scholarly journals Optimization of medical waste routing problem: The case of TRB1 region in Turkey

2019 ◽  
Vol 9 (2) ◽  
pp. 197-207
Author(s):  
Suleyman Mete ◽  
Faruk Serin
Keyword(s):  
Environmental Sustainability ◽  
Fundamental Problem ◽  
Medical Waste ◽  
Future Research ◽  
Risk Of Infection ◽  
Routing Problem ◽  
Solution Approach ◽  
Potential Risks ◽  
Health Institutions

A fundamental problem concerning medical waste disposal is the evaluation of the real and potential risks arising from waste with the focus on the risk of infection. Therefore, the optimization of medical waste routing from collection to disposal center can minimize the risk of infection. The routing of medical waste considers significant to determine potential routes and select the route with minimum distance. The management of the medical waste is important decision for environmental sustainability and includes the collection, transportation and disposal of these materials. In this paper, a geographic information system (GIS) solution approach is proposed to determine the best location of disposal center. Proposed approach is applied to medical waste transportation between 167 health institutions (collection centers) and predetermined 5 disposal centers through TRB1 region in Turkey, which consist of Malatya, Elaz??, Bingöl and Tunceli provinces. The results of case study are examined and suggestions for future research are provided.

Aligning corporate and business strategy: managing the balance

2019 ◽  
Vol 40 (4) ◽  
pp. 44-52 ◽  
Author(s):  
Pontus Wadström
Keyword(s):  
Business Strategy ◽  
Corporate Strategy ◽  
Two Dimensions ◽  
Future Research ◽  
Content Type ◽  
Different Types ◽  
Field Notes ◽  
Potential Risks ◽  
Practical Implications

Purpose This study aims to expand the knowledge on strategy and alignment by exploring how executives and strategists can manage alignment between corporate and business strategy to leverage synergies, from a corporate strategy perspective, without limiting local responsiveness, from a business strategy perspective. Design/methodology/approach The study is characterized by privileged access and richness of data. A case study design was used to explore the results. Data include interviews, observations in workshops, material produced in workshops and personal field notes. Findings The study provides insights about how alignment between corporate and business strategy can be managed to balance requirements on both corporate and business strategy. To do so alignment needs be understood and managed based on its contribution to the competitiveness of the firm. In addition, alignment encompasses two dimensions: direction of alignment (which can be vertical and horizontal) and relation of alignment (which can be numerical and non-numerical). This leads to four different types of alignment. Research limitations/implications Explorative case studies yield results less generalizable. Future research is thus encouraged to confirm or contradict the results of this study. Practical implications When formulating strategy, executives and strategists need to consider what type of alignment is appropriate for what parts and elements of the strategies (e.g. goals and activities) to gain competitive advantage. By using different types of alignment, it is possible to balance the need for both corporate synergies and business responsiveness. Originality/value This study fulfils an identified need to study what alignment between strategies on different organizational levels encompasses and the potential risks of alignment.

scholarly journals Routing Optimisation of Urban Medical Waste Recycling Network considering Differentiated Collection Strategy and Time Windows

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Jiajing Gao ◽  
Haolin Li ◽  
Jingwen Wu ◽  
Junyan Lyu ◽  
Zheyi Tan ◽  
...  
Keyword(s):  
Large Scale ◽  
Programming Model ◽  
Time Windows ◽  
Computation Time ◽  
Waste Recycling ◽  
Medical Waste ◽  
Third Party ◽  
Mixed Integer ◽  
Routing Problem ◽  
Solution Approach

The increasing gap between medical waste production and disposal stresses the urgency of further development of urban medical waste recycling. This paper investigates an integrated optimisation problem in urban medical waste recycling network. It combines the vehicle routing problem of medical facilities with different requirements and the collection problem of clinics’ medical waste to the affiliated hospital. To solve this problem, a compact mixed-integer linear programming model is proposed, which takes account of the differentiated collection strategy and time windows. Since the medical waste recycling operates according to a two-day pattern, the periodic collection plan is also embedded in the model. Moreover, we develop a particle swarm optimisation (PSO) solution approach for problem-solving. Numerical experiments are also conducted to access the solution efficiency of the proposed algorithm, which can obtain a good solution in solving large-scale problem instances within a reasonable computation time. Based on the results, some managerial implications can be recommended for the third-party recycling company.

scholarly journals A New Optimization Technique for the Location and Routing Management in Agricultural Logistics

