Miracle-dz/UniFAR-FTUs huggingface dataset:
Strength and Latency of the HP-SAP Closed Loop Variability Interactions in Subjects Prone to Develop Postural Syncope*

The coupling and latency between heart period (HP) and systolic arterial pressure (SAP) variability can be investigated along the two arms of the HP-SAP closed loop, namely along the baroreflex feedback from SAP to HP, and along the feedforward pathway from HP to SAP. This study investigates the HP-SAP closed loop variability interactions through cross-correlation function (CCF). Coupling strength and delay between HP and SAP variability series were monitored in 13 subjects prone to develop orthostatic syncope (SYNC, 28±9 yrs, 5 males) and in 13 subjects with no history of postural syncope (noSYNC, age: 27±8 yrs, 5 males). Analysis was carried out at rest in supine position (REST) and during head-up tilt (TILT) at 60 degrees. The null hypothesis of HP-SAP uncoupling was tested through a surrogate analysis associating the HP series of a subject with a SAP sequence of a different one. Results showed that during TILT the coupling strength increased along the baroreflex and latency augmented along the mechanical feedforward pathway exclusively in noSYNC subjects. Finally, closed loop HP-SAP interactions were detected in about one third of subjects and the situation of full uncoupling was rarely found. CCF analysis was found to be a straightforward and easily applicable method to investigate HP-SAP control deserving a direct comparison with more sophisticated signal processing tools assessing causality.
Monitoring and Prediction of Mood in Elderly People during Daily Life Activities

We present an intelligent wearable system to monitor and predict mood states of elderly people during their daily life activities. Our system is composed of a wristband to record different physiological activities together with a mobile app for ecological momentary assessment (EMA). Machine learning is used to train a classifier to automatically predict different mood states based on the smart band only. Our approach shows promising results on mood accuracy and provides results comparable with the state of the art in the specific detection of happiness and activeness.
Effective and Efficient Community Search Over Large Directed Graphs

Communities are prevalent in social networks, knowledge graphs, and biological networks. Recently, the topic of community search (CS), extracting a dense subgraph containing a query vertex $q$q from a graph, has received great attention. However, existing CS solutions are designed for undirected graphs, and overlook directions of edges which potentially lose useful information carried on directions. In many applications (e.g., Twitter), users’ relationships are often modeled as directed graphs (e.g., if a user $a$a follows another user $b$b, then there is an edge from $a$a to $b$b). In this paper, we study the problem of CS on directed graph. Given a vertex $q$q of a graph $G$G, we aim to find a densely connected subgraph containing $q$q from $G$G, in which vertices have strong interactions and high similarities, by using the minimum in/out-degrees metric. We first develop a baseline algorithm based on the concept of D-core. We further propose three index structures and corresponding query algorithms. Our experimental results on seven real graphs show that our solutions are very effective and efficient. For example, on a graph with over 1 billion of edges, we only need around 40mins to index it and 1$\sim$∼2sec to answer a query.
Towards Safe Infrared Nerve Stimulation: A Systematic Experimental Approach

Neural activation by infrared nerve stimulation (INS) gains growing interest as a potential alternative to conventional electric nerve stimulation, since unambiguous advantages like contact-free operation, enhanced spatial selectivity and lack of (electrical) stimulation artifacts are promising for both future electrophysiological research and clinical application. For the systematic investigation of laser nerve activation, we recently introduced a novel experimental approach. Comprising a defined focused beam profile, it enables remote controlled, contact-free pulsed laser stimulation of the rat sciatic nerve, simultaneous to high-speed temperature measurement in vivo. Up to now, successful neural activation with single laser pulses (2 – 6 mJ) was observed in all performed experiments, however, it strongly depended on the particular nerve location. Hence, we depict the investigation of spatial dependency of the nerve response and identify ‘regions of excitability’ on the nerve surface, that are highly susceptible to INS. By means of thermal imaging, we simultaneously monitored the nerve surface temperature, where we observed progressing temperature build-up during single pulse stimulation with repetition rates above 4 Hz. In this work, we present current results of our ongoing research.
Robust Beat-to-Beat Interval from Wearable PPG using RLS and SSA

