Miracle-dz/UniFAR-FTUs huggingface dataset:
Pinning-Based Hierarchical and Distributed Cooperative Control for AC Microgrid Clusters

With the large-scale application of microgrids (MGs), interconnecting nearby MGs to form an MG cluster (MGC) enables a higher utilization of renewable sources. This article presents a pinning-based hierarchical and distributed cooperative control strategy for AC MGC, which includes distributed generation (DG)-layer, MG-layer, and MGC-layer controls. The DG-layer control regulates the local voltage/current of each DG unit. The MG-layer control is performed for each individual MG, managing DG units in a cooperative manner through several sparse communication networks. By representing each MG as an MG agent, the MGC-layer control coordinates MGs based on a higher level peer-to-peer communication network among MG agents. The interaction between MG-layer and MGC-layer is established by pinning some DG units of each MG to communicate with the MG agent. Compared with the existing literature, the contributions of this article are: 1) simultaneously realizing multiple control objectives in the MGC system level including frequency/voltage regulation and active/reactive power sharing; 2) presenting a systematic approach to construct a unified small-signal dynamic model of the MGC system; and 3) performing a detailed small-signal stability analysis to evaluate the system dynamic performance. Time-domain simulation and experiments are carried out to validate the effectiveness of the proposed methods.
Determinants of the Continued Intention of College Students in China to Use DiDi Mobile Car-Sharing Services

This research paper examined the continued intention of college students to use DiDi mobile car-sharing services in China. The unified theory of acceptance and use of technology (UTAUT) was used as the theoretical framework while the data analysis was completed with SPSS. The results have demonstrated that performance expectancy, reliability, efficiency, and security and privacy were significant predictors of the continued intention to use mobile car-sharing services. Contrary to our expectations, effort expectancy was not a significant determinant of the continued intention to use mobile car-sharing services. In addition to these direct effects, the moderating impact of trust in the internet was also examined. The moderating analysis showed that trust in the internet showed no significant moderating impact on the relationship between performance expectancy, effort expectancy, reliability, efficiency, and security and privacy and the continued intention to use mobile car-sharing services. The implications of these findings are discussed.
Magnification-enhanced contemporary dentistry: Getting started

Contemporary dental practice is undergoing a sea change; wherein the approach is an interdisciplinary one aimed to impart minimally invasive, painless, and atraumatic treatments to patients. To enhance their vision for both clinical and laboratory procedures, an increasing number of practitioners are opting for magnification systems such as loupes and microscopes in their practice. Due to their benefits such as improved visual acuity due to coaxial lighting, unobstructed vision, illumination, smaller instruments, minimal trauma, and ergonomic benefits, microscope-assisted precision dentistry is becoming the order of the day. Many dental schools are also making the use of these systems mandatory in their teaching curriculi. Even though the use of microscope initially started in ophthalmology, it′s benefits in endodontic therapy which can best be performed under magnifications up to ×10-20 remains unparalleled. These benefits also extend to all aspects of dentistry including periodontics, restorative, prosthetic dentistry, and implant dentistry. Barring the disadvantages of steep learning curve, cost, and maneuverability of the equipment, magnifications are definitely becoming an important aspect of modern-day dentistry, owing to their numerous other benefits. Clinical Relevance To Interdisciplinary Dentistry Microscope-enhanced dentistry is actually a part of a broader movement of minimally invasive and holistic approach in dentistry, aimed at development of newer techniques, and achieving esthetically superior outcomes , due to improved visual acuity. Magnified vision leads to improvised treatment, thus diagnosis, and management of multiple interdisciplinary problem areas can be achieved with utmost precision by incorporating magnification systems in day to day practice.
Engram reactivation during memory retrieval predicts long-term memory performance in aged mice

