bluuebunny/crossref_metadata_2025_split huggingface dataset:
A general framework for fatigue reliability analysis of a high temperature component
Authors: Du Weiqi , Luo Yuanxin , Wang Yongqin , Ma Ling 
Published: October 2018

AbstractFatigue reliability analysis for a high temperature component is a complex task due to the difficulties of doing experiments and uncertainties occurring in practical engineering. Researchers usually focus on the fatigue life scatter of standard specimens since the life data are easily available from fatigue tests. An alternative method is proposed in this paper which can replace the real tests of high temperature components with finite element (FE) simulation. A constitutive model coupled damage rule is utilized in this work to describe the cyclic stress‐strain response. Then, the FE simulations is incorporated into the general framework for reliability assessment. An adaptive least squares support vector machines with Latin hypercube sampling and learning function is employed to construct limit state function. To verify the accuracy and robustness of proposed method, a numerical example is utilized. In the end of this paper, a three‐layer structure extrusion container is applied for whole flowchart of fatigue reliability analysis.
Adaptive sliding‐mode control for spacecraft relative position tracking with maneuvering target
Authors: Zhang Kai , Duan Guangren , Ma Mingda 
Published: October 2018

SummaryThis paper considers the adaptive sliding‐mode control (ASMC) problem of spacecraft relative position tracking with maneuvering target in the presence of external disturbance and unknown mass property. Integrated with the spacecraft absolute orbit dynamics, the line‐of‐sight–based relative position motion model is established; further, the problem is formulated in the general mechanical second‐order form with unknown mass parameter and matching disturbance, which makes it convenient to use some useful physical properties in the control law design. As a stepping‐stone, the traditional ASMC law is proposed without prior knowledge of uncertainty/disturbance bound. Then, incorporated with the smooth‐projection algorithm and equivalent‐control‐dependent gain method, the modified control law is proposed, which can force the mass estimate to remain in a desired domain and efficiently overcome the drawback of the overestimation of the disturbance in the traditional ASMC law. Within the Lyapunov frame, the bounded stability is presented in the real case that the sign function is replaced by the hyperbolic tangent function. Finally, three different simulation cases are presented to show fine performance of the modified ASMC law.
When is it reasonable to implement the discontinuous sliding‐mode controllers instead of the continuous ones? Frequency domain criteria
Authors: Pérez‐Ventura Ulises , Fridman Leonid 
Published: October 2018

SummaryProfessor Utkin proposed an example showing that the amplitude of chattering caused by the presence of parasitic dynamics (stable actuators) in some systems governed by the First‐Order Sliding‐Mode Controller is lower than that produced by the Super‐Twisting Algorithm. This example served to motivate this paper reconsidering the problem of comparison of chattering in systems with stable actuators, and driven by Discontinuous Sliding‐Mode Controllers (DSMCs) and Continuous Sliding‐Mode Controllers (CSMCs). Comparison of chattering produced by DSMC and CSMC taking into account their amplitudes, frequencies, and average power (AP) needed to maintain the system into real‐sliding modes, allowing to conclude the following: (i) for systems with slow actuators, the amplitude of oscillations and AP produced by DSMC be smaller than those caused by CSMC; (ii) for bounded disturbances with fixed Lipschitz constant, there exist sufficiently fast actuators for which the amplitude of oscillations and AP produced by CSMC be smaller than those caused by DSMC.
Resource efficiency and green economic sustainability transition evaluation of green growth productivity gap and governance challenges in Cambodia
Authors: Luukkanen Jyrki , Kaivo‐oja Jari , Vähäkari Noora , O'Mahony Tadhg , Korkeakoski Mika , Panula‐Ontto Juha , Vehmas Jarmo , Nguyen Quoc Anh 
Published: October 2018

