Miracle-dz/UniFAR-FTUs huggingface dataset:
General oscillator characterization using linear open-loop S-parameters

From a practical standpoint, oscillator design using linear open-loop S-parameters is attractive to designers due to the ease of use and widespread availability of linear S-parameter-based analysis software. However, the easiest and, therefore, most common approach is based on intuition and rules of thumb. The intent of this paper is to obtain quantitative expressions that characterize oscillator performance in terms of the linear open-loop S-parameters. A characteristic equation is derived that determines oscillator stability. The Nyquist stability criteria can be applied to this equation directly from the open-loop Bode plot. A closed-loop gain parameter is derived, which describes how the open-loop circuit self-connects. From this parameter, the startup time, oscillation frequency, and loaded Q can be predicted. A prediction of actual oscillation frequency can be made based on a simple oscillator model with known saturation characteristics. It will be shown under what conditions these expressions simplify to more readily applicable forms. In many cases, the designer can adjust analysis parameters to allow the use of the simplified expressions.
Quelles trajectoires de réhabilitation pour la décharge de l’Île d’Ouessant (29) ? Retour sur dix années de recherche-action

En 2009 était lancée l’étude préalable à la fermeture de la décharge de Penn ar Roc’h située en contexte de pelouse et de lande de hauts de falaises littorales. Des échanges entre le bureau d’étude en charge de l’étude environnementale et des universitaires de l’Université de Bretagne occidentale menant des travaux de recherche sur la restauration écologique permettent de lancer une réflexion pour une expérimentation d’ingénierie écologique (transferts de litière de lande et de fauche de pelouse). Lors des journées REVER 2 à Brest en 2010, une visite du site de la décharge est réalisée juste avant les travaux, permettant de bénéficier de l’expertise des chercheurs et praticiens présents. Un partenariat se noue avec le Muséum national d’Histoire naturelle et l’Université de Brest pour mettre en place un suivi écologique de cette opération. Celui-ci est par la suite repris par le Parc naturel régional d’Armorique, gestionnaire du site Natura 2000 – sur lequel se situe l’ancienne décharge – et le Centre d’étude du milieu d’Ouessant. La dynamique de la végétation montre de fortes variations dans l’espace et dans le temps. Si les résultats des premières années étaient encourageants, avec l’apparition d’espèces cibles de lande (ajonc et bruyère), un coup d’arrêt de la dynamique a été observé ces dernières années en lien probable avec des perturbations (tempêtes, pâturage par un troupeau de chèvres). La question d’une nouvelle intervention d’ingénierie écologique est donc posée sur ce site, même si la lenteur du processus écologique est plutôt un bon signe sur ce type de milieu naturellement contraint. Ces résultats, mis en perspective avec ceux d’autres opérations de restauration menées en Bretagne, confirment l’existence possible de dynamiques particulières de la végétation sur des sites de hauts de falaises perturbés par d’anciennes infrastructures : les trajectoires de successions sont alors plus aléatoires que sur des sites uniquement dégradés par la fréquentation.
Reactive Power Control Method for Reducing Voltage Fluctuation in Large-scale Photovoltaic Systems

For large-scale photovoltaic (PV) systems, we have developed a large capacity power conditioning system (PCS) with three functions: fault ride through function, harmonic reduction function and voltage control function. This paper deals with our new reactive power control method of the PCS for reducing voltage fluctuation in large-scale photovoltaic systems. The proposed method reduces the voltage fluctuation caused by the active power of PV by adjusting the power factor of the PCS automatically to the optimal value according to the conditions of power systems. In this paper, the control operation and the control effect of our proposed method were examined by numerical analysis and an experiment using small PCS models. We verified that the voltage fluctuation caused by output of PV at interconnecting point could be reducing by controlling reactive power at the optimal value according to the power system conditions. Then, we confirmed that there is no need to increase the PCS capacity by the adjusting the offset of the reactive power properly. Finally, we confirmed the voltage fluctuation could be reduced without biasing the reactive power to a specific PCS even if there is difference between outputs of plural PCSs operating in parallel.
Towards a Single Integrative Metric on the Dynamics of Social-Environmental Systems

