Miracle-dz/UniFAR-FTUs huggingface dataset:
Handbook of electrical power system dynamics : modeling, stability, and control

This book aims to provide insights on new trends in power systems operation and control and to present, in detail, analysis methods of the power system behavior (mainly its dynamics) as well as the mathematical models for the main components of power plants and the control systems implemented in dispatch centers. Particularly, evaluation methods for rotor angle stability and voltage stability as well as control mechanism of the frequency and voltage are described. Illustrative examples and graphical representations help readers across many disciplines acquire ample knowledge on the respective subjects.
DETAILED STUDY OF ACCIDENT EXPERIENCE IN CONSTRUCTION AND MAINTENANCE ZONES

The objective of this study was to identify means by which improved traffic control can improve traffic safety in work zones. The accident data base (1982-86) was derived from the coded information stored in the computerized data bank of the Ohio Department of Highway Safety. (The department has since been renamed the Ohio Department of Public Safety.) Coding errors and unreported accidents were recognized as limitations of the data base. Statistical analysis of statewide aggregate data failed to identify cause-and-effect relationships between accident characteristics and traffic control. The study was expanded to include the review of individual accident reports at nine construction sites. This approach proved very effective. The accident reports, which always included a sketch and a description of the event, often indicated that specific traffic control procedures and standards needed to be improved. It has become clear to the researchers that certain types of accidents at a given work zone can suggest specific problems with traffic control plans and/or with the implementation of the plans. Monitoring work zone accidents as they happen is of course the best way to recognize and eliminate problems. In fact, independently from this study, a Work Zone Task Force of the Ohio Department of Transportation that included engineers with intimate knowledge of work zone traffic control practices based on field experience has already recommended improvements in traffic control standards and practices.
Deciding about Design Quality: Value judgements and decision making in the selection of architects by public clients under European tendering regulations

In the past few years the image of tender procedures in which Dutch public clients selected an architect has been dominated by distressing newspaper headlines. Architects fear that the current tender culture will harm the quality of our built environment due to a potential lack of diversity, creativity and innovation in architectural design. Due to potential risks clients often allow legal requirements to overrule their actual wishes. This PhD research addresses the origin of the problems as currently experienced by public commissioning clients in architect selection and proposes pragmatic implications for future practice. It is therefore of interest for commissioning clients, management consultants, policy makers and legal advisors but also for designers and researchers in the field of architecture and decision making. Based on four empirical cases the author shows that during architect selection the rational legal requirements clash with the psychological process of decision making. Decision makers only start to make sense of the proposed designs once they are confronted with the alternatives. It is therefore almost impossible for clients to design a selection procedure and announce the criteria and weighting factors up front, as required by procurement law. The scientific underpinning of the findings is found in four theoretical perspectives on value judgements in design and the latest decision theories in which sensemaking, emotion, intuition, and expertise play prominent roles. The thesis proposes fifteen factors for a successful design of a tender procedure to select an architect. It also offers recommendations for change of the current Dutch practice.
Distance Education: A Cost Analysis.

Degree Type Thesis Date of Award 1992 Degree Name Master of Science Department Curriculum and Instruction Abstract Today, the technical capabilities exist for all schools to provide effective distance education opportunities. While the technologies do offer solutions to enable school districts to improve their curricula and learning experiences, they also create new problems. They are expensive and complicated. There are a growing number of efforts to make telecommunication infrastructure and information resources available; however, access to telecommunication resources varies considerably in different locations (U. S. Congress, 1989). There can be large differences in estimated costs and actual expenditures (Feasley, 1982). There are price and quality variances (Eicher, 1987). It is difficult to analyze and compare costs because of the differing variables among the technologies. Currently there is not a large body of valid data concerning the costs of various systems (Jefferson & Moore, 1990). One major question asked by administrators, school boards, and policymakers is, How much does distance education cost? Distance education systems involve cost commitments that are not easily modified. The purchases must be used for a number of years. Those responsible for making these large capital investments should have reliable evaluation data available to make sensible decisions. There are few studies that specify detailed costs for the three transmission methods. Current cost studies are general in nature. These studies do not specifically compare transmission costs by specific distances. Few studies compare compressed and full motion video costs. There is abundant technical information regarding the specific technologies, but it is not written in the context of distance education. It is difficult to find in one location, complete, nontechnical information listing major cost variables affecting each transmission system and classroom equipment. Educators desiring to execute distance education systems in Iowa are unfamiliar with sources to aid in planning. Educators lack information on expert sources to supply cost and installation details. A study detailing specific variables contributing to the total costs of creating a distance education system would be helpful to distance educator planners. DOI https://doi.org/10.31274/rtd-180813-228 Publisher Digital Repository @ Iowa State University, http://lib.dr.iastate.edu Copyright Owner Judy Irene Book Jones Copyright Date 1992 Language en File Format application/pdf File Size 201 pages Recommended Citation Jones, Judy Irene Book, "Distance education: a cost analysis " (1992). Retrospective Theses and Dissertations. 302. https://lib.dr.iastate.edu/rtd/302  Download
An Experimental Study of Flexural Cracking in Reinforced Concrete