2020 ◽  
Vol 6 (1) ◽  
pp. 11
Author(s):  
Chalermchat Theeraviriya ◽  
Rapeepan Pitakaso ◽  
Kanchana Sethanan ◽  
Sasitorn Kaewman ◽  
Monika Kosacka-Olejnik
Keyword(s):  
Processing Time ◽  
Agricultural Sector ◽  
Cost Minimization ◽  
Optimization Technique ◽  
Fuel Cost ◽  
Problem Size ◽  
Routing Problem ◽  
Solution Approach ◽  
Fuel Cost Minimization

This paper aims to solve the location and routing problem (LRP) in the agricultural sector with the objective function of fuel cost minimization. Many farmers may have problems when transporting and selling products because of high costs and unfair prices. The proper location of standardized procurement centers and suitable routes will relieve farmers’ problems. This paper includes a realistic constraint that a farm can be visited to collect product more than once. A mathematical model was formulated to be solved by Lingo software, but when the problem size was larger, Lingo was unable to solve the problem within a reasonable processing time. The variable neighborhood strategy adaptive search (VaNSAS) is proposed to solve this LRP. The main contributions of this paper are a real case study problem and the first introduction of VaNSAS. Furthermore, the different combinations of the solution approach are proposed to prove which combination is the best algorithm. The computational results show that VaNSAS can find the solutions for all problem sizes in much less processing time compared to Lingo. In medium and large-sized instances, the VaNSAS can reduce processing times by 99.91% and 99.86%, respectively, from solutions obtained by Lingo. Finally, the proposed VaNSAS has been deployed in a case study problem to decide the best locations and transportation routes with the lowest fuel cost.

scholarly journals Machine Learning-Based Parameter Tuned Genetic Algorithm for Energy Minimizing Vehicle Routing Problem

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
P. L. N. U. Cooray ◽  
Thashika D. Rupasinghe
Keyword(s):  
Machine Learning ◽  
Genetic Algorithm ◽  
Vehicle Routing ◽  
Vehicle Routing Problem ◽  
Machine Learning Techniques ◽  
Future Research ◽  
Business Practices ◽  
Routing Problem ◽  
Solution Approach ◽  
Sustainable Logistics

During the last decade, tremendous focus has been given to sustainable logistics practices to overcome environmental concerns of business practices. Since transportation is a prominent area of logistics, a new area of literature known as Green Transportation and Green Vehicle Routing has emerged. Vehicle Routing Problem (VRP) has been a very active area of the literature with contribution from many researchers over the last three decades. With the computational constraints of solving VRP which is NP-hard, metaheuristics have been applied successfully to solve VRPs in the recent past. This is a threefold study. First, it critically reviews the current literature on EMVRP and the use of metaheuristics as a solution approach. Second, the study implements a genetic algorithm (GA) to solve the EMVRP formulation using the benchmark instances listed on the repository of CVRPLib. Finally, the GA developed in Phase 2 was enhanced through machine learning techniques to tune its parameters. The study reveals that, by identifying the underlying characteristics of data, a particular GA can be tuned significantly to outperform any generic GA with competitive computational times. The scrutiny identifies several knowledge gaps where new methodologies can be developed to solve the EMVRPs and develops propositions for future research.

scholarly journals Mexico’s Legal Framework Regarding Wastewater Management: A Case Study of Baja California Sur

2021 ◽  
Vol 13 (2) ◽  
pp. 115
Author(s):  
Ana Teresa Valdivia Alvarado ◽  
Alba E. Gámez ◽  
Luis Felipe Beltrán Morales ◽  
Alfredo Ortega-Rubio
Keyword(s):  
Environmental Sustainability ◽  
Baja California ◽  
Legal Framework ◽  
Future Research ◽  
Wastewater Management ◽  
Baja California Sur ◽  
Alternative Source ◽  
Systematic Analysis ◽  
Northwestern Mexico

Wastewater is one of the principal causes of coastal ecosystem pollution and poses a threat to food security, drinking water access, public health, and ecosystem survival. However, wastewater can also be a reliable alternative source of water, provided specific changes are made. Mexico’s extensive and com¬plex legal framework involving various governmental agencies and overlapping jurisdictions makes it difficult to ascertain the specific responsibilities of various actors and enforce accountability in the area of wastewater management. The aim of this paper is to analyze the relevant law in order to determine whether it is the legislation itself which is generating adverse environmental impacts, or whether these impacts are the result of the wastewater management system as implemented. In this study, we analyze the legal framework applicable at each of the three levels of government in order to clarify the connections between these governmental entities from a perspective that has not been previously developed, which will be a useful point of departure for future research. To this end, the state of Baja California Sur (in northwestern Mexico) is presented as a case study insofar as it is representative of vulnerable coastal regions facing water scarcity. The methodology and systematic analysis of wastewater regulations employed in this paper facilitate both an evaluation of the efficacy of the current legal framework surrounding wastewater management, as well as the identification of changes needed in order to achieve environmental sustainability and protect water resources for present and future generations.

