AN EFFICIENT FORWARD SECURE GROUP SIGNATURE SCHEME WITH REVOCATION
具有强前向安全性的动态门限签名方案
1.College of Information Science & Technology, Zhengzhou Normal University, Zhengzhou 450044, China 2.College of Computer Sciences, Beijing University of Technology, Beijing100124, China
作者简介：程亚歌（1987—），女，助教，研究领域为密码学、信息安全，E-mail：897373693@；胡明生（1973—），通信作者，男， 博士，教授，研究领域为软件工程；公备（1984—），男，博士，教授，主要研究领域为信息安全、可信计算；王利朋（1987—）， 男，助教，主要研究领域为虚拟化安全、云存储、并行计算；徐二锋（1987—），男，助教，主要研究方向为软件工程、云存储。
Computer Engineering and Applications 计算机工程与应用
2020，56（5） 125
具有强前向安全性的动态门限签名方案
程亚歌 1，胡明生 1，公 备 2，王利朋 1，徐二锋 1 1. 郑州师范学院 信息科学与技术学院，郑州 450044 2. 北京工业大学 计算机学院，北京 100124
程亚歌，胡明生，公备，等 . 具有强前向安全性的动态门限签名方案 . 计算机工程与应用，2020，56（5）：125-134. CHENG Yage, HU Mingsheng, GONG Bei, et al. Dynamic threshold signature scheme with strong forward security. Computer Engineering and Applications, 2020, 56（5）：125-134.
数字时代发展信息识别技术英语作文
数字时代发展信息识别技术英语作文{z}Title: The Development of Information Identification Technology in the Digital AgeIn the digital age, information identification technology has become an essential tool in our daily lives.With the rapid development of science and technology, especially the Internet, we are surrounded by an unprecedented amount of information.T o make sense of this overflow of data, information identification technology has emerged as a crucial element in sorting, analyzing, and protecting information.At its core, information identification technology involves the use of algorithms and systems to identify and classify information based on its content, source, and context.This technology has found applications in various fields, such as email filtering, search engines, digital rights management, and cybersecurity.One of the most significant advantages of information identification technology is its ability to help users navigate the vast sea of data.For instance, search engines like Google and Bing use complex algorithms to understand user queries and provide relevant search results.Similarly, email providers use identification technology to filter out spam and malicious emails, protecting users from potential threats.In addition to benefiting individual users, information identification technology also plays a crucial role in business and governmentoperations.For instance, in the business world, data mining and analytics tools help companies understand their customers better, optimize operations, and identify market trends.In the public sector, information identification technology is used for intelligence gathering, law enforcement, and policy-making processes.However, the development of information identification technology also raises concerns about privacy and security.As algorithms become more sophisticated, there is a risk of侵犯用户隐私, and the potential for discrimination and bias in decision-making processes.Therefore, it is crucial for developers and policymakers to ensure that these technologies are used responsibly and ethically.Furthermore, the rapid evolution of information identification technology requires continuous research and development to keep up with emerging threats and challenges.As we move forward in the digital age, it is essential to invest in the development of more accurate, efficient, and secure information identification technologies.In conclusion, information identification technology has become an integral part of our lives in the digital age.It helps us make sense of the vast amount of information available and protects us from potential threats.However, its development also raises important ethical and security concerns that need to be addressed.As we continue to advance in this digital era, it is crucial to promote the responsible and ethical useof information identification technology to harness its full potential for the benefit of society.。
外贸管理制度模板英文简称
1. IntroductionThe International Export Management (IEM) is a comprehensive set of guidelines and procedures designed to ensure the efficient and effective operation of an organization's export activities. This template outlines the key components of the IEM, including policy statements, operational procedures, compliance requirements, and documentation standards. The IEM is intended to provide a framework for all personnel involved in international trade, ensuring that they are equipped with the necessary knowledge and tools to conduct business successfully across borders.2. Policy Statements2.1 Compliance with Laws and RegulationsAll export activities must comply with the laws and regulations of the exporting and importing countries, including but not limited to trade agreements, customs requirements, and export control laws.2.2 Quality AssuranceThe organization is committed to delivering high-quality products and services that meet the expectations of its international customers.2.3 Fair Business PracticesThe organization adheres to fair and ethical business practices, including honesty, integrity, and transparency in all dealings.2.4 Risk ManagementThe organization will identify, assess, and mitigate risks associated with export activities to protect its interests and those of its customers.3. Operational Procedures3.1 Market Research and AnalysisRegular market research and analysis will be conducted to identify potential opportunities and threats in target markets.3.2 Customer Relationship ManagementA systematic approach to managing customer relationships will be implemented to ensure customer satisfaction and retention.3.3 Pricing and QuotationA clear pricing policy will be established, and detailed quotations will be provided to customers, including terms of payment and delivery.3.4 Documentation and ComplianceAll export documentation will be prepared and submitted in accordance with international standards and legal requirements.3.5 Logistics and DistributionEfficient logistics and distribution plans will be developed to ensure timely delivery of goods to customers.3.6 Payment CollectionA secure and reliable payment collection process will be established to minimize risks and ensure prompt payment.4. Compliance Requirements4.1 Export ControlEmployees must be trained on export control regulations and ensure that all export activities are conducted in compliance with these regulations.4.2 Customs ClearanceEmployees involved in customs clearance must be knowledgeable about the procedures and requirements of both exporting and importing countries.4.3 Trade AgreementsEmployees must be aware of applicable trade agreements and understand their implications for export activities.5. Documentation Standards5.1 Commercial InvoicesCommercial invoices must be prepared in accordance with international standards and include all necessary information for customs clearance.5.2 Packing ListsDetailed packing lists must be provided for each shipment, indicating the contents, quantities, and weights of the goods.5.3 Certificates of OriginCertificates of origin must be issued in accordance with the requirements of the importing country.5.4 Other DocumentationAll other necessary documentation, such as bills of lading, insurance certificates, and shipping documents, must be prepared and maintained in accordance with international trade practices.6. Training and Development6.1 Regular TrainingEmployees involved in export activities will receive regular training on IEM policies, procedures, and compliance requirements.6.2 Professional DevelopmentThe organization will provide opportunities for employees to engage in professional development activities to enhance their skills and knowledge in international trade.7. Monitoring and Review7.1 Performance EvaluationThe performance of export activities will be regularly evaluated against set objectives and targets.7.2 Continuous ImprovementThe IEM will be continuously reviewed and updated to reflect changes in market conditions, regulatory requirements, and organizational objectives.8. ConclusionThe International Export Management (IEM) template is a vital tool for organizations seeking to establish a robust framework for their export operations. By adhering to the guidelines and procedures outlined in this template, companies can。
办公场地介绍英文作文
办公场地介绍英文作文Introduction to the Office Space。
