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Open AccessArticle
14 Pages, 1,125 KB Download PDF

Inventory Management Practices during COVID 19 Pandemic to Maintain Liquidity Increasing Customer Service level in an Industrial Products Company in Mexico

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 613–626, 2020; DOI: 10.25046/aj050675
Abstract:

This work presents the development and improvement obtained by implementing inventory managing practices during the COVID 19 pandemic in a Mexican company, a leader in the industrial sector to overcome the effects on the Company’s economies due to constrained market to maintain liquidity and preserve employment by increasing customer service level ensuring the availability of…

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(This article belongs to the sp-covid19 (Special Issue on the Economic Impact of COVID-19 on Companies and Consumers 2020-21) & Section Operations Research & Management Science (ORM))
Open AccessArticle
9 Pages, 934 KB Download PDF

The COVID-19 Effect in Mexican SMEs

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 63–71, 2020; DOI: 10.25046/aj050608
Abstract:

This article presents a literature review on how the COVID-19 pandemic changed the way of managing risks in the supply chains of Mexican SMEs. Research was carried out in the most important scientific research databases. The spread of the pandemic in 2020 has affected public health and the world´s companies, including micro, small and medium…

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(This article belongs to Section Engineering Management (EMM))
Open AccessArticle
6 Pages, 726 KB Download PDF

Social Skills and Resilience in Adolescent of Secondary Level of a Public Educational Institution in Puente Piedra Lima – 2020

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 1036–1041, 2020; DOI: 10.25046/aj0505127
Abstract:

Social skills and resilience are very important aspects for mental health; therefore, it is necessary to take into account the positive contribution in the development of adolescents, they are in a vulnerable stage, adapting to physical, mental, emotional, etc. changes. Adolescents, not knowing how to handle the difficulties that may arise, if they do not…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Psychiatry (PSY))
Open AccessArticle
6 Pages, 828 KB Download PDF

Simulated Annealing for Traveling Salesman Problem with Hotel Selection for a Distribution Company Based in Mexico

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 5, Page # 500–505, 2020; DOI: 10.25046/aj050562
Abstract:

A distribution company in Mexico covers the travel expenses for 21 sales representatives. Currently, the routes they follow are not established clearly, which can lead to high costs in this subject. A reduction of such cost is sought after, by optimizing the routes for each one of them. The following research finds an improvement on…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Engineering Management (EMM))
Open AccessArticle
18 Pages, 2,462 KB Download PDF

Cluster Centroid-Based Energy Efficient Routing Protocol for WSN-Assisted IoT

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 4, Page # 296–313, 2020; DOI: 10.25046/aj050436
Abstract:

Wireless sensor network is highly resource constrained, where energy efficiency and network lifetime plays a major role for its sustenance. As the sensor nodes are battery operated and deployed in hostile environments, either recharging or replacement of batteries in sensor nodes is not possible after its deployment in inaccessible areas. In such condition, energy is…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Network Engineering (ENW))
Open AccessArticle
7 Pages, 1,179 KB Download PDF

Warehouse Relocation of a Company in the Automotive Industry Using P-median

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 3, Page # 576–582, 2020; DOI: 10.25046/aj050372
Abstract:

To have enough information on time can be helpful when companies try to reduce costs and operate more efficiently. An international company that supplies parts for the automotive industry is currently testing its new facilities in Mexico. The relocation of the raw materials and finished goods warehouses were tested using a P-Median model. The operating…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Industrial Engineering (EID))
Open AccessArticle
11 Pages, 2,283 KB Download PDF

A Survey and an IoT Cybersecurity Recommendation for Public and Private Hospitals in Ecuador

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 3, Page # 518–528, 2020; DOI: 10.25046/aj050364
Abstract:

It was analyzed the reference information on Cybersecurity architectures, models, standards, evaluations, mechanisms, and procedures applied to IoT domains, and public and private health area. The problem is the lack of proposals for IoT Cybersecurity in public and private hospitals to minimize random failures, ensure the privacy of personal data of patients, avoid the paralysis…

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(This article belongs to Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
7 Pages, 930 KB Download PDF

A Hybrid Approach for Intrusion Detection using Integrated K-Means based ANN with PSO Optimization

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 3, Page # 317–323, 2020; DOI: 10.25046/aj050341
Abstract:

Many advances in computer systems and IT infrastructures increases the risks associated with the use of these technologies. Specifically, intrusion into computer systems by unauthorized users is a growing problem and it is very challenging to detect. Intrusion detection technologies are therefore becoming extremely important to improve the overall security of computer systems. In the…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
7 Pages, 1,402 KB Download PDF

Automated Abaca Fiber Grade Classification Using Convolution Neural Network (CNN)

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 3, Page # 207–213, 2020; DOI: 10.25046/aj050327
Abstract:

This paper presents a solution that automates Abaca fiber grading which would help the time-consuming baling of Abaca fiber produce. The study introduces an objective instrument paired with a system to automate the grade classification of Abaca fiber using Convolutional Neural Network (CNN). In this study, 140 sample images of abaca fibers were used, which…

