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  • 1051.
    Badampudi, Deepika
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Britto, Ricardo
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Unterkalmsteiner, Michael
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Modern code reviews: Preliminary results of a systematic mapping study2019In: PROCEEDINGS OF EASE 2019 - EVALUATION AND ASSESSMENT IN SOFTWARE ENGINEERING, Association for Computing Machinery , 2019, p. 340-345Conference paper (Refereed)
    Abstract [en]

    Reviewing source code is a common practice in a modern and collaborative coding environment. In the past few years, the research on modern code reviews has gained interest among practitioners and researchers. The objective of our investigation is to observe the evolution of research related to modern code reviews, identify research gaps and serve as a basis for future research. We use a systematic mapping approach to identify and classify 177 research papers. As preliminary result of our investigation, we present in this paper a classification scheme of the main contributions of modern code review research between 2005 and 2018. © 2019 Association for Computing Machinery.

  • 1052.
    Badampudi, Deepika
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Claes, Wohlin
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Kai, Petersen
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Software Component Decision-making: In-house, OSS, COTS or Outsourcing: A Systematic Literature Review2016In: Journal of Systems and Software, ISSN 0164-1212, E-ISSN 1873-1228, Vol. 121, p. 105-124Article in journal (Refereed)
    Abstract [en]

    Component-based software systems require decisions on component origins for acquiring components. A component origin is an alternative of where to get a component from. Objective: To identify factors that could influence the decision to choose among different component origins and solutions for decision-making (For example, optimization) in the literature. Method: A systematic review study of peer-reviewed literature has been conducted. Results: In total we included 24 primary studies. The component origins compared were mainly focused on in-house vs. COTS and COTS vs. OSS. We identified 11 factors affecting or influencing the decision to select a component origin. When component origins were compared, there was little evidence on the relative (either positive or negative) effect of a component origin on the factor. Most of the solutions were proposed for in-house vs. COTS selection and time, cost and reliability were the most considered factors in the solutions. Optimization models were the most commonly proposed technique used in the solutions. Conclusion: The topic of choosing component origins is a green field for research, and in great need of empirical comparisons between the component origins, as well of how to decide between different combinations of them.

  • 1053.
    Badampudi, Deepika
    et al.
    Blekinge Institute of Technology, School of Computing.
    Fricker, Samuel
    Blekinge Institute of Technology, School of Computing.
    Moreno, Ana
    Perspectives on Productivity and Delays in Large-Scale Agile Projects2013Conference paper (Refereed)
    Abstract [en]

    Many large and distributed companies run agile projects in development environments that are inconsistent with the original agile ideas. Problems that result from these inconsistencies can affect the productivity of development projects and the timeliness of releases. To be effective in such contexts, the agile ideas need to be adapted. We take an inductive approach for reaching this aim by basing the design of the development process on observations of how context, practices, challenges, and impacts interact. This paper reports the results of an interview study of five agile development projects in an environment that was unfavorable for agile principles. Grounded theory was used to identify the challenges of these projects and how these challenges affected productivity and delays according to the involved project roles. Productivity and delay-influencing factors were discovered that related to requirements creation and use, collaboration, knowledge management, and the application domain. The practitioners’ explanations about the factors' impacts are, on one hand, a rich empirical source for avoiding and mitigating productivity and delay problems and, on the other hand, a good starting point for further research on flexible large-scale development.

  • 1054.
    Badampudi, Deepika
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Wnuk, Krzysztof
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Wohlin, Claes
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Franke, Ulrik
    Swedish Institute of Computer Science, SWE.
    Šmite, Darja
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Cicchetti, Antonio
    Mälardalens högskola, SWE.
    A decision-making process-line for selection of software asset origins and components2018In: Journal of Systems and Software, ISSN 0164-1212, E-ISSN 1873-1228, Vol. 135, p. 88-104Article in journal (Refereed)
    Abstract [en]

    Selecting sourcing options for software assets and components is an important process that helps companies to gain and keep their competitive advantage. The sourcing options include: in-house, COTS, open source and outsourcing. The objective of this paper is to further refine, extend and validate a solution presented in our previous work. The refinement includes a set of decision-making activities, which are described in the form of a process-line that can be used by decision-makers to build their specific decision-making process. We conducted five case studies in three companies to validate the coverage of the set of decision-making activities. The solution in our previous work was validated in two cases in the first two companies. In the validation, it was observed that no activity in the proposed set was perceived to be missing, although not all activities were conducted and the activities that were conducted were not executed in a specific order. Therefore, the refinement of the solution into a process-line approach increases the flexibility and hence it is better in capturing the differences in the decision-making processes observed in the case studies. The applicability of the process-line was then validated in three case studies in a third company. © 2017 Elsevier Inc.

  • 1055.
    Badampudi, Deepika
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Wohlin, Claes
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Bayesian Synthesis for Knowledge Translation in Software Engineering: Method and Illustration2016In: 2016 42th Euromicro Conference on Software Engineering and Advanced Applications (SEAA), IEEE, 2016Conference paper (Refereed)
    Abstract [en]

    Systematic literature reviews in software engineering are necessary to synthesize evidence from multiple studies to provide knowledge and decision support. However, synthesis methods are underutilized in software engineering research. Moreover, translation of synthesized data (outcomes of a systematic review) to provide recommendations for practitioners is seldom practiced. The objective of this paper is to introduce the use of Bayesian synthesis in software engineering research, in particular to translate research evidence into practice by providing the possibility to combine contextualized expert opinions with research evidence. We adopted the Bayesian synthesis method from health research and customized it to be used in software engineering research. The proposed method is described and illustrated using an example from the literature. Bayesian synthesis provides a systematic approach to incorporate subjective opinions in the synthesis process thereby making the synthesis results more suitable to the context in which they will be applied. Thereby, facilitating the interpretation and translation of knowledge to action/application. None of the synthesis methods used in software engineering allows for the integration of subjective opinions, hence using Bayesian synthesis can add a new dimension to the synthesis process in software engineering research.