Welcome to our office space, a modern and dynamic environment designed to foster creativity, collaboration, and productivity. Our workspace reflects the values of innovation and teamwork that drive our organization. Inthis introduction, I will provide an overview of the key features of our office, highlighting the elements that contribute to an efficient and enjoyable work environment.Location and Accessibility。
Our office is strategically located in the heart of the city, offering easy access to public transportation, major highways, and a variety of amenities. This central location makes it convenient for employees to commute to work, andit also provides ample opportunities for team-building activities and after-work gatherings. With several cafes, restaurants, and shops nearby, our employees can enjoy avibrant urban atmosphere during their breaks or after work.Design and Layout。
maxchange
maxchangeMaxChange: A Revolutionary Solution for Efficient and Secure Data ExchangeIntroductionIn today's interconnected world, data exchange plays a pivotal role in various industries, including finance, healthcare, and e-commerce. However, traditional methods of data exchange often suffer from inefficiencies and security risks. MaxChange aims to revolutionize data exchange by providing a robust and secure solution that enhances efficiency and protects sensitive information.1. The Need for Efficient Data ExchangeEfficient data exchange is essential for organizations to streamline their operations and improve productivity. Traditional methods, such as email attachments or physical media, often lead to delays, data loss, and manual errors. These drawbacks can result in increased costs and hinder collaboration between different stakeholders. MaxChangeaddresses these challenges by offering a seamless and instant data exchange platform.2. Maximizing Efficiency with MaxChangeMaxChange leverages advanced technologies to optimize data exchange processes. With its intuitive user interface, users can easily upload, manage, and send files to multiple recipients. The platform employs high-speed data transfer protocols, ensuring quick and reliable delivery of information. Additionally, MaxChange supports automatic file format conversion, eliminating the need for manual intervention and saving valuable time.3. Ensuring Security and PrivacyData security and privacy are of paramount importance in today's digital landscape. MaxChange implements robust encryption algorithms and industry-standard security measures to protect sensitive information from unauthorized access. The platform follows stringent security protocols, such as multi-factor authentication, data masking, and access controls. Furthermore, MaxChange adheres to regulatory compliances, such as GDPR and HIPAA, to ensure data privacy and maintain legal compliance.4. Collaborative FeaturesIn many industries, collaborative data exchange is crucial for effective teamwork and decision-making. MaxChange offers collaborative features such as real-time document editing, version control, and commenting. These features enable multiple users to work on the same document simultaneously, reducing the need for back-and-forth communication. Moreover, MaxChange maintains a comprehensive audit trail, allowing users to track changes and modifications made to the files over time.5. Integration CapabilitiesMaxChange provides seamless integration capabilities with existing enterprise systems, such as customer relationship management (CRM) and enterprise resource planning (ERP) solutions. It allows organizations to effortlessly embed the data exchange functionalities within their current workflows and systems. This integration ensures a smooth transition and enhances overall operational efficiency.6. Scalability and FlexibilityWhether it is a small business or a large enterprise, MaxChange offers scalable solutions that accommodate varying business needs. The platform allows users to scale their data exchange requirements based on their growing demands without compromising performance. Moreover, MaxChange supports various deployment options, including cloud-based, on-premises, or hybrid models, providing organizations with flexibility and control over their data exchange infrastructure.7. Benefits of MaxChangeThere are several key benefits that MaxChange offers to organizations:- Enhanced efficiency: MaxChange optimizes data exchange processes, reducing manual effort and eliminating delays.- Improved security: The platform follows industry best practices to ensure data security and privacy.- Streamlined collaboration: MaxChange facilitates real-time collaboration, enhancing teamwork and decision-making.- Seamless integration: MaxChange easily integrates with existing enterprise systems, minimizing disruption and maximizing productivity.- Scalability and flexibility: With scalable solutions and various deployment options, MaxChange adapts to businesses' changing needs.ConclusionMaxChange revolutionizes data exchange by providing an efficient and secure solution that streamlines workflows and protects sensitive information. Its advanced features, collaborative capabilities, and integration options make it a valuable asset for businesses across industries. By choosing MaxChange, organizations can transform their data exchange processes, saving time, enhancing security, and improving overall productivity.。
租仓合同用英语
租仓合同用英语Warehouse Rental Contract: A Comprehensive GuideIn the ever-evolving landscape of modern business, efficient and reliable storage solutions have become a crucial component for success. One such integral aspect is the warehouse rental contract, a legally binding agreement that outlines the terms and conditions governing the relationship between the landlord and the tenant. As businesses strive to optimize their logistics and inventory management, understanding the intricacies of a warehouse rental contract has become increasingly important.At the heart of a warehouse rental contract lies the fundamental understanding of the property being leased. This includes a detailed description of the physical space, its dimensions, and the specific amenities or features that come with the rental. Factors such as the square footage, ceiling height, and accessibility to loading docks are typically outlined in the contract, ensuring that the tenant's needs are accurately addressed.One of the primary considerations in a warehouse rental contract is the duration of the lease. This can range from short-term arrangements to long-term commitments, depending on the nature of the tenant's business and their anticipated storage requirements. The contract will specify the start and end dates of the lease, as well as any provisions for renewal or early termination. Tenants must carefully review these terms to ensure they align with their business objectives and operational needs.Closely tied to the lease duration is the matter of rental payments. The contract will outline the agreed-upon rental rate, which may be calculated based on a per-square-foot basis or a flat monthly fee. Additionally, the contract will stipulate the due dates for rental payments, any late fees or penalties that may apply, and the procedures for handling security deposits or other financial considerations.Another crucial aspect of a warehouse rental contract is the allocation of responsibilities between the landlord and the tenant. This includes the maintenance and upkeep of the property, the handling of utilities and insurance, and the management of any shared or common areas within the warehouse facility. The contract will clearly define the obligations of each party, ensuring that there is a mutual understanding of the respective roles and responsibilities.In the event of any disputes or breaches of the contract, the warehouse rental agreement will outline the dispute resolution process. This may include provisions for mediation, arbitration, or the involvement of legal authorities, depending on the nature and severity of the issue. By having a clear and comprehensive dispute resolution mechanism in place, both the landlord and the tenant can feel confident in their ability to address any potential conflicts that may arise.Beyond the core elements of the rental agreement, a well-crafted warehouse rental contract will also address a range of ancillary considerations. These may include restrictions on the types of goods that can be stored, guidelines for the handling of hazardous materials, and rules regarding the use of the property for specific business activities. The contract may also stipulate the tenant's responsibilities for maintaining the cleanliness and safety of the warehouse, as well as any limitations on the tenant's ability to make modifications or alterations to the rented space.The importance of a comprehensive and well-drafted warehouse rental contract cannot be overstated. It serves as the foundation for a successful and mutually beneficial relationship between the landlord and the tenant, ensuring that both parties' interests are protected and their expectations are clearly defined. By carefully reviewing and negotiating the terms of the contract, businesses can minimize therisk of disputes, streamline their logistics operations, and focus on the core objectives of their enterprise.In conclusion, the warehouse rental contract is a critical document that deserves the utmost attention and consideration. By understanding the key elements of this agreement, businesses can navigate the complexities of warehouse leasing with confidence, secure the storage solutions they need, and ultimately drive their operations forward in an efficient and cost-effective manner.。
