Access control system priceงาน

ด่วน!!! รับสมัคร freelance เขียนแบบ Shop drawing และ As Built drawing งานระบบ IP,Telephone,CCTV,Rack,RCU,Keycard holder (โครงการ ก่อสร้างโรงแรมย่านกทม.) รับงานไปทำเป็นJOB คุณสมบัติ 1. มีประสบการณ์งานเขียนแบบระบบ IP,Telephone,CCTV,Rack,RCU,Keycard holder 2. ใช้โปรแกรม Auto cad ในการเขียนแบบ 3. เขียนแบบรายละเอียด Shop drawing ตามที่ได้รับมอบหมายเพื่อใช้ในการทำงาน 4.มีความเข้าใจในรายละเอียดการเขียนแบบโครงสร้างและสถาปัตย์ 5.สามารถเขียนแบบแปลน,รูปด้าน,รูปตัด ได้ 6.จัดทำแบบ As built เพื่อส่งมอบให้ผู้ว่าจ้าง 7. มีความรับผิดชอบส่งงานตรงเวลา ไม่ต้องคอยตาม ติดต่อได้ตลอด และสามารถทำงานภายใต้ระยะเวลาที่จำกัดได้ 8. สามารถเดินทางเข้ามาพบ เพื่อคุยรายละเอียดงานได้เมื่อมีการนัดหมาย สถานที่ตั้งบริษัท ซอยสุขุมวิท 64 (ติด BTS ปุณณวิถี) , พระโขนงใต้, กรุงเทพฯ

ทำระบบการเลี้ยงปศุสัตว์ (Livestock Management) นำเสนอเบื้องต้นของ Development Tools: Front-end: Angular JS Language: .Net Core (Web responsive) Database: SQL Server/Azure SQL Database Operation System: Windows Cloud Solution :Hybrid Azure

ต้องการวิศวกรงานระบบ cctv, access control, telephone, internet, turnstile, data center, fire alarm คุณสมบัติ 1. ออกแบบ, ถอดแบบ, งานระบบสื่อสาร ระบบ security 2. ประเมินหน้างาน 3. ทำใบเสนอราคา, ประสานงาน suppliers 4. ควบคุมงาน, ควบคุมช่าง 5. ไม่ต้องประจำออฟฟิศ, ทำงานที่บ้านได้ แต่ต้องออกหน้างานเมื่อต้องประเมินราคา หรือต้องเข้าควบคุมงาน 6. โบนัสจากโปรเจคที่คุม สนใจติดต่อ คุณหน่อย (Removed by Freelancer.com admin)

ต้องการวิศวกรงานระบบ cctv, access control, telephone, internet, turnstile, data center, fire alarm คุณสมบัติ 1. ออกแบบ, ถอดแบบ, งานระบบสื่อสาร ระบบ security 2. ประเมินหน้างาน 3. ทำใบเสนอราคา, ประสานงาน suppliers 4. ควบคุมงาน, ควบคุมช่าง 5. ไม่ต้องประจำออฟฟิศ, ทำงานที่บ้านได้ แต่ต้องออกหน้างานเมื่อต้องประเมินราคา หรือต้องเข้าควบคุมงาน 6. โบนัสจากโปรเจคที่คุม สนใจติดต่อ คุณหน่อย (Removed by Freelancer.com admin)

ต้องการโปรแกรมที่หน้าตาคล้ายๆกับ โปรแกรม Excel เนื่องจากระบบเดิมของลูกค้าเป็น Excel ทั้งหมด ลูกค้าจึงมีความต้องการใช้งานโปรแกรมที่มีลักษณะการแสดงผลต่างๆให้เหมือนกับ Excel แต่ให้สามารถจัดการข้อมูล รวมไปถึงกรองดูข้อมูลที่ต้องการให้สะดวกกว่าเดิมยิ่งขึ้น ออกรายงานเบื้องต้นได้ Requirement ตามไฟล์แนบ

