bluuebunny/crossref_metadata_2025_split huggingface dataset:
Application of vendor rationalization strategy for manufacturing cycle time reduction in engineer to order (ETO) environment
Authors: Seth Dinesh , Rastogi Subhash 
Published: October 2018

PurposeThe purpose of this paper is to demonstrate the application of vendor rationalization strategy for streamlining the supplies and manufacturing cycle time reduction in an Indian engineer-to-order (ETO) company. ETO firms are known for a large number of vendors, co-ordination hassles, rework problems and its impact on cycle time and operational excellence.Design/methodology/approachThe research demonstrates the case-based application of Kraljic’s matrix for supply and leverages items, on-the-job observations, field visits, discussions and analysis of supplies reports.FindingsThe study guides on the rationalization of supplies and the necessary strategic alignments that can significantly reduce supply risk, costs, manufacturing and delivery cycle time along with co-ordination hassles. The study depicts the challenges of ETO environment with respect to supplies, and demonstrates the effectiveness of vendor rationalization application for the case company and weaknesses of commonly practiced vendor management approaches.Practical implicationsTo be competitive, companies should rationalize supply items and vendors based on the nature of items and their subsequent usage by applying Kraljic’s matrix-based classification. The immediate implication of vendor rationalization is misunderstood as reducing supply base, but it does much more and includes review of supplies, nature of items and strategic alignments, leading to win-win situation for company and suppliers.Originality/valueFor the rationalization of supplies, while procuring and dealing with vendors, executives should envisage engineering nature of components, considering cross-functional requirements and integration of components in context to ETO products/projects environments. There is a dearth of studies focusing on vendor rationalization aspects in ETO setups in fast-developing country context.
Two modes of learning-oriented leadership: a study of first-line managers
Authors: Ellström Eva , Ellström Per-Erik 
Published: October 2018

Purpose
The purpose of this study was to explore what learning-oriented leadership could mean in practice and to identify possible sources of variability in this leadership between first-line managers (FLMs). The empirical basis of the study comprised FLMs in nursing homes for elderly care.

Design/methodology/approach
The study was carried out using a sequential mixed-method design based on interviews, observations and documentary analysis.

Findings
The study contributes an in-depth analysis of two modes of learning-oriented leadership: development-oriented and production-oriented. The two orientations represent an open and enabling pattern versus a constraining and controlling pattern of leading and organizing employee learning and development. The observed differences in learning-oriented leadership between the FLMs were interpreted in terms of the demands–constraints–choices model proposed by Stewart (1982; 1989).

Research limitations/implications
Future research should include data from employees to analyze how the mode of learning-oriented leadership shapes the conditions and opportunities for learning at work.

Practical implications
Employee learning and development issues should be clearly linked to business strategies, and it is imperative that senior managers actively support and follow up on FLMs’ work with these issues. Furthermore, there is a strong need for training and development of FLMs – formal and informal – to improve their knowledge of and skills in leading and organizing workplace learning.

Originality/value
The study adds to previous research by elaborating what learning-oriented leadership could mean in practice and how it can be theoretically understood.
Survival of probiotic Lactobacillus plantarum and Enterococcus faecium in alginate beads during stress treatments
Authors: Cavalheiro Carlos , Ruiz-Capillas Claudia , Herrero Ana Maria , Jiménez-Colmenero Francisco , de Menezes Cristiano Ragagnin , Fries Leadir Lucy 
Published: October 2018

Purpose
This study aims to protect Lactobacillus plantarum and Enterococcus faecium encapsulated in alginate beads during stress treatments, such as high temperatures and concentrations of sodium chloride (NaCl) and sodium nitrite (NaNO2).

Design/methodology/approach
Free and encapsulated probiotics were subjected to 70 and 80°C during 5, 10, 20 and 30 min. In addition, the probiotics were subjected to concentrations of 0.5, 1.0, 2.5 and 5.0 per cent NaCl and 0.5 and 1.0per cent of NaNO2.