ASSESSMENT OF THE POTENTIAL RISKS OF AIRBONE MICROBIAL CONTAMINATION IN SOLID RECOVERED FUEL PLANTS: A CASE STUDY IN ISTANBUL

2017 ◽  
Vol 16 (7) ◽  
pp. 1415-1421
Author(s):  
Yasemin Tabak ◽  
Senol Yildiz ◽  
Volkan Enc ◽  
Mustafa Kara ◽  
Emine Acet
Keyword(s):  
Microbial Contamination ◽  
Potential Risks

An Ayurvedic Visual Rehabilitation In Lebers Congenital Amaurosis - Prospective Case Study

2018 ◽  
Vol 3 (4) ◽  
Author(s):  
Dr. Vidhyasri M ◽  
Dr. S. M. Pasha
Keyword(s):  
Marked Improvement ◽  
Clinical Case ◽  
Treatment Plan ◽  
Visual Disability ◽  
Visual Rehabilitation ◽  
Potential Risks ◽  
The Subject ◽  
Slow Frequency

Introduction: This is the case report of child who was diagnosed with LCA reported with complaints of large-amplitude, slow-frequency, roving nystagmus, frequent tendency to press on his eyes, enopthalmos, with completely normal ophthalmoscopic examination with normal appearing optic nerve and retina and has a non recordable ERG; considering this condition under the lines of Vataja Nanatmaja Vyadhi treatment was structured to render effective visual rehabilitation which showed marked results. Methods: 4 years old male child who was diagnosed with lebers congenital amaurosis was brought by his parents to Eye OPD, GAMC, Bengaluru. The presentation of this case includes bibliographic review of the subject, presentation of a clinical case and description of the importance of Ayurvedic prespective of handling of these patients. Results: The child showed improvement in fixing for light and also nystagmus showed marked improvement and there were considerable behavioural changes observed. Discussion: It is important to deepen the environment of the disease to know the possible implications in Ayurvedic management, recognize the magnitude of visual disability that our patient presents for the establishment of the treatment plan and provide an integral care of excellence in an interdisciplinary way in favor of visual rehabilitation of our patients and also help to restore quality of life with no potential risks of side effects.

Supplier Development at LG Electronics

2020 ◽  
Author(s):  
Hyojin Kim ◽  
Daesik Hur ◽  
Tobias Schoenherr
Keyword(s):  
Management Practice ◽  
Digital Technologies ◽  
Supply Management ◽  
Future Research ◽  
Supplier Development ◽  
Environmentally Conscious ◽  
Competitive Capabilities ◽  
The Stability ◽  
Buyer Firm

Supplier development has been a critical supply management practice since the 1990s. In many instances, it has even become imperative for buyer firms to support and prepare their supply bases for uncertain economic and market environments, socially and environmentally conscious customers, advances in digital technologies, and increasing competition. Yet, research that approaches supplier development with the objective to advance all these dimensions in an integrated fashion is scarce. This study fills this void by exploring how a buyer firm may address these emerging challenges in its supply base. Specifically, an in-depth case study of LG Electronics explores how the firm designs and operates multidimensional supplier development activities to foster the stability and sustainability of its supply base while enhancing its core suppliers’ competitive capabilities. This chapter illustrates how supplier development can be taken to the next level, presents implications for managerial practice, and outlines promising future research avenues.

scholarly journals Improving the Environmental Sustainability of Flash Geothermal Power Plants—A Case Study

2015 ◽  
Vol 7 (11) ◽  
pp. 15262-15283 ◽  
Author(s):  
Lorenzo Bruscoli ◽  
Daniele Fiaschi ◽  
Giampaolo Manfrida ◽  
Duccio Tempesti
Keyword(s):  
Environmental Sustainability ◽  
Power Plants ◽  
Geothermal Power
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