bluuebunny/crossref_metadata_2025_split huggingface dataset:
Visual Prey Detection Responses of Piscivorous Trout and Salmon: Effects of Light,Turbidity,and Prey Size
Authors: Hansen Adam G. , Beauchamp David A. , Schoen Erik R. 
Published: April 2013

AbstractVisual foraging models provide a useful framework for predicting distribution,foraging success,and predation risk in pelagic communities; however,the visual prey detection capabilities of different predator species within and among taxonomic groups have not been sufficiently evaluated. Our primary objective was to more adequately characterize variation in the reaction distances of piscivorous salmonids by evaluating important anadromous taxa. We measured reaction distances of yearling Chinook Salmon Oncorhynchus tshawytscha and adult Coastal Cutthroat Trout O. clarkii clarkii to fish prey over a range of prey sizes and ecologically relevant light and turbidity levels. Reaction distances of Coastal Cutthroat Trout increased rapidly with increasing light intensity (lx) and attained an average maximum of 187.1 cm above a light threshold of 18.0 lx. Reaction distances of Chinook Salmon increased at a slower rate to a maximum of 122.1 cm above a light threshold of 24.9 lx,declined exponentially with turbidity beyond a threshold of 1.65 NTU,and declined for prey sizes less than 50 mm FL. Reaction distances of Coastal Cutthroat Trout were consistently higher than those of Chinook Salmon across all light levels; this difference could not be attributed to the greater FLs of the Coastal Cutthroat Trout. Results from this and previous studies show that the functional form of reaction distance is similar across piscivorous salmonid species and life stages,but the magnitude of the response can vary considerably. Therefore,to adequately predict the strength of predation effects in pelagic communities,species‐ and life‐stage‐specific responses must be considered.
Signs of Mission: Material Semeiosis and Nineteenth-Century Tswana Architecture
Authors: Crossland Zoë 
Published: April 2013

AbstractThe missionary encounter between the London Missionary Society and Sotho-Tswana communities of southern Africa has been explored by Jean and John Comaroff as work that took place at the level of both signs and practices. In this article, I consider what a Peircean semeiotic might offer to this narrative. I argue that it provides ways to disrupt the sometimes binary relationship of signs and practices while also providing opportunities for productive interdisciplinary conversations about the affective, material, and processual nature of changes in belief and practice.
Signs of the Soul: Toward a Semiotics of Religious Subjectivity
Authors: Leone Massimo 
Published: April 2013

AbstractTaking as a point of departure the description and depiction of the anima ragionevole e beata (sensible and blessed soul) in Ripa’s Iconologia, this essay inquires, from a semiotic point of view, into the labyrinthine development of the Christian imaginary of the soul, considered one of the sources of the cultural semiotics of modern and contemporary subjectivities. Placed between the Greek model of visual representations of psyché, incarnated by countless fleeting but visible beings (sirens, birds, butterflies, snakes, etc.), and the Jewish model of a vital breath that, having to resemble the divine one, must shun any iconic rendering, the Christian imaginary of the soul develops—in parallel with the Christian theology of the soul—paradoxically, seeking to combine its depiction and, simultaneously, the denial of it.
A unifying kinetic framework for modeling oxidoreductase-catalyzed reactions
Authors: Chang Ivan , Baldi Pierre 
Published: April 2013

