Miracle-dz/UniFAR-FTUs huggingface dataset:
A survey on the development status and application prospects of knowledge graph in smart grids

With the advent of the electric power big data era, semantic interoperability and interconnection of power data have received extensive attention. Knowledge graph technology is a new method describing the complex relationships between concepts and entities in the objective world, which is widely concerned because of its robust knowledge inference ability. Especially with the proliferation of measurement devices and exponential growth of electric power data empowers, electric power knowledge graph provides new opportunities to solve the contradictions between the massive power resources and the continuously increasing demands for intelligent applications. In an attempt to fulﬁl the potential of knowledge graph and deal with the various challenges faced, as well as to obtain insights to achieve business applications of smart grids, this work ﬁrst presents a holistic study of knowledge-driven intelligent application integration. Speciﬁcally, a detailed overview of electric power knowledge mining is provided. Then, the overview of the knowledge graph in smart grids is introduced. Moreover, the architecture of the big knowledge graph platform for smart grids and critical technologies are described. Furthermore, this paper comprehensively elaborates on the application prospects leveraged by knowledge graph oriented to smart grids, power consumer service, decision-making in dispatching, and operation and maintenance of power equipment. Finally, issues and challenges are summarised.
Analysis of Integrated Lecture Minutes Recording System Analysis Based on RFID

RFID (Radio Frequency Identification) is an identification technology for wireless data retrieval using radio waves . RFID is part of the development of semiconductor technology that is integrated with informatics systems. In the college environment, especially in the academic sector, there is often a problem with the process of recapitulation of attendance notes for lectures which is not effective and efficient. Therefore this research aims to build an information system that utilizes semiconductor RFID technology. The RFID tag used is a card that will be used as a substitute for a student ID card (KTM) in which there is a unique code that is used as the ID number of each student. This RFID tag data will be integrated with the database system so that the attendance process for lecture minutes becomes more effective and efficient. This is because students carry out the attendance process by attaching the KTM to the RFID reader, which will read the RFID tag on the KTM and store it in the database. So that the process of attendance recapitulation of lecture events becomes easier because the data is automatically stored in the database .
Amperometric Biosensor for Choline Based on Gold Screen-Printed Electrode Modified with Electrochemically- Deposited Silica Biocomposite

A mediator-free choline biosensor was devel- oped using the electrochemically assisted sol-gel deposi- tion on gold screen printed electrodes. The addition of 12 mM of cationic surfactant CTAB in silica sol allowed enhancing the stability of the sensor. The modified elec- trode demonstrated catalytic activity and stable ampero- metric response to choline for over 3 weeks of exploita- tion with the sensitivity of 6 m Am M 1 and LOD of 6mM. The interference of ascorbic acid was reduced by pre- treating the analyzed solution with MnO2 powder. The application of the sensor with the purpose of identifying choline in the baby milk demonstrated satisfactory metro- logical characteristics.
Free Radicals Generated by Radiolysis of Aqueous Solutions.

The free radicals produced in the radiolysis of aqueous solutions span the range of redox potentials from -2.9 to +2.65 volts. The identity and nature of these radicals were discussed. Most of the discussion was results obtained with low LET radiation sources (/sup 60/Co gamma radiation or electron accelerators). Water radiolysis provides the synthesis of many radicals and radical ions in aqueous solution. The primary radicals, e/sub aq//sup -/ H, OH, are well characterized. The radical population can be made to be 90% pure OH (or O/sup -/) if N/sub 2/O solutions are irradiated, the remaining 10% being H atoms. 55% of the radicals can be converted to H atoms in acid solution or in neutral phosphate solutions(e/sub aq//sup -/ reacts with H/sub 2/PO/sub 4//sup -/ to produce H). The remaining 45% (OH radicals) are difficult to convert to H by reaction with H/sub 2/, due to the slow rate of the reaction. About 100 atmospheres of H/sub 2/ are required to do the conversion in less than 10/sup -6/ sec. 3 figures, 3 tables. (DP)
A Node Virtualization Scheme for Structured Overlay Networks Based on Multiple Different Time Intervals