Ambulatory Photoplethysmogram (PPG) is a more user-friendly choice for continuous cardiac monitoring as compared to Electrocardiogram (ECG). However, wearable PPG is often prone to motion artefacts. In this paper, we propose a novel pipeline for motion-resistant beat-to-beat interval extraction from noisy PPG. Firstly, the effects of motion artefacts are minimized by using Adaptive Recursive-Least-Square (RLS) Filtering and Singular Spectrum Analysis (SSA). Next, the signal peaks are identified and their locations are corrected by weighted local interpolation. Finally, outlier peak-to-peak intervals are marked as incorrigible. Experimental validation on the training dataset of IEEE Signal Processing Cup 2015 reveals that the proposed method achieves 1.68% mean peak detection error rate and 11.32 milliseconds mean absolute error of detected beat-to-beat intervals. The metric values outperform those obtained by the state-of-the-art techniques by at least 12.58 and 5.74 times respectively.
Computational simulation of electromagnetic fields on human targets for magnetic targeting applications

In the last few years, the use of nanoparticles for therapeutic applications has attracted the interest of many scientists, who are looking for effective methods to target nanoparticles linked to drugs directly to the diseased organs. Among them, magnetic targeting consists of magnetic systems (magnets or coils) which can impress high gradient magnetic fields and then magnetic forces on the magnetic nanoparticles. Despite some studies have reported an effective improvement in drug delivery by using this technique, there is still a paucity of studies able to quantify and explain the experimental results. In this scenario, "in silico" models allow to analyze and compare different magnetic targeting systems in their ability to generate the required magnetic field gradient for specific human targets.In this paper we then evaluated, by means of computational electromagnetics techniques, the attitude of various ad-hoc designed magnetic systems in targeting the heart tissues of differently aged human anatomical models
Inquiry on the sun exposition in beach workers

Objective: To investigate the habits of photoexposition and photoprotection among beach workers in Natal-RN, Brazil. Methods: It is a descriptive observational epidemiological study of transverse type, with random sample consisting in 102 workers of Ponta Negra Beach, evaluated through a questionnaire of the Ministry of Health (DAS UV). Results: It was noted that 56% (n=57) of workers remain submitted to sun exposure for an average of 6 hours or more per day. It was found that approximately 24% (n=24) of respondents do not use sun protection. Workers showed a low educational level, since 55% (n=56) had only attended elementary school, whether graduated or not, and average monthly income was below two minimum wages for 69.96% of volunteers. Conclusion: This assessment revealed that workers of Ponta Negra Beach, Natal-RN, are highly exposed to ultraviolet radiation during their professional activities, without proper photoprotection of skin.
Characteristics of Holocene Temperature Change in China

Based on the researches on temperature change in China in the Holocene,the characteristics of tem-perature variability were displayed in this report.The temperature variation in the Holocene could be divided in-to three stages: ascending in the early Holocene with great fluctuations,Megathermal in the mid-Holocene,and descending in the late Holocene.The temperature in the warmest period of 8.0-6.2 kaBP was 1℃ higher than at present.Ten cold intervals which occurred in 11.0 kaBP,9.8 kaBP,9.2 kaBP,8.9 kaBP,8.2 kaBP,6.2 kaBP,4.0 kaBP,2.8 kaBP,1.5 kaBP and 0.4 kaBP were consistent with the eight cold events in the North Atlantic domain.It seems that the most significant cold-events appeared in 4.0 kaBP and 0.4 kaBP.Warm events occurred around 8.6 kaBP,4.7 kaBP and 3.5 kaBP.The significant periodicities of temperature variation in the Holocene were 1000a and 700a.
Contribution of Climate Warming to Rice Yield in Heilongjiang Province

