bluuebunny/crossref_metadata_2025 huggingface dataset:
Anterior Cruciate Ligament Reconstruction in High School and College-Aged Athletes: Does Autograft Choice Influence Anterior Cruciate Ligament Revision Rates?
Authors:   MOON Knee Group, Spindler Kurt P. , Huston Laura J. , Zajichek Alexander , Reinke Emily K. , Amendola Annunziato , Andrish Jack T. , Brophy Robert H. , Dunn Warren R. , Flanigan David C. , Jones Morgan H. , Kaeding Christopher C. , Marx Robert G. , Matava Matthew J. , McCarty Eric C. , Parker Richard D. , Vidal Armando F. , Wolcott Michelle L. , Wolf Brian R. , Wright Rick W.
Published: January 2020

Background:

Physicians’ and patients’ decision-making process between bone–patellar tendon–bone (BTB) and hamstring tendon autografts for anterior cruciate ligament (ACL) reconstruction (ACLR) may be influenced by a variety of factors in the young, active athlete.

Purpose:

To determine the incidence of both ACL graft revisions and contralateral ACL tears resulting in subsequent ACLR in a cohort of high school– and college-aged athletes who initially underwent primary ACLR with either a BTB or a hamstring autograft.

Study Design:

Cohort study; Level of evidence, 2.

Methods:

Study inclusion criteria were patients aged 14 to 22 years who were injured in sports, had a contralateral normal knee, and were scheduled to undergo unilateral primary ACLR with either a BTB or a hamstring autograft. All patients were prospectively followed for 6 years to determine whether any subsequent ACLR was performed in either knee after their initial ACLR. Multivariable regression modeling controlled for age, sex, ethnicity/race, body mass index, sport and competition level, baseline activity level, knee laxity, and graft type. The 6-year outcomes were the incidence of subsequent ACLR in either knee.

Results:

A total of 839 patients were eligible, of which 770 (92%) had 6-year follow-up for the primary outcome measure of the incidence of subsequent ACLR. The median age was 17 years, with 48% female, and the distribution of BTB and hamstring grafts was 492 (64%) and 278 (36%), respectively. The incidence of subsequent ACLR at 6 years was 9.2% in the ipsilateral knee, 11.2% in the contralateral normal knee, and 19.7% for either knee. High-grade preoperative knee laxity (odds ratio [OR], 2.4 [95% confidence interval [CI], 1.4-3.9]; P = .001), autograft type (OR, 2.1 [95% CI, 1.3-3.5]; P = .004), and age (OR, 0.8 [95% CI, 0.7-1.0]; P = .009) were the 3 most influential predictors of ACL graft revision in the ipsilateral knee. The odds of ACL graft revision were 2.1 times higher for patients receiving a hamstring autograft than patients receiving a BTB autograft (95% CI, 1.3-3.5; P = .004). No significant differences were found between autograft choices when looking at the incidence of subsequent ACLR in the contralateral knee.

Conclusion:

There was a high incidence of both ACL graft revisions and contralateral normal ACL tears resulting in subsequent ACLR in this young athletic cohort. The incidence of ACL graft revision at 6 years after index surgery was 2.1 times higher with a hamstring autograft compared with a BTB autograft.
Incidence of Displaced Posterolateral Tibial Plateau and Lateral Femoral Condyle Impaction Fractures in the Setting of Primary Anterior Cruciate Ligament Tear
Authors: Bernholt David L. , DePhillipo Nicholas N. , Crawford Matthew D. , Aman Zachary S. , Grantham W. Jeffrey , LaPrade Robert F.
Published: January 2020

Background:

Bone bruising of the posterolateral tibial plateau and the lateral femoral condyle sulcus terminalis has a well-established association with anterior cruciate ligament (ACL) tears. Impaction fractures of the femur and tibia may occur in these locations; however, there is a paucity of literature describing these fractures.

Purpose:

The primary objective was to quantify the incidence, size, and location of impaction fractures of the posterolateral tibial plateau and lateral femoral condyle in patients with primary ACL tears. The secondary objective was to investigate the association between impaction fractures and concomitant meniscal and ligamentous injuries.

Study Design:

Case series; Level of evidence 4.

Methods:

Patients with available magnetic resonance imaging (MRI) scans who were treated for primary ACL tear by a single surgeon were identified. MRI scans were reviewed with denotation of posterolateral tibial and femoral condylar contusions and displaced impaction fractures. Measurements of the lateral tibial plateau were taken in all patients with displaced lateral tibial plateau fractures and in a subset of control patients without tibial plateau fracture present to characterize the size and location of the bony lesion. Associations of impaction fractures with concomitant meniscal or ligamentous injuries were evaluated through use of chi-square testing.

