16 research outputs found

    Razvoj i primena ciljno vođenog procesnog skladišta podataka kao osnove za inteligentnu analizu procesa održavanja opreme

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    Problem unapređenja poslovanja sa stanovišta optimizacije procesa i smanjenja troškova je standardni cilj svakog poslovnog sistema. Novija unapređenja su se zasnivala na primenama najnovijih tehnologija, ali su se one prvenstveno bavile parcijalnim segmentom poslovanja, kao na primer kod održavanja opreme radnim nalozima i analizama rezultata otklanjanja kvarova. Nisu uzimale u obzir kompletan proces, od prijave kvara do trenutka otklanjanja kvarova. Zbog toga su predložena rešenja bila parcijalna i u nekim slučajevima davala potpuno pogrešne rezultate analiza. Predloženo rešenje se bazira na definisanju načina obuhvata kompletnog procesa, izborom najoptimalnije standarda za snimanje, analizu i optimizaciju procesa i izborom odgovarajućeg formata podataka koji može da se usaglasi na analiziranim procesom i definisanim objektima snimljenim tokom procesa. Zbog toga se rešenje baziralo na primeni odgovarajućeg standarda za tu vrstu procesa do koje se došlo primenom višekriterijumske analize i analizom dostupne stručne literature, zatim na primeni skladišta podataka kao opšte strukture podataka, a dodatnim analizama je usvojen procesno skladište podataka (Process Data Warehouse, PDW), sa ciljnim parametrima analize i definisanim graničnim vrednostima. Ključni rezultati dobijeni analizom su pokazali da je primena izabranog standarda za snimanje procesa obezbeđena ključna baza elemenata koji su potrebni za optimizaciju, da je primenom objektnog PDW-a obezbeđena kvalitetna i realna baza podataka. Transformacijom podataka iz relacione u strukturu skladišta podataka, dobijena je jednostavna struktura koja je obezbedila dinamički pristup podacima i njihovo dinamičko grupisanje i specijalizaciju, a dodatna proširenja koja su se odnosila na granične i ciljane vrednosti su u potpunosti opravdale primenjen koncept. Ovim konceptom je prikazano da od prvobitnog polazišta da je sistem održavanja vrlo uspešan (uptime opreme na nivou >95%) kad se posmatra samo radni nalog, došlo se pokazatelja da u preko 30% intervencija, kad se pogleda kompletan proces, dolazi do kašnjenja u otklanjanju kvarova

    Sistem Rantai Blok Untuk Logistik Dan Pembelian Komponen Reparasi Kapal Pada Galangan

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    Indonesia merupakan salah satu negara maritim terbersar di dunia. Dengan kondisi geografis yang unggul, Indonesia dapat unggul dalam persaingan dibidang kemaritiman. Perkembangan teknologi dan digitalisasi yang pesat dapat dimanfaatkan untuk pengembangan di bidang kemaritiman. dalam mengupayakan pengembangan teknologi dan digitalisai, dapat menghasilkan produktifitas industri dalam era industri 4.0. Blockchain merupakan salah satu inovasi pada bidang teknologi dan digitalisasi yang dapat diterapkan dalam dunia maritime, salah satunya untuk supply chain management. Penggunaan sistem informasi berbasis blockchain dapat diimplementasikan dalam galangan kapal untuk meningkatkan produktifitas industri kemaritiman. Dalam teknologi ini, transparansi dan juga desentralisasi data dapat diterapkan pada galangan kapal. Blockchain dapat diterapkan dalam proses procurement pada galangan kapal. Fitur sistem informasi ini difungsikan untuk proses pengadaan material dan component untuk reparasi kapal. Sehingga dengan sistem informasi berbasis blockchain dapat mempermudah proses pengadaan barang pada galangan untuk meningkatkan produktifitas industri tersebut. =================================================================================================== Indonesia is one of the largest maritime countries in the world. With superior geographical conditions, Indonesia can excel in competition in the maritime sector. Innovation can utilize the rapid development of technology and digitalization to develop the maritime sector. Pursuing technology development and digitalization can produce industrial productivity in the industrial era 4.0. Blockchain is one of the innovations in technology and digitalization. It can be applied in the maritime world, one of which is supply chain management. The use of blockchain-based information systems can be implemented in shipyards to increase the productivity of the maritime industry. In this technology, transparency, as well as data decentralization, can be applied to shipyards. Blockchain can be applied in the procurement process at shipyards. Blockchain can be applied in the procurement process at shipyards. This information system feature is used to procure materials and components for the ship reparation. So, a blockchain-based information system can simplify procuring goods at the shipyard to increase the industry's productivity

