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bio_001 | biology | openstax_biology-2e | 1.1 The Science of Biology | By the end of this section, you will be able to do the following: What is biology? In simple terms, biology is the study of life. This is a very broad definition because the scope of biology is vast. Biologists may study anything from the microscopic or submicroscopic view of a cell to ecosystems and the whole living p... | [
"biology",
"science",
"scientific method",
"study",
"method"
] | [
"the effect",
"general law",
"scientific method",
"this method",
"verified theory",
"the scientific"
] | https://openstax.org/books/biology-2e/pages/1-1-the-science-of-biology | 498 |
bio_002 | biology | openstax_biology-2e | 4.4 The Endomembrane System and Proteins | By the end of this section, you will be able to do the following: The endomembrane system (endo = âwithinâ) is a group of membranes and organelles ( Figure 4.18 ) in eukaryotic cells that works together to modify, package, and transport lipids and proteins. It includes the nuclear envelope, lysosomes, and vesicles,... | [
"rer",
"endomembrane system",
"4.18",
"( figure",
"cell",
"proteins"
] | [] | https://openstax.org/books/biology-2e/pages/4-4-the-endomembrane-system-and-proteins | 491 |
bio_003 | biology | openstax_biology-2e | 7.3 Oxidation of Pyruvate and the Citric Acid Cycle | By the end of this section, you will be able to do the following: If oxygen is available, aerobic respiration will go forward. In eukaryotic cells, the pyruvate molecules produced at the end of glycolysis are transported into the mitochondria, which are the sites of cellular respiration. There, pyruvate is transformed ... | [
"pyruvate",
"coa",
"step",
"acetyl group",
"pathway",
"citric acid cycle",
"first"
] | [
"step"
] | https://openstax.org/books/biology-2e/pages/7-3-oxidation-of-pyruvate-and-the-citric-acid-cycle | 489 |
bio_004 | biology | openstax_biology-2e | 10.3 Control of the Cell Cycle | By the end of this section, you will be able to do the following: The length of the cell cycle is highly variable, even within the cells of a single organism. In humans, the frequency of cell turnover ranges from a few hours in early embryonic development, to an average of two to five days for epithelial cells, and to ... | [
"cell",
"cell cycle",
"cell division",
"events",
"hgh",
"length"
] | [] | https://openstax.org/books/biology-2e/pages/10-3-control-of-the-cell-cycle | 466 |
bio_005 | biology | openstax_biology-2e | 14.5 DNA Replication in Eukaryotes | By the end of this section, you will be able to do the following: Eukaryotic genomes are much more complex and larger in size than prokaryotic genomes. Eukaryotes also have a number of different linear chromosomes. The human genome has 3 billion base pairs per haploid set of chromosomes, and 6 billion base pairs are re... | [
"replication",
"dna",
"eukaryotes",
"chromosomes",
"origin",
"prokaryotes"
] | [] | https://openstax.org/books/biology-2e/pages/14-5-dna-replication-in-eukaryotes | 484 |
bio_006 | biology | openstax_biology-2e | 17.1 Biotechnology | By the end of this section, you will be able to do the following: Biotechnology is the use of biological agents for technological advancement. Biotechnology was used for breeding livestock and crops long before people understood the scientific basis of these techniques. Since the discovery of the structure of DNA in 19... | [
"dna",
"rna",
"nucleic acids",
"biotechnology",
"cells",
"enzymes",
"macromolecules"
] | [
"to understand the basic",
"researchers use various",
"most nucleic acid extraction",
"gel electrophoresis is a"
] | https://openstax.org/books/biology-2e/pages/17-1-biotechnology | 495 |
bio_007 | biology | openstax_biology-2e | 21.1 Viral Evolution, Morphology, and Classification | By the end of this section, you will be able to do the following: Viruses are diverse entities: They vary in structure, methods of replication, and the hosts they infect. Nearly all forms of lifeâfrom prokaryotic bacteria and archaeans, to eukaryotes such as plants, animals, and fungiâhave viruses that infect them.... | [
"viruses",
"first",
"structure",
"evolutionary history",
"virus origins",
"development",
"disease"
] | [
"reasonable hypothesis",
"such hypothesis",
"regressive hypothesis",
"many components of how this"
] | https://openstax.org/books/biology-2e/pages/21-1-viral-evolution-morphology-and-classification | 499 |
bio_008 | biology | openstax_biology-2e | 24.2 Classifications of Fungi | By the end of this section, you will be able to do the following: The kingdom Fungi contains five major phyla that were established according to their mode of sexual reproduction or using molecular data. Unrelated fungi that reproduce without a sexual cycle, were once placed for convenience in a sixth group, the Deuter... | [
"chytrids",
"fungi",
"some species",
"zygomycetes",
"sexual reproduction",
"land"
] | [] | https://openstax.org/books/biology-2e/pages/24-2-classifications-of-fungi | 493 |
bio_009 | biology | openstax_biology-2e | 27.2 Features Used to Classify Animals | By the end of this section, you will be able to do the following: Scientists have developed a classification scheme that categorizes all members of the animal kingdom, although there are exceptions to most ârulesâ governing animal classification ( Figure 27.6 ). Animals have been traditionally classified according ... | [
