nils-herrmann/clean_scirepeval huggingface dataset:
Adaptive robust motion control of a fast forging hydraulic press considering the nonlinear uncertain accumulator model
Venue: J. Syst. Control. Eng.

This article focuses on the high performance motion control of an accumulator assistant fast forging hydraulic press. As the accumulator has a significant impact on the motion control performance of the fast forging hydraulic press, the dynamic and static characteristics of the accumulator are studied and a simplified mathematical model is applied in the motion controller design. To hold the nonlinear parameter uncertainty associated with the accumulator model, a nonlinear damping regulator and a nonlinear robust feedback are synthesized based on the simplified mathematical model. The virtual control law "lumped flow" is proposed to act as the equivalent input of the fast forging hydraulic press, which successfully solves the decoupling problem and makes the motion controller design feasible. And the most economical distribution scheme is finally applied to synthesize the actual control law for each fast forging valve. In consideration of the parametric uncertainties and uncertain nonlinearities appearing in the mathematical model of the accumulator assistant fast forging hydraulic press, the discontinuous projection based adaptive robust control is extended to synthesize the motion controller. Both simulation and experiment results demonstrate that with the proposed motion controller, the transient performance and final tracking accuracy are guaranteed although the system is subjected to various model uncertainties coming from both parametric uncertainties and uncertain nonlinearities. Furthermore, with the proposed nonlinear damping regulator, the influence of the accumulator can be well compensated and the control performance is improved.
High performance motion control of the hydraulic press based on an extended fuzzy disturbance observer
Venue: J. Syst. Control. Eng.

This article focuses on the high performance motion control problem of the hydraulic press. Smooth and precise motion control of the hydraulic press is hardly achieved due to the complex external disturbances which typically consist of the deformation force and friction force. An extended fuzzy disturbance observer is first constructed to estimate and compensate the hardly modeled deformation force. The proposed extended fuzzy disturbance observer differs with the fuzzy disturbance observer on parameter adaptation; the fuzzy disturbance observer is commonly driven by the disturbance observer error, while the designed extended fuzzy disturbance observer is driven by the disturbance observer error and the motion tracking error together. The nonlinear cascade controller is further applied to synthesize the motion controller considering the particular work principle of the separate meter in separate meter out drive system adopted in the hydraulic press. The outer motion tracking loop of the nonlinear cascade controller is designed based on the sliding mode control with the desired driving force as control output, and the inner pressure control loop of the nonlinear cascade controller uses the backstepping technique to make the separate meter in separate meter out drive system track the desired driving force precisely. The minimum equivalent load criterion is proposed to act as the bridge linking the outer and inner loop. The stability of the overall closed loop system is proved based on the Lyapunov theory. The performance of the proposed scheme is verified through the simulations and experiments. The results demonstrate that the nonlinear cascade controller together with the extended fuzzy disturbance observer provides an excellent motion tracking performance in the presence of complex external disturbances.
Nonlinear motion control of the hydraulic press based on an extended piecewise disturbance observer
Venue: J. Syst. Control. Eng.

This article presents a nonlinear motion controller based on an extended piecewise disturbance observer to track desired motion trajectory for the hydraulic press. The proposed extended piecewise disturbance observer accounts for external load by applying the double drive parameter adaptation. Considering the special work principle of the separate meter in separate meter out drive system adopted in the hydraulic press, the nonlinear cascade controller is extended to synthesize the motion controller. The outer motion tracking loop uses the sliding mode control to compensate for load estimation error with desired driving force as control output. The inner pressure control loop is designed based on the backstepping technique. The minimum equivalent load criterion is proposed to function as the bridge linking the outer and inner loops. The stability of the overall close loop system is proved based on the Lyapunov theory. Both simulation and experiment results demonstrate that the proposed nonlinear cascade controller, together with the extended piecewise disturbance observer, provides an excellent motion tracking performance for the hydraulic press in the presence of complex external load, which typically consists of the deformation force and the friction.
An Energy Matching Method for Hydraulic Press Group Based on Operation Load Profile

To improve the energy efficiency and reduce the energy consumption of hydraulic press, a partitioned control method for grouped hydraulic presses is proposed. A drive system composed of several motor pumps is the only drive system to provide energy for all hydraulic presses in a group, which is partitioned into several drive zones according to the load profiles. Each drive zone with installed power matching the needed power of an operation is employed by grouped hydraulic presses in the same operation. Different drive zones provide energy for each hydraulic press in the order of operations, which obtains great energy saving effect.
Alopecia in general medicine.
Venue: Clinical medicine

