bluuebunny/crossref_metadata_2025_split huggingface dataset:
National freight demand modelling: a tool for macrologistics management
Authors: Havenga Jan Hendrik , Simpson Zane Paul 
Published: September 2018

Purpose
The purpose of this paper is to present the results of South Africa’s national freight demand model and related logistics cost models, and to illustrate the application of the modelling outputs to inform macrologistics policy.

Design/methodology/approach
Spatially and sectorally disaggregated supply and demand data are developed using the input-output (I-O) model of the economy as a platform, augmented by actual data. Supply and demand interaction is translated into freight flows via a gravity model. The logistics costs model is a bottom-up aggregation of logistics-related costs for these freight flows.

Findings
South Africa’s logistics costs are higher than in developed countries. Road freight volumes constitute 80 per cent of long-distance corridor freight, while road transport contributes more than 80 per cent to the country’s transport costs. These challenges raise concerns regarding the competitiveness of international trade, as well as the impact of transport externalities. The case studies highlight that domestic logistics costs are the biggest cost contributor to international trade logistics costs and can be reduced through inter alia modal shift. Modal shift can be induced through the internalisation of freight externality costs. Results show that externality cost internalisation can eradicate the societal cost of freight transport in South Africa without increasing macroeconomic freight costs.

Research limitations/implications
Systematic spatially disaggregated commodity-level data are limited. There is however a wealth of supply, demand and freight flow information collected by the public and private sector. Initiatives to create an appreciation of the intrinsic value of such information and to leverage data sources will improve freight demand modelling in emerging economies.

Originality/value
A spatially and sectorally disaggregated national freight demand model, and related logistics costs models, utilising actual and modelled data, balanced via the national I-O model, provides opportunities for increased accuracy of outputs and diverse application possibilities.
Collaboration in urban distribution of online grocery orders
Authors: Zissis Dimitris , Aktas Emel , Bourlakis Michael 
Published: September 2018

Purpose
Population growth, urbanisation and the increased use of online shopping are some of the key challenges affecting the traditional logistics model. The purpose of this paper is to focus on the distribution of grocery products ordered online and the subsequent home delivery and click and collect services offered by online retailers to fulfil these orders. These services are unsustainable due to increased operational costs, carbon emissions, traffic and noise. The main objective of the research is to propose sustainable logistics models to reduce economic, environmental and social costs whilst maintaining service levels.

Design/methodology/approach
The authors have a mixed methodology based on simulation and mathematical modelling to evaluate the proposed shared logistics model using: primary data from a major UK retailer, secondary data from online retailers and primary data from a consumer survey on preferences for receiving groceries purchased online. Integration of these three data sets serves as input to vehicle routing models that reveal the benefits from collaboration by solving individual distribution problems of two retailers first, followed by the joint distribution problem under single decision maker assumption.

Findings
The benefits from collaboration could be more than 10 per cent in the distance travelled and 16 per cent in the time required to deliver the orders when two online grocery retailers collaborate in distribution activities.

Originality/value
The collaborative model developed for the online grocery market incentivises retailers to switch from current unsustainable logistics models to the proposed collaborative models.
Saving lives: design and implementation of lifeline emergency ad hoc network
Authors: Cheong Se-Hang , Si Yain-Whar , U. Leong-Hou 
Published: September 2018

Purpose
This paper aims to propose a system for automatically forming ad hoc networks using mobile phones and battery-powered wireless routers for emergency situations. The system also provides functions to send emergency messages and identify the location of victims based on the network topology information.

Design/methodology/approach
Optimized link state routing protocol is used to instantly form an ad hoc emergency network based on WiFi signals from mobile phones of the victims, backup battery-powered wireless routers preinstalled in buildings and mobile devices deployed by search and rescue teams. The proposed system is also designed to recover from partial crash of network and nodes lost.

Findings
Experimental results demonstrate the effectiveness of the proposed system in terms of battery life, transmission distance and noises.

Originality/value
A novel message routing schedule is proposed for conserving battery life. A novel function to estimate the location of a mobile device which sent an emergency message is proposed in this paper.
A jack-of-all-trades or a master of none: the performance effects of balancing exploration and exploitation within vs across alliance portfolio domains
Authors: Penney Christopher R. , Combs James G. , Gaffney Nolan , Sexton Jennifer C. 
Published: September 2018