保障措施英语
保障措施英语Security MeasuresIn today's world, where threats to security and safety are ever-present, it has become essential for organizations and individuals to take necessary steps to protect themselves and their assets. In order to ensure a secure and safe environment, various security measures need to be implemented. In this article, we will discuss some of the important security measures that can be adopted.Firstly, access control is an important security measure that restricts entry to authorized personnel only. This can be achieved through the use of access cards, passwords, biometric systems, or a combination of these. By limiting access to sensitive areas or valuable assets, organizations can effectively reduce the risk of theft, vandalism, or unauthorized access.Secondly, CCTV (Closed Circuit Television) surveillance is another effective security measure. By installing cameras in strategic locations, organizations can monitor activities and record any suspicious behavior. The presence of CCTV cameras acts as a deterrent to potential criminals and also provides valuable evidence in case of any untoward incident.In addition, alarm systems play a significant role in securing premises against unauthorized entry or any security breach. These systems can be programmed to detect motion, smoke, or break-ins, and then trigger an alarm that alerts security personnel or authorities. Alarm systems can also be connected to a central monitoring station, which ensures a prompt response in case ofemergencies.Furthermore, cybersecurity measures are crucial in today's digitized world. With the rapid advancement of technology, the risk of cyber threats and data breaches has increased significantly. Organizations must ensure the implementation of robust firewalls, secure networks, and regular security audits to protect sensitive information and systems from hacking or unauthorized access.Another important security measure is the implementation of emergency response plans. Organizations should have well-defined procedures in place to handle emergencies such as fire, natural disasters, or terrorist attacks. Regular drills and training sessions should be conducted to familiarize all personnel with the emergency protocols and to ensure an efficient response in times of crisis.Lastly, employee background checks and awareness programs are essential security measures. Conducting thorough background checks on potential employees can help identify any criminal history or potential security risks. Additionally, organizing training programs to raise awareness about security threats, such as phishing scams or social engineering, can equip employees with the knowledge and skills to protect themselves and the organization.In conclusion, security measures are vital to protect individuals, organizations, and assets from various threats. Implementing access control systems, CCTV surveillance, alarm systems, cybersecurity measures, emergency response plans, and employeebackground checks are effective ways to enhance security and ensure a safe environment. By investing in security measures, individuals and organizations can minimize risks, deter criminals, and respond effectively to emergencies.。
P25兼容的密钥管理设施说明书
A SECURE, SCALABLE, AND PROVEN KEY MANAGEMENT SOLUTION KEY MANAGEMENTFACILITYManage the inherent complexity within your network and gain greater visibility of your entire fleet of devices deployed in the field. Implementing a robust P25 compliant Key Management Facility (KMF) solution allows for more control, faster maintenance, and ensures that your information is protected with enhanced security features.Keep your devices deployed in thefield where they matter most, not inthe shop. Eliminate downtime, reduce administrative costs, and allow your devices to respond quicker to changing conditions by automating routineand emergency updates to all your land mobile radios, In-line Network Encryptors (INE), and secure mobile phones.FIPS 140-2 Level 2 Compliant•C ertification#1831Tier Options• B ased on # of users,partitions, clientsRobust Feature Set•O TAR• S tore & Forward• S ecure User Group Management• D evice and Group Key Currency•R etry Opportunities• R emote Inhibit / Enable• K ey Material Generation•K MF Hello•K MF RedundancySystem Components Include•W indows Server® 2008• K MF Server and Client Software•W indows7® Client•K MF CRYPTR FEATURESRemotely transfer essential key management messagesto devices via Over-The-Air Rekeying (OTAR). Whetherthe device is in your office or on the other side of townOTAR can send messages to update a device’s keys, pollthe device, inhibit the device, and erase the device’skeys. Devices can also request key updates, send keymanagement messages, and acknowledge events back tothe KMF.All sensitive key information and key managementmessages within the system are protected by theFIPS140-2 certified KMF CRYPTR.Small fleet, mid, and high tier Key Management Facilitysolutions are available to enhance your operations inorder to meet the demand required by your organization.OVER-THE-AIR REKEYING (OTAR)Eliminate the burden of manually rekeying your devices on a regular basis. OTAR is a powerful suite of operations that enables key distribution and key management to be conducted securely over-the-air.OTAR solves the logistical problem of maintaining secure wireless communications.STORE & FORWARDThe KMF can be used in conjunction with the Motorola KVL 3000+ or KVL 4000 Key Variable Loader (KVL) to perform Store & Forward operations. During the rekeying operation, associations between units and the KVL can be performed directly from the user interface. Store & Forward permits a user to reach those units that may be out of range and enables an operator to become more efficient with managing their system. The KVL is capable of transferring the rekey messages originated within the KMF server database to a radio or infrastructure device. Each unit’s response is securely stored inside the KVL and then forwarded directly back to the KMF. The KMF user interface shows an operator which units successfully acknowledged the rekey message for easy key management.SECURE USER GROUP MANAGEMENTAn innovative concept for managing secure radiocommunications among user groups, known as Common Key Reference (CKR) is provided with the KMF. Through the CKR concept, an operator is able to visually track the members and encryption keys assigned to each CKR group. In a single CKR update operation, a new key to allmembers of the group can be sent via OTAR.DEVICE AND GROUP KEY CURRENCYThe KMF tracks whether or not devices have the current encryption keys and parameters. This allows the system manager to quickly find devices that are not up-to date. RETRY OPPORTUNITIESThe KMF offers automated retries of rekey messages when an operator initiates key updates.REMOTE INHIBIT / ENABLESecurely inhibit a compromised devices over-the-air and protect the integrity of your network. When the device is recovered, remotely enable it and securely allow it to re-join the network.KEY MATERIAL GENERATIONThe KMF includes a FIPS 140-2 certified key material generator, freeing operators from the reliance on third party suppliers or manual key material generation. The operator can simply instruct the