Systematic Synthesis of Compressive VDTA-Based T-T Filter with Orthogonal Control of f_o and Q

Based on sixteen nullor-mirror models of the voltage differencing transconductance amplifier (VDTA) and port admittance matrices of the tow-Thomas (T-T) filter with orthogonal control between the characteristic frequency(f_0) and figure of merit (Q),two different categories of the voltage-mode and transconductance-mode T-T filters are synthesized by the means of the nodal admittance matrix (NAM) expansion method.The category A filter that employs two compressive VDTAs and two grounded capacitors includes four structures,and the category B filter that uses two compressive VDTAs,two grounded capacitors,and one grounded resistor,also includes four structures.These circuits are suitable for integrated circuit manufacture,and their parameters f_0 and Q can be orthogonally adjusted with varying the bias currents of VDTAs.After the paper and pencil test is completed,the computer analyses,including alternating current (AC),parameter sweep,Monte Carlo (MC),and noise analyses,are performed to support the synthesis approach.

Analysis on The In？ uence of Regional Financial Development to The Upgrading of Regional Industrial Structure

This paper mainly introduces the regional , nance in detail,points out that the goal of industrial structure is more reasonable and advanced,expounds the influence of regional financial development on the upgrading of regional industrial structure,puts forward some suggestions for regional financial development to further promote the upgrading of the structure.

Effects of Yanhusuo(Rhizoma Corydalis),Baizhi(Radix Angelicae Dahuricae)and Their Combination Extracts on Cytochrome P450 Activities in Rats

Background:Yuanhu Zhitong Prescription(元胡止痛方,YZP),a well-known herbal prescription for an analgesic effect,is recorded in the China Pharmacopoeia,consisting of Yanhusuo(Rhizoma Corydalis)and Baizhi(Radix Angelicae Dahuricae).Objective:To explore the influence of 70%EtOH extracts from Yanhusuo(Rhizoma Corydalis),Baizhi(Radix Angelicae Dahuricae)and YZP on the CYP450s,especially the differences between the single drug and prescription.Materials and methods:Cocktail probe drugs method was used to evaluate Cytochrome P450 activities in rat liver microsomes,including CYP1A2,CYP2D1,CYP2C11,CYP2C6 and CYP3A1,after rats repeatedly administrated with the extracts of Yanhusuo(Rhizoma Corydalis),Baizhi(Radix Angelicae Dahuricae)and YZP for 7 days.Results:Yanhusuo(Rhizoma Corydalis)extracts significantly increased the activities of CYP1A2,2C6 and 3A1,and inhibited that of 2D1.Baizhi(Radix Angelicae Dahuricae)extracts significantly increased the activities of CYP1A2 and inhibited that of 2D1 and 2C11.YZP extracts exhibited the same effect with single drugs.Conclusion:These results might partly interpret the TCM compatibility.Moreover,co-administration of prescriptions containing Yanhusuo(Rhizoma Corydalis),Baizhi(Radix Angelicae Dahuricae)or YZP should consider a potential herb(drug)-drug interaction medicated by the induction of CYP1A2,2C6 and 3A1 and inhibition of CYP2D1 and 2C11 enzymes.

Effects of sports on school adaptability, resilience and cell phone addiction tendency of high school students

BACKGROUND Sport help promote healthy physical and mental development of high school students.To date,there have been few studies on the effect of sport on school adaptability,resilience and cell phone addiction tendency of high school students.AIM To explore the effects of sports on school adaptability,resilience and cell phone addiction of high school students.METHODS A stratified random sampling method was used to select 600 students from two high schools in Lhasa,and Physical Activity Rating Scale,School Adjustment Scale for High School Students,Chinese Adolescents Resilience Scale,and Mobile Phone Addiction Index were used for field questionnaire survey.RESULTS Sport was positively correlated with school adaptability and resilience(P<0.01),school adaptability was positively correlated with resilience(P<0.01)and cell phone addiction was negatively correlated with sports,school adaptability and resilience(P<0.01).The direct effect of sport on cell phone addiction was significant(P<0.001),accounting for 20.51%of the total effect.The mediating effect of school adaptability on sport and cell phone addiction was significant(P<0.001),accounting for 17.38%and 35.36%of the total effect value,respectively.School adjustment and resilience had a significant chain-mediated effect on sport and cell phone addiction(P<0.001),accounting for 26.75%of the total effect.CONCLUSION Sport affected the cell phone addiction tendency of senior high school students through the mediating effect of school adaptability and resilience,and through the chain mediation effect of both.

