A Secure Device Management Scheme with Audio-Based Location Distinction in IoT

Identifying a device and detecting a change in its position is critical for secure devices management in the Internet of Things(IoT).In this paper,a device management system is proposed to track the devices by using audio-based location distinction techniques.In the proposed scheme,traditional cryptographic techniques,such as symmetric encryption algorithm,RSA-based signcryption scheme,and audio-based secure transmission,are utilized to provide authentication,non-repudiation,and confidentiality in the information interaction of the management system.Moreover,an audio-based location distinction method is designed to detect the position change of the devices.Specifically,the audio frequency response(AFR)of several frequency points is utilized as a device signature.The device signature has the features as follows.(1)Hardware Signature:different pairs of speaker and microphone have different signatures;(2)Distance Signature:in the same direction,the signatures are different at different distances;and(3)Direction Signature:at the same distance,the signatures are different in different directions.Based on the features above,amovement detection algorithmfor device identification and location distinction is designed.Moreover,a secure communication protocol is also proposed by using traditional cryptographic techniques to provide integrity,authentication,and non-repudiation in the process of information interaction between devices,Access Points(APs),and Severs.Extensive experiments are conducted to evaluate the performance of the proposed method.The experimental results show that the proposedmethod has a good performance in accuracy and energy consumption.

Strengthening Brand Construction and Improving the Competitiveness of Tropical Distinctive Agricultural Products in Hainan

Brand construction plays an increasingly important role in marketing and competition in modern agricultural industry. There are problems in brand construction of tropical distinctive agricultural products in Hainan,including less famous brand products,weak core competence,strengthening declaration and ignoring management as well as imperfect marketing system,therefore resource integration should be stressed to develop famous brand products and technological innovation should be strengthened to promote core competence of enterprise.

Evaluation and Analysis on the Competitiveness of Guangxi Distinctive Agriculture

On the basis of the developmental status of Guangxi distinctive agriculture,the key selection of developing Guangxi distinctive agriculture is analyzed.Its distinctive agriculture contains distinctive plantation,distinctive forestry and distinctive breeding.Based on the analysis,two display indices,domestic comparative advantages index and domestic competitiveness,are selected to analyze the competitiveness of Guangxi distinctive agriculture.The results show that at present the overall competitiveness of Guangxi distinctive agriculture is strong,but its competitiveness is reflected on resource advantages and most of the resources are primary agro-products.Accordingly,in the future,Guangxi distinctive agriculture should adopt non-equilibrium developmental strategy;take the great-leap-forward developmental path;apply modern production elements to increase the competitiveness of Guangxi distinctive agriculture.It should lay stress on "three innovation",which includes organization innovation,developing distinctive agricultural firms ;technology innovation,enlarging the scope and scale of agricultural listed companies;financial fund-raising innovation,transforming traditional distinctive agriculture by using high and new technology.

Pulsed microwave-driven argon plasma jet with distinctive plume patterns resonantly excited by surface plasmon polaritons

Atmospheric lower-power pulsed microwave argon cold plasma jets are obtained by using coaxial transmission line resonators in ambient air.The plasma jet plumes are generated at the end of a metal wire placed in the middle of the dielectric tubes.The electromagnetic model analyses and simulation results suggest that the discharges are excited resonantly by the enhanced electric field of surface plasmon polaritons.Moreover,for conquering the defect of atmospheric argon filamentation discharges excited by 2.45-GHz of continued microwave,the distinctive patterns of the plasma jet plumes can be maintained by applying different gas flow rates of argon gas,frequencies of pulsed modulator,duty cycles of pulsed microwave,peak values of input microwave power,and even by using different materials of dielectric tubes.In addition,the emission spectrum,the plume temperature,and other plasma parameters are measured,which shows that the proposed pulsed microwave plasma jets can be adjusted for plasma biomedical applications.

