Thursday, August 1, 2024

Automate Web Browsers with Playwright


Contact me (rajamanickam.a@gmail.com) for doing PHP Web development and Software Testing.

 I noticed that the browser automation tool Playwright is playing an important role in web scraping and software testing. So, I was thinking about learning it. Recently I needed to use it as my regular way of using PHP to do web scraping is not able to handle the requirements.  With the help of chatGPT, I was able to setup it up quickly and become familiar with it.  If you are new to testing, you can first read my ebook "Software Testing and QPT Automation".

I am putting below the chatGPT content which helped me to be familiar with Playwright.

In the ever-evolving landscape of web development, automation has become a crucial aspect of testing and scraping. Among the tools available, Playwright stands out as a robust and versatile option for browser automation. Developed by Microsoft, Playwright allows developers to script and control web browsers with ease. In this blog post, we'll dive into the essentials of Playwright, its key features, and how you can get started with this powerful tool.


What is Playwright?

Playwright is a Node.js library designed for automating browsers. It provides a unified API for interacting with multiple browser engines, including Chromium (Google Chrome), Firefox, and WebKit (Safari). Playwright is particularly useful for:

  • End-to-End Testing: Automate tests for web applications to ensure they function correctly across different browsers.
  • Web Scraping: Extract data from web pages programmatically, even if the content is dynamically loaded with JavaScript.
  • Performance Monitoring: Measure page performance and capture metrics.

With Playwright, you can automate tasks like navigation, form submission, and interactions with web elements seamlessly.


Getting Started with Playwright

To begin using Playwright, you'll need to have Node.js installed. If you haven’t done so already, follow this guide to install Node.js. Once you have Node.js, follow these steps:

  1. Set Up Your Project

    Create a new directory for your project and navigate into it:

    sh

    mkdir playwright-example cd playwright-example

    Initialize a new Node.js project:

    sh

    npm init -y

    Install Playwright:

    sh

    npm install playwright

    This command installs Playwright and its browser binaries.

  2. Create a Basic Script

    Create a file named example.js:

    javascript

    // example.js const { chromium } = require('playwright'); (async () => { // Launch a new browser instance const browser = await chromium.launch(); const page = await browser.newPage(); // Navigate to a URL await page.goto('https://rajamanickam.com'); // Take a screenshot of the page await page.screenshot({ path: 'screenshot.png' }); // Get the title of the page const title = await page.title(); console.log(`Page Title: ${title}`); // Close the browser await browser.close(); })();

    Run the script:

    sh

    node example.js

    After running the script, you'll see the page title in your terminal, and a screenshot of the page will be saved as screenshot.png.

  3. Handling Interactions

    Playwright allows you to simulate user actions like clicking buttons, filling forms, and navigating pages:

    javascript

    // example-interactions.js const { chromium } = require('playwright'); (async () => { const browser = await chromium.launch(); const page = await browser.newPage(); await page.goto('https://example.com'); // Click a button or link await page.click('a'); // Type text into an input field await page.fill('input[name="q"]', 'Playwright'); await page.press('input[name="q"]', 'Enter'); // Wait for a selector to appear await page.waitForSelector('h3'); // Get text content from an element const resultText = await page.textContent('h3'); console.log(`Search Result: ${resultText}`); await browser.close(); })();
  4. Advanced Usage

    Handling Multiple Pages and Frames

    javascript
    // example-multiple-pages.js
    const { chromium } = require('playwright'); (async () => { const browser = await chromium.launch(); const context = await browser.newContext(); const page1 = await context.newPage(); const page2 = await context.newPage(); await page1.goto('https://example.com'); await page2.goto('https://playwright.dev'); console.log(await page1.title()); console.log(await page2.title()); await browser.close(); })();

    Taking Screenshots and Generating PDFs

    javascript
    // example-screenshot-pdf.js
    const { chromium } = require('playwright'); (async () => { const browser = await chromium.launch(); const page = await browser.newPage(); await page.goto('https://example.com'); // Take a full-page screenshot await page.screenshot({ path: 'fullpage.png', fullPage: true }); // Generate a PDF of the page await page.pdf({ path: 'example.pdf', format: 'A4' }); await browser.close(); })();

    Using Locators

    javascript
    // example-locators.js
    const { chromium } = require('playwright'); (async () => { const browser = await chromium.launch(); const page = await browser.newPage(); await page.goto('https://playwright.dev'); // Find an element using text const link = page.locator('text=Get Started'); await link.click(); // Find an element by CSS selector const heading = page.locator('h1'); console.log(await heading.textContent()); await browser.close(); })();

Why Use Playwright?

