Miracle-dz/UniFAR-FTUs huggingface dataset:
Cross- Scenario Person Re-identification

Person Reid is a challenging task for two factors, first one is background interference, such as changes in light, weather, posture, and camera position. Second is domain adaptive capacity, such as model train by market1501 achieve the same performance on Duke dataset. To solve the above problems, we come up with adopt human semantic to remove clutter from unwanted background information, is naturally a better alternative compare with bounding box, we adopt Local Regions Representation to extra the image features, which can preeminently improve the representation of local feature and global feature. Our proposed CSReID integrates human semantic and Local Regions Representation in person re-identification and not need to train on the evaluation dataset can achieve state of the art cross-modal performance.
Spillover Effects between Greece and Cyprus: A DCC Model on the Interdependence of Small Economies

This paper discusses the volatility spillovers between the Greek debt crisis and the Cypriot financial crisis. Cyprus was in the spotlight of financial markets due to significant problems stemming from the banking sector, which were dealt with by EU regulators with a bail-in on bank deposits. The current analysis aims to shed light on the reasons behind implementing this novel approach to bank distress. The study uses a Dynamic Conditional Correlation model on the returns of the stock markets of the two countries, which shows strong spillover effects during the period leading up to the 2013 Cypriot crisis, but a significant decrease of these effects from then on. The results confirm the close interdependence of the Greek and Cypriot economies before 2013 and show that this interdependence was limited from that point onwards. This would indicate that since the risk of contagion to the Eurozone had diminished, regulators could test the bail-in solution in Cyprus in 2015. The current work contributes to the discussion on the interdependence of European economies. The paper’s findings can also be applied to other emerging European economies.
Early solar system aqueous activity: K isotope evidence from Allende

The alkali element K is moderately volatile and fluid mobile; thus, it can be influenced by both primary processes (evaporation and recondensation) in the solar nebula and secondary processes (thermal and aqueous alteration) in the parent body. Since these primary and secondary processes would induce different isotopic fractionations, K isotopes could become a potential tracer to distinguish them. Using recently developed methods with improved precision (0.05‰, 95% confidence interval), we systematically measured the K isotopic compositions and major/trace elemental compositions of chondritic components (18 chondrules, 3 CAIs, 2 matrices, and 5 bulks) in the carbonaceous chondrite fall Allende. Among all the components analyzed in this study, CAIs, which formed initially under high‐temperature conditions in the solar nebula and were dominated by nominally K‐free refractory minerals, have the highest K2O content (average 0.53 wt%) and have K isotope compositions most enriched in heavy isotopes (δ41K: −0.30 to −0.25‰). Such an observation is consistent with previous petrologic studies that show CAIs in Allende have undergone alkali enrichment during metasomatism. In contrast, chondrules contain lower K2O content (0.003–0.17 wt%) and generally lighter K isotope compositions (δ41K: −0.87‰ to −0.24‰). The matrix and bulks are nearly identical in K2O content and K isotope compositions (0.02–0.05 wt%; δ41K: −0.62 to − 0.46‰), which are, as expected, right in the middle of CAIs and chondrules. This strongly indicates that most of the chondritic components of Allende suffered aqueous alteration and their K isotopic compositions are the ramification of Allende parent‐body processing instead of primary nebular signatures. Nevertheless, we propose the small K isotope fractionations observed (< 1‰) among Allende components are likely similar to the overall range of K isotopic fractionation that occurred in nebular environment. Furthermore, the K isotope compositions seen in the components of Allende in this study are consistent with MC‐ICP‐MS analyses of the components in ordinary chondrites, which also show an absence of large (10‰) isotope fractionations. This is not expected as evaporation experiments in nebular conditions suggest there should be large K isotopic fractionations. Nevertheless, possible nebular processes such as chondrules back exchanging with ambient gas when they formed could explain this lack of large K isotopic variation.
Patient-important outcomes reported in clinical studies of pharmacologic treatments for covid-19: A protocol of a meta-epidemiological study