"( figure",
"27.7",
"symmetry",
"body plan",
"mouth",
"animals"
] | [] | https://openstax.org/books/biology-2e/pages/27-2-features-used-to-classify-animals | 488 |
bio_010 | biology | openstax_biology-2e | 29.5 Birds | By the end of this section, you will be able to do the following: With over 10,000 identified species, the birds are the most speciose of the land vertebrate classes. Abundant research has shown that birds are really an extant clade that evolved from maniraptoran theropod dinosaurs about 150 million years ago. Thus, ev... | [
"feathers",
"birds",
"wings",
"barbules",
"insulation",
"flight"
] | [
"and constant"
] | https://openstax.org/books/biology-2e/pages/29-5-birds | 486 |
bio_011 | biology | openstax_biology-2e | 32.3 Asexual Reproduction | By the end of this section, you will be able to do the following: Many plants are able to propagate themselves using asexual reproduction. This method does not require the investment required to produce a flower, attract pollinators, or find a means of seed dispersal. Asexual reproduction produces plants that are genet... | [
"asexual reproduction",
"plants",
"some plants",
"rise",
"grafting",
"method",
"place"
] | [
"this method",
"natural method",
"these method",
"this",
"natural",
"these"
] | https://openstax.org/books/biology-2e/pages/32-3-asexual-reproduction | 490 |
bio_012 | biology | openstax_biology-2e | 36.2 Somatosensation | By the end of this section, you will be able to do the following: Somatosensation is a mixed sensory category and includes all sensation received from the skin and mucous membranes, as well from as the limbs and joints. Somatosensation is also known as tactile sense, or more familiarly, as the sense of touch. Somatosen... | [
"skin",
"epidermis",
"mechanoreceptors",
"somatosensation",
"blood vessels",
"dermis",
"free nerve endings"
] | [] | https://openstax.org/books/biology-2e/pages/36-2-somatosensation | 498 |
bio_013 | biology | openstax_biology-2e | 39.2 Gas Exchange across Respiratory Surfaces | By the end of this section, you will be able to do the following: The structure of the lung maximizes its surface area to increase gas diffusion. Because of the enormous number of alveoli (approximately 300 million in each human lung), the surface area of the lung is very large (75 m 2 ). Having such a large surface ar... | [
"air",
"lungs",
"amount",
"gas exchange",
"diffusion",
"oxygen",
"mixture"
] | [
"diffusion is a"
] | https://openstax.org/books/biology-2e/pages/39-2-gas-exchange-across-respiratory-surfaces | 484 |
bio_014 | biology | openstax_biology-2e | 42.3 Antibodies | By the end of this section, you will be able to do the following: An antibody , also known as an immunoglobulin (Ig), is a protein that is produced by plasma cells after stimulation by an antigen. Antibodies are the functional basis of humoral immunity. Antibodies occur in the blood, in gastric and mucus secretions, an... | [
"antibody",
"antibodies",
"antigen",
"all antibodies",
"heavy chain",
"plasma cells"
] | [
"of constant",
"the constant",
"repeated constant",
"identical constant",
"three constant",
"four constant"
] | https://openstax.org/books/biology-2e/pages/42-3-antibodies | 480 |
bio_015 | biology | openstax_biology-2e | 45.1 Population Demography | By the end of this section, you will be able to do the following: Populations are dynamic entities. A population consists of all of the individuals of a particular species that occur in a particular area and have the potential to interact with one another. Populations fluctuate based on a number of factors: seasonal an... | [
"populations",
"individuals",
"habitat",
"population size",
"particular species"
] | [
"this method",
"of method",
"this",
"a variety of"
] | https://openstax.org/books/biology-2e/pages/45-1-population-demography | 489 |
che_001 | chemistry | openstax_chemistry-2e | 1.1 Chemistry in Context | By the end of this section, you will be able to: Throughout human history, people have tried to convert matter into more useful forms. Our Stone Age ancestors chipped pieces of flint into useful tools and carved wood into statues and toys. These endeavors involved changing the shape of a substance without changing the ... | [
"matter",
"drugs",
"substance",
"humans",
"pottery",
"fire"
] | [
"and more elaborate smelting",
"step",
"he later developed a"
] | https://openstax.org/books/chemistry-2e/pages/1-1-chemistry-in-context | 496 |
che_002 | chemistry | openstax_chemistry-2e | 2.2 Evolution of Atomic Theory | By the end of this section, you will be able to: If matter is composed of atoms, what are atoms composed of? Are they the smallest particles, or is there something smaller? In the late 1800s, a number of scientists interested in questions like these investigated the electrical discharges that could be produced in low-p... | [
"atoms",
"thomson",
"charges",
"millikan",
"1.6 10",
"apparatus"
] | [] | https://openstax.org/books/chemistry-2e/pages/2-2-evolution-of-atomic-theory | 500 |