AbstractThis study provides an analysis of Cambodian socio‐economic and environmental development. The analysis applies the Sustainable Society Index—database and uses Sustainability Window analyses linked to the green growth strategy in Cambodia. The novel analyses provide criteria for weak and strong sustainability and are further developed to evaluate the green growth productivity gap.We have carried out empirical analyses using indicators of the different dimensions of sustainability—economic, social, and environmental. The Sustainability Window defines the minimum economic development for social sustainability and the maximum economic development for environmental criterion for sustainability.This study demonstrates methodological usefulness of the Sustainability Window analysis in the fields of development studies and green growth. The methodological novelty of this study is to use Sustainability Window approach and to provide a novel empirical testbed for strong and weak sustainability analyses as well as for the analysis of the green growth resource use productivity gap.
Capillary electrophoresis in phytochemical analysis (2014–2017)
Authors: Zhou Dong‐Dong , Zhang Qian , Li Shao‐Ping , Yang Feng‐Qing 
Published: October 2018

AbstractThis updated review is focused on the applications of CE in phytochemical analysis during the period of 2014 to April 2018 (about 130 papers were included). The article mainly consists of three main sections, including sample pretreatment (extraction and on‐line pre‐concentration), method development (separation and detection) and applications in quality evaluation of medicinal plants, screening of active compounds (enzyme inhibitors) and studying interaction between phytochemicals and bio‐macromolecules.
A doubly robust weighting estimator of the average treatment effect on the treated
Authors: Moodie Erica E. M. , Saarela Olli , Stephens David A. 
Published: October 2018

We introduce an importance sampling derivation of the average treatment effect on the treated and extend this to incorporate an augmentation term to allow doubly robust estimation of the average treatment effect on the treated. Unlike the matching estimator of the average treatment effect on the treated, the augmented inverse weighted estimator that results from the importance sampling approach has regular asymptotic properties and does not result in any datapoints being excluded from the estimation. Following simulations, we apply the doubly robust, augmented weighted estimator to a U.S. national survey of health to examine the impact of smoking on sleep, and we use techniques developed for other doubly robust estimators to demonstrate model validity.
Energy dissipation and performance assessment of double damped outriggers in tall buildings under strong earthquakes
Authors: Morales‐Beltran Mauricio , Turan Gürsoy , Dursun Onur , Nijsse Rob 
Published: October 2018

SummaryThe use of a single set of outriggers equipped with oil viscous dampers increases the damping ratio of tall buildings in about 6–10%, depending on the loading conditions. However, could this ratio be further increased by the addition of another set of outriggers? Should this additional set include dampers too? To answer these questions, several double damped outrigger configurations for tall buildings are investigated and compared with an optimally designed single damped outrigger, located at elevation 0.7 of the total building's height (h). Using free vibration, double outrigger configurations increasing damping up to a ratio equal to the single‐based optimal are identified. Next, selected configurations are subjected to several levels of eight ground motions to compare their capability for avoiding damage under critical excitations. Last, a simplified economic analysis highlights the advantages of each optimal configuration in terms of cost savings. The results show that, within the boundaries of this study, combining a damped outrigger at 0.5h with a conventional outrigger at 0.7h is more effective in reducing hysteretic energy ratios and economically viable if compared with a single damped outrigger solution. Moreover, double damped outrigger configurations for tall buildings exhibit broader display of optimal combinations, which offer flexibility of design to the high‐rise architecture.
Participant satisfaction with dementia prevention research: Results from Home‐Based Assessment trial
Authors: Sano Mary , Egelko Susan , Zhu Carolyn W. , Li Clara , Donohue Michael C. , Ferris Steven , Kaye Jeffrey , Mundt James C. , Sun Chung‐Kai , Aisen Paul S. , Feldman Howard H. 
Published: October 2018