ABSTRACTBackground: The coronavirus disease 19 (covid-19) pandemic has underscored the need to expedite clinical research, which may lead investigators to shift away from measuring patient-important outcomes (PIOs), limiting research applicability. We aim to describe the extent to which randomized controlled trials (RCTs) of covid-19 therapies will determine PIOs. Methods: We will perform a meta-epidemiological study of RCTs that included people at risk for, or with suspected, probable, or confirmed covid-19, examining any pharmacological treatment or blood product aimed at prophylaxis or treatment. We will obtain data from all RCTs identified in a recent published network metanalysis (NMA). To categorize the outcomes according to their importance to patients, we will adapt a previously defined hierarchy: a) mortality, b) quality of life/ functional status/symptoms, c) morbidity, and d) surrogate outcomes. Outcomes within the category a) and b) will be considered critically important to patients, and outcomes within the category c) will be regarded as important. We will use descriptive statistics to assess the proportion of studies that report each category of outcomes. We will perform univariable and multivariable analysis to explore associations between trial characteristics and the likelihood of reporting PIOs. Discussion: The findings from this meta-epidemiological study will help health care professionals and researchers understand if the current covid-19 trials are effectively assessing and reporting the outcomes that are important to patients. If a deficiency in capturing PIOs is identified, this information may help inform the development of future RCTs in covid-19.
Higher minimum wage, better labour market returns for rural migrants? Evidence from China

Abstract Using data from the 2013 China Household Income Project (CHIP), this study investigates the effects of minimum wages on labour market returns for rural migrants in China and sheds light on the potential underlying mechanisms of these effects. An instrumental variable estimation is used to address the endogeneity problem of minimum wages on labour market returns. Our empirical findings indicate that minimum wages have positive effects on migrants’ wages. Specifically, we observe higher effects for women and migrants who have higher education levels. Regarding the possible mechanisms through which minimum wages influence migrants’ labour market returns, we find that minimum wages tend to increase rural migrants’ working time but have no significant effects on allowances related to work. We could not obtain conclusive results for social insurance due to its potential endogeneity.
CFD Modelling and Calculation of Dynamic Two-Phase Flow in Columns Equipped with Structured Packing

Abstract Corrugated structured packings feature strong preferential flow directions due to their geometry of crossing triangular channels. This leads to good radial spreading, but causes stronger susceptibility to maldistribution of the phases. Detailed CFD calculations reflecting the exact packing structure are only feasible for very small sections of packing. However, effects like large scale maldistribution and instabilities in the flow field can only be modelled, if the hydrodynamics of the entire column are taken into account. In the present study, the macroscopic gas–liquid two-phase flow field of an entire column is modelled and numerically calculated. Both steady-state and dynamic cases are treated for counter-current operating conditions below the loading point. The model is based on the elementary cell model. It is extended to be used on anisotropic porous structures like corrugated structured packings. For the elementary cell model, flow field variables (velocity, phase volume fraction, pressure, and so on) and packing properties (void fraction, momentum exerted by the packing on the fluids, and so on) are averaged over the volume of one elementary cell. An elementary cell is the smallest periodically recurring structure of the porous material. For the gas phase, measurements of the pressure drop are conducted in different directions to model an anisotropic gas flow resistance tensor. The physically homogeneous liquid phase is split up for modelling purposes into two liquid phases, each of them representing film flow along one preferential flow direction. The numerical results are tested against X-ray radiographic measurements on a quasi two-dimensional segment of structured packing.
Relaxation processes in aromatic polyimide

