bluuebunny/crossref_metadata_2025_split huggingface dataset:
Branding: too often overlooked in disruptive innovation and social purpose arenas
Authors: Aaker David 
Published: May 2023

AbstractBranding is critical to disruptive innovation and social purpose programs, both strategic arenas of contemporary and future concern. Despite the progress that has been made in the last three decades, establishing branding as an imperative for business strategy, the strategic relevance and practical impact of branding for these strategic arenas is often still underappreciated, underevaluated and underused in practice. In this commentary, I explain why branding is critical for the success of disruptive innovations and societal programs while arguing that branding academics and practitioners must remain or again become more outspoken advocates of branding. We need to communicate the conceptual and practical power of branding to the thought leaders outside of marketing, many of whom are academics in other fields, and we ought to do more to convince executives and practitioners of the mission-critical role of branding beyond marketing.
Internal ring waves in a three-layer fluid on a current with a constant vertical shear
Authors: Tseluiko D , Alharthi N S , Barros R , Khusnutdinova K R 
Published: May 2023

Abstract
Oceanic internal waves often have curvilinear fronts and propagate over vertically sheared currents. We present the first study of long weakly-nonlinear internal ring waves in a three-layer fluid in the presence of a horizontally uniform background current with a constant vertical shear. The leading order of this theory leads to the angular adjustment equation—a nonlinear first-order ordinary differential equation describing the dependence of the linear long-wave speed on its angle to the direction of the current. The compact ring waves, well studied in the absence of a current, correspond to the singular solution (envelope of the general solution) of this equation, and they can exist only under certain conditions. The constructed solutions reveal qualitative differences in the shapes of the wavefronts of the two baroclinic modes: the wavefront of the faster mode is elongated in the direction of the current, while the wavefront of the slower mode is squeezed. Moreover, depending on the vorticity strength, several different regimes have been identified. When the vertical shear is weak, part of the wavefront is able to propagate upstream, while when the shear is strong enough, the whole wavefront propagates downstream. A richer pattern of behaviour is observed for the slower mode. As the shear increases, singularities of the swallowtail-type may arise and, eventually, solutions with compact wavefronts crossing the downstream axis cease to exist. We show that the latter is related to the long-wave instability of the base flow. We obtain the cKdV-type amplitude equation and examine analytical expressions for its coefficients. Using this cKdV-type equation we numerically model the evolution of the waves for both modes. The initial stage of the evolution is in agreement with the leading-order predictions for the deformations of the wavefronts. Then, as the wavefronts expand, strong dispersive effects occur in the upstream direction. Moreover, when nonlinearity is enhanced, fission of waves is observed in the upstream part of the ring waves.
On the importance of excited state species in low pressure capacitively coupled plasma argon discharges
Authors: Wen De-Qi , Krek Janez , Gudmundsson Jon Tomas , Kawamura Emi , Lieberman Michael A , Zhang Peng , Verboncoeur John P 
Published: May 2023

Abstract
In the past three decades, first principles-based fully kinetic particle-in-cell Monte Carlo collision (PIC/MCC) simulations have been proven to be an important tool for the understanding of the physics of low pressure capacitive discharges. However, there is a long-standing issue that the plasma density determined by PIC/MCC simulations shows quantitative deviations from experimental measurements, even in argon discharges, indicating that certain physics may be missing in previous modeling of the low pressure radio frequency (rf) driven capacitive discharges. In this work, we report that the energetic electron-induced secondary electron emission (SEE) and excited state atoms play an important role in low pressure rf capacitive argon plasma discharges. The ion-induced secondary electrons are accelerated by the high sheath field to strike the opposite electrode and produce a considerable number of secondary electrons that lead to additional ionizing impacts and further increase of the plasma density. Importantly, the presence of excited state species even further enhances the plasma density via excited state neutral and resonant state photon-induced SEE on the electrode surface. The PIC/MCC simulation results show good agreement with the recent experimental measurements in the low pressure range (1–10 Pa) that is commonly used for etching in the semiconductor industry. At the highest pressure (20 Pa) and driving voltage amplitudes 250 and 350 V explored here, the plasma densities from PIC/MCC simulations considering excited state neutrals and resonant photon-induced SEE are quantitatively higher than observed in the experiments, requiring further investigation on high pressure discharges.
The effect of Ag doping on the structure, optical, and electronic properties of ZnO nanostructures deposited by atmospheric pressure MOCVD on Ag/Si substrates
Authors: Ievtushenko A , Dzhagan V , Khyzhun O , Baibara O , Bykov O , Zahornyi M , Yukhymchuk V , Valakh M , Zahn D R T , Naumenko K , Zaremba P , Zagorodnya S 
Published: May 2023

