bluuebunny/crossref_metadata_2025 huggingface dataset:
The Impact of the Madden–Julian Oscillation on High-Latitude Winter Blocking during El Niño–Southern Oscillation Events
Authors: Henderson Stephanie A. , Maloney Eric D.
Published: April 2018

Wintertime high-latitude blocking is associated with persistent changes in temperature and precipitation over much of the Northern Hemisphere. Studies have shown that the Madden–Julian oscillation (MJO), the primary form of intraseasonal tropical variability, significantly modulates the frequency of high-latitude blocking through large-scale Rossby waves that alter the global circulation. However, the characteristics of MJO teleconnections are altered by El Niño–Southern Oscillation (ENSO), which modifies the global flow on interannual time scales, suggesting that the MJO influence on blocking may depend on the ENSO phase. The characteristics of MJO Rossby waves and blocking during ENSO events are examined using composite analysis and a nonlinear baroclinic model. The ENSO phase-dependent teleconnection patterns are found to significantly impact Pacific and Atlantic high-latitude blocking. During El Niño, a significant persistent increase in Pacific and Atlantic blocking follows the real-time multivariate MJO (RMM) phase 7, characterized by anomalous enhanced tropical convection over the East Indian Ocean and suppressed west Pacific convection. The maximum Atlantic blocking increase is triple the climatological winter mean. Results suggest that the MJO provides the initial dipole anomaly associated with the Atlantic blocking increase, and transient eddy activity aids in its persistence. However, during La Niña significant blocking anomalies are primarily observed during the first half of an MJO event. Significant suppression of Pacific and Atlantic blocking follows RMM phase 3, when east Indian Ocean MJO convection is suppressed and west Pacific convection is enhanced. The physical basis for these results is explained.
Near-Global Covariability of Hourly Precipitation in Space and Time
Authors: Trenberth Kevin E. , Zhang Yongxin
Published: April 2018

A detailed analysis of hourly precipitation from 60°N to 60°S for the covariability is performed at 0.25° resolution using the new CMORPH dataset. For all points, correlations are computed with surrounding points both concurrently and for various leads and lags up to a day. Results are more coherent over the oceans than land; the contours of constant correlation tend to be elliptical, oriented northeast–southwest in the northern extratropics and southeast–northwest in the southern extratropics. An ellipse is fitted to the correlation pattern, and major and minor axis vectors and eccentricity are mapped. Based upon both the isotropic correlations and ellipse, points are allocated to one of 20 clusters, and 16 are documented. Over the main extratropical ocean storm tracks, correlations exceed 0.8 for points 50 km distant and fall to about 0.3 at about 5° radius. In the tropics values drop to 0.65 within 50 km and 0.2 at 5° radius. Over land, values are lower in summer and drop to 0.1 at 5° radius. Decorrelation e-folding distances range from less than 50 km over land to 200 km over extratropical ocean storm tracks. The movement of precipitation is compared with mean atmospheric winds. The lead–lag relationships indicate movement of systems but reveal the relatively short lifetimes of precipitation, of less than 12 h, even taking movement into account. The orientation of the ellipse reflects the structures of rain phenomena (fronts, etc.) rather than movement. These statistics demonstrate that daily averages fail to capture the essential character of precipitation.
Observations of the Tasman Sea Internal Tide Beam
Authors: Waterhouse Amy F. , Kelly Samuel M. , Zhao Zhongxiang , MacKinnon Jennifer A. , Nash Jonathan D. , Simmons Harper , Brahznikov Dmitry , Rainville Luc , Alford Matthew , Pinkel Rob
Published: April 2018

Low-mode internal tides, a dominant part of the internal wave spectrum, carry energy over large distances, yet the ultimate fate of this energy is unknown. Internal tides in the Tasman Sea are generated at Macquarie Ridge, south of New Zealand, and propagate northwest as a focused beam before impinging on the Tasmanian continental slope. In situ observations from the Tasman Sea capture synoptic measurements of the incident semidiurnal mode-1 internal-tide, which has an observed wavelength of 183 km and surface displacement of approximately 1 cm. Plane-wave fits to in situ and altimetric estimates of surface displacement agree to within a measurement uncertainty of 0.3 cm, which is the same order of magnitude as the nonstationary (not phase locked) mode-1 tide observed over a 40-day mooring deployment. Stationary energy flux, estimated from a plane-wave fit to the in situ observations, is directed toward Tasmania with a magnitude of 3.4 ± 1.4 kW m−1, consistent with a satellite estimate of 3.9 ± 2.2 kW m−1. Approximately 90% of the time-mean energy flux is due to the stationary tide. However, nonstationary velocity and pressure, which are typically 1/4 the amplitude of the stationary components, sometimes lead to instantaneous energy fluxes that are double or half of the stationary energy flux, overwhelming any spring–neap variability. Despite strong winds and intermittent near-inertial currents, the parameterized turbulent-kinetic-energy dissipation rate is small (i.e., 10−10W kg−1) below the near surface and observations of mode-1 internal tide energy-flux convergence are indistinguishable from zero (i.e., the confidence intervals include zero), indicating little decay of the mode-1 internal tide within the Tasman Sea.
Impact of Enhanced Atmospheric Motion Vectors on HWRF Hurricane Analyses and Forecasts with Different Data Assimilation Configurations
Authors: Zhang Shixuan , Pu Zhaoxia , Velden Christopher
Published: April 2018

