Miracle-dz/UniFAR-FTUs huggingface dataset:
Correlation of self‐ and interspecific incompatibility among sympatric Hedyotis species (Rubiaceae) and consequences for hybridization

Breakdown of self‐incompatibility increases opportunities for both self‐fertilization and interspecific hybridization, although the latter is dependent on the extent of competition between heterospecific and conspecific pollen. We investigate the mating system and pollination biology of five phylogenetically closely related species within a distylous species complex in Hedyotis L. (Rubiaceae) in southern China. The complex comprises Hedyotis acutangula Champ. ex Benth. , Hedyotis shiuyingiae T.Chen, Hedyotis vachellii (Hook. & Arn.) Kuntze, and two putative hybrid species, Hedyotis bodinieri (H.Lév.) Chun and Hedyotis loganioides Benth. , hypothesized to result from interbreeding between these species. We test the hypothesis that the breakdown of self‐ and interspecific incompatibilities in sympatric Hedyotis species might allow interspecific hybridization in natural populations. We assessed the extent of self‐ and interspecific incompatibility in sympatric populations, including investigations of spontaneous and artificial self‐pollination, geitonogamy, inter‐ and intramorph xenogamy. Artificial interspecific crosses were undertaken between H. acutangula, H. shiuyingiae, and H. bodinieri, between H. acutangula and H. vachellii, and between H. acutangula and H. loganioides. Hedyotis acutangula is demonstrated to be self‐ and interspecific compatible, whereas H. vachellii, H. bodinieri, and H. loganioides are self‐compatible and interspecific incompatible; H. shiuyingiae, in contrast, is strictly self‐ and interspecific incompatible. Comparisons of pollen tube growth rates in hybridizing species‐pairs revealed that heterospecific pollen of H. shiuyingiae, H. vachellii, and H. bodinieri can compete with conspecific self‐pollen of H. acutangula. Our study therefore indicates that the breakdown of self‐incompatibility directly and indirectly facilitates interspecific hybridization and provides a platform for better understanding evolutionary directionality in Hedyotis.
A First-Principles Study of Structure, Elastic and Electronic Properties of GeTiO3 as Environmentally Innocuous Ferroelectric Perovskites

The structural parameters, elastic properties, spontaneous polarization, electronic band structure, and density of states (DOS) of GeTiO3 in tetragonal phase have been studied computationally using pseudopotential plane-wave (PP-PW) method based on the density functional theory (DFT). The generalized gradient approximation (GGA) was used to estimate the exchange-correlation energies. The equilibrium lattice parameter, unit cell volume, bulk modulus and its derivative are obtained and compared with the available theoretical data. The elastic characteristics such as elastic constants, Poisson’s ratio, elastic modulus, and anisotropy factor are obtained in the pressure range 0–50 GPa. Our computed results of elastic constant satisfy Born’s stability criterion. In view of Pugh’s prediction standard, the material is taken as ductile. Once the elastic constant is calculated, the Debye temperature of GeTiO3 compound is also evaluated from the average sound velocity. The density of states, band structures, and charge-density distribution are discussed and compared with previous computational results. The calculation within Berry’s phase approach indicate a high spontaneous polarization of tetragonal GeTiO3 (1.125 C/m2). Thus, the substance is identifi ed as a promising environmentally friendly ferroelectric material.
Neue Naturstoffe aus Collembolen