Sensor data which relate to the specific geographical positions, areas, and time are strongly expected in IoT. The author has studied overlay networks to efficiently process interval queries which have specific time intervals and the actual users tend to request. However, unfairness and a concentration of the loads occur for the specific processing computer (node) in the previous method because the density of data or those generators/providers is different from those related values. In this paper, the author proposes the enhanced scheme for structured overlay networks based on multiple different time intervals. The proposed method uses node virtualization to equalize the loads of each real (physical) node. The simulation results showed that the proposed method can increase the fairness of the number of the assigned data among physical nodes.
Relational values of nature: leverage points for nature policy in Europe

ABSTRACT Relational values reflect the qualities of the relationships between humans and nature, such as care, social bonding, place attachment and spiritual meanings. In this perspective article, we argue that understanding relational values is vital for nature conservation, and we identify how incorporation of these values may function as leverage points for achieving more effective nature policy. We discuss the distinctive features of the concept of relational values and elaborate how relational values strongly influence people’s perceptions of, engagement with and action for nature. Relational values can also provide important deep leverage points for policy interventions aiming to support citizen’s contribution to nature conservation, to strengthen biodiversity policy and the relationship between people and nature. Based on three realms of leverage (re-think, re-structure and re-connect), we distinguish six routes through which relational values can be integrated in policies and practices of nature conservation: (1) incorporation of pluralized meanings of nature; (2) the uptake of relational language in policy discourse; (3) a prioritization of landscape-based policy; (4) empowering citizens in nature conservation; (5) re-orienting nature education to stimulate people’s personal bond with nature; and (6) using digital technology to stimulate new relationships with nature.
Does Social Capital Matter for Total Factor Productivity? Exploratory Evidence from Poland

Two issues connected with sustainable development are analysed in this article: total factor productivity (TFP), which measures the efficiency of transforming physical capital and labour into production, and social capital, which is increasingly considered as a factor of TFP. TFP is sometimes viewed as a measure of sustainability, and its high value indicates an effective way of combining and using limited resources. Social capital, in turn, is a determining factor in the social, economic, and environmental dimensions of development. The subject of this analysis is the impact of social capital on TFP. Social capital generates synergistic effects and creates added value using the existing resources. Therefore, it is legitimate to regard it as one of the determinants of TFP. The role of social capital in sustainable development is theoretically grounded and confirmed by numerous empirical studies. Nevertheless, due to the deep dependence on the context, the mechanisms of the impact of this capital on economic effects are still not fully understood. In this paper, social capital is analysed in the context of the post-transformation economy. This context seems to be interesting for two reasons: the relative weakness of social capital in post-communist countries and extensive nature of development these countries have experienced in recent decades, which together can be a barrier to long-term growth in these economies. The purpose of the paper is to identify and assess the impact of social capital in Poland on TFP in a regional breakdown (Nomenclature of Territorial Units for Statistics II - NUTS II). The research period covers the years 2002–2016 and employs econometric modelling methods. Social capital turns out to be a factor in explaining the level of TFP in Polish regions.
The structure and synthesis of nepenthone-A, a naphthoquinone from Nepenthes rafflesiana

The structure of a naphthoquinone, nepenthone-A, isolated from Nepenthes rafflesiana Jack, is shown to be 4,7-dihydroxy-9-methoxy-6-methylnaphtho[2,3-d]-1,3-dioxole-5,8-dione (6), first by the synthesis of its di-O-methyl derivative (7), and then by the synthesis of the natural product.
Electrical Properties of Phthalocyanine-Halogen Complexes