Electrical conduction in non-conjugated insulating polymers such as Kapton(R) films was studied as a function of temperature, T (15–500 K) and electric field F (≤16 kV cm−1). The time dependent isothermal transient currents (ITC) were also studied at different temperatures (15 K<T<500 K). Thermally stimulated discharge current (TSDC) studies were carried out as a function of initial poling conditions. A distinct change in conduction mechanism as a function of T was observed at T≥300 K from DC conductivity, ITC and TSDC measurements. The origin of this behaviour is discussed in terms of transition of dipolar at low T to space charge mechanism at high T which can be attributed to carrier trapping and release of charge carriers from the trap states. The effective barrier energy, Δ, for transport and hopping parameter λ(T) are estimated for Kapton on the basis of these studies. The results obtained for Kapton suggest that, for T<Tg at low or moderate fields, the transient currents are essentially governed by dipolar relaxation mechanisms.
Leadership to defeat COVID-19

Defeating COVID-19 will not happen only via efforts of scientists working on vaccines or new treatments and interventions. Key to winning this battle is to convince citizens to take the needed precautions and to follow scientific advice to stop the spread of the virus and to protect those who are vulnerable to it. Thus, leaders, especially political leaders, play a critical role in coordinating the efforts of individuals who often have private interests to act as they wish, but who expect to benefit from the efforts of others who contribute to the public good. To deal with this unprecedented challenge, I discuss the importance of leadership, particularly charismatic leadership, which is well suited to solving problems in situations of ambiguity and crisis. I also exhort researchers to pay more attention to studying leadership using robust and causally identified designs that can inform policy.
Analysis of Long-Term Variations of Drought Characteristics Using Standardized Precipitation Index over Zambia

This study examines long-term spatial and temporal trends of drought characteristics based on the Standardized Precipitation Index at three different time scales (3, 6, and 12 months) over Zambia from 1981 to 2017. Drought characteristic conditions such as duration, severity, and intensity at monthly, seasonal, and annual levels were analyzed to investigate the drought patterns over Zambia. The results show a significant increase in drought events over the southwestern regions and a decrease over the northeastern regions. It is in this regard that two stations from different locations (southwest and northeast) were analyzed. The results show increasing trends of drought over Sesheke (southwest) and decreasing trends over Kasama (northeast). More drought impacts are felt over southern compared to northern areas, which poses a serious concern to both agriculture and hydrological industries over the drought-prone areas of Southern Zambia. However, the analysis further shows that droughts were more intense, persistent, and severe over the southwest, while moderate droughts were found in some few areas of Northeast Zambia. The Mann–Kendall test trend and slope indicated that both annual and seasonal drought have increased. However, drought increment at an annual level shows a low magnitude as compared to the seasonal level. This suggested the importance of evaluating drought at an interannual and seasonal time scale over Zambia. Specifically, the drought increased determinedly before 2010 and became erratic between 2010 and 2017 with considerable regional variation. Zambia experienced moderate to severe droughts during 1991–1992, 1994–1995, 2006–2005, and 2015–2016, which resulted in serious damages to the environment and society. According to the findings of this study, it is suggested that the implications of drought can be managed by creating strategies and adaptation measures.
Effectiveness and safety of apixaban, low-molecular weight heparin, and warfarin among high-risk subgroups of venous thromboembolism patients with active cancer

