outcomes, pooling of data was not possible. There was significant heterogeneity between studies for duration of mechanical ventilation (I2 = 86%, P value = 0.008), ICU length of stay (I2 = 82%, P value = 0.02) and incidence of tracheostomy (I2 = 76%, P value = 0.04), with one study finding a reduction in duration of mechanical ventilation and incidence of tracheostomy and the other study finding no difference.

Authors' conclusions : There is currently insufficient evidence to evaluate the effectiveness of protocol-directed sedation. Results from the two RCTs were conflicting, resulting in the quality of the body of evidence as a whole being assessed as low. Further studies, taking into account contextual and clinician characteristics in different ICU environments, are necessary to inform future practice. Methodological strategies to reduce the risk of bias need to be considered in future studies.

The naked self: Kierkegaard and personal identity

The Naked Self explores Kierkegaard's understanding of selfhood by situating his work in relation to central problems in contemporary philosophy of personal identity: the role of memory in selfhood, the relationship between the notional and actual subjects of memory and anticipation, the phenomenology of diachronic self-experience, affective alienation from our past and future, psychological continuity, practical and narrative approaches to identity, and the intelligibility of posthumous survival. By bringing his thought into dialogue with major living and recent philosophers of identity (such as Derek Parfit, Galen Strawson, Bernard Williams, J. David Velleman, Marya Schechtman, Mark Johnston, and others), Stokes reveals Kierkegaard as a philosopher with a significant--if challenging--contribution to make to philosophy of self and identity.

Online dating

Communication, Digital Media and Everyday Life uses stories to explain the journey from ‘new media in communication’ to ‘digital media is communication’ and provide students with a thorough introduction to communication and media theory and practice. It recognises that for generations Y and Z, ‘digital media’ is now embedded into most aspects of everyday life and integrated into contemporary communication as much as speaking, reading and writing.

The missing evidence: a systematic review of patients' experiences of adverse events in health care

PURPOSE: Preventable patient harm due to adverse events (AEs) is a significant health problem today facing contemporary health care. Knowledge of patients' experiences of AEs is critical to improving health care safety and quality. A systematic review of studies of patients' experiences of AEs was conducted to report their experiences, knowledge gaps and any challenges encountered when capturing patient experience data. DATA SOURCES: Key words, synonyms and subject headings were used to search eight electronic databases from January 2000 to February 2015, in addition to hand-searching of reference lists and relevant journals. STUDY SELECTION: Titles and abstracts of publications were screened by two reviewers and checked by a third. Full-text articles were screened against the eligibility criteria. DATA EXTRACTION: Data on design, methods and key findings were extracted and collated. RESULTS: Thirty-three publications demonstrated patients identifying a range of problems in their care; most commonly identified were medication errors, communication and coordination of care problems. Patients' income, education, health burden and marital status influence likelihood of reporting. Patients report distress after an AE, often exacerbated by receiving inadequate information about the cause. Investigating patients' experiences is hampered by the lack of large representative patient samples, data over sufficient time periods and varying definitions of an AE. CONCLUSION: Despite the emergence of policy initiatives to enhance patient engagement, few studies report patients' experiences of AEs. This information must be routinely captured and utilized to develop effective, patient-centred and system-wide policies to minimize and manage AEs.

Sedation protocols to reduce duration of mechanical ventilation in the ICU: a Cochrane Systematic Review

AIMS: Assess the effects of protocol-directed sedation management on the duration of mechanical ventilation and other relevant patient outcomes in mechanically ventilated intensive care unit patients. BACKGROUND: Sedation is a core component of critical care. Sub-optimal sedation management incorporates both under- and over-sedation and has been linked to poorer patient outcomes. DESIGN: Cochrane systematic review of randomized controlled trials. DATA SOURCES: Cochrane Central Register of Controlled trials, MEDLINE, EMBASE, CINAHL, Database of Abstracts of Reviews of Effects, LILACS, Current Controlled Trials and US National Institutes of Health Clinical Research Studies (1990-November 2013) and reference lists of articles were used. REVIEW METHODS: Randomized controlled trials conducted in intensive care units comparing management with and without protocol-directed sedation were included. Two authors screened titles, abstracts and full-text reports. Potential risk of bias was assessed. Clinical, methodological and statistical heterogeneity were examined and the random-effects model used for meta-analysis where appropriate. Mean difference for duration of mechanical ventilation and risk ratio for mortality, with 95% confidence intervals, were calculated. RESULTS: Two eligible studies with 633 participants comparing protocol-directed sedation delivered by nurses vs. usual care were identified. There was no evidence of differences in duration of mechanical ventilation or hospital mortality. There was statistically significant heterogeneity between studies for duration of mechanical ventilation. CONCLUSIONS: There is insufficient evidence to evaluate the effectiveness of protocol-directed sedation as results from the two randomized controlled trials were conflicting.

