bluuebunny/crossref_metadata_2025 huggingface dataset:
Quantifying the thickness of each color material in multilayer transparent specimen based on transmission image
Authors: Chen Lijun , Shen Hua , Wang Fumei
Published: May 2020

Combing the color transmission image and the Beer–Lambert law shows a great application prospect in quantifying each material in multilayer specimen. Here, a novel, low-cost, and efficient optical algorithm is proposed to predict the thickness of each color material in a multilayer specimen from the color transmission image based on the Beer–Lambert Law. In this work, a normal scanner is employed to achieve the color transmission image of the monochrome transparent films. RGB values represent the transmitted intensity. A linear relationship between the optical depth and physical thickness is observed under different monochromatic lights. It is supposed that for a multilayer transparent film which consisted of different monochrome transparent films, the optical depth is related to the physical thickness of each monochrome transparent component. Therefore, an estimating equation is proposed to predict the thickness of each color material in the multilayer specimen. According to the result, the standard deviation of predicted thickness and practical thickness of each color film in the multilayer specimen is 0.93%. Fairly good agreement and high accuracy are obtained between the practical and predicted values, and the validity of this method is confirmed.
Difficult texts: The submission of Job (Job 42.6)
Authors: Phillips Anthony
Published: May 2020

Interpreting this text as an admission of sin on Job’s part makes nonsense of the book for Job is specifically rewarded by God for what he has said. Rather, it is to be seen as recognition by Job of what it means to be human: faith must of necessity be agnostic. This is in the end a comfort.
Doing what the early Church did?
Authors: Bradshaw Paul F.
Published: May 2020

The Liturgical Movement often supported its innovations by saying that they were a return to what the early Church did. Now that more recent research has shown at least some of these claims to be unfounded, what principles should guide future liturgical revision?
Pathways to Recidivism: Do Behavioral Disorders Explain the Gang-Recidivism Relationship during Reentry?
Authors: Wolff Kevin T. , Baglivio Michael T. , Limoncelli Katherine E. , Delisi Matt
Published: May 2020

Current scholarship on gang involvement and behavior has focused on several individual and environmental factors believed to drive the use of violence, yet limited research has explored the potentially confounding role of behavioral disorders. Using a sample of youth who completed a long-term residential placement within the Florida Department of Juvenile Justice (FDJJ), this study extends the recent findings of DeLisi et al. to determine whether the presence of a conduct disorder or other behavioral disorder renders the effect of gang involvement on recidivism spurious. Using a series of logistic regression models, behavioral disorders were associated with rearrest, but for males only. Furthermore, behavioral disorders did not render the effect of gang membership on rearrest or readjudication spurious, as the main effect of gang involvement held across all models estimated. Gang-involved adjudicated youth present with myriad mental health, temperamental, and individual risk factors.
Who Gets to Choose? On the Socio-algorithmic Construction of Choice
Authors: Kotliar Dan M.
Published: May 2020

This article deals with choice-inducing algorithms––algorithms that are explicitly designed to affect people’s choices. Based on an ethnographic account of three Israeli data analytics companies, I explore how algorithms are being designed to drive people into choice-making and examine their co-constitution by an assemblage of specifically positioned human and nonhuman agents. I show that the functioning, logic, and even ethics of choice-inducing algorithms are deeply influenced by the epistemologies, meaning systems, and practices of the individuals who devise and use them and that such algorithms are similarly affected by interorganizational relationships, various nonhuman agents, and changing geopolitical contexts. I conclude by discussing the flexibility of choice-inducing algorithms and by arguing that such algorithms are not programmed to induce specific choices but to more generally convert people into choosers, and thus, to algorithmically (re)create the modern need to choose. This article contributes to the growing literature on algorithms and culture and to our understanding of choice-making in contemporary life. At the same time, it provides a new vocabulary that offers to critically engage with algorithms and their power without losing sight of the often very specific contexts from which they arise.
Supporting Mindfulness With Technology in Students With Intellectual and Developmental Disabilities
Authors: McMahon Amanda K. , Cox Anne E. , Miller Darcy E.
Published: May 2020

Young adults with intellectual and developmental disabilities (IDDs) are at an increased risk of developing mental health disorders. Mindfulness may be one strategy that can help support the mental health needs of this particular population; however, those with (IDDs) may need additional support in cultivating the practice. The purpose of this study was to investigate the use of a wearable device designed to provide neurofeedback to help promote state mindfulness in young adults with (IDDs). Additionally, attention and affect mechanisms were examined, as well as the social validity of using the wearable device. Using an A-B-A-B single-subject study design, five ( age range = 18–25) students completed 20 sessions that consisted of listening and not listening to neurofeedback. Results provide some support for the positive effect of neurofeedback on state mindfulness, paying attention to the breath, and positive affect. All five students reported acceptability of using the device.
Losing Hold of the American Dream: A Qualitative Exploration of the Relationship Between Foreclosure and Psychological and Physical Health
Authors: Collins Cyleste C. , DeRigne LeaAnne
Published: May 2020