Standardization of the Industrial Chain of Distinctive Agricultural Products Based on Network Platform

In the paper,the concept of circulation industrial chain of distinctive agricultural products is introduced.By using the e-commerce platform,the new industrial chain for the circulation of distinctive agricultural products on the basis of online transaction is established.In view of the standardization problems in the production and processing section,online exhibition and trade section,after sale section,the related solutions are put forward.In the production and processing sections,the fruit farmers should implement scale cultivation;pick and store fruits according to the local situation;pack fruits by using green package which can represent the features of the brand;establish the agricultural products association.In the section of online exhibition and trade,the identity of network platform should be normalized and the authentication technique and system should be perfected;the unification of product exhibition should be paid attention to;the specialization of negotiation should be intensified and the differences in communication should be represented;the price should be made comprehensively and the reference factors should be diversified;the entrance situation should be legalized and the account should be managed differently.In the after sale section,the business scope of logistics should be expanded and technology should be input;taking the customers as the center,the subsystem of distinctive service standard should be stipulated;the credit evaluation standard and punishment mechanism should be clarified;the customer-related management system should be implemented as well as the supervision mechanism.

The Plights and Countermeasures in the Implementation of Distinctive Agriculture Insurance of Hebei Province

The feasibility of implementing distinctive agriculture insurance in Hebei Province is analyzed from the following aspects covering the support of policies and laws;agricultural products and brands with Hebei distinct;the rich experience of insurance companies;farmers' strong awareness on insurance and farmers' great demand on agricultural insurance.The plights faced by distinctive agricultural insurance are pointed out.It includes weak awareness of farmers on buying insurance;low enthusiasm of insurance company;poor support from the government and backward laws and regulations and so on.The countermeasures on developing distinctive agricultural insurance are put forward.The countermeasures on improving farmers' awareness on buying insurance;innovating the insurance products and services;increasing the support from the government;perfecting the legislation on agricultural insurance should be adopted to develop agricultural insurance.

Informationized Technological Path for the School-running Risk Prevention and Supervision of Private Colleges and Universities under the Background of the Internet

At present,with the decrease of the educational population and the gradual deepening of the higher educational reform,the development of the private colleges and universities is facing various contradictions and challenges.The development concept of"innovation,coordination,green,open and sharing"put forward at the Fifth Plenary Session of the Eighteenth Central Committee of the CPC provides the value guidance and the practical basis for the private colleges and universities to renew their development concepts and solve their development problems.

The Distinctive Feature of Nashe′s Poetry Spring-A Study of Spring

Thomas Nashe′s Spring is a lyric poem extracted from his comedy "Will Summer′s Testament". It is a poem of iambic pentameter. The whole poem is made up of three stanzas. Simple and plain as its language is , it is the language of common speech of his own time, ingeniously chosen, refined, modified and heightened. The author′s use of a combination of alliteration, mediate and end rhyme in its rhyme scheme makes the poem read as smoothly and briskly as singing a song. His arrangement of four rhythm or beating schemes in a single poem makes the poem confirm to no conventional pattern. His employment of many rhetorical devices makes the poem vivid, imaginative and perfective.

Distinctive Expo

China International Home Textile Trade Fair Brief Introduction China International Home Textile Trade Fair will launch at the Shanghai New International Expo Centre as the same ever during 25th-27th

Building Pattern Technique of an Indigenous Community - Does Its Appearances a Distinctive Representation?

Bangladesh is enriched with beautiful traditional indigenous cultures.Different indigenous peoples with their distinctive existences also considerably create an enhance values and lifestyles to the socio-cultural sectors of Bangladesh[1].Habitually,these indigenous communities have been comparable to live a large combined family to shear their lifestyles[2].Presently the country has 45 indigenous communities who are living in different locations.All indigenous people within this country have their own style to build their settlements with special techniques to keep them safe and sound from all types of natural and environmental vulnerabilities and also enhance their knowledge of construction techniques and lifestyle.Rakhain is one of them with very small number of people are still living in different regions within the country which have their own system of building techniques.Study found that for several hundreds of years Rakhains are strictly following their indigenous prescription of house and settlement pattern.Although like other indigenous people of this country,they have mountains of problems,such as forced land occupation,lack of security and minority characteristics.Above all,forced political separation has gradually drowned them in the abysmal pit of marginal destiny.This has turned them into exiles in their own land.As a result,many of them are being forced to leave the country and as a result they misplaced their native knowledge and technique to construct.Thus,this study will initially focus on to search for the distinctiveness of their settlement pattern and building construction techniques and lifestyle.Again,in view of their problems,knowledge and experiences concerning archetype,built and house pattern,this study will finally explain how Rakhains accumulate their every distinctiveness from history and for present and future invention.