The impacts of enhanced satellite-derived atmospheric motion vectors (AMVs) on the numerical prediction of intensity changes during Hurricanes Gonzalo (2014) and Joaquin (2015) are examined. Enhanced AMVs benefit from special data-processing strategies and are examined for impact on model forecasts via assimilation experiments by employing the National Centers for Environmental Prediction (NCEP) operational Hurricane Weather Research and Forecasting (HWRF) Model using a Gridpoint Statistical Interpolation analysis system (GSI)-based ensemble–variational hybrid system. Two different data assimilation (DA) configurations, one with and one without the use of vortex initialization (VI), are compared. It is found that the assimilation of enhanced AMVs can improve the HWRF track and intensity forecasts of Gonzalo and Joaquin during their intensity change phases. The degree of data impact depends on the DA configuration used. Overall, assimilation of enhanced AMVs in the innermost domain (e.g., storm inner-core region and its immediate vicinity) outperforms other DA configurations, both with and without VI, as it results in better track and intensity forecasts. Compared to the experiment with VI, assimilation of enhanced AMVs without VI reveals more notable data impact on the forecasts of Hurricane Gonzalo, as the VI before DA alters the first guess and reduces the actual number of AMV observations assimilated into the DA system. Even with VI, assimilation of enhanced AMVs in the inner-core region can at least partially mitigate the negative effect of VI on the intensity forecast of Hurricane Gonzalo and alleviate the unrealistic vortex weakening in the simulation by removing unrealistic outflow structure and unfavorable thermodynamic conditions, thus leading to improved intensity forecasts.
Improving NCEP HWRF Simulations of Surface Wind and Inflow Angle in the Eyewall Area
Authors: Wang Weiguo , Sippel Jason A. , Abarca Sergio , Zhu Lin , Liu Bin , Zhang Zhan , Mehra Avichal , Tallapragada Vijay
Published: April 2018

This note describes a modification of the boundary layer parameterization scheme in the Hurricane Weather Research and Forecasting (HWRF) Model, which improves the simulations of low-level wind and surface inflow angle in the eyewall area and has been implemented in the HWRF system and used in the operational system since 2016. The modification is on an observation-based adjustment of eddy diffusivity previously implemented in the model. It is needed because the previous adjustment resulted in a discontinuity in the vertical distribution of eddy diffusivity near the surface-layer top, which increases the friction within the surface layer and compromises the surface-layer constant-flux assumption. The discontinuity affects the simulation of storm intensity and intensification, one of the main metrics of model performance, particularly in strong tropical cyclones. This issue is addressed by introducing a height-dependent adjustment so that the vertical profile of eddy diffusivity is continuous throughout the boundary layer. It is shown that the implementation of the modification results in low-level winds and surface inflow angles in the storm’s eyewall region closer to observations.
Leading Data Conversation Moves: Toward Data-Informed Leadership for Equity and Learning
Authors: Park Vicki
Published: April 2018

Purpose: The purpose of this article is to examine the data conversation moves enacted by leaders and to bridge organizational leadership for equity and data-informed decision making to practice. I argue that data discussion moves with the purpose of improving equity and learning must reflect core tenets of organizational leadership for equity—specifically eliminating deficit thinking and focusing on inquiry for improvement. Research Method: I employ case study methods to explore how data use routines and discussion moves unfold in context. The analysis for this article stems from data collected over a 2-year period at an elementary school, consisting of 106.5 hours of observation, 25 semistructured interviews, and document reviews. Analysis was an iterative process, beginning with holistic case studies, open coding, and then a focused coding that lead to a finalized typology of data conversation moves. Findings: Leaders engaged in data conversation moves that invited an inquiry stance and a strength-based approach to understanding how student data could inform instructional improvement and support, such as (a) Triangulating, (b) Reframing Deficit Thinking to Building on Student Learning Assets, (c) Pedagogical Linking and Student-Centered Positioning, and (d) Extending. Implications: This study contributes to the growing body of research that examines the micro-processes of data use practice by honing in on conversation moves that educators engage in to shift discussion toward student learning and professional inquiry. The findings highlight how data use for inquiry, learning, and equity requires leadership practices that forge capacity building routines with facilitation of data conversation moves.
Conflict and Organization Studies
Authors: Contu Alessia
Published: April 2018

What is the relation between conflict and organization studies? Is conflict theorized today and, if so, how? I look first at what students of management are taught about organizational conflict – the knowledge imparted to them, its assumptions and ethico-political consequences. By reactivating Mary Follett’s insight of conflict as ‘differences in the world’ I consider more broadly how organization studies, with its different theoretical apparatuses, treats conflict and in so doing participates in the co-constitution of the social order: what it means to work, to organize and to live specific ways of life. Organization studies attempts to domesticate conflict by reference to a fundamental fantasy that modulates, controls and stabilizes differences. Harmonious fantasies in the ‘functionalist perspective’ and the ‘behavioural theory of the firm’ are discussed. Special attention is paid to the ‘organizational economic perspective’ with its economist fantasy for the part it has played in cementing our contemporary hegemonic market governance. At present, cracks in the market governance are becoming glaring and differences are emerging that the specific apparatus of conflict domestication is struggling to accommodate. I suggest that organizational theorists rethink the theorizing apparatus of organization studies, and consider taking on a form of theorizing called ‘demiurgic theorizing’. This forwards a type of knowledge production that puts differences at centre stage and faces up to the contemporary conflict demands of our time with responsibility and accountability.
Laboratory test investigations on soil water characteristic curve and air permeability of municipal solid waste
Authors: Shi Jianyong , Wu Xun , Ai Yingbo , Zhang Zhen
Published: April 2018

