How to explain selenium automation framework in interviewmunkák

...szuperképességként tekintünk!; Projektmenedzseri szemlélet – nem lesz „főnököd”, az eredményeidért Te leszel felelős. Nem tudod feladatot visszadobni csak úgy senkinek (nincs más helyetted, aki megcsinálja), ezért fontos, hogy proaktívan, javaslattal állj elő minden feladat megoldására.; Nagyon fontos, hogy „Mindent lehet, csak akarni kell” hozzáállásod legyen; Használsz GIT-et, ismered a gyakori framework-öket, használod őket és pontosan dokumentálsz. Emberileg ezek NEM jellemzőek Rád: Nem jellemző Rád az, hogy „Ez a nap is jól indul…” mondat ha...

Egy meglevő PHP projekthez keresünk rövid scriptelési munkára vállalkozót. A feladat már létező rendszer kiegészítése. A PILOT során adatbázisból érkező kérdések inputjainak (önértékelés számmal) begyűjtése történik. A self assessmentet a tesztfelhasználók weben érik el (framework up and running, development környezet VPN/SCPn keresztül izoláltan elérhető). A fázis I-ben (teszt környezet): *már kialakított és regisztrált (kb 10) usereknek önértékelést számadattal (1-15) *ill pár kérd...

Technikai információk: alkalmazott komponen...integrálásra: ◦ Simplepay – alkalmazáson belüli fizetés biztosítása, illetve előfizetések automatikus megújítása ◦ Billingo – Számlázás ◦ Sendgrid – Emailek kiküldése Elvégzendő feladatok • Tesztrendszer létrehozása: End to end és unit tesztrendszer létrehozása a későbbi kódváltoztatások esetleges hibáinak kiszűrésére. DoD: Web Komponens - A jelenleg 2.x Vue - Nuxt alapokról áttérni az aktuális 3.x-re. Az npm audit által jelentett 46 sebezhetőséget 0-ra reduk&aa...

Pythonban jártas webfejlesztőt keresik aki segít REST API végponthoz tartozó üzleti logikák megvalósításában.

Sziasztok. Meglévő egyszerű mobil applikációmban szeretnék módosítani ezt-azt, leginkább a kinézetet. Erre keresek egy gyors, ügyes fejlesztőt. Ja és csak magyarul! Elegem van a félreértésekből és az időpocsékolásokból. Köszi.

...programming - Version control (git) - Agile software development (Scrum) - Spring framework (Spring DI, Spring MVC, Spring Security, - Spring data, Thyemeleaf) - REST - JPA Munkavégzés helye: Budapest, 3. kerület Our company deals with Junior Programmer training, where our trainers are mainly freelancer developers. What we offer: - flexible working hours (up to 1-2 times a week, but full-time work) - start-up, youthful, cheerful office - competitive salary - youthful, good-looking team Knowledge required for work: - Basic programming skills (Java) - Algorithms, data stuctures - Object Oriented programming - Version control (git) - Agile software development (Scrum) - Spring framework (Spring DI, Spring MVC, Sprin...

Kedves tt24! A profilja alapján Önnek szeretném felajánlani a projektem: Java oktatót keresünk a Junior programozókat képző cégünkbe. Jelenleg egy fix 4+3 hetes periódusra szeretnénk Spring framework-ben is járatos fejlesztőt felvenni: Első 4 hét: fix munkaidő 9-15 óráig, heti 5 nap - Spring framework oktatása +3 hét: rugalmas munkaidő a 9-15 óráig tartó intervallumon belül - Diákok mentorálása, a projektmunkájuk segítése Versenyképes fizetés, kihívások, fiatalos csapat és helyszín. Várom mielőbbi visszajelzését! Üdvö...

