Wyniki wyszukiwania - Biblioteka Nauki

1

Shifts in Lithuania’s Agri-food Industry Export Competitiveness: a Comparative Analysis Versus High- and Medium-high Technology Manufacturing Industries

100%

Vitunskiene V. , Serva E.

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2015

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tom 6

|

nr 1

7-31

EN

Given the rising importance of global value chain, this paper analyses long-run shifts in export competitiveness of Lithuania’s agri-food industry compared to high and medium-high-technology industries in the context of Lithuania’s export vertical specialization. The combination of two complementary parameters of competitiveness i.e. Balassa (1965) index of Revealed Comparative Advantage (RCA) and Total Effect (TE) index proposed by Nyssens and Poullet (cited in Ama-dor and Cabral, 2008, p. 202) were used. The matrix of both indexes builds on the scheme of analytical tool “products mapping” suggested by Widoto (2009). Our analytical tool is applied for the empirical analysis of export flows of goods by three end-use categories within aggregate agri-food industry the same as four manufacturing industries classified by R&D intensities, i.e. high-, medium-high-, medium-low- and low-technology industries. The OECD’s STAN Bilateral Trade Database by Industry and End-use category at the same time was applied to empirical analysis. The findings based on detailed analysis indicated significant differences in export competitiveness and its gains or losses in a long-term period among different reporting Lithuania’s industries and different goods by end-use category.

2

Industry 4.0 – the perspective of international economics. The case of Polish-German relationships

100%

Götz M.

Przegląd Zachodni

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2017

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nr 4(365)

169-185

EN

Industry 4.0 is associated with the Internet of Things, Internet of Services, and Cyber-Physical Systems (CPS). This revolution is profoundly transforming the current business models. There is a growing interest in this phenomenon among scholars, policy makers and representatives of business and industry as it poses several challenges to the national legal systems, labour markets and technical capacities. Yet little is known about the international context of the fourth industrial revolution. This paper aims at bridging the gap in this respect. Drawing on the Polish-German case it identifies the research areas worth considering and advances a hypothesis on economic ties in the context of Industry 4.0. The author outlines the premises of the fourth-generation industry, diagnoses and discusses the main risks and benefits associated with it. The paper might be regarded as a starting point for further, more detailed studies on this topic.

3

Wizje i strategie wytwarzania. Cz. I

100%

Grzesik W.

|

2010

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tom R. 83, nr 3

145-148

PL

Stan obecny, perspektywy i strategie rozwoju przemysłu wytwórczego. Formy zmienności maszyn i systemów wytwórczych. Wytwarzanie nowej generacji (NGM). Przyszłościowe technologie wytwórcze, wytwarzania zrównoważone i cyfrowe. Zmiany konieczne w nauce i edukacji w innowacyjnej gospodarce.

EN

Current condition and production development prospects and strategies. Changes which occur to the production systems and machines. Specific design work on the new generation (NGM) machines. Prospective process profiles: clean production, balanced production, digital production. Changes which should occur to the systems of management of science and education for adjustment to innovative economy.

4

Montaż zewnętrzny jako krytyczna faza produkcji urządzeń

88%

Kościelny R.

|

2003

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tom Vol. 8, No. sp.

249-256

PL

Dokumentacja techniczna montażu dźwignic nie zawsze opracowywana jest z uwzględnieniem wszystkich warunków występujących w miejscu montażu ostatecznego. Niedostatecznie skrupulatna analiza warunków montażu zewnętrznego może prowadzić nie tylko do komplikacji organizacyjnych, lecz stwarza także zagrożenie dla be/piecznego przebiegu prac montażowych lub wręcz kończy się katastrofą.

EN

Erection at sile is the most important stage of manufacturing. Costs of a mistake at the site can be equal to the appliance price. The importance of assembly procedure and quality of its execution is often neglected even b\ well known manufacturers. The erection team do usually their routine work accordingly their standard procedure. Each erection site differs from another and the differences can excesses beyond the standard safety margin. The less standard erection conditions, the more preparation for assembly work is needed. In the paper, there arc presented two non-standard cases of erection. One of them was broken by a serious accident, which occurred as a result of routine erection procedure and execution. Some remarks and conclusions are included.

5

SIMULATION ANALYSIS OF A PRODUCTION PROCESS WITH SELECTED SIX SIGMA RATIOS

88%

Dobrzyński M. , Waszczur P.

