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1
Content available remote Green Manufacturing: An Assessment of Enablers’ Framework Using ISM-MICMAC Analysis
Ali Sadia Samar
Foundations of Computing and Decision Sciences
|
2022
|
Vol. 47, No. 3
271--290
EN
Manufacturing is one of the biggest drivers of a country's economic growth. Nevertheless, due to globalization and flourishing consumer markets, the technological influx in manufacturing evolution poses a significant threat to climate change. To deal with the situation, green manufacturing came forward to play a vital role in lowering the impact of mass production on the global environment. The qualitative research based on expert opinion is used to have viewpoints for the implementation of green manufacturing based on green supply chain manufacturing (GSCMEs) enablers. The study, in this regard, focuses on exploring the key enablers adopted by the manufacturers to embrace green practices by using framework based on Interpretative Structural Modelling and Cross-Impact Multiplication Applied to Classification (MICMAC) analysis. Results indicate that economic constraints and the regulatory framework have high driving power and less dependency power. Researchers provide managers with a new outlook on the future towards building an eco-friendly supply chain and gaining a competitive edge over their competitors.
2
Content available Investigating cause-and-effect relationships between supply chain 4.0 technologies
Hashemi-Tabatabaei Mohammad, Sharifpour Hojatallah, Ghaseminezhad Yaser, Amiri Maghsoud
Engineering Management in Production and Services
|
2022
|
Vol. 14, no. 4
22--46
EN
The developments of the fourth industrial revolution have caused changes in all areas of society, including production. The changes in production caused by the fourth industrial revolution have also resulted in fundamental changes in the supply chain and have converted it to supply chain 4.0. Organisations must be receptive to supply chain 4.0 to maintain their competitive advantage. Therefore, this study aimed to investigate the relationships among supply chain 4.0 technologies so that, by learning and understanding these connections, industries can pave the way for the implementation of these technologies in their supply chains and use them in problemsolving. The literature review was used to identify the supply chain 4.0 technologies, and the Delphi technique was applied to extract them, including the Internet of Things (IoT), cyber-physical systems, cloud computing, big data, blockchain, artificial intelligence, Radio-frequency Identification (RFID), augmented reality, virtual reality, and simulation. The relationships of supply chain 4.0 technologies were examined using the DEMATEL technique and based on interpretive structural modelling (ISM), their deployment map was drawn. The type of technologies was determined using the MICMAC method. The MICMAC analysis found that the artificial intelligence technology is independent and, based on the findings through the DEMATEL technique, this technology is related to simulation, which belongs to the first level of the interpretive structural modelling technique, and IoT, cloud computing, big data, and blockchain technologies, which are at the second level. Based on the ISM method, RFID, virtual reality, augmented reality and simulation technologies are located at the first level; IoT, cyber-physical systems, cloud computing, big data and blockchain technologies are situated in the second level; and artificial intelligence technology belongs to the third level. According to the related literature, few studies have been conducted on the issues of supply chain 4.0 and the technologies that affect it.
3
Content available remote Generic comparison of ISM and LSIT interpretation of geo-resistivity technology data, using constraints of ground truths: a tool for efficient exportability of groundwater and related resources
Jimmy George Nyakno, Richard Ekanem Kufre, Martin Ekanem Aniekan, Inyang Udosen Ndifreke, Emem Thomas Jewel
Acta Geophysica
|
2022
|
Vol. 70, no 3
1223--1239
EN
Geo-electrical resistivity technology, an investigative tool for prognosis or prospection of subsurface resources in relation to hydrogeology, environment, Archeology, engineering and mining, was employed to estimate the prime geo-electrical indices in a sedimentary environment using the interpretative candidacy of direct modelling of geo-electrical data through inverse slope method (ISM) and inverse modelling utilizing the least squares inversion technique (LSIT). The aim was to generically compare in-line with borehole indices, the results from the direct interpretation (ISM) with the conventional digitally computerized method (LSIT), which is associated with the ill-posed problem of inverse theory. The image maps, regression analysis and charts, from the qualitative and quantitative analyses of resistivity data, show that marginal correlations exist between ISM and LSIT in layer one while maximal correlation of resistivities is revealed in layers two and three. The curve types obtained from LSIT were 100% in agreement with the values of resistivities obtained from the ISM. Comparatively, the depth of investigation from the LSIT showcased a correlation with borehole depth in the range of 56.3–88.6% (average: 70.3%) while ISM has middling correlation of 79.0% with range of 68.0–87.7% in layers one to three distinctively delineated at the maximum electrical current separation. In terms of comparison, the depths and thicknesses displayed in Table 2 and Figs. 10–12, ISM is practically more compliant with the drilling results than the results from conventional and digitally computerized method (LSIT). Again, the results indicate the ill-posed problem of inverse theory associated with LSIT can be made well-posed by hybridizing the ISM and LSIT techniques in the interpretation of geo-resistivity data, mostly in the areas where there are no borehole logs (ground truths).
