bluuebunny/crossref_metadata_2025_split huggingface dataset:
Parameter identification of Jiles–Atherton model using the chaotic optimization method
Authors: Rubežić Vesna , Lazović Luka , Jovanović Ana 
Published: August 2018

Purpose
The purpose of this paper is to propose a chaotic optimization method for identifying the parameters of the Jiles–Atherton (J-A) hysteresis model.

Design/methodology/approach
The J-A model has five parameters which are assigned with physical meaning and whose determination is demanding. To determine these parameters, the fitness function, which represents the difference between the measured and the modeled hysteresis loop, is formed. Optimal parameter values are the values that minimize the fitness function.

Findings
The parameters of J-A model for three magnetic materials are determined. The model with the optimal parameters is validated using measured data and comparison with particle swarm optimization algorithm, genetic algorithm, pattern search and simulated annealing algorithm. The results show that the proposed method provides better agreement between measured and modeled hysteresis loop than other methods used for comparison. The proposed method is also suitable for simultaneous optimization of multiple hysteresis loops.

Originality/value
Chaotic optimization method is implemented for the first time for J-A model parameter identification. Numerical comparisons with results obtained with other optimization algorithms demonstrate that this method is a suitable alternative in parameters identification of J-A hysteresis model. Furthermore, this method is easy to implement and set up.
Calculation approach of reluctance in the magnetic circuit of transformer employed to convert into equivalent electric circuit
Authors: Wang Yingying , Yuan Jiansheng 
Published: August 2018

Purpose
The theoretical method of converting the magnetic circuit into an electric circuit is mature, but the way to determine the inductances in the electric circuit is not reliable, especially for the core working in saturation status, and it is impossible to determine the inductances by the transformer terminal measurements, as the measurement information is not enough to determine a number of inductances. This paper aims to propose an approach of calculating the reluctances.

Design/methodology/approach
In this paper, an approach of calculating the reluctances is proposed based on the numerical simulation of magnetic field in transformer with different values of current excitation. The reluctance of a core segment or air region as a branch of magnetic circuit is obtained by the magnetic energy and magnetic flux. By this way, all the reluctances as function of flux can be determined, and then the inductances can be determined. The reluctances and equivalent electric circuit of three-phase integrative transformer is determined, and its validation is proved in the paper.

Findings
The single phase example shows that the proposed method has a good performances on analysis of the inrush current in deep saturation. The peak value of the inrush current derived from the proposed approach matches well with the results obtained by coupled circuit-FEM analysis, and the difference is about 4.8 per cent. For studies on dual models of single phase transformers, the leakage inductances have important effects on the peak value of the inrush current. The reluctances of three-phase transformer are calculated, and the equivalent circuit simulation results are slightly smaller than the coupled circuit-FEM simulation results.

Originality/value
Approach of calculating the reluctances based on the numerical simulation of magnetic field in transformer is proposed. The magnetic core and air space are divided into several segments, and the reluctance for each segment is calculated based on the energy in the region and the flux of the cross-sectional area. By applying various excitation currents, all the reluctances as function of flux can be determined, and then all the non-linear inductances including the non-linear leakage inductances are obtained. The proposed approach is reliable to determine a number of inductances in the dual electric circuit, especially for deep saturation status.
Experimental study on prestressed concrete hollow slabs in service strengthened with prestressed CFRP plates
Authors: Wang Jiawei , Jia Yanmin , Zhang Guanhua , Han Jigang , Liu Jinliang 
Published: August 2018

Purpose
Most existing studies are confined to model beam tests, which cannot reflect the actual strengthening effects provided by prestressed carbon-fiber-reinforced polymer (CFRP) plates to existing bridges. Hence, the actual capacity for strengthening existing bridges with prestressed CFRP plates is becoming an important concern for researchers. The paper aims to discuss these issues.

Design/methodology/approach
Static load tests of in-service prestressed concrete hollow slabs before and after strengthening are conducted. Based on the results of the tests, the failure characteristics, failure mechanism and bending performance of the slabs are compared and analyzed. Nonlinear finite element method is also used to calculate the flexural strength of the strengthened beams prestressed with CFRP plates.