ต้องการระบบรับ Realtime feed จากตลาดหลักทรัพย์ (SET/TFEX) ข้อมูลที่ต้องการได้แก่ Ticker/BidAsk5ช่อง/CandleStick 1MIN/15MIN/30MIN/60MIN

hacking on a whatsapp account without access to the target's phone

...ทับซ้อนกัน สามารถย่อ-ขยายภาพได้ จะไม่มีการ rotate(หมุนภาพ) เนื่องจากข้อจำกัดด้านกราฟฟิค เมื่อทำการขยายภาพ ภาพแผนที่จะเปลี่ยนจากตัวlayerที่มีความละเอียดต่ำกว่าไปเป็นตัวlayerที่มีความละเอียดสูงกว่า (หากเป็นไปได้ อยากให้มี animation การเปลี่ยนภาพ เป็นแบบ fade in และ fade out ภาพที่ความละเอียดต่ำจะค่อยๆเลือนหายไปในขณะที่ภาพที่มีความละเอียดสูงค่อยๆปรากฏขึ้นมา )* 2 หากตัวอุปกรณ์ support location access ให้ใช้ Location Manager บอกตำแหน่งของอุปกรณ์นั้น บนภาพแผนที่ offline (มีการระบุbearingหรือไม่ก็ได้)* ปริมาณงาน : ในแอพพลิเคชั่นประกอบไปด้วยจำนวนหน้าpageดังนี้ หน้าหลัก 1 หน้า ไว้ให้userเลือกแผนที่ที่ต้องการ ออกแบง่ายๆมีเพียง button link ไปยังหน้าอื่น หน้าแผนที่ 8 หน้า ประกอบไปด้วย แผนที่ offline 3 layer จำนวน 3 หน้า แผนที่ offline 2 layer จำนวน 4 หน้า ...

Programming with c # or C ++ connected to the camera. Face Detection with Face snapshot datetime into the database with MySQL. CCTV ( Detection Face of multiple pages on a single ticket )

PBX System SIP Server on Cloud สำหรับธุรกิจขนาดกลางและเล็ก โดยไม่ต้องลงทุนอุปกรณ์ Server PABX PBX ต่างๆ ไม่ต้องเตรียม infra ให้ยุ่งอยาก เคลื่อนย้าย ไปตาม Site สะดวก โทรหา site to site ฟรี บริการค่าโทรแบบเหมา แบบรายนาที ทั่วโลก

ออกแบบโปรแกรมคอนโทรลโดยใช้ telemecanique zelio logic ควบคุม design program PLC Control with zelio logic Job by Job

ออกแบบโปรแกรมคอนโทรลโดยใช้ telemecanique zelio logic ควบคุม design program PLC Control with zelio logic Job by Job

รับเขียน ออกแบบ แก้ไข software ทุกประเภท ทั้งงานทั่วไป และ ในโรงงานอุตสาหกรรม ประสบการณ์ใน บริษัท และ โรงงานอุตสาหกรรม มากกว่า 10 ปี -VB -Delphi -MS SQL -Oracle -MS Access -Barcode reader, RFID - อุปกรณ์เชื่อมต่อกับระบบคอมพิวเตอร์ I/O Card, Machine controller และ อื่นๆ เรามีความเป็นมืออาชีพ ทำงานเร็ว คุณภาพเยี่ยม คุ้มค่า คุ้มราคาแน่นอน ติดต่อเรา

I'm seeking a skilled PCB circuit designer to create a digital circuit f. The primary function of the circuit is PWM Motor Speed Control Key requirements: Input supply voltage: DC 2.5V-25V The maximum output power: 350W The maximum continuous output current :15A The overload and short circuit protecting current is 25A PWM frequency: 25-30kHz Duty Cycle adjustable: 0-100% The operation environment temperature:-20℃-40℃ Ideal freelancer would have: - Proven experience in digital PCB circuit design - Strong knowledge of signal amplification principles - Familiarity with radio technology and its requirements - Ability to optimize circuits for low gain

Idea is to be able to manage my current users in my dev cluster, most of them have cloudadmin permissions, idea is to have a whitelist of users, I will be providing you access to my API Keys and repo for this, also the whitelist based on the users email, I am using azure devops to do CI-CD Tasks, idea is to create a yaml file pipeline able tu run this process everyday at midnight.

I am seeking an experienced engineer to design and implement a two-axis machine control system that is capable of: - Effectively controlling and managing the movements of the system along two axes with a LIMITED RANGE. Your expertise in designing systems with the necessary navigation strategies and motion control algorithms will be required. - Providing real-time position feedback to the user. Your extensive understanding of feedback mechanisms particular to these types of systems is a must. Ideal expertise for the job includes: - Comprehensive knowledge in machine systems control and design. - A thorough understanding of motion control strategies. - A background in data analysis and logs processing. The machine is a Bandsaw to cut small logs ...

