Miracle-dz/UniFAR-FTUs huggingface dataset:
Spiral waves on a 2-D array of nonlinear circuits

Spatio-temporal patterns formed in a 2-D array of Chua's circuits have been studied numerically. It has been found that spiral wave solutions can appear over a large range of parameters and some of their properties have been measured. This demonstrates that spiral wave dynamics can be studied in arrays of discrete electronic circuits, such as a 2-D array of Chua's circuits, where real-time results can be obtained. We also study the influence of small differences in the parameters of the circuits, as is the case in real electronic components, where a 5% device tolerance is typical. >
Three-phase PWM ac-ac buck converter small-signal modeling, dynamic analysis and control system design

Based on three-phase PWM ac/ac buck converter feeding general R-L load, carried out a valid method for its small-signal modeling. An equivalent circuit which is simple but contains all the key dynamical information of the original three-phase ac/ac converter was deduced by high/low-frequency reactance division and complex DQ transformation; Exact small-signal model was built-up and then found that the open-loop converter with inductive load approximately is a second order oscillating system and is critical stable; An effective compensator with good stability and fast dynamic response was brought forward, and the close-loop control system achieved a good performance.
Multilayer multiresonator circular microstrip antennas for broadband and dual‐band operations

Different methods to increase the bandwidth of a microstrip antenna, such as use of an air‐gap in‐between stacked resonators and the ground plane and planar multiresonators, are combined to achieve broad bandwidth with increased gain. A configuration with two gap‐coupled circular microstrip antennas on the top dielectric layer stacked with one coaxial‐fed circular patch on the bottom layer and an air‐gap in‐between two layers and the ground plane yield a bandwidth of 1093 MHz (47%) with a gain of 9.54 dB at the S‐band frequency of 2.325 GHz. Also, dual‐band response with broadside radiation and improved gain at both frequencies is achieved by suitably changing parameters of this configuration. Parametric studies of this configuration on dielectric substrate for both broadband and dual‐band operation are presented in this paper. The experiments are performed on broadband and dual‐band configurations, which are in agreement with the theoretical results. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 489–494, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21208
PENGARUH MEKANISME CORPORATE GOVERNANCE TERHADAP KINERJA KEUANGAN BANK PERKREDITAN RAKYAT

This research is aimed to find out the influence of Corporate Governance (CG) mechanisms to the banking financial performance. As a regulated industry, this research wants to prove that the banking financial performance can be influenced by CG mechanisms, not just its complience to the banking regulations. The samples in this research are the non-governmental rural banks (Bank Perkreditan Rakyat) in Central Java. The financial performance of the BPR is measured by the ratio of NPL, KPMM, LDR, and ROA. CG mechanisms are measured by its managerial ownerships, the proportion of the outside directors, and the number of board of directors (BOD), while the control variables are the size of the BPR and the firm age of the BPR. This research finds the CG mechanisms simultaneously influence the ratio of NPL, KPMM, and ROA. The managerial ownerships and the proportion of the outside directors partially also show a negative influence to the ratio of NPL and ROA, and the number of BOD in partial shows a negative influence towards the ratio of LDR. Keywords: corporate governance mechanism, financial performance, rural banks Penelitian ini bertujuan untuk menguji pengaruh mekanisme corporate governance (CG) terhadap kinerja keuangan perbankan. Sebagai industri yang teregulasi, penelitian ini ingin membuktikan bahwa kinerja keuangan perbankan dapat dipengaruhi oleh mekanisme CG-nya, bukan hanya sekedar pemenuhan ketentuan perbankan. Sampel penelitian adalah Bank Perkreditan Rakyat (BPR) swasta di Jawa Tengah. Kinerja keuangan BPR diukur dengan rasio NPL, KPMM, LDR, dan ROA. Mekanisme CG diproksi dengan kepemilikan manajerial, proporsi outside directors, dan jumlah board of directors (BOD), dengan variabel kontrol ukuran BPR dan umur BPR. Hasil penelitian menemukan mekanisme CG secara simultan berpengaruh terhadap rasio NPL, KPMM, dan ROA. Secara parsial, kepemilikan manajerial dan proporsi outside directors menunjukkan pengaruh negatif terhadap rasio NPL dan ROA, sedangkan jumlah BOD berpengaruh negatif terhadap rasio LDR. Kata kunci: mekanisme corporate governance, kinerja keuangan, BPR
Ambush Marketing im Rahmen der FIFA Fußball-Weltmeisterschaft 2010