Comparative Analysis of Rice Export Competitiveness in Heilongjiang Province of China Based on Index Method

Based on the analysis of rice planting and export development in Heilongjiang Province in 2013-2021,this paper comprehensively used three export competitiveness analysis methods,namely,trade competitiveness index,revealed comparative advantage(RCA)analysis and international market share analysis,to compare the four major rice exporters in the world and the three major rice export provinces and cities in China.Besides,it evaluated the rice export competitiveness of Heilongjiang Province from multiple perspectives.It analyzed the reasons for low competitiveness in terms of export product structure,export market structure,production and processing technology,and brand building.Finally,it is recommended to clarify the positioning of rice export quality and take more measures to ensure product quality;improve the level of industrialization of rice production and processing,and extend the rice industry chain;develop diversified rice export markets and improve export flexibility;adhere to the principle of"opening the door and going out",expand the international popularity of high-quality brands,so as to enhance the rice export competitiveness of Heilongjiang Province.

Exploration on Interesting and Skill Programming of WEB Software Development

Although the WEB software development has some difficulty,but as long as the programming skills to find,in the practice ofoperation will find programming fun,this will stimulate the enthusiasm of students programming.Exploration of interesting skills programmingof WEB software development is aimed at developers who initial contact with WEB software,through the practice of operation to make themget some fun of WEB programming,from simple to difficult gradually let students master WEB programming skills,improve students＇ interestin programming.By adding some special effects of webpages to enhance the students＇ interest in programming,through the key practice ofdatabase,let the students out of fear of programming of database connection.

Research on The Teaching Reform of Computer C Language under The Mode of MOOC

Computer C language is a high-level language,and also the basis for students to learn computer courses.A great deal ofknowledge point and practice point have greatly increased the difficulty for students to learn.However,today under the development of networktechnology, the formation of the mode of MOOC has caused the reform of original education mode to a greater extent,this not only effectivelyalleviate the difficulties of students in learning C language,but also enhance the teaching efficiency of C language.

Analysis on The Incentive Effect of Occupational Pension in The Human Resource Strategy of Private University

Occupational pension can play an active role in the management of human resources at the present stage,and has the good effect.As a human resource strategy,the active application of occupational pension in private universities can effectively improve the traditional salary management work,promote the salary management work smoothly,and provide effective conditions for human resource assessment.In private university human resources strategy,the positive application of occupational pension,need to continue to play its incentive function and effect,to attract more excellent teachers to participate in school construction,to improve the overall teaching achievements.This paper mainly starts with the connotation and the definition of occupational pension,introduces and analyzes the relevant situation of occupational pension comprehensively,and gives a detailed description of the incentive effect of occupational pension in the human resource strategy of private universities.

Research on The Development of Derivative Products of Comic and Animation Advertising Video of Local Characteristic Culture

Rich historical and humanistic resources and local characteristic culture provides a wealth of material for creation of comic and animation.In recent years,animation industry of our country has achieved rapid development.However,the limitations of the traditional concept and the external environment make the development of derivative products of local characteristic culture comic and animation advertising video still exists many problems.It need to strengthen efforts of derivatives development of this field,clear animation market positioning,pay attention to intellectual property protection,make animation industry of our country in a state of benign development.