On the Role of Distinctive Features of British English Sounds in the Cartoon Peppa Pig for Chinese Learners to Conquer Mother Tongue’s Negative Tra

With the process of globalization and integration,more and more people tend to be bilingual.Undoubtedly,mastering a second language is significant.This thesis aims to explore how to conquer the difficulties in learning British English sounds through analyzing a British cartoon Peppa Pig.Chapter one begins with the research background,significance and purpose of research.The thesis takes the cartoon Peppa Pig as the starting point to demonstrate the role of distinctive features for Chinese learners to conquer negative transfer.The empirical research could be found in Chapter two,because of requiring to know the concrete circumstance of Chinese learners.Through the collection and analysis of data,we can know these problems which Chinese learners exist in the process of learning British English.Based on the comparison of Chinese and British English,Chapter three clarifies the difficulties in learning British English.As for Chinese learners,mastering distinctive features can promote learners to master British English sounds better than stress and rhythm.Chapter four states the role of the distinctive features in helping conquer Chinese negative transfer in the cartoon Peppa Pig.The final chapter is the conclusion of this thesis and involves a new study for Chinese learners to learn British English sounds under the distinctive features.

数字化转型差异度对企业绩效的影响研究

基于最优区分理论,构建企业数字化转型差异度对企业绩效影响的研究框架,并探索市场竞争程度、政策不确定性和战略差异度的调节效应。以2007~2021年A股上市公司为样本进行实证检验,研究发现:数字化转型差异度与企业绩效之间呈倒U形关系;市场竞争程度的提升导致倒U形曲线变得更加陡峭,且转折点向左移动;政策不确定性的提升导致倒U形曲线变得更加平缓,且转折点向左移动;战略差异度的提升导致倒U形曲线变得更加平缓,且转折点向右移动。

德行诠释学建构的辨与思——潘德荣教授学术访谈录

潘德荣教授提出的德行诠释学展示了哲学诠释学理论当代发展的多重理论面向。概括起来看,自然与精神、理论与实践、认知与诠释、理解与德行、本体与生命之间的辨与思集中体现了德行诠释学建构过程中的思维理路。

一流大学医学院文化建设的探索与思考——以浙江大学医学院的实践为例

文化建设是促进一流大学医学院高质量发展的内在精神动力,也是其传播力和影响力的有力抓手,承担着文脉传承与价值引领的作用。本文结合新时期加强学院文化建设的重要意义,立足一流大学医学院文化建设的不足和迫切需求,剖析梳理浙江大学医学院构建特色文化体系的探索实践和标志成效,为进一步深化一流大学医学院文化内涵建设,强化一流大学医学院文化引领能力提供路径。

试论“谐体”与“本体”的界定区分及其重要意义

汉语学界多年前就开始对谐音结构中的“谐体”和“本体”加以界定和区分。尽管前述概念早已用开,但论及何谓谐体何谓本体始终是各说各话。目前流行的代表性观点主要有三种,而无论着眼于谐音生成的起与讫,还是着眼于形式表现的常与变,还是着眼于语义层次的内与外,均无法保证这三种观点无往不利。文章通过同比喻和借代相关概念的比较,亦即通过同喻体和本体、代体和本体的比较,以及基于术语系统对称性和整齐性的考量,提出将对应于手段还是对应于目的作为区分谐体和本体根据的新观点,并对此作了充分验证。科学界定和正确区分谐体和本体,对谐音构成机理的探究、谐音研究的学术交流、谐音译注的理解领会、语文教学的顺利开展及语文词典的规范编纂,都有着重要的学术价值和实践指导意义。

