6378 Opera courses in Mablethorpe delivered On Demand

About Course Learn how to use Linux to boost your programming productivity and become a more efficient developer. In this comprehensive course, you will learn: The best Linux terminals to use for programming How to use clipboard managers to save time and effort How to use Vim, the most powerful text editor for programmers How to use Zsh and the oh-my-zsh framework to customize your terminal experience Extensive lessons on terminal commands, including how to find and replace text, work with pipes and subshells, and automate tasks And much more! You will also receive access to a repository of scripts and an eBook containing all of the examples and explanations from the course. This course is perfect for programmers who are new to Linux or who want to learn how to use Linux more effectively. Enroll today and start your journey to becoming a more productive programmer with Linux! Here are some of the benefits of learning how to use Linux for programming: Linux is a powerful and flexible operating system that can be customized to meet your specific needs. Linux is also very efficient, which can make a big difference in your productivity, especially when working with large projects. Linux has a wide range of built-in tools and utilities that are designed for programmers, such as the Bash shell, Vim, and Git. Linux is also open source, which means that there is a large community of developers who are constantly contributing to and improving the platform. If you are serious about becoming a more productive programmer, then learning how to use Linux is an essential skill. This course will teach you everything you need to know to get started. Enroll today and start boosting your productivity! What Will You Learn? I'll increase my terminal productivity by using Terminator, Guake and other tools I'll be able to use regular expressions, pipes and subshells and external shell scripting libraries I'll work with files like a vim-fu master I'll increase my command line productivity (by learning how to use sed, find, tmux, network, autoenv and more) I'll be able to launch a webserver, modify images and productively work with Git I'll edit files without leaving the terminal, use the screen space efficiently and copy-paste like a pro All in all: I will double my terminal productivity Course Content Introduction Introduction Terminator- Hasta La Vista Terminal Guake - Not Quake! Clipit- Forget Everything, Paste from History Productive Shells: Reinvent The Way You Work Pre Chapter Vim Oh-my-zsh Your Terminal Never Felt This Good Before! Basic Regular Expressions Pipes and Subshells Your Shell's Salt and Pepper Shell Scripting for Fun and Profit Shell Scripting Libraries Vim Kung Fu Supercharging Vim Keyboard Kung Fu Plugin Steroids for Vim Vim Password Manager Extra- Fast Configuration Restore CLI: The Hidden Recipe Sed - One-Liner Productivity Treasure You Can Run, But You Can't Hide From 'Find' Tmux Virtual Consoles, Background Jobs and The Likes Network Who's Listening Autoenv Set a Lasting, Project-Based Habitat Don't rm The Trash Developers' Treasure On the Spot Webserver Shrinking Spells and Other Image Magic Go With the Git Flow Merge Git Conflicts With Ease From Localhost to Instant DNS JSON Jamming in The New Age No More Mister Nice Guy Closing Chapter Bonus Chapter Terminal Art Bonus Chapter Closing Chapter A course by Bogdan Vaida Experiential Trainer RequirementsYou need to have prior experience in the Linux command lineYou must have access to a Linux/Unix terminalBasic programming skills are recommended (but not required)Some basic shell scripting and web development knowledge make the course easier to understand Audience System administrators Developers who already know the basics of Linux and want to sharpen their skills People working in the Linux command line This course is not for people who are opening a terminal for the first time Audience System administrators Developers who already know the basics of Linux and want to sharpen their skills People working in the Linux command line This course is not for people who are opening a terminal for the first time

About Course Course Description: This course is designed to teach you the fundamentals of current electricity and DC circuits, as well as how to use Thinkercad to simulate circuits. It is perfect for students of electrical, electronics, instrumentation, biomedical, and robotic engineering, as well as anyone who is curious to learn more about electronics. In Part 1, you will learn: The difference between conductors and insulators What current is and how to measure it What a resistor is and how to find its value What voltage is What power is and how to calculate it The difference between AC and DC circuits Ohm's law with experiment Series and parallel circuits with numerical examples In Part 2, you will learn: What nodes, meshes, and loops are KVL and KCL rules Mesh analysis Supermesh analysis Nodal analysis Voltage and current divider rules Thevenin's law Norton's law You will also learn how to simulate circuits in Thinkercad. By the end of this course, you will have a solid understanding of current electricity and DC circuits, and you will be able to use Thinkercad to simulate circuits. Who this course is for: Students of electrical, electronics, instrumentation, biomedical, and robotic engineering Anyone who is curious