scholarly journals Combining Ad Hoc Text Mining and Descriptive Analytics to Investigate Public EV Charging Prices in the United States

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5240
Author(s):  
David Trinko ◽  
Emily Porter ◽  
Jamie Dunckley ◽  
Thomas Bradley ◽  
Timothy Coburn

Electric vehicle (EV) charging infrastructure is present all over the United States, but charging prices vary greatly, both in amount and in the methods by which they are assessed. For this paper, we interpret and analyze charging price information from PlugShare, a crowd-sourced EV charging data platform. Because prices in these data exist in a semi-structured textual format, an ad hoc text mining approach is used to extract quantitative price information. Descriptive analytics of the processed dataset demonstrate how the prices of EV charging vary with charging level (Direct Current Fast Charging versus Level 2), geographic location, network provider, and location type. Our research indicates that a great deal of diversity and flexibility exists in structuring the prices of EV charging to enable incentives for shaping charging behaviors, but that it has yet to be widely standardized or utilized. Comparisons with estimates of the levelized cost of EV charging illustrate some of the challenges associated with operating and using these stations.

2021 ◽  
Author(s):  
Leah Lazer ◽  
Sadanand Wachche ◽  
Ryan Sclar ◽  
Sarah Cassius

Efforts to reduce transportation emissions through electrification can accelerate their impact by focusing on intensively used vehicles. Vehicles driven on ride-hailing platforms such as Uber and Lyft are intensively used, and their distinct charging patterns can support the development of essential electric vehicle (EV) charging infrastructure. However, vehicles used for ride-hailing are often missed by actions to electrify other intensively used vehicles, and an array of disparately available financial incentives, EV models, and charging options produce a complicated landscape where it is often unclear whether an EV costs more or less than an internal combustion engine (ICE) vehicle or is suitable for ride-hailing. As a result, in U.S., European, and Canadian cities, the share of EVs among vehicles used for ride-hailing is often lower than or similar to the share of EVs in the overall vehicle stock. This paper identifies the largest barriers that prevent ride-hailing drivers from accessing EVs and analyzes ways that governments, industry and other stakeholders can tackle those barriers. It includes city scorecards that evaluate 10 U.S., European and Canadian cities on their progress towards dismantling these barriers, using an original methodology and data from Uber.


2021 ◽  
pp. 1-29
Author(s):  
Smita Ghosh ◽  
Mary Hoopes

Drawing upon an analysis of congressional records and media coverage from 1981 to 1996, this article examines the growth of mass immigration detention. It traces an important shift during this period: while detention began as an ad hoc executive initiative that was received with skepticism by the legislature, Congress was ultimately responsible for entrenching the system over objections from the agency. As we reveal, a critical component of this evolution was a transformation in Congress’s perception of asylum seekers. While lawmakers initially decried their detention, they later branded them as dangerous. Lawmakers began describing asylum seekers as criminals or agents of infectious diseases in order to justify their detention, which then cleared the way for the mass detention of arriving migrants more broadly. Our analysis suggests that they may have emphasized the dangerousness of asylum seekers to resolve the dissonance between their theoretical commitments to asylum and their hesitance to welcome newcomers. In addition to this distinctive form of cognitive dissonance, we discuss a number of other implications of our research, including the ways in which the new penology framework figured into the changing discourse about detaining asylum seekers.


PEDIATRICS ◽  
1996 ◽  
Vol 97 (2) ◽  
pp. 166-173 ◽  
Author(s):  
Gregory B. Rodgers

Objective. To describe and evaluate the helmet use patterns of children younger than 15 years of age in the United States. Methods. A national telephone survey of bicycle riders was conducted by means of the Mitofsky-Waksberg method of random-digit dialing, a survey method intended to give all telephone numbers in the continental United States an equal probability of selection. Based on information collected in the survey, a logistic regression model was used to determine and quantify the factors associated with helmet use. Results. Information was collected on the bicycle and helmet use patterns of a national sample of 399 children younger than 15 years of age who rode bicycles during the year preceding the survey. This sample projects to the approximately 26.4 million children who are estimated to have ridden bicycles in 1991. About 26% of all child riders owned or had the use of bicycle helmets, and about 15% were reported to have used their helmets all or more than half of the time when riding. Information is provided on the reasons the children did or did not wear helmets. The logistic regression analysis shows that helmet use by children is systematically related to their personal characteristics (eg, age and whether they had previously had bicycle-related accidents requiring medical attention), riding patterns (eg, riding surface), and household demographic characteristics (eg, geographic location and whether household members had attended college). Conclusions. Helmet use rates among children remain low. Less than one fifth of the children who rode bicycles wore helmets all or more than half of the time in 1991. However, based on comparisons with earlier studies, the results of the analysis suggest that helmet use rates have been rising.


