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While an understanding of electronic principles is vitally important for scientists and engineers working across many disciplines, the breadth of the subject can make it daunting. This textbook offers a concise and practical introduction to electronics, suitable for a one-semester undergraduate course as well as self-guided students. Beginning with the basics of general circuit laws and resistor circuits to ease students into the subject, the textbook then covers a wide range of topics, from passive circuits to semiconductor-based analog circuits and basic digital circuits. Exercises are provided at the end of each chapter, and answers to select questions are included at the end of the book. The complete solutions manual is available for instructors to download, together with eight laboratory exercises that parallel the text. Now in its second edition, the text has been updated and expanded with additional topic coverage and exercises.
Historical tensions over race and nation have bubbled over time and resurfaced again since the Brexit vote in the forms of increased racism and a “hostile environment.” British Muslim identity and belonging has been a complex process of negotiation in the British Isles and beyond. This chapter explores how transnational Muslim identities in Britain form digital interconnections and face disruptions in an increasingly securitized global architecture in which the digital serves as a place of contestation and surveillance. Through summary close readings from selected writings by Kamila Shamsie, Mohsin Hamid, Ayisha Malik, and Zaffar Kunial, this chapter emphasizes how Muslim writers translate the limits of a national English identity for migrant groups after Brexit through new representations of enclosed spaces such as gardens and parks.
In 1995, Thabo Mbeki’s keynote address at a G7 meeting, lauded by Tim Berners-Lee, underscored the Web’s potential to revolutionize global social and political landscapes, particularly emphasizing its significance for Africa. This chapter looks at the impact of digital technology on African literature. Using Chimamanda Adichie, Binyavanga Wainaina, and Brittle Paper as anchor points, it examines how digital technology and culture are reconstituting literary audiences, making space for the emergence of new knowledge domains and transforming the production infrastructures. It concludes that digital culture is the epistemic context in which twenty-first-century African literature exhibits some of its most defining characteristics.
Regardless of where you sit, digital is here to stay, and hiding from it won’t change that. Rather, understand it, learn, and accept the benefits and risks as inseparable entities. By understanding digital, we may just understand our patient a little more too. Stepping beyond the patient, and looking at it from a clinical perspective, the world of digital and its application to healthcare has so much more to offer. For mental health services in particular, there is a wide range of digital opportunities to support teams to work differently. This can range from apps, chatbots, online assessments, monitoring and therapies, virtual reality, virtual administration, electronic prescribing and much more. Obviously, it is paramount we consider issues such as safeguarding, cybersecurity and privacy, but the genie is out of the bottle and digital is here to stay!
This paper presents two distinct configurations of a GaN-based digital transceiver (TRx) to evaluate their performance and integration efficiency. The first configuration, features a novel low-noise amplifier with integrated switching capability (LNAiS) and a digital class-E power amplifier (PA) on a single compact chip. The LNAiS eliminates the need for an external antenna switch, reducing module complexity and chip size while maintaining high performance. It achieves a gain of 12.7 dB and a noise figure of 3 dB at 4.7 GHz in Rx mode and provides over 20 dB isolation in Tx mode across 4.7–7.4 GHz. The digital PA demonstrates flexibility and efficiency, achieving 46% and 23% efficiencies for 20 MHz LTE and OFDM signals, respectively, and 22% for a 240 MHz OFDM signal with 10 dB PAPR. The second configuration integrates the same concept of digital PA with a standard LNA and an SPDT switch (LNAsS), achieving a gain of 24.8 dB and a noise figure of 2.65 dB at 4.2 GHz. This work highlights the trade-offs between these two architectures and demonstrates that the LNAiS-based approach drives the development of greener, more flexible, compact,lower-complexity, and cost-effective transceivers for 5G networks.
The National Institutes of Health (NIH) Executive Abilities: Measures and Instruments for Neurobehavioral Evaluation and Research (EXAMINER) is a validated laptop-based battery of executive functioning tests. A modified tablet version of the EXAMINER was developed on the UCSF Tablet-based Cognitive Assessment Tool (TabCAT-EXAMINER). Here we describe the battery and investigate the reliability and validity of a composite score.
Methods:
A diagnostically heterogeneous sample of 2135 individuals (mean age = 65.58, SD = 16.07), including controls and participants with a variety of neurodegenerative syndromes, completed the TabCAT-EXAMINER. A composite score was developed using confirmatory factor analysis and item response theory. Validity was evaluated via linear regressions that tested associations with neuropsychological tests, demographics, clinical diagnosis, and disease severity. Replicability of cross-sectional results was tested in a separate sample of participants (n = 342) recruited from a frontotemporal dementia study. As this separate sample also collected longitudinal TabCAT-EXAMINER measures, we additionally assessed test-retest reliability and associations between baseline disease severity and changes in TabCAT-EXAMINER scores.
Results:
The TabCAT-EXAMINER score was normally distributed, demonstrated high test-retest reliability, and was associated in the expected directions with independent tests of executive functioning, demographics, disease severity, and diagnosis. Greater baseline disease severity was associated with more rapid longitudinal TabCAT-EXAMINER decline.