Findings
Test results show that prestressed CFRP plate strengthening technology changes the failure mode of hollow slabs, delays the development of deflection and cracks, raises cracking and ultimate load-carrying capacity and remarkably improves mechanical behavior of the slab. In addition, the nonlinear finite element analyses are in good agreement with the test results.

Originality/value
Strengthening with prestressed CFRP plates has greater advantages compared to traditional CFRP plate strengthening technology and improves active material utilization. The presented finite element method can be applied in the flexural response calculations of strengthened beams prestressed with CFRP plates. The research results provide technical basis for maintenance and reinforcement design of existing bridges.
Analytical and numerical study of the serviceability performance of partial composite steel-FRP beams
Authors: Sweedan Amr M.I. , Rojob Hothifa N. , El-Sawy Khaled M. 
Published: August 2018

Purpose
The purpose of this paper is to introduce a closed-form analytical solution to evaluate the nominal moment capacity and associated deflections of steel-FRP beam systems. The proposed solution takes into consideration the partial composite behavior resulting from the interfacial contact and slip between the subcomponents of the system.

Design/methodology/approach
The partial composite action theory was used to develop an elastic analytical solution for the deflection of simply supported composite steel-FRP beams subjected to a mid-span point load. The solution takes into consideration the partial composite behavior of the system that arises from the interlayer slip at the steel-FRP interface.

Findings
The developed analytical model is used to predict the nominal moment capacity of the composite beam and the load value at the onset of yielding in the steel subcomponent of the section. The distribution of shear forces induced in the steel fasteners due to the interfacial slip is also obtained analytically. A comparative study is conducted by comparing the analytical results to their counterparts resulting from finite element modeling of the composite steel-FRP system. The agreement between analytical results and finite element predictions validates the accuracy of the derived analytical solution for partial composite steel-FRP beams.

Research limitations/implications
The proposed solution applies only to the FRP strips and 6 mm steel bolts used in the study.

Originality/value
Recent studies revealed a promising efficiency of using mechanically fastened hybrid FRP sheets in strengthening steel beams. A major advantage of this technique is the ductile behavior of the steel-FRP system. The current paper introduces a closed-form analytical solution to evaluate the nominal moment capacity and associated deflections of steel-FRP beam systems. Forces developed at the steel-FRP interface due to the relative slip between both components are considered in the proposed analytical solution.
Bidding for UK city of culture
Authors: Cunningham Isaac , Platt Louise 
Published: August 2018

Purpose
The UK city of culture (UKCoC) scheme developed out of Liverpool’s year as European Capital of Culture in 2008 and is synonymous with urban renewal. The purpose of this paper is to examine the challenges of bidding for this scheme.

Design/methodology/approach
The authors conducted semi-structured telephone interviews with bid team members from four out of the five short-listed cities for the 2021 award. Respondents were situated across the country and, at the time, finalising their Stage 2 bids. Thematic analysis was conducted to analyse the responses.

Findings
The UKCoC scheme is a top-down scheme which is delivered “in place”. The danger of the top-down vision is that local people cannot often conceptualise what it might mean within the context of their own locality. The findings here suggest that bid team members are attempting to do this despite obvious time pressures. The research presented here suggests that cities are reconciling the top-down, criteria-led nature of the scheme with a real reflection on how to make that work for their locality which is distinctive.

Social implications
The UKCoC scheme has proved to galvanise communities to reflect on the nature of their places and think about what makes them unique in comparison to the other bidding cities. The bidding teams acknowledge the challenges of bidding but there is a sense that competing is worth the investment.

Originality/value
This paper offers a unique insight into a recent competitive placemaking scheme and reflects on how placemaking can potentially be reconciled as both top-down and place-based.
Social internet of vehicles: an epistemological and systematic perspective
Authors: Kehal Mounir , Zhang Zuopeng (Justin) 
Published: August 2018

Purpose
Building upon Internet of Things (IoT), Internet of Vehicles (IoV) and Social Internet of Things (SIoT), Social Internet of Vehicles (SIoV) is the latest development in the field. SIoV allows vehicles to socialize among themselves and share information of common interests. The increasing popularity of the SIoV concept demands more research to explore its great potential. However, very few studies have systemically investigated this concept to provide a comprehensive view for readers. The paper aims to discuss this issue.

