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Naor and Shamir proposed an optimal (k, k visual cryptography scheme (VCS). Droste extended the (k, k) scheme to (k, n) scheme. Based on properties of 0 and 1’s permutations of basic matrices, we use basic matrices of the (k, k) scheme to constrict basic matrices of (k, k+1) scheme.

A new asymmetrical photochromic diarylethene, 1-(2-methyl-3-benzofuryl)-2-(2-methyl-5-naphthyl-3-thienyl)perfluorocyclopentene (1o) was synthesized, and its photochromism and fluorescence properties were studied in detail. Upon irradiation with 297 nm UV light, the colorless 1o changed to violet both...

The re-actualization of the Sandur theatre is intended as a series of processes to refresh the Sandur traditional theatre into a theatre form with modern performance management methods and principles so that it is possible to contribute to multicultural education. The actualization of the form of Sandur’s...

The system of time-to-digital conversion is based on the Field Programmable Gate Array (FPGA)[1], compared with the TDC system existing now, the innovation of this design is can measure the width of the continue pulses. This system is designed on the Spartan-6 platform of the Xinlinx company. There are...

We prepared five heteropolyacid catalyst by one-pot method, the reaction temperature was 65oC, reaction time 8h, hydrogen peroxide 3mL, naphthalene 1000mg, H4PMo11VO40 100mg, naphthalene conversion was 30.3%,the selectivity of naphthol was 46.7%. The heteropoly acids have Keggin structure, but also have...

New free radical-cationic hybrid photopolymer, consisting of acrylate-based and epoxy-based photosensitive resin for stereolithography was prepared. The influence of the initiator sort and amount on the curing degree of the photopolymer was investigated. Photopolymerization process, degradation temperature,...

The daily precipitation data, from 1962 to 2012, of 20 relative meteorological stations in the Northern part of Haihe River Basin (NHHRB) were collected and analyzed to test the spatial variation and evolution trend of the extreme precipitation in NHHRB. Eight extreme precipitation indexes were selected...

Deleting the average class of constant false alarm rate monitoring (CMLD - CFAR) ,which bases on an average constant false alarm rate monitoring(CA - CFAR) ,can not only overcome the ML type detector under the background of multiple targets detection problem of poor performance, but also address the...

This research aims to analyze the role of literature in breaking down gender stereotypes and fighting for equality. The subject matter raised is how literature can function as a critical tool in opposing and changing social norms that limit gender roles. The research method used is qualitative research...

Mined-Out Area Saturated by Water is a serious threat to the safety coal-mining practices. This research focuses on detecting mined-out area saturated by water with transient electromagnetic method. Data acquisition system was arranged along 65 survey lines, and the total of 4830 survey points were recorded....

Under the impact of the information technology revolution, the mobile Internet to "moisten things silently" gesture quietly changing the traditional education model, and even subvert the traditional classroom teaching, prompting people to think to find a new classroom teaching. So it appeared buzzwords...

Nano-sized samarium doped ceria (SDC) material was synthesized through a sol-gel method in order to improve the intermediate-temperature performance of solid electrolyte for automobile oxygen sensor. The ionic conductive behavior of the electrolyte was analyzed on the basis of electrochemical impedance...

Based on the Chinese local chronicles, this article adopts a literature analysis method. From the perspective of environmental history, it discusses corn, sweet potatoes and potatoes at different times and was introduced for the purpose of economic development and the solution of famine, because of population...

Researches on intimate partner violence (IPV) mostly focus on heterosexual relationships. Whereas, it is undeniable that conflicts also occur in same-sex relationships and have a relatively high prevalence. Same-sex IPV (SS IPV) may have certain characteristics that are unique or different from different-sex...

Design of a 10:1 multiplexer in 0.18µm CMOS technology is presented in this paper. This circuit can be used in 12.5Gb/s SerDes transmitter. The speed of traditional 10:1 is difficult to enhance due to the serial 5:1 part. In this paper, 5B/4B converter is adopted to convert the 10 channel data into 8...

The airport security inspection network model based on the Petri Net is established to identify the bottleneck of the airport security inspection system. A reach ability graph is set up to represent the process of the security inspection. We can get an isomorphic Markov Chain by simplifying the reach...

