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  • How did feudalism shape medieval society?

    • Discuss the impact of feudalism on medieval society with suitable examples.

  • Physics Question

    They are best quality and knowledgable handwriting notes. I am a physics lecturer, therefore no any mistake. all are perfect and High-quality handwritten Physics notes for Class 12 students.
    Covers all chapters with clear concepts, formulas, diagrams, and solved problems.
    Designed for quick revision before exams.
    Helpful for CBSE board exams.all are unitwise and chapterwise.

  • Endocytoais and its types

    Its defination and two types i. Phagocytosis ii. Potocytosis/pinocytosis

  • i want adjust the formatting of the file as bear guid line

    as per fil atta

  • Physics Question

    This document contains complete handwritten notes for Class 12 Physics covering all chapters.
    Includes clear explanations, important formulas, diagrams, and numericals.
    Perfect for quick revision and board exam preparation.
    Useful for CBSE students and IIT ,NEET .
    Notes are neat, easy to understand, and exam-oriented.

  • Physics Question

    This document contains complete handwritten notes for Class 12 Physics covering all important chapters like Electrostatics, Current Electricity, Magnetism, Electromagnetic Induction, Optics, and Modern Physics.
    The notes include clear explanations, important formulas, diagrams, and solved numericals for better understanding.
    These notes are useful for CBSE board exams and other exams like IIT & NEET.
    The content is neat, well-organized, and easy to revise in less time.
    Suitable for quick revision and concept clarity.

  • Big Data analytics work

    Important note: I need original work i don’t need work like others please work based on the instructions please, you will need multiple things please don’t forget any step, work on it step by step. Read the instructions below.

    1. Create a sample document representing a hotel reservation record in a hotel reservation system. This document should be stored in a NoSQL database like MongoDB. It should include the following fields: reservationID, guestName, guestContact (containing address, phoneNumber, and email), roomDetails (containing roomNumber, roomType, and pricePerNight), checkInDate (YYYY-MM-DD format), checkOutDate(YYYY-MM-DD format), numberOfGuests, servicesRequested (an array such as breakfast, airport pickup, spa, etc.), paymentDetails (containing paymentMethod, totalAmount, and paymentStatus), feedbackRatings (an array containing rating and comment), loyaltyProgram (containing membershipID and membershipLevel), stayHistory (an array containing previous hotel branch visited and visitDate, such as Dubai Marina Branch, Abu Dhabi Downtown Branch, etc.) and reservationStatus (confirmed, cancelled, completed).
    2. Write MongoDB commands to:

    a. Create a database named hotel_management_system.

    b. Create a collection named reservations.

    c. Insert the reservation document you created into the reservations collection.

    d. Insert 9 other reservation documents into the reservations collection. (When creating the reservation documents, ensure that the data values are chosen carefully so that all the queries in Question 2 can be demonstrated and tested successfully.)

    e. Retrieve the information of all reservations.

    f. Retrieve all reservations where the room type is “Suite” and the paymentStatus is “Completed”.

    g. Retrieve all reservations where the servicesRequested array contains “spa”.

    h. Retrieve all guests who have given a rating greater than 4 in feedbackRatings.

    i. Update the membershipLevel of a guest with a specific reservationID to “Gold”.

    j. Use an aggregation pipeline to calculate the total revenue generated by each roomType.

    k. Use an aggregation pipeline to find the average feedback rating for each roomType.

    l. Retrieve reservations where the stayHistory array contains visits to “Dubai Marina Branch”.

    m. Use aggregation to find the number of reservations made for each membershipLevel.

    n. Delete all reservations where the reservationStatus is “cancelled” and checkOutDate is before 2023-01-01.

    o. Using an aggregation pipeline find the total number of services requested for each service type (e.g., breakfast, spa, airport pickup) across all reservations.

    1. Using the pandas library in Python, write code to:

    a. Load the heart.csv dataset from ().

    b. Explore the dataset using head(), info(), and describe().

    c. Identify all the features that have missing values. (Print the missing data before handling).

    d. Handle missing values in at least one column. (Print the missing data after handling)

    e. Create an age_group feature based on existing features in the dataset.

    f. Visualize the distribution of numerical features using histograms or box plots. Explain your interpretation of the data distribution from the histogram/box plot. Are there any outliers? If so, what might be the reason for their presence?

    g. Visualize the relationship between two numerical variables (e.g. age and chol) using a scatter plot. What type of relationship and correlation do you observe between the variables?

    h. Create violin plots for cp (chest pain type) vs thalach (max heart rate achieved). Determine the shape of the distributions and compare them across chest pain types.

    i. Create a heatmap showing correlations between numerical features. Identify the strongest positive, the strongest negative, and the weak correlations. What can you conclude about the relationships between these features?

    j. Select appropriate numerical features to compare multiple variables using a pair plot. Visualize the relationships between these features and analyze the patterns. Summarize key insights gained from the pair plot regarding the dataset.

    1. Explore the UCI dataset on student performance (student-mat.csv) and examine the features in the dataset. The dataset can be obtained from the following link. (). Analyze how studytime and absences impact the final grade G3.

    a. Based on your understanding of regression, which variable would be the predictor (independent variable) and which would be the response (dependent variable)? Why?

    b. Create a scatter plot with studytimeon the x-axis and G3 on the y-axis. Describe the direction, form, and strength of the relationship you observe. Evaluate whether a simple linear regression model is appropriate for this data. Justify your reasoning.

    c. Discuss how the failuresand** age **might influence G3. Should these features be included in a multiple regression model? Justify your reasoning.

