"Hidden states of matter" is not a standardized term in scientific literature, but it might refer to theoretical states or phases of matter that are not easily observable or understood using conventional methods. It could also imply states that may exist under extreme conditions, beyond the typical categories of solid, liquid, gas, and plasma.

Hideo Hosono is a prominent Japanese physicist and materials scientist known for his contributions to the field of condensed matter physics and materials science. He is particularly recognized for his work on oxide semiconductors, including the discovery of high-temperature superconductivity in certain materials and the study of transparent conducting oxides. Hosono has had a significant impact on the development of advanced materials used in various applications, including electronics and energy conversion.

A **supporting hyperplane** is a concept from convex analysis and geometry, particularly in the context of convex sets and optimization. It relates to how we can visualize and understand the boundaries of convex sets in multidimensional spaces. Formally, a hyperplane can be defined as a flat, affine subspace of one dimension less than the dimension of the surrounding space. For example, in a 3-dimensional space, a hyperplane is a 2-dimensional plane.

The term "Highland carrier" can refer to a few different concepts, depending on the context. However, it's not a widely recognized term on its own. Here are a few possibilities: 1. **Geographical Context**: In some contexts, a "Highland carrier" could refer to a transport service that operates in highland or mountainous areas, transporting goods or people through rugged terrains. This could include services such as buses, trucks, or even cable cars designed for these regions.

A High-Performance Instrumented Airborne Platform for Environmental Research typically refers to an advanced aircraft or drone equipped with sophisticated instruments and technology designed for monitoring and studying environmental variables. These platforms are used in various fields, including meteorology, climate science, ecology, and atmospheric studies. They can collect a range of data such as: 1. **Atmospheric Measurements**: Sampling air quality, temperature, humidity, and atmospheric pressure at different altitudes.

A High-Performance Positioning System (HPPS) typically refers to advanced positioning technologies that provide enhanced accuracy, reliability, and performance compared to standard Global Navigation Satellite Systems (GNSS). These systems are often used in applications that require precise location information, such as in autonomous vehicles, drones, agriculture, surveying, construction, and various scientific applications.

High-velocity clouds (HVCs) are a type of interstellar cloud that moves at significant speeds relative to the Milky Way galaxy. These clouds are typically composed of hydrogen, and they are characterized by their high radial velocities, which can be much greater than the average motion of gas in the galaxy.

Hin recombinase is a site-specific recombinase enzyme that is derived from the bacterium *Salmonella enterica*. It is known for its role in genetic rearrangements, particularly the inversion of a specific DNA segment within the bacterial genome. This enzyme catalyzes the exchange of DNA strands at specific recognition sites, facilitating the inversion and shuffling of genetic material.

The Itakura–Saito distance is a measure used primarily in the context of signal processing and speech recognition to quantify the difference between two probability density functions (PDFs) or spectrograms. It is particularly useful for analyzing audio signals, as it provides a way to measure the distortion between two signals in a way that is more consistent with human perception than some other distance measures.

The history of aviation is a fascinating chronicle of human ingenuity and ambition, spanning thousands of years and encompassing various milestones in the development of flying machines, from ancient myths to modern jetliners. Here's a brief overview of key developments: ### 1. Early Concepts and Myths: - **Ancient Legends:** The idea of flying can be traced back to ancient myths, such as the Greek myth of Icarus, who flew too close to the sun with wings made of feathers and wax.

Internet Explorer (IE) is a web browser developed by Microsoft, first released in 1995. Its history is closely tied to the evolution of the internet and web standards. Here’s a brief overview of the key milestones in the history of Internet Explorer: ### 1. Origins and Initial Releases (1995-1999) - **1995**: Internet Explorer was introduced as part of the Windows 95 Plus! add-on package.

The history of metallurgy is a fascinating journey through time that highlights the development and use of metals by human societies. Here’s a brief overview: ### Prehistoric Metallurgy - **Copper Age (Chalcolithic)**: The earliest known use of metals dates back to around 6000 BCE in the Near East, where copper was initially used in its native form. This period marked the transition from stone tools to metal tools.

The history of transport is a vast and intricate subject that encompasses various modes of transportation over thousands of years. Here’s a brief overview of significant events and developments in the evolution of transport: ### Prehistoric Transport - **Foot Travel (circa 200,000 years ago)**: The earliest humans relied on foot travel for hunting and gathering.

HLH Orion typically refers to a specific project or initiative related to HLH, a company or organization engaged in various activities, possibly in the fields of technology, aerospace, or other specialized sectors. However, without additional context, such as the full name of HLH or specifics about the Orion program or project, it's challenging to provide a precise answer.

HoDoMS stands for "Holographic Document Management System." It is typically a technology that utilizes holographic or augmented reality components to manage and organize documents in a more interactive and efficient way. The idea is to enhance traditional document management systems by incorporating 3D visualizations, making it easier for users to interact with and retrieve documents.

The Hollerith Electronic Computer, often referred to as the "Hollerith machine," usually refers to a type of early computer system associated with the work of Herman Hollerith. Hollerith was an American inventor who developed a mechanical system for processing data using punched cards, which he introduced in the late 19th century. His technology was pivotal in the development of data processing for the U.S. Census and laid the groundwork for the future of computing.

A **homogeneous polynomial** is a polynomial whose terms all have the same total degree. In more formal terms, a polynomial \( P(x_1, x_2, \ldots, x_n) \) is called homogeneous of degree \( d \) if every term in the polynomial is of degree \( d \).

Homological integration is a concept that arises in the context of algebraic topology and homological algebra, often dealing with the integration of differential forms on manifolds or in algebraic contexts. The term might not refer to a singular, well-defined concept across mathematics, as it can encompass different ideas depending on the context in which it is used.