to learn more about electronics Why take this course? Learn the fundamentals of current electricity and DC circuits in a clear and concise way Master the use of Thinkercad to simulate circuits Get a head start on your engineering studies or prepare for a career in electronics Enroll today and start your journey to becoming an expert in current electricity and DC circuits! What Will You Learn? In part 1 you will learn some basic concepts of current electricity like current, voltage, resistor, etc along with introduction to Thinkercad software. In part 2 you will learn different techniques to solve complex circuits along with simulation of that circuits on the thinkercad software Network Theory concepts (Mesh, super-mesh, Nodal analysis, Voltage and current divider techniques, Thevenin's and Norton's theorem) Simulation of different circuits on Thinkercad software You will learn to operate voltmeter, ammeter and multimeter You will learn how to measure voltage and current of any circuit and resistance of any resistor You will learn how to generate different ac signals like Sine wave, Square wave and Triangular wave You will be able to convert any complex circuit into it's simple form Course Content Introduction Courses Overview Current Electricity Difference Between Conductors, Insulators and Semiconductors What is a Current What is a Resistor What is a Voltage What is a Power Difference Between AC and DC Circuits Introduction to Thinkercad Software Thinkercad Software Understanding Different AC Signal, DC Offset Voltage and Concept of Frequency Understanding the Concept of Time and Frequency in Depth on Thinkercad Software Ohms Law Introduction to Ohms Law Experimental Analysis of Ohm's law (Experiment - 1) Experimental Analysis of Ohms Law (Experiment - 2) Ohms Law Conclusion Series and Parallel Circuits Introduction to Series and Parallel Circuits Basic Numerical on Deries and Parallel Circuits Numerical on the Combination of Series Parallel Circuits Complex Numerical on Series Parallel Circuit Electrical Circuits Concept of Nodes, Meshes and Loops KVL and KCL Introduction to Kirchoff's Voltage Law Introduction to Kirchoff's Current Law Basic Numericals on KVL and KCL Mesh Analysis Understanding Mesh Analysis Solving Circuit with Two Meshes in a Loop Using Mesh Analysis Simulation of the Above Circuit Solving Circuit with Three Meshes in a Loop Using Mesh Analysis Simulation of the Above Circuit Shortcut Trick to Solve Mesh Analysis Supermesh Analysis Basics of Supermesh Example of Supermesh Supermesh Numerical Nodal Analysis Understanding Definition and Basic Concept of Nodal Analysis Nodal Analysis Example Numerical on Nodal Analysis Simulation of Nodal Analysis Circuit (Part-1) Simulation of Nodal Analysis (Part -2) Voltage Divider Technique Introduction to Voltage Divider Technique Numerical on Voltage Divider Technique Example of Voltage Divider Technique Current Divider Technique Introduction to Current Divider Technique Numerical on Current Divider Rule Thevenin's Theorem Introduction to Thevenin's Theorem Numerical on Thevenin's Theorem Norton's Theorem Introduction to Norton's Therom Numerical on Norton's Theorem A course by Practical Buddy Biomedical Engineer/ Teacher RequirementsBasic algebra for mathematical calculations or scientific calculatorPc or Laptop to simulate the circuits on the thinkercad softwareDecent connection of internet Audience Those who are curious to learn arduino Those who are curious to learn electronics Those who are curious to learn electric circuits Those who are curious to learn simulation software Anyone opting for electrical or electronics engineering Audience Those who are curious to learn arduino Those who are curious to learn electronics Those who are curious to learn electric circuits Those who are curious to learn simulation software Anyone opting for electrical or electronics engineering

About Course Building Web Applications with Django and PostgreSQL: Master the Complete Stack Learn to build modern and robust web applications with one of the most popular and powerful tech stacks: Django and PostgreSQL. In this comprehensive course, you will learn: The fundamentals of Django, including setting up a development environment, creating models, views, and templates, and handling user authentication and authorization. How to work with Django's built-in admin interface and form files. Advanced topics, such as working with Django's ORM (Object-Relational Mapping) to interact with the PostgreSQL database, handling form submissions, and integrating third-party libraries. Best practices for structuring Django projects, handling user sessions, and securing your web applications against common web vulnerabilities. You will also gain hands-on experience in using PostgreSQL as your database backend, including: Designing database schemas Performing CRUD (Create, Read, Update, Delete) operations Optimizing database performance Throughout the course, you will work on practical projects that will allow you to apply the concepts you've learned and build real-world web applications. By the end of this course, you will be able to: Create dynamic and interactive web applications with Django and PostgreSQL. Build secure, scalable, and maintainable web applications. Become a skilled and proficient web developer. This course is perfect for: Beginners who want to learn how to build web applications