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(This article belongs to Section Software Engineering in Computer Science (CSE))
Open AccessArticle
12 Pages, 1,343 KB Download PDF

Using Metaheuristics-Based Methods to Provide Sustainable Market Solutions, Suitable to Consumer Needs

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 399–410, 2020; DOI: 10.25046/aj050252
Abstract:

Nowadays the buildings sector is one of the key sectors to achieve sustainability, with the correspondent consumers, in particular, the household consumers, having the need to perform sustainable choices every day, regarding the appliances to be acquired from the market. This is not only due to government’s growing concerns about sustainability but also with the…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Energy & Fuels (ENF))
Open AccessArticle
9 Pages, 1,592 KB Download PDF

Territorial Sales Redesign Using Geotechnical Tools

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 368–376, 2020; DOI: 10.25046/aj050248
Abstract:

In recent years there has been technological growth in the field of facility location, considering it as a significant factor to achieve greater competition among companies. The present work gives a methodological solution for a territorial redesign in a Mexican automotive parts distribution company with the support of Geotechnological tools like Geographic Information Systems (GIS)…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Transportation Science & Technology (TST))
Open AccessArticle
10 Pages, 831 KB Download PDF

Analysis of Cyberattacks in Public Organizations in Latin America

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 2, Page # 116–125, 2020; DOI: 10.25046/aj050215
Abstract:

It was analyzed certain information about cyberattacks in Latin America and methods to counteract the aggressions that affect services, data and infrastructure. The problem is the cyberattack on information networks where there is interdependence between processes, people and devices within public organizations with the negative consequence of denial of services. The objective is to propose…

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(This article belongs to Section Information Systems in Computer Science (CIS))
Open AccessArticle
5 Pages, 1,071 KB Download PDF

Rooftop Urban Agriculture Model with Two Tomato Varieties (Lycopersicum esculentum Mill) and Toppings in the High Jungle – Peru

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 1, Page # 446–450, 2020; DOI: 10.25046/aj050157
Abstract:

The study objective was to design and evaluate the agroecological system of an agricultural model with vegetable covers (Luffa cylindrica, Cyclanthera pedata and Mucuna pruriens) associated with tomato plants (Lycopersicum esculentum Mill), Rio Grande and Cherry varieties. The agroecological system is shown with its components of inputs, processes and outputs. The main entrances being solar…

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(This article belongs to Section Green & Sustainable Science & Technology (GSS))
Open AccessArticle
11 Pages, 1,566 KB Download PDF

Experimental Analysis in Alternate Current and Direct Current of the Operating Parameters of a Universal Single-Phase Engine

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 6, Page # 360–370, 2019; DOI: 10.25046/aj040646
Abstract:

This article presents the experimental analysis of a rotary machine, Universal Motor Analysis; analysis that obeys the purpose of obtaining the almost perfect understanding of the electromechanical behavior of said unit of analysis; It should be noted that the variables to be analyzed were: voltage, current, power, torque, rpm, and power factor; specifically said data…

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(This article belongs to Section Electrical Engineering (ELE))
Open AccessArticle
11 Pages, 13,074 KB Download PDF

A Method for Mosaicking Aerial Images based on Flight Trajectory and the Calculation of Symmetric Transfer Error per Inlier

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 6, Page # 328–338, 2019; DOI: 10.25046/aj040642
Abstract:

In recent years, development of aerial autonomous systems and cameras have allowed increasing enormously the number of aerial images, and their applications in many research areas. One of the most common applications is the mosaicking of images to improve the analysis by getting representations of larger areas with high spatial resolution. This paper describes a…

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(This article belongs to the SP8 (Special Issue on Multidisciplinary Sciences and Engineering 2019-20) & Section Imaging Science & Photographic Technology (IPT))
Open AccessArticle
9 Pages, 2,001 KB Download PDF

Transformation of Solar Energy to Electricity with Photovoltaic Systems, Reduction of Electrical Consumption and Installation of LED Lamps in the ITSAO

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 234–242, 2019; DOI: 10.25046/aj040529
Abstract:

In this work of technological development and research is presented the work done in the ITSAO to contribute to the use of clean energy such as photovoltaics and the implementation of activities to reduce electricity consumption by the technological community, the monitoring of electricity consumption is made on a monthly basis and an annual report…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Electrical Engineering (ELE))
Open AccessArticle
13 Pages, 1,217 KB Download PDF

Assessment of the Quality and Sustainability Implications of FIFO and LIFO Inventory Policies through System Dynamics

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 69–81, 2019; DOI: 10.25046/aj040509
Abstract:

Perishable inventory management contributes simultaneously to society and the economy, by reducing food wastage and capitalizing on the freshness of goods. For this reason, countless mathematical models have been developed for their effectiveness and cost-efficient management. Yet, the majority of these models can only optimize systems for a limited time frame, allowing for small gains…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Industrial Engineering (EID))
Open AccessArticle
8 Pages, 880 KB Download PDF