The purpose of this study was to conduct an exploratory qualitative study of the impact of foreclosure on health. Twenty-nine interviews were conducted with people who had children under the age of 18 years at the time of the foreclosure. Interviews explored perspectives on the foreclosure experience, including factors that led to the foreclosure, the meaning(s) the foreclosure has had for them, and the health care impact. Thematic analyses identified themes underlying families’ descriptions of their experiences. Participant families described the stress of losing a home and how that had contributed to a number of psychological and physiological ailments. Psychological effects included high levels of perceived stress, anxiety, grief, and a sense of shame and failure, while physiological effects were often described as either stress-induced or existing issues worsened by stress. These findings are discussed with regard to their implications for improving services and policies offered to families.
Airway Management for Endoscopic Laryngotracheal Stenosis Surgery During COVID‐19
Authors: Prince Andrew D. P. , Cloyd Benjamin H. , Hogikyan Norman D. , Schechtman Samuel A. , Kupfer Robbi A.
Published: May 2020

The novel coronavirus disease 2019 (COVID‐19) pandemic presents unique challenges for surgical management of laryngotracheal stenosis. High viral concentrations in the upper aerodigestive tract, the ability of the virus to be transmitted by asymptomatic carriers and through aerosols, and the need for open airway access during laryngotracheal surgery create a high‐risk situation for airway surgeons, anesthesiologists, and operating room personnel. While some surgical cases of laryngotracheal stenosis may be deferred, patients with significant airway obstruction or progressing symptoms often require urgent surgical intervention. We present best practices from our institutional experience for surgical management of laryngotracheal stenosis during this pandemic, including preoperative triage, intraoperative airway management, and personal protective measures.
General thoracic surgery services across Asia during the 2020 COVID-19 pandemic
Authors: Jheon Sanghoon , Ahmed Aneez DB , Fang Vincent WT , Jung Woohyun , Khan Ali Zamir , Lee Jang-Ming , Nakajima Jun , Sihoe Alan DL , Thongcharoen Punnarerk , Tsuboi Masahiro , Turna Akif
Published: May 2020

The COVID-19 pandemic of 2020 posed an historic challenge to healthcare systems around the world. Besides mounting a massive response to the viral outbreak, healthcare systems needed to consider provision of clinical services to other patients in need. Surgical services for patients with thoracic disease were maintained to different degrees across various regions of Asia, ranging from significant reductions to near-normal service. Key determinants of robust thoracic surgery service provision included: preexisting plans for an epidemic response, aggressive early action to “flatten the curve”, ability to dedicate resources separately to COVID-19 and routine clinical services, prioritization of thoracic surgery, and the volume of COVID-19 cases in that region. The lessons learned can apply to other regions during this pandemic, and to the world, in preparation for the next one.
Improvising urban spaces, inhabiting the in-between
Authors: Müller Martin , Trubina Elena
Published: May 2020

This paper discusses improvisation as a liminal practice of inhabiting the in-between that marks urban spaces from squats and brownfields to communal gardens, from infrastructural maintenance and urban living labs to political protest and solidarity in times of crisis. It shows how improvisation emerges in the interstices between uncertain flux and ossified rigidities to construct in-between spaces of ambiguous political openings even in ostensibly formal, rigid contexts. To that end, it draws on documents, media reports, interviews and participant observation to analyse the multiple mutations of what eventually became the Boris Yeltsin Presidential Centre in Ekaterinburg, a cultural flagship in Russia’s third largest city. Morphed from an abandoned office block into a memorial multi-purpose complex, the Yeltsin Centre is the product of elites and ordinary people responding to conjunctural openings in seemingly inert structures. While highlighting the political openings made possible by improvisation inhabiting the in-between, the paper also underscores the ambiguous nature of this practice and its limits.
Neural Correlates of Perceptual Grouping Under Conditions of Inattention and Divided Attention
Authors: Carther-Krone Tiffany A. , Lawrence-Dewar Jane M. , Shomstein Sarah , Nah Joseph C. , Collegio Andrew J. , Marotta Jonathan J.
Published: May 2020

Grouping local elements of the visual environment together is crucial for meaningful perception. While our attentional system facilitates perception, it is limited in that we are unaware of some aspects of our environment that can still influence how we experience it. In this study, the neural mechanisms underlying the Ponzo illusion were examined under inattention and divided-attention conditions using functional magnetic resonance imaging to investigate the brain regions responsible for accessing visual stimuli. A line discrimination task was performed in which two horizontal lines were superimposed on a background of black and white dots that, on occasion, induced the Ponzo illusion if perceptually grouped together. Our findings revealed activation for perceptual grouping in the frontal, parietal, and occipital regions of the brain and activation in the bilateral frontal, temporal, and cingulate gyrus in response to divided attention compared with inattention trials. A direct comparison between grouping and attention showed involvement of the right supramarginal gyrus in grouping specifically under conditions of inattention, suggesting that even during implicit grouping complex visual processing occurs. Given that much of the visual world is not represented in conscious perception, these findings provide crucial information about how we make sense of visual scenes in the world.
Luso-Brazilian geographies? The making of epistemic communities in semi-peripheral academic human geography
Authors: Paiva Daniel , de Oliveira Francisco Roque
Published: May 2020