KMF to replenish the store of keys when the inventory drops below the necessary volume.KMF HELLOKMF Hello is a quick and efficient method of determining whether a radio is within the range of the systemnetwork without introducing unnecessary voice traffic. KMF REDUNDANCYThe KMF Redundancy feature provides a hardwareback-up for the KMF server which contains identical key material information. In the event of a necessary change-over, the redundant KMF seamlessly and automatically takes over operation of the key managementresponsibilities while preserving the existing KMF information and device status.To learn more about how Motorola’s Key Management Facility solution can help you streamline your radio fleet’s key management, contact your Motorola representative or visit /KMF for more information.KMF SPECIFICATIONSMOTOROLA, MOTO, MOTOROLA SOLUTIONS and the Stylized M Logo are trademarks or registered trademarks of Motorola Trademark Holdings, LLC and are used under license. All other trademarks are the property of their respective owners. ©2014 Motorola, Inc. All rights reserved. R3-17-2003DPROJECT 25 COMPLIANT FEATURESAdd, Modify, and Delete Keys Zeroize Change-Over Rekey Hello Warm StartAES & DES-OFB AlgorithmsMOTOROLA SPECIFIC FEATURESKLK (Key Loss Key) Rekeying Remote Inhibit / Enable Multiple Encryption DES-XL, DVI-XL, DVP-XL,Algorithms SupportedAES, DES-OFBPERFORMANCE / CAPACITYUp to 65 Clients supported per KMF Server 64,000 unit database capacity Up to 64 partitions (agencies)KMF CRYPTR ELECTRICAL AND PHYSICAL SPECIFICATIONSPower 12VDC@ 300 mA Dimensions 1.5 X 5.7 X 4.7 in. 39 X 145 X 120 mm Weight1.75 lbs (800g)KMF CRYPTR SPECIFICATIONSKey Storage Capacity 1 Master Key per algorithm FIPS 140-2 Level 2 Certificate #1831FCC CRF 47 Part 15 subpart B for class B equipment CE Certification EN55022: 1998EN55024: 1998。
考试英语作文my family
考试英语作文my family1I have a wonderful family that is a source of warmth and happiness in my life. My father is a man of wisdom and patience. He always takes the time to listen to my problems and offers insightful advice. My mother is a kind-hearted soul, full of love and compassion. She takes care of our family with great dedication and makes our home a cozy haven.One memorable incident was when I failed an important exam and felt extremely frustrated. My parents didn't scold me but encouraged me with their gentle words. They told me that failure was just a stepping stone to success and that I should keep trying. Their support gave me the strength to move forward and do better next time.Another heartwarming moment was during our family gatherings. We would all come together, sharing stories and laughing uproariously. The room would be filled with joy and a sense of togetherness. My younger sister, with her innocent and lively nature, would always come up with funny antics that made everyone burst into laughter.In conclusion, my family is not just a group of people living under one roof. It is a place where love, support, and understanding abound. Every member contributes to the harmony and warmth, making it a truly special place for me.2I have a wonderful family, and there are countless precious memories among us. One of the most unforgettable experiences was our family trip to the countryside last summer.The sun was shining brightly as we set off in high spirits. We reached a peaceful and beautiful village surrounded by green fields and mountains. We spent the whole day together, breathing the fresh air and enjoying the peaceful atmosphere. My father taught me how to fish in the river, and my mother prepared a delicious picnic lunch under the shade of a big tree. My little sister was running around, chasing the colorful butterflies, and her laughter filled the air.In the evening, we sat around a campfire, sharing stories and looking up at the starry sky. The warmth of the fire and the closeness of my family made me feel incredibly happy and secure.This trip was not just a simple outing, but a precious time that strengthened the bonds between us. It made me realize that no matter where we go or what we do, as long as we are together, my family is my greatest source of happiness and strength.3I have a wonderful family, each member of which brings unique colors and vitality to our home. My younger brother is a talented artist. Hisimagination knows no bounds when he holds a paintbrush, creating vivid and enchanting pictures that seem to tell countless stories. My sister, on the other hand, is passionate about dancing. Whenever she steps onto the stage, her graceful movements and charming expressions capture everyone's heart.As for me, I have a deep love for reading. Immersed in the world of books, I can explore different cultures, encounter various ideas, and gain wisdom and inspiration.My father is an excellent cook. His culinary skills can turn ordinary ingredients into delicious feasts, filling our home with the aroma of love and care. My mother is a master of gardening. The garden she nurtures is like a paradise, blooming with beautiful flowers and lush plants.In our family, we respect and support each other's hobbies and talents. We celebrate every achievement and encourage each other during setbacks. Our family is not just a group of people living together, but a warm haven where we grow, learn, and share the joys and sorrows of life.4There was a time when a small conflict emerged within my family. It was a sunny weekend and I had planned to go out with my friends for the entire day. However, my parents had a different idea. They believed that I should stay at home and study as there was an important exam coming up soon.I strongly insisted on going out, arguing that I needed some relaxation to be more efficient in my studies. My parents, on the other hand, were worried that I might waste precious time and not perform well in the exam. The argument grew heated and our voices rose.But then, we all took a deep breath and decided to sit down and have a calm conversation. I expressed my feelings and explained that occasional breaks would help me recharge. My parents listened carefully and shared their concerns and expectations. Eventually, we reached a compromise. I agreed to limit my time out and come back earlier to review my lessons.This incident made me realize that although we might have different viewpoints at times, through communication and understanding, we can always find a way to solve the problem. And it is this mutual understanding and tolerance that make my family a warm and harmonious place.5My family is the most precious and influential part of my life. It is a haven where I have grown, learned, and evolved. Our family has always cherished the values of diligence and kindness. My parents, through their unwavering commitment and hard work, have taught me the significance of perseverance and determination. They rise early each day and put in their best efforts in every task, instilling in me the belief that success comes through consistent effort.The quality of kindness is another virtue deeply rooted in our family.I remember when my mother would offer help to our neighbors in need, without expecting anything in return. Her selfless acts have shown me the beauty of giving and caring for others. This has shaped my character, making me more empathetic and willing to extend a helping hand to those around me.The traditions and values passed down within my family have not only guided my actions but have also given me a sense of identity and belonging. They have been the pillars that have supported me during difficult times and have celebrated my achievements during the good times. My family has been the source of my strength and courage, enabling me to face life's challenges with confidence and optimism. In conclusion, my family has played an indispensable role in shaping the person I am today and will continue to influence my future.。
客户要求签保密协议英文