Studying impact of the happened climate warming to the crop yield is an effective approach for understanding the impacts of climate change on agriculture. In this paper, a new method is put forward to calculate climate yield with a climate trend, which may overcome the disadvantage of traditional method. In the new method, a referenced period that satisfies the hypothesis of traditional method is selected to construct a function on the main meteorological factor and climate influence coefficient by regression. This function can be used to calculate climate influence coefficient of other years. Rice yield in Heilongjiang province is mainly restricted by temperature. A case study on contribution of climate change to rice yield change from 1952 to 2000 is made in this region. The result shows that, although non-climatic forces have likely dominated the trends in per unit area rice yield in Heilongjiang province, the impact of climate warming on rice becomes more and more prominent during the past 20 years. The real rice yield per unit area in the 1980s is 30.6% higher than that in the 1970s. The increased yield due to climate warming is 12.8%-16.1% of the real increased yield. The real rice yield per unit area in the 1990s is 42.7% higher than that in the 1980s. The increased yield due to climate warming is 23.2%-28.8% of the real increased yield.
Rubber Plantations in Xishuangbanna: Remote Sensing Identification and Digital Mapping

Rubber plantations are the dominant artificial landscape across Xishuangbanna. Extraction and dynamic monitoring of rubber plantations is important to the region's economic development and ecological protection. Based on MODIS-NDVI data we analyzed phenological characteristics of vegetation cover type and determined the temporal window for rubber forest detection. According to spectral differences between rubber forests at different growth stages we used object-oriented classification to discriminate spatial patterns with TM imagery. We found that the optimum temporal window for rubber detection was from January to February or from early June to late October. Using times series NDVI analysis we found that mature rubber forest has obvious differences compared with other land cover types and that young forest rubber was often confused with fallow farmland and tea garden. The NDVI characteristic of rubber forests is not the sole classification feature. Based on GPS and visual sampling total classification accuracy was 85.20%, about 5.20% higher than the decision tree method based on pixel classification. The accuracy of young rubber forest (10 years old) was 92.50% and mature rubber forest (10 years old) was 76.42%, a ratio of 1.04[∶]1. Remote sensing results were very close to the real condition, namely the area of private rubber plantation more than state-owned plantation. We propose a new method for the validation and improvement of rubber classification accuracy. Change analysis showed that the extraction method of mature rubber forest was more credible than for young rubber forest; mature rubber forest seldom transformed into other land use types. Rubber forest extraction and dynamic monitoring is important for rubber yield estimation, spatial distribution, environmental protection and local government decision-making. This is an effective method for monitoring rubber plantations dynamically and can be extended to other perennial vegetation extraction.
A new optimal allocation sampling design to improve estimates and precision levels of discards from two different Fishery Units of Spanish trawlers in northeast Atlantic waters (ICES subareas VIIc,j,k)

The present report discusses a new onboard sampling design for the Spanish trawlers in northeast Atlantic waters ‐International Council for the Exploration of the Sea (ICES) subareas VIIc,j,k‐. This sampling design comprises three stages: i) number of vessels and trips per vessel to be sampled; ii) the minimum number of sampled hauls; and iii) a temporal distribution of those sampled hauls throughout the fishing trip to balance hauls sampling along the fishing trip. As a result, an optimal allocation sampling is suggested, comprising at least one vessel and one trip per vessel to be sampled monthly, between 30 to 50 sampled hauls within that fishing trip, and a time-division for hauls during the fishing trip, containing 8-15 sampled hauls at the beginning, middle and end of the trip.
Interdecadal Variability in Large and Small Warm Pools in Western Pacific and Their Association with Rainfall Anomalies

Abstract This study investigated interdecadal variability of June–October (JJASO) the large and small warm pools in western Pacific and their association with rainfall anomalies using station and reanalysis data from 1958 to 2008. The results indicated that the large and small warm pools in western Pacific showed an interdecadal shift around 1986. The large warm pool years over western Pacific were found after 1986, whereas the small warm pool years were often seen throughout the periods before 1986. The analysis results also showed that there were obvious interdecadal variability in JJASO rainfall in Southeast China and warm pool in western Pacific. During 1958–1985 (small warm pool years), the decrease in rainfall was associated with tropospheric moisture divergence and sinking motion over Southeast China and warm pool in western Pacific. However, during 1986–2008 (large warm pool years), the increase in rainfall was associated with tropospheric moisture convergence and ascending motion. Further analysis showed that large warm pool contributed to the increase in surface latent heat fluxes over warm pool in the western Pacific. Thus, there was an increase in the amount of water vapor over Southeast China and warm pool in western Pacific, which contributed to increased rainfall in these regions.
PREDICTING HOSPITAL LENGTH OF STAY USING REGRESSION MODELS: APPLICATION TO EMERGENCY DEPARTMENT