Study on The Relationship between The Structural Design and Shell Fabric of Men＇s Trousers Based on Skin Stretch

In general,for the majority of men,the amount of exercise is relatively large,so the dress requirements for the men＇ s trousers gradually have new requirements.It pays more attention to comfort and personality.The theoretical basis of the clothing loose amount and structural design are both the shape change cased by skin stretch of human body under various movement conditions,the human body has different postures,which will generate different skin stretch data.The combination of static body type and dynamic movements of human body determines clothing structure design,different body movements,different degree of movements and changes in skin stretch all have a direct impact on the form of clothing attached to the human body.

Optimization of Enterprise Training System from The Perspective of Project Management

At present,there are a series of problems in the enterprise training system,such as the lack of systematic management,imperfect management and control measures,the lack of scienti＇c evaluation system,and so on.With the rapid development of information technology,the members of the enterprise should not only strengthen their own learning,but also promote each other.The training system of the enterprise should effectively take these needs as the preferred factors to establish and optimize the system.Based on this urgent need,this paper will put forward some thoughts on the optimization of enterprise training system from the perspective of project management.

Research on the application of computer network remote control system

In this era of accelerated pace of life, high efficiency and superior quality has undoubtedly become the focus of attention. In this context, the computer has been the core component of our daily production, life and entertainment. In fact, the vast majority of modem areas cannot be separated from the computer, if separated from the computer, these areas are likely to be subject to enormous challenges and threats, so people and computer dependence are increasing. With the advent of the Internet era, the network and the economic, trade, cultural exchanges and other activities related to the increasingly problematic. The computer network remote control system is a new kind of multimedia network control system Network platform to carry out related construction. In this paper, the application of computer network remote control system as the core of the study, hoping to provide help for the majority of technical staff.

Research on Environmental Accounting Information Disclosure of Listed Company under Low Carbon Economy

Since entering into the new century,domestic society develops rapidly,a variety of advanced ideas are constantly introduced into our country,the awakening of people’s ideology also makes the society develop greatly.Low carbon economy is a new economic concept,which is the need of achieving sustainable development of society,and the requirements of the times.With the development of economy,more and more domestic listed companies appear.In listed companies,there are still many problems and shortcomings in the disclosure of environmental accounting information,which need improving constantly.This paper mainly studies the problems of environmental accounting information disclosure of listed companies in low carbon economy,and puts forward some specific suggestions and measures,to promote the development of listed companies.

Dynamic Crop Information System Design and Implementation Based on 3 s Technology in Shaanxi Province

By using 3s technology, the dynamic crop information system can be developed to meet the needs of sharing the agriculture information in Shaanxi Province. The dynamic crop information system can realize the query of crop information attribute and space, and the automatic acquirement, dynamic distribution and classification analysis of crop information. In this way, the whole process of real-time management of agricultural product with information and visualization can be carried out, which is to improve the level of agriculture information management automation in Shaanxi Province.

办公自动化中计算机处理技术应用实践探析

办公自动化是办公部门与企业之间的信息交流平台,是各职能部门之间进行协作的重要平台。办公自动化是信息时代发展的必然趋势,将会在各个领域发挥重要的作用。由于新一代办公自动化系统是以网络为基础,能够将传统的计算机应用到现代化信息管理中去,并通过网络进行沟通交流处理。

A comprehensive review of integrative pharmacology-based investigation:A paradigm shift in traditional Chinese medicine