The air permeability coefficient has a high correlation with the water content of municipal solid waste. In this study, continuous drying methodology using a tension meter was employed to construct the soil water characteristic curve of municipal solid waste (M-SWCC). The municipal solid waste air permeability test was conducted by a newly designed apparatus. The measured M-SWCC was well reproduced by the van Genuchten (V-G) model and was used to predict the parameters of typical points in M-SWCC, including saturated water content, field capacity, residual water content and water content at the inflection point. It was found that the M-SWCC was significantly influenced by void ratio. The final evaporation and test period of M-SWCC increase with the increase in void ratio of municipal solid waste. The evolution of air permeability coefficient with water content of municipal solid waste depicted three distinct characteristic stages. It was observed that the water contents that corresponded to the two cut-off points of the three stages were residual water content and water content at the inflection point, respectively. The air permeability coefficient of municipal solid waste decreased with the increase of the water content from zero to the residual water content. The air permeability coefficient was almost invariable when the water content increased from residual water content to the water content at the inflection point. When the water content of municipal solid waste exceeded the water content at the inflection point, the air permeability coefficient sharply decreased with the increase of water content.
Evaluation and prediction of blast-induced peak particle velocity using artificial neural network: A case study
Authors: Ragam Prashanth , Nimaje Devidas Sahebraoji
Published: April 2018

Over the past few decades, inducing of ground vibrations from blasting may cause severe damage to surrounding structures, plants, and human beings in the mining industry. Therefore, it is essential to monitor and predict the ambiguous vibration levels and take measures to reduce their hazardous effect. In this study, to evaluate and predict the ambiguous ground vibrations, an application of artificial neural network technique was used. A three-layer, feed-forward back-propagation multilayer perception neural network having six input parameters, the distance from blast face, maximum charge per delay, spacing, burden, hole depth and a number of holes, and one output: peak particle velocity, was used and trained with the Levenberg–Marquardt algorithm using 25 experimental and blast event records from the iron ore mine A, India. To determine the efficiency and accuracy of the developed artificial neural network model, seven conventional predictor models proposed by the US Bureau of Mines, Ambraseys–Hendron, Langefors–Kihlstrom, general predictor, Ghosh–Daemen predictor, cardiac magnetic resonance imaging (CMRI) predictor, Bureau of Indian Standards, as well as multiple linear regression, were applied to establish a relation between peak particle velocity and its influencing parameters. The obtained results reveal that the proposed artificial neural network model can estimate ground vibrations more accurately as compared with the various conventional predictor models available. Coefficient of determination (R2) and root mean square error indices were obtained as 0.9971 and 0.08133 for artificial neural network model, respectively.
Towards business improvement districts in Denmark: Translating a neoliberal urban intervention model into the Nordic context
Authors: Richner Martin , Olesen Kristian
Published: April 2018

This paper investigates how business improvement districts (BIDs) are translated into a Danish context. Drawing on a theoretical framework that combines the concepts of travelling ideas, mobile urbanism and neoliberalisation, this paper explores how an actor-network is being constructed to mobilise support for a BID pilot scheme in Denmark. The introduction of BID-inspired concepts in Denmark represents an illustrative case of how mobile urban policies are translated into local contexts as part of continuous processes of neoliberalisation of urban governance and policy-making. In Denmark, the BID model is promoted as a market-based planning tool to support progressive planning goals of supporting town centres as vibrant commercial centres. Furthermore, the BID concept is, among Danish planners, perceived as a useful organisational framework for the construction of public–private partnerships as add-ons to area-based renewal initiatives in order to strengthen local community support. Such interpretations are not only in stark contrast to BIDs implemented elsewhere, but also require a significant reconfiguration of the model to fit local needs. However, despite the strong social focus, the potential negative consequences of implementing BIDs, such as privatisation and commodification of public space, are barely discussed in the current initial stage of translating the BID model into a Danish context. This raises serious concerns about to what extent planners in Denmark unreflectively are copying a policy concept from elsewhere, with little regard to how the concept should be adapted and what it has to offer in a Danish context.
A comparative analysis (real-time data and theoretical results) for propagation of SH waves in a viscoelastic model influenced by a point source
Authors: Gupta Shishir , Smita  , Pramanik Snehamoy , Pramanik Abhijit
Published: April 2018

The propagation of SH waves in a heterogeneous viscoelastic layer lying over a heterogeneous viscoelastic half space from a point source is examined analytically. The significance of the heterogeneity of hyperbolic and exponential variations associated with rigidity, viscosity, and density is investigated mathematically. A dispersion equation and displacement components are computed in a compact form, considering the case that displacement and stress are continuous at the interface and stress vanishes on a free surface. The acquired dispersion equation signifies the relation between phase velocity and dimensionless wavenumber. The dispersion equation is highly influenced by heterogeneous parameters of both the layer and the half space. The dispersion equation is reduced to the classical equation of the Love wave after eliminating all the heterogeneous parameters, in agreement with pre-established results. The analysis uses the technique of Fourier transformation and Green’s function. The wavenumber is supposed to be complex, as the frequency is fixed in the viscoelastic model. Graphs are presented to demonstrate the effect of heterogeneous parameters on phase and damping velocity with respect to wavenumber.
Music teachers’ lives and the micropolitical landscape of schools
Authors: Conway Colleen , Hibbard Shannan
Published: April 2018

