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Chapter 1: What is introductory background information?
Chapter 2: Which background elements are important?
Chapter 3: How can I write background information effectively?
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Background information identifies and describes the history and nature of a well-defined research problem with reference to the existing literature. Background information in your Introduction should indicate the root of the problem being studied, its scope, and the extent to which previous studies have successfully investigated the problem, noting, in particular, where gaps exist that your study attempts to address. Introductory background information differs from a literature review in that it places the research problem in proper context rather than thoroughly examining pertinent literature.
Background information expands upon the key points stated in your introduction but is not the main focus of the paper. Sufficient background information helps your reader determine if you have a basic understanding of the research problem being investigated and promotes confidence in the overall quality of your analysis and findings.
Background information provides the reader with the essential context needed to understand the research problem . Depending on the topic being studied, forms of contextualization may include:
Background information can also include summaries of important, relevant research studies . The key is to summarize for the reader what is known about the specific research problem before you conducted your analysis. This is accomplished with a general review of the foundational research literature (with citations) that report findings that inform your study's aims and objectives.
NOTE : Research studies cited as part of the background information of your introduction should not include very specific, lengthy explanations. This should be discussed in greater detail in your literature review section.
Background of the Problem Section: What do you Need to Consider? Anonymous. Harvard University; Hopkins, Will G. How to Write a Research Paper . SPORTSCIENCE, Perspectives/Research Resources. Department of Physiology and School of Physical Education, University of Otago, 1999; Green, L. H. How to Write the Background/Introduction Section. Physics 499 Powerpoint slides. University of Illinois; Woodall, W. Gill. Writing the Background and Significance Section. Senior Research Scientist and Professor of Communication. Center on Alcoholism, Substance Abuse, and Addictions. University of New Mexico.
Providing background information in the Introduction of a research paper serves as a bridge that links the reader to the topic of your study . But precisely how long and in-depth this bridge should be is largely dependent upon how much information you think the reader will need in order to understand the research problem being discussed and to appreciate why the issues you are investigating are important.
From another perspective, the length and detail of background information also depends on the degree to which you need to demonstrate to your professor how much you understand the topic. Keep this in mind because providing succinct background information can be an effective way to show that you have a clear grasp of key issues and concepts underpinning your overall study. Don't try to show off, though!
Given that the structure and writing style of your background information can vary depending upon the complexity of your research and/or the nature of the assignment, here are some questions to consider while writing :
Background of the Problem Section: What do you Need to Consider? Anonymous. Harvard University; Hopkins, Will G. How to Write a Research Paper . SPORTSCIENCE, Perspectives/Research Resources. Department of Physiology and School of Physical Education, University of Otago, 1999; Green, L. H. How to Write the Background/Introduction Section. Physics 499 Powerpoint slides. University of Illinois; Woodall, W. Gill. Writing the Background and Significance Section. Senior Research Scientist and Professor of Communication. Center on Alcoholism, Substance Abuse, and Addictions. University of New Mexico.
Background Information vs. the Literature Review
Incorporating background information into the Introduction is intended to provide the reader with critical information about the topic being studied, such as highlighting and expanding upon foundational studies conducted in the past, important historical events that inform why and in what ways the research problem exists, or defining key components of your study [concepts, people, places, things]. Although in social sciences research introductory background information can often blend into the literature review portion of the paper, basic background information should not be considered a substitute for a comprehensive review and synthesis of relevant research literature.
FIND US ON
If you can't find an encyclopedia, dictionary or textbook article on your topic, try using broader keywords or ask a reference librarian for help. For example, if your topic is "global warming," consider searching for an encyclopedia on the environment.
Once you have identified keywords, the next step is to find background information on your topic.
Background information serves many purposes:
Background information can be found in:
Structure and writing style, writing tip.
Background information identifies and describes the history and nature of a well-defined research problem with reference to the existing literature. The background information should indicate the root of the problem being studied, appropriate context of the problem in relation to theory, research, and/or practice , its scope, and the extent to which previous studies have successfully investigated the problem, noting, in particular, where gaps exist that your study attempts to address. Background information does not replace the literature review section of a research paper; it is intended to place the research problem in a proper context.
Background information expands upon the key points stated in the beginning of your introduction but is not intended to be the main focus of the paper. It generally supports the question, what did we know about this topic before I did this study? Sufficient background information helps your reader determine if you have a basic understanding of the research problem being investigated and promotes confidence in the overall quality of your analysis and findings. This information provides the reader with the essential context needed to understand the research problem and its significance before moving on to the literature review.
