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Portfolio investment is the core of all kinds of investment activities in the financial market, is an investment decision under uncertain conditions, is an important branch of the economic field. The portfolio is a common way to avoid risk. A portfolio is generally considered to be a combination of bank...

This paper analyzes the research status of online teaching, especially the demand for offline teaching in the context of epidemic situation. According to the teaching practice of “Introduction to Airworthiness”, the reform and practice of “three progressive” teaching mode of “before class, during class...

As gender diversity is increasingly valued in corporate governance, we investigate the impact of board gender diversity on corporate cash holdings. We infer a positive correlation between board gender diversity and corporate cash holdings. Combining single factor analysis and baseline regression analysis,...

A Reconfigurable Optical Add-Drop Multiplexer (ROADM) is an optical add-drop multiplexer that can remotely switch user’s traffic. This optical network considered input power for the project’s first stage by implementing a 4-channel Dense Wavelength Division Multiplexing (DWDM) system. The resulting outputs...

This paper investigates the predictive return power of three asset pricing models during market turmoil: the CAPM, Fama-French 5 factor model, and q-factor model. We select two periods of market downturns: the 2008 financial crisis and the 2020 Covid period. The models are trained before these two periods...

Autonomous robotic systems have gained significant attention due to their potential applications in industrial automation, surveillance, logistics, and assistive technologies. This paper presents an Intelligent Robotic System that integrates multiple AI-driven techniques, including You Only Look Once...

In order to enlarge the application scope of the existing criteria for the heat transfer deterioration, the criteria of heat transfer deterioration was assessed by using the method of mechanism analysis and experimental data available in the literature. The obtained results indicated that the criteria...

Complex q-rung orthopair fuzzy set (CQROFS) contains the grade of supporting and the grade of supporting against in the form of polar coordinates belonging to unit disc in a complex plane and is a proficient technique to address awkward information, although the normal fuzzy number (NFN) examines normal...

Based on polynomial secret sharing, we construct a robust forward-secure threshold signature schemes. This scheme have the following property: even if more than the threshold number of players are compromised, it is not possible to forge signatures relating to the past. This property is achieved while...

"Yellow Emperor Internal Classic" is also called "Nei Jing" and establishes the basic framework for the system of traditional Chinese medicine theory. It plays a decisive role in the Chinese classics. "Nei Jing" takes use of refined language, reflecting the rich cultural flavor, its value and the value...

Theoretical line loss calculation is the basis for line loss analysis, and reduce the time of calculating the theoretical line loss can improve the efficiency of the line loss analysis.This paper,aiming at the wasted issue in power transmission,presents a theoretical line loss calculation framework that...

The purpose of this research is to examine whether the effectiveness of Indonesian government policies dealing with the pandemic. The method used in this study is the Literature review method. The result of this study shows that people who can’t afford to get the covid test, a hospital that can’t be...

The purpose of Research teaching is to train students in learning and capacity of innovation. This paper, based on the Bayes formula, discusses the design and practice of the case under the research-oriented teaching. Combining knowledge, we designed cancer diagnosis, automatic text correction, business...

This research involves a history teacher at a high school in Manado city who already has an Educator Certificate, with a focus on research problems related to how the efforts of teachers to carry out their roles and functions in history learning during the last two years during the Covid 19 Pandemic....

The article deals with the stress-strain state of layered composite of rectangular section under tension by distributed uniform normal load q. Interaction between layers is accomplished by the contact layer in which is mixed the substances of adhesive and the substrate.

The q-rung orthopair fuzzy set (qROFS) defined by Yager is a generalization of Atanassov intuitionistic fuzzy set (IFS) and Pythagorean fuzzy sets (PyFSs). In this paper, we define the knowledge measure for qROFS by using the cosine inverse function. The information precision and information content...

Digital nucleic acid amplification and determination has become an attractive technique by its capable of high sensitivity and precision. With the development of microfluidic technique, this method becomes much easier to perform, with less sample requirement and cross contamination. The dynamic range...