Dear [Client's Name],I hope this message finds you well. As part of our commitment to maintaining the highest standards of confidentiality and integrity in our business operations, we have identified the need to establish a formal Confidentiality Agreement (also known as a Non-Disclosure Agreement or NDA) with you. This agreement is designed to protect sensitive information that may be shared between our organizations during the course of our professional relationship.Below is a detailed outline of the key points that we propose to include in the Confidentiality Agreement. We believe that these provisions will ensure that both parties are fully aware of their obligations and the scope of the confidentiality commitment.1. Purpose of the Agreement:The purpose of this Confidentiality Agreement is to establish a binding legal framework that will govern the handling of confidential information between [Your Company Name] and [Client's Name]. It is intended to safeguard any proprietary, confidential, or sensitive information that may be disclosed to or obtained by either party in the course of our business interactions.2. Scope of Confidential Information:For the purposes of this Agreement, "Confidential Information" shall include, but not be limited to, the following:- Technical and commercial information, including but not limited to, research and development, product designs, specifications, processes, formulas, and technical data.- Financial information, including but not limited to, budgets, pricing, sales figures, cost structures, and financial projections.- Business strategies, marketing plans, and customer lists.- Proprietary information of either party, including but not limited to, trade secrets, know-how, and intellectual property rights.- Any other information that is identified as confidential by either party or that should reasonably be considered confidential given the nature of the information and the circumstances of its disclosure.3. Obligations of the Parties:- Both parties agree to hold the Confidential Information in strict confidence and not to disclose it to any third party without the prior written consent of the other party.- The receiving party shall use the Confidential Information only for the purpose of fulfilling the obligations under this Agreement and shall not use it for any other purpose.- The receiving party shall take all reasonable measures to protect the confidentiality of the Confidential Information, including but not limited to, implementing appropriate security measures to prevent unauthorized access, use, or disclosure.4. Exclusions from Confidential Information:The obligations of confidentiality under this Agreement do not extend to information that:- Is or becomes publicly known through no fault of the receiving party.- Is already in the possession of the receiving party at the time of disclosure.- Is independently developed by the receiving party without use of or reference to the Confidential Information.- Is obtained from a third party without a breach of such third party's obligations of confidentiality.5. Term of the Agreement:This Confidentiality Agreement shall remain in effect for a period of [insert duration, e.g., five years] from the date of execution. However, the confidentiality obligations shall survive the termination orexpiration of this Agreement and shall continue to apply to Confidential Information disclosed during the term of this Agreement.6. Governing Law and Dispute Resolution:This Confidentiality Agreement shall be governed by and construed in accordance with the laws of [insert jurisdiction]. Any disputes arising out of or in connection with this Agreement shall be resolved through [insert preferred method of dispute resolution, e.g., mediation, arbitration, or litigation].7. Execution:This Confidentiality Agreement shall be binding upon the parties and their respective successors and assigns. It may be executed in one or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.Please review the attached draft of the Confidentiality Agreement. If you agree with the terms and conditions outlined herein, we kindly request that you sign the Agreement and return it to us at your earliest convenience. We are confident that this agreement will help us to foster a mutually beneficial and secure business relationship.Should you have any questions or require any modifications to the draft agreement, please do not hesitate to contact us. We are committed to ensuring that this agreement meets your expectations and protects your interests.Thank you for your attention to this matter.Sincerely,[Your Full Name][Your Position][Your Company Name][Your Contact Information][Company Address]。
论文参考文献标准格式
规范的参考文献格式一、参考文献的类型参考文献（即引文出处）的类型以单字母方式标识，具体如下：M——专着 C——论文集 N——报纸文章 J——期刊文章D——学位论文 R——报告 S——标准 P——专利A——文章对于不属于上述的文献类型，采用字母“Z”标识。
常用的电子文献及载体类型标识：［ＤＢ/OL］——联机网上数据(database online)［DB/MT］——磁带数据库(database on magnetic tape)［Ｍ/CD］——光盘图书(monograph on CD ROM)［ＣＰ／DK］——磁盘软件(computer program on disk)［Ｊ／ＯＬ］——网上期刊(serial online)［ＥＢ/OL］——网上电子公告(electronic bulletin board online)对于英文参考文献，还应注意以下两点：①作者姓名采用“姓在前名在后”原则，具体格式是：姓，名字的首字母. 如： Malcolm Richard Cowley 应为：Cowley, .，如果有两位作者，第一位作者方式不变，&之后第二位作者名字的首字母放在前面，姓放在后面，如：Frank Norris 与Irving Gordon应为：Norris,F. & .；②书名、报刊名使用斜体字，如：Mastering English Literature，English Weekly。
二、参考文献的格式及举例1．期刊类【格式】[序号]作者.篇名[J].刊名，出版年份，卷号（期号）：起止页码.【举例】[1] 周融，任志国，杨尚雷，厉星星.对新形势下毕业设计管理工作的思考与实践[J].电气电子教学学报，2003(6)：107-109.[2] 夏鲁惠.高等学校毕业设计（论文）教学情况调研报告[J].高等理科教育，2004(1):46-52.[3] Heider, .& The structure of color space in naming and memory of two languages [J].Foreign Language Teaching and Research, 1999, (3): 62 – 67.2．专着类【格式】[序号]作者.书名[M].出版地：出版社，出版年份：起止页码.【举例】[4] 刘国钧，王连成.图书馆史研究[Ｍ].北京：高等教育出版社，1979：15-18，31.[5] Gill, R. Mastering English Literature [M]. London: Macmillan, 1985: 42-45.3．报纸类【格式】[序号]作者.篇名[N].报纸名，出版日期（版次）.【举例】[6] 李大伦.经济全球化的重要性[N]. 光明日报，1998-12-27(3).[7] French, W. Between Silences: A Voice from China[N]. Atlantic Weekly, 1987-8-15(33).4．论文集【格式】[序号]作者.篇名[C].出版地：出版者，出版年份：起始页码.【举例】[8] 伍蠡甫.西方文论选[C]. 上海：上海译文出版社，1979：12-17.[9] Spivak,G. “Can the Subaltern Speak”[A]. In & L. Grossberg(eds.). Victory in Limbo: Imigism [C]. Urbana: University of Illinois Press, 1988, .[10] Almarza, . Student foreign language teacher’s knowledge growth [A]. In and (eds.). Teacher Learning in Language Teaching [C]. New York: Cambridge University Press. 1996. .5．学位论文【格式】[序号]作者.篇名[D].出版地：保存者，出版年份：起始页码.【举例】[11] 张筑生.微分半动力系统的不变集[D].北京：北京大学数学系数学研究所, 1983：1-7.6．研究报告【格式】[序号]作者.篇名[R].出版地：出版者，出版年份：起始页码.【举例】[12] 冯西桥.核反应堆压力管道与压力容器的LBB分析[R].北京：清华大学核能技术设计研究院, 1997：9-10.7．专利【格式】[序号]专利所有者.题名[P].国别：专利号，发布日期.【举例】[13] 姜锡洲.一种温热外敷药制备方案[P].中国专利：3, 1989–07–26.8．标准【格式】[序号]标准编号，标准名称[S].【举例】[14] GB/T 16159—1996, 汉语拼音正词法基本规则 [S].9．条例【格式】[序号]颁布单位.条例名称.发布日期【举例】[15] 中华人民共和国科学技术委员会.科学技术期刊管理办法[Z].1991—06—0510．电子文献【格式】[序号]主要责任者.电子文献题名.电子文献出处[电子文献及载体类型标识].或可获得地址，发表或更新日期/引用日期.【举例】[16] 王明亮.关于中国学术期刊标准化数据库系统工程的进展[EB/OL]. [17] 万锦.中国大学学报论文文摘（1983–1993）.英文版 [DB/CD]. 北京: 中国大百科全书出版社, 1996.11．各种未定义类型的文献【格式】[序号] 主要责任者.文献题名[Z].出版地：出版者, 出版年.三、注释注释是对论文正文中某一特定内容的进一步解释或补充说明。
key agreement protocol
one of the protocols that extend the Diffie-Hellman protocol to a group key agreement protocol with oneway function trees.
Reddy and Divya Nalla [5] extend the Identity Based two-party authenticated key agreement protocol to an authenticated group key agreement protocol, using the one-way function trees to generate the first ID-based group key agreement protocol. In their protocol the leaves of the tree denote individual users of group. Sheng-Hua Shiau et al.’s protocol [10], also use a key tree structure. But they use complete binary tree structure i.e. each node in the tree represent one user. A ternary tree based protocol was proposed by Barua et al. [8] that extend the basic Joux's [8] protocol to multi-party setting. In their protocol the leaves of the tree denote individual users and each internal node corresponds to a representative that represents set of users in the sub tree rooted at that node. But their protocol was unauthenticated also. Dutta et al. [7] authenticate this unauthenticated protocol using multi-signatures. In this paper, we propose a group key agreement protocol based on Weil pairing. In our protocol, we use the ID-based authentication and complete ternary Tree architecture such that every node in the tree represents a user of the group. If there are some users want to join or leave the group, not all users in the group need to renew their all computations to get secret key; so it is suit for dynamic changing environment. This paper is organized as followings: Section 2 proposes the notations and assumptions. Section 3 is the proposed protocol. We show the analysis of some security properties that we concerned in section 4. Section 5 describes the comparison of computation overhead with other protocols. Finally, section 6 shows our result.