Im Rahmen dieser Arbeit wurden die Collembolenarten, Ceratophysella denticulata, Ceratophysella sigillata, Onychiurus fimatus, Podura aquatica, Proisotoma minuta, Tetrodontophora bielanesis und Xenylla grisea auf neue und biologische aktive Naturstoffe untersucht. Zur Identifikation leichtfluchtiger Substanzen wurden die Tiere mit Hilfe der CLSA-Technik untersucht. Die Inhaltstoffe der gewonnenen Extrakte wurden mit Hilfe verschiedener chromatographischer und spektroskopischer Methoden aufgeklart. Die Konfigurationsaufklarung erfolgte durch den Vergleich der Naturstoffe mit synthetisierten Vergleichssubstanzen an chiralen Chromatographiephasen. Bei den Collembolenarten der Gattung Ceratophysella sigillata und denticulata konnten die Tetraterpene Lycopan, Lycopaen und Lycopadien als Hauptbestandteil der Cuticula identifziert werden. Bei Podura aquatica wurden die Tetraterpene Poduran und das Decahydropentaprenylbourbon-11-en und bei Xenylla grisea konnten die C-35 Analoga, Octahydrotetraprenylkelsoen- and Bourbon-11-en, identifiziert werden. C-35 Terpene sind in der Natur sehr selten. Die Konfiguration des Bourbon-11-enanalogons ist durch den Vergleich des naturlichen Derivates mit dem synthetisierten (1S,2R,5S,6S,7R)-1,5-Dimethyl-tricyclo[5.3. 0.02. 6]decan-8-on bewiesen worden. In den Methylacetatextrakten von Ceratophysella sigillata konnten verschiedene chlorierte Naturstoffe gefunden und als als 7-Acetyloxy-9-dichlormethylen-6,10-dihydroxy-1-methyl-4-trichlormetyl-3-oxabicyclo[4.4. 0]decan-2-on und 7-Acetyloxy-4,9-bis(dichlormethylen)-6,10-dihydroxy-1-methyl-3-oxabicyclo[4.4. 0]decan-2-on identifiziert.
DYNAMIC CAPABILITIES AND PERFORMANCE OF HOSPITALITY FIRMS IN SOUTH AFRICA: THE MEDIATING EFFECT OF INNOVATION

Dynamic capabilities describe a firm’s ability to build, integrate and reconfigure internal and external competencies to address rapidly changing environments and improve firm competitiveness. The aim of the study was to investigate the effect of four dimensions of dynamic capabilities (sensing, learning, integrating, and coordinating) on the performance of hospitality firms. In addition, the study examined the mediating role of product innovation in the relationship between dynamic capabilities and performance. The study adopted the quantitative research design and the cross-sectional survey method was used for data collection. The Partial Least Square Structural Equation Modelling was used for data analysis. Based on a dataset of 135 respondents, the results indicated that sensing, learning and coordinating significantly affect the performance of hospitality firms. Innovation mediates the relationship between sensing and learning capabilities and performance. Theoretical and managerial implications are discussed. The provision of seminars and training on dynamic capabilities and innovation to top management and employees is important.
Financialization and income inequality: bringing class struggle back in

Financialization and rising income inequality are two of the most pronounced economic developments of recent decades, and there is increasing evidence that these trends are somehow related. However, explanations of this link are still limited, and pay little attention to workers themselves. As a result, the impact of financialization on income inequality appears at most as an unfortunate side-effect. This article takes a different approach by investigating both financialization and income inequality from within the historical development of the class struggle in the United States economy. It shows that the economic problems of the 1970s that provided the impetus for financialization were closely related to the escalating conflicts between labor and capital, in which the state served as an increasingly important terrain of struggle. Viewed from this perspective, rising income inequality appears less as an unexpected outcome of financialization and more as its very raison d’etre.
Gait Recognition Based on Local Graphical Skeleton Descriptor With Pairwise Similarity Network

Gait recognition aims to identify a human through a walking sequence. It is a challenging task in computer vision since monocular camera loses most of the 3D information. Previous works described gait features with the contours of shape or the global geometrical characters of skeleton. So little work is researched on the local patterns of gait skeleton. In this paper, to resist the dress changes and speed changes, a Local Graphical Skeleton Descriptor (LGSD) is proposed to describe both the inner and intra local graphical patterns of a human gait skeleton. The gait features from the same or different identities are paired up and a Pairwise Similarity Network (PSN) is proposed to maximize the similarity of True matched pairs and minimize the similarity of False matched pairs. The contributions of our method are: 1) LGSD is proposed to describe human gait by computing four novel local geometrical patterns of skeleton sequences, which makes use of the intuitive cognition of gait based on the prior knowledge of mankind. 2) PSN is implemented by a two-stream CNN structure to build the gait model, which fused two popular gait recognition strategies. 3) The robustness of our method to dress changes and speed changes is proved on the public datasets. We have also achieved some state-of-the-art results on these datasets. The proposed method is examined on three public gait datasets which have RGB or infrared frames for evaluation: the CASIA-B dataset, the NLPR gait database, and the CASIA-C dataset. The performers in these datasets are walking under different views, speeds or dresses. The results are further compared with previous approaches to confirm the effectiveness and the advantages of our method.
Effects of vapor pressure deficit, nitrogen fertilizer and leaf turnover on the oxygen isotope composition of cellulose in leaves of a perennial C 4 grass ( Cleistogenes squarrosa )