Appreciation of different types of hair loss (alopecia) that may be encountered in hospital medicine is important to ensure accurate diagnosis and management, identify underlying medical conditions or treatments that may present with increased hair loss, recognise autoimmune alopecias and their associations, and understand the significant psychological impact of hair loss on an individual. This article discusses common causes of hair loss, as well as those conditions that may be associated with systemic disease, relevant to a general physician.
Understanding Factors Associated with Postpartum Visit Attendance and Contraception Choices: Listening to Low Income Postpartum Women and Health Care Providers
Venue: Maternal and Child Health Journal

While there is considerable variability with respect to attendance at the postpartum visit, not much is known about women's preferences with respect to postpartum care. Likewise, there is also limited information on providers' practices regarding the postpartum visit and care including the delivery of contraception. To understand and address deficits in the delivery and utilization of postpartum care, we examined the perceptions of low income postpartum women with respect to barriers to and preferences for the timing and location of the postpartum visit and receipt of contraception. We also examined providers' current prenatal and postnatal care practices for promoting the use of postpartum care and their attitudes toward alternative approaches for delivering contraceptive services in the postpartum period.  Qualitative face to face interviews were completed with 20 postpartum women and in depth qualitative phone interviews were completed with 12 health care providers who had regular contact with postpartum women. Interviews were coded using Atlas.ti software and themes were identified.  Women believed that receiving care during the postpartum period was an important resource for monitoring physical and mental health and also strongly supported the provision of contraception earlier than the 6 week postpartum visit. Providers reported barriers to women's use of postpartum care on the patient, provider, and system levels. However, providers were receptive to exploring new clinical practices that may widen the reach of postpartum care and increase access to postpartum contraception.  Approaches that increase the flexibility and convenience of postpartum care and the delivery of postpartum contraception may increase the likelihood that women will take advantage of essential postpartum services.
Survey of Obstetric Care and Cesarean Delivery Rates in Shanghai, China.
Venue: Birth

China has one of the highest cesarean delivery rates in the world, with most cesareans done without indication.  Observation of how perinatal care is delivered in a range of Shanghai hospitals was done to gain insight into the 50 percent cesarean delivery rate. A mixed methods approach combined a descriptive structured survey of obstetric services with standardized interview with obstetricians and qualitative observation of obstetric services in six different Shanghai obstetric facilities.  The volume was extremely high: physicians in public hospitals routinely saw up to 80 120 prenatal patients per day. Frequent prenatal testing substituted for time spent in patient doctor interactions. Family members were not allowed in delivery wards where women labored alone. Obstetrics services had low levels of nursing support and anesthesia for labor. Physical space favored rapid surgical turnover over longer labor. Physicians reported practical incentives to perform cesarean sections.  Cesarean delivery was an efficient way to move patients through the systems observed, given the staffing and physical limitations of the public facilities. Physicians reported that patients and families perceived cesarean delivery as safer. Physicians also reported fear of charges of malpractice, for which they might be found to be financially liable or in physical danger. Societal expectations are high, and in a "one child" society, perception that cesarean section was safer may also have driven cesarean rates. Given the end of the One Child Policy, the preference for cesarean delivery may change.
The Ohio Gestational Diabetes Postpartum Care Learning Collaborative: Development of a Quality Improvement Initiative to Improve Systems of Care for Women
Venue: Maternal and Child Health Journal

To improve clinical practice and increase postpartum visit Type 2 diabetes mellitus (T2DM) screening rates in women with a history of gestational diabetes mellitus (GDM)  We recruited clinical sites with at least half of pregnant patients enrolled in Medicaid to participate in an 18 month quality improvement (QI) project. To support clinical practice changes, we developed provider and patient toolkits with educational and clinical practice resources. Clinical subject matter experts facilitated a learning network to train sites and promote discussion and learning among sites. Sites submitted data from patient chart reviews monthly for key measures that we used to provide rapid cycle feedback. Providers were surveyed at completion regarding toolkit usefulness and satisfaction.  Of fifteen practices recruited, twelve remained actively engaged. We disseminated more than 70 provider and 2345 patient toolkits. Documented delivery of patient education improved for timely GDM prenatal screening, reduction of future T2DM risk, smoking cessation, and family planning. Sites reported toolkits were useful and easy to use. Of women for whom postpartum data were available, 67 had a documented postpartum visit and 33 had a postpartum T2DM screen. Lack of information sharing between prenatal and postpartum care providers was are barriers to provision and documentation of care. Conclusions for Practice QI and toolkit resources may improve the quality of prenatal education. However, postpartum care did not reach optimal levels. Future work should focus on strategies to support coordination of care between obstetrical and primary care providers.
Experiences of opioid dependent women in their prenatal and postpartum care: Implications for social workers in health care
Venue: Social work in health care