Ambush Marketing kennzeichnet die Vorgehensweise eines Unternehmens, dem Publikum eines Sport-Events durch eigene Marketing-Masnahmen eine autorisierte Verbindung zum Event zu signalisieren, obwohl das betreffende Unternehmen keine legalisierten oder lediglich unterprivilegierte Vermarktungsrechte an dieser von Dritten gesponserten Veranstaltung besitzt. Im vorliegenden Beitrag werden zunachst die mannigfaltigen, in der Praxis zu beobachtenden Ambush-Marketing-Erscheinungsformen strukturiert und systematisiert. Darauf aufbauend wird anhand des Beispiels der FIFA Fusball-Weltmeisterschaft 2010 in Sudafrika analysiert, welche Ambush-Marketing-Formen von werbenden Unternehmen gegenwartig am haufigsten eingesetzt werden.
Role of Bruxism in Prosthetic Treatments- A Survey

Bruxism is a parafunctional habit of grinding of teeth and it results in an overload of occlusal loading that puts on more pressure on the teeth and the subsequent prosthetics causing them to fail, it is a common phenomenon affecting nearly 30% of the general population but is not looked into with deep detail. A survey of 16 questions was sent to 114 respondents. The questionnaire was made on Google Forms, it had several options for each question to get a response as accurate as possible. The incomplete responses were rejected and the data was collected and compiled using SPSS software. The compiled data was compared with the results of other studies and the important questions were discussed. This study conclusively found that the awareness of Bruxism and its effect on prosthetic treatments is high and that the data can be used in future treatments resulting in reduced failure of prosthetics due to habits such as
A New Modeling Method for Gray Feature

The Mean-Shift algorithm has very good tracking effect when the background is in a simple; but for a complex environment, tracking effect is not very ideal. Therefore, a new gray feature modeling method is proposed in this paper. Firstly, target in the tracking window is uniformly divided into even pieces. Then the pixel gray value of each block is calculated with subtraction of certain rules. Finally, the gray value of gray difference and the whole object value fusion are fused and established the object model. The object model that established not only contains the whole gray value information, but also contains the gray value differences between regions, has a more accurate description of the target, and then distinguish target from background better. The experiment results show that: the target model using the method in this paper to track based on the Mean-Shift algorithm, has good adaptability when the target is partially occluded and has better robustness for complex background.
The Nature and Incidence of Software Piracy: Evidence from Windows

This paper evaluates the nature, relative incidence and drivers of software piracy. In contrast to prior studies, we analyze data that allows us to measure piracy for a specific product - Windows 7 - which was associated with a significant level of private sector investment. Using anonymized telemetry data, we are able to characterize the ways in which piracy occurs, the relative incidence of piracy across different economic and institutional environments, and the impact of enforcement efforts on choices to install pirated versus paid software. We find that: (a) the vast majority of "retail piracy" can be attributed to a small number of widely distributed "hacks" that are available through the Internet, (b) the incidence of piracy varies significantly with the microeconomic and institutional environment, and (c) software piracy primarily focuses on the most "advanced" version of Windows (Windows Ultimate). After controlling for a small number of measures of institutional quality and broadband infrastructure, one important candidate driver of piracy - GDP per capita - has no significant impact on the observed piracy rate, while the innovation orientation of an economy is associated with a lower rate of piracy. Finally, we are able to evaluate how piracy changes in response to country-specific anti-piracy enforcement efforts against specific peer-to-peer websites; overall, we find no systematic evidence that such enforcement efforts have had an impact on the incidence of software piracy.
Biofuels: a technological perspective