Abstract
Atmospheric pressure metal–organic chemical vapour deposition was used to synthesize Ag-containing ZnO nanostructures of different morphology on Si substrates coated by Ag. Ag from Ag/Si substrates and Ag from silver acetylacetonate after its decomposition were used as a catalyst for ZnO nanocrystal growth for deposition of ZnO nanostructures with different morphologies. We investigated the relation of the structural parameters and chemical composition probed by x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), and Raman spectroscopy with the photoluminescence (PL) properties and electron–phonon coupling (EPC) reflected in the multi-phonon Raman spectra. The Raman and PL spectra were studied at different powers of the exciting laser radiation (P
exc). The spectral position and width of the phonon Raman peaks and the near bandgap PL band at low P
exc are supposed to be determined by the structural quality of the surfaces/boundaries of the crystallites. The intensity of the near-bandgap and defect-related PL and the magnitude of the EPC are additionally affected by the dopant concentration. Because of the large crystallite size (>30 nm, determined from XRD), the effects of phonon or electron confinement are negligible in these nanostructures. The behaviour of the position and width of phonon and PL bands with increasing P
exc indicates that the heat dissipation in the film, which is dependent on the nanostructure morphology and Ag content, plays an important role. In addition, the cytotoxicity of ZnO:Ag nanostructures was investigated by using monolayer cell cultures of epithelioid origin Madin-Darby bovine kidney and Madin-Darby canine kidney cells at a MTT assay revealing that the level of silver doping of ZnO nanostructures, their morphology, and geometric dimensions determine their toxic effects.
New approach to unimodular relativity
Authors: Tiwari S C 
Published: May 2023

Abstract
A thorough study and analysis on the conceptual foundations of unimodular gravity shows that this theory is essentially general relativity disguised as unimodular relativity in the literature. The main reason for this dilemma is accepting the Einsteinian paradigm: general relativistic framework, covariant divergence law for matter energy-momentum tensor, and cosmological constant as an integration constant, but introducing the artefact of unimodular description absent in Einstein’s work. A new approach is proposed in this paper in which pure unimodular relativity is defined in terms of equi-projective geodesics with the fundamental metric tensor having determinant unity and the geometric tensors constructed from them. Modification of covariant divergence law for the matter energy-momentum tensor is shown to have two new consequences. In the conventional unimodular gravity an effective cosmological term comprising of two variable scalar fields, namely, the unimodular geometric ambiguity and unimodular matter energy ambiguity, is proposed. A radical departure on the cosmological constant problem is possible assuming differing evolution of the two scalars: the Einstein equations emerge when the two ambiguities cancel each other. Secondly, in the case of pure unimodular relativity the gravitational field equations are proposed consistent with the unimodular space-time structure.
Propagation characteristics of dust density waves in an external magnetic field
Authors: Gogoi Niranjan , Das Nilakshi 
Published: May 2023