Barriers to primary care clinician adherence to clinical guidelines for the management of low back pain: a systematic review and meta-synthesis of qualitative studies

INTRODUCTION: Despite the availability of evidence-based guidelines for the management of low back pain that contain consistent messages, large evidence-practice gaps in primary care remain.

OBJECTIVES: To perform a systematic review and meta-synthesis of qualitative studies that have explored primary care clinicians' perceptions and beliefs about guidelines for low back pain, including perceived enablers and barriers to guideline adherence.

METHODS: Studies investigatingperceptions and beliefs about low back pain guidelines were included if participants were primary care clinicians and qualitative methods had been used for both data collection and analysis. We searched major databases up to July 2014. Pairs of reviewers independently screened titles and abstracts, extracted data, appraised method quality using the CASP checklist, conducted thematic analysis and synthesized the results in narrative format.

RESULTS: Seventeen studies, with a total of 705 participants, were included. We identified three key emergent themes and eight subthemes: (1) guideline implementation and adherence beliefs and perceptions; (2) maintaining the patient-clinician relationship with imaging referrals; (3) barriers to guideline implementation. Clinicians believed that guidelines were categorical, prescriptive and constrained professional practice; however popular clinical practices superseded the guidelines. Imaging referrals were used to manage consultations and to obtain definitive diagnoses. Clinicians' perceptions reflected a lack of content knowledge and understanding of how guidelines are developed.

DISCUSSION: Addressing misconceptions and other barriers to uptake of evidence-based guidelines for managing low back pain is needed to improve knowledge transfer and close the evidence-practice gap in the treatment of this common condition.

Trainee underperformance: a guide to achieving resolution

BACKGROUND: Underperformance and the disharmony it can cause are not commonly faced by trainees. However, when it occurs, a process to recognize and manage the issues compassionately must be put in place. METHOD: A literature review was undertaken to outline processes and themes in addressing and resolving these types of issues. A PubMed search using 'surgical underperformance' and 'remedial teaching' was used as a broad template to find papers that illustrated key concepts. One thousand four hundred and fifteen papers were identified. In papers where the titles were in line with the stated topic, 294 abstracts were reviewed. Key papers were used to develop themes. Additional cross-referenced papers were also included where relevant. RESULTS: There can be a variety of reasons for trainee underperformance. The root cause is not always clear. Disharmony can result in a surgical unit during this time. The involved trainee as well as the members of the clinical unit may experience a variety of stressors. A systematic process of management can be used to evaluate the situation and bring some resolution to difficulties in working relationships. CONCLUSION: Early constructive intervention improves outcomes. There should be a process to systematically and compassionately resolve underlying issues. This paper outlines the disharmony that can result from trainee underperformance and offers guidance for resolution to those involved.

Using Interlibrary Loan Data as a Section Tool: ILL Trails Provide Collection Clues

This article describes analyzing Interlibrary Loan data to help inform collection management decision and offers guidance for formulating policies for discerning borrowed titles indicative of gaps in the library from special-interest pursuits beyond the scope of the university curriculum.

O posicionamento dos tribunais perante os contratos de distribuição (1980-1999)

Esta pesquisa tem por objeto a análise sistemática da jurisprudência brasileira sobre os contratos de distribuição entre os anos de 1.980 e 2.000, procurando identificar qual a posição dos nossos Tribunais face a esses contratos. Nessa linha, constatou-se que os casos (acórdãos) abrem-se em cinco grandes blocos, quais sejam: (1) atribuição/divisão territorial; (2) questões possessórias; (3) renovatória de locação; (4) rescisão dos contratos de distribuição. Este grupo divide-se (i) naqueles contratos sujeitos à Lei Ferrari, (ii) naqueles referentes ao setor de combustíveis e derivados e (iii) naqueles não subsumíveis a tal diploma; (5) questões processuais relevantes, dividido em (i) litisconsórcio necessário e (ii) título executivo extrajudicial. Além disso, por se tratar de uma avenca atípica na maioria dos casos, a pesquisa procurou extrair de cada um dos casos qual o conceito de contrato de distribuição adotado.

