bluuebunny/crossref_metadata_2025_split huggingface dataset:
Recession effect in pricing efficiency of rubber futures: the emerging market’s experience
Authors: Thazhugal Govindan Nair Saji 
Published: October 2019

PurposeThe purpose of this paper is to investigate the recession effects in market efficiency of natural rubber futures contracts traded in India.Design/methodology/approachThe research draws inferences from Granger causality and Engle–Granger cointegration tests, which are administered separately on 14 year daily price data spanning into two distinct, non-overlapping time series of 2004–2008 and 2009–2017.FindingsAnalysis shows that rubber futures market is informationally efficient in price discovery. The results of cointegartion tests indicate that a long-term relationship does exist between futures and spot prices of the natural rubber in India. The recession effects in the market efficiency of rubber futures contracts are evident from the increase in optimal hedge ratios estimated with the cointegration methodology.Research limitations/implicationsThe study pursues a simple cointegration methodology to assess the causal relations between spot and futures market prices in the Indian context. Future studies investigating the long-run causal relations, with error correction framework, between spot and future prices of rubber from other leading rubber producing countries can validate the findings more on this issue.Practical implicationsThe research expects to pass on vital information inputs on the implications of future contracts to rubber traders for managing their portfolios. The study of this kind definitely will be a great help to farmers and exporters who are potentially interested in gaining access to a hedging vehicle.Originality/valueThe paper is unique in terms of understanding the effects of economic recession in information efficiency of futures market. Moreover, a limited number of studies have explored the functional utilities of rubber futures in emerging market context.
A generalized Livestock Gross Margin insurance program for the developing countries
Authors: Sun Yan , Tan Ken Seng 
Published: October 2019

Purpose
The purpose of this paper is to propose a new margin protection (MP) scheme for the producers of hog, cattle and dairy in the developing countries.

Design/methodology/approach
The proposed MP scheme is inspired by the Livestock Gross Margin (LGM) program that has been successfully implemented in US directly implementing the LGM program in developing countries can be difficult due to the rudimentary of the futures market with limited futures listing. To address this issue, the authors proxy the futures prices by relating to some relevant spot prices via an econometric model. The proxied futures prices, in turn, enable the implementation of a generalized LGM, which the authors denote as the MP scheme.

Findings
As China is the world’s largest consumption and production of pork, the authors describe the proposed MP scheme by demonstrating how a generalized LGM can be constructed for the Chinese hog producers. By empirically comparing to the pilot hog price index insurance for the Beijing’s hog producers, the authors find that the proposed MP scheme is more effective in providing MP for the producers.

Research limitations/implications
The proposed MP scheme still requires the availability of some relevant spot prices in order to use an econometric model to proxy the missing futures prices.

Originality/value
The value of this research stems from demonstrating how an MP scheme can be constructed for developing countries that have rudimentary futures markets.
Toward developing an environmental efficacy construct
Authors: Basil Debra Z. , Basil Michael , Lavack Anne Marie , Deshpande Sameer 
Published: October 2019

PurposeThe purpose of this study is to propose environmental efficacy as the perception of social, physical resource and temporal factors at one’s disposal that promote or impede behavior. In this exploratory study, four focus groups and a two-country survey provide support for a new environmental efficacy construct as an adjunct to self and response efficacies.Design/methodology/approachThis research examines environmental efficacy within the context of workplace safety. The research engaged participants from four focus groups as well as a survey of 358 young Canadian males and 494 young American males to test the proposed construct.FindingsFirst, qualitative responses from the focus groups supported environmental efficacy as a viable construct. Second, a factor analysis demonstrated environmental efficacy is distinct from self- and response efficacies. Third, regressions demonstrated that environmental efficacy predicts motivation to act, above and beyond self- and response efficacies.Research limitations/implicationsAs an exploratory study, only a limited number of scale items were included. The research was conducted within the workplace safety context, using young males, and the stimuli involved the use of fear appeals. These restrictions warrant additional research in the area of environmental efficacy.Practical implicationsThis study suggests that further development of the environmental efficacy construct may offer social marketers a more effective means of identifying and addressing barriers to desired behavior change. Such a measure should allow social marketers to improve understanding of the importance of environmental forces.Originality/valueThis research introduces a novel concept, environmental efficacy, and demonstrates that it is a distinctive and useful concept for understanding motivation to act. This concept is potentially valuable to social marketers seeking to enhance the effectiveness of their programs. It offers a tool to help identify barriers that can thwart the effectiveness of interventions.
Social media usage and commercialization performance: role of networking capability
Authors: Maghsoudi Ganjeh Yasser , Khani Naser , Alem Tabriz Akbar 
Published: October 2019

