Energy consumption has become a first-class optimization goal in design and implementation of data-intensive computing systems. This is particularly true in the design of database management systems (DBMS), which is one of the most important servers in software stack of modern data centers. Data storage system is one of the essential components of database and has been under many research efforts aiming at reducing its energy consumption. In previous work, dynamic power management (DPM) techniques that make real-time decisions to transition the disks to low-power modes are normally used to save energy in storage systems. In this research, we tackle the limitations of DPM proposals in previous contributions and design a dynamic energy-aware disk storage system in database servers. We introduce a DPM optimization model integrated with model predictive control (MPC) strategy to minimize power consumption of the disk-based storage system while satisfying given performance requirements. It dynamically determines the state of disks and plans for inter-disk data fragment migration to achieve desirable balance between power consumption and query response time. Furthermore, via analyzing our optimization model to identify structural properties of optimal solutions, a fast-solution heuristic DPM algorithm is proposed that can be integrated in large-scale disk storage systems, where finding the most optimal solution might be long, to achieve near-optimal power saving solution within short periods of computational time. The proposed ideas are evaluated through running simulations using extensive set of synthetic workloads. The results show that our solution achieves up to 1.65 times more energy saving while providing up to 1.67 times shorter response time compared to the best existing algorithm in literature. Stream join is a dynamic and expensive database operation that performs join operation in real-time fashion on continuous data streams. Stream joins, also known as window joins, impose high computational time and potentially higher energy consumption compared to other database operations, and thus we also tackle energy-efficiency of stream join processing in this research. Given that there is a strong linear correlation between energy-efficiency and performance of in-memory parallel join algorithms in database servers, we study parallelization of stream join algorithms on multicore processors to achieve energy efficiency and high performance. Equi-join is the most frequent type of join in query workloads and symmetric hash join (SHJ) algorithm is the most effective algorithm to evaluate equi-joins in data streams. To best of our knowledge, we are the first to propose a shared-memory parallel symmetric hash join algorithm on multi-core CPUs. Furthermore, we introduce a novel parallel hash-based stream join algorithm called chunk-based pairing hash join that aims at elevating data throughput and scalability. We also tackle parallel processing of multi-way stream joins where there are more than two input data streams involved in the join operation. To best of our knowledge, we are also the first to propose an in-memory parallel multi-way hash-based stream join on multicore processors. Experimental evaluation on our proposed parallel algorithms demonstrates high throughput, significant scalability, and low latency while reducing the energy consumption. Our parallel symmetric hash join and chunk-based pairing hash join achieve up to 11 times and 12.5 times more throughput, respectively, compared to that of state-of-the-art parallel stream join algorithm. Also, these two algorithms provide up to around 22 times and 24.5 times more throughput, respectively, compared to that of non-parallel (sequential) stream join computation where there is one processing thread.

Denna studie undersöker hur unga organisationer med växtvärk i behov av att hantera samlad kunskap kan hjälpas genom identifiering och utveckling av designprinciper från tidigare forskning om kunskapshantering. Genom att analysera och applicera dessa designprinciper i organisationens kontext har utveckling av en konceptuell modell av en wiki utförts. 8 st designprinciper har legat till grund för utvecklingen av denna artefakt som har utvecklats under kommunikation med en fokusgrupp inom studiemiljön. Arbetet är av tillämpad karaktär där aktionsforskning och därmed iterativa steg med reflektion har bidragit till identifiering och utveckling av designprinciperna samt den konceptuella modellen. Den utvecklade modellen erbjuder exempelvis ett koncept att använda smart länkningsstruktur i wikin för att kunna ersätta behovet av ett separat learning management system för utbildning. Den använder även kontext- och rollbaserad dirigering för att säkerställa att rätt kunskap landar hos rätt person. / This study investigates how a young organization with growing pains in need of managing collective knowledge can be helped through the identification and development of design principles from previous knowledge management research. By analyzing and applying these design principles in the organization's context, development of a conceptual model of a wiki has been carried out. 8 design principles have formed the basis for the development of this artefact, which has been developed in communication with a focus group within the study environment. The work is of an applied nature where action research and thus iterative steps with reflection have contributed to identification, as well as development of the design principles and the conceptual model. The developed model offers, for example, a concept to use a smart linking structure in the wiki to be able to replace the need for a separate learning management system for education. It also uses context- and role-based routing to ensure that the right knowledge lands with the right person