AbstractMotivation: Oxidoreductases are a fundamental class of enzymes responsible for the catalysis of oxidation–reduction reactions, crucial in most bioenergetic metabolic pathways. From their common root in the ancient prebiotic environment, oxidoreductases have evolved into diverse and elaborate protein structures with specific kinetic properties and mechanisms adapted to their individual functional roles and environmental conditions. While accurate kinetic modeling of oxidoreductases is thus important, current models suffer from limitations to the steady-state domain, lack empirical validation or are too specialized to a single system or set of conditions.Results: To address these limitations, we introduce a novel unifying modeling framework for kinetic descriptions of oxidoreductases. The framework is based on a set of seven elementary reactions that (i) form the basis for 69 pairs of enzyme state transitions for encoding various specific microscopic intra-enzyme reaction networks (micro-models), and (ii) lead to various specific macroscopic steady-state kinetic equations (macro-models) via thermodynamic assumptions. Thus, a synergistic bridge between the micro and macro kinetics can be achieved, enabling us to extract unitary rate constants, simulate reaction variance and validate the micro-models using steady-state empirical data. To help facilitate the application of this framework, we make available RedoxMech: a Mathematica™ software package that automates the generation and customization of micro-models.Availability: The Mathematica™ source code for RedoxMech, the documentation and the experimental datasets are all available from: http://www.igb.uci.edu/tools/sb/metabolic-modeling.Contact: pfbaldi@ics.uci.eduSupplementary information: Supplementary data are available at Bioinformatics online.
Systematic tracking of dysregulated modules identifies novel genes in cancer
Authors: Srihari Sriganesh , Ragan Mark A. 
Published: April 2013

Abstract
Motivation: Deciphering the modus operandi of dysregulated cellular mechanisms in cancer is critical to implicate novel cancer genes and develop effective anti-cancer therapies. Fundamental to this is meticulous tracking of the behavior of core modules, including complexes and pathways across specific conditions in cancer.
Results: Here, we performed a straightforward yet systematic identification and comparison of modules across pancreatic normal and cancer tissue conditions by integrating PPI, gene-expression and mutation data. Our analysis revealed interesting change-patterns in gene composition and expression correlation particularly affecting modules responsible for genome stability. Although in most cases these changes indicated impairment of essential functions (e.g. of DNA damage repair), in several other cases we noticed strengthening of modules possibly abetting cancer. Some of these compensatory modules showed switches in transcription regulation and recruitment of tumor inducers (e.g. SOX2 through overexpression). In-depth analysis revealed novel genes in pancreatic cancer, which showed susceptibility to copy-number alterations (e.g. for USP15 in 17 of 67 cases), supported by literature evidence for their involvement in other tumors (e.g. USP15 in glioblastoma). Two of the identified genes, YWHAE and DISC1, further supported the nexus between neural genes and pancreatic carcinogenesis. Extension of this assessment to BRCA1 and BRCA2 breast tumors showed specific differences even across the two sub-types and revealed novel genes involved therein (e.g. TRIM5 and NCOA6).
Availability: Our software CONTOURv1 is available at: http://bioinformatics.org.au/tools-data/.
Contact: m.ragan@uq.edu.au
Supplementary information: Supplementary data are available at Bioinformatics online.
e-MERLIN resolves Betelgeuse at λ 5 cm: hotspots at 5 R⋆
Authors: Richards A. M. S. , Davis R. J. , Decin L. , Etoka S. , Harper G. M. , Lim J. J. , Garrington S. T. , Gray M. D. , McDonald I. , O’Gorman E. , Wittkowski M. 
Published: April 2013

Abstract
Convection, pulsation and magnetic fields have all been suggested as mechanisms for the transport of mass and energy from the optical photosphere of red supergiants, out to the region where the stellar wind is launched. We imaged the red supergiant Betelgeuse at 0.06–0.18 arcsec resolution, using e-Multi-Element Radio-Linked Interferometer Network (e-MERLIN) at 5.5–6.0 GHz, with a sensitivity of ∼10 μJy beam−1. Most of the radio emission comes from within an ellipse (0.235 × 0.218) arcsec2 (∼5 times the optical radius), with a flux density of 1.62 mJy, giving an average brightness temperature ∼1250 K. This radio photosphere contains two hotspots of 0.53 and 0.79 mJy beam−1, separated by 90 mas, with brightness temperatures 5400 ± 600 K and 3800 ± 500 K. Similar hotspots, at more than double the distance from the photosphere of those seen in any other regime, were detected by the less-sensitive ‘old’ MERLIN in 1992, 1995 and 1996 and many exceed the photospheric temperature of 3600 K. Such brightness temperatures are high enough to emanate from pockets of chromospheric plasma. Other possibilities include local shock heating, the convective dredge-up of hot material or exceptionally cool, low-density regions, transparent down to the hottest layer at ∼40 mas radius. We also detect an arc 0.2–0.3 arcsec to the SW, brightness temperature ∼150 K, in a similar direction to extensions seen on both smaller and larger scales in the infrared and in CO at mm wavelengths. These preliminary results will be followed by further e-MERLIN, Very Large Array and Atacama Large Millimeter/sub-millimeter Array (ALMA) observations to help resolve the problem of mass elevation from 1 to 10 R⋆ in red supergiants.
Gene Discovery of Modular Diterpene Metabolism in Nonmodel Systems
Authors: Zerbe Philipp , Hamberger Björn , Yuen Macaire M.S. , Chiang Angela , Sandhu Harpreet K. , Madilao Lina L. , Nguyen Anh , Hamberger Britta , Bach Søren Spanner , Bohlmann Jörg 
Published: April 2013