PurposeThis paper aims to propose and test a research model that links social media usage with networking capabilities on the commercialization performance.Design/methodology/approachThe target population of this study consisted of 530 managers and experts in knowledge-based firms in Science and Technology Parks of Isfahan (Iran), which were active in the electronics and electronic engineering, bio, renewable energy, nano and information and communication technologies. To determine the effects of the social media and networking capability on the commercialization performance in knowledge-based firms, this study collected the data through a questionnaire survey with knowledge-based firms and conducted statistical analysis. The unit of analysis is the entire firm. The random sampling method was applied in this study. This study mainly uses the validated existing scales of previous studies on Likert-type scales with response options ranging from 1 to 5. To increase the response rate and accuracy, the researchers in this study also conducted phone and e-mail survey. A total of 230 questionnaires were conducted to remove the questionnaires with inadequate or missing answers, and the final 220 cases were selected as valid samples.FindingsFirst, this research confirmed that social media usage can positively improve commercialization performance. Second, this research confirmed the mediating role of the networking capability on the relationship between social media usage and commercialization performance. In fact, social media tools represent a potential vehicle to help firms create better relationships with partners and increase commercialization performance via these mechanisms.Originality/valueThis study contributes to the existing literature by integrating the domains of social media usage and business networks perspective. Social media has revolutionized the way firms interact with business partners. A salient characteristic of today’s business setting is that partners use social media to nurture and sustain their network relationships with others (Kimet al., 2016). Moreover, based on the dynamic capability theory and business networks perspective, the authors introduce the impression management capability as a networking capability dimension that has been neglected and mentioned only briefly.
Smart healthcare
Authors: Zeadally Sherali , Siddiqui Farhan , Baig Zubair , Ibrahim Ahmed 
Published: October 2019

Purpose
The aim of this paper is to identify some of the challenges that need to be addressed to accelerate the deployment and adoption of smart health technologies for ubiquitous healthcare access. The paper also explores how internet of things (IoT) and big data technologies can be combined with smart health to provide better healthcare solutions.

Design/methodology/approach
The authors reviewed the literature to identify the challenges which have slowed down the deployment and adoption of smart health.

Findings
The authors discussed how IoT and big data technologies can be integrated with smart health to address some of the challenges to improve health-care availability, access and costs.

Originality/value
The results of this paper will help health-care designers, professionals and researchers design better health-care information systems.
Challenges facing social entrepreneurship
Authors: Seda Amr , Ismail Mamdouh 
Published: October 2019

Purpose
Although there are over 55,000 social enterprises operating in Egypt, the social entrepreneurship field is still failing to create the desired social change. This paper aims to explore the challenges faced by the field with a special focus on government related challenges as well as offer a set of recommendations to the Egyptian government to enhance the field.

Design/methodology/approach
The research was carried out in two phases; reviewing the literature around the topic through a secondary research followed by an empirical research interviewing four social enterprises, the ministry of social solidarity and experts in the field of social entrepreneurship.

Findings
The paper arrived to several challenges and they were organized into three main themes: challenges related to policy-making and other legal aspects; challenges related to institutional and operational support; and challenges related to social, educational and cultural awareness of the field and its ecosystem. The paper also came up with a set of nine recommendations directed to the Egyptian Government.

