What Matters Now: How to Win in a World of Relentless Change, Ferocious Competition, and Unstoppable Innovation

Information Security Risk Assessment: Risk Assessment

The risk assessment methods of agricultural supply chain finance (SCF) are explored to reduce agricultural SCF’s credit risks. First, the genetic algorithm (GA) is utilized to adjust and determine the initial weights and thresholds of the backpropagation neural network (BPNN), which assesses the credit risks. Second, for the problem that many factors affect the credit risks and the difficulty in selecting the characteristics, the principle of assessment indicator selection is proposed; the characteristics of these indicators are selected by principal component analysis (PCA). Finally, the case analysis method is utilized to verify the proposed risk assessment method, and an optimal credit risk assessment method is established. The results show that GA-BPNN can accelerate the convergence speed of the BPNN and improve the disadvantage in easily falling into the local minimum of BPNN. The PCA method simplifies the complexity of assessment indicator selection, and the representative indicators in agricultural SCF credit risk assessment are successfully selected. Through verification, it is found that the GA-BPNN algorithm performs well in credit risk prediction of agricultural SCF, and its prediction accuracy and prediction speed are improved. Therefore, the used GA-BPNN has performed well in the credit risk prediction of agricultural SCF, which applies to financial credit risk assessment to reduce the credit risks in agricultural SCF.

The Analysis of Credit Risks in Agricultural Supply Chain Finance Assessment Model Based on Genetic Algorithm and Backpropagation Neural Network

Innovative mobile money services have grown tremendously in the East African market. While there are positive effects of technology-enabled financial inclusion, risks exist. This study sought to strengthen the capacity of technology risk management by proposing practices and strategies that can protect the financial technology ecosystem. Applying the ISACA Risk IT Framework, data was collected in June 2019 from the leading digital lenders in Kenya. The study found that while regulated mobile lenders have an IT risk management environment that is viewed as a critical success factor, unregulated entities have minimal integration of IT risk management essentials. This study is useful to many developing countries where governments are working towards having secure and strong financial systems that contribute to the Millennium Sustainable Development Goals. Regulators and practitioners must ensure the financial technology lending ecosystem is protected from risks that could reverse gains made from witnessed developments in financial inclusion.

Strengthening technology risk management in mobile money lending

Cavity optomechanical coupling based on radiation pressure, photothermal forces and the photoelastic effect has been investigated widely over the past few decades, including optical measurements of mechanical vibration, dynamic backaction damping and amplification, nonlinear dynamics, quantum state transfer and so on. However, the delicate cavity operation, including cavity stabilization, fine detuning, tapered fibre access etc., limits the integration of cavity optomechanical devices. Dynamic backaction damping and amplification based on cavity-less exciton optomechanical coupling in III-V semiconductor nanomechanical systems, semiconductor nanoribbons and monolayer transition metal dichalcogenides have been demonstrated in recent years. The cavity-less exciton optomechanical systems interconnect photons, phonons and excitons in a highly integrable platform, opening up the development of integrable optomechanics. Furthermore, the highly tunable exciton resonance enables the exciton optomechanical coupling strength to be tuned. In this review, the mechanisms of cavity optomechanical coupling, the principles of exciton optomechanical coupling and the recent progress of cavity-less exciton optomechanics are reviewed. Moreover, the perspectives for exciton optomechanical devices are described.

From cavity optomechanics to cavity-less exciton optomechanics: a review.

In nowadays, the trend of the economic globalization is increasing evidently. Without exception, all of the global banking industries take information technology as a necessary condition for survival in the future and the core of the competition. Aimed at two risks, ‘operational risk’ and ‘compliance risk’, which commercial banks data center must face to, this article constructs a risk management system, represents a management style of ‘One management framework, One set of risk baseline, Three kinds of control methods, Three improvement mechanisms’, establishes risk baselines as the basic of risk management, consolidates risk assessment experience, raises the standardization level of the risk assessment, improves risk baselines with continuous effort to adapt the updated security environment, identifies operational risk and compliance risk comprehensively within the unified management framework, achieves risk management standardized and sustainable, provides strong support to the commercial bank on the development and robust operation around the whole world.