基于时空理论的团队最优区分管理框架研究

如何管理团队中的一致性(“同”)和多样性(“异”)是重要的研究问题。最优区分理论提供了一个认识该问题的重要视角,个体既有与特定群体保持相似的“同属”需要,也有表现个人独特一面的“区分”需要。这两种心理需要间有内在张力,能否较好地满足和平衡二者会给个体和团队带来影响。本研究指出,该理论存在一些局限性。研究基于领导和管理的时空理论,结合最优区分和团队管理研究,构建了在团队管理中如何实现和促进最优区分的理论。研究阐述了如何用时空理论理解团队管理,分析了团队中的“同属”和“区分”在空间(维度、层次)和时间(动态)上的表现与特征。研究提出了基于时空理论的团队最优区分管理框架,指出领导者可以在维度、层次上动态地采取不同措施,以实现对看似对立需要的协调统一。研究借助重心隐喻阐述了该理论框架对综合、系统地考虑多要素的强调,建构了最优区分的时空平衡和时空最优解。研究最后讨论了理论贡献、实践意义和未来展望。

区隔与重构:《贵州山民图》中的民族边缘意识

《贵州山民图》是庞薰琹抗战时期所创作的民族主题系列组画。《贵州山民图》以庞薰琹在贵州苗族地区的民族学考察为创作契机,以苗族人民的生活劳作为题材,详细描绘了苗民的衣饰花纹,从而突出了苗族较汉族的“异质性”。但在表现形式上,庞薰琹采用中国传统水墨笔法表现苗族群体,为苗民形象增添了文人意味,使汉、苗两族的艺术风格得以有效结合,反映出民国时期民族边缘的重构过程。因此,《贵州山民图》既强调了汉民族的主体地位,又折射出少数民族的汉化历程,是民国时期整体国族观念下的产物。庞薰琹以绘画的形式将民族研究成果直观化、视觉化,为中国近代民族学发展提供了与艺术相关的新思路,使此时的民族学研究更为全面多样。

考虑消落带岩体劣化影响的典型危岩岸坡稳定性研究

三峡库区周期性水位升降引起的消落带岩体劣化对典型危岩岸坡稳定性具有重大影响。基于野外调研及地勘资料,采用通用离散单元法程序(universal distinct element code,简称UDEC)研究了消落带劣化区形态对近水平层状高陡危岩岸坡的稳定性影响。研究表明:目前三峡库区巫山段的近水平层状危岩岸坡消落带岩体劣化严重,在不同消落带劣化区存在紧密层状、松散碎裂状、溶蚀凹腔状、含挤压碎裂带等典型消落带劣化区形态;含有第1种消落带劣化区形态的危岩岸坡稳定性较好,危岩体位移较小,失稳模式为滑移破坏;含有第2种消落带劣化区形态的危岩岸坡危岩体先向坡内偏移,其后随着消落带岩体支撑强度弱化向坡外倾倒破坏;含有第3种消落带劣化区形态的危岩岸坡危岩体向坡外位移较大,失稳模式为倾倒破坏;含有第4种消落带劣化区形态的危岩岸坡稳定性主要受挤压破碎带的力学性质控制,易产生沿破碎带切割面的旋转滑移破坏;通过对以上4种劣化区形态的危岩岸坡增加防治加固措施,危岩体的变形位移得到了不同程度的有效控制。

论明代辨体类总集对《文章正宗》四部文体分类法的继承与创新——以《文章辨体》《文体明辩》《文章辨体汇选》三书为中心

过去对《文章正宗》四部文体分类法的影响研究主要集中在储欣、姚鼐、吴曾祺、李兆洛、曾国藩等编选的以“归类”为旨归的总集上,以突出其在文体分类上执简驭繁的功效。《文章辨体》等辨体类总集尽管在传统的文体分类上采取的是“每体自为一类”的方式,然细考其文类编排仍可见真氏四部分类之流风。将明代辨体类总集与此四部分类法结合起来考察有助于识别文类内涵的变迁,对客观评估真氏四部分类法乃至建构古代文章学的分类方式亦有所裨益。