Originality/value
The originality and value of this research is that it offers first hand viewpoints of the challenges facing the field of social entrepreneurship in Egypt as well as offer practical recommendations to the Egyptian Government to overcome them.
An international perspective of job grading in the Egyptian administrative system
Authors: Amin Ibrahim 
Published: October 2019

Purpose
The study seeks to analyze concepts of “career grades” and “job grading,” to highlight their importance and objectives for the efficiency of administrative systems. In addition, it identifies the international standards that can be used to draw grading systems. It explores the most important types of grade structures. It also clarifies grading systems in the Egyptian administrative system. It indicates some methods that can be considered a form of career progression.

Design/methodology/approach
The study employs descriptive, analytical, as well as, legal approaches; it analyzes the information given in the study in terms of relevant legal texts.

Findings
The study identifies precise definitions of both career grades and job grading, referring to these concepts in the Egyptian administrative system. It also suggests that there is no ideal hierarchy to be applied in all administrative systems. Therefore, the study provides some criteria that help to form the appropriate grade structure for each system.

Originality/value
The study analyses some literature on “job grading,” its objectives, its criteria and its main types, presenting an integrated framework that can be used to develop career-structure systems. Finally, the study identifies some methods that can be considered as a means of grading.
Benchmarking the complex geometric profiles, dimensional accuracy and surface analysis of printed parts
Authors: Subbaian Kaliamoorthy Paridhi , Subbiah Rajkumar , Bensingh Joseph , Kader Abdul , Nayak Sanjay 
Published: October 2019

Purpose
Additive manufacturing has paved a way for geometrical freedom and mass customization of new and innovative products. However, it has a few limitations in printing complex geometries and sizes. The purpose of this paper is three-dimensional printing of metal parts using selective laser melting (SLM) has several intricacies.

Design/methodology/approach
To test the capabilities of SLM, the complex geometries of varying sizes, orientations, shapes such as square and cylindrical features, thin wall structures and holes were checked for dimensional accuracy and surface roughness.

Findings
The outcome of the study represents the capabilities of SLM and provide insight for solving the technological issues and processing constraint in the manufacture of metal parts from aluminum alloy. The analysis has proven that there is significant accuracy in dimension for large features in comparison with smaller one. The dimensional reproducibility was determined with the aid of an optical measuring system and the range of errors were calculated. These results show that the dimensional accuracy of the features in the printed part was within acceptable tolerance limits. This paper also investigated the significant contributing factors influencing printing of two and three-dimensional surface roughness based on the result of surface profilometer and it was observed that the surface was smoothened with the presence of overhangs and supports.

Originality/value
The ability of SLM to fabricate conformer cooling channels to support mould fabrication was tested. From the experimental result, it was observed that the quality of printing of conformal cooling channels depended on the diameter of channels with larger distortions in the channel having smaller diameter. The innovative aspect of the work was the study of build orientation combined with the investigated material.
Design of experiments – overcome hindrances and bad practices
Authors: Costa Nuno 
Published: October 2019

Purpose
The purpose of this paper is to address misconceptions about the design of experiments (DoE) usefulness, avoid bad practices and foster processes’ efficiency and products’ quality in a timely and cost-effective manner with this tool.

Design/methodology/approach
To revisit and discuss the hindrances to DoE usage as well as bad practices in using this tool supported on the selective literature from Web of Science and Scopus indexed journals.

Findings
A set of recommendations and guidelines to mitigate DoE hindrances and avoid common errors or wrong decisions at the planning, running and data analysis phases of DoE are provided.

Research limitations/implications
Errors or wrong decisions in planning, running and analyzing data from statistically designed experiments are always possible so the expected results from DoE usage are not always 100 percent guaranteed.

Practical implications
Novice and intermediate DoE users have another perspective for developing and improving their “test and learn” capability and be successful with DoE. To appropriately plan and run statistically designed experiments not only save the user of DoE from incorrect decisions and depreciation of their technical competencies as they can optimize processes’ efficiency and products’ quality (reliability, durability, performance, robustness, etc.) in a structured, faster and cheaper way at the design and manufacturing stages.

