Miracle-dz/UniFAR-FTUs huggingface dataset:
Reactive power coordinated optimisation method with renewable distributed generation based on improved harmony search

The reactive power coordinated optimisation problem for distribution network (DN) with the integration of renewable distributed generation (DG) is investigated in this study. By actively participating in reactive power control together with an under-load tap changer and shunt capacitors, DG can operate more effectively in the DN. Non-dispatchable DG is considered in the coordinated optimisation method. The objective of the proposed reactive power coordinated optimisation method is to minimise active power loss and to decrease the number of switching device operations while maintaining the grid voltage within the allowable range. The optimisation problem is to solve a variable combination including integers and continuous variables, which will formulate a mixed integer non-linear programming (MINLP) problem. The control variable includes operations of traditional reactive power control devices and the reactive power adjustments of DGs. To solve the MINLP problem, a heuristic searching method, an improved harmony search algorithm is proposed with adaptive parameters process. Numerical tests on a standard 10-kV distribution system and a real distribution system demonstrate the applicability of the proposed reactive power coordinated optimisation method.
Person Re-Identification Through Wi-Fi Extracted Radio Biometric Signatures

Person re-identification (Re-ID) is a challenging task that tries to recognize a person across different cameras, and that can prove useful in video surveillance as well as in forensics and security applications. However, traditional Re-ID systems analyzing image or video sequences suffer from well-known issues such as illumination changes, occlusions, background clutter, and long-term re-identification. To simultaneously address all these difficult problems, we explore a Re-ID solution based on an alternative medium that is inherently not affected by them, i.e., the Wi-Fi technology. The latter, due to the widespread use of wireless communications, has grown rapidly and is already enabling the development of Wi-Fi sensing applications, such as human localization or counting. These sensing procedures generally exploit Wi-Fi signals variations that are a direct consequence, among other things, of human presence, and which can be observed through the channel state information (CSI) of Wi-Fi access points. Following this rationale, in this paper, for the first time in literature, we show how the pervasive Wi-Fi technology can also be directly exploited for person Re-ID. More accurately, Wi-Fi signals amplitude and phase are extracted from CSI measurements and analyzed through a two-branch deep neural network working in a siamese-like fashion. The designed pipeline can extract meaningful features from signals, i.e., radio biometric signatures, that ultimately allow the person Re-ID. The effectiveness of the proposed system is evaluated on a specifically collected dataset, where remarkable performances are obtained; suggesting that Wi-Fi signal variations differ between different people and can consequently be used for their re-identification.
Bedrock Geochemistry and Alteration History of the Clay‐Bearing Glen Torridon Region of Gale Crater, Mars

Glen Torridon is a topographic trough located on the slope of Aeolis Mons, Gale crater, Mars. It corresponds to what was previously referred to as the “clay‐bearing unit,” due to the relatively strong spectral signatures of clay minerals (mainly ferric smectites) detected from orbit. Starting in January 2019, the Curiosity rover explored Glen Torridon for more than 700 sols (Martian days). The objectives of this campaign included acquiring a detailed understanding of the geologic context in which the clay minerals were formed, and determining the intensity of aqueous alteration experienced by the sediments. Here, we present the major‐element geochemistry of the bedrock as analyzed by the ChemCam instrument. Our results reveal that the two main types of bedrock exposures identified in the lower part of Glen Torridon are associated with distinct chemical compositions (K‐rich and Mg‐rich), for which we are able to propose mineralogical interpretations. Moreover, the topmost stratigraphic member exposed in the region displays a stronger diagenetic overprint, especially at two locations close to the unconformable contact with the overlying Stimson formation, where the bedrock composition significantly deviates from the rest of Glen Torridon. Overall, the values of the Chemical Index of Alteration determined with ChemCam are elevated by Martian standards, suggesting the formation of clay minerals through open‐system weathering. However, there is no indication that the alteration was stronger than in some terrains previously visited by Curiosity, which in turn implies that the enhanced orbital signatures are mostly controlled by non‐compositional factors.
Four New Species of Zosimeidae (Copepoda: Harpacticoida) from the Southwestern Gulf of Mexico

As a part of ongoing efforts for monitoring benthic ecosystem in the Gulf of Mexico, Harpacticoid copepods were collected from the southwestern Gulf of Mexico. Among them we report three new species of Zosime, and a new species of Peresime for the study area. Zosime is the most specious-rich genus in the family. Three species of Zosime were morphologically similar to Z. paratypica Becker and Schriever, 1979, Z. atlantica Bodin, 1968, and Z. destituta Kim J.G. , Jung and Yoon, 2016, respectively. However, all three species have unique characteristics that distinguish them from similar species such as setal formulae and shape of female P5 and caudal rami. The new species of Peresime has similar morphological characters with P. reducta (Becker and Schriever, 1979). These two species can be distinguished by differences in mouth parts and the length of the setae on P2. This is the first report on the genera Zosime and Peresime from the Gulf of Mexico. We also discuss the global diversity and distribution of Zosimeidae and provide a key to the genera of the family and species of each genus, including the four new species from the Gulf of Mexico.
Producción orgánica y capacidad antioxidante de frutos de pepino