Cancer-associated venous thromboembolism (VTE) carries a high risk for recurrent events and major bleeding (MB) which further increases among some high-risk subgroups of patients. This study evaluates recurrent VTE and MB among VTE patients with active cancer within 6 months of initiating apixaban, low-molecular weight heparin (LMWH), or warfarin stratified by cancer type, cancer treatment, and VTE characteristics. Four US commercial insurance claims databases were pooled to identify VTE patients with active cancer (defined as ≥1 claim with cancer diagnosis [any stage] or cancer treatment [chemotherapy, radiation, and cancer-related surgery] within 6 months before to 30 days after VTE diagnosis). Patients who initiated apixaban, LMWH, or warfarin within 30 days following the first VTE event (01SEP2014–31MAR2018) were included. Treatment cohorts were balanced using stabilized inverse probability treatment weighting (IPTW). Cox proportional hazards models were used to estimate hazard ratios of recurrent VTE and MB for each subgroup stratification: metastatic diagnosis, cancer treatment, chemotherapy, upper and lower gastrointestinal (GI) cancer, and VTE event type (PE with or without deep vein thrombosis [DVT] versus DVT only). Statistical significance (P<0.10) of the interaction between the subgroup strata and outcomes were evaluated. A total of 3,393 apixaban, 6,108 LMWH, and 4,585 warfarin patients were identified with a mean follow-up of 105–166 days across cohorts. After IPTW, all patient characteristics were balanced. In the overall population, apixaban had a lower risk of recurrent VTE and MB vs. LMWH. Warfarin had a similar risk of recurrent VTE and MB vs. LMWH. Apixaban had a lower risk of recurrent VTE and a similar risk of MB vs. warfarin (Figure). Analyses stratified by metastatic diagnosis, cancer treatment, chemotherapy, VTE event type, and GI cancer show generally consistent results across the subgroups (most of the p values for interaction >0.10) and with the overall population. There was a significant interaction in cancer treatment strata: apixaban trended towards a lower risk of MB vs. LMWH with or without cancer treatment; however, patients without cancer treatment had a larger difference vs. patients with cancer treatment. Two significant interactions were observed in metastatic diagnosis strata: apixaban and warfarin had a lower risk of recurrent VTE vs. LMWH in patients without a metastatic diagnosis whereas apixaban and warfarin had similar risk of recurrent VTE vs. LMWH in patients with a metastatic diagnosis (Figure). Across these high-risk subgroups of VTE cancer patients, apixaban generally had a lower risk of recurrent VTE and MB vs. LMWH and lower risk of recurrent VTE compared to warfarin. Warfarin patients generally had a similar risk of recurrent VTE and MB vs. LMWH. The findings are generally consistent with the overall population results. Type of funding source: Private company. Main funding source(s): Pfizer Inc. and Britstol-Myers Squibb Company.
Are female CFOs trailblazers or sustainers? Evidence from industry growth prospects in China

ABSTRACT This paper examines the effect of female corporate financial officers (CFOs) on corporate financial policies in industries with different rates of growth. In general, we find that female CFOs in China show more risk aversion and conservatism across a broad set of financial decisions. Furthermore, we document that female CFOs emphasize different corporate financial policies in high-growth versus low-growth industries. We find that female CFOs emphasize restraint in expansion decisions in high-growth industries but attach more weight to efficiency management in low-growth industries. Finally, we find that the conservative characteristics of female CFOs are more beneficial for financial performance in low-growth industries. Our findings enhance understanding of female CFOs’ roles under different growth conditions in emerging markets.
Term position‐based language model for information retrieval

Term position feature is widely and successfully used in IR and Web search engines, to enhance the retrieval effectiveness. This feature is essentially used for two purposes: to capture query terms proximity or to boost the weight of terms appearing in some parts of a document. In this paper, we are interested in this second category. We propose two novel query‐independent techniques based on absolute term positions in a document, whose goal is to boost the weight of terms appearing in the beginning of a document. The first one considers only the earliest occurrence of a term in a document. The second one takes into account all term positions in a document. We formalize each of these two techniques as a document model based on term position, and then we incorporate it into a basic language model (LM). Two smoothing techniques, Dirichlet and Jelinek‐Mercer, are considered in the basic LM. Experiments conducted on three TREC test collections show that our model, especially the version based on all term positions, achieves significant improvements over the baseline LMs, and it also often performs better than two state‐of‐the‐art baseline models, the chronological term rank model and the Markov random field model.
Microsite Preferences and Determinants for Recruitment of Keystone Tree Species in a Tropical Montane Forest of Myanmar