I urgently need a professional who can resolve an issue that arose after I updated Webmin/Virtualmin/Cloudmin with the Tomcat module installed. As a result of this update, both my Wordpress websites and Java application are not working. When attempting to access the websites, a 503 Service Unavailable error is displayed. Key Tasks: - Diagnose the issue: Identify the root cause of the malfunction and provide a detailed explanation of what caused the websites and Java application to stop working. - Implement a solution: Apply the necessary steps to rectify the situation and restore full functionality to both the websites and the Java application. - Testing: Ensure that the fix is effective by thoroughly testing the websites and the Java application. Skills and Experience: - Profoun...

I'm in need of a skilled individual who is proficient in blockchain and wallet analysis, specifically on the Arbitrum blockchain. The project involve...particularly on the Arbitrum blockchain - Ability to identify patterns and trends in transactions - Proficient in analyzing wallet balances and activities Deliverables: - A comprehensive report that includes methodology, analysis, and conclusion - The report should be presented in a combination of written format and visual presentation (charts and graphs) Please note that I will provide you with access to the necessary pages and data on Arbiscan. Your task will be to fetch data, analyze it, and present it in a detailed, yet accessible manner. If you are able to deliver this work to a high standard, I will have further projects...

...engaging Employee Pre-Verification system. This system will focus on Background check and Referral check. Key Functionalities: - **Background Check**: This system should have the ability to conduct background checks on potential employees. This can involve checking criminal records, credit history, and other relevant information. - **Referral Check**: The system should also incorporate a referral check system. This can help verify the authenticity of the references provided by the employee. User Interface: - The UI of this system should be interactive and engaging. This will ensure that the system is not only functional but also user-friendly. Reporting System: - The system should generate reports in two ways: - **Down...

I'm on the lookout for an experienced video editor with superior skills in advanced editing techniques including color correction, special effects, and audio enhancement. The projec...techniques including color correction, special effects, and audio enhancement. The project comprises editing a video of a duration exceeding 10 minutes. Skills Required: - Expertise in advanced video editing techniques - Proficiency in color correction - Special effects implementation - Audio enhancement abilities Please note, a storyboard or script isn't provided, allowing you full creative control to bring the footage to life. Applications from individuals with a knack for creativity are particularly welcomed. Your portfolio demonstrating your past work would be advantageous during th...

...incidencias y disputas, proporcionando asistencia inmediata. 3. Ubicación en Tiempo Real: Los clientes podrán compartir la ubicación del vehículo en tiempo real. 4. Seguimiento GPS: Función para monitorizar el viaje en tiempo real, asegurando la transparencia y seguridad. 5. Programación de Viajes: Posibilidad de reservar viajes con antelación según las necesidades del cliente. ADMINISTRADOR 1. Panel de Control: El administrador tendrá acceso a un panel con un listado de choferes por categoría (transporte de pasajeros, liviano, pesado). 2. Monitorización de Estado: El panel mostrará el estado actual de cada conductor, incluyendo su puntuación, créditos disponibles y habilitaciones. 3...

I'm in need of a Point of Sale (POS) interface that works on both Android and iOS devices. The main functionality requirement for this interface is barcode scanning. Additionally, I need this POS interface to support multiple user profiles, each with their unique access levels. Key Project Requirements: - Develop a Point of Sale interface that functions on Android and iOS platforms. - Implement barcode scanning capabilities within the interface. - Create a multi-user system with different access levels for each user. I'm looking for a developer with experience in: - Android and iOS development - Barcode scanning integration - User management systems

... This will resonate well with the target audience and reflect the nature of the services I provide. Distribution Plan: - The PDF will be used in a variety of situations, so it must be adaptable. I intend to: - Email the document to clients. The design should be compatible with and visually appealing in email format. - Make it available for download on my website. The PDF should be easy to access and view on a digital platform. - Print physical copies for meetings. The document should be designed with print quality in mind, ensuring that it looks polished and professional when physically distributed. To be successful in this project, you should have: - Proven experience in graphic design, specifically in crafting corporate documents. - Strong understanding of layout, typog...