In this study, the relationship between oxygen isotope composition of leaf water and cellulose, and effects of external factors on that relationship in Cleistogenes. squarrosa , a perennial C 4 grass, and the possibilities of oxygen isotope in cellulose of successive leaf formed along the tiller as a chronometer were explored. Results showed that vapor pressure deficit significantly affected the relationship, but nitrogen fertilizer supply did not affect, successive leaves produced by tillers of C. squarrosa provided an oxygen isotopic record useful for reconstructions of short-term VPD dynamics.
The Potential of Combination Therapies and Patient Stratification to Improve CCR2 Inhibition Therapeutics

Chemokines and their receptors are the communication mechanism used by cells of the immune system, allowing them to identify and eliminate pathogens and cancerous cells. However, it is becoming clear that chemokines and their receptors are also playing a role in tumor progression and metastasis [1,2]. An example of such coopting is the CCL2-CCR2 axis. The chemokine CCL2/MCP-1 (monocyte chemoattractant protein-1) is known to bind the CCR2 receptor on monocytes [3] and attract them to areas of need. What is now clear is that CCR2 levels are high in tumors of a number of cancer types. For example, in bladder cancer, 12 different patient datasets [4] all show that CCL2 expression is higher in the more advanced, muscle invasive disease than the non-muscle invasive disease [5]. In line with this, high CCL2 expression correlates with a worse overall survival in bladder cancer [5]. CCL2 and CCR2 are also associated with disease progression in many other cancer types including breast, ovarian, lung and colon [6,7].
Flyback Photovoltaic Micro-Inverter with a Low Cost and Simple Digital-Analog Control Scheme

The single-stage flyback Photovoltaic (PV) micro-inverter is considered as a simple and small in size topology but requires expensive digital microcontrollers such as Field-Programmable Gate Array (FPGA) or Digital Signal Processor (DSP) to increase the system efficiency, this would increase the cost of the overall system. To solve this problem, based on a single-stage flyback structure, this paper proposed a low cost and simple analog-digital control scheme. This control scheme is implemented using a low cost ATMega microcontroller built in the Arduino Uno board and some analog operational amplifiers. First, the single-stage flyback topology is analyzed theoretically and then the design consideration is obtained. Second, a 120 W prototype was developed in the laboratory to validate the proposed control. To prove the effectiveness of this control, we compared the cost price, overall system efficiency, and THD values of the proposed results with the results obtained by the literature. So, a low system component, single power stage, cheap control scheme, and decent efficiency are achieved by the proposed system. Finally, the experimental results present that the proposed system has a maximum efficiency of 91%, with good values of the total harmonic distortion (THD) compared to the results of other authors.
Making of rebel talent through workplace ostracism: A moderated-mediation model involving emotional intelligence, organizational conflict and knowledge sharing behavior

Abstract Workplace deviant behavior (WDB) and workplace ostracism (WO) have emerged as one of the most toxic behaviors that breed self-protection and self-interest in today’s organizations. However, limited evidence is available on the underlying factors, such as organizational conflict (OC), knowledge-sharing behavior (KSB) and emotional intelligence (EI), in explaining the WO-WDB relationship. Hence, the present study aims to introduce and empirically validate a moderated-mediation model of workplace deviant behavior, involving WO, OC, KSB and EI, respectively. Drawing on study data from 250 officials in the higher education public sector institutions in Pakistan, and employing structural equation modeling with partial least squares, the findings revealed a significant positive effect of WO on WDB. Besides the validation of the mediating roles of OC and KSB, the findings also confirmed a significant moderating influence of EI. The study implications provide theoretical and practical insights to better interpret KSB, OI and EI in organizations that can generate effective deterrence towards WO and WDB.
Agricultural Effects on Streams and Rivers: A Western USA Focus