The purpose of this study was to examine how four experienced music teachers describe their navigation of the micropolitical landscape in their schools. Research questions included: (a) How do the teacher participants describe their strategies used to navigate the political, contextual, and interpersonal landscape of their schools and school communities?, and (b) How do participants perceive the influence of the micropolitical landscape on their own workplace experiences as well as the classroom experiences of their students? Drawing from case study and narrative design frameworks, the study data included an email survey, an observation of each teacher, two individual interviews with each teacher, an interview with the school principal for each teacher and a focus group interview with teachers at the end of the project. Findings highlight the purposeful nature of experienced teacher micropolitical interactions.
Discrepancies between subjective perception and waist-to-height ratio measurement of obesity, and their policy implications
Authors: Lee Yong-Woo
Published: April 2018

In social sciences, researchers rely on subjective perceptions of obesity measures to examine the determinants of obesity and the likely effects of obesity on health outcomes. However, subjective perception tends to produce estimation biases. In this study, we investigated the misreporting behavior of individuals regarding obesity using waist-to-height ratio as an objective measurement of obesity. Using the Korean National Health and Nutrition Examination Survey for 2008–2011, we showed that false-reporting behavior was significantly associated with socio-economic status. Furthermore, we presented that subjective perception of obesity yielded misleading estimates in both the determinants and the consequences of obesity.
The daily digital practice as a form of self-care: Using photography for everyday well-being
Authors: Brewster Liz , Cox Andrew M
Published: April 2018

Interest in the connection between involvement in digital communities and well-being has increased as these communities become more commonplace. Specific models of interaction that affect well-being have emerged; here, we examine one of those models, termed ‘digital daily practice’. Digital daily practices involve a commitment to doing one thing – exercise, photography and writing – every day and sharing it online. Participants in these practices agree that they provide an unexpected benefit of improving well-being. This article makes an in-depth examination of one digital daily practice, photo-a-day, using a practice theory framework to understand the affordances it offers for well-being. We engage with the literature on well-being and self-care, critiquing its presentation of well-being as an individual trait. We present data from an ethnographic study including interviews and observations to highlight how photo-a-day as a practice functions as self-care and how communities are formed around it. Photo-a-day is not a simple and uncomplicated practice; rather it is the complex affordances and variance within the practice that relate it to well-being. We conclude that this practice has multi-faceted benefits for improving well-being.
‘You really have to have a thick skin’: A cross-cultural perspective on how online harassment influences female journalists
Authors: Chen Gina Masullo , Pain Paromita , Chen Victoria Y , Mekelburg Madlin , Springer Nina , Troger Franziska
Published: April 2018

In-depth interviews with 75 female journalists who work or have worked in Germany, India, Taiwan, the United Kingdom, and the United States of America reveal that they face rampant online gendered harassment that influences how they do their jobs. Many of the women report that if they aim to engage with their audience online – which is a job requirement for many of them – they frequently face sexist comments that criticize, attack, marginalize, stereotype, or threaten them based on their gender or sexuality. Often, criticism of their work is framed as misogynistic attacks and, sometimes, even involves sexual violence. The journalists have developed a variety of strategies for dealing with the abuse, including limiting what they post online, changing what stories they report on, and using technological tools to prevent people from posting offensive words on the journalists’ public social media pages. Results show that this harassment disrupts the routinized practice of reciprocal journalism because it limits how much these women can interact with the audience in mutually beneficial ways without being attacked or undermined sexually. While experiences of harassment were consistent across the countries studied, cultural differences were evident in how much the journalists were expected to engage online. Results are discussed in relation to the hierarchy of influences model that aims to explain how multiple forces influence media content.
Modeling and simulation of a two-shaft gas turbine propulsion system containing a frictional plate–type clutch
Authors: Montazeri-Gh Morteza , Miran Fashandi Seyed Alireza
Published: April 2018

A marine propulsion system is composed of several sub-systems that operate in a variety of energy fields. The propulsion power of a ship can be provided from a two-shaft gas turbine. In this article, the modeling of a two-shaft gas turbine and its associated sub-systems including gears, flexible couplings and clutch is considered. These components are connected in the form of a virtual marine propulsion system, which is based on the bond-graph approach. When a clutch is used in a propulsion system, discontinuities occur in the describing model, which leads to some challenging problems when performing computer simulations. The two main difficulties are the numerical stiffness and the variable model structure. In this research, the bond-graph method is adapted as the modeling framework in order to allow a constant system structure model that minimizes the stiffness problem. Next, simulation results of a two-shaft gas turbine are presented in the off-design condition and verified with experimental tests. These results demonstrate the acceptable accuracy of computer simulations. Also, the effects of clutch performance on the dynamics of the marine propulsion system are discussed.
A new workflow to improve the carbonate reservoir types discrimination combing the empirical model decomposition and energy entropy classification methods
Authors: Fan Zhuoying , Hou Jiagen , Lin Chengyan , Ge Xinmin
Published: April 2018