4
Content available remote Profiles of Interstellar Spectral Features Caused by Physical Parameters of Clouds
Krełowski J., Bondar A.
Acta Astronomica
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2022
|
Vol. 72, No. 1
69--76
EN
The disk of our Galaxy is filled with clouds of diffuse matter, modifying spectra of distant stars. These clouds are sources of extinction, polarization and of spectral features such as atomic and molecular lines as well as the diffuse interstellar bands (DIBs), still of unknown origin, though likely molecular. Apparently physical parameters of individual translucent clouds are various. We try to provide some constraints on theoretical models of translucent interstellar clouds. It is demonstrated that intensities and profile details of DIBs can be determined using the ESPRESSO spectrograph fed by VLT. This possibility follows its very high resolution and signal-to-noise ratio, necessary to analyze atomic and molecular features, detectable in spectra of OB-stars, and originated in single (thus - likely optically thin) interstellar clouds. Our set of five high resolution (λ/δλ =140 000) ESPRESSO spectra of hot, reddened stars allows us to analyze profiles of some DIBs. It is argued that more high quality spectra from ESPRESSO are necessary to identify the DIB cariers.
5
Stanowisko badawcze do automatycznej analizy jakości transmisji koncentratora KODEŚ z interfejsami LTE, NB-IoT oraz ISM
Błaszkiewicz Olga, Burczyk Robert, Czapiewska Agnieszka, Gajewska Małgorzata, Gajewski Sławomir, Marczak Andrzej, Miszewski Mariusz, Sadowski Jarosław, Stefański Jacek
Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne
|
2021
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nr 1
10--19
PL
Zaprezentowano podstawowe właściwości projektowanego koncentratora danych elektroenergetycznych KODEŚ oraz stanowisko badawcze do automatycznych pomiarów jakości transmisji w sieci LTE (Long Term Evolution), opracowane na potrzeby projektu badawczego. Głównym elementem stanowiska jest autorskie oprogramowanie, które umożliwia konfigurowanie urządzeń pomiarowych oraz definiowanie scenariuszy pomiarowych. Dopełnieniem tego jest dodatkowe oprogramowanie zastosowane do graficznej prezentacji otrzymanych wyników badań pomiarowych. W artykule opisano również stanowisko, wykorzystujące technikę radia programowalnego i otwarte oprogramowanie, emulujące funkcje stacji bazowej oraz terminala ruchomego sieci LTE.
EN
In this paper, authors present basic properties of the designed power data concentrator KODEŚ as well as the research stand for automatic measurements of transmission quality in the LTE cellular network. The stand has been created for the research project. The major part of the stand is the proprietary software that allows the user to configure measuring devices and define measurement scenarios. Additional software for a graphic presentation of obtained measurements results was created. Authors also present the stand that utilizes the software-defined radio and the open-source software which emulates both a base station and a mobile terminal of the LTE network.