Findings
Free Lactobacillus plantarum was more resistant to heat than free Enterococcus faecium. Alginate-encapsulated Lactobacillus plantarum (ALP) also was more resistant to heat treatments than alginate-encapsulated Enterococcus faecium (AEF). After 30 min at 70°C, ALP showed levels about 6.9 log CFU/g while AEF presented 4.3 log CFU/g (p = 0.005). However, at 80°C, ALP maintained levels higher than 6 log CFU/g for up to 10 min, while AEF was able to maintain those levels only for approximately 5 min (p = 0.003). Encapsulation process provided adequate protection for both probiotics against NaCl. In relation to NaNO2 concentrations, 0.5 and 1.0 per cent reduced viability of both probiotics (p = 0.014), either as free cells or as alginate-encapsulated forms.

Practical implications
Alginate beads containing probiotics is an interesting alternative for application in foods such as cooked meat products.

Originality/value
Alginate beads elaborated with milk powder, inulin and trehalose were effective to protect probiotics in stress situations similar to those can be found in the processing of foods, such as cooked meat products.
Track evolution and surface characteristics of selective laser melting Ti6Al4V
Authors: Zhang Luo , Zhu Haihong , Liu Jiahe , Zeng Xiaoyan 
Published: October 2018

Purpose
The purpose of this paper is to investigate the track evolution and surface characteristics of selective laser melting Ti6Al4V.

Design/methodology/approach
In the present paper, Ti6Al4V single-track, multi-track and bulk sample were formed at different scanning speed by selective laser melting (SLM). Then, the surface morphology, three-dimension profile and surface roughness were evaluated. The width of the single and multi-track was measured and compared.

Findings
The results showed that the heat accumulation played a great role on the evolution of tracks and surface characteristics from single-track to multi-track and to bulk. The surface morphology of the subsequent tracks became more regular when the single-track was irregular at the same high scanning speed. The width of last track Wn was always larger than that of the first track W1. The Ra of the top of the bulk increased with the increase of the scanning speed, this trend was as same as the Ra of the single-track, but the trend of Ra of the side was opposite.

Originality/value
The effect of heat accumulation on the track evolution and surface characteristics is obtained. The results can help to derive a smooth surface with a regular and continuous track in SLM.
The role of additive technologies in the prototyping issues of design
Authors: Carfagni Monica , Fiorineschi Lorenzo , Furferi Rocco , Governi Lapo , Rotini Federico 
Published: October 2018

Purpose
This paper aims to argue about the involvement of additive technologies (ATs) in the prototyping issues of designing. More precisely, it reviews the literature contributions focused on the different perspectives of prototyping activities for design purposes, searching for both available knowledge and research needs concerning the correct exploitation of ATs.

Design/methodology/approach
A two-step literature review has been performed. In the first step, general information has been retrieved about prototyping issues related to design. In the second step, the literature searches were focused on retrieving more detailed information about ATs, concerning each of the main issues identified in the previous step. Extracted information has been analyzed and discussed for understanding the actual coverage of the arguments and for identifying possible research needs.

Findings
Four generally valid prototyping issues have been identified in the first step of the literature review. For each of them, available information and current lacks have been identified and discussed about the involvement of AT, allowing to extract six different research hints for future works.

Originality/value
This is the first literature review concerning AT-focused contributions that cover the complex and inter-disciplinary issues characterizing prototyping activities in design contexts.
A chunk-based slicer for cooperative 3D printing
Authors: McPherson Jace , Zhou Wenchao 
Published: October 2018

Purpose
The purpose of this research is to develop a new slicing scheme for the emerging cooperative three-dimensional (3D) printing platform that has multiple mobile 3D printers working together on one print job.

Design/methodology/approach
Because the traditional lay-based slicing scheme does not work for cooperative 3D printing, a chunk-based slicing scheme is proposed to split the print job into chunks so that different mobile printers can print different chunks simultaneously without interfering with each other.

