Miracle-dz/UniFAR-FTUs huggingface dataset:
A Compact Dual-Band Dual-Circularly Polarized SIW Cavity-Backed Antenna Array for Millimeter-Wave Applications

A compact millimeter-wave (mm-Wave) dual-band dual-circularly polarized (CP) antenna based on substrate integrated waveguide (SIW) cavity-backed structure is proposed in this letter. By introducing the square aperture with two symmetric perturbation notches on the SIW cavity, right-hand CP (RHCP) can be generated at the low frequency band. On this basis, the dumbbell-shaped patch is placed inside the square aperture to generate left-hand CP (LHCP) at the high frequency band. To optimize the impedance matching and adjust resonant frequency, stacked parasitic patches are adopted. In addition, the two shorted vias are introduced to realize the independent tuning of high frequency band. The measured results show that the array achieves the impedance bandwidths of 7.3% and 7.5%, AR bandwidths of 2.8% and 2.6%, with gains of 18.2 and 18.5 dBic at 28 and 38 GHz, respectively. The proposed array will be a potential candidate component for 5G mm-Wave full-duplex wireless communication systems.
Predictor-Based Extended State Observer for Disturbance Rejection Control of Multirate Systems With Measurement Delay

This article investigates the multirate disturbance rejection control problem for linear control systems with mismatched disturbance and measurement delay using predictor-based extended state observer. A new extended state observer together with output predictor is first designed to obtain the estimation values of system state and mismatched disturbance, where output predictor is used to compensate the influences of measurement delay and sampling of output. To attenuate the undesirable influence of mismatched disturbance, we then design a new sampled-data robust controller with disturbance compensation, and the updating rate of the proposed controller is allowed to be different from that of the sensor. Thanks to prediction and disturbance/uncertainty estimation and attenuation techniques, the disturbance rejection property of the resultant closed-loop control systems is enhanced despite the multirate and measurement delay. Some sufficient conditions are presented to ensure the stability property of the resultant control systems. We finally consider the application of the visual servoing control system for an inertially stabilized platform, and the experiment results verify superiorities of the predictor-based disturbance rejection control method proposed in the article.
A Dynamic Modeling Approach to Estimate Nitrogen Loading in Coastal Bays on Cape Cod, Massachusetts, USA

Solving estuarine water quality problems on Cape Cod, Massachusetts, or elsewhere, is difficult. Nitrogen from septic systems takes years to decades to travel by groundwater to estuaries, depending on local hydrogeology, meaning that nitrogen loading in future years may exceed current conditions. We created a dynamic nitrogen model of Cape Cod’s 54 estuaries to better understand 1. how past and present conditions, including legacy nitrogen in groundwater, influence future nitrogen loading, and 2. how different development and nitrogen abatement scenarios could have additional effects. We find that 43 of 54 estuaries are not in equilibrium with current watershed nitrogen loading levels; this increases to 52 of 54 under a buildout scenario. Watersheds contain up to 1000 tons of legacy nitrogen in groundwater; yet, we find that a rapid investment in source control successfully reduces nitrogen loading, revealing a wide range of potential outcomes that depend ultimately on the resources and attention invested in the problem.
Study on Noise Reduction Mechanism of Flow Induced Noise for Flexible Body Based on Fluid-structure Interaction

： The flow induced noise by the interaction between structure and fluid for rudder is one of dominant sources of hydrodynamic noise, featured by broadband noise, which is difficult to be controlled by ordinary noise reduction measures, but a solution is provided by flexible rudder. The unsteady flow field and flow induced noise of a flexible NACA0018 airfoil are simulated using large eddy simulation method, along with the FW-H equation which considers the arbitrary boundary movement. The interaction between flexible body and fluid is taken into account by weak coupling method. Then the influence of airfoil’s flexible deformation on flow field, noise source, and sound radiation characters under different attack angles are analyzed systematically. The simulation results show that flow separation is postponed by the deformation, turbulence region is contracted, and wall pressure fluctuation is suppressed. The sound source intensity of transitional boundary-layer and turbulent flow are decreased, and it is reduced for laminar flow under large angle of attack, but increased under small attack angle. With attack angle increasing the radiated far-field overall sound pressure level varies in different ways in chord-length and normal directions, and their sound frequency properties are also affected by the flexible deformation unlikely.
This Program Is Brought to You By . . .: Distributing Television News Online

Journalism, television, cable, and online media are all evolving rapidly. At the nexus of these volatile industries is a growing group of individuals and firms whose job it is to develop and maintain online distribution channels for television news programming. Their work, and the tensions surrounding it, provide a fulcrum from which to pry analytically at some of the largest shifts within our media landscape. Based on fieldwork and interviews with different teams and organizations within MSNBC, this multi-disciplinary work is unique in its focus on distribution, which is rapidly becoming as central as production, to media work.
Evaluation of Imazapic and Flumioxazin Carryover Risk for Carinata (Brassica carinata) Establishment