Integrating the dynamics and interconnections of natural and human system properties into a single measure would make it simpler to reliably and repeatedly assess and compare different social-environmental systems (SES). We propose a novel metric to assess the magnitudes and variations in SES dynamics by integrating longitudinal gross domestic product, population, and ecosystem net primary production. We use annual public data across the Asian Drylands Belt (ADB) from 1992 through 2016 for 18 political entities as our testbed for assessing the efficacy of the metric. We perform cross-comparisons with existing natural and social science metrics to demonstrate the validity of the proposed metric, including the Human Development Index and the Palmer Drought Severity Index. The new metric demonstrates notable and meaningful differences in trends among the political entities that reflect major social, economic and environmental events over the 25-year period. It provides unique perspectives about the three pillar components (social, economic and environmental systems) in each of the 18 political entities (PE) of the ADB. The metric also shows meaningful associations with key economic and environmental indicators and great potential for broader application and evaluation, given additional testing in other countries, regions, and biomes.
A Thin and Deep Hole Drilling Using a Fuzzy Discrete Sliding Mode Control with a Woodpeckering Strategy

In this paper, a thin and deep hole drilling (TDHD), which is one of the difficult operations in metalworking, is accomplished by a fuzzy discrete sliding mode control (FDSMC) which is a combination of the fuzzy control and the discrete sliding mode control. The kernel problems of TDHD are chip removal, heat buildup, drill life, drill vibration, hole finish, drill breakage, difficulties in modelling the dynamic system, and so forth. The advantageous features of the FDSMC are that it does not require a mathematical model and that it has the invariant properties to resolve uncertainties when the system state is on the sliding surface. Moreover, a woodpeckering strategy can help prevent chip congestion and drill breakage. Finally, the experimental results for a thin and deep hole drilling by the proposed fuzzy discrete sliding mode control using a woodpeckering strategy are presented to verify the usefulness of the system.
Evaluation of Internal Control Efficiency in Finance Department of RMUTI Sakon Nakhon Campus

The objective of this research is to evaluate internal control and efficiency in the finance department of RMUTI Sakon Nakhon Campus. A qualitative method was used, together with a review of prior literature and government reports. This qualitative data is the result of in-depth interviews with the seven finance staff in RMUTI Sakhon Nakhon Campus. Period of this study between November 2012 – February 2013. The result of this study indicated that the internal control in receiving government revenue shows clear a policy in relation to regulations and rules from the top management of RMUTI Sakon Nakhon Campus. The study shows that the internal staffs who control withdrawing government expenditure have acted responsibly. Also the internal control returning budget to central finance government shows strict rule practicing has been administered. However, the internal control of cash sometime shows daily counting and recording of cash in hand. The findings suggest that top management of RMUTI Sakon Nakhon campus should support strict rules when counting and recording cash in hand. Daily counting and recording of cash in hand are strongly recommended for safe and efficient practices for cash in hand management.
Use of Biological Phenomena in Design by Analogy

Biomimetic design involves the use of biological phenomena as analogies to solve engineering problems. The use of biological knowledge in natural-language format to support biomimetic design removes the need to create and maintain a database of biological phenomena for engineering purposes. However, challenges arise in recognition and extraction of relevant strategies in biological phenomena and the application of these strategies to the target problem. This paper describes two studies of how descriptions of biological phenomena are used to develop solutions to an example problem. Participants were informed of the types of similarities to avoid that were observed in a previous study. The occurrence of such non-analogous similarities declined. Two types of fixation were observed during the first study: fixation on certain words instead of the overall strategy presented in descriptions and fixation on certain solutions regardless of the description used as stimuli. The second study aimed to reduce these types of fixation. While fixation was observed to decrease in the second study, the need for support of analogical mapping persisted.Copyright © 2004 by ASME
Robust integral of sign of error‐based distributed flocking control of double‐integrator multi‐agent systems with a varying virtual leader