Age-related cognitive decline preferentially targets long-lasting episodic memories that require intact hippocampal function. Memory traces (or engrams) are believed to be encoded within the neurons activated during learning (neuronal ensembles), and recalled by reactivation of the same population. However, whether engram reactivation dictates memory performance late in life is not known. Here, we labelled neuronal ensembles formed during object location recognition learning in the dentate gyrus, and analyzed the reactivation of this population by long-term memory recall in young adult, cognitively impaired-and unimpaired-aged mice. We found that reactivation of memory-encoding neuronal ensembles at long-term memory recall was disrupted in impaired but not unimpaired-aged mice. Furthermore, we showed that the memory performance in the aged population correlated with the degree of engram reactivation at long-term memory recall. Overall, our data implicates recall-induced engram reactivation as a prediction factor of memory performance in aging. Moreover, our findings suggest impairments in neuronal ensemble stabilization and/or reactivation as an underlying mechanism in age-dependent cognitive decline.
Comparative Assessment of Problem Based and Web- based Learning in Neurophysiology

Background and Aim: Neurophysiology concepts are difficult to understand in the first hearing and to apply in clinical situations too. To fill this gap, the teaching- learning methods have to be modified. This study introduces two learning methods in this scenario and comparatively assesses them. The objective of the study was to compare the problem- based and web - based learning methods in Neurophysiology. And To find the effects of problem- based and web - based learning methods. Methods: The quasi-experimental study was carried out on I MBBS students of MOSC Medical College, Kolenchery, who were divided randomly into two groups: Problem-based Learning group (PBL) and Web-based Learning (WBL) group. Pre and Post- test were administered to the two groups and individual feedback was collected online. Results: The pre and post test marks in the 2 groups did not show any significant difference by Wilcoxon Signed Rank Test (p=0.636 for the PBL group and p=0.051 for the WBL group). Inter-group Post-test score comparison by Mann-Whitney U test gave a non-significant result (p-value=0.056). Conclusion: This indicates that there is no significant intra- or inter- group improvement in the scores obtained. Feedback responses collected from both groups showed proportionately higher number of students wanting more topics to be taken in a similar manner.
Fighting for survival: responding to state capacity and terror group end

ABSTRACT The well-established argument in the literature suggests that the higher state capacity is associatedwith the lower chance of experiencing civil conflict or higherchance of defeating the violent non-state groups. However, theliterature does not sufficiently address how these groups respondto increasing state capacity, and how their responses to that shapethe dynamic of political violence. I investigate the impact of statecapacity on terrorist group termination by exploring the waysterrorist groups respond to increasing state capacity. I argue thatincreasing state capacity might lead to a set of responses fromthe terror group in a way that it might induce the group to producemore terrorist violence to show that the group can still persist. Itmay also encourage the group to provide positive and negativeincentives to its constituents in order to rehabilitate its physicalcapacity to operate, and to prevent a shift of popular support a wayfrom the group towards to the government. Thus, such responsesof the group will decrease the likelihood of its terror campaign. Ialso expect that these arguments are especially relevant for ethnicor religious terror groups. The results of the empirical analysessupport these theoretical expectations.
Ingestion of microplastics by anchovies from Talisayan harbor, East Kalimantan, Indonesia

Microplastics (MPs) is the most contamination problem on the marine environment now, therefore a small pelagic fish like anchovies, can feed accidentally the microplastic. This research focused on the amount of abundance of microplastics in the anchovies. We measured the length and dry weight of the anchovies and isolated their digestive tracts. The digestive tracts were then digested with NaOH and sodium lauryl sulphate (SLS) technical grade. The microplastics had observed with the using microscope and confirmed with Fourier-transform infrared spectroscopy (FTIR). Here, the investigation result from anchovies digestive tract (Stolephorus spp.) sampled (n = 15). The total microplastics contamination from Talisayan harbor, East Kalimantan is 366 ± 3. 51 particles/individual. Kind of microplastics size range detected as categories: < 20 µm, 20 -50 µm, 50 -500 µm, 500 -1000 µm, and >1000 µm. Most of microplastics shapes from Talisayan harbor are microfilm (50%) and microfiber (29.59%). The type of polymers are confirmed by Fourier transform infrared (FTIR) spectroscopy as polypropylene, high-density polyethylene and foamed polystyrene nylon. Our findings reported that specific size range (50-500 µm) is the most majority of microplastics size range which are ingested by anchovies from Talisayan harbor. The microplastics are more dangerous if another contamination found together on it. On this investigation, the mercury contamination also tested and the result showed as not detected mercury contaminant. The anchovies are had the economic value and also small pelagic fish which are play as prey for the other big fish. The exposure are possible to the human by contaminated seafood diet.
Adults in Poor Physical Health Reporting Behavioral Health Conditions Have Higher Health Costs