As a modification of the q-rung orthopair fuzzy sets (QROFSs), complex QROFSs (CQROFSs) can describe the inaccurate information by complex-valued truth grades with an additional term, named as phase term. Cosine similarity measures (CSMs) and distance measures (DMs) are important tools to verify the...

Under the influence of the socio-economic system, financial development and rising house prices are no longer two separate issues. For a specific regional environment, financial development will, to a certain extent, suppress the rising trend of house prices and contribute to the stable development of...

TSZ-6A type strain control triaxial compression apparatus is applied for indoor test of some soil samples in Gansu Longdong (Qingyang) loess landslide, unconfined shear test of undisturbed soil samples, and the loading and unloading test of loess remodeling. The influences of different moisture content...

According to the characteristics of double fed asynchronous generator rotor energy flow, research and design based on the DSP control with two-way flow of energy function of Dual PWM converter and discusses the grid side converter control method of Dual PWM converter in particular. The wind turbine simulation...

To solve the channel selection issue in opportunistic spectrum access, a new Q-Learning based algorithm for channel selection is proposed. The algorithm can lead secondary user to select channels with maximum cumulative reward, and maximize secondary user throughput. A Boltzmann learning rule is adopted...

From the historical data of “the bed scour by hyper-concentrated flow” flood the whole sediment and middle size coarse sediment discharge ratio of SanMenxiareservoir is smaller in the stage of flood detention and open discharge. The flood peak is inharmonious with the sediment peak and the carrying capacity...

A graph is symmetric or arc-transitive if its automorphism group acts transitively on vertices, edges and arcs. Let p, q be odd primes with p, q 5 and X a q-valent symmetric graph of order 4p. In this paper, we proved that X K4p with 4p-1=q, X K2p,2p-2pK2 with 2p-1=q, the quotient graph of X is isomorphic...

Picosecond laser was employed to drill through holes on alloy of GH2132 by helical technique.The effects of repetition rate and processing time on the qualities of through holes were investigated.Morphology of holes of irradiated areas were analyzed by scanning electron microscope(SEM).The results indicated...

People pay more attention to the green house recently, but the study of green building investment project decision-making is not enough. Considering the interaction between the attributes, Shapley function is used to determine the attribute weights, the integrated value is calculated using IG-IVIFHSA...

As a new protection, wide-area protection enables protective relaying, and automatic control based on electric power system network communications and comprehensive judgment of multi-point information, which plays an increasingly important role in the secure and stable operation of electric power system....

The rapid expansion of internet-connected devices and IoT infrastructures has significantly increased the scale and sophistication of botnet attacks, making them a major threat to modern digital environments. Traditional signature-based and heuristic detection systems struggle to identify evolving, stealthy,...

Agricultural talent education is a characteristic of the current development of agricultural modernization in China, and it is the core mode of agricultural economy that combines emerging digital technology with the agricultural production. Modern agricultural talents are the key to supporting the development...

In this paper, Applying the theory of Nevanlinna, we investigated uniqueness problem of difference polynomial of meromorphic functions and obtained uniqueness theorems of meromorphic functions , which Extended and improved the results of literature[5].

The inverted pendulum is a multivariable, rapid, nonlinear unstable system. LQR optimal control is often used in inverted pendulum control for its good stability. According to optimal determination problem of the weighting matrix Q and R in LQR, an improved hybrid genetic algorithm is adopted in LQR...

Drug dust is often produced in pharmaceutical workshop process such as ingredients, grinding, granulating, packaging and tablet. Due to the chaotic spread of dust, workers' health and the safety of the surrounding environment are affected. When the dust concentration reaches a certain value burning explosion...

The notions of complex q-rung orthopair fuzzy sets (Cq-ROFSs) and linguistic sets (LSs) are two different concepts to deal with uncertain information in multi-attribute group decision-making (MAGDM) problems. The Heronain mean (HM) and geometric Heronain mean (GHM) operators are an effective tool used...

