scholarly journals The current context of Lean and Six Sigma Logistics applications in literature: A Systematic Review

Author(s):  
Edra Resende de Carvalho ◽  
Ana Elaje Azevedo Simões da Mota ◽  
Gabriela Maués de Souza Martins ◽  
Leonardo Dos Santos Lourenço Bastos ◽  
André Cristiano Silva Melo

Originated in the Toyota Production System, the concept of lean production has become widely disseminated and broadly applied in the industry. When considering lean and six sigma principles in logistics, companies have obtained advantages in terms of cost and quality, which encouraged scientific researches for improvements in the topic. To study the current state of the art on Lean Logistics (LL) and Six Sigma Logistics (SSL), in the national and international level, a systematic review of lean and six sigma logistics were performed, aiming to evaluate theoretical and practical applications, in order to classify the current literature and propose studies to address research opportunities. For this purpose, a review protocol was created to guide and structure the review. As results, it was identified that Transportation has been the main logistic operational drive component in which LL has being applied. The most frequent type of waste considered was Motion and most of the studies were practical applications. Finally, this study found considerable research opportunities for future studies. 

Author(s):  
Manal A. M. Mahmoud ◽  
Hosnia Abdel-Mohsein ◽  
Usama Mahmoud ◽  
Zhaoqing Lyu ◽  
Sani Rachman Soleman ◽  
...  

Many studies have shown that human breast milk is contaminated with various chemicals. In the proposed systematic review, the aim is to identify and summarize the available literature regarding chemical exposure via breastfeeding or the feeding of artificial formula. MEDLINE (PubMed) will be the primary source in this literature search. Primary studies that analyzed one or more chemicals of interest in breast milk or artificial milk and that reported information on concentrations will be eligible for this review. Conference abstracts will not be included in the review unless access to the data is easy. First, the titles and abstracts of identified articles will be screened by two or more researchers. Then, a full-text review will be conducted to extract data from the included articles and code them for classification. The results of the search and classification will be summarized narratively and bibliometrically. The aim of the review is to analyze trends in publications according to year and region from the viewpoint of target chemicals, location, range of concentrations, and health outcomes.


2018 ◽  
Vol 38 (1) ◽  
pp. 149-182 ◽  
Author(s):  
Vijaya Sunder M. ◽  
L.S. Ganesh ◽  
Rahul R. Marathe

Purpose The purpose of this paper is to review the existing literature on Lean Six Sigma (LSS) for services, construct a morphological analysis (MA) framework and identify research gaps to point to future research possibilities and priorities. Design/methodology/approach The MA framework is based on literature review of 175 papers published from 2003 to 2015, across 67 journals recognised by Scopus or ABS Academic Journal Quality Guide 2015. A three-phased methodology is used by the authors, with Phase1 featuring a five-stage systematic review protocol to identify relevant journal papers for review; Phase2 presenting a framework for classifying the reviewed papers in terms of their fundamental, methodological, chronological and sector-wise orientations; and Phase3 constructing an MA framework on the classified papers and identifying the research gaps. Findings The MA framework constructed based on six dimensions, namely, organizational context of applications, desired outcomes, implementation systems, LSS tools and techniques, integration with other management philosophies and evaluation methods, involving 40 focused themes, has revealed 355 distinct research gaps as opportunities for future research. Practical implications This paper confirms the existence of substantial scope and points to specific topics for further research in the area of LSS for services. The findings demonstrate the gaps in academic research on the subject. In addition, the study also helps organisational leaders and practitioners to look at LSS from a holistic perspective in the services context. Originality/value The MA framework of the existing literature on LSS for services presents a unique, systematic effort to identify research opportunities. In addition, a five-stage systematic review protocol is proposed in this paper. This could be valuable to researchers and practitioners in enabling them to systematically review the literature on research subjects of interest to them.


Neurology ◽  
2021 ◽  
pp. 10.1212/WNL.0000000000011597
Author(s):  
Annelieke R Müller ◽  
Marion MMG Brands ◽  
Peter M van de Ven ◽  
Kit CB Roes ◽  
Martina C Cornel ◽  
...  

Objective:To improve the use of N-of-1 studies in rare genetic neurodevelopmental disorders, we systematically reviewed the literature and formulated recommendations for future studies.Methods:The systematic review protocol was registered in the PROSPERO International Prospective Register of Systematic Reviews (CRD42020154720). EMBASE and MEDLINE were searched for relevant studies. Information was recorded on types of interventions, outcome measures, validity, strengths and limitations using standard reporting guidelines and critical appraisal tools. Qualitative and descriptive analyses were performed.Results:Twelve studies met N-of-1 inclusion criteria, including both single trials and series. Interventions were mainly directed to neuropsychiatric manifestations. Main strengths were the use of personalized and clinically relevant outcomes in most studies. Generalizability was compromised due to limited use of validated and generalizable outcome measures.Conclusion:N-of-1 studies are sporadically reported in rare genetic neurodevelopmental disorders. Properly executed N-of-1 studies may provide a powerful alternative to larger randomized controlled trials in rare disorders and a much needed bridge between practice and science. We provide recommendations for future N-of-1 studies in rare genetic neurodevelopmental disorders, ultimately optimizing evidence-based and personalized care.


2020 ◽  
Author(s):  
Lauren Johansen ◽  
Paul Liknaitzky ◽  
Maja Nedeljkovic ◽  
Lisa Mastin-Purcell ◽  
Greg Murray

Abstract BackgroundThere is currently renewed interest in the use of psychedelic therapy in the treatment of psychiatric disorders, including depression. The proposed systematic review will aim to identify, evaluate and summarise the psychological processes of change underlying psychedelic therapy for depression in the current literature and consider the implications these processes may have on the psychotherapy component of treatment. MethodsScopus, PsycINFO, PubMed and Web of Science databases will be searched using relevant terms. Studies will be included if they discuss the use of a classic psychedelic to treat depression symptomology in an adult population and report or propose psychological processes responsible for depression symptom change. Two authors will independently screen articles, complete quality assessment tools and conduct data extraction. Empirical and non-empirical research will be extracted and synthesised separately. A narrative synthesis approach will be used to report psychological processes identified in the literature. DiscussionThis systematic review will be the first to collate available evidence on the psychological processes associated with psychedelic therapy for depression. The preliminary nature of this research field is expected to result in the review having several limitations, namely heterogeneity between studies and a lack of empirical research. We intend for this review to present the current state of the literature, identify gaps and generate candidate variables that warrant further investigation. Systematic Review RegistrationPROSPERO CRD42020197202


2020 ◽  
Author(s):  
Sean Carruthers ◽  
Gemma Brunetti ◽  
Susan Rossell

Schizophrenia spectrum disorders are chronic and debilitating mental illnesses characterised by both cognitive impairments and sleep deficits. In this systematic review protocol, we outline an approach to examine the available literature investigating the relationship between sleep and cognition in individuals with schizophrenia spectrum disorder.


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