  • 1056.
    Badampudi, Deepika
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Wohlin, Claes
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Gorschek, Tony
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    An Evaluation of Knowledge Translation in Software Engineering2019In: International Symposium on Empirical Software Engineering and Measurement, IEEE Computer Society , 2019Conference paper (Refereed)
    Abstract [en]

    Knowledge translation is defined, in health sciences, as 'the exchange, synthesis and ethically sound application of research results in practice'. The objective of this paper is to implement and conduct a feasibility evaluation of a knowledge translation framework in software engineering. We evaluated the outcome of the knowledge translation framework in an industrial setting, along with the effectiveness of the interventions undertaken as part of knowledge translation in a multi-case study. The results of the evaluation suggest that the practitioners perceive the knowledge translation framework to be valuable and useful. In conclusion, this paper contributes towards the reporting of a systematic implementation of knowledge translation and evaluating its use in software engineering. © 2019 IEEE.

  • 1057.
    Badampudi, Deepika
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Wohlin, Claes
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Gorschek, Tony
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Contextualizing research evidence through knowledge translation in software engineering2019In: PROCEEDINGS OF EASE 2019 - EVALUATION AND ASSESSMENT IN SOFTWARE ENGINEERING, Association for Computing Machinery , 2019, p. 306-311Conference paper (Refereed)
    Abstract [en]

    Usage of software engineering research in industrial practice is a well-known challenge. Synthesis of knowledge from multiple research studies is needed to provide evidence-based decision-support for industry. The objective of this paper is to present a vision of how a knowledge translation framework may look like in software engineering research, in particular how to translate research evidence into practice by combining contextualized expert opinions with research evidence. We adopted the framework of knowledge translation from health care research, adapted and combined it with a Bayesian synthesis method. The framework provided in this paper includes a description of each step of knowledge translation in software engineering. Knowledge translation using Bayesian synthesis intends to provide a systematic approach towards contextualized, collaborative and consensus-driven application of research results. In conclusion, this paper contributes towards the application of knowledge translation in software engineering through the presented framework. © 2019 Association for Computing Machinery.

  • 1058.
    Badampudi, Deepika
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Wohlin, Claes
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Gorschek, Tony
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Guidelines for Knowledge Translation in Software EngineeringIn: Article in journal (Refereed)
  • 1059.
    Badampudi, Deepika
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Wohlin, Claes
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Petersen, Kai
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Experiences from Using Snowballing and Database Searches in Systematic Literature Studies2015Conference paper (Refereed)
    Abstract [en]

    Background: Systematic literature studies are commonly used in software engineering. There are two main ways of conducting the searches for these type of studies; they are snowballing and database searches. In snowballing, the reference list (backward snowballing - BSB) and citations (forward snowballing - FSB) of relevant papers are reviewed to identify new papers whereas in a database search, different databases are searched using predefined search strings to identify new papers. Objective: Snowballing has not been in use as extensively as database search. Hence it is important to evaluate its efficiency and reliability when being used as a search strategy in literature studies. Moreover, it is important to compare it to database searches. Method: In this paper, we applied snowballing in a literature study, and reflected on the outcome. We also compared database search with backward and forward snowballing. Database search and snowballing were conducted independently by different researchers. The searches of our literature study were compared with respect to the efficiency and reliability of the findings. Results: Out of the total number of papers found, snowballing identified 83% of the papers in comparison to 46% of the papers for the database search. Snowballing failed to identify a few relevant papers, which potentially could have been addressed by identifying a more comprehensive start set. Conclusion: The efficiency of snowballing is comparable to database search. It can potentially be more reliable than a database search however, the reliability is highly dependent on the creation of a suitable start set.

  • 1060.
    Badea, Adrian
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    Bradea, Florentina
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    FinTech in emerging markets: a case study for Romania and Financial Technologies2018Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose. The purpose of this paper is to describe the cultural, socio-demographic, technologic, financial and regulatory factors in Romania and analyze how these factors influence the adoptionof FinTech in the Romanian market.

    Design/methodology/approach. Using a case study as a research method, we have gained comprehensive information from various data sources. Furthermore, we have distributed a detailed questionnaire and attempted to gauge the influence of various factors over the respondents’ usage of FinTech.

    Contribution. This study attempts to improve a theoretical framework regarding the main factorsinfluencing the Fintech adoption in emerging economies. The paper contributes to the literature by describing how the interrelation of different factors contributes to the adoption of a new technologyin an emerging country which has a relatively conservative society.

    Major Findings. The results of the study generally confirmed the findings in the global literatureon this topic. Some global findings could not be confirmed, partially due to the inherent bias in thesample selection. The biggest new factor found to influence FinTech adoption was the users’ priorexperience with a non-banking financial services provider, followed by their breadth of usage of various IT&C services and the time they spent online.

  • 1061.
    Badin, Iulia
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    Perfektionism, emotion och kreativ problemlösning2014Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Kreativiteten är mångfacetterad och intensivt studerad, med processerna involverade i kreativ problemlösning traditionellt undersökta inom kognitionen. Perfektionismen är ett personlighetsdrag som påverkar alla områden i individernas liv. Ändå är perfektionismens påverkan över kreativ problemlösning otillräckligt utforskat. Därför var syftet med föreliggande studie att undersöka perfektionismens effekter över kreativ problemlösning samt att undersöka hur perfektionism tillsammans med känslor påverkar förmågan att lösa kreativa problem. Genom en webbaserad enkät samlades data in från 96 deltagare genom självskattningsinstrument för perfektionism och för känslotillstånd, ett test för kognitiv reflektion och ett insiktsproblem där svarstiderna registrerades. Inom perfektionism delades deltagarna in i tre grupper: icke-perfektionister, adaptiva perfektionister och maladaptiva perfektionister. Resultatet indikerade att det finns vissa skillnader mellan maladaptiva perfektionister och de andra två grupperna, men inte mellan adaptiva perfektionister och icke-perfektionister när sättet att lösa problemet på undersöktes i relation till tiden de ägnade åt uppgiften. Känslornas roll har inte fastställts och behöver ytterligare forskning.

