bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparison of cox models in detecting factors affecting healing rate of dengue hemorrhagic fever
Authors: Miftahuddin  , Salsabila I , Gul A 
Published: July 2019

Abstract
Dengue Hemorrhagic Fever (DHF) is an epidemic of disease that usually becomes a benchmark of good or bad condition of the environment and health facilities of a region. When the disease is outbreak and does not get serious treatment, it causes death. One of the first steps that can be done to deal with this disease is to know the factors that affect the healing rate of DHF patients. This study aims to detect factors affecting the healing rate of DHF patients by using Cox regression analysis based on Cox model family, such as Cox Proportional Hazard (PH) model, extended Cox model with one and two heaviside function, and stratified Cox model and get best model for this study. The data used is secondary data consisting of 107 in-patients DHF period January-December 2016 at Regional General Hospital dr. Zainoel Abidin Banda Aceh, Indonesia. Based on Cox Proportional Hazard model, the variable that significantly affect the patient’s healing rate is Age. Based on the Extended Cox model with one heaviside function, the variables that significantly affect the patient’s healing rate are Age, Sex, Number of Platelets, Clinical Degrees III and Number of Leukocytes multiplied by the time function. Based on the Extended Cox model with two heaviside functions, the variables that significantly affect the patient’s healing rate are Age, Sex, Number of Platelets, Clinical Degrees III and Number of Leucocytes multiplied by second time function. Based on the stratified Cox model, there are no variables that significantly affect the patient’s healing rate. The best model based on Akaike Information Criterion value is the Stratified Cox model.
Approaching model of Manning’s coefficient due to an Effect of density and height of vegetation in open channel
Authors: Rizalihadi M , Ziana  , Shaskia N 
Published: July 2019

Abstract
The presence of vegetation growing in the channel can cause increasing the Manning’s coefficient. The magnitude of Manning’s coefficient is depended on the characteristic and type of vegetation. The purpose of the research is to study and model the effect of density and height of vegetation on Manning’s coefficient in open channel. The study was conducted in open channel with 15.5 m length, 0.5 m width and 1.0 m height. At the centre part of the channel is planted with Elephant grass (Pennisetum Purpureum). The effect of different density and height of vegetation were run with fixed discharge to measure the velocity and water profiles in order to obtain Manning’s coefficients. The effect of those variables on the developed model was evaluated using statistical analysis of variance and paired t-test with significance level of 0.05. The results showed that Manning’s coefficient is increasing as increasing density and height of vegetation. If compared to un-vegetated channel, Manning’s coefficient increase in between 4.92 - 54.07%. Based on statistical analysis, it is found that Fcalculation = 367.776 > Fcritic = 19.452, tcalculation = 12.298 and 22.464 > tcritic = 2.571 and R2 = 0,967, showing that the density and height of vegetation significantly influence on the Manning’s coefficient with strong correlation variables in the model.
Deformation and crack analysis of tunnel structure subjected to static distributed load using Pseudoshell model
Authors: Hasan M , Husaini  , Abdullah N M 
Published: July 2019

Abstract
The objective of this research is to study the deformation and crack in shotcrete of tunnel structure subjected to distributed static load. Tunnel is modeled as two dimensional finite element model using commersial finite element software, namely ATENA (Advance Tool for Engineering Non Linear Analysis) version V5. Non linear material models for concrete and reinforcing bars are adopted. For deformation and crack analysis, pseudoshell model is adopted in which fictitious crack opening is assumed occur first in pseudoshell then propagate to the tunnel structures. Three variations of pseudoshell thickness of 30 mm, 60 mm and 100 mm are used. The development of crack opening and propagation of crack and its displacement due to the increasing of static load is therefore analyzed. The analytical results show that the dummy load and displacement at the crack opening width of 1 mm for the pseudoshell thickness of 30 mm, 60 mm and 100 mm are 48 kN/m and 48,33 mm; 55 kN/m and 42,75 mm; 67 kN/m and 35,5 mm respectively. The relationships between dummy load, displacement and crack opening width are closely linear.
The influence of the using waste tire rubber and natural ziolite as Asphalt and Cement replacements to compressive strength of Semi-Flexible Pavement
Authors: Hamzani  , Munirwansyah  , Hasan M , Sugiarto S 
Published: July 2019