AbstractIntroductionLittle is known about factors affecting motivation and satisfaction of participants in dementia prevention trials.MethodsA Research Satisfaction Survey was administered to 422 nondemented older adults who participated in the Home‐Based Assessment trial.ResultsOverall satisfaction was high, with means of all individual items near to above a value of 3 on a scale from 1 (worst) to 4 (best). Greater satisfaction was associated with staff‐administered interviews versus automated technologies. The most liked aspects of research participation were volunteerism, opportunity to challenge and improve mental function, and positive interactions with staff. The least liked aspect was repetitiveness of the assessments. Participants requested more contact with staff and other older adults and more feedback on performance.DiscussionOlder adults' participation in research was primarily motivated by altruism. Methodologies that facilitate human contact, encourage feedback and novelty of tasks should be incorporated into future trial design.
Mindfulness-Based Group Therapy for Men With Situational Erectile Dysfunction: A Mixed-Methods Feasibility Analysis and Pilot Study
Authors: Bossio Jennifer A. , Basson Rosemary , Driscoll Miriam , Correia Shauna , Brotto Lori A. 
Published: October 2018

Abstract

Introduction
Recent advances in sexual health research support the benefits of mindfulness-based therapy (non-judgmental present-moment awareness) for the treatment of women’s sexual dysfunction.

Aim
To determine whether it is feasible to implement an adapted, empirically supported treatment protocol for female sexual dysfunction to the specific needs of men with situational erectile dysfunction (ED).

Methods
A mixed-methods approach was taken for this feasibility pilot study. A total of 10 men (Mage = 40.3, SD = 14.01, Range = 20–67) with a diagnosis of situational ED were recruited to participate in a 4-week mindfulness-based treatment group. The group was adapted from protocols shown to be effective for women with sexual dysfunction and edited to include content specific to situational ED. Sessions were 2.25 hours in length, included daily home-practice activities, and integrated elements of psychoeducation, sex therapy, and mindfulness skills. Men completed questionnaires (International Index of Erectile Functioning, Relationship Assessment Scale, Five Facets of Mindfulness Questionnaire, a treatment expectation questionnaire) at 3 time points (prior to treatment, immediately after treatment, and 6 months after treatment). 5 men (Mage = 44.4, SD = 15.76, Range = 30–67) participated in qualitative exit interviews.

Main Outcome Measure
Findings support the feasibility of adapting a mindfulness-based group treatment for situational ED.

Results
With respect to feasibility, the dropout rate was 10%, with 1 participant who did not complete the treatment. Comparisons between Time 1 and Time 3 self-reports suggested that this treatment protocol holds promise as a novel means of impacting erectile functioning (Cohen’s d = 0.63), overall sexual satisfaction (Cohen’s d = 1.02), and non-judgmental observation of one’s experience (Cohen’s d = 0.52). Participants’ expectations for the treatment were generally positive and correlated to self-reported outcomes (r = .68–.73). Qualitative analyses revealed 6 themes: normalization, group magic, identification of effective treatment targets, increased self-efficacy, relationship factors, and treatment barriers.

Clinical Implications
In a shift toward a biopsychosocial framework for the treatment of men’s sexual dysfunction, clinicians may consider incorporating mindfulness to address psychosocial and psychosexual components of dysfunction.

Strength & Limitations
This is the first study—to our knowledge—to adapt mindfulness protocols for use with men’s sexual dysfunction. Because this is a pilot study aimed at feasibility, the sample size is small and no control group was included, thus conclusions about efficacy and generalizability cannot be made.

Conclusion
The current study suggests that a mindfulness group therapy framework offers a feasible and potentially promising treatment avenue for men with situational ED.
Service design for the design community: TCDC Resource Center's relocation experience
Authors: Thamtheerasathian Lerchart , Choemprayong Songphan , Teerathammongkol Pimpaporn , Srisatriyanon Siwalai 
Published: October 2018