Organic production and antioxidant capacity of cucumber fruit There is an increasing public interest about the harmful effects of agricultural practices on the environment. This fact has promoted the sustainable crop production, especially regarding fertilization. Vermicompost is an organic fertilizer that has gained importance as a nutritional source as well as a component of horticultural crop substrate. The aim of the current study was to establish a rate for a Vermicompost: Sand (VC:S) mixture that increases yield and antioxidant capacity in cucumber fruits (Cucumis sativus L.)
Automated culture: introduction

ABSTRACT Automation has a long history in cultural production, but the contemporary moment presents a range of new possibilities and demands for the deployment of automated and autonomous systems in the shaping of our cultural and social worlds. The cultural implications of the deployment of automated systems for producing, curating, and distributing a growing range of cultural texts and artifacts extend beyond the realm of content to encompass their pace, rhythm, and scale. Understanding the significance of these shifts remains a central task for cultural studies research that builds on the field’s historical engagement with the entwinement of cultural practices, social relations, and power. This theme issue builds on the historical and recent concerns of cultural studies to provide a range of approaches to the cultural significance of automation. Given the scope of the transformations, the coverage of possible topics is indicative rather than exhaustive. The articles in this collection range across the realms of automated news curation, credit scoring, image curation, deep fakes, data science, the gig economy, and content moderation. They engage with possible responses to the real and potential pathologies of automation in the cultural realm – while highlighting the links between culture, politics, and economics. Taken together they develop a range of critical approaches to the sometimes creeping, sometimes galloping automation of cultural production, curation, and distribution. While stressing the moments of historical continuity with earlier forms of bureaucratic and administrative rationality, they simultaneously indicate that we are, in many ways, still in the very early stages of a process that is likely to encompass an expanding range of cultural practices and texts.
Evaluation of Open-Pollinated and Hybrid Maize Varieties in the Spring Season at Baitadi District, Nepal

Being a maize producing region, cultivation of hybrid and improved maize varieties in the spring season is very low in Baitadi district. In order to examine the performances of different maize varieties, five maize varieties including both open-pollinated (i.e. Arun-2, Arun-4 and Rampur composite) and hybrid varieties (i.e. Rajkumar and Rampur Hybrid-10) were tested using Randomized Complete Block Design (RCBD) in spring season during February to August, 2020 at Dasarathch and municipality-1, Baitadi. The highest days to emergence of seedlings was in Rampur Hybrid-10 (30 days) and the lowest days to emergence was in Arun-2 (23 days) and Arun-4 (23 days), respectively. The plant height was significantly higher in Rajkumar (156.4 cm), whereas the leaf area index were significantly higher in Arun-2 (4.36 cm). Similarly, the phenological behavior like days to 50% tasseling (112 days) and silking (119 days) were significantly earlier in Arun-4. Likewise, yield attributing characteristics like cob length, cob diameter, number of rows/cobs, number of kernels/rows, shelling%, thousand grain weight (TGW) were found significantly higher in hybrid maize varieties as compared to openpollinated varieties. Grain yield was found significantly higher in hybrids Rajkumar recording yield of 5.32 Mt ha-1 closely followed by Rampur Hybrid-10 (4.75 Mt ha-1) whereas open-pollinated Rampur composite, Arun-2 and Arun-4 recorded grain yield of 4.58 Mt ha-1, 3.99 Mt ha-1 and 2.33 Mt ha-1 respectively. The results indicated that hybrid varieties were promising and should be promoted for general cultivation in the hills area of Nepal. SAARC J. Agric. , 19(2): 123-136 (2021)
If You Have Choices, Why Not Choose (and Share) All of Them? A Multiverse Approach to Understanding News Engagement on Social Media

Abstract Social sciences are facing a crisis of replicability, and concerns about the confidence in quantitative findings have resulted in an increasing interest in open science practices across many fields. In this article we introduce scholars of (digital) journalism studies and communication science to multiverse analysis while addressing the possible reasons of heterogeneity in the findings of research on engagement with news on social media. Using the question of which news article characteristics predict news engagement on social media, this illustration of the multiverse approach shows how different measurement, data processing, and modelling choices lead to divergent conclusions. In particular, we show how the selection of widely used automated text analysis tools and preprocessing steps influence the conclusions drawn from the analysis. We also use this illustration to guide interested scholars through the different steps of doing a multiverse analysis. More broadly, we demonstrate how multiverse analysis can be an open and transparent research approach in a field that is increasingly faced with a wide range of analytical choices.
Introducing an Ethics Framework for health priority-setting in South Africa on the path to universal health coverage.

