bluuebunny/crossref_metadata_2025_split huggingface dataset:
An effective procedure for feature subset selection in logistic regression based on information criteria
Authors: Civitelli Enrico , Lapucci Matteo , Schoen Fabio , Sortino Alessio 
Published: June 2021

AbstractIn this paper, the problem of best subset selection in logistic regression is addressed. In particular, we take into account formulations of the problem resulting from the adoption of information criteria, such as AIC or BIC, as goodness-of-fit measures. There exist various methods to tackle this problem. Heuristic methods are computationally cheap, but are usually only able to find low quality solutions. Methods based on local optimization suffer from similar limitations as heuristic ones. On the other hand, methods based on mixed integer reformulations of the problem are much more effective, at the cost of higher computational requirements, that become unsustainable when the problem size grows. We thus propose a new approach, which combines mixed-integer programming and decomposition techniques in order to overcome the aforementioned scalability issues. We provide a theoretical characterization of the proposed algorithm properties. The results of a vast numerical experiment, performed on widely available datasets, show that the proposed method achieves the goal of outperforming state-of-the-art techniques.
Gastric and urinary bladder pressures correlate with intra-abdominal pressure in patients with morbid obesity
Authors: Hamoud Shadi , Abdelgani Siham , Mekel Michal , Kinaneh Safa , Mahajna Ahmad 
Published: June 2021

AbstractIntra-abdominal pressure (IAP) affects cardio-respiratory and hemodynamic parameters and can be measured directly or indirectly by measuring gastric or urinary bladder pressure. The aim of this study was to investigate the correlation between IAP, gastric pressure and urinary bladder pressure in patients with morbid obesity, at normal and elevated levels of IAP in two positions. As well, to examine the effects of increasing IAP and patient's position on hemodynamic and respiratory parameters. Twelve patients undergoing laparoscopic bariatric surgery were included. IAP, gastric pressure, and urinary bladder pressure were measured while patients were in the supine position and after 45° anti-Trendelenburg tilt. Mean inspiratory pressure, peak inspiratory pressure, and tidal volume were recorded and assessed. In supine position; directly measured IAP was 9.1 ± 1.8 mmHg, compared to 10 ± 3.6 and 8.9 ± 2.9 mmHg in the stomach and bladder, respectively. Increasing IAP to 15 mmHg resulted in an increased gastric pressure of 17 ± 3.8 mmHg, and urinary bladder pressure of 14.8 ± 3.9 mmHg. Gastric and urinary bladder pressures strongly correlated with IAP (R = 0.875 and 0.847, respectively). With 45° anti-Trendelenburg tilt; directly measured IAP was 9.4 ± 2.2 mmHg, and pressures of 10.8 ± 3.8 mmHg and 9.2 ± 3.8 mmHg were measured in the stomach and the bladder, respectively. Increasing IAP to 15 mmHg resulted in elevating gastric and bladder pressures to 16.6 ± 5.3 and 13.3 ± 4 mmHg, respectively. Gastric and urinary bladder pressures had good correlation with IAP (R = 0.843 and 0.819, respectively). Changing patient position from supine to 45° anti-Trendelenburg position resulted in decreased mean and peak inspiratory pressures, and increased tidal volume. Basal IAP is high in patients with morbid obesity. IAP shows positive correlation to gastric and urinary bladder pressures at both normal and elevated levels of IAP. Anti-Trendelenburg tilt of mechanically ventilated morbidly obese patients resulted in favorable effects on respiratory parameters.Trial Registration: The study was retrospectively registered in the NIH registry. Registration number is pending.
Exploring Fear of Cancer Recurrence in a Sample of Heterogeneous Distressed Cancer Patients with and Without a Psychiatric Disorder
Authors: Bisseling Else M. , Compen Félix R. , Schellekens Melanie P. J. , Thewes Belinda , Speckens Anne E. M. , van der Lee Marije L. 
Published: June 2021