    Design and Management of Manufacturing Systems

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    Although the design and management of manufacturing systems have been explored in the literature for many years now, they still remain topical problems in the current scientific research. The changing market trends, globalization, the constant pressure to reduce production costs, and technical and technological progress make it necessary to search for new manufacturing methods and ways of organizing them, and to modify manufacturing system design paradigms. This book presents current research in different areas connected with the design and management of manufacturing systems and covers such subject areas as: methods supporting the design of manufacturing systems, methods of improving maintenance processes in companies, the design and improvement of manufacturing processes, the control of production processes in modern manufacturing systems production methods and techniques used in modern manufacturing systems and environmental aspects of production and their impact on the design and management of manufacturing systems. The wide range of research findings reported in this book confirms that the design of manufacturing systems is a complex problem and that the achievement of goals set for modern manufacturing systems requires interdisciplinary knowledge and the simultaneous design of the product, process and system, as well as the knowledge of modern manufacturing and organizational methods and techniques

    Exploring and categorizing maintainability assurance research for service and microservice-based systems

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    Im Laufe des Softwarelebenszyklus eines Programms innerhalb einer sich ständig wechselnden Softwareumgebung ist es wahrscheinlich, dass dieses Programm regelmäßig gewartet werden muss. Wartungen kosten Geld und somit ist es wichtig, dass ebensolche Wartungen effizient und effektiv durchgeführt werden können. Im Laufe der Geschichte der Softwareentwicklung traten unter anderem zwei Architekturmuster hervor: Serviceorientierte Architektur und Microservices. Da diese Architekturmuster ein hohes Maß an Wartbarkeit versprechen, wurden viele Altsysteme hin zu diesen modernen Architekturen migriert. Es kann fatale Folgen für Unternehmen haben, wenn Änderungen an einem System nicht schnell, risikofrei und fehlerfrei umgesetzt werden können. Es wurden bereits viele Forschungsarbeiten bezogen auf die Wartbarkeit von serviceorientierter Architektur publiziert. Systeme basierend auf Microservices fanden jedoch, bezogen auf Wartbarkeitssicherung, nicht viel Beachtung. Sämtliche Forschungsarbeiten befinden sich verteilt auf viele Literaturdatenbanken, wodurch ein umfassender Überblick erschwert wird. Um einen solchen Überblick bereitzustellen, führten wir im Rahmen dieser Bachelorarbeit eine systematische Literaturstudie durch, die sich mit der Wartbarkeitssicherung von serviceorienter Architektur und Systemen basierend auf Microservices beschäftigt. Zur Durchführung dieser systematischen Literaturstudie entwickelten wir eine Reihe von relevanten Forschungsfragen sowie ein striktes Forschungsprotokoll. Aufbauend auf diesem Protokoll sammelten wir insgesamt 223 Forschungsarbeiten von verschiedenen Herausgebern. Diese Arbeiten wurden bezüglich ihres Inhalts zuerst in drei Gruppen von Kategorien unterteilt (architektonisch, thematisch und methodisch). Danach wurden die jeweils relevantesten Forschungsrichtungen aus jeder thematischen Kategorie herausgearbeitet und vorgestellt. Zum Abschluss wurden deutliche Unterschiede der in den Forschungsarbeiten präsentierten Inhalte in Bezug auf serviceorientierte Architektur und Microservice-basierte Systeme herausgearbeitet und dargestellt. Unsere Ergebnisse zeigten eine deutliche Unterrepräsentation von Forschungsarbeiten zur Wartbarkeitssicherung für Microservice-basierte Systeme. Während der Untersuchung der Kategorien konnten wir diverse Forschungsrichtungen innerhalb dieser feststellen. Ein Beispiel hierfür ist die Forschungsrichtung "change impact in business processes" in der