Design/methodology/approach
This paper discusses the perspectives of the utilizations and limitations of SIoV, setting forward a systematic and epistemological framework.

Findings
The authors summarize the benefits of SIoV from four information-management perspectives: safety management, traffic control and convenience, productivity improvement and commercialization and exploring the factors inhibiting the development of SIoV from the following seven aspects: standardization, adaptability, scalability, infrastructure, lack of application, privacy and security.

Originality/value
The paper lays a solid foundation for researchers to find possible solutions to address the challenges to SIoV and provides valuable insights for practitioners who are interested in adopting SIoV initiatives.
Design, synthesis, and biological evaluation of 2‐(4‐(methylsulfonyl)phenyl)pyridine derivatives as GPR119 agonists
Authors: Zhou Ying , Zhu Xiaoyun , Zhang Leilei , Tang Chunlei , Feng Bainian 
Published: August 2018

AbstractThis study describes the design, synthesis, and biological evaluation of a series of novel small molecule GPR119 agonists with improved potency and moderate physiochemical characteristics. Among them, the most promising compounds 19 and 20 were obtained with EC50 values of 75 and 25 nM, respectively, in vitro cAMP assays and effectively decreased blood glucose excursion in oral glucose tolerance test (OGTT) of normal mice. Furthermore, in OGTT with type 2 diabetic mice induced by streptozotocin and high‐fat diet, compound 19 also showed significant reduction in blood glucose level compared to vehicle control group, which demonstrated an attractive in vitro and in vivo profile for further development.
The activity and action mechanism of novel short selective LL‐37‐derived anticancer peptides against clinical isolates of Escherichia coli
Authors: Aghazadeh Hossein , Memariani Hamed , Ranjbar Reza , Pooshang Bagheri Kamran 
Published: August 2018

AbstractHuman cathelicidin LL‐37 has recently attracted interest as a potential therapeutic agent, mostly because of its ability to kill a wide variety of pathogens and cancer cells. In this study, we aimed to investigate the antibacterial activity and cytotoxicity of previously designed LL‐37 anticancer derivatives (i.e., P7, P22, and P38). Calcein release assay and field emission‐scanning electron microscopy (FE‐SEM) were performed to elucidate the possible mechanism of action of P38, the peptide with the highest bactericidal activity. In silico analysis demonstrated the amphipathic alpha‐helical structure for three peptides. Antibacterial activity of P38 against multidrug‐resistant (MDR) clinical isolates of Escherichia coli was higher than that of P7 and P22. P38 caused no hemolysis or cytotoxicity. Treating calcein‐loaded E. coli with 4× MIC of P38 resulted in more than 96% leakage of calcein. Noticeably, FE‐SEM revealed that P38 killed E. coli by disrupting the bacterial membrane. Molecular docking studies showed that P38 had a much higher affinity for the outer membrane of Gram‐negative bacteria compared with both P22 and P7. Owing to the bactericidal activity of P38 against MDR E. coli isolates and its negligible cytotoxicity, P38 has the potential for further studies in a mouse model of infectious disease.
Local production of prolactin in lesions may play a pathogenic role in psoriatic patients and imiquimod‐induced psoriasis‐like mouse model
Authors: Yang Hui , Li Xia , Xue Feng , Xia Qunli , Zhao Xin , Wang Dixin , Chen Lihong , Cao Hua , Xu Han , Shen Xiaoyan , Yuan Weiru , Zhao Xiaoqing , Shi Ruofei , Zheng Jie 
Published: August 2018