    1. Load the California Housing dataset from sklearn. Explore the features in the dataset and analyze how MedInc,** HouseAge**, and AveRooms influence Median House Value (target).

    a. Based on your understanding of regression, which variable would be the predictor (independent variable) and which would be the response (dependent variable)? Why?

    b. Create a scatter plot with MedInc (Median Income) on the x-axis and Median House Value on the y-axis. Analyze the direction, form and strength of the relationship. Assess whether a simple linear regression model would be a suitable fit for this data. If suitable, analyze its fit and evaluate how well the model predicts Median House Value.

    c. Discuss how HouseAge and AveRoomsmight influence Median House Value. Should these features be included in the regression model to enhance prediction accuracy? Justify your reasoning based on the relationships between the variables and the target variable.

    Submission Guidelines

    Your primary submission must be a PDF report that includes answers to all the questions. The report should present your analysis and results in a well-organized manner.

    Tasks 1 and 2 must be completed using MongoDB, and the corresponding JSON file should be submitted as part of your secondary submission.

    Tasks 35 should be completed in a single Google Colab notebook. Include the link to the Google Colab workbook in your PDF report.

    Your report must include:

    Screenshots showing the queries and the results of the execution of every MongoDB operation performed in Tasks 1 and 2. Each screenshot should demonstrate the command executed and the corresponding results to validate your work. (Ensure that the submitted screenshots are clearly visible.)

    Appropriate code snippets, tables, charts, and graphs (where applicable) to clearly illustrate and support your analysis and findings. You are required to interpret all the findings and gain meaningful insights using the data analysis techniques. Ensure that each visual or snippet is properly labelled and referenced in your explanations.

    Explanations of the results obtained from the queries and data analysis.

  • Soil is the topmost layer of earth.

    Language & Version: (e.g., Python 3.11, C++20, Java 17)

    Frameworks/Libraries: (e.g., React 18, FastAPI, NumPy, PyTorch)

    Environment/Compiler: (e.g., GCC, Clang, VS Code, Jupyter Notebook)

    Constraints: (e.g., “No external libraries allowed,” “Must run in O(n) time,” or “Targeting a mobile browser”)

    Input/Output Examples: Seeing what goes in and what you expect to come out is often the clearest way to define a problem

  • Creative Writing Question

    Hi, Im writing a film evaluation essay on The Social Dilemma on Netflix. Ive already written my essay, but I want to make sure everything sounds good. Id like it to feel natural and simple, and Im open to adding anything that could make it better. Please dont make it sound like it was written by AI. I also want help improving how I start and end my paragraphs, as well as how I transition between them. My essay includes an introduction, three body paragraphs, and a conclusion. If anything sounds robotic, please help me fix it. I just need help revising the essay I wrote. My essay is below. I dont want another essay just want mine fixed and better

    The Social Dilemma, directed and produced by Jeff Orlowski, is a powerful documentary that explores the dangers of social media. The film interviews several former employees of big tech companies such as Google, Twitter, Snapchat, Facebook, and Pinterest that explain how these sites use antics to grab users’ attention and keep them engaged. The film discusses how social media controls users through notifications and algorithms, the impact on mental health, and offers solutions.

    One of the arguments in the film is that these platforms goal is to manipulate users rather than connect them. Roger McNamee, a Facebook early investor and venture capitalist, states that tech companies dont sell products anymore, they sell users (00:12:49). The longer users scroll, the more data these platforms collect, and the more they can target users with advertisement. The manipulation goes further to influence users identity without them realizing it. Jaron Lanier, a computer scientist and author, explains, Its the gradual, slight, imperceptible change in your own behavior and perception that is the product (00:14:20). Sandy Parakilas explains how social media companies use growth tactics to get people to spend more time on their apps. The film illustrates this by showing a teenage boy in class who loses his attention when he receives a notification. This shows how fast social media platforms can grab users attention to keep them engaged on their platforms. Social media manipulation leads to effects on users’ mental health.

    The film also talks about how the design of these platforms affects users’ mental health, especially teenagers. Jonathan Haidt, a social psychologist, points out We see a dramatic increase in depression and anxiety among teenagers (00:40:00). The girl takes a selfie using a filter. She feels happy at first, but after reading a negative comment, she runs to the bathroom and cries in front of the mirror. Social media can affect the way people see themselves because they fear how others perceive them. This can lead to insecurity, affect mental health, and even result in suicide, which is why it is important to take action.

    The film suggests ways for users to stay safe on social media. Jaron Lanier argues, the only way to win is to get out of the system (01:24:40). Users need to stop using these platforms if they dont make their platforms safe for users. Its hard to completely stop using these platforms, but as long as users use them they can be manipulated. Tristan Harris, a former Google design ethicist and co-founder of the Center for Humane Technology, suggests, We can demand that these products be designed more humanely (01:28:03). We have the power to force social media platforms to be safer because we are the reason they are making money.

    Before watching The Social Dilemma, I knew how harmful social media was because of my grandmother warning me, but I still used it because it was entertaining. I knew that social media can affect users mentally, but The Social Dilemma revealed to me that social media manipulates users through algorithms and notifications. It also offers solutions to users, which I agree with, because companies should make their platforms safe, but we also should be careful about how we use their platforms. We need to change our habits since the companies wont change theirs, or else we will continue to be controlled by them.

  • help help help

    hi, i need help with this report. I’m in charge of the kpi part… i’m going attach the instructions, the excel, the paper, the teaching ntes