Mjukvaruföretag idag söker alltid nya metoder för att effektivisera sin utveckling och att förbättra sin produkt. Denna studie undersöker användbarheten av en sådan ny metod kallad repository mining. Inom mjukvaruutveckling är repository mining en metod av kodanalys som utförs för att få ut metadata från ett versionshanteringssystem. Processen utförs med hjälp av ett kodanalysverktyg som i denna studie är verktyget CodeScene. Målet med denna fallstudie är att undersöka vad det finns för användningsfall för repository mining i ett utvecklingssyfte. Studiens syfte är att få förståelse för vilka typer av metadata som är relevanta och vad för faktorer det finns som kan påverka eventuella resultat. Syftet är även att studera om hur repository mining kan hjälpa företag i deras arbete med att öka eller upprätthålla kvaliteten på deras system. Studien utförs i samband med företaget Sandvik Coromant och deras avdelning Machining Foresight för att analysera deras kodbas. Kodbasen analyseras med hjälp av kodanalysverktyget CodeScene för att utvinna metadata som sedan presenteras till utvecklare inom Machining Foresight. Sedan utförs en kvalitativ studie som består av intervjuer och gruppdiskussioner i syfte av att få utvecklarnas reflektioner och tankegångar angående användbarheten av repository mining. Resultatet visar på att det finns användningsfall hos repository mining men dessa kräver att vissa faktorer är bestämda. Första användningsfallet är en analys på ändring i kodkomplexitet som hjälper att förutspå framtida refaktoreringar. Det andra användningsfallet är en analys på författarskap inom systemet för att hitta möjliga platser känsliga för kunskapsförlust, därmed hjälpa i planering av kunskapsdelning. Detta är dock en fallstudie och dessa resultat ska inte användas för att dra generella slutsatser om repository mining i sin helhet. Resultaten ska endast tas som vägriktning och indikation för framtida studier.