乘火车时刷脸进站作文英语
When traveling by train,the implementation of facial recognition technology has revolutionized the way passengers enter the station.This modern approach to security and convenience has several key aspects that make it an efficient and userfriendly system.1.Speed and Efficiency:The facial recognition system allows for a swift entry process. Passengers no longer need to wait in long queues to have their tickets checked manually. Instead,they can simply walk through the designated gates,where cameras capture their facial features and match them with the information on their tickets.2.Security Enhancement:The use of facial recognition for entry into the station adds an extra layer of security.It ensures that only authorized individuals with valid tickets can enter the station premises.This helps in preventing unauthorized access and potential security threats.3.Ease of Use:For passengers,the process is incredibly simple.They just need to look at the camera as they pass through the gate,and the system will do the rest.This eliminates the need to fumble with tickets or identification documents,making the process seamless.4.Reduction in Human Error:Manual checking of tickets can sometimes lead to errors, such as misreading or overlooking details.Facial recognition technology minimizes these chances by providing a more accurate and reliable verification process.5.Data Integration:The system can be integrated with other databases to check for any discrepancies or alerts related to the passenger.This can be particularly useful in maintaining a safe and secure environment within the station.6.Accessibility:For passengers with disabilities or those who have difficulty handling tickets,the facial recognition system offers a more accessible way to enter the station without any physical barriers.7.Environmental Benefits:By reducing the need for physical tickets,this technology contributes to a paperless environment,which is more ecofriendly and sustainable.8.Adaptability:In the event of a lost or forgotten ticket,the facial recognition system can still verify the passengers identity,ensuring that they are not denied entry due to a simple oversight.9.Customer Satisfaction:The convenience and speed of the facial recognition system often lead to higher customer satisfaction,as passengers appreciate the hasslefree experience.10.FutureProofing:As technology continues to advance,facial recognition systems can be updated and improved,ensuring that the train stations remain at the forefront of security and convenience.In conclusion,the use of facial recognition for train station entry is a significant step forward in making travel more efficient,secure,and userfriendly.It represents a fusion of technology and practicality that enhances the overall travel experience for passengers.。
计算机策略配置
计算机策略配置Computer policy configuration is a crucial aspect of ensuring the efficient and secure operation of computer systems. When it comes to setting up computer policies, one must consider various factors such as the organizational goals, industry regulations, and potential risks. It is essential to strike a balance between enforcing strict policies to prevent security breaches while also allowing for flexibility to accommodate the needs of users.计算机策略配置是确保计算机系统高效安全运行的关键方面。
在设置计算机策略时，人们必须考虑各种因素，如组织目标、行业规定和潜在风险。
在实施严格政策以预防安全漏洞的同时，也必须在灵活性和用户需求之间取得平衡。
One of the key considerations in computer policy configuration is determining the level of access control for users. By defining who has access to what resources, organizations can prevent unauthorized access and limit the potential damage of security breaches. However, overly restrictive access control policies can hinder productivity anduser experience. Therefore, it is important to carefully assess the access needs of users and tailor policies accordingly.在计算机策略配置中的关键考虑因素之一是确定用户的访问控制级别。
英语xsc知识点总结
英语xsc知识点总结IntroductionXSC, or XuperChain, is a high-performance blockchain platform that provides an efficient and secure solution for building decentralized applications. In this summary, we will explore the various knowledge points related to XSC, including its architecture, consensus mechanism, smart contract development, and application scenarios.1. XSC ArchitectureThe XSC architecture is designed to provide a scalable, flexible, and secure blockchain platform. It consists of several key components, including the following:- Consensus Layer: The consensus layer is responsible for validating and ordering transactions on the XSC network. XSC uses a hybrid consensus mechanism that combines the advantages of both proof-of-work (PoW) and practical Byzantine fault tolerance (PBFT) algorithms.- Networking Layer: The networking layer handles the communication between nodes on the XSC network. It ensures that information is propagated efficiently and securely throughout the network.- Transaction Layer: The transaction layer manages the creation, validation, and execution of transactions on the XSC network. It also handles the storage and retrieval of transaction data.- Smart Contract Layer: The smart contract layer enables developers to create and deploy decentralized applications (DApps) on the XSC platform. Smart contracts are executed on the XSC virtual machine, which provides a secure and isolated environment for running code.- Storage Layer: The storage layer stores the state of the blockchain, including account balances, contract code, and transaction logs. XSC uses an efficient and scalable storage mechanism to ensure fast access to data.2. XSC Consensus MechanismThe XSC consensus mechanism is a hybrid algorithm that combines the security of PoW with the efficiency of PBFT. This approach ensures that the XSC network is both secure and scalable, making it suitable for a wide range of applications.- PoW Component: In the PoW component, miners compete to solve a cryptographic puzzle in order to create new blocks and validate transactions. This process requires a significant amount of computational power, and provides a strong defense against double-spending attacks.- PBFT Component: In the PBFT component, a set of designated nodes (known as validators) participate in a multi-round voting process to achieve consensus on the order of transactions. This process is highly efficient and can tolerate a certain number of faulty nodes without compromising the security of the network.- Hybrid Consensus: By combining PoW and PBFT, XSC is able to achieve the security and decentralization of PoW with the speed and scalability of PBFT. This hybrid consensus mechanism is one of the key features that sets XSC apart from other blockchain platforms.3. XSC Smart Contract DevelopmentSmart contracts are self-executing programs that run on the XSC virtual machine. They can be used to automate the execution of business logic, manage digital assets, and interact with other contracts. The following are some key points related to smart contract development on XSC:- Programming Language: XSC supports the Solidity programming language, which is also used by the Ethereum platform. Solidity is a high-level language that is specifically designed for writing smart contracts, and provides a range of features for defining data structures, control flow, and functions.- Development Tools: XSC provides a range of development tools for smart contract development, including an integrated development environment (IDE), command-line interface (CLI), and testing framework. These tools enable developers to write, compile, and deploy smart contracts with ease.- Interoperability: XSC smart contracts are interoperable with other blockchain platforms that support the Ethereum Virtual Machine (EVM) bytecode format. This means that developers can reuse existing contracts and libraries from the Ethereum ecosystem, and benefit from a wide range of resources and expertise.- Security Considerations: Smart contracts on XSC are subject to a range of security considerations, including reentrancy attacks, integer overflows, and data manipulation. Developers should follow best practices for writing secure contracts, such as using safe math libraries, checking input parameters, and conducting thorough testing.4. XSC Application ScenariosXSC is suitable for a wide range of application scenarios, including finance, supply chain management, gaming, and identity verification. Its high performance, scalability, and security make it an ideal platform for building decentralized applications that require a reliable and efficient blockchain infrastructure.- Finance: XSC can be used to create decentralized financial applications, such as lending platforms, decentralized exchanges, and stablecoin systems. These applications can benefit from the high throughput and low latency of the XSC network, as well as its support for complex smart contracts.- Supply Chain Management: XSC can be used to track and manage goods throughout the supply chain, ensuring transparency, traceability, and authenticity. Smart contracts can be used to automate processes such as inventory management, quality control, and payment settlement.- Gaming: XSC can be used to build decentralized gaming platforms that enable players to own and trade in-game assets, participate in provably fair games, and securely exchange digital currencies. Smart contracts can be used to implement game logic, manage virtual items, and distribute rewards.- Identity Verification: XSC can be used to create secure and privacy-preserving identity verification systems that enable individuals to control their personal data and share it with trusted parties. Smart contracts can be used to establish digital identities, manage access control, and enforce data protection policies.ConclusionIn this summary, we have explored the key knowledge points related to XSC, including its architecture, consensus mechanism, smart contract development, and application scenarios. XSC is a high-performance blockchain platform that provides a scalable and secure solution for building decentralized applications. With its hybrid consensus mechanism, support for Solidity smart contracts, and wide range of application scenarios, XSC is well-positioned to drive innovation in the blockchain industry.。