This article provides the first overview of the dialogues between Brazilian and Portuguese geography throughout the 20th and 21st centuries. We expand current debates about marginal geographies in the growing field of global histories of geography by arguing that the Luso-Brazilian case reveals how international epistemic communities can be formed between semiperipheral geographic communities. We call attention to the role that science funding plays in the making of epistemic communities in semiperipheral spaces where political instability prevails, by allowing the creation of platforms of dialogue between geographic academies, such as international conferences, scientific journals, and research projects.
Hurricane Wind and Storm Surge Effects on Coastal Bridges under a Changing Climate
Authors: Snaiki Reda , Wu Teng , Whittaker Andrew S. , Atkinson Joseph F.
Published: May 2020

Hurricanes and their cascading hazards have been responsible for widespread damage to life and property, and are the largest contributor to insured annual losses in coastal areas of the U.S.A. Such losses are expected to increase because of changing climate and growing coastal population density. An effective methodology to assess hurricane wind and surge hazard risks to coastal bridges under changing climate conditions is proposed. The influence of climate change scenarios on hurricane intensity and frequency is explored. A framework that couples the hurricane tracking model (consisting of genesis, track, and intensity) with a height-resolving analytical wind model and a newly developed machine learning-based surge model is used for risk assessment. The proposed methodology is applied to a coastal bridge to obtain its traffic closure rate resulting from the observed (historical) and future (projected) hurricane winds and storm surges, demonstrating the effects of changing climate on the civil infrastructure in a hurricane-prone region.
Subtypes of Girls Who Engage in Serious Delinquency and Their Young Adult Outcomes
Authors: Smith Danielle M. , Blake Jamilia J. , Luo Wen , Keith Verna M. , Gilreath Tameka
Published: May 2020

Girls are increasingly becoming involved with the juvenile justice system; however, what brings girls to engage in delinquency or what obstacles these girls face later in life resulting from adolescent criminal behavior is understudied. In the present study, we used latent class analysis to identify subtypes of risks among adolescent girls ( N = 1,174) who have engaged in delinquent behaviors and mixture modeling to determine what distal psychological, social, educational, and economic outcomes in young adulthood are associated with each subtype. Four adolescent subtypes were identified, which were distinguished primarily based on the severity of their self-reported victimization experiences and mental health concerns. Classes with higher levels of victimization experiences tended to report more engagement with delinquent behavior in adolescence and had a larger proportion of Black and Hispanic girls than lower-victimization classes. Identified classes differed from each other on distal (i.e., young adulthood) measures of economic instability, educational attainment, drug use, depression, and adult arrests. Generally, latent classes which were characterized by higher rates of victimization and mental health concerns and lower educational performance in adolescence fared worse in young adulthood. Implications for those who care for girls who engage in delinquency, including suggestions for using trauma and culture informed screening, prevention, and intervention services, and directions for future research are discussed. Additional online materials for this article are available on PWQ’s website at http://journals.sagepub.com/doi/suppl/0361684320918243 .
Analysis of flow field and hemolysis index in axial flow blood pump by computational fluid dynamics–discrete element method
Authors: Cheng Lizhi , Tan Jianping , Yun Zhong , Wang Shuai , Yu Zheqin
Published: May 2020

To fully study the relationship between the internal flow field and hemolysis index in an axial flow blood pump, a computational fluid dynamics–discrete element method coupled calculation method was used. Through numerical analysis under conditions of 6000, 8000, and 10,000 r/min, it was found that there was flow separation of blood cell particles in the tip of the impeller and the guide vane behind the impeller. The flow field has a larger pressure gradient distribution, which reduces the lift ratio of the blood pump and easily causes blood cell damage. The study shows that the hemolysis index obtained by the computational fluid dynamics—discrete element method is 4.75% higher than that from the traditional computational fluid dynamics method, which indicates the impact of microcollision between erythrocyte particles and walls on hemolysis index and also further verifies the validity of the computational fluid dynamics–discrete element coupling method. Through the hydraulic and particle image velocimetry experiments of the blood pump, the coincidence between numerical calculation and experiment is analyzed from macro and micro aspects, which shows that the numerical calculation method is feasible.
The haemodynamic effects of oXiris haemofilter in septic shock patients requiring renal support: A single-centre experience
Authors: Lumlertgul Nuttha , Srisawat Nattachai
Published: May 2020