In the era of microservices and cloud-based systems, safeguarding sensitive credentials has become a critical concern for modern businesses. This thesis delves into the application of HashiCorp Vault, a prominent tool for secure secret management, within the domain of telecommunication networks, renowned for managing tens of thousands of nodes. Through a case study approach, this research explores Vault’s core components, security features, and disaster recovery mechanisms, with a specific focus on integrating them into existing telecommunication systems. A thorough examination of technical documentation, academic literature, and industry reports reveals fundamental concepts and best practices in credential management. Additionally, this study provides a comprehensive analysis of the system architecture of telecom management systems, showcasing how HashiCorp Vault’s capabilities bolster security, ensure compliance, and sustain business continuity in large-scale networks. Nevertheless, the thesis also addresses the implications of integrating HashiCorp Vault into the system architecture, including potential challenges tied to complexity and the need for meticulous key management for such extensive credentials. The findings emphasize the necessity of a balanced approach, prioritizing both automation and security. Vigilant monitoring, alerting, and maintenance practices are paramount. As a conclusion, this thesis proposes promising avenues for future research, envisioning the integration of artificial intelligence, machine learning, and blockchain technologies in credential management systems. These advancements hold the potential to further enhance the security landscape for telecommunication networks and beyond. / I en tid präglad av mikrotjänster och molnbaserade system har skydd av känsliga referenser blivit ett kritiskt problem för moderna företag. Denna avhandling fördjupar sig i tillämpningen av HashiCorp Vault, ett framstående verktyg för säker hemlig hantering, inom domänen av telekommunikationsnätverk, känt för att hantera tiotusentals noder. Genom en fallstudiemetod utforskar denna forskning Vaults kärnkomponenter, säkerhetsfunktioner och katastrofåterställningsmekanismer, med ett specifikt fokus på att integrera dem i befintliga telekommunikationssystem. En grundlig granskning av teknisk dokumentation, akademisk litteratur och branschrapporter avslöjar grundläggande begrepp och bästa praxis inom referenshantering. Dessutom ger denna studie en omfattande analys av systemarkitekturen för telekomhanteringssystem, och visar hur HashiCorp Vaults kapacitet stärker säkerheten, säkerställer efterlevnad och upprätthåller affärskontinuitet i storskaliga nätverk. Ändå tar avhandlingen också upp implikationerna av att integrera HashiCorp Vault i systemarkitekturen, inklusive potentiella utmaningar kopplade till komplexitet och behovet av noggrann nyckelhantering för så omfattande referenser. Resultaten betonar nödvändigheten av ett balanserat tillvägagångssätt, som prioriterar både automatisering och säkerhet. Vaksamma övervaknings-, varningsoch underhållsmetoder är av största vikt. Som en slutsats föreslår den här avhandlingen lovande vägar för framtida forskning, som föreställer sig integrationen av artificiell intelligens, maskininlärning och blockchainteknologier i autentiseringssystem. Dessa framsteg har potential att ytterligare förbättra säkerhetslandskapet för telekommunikationsnätverk och vidare.

I identificated of processes in company ENVINET a.s. and made proposal qualification of the efficiency of processes. I applied to indicators of the efficiency of processes. I recommended new possibilities qualification of the efficiency of processes.