LogForum

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2012

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tom 8

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nr 1

47-54

EN

Background: Computer technologies allow more and more to model as well as to perform simulation experiments of various processes. The simulation analysis provides a better understanding of the interdependencies between various stages of production processes. Methods: The results of simulation studies were presented, the aim of them was to show the opportunities of the analysis of the process according to the scenarios and variants developed in connection with the qualitative assessment process. The study was based on simulation models developed and programmed for the processing of parts in an automated production line. The results of the conducted simulation experiments were referred to the primary ratios of the system work like the use of machines and other means of production, capacity, number of defects, etc. The analysis of the process was expanded by the qualitative assessment, based on selected ratios used in Six Sigma methodology. Results: The significant influence of the identification of so-called "hidden factories" in the production process on the value of sigma level was observed. Conclusions: The application of Six Sigma methodology and its statistical methods has a significant importance in the estimation and improvement of processes. The identification and the choice of number of inspection points are important for the monitoring and evaluation of the whole process. The obtained results confirmed the earlier assumptions of great importance of "hidden factories". Not revealing them influences significantly the quality of a process.

6

DaCoTraP - A web based platform for metal forming process chain

88%

Biró V. , Banabic D.

|

2011

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tom Vol. 11, No. 2

265-270

EN

A standard metal forming research process includes equipments in different locations. The data between the testing, simulation and manufacturing equipments are usually transmitted with different storage devices. The purpose of the project is to eliminate the need of these storage devices by allowing the different devices to synchronize between them using the internet. The solution to the distance problem is a platform capable of collecting data, processing it and serving it back upon request. Using this platform, the machines will be able to communicate with each other in almost real-time independently from their location. After studying the existing research in this field we concluded that there are numerous oth-ers working on machine-to-machine communication and control through the internet. Using the existing research we will be able to build a platform of applications that will be able to collect data from different devices, process it and redistribute it. The most important one of the applications will be the ASP .Net webpage project that will allow users to manipulate the devices and manage/visualize data. The different components of the system will communicate using HTTP protocol through the port 80 and use an XML-based custom language. Because of its high configurability, flexibility, Iow price and robustness the solution will be applicable in almost every situation.

PL

Standardowy proces wytwarzania opierający się na przeróbce plastycznej obejmuje urządzenia zlokalizowane w różnych miejscach. Przekazywanie danych pomiędzy agregatami wykorzystywanymi do badania materiałów, symulacji i wytwarzania gotowych produktów odbywa się za pośrednictwem urządzeń służącymi do przechowywania danych. Celem niniejszej pracy jest wyeliminowanie tych urządzeń i umożliwienie synchronizacji pomiędzy różnymi urządzeniami przez internet. Rozwiązaniem tego problemu jest platforma umożliwiająca zbieranie danych, ich przetwarzanie i odsyłania zgodnie z przeznaczeniem. Poprzez tą platformę poszczególne urządzenia będą mogły komunikować się pomiędzy sobą niemal w czasie rzeczywistym, niezależnie od swojego położenia. Analiza dostępnych badań w tym zakresie wykazała, że istnieje szereg takich systemów pracujących na zasadzie komunikacji maszyna-maszyna poprzez internet. Na podstawie tych badań zbudowano platformę aplikacji, która umożliwia zbieranie danych z różnych urządzeń i procesów oraz redystrybucję tych danych. Najważniejszym zastosowaniem tej aplikacji jest projekt ASP.Net webpage, który pozwoli użytkownikowi na sterowanie urządzeniami i wizualizację danych. Różne składowe systemu komunikują się za pośrednictwem HTTP poprzez port 80 i wykorzystują język oparty na XML. Ze względu na swoją łatwą konfigurowalność, elastyczność, niską cenę i niezawodność zaproponowane rozwiązanie może być wykorzystane w różnych zastosowaniach.

7

Impact Of The Manufacturing Sector On The Export Competitiveness Of European Countries – A Spatial Panel Analysis

88%

Kordalska A. , Olczyk M.