This master thesis has been conducted for Hanza Holding AB which is a global company with production facilities grouped into local clusters in proximity to its clients. The company has experienced an increased demand from companies seeking to relocate their production back to their home countries to be closer to their end markets. Hanza’s experience of reversed offshoring, referred as backshoring in the literature, triggered the present investigation.  Offshoring is a widespread business practice among companies in developed countries that have moved production to countries with weaker environmental and social regulations to reduce operational cost. However, it has been achieved at a high environmental, social and operational cost. Backshoring is an emergent trend that has mainly been driven for improving companies’ operational performance. Despite the negative social and environmental consequences that offshoring has had at host countries, neither environmental or social aspects have been considered as the most important drivers when taking backshoring decisions.  In Sweden, companies have been active in offshoring and backshoring. China has been one of the top 3 host regions where manufacturing was moved to and from. Sweden is one of the European countries where manufacturing, especially within the automotive industry, is still of importance for the country’s economy. The country is also considered a forerunner with ambitious environmental policies. These facts made it interesting to investigate if improved sustainability in the supply chain of Swedish offshoring companies could be a backshoring driver if all pillars of sustainability are considered in the decision-making process. Consequently, the present investigation aimed to explore if Sweden provides the conditions to improve the supply chain sustainability of companies in the Swedish automotive industry if offshored manufacturing of steel parts is brought back from China to Sweden. Furthermore, based on the results of the present investigation, the second aim was to provide Hanza with recommendations for how the company could contribute to improved supply chain sustainability.  To achieve the purpose of the study, the Environmental Decision Making framework proposed by Sexton et al. (1999) was applied. The two options to be considered were analyzed by performing a partial life cycle assessment and by applying an own developed method to assess the decision criteria. Later on, the results were analyzed to recommend Hanza measures to improve supply chain sustainability.  The results showed that Sweden has all conditions needed to improve the supply chain sustainability if manufacturing was backshored from China to Sweden. Environmental sustainability could be the most important driver followed by social and economic sustainability. Furthermore, Hanza’s manufacturing cluster strategy could be concluded to improve environmental sustainability in the supply chain by reducing emissions from transport. However, the company could implement several measures to take its contribution to a higher level. / Detta examensarbete har genomförts för Hanza Holding AB som är ett globalt företag med produktionsanläggningar grupperade i lokala kluster i närheten av sina kunder. Företaget har upplevt en ökad efterfrågan från företag som vill flytta tillbaka sin produktion till sina hemländer för att komma närmare sina slutmarknader. Hanzas erfarenhet av omvänd offshoring, även kallad backshoring i litteraturen, var utgångspunkten för detta arbete. Offshoring är en utbredd affärspraxis bland företag i utvecklade länder som harflyttat produktionen till länder med svagare miljömässig och sociallagstiftning för att minska sina kostnader. Detta har dock uppnåtts till en hög miljömässig, social och operativ kostnad. Backshoring är en framväxande trend som främst har drivits på för att förbättra företags operationella prestation. Trots de negativa sociala och miljömässiga konsekvenser som offshoring har haft i värdländerna,har varken miljö eller sociala aspekter ansetts vara de viktigaste drivkrafterna vid beslut om backshoring. I Sverige har företag varit verksamma både inom offshoring och backshoring. Kina har varit en av de tre främsta regionerna där tillverkningen har flyttats till och från. Sverige är ett av de europeiska länder där tillverkning,särskilt inom fordonsindustrin, fortfarande anses vara av betydelse för landets ekonomi. Landet anses också vara en föregångare med ambitiös miljöpolitik. Dessa fakta gjorde det intressant att undersöka om förbättrad hållbarhet i leverantörskedjan skulle kunna vara en drivkraft för företag om alla tre hållbarhets pelare beaktas i beslutsprocessen. Av denna anledning var målet med denna studie att undersöka om det finns förutsättningar i Sverige för att förbättra hållbarheten i leveranskedjan hos företag inom den svenska fordonsindustrin om tillverkning av stål artiklar flyttades från Kina till Sverige. Det andra syftet var att ge Hanza rekommendationer för hur företaget skulle kunna bidra till en förbättrad hållbarhet i leverantörskedjan. Huvudmetoden för att uppnå syftet med studien var ett tillvägagångssätt för att ta miljöbeslut framtaget av Sexton et al. (1999). De två alternativ som skulle övervägas analyserades genom att utföra en partiell livscykelanalys och genom att tillämpa en egenutvecklad metod för att bedöma beslutskriterierna. Senare analyserades resultaten för att ge Hanza rekommendationer för att förbättra hållbarheten i försörjningskedjans. Resultaten visade att Sverige har alla förutsättningar som behövs för att förbättra hållbarheten i leveranskedjan om tillverkningen flyttas tillbaka till Sverige från Kina. Miljömässig hållbarhet kan vara den viktigaste drivkraften följt av social och ekonomisk hållbarhet. Därutöver, drogs slutsatsen att Hanzas lokala klusterstrategi skulle kunna förbättra miljömässig hållbarhet i leveranskedjan genom att minska utsläppen från transporter. Företaget skulle dock kunna genomföra flera åtgärder för att ta sitt bidrag till en högre nivå.

Network packet traces, despite having a lot of noise, contain priceless information, especially for investigating security incidents or troubleshooting performance problems. However, given the gigabytes of flow crossing a typical medium sized enterprise network every day, spotting malicious activity and analyzing trends in network behavior becomes a tedious task. Further, computational mechanisms for analyzing such data usually take substantial time to reach interesting patterns and often mislead the analyst into reaching false positives, benign traffic being identified as malicious, or false negatives, where malicious activity goes undetected. Therefore, the appropriate representation of network traffic data to the human user has been an issue of concern recently. Much of the focus, however, has been on visualizing TCP traffic alone while adapting visualization techniques for the data fields that are relevant to this protocol's traffic, rather than on the multivariate nature of network security data in general, and the fact that forensic analysis, in order to be fast and effective, has to take into consideration different parameters for each protocol. In this thesis, we bring together two powerful tools from different areas of application: SiLK (System for Internet-Level Knowledge), for command-based network trace analysis; and ComVis, a generic information visualization tool. We integrate the power of both tools by aiding simplified interaction between them, using a simple GUI, for the purpose of visualizing network traces, characterizing interesting patterns, and fingerprinting related activity. To obtain realistic results, we applied the visualizations on anonymized packet traces from Lawrence Berkley National Laboratory, captured on selected hours across three months. We used a sliding window approach in visually examining traces for two transport-layer protocols: ICMP and UDP. The main contribution of this research is a protocol-specific framework of visualization for ICMP and UDP data. We explored relevant header fields and the visualizations that worked best for each of the two protocols separately. The resulting views led us to a number of guidelines that can be vital in the creation of "smart books" describing best practices in using visualization and interaction techniques to maintain network security; while creating visual fingerprints which were found unique for individual types of scanning activity. Our visualizations use a multiple-views approach that incorporates the power of two-dimensional scatter plots, histograms, parallel coordinates, and dynamic queries. / Master of Science