Conclusions:
The TabCAT-EXAMINER is a tablet-based executive functioning battery developed for observational research and clinical trials. Performance can be summarized as a single composite score, and results of this study support its reliability and validity in cognitive aging and neurodegenerative disease cohorts.
The internet has expanded access to the works of Michael Field by making them freely available in digital form. This chapter explains how digital editions differ from print editions and raises questions about whether we should consider them as the same text or not. It identifies the basic types of digital editions, describes how the process of creating them can introduce changes into the text, and discusses how minor textual changes can affect how we interpret what we read. Two common options for encoding digital texts are introduced, and we consider the promise of textual encoding to enmesh the text within the ‘semantic web’.
Heated online communication reveals global challenges in the digital age, often fuelled by collective outrage. This article investigates how Buddhist network perspectives, paralleling digital reality, can inform mental health. Avatamsaka philosophy provides practical ways to navigate web complexities, suggesting that individual actions ripple across society. Recognising our interdependence and the impermanence of social responses deepens understanding of communication’s broader impact and dynamic interconnected worldviews. These perspectives support relational balance and cognitive flexibility, essential for alleviating online distress and conflicts, including acceptance of present circumstances and fostering motivation for positive change. Valuing connectedness while respecting individuality helps cultivate resilience, enriching therapeutic practices.
To assess the nutritional quality of foods and beverages (F&B) advertised to adolescents and analyse marketing techniques and persuasive appeals used by celebrities and influencers on Instagram.
Design:
A content analysis study was conducted using the WHO’s CLICK Monitoring Framework and Nutrient Profile Model.
Setting:
Instagram, a popular social media platform among adolescents with frequent F&B advertisements by celebrities and influencers.
Participants:
The top forty-eight Instagram accounts of celebrities and influencers posting F&B advertisements were selected based on follower count and engagement metrics. Nutrient profiling of advertised F&B (n 344) and content analysis of posts featuring F&B (n 326) between January 2021 and May 2023 were performed. Data collected included characteristics of celebrities and influencers, marketing techniques, online engagement and persuasive appeals in the posts.
Results:
Carbonated beverages and flavored waters (28·5 %), energy drinks (20·6 %) and ready-made foods (15·4 %) were most frequently advertised, with the majority (89·2 %) of products not permitted for advertisement to adolescents, according to WHO. Common marketing techniques included tagging brand (96·9 %) and using brand logo (94·2 %). The most frequently used persuasive appeals were taste (20·9 %), energy (10·7 %), link to sports events (10·7 %), new product (9·5 %) and fun (7·4 %).
Conclusion:
Most F&B advertised on Instagram by celebrities and influencers are prohibited from being advertised to adolescents by the WHO. This highlights the need for stricter regulation of user-generated content and for users and parents to be better educated about persuasive techniques used on social media to make them less vulnerable to the influence of marketing.
The twentieth century was a period of radical transformation in the materials, resources and technologies available for music. Pierre Boulez was at the forefront of these developments, yet at the same time he displayed a curious ambivalence towards them. This chapter shows how, as a powerful cultural figure committed to the project of modernity, Boulez embraced the technologies of the new age, particularly through his guiding of the programme of activities undertaken at the music/scientific research centre IRCAM, which he helped to found in Paris in the 1970s. It also shows how, in his own compositional work, he displayed an ambivalent and musically conservative attitude towards new technological developments, leaving the details to others, while maintaining a quite traditional view of musical composition and performance. The chapter explores the conceptual, historical and cultural contexts for Boulez’s engagement with technology, and examines some of the works he composed using the technological resources developed at IRCAM.
Recent disruptions in technology, geopolitics, and the environment have contested what it means to be human, a source of social and political anxiety about the future. Taking inspiration from African and African diaspora writers and scholars, Lee attends to theories of the human that emerge from contemporary experiences on the African continent. The essay provides a countercanon by centering debates about the human and their attendant attempts to transcend it (more-than-human, posthuman) in African experiences and knowledges. Doing so offers alternative conceptions of human–nonhuman relations that unravel the co-imbrication of colonialism, capitalism, and anti-Black racism that undergird the modern condition.
From its origins in ancient Mesopotamia, through the advent of coinage in ancient Greece and Rome and the invention of paper currency in medieval China, the progress of finance and money has been driven by technological developments. The great technological change of our age in relation to money centres on the creation of digital money and digital payment systems. Money in Crisis explains what the digital revolution in money is, why it matters and how its potential benefits can be realized or undermined. It explores the history, theory and evolving technologies underlying money and warns us that money is in crisis: under threat from inflation, financial instability, and digital wizardry. It discusses how modern forms of digital money (crypto, central bank digital currencies) fit into monetary history and explains the benefits and risks of recent innovations from an economic, political, social and cultural viewpoint.
