Miracle-dz/UniFAR-FTUs huggingface dataset:
Behaviour and operation of pumped storage hydro plants.

The thesis describes the development of a generic nonlinear computer model of a pumped storage hydroelectric scheme. The model combines the hydraulic, electrical and control systems. In particular, this model includes the water hammer effects, the hydraulic coupling in the common water supply tunnel, the power system stiffness and the electrical coupling between the generator and the power system. The benefit of the simulation is that it gives insight into the plant characteristics and improves understanding of the physical phenomena involved. A specific case of the model for Dinorwig power station is tested against the plant responses and establishes a good degree of confidence in the simulation. The model is used to evaluate governor performance and establish stability boundaries for various operating conditions. The model is also used to design a new black-start regime which allows Dinorwig to energise the power system after blackout, with individual units picking up incremental loads up to 15% of machine rating while ensuring that frequency deviations remains within limits. Another application of the model is to explain why a period of sustained power oscillation occurred at Dinorwig and to identify under what circumstances this can take place. Linearised system models are used for governor tuning and root locus and Bode plot methods applied to establish the optimum governor settings for different operation conditions. The results demonstrate the significance of hydraulic coupling and the power system (grid) size on governor tuning. The final part of the work addresses conversion of the model to run in real-time and interfacing it with an actual unit governor. The results demonstrate the practicality of the hardware-in-the-loop simulation as a technique for safely implementing and testing new controllers or enhancements to the current controller.
Information literacy competence of librarians in South West Nigerian university libraries

The purpose of this study was to determine librarians’ information literacy skills and provide reliable data to support the study recommendations. The study used the survey approach. The sampling frame is the National Universities Commission approved list of universities in Nigeria as at August, 2012. Sampling of participating universities in the Southwest was by convenience sampling, a non-probability sampling technique, while that for the study participants (librarians) was census. Except for their understanding of the role of natural language, reference citation, encyclopaedias, periodicals and search engines, the study revealed weaknesses in librarians’ knowledge of each of the steps in the information research process, from identifying the concepts to using the results. This suggests that librarians are clearly deficient in the essential skills required for successful information research process. The study thus confirms the perceived negative impression of librarians’ information literacy competency. The practical implication is that library users, which include the students, will not be able to receive proper instruction in information literacy skills and may therefore not be information literate. This will affect their effectiveness, efficiency and productivity at work after graduation. The social implication is that their graduates and other library users may not be able to function effectively in today’s information society. To remedy the deficiencies, the study recommends regular training and re-training through professional development workshops, librarians’ access to regular use of the Internet, and the review of the curriculum of the library schools to incorporate the teaching of Information Literacy with particular emphasis on the practical components.
DFSS in marketing: designing an innovative value co-creation campaign

Design for Six Sigma (DFSS) is considered an approach which generates positive quality especially for new products and services. A first time right design is a key success factor for business performance. This paper is an attempt to introduce DFSS efficiency to the marketing domain in a cross-disciplinary approach. Quality attributes influence customer engagement and adequately designed, they sustain value co-creation and innovation for business management sustainability in a global competitive marketplace. The paper discusses the real-life case when DFSS was implemented in designing a successful co-creation marketing campaign.
Investigation Of Charge Control-Related Performances In Double-Gate SOI MOSFETs

In this work we have shown the benefits of (even sub-0.1 μm) double-gate SOI MOSFETs for digital and analog performances. We verified applicability of the quasi double-gate technique with regard to actual double-gate devices and demonstrated that it is valid in strong inversion regime only. Using this technique instead of real double-gate in the weak inversion regime gives a large error and is not acceptable.
Alluvial fans and fan deltas in the Paparoa Formation, Greymouth Basin: a new rift model

ABSTRACT Sedimentary facies analysis of conglomerate deposits in the Greymouth Rift Basin has identified the latest Cretaceous to Paleocene alluvial fan and fan delta environments on the northwestern side. The Gravelly Braided River Facies Association is interpreted as high energy, braided river streamflow in a streamflow-dominated alluvial fan environment. The Gravelly Delta Front Facies Association was deposited by high bedload mouth bars and channel avulsion. The Gravelly Prodelta Facies Association is interpreted as high-density turbidity currents, and subaqueous debris flows in a fan delta slope environment. Bedding geometries suggest the fan deltas were Hjulström-types formed on lower angle slopes. The gradual decrease in conglomerate thickness from northwest to southeast indicates that the primary basin bounding fault was located offshore to the northwest, most likely the Cape Foulwind-Canoe Fault Zone. Overall facies distribution and paleoflow directions indicate the Greymouth Basin formed as a half-graben in a purely extensional setting with no strike-slip movement. The presence of contemporaneous sub-basins in the West Coast region suggests they likely experienced similar depositional history to the Greymouth Basin. Our findings agree with previous models from the Taranaki Basin that indicate that rifting was purely extensional, suggesting that the West Coast-Taranaki Rift System recorded primarily orthogonal extension.
Slanted strip pair circularly polarized microstrip antennas

