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A Journey to Hear: The Evolution of Cochlear Implants 听觉之旅人工耳蜗的演变
Pub Date : 2024-01-12 DOI: 10.3390/encyclopedia4010011
Michael Athanasopoulos, Pinelopi Samara, Ioannis Athanasopoulos
Cochlear implants (CIs), a revolutionary breakthrough in auditory technology, have profoundly impacted the lives of individuals with severe hearing impairment. Surgically implanted behind the ear and within the delicate cochlea, these devices represent a direct pathway to restoring the sense of hearing. Implanting hope alongside innovation, their captivating history unfolds through pivotal dates and transformative milestones. From the first human implantation by Drs. William House and John Doyle in 1961 to FDA approval in 1984, each step in their evolution mirrors a triumph of human ingenuity. The 1990s witnessed significant miniaturization, enhancing accessibility, while the 21st century brought about improvements in speech processing and electrode technology. These strides have elevated CIs beyond functional devices to life-changing instruments, enriching both auditory experiences and communication skills. This entry delves into the captivating history of CIs, spotlighting key dates that paint a vivid picture of challenges overcome and remarkable progress achieved. It explores the people and moments that defined their development, ultimately shaping these implants into indispensable tools that continually redefine the landscape of hearing assistance.
人工耳蜗 (CI) 是听觉技术的革命性突破,对严重听力障碍患者的生活产生了深远的影响。这些设备通过手术植入耳后娇嫩的耳蜗内,是恢复听觉的直接途径。在创新的同时植入希望,通过关键的日期和变革性的里程碑,它们引人入胜的历史徐徐展开。从 1961 年 William House 和 John Doyle 医生首次为人类植入耳蜗到 1984 年获得美国食品药品管理局的批准,耳蜗发展的每一步都反映了人类智慧的胜利。20 世纪 90 年代,植入式人工耳蜗实现了大幅微型化,提高了可及性,而 21 世纪则带来了语音处理和电极技术的改进。这些进步使人工耳蜗超越了功能性设备的范畴,成为改变生活的工具,丰富了听觉体验和交流技能。本条目深入探讨了 CI 引人入胜的历史,重点介绍了一些关键日期,这些日期生动地描绘了所克服的挑战和所取得的显著进步。它探讨了决定植入式助听器发展的人物和重要时刻,这些人物和时刻最终将植入式助听器塑造成不可或缺的工具,不断重新定义听力辅助领域。
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引用次数: 0
Director Interlocks: Information Transfer in Board Networks 董事互锁:董事会网络中的信息传递
Pub Date : 2024-01-10 DOI: 10.3390/encyclopedia4010010
Ziqi Ma, Linna Shi, Katherine (Kexin) Yu, Nan Zhou
Director interlocks occur when a board member or an executive of a firm sits on the board of directors of another firm. As an essential social network application in the business world, interlocking directorates are documented to be non-trivial from the 1930s and continue to gain popularity thereafter. Corporate information and business practices can be transferred to another firm through an interlocking director sitting on both companies’ boards. Such information dissemination leads to changes in an interlocking firm’s decision-making processes. Existing business research attempts to decipher the underlying reasons why board interlocks become prevalent, how and what information is being transferred through this channel, and the intended or unintended consequences to firm strategic, governance, financing, and accounting practices. We first introduce theoretical research on board interlocks in management and then follow up with empirical evidence in finance and accounting. Since extant studies have not reached a consensus on various consequences of board interlocks, we contribute to the literature by summarizing the findings from multi-business disciplines, discussing their advantages and disadvantages, and calling for more research on the topic.
当一家公司的董事会成员或高管加入另一家公司的董事会时,就会出现董事互锁现象。作为商业世界中一种重要的社交网络应用,互锁董事制度从 20 世纪 30 年代开始就被记录在案,并在此后不断普及。公司信息和商业惯例可以通过同时在两家公司董事会任职的连锁董事传递到另一家公司。这种信息传播会导致连锁公司的决策过程发生变化。现有的商业研究试图揭示董事会互锁盛行的根本原因,通过这一渠道传递信息的方式和内容,以及对公司战略、治理、融资和会计实践产生的预期或意外后果。我们首先介绍了有关管理领域董事会互锁的理论研究,然后介绍了财务和会计领域的经验证据。由于现有研究尚未就董事会互锁的各种后果达成共识,我们总结了来自多个学科的研究结果,讨论了它们的优缺点,并呼吁对这一主题开展更多研究,从而为相关文献做出贡献。
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引用次数: 0
Graphene Nanocomposite Materials for Supercapacitor Electrodes 用于超级电容器电极的石墨烯纳米复合材料
Pub Date : 2024-01-05 DOI: 10.3390/encyclopedia4010009
Md. Ikram Ul Hoque, S. Donne, R. Holze
Graphene and related materials (graphene oxide, reduced graphene oxide) as a subclass of carbon materials and their composites have been examined in various functions as materials in supercapacitor electrodes. They have been suggested as active masses for electrodes in electrochemical double-layer capacitors, tested as conducting additives for redox-active materials showing only poor electronic conductivity, and their use as a coating of active materials for corrosion and dissolution protection has been suggested. They have also been examined as a corrosion-protection coating of metallic current collectors; paper-like materials prepared from them have been proposed as mechanical support and as a current collector of supercapacitor electrodes. This entry provides an overview with representative examples. It outlines advantages, challenges, and future directions.
