A theory of multihoming in rideshare competition

We examine competition among ridesharing platforms, where firms compete on both price and the wait time induced with idled drivers. We show that when consumers are the only agents who multihome, idleness is lower in duopoly than when consumers face a monopoly ridesharing platform. When drivers and consumers multihome, idleness further falls to zero as it involves costs for each platform that are appropriated, in part, by their rival. Interestingly, socially superior outcomes may involve monopoly or competition under various multihoming regimes, depending on the density of the city, and the relative costs of idleness versus consumer disutility of waiting.     

Cost-effectiveness of axicabtagene ciloleucel for adult patients with relapsed or refractory large B-cell lymphoma in the United States

Abstract

Purpose: Axicabtagene ciloleucel (axi-cel) was recently approved for treatment of relapsed or refractory (R/R) large B-cell lymphoma (LBCL) following two or more prior therapies. As the first CAR T-cell therapy available for adults in the US, there are important questions about clinical and economic value. The objective of this study was to assess the cost-effectiveness of axi-cel compared to salvage chemotherapy using a decision model and a US payer perspective.

Materials and methods: A decision model was developed to estimate life years (LYs), quality-adjusted life years (QALYs), and lifetime cost for adult patients with R/R LBCL treated with axi-cel vs salvage chemotherapy (R-DHAP). Patient-level analyses of the ZUMA-1 and SCHOLAR-1 studies were used to inform the model and to estimate the proportion achieving long-term survival. Drug and procedure costs were derived from US average sales prices and Medicare reimbursement schedules. Future healthcare costs in long-term remission was derived from per capita Medicare spending. Utility values were derived from patient-level data from ZUMA-1 and external literature. One-way and probabilistic sensitivity analyses evaluated uncertainty. Outcomes were calculated over a lifetime horizon and were discounted at 3% per year.

Results: In the base case, LYs, QALYs, and lifetime costs were 9.5, 7.7, and $552,921 for axi-cel vs 2.6, 1.1, and $172,737 for salvage chemotherapy, respectively. The axi-cel cost per QALY gained was $58,146. Cost-effectiveness was most sensitive to the fraction achieving long-term remission, discount rate, and axi-cel price. The likelihood that axi-cel is cost-effective was 95% at a willingness to pay of $100,000 per QALY.

Conclusion: Axi-cel is a potentially cost-effective alternative to salvage chemotherapy for adults with R/R LBCL. Long-term follow-up is necessary to reduce uncertainties about health outcomes.     

From Geo to Neo: A Speculative Inquiry into the Unusual “Geo-Ethnic” Roots of Neoconservatism in US Foreign Policy

There has been much controversy over the role that ethnic diasporas (sometimes called “lobbies”) do or should play in shaping American foreign policy. This article looks at one particular ethnic group, American Jews, with a view to assessing the claim made by some authors, to the effect that “neoconservatism” has been influenced considerably by Judaism. The article mostly debunks that claim, at least if the suggestion is that something about Judaism as a religion can help account for the policy agendas espoused by neoconservatives in recent years. However, the authors do argue that a “geo-ethnic” link can be established between a Jewish diaspora in America and the evolution of neoconservatism. Their claim is that a “borderlands” tradition emanating originally on the Russian frontier in the latter part of the nineteenth century was exported to America, through the migration of peoples they refer to as “new borderers.” This folk community, the authors argue, coalesced with another, well-established, folk community of “borderers” (the Scotch-Irish), resulting in the formation of the coalition known in recent years as neoconservatism – a coalition representing a fusion of Jacksonianism and Wilsonianism.     

Does Antitrust Enforcement in High Tech Markets Benefit Consumers? Stock Price Evidence from FTC v. Intel

Antitrust enforcement efforts in the United States and abroad have been ramped up in high-tech industries, which has rekindled older and largely unresolved debates concerning the appropriate role of antitrust enforcement in high-tech markets. This paper evaluates the likely competitive effects of Intel’s conduct through two approaches: The conventional approach focuses on traditional antitrust metrics in product markets: prices and output. The second, alternative approach involves turning to financial markets for valuable information. Under either approach, the available data do not support the theory that Intel’s behavior harmed consumers.     

Corporate financing decisions when investors take the path of least resistance

We argue that inertial behavior on the part of investors can have significant consequences for corporate financial policy. One implication of investor inertia is that it improves the terms for the acquiring firm in a stock-for-stock merger, because acquirer shares are placed in the hands of investors, who, independent of their beliefs, do not resell these shares on the open market. In the presence of a downward-sloping demand curve, this leads to a reduction in price pressure and, hence, to cheaper equity financing. We develop a simple model to illustrate this idea and present supporting empirical evidence.     

Controlled Openness and Foreign Direct Investment

The paper investigates why a developing country may adopt a partial reform. A country is considered where the ruling elite (referred to as state capital) prevents the entry of foreign capital, and taxes the private sector before reform. A higher productivity of foreign capital always increases the attractiveness of a partial reform under which state capital can control the inflow of foreign capital, but can reduce the attractiveness of a full reform under which the entry of foreign capital is unregulated. Hence, state capital's control over foreign capital may be a necessary condition for the reform to take place at all.     

China’s Growth,Stability, and Use of International Reserves

Since the onset of the global financial crisis, China and the U.S. have reduced their current-account imbalances as a share of GDP to less than half their pre-crisis levels. For China, the reduction in its current-account surplus post-crisis suggests a structural change. Panel regressions for a sample of almost 100 countries over 1983–2013 confirm that the relationship between current-account balances and economic variables changed in important ways after the financial crisis. China’s rebalancing has been accompanied by a decline in its reserves-to-GDP ratio and greater outward FDI that, in turn, has mitigated reserve hoarding.     

Type-2 TOPSIS: A Group Decision Problem When Ideal Values are not Extreme Endpoints

In the traditional TOPSIS, the ideal solutions are assumed to be located at the endpoints of the data interval. However, not all performance attributes possess ideal values at the endpoints. We termed performance attributes that have ideal values at extreme points as Type-1 attributes. Type-2 attributes however possess ideal values somewhere within the data interval instead of being at the extreme end points. This provides a preference ranking problem when all attributes are computed and assumed to be of the Type-1 nature. To overcome this issue, we propose a new Fuzzy DEA method for computing the ideal values and distance function of Type-2 attributes in a TOPSIS methodology. Our method allows Type-1 and Type-2 attributes to be included in an evaluation system without compromising the ranking quality. The efficacy of the proposed model is illustrated with a vendor evaluation case for a high-tech investment decision making exercise. A comparison analysis with the traditional TOPSIS is also presented.