che_003 | chemistry | openstax_chemistry-2e | 3.3 Molarity | By the end of this section, you will be able to: Preceding sections of this chapter focused on the composition of substances: samples of matter that contain only one type of element or compound. However, mixturesâsamples of matter containing two or more substances physically combinedâare more commonly encountered i... | [
"solutions",
"relative amount",
"solvent",
"mixture",
"composition"
] | [
"its effect",
"pharmacological effect"
] | https://openstax.org/books/chemistry-2e/pages/3-3-molarity | 483 |
che_004 | chemistry | openstax_chemistry-2e | 5.1 Energy Basics | By the end of this section, you will be able to: Chemical changes and their accompanying changes in energy are important parts of our everyday world ( Figure 5.2 ). The macronutrients in food (proteins, fats, and carbohydrates) undergo metabolic reactions that provide the energy to keep our bodies functioning. We burn ... | [
"energy",
"plants",
"food",
"work",
"bodies",
"fuels",
"raw materials"
] | [
"better method",
"thermochemical principle",
"is the"
] | https://openstax.org/books/chemistry-2e/pages/5-1-energy-basics | 476 |
che_005 | chemistry | openstax_chemistry-2e | 7.1 Ionic Bonding | By the end of this section, you will be able to: As you have learned, ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in i... | [
"ions",
"ionic bonds",
"water",
"ionic compounds",
"anions",
"properties",
"one or more electrons"
] | [] | https://openstax.org/books/chemistry-2e/pages/7-1-ionic-bonding | 490 |
che_006 | chemistry | openstax_chemistry-2e | 8.3 Multiple Bonds | By the end of this section, you will be able to: The hybrid orbital model appears to account well for the geometry of molecules involving single covalent bonds. Is it also capable of describing molecules containing double and triple bonds? We have already discussed that multiple bonds consist of Ï and Ï bonds. Next w... | [
"hybridization",
"molecules",
"ï bond",
"electrons",
"each carbon atom",
"sp 2 hybrid orbitals"
] | [
"orbital model",
"bond theory",
"orbital theory"
] | https://openstax.org/books/chemistry-2e/pages/8-3-multiple-bonds | 728 |
che_007 | chemistry | openstax_chemistry-2e | 9.6 Non-Ideal Gas Behavior | By the end of this section, you will be able to: Thus far, the ideal gas law, PV = nRT , has been applied to a variety of different types of problems, ranging from reaction stoichiometry and empirical and molecular formula problems to determining the density and molar mass of a gas. As mentioned in the previous modules... | [
"gas",
"volume",
"molecules",
"ideal gas law",
"pressure",
"nrt",
"behavior",
"ideal gas behavior"
] | [
"gas law",
"is constant",
"at constant",
"less effect",
"different equation",
"there are several different"
] | https://openstax.org/books/chemistry-2e/pages/9-6-non-ideal-gas-behavior | 486 |
che_008 | chemistry | openstax_chemistry-2e | 11.2 Electrolytes | By the end of this section, you will be able to: When some substances are dissolved in water, they undergo either a physical or a chemical change that yields ions in solution. These substances constitute an important class of compounds called electrolytes . Substances that do not yield ions when dissolved are called no... | [
"ions",
"water",
"solution",
"electricity",
"substances",
"ionic compounds"
] | [
"if the physical or chemical",
"producing",
"this"
] | https://openstax.org/books/chemistry-2e/pages/11-2-electrolytes | 678 |
che_009 | chemistry | openstax_chemistry-2e | 12.4 Integrated Rate Laws | By the end of this section, you will be able to: The rate laws discussed thus far relate the rate and the concentrations of reactants. We can also determine a second form of each rate law that relates the concentrations of reactants and time. These are called integrated rate laws . We can use an integrated rate law to ... | [
"80.0%",
"first",
"integrated rate law",
"reaction",
"equation",
"concentration",
"initial concentration"
] | [
"rate law",
"an equation",
"rate constant",
"this equation",
"this",
"results in an"
] | https://openstax.org/books/chemistry-2e/pages/12-4-integrated-rate-laws | 481 |
che_010 | chemistry | openstax_chemistry-2e | 14.1 Brønsted-Lowry Acids and Bases | By the end of this section, you will be able to: The acid-base reaction class has been studied for quite some time. In 1680, Robert Boyle reported traits of acid solutions that included their ability to dissolve many substances, to change the colors of certain natural dyes, and to lose these traits after coming in cont... | [
"acid",
"water",
"proton",
"compound",
"base",
"ammonia"
] | [] | https://openstax.org/books/chemistry-2e/pages/14-1-bronsted-lowry-acids-and-bases | 462 |
che_011 | chemistry | openstax_chemistry-2e | 15.2 Lewis Acids and Bases | By the end of this section, you will be able to: In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond. A coordinate covalent bond (or dative bond) occurs when o... | [
"complex ion",
"coordinate covalent bond",
"reaction",
"pair",
"electrons",
"formation",
"lewis acid"
] | [
"these equation",
"equilibrium constant",
"formation constant",
"stability constant",
"dissociation constant",
"the equation"
] | https://openstax.org/books/chemistry-2e/pages/15-2-lewis-acids-and-bases | 782 |