from scratch. Experienced web developers who want to learn how to use Django and PostgreSQL. Anyone who wants to learn how to build modern and robust web applications. Enroll today and start your journey to becoming a Django and PostgreSQL expert! Bonus: Get access to the instructor's personal collection of Django and PostgreSQL resources. Why learn Django and PostgreSQL? Django and PostgreSQL are two of the most popular and powerful technologies for building web applications. Django is a popular web framework written in Python that allows developers to build robust and scalable web applications quickly and efficiently. PostgreSQL is a powerful open-source relational database management system known for its reliability and performance. Learning Django and PostgreSQL will give you a significant advantage in the job market and allow you to build more complex and sophisticated web applications. Here are some of the benefits of learning Django and PostgreSQL: Django is a popular web framework with a large and active community. This means that there is a wealth of resources available to help you learn Django and get help when you need it. Django is a powerful and versatile web framework that can be used to build a wide variety of web applications, from simple websites to complex e-commerce platforms. PostgreSQL is a powerful and reliable database management system that is known for its performance and scalability. PostgreSQL is also an open-source database, which means that it is free to use and distribute. So what are you waiting for? Enroll in this course today and start your journey to becoming a Django and PostgreSQL expert! What Will You Learn? Comprehensive coverage of Django web framework and PostgreSQL database Practical projects to apply concepts learned Hands-on experience with PostgreSQL as a database backend Best practices for structuring Django projects and securing web applications In-depth understanding of Django's ORM for database interactions Integration of third-party libraries and Import Real-world examples and use cases Course Content Getting Started Introduction Getting started on Windows, MacOS, and Linux How to Ask Great Questions FAQs Setting Up a Python Development Installing Python Installing PyCharm IDE for Development Creating the first Python Project Write and Run Hello World Program Command Line Basics Installation and Access Pip Command Django Setting Up the Project Introduction to Web Framework and Django Installing Django and Setting Up a Project Understanding Django Architecture and Structured Creating a Simple Django App Building a Django App with PostgreSQL Introduction to PostgreSQL and its Advantages for Web Applications Installing PostgreSQL and Setting Up a Database pgAdmin Secure Login and Create Database Connection Django to PostgreSQL Creating a Basic HTTP View Method Request URL Pattern on App Include Apps to Project URLs Installing the Psycopg2 Module for DB Connection Django Models and ORM (Object Relational Mapping) Defining Models and Creating Database Tables Using Djangos Built-in ORM to Interact with the Database Migration to Create DB Tables Assessment Test Solution for an Assessment Test Working with Admin Module Creating Superuser as Admin Authentication and Authorization User Access Permissions Registering User Models to the Admin Dashboard Creating Data Using CRUD Functionality View Data on the PostgreSQL Database Table Django Views and Templates Understanding the MVC - MVT Creating Views and Handling HTTP Requests and Rendering Templates Creating a Template with HTML Page Building Dynamic Form and Handling Django Form Design Creating Bootstrap Template Applying Bootstrap to Django Form Creating Stunning Product Card items Django Project: Registration form - Real world Creating Model Creating Forms Creating Views Applying ORM - Migrations Creating My Form Template Adding URLs Creating Success_View Template Project URLs Update and Adding Installed Apps Run Project and Submit Data to Database Django Reports Creating Report_View Method Creating Report_Template Update URLs Pattern Run Project and Test Reports Course Resources Course Resources A course by Sekhar Metla IT Industry Expert Material Includes Download Resources and Reference Project Source Code Django to PostgreSQL database connection Project Settings file RequirementsBasic knowledge of Python programmingUnderstanding of relational databases and SQL - optionalFamiliarity with web development concepts (HTML, CSS, and JavaScript) - optional Audience Beginners Python Django developers curious about web application development Web developers who want to learn how to build web applications using Django and PostgreSQL Python developers who want to expand their skillset to web development Students or professionals looking to enhance their web development skills with Django and PostgreSQL. Requirements Basic knowledge of Python programming Understanding of relational databases and SQL - optional Familiarity with web development concepts (HTML, CSS, and JavaScript) - optional

Unlock your career potential with the Microbiology Lab Technician Diploma. This comprehensive online course covers essential topics, including microbial diversity, laboratory safety, and clinical practices. Gain practical skills and theoretical knowledge to thrive in medical laboratory services. Enrol now to become a qualified microbiology lab technician!