The prevalence of prescription opioid abuse has increased nationally in the last decade with increased incidence rates reported among pregnant women. This was a qualitative study designed to understand the role of pregnant women with an opioid use disorder participating in medical decision making regarding their prenatal care while addressing their addiction. Group interviews were conducted with postpartum women who self identified as opioid dependent during their pregnancy, and the data were analyzed using Interpretative Phenomenological Analysis. Social workers in the health care setting are an integral part of the interdisciplinary team in caring for pregnant and postpartum opioid dependent women. Social workers are ideal in creating stigma reduction strategies, peer and professional supports, and comprehensive coordinated care. A social justice based practice may be a framework to utilize when caring for this unique population.
A multiple kernel learning algorithm for drug target interaction prediction
Venue: BMC Bioinformatics

BackgroundDrug target networks are receiving a lot of attention in late years, given its relevance for pharmaceutical innovation and drug lead discovery. Different in silico approaches have been proposed for the identification of new drug target interactions, many of which are based on kernel methods. Despite technical advances in the latest years, these methods are not able to cope with large drug target interaction spaces and to integrate multiple sources of biological information.ResultsWe propose KronRLS MKL, which models the drug target interaction problem as a link prediction task on bipartite networks. This method allows the integration of multiple heterogeneous information sources for the identification of new interactions, and can also work with networks of arbitrary size. Moreover, it automatically selects the more relevant kernels by returning weights indicating their importance in the drug target prediction at hand. Empirical analysis on four data sets using twenty distinct kernels indicates that our method has higher or comparable predictive performance than 18 competing methods in all prediction tasks. Moreover, the predicted weights reflect the predictive quality of each kernel on exhaustive pairwise experiments, which indicates the success of the method to automatically reveal relevant biological sources.ConclusionsOur analysis show that the proposed data integration strategy is able to improve the quality of the predicted interactions, and can speed up the identification of new drug target interactions as well as identify relevant information for the task. source code and data sets are available at www.cin.ufpe.br/~acan/kronrlsmkl/
Structural and morphological characterization of bacterial cellulose nano reinforcements prepared by mechanical route

Bacterial cellulose (BC) is a very promising material due to its high purity, good mechanical properties and thermal stability. Bacterial cellulose nanofibers (BCNF) in dry form could be used as reinforcements in hydrophobic polymer matrices like polylactic acid (PLA) or polyhydroxyalkanoates for biomedical applications. In this work, BCNF were obtained by simple eco friendly mechanical treatments applied to BC pellicles, consisting in successive wet and dry mechanical disintegration steps or only wet mechanical disintegration followed by freeze drying. The defibrillation processes did not modify the allomorph composition of BC, characterized by the preponderance of Ia compared to Ib form, but determined an increase of crystallinity, from 81% to 84 85% Morphological investigations revealed that the pellicles were entirely disintegrated by the mechanical treatments. AFM Peak Force Quantitative Nanomechanical Mapping revealed unexpected detachment of small fibers from the BC ribbons at regular intervals, which was proved so far only for cellulose nanofibers from plants. PLA composites obtained with these BCNF showed higher modulus with almost 30% compared to the matrix. Dried BCNF prepared by these eco friendly approaches are good reinforcements for bionanocomposites for "in vivo" or "ex vivo" application, due to their high purity.
Big picture is better: The social implications of construal level for advice taking

Advice taking is of growing interest to organizational scholars because it is a critical pathway for knowledge transfer and learning. Based on construal level theory, we hypothesize that high construal advisors are viewed as experts and, in turn, others are more likely to take their advice. In a field study of an online community of programmers and a laboratory experiment measuring psychological mechanisms, we find that signaling higher construal by communicating more abstractly is positively associated with expert reputation, which in turn explains others' advice taking behavior. Implications for research on the social consequences of construal level and novel antecedents of perceived expertise and advice taking are discussed.
Effects of Web based Cognitive Apprenticeship and Time Management on the Development of Computing Skills in Cloud Classroom: A Quasi Experimental Approach
Venue: Int. J. Inf. Commun. Technol. Educ.

