bluuebunny/crossref_metadata_2025_split huggingface dataset:
Communicating with underserved audiences
Authors: Goodman J. Robyn , Theis Ryan , Shenkman Elizabeth 
Published: May 2017

PurposeThe purpose of this research is to understand how low-income, ethnically diverse, Medicaid recipients read, interpret and use culturally tailored health communications, specifically health plan report cards and health intervention/wellness program recruitment materials.Design/methodology/approachThe paper reports two exploratory studies on message design. Researchers considered 12 focus groups for Study 1, consisting of 51 African-American, Hispanic and non-Hispanic White men and women who were enrolled in Medicaid and had a behavioral health diagnosis and a chronic disease. Researchers considered 22 focus groups for Study 2, consisting of 102 Hispanic, African-American and non-Hispanic White women enrolled in Medicaid.FindingsThe paper provides qualitative insights into how underserved populations interpret the visual and verbal aspects of health communications. Key findings include problems with cultural tailoring and monetary incentives for health improvement program participation, message components that show respect and are more likely to be read, how visuals can expand verbal messages and provide symbolic models and specifics on the desired image content.Research limitations/implicationsBecause of the qualitative approach, the research results may lack generalizability. Thus, researchers suggest conducting quantitative studies to test these findings.Practical implicationsThe paper includes implications for the development of powerful verbal and visual messaging for underserved populations. Additionally, the findings suggest a need to include emotional response in health communication theories and to incorporate visual communication theories in message design studies.Originality/valueResearch on health communication with underserved populations is limited, yet these populations have higher incidences of death and disability from disease. This paper fulfills a need to discover best health communication practices with underserved populations.
A panel vector AutoRegression analysis of income inequality dynamics in each of the 50 states of USA
Authors: Onafowora Olugbenga , Owoye Oluwole 
Published: May 2017

Purpose
The purpose of this paper is to investigate the income inequality dynamics in each of the 50 states of USA over the period 1981-2011.

Design/methodology/approach
The paper estimates an augmented Kuznets curve panel Vector AutoRegression in per capita income, economic freedom, educational attainment, unemployment, and population ageing along with evaluating generalized impulse responses functions (GIRF) and generalized forecast-error variance decompositions (GFEVD).

Findings
All the variables are integrated of order one and are panel cointegrated. Kuznets’ hypothesized inverted U-shaped relationship between inequality and growth is not supported by the data. Unemployment and population ageing have statistically significant positive effects on inequality in the long-run; education has statistically significant negative impact; economic freedom has statistically insignificant positive effect. Long-run bidirectional causality exists among the variables. GFEVD show that excluding income inequality itself, variation in income inequality is more influenced by perturbations in per capita income, educational attainment, and unemployment. GIRF corroborate the results of the GFEVD.

Originality/value
This paper fulfills an identified need to study the causal relationship between inequality and its determining factors without assuming the a priori exogeneity or endogeneity of the underlying variables.
Psycho-economic aspiration and subjective well-being
Authors: Aydin Necati 
Published: May 2017

Purpose
Previous research using the Aspiration Index (AI) suggests that intrinsic goals are positively, but extrinsic/materialistic goals are negatively associated with subjective well-being (SWB). The purpose of this paper is to extend the scope of previous research by exploring the pursuit of different goals in conjunction with SWB in a country with a culture mixing western and traditional values. Several hypotheses regarding the effects of extrinsic, intrinsic, hedonic, and self-transcendent values on SWB were tested.

Design/methodology/approach
An extended AI survey was conducted among randomly selected cross-sectional sample of 878 Turkish adults in Istanbul. The survey data were analyzed to explore the relationship between 14 aspiration domains and SWB using both correlation coefficients and several different regression models.

Findings
The study confirms the basic assumptions of the AI research in a Muslim society with a hybrid culture of materialistic and spiritual aspirations. The study found weak supporting evidence for the contribution of two newly added domains (i.e. aesthetic appreciation as well as honesty and fairness) to SWB, whereas the evidence for the positive contribution of intellectual life was overwhelming. Paradoxically, although the evidence from both correlation and regression coefficients supported a positive relationship between household income and SWB, after dividing the sample into two groups based on their income level, the low-income earners turned out to have relatively higher life satisfaction, holding everything else constant. More importantly, the study reveals that the impact of materialistic aspirations on SWB is still negative even if they are pursued in a hybrid culture.

Research limitations/implications
The study included three new domains in the conventional AI model. Although the findings confirmed the importance of two domains, it is important that they be replicated in other studies, particularly in different cultural settings.