石墨烯和相关材料(氧化石墨烯、还原氧化石墨烯)作为碳材料及其复合材料的一个子类,已作为超级电容器电极材料的各种功能进行了研究。有人建议将它们作为电化学双层电容器电极的活性物质,测试它们作为氧化还原活性材料的导电添加剂,但这些材料的电子导电性较差,还有人建议将它们用作活性材料的涂层,以防止腐蚀和溶解。此外,还将它们用作金属集流器的腐蚀保护涂层进行了研究;有人建议将用它们制备的纸状材料用作机械支撑和超级电容器电极的集流器。本条目通过具有代表性的实例进行了概述。它概述了优势、挑战和未来发展方向。
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引用次数: 0
Saprophytic Filamentous Fungi against Helminths Affecting Captive Wild Animals 针对影响圈养野生动物的蠕虫的营养丝状真菌
Pub Date : 2024-01-05 DOI: 10.3390/encyclopedia4010008
Rami Salmo, C. Viña, João Lozano, A. M. Palomero, José Ángel Hernández, R. Bonilla, R. Sánchez-Andrade, A. Paz-Silva, L. M. Madeira de Carvalho, M. Arias, C. Cazapal-Monteiro
In recent decades, important modifications have been introduced in zoos in order to guarantee the welfare of captive wild animals. Thus, many of these species are housed in enclosures with access to vegetation, where they can enjoy habitats close to those in their natural surroundings, interact with the environment, etc. These habitats present beneficial conditions for some species of parasites to survive and spread. This is a very similar problem to that affecting livestock, and the same solution, based on deworming, is currently being applied. However, the free-living stages of certain parasites that develop in the soil are responsible for high rates of ground contamination throughout the year, so that animals become infected soon after successful deworming, resulting in chemical parasiticides being frequently administered. Preventive measures are seldom considered, which worsens the situation. This entry summarizes the usefulness of the dissemination of certain saprophytic filamentous fungi with proven antagonism against some of the parasites.
近几十年来,为了保证圈养野生动物的福利,动物园进行了重大改革。因此,许多野生动物被饲养在可以接触植被的围栏中,它们可以享受接近自然环境的栖息地,与环境互动等。这些栖息地为某些寄生虫的生存和传播提供了有利条件。这个问题与影响牲畜的问题非常相似,目前采用的解决办法也是驱虫。然而,某些寄生虫在土壤中的自由生存阶段会导致全年地面污染率居高不下,因此动物在成功驱虫后很快就会受到感染,这就导致需要经常使用化学杀寄生虫剂。人们很少考虑采取预防措施,这使情况更加恶化。本条目总结了传播某些经证实对某些寄生虫具有拮抗作用的丝状真菌的作用。
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引用次数: 0
Bacteriocins and Bacteriophages as Dual Biological Players for Food Safety Applications 细菌素和噬菌体是食品安全应用中的双重生物角色
Pub Date : 2024-01-02 DOI: 10.3390/encyclopedia4010007
Nacim Barache, Y. Belguesmia, Beatriz Martinez, Bruce S. Seal, D. Drider
The development of new techniques for the control of pathogenic microorganisms during food production and for the prevention of spoilage are needed to reduce or replace chemical preservatives. This is due to the trend that consumers are increasingly questioning the use of chemical preservatives because of the many health concerns. Because of this issue, bacteriocins and bacteriophages are increasingly viewed as safe natural preservatives with a long history of various applications during food production and preservation. This minireview considers applications of these two antimicrobials, highlights their mode of action, lists their advantages and, when necessary, their limitations. It also reports recent advances in the use of bacteriophages and bacteriocins either alone or in combination in different food matrices. The incentives and effectiveness offered by these antimicrobials in the field of biopreservation are considered for future applications during food production and preservation.