Results:

There were 825 knees identified with available MRI scans. Lateral tibial plateau bone bruising was present in 634 knees (76.8%), and lateral femoral condyle bone bruising was present in 407 knees (49.3%). Posterolateral tibial plateau impaction fractures were present in 407 knees (49.3%), and lateral femoral condylar impaction fractures were present in 214 knees (25.9%). Patients with posterolateral tibial plateau impaction fractures were older than patients without these fractures (42.6 vs 32.7 years; P < .001), whereas patients with lateral femoral condylar impaction fractures were younger (23.8 vs 32.7 years; P < .001). There were 71 knees (8.6%) with a posterolateral tibial plateau impaction fracture with greater than 10% loss of lateral tibial plateau depth, and this group had an increased incidence of lateral meniscus posterior root tears (22.1% vs 12.0%; P = .02).

Conclusion:

Posterolateral tibial plateau impaction fractures occurred with a high incidence (49.3%) in patients with primary ACL tears and demonstrated an increased association with lateral meniscus posterior horn root tears as their size increased. Lateral femoral condylar impaction fractures occurred in 25.9% of patients with primary ACL tears and entailed an increased incidence of lateral meniscal tears and medial meniscal ramp lesions.
Characterizing municipal solid waste component densities for use in landfill air space estimates
Authors: Cline Carson , Anshassi Malak , Laux Steven , Townsend Timothy G
Published: January 2020

Understanding the densities of individual waste materials in landfills as a function of landfill overburden pressure can provide a means to estimate the space occupied by these materials when they are landfilled. A compression device was used to simulate the overburden pressures in a landfill to determine the densities associated with 14 material categories. The materials with the greatest density were food waste, yard waste, and glass, ranging from 1302 to 1865 kg m−3. The lowest density was associated with aluminum and steel/tin cans at 206 and 389 kg m−3, respectively. Some materials did not exhibit a large variation in density when the load increased, indicating that their density was mostly independent of the overburden pressure. The data gathered from this research can be used as lifecycle assessment impact categories, where the functional unit of interest is 1 tonne of a material and the impact is measured as m3 of landfill space occupied.
Assessing the role and use of recycled aggregates in the sustainable management of construction and demolition waste via a mini-review and a case study
Authors: Hahladakis John N. , Purnell Phil , Aljabri Hareb Mohammed S.J.
Published: January 2020

Rapid industrial development, mega construction projects and increased immigration are some of the reasons that the State of Qatar has recently generated an unprecedented amount of construction and demolition (C&D) waste in the country. The State is racing towards the Fédération Internationale de Football Association World Cup 2022, a fact that requires additional construction, for which it is expected to increase its rate of waste generation. Compared to other regions, there are relatively few studies in the literature that report on the C&D waste management issues of Qatar. The present work begins to address this gap by providing insights into the current state of C&D waste management practices in Qatar and by providing a mini-review on the benefits of using recycled aggregates which have only recently been allowed locally by Qatar Construction Standards. A Strengths, Weaknesses, Opportunities, and Threats analysis has been implemented, using data and information from various sources including governmental reports, industries, local waste management companies, as well as reported interviews with relevant stakeholders. Finally, several strategies were proposed and developed that could potentially be implemented by stakeholders and decision-makers, so as to improve the current status by encouraging more sustainable and viable practices.
A Comprehensive Review of the Outcome for Patients Readmitted to the ICU Following Trauma and Strategies to Decrease Readmission Rates
Authors: Morgan Madison , Vernon Tawnya , Bradburn Eric H. , Miller Jo Ann , Jammula Shreya , Rogers Frederick B.
Published: January 2020

In recent years, there has been an emphasis on evaluating the outcomes of patients who have experienced an intensive care unit (ICU) readmission. This may in part be due to the Patient Protection and Affordable Care Act’s Hospital Readmission Reduction Program which imposes financial sanctions on hospitals who have excessive readmission rates, informally known as bounceback rates. The financial cost associated with avoidable bounceback combined with the potentially preventable expenses can result in unnecessary financial strain. Within the hospital readmissions, there is a subset pertaining to unplanned readmission to the ICU. Although there have been studies regarding ICU bounceback, there are limited studies regarding ICU bounceback of trauma patients and even fewer proven strategies. Although many studies have concluded that respiratory complications were the most common factor influencing ICU readmissions, there is inconclusive evidence in terms of a broadly applicable strategy that would facilitate management of these patients. The purpose of this review is to highlight the outcomes of patients readmitted to the ICU and to provide an overview of possible strategies to aid in decreasing ICU readmission rates.
Horseradish peroxidase-catalyzed hydrogelation of fish gelatin with tunable mechanical properties and biocompatibility
Authors: Le Thi Phuong , Lee Yunki , Tran Dieu Linh , Hoang Thi Thai Thanh , Park Ki Dong
Published: January 2020