AbstractFear of Cancer Recurrence (FCR) is a concern among cancer patients. Recent insights suggest that FCR should be viewed as a distinct syndrome. However, few studies have explored its overlap with psychiatric morbidity. We examined this overlap in a sample of distressed cancer patients. Self-referred patients (n = 245) were assessed with the Structured Clinical Interview for DSM-IV-TR Axis-I disorders and the Fear of Cancer Recurrence Inventory-Short Form. Proportions of patients with and without a psychiatric disorder meeting validated cut-offs for screening and clinically relevant FCR were compared. The prevalence of psychiatric disorders was 36%. Clinically relevant FCR was found in 198 patients (81%). Patients with a current psychiatric disorder reported clinically relevant FCR more frequently (89%) compared to those with no disorder (77%). Of patients reporting clinically relevant FCR, the majority (61%) did not additionally meet the criteria for a psychiatric disorder. These findings suggest that there should be particular attention for patients with elevated levels of FCR, warranting FCR-specific treatment.Trial registry number Clinicaltrials.gov NCT02138513
Refugee, Migrant and Asylum Seekers’ Experience of Accessing and Receiving Primary Healthcare in a UK City of Sanctuary
Authors: Scott Rosie , Forde Emer , Wedderburn Clare 
Published: June 2021

AbstractThe World Health Organisation estimate there are about 1 billion migrants in the world today. The scale of population movement and a global refugee crisis presents an enormous challenge for healthcare provision, and too often the specific health needs of refugees and migrants are not met. This study assessed refugee, asylum seeker and vulnerable migrants’ (AMRs') experience of front line primary healthcare in a region of the United Kingdom designated as a ‘City of Sanctuary’. A questionnaire study explored the views of people seeking refuge and third sector workers supporting them. The majority of AMRs were registered with a GP and positive about their consultations. The views of third sector workers provided a less favourable window into their experience of primary care. In conclusion, the work highlighted patchy experience of primary care, even in a region of the UK designated as a ‘City of Sanctuary’ for people seeking refuge. There is a need for further education of rights to care in the UK, information for people on how to navigate local healthcare systems, consistent access to routine health checks and translation services.
Isomonodromic Laplace transform with coalescing eigenvalues and confluence of Fuchsian singularities
Authors: Guzzetti Davide 
Published: June 2021

AbstractWe consider a Pfaffian system expressing isomonodromy of an irregular system of Okubo type, depending on complex deformation parameters$$u=(u_1,\ldots ,u_n)$$u=(u1,…,un), which are eigenvalues of the leading matrix at the irregular singularity. At the same time, we consider a Pfaffian system of non-normalized Schlesinger-type expressing isomonodromy of a Fuchsian system, whose poles are the deformation parameters$$u_1,\ldots ,u_n$$u1,…,un. The parameters vary in a polydisc containing acoalescence locus for the eigenvaluesof the leading matrix of the irregular system, corresponding toconfluence of the Fuchsian singularities. We construct isomonodromicselected and singular vector solutionsof the Fuchsian Pfaffian system together with theirisomonodromic connection coefficients, so extending a result of Balser et al. (I SIAM J Math Anal 12(5): 691–721, 1981) and Guzzetti (Funkcial Ekvac 59(3): 383–433, 2016) to the isomonodromic case, including confluence of singularities. Then, we introduce an isomonodromic Laplace transform of the selected and singular vector solutions, allowing to obtain isomonodromic fundamental solutions for the irregular system, and their Stokes matrices expressed in terms of connection coefficients. These facts, in addition to extending (Balser et al. in I SIAM J Math Anal 12(5): 691–721, 1981; Guzzetti in Funkcial Ekvac 59(3): 383–433, 2016) to the isomonodromic case (with coalescences/confluences), allow to prove by means of Laplace transform the main result of Cotti et al. (Duke Math JarXiv:1706.04808, 2017), namely the analytic theory ofnon-generic isomonodromic deformationsof the irregular system with coalescing eigenvalues.
A Poset-Generalizability Method for Human Development Indicators
Authors: Comim Flavio 
Published: June 2021