  • 1062. Badoi, Cornelia-Ionela
    et al.
    Croitoru, Victor
    Popescu, Adrian
    IPSAG Cognitive Radio Routing Protocol: Models and Performance2011Conference paper (Refereed)
    Abstract [en]

    The paper is about performance evaluation of IP Spectrum Aware Geographic routing protocol (IPSAG). IPSAG is an opportunistic cognitive routing protocol which determines a source-destination route in a hop by hop manner, based on both global and local information. Simulation results are reported for a particular case of IPSAG, where the cognitive radio (CR) nodes are uniformly distributed inside the cognitive radio network (CRN), and a two-dimensional random walk model is used to model the mobility of CR nodes. The results show that the IPSAG protocol is performing well in the case of a highly mobile CRN and that the source-destination path is successfully found in the majority of the cases, especially when the network is highly populated.

  • 1063.
    Bafana, Ramzi
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Applied Signal Processing.
    Zulfiqar, Zain
    Blekinge Institute of Technology, Faculty of Engineering, Department of Applied Signal Processing.
    Solar Energy2014Student thesis
    Abstract [en]

    This thesis is about Photovoltaic (PV) cells and its stresses in various directions by calculating the power generated using solar cells under different conditions to improve its efficiency. Our research studies found that using multi-junction cells with larger substrates can increase the efficiency to some extent which in practice is limited to 43 percent. The experiment was conducted using ten solar cells each with an area of 20.9〖cm〗 ^2, where each cell gives 0.5 V and 0.4 A and a 1.25 Ω resistor was used. The cells were connected in series. Once, the PV cells were fixed horizontally and the other time tested in tilted position under same outdoor condition. The purpose of testing PV cells was to investigate the efficiency under above mentioned conditions. The data collected from the readings was used in calculation, and we have obtained from the calculations that horizontally fixed cells gave 4.8 percent efficiency whereas tilted cells gave 6.6 percent efficiency. Hence, the ratio showed that fixed cells produced 37.5 percent more power compared to horizontally fixed cells. Our other experiment consisted of testing PV cells under different temperature conditions that was done using a freezer and an oven for temperature variation and a tungsten bulb was used as a light source. The purpose of performing this experiment was to investigate how the efficiency of PV cells is affected under extreme conditions. Part of our thesis was also including studies and analysis of produced energy by the solar panel installed on the roof of “BTH” building in Karlskrona, Sweden. The data consisted of energy produced from February up to August 2014. The investigation also included finding the highest produced energy during these months. We have found that the highest energy was generated on the 1st of July which was 12.86 kWh. Furthermore, we went deep into investigation of the 1st of July to know exactly which hour of that day the highest energy was produced. The data showed that the highest produced energy was at 12:19 and 13:19 which was 2.03 kWh.

  • 1064.
    Baffour, Asare
    Blekinge Institute of Technology, School of Management.
    The Compliance or Non-Compliance of the Internal Audit Department of Organisations with the Guidelines Specified by the Institute of Internal Auditors(IIA) A Case Study of Star Assurance Company Ltd.2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    This study investigated the compliance or non-compliance of organisations with the critical elements required for setting up and operating an internal audit department as expected by the Institute of Internal Auditors UK. Compliance with the Standards is mandated by the IIA for every individual who provides internal audit services The researcher used a case study to explain the relationship between the variables: the case of the internal audit department of Star Assurance Company. The researcher employed both primary and secondary data, qualitative and quantitative research methods were also used to examine the internal audit department of Star Assurance Company Ltd (SAC). A number of data collection methods were combined to verify the reliability and accuracy of the data as suggested by Yin(2003). The study used a combination of data collection tools; a Survey, Questionnaire, Relevant Corporate Documents and Observation.. Literature, which was relevant to the subject matter, was reviewed to determine the benchmarks for an effective internal audit department. The study discussed the key functions of an internal audit department and the major objectives of internal audits. The study also discussed the independence, organizational status and objectivity required for effective performance of the department. The study also discussed the role of internal auditors and the critical elements required of every effective internal audit department. The challenges faced by internal audit departments were also discussed. Useful insights were taken from the Institute of Internal Auditors guidelines and also the Sarbanes Oxley Act. A brief profile of the company, which was studied, was included in the work. The research revealed that the company had made significant efforts to comply with the requirements of the I.I.A. I concluded by making recommendations, which the company could adopt to enable them, comply more extensively with the IIA guidelines

  • 1065.
    Bagherpour, Farshid
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    Hamsand, Philippe
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    Senior citizen as a market segment for Swedish travel industry2015Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    The senior tourism is getting more and more attention in many countries as the importance of this market segment becomes more evident. This is strengthened by political initiative/project, where generous financial aids are offered to develop promotion and communication activities to disseminate the transnational packages and raise awareness on the tourism offer for seniors (EU-Commission, 2013) could be interpreted as a possible under-served trend within tourism. This thesis aims to give insight into how the senior tourism is defined and how it is served by the Swedish main stream travel companies. Further in this thesis the authors are trying to find an answer if the market segmentation where senior citizens would be defined as a specific market segment, would benefit the companies.

  • 1066.
    Bagnato, Alessandra
    et al.
    SOFTEAM, FRA.
    Fucci, Davide
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    European Project Space Papers for the PROFES 2019: Summary2019In: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) / [ed] Franch X.,Mannisto T.,Martinez-Fernandez S., Springer , 2019, Vol. 11915, p. 573-576Conference paper (Refereed)
    Abstract [en]

    The European Project Space at PROFES 2019 provides an opportunity for researchers involved in ongoing and recently completed research projects (national, European, and international) related to the topics of the conference to present their projects and disseminate the objectives, deliverables, or outcome. © Springer Nature Switzerland AG 2019.