Kedves norbware! A profilja alapján Önnek szeretném felajánlani a projektem: Java oktatót keresünk a Junior programozókat képző cégünkbe. Jelenleg egy fix 4+3 hetes periódusra szeretnénk Spring framework-ben is járatos fejlesztőt felvenni: Első 4 hét: fix munkaidő 9-15 óráig, heti 5 nap - Spring framework oktatása +3 hét: rugalmas munkaidő a 9-15 óráig tartó intervallumon belül - Diákok mentorálása, a projektmunkájuk segítése Versenyképes fizetés, kihívások, fiatalos csapat és helyszín. Várom mielőbbi visszajelzését! Üdv&...

Kedves Tamás! A profilja alapján Önnek szeretném felajánlani a projektem: Java oktatót keresünk a Junior programozókat képző cégünkbe. Jelenleg egy fix 4+3 hetes periódusra szeretnénk Spring framework-ben is járatos fejlesztőt felvenni: Első 4 hét: fix munkaidő 9-15 óráig, heti 5 nap - Spring framework oktatása +3 hét: rugalmas munkaidő a 9-15 óráig tartó intervallumon belül - Diákok mentorálása, a projektmunkájuk segítése Versenyképes fizetés, kihívások, fiatalos csapat és helyszín. Várom mielőbbi visszajelzését! Ü...

Kedves hnhpo! A profilja alapján Önnek szeretném felajánlani a projektem: Java oktatót keresünk a Junior programozókat képző cégünkbe. Jelenleg egy fix 4+3 hetes periódusra szeretnénk Spring framework-ben is járatos fejlesztőt felvenni: Első 4 hét: fix munkaidő 9-15 óráig, heti 5 nap - Spring framework oktatása +3 hét: rugalmas munkaidő a 9-15 óráig tartó intervallumon belül - Diákok mentorálása, a projektmunkájuk segítése Versenyképes fizetés, kihívások, fiatalos csapat és helyszín. Várom mielőbbi visszajelzését! Üdv&oum...

...PHP 5.3+ és jQuery magabiztos ismerete  MySQL ismerete  Adatmodellek és adatbázistervek implementálása, folyamatos optimalizáció  MVC szemlélet  GIT alapos ismerete (Git-flow)  Szakmai angol  Minimum 2 év PHP fejlesztői tapasztalat  Magas munkabírás és stressz tűrő képesség  Szervezett, önálló, precíz és felelősségteljes munkavégzés  Csapatszellem Előnyt jelent  Bootstrap 3  Laravel framework  Less  Mobil alkalmazásfejlesztésben jártasság  Vue script Amit a cég kínál:  Stabil munkahely egy dinamikusan terjeszkedő nemzetközi vállalatnál  Fejlőd&eacu...

Kedves Károly! Lenne egy öthónapos projekt: java-s tesztautomatizálás. Adott tesztszkenáriókat kell automatizálni, jellemzően selenium-ot kell használni. Amennyiben érdeklik a részletek, kérem hívjon ezen a számon: +3630-657-3728 Üdvözlettel, Barnabás

Kedves Csanád! Lenne egy öthónapos projekt: java-s tesztautomatizálás. Adott tesztszkenáriókat kell automatizálni, jellemzően selenium-ot kell használni. Amennyiben érdeklik a részletek, kérem hívjon ezen a számon: +3630-657-3728 Üdvözlettel, Barnabás

Kedves Zsolt! Lenne egy öthónapos projekt: java-s tesztautomatizálás. Adott tesztszkenáriókat kell automatizálni, jellemzően selenium-ot kell használni. Amennyiben érdeklik a részletek, kérem hívjon ezen a számon: +3630-657-3728 Üdvözlettel, Barnabás

Keresünk Backend és frontend fejlesztőt Backend elvárások Több éves programozói tapasztalat Python 2 és 3 nyelven Több éves programozói tapasztalat főleg objektum orientált/kliens-szerver felépítésű program/rendszer fejlesztésben A Django framework alapos ismerete Django REST framework alapos ismerete Tesztelési technológiák ismerete (unit és browser tesztelés) SQL adabázisok alapos ismerete Linux alapszintű ismerete Frontend elvárások HTML5, CSS3, Javascript tapasztalat Angular framework ismerete Jasmine, Karma tapasztalat Előny az Angular Mater...