Kategorie "Change Impact and Scenarios". Abschließend konnten wir einige Unterschiede bezogen auf die gesammelten Forschungsarbeiten zwischen Systemen basierend auf einer serviceorientierten Architektur und Systemen basierend auf Microservices feststellen. Ein solcher Unterschied kann zum Beispiel in der Kategorie "Antipatterns and Bad Smells" gefunden werden. Im Vergleich zu Forschungsarbeiten, welche sich auf serviceorientierte Architektur beziehen, beinhalten Forschungsarbeiten im Zusammenhang mit Systemen auf Basis von Microservices nur grundlegende Informationen zu Antipatterns, jedoch keine Herangehensweisen, um diese zu erkennen. Aufgrund unserer Ergebnisse schlagen wir einen stärkeren Fokus auf Forschung zur Wartbarkeitssicherung in Microservice-basierten Systemen vor. Mögliche zukünftige Forschungsarbeiten könnten überprüfen, ob Herangehensweisen zur Wartbarkeitssicherung von serviceorientierter Architektur auch bei Microservices anwendbar sind. Darüber hinaus schlagen wir die Durchführung von systematischen Literaturstudien vor, welche Themen wie "runtime adaptation", "testing" und "legacy migration" untersuchen, da diese Themen in unserer Literaturstudie ausgeschlossen wurden.It is very likely that software running in an everchanging environment needs to evolve at multiple points during its lifecycle. Because maintenance costs money, it is important for such tasks to be as effective and efficient as possible. During the history of software development service- and microservice-based architectures have emerged among other architectures. Since these architectures promise to provide a high maintainability, many legacy systems are or were migrated towards a service- or microservice-based architecture. In order to keep such systems running, maintenance is inevitable. While a lot of research has been published regarding maintainability assurance for service-based systems, microservice-based systems have not gotten a lot of attention. All published research is spread across several scientific databases which makes it difficult to get an extensive overview of existing work. In order to provide such overview of maintainability assurance regarding service- and microservice-based systems, we conducted a systematic literature review. To support our literature review, we developed a set of meaningful research questions and a rigid research protocol. Based on our protocol we collected a set of 223 different papers. These papers were first categorized into a threefold set of categories (architectural, thematical and methodical). After that, the most relevant research directions from each thematical category were extracted and presented. Lastly, we extracted and presented notable differences between approaches relating to service-oriented architecture or microservice-based systems. Our findings show a clear underrepresentation of maintainability assurance approaches suitable for microservice-based systems. We further discovered that regarding our formed categories, we could find several research directions such as change impact in business processes in "Change Impact and Scenarios". In the end, we could identify some differences between service- and microservice-based systems concerning approaches we retrieved in this thesis. A difference, for example was that in comparison with papers related to service-oriented architecture in "Antipatterns and Bad Smells", microservices related papers only contained basic information on antipatterns, but no approaches to detect them. Due to our findings we suggest a higher participation in research regarding maintainability assurance for microservice-based systems. Possible future work in this area could include further research on the applicability of service-oriented maintainability assurance approaches or techniques in microservice-based systems. Furthermore, future researchers could conduct follow-up literature reviews and investigate topics such as runtime adaptation, testing and legacy migration, since we excluded such topics from this thesis

    Pristup integraciji tehničkih prostora zasnovan na preslikavanjima iinženjerstvu vođenom modelima