Electrical conductivities and thermoelectric power of the complexes of phthalocyanine with halogen (iodine or bromine) have been studied. The electrical conductivity of phthalocyanines exposed to halogen vapor increases drastically up to 10 to 11 orders of magnitude, and its activation energies of the complexes with higher conductivities are smaller than those with lower conductivities. Positive thermoelectric power is observed in these complexes, which indicates a hole conduction in these materials. The absorption spectra of thin films of these complexes are also strongly influenced by halogen.
HYDROGENASE ACTIVE SITES: A NEW PARADIGM FOR NATURAL PRODUCT-INSPIRED SYNTHESIS BASED ON ORGANOMETALLIC CHEMISTRY

The scientific career of F.G. A. Stone witnessed the birth of transition metal organic chemistry and contributed greatly through an amazing period of development. The maturation and acceptance of this new field depended on the accumulated syntheses and careful characterization of compounds that spanned the transition metal series, setting “in Stone” the precedents, principles, and tenets of structure and bonding of species containing a metal-carbon bond. [ 1 ] These well-described observations from Stone's laboratory permitted predictions that guided applications to homogeneous catalysis from the organic chemist's bench to the industrial plant processes. This new organometallic chemistry ultimately changed our lives. Nevertheless, there was “old” organometallic chemistry, well developed in nature from billions of years of evolution. It was just waiting to be discovered when the chemistry in our Schlenk flasks, signals from our spectra, and structures from our crystal tubes were sufficiently understood.
The Effect of Graphene/Ag Nanoparticles Layer on the Performances of Organic Solar Cells

Graphene/Ag nanoparticles (GAg) were fabricated via a facile method, employing graphite oxide as a precursor of graphene (GNS), AgNO3 as a precursor of Ag nanoparticles, and sodium citrate as a reducing and stabilizing agent. We synthesized three kinds of GAg and denominated as GAg-1、GAg-2 and GAg-3. Graphene exhibits good electron conductivity, thermal conductivity, chemical stability and mechanical strength. We investigated the effect of inserting Graphene/Ag nanoparticles between hole transfer layer (HTL) of poly (ethylene dioxythiophene) (PEDOT)-polystyrene sulfonic acid (PSS) (PEDOT:PSS) and active layer (P3HT:PCBM =1:1 weight ratio) on the characteristics of polymer solar cell. The cell structure was ITO/PEDOT:PSS/GAg/P3HT:PCBM/Ca/Al. The concentration of Graphene/Ag nanoparticles solution was 2.0 mg/ml and the GAg nanoparticles layer was coated by spin-coating at 6000 rpm. We studied the effect of GAg layer addition on the photovoltaic performance. We used the UV-Vis, SPM, FE-SEM and solar simulator to measure the absorbance, roughness, surface morphology, and power conversion efficiency (PCE), respectively. From these results, we found that the short circuit current density (Jsc), fill factor (FF) and PCE of the cells with GNS or GAg were always higher than those of cell without GNS or GAg. The cell with GAg-2 had the highest short circuit current density (Jsc) of 9.14 mA/cm2, an increase of 28.4%, highest fill factor (FF) of 0.65, an increase of 32.7% and highest PCE of 3.82%, an increase of 71.3% when compared to standard device with active layer of P3HT:PCBM =1:1. These improvements were due to the high carrier mobility of graphene.
Management, the state and union-weakening practices in Chile: A case study approach of the dual and ambivalent role of the state in a process of democratisation

The article analyses a range of union-weakening practices developed in three Chilean workplaces. The findings suggest the existence of an ambivalent employment relationship between employers and trade unions where an ongoing informal labour–management partnership simultaneously coexisted with de-collectivising strategies. The article argues that the Chilean state has aided employers in the implementation of such union-weakening practices through the labour legislation. Sixty-nine semi-structured interviews with trade union leaders, human resource managers and field experts inform this research. The legacy of previous forms of state intervention that countered the processes of democratisation is found to be essential in the use of de-collectivisation.
Measurements Of Biogenic Hydrocarbons And Their Atmospheric Degradation In Forests

