Miracle-dz/UniFAR-FTUs huggingface dataset:
Enhancement of zero-field skyrmion density in [Pt/Co/Fe/Ir]2 multilayers at room temperature by the first-order reversal curve

Magnetic skyrmions are novel topological spin textures on the nanoscale, and significant efforts have been taken to improve their zero-field density at room temperature (RT). In this work, we reported an approach of improving zero-field skyrmion density in [Pt/Co/Fe/Ir]2 multilayers at RT by using the first-order reversal curve (FORC) technique to obtain information on the irreversible or reversible behaviors in the magnetization switching process. It was found from the FORC diagram that the magnetization reversal mechanism can be characterized into three stages: (1) reversible labyrinth stripe domains expanding or shrinking stage; (2) irreversible stripe domains fracturing stage; and (3) irreversible skyrmion annihilation stage. Furthermore, the zero-field skyrmion density can be highly improved by choosing reversal fields from the irreversible stripe domains fracturing stage. The highest skyrmion density was approached according to the maximum FORC distribution ρ. Our results have established the FORC measurement as a valuable tool for investigating magnetic multilayers of high skyrmion densities.
Calculation of Industrial Power Systems Containing Induction Motors

The current paper proposes two methods and algorithms for determining the operating regimes of industrial electrical networks which include induction motors. The two methods presented are based on specific principles for calculating electrical networks: Newton-Raphson and Backward-Forward for iteratively determining currents and voltages. The particularity of this paper is how the driven load influences the determination of the motors operating regimes. For the industrial machines driven by motors we take into account the characteristic of the resistant torque depending on speed. In this way, at the electrical busbars to which motors are connected, the active and the reactive power absorbed are calculated as a function of voltage as opposed to a regular consumer busbar. The algorithms for the two methods are presented. Finally, a numerical study for a test network is realized and the convergence is analyzed.
CaKuTa: Combining Information Value and Temporal Context in a Graph Based Recommender

We present a recommender system which uses a graph based representation to relate items in a system with heterogeneous attributes. In assessing strength of relations between items we combine rarity of common properties with collaborative data on item popularity, with optional inclusion of a random term to introduce diversity in recommendations. For incorporating user preferences into recommendation, our system allows tuning of persistence level while maintaining temporal user context, hence providing a way to prefer or combine ephemeral or persistent preferences of the user.
Fiscal and institutional determinants of long-term government bond yield spreads in the EU countries

In this study we applied a series of panel models to analyse determinants of 10-year government yield spreads between treasury bonds denominated in the national currencies issued by the EU countries and German bunds. Our study covers 23 EU countries (including 9 new Member States) in the period 1990-2012. Contrary to most previous studies on this subject, we found that the strength of the impact of fiscal policy stance on the bond yield spreads depends not only on the type of fiscal policy shock made (fiscal expansion vs. fiscal tightening), but also on its structure (taxed-based or expenditurebased fiscal changes) and on the conditions under which it is made (high vs. low ratio of public debt to GDP ratio, the phase of the economic cycle). Apart from the above-mentioned macroeconomic variables, we also examined an impact of labour and product market regulations on T-bond yields. In this way, we fill an important gap that exists between the voluminous literature on the determinants of long-term interest rates and still limited number of studies on the effects of fiscal policy shocks on the economic growth in the short run. Our results indicate that the cut of fiscal expenditure other than capital one is usually followed by a significant decrease of long-term T-bond yield spreads. This type of expenditure-based fiscal consolidations result in higher drop of spreads than it happens in case of taxed-based fiscal consolidation, especially involving an increase of direct taxes (income taxes or social security contributions). Moreover, in our study we found that strict labour and product market regulations increase long-term T-bond yield spreads in a similar way as high debt to GDP ratio. It suggests that institutional reforms that strengthen competition on these markets should be an important element of reform packages aiming at restoring fiscal policy credibility, and thus decreasing the costs of servicing public debt. JEL classification: C23, E43, E44, E62, F34, G15, H63
Spectrum of Resting 12-Lead Electrocardiographic Findings in Peri- Partum Cardiomyopathy: Report of 100 Consecutive Patients

