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Topic Review
History of Islam
The history of Islam concerns the political, social, economic and cultural developments of the Islamic civilization. Despite concerns about the reliability of early sources, most historians believe that Islam originated in Mecca and Medina at the start of the 7th century, approximately 600 years after the founding of Christianity. Muslims, however, believe that it did not start with Muhammad, but that it was the original faith of others whom they regard as prophets, such as Jesus, David, Moses, Abraham, Noah and Adam. In 610 CE, Muhammad began receiving what Muslims consider to be divine revelations. Muhammad's message won over a handful of followers and was met with increasing opposition from Meccan notables. In 618, after he lost protection with the death of his influential uncle Abu Talib, Muhammad migrated to the city of Yathrib (now known as Medina). With Muhammad's death in 632, disagreement broke out over who would succeed him as leader of the Muslim community which was eventually resurrected leading to the First Fitna. The dispute would intensify greatly after the Battle of Karbala, in which Muhammad's grandson Hussein ibn Ali was killed by the ruling Umayyad Caliph Yazid I, and the outcry for revenge divided the early Islamic community. By the 8th century, the Islamic empire extended from Iberia in the west to the Indus river in the east. Polities such as those ruled by the Umayyads (in the Middle East and later in Iberia), Abbasids, Fatimids, and Mamluks were among the most influential powers in the world. The Islamic Golden Age gave rise to many centers of culture and science and produced notable astronomers, mathematicians, doctors and philosophers during the Golden Age of Islam. In the early 13th century, the Delhi Sultanate took over northern parts of Indian subcontinent. In the 13th and 14th centuries, destructive Mongol invasions from the East, along with the loss of population in the Black Death, greatly weakened the traditional centers of the Islamic world, stretching from Persia to Egypt, but in the Early Modern period, the Ottomans, the Safavids, and the Mughals were able to create new world powers again. During the 19th and early 20th centuries, most parts of the Muslim world fell under the influence or direct control of European "Great Powers." Their efforts to win independence and build modern nation states over the course of the last two centuries continue to reverberate to the present day.
  • 4.5K
  • 11 Nov 2022
Topic Review
Mesoamerican Genetic Studies
Mesoamerica is a historically and culturally defined geographic area comprising current central and south Mexico, Belize, Guatemala, El Salvador, and border regions of Honduras, western Nicaragua, and northwestern Costa Rica. The permanent settling of Mesoamerica was accompanied by the development of agriculture and pottery manufacturing (2500 BCE–150 CE), which led to the rise of several cultures connected by commerce and farming. Hence, Mesoamericans probably carried an invaluable genetic diversity partly lost during the Spanish conquest and the subsequent colonial period. Mesoamerican ancient DNA (aDNA) research has mainly focused on the study of mitochondrial DNA in the Basin of Mexico and the Yucatán Peninsula and its nearby territories, particularly during the Postclassic period (900–1519 CE). 
  • 4.5K
  • 24 Nov 2020
Topic Review
UAV-based IoT
The Internet of Things (IoT), which consists of a large number of small low-cost devices, has become a leading solution for smart cities, smart agriculture, smart buildings, smart grids, e-healthcare, etc. Integrating unmanned aerial vehicles (UAVs) with IoT can result in an airborne UAV-based IoT (UIoT) system and facilitate various value-added services from sky to ground. In addition to wireless sensors, various kinds of IoT devices are connected in UIoT, making the network more heterogeneous. In a UIoT system, for achieving high throughput in an energy-efficient manner, it is crucial to design an efficient medium access control (MAC) protocol because the MAC layer is responsible for coordinating access among the IoT devices in the shared wireless medium. Thus, various MAC protocols with different objectives have been reported for UIoT.
  • 4.5K
  • 07 Dec 2020
Topic Review
Teeth Blackening
Teeth blackening or teeth lacquering is a custom of dyeing one's teeth black. It was most predominantly practiced in Southeast Asian and Oceanic cultures, particularly among Austronesian, Austroasiatic, and Kra-Dai-speaking peoples. It was also practiced in Japan prior to the Meiji era, as well as in India. It was also performed among some groups in the Americas, most notably among the Shuar people of northern Peru and Ecuador. Teeth blackening is usually done during puberty. It was primarily done to preserve the teeth into old age, as it prevents tooth decay similar to the mechanism of modern dental sealants. It was seen as a sign of maturity, beauty, and civilization. A common belief is that blackened teeth differentiated humans from animals. Teeth blackening is often done in conjunction with traditions of tooth sharpening and evulsion, as well as other body modification customs like tattoos. Teeth blackening and filing were regarded with fascination and disapproval by early European explorers and colonists. The practice survives in some isolated ethnic groups in Southeast Asia and Oceania but has mostly disappeared after the introduction of Western beauty standards during the colonial era, and continues among many minority groups in China, Pacific Islands and Southeast Asia. It is mainly prevalent in older women, though the practice is still carried on by some younger women. Sometimes artificial teeth are used to achieve blackened teeth. Teeth blackening is commonly confused with the red-stained teeth from betel chewing. However, betel chewing damages the teeth and gums, while teeth blackening does not.