Web based learning is generally a solitary process without teachers' on the spot assistance. In this study, a quasi experiment was conducted to explore the effects of various combinations of Web Based Cognitive Apprenticeship WBCA and Time Management TM on the development of students' computing skills. Three class cohorts of 124 freshmen in a one semester course titled 'Applied Information Technology: Data Processing' were chosen for the empirical study. They were divided into three groups: two experimental groups G1, n=42; G2, n=40 and one control group G3, n=42. The goal of this research is to examine the effects of WBCA, TM, and their combination on undergraduates' learning, and further develop appropriate course design and online teaching methods for both teachers and schools. The results show that students who received WBCA and TM had higher grades than those without. The authors further discuss the implications of the findings and results for online teachers and scholars.
Sustaining Runtime Performance while Incrementally Modernizing Transactional Monolithic Software towards Microservices
Venue: ICPE

Microservices are a promising target architecture for the modernization of monolithic software. However, breaking up a monolith into services can have a severe impact on performance, especially transactions. Therefore, careful planning of such modernizations with respect to performance is required. This is particularly true for incremental modernizations, which release partially modernized states of the application into production. In this paper, we present a simulation based approach for sustaining runtime performance during incremental modernizations towards Microservices.
Food for Thought: A Randomised Controlled Trial of Emotional Freedom Techniques and Cognitive Behavioural Therapy in the Treatment of Food Cravings.
Venue: Applied psychology. Health and well being

Addressing the internal determinants of dysfunctional eating behaviours (e.g. food cravings) in the prevention and treatment of obesity has been increasingly recognised. This study compared Emotional Freedom Techniques (EFT) to Cognitive Behavioural Therapy (CBT) for food cravings in adults who were overweight or obese (N 83) in an 8 week intervention. Outcome data were collected at baseline, post intervention, and at 6 and 12 months follow up. Overall, EFT and CBT demonstrated comparable efficacy in reducing food cravings, one's responsiveness to food in the environment (power of food) and dietary restraint, with Cohen's effect size values suggesting moderate to high practical significance for both interventions. Results also revealed that both EFT and CBT are capable of producing treatment effects that are clinically meaningful, with reductions in food cravings, the power of food, and dietary restraint normalising to the scores of a non clinical community sample. While reductions in BMI were not observed, the current study supports the suggestion that psychological interventions are beneficial for food cravings and both CBT and EFT could serve as vital adjunct tools in a multidisciplinary approach to managing obesity.
Quantum metrology with nonclassical states of atomic ensembles

Quantum technologies exploit entanglement to revolutionize computing, measurements, and communications. This has stimulated the research in different areas of physics to engineer and manipulate fragile many particle entangled states. Progress has been particularly rapid for atoms. Thanks to the large and tunable nonlinearities and the well developed techniques for trapping, controlling, and counting, many groundbreaking experiments have demonstrated the generation of entangled states of trapped ions, cold, and ultracold gases of neutral atoms. Moreover, atoms can strongly couple to external forces and fields, which makes them ideal for ultraprecise sensing and time keeping. All these factors call for generating nonclassical atomic states designed for phase estimation in atomic clocks and atom interferometers, exploiting many body entanglement to increase the sensitivity of precision measurements. The goal of this article is to review and illustrate the theory and the experiments with atomic ensembles that have demonstrated many particle entanglement and quantum enhanced metrology.
Non classical states of atomic ensembles: fundamentals and applications in quantum metrology

Quantum technologies exploit entanglement to revolutionize computing, measurement, and communication. This has stimulated the research in different areas of physics to engineer and manipulate fragile many particle entangled states. Progress has been particularly rapid for atoms. Thanks to the large and tunable nonlinearities and the well developed techniques for trapping, controlling and counting, many groundbreaking experiments have demonstrated the generation of entangled states of trapped ions, cold and ultracold gases of neutral atoms. Moreover, atoms can couple strongly to external forces and light fields, which makes them ideal for ultra precise sensing and time keeping. All these factors call for generating non classical atomic states designed for phase estimation in atomic clocks and atom interferometers, exploiting many body entanglement to increase the sensitivity of precision measurements. The goal of this article is to review and illustrate successful theoretical proposals and experiments with atomic ensembles that have demonstrated many particle entanglement and quantum enhanced metrology.
Preparation of Entangled States through Hilbert Space Engineering.
Venue: Physical review letters

We apply laser fields to trapped atomic ions to constrain the quantum dynamics from a simultaneously applied global microwave field to an initial product state and a target entangled state. This approach comes under what has become known in the literature as "quantum Zeno dynamics" and we use it to prepare entangled states of two and three ions. With two trapped {9}Be^ ions, we obtain Bell state fidelities up to 0.990_{ 5}+2} with three ions, a W state fidelity of 0.910_{ 7}+4} is obtained. Compared to other methods of producing entanglement in trapped ions, this procedure can be relatively insensitive to certain imperfections such as fluctuations in laser intensity.