AbstractDuring the move to a new location in 2016-2017, the headquarters of Thailand Creative & Design Center (TCDC) in Bangkok applied a service design approach to devise and deploy new and improved services. Applying a case study approach, this article reports the TCDC experience in adopting a service design approach in its library function at the TCDC Resource Center. The initiative aimed to create a new service blueprint as well as to implement new and updated services to meet ever-changing user needs. It is expected that service design will increase the user satisfaction level, which will lead to an increasing number of members and visitors, as well as promote revisits and brand loyalty. The process included developing empathy, service ideation, prototyping, and testing. As a result, several new and updated services were introduced and implemented both in the physical space and online. As an iterative process, the design team has also provided multiple channels to receive feedback from users both directly and indirectly to ensure continuous improvement of its services and products.
Private Security in Nairobi, Kenya: Securitized Landscapes, Crosscurrents, and New Forms of Sociality
Authors: Dobson Nathan 
Published: October 2018

Abstract:This article documents some of the forms of sociality engendered by the massive and growing presence of private security guards around Nairobi, Kenya. A focus on violence and the logic of an ideal of the use of violence in critical security studies literature obfuscates these networks in a similar way to idealizations of public space and the public sphere in anthropological literature on private security and residential enclaves. By looking at the close ties guards maintain with their homes in rural areas of Nairobi and the associations they make with people such as hawkers, it becomes clear that their presence in the city is creating new sets of valuations and obligations all the time. These forms of sociality are not galvanized by the threat of violence that the guards evoke; rather, they are engendered alongside and at cross-currents to the idealized, securitized landscape.
Integral backstepping control for trajectory and yaw motion tracking of quadrotors
Authors: Poultney Alexander , Gong Peiyan , Ashrafiuon Hashem 
Published: October 2018

SUMMARYThis work presents a novel trajectory tracking, hovering, and yaw motion control for quadrotors subject to unknown modeling uncertainties and disturbances. Nonlinear equations of motion are used to model the quadrotor's motion without any simplifying assumptions. An integral backstepping control is developed by defining the tracking errors, their integral, and their first through third time derivatives as the system states. The resulting surge force and roll and pitch moments are shown to asymptotically stabilize the error states subject to bounded disturbances and modeling uncertainties. Similarly, a yaw moment is derived through integral backstepping that simultaneously stabilizes yaw motion errors. The controller performance in simultaneous trajectory and yaw motion tracking is verified through both simulations and experiments.
Evaluating the impact of Idea-Inspire 4.0 on analogical transfer of concepts
Authors: Siddharth L. , Chakrabarti Amaresh 
Published: October 2018

AbstractThe biological domain has the potential to offer a rich source of analogies to solve engineering design problems. However, due to the complexity embedded in biological systems, adding to the lack of structured, detailed, and searchable knowledge bases, engineering designers find it hard to access the knowledge in the biological domain, which therefore poses challenges in understanding the biological concepts in order to apply these concepts to engineering design problems. In order to assist the engineering designers in problem-solving, we report, in this paper, a web-based tool called Idea-Inspire 4.0 that supports analogical design using two broad features. First, the tool provides access to a number of biological systems using a searchable knowledge base. Second, it explains each one of these biological systems using a multi-modal representation: that is, using function decomposition model, text, function model, image, video, and audio. In this paper, we report two experiments that test how well the multi-modal representation in Idea-Inspire 4.0 supports understanding and application of biological concepts in engineering design problems. In one experiment, we use Bloom's method to test “analysis” and “synthesis” levels of understanding of a biological system. In the next experiment, we provide an engineering design problem along with a biological-analogous system and examine the novelty and requirement-satisfaction (two major indicators of creativity) of resulting design solutions. In both the experiments, the biological system (analogue) was provided using Idea-Inspire 4.0 as well as using a conventional text-image representation so that the efficacy of Idea-Inspire 4.0 is tested using a benchmark.
Importation of psychrotolerant fungi to Antarctica associated with wooden cargo packaging
Authors: Hughes Kevin A. , Misiak Marta , Ulaganathan Yogabaanu , Newsham Kevin K. 
Published: October 2018

