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Topic Review
Lotus-Leaf-Inspired Biomimetic Coatings
A universal infrastructural issue is wetting of surfaces; millions of dollars are invested annually for rehabilitation and maintenance of infrastructures including roadways and buildings to fix the damages caused by moisture and frost. The biomimicry of the lotus leaf can provide superhydrophobic surfaces that can repel water droplets, thus reducing the penetration of moisture, which is linked with many deterioration mechanisms in infrastructures, such as steel corrosion, sulfate attack, alkali-aggregate reactions, and freezing and thawing. In cold-region countries, the extent of frost damage due to freezing of moisture in many components of infrastructures will be decreased significantly if water penetration can be minimized. Consequently, it will greatly reduce the maintenance and rehabilitation costs of infrastructures.
  • 4.5K
  • 11 Jun 2022
Topic Review
Institutional Entrepreneurship
Institutional entrepreneurship comprises the activities of agents who disrupt existing social institutions or create new ones, often to enable diffusion, especially of radical innovations, in a market. 
  • 4.5K
  • 25 Sep 2020
Topic Review
Mini-LED and Micro-LED
The mini-LEDs with chip sizes ranging from 100 to 200 μm have already been commercialized for backlight sources in consumer electronics applications. The realized local diming can greatly improve the contrast ratio at relatively low energy consumptions. The micro-LEDs with chip size less than 100 μm, still remain in the laboratory.
  • 4.5K
  • 24 Jun 2021
Topic Review
Math 55
Math 55 is a two-semester long first-year undergraduate mathematics course at Harvard University, founded by Lynn Loomis and Shlomo Sternberg. The official titles of the course are Honors Abstract Algebra (Math 55a) and Honors Real and Complex Analysis (Math 55b). Previously, the official title was Honors Advanced Calculus and Linear Algebra.
  • 4.5K
  • 03 Nov 2022
Topic Review
Mango (Mangifera indica L.) Leaves
Mango (Mangifera indica L.) ascribed to the family Anacardiaceae has been adjudged as the vital traditionally significant and one of the most economically important tropical fruit crop globally.
  • 4.5K
  • 28 May 2021
Topic Review
Cluster Chemistry
In chemistry, a cluster is an ensemble of bound atoms or molecules that is intermediate in size between a molecule and a bulk solid. Clusters exist of diverse stoichiometries and nuclearities. For example, carbon and boron atoms form fullerene and borane clusters, respectively. Transition metals and main group elements form especially robust clusters. Clusters can also consist solely of a certain kind of molecules, such as water clusters. The phrase cluster was coined by F.A. Cotton in the early 1960s to refer to compounds containing metal–metal bonds. In another definition a cluster compound contains a group of two or more metal atoms where direct and substantial metal bonding is present. The prefixed terms "nuclear" and "metallic" are used and imply different meanings. For example, polynuclear refers to a cluster with more than one metal atom, regardless of the elemental identities. Heteronuclear refers to a cluster with at least two different metal elements. The main cluster types are "naked" clusters (without stabilizing ligands) and those with ligands. For transition metal clusters, typical stabilizing ligands include carbon monoxide, halides, isocyanides, alkenes, and hydrides. For main group elements, typical clusters are stabilized by hydride ligands. Transition metal clusters are frequently composed of refractory metal atoms. In general metal centers with extended d-orbitals form stable clusters because of favorable overlap of valence orbitals. Thus, metals with a low oxidation state for the later metals and mid-oxidation states for the early metals tend to form stable clusters. Polynuclear metal carbonyls are generally found in late transition metals with low formal oxidation states. The polyhedral skeletal electron pair theory or Wade's electron counting rules predict trends in the stability and structures of many metal clusters. Jemmis mno rules have provided additional insight into the relative stability of metal clusters.
