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The PAC (Probably Approximately Correct) framework is a theoretical framework that analyzes whether a model (i.e., a product) derived via a machine learning algorithm (i.e., a generalization process) from a random sample of data can be expected to achieve a low prediction error on new data from the same distribution in most cases[1]. This framework is foundational in understanding model generalization in statistical AI and is particularly relevant in evaluating how well machine learning models can infer patterns and make accurate predictions on unseen data.
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Seamarks play a crucial role in pointing out dangers and marking safe channels for mariners[1]. They serve as 'direction-posts', indicating sea-lanes and roads for maritime traffic, marking turning points, and guiding mariners to safe harbors[1]. The principal shoals and sandbanks around the British coasts, often found at the mouths of rivers like the Thames, Mersey, and Humber, and along the eastern counties of England and the east coast of Ireland, are especially dangerous[1]. Similarly, reefs and rocks, particularly common around the coasts of Scotland and the west coasts of England and Ireland, pose significant threats[1]. Seamarks help mariners avoid these hazards.
Seamarks assist mariners in navigation by helping them identify their location and continue their voyage safely[1]. When approaching land, mariners calculate their position, but their reckoning may be inaccurate due to winds, tides, or currents[1]. In such cases, seamarks confirm calculations or help identify the locality if the mariner is lost[1]. By recognizing seamarks, mariners can determine their position and chart a safe course[1].
With the growth in sea traffic and the rise of gigantic steamers that navigate day and night, the necessity for effective seamarks on all coasts has become increasingly urgent[1]. As maritime nations, it is important to provide facilities for vessels to travel to and return from shores safely[1]. Additionally, seamarks encourage foreigners to visit, fostering friendly relations, developing commerce, and promoting international communication[1]. By offering guidance and assistance, seamarks make shores more hospitable and encourage frequent visits[1].
Brief references to beacon-fires and landmarks can be found in the works of old writers, though detailed information about their purpose is not available[1]. As navigation in their time was in a crude condition, the necessity for guiding and warning signals had not made itself manifest[1]. References to seamarks in connection with pillars and other structures setup near the sea can also be found[1].
During the reigns of King Henry VIII and Queen Elizabeth, British commerce and shipping grew which necessitated assisting mariners in approaching and leaving the shores[1]. In 1536, Henry VIII granted a charter to the Trinity House of Newcastle-upon-Tyne, including provisions for building and maintaining two towers with perpetual lights to assist with safe passage to the town and port[1]. Later, in 1566, it was noted that the destruction of steeples and woods used as beacons led to ships being 'miscarried, perished, and lost in the sea', necessitating the preservation of such marks[1]. These references mark the earliest official recognition of seamarks on British coasts, though their use was still developing[1].
Initially, mariners relied on natural landmarks or prominent objects like churches and castles for navigation[1]. While small sea-lights existed, they served merely local purposes like guiding fishing craft into harbors[1]. The systematic exhibition of lights at night became a national concern later, with the construction of fire-towers on salient points of the coasts[1]. These massive towers used wood or coal fires as beacons, though their effectiveness was limited due to weather conditions and fuel consumption[1]. Despite improvements like glazed lanterns, these early systems remained uncertain, highlighting the need for more reliable seamarks[1].
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Sports events are increasingly responding to global health trends by promoting physical activity and addressing public health challenges. The WHO emphasizes leveraging the power of sports to tackle issues like noncommunicable diseases and mental health through effective health promotion measures, partnerships, and accessibility initiatives. Additionally, global sporting events serve as platforms for raising awareness on social issues, as seen during the FIFA Women’s World Cup, which highlighted concerns about misogyny and abuse. There is a recognized need for sustainability in sports, reflecting growing stakeholder pressures and environmental considerations.
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Nikola Tesla's work laid the foundation for many renewable energy technologies, particularly through his development of the alternating-current (AC) power system, which revolutionized electric power distribution. This system is crucial for integrating renewable sources, such as wind and solar, into modern energy grids as it efficiently transmits electricity over long distances[1][6].