1994 ◽  
Vol 37 (5) ◽  
Author(s):  
A. M. DzIewonski

The origins of the Federation of Digital Seismograph Networks (FDSN) can be traced to the summer of 1984. At that time, GEOSCOPE - the French global network of broadband instruments - was already well under way, and in the United States, the Incorporated Research Institutions for Seismology (IRIS) had just published its Science Plan for Global Seismographic Network (GSN). There was clearly an opportunity and the need to involve scientists from other countries in planning for the future of global seismology. An ad hoc meeting of some ten West European seismologists had been arranged in August during the annual meeting of the European Geophysical Society in Louvain. This may be considered to signify the beginning of widescale international cooperation, even though this particular group eventually became the nucleus of ORFEUS (Observatories and Research Facilities for EUropean Seismology). Rather than taking an active role in deployment of new stations, it chose to focus on the issue of providing the service for data collection and exchange, with an important mission of developing the requisite software.


Author(s):  
David P. Auerswald ◽  
Stephen M. Saideman

This chapter focuses primarily on two presidential systems, those of the United States and France. In each country, an individual is empowered to make significant military decisions or delegate those decisions to subordinates. There are two particular elements that distinguish how the Americans ran their war compared to many of the other countries: agent selection and incentives. Because the United States led an ad hoc effort (Operation Enduring Freedom) and only later became the leader of the NATO effort, the primary means of control was leadership selection and termination. The chapter then turns to the French case, where there is a significant change in behavior on the ground that followed the presidential transition from Jacques Chirac to Nicolas Sarkozy. Chirac placed significant restrictions on where the French were deployed and with what capabilities. Sarkozy lifted those restrictions but still answered the phone when questions arose in the field. The chapter also briefly addresses the case of Poland.


Author(s):  
Sean L. Malloy

This chapter looks at how the Black Power pioneers of the early 1960s discovered that relations between minority groups in the United States and the foreign governments or international organizations to which they appealed were seldom conducted on equal terms. While the mushrooming growth of the Black Panther Party (BPP) as a national organization in 1968 gave the party more leverage than Malcolm X or Williams had enjoyed as individuals, the Panthers still interacted with their potential state-level partners as supplicants rather than as equals. The ad hoc, person-to-person diplomacy that formed the foundation of these relationships often revealed ideological schisms both within the party and between the BPP and its potential allies.


2020 ◽  
pp. 371-388
Author(s):  
George Rutherglen

This chapter examines what the presumption against extraterritoriality means and how it operates. The presumption against extraterritoriality itself presumes a set of complicated rules about which features of a transnational case count: which features make a case territorial and within the scope of a federal statute because these features can be located within the United States or, if they cannot, make the case extraterritorial and outside the statute’s scope. The dependence of the presumption upon a network of other rules both complicates its operation and makes it a less than certain guide to statutory interpretation. The chapter then considers the justification for territorial allocation of government power generally, and addresses the question of whether any presumption about the territorial scope of statutes must await a new consensus on the appropriate rules of choice of law. It argues that the presumption against extraterritoriality requires a flexible interpretation that makes it more of a principle than a rule. From that premise, the chapter studies the choice between an ad hoc and a principled application of the presumption, both of which are exemplified in recent decisions.


Author(s):  
Craig L. Symonds

‘An ad hoc navy: the Revolutionary War (1775–1783)’ describes the Patriots’ response to the British Royal Navy strongholds in Boston and New York and the role of armed vessels during the Revolutionary War. It begins with George Washington’s attempts to threaten the British supply line using boats. The Continental Navy was founded on October 13, 1775, but the new program could hardly challenge the Royal Navy. With the exception of John Paul Jones, the Continental Navy proved mostly disappointing. The United States won its independence largely because the determination of the Patriot forces outlasted the British willingness to fight—and to pay for—a war three thousand miles away.


Author(s):  
Rubins Noah ◽  
Papanastasiou Thomas-Nektarios ◽  
Kinsella N Stephan

This chapter discusses the actions that States may take to obtain redress against other States at whose hands their citizens are mistreated. Where no investment treaty binds home and host States, and where no other instrument offers the jurisdictional foundation for investor–State arbitration, a foreign investor may have no other remedy but to appeal to his government for assistance. A State’s intervention on behalf of its citizens may take several forms, ranging from informal diplomatic discussions to formal adversarial proceedings before ad hoc or standing international tribunals. The remainder of the chapter covers the “espousal” of claims, claims before international tribunals, economic sanctions, invalidation of title, prohibitions against the use of force, and the Foreign Claims Settlement Act of the United States.


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