在食品生产过程中,需要开发控制病原微生物和防止腐败的新技术,以减少或取代化学防腐剂。这是由于消费者对化学防腐剂的使用越来越有质疑的趋势,因为这涉及到许多健康问题。正因为如此,细菌素和噬菌体越来越被视为安全的天然防腐剂,在食品生产和保存过程中的各种应用由来已久。本微型综述探讨了这两种抗菌剂的应用,重点介绍了它们的作用模式,列举了它们的优点,并在必要时说明了它们的局限性。它还介绍了在不同食品基质中单独或联合使用噬菌体和细菌素的最新进展。还考虑了这些抗菌剂在生物保存领域的激励作用和有效性,以便今后在食品生产和保存过程中加以应用。
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引用次数: 0
Public School Choice Options in the United States 美国公立学校选择方案
Pub Date : 2023-12-31 DOI: 10.3390/encyclopedia4010006
Shelby L. Smith, Margaret Dawson-Amoah, Tong Tong, Nicolas Pardo, Elizabeth Ann Alonso-Morris, Adam Kho
Under the structure of compulsory education, students in the United States are required to attend school until at least 16 years of age, which can be done at a variety of educational institutions, both public and private. Amongst public schools, students are each assigned a neighborhood school but also frequently have the option to attend a choice school. While the purpose of neighborhood schools is to provide a guaranteed educational option that accommodates most students, choice schools serve varied purposes that accommodate specific learning styles and societal goals. Four types of publicly funded choice schools are magnet, charter, alternative, and virtual schools. While each was established to serve a specific societal goal, their purposes have shifted over time and have produced varied student outcomes, both academic and non-academic.
在义务教育结构下,美国学生必须上学到至少 16 岁,可以在公立和私立的各种教育机构就读。在公立学校中,学生每人都被分配到一所邻里学校,但也经常可以选择就读择校。邻里学校的目的是为大多数学生提供有保障的教育选择,而择校则有不同的目的,以适应特定的学习风格和社会目标。四种由政府资助的择校包括磁铁学校、特许学校、替代学校和虚拟学校。虽然每种学校的设立都是为了实现特定的社会目标,但随着时间的推移,它们的目的也发生了变化,并产生了不同的学生成果,包括学术成果和非学术成果。
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引用次数: 0
Understanding the Education Policymaking Process in the United States 了解美国的教育决策过程
Pub Date : 2023-12-30 DOI: 10.3390/encyclopedia4010005
Margaret Dawson-Amoah, Shelby L. Smith, Desiree O’Neal, Isabel Clay, Elizabeth Ann Alonso-Morris, Adam Kho
Considering the broad implications of education policy, it is important to understand the various facets of the education policymaking process. There are different stages of the process (i.e., issue definition, policy adoption, implementation, and evaluation) which, at times, can be difficult to comprehend when considering the competing goals of education and multiple stakeholders. Understanding the process can also be difficult due to the historical and contemporary influences of power and racism at play within and outside of society’s educational landscape—especially within the United States context. The process is highlighted as an iterative one which provides room for adjustments and changes across different contexts. By navigating the complex landscape of education policymaking, one can be better equipped to understand the intricacies of policymaking and its transformative capacity.
考虑到教育政策的广泛影响,了解教育政策制定过程的各个方面非常重要。这一过程分为不同的阶段(即问题定义、政策通过、实施和评估),考虑到相互竞争的教育目标和多个利益相关者,这些阶段有时可能难以理解。此外,由于权力和种族主义在社会教育领域内外--尤其是在美国--的历史和当代影响,理解这一过程也会很困难。我们强调这一过程是一个迭代的过程,为在不同背景下进行调整和变革提供了空间。通过驾驭复杂的教育决策环境,人们可以更好地理解错综复杂的决策及其变革能力。
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引用次数: 0
Biophysics and Quantum Limitation of Photoreceptive Processes 光敏过程的生物物理学和量子限制
Pub Date : 2023-12-25 DOI: 10.3390/encyclopedia4010003
L. Barsanti, P. Gualtieri
This entry paper is an attempt to explain how the discrete nature of light (energy discreteness in the form of photons) constrains the light detection process all along the evolutionary path, in the not-fully-understood photoreceptive systems of unicellular microorganisms (nonimaging systems) and in the complex and well-known visual system of higher organisms (imaging systems). All these systems are perfect examples of the interplay between physics and biology, i.e., they are the perfect topic of research for biophysicists. The paper describes how photoreceptive and visual systems achieve the goal of photon counting, which information is conveyed by a finite number of photons, and which noise factors limit light-detecting processes.