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nr 4

105-120

EN

The purpose of this paper is to determine how changes in the export competitiveness of the EU economy (measured by exports and net exports) depend on changes in the competitiveness of processing industries, on the basis of manufacturing data from 19 EU countries over years 1995-2009 and using a spatial panel data model. The determinants of export competitiveness are selected in the light of predictions from international trade theory, growth theory and the theory of innovation. In particular, the paper explores how the size of foreign demand, the value of domestic demand, the level of ULC in the sector, the degree of openness of the sector to foreign markets, labour productivity and intermediate consumption in a sector affect the export competitiveness of the European economies selected. The results from spatial data models lead to a conclusion about the statistical significance of spatial dependencies in export competitiveness modelling. The analysis indicates the different determinants of export competitiveness, both if it is measured by export value and if it measured by net exports. The authors hope that the results will be a voice in the discussion on enhancing the competitiveness of European industrial sectors

8

The Evolution of the German industrial policy in the context of challenges to the global economy

88%

Ulbrych M.

Przegląd Zachodni

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2017

|

nr 2(363)

277-293

EN

The manufacturing sector plays a much stronger role as a driver of growth and employment in Germany than in other countries. Therefore it seems appropriate to identify the essential features of German manufacturing and to analyse the evolution of industrial policy priorities in this country. In this respect, the research is performed primarily on the basis of the review of the literature and an analysis of statistical data.

9

Modelling of a computer integrated manufacturing and management system as a tool of organization improvement

88%

Lewoc J. B. , Izworski A. , Skowroński S. , Chomiak-Orsa I.

Informatyka Ekonomiczna

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2013

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nr 4(30)

226-239

EN

This paper presents a predicted target architecture of an integrated manufacturing and management system, based on a metropolitan-type intranet and an industrial process control and monitoring network. Such systems are urgently required by prospective users, especially large-scale manufacturing enterprises. Nevertheless, neither big manufacturers of computer integrated manufacturing systems nor big manufacturers of computer integrated systems are willing to develop combined computer integrated manufacturing and management systems. To evaluate performance, a method developed for packet switching networks with end-to-end acknowledgement was applied. The paper describes the investigations carried out for the case study. Some consideration is given to the performance evaluation accuracy, based on the validation work results obtained from analytical work, simulation and measurements on the Polish pilot wide area network.

10

New possibilities of application of composite materials with soft magnetic properties

75%

Ziębowicz B. , Szewieczek D. , Dobrzański L. A.

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2007

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tom Vol. 20, nr 1-2

207-210

EN

Purpose: The purpose of the paper is characteristic of properties and application possibilities of modern soft magnetic materials and to show the influence of them on the developed of modern technology in different branches of techniques. Another aspect involved in the paper is to present the material and technological solution which makes possible obtaining soft magnetic composite materials: nanocrystalline material - polymer type. Design/methodology/approach: The main base of the paper is to show the properties and possibilities of application of modern soft magnetic materials with taking into consideration the development of manufacturing technology of these materials which by obtaining the maximum possible values of properties allows for simplification of machines and devices construction with use of magnetic elements. Findings: Modern soft magnetic materials have optimum technology of production with properties that allow for miniaturizing, simplification and lowering the costs of devices. Practical implications: The usability of modern soft magnetic materials as inductive component in electronic industry depends upon further investigations. Originality/value: The paper is the review of modern magnetic materials development and shows the material and technological solution which make possible obtaining magnetic composite materials with assumed properties.

11

Autonomous materials handling robot for advanced manufacturing applications

75%

Butler L. J. , Bright G.

|

tom No. 5 (8)

17-26

EN

There is a need for mobile robots in reconfigurable manufacturing systems to reduce bottlenecks that occur in associated materials handling systems. These bottlenecks can occur as a result of the mass production of custom products. The project has focused on researching, designing, assembling, testing and validating a two-wheeled autonomous materials handling robot for reconfigurable manufacturing systems. A Mechatronic engineering approach, (system integration), has been used for the project. The approach required a vehicle that was dynamically and statically stable while in operation. Research has been done to obtain the optimum control strategy for the purpose of keeping the robot balanced for variable load characteristics. A navigation system has been researched that will allow the vehicle to perform materials handling tasks necessary to reduce bottlenecks. A wireless communication system has also been incorporated into the infrastructure of the vehicle. Performance analysis and testing in a reconfigurable production environment proves the viability of the materials handling system. This involves vehicle scheduling and routing while performing materials handling tasks.