Excessive pro-inflammatory and anti-inflammatory cytokines are mediators for haemodynamic alterations, metabolic acidosis, and multi-organ failure in sepsis. Recently, oXiris® haemofilter (Baxter, IL, USA) has been introduced as a novel haemofilter to mitigate inflammatory response during sepsis-associated acute kidney injury requiring renal replacement therapy. In the present case series, the researchers retrospectively reviewed critically ill patients with septic shock with the use of at least one oXiris haemofilter during continuous renal replacement therapy between June 2015 and December 2017. The timing for oXiris initiation was at the nephrologists’ discretion. The impact of oXiris haemofilter was evaluated on mean arterial pressure, vasopressor dosage, Sequential Organ Failure Assessment score, lactate and base excess during 72 h after treatment. Thirty-five patients were enrolled in the study. An improvement of haemodynamic status was found, shown by increased mean arterial pressure by 6.1% ( p = 0.35), decreased norepinephrine dose by 45.9% ( p = 0.02), inotropic score by 26.4% ( p = 0.02) and vasopressor dependency index by 40.5% ( p = 0.01). Cardiovascular Sequential Organ Failure Assessment scores significantly decreased over 72 h ( p = 0.02). Blood lactate levels and base excess also showed statistically significant improvements. The median filter lifetime was 23 (interquartile range = 14–36) hours. The intensive care unit mortality was 82.9%. Treatment with oXiris was safe and well-tolerated with no device-related adverse events. In conclusion, continuous renal replacement therapy with oXiris haemofilter is safe and may improve haemodynamic parameters in septic patients with severe renal dysfunction. Nonetheless, these findings were drawn from a retrospective analysis without a control group, and therefore cannot be generalised. Randomised controlled trials are warranted to confirm these findings.
Quality of Life and Well-being of Carers of People With Dementia: Are There Differences Between Working and Nonworking Carers? Results From the IDEAL Program
Authors: Clarke Rachel , Farina Nicolas , Chen Henglien Lisa , Rusted Jennifer M. ,   in collaboration with the IDEAL program team
Published: May 2020

The aim of this study was to identify the differences in quality of life (QoL) and well-being between working and nonworking dementia carers and the relative contribution of psychological characteristics, caregiving experience, and social support. Multiple regressions modeled the contribution of working status, caregiver experiences, and psychological and social resources to carer QoL (EQ-5D) and well-being (WHO-5). After controlling for age, gender, carer–dyad relationship, and severity of dementia, working status contributed significant variance to EQ-5D (2%) but not to WHO-5 scores. Independent of working status, higher self-esteem and reduced stress contributed to variance in both models. Self-efficacy, social support, and positive perceptions of caregiving additionally contributed to higher WHO-5 scores. Working status associated with higher EQ-5D QoL; this may reflect the sustained sense of independence associated with supported work opportunities for carers. Outside of working status, the findings support the importance of psychological and social factors as targets to improved mental health for dementia carers.
Teachers’ Unpreparedness to Accommodate Student Needs
Authors: Chu Man-Wai , Craig Heather L. , Yeworiew Lake B. , Xu Yue
Published: May 2020

Many students require special education and programming to succeed in the classroom. This study analyzed international and national assessment teacher survey data regarding inclusive education to better characterize student classroom needs and teacher preparedness to support them. Most teachers indicated that they relied on teacher-based accommodations and some teachers did not have access to external resources. While many teachers did not indicate receiving adequate teacher training courses and professional development (PD) on inclusive education, results indicate students from classrooms in which teachers took inclusive education PD statistically significantly outperform their peers ( F[1, 5.2] = 526.60, p < .05). As school psychologists support teachers in their classrooms to meet the needs of all their students, it is important for school psychologists to consider the minimal training and lack of PD attended by these teachers coupled with their relaxed attitude toward attending PD on teaching students with special needs.
Understanding Intimate Partner Violence Perpetration Involving the Deaf Population
Authors: Mastrocinque Jeanna M. , Cerulli Catherine , Thew Denise , Chin Nancy P. , Pollard Robert Q
Published: May 2020

There has been an increase in intimate partner violence (IPV) research regarding the deaf population; however, no studies to date obtained data directly from members of the deaf population who disclose IPV perpetration. This community-based participatory research study explored the social context of IPV perpetration involving the deaf population through interviews with deaf or hard-of-hearing individuals who self-identified as perpetrating either physical or sexual abuse in an intimate relationship where at least one partner was deaf. Through semi-structured interviews using video relay, an interdisciplinary research team, which included deaf investigators, explored questions which included IPV triggers, types of IPV, weapon use, childhood victimization, and interactions with first responders and response systems (e.g., criminal justice, medical). The types of IPV abuse, resulting injuries, and systems used are discussed. The team collectively identified key elements of abuse and their relationships to each other through concept mapping of each interview. Through a method of constant comparison, we identified several themes: intergenerational transmission of violence, fund of information concerns, communication barriers with family and friends and resulting frustration, and help-seeking challenges. Many of these themes are specific to the deaf population, illustrating the need for continued research to understand IPV in diverse communities. Findings are compared with IPV trends in the general (hearing) population, and prompt concerns that universal IPV interventions may not effectively address the needs of the deaf population. Recommendations for diversifying screening efforts, modifying screening tools, and tailoring interventions to better address IPV involving deaf and hard-of-hearing populations are discussed.
Linking Childhood Maltreatment and Psychological Symptoms: The Role of Social Support, Coping Styles, and Self-Esteem in Adolescents
Authors: Wang Shanshan , Xu Huiqiong , Zhang Shichen , Yang Rong , Li Danlin , Sun Ying , Wan Yuhui , Tao Fangbiao
Published: May 2020