...szociális hálózattal kapcsolatos alkalmazás fejlesztésében / értesz a video streaming technológiákhoz (pl. webrtc) - szintén előny, ha tudsz Github-on kód részletet mutatni az eddigi munkáidból A frontend fejlesztő irányában a speciális elvárások: - AngularJS haladó szintű, gyakorlati ismerete - ajax / jquery ismeret - webpack ismerete - Javascript, SASS, reszponzív web front-end framework ismeret (Bootstrap, Zurb Foundation, Angular Material, stb.) - előnyök: Coffescript, Typescript, stb. ismerete / van UX tapasztalatod/érzéked Backend fejlesztő speciális elvárásai: - NodeJS,...

Olyan webes, elsősorban front end fejlesztőt keresünk, aki járatos az alábbi technológiákban: JavaScript, Angularjs, jQuery, CSS, Material Design. Előny ha az alábbiakat is ismered: Python, Django, Django Rest Framework, git. További infó kapcsolatfelvétel után.

Egy olyan front endest keresünk aki a symphony front end php framework webes technologiat ismeri. Kérhetünk tőle olyanoka, hogy: javascript html5 php responsive css

Olyan webes, elsősorban front end fejlesztőt keresünk, aki járatos az alábbi technológiákban: JavaScript, Angularjs, jQuery, CSS, Material Design. Előny ha az alábbiakat is ismered: Python, Django, Django Rest Framework, git. További infó kapcsolatfelvétel után.

...segítségünkre. A feladat: böngésző oldali Javascript fejlesztés, Twitter Bootstrap CSS framework mankójával. Egyelőre projekt jelleggel keresünk munkatársat, az idei év hátralévő részére. Sikeres együttműködés nyitottak vagyunk a későbbi folytatásra is. A munka távolról is végezhető. Minimum heti 20 órás, intenzív, összeszedett munkaidőt várunk el. Fiatalos, lendületesen fejlődő vállalkozás vagyunk, csapatunk jelenleg 7 fős. Elvárásaink: - Javascript: 2+ éves gyakorlati tapasztalat, - HTML, HTML5, CSS, CSS3: középhaladó, - Twitter Boot...

Folyamatos munkára keresek szakért?t a következ? tapasztalattal: Quicktest pro , Loadrunner . A szakért? feladata fenti alkalmazásokhoz szükséges script fejlesztés, hibajavítás. A munkavégzés helye nyelv ismerete kötelezo.

I need an experienced Thingsboard specialist to take over my existing installation and further enhance it to meet my business requirements. The project involves: Should have good expertise in rule chain and its automation

I'm in need of a skilled individual who is proficient in blockchain and wallet analysis, specifically on the Arbitrum blockchain. The project involves analyzing transaction patterns and wallet balances and activities. Key Requirements: - Proficiency in blockchain analysis, 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 ...

I'm in need of a Zapier expert who can create integrations and help with automation workflows. The role will also involve providing coaching and accountability via screenshare. Key Responsibilities: - Set up Zapier integrations between Trello, Airtable, Google Drive, Google Docs, Todoist, and Make.com. - Create automation workflows to streamline processes and improve efficiency. - Provide guidance, coaching, and accountability through a screenshare format on live calls. This is a role that requires a high level of expertise in Zapier, as well as good communication and coaching skills to guide me through the process and keep me on track. Because here are lot's of bots, Interested applicant, send the subject: “ZAPCOACH&r...

...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 into this automated process...

I am seeking an experienced Excel expert to help resolve an issue with a percentage calculation in my Excel spreadsheet. Despite following standard procedures, the result is incorrect, and I need assistance to identify and correct the problem. Details: I am working with the following data in my spreadsheet: Total Costs for the Job (Cell V14): $241,779.50 Total Collected (Cell V17): $289,844.00 Profit (Cell V15): Calculated as =V17 - V14, resulting in $48,064.50 I need to calculate the profit as a percentage of the total costs, and this should be displayed in cell V16. The formula I am using is: = ( ? 15 / ? 14 ) ∗ 100 =(V15/V14)∗100 Given the values: = ( 48 , 064.50 / 241 , 779.50 ) ∗ 100 = 19.88 % =(48,064.50/241,7...