Findings
A chunk-based slicer is developed for two mobile 3D printers to work together cooperatively. A simulator environment is developed to validate the developed slicer, which shows the chunk-based slicer working effectively, and demonstrates the promise of cooperative 3D printing.

Research limitations/implications
For simplicity, this research only considered the case of two mobile 3D printers working together. Future research is needed for a slicing and scheduling scheme that can work with thousands of mobile 3D printers.

Practical implications
The research findings in this work demonstrate a new approach to 3D printing. By enabling multiple mobile 3D printers working together, the printing speed can be significantly increased and the printing capability (for multiple materials and multiple components) can be greatly enhanced.

Social implications
The chunk-based slicing algorithm is critical to the success of cooperative 3D printing, which may enable an autonomous factory equipped with a swarm of autonomous mobile 3D printers and mobile robots for autonomous manufacturing and assembly.

Originality/value
This work presents a new approach to 3D printing. Instead of printing layer by layer, each mobile 3D printer will print one chunk at a time, which provides the much-needed scalability for 3D printing to print large-sized object and increase the printing speed. The chunk-based approach keeps the 3D printing local and avoids the large temperature gradient and associated internal stress as the size of the print increases.
Thermal simulation of the cooling down of selective laser sintered parts in PA12
Authors: Li Xiaopeng , Van Hooreweder Brecht , Lauwers Wout , Follon Bavo , Witvrouw Ann , Geebelen Kurt , Kruth Jean-Pierre 
Published: October 2018

Purpose
The cooling process of polymer components fabricated by selective laser sintering (SLS) plays a vital role in determining the crystallinity, density and the resultant properties of the produced parts. However, the control and optimization of the cooling process remains challenging. The purpose of this paper is to therefore investigate the cooling process of the SLS fabricated polyamide 12 (PA12) components through simulations. This work provides necessary fundamental insights into the possibilities for optimization and control of this cooling process for achieving desired properties.

Design/methodology/approach
The thermal properties of the PA12 powder and SLS fabricated PA12 components including density, specific heat and thermal conductivity were first determined experimentally. Then, the finite element method was used to optimize a container (a cuboid aluminum box where PA12 parts are built by the SLS) geometry in which the SLS parts can cool down in a controlled manner. Also, the cooling parameters required for maximum temperature homogeneity and minimum cooling time were determined.

Findings
Two different approximations in the finite element (FE) model were used and compared. It was found that the approximation which considers powder as a solid medium with porous material properties gives better results as compared to the approximation which treats powder as a collection of air and particles with solid material properties. The results also showed that the geometry of the containers has an important influence on the cooling process of the SLS fabricated PA12 components regarding temperature homogeneity and cooling time required. A container with a small width, long length and high height tends to result in a more homogenous temperature distribution during the cooling process.

Originality/value
Thermal constants of PA12 powder and parts were accurately determined as a starting point for numerical simulations. The FE model developed in this work provides useful and necessary information for the optimization and control of the cooling process of the SLS fabricated PA12 components and can thus be used for ensuring high-quality products with desired component properties.
Trust and its impact towards continuance of use in government-to-business online service
Authors: Pinem Ave Adriana , Immanuella Ivonne Margi , Hidayanto Achmad Nizar , Phusavat Kongkiti , Meyliana Meyliana 
Published: October 2018

Purpose
This study aims to understand the antecedent of trust towards government-to-business (G2B) service in Indonesia. Trust will be viewed through four aspects, namely, cognition-based trust, personality-oriented trust, affect-based trust and experience–based trust. Then, these antecedents of trust were examined as the factors of continuance intention by extending the expected confirmation theory (ECT).

Design/methodology/approach
Data were collected through a quantitative approach, and 389 respondents were involved in the study. The respondents are the investors who represent their organization which uses e-government service to report their investment activities to the Investment Coordinating Board of Indonesia. Data were analyzed using partial least square structural equation modelling approach with WarpPLS 4.0.