Electrocardiography (ECG) is an investigative procedure in PPCM screening and monitoring. Although ECG features among PPCM patients have been shown to vary among different ethnicities, this has not been fully described among the Hausa/Fulani ethnicity. In the present study therefore, we described the ECG features of PPCM among Hausa/Fulani ethnic group of Nigeria and we relate same with left ventricular (LV) functions and dimensions. One hundred women who fulfilled the diagnostic criteria for PPCM were evaluated. A standard resting 12-lead ECG and echocardiographic examination were performed on the patients. Data analysis was done using IBM SPSS statistical software (version 22). Mean age of the patients was 27.11 ± 7.83 years and were 98% of the Hausa/Fulani ethnicity. The heart rate (HR) was fast (117.54 ±15.02). Most patients had abnormal ST and T-waves (70% and 83%, respectively). The mean QTc index was 460.97 ±40.69, with 47% of them having prolonged QTc. However, the mean QRS interval was within normal (89.89 ±20.00ms). Although, ejection fraction (EF) showed a significant inverse relationship with the left ventricular internal diameter in diastole (LVIDd) (r = - 0.234, p = 0.021, β-coefficient =-0.013, R2 =0.027), neither of the EF nor the LVIDd showed significant relations with the indices of QRS voltage amplitudes, even though about 82% of the patients had LV dilatation. We conclude that ECG abnormalities are rife among PPCM patients of Hausa/Fulani extraction of Nigeria and may be used alongside other standard protocols to screen and monitor treatment of the patients in this region.
Constructing Fe3O4/Nitrogen-doped Graphene Composites with Rich Pyrrolic Nitrogen for Excellent Supercapacitor Performance

Nitrogen-doped graphene (NG)-supported Fe3O4 nanoparticle composites were prepared via a facile solvothermal and calcination process. The experimental results showed that the Fe3O4 nanoparticles were evenly embedded in the surface of NG without agglomeration and that pyrrolic N was the main N binding form in NG. The as-prepared Fe3O4@NG composites displayed a good specific capacitance of 244.3F/g at a current density of 1A/g. Furthermore, the Fe3O4/NG composites exhibited a low capacitance loss after 1000 cycles.
Ørlandet Iron Age settlement pattern development: Geoarchaeolog y (geochemistr y and soil micromorpholog y) and plant macrofossils

Macrofossil and geoarchaeological data from a variety of contexts and periods at Vik can provide either in situ or proxy information on the human – environment interactions at the site through time. The aim of this paper is to discuss settlement activity patterns through time and space, with special emphasis on agriculture and animal husbandry strategies. The calcar-eous shell bank deposits at the site led to a reduction of the amount of analysed citric soluble phosphate and are apparently also linked to very poor macrofossil preservation. The analysis shows that farming in the pre-Roman Iron Age involved animal management and manuring of fields where naked and hulled barley were cultivated. Stock was kept in the long houses. There are also indications that animals grazed along the shore. In the Roman Iron Age there is no clear evidence of keeping livestock indoors; byre residues were instead found in house-associated waste heaps, where chemical data indicate that dung was left to ferment. Near-house Roman Iron Age waste deposits were also characterised by latrine and fish processing waste, as well as by high temperature artisan residues – fuel ash and iron working materials. Analysis of soil chemical samples indicates an increase and intensification of occupation over time during the pre-Roman Iron Age and the Roman Iron Age. Viking-medieval features were also a remarkable source for monitoring latrine, byre and industrial waste, including the secondary use of water holes and wells that supplied water to both people and animals.
An Effective Approach for Cyberbullying Detection and avoidance

: The rapid growth of social networking is supplementing the progression of cyberbullying activities. Most of the individuals involved in these activities belong to the younger generations, especially teenagers, who in the worst scenario are at more risk of suicidal attempts. This proposes an effective approach to detect cyber bullying messages from social media through a SVM classifier algorithm. This present ranking algorithm to access highest visited link and also provide age verification before access the particular social media. The experiments show effectiveness of our approach.
IFESS 2016 – La Grande Motte, France