Currently, narrow bandwidth wireless card systems have spread widely in Japan. In these systems, the bandwidth can be nearly one percent and high gain circularly polarized base station antennas are required. Typical examples are the 2.4 GHz band wireless card system and ETC (Electronic Toll Collection) system. Widely used antennas for these systems are circularly polarized microstrip array antennas. In this paper, we present, for use in these systems, a slanted strip pair (SSP) circularly polarized microstrip antenna (CPMA), which is one of the herringbone array antennas. In Ito et al. (1978), the change of field strength due the change of gap between the feed line and strip element, was discussed. However, there are no data to design practical CPMAs. This paper first investigates the coupling characteristics between the feed line and one slanted strip, and next investigates in detail antenna characteristics of the CPMA element consisting of a pair of slanted strips, that is, S-parameters, gain, axial ratio, and radiation pattern. Then, we show the characteristics of a four element array. These data seem to be useful to design the CPMA.
Fuel cell drive train topologies - computer analysis of potential systems

Knowledge as to the optimal design, cost and efficiency of fuel cell powered vehicles is rudimentary. Additionally the data which does exist is fragmentary being scattered across many sources, scientific papers, government reports, patents and industrial products. Surprisingly, few studies have integrated these elements into a cohesive review of the entire drive train [1]. This study developed simulation models for eight different types of drive train topologies based on a common vehicle chassis. Fuel cell, fuel cell hybrid and electric drive trains were simulated to compare and contrast the performance of each different vehicle type. The models were tested with two different driving cycles and subjected to a range of performance tests. The aim of the testing was to evaluate the performance and efficiency of each topology and select a topology to carry forward for further optimisation work aimed at improving the cost, efficiency and marketability of the fuel cell vehicle.
Identificación de sistemas

Identificacion es la obtencion de modelos dinamicos, ecuaciones para describir el comportamiento de un sistema a traves del estudio de las senales de entrada y de salida. Podria definirse entonces como el campo de construir modelos a partir de datos experimentales, con el fin de tener herramientas fundamentales en el diseno sistemas de control.
Management: Challenges in the 21st Century

Part 1 Meeting the challenges of the 21st century: management and managers - yesterday, today and tomorrow evolution of management thought social responsibility and ethics. Part 2 Planning challenges in the 21st century: planning in the contemporary organization strategic planning in a global environment effective managerial decision-making decision-making tools and techniques. Part 3 Organizing for challenges in the 21st century organizing for quality, productivity and job satisfaction designing the contemporary organization managing human resources organizational culture, change and development. Part 4 Leadership challenges in the 21st century: communicating effectively within diverse organizations understanding leadership in a dynamic environment effectively managing individual and group behaviour motivating organizational members. Part 5 Control challenges in the 21st century: organizational control in a complex business environment productivity and quality in operations information technology and control.
Explaining cost overruns in infrastructure projects: a new framework with applications to Sweden

The aim is to both develop a new theory-based framework for analysing cost overruns, and to use this for an empirical study of cost overruns in infrastructure projects in Sweden. The conceptual part is based on a literature review and the empirical part is primarily based on a questionnaire to project managers. The framework has a descriptive part comprising two dimensions: when, during the process, the cost overrun arose and what part of the cost function was responsible: change in the product, change in quantities of the inputs and change in price of inputs. The explanatory part is a development of Flyvbjerg’s theories and identifies four possible explanations: political/strategic aspects, psychological aspects, competence-related aspects and bad luck. The result from the empirical study is that most cost overruns occur in the initiation and planning stages up to the final design and are related to design changes and increases in the amount of inputs needed because of technical and administrative problems. Of the explanatory factors, there is most support for lack of competence and optimism bias.
Occupancy detection and prediction from electricity consumption data in smart homes: application to a Portuguese case-study

ABSTRACT This research proposes an investigation on the problem of detecting and predicting occupancy by using solely readily available electricity consumption data, obtained from smart metres. The following research questions are defined: (1) Is it possible to predict occupancy by using solely electricity consumption data? ; (2) Is it possible to use a single classification model to monitor occupancy in multiple households? The findings show that an occupancy detection accuracy of up to 92% can be achieved by using solely electricity consumption data. The problem of generalizing the classification model, i.e. using a single classification model to monitor occupancy in multiple households, is also addressed. It is found that an occupancy detection accuracy of up to 83% is achievable in this case. Regarding occupancy prediction, occupancy in multiple households with an accuracy of up to 75% is obtained, by using solely electricity consumption data. For both occupancy monitoring and prediction, it is found that households with a low level of occupancy can benefit more from these systems.
Gemcitabine radiosensitization primes irradiated malignant meningioma cells for senolytic elimination by navitoclax