  • 1067.
    Bahrieh, Sara
    Blekinge Institute of Technology, School of Engineering.
    Sensor Central / Automotive Systems2013Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [en]

    How to display objects which were detected from different devices in one coordinate system? Nowadays most vehicles are equipped with front and back sensors to help the driver in driving process. Companies who provide this technology need to have an application which enables them for easy data fusion from these sensors and recording the process. Besides sensor’s design, programming of them is an important aspect. BASELABS Connect has the solution in a user friendly way. Creating Sensor Central component for BASELABS Connect is the main goal of this thesis. Sensor Central from BASELABS Connect requires six variables of sensor’s position for each sensor to demonstrate the objects from all sensors to one unique coordinate system. In this thesis, it was intended to create such a component which was mounted between all the sensors and the charting component to convert the objects location from different sensor’s position to one coordinate system and to be usable from other vehicles too.

  • 1068.
    Bahta, Maria Teclemariam
    et al.
    Blekinge Institute of Technology, School of Management.
    Persson, Michael
    Blekinge Institute of Technology, School of Management.
    Kreditkort och påverkan: Om påverkansfaktorer som leder till konsumenters agerande2013Independent thesis Basic level (degree of Bachelor)Student thesis
    Abstract [sv]

    Syfte: Syftet med uppsatsen är att lyfta fram hur säljare aktivt arbetar med påverkansfaktorerna auktoritet och skrämsel vid försäljning av kreditkort och på vilket sätt faktorerna skapar intresse hos kunder att skaffa ett kreditkort. Vi vill även undersöka ifall vi kan se vilken av de två påverkansfaktorerna som är mest effektiv vid kreditkortsförsäljning. Metod: Undersökningen är baserad på en kvalitativ studie och vi har genomfört intervjuer med fem duktiga säljare från de största bankerna. Slutsats: Slutsatsen som studien har påvisat är att det finns tydliga kopplingar mellan utvalda faktorer och kreditkortsförsäljning. Vår undersökning visar även att det finns likheter i säljargumenten som skickliga säljare inom kreditkortsbranschen använder och dessa argument har betydelse när kunder påverkas.

  • 1069. Bahtsevani, Christel
    et al.
    Khalaf, Azzam
    Willman, Ania
    Evaluating psychiatric nurses´awarness of evidence-based nursing publications.2005In: Worldviews on Evidence-Based Nursing, ISSN 1545-102X , Vol. 2, no 2, p. 196-207Article in journal (Refereed)
  • 1070. Bahtsevani, Christel
    et al.
    Udén, Giggi
    Willman, Ania
    Outcomes of evidence-based clinical practice guidelines: A systematic review2004In: International Journal of Technology Assessment in Health Care, ISSN 0266-4623 , Vol. 20, no 4, p. 427-433Article in journal (Refereed)
  • 1071. Bahtsevani, Christel
    et al.
    Willman, Ania
    Khalaf, Azzam
    Östman, Margareta
    Developing an instrument for evaluating implementation of clinical practice guidelines: a test-retest study2008In: Journal of Evaluation In Clinical Practice, ISSN 1356-1294, E-ISSN 1365-2753, Vol. 14, no 5, p. 839-846Article in journal (Refereed)
    Abstract [en]

    this study focuses on the development of an instrument for the evaluation of clinical practice guidelines and is one part of a research project about the implementation and use of such guidelines among hospitals in the southern region of Sweden. The aim of the present paper was to investigate the test -retest reliability of a questionnaire. A questionnaire was designed to gather data about guidelines that have been implemented as well as information about factors, which, according to the promoting Action on Research Implementation in Health Services (PARIHS)-model, influence the success of implementation. Thirty-nine health professionals at one of the hospitals included in the survey completed the questionnaire on two occasions within a mean time of 5.5 weeks. The test-retest reliability was analysed by means of Cohen´s kappa and percentage concordance. Eight items had good agreement in terms of strength and high percentage concordance. With regard to the kappa values, 13 items show moderate and two fair agreement. The test-retest reliability scores show mainly acceptable results indicating a reasonable stability, thus suggesting the possibility of further developing the instrument. The factors described in the PARIHS-model seem relevant for use in evaluating implementation and use of guidelines. The instrument could benefit from a revision of the language in order to enhance clarity and make it less abstract.

  • 1072. Bahtsevani, Christel
    et al.
    Willman, Ania
    Stoltz, Peter
    Östman, Margareta
    Experiences of the implementation of clinical practice guidelines: interviews with nurse managers and nurses in hospital care2010In: Scandinavian Journal of Caring Sciences, ISSN 0283-9318, E-ISSN 1471-6712, Vol. 24, no 3, p. 514-522Article in journal (Refereed)
    Abstract [en]

    The implementation of clinical practice guidelines (CPGs) has become an increasingly common element of clinical care, but little qualitative research has been conducted in real-life settings. The aim was to elucidate experiences and factors of importance for the implementation of CPGs in hospital care. Twenty interviews were conducted, audio-taped and transcribed verbatim. A manifest and latent content analysis was performed to interpret the text. A system of subcategories related to five categories and one overall theme were developed. the data reveal that the implementation of CPGs is continnuous processes of creating reliable and tenable routines that involve all staff members and expect to lead to better and safer patient care as well as to increased knowledge and confidence among staff. The process is initiated by internal or external demands and represents a way to keep abreast of knowledge development. Several factors facilitate the implementation and have influence on the use and compliance with CPGs. To increase support for and willingness to use the CPGs, it appears important to involve all staffs in the implementation process as well as to follow up and give feedback continuously to staff and management. It seems necessary toevaluate the process to supervise compliancewith CPGs and to balance priorities and costs. Evaluationcan also demonstrate importance of the application.