Our previous study [1] using a high-cost timedomain (TD) functional near-infrared spectroscopy (fNIRS) prototype instrument showed that unilateral neuromuscular electrical stimulation (NMES) evoked wrist extension movements (50% of maximal tolerated current intensity50%MTI) activated (increase in oxy-hemoglobin-O2Hb and concomitant decrease in deoxy-hemoglobin-HHb) a similar region of the contralateral sensorimotor cortex (SMC) as that of voluntary (VOL) movements. The aim of this study was to use a continuous-wave (CW) relatively low-cost commercial fNIRS instrument to measure contralateral (left) and ipsilateral (right) SMC activation (O2Hb and HHb time course, integral [O2HbINT and HHbINT] and peak levels [O2Hbmax and HHbmin]) during NMES (50%MTI) and VOL wrist extension movements of the right arm in 7 healthy male volunteers. Both NMES and VOL wrist extension movements activated the contralateral (left) and ipsilateral (right) SMC, however, the level of contralateral SMC activation was significantly greater than the ipsilateral SMC. Although the HHb parameters (HHbINT, HHbmin) indicated that there was no significant difference between conditions, the O2Hb parameters (O2HbINT and O2Hbmax) indicated a significantly greater contralateral SMC activation during VOL than NMES. Since HHb is less influenced by skin blood flow changes than O2Hb, we consider that HHb parameters provide a more accurate estimation of task-related cortical activation. In conclusion, these CW-fNIRS findings using HHb parameters indicate that NMES at moderate current intensity (50%MTI) and VOL wrist extension movements elicit a similar contralateral SMC activation, which confirms our previous study using a TD-fNIRS instrument.
Confirmation ofAedes albopictus (Skuse) (Diptera: Culicidae) in Greece

The presence ofAedes albopictus (Skuse) was recently confirmed for the firsttime in Greece. During the last two years, a number of mosquito specimens were sent to our laboratory for identification, with the note that they were abundant and a nuisance in the northwest part of the country. The specimens were seriously damaged and problems were encountered during the process of morphological differentiation between Ae. albopictus and Aedes cretinus Edwards, two related species of the subgenus Stegomyia. Aedes cretinus is endemic in many parts ofGreece. Of the morphological characters that differentiate Ae. albopictus from Ae. cretinus, the only one visible in the specimens was the simple claws of the mid- and foretarsomeres, characterising Ae. albopictus. Molecular methods of DNA amplification for the nuclear internal transcribed spacer gene (ITS2) were applied to the specimens under investigation. The consequent DNA sequence confirmed that these specimens were Ae. albopictus. The findings of the present study are ofparticular interest due to the importance ofthis mosquito species for public health.
FURTHER DEVELOPMENTS ON THE CFD FLOW ANALYSIS INSIDE THE VOLUMATIC SPACER

In recent years, allergic diseases, particularly asthma, have been acquiring an increasing importance in the developed countries, due to the rising of its prevalence and morbidity and the economic burden associated. In the preventive and urgent treatment of asthma, the oral pharmacological therapeutics assumes a major role. Therefore, this paper will report another step further to the research been undertaken at the University of Minho, to understand the behaviour of drug flow inside a spacer device, combined with pressurized metered-dose inhalers (or pMDIs), based on the use of Computational Fluid Dynamics (CFD) tools to study multiphase flows inside a Volumatic® spacer device. This paper will present the two respiratory cycles used in the simulations. It will also report the analysis of the obtained results with the Volumatic® spacer using two different grid types (TGrid and Cooper). With the obtained conclusions, it will be identified some new geometry possibilities for spacer devices (in terms of valve and body). Future work will be addressed to the study of these spacer geometry modifications.
An Analysis of the Current State of the Consumer Credit Reporting System in China