Abstract Background Malignant meningioma is an aggressive tumor that requires adjuvant radiotherapy after surgery, yet there has been no standard systemic therapy established so far. We recently reported that malignant meningioma cells are highly sensitive to gemcitabine; however, it remains unknown whether or how gemcitabine interacts with ionizing radiation (IR) in malignant meningioma cells. Methods We examined the radiosensitization effects of gemcitabine using malignant meningioma cell lines and xenografts and explored the underlying mechanisms. Results Gemcitabine sensitized malignant meningioma cells to IR through the induction of senescence both in vitro and in vivo. Gemcitabine augmented the intracellular production of reactive oxygen species (ROS) by IR, which, together with cell growth suppression/senescence induced by this combination, was inhibited by N-acetyl-cysteine, suggesting a pivotal role for ROS in these combinatorial effects. Navitoclax, a senolytic drug that inhibits Bcl-2 proteins, further enhanced the effects of the combination of gemcitabine and IR by strongly inducing apoptotic cell death in senescent cells. Conclusion These results not only indicate the potential of gemcitabine as a candidate radiosensitizer for malignant meningioma, but also reveal a novel role for gemcitabine radiosensitization as a means to create a therapeutic vulnerability of senescent meningioma cells to senolytics.
Transparency in the food chain: policies and politics

The dissertation is organised in four parts. The first part (Chapter 2) sets the background. It explores the status quo and explains the need for transparency in the food chain. This chapter argues that transparency is a condition for responding to the set of changes that occurred in the food system during the last decades. The second part (Chapters 3, 4 and 5) presents the theoretical approaches that this dissertation draws on as well as the analytical perspective and methods used. Chapter three examines the theories and approaches most valuable for analyzing the process of promoting transparency in a multi-actor context. Having reviewed the major approaches, the dissertation? s own analytical perspective is presented in chapter four. We view the formation of policy outputs for transparency, as a result of both actor strategies and network structures. More specifically, the network is considered to set the context within which individual strategies can evolve. The way actors and network characteristics are operationalised and measured is presented in chapter five. We also present the dissertation? s methodology for the collection as well as analysis of data and case selection in this chapter. The third part (Chapters 6, 7, 8 and 9) presents the empirical analyses. Putting the model into force, chapters six and seven assess the political feasibility of efforts to improve transparency in the pork chain in the Netherlands and the EU respectively. In a similar vein, chapters eight and nine focus on the farmed-fish chain in the Netherlands and the EU respectively. Finally, the fourth part (Chapter 10) concludes the dissertation, interprets the results and discusses their implications for transparency and sustainability related policies and politics.
Perspectives on design creativity and innovation research

The aim of this extended editorial is to offer a perspective on design creativity and innovation research on the occasion of launching the International Journal of Design Creativity and Innovation. Thirty six members of the editorial board present their expectations, views, or opinions on the topics of the journal. All of these articles are presented in Section 2. In Section 3, summaries of the 36 articles are consolidated. This editorial also analyzes keywords from each of the articles, and the results are visualized in Section 4. The keyword analysis covers not only those words taken directly from each of the articles but also the implicit keywords that are suggested by the explicit ones. We believe this extended editorial will help the researchers, in particular young researchers, comprehend the essence of design creativity and innovation research and obtain a clue to tackle the new discipline.
A wideband 0.13 μm CMOS LC-VCO for IMT-advanced and UWB applications

This paper presents an LC voltage controlled oscillator (VCO) in a dual-band frequency synthesizer for IMT-advanced and UWB applications. The switched current source, cross-coupled pair and noise filtering technique are adopted in this VCO design to improve the performance of the phase noise, power consumption, voltage amplitude, and tuning range. In order to achieve a wide tuning range, a reconfigurable LC tank with 4 bits switch control is adopted in the core circuit design. The size of the entire chip with pad is 1.11 × 0.98 mm2. The test results show that the current dissipation of the VCO at UWB and IMT-Advanced band is 3 mA and 4.5 mA in a 1.2 V supply. The tuning range of the designed VCO is 3.86–5.28 GHz and 3.14–3.88 GHz. The phase-noise at 1 MHz frequency offset from a 3.5 GHz and 4.2 GHz carrier is −123 dBc/Hz and −119 dBc/Hz, respectively.
MODELLING STATION CONGESTION THE PEDROUTE WAY.