PL

W rekonfigurowalnych systemach produkcyjnych istnieje zapotrzebowanie na zastosowanie mobilnych robotów pozwalających na złagodzenie problemów "wąskich gardeł", które występują w skojarzonych systemach transportu i podawania materiałów. Takie wąskie gardła mogą wystąpić również podczas masowej produkcji wyrobów powszechnego użytku. Omawiane przedsięwzięcie było ukierunkowane na badania, projektowanie, montaż, testowanie i walidację dwukołowego autonomicznego robota do transportu i podawania materiałów stosowanego w rekonfigurowalnych systemach produkcyjnych. Dla potrzeb tego przedsięwzięcia zastosowano podejście inżynierii mechatroniczej (integracja systemu). Takie podejście wymagało użycia urządzenia jezdnego, które byłoby dynamicznie i statycznie stabilne w trakcie działania. Przeprowadzono badania ukierunkowane na uzyskanie optymalnej strategii sterowania, pozwalającej na utrzymanie robota w równowadze przy zmiennych charakterystykach obciążenia. Poszukiwano też takiego systemu nawigacji, który pozwoli pojazdowi wykonywać zadania związane z transportem i podawaniem materiałów, niezbędne do zmniejszenia uciążliwości "wąskich gardeł". Do infrastruktury pojazdu włączono również bezprzewodowy system łączności. Analiza parametrów eksploatacyjnych oraz testowanie w rekonfigurowalnym środowisku produkcyjnym udowodniły przydatność systemu do transportu i podawania materiałów. Te badania obejmowały opracowanie harmonogramów czasowych i tras ruchu pojazdu podczas wykonywania zadań związanych z zadaniami transportu i podawania materiałów.

12

A simulation approach to evaluating manufacturing system performance

75%

Wiśniewski T. , Zaikin O.

|

tom Vol. 2, No. 3

63-70

EN

Since testing wide range of management decision in real-world production is absolutely impossible, discrete-event simulation has often been adopted to evaluate the manufacturing system performance. Performance of various layout alternatives can be studied using simulation. In this paper there are presented reasons to use simulation in order to evaluate manufacturing system performance. Paper presents a simulation approach to assessing the impact of management decision on a production process and the associated impact on costs and on potential gain.

13

Propozycja prostego, wyprzedzającego wskaźnika koniunktury w przemyśle

75%

Olesiński B.

Prace i Materiały Instytutu Rozwoju Gospodarczego SGH

|

2012

|

tom 90: Badania koniunktury - zwierciadło gospodarki. Część I

215-227

PL

W artykule podejmuje się próbę opracowania prostego, wyprzedzającego barometru koniunktury dla produkcji przemysłu przetwórczego w Polsce na podstawie danych z badań koniunktury z lat 1997-2012 i zbadania jego zdolności prognostycznej. Przy doborze wag dla poszczególnych komponentów wskaźnika wykorzystano metodę głównych składowych. Proponowany wskaźnik trafnie prognozuje niedalekie wystąpienie punktów zwrotnych w przebiegu indeksu produkcji sprzedanej przemysłu przetwórczego i barometru koniunktury IRG SGH. Pomimo pewnych zastrzeżeń, przeprowadzona analiza wykazała użyteczność metody głównych składowych w konstruowaniu tego typu wskaźników.

EN

The paper proposes a simple leading indicator for manufacturing in Poland based on business survey data data of 1997-2012 and tests for its forecasting capability. Principal components analysis (PCA) was used to compute weights for series to compose the indicator which proved to be efficient in forecasting forthcoming turning points of the sold manufacturing production index, as well as the RIED WSE composite indicator for the Polish economy. Our analysis has proved that, in spite of some drawbacks, PCA might be useful for further construction of this type of indicators.

