Vetenskapens kommunikation och lärande (CLS) // Communication and Learning in Science (CLS)
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Vi forskar och utbildar inom språk, kommunikation, ingenjörsutbildningsvetenskap och strategisk publicering. Vi erbjuder verktyg för vetenskaplig kommunikation och stödjer forskare, lärare, studenter och ledare i val av bland annat pedagogiska metoder, publiceringssätt och informationskällor. Våra biblioteksmiljöer skapar öppna mötesplatser för alla.
För forskning och forskningspublikationer, se https://research.chalmers.se/organisation/vetenskapens-kommunikation-och-laerande//
We conduct research and training in language, communication, engineering education research and strategic publishing. We offer tools for scientific communication and support researchers, teachers, students, and managers in choosing teaching methods, publishing methods and information sources. Our library environments create open meeting places for everyone.
Studying at the Department of Communication and Learning in Science.
For research and research output, please visit https://research.chalmers.se/en/organization/communication-and-learning-in-science/
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- PostGroup Modeling in System Dynamics - a Case Study(2004) Holmström, Paul; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)A group modeling process, using system dynamics, is used to model a stroke ward. The purpose is to model quantitative and qualitative factors useful in room planning and dimensioning and to contribute to research studying the usefulness of simulation modeling as a planning tool in the design of new health care environments. The process is carried out within tight constraints on time and resources, while striking a balance between developing the group process and achieving a model. The group is intended to be representative consisting of different interested parties and is too large to benefit a good group process. Participants have different agendas and there is ambiguity of problems and goals. The challenge is to develop a model within the resource constraints and yet meaningful to the stakeholders, by using process consultation methodology. The modeling moves from basic causal loops to a model of patient flows. The difference between discrete and continuous modeling raises the issue of possible causes of goal erosion. Getting access to data turns out to be a major problem and in the end limits the scope and usefulness of the models. A “flight simulator” is constructed for testing policies to attain optimal dimensioning of the ward
- PostA Webpage Structure Processing Algorithm - Extending the Page Tailor Toolkit(2007) Andrén, Lars; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)Research in user preference-based automatic processing on the web, web page content adaptation for a small screen and informative value of web pages have resulted in the design and implementation of an algorithm, called the Domain Heritage-algorithm. This algorithm extends the functionality of the Page Tailor toolkit; a program that is the result of C-Y Tsai’s thesis “Web Page Tailoring Tool for Mobile Devices”. The algorithm extending the toolkit enables automatic processing of web pages where preferences on which parts to be displayed have not been stored. The Domain Heritage-algorithm will not work unless at least one web page of the specific domain visited has been personalised previously. This extended toolkit has then been tested on ten subjects and a number of web sites. The test results were pretty much in accordance with the expectations, but the test subjects’ experience in using the Page Tailor toolkit was found to be quite influential on the rate of successful running of the algorithm. Three major conclusions are made. The first one is that too much editing of the appearance of web page content can result in loss of informative value and successful totally automatic extraction of web page content needs semantic processing. Further, XPaths has been a good choice of data for the algorithm to process as the results of the Big Oanalysis of the running time were acceptable, and that it was possible to implement the algorithm in the existing software. Finally, previous experience in usage of the Page Tailor toolkit, as well as more than one personalised web page is essential to the successful running of the Domain Heritagealgorithm.
- PostAutomatic detection of images containing nudity : Image detection using artificial neural networks and statistical methods(2008) Carlsson, Andreas; Eriksson, Andreas; Isik, Mikael; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)This thesis discusses the possibilities of detecting images containing nudity using computer algorithms. We are only focusing on sexually explicit images. Our approach is to extract features such as skin, faces and regions, which can be used to classify images. We have investigated the advantages of the two color spaces RGB and IHLS when detecting skin. The difference in performance between the two, are illustrated in ROC graphs. The technology used is artificial neural networks, statistical methods and advanced image processing. Artificial neural networks are used for skin pixel segmentation, face detection, and image classification. Gaussian mixture models have been tested, but was too computationally heavy and was also outperformed by artificial neural networks. The separate parts performs well, but our approach using an artificial neural network with features as input does not perform as well as expected in its current state, and needs some modifications, which are proposed in the section future work. The research problem was proposed by NetClean Technologies Sweden AB.
