Many industries, notably textiles, firearms, clocks and watches, buttons, horse-drawn vehicles, railroad cars and locomotives, sewing machines, and bicycles, saw expeditious improvement in materials handling, machining, and assembly during the 19th century, although modern concepts such as industrial engineering and logistics had not yet been named.

Many of the above concepts, especially equivalence of categories, adjoint functor pairs, and functor categories, can be situated into the context of higher-dimensional categories.

Many concepts once thought to be analogous, such as the Chinese Wu Xing, are now understood more figuratively.

Many definitions of music implicitly hold that music is a communicative activity which conveys to the listener moods, emotions, thoughts, impressions, or religious, philosophical, sexual, or political concepts or positions.

Many concepts and techniques of analysis and differential equations have been generalized to the setting of Riemannian manifolds.

Many concepts initially introduced by Eiffel later found their way into Java, C #, and other languages.

Many of his ideas about nature and physics presaged important scientific concepts of our time.

Many social anarchists see negative and positive liberty as complementary concepts of freedom.

Many years later, David Lynch directed the film, using only rough concepts by Giger.

Many scientific papers have been published about related concepts.

Many religions use similar concepts, but different terminology, to venerate individuals worthy of honor in some way, e. g., see Hindu saints.

Many states refer to some extent to federal concepts for determining taxable income.

Many scientific concepts are of necessity vague, for instance species in biology cannot be precisely defined, owing to unclear cases such as ring species.

Many graphical user interfaces ( GUIs ), including Mac OS, Microsoft Windows, or the X Window System, are primarily based on 2D graphical concepts.

Many Europeans bought land from Māori, but misunderstanding and different concepts of land ownership led to conflict and bitterness.

; Machine independent vs machine dependent: Many optimizations that operate on abstract programming concepts ( loops, objects, structures ) are independent of the machine targeted by the compiler, but many of the most effective optimizations are those that best exploit special features of the target platform.

Many of the concepts of science and philosophy are often defined culturally and socially.

Many of its concepts come from the ideas and innovations of 20th century modern dance, including floor work and turn-in of the legs.

Many other words related to normative or regulatory concepts derive from this same root, including correct, regulate, and rex ( meaning " king "), whence regal and thence royal.

Many of these concepts would in fact be somewhat theoretical to the average Culture citizen.

Many concepts essential to understanding soil come from individuals not identifiable strictly as soil scientists.

Many concepts from ring theory, such as ideals, Jacobson radicals, and factor rings can be generalized in a straightforward manner to this setting.

Many of the legalistic concepts were compatible ; for example the Viking wapentake, the standard for land division in the Danelaw, was effectively interchangeable with the hundred.

Many elements of target concepts come from source domains and are not preexisting.

Many recurrent connectionist models also incorporate dynamical systems theory.

Many companies have systems, particularly in R & D, which work more or less well, depending upon size and actual belief in the policy on the part of administration, as will be abundantly apparent in subsequent quotations.

Many of the suggested systems seem to have only the most tenuous relationship to the language structures that they purport to represent.

Many school systems now employ school psychologists and child guidance specialists.

Many religions, whether they believe in the soul's existence in another world like Christianity, Islam and many pagan belief systems, or in reincarnation like many forms of Hinduism and Buddhism, believe that one's status in the afterlife is a reward or punishment for their conduct during life.

Many cultures have attached importance to astronomical events, and the Indians, Chinese, and Mayans developed elaborate systems for predicting terrestrial events from celestial observations.

Many stories have developed since the founding long ago to become a part of America's folklore and cultural awareness, and non-native American folklore especially includes any narrative which has contributed to the shaping of American values and belief systems.

Many diseases are transmitted by poorly functioning sewage systems.

Many systems became quite sophisticated in graphic presentation, especially considering that the system was confined to ASCII codes.

Many civilizations and societies have devised a calendar, usually derived from other calendars on which they model their systems, suited to their particular needs.

Many ciphers are based on publicly known algorithms or are open source, and so it is only the difficulty of obtaining the key that determines security of the system, provided that there is no analytic attack ( i. e., a ' structural weakness ' in the algorithms or protocols used ), and assuming that the key is not otherwise available ( such as via theft, extortion, or compromise of computer systems ).

Many worms that have been created are designed only to spread, and don't attempt to change the systems they pass through.

Many systems for generating musical scores actually existed well before the time of computers.

Many ( but not all ) computer systems use extensions in file names to help identify what they contain, also known as the file type.

Many modern computer systems provide methods for protecting files against accidental and deliberate damage.

Many systems have unintentionally resulted in the first possibility.

Many religious and mythological systems contain myths about a paradise.

Many systems of collation are based on numerical order or alphabetical order, or extensions and combinations thereof.

Many large cable systems have upgraded or are upgrading their equipment to allow for bi-directional signals, thus allowing for greater upload speed and always-on convenience, though these upgrades are expensive.

Many other coordinate systems have been developed since Descartes, such as the polar coordinates for the plane, and the spherical and cylindrical coordinates for three-dimensional space.

Many operating systems use name resolution logic that allows the administrator to configure selection priorities for available name resolution methods.

Many small-format digital SLR camera systems allow using many of the same lenses on both full-frame and “ cropped format ” cameras.

Many of the people involved with INGRES became convinced of the future commercial success of such systems, and formed their own companies to commercialize the work but with an SQL interface.

Many results in classical thermodynamics are not easily applied to non-equilibrium systems.

Many patented their systems such as Dee Dee Chandler of New Orleans 1904-05.