bluuebunny/crossref_metadata_2025_split huggingface dataset:
Food insecurity, diet quality, and mental health in culturally diverse adolescents
Authors: Lachance Laura , Sean Martin Michael , Kaduri Pamela , Godoy-Paiz Paula , Ginieniewicz Jorge , Tarasuk Valerie , McKenzie Kwame 
Published: May 2014

Purpose– The purpose of this paper is to increase the understanding of adolescents’ perceptions of food insecurity and diet quality, and the impact that these factors have on mental health.Design/methodology/approach– This study used a community-based research approach. It gathered qualitative data from 11 in-depth interviews conducted with adolescents aged 13-19. Participants were recruited through various programmes they attended at a community organization in Toronto.Findings– Overall, results indicate that respondents clearly identified a linkage between food insecurity and mental health. They also identified several effects of poor diet quality on mental health. Respondents understood food insecurity and poor diet quality to exist on a continuum. However, they also identified other reasons for making poor dietary choices such as peer pressure. Mental health effects of food insecurity and poor diet quality included sadness, stress, worry, anger, shame, impaired concentration, and fatigue.Practical implications– This research will help to inform future research design in the field of social determinants of mental health. As well, the findings will help guide the development of interventions targeted towards this vulnerable age group.Originality/value– This is the first qualitative study to explore food insecurity and poor diet quality, as existing on a continuum, from the perspective of adolescents. The authors are also the first to explore the impact of these factors on the mental health of adolescents, based on their own understanding. What is more, the authors focused on a culturally diverse population living in an underprivileged neighbourhood in Toronto. The authors chose this population because they are at higher risk of both food insecurity and poor diet quality.
Organizing product recovery in industrial networks
Authors: Insanic Igor , Gadde Lars-Erik 
Published: May 2014

Purpose
– Increasing attention to sustainability has made product recovery issues increasingly significant. Although several studies portray product recovery arrangements as networks, these constellations have not been analyzed with network models. The purpose of this paper is to investigate the organizing of product recovery networks.

Design/methodology/approach
– Previous research highlighted the need for a holistic perspective on product recovery. Industrial network theory provides such a framework, based on three dimensions of business reality: activities, resources and actors. The research method applied is a qualitative case study approach of product recovery in the PC industry.

Findings
– The most significant issues in the organizing of product recovery concern the coordination of interdependent activities and the combining of physical and organizational resources. Effective organizing is contingent on interaction and information exchange among firms. Furthermore, the sorting rules applied in the product recovery process are crucial for the performance in the activity chain from disposer to end-user.

Research limitations/implications
– The study deals with product recovery of PCs, and needs to be supplemented with research in other empirical contexts.

Practical implications
– The study offers companies broader perspective on their product recovery operations by illustrating how they are related to a wider network.

Originality/value
– The study applies a novel perspective on product recovery. The analytical framework and the qualitative approach complement mainstream approaches.
Playing and (not?) understanding the game: ECRs and university support
Authors: Orlando Joanne , Gard Michael 
Published: May 2014

Purpose– The aging research community and current research accountability frameworks raise concerns about developing future researchers who have the capacity and commitment to undertake and lead quality research in the future. The aim of this paper is to focus on the support that Australian universities currently provide to build the capacity of their ECR staff and how ECRs are experiencing this support.Design/methodology/approach– Email interviews were used with early career education researchers (ECRs) to ask them how they experienced the research support structures provided by their institutions.Findings– It was found that the anxiety and frustration some ECRs feel about their research careers may stem from the appropriateness or otherwise of the kinds of immediate goals they are choosing for themselves and, perhaps more important, the extent to which they see themselves working in isolation from their colleagues.Practical implications– While different kinds of material support, such as reduced teaching loads and access to internal grant funds will always be important, it is argued that more attention needs to be given to realistic goal-setting for ECRs and a more patient, long-term approach to producing high-quality research.Originality/value– Developing a sustainable research community means building a supportive environment in which ECRs can achieve satisfaction and success. The research presented in this paper seeks to contribute to this goal by trying to learn more about the support ECRs currently experience in Australian universities.
Friction and wear behavior of Cu–Cr–Zr alloy lubricated with acid rain
Authors: Jia Zhengfeng , Su Yuchang , Xia Yanqiu , Shao Xin , Song Yanxin , Ni Junjie 
Published: May 2014

Purpose
– The purpose of this paper is to investigate the tribological properties of a Cu–Cr–Zr alloy lubricated with acid rain.