Abstract
The objective of this research is to study the compressive strength of semi-flexible pavement by using waste tire rubber and natural zeolite as asphalt and cement replacements. The mix design of porous asphalt is started with a determination of optimum asphalt proportion with open-graded aggregate as specified in Australian Asphalt Pavement Association (AAPA) 2004. The asphalt was then replaced by 3 %, 4 % and 5 % of waste tire rubber and the Marshall test were conducted. The cement mortar with 0 %, 5 %, 10 %, 15 % and 20 % natural zeolite was injected to porous asphalt specimens. The compressive strength test was conducted based on ASTM C670-91a at the age of the specimens of 14 days. The test results showed that the higher compressive strength is reached at the 15 % natural zeolite and 5 % waste tire rubber, which is 15,43 MPa.
Permeable interior: Unfolding threshold space within transit corridor
Authors: Maheswari N R , Arvanda E , Kusuma N R 
Published: July 2019

Abstract
At a transit corridor, threshold plays a key role in creating connectivity between the interior of transit facilities and its immediate urban context. The threshold is a choreographer of spatial experience and might potentially generate various public activities. As a transitional space, the permeability of threshold space’s boundary becomes an important factor for the users’ spatial experience and in providing a sense of safety and direction for the pedestrian. Such penetrable properties also help the users predict what is going on in and around the space. This paper suggests that threshold space can be read as an interior space. Therefore, the author uses interior theories as a groundwork for the case study. This paper aims to reveal how permeability in threshold space within transit corridor might have an impact on its atmosphere and the people’s experience within. It also argues that permeable threshold can have a significant impact on users’ perception of the transitional space. The method used on this paper is a qualitative method, including literature review, case study, and field observation. The findings may be useful in planning threshold space in the future to create a better and safer transit experience.
The degree of filler dispersion, rheometric and mechanical properties of carbon black-filled styrene-butadiene rubber composites in the presence of alkanolamide
Authors: Surya I , Ismail H 
Published: July 2019

Abstract
The degree of filler dispersion, rheometric and mechanical properties of carbon black (CB)-filled styrene-butadiene rubber (SBR) composites in the presence of alkanolamide (ALK) were investigated using a semi-efficient sulphur accelerated vulcanisation system. The ALK was prepared from Refined Bleached Deodorized Palm Stearin and diethanolamine and added into the CB-filled SBR composites at1.0, 3.0, 5.0 and 7.0 parts per hundred rubber (phr). It was found that ALK decreased the scorch time, cure time and minimum torque of the CB-filled SBR composites. The ALK also increased the torque difference, tensile modulus, hardness, resilience and tensile strength; especially up to a 5.0 phr of loading. Due to its plasticising effect, ALK improved the degree of CB dispersion and increased the elongation at break of the CB-filled SBR composites. The crosslink density was increased by improving the degree of CB dispersion and rubber-filler interaction, respectively. The 5.0 phr of ALK was the optimum loading for CB-filled SBR composites which exhibited the highest values in tensile modulus, hardness, resilience and tensile strength.
Analysis of transport workers’ postures in the loading process of manual material handling activities by using the photogrammetric method
Authors: Hasanuddin I , Fahrizal R , Asmadi D 
Published: July 2019

Abstract
This research was conducted on the loading process of manual material handling of cup mineral water activity at PT. PA, Aceh Besar, Indonesia. With samples of 12 transport workers, the observed loading activity includes the position of lifting, walking, and loading. The loading process is done manually from the warehouse into the truck. This work is done continuously by a transport worker with each transported load reaching 48 kilograms. In a one-time loading process, a transport worker performs as many as 33 trips and the timing for each transport loading process is 20 seconds. With the work done continuously and the loads transported are weighty; therefore there are risks of experiencing musculoskeletal disorders by the transport workers. Thus, questionnaires, interviews, and observations were used as instruments to obtain data. Calculations were further conducted to analyze the postures of transport workers by using the Photogrammetric Method. The results show that the moment force calculation at L5/S1 is greatest in the position of lifting the load at 5.756,81 N; meanwhile, the NIOSH provision is 3,400 N for a normal lift limit. Hence, the solutions proposed to this problem are to reduce the load to 24 kilograms/loading and the utilization of the trolley.
The Mutual Domestication of Users and Algorithmic Recommendations on Netflix
Authors: Siles Ignacio , Espinoza-Rojas Johan , Naranjo Adrián , Tristán María Fernanda 
Published: July 2019