Depending on the problem being studied, forms of contextualization may include one or more of the following:
Background information can also include summaries of important, relevant research studies . This is particularly important if there is an essential or groundbreaking study about the research problem or a key study that refutes or supports your thesis. The key is to summarize for the reader what is known about the specific research problem before you conduct the analysis. This is accomplished with a general review of the foundational research literature [with citations] that document findings informing your study's aims and objectives.
NOTE : Research studies cited as part of the background information of your introduction should not include very specific, lengthy explanations. This should be discussed in greater detail in your literature review section.
Background of the Problem Section: What do you Need to Consider? Anonymous. Harvard University; Hopkins, Will G. How to Write a Research Paper . SPORTSCIENCE, Perspectives/Research Resources. Department of Physiology and School of Physical Education, University of Otago, 1999; Green, L. H. How to Write the Background/Introduction Section . Physics 499 Powerpoint slides. University of Illinois; Woodall, W. Gill. Writing the Background and Significance Section . Senior Research Scientist and Professor of Communication. Center on Alcoholism, Substance Abuse, and Addictions. University of New Mexico.
Providing background information in the introduction of a research paper serves as a bridge that links the reader to the topic of your study . Precisely how long and in-depth this bridge should be is largely dependent upon how much information you think the reader will need to know in order to fully understand the topic being discussed and to appreciate why the issues you are investigating are important.
From another perspective, the length and detail of background information also depends on the degree to which you need to demonstrate to your professor how much you understand the research problem. Keep this in mind because providing pertinent background information can be an effective way to demonstrate that you have a clear grasp of key issues and concepts underpinning your overall study. Don't try to show off, though! And, avoid stating the obvious.
The structure and writing style of your background information can vary depending upon the complexity of your research and/or the nature of the assignment. Given this, here are some questions to consider while writing this part of your introduction :
Almost all introductions to a research problem require some contextualizing, but the scope and breadth of background information varies depending on your assumption about the reader's level of prior knowledge . Despite this assessment, however, background information should be brief and succinct; save any elaboration of critical points or in-depth discussion of key issues for the literature review section of your paper.
Background of the Problem Section: What do you Need to Consider? Anonymous. Harvard University; Hopkins, Will G. How to Write a Research Paper . SPORTSCIENCE, Perspectives/Research Resources. Department of Physiology and School of Physical Education, University of Otago, 1999; Green, L. H. How to Write the Background/Introduction Section . Physics 499 Powerpoint slides. University of Illinois; Woodall, W. Gill. Writing the Background and Significance Section . Senior Research Scientist and Professor of Communication. Center on Alcoholism, Substance Abuse, and Addictions. University of New Mexico.
Background Information vs. the Literature Review
Incorporating background information into the introduction is intended to provide the reader with critical information about the topic being studied, such as, highlighting and expanding upon foundational studies conducted in the past, describing important historical events that inform why and in what ways the research problem exists, or defining key components of your study [concepts, people, places, phenomena]. Although introductory background information can often blend into the literature review portion of the paper in social sciences research , basic background information should not be considered a substitute for a comprehensive review and synthesis of relevant research literature.
Hart, Cris. Doing a Literature Review: Releasing the Social Science Research Imagination . Thousand Oaks, CA: Sage, 1998.
The goal of the introduction is to introduce the topic and provide enough information about it in order to enable the reader to comprehend the significance of your research question. The research question must be clearly and precisely stated in the introduction. The research question is the central question you are trying to answer through your research and writing of the extended essay. This question, if properly composed, will both enable you to maintain your focus on a topic of narrow and limited scope while also help you to maintain the purpose and orientation of your entire investigation. Your extended essay will be assessed in part according to the extent to which the essay appropriately addresses and develops your specific research question. The readers will also evaluate your success in collecting information relevant to the research question. Establish the significance of the research question and explain why it is worthy of study. Briefly and concisely preview your body by providing a plan of investigation (game plan) for the rest of the paper. The game plan briefly explains how you intend to answer the research question.
____ Does your introduction include some background information and place the topic in an appropriate context
_____ Is your research question clearly and exactly focused, and stated (in bold)?
_____ Does your introduction explain the significance and context of your topic? (This topic is an important because…)
_____ Does your introduction explain why your topic is worthy of investigation and still have contemporary relevance? (This topic is worthy of investigation because…)
_____ Does your introduction explain how the research question relates to existing knowledge?
_____ Do you avoid writing lengthy, irrelevant background material?
_____ Do you give the game plan for the rest of the essay?
Background information.
Background information identifies and describes the history and nature of your research question with reference to the existing literature. Background information expands upon the key points stated in the beginning of your introduction but is not intended to be the main focus of the paper. Sufficient background information helps your reader determine if you have a basic understanding of the research question being investigated and promotes confidence in the overall quality of your analysis and conclusion. This information provides the reader with the essential context needed to understand the research question and its significance.