可证明安全的群组匿名认证密钥协商协议
同 理 ， 也 可 以 接 收 来 自 Af ( ID f Î l ) 的 消 息
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ì í
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关 键 词 认证协议; 匿名技术; 群组技术; 密钥协商协议; 网络安全; 网络协议
中图分类号 TP393.08
文献标识码 A
doi:10.3969/j.issn.1001-0548.2011.02.023
Provably Secure Anonymous Authentication Key Agreement Protocol for Multicast Group
3. Key Laboratory of Computer Networks and Information Security of Ministry of Education, Xidian University Xi’an 710071;
门禁管理系统原理外文翻译(含原文)
门禁管理系统原理外文翻译(含原文)以及何时他们被允许进入或退出。
这是一个重要的安全措施，可以应用于各种场合，包括银行、夜总会、商店和其他需要保护的地方。
传统的机械锁和钥匙已经无法满足对安全性和便利性的要求，因此电子门禁系统成为了一种更为普遍的选择。
电子门禁系统使用计算机技术来管理访问权限，可以授权不同的人员在不同的时间进入或离开特定的区域。
凭证是授权的基础，可以是卡片、密码或其他形式的身份验证。
当授权人员在预定时间内使用凭证进入特定区域时，门会自动解锁，并记录访问信息。
如果访问被拒绝，门将保持锁定状态，并记录拒绝信息。
如果门被强行打开或保持打开时间过长，系统将发出警报。
访问控制系统还可以与其他设备集成，如摄像头、闸机和报警系统，以提高安全性。
通过使用电子门禁系统，可以更有效地管理和监控物理访问控制，保护重要的信息和资产。
Access control has historically been achieved through the useof keys and locks。
allowing individuals to enter or exit as permitted。
Mechanical locks and keys allow access to a specific area at a designated time or date。
However。
these do not provideany specific record of key usage and can easily be copied or transferred to unauthorized persons。
In the event of a lost key or revoked access。
the lock must be rekeyed。
Electronic access control solves the ns of mechanical locks and keys by using computers to grant access at predetermined times。
Unit 2 Looking into the Future (学生版) 2025年高考英语一轮复习
单元提升卷02Unit2Looking into the Future单元基础知识巩固Ⅰ.核心单词1._________________________vt.劝说;说服2._________________________adj.遥远的;远处的;疏远的;心不在焉的3._________________________adj.效率高的;有功效的4._________________________n.爱好;偏爱5._________________________n.瞬间;片刻adj.立即的;速食的;速溶的6._________________________adj.可获得的;可购得的;(人)有空的7._________________________vt.&vi.(使)结合;混合8._________________________n.职业;占领9._________________________vt.反对;抵制;阻挠10._________________________n.不存在;缺乏;缺席Ⅱ.拓展单词1.secure adj.安全的;安心的;可靠的;牢固的→_________________________n.保护措施;安全工作2.remote adj.远程的;偏远的→_________________________adv.远程地3.warn v.警告→_________________________n.警告;警示;先兆4.constant adj.不断的;重复的;不变的→_________________________adv.不断地5.normal adj.正常的→_________________________adj.不正常的;反常的6.criticize vt.批评;批判→_________________________adj.严重的;关键的;批判性的7.potential adj.可能的;潜在的n.潜力;可能性→_________________________adv.潜在地;可能地8.relevant adj.有关的;有意义的→_________________________adj.不相干的;不切题的9.innovate v.革新→_________________________n.创新;创造10.predict vt.预测;预言;预料→_________________________n.预测;预言III.核心短语1._________________________关/开(电灯、机器等)2._________________________遥控器;遥控3._________________________空调机;空调设备4._________________________日常生活5._________________________在初期;早先6._________________________着火7._________________________从这种意义上来讲8._________________________(与……)保持联系;了解(某课题或领域的情况)9._________________________展望未来10._________________________正反两方面一、单句语法填空1．A few people resisted(go)for treatment because they feared they were isolated(隔离). 2．Free repair is available a product used improperly in the first year.3．The scientists are able to calculate(accurate)when the spaceship will reach the moon. 4．Many important figures in the music world started making(predict)about Beethoven’s extraordinary future.5．Please fill in your name,address and(occupy)in this form.6．He spent a fortune on expensive wines and other(luxury).7．There was a lot of(resist)to the plan when it was first put forward.8．Bitterly(oppose)by the residents,the proposal to build a new airport was eventually cancelled. 9．His long illness and consequent(absent)put him far behind in his work.10．The term now refers to the specific style of childcentred learning(advocate)by Holt. 11．Experts advocate(take)effective measures to ensure teenagers'safety and healthy growth. 12．After a little gentle(persuade),he finally agreed that he would stick to his current job. 13．Critical thinking is critical developing creative and exciting ways to overcome challenges. 14．She was strongly(oppose)to her husband taking this trip.15．We’d take the train into the city center,switching the underground,then take a taxi.16．The station was closed for two hours because of a security(warn)．17．This new technology might even make it possible to prevent diseases from ever developing by correcting (normal)genes early on.18．Machine translation is a technology that(automatic)translates text from one language to another. 19．Research has shown that a preference junk food can result in obesity.20．When his temperature continued to rise,Tania finally persuaded him(see)a doctor. 21．Fashion is(constant)changing day by day.22．Everyone should make every effort to ensure school(secure)and prevent students from being bullied. 23．It was apparently a very effective way for them to keep track their spending.（用适当的词填空）24．In conclusion,education should be closely relevant students’needs.25．Having adopted a new method,the staff in the academy worked more(efficient)．26．Actually,sunburn is not only painful but also(potential)dangerous.27．So curious was the(detect)about the man wearing sunglasses during night that he was determined to follow him.28．There is,he said,a lack of an(integrate)national transportation policy.29．Choosing furniture is largely a matter of personal(prefer).The Book of Changes,or Zhouyi in Chinese,is one of the ancient Chinese classics with30 (emphasize)on the essential nature of changes.It is believed that Zhouyi originated from Fuxi,and further sublimed by Confucius and his disciples(门徒).高考能力提升二、阅读理解Researchers have developed a groundbreaking method of storing and handling valuable biological materials that removes the limitations of refrigerated storage.The novel method has potential applications in healthcare and scientific research.Biological materials that come from human cells,like enzymes,proteins,and antibodies,are crucial to developing new medicines and diagnostic tests.And they’re fragile.Extremely temperaturesensitive,they require a constant temperature during storage,handling,and transportation.If not stored or handled correctly,these materials will be inactive,which can be costly.Most biological materials are stored as liquids or freezedried powders and kept at low temperatures for the duration of their shelf life.This is achieved through a complex integrated system of refrigerators and freezers known as the cold chain.This requires a significant investment in equipment and infrastructure,making it expensive to maintain,and makes the cold chain prone to shipping delays,power outages,equipment failure and human error.Inspired from the home medicine cabinet(储藏柜),where medications are stored in the form of liquids, powderfilled capsules,and tablets,researchers at California Polytechnic State University have developed a new storage platform based on the humble table t that would enable biological materials to be compressed(压缩)into a solid state.Tablets provide advantages to the storage and handling of biomaterials that the cold chain doesn’t.For one thing,they can be stored at room temperature.And,when they’re required,the tablet can be dissolved in water.“Our innovation makes storing and using biomaterials as straightforward as an effervescent tablet(泡腾片).Just drop it into water,mix,and it’s ready to go,”said the researcher of the study.The researchers say their new tabletbased storage and handling method is easy to use and doesn’t require special training,making it suitable for many applications.They also see potential uses beyond just improving the storage and handling of biological materials.By modifying(修改)the tablet coatings,this solidstate storage platform could withstand extreme conditions like heat,humidity,and chemicals.These changes might eventually allow injectable medications,such as insulin,to be taken orally.31．What is a special requirement to store biological materials?A．Constant temperature maintenance.B．Exposure to various temperatures.C．Periodically freezing and melting.D．Direct contact with air.32．What is the researchers’attitude to their storage method?A．Favorable.B．Skeptical.C．Disappointed.D．Grateful.33．Which word can replace the underlined word“withstand”in the last paragraph?A．Demonstrate.B．Stand.C．Adopt.D．Distinguish.34．What is the text mainly about?A．Challenges of storing biological materials.B．The making process of effervescent tablets.C．Healthcare applications of biological materials.D．