Some new heterogeneous catalysts used to synthesize the tributyl citrate (TBC) and aspirin were prepared and characterized by brunauer-emmett-teller (BET), field emission scanning electron microscope (FE-SEM) and X-ray diffraction (XRD). The effect of temperature, catalyst loading and the concentration...

This paper proposes a method of mechanical performance prediction of cold rolled ribbed steel bars based on BP neural network with whole variable space. It builds a whole variable space model and studies the mechanical performance prediction of cold rolled ribbed steel bars based on the 5-in & 1-out...

The paper applies several business models such as Porter’s Five Forces, Value Chain, and BCG’s Matrix to analyze the overall performance of METRO AG under the condition of Covid-19 to solve the problems of whether METRO is still worthy of investing. This paper also applies financial analysis with an...

At present, with the rapid development of science and technology in China, “Made in China” is moving toward “Made in China”. Under the background of 5G era, the rapid rise of high-tech enterprises in the Guangdong-Hong Kong-Macao Greater Bay Area has further accelerated the development process of “Made...

Based on the input and output data of eight high carbon industries in Hebei, Inner Mongolia, Shaanxi, Shanxi and Ningxia from the year of 2003 to 2011, this paper used Malmquist-Luenberger Productivity Index to estimate the green productivity and its decomposition. According to the empirical analysis...

The dispersion behavior of graphene oxide and graphene oxide quantum dots in different organic solvents has been investigated. When these dispersed solvents were placed for one year, as-prepared graphene oxide were seen to exhibit long-term stability in three solvents (ethylene glycol, N,N-dimethylformamide...

This paper first analyzes the impact of ESG performance on the companies themselves from the perspective of the companies and investors to May 2020 Shenzhen created the GEM has 74 companies, using regression models to analyze the impact of compensation management mechanisms on company performance and...

“Today the press has really become a national estate; more powerful than any other estate, even more so than the aristocracy.” —Henry Reeve in <Edinburg Review>[1] This paper examines the impact of media and international opinion warfare on geopolitical crises, with a particular focus on the role...

The engine friction loss and vehicle fuel economy aiming at several kinds of energy-conserving engine oils with different quality standard, viscosity grade, friction modifier, and viscosity index improver were tested in this paper. Experimental results showed that the engine friction loss was reduced...

COVID-19 is an infectious disease caused by virus SARS-CoV-2 virus. Early classification of COVID-19 is essential for disease cure and control. Transcription-polymerase chain reaction (RT-PCR) is used widely for the detection of COVID-19. However, its high cost, time-consuming and low sensitivity will...

The paper analyzes the current teaching situation of the course “Computer Composition Principles” from the perspective of “student-centered, output-oriented and continuous improvement”, and designs the “1-3-2-1” hybrid teaching organization model based on the engineering education accreditation. The...

The enrollment expansion of higher vocational education is a new requirement put forward by the state to relieve the employment pressure, which is both an opportunity and a challenge for vocational colleges. Under the background of expanding enrollment, this paper discusses the organic combination of...

By using of field observation and room analysis, the characteristics of evapotranspiration of three forest types beside Songhua River were studied through measure forest land evaporation and forest transpiration. The results showed that: (1) Forest land evaporation of Fraxinus mandshurica- Populus davidiana...

According to the national standard Minimum allowable values of energy efficiency and energy efficiency grades of commercial refrigerating appliances—Part 1: Refrigerated display cabinets with remote condensing unit and GB/T21001-2007 Refrigerated Display Cabinets, this paper illustrates the design of...

0-1 knapsack problem is a typical NP complete problem. In this paper, based on the bat algorithm, combined with the idea of genetic variation, the paper introduces the processing rules of the active evolutionary operator, invalid bat and the current optimal position. The simulation results show that...

In order to study the pollution level and leaching characters of the heavy metals in the soil of lead-zinc mining area, soil sample in a lead and zinc mine of Hunan is taken as study object. The concentration of heavy metals was analyzed byinductively coupled plasma massspectrometry after microwave digestion...