Websites to help:
Background of the Problem Section: What do you Need to Consider?
How to Write a Research Paper .
History research guide.
Common examples of background information sources are dictionaries, encyclopedias, and bibliographies. You may find these sources either as individual books or ebooks by searching our library catalog, or through a library database.
Background information usually adds one or more of the following benefits to your research process:
For best results, seek background information early in the research process. That way, you can use what you learn about foundational concepts to make changes to your research question or plan for next steps.
Background information sources may contain information on many topics from multiple disciplines. You're probably already familiar with one source for general background information, Wikipedia.
To find this type of background information through UH Libraries, try searching the database below with keywords related to your research question.
Some background information sources are less general and instead cover a variety of topics related to a specific person or time period . These types of background information sources tend to be more detailed than the general sources described above.
History is one subject area in which these types of background sources are especially common. You may find databases, books, and ebooks dedicated to background information on highly specific topics, such as the online encyclopedia Handbook of Texas Online .
To look for books or ebooks of background information on your topic, try searching keywords associated with your research topic in the library's catalog , specifying the search term as a subject, rather than title.
However, you may find that sources of background information, even certain encyclopedias and dictionaries, don't look like that at all. This is especially true in disciplines like History, in which highly specific encyclopedias such as Black Women of the Harlem Renaissance Era may be relatively short when compared to broad, multi-subject books.
Instead of relying on the external appearance of your sources to determine what kind of source you are using, it's helpful to know a few traits that distinguish many sources of background information from peer-reviewed, scholarly books:
If you have any questions about background information, please reach out to a librarian!
Background information identifies and describes the history and nature of a well-defined research problem with reference to the existing literature. The background information should indicate the root of the problem being studied, appropriate context of the problem in relation to theory, research, and/or practice , its scope, and the extent to which previous studies have successfully investigated the problem, noting, in particular, where gaps exist that your study attempts to address.
Providing background information in the introduction of a research paper serves as a bridge that links the reader to the topic of your study . Precisely how long and in-depth this bridge should be is largely dependent upon how much information you think the reader will need to know in order to fully understand the topic being discussed and to appreciate why the issues you are investigating are important.
From another perspective, the length and detail of background information also depends on the degree to which you need to demonstrate to your professor how much you understand the research problem. Keep this in mind because providing pertinent background information can be an effective way to demonstrate that you have a clear grasp of key issues and concepts underpinning your overall study. Don't try to show off, though! And, avoid stating the obvious.
The structure and writing style of your background information can vary depending upon the complexity of your research and/or the nature of the assignment. Given this, here are some questions to consider while writing this part of your introduction :
Almost all introductions to a research problem require some contextualizing, but the scope and breadth of background information varies depending on your assumption about the reader's level of prior knowledge . Despite this assessment, however, background information should be brief and succinct; save any elaboration of critical points or in-depth discussion of key issues for the literature review section of your paper.
Background of the Problem Section: What do you Need to Consider? Anonymous. Harvard University; Hopkins, Will G. How to Write a Research Paper . SPORTSCIENCE, Perspectives/Research Resources. Department of Physiology and School of Physical Education, University of Otago, 1999; Green, L. H. How to Write the Background/Introduction Section . Physics 499 Powerpoint slides. University of Illinois; Woodall, W. Gill. Writing the Background and Significance Section . Senior Research Scientist and Professor of Communication. Center on Alcoholism, Substance Abuse, and Addictions. University of New Mexico.
Background Information vs. the Literature Review
Incorporating background information into the introduction is intended to provide the reader with critical information about the topic being studied, such as, highlighting and expanding upon foundational studies conducted in the past, describing important historical events that inform why and in what ways the research problem exists, or defining key components of your study [concepts, people, places, things]. Although in social sciences research introductory background information can often blend into the literature review portion of the paper, basic background information should not be considered a substitute for a comprehensive review and synthesis of relevant research literature.
Hart, Cris. Doing a Literature Review: Releasing the Social Science Research Imagination . Thousand Oaks, CA: Sage, 1998.
If you can't find an encyclopedia, dictionary or textbook article on your topic, try using broader keywords or ask a librarian for help. For example, if your topic is "global warming," con sider searching for an encyclopedia on the environment.
Once you have identified keywords, the next step is to find background information on your topic.
Background information serves many purposes:
Background information can be found in:
These sources are often listed on the "Find Resources" tab of our research by subject guides. You can browse a complete list of the Library's guides by visiting the "Research by Subject" homepage.