Environmental issues, the growing demand for energy, political concerns and the medium-term depletion of petroleum has created the need for development of sustainable technologies based on renewable raw materials. Biofuels might help to meet the future energy supply demands as well as contributing to a reduction of green house gas emissions. Although this topic is highly controversial and many investigations are currently ongoing, this review is intended to give a brief overview about certain aspects of the complex biofuel issue, providing the latest update of the production and potential of biofuels in the transport sector including types of biofuel, feedstocks and technologies and some of the possible socio-economic, environmental and political implications of the widespread use of biofuels in our society.
A simple tool for the selection of IGBTs for motor drives and UPSs

This paper presents a simple method to predict the losses in the power semiconductors of an inverter where the output sinewave is obtained by pulse-width modulation of a high frequency carrier. This is accomplished by means of accurate device models based on a large number of measurements on a statistically representative population. Closed form expressions to calculate conduction and switching losses are also presented. With this information and the thermal environment specific to the application, a simple spreadsheet can be designed that provides a breakdown of losses and temperatures for any operating condition, including regeneration, locked rotor and third harmonic distortion. <<ETX>>
Negotiating Constraints to the Adoption of Agent-Based Modeling in Tourism Planning

Recent work exploring the use of agent-based models (ABMs) in a planning support role must be accompanied by an evaluation of the possible constraints that exist to the use of these models. This research presents an evaluation, from the perspective of professional tourism planners, of the potential for ABM of tourism dynamics to serve as a planning support system (PSS). Tourism is a phenomenon that is inherently individually based, with many interacting processes occurring at multiple scales, across space and time. This makes it a natural environment in which to test an ABM-based PSS. We conducted a series of interviews with tourism planners operating in the Canadian province of Nova Scotia, a region where tourism plays an important economic role. These interviews consisted of a general-needs overview, coupled with an assessment of a prototype model we developed, called TourSim. The interviews sought to uncover the specific planning tasks to which ABM would be best applied and identify areas of adoption constraint. The results of this research indicate that TourSim served as a scenario development tool, with a focus on data analysis and communication. Conversely, TourSim was reported to lack transparency, which affected the confidence that planners had in its results. This evaluation clarifies the path forward for developers looking to introduce ABM to planning practice.
The strategic workplace: development and evaluation

The US General Services Administration initiated a new programme that aims to understand better the linkages between the workplace and organizational effectiveness. This programme was motivated by the desire to bring the federal workplace into better alignment with the technological, organizational and demographic shifts that characterize work today. The process and methodologies in pilot projects are used to develop a workplace that more effectively supports the client organization's business goals and needs than current workspaces. The research approach studies these sites pre- and post-occupancy to identify the extent to which desired outcomes have been achieved. The research approach uses the Balanced Scorecard as a framework for developing goals, hypotheses and metrics for each project.
A biomechanical theory of inactivation

An important question in the literature focusing on motor control is to determine which laws drive biological limb movements. This question has prompted numerous investigations analysing arm movements in both humans and monkeys. Many theories assume that among all possible movements the one actually performed satisfies an optimality criterion (Todorov 2004). In the framework of optimal control theory, a first approach is to choose a cost function and test whether the proposed model fits with experimental data. A second approach (generally considered as the more difficult) is to infer the cost function from behavioural data. The cost proposed in this study includes a term called the absolute work of forces, reflecting the mechanical energy expenditure. Contrary to most investigations studying optimality principles of arm movements which used smooth cost functions [i.e. that have continuous derivatives up to some desired order, like the minimum jerk (Flash and Hogan 1985) or minimum torque change (Uno et al. 1989) models], the present model has the particularity of using a cost function that is not smooth. We have demonstrated in Berret et al. (2008) that under these assumptions agonistic and antagonistic muscles are inactivated during overlapping periods of time, for quick enough movements. Moreover, it has been shown that only this type of criterion can predict these inactivation periods. Finally, experimental evidence is in agreement with the predictions of the model. Indeed, we have checked the existence of simultaneous inactivation of opposing muscles during fast vertical arm movements.
Reflections on worker’s compensation in the state of New Jersey

