Miracle-dz/UniFAR-FTUs huggingface dataset:
Rhetoric of stability and change: The organizational identity work of institutional leadership

This article highlights a dynamic and productive duality in the expression of organizational identity claims between demonstrating coherence with the past and responsiveness in the present. Informed by renewed interest in the concept of institutional leadership, which is precisely concerned with the management of this temporal duality, we argue that its reconciliation depends on active discursive intervention. Drawing from archive data of executive speeches at Procter & Gamble (P&G), we suggest that through dissociation, the rhetorical device to distinguish the claim of an accurate or essential interpretation of core and distinctive values from a peripheral or apparent understanding, leaders actively construct fresh potentialities for organizational change. We thereby develop new insights into the dynamic processes of organizational identity maintenance, revealing its capacity to be regenerative and a herald to the new.
Image-based estimation and nonparametric modeling: Towards enhanced geometric calibration of an X-ray system

Geometric calibrations of medical imaging systems are crucial to allow for advanced (X-ray) imaging techniques. Developments in medical procedures, lightweight system design and the growing costs of healthcare, leads to the desire for simpler and faster calibration approaches. The aim of this paper is to present a novel approach to enhance system calibrations for a wide range of imaging applications. The method is based on the introduction of small markers within the line of sight of the system, by virtue of a small mechanical adjustment to the system. By detecting markers in the X-ray images, displacements between the systems X-ray source and detector are in-situ measured. Additionally, the approach can be used to obtain nonparametric models of the dynamics of the mechanical system, enabling advanced observer-based estimation approaches. The potential of the method is illustrated by experimental results.
Many Sources, One Theme: Analysis of Cyberbullying Prevention and Intervention Websites

Problem statement: Cyberbullying represents the expansion of traditional bullying into the electronic realm. As the problem of cyberbullying typically occurs via the Internet, many cyberbullying prevention and intervention resources have been made available online. The purpose of this qualitative study was to determine general characteristics of cyberbullying prevention and intervention websites. This study was conducted as a preliminary survey of seventeen independent cyberbullying prevention websites. Approach: Categories for analysis were developed following consultation with three psychologists, one of whom specializes in online psycho educational interventions. Each of the seventeen cyberbullying websites was then reviewed for the same variables of target audience, main topics, use of published research and methods for relaying information. Results: Fourteen of the websites are oriented toward informing parents and caregivers while seven address latency aged children, eight address children ages eleven and twelve and eleven address adolescents. Nine of the websites address educators and six provide information for law enforcement professionals. The main topics consist of cyberbullying prevention and Internet safety tips, availability of a commercial product, methods for managing cyberbullying, signs a child is experiencing cyberbullying, information regarding the motivations for cyberbullying and miscellaneous but related topics. Sixteen of the seventeen reviewed websites present information comparable to the information found in empirically validated studies and ten of the websites list references to the published literature on the site. Methods for relaying information include text only, interactive formats, videos, personal stories, message board/blogs and newsletters. Conclusion/Recommendations: Psychological research showed that victims of cyberbullying believe they should manage the problem on their own and rarely confide in their parents. The results of analysis of the target audiences suggested that there is a disconnection between Internet based cyberbullying interventions and the main target audiences. To address this problem, future research should include evaluation of the accessibility and effectiveness of cyberbullying psycho educational websites designed for youth. Other areas to be researched include the potential negative consequences of online cyberbullying interventions and the need for Internet based cyberbullying prevention websites designed for cyberbullies. A definite area in need of research is on the efficacy of Internet based cyberbullying psycho educational sites in decreasing incidences of cyberbullying.
Garlic oil and Helicobacter pylori infection