Originality/value
This study makes a significant contribution in terms of testing the effect of materialist and spiritual values on SWB in a Muslim country.
Failure progression resistance of a generic steel moment-resisting frame under beam-removal scenarios
Authors: Hashemi Rezvani Farshad , Behnam Behrouz , Reza Ronagh Hamid , Alam M. Shahria 
Published: May 2017

Purpose
The purpose of this paper is to determine the failure progression resistance of the steel moment-resisting frames subjected to various beam-removal scenarios after application of the design earthquake pertinent to the structure by investigating a generic eight-story building.

Design/methodology/approach
The structure is first pushed to arrive at a target roof displacement corresponding to life safety level of performance. To simulate the post-earthquake beam-removal scenario, one of the beam elements is suddenly removed from the structure at a number of different positions. The structural response is then evaluated by using nonlinear static and dynamic analyses.

Findings
The results show that while no failure is observed in all of the scenarios, the vulnerability of the upper stories is much greater than that of the lower stories. In the next step, the structural resistance to such scenarios is determined. The results confirm that for the case study structure, at most, the resistance to failure progression in upper stories is 58 percent more than that of lower stories.

Originality/value
Failure and fracture of beam-to-column connections resulting in removal of beam elements may lead to a chain of subsequent failures in other structural members and eventually lead to progressive collapse in some cases. Deficiency in design or construction process of structures when combined by application of seismic loads may lead to such an event.
Use of wavelets for damage diagnostics in truss structures
Authors: Altammar Hussain , Kaul Sudhir , Dhingra Anoop K. 
Published: May 2017

Purpose
Wavelets are being increasingly used for damage diagnostics. The purpose of this paper is to present an algorithm that uses the wavelet transform for detecting mixed-mode, also known as combined mode, cracks in large truss structures.

Design/methodology/approach
The mixed-mode crack is modeled by superposing two damage modes, and this model is combined with a finite element model of the truss. The natural modes of the truss are processed through the wavelet transform and then used to determine the damage location. The influence of multiple parameters such as truss geometry, crack geometry, number of truss members, orientation of truss members, etc. is investigated as part of the study.

Findings
The proposed damage detection algorithm is found to be successful in detecting single mode as well as mixed-mode cracks even in the presence of significant end effects, and even when a relatively coarse sampling of natural modes is used. Results from multiple simulations that involve three commonly used truss structures are presented. A correlation between damage severity and the magnitude of wavelet coefficients is observed.

Originality/value
The proposed algorithm is found to be successful in accurately detecting damage, but direct determination of damage severity is found to be challenging.
Prognostic analysis of fastener joints in straight attachment lugs
Authors: Chikmath L. , Dattaguru B. 
Published: May 2017

PurposeMany failures of aircraft structural components in the past were attributed to cracks emanating from joints, which are identified as the most critical locations. In cases using the recently emerging structural health monitoring (SHM) systems, continuous monitoring needs be carried out at many major joint locations. The purpose of this paper is to develop computational techniques for fastener joints, including the possible change in contact conditions and change in boundary values at the pin-hole interface. These techniques are used for the prognostic analysis of pin-loaded lug joints with rigid/elastic pin subjected to fatigue loading by estimating the residual life of the component at any given instance to assist the SHM systems.Design/methodology/approachStraight attachment lug joints with rigid/elastic push-fit pin and smooth pin-hole interface are modelled in commercial software MSC PATRAN. In each case, the joint is subjected to various types of fatigue load cycles, and for each type of cycles, the critical locations and the stress concentrations are identified from the stress analysis. Later, for each type of fatigue cycle, the number of cycles required for crack initiation is estimated. A small crack is located at these points, and the number of cycles required to reach the critical length when unstable crack growth occurs is also computed. The novelty in the analysis of life estimations is that it takes into account possible changes in contact conditions at the pin-hole interface during load reversals in fatigue loading.FindingsThe current work on fastener joints brings out the way the load reversals leading to change in contact conditions (consequently changing boundary conditions) are handled during fatigue loading on a push-fit joint. The novel findings are the effect of the size of the hole/lug width, elasticity of the material and the type of load cycles on the fatigue crack initiation and crack growth life. Given other parameters constant, bigger size hole and stiffer pin lead to lesser life. Under load controlled fatigue cycles, pull load contributes to significant part of fatigue life.Originality/valueThe analysis considers the changing contact conditions at the pin-hole interface during fatigue cycles with positive and negative stress ratios. The results presented in this paper are of value to the life prediction of structural joints for various load cycles (for both pull-pull cases, in which the load ratios are positive, and pull-push cycles, where the load ratios are negative). The prognostic data can be used to effectively monitor the critical locations with joints for SHM applications.
Social trust: impacts on social influential diffusion
Authors: Yap Hock Yeow , Lim Tong-Ming 
Published: May 2017