The results are presented of an experimental study of flexural cracking in reinforced concrete members. The time-dependent effects of creep and shrinkage under constant sustained loads on crack widths and crack spacings were measured, in addition to the effects caused by increasing applied loads. In the short-term tests (12 specimens), the location and width of flexural cracks were monitored under increasing load up to failure in order to gain a clearer insight into the mechanisms of flexural cracking. In the long-term tests (an additional 12 specimens), the time-dependent development of cracking under constant sustained loads was measured, including the location of cracks and the gradual increase in crack widths. The experimental results provide benchmark data to be used subsequently in the development and calibration of analytical models to simulate both short-term and time-dependent cracking in reinforced concrete members. The parameters varied in the study included the number of bars, the bar spacing and the cover. Deflections at mid-span, crack patterns, crack widths, steel strains and concrete surface strains at the steel level were recorded throughout the test, together with the properties of the concrete including compressive strength, tensile strength, elastic modulus and the creep and shrinkage characteristics. Finally, the experimental data is compared with existing approaches for crack control in beams and slabs and design recommendations are made.
High-Risk and Long-Term: Future Narratives of the Space Industry

This thesis examines the use of future narratives in high-risk industries, using the case study of the United Kingdom (UK) space industry. Situated at the intersection of prior scholarly work on both futures and narratives, future narratives are stories, roadmaps or predictions that are orientated towards a long-term perspective – years or decades ahead – and seek to present a coherent outcome for a given technology. Drawing on a textual analysis of in-depth interviews conducted with actors in the public and private space sectors in the UK, this thesis proposes a three-part typology for understanding the forms of future narratives generated to promote, defend and further the cause of such technologies. The first is the finite future. This is a promissory narrative which has a clear goal, a clear end-point, and a number of systems for keeping those within a high-risk development programme tied to the success or failure of that programme. The second is the normalized future – this serves as a stark contrast to the promises of cutting-edge technology, innovation and exotic science from the earlier days of space technology, and positions space as a mundane and normalized technological industry that is merely ‘a part of everyday life’. The third is the adaptive future which consists of qualifications and other forms of credibility, and projects the viability and trustworthiness of a technology indefinitely into the future. By studying these narratives the thesis contributes to a body of work on high-risk technologies and the industries that produce them. The findings from the project lead me to argue that future narratives of this sort are crucial to understanding contemporary high-risk technologies; that the temporal dimension of such development programmes is of critical analytical importance; and that future narratives point the way towards subsequent research for understanding this particular form of technological development.
Microwave Heating in Moist Materials

The definition of “microwaves” is somewhat arbitrary; however microwaves are usually considered to be electromagnetic waves in the frequency range from 300 MHz to 300 GHz. Before World War II, there is little evidence of work on radio frequency or microwave heating; however Kassner (1937b) mentions industrial applications of microwave energy in two of his patents on spark-gap microwave generators (Kassner, 1937a, 1937b, 1938). Unfortunately early studies in radio frequency heating concluded that microwave heating of food stuffs would be most unlikely because the calculated electric field strength required to heat biological materials would approach the breakdown voltage of air (Shaw & Galvin, 1949). A fortuitous discover by Spencer that microwave energy could heat food (Murray, 1958) lead to a series of patents (Spencer, 1947, 1949, 1952) and the development of microwave cooking equipment. The major advantages of microwave heating are its short start-up, precise control and volumetric heating (Ayappa et al., 1991); however microwave heating suffers from: uneven temperature distributions (Van Remmen et al., 1996; Brodie, 2008); unstable temperatures (Vriezinga, 1996, 1998, 1999; Vriezinga et al., 2002); and rapid moisture movement (Brodie, 2007b). This chapter will explore the theory and practice of microwave heating in moist materials.
The road safety implications of unlicensed driving : A survey of unlicensed drivers