Increasing healthcare costs motivate the search for ways to increase care efficiency. In this paper, we present a novel methodological framework based on predictive data mining approach to estimate the LOS (Length Of Stay) in an emergency department (ED). We use supervised learning that the goal is to build concise models in terms of predictor features. The aim is to identify the factors (variables) characterizing the LOS in EDs in order to propose models to predict the LOS. We identified two models based on linear regression. These models are validated and were successfully applied to the classification and prediction of the LOS in the pediatric emergency department (PED) at Lille regional hospital centre, France.
On urbanization process and spatial expansion in the urban fringe of Beijing:A case study of Daxing District

The analysis on spatial expansion of the urban fringe lays the foundation for the research on urban spatial structure and formation evolution in the future.Based on the data of urban land use in Daxing District,extracted from TM remote sensing images in 1994,2001 and 2006,this article conducts an analysis on the temporal and spatial characteristics of urban land use in the urbanization.process of the past ten years urbanization,through studying the intensity index,gradient index and spatial expansion pattern and other factors involved in the expansion of the built-up areas,and provides basis for identifying the orientation of urban land use in the urban fringe and improving the efficiency of land use and urban and rural construction.The result shows that urbanization of Daxing primarily concentrated on the later study period,with ever increasing in intensity of expansion of the urban land use;construcion lands are distributed in the gradient of urban expansion in an uneven manner,with two stable growth areas,generally in highly urbanized area and rural area whose gradient indexes are above 0.8 and below 0.2 respectively.The increasing expansion of the central urban district and its area has resulted in an evident trend that the built-up areas are concentrated on high index sect:ons,with large-scale increase in built-up areas in low index sections due to the rapid development of small towns in rural areas.The whole district was separated into three levels by the urbanization gradient,i.e.,the high speed-urbanization belt,rapid-urbanization belt and slow-urbanization belt.The high-speed-urbanization belt,close to the central district,is in the dominant position,but is declining owing to the restriction of the land supply.Rapid-urbanization belt expands mainly along an axis which has exerted stable impact on the urbanization of Daxing.With the rapid development of urban economy,the separated pattern is becoming a main pattern of spatial expansion of the urban fringe,with an increasingly dramatic influence on the spatial expansion,leading to rapid increase of the number of constructed areas.
Glacier Retreating Dramatically on the Mt.Nyainqêntanglha During the Last 40 Years

During the expeditions to Mt.Nyainqentanglha in the summer of 1999 and 2007,glacier termini had been surveyed using GPS technology for five glaciers around the mount.Comparing the terminus positions surveyed by the two GPS with those surveyed in 1970 reveal that five glaciers have retreated since 1970.The retreat rate of glacier termini is around 10.0 m·a-1 for the Lanong and Zhadang Glaciers in the northern slopes of the mount and the Panu Glacier in the southern slope during 1970-2007.However,retreat of the Xibu Glacier is dramatic with a rate of 38.9 m·a-1,while a small high-elevation glacier(5O270C0049) in the Panu basin has a low retreat rate of 4.8 m·a-1.A stream was observed in the 1970′s firn basin of the Panu Glacier,indicating that not only the glacier termini are retreating dramatically but also the ablation areas are expanding around the mount.
Study on the changing laws of wind-blown mass affected by wind speed