Adults aged 18 to 64 who have been identified as being in poor physical health typically exhibit chronic health conditions such as diabetes, cardiovascular disease, heart disease, being overweight, or combinations of these conditions; chronic conditions such as these are linked with higher health care expenditures.1-5 Additional studies have linked behavioral health conditions with poorer physical health outcomes for those with chronic health conditions6,7 and suggest that a lack of health care insurance can also be linked to poorer outcomes for both behavioral and physical health.8 Individuals with behavioral health conditions also have higher out-of-pocket costs than those without such conditions.4,9
Effect of the presence of a shoulder on the thermal and dynamic structure of a laminar flow in an air-plane solar collector

Abstract A numerical study of the forced convection of a two-dimensional laminar air flow through a rectangular pipe with a shoulder is presented. The profiles and contours of velocity and temperature were analyzed in detail. The effects of the location of this shoulder on the insulation and on the absorber, and its height on the variations of the temperature and the velocity at the exit of the collector were also studied and compared with the case without shoulder, for a flow rate varying between 20 and 80 m3/h. The results show that the use of a shoulder placed on the insulator or on the absorber contributes to increasing the dynamic and thermal performance of the flow compared to the simple case; an average temperature gain of 25.52 °C at 56.6 °C is obtained for the low and high flow rates, respectively. The study also revealed that the use of the largest height h3 rated absorber can significantly increase the velocity (of the order of 222%) compared to the simple case. In addition, this location allows to direct the flow at the entrance of the drying chamber downwards, which leads to better evacuation of moist air at the chimney outlet.
Governing Board Attributes as Profitability Influencers under Endogeneity: An Econometric Analysis in South Africa

Presently, the oversight role performed by the governing board has been interrogated due to the demise of several corporate giants. The governing board is responsible for advancing the strategic direction of the company by ensuring superior performance whilst managing risks. Accordingly, this study investigated whether the governing board has any influence on a firm’s profitability by using OLS and GMM estimation on an unbalanced panel of 130 firms over a six-year period. ROA served as a proxy for firm performance and several board-level governance variables were selected namely board size, board independence, CEO duality, director qualifications, and board interlocks. From an econometric contribution, this study found that the addition of instrument variables in the GMM estimation model has proven to be robust in examining corporate governance variables. GMM is also robust in controlling endogeneity and a possible bi-directional causality between board and profitability. From a theoretical contribution, agency, resource dependence and management hegemony theories are highly prevalent in the governing boards of the JSE. The results of this study are as envisaged in the SCP paradigm. All hypotheses were supported, showing overall that profitability is significantly influenced by the board attributes. This study provides a useful analysis of the theoretical framework used by academic writers as a foundation for model specification as well as contributes to the econometric methodology of corporate governance. These findings will also advise future researchers, stakeholders and regulators in better understanding the role of board composition from a profit maximisation and sustainability outlook.
Distributed Optimal Frequency Regulation for Multiple Distributed Power Generations with an Event-Triggered Communication Mechanism