Abstract
Plants produce over 10,000 different diterpenes of specialized (secondary) metabolism, and fewer diterpenes of general (primary) metabolism. Specialized diterpenes may have functions in ecological interactions of plants with other organisms and also benefit humanity as pharmaceuticals, fragrances, resins, and other industrial bioproducts. Examples of high-value diterpenes are taxol and forskolin pharmaceuticals or ambroxide fragrances. Yields and purity of diterpenes obtained from natural sources or by chemical synthesis are often insufficient for large-volume or high-end applications. Improvement of agricultural or biotechnological diterpene production requires knowledge of biosynthetic genes and enzymes. However, specialized diterpene pathways are extremely diverse across the plant kingdom, and most specialized diterpenes are taxonomically restricted to a few plant species, genera, or families. Consequently, there is no single reference system to guide gene discovery and rapid annotation of specialized diterpene pathways. Functional diversification of genes and plasticity of enzyme functions of these pathways further complicate correct annotation. To address this challenge, we used a set of 10 different plant species to develop a general strategy for diterpene gene discovery in nonmodel systems. The approach combines metabolite-guided transcriptome resources, custom diterpene synthase (diTPS) and cytochrome P450 reference gene databases, phylogenies, and, as shown for select diTPSs, single and coupled enzyme assays using microbial and plant expression systems. In the 10 species, we identified 46 new diTPS candidates and over 400 putatively terpenoid-related P450s in a resource of nearly 1 million predicted transcripts of diterpene-accumulating tissues. Phylogenetic patterns of lineage-specific blooms of genes guided functional characterization.
The information content of farmland value surveys
Authors: Kuethe Todd H. , Ifft Jennifer 
Published: April 2013

PurposeFarmland plays a critical role in the financial health of the agricultural sector. As a result, a number of institutions closely monitor farm real estate markets and publicly report estimated farmland values. This study aims to compare the information content of reported farmland values from three institutions.Design/methodology/approachA state space model is formulated to link observed price estimates to the unobservable value of farmland. The model considers reported values over the period 1965‐2010 for Iowa from three surveys: Iowa State Extension Service, the Federal Reserve, and the USDA.FindingsThe values reported by Iowa State receive the greatest weight in estimating the unobservable market value, yet the appreciation rates implied by the USDA estimates most closely track those of the unobservable value.Originality/valueThis study is the first to estimate the unobservable value of farm real estate based on observed estimates. The empirical procedure offers a number of unique advantages. It combines information from data reported at both annual and quarterly intervals and addresses potential problems related to cointegration, nonstationarity, and nonlinearity.
Unobservable fuzzy Petri net diagnosis technique
Authors: An Ruoming , Liang Wei 
Published: April 2013