  1. Cross-Browser Testing: Playwright supports multiple browsers with a single API, making it easy to test your application across different environments.

  2. Headless Mode: Playwright runs browsers in headless mode by default, which is useful for automated testing and server environments.

  3. Powerful Automation: It provides advanced features like network interception, browser context management, and handling multiple pages or iframes.

  4. Rich API: Playwright's API is rich and flexible, allowing for fine-grained control over browser behavior and interactions.


Conclusion

Playwright is a powerful tool for browser automation, offering a robust set of features for testing, scraping, and performance monitoring. Its support for multiple browsers, combined with its easy-to-use API, makes it a valuable addition to any developer's toolkit. Whether you're building complex test suites or simply automating repetitive tasks, Playwright provides the flexibility and control needed to streamline your workflow.

 If you are new to testing, you can first read my ebook "Software Testing and QPT Automation".

Contact me (rajamanickam.a@gmail.com) for doing PHP Web development and Software Testing.


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Tuesday, July 23, 2024

Building Intelligent Virtual Assistants with Gemini


Read this post to learn about building Intelligent Virtual Assistants using Google Gemini. If you are a beginner, you can access chatGPT/Gemini course.

What Are Virtual Assistants?

Virtual assistants are AI-powered programs designed to perform tasks, provide information, and facilitate interactions with users. They can understand and respond to natural language queries, making them highly versatile tools for a wide range of applications.
Types of Virtual Assistants
  • Personal Assistants: These are designed to help individuals with personal tasks such as setting reminders, managing schedules, and answering general questions. Examples include Google Assistant, Siri, and Alexa.
  • Business Assistants: Tailored for business environments, these assistants can handle customer service inquiries, manage reservations, and provide product information. Examples include chatbots on company websites and customer support bots.
  • Specialized Assistants: These are built for specific industries or functions, such as healthcare, education, or finance. They can assist with specialized tasks like patient management, tutoring, or financial planning.
Key Capabilities of Virtual Assistants
  • Natural Language Processing (NLP): The ability to understand and process human language.
  • Context Awareness: Maintaining context across interactions to provide coherent and relevant responses.
  • Task Automation: Performing tasks like scheduling, reminders, and notifications.
  • Integration: Connecting with other services and applications to enhance functionality (e.g., calendar, email, smart home devices).
Benefits of Using Virtual Assistants
  • Efficiency: Automate repetitive tasks and streamline workflows.
  • Availability: Provide 24/7 support and assistance without human intervention.
  • Scalability: Handle multiple interactions simultaneously, making them ideal for customer service and support.
  • Personalization: Tailor responses and actions based on user preferences and behavior.
Challenges and Considerations
  • Accuracy: Ensuring the assistant understands and responds correctly to user queries.
  • Privacy and Security: Protecting user data and maintaining confidentiality.
  • User Experience: Designing intuitive and user-friendly interactions.
  • Adaptability: Continuously updating and improving the assistant to handle new types of queries and tasks.
The Role of Gemini in Virtual Assistants
Gemini, as part of Google's suite of AI tools, provides advanced capabilities for building intelligent virtual assistants. Its robust NLP, machine learning models, and seamless integration with other Google services make it a powerful platform for developing sophisticated and responsive virtual assistants.
Real-World Applications
  • Customer Support: Automating customer service inquiries to reduce wait times and improve user satisfaction.
  • Healthcare: Assisting with patient management, appointment scheduling, and providing medical information.
  • Education: Offering tutoring, answering student queries, and providing educational content.
  • E-commerce: Assisting with product recommendations, order tracking, and customer queries.
Future Trends in Virtual Assistants
  • Enhanced Personalization: More accurate and context-aware interactions tailored to individual users.
  • Multimodal Capabilities: Combining text, voice, and visual inputs for richer interactions.
  • Advanced AI Integration: Utilizing advanced machine learning and AI models for more complex tasks and interactions.
  • Cross-Platform Availability: Seamless experiences across different devices and platforms.
By understanding the fundamentals of virtual assistants and the capabilities provided by platforms like Gemini, you can create powerful and effective AI-driven solutions to meet various needs.