Correspondence: Edward H Tobe 1001 Lincoln Drive West Suite B, Marlton, New Jersey 08053-1534, USA Tel +1 85 6983 4940 Email edward.tobe@comcast.net Abstract: A healthy, productive workforce improves the socioeconomic interests and stability of society. In the early 20th century, federal worker’s compensation law was modified from intentional and unintentional negligence tort law to a no-fault system; this was designed to optimize the outcome of work-related injuries for both employers and employees. It was recognized that the integrity of the worker’s health was essential to society. Each state independently legislated medical and fiscal management of occupational injuries and illness. The state of New Jersey presently has a system to evaluate the complex processes that the worker and worker’s family experience after a work-related injury. The current legislation may encourage antipathy and mental regression during a vulnerable period of the worker’s life. Reflecting on potential legislative shortcomings may stimulate ideas to create improved treatment outcomes.
Adaptive Vibration Control for System with Friction Damping

The dynamic model of the single-degree-of–freedom (SDOF) mass-spring system with friction is established, based on the Lugre friction model. An observer-based model reference adaptive controller (MRAC) is proposed. By Lyapunov method, it is proved that the closed-loop system is asymptotically stable and the displacement as well as the velocity tracking errors can converge to zeros. Simulation work is carried out in both frequency and time domain. The results show that the proposed controller can greatly attenuate the response of the system significantly for both harmonic and random excitations.
Redefining the Operation and Design Considerations of Organic Solar Cells: Role of Morphology and Defect States

Ray, Biswajit Ph.D., Purdue University, December 2013. Redefining the Operation and Design Considerations of Organic Solar Cells: Role of Morphology and Defect States. Major Professor: Muhammad A. Alam. Organic photovoltaic (OPV) technology is currently a topic of great interest for potentially low cost solar energy conversion and possibility for many novel PV applications (e.g., building-integrated PV, portable solar cells, etc.). Successful commercialization of this technology, however, will require significant improvement in efficiency and lifetime. During the last few years, innovation in novel polymer synthesis has raised the efficiency of OPV above 10%, at par with a-Si and earth-abundant solar cells. Further improvement in performance will rely on breakthroughs in device design, which requires profound understanding of the physics of device operation. A major challenge in the design of the state of the art OPV cells is the need for random mixture of two different organic semiconductors for the absorbing layer. Even though such complex morphology reduces charge loss by separating electrons and holes in respective channels, it introduces many technological problems such as reliability, variability and yield which may preclude the large scale adoption of this technology. In this work, we develop a theoretical and conceptual framework to facilitate fundamental understanding of the device physics of organic solar cells. In addition, this work has inspired several new design concepts, which can potentially improve the efficiency and lifetime of OPV cells. One crucial contribution of this thesis work is the proposal of single material based OPV design, which provides a paradigm shift in the design of organic solar cells. In general, the thesis work provides several new insights on the role of active layer morphology and defect states in organic semiconducting devices, which will broaden the field of organic electronics.
GM3 synthase deficiency

GM3 synthase deficiency is characterized by recurrent seizures (epilepsy) and problems with brain development. Within the first few weeks after birth, affected infants become irritable and develop feeding difficulties and vomiting that prevent them from growing and gaining weight at the usual rate. Seizures begin within the first year of life and worsen over time. Multiple types of seizures are possible, including generalized tonic-clonic seizures (also known as grand mal seizures), which cause muscle rigidity, convulsions, and loss of consciousness. Some affected children also experience prolonged episodes of seizure activity called nonconvulsive status epilepticus. The seizures associated with GM3 synthase deficiency tend to be resistant (refractory) to treatment with antiseizure medications.
Outcomes and Utilization of Cervical Cancer Screening Services Amongst Women Attending United Bulawayo Hospitals Cancer Screening Clinic: A Secondary Data Analysis from 2018 to 2020.