Psychological symptoms are common among adolescents in China, which are associated with various negative consequences. There has been a pressing need for additional research of factors responsible for the occurrence of psychological symptoms during this developmental period, among which childhood maltreatment, personal coping style, one’s levels of social support, and self-esteem deserve our attention. The association between childhood maltreatment and psychological symptoms is evident; however, the possible mediating effect of the other three factors mentioned above remains unclear. Hence, the current study aims to investigate the possible mediating roles of social support, coping style, and self-esteem in the relationship between childhood maltreatment and the development of psychological symptoms among adolescents. An adolescent-based health survey was conducted between 2013 and 2014 in 15 schools in China. A total of 9,704 students (aged 11–19 years) were enrolled and measures on childhood maltreatment, social support, coping styles, self-esteem, and psychological symptoms were completed. It was found that childhood maltreatment was positively correlated with psychological symptoms and negative coping styles, and negatively correlated with social support, positive coping styles, and self-esteem ( p < .001). Social support, coping styles, and self-esteem mediated the relationship between childhood maltreatment and psychological symptoms. The estimated effect of childhood maltreatment on the occurrence of psychological symptoms could be explained by the mediation of social support, positive coping styles, negative coping styles, and self-esteem, whose ratio of roles came to 13.8%, 7.5%, 20.9%, and 10.3%, respectively. These findings indicate a need to promote social support, self-esteem, and positive coping styles, and decrease the level of negative coping styles, to markedly reduce the impact of psychological symptoms of childhood maltreatment among adolescents.
The Triumph of Novelty over Experience? Social Policy Responses to Demographic Crises in Hungary and Poland since EU Enlargement
Authors: Inglot Tomasz
Published: May 2020

This article belongs to the special cluster, “Politics and Current Demographic Challenges in Central and Eastern Europe,” guest-edited by Tsveta Petrova and Tomasz Inglot.

During the past two decades, many European countries, including Germany, Italy, and Spain in the west, and Poland and Hungary in the east, encountered prolonged demographic crises. These challenges first became evident in the late 1990s as fertility rates declined rapidly, much below the level necessary to ensure a simple replacement of generations. Moreover, since the EU accession, mass labor migration from the new Member States to the more developed western European countries added yet another dimension to the growing population problems. This article attempts to explain variation in governmental policy responses to these developments between two countries, Poland and Hungary. Hungary, owing to its long-term tradition of relatively generous and extensive social programs directed to families, youth, and children, should be expected to handle its population emergency much better than Poland. Yet, the opposite has happened. In the last few years, Poland has proposed and implemented several innovative measures to address fertility and migration pressures while Hungary has remained committed to its traditional social policies in this domain. I will analyze and compare the two cases by examining a combination of historical factors related to the legacies of demographic emergencies defined in terms of national strength and survival, and by examining the politics of family policy, with a special focus on the creation of coalitions of governmental and/or nongovernmental actors that either facilitate or obstruct effective policy innovation.
Smart, vulnerable, playful or just disturbing? A discourse analysis of child involvement in palliative care
Authors: Hogstad Ingrid , Jansen Anne
Published: May 2020

In Scandinavian countries, health professionals are legally obliged to involve patients’ minor children. A growing field of research focuses on the support to, and needs and experiences of, these children. We add to previous research by analysing discourse in qualitative interviews with nurses and doctors in Norwegian public palliative health care. The analysis identifies four interpretative repertoires picturing the child in different ways and defining possibilities for what health professionals can say and do regarding child involvement.
‘Ghastly marionettes’ and the political metaphysics of cognitive liberalism: Anti-behaviourism, language, and the origins of totalitarianism
Authors: Carr Danielle Judith Zola
Published: May 2020

While behaviourist psychology had proven its worth to the US military during the Second World War, the 1950s saw behaviourism increasingly associated with a Cold War discourse of ‘totalitarianism’. This article considers the argument made in Hannah Arendt’s The Origins of Totalitarianism on totalitarianism as a form of behaviourist control. By connecting Arendt’s Cold War anti-behaviourism both to its discursive antecedents in a Progressive-era critique of industrial labour, and to contemporaneous attacks on behaviourism, this paper aims to answer two interlocking questions: Why was behaviourism overtaken by cognitivism as the dominant theoretical orientation of psychologists in the 1960s, and what role did the concept of language play in this shift?
Cybernetics for the command economy: Foregrounding entropy in late Soviet planning
Authors: West Diana Kurkovsky
Published: May 2020