Publicidade: comércio, cultura e profissão (parte inicial)

O universo daquilo que é abertamente comercial na sociedade contemporânea costuma ser tratado nos meios acadêmicos de forma costumeiramente distante, simplista e ressentida. Ou, ao contrário, através do otimismo ingênuo característico da literatura de celebração. O estudo da história social da publicidade e do marketing é estratégico para avançar contra esse maniqueísmo paralisante. Ele ajuda a ampliar a visão das relações entre industrialização capitalista e mercado, urbanização e modernização, comunicação de massa e vida familiar, favorecendo uma visão mais adulta dos significados do consumo, tanto material quanto simbólico. O texto apoia-se em alguns títulos selecionados em uma bibliografia especializada recolhida recentemente nos EUA, e escolhidos por sua relevância em recolocar questões de sociologia da cultura.

Property rights as a public policy tool: an empirical analysis of the social and economic effects

Secure property rights are considered a key determinant of economic development. However, the evaluation of the causal effects of land titling is a difficult task. The Brazilian government through a program called "Papel Passado" has issued titles, since 2004, to over 85,000 families and has the goal to reach 750,000. Furthermore, another topic in Public Policy that is crucial to developing economies is income generation and child labor force participation. Particularly, in Brazil, about 5.4 million children and teenagers between 5 and 17 years old are still working. This thesis examines the direct impact of securing a property title on income and child labor force participation. In order to isolate the causal role of ownership security, this study uses a comparison between two close and very similar communities in the City of Osasco case (a town with 650,000 people in the São Paulo metropolitan area). One of them, Jardim Canaã, was fortunated to receive the titles in 2007, the other, Jardim DR, given fiscal constraints, only will be part of the program schedule in 2012, and for that reason became the control group. Also, this thesis also aims to test if there is any relationship between land title and happiness. The estimates suggest that titling results in a substantial decrease of child labor force participation, increase of income and happiness for the families that received the title compared to the others.

Organizações da sociedade civil de interesse público e as parcerias com os municípios do estado de Pernambuco: um olhar sobre a atuação das OSCIPs à luz do ideário de sua criação

Análise das parcerias firmadas entre Organizações da Sociedade Civil de Interesse Público e municípios do interior do Estado de Pernambuco frente ao permissivo legal. Estado e neoliberalismo. O Estado visto como ineficiente e incapaz de prestar os serviços que lhe são próprios. A Reforma do Estado como mote para estimular a transferência de atividades exercidas pelo Estado para entidades privadas que “atenderiam a interesses públicos” desvinculados do assim denominado núcleo estratégico configurado por funções essenciais à definição e execução das políticas públicas. Burocracia e gerencialismo. Plano Diretor da Reforma do Aparelho do Estado. A transferência das atividades não-exclusivas do Estado vista como saída para a melhoria da capacidade de o Estado atender às demandas sociais. Serviços sociais ou não exclusivos. Publicização ou privatização? Terceiro setor. Organizações não governamentais. Entidades sem fins lucrativos. Títulos e qualificações concedidos a entidades do terceiro setor. Organizações sociais - OSs: a tentativa de privatização de entidades estatais. Os contratos de gestão como mecanismo de obtenção de resultados. As organizações da sociedade civil de interesse público - OSCIPs e a nova tentativa de passar atividades prestadas pelo Estado para o setor privado, o chamado “terceiro setor”. Os termos de parceria como forma de passar prestação de serviços a particular sem o devido processo de concorrência. O voluntariado como meio em si para prestação dos serviços objeto dos termos de parceria. As muitas brechas e fragilidades da Lei 9.790/1999 – Lei das OSCIPs, considerada o marco legal do terceiro setor. As “parcerias” entre municípios do Estado de Pernambuco e entidades qualificadas como OSCIPs com intuitos diversos do “proposto” na Lei.