Abstract An analytical procedure for the sampling and quantitative determination of biogenic hydrocarbons in the atmosphere is presented. The method is based on the adsorptive preconcentration of the hydrocarbons using Tenax TA/Carbopack B filled sampling tubes followed by thermodesorption of the trapped compounds and gas chromatographic analysis. To avoid losses of the biogenic alkenes as a consequence of their reaction with ozone on the adsorbents during the sampling step, an ozone scrubber is used in front of the adsorption tubes. Diurnal variations of the monoterpene- and ozone-concentrations are determined at different heights in and above a forest stand (coniferous and deciduous trees) in the Vosges (Col du Donon, 760 m a.s.l.) in order to elucidate the importance of terpene-oxidation reactions on the formation of peroxidic products in forest air.
Performance Measurement of the Business Process Outsourcing Sector in Kenya: Balance Scorecard Approach

The aim of this study is to investigate the performance measurement of the business process outsourcing sector in Kenya using the balanced scorecard approach. The components of the approach include financial, internal processes, customers, learning and growth. The study was carried out in all the registered business process outsourcing companies in Kenya and questionnaires administered to the marketing managers of the respective companies. To analyze data, descriptive statistics and Kruskal Wallis Test were used. Descriptive statistics was used to ascertain the view of the performance of the sector by use of means and standard deviations. Kruskal Wallis Test was used to obtain the perception of the respondents on the use of the four balanced scorecard perspectives in their companies. The study established that the business process outsourcing sector in Kenya used the balanced scorecard that included both financial and non- financial measures. However, they tended to lean more on the use of financial measures. This paper, therefore, recommends the use of non- financial measures to measure performance too.
A novel phase bias estimation method for multichannel HRWS SAR system in azimuth based on RDS analysis

ABSTRACT Multichannel synthetic aperture radar (SAR) systems in azimuth can realize high-resolution and wide-swath (HRWS) imaging, which has attracted intensive research interests. The azimuth ambiguities caused by non-uniform sampling can be suppressed by digital beamforming technique. However, the presence of inevitable channel errors in the multichannel SAR system deteriorates the performance of ambiguity suppression. Based on the analysis of the characteristics of the multichannel SAR echoes, it was found that phase bias among channels can cause jumping in the reconstructed Doppler spectrum (RDS). This letter presents a novel data-based phase bias estimation method for HRWS SAR system. With the assumption that the splice of echo energy inside the Doppler bandwidth is continuous, there is no jumping in the RDS. The estimation of phase biases in the multichannel HRWS SAR system can be translated into the optimization solution issue. Simulation experiments and real data processing results validated the effectiveness of the proposed method.
Flat Ferromagnetic, Epitaxial 48Ni/52Fe(111) Films of few Atomic Layers

Flat epitaxial 48Ni/52Fe(111) films are prepared by evaporation onto atomically flat Cu(111) films. All films consisting of three or more layers (d ≧ 6 A) show a far-reaching fit to the model structure of a flat single crystal. The magnetic properties are determined for (70 ≦ T ≦ 400) °K with an oscillation type torsion magnetometer, which can detect a moment of 5 × 10−8 G cm3. All films of three or more layers are ferromagnetic without any indication of superparamagnetism; Curie-temperature and magnetization decrease monotonously with film thickness; there is good qualitative agreement with spin-wave theory and Green's function theory; the magnetization is independent of the field, however, within 1%, for (300 ≦ H ≦ 5000) Oe, while the theory predicts considerable dependence on the field. Strong anisotropies relating to the surface normal as easy axis may easily be interpreted as Neel-type surface anisotropies. Flache epitaktische 48Ni/52Fe(111)-Schichten wurden durch Aufdampfen auf atomar ebene Cu(111)-Schichten prapariert. Alle Schichten aus 3 oder mehr Atomlagen (d ≧ 6A) entsprechen weitgehend dem Strukturmodell des ebenen Einkristalls. Die magnetischen Eigenschaften wurden fur (70 ≦ T ≦ 400) °K bestimmt in einem Torsions-Schwingungs-Magnetometer, welches den Nachweis eines Moments von 5 × 10−8 G cm3 erlaubt. Alle Schichten aus 3 oder mehr Atomlagen sind ferromagnetisch ohne jedes Anzeichen von Superparamagnetismus. Curie-Temperatur und Magnetisierung fallen monoton mit der Schichtdicke, in guter qualitativer Ubereinstimmung mit Spinwellentheorie und Greenscher Funktionentheorie. Die Magnetisierung ist jedoch fur (300 ≦ H ≦ 5000) Oe innerhalb 1% vom Feld unabhangig, wahrend die Theorie eine betrachtliche Feldabhangigkeit postuliert. Starke Anisotropien bezuglich der Flachennormalen als leichter Achse lassen sich zwanglos als Oberflachenanisotropien nach Neel interpretieren.
Self-assemblies of the six-armed star triblock ABC copolymer: pH-tunable morphologies and drug release