Horseradish peroxidase-catalyzed injectable gelatin hydrogels have attracted much attention in various biomedical fields because of their processability, biodegradability, and excellent biocompatibility in promoting cell adhesion and proliferation. However, gelatin derivatives are mainly obtained from mammalian sources (porcine, bovine) with thermal gelation at room temperature, leading to the potential problems in biofabrication applications. Here, we introduce a novel fish gelatin derivative that can be easily dissolved and cross-linked at room temperature by horseradish peroxidase. This system provides thermally stable fish gelatin hydrogels with tunable mechanical and biological properties, comparable to porcine gelatin hydrogels. The properties (gelation time, stiffness, degradation rate) of hydrogels prepared from fish gelatin-hydroxyphenyl propionic acid (FGH) are controllable for suitable applications. Moreover, FGH hydrogels allow human dermal fibroblast cells to adhere, proliferate, and produce the extracellular components. These results suggest horseradish peroxidase-cross-linked FGH as potential hydrogel matrices that can be used as an alternative for mammalian gelatin hydrogels in various biomedical applications.
Peer Victimization and Nonsuicidal Self-Injury Among Chinese Left-Behind Children: The Moderating Roles of Subjective Socioeconomic Status and Social Support
Authors: Wang Quanquan , Liu Xia
Published: January 2020

Peer victimization is a serious issue among school-aged children. Chinese left-behind children tend to experience peer victimization and associated nonsuicidal self-injury (NSSI) behavior. However, the possible improvement of subjective socioeconomic status (SES) based on increased family income may serve to buffer the relationship between peer victimization and NSSI, and this buffering effect may differ by level of social support. Thus, the current study aimed to examine the moderating effect of subjective SES on the relationship between peer victimization and NSSI by the level of social support among Chinese left-behind children. A total of 431 left-behind children and 447 non-left-behind children (comparison group) completed self-report scales measuring peer victimization, NSSI, subjective SES, and social support. Results showed that peer victimization was positively related to NSSI among left-behind children, but not among non-left-behind children. Moreover, for left-behind children with low levels of social support, high subjective SES intensified the association between peer victimization and NSSI; peer victimization was positively associated with NSSI among left-behind children who reported high subjective SES, but not among those with low subjective SES. However, high levels of social support seemed to protect the left-behind children with high subjective SES who experienced peer victimization from NSSI. For non-left-behind children with both parents present, high subjective SES played a protective role in the association between peer victimization and NSSI, regardless of the levels of social support they enjoyed. These findings contribute to an understanding of subjective SES as a moderating mechanism in the association between peer victimization and NSSI among left-behind children. Social support proved central to the protective role of subjective SES. Intervention programs to enhance social support can help to strengthen the protective effect of subjective SES on NSSI among left-behind children who experience peer victimization.
School principals’ perceptions on the diversification of school financing sources: A study using Delphi method
Authors: Alazmi Meznah Saad , Al-Kubaisi Huda Salem
Published: January 2020

The study aims to identify the perceptions of the principals of public schools in Kuwait regarding the importance of diversifying the sources of school financing, the actual measures taken to increase the sources of school financing and the obstacles in the way of increasing the sources of school financing. The study uses the futures studies’ methodology through implementing Delphi method to achieve the objectives of the study. The implementation of Delphi technique is conducted in four consecutive rounds on a sample of experts in the study area consisting of 25 distinguished school principals in the educational areas, during the second semester of the academic year 2017/2018. The study concluded a number of results, the most important of which are: (1) school principals are convinced of the need to diversify school financing sources and increase its sources in light of the high prices and limited budget granted by the government for this purpose; (2) there are specific measures for increasing the support for school financing, the most important of which is to urge parents and society institutions to donate to schools in order to help fill the budget shortfall; (3) there are obstacles which face the attempts to increase the sources of school financing which are legal, regulatory and community partnership-based obstacles. The study came up with several recommendations that would contribute to diversifying school financing sources.
Employment Trade-Offs under Different Family Policy Constellations
Authors: Olsen Karen M
Published: January 2020

This article examines how employees consolidate the spheres of work and family in three countries with different family policy constellations: Sweden, Germany and Great Britain. The analyses are based on data from the International Social Survey Programme, 2015. Building on family policy typologies, the study demonstrates how gender and family and employment demands interact with the institutional setting regarding how people make employment trade-offs. The results show that (1) employees in Sweden make the fewest employment trade-offs, (2) family demands exert a gendered effect on employment trade-offs in Germany and (3) employment demands have both similar and distinct gender effects across countries. The article contributes to the literature by showing how individual characteristics interact with family policy constellations. The findings provide little support for a welfare-state paradox regarding family demands but some support with regard to employment demands.
Evaluating additive manufacturing for the production of custom head supports: A comparison against a commercial head support under static loading conditions
Authors: Howard Jonathan D , Eggbeer Dominic , Dorrington Peter , Korkees Feras , Tasker Lorna H
Published: January 2020