14

Virtualisation of casting engineering

75%

Suchy J. S.

|

2007

|

tom Vol. 24, nr 1

430-434

EN

Purpose: Fast response to an enquiry, minimization of costs of identification of best-suited process solution, as well as a capacity to tackle new challenges is the shortest description of the requirements posed by the contemporary market of machines and equipment. These, in consequence, called for making use of mathematical models and their solution by means of simulation algorithms. Design/methodology/approach: The notable effectiveness of numerical methods streamlined the production preparation process. Maintaining competitiveness, even more tough because of economic factors, is only possible due to cost-effective operation, high quality and well-timed order completion. These, on the other hand, can be facilitated by a broad application of IT tools aiding production management and preparation. Findings: Integration of systems aiding design processes, systems used for simulating selected elements of technologies, as well as of systems supporting instrumentation manufacturing calls for a need to solve a number of complex problems related to IT, mathematical modelling, logistics and knowledge management. Software packages for a simulation of processes that are indispensable in order to achieve the designed distribution of matter structures and condition are of particular importance. Research limitations/implications: Despite the fact that there is a wide range of software for these purposes available on the market, there is a need to build and integrate into IT systems new purpose-developed solutions customised to technologies applied and non-standard problems. Originality/value: Virtualization of casting engineering.

15

Intelligent condition monitoring of high-power laser systems

75%

Howlett R. J. , Dawe G. , Walters S. D.

|

2007

|

tom Vol. 33, no 2

51-59

EN

Powerlase Limited designs and manufactures diode-pumped solid-state Neodymium Yttrium Aluminium Garnet (Nd:YAG) lasers for industrial applications in the materials-processing and microelectronics market places. Powerlase has developed new advanced technology which enables the combination of high-intensity short pulse outputs with high energies and high repetition rates to yield several hundred watts of good beam quality. The Company’s products find application in aerospace, motor-vehicles, microelectronics, PCB production, ablative lithography, and many other areas. These lasers are used in manufacturing processes where the avoidance of unplanned downtime and the ability to maintain high beam stability and consistent power output is important. This paper is a case study describing a project to investigate, design and implement a condition monitoring system utilizing intelligent techniques. The aim of the project was the detection of the degradation in the system, as an indicator of future problems, but before it became severe enough to adversely affect the manufacturing process. The development of a strategy is described for the analysis of the system to deduce the physical system variables to be monitored. A brief account is given of a rule-based methodology for analyzing the system variables to predict the early onset of failure. A neural network technique is described that detects reduction in power output through the automated analysis of the drive current-power characteristic of the light amplification units. The power level monitor created permits measurement of the output of the laser using an inexpensive power sensor and without the necessity for an expensive high-accuracy power meter.

16

Znaczenie specyfikacji geometrii wyrobów w procesie konstruowania i wytwarzania części maszyn

63%

Dudziak M. , Humienny Z. , Kołodziej A.

|

2010

|

tom R. 83, nr 5-6

356-356

PL

Wskazano na znaczenia i potrzeby wykorzystania w skali międzynarodowej jednoznacznego i spójnego języka komunikacji między konstruktorem, technologiem i metrologami, określającego maksymalne dopuszczalne zmiany kształtu, profilu, kierunku, położenia i bicia w stosunku do geometrii nominalnej wyspecyfikowanej na rysunku. Pokazano kierunki prac ISO nad rozwojem i doskonaleniem zasad specyfikacji geometrii wyrobów. Przedstawiono wybrane przykłady specyfikacji tolerancji geometrycznych wskazując, że opanowanie umiejętności prawidłowej interpretacji i stosowania tolerancji geometrycznych wymaga ciagłego doskonalenia programów i procesów nauczania na uczelniach technicznych oraz seminariów i szkoleń dla przemysłu.

EN

Attention is called to importance of international use of an univocal and coherent communication language between the designers, process engineers and metrology engineers for determination of the acceptable maximum deviations in the products form, profile, direction and run out against respective nominal parameters specified in drawings. Explained are works carried out by ISO with respect to development and improvements to the product geometry specification rules.

17

The influence of heat treatment on the microstructure of GA8 magnesium alloy

63%

Kiełbus A. , Adamiec J. , Cwajna J. , Paśko J.