Social implications
DoE usefulness will be increasingly recognized in industry and academy and, as consequence, better products can be made available for consumers, business performance can improve, and the link between industry and academy can be strengthened.

Originality/value
A supplemental perspective on how to succeed with DoE and foster its usage among managers, engineers and other technical staff is presented.
Improved target illumination at Ludvika mines of Sweden through seismic‐interferometric surface‐wave suppression
Authors: Balestrini Florencia , Draganov Deyan , Malehmir Alireza , Marsden Paul , Ghose Ranajit 
Published: October 2019

ABSTRACTIn mineral exploration, new methods to improve the delineation of ore deposits at depth are in demand. For this purpose, increasing the signal‐to‐noise ratio through suitable data processing is an important requirement. Seismic reflection methods have proven to be useful to image mineral deposits. However, in most hard rock environments, surface waves constitute the most undesirable source‐generated or ambient noise in the data that, especially given their typical broadband nature, often mask the events of interest like body‐wave reflections and diffractions. In this study, we show the efficacy of a two‐step procedure to suppress surface waves in an active‐source reflection seismic dataset acquired in the Ludvika mining area of Sweden. First, we use seismic interferometry to estimate the surface‐wave energy between receivers, given that they are the most energetic arrivals in the dataset. Second, we adaptively subtract the retrieved surface waves from the original shot gathers, checking the quality of the unveiled reflections. We see that several reflections, judged to be from the mineralization zone, are enhanced and better visualized after this two‐step procedure. Our comparison with results from frequency‐wavenumber filtering verifies the effectiveness of our scheme, since the presence of linear artefacts is reduced. The results are encouraging, as they open up new possibilities for denoising hard rock seismic data and, in particular, for imaging of deep mineral deposits using seismic reflections. This approach is purely data driven and does not require significant judgment on the dip and frequency content of present surface waves, which often vary from place to place.
Can Helicobacter pylori Colonization Affect the Phosphate Binder Pill Burden in Dialysis Patients?
Authors: Korucu Berfu , Helvaci Ozant , Sadioglu Rezzan , Ozbas Burak , Yeter Hasan , Derici Ulver 
Published: October 2019

AbstractPhosphate binder pill (PBP) burden is a significant problem in dialysis patients. Phosphate absorption through the paracellular pathway increases in relatively acidic pH. In this study, we evaluated the effect of factors contributing to duodenal pH—Helicobacter pylori (HP), proton pump inhibitors (PPIs), and NaHCO3 capsules—on PBP burden. We evaluated 255 dialysis patients with gastric biopsies and excluded patients with low Kt/V, gastrectomy, and parathyroidectomy. Patients were divided into groups and subgroups regarding HP existence, use of PPI, or NaHCO3 capsules. HP+ group had significantly higher PBP burden and PBP equivalent doses (P < 0.001; both). HP+ subgroup not using daily PPIs or NaHCO3 capsules had the highest PBP burden and PBP equivalent doses (P < 0.001; both). HP− subgroups had similar PBP and PBP equivalent doses (P = 0.446 and P = 0.382; respectively). HP colonization might affect the PBP burden in dialysis patients due to a decrease of duodenal pH.
Elsterian ice‐sheet retreat in the southern North Sea: antecedent controls on large‐scale glaciotectonics and subglacial bed conditions
Authors: Mellett Claire L. , Phillips Emrys , Lee Jonathan R. , Cotterill Carol J. , Tjelta Tor Inge , James Leo , Duffy Callum 
Published: October 2019