Moreover, Tesla envisioned and experimented with wireless transmission of energy, aiming to provide free, limitless power. His ideas anticipated future technologies that are now being explored in renewable energy applications, such as wireless charging for electric vehicles[3][5]. Tesla's commitment to clean energy underscores his lasting influence on renewable technologies today.
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- Microphone: A high-quality microphone is essential for capturing subtle ASMR sounds effectively. - Audio Editing Software: Great audio editing software is crucial for improving sound quality. - Camera: A good camera is important for capturing high-quality video alongside audio. - Tripod: A sturdy tripod helps to stabilize your camera for steady recordings. - Acoustic Treatment: Soundproofing your recording space minimizes unwanted background noise. - Soft Lighting: Use soft, diffused lighting to create a calming visual atmosphere. - Binaural Microphone: Captures a three-dimensional sound experience for immersive ASMR. - USB Microphone: Affordable and user-friendly option for beginners in ASMR content creation. - Pop Filter: Reduces plosive sounds for clearer audio recordings during ASMR sessions. - Video Editing Software: Essential for syncing audio and adding effects to enhance ASMR videos. - Headphones: Noise-canceling headphones allow creators to monitor audio without distractions. - Voice Recorder: A dedicated audio recorder can produce high-quality sound for ASMR. - Soundproofing Panels: These absorb sound to improve acoustics in your recording environment. - DAW Software: Digital Audio Workstations like Audacity and Adobe Audition are perfect for editing. - Acoustic Foam: Used for soundproofing spaces to avoid echoes and enhance audio clarity. - LED Ring Light: Provides soft lighting that enhances the video quality without harsh shadows. - Lavalier Microphone: A clip-on mic that is ideal for capturing sound closely without interference. - Field Recorder: Portable recorders like Zoom H4n Pro capture high-quality ASMR audio. - Multitrack Audio Mixer: Allows for mixing multiple audio sources, enhancing your ASMR recordings. - External Sound Card: Improves audio quality when recording with a laptop or desktop. - Digital Video Camera: Captures high-resolution video that complements ASMR audio quality. - Binaural Recording Setup: Allows for spatial audio effects, enhancing the listener's experience. - Lavalier Wireless Microphone: Ideal for capturing clear audio while moving around in the recording space. - Smartphone: Modern smartphones can serve as both camera and microphone for ASMR videos. - Blue Yeti: A versatile USB microphone known for its excellent sound quality and multiple patterns. - Sennheiser MK 4: A high-quality condenser microphone designed for detailed audio capture. - 3Dio Free Space: A popular binaural microphone offering immersive audio recording for ASMR creators. - Rode NT4: A stereo condenser microphone that captures high-quality sound ideal for ASMR. - Sony Alpha a6400: A mirrorless camera with exceptional low-light performance for video. - Final Cut Pro X: Advanced video editing software suitable for creating polished ASMR content. - DaVinci Resolve: Offers powerful audio and video editing capabilities for high-quality ASMR videos. - VSDC Video Editor: A versatile editor for managing multimedia tracks effectively in ASMR projects.
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The purpose of encryption is to ensure confidentiality by transforming information so that, ideally, only authorized parties can decode it. This process converts the original data, known as plaintext, into an alternative form known as ciphertext, thereby denying intelligible content to potential interceptors[1]. Additionally, encryption protects sensitive data, such as passwords and personal communications, from being exposed during transfer over the Internet[1].
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Language is a crucial element of human identity and serves as a vessel for cultural heritage. The extinction of a language goes beyond the loss of words; it signifies the erasure of a cultural identity, traditional knowledge, and unique worldviews. Approximately every two weeks, a language dies, leading to significant cultural consequences as entire ways of life and understandings of the world vanish along with it[8][9].