Denna kandidatuppsats syftar till att ge insiktsfulla perspektiv på fenomenet järnvägsrelaterade bränder i Sverige. Syftet med denna studie är, genom dataanalysmedel, att utforska i vilken utsträckning tillåtna tåghastigheter, spårens lutning och omgivningen påverkar frekvensen av startade bränder i hela det svenska järnvägssystemet. Geografiska informationssystem (GIS) möjliggör denna studie genom utförandet av analyser över järnvägsnätet i sofistikerade dataprogram. Trafikverket och Myndigheten för samhällsskydd och beredskap (MSB) har levererat statistisk och geografiska data som är av yttersta betydelse för genomförandet av denna studie. Kvantitativa metoder och rumsliga analyser används för att undersöka hur sambandet mellan järnvägsrelaterade bränder och en rad yttre faktorer ser ut i Sverige. Resultatet som härstammar från denna studie tyder på ett kausalt samband mellan den största tillåtna hastigheten vid järnvägssträckor och frekvensen rapporterade bränder. Även ett varmare väder i allmänhet, och låg nederbörd i synnerhet, visar ett starkt samband med förekomsten av bränder. Det finns ett svagare samband mellan lutningen på järnvägsspåren och frekvensen rapporterade bränder. Denna studie baseras på rapporterade bränder, det är möjligt att det kan finnas bränder som inte observerats och rapporterats som kan påverka resultatet.

Made available in DSpace on 2017-07-21T14:19:28Z (GMT). No. of bitstreams: 1 Bruna Rossetto Delazeri.pdf: 4632056 bytes, checksum: 7b23d649c1cebd3b01425d6b2a960ae9 (MD5) Previous issue date: 2015-03-15 / Asian soybean rust caused by Phakopsora pachyrhizi, is one of the main phytosanitary problems of soybean in Brazil. Aiming to reduce the losses caused by the pathogen, the treatment of soybean seeds with fungicide fluquinconazole has motivated researchers to conduct studies and simulate their performance. The compilation of these various studies may be conducted by the meta-analysis, which is a probabilistic technique that produces a result which summarizes studies. In agricultural context, meta-analysis is used to perform empirical estimates of technical efficiency for the development of productivity and economic research of agriculture, such as the use of the fungicide fluquinconazole. Meta-analysis can be applied through existing software such as R, run through commands, and WMA, which operates through a graphical user interface for data entry made by the user. The results generated by both software are shown in graphical form without providing interactivity with the user, neither reproducing a friendly software and easy to understand interface. This study applied meta-analysis using the WMA Software, which uses R to calculate the statistical results, to determine the efficiency of fungicide fluquinconazole in soybean seed, used to minimize the impact of the asian rust disease in the crop productivity. To provide a dynamic display of obtained results by meta-analysis, this study created a method to identify the best information visualization technique to represent hierarchical data. This method was applied to identify which better visualization technique represented the graphic forest plot, namely, bifocal tree. Changes were made at the WMA, such as: incorporation of a new effect measure, change in the help system and font files and the implementation bifocal tree technique using Gephi as a support tool. The implementation allowed to create a more interactive environment for analyzing the results of the R and provides two display options for the user: basic and advanced. The advantages of the visualization are that the user can explore more the data and results. In this study it was observed that when fluquinconazole was used to minimize the effects caused by rust soybean productivity (yield) was improved. / A ferrugem asiática da soja, causada pelo fungo Phakopsora pachyrhizi, é um dos principais problemas fitossanitários da cultura da soja no Brasil. Visando diminuir os prejuízos causados pelo patógeno, o tratamento das sementes de soja com o fungicida fluquinconazol tem motivado pesquisadores a realizar estudos e simular seu desempenho. A compilação destes vários estudos pode ser realizada através da metanálise, que é uma técnica probabilística que produz um resultado que resume os estudos. No âmbito agrícola a metanálise é utilizada para realizar estimativas empíricas de eficiência para o desenvolvimento da produtividade e investigação econômica da agricultura, como é o caso do uso do fungicida fluquinconazol. A metanálise pode ser aplicada por meio de software existentes como por exemplo o R, executado através de comandos, e o WMA (Wizard Metanálise), que opera através de um interface gráfica para entrada de dados feita pelo usuário. Os resultados gerados por ambos são exibidos em forma gráfica sem proporcionar interatividade com o usuário, tampouco reproduzem uma interface amigável e de fácil compreensão. Este trabalho aplicou a metanálise através do WMA, que utiliza o R para o cálculo dos resultados estatísticos, para determinar a eficiência do fungicida fluquinconazol na semente da soja utilizada para minimizar o impacto causado pela doença da ferrugem asiática na produtividade da cultura. Para proporcionar uma visualização dinâmica dos resultados obtidos pela metanálise este trabalho criou um método de identificação da melhor técnica de visualização de informação para representar dados hierárquicos. Este método foi aplicado para identificar qual técnica de visualização melhor representava o gráfico forest plot, a saber, bifocal tree. Mudanças foram realizadas no WMA tais como: incorporação de uma nova medida de efeito, mudança no sistema de ajuda e dos arquivos fontes e adição da técnica bifocal tree usando como ferramenta de apoio o Gephi. A implementação permitiu criar um ambiente mais interativo para análise dos resultados obtidos pelo R e fornece duas opções de exibição para o usuário: básica e a avançada. As vantagens da visualização é que o usuário consegue explorar mais os dados e resultados. Neste trabalho observou-se que houve um ganho na taxa de produtividade da soja com a utilização do fluquinconazol, para minimizar os efeitos causados pela ferrugem.