AbstractThe paper introduces a poset-generalizability perspective for analysing human development indicators. It suggests a new method for identifying admissibility of different informational spaces and criteria in human development analysis. From its inception, the Capability Approach has argued for informational pluralism in normative evaluations. But in practice, it has turned its back to other (non-capability) informational spaces for being imperfect, biased or incomplete and providing a mere evidential role in normative evaluations. This paper offers the construction of a proper method to overcome this shortcoming. It combines tools from poset analysis and generalizability theory to put forward a systematic categorization of cases with different informational spaces. It provides illustrations by using key informational spaces, namely, resources, rights, subjective well-being and capabilities. The offered method is simpler and more concrete than mere human development guidelines and at the same time it avoids results based on automatic calculations. The paper concludes with implications for human development policies and an agenda for further work.
The place beyond the trees: renewed excavations of the Middle Stone Age deposits at Olieboomspoort in the Waterberg Mountains of the South African Savanna Biome
Authors: Val A. , de la Peña P. , Duval M. , Bansal S. , Colino F. , Culey J. , Hodgskiss T. , Morrissey P. , Murray A. , Murungi M. , Neumann F.H. , Shadrach K. , Thomsen K.J. , van der Ryst M. , Witelson D.M. , Zhao J.X. , Stratford D. 
Published: June 2021

AbstractOlieboomspoort is one of the few rock shelters in the vast interior of southern Africa documenting pulses of occupation from the Acheulean until the end of the Later Stone Age. Revil Mason excavated the site in 1954 and attributed the large Middle Stone Age (MSA) lithic assemblage to his middle phase of the so-called Pietersburg Industry. Recent work at the site has focused on the Holocene layers, but little is known about the earlier phases of shelter use. Here, we provide some background to the shelter, give a history of past research and present initial results following renewed fieldwork at the site. The MSA deposits contain abundant lithic artefacts and ochre, and we present an initial description of these cultural remains. Palynological analysis reveals limited potential for palaeoenvironmental reconstructions, but some faunal remains indicate open grasslands. We dated two equid teeth that provided highly consistent combined U-series-ESR estimates, resulting in a mean age of 150 ± 14 ka (1σ). Even when considering potential sources of uncertainty such as variations in water-intake, these fossils can securely be dated to Marine Isotopic Stage 6. Our reappraisal of site formation processes highlights the fact that the archaeological assemblage is strongly time-averaged. We discuss these different results in the context of a recently rekindled interest in the so-called Pietersburg Industry.
Modern brackish bryostromatolites (“bryoliths”) from Zeeland (Netherlands)
Authors: Harrison G. William M. , Claussen Anna Lene , Schulbert Christian , Munnecke Axel 
Published: June 2021

AbstractBryostromatolites are found in stressed environments from the Paleozoic to the Recent. They are formed by alternating layers of bryozoans and microbes. This study investigates recent bryostromatolites in brackish ponds in the Netherlands to better understand ancient analogues and the environments which hosted them. They formed a fringing reef at the site Ronde Weel and a barrier reef at Kaaskenswater. The ponds had low biodiversity with only one bivalve species, two gastropod species, one ostracod species, and three diatom species comprising most of the easily fossilizable taxa; one isopod species, one decapod species, and two polychaete species were also present. Observations of microbial layers and cementation practices indicate that an alternation of bryozoan-favouring conditions and microbe-favouring conditions is essential to forming bryostromatolites. The collected bryostromatolites only had tiny living bryozoan patches. Water tests confirmed a brackish environment but with enriched arsenic and titanium concentrations and periodic euxinia. The extreme environment explains the lack of biodiversity and may provide information about the environments in which past bryostromatolites formed.
Examining Diversity: a Content Analysis of Cancer Depictions on Primetime Scripted Television
Authors: Kim Grace 
Published: June 2021