Classification and well-logging evaluation of carbonate reservoir rock is very difficult. On one side, there are many reservoir pore spaces developed in carbonate reservoirs, including large karst caves, dissolved pores, fractures, intergranular dissolved pores, intragranular dissolved pores, and micropores. On the other side, conventional well-logging response characteristics of the various pore systems can be similar, making it difficult to identify the type of pore systems. We have developed a new reservoir rock-type characterization workflow. First, outcrop observations, cores, well logs, and multiscale data were used to clarify the carbonate reservoir types in the Ordovician carbonates of the Tahe Oilfield. Three reservoir rock types were divided based on outcrop, core observation, and thin section analysis. Microscopic and macroscopic characteristics of various rock types and their corresponding well-log responses were evaluated. Second, conventional well-log data were decomposed into multiple band sets of intrinsic mode functions using empirical mode decomposition method. The energy entropy of each log curve was then investigated. Based on the decomposition results, the characteristics of each reservoir type were summarized. Finally, by using the Fisher discriminant, the rock types of the carbonate reservoirs could be identified reliably. Comparing with conventional rock type identification methods based on conventional well-log responses only, the new workflow proposed in this paper can effectively cluster data within each rock types and increase the accuracy of reservoir type-based hydrocarbon production prediction. The workflow was applied to 213 reservoir intervals from 146 wells in the Tahe Oilfield. The results can improve the accuracy of oil-production interval prediction using well logs over conventional methods.
Breast Cancer Family History and Contralateral Breast Cancer Risk in Young Women: An Update From the Women’s Environmental Cancer and Radiation Epidemiology Study
Authors: Reiner Anne S. , Sisti Julia , John Esther M. , Lynch Charles F. , Brooks Jennifer D. , Mellemkjær Lene , Boice John D. , Knight Julia A. , Concannon Patrick , Capanu Marinela , Tischkowitz Marc , Robson Mark , Liang Xiaolin , Woods Meghan , Conti David V. , Duggan David , Shore Roy , Stram Daniel O. , Thomas Duncan C. , Malone Kathleen E. , Bernstein Leslie ,   The WECARE Study Collaborative Group, Bernstein Jonine L.
Published: April 2018

Purpose

The Women’s Environmental Cancer and Radiation Epidemiology (WECARE) study demonstrated the importance of breast cancer family history on contralateral breast cancer (CBC) risk, even for noncarriers of deleterious BRCA1/2 mutations. With the completion of WECARE II, updated risk estimates are reported. Additional analyses that exclude women negative for deleterious mutations in ATM, CHEK2*1100delC, and PALB2 were performed.

Patients and Methods

The WECARE Study is a population-based case-control study that compared 1,521 CBC cases with 2,212 individually matched unilateral breast cancer (UBC) controls. Participants were younger than age 55 years when diagnosed with a first invasive breast cancer between 1985 and 2008. Women were interviewed about breast cancer risk factors, including family history. A subset of women was screened for deleterious mutations in BRCA1/2, ATM, CHEK2*1100delC, and PALB2. Rate ratios (RRs) were estimated using multivariable conditional logistic regression. Cumulative absolute risks (ARs) were estimated by combining RRs from the WECARE Study and population-based SEER*Stat cancer incidence data.

Results

Women with any first-degree relative with breast cancer had a 10-year AR of 8.1% for CBC (95% CI, 6.7% to 9.8%). Risks also were increased if the relative was diagnosed at an age younger than 40 years (10-year AR, 13.5%; 95% CI, 8.8% to 20.8%) or with CBC (10-year AR, 14.1%; 95% CI, 9.5% to 20.7%). These risks are comparable with those seen in BRCA1/2 deleterious mutation carriers (10-year AR, 18.4%; 95% CI, 16.0% to 21.3%). In the subset of women who tested negative for deleterious mutations in BRCA1/2, ATM, CHEK2*1100delC, and PALB2, estimates were unchanged. Adjustment for known breast cancer single-nucleotide polymorphisms did not affect estimates.

Conclusion

Breast cancer family history confers a high CBC risk, even after excluding women with deleterious mutations. Clinicians are urged to use detailed family histories to guide treatment and future screening decisions for young women with breast cancer.
Conditions of the Present
Authors: Barrett Lindon
Published: April 2018

Conditions of the Present collects essays by the late Lindon Barrett, whose scholarship centers African American literature as a site from which to theorize race and liberation in the United States. Barrett confronts critical blind spots within both academic and popular discourse, offering readings of cultural and literary texts that transcend institutional divides and the gulf between academia and the street. Whether analyzing autobiographies by Lucy Delaney or Langston Hughes, hip-hop eulogies, or the formation of U.S. nationalist discourse, Barrett interrogates the mechanisms that shape social and subjective structures and that grant certain people power while withholding it from others. Deploying Marxist, psychoanalytic, feminist, and queer theories, Barrett explicates the interrelationship of desire and subjection to expose the violence and coercion embedded in narratives of "progress." Ultimately, this collection emphasizes Lindon Barrett's vital and enduring contribution to African American studies.
 Contributors. Elizabeth Alexander, Jennifer DeVere Brody, Daphne A. Brooks, Linh U. Hua, Janet Neary, Marlon B. Ross, Robyn Wiegman
Considering Emma Goldman
Authors: Hemmings Clare
Published: April 2018