I need a CRM solution designed around the latest version of Odoo, Odoo 13 or Zoho. I'm looking for devel...Odoo, Odoo 13 or Zoho. I'm looking for developers with specific skills and experience customizing Odoo CRM or Zoho Creator (CRM). Key features I need to integrate: - Contact management - Management of the Contracted Services pipeline - Customer support tickets - Agenda management with confirmations via automation via email and Whatsapp - Patient Medical Records - Integration and Management of WhatsApp messages - Built-in video calling appointments Additionally, the project requires specific design and branding elements that will be explained in more detail during the selection process. An eye for detail and a creative mindset are required t...

I'm looking for a professional who can assist me in automating the employment verification process, specifically for background checks. The system should require minimal human intervention. Key requirements: - The verification data should be collected through online forms. - The process should be fully automated, requiring as little manual intervention as possible. - The system should be secure and reliable, ensuring the privacy and accuracy of the information collected. - The verification process should be optimized for background checks. Ideal skills for this job include: - Experience in software development or automation, particularly in data collection and processing. - A background in data security and privacy, as this is crucial for the hand...

...for a Remote Part-Time WordPress Developer / Publisher to join our dynamic team. This role offers the flexibility to work from anywhere in Pakistan, collaborating with team members to create and maintain stunning WordPress websites. Responsibilities: Design & Development: Crafting visually appealing and fully functional WordPress websites. Content Management: Publishing and updating content across WordPress sites efficiently. Blog Management: Editing, publishing, and maintaining high-quality blog posts. Team Collaboration: Working closely with other team members to achieve project goals. Technical Support: Troubleshooting and resolving technical issues on WordPress sites to ensure optimal performance. Qualifications: Proficient in...

I'm a beginner in Oracle Service Bus (OSB) and would like a thorough virtual training session on the topic. I'm looking for a skilled instructor who can guide me through the following areas: - Basic Concepts and Architecture: I need to understand the foundational principles of Oracle Service Bus (OSB). This includes how it works, its key components, and its role in service-oriented architecture. - Service Development and Deployment: I'm interested in learning how to develop services on OSB and deploy them effectively. This includes hands-on exercises and practical examples to reinforce the learning. - Troubleshooting and Optimization: I want to be able to troubleshoot any potential issues that may a...

I am in search of a skilled AWS/Terraform/GitLab professional to assist in troubleshooting issues within our existing AWS test project setup. The initial engagement will be for 10 hours per week, with the potential for additional hours as required. Key Responsibilities: - Addressing infrastructure setup issues - Identifying and rectifying configuration errors - Fixing deployment failures Ideal Candidate: - Proven experience with AWS, Terraform, and GitLab - Significant experience in debugging complex projects - Proficient in AWS infrastructure setup, configuration, and deployment - Familiarity with automation tools used in AWS test projects If you possess these skills and are a problem-solving expert, I would be interested in discu...

...candidate/team will have worked on YouTube automation channels before with measurable success, have extensive knowledge of Youtube guidelines/copyright rules/fair use policies, strong drawing skills. We Want to Work With You If: - You have experience in creating high quality art work. - You understand psychology behind thumbnails - You can analyze competition and their thumbnails & create your own best version - You understand how to draw viewers in with an interesting and emotional art work to use for thumbnail. - You have experience working under tight deadlines - You are committed to high quality without the need for lots of revisions. - You are organized, communicative and have fast turnaround times. - You can deliver ite...

I'm in need of a financial programmer with experience in Easy Language (TradeStation) to create an automated trading strategy for the stock market. The strategy will be designed to make trading decisions autonomously, based on specific criteria. Key Requirements: - Proficient in Easy Language (TradeStation) - Demonstrated experience in creating automated strategies for the stock market - Ability to understand and implement complex trading algorithms Ideally, the project should be completed within a week. I am looking for a professional who can effectively communicate and ensure the successful execution of this project.