Background: Visual Inspection with Acetic Acid and Cervicography (VIAC) is a screening method used to see and treat pre-cancerous cervical lesions. United Bulawayo Hospitals (UBH) is a tertiary government hospital that has an established VIAC Clinic that offers free services to the southern region of Zimbabwe. The utilization and outcomes of VIAC screening method become important in mapping the policies going into the future. We performed a retrospective descriptive study analysing data from 2018 to 2020 to assess outcomes and utilization of Cervical Cancer Screening Services. Method: We conducted a retrospective descriptive cross-sectional study using data collected from the United Bulawayo Hospitals VIAC Clinic. We analysed all records of clients who utilized VIAC services at the referral facility from 2018 to 2020.Results: From the records, a total of 15,491 women accessed services at the VIAC Clinic. The VIAC positivity rate was 6.7%, those with suspicion of cancer result were 1.15 % and punch biopsies constituted 2.3 % of patients seen. Of the treatment modalities offered to VIAC positive patients, Loop Electrosurgical Excision Procedure (LEEP) constituted 53%, cryotherapy 15.3%, hysterectomies 12.7%, punch biopsies 18.2%, and thermal ablation 0.8%. Conclusion: The "See, Screen and Treat" objective in cervical cancer management is being realized at the tertiary hospital. Clients are coming for management from the entire southern region of Zimbabwe. The Ministry of Health should upscale VIAC clinics which are able to offer different treatment modalities in rural areas and also fund community awareness and engagement to increase the number of women coming for cervical cancer screening services.
Bus-Clamping Based Improved Discrete Duty Ratio Control Technology of Direct Torque Control for Induction Motors

One of the disadvantages of traditional direct torque control is high torque ripple, A method of reduce torque ripple was proposed basing bus-clamping and duty ratio control technique in this paper. Firstly, the switch vector table with bus-clamping technology was improved by analyzing the role of zero voltage vector to reduce torque ripple in different sector of voltage. Secondly, on the base of combing the improved bus-clamping direct torque control (BCDTC) and discrete duty ratio control (DDRC), a new switch vector table with discrete duty ratio and bus clamping was designed by analyzing the role of zero voltage vector to reduce torque ripple in different speed range. Finally, simulations are performed to verify the proposed strategies.
Novel modulation schemes minimizing the switching losses of sparse matrix converters

The switching losses of a three-phase sparse matrix converter (SMC) operating in the lower modulation range are minimized by employing the lowest and the second largest input line-to-line voltage for the formation of the converter DC link voltage. The resulting current stresses on the power semiconductors and the switching frequency ripple RMS values of the filter capacitor voltages and output currents are calculated by digital simulation and compared to conventional modulation. Finally, a modulation scheme is introduced which allows the generation of reactive input power also for missing active power transfer via the DC link and/or purely reactive load. This is a basic requirement for operating the SMC in boost mode where the output filter capacitor voltages have to be controlled sinusoidally also for no-load operation.
Improving the phase measurement by the apodization filter in the digital holography

Due to the finite size of the hologram aperture in digital holography, high frequency intensity and phase fluctuations along the edges of the images, which reduce the precision of phase measurement. In this paper, the apodization filters are applied to improve the phase measurement in the digital holography. Firstly, the experimental setup of the lensless Fourier transform digital holography is built, where the sample is a standard phase grating with the grating constant of 300μm and the depth of 150nm. Then, apodization filters are applied to phase measurement of the sample with three kinds of the window functions: Tukey window, Hanning window and Blackman window, respectively. Finally, the results were compared to the detection data given by the commercial white-light interferometer. It is shown that aperture diffraction effects can be reduced by the digital apodization, and the phase measurement with the apodization is more accurate than in the unapodized case. Meanwhile, the Blackman window function produces better effect than the other two window functions in the measurement of the standard phase grating.