The Soviet Union had a long and complex relationship with cybernetics, especially in the domain of planning. This article looks at Soviet postwar efforts to draw up plans for the rapidly developing, industrializing, and urbanizing Siberia, where cybernetic models were used to develop a vision of cybernetic socialism. Removed from Moscow bureaucracy and politics, the various planning institutes of the Siberian Academy of Sciences became a key frontier for exploring the potential of cybernetic thinking to offer a necessary corrective to Soviet planning. Researchers there put forth a vision of a dynamic Soviet economy managed through partially automated subsystems, which, while decentralized, would grant the central planning apparatus flexibility, a capacity for emergence, and overall solvency in the face of increasingly complex factors that required consideration.
Numerical analysis of the aerodynamic performance and excitation forces in a transonic turbine cascade with flat-tip and squealer-tip blades
Authors: Pan Yang , Yuan Qi , Huang Gongge , Zhu Guangyu , Li Pu
Published: May 2020

The purpose of this paper is to numerically investigate the effect of blade tip clearance and its structure on the turbine aerodynamic performance and excitation force on blades in a transonic turbine cascade. Hence, circular cascades with flat-tip and squealer-tip blades and eight different tip clearances based on the SNECMA transonic turbine were established and the rotational effect was taking into consideration. The simulations were performed by solving the RANS equations and the SST turbulence model was used. The results show that tip clearance and tip structure have a significant influence on the turbine efficiency and excitation forces. Smaller tip clearance and squealer tip structure can reduce the tip leakage flow and leads to higher turbine efficiency. The tangential blade force varies nonlinearly with tip clearance since the leakage flow significantly changes the static pressure distributions on blade surfaces. Further, the excitation force factor was also calculated and illustrated.
Comparative study of air quality indices in the European Union towards adopting a common air quality index
Authors: Karavas Zissis , Karayannis Vayos , Moustakas Konstantinos
Published: May 2020

This study aims to compare air quality indices applied in European Union countries towards adopting a common air quality index. The urban European cities Rome, Madrid, Paris, London, Berlin, Warsaw, Stockholm, and Oslo were selected. Using the EEA AirBase air quality database, time series data for the major atmospheric pollutants (CO, NO2, SO2, O3, PM10, and PM2.5) were recovered for each city, for most recent years available. Daily averages, maximum hourly values and maximum 8-h averages were calculated for each pollutant. The air quality indices selected were BelAQI, DAQx, DAQI, AtmoIndex, AQIH, and CAQI. The daily value of each air quality indices and the corresponding dominant atmospheric pollutant were determined for each city. A two-stage normalization procedure was applied on air quality indices in a 0–1 range, to allow their direct comparison without altering their structure. All air quality indices exhibited air quality rates over 64% for all cities, thus below the European Union air quality standard. The dominant pollutant was NO2 for both BelAQI and DAQx; O3 for both DAQI and AQIH (with an exception for Warsaw where SO2 was the dominant pollutant). For CAQI, NO2 prevails in Berlin, London, Warsaw, Stockholm, and Oslo, while O3 prevails in Rome, Madrid, and Paris. The dominant pollutant for AtmoIndex was NO2 in Berlin, Warsaw, and Stockholm; O3 in Madrid, Paris, London, and Oslo; PM10 in Rome. A very strong positive statistical correlation ( p < 0.01) was found for all cities between BelAQI and CAQI, and also between CAQI and DAQx. A strong positive statistical correlation ( p < 0.01) was found for all cities between BelAQI and DAQx. A moderate positive correlation was shown between the following pairs of indices: AtmoIndex-DAQI, AtmoIndex-AQIH, DAQI-AQIH, BelAQI-AQIH, and AQIH-CAQI. On the contrary, a weak positive correlation was noticed between the following pairs of indices: BelAQI-DAQI, BelAQI-AtmoIndex, DAQX-DAQI, DAQx-AQIH, DAQI-CAQI, and CAQI-AtmoIndex. After the normalization process that enables the direct comparison of the air quality indices, the main results are the BelAQI presents the largest normalized median (range 0.33–0.5) implying the worst air quality compared to the other air quality indices. The CAQI has a median value of 0.33, the DAQx of 0.25, while the AtmoIndex a median value range of 0.125–0.375, and the DAQI and AQIH of 0.165–0.33. Concluding, the AQIH can be proposed as a common European Union air quality index because: firstly, its calculation comprises all significant atmospheric pollutants including PM2.5, thereby being harmonized with the Directive 2008/50/EC, and, secondly, AQIH does not display extremely low or high (normalized) values compared to the other air quality indices.
The archival turn in classical social psychology: Some recent reports
Authors: Brannigan Augustine
Published: May 2020