Languages are intimately linked to the identities of their speakers. Each language carries unique cultural markers, traditions, and narratives that define a group's heritage. When a language becomes extinct, it often results in the obliteration of the cultural practices, ceremonies, and social structures associated with that language. For instance, terms that denote kinship and community relationships can vanish, disrupting the social fabric that binds community members[8]. Furthermore, unique cultural expressions, such as oral traditions, stories, and rituals, are intricately tied to language. As these languages fade, the rich tapestry of cultural identity loses its threads, leading to a more homogenized world that lacks diversity and richness[8][9].
Indigenous languages, in particular, hold vast reservoirs of ecological and cultural knowledge accumulated over centuries. These languages often encapsulate intricate understandings of local ecosystems, medicinal practices, and sustainable living principles. The extinction of such languages risks not only the loss of specific knowledge but also the loss of entire frameworks for understanding and interacting with the environment. For example, indigenous languages frequently contain key knowledge about biodiversity, ecological practices, and climate adaptations[8]. The disappearance of these languages leads to the erosion of local wisdom that is crucial for addressing contemporary environmental challenges[8][9].
Historically, languages have been the primary means of transmitting knowledge from generation to generation. When a community’s language dies, it often results in a significant gap in the intergenerational transfer of this knowledge, diminishing the community's resilience and adaptability. As one source notes, “the loss of traditional knowledge... diminishes humanity’s cultural diversity and resilience”[8]. Language extinction thus poses a severe threat not only to the speakers but to the broader global community that relies on such diverse ecological insights.
There is a compelling narrative that losing a language equates to losing cultural identity. However, recent studies suggest this perspective may sometimes be oversimplified. For instance, in Australia, many Indigenous individuals now communicate in English or creole languages, and they still find ways to express cultural identity and values in these new contexts[7]. Linguistic adaptability indicates that, while languages may change or evolve, cultural expressions can persist in new linguistic forms. This perspective is vital for understanding the complexity of cultural identity in modern, multilingual societies, especially those influenced by colonial histories[7].
The social dynamics surrounding language use can also impact community cohesion and individual identity. Communities may face linguistic stigma, where speakers of minority languages feel marginalized or judged for their linguistic choices. Such pressures can lead to language avoidance among younger generations, further driving the cycle of language loss[7][8]. Negative perceptions surrounding the capabilities of heritage speakers result in insecurity and reluctance to use their native tongue, which can have damaging effects on their self-identity and interconnectedness within their communities[2][4].
Moreover, the imposition of dominant languages through formal education systems and societal norms often sidelines minority languages, creating environments where the latter are devalued[2][4][5]. The intertwined nature of language, identity, and cultural expression means that the pressures to conform to a dominant language not only endanger minority languages but also threaten the cultural identities they represent.
Amidst the challenges of language extinction, various revitalization efforts are being constructed to support endangered languages and their associated cultures. These efforts emphasize the importance of community engagement and linguistic pride in combating the neglect or loss of heritage languages[5][9]. For example, successful revitalization strategies include language nests, master-apprentice programs, and community-based educational initiatives designed to stimulate interest and fluency among younger generations[5][9]. Such programs aim not only to preserve the language but to empower its speakers by reaffirming the connection between language, culture, and identity.
The overarching goal of these initiatives is to counter the trend of language loss and to celebrate the rich diversity that each language contributes to humanity. As highlighted in various discussions, the collective efforts necessary to revive and maintain endangered languages ultimately serve to reinforce cultural identities, echoing the sentiment that “if we are to survive, to continue on...then we have to have a language”[9].
The extinction of a language has profound implications for culture, identity, and community knowledge. With each disappearing language, unique worldviews, histories, and ecosystems of knowledge risk being lost forever. As society grapples with these issues, understanding the intrinsic relationship between language and culture becomes imperative for fostering a world that values diversity and promotes inclusive efforts toward language preservation. The ongoing dialogue about language revitalization serves as a reminder of the resilience of cultural identity and the vital role that languages play in shaping the human experience.
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