This article investigates the flocking control problem of double‐integrator multi‐agent systems with a virtual leader subject to unknown external disturbances. A robust integral of sign of error (RISE) based control method is leveraged to design a distributed flocking controller with advantages of zero initial input value and continuous control input. By means of a new second‐order differential virtual potential field function, and the navigational feedback from a virtual leader, the proposed flocking controller assures agents of velocity consensus with the virtual leader and a quasi α ‐lattice formation within a circular neighborhood centered on the virtual leader. Moreover, this algorithm guarantees collision avoidance and connectivity preservation of a proximity‐induced communication topology. Numerical simulations of the algorithm are provided to illustrate the effectiveness of the proposed flocking algorithm.
Reconstruct the PWM Signal of Switching Power Supplies from the Near Field Radiation

A non-contact testing method is proposed for encapsulation treated or insulation coated switching power supplies, which is implemented by reconstructing the pulse width modulation (PWM) signal of switching converters from the near field radiation of magnetic components. The radiation pattern of a buck converter is investigated, and the magnetic field sensing probe and PWM signal reconstruction circuit are also illustrated. The reconstruction testing is carried out on a buck converter; the duty cycle error of the reconstructed PWM signal is less than 0.2%, which validates the proposed method.
Competitiveness of Inexperienced and Experienced Contractors in Bidding

This paper tests the assertion that experienced contractors are more competitive than inexperienced contractors by measuring the effect of experience on bidding competitiveness for building contracts procured by a regular client. Contractors are grouped into experienced and inexperienced contractors, and two levels of contractors’ experience are identified: (1) bidding experience only and (2) bidding plus construction experience. Results of two-sample t tests show that experienced contractors are more competitive than inexperienced contractors. Contractors’ competitiveness in respect of school contracts and other contracts are further compared in evaluating the relationship between the project type and experience effect. Experienced contractors are, on average, more competitive in competing for school contracts. It emerges that the factor of project type familiarity amplifies the experience effect. A comparison of experienced contractors’ competitiveness in bidding for (1) new building works and (2) alter.
Analisis Faktor Penerapan Budaya Sasaran Keselamatan Pasien di Rumah Sakit : A Literature Review

Sasaran keselamatan pasien (SKP) menjadi isu global dalam pelayanan kesehatan di rumah sakit dan memerlukan perhatian khusus dalam pelaksanaannya. Tujuan dari kajian ini adalah untuk mengidentifikasi faktor-faktor yang berpengaruh terhadap penerapan SKP. Kata kunci yang digunakan, yaitu: patient safety, health, health worker, Pencarian artikel jurnal dilakukan secara elektronik dengan menggunakan beberapa database, yaitu: Proquest, Google Scholar, Science Direct. Batasan waktu yang digunakan adalah Januari 2009 hingga Desember 2019. Dari 1812 artikel yang diperoleh 16 artikel yang memenuhi kriteria inklusi. Dari 16 literatur tersebut telah diperoleh faktor-faktor yang mempengaruhi penerapan SKP antara lain, aspek ekonomi, kepemimpinan, budaya, sistem pelayanan kesehatan, pengetahuan, sikap, dan tindakan tenaga professional, analisis situasi dan kondisi tempat kerja, sistem manajemen risiko, durasi jam kerja perawat, program mentoring, supervisi keperawatan, dan evaluasi penerapan SKP. Faktor-faktor tersebut dapat memberikan dukungan positif di rumah sakit untuk menerapkan sistem manajemen dan pelayanan kesehatan yang prima dengan memaksimalkan penerapan SKP sehingga dapat menekan risiko terjadinya malpraktik atau kejadian tidak diinginkan. Dalam proses penerapan SKP ini diharapkan ada kerjasama dan kolaborasi yang baik dari seluruh elemen rumah sakit agar bisa berjalan secara optimal dan memberikan dampak positif terhadap peningkatan kualitas pelayanan kesehatan.
The Variation of Hydrocarbon Emissions from Different Piston Designs in a Spark Ignition Engine