6
Content available remote Patch antenna based on spiral split rings for bone implants
Rula Alrawashdeh
Przegląd Elektrotechniczny
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2020
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R. 96, nr 7
129--134
EN
In this paper, a patch antenna based on spiral split rings is proposed for bone implants in the 401-406 MHz Medical Device Radiocommunications Service (MedRadio) and 433-434 MHz Industrial, Scientific and Medical (ISM) bands. The antenna is small of only 7 mm in radius and 3 mm in thickness. It has obtained maximum gains of -36.8 and -35.6 dBi at 403 and 433 MHz, respectively in a simplified multilayer leg model. The antenna has a robust performance that is verified in simplified leg models of an adult and a child. It can communicate over a distance of longer than 12 m in an indoor environment. The antenna proposed in this paper is probably the smallest reported bone implantable antenna that works for the 401-406 MedRadio and 433-434 MHz ISM bands. The effect of the structure parameters on the antenna performance is investigated which provides guidelines for other designs inspired by such a structure.
PL
W artykule zaprezentowano projekt anteny bazującej na spralnych pierścieniach. Antenę zaprojektowaniu do umieszczenia w implantach kości i możliwości zastosowania w zakresie 401-406 MHz (zakres do zastosowań medycznych) lub 433-434 MHz. Średnica anteny nie przekracza 7 mm a grubość 3 mm.
7
Content available Interpretive structural modeling of identified success factors to lean implementation in SMEs
Shrimali Arvind Kumar
Quality Production Improvement - QPI
|
2019
|
Vol. 1, Iss. 1
69--77
EN
Lean practices are implemented in manufacturing enterprises to find hidden waste and attain continuous improvement. Various enterprises have experienced benefits owing to the Lean implementation. Following the use of appropriate lean instruments and techniques, there are many factors that affect successful lean implementation process. Researchers have identified a large number of these success factors to implementation of Lean. Understanding these enablers and the interactions between them can be crucial to the success of lean implementation. Interpretive Structural Modeling (ISM) is one of the established methodologies to bring forward the interrelationships among parameters of an issue or a problem. The purpose of this paper is to create the hierarchy of the various success factors to Lean Implementation according to their importance using the approach of ISM to facilitate Small and Medium enterprises (SMEs) across India.
8
Koegzystencja systemów LTE i WiFi w paśmie nielicencjonowanym
Wągrowski M., Sikora M., Wszołek J., Gozdecki J., Ludwin W., Kucharzyk K.
Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne
|
2017
|
nr 6
401--404, CD
PL
W artykule przedstawiono rozwiązania zastosowane w systemie LTE, które umożliwiają poszerzenie zasobów radiowych o częstotliwości pozyskane z pasm nielicencjonowanych. Opisano typowe techniki mające zapewnić systemom LTE i WiFi jednoczesny i sprawiedliwy dostęp do kanału radiowego w nielicencjonowanym paśmie. Przedstawiono wyniki badań wydajności stacji bazowej LTE-U oraz rezultaty testów wybranych metod, umożliwiających współistnienie systemu LTE z sieciami WiFi.
EN
The paper presents solutions applied to the LTE system, which allow expanding radio resources being used on the frequencies of unlicensed spectrum. It describes common techniques to ensure simultaneous and fair access to the radio channel in the unlicensed band for LTE and WiFi systems. The paper includes the results of performance tests for LTE-U and the verification of mechanisms enabling coexistence of LTE-U with WiFi networks.
9
Badanie i analiza kanału radiowego 868 MHz do komunikacji typu off-body w środowisku promu pasażerskiego
Cwalina K., Ambroziak S. J., Rajchowski P., Correia L. M.
Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne
|
2017
|
nr 2-3
76--81
PL
Przedstawiono badania i analizę kanału radiowego 868 MHz do komunikacji typu off-hody w sieciach BAN. Pomiary przeprowadzono w środowisku promu pasażerskiego z wykorzystaniem mobilnego stanowiska pomiarowego. Opracowano metodę pomiaru tłumienia propagacyjnego z wykorzystaniem radiowych pomiarów odległości, które umożliwiają, zautomatyzowanie procesu pomiarowego i uniezależnienie go od zmiennej prędkości poruszającej się osoby.
EN
In the article research and analysis of the 868 MHz radio channel to off-body communication in WBAN is presented. Measurements were carried out in an ferry passenger environment using the described mobile measurement devices. A method of the path loss measurements using radio distance measurements were developed. It has allowed to automate the process of measurements and made it independent on variable speed of moving person.