In Considering Emma Goldman Clare Hemmings examines the significance of the anarchist activist and thinker for contemporary feminist politics. Rather than attempting to resolve the tensions and problems that Goldman's thinking about race, gender, and sexuality pose for feminist thought, Hemmings embraces them, finding them to be helpful in formulating a new queer feminist praxis. Mining three overlapping archives—Goldman's own writings, her historical and theoretical legacy, and an imaginative archive that responds creatively to gaps in those archives —Hemmings shows how serious engagement with Goldman's political ambivalences opens up larger questions surrounding feminist historiography, affect, fantasy, and knowledge production. Moreover, she explores her personal affinity for Goldman to illuminate the role that affective investment plays in shaping feminist storytelling. By considering Goldman in all her contradictions and complexity, Hemmings presents a queer feminist response to the ambivalences that also saturate contemporary queer feminist race theories.
Television Cities
Authors: Brunsdon Charlotte
Published: April 2018

In Television Cities Charlotte Brunsdon traces television's representations of metropolitan spaces to show how they reflect the medium's history and evolution, thereby challenging the prevalent assumptions about television as quintessentially suburban. Brunsdon shows how the BBC's presentation of 1960s Paris in the detective series Maigret signals British culture's engagement with twentieth-century modernity and continental Europe, while various portrayals of London—ranging from Dickens adaptations to the 1950s nostalgia of Call the Midwife—demonstrate Britain's complicated transition from Victorian metropole to postcolonial social democracy. Finally, an analysis of The Wire’s acclaimed examination of Baltimore, marks the profound shifts in the ways television is now made and consumed. Illuminating the myriad factors that make television cities, Brunsdon complicates our understanding of how television shapes perceptions of urban spaces, both familiar and unknown.
On Site, In Sound
Authors: Dorr Kirstie A.
Published: April 2018

In On Site, In Sound Kirstie A. Dorr examines the spatiality of sound and the ways in which the sonic is bound up in perceptions and constructions of geographic space. Focusing on the hemispheric circulation of South American musical cultures, Dorr shows how sonic production and spatial formation are mutually constitutive, thereby pointing to how people can use music and sound to challenge and transform dominant conceptions and configurations of place. Whether tracing how the evolution of the Peruvian folk song "El Condor Pasa" redefined the boundaries between national/international and rural/urban, or how a pan-Latin American performance center in San Francisco provided a venue through which to challenge gentrification, Dorr highlights how South American musicians and activists created new and alternative networks of cultural exchange and geopolitical belonging throughout the hemisphere. In linking geography with musical sound, Dorr demonstrates that place is more than the location where sound is produced and circulated; it is a constructed and contested domain through which social actors exert political influence.
A Primer for Teaching African History
Authors: Getz Trevor R.
Published: April 2018

A Primer for Teaching African History is a guide for college and high school teachers who are teaching African history for the first time, for experienced teachers who want to reinvigorate their courses, for those who are training future teachers to prepare their own syllabi, and for teachers who want to incorporate African history into their world history courses. Trevor R. Getz offers design principles aimed at facilitating a classroom experience that will help students navigate new knowledge, historical skills, ethical development, and worldviews. He foregrounds the importance of acknowledging and addressing student preconceptions about Africa, challenging chronological approaches to history, exploring identity and geography as ways to access historical African perspectives, and investigating the potential to engage in questions of ethics that studying African history provides. In his discussions of setting goals, pedagogy, assessment, and syllabus design, Getz draws readers into the process of thinking consciously and strategically about designing courses on African history that will challenge students to think critically about Africa and the discipline of history.
Enhancer identification and activity evaluation in the red flour beetle, Tribolium castaneum
Authors: Lai Yi-Ting , Deem Kevin D. , Borràs-Castells Ferran , Sambrani Nagraj , Rudolf Heike , Suryamohan Kushal , El-Sherif Ezzat , Halfon Marc S. , McKay Daniel J. , Tomoyasu Yoshinori
Published: April 2018

Evolution of cis-regulatory elements (such as enhancers) plays an important role in the production of diverse morphology. However, a mechanistic understanding is often limited by the absence of methods for studying enhancers in species other than established model systems. Here, we sought to establish methods to identify and test enhancer activity in the red flour beetle, Tribolium castaneum. To identify possible enhancer regions, we first obtained genome-wide chromatin profiles from various tissues and stages of Tribolium using FAIRE (formaldehyde-assisted isolation of regulatory elements)-sequencing. Comparison of these profiles revealed a distinct set of open chromatin regions in each tissue and at each stage. In addition, comparison of the FAIRE data with sets of computationally predicted (i.e. supervised cis-regulatory module-predicted) enhancers revealed a very high overlap between the two datasets. Second, using nubbin in the wing and hunchback in the embryo as case studies, we established the first universal reporter assay system that works in various contexts in Tribolium, and in a cross-species context. Together, these advances will facilitate investigation of cis-evolution and morphological diversity in Tribolium and other insects.
Entre o desencanto e a rebeldia
Authors: Paula Ana Paula Paes de
Published: April 2018

O estilo de vida das elites gerenciais vem contribuindo para a popularização dos cursos de Administração. No decorrer do aprendizado, porém, os estudantes mostram-se desencantados com os cursos e com a carreira, o que reproduz certo vazio existencial. A obra do pensador Herbert Marcuse oferece instrumentos para compreender essa angústia e demonstra que a frustração pode revelar um movimento positivo de rebeldia e questionamento.
Violência invisível
Authors: Heloani Roberto
Published: April 2018