che_012 | chemistry | openstax_chemistry-2e | 17.2 Galvanic Cells | By the end of this section, you will be able to: As demonstration of spontaneous chemical change, Figure 17.2 shows the result of immersing a coiled wire of copper into an aqueous solution of silver nitrate. A gradual but visually impressive change spontaneously occurs as the initially colorless solution becomes increa... | [
"half",
"electrode",
"salt bridge",
"copper",
"aqueous solution",
"oxidation"
] | [
"these equation"
] | https://openstax.org/books/chemistry-2e/pages/17-2-galvanic-cells | 487 |
che_013 | chemistry | openstax_chemistry-2e | 18.3 Structure and General Properties of the Metalloids | By the end of this section, you will be able to: A series of six elements called the metalloids separate the metals from the nonmetals in the periodic table. The metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. These elements look metallic; however, they do not conduct electricity as well as ... | [
"metals",
"boron",
"metalloids",
"nonmetals",
"silicon",
"antimony",
"chemical behavior"
] | [] | https://openstax.org/books/chemistry-2e/pages/18-3-structure-and-general-properties-of-the-metalloids | 478 |
che_014 | chemistry | openstax_chemistry-2e | 18.10 Occurrence, Preparation, and Properties of Sulfur | By the end of this section, you will be able to: Sulfur exists in nature as elemental deposits as well as sulfides of iron, zinc, lead, and copper, and sulfates of sodium, calcium, barium, and magnesium. Hydrogen sulfide is often a component of natural gas and occurs in many volcanic gases, like those shown in Figure 1... | [
"sulfur",
"oxygen",
"2â",
"air",
"hydrogen sulfide",
"natural gas",
"liquid sulfur"
] | [
"chemical equation",
"the frasch",
"and so the true"
] | https://openstax.org/books/chemistry-2e/pages/18-10-occurrence-preparation-and-properties-of-sulfur | 345 |
che_015 | chemistry | openstax_chemistry-2e | 20.3 Aldehydes, Ketones, Carboxylic Acids, and Esters | By the end of this section, you will be able to: Another class of organic molecules contains a carbon atom connected to an oxygen atom by a double bond, commonly called a carbonyl group. The trigonal planar carbon in the carbonyl group can attach to two other substituents leading to several subfamilies (aldehydes, keto... | [
"carbonyl group",
"carbon atom",
"ketones",
"oxygen atom",
"aldehydes",
"double bond",
"both aldehydes"
] | [
"nomenclature rule",
"specific rule"
] | https://openstax.org/books/chemistry-2e/pages/20-3-aldehydes-ketones-carboxylic-acids-and-esters | 472 |
com_001 | computer_science | openstax_introduction-computer-science | 1.1 Computer Science | The field of computer science (CS) is the study of computing , which includes all phenomena related to computers, such as the Internet. With foundations in engineering and mathematics, computer science focuses on studying algorithms. An algorithm is a sequence of precise instructions that enables computing. This includ... | [
"algorithm",
"computer science",
"today",
"computing",
"computers"
] | [
"cooking method",
"computer science focuses on studying",
"by studying and applying",
"and other technological",
"the concept of an",
"let us consider binary search"
] | https://openstax.org/books/introduction-computer-science/pages/1-1-computer-science | 496 |
com_002 | computer_science | openstax_introduction-computer-science | 2.1 Computational Thinking | This chapter presents key aspects of computational thinking, including logical thinking, assessment, decomposition, pattern recognition, abstraction, generalization, componentization, and automation. These elements guide how computer scientists approach problems and create well-designed solution building blocks at both... | [
"computational thinking",
"complex problems",
"problem",
"solutions",
"abstraction",
"generalization"
] | [
"in principle",
"their effect",
"adopting effect",
"of method",
"solving and cognitive",
"thought"
] | https://openstax.org/books/introduction-computer-science/pages/2-1-computational-thinking | 490 |
com_003 | computer_science | openstax_introduction-computer-science | 3.3 Formal Properties of Algorithms | Beyond analyzing an algorithm by examining its outputs, computer scientists are also interested in examining its efficiency by performing an algorithmic runtime analysis , a study of how much time it takes to run an algorithm. If you have access to a runnable program, perhaps the most practical way to perform a runtime... | [
"program",
"algorithm",
"performance bugs",
"efficiency",
"experimental analysis",
"algorithmic runtime analysis",
"internet"
] | [
"particularly effect",
"beyond analyzing an",
"evaluates an",
"designing more efficient",
"but once an"
] | https://openstax.org/books/introduction-computer-science/pages/3-3-formal-properties-of-algorithms | 498 |
com_004 | computer_science | openstax_introduction-computer-science | 4.1 Models of Computation | Algorithms are used to solve computational problems and create computational models. A computational model is a system that defines what an algorithm does and how to run it. Examples of such computational models include physical devices that can run software, programming languages, or a design specification of such. A ... | [
"hardware models",