University of Texas Arlington Libraries 702 Planetarium Place · Arlington, TX 76019 · 817-272-3000
Home — Essay Samples — History — French Revolution — The Similarities Between Hamilton and Jefferson During Their Rivalry
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Hamilton and jefferson: background and ideologies, similarities in economic policies, similarities in foreign policy.
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FDA recognizes the increased use of artificial intelligence and machine learning (AI/ML) throughout the drug development life cycle and its potential to accelerate this process. For example, AI/ML approaches can be applied to clinical trial patient selection strategies during drug development to predict a patient’s clinical outcome after receiving the investigational treatment based on baseline characteristics (e.g., demographic information, clinical data, vital signs, labs, medical imaging data, and genomic data). These predictive models can identify patients more likely to have worse prognoses or patients more likely to benefit from a treatment, ultimately helping to demonstrate the effectiveness of a drug.
On November 8, 2022, FDA issued an Emergency Use Authorization (EUA) for anakinra (Kineret) for the treatment of COVID-19 in hospitalized adults with pneumonia requiring supplemental oxygen (low- or high-flow oxygen) who are at risk of progressing to severe respiratory failure (SRF) and likely to have an elevated plasma soluble urokinase plasminogen activator receptor (suPAR). Anakinra is the first interleukin-1 inhibitor authorized to treat COVID-19.
The clinical efficacy and safety data used to support the issuance of an EUA for anakinra were primarily based on the SAVEMORE trial, a randomized, double-blind, placebo-controlled study conducted at 37 sites in two countries. The SAVEMORE trial enrolled adult patients with COVID-19 pneumonia who were at risk of progressing to SRF, defined as a respiratory ratio (partial oxygen pressure/fraction of inspired oxygen) below 150 mmHg, necessitating high-flow oxygen, noninvasive ventilation, or mechanical ventilation. Patients enrolled in the trial were required to have a suPAR level ≥ 6 ng/mL assessed by a test available in the two countries where SAVEMORE was conducted. suPAR is a blood protein that rises in patients with COVID-19 and has been proposed as a predictor of disease severity and outcomes.
However, an approved suPAR commercial test is not available in the U.S., which created a challenge during CDER’s review of the EUA application when identifying the patient population most likely to benefit from anakinra. To ensure patients’ timely access to this treatment, the CDER review team used AI/ML to facilitate the identification of patients who could receive the drug under the EUA 1 . The goal was to develop a scoring rule that would ensure a high proportion of patients meeting the criteria would have a suPAR ≥ 6 ng/mL. This was the first time that CDER used AI/ML for a regulatory decision, in this case to identify a population for a drug therapy.
The CDER review team developed the scoring rule using data from the SAVEMORE trial. The team used two AI/ML algorithms (elastic net regression and artificial neural network) independently to predict whether a patient in the SAVEMORE trial had suPAR ≥ 6 ng/mL based on baseline characteristics. The elastic net regression was used to select contributing features (clinical characteristics and common laboratory tests), and a neural network-based model was applied to independently select features and the related cutoff values. This approach was taken to ensure that patients identified by the scoring rule more closely aligned with those in the SAVEMORE trial. A final scoring rule was developed and externally validated using data from the SAVE trial, a prospective, open-label, single-arm, interventional study in which patients with lower respiratory tract infection with the virus that causes COVID-19 and having suPAR ≥ 6 ng/mL were treated with anakinra at 100 mg once daily for 10 days.
The CDER team conducted additional exploratory analyses using data from the SAVEMORE trial to evaluate whether the scoring rule could help identify patients at risk for progressing to SRF, and to evaluate the efficacy of anakinra in patients likely to have suPAR levels ≥ 6 ng/mL and worse outcomes (positive for the scoring rule) and patients who were likely to have suPAR levels < 6 ng/mL and better outcomes (negative for the scoring role).
Based on exploration of the 30 available baseline variables in the SAVEMORE trial, the CDER review team identified eight criteria for the clinical scoring rule. Patients meeting at least three criteria in Table 1 were considered likely to have suPAR ≥ 6 ng/mL at baseline. Both the elastic net regression model and neural network-based model selected the same criteria independently. In both datasets, the scoring rule showed a low false-positive rate and overall was considered appropriate to identify patients likely to have an elevated suPAR.