AbstractHuman prolactin (PRL) is a well‐known hormone for pituitary of lactation and reproduction, but it also has immunostimulatory effect in some inflammatory or autoimmune diseases including psoriasis, which has not been well elucidated. This study aimed to determine the relationship between PRL and psoriasis through clinical case‐control studies, and explore the function of PRL in the pathogenesis of imiquimod (IMQ)‐induced psoriasis‐like mouse model. Serum from patients with psoriasis vulgaris (PsV), patients with erythrodermic psoriasis, and healthy controls (HCs) were collected for PRL test. Skin biopsies were collected for PRL, PRL receptors (PRLRs), cytokines mRNA level determination, PRL immunohistochemistry and PRL Western blotting. Mice were divided into four groups (each n = 6): control group (CON), IMQ group, anti‐PRL group and solvent group. Anti‐PRL group and solvent group mice were treated with PRL antagonist (cabergoline) and the solvent (0.25% methylcellulose) separately. The serum PRL level of PsV patients was significantly higher than that of HCs (P < 0.001). Compared with HCs, the mRNA levels of PRL and Th1/Th17 cytokines in skin lesions increased significantly (P < 0.05), and the PRL protein level was also significantly elevated in the epidermis and dermis of PsV patients. In IMQ‐induced psoriasis‐like mouse model, the mRNA and protein levels of PRL in skin lesions were significantly higher than CON group (P < 0.01). Comparing to solvent group, serum PRL level and PRL, cytokines mRNA levels in skin lesions all decreased significantly and the skin inflammatory condition was also alleviated obviously in anti‐PRL group. This study suggests that local production of PRL is the main resource of PRL in skin lesions and may play an important role in skin inflammatory of psoriasis.
Optimization thermophysical properties of TiO2 alloying Sm3TaO7 ceramics as promising thermal barrier coatings
Authors: Chen Lin , Wu Peng , Feng Jing 
Published: August 2018

AbstractTiO2 alloying effect is applied to optimize the thermophysical properties of fluorite‐type Sm3TaO7 ceramics synthesized via solid‐state reaction, and the influence of TiO2 alloying effect on the optical properties and elastic modulus is determined. According to the decreasing unit cell volume calculated by the X‐ray diffraction and the broadening Raman peak, Ti4+ substitutes the same number of Sm3+ and Ta5+ ions of Sm3TaO7 ceramics at the same time. As Ti4+ substitutes Sm3+ and Ta5+ ions, the band gap of TiO2‐Sm3TaO7 ceramics decreases from 4.71 to 4.11 eV. The phase transition of Sm3TaO7 ceramics is eliminated by TiO2 alloying effect and the coefficient of thermal expansion is increased. Via TiO2 alloying effect, two different phonon scattering mechanisms: (a) the misfit of atomic weight and ionic radius among Ti4+, Sm3+, and Ta5+ ions; (b) the rattling Ti4+ ions are introduced in Sm3TaO7 ceramics. The lowest thermal conductivity of TiO2‐Sm3TaO7 ceramics reaches 1.37 W K−1 m−1 (800°C, 9 mol% TiO2‐Sm3TaO7), which is much lower than 7YSZ and Sm2Zr2O7 ceramics. Accordingly, it is believed that TiO2‐Sm3TaO7 ceramics are promising thermal barrier coatings.
Help‐seeking experiences of older adults with a diagnosis of moderate depression
Authors: Polacsek Meg , Boardman Gayelene H. , McCann Terence V. 
Published: August 2018

AbstractDepression is the most prevalent mental illness among older adults. However, help‐seeking by older adults is frequently delayed, resulting in longer duration of untreated symptoms, poorer health outcomes, and consequent higher healthcare use. Early help‐seeking and access to appropriate support benefits individuals, while providing better outcomes from health systems constrained by limited resources. The aim of this study, which is abstracted from a larger study, was to identify the factors that inhibited and enabled formal help‐seeking in older adults with a diagnosis of moderate depression. Corbin and Strauss’ approach to grounded theory informed data collection and analysis. Two themes and related subthemes concerning help‐seeking barriers and facilitators were abstracted from the data. Help‐seeking barriers were attributable to stigma, self‐motivation, accessing formal support, ageism, and difficulty obtaining an initial diagnosis. Help‐seeking facilitators were accepting personal responsibility, mental health literacy, therapeutic alliances, and informal support. Findings have implications for the role of mental health nurses, who are well‐placed to provide support to community‐based older adults with depression. More broadly, mental health nurses and other clinicians should seek to reduce help‐seeking barriers and implement ways to facilitate help‐seeking in this cohort.
Strategies and practices for suppressing abnormal grain growth during liquid phase sintering
Authors: Fisher John G. , Kang Suk‐Joong L. 
Published: August 2018