10
Content available System pomiarowy typu Master-Slave z bezprzewodowymi układami akwizycji danych typu Smart Sensor o wejściu napięciowym
Szweda D., Kciuk M.
Pomiary Automatyka Kontrola
|
2014
|
R. 60, nr 11
1029--1032
PL
Artykuł przedstawia bezprzewodowy system pomiarowy, złożony z kart akwizycji danych o wejściu napięciowym, opracowany na potrzeby pracy magisterskiej. Zadaniem systemu jest akwizycja, archiwizacja, monitorowanie oraz przesyłanie danych pomiarowych z urządzenia Slave do Master. Urządzenia akwizycyjne zostały wykonane jako urządzenia typu SMART SENSOR. Opracowany system pomiarowy został zastosowany do akwizycji danych w systemie odzyskiwania energii z otwieranych i zamykanych drzwi.
EN
This paper presents wireless measurement system, consist of a data acquisition cards with voltage inputs, developed as the MSc thesis. The purpose of the system is acquisition, archiving, monitoring and transfer measurement data from the slave device to the master device (Fig. 1). Acquisition cards has been made as a SMART SENSOR device (Fig. 2). Data acquisition card is a slave module in the measurement system. It allows to acquire the measurement data with maximum 8 inputs with adjustable delay time between the measurements. The data can be saved to a SD card, and sent by radio in the ISM band (Fig. 3). DAQ card configuration is done by a terminal application located on PC (Fig. 4). The network gateway consists of a manager, a user interface module (Fig. 5), the power module and converter UART / USB. Developed measurement system has been used as the data acquisition system in recover energy from opening and closing door circuit. The short measurement series were done for acquiring voltage (Fig. 6) and current (Fig. 7) when movement of the door was forced. Long acquisition series were done as well (Fig. 8). The long series took four days during typical office use. The measurement system can be used for monitoring various types of physical quantities by means of appropriate sensors and output voltage. Applied Gateway may be part of the monitoring and control of data acquisition DAQ cards used in the measurements.
11
Technologie bezprzewodowej komunikacji M2M w pasmach nielicencjonowanych – Wi-Fi (IEEE 802.11)
Zankiewicz A.
Elektro Info
|
2014
|
nr 12
74--79
PL
Artykuł przedstawia technologie bezprzewodowej komunikacji cyfrowej w nielicencjonowanych pasmach ISM oraz U‑NII bazujące na rodzinie standardów IEEE 802.11, rozpowszechnione pod handlową nazwą Wi-Fi. Obecnie są one praktycznie jedynym standardem używanym przy tworzeniu lokalnych bezprzewodowych sieci komputerowych (WLAN), a wraz z wdrażaniem systemów IoT (Internet of Things) odgrywają też coraz większą rolę w komunikacji typu M2M zapewniając bezprzewodową wymianę danych z inteligentnymi modułami czujników i sterowników.
EN
The paper describes the principles of operation of wireless data transmission technologies based on the Wi-Fi (IEEE 802.11) specifications and operating using unlicensed ISM and U-NII frequency bands. Wi-Fi technology, originally designed for computer network applications, due to development of chipsets with very low energy consumption is now also considered as a potential technology for wireless connections of intelligent sensors and controllers in M2M and Internet of Things applications.
12
Content available remote Wireless Measurement Modules for Multichannel Drivers Monitoring System
Różanowski K., Sawicki M., Sondej T.
Przegląd Elektrotechniczny
|
2013
|
R. 89, nr 12
138-141
EN
A radio communication system designed to operate in multichannel drivers monitoring system is presented in the article. The presented solution provides communication in the 2.4 GHz ISM band, at speeds of up to 300 kbps in full duplex mode. System throughput is shared dynamically between the wireless measurement modules. Delays in data transmitted in packets of up to 31B do not exceed 3ms.
PL
W artykule przedstawiono system komunikacji radiowej zaprojektowany do pracy w wielokanałowym systemie monitorowania kierowców. Zaprezentowane rozwiązanie zapewnia komunikację w paśmie ISM 2,4 GHz, z szybkością do 300kb/s, w trybie full duplex. Przepływność systemu dzielona jest dynamicznie pomiędzy bezprzewodowe moduły pomiarowe. Opóźnienia danych transmitowanych w pakietach o długości do 31 B nie przekraczają 3 ms.