Age ≥ 75 years |
Severe pneumonia by WHO criteria |
Current/previous smoking status |
Sequential Organ Failure Assessment (SOFA) score ≥3 |
Neutrophil-to-lymphocyte ratio (NLR) ≥7 |
Hemoglobin≤10.5g/dl |
Medical history of ischemic stroke |
Blood urea ≥50 mg/dl and/or medical history of renal disease |
suPAR, soluble urokinase plasminogen activator receptor; WHO, World Health Organization
The CDER team also conducted exploratory efficacy analyses in the SAVEMORE trial to measure illness severity and all-cause mortality by day 28 and all-cause mortality by day 60, comparing anakinra to placebo in the subgroups of patients defined by the scoring rule status. In both the score-positive and score-negative subgroups, participants treated with anakinra had lower odds for more severe disease at day 28 and day 60 compared with those who received placebo.
Based on these exploratory analyses, patients in the SAVEMORE trial who were score-positive appeared to benefit from treatment with anakinra consistent with the overall studied population. It was unclear if patients who were negative for the scoring rule would also benefit. This means identifying patients using the scoring rule to treat with anakinra could potentially exclude patients who might also benefit from anakinra treatment. However, the scoring rule also identifies patients who have a higher risk of progressing to SRF.
In this case, the CDER review team combined the predictive ability of AI/ML with appropriate validation processes to develop a method to identify the patient population who will likely benefit from anakinra treatment under this EUA. These findings show that identifying patients using the scoring rule can increase the probability that these patients will experience the benefits seen in the SAVEMORE trial.
As a result, a patient identification method was developed and described in section 1.1 (Patient Population Identification) of the Fact Sheet for Healthcare Providers: Emergency Use Authorization for anakinra .
One limitation to this approach is the exploratory nature of the development of the scoring rule and its low sensitivity, meaning that some patients who may benefit from treatment with anakinra will not be identified by this scoring rule.
The CDER review team expects the scoring rule to be easy to understand and implement by healthcare providers. Similar approaches could potentially be applied in other situations during drug development, for example, to help with clinical trial patient selection strategies.
As this research shows, AI/ML can be powerful tools to facilitate drug development and regulatory decision-making.
1 Liu, Q, Nair, R, Huang, R, Zhu, H, Anderson, A., Belen, O, Tran, V, Chiu, R, Higgins, K, Chen, J, He, L, Doddapaneni, S, Huang, SM, Nikolov, NP, & Zineh, I, 2024, Using Machine Learning to Determine a Suitable Patient Population for Anakinra for the Treatment of COVID-19 Under the Emergency Use Authorization. , Clin Pharmacol Ther, 115(4): 890–895. doi.org/10.1002/cpt.3191
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Allowing users to switch between standard and night mode is a feature adopted across many websites, mobile devices, etc. It gives the user more control to make reading more comfortable. It is being added to our software as part of the Reading/Web/Accessibility for reading project.
Across Wikimedia wikis, there are efforts underway to introduce night mode in the user's preferences on the desktop and mobile sites. The Wikipedia apps for iOS and Android have already had these options for some time.
A significant road block to implementing night mode is how templates are constructed and styled. Another challenge is the usage of explicit colors, specified as inline CSS styles across various articles.
We can resolve these issues by raising awareness of night mode among editors, especially template editors. This is because templates can be included in many articles, and thus have a great impact for night mode compatibility.
The following are general recommendations and guidelines for editors to keep in mind when composing articles and templates.
For now, you can append ?minervanightmode=1 to the end of any URL to see how the content currently behaves in the night theme. You can also use https://test.m.wikipedia.org/wiki/Special:MobileOptions to enable night mode on our test wiki. We will update this instruction as the feature develops.
Use recommended html markup to describe your templates.
Night mode will ship with styles that automatically fix known-universal problems with templates. This is important for projects with fewer technical editors. It will be possible to opt out of these styles by adding the notheme class to respective element or globally ( phab:T358071 ). Projects that do not make use of these classes will likely get the feature later than others.
More information: Use standardized class names in HTML markup for components in templates across projects
Many of the colors used in day mode have historically been inaccessible. When selecting colors for night mode, please be sure to check existing colors with the WebAIM contrast checker . Please consider modifying luminance to make the colors pass. Consider installing a browser extension such as the WCAG Color Contrast tool ( Chrome , or Firefox ) to get more awareness around the color contrasting issues on your wiki.
Bad example
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A standard readable skin-theme-clientpref-night class will be applied to the HTML element when dark mode has been enabled. However, styles that target night mode should also target prefers-color-scheme as certain users may have opted in via their operating system and subscribed to those styles via skin-theme-clientpref-os . Targeting prefers-color-scheme will style content appropriately for both sets of users.
Template:Example/styles.css
Numerous templates and articles make use of explicit inline colors, when they are not actually necessary. When building new templates, or reviewing existing templates, consider removing inline colors for the background or text. This will allow the current skin to apply its styles to all the elements automatically.