Presente muitas vezes de forma imperceptível no ambiente de trabalho, o assédio moral é um tipo de violência que expõe as pessoas a situações ofensivas e humilhantes. De modo lento, porém progressivo, o assédio moral vai se traduzindo em sofrimento, dor e baixa produtividade. Os algozes corporativos costumam ser gestores autoritários, que abusam de seu poder e das situações de fragilidade de seus liderados. Identificar o fenômeno é um primeiro passo para combatê-lo.
Desenvolvendo a criatividade dos grupos de trabalho organizacionais
Authors: Thompson Leigh
Published: April 2018

A criatividade vem se destacando cada vez mais como uma característica imprescindível para equipes e indivíduos nos atuais ambientes de trabalho das empresas. Este artigo discute as principais dificuldades e obstáculos ao desenvolvimento da criatividade nas equipes de trabalho. Ao mesmo tempo, propõe diversas estratégias para superar tais obstáculos e desenvolver as condições para que as equipes, em vez de dificultarem a criatividade individual, a estimulem.
Trabalho em Krisis
Authors: Bendassolli Pedro Fernando , Freitas Maria Ester de , Betiol Maria Irene Stocco
Published: April 2018

Trabalho e emprego têm sido objeto de intensa discussão entre empresários, autoridades de governo e pesquisadores. Entre as diversas correntes de pensamento, uma destaca-se pela originalidade. Tal corrente,de verve crítica, advoga que o trabalho se tornou um deus pagão, e que sua centralidade na vida das pessoas deve ser questionada, revista e, talvez, abolida. Essa é a postura do grupo alemão formado em torno da revista Krisis, cujo expoente mais popular é o filósofo Robert Kurz.
Respeito em evidência
Authors: Paula Ana Paula Paes de
Published: April 2018

É possível a existência de respeito em uma sociedade formada por indivíduos tão desiguais e diferentes? Richard Sennett propõe, neste livro, uma reflexão sobre a centralidade do respeito na formação da identidade e de um relacionamento saudável, maduro e equilibrado com o outro nos dias de hoje.
Célia Cruz [entrevistada por Andréa Leite Rodrigues]
Authors: Cruz Célia
Published: April 2018

Célia Cruz é diretora da Ashoka Empreendedores Sociais, organização presente em 51 países que apóia indivíduos com idéias inovadoras, criatividade e determinação para provocar mudanças de grande impacto social. Economista formada pela FEA-USP e mestre em economia de empresas pela FGV-EAESP, Célia explica, nesta entrevista, o que a motivou a dedicar-se a esse tipo de atividade; trata também da evolução e das mudanças ocorridas nos últimos 10 anos no terceiro setor.
Espetáculo das raças
Authors: Jones Victoria
Published: April 2018

A segmentação do mercado em função de características raciais ainda é uma atividade incipiente no Brasil. Ao mesmo tempo em que a metade da população do país é formada por negros e mestiços, apenas uma pequena parcela dos modelos usados em propagandas representam essa população. Este artigo, desenvolvido a partir de uma pesquisa de campo, contradiz alguns pressupostos sobre preferências dos consumidores e sugere uma revisão de certas práticas de marketing.
O futuro da estratégia [entrevistado por Flávio Carvalho de Vasconcelos e Luiz Artur Ledur Brito]
Authors: Barney Jay
Published: April 2018

Jay Barney é considerado hoje uma das principais autoridades no estudo de estratégia. Professor de Administração na Ohio State University, é um dos criadores do conceito da “visão baseada em recursos” (RBV), pedra fundamental do campo. Durante a Terceira Conferência Internacional da Iberoamerican Academy of Management, ocorrida em São Paulo, o pesquisador concedeu esta entrevista à RAE-executivo, na qual fala sobre RBV e sua preocupação com a estratégia em contextos turbulentos.
Coaching revisitado
Authors: Guimarães Bruno Profeta
Published: April 2018

Coletânea destaca o papel do coaching como instrumento que desenvolve competências individuais e organizacionais. O livro apresenta uma série de usos dessa ferramenta em instante no qual as empresas se tornam sistemas cada vez mais complexos e os indivíduos são chamados a se responsabilizarem por suas carreiras.
Cultura da performance
Authors: Bendassolli Pedro Fernando
Published: April 2018

A idéia de que os indivíduos devem se tornar integralmente responsáveis por suas próprias carreiras, destino e sucesso é parte de um credo que está na origem de uma nova cultura empresarial. Nessa cultura, valores como empreendedorismo, iniciativa, performance e autonomia foram eleitos como essenciais para demarcar a linha entre sucesso e fracasso. Este artigo analisa os fundamentos desse credo e identifica algumas de suas principais conseqüências.
Marketing e cultura
Authors: Limeira Tania Maria Vidigal
Published: April 2018

As organizações culturais brasileiras sofrem do mesmo mal que aflige organizações de outros setores: a carência de uma gestão profissional e empreendedora. Dependentes dos recursos provenientes da iniciativa privada, tais organizações perderam o contato com seu público e com as técnicas básicas de gestão mercadológica. Este artigo mostra como essas organizações podem utilizar as ferramentas de marketing para identificar, atrair e reter seu público, garantindo assim a própria sobrevivência.
PENINGKATAN REAKTIVITAS SORBEN KALSIUM HIDROKSIDA DAN TANAH DIATOME (DE)
Authors: Hasyim Mariana
Published: April 2018