Abstract
Propagation of dust density waves (DDW) is theoretically investigated in a collisional plasma in the presence of an external magnetic field. The magnetic field is kept constant in a direction perpendicular to the direction of streaming ions, which is an important requirement for the self-excitation of these waves. Standard stability analysis is done to predict the conditions under which ion-drift instability may drive the DDW unstable. It is found that a minimum dust density is required to excite the wave. There exists a lower cut-off value of ion streaming velocity for the excitation of DDW which may change with the applied magnetic field and neutral gas pressure. The wave is found to behave complexly with the applied magnetic field and gets damped beyond a critical value. The results of this paper may be helpful in understanding the behavior of low-frequency dust modes as well as the background plasma both in laboratory and astrophysical environments.
Experimental study of electron cyclotron heating assisted start-up on J-TEXT
Authors: Zhang Junli , de Vries Peter C , Nagasaki Kazunobu , Xia Donghui , Jiang Wei , Yang Zhoujun , Cheng Zhifeng , Gao Li , Xu Xin , Wang Zhijiang , Wang Nengchao , Ding Yonghua , Chen Zhipeng , Chen Zhongyong , Pan Yuan 
Published: May 2023

Abstract
Second harmonic X-mode (X2 mode) electron cyclotron heating (ECH) assisted start-up has been studied experimentally on the J-TEXT device to determine the minimum ECH power requirements to assist breakdown and develop a better physical description of the process. Results indicate that the minimum toroidal electric field for a successful start-up on J-TEXT changed from

2.5

V

m

−
1

to

0.56

V

m

−
1

, and that injecting

300

k
W

of X2-mode ECH power can ensure robust breakdown. The critical ECH power for successful start-up was determined to be approximately

200

k
W

. At lower powers ECH was observed to cause ionization, but this did not necessarily result in successful start-up. The effects of varying ECH power, pulse-width and toroidal magnetic field on start-up were also investigated. Higher ECH power leads to quicker, stronger ionization and CIII emission, and is beneficial for burn-through. Higher pre-plasma density caused by high ECH power can decrease the required toroidal electric field for ohmic breakdown, while the enhanced CIII emission may not be good for start-up. The characteristics of the pre-plasma formed by ECH prior to application of the loop voltage were also studied. The toroidal magnetic field affects the initial location where pre-plasma forms and this also affected the subsequent tokamak start-up. The analysis of spatial density showed that the pre-plasma can radially develop at a velocity of

600

m

s

−
1

. Furthermore, it was found that injecting ECH power at the appropriate time with a low power of

150

k
W

can achieve similar pre-ionization results to the high-power case. The transition from ECH plasma to ohmic plasma suggests that the ECH assisted start-up modified the process of purely ohmic breakdown.
Study on Integrated Demand Response Strategy and System Coordination and Optimization of Park Integrated Energy System
Authors: Che Bin , Zhang Zelong , Yang Zhao , Zhang Weiqi 
Published: May 2023

Abstract
The need for flexibility in integrated energy systems is progressively becoming more demanding as these systems expand. Three types of demand response are introduced. An integrated demand response strategy is developed to address the situation based on an analysis based on the fundamental model of the Park Integrated Energy System. Additionally, the coordinated optimization model of the Park Integrated Energy System is created to minimize operational costs while considering a variety of restrictions.
Collaborative optimization method of the regional integrated energy system for energy cascade utilization
Authors: Fang Xin , Pan Yi , Yuan Xiaodong , Shi Mingming , Yang Jinggang , Sun Tiankui 
Published: May 2023

Abstract
Energy is an important resource, and its main reserves are obviously insufficient compared with consumption. The energy structure is mainly dominated by fossil energy. The pollution emissions from energy utilization are becoming more and more serious. The energy problem has seriously affected the development of new urbanization. This paper studies the optimal scheduling problem of typical urban integrated energy systems participating in different demand response methods. Based on the traditional power demand response model, the demand response model is constructed according to the equivalent thermal parameters. Its model can optimize the electricity and gas load curves and realize the balance of electricity, heat, and gas in an economical and environmentally friendly way. It can also reduce the total cost of the economic operation of the system and reduce the overall carbon emissions of the system. Through the optimization and regulation of multi-type “source-storage-load”, multi-time scale, and multi-objective joint for the distributed thermal power, the matching of thermal and electric hybrid energy and the peak and valley of the power grid can be realized.
Study on the Fitting Method of Power User Load Curve Under the Condition of Spot Operation
Authors: Du Xin , Min Rui , Liu Jian , Wang QiuHua , Zhang Lin 
Published: May 2023