BACKGROUND South Africa (SA) has embarked on a process to implement universal health coverage (UHC) funded by National Health Insurance (NHI). The 2019 NHI Bill proposes creation of a health technology assessment (HTA) body to inform decisions about which interventions NHI funds will cover under UHC. In practice, HTA often relies mainly on economic evaluations of cost-effectiveness and budget impact, with less attention to the systematic, specific consideration of important social, organisational and ethical impacts of the health technology in question. In this context, the South African Values and Ethics for Universal Health Coverage (SAVE-UHC) research project recognised an opportunity to help shape the health priority-setting process by providing a way to take account of multiple, ethically relevant considerations that reflect SA values. The SAVE-UHC Research Team developed and tested an SA-specific Ethics Framework for HTA assessment and analysis. OBJECTIVES To develop and test an Ethics Framework for use in the SA context for health priority-setting. METHODS The Framework was developed iteratively by the authors and a multidisciplinary panel (18 participants) over a period of 18 months, using the principles outlined in the 2015 NHI White Paper as a starting point. The provisional Ethics Framework was then tested with multi-stakeholder simulated appraisal committees (SACs) in three provinces. The membership of each SAC roughly reflected the composition of a potential SA HTA committee. The deliberations and dedicated focus group discussions after each SAC meeting were recorded, analysed and used to refine the Framework, which was presented to the Working Group for review, comment and final approval. RESULTS This article describes the 12 domains of the Framework. The first four (Burden of the Health Condition, Expected Health Benefits and Harms, Cost-Effectiveness Analysis, and Budget Impact) are commonly used in HTA assessments, and a further eight cover the other ethical domains. These are Equity, Respect and Dignity, Impacts on Personal Financial Situation, Forming and Maintaining Important Personal Relationships, Ease of Suffering, Impact on Safety and Security, Solidarity and Social Cohesion, and Systems Factors and Constraints. In each domain are questions and prompts to enable use of the Framework by both analysts and assessors. Issues that arose, such as weighting of the domains and the availability of SA evidence, were discussed by the SACs. CONCLUSIONS The Ethics Framework is intended for use in priority-setting within an HTA process. The Framework was well accepted by a diverse group of stakeholders. The final version will be a useful tool not only for HTA and other priority-setting processes in SA, but also for future efforts to create HTA methods in SA and elsewhere.
Turbidimetric Monitoring of Phase Separation in Aqueous Solutions of Thermoresponsive Polymers

A method for the experimental determination of turbidity in thermoresponsive polymer solutions is presented. The method is based on measuring the intensity of light streams: weakened and backscattered from the sample, which is in the region of the volume phase transition. The turbidimeter developed by us, unlike industrial devices of this type, is equipped with a thermostat that allows to study the dependence of the solution turbidity on the temperature. The device operates automatically, the values of luminosity and temperature from digital sensors are processed by the microcontroller and transmitted via the RS-232 protocol to USB ports of a personal computer. The error of luminosity measurement does not exceed 0.1 lux, the temperature measurement accuracy is ± 0.1 °C. This article demonstrates an example of using the designed turbidimeter to study the first-order phase transition in an aqueous solution of hydroxypropylcellulose (2 wt. %) in the presence (absence) of NaCl ions. It is assumed that the sol-gel transition in the investigated solution is due to swelling of polymer coils and their subsequent aggregation. In our opinion, the displacement of the phase transition temperature is due to additional swelling of polymer coils owing to shielding of the electrostatic interaction of monomers in the presence of NaCl ions. It is shown that the intensity of backscattered light corresponds to the kinetics of the formation of the gel network, which makes it possible to establish the dimensions of formed aggregates in the network nodes.
High-Performance Magnetoinductive Directional Filters

Multiport magnetoinductive (MI) devices with directional filter properties are presented. Design equations are developed and solved using wave analysis and dispersion theory, and it is shown that high-performance directional filters can be realised for use both in MI systems with complex, frequency-dependent impedance and in conventional systems with real impedance. Wave analysis is used to reduce the complexity of circuit equations. High-performance MI structures combining directional and infinite rejection filtering are demonstrated, as well as multiple-passband high-rejection filtering. A new method for improving filtering performance through multipath loss compensation is described. Methods for constructing tuneable devices using toroidal ferrite-cored transformers are proposed and demonstrated, and experimental results for tuneable MI directional filters are shown to agree with theoretical models. Limitations are explored, and power handling sufficient for HF RFID applications is demonstrated, despite the use of ferrite materials.
Salient design features that your social media platform needs: The case of online communities of interest