PurposeThis paper aims to present social trust as a variable of influence by demonstrating the possibilities of trusted social nodes to improve influential capability and rate of successfully influenced social nodes within a social networking environment.Design/methodology/approachThis research will be conducted using simulated experiments. The base algorithm in research uses genetics algorithm diffusion model (GADM) where it carries out social influence calculations within a social networking environment. The GADM algorithm will be enhanced by integrating trust values into its influential calculations. The experiment simulates a virtual social network based on a social networking site architecture from the data set used to conduct experiments on the enhanced GADM and observe their influence capabilities.FindingsThe presence of social trust can effectively increase the rate of successfully influenced social nodes by factorizing trust value of one source node and acceptance rate of another recipient node into its probabilistic equation, hence increasing the final acceptance probability.Research limitations/implicationsThis research focused exclusively on conceptual mathematical models and technical aspects so far; comprehensive user study, extensive performance and scalability testing is left for future work.Originality/valueTwo key contributions of this paper are the calculation of social trust via content integrity and the application of social trust in social influential diffusion algorithms. Two models will be designed, implemented and evaluated on the application of social trust via trusted social nodes and domain-specified (of specific interest groups) trusted social nodes.
A fill-in-blank problem workbook for Java programming learning assistant system
Authors: Na Ta , Funabiki Nobuo , Zaw Khin Khin , Ishihara Nobuya , Matsumoto Shinpei , Kao Wen-Chung 
Published: May 2017

Purpose
To advance Java programming educations, the authors have developed a Java Programming Learning Assistant System (JPLAS) as a web application system. JPLAS provides fill-in-blank problems for novices to study the grammar and basic programming skills through code reading.

Design/methodology/approach
To select the blank elements with grammatically correct and unique answers from a given Java code, the authors have proposed the graph-based blank element selection algorithm. Then, the code for this problem should be highly readable to encourage novice students to study it. Because code readability can be improved by proper names for identifiers, the authors have also proposed the naming rule testing algorithm to identify codes with correct names.

Findings
In this paper, the authors present a fill-in-blank problem workbook by collecting suitable Java codes from textbooks and Web sites and applying these algorithms with several extensions. The workbook consists of 16 categories with a considerable number of problems that follow the conventional learning order of Java programming.

Originality/value
The proper set of ready-made fill-in-blank problems is effective in enhancing the usability of JPLAS both for teachers and students. For the preliminary evaluation, the authors assign a few problems to students. In coming semesters, the authors will use this workbook in the course to verify the adequacy of the proposal for novices.
The effect of serpentine additive on energy-saving and auto-reconditioning surface layer formation
Authors: Wang Xiao , Wu Junwei , Wei Xicheng , Liu Rende , Cao Qi 
Published: May 2017

Purpose
This paper aims to investigate the energy-saving effect and mechanism of serpentine as lubricant additive in the simulated condition.

Design/methodology/approach
An ABLT-1 bearing test machine was used for 1,350 hours and an MM-W1 three-pin-on-disk apparatus was used to investigate its anti-friction effect. The worn surface was characterized by scanning electron microscopy equipped with energy dispersive spectroscopy.

Findings
The results show that the energy-saving effect was improved after adding serpentine powder in oil and that both the friction coefficient and mass loss were dramatically decreased. The analysis on worn surface layer demonstrates that an auto-reconditioning surface layer was formed on the worn surface, which was responsible for the decrease in friction and wear.

Originality/value
The simulation test for the metal bearing was conducted over 1,350 hours using lubricant with and without serpentine powder. The addition of serpentine powder enhanced the energy-saving rate over time, stabilizing at about 13 per cent after 1,000 hours. An auto-reconditioning surface layer was formed on the surfaces of disassembled bearing lubricated with serpentine doped oil, resulting in dramatic decrease of both the friction coefficient and the mass loss. In addition to normal load and the accumulation of serpentine powder in the furrows and scratches of the deformed layer, the formation of the surface layer was possibly related to the substrate deformation induced by friction force.
Superlow friction of high mileage used oil with CuDTC in presence of MoDTC
Authors: Zeng Qunfeng 
Published: May 2017

Purpose
The purpose of this paper is to improve the antifriction and antiabrasive behavior of the used oil through the addition of a lubricant.

Design/methodology/approach
The author selected 85W-90 used oil with three kinds of 4,758, 10,507 and 16,223 km mileages, which may represent run-in wear period, steady-state wear period and rapid wear for used oil, respectively. Nano copper, molybdenum dithiocarbamate (MoDTC) and copper dioctyl dithiocarbamate (CuDTC) of lubricant additive are added to the used oil to improve its antifriction performances and service life. The influence of lubricant additive on the tribological properties of used oil is investigated by the friction tests.