Um Sistema de Gestão Integrado (SGI) pode ser entendido como uma abordagem que visa o aprimoramento no desempenho de uma organização por meio do ciclo PDCA, e cujos requisitos podem ser baseados em normas mundialmente conhecidas. Apesar do grande volume de pesquisas que abordam formas de se implantar o SGI, uma minoria o relaciona com a abordagem de processos de negócio, que é também um requisito normativo. Neste contexto, esta pesquisa defende que a abordagem de Gerenciamento por Processos de Negócio (Business Process Management - BPM) pode contribuir significativamente para a implantação efetiva e manutenção de um SGI, já que é uma abordagem que apoia a análise e melhoria dos processos de negócio, aspectos essenciais para a estruturação e gerenciamento de um Sistema de Gestão. Diante deste contexto, este trabalho visa propor um guia com etapas, recomendações e instrumentos de apoio para a implantação e manutenção de um SGI por Processos de Negócio, por meio de revisão da literatura (exploratória e sistemática) e avaliação de especialistas. Para esta pesquisa, considerou-se SGI como a integração das normas ISO 9.001:2015 (Sistema de Gestão da Qualidade) e ISO 14.001:2015 (Sistema de Gestão Ambiental), dada a relevância de ambas no cenário atual dos negócios. Os resultados da Revisão Bibliográfica Sistemática (RBS) mostraram que as pesquisas que abordam a integração entre SGI e BPM ainda são preliminares e que há oportunidades de aprofundamento no tema. Este trabalho visa contribuir para a compreensão, implantação e manutenção dos requisitos do SGI pelas organizações com base na abordagem de Gerenciamento por Processos de Negócio, sob o ponto de vista prático. / An Integrated Management System (IMS) can be understood as an approach that aims to improve organization\'s performance through the PDCA cycle, and whose requirements may be based on globally recognized standards. Despite the large volume of research that addresses ways of implementing an IMS, a minority relates it to the business process approach, which is also a normative requirement. In this context, this research argues that the Business Process Management (BPM) approach can contribute significantly to the effective implementation and maintenance of an IMS, since it supports the analysis and improvement of business processes, essential aspects for the structuring of a Management System. In this context, this work aims to propose a guide with steps, recommendations and support instruments for the structuring and maintenance of a Process-based IMS, through literature review (exploratory and systematic) and expert assessment. For this research, IMS was considered as the integration of ISO 9.001: 2015 (Quality Management System) and ISO 14.001: 2015 (Environmental Management System) standards, given the relevance of both in the current business scenario. The results of the systematic literature review (SLR) have shown that research that addresses the integration between IMS and BPM is still preliminary and that there are opportunities for further study. This paper aims to contribute to the understanding, implementation and maintenance of IMS requirements by organizations based on the business process management approach, in a practical view.

Um Sistema de Gestão Integrado (SGI) pode ser entendido como uma abordagem que visa o aprimoramento no desempenho de uma organização por meio do ciclo PDCA, e cujos requisitos podem ser baseados em normas mundialmente conhecidas. Apesar do grande volume de pesquisas que abordam formas de se implantar o SGI, uma minoria o relaciona com a abordagem de processos de negócio, que é também um requisito normativo. Neste contexto, esta pesquisa defende que a abordagem de Gerenciamento por Processos de Negócio (Business Process Management - BPM) pode contribuir significativamente para a implantação efetiva e manutenção de um SGI, já que é uma abordagem que apoia a análise e melhoria dos processos de negócio, aspectos essenciais para a estruturação e gerenciamento de um Sistema de Gestão. Diante deste contexto, este trabalho visa propor um guia com etapas, recomendações e instrumentos de apoio para a implantação e manutenção de um SGI por Processos de Negócio, por meio de revisão da literatura (exploratória e sistemática) e avaliação de especialistas. Para esta pesquisa, considerou-se SGI como a integração das normas ISO 9.001:2015 (Sistema de Gestão da Qualidade) e ISO 14.001:2015 (Sistema de Gestão Ambiental), dada a relevância de ambas no cenário atual dos negócios. Os resultados da Revisão Bibliográfica Sistemática (RBS) mostraram que as pesquisas que abordam a integração entre SGI e BPM ainda são preliminares e que há oportunidades de aprofundamento no tema. Este trabalho visa contribuir para a compreensão, implantação e manutenção dos requisitos do SGI pelas organizações com base na abordagem de Gerenciamento por Processos de Negócio, sob o ponto de vista prático. / An Integrated Management System (IMS) can be understood as an approach that aims to improve organization\'s performance through the PDCA cycle, and whose requirements may be based on globally recognized standards. Despite the large volume of research that addresses ways of implementing an IMS, a minority relates it to the business process approach, which is also a normative requirement. In this context, this research argues that the Business Process Management (BPM) approach can contribute significantly to the effective implementation and maintenance of an IMS, since it supports the analysis and improvement of business processes, essential aspects for the structuring of a Management System. In this context, this work aims to propose a guide with steps, recommendations and support instruments for the structuring and maintenance of a Process-based IMS, through literature review (exploratory and systematic) and expert assessment. For this research, IMS was considered as the integration of ISO 9.001: 2015 (Quality Management System) and ISO 14.001: 2015 (Environmental Management System) standards, given the relevance of both in the current business scenario. The results of the systematic literature review (SLR) have shown that research that addresses the integration between IMS and BPM is still preliminary and that there are opportunities for further study. This paper aims to contribute to the understanding, implementation and maintenance of IMS requirements by organizations based on the business process management approach, in a practical view.