This report documents the findings of a survey of 309 unlicensed driving offenders interviewed at the Brisbane Central Magistrates Court. A wide range of offenders participated in the study including disqualified and suspended drivers, expired licence holders, drivers without a current or appropriate licence, and those who had never been licensed. The results indicate that unlicensed drivers should not be viewed as a homogenous group. Significant differences exist between offender types in terms of their socio-demographic characteristics, whether they were aware of being unlicensed or not, their behaviour while unlicensed, and the factors contributing to their behaviour. Among some offenders, unlicensed driving appears to be indicative of a more general pattern of non-conformity and illegal behaviour. While many offenders limited their driving while unlicensed, others continued to drive frequently. Moreover, almost one-third of the sample continued to drive unlicensed after being detected by the police. One of the strongest predictors of both the frequency of unlicensed driving and continued driving after detection was whether the offenders needed to drive for work purposes when unlicensed. While there was some evidence that offenders attempted to drive more cautiously while unlicensed, this was not always reflected in their reported drink driving or speeding behaviour. The results highlight the need to enhance current policies and procedures to counter unlicensed driving. In particular, there is a need to examine current enforcement practices since over one-third of the participants reported being pulled over by the Police while driving unlicensed but not having their licence checked.
Modern Communications Jamming Principles and Techniques

This newly revised and greatly expanded edition of the popular Artech House book, Modern Communications Jamming Principles and Techniques, provides an up-to-date, exhaustive treatment of the techniques and methods available to create countermeasures against anti-jam, over-the-air communications. The Second Edition features a wealth of new material on urban warfare, including a computer simulation of EW architecture alternatives for land-based forces based on urban constraints. The new edition also includes an expanded section on time-hopped spread spectrum communications, more details on modern communication system technologies such as CDMA and OFDM, and an in-depth discussion on sources of urban noise. This practical resource is focused on showing you how to design and build jammers specifically targeted at spread spectrum, anti-jam communications. Moreover, you find assistance in evaluating the expected performance of jamming systems against modern communications systems, and discover the best waveform to use to counter communication systems designed to be effective in jamming environments. While mathematical derivations in general are avoided, the book presents error rate performance equations for most modern digital anti-jam communication systems.
Texture analysis from CT in discrimination of pancreatic ductal adenocarcinoma and hypovascular pancreatic neuroendocrine neoplasm in the portal-venous phase

Aim: To evaluate the discrimination ability of computed tomography (CT) texture analysis between pancreatic ductal adenocarcinoma (PDAC) and hypovascular pancreatic neuroendocrine neoplasm (PNEN). Materials and Methods: Preoperative CT examinations of 49 patients with pathologically proven PDAC (35) and hypovascular PNEN (14) were evaluated retrospectively. Images in the portal vein phase of each tumor were assessed by two radiologists. Differences in texture features between PDACs and PNENs were analyzed with Mann Whitney-U test and logistic regression analysis. Results: Patients with PNEN (50.4 ± 11.7 y) were significantly younger than the patients with PDAC (62.0 ± 11.1y) (p = 0.002). Nine CT texture features were found statistically significant between groups. NGLDM and GLZLM texture features showed the best diagnostic performance on multivariate analysis. Between these parameters, NGLDM_ Busyness showed the best diagnostic performance with the AUC value of 0.865. Combination of NGLDM_ Busyness and GLZLM_LZLGE improved the diagnostic performance at a significant level (AUC = 0.906, 95% CI = 0.747-0.988, p < 0.05). Conclusion: CT texture features of single portal venous phase images may help to discriminate hypovascular PNEN from PDAC.
Immune-inspired self-healing swarm robotic systems