This thesis analyses tools for mobile web portal logs processing which could be used for reporting of required metrics. The area covers not only web analytics, but also mobile web and mobile handsets capabilities. The objective is to analyze possibilities of existing products which can be used to process web logs and choose appropriate existing or propose proprietary solution. This solution should comply with requirements and limitations given by the portal platform limitations. Theoretical part introduces the web analytics domain and the mobile web environment. Basic concepts and metrics are described as well as the fundamental data collection methods and mobile internet basic specifics. The knowledge of the web analytics and mobile web basics are crucial to be able to eruditely assess the tools capabilities introduced in the second part of this thesis. In the practical part, there are technical details on the mobile portal operating environment described. The requirements for the tool outputs are defined there and the prospective ready-to-use solutions are researched. The final part of the text addresses the final solution for the mobile portal reporting tool including the operational data processing. The secondary output of this thesis comprises of explanation of the mobile web analytics area for the broader audience. The main output of the practical part is analysis and specification of the requirements for mobile portal reporting tool and design of the solution with the supervision of the implementation and deployment within the production environment.

Historically, transportation asset management has focused on roadways and bridges, but more recently, many agencies are looking to extend their programs to ancillary assets such as traffic signs and guardrails. This thesis investigates the state of practice of managing these assets in order to assess the data and system needs for successful program implementation, and further reviews the opportunities for making a business case for formal management procedures based on quantified benefits of managing ancillary assets. The asset classes, selected from a review of asset management literature, include culverts, earth retaining structures, guardrails, mitigation features, pavement markings, sidewalks and curbs, street lights, traffic signals, traffic signs and utilities and manholes, with data as an information asset. Findings from a literature review showed that a number of agencies have made substantial efforts to manage their ancillary transportation assets; however, methods and practices vary. Specific state and municipal agencies identified from the literature review were surveyed for further details on their practices. The survey results show significant knowledge gaps in data collection cost estimates, and cost savings from the implementation of a transportation asset management program for ancillary assets. Finally, this work evaluates the opportunities to quantify the benefits of ancillary transportation asset management, indicating several challenges due to a lack of the data needed. The results obtained highlight the current state of practice, revealing opportunities and challenges for improving the management of ancillary transportation assets.