The development of MOOCs provides a broader space for online courses. Students learn the curriculum in the form of MOOC mainly reflected in course descriptions, course delivery, text messages, picture messages, audio-visual information, job correcting, Q & A forums and other aspects. This paper presents...

This thesis is about the dynamic control of a permanent magnet assisted reluctance synchronous machine (PMA RSM).The PMA RSM in this thesis is a 110 kW traction machine and is ideal for the use in electrical rail vehicles. For accurately analyzing the dynamic characteristics paper is of the of a permanent...

The purpose of this article is to identify and analyse several key references about social media marketing and brand awareness. This study is a systematic literature review using the Scopus through Harzing Publis or Perish. Then the data were analyzed using software Microsoft Excel, Mendeley and Vos...

Technology forecasting plays a fatal role for enterprise survival and development. Technology maturity of thermostat is predicted with the TMMS and patent data algorithms. Radar plot is drawn to indicate the evolutionary potential for the further improvements of thermostat. It is pointed out that thermostat...

At the two embedded solid depth, research on the displacement, bending moment and shear stress of micro-pile composite structure have been studied based on the FLAC3D program. Results show that: micro pile maximum bending moment occurs in the vicinity of the sliding surface, the maxi-mum shear stress...

In wireless sensor network, the existing reinforcement learning routing algorithm usually optimize single goal and the process of route establishment is complex. It also has problem of data forwarding control overhead. In this paper, we present a dynamic adaptive routing algorithm with feedback learning...

Existing studies of online discourse in China had primarily focused on the government’s control and censorship of online content and their sociological implications, and not enough emphasis had been placed on self-censorship, especially when it pertains to the individuals’ interaction with the knowledge...

The delay precision of common detonator is not good, the actual time delay often have big difference with blasting design in real blasting engineering, and the blasting effect is difficult to control. While high precision digital detonators are instead of chemical drugs by original electronic control...

This paper provides an in-depth study of the relationship between series compensation network and system power loss, and the efficient transmission efficiency of wireless energy transmission systems.In this paper, the S-S series compensation network is taken as an example, and by studying the characteristics...

Quality evaluation of bridges stopped building for a long period in highway extension projects is not only critical to re-recognize quality (precondition for follow-up construction) but to adopt treatment measures for bridges. Nevertheless, studies on this issue are quite few at home and abroad so far....

In recent years, with the development of new media, the micro-blog, WeChat, QQ, Q&A community and other pan-network products have become the main way for network users to exchange information. These new media platforms are convenient for users, but followed with obvious information ecological problems,...

Portfolio theory provides an important conceptual foundation and a comprehensive set of analysis systems for portfolio creation and analysis, and it has a significant impact on modern investment management practice. The rationality of portfolio theory on decentralized investing is a critical theoretical...

This paper introduces a kind of receiver that can receive signal which weak to UV level. First, the common mode rejection for the input differential signal is necessary, and a low noise amplifier followed by. Then we should let the signal go through a Programmable filter whose center frequency, Q are...

Nowadays, food safety has drawn increasing attention because of its importance, yet the cost spent on food forgery prevention is expensive and the system is hard to maintain, therefore a low cost system is worth developing. Based on the above fact, this paper proposes a system design for food forgery...

The total nitrogen (TN) concentration of Datong Lake has exceeded the standard concentration due to some artificial causes. Inflow from channels may be an effective method to help lower TN concentration and improve water quality. In this paper, a lake-channel network numerical model is set up for Datong...

The purpose of this article is to identify and analyze several references on the keyword’s leadership and ethical leadership. Through Harzing’s Publish or Perish, a systematic review of the literature was undertaken for this study utilizing the Scopus database. Using the SPAR-4-SLR Protocol, the data...

The downstream is in the lower reaches of the Heihe River, northwestern China. The first step of the model development effort is to construct a groundwater flow model for the lower Heihe River. The software ‘ModelMuse’ is used to build and visualize the model for the downstream of Heihe River. A groundwater...