This paper studied the distributed optimal frequency regulation for multiple power generations in an isolated microgrid under limited communication resource. The event-triggered mechanism is introduced in the construction of the regulation algorithm. Each power generation in the microgrid only transmits its own information to its neighbors through a communication network when the event-triggered condition is satisfied, and the communication burden can be reduced significantly. Moreover, Zeno behavior is excluded to make the event-triggered regulation algorithm reasonable and realistic for practical microgrids. The proposed regulation method can restore the frequency and retain the economic efficiency simultaneously when some disturbances occur in isolated microgrids. The experimental result shows the effectiveness of the theoretical method.
Low Temperature Methanol Sensors Based on Cobalt Ferrite Nanoparticles, Nanorods, and Porous Nanoparticles

In this research, response of various nanostructures of cobalt ferrite including nanoparticles, nanorods and porous nanoparticles to methanol is investigated and compared. The nanostructures were prepared using a hydrothermal method and their crystallographic, morphologic and magnetic characteristics were studied by x-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) analysis. Sensing performance of low-cost (PCB-based) sensors to methanol vapor was evaluated at different temperatures. The results showed that the sensors have the best response at low temperatures, as the optimum working temperature of cobalt ferrite nanoparticles and nanorods sensors was 90°C while the optimum performance of porous nanoparticles sensor was at room temperature (RT). The responses of sensors based on cobalt ferrite nanoparticles, porous nanoparticles and nanorods at their optimum working temperatures to 100 ppm methanol were 42.4% (90 °C), 20.26% (RT), and 13.3% (90 °C), respectively. Compared to the previous works, our proposed sensors have high responses to methanol at low temperatures. Furthermore, our sensors are repeatable, have a good stability, and can easily be recovered in air at their working temperatures.
Validity of 2-Day Cardiopulmonary Exercise Testing in Male Patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

Introduction: Among the main characteristics of patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) are effort intolerance along with a prolonged recovery from exercise and post-exertional exacerbation of ME/CFS symptoms. The gold standard for measuring the severity of physical activity intolerance is cardiopulmonary exercise testing (CPET). Multiple studies have shown that peak oxygen consumption is reduced in the majority of ME/CFS patients. A consecutive day CPET protocol has shown a difference on day 2 in ME/CFS patients in contrast to sedentary controls. Because of the low number of male ME/CFS patients in the published literature, and because of a possible gender difference in the clinical phenotype, the aim of this study was to examine whether the response to a 2-day CPET protocol in a larger sample of male ME/CFS patients was similar to that observed in females. Methods: From 77 male patients, 25 male ME/CFS patients fulfilled the criteria of a 2-day CPET protocol for analysis. Measures of oxygen consumption (VO2), heart rate (HR), systolic and diastolic blood pressure, workload (Work), and respiratory exchange ratio (RER) were made at maximal (peak) and ventilatory threshold (VT) intensities. Data were analysed using a paired t-test. Results: Baseline characteristics of the group were as follows. Mean age was 44 (12) years, mean BMI was 27.1 (4.4) kg/m2. Median disease duration was 10 years (IQR 7 - 13). Heart rate, systolic and diastolic blood pressure at rest and the RER did not differ significantly between CPET 1 and CPET 2. All other CPET parameters at the ventilatory threshold and maximum exercise differed significantly (p-value between 2 and workload at peak exercise and ventilatory threshold. Conclusion: This study confirms that male ME/CFS patients have a reduction in exercise capacity in response to a consecutive day CPET. These results are similar to published results in female ME/CFS populations.
Crown lengthening surgery and transurgical restoration