Body has an important meaning for commercial sex workers (CSWs). The body becomes the main capital to attract and attract customers. Having a beautiful and awake body is a special attraction to maintain existence in the world of prostitution. The focus of this study describes the pattern of body care...

As a refractory metal, zirconium has a wide range of applications in many fields. The method of electrode position to produce metal zirconium is more available, it is important to study the behavior of zirconium in the molten salt. The electrochemical reaction mechanism and electrocrystallization process...

Taking the finished product warehouse of precision casting enterprise as the research object, the traditional warehouse business process is investigated and analyzed, and the warehouse business process model based on Petri net is established. The reachability tree method is used to analyze the network...

The sustainability of democracy in maritime and archipelagic regions depends on the effectiveness of political governance systems that ensure transparency, accountability, and institutional integrity. In countries such as Indonesia, where geographic fragmentation intersects with political complexity,...

With the growth of social economy, more and more high to the requirement of animal husbandry.With the brisk development of pig raising production, we have realized that how to improve the effectiveness of pig raising, disease warning and prevention is of great significance. In this research, by applying...

Leakage of oil and petroleum products can cause serious soil pollution. Traditional monitoring method for soil petroleum hydrocarbon pollution finds it difficult to diagnose a large area of soil contaminated area, while visible and near infrared (VNIR) spectroscopy technology boasts advantages like fast...

On this basis, according to the actual needs of enterprises, the enterprise management accounting system is optimized. Through the research of Drools rules engine, the development of management accounting system based on Drools rules engine is realized, and the software architecture of the system is...

Artificial intelligence (AI)-driven big data analysis, algorithms and computing power introduce new thinking models and decision-making methods for social science research, reconfigure the research paradigm, and thus enhance the depth and breadth of understanding of social phenomena and the laws of social...

This paper proposes asymmetric cascaded multilevel inverter with unequal dc-link voltage ratio. Meanwhile, it’s proved when asymmetric topology with dc-link ratio of 1:2:4, the output voltage level can be maximized with the same number of devices. For this kind of topology, this paper designs the corresponding...

The electrochemical reaction mechanism and electro crystallization process of hafnium in the NaCl-KCl-NaF-HfO2 molten salt were examined at 973K by means of cyclic voltammetry, chronopotentiometry, and chronoamperometry techniques. The results show that the electrochemical reduction mechanism of hafnium...

The business tax is a kind of tax collected by total business turnover derived from the provision of taxable services, the transfer of intangible assets and the sale of immovable property in China, while the value-added tax (VAT) is a kind of turnover tax levied on the increase in the value of goods...

This paper analyzed the annual change and seasonal variation of Cd in Jiaozhou Bay during 1979-1983. Results showed that the highest values of Cd contents in 1979-1982 were confirm to Grade I (1.00 g L-1) of National Sea Water Quality Standard (GB 3097-1997), yet in 1983 were Grade II. For temporal changes,...

Sexual abuse towards children may cause psychological, physical, and social trauma. This study focuses on self-recovery attempts of victims after being sexually abused. Phenomenology design referring to Creswell perspective as knife analysis was utilized. The data were obtained by doing an in-depth interview...

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...

In this paper, we model a metric for measuring the success of smart growth of a city and apply it to a mid-size cities. In the first step, we develop a metric A to measure the success of smart growth of a city using Analytic Hierarchy Process, including 5 facets: Intelligent development level, economy,...

A genome-wide association analysis (GWAS) based on the research results, the local gene networks a preliminary establishment of susceptibility genes of type 2 diabetes mellitus, for future gene-gene interactions, provides reference for the research on gene environment interaction. 65 candidate genes...

Klitih is a form of juvenile delinquency by fighting, throwing stones, injuring and even killing victims in Yogyakarta. Various attempts have been made by the government, educational institutions and the police to overcome them. This paper discusses the strategy of Geng Klithih in avoiding police capture....

The purpose of this study is to 1) describe the use of the small talk ‘Ayo Makan!’ in the context of daily communication, and 2) describe the response to the small talk ‘Ayo Makan!’ in the context of daily communication. Gossip is one of the cultural approaches that can be integrated in daily life and...