Over the past decade,traditional Chinese medicine(TCM) has widely embraced systems biology and its various data integration approaches to promote its modernization.Thus,integrative pharmacology-based traditional Chinese medicine(TCMIP) was proposed as a paradigm shift in TCM.This review focuses on the presentation of this novel concept and the main research contents,methodologies and applications of TCMIP.First,TCMIP is an interdisciplinary science that can establish qualitative and quantitative pharmacokinetics-pharmacodynamics(PK-PD) correlations through the integration of knowledge from multiple disciplines and techniques and from different PK-PD processes in vivo.Then,the main research contents of TCMIP are introduced as follows:chemical and ADME/PK profiles of TCM formulas;confirming the three forms of active substances and the three action modes;establishing the qualitative PK-PD correlation;and building the quantitative PK-PD correlations,etc.After that,we summarize the existing data resources,computational models and experimental methods of TCMIP and highlight the urgent establishment of mathematical modeling and experimental methods.Finally,we further discuss the applications of TCMIP for the improvement of TCM quality control,clarification of the molecular mechanisms underlying the actions of TCMs and discovery of potential new drugs,especially TCM-related combination drug disco very.

Pathological Models of EXCCCII and Its Applications in Oscillator Synthesis

After giving six different forms of the extra X second-generation current-controlled conveyor(EXCCCII),pathological models of six EXCCCIIs are found by the nodal admittance matrix(NAM)expansion approach.Furthermore,these ideal pathological circuit models are employed and 36 Wien oscillators and 8 third-order quadrature oscillators are synthesized by the NAM expansion.The hand analysis and computer analysis are introduced to prove the synthesized circuits are correct and effective.

A compact fluorescence/circular dichroism dual-modality probe for detection, differentiation, and detoxification of multiple heavy metal ions via bond-cleavage cascade reactions

Selective detection of multiple analytes in a compact design with dual-modality and theranostic features presents great challenges. Herein, we wish to report a coumarin-thiazolidine masked D-penicillamine based dual-modality fluorescent probe COU-DPA-1 for selective detection, differentiation, and detoxification of multiple heavy metal ions(Ag^(+), Hg^(2+), Cu^(2+)). The probe shows divergent fluorescence(FL)/circular dichroism(CD) responses via divergent bond-cleavage cascade reactions(metal ion promoted C-S cleavage and hydrolysis at two distinctive cleavage sites): FL “turn-off” and CD “turn-on” for Ag+(no hydrolysis), FL “turn-on” and CD “turn-off” for Hg^(+)(imine hydrolysis), and FL “self-threshold ratiometric” and CD “turn-off” for excess Cu^(2+)(lactone and imine hydrolysis), providing the first example of a fluorescence/CD dual-modality probe for multiple species with complimentary responses. Moreover, the bond-cleavage cascade reactions also lead to the formation of D-penicillamine heavy metal ion complexes for potential detoxification treatments.

Synthesis for Current-Mode Sallen-Key Filter Using VDTAs

In this work, an original Sallen-Key second-order low-pass filter is first turned into a current-mode one by means of the adjoint network theorem. Two nodal admittance matrices(NAM) of the filter are then educed. Furthermore, these two matrices are expanded through NAM expansion approach, generating one current-mode Sallen-Key filter, which uses two compact voltage differential trans-conductance amplifiers(VDTAs) and two grounded capacitors, implements not only one low-pass transfer function but two band-pass transfer functions, and provides the non-interrelated control between the natural frequency and quality factor. As an example of the synthesized filter, a second-order VDTA filter with fo=1 MHz, Q=1, HLP=-HBP1=HBP2=1 is designed. The used synthesis approach has been confirmed with the help of circuit and computer analysis.

Systematic Synthesis for Multiple-Feedback Filter Using OTAs and CCCIIs

In order to obtain the multiple-feedback filter with simpler structure and electronic control,this paper first derives nodal admittance matrix(NAM)equation of the multiple-feedback filter.Furthermore,in accordance with the pathological models of the operational transconductance amplifier(OTA)and second generation current-controlled conveyor(CCCII),the multiplefeedback filter based on OTAs and CCCIIs are respectively synthesized by the NAM expansion method.The filter employing three OTAs has eight equivalent realizations and the filter employing three CCCIIs has 16 equivalent realizations.24 different forms of the current-mode filters are synthesized in all.fo and Q of the synthesized filters can be tuned by tuning bias currents of the active elements.The hand analysis and computer analysis are included to support the method to be utilized.