  • 1073. Bai, Guohua
    A Sociocybernetic Model of Sustainable Social Systems2009Conference paper (Refereed)
    Abstract [en]

    The ongoing economic crisis world around has asked for a theoretical understanding and deep analysis of what have been wrong in our economic system in specific and social system as whole. Discussions in many forums and mass media have mostly focused on a level of first order casual-effects such as bank and credit system in relation to house loans and car industries, and where and how much the stimulating packages should be distributed, etc. This is what I called a liveability level problem. A second order understanding of fundamental systems structure and social subsystems relationships however, have not been much addressed properly. This is what I called the sustainability problem. This paper will propose an epistemological model based on cybernetic feedback principle and the Activity Theory to interpret the second order problems that deeply embed in our social-economic system structure. So the liveability and sustainability are coherently discussed within a socio-cybernetic system. The first part of the paper introduces shortly principles of feedbacks from cybernetics, especially understanding the behaviours of positive and negative feedbacks. Then, the Activity Theory and related concepts from social autopoietic theory are introduced. The aim of introducing those concepts is to provide the basic elements/components to the construction of a double-loops feedback model in the second part. In the last, the current economic crisis is interpreted based on the constructed model, to verify the usability of the proposed model.

  • 1074. Bai, Guohua
    A Sustainable Information System for e-home Services2004Conference paper (Refereed)
    Abstract [en]

    E-home related home-services (including homecare and home healthcare) in China is urgently needed. The population of aged people over 80 is increasing 5% every year in China, and to year 2050, one fourth of whole population or 0.4 billions people in China are aged staying at home. Meanwhile the government cannot afford with a national elderly care system like most western countries as Sweden. This is because China has had one-child/one-family policy since 1970’s, and this radical policy has made China step in aged society very quickly within only 20 years, while the same process took 40-80 years in western countries. Even worse, China becomes aged society when the country is still poor and under developing with GDP per capita less than 1000$, comparing to western countries with 5000 – 10000 $ when they became aged society. E-home provides China with a unique, and maybe the most effective solution to the problem. By applying effective IT&C at home, elder people are facilitated to manage their own daily life. If needed, they can always call help from their collective service centre that is located in their resident area and the collective service centre can provide with both homecare (cleaning, shopping, reparation, baby care etc.) and home healthcare (legitimate medical care). Elder people can be also monitored (if wished by all partners) both at home and out door by bearing sensors that can send singles directly to related care providers (including their children and relatives if wished). E-home will greatly increase the security of elder people, release great worry from both their children and elder people themselves, and can be afford by most people. However, e-home is more than just a technical problem, and it needs a systemic way and social-psychological study how to design e-home system. In the end, e-home system must provide with needed services to residents. I will introduce IMIS project ´Integrated Mobile Information System for Home Healthcare’ financed by Swedish Agency for Innovative Systems (VINNOVA). This project will continue to 2006, and one of the outputs will be a sustainable software platform which is based on a systemic study of social psychological factors involved in the home healthcare. I will provide with some Swedish experiences and the so called ‘Scandinavia Approach’ in conducting such complex system to my colleagues in China, and I hope the IMIS project will be also developed in China based up on some feasibility and desirability studies with some Chinese colleagues.

  • 1075.
    Bai, Guohua
    Blekinge Institute of Technology, School of Computing.
    A Sustainable Platform for E-services System Design2004In: Journal of Systems Science and Systems Engineering, ISSN 1004-3756, E-ISSN 1861-9576, Vol. 13, no No.4Article in journal (Refereed)
    Abstract [en]

    By integrating system thinking and social psychology, this paper presents an Activity System Theory (AST) approach to the platform design of e-service systems in general, and e-healthcare systems in specific. In the first part, some important principles of AST and a sustainable model of human activity system are introduced. Then a project ‘Integrated Mobile Information System for Healthcare (IMIS)’ is presented to demonstrate how to construct a comprehensive platform for various complex e-service systems based on the sustainable model of AST. Our research focused on the complex e-healthcare system in Sweden, and the results showed that the model of AST can provide the designers of e-service system with a comprehensive and sustainable platform for designing various kinds of e-service system

  • 1076.
    Bai, Guohua
    Blekinge Institute of Technology, School of Computing.
    Activity System Theory Approach to Healthcare Information System2004Conference paper (Refereed)
    Abstract [en]

    Healthcare information system is a very complex system and has to be approached from systematic perspectives. This paper presents an Activity System Theory (ATS) approach by integrating system thinking and social psychology. First part of the paper, the activity system theory is presented, especially a recursive model of human activity system is introduced. A project ‘Integrated Mobile Information System for Diabetic Healthcare (IMIS)’ is then used to demonstrate a practical application of the Activity System Theory especially in constructing healthcare information system. Our conclusion is that the activity system model can provide the service system designers with a comprehensive and integrated framework for designing healthcare information system in specific, and for designing various kinds of service systems in general.

  • 1077. Bai, Guohua
    Activity Theory as a Framework for CSCW Software Architecture Design.2002In: Activity Theory and Sociocultural Research. / [ed] Nissen, M; Westerberg, K, 2002Chapter in book (Other academic)
  • 1078. Bai, Guohua
    An Epistemological Model of Social Activities: Sociocybernetics2003Conference paper (Refereed)
  • 1079.
    Bai, Guohua
    Blekinge Institute of Technology, Faculty of Computing, Department of Creative Technologies.
    An Organic View of Prototyping in Information System Development2014In: 2014 IEEE 17th International Conference on Computational Science and Engineering (CSE) / [ed] Liu, X; ElBaz, D; Hsu, CH; Kang, K; Chen, W, ChengDu: IEEE, 2014, Vol. Article number 07023844, p. 1814-1818Conference paper (Refereed)
    Abstract [en]

    This paper presents an organic view of prototyping for managing dynamic factors involved in evolutionary design of information systems (IS). Those dynamic factors can be caused by, for example, continuing suggestions from users, changes in the technologies, and users-designers learning related stepwise progresses. Expanding the evolutionary prototyping to ‘start small and grow’, the organic view of prototyping proposes two prerequisites to do so, namely 1) a sustainable and adaptive ‘embryo’ – an organic structure of the future system, and 2) an embedded learning and feedback management that the actors of the system (users, designers, decision makers, administrators) can communicate with each other. An example of eHealth system design demonstrates how the prerequisites can be implemented.