PBC. In 1989, a 45-yr-old woman was admitted to the hospital because of right upper quadrant abdominal pain, asthenia, anorexia, and weight loss in the previous 3 months. On physical examination, irregular hepatomegaly was noticed. There were no palpable adenopathy or splenomegaly. Laboratory data showed elevation of alkaline phosphatase and were otherwise within normal limits. Abdominal ultrasonography and CT scan disclosed several space-occupying lesions in right and left hepatic lobes. Fine-needle aspiration of one of these lesions was informed as metastases of poorly differentiated carcinoma. An extensive search of a primary tumor was unsuccessful. An exploratory laparotomy was performed; liver nodules and hilar adenopathy were noticed. Pathological examination of adenopathy showed a large B-cell lymphoma (centroblastic lymphoma). Extent of disease was evaluated with a chest CT scan and a bone marrow biopsy that were normal. The patient was treated with eight cycles of chemotherapy (cyclophosphamide, doxorubicin, vincristine, and prednisone); a complete remission of liver lesions was observed. Six years later, she complained of arthralgia, pruritus, and Raynaud’s phenomenon. Antimitochondrial antibodies were positive (1/1280), and a percutaneous liver biopsy showed an inflammatory process of the portal triads with focal ductal injury, compatible with stage I PBC. Signs of malignant infiltration were not appreciated. In our patient, the diagnosis of PHL in assumable in the absence of liver histology, in view of the clinical and radiological presentation, the response to therapy with long lasting remission, and the evidence of lymphomatous involvement of the hilar lymph nodes. Unfortunately, we cannot elucidate whether PBC was present when the patient was first seen, for liver biopsy and antimitochondrial antibodies were not performed. We believe that, although our case does not fulfill the strict criteria proposed by Caccamo et al. (2), it should be considered as a PHL, because extension to affected lymph nodes probably reflects local dissemination.
Ethnolinguistic Vitality Perceptions and Language Revitalisation in Bashkortostan

After the dissolution of the Soviet Union, the Russification process has mostly ended in the former Soviet Republics and in the present Russian Federation Republics. In some regions, strong mother tongue revitalisation efforts are witnessed. In this article, the relationship between ethnolinguistic vitality perceptions and the language revitalisation process of Bashkortostan is examined. The theoretical framework of the study is based on Giles et al.'s (1977) ethnolinguistic vitality theory and Edwards' (1992) typology of minority language situation. In line with these, the ethnolinguistic vitality questionnaire was administered to 250 Bashkir informants. Regardless of their background, rural or urban, Bashkir informants perceived Russian and Bashkir vitality similarly. Contrary to expectations, Bashkir vitality was found to be high. In parallel, in interviews with key informants (educational experts and policy makers), a strong language revitalisation movement was observed.
Tissue Classification Based on 3D Local Intensity Structures for Volume Rendering

This paper describes a novel approach to tissue classification using three-dimensional (3D) derivative features in the volume rendering pipeline. In conventional tissue classification for a scalar volume, tissues of interest are characterized by an opacity transfer function defined as a one-dimensional (1D) function of the original volume intensity. To overcome the limitations inherent in conventional 1D opacity functions, we propose a tissue classification method that employs a multidimensional opacity function, which is a function of the 3D derivative features calculated from a scalar volume as well as the volume intensity. Tissues of interest are characterized by explicitly defined classification rules based on 3D filter responses highlighting local structures, such as edge, sheet, line, and blob, which typically correspond to tissue boundaries, cortices, vessels, and nodules, respectively, in medical volume data. The 3D local structure filters are formulated using the gradient vector and Hessian matrix of the volume intensity function combined with isotropic Gaussian blurring. These filter responses and the original intensity define a multidimensional feature space in which multichannel tissue classification strategies are designed. The usefulness of the proposed method is demonstrated by comparisons with conventional single-channel classification using both synthesized data and clinical data acquired with CT (computed tomography) and MRI (magnetic resonance imaging) scanners. The improvement in image quality obtained using multichannel classification is confirmed by evaluating the contrast and contrast-to-noise ratio in the resultant volume-rendered images with variable opacity values.
BitTorrent Fairness : Analysis and Improvements

BitTorrent is an extremely effective and popular peer-to-peer file distribution application. It differs from traditional peer-to-peer file-sharing applications in that large files are decomposed into blocks, and in order to download a file, a peer concurrently retrieves blocks from multiple peers. Measurement and simulation studies have suggested that although BitTorrent achieves excellent utilization of upload capacity, itsfairness properties are less impressive. In this paper, we seek to understand, primarily through simulation analysis, the fairness properties of the exchange mechanism that lies at the core of the BitTorrent protocol. We focus on a specific fairness metric, defined as the ratio of bytes uploaded to that downloaded by each individual peer. We propose three modifications to the protocol, and examine their impact on the fairness peers experience.
How Children Reason about Gains and Losses: Framing Effects in Judgement and Choice

Three experiments considered how the positive or negative framing of decisions affects children’s EV (expected value) judgements and choices. In Experiment 1, 6- and 9-year-olds chose between a sure gain and a gamble or between a sure loss and a gamble, all with the same EV. Children preferred the sure thing more in the positive than negative frame, as also appears for adults. In Experiment 2, both frames involved potential losses. In their judgements, 6- and 9-year-olds used the normative multiplication rule for integrating risk and amount at risk, with minor frame differences, but when choosing between the same options, they were risk-averse in the save, risk-seeking in the loss frame. In Experiment 3, 5-year-olds used multiplication for saves, with an irregular pattern for losses. Overall, children’s judgements conform closely to normativity. At the same time, children’s choices, like adults’, show non-normative framing effects. This decalage may reflect the involvement of more intuitive processes in j.
Coexisting Hidden Attractors in a 4-D Simplified Lorenz System