|

2007

|

tom Vol. 20, nr 1-2

131-134

EN

Purpose: GA8 magnesium alloy is a general purpose gravity sand casting alloy containing aluminium, zinc and manganese. Typically, it is used in aerospace or commercial casting applications particularly where there is no high temperature requirement. The aim of this paper is to present the results of investigations on the microstructure of the GA8 magnesium alloy after heat treatment. Design/methodology/approach: The study was conducted on GA8 magnesium alloys in as-cast condition and after heat treatment. The microstructure was characterized by optical microscopy (Olympus GX-70) and a scanning electron microscopy (Hitachi S3400) equipped with an electron dispersive detector EDS (VOYAGER of NORAN INSTRUMENTS). To measure the stereological parameters, an image analysis program "AnalysisPro(R)" was used. Findings: The microstructure of GA8 magnesium alloy has a solid solution structure alpha with alpha+discontinuous beta areas and continuous beta (Mg17Al12) phase at grain boundaries. After solution treatment a reduction of the number of beta precipitations was observed. Application of ageing treatment caused precipitation of discontinuous beta phase. Research limitations/implications: Future researches should involve investigations of the effect of heat treatment parameters on the mechanical properties of GA8 magnesium alloy. Practical implications: The established heat treatment parameters can be useful for preparing heat treatment technology of the GA8 magnesium alloy. Originality/value: The relationship between the initial structure, heat treatment parameters and Mg17Al12 phase morphology in GA8 magnesium alloy was specified.

18

Crystallinity degree of parts manufactured in multicavity injection mould

63%

Jaruga T. , Bociąga E.

|

2008

|

tom Vol. 29, nr 1-2

33-40

EN

Purpose: Crystallinity degree of injection moulded parts made from polyoxymethylene was tested. The parts came from a mulitcavity injection mould with geometrically balanced runners. The purpose of research was to check if there are differences in crystallinity degree between parts from different cavities. Methodology DSC (Dynamic Scanning Calorimetry) tests were made and according to the obtained DSC curves crystallinity degree value was calculated for injection moulded parts. Findings: The results of research made show that the parts from particular mould cavities differ in crystallinity degree and the values are affected by thermal conditions which are different across the mould and, of course, for each cavity too. Research limitations: In this research only one multicavity injection mould was tested. It has a specific layout of runners and cavities and cooling channels that determine the polymer flow in the mould and other conditions like mould temperature distribution. It is usually supposed that the parts placed in areas of higher temperature in the mould will have higher crystallinity degree values. However, each mould requires separate analysis as it is built in another way and the extrapolation of the results of this research to other injection moulds can lead to errors. Practical implications: The results of this investigation can be useful for mould designers. The occurrence of different properties of parts from multicavity injection moulds is especially important in case of precision injection moulding, particularly for small parts. The way to minimize the problem with unequal part properties like crystallinity degree (which results in different mechanical properties) is minimizing the temperature differences in the mould. Originality The research made in last years by other scientists show that even when using geometrically balanced runners in the mould the problems with unequally filling cavities can occur, especially due to shearing phenomena in runners. This leads to differences in weight of parts. The work was mostly focused on the problems with filling imbalance and phenomena in runners or showing different weight of the parts. In this paper it was shown other important consequences of filling imbalance in the mould.

19

Model oddziaływań EMC w gnieździe zrobotyzowanym

63%

Missala T.

|

2012

|

tom R. 88, nr 2

1-3

PL

Gniazdo zrobotyzowane jest typowym przykładem instalacji stacjonarnej w rozumieniu dyrektywy kompatybilności elektromagnetycznej. Przy ocenie zgodności takiej instalacji wymagana jest analiza oddziaływań w obszarze EMC. W pracy przedstawiono propozycję modelu macierzowego umożliwiającego wnikliwą analizę oddziaływań do oceny kompatybilności elektromagnetycznej gniazda zrobotyzowanego.

EN

Robotic manufacturing system is a typical example of a fixed installation, as it is defined in the Electromagnetic Compatibility Directive. In the process of conformance assessment of such an installation, the EMC impact analysis is required. The proposal of a matrix model that give the possibility to execute such a detailed analysis is done in the paper.

20

Perspektywy rozwoju technologii oraz przetwórstwa szkła w aspekcie ochrony środowiska i wzrastających cen energii. Wystąpienie na IX Koleżeńskim Zjeździe Seniorów Przemysłu Szklarskiego w Solcu Zdroju - Grzybowie

63%

Wasylak J.

|

2011

|

tom R. 62, nr 4

16-18

PL

W prezentacji przedstawiono postęp techniczny w technologii przemysłowej topienia szkła, nowoczesne metody przetwarzania masy szklanej w wyroby. Zaprezentowano postęp techniczny w przetwórstwie szkła oraz nowoczesne obszary zastosowania szkła.

EN

The presentation presents the technical progress in the industrial melting glass technology, modern methods of processing molten glass into articles. It was presented the modern glass application areas and their technical development in the manufacturing glass in the last years.