  • 1080. Bai, Guohua
    e-Health – Challenges and Approaches2010Conference paper (Refereed)
    Abstract [en]

    Abstract: e-Health has been one of the most expected IT (information technology) applications just like e-Business, e-Learning, e-Government, and e-Democracy. However, e-Health has not reached the expected scale of use IT. There are challenges especially involved in healthcare sectors that are so different from other sectors. I will stress those challenges and suggest some approaches to meet the challenges from my past 10 years experience as a researcher in this area. I hope this will provide with researchers, entrepreneurs, and practitioners some hints when e-Health is the target area.

  • 1081.
    Bai, Guohua
    Blekinge Institute of Technology, School of Computing.
    E-hälsa: Utmaningen och Möjligheter2006Conference paper (Other academic)
    Abstract [en]

    As the organiser of the workshop 'IT-stöd för vård och omsorg i hemmet', the author presents a general picture of the subject, and call for one day's discussion with around 30 participants from all around Sweden.

  • 1082. Bai, Guohua
    Feedback Principle for Studies of Social Activities2003Conference paper (Refereed)
  • 1083. Bai, Guohua
    Globalization Through Feedback of Social Activities2003Conference paper (Refereed)
  • 1084.
    Bai, Guohua
    Blekinge Institute of Technology, School of Computing.
    ICT PROJECTS: Case Study Reports2006Report (Other academic)
    Abstract [en]

    The case study of OVK (Seamless healthcare chain supported by ICT (Obruten vårdkedja med IT –stöd) describes some basic key factors for sucessful eHealth project, and is documented in the projects database in IANIS+

  • 1085. Bai, Guohua
    Integrated Mobile Information System (IMIS) for Healthcare Work.2002Conference paper (Refereed)
  • 1086. Bai, Guohua
    Integrerade Nätverk i Hemsjukvården För Personer Med Diabetes (IMIS)2005Conference paper (Refereed)
    Abstract [en]

    The presentation is a IMIS project report to VINNOVA's programkonferens IT i Hemsjukvård.

  • 1087. Bai, Guohua
    Integrerade nätverk i hemsjukvården för personer med diabetes (IMIS)2007Report (Other academic)
    Abstract [sv]

    IT för sjukvård i hemmet är ett program inom VINNOVAs enhet Tjänster och IT användning.

  • 1088.
    Bai, Guohua
    et al.
    Blekinge Institute of Technology, School of Computing.
    Guo, Yang
    Blekinge Institute of Technology, School of Computing.
    A General Architecture For Developing A Sustainable Elderly Care e-Health System2011Conference paper (Refereed)
    Abstract [en]

    Based on some identified problems and challenges to the current healthcare system, this paper proposes architecture for developing e-health system to meet the challenges and resolve some problems. The architecture is based on a solid theoretical model of human activity, and it has properties such as sustainability, generality, and expandability. We demonstrate the properties of the architecture through an ongoing research project. We concluded that this architecture can be widely used to integrate various small scale applications of e-health systems and to resolve some current design problems such as interoperability and knowledge sharing.

  • 1089. Bai, Guohua
    et al.
    Guo, Yang
    Activity Theory Ontology for Knowledge Sharing in E-health2010Conference paper (Refereed)
    Abstract [en]

    Knowledge sharing has become an imperative and challenging issue in the E-health field for improving total quality of services. However, since the E-health subject is a multi-disciplinary and cross-organizational area, to have shared concepts, vocabulary plus a specification of its intended meaning, namely an ontology, has been an obstacle to develop e-health system. We will in this paper propose a knowledge sharing ontology on the basis of Activity Theory. We believe that Activity Theory can provide high level and rich ontology for the developers of E-health system to encompass the multi-disciplinary and cross-organizational knowledge. We validate our approach in the end by demonstrating our project IMIS (Integrated Mobile Information System for Healthcare) that uses the activity theory as ontological architecture for the construction of the whole system.

  • 1090.
    Bai, Guohua
    et al.
    Blekinge Institute of Technology, School of Computing.
    Henesey, Lawrence
    Blekinge Institute of Technology, School of Computing.
    Coping with System Sustainability: A Sociocybernetics Framework for Social-Economic System Architecture2012In: Systems research and behavioral science, ISSN 1092-7026, E-ISSN 1099-1743, Vol. 29, no 3, p. 263-273Article in journal (Refereed)
    Abstract [en]

    This paper proposes an epistemological model based on cybernetic principles and activity theory to interpret two levels of problems that are intertwined in our social-economic system, namely the liveability and sustainability problems. In the first part of the paper, important principles and concepts from related fields of cybernetics and activity theory are introduced for later construction of a model. In the second part, a model is constructed based on the introduced concepts. To validate the proposed model, the current economic crisis is studied in the third part. An important contribution of the proposed model is a theoretical understanding of the two levels problems, and how to construct macro social-economical policies to avoid similar crisis in the future.

