5,388 research outputs found
Promoting Transformative Encounters in Libraries and Archives
Purpose In several existing studies of Information Encountering (IE), a recurring sub-phenomenon of serendipity arises that indicates the potential for certain unexpected encounters with information to be transformative. The author labels this sub-phenomenon Transformative Information Encountering (TIE), deriving its definition from an application of Transformative Education (TE) theory to existing understandings of IE. This paper aims to discuss the potential for librarians and archivists to promote TIE through everyday practices. Design/methodology/approach After defining and identifying TIE in existing studies of IE, this article will put models of IE in conversation with theories of TE and propose ways in which TIE may arise in the everyday work of librarians and archivists. Findings In TE theory, there are three phases of the process of critical premise reflection that may be especially relevant to the work of libraries and archives. These are a disorienting dilemma (phase 1); recognition that the process of transformation is shared (phase 4); and acquiring knowledge and skills (phase 7). Each of these aligns with aspects of IE models. Practical implications Understanding how TIE might inform everyday Library and Information Science (LIS) work may increase the positive impact cultural institutions have on the communities they serve. Originality/value While several IE studies have suggested the existence of TIE as a sub-phenomenon, none thus far have attempted to define it or apply an understanding of it to LIS work
[Review of] \u3cem\u3eArchives and Special Collections as Sites of Contestation\u3c/em\u3e by Mary Kandiuk
[Review of] \u3cem\u3eMapping Inequality: Redlining in New Deal America\u3c/em\u3e by Robert K. Nelson
Partnering Preservation with Sustainability
As the archival profession is inextricable from future-focused thinking, sustainable preservation must be incorporated into archival practice. Sustainable thinking considers the economic, environmental, social, and cultural needs of both present and future generations, without privileging one factor over another. This article investigates the existing literature on sustainable preservation practices in archives. Sustainability presents a challenge to the archival mission. Becoming more sustainable begins with changing practices, which requires investing time, money, and energy to learn new information. The imperative to provide care for cultural resources is an argument for proceeding with caution. Nevertheless, the reality of the climate crisis and an ever-growing body of evidence from the archives field suggest that archives can and should adopt more sustainable practices. Research indicates that preservation goals may be more effectively met through sustainable practices, leading to more reliable preservation environments and financial savings for the institution as a result of reduction in energy use. This article identifies opportunities for action archives can take to become more sustainable through building design, learning from cultural preservation traditions, rethinking the role of archivists, and reconsidering the impact of practices, both small and large. In the 1980s, Hugo Stehkämper drew attention to principles for natural air-conditioning reliant upon building design, but civilizations have been developing procedures for preserving cultural heritage materials for centuries prior to the advent of so-called modern technology. In the current century, archives, libraries, and museums are continuing to discover a multitude of effective sustainable methods. Drawing upon decades of study, successes, and failures will allow archivists to assess and rethink practices
Like grandparents, like parents: Empirical evidence and psychoanalytic thinking on the transmission of parenting styles
The authors discuss the issue of intergenerational transmission of parenting from an empirical and psychoanalytic perspective. After presenting a framework to explain their conception of parenting, they describe intergenerational transmission of parenting as a key to interpreting and eventually changing parenting behaviors. Then they present (1) the empirical approach aimed at determining if there is actually a stability across generations that contributes to harsh parenting and eventually maltreatment and (2) the psyphoanalytic thinking that seeks to explain the continuity in terms of representations and clinical phenomena. The authors also discuss the relationship between the attachment and the caregiving systems and hypothesize a common base for the two systems in childhood experience. Finally, they propose the psychoanalytic perspective as a fruitful theoretical framework to integrate the evidence for the neurophysiological mediators and moderators of intergenerational transmission. Psychoanalytically informed research can provide clinically relevant insights and hypotheses to be tested
Events with Isolated Charged Leptons and Large Missing Transverse Momentum at HERA
Striking events with isolated charged leptons, large missing transverse
momentum and large transverse momentum of the hadronic final state were
observed at the electron proton collider HERA in a data sample corresponding to
a luminosity of about 130 pb-1. The H1 collaboration observed 11 events with
isolated electrons or muons and with transverse momentum above 25 GeV. Only
3.4+-0.6 events were expected from Standard Model (SM) processes. Six of these
events have a transverse momentum of greater than 40 GeV, while 1.3+-0.3 events
were expected. The ZEUS collaboration observed good agreement with the SM.