The provision of wheelchair seating accessories, such as head supports, is often limited to the use of commercial products. Additive manufacturing has the potential to produce custom seating components, but there are very few examples of published work. This article reports a method of utilising 3D scanning, computer-aided design and additive manufacturing for the fabrication of a custom head support for a wheelchair. Three custom head supports, of the same shape, were manufactured in nylon using a continuous filament fabrication machine. The custom head supports were tested against an equivalent and widely used commercial head support using ISO 16840-3:2014. The head supports were statically loaded in two configurations, one modelling a posterior force on the inner rear surface and the other modelling a lateral force on the side. The posterior force resulted in failure of the supporting bracketry before the custom head support. A similar magnitude of forces was applied laterally for the custom and commercial head support. When the load was removed, the custom recovered to its original shape while the commercial sustained plastic deformation. The addition of a joint in the head support increased the maximum displacement, 128.6 mm compared to 71.7 mm, and the use of carbon fibre resulted in the head support sustaining a higher force at larger displacements, increase in 30 N. Based on the deformation and recovery characteristics, the results indicate that additive manufacturing could be an appropriate method to produce lighter weight, highly customised, cost-effective and safe head supports for wheelchair users.
Indian Shoppers’ Attitude Towards Grocery Shopping Apps: A Survey Conducted on Smartphone Users
Authors: Chakraborty Debarun
Published: January 2020

The smartphone users in India have been growing up for the past few years, and the research companies have predicted that it would still grow. Due to the advancement of technologies, affordable prices and various applications in the web stores, a large number of people are attracted towards smartphones. The goal of this study is to find out the approach of Indian shoppers towards grocery shopping apps. The Indian shoppers’ attitude towards grocery shopping has still not been analysed by many, and this domain is still largely untapped. The theory of planned behaviour (TPB) and the technology acceptance model (TAM) models have been provided proper factors to analyse the shoppers’ intention. The researcher has collected responses from various respondents with the help of a properly structured questionnaire, and a simple random sampling tool has also been used to select the respondents. Exploratory factor analysis and multiple regression analysis have been used to find out the outcomes. The outcomes of the study inform that attitude, perceived behavioural control, perceived usefulness and perceived ease of use have a positive and significant impact on intention. Subjective norms, however, do not have a significant effect on intention.
Waseela Foundation: Accounting for Zakat
Authors: Ashraf Junaid , Rauf Abdul
Published: January 2020

The case focusses on the issues faced by Waseela Foundation in its accounting system, specifically in recording the receipt of zakat donations and utilization thereof. The existing accounting system is simple and puts all types of donations into one pool. Expenses are paid out of that pool indiscriminately. It is not acceptable to some zakat donors who have different interpretations regarding the use of zakat funds. Mr Mustafa was given the task of redesigning the accounting system which would assure the donors that their zakat was being managed and disposed of as per their instructions. Accounting for donations in non-profits requires an elaborate system of recording and reporting that can distinguish between different sources of donations and their utilization. This is important because some donations have to be spent on specific purposes. Hence, unlike for-profit organizations, non-profit organizations have to keep different sources of funds separate for recording and reporting purposes. Zakat poses special accounting challenges because there are variations in interpretations of different schools of thought with regard to avenues of spending the zakat. The case thus provides students with an excellent opportunity to understand the intricacies of fund accounting for non-profits.
‘You’re going to teach my son to be viado’: From ‘girling’ to queering sport for development?
Authors: Válková Eva
Published: January 2020

This paper critically explores how queer youth experience sport for development programmes in Brazil. Whilst the Sport for Development and Peace (SDP) field is not void of discussions that touch upon heteronormativity and sexuality, the ‘sensitive’ stories of lesbian, gay, bisexual and transgender (LGBT) individuals within SDP initiatives remain rather unheard. Drawing on ethnographic methodology and queer theory, this paper aims to understand the impact of two different SDP programmes located in Sao Paulo, Brazil, that use sport to address sexuality and gender issues as part of their mission. The findings of this study indicate that delivery of sexuality-focused projects is a complex, problematic and contested process. Whilst the programme is conceived of as and committed to being LGBT-inclusive, the space is not completely void of heterosexism and homophobia. The queer lens here allowed for the revelation that whilst the SDP initiative provided a relatively supportive environment regarding the free expression of queer desires, it creates rather ‘safe(r)’ spaces, as the conventional norms of mainstream hetero-patriarchal society permeate these spaces. Furthermore, initiatives led to new means of exclusion and alienating experiences for its non-queer beneficiaries. Ultimately, raising the question of sexual diversity resulted in unexpected consequences outside the SDP space associated with misinterpretations, suspicions and a rejection of the initiatives. The conclusion consists of overall reflections regarding the use of the queer approach within SDP research and suggests possible directions for future studies of this topic.
Neuropathology and diagnostic features of rabies in a litter of piglets, with a brief review of the literature
Authors: Siepker Christopher L. , Dalton Martha F. , McHale Brittany J. , Sakamoto Kaori , Rissi Daniel R.
Published: January 2020

