Miracle-dz/UniFAR-FTUs huggingface dataset:
Describing Function Method Based Power Oscillation Analysis of LCL-Filtered Single-Stage PV Generators Connected to Weak Grid

For the LCL-Filtered single-stage photovoltaic (PV) generators, the low-frequency power oscillation (<50 Hz) occurs frequently when they are connected to the weak grid, whose oscillation mechanism has been a hot topic recently. However, the existing stability analysis methods rarely take the complete model of the PV generators into consideration, thus the accuracy and completeness of the corresponding conclusions are influenced. In this paper, a novel stability analysis method is proposed to obtain the more accurate and complete results for the LCL-Filtered single-stage PV generators. First, the complete model of the PV generators is established including the perturbation and observation (P&O) based PV power loop and dc voltage loop, which are rarely considered by the existing stability analysis methods. Especially, the P&O based PV power loop is nonlinear and discontinuous, and the conventional small-signal modeling is inapplicable. Hence, its influence is completely ignored in the existing stability analysis methods. Second, considering the nonlinear discontinuous link, the describing function method is adopted to analyze the whole system stability based on the established complete model. In this way, the accuracy and completeness of the stability analysis are enhanced. Furthermore, for the critically stable state, both the oscillation amplitude and frequency can be calculated accurately. At the same time, different influence factors are analyzed quantitatively including the operation points, grid strength, and the interaction of multiple control loops. It is first revealed that the grid impedance has different influence on the system high-frequency and low-frequency stability. Also, the proposed analysis method and the conventional method are compared, which presents the advantages of the proposed analysis method. Finally, all the theoretical analyses are verified by the real-time hardware-in-loop tests.
GAMBARAN FAKTOR PENYEBAB PROKRASTINASI AKADEMIK SISWA SMA KELAS XI SMAN 1 BATUJAJAR DIMASA PANDEMI COVID-19

The current condition of the pandemic Covid-19 has caused the government to implemented online learning. Students are required to be able adapted the new conditions, namely learning through online media that can help students learn during the pandemic Covid-19. The purposed of this study was to described the factors causing academic procrastination of class XI IPS 5 students at SMAN 1 Batujajar during the pandemic Covid-19. This research used descriptive qualitative method. The data collection techniques used such as interviews, observation and documentation. Based on the results of the research, the factors that cause academic procrastination to the four students, students do not understand the material presented by the teacher, students are not confident in their abilities, students are not able to manage time to do assignments with other activities, students feel bored because of online learning at home, lack of attention and encouragement of motivation to learn from parents, and constraints on signals, handphone, internet quotas.Keywords: Pandemic Covid-19, Academic Procrastination
A Feedback Linearization-Based Motion Controller for a UWMR with Experimental Evaluations

Summary In this paper, the feedback linearization approach is used to introduce a motion controller for unicycle-type wheeled mobile robots (UWMRs). The output function is defined as a linear combination of the error state. The novel scheme is firstly tested in numerical simulation and compared with its corresponding experimental result. Three controllers are taken from the literature and compared to the proposed approach by means of experiments. The gains of the experimentally tested controllers are selected to obtain identical energy consumption. The Optitrack commercial vision system and Pioneer P3-DX UWMR are used in real-time experimental tests. In addition, two sets of experimental results for different motion tasks are provided. The results show that the proposed controller presents the best tracking accuracy.
Typical rank of coin-toss power-law random matrices over GF(2)

Random linear systems over the Galois Field modulo 2 have an interest in connection with problems ranging from computational optimization to complex networks. They are often approached using random matrices with Poisson-distributed or finite column/row-sums. This technical note considers the typical rank of random matrices belonging to a specific ensemble wich has genuinely power-law distributed column-sums. For this ensemble, we find a formula for calculating the typical rank in the limit of large matrices as a function of the power-law exponent and the shape of the matrix, and characterize its behavior through "phase diagrams" with varying model parameters.
Elliptic Boundary Value Problems in Domains with Point Singularities