  • 4.5K
  • 08 Nov 2022
Topic Review
Hindu Views on Monotheism
Hinduism incorporates diverse views on the concept of God. Different traditions of Hinduism have different theistic views, and these views have been described by scholars as polytheism, monotheism, henotheism, panentheism, pantheism, monism, agnostic, humanism, atheism or Nontheism. Monotheism is the belief in a single creator God and the lack of belief in any other Creator. Hinduism is not a monolithic faith and different sects may or may not posit or require such a belief. Religion is considered a personal belief in Hinduism and followers are free to choose the different interpretations within the framework of Karma and reincarnation. Many forms of Hinduism believe in a monotheistic God, such as Krishna followers, Vedanta, Arya samaj, Samkhya school of Vedas etc, Many traditions within Hinduism share the Vedic idea of a metaphysical ultimate reality and truth called Brahman instead. According to Jan Gonda, Brahman denoted the "power immanent in the sound, words, verses and formulas of Vedas" in the earliest Vedic texts. The early Vedic religious understanding of Brahman underwent a series of abstractions in the Hindu scriptures that followed the Vedic scriptures. These scriptures would reveal a vast body of insights into the nature of Brahman as originally revealed in the Vedas. These Hindu traditions that emerged from or identified with the Vedic scriptures and that maintained the notion of a metaphysical ultimate reality would identify that ultimate reality as Brahman. Hindu adherents to these traditions within Hinduism revere Hindu deities and, indeed, all of existence, as aspects of the Brahman. The deities in Hinduism are not considered to be almighty, omnipotent, omniscient and omnibenevolent, and spirituality is considered to be seeking the ultimate truth that is possible by a number of paths. Like other Indian religions, in Hinduism, deities are born, they live and they die in every kalpa (eon, cycle of existence). In Hindu philosophy, there are many different schools. Its non-theist traditions such as Samkhya, early Nyaya, Mimamsa and many within Vedanta such as Advaita do not posit the existence of an almighty, omnipotent, omniscient, omnibenevolent God (monotheistic God), while its theistic traditions posit a personal God left to the choice of the Hindu. The major schools of Hindu philosophy explain morality and the nature of existence through the karma and samsara doctrines, as in other Indian religions. Contemporary Hinduism can be categorized into four major traditions: Vaishnavism, Shaivism, Shaktism, and Smartism. Vaishnavism, Shaivism, and Shaktism worship Vishnu, Shiva, and Devi — the Divine Mother — as the Supreme respectively, or consider all Hindu deities as aspects of the formless Supreme Reality or Brahman. Other minor sects such as Ganapatya and Saura focus on Ganesha and Surya as the Supreme. A sub-tradition within the Vaishnavism school of Hinduism that is an exception is dualistic Dvaita, founded by Madhvacharya in the 13th-century (where Vishnu as Krishna is a monotheistic God). This tradition posits a concept of monotheistic God so similar to Christianity that Christian missionaries in colonial India suggested that Madhvacharya was likely influenced by early Christians who migrated to India, a theory that has been discredited by scholars. Furthermore, many adherents consider these similarities to be superficial and insubstantial; for example, Madhvacharya postulates three co-eternal fundamental realities, consisting of Supreme Being (Vishnu or paramathma), individual souls (jīvātman), and inanimate matter.
  • 4.5K
  • 15 Nov 2022
Topic Review
Autonomous Navigation
Autonomous navigation is a very important area in the huge domain of mobile autonomous vehicles.  Sensor integration is a key concept that is critical to the successful implementation of navigation.  As part of this publication, we review the integration of Laser sensors like LiDAR with vision sensors like cameras.  The past decade, has witnessed a surge in the application of sensor integration as part of smart-autonomous mobility systems. Such systems can be used in various areas of life like safe mobility for the disabled, disinfecting hospitals post Corona virus treatments, driver-less vehicles, sanitizing public areas, smart systems to detect deformation of road surfaces, to name a handful.  These smart systems are dependent on accurate sensor information in order to function optimally. This information may be from a single sensor or a suite of sensors with the same or different modalities. We review various types of sensors, their data, and the need for integration of the data with each other to output the best data for the task at hand, which in this case is autonomous navigation. In order to obtain such accurate data, we need to have optimal technology to read the sensor data, process the data, eliminate or at least reduce the noise and then use the data for the required tasks. We present a survey of the current data processing techniques that implement integration of multimodal data from different types of sensors like LiDAR that use light scan technology, various types of Red Green Blue (RGB) cameras that use optical technology and review the efficiency of using fused data from multiple sensors rather than a single sensor in autonomous navigation tasks like mapping, obstacle detection, and avoidance or localization. This survey will provide sensor information to researchers who intend to accomplish the task of motion control of a robot and detail the use of LiDAR and cameras to accomplish robot navigation