Abstract The Chinese Social Credit System (SCS), known as the first national digitally-implemented credit rating system, consists of two parallel arms: a government-run and a commercial one. The government-run arm of the SCS, especially efforts to blacklist and redlist individuals and organizations, has attracted significant attention worldwide. In contrast, the commercial part has been less often in the public spotlight except for discussions about Zhima Credit. The commercial arm of the SCS, also referred to as the Consumer Credit Reporting System (CCRS), has been under development for about two decades and took a major step forward in 2015 when 8 companies were granted permission to implement pilot consumer credit reporting programs. This development fundamentally increased the reach and impact of the SCS due to these companies’ sizable customer base and access to vast troves of consumer-related information. In this paper, we first map the Chinese CCRS to understand the actors in the credit reporting ecosystem. Then, we study 13 consumer credit reporting companies to examine how they collect and use personal information. Based on the findings, we discuss the relationship between the CCRS and the SCS including the changes in the power relationships between the government, consumer credit reporting companies and Chinese citizens.
Tissue-specific alternative splicing and expression of ATP1B2 gene

The Na + -K + -ATPase is an essential transport enzyme expressed in all animal tissues, where it generates ion gradients to maintain membrane potential and drive the transport of other solutes. It also balances metabolism and body temperature. In this study, the characterization of three novel bovine ATP1B2 splice variants, designated as ATP1B2-AS1, ATP1B2-AS2, and ATP1B2-AS3, is discussed. All three novel splice isoforms were derived from a complete transcript (ATP1B2-complete) by alternative splicing. The pattern of splicing to produce the ATP1B2-AS1 and ATP1B2-AS2 isoforms was intron retention; these isoforms were found in liver, kidney, muscle and breast tissues. For the ATP1B2-AS3 isoform, splicing was by exon inclusion and this isoform was only found in muscle tissue. As demonstrated by real-time polymerase chain reaction, the isoforms were all expressed at significantly lower levels than the complete ATP1B2 gene transcript in all the tissues studied. After heat-stress, the expression levels of the different transcripts were lower in different tissues; however, the expression of the ATP1B2-complete transcript increased in heart and lung tissues. The results of this research provide some useful information for further studies into the function of the bovine ATP1B2 gene. Alternative splicing (AS) is recognized as the major contributor to protein diversity from limited gene pool. ATP1B2-AS2 was the splice of intron retention found from ATP1B2 in liver, kidney, muscle and breast tissues. In the study, ATP1B2-AS2 showed that many of the amino acid residues were in an unfavorable energy environment. It is interesting to speculate that this may be the perfect transcript to respond to heat-stress. So, AS may become the appropriate pathway to tackle heat-stress and reduce the economic losses in cows. Key words: ATP1B2 gene, alternative splicing, alternative splicing mechanism.
Self-Processing Private Sensor Data via Garbled Encryption

Abstract We introduce garbled encryption, a relaxation of secret-key multi-input functional encryption (MiFE) where a function key can be used to jointly compute upon only a particular subset of all possible tuples of ciphertexts. We construct garbled encryption for general functionalities based on one-way functions. We show that garbled encryption can be used to build a self-processing private sensor data system where after a one-time trusted setup phase, sensors deployed in the field can periodically broadcast encrypted readings of private data that can be computed upon by anyone holding function keys to learn processed output, without any interaction. Such a system can be used to periodically check, e.g., whether a cluster of servers are in an “alarm” state. We implement our garbled encryption scheme and find that it performs quite well, with function evaluations in the microseconds. The performance of our scheme was tested on a standard commodity laptop.
Simulating Offender Mobility: Modeling Activity Nodes from Large-Scale Human Activity Data

In recent years, simulation techniques have been applied to investigate the spatiotemporal dynamics of crime. Researchers have instantiated mobile offenders in agent-based simulations for theory testing, experimenting with crime prevention strategies, and exploring crime prediction techniques, despite facing challenges due to the complex dynamics of crime and the lack of detailed information about offender mobility. This paper presents a simulation model to explore offender mobility, focusing on the interplay between the agent's awareness space and activity nodes. The simulation generates patterns of individual mobility aiming to cumulatively match crime patterns. To instantiate a realistic urban environment, we use open data to simulate the urban structure, location-based social networks data to represent activity nodes as a proxy for human activity, and taxi trip data as a proxy for human movement between regions of the city. We analyze and systematically compare 35 different mobility strategies and demonstrate the benefits of using large-scale human activity data to simulate offender mobility. The strategies combining taxi trip data or historic crime data with popular activity nodes perform best compared to other strategies, especially for robbery. Our approach provides a basis for building agent-based crime simulations that infer offender mobility in urban areas from real-world data.
Ontology-Based Support for Hazard and Operability Studies