The total hydrocarbon (HC) emissions and the distribution of hydrocarbon species from several different piston and cylinder liner configurations were compared against those from the standard piston for this engine. Reductions in total HC emissions were observed for each design variant, top land crevice volumes and cylinder liner surface finish achieved the most significant reductions. The variations between the relative quantities of a selection of the most significant HC species were investigated for each design and showed considerable differences between each test.
THE APPLICATIONS OF TIME INTERVAL ALIGNMENT POLICIES IN SUPPLY CHAIN SYSTEM

This paper discusses the applications of interval alignment (IA) scheduling policies in supply chain management. IA policies effectively smoothen part flows, improve performance and decrease aver- age Work-in-Process (WIP) and lead times by adding intermediate delays to the system. We also discussed the applications of IA policy as kanban control in supply chain systems which result in the achievement of Just-in-Time (JIT). The results of the this paper may be used to facilitate factory layout and shop-floor design, using the non-traditional idea that adding machines (test, re- work, etc.) in appropriate places will reduce end-to-end lead times. Keywords- Scheduling policies, supply chain management, interval alignment policies, integer linear programming, Optimization and lean system.
LANDMARK-BASED VISUAL PLACE RECOGNITION

— Landmark recognition is one type of problem of object recognition that has not been well solved. The classical techniques used for object recognition can not be applied directly due to a large number of landmarks and a highly imbalanced dataset. This paper presents the application of a triplet network for large scale landmarkbased visual place recognition. By fine-tuning pre-trained convolutional neural network (CNN) and minimizing triplet loss, the triplet network can learn appropriate metrics so that most similar images can be retrieved through algorithms for the k-nearest neighbor (KNN). The performance of the proposed method is evaluated on a data set for the recognition of real-world landmarks.
Development of a multi-behavior based mobile robot for remote supervisory control through the Internet

We review the networked mobile robot systems and suggest taxonomy based on the three levels of control commands. The performance analysis result shows that direct control has potential difficulty for implementation due to the unpredicted transmission delay of the network. To tackle this problem, we have suggested the behavior-programming control concept to avoid disturbances of the Internet latency. For this purpose, primitive local intelligence of the mobile robot is grouped into motion planner, motion executor, and motion assistant, where each of a group is treated as an agent. They are integrated by centralized control architecture based on multi-agent concept, communicated through a center information memory. The event-driven concept is applied on the robot to switch the behaviors to accommodate the unpredicted mission autonomously. We have successfully demonstrated experimentally the feasibility and reliability for system through a performance comparison with direct remote control.
Maximizing the Use of Multimedia for Effective Teaching and Learning in Nigerian Tertiary Institutions

This paper examines the numerous benefits Information and Communication Technologies (ICTs) such as multimedia that improve the quality and quantity of teaching and learning in tertiary institutions. Furthermore, the paper reveals the challenges encountered and how multimedia facilitates teaching and learning in various ways that include: active, collaborative, creative and evaluative learning. However, the challenges were also outlined such as Lack of maintenance of ICTs facilities, Non-inclusion of ICT programmes in teachers’ training curricula, non- chalant attitudes 0f management staff, Cost of equipment, Lack of qualified ICT personnel, Non reliability of electricity supply, Lack of enabling environment, Inadequate and irregular funding of ICT initiatives and so on. The paper concludes the application of multimedia in our tertiary institution is paramount so as to achieve academic excellent. It was finally recommended that our institution of learning should include the innovation brought by the imaging new ICTs technologies to enable us realize the national goals.
Real-time implementation of grey fuzzy terminal sliding mode control for PWM DC-AC converters

Classical terminal sliding mode control (TSMC) has finite system state convergence time and is insensitive to disturbances and uncertainties within expected limits. However, TSMC may chatter when uncertainty values are overestimated or may exhibit a steady-state error when uncertainty values are underestimated. An improved TSMC is proposed by the use of a mathematically simple and computationally fast grey prediction (GP) methodology, which is then fine-tuned by the use of fuzzy control methodology for PWM DC–AC converters. First, GP methodology is employed to deal with classical TSMC chattering and steady-state error problems. Fuzzy control is then used to tune the GP forecasting value for improved rise time and overshoot characteristics. The system is evaluated by simulation and also by real experiment. Both evaluation methods confirm that the proposed controller achieves low total harmonic distortion under non-linear loading conditions and fast dynamic response under transient loading conditions. Because the proposed grey-fuzzy TSMC methodology is simpler to implement than prior methods and offers more efficient computation, it will be of interest to designers of related control systems.
Design formulas for tuned mass dampers based on a perturbation technique