Introduction Part 1: Boundary value problems for ordinary differential equations on the half-axis Elliptic boundary value problems in the half-space Elliptic boundary value problems in smooth domains Variants and extensions Part 2: Elliptic boundary value problems in an infinite cylinder Elliptic boundary value problems in domains with conical points Elliptic boundary value problems in weighted Sobolev spaces with nonhomogeneous norms Variants and extensions Part 3 Elliptic boundary value problems in domains with exterior cusps Elliptic boundary value problems in domains with inside cusps Bibliography Index List of symbols.
Resistive Switching and Synaptic Characteristics in ZnO/TaON-Based RRAM for Neuromorphic System

We fabricated an ITO/ZnO/TaON/TaN device as nonvolatile memory (NVM) with resistive switching for complementary metal-oxide-semiconductor (CMOS) compatibility. It is appropriate for the age of big data, which demands high speed and capacity. We produced a TaON layer by depositing a ZnO layer on a TaN layer using an oxygen-reactive radio frequency (RF) sputtering system. The bi-layer formation of ZnO and TaON interferes with the filament rupture after the forming process and then raises the current level slightly. The current levels were divided into high- and low-compliance modes. The retention, endurance, and pulse conductance were verified with a neuromorphic device. This device was stable and less consumed when it was in low mode rather than high mode.
HUMANISTIC HIERARCHY OF NEEDS ON AUGGIE'S PERSONALITY IN WONDER MOVIE

A humanistic theoretical perspective is a perspective that promotes conscious experience, personal responsibility, and the explanation of experience. Therefore, this research aims to describe the personality of Auggie in Wonder movie based on Humanistic Hierarchy of Needs’ theory.This research used descriptive qualitative method typically library research with textual analysis since data of this research are in the form of sentences and dialogues. The primary data source is Wonder movie (2017). This research used psychology of literature as the approach and used Maslow's theory of humanistic hierarchy of human needs (1987). The result of this research shows that Auggie’s personalities are clearly described through five classification based on the stage of humanistic hierarchy of needs and each explains the personality formed through Auggie’s process of fulfillment of his needs which are Wise, inferior, friendly and kind, smart, strong and brave.
The Prevalence of Glaucoma in the Jirel Ethnic Group of Nepal

Glaucoma is one of the leading causes of blindness worldwide with individuals in Asia disproportionately affected. Using a cross-sectional study design as part of the Jiri Eye Study, we assessed the prevalence of glaucoma in the Jirel population of Nepal and provide new information on the occurrence of glaucoma in south central Asia. Over a four-year period, 2,042 members of the Jirel population, aged 18 years and older, underwent a detailed ocular examination. Glaucoma was diagnosed using the International Society of Geographical and Epidemiological Ophthalmology criteria. The mean (SD) age at exam was 42.3 (16.7) years and 54.1% of the sample was female. In the total sample, the mean (SD) intraocular pressure (IOP) and vertical cup-to-disc ratio (VCDR) was 14.55 (2.42) mmHg and 0.31 (0.15), respectively. The 97.5th and 99.5th percentile for IOP and VCDR was 20 mmHg and 22 mmHg, and 0.7 and 0.8, respectively. The overall prevalence of glaucoma in the population was 2.30% (n = 47). Of these 47 individuals, 37 (78.7%) had primary open angle glaucoma, 6 (12.8%) had primary angle closure glaucoma, and 4 (8.5%) had secondary glaucoma. There was a significant (p = 5.86×10−6) increase in the prevalence of glaucoma with increasing age overall and across glaucoma subtypes. Six individuals with glaucoma (12.8%) were blind in at least one eye. Of the individuals with glaucoma, 93.6% were previously undiagnosed. In individuals aged 40 years or older (n = 1057, 51.4% female), the mean (SD) IOP and VCDR was 14.39 (2.63) mmHg and 0.34 (0.16), respectively, and glaucoma prevalence was 4.16% (n = 44). The prevalence of glaucoma and undiagnosed disease is high in the Jirel population of Nepal. This study will inform strategies to minimize glaucoma-associated burden in Nepal.
Atypical Serogroup IVb-v1 of Listeria monocytogenes Assigned to New ST2801, Widely Spread and Persistent in the Environment of a Pork-Meat Producing Plant of Central Italy