Findings
The result shows that factors that determine a user’s trust in government online service are service quality, trust towards government entity, recommendation to use the service and user’s habit of using the service. Factors that do not determine a user’s trust in government online service is a disposition to trust. Another finding is that a user’s trust on an online service does not directly influence his/her continuance of use. Trust will impact the continuance of use through perceptions of benefits and perceived satisfaction of using the online service.

Research limitations/implications
ECT is applicable in G2B process. Organizations have a perception of benefit while using a public e-service and confirm the perception through their experience while using an e-service to gain satisfaction, and this will encourage them to continue using the service.

Practical implications
To improve organizations’ trust on the e-service, the government needs to improve the e-service quality (by evaluating the efficiency, privacy, user support, reliability and information quality), investor familiarity of the system (training or socialization), investor trust on the government entity (improve the employee competence) and recommendation on using the system.

Originality/value
Trust dimension has also been studied to be a factor that influences the intention or continuance of use of technology; however, it has rarely been studied towards its effect in the ECT’s context. In e-government study, there are various studies related to government-to-citizen (G2C) concept. However, the research in government-to-business (G2B) area that has not been explored much.
Marine vibrators: the new phase of seismic exploration
Authors: Laws R.M. , Halliday D. , Hopperstad J.‐F. , Gerez D. , Supawala M. , Özbek A. , Murray T. , Kragh E. 
Published: October 2018

ABSTRACTMarine seismic vibrators are generally considered to be less intrusive than airguns from an environmental perspective. This is because they emit their energy spread out in time, rather than in a single, high‐intensity pulse. There are also significant geophysical benefits associated with marine vibrators, and they stem from the ability to specify in detail the output acoustic waveform. The phase can be specified independently at each frequency. Such detailed control cannot be achieved with conventional airgun sources, where the phase can only be modified using simple overall time delays. The vibrator phase can be employed in several different ways: it can be applied to the overall source phase in a sequence so that it varies from one source point to the next; it can be applied to the individual vibrators within the source array so the source directivity is changed; it can be applied to the overall source phase of each source in a simultaneous source acquisition. Carefully designed phase sequences can attenuate the residual source noise, and this in turn allows extra source points to be interleaved between the conventional ones. For these extra source points, the relative phase of the vibrators within the array can be chosen to create a transverse gradient source, which illuminates the earth predominantly in directions out of the plane of the sail line without left/right ambiguity. If seismic vibrator data are acquired using interleaved conventional and transverse gradient sweeps, more information is collected per kilometre of vessel travel than is the case in conventional acquisition. This richer data acquisition leads to the possibility of acquiring all the necessary seismic data in a shorter time. Three‐dimensional reconstruction techniques are used to recover the same image quality that would have been obtained using the conventional, more time‐consuming acquisition. For a marine vibrator to be suitable for these techniques it must, in general terms, have ‘high fidelity’. The precise device specifications are defined through realistic end‐to‐end simulations of the physical systems and the processing. The specifications are somewhat more onerous than for a conventional vibrator, but they are achievable. A prototype vibrator that satisfies these requirements has been built. In a simulated case study of a three‐dimensional deep‐water ocean bottom node survey, the seismic data could have been acquired using marine vibrators in one third of the time that it would have taken using airguns.
Estimating the hospital costs of inpatient harms
Authors: Anand Priyanka , Kranker Keith , Chen Arnold Y. 
Published: October 2018