Modal properties of tuned mass damper (TMD)-structure two-degree-of-freedom (2DOF) linear systems are studied employing a perturbation technique. Using the perturbation solutions, formulas relevant to designing the TMD for various types of loading are obtained; they are expressed as a function of mass ratio, tuning ratio, damping ratio of the TMD and damping ratio of the structure. Equivalent additional dampings of the structure due to the TMD are derived for random and harmonic forces. Matched expressions of equivalent damping, which are valid for detuned, i.e. non-optimal, conditions are also presented. The stability boundary of TMD-structure systems subject to linear self-excited forces is derived in a closed form. Using the perturbation solutions, procedures for optimizing the TMD parameters for various types of loading are explained and the optimal values are derived. The formulas obtained in this study can be used with good accuracy for mass ratios less than 0.02.
ROLE OF ILAJ-BIL-GHIZA (DIETOTHERAPY) AS A PREVENTIVE THERAPY IN PREGNANCY INDUCED HYPERTENSION (PIH): A REVIEW

The hypertension that is caused directly by gravid state is known as Pregnancy Induced Hypertension (PIH). It has an association with increased maternal morbidity and mortality. In classical Unani literature, hypertension is referred as Hejan of blood. Ibn-e-Sina (Avicenna) wrote in his book Al-Qanoon Fit Tib (Alcanon) that few times pregnant women may complain Warm-e-Qadam (Pedal Oedema). During labour, Tashannuj wa Tamaddud (Convulsions) may occur. Ilaj-bil-Ghiza (Dietotherapy) is a method of Unani treatment in which a specific diet is given for a specific disease. Dietary supplement of 400 IU Vitamin E and 1000 mg Vitamin C per day as antioxidant resulted in reducing oxidative stress, decreased endothelial activation and reduction in the risk of PIH by 61%. Specific diets mentioned in Unani medicine which contains Vitamin E and Vitamin C can be beneficial in PIH.
Composition de l'eau et du sol : effet des activités microbiennes et des déplacements de micro-organismes

Le sol participe à la qualité de la nappe par ses fonctions de rétention, de libération et de transformation de composés variés, voire par le transfert de micro-organismes. Il se distingue d'autres bioréacteurs par l'existence d'hétérogénéités à différentes échelles d'espace et de temps, par la présence de phases solides ou leur nature, et par une forte biodiversité microbienne. Encore peu étudiés, les déplacements de micro-organismes (parfois agents pathogènes), sont associés à des transferts d'activités et de polluants où utilisés à des fins de dépollutions (en nitrate, hydrocarbures…). La modélisation mécaniste peut aider à comprendre et prévoir la qualité des eaux de nappe ; elle suppose la prise en compte de mécanismes physiques (transferts), biologiques (dynamiques et activités des micro-organismes), et géochimiques (réactivités en solution et aux interfaces entre solution et phases solides).
SVC, STATCOM, AND TRANSMISSION LINE RATING ENHANCMENTS ON INDUCTION GENERATOR DRIVEN BY WIND TURBINE

Multi-megawatt wind-turbine systems, often organized in a wind park, are the backbone of the power generation based on renewable-energy systems. This paper presents the effect of some system parameters like rating of capacitor bank, static var compensator SVC rating, static synchronous compensator STATCOM rating and transmission line length, on performance of induction generator driven by wind turbine. Also, the most-adopted windturbine systems, the adopted generators the topologies of the converters, the generator control and grid connection issues, as well as their arrangement in wind parks. This study is based on the SimPowerSystems for use with Matlab/Simulink.