I am in need of an experienced UI designer to create visually appealing interfaces for both mobile and desktop platforms. The primary goal of the design is to enhance the user experience. I have already made a web app using Flutter framework, but I want to improve the UI of my project. I am very confused about the UI, so I want you to make the ui using Figma or any other alternative and then I can code it myself, just need help in deciding the UI ( what should be the colors scheme , size, font, animations), as my project is subscription based project, so I want a very professional as well as bold UI. I will showcase the project to it, then you can create the UI and then I can code it. Key Requirements: - Design for both mobile a...

I'm in need of a video editor to assist with creating an engaging, animated explainer tutorial video. Key Requirements: - Proficiency in video editing software is essential. Please specify your experience with any of the following: Adobe Premiere Pro, Final Cut Pro, or Sony Vegas Pro. - Strong understanding of video editing techniques, particularly for tutorial videos. This project focuses on creating an animated explainer tutorial video. The freelancer should be able to: - Leverage animation software to create engaging and informative visuals that help explain the tutorial content. - Ensure the video remains clear and concise to assist viewers in understanding the tutorial's key concepts. Ideal Skills and Experience: ...

Company Overview: We specialize in providing innovative automation solutions for small businesses, including CRM, marketing automation, graphic design, and print solutions. Our goal is to streamline operations and drive growth with smart, reliable, and professional tools. Design Guidelines: Concept and Style: Modern and Professional: The logo should reflect a contemporary and professional look. Innovative and Smart: Emphasize the innovative and intelligent nature of our automation solutions. Fluidity and Flow: Incorporate elements that suggest smooth operations and efficiency. Color Palette: Primary colors: Consider using blues, greens, or grays to convey trust, innovation, and reliability. Accent colors: Orange or silver can be used as accent c...

I'm in need of a video editor to assist with creating an engaging, animated explainer tutorial video. Key Requirements: - Proficiency in video editing software is essential. Please specify your experience with any of the following: Adobe Premiere Pro, Final Cut Pro, or Sony Vegas Pro. - Strong understanding of video editing techniques, particularly for tutorial videos. This project focuses on creating an animated explainer tutorial video. The freelancer should be able to: - Leverage animation software to create engaging and informative visuals that help explain the tutorial content. - Ensure the video remains clear and concise to assist viewers in understanding the tutorial's key concepts. Ideal Skills and Experience: ...

I'm in search of a Social Media Expert who can train me and help me implement a strategic plan to generate leads and sales through social media platforms: Facebook, Instagram, and Twitter. This will be a brand new venture for a well established business. Previously sold face to face. Key Points: - I'm interested in someone with extensive experience in social media marketing and sales, who can help implement a clear plan for increasing lead generation. - The target audience is business owners. I'm open to suggestions on how to best reach them and engage with them. - I'm looking for a trainer, so the ability to explain things in a simple, understandable way is crucial. Excellent English is essen...

I'm seeking an experienced Advanced GMAT tutor to help me excel in the exam. I've chosen to study online, so please ensure you're comfortable with this format. Key Requirements: - Expertise in Advanced GMAT: I'm at an advanced level and I need a tutor who can help me elevate my skills to the next level. - Comprehensive Coverage: I need support in all areas of the GMAT including Quantitative section, Verbal section, Integrated Reasoning, and Essay. - Online Teaching Skills: As I'll be doing all my learning online, you must be adept at teaching through this medium. Ideal Skills and Experience: - Proven track record in GMAT tutoring, especially with advanced students - Strong understanding and grasp of all sections of...

I'm seeking a freelancer to develop a cutting-edge system that will automate payments through the PayPal system. Key Requirements: - The system should completely automate the payment process without any manual intervention. - The integration with the PayPal API is a key requirement, so experience working with this API is crucial. Your main task will be to set up the system to facilitate automated payments by integrating it with the PayPal API. Ideal Skills: - Proficiency in PayPal API. - Prior experience in payment automation development. Experience in creating secure and reliable automated payment systems is a major plus. If you have a track record of developing similar systems in the past, that would be very beneficial.