In railway stations and other major complexes (such as air terminals, buildings and sports centers), congestion associated with concentrated pedestrian movements is a common experience. As congestion increases, so do discomfort, frustration and concerns for safety. The aim of the planner must be to minimize congestion levels while ensuring that required safety standards are achieved. As an aid to station design, the PEDROUTE passenger simulation model has been developed. The program produces a detailed simulation of the movement of passengers around a station and provides statistics of their journey times and the delay and congestion they experience as they travel through the station. The program has been used extensively on a wide range of station projects covering new stations, improvements to existing stations and for safety audits.
25 GHz-spacing wavelength monitor integrated DFB laser module using standard 14-pin butterfly package

A 25 GHz-spacing wavelength monitor integrated DFB laser module has been successfully fabricated using standard 14-pin butterfly package. By employing separate temperature control for the LD and etalon, excellent wavelength locking performance (wavelength drift < /spl plusmn/0.2 pm) has been achieved using a simple analogue circuit.
On the Switching Control

The paper is discussing the measures able to reject the instability that may unexpectedly appear in particular conditions, in switching controllers applications. The switching controllers’ effect is explained by the combined effects of the unsuitable choice of the switching moments (in the first or third quadrants of the phase trajectory of the switching error) and of the temporal aliasing that can distort the digital control systems when the sampling rate is close to the frequency of the oscillations that are produced by the commutation. The correct switching moments are located into the second and fourth quadrants of the phase trajectory of the switching error, but an active preparation of the commutation may be simply achieved by using a tracking controller, that is driving the output of open loop controller to follow the output of the close loop controller, permanently minimizing the switching error. Simulations issued from a dc driver speed controller and from an aircraft are provided.
Scenario workshops: A useful method for participatory water resources planning?

This article reports on a scenario workshop (SW) for water resources management at the island of Naxos, Greece. The workshop was part of a European research project studying the advantages and limitations of different participatory methods in the context of the Water Framework Directive. It involved policy makers, scientists, business representatives, and citizens from different parts of the island. On the first day, participants worked to envision a sustainable development future for the island and its water resources. Discussion was inspired by four alternative water development scenarios prepared by the organizers. Participants' vision statements emphasized a diversified development path and balanced water solutions. On the second day, participants worked to plan the actions needed to realize their common vision. The SW turned out to be a good method to initiate a multipartner dialogue, to include new stakeholders in the water policy debate, and to a certain extent, to promote learning between participants. On the other hand, it did not appear well suited to resolve conflicts and aid decisions in the face of scientific complexity and uncertainty. SW seems to be a good method for the “upstream,” preparatory, capacity‐building tasks of a planning process but not for the production of substantive decision outputs such as consensual agreements or action plans. The Naxos experiment also raised the centrality of framing, participant selection, and facilitation in participatory processes.
Intelligent systems and technologies in rehabilitation engineering

INTRODUCTION New Technologies in Rehabilitation: General Trends SENSORIAL PROSTHESES A Retinal Prosthesis to Benefit the Visually Impaired Intelligent Techniques in Hearing Rehabilitation LOCOMOTOR PROSTHESES Sensory Feedback for Lower Limb Prostheses Multifunction Control of Prostheses using the Myoelectric Signal Selective Activation of the Nervous System for Motor System Neural Prostheses Upper Limb Myoelectric Prostheses: Sensory Control System and Automatic Tuning of Parameters PACEMAKERS AND LIFE-SUSTAINING DEVICES Computer-Aided Support Technology for Artificial Heart Control: Diagnosis and Hemodynamic Measurements Diaphragm Pacing for Chronic Respiratory Insufficiency Intelligent Systems in Heart Pacemakers ROBOTIC SYSTEMS AND ADVANCED MECHANICS Service Robots for Rehabilitation and Assistance Computerized Obstacle Avoidance Systems for the Blind and Visually Impaired Advanced Design Concepts for a Knee-Ankle-Foot Orthosis Index of Acronyms and Abbreviations Index of Terms
Properties of Concrete Incorporating Recycled Concrete Aggregates

Significant problems facing the construction industry include the increasing costs of raw materials and disposal costs associated with demolition wastes. The depletion of natural resources is leading to an increasing shortage of sources of natural aggregate for use in the production of concrete. Also the practice of dumping tonnes of concrete rubble is becoming more expensive as landfill sites are filled and transportation costs increase. This paper describes a laboratory based experimental project to examine the effect that cleanliness of recycled aggregate particles has on the fresh and hardened properties of concrete. Cleanliness of the aggregate particle relates to the amount of cement paste and mortar adhering to the surface of the aggregate. Concrete constituents were recycled from a cast block of concrete by breaking the concrete into manageable lumps and then crushing the rubble to differing degrees (100 to 1000 revolutions of drum) in a Los Angeles abrasion machine. The resultant aggregate particles were sorted visually into four cleanliness categories according to the amount of material adhering to the aggregate surface.