- PostThe Intelligent Mobile Office for IT-support on Large Onshore Plants - An ethnographic research searching for solutions that will do the process plants in the oil and gas industry more intelligent in the future(2008) Linger, Camilla; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)The oil and gas industry is a large industry in the world and the oil and gas industry has a history, since 347 A.D. The oil and gas industry generates a lot of money and has been a reason for world conflicts. Many people associate the oil and gas industry with high risk, hazardous working environments. Plant employees receive generous remuneration because of this inherent risk. One of StatoilHydro’s goals for many years is to have zero accidents and damages at their plants. Research is being carried out to towards meeting this goal, with some results already implemented. Since 2006, StatoilHydro has run a large research project in “Integrated Operation (IO)”. One of the sub-projects is “wireless communication and wireless sensors” which also includes research in “intelligent environments”. “Intelligent environments” is a quite a new and interesting concept. The purpose of this research is to explore if a process plant can be made more intelligent and how this might be accomplished? During the investigation stage, semi standardised interviews were hold with nine persons who work with different working tasks in StatoilHydro, two seminaries were visited and participant observations were done during 8 days at Tjeldbergodden, divided in 3 periods. From this data ideas were generated. One of the ideas was of more interest to StatoilHydro, which was consequently analysed in depth. This idea was to increase the use of the cars which the operators at onshore plants use for transport. Thus, this research enters the subject of mobile ICT (Information and Communication Technologies) and will answer the questions: What will a mobile office in a car look like? How can the car as a mobile office (with mobile devices) be of assistance to the operators, especially in geographically distributed onshore well and processing facilities? How will the car as a mobile office influence the safety level at the plants? A detailed study was done for one potential use scenario, examining, how the car as mobile office might improve in the W.P (work permit) process. The result of the research was that plants can be done more intelligent using the ideas and findings which are presented in this paper. To have the possibility to implement a mobile office in cars at onshore plants, the plants first need to a get wireless network solution. A mobile office will generate lot of benefits to the operators at the plants, the greatest one will probably be time saving (less unnecessary travels). This paper will present how the research was conducted, to answer the research question ”How can a process plant be made more intelligent?”, its results, as well as background information regarding the oil and gas industry, intelligent environments and wireless technologies.
- PostTool-Supported Timing Analysis of Automotive Embedded Systems(2009) Behera, Madhumita; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)TIMMO Project aimed to develop a Domain specific Modeling language for handling timing information while developing automotive distributed embedded systems. Hence timing analysis becomes an obvious step in the validation phase of TIMMO results i.e. TADL, the modelling language and TIMMO methodology, guidelines for using this language. To facilitate timing analysis process, a tool survey was conducted followed by tool inventory in order to have a selection of most suitable tools that are currently available for timing analysis. A validator system, basically an automotive embedded system was developed to validate the TIMMO results at Volvo Technology. This validator system was modeled with the timing properties using one of these selected tools. The timing models thus created defined the validator system with timing information associated with it and were analysed to study the behaviour of its timing properties. A set of structured steps were defined in the form of heuristics to be followed while modeling such automotive embedded systems along with their timing information. These steps were applied to two different abstraction levels of timing model of the validator system. A timing information flow analysis was also conducted for the different tools involved in defining the validator system in order to find out the possibility of transferring the timing information from one tool to another. By developing a parser in java, it was studied that the timing information defined for modeling an automotive system in one tool can be extracted and can be restructured to model it in another tool.