Design/methodology/approach
– The Cu 2.5 weight per cent–Cr-0.08 weight per cent–Zr alloy was produced in a vacuum induction furnace. The H2SO4 + H2O, HNO3 + H2O and H2SO4 + HNO3 + H2O mixtures with pH of 5 were used as acid rain. Pure water was used as rain. The friction and wear properties of Cu–Cr–Zr alloy/American Iron and Steel Institute (AISI) 52100 steel couples lubricated with acid rain were investigated using a reciprocating ball-on-disc friction and wear tester (Optimol SRV, Germany). For investigating the properties of the alloy and wear scars, scanning electron microscopy, X-ray diffraction microscopy, energy dispersive X-ray spectrum, transmission electron microscopy and X-ray photoelectron spectroscope were used.

Findings
– The wear rate of the Cu–Cr–Zr alloy lubricated with H2O containing HNO3 (pH = 5) was larger than pure water under the same conditions. The tribofilms containing Cu, Cr, Zr, S and N formed during sliding with acid rain, but corrosion also took place at that time.

Originality/value
– The wear rate of the Cu–Cr–Zr alloy lubricated with H2O containing HNO3 (pH = 5) was larger than pure water, the wear and corrosion took place during sliding. As the trolley wires, the life of the Cu–Cr–Zr alloy was influenced by the environment.
Effect of silver-organic precursor on friction and wear
Authors: Hu Ningning , Han Jiguang , Hu Bo 
Published: May 2014

Purpose
– The purpose of this paper is to study the effect of silver (Ag) precursor on friction and wear.

Design/methodology/approach
– Thermogravimetric analysis of the oil with Ag precursor and X-ray diffraction of the decomposition product of the Ag complex were performed. The tribological behavior was evaluated on a UMT-3M Tribometer (CETR) using pure military-grade oil lubricant and the prepared lubricant at room temperature and at 300°C. Energy-dispersive spectroscopy of the chemical composition on the wear scar was performed.

Findings
– When there is 1 weight per cent Ag precursor in the lubricant, the coefficient friction reduces by about 8 per cent at room temperature and by about 14 per cent at 300°C, and the wear probability also decreases, from moderate wear to mild wear at 300°C. There were more productions which could form metal Ag boundary films possessing low shearing stress and excellent lubricity at 300°C.

Originality/value
– Ag precursors used as additives in a military-grade oil lubricant and excellent lubricity found at high temperature.
Static analysis of hydrostatic conical bearings using flow resistance network method
Authors: Hsiao Shun-Te , Kang Yuan , Jong Shyh-Ming , Lee Hsing-Han , Peng De-Xing , Chang Yeon-Pun 
Published: May 2014

Purpose
– This paper aims to study the static characteristics of the hydrostatic conical journal bearings by utilizing single-action membrane restrictors to compensate the working pressures of recesses.

Design/methodology/approach
– The flow resistance network method is used to analyze the influences of load capacity and static stiffness of bearing with the design parameters, including the number of recesses, radial eccentricity ratio, axial displacement ratio, restriction constant, membrane compliance, length-diameter ratio, circumferential land width ratio, axial land width ratio and half of cone angle.

Findings
– This study shows the infinite stiffness of the oil produced in the first and second recesses while single-action membrane restriction constant of 2 and 3, respectively, as well as in the fourth recess while single-action membrane restriction constant of 0.01 and 0.1, respectively.

Research limitations/implications
– This article provides the hydrostatic conical bearings in static and unbiased states for analyses of design parameters. The analyses ignore dynamic pressure effect and do not use the Reynolds equation, and assuming that each oil recesses pressure is constant.

Practical implications
– The influences of the design parameters including the number of recesses, membrane restriction, membrane compliance, length-diameter ratio, half of con-angle, circumferential land width ratio, and axial land width ratio are discussed to the load capacity and static stiffness of conical bearing.

Originality/value
– Based on the characteristics of the conical bearing through analysis, this article suggests the front bearing with hard membrane restrictor (capillary) and the back bearing with soft membrane restrictor are the most appropriate for axial stiffness.
A study of 2,5-dimercapto-1,3,4-thiadiazole derivatives as multifunctional additives in water-based hydraulic fluid
Authors: Wang Junming , Wang Jianhua , Li Chunsheng , Zhao Gaiqing , Wang Xiaobo 
Published: May 2014

Purpose
– The purpose of this paper is to present the tribological, anticorrosion and antirust properties of three 2,5-dimercapto-1,3,4-thiadiazole (DMTD) derivatives as water-soluble additives in water–glycol hydraulic fluid.

Design/methodology/approach
– DMTD derivatives possessing excellent corrosion inhibiting and extreme-pressure (EP) properties have long been used as metal passivators and load-carrying additives in lubricating oils and grease. However, there are seldom literatures about DMTD derivatives as water-soluble lubricant additives as yet. In this work, three DMTD derivatives were synthesized and investigated as water-soluble additives in the water–glycol hydraulic fluid. Their tribological properties were evaluated in detail by four-ball wear test machine and Optimol SRV-IV oscillating friction and wear tester. Meanwhile, their anticorrosion and antirust properties were also investigated by copper strip corrosive tests and antirust tests, respectively. The worn surfaces were analyzed by scanning electron microscope and X-ray photonelectron spectroscope, and the EP, antiwear and friction-reducing mechanisms were primarily proposed.