A new table t storage method of biological materials.If a pancake could dream,it might long for legs so it could jump off your breakfast plate in pursuit of a better,unchewed life.But legs aren’t necessary for something as flat as a pancake to jump around.A group of scientists have designed a pancakeshaped robot that can jump several times per second and higher than seven times its body height.The new robot named Hop,which swiftly jumps without feet,is an important contribution to the soft robotics.Many ground robots move by rolling or walking.But it’s more efficient for robots to jump over obstacles than to go around them.Although jumping can offer some robots a competitive edge,engineering that ability has been a challenge for robotics researchers.Some soft robots that store energy can perform a single impressive jump very infrequently.Some lightweight soft robots that don’t store energy can jump frequently but can’t jump high orfar enough to successfully cross an obstacle.For inspiration,the researchers looked to gall midge larvae(瘿蚊幼虫)that miraculously throw themselves across distances30times as long as their loglike bodies.A gall midge larva bends its body and squeezes the liquid in its body to one end,making it rigid.The accumulation of liquid builds up pressure,and releasing the pressure sends it soaring.The robot’s body doesn’t resemble that of a gall midge larva,but it jumps like one.Its body is made of two small plastic bags printed with electrodes(电极);the front bag is filled with liquid and the back one is filled with the same volume of air.The robot uses electricity to drive the flow of liquid,which causes the body to bend and generate force with the ground,resulting in a jump.And the air bag imitates the function of an animal’s tail,helping the robot maintain a stable position.While the robot is currently restricted to Earth,it might be right at home exploring another planet.If this is true,the researchers’robot might jump over dust y rocks and large holes on the moon or Mars,going where no pancake has gone before.35．What does the author want to show by mentioning a pancake?A．A pancake’s dream to have legs is unrealistic.B．A robot is capable of serving a good pancake.C．A pancakeshaped robot can jump without legs.D．Research on pancakes advances our understanding of robots.36．What difficultly do robotics researchers have in developing Hop according to Paragraph2?A．Hop’s avoiding an obstacle.B．Hop’s moving around by rolling.C．Hop’s performing one remarkable jump.D．Hop’s jumping high and far continuously.37．What inspiration do the researchers draw from gall midge larvae?A．They are shaped like logs.B．They have tails to change positions.C．They bend their bodies and increase force.D．They are filled with liquid and have rigid bodies.38．What is the author’s attitude to the future of the new robot?A．Intolerant.B．Positive.C．Doubtful.D．Unclear.三、完形填空When searching for a science fair project,many children scratch(挠)their heads.They39to find ideas and give up easily.Yet,there are many40.Mesk Abdalsalam is one.When41her brother’s discomfort as he scratched the dry skin on his elbows,Mesk got42from it.Mesk realized that software could be a43to her brother and others when a doctor is44.Mesk,an upcoming11thgrade student,was one of the45at the Regeneron International Science and Engineering Fair(国际科学与工程大奖赛),where Mesk and others46software solutions to challenging problems.Living in Palestine,Mesk recognized it is extremely47to get a doctor’s appointment.It took nearly six months for her brother to see a doctor.48,those dry areas on his arms turned out to be eczema(湿疹).Motivated by the situation,Mesk took advantage of artificial intelligence to49the process.The 16yearold student designed her innovative software to swiftly50skin conditions based on photographs.Her smartphone app,called Derma X,can diagnose diverse skin diseases.She51the software using over50,000publicly available pictures related to skin diseases.Due to the large database,the result of Derma X is52to a great extent.According to Mesk,the app is userfriendly,and it has been53by many including a doctor who thought highly of it.Derma X earned Mesk fourth place at he ISEF and a$500prize.39．A．offer B．promise C．struggle D．hurry40．A．examples B．exceptions C．followers D．scientists41．A．causing B．guessing C．expressing D．observing 42．A．permission B．trust C．support D．inspiration43．A．helper B．mess C．disaster D．symbol44．A．impatient B．unavailable C．thoughtless D．unkind45．A．leaders B．organizers C．competitors D．guards 46．A．presented B．questioned C．replaced D．developed 47．A．expensive B．risky C．difficult D．common 48．A．Doubtfully B．Accidentally C．Instantly.D．Eventually49．A．take down B．speed up C．stick to.D．watch for 50．A．improve B．control C．determine D．store51．A．trained B．advertised C．named D．identified 52．A．readable/B．reliable C．predictable D．changeable53．A．fixed B．accepted C．guaranteed D．revised阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。
学校管理制度的形容词英语
In order to ensure the smooth operation and high-quality education of a school, a comprehensive and effective school management system is essential. This system plays a crucial role in regulating school activities, maintaining discipline, and fostering a harmonious learning environment. The following adjectives describe the key characteristicsof a well-managed school management system.1. Comprehensive: A comprehensive school management system coversvarious aspects of school administration, including student management, curriculum planning, teaching affairs, personnel management, andfinancial management. It integrates different modules and functions to provide a holistic view of the school's operations.2. Efficient: An efficient school management system streamlines processes, reduces redundant tasks, and minimizes time wastage. It helps administrators, teachers, and students to focus on their core responsibilities, thereby enhancing overall productivity.3. User-friendly: A user-friendly school management system is easy to navigate and operate, even for individuals without technical expertise. It offers intuitive interfaces, clear instructions, and helpful tooltips, ensuring that users can quickly adapt to the system and utilize its features effectively.4. Secure: A secure school management system protects sensitive data, such as student and staff information, from unauthorized access andcyber threats. It employs robust encryption techniques, access controls, and regular security audits to maintain data integrity and privacy.5. Scalable: A scalable school management system can accommodate the growing needs of a school as it expands its facilities, student population, and staff. It allows for easy integration of new features, modules, and functionalities without disrupting existing operations.6. Adaptable: An adaptable school management system can be customized to meet the specific requirements of different schools. It offers configurable settings, customizable reports, and flexible workflows, enabling administrators to tailor the system to their unique needs.7. Collaborative: A collaborative school management system fosters communication and collaboration among administrators, teachers, students, and parents. It provides a platform for sharing information, discussing issues, and resolving conflicts, thereby promoting a sense of community within the school.8. Robust: A robust school management system is designed to handle large volumes of data and transactions without experiencing performance issues. It is built on stable and reliable infrastructure, ensuringuninterrupted access to critical information and services.9. Accurate: An accurate school management system ensures that data is recorded, stored, and reported correctly. It minimizes errors and discrepancies, helping administrators make informed decisions based on reliable information.10. Intuitive: An intuitive school management system is designed withthe end-user in mind. It incorporates familiar concepts and workflows, making it easy for users to understand and navigate the system without extensive training.11. Time-saving: A time-saving school management system automates repetitive tasks and simplifies complex processes. It allows administrators to focus on strategic initiatives and student support, rather than getting bogged down by administrative duties.12. Sustainable: A sustainable school management system is designed to minimize environmental impact and promote sustainability. It encourages energy-efficient practices, reduces paper usage, and optimizes resource allocation to create a greener school environment.In conclusion, a well-managed school management system should possess these adjectives to ensure the efficient, secure, and effectiveoperation of a school. By incorporating these qualities, schools can create a conducive learning environment that supports student growth and development.。
FINE-GRAINED FORWARD-SECURE SIGNATURE SCHEME
专利名称：FINE-GRAINED FORWARD-SECURESIGNATURE SCHEME发明人：Jan Camenisch,Maciel Koprowski申请号：US12120349申请日：20080514公开号：US20090316886A1公开日：20091224专利内容由知识产权出版社提供专利附图：摘要：The presented methods form the basis of a forward-secure signature scheme that is provably secure. Moreover, the presented methods form also the basis of a fine-grained forward-secure signature scheme that is secure and efficient. The scheme allowsto react immediately on hacker break-ins such that signatures from the past still remain valid without re-issuing them and future signature values based on an exposed key can be identified accordingly. In general, each prepared signature carries an ascending index such that once an index is used, no lower index can be used to sign. Then, whenever an adversary breaks in, an honest signer can just announce the current index, e.g., by signing some special message with respect to the current index, as part of the revocation message for the current time period. It is then understood that all signatures made in prior time periods as well as all signatures make in the revoked period up to the announced index are valid, i.e., non-reputable.申请人：Jan Camenisch,Maciel Koprowski地址：Rueschlikon CH,Gdvnia PL国籍：CH,PL更多信息请下载全文后查看。