scholarly journals Localization in an Industrial Environment: A Case Study on the Difficulties for Positioning in a Harsh Environment

2015 ◽  
Vol 11 (8) ◽  
pp. 567976 ◽  
Author(s):  
Michael Hölzl ◽  
Roland Neumeier ◽  
Gerald Ostermayer
Keyword(s):  
Harsh Environment ◽  
Industrial Environment

Milling Curves Influence in Ring Rolling Processes

2014 ◽  
Vol 622-623 ◽  
pp. 956-963 ◽  
Author(s):  
Luca Giorleo ◽  
Elisabetta Ceretti ◽  
Claudio Giardini
Keyword(s):  
Numerical Approach ◽  
The Other ◽  
Ring Rolling ◽  
Roll Speed ◽  
Forming Process ◽  
Industrial Case Study ◽  
Industrial Environment ◽  
Ring Shape ◽  
Deformation Processes

Ring Rolling is a complex hot forming process used for the production of shaped rings, seamless and axis symmetrical workpieces. The main advantage of workpieces produced by ring rolling, compared to other technological processes, is given by the size and orientation of grains, especially on the worked surface which give to the final product excellent mechanical properties. In this process different rolls (Idle, Axial, Guide and Driver) are involved in generating the desired ring shape. Since each roll is characterized by a speed law that can be set independently by the speed law imposed to the other rolls, an optimization is more critical compared with other deformation processes. Usually, in industrial environment, a milling curve is introduced in order to correlate the Idle and Axial roll displacement, however it must be underlined that different milling curves lead to different loads and energy for ring realization. In this work an industrial case study was modeled by a numerical approach: different milling curves characterized by different Idle and Axial roll speed laws (linearly decreasing, constant, linearly increasing) were designed and simulated. The results were compared in order to identify the best milling curve that guarantees a good quality ring (higher diameter, lower fishtail) with lower loads and energy required for manufacturing.

scholarly journals Study of Biocrudes Obtained via Hydrothermal Liquefaction (HTL) of Wild Alga Consortium under Different Conditions

Processes ◽  
2021 ◽  
Vol 9 (9) ◽  
pp. 1494
Author(s):  
Caroline Barrère-Mangote ◽  
Anne Roubaud ◽  
Brice Bouyssiere ◽  
Julien Maillard ◽  
Jasmine Hertzog ◽  
...  
Keyword(s):  
Global Warming ◽  
Fossil Fuels ◽  
Culture Medium ◽  
Matter Content ◽  
Hydrothermal Liquefaction ◽  
Mineral Matter ◽  
Harsh Environment ◽  
Industrial Environment ◽  
Plant Emissions ◽  
Heavy Fractions

Microalga-based fuels are promising solutions for replacing fossil fuels. This feedstock presents several advantages such as fast growth in a harsh environment and an ability to trap gases emitted from industries, thus reducing global warming effects. An efficient way to convert harvested microalgae into biofuels is hydrothermal liquefaction (HTL), which yields an intermediate product called biocrude. In this study, the elemental and molecular compositions of 15 different HTL biocrudes were determined by means of different techniques. Wild algae were cultivated in an industrial environment with plant emissions as a carbon source in fresh or seawater. It was notably observed that the culture medium had an influence on the biochemical composition and mineral matter content of algae. Thus, seawater algae were characterized by larger amounts of carbohydrates and mineral matter than freshwater ones, which also affected the oil yields and the light and heavy fractions of biocrudes.

scholarly journals Benefits of Implementing Automated Costing in a Small Machine Shop: A Case Study

2013 ◽  
Vol 1 (2) ◽  
pp. 132-143
Author(s):  
Benito A Gonzalez ◽  
Alley C Butler
Keyword(s):  
Automated System ◽  
Cost Estimating ◽  
Machine Shop ◽  
Industrial Environment ◽  
Knowledge Based ◽  
Small Machine ◽  
Percentage Difference ◽  
Limiting Case ◽  
Improved Accuracy