PurposeThe purpose of this paper is to resolve the problem of complex system diagnosis with unobservable events such as Hall thruster.Design/methodology/approachFault class is defined by unobservable transitions subset. Every fault class is departed into four levels of alarm. The level of alarm for a fault class is identified by constructing basis reachability graph and computing j vector and basis marking. Certain factor values of diagnosis results are given by introducing two fuzzy operators. A two‐directional reasoning strategy is adopted which are forward reasoning and backward reasoning.FindingsUsing basis reachability graph and notions of basis marking and j vector, fuzzy Petri net with unobservable transitions can resolve the diagnosis problems with high accuracy and efficiency.Research limitations/implicationsThe relationship between unobservable events must be known.Practical implicationsThe method shows its superiority when it is applied to unobservable systems such as spacecraft.Originality/valueA novel fuzzy Petri net framework for unobservable system multi‐fault diagnosis is put forward which introduces some new ideas.
Self‐reflexivity as the practice of empathy
Authors: Katila Saija , Meriläinen Susan 
Published: April 2013

PurposeThis paper acts as a commentary on the paper “Self‐reflexivity scrutinized: (pro‐)feminist men learning that gender matters” (Styhre and Tienari, 2013).Design/methodology/approachThe following discussion seeks to build on Styhre and Tienari's argumentation and points to arguments of agreement and disagreement.FindingsFirst, the authors argue that while self‐reflexivity cannot be fully taken into account it would be detrimental to social change to restrict it to accidental, haphazard happenings. Second, they argue that perhaps Styhre and Tienari do not always take self‐reflexivity far enough. In order to increase our understanding of why particular kinds of structural hierarchies take place in academia, it is important to locate these incidents within a system of practices that contribute to the marginalisation/privileging of certain groups of people.Practical implicationsThe authors further see it as a researcher's moral obligation to at least attempt to overcome the identity‐related, cultural, political and structural conditions that make self‐reflexivity difficult, tiresome and emotionally constraining. We should encourage ourselves to have an ongoing conversation with our whole self about what we are experiencing as we are experiencing it, not only after a critical incident has taken place.Originality/valueIn conclusion, the authors are more inclined to argue along the lines of Alvessonet al., who see reflexivity as a skill or capacity that can be developed, while remaining in consensus with Styhre and Tienari that it can never be fully under the control of the researcher or practitioner.
Classification of human resources based on measurement of tacit knowledge
Authors: Jafari Mostafa , Akhavan Peyman , Nourizadeh Mozhden 
Published: April 2013

PurposeThe purpose of this paper is to investigate employees of an organization in order to evaluate and classify them based on their tacit knowledge. Therefore, in this paper, staff's tacit knowledge is measured at the individual level, in automotive sector.Design/methodology/approachRepertory grid technique has been used as a mechanism to aid the elicitation and evaluation of individuals’ personal constructs. Then, Pathfinder analysis was carried out to examine the individual's knowledge structure. The similarities between knowledge structure of expert and novice was measured by the set‐theoretic index C, in order to classify staff and ultimately, for analysis of each group, Idiogrid software was used.FindingsBased on closeness index, all employees were classified into four categories. Respondent's perceptions were evaluated by comparing the mental model graphs of the individuals in different categories with experts’ graphs. Ultimately, the best or the most effective HR practices were determined for managing knowledge workers.Research limitations/implicationsThis study may help HRM department to differentiate between low and high‐performing employees for determining the most effective HR practices to manage staff. Furthermore, it has significant implications in team building and designing a knowledge map within organizations.Originality/valueThis paper reveals effective linkages between human resource management and knowledge management.
Application of grey linear control theory for price regulation in China's real estate market
Authors: Wang Zheng‐Xin 
Published: April 2013

PurposeThe purpose of this paper is to propose a grey linear control system for regulating the price of China's real estate and provide the necessary support to assist the relevant management departments with their policy making.Design/methodology/approachA grey state equation of the real estate market price that can reflect both the market supply‐demand price mechanism and the production price mechanism is proposed based on the economic cybernetics. Also, the grey control linear theory is used to demonstrate the disequilibrium fluctuation control system for the China's real estate market with uncertain parameters.FindingsThe price disequilibrium fluctuation control system for China's real estate market has been in a critical state. The system would reach a balanced state in 2013, if the real estate price in 2010 and 2011 firstly decreased 244.41 yuan/m2 and 62.33 yuan/m2, respectively, and then increased 60.88 yuan/m2 in 2012. The disequilibrium state will continue for years before it reaches a balanced state.Research limitations/implicationsDue to the complexity of operation of grey numbers, the present technique still cannot analyze the properties of the grey control system exactly and further research is needed.Practical implicationsThe modelled results can help the relevant management departments steady China's real estate market by price regulation.Originality/valueA new approach to study the price regulation system of a real estate market is proposed based on grey linear control theory.
Towards compatibility between artificial and psychometric personality models
Authors: Kadri Faisal L. 
Published: April 2013