Abstract Carinata (Brassica carinata A. Braun) is a potential crop for biofuel production, but the risk of injury resulting from carryover of soil herbicides used in rotational crops is of concern. The present study evaluated the carryover risk of imazapic and flumioxazin for carinata. Label rates of imazapic (70 g ai ha–1) and flumioxazin (107 g ai ha–1) were applied 24, 18, 12, 6, and 3 mo before carinata planting (MBP). The same herbicides were applied preemergence right after carinata planting at 1X, 0.5X, 0.25X, 0.125X, 0.063X, and 0X the label rate. When either herbicide was applied earlier than 3 MBP, there was no difference in plant density compared with the nontreated control. Carinata damage was <25% when flumioxazin or imazapic was applied at least 6 MBP in Clayton, NC (sandy loam soil), while in Jackson Springs, NC (coarser-textured soil and higher precipitation), at least 12 MPB were needed to lower plant damage to <25%. Preemergence application of 0.063X each herbicide decreased plant density by 40%, with damage reaching >25%. Quantification of herbicide residues in both soils showed that imazapic moved deeper in the soil profile than flumioxazin. This was more evident in Jackson Springs, where 0.68, 3.52, and 7.77 ng of imazapic g–1 soil were detected (15- to 20-cm depth) when the herbicide was applied at 12, 6 and 3 MBP, respectively, while no flumioxazin residues were detected at the same soil depths and times. When residues were 7.78 and 6.90 ng herbicide g–1 soil in the top 10 cm of soil for imazapic and flumioxazin, respectively, carinata exhibited at least 25% damage. Rotational intervals to avoid imazapic and flumioxazin damage to carinata should be between 6 and 12 MBP depending on soil type and environmental conditions, with longer intervals for the former than the latter.
Valuing The Wild, Remote And Beautiful: Using Public Participation Gis To Inform Tourism Planning In The Kimberley, Western Australia

The remote Kimberley region in Western Australia presents a unique nature-based tourism destination. One of the world’s last wildernesses, the Kimberley is one of the least-impacted marine environments in the world. Tourism in the region is growing rapidly, driven by stunning natural landscapes, unparalleled nature-based experiences and a vibrant indigenous culture. Despite this, there has been virtually no research into how stakeholders value the Kimberley and spatially explicit investigations are lacking. State marine protected area planning, currently in a formative stage in the region, requires such spatially explicit social data to complement existing biophysical information. This paper reports on findings from a Public Participation GIS survey with 206 stakeholders undertaken in 2015 as part of a broader research project into socio-cultural values and management preferences for the Kimberley coast. Stakeholders’ spatially linked values were collected via an internet-based mapping survey for the purpose of supporting future planning and management in the region. Stakeholders mapped over 4,100 value locations, with values relating to scenery/aesthetics, recreational fishing, Aboriginal culture and nature-based tourism being most prominent. Analysis identified a clear spatial clustering of values across the region with a number of value ‘hotspots’ evident. Tourism planners and managers can analyse these hotspots to identify areas of potential congruence and conflict, thus assisting in retaining the qualities of the region that support ongoing tourism. By generating spatially explicit information on stakeholder values and areas of importance, this research makes an important contribution to tourism planning and management in the Kimberley.
Determining shelve placement in a chain store for optimal customer interaction

Determining Shelve Placement in a Chain Store for Optimal Customer Interaction Z Olivier Department of Industrial Engineering, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa. Thesis: MEng (Ind) March 2017 Pedestrian interactions in any setting have a large impact on the pedestrians in this setting. The field of research behind these pedestrian interactions is rather young, with little research done on pedestrian interactions in a specific store. This study investigates two case studies in specific stores, in which the area covered by pedestrian foot traffic is attempted to be minimized. For each case study, there are three scenarios presented. The first scenario is the store as it currently is, the second scenario is how the pedestrian traffic would change if the amount of pedestrians that enter the store should double. The final scenario is how the pedestrian traffic would change if the layout of the shelves, and the placement of the products on the shelves should change from the layout in scenario one. The layout is changed by moving the shelves around the high pedestrian traffic areas in scenario one. The investigation of the case studies is done by gathering and analysing data, and placing all the pedestrians in different customer segments, to create a realistic simulation model in Pedestrian Dynamics. It is determined how many simulation runs are necessary to obtain statistically significant results, and the simulations are run for this number of runs. The area of high pedestrian densities is measured, and the average over all of the simulation runs is taken, to have a single value to compare to the other scenarios. All of the values for the three scenarios is then taken into comparison with one another, and the results of the simulations are discussed. ii Stellenbosch University https://scholar.sun.ac.za
Formal methods for process knowledge extraction

