277 research outputs found
Benchmarking performance management systems
No full textThe Balanced Scorecard and associated performance management approaches, has become a widely practiced and popular management reporting method in recent times. Moreover, enabling technology, which assists in the delivery and personalisation of corporate performance information, is having a deeper and more rapid impact than ever before. This paper presents a brief comparative benchmarking study of leading enterprise performance management systems. Also, the author discusses the merits of bespoke internet technology development and out-of-the-box portal functionalities. An analysis of key business drivers and implementation risks of such approaches is highlighted via a case study example, and concludes the paper
Entrepreneurship as organizing: selected papers of william b gartner
No full textThis book draws together William B. Gartner's key contributions to entrepreneurship research over the past 25 years. An original introduction by the author offers a comprehensive overview and analysis of his work as it pertains to the development of entrepreneurship as a scholarly field, and the articles demonstrate the many ways in which his research has explored entrepreneurship in relation to individuals, firms, environments, and processes
Game Engine-based Point Cloud Visualization and Perception for Situation Awareness of Crisis Indoor Environments
No full textBecause unknown interior layouts can have serious consequences in time-sensitive situations, crisis response teams request many potential solutions for visualizing indoor environments in crisis scenarios. This research uses a game engine to directly visualize point cloud data input of indoor environments for generating clear interaction between the environment and viewers, to aid decision-making in high-stress moments. The prospective final product is an integration of game-oriented visualization and cartography, hosted within Unreal Engine 4 (UE4), allowing users to navigate throughout an indoor environment, and customizing certain interaction features. The UE4 project consists of 4 modules: data preprocessing, render style, functional module, and user interface. Finally, this research uses a single-floor indoor point cloud dataset collected from a building in Rotterdam, the Netherlands for the implementation.GIS Technologi
A2B: Identifying movement patterns from largescale Wi-Fi based location data
No full textThe distribution of people in buildings, the occupancy of lecture-, work- and study places and the accessibility of facilities are essential information at university campuses who have to cope with limited and even shrinking budgets and huge, rising real estate costs. Only little insight is gained in both occupancy and movement patterns with traditional counting techniques and user-based questionnaires. Management teams state that rooms and facilities are hardly used, though staff and students complain about overcrowded facilities and limited flexibility. Actual and accurate data on a 24/7 scale with high-granularity is missing.In general Facility- and Asset Management lacks efficient methods for realtime, comprehensive and high-granularity information of location, capacity and use of tangible and intangible assets. Asset management could benefit from more detailed, more accurate and longitudinal data on assets, providing more insight into efficiency and effectiveness on different levels of scale through time.Existing technologies could provide a platform delivering those required insights. Navigation- and communication technologies such as GNSS, Wi-Fi, Bluetooth, RFID can be used to ‘locate’ users, estimate intensities and reveal patterns of movement and patterns of use. For Asset management indoor localisation is essential.OLD Urban DesignOLD Department of GIS Technolog
In_sight: Using Existing Wi-Fi networks to Provide Information on Occupancy and Exploitation of Educational Facilities using at Delft University of Technology
No full textThe distribution of people in buildings, the occupancy of lecture-, work- and study places and the accessibility of facilities are essential information at university campuses who have to cope with limited and even shrinking budgets and huge, rising real estate costs. Only little insight is gained in both occupancy and movement patterns with traditional counting techniques and user-based questionnaires. Management teams state that rooms and facilities are hardly used, though staff and students complain about overcrowded facilities and limited flexibility. Actual and accurate data on a 24/7 scale with high-granularity is missing.In general Facility- and Asset Management lacks efficient methods for realtime, comprehensive and high-granularity information of location, capacity and use of tangible and intangible assets. Asset management could benefit from more detailed, more accurate and longitudinal data on assets, providing more insight into efficiency and effectiveness on different levels of scale through time.Existing technologies could provide a platform delivering those required insights. Navigation- and communication technologies such as GNSS, Wi-Fi, Bluetooth, RFID can be used to ‘locate’ users, estimate intensities and reveal patterns of movement and patterns of use. For Asset management indoor localisation is essential.OLD Urban DesignOLD Department of GIS Technolog
Food for nought
No full textThe short story, "Food for nought", is written by the listed author above, Shashi Bhat. Now in its 48th year, Best Canadian Stories has long championed the short story form and highlighted the work of many of the writers, throughout their respective careers, who have gone on to shape the Canadian literary canon. Caroline Adderson, Margaret Atwood, Clark Blaise, Lynn Coady, Mavis Gallant, Zsuzsi Gartner, Douglas Glover, Steven Heighton, Isabel Huggan, Mark Anthony Jarman, Norman Levine, Rohinton Mistry, Alice Munro, Leon Rooke, Diane Schoemperlen, Russell Smith, Linda Svendsen, Kathleen Winter, and many others have appeared in its pages over the years and decades, making Best Canadian Stories the go-to source for what’s new in Canadian fiction writing for close to five decades. A continuation of not only a series, but a legacy in Canadian letters. --From publisher description.Published
Track-id: Activity Determination based on Wi-Fi Monitoring