We herein report a well-defined six-armed star triblock copolymer poly(2-(diethylamino)ethyl methacrylate)-b-poly(methyl methacrylate)-b-poly(poly(ethylene glycol) methyl ether methacrylate) (s-(PDEA62-b-PMMA195-b-PPEGMA47)6) that was synthesized by the core-first ATRP (atom transfer radical polymerization) method. The star triblock copolymer has low critical aggregation concentration (CAC) values in aqueous solutions (0.78–2.5 mg L−1) and shows pH-tunable self-assembly behavior. It could self-assemble into multicompartment micelles at pH 10.5, vesicles at pH 7.4 and micelles at pH 2.0. Regardless of micelles or vesicles, their hydrodynamic diameter (Dh) could respond to the change in environmental pH. Interestingly, the reversible vesicle–micelle transition could be achieved via simply adjusting the surrounding pH. The transition was a result of PDEA moieties being responsive to the pH change instead of reassembly. Using the hydrophobic drug celecoxib as a model guest molecule, loading capacities of the star copolymer aggregates under the above-mentioned three pH conditions and the influence of the presence of the guest molecules on the morphology of the aggregates were investigated. It was found that loading capacities of the star copolymer were 33–35 wt% (relative to the polymer) at pH 7.4, 26–28 wt% at pH 10.5 and 10–15 wt% at pH 2.0, and at pH 7.4, incorporation of 33 wt% celecoxib did not change the morphology of vesicles evidently. However, at pH 10.5, the presence of 26 wt% celecoxib could lead to self-assembly of the star copolymer into vesicles. The celecoxib release from the loaded self-assemblies is pH tunable.
Undrained Cylindrical and Spherical Cavity Expansion in Elastic-Viscoplastic Soils

Various undrained cavity expansion solutions for elastic-plastic soil have been proposed previously. However, no solution has been presented for elastic-viscoplastic (EVP) soil until now. This paper presents a general solution method for solving the classical one-dimensional (1D) boundary value problem (BVP) for undrained cylindrical or spherical cavity expansion in EVP soil with an emphasis on the rate effect of soil. The solution method is summarized as three standard procedures: (a) obtaining the soil displacement and strain under incompressible conditions; (b) calculating the effective stress of soil through a suitable constitutive law; and (c) obtaining the pore pressure by numerically solving the stress equilibrium equation through the finite difference method (FDM) or other numerical solution techniques. The numerical algorithms for calculating the effective stress and pore pressure are very simple without any complex iteration processes, and they require little calculation time but provide high computational accuracy. In addition, some numerical results are given to investigate the influence of the cavity expansion velocity on the cavity expansion response. The proposed solution procedure is general and can be applied not only for the EVP model but also for other plasticity models, and the given EVP solution can be applied to interpret the rate effect of the CPT test and pile penetration.