If you are browsing an article in night mode, and notice an element that seems to be clashing (e.g. a bright white table background), it is very likely due to an inline color specified for that element. Consider reviewing the article or template that is outputting that element, and removing the inline color.
If you believe that a certain element should have a specific color, consider looking for an appropriate CSS class (provided by the skin) that can be applied to the element, which would give it a more distinguishing color. If such a CSS class is not available, consider contacting the skin developers with a request to create a new CSS class.
Where you want to style things, it is recommended you use a stylesheet (see Help:TemplateStyles for more information) or a CSS variable .
Template:Example
When defining a background color, it may be tempting not to define the color if it is the same as the article text color. However, when different themes e.g. night mode are applied, this could have unintended consequences (e.g. white text on a yellow background). It is thus recommended that you always define the two together. A lint rule is provided to support editors to identify pages and templates with this issue.
Even if using CSS variables, it is important to explicitly define the color alongside the background to avoid assumptions about the context in which it is being used. For example, a template may be embedded inside another template / table that defines its own backgrounds or colors or there may be global styles applying to the page that may inadvertently impact your own content.
CSS variables can only be defined inside gadgets and site CSS e.g. MediaWiki:Common.css.
When using inline styles to modify text or background, let's use a CSS design token that is supported by the skin. A list of design tokens can be found in the Codex documentation . When using the CSS variables for Codex design tokens, always provide a fallback value for skins where CSS variables are not supported.
You can also define your own CSS variables inside a gadget (for example, the default hidden night mode gadget on English Wikivoyage ).
In this example, the color-subtle design token is used, with #54595d only used as a fallback when CSS variables are not available in the skin. This gives skins with night mode the information needed to adjust the content to a suitable color.
In the current implementation of the Page Content Service (the service used by mobile apps to display articles), night mode works by overriding the colors of most elements with night styles, using the !important CSS property. This is precisely because of the large numbers of templates and elements that specify inline styles. In the web version, this also happens to a lesser extent (primarily on elements relating to infoboxes, navboxes and other common templates).
There may be cases where the color removal is unwarranted or where editors may disagree with the choice made. In such cases, you can include the notheme class in the element's style, which will prevent its color from being overridden (i.e. themed). This will result in the content being styled across themes (e.g. night/light/sepia) in exactly the same way.
In this example, the theme will be overridden inside Wikimedia apps and any colors will be inverted in night mode on desktop or mobile web:
In this example, the template has explicitly requested not to be overridden inside Wikimedia apps and the colors won't be inverted elsewhere:
Certain images (for example, signatures in infoboxes) tend to be black content with transparent backgrounds. In night mode, this results in unreadable SVGs because the black content will be on a dark background. To fix this, you can use a CSS invert filter (using the skin-invert or skin-invert-image class). When the thumbnail is accompanied by a caption you should use the skin-invert-image class to avoid inverting the caption as well. To invert all images in a gallery you can add the skin-invert class to the < gallery > tag.
In this example this can result in a black inked signature on a black background
Here the colors are inverted so the signature becomes white.
For templates with no option to specify the class , you can use a <div> tag to wrap around the template and apply the class there. For example:
Certain images will not be easily invertible in night mode without losing important information (for instance, images with a dark base accompanied by bright colors). In these cases, the best option to preserve the image's original colors is probably to provide a light-colored background rather than invert the image, so that it can be seen in both day and night modes.
Most of the time these are unnecessary, and worse still these will interfere with automatic fixes in place for night mode for your project. These should be removed or moved to TemplateStyles if absolutely necessary to avoid color contrasting issues in the night theme.
The background rule is unnecessary.
Acceptable example
If the background is necessary, define color: inherit as well.
More generally, we want to encourage editors to think of templates and articles as being agnostic with respect to theming and styles. In addition to night mode, there can be any number of potential color themes, and indeed the Wikipedia mobile apps (via the Page Content Service) already offer a "sepia" theme, as well as a "black" theme intended for power-saving OLED screens.
An invert using CSS filters provides a quick way to convert content designed in a light theme into a darker theme. While we cannot recommend this approach for all content , it is still a useful tool that can often be utilized safely and cheaply. The Wikipedia night mode gadget uses the invert CSS filter property to style content. You can prevent an element from having colors inverted by adding the mw-no-invert class. You can also use the skin-invert class to request that the content is inverted by the software when available.
Colorblind readers can have difficulties telling apart and recognizing small colored items. In articles, consider using patterns rather than, or in addition to, color where appropriate. Ideally, where the pattern is separate from the text. Consider using monochrome CSS Background Patterns and reading about how Trello introduced a colorblind friendly mode.