We discuss the importance of salient design features (which support purposeful action and relate to functional affordances) of customer-to-customer social media platforms that support communities of interest, focussed on open-ended data and user tasks, in contrast to business-to-customer platforms, focussed on relatively fixed data and transactions. We provide an exposition of their design features, shedding light on how they support tasks of searching and decision-making in which users elicit knowledge from their community, for targeted needs to needs which are less known and speculative. We also discuss that how our findings can be useful for designing social media platforms that support other types of online communities such as online communities of practice. Our research contributes to the ongoing discourse in the information systems field about the importance of identifying and articulating the salient design features of an information technology that is useful for theory and practice.
Parents’ Role in Supporting Their Children’s Online Learning Process

The present study examined the role of parents in supporting their children when learning through virtual means or on-line learning amid the pandemic COVID-19 outbreak. The respondents of the present study were five adults (3 males and 2 females) of different families. The study was conducted in a case study in order to allow the researchers to identify more specific data regarding the significance of parents’ role in the newly applied learning strategies as well as some potential determinants affecting their roles. The findings of the study indicate that there are some themes, which are percieved important by the parents, such as parents’ welfare, parent’s education, and time-managment. It is also found that parents’ higher education and the jobs related to pedagogy (e.g., being a teacher), can significantly help support their children learning process. Last but not least, younger ages pose more challenges to their parents as they are not really familiar with this new learning process.
Information Communication Technology Use to Improve eHealth Literacy, Technophobia, and Social Connection among Community Dwelling Older Adults

ABSTRACT The Intergenerational Forum (IF), an innovative intervention, offers andragogic programs for community-dwelling older adults, enabling them to engage in youth-led tutorials to learn about Information Communication Technology (ICT). This study examines the outcome of a 12-week class focused on encouraging intergenerational exchange and mutual aid between college students and older adults. Fifty older adults in South Korea participated in the 12-week IF program. First, older adults’ Internet usage patterns were examined. Using a pretest-posttest nonequivalent control group design with multiple outcome measures, we compared older mentees’ e-health literacy, technophobia, feelings of social isolation, and social capital following the IF classes. Our findings suggest that older adults’ adoption and employment of ICT skills improved their overall eHealth literacy and perceived usefulness of the Internet. Consequently, older IF participants with technophobia saw a decrease in anxiety, and an improvement in their confidence in using computer technology throughout the study period. Study findings imply that developing educational programs specifically designed for community dwelling elders with restricted access to ICT and little digital literacy is both desirable and feasible.
Fetal Tissue-Derived Mast Cells (MC) as Experimental Surrogate for In Vivo Connective Tissue MC

Bone-marrow-derived mast cells are matured from bone marrow cells in medium containing 20% fetal calf serum (FCS), interleukin (IL)-3 and stem-cell factor (SCF) and are used as in vitro models to study mast cells (MC) and their role in health and disease. In vivo, however, BM-derived hematopoietic stem cells account for only a fraction of MC; the majority of MC in vivo are and remain tissue resident. In this study we established a side-by-side culture with BMMC, fetal skin MC (FSMC) or fetal liver MC (FLMC) for comparative studies to identify the best surrogates for mature connective tissue MC (CTMC). All three MC types showed comparable morphology by histology and MC phenotype by flow cytometry. Heterogeneity was detected in the transcriptome with the most differentially expressed genes in FSMC compared to BMMC being Hdc and Tpsb2. Expression of ST2 was highly expressed in BMMC and FSMC and reduced in FLMC, diminishing their secretion of type 2 cytokines. Higher granule content, stronger response to FcεRI activation and significantly higher release of histamine from FSMC compared to FLMC and BMMC indicated differences in MC development in vitro dependent on the tissue of origin. Thus, tissues of origin imprint MC precursor cells to acquire distinct phenotypes and signatures despite identical culture conditions. Fetal-derived MC resemble mature CTMC, with FSMC being the most developed.
Improved Multiple Vector Representations of Images and Robust Dictionary Learning

Each sparse representation classifier has different classification accuracy for different samples. It is difficult to achieve good performance with a single feature classification model. In order to balance the large-scale information and global features of images, a robust dictionary learning method based on image multi-vector representation is proposed in this paper. First, this proposed method generates a reasonable virtual image for the original image and obtains the multi-vector representation of all images. Second, the same dictionary learning algorithm is used for each vector representation to obtain multiple sets of image features. The proposed multi-vector representation can provide a good global understanding of the whole image contour and increase the content of dictionary learning. Last, the weighted fusion algorithm is used to classify the test samples. The introduction of influencing factors and the automatic adjustment of the weights of each classifier in the final decision results have a significant indigenous effect on better extracting image features. The study conducted experiments on the proposed algorithm on a number of widely used image databases. A large number of experimental results show that it effectively improves the accuracy of image classification. At the same time, to fully dig and exploit possible representation diversity might be a better way to lead to potential various appearances and high classification accuracy concerning the image.