Adopting basic quality tools and landscape analysis for applied limnology: an approach for freshwater reservoir management

Silva, Fábio Leandro da; Fushita, Ângela Terumi; Bianchini, Irineu

doi:10.1007/s40899-022-00655-8

Cited by 6 publications

(4 citation statements)

References 48 publications

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“…From a temporal series of ten years (2007-2017), as part of the environmental monitoring program carried out in the Barra Bonita hydropower reservoir, a high level of non-conformities for total phosphorus, dissolved oxygen, thermotolerant coliforms, and biochemical demand of oxygen was found [18]. This reservoir is located in the Tietê River, immediately downstream of our study area.…”

Section: Environmental Conditionsmentioning

confidence: 93%

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Excessive Eutrophication as a Chemical Barrier for Fish Fauna Dispersion: A Case Study in the Emblematic Tietê River (São Paulo, Brazil)

Urbanski,

Nogueira

2024

Water

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The Tietê River receives most of the effluents and diffuse wastes from the São Paulo metropolis (21.9 million inhabitants). The study aimed to assess the extent to which environmental changes affected the fish fauna. We compared, in rainy and dry seasons, three sites in Tietê and three in tributaries with much better water quality conditions. No physical barriers exist between the sites. Fish were sampled with gillnets (exposed overnight) and the assemblage’s ecological attributes calculated. Water depth, transparency, temperature, electrical conductivity, dissolved oxygen, turbidity, total dissolved solids, pH, redox potential, total phosphorus, total nitrogen, and chlorophyll were simultaneously determined. Low oxygen concentrations (near zero in the rainy period), and the opposite for nutrients and total solids, separated the predominantly hypereutrophic Tietê from the tributaries (PCA). Differences in the fish assemblages were also evidenced (nMDS), including a higher richness per sample in tributaries (11 to 14 spp.) compared to Tietê (3 to 4 spp.). Siluriformes with accessory breathing dominated in Tietê and the highly tolerant detritivorous Prochilodus lineatus (the main commercial fish) was the only species found in all sites. The species correlated positively with oxygen in the tributaries and with turbidity, redox potential, and nutrients in Tietê (DistLM) (rainy season). Recovery measures are urgently required.

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Section: Environmental Conditionsmentioning

confidence: 93%

“…The authors also highlighted the increased potential for toxicity associated with the recurrent cyanobacterial blooms. After that, during the last two decades, there has been no signal of consistent improvement in the river water quality; maybe the contrary [17,18].…”

Section: Introductionmentioning

confidence: 99%

Excessive Eutrophication as a Chemical Barrier for Fish Fauna Dispersion: A Case Study in the Emblematic Tietê River (São Paulo, Brazil)

Urbanski,

Nogueira

2024

Water

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“…Pareto Chart: It is a graphic that represents the occurrence of events and it is used to categorize and analyze operational performance, challenges, situations, and causes. The Pareto principle holds that 80% of defects are determined by 20% of causes [25,26].…”

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confidence: 99%

Setup Time Reduction of an Automotive Parts Assembly Line Using Lean Tools and Quality Tools

Oliveira,

Lima

2023

Eng

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The business world is becoming more competitive. Therefore, it is crucial to increase the flexibility of production by decreasing the time used in the processes of preparing the production lines for new items’ production, reducing changeover and setup times. This paper presents a case study where the main goal is to reduce the setup time of welding robots. Single Minute Exchange of Die (SMED) was implemented, using other tools such as the Spaghetti Diagram, ERCS Analysis (Eliminate, Rearrange, Combine, Simplify), Gemba Walk, Standardized Work, Flowcharts, and Pareto Diagram. The setup time decreased by 36% in the welding robots studied, decreasing the motions by 43% during the changeover process and reducing the time from the categories: “transportation”, “main”, “other”, and “waiting”. In addition to SMED implementation, this study offers an integrated study of several Lean tools and Quality tools to achieve the maximum reduction of changeover and setup times.

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“…The precision of these engineering tools selected for each of the stages of the project is confirmed by the authors Rau et al (2019), as well as Hernandez and Moreno (2021); who affirm that the aforementioned tools are commonly used in various engineering case studies. In addition, other authors such as da Silva et. al (2022) also used engineering tools to analyze and check the feasibility of projects with a similar scope.…”

Section: Validationmentioning

confidence: 99%

Project Management Model Applying Agile, Design Thinking and Lean Methodologies for the Improvement of Customer Service in an Insurance Brokerage SME

Proceedings of the International Conference on Industrial Engineering and Operations Management

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The following article is based on the approach of a project management model that aims to solve business problems from an innovative perspective, based on consumers' needs. This model is based on integrating Design Thinking, Agile and Lean methodologies. The case of a brokerage insurance Peruvian company was analyzed, which perceived various drawbacks around the customer service area. This article recognizes the most appropriate improvement for the case studied, by following the steps of the adapted management model; starting with the traditional stages of Design Thinking to make a precise diagnosis of the situation and with this information, improvement proposals that solve what has been identified are established. Subsequently, the most appropriate improvement is selected under objective criteria, and sprints that allow making good use of Agile are organized to develop the specific execution using a sequence of steps according to the PDCA cycle, a characteristic technique of Lean where the goal is to ensure a constant reevaluation of processes. After the results obtained from the simulation of the studied process, an increase in attention span of 88% was obtained, which allows us to calculate a significant economic benefit in the company that would represent 29.25% of the revenues achieved in 2021. In conclusion, it's possible to validate the proposed model, verifying its original properties of adaptability and replicability without limit of scenarios regarding the sector, area, or company size due to the great synergy existing between the three innovative methodologies unified for the development of the proposed model.

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Adopting basic quality tools and landscape analysis for applied limnology: an approach for freshwater reservoir management

Cited by 6 publications

References 48 publications

Excessive Eutrophication as a Chemical Barrier for Fish Fauna Dispersion: A Case Study in the Emblematic Tietê River (São Paulo, Brazil)

Excessive Eutrophication as a Chemical Barrier for Fish Fauna Dispersion: A Case Study in the Emblematic Tietê River (São Paulo, Brazil)

Setup Time Reduction of an Automotive Parts Assembly Line Using Lean Tools and Quality Tools

Project Management Model Applying Agile, Design Thinking and Lean Methodologies for the Improvement of Customer Service in an Insurance Brokerage SME

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