The crown lengthening surgery and the transurgical restoration are alternative procedures to enable the restoration of teeth inaccessible to the conventional techniques and restore the lost biological space. Objective: This study aimed to present clinically the reconstruction of a right maxillary second molar through crown lengthening surgery associated with transurgical restoration with composite resin in a patient treated in the Integrated Clinics of the University of Ribeirao Preto. Case report: Patient E.H. C.V. , female, aged 51 years, attended the dental clinic of the University of Ribeirao Preto. The anamnesis showed a favorable health history and the clinical examination showed great tooth crown destruction of tooth #17. The treatment planning included the crown lengthening periodontal surgery with regularization of alveolar bone on the buccal surface of tooth #17, rubber dam isolation, the restauration of the compromised area with composite resin, and suture in the same session. After 7 days, the sutures were removed and the restoration polished. Conclusion: It can be concluded that the use of this technique is a viable, fast, and satisfactory solution, with good results, favoring the health and aesthetics, returning function and better social life to the patient.
Influence of age and gender on taste function of healthy subjects

Objectives To determine the influences of age and gender on the taste functions of healthy Taiwanese. Methods We evaluated taste functions of healthy Taiwanese using the whole mouth suprathreshold taste test, along with the taste quad test. In the whole-mouth test, we applied in a counterbalanced order sweet, sour, salty, and bitter solutions, each at 5 different suprathreshold concentrations to subjects, who were instructed to sip and swish in mouth twice. Each subject had to indicate the taste quality, and to rate the intensity and unpleasantness/pleasantness of each taste of the solutions. In the quad test, the 4 quadrants of the tongue surface were tested by dripping one concentration of sweet, sour, salty, or bitter solutions for 6 times. Subjects then indicated the taste quality, and rated the intensity of the solution. Results Subjects were divided into groups based on their gender and age: 20-39 years, 40-59 years, or ≥ 60 years. We found that in the whole mouth taste test, the total correct identification score dropped with age. But identifying sweet and salty qualities was not affected by age. No differences were found between male and female, except women scored better than men for sweet quality in the age group of 40-59 years. The total correct identification score of the taste quad test also decreased with an increased age of the taste quad test, without gender differences. Conclusion Both age and gender affected the taste functions in healthy Taiwanese to some extent, and differences were dependent on age, tongue region, and taste quality.
Supported Ni–Au Colloid Precursors for Active, Selective, and Stable Alkyne Partial Hydrogenation Catalysts

Bimetallic NiAu catalysts have garnered broad interest for a variety of reactions including automotive emissions, selective hydrogenation, selective oxidation, hydrodechlorination, and biomass conversion. However, the bulk immiscibility of the two metals, complicating catalyst synthesis, has limited studies of this bimetallic system. We report a solution-phase synthesis for Ni and bimetallic NiAu heterogeneous catalysts. Using oleylamine as a capping agent, an optimized synthesis for Ni catalysts led to supported particles with a narrow size distribution (4.7 ± 0.4 nm). Gold was added to the Ni nanoparticles via galvanic displacement of Ni in organic solution, the particles were deposited onto commercial alumina, and oleylamine capping agent was removed. The catalytic activity of the bimetallic materials in 1-octyne partial hydrogenation was in between the activity of monometallic Ni and Au catalysts. At high space velocity, the bimetallic catalysts largely maintained the high alkene selectivity associate.
The gastromyzophorous tadpoles of Atelopus elegans and A. palmatus (Anura: Bufonidae), with comments on oral and suction structures

ABSTRACT The tadpoles of the Neotropical genus Atelopus are only known for 26 out of 96 species described. Here, we describe the tadpoles of A. elegans and A. palmatus including ontogenetic information, measurements, and images of individuals in several stages of growth. Both species are compared with their congeners taking into account some relevant features such as the coloration and relative measurements. Our description focuses on the abdominal sucker and mouth by providing scanning electron microscopy images and comparing the suctorial mechanism with other groups of anurans and fish. We also provide an update to knowledge of the abdominal suckers, and information about their lateral line system and the distribution of their lateral line openings. The results show that brown marks over a tan surface and an irregular distribution of marks along the body and tail are unique to A. elegans; while a patterned distribution of contrasting marks, and the presence of submarginal papillae are unique to A. palmatus. Also, both species show differences in the structures of their teeth. Finally, we conclude that some characters such as coloration, presence or absence of some structures, and relative measurements are useful for identifying the species.