http://www.sersc.org/journals/IJSIA/vol10_no3_2016/23.pdf

Overview of Risk Management System of Commercial Bank Data Center

Moiré patterns in physics are interference fringes produced when a periodic template is stacked on another similar one with different displacement and twist angles. The phonon in two-dimensional (2D) material affected by moiré patterns in the lattice shows various novel physical phenomena, such as frequency shift, different linewidth, and mediation to the superconductivity. This review gives a brief overview of phonons in 2D moiré superlattice. First, we introduce the theory of the moiré phonon modes based on a continuum approach using the elastic theory and discuss the effect of the moiré pattern on phonons in 2D materials such as graphene and MoS2. Then, we discuss the electron–phonon coupling (EPC) modulated by moiré patterns, which can be detected by the spectroscopy methods. Furthermore, the phonon-mediated unconventional superconductivity in 2D moiré superlattice is introduced. The theory of phonon-mediated superconductivity in moiré superlattice sets up a general framework, which promises to predict the response of superconductivity to various perturbations, such as disorder, magnetic field, and electric displacement field.

Review of phonons in moiré superlattices

Cavity optomechanical systems operating at the quantum ground state provide a novel way for the ultrasensitive measurement of mass and displacement and provide a new toolbox for emerging quantum information technologies. The high-frequency optomechanical devices could reach the quantum ground state at a high temperature because the access to high frequency is favorable for the cavity optomechanical devices to decouple from the thermal environment. However, reaching ultra-high frequency (THz) is extremely difficult due to the structure of cavity optomechanical devices and properties of materials. In this paper, by introducing acoustic topological interface states, we designed a THz mechanical frequency semiconductor pillar microcavity optomechanical device based on a GaAs/AlAs nanophononic superlattice. In the optomechanical system, multi-optical cavity modes are obtained and the frequency separation between adjacent optical modes is equal to the frequency of the mechanical mode (optomechanical frequency matching). By detuning the laser pump to a lower (higher) energy-resolved sideband to make a spontaneously scattering photon doubly resonate with optical cavity modes at an anti-Stokes (Stokes) frequency and pump frequency, we can achieve an anti-Stokes (Stokes) scattering efficiency 2600 (1800) times larger than that of Stokes (anti-Stokes) scattering, which provides potential for laser cooling and low threshold phonon lasing in the optomechanical system.

Terahertz cavity optomechanics using a topological nanophononic superlattice.

The outbreak of the Covid-19 caused the emergence of many related pandemic prevention policies, which evidently influenced the demand and supply sides of the agricultural products and may therefore make the relative products’ price fluctuate. This paper chooses the egg price in Henan province in China as a detailed situation to do the empirical research by using vector autoregression model (VAR), and try to find out the relationship between egg price volatility and the number of indigenous confirmed Covid-19 cases, Granger causality Wald test is also used in order to test the causal relationship between these two factors. We find that the fluctuation of egg price in Henan province was not positively related to the number of confirmed pandemic cases, but has the positive relationship with the supply of the eggs. Our findings suggest local governments should place much emphasis on ensuring stability of the supply side of the agricultural products in times of crisis.

A VAR analysis for the impact of Covid-19 on egg price fluctuation in Henan province in China

Diamond is generally considered to have high thermal conductivity, so little attention has been paid to the laser heating effects at low excitation power. However, defects during the growth process can result in a great degradation of thermal conductivity, especially at low temperatures. Here, we observed the dynamic redshift and broadening of zero phonon line (ZPL) of silicon-vacancy (SiV) centers in diamondin the experiment. Utilizing the intrinsic temperature response of the fine structure spectra of SiV as a probe, we confirmed that the laser heating effect appears and the temperature rising results from high defect concentration. By simulating the thermal diffusion process, we have estimated the thermal conductivity of around 1 W/(mK) at the local site, which is a two order magnitude lower than that of single-crystal diamond. Our results provide a feasible scheme for characterizing the laser heating effect of diamond at low temperatures.

Zhenyao Li

Papers

Overview of Risk Management System of Commercial Bank Data Center

Review of phonons in moiré superlattices

Terahertz cavity optomechanics using a topological nanophononic superlattice.

A VAR analysis for the impact of Covid-19 on egg price fluctuation in Henan province in China

Local laser heating effects in diamond probed by photoluminescence of SiV centers at low temperature