Knowledge based cost estimating systems are available, but is there a lower limit to their applicability in an industrial environment?  This paper answers this question by examining a knowledge based cost estimating expert system application in a small machine shop.  Differences between the traditional experienced-based system currently employed and the automated system are studied.  Data is gathered to analyze time effectiveness, accuracy, and payback of the software.  Data from seventy part models is recorded to study the time experiment and data from fifty part models is used to study accuracy and consistency.The results indicate that the software is faster than traditional quoting systems; however, the payback point is high. Also, results show that the software has a smaller average time to manufacture percent difference between the automated system and the actual time to manufacture (TTM) compared to the percentage difference between the traditional TTM and actual TTM. Standard deviation for the automation is also less, implying better consistency.  As a result, the attractiveness of the automated system in the limiting case of a small machine shop rests with significantly improved accuracy and consistency rather than payback. 

scholarly journals The Extent of Achieving the Competitive Advantage of the Organizations -The Small Business Sector- The Natural Cosmetics Sector - In Light of the Factors of Porter's Model(Case Study of Al-Hashlamoun Cosmetics Factory – Palestine)

2021 ◽  
Vol 04 (02) ◽  
Author(s):  
Ehab Mohiuddin Hashlamou ◽  
Keyword(s):  
Developing Countries ◽  
Competitive Advantage ◽  
West Bank ◽  
The Internet ◽  
Main Question ◽  
Model Assessment ◽  
Total Quality ◽  
The West ◽  
Industrial Environment

The current study aims to identify the extent to which the competitive advantage - the natural cosmetics sector - was achieved in light of the factors of the Porter model, and on the Hashlamoun cosmetics factory in the West Bank between 2018 and 2019. Where the study was formulated through the main question: What is the extent of achieving the competitive advantage - the natural cosmetics sector - in light of the factors of the Porter model, and on the Hashlamoun cosmetics factory in the West Bank? This question is divided into a set of sub-questions. In order for the study to achieve its goals according to the scientific methodology, a qualitative exploration method for secondary sources and data has been used to uncover criticism and support for Porter models through relevant books and references. Work has also been done on the descriptive analytical approach in the study to analyze the sector and case study through several tools, including the questionnaire It was prepared appropriately based on the main factors of the Porter model for analyzing the sector's attractiveness and other external factors, in order to collect the required data on (8) cosmetic companies natural, conduct interviews and take notes in a case study of a factory Hashlamoun p. For cosmetics, the study used descriptive and inferential methods, through the statistical analysis program (EXCEL ). The study reached a number of results, the most important of which are: Based on the Porter factors to analyze the sector and build a competitive advantage, the researcher showed when applying the model that the natural cosmetics sector has an average attractiveness to invest in it, and that the Hashlamoun Cosmetics Company for the industrial environment in the sector has a medium appeal to continue in it, but after applying the forces and modern factors to the sector Natural cosmetics turned out to be of low attractiveness and also the Hashlamoun Company for Cosmetics for its industrial environment is of high attractiveness. The Porter model assessment of the five powers of sector analysis with the researcher’s assessment is weak and not sufficient, because it is unable to give information and expected challenges to the market and the sector adequately and inappropriate for the current sectors and different markets for several reasons: the inconsistency of the conditions and assumptions that are required to apply the model to the sectors and modern markets, the sector The model was applied to in Palestine and it is one of the developing countries, which means the model is unable to deal with the analysis and understanding of the sectors and markets of developing countries. The organization under study is from the small organizations sector and the Porter model is not appropriate for this sector because it has structures organization and clear and depend on the manpower, expertise and skills while the model is based on clear organizational and divided structures is the basic value of the equipment, machinery and external resources, and the presence of factors, modern forces weighed heavily on the markets and sectors and their ability to build a competitive advantage, did not mention the five Porter powers model. It became clear to the researcher that the company is using a differentiation strategy to build a competitive advantage for it, but there are better and more modern strategies that are more suitable for modern markets, and this strategy used has many flaws. After discussing the results, the study concluded with a set of recommendations, the most important of which are: Establishing a committee representing companies in the natural cosmetics sector and caring for them, companies that want to invest in or are present in the sector to counter the intensity of competition by using information technology methods and taking advantage of globalization and the Internet to market and promote their products, also that Al-Hashlamoun Cosmetics Company adopts the new thought of total quality management, Reduce damage, arrange production activities and processes to save time and effort, and communicate between management and workers to solve problems, access the market quickly and on demand on time, and a hybrid modern strategy that integrates cost leadership with differentiation, and The companies use to analyze the market recent modern models for all factors and variables, and if Porter models are used to be just a simple look or a starting point and use other tools, also amend the Porter strategies and models to become appropriate for the modern economy and the variables and taking into account modern forces from the Internet and globalization and free trade, and adding factors On its models to accommodate the economy in developing countries and focus on the role and impact of government on sectors.