One approach to engineering of interoperating processes is based on different types and levels of abstraction or models. These models must express and formalize not only the structural aspect of the system components, but also their behaviour, the latter being constrained by domain-specific requirements of the process (business rules). The aim of this work is to study issues of cooperative processes engineering (engineered) models and actors (organizations, software systems, etc.) wishing to interoperate and to propose solutions to the highlighted problems.
How Much Did Internet Use Promote Grain Production?—Evidence from a Survey of 1242 Farmers in 13 Provinces in China

Increasing grain production and ensuring food security are always major issues in China, which are related to the sustainable development of the nation. The sudden outbreak of COVID-19 in 2020 has brought new challenges to global food security, which highlights the “ballast stone” and “stabilizer” role of food. China’s food security must rely on domestic production. As an important production factor, the Internet is also an important channel for farmers to obtain agricultural information, which can effectively reduce the information search cost and information asymmetry. Existing studies have mainly focused on the impact of Internet use on agricultural inputs, agricultural prices, and agricultural efficiency; there are few studies on the impact of Internet use on grain production. To fill this gap, based on the micro survey data of 1242 maize farmers in 13 provinces in China, this paper employs linear regression models and PSM methods to deeply explore the impact of Internet use on farmers’ grain production. The results show that Internet use has a significant positive impact on the grain production of farmers. Compared with the farmers who do not use the Internet, Internet use increases the maize yield of farmers by 14.25%. The heterogeneity analysis further shows that the impact of Internet use on the grain production of different farmers varies significantly: the maize yield per ha after using the Internet for farmers of younger, low education level, large-scale, and living in well-developed villages had increased by 13.65%, 15.38%, 23.94%, and 10.64%, respectively, compared with the counterfactual scenario of farmers who do not use the Internet. The results of this paper have passed the robustness test.
Culture as a predictor of effective adoption of climate-smart agriculture in Mbeere North, Kenya

The research advances the existing extension education knowledge by illustrating the relationship between culture and adoption of Climate-Smart Agriculture (CSA). Using a sample of 127, the study adopted a descriptive correlational design to gather data that addressed the hypotheses. The sample was selected randomly through systematic sampling procedures covering all parts of the sub-county. A semi-structured questionnaire was utilized to gather data. Independent samples t-test and multiple regression analysis were applied in data analysis. The results indicated that farmers who received climate-smart information compared to farmers not receiving the information demonstrated significantly higher CSA practices adoption levels. A combination of cultural elements significantly predicted the adoption of climate-smart practices. The moderate effective adoption rates witnessed may have been contributed by limited access to extension services and cultural barriers. Among the cultural elements inability of extension agents to communicate in the local language was found to be the main inhibitor to effective dissemination and subsequent adoption. Hence, extension agents conversant with local language should be recruited to break the communication barrier to improve the diffusion of CSA practices. The county extension agents should be encouraged to use a mix of mass media extension education methods so as to expand the coverage.
Foisonnement nominal et coréférence dans le texte spécialisé

Comparé au roman et au récit de voyage littéraire, l’écrit soigné en langue spécialisée se caractérise généralement par une plus grande proportion de substantifs, d’adjectifs et de prépositions, au détriment des catégories verbales et pronominales. Cette caractéristique semble transcender bien des sous-genres (médical, juridique, maritime…) et se retrouve, par exemple en droit international. La prédominance de la catégorie nominale, manifestement liée au figement terminologique et à la condensation syntaxique, va souvent de pair avec des taux de répétitions élevés. Ces répétitions semblent moins liées à des anaphores lexicales qu’à l’usage de chaînes de références ou de rafales de mots. Sous cet angle, l’écriture spécialisée peut être caractérisée par le contournement de l’anaphore pronominale ou possessive que privilégierait une écriture conforme à la norme littéraire et scolaire du français, qui combat la répétition.
The Distinct Role of the HDL Receptor SR-BI in Cholesterol Homeostasis of Human Placental Arterial and Venous Endothelial Cells