PurposeTheory predicts that balancing exploratory and exploitative learning (i.e., ambidexterity) across alliance portfolio domains (e.g. value chain function, governance modes) increases firm performance, whereas balance within domains decreases performance. Prior empirical work, however, only assessed balance/imbalance within and across two domains. The purpose of this study is to determine if theory generalizes beyond specific domain combinations. The authors investigated across multiple domains to determine whether alliance portfolios should be imbalanced toward exploration or exploitation within domains or balanced across domains. The authors also extended prior research by exploring whether the direction of imbalance matters. Current theory only advises managers to accept imbalance without helping with the choice between exploration and exploitation.Design/methodology/approachHypotheses are tested using fixed-effects generalized least squares (GLS) regression analysis of a large 13-year panel sample of Fortune 500 firms from 1996 to 2008.FindingsWith respect to the balance between exploration and exploitation within each of the five domains investigated, imbalanced alliance portfolios had higher firm performance. No evidence was found that balance across domains relates to performance. Instead, for four of the five domains, imbalance toward exploration related positively to firm performance.Originality/valueAn alliance portfolio that allows for exploration in some domains and exploitation in other domains appears more difficult to implement than prior theory suggests. Firms benefit mostly from using the alliance portfolio for exploratory learning.
Cost efficiency analysis of scheduled commercial banks: empirical evidence from India
Authors: Bhatia Aparna , Mahendru Megha 
Published: September 2018

Purpose
The purpose of this paper is to analyze and evaluate cost efficiency (CE) scores of Indian Scheduled Commercial Banks (SCBs) in India over a period of 22 years, i.e. 1991–1992 to 2012–2013.

Design/methodology/approach
Data envelopment analysis (DEA) – a non-parametric approach is used to calculate efficiency scores of banks. Further the efficiency scores are decomposed into technical and allocative efficiency. The differences in the efficiency scores across ownership as well as across reformatory and post-reformatory era are examined by applying Panel Tobit Regression.

Findings
The paper also identifies the reason for cost inefficiency among Indian banks. In addition, the nature of their return to scale of all SCBs has also been evaluated. The results of the paper depict that Indian SCBs have never achieved full CE score of 1 in any of the years of study. The dominant reason identified behind cost inefficiency is allocative inefficiency. Surprisingly, the results also highlight that SCBs exhibit higher CE scores in reformatory era as compared to the post-reformatory era.

Originality/value
With specific reference to India, even lesser literature is found on CE. Indian banking sector has witnessed many changes on account of liberalization, privatization and globalization (LPG). Before banks adapted to the new environment, the global financial crisis acted as a fuel to fire affecting the performance of banks. Thus, a reassessment over a longer period would help to know a wholistic view of the issue of cost inefficiency, which has always been a troubling factor for Indian banks.
Formalizing company KM portrait: pilot study with evidence from Russia
Authors: Gavrilova Tatiana , Alsufyev Artem , Pleshkova Anastasiia 
Published: September 2018

Purpose
The purpose of this paper is to develop the model of knowledge management influence on company performance for further empirical testing of the links between knowledge management practices and processes and organizational performance.

Design/methodology/approach
This study establishes a model for comprehensive analysis of knowledge management’s influence on performance and describes the preliminary results gained from the experience of 120 Russian companies. For further testing structural equation modelling and the partial least squares methods are proposed.

Findings
The results of the literature review justify the importance of the study conducting this study in the field of knowledge management and its connection to organizational performance in the developing market of Russia. A theoretical model for future empirical testing is provided and methods suggested for further data analysis and interpretation. The preliminary conclusions are discussed.

Research limitations/implications
The focus on Russian firms limits the generalizability of the results. The non-response bias is also taken into account for further study.

Practical implications
This pilot study outlines the importance of knowledge management practices and processes for firm performance. The preliminary results will be interesting both for researchers and practitioners in the countries with the developing economies. The final results will provide new insights in understanding and formalizing the portrait of a typical Russian company with regards to knowledge management policies.

Originality/value
Few studies have been published on the knowledge management process within the Russian context. This study is expected to encourage future studies in this field. The present paper fills an important gap in the extant literature by conceptualizing the model for knowledge management performance analysis and proposes empirical testing of the relationship between knowledge management and firm performance in the context of a developing country that will be presented later as the direction for future study. This study is one of the first ever to study these relationships within the Russian context.
A look at corporate control: the case of Hertz Global Holdings
Authors: Jones Travis L. , Allen Marcus T. 
Published: September 2018

Purpose
The purpose of this paper is to focus on issues of corporate control around the announcement of the decision of Hertz Global Holdings to relocate its corporate headquarters from New Jersey to Florida in 2013. The relocation decision and accounting irregularities discovered after the announcement raised interest from activist investors. The firm responded by enacting a “poison pill,” but control was eventually wrestled away and the CEO was replaced. Examining these events gives students insights into corporate control issues facing a major US corporation.