AbstractAbnormal grain growth (AGG), where a small number of grains grow to sizes much larger than the neighboring matrix grains, is a frequent occurrence in liquid phase sintering of ceramics and cermets. As AGG can be detrimental to the material properties, a considerable amount of research on the nature, causes and suppression of AGG has been carried out. In this review, we outline the mixed control theory of grain growth and the principle of microstructural evolution that have been developed by Kang and coworkers over the last two decades. The theory and the principle, which are based on theories of crystal growth from a liquid, state that grain growth behavior is controlled by the nature of the solid‐liquid interfaces, either atomically rough (macroscopically rounded) or smooth (macroscopically faceted). For grains with atomically rough solid‐liquid interfaces, growth is controlled by diffusion of solute through the liquid phase and normal grain growth always occurs. For grains with faceted solid‐liquid interfaces (or a mixture of rough and faceted interfaces), growth is interface reaction‐controlled and diffusion‐controlled below and above a critical driving force for growth, respectively. Depending on the relative values of the critical driving force for growth Δgc and the maximum driving force for the largest grain in the system Δgmax, pseudo‐normal, abnormal, and stagnant grain growth can take place. Based on this theory and principle, we present strategies for suppressing AGG by adjusting Δgc and Δgmax to avoid AGG and examples of the successful use of these strategies.
Synthesis, structure, and luminescence of Eu3+‐activated La4Ti3O12nanoparticles with layered perovskite structure
Authors: Zhang Suyin , Zhang Pengyue , Liu Xin , Yang Zhexi , Huang Yanlin , Seo Hyo Jin 
Published: August 2018

AbstractLa4‐4xEu4xTi3O12(x= 0.01‐0.15) nanoparticles were synthesized via the polymerizable complex method. The X‐ray powder diffraction (XRD) measurements and Rietveld refinements verified that all the samples crystallized in a pure trigonal perovskite structure. La4Ti3O12has band energy of 3.88eV, which can be greatly narrowed by Eu3+‐doping. This benefits the red‐shift of the optical absorption fromUV‐ to near‐UVwavelength region. La4Ti3O12has the self‐activated luminescence at room temperature with a broadband centered at 520 nm. La4‐4xEu4xTi3O12(x= 0.01‐0.15) phosphors present red‐emitting luminescence with the strongest5D0→7F2transition at 613 nm. The energy transfer was discussed on the doping concentration. Importantly, the phosphors present dominant absorption in near‐UVregion (395 nm). An experimental red‐emitting lamp was fabricated using a 395 nmLED‐chip in combination with the single phosphor of La4‐4xEu4xTi3O12(x= 0.1). The results indicate that La4‐4xEu4xTi3O12could be a promising candidate used in solid‐state lighting and display under nearUV‐light.
Bidirectional Relations Between Parenting and Behavior Problems From Age 8 to 13 in Nine Countries
Authors: Lansford Jennifer E. , Rothenberg W. Andrew , Jensen Todd M. , Lippold Melissa A. , Bacchini Dario , Bornstein Marc H. , Chang Lei , Deater‐Deckard Kirby , Di Giunta Laura , Dodge Kenneth A. , Malone Patrick S. , Oburu Paul , Pastorelli Concetta , Skinner Ann T. , Sorbring Emma , Steinberg Laurence , Tapanya Sombat , Uribe Tirado Liliana Maria , Alampay Liane Peña , Al‐Hassan Suha M. 
Published: August 2018

This study used data from 12 cultural groups in nine countries (China, Colombia, Italy, Jordan, Kenya, Philippines, Sweden, Thailand, and the United States; N = 1,298) to understand the cross‐cultural generalizability of how parental warmth and control are bidirectionally related to externalizing and internalizing behaviors from childhood to early adolescence. Mothers, fathers, and children completed measures when children were ages 8–13. Multiple‐group autoregressive, cross‐lagged structural equation models revealed that child effects rather than parent effects may better characterize how warmth and control are related to child externalizing and internalizing behaviors over time, and that parent effects may be more characteristic of relations between parental warmth and control and child externalizing and internalizing behavior during childhood than early adolescence.