Benefits of using Gemini for building virtual assistants

Read below the key benefits of using Gemini to develop virtual assistants, highlighting its strengths in natural language processing, integration, customization, and more.

Advanced Natural Language Processing (NLP)

Gemini's powerful NLP capabilities enable virtual assistants to understand and process human language with high accuracy. This allows for:

  • Improved User Understanding: Accurately interpreting user queries, even those with complex structures or colloquial language.
  • Contextual Awareness: Maintaining context over multiple interactions, leading to more relevant and coherent responses.
  • Multi-Language Support: Providing support for a wide range of languages, making virtual assistants accessible to a global audience.

Seamless Integration with Google Services

Gemini integrates effortlessly with other Google services, enhancing the functionality and reach of virtual assistants. Key integrations include:

  • Google Calendar: Managing schedules, setting reminders, and sending notifications.
  • Google Maps: Providing directions, location-based information, and travel time estimates.
  • Google Drive: Accessing and managing documents, spreadsheets, and presentations.
  • Google Search: Fetching real-time information and answering user queries with up-to-date data.

Customization and Flexibility

Gemini offers robust tools for customizing virtual assistants to meet specific needs and preferences. This includes:

  • Custom Intents and Entities: Defining unique intents and entities to tailor the assistant’s understanding and responses.
  • Personalized Interactions: Adapting responses based on user behavior and preferences to create a more engaging experience.
  • Adaptable Workflows: Designing complex workflows and decision trees to handle intricate user interactions seamlessly.

Scalability and Reliability

Built on Google’s cloud infrastructure, Gemini ensures that virtual assistants are both scalable and reliable. Benefits include:

  • High Availability: Ensuring your virtual assistant is available 24/7 without downtime.
  • Load Handling: Managing large volumes of interactions simultaneously, making it suitable for businesses of all sizes.
  • Data Security: Leveraging Google's robust security measures to protect user data and maintain privacy.

Advanced AI and Machine Learning Capabilities

Gemini leverages cutting-edge AI and machine learning technologies to enhance the intelligence and capabilities of virtual assistants. This allows for:

  • Predictive Insights: Anticipating user needs and providing proactive recommendations or actions.
  • Continuous Learning: Improving performance over time by learning from user interactions and feedback.
  • Complex Task Handling: Performing sophisticated tasks such as data analysis, language translation, and personalized content generation.

User-Friendly Development Environment

Gemini provides a development environment that is both powerful and easy to use, making it accessible for developers with varying levels of expertise. Features include:

  • Intuitive Interface: A user-friendly interface that simplifies the process of designing and managing virtual assistants.
  • Comprehensive Documentation: Extensive resources, tutorials, and guides to help developers get started and troubleshoot issues.
  • Supportive Community: Access to a community of developers and experts for collaboration and assistance.

Real-World Success Stories

Many businesses and organizations have successfully leveraged Gemini to create impactful virtual assistants. Examples include:

  • Customer Service Bots: Automating customer support for e-commerce platforms, reducing response times, and improving customer satisfaction.
  • Healthcare Assistants: Assisting patients with appointment scheduling, medication reminders, and providing health information.
  • Educational Tutors: Offering personalized tutoring and support to students, enhancing their learning experience.

Using Gemini for building virtual assistants offers numerous benefits, from advanced NLP and seamless integration with Google services to scalability, reliability, and robust AI capabilities. These advantages make Gemini a powerful tool for creating intelligent, responsive, and effective virtual assistants that can meet diverse user needs and drive business success.

Will update more details soon...
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Monday, July 22, 2024

Opportunity to earn well by referring my ChatGPT/Gemini Course


As you are aware, the demand for learning AI tools like ChatGPT and Google Gemini is very high as they have the potential to increase our creativity and productivity on a large scale.