- PostAn Anthropomorphic Solver for Raven's Progressive Matrices(2010) Cirillo, Simone; Ström, Victor; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)This report describes a computer program for solving Raven's Progressive Matrices (RPM), a multiple choice test of abstract reasoning introduced by Dr. John C. Raven in 1936. Each RPM problem consists of a grid (or matrix) of 2x2 or 3x3 cells with graphical content, where the cell content in the bottom right corner is omitted; the solver's task is to pick the missing content from a set of eight solution candidates. We argue these problems are not only mathematical, but also psychological in nature. Due to this and other considerations such as algorithmic transparency, the program makes use of a simple cognitive model. The program solves RPM problems in a fully automatic fashion, without taking the solution candidates into account. The input is an RPM problem represented as a vector graphics file; the output is a complete or partial solution for the missing entry, represented in the same format. Internally we use multi-layered structures which enable the perception of the problems' different organizational levels. The program was tested on sections C, D and E of the Standard Progressive Matrices(SPM) and produced correct solutions for 28 of the 36 considered problems
- PostValanlys.se: A Graphical Trend Analysis Tool - Visualizing Political Trends From Semantically Analyzed Twitter Posts(2010) Scherstén, Fredrik; von Tell, Niklas; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)The Internet has during a relatively short period of time changed people’s perception on information and its availability. It has never before been so easy to get information about practically anything, just a few clicks away. The problem today is that we are living in a society with an information overflow, it can be really time consuming finding relevant facts in the ocean of data. A young entrepreneurial company, Saplo AB, thought of a solution: let the computers find whats relevant for us and save us both time and effort. They created a highly advanced algorithm that works in a similar fashion to the human brain. With the algorithm computers can now read, understand and sort text. Saplo has so far only focused their services toward other companies but now they want to show the rest of the world that their technique is capable of. This master thesis aims to provide Saplo with a platform for information visualization, a tool to visually present the result of their technology. To narrow down the work, the Swedish election was chosen as the subject for this master thesis. What it tries to answer is: "How to create a real-time feedback system for the political environment with automated trend-analysis?" The master thesis goes through all necessary steps to complete this visualization tool from research to implementation and testing. The project results in a fully functional website that gathers tweets (messages) from Twitter that are related to the Swedish election. All the tweets are sent to Saplo to be analyzed and are there given a trend index. They are then forwarded to the website and presented in real-time. The trend index is used to draw a trend for the political party that the tweet is concerning. The master thesis also discusses possible improvements and interesting ideas for further development. Internet har på relativt kort tid förändrat vår syn på information och dess tillgänglighet. Det har aldrig tidigare varit så enkelt att få tag på information om praktiskt taget vad som helst, bara några mus-klick bort. Problemet är snarare att vi i dagens samhälle drunknar i för mycket information, tiden läggs istället på att sortera ut relevant information. Ett ungt entreprenörsmässigt företag, Saplo AB, har kommit på en lösning: låta datorerna hitta vad som är relevant information och spara oss både tid och ansträngning. Saplo skapade en högst komplex algoritm som arbetar på ett liknande sätt som den mänskliga hjärnan. Med denna algoritm kan datorer nu läsa, förstå och sortera text för oss. Saplo har än så länge endast fokuserat sin service mot andra företag men nu ville de ta steget att visa världen vad deras teknik är kapabel till. Examensarbetet försöker tillhandahålla Saplo en plattform för informations visualisering, ett verktyg för att visuellt presentera resultatet av deras teknologi. För att begränsa arbetet till en rimlig nivå, valdes det svenska valet som ämne för detta examens arbetet. Examensarbetet vill besvara frågeställningen: "Hur skapar man ett real-tids feedback system för politiska klimatet med automatiska trendanalyser?". Vi går igenom alla nödvändiga faser i utvecklingen, från undersökning till implementering och testning. Projektet resulterade i en fullt fungerande hemsida som samlar in tweets (meddelanden) ifrån Twitter som är relevanta till det Svenska valet. Alla tweets skickas till Saplo för att bli analyserade och ges där ett trendindex. Därefter skickas de vidare till hemsidan för publicering i realtid. Tweetets tillhörande trendindex används för att rita upp en trend för det parti som tweetet nämnde. Examensarbetet kommer även ta upp en diskussion angående förbättringar och förslag på framtida förändringar.