AbstractThe harsh climatic conditions and low levels of human activity in Antarctica, relative to other regions, means few non-native species have established. However, the risk of introductions is becoming greater as human activity increases. Non-native microorganisms can be imported to Antarctica in association with fresh food, cargo and personal clothing, but the likelihood of their establishment is not well understood. In January 2015, a wooden packing crate, heavily contaminated with fungi, was imported by aircraft from Punta Arenas, Chile, to Rothera Research Station, Antarctica.Mucor racemosusBull. and two strains ofTrichoderma viridescens(A.S. Horne & H.S. Will.) Jaklitsch & Samuels were isolated from the wood. Measurements of hyphal extension rates indicated that all three strains were psychrotolerant and capable of growth at 4°C, withM. racemosusgrowing at 0°C. The imported fungi could grow at rates equivalent to, or faster than, species isolated from Antarctic soils, suggesting that low temperature may not be a limiting factor for establishment. It is recommended that wood heat-treatment standards, equivalent to those described in the International Standards for Phytosanitary Measures No. 15, are employed by national operators importing cargo into Antarctica, and that treated wood is adequately stored to prevent fungal contamination prior to transportation.
Time-varying associations of racial discrimination and adjustment among Chinese-heritage adolescents in the United States and Canada
Authors: Juang Linda P. , Shen Yishan , Costigan Catherine L. , Hou Yang 
Published: October 2018

AbstractThe aim of our study was twofold: to examine (a) whether the link between racial discrimination and adjustment showed age-related changes across early to late adolescence for Chinese-heritage youth and (b) whether the age-related associations of the discrimination–adjustment link differed by gender, nativity, and geographical region. We pooled two independently collected longitudinal data sets in the United States and Canada (N= 498, ages 12–19 at Wave 1) and used time-varying effect modeling to show that discrimination is consistently associated with poorer adjustment across all ages. These associations were stronger at certain ages, but for males and females, first- and second-generation adolescents, and US and Canadian adolescents they differed. There were stronger relations between discrimination and adjustment in early adolescence for males compared to females, in middle adolescence for first-generation compared to second-generation adolescents, and in early adolescence for US adolescents compared to Canadian adolescents. In general, negative implications for adjustment associated with discrimination diminished across the span of adolescence for females, second-generation, and US and Canadian adolescents, but not for males or first-generation adolescents. The results show that the discrimination–adjustment link must be considered with regard to age, gender, nativity, and region, and that attention to discrimination in early adolescence may be especially important.
Antioxidant and developmental capacity of retinol on thein vitroculture of rabbit embryos
Authors: Elomda Ahmed M. , Saad Mohamed F. , Saeed Ayman M. , Elsayed Ashraf , Abass Ahmed O. , Safaa Hosam M. , Mehaisen Gamal M. K. 
Published: October 2018

SummaryOxidative stress is a major cause of defective embryo development duringin vitroculture. Retinoids are recognized as non-enzymatic antioxidants and may have an important role in the regulation of cell differentiation and vertebrate development. However, there are not enough reports discussing the antioxidant and developmental capacity of retinoids, including retinol (RT), on thein vitrodevelopment of embryos recovered from livestock animals, particularly in rabbit species. Therefore, morula embryos obtained from nulliparous Red Baladi rabbit does were cultured for 48 h in TCM199 medium in the absence of RT (control group) or in the presence of RT at concentrations of 10, 100 and 1000 nM. The developmental capacity to the hatched blastocyst stage, the antioxidant biomarker assay and the expression of several selected genes were analyzed in each RT group. The data show that RT significantly (P<0.001) promoted the embryo hatchability rate at the concentration of 1000 nM to 69.44% versus 29.71% for the control. The activity of malondialdehyde (MDA) level was significantly (P<0.05) lower in the RT groups than in the control group, while the total antioxidant capacity (TAC), superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities were significantly (P<0.05) higher following treatment with RT. Furthermore, RT treatment considerably upregulated the relative expression of gap junction protein alpha 1 (GJA1), POU class 5 homeobox 1 (POU5F1) and superoxide dismutase 1 (SOD1) genes compared with the control group. The current study highlights the potential effects of RT as antioxidant in the culture medium on thein vitrodevelopment of rabbit embryos.