Abstract
With the acceleration and deepening of the power market reform, the National Development and Reform Commission has issued power system reform documents to promote all industrial and commercial users to enter the power market. For the spot pilot area, the clearing and settlement time is required to be more accurate. Except for a few large industrial users, a wide range of small and medium-sized users and residents do not have the meter conditions for time-sharing measurement, and the investment in large-scale transformation of measuring equipment is huge, so the settlement basis must be obtained by fitting. This paper proposes a reverse derivation method of the user load curve. First, deducting the user curve with metering conditions from the load curve, and then calculating different types of user curves by adding weight coefficient fitting. At the same time, it proposes a method to deal with fitting deviation, which realizes the fitting of user curves without time-sharing meters, supports the needs of spot market settlement, and effectively promotes the entry of all industrial and commercial users into the market.
Research on Levitation Force Control of an Axial-flux Hybrid-Excitation Generator with PI-Based Torque Distribution
Authors: Chen Jiming , Xu Chongwang , Zhu Jingnan , Liu Jing 
Published: May 2023

Abstract
An asymmetric-primary axial-flux hybrid-excitation generator (APAFHG) has already been proposed to improve the starting performance of vertical axis wind turbines. However, the double-stator single-rotor structure causes a problem: different torque proportions create different rotor maglev forces, which will cause fluctuation and negatively impact the rotor bearing and even the operation of the wind power generation system. Therefore, a mathematical model considering the double-stator single-rotor structure and a proportional integral-based torque control strategy considering double-stator distribution are proposed in this paper to help APAFHG offer a good starting performance in vertical-axis wind power generation system and to stabilize maglev force generated by double-stator quadrature axis current simultaneously. Finally, the cooperation control of the maglev force and torque distribution is realized in MATLAB/Simulink, and the rotor maglev force will be relatively stable despite mechanical torque changes, which is a basis for the wind turbine to stably operate as the wind constantly fluctuates in vertical axis wind power system.
The Virtual Data-sampling Method Based on Optimal DBN for High-Scale Distributed Photovoltaic Power Generation
Authors: Zhang Hua , Li Shilong , Ding Lijie , Liu Chang , Xie Tianxiang , Huang Yan 
Published: May 2023

Abstract
In a distribution power grid with a high proportion of distributed photovoltaic (DP) connections, the real-time acquisition of the distributed photovoltaic power generation data is a costly and heavy task. In this paper, a virtual data sampling method based on Deep Belief Network (DBN) combined with a Second-order oscillating-firefly algorithm (SOO-FA) is proposed. It enables virtual data sampling from all distributed PV plants in a region where only one distributed PV plant has a complete data-sampling device and the other distributed PV plants have less expensive current sampling terminals. The firefly algorithm is utilized to continuously adjust and optimize the weights of the deep belief network, and the optimal DBN model is used to carry out the virtual collection of the power output data of the distributed PV equipment within the region. Finally, the proposed method has high accuracy for the PV output power by 100 distributed PV devices in the regional range in the simulation section.
Research on RIS-assisted PMU Short Packet Communication for Active Distribution Networks
Authors: Han Xiao , Li Shuanghou , Wang Dong , Liu Jinlong , Yu Jiao , Zhang Yang 
Published: May 2023

