In the civil versus uncivil comparison, the group treated with uncivil discourse and the “baseline” group exposed to civil discourse watch a debate between political candidates. In this case, the average treatment effect (ATE) represents the average effect of exposure to debates with different levels of civility. Comparing the untreated control group to the treatment group exposed to uncivil dialogue, on the other hand, captures both the effect of watching a political debate (regardless of civility) and the effect of uncivil discourse.

Before conducting an experiment with human subjects, researchers much consider a number of important ethical and regulatory constraints. This chapter reviews the leading ethical concerns that arise in the context of human subjects research in general and experimental research in particular. These ethical concerns have also set in motion regulations, such as The Common Rule, that researchers must follow before launching a study. The chapter concludes by discussing other professional norms, such as research transparency.

The field of quantum research is currently undergoing a revolution. A variety of tools and platforms for controlling individual quantum particles have emerged, which can be utilized to develop entirely new technologies for computation, communication, and sensing. In particular, these technologies will enable applications of quantum information science that can fundamentally change the way we store, process, and transmit information. Exciting theoretical predictions exist for quantum computers, with some proof-of-principle experiments, to perform calculations that would overwhelm the world’s best conventional supercomputers. Quantum research is rapidly developing, and the race is intensifying for quantum technology development, involving some of the high-tech giants. In this chapter we will introduce some key concepts in the materials and devices behind these technological developments. Becoming familiar with these concepts in this first chapter should provide the reader with concrete goals and motivations for studying the quantum methods and tools described in subsequent chapters.

The phonemic inventory of Biblical Aramaic consonants is given in Table 5.

Quantum mechanics is currently the most fundamental theory in use in many disciplines of science and engineering. It is particularly important when one is dealing with nanoscale and atomic-scale systems. However, many phenomena and properties that occur at atomic scales are strange and nonintuitive. There are a number of concepts that simply do not exist in the macroscopic world where we live. Wave–particle duality is one of them. In this chapter, we examine how and when classical particles start behaving as quantum mechanical waves, derive the most important wave equation that quantum particles obey, Schrödinger’s equation, and solve it for the elementary problems of electron waves in given potential energy landscapes. We will also learn how to calculate the expectation values of observables when the wavefunction is known. Schrödinger’s equation will be extensively used throughout the rest of this textbook. More complicated potential energy problems, particularly those relevant to materials and devices, will be dealt with in Chapters 5 and 7, building upon the formulations developed in this chapter.

Verbs have different properties that affect number and nature of the complements that it has, namely, valence, voice, and Aktionsart.

The purpose of this chapter is to give readers a feel for how experiments are designed, implemented, and analyzed. The chapter walks through the steps of designing a small, inexpensive experiment that can be conducted at home. We will also discuss the fine points of implementing an experiment, assembling a dataset, and preparing a statistical analysis. In order to put aside ethical and procedural issues that apply to experiments involving human participants, this chapter confines its attention to product testing. Drawing inspiration from the first field experiments conducted a century ago, my running example will test the effects of fertilizer on plant growth.] As I design and implement my experiment, I call attention to small but consequential decisions aimed at preventing violations of core assumptions. The final section of the chapter describes some illustrative experiments conducted by students, and the exercises provide their data so that you can retrace their steps.

Verbs in Aramaic can express different semantic features morphologically and syntactically. The inflectional system (the finite conjugations, and the non-finite forms) signifies the features of tense, aspect, and mood.

The band theory of solids provides a general framework with which to understand properties of materials. It not only explains the fundamental differences in electronic structure between insulators, semiconductors, and metals but also provides guidelines for finding optimum materials for specific device applications. For example, a semiconductor with a light effective mass is suited for high-electron-mobility transistors (HEMTs) because the mobility ${\mu }_{\mathrm{e}}$ is inversely proportional to the effective mass, ${\mu }_{\mathrm{e}}=e\tau /m^{*}$, where τ is the scattering time. For developing LEDs and laser diodes, a direct band gap material – i.e., a material in which the conduction-band bottom and the valence-band top occur at the same k – is necessary for momentum conservation since the momentum of photons is negligibly small compared with crystal momenta. In this chapter, after reviewing the basic concepts of atomic and molecular orbitals, bonds and bands, crystal lattices and reciprocal lattices, we provide an overview of the band structure of technologically important materials, including both traditional and emerging materials.

Derivational verbal bases, like those of nouns and adjectives, are built by combining the root morpheme (usually of three consonants) with a pattern of vowels and other modifications. The root + pattern base in verbs is organized into a group of verbal stems, which form a syntactic–semantic system. Various default settings of valence (§323), voice (§325), and Aktionsart (§328) are assigned to particular stems, although these settings can be neutralized or set aside in particular cases.

The linking of a main clause to a second, dependent clause which modifies the main clause adverbially is subordination. The linking is usually marked by a subordinating conjunction, although in some cases a coordinating conjunction is used, and the subordination is semantic rather than syntactic.

Nouns and noun phrases are used in clause roles such as subject, object, prepositional complement, nominal predicate, or (sometimes) adverbials.