The purpose of this study was to determine teachers’ perceptions of the relationship of the Katy Management of Automated Curriculum (KMAC) system developed by Katy ISD in Katy, Texas, on planning for learning, delivery of instruction and evaluation of student learning in the classroom. KMAC is a customized, proprietary networked technology curriculum management system created for online access to curriculum and the creation and sharing of lesson plans. Data was collected from 635 teachers district-wide through an online survey. This data was used to determine whether there were differences between/among teachers and teacher leaders and between/among elementary, junior high and high school teachers in their perceived impact of the KMAC on planning for learning, delivery of instruction and evaluation of student learning. Regarding planning for learning, teachers were found to have a moderately positive perception of KMAC with teacher leaders being slightly more positive. In addition, statistically significant differences were found between grade levels with elementary teachers more positive than secondary teachers. Regarding delivery of instruction, teacher leaders again perceived a more positive relationship with KMAC than the teacher non-leaders. Statistically significant differences were also found between elementary and junior high, elementary and high school and between junior high and high school teachers, with elementary teachers being the most positive. Teachers were the least positive toward KMAC and the evaluation of student learning. While a statistically significant relationship was found in relationship to the grade level taught and evaluation, this area was admittedly weaker than the other two areas in district development and teachers’ perceptions. While the position of teacher leader seemed to impact the results in all categories, the grade level taught was found to have the greatest statistical impact on the teacher perceptions.

The graduation theses are elaborated in compliance with the assignment formulated by the VUT Brno FP from 19/2007. A company's strategy, taking into account the mainstreams and trends in the sphere of QMS/EMS and HSMS, has been proposed on the basis of the analysis of the present state of B-projekting, spol.s.r.o. Zlín, with utilization of the latest knowledge, trends, experiences, klient requirements and corporate practise. The strategy solves, above all, the questions connected with the work safety and health protection at work implementation and certification systém according to OHSAS 18001:1999, hereafter the information safety management systém and a conception of the project preparation and implemantation integreated systém.

Im Sinne einer nachhaltigen und ganzheitlichen Firmenentwicklung lässt sich in der Unternehmenslandschaft ein Trend in Richtung einer kontinuierlichen Erweiterung des unternehmerischen Zielsystems beobachten. Neben etablierten Aspekten, wie dem Qualitätsmanagement und der Arbeitssicherheit, erlangen weitere Themen, wie beispielsweise das betriebliche Umwelt- und Energiemanagement, zunehmend an Bedeutung. Um die Berücksichtigung dieser Aspekte nachzuweisen, steht Unternehmen die Möglichkeit zur Zertifizierung nach funktionsspezifischen Managementsystemnormen offen. Die Einführung und Dokumentation entsprechender Managementsysteme erweist sich jedoch als ein zeitintensiver Prozess, dessen Schwierigkeit vor allem in der unternehmensspezifischen Interpretation der allgemein formulierten Normanforderungen liegt. Strebt ein Unternehmen die Zertifizierung nach mehreren Managementsystemnormen an, so eröffnet sich die Möglichkeit zur Integration der Managementsysteme. Allerdings sind auch die Aufgaben der Integration durch verschiedene Herausforderungen gekennzeichnet, die den Bedarf nach einer systematischen Unterstützung verdeutlichen. Im Bereich der Wirtschaftsinformatik haben sich konzeptuelle Modelle als Instrument zur zielorientierten und verständlichen Beschreibung komplexer Informationssysteme etabliert. Entsprechende Modelle können die Durchdringung und Kommunikation komplexer Sachverhalte durch eine zweckmäßige Abstraktion und Strukturierung vereinfachen und eine Überführung in Anwendungssoftware vorbereiten. Für die vorliegende Dissertation leitet sich unter Berücksichtigung dieser Aspekte folgende zentrale Forschungsfrage ab: Wie kann die konzeptuelle Modellierung bei den Aufgaben der Dokumentation und Integration standardisierter Managementsysteme unterstützen? Der Forschungsmethode des Design Science Research folgend, präsentiert die vorliegende Arbeit funktionsspezifische und funktionsunspezifische Artefakte, die bei der Dokumentation standardisierter Managementsysteme und deren Integration modellbasiert unterstützen. Die Anwendbarkeit der Artefakte wird anhand eines realen Anwendungsfalls demonstriert. Die Ausführungen der vorliegenden Arbeit basieren auf einer Analyse der Anforderungen nach ISO 9001 für Qualitätsmanagementsysteme, ISO 14001 für Umweltmanagementsysteme, ISO 50001 für Energiemanagementsysteme, OHSAS 18001 für Arbeitsschutz- und Arbeitssicherheitsmanagementsysteme sowie des durch die Internationale Organisation für Standardisierung veröffentlichten Annex SL.