The field of artificial immune system (AIS) is an example of biologically inspired computing that takes its inspiration from various aspects of immunology. Techniques from AIS have been applied in solving many different problems such as classification, optimisation and anomaly detection. However, despite the apparent success of the AIS approach, the unique advantages of AIS over and above other computational intelligence approaches are not clear. In order to address this, AIS practitioners need to carefully consider the application area and design methodologies that they adopt. It has been argued that of increasing importance is the development of a greater understanding of the underlying immunological system that acts as inspiration, as well as the understanding of the problem that need to be solved before proposing the immune-inspired solution to solve the desired problem. This thesis therefore aims to pursue a more principled approach for the development of an AIS, considering the application areas that are suitable based on the underlying biological system under study, as well as the engineering problems that needs to be solved. This directs us to recognise a methodology for developing AIS that integrates several explicit modelling phases to extract the key features of the biological system. An analysis of the immunological literature acknowledges our immune inspiration: granuloma formation, which represents a chronic inflammatory reaction initiated by various infectious and non-infectious agents. Our first step in developing an AIS supported by these properties is to construct an Unified Modelling Language (UML) model agent-based simulation to understand the underlying properties of granuloma formation. Based on the model and simulation, we then investigate the development of granuloma formation, based on the interactions of different signalling mechanisms and the recruitment of different cells in the system. Using the insight gained from these investigation, we construct a design principles to be incorporated into AIS algorithm development. The design principles are then instantiated for a self-healing algorithm for swarm robotic systems, specifically in the case of swarm beacon taxis when there exist failure of robots’ energy in the systems. The self-healing algorithm, which is inspired by the granuloma formation of immune systems is then tested in swarm robotics simulation. To conclude, we analyse the process we have pursued to develop our AIS and evaluate the advantages and the disadvantages of the approach that we have taken, showing how a more principled approach with careful consideration the application area can be applied to the design of biologically-inspired algorithms.
VISION User Guide - VISION (Verifiable Fuel Cycle Simulation) Model

The purpose of this document is to provide a guide for using the current version of the Verifiable Fuel Cycle Simulation (VISION) model. This is a complex model with many parameters; the user is strongly encouraged to read this user guide before attempting to run the model. This model is an RD this model represents a dynamic rather than steady-state approximation of the nuclear fuel system. VISION models the nuclear cycle at the system level, not individual facilities, e.g., “reactor types” not individual reactors and “separation types” not individual separation plants. Natural uranium can be enriched, which produces enriched uranium, which goes into fuel fabrication, and depleted uranium (DU), which goes into storage. Fuel is transformed (transmuted) in reactors and then goes into a storage buffer. Used fuel can be pulled from storage into either separation of disposal. If sent to separations, fuel is transformed (partitioned) into fuel products, recovered uranium, and various categories of waste. Recycled material is stored until used by its assigned reactor type. Note that recovered uranium is itself often partitioned: some RU flows with recycled transuranic elements, some flows with wastes, and the rest is designated RU. RU comes out of storage if needed to correct the U/TRU ratio in new recycled fuel. Neither RU nor DU are designated as wastes. VISION is comprised of several Microsoft Excel input files, a Powersim Studio core, and several Microsoft Excel output files. All must be co-located in the same folder on a PC to function. We use Microsoft Excel 2003 and have not tested VISION with Microsoft Excel 2007. The VISION team uses both Powersim Studio 2005 and 2009 and it should work with either.
GENDERED MOBILITY: A STUDY OF WOMEN'S AND MEN'S RELATIONS TO AUTOMOBILITYIN SWEDEN

The aim of this thesis is to explore the gendered nature of automobility in order to gain a better understanding of how differences in women and men's relations to the car may affect adaptability to a sustainable transportation system. Individuals' relations to the car and to driving are studied by problematizing the car as a domestic, gendered technology. A questionnaire survey was designed and sent out to 1,500 individuals in Goeteborg, Sweden in 1996. Women's and men's relations to the car are analysed in terms of its appropriation by individuals as an object, an activity and as a realm of knowledge. A variety of factors are identified through this survey which clarify some of the differences in women's and men's car use. They are presented in terms of individuals' access, experiences, and attitudes to the car, and in their proclivity to change car use. Differences are found between women and men in the availability of the car to individuals and in the appropriation of the car as an object and realm of knowledge, suggesting that the car is experienced as being more suitable for men than it is for women. The results of this thesis indicate that car use is influenced by factors relating to gendered articulations of power. This implies that women's and men's car use will be affected differently by measures which aim at reducing the environmental impact of the car. If a sustainable transportation system includes an awareness of equality, then political initiatives should not exacerbate existing inequalities. Nevertheless, as the results of this thesis suggests, if the transportation system in Sweden is based upon automobility, then there are clear conflicts between goals of equality and goals of sustainability. (A)
Dicrotic notch detection using wavelet transform analysis

The objective of this research was to devise a method of accurately and consistently extracting the dicrotic notch from the aortic blood pressure signal for various heart rates and arrhythmias. The aortic blood pressure signal has been analyzed by calculating the wavelet transform at several scales to consistently detect the temporal location of the dicrotic notch. The simultaneous locations of the peaks in the wavelet transforms of the first derivative of the aortic pressure waveform across 2 consecutive scales corresponds to the location of the dicrotic notch. A final algorithm analyzes the transform results and labels the notch point. Locating the dicrotic notch is critical for analyzing systolic time interval.