The field experiment was conducted on the cultivated soil, sand and immature soil by using field wind tunnel. The results show: that the relationship between wind erosion quantity and wind velocity is fitled well in exponential functions for the cultivated soil, and in power functions for the sand and immature soil. There is a negative correlation between the quantity of wind erosion and the topsoil (30 cm) water content for the cultivated soil, but there is no evident dependency relation between the quantity of wind erosion and water content for sand. A large amount of fine particles in the soil is lost during the wind erosion, which is the main causation of siol particle coarsening.
Carlin and Carlin-like Gold Deposits in Western Qinling Mountains and Their Metallogenic Time, Tectonic Setting and Model

The Western Qinling Mountains is the largest but one metallogenic province of Carlin and Carlin-like gold deposits in the world. Inboard a continental collision orogen, the Western Qinling Carlin and Carlin-like gold province has different geological setting from Nevada and adjacent areas in western United States, the first largest worldwide Carlin and Carlin-like gold province, which is developed in a basin-range province behind an active marginal orogen. The Carlin and Carlin-like gold deposits in the Western Qinling Mountains are mainly hosted in Hercynian-Indosinian (from Devonian to Triassic) tectonostratigraphic unit developed in a foreland fold-thrust belt south of the Shangzhou-Danfeng Early Paleozoic geosuture. The country rocks are major of carbonaceous fine clastic-chemical sediments, including calcareous sandstones, silty carbonates, shales and cherts, deposited in lagoon-shallow sea environments, although a part of the country rocks was previously suggested as turbidite. Geochemical signature of Au-As-Sb-Hg-Ag((Ba, Te, Pb-Zn), poor in Tl, characterizes most individual deposits. Sb, Hg, Ag, Pb-Zn and barite, and occasionally uranium, can be recovered as by-products. With metallogenic temperature of 160-300 ℃ , fluid salinity mainly of 4%-10% (NaCleq) , pressure of 5-50 MPa and depth of 0. 5-5 km, the gold deposits in Western Qinling Mountains are medium- or low-temperature mesozonal to epizonal deposits, consisting with those in Nevada. Ore-fluids are major of metamorphic and meteoric, despite magmatic fluid cannot be ruled out. High content of C2H6 shows that organic fluids contributed to gold metallogenesis. Histogram of isotope ages shows that metallogeny occurred in the period of 220-100 Ma, with a peak around 170 Ma. Metallogenic geodynamic setting was the transition from collisional compression to extension; and the CMF (collisional orogeny, metallogeny and fluid flow) model can be used to interpret the Carlin and Carlin-like gold mineralization in Western Qinling Mountains. During the collision between the South and North China continents, imbricate north-dipping underthrusting or intracontinental subduction occurred along regional faults such as Longmenshan fault, Ruo'ergai-Wenxian fault, Maqu-Mianxian-Lueyang fault, Bailongjiang fault, and Fengxian-Zhen'an fault. This caused intense crustal shortening, thickening and uplifting, as well as the followed slab delamination in Western Qinling Mountains. Metamorphic devolatilization and partial melting of the underthrusted slabs led to the generation of ore-fluids and related melts. Upward migration of ore-fluids and related melts into favorable structural loci must result in formation of the Carlin and Carlin-like gold systems as well as the orogenic-type gold lodes. Additionally, a huge orogenic-type gold province is stipulated to be beneath the Carlin and Carlin-like gold province in Western Qinling Mountains.
Regional Disparity in China and Its Evolution( 2000-2012) ——Re-examination Based on DLI

Based on China's annual regional Development and Life Index( DLI) data from 2000 to 2012 published by the Statistical Science Institute of China's National Bureau of Statistics,Dagum's Gini Coefficient and its decomposition method are used in the present empirical study on the regional disparity in China. Three conclusions are therefore drawn. First,DLI's geographical distribution visually demonstrates that China's development is characterized by significant spatial inequality,showing the gradient feature of being high in the east and low in the west,with only eleven provinces achieving a high level of DLI and high per capita GDP. Second,the overall disparity of China's development is narrowing and the disparity between regions is the major source of overall inequality; regional disparity measured by GDP capital as the main indicator is larger than by DLI. Third,in the course of realizing the win-win optimum development mode between coordinated development and economic growth,the focus should be on the solution to the overall disparity in technological innovations and the regional disparity in the improvement of the people's livelihood.