Porcine rabies is exceedingly rare worldwide. We describe herein the neuropathology and the diagnostic features of an outbreak of rabies in a litter of piglets attacked by a skunk in Georgia, United States. Rabies viral infection was confirmed in 2 of 3 piglets submitted for testing. Inflammatory and degenerative changes were more prominent in the brainstem and consisted of lymphoplasmacytic meningoencephalitis with glial nodules, neuronal necrosis, and neuronophagia. No viral inclusions (Negri bodies) were observed in multiple sections of brain. A fluorescent antibody test on fresh samples of brainstem and cerebellum was confirmatory for the eastern United States raccoon rabies virus variant. Immunoreactivity for rabies virus was detected across all brain sections in both cases but was more prominent in the thalamic and brainstem nuclei, as well as in the medial lemniscus. Rabies is an important differential diagnosis in pigs with neurologic disease.
Structural damage diagnosis under varying environmental conditions with very limited measurements
Authors: Prawin J , Lakshmi K , Rao A Rama Mohan
Published: January 2020

In this article, we present a damage diagnostic scheme with very limited measurements. The influence of environmental and operational variabilities has been considered in the present investigations apart from measurement noise. We employ null subspace analysis in the first stage to confirm the presence of damage using ambient vibration data through online monitoring. Once the presence of damage is established, in the second stage, through offline monitoring, we use the zero strain energy node concept to localize damage through inference from the set of excitation frequencies at which the structure with localized damage behaves like a healthy structure. The proposed technique requires the numerical model of the healthy structure to establish the relationship between zero strain energy nodes and excitation frequencies. In order to evaluate the proposed technique, numerical simulation studies are carried out initially on a simple beam-like structure and later considering a more practical example of the bridge existing across the Amaravathi River in Tamil Nadu, India. These investigations are subsequently complemented with an experimental study on steel I beam girder. It can be concluded from the investigations that the proposed approach is capable of detecting and localizing multiple and also subtle damages under varying environmental conditions with very limited noise-contaminated measurements.
Unlocking Student Engagement: Creation, Adaptation, and Application of an Educational Escape Room Across Three Pharmacy Campuses
Authors: Eukel Heidi , Frenzel Jeanne , Frazier Kyle , Miller Micah
Published: January 2020

Background. Educational escape rooms are positively received by students, increase knowledge, and serve as a platform for the active application of teamwork and team-based communication.

Aim. This article focuses on detailing an educational escape room that is adaptable and transferable for use with any course or discipline.

Methods. Puzzles are created around the educational objectives of the course or unit. Puzzles include ciphers, jumbles, coded messages, combination locks, rebuses, and data hunts. Students work in teams to solve content-specific puzzles to escape a room. Teams which solve all of the puzzles in the allotted time are considered to have successfully escaped the room. Gameplay can range from 60 to 75 minutes. Facultyled debriefing is an important part of the educational innovation.

Results and Conclusion. This escape room uses collaborative learning to increase student knowledge and skills in educational content. The learning experience is enhanced through dynamic student engagement with the focused topic. This topic can easily be changed to a different course topic and the corresponding gameplay puzzles adapted and transferred for use with a variety of disciplines. This manuscript details the transferability of the educational escape room to 3 campuses and provides insight for successful implementation.
Reducing Discrepancy Between Code Status Orders and Physician Orders for Life-Sustaining Therapies: Results of a Quality Improvement Initiative
Authors: Lake Rachel Elisabeth , Franks Lori , Meisenberg Barry
Published: January 2020

Background:

Advanced care planning through Physician Order For Life-Sustaining Therapies (POLST) has been encouraged by professional societies. But these documents may be overlooked or ignored during hospitalization and “full-code” orders written as a default, putting patients at risk for unwanted resuscitation. After 2 instances of unwanted resuscitation in which limited support POLSTs were ignored, a series of improvements were implemented. This study measured the effectiveness of those steps in reducing POLST code status discrepancy.

Methods:

Pre–post implementation chart review of randomly chosen medical admissions to determine the rate of discordance between POLST orders (when present) and admission code status orders. Physician Order For Life-Sustaining Therapies were classified as either “full” or “limited” based on orders for life-sustaining therapies on the form. Chi-square tests or Fisher exact tests were performed on binary data to identify statistically significant differences at the 95% confidence level between pre- and postimplementation admissions.

Results:

In all, 444 preimplementation and 448 postimplementation admissions were evaluated. Discrepant code status orders for those with limited POLST fell from 10 (22.7%) of 44 preimplementation to 3 (4.6%) of 65 after implementation, P = .006. The number of documented code status discussions in admission notes increased from 19.6% to 63.6% ( P < .001). The median age of all POLST in the chart was 1.2 years.