Preservation of the research records of classical experiments in university archives has opened a new avenue of investigation for students of social psychology. In many cases, the records afford the observer with access to materials to explain the actual progress of the research as it transpired originally and permit the observer to assess the fidelity as well as the inconsistencies between what was accomplished and what was subsequently published in the scientific literature. This archival turn in psychological research can provide a fresh understanding of the significance of the original research exposing both its value and its apparent weaknesses. In this essay, I explore archival reassessments of the work of Milgram, Zimbardo, and Sherif.
Cardiovascular Changes Associated with Hypertensive Heart Disease and Aging
Authors: Saheera Sherin , Krishnamurthy Prasanna
Published: May 2020

Cardiovascular diseases are the leading cause of mortality and morbidity worldwide and account for more than 17.9 million deaths (World Health Organization report). Hypertension and aging are two major risk factors for the development of cardiac structural and functional abnormalities. Hypertension, or elevated blood pressure, if left untreated can result in myocardial hypertrophy leading to heart failure (HF). Left ventricular hypertrophy consequent to pressure overload is recognized as the most important predictor of congestive HF and sudden death. The pathological changes occurring during hypertensive heart disease are very complex and involve many cellular and molecular alterations. In contrast, the cardiac changes that occur with aging are a slow but life-long process and involve all of the structural components in the heart and vasculature. However, these structural changes in the cardiovascular system lead to alterations in overall cardiac physiology and function. The pace at which these pathophysiological changes occur varies between individuals owing to many genetic and environmental risk factors. This review highlights the molecular mechanisms of cardiac structural and functional alterations associated with hypertension and aging.
Long-run Association Between Bank Credit and Output: A Study on Districts’ Panel of West Bengal, India
Authors: Das Ramesh Chandra , Chavan Soniya
Published: May 2020

In a globalized world, the financial sectors and the real sectors are interlinked. Although it is a common phenomenon to a developed economy in its national as well as provincial levels, it has hardly been tested for the low-income countries like India. It is further difficult to have such linkage effects at the provinces and district levels. This article aims to examine whether per capita commercial bank credit and per capita net district domestic product for the districts of West Bengal state in India have long-run associations for the period 1993–2014 in a panel data framework. Using the panel cointegration and Vector error correction mechanism (VECM) technique, the study reveals that both the financial and real sector indicators are cointegrated and the short-run errors are corrected significantly to establish that there is bilateral causality between credit and output in both long run and short run.
Tobacco Industry Interference Index: Implementation of the World Health Organization’s Framework Convention on Tobacco Control Article 5.3 in India
Authors: Chugh Aastha , Bassi Shalini , Nazar Gaurang P. , Bhojani Upendra , Alexander Cyril , Lal Pranay , Gupta Prakash C. , Arora Monika
Published: May 2020

In India, there has been no attempt to measure the implementation of World Health Organization’s Framework Convention on Tobacco Control Article 5.3, which provides guidelines to address tobacco industry interference (TII). This study draws on a desk review conducted to assess the frequency and severity of TIIs and the government’s response, reported between January and December 2017. This study highlights that the government of India does not allow tobacco industry to participate in policy development. However, the industry interferes by collaborating with the government’s allied organizations. The tobacco industry has diversified as food industry in India, and directly or indirectly supports various government programs, by investing through their corporate social responsibility schemes. In addition, there are limited legislative measures to allow transparency in adoption of Article 5.3 guidelines across the country. Hence, the findings of this study underscore an exigent need to adopt and implement Article 5.3 at the national level in India.
Emergency Authorization of Chloroquine and Hydroxychloroquine for Treatment of COVID-19
Authors: Piszczatoski Christopher R. , Powell Jason
Published: May 2020

The world is suffering a respiratory pandemic disease caused by a novel coronavirus (2019-nCoV), commonly known as COVID-19 (coronavirus disease 2019). The Food and Drug Administration issued an emergency authorization for chloroquine and hydroxychloroquine as experimental treatments for COVID-19 leading to a shortage of both medications. A literature review conducted in April 2020 shows a lack of high-quality data available, resulting in ambiguous guideline recommendations. Decisions to use either drug should be made with careful consideration of risks versus benefits along with proper monitoring. Because of its higher potency and better safety profile, hydroxychloroquine may be the more reasonable treatment option if treatment is initiated.
Necessity of Interfragmentary Lag Screws in Precontoured Lateral Locking Plate Fixation for Supination-External Rotation Lateral Malleolar Fractures
Authors: Park Young Hwan , Cho Hyun Woo , Choi Gi Won , Kim Hak Jun
Published: May 2020

Background:

Interfragmentary lag screws, protected by a plate, have been applied for many years in the treatment of supination-external rotation (SER) ankle fractures. Recently, similar biomechanical stability was found between fixation completed with a plate and lag screw and a plate alone. The aim of this study was to determine whether interfragmentary lag screws are necessary during precontoured lateral locking plate fixation for SER lateral malleolar fractures.