ObjectiveTo estimate the additional hospital costs associated with inpatient medical harms occurring during an index inpatient admission and costs from subsequent readmissions within 90 days.Data Source2009 to 2011 Healthcare Cost and Utilization Project's State Inpatient Databases from 12 states.Study DesignWe compare hospital costs incurred by patients experiencing a specific harm during their hospital stay to the costs incurred by similar patients who did not experience that harm.Data ExtractionWe extracted records for adult patients admitted for a reason other than rehabilitation or mental health, were at risk of a harm, and were admitted for less than a year.Principal FindingsThe costliest inpatient harms, such as surgical site infections and severe pressure ulcers, are associated with approximately $30 000 in additional index stay costs per harm. Less costly harms, such as catheter‐ or hospital‐associated urinary tract infections and venous thromboembolism, can add $6000 to $13 000. Birth and obstetric traumas add as little as $100.ConclusionsOur analysis represents rigorous estimates of the hospital costs of a variety of inpatient harms; these should be of interest to health care administrators and policy makers to identify areas for cost savings to the health care system.
A Retrospective Study on Erythropoiesis Stimulating Agent Dose Reducing Potential of an Anti‐Platelet Activation Membrane Dialyzer in Hemodialysis Patients
Authors: Kakuta Takatoshi , Ishida Mari , Komaba Hirotaka , Suzuki Hajime , Fukagawa Masafumi 
Published: October 2018

AbstractOur previous small‐scale trial demonstrated an erythropoiesis stimulating agent (ESA)‐sparing potential of the TORAYLIGHT NV (NV) dialyzer in hemodialysis patients with high interleukin‐6 levels. We now retrospectively explored this ESA‐sparing potential of the NV dialyzer in 122 and 129 prevalent dialysis patients who were on the NV and conventional polysulfone (PS) dialyzers, respectively, for 12 months. ESA resistance index (ERI) increased with the PS dialyzers whereas neither ERI nor ESA dose changed with the NV dialyzer. Analyses of baseline ERI or ESA dose‐based subgroups revealed a decrease in ERI and ESA dose with the NV dialyzer in patients with a baseline ERI ≥12 IU·dL/week·kg·g Hb (P < 0.05) and in those with a baseline ESA dose >6000 IU/week (P < 0.001), respectively. Neither ERI nor ESA dose improved in the corresponding subgroups on the PS dialyzers. These findings suggest that NV dialyzer can improve ESA responsiveness in hemodialysis patients with advanced ESA resistance.
Relationship between long‐chain omega‐3 polyunsaturated fatty acid intake and ankle brachial index, pulse wave velocity and resting heart rate in a sample of overweight adults: A secondary analysis of baseline data in the HealthTrack study
Authors: Senevirathne Anjana , Neale Elizabeth , Peoples Gregory , Tapsell Linda 
Published: October 2018

AimThe present study aimed to explore the association between dietary long‐chain omega‐3 polyunsaturated fatty acid (LCn3PUFA) intake and cardiovascular risk indicators (ankle brachial index, resting heart rate and brachial‐ankle pulse wave velocity) in a clinical sample of overweight and obese participants volunteering for a weight loss trial.MethodsThis was a secondary analysis of baseline data from the HealthTrack study (n = 351). LCn3PUFA intake was calculated via a diet history and the association with ankle brachial index, resting heart rate and brachio‐ankle pulse wave velocity was explored using linear regression after controlling for covariates.ResultsLCn3PUFA intake was inversely associated with ankle brachial index (R2 change = 0.021, F change (1, 339) = 8.864, P < 0.05) and resting heart rate (R2 change = 0.014, F change (1, 342) = 5.337, P < 0.05) but not with brachio‐ankle pulse wave velocity (R2 change = 0.001, F change (1, 339) = 0.725, P > 0.05).ConclusionsIn this clinical sample of overweight adults, LCn3PUFA consumption was significantly associated with a lower resting heart rate, adding to the current evidence on the potential benefits of LCn3PUFA consumption. It also supports the value of targeting a diet rich in this nutrient when planning future dietetic approaches. Relationships with ankle brachial index and pulse wave velocity require further investigation. Future research should assess the effect of changes in dietary LCn3PUFA intake on novel cardiovascular risk indicators.