So, I put significant effort into developing the ChatGPT/Gemini course and selling from https://www.rajamanickam.com/l/ai?layout=profile

Today I ended the initial offer price and increased the price slightly. I hope still the price is affordable and competitive.

If you have already joined as my affiliate, you can actively promote this course as the demand is high at this time. If you haven't joined as an affiliate yet, contact me (rajamanickam.a@gmail.com) to earn a 75% affiliate commission for selling this course, my timesheet software, and the Dream Big ebook. For other ebooks available at https://www.rajamanickam.com/, I am still running the free offer. Tell about the free offer to your friends.

And, contact me for developing web applications using Google Gemini API or any kind of custom PHP web app for an affordable price. 

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Saturday, July 20, 2024

Wellness Technologies


Recently I came to know that Wellness technologies are going to play a major role in business.  So I asked chatGPT to tell me about wellness technologies. Read its answer below. Now you can buy the domain name GetWellNess.Shop

Here are some examples of wellness technologies that are currently making an impact in the health and wellness sector:

  1. Wearable Fitness Trackers:

    • Devices like Fitbit, Apple Watch, and Garmin track physical activity, heart rate, sleep patterns, and other health metrics.
  2. Telemedicine Platforms:

    • Services like Teladoc and Doctor on Demand provide remote medical consultations, allowing patients to connect with healthcare providers from home.
  3. Mental Health Apps:

    • Apps like Headspace and Calm offer guided meditation, mindfulness exercises, and stress management tools.
  4. Nutrition and Diet Apps:

    • MyFitnessPal and Noom help users track their diet, calorie intake, and nutritional goals.
  5. Smart Home Gym Equipment:

    • Products like Peloton and Mirror offer connected fitness experiences with live and on-demand workout classes.
  6. Virtual Reality Therapy:

    • VR platforms like Limbix and Psious are used for exposure therapy, pain management, and mental health treatments.
  7. Genetic Testing Kits:

    • Companies like 23andMe and AncestryDNA provide insights into genetic predispositions for certain health conditions and personalized wellness recommendations.
  8. AI-powered Health Assistants:

    • Virtual assistants like Ada Health and Babylon Health use AI to provide health assessments, symptom checkers, and medical advice.
  9. Smart Medical Devices:

    • Devices like the Withings Smart Scale and Omron Blood Pressure Monitor integrate with apps to track and manage health data.
  10. Sleep Technology:

    • Products like the Oura Ring and Sleep Number Smart Bed monitor sleep patterns and provide insights to improve sleep quality.
  11. Hydration Monitors:

    • Smart water bottles like HidrateSpark track water intake and remind users to stay hydrated.
  12. Posture Correctors:

    • Devices like Upright GO provide real-time feedback and reminders to improve posture.
  13. Personalized Supplementation:

    • Services like Care/of and Persona Nutrition offer personalized vitamin and supplement packs based on individual health assessments.
  14. Health and Wellness Chatbots:

    • Chatbots like Woebot provide mental health support and cognitive-behavioral therapy techniques through conversational AI.
  15. Online Therapy Platforms:

    • Platforms like BetterHelp and Talkspace connect users with licensed therapists for online counseling sessions.
Read more ...

Thursday, July 18, 2024

Start your own business easily


Are you planning to start your own business without spending much? Think about buying our web timesheet software with resale rights

And, I can guide you (for an affordable price) to set up your website and do digital marketing. And, I can develop any other web application based on your own requirements.

As Timesheets have been in high demand for many years, you can sell them comparatively easily.  If you are good at PHP, you can earn additional money by doing custom changes. 

Contact me (Rajamanickam.a@gmail.com) with your LinkedIn profile link to discuss getting the resale rights.

I am planning to offer the resale rights to a few people only. Use this opportunity before it ends.



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Wednesday, July 10, 2024

Now get many ebooks for FREE at Rajamanickam.com


A few months back I launched Rajamanickam.com to sell my ebooks, software, and course. I am offering a 75% affiliate commission for promoting this website. Though many people joined as affiliates, they are mostly inactive. So, I was exploring different ways to promote the website and finally decided to introduce a free offer. Right now you can freely download my ebooks from Rajamanickam.Com website. Though I set all ebooks as Free now, I am planning to set them Free on a rotational basis so that my free offer won't affect the affiliates.