This Assistant Store Keeper Course offers a detailed insight into the essential duties and responsibilities involved in managing retail inventory and supporting store operations. Designed for individuals eager to develop a strong foundation in store management, this course covers key areas such as retail management principles, consumer behaviour, and effective supplier relationships. Participants will gain a clear understanding of how to maintain stock accuracy, contribute to visual merchandising, and navigate the legal framework relevant to retail settings. The curriculum also explores customer interaction strategies and store psychology, ensuring learners appreciate the dynamics that influence shopping behaviour and store performance. Whether you are aiming to enter the retail sector or enhance your existing knowledge, this course provides the knowledge necessary to support store operations efficiently. Delivered entirely online, it suits those looking for flexible study without the need for physical attendance. Key Benefits Accredited by CPD Instant e-certificate Fully online, interactive course Self-paced learning and laptop, tablet, smartphone-friendly 24/7 Learning Assistance Curriculum Module 01: Introduction to Store Assistant Module 02: Roles and Responsibilities of a Store Assistant Module 03: Introduction to Retail Management Module 04: Managing a Retail Store Module 05: Visual Merchandising Module 06: Consumer Behaviour Module 07: Dealing with Customers Module 08: Dealing with Suppliers Module 09: Store Psychology Module 10: Legislations Related to Retail Course Assessment You will immediately be given access to a specifically crafted MCQ test upon completing an online module. For each test, the pass mark will be set to 60%. Certificate Once you've successfully completed your course, you will immediately be sent a digital certificate. Also, you can have your printed certificate delivered by post (shipping cost £3.99). Our certifications have no expiry dates, although we do recommend that you renew them every 12 months. CPD 10 CPD hours / points Accredited by CPD Quality Standards Who is this course for? The Assistant Store keeper training is ideal for highly motivated individuals or teams who want to enhance their skills and efficiently skilled employees. Requirements There are no formal entry requirements for the course, with enrollment open to anyone! Career path Learn the essential skills and knowledge you need to excel in your professional life with the help & guidance from our Assistant Store keeper training. Certificates Certificate of completion Digital certificate - Included

Fraud Management Strategies Course Overview In today’s fast-paced business landscape, fraud is a constant threat that can disrupt operations and harm reputations. The Fraud Management Strategies Course offers a thorough exploration of effective methods for identifying, preventing, and responding to fraudulent activities. This course provides essential knowledge on developing a solid framework to safeguard your organisation, ensuring that you can address any potential risks head-on. With a detailed focus on strategies tailored to today’s business environment, this course arms you with the tools to build and maintain robust fraud management systems that protect both your assets and your reputation. Through in-depth analysis and case studies, you will gain insights into the latest fraud trends and the most effective tactics for tackling them. The course will guide you in recognising the telltale signs of fraud and help you establish preventive measures that align with your organisation's specific needs. Whether you're an experienced manager or someone new to fraud management, this course will equip you with the knowledge to develop a more secure operational environment and act decisively when necessary. Stay one step ahead of fraud with this practical, engaging course that ensures you’re ready for any challenge. Key Features CPD Accredited FREE PDF + Hardcopy certificate Fully online, interactive course Self-paced learning and laptop, tablet and smartphone-friendly 24/7 Learning Assistance Discounts on bulk purchases Course Curriculum Module 1: Introduction to Fraud Management Module 2: Types of Fraud Module 3: Fraud Prevention Techniques Module 4: Fraud Detection Methods Module 5: Unveiling Fraudulent Evidence Module 6: Responding to Fraud Incidents Module 7: Investigating Fraud Module 8: Fraud Mitigation and Compliance Learning Outcomes: Identify diverse fraud types for proactive prevention strategies. Implement cutting-edge techniques for effective fraud prevention. Employ advanced methods to detect and analyse fraudulent activities. Unveil intricate evidence to strengthen fraud investigation skills. Develop a robust response strategy in the face of fraud incidents. Master fraud mitigation and compliance for a resilient organisational defence. Accreditation This course is