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    In order to automate development of integration adapters in industrial settings, a model-driven approach to adapter specification is devised. In this approach, a domain-specific modeling language is created to allow specification of mappings between integrated technical spaces. Also proposed is the mapping automation engine that comprises reuse and alignment algorithms. Based on mapping specifications, executable adapters are automatically generated and executed. Results of approach evaluations indicate that it is possible to use a model-driven approach to successfully integrate technical spaces and increase the automation by reusing domainspecific mappings from previously created adapters.За потребе повећања степена аутоматизације развоја адаптера за интеграцију у индустријском окружењу, осмишљен је моделом вођен приступ развоју адаптера. У оквиру овог приступа развијен је наменски језик за спецификацију пресликавања између техничких простора који су предмет интеграције. Приступ обухвата и алгоритме за поравнање и поновно искориштење претходно креираних пресликавања са циљем аутоматизације процеса спецификације. На основу креираних пресликавања, могуће je аутоматски генерисати извршиви код адаптера. У испитивањима приступа, показано је да је могуће успешно применити моделом вођен приступ у интеграцији техничких простора као и да је могуће успешно повећати степен аутоматизације поновним искоришћењем претходно креираних пресликавања.Za potrebe povećanja stepena automatizacije razvoja adaptera za integraciju u industrijskom okruženju, osmišljen je modelom vođen pristup razvoju adaptera. U okviru ovog pristupa razvijen je namenski jezik za specifikaciju preslikavanja između tehničkih prostora koji su predmet integracije. Pristup obuhvata i algoritme za poravnanje i ponovno iskorištenje prethodno kreiranih preslikavanja sa ciljem automatizacije procesa specifikacije. Na osnovu kreiranih preslikavanja, moguće je automatski generisati izvršivi kod adaptera. U ispitivanjima pristupa, pokazano je da je moguće uspešno primeniti modelom vođen pristup u integraciji tehničkih prostora kao i da je moguće uspešno povećati stepen automatizacije ponovnim iskorišćenjem prethodno kreiranih preslikavanja

    Specification of interoperability aspects in methodological approaches to IS development.

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    Ova disertacija se bavi problemom specifikacije aspekata interoperabilnosti u metodološkim pristupima za razvoj informacionih sistema. U uslovima opšte globalizacije i savremene saradnje se umesto čvrste integracije teži ka slabom povezivanju organizacionih sistema. Način na koji heterogeni, slabo-povezani sistemi mogu da ostvare efikasne inter-organizacione veze je jedna od aktuelnih tema istraživanja oblasti interoperabilnosti informacionih sistema. Na osnovu analize relevantne literature, imajući u vidu preporuke Advanced Technologies for Interoperability of Heterogeneous Enterprise Networks and their Application (ATHENA) referentnog modela za konceptulnu integraciju, odabrana su tri relevantna aspekta za specifikaciju interoperabilnosti: aspekt procesa, servisa i informacija. U disertaciji se definiše nov specifičan pristup za specifikaciju aspekata interoperabilnosti u metodološkim pristupima za razvoj informacionih sistema. Predloženi pristup je baziran na principima opšteg sistemsko teorijskog modela životnog ciklusa softvera koji ima tri osnovne faze: identifikaciju, realizaciju i implementaciju. Za svaku od faza su precizno definisani opšti koraci i date su preporuke za njihovu primenu. U fazi identifikacije se predlaže da se za specifikaciju inter-organizacionih poslovnih procesa pored funkcionalnog uključi i procesni pogled. U prvom koraku se identifikuju zahtevi za interoperabilnošću koji podrazumevaju specifikaciju: esencijalnih interoperabilnih poslovnih funkcija i poslovnih partnera koji učestvuju u kolaboraciji. Za reprezentaciju kolaborativnog poslovnog procesa je odabrana Business Process Model and Notation (BPMN) notacija. U drugom koraku se definišu opšti dijagrami konverzacije i kolaboracije, dok se u trećem koraku predlaže detaljna specifikacija njihove javne i privatne reprezentacije. U poslednjem koraku faze identifikacije se vrši kreiranje nove ili izbor postojeće referentne ontologije, koja predstavlja osnovu za nedvosmislenu interpretaciju značenja poruka koje se razmenjuju u kolaboraciji.This thesis addresses the problem of specification of interoperability aspects in methodological approaches to information system development. Under the conditions of general globalization and modern cooperation, instead of firm integration there is a tendency towards weak linking of organizational systems. The manner in which weakly linked systems may achieve efficient inter-organizational connections is one of the up-to-date research topics in the information systems' interoperability domain. Based on the analysis of relevant literature and bearing in mind recommendations of the Advanced Technologies for Interoperability of Heterogeneous Enterprise Networks and their Application (ATHENA) reference model for conceptual integration, three relevant aspects were selected for the specification of interoperability, namely: process, service and informations aspects. This thesis defines a new specific approach to specification of interoperability aspects in methodological approaches for informations systems' development. The proposed approach is based on the „System-Theoretic life cycle“ having three fundamental phases: identification, realization and implementation. For each of these phases general steps have been precisely defined and recommendations for their application given. As for the identification phase, for specification of the inter-organizational business processes it is proposed to include the process view in addition to the functional one. The first step identifies interopebability requirements implying specification of the following: essential interoperable business functions and business partners participating in the collaboration. For representation of the collaborative business process Business Process Model and Notation (BPMN) has been selected. The second step defines general conversation and collaboration diagrams, while the x third step proposes a detailed specification for their private and public representation. The last step in the identification phase implies creation of a new or selection of the existing reference ontology representing a basis for an unambiguous interpretation of the meaning of messages being exchanged in scope of the collaboration