However, ZEUS found two events with a similar event topology, but tau leptons
instead of electrons or muons in the final state. Only 0.2+-0.05 events were
expected from SM processes. For various hypotheses the compatibility of the
experimental results was investigated with respect to the SM and with respect
to possible explanations beyond the SM. Prospects for the high-luminosity
HERA-II data taking period are given
Reliability and inter-observer agreement of dermoscopic diagnosis of melanoma and melanocytic naevi
The aim of this study was to analyse the reliability and the inter- observer agreement of dermoscopy in the diagnosis of melanocytic skin lesions. Nine dermatologists, with a different training experience and who routinely used dermoscopy in different hospitals in Italy, evaluated clinical and dermoscopy photographs of 15 melanocytic lesions (four invasive melanomas, four histologically common naevi, and seven naevi with histological atypia). A further series of dermoscopic photographs of 40 melanocytic lesions was evaluated to quantify inter-observer concordance in recognizing dermoscopic criteria. Compared to the true (histological) diagnosis, clinical diagnosis (categories: melanoma, common naevus, atypical naevus) was correct in 40% of cases (range, 27-53%). The percentage raised to 55% (40-73%) by the use of dermoscopy, with an average improvement of 15.6%. Concerning melanoma, clinical diagnosis resulted in a sensitivity of 41.9%, specificity of 77.8%, positive predictive value (PPV) of 36.1%, negative predictive value (NPV) of 81.8%. By using dermoscopy, an improvement of diagnostic performance was found (sensitivity 75%, specificity 88.8%, VPP 71.0%, VPN 90.7%). The inter-observer agreement in melanoma diagnosis, by using dermoscopy, was similar to that obtained by clinical examination (k statistics = 0.54 and 0.52, respectively). Concerning dermoscopic criteria, the best agreement among observers was found for pseudopods, a dermoscopic parameter related to the radial growth phase of melanoma. We conclude that dermoscopy is an useful tool for a non-invasive diagnosis of melanocytic skin lesions, improving the diagnostic performance compared to clinical examination
Longitudinal painting schemes for H- charge exchange injection into the PS2
Minimization of direct space charge tune shift at injection into the PS2 is important for the reduction of beam losses. A determining parameter for the tune shift is the bunching factor, defined as mean current over peak current for one RF period. Various longitudinal painting schemes for PS2 injection, all based on synchrotron motion, have been studied with respect to the resulting bunching factors
Epiluminescence microscopy: Criteria of cutaneous melanoma progression
Background: Cutaneous melanoma develops through a series of evolutionary steps (intraepidermal, radial, and vertical growth phases) that are traceable in specific histologic features. Epiluminescence microscopy (ELM) is an in vivo technique that enables the visualization of morphologic structures in pigmented lesions correlated with specific histologic architectural characteristics. Many ELM criteria associated with cutaneous melanoma have been described, but their correlation with tumor progression has not yet been established. Objective: In this preliminary study our purpose was to explore the possibility of recognizing ELM criteria that allow the in vivo detection of the various phases of melanoma progression as well as tumor depth. Methods: Seventy-two cutaneous melanomas (41 'thin' melanomas [TnM], 0.75 mm thickness) were investigated with ELM for the presence of nine standard ELM criteria; their significance was determined by calculating the chi-square test of independence. Results: A significant association is found between the presence of pigment network and TaM and between the presence of gray-blue areas, vascular pattern, and TkM. Moreover, pigment network plus radial streaming is the most significant association of ELM criteria in TnM, whereas gray-blue areas plus vascular pattern is the greatest in TkM. Conclusion: This study shows a good correlation between certain ELM criteria and the histologic architecture of cutaneous melanoma for a preoperative evaluation of the tumor thickness. Further investigation is needed for verifying on a larger number of cases our pilot estimates of sensitivity and specificity of ELM criteria in thin and thick melanomas
Clinical and dermatoscopic criteria for the preoperative evaluation of cutaneous melanoma thickness
Background: Melanoma thickness measured according to the Breslow method is used to determine surgical margin and in patient selection for sentinel node biopsy. Previous studies did not confirm the reliability of melanoma palpability for clinical prediction of tumor thickness. Recently we reported the usefulness of epiluminescence microscopy (dermatoscopy) for in vivo detection of the phases of melanoma progression, as well as tumor depth. Objective: Our purpose was to determine whether the combination of clinical and dermatoscopic criteria could increase the accuracy in preoperative evaluation of melanoma thickness with respect to the clinical elevation and dermatoscopic assessments considered separately. Methods: In a blind retrospective study, 122 cutaneous melanomas were studied to evaluate the presence of several clinical and dermatoscopic criteria and their relation with the histologic thickness. An algorithm of combined criteria was constructed and statistically assessed. Results: Combinations of palpability, diameter of more than 15 mm, pigment network, gray-blue areas, and atypical vascular pattern allowed correct prediction of thickness in 89% of melanomas when categorized in two groups of less than 0.76 mm and more than 0.75 mm thickness, compared with 75% using palpability, and 80% using dermatoscopic criteria. Lower values were obtained in the further subdivision of melanomas into groups of 0.76 to 1.5 mm and more than 1.5 mm thickness. Conclusion: The combination of clinical and dermatoscopic criteria is a more precise guide for the preoperative evaluation of melanoma thickness than either is alone. However, further studies are needed to verify its applicability in establishing the surgical approach to cutaneous melanoma
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