"algorithm",
"computational models",
"examples",
"programming languages"
] | [
"computational model",
"hardware model",
"reduce model",
"abstract model",
"conceptual model",
"programming model"
] | https://openstax.org/books/introduction-computer-science/pages/4-1-models-of-computation | 495 |
com_005 | computer_science | openstax_introduction-computer-science | 5.1 Computer Systems Organization | At its core, a computer system is an electronic device that does computations. These computations appear to the outside world as executing programs. When you play a game, listen to a song, or browse the web, you are instructing your computer to do computations. You may wonder how does the computer function and how do t... | [
"computations",
"computer",
"data",
"internet",
"computer system",
"programs",
"your computer"
] | [] | https://openstax.org/books/introduction-computer-science/pages/5-1-computer-systems-organization | 466 |
com_006 | computer_science | openstax_introduction-computer-science | 5.5 Memory Hierarchy | For the processor to do its job, which is doing the calculations, it must be fed instructions and data. This means the overall performance depends on both the calculationâs speed and the speed by which data and instructions are received. No matter how fast your processor is, you do not get good performance if the str... | [
"memory",
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"processor",
"instructions",
"researchers",
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] | [
"for the",
"no matter how fast your",
"or leading to better"
] | https://openstax.org/books/introduction-computer-science/pages/5-5-memory-hierarchy | 479 |
com_007 | computer_science | openstax_introduction-computer-science | 6.3 Processes and Concurrency | As we mentioned before, the OS divides the tasks it needs to perform into processes. It would be a waste of time for every process to wait until the current process completes. Instead, the OS performs more than one task at the same time, or concurrently. The computing model that improves performance when multiple proce... | [
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] | [
"computing model",
"to wait until the current",
"we learn about",
"and interact with other",
"and another machine or",
"remote"
] | https://openstax.org/books/introduction-computer-science/pages/6-3-processes-and-concurrency | 496 |
com_008 | computer_science | openstax_introduction-computer-science | 7.1 Programming Language Foundations | A high-level programming language is designed to be easy for humans to read, write, and understand. It abstracts away most of the complexities of the underlying hardware and machine code, allowing programmers to focus on solving problems and designing software without needing to manage the low-level details of the comp... | [
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"programmers",
"hll concepts",
"humans",
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"many hlls",
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] | [
"them effect",
"central principle"
] | https://openstax.org/books/introduction-computer-science/pages/7-1-programming-language-foundations | 457 |
com_009 | computer_science | openstax_introduction-computer-science | 8.1 Data Management Focus | In the current digital world, collecting information and facts that are stored digitally by a computer, or data , is a straightforward process. There are many direct and indirect ways, such as social media, that support the data collection process. A large amount of data is collected every day, every hour, and every mi... | [
"data",
"information",
"knowledge",
"study",
"your data",
"social media"
] | [
"data effect",
"the principle",
"using hypothesis",
"is a straightforward",
"that support the data collection",
"modifying the hiring"
] | https://openstax.org/books/introduction-computer-science/pages/8-1-data-management-focus | 496 |
com_010 | computer_science | openstax_introduction-computer-science | 8.5 Data Warehousing, Data Lakes, and Business Intelligence | With the proliferation of data, new techniques that store and handle the data are required. Data warehousing and data lakes are used for storing big data. Business intelligence analyzes gathered data in data warehouses and data lakes to improve strategic decision-making. In the late 1980s, the concept of data warehouse... | [
"data",
"data warehouse",
"schema",
"star schema",
"snowflake schema",
"fact constellation"
] | [
"data model",
"making",
"the next"
] | https://openstax.org/books/introduction-computer-science/pages/8-5-data-warehousing-data-lakes-and-business-intelligence | 497 |
com_011 | computer_science | openstax_introduction-computer-science | 9.2 Software Engineering Process | Imagine a recipe for building software. There are different ways to cook the same dish, but most recipes follow a basic structure with steps like gathering ingredients, preparing them, cooking, and serving. Software engineering processes are similar. They provide a structured approach to creating software applications.... | [
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"years",
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] | [
"process model",
"sdlc method",