    Multikonferenz Wirtschaftsinformatik (MKWI) 2016: Technische Universität Ilmenau, 09. - 11. März 2016; Band II

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    Übersicht der Teilkonferenzen Band II • eHealth as a Service – Innovationen für Prävention, Versorgung und Forschung • Einsatz von Unternehmenssoftware in der Lehre • Energieinformatik, Erneuerbare Energien und Neue Mobilität • Hedonische Informationssysteme • IKT-gestütztes betriebliches Umwelt- und Nachhaltigkeitsmanagement • Informationssysteme in der Finanzwirtschaft • IT- und Software-Produktmanagement in Internet-of-Things-basierten Infrastrukturen • IT-Beratung im Kontext digitaler Transformation • IT-Sicherheit für Kritische Infrastrukturen • Modellierung betrieblicher Informationssysteme – Konzeptuelle Modelle im Zeitalter der digitalisierten Wirtschaft (d!conomy) • Prescriptive Analytics in I

    Migrating relational databases into object-based and XML databases

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    Rapid changes in information technology, the emergence of object-based and WWW applications, and the interest of organisations in securing benefits from new technologies have made information systems re-engineering in general and database migration in particular an active research area. In order to improve the functionality and performance of existing systems, the re-engineering process requires identifying and understanding all of the components of such systems. An underlying database is one of the most important component of information systems. A considerable body of data is stored in relational databases (RDBs), yet they have limitations to support complex structures and user-defined data types provided by relatively recent databases such as object-based and XML databases. Instead of throwing away the large amount of data stored in RDBs, it is more appropriate to enrich and convert such data to be used by new systems. Most researchers into the migration of RDBs into object-based/XML databases have concentrated on schema translation, accessing and publishing RDB data using newer technology, while few have paid attention to the conversion of data, and the preservation of data semantics, e.g., inheritance and integrity constraints. In addition, existing work does not appear to provide a solution for more than one target database. Thus, research on the migration of RDBs is not fully developed. We propose a solution that offers automatic migration of an RDB as a source into the recent database technologies as targets based on available standards such as ODMG 3.0, SQL4 and XML Schema. A canonical data model (CDM) is proposed to bridge the semantic gap between an RDB and the target databases. The CDM preserves and enhances the metadata of existing RDBs to fit in with the essential characteristics of the target databases. The adoption of standards is essential for increased portability, flexibility and constraints preservation. This thesis contributes a solution for migrating RDBs into object-based and XML databases. The solution takes an existing RDB as input, enriches its metadata representation with the required explicit semantics, and constructs an enhanced relational schema representation (RSR). Based on the RSR, a CDM is generated which is enriched with the RDB's constraints and data semantics that may not have been explicitly expressed in the RDB metadata. The CDM so obtained facilitates both schema translation and data conversion. We design sets of rules for translating the CDM into each of the three target schemas, and provide algorithms for converting RDB data into the target formats based on the CDM. A prototype of the solution has been implemented, which generates the three target databases. Experimental study has been conducted to evaluate the prototype. The experimental results show that the target schemas resulting from the prototype and those generated by existing manual mapping techniques were comparable. We have also shown that the source and target databases were equivalent, and demonstrated that the solution, conceptually and practically, is feasible, efficient and correct.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

    Veröffentlichungen und Vorträge 2003 der Mitgleider der Fakultät für Informatik

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