Globally, croplands and rangelands are major land uses and they have altered lands and waters for millennia. This continues to be the case throughout the USA, despite substantial improvements in treating wastewaters from point sources—versus non-point (diffuse) sources. Poor macroinvertebrate assemblage condition occurs in 30% of conterminous USA streams and rivers; poor fish assemblage condition occurs in 26%. The risk of poor fish assemblage condition was most strongly associated with excess nutrients, salinity and sedimentation and impaired riparian woody vegetation. Although the Clean Water Act was passed to restore and maintain the integrity of USA waters, that will be impossible without controlling agricultural pollution. Likewise, the Federal Land Policy and Management Act was enacted to protect the natural condition of public lands and waters, including fish habitat, but it has failed to curtail the sacred cows of livestock grazing. Although progress has been slow and spotty, promising results have been obtained from basin and watershed planning and riparian zone protections.
Multiplicity of  the second‐largest eigenvalue of a planar graph

The multiplicity of the second‐largest eigenvalue of the adjacency matrix A ( G ) of a connected graph G , denoted by m ( λ 2 , G ) , is the number of times of the second‐largest eigenvalue of A ( G ) appears. In 2019, Jiang, Tidor, Yao, Zhang, and Zhao gave an upper bound on m ( λ 2 , G ) for graphs G with bounded degrees, and applied it to solve a longstanding problem on equiangular lines. In this paper, we show that if G is a 3‐connected planar graph or 2‐connected outerplanar graph, then m ( λ 2 , G ) ≤ δ ( G ) , where δ ( G ) is the minimum degree of G . We further prove that if G is a connected planar graph, then m ( λ 2 , G ) ≤ Δ ( G ) ; if G is a connected outerplanar graph, then m ( λ 2 , G ) ≤ max { 2 , Δ ( G ) − 1 } , where Δ ( G ) is the maximum degree of G . Moreover, these two upper bounds for connected planar graphs and outerplanar graphs, respectively, are best possible.
On the hegemonic power of the pandemic discourse

The paper claims that corona discourse is here to stay. The pandemic has achieved hegemony over humanity. The everyday discourse patterns that from the start were packed with medical and epidemiological terms and phrases have come to stay. And epidemiology has become in no uncertain terms the new hegemony. What has happened brings to mind Gramsci’s idea of hegemony which captures and imprisons us. One section looks at how the UK government dealt with the pandemic. Some aspects have been underplayed by the government from the start of the pandemic. One is how COVID-19 has affected certain socio-economic groups and professions differently. What the majority of the media comments on COVID-19 and the measures being taken, such as the just quoted UK politicians and experts are involved in, lack is a bigger picture. Their attention is focused on immediate problems and proximate causes. The effects of the pandemic on people’s lives are briefly analyzed. The rapid vaccine production and rollout have changed the situation. At the same time, the emergence and rapid spread of new variants have demonstrated what global health experts warned all along: that none of us is safe until everyone is safe. Subsequent sections discuss, firstly, the focus on molecular biology and the neglect of the broader eco-social frame within which such viruses develop. Secondly, the failure to prepare for the current pandemic is alluded to. A significant issue concerning the role of the European Union and the pharmaceutical companies like AstraZeneca in the delivery of vaccines is discussed. Attempts and actions to counteract the hegemonic control are outlined. The discussion of the situation of COVID-19 within the broader context of environmental disintegration rounds off the paper.
Effective hydrogen productions from propane steam reforming over spinel‐structured metal‐manganese oxide redox couple catalysts

In this study, redox couple metal components (M═Mn) were introduced in a catalyst design. Main catalytic components (M═Fe, Co, Ni, or Cu) were combined with Mn, resulting in spinel‐structured M2MnO4 for applications to the propane steam reforming reaction as catalysts. Hydrogen selectivity and propane conversions over spinel‐structured 30.0 wt% M2MnO4 loaded on 70.0 wt% γ‐Al2O3 support were comparable. The Ni2MnO4/Al2O3 exhibited extremely stable catalytic performance for 3 recycling tests. Catalytic activities decreased in the order Ni2MnO4/Al2O3 > Co2MnO4/Al2O3 > Fe2MnO4/Al2O3 > Cu2MnO4/Al2O3 > Mn2O3/Al2O3. A mechanism for propane steam reforming over M2MnO4 was suggested, and it was found that the catalytic performance for the reforming reaction was closely related to the stability of metal oxidation states via Mn oxide assistance. Furthermore, this study suggested that the Mn oxide delivered oxygen to the main catalytic active site, in particular the Ni component, leading to the rapid cracking and oxidation of C3H8, C2H4, and CH4, and increased hydrogen production.
Psychological Well Being Pada Mantan Pengguna NArkoba di Kota Palembang