  • 4.5K
  • 30 Oct 2020
Topic Review
Five Precepts
The five precepts (Pali: pañcasīla; Sanskrit: pañcaśīla) or five rules of training (Pali: pañcasikkhapada; Sanskrit: pañcaśikṣapada) is the most important system of morality for Buddhist lay people. They constitute the basic code of ethics undertaken by lay followers of Buddhism. The precepts are commitments to abstain from killing living beings, stealing, sexual misconduct, lying and intoxication. Within the Buddhist doctrine, they are meant to develop mind and character to make progress on the path to enlightenment. They are sometimes referred to as the śrāvakayāna precepts in the Mahāyāna tradition, contrasting them with the bodhisattva precepts. The five precepts form the basis of several parts of Buddhist doctrine, both lay and monastic. With regard to their fundamental role in Buddhist ethics, they have been compared with the ten commandments in Christianity or the ethical codes of Confucianism. The precepts have been connected with utilitarianist, deontological and virtue approaches to ethics. They have been compared with human rights because of their universal nature, and some scholars argue they can complement the concept of human rights. The five precepts were common to the religious milieu of 6th-century BCE India, but the Buddha's focus on awareness through the fifth precept was unique. As shown in Early Buddhist Texts, the precepts grew to be more important, and finally became a condition for membership of the Buddhist religion. When Buddhism spread to different places and people, the role of the precepts began to vary. In countries where Buddhism had to compete with other religions, such as China, the ritual of undertaking the five precepts developed into an initiation ceremony to become a Buddhist lay person. On the other hand, in countries with little competition from other religions, such as Thailand, the ceremony has had little relation to the rite of becoming Buddhist, as many people are presumed Buddhist from birth. Undertaking and upholding the five precepts is based on the principle of non-harming (Pāli and Sanskrit: ahiṃsa). The Pali Canon recommends one to compare oneself with others, and on the basis of that, not to hurt others. Compassion and a belief in karmic retribution form the foundation of the precepts. Undertaking the five precepts is part of regular lay devotional practice, both at home and at the local temple. However, the extent to which people keep them differs per region and time. People keep them with an intention to develop themselves, but also out of fear of a bad rebirth. The first precept consists of a prohibition of killing, both humans and all animals. Scholars have interpreted Buddhist texts about the precepts as an opposition to and prohibition of capital punishment, suicide, abortion and euthanasia. In practice, however, many Buddhist countries still use the death penalty. With regard to abortion, Buddhist countries take the middle ground, by condemning though not prohibiting it. The Buddhist attitude to violence is generally interpreted as opposing all warfare, but some scholars have raised exceptions. The second precept prohibits theft. The third precept refers to adultery in all its forms, and has been defined by modern teachers with terms such as sexual responsibility and long-term commitment. The fourth precept involves falsehood spoken or committed to by action, as well as malicious speech, harsh speech and gossip. The fifth precept prohibits intoxication through alcohol, drugs or other means. Early Buddhist Texts nearly always condemn alcohol, and so do Chinese Buddhist post-canonical texts. Buddhist attitudes toward smoking differ per time and region, but are generally permissive. In modern times, traditional Buddhist countries have seen revival movements to promote the five precepts. As for the West, the precepts play a major role in Buddhist organizations. They have also been integrated in mindfulness training programs, though many mindfulness specialists do not support this because of the precepts' religious import. Lastly, many conflict prevention programs make use of the precepts.
  • 4.5K
  • 22 Nov 2022
Topic Review
Enchanta
Enchanta /ɛnˈtʃɑːntɑː/ (Enchan /ɛnˈtʃɑːn/ in the 2016 series) is a constructed language spoken by the denizens of Encantadia, known as Encantado(s)/Encantada(s) or Diwata (fairies). It was initially created by Suzette Doctolero for the Philippines fantasy television drama saga Encantadia, which aired on GMA Network in 2005, and was later used in the show's sequels, Etheria: Ang Ikalimang Kaharian ng Encantadia and Encantadia: Pag-ibig Hanggang Wakas. The source material of the language appears to have been derived from Philippine languages (particularly Tagalog) and Romance languages. It has its own script, Enchan, which appears to be based on Baybayin. Three songs in the language are written by Doctolero, namely "Asshenti (Love song)", "Hade!! (Etheria theme song)", and "Ivo (Lireo national anthem)", which are all sung by Bayang Barrios for the sequel Etheria in 2006.
  • 4.5K
  • 07 Nov 2022
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