Mechanical Testing Methods for Body-Powered Upper-Limb Prostheses: A Case Study

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 5, Page # 61–68, 2019; DOI: 10.25046/aj040508
Abstract:

3D-printing technologies have greatly influenced the field of fabrication of medical devices. In particular, Fused Deposition Modeling 3D printing has emerged as one the most popular and most promising technologies for fabricating upper-limb prostheses. Over the last years, a variety of types and designs of 3D-printed hand prostheses have been created and are commercially available.…

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(This article belongs to the SP7 (Special Issue on Advancement in Engineering and Computer Science 2019) & Section Robotics (ROB))
Open AccessArticle
7 Pages, 1,429 KB Download PDF

Perfect Molding Challenges and The Limitations “A Case Study”

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 6, Page # 489–495, 2018; DOI: 10.25046/aj030657
Abstract:

Driven by today’s market demand, semiconductor is pushing towards the zero-defect direction. The improvement demanded in semiconductor manufacturing is becoming increasingly challenging. In this paper, common molding defects comprise of voids, incomplete fills, and piping holes are studied systematically, focusing on three key areas: 1) Potential mold flow weakness; 2) Molding temperature stability; as well…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Manufacturing Engineering (EMF))
Open AccessArticle
11 Pages, 3,199 KB Download PDF

Semi-Autonomous Robot Control System with an improved 3D Vision Scheme for Search and Rescue Missions. A joint research collaboration between South Africa and Argentina

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 6, Page # 347–357, 2018; DOI: 10.25046/aj030643
Abstract:

Rescue operations require technology to assist the rescue process. The robotic technology in these missions is becoming very important. The important aspects investigated in this study are the integration of a mechatronic system that will allow for a robotic platform with a vision system. The research collaboration between Argentina and South Africa is discussed, with…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Automation & Control Systems (ACS))
Open AccessArticle
9 Pages, 1,858 KB Download PDF

iSensA – A System for Collecting and Integrating Sensor Data

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 6, Page # 213–221, 2018; DOI: 10.25046/aj030628
Abstract:

The idea of monitoring several types of parameters in various environments has been motivating significant research works in Internet of Things (IoT). This paper presents the design and construction of iSensA, a system for integrating and collecting information from sensors. The solution implements a multi-sensor monitoring system and then expands the monitoring concept to an…

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(This article belongs to the SP6 (Special Issue on Recent Advances in Engineering Systems 2018-19) & Section Software Engineering in Computer Science (CSE))
Open AccessArticle
12 Pages, 7,416 KB Download PDF

Virtual Watershed System: A Web-Service-Based Software Package For Environmental Modeling

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 5, Page # 382–393, 2018; DOI: 10.25046/aj030544
Abstract:

The physically-based environmental model is a crucial tool used in many scientific inquiries. With physical modeling, different models are used to simulate real world phenomena and most environmental scientists use their own devices to execute the models. A complex simulation can be time-consuming with limited computing power. Also, sharing a scientific model with other researchers…

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(This article belongs to the SP5 (Special Issue on Multidisciplinary Sciences and Engineering 2018) & Section Interdisciplinary Applications of Computer Science (CSI))
Open AccessArticle
11 Pages, 1,404 KB Download PDF

Limitations of HVAC Offshore Cables in Large Scale Offshore Wind Farm Applications

Advances in Science, Technology and Engineering Systems Journal, Volume 3, Issue 2, Page # 146–156, 2018; DOI: 10.25046/aj030217
Abstract:

The energy marathon is becoming increasingly based on renewable sources, whereas the continuous decrease on the cost of energy production has supported in last decade, for instance, the development of large-scale offshore wind applications. The consistency and availability of the AC-working equipment portfolio is only limited by physical application boundaries, which are quite evident in…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electrical Engineering (ELE))
Open AccessArticle
14 Pages, 2,481 KB Download PDF

Novel Analysis of Synchronous and Induction Generators in Parallel Operation Mode in an Isolated Electric System

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 6, Page # 203–216, 2017; DOI: 10.25046/aj020625
Abstract:

This paper presents an analysis of a parallel connection of one synchronous generator and one self-excited induction generator that feeds a resistive load and an Induction Motor. The system voltage and frequency are controlled by a voltage control loop and a speed control loop connected to synchronous generator. The induction generator speed is controlled by…

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(This article belongs to the SP4 (Special issue on Advancement in Engineering Technology 2017-18) & Section Electrical Engineering (ELE))
Open AccessArticle
8 Pages, 10,700 KB Download PDF

Steel heat treating: mathematical modelling and numerical simulation of a problem arising in the automotive industry

Advances in Science, Technology and Engineering Systems Journal, Volume 2, Issue 5, Page # 55–62, 2017; DOI: 10.25046/aj020510
Abstract:

We describe a mathematical model for the industrial heating and cooling processes of a steel workpiece representing the steering rack of an automobile. The goal of steel heat treating is to provide a hardened surface on critical parts of the workpiece while keeping the rest soft and ductile in order to reduce fatigue. The high…

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(This article belongs to Section Applied Mathematics (MAP))

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