AbstractThis article examines the mutual domestication of users and recommendation algorithms on Netflix. Based on 25 interviews with users and an inductive analysis of their practices and profiles on the platform, we discuss five dynamics through which this mutual domestication occurs: personalization, or the ways in which individualized relationships between users and the platform are built; how algorithmic recommendations are integrated into a matrix of cultural codes; the rituals through which they are incorporated into spatial and temporal processes in daily life; the resistance to various aspects of Netflix as a form to enact agency; and the conversion or transformation of the private consumption of the platform into a public issue. The conclusion elaborates on the theoretical and analytical implications of this approach, to rethink the relationship between algorithms and culture.
Venous thromboembolism prophylaxis in thoracic surgery patients: an international survey
Authors: Shargall Yaron , Brunelli Alessandro , Murthy Sudish , Schneider Laura , Minervini Fabrizio , Bertolaccini Luca , Agzarian John , Linkins Lori-Ann , Kestenholz Peter , Li Hui , Rocco Gaetano , Girard Philippe , Venuta Federico , Samama Marc , Scarci Marco , Anraku Masaki , Falcoz Pierre-Emmanuel , Kirk Alan , Solli Piergiorgio , Hofstetter Wayne , Okumura Meinoshin , Douketis James , Litle Virginia 
Published: July 2019

AbstractOBJECTIVESVenous thromboembolic events (VTE) after thoracic surgery (TS) can be prevented with mechanical and chemical prophylaxis. Unlike other surgical specialties, TS lacks evidence-based guidelines. In the process of developing these guidelines, an understanding of the current prophylaxis methods practiced internationally is necessary and is described in this article.METHODSA 26-item survey was distributed to members of the European Society of Thoracic Surgeons (ESTS), American Association of Thoracic Surgery (AATS), Japanese Association for Chest Surgery (JACS) and Chinese Society for Thoracic and Cardiovascular Surgery (CSTCS) electronically or in person. Participants were asked to report their current prophylaxis selection, timing of initiation and duration of prophylaxis, perceived risk factors and the presence and adherence to institutional VTE guidelines for patients undergoing TS for malignancies.RESULTSIn total, 1613 surgeons anonymously completed the survey with an overall 36% response rate. Respondents were senior surgeons working in large academic hospitals (≥70%, respectively). More than 83.5% of ESTS, AATS and JACS respondents report formal TS thromboprophylaxis protocols in their institutions, but 53% of CSTCS members report not having such a protocol. The regions varied in the approaches utilized for VTE prophylaxis, the timing of initiation perioperatively and the use and type of extended prophylaxis. Respondents reported that multiple risk factors and sources of information impact their VTE prophylaxis decision-making processes, and these factors vastly diverge regionally.CONCLUSIONSThere is little agreement internationally on the optimal approach to thromboprophylaxis in the TS population, and guidelines will be helpful and vastly welcomed.
Mimosa caesalpiniifolia Benth. adapts to rhizobia populations with differential taxonomy and symbiotic effectiveness outside of its location of origin
Authors: de Oliveira Isabelly Santos Rosado , Jesus Ederson da Conceição , Ribeiro Thiago Gonçalves , da Silva Maura Santos Reis de Andrade , Tenorio Jairo de Oliveira , Martins Lindete Míria Vieira , de Faria Sérgio Miana 
Published: July 2019