CPD Quality Standards (CPD QS) accredited, providing you with up-to-date skills and knowledge and helping you to become more competent and effective in your chosen field. Certificate After completing this course, you will get a FREE Digital Certificate from Training Express. CPD 10 CPD hours / points Accredited by CPD Quality Standards Who is this course for? Finance Professionals Risk Management Specialists Audit and Compliance Officers Legal and Regulatory Affairs Personnel Business Owners and Managers Law Enforcement Officers Corporate Security Professionals Anyone in a role with a focus on fraud prevention and management. Career path Fraud Analyst Risk Manager Compliance Officer Forensic Accountant Internal Auditor Financial Crime Investigator Certificates Digital certificate Digital certificate - Included Once you've successfully completed your course, you will immediately be sent a FREE digital certificate. Hard copy certificate Hard copy certificate - Included Also, you can have your FREE printed certificate delivered by post (shipping cost £3.99 in the UK). For all international addresses outside of the United Kingdom, the delivery fee for a hardcopy certificate will be only £10. Our certifications have no expiry dates, although we do recommend that you renew them every 12 months.

Gain essential skills in medical office management with the Medical Assistant Diploma. Learn medical terminology, record-keeping, confidentiality, and more. Perfect for aspiring medical assistants and healthcare professionals. Start your career today!

Light Vehicle Maintenance - Level 2 course will teach you everything you need to know about the basic maintenance of light vehicles. You will learn about the safety rules and tools you need to work on cars, as well as the different systems and components that make up a car. In this course, you will explore the general maintenance procedures that every car owner should follow.

The Air Conditioning & Refrigeration (AIRC) Course offers a detailed exploration of the core principles behind heating, ventilation, air conditioning, and refrigeration technologies. Designed for those keen to understand how HVAC systems operate, this course covers everything from basic heating fundamentals and psychrometrics to the intricacies of compressors, water chillers, and ductwork. Whether you’re interested in system selection or the specifics of refrigerants, this course delivers a thorough foundation to support your knowledge in the field. With a strong focus on safety and specialised applications, the curriculum guides learners through the various components and operations critical to HVAC professionals. This course is carefully structured to provide clear, engaging, and accessible content that equips learners with the essential understanding required to navigate the technical landscape of heating and cooling systems. Perfect for those seeking to deepen their grasp of air conditioning and refrigeration without the need for physical attendance, it offers a balanced approach to mastering theory alongside industry-relevant concepts. Key Features CPD QS Certified Air Conditioning & Refrigeration (AIRC) Course Instant e-certificate Fully online, interactive Air Conditioning & Refrigeration (AIRC) course with audio voiceover Developed by professionals in the field Self-paced learning and laptop, tablet, smartphone-friendly 24/7 Learning Assistance Navigate the complexities of psychrometrics with finesse, understanding the interplay between heating fundamentals and ventilation dynamics. As you delve into the nuances of duct systems and piping intricacies, you'll find yourself equipped with the knowledge to tackle any challenge the HVAC industry throws your way. Embrace the art of refrigeration and refrigerants, mastering their applications in both conventional and special settings. Safety is paramount, and our curriculum ensures you're not just proficient, but vigilant guardians of wellbeing in the HVAC domain. Course Curriculum Module 01: Introduction to Heating, Ventilation & Air Conditioning (HVAC) Module 02: Heating Fundamentals and Psychrometrics Module 03: HVAC Systems Module 04: Heating and Ventilation Module 05: Air Conditioning Systems for HVAC Technicians Module 06: Compressors, Water Chillers, and Fans Module 07: Piping for HVAC Technician Module 08: Duct System in HVAC Module 09: Refrigeration and Refrigerants Module 10: Special Applications Module 11: HVAC System Selection Module 12: Safety in the HVAC Industry Learning outcomes Identify components of HVAC systems and their functions for installation. Apply principles of psychrometrics and heating fundamentals in HVAC systems. Analyse various HVAC systems for suitability in different environments. Demonstrate proficiency in installation and maintenance of air conditioning systems. Implement safety protocols while working with compressors, chillers, and fans. Evaluate refrigeration systems and