As opposed to adults, high-density lipoprotein (HDL) is the main cholesterol carrying lipoprotein in fetal circulation. The major HDL receptor, scavenger receptor class B type I (SR-BI), contributes to local cholesterol homeostasis. Arterial endothelial cells (ECA) from human placenta are enriched with cholesterol compared to venous endothelial cells (ECV). Moreover, umbilical venous and arterial plasma cholesterol levels differ markedly. We tested the hypothesis that the uptake of HDL-cholesteryl esters differs between ECA and ECV because of the differential expression of SR-BI. We aimed to identify the key regulators underlying these differences and the functional consequences. Immunohistochemistry was used for visualization of SR-BI in situ. ECA and ECV were isolated from the chorionic plate of human placenta and used for RT-qPCR, Western Blot, and HDL uptake assays with 3H- and 125I-labeled HDL. DNA was extracted for the methylation profiling of the SR-BI promoter. SR-BI regulation was studied by exposing ECA and ECV to differential oxygen concentrations or shear stress. Our results show elevated SR-BI expression and protein abundance in ECA compared to ECV in situ and in vitro. Immunohistochemistry demonstrated that SR-BI is mainly expressed on the apical side of placental endothelial cells in situ, allowing interaction with mature HDL circulating in the fetal blood. This was functionally linked to a higher increase of selective cholesterol ester uptake from fetal HDL in ECA than in ECV, and resulted in increased cholesterol availability in ECA. SR-BI expression on ECV tended to decrease with shear stress, which, together with heterogeneous immunostaining, suggests that SR-BI expression is locally regulated in the placental vasculature. In addition, hypomethylation of several CpG sites within the SR-BI promoter region might contribute to differential expression of SR-BI between chorionic arteries and veins. Therefore, SR-BI contributes to a local cholesterol homeostasis in ECA and ECV of the human feto-placental vasculature.
Building resilience in survivors of sexual exploitation: the role of children in activities implemented by NGOs in Uganda

ABSTRACT Children are increasingly affected by sexual exploitation (SEC), and the subsequent hardships arising out threaten their lives. Resilience is the process of adapting well in the face of trauma or other significant sources of stress. Past literature discusses various child participatory methods but has not explored the voices and role of children as agents of change among their peers to yield adaptation and resilience. The study aimed to examine the role children play in their successful recovery and that of other child survivors. This study adopted descriptive research design, using qualitative methods to collect data from NGO staff and child survivors. NGOs adopted different levels of survivor participation from various NGO rehabilitation centres. There was evidence of survivors’ involvement and strength. Survivors’ participation as a complementary strategy in building resilience among survivors should be promoted by NGOs. Staff need to be trained to work with survivors to improve resilience of survivors of SEC.
Analytical framework for integrating climate change mitigation and adaptation in local urban planning policy

Climate change is a multidimensional observable fact and is regarded as one of the greatest challenge human societies is facing in the 21 st century. Debates on climate change advocate that urban areas not only contribute to climate change by emitting huge amounts of carbon-dioxide gas into the atmosphere, but also play a vital role in addressing climate change. This research investigates whether local urban planning policies in master plans target climate change mitigation and adaptation. Accordingly, this research undertook a qualitative content analysis of the policy framework of master plans that are involved in the sample and developed climate change mitigation indexes for all the sampled master plans by assessing urban policies against climate change mitigation evaluation protocols. This research significantly contributes to the field of urban planning and public policy by developing empirical evidence that analyzes the relationship between urban planning policies and climate change mitigation and adaptation. This research supports the use of master plans as an effective tool in mitigating and adapting to climate change and has an implication for mainstreaming climate change mitigation and adaptation in urban planning.
Non-Standard Employment and Unemployment during the COVID-19 Crisis: Economic and Health Findings from a Six-Country Survey Study

The COVID-19 crisis is a global event that has created and amplified social inequalities, including an already existing and steadily increasing problem of employment and income insecurity and erosion of workplace rights, affecting workers globally. The aim of this exploratory study was to review employment-related determinants of health and health protection during the pandemic, or more specifically, to examine several links between non-standard employment, unemployment, economic, health, and safety outcomes during the COVID-19 pandemic in Sweden, Belgium, Spain, Canada, the United States, and Chile, based on an online survey conducted from November 2020 to June 2021. The study focused on both non-standard workers and unemployed workers and examined worker outcomes in the context of current type and duration of employment arrangements, as well as employment transitions triggered by the COVID-19 crisis. The results suggest that COVID-19-related changes in non-standard worker employment arrangements, or unemployment, are related to changes in work hours, income, and benefits, as well as the self-reported prevalence of suffering from severe to extreme anxiety or depression. The results also suggest a link between worker type, duration of employment arrangements, or unemployment, and the ability to cover regular expenses during the pandemic. Additionally, the findings indicate that the type and duration of employment arrangements are related to the provision of personal protective equipment or other COVID-19 protection measures. This study provides additional evidence that workers in non-standard employment and the unemployed have experienced numerous and complex adverse effects of the pandemic and require additional protection through tailored pandemic responses and recovery strategies.