No full textThe distribution of people in buildings, the occupancy of lecture-, work- and study places and the accessibility of facilities are essential information at university campuses who have to cope with limited and even shrinking budgets and huge, rising real estate costs. Only little insight is gained in both occupancy and movement patterns with traditional counting techniques and user-based questionnaires. Management teams state that rooms and facilities are hardly used, though staff and students complain about overcrowded facilities and limited flexibility. Actual and accurate data on a 24/7 scale with high-granularity is missing.In general Facility- and Asset Management lacks efficient methods for realtime, comprehensive and high-granularity information of location, capacity and use of tangible and intangible assets. Asset management could benefit from more detailed, more accurate and longitudinal data on assets, providing more insight into efficiency and effectiveness on different levels of scale through time.Existing technologies could provide a platform delivering those required insights. Navigation- and communication technologies such as GNSS, Wi-Fi, Bluetooth, RFID can be used to ‘locate’ users, estimate intensities and reveal patterns of movement and patterns of use. For Asset management indoorlocalisation is essential.OLD Urban DesignOLD Department of GIS Technolog
Building Rhythms: Reopening the Workspace with Indoor Localisation
No full textIndoor localisation methods are an essential part for the management of COVID-19 restrictions, social distancing, and the flow of people in the indoor environment. Moving towards an open work space in this scenario requires effective real-time localisation services and tools, along with a comprehensive understanding of the 3D indoor space. This project’s main objective is to analyse how ArcGIS Indoors can be used with location awareness methods to elaborate and develop space management tools for COVID-19 restrictions in order to reopen the workspace for TU Delft Campus. This was accomplished by using six Arduino micro controllers, which were programmed in C++ to scan all available Wi-Fi fingerprints in the east wing of the Faculty of Architecture and the Built Environment of TU Delft and send over the data to an ArcGIS Indoor Information Model (AIIM). The data stored on the AIIM is then accessed using the app on the user’s Android device using REST Application Programming Interface (API) where a kNN based matching algorithm then identifies the location of the user. The results show that the localisation is not consistent for rooms that are directly above each other or share common access points. However, when functioning to locate different tables inside a room, the system proved to uniquely distinguish between the specific tables. As a result, we can conclude that based on the size of the rooms, more Arduino devices should be installed to achieve an ideal accuracy. Finally, recommendations are made for the continuation of this research.GIS Technologi
Thermal behaviour of lithium-ion batteries and the implications on submarine system design
No full textSubmarines face an ongoing (technical) battle to improve the operational effectiveness by increasing the submerged endurance and range. Installing lithium-ion batteries on new or refitted diesel-electric submarines has become increasingly interesting based on their relatively high energy density and specific energy. The characteristics compared to the currently implemented lead-acid batteries are known, meaning that the implementation of lithium-ion batteries on submarines can increase the submerged range and endurance based on their better specifications. Additionally, lithium-ion batteries require less maintenance and provide a relatively longer life expectancy compared to lead-acid batteries. However, lithium-ion batteries can develop a thermal runaway: a process which exponentially generates heat, leading to the risk of an explosion and fire. A thermal runaway can be initiated based on internal failure mechanisms and external causes, such as exceeding critical temperature limits. Understanding of the thermal behaviour of lithium-ion batteries is essential to reduce the probability of a thermal runaway. The probability of initiating a thermal runaway can be further reduced by auxiliary systems such as a cooling system and a battery management system. The main objective of this research is therefore to investigate the implications on preliminary submarine system design based on the thermal behaviour of lithium-ion batteries and to quantify the thermal behaviour and design implications. The relevance is that by quantifying the thermal behaviour, the cell temperatures can be estimated. As a consequence, awareness of the risk of a thermal runaway is established, while at the same time input for the dimensioning of a cooling system is provided. An analysis has been performed concerning the safety of lithium-ion batteries. The causes, the characteristics and the prevention methods regarding a thermal runaway have been studied in this research. The four stages of a thermal runaway are discussed, as well as the generation of toxic and flammable gasses. Moreover, the sources of heat generation in a lithium-ion cell have been described. The heat generation typically consists of reversible and irreversible heat components, of which the relative contributions have been described based on the charge or discharge rate. To support preliminary submarine design, a thermal model of a lithium-ion battery module has been created. The first model that has been created describes the electric behaviour of a lithium-ion battery cell that is typically implemented in marine applications. EST-Floattech has provided technical specifications of the lithium-ion pouch cell that is implemented in their modules. The second model determines the generated heat based on the electrical model and cell specific properties. The third model simulates a lithium-ion battery module, where heat is generated by multiple cells and heat transfer rates with the surroundings are modelled. A lumped thermal capacity approach has been implemented and cooling is modelled to provide insight in typical cooling rates regarding thermal management. Conclusions have been drawn regarding the temperatures of the cells in the module based on three operational profiles. Based on a submerged sprint, C-rates up to 1.0C can be sustained without cooling while remaining below the critical temperature limit of 55°C. For consecutive cycles during a covert transit or covert surveillance, cooling is typically necessary. Only at C-rates below 0.3C a covert transit can be sustained. Typical cooling rates vary between 60 W and 185 W, where the effects of cooling are most significant for covert transit and covert surveillance. Module optimisation provides increased cooling rates while increasing the energy density and specific energy. This results in a decreased mass and volume of the module, resulting in a significant amount of extra space in the entire battery system on board of a submarine. The largest improvement in thermal management can be realised by choosing the right conductive filler. Moreover, the cooling capacity has a significant influence on the cell temperatures. Cell temperatures remain relatively constant after the fourth cell in a row, meaning that modules are typically not limited by the number of cells.Marine Technolog
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