I'm experiencing unauthorized accounts being opened with my information all across various websites most of which I’ve never heard of or visited. Also there’s nonstop access to my existing online accounts and noticing suspicious activity on my devices. While I've taken measures on some accounts to secure them, it's not enough and I need professional intervention. The compromised accounts include apps, social media, GPS and financial. The activity on my devices sparks concern, particularly regarding showing activity in my history I did not do and I'm looking for expert guidance I have already wiped my device multiple times and have even gone as far as establishing all new digital identifiers such as new phone number, email, and Apple ID to no avai...

I'm looking for an adept programmer who can create a system that automates the process of filling online forms with data. The ideal candidate should have: - Extensive experience in Automation programming - Strong knowledge of form-based online platforms - Proficiency in cross-verifying data with existing databases Key tasks: - Design and set up an automation system to accurately fill online forms with data. - Implement a cross-verification function that checks the data to be filled against existing data to ensure its accuracy. My expectations for this project are a system that will accurately and automatically populate online forms, saving valuable time and reducing potential errors caused by manual data entry. Your ability to add a cross-verification step ...

I am seeking an experienced engineer to design and implement a two-axis machine control system that is capable of: - Effectively controlling and managing the movements of the system along two axes with a LIMITED RANGE. Your expertise in designing systems with the necessary navigation strategies and motion control algorithms will be required. - Providing real-time position feedback to the user. Your extensive understanding of feedback mechanisms particular to these types of systems is a must. Ideal expertise for the job includes: - Comprehensive knowledge in machine systems control and design. - A thorough understanding of motion control strategies. - A background in data analysis and logs processing. The machine is a Bandsaw to cut small logs ...

My Server that I access via remote desktop services has stopped allowing remote desktop access. it was working fine for months, now it is not. the error message is: "NO remote desktop license server is available. REmote desktop services will stop working because this computer is past its grace period and has not contacted at least a valid windows server 2019 License." I had this issue before about 4 months after I initially set up the server, I went through multiple steps to register and it began working again for the past 5 months or so, and now it has stopped again. I need someone to help configure/reconfigure the server properly to allow remote desktop to function properly. I have physical access to the server and can work at that server terminal to...

...integrates a machine learning model. The primary goal of this application will be to evaluate student applications in real-time. Key Features: - Real-time evaluation feedback: The application should provide instant feedback on student applications, based on the integrated machine learning model. - User authentication: The application should include a secure user authentication system to ensure only authorized users can access and use it. - Data visualization: The application should have data visualization capabilities to help users understand the evaluation process and results better. Integration: - The application will need to integrate with existing systems or databases. The specifics of this integration can be discussed in further detail with the chosen developer. S...

I need a machine learning model developed in Python. This model should be able to evaluate prospective student applications by...should be able to evaluate prospective student applications by comparing them to historical data sets. The goal is to classify and sort the new applicants efficiently. Key Requirements: - Develop a classification-based machine learning model in Python - Understand and work with historical data sets to evaluate new student applications - Deploy the model in a web application format for ease of access Ideal Skills and Experience: - Strong background in machine learning and Python - Previous experience in developing classification models - Ability to understand and work with large data sets - Prior experience with deploying machine learning models in web ap...

I need a tech-savvy professional with vast experience in social media account recovery. I lost control of my old Instagram account but I have the username. My main goal is to regain access and permanently delete the account. Key Responsibilities: - Recover lost Instagram account using the provided username - Delete the account upon recovery Essential Skills: - Knowledge and expertise in Instagram account recovery - Experience in similar projects - Understanding of privacy and data security protocols I can provide a driver's license as proof of identity. Confidentiality and transparency during this process are paramount, and I look forward to a successful collaboration.

โปรดลงทะเบียน หรือเข้าสู่ระบบ เพื่อดูรายละเอียด

I'm looking for a skilled Wikipedia editor to update a public figure's Wikipedia page with verifiable, online sources I will provide. Key Requirements: - Skilled Wikipedia Editor: You should have a proven track record of editing Wikipedia pages, ideally public figure pages. - Access to Online Sources: You will need to be able to access and incorporate the online sources I provide.

All the informations are there:

I need a bash script that can import and export data from my database to CSV files. Ideal candidate should be able to: - Create a bash script that can effectively import and export data - Have experience working with database management systems such as MySQL, PostgreSQL, or MongoDB - Ensure that the script securely creates user accounts and manages their access to the database. The script will be used for daily database management tasks, so it needs to be reliable, secure, and efficient.