I urgently need a competent videographer with personal camera and sound equipment to produce engaging, high-quality videos over a two-day period amounting to about 10 hours. These videos will include event coverage and conducting interviews. Key Requirements: * Ability to film in indoor locations. * Adeptness in filming both event videos and interviews. * Expertise to create videos aimed at both marketing and promoting our brand and providing educational information. Skills and Experience: * Solid videography experience. * Proficient use of personal camera and sound equipment. * Proven track record of working on marketing and promotional casings, as well as informative and educational projects.

...my endeavor to secure my systems, I am seeking an ethical hacker to primarily focus on data security. By extensively exploring the potential weaknesses and vulnerabilities, your primary goal 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 ...

I'm looking for a graphic designer to create a series of flat map pins in SVG format. These map pins will be used as part of an online map system, so they need to be clear and easily identifiable. Key requirements: - The pins should be flat in style and incorporate a logo. - They should be distinctive and clear, appropriate for display on a map. - The final deliverables must be in SVG format. - 6 different types of pins are needed, which will explain more to the winning candidate Ideal skills for this job: - Strong graphic design and illustration skills. - Proficiency in creating SVG images. - Understanding of colour theory and design for clear visual communication. - Experience in creating icons or similar graphic elem...

...developer who can assist in two main areas: - Creation of PowerPoint presentation using a CSV data file - Automate the process via a public URL to upload the CSM file Creation of Powerpoint Presentation The CSV file will feature data-points in columns. A powerpoint presentation template will be provided for reference. The graphs and tables should be present as per the data-points present in CSV file. Automating the Process This is the secondary part of the job. Once we have are successfully able to convert a CSV data in PPT format, we should create a public secured link to upload the file. It should be auto-converted and file should be ready for download. The ideal candidate should be a proficient Python Developer with a solid under...

I'm in need of a skilled Python developer to create a custom Telegram bot for me. This bot will primarily focus on automated messaging. Key requirements: - (((meeting will be in person in Kuwait))) - The bot should be programmed in Python / any - It should be able to send automated messages - integrate payment gateway - Messages include, but aren't limited to, welcome messages for new users, notifications for updates, and reminders for appointments Please consider the following skills and experiences for this project: - Strong proficiency in Python, with a good understanding of its libraries and frameworks - Experience in developing Telegram bots specifically - A solid grasp of automation and scripting -...

Project is basically about reading data from file and then using algorithms and data structures sort those data as its needed and then write short documentation...I will also need you to explain me everything you made, how it works etc...Project consists of 4 chapters...1 chapter will be pinned

I'm in need of a proficient recruitment specialist to assist in a brand awareness campaign. The goal of this campaign is to increase recognition of our brand. The target audience for this brand awareness campaign are specifically drivers. Searching for an expert in either recruiting or marketing. (Please carefully read the following task before submitting any offer or asking about this project) Project: Develop a targeted recruitment campaign for drivers and establish my company’s brand in a local market with a population under one million. Company Type: A local transportation company that uses an on-demand app for providing services. Company Operation description: We’re not competing wit...

...specialises in Facebook advertising. The aim is to produce an advert which can be translated into multiple languages to target different countries. The ad is for a downloadable video course, for those whose native language is not English, teaching what to say in a job interview in English. Predominantly my market would be working professionals aged between 25 and 50 who are likely to have to attend job interviews in English. Main tasks would be : - Creating an engaging Facebook ad - zeroing in on target group of potential customers (possible later task) - designing an effective landing page for ad clicks current page (in Italian) can be found at I can provide a translation in English later

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...

I need help in setting up an Ubuntu virtual machine using VirtualBox. This involves: - Configuring proper network settings within the virtual machine - Assigning IP addresses The ideal freelancer for this project will have: - Proficiency in setting up Ubuntu virtual machines using VirtualBox - Experience in configuring network settings and assigning IP addresses - Strong communication skills to explain the setup process. This is a relatively straightforward task for an