Received: 23 December 2019 Accepted: 26 May 2020 Ontologies have been used in safety engineering for the representation of knowledge in the form of concepts, facts, and procedures. In this work, an ontology for Hazard and Operability (HAZOP), risk assessment, and related process and plant concepts, is proposed. It is intended to support participants during HAZOP studies. The ontology is designed based on competency questions which can be answered using ontology queries. The developed ontology is applied within a case study to provide knowledge to fill a HAZOP worksheet, including the risk assessment, of a gasoline storage tank system. The results demonstrate that the ontology is well-suited to answer the formulated competency questions correctly. Additionally, metrics have been used to assess the quality of the ontology and to be able to compare ontologies on a quantitative basis. Within future research, the proposed ontology could be enhanced and integrated with an upper ontology.
SPINACH FERREDOXIN REDUCTION BY MEMBRANE‐BOUND CHLOROPHYLL TRIPLET STATE VIA A DIQUAT MEDIATOR

Abstract Laser flash photolysis experiments have shown that the diquat analog containing a propylene bridge (PDQ2+), when electrostatically bound to negatively‐charged vesicles containing chlorophyll, is able to mediate the rapid reduction (k= 1.1 × 105 s‐1) of spinach ferredoxin via electron transfer quenching of triplet state chlorophyll. The kinetics of formation and decay of reduced ferredoxin are consistent with a mechanism involving complex formation between oxidized ferredoxin and vesicle‐bound PDQ2+. Under optimal conditions, approximately 15% of the quenched triplets yield reduced ferredoxin. This process is a model for soluble ferredoxin reduction which occurs in green plant photosystem I, and results in an appreciable storage of electromagnetic energy in the reaction products.
Fast and Efficient Container Startup at the Edge via Dependency Scheduling

Containers are becoming the canonical way of deploying compute tasks at the edge. Unfortunately, container startup latency and overhead remain high, limiting responsiveness and resource efﬁciency of edge deployments. This latency comes mostly from fetching container dependencies including system libraries, tools, conﬁguration ﬁles, and data ﬁles. To address this, we propose that schedulers in container or-chestrators take into account a task’s dependencies. Hence, in dependency scheduling , the scheduler tries to place a task at a node that has the maximum number of the task’s dependencies stored locally. We implement dependency scheduling within Kubernetes and evaluate it through extensive experiments and measurement-driven simulations. We show that, for typical scenarios, dependency scheduling improves task startup latency by 1.4-2.3x relative to current dependency-agnostic schedulers. Our implementation of dependency scheduling has been adopted into the mainline Kubernetes codebase.
The Gate Hall of Lorsch – Comprehensive Assessment Methods to calibrate Simulation Models and adapt Conservation Strategies

The Torhalle (“Gate Hall”) of Lorsch, also called K ing’s Hall, is one of the best preserved examples of Karoling architecture in Germ any, dating back to 760 A.C. The hall is located on the first floor above an ent ra ce gate to a monastery and is believed to have been used as a church originally. It features valuable Romanic wall paintings. In the 1980ies thorough investigations w ere conducted on the building and its indoor environment which shows high relativ e humidity all year round. In 1991 a controlled ventilation system was introduced that promised to lower RH significantly. Already in 1992 it was turned off by a sceptical conservator. Now the building faces the same problems as before and new research is taking place, looking at collected climate data and past experien ce. The aim is to develop a new climatisation strategy for the Gatehall. For this p ur ose the whole building simulation tool WUFI Plus is applied, to assess the us of different HVAC systems for the specific building and location at Lorsch an d also to research the possible effects on indoor environmental fluctuations that m ight be harmful to the ancient wallpaintings. This research is part of the Europea n project Climate for Culture on the effects of climate change on cultural heritage.