A new simple four-dimensional equilibrium-free autonomous ODE system is described. The system has seven terms, two quadratic nonlinearities, and only two parameters. Its Jacobian matrix everywhere has rank less than 4. It is hyperchaotic in some regions of parameter space, while in other regions it has an attracting torus that coexists with either a symmetric pair of strange attractors or with a symmetric pair of limit cycles whose basin boundaries have an intricate fractal structure. In other regions of parameter space, it has three coexisting limit cycles and Arnold tongues. Since there are no equilibria, all the attractors are hidden. This combination of features has not been previously reported in any other system, especially one as simple as this.
Latino Emergent Bilingual Youth in High Schools

This article explores the results of a study of Latino youth in New York City public high schools. We propose that the common element among the schools is what we call here transcaring, an overarching culture of care that allows for the creation of third spaces within school, transcending traditional dichotomies around language, culture, place, and measurement found in many U.S. schools. We identify the different threads that make up transcaring strategies—translanguaging, transculturación, transcollaboration and transactions through dynamic assessments—focusing on each of its components by drawing examples from our data.
As Time Goes By

Working memory is the system devoted to the simultaneous processing and storage of information needed to perform many cognitive tasks. We present a theory that assumes that time constraints constitute the main limitation of working memory. According to our theory, processing and storage compete for attention, which constitutes a limited resource. As soon as attention is switched away, memory traces suffer from temporal decay, but they can be refreshed by bringing them back into the focus of attention. Because a central bottleneck constrains controlled cognitive activities that require attention so that they must take place one at a time, memory traces decline when the central bottleneck is occupied by processing activities. This results in a sequential functioning of working memory that alternates between processing and maintenance, leading to a trade-off between these two activities. We review empirical evidence of this trade-off and discuss its implications for the increase in working memory capacity over the course of development.
Adaptive molecular evolution of the two-pore channel 1 gene TPC1 in the karst-adapted genus Primulina (Gesneriaceae).

BACKGROUND AND AIMS Limestone karst areas possess high floral diversity and endemism. The genus Primulina, which contributes to the unique calcicole flora, has high species richness and exhibit specific soil-based habitat associations that are mainly distributed on calcareous karst soils. The adaptive molecular evolutionary mechanism of the genus to karst calcium-rich environments is still not well understood. The Ca2+-permeable channel TPC1 was used in this study to test whether its gene is involved in the local adaptation of Primulina to karst high-calcium soil environments. METHODS Specific amplification and sequencing primers were designed and used to amplify the full-length coding sequences of TPC1 from cDNA of 76 Primulina species. The sequence alignment without recombination and the corresponding reconstructed phylogeny tree were used in molecular evolutionary analyses at the nucleic acid level and amino acid level, respectively. Finally, the identified sites under positive selection were labelled on the predicted secondary structure of TPC1. KEY RESULTS Seventy-six full-length coding sequences of Primulina TPC1 were obtained. The length of the sequences varied between 2220 and 2286 bp and the insertion/deletion was located at the 5' end of the sequences. No signal of substitution saturation was detected in the sequences, while significant recombination breakpoints were detected. The molecular evolutionary analyses showed that TPC1 was dominated by purifying selection and the selective pressures were not significantly different among species lineages. However, significant signals of positive selection were detected at both TPC1 codon level and amino acid level, and five sites under positive selective pressure were identified by at least three different methods. CONCLUSIONS The Ca2+-permeable channel TPC1 may be involved in the local adaptation of Primulina to karst Ca2+-rich environments. Different species lineages suffered similar selective pressure associated with calcium in karst environments, and episodic diversifying selection at a few sites may play a major role in the molecular evolution of Primulina TPC1.
The perceived helpfulness of rendering emotional first aid via email

The present research examined the perceived helpfulness of an increasingly widespread mode of psychological assistance, namely, emotional first aid via email. The sample comprised 62 naturally occurring email interactions between distressful clients and trained volunteers operating within the framework of the Israeli Association for Emotional First Aid. Data were gathered by means of a structured questionnaire and open-ended questions so as to examine the clients' motivation to seek help via email and evaluate their satisfaction with the responses obtained. The results revealed a preference for written communication and the accessibility of assistance to be the most frequent reasons for clients to choose the medium of email. Most clients found the responses to be helpful in providing emotional support, enhancing cognitive change and suggesting practical ways of coping. Women perceived the assistance to be more helpful than men did. The results are discussed in terms of the unique value of email as an agent of mental health assistance.
Examining flow experiences in sport contexts: Conceptual issues and methodological concerns