  • 1091. Bai, Guohua
    et al.
    Malmqvist, Gustav
    Guide to REgional Good Practice eHealth2007Report (Other academic)
    Abstract [en]

    This report shows the result of the work of IANIS+ eHealth work group (WG). The WG has collected regional eHealth experiences from around Europe through a number of activities: • Regional eHealth case studies of which 17 (from 15 regions) are shown in this report • Four joint meetings of the group of which one was a policy seminar with invited guests from the EU Commission, relevant organisations in the field of eHealth and regional authorities • A meeting with the European Commission DG Information Society & Media, Unit H1 eHealth • Collaboration with the eHealth network within the organisation Assembly of European Regions (AER) • Attendance in recent major eHealth conferences: · Personal Health Systems arranged by the European Commission when launching the eHealth part of the 7th Framework Programme, 11-12 February 2007 · The EU-US eHealth Policy Workshop, 10 May 2007 · The final conference of the INTERREG IIIB project Baltic eHealth, 21-22 May 2007 • eHealth seminars at IANIS+ annual conferences in Blekinge 2006 and Bilbao 2007 The innovation perspective of eHealth in the regions has been the focus for the IANIS+ eHealth WG. Regional diversity regarding strategies, policies, and action plans for eHealth can act as a driving factor for successful eHealth projects, but leads also to challenges for interoperability, standardisation, integrity and security. It is important to learn from others. It may be about how to choose the right technology or what methods to use for implementation. Depending on what area of eHealth, there are numerous projects and up-and-running services from which we can learn. Not to forget there are also many experiences from unsuccessful trials. Even if an eHealth solution has failed in one setting, it can be a success under different circumstances. The aim of the IANIS+ eHealth Working Group was to share experience between regions belonging to the network, and bring up some issues of good practice for regional eHealth implementation. Projects brought up in the IANIS+ working group are projects in there own rights, with pros and cons. The projects cover different perspectives and types of eHealth. Some were difficult to evaluate while others are valuable comparable experiences from different settings and circumstances. In any case, we can learn something from all the cases as examples from reality and as a complement to formal evaluations and scientific studies of eHealth. We would rather use the term good practice than best practice. There is always something good to learn from others while there is hardly any best practice that works under every circumstance.

  • 1092. Bai, Guohua
    et al.
    Zhang, Peng
    Developing a Semantic Web Services for Interoperability2005Conference paper (Refereed)
    Abstract [en]

    This paper deals with the design problems in healthcare information systems on how to adapt to dynamic factors and diversities so as to reach the interoperability between healthcare actors. Those dynamic factors and diversities are caused by, for example, constant suggestions from users, changes in the applied technologies, and after-learning related stepwise progresses. We suggest applying Web services technology, especially the idea of Semantic Web to tackle the problem of diversity in healthcare branch. In order to tackle the problem of dynamic changes during the design process, we suggest an evolutionary design methodology based upon an organic development metaphor – embryonic prototyping approach (EmA). We demonstrate our idea by the project IMIS that is to design a semantic Web service for the diabetic healthcare.

  • 1093. Bai, Guohua
    et al.
    Zhang, Peng
    Functions For eHealth Communication Systems Design2009Report (Other academic)
    Abstract [en]

    The design of eHealth systems calls for a clear needs analysis and functions based on the users’ perspective. However, this is often the most difficult part of designing eHealth service systems, because of the diversity of users and diversified needs. This paper provides a general mapping and overview of the basic functions of eHealth systems identified through two studies: (1) a comprehensive study of the resource book of eHealth projects under the European Sixth Framework programme (FP6), and (2) a theoretical study based on the framework of Activity Theory. The first study provides the eHealth system designers with an overview of a number of important and particular functions that the users/citizens need in order to get good services; while the second study presents a fundamental ‘skeleton’ and architecture for providing those particular functions in an orderly and coherent system.

  • 1094.
    Bai, Xuefeng
    Blekinge Institute of Technology, School of Engineering.
    Product Development starts from Crowdsourcing2012Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    A practice of applying of Product Service System (PSS)—Xinmade.com is demonstrated by a business plan and this paper discusses about using Crowdsourcing in the traditional New Product Development (NPD). Finally tips of applying Crowdsourcing in PSS are summarized.

  • 1095.
    BAIG, CLEMENT RANJITH ANTHIKKAD & IRFAN AHMED
    Blekinge Institute of Technology, School of Engineering.
    PERFORMANCE ENHANCEMENT OF OFDM IN PAPR REDUCTION USING NEW COMPANDING TRANSFORM AND ADAPTIVE AC EXTENSION ALGORITHM FOR NEXT GENERATION NETWORKSPERFORMANCE ENHANCEMENT OF OFDM IN PAPR REDUCTION USING NEW COMPANDING TRANSFORM AND ADAPTIVE AC EXTENSION ALGORITHM FOR NEXT GENERATION NETWORKS2013Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    This paper presents a new hybrid PAPR reduction technique for the OFDM signal, which combines a multiple symbol representations method with a signal clipping method. The clipping method is a nonlinear PAPR reduction scheme, where the amplitude of the signal is limited to a given threshold. Considering the fact that the signal must be interpolated before A/D conversion, a variety of clipping methods has been proposed. Some methods suggest the clipping before interpolation, having the disadvantage of the peaks re-growth. Other methods contributed that the clipping after interpolation, having the disadvantage of out-of-band power production. In order to overcome this problem different filtering techniques have been proposed. Filtering can also cause peak re-growth, but less than the clipping before interpolation. Another clipping technique supposes that only subcarriers having the highest phase difference between the original signal and its clipped variant will be changed. This is the case of the partial clipping method. To further reduce the PAPR, the dynamic of the clipped signal can be compressed. Linear methods like partial transmit sequence or selective mapping has been proposed for the reduction of PAPR as well. Another PAPR reduction method is the tone reservation. It uses tones on which no data is sent to reduce the transmitted signal peaks. Derivatives of this method with lower computation complexity and improved performance have been proposed: One-Tone One-Peak and one by-one iteration. A similar PAPR reduction method is the multiple symbol representations, where alternative signalling points are used to represent one symbol. The simulation results highlight the advantages of the proposed PAPR reduction method.