Abstract
Phasor measurement unit (PMU) has been widely applied in power grids. For these applications, there is usually a high requirement for data transmission delay and reliability; therefore, short data packets are often used for transmission. Therefore, a downlink communication model for reconfigurable intelligent surface (RIS) assisted multi-PMU is proposed in the paper. We propose a joint optimization problem to maximize the total achievable system rate. Finally, an alternate iterative algorithm based on SCA is proposed. The results show that the proposed algorithm can effectively improve the sum rate.
A positive and negative sequence current measuring device and method based on an electric energy metering platform
Authors: Xia Wu , Liu Youqiang , Tian Xianggui , Qin Xiankun , Shen Diqiu 
Published: May 2023

Abstract
At present, the current positive and negative sequence extraction methods are all based on high-performance analog-to-digital converters and need high-performance microprocessors. Or the negative sequence current measurement circuit is constructed using an analog operational amplifier, and the phase shifting method is used to achieve the measurement purpose. The above methods need to be implemented by chips with high computing power. They even need to build an additional positive sequence current measurement circuit, which makes the circuit more complex and cost-effective. This paper proposes a positive and negative sequence current measuring device and method based on the electric energy metering platform. Through the external phase, the current access device is to be measured using the power measurement value formed by the voltage channel, current channel, and multi-function measurement channel corresponding to the single-phase metering chip of the measurement unit, the included angle of phase current can be calculated, thus realizing the calculation of positive and negative sequence current. It avoids using high-performance analog-to-digital converters, effective value, frequency tracking, phase measurement, and other complex algorithms, reduces the computational requirements for MCU master chip, and reduces the development difficulty and cost.
Vibration Fundamental Frequency Amplitude Prediction of Electric Transformer by Proposed Hybrid Artificial Bee Colony Method
Authors: Wang Jianping , Li Wanlin 
Published: May 2023

Abstract
Existing research express by processing about the vibration signal of electric transformer cover, the corresponding fundamental frequency amplitude can be obtained, which can be used to dig the specific operation state of the electric transformer. For accurately predicting the amplitude at the fundamental frequency about cover vibration signal of electric transformer, a proposed method based on artificial bee colony is designed. But the basic artificial colony method has some defects, such as slow tracking speed and poor feature description ability. Therefore, in view of the shortcomings of the existing ABC based method, the proposed artificial bee colony method is designed, where an adversarial learning mechanism and optimizing each specific search formula is employed. The proposed ABC method improves the prediction accuracy of electric transformer cover vibration signal’s fundamental frequency amplitude. The sepcific results of experimental introduce the effectiveness of the proposed ABC method.
Analysis of magnetic field characteristics and no-load losses of three-dimensional wound core transformer
Authors: Li Min , Yao Wei , Gao Xin , Liu Cong 
Published: May 2023

Abstract
Three-dimensionally wound core transformers (TWCTs) are widely used because of their low iron loss. This paper investigates the triangularly arranged TWCT core structure and a conventional planar laminated core transformer’s flat “E” core structure (PLCT). First, the magnetic field structures of the two transformers are analyzed using the equivalent magnetic circuit method to study the symmetry of the three-phase reluctance. Then, using the finite element method, a three-dimensional simulation model was built to analyze the no-load performance of TWCT and PLCT with the same dimensional parameters and the same core material. The no-load flux of each coil, the induced voltage on the secondary side, and the no-load iron loss of the core are analyzed. The analysis results show that TWCT has a 7.48% lower no-load loss than PLCT, which verifies the superiority of TWCT in terms of no-load loss.
Research on the Influence of Wind Power Access on Voltage Stability of Distribution Network
Authors: Gao Chen , Feng Ruming , Wang Yuqiang , Yan Xu , Wu Xiaoqian , Han Tao , Li Qi 
Published: May 2023

Abstract
This paper proposes a voltage stability index suitable for distributed generation and distribution network which is derived by using the relationship between power balance and voltage balance and the impact of wind power access location, access capacity, and fault on the voltage stability. The results show that the shorter the length and the larger the wind power capacity, the more obvious its role in supporting the distribution network voltage. But the greater the negative impact of wind power’s instability on the distribution network voltage, the above factors must be comprehensively considered in network planning.