I need a talented web developer to create a small, yet impactful landing page for my advertising company. Additionally, I require the integration of a payment system and a user registration/login system. Key Requirements: - The landing page needs to be appealing and effective in showcasing our services. - The payment integration must support both Stripe and Credit Card Direct Processing. - A secure user registration and login system should be implemented using email and password. Ideal Candidate: - Proficient in web development with experience in creating user-friendly landing pages. - Prior experience in integrating payment systems, particularly Stripe and Credit Card Direct Processing. - Familiar with implementing secure user login systems with email and password ...

I am looking for an experienced PHP developer to help me domify some software. Specifically, I need an inventory management system built from raw PHP. Key Features: - Inventory management: I need a system that can help me keep track of my inventory in real-time. This system should be able to handle multiple products and update their status as needed. Current Inventory Management: I am currently using another software to manage my inventory. However, it does not meet my needs and I am looking for a more tailored solution. Ideal Skills: - Strong proficiency in PHP - Experience with building Inventory Management Systems - Knowledge of raw PHP If you have experience in building similar systems, I would love to hear from you.

**Job Description:** **Title:** Development and Implementation of an Outgoing Predictive Dialer System **Description:** We are seeking an experienced freelancer to develop and implement a robust outgoing predictive dialer system for our call center operations. The ideal candidate will have a strong background in telephony systems, database management, and CRM integration. The dialer should support dynamic caller ID, IP whitelisting, multiple campaigns, and a minimum of 10 representatives. **Responsibilities:** - Develop an outgoing predictive dialer system that integrates with our existing telephony infrastructure. - Implement dynamic caller ID functionality. - Ensure the system supports IP whitelisting for added security. - Configure the dialer to handle mu...

As part of my endeavor...will be to prevent unauthorized access. Here's what I require: * In-depth evaluation and analysis of our data security framework * Identification of any potential vulnerabilities and security loopholes * Devise strategies to fortify the data security dimensions against malicious hackers The ideal candidate should possess: * Extensive experience in ethical hacking and data security * Strong analytical skills and a keen eye for spotting weaknesses and vulnerabilities in data security * Ability to devise actionable strategies to address the identified issues Rest assured, full access to the necessary systems will be granted for the successful execution of the job. Please note that a thorough professional background check will be performed be...

...understanding of websockets and their use in real-time applications. Strong problem-solving skills and attention to detail. Excellent communication skills and ability to work collaboratively with stakeholders. Commitment to delivering high-quality code and thorough documentation. Preferred Qualifications: Experience with cross-platform development for both Windows and MacOS. Familiarity with version control systems like Git. Knowledge of backend technologies and integration is a plus. Prior experience with agile development methodologies. How to Apply: Please submit your proposal including: A brief introduction of yourself and your experience relevant to this project. Examples of previous projects or similar desktop applications you have developed. An outline of your approac...

I'm in need of a professional web developer to create a platform that serves as an agent management website. The website should have an elegant interface, account logins, and a simple credit system that can be administered by an admin account. Key Features: - Agent Registration and Login: The website should allow agents to create accounts and log in securely. - Profile Management: Agents should be able to edit and manage their profiles. - Commission Tracking: The system should track and calculate commissions for each agent. The specific functionality of the agent registration and login feature is not fully defined yet. The ideal candidate for this project should have experience in building similar systems, understand user account management, and have the ability to de...

I'm looking for an experienced full stack developer to help me with a project. This role requires a professional who is well-versed in both front-end and back-end coding. i need someone with great experience to deploy my webesite, i will give access to my sourcecode

I'm seeking a professional web developer, extremely proficient in PHP and MySQL who can add and upgrades modules into our POS system. - Abilities: You should have substantial experience and demonstrated proficiency in building complex, user-friendly websites. Your PHP and MySQL skills must be exemplary. - Preferred Framework: I don't have a particular PHP framework preference. You can use the one you're comfortable with.