AbstractEntertainment programming provides a unique opportunity for cancer education, particularly for higher risk racial and ethnic minority groups. Cultural relevancy is key to quality narrative cancer communication, and minorities often prefer media content produced by and featuring members of their own cultural in-group. However, little is known about whether cancer depictions or the television programs they appear in are culturally diverse. Using media content analysis, this study aims to assess the cultural diversity of cancer depictions on primetime scripted television to reveal opportunities to improve cancer education through entertainment. Indicators used to assess cultural diversity at the program level and depiction levels were collected. Out of 111 television programs, 10 (9.01%) programs mentioned cancer, from which 37 cancer depictions were identified. However, the majority of cancer depictions involved White patients and White health providers. Depictions of coping and treatment also dominated with less than 10% of depictions discussing cancer prevention. These patterns reveal a missed opportunity in existing cancer narratives on primetime scripted television and a lack of representation of cultural, social, and environmental factors that affect the health of minority communities, who need to hear these messages the most.
Application of nature-inspired algorithms and artificial neural network in waterflooding well control optimization
Authors: Ng Cuthbert Shang Wui , Jahanbani Ghahfarokhi Ashkan , Nait Amar Menad 
Published: June 2021

AbstractWith the aid of machine learning method, namely artificial neural networks, we established data-driven proxy models that could be utilized to maximize the net present value of a waterflooding process by adjusting the well control injection rates over a production period. These data-driven proxies were maneuvered on two different case studies, which included a synthetic 2D reservoir model and a 3D reservoir model (the Egg Model). Regarding the algorithms, we applied two different nature-inspired metaheuristic algorithms, i.e., particle swarm optimization and grey wolf optimization, to perform the optimization task. Pertaining to the development of the proxy models, we demonstrated that the training and blind validation results were excellent (with coefficient of determination,R2being about 0.99). For both case studies and the optimization algorithms employed, the optimization results obtained using the proxy models were all within 5% error (satisfied level of accuracy) compared with reservoir simulator. These results confirm the usefulness of the methodology in developing the proxy models. Besides that, the computational cost of optimization was significantly reduced using the proxies. This further highlights the significant benefits of employing the proxy models for practical use despite being subject to a few constraints.
Ecosystem restoration as a boundary object, demonstrated in a large-scale landscape restoration project in the Dovre Mountains, Norway
Authors: Aasetre Jørund , Hagen Dagmar , Bye Kristine 
Published: June 2021

AbstractCoordinating and implementing ecosystem restoration projects can be challenging when the professions involved have differing perceptions of ecological restoration and implementation in practice. To overcome these barriers in complex restoration projects, we suggest analysing ecosystem restoration as a boundary object, a concept drawn from the field of science and technology studies. We use a large scale restoration project in the Dovre Mountains of Norway to demonstrate the validity of using the boundary object concept in this context. The restoration involves a former military training area where the goal of the project was to protect and restore the environment and allow for civilian use. We examine how the different professions developed sufficient mutual understanding to make the project work. In particular, we explore the extent to which the perceptions of different professions overlap, the diversity of the perceptions in the project and how this might influence the outcome of the restoration. The boundary object concept offers potential to help improve restoration quality and reduce conflicts.
Polyconvex hyperelastic modeling of rubberlike materials
Authors: Suchocki Cyprian , Jemioło Stanisław 
Published: June 2021

AbstractIn this work a number of selected, isotropic, invariant-based hyperelastic models are analyzed. The considered constitutive relations of hyperelasticity include the model by Gent (G) and its extension, the so-called generalized Gent model (GG), the exponential-power law model (Exp-PL) and the power law model (PL). The material parameters of the models under study have been identified for eight different experimental data sets. As it has been demonstrated, the much celebrated Gent’s model does not always allow to obtain an acceptable quality of the experimental data approximation. Furthermore, it is observed that the best curve fitting quality is usually achieved when the experimentally derived conditions that were proposed by Rivlin and Saunders are fulfilled. However, it is shown that the conditions by Rivlin and Saunders are in a contradiction with the mathematical requirements of stored energy polyconvexity. A polyconvex stored energy function is assumed in order to ensure the existence of solutions to a properly defined boundary value problem and to avoid non-physical material response. It is found that in the case of the analyzed hyperelastic models the application of polyconvexity conditions leads to only a slight decrease in the curve fitting quality. When the energy polyconvexity is assumed, the best experimental data approximation is usually obtained for the PL model. Among the non-polyconvex hyperelastic models, the best curve fitting results are most frequently achieved for the GG model. However, it is shown that both the G and the GG models are problematic due to the presence of the locking effect.
BSO20: efficient brain storm optimization for real-parameter numerical optimization
Authors: Xu Peilan , Luo Wenjian , Lin Xin , Cheng Shi , Shi Yuhui 
Published: June 2021