Baigiamajame darbe išnagrinėtas internetinių socialinių tinklų tyrimo procesas bei tam skirti įrankiai. Darbo pagrindą sudaro trys dalys, kuriose: apžvelgti populiariausi internetiniai socialiniai tinklai, jų realizavimo technologijos; išanalizuotas internetinių socialinių tinklų tyrimo procesas, pasiūlytas trijų etapų tyrimo modelis, apžvelgti kiekviename etape naudotini įrankiai; taip pat pateikiama pasiūlyto modelio realizacija „PERL“ programavimo kalba, analizuojanti socialinio portalo „Twitter“ duomenis ir sugebanti pateikti trijų tipų ataskaitas. Darbą sudaro 6 dalys: įvadas; internetiniai socialiniai tinklai; internetinių socialinių tinklų tyrimo proceso modelis, tyrimo įrankiai; internetinių socialinių tinklų tyrimo modelio realizavimas; išvados; literatūros sąrašas. Darbo apimtis – 61 p. teksto be priedų, 28 iliustr., 2 lent., 18 bibliografiniai šaltiniai. Atskirai pridedami darbo priedai. / The research theme of this master’s final work is social-networking analysis process and tools relevant to it. The framework of this thesis consists of three parts: an overview of the most popular online social networks and their implementation technologies; a research on social-networking analysis process with a three-stage model proposed, all stages and tools relevant to them analyzed; also, implementation of the proposed model, written in “PERL” programming language, able to analyze a social portal named "Twitter", also able to provide three types of reports. Structure: introduction; social-networking; social-networking analysis process model, analysis tools; social-networking analysis process realization; conclusions, references. Thesis consists of: 61 p. text without appendixes, 28 pictures, 2 tables, 18 bibliographical entries. Appendixes included.

We are in the era of multicore machines, where we must exploit thread level parallelism for programs to run better, smarter, faster, and more efficiently. In order to increase instruction level parallelism, processors and compilers perform heavy dataflow analyses between instructions. However, there isn’t much work done in the area of inter-thread dataflow analysis. In order to pave the way and find new ways to conserve resources across a variety of domains (i.e., execution speed, chip die area, power efficiency, and computational throughput), we propose a novel framework, termed Contech, to facilitate the analysis of multithreaded program in terms of its communication and execution patterns. We focus the scope on shared memory programs rather than message passing programs, since it is more difficult to analyze the communication and execution patterns for these programs. Discovering patterns of shared memory programs has the potential to allow general purpose computing machines to turn on or off architectural tricks according to application-specific features. Our design of Contech is modular in nature, so we can glean a large variety of information from an architecturally independent representation of the program under examination.

Le développement industriel important, le fort accroissement démographique, l'urbanisation intensive, l'expansion des trafics de transports routiers, aériens et maritimes, sont tout autant de facteur contribuant à l'épuisement des ressources planétaires, du foncier et au dérèglement climatique. Faire face aux émissions de gaz à effet de serre et aux autres impacts environnementaux se résume le plus souvent à la conduite d'une politique complémentaire couplant les 3 piliers stratégiques du développement durable : environnement, économie et social. Une normalisation des principes de développement durable est difficile à clarifier, elle dépend du contexte et des objectifs d'un pays ou du territoire d'étude impliqué. La transition énergétique et écologique nécessite un référentiel d'éco-aménagement adapté aux spécificités et aux enjeux des espaces concernés. Ces travaux contribuent à accompagner l'aménagement d'un site en milieu périurbaininsulaire, autour d'activité des secteurs primaires, secondaires, tertiaires et résidentiels.Dans ce cadre, plusieurs outils d'analyse ont été développés pour répondre aux exigences d'un éco-aménagement, à partir notamment des analyses techniques, environnementales et de l'évaluation globale d'un éco-aménagement. Ces outils développés permettent aux acteurs d'aménagement du territoire et de construction d'espaces bâtis, d'analyser les bilans d'impacts environnementaux d'un projet et d'évaluer différentes alternatives d'aménagement. Au delà des outils d'aide à la décision, il est proposé dans cette thèse, une démarche méthodologique basée sur l'approche systémique et typologique et le cadre normatif ISO 14044 relatif à l'Analyse de Cycle de Vie. / Significant industrial development, strong population growth, intensive urbanization,expansion of road, air and sea transports are all factors that contribute to the exhaustion of natural resources, land and climate change. The combination of the 3 strategic pillars of sustainable development : environment, economy and social, in the deployment of complementary policies contributes to the reduction of greenhouse gases emissions and environmental impacts.The standardization of the sustainable development principles is difficult to implement. It depends on the context of a the studied country or territory. The ecological and energy transition requires a eco-mangement frame of reference adapted to the specificities and stakes of the concerned territories. This work contributes to the development of a surburban site in a tropical islandenvironment, around activities in the primary, secondary, and tertiary sectors. In this context, several analysis tools have been developed to meet the requirements of an eco-management scheme, including technical and environmental analyzes and the overall evaluation of an eco-management scheme. These tools provide local and regional actors to analyze the environmental impacts of a project and to evaluate different development alternatives. In addition to the decision-supporttools, a methodological approach is proposed in this thesis, based on the systemic and typological approaches and the ISO 14044 normative framework relating to Life Cycle Assessment.