"software engineering",
"various software engineering",
"that",
"framework includes a set of"
] | https://openstax.org/books/introduction-computer-science/pages/9-2-software-engineering-process | 488 |
com_012 | computer_science | openstax_introduction-computer-science | 10.3 Solution Architecture Management | The process of managing, designing, and describing the solution engineering in relation to specific business problems is called solution architecture management . A solutions architect manager is responsible for building teams, establishing relationships, setting strategy, and measuring and delivering results for any p... | [
"solution architecture management",
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"chapter 9 software engineering",
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] | [
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"the software",
"software engineering",
"various"
] | https://openstax.org/books/introduction-computer-science/pages/10-3-solution-architecture-management | 485 |
com_013 | computer_science | openstax_introduction-computer-science | 11.4 Sample Responsive WAD with Bootstrap/React and Django | Previously, you learned how to build a Todo web application using Bootstrap and Django and then using Bootstrap with React and Node . This section will review the steps required to update the Todo web application using Bootstrap with React and Django. In this section, the Todo web application implemented will build on ... | [
"django",
"django application",
"react application",
"todo web application",
"bootstrap",
"following code",
"react",
"node"
] | [] | https://openstax.org/books/introduction-computer-science/pages/11-4-sample-responsive-wad-with-bootstrap-react-and-django | 600 |
com_014 | computer_science | openstax_introduction-computer-science | 12.3 Example PaaS and FaaS Deployments of Cloud-Native Applications | This module focuses on building sample applications that illustrate the steps taken to deploy sample applications using various cloud deployment technologies. The first section focuses on how to build a sample cloud-native application on a PaaS platform. The sample application provided illustrates the use of microservi... | [
"examples",
"sample cloud-native application",
"tutorials",
"azure",
"each microservice",
"web service",
"sample applications"
] | [] | https://openstax.org/books/introduction-computer-science/pages/12-3-example-paas-and-faas-deployments-of-cloud-native-applications | 489 |
com_015 | computer_science | openstax_introduction-computer-science | 13.4 Towards Intelligent Autonomous Networked Super Systems | Recent advances with superintelligent AI allow for the seamless vision of incorporating networked autonomous systems into reality. These systems, known as intelligent autonomous networked supersystems (IANS) , are becoming the next major development for chained computing, where intelligent chains of autonomous machines... | [
"metaverse",
"ians",
"recent advances",
"web",
"blockchain"
] | [] | https://openstax.org/books/introduction-computer-science/pages/13-4-towards-intelligent-autonomous-networked-super-systems | 453 |
eco_001 | economics | openstax_principles-economics-3e | 1.1 What Is Economics, and Why Is It Important? | By the end of this section, you will be able to: Economics is the study of how humans make decisions in the face of scarcity. These can be individual decisions, family decisions, business decisions or societal decisions. If you look around carefully, you will see that scarcity is a fact of life. Scarcity means that hum... | [
"scarcity",
"services",
"data",
"economics",
"goods",
"resources",
"everyone",
"them"
] | [] | https://openstax.org/books/principles-economics-3e/pages/1-1-what-is-economics-and-why-is-it-important | 495 |
eco_002 | economics | openstax_principles-economics-3e | 3.3 Changes in Equilibrium Price and Quantity: The Four-Step Process | By the end of this section, you will be able to: Letâs begin this discussion with a single economic event. It might be an event that affects demand, like a change in income, population, tastes, prices of substitutes or complements, or expectations about future prices. It might be an event that affects supply, like a ... | [
"demand",
"supply",
"quantity",
"step",
"event",
"price"
] | [
"supply model",
"the model",
"the law",
"this model",
"the effect",
"demand"
] | https://openstax.org/books/principles-economics-3e/pages/3-3-changes-in-equilibrium-price-and-quantity-the-four-step-process | 499 |
eco_003 | economics | openstax_principles-economics-3e | 5.4 Elasticity in Areas Other Than Price | By the end of this section, you will be able to: The basic idea of elasticityâhow a percentage change in one variable causes a percentage change in another variableâdoes not just apply to the responsiveness of quantity supplied and quantity demanded to changes in the price of a product. Recall that quantity demande... | [
"quantity",
"demand",
"price",
"income",
"income elasticity",
"good",
"percentage change",
"increase"
] | [] | https://openstax.org/books/principles-economics-3e/pages/5-4-elasticity-in-areas-other-than-price | 478 |