Conclusions:

Among those patients with limited POLST orders, discrepant full-code orders increase the potential for unwanted resuscitation. Multistep improvements including documentation templates improved the process of verifying end-of-life wishes and increased meaningful code status discussions. The rate of discrepant orders fell in response to process improvements.
Examining the Dimensionality, Reliability, and Invariance of the Depression, Anxiety, and Stress Scale–21 (DASS-21) Across Eight Countries
Authors: Zanon Cristian , Brenner Rachel E. , Baptista Makilim N. , Vogel David L. , Rubin Mark , Al-Darmaki Fatima R. , Gonçalves Marta , Heath Patrick J. , Liao Hsin-Ya , Mackenzie Corey S. , Topkaya Nursel , Wade Nathaniel G. , Zlati Alina
Published: January 2020

This study evaluated the dimensionality, invariance, and reliability of the Depression, Anxiety, and Stress Scale–21 (DASS-21) within and across Brazil, Canada, Hong Kong, Romania, Taiwan, Turkey, United Arab Emirates, and the United States ( N = 2,580) in college student samples. We used confirmatory factor analyses to compare the fit of four different factor structures of the DASS-21: a unidimensional model, a three-correlated-factors model, a higher order model, and a bifactor model. The bifactor model, with three specific factors (depression, anxiety, and stress) and one general factor (general distress), presented the best fit within each country. We also calculated ancillary bifactor indices of model-based dimensionality of the DASS-21 and model-based reliability to further examine the validity of the composite total and subscale scores and the use of unidimensional modeling. Results suggested the DASS-21 can be used as a unidimensional scale. Finally, measurement invariance of the best fitting model was tested across countries indicating configural invariance. The traditional three-correlated-factors model presented scalar invariance across Canada, Hong Kong, Romania, Taiwan, and the United States. Overall, these analyses indicate that the DASS-21 would best be used as a general score of distress rather than three separate factors of depression, anxiety, and stress, in the countries studied.
Assay-Based Differentiation in the Neutralization Profile of Unfractionated Heparin, Enoxaparin, and Fondaparinux by Andexanet Alfa
Authors: Siddiqui Fakiha , Tafur Alfonso , Bontekoe Emily , Iqbal Omer , Jeske Walter , Mehrotra Siddharth , Hoppensteadt Debra , Ramacciotti Eduardo , Fareed Jawed
Published: January 2020

Andexanet alfa is a recombinant factor Xa decoy protein, designed to reverse bleeding associated with oral anti-Xa agents. Andexanet alfa is also reported to neutralize the effects of heparin-related drugs. This study focused on the neutralization profiles of unfractionated heparin (UFH), enoxaparin, and, a chemically synthetic pentasaccharide, fondaparinux by andexanet alfa. Whole blood clotting studies were carried out using thromboelastography (TEG) and activated clotting time (ACT). The anticoagulant profile of UFH, enoxaparin, and fondaparinux was studied using the activated partial thromboplastin time (aPTT), thrombin time (TT), and amidolytic anti-Xa, and anti-IIa methods. Thrombin generation inhibition was studied using the calibrated automated thrombogram system. Reversal of each of these agents was studied by supplementing andexanet alfa at 100 µg/mL. In the TEG, andexanet alfa produced almost a complete reversal of the anticoagulant effects of UFH and enoxaparin; however, it augmented the effects of fondaparinux. In the ACT, aPTT, and TT, UFH produced strong anticoagulant effects that were almost completely neutralized by andexanet alfa. Enoxaparin produced milder anticoagulant responses that were partially neutralized, whereas fondaparinux did not produce any sizeable effects. In the anti-Xa and anti-IIa assays, UFH exhibited partial neutralization whereas enoxaparin and fondaparinux did not show any neutralization. All agents produced varying degrees of the inhibition of thrombin generation, which were differentially neutralized by andexanet alfa. These results indicate that andexanet alfa is capable of differentially neutralizing anticoagulant and antiprotease effects of UFH and enoxaparin in an assay-dependent manner. However, andexanet alfa is incapable of neutralizing the anti-Xa effects of fondaparinux.
A novel design of positive position feedback controller based on maximum damping and H2 optimization
Authors: Paknejad Ahmad , Zhao Gouying , Osée Michel , Deraemaeker Arnaud , Robert Frédéric , Collette Christophe
Published: January 2020

Positive position feedback is an attractive control law for the control of plants having no high frequency roll-off. The tuning of the parameters of the positive position feedback to obtain the desired closed-loop performance is quite challenging. This paper presents a technique to design the positive position feedback controller with the optimal damping. The technique is demonstrated on a single degree-of-freedom system. The poles of the positive position feedback are tuned using the method of maximum damping, which states that the maximum damping is achieved when both closed-loop poles of the system are merged. The parameters of the positive position feedback are dependent on the desired target damping in the closed-loop system. However, arbitrary choice of target damping results in high response at the frequencies lower than the tuning frequency. The optimal value of the target damping is obtained by minimizing the [Formula: see text] norm of the closed-loop transfer function of the system. The influence of the various parameters of the positive position feedback on the closed-loop response of the system is also studied. Finally, the experiments are conducted to verify the effectiveness of the proposed technique.
Robust optimal control and identification of adaptive cruise control systems in the presence of time delay and parameter uncertainties
Authors: Chehardoli Hossein
Published: January 2020