In this study, we characterized 84 Listeria monocytogenes (Lm) strains having an atypical IVb-v1 profile and isolated in a meat producing plant of Central Italy. They were assigned to the new MLST type ST2801 (CC218). The new ST was widespread in the food-producing environment where it was able to persist for over a year even after cleaning and sanitation. Cluster analysis identified three main clusters genetically close to each other (0–22 allelic differences and 0–28 SNPs) from two different cgMLST types, suggesting a common source. The coexistence of closely related clusters over time could be the result of a different evolution path starting from a common ancestor first introduced in the plant and/or the consequence of the repetitive reintroduction of closely related clones probably by raw materials. All the strains presented several determinants for heavy metals resistance, stress response, biofilm production, and multidrug efflux pumps with no significant differences among the clusters. A total of 53 strains carried pLI100 and the j1776 plasmids, while in one strain, the pLM33 was found in addition to pLI100. Only the strains carrying plasmids presented cadA and cadC for cadmium resistance and the mco gene encoding a multicopper oxidase and gerN for an additional Na+/H+-K+ antiporter. All the strains presented a virulence profile including a full-length inlA gene and the additional LIPI-3. The isolation of a new ST with a large pattern of stress-adaptation genes and able to persist is an important contribution to deepening the current knowledge on the uncommon IVb-v1 and in general on the genomic diversity of Lm.
Suppressors of Cytokine Signaling Are Decreased in Major Depressive Disorder Patients

There is strong evidence for an association between major depressive disorder (MDD) and inflammation. However, some studies have not observed an increase in inflammatory cytokines in MDD, and the mechanism behind this is unknown. In the present study, we evaluated MDD severity using the Montgomery–Åsberg Depression Rating Scale (MADRS) and quantified mRNA levels of the blood inflammatory cytokines interleukin (IL) 1β, IL-6 and tumor necrosis factor alpha (TNF-α), as well as negative regulators of cytokine signaling—comprising IL-10, IL-1RA, SOCS1, SOCS2 and SOCS3—in MDD patients (n = 36), with a focus on mild MDD, and normal controls (NC, n = 30). We also measured the serum levels of IL-1β and IL-6. Neither the blood mRNA nor the protein levels of inflammatory cytokines were significantly elevated in the MDD group compared with the NC group. However, we observed significant decreases in SOCS1, SOCS2 and SOCS3 mRNA in the MDD group compared to the NC group. A significant finding was a decrease in SOCS3 mRNA after remission from MDD, suggesting that SOCS3 is a trait marker in depressive symptoms. We consider that our findings would be useful in elucidating the pathophysiological mechanism of depression.
Dexterous Remote Manipulation by Means of a Teleoperation System

Summary Humans are experts in manipulation and grasping tasks. However, several industrial tasks represent a risk to human operators, for instance, handling radioactive material or transporting heavy objects. Teleoperation robotic schemes extend human capabilities, but they are highly nonlinear systems. In this paper, we address the problem of dexterous remote manipulation by means of a unilateral heterogenous teleoperation scheme composed by a single-master and multiple-slave manipulators handling a rigid object. In order to achieve a stable grasp, a decentralized force/position controller with continuous and bounded input torques based on the Orthogonalization Principle and a second-order sliding mode control is proposed for the slave robots. In addition, a trajectory planning method based on holonomic constraints is proposed to control multiple-slave manipulators with a single-master device. Experimental results are presented to evaluate the performance of the proposed approach.
The effects of ‘sanctuary city’ policies on the local economy: empirical evidence from US counties