Findings
– The synthesized three DMTD derivatives (coded as A, B and C) have excellent solubility in the base liquid of the water–glycol hydraulic fluid. The experimental results demonstrated that all these compounds, especially A, could remarkably improve the EP, antiwear and friction-reducing properties of the base liquid. Furthermore, they all have perfect copper corrosion inhibiting and antirust properties with low adding concentration (< 3 weight per cent) in the base liquid and hence could be used as multifunctional additives in the water–glycol hydraulic fluid.

Research limitations/implications
– This research only focused on the synthesized DMTD derivatives. If possible, some other thiadiazole derivatives also should be investigated.

Practical implications
– The synthesized DMTD derivatives, especially compound A, can be used as multifunctional water-soluble additives in the water–glycol hydraulic fluid.

Originality/value
– In this paper, three DMTD derivatives were synthesized and their tribological behaviors as water-soluble lubricant additives were investigated for the first time. In addition, the EP, antiwear and friction-reducing mechanisms were also put forward.
Effect of surface roughness, viscosity-pressure relationship and elastic deformation on lubrication performance of misaligned journal bearings
Authors: Sun Jun , Zhu Xinlong , Zhang Liang , Wang Xianyi , Wang Chunmei , Wang Hu , Zhao Xiaoyong 
Published: May 2014

Purpose– Current lubrication analyses of misaligned journal bearings were generally performed under some given preconditions. To make the lubrication analysis closer to the actual situation and usable to the journal bearing design, the purpose of this paper was to calculate the lubrication characteristics of misaligned journal bearings considering the viscosity-pressure effect of the oil, the surface roughness and the elastic deformation of the journal bearing at the same time.Design/methodology/approach– The lubrication of bearings was analyzed using the average Reynolds equation. The deformation of the bearing surface under oil film pressure was calculated by a compliance matrix method. The compliance matrix was established by finite element analysis of the bearing housing. The viscosity-pressure and viscosity–temperature equations were used in the analysis.Findings– The oil viscosity-pressure relationship has a significant effect on the lubrication of misaligned journal bearings. The surface roughness will affect the lubrication of misaligned journal bearings when the eccentricity ratio and angle of journal misalignment are all large. The directional parameter of the surface has an obvious effect on the lubrication of misaligned journal bearings. The deformation of the bearing surface has a remarkable effect on the lubrication of misaligned journal bearings.Originality/value– The lubrication characteristics of misaligned journal bearings were calculated considering the viscosity-pressure effect of the oil, the surface roughness and the elastic deformation of the journal bearing at the same time. The results of this paper are helpful to the design of the bearing.
The tribochemical study of novel phosphorous-nitrogen (P-N) type phosphoramidate additives in water
Authors: Yan Jincan , Bai Xuefeng , Li Jing , Ren Tianhui , Zhao Yidong 
Published: May 2014

Purpose
– The purpose of this paper is to investigate the tribological properties of novel phosphorous-nitrogen (P-N) type additives in water.

Design/methodology/approach
– The tribological properties of the novel P-N additives in water are compared with a commercial lubricant additive of the P-N type using a four-ball machine. The tribological mechanism was investigated by X-ray absorption near-edge structure (XANES) spectroscopy.

Findings
– The experimental results indicate that the phosphoramidate derivatives possess good anti-wear and friction-reducing properties. The XANES analysis shows that the prepared compounds can form a protective film containing phosphate and/or polyphosphate that affects the tribological behavior.

Originality/value
– The purpose of this paper is to investigate the tribological properties of the novel P-N type additives in water.
Understanding online shopping intention: the roles of four types of trust and their antecedents
Authors: Hsu Meng-Hsiang , Chuang Li-Wen , Hsu Cheng-Se 
Published: May 2014

Purpose– The purpose of this paper is to provide a better picture of factors influencing behavioral decisions in online shopping by identifying different targets of trust and discussing their antecedents and outcomes.Design/methodology/approach– Online survey data from 242 ihergo members were used to test the proposed model, and structural equation modeling with partial least squares was performed to analyze the measurement and structural models.Findings– The findings show that the four types of trust identified in this study are critical determinants of perceived risk and attitude. In addition, the majority of the antecedents are found to be associated with their respective types of trust.Research limitations/implications– The research extends the theory of reasoned action and prior research to discuss four types of consumer trust, as well as their respective antecedents and subsequent consequences. The result is a more descriptive model that better explicates consumers’ decision-making processes in online shopping.Practical implications– Given the intense competition between online shopping sites, web site managers should strive to provide a safe and user-friendly shopping environment. In addition, the vendor can enhance trust by encouraging satisfied customers to provide positive endorsements.Originality/value– This study is possibly the first of its kind, in identifying the four types of trust and their respective antecedents in the context of an online group-buying auction, and thus serves to enrich the existing literature concerning trust-building factors.
Firm web visibility and its business value
Authors: Wang Fang , Vaughan Liwen 
Published: May 2014

Purpose
– The purpose of this paper is to theoretically analyze and empirically test the business value of firm web visibility, including its relationship to advertising efficiency and long-term financial performance (i.e. shareholder value).