Use this Free offer now before it ends and tell about this free offer to your friends also. Let me know if you face any difficulty in downloading the ebooks. If you like the ebooks, add your Rating/Review.

You can hire me as a freelancer for an affordable charge to do PHP web development, software testing, and to explain about online earning.

Read more ...

Monday, July 8, 2024

What is your opinion about UpWork?


For the past few weeks, I have been actively searching for Freelance Work.  I have good experience in PHP web development and Software Testing as explained here. As I have a significant number of LinkedIn connections, initially I thought I could find freelance work through LinkedIn. But practically LinkedIn didn't help me much to get freelance work though I posted on various groups. Even I tried contacting Connections individually. Then I tried finding freelance work using Reddit. I actively watched various subreddits related to freelance work. I got a few projects through Reddit. But they were very small projects requiring 1 or 2 hours only. However, I had to spend many number of unpaid hours learning the requirement details for those projects. Therefore it was very ineffective. So I thought of using the freelancing site UpWork. But I came to know that I need to spend significant money on getting projects there. Before spending money with UpWork I would like to know whether it is really worth spending money with UpWork, particularly as a beginner without reviews/ratings. Share your UpWork experience through the comments section.

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Monday, June 17, 2024

Updates about my Freelance work


As specified in my previous blog post, I am actively looking for freelance work. I can do PHP Web development and software Testing effectively. I have 25 years of experience in IT. Check my LinkedIn profile here.

Previously I used to accept payment after completing the tasks. Hereafter I have decided to take a project that pays upfront or pays on a daily basis. I made this decision after facing difficulty in collecting the payment after completing the work.


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Wednesday, May 15, 2024

Emerging Medical Technologies


 Read below a chapter from my Emerging Technologies ebook.

The healthcare industry has witnessed significant growth in recent times because of developments happening in various other fields. Irrespective of technological developments, we cannot underestimate the need to follow a proper healthy diet, avoid junk food, perform suitable exercises, maintain a positive mindset, and obtain good sleep to lead a healthy life. And obviously, technology is helping us to follow these things in a better manner. For example, Smartwatches and fitness trackers help us to know the health of our inner organs up to some level which can help us to take some preventive measures to avoid any potential health issues. And various mobile apps are helping to do yoga and meditation. And, even they help to do eye exercises. At the same time over usage of smartphones causes eye issues and posture issues. We have to agree that technology is a double-edged sword that could help us while having the ability to harm us. We need to control and use the technology in appropriate ways.

Advancements happening in other fields push the healthcare industry further. For example, the fast growth of Artificial Intelligence (AI) enabled the discovery of Halicin, a powerful new antibiotic compound that killed many of the world’s most problematic disease-causing bacteria, including some strains that are resistant to all known antibiotics. The growth of AI itself is accelerated by recent advancements in computing systems. Soon, the computing power will be increased further with the help of Nanotechnology, Quantum Computing, Neuromorphic computing, and optical computing systems. The chain of developments will lead to fast growth in various fields including the medical field in the coming days.

AI tool ChatGPT was about 72 percent accurate in overall clinical decision-making, from coming up with possible diagnoses to making final diagnoses and care management decisions. An AI System “BioMind” beats Doctors in diagnosing brain tumors.

An artificial intelligence system that can analyze eye scans taken during a routine visit to an optician or eye clinic and identify patients at a high risk of a heart attack.

Technological advancements enable scientists to explore new concepts in healthcare. For example, researchers developed “Inverse vaccine” which shows the potential to treat multiple sclerosis and other autoimmune diseases. Unlike traditional vaccines that stimulate the immune system to recognize and attack harmful invaders, this inverse vaccine works by erasing the immune system’s memory of a specific molecule.