  • 4.5K
  • 21 Nov 2022
Topic Review
Integrated On-Board Charger-Traction Systems
The Integrated On-board Charger (iOBC) is the innovative technique to design the on-board charging system in which the motor coil and traction inverter is used during charging as grid filter and active front-end power factor correction unit respectively. This technique helps to increase charging power density, reduce vehicle size and weight.
  • 4.5K
  • 17 Aug 2022
Topic Review
Lithium Recovery via Chemical Precipitation
Lithium is a vital raw material used for a wide range of applications, such as the fabrication of glass, ceramics, pharmaceuticals, and batteries for electric cars. The accelerating electrification transition and the global commitment to decarbonization have caused an increasing demand for lithium. The current supply derived from brines and hard rock ores is not enough to meet the global demand unless alternate resources and efficient techniques to recover this valuable metal are implemented. 
  • 4.5K
  • 21 Feb 2023
Topic Review
Six-Gear Roadmap towards Smart Factory
The fourth industrial revolution is the transformation of manufacturing into smart manufacturing. Advanced industrial digital technologies that make the trend Industry 4.0 are considered as the transforming force that will enable this transformation. However, these technologies need to be connected, integrated and used effectively to create value and to provide insights for data driven manufacturing. Smart manufacturing is a journey and requires a roadmap to guide manufacturing organizations for its adoption. The proposed roadmap is a simple holistic management strategy for an Industry 4.0 implementation journey. It serves as a strategic practical tool for rapid adoption of Industry 4.0 technologies. It bridges the gap between the advanced technologies and their application in manufacturing industry, especially for SMEs.
  • 4.5K
  • 06 Aug 2021
Topic Review
Foreign Influences on Pompeii
Several non-native societies had an influence on Ancient Pompeian culture. Historians’ interpretation of artefacts, preserved by the Eruption of Mount Vesuvius in 79, identify that such foreign influences came largely from Ancient Greece and Hellenistic cultures of the Eastern Mediterranean, including Egypt. Greek influences were transmitted to Pompeii via the Greek colonies in Magna Graecia (Southern Italy), which were formed in the 8th century BC. Hellenistic influences originated from Roman commerce, and later conquest of Egypt from the 2nd century BC. Specifically, these cultures contributed to the development of Pompeii’s art, architecture and religious spheres. For instance, Greek influences can be identified in the Alexander Mosaic, horse-shoe shaped theatres and Pompeii’s adoption of the Greek pantheon of gods. Examples of Egyptian influences can be found in the Nile Mosaic, garden art in the Villa of Julia Felix and the Cult of Isis.
  • 4.5K
  • 11 Oct 2022
Topic Review
Toxicity of Titanium Compounds
Titanium and its compounds are broadly used in both industrial and domestic products, including jet engines, missiles, prostheses, implants, pigments, cosmetics, food, and photocatalysts for environmental purification and solar energy conversion. Although titanium/titania-containing materials are usually safe for human, animals and environment, increasing concerns on their negative impacts have been postulated. We have reported the state of knowledge about toxicity of titanium, its alloys and oxides. Due to the alarming increase in titania/titanium applications in various daily care products and medical treatment (e.g. dental implants) the possible toxicity and environmental impact should be considered.  The collected data might allow to identify some harms associated with using of titania and titanium compounds.
  • 4.4K
  • 21 Feb 2021
Topic Review Peer Reviewed
Tourism Destination Marketing: Academic Knowledge
A holistic, multi-organization view of marketing or destination management organizations (DMOs) who must muster the best efforts of many partner organizations and individuals (stakeholders) to have the greatest success. Destination marketing is described as “a continuous, sequential process through which a DMO plans, researches, implements, controls and evaluates programs aimed at satisfying tourists’ needs and wants as well as the destination’s and DMO’s visions, goals and objectives”. The effectiveness of marketing activities depends on the efforts and plans of tourism suppliers and other entities. This definition posits that marketing is a managerial function/domain that should be performed in a systematic manner adopting and implementing the appropriate approaches, as well as suitable tools and methods. In doing so, it is believed that a tourism destination (through the organizational structure of a DMO) can attain the expected outputs beneficial to all stakeholders, i.e., the tourism industry, hosting communities/populations, and tourists/visitors. The effective implementation of tourism destination marketing principles and methods constitutes an efficient and smart pillar, a cornerstone to attain a balance/equilibrium between the perceptions and interests, sometimes conflicting, of stakeholders by minimizing the negative impacts and maximizing the benefits resulting from tourism. All the same, it is worth noting that marketing is not a panacea, nor a kind of magic stick. 
  • 4.3K
  • 13 Apr 2022
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