Findings
An abnormal phenomenon has been observed by the friction test under high mileage used oil with CuDTC in presence of MoDTC lubrication, and superlow friction coefficient of 0.04 has been achieved after a running-in period for the first time. It is found that CuDTC additive is beneficial to improve greatly the antifriction behavior of used oil, especially when MoDTC is present. The results indicate that the dissoluble of CuDTC and the tribochemical reaction of MoDTC play an important role in superlow friction of high mileage used oil. Moreover, the superlow friction is also closely related to the viscosity of used oil.

Originality/value
The possible mechanism of superlow friction is attributed to the additive thinning effect and the synergistic effect of the dissoluble of CuDTC and the tribochemical reaction of MoDTC binary lubricant additives in high mileage used oil. This work will extend the application of CuDTC additive widely and explore a new method to the reutilization and the life extension of used lubricating oil.
Optimization of friction properties of kenaf polymer composite as an alternative friction material
Authors: Mustafa Ashafie , Abdollah Mohd Fadzli Bin , Amiruddin Hilmi , Shuhimi Fairuz Fazillah , Muhammad Noryani 
Published: May 2017

Purpose
The aim of this study is to determine the optimal parameters for friction coefficient of kenaf/epoxy (KE) composite as an alternative friction material.

Design/methodology/approach
The design of experiment was constructed using the Taguchi method. KE specimens were formed into 10 mm diameter pins using hot compression technique with different types, weight concentrations and treatments of kenaf. The samples were tested using a pin-on-disc tribometer at different applied loads, speeds and operating temperatures with a constant sliding distance of 3 km under dry sliding conditions.

Findings
The sample with 45 wt.% of non-treated kenaf fibre, tested at 19.62 N, 500 rpm and 100°C was found to be the optimized combination to obtain higher friction. From the confirmation test, the experimental friction coefficient is acceptable because of fall within 95 per cent confidence interval. Predominant wear mechanisms are identified as micro-crack and debonding of fibre.

Originality/value
KE composite can be considered as an alternative friction material, as the tested friction coefficient is within the suggested range for the friction material applications.
Preparation and tribological properties of PI oil-bearing material with controllable pore size
Authors: Jia Zhining , Yan Yanhong , Wang Weizheng 
Published: May 2017

Purpose
The content of pore-foaming agent directly affects pore characteristics and oil-absorption properties of polyimide (PI) porous materials, which further influence the tribological performance of PI pore material. This research paper aims to discuss these issues.

Design/methodology/approach
Thermal vacuum molding technology was adopted to prepare PI porous material with different structures by changing the content of the pore-forming agent to control pore size and porosity of the PI material. PI oil-bearing materials were obtained by vacuum oil immersion. The tribological experiments of PI oil-bearing materials were conducted on the CETR friction and wear testing machine.

Findings
The study results showed that PI porous material with a specific structure can be obtained by controlling the content of a pore-forming agent. In a certain range, with the increase in the content of the pore-forming agent, the average pore size and porosity increased, also the oil content increased, which means that the friction coefficient and wear rate decreased to a very large extent, and antifriction and wear resistant properties of the PI porous materials greatly improved. When the content of the pore-forming agent exceeds 8 per cent, the wear rate and friction coefficient of the PI porous materials began to increase.

Originality/value
Because the complexity of the tribological system consists of lubricating oil, porous material and friction pair, the physical understanding of the mechanism of this process remains limited. Therefore, the present research was undertaken to identify the phenomena involved, which will provide practical guidance for the tribological application in the field of bearing parts.
Comparative analysis of tribological behavior of plasma- and high-velocity oxygen fuel-sprayed WC-10Co-4Cr coatings
Authors: Cui Shiyu , Miao Qiang , Liang Wenping , Xu Yi , Li Baiqiang 
Published: May 2017

Purpose
The purpose of this study is to prepare WC-10Co-4Cr coatings using two processes of plasma spraying and high-velocity oxygen fuel (HVOF) spraying. The decarburization behaviors of the different processes are analyzed individually. The microstructural characteristics of the as-sprayed coatings are presented and the wear mechanisms of the different WC–10Co–4Cr coatings are discussed in detail.

Design/methodology/approach
The WC–10Co–4Cr coatings were formed on the surface of Q235 steel by plasma and HVOF spraying.

Findings
Plasma spraying causes more decarburizing decomposition of the WC phase than HVOF spraying. In the plasma spraying process, η(Cr25Co25W8C2) phase appears and the C content decreases from the top surface of the coating to the substrate.

Practical implications
In this study, two WC–10Co–4Cr coatings on Q235 steel prepared by plasma and HVOF spraying were compared with respect to the sliding wear behavior.

Originality/value
The wear mechanisms of the plasma- and HVOF-sprayed coatings were abrasive and oxidation, respectively.