Scientists are working on creating robots (e.g Anthrobot) from human cells too as they believe these biological robots can perform therapeutic work without the risk of triggering an immune response or requiring immunosuppressants. In the coming days, they could be used for clearing plaque buildup in the arteries of atherosclerosis patients, repairing spinal cord or retinal nerve damage, recognizing bacteria or cancer cells, or delivering drugs to targeted tissues.

Immunotherapy research is showing the potential to extend the healthy lifespan of humans. They are aiming to target the root causes of chronic diseases rather than just addressing the symptoms.

Miniaturization of electronics allows ingestible sensors, cameras, and other medical devices. For example, this Ingestible device detects breathing depression in patients. Even, Ingestible medical devices can be broken down with light. This inflatable pill is embedded with a sensor that continuously tracks the stomach’s temperature for up to 30 days. If the pill needs to be removed from the stomach, a patient can drink a solution of calcium that triggers the pill to quickly shrink to its original size and pass safely out of the body. This ingestible “bacteria-on-a-chip” approach combines sensors made from living cells with ultra-low-power electronics that convert the bacterial response into a wireless signal that can be read by a smartphone. This Origami robot can unfold itself from a swallowed capsule and, steered by external magnetic fields, crawl across the stomach wall to remove a swallowed button battery or patch a wound.

Gene Therapy will play a significant role in redefining the healthcare industry shortly. Gene therapy aims to achieve a therapeutic effect by modifying the genes either in a patient’s own cells or in eggs or sperm. It can be used to treat a variety of diseases, including cancer, cystic fibrosis, and HIV/AIDS. The Nobel Prize-winning CRISPR Gene-editing technology is expected to significantly speed up gene therapy development and clinical translation as it is simpler, faster, and more precise than previous gene-editing tools. UK has already approved CRISPR gene therapy “Casgevy” to cure sickle-cell disease.

Apart from using CRISPR for treating diseases, scientists are using it to produce a Bull Calf designed to produce 75% Male Offspring.

CRISPR has been used to edit human genes within the body to address a blindness-causing gene mutation. China’s Scientist He Jiankui successfully edited the genes of Twins named Lulu and Nana so that they wouldn’t get affected by HIV which causes AIDS, and even their Brains unintentionally enhanced. CRISPR helps alleviate Depression and lowers Cholesterol. Scientists have created Low-Fat Pigs by editing their Genes with CRISPR.

Scientists have developed a gene therapy that was proven in mice to stimulate nerve regrowth across spinal cord injuries and guide nerves to reconnect to their natural targets to restore mobility.

Researchers in Sweden have developed a microscale device for implantation in the eye, which presents new opportunities for cell-based treatment of diabetes and other diseases.

Brain-computer interfaces (BCIs) are systems that can directly record and interpret brain activity, and then use this information to control external devices or software. This has a wide range of potential applications in medicine, like, restoring function to people with paralysis or other neuromuscular disorders, treating neurological disorders such as epilepsy, Parkinson’s disease, and Alzheimer’s disease, and improving communication for people with locked-in syndrome.

Using a brain-computer interface, a clinical trial participant who lost the ability to speak was able to create text on a computer at rates that approach the speed of regular speech just by thinking of saying the words.

The use of a brain-computer interface augmented with a virtual walking avatar can control gait, suggesting the protocol may help patients recover the ability to walk after stroke, some spinal cord injuries, and certain other gait disabilities.

Clinical research has demonstrated that a brain-to-computer hookup can enable people with paralysis to type via direct brain control at the highest speeds and accuracy levels.

Implanting BCI will become easy as Elon Musk’s Neuralink is working on implanting BCI using Robot.

The usage of BCI can increase further as scientists are working on implanting BCI devices without cutting the skull.

3D printing is also contributing significantly to improving healthcare. Scientists in China were able to grow new ears for five children born with an ear defect called microtia. Cartilage-forming cells were taken from the children’s ears and used to grow ear-shaped cartilage. The scientists used CT scanning and 3D printing to build a biodegradable scaffold that perfectly matches the 3D structure of the healthy ear of each of 5 children affected with Microtia. The mold was filled in with cartilage cells taken from the children’s deformed ears that were further grown in the lab.

Using 3D printing, researchers developed a glucose monitor with much better stability and sensitivity than those manufactured through traditional methods.