It is quite common for editors to create tables with background colors defined on rows or columns. If the table contains links this can be problematic, as often the color choices will be tailored towards accessibility in the standard theme, or will not consider accessibility at all.
For example the links in this table are accessible in light theme but not the dark theme:
Phab ticket | Description |
---|---|
Links in elements with background color should become black with an underline so they are accessible | |
File pages are not compatible with |
Instead of blue links inside these tables, it might be better to create black links with underlines (to distinguish them from other text).
More information in https://phabricator.wikimedia.org/T360844
From https://www.w3.org/WAI/WCAG21/Understanding/non-text-contrast.html
User Interface Components that are not available for user interaction (e.g., a disabled control in HTML) are not required to meet contrast requirements. An inactive user interface component is visible but not currently operable. An example would be a submit button at the bottom of a form that is visible but cannot be activated until all the required fields in the form are completed.
To reduce the amount of initial work that is required for wikis to adopt night mode, various generalized solutions may have been applied for the time being to pages to help them comply with night mode. These styles will eventually be removed, when wikis have adapted to the new theme.
These are listed here:
The following tickets explain fixes for various namespaces/templates and types of pages that were applied to a single project. They may be useful to other projects with similar templates or outdated copies of those templates.
Please be sure to read the associated discussion – and ask questions if you have any so other projects can benefit from sharing expertise.
Please review the following messages on your wiki:
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Rescue workers struggled to reach isolated villages in the state of Kerala, where torrential rains have washed away terrain. The death toll was expected to rise.
By Sameer Yasir and Anupreeta Das
Reporting from New Delhi
At least 108 people were killed and dozens more injured in the southern Indian state of Kerala after days of heavy rainfall set off multiple landslides in a hilly region, in what government officials called one of its worst natural disasters.
The landslides in the district of Wayanad — a region whose natural, rugged beauty draws millions of tourists every year — uprooted trees, knocked down communication lines, submerged roads and washed away a bridge. Rescue operations were hindered by the region’s terrain, which made it harder to reach hundreds of residents in the areas that were hit the hardest.
“This is one of the worst natural calamities Kerala has ever witnessed,” said Pinarayi Vijayan, the chief minister of Kerala, in a statement. Mr. Vijayan said the damage to homes and livelihoods was “immense,” adding that his government had set up relief camps for thousands of people affected.
The death toll rose throughout the day as rescue workers recovered more bodies from under debris, and the number was expected to rise as the search continued, according to government officials. More than 125 people were injured.
“We are fighting nature at its worst,” said Akhilesh Kumar, an official with India’s National Disaster Response Forces who was overseeing the rescue operation along with the Indian Army and firefighters.
In his statement, Mr. Vijayan said the government was sending tankers of drinking water and rations and setting up temporary hospitals. He said there were efforts underway to identify the dead even as search teams looked for other victims of the catastrophe.
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Learn how to write background information in an essay or paper with examples from personal, political, and scientific essays. Find out how to include the minimum amount of information your reader needs and where to place it in your introduction.
Definition of Background Information. As the name suggests, background information means all information that a reader requires to increase his awareness of the topic an essay is going to explain. Background information is placed shortly after the hook or attention grabber. Both are intertwined, as the hook cannot be separated from the background information.
When writing the background information section of the essay, start with a broad introduction to your topic. Give a brief overview of the topic's subject matter and its significance. This will set the context of the essay and grab your readers' attention. 5. Give Historical Context if Applicable.
Hi there! Writing about your background in a college essay can be a great opportunity to showcase your unique experiences and perspectives. The key is to make sure your essay is both engaging and meaningful. Here are some suggestions on what to include in your background information essay: 1. Significant life events or challenges: Discuss events that shaped your values, outlook on life, or ...
In Casey Copeman's research essay at the end of this chapter, the context and background information for the subject matter after the introduction; for example: Example \(\PageIndex{1}\): The problems surrounding corruption in university athletics have been around ever since sports have been considered important in American culture.
For example, if you were to write an essay about a historical event, the background would include details about the time period, the relevant political and social factors, and any preceding events that led up to the main focus of your essay.
1. Consider the Elements. As was described in some detail in Chapter 2, there are four key elements which may be included as introductory background information, which are (a) introducing the topic, (b) providing a hook, (c) defining key terms, and (d) highlighting topic importance. An effective writer should know when to vary both the length ...
Learn how to write an effective introduction paragraph for your academic essay with four steps: hook, background, thesis, and structure. See examples of introductions on different topics and get tips on how to revise and improve them.
Background information can also include summaries of important research studies. This can be a particularly important element of providing background information if an innovative or groundbreaking study about the research problem laid a foundation for further research or there was a key study that is essential to understanding your arguments.