ABSTRACT This study derives the economic development effects of sanctuary city (SC) policies at the US county level using data from close to 3,000 counties between 2013 and 2017. A county is taken to provide sanctuary to undocumented immigrants if county jails do not accept ICE detainer requests, i.e. do not hold detainees beyond their original release dates. Endogeneity problems and fixed effects in the panel data are fully accounted for by combining coarsened exact matching with the fixed effects instrumental variables method. We can infer that SC policy probably is a significant driver of economic development. The results show that implementing an SC policy for 2.8–3.4 years lowers the unemployment rate by 0.18 percentage points, reduces wages by 1.6%, and increases housing prices by 5.5%, suggesting that these policies have positive effects on the local economy and can contribute to reversing economic declines in some jurisdictions. Highlights The economic development effects of sanctuary city (SC) policies are derived using data from about 3,000 counties between 2013 and 2017. Endogeneity problems and fixed effects are addressed by combining coarsened exact matching with the fixed effects instrumental variables method. Implementing an SC policy for 2.8–3.4 years lowers the unemployment rate by 0.18 percentage points, reduces wages by 1.6%, and increases housing prices by 5.5%. Immigrant-inclusive policies have positive effects on the local economy and can contribute to reversing economic decline.
Do Ideas Change Policies? Some Reflections on Ecosystem Services in Environmental Decision-Making

Ecosystems play crucial functions in our economic and social well-being, known as Ecosystem Services (ESs). The uptake of ESs in national public policies and decision-making is advancing slowly, and the application of the concept still lags behind in many national and subnational systems within the European Union (EU) and beyond. Delays are particularly long in the EU’s Outermost Regions (ORs) and Overseas Countries and Territories (OCTs) as well as in the Overseas Territories (OTs) of the United Kingdom. This article presents the research conducted in some of these ORs, OCTs and OTs—internationally acknowledged as biodiversity hotspots—and frames it in the context of the relationship between ideational innovation and institutional change. In particular, it investigates whether, to what extent and how ideas can cause changes in the status quo of laws, regulations and administrative practices that are designed to protect nature. The article also explores the major obstacles faced by ideas in the attempt of causing political, administrative and policy change, and disrupting existing patterns of decision-making. Finally, it recommends possible lines of actions to circumvent these cognitive, organisational and political constraints.
The influence of situational and environmental factors on match-running in soccer: a systematic review

ABSTRACT It is common practice amongst researchers and practitioners to monitor the effects of external load via electronic tracking systems. Both semi-automatic multiple camera systems and global positioning system technologies are used worldwide to quantify match-running. As soccer is a global game, the playing environments can differ, with heat and altitude being factors that may impact players running performance. Further, tactical and situational match factors may also have an effect on match-running performance. Therefore, the purpose of this article is to systematically review current literature on the environmental and situational factors affecting match-running in soccer. An electronic database search (PubMed, EBSCOHost and Web of Science) was conducted. Further articles known to the authors were also included. A total of 1806 studies were identified, with only 28 meeting the specific search criteria. The main findings were that trivial changes in match-running were observed with regards to possession, team formation and match status (win, lose, draw). Match-running was affected by temperatures as low as 20°C, with both high- and very-high speed running decreasing (8.5% and 15% respectively), whilst altitude lowers the number of high-speed efforts completed by players (7.1–25%). Findings indicate that environmental factors have a strong influence on the variability and differences observed in match-running performances from match-to-match. Further understanding of the effect of match factors on match-running would allow better planning to minimise possible detrimental factors, particularly in relation to gender.
Effects of Collagen Hydrolysate From Large Hybrid Sturgeon on Mitigating Ultraviolet B-Induced Photodamage