- PostAnthropomorphic Proof System for First-Order Logic(2010) Nizamani, Abdul Rahim; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostA General Method to Solve Numerical Sequence Puzzles(2011) Amirghasemi, Mehrdad; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostTraffic Control with Standard Genetic Algorithm. A simulated optimization control of Traffic Intersection(2011) Jansson, Gustaf; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostSorting batteries with deep neural networks - using deep belief networks and convolutionary neural networks for image classification.(2011) Johansson, Rasmus; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostSocial media data mining and inference system based on sentiment analysis(2011) Sufian, Ana; Anantharaman, Ranjith; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostInterface for a Railway Control System(2011) Sanaei, Monireh; Abdi Azandaryani, Akbar; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostSensor calibration for autonomous mine vehicles - Calibration of laser scanners and hinge angle sensor(2011) Olofsson, Magnus; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostEfficient Features for Visual Objects Classification(2011) Ghafarinia, Azadeh; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostSupporting Embedded Systems Development - Tool Support for EAST-ADL import of Modelisar FMU(2011) ÇAVDAR, SELÇUK; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostCollaborative web application design and development(2011) Triganon, Albert; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostUsing CSP solvers for Partial Configuration in Automotive Configuration Problems(2011) Sachenkova, Oxana; Keshari Thapaliya, Suvash; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)
- PostDevelopment of a system for X-ray analysis within the mining industry(2012) Estrada Calderon, Efrain; Zagerholm, Isac; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)Companies within the mining industry perform exploration drilling (prospecting) in order to find new mineral resources. The prospecting results in a lot of rock samples which are analyzed to discover what minerals they may contain. Today's analysis process involves high investments, high risks, and is very time inefficient. A start-up company called Minalyze is developing a product that will be capable of analyzing rock samples using X-ray.The product will be used at the drill site, and will involve much lower investments and very short analysis times.The purpose of this thesis is to design and develop Minalyze's first functional prototype called Minalyzer SCS. The aim is to implement different hardware components into a device that follows a concept which Minalyze has developed. Furthermore, a software architecture for controlling the hardware with a PLC will be developed, as well as a software architecture for controlling the PLC, from a PC, using LabView. During this thesis a partial vertical prototype was developed. The required hardware components required were identified, and a safety system was implemented. The PLC software, which consist of a series of programs and functions that control the actuators and performs data acquisition, was developed. Finally, for the software in LabView, a layered system design was used, together with an OPC system for exchanging data between the PLC and LabView. This thesis shows the importance of developing a prototype in an early stage of a product development process, for optimizing the product based on feedback received from investors,clients, and the development team. Prototyping also helps increasing the value of a start-up company. The result of the thesis is that Minalyze now owns two functional SW architectures, in LabView and the PLC, and functional hardware, ready to be implemented with a graphical user interface. When the company has completed the remaining drivers for the X-ray generation components (including a high-voltage generator and a X-ray detector), and developed the graphical user interface, the prototype will be ready to be shown for investors and customers. It will greatly aid Minalyze in the development of their final product.
- PostDistributed Simulations of Automotive Related Real-Time Systems Using the High Level Architecture Standard(2012) Jakobson, Ola; Chalmers tekniska högskola / Institutionen för tillämpad informationsteknologi (Chalmers); Chalmers University of Technology / Department of Applied Information Technology (Chalmers)In this project, the standard High Level Architecture (HLA) has been used in the area of automotive related distributed simulation systems. The purpose was to evaluate the possibility to use HLA for verification of such systems. This has been performed by building and evaluating three different prototypes. The simulation members, federates, of the prototypes had real-time requirements with guidelines of being able to exchange data corresponding to an amount of 10 000 bits, within 10 ms and with an update period of 10 ms. The first prototype involves federates transferring data between two Hardware-In-the-Loop (HIL)-simulators from dSPACE. The second and third involve federates executing in MATLAB and Simulink, respectively. The results of the prototypes indicate that it most likely is possible to use HLA in such simulation systems. However, the amount of work needed to make everything function varies from case to case and sometimes tend to be relatively high. Regarding the distributed data being sent between federates, the wanted way would be to pack data into containers of small size. Doing this would result in the federates being able to only receive the data they are actually interested in. However, handling a large amount of small size containers with data within a short time period is very computationally demanding. Thus,in order to succeed with the MATLAB and Simulink prototypes with respect to the requirements, data had to be packed into larger containers. Doing that made it possible to transfer data amounts many times greater than the stated data criterion. Another use-case that might be even more promising regarding HLA and the automotive industry came up during the thesis work. It involves running distributed Simulink models offline (without the real-time requirements) executed time-synchronized, with help of HLA.