Chapter 1. Although academic tutors (and students) often spend the most time analysing and perfecting the thesis statement, stance and outline of an introductory paragraph, in reality the majority of an essay's introduction is often dedicated to the inclusion of background information. Because such background may comprise up to 80% of an ...
A study background is a part of your introduction in which you will explain what topic you're examining, what place it takes within the broader area of research, what is known about it, and what is yet to be explained and researched. To achieve the purpose of this section in a research paper, you need to discuss the historical information ...
Background information typically describes the history of the topic or the cause of the problem the topic addresses. It can also establish the topic's importance or show how to solve a problem. Background information is usually three to five sentences and comes after the writer gets the reader's attention. This means they present the principal ...
The background information in an essay will depend on the topic. The background information in an essay on a scientific test may include test parameters, test objectives, test site conditions, sample kinds, sample size, and other background material. If your essay is about COVID 19, your background information may touch on diverse points.
Background Information Examples . Background information is information given in a non-fiction essay/text that the reader needs in order to understand the overall theme of the text or point the writer is attempting to make.. Background information is often provided after the hook, or opening statement that is used to grab the reader's attention.The type and amount of background information ...
All-in-1 Pack. To save yourself 5 Marks, click on the button below to gain unlimited access to all of our background information chapters and worksheets. The All-in-1 Pack includes every chapter in this reader, as well as our beginner, intermediate and advanced worksheets in one handy PDF. Sign up or log in for daily access.
Background Information vs. the Literature Review. Incorporating background information into the Introduction is intended to provide the reader with critical information about the topic being studied, such as highlighting and expanding upon foundational studies conducted in the past, important historical events that inform why and in what ways the research problem exists, or defining key ...
Background Information Essay Example. Background information in an essay should provide context for your story. Include details about your upbringing, cultural background, significant life events, and any challenges you've faced that shaped your perspectives or character. This sets the stage for readers to understand the depth of your ...
Background information serves many purposes: If you are unfamiliar with the topic, it provides a good overview of the subject matter. It helps you to identify important facts related to your topic such as terminology, dates, events, history, and relevant names or organizations. It can help you refine your topic. Background research might lead ...
The background information should indicate the root of the problem being studied, appropriate context of the problem in relation to theory, research, and/or practice, its scope, and the extent to which previous studies have successfully investigated the problem, noting, in particular, where gaps exist that your study attempts to address.
Extended Essay Introduction. The goal of the introduction is to introduce the topic and provide enough information about it in order to enable the reader to comprehend the significance of your research question. The research question must be clearly and precisely stated in the introduction. The research question is the central question you are ...
Background information usually adds one or more of the following benefits to your research process: introduces you to important terms or concepts, points toward other works on your research topic, describes common ideas other scholars already have about the subject. For best results, seek background information early in the research process.
Background Information vs. the Literature Review. Incorporating background information into the introduction is intended to provide the reader with critical information about the topic being studied, such as, highlighting and expanding upon foundational studies conducted in the past, describing important historical events that inform why and in what ways the research problem exists, or ...
For example, if your topic is "global warming," con sider searching for an encyclopedia on the environment. Finding background information. Once you have identified keywords, the next step is to find background information on your topic. Background information serves many purposes: If you are unfamiliar with the topic, it provides a good ...
In this essay, I will explore the factors that contribute to my uniqueness and how they have shaped my identity. By examining my background, interests, and values, it becomes evident that what makes me unique lies in my multifaceted nature and my ability to adapt to different situations.
Hamilton and Jefferson: Background and Ideologies. To fully understand the similarities between Hamilton and Jefferson, it is essential to examine their respective backgrounds and ideologies.
For example, AI/ML approaches can be applied to clinical trial patient selection strategies during drug development to predict a patient's clinical outcome after receiving the investigational ...
Optional Essay. If you wish to provide further information or additional context around your application to the Admissions Committee, please upload a brief explanation of any areas of concern in your academic record or personal history. This does not need to be a formal essay. You may submit bullet points. (Maximum 500 Words) Recommendation
A standard readable skin-theme-clientpref-night class will be applied to the HTML element when dark mode has been enabled. However, styles that target night mode should also target prefers-color-scheme as certain users may have opted in via their operating system and subscribed to those styles via skin-theme-clientpref-os.Targeting prefers-color-scheme will style content appropriately for both ...
Frank Bruni is a contributing Opinion writer who was on the staff of The Times for more than 25 years. In the hours and days to come, many political observers will say that President Biden was ...
At least 108 people were killed and dozens more injured in the southern Indian state of Kerala after days of heavy rainfall set off multiple landslides in a hilly region, in what government ...