Abstract
Mimosa caesalpiniifolia Benth. is a legume native to the semi-arid region of Brazil, in the Northeast. Its successful adaptation to other locations, such as the Atlantic Forest in the Southeast region, may be related to its ability to establish symbiosis with nitrogen-fixing bacteria, especially β-rhizobia of the genus Paraburkholderia. The objective of this work was to determine whether M. caesalpiniifolia adapted to bacterial symbionts in locals where it was introduced. Bacteria were recovered from nodules of M. caesapiniifolia and characterized at the genetic level by BOX-PCR, and sequencing of the 16S rRNA, recA, nifH, and nodC genes. Their symbiotic effectiveness was assessed under axenic conditions. M. caesalpiniifolia nodulated mainly with P. sabiae and a few strains of Rhizobium in the Southeast. On the other hand, the symbionts found in the Northeast were, predominantly, P. diazotrophica. Regardless of its origin, P. diazotrophica promoted a superior accumulation of plant biomass than other bacterial species. The results presented here demonstrate the ability of M. caesalpiniifolia to adapt to bacterial populations outside its location of origin, and indicate that, in this case, the symbiotic effectiveness was associated to the taxonomical classification of the strains.
Differences in soil microbial response to anthropogenic disturbances in Sanjiang and Momoge Wetlands, China
Authors: Wei Jing , Gao Jie , Wang Na , Liu Ying , Wang Yuwan , Bai Zhihui , Zhuang Xuliang , Zhuang Guoqiang 
Published: July 2019

Abstract
To understand the response of soil microbial communities in different types of wetlands to anthropogenic disturbances, this study focused on a freshwater wetland (Sanjiang Wetland) and a salt marsh (Momoge Wetland) and sampled cultivated, degraded, and natural soils in these wetlands. High-throughput sequencing was applied to characterize the soil microbial community composition, and physicochemical properties, including pH, total nitrogen, total carbon, and soil water content (SWC), were measured. The results revealed that the total nitrogen, total carbon, and SWC were significantly lower in disturbed soil in the freshwater wetland but higher in the salt marsh. Generally, under anthropogenic disturbances, microbial community diversity decreased in the freshwater wetland and increased in the salt marsh. The bacterial community structure in the salt marsh was more sensitive than that in the freshwater wetland, while the fungal community structure in the freshwater wetland was more susceptible than that in the salt marsh. The results of indicator value analyses revealed specific issues in two wetlands, such as methane generation and anoxic conditions. This study shows that soil microbiomes in two types of wetlands respond differently to human activities, which implies that the type of native wetlands should be considered in the exploitation of wetlands.
Longitudinal Associations Between Short-Term, Repeated, and Sustained Arts Engagement and Well-Being Outcomes in Older Adults
Authors: Tymoszuk Urszula , Perkins Rosie , Spiro Neta , Williamon Aaron , Fancourt Daisy 
Published: July 2019

Abstract

Objectives
This study investigated whether frequency of receptive arts engagement over 10 years contributes to experienced, evaluative, and eudaimonic well-being in older adults.

Methods
We used repeated data of 3,188 respondents from Waves 2–7 (2004/2005–2014/2015) of the English Longitudinal Study of Ageing. We examined longitudinal associations between short-term (frequent engagement at one wave), repeated (frequent engagement at 2–3 waves), and sustained (frequent engagement at 4–6 waves) arts engagement and experienced, evaluative and eudaimonic well-being. We fitted linear and logistic regression models adjusted for baseline well-being and a number of sociodemographic, economic, health, and social engagement factors.

Results
In the fully adjusted models, short-term engagement was not longitudinally associated with well-being, but repeated engagement with the theater/concerts/opera and museums/galleries/exhibitions was associated with enhanced eudaimonic well-being, and sustained engagement with these activities was associated with greater experienced, evaluative, and eudaimonic well-being.