AbstractBrain storm optimization (BSO) is an emerging global optimization algorithm. The primary idea is to divide the population into different clusters, and offspring are generated within a cluster or between two clusters. However, the problems of inefficient clustering strategy and insufficient exploration exist in BSO. In this paper, a novel and efficient BSO is proposed, called BSO20 (proposed in 2020). BSO20 pays attention to both the clustering strategy and the mutation strategy. First, we propose a hybrid clustering strategy, which combines two clustering strategies, i.e., nearest-better clustering and random grouping strategy. The size of the subpopulation clustered by two strategies is dynamically adjusted as the population evolves. Second, a modified mutation strategy is used in BSO20 to share information within a cluster or among multiple clusters to enhance the ability of exploration. BSO20 is tested on the problems of the 2017 IEEE Congress on Evolutionary Computation competition on real parameter numerical optimization. BSO20 is compared with several variants of BSO and two variants of particle swarm optimization, and the experimental results show that BSO20 is competitive.
DMPs-based skill learning for redundant dual-arm robotic synchronized cooperative manipulation
Authors: Lu Zhenyu , Wang Ning , Shi Donghao 
Published: June 2021

AbstractDual-arm robot manipulation is applicable to many domains, such as industrial, medical, and home service scenes. Learning from demonstrations is a highly effective paradigm for robotic learning, where a robot learns from human actions directly and can be used autonomously for new tasks, avoiding the complicated analytical calculation for motion programming. However, the learned skills are not easy to generalize to new cases where special constraints such as varying relative distance limitation of robotic end effectors for human-like cooperative manipulations exist. In this paper, we propose a dynamic movement primitives (DMPs) based skills learning framework for redundant dual-arm robots. The method, with a coupling acceleration term to the DMPs function, is inspired by the transient performance control of Barrier Lyapunov Functions. The additional coupling acceleration term is calculated based on the constant joint distance and varying relative distance limitations of end effectors for object-approaching actions. In addition, we integrate the generated actions in joint space and the solution for a redundant dual-arm robot to complete a human-like manipulation. Simulations undertaken in Matlab and Gazebo environments certify the effectiveness of the proposed method.
GPU-Based Dynamic Hyperspace Hash with Full Concurrency
Authors: Ren Zhuo , Gu Yu , Li Chuanwen , Li FangFang , Yu Ge 
Published: June 2021

AbstractHyperspace hashing which is often applied to NoSQL data-bases builds indexes by mapping objects with multiple attributes to a multidimensional space. It can accelerate processing queries of some secondary attributes in addition to just primary keys. In recent years, the rich computing resources of GPU provide opportunities for implementing high-performance HyperSpace Hash. In this study, we construct a fully concurrent dynamic hyperspace hash table for GPU. By using atomic operations instead of locking, we make our approach highly parallel and lock-free. We propose a special concurrency control strategy that ensures wait-free read operations. Our data structure is designed considering GPU specific hardware characteristics. We also propose a warp-level pre-combinations data sharing strategy to obtain high parallel acceleration. Experiments on an Nvidia RTX2080Ti GPU suggest that GHSH performs about 20-100X faster than its counterpart on CPU. Specifically, GHSH performs updates with up to 396 M updates/s and processes search queries with up to 995 M queries/s. Compared to other GPU hashes that cannot conduct queries on non-key attributes, GHSH demonstrates comparable building and retrieval performance.