This chapter considers the promises and potential pitfalls of the digital era for Latino/a/@/x/e literature. It begins with an exploration of the multiple iterations of the virtual project/website El Puerto Rican Embassy over the last twenty-nine years as a way to think with evolving attitudes about Puerto Rican nationalism and its relationship to Nuyorican identity. The conversation then shifts to think about the potential dangers of relying on digital archives as safe repositories for Latino/a/@/x/e history. After all, with these new forms of digital power, come new responsibilities, including the need for a steady stream of resources. As exciting as the possibilities for redefining Latin@s online may be, the precarity that Adela Vázquez, Jaime Cortez, and Pato Hebert’s queer, Cuban comic Sexile (2004) currently faces makes clear that the expectation that cyberspace serve as a catchall for the margins may foster a false sense of security that risks reproducing new forms of digital exile.
A new economic model begins to emerge. After the turn of the century, the worldview made of free markets, globalization, and liberal democracy met multiple crises. While the political pendulum swings back toward government control, economists and independent agencies should promote balance, mitigating the tendency toward the extremes of public opinions divided into opposite camps. The tendency toward a stronger presence of the government in the economy must be controlled; the perimeter of open and competitive markets should not be restricted to the point at which they lose their creative force. In this book we reflect on these developments through the prism of one of the most ancient and fundamental societal institutions: money. Money is a mirror of society; it reveals the drivers, contradictions, strengths, weaknesses, and failures of society at large. We build on two convictions. The first is the value of history, to tell us what money is, what purpose should it serve, and how best it should be designed and governed. The second is that the fundamental purpose and requirements of money do not change through time or space. What changes are the manifestations of money. Technology is part of this process and should be used to serve money’s purposes better.
In this Comment, I reflect on my personal experience in doing research at institutional archives as an early career historian. I discuss how my research has been shaped by encounters with physical and digital sources across Singapore, Malaysia, Hong Kong SAR and the United Kingdom. In doing so, I draw on the concept of ‘interim archives’ to emphasise the partial nature of primary sources in institutional archives, and the necessity for research to be multi-archival due not only to the realities of access, but also the need to incorporate diverse perspectives.
Scale has been the central promise of the digital turn. The creation of corpora such as EEBO and EEBO-TCP have eased the logistics of access to primary sources for scholars of Shakespeare and early English literature and culture and fundamentally altered the ways in which we retrieve, read, think about, and analyze texts. However, the large-scale curation of historical corpora poses unique challenges and requires scholarly insight and significant algorithmic intervention. In sections on 'Text,' 'Corpus,' 'Search,' and 'Discovery,' this Element problematizes the specific affordances of computation and scale as primary conceptual categories rather than incidental artifacts of digitization. From text-encoding and search to corpus-scale data visualization and machine-learning, it discusses a range of computational techniques that can facilitate corpus curation and enable exploratory, experimental modes of discovery that not only serve as tools to ease access but accommodate and respond to the demands of humanistic inquiry.
This chapter offers an overview of the arguments and key contributions of the book. The book has shown that while clientelism and resource constraints have rationed the provision of public goods and social benefits, across the past century, Indians have engaged in deliberate debates about what an Indian ‘welfare state’ should look like. The ideas and principles on which earlier policies were conceived have remained influential. India’s welfare regime today is shaped by decisions taken and resources allocated in the past. Even moments of expected rupture such as the onset of economic reforms in 1991 - or, as this chapter goes on to show, the 2014 Lok Sabha elections which brought the Narendra Modi-led BJP to power on a platform promising an end to a culture of ‘entitlements’ - have seen underlying stability in the context of India’s welfare regime. This said, there have been substantial areas of divergence over time in both the approach to social policy implementation and the philosophy of citizenship that underpins welfare commitments. The chapter ends by looking ahead to the future of welfare, underlining the continued significance of state-level policy innovation.
The humanities cannot go public without publishing. In this contribution to the Manifesto issue of Public Humanities, Daniel Fisher-Livne, Kath Burton, and Catherine Cocks highlight the radically inclusive publishing practices necessary to support the Public Humanities ecosystem. The authors explain how Publishing and the Publicly Engaged Humanities Working Group activities have prepared the ground for future growth, directing attention to the inherently collaborative, multimodal and values-based publishing practices of engaged scholars. This paper builds on the central thesis of the Working Group, calling for the implementation of a radically inclusive ecology of publishing practices that embody and nurture the unique facets, connections and aims of publicly engaged publications.
Law enforcement institutions in India are undergoing fundamental media technological transformations, integrating digital media technologies into crime investigation, documentation, and presentation methods. This article seeks to understand these transformations by examining the curious case of 65-B certificates, a mandatory paper document that gatekeeps and governs the life of new media objects as evidence in the Indian legal system. In exploring the tensions that arise when bureaucratic institutions change their means of information production, the article reflects on the continued stubborn presence of paper at this transformative juncture in the life of legal institutions. By studying the role of paper in bureaucratic practices, analyzing jurisprudential debates and case law surrounding 65-B certificates, and thinking through some scattered ethnographic encounters around these certificates involving police officers, forensic scientists, and practicing lawyers, this article argues that despite ongoing digital transformations, law essentially remains a technology of paper.