Scientists are exploring bioprinting techniques to pursue functional blood vessels.

A research team uses 3D printing and jelly-like materials known as hydrogels to take a step toward 3D-printed tissues and organs.

Engineers have developed a silicone aorta that could offer a promising alternative to heart transplants.

A research team treated an originally damaged human liver in a machine for three days outside of the body and then implanted the recovered organ into a cancer patient. One year later, the patient is doing well.

Nanomedicine is a rapidly growing field with the potential to revolutionize healthcare.
Nanoparticles can be used to deliver drugs directly to diseased cells, which can reduce side effects and improve the efficacy of treatment. They can be used to detect diseases at an early stage, when they are more treatable. Nanoparticles can act as regenerative medicine to deliver stem cells or other therapeutic agents to repair damaged tissues or organs.

Nanomedicine researchers have found a way to tame pancreatic cancer – one of the most aggressive and difficult to treat cancers – by delivering immunotherapy directly into the tumor with a device that is smaller than a grain of rice.

Nanotechnology could change the lives of thousands of people living with cystic fibrosis (CF) as research shows it can improve the effectiveness of the CF antibiotic Tobramycin, increasing its efficacy by up to 100,000-fold.

Nanodroplets and Ultrasound ‘Drills’ prove effective at tackling tough Blood Clots.

This stamp-sized device can stick to the skin and can provide continuous ultrasound imaging of internal organs for 48 hours.

Researchers have developed a new biodegradable gel that can help to improve the delivery of cells directly into the living heart and could form a new generation of treatments to repair damage caused by a heart attack.

A new type of ultraviolet light that is safe for people took less than five minutes to reduce the level of indoor airborne microbes by more than 98%.

On adult frogs, which are naturally unable to regenerate limbs, the researchers were able to trigger regrowth of a lost leg using a five-drug cocktail applied in a silicone wearable bioreactor dome that seals in the elixir over the stump for just 24 hours.

Groundbreaking pig heart transplant in a human may help patients awaiting donor hearts.

The Kidney Project’s implantable bioartificial kidney may help to free kidney disease patients from dialysis machines and transplant waiting lists in the coming days.

 An inflatable robotic hand gives amputees real-time tactile control. The smart hand is soft and elastic, weighs about half a pound, and costs a fraction of comparable prosthetics.

Scientists introduced wireless health monitoring patches that use embedded piezoelectric nanogenerators to power themselves with harvested biomechanical energy. It may lead to new autonomous health sensors as well as battery-less wearable electronic devices.

Scientists have developed an injectable gel that can attach to various kinds of soft internal tissues and repair tears resulting from an accident or trauma.

A smartphone-controlled soft brain implant can be recharged wirelessly from outside the body. It enables long-term neural circuit manipulation without the need for periodic disruptive surgeries to replace the battery of the implant.

Specially engineered contact lenses use tears to monitor patient health.

 A study found that hyperbaric oxygen treatments (HBOT) in healthy aging adults can stop the aging of blood cells and reverse the aging process.

The use of telemedicine and remote monitoring technologies is rapidly increasing, allowing patients to receive healthcare services remotely. This can be especially beneficial for patients in rural areas or those with chronic conditions requiring regular monitoring. A research team has developed a method that uses the camera on a person’s smartphone or computer to take their pulse and respiration signal from a real-time video of their face.

Researchers have developed a way to use smartphone images of a person’s eyelids to assess blood hemoglobin levels. The ability to perform one of the most common clinical lab tests without a blood draw could help reduce the need for in-person clinic visits, make it easier to monitor patients who are in critical condition and improve care in low- and middle-income countries where access to testing laboratories is limited.

MIT researchers have developed a way to incorporate electronic sensors into stretchy fabrics, allowing them to create shirts or other garments that could be used to monitor vital signs such as temperature, respiration, and heart rate.

Researchers have developed a platform for self-testing services which is based on artificial intelligence and designed for medical tasks, such as for analyzing diagnostic images.

We can find various medical innovations here.

Irrespective of medical advancements, the scientific world is still struggling to find a cure for many diseases, especially Cancer.

Read more ...