I'm having an issue updating my WordPress site plugins due to a checksum error. Along with this, I can't download newer versions of WordPress. I also need to make sure that my website is compatible with Consent Mode V2. Your responsibilities include: - Diagnosing and resolving the checksum error that prevents me from updating plugins and downloading ...other issues that could be causing the problem. Skills and experience needed: - Proficiency in WordPress, its functioning, and its common issues. - Experience with plugin management and troubleshooting. - Familiarity with web compliance, especially with Consent Mode V2. - Ability to work around potential issues caused by uncertain changes to the site. I'll provide you with WordPress admin access so you can troubl...

As I am looking for an experienced Android app developer, I have a vision for an educational app that helps learners to access educational content with ease. Detailed walk through will be provided on call as I have the front end concept simulation ready. However here are some... Key Project Features: - User login & Registration: We require a secure user login and registration setup that protects the user's data and ensures only registered users have access to our app. - Requires Map integration and working with object on a map (google maps/mapbox, etc). - Implementation of Modal screens. Ideally, the freelancer should have a robust experience in the development of Android apps. The freelancer should be well-versed in creating apps that offer user-friendly inte...

...information is to be taken from Local Planning Authority official websites (publicly available information and no logins required). An in-depth knowledge of planning submissions and permissions and BNG is NOT needed. What is however required is accurate information to be taken from those websites and converted into a database for us. - This work can be done remotely and only requires a computer and access to the internet. - The geographical focus of the UK planning authorities we require information from will be provided to you in a prioritised list This is a meticulous role that requires sound organizational skills, attention to detail and an ability to efficiently analyse and interpret information. Candidates with extensive experience in market research, particularly wit...

...only 2 Product Name columns (in which the "product details of input file column 2" are listed. (example VAT file attached) 3- The app must check that all the lines present in column D "Product details" of the input file 1 are present in column A of the VAT output file and we have a value in column B. If there are lines that are not present or do not have a value, you must report them in the VAT control output file report (attached). 4- Starting from input file 1 (attached), look for the lines of column D "product details" in column A of the newly created VAT output file and insert the respective value present in column B of the file in column K of the example output file (attached). VAT output. 5- Starting from the output file just created, create a ...

...live sound engineer to ensure the best audio experience for our audience. - Event Type: Your main focus will be to manage the live sound at a rock concert, ensuring a vibrant, smooth, and balanced output. - Music Genre: Having experience with rock music is critical as you'll be balancing and mixing sounds for such a performance. - Sound Equipment: We've got the basics covered; you will have access to microphones, speakers and mixers at the venue. Your expertise on how to utilize these equipment to create the quintessential rock concert atmosphere will be key. Ideal candidate should have: - experience as live sound engineer, ideally with rock concerts. - comfortable level of skill in sound mixing and balancing. - Familiarity with the use and management of sound syste...

I am currently developing the field oriented control system for a permanent magnet synchronous motor. My goal is to improve the speed response, specifically the acceleration time, deceleration time, and steady state error. The project involves the tuning of PI controllers within the system, meant to enhance its overall performance. For this task, a proficient knowledge of control systems, system modeling, and tuning methods is required. Previous experience with PI tuning is beneficial. Currently, MATLAB/Simulink is being used for modeling and system simulation, hence proficiency in it is crucial. Ideally, the candidate will have extensive experience using MATLAB for complex motor control simulations. However, I haven't defined the s...

I am looking for an expert with solid experience in Field Oriented Control (FOC) of Permanent Magnet Synchronous Motors (PMSM) who can help tune my PI controllers for more precise speed control. Here are the specifics: - I have an established model using MATLAB/Simulink, and the PI controllers are already implemented. - The key outcome I want is to enhance the accuracy of the speed response. The ideal candidate will have: - Extensive knowledge and experience with PMSM and FOC. - Proven background in tuning PI controllers. - Strong proficiency in MATLAB/Simulink. Your task will involve analyzing the existing model, suggesting enhancements for the PI controllers, and implementing these changes to achieve a more precise speed response.

...the needs of individuals and should be fully responsive as I want it to be accessible across various devices, particularly mobile. Key Features: - User Registration and Login: A seamless and secure process for users to create accounts and log in. - File Upload and Storage: A functionality that allows users to upload and store files. This should include a system for easy access and organization. - Payment Processing: A secure payment system that enables users to make transactions within the app. Ideal Skills & Experience: - Proficiency in web development, particularly in creating user-friendly interfaces. - Experience with security protocols for managing user data and payment processing. - Strong knowledge of cloud storage and data management systems for file ...