Historical Data Analysis through Data Mining From an Outsourcing Perspective

2010 ◽  
Vol 1 (3) ◽  
pp. 42-65 ◽  
Author(s):  
Arjen Vleugel ◽  
Marco Spruit ◽  
Anton van Daal
Keyword(s):  
Data Mining ◽  
Data Analysis ◽  
Historical Data ◽  
Data Retrieval ◽  
Process Models ◽  
Industrial Environment ◽  
Historical Data Analysis ◽  
Key Aspects ◽  
Three Phases

The process of historical data analysis through data mining has proven valuable for the industrial environment. There are many models available that describe the in-house process of data mining. However, many companies either do not have in-house skills or do not wish to invest in performing in-house data mining. This paper investigates the applicability of two well-established data mining process models in an outsourcing context. The authors observe that both models cannot properly accommodate several key aspects in this context; therefore, this paper proposes the Three-phases method, which consists of data retrieval, data mining and results implementation within an organization. Each element is presented as a visual method fragment, and the model is validated through expert interviews and an extensive case study at a large Dutch staffing company. Both validation techniques substantiate the authors’ claim that the Three-phases model accurately describes the data mining process from an outsourcing perspective.

Steel Lazy Wave Riser Configuration for Turret Moored FPSO With Disconnectable Turret in Deepwater

2015 ◽  
Author(s):  
Daniel Karunakaran ◽  
Sankar Subramanian ◽  
Rolf Baarholm
Keyword(s):  
Deep Water ◽  
Cost Effective ◽  
Attractive Alternative ◽  
Harsh Environment ◽  
Detailed Case ◽  
Effective Manner ◽  
Water Developments ◽  
Pros And Cons ◽  
Steel Catenary Risers

Recently turret-Moored FPSOs have been used in many deep water developments worldwide, with consideration of disconnectable turrets for harsh environment applications. This trend makes the interactions between FPSO and risers system more important. Further, Steel Lazy Wave Risers (SLWR), which is a compliant variant of the mostly commonly used Steel Catenary Risers (SCR), is becoming an attractive riser option. The paper provides a review of the various riser systems that can be considered for turret-moored FPSOs, and specific emphasis on Steel Lazy Wave Risers. A detailed case study of Steel Lazy Wave Risers for a typical turret moored FPSO with disconnectable turret is presented. This system is described in terms of design and functionalities, the fabrication and installation methods are presented. The case study shows clearly that SLWR are an attractive alternative to be used for FPSO with disconnectable turret and is very efficient to fabricate and install in a very cost effective manner. Pros and Cons for SLWR are discussed, with consideration of the particular challenges of turret-moored FPSOs with large floater motions, hang-off geometry constraints at turret, hang-off loads, riser interferences, risers pre-installation, and turret disconnection constraints.

Sensory Fuzzy Evaluation System Applied in the Cabs of Mine Vehicles

2014 ◽  
Vol 548-549 ◽  
pp. 1943-1946
Author(s):  
Zhe Chen ◽  
Neng Chang ◽  
Xue Liang Ma
Keyword(s):  
Evaluation System ◽  
Sensory Experience ◽  
Harsh Environment ◽  
Fuzzy Evaluation ◽  
Evaluation Theory ◽  
Evaluation Indexes ◽  
Multi Level

The cabs of vehicles used in mines are complex man-machine interfaces since those vehicles normally operated in harsh environment. Multi-level fuzzy evaluation theory is a method used to study these interfaces. This paper describes the user sensory experience theory, based on which we establish fuzzy evaluation indexes and man-machine fuzzy evaluation prototype . Then, the method to determine the levels of factor weights and the selected approach of fuzzy synthetic operation has been developed. Finally, a case study has been presented to evaluate certain types of mine vehicle cabs.

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