High‐resolution shallow sub‐bottom seismic survey data obtained for the Dudgeon windfarm site located 50 km offshore of the north Norfolk coast in the southern North Sea have revealed that the chalk bedrock in this area is overlain by sediments deposited during the Elsterian and Weichselian glacial periods. A buried N–S‐trending subglacial drainage channel (tunnel valley) filled with Swarte Bank Formation (MIS 12) sediments indicates that the maximum extent of the Elsterian ice‐sheet margin occurred further to the south. Detailed cross‐sections constructed from the seismic data reveal the presence of buried thrust‐block moraine system composed of deformed (folded and thrusted) Swarte Bank Formation sediments, lying beneath a younger sequence of sediments dominated by the glacigenic Bolders Bank Formation (MIS 2). The geometry of the folds and sense of offset on the thrusts, coupled with the morphology of the ridge‐like landforms within this buried moraine system, are consistent with deformation having occurred in response to ice‐push from the N/NE. The chalk bedrock that underlies the glaciotectonized sequence is thought to have provided an antecedent control on the location and preservation of this moraine system. A three‐phase model is proposed to explain the evolution of this thrust‐moraine complex that formed at the oscillating ice margin during the overall active retreat of the Elsterian ice sheet.
Design, synthesis, antimicrobial, and DNA gyrase inhibitory properties of fluoroquinolone–dichloroacetic acid hybrids
Authors: Seliem Israa A. , Panda Siva S. , Girgis Adel S. , Nagy Yosra I. , George Riham F. , Fayad Walid , Fawzy Nehmedo G. , Ibrahim Tarek S. , Al‐Mahmoudy Amany M. M. , Sakhuja Rajeev , Abdel‐samii Zakaria K. M. 
Published: October 2019

AbstractA series of new fluoroquinolone conjugates 8a–g and 9a–f were synthesized via benzotriazole‐mediated synthetic approach with good yield and purity. Some of the synthesized analogs exhibited significant antibacterial properties against Escherichia coli and Staphylococcus aureus with potency higher than that of the parent drugs through in vitro standard bioassay procedure (conjugates 8c and 8d reveal antimicrobial properties with potency 1.9, 61.9, 20.7 and 2.4, 37.1, 8.3 folds relative to the parent antibiotic 6 against E. coli, S. aureus, and Enterococcus faecalis, respectively). The observed experimental data were supported by enzymatic DNA gyrase inhibitory property. Developed BMLR‐QSAR model validates the observed experimental data and recognizes the parameters responsible for the enhanced antibacterial properties.
Chronic pelvic pain and rectal prolapse invite consideration of enterocele
Authors: Brochard C. , Ropert A. , Chambaz M. , Gouriou C. , Cardaillac C. , Grainville T. , Bouguen G. , Siproudhis L. 
Published: October 2019

AbstractAimData on the pathogenesis and symptoms of enterocele are limited. The objectives of this study were to determine the clinical phenotype of patients with enterocele, to highlight the main functional and/or anatomical associations and to improve the accuracy of the preoperative assessment of pelvic floor disorders.MethodA total of 588 patients who were referred to a tertiary unit for an anorectal complaint completed a self‐administered questionnaire and underwent physical examination, anorectal manometry and defaecography. Using defaecography, enterocele was defined as a radiological hernia of the small bowel into an enlarged rectovaginal space. One hundred and thirty‐five patients with enterocele were age‐ and gender‐matched with 270 patients without enterocele. Factors associated with enterocele were assessed using univariate and multivariate analysis models.ResultsPatients with enterocele were less frequently obese than patients without enterocele (8/135 vs 36/270; P = 0.02) and more frequently had a past history of pelvic surgery (51/135 vs 75/270; P = 0.04). They complained more frequently of pelvic pain on bearing down (29/135 vs 24/270; P = 0.003), anal procidentia (37/135 vs 46/270; P = 0.01) and more frequently had irritable bowel syndrome (83/135 vs 131/270; P = 0.01) and severe constipation according to the Kess score (104/135 vs 182/270; P = 0.04). Anorectal function was comparable between the two groups. Patients with enterocele had more frequent rectoceles and overt rectal prolapses than patients without enterocele.ConclusionsEnterocele should be investigated in patients with chronic pelvic pain, overt rectal prolapse and/or a past history of pelvic surgery.