Bakgrund och problem: Ekonomistyrning måste anpassas till respektive företags förutsättningar. Företag kan tillämpas olika strategier i syfte att uppnå deras vision varav en strategi är outsourcing. Outsourcing innebär att en extern part kontrakteras att utföra en viss aktivitet för en annan organisations räkning. Denna form av struktur får dock inverkan på verksamhetens förmåga att skapa målkongruens eftersom det innebär att även den externa partens målsättningar måste stämma överens med organisationens målsättningar. Ytterligare problematik uppstår när outsourcing tillämpas till flertalet externa organisationer i form av agenter. Problematik i förhållandet mellan agenten och den styrande verksamheten beskrivs i teorin av fenomenet agency theory och dess underliggande antagande om att respektive part kommer att agera utefter sina egna intressen och målsättningar. Att styra en verksamhet till målkongruens under dessa förutsättningar blir därmed komplext. Syfte: Studien ämnar förklara komplexiteten i styrning när outsourcing tillämpas på en avdelning som består av agenter. Utöver detta ska studien också beskriva hur styrning implementeras och vilka styrmedel som appliceras för de olika avdelningarna inom fallföretaget i jämförelse med den outsourcade avdelningen. Studien syftar därmed till att undersöka hur styrning kan utformas för att uppnå målkongruens i en verksamhet inom husbyggnadsbranschen som har valt att tillämpa outsourcing på försäljningsavdelningen.  Metod: Studien har tagit ansats i en kvalitativ forskningsmetod och tillämpat en enfallsstudie som forskningsdesign. Vidare har insamlingen av det empiriska materialet utgått från semistrukturerade intervjuer. Slutsats: Styrning mot målkongruens när outsourcing tillämpas uppnås genom att respektive avdelnings samt individers målsättningar sammanlänkas med organisationens målsättningar, vilket också överensstämmer med vad teorin definierar som tillvägagångssätt för att uppnå målkongruens. I syfte att den externa organisationen ska tillta ett målkongruent beteende bör vinstmaximering ligga till grund för utformningen av eventuell budget och målsättning i den outsourcade verksamheten. / Background and problem: Management control must be adapted to the circumstances of each company. Companies can apply different strategies to achieve their vision, one being outsourcing. Outsourcing means that an external party is contracted to perform a certain activity on behalf of another organization. However, this form of structure has an impact on the business's ability to create target congruence because it means that the external party's objectives must be in line with the organisation's objectives. Further problems arise when outsourcing is applied to multiple external organizations in the form of agents. Problems within the relationship between the agent and the business that controls are described as the phenomenon of agency theory and its underlying assumption that each party will act according to its own interests and objectives. Controlling a business to target congruence under these conditions is thereby complex. Purpose: The study aims to explain the complexity of control when outsourcing is applied to a department that consists of agents. In addition to this, the study will also describe how control is implemented and how control mechanisms are applied to the various departments within the case company in comparison to the outsourced department. The aim of this study is thereby to investigate how control can be designed to achieve target congruence in an activity in the house construction industry that has chosen to apply outsourcing to the sales department. Method: The study has taken a qualitative research and applied a case study as a research design. Furthermore, the collection of the empirical material has been based on semi- structured interviews. Conclusion: Control towards goal congruence when outsourcing is applied is achieved by linking the objectives of each department and individuals with the goals of the organization. This is also in line with what the theory defines as the approach to achieving goal congruence. In order to achieve a goal-congruent behaviour, the external organization should use of profit maximization in every budget and objectives in the outsourced activity.