这篇入选论文试图解释光的离散性(光子形式的能量离散性)如何在进化过程中一直制约着单细胞微生物尚未完全理解的光感知系统(非成像系统)和高等生物众所周知的复杂视觉系统(成像系统)的光检测过程。所有这些系统都是物理学与生物学相互作用的完美范例,即它们是生物物理学家的最佳研究课题。本文介绍了光感和视觉系统如何实现光子计数的目标、有限数量的光子能传递哪些信息以及哪些噪声因素限制了光检测过程。
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引用次数: 0
Maxwell’s Early Unitary View of Electricity and Fluid Mechanics 麦克斯韦早期的电学和流体力学单元观点
Pub Date : 2023-12-22 DOI: 10.3390/encyclopedia4010002
Giulia Tripodi, Giuseppe Ruta
In young Maxwell’s eyes, electricity, magnetism and fluid mechanics present analogies that let the first be mathematically grasped in a unitary way similarly to the latter. This entry sketches the first steps of James Clerk Maxwell’s unitary view of electromagnetism and fluid mechanics, with long-lasting effects on understanding the physical world. In his very first paper on the subject, Maxwell interpreted Faraday’s concept of lines of force of both electricity and magnetism as filaments of a flowing fluid. That is, Maxwell suggested to unify the previously distinct fields of electricity and magnetism, considering them as different aspects of the same entity, the ‘electromagnetic field’, which is mathematically described by four partial differential equations. In the literature there are several comprehensive works on Maxwell’s mature exposition of his theory; however, the aim of this entry contribution is rather more limited. Indeed, it is restricted to examining the contributions of Maxwell’s first paper towards developing the idea of electric current as the motion of an incompressible fluid. Thus, this entry highlights the strong connections of Maxwell’s epistemological view with the ‘mechanistic’ approach of the time to every aspect of physical phenomenology. For this purpose, this entry mentions some historical context surrounding the emergence of Maxwell’s innovative concepts.
在年轻的麦克斯韦眼中,电学、磁学和流体力学之间存在着类比关系,前者可以用类似于后者的统一方式在数学上加以把握。这篇文章概述了詹姆斯-克拉克-麦克斯韦对电磁学和流体力学的统一观点的第一步,对理解物理世界产生了长远的影响。麦克斯韦在他关于这一主题的第一篇论文中,将法拉第关于电和磁的力线概念解释为流动液体的细丝。也就是说,麦克斯韦建议将以前截然不同的电场和磁场统一起来,将它们视为同一实体--"电磁场 "的不同方面,而 "电磁场 "在数学上可以用四个偏微分方程来描述。关于麦克斯韦对其理论的成熟阐述,文献中有多部全面的著作;然而,本论文的目的则较为有限。事实上,它仅限于研究麦克斯韦的第一篇论文对发展电流是不可压缩流体运动这一观点的贡献。因此,本条目强调了麦克斯韦的认识论观点与当时对物理现象学各个方面的 "机械论 "方法之间的紧密联系。为此,本条目提到了围绕麦克斯韦创新概念出现的一些历史背景。
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引用次数: 0
Plural Nature(s): An Overview of Their Sociocultural Construction 复数性质:社会文化构建概述
Pub Date : 2023-12-20 DOI: 10.3390/encyclopedia4010001
Fátima Alves, Diogo Guedes Vidal
The social construction of nature aims to emphasise that the concept of nature has multiple meanings that vary in different socio-cultural contexts. This underlines the multiple ways in which both structures and individuals understand, explain, and engage with nature and the environment. Consequently, nature and cultures/societies are not separate entities, but are intertwined in complex and interdependent relationships. Therefore, nature is the result of human perceptions and social practices. The way we interact with, perceive, interpret, and value nature is influenced by a given society’s history and sociocultural factors. This intimate relationship is closely linked to power–knowledge and influence relations. Those with more power can impose a particular vision of, and relationship with, nature, resulting in inequalities and potentially harmful relations that can explain the environmental degradation that the contemporary world faces globally, despite its expression in particular contexts, thus configuring plural natures.
自然的社会建构旨在强调自然的概念在不同的社会文化背景下具有不同的多重含义。这强调了结构和个人理解、解释和参与自然与环境的多种方式。因此,自然和文化/社会并不是相互独立的实体,而是交织在一起的复杂和相互依存的关系。因此,自然是人类认知和社会实践的结果。我们与自然互动、感知、解释和重视自然的方式受到特定社会的历史和社会文化因素的影响。这种密切关系与权力-知识和影响力关系密切相关。那些拥有更多权力的人可以对自然强加一种特定的看法以及与自然的关系,从而导致不平等和潜在的有害关系,这可以解释当代世界在全球范围内面临的环境退化问题,尽管这种退化表现在特定的环境中,从而形成了多元性质。
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