select appropriate refrigerants for HVAC applications. Accreditation All of our courses, including this Air Conditioning & Refrigeration (AIRC) course, are fully accredited, providing you with up-to-date skills and knowledge and helping you to become more competent and effective in Air Conditioning & Refrigeration (AIRC). Certification Once you've successfully completed your Air Conditioning & Refrigeration (AIRC) course, you will immediately be sent a digital certificate. Also, you can have your printed certificate delivered by post (shipping cost £3.99). Our Air Conditioning & Refrigeration (AIRC) course certification has no expiry dates, although we do recommend that you renew them every 12 months. CPD 10 CPD hours / points Accredited by CPD Quality Standards Who is this course for? This Air Conditioning & Refrigeration (AIRC) course can be taken by anyone who wants to understand more about the topic. With the aid of this course, you will be able to grasp the fundamental knowledge and ideas. Additionally, this Air Conditioning & Refrigeration (AIRC) course is ideal for: Individuals seeking foundational knowledge in air conditioning and refrigeration systems. Aspiring HVAC technicians aiming to enter the industry confidently. Professionals looking to enhance their skills in HVAC technologies. Students interested in pursuing careers in heating, ventilation, and air conditioning. Anyone wanting to understand the fundamentals of air conditioning and refrigeration. Requirements Learners do not require any prior qualifications to enrol on this Air Conditioning & Refrigeration (AIRC) course. You just need to have an interest in Air Conditioning & Refrigeration (AIRC). Career path After completing this Air Conditioning & Refrigeration (AIRC) Course you will have a variety of careers to choose from. The following job sectors of Air Conditioning & Refrigeration (AIRC) are: HVAC Technician Refrigeration Engineer Air Conditioning Installer HVAC Maintenance Technician HVAC Sales Representative Refrigeration System Designer Certificates Digital certificate Digital certificate - Included Once you've successfully completed your course, you will immediately be sent a FREE digital certificate. Hard copy certificate Hard copy certificate - Included Also, you can have your FREE printed certificate delivered by post (shipping cost £3.99 in the UK). For all international addresses outside of the United Kingdom, the delivery fee for a hardcopy certificate will be only £10. Our certifications have no expiry dates, although we do recommend that you renew them every 12 months.

Banksman: Banksman Course Online Are you ready to take on the responsibilities of controlling traffic, alerting operators, and making sure all safety protocols are followed? If so, you ought to broaden your knowledge by enrolling in our Banksman Course. Through this Banksman Course, you will be a master of the foundations of Banksman role. Also, the Banksman Course explains safety regulations and risk assessment. Moreover, the Banksman Course teaches proper communication, vehicle dynamics and safe practices. The practical training of banksman signals will provided in this Banksman Course. After completing the Banksman Course, you will be able to handle any emergency procedures with proper legal aspects. Enrol in Our Banksman Course to get the abilities and understanding required to be successful in this position. Main Course: Level 3 Banksman Course Special Offers of this Banksman: Banksman Course This Banksman: Banksman Course includes a FREE PDF Certificate. Lifetime access to this Banksman: Banksman Course Instant access to this Banksman: Banksman Course Get FREE Tutor Support to this Banksman: Banksman Course Banksman: Banksman Course Online The knowledge in this Banksman: Banksman Course is about safely arranging the movements of machines and cars. You will also study about A-Z industrial and construction environments in this Banksman: Banksman Course. This Banksman: Banksman Course will teach you how to communicate effectively. The Banksman: Banksman Course covers signaling techniques and danger awareness. Who is this course for? Banksman: Banksman Course Online This Banksman Course can assist you in finding employment in this field. Requirements Banksman: Banksman Course Online To enrol in this Banksman: Banksman Course, students must fulfil the following requirements. To join in our Banksman: Banksman Course, you must have a strong command of the English language. To successfully complete our Banksman: Banksman Course, you must be vivacious and self driven. To complete our Banksman: Banksman Course, you must have a basic understanding of computers. A minimum age limit of 15 is required to enrol in this Banksman: Banksman Course. Career path Banksman: Banksman Course Online This Banksman Course is open to everyone. Questions and answers Currently there are no Q&As for this course. Be the first to ask a question.