Friday, April 26, 2024

Fixed Price vs Hourly Charges for Freelancing Projects: A Guide for Clients


Check my previous post for hiring me for affordable hourly charges to do Web development (PHP, MySQL), Software Testing, and coaching or do online business.

This blog post is for discussing the pros and cons of fixed price vs hourly charges for outsourcing freelance work. 

The Case for Hourly Charges

Transparency and Client Control: With hourly charges, the client receives regular updates on the project's progress and can review the freelancer's work throughout the process. This allows for course correction and ensures the project aligns with the client's vision.

Quality and Effectiveness: Freelancers are incentivized to invest more time and effort into delivering high-quality work since they're paid based on the hours worked. This can lead to a better final product for the client.

Flexibility and Adaptability: Hourly charges are more adaptable to changing project requirements. If the scope of the project expands, the client only pays for the additional time needed.

Finding the Right Fit: If the initial freelancer isn't a good match, the client can easily replace them without significant financial loss.

Challenges of Hourly Charges

Budget Exceeding Expectations: The final cost of the project can be higher than initially planned, especially if the project scope creeps or the freelancer's hourly rate is high.

Client Management: Clients need to be proactive in requesting regular updates and actively review the freelancer's work to ensure quality and avoid misunderstandings.

The Case for Fixed Price

Budget Certainty: The client knows exactly how much the project will cost upfront, eliminating the risk of going over budget.

Challenges of Fixed Price

Scope Creep: If the project requirements change significantly, the freelancer may need to be compensated extra, or the project may suffer if they're forced to stick to the original price.

Lower Quality Work: Freelancers may be incentivized to cut corners or deliver a less polished product to complete the project within the fixed budget.

Disputes and Relationship Issues: Fixed price projects can lead to disagreements between the client and the freelancer about the scope of work or the final deliverable.

Recommendations

I would recommend hourly charges for most freelance projects due to the greater transparency, flexibility, and potential for higher quality work. However, I acknowledge that fixed pricing can be useful for very small, well-defined tasks.


And, I would not recommend any freelancing platforms due to their fees and restrictions.

When working with hourly charges, avoid pressuring the freelancer to provide an exact estimate upfront. A general timeframe is sufficient.

Choosing between fixed price and hourly charges depends on the specific project and the client's priorities. By understanding the advantages and disadvantages of each approach, clients can make an informed decision that leads to a successful freelance engagement.



Check my previous post for hiring me for affordable hourly charges to do Web development (PHP, MySQL), Software Testing, and coaching or do online business.

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Monday, April 1, 2024

How to Use Gemini and ChatGPT Together to Get the Most Out Of Them


 In this blog post, we'll explore how to leverage the strengths of two large language models, Gemini (formerly known as Bard) and ChatGPT, to create informative and engaging content.

1. Start with Gemini for Factual Information

Gemini is a great tool to use when you need factual information. For instance, if you're writing a blog post about web development best practices, you can ask Gemini to list them. However, Gemini may not always provide the most creative or interesting way to present this information. You can use ChatGPT to rephrase the writing or to include additional information.

2. Use ChatGPT for Creative Writing

This is where ChatGPT comes in. ChatGPT excels at creative writing tasks like poems, scripts, and marketing copy. You can take the factual information you get from Gemini and use ChatGPT to turn it into something more engaging for your audience.

3. Don't Be Afraid to Experiment

You can experiment with both tools to see what works best for you. For example, you can ask Gemini a question and then rephrase the answer using ChatGPT.

4. Manually Verify the Information

It's important to remember that both Google Gemini and ChatGPT can sometimes provide incorrect information. It's always best to manually verify the information you get from them, especially if you're using it for something important like a blog post.

5. Use the Tools You're Most Comfortable With

If you're more familiar with Geini, you might find it easier to use it for most tasks. However, don't be afraid to step outside your comfort zone and try ChatGPT for creative tasks.

6. Stay Up-to-Date on Latest News

Gemini can be a great way to stay up-to-date on the latest news. You can ask it for specific news topics, and it will provide you with summaries of relevant articles. Then you can ask ChatGPT to improve the content writing style.

By using Gemini and ChatGPT together, you can get the best of both worlds.



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