This article deals with the robust optimal control and identification of uncertain adaptive cruise control systems. Both measurement delay and engine’s lag are investigated in system modeling and control design. The control structure consists of two steps. In the first step, by using a new approach, the uncertain parameters of longitudinal dynamics of each vehicle is identified. Afterwards, at the second step, by using the relative position and velocity measurement with respect to ahead vehicle, a robust control against size changing of platoon is presented to assure the internal stability, string stability, and safety of heterogeneous vehicular platoons. A cost function involving important metrics internal stability, maximum overshoot, and settling time is introduced, and the particle swarm optimization algorithm is used to find the optimal values of control parameters minimizing the cost function. It will be shown that the proposed robust controller guarantees the internal stability, string stability, and safety of adaptive cruise control systems in the presence of measurement and parasitic delays. Several simulation results are provided to show the effectiveness of the proposed approaches.
Environmental Concern in a Capitalist Economy: Climate Change Perception Among U.S. Specialty-Crop Producers
Authors: Borlu Yetkin , Glenna Leland
Published: January 2020

The agricultural sector offers a unique opportunity to examine the topic of climate change because agriculture is more susceptible to climate disruptions than many other industrial sectors. Based on the analysis of the survey data and in-depth interviews with specialty-crop producers in California, New York, Pennsylvania, and Washington, we test the capacity of ecological modernization and treadmill of production perspectives to explain how resource-intensive producers recognize water availability and climate change as threats to their operation’s economic viability. We find that producers in capitalist markets recognize natural resource problems; however, they fail to respond to climate change beyond natural resource problems. We also find that local markets play a positive role in raising environmental awareness of producers. Finally, our finding on the association between the perceptions of water availability and climate change goes beyond the treadmill of production dualism that only theorizes the impacts of economic factors on the environment.
Correlates of Intimate Partner Homicide in the Rural United States: Findings From a National Sample of Rural Counties, 2009–2016
Authors: AbiNader Millan A.
Published: January 2020

Intimate partner homicide (IPH) in the U.S. rural context has increased in recent years while other types of homicide have decreased. This suggests that some rural structural characteristics make IPH more likely in rural communities than other forms of homicide. This study used multilevel models to examine individual- and community-level characteristics’ association with IPH in rural counties between 2009 and 2016 in the United States. Overall, individual-level correlates were more strongly associated with IPH than community-level correlates, although increased economic need was associated with IPH in one of the models. Implications for individual-level intervention, policy, and future research are discussed.
Role of vector-borne pathogens in the development of fever in cats: 2. Tick- and sandfly-associated diseases
Authors: Lappin Michael R , Tasker Séverine , Roura Xavier
Published: January 2020

Practical relevance:

There has been increasing identification of vector-borne pathogens in cats presented to veterinary clinics around the world for evaluation of fever and the associated secondary effects, such as signs of depression and loss of appetite.

Aim:

The aim of this article is to summarize the clinically relevant information concerning fever in cats that is associated with pathogens vectored by ticks or sandflies, with an emphasis on presenting clinical abnormalities and optimal diagnostic, treatment and prevention strategies. Fever in cats associated with pathogens known or suspected to be vectored by fleas was discussed within Part 1 of this two-part article series.
Cultural heritage of the Sámi in Finnish national histories 1894–2009
Authors: Nyyssönen Jukka
Published: January 2020

How has Sámi cultural heritage been incorporated into the national histories of Finland? How have the national and academic discourses constrained and enabled ways of writing about the Sámi in this genre? A complete change from a hierarchizing and at worst racializing perspective to a more matter-of-fact approach is detectable quite late on, from the 1980s onwards. The Sámi have remained on the periphery of Finnish historiography, but they have become integrated into the national history, even though they still serve to illustrate Finnish nation-building in this genre. The amount of updated archaeological and historical knowledge has increased, but the approach still under-communicates the political agency of the Sámi. The inherent methodological and history-political conservativism stunts the way the Sámi are dealt with so that the Sámi histories remain mostly uncommunicated.
The spatial and quality dimensions of Airbnb markets
Authors: Voltes-Dorta Augusto , Inchausti-Sintes Federico
Published: January 2020

Airbnb is now present in many tourist destinations worldwide. With the pricing power in the hands of the individual hosts, the assessment of competition is of great relevance. Despite the many studies on the drivers of Airbnb prices, there is no contribution yet on how quality affects the spatial dimensions of Airbnb markets. We aim to fill this gap with a case study of Bristol (United Kingdom). Using standard regression techniques, we find a quality-moderated spatial decay in the price effects of competition in local Airbnb markets. Thus, the price of a given listing is affected negatively by other listings within a set of radii that decrease with product differentiation. Beyond this local market boundary, the existence of other listings may increase prices, as demand is driven to the neighborhood- or city-wide markets because of the diversity of tourism accommodation.
The smell of Shōwa: Time, materiality and regimes of value in Japan’s second-hand kimono industry
Authors: Valk Julie
Published: January 2020