Gas hasil pembakaran sampah terdiri dari gas-gas yang berbahaya seperti SO2, HCL, CO, dan sebagainya.Teknologi penghilangan gas-gas berbahaya dapat dilakukan dengan menggunakan proses kering dan prosesbasah. Proses kering lebih ekonomis bila dibandingkan dengan proses basah. Kelemahan proses keringadalah konversi absorpsi dan efisiensi penyisihan gas relatif rendah. Salah satu cara mengatasi masalahtersebut adalah dengan menggunakan sorbent yang mempunyai reaktivitas tinggi. Penelitian ini bertujuanuntuk meningkatkan reaktivitas sorbent Ca(OH)2 dengan menggunakan tanah diatome (DE) sebagai sumbersilika. Reaksi antara SiO2 dengan Ca(OH)2 membentuk kalsium silikat hidrat (CaO.SiO2.2H2O) yangmempunyai porositas dan reaktivitas tinggi. Penelitian ini dilakukan dalam dua tahap, yaitu tahap persiapansorbent dan tahap uji reaktivitas sorbent. Persiapan sorbent dilakukan dalam reaktor batch denganmereaksikan Ca(OH)2 dan DE dengan 100 g air pada berbagai variasi rasio Ca(OH)2/DE dengan rasio beratfasa air/padatan sebesar 10. Uji reaktivitas sorbent dilakukan dengan menentukan daya serap sorbentterhadap methylene blue. Hasil penelitian menunjukkan bahwa densitas slurry dan berat sampel padatmeningkat setelah reaksi. Konversi reaksi meningkat dengan kenaikan temperatur reaksi, kecepatanpengaduk dan waktu reaksi. Konversi reaksi konstan setelah 20 menit. Temperatur reaksi 65oC menghasilkankonversi reaksi tertinggi dari variabel yang dilakukan. Hasil penelitian juga menunjukkan bahwa reaktifitassorbent Ca(OH)2/DE lebih tinggi dari sorbent Ca(OH)2.
IDENTIFIKASI TINGKAT BAHAYA EROSI BERBASIS SISTEM INFORMASI GEOGRAFIS (SIG) PADA SUB DAERAH ALIRAN SUNGAI (DAS) RIAM KANAN
Authors: Giyanti Fransisca Dwiputri , Riduan Rony , Aprilliantari Ranti
Published: April 2018

Salah satu faktor yang menyebabkan kondisi Sub DAS Riam Kanan di Kalimantan Selatan menjadi kritis adalah pembukaan lahan di sepanjang aliran sungai akibat penggunaan lahan oleh masyarakat yang tidak menerapkan teknik - teknik konservasi tanah yang tepat. Akibatnya fenomena kejadian banjir, tanah longsor, kekeringan dan pencemaran kualitas air akan meningkat apabila kondisi DAS tersebut tidak segera ditangani dengan upaya rehabilitasi lahan dan konservasi tanah. Tujuan penelitian ini untuk memetakan tingkat bahaya erosi di sepanjang Sun DAS Riam Kanan. Software ArcView GIS 3.3 adalah program yang berbasis SIG yang dirancang untuk mengumpulkan, menyimpan, dan menganalisa objek - objek serta fenomena - fenomena dimana lokasi geografis merupakan karakteristik yang penting untuk dianalisis sehingga dapat mempermudah proses visualisasi dan eksplorasi geografis dari data sekunder yang diperoleh khususnya dalam mengidentifikasi tingkat bahaya erosi pada wilayah studi Sub DAS Riam Kanan ini. Hasil penelitian menunjukan di sepanjang Sub DAS Riam Kanan teridentifikasi tingkat bahaya erosi kriteria ringan dengan luas 120.590,81 ha (73,19 %), kriteria sedang seluas 34.859,34 ha (21,16 %), dan kriteria sangat berat seluas 9318,00 ha (5,66 %).
KULTIVASI MIKROALGA HIJAU PADA SUMBER NITROGEN BERBEDA UNTUK EKSTRAKSI LIPIDA
Authors: Viena Vera
Published: April 2018

Mikroalga dikenal sebagai salah satu sumber utama penghasil bahan baku biodiesel untuk energy yang terbaharui karena kaya akan kandungan minyak. Penelitian ini mengkaji pengaruh Nitrogen dan metode ekstraksi terhadap kandungan lipida/minyak mikroalga hijau yang telah diaklimatisasi dalam limbah peternakan. Penelitian dilakukan dalam wadah kultivasi (fotobioreaktor) volume 2 L pada konsentrasi sumber Nitrogen berbeda (0 – 0,4 g/L KNO3). Selain itu juga diteliti keefektifan dua metode ekstraksi (Bligh – Dyer, dan Bligh – Dyer Modifikasi) untuk memperoleh minyak alga semaksimal mungkin. Hasil penelitian menunjukkan penambahan sumber Nitrogen yang berbeda pada kultivasi mikroalga yang telah di aklimatisasi memberikan kenaikan jumlah kandungan biomassa yang signifikan daripada yang tidak ditambahkan sumber nitrogen (kontrol). Sebaliknya kandungan lipid/minyak alga semakin menurun dengan tingginya kandungan sumber  nitrogen dalam biomassa alga. Penggunaan dua metode ekstraksi berbeda tidak berpengaruh signifikan terhadap kandungan total lipida/minyak dari mikroalga. Hasil analisa GC-MS pada total lipida mikroalga menunjukkan komposisi terbesar berupa n-heksadecanoic acid (asam palmitat), octadecanoic acid (asam stearat) dan 9-(Z) octadecenoic acid (asam oleat), yang dapat berpotensi sebagai bahan baku biodiesel.