PurposeThe purpose of this paper is to investigate the statistical link between an artificial personality model and the leading psychometric model.Design/methodology/approachAn online survey was conducted made of two parts: a 40‐sentence humor appreciation survey corresponding to the artificial personality model, and a 50‐sentence Big 5 psychometric survey. The cross‐correlation between the scales of the two parts was computed, and exploratory factor analysis performed on the Big 5 scores using three different sample age spreads.FindingsThe cross‐correlation coefficients between the artificial and psychometric personality scores supported the suggestion that there is compatibility between the two, albeit their absolute values were not as high as other studies due to the small sample size. Also, when computing factor analysis on Big 5 scores it was found that the loading of two factors identified as motivational went down systematically with the size of the sample, which empirically supports the suggestion that motivational and cognitive factors are distinct.Research limitations/implicationsThe size of sample was not sufficient to reach a conclusive decision but the evidence was supportive and promising for additional research.Practical implicationsThe compatibility between the artificial and psychometric personality models means that psychometric scores of real persons can be uploaded into artificial personalities in order to mimic real conversation and behaviour.Social implicationsImprovement of man‐machine interface, facilitating education.Originality/valueCorrelating the scores of different personality scores is not new, but correlating with artificial personality dimensions defined by humor appreciation scores is new. The suggestion that there is qualitative difference between factors of well established psychometric model is new and could have far reaching implications.
Uncovering the intellectual development of the Journal of Organizational Change Management
Authors: Giraud Laurent , Autissier David 
Published: April 2013

PurposeThe purpose of this study is to identify the documents which have had the greatest impact on the Journal of Organizational Change Management (JOCM) articles and to analyze the evolution of the intellectual structure of the journal.Design/methodology/approachA knowledge‐stock analysis is performed to assess major trends of the JOCM. A bibliometric study is then conducted thanks to citation and co‐citation analysis about the documents which are the most cited by the articles published in the JOCM (between 1995 and 2011).FindingsThrough the results of their analysis, the authors: describe the growing stock of knowledge of the JOCM over time; identify the documents having the strongest influence on the JOCM articles; and pinpoint the evolution of the intellectual structure of the journal.Research limitations/implicationsAlthough the sample of retained articles seems representative of the JOCM publication efforts, the data set presents some limitations. There are also some limits inherent to the research design and to the bibliometric methods. The intention of the present research is to give a quantitative overview of the intellectual evolution of the journal.Practical implicationsGrasping the intellectual development of the JOCM enables researchers and practitioners to better understand how issues are being approached by authors who publish in this journal. It also stimulates the scholarly debate.Originality/valueThis knowledge‐stock and bibliometric study is the first to be concerned with the JOCM.
Making and breaking sense: an inquiry into the reputation change
Authors: Aula Pekka , Mantere Saku 
Published: April 2013

PurposeThe purpose of this paper is to expand knowledge of reputation change as a social process and to explore the implications of a social constructivist view of reputation for the challenge of reputation management.Design/methodology/approachThe authors analyze the main characteristics of a social constructivist view of reputation, and study its implications for the task of reputation management by means of an interpretative arena model of reputation change.FindingsThe authors build a framework for analyzing reputation change as dialogical interaction between an organization and active stakeholders.Practical implicationsThe arena model is a tool for analyzing the task of corporate reputation change management across a variety of contexts. The arena model provides a conceptual tool for making sense of the crucial and intricate challenge of strategic reputation management, which places organizations engaging in struggles and collaborations with the stakeholders in symbolic environments.Originality/valueThe arena model is the first framework seeking to bridge the theoretical challenge of social constructivism with the managerial task of reputation change.