This article maps the way second-hand kimono pass between different regimes of value as they move out of people’s homes and into second-hand shops. Joining recent calls for a greater anthropological focus on the processes of divestment and disposal, the author highlights how kimono move from the inalienable space of the domestic sphere and into the alienable domain of retail, and considers how their materiality – worn fabrics, dated aesthetics and musty smell – is an active agent in the transformation of value. When initially purchased, the symbolic and economic values of kimono are congruent. But with the passage of time and the deterioration of materials and fraying of kinship bonds, the value of kimono as treasured family possessions is diminished. Yet the very materiality that caused their loss of economic and symbolic value, their undesirable smells, colours and designs can cause them to enter a new regime of value as vintage fashion supported by fashion magazines. By rethinking Arjun Appadurai’s regimes of value with a greater focus on material properties and qualities, this article aims to link cycles of divestment and consumption practices with the generation, loss and re-creation of value.
Implementing tasks in young learners’ language classrooms: A collaborative teacher education initiative through task evaluation
Authors: Zhu Yan
Published: January 2020

Despite empirical evidence in support of the effectiveness of using tasks in young learners’ classrooms, task implementation has been repeatedly reported as a thorny problem. An essential but under-researched issue is how in-service teacher education programme can be conducted to facilitate teachers’ implementing tasks in their classrooms. This practitioner research article reports on a researcher and teacher educator’s action research study in which she worked with Lucille (pseudonym), a novice English language teacher, to design and implement two repeated task-based language teaching (TBLT) lessons for Grade 2 students at a Chinese primary school. During a six-week teacher education program consisting of two cycles of TBLT lesson planning, implementation, evaluation, and reflection, the teacher educator provided continuous support to guide and scaffold Lucille’s reflective endeavours at crafting TBLT practices in her classrooms. The teacher educator also conducted student-based, response-based, learning-based, and community-based task evaluations to facilitate the teacher’s reflective practices. The study illustrates how an in-service teacher education program, fuelled by on-going professional support and empirical evaluation, facilitated a practitioner’s task implementation in young learners’ foreign language classrooms.
Is there a link between cardiovascular mortality and economic fluctuations?
Authors: Dadgar Iman , Norström Thor
Published: January 2020

Background: Unemployment might affect several risk factors of cardiovascular disease (CVD), which is the leading cause of death globally. The characterisation of the relation between these two phenomena is thus of great significance from a public-health perspective. The main aim of this study was to estimate the association between the unemployment rate and mortality from CVD and from coronary heart disease (CHD). Additional aims were (a) to assess whether the associations are modified by the degree of unemployment protection; (b) to determine the impact of GDP on heart-disease mortality; and (c) to assess the impact of the Great Recession in this context. Methods: We used time-series data for 32 countries spanning the period 1960–2015. We applied two alternative modelling strategies: (a) error correction modelling, provided that the data were co-integrated; and (b) first-difference modelling in the absence of co-integration. Separate models were estimated for each of five welfare state regimes with different levels of unemployment protection. We also performed country-specific ARIMA-analyses. Results: Because the data did not prove to be co-integrated, we applied first-difference modelling. The estimated effect of unemployment and GDP on CVD as well as CHD was statistically insignificant across age and sex groups and across the various welfare state regimes. An interaction term capturing the possible excess effect of unemployment during the Great Recession was also statistically insignificant. Conclusions: Our findings, based on data from predominantly affluent countries, suggest that heart-disease mortality does not respond to economic fluctuations.
Housing structure and occupant behaviour to increase the environmental and health co-benefits of housing: Insights from expert interviews in New Zealand
Authors: Bunker Aditi , Bärnighausen Till , Woodward Alistair , Bullen Chris
Published: January 2020

Both housing structure and occupant use of homes influence health outcomes and carbon emissions. However, it remains unclear how these elements interact. We conducted semi-structured interviews with 13 technical experts in the New Zealand housing and health sectors. We applied the general inductive method for qualitative data analysis and generated frameworks for ‘housing structure’ and ‘occupant behaviour’ including: (i) issues or barriers, (ii) solutions or facilitators and (iii) potential interventions. Addressing the location, aspect and design of the house were seen to offer the greatest gains in energy efficiency, indoor temperature and air quality. Insulation, heating and ventilation were the most critical technologies for promoting health. Raising consumer expectations of housing standards was thought to be critical to boost demand and drive supply for better quality housing. Participants proposed that sharing personal stories, combining information with active strategies (demonstration, skill rehearsal) and providing incentives were promising strategies to realise the full potential of health-enhancing home design. Schools and the local community were identified as suitable settings. We conclude that public health interventions should not only aim to build homes that maximise health and environmental outcomes but must also pay attention to how occupants behave and interface with their houses.