eco_004 | economics | openstax_principles-economics-3e | 8.2 How Perfectly Competitive Firms Make Output Decisions | A perfectly competitive firm has only one major decision to makeânamely, what quantity to produce. To understand this, consider a different way of writing out the basic definition of profit : Since a perfectly competitive firm must accept the price for its output as determined by the productâs market demand and sup... | [
"output",
"perfectly competitive firm",
"profit",
"firm",
"quantity",
"total revenue",
"price"
] | [
"profit equation"
] | https://openstax.org/books/principles-economics-3e/pages/8-2-how-perfectly-competitive-firms-make-output-decisions | 497 |
eco_005 | economics | openstax_principles-economics-3e | 11.3 Regulating Natural Monopolies | By the end of this section, you will be able to: Most true monopolies today in the U.S. are regulated, natural monopolies. A natural monopoly poses a difficult challenge for competition policy, because the structure of costs and demand makes competition unlikely or costly. A natural monopoly arises when average costs a... | [
"natural monopoly",
"production",
"quantity",
"average cost",
"half",
"pipes"
] | [] | https://openstax.org/books/principles-economics-3e/pages/11-3-regulating-natural-monopolies | 496 |
eco_006 | economics | openstax_principles-economics-3e | 13.2 How Governments Can Encourage Innovation | A number of different government policies can increase the incentives to innovate, including: guaranteeing intellectual property rights, government assistance with the costs of research and development, and cooperative research ventures between universities and companies. One way to increase new technology is to guaran... | [
"research",
"development",
"patents",
"copyrights",
"intellectual property rights",
"universities",
"companies"
] | [
"copyright law",
"alternative method",
"alternative"
] | https://openstax.org/books/principles-economics-3e/pages/13-2-how-governments-can-encourage-innovation | 495 |
eco_007 | economics | openstax_principles-economics-3e | 15.3 The Safety Net | The U.S. government has implemented a number of programs to assist those below the poverty line and those who have incomes just above the poverty line. Such programs are called the safety net , to recognize that they offer some protection for those who find themselves without jobs or income. From the Great Depression u... | [
"tanf",
"families",
"money",
"poverty line",
"afdc",
"states"
] | [
"into law",
"new law"
] | https://openstax.org/books/principles-economics-3e/pages/15-3-the-safety-net | 498 |
eco_008 | economics | openstax_principles-economics-3e | 18.2 Special Interest Politics | By the end of this section, you will be able to: Many political issues are of intense interest to a relatively small group, as we noted above. For example, many U.S. drivers do not much care where their car tires were madeâthey just want good quality as inexpensively as possible. In September 2009, President Obama an... | [
"legislators",
"tariff",
"tires",
"taxes",
"china",
"35 percent",
"30 percent"
] | [
"environmental rule",
"this rule",
"write law",
"or rule"
] | https://openstax.org/books/principles-economics-3e/pages/18-2-special-interest-politics | 479 |
eco_009 | economics | openstax_principles-economics-3e | 20.3 Components of Economic Growth | By the end of this section, you will be able to: Over decades and generations, seemingly small differences of a few percentage points in the annual rate of economic growth make an enormous difference in GDP per capita. In this module, we discuss some of the components of economic growth, including physical capital, hum... | [
"physical capital",
"technology",
"gdp",
"capita",
"population",
"economic growth",
"human capital"
] | [
"new method"
] | https://openstax.org/books/principles-economics-3e/pages/20-3-components-of-economic-growth | 489 |
eco_010 | economics | openstax_principles-economics-3e | 23.1 Measuring Trade Balances | By the end of this section, you will be able to: A few decades ago, it was common to track the solid or physical items that planes, trains, and trucks transported between countries as a way of measuring the balance of trade. Economists call this measurement the merchandise trade balance . In most high-income economies,... | [
"trade",
"data",
"balance",
"goods",
"services",
"bea"
] | [] | https://openstax.org/books/principles-economics-3e/pages/23-1-measuring-trade-balances | 489 |
CogBench Passages
A curated collection of 120 short academic passages across 8 subjects, used as the source text for the CogBench benchmark — an evaluation of whether LLMs can generate questions that satisfy specified Bloom's-Taxonomy cognitive levels under deterministic, code-checkable constraints.
Anonymized for double-blind review (NeurIPS 2026 Evaluations & Datasets Track). Author and institutional metadata will be added after acceptance.
Evaluative role
This dataset is not a benchmark on its own. It is the source-text input for the CogBench evaluation pipeline, which:
- Asks an LLM to generate questions about a passage at a target Bloom's level (Remember / Understand / Apply / Analyze / Evaluate / Create).
- Runs 28 deterministic constraints (no LLM-as-judge) over the question + passage to produce a per-question constraint-satisfaction rate (CSR).