  • 1096.
    Baig, Imran
    Blekinge Institute of Technology, School of Engineering, Department of Systems and Software Engineering.
    Measuring Cohesion and Coupling of Object-Oriented Systems Derivation and Mutual Study of Cohesion and Coupling2004Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Cohesion and coupling are considered amongst the most important properties to evaluate the quality of a design. In the context of OO software development, cohesion means relatedness of the public functionality of a class whereas coupling stands for the degree of dependence of a class on other classes in OO system. In this thesis, a new metric has been proposed that measures the class cohesion on the basis of relative relatedness of the public methods to the overall public functionality of a class. The proposed metric for class cohesion uses a new concept of subset tree to determine relative relatedness of the public methods to the overall public functionality of a class. A set of metrics has been proposed for measuring class coupling based on three types of UML relationships, namely association, inheritance and dependency. The reasonable metrics to measure cohesion and coupling are supposed to share the same set of input data. Sharing of input data by the metrics encourages the idea for the existence of mutual relationships between them. Based on potential relationships research questions have been formed. An attempt is made to find answers of these questions with the help of an experiment on OO system FileZilla. Mutual relationships between class cohesion and class coupling have been analyzed statistically while considering OO metrics for size and reuse. Relationships among the pairs of metrics have been discussed and results are drawn in accordance with observed correlation coefficients. A study on Software evolution with the help of class cohesion and class coupling metrics has also been performed and observed trends have been analyzed.

  • 1097.
    Baig, Mirza Hamid
    et al.
    Blekinge Institute of Technology, School of Computing.
    Kiani, Hassan Shahzad
    Blekinge Institute of Technology, School of Computing.
    Performance Evaluation of MANET using MPLS2010Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Mobile Ad Hoc Network (MANET) is special kind of wireless network which does not have any fixed structure. They are paired for specific purpose within some concise time period. As the concept of “Micro Products” with a feature of “Mobility” has gain popularity, the MANET has benefited the mankind in many ways and in number of situations such as Natural Disaster, War Zone, and Medical Camp in far-flung Earthquake hit areas etc. In every situation mobile nodes organized themselves on temporary bases in network topology. Autonomous nodes having wireless infrastructure are interconnected to form an autonomous network and easily establish a connection from one place to another. These mobile nodes act either as routers or as a host. These nodes have routing capabilities for multi hop paths through which these are interconnected. The mobility of nodes needs efficient routing for MANET. So therewith, Multi Protocol Label Switching (MPLS) enhances routing with respect to path and packet forwarding. In our thesis we try to analyze the various effects of MPLS on MANET protocols when integrated with MPLS. Simulations were carried out using OPNET modeler 14.5 for analyzing the MPLS effects on the metrics like route discovery time, packet end-to-end delay and throughput. Moreover case study is also included to present a conceptual model for integrating MPLS with MANET protocols.

  • 1098.
    Baig, Mirza Mohammed Yousuf
    Blekinge Institute of Technology, School of Engineering, Department of Mechanical Engineering.
    Damage Assessment in Thin Materials: Finite Element Investigation2006Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    This thesis describes the process of detection, and if possible, also localization of the damage in non structural sheet-like materials. Simulation and analysis is carried out in ABAQUS with a FE model that has the same dynamic characteristics as the corresponding real material. Three types of damage forms are investigated: crack, hole and local weakness. Results presented in the report show that global damage detection and localization in sheet-like structure by monitoring changes in the modal parameters is possible. Based on the results, this thesis provides a basis for development of global non-destructive health monitoring methods for materials having no bending stiffness.

  • 1099. Baikov, V. A.
    et al.
    Ibragimov, Nail
    Blekinge Institute of Technology, School of Engineering, Department of Mathematics and Natural Sciences.
    Zheltova, I. S.
    Yakovlev, A. A.
    Conservation laws for two-phase filtration models2014In: Communications in nonlinear science & numerical simulation, ISSN 1007-5704, E-ISSN 1878-7274, Vol. 19, no 2, p. 383-389Article in journal (Refereed)
    Abstract [en]

    The paper is devoted to investigation of group properties of a one-dimensional model of two-phase filtration in porous medium. Along with the general model, some of its particular cases widely used in oil-field development are discussed. The Buckley-Leverett model is considered in detail as a particular case of the one-dimensional filtration model. This model is constructed under the assumption that filtration is one-dimensional and horizontally directed, the porous medium is homogeneous and incompressible, the filtering fluids are also incompressible. The model of "chromatic fluid" filtration is also investigated. New conservation laws and particular solutions are constructed using symmetries and nonlinear self-adjointness of the system of equations.

  • 1100.
    Bajagain, Krishna Mani
    Blekinge Institute of Technology, Faculty of Engineering, Department of Applied Signal Processing.
    Experiment with Moving Target Focusing using GB-SAR2014Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Ground Based Synthetic Aperture Radar (GB-SAR) refers to SAR system which is mounted on ground linear track. It works on same principle as conventional SAR. Nowadays GB-SAR plays prominent role in the studies of many natural phenomenon as well as in studying some artificial infrastructure or terrain. It is a cost effective solution for the target scenes where it needed continuous monitoring. In this thesis GB-SAR system is experimented to detect moving targets. It should be emphasized that detection of moving target using GB-SAR is very new idea in the research field. As in conventional SAR, defocusing and/or displacement errors for moving target occur during image formation process in GB-SAR too. To detect the moving target, we need to test different Normalized Relative Speed (NRS) until the best focusing of moving target is reached. The research has been carried out in the following way. Firstly several simulations were tested on MATLAB with ideal condition. Secondly real experiments with moving targets were implemented based on the simulation results to collect real SAR data. Finally the data retrieved in the experiments was processed for moving target detection. The experiment was conducted at the Radio Communication Laboratory of Blekinge Institute of Technology. The radar is developed with a vector network analyzer (ENA 5071C), a double ridge guide horn antenna, a corner reflector, low loss high frequency cables and a antenna positioner. The movement of the radar is determined by a linear track. The developed GB-SAR system is configured as an ultra wideband–ultra wide beam (UWB) system. The operating frequency range is set to 1.5 - 2.5 GHz and the length of aperture is about 4 m. The radar measurement is taken place at 17 positions. The Global Back Projection (GBP) algorithm is used for UWB SAR data processing including image formation and moving target detection.

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