Ultraviolet B (UVB) radiation leads to the excessive accumulation of reactive oxygen species (ROS), which subsequently promote inflammation, degradation of the extracellular matrix, and photoaging in skin. Thus antioxidant activity is particularly important when screening for active substances to prevent or repair photodamage. Marine fish-derived bioactive peptides have become a trend in cosmetics and functional food industries owing to their potential dermatological benefits. In this study, 1-diphenyl- 2-pycryl-hydrazyl (DPPH) scavenging activity was selected to optimize the hydrolysis conditions of sturgeon skin collagen peptides with antioxidant activity. The optimal hydrolysis conditions for sturgeon skin collagen hydrolysate (SSCH) were determined by response surface methodology, which comprised an enzyme dosage of flavorzyme at 6,068.4 U/g, temperature of 35.5°C, pH of 7, and hydrolysis time of 6 h. SSCH showed good radical-scavenging capacities with a DPPH scavenging efficiency of 95%. Then, the effect of low-molecular-weight SSCH fraction (SSCH-L) on UVB irradiation-induced photodamage was evaluated in mouse fibroblast L929 cells and zebrafish. SSCH-L reduced intracellular ROS levels and the malondialdehyde content, thereby alleviating the oxidative damage caused by UVB radiation. Moreover SSCH-L inhibited the mRNA expression of genes encoding the pro-inflammatory cytokines IL-1β, IL-6, TNF-α, and Cox-2. SSCH-L treatment further increased the collagen Ⅰα1 content and had a significant inhibitory effect on matrix metalloproteinase expression. The phosphorylation level of JNK and the expression of c-Jun protein were significantly reduced by SSCH-L. Additionally, SSCH-L increased the tail fin area at 0.125 and 0.25 mg/ml in a zebrafish UVB radiation model, which highlighted the potential of SSCH-L to repair UVB-irradiated zebrafish skin damage. Peptide sequences of SSCH-L were identified by liquid chromatography-tandem mass spectrometry. Based on the 3D-QSAR modeling prediction, six total peptides were selected to test the UVB-protective activity. Among these peptides, DPFRHY showed good UVB-repair activity, ROS-scavenging activity, DNA damage-protective activity and apoptosis inhibition activity. These results suggested that DPFRHY has potential applications as a natural anti-photodamage material in cosmetic and functional food industries.
RPL Routing Protocol Performance in Smart Grid Applications Based Wireless Sensors: Experimental and Simulated Analysis

The Advanced Metering Infrastructure (AMI) is one of the Smart Grid (SG) applications that used to upgrade the current power system by proposing a two-way communication system to connect the smart meter devices at homes with the electric control company. The design and deployment of an efficient routing protocol solution for AMI systems are considered to be a critical challenge due to the constrained resources of the smart meter nodes. IPv6 Routing Protocol for Low Power and Lossy Networks (RPL) was recently standardized by the IETF and originally designed to satisfy the routing requirements of lossy and low power networks like wireless sensors (WSN). We have two kinds of AMI applications, on one hand AMI based WSN and on the other hand AMI based PLC communication. In this paper, we proposed a real and simulated implementation of RPL behavior with proper modifications to support the AMI based WSN routing requirements. We evaluate RPL performance using 140 nodes from the wireless sensor testbed (IoT-LAB) and 1000 nodes using Cooja simulator measure RPL performance within medium and high-density networks. We adopted two routing metrics for path selection: First one is HOP Count (HC) and the second is Expected Transmission Unit (ETX) to evaluate RPL performance in terms of packet delivery ratio; network latency; control traffic overhead; and power consumption. Our results illustrate that routes with ETX calculations in low and medium network densities outperform routes using HC and the performance decreases as the network becomes dense. However, Cooja implementation results provides an average reasonable performance for AMI with high-density networks; still many RPL nodes suffering from high packet loss rates, network congestion and many retransmissions due to the selection of optimal paths with highly unreliable links.
Hybrid Taguchi Genetic Algorithm-Based AGC Controller for Multisource Interconnected Power System

Abstract— This article presents hybrid Taguchi-genetic algorithm (HTGA) tuned automatic generation controller for two areas interconnected multisource power system model. The control areas consist of thermal, hydro, and doubly fed induction generator-based wind power plants. The optimal tuning of AGC controller using genetic algorithm is less robust due to larger standard deviation of the fitness values. Therefore, Taguchi method which is based on modified statistical approach and has systematic reasoning ability is used to enhance the performance of genetic algorithm. The simulation study is carried out with the optimum gains of AGC controller obtained from HTGA, conventional GA and conventional techniques. The dynamic stability of the power system model is examined to analyze the performance of the HTGA technique. From investigations it is quite clear that the optimum gains of AGC system obtained from HTGA technique has better response in the dynamic stability of the interconnected multisource power system as compared to genetic algorithm and conventional technique.