Design/methodology/approach
– A conceptual framework is established to analyze firm value of web visibility through its market effects. Hypotheses on the associations between firm web visibility and advertising efficiency and shareholder value are tested by cross-sectional analysis of 1,331 firms in six industries and four industry sectors. The authors control for several firm- and industry-level factors.

Findings
– The results consistently support the two hypotheses, i.e., first, a positive and significant relationship between firm web visibility and advertising efficiency; and second, a positive and significant relationship between firm web visibility and shareholder value.

Practical implications
– In addition to increasing web traffic, firm web visibility has business value and helps to enhance advertising efficiency and shareholder value. Managers can use the web references as a valuable tool for marketing success when the use of traditional advertising reaches saturation. Managers should actively monitor and use web visibility as a web management measure in practice.

Originality/value
– This research provides convincing evidence to support both short-term and long-term business value of web visibility and suggests that web visibility be recognized and managed as a market-based asset.
Determinants of the adjustment speed of capital structure
Authors: T. Lemma Tesfaye , Negash Minga 
Published: May 2014

Purpose– The purpose of this paper is to examine the role of institutional, macroeconomic, industry, and firm characteristics on the adjustment speed of corporate capital structure within the context of developing countries.Design/methodology/approach– The authors considers a sample of 986 firms drawn from nine developing countries in Africa over a period of ten years (1999-2008). The study develops dynamic partial adjustment models that link capital structure adjustment speed and institutional, macroeconomic, and firm characteristics. The analysis is carried out using system Generalized Method of Moments procedure which is robust to data heterogeneity and endogeneity problems.Findings– The paper finds that firms in developing countries do temporarily deviate from (and partially adjust to) their target capital structures. Our results also indicate that: more profitable firms tend to rapidly adjust their capital structures than less profitable firms; the effects of firm size, growth opportunities, and the gap between observed and target leverage ratios on adjustment speed are functions of how one measures capital structure; and adjustment speed tends to be faster for firms in industries that have relatively higher risk and countries with common law tradition, less developed stock markets, lower income, and weaker creditor rights protection.Research limitations/implications– Future research should focus on examination of the adjustment speed of debt maturity structure. Identification of industry-specific characteristics that affect the pace with which firms adjust their capital structure to the optimum is another possible avenue for future research.Practical implications– Our findings have practical implications for corporate managers, governments, legislators, and policymakers.Originality/value– The study focuses on firms in developing countries for which the literature on adjustment speed of capital structure is virtually non-existent. Furthermore, unlike previous works on capital structure, it explicitly models industry variable as one of the determinants of adjustment speed. Therefore, it contributes to the literature on capital structure and adjustment speed in general and to the literature on developing countries in particular.
Unfruitful cooperative purchasing
Authors: Pazirandeh Ala , Herlin Heidi 
Published: May 2014

Purpose– The purpose of this paper is to understand the impact of cooperative purchasing on buyers’ purchasing power. Purchasing in the humanitarian sector has traditionally been characterized by a low level of coordination due to inter-agency competition for funding, diverging mandates and other organizational differences. Relationships with commercial suppliers have also remained arm's-length and often dormant due to high levels of uncertainty and strict public procurement rules and regulations. However, recent pushes for increased efficiency and effectiveness are driving humanitarian agencies toward cooperative purchasing – a purchasing strategy that is claimed to be highly beneficial for members of the purchasing consortium not least for its ability to increase buyers’ purchasing power. In reality, the effectiveness of the strategy in increasing purchasing power is unclear.Design/methodology/approach– The authors study a single case of several humanitarian organizations aiming to increase their leverage in buying freight forwarding services by joining forces.Findings– Following several incidents during the process, the cooperative purchasing initiative did not contribute to increased power in the case. It was found that in addition to increased volumes, the effect of the strategy on other sources of power such as interconnections is also of importance.Research limitations/implications– The research is limited to the boundaries of a single case study including the perceptive view of respondents interviewed.Practical implications– The findings of the study provide insights for organizations aiming to practice cooperative purchasing.Originality/value– The findings of the study provide insights for organizations aiming to practice cooperative purchasing.