13
Wirtualny analizator widma w paśmie ISM 2,4 GHz
Konczak M., Łukaszewski R., Winiecki W.
Elektronika : konstrukcje, technologie, zastosowania
|
2009
|
Vol. 50, nr 4
119-122
PL
Tematem artykułu jest wirtualny analizator widma działający w paśmie ISM 2,4 GHz. Do jego budowy wykorzystany został mikrokontroler podłączany do portu USB. Omówiono realizację programową oraz próbę stworzenia analizatora widma zbudowanego na bezprzewodowej karcie sieciowej. Wyniki pomiarów uzyskanych na analizatorze wirtualnym porównane zostały z otrzymanymi na profesjonalnym analizatorze widma.
EN
The subject of the paper is the 2.4 GHz ISM band virtual spectrum analyzer based on an USB microcontroller. Software of the analyzer was described. The attempt of creating a virtual spectrum analyzer based on a standard wireless network card was also described. Virtual analyzer's measurements were compared to professional spectrum analyzer's measurements.
14
Integrity management systems in power engineering
Janíček F., Poljovka P.
Zeszyty Naukowe. Elektryka / Politechnika Opolska
|
2008
|
Vol. 323, z. 60
123-124
15
Content available remote Cost reduction of TiAl by alternative production and integration of TiAl scrap recycling - concepts and vacuum-metallurgical equipment
Lochbichler C., Friedrich B., Jarczyk G., Scholz H.
Advances in Materials Science
|
2008
|
Vol. 8, nr 1(15)
67-74
EN
Due to high corrosion resistance and low density titanium alum in ides show a great potential as material for structural applications in the aerospace and automotive industry. However the high actual production costs for semi-finished products slow down a break through to mass production of TiAl. Current research projects at IME, Aachen funded by AIF "Otto von Guericke" and BMBF aim on cost reduced production methods of TiAl and on the minimisation of downgrading TiAl scrap. This article presents firstly the state of the art of TiAl production by vacuum arc (re)melting (V AR) or induction skull melting (ISM). A comparison of new process routes under special consideration of recycling issues will follow. Innovative processing and equipment concepts are shown by intelligent combination of well known vacuum melting and remelting processes such as vacuum induction melting, specialized using ceramic lining and deoxidisation with e.g. electro slag remelting (ESR). For each process step and accordingly equipment the metallurgical opportunities are pointed out and the way to make use of them within the process route is described. Requirements on input material and final metal quality addicted to the processing route and refining techniques with their adjustment in respect to TiAl are mentioned. Selected results of laboratory and pilot scale experiments done at IME in Aachen and equipment needs therefore are shown.
16
Content available remote Cost reduction of TiAl by alternative production and integration of TiAl scrap recycling - concepts and vacuum-metallurgical equipment
Lochbichler C., Friedrich B., Jarczyk G., Scholz H.
Advances in Materials Science
|
2007
|
Vol. 7, nr 4(14)
81-88
EN
Due to high corrosion resistance and low density titanium aluminides show a great potential as material for structural applications in the aerospace and automotive industry. However the high actual production costs for semi-finished products slow down a break through to mass production of TiAl. Current research projects at IME, Aachen funded by AIF "Otto von Guericke" and BMBF aim on cost reduced production methods of TiAl and on the minimisation of downgrading TiAl scrap. This article presents firstly the state of the art of TiAl production by vacuum arc (re)melting (VAR) or induction skull melting (ISM). A comparison of new process routes under special consideration of recycling issues will follow. Innovative processing and equipment concepts are shown by intelligent combination of well known vacuum melting and remelting processes such as vacuum induction melting, specialized using ceramic lining and deoxidisation with e.g. electro slag re-melting (ESR). For each process step and accordingly equipment the metallurgical opportunities are pointed out and the way to make use of them within the process route is described. Requirements on input material and final metal quality addicted to the processing route and refining techniques with their adjustment in respect to TiAl are mentioned. Selected results of laboratory and pilot scale experiments done at IME in Aachen and equipment needs therefore are shown.
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