Design/methodology/approach
This case study presents a history of the firm from its founding in 1918 through 2017, with an emphasis on key events from 2012 through 2017. These events include acquisition of a competing firm (Dollar Thrifty), relocation of corporate headquarters, accounting irregularities, restatement of financials, activist investor responses, issuance of a “poison pill,” and turnover in the CEO position.

Findings
The case is intentionally written to “tell the story” of events that relate to issues involving control of the company around the decision to relocate its corporate headquarters. The case highlights potential agency problems between management and shareholders and the market’s response to those problems.

Originality/value
No prior case study considers the topic of corporate control from the perspective of Hertz Global Holdings. This case study can be used by instructors in graduate and undergraduate courses to examine corporate control issues from a “real world” perspective.
The role of customer engagement in the involvement-loyalty link
Authors: Parihar Prateeksha , Dawra Jagrook , Sahay Vinita 
Published: September 2018

Purpose
The purpose of this paper is to investigate the relationship between the different dimensions of involvement and customer engagement (CE) and analyze the influence of CE on loyalty in an online retail context. The study also tests the mediation of CE between the facets of involvement and loyalty.

Design/methodology/approach
The study employed a survey for data collection from online retail website users and analyzed the data with partial least squares – structural equation modeling.

Findings
The results reveal that the dimensions of involvement drive engagement differently. The risk importance and risk probability do not influence CE whereas the sign, interest, and pleasure are positively associated with CE. Furthermore, CE mediates the link between sign, interest, and pleasure dimensions of involvement and loyalty.

Practical implications
This study provides insights for the managers that the perception of value from a brand starts at its product category level and values like sign, interest, and pleasure can be provided to the customers by not only brand consumption but also by engaging them with the brand.

Originality/value
This is among the first studies to have empirically tested the effect of dimensions of involvement on CE and explain the role of engagement as a means for the customers to achieve expected values. It also contributes to the extant CE literature by testing its mediating role between involvement dimensions and loyalty, thus augmenting the studies, which have explored the antecedents and consequences of CE.
Natural Preservatives for Extending the Shelf‐Life of Seafood: A Revisit
Authors: Olatunde Oladipupo Odunayo , Benjakul Soottawat 
Published: September 2018

AbstractConsumer demand for minimally processed seafood that retains its sensory and nutritional properties after handling and storage is increasing. Nevertheless, quality loss in seafood occurs immediately after death, during processing and storage, and is associated with enzymatic, microbiological, and chemical reactions. To maintain the quality, several synthetic additives (preservatives) are promising for preventing the changes in texture and color, development of unpleasant flavor and rancid odor, and loss of nutrients of seafood during storage at low temperature. However, the use of these preservatives has been linked to potential health hazards. In this regard, natural preservatives with excellent antioxidant and antimicrobial properties have been extensively searched and implemented as safe alternatives in seafood processing, with the sole purpose of extending shelf‐life. Natural preservatives commonly used include plants extracts, chitosan and chitooligosaccharide, bacteriocins, bioactive peptides, and essential oils, among others. This review provides updated information about the production, mode of action, applications, and limitations of these natural preservatives in seafood preservation.
Using Ethylcellulose to Structure Oil Droplets in Ice Cream Made with High Oleic Sunflower Oil
Authors: Munk Merete B. , Munk Daniel M.E. , Gustavsson Frida , Risbo Jens 
Published: September 2018

AbstractIn order to mimic physical characteristics of solid fat, ethylcellulose (EC) was used as an oleogelator in ice creams made with high oleic sunflower oil (HOSO). The aim was to improve structure of ice cream made with fully liquid vegetable oil by inhibiting droplet coalescence and to enable a colloidal fat network by making the oil droplets solid‐like. Two different methods for incorporating EC into emulsions were developed, both designed to involve high pressure homogenization of ice cream mixes as in traditional ice cream production. Ice creams based on 10% HOSO and 1% EC (cP10 or cP20) were successfully made. Two types of emulsifiers in the ice cream formulations were tested: unsaturated monoglyceride (GMU) or saturated mono‐diglyceride. GMU enhanced fat destabilization of ice cream resulting in coalescence of unstructured HOSO droplets. Presence of EC in HOSO based ice cream inhibited coalescence of oil droplets and the structure of the lipid phase resembled the small, evenly distributed fat globules in the reference ice cream made with saturated coconut fat. The resisting effect toward coalescence increased with higher molecular weight of EC, accordingly oil droplets made with EC cP20 were smaller compared to oil droplets containing EC cP10. EC did not increase the amount of air that was incorporated in ice creams based on HOSO, irrespective of the type of emulsifier. In general the overrun in HOSO‐based ice creams (with and without EC) was considerably lower compared to ice cream made with coconut fat.Practical ApplicationInterest for product development of ice cream based on unsaturated liquid oil is increasing. To compensate for the lacking fat crystals that provide structure and stability in traditional ice cream, the liquid oil is transformed into solid‐like material by ethylcellulose (EC). The process of ice cream includes high pressure homogenization, and in order to adapt to this process step, two new methods of incorporation of EC into the oil of ice cream mixes were developed.
Aplysin Protects Against Alcohol‐Induced Liver Injury Via Alleviating Oxidative Damage and Modulating Endogenous Apoptosis‐Related Genes Expression in Rats
Authors: Ge Na , Liang Hui , Zhao Yuan‐yuan , Liu Ying , Gong An‐jing , Zhang Wen‐long 
Published: September 2018