Abstract Athletes' subjective states and experience generally are neglected by sport psychology research due to an emphasis on performance and competitive outcomes. The purpose of this paper was to discuss how the concept of flow—an optimal psychological state—can be studied in the sport context to increase an understanding of athletes' subjective experience. Conceptual issues with respect to conducting flow research in sport were presented, followed by a discussion of the methodological concerns to consider for researchers who want to study flow in sport. Two major conceptual questions were addressed: What is flow and how do flow states occur? The latter question was discussed taking into account both the person and situation factors that may underlie athletes' flow experiences. The section on methodological concerns highlighted the pros and cons of conducting flow research with qualitative or quantitative approaches, explained the experience sampling form, and briefly discussed the complexity of analyzi.
Field Definitions, Spectrum and Universality in Effective String Theories

It is shown, by explicit calculation, that the third-order terms in inverse string length in the spectrum of the effective string theories of Polchinski and Strominger are also the same as in Nambu-Goto theory, in addition to the universal Luescher terms. While the Nambu-Goto theory is inconsistent outside the critical dimension, the Polchinski-Strominger theory is by construction consistent for any space-time dimension. In the analysis of the spectrum, care is taken not to use any field redefinition, as it is felt that this has the potential to obscure important points. Nevertheless, as field redefinition is an important tool and the definition of the field should be made precise, a careful analysis of the choice of field definition leading to the terms in the action is also presented. Further, it is shown how a choice of field definition can be made in a systematic way at higher orders. To this end the transformation of measure involved is calculated, in the context of effective string theory, and thereby a quantum evaluation made of equivalence of theories related by a field redefinition. It is found that there are interesting possibilities resulting from a redefinition of fluctuation field.
Preservice Teachers’ Learning about Cultural and Racial Diversity

Several essential interactions or experiences that had an influence on preservice teachers’ learning and understanding about urban education and diversity are described and discussed. In particular, the author introduces a developmental typology that was used to analyze the preservice teachers’ learning and understanding as a result of a course designed to help preservice teachers develop the knowledge, skills, dispositions, and attitudes necessary to teach in highly diverse and urban school contexts. These developmental interactions that made a critical difference in the preservice teachers’ learning included cultural and racial awareness and insight, critical reflection, and a bridge between theory and practice. Understanding the influence of courses in teacher education that endeavor to provide learning spaces for preservice teachers is especially important as we document the most salient ways to provide all prospective teachers with what they need to make meaningful and significant differences in P-12 urban classrooms.
A call for renewal in tourism ethnographic research: the researcher as both the subject and object of knowledge

Our critique of tourism ethnographic research argues that too much existing published work tends to cite preceding studies as methodological precedents without stating how particular approaches were operationalised. Moreover, findings are often presented as individual cases with limited utility in terms of theory-building or wider understanding of contextual phenomena. We argue that closer attention first to current developments within anthropology which seek to overcome researcher naivety and, second, greater philosophical reflexivity would elevate both the rigour with which such work is undertaken and the seriousness with which it is received in the wider academy. We call for a double-reflexivity in ethnographic research in tourism that accepts both the specific situational nature of individual studies and the wider discursive frames within which they are embedded. We call for constant reflection on, and acknowledgement of, this duality in ethnographic research where, after all, the researcher is so intimately embedded in empirical and subjective terms.
Occurrence of Ventricular Candidiasis in a Lovebird (Agapornis fischeri)

A young Fisher's lovebird (Agapornis fischeri), showed clinical symptoms with general weakness, diarrhea, ruffled feathers and unilateral extrarhinoectasia and died finally. Gross necropsy revealed marked edema, congestion and hemorrhage on the distal part of the gizzard and proximal part of the duodenum. On microscopic examination, a large number of oval budding yeast-like fungi were observed in a stained smear sample from the gizzard and duodenum by the Giemsa method. Histopathologically, there was epithetlial necrosis in the proventriculus and gizzard and inflammation of the proximal intestine. The pseudohyphae and budding yeast-like organisms were most numerous on the surface and extended deep into the submucosa and muscularis layer. Severe hemorrhage, vasculitis with invasion of fungal organisms into the vessels' wall associated with infiltration of inflammatory cells were observed. The disease was diagnosed as candidiasis in the middle part of digestive tract.