ABSTRACT Successful plant recruitment is crucial for maintaining forest ecosystems, but knowledge of the responses of early life stages of tropical montane tree species to complex environmental factors is still limited across the Himalayas. Vegetation was surveyed along an altitudinal gradient (2450–3070 m) in six altitudinal bands in a tropical montane forest of Myanmar. We examined the effects of microclimate, soil, and microsite conditions on seedling and sapling recruitment in three dominant tree species (Quercus semecarpifolia, Rhododendron arboreum, and Symplocos lucida). We found that densities of R. arboreum and Q. semecarpifolia were higher in high and mid-altitudinal bands (2800–3000 m), whereas density of S. lucida was higher in lower altitudinal bands (2600–2700 m). Seedlings showed better recruitment in humid conditions and more sensitive to soil properties than saplings. R. arboreum and S. lucida preferred debris microsites, followed by shrub and grass microsites, whereas Q. semecarpifolia showed no significant microsite preference. Seedling recruitment mainly depended on soils and microsites, whereas sapling recruitment depended on microclimate and altitude. The study provides information on species-specific preferences and responses of montane tree species to complex environmental factors, which may contribute to restoration and sustainable forest conservation.
Concluding Thoughts: What Can(’t) we Research About Emergency e-Learning?

they great. Our cases of COVID-19 are spiking in Utah—a state that previously effectively handled the pandemic. Yet, with a US presidential election and the necessarily charged atmosphere resulting from the Black Lives Matter protests, political science enrollments have already set a record for the fall. Political science is not an industry, it is a vocation.Wemust find ways to help these students navigate the political world that has proven to be far more important in shaping the response to this pandemic than anything else. For department chairs who are handling this emergency situation going forward, I suggest the following six “good-enough” practices:
Effect of Rice Husk Ash and Phosphorus on Some Properties of Acid Sands and Yield of Okra

Abstract Investigations were conducted to determine the effects of rice husk ash (RHA) and phosphorus (P) on soil pH, cation exchange capacity, base saturation, growth, and yield of okra [Abelmoschus esculentus (L) Moench]. The experiment was a 5×3×3 factorial in randomized complete block design. The soil used for the experiment was a Typic Paleudult within the “Acid Sand” soils of Calabar. Elemental analysis of RHA and fresh rice husk are also presented in this article. The results showed that organic carbon (OC) and total nitrogen (TN) were lower in the ash than in the fresh Rice Husk (RH) samples. The combination of 20 t RHA ha−1 and 40 kg P ha−1 gave the best yields of 4.80 t ha−1 fresh fruits compared to 2.69 t ha−1 in the control. Soil pH increased from 4.4 to 5.8 and from 4.9 to 6.0 in the pot and field experiments, respectively, at the optimum level (i.e., 20 t RHA ha−1, 40 kg P ha−1, and 50 kg N ha−1). The 50 kg N ha−1 was applied to all treatments to avoid N deficiency. The trends, however, followed a strong positive linear correlation. Increases in exchangeable magnesium (Mg), potassium (K), and effective cation exchange capacity (ECEC) were observed in the soil. A mean neutralizing value as low as 1.62% (calcium carbonate equivalent) and 19.35 g kg−1 OC, inherent in the RHA, was found to be responsible for ameliorating the soil acidity and thus, improving fertility of the acid sands. The RHA had no effect on the already adequate soil available P especially at high levels (RHA >20 t ha−1). In conclusion, because RHA could amend the soil acidity and keep the soil more fertile with increase in available nutrients and maintain optimum pH, it is recommended for trial as an invaluable, environmentally friendly, cheap and low‐input material for improvement of fertility of the “Acid Sands” of southeastern Nigeria.
Biopreparation for antimicrobial material from mixture of nano silver and olive leaves extract

Silver nanoparticles were synthesized using different aqueous concentrations of silver nitrate (0.5,1, 2, 3) with olive leaf extract as reductive factor. The reaction showed a strong change in color from yellow to dark brown. Antimicrobial activity against pathogenic bacteria like Staph aureus, E. coli was studied. Spectral properties were studied by using UV- visible spectrophotometer, all concentrations shown peaks at (435)nm. The nanosilver particles tested by Dynamic light scattering (DLS) so the size particles were about (80-126)nm, zeta potential values were (-17 - -23)m V. Biological silver nanoparticles gained interest in recent past owing to its simple preparation, low cost, ecofriendly and their products more stability.