Discussion
Long-term frequent engagement with certain arts activities is associated with higher levels of happiness, life satisfaction, self-realization, and control/autonomy in older adults. These findings suggest that policies that facilitate older adults’ access to arts venues and activities, and support their continued engagement with them, may help to promote happy, fulfilling lives of an increasing segment of the population.
Assessing scalability of an intervention: why, how and who?
Authors: Zamboni Karen , Schellenberg Joanna , Hanson Claudia , Betran Ana Pilar , Dumont Alexandre 
Published: July 2019

AbstractPublic health interventions should be designed with scale in mind, and researchers and implementers must plan for scale-up at an early stage. Yet, there is limited awareness among researchers of the critical value of considering scalability and relatively limited empirical evidence on assessing scalability, despite emerging methodological guidance. We aimed to integrate scalability considerations in the design of a study to evaluate a multi-component intervention to reduce unnecessary caesarean sections in low- and middle-income countries. First, we reviewed and synthesized existing scale up frameworks to identify relevant dimensions and available scalability assessment tools. Based on these, we defined our scalability assessment process and adapted existing tools for our study. Here, we document our experience and the methodological challenges we encountered in integrating a scalability assessment in our study protocol. These include: achieving consensus on the purpose of a scalability assessment; and identifying the optimal timing of such an assessment, moving away from the concept of a one-off assessment at the start of a project. We also encountered tensions between the need to establish the proof of principle, and the need to design an innovation that would be fit-for-scale. Particularly for complex interventions, scaling up may warrant rigorous research to determine an efficient and effective scaling-up strategy. We call for researchers to better incorporate scalability considerations in pragmatic trials through greater integration of impact and process evaluation, more stringent definition and measurement of scale-up objectives and outcome evaluation plans that allow for comparison of effects at different stages of scale-up.
Big Data for Nutrition Research in Pediatric Oncology: Current State and Framework for Advancement
Authors: Phillips Charles A , Pollock Brad H 
Published: July 2019

AbstractRecognition and treatment of malnutrition in pediatric oncology patients is crucial because it is associated with increased morbidity and mortality. Nutrition-relevant data collected from cancer clinical trials and nutrition-specific studies are insufficient to drive high-impact nutrition research without augmentation from additional data sources. To date, clinical big data resources are underused for nutrition research in pediatric oncology. Health-care big data can be broadly subclassified into three clinical data categories: administrative, electronic health record (including clinical data research networks and learning health systems), and mobile health. Along with -omics data, each has unique applications and limitations. We summarize the potential use of clinical big data to drive pediatric oncology nutrition research and identify key scientific gaps. A framework for advancement of big data utilization for pediatric oncology nutrition research is presented and focuses on transdisciplinary teams, data interoperability, validated cohort curation, data repurposing, and mobile health applications.
Medical Risk and Resilience in Adolescents and Young Adults With Epilepsy: The Role of Self-Management Self-Efficacy
Authors: Engel Melissa L , Barnes Andrew J , Henry Thomas R , Garwick Ann E , Scal Peter B 
Published: July 2019

AbstractObjectiveMedical factors that put adolescents and young adults (AYA) with epilepsy at risk for poor health-related quality of life (HRQOL) are well-established. Less known is whether medical risk is associated with decreases in global psychological well-being and how self-management self-efficacy might contribute to resilience. The current study seeks to (a) examine the relationship between medical risk and both HRQOL and psychological well-being in AYA with epilepsy and (b) investigate the potential moderating role of self-management self-efficacy.MethodsA sample of 180 AYA with epilepsy, aged 13–24 years, was recruited from clinic and community settings and completed questionnaires. A medical risk gradient composed of seizure frequency, antiepileptic drugs, and other health problems was created. HRQOL, psychological well-being, and self-management self-efficacy were assessed.ResultsMedical risk was negatively associated with HRQOL, such that youth with greater risk scores reported lower HRQOL (r = −0.35, p < .01). However, there was no significant relationship between medical risk and psychological well-being (r = −0.08, p = .31). Self-efficacy was positively correlated with HRQOL and well-being (r = 0.50, p < .01; r = 0.48, p < .01). A moderation effect was detected, such that the positive effect of self-efficacy on HRQOL differed across medical risk levels.ImplicationsCultivating psychological strengths, as opposed to solely addressing medical problems, may be a promising intervention target when treating AYA with epilepsy, including those navigating healthcare transitions. Self-efficacy predicted HRQOL at most levels of risk, suggesting an important modifiable intrinsic factor that may promote resilience.