- Aggregates CSR across passages, subjects, and Bloom's levels.
The dataset is what lets the constraints reference real key_concepts and methods_principles so that constraints like "the question must reference a key concept from the passage" become decidable.
Schema
| Field | Type | Description |
|---|---|---|
passage_id |
string |
Stable identifier, e.g. bio_001, phys_015 |
subject |
string |
One of: biology, chemistry, computer_science, economics, history, mathematics, physics, psychology |
source |
string |
OpenStax book slug (e.g. openstax_biology-2e) |
section |
string |
OpenStax section heading (e.g. 1.1 The Science of Biology) |
text |
string |
Passage prose (HTML stripped, equations cleaned). Mean ≈498 words, range 345–782. |
key_concepts |
list[string] |
Auto-extracted top noun-phrases (used by constraints U3, R2, A2) |
methods_principles |
list[string] |
Auto-extracted process/method markers (used by constraint P3) |
url |
string |
Canonical OpenStax URL the passage was extracted from |
word_count |
int |
Whitespace token count |
Quick load
from datasets import load_dataset
ds = load_dataset("cogbench-anonymous/cogbench-passages", split="train")
print(ds[0]["passage_id"], ds[0]["subject"], ds[0]["word_count"])
Composition
- Total: 120 passages
- Per subject: 15 each across 8 subjects
- Source: OpenStax open-access textbooks (CC BY 4.0)
| Subject | OpenStax book | n |
|---|---|---|
| Biology | Biology 2e | 15 |
| Chemistry | Chemistry 2e | 15 |
| Physics | College Physics 2e | 15 |
| Mathematics | Calculus Volume 1 | 15 |
| Psychology | Psychology 2e | 15 |
| Economics | Principles of Economics 3e | 15 |
| History | U.S. History | 15 |
| Computer Science | Introduction to Computer Science | 15 |
Collection process
- Each subject's canonical OpenStax book was parsed; 15 sections per subject were sampled by length + topical-coverage heuristics.
- Sections shorter than ~200 words or that were exercise/review blocks were dropped.
key_conceptsandmethods_principleswere extracted with spaCy NER + noun-phrase mining.- Authors spot-checked passages for math/equation rendering artifacts; passages with unrecoverable LaTeX fragments were dropped.
- Collection window: February–March 2026.
See the full datasheet (Gebru et al. 2021 format) in the source repository: proposal/methods/passages_datasheet.md.
Intended use
- In scope: evaluating Bloom's-Taxonomy-aligned question generation by LLMs.
- Out of scope: reading-comprehension benchmarks, fact-verification corpora, curriculum design, training data for instruction-tuned models.
Limitations
- English-only. Non-English educational content is not represented.
- 120 passages is small; results should be reported with confidence intervals.
- STEM-skewed — 6 of 8 subjects are STEM. Models tuned for STEM may have an unfair aggregate advantage; subject-level results are reported separately.
- OpenStax-derived. Passages are likely present in many LLM pretraining corpora; CogBench reports a contamination probe alongside main results to quantify exposure.
- Deterministic constraints as proxy. The 28 constraints encode common signals of cognitive level (verb choice, named-entity grounding, structural form) but do not directly measure whether a human would judge a question as "Analyze-level". This proxy assumption is part of what CogBench evaluates, not a guarantee.
- Auto-extracted features.
key_conceptsandmethods_principlesare heuristic; they reflect what an automatic extractor surfaces, not a curated knowledge graph.
Ethical considerations
- No personal or sensitive data; all content is pedagogical material already on the open web under CC BY 4.0.
- No annotator labels — passages are reused verbatim.
Licensing
| Component | License |
|---|---|
Passage prose (text, section, url) |
CC BY 4.0 (OpenStax) |
Auto-extracted key_concepts, methods_principles, schema |
Apache 2.0 |
| Build / load scripts | Apache 2.0 |
Attribution: OpenStax. Textbooks released under Creative Commons Attribution License 4.0. https://openstax.org
Versioning & maintenance
- This is v1.0 (NeurIPS 2026 review).
- A frozen DOI will be minted on Zenodo at camera-ready.
- Future revisions will follow OpenStax book updates (e.g. Biology 2e → 3e); each release will keep prior versions identifiable in the changelog.
Citation
@misc{cogbench2026,
title = {CogBench: Deterministic Evaluation of Bloom's-Taxonomy-Aligned Question Generation by LLMs},
author = {Anonymous},
year = {2026},
note = {NeurIPS 2026 Evaluations \& Datasets Track submission},
url = {https://huggingface.co/datasets/cogbench-anonymous/cogbench-passages}
}
Croissant metadata
The dataset includes a Croissant 1.0 metadata file (croissant.json) with both core and Responsible AI (RAI) fields, as required by the NeurIPS 2026 E&D Track.
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