AbstractWe investigated the protective effects and possible mechanisms of Aplysin against alcohol‐induced liver injury. Rats were given daily either alcohol only (alcohol model group; 8 to 12 mL/kg body weight), one of three doses of Aplysin (50, 100, or 150 mg/kg Aplysin) plus alcohol, or volume‐matched saline. After 6 weeks, the effects of Aplysin were assessed in terms of changes in histology, biochemical indices, and DNA oxidative damage. Potential mechanisms were analyzed through measurements of lipid peroxidation, antioxidant defense systems, expression of cytochrome P450 2E1, and expression of apoptosis‐related genes. We found that Aplysin significantly protected the liver against alcohol‐induced oxidative injury, evidenced by improved hepatic histological structure, inhibited alcohol‐induced elevation of serum biochemical indices, attenuated extents of hepatocellular DNA damage. At a mechanistic level, Aplysin alleviated alcohol‐induced oxidative stress as illustrated by the revivification of erythrocyte membrane fluidity, the attenuation of glutathione depletion, the restoration of antioxidase activities, and reduced malondialdehyde overproduction. Furthermore, the mRNA levels of Bax, cytochrome c, and cytochrome P450 2E1 were significantly down‐regulated, whereas those of Bcl‐2 and caspase‐9 and caspase‐3 were markedly up‐regulated. These findings suggest that Aplysin provides significant protection against alcohol‐induced liver injury, possibly through alleviating oxidative damage and modulating endogenous apoptosis‐related genes expression.Practical ApplicationMany natural components derived from alga have been used in the food, cosmetics, and biomedicine industries. Aplysin, a marine bromosesquiterpene, was extracted from the red alga Laurencia tristicha, which could effectively protect against alcohol‐induced liver injury, might be a potential natural sources for preventing alcoholic liver damage.
Cardiovascular, cancer and mortality events after bariatric surgery in people with and without pre‐existing diabetes: A nationwide study
Authors: Dhalwani Nafeesa N. , Zaccardi Francesco , Waheed Hina , Mytton Jemma , Papamargaritis Dimitris , Webb David R. , Evison Felicity , Lilford Richard , Davies Melanie J. , Khunti Kamlesh 
Published: September 2018

AbstractBackgroundBariatric surgery reduces cardiovascular events and mortality risk in obese individuals. However, it is unclear whether diabetes modifies this effect. This study examined mortality, cardiovascular, and cancer risk following bariatric surgery in adults with and without pre‐existing diabetes.MethodsUsing mortality‐linked Hospital Episodes Statistics (2006‐14) from England, the risk of death, myocardial infarction, stroke, unstable angina, heart failure, and cancer following bariatric surgery was examined; the risk of death in people undergoing surgery was also compared with mortality rates of the general population.ResultsOf the 35 887 people undergoing bariatric surgery, 9175 (25.6%) had pre‐existing diabetes. During a mean follow‐up of 5.3 years, 801 people died, of whom 293 (36.6%) had pre‐existing diabetes. The risk of all‐cause mortality was 26% higher in people with than without diabetes (adjusted hazard ratio [aHR] 1.26, 95% confidence interval [CI] 1.08‐1.46), whereas the risk of cancer was 21% higher (aHR 1.21; 95% CI 1.14‐1.77). The risk of cardiovascular events was higher for patients with than without diabetes (aHRs [95% CIs] 2.08 [1.42‐3.05], 1.80 [1.29‐2.52], 1.61 [1.18‐2.19], and 1.42 [1.14‐1.77] for myocardial infarction, unstable angina, stroke, and heart failure, respectively). Compared with the general population, the age‐standardized mortality rate ratio was 1.70 (1.52‐1.91) and 1.35 (1.23‐1.48) in people with and without pre‐existing diabetes, respectively.ConclusionsFor patients with pre‐existing diabetes, the risk of death, cardiovascular events, and cancer after bariatric surgery was higher than for those without diabetes, whose mortality risk after surgery remains 35% higher than that of the general population.