Methods:

A prospective randomized controlled trial of 76 patients with unilateral Lauge-Hansen SER lateral malleolar fractures was conducted. The patients were randomly treated either with or without the use of interfragmentary lag screws with precontoured lateral locking plate fixation. Clinical outcomes were assessed using the Olerud-Molander Ankle Score and a visual analog scale for pain. Radiologic outcomes were assessed based on the Kellgren and Lawrence scale score, incongruity of the ankle joint, and type of fracture healing. Sixty-nine patients completed 12 months of follow-up.

Results:

There was no significant difference between the 2 groups with regard to clinical outcomes at 3 and 12 months after surgery and radiologic outcomes at 12 months after surgery. All patients in both groups achieved primary bone healing.

Conclusion:

The results of this study suggest that with precontoured lateral locking plate fixation, the use of interfragmentary lag screw is not essential in the treatment SER lateral malleolar fractures.

Level of Evidence:

Level I, prospective randomized study.
Adaptation to Technology Use in Families of Children With Complex Communication Needs: An Integrative Review and Family Theory Application
Authors: West Patricia , Van Riper Marcia , Wyatt Gwen , Lehto Rebecca , Douglas Sarah N. , Robbins Lorraine
Published: May 2020

Families with children who have developmental disabilities and complex communication needs (CCNs) face challenging demands affecting family adaptation. Many children with CCNs use augmentative and alternative communication (AAC) devices to support communication, yet little is known about family adaptation to such technology. To fill this gap, an integrative review, guided by the Resiliency Model of Family Stress, Adjustment, and Adaptation was conducted to assess conceptual foundations and the state of the science of family adaptation among children utilizing AAC. Web-based searches were conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis and the Mixed Methods Appraisal Tool. Thirty-three studies met eligibility. Findings demonstrated that to enhance the science underpinning family adaptation to AAC use, future research should be grounded conceptually and address important components of the Resiliency Model. Work in this emerging area will identify and facilitate nursing efforts to assist families as they adapt to communication technology.
‘Hidden in plain sight’: Expressing political criticism on Chinese social media
Authors: Wu Xiaoping , Fitzgerald Richard
Published: May 2020

While the proliferation of social media technologies in China has empowered the public with new opportunities for public expression and political engagement in a ‘virtual public sphere’, Chinese Internet censorship has meant that users have to develop creative ways to engage in political criticism. In a context where both mechanical and human censors are employed, Chinese users have become adept at utilizing the affordances of technology, Chinese language and cultural resources to express their opinions through social media. Drawing upon data from the Chinese microblogging website, Weibo, surrounding the major chemical explosions in 2015 in Tianjin, the study explores three discursive techniques of indirection by Chinese social media users to express political criticism in the context of censorship. The study highlights that through the creative use of quotation, allusion and irony, users challenged the authority’s official narratives of the event. The study not only demonstrates the pluralization and dynamics of Chinese online expression, but also points to a better understanding of Chinese censoring as a continuingly evolving interplay between technology and cultural forms and between layers of government and users.
Rumor has it: Strategies for ethnographic analysis in authoritarian regimes
Authors: Brown Kate Pride
Published: May 2020

Accurate information can be difficult to access in authoritarian regimes. As more and more countries fall under the sway of illiberal leaders, ethnographers may find themselves unable to easily corroborate knowledge that comes from native informants. This article proffers several strategies for researchers to utilize when analyzing unverifiable ethnographic data. Following from sociological and psychological studies of rumor, the article discusses the specific role that rumor plays under conditions of authoritarian governance. Without legal access to information and robust civil liberties and rule of law, it may be risky for researchers and informants alike to dig too deeply into secret information. Assuming that corroboration is impossible, how might an ethnographer analyze the rumors without believing or disputing their factual authenticity? Several possible approaches are offered.
“I would say it’s alive”: Understanding the social construction of place, identity, and neighborhood effects through the lived experience of urban young adults
Authors: Flynn Kalen , Mathias Brenda
Published: May 2020

A burgeoning literature provides evidence that neighborhood matters, especially in relation to urban adolescent development. Exposure to crime and poverty has been shown to negatively impact key aspects of development, such as physical, mental, and emotional well-being. Traditional theoretical frameworks identifying the social mechanisms of place fail to critically examine how neighborhood effects are socially constructed at the individual level, and rather assume aggregate community narratives. Such blanket measures of neighborhood effects do not account for individual interpretations of space or the impacts of larger structural forces on decision making and developmental processes. A unique combination of qualitative GIS methodologies was utilized to explore how urban adolescents define, navigate, and engage their surrounding environment to better understand the mechanisms of neighborhood effects, and how these interactions shape development. Sedentary and walking interview data were paired with GPS data to develop a real-time understanding of the spaces across which youth were navigating. The findings from this work suggest that how youth perceive space is a complex process, stemming from the interaction of structural and social systems, and highlight the value of understanding varying resident experiences when considering definitions of neighborhood. This study begins to fill a gap in the neighborhood effects’ literature by developing an argument for the social construction of place as an alternative to traditional methodological and theoretical frameworks.