Abstract : This study aims to determine the psychological well being of former drug users in the city of Palembang. Factors causing well being, and psychological dynamics in former drug users in the city of Palembang, this study uses a qualitative research design and uses a case study approach to be able to find out the causes of well being and psychological dynamics of the research subjects. In this study, researchers used 7 sources, 2 people as research subjects, two people as informants knew from each subject and 2 people as informants. The results of this study found that there are factors that cause both the subject of being well that arises from within oneself (internal) and factors that arise from outside self (external). The two subjects in this study broadly have the same causative factors of being well although there are some differences in the positive emotion and engagement factors found in the study. Keywords: Psychological well being, former drug user, Case Study Approach Abstrak : Penelitian ini bertujuan untuk mengetahui psychological well being pada mantan pengguna narkoba di kota palembang. Faktor penyebab well being, dan dinamika psikologis pada mantan pengguna narkoba di kota Palembang, Penelitian ini menggunakan desain penelitian kualitatif serta menggunakan pendekatan studi kasus untuk dapat mengetahui faktor penyebab well being serta dinamika psikologis dari para subjek penelitian. Dalam penelitian ini, peneliti menggunakan 7 orang sumber, 2 orang sebagai subjek penelitian, dua orang sebagai informan tahu dari masing-masing subjek dan 2 orang sebagai informan pelaku. Hasil penelitian ini menemukan bahwa adanya faktor penyebab kedua subjek well being yang muncul dari dalam diri sendiri (internal) dan faktor yang timbul dari luar diri (eksternal). Kedua subjek di dalam penelitian ini secara garis besar memiliki faktor penyebab well being yang hampir sama walaupun terdapat beberapa perbedaan di dalam faktor positive emotion dan engagement yang ditemukan dalam penelitian. Kata Kunci : Psychological well being, mantan pengguna narkoba, Pendekatan studi kasus
Innovative IoT Solutions and Wearable Sensing Systems for Monitoring Human Biophysical Parameters: A Review

Digital and information technologies are heavily pervading several aspects of human activities, improving our life quality. Health systems are undergoing a real technological revolution, radically changing how medical services are provided, thanks to the wide employment of the Internet of Things (IoT) platforms supporting advanced monitoring services and intelligent inferring systems. This paper reports, at first, a comprehensive overview of innovative sensing systems for monitoring biophysical and psychophysical parameters, all suitable for integration with wearable or portable accessories. Wearable devices represent a headstone on which the IoT-based healthcare platforms are based, providing capillary and real-time monitoring of patient’s conditions. Besides, a survey of modern architectures and supported services by IoT platforms for health monitoring is presented, providing useful insights for developing future healthcare systems. All considered architectures employ wearable devices to gather patient parameters and share them with a cloud platform where they are processed to provide real-time feedback. The reported discussion highlights the structural differences between the discussed frameworks, from the point of view of network configuration, data management strategy, feedback modality, etc.
Formaldehyde content in atmospheric air of Saratov

The analysis and estimation of the sources of formaldehyde emissions into the atmospheric air in Saratov are presented. Average monthly, average annual and average long-term concentrations of formaldehyde are calculated. The dynamics of the content of formaldehyde in the atmospheric air of the city is characterized. Seasonal variability of formaldehyde emissions is shown. The spatial distribution of formaldehyde concentrations in the city is given.
Investment Strategy in Sharia Mutual Funds: Case Study on the Indonesian Capital Market

Sharia (Islamic) mutual funds, which are one of the securities that are categorized as socially responsible investment funds, are experiencing rapid growth in Indonesia. For this reason, it is necessary to study the strategies to invest in sharia mutual funds in Indonesia. This study uses three aspects to guide investment strategies in sharia mutual funds: previous year’s performance of sharia mutual funds, capital market performance, and the characteristics of mutual fund companies. By using data of Islamic mutual fund in Indonesia from 2010 to 2018, this study offers the following strategies. To invest in fixed income mutual funds, select fixed income mutual funds which in the previous period were in the Top 5 returns. To invest in mixed mutual funds, choose newly issued mixed mutual funds, especially when that year there were several new mixed mutual funds offered. For stock mutual funds, choose mutual funds with the cheapest transaction costs and when the stock market is estimated to have good prospects.