Bandwidth and SIMDUCE as simulator fidelity criteria

The potential application of two concepts from the new Handling Qualities Specification for Military Rotorcraft was discussed. The first concept is bandwidth, a measure of the dynamic response to control. The second is a qualitative technique developed for assessing the visual cue environment the pilot has in bad weather and at night. Simulated Day Usable Cue Environment (SIMDUCE) applies this concept to assessing the day cuing fidelity in the simulator

Laurel, Mississippi: A Historical Perspective.

Laurel, Mississippi, exemplifies the new southern development that occurred in the years following Reconstruction. Coinciding with continental rail building and the depletion of northern timber resources, Laurel emerged as one of Mississippi\u27s great industrial centers. Laurel\u27s survival after the early twentieth century timber boom predicated itself on the diversification of its industry coupled with the continued growth of its infrastructure. Although Laurel\u27s industrial ascension is not unique in the annals of southern history, its duality regarding northern capitalistic impulses and southern labor and material serves as a successful industrial model in the era of cut out and get out sawmill and timber operations. Along with primary resources this study employs secondary source material to place Laurel, Mississippi in the scope of southern historiography. In addition to contextualizing Laurel\u27s place in southern history, this essay also serves to highlight Laurel\u27s social and economic development after the arrival of its northern benefactors

Appeals for “One Million Belgian Children”: Understanding the Success of the Commission for Relief in Belgium through the Mudd Family Papers

In response to the German occupation of Belgium in World War I, future U.S. president Herbert Hoover and a handful of his colleagues in the mining engineer industry founded the Commission for Relief in Belgium (CRB). The CRB engineered one of the greatest relief movements in history partly on account of its successful public appeals; nevertheless, the success of these appeals has never been fully explained due to a remarkable dearth of scholarship on the topic. This paper seeks to fill in the gap by analyzing salient documents in the Mudd Family Papers, located in Honnold/Mudd Library’s Special Collections section. The artifacts ultimately evince that the CRB tailored its appeals to the American upper and middle classes, appropriating their respective motifs and lexicons to successfully mobilize both groups; that rumors of wartime atrocities against Belgian children augmented its appeals to the middle class; and that it issued targeted messages to its American supporters after the United States’ entry into World War I, maintaining vital public support. The findings of this paper promise to add invaluable knowledge to an exceedingly understudied historical subject

Work, Life, And Community College Faculty: Understanding Community College Work/Life Balance Issues Through Socialization Theory And Academic Discipline

Research has established that college faculty at research institutions often struggle to maintain a balance between their personal and professional lives (Drago & Williams, 2000; Mason & Goulden, 2002, 2004; Quinn, 2010; Sorcinelli & Near, 1989; Ward & Wolf-Wendel, 2004). While some work/life research has focused on two-year faculty, the research on community college faculty and work/life balance issues has often proved contradictory (Lester & Bers, 2010; Perna, 2001; Sallee, 2008; Townsend & LaPaglia, 2000; Wolf-Wendel, Ward, & Twombly, 2007). Furthermore, little is known about how community college culture and discipline affect the ability of two-year faculty to balance their professional and personal lives. While many theories of socialization have been utilized to explain faculty work (Bess, 1978; Merton, 1957; Tierney & Rhoads, 1994; Van Maanen & Schein, 1979) and disciplinary culture (Austin, 1990; Becher, 1984, 1987; Biglan, 1973; Clark, 1987; Kuh & Whitt, 1988; Tierney, 1990), this body of literature has not often focused on community college faculty. The purpose of this study was to gain a greater understanding of community college faculty work/life balance issues. As a result, I sought to gain a greater understanding of how academic socialization affects community college faculty. Furthermore, I investigated if these changes in socialization patterns produce a culture that presents work/life challenges unique to the community college. Finally, I sought to interrogate the degree to which discipline affects work/life challenges. Data were collected through interviews with 11 full-time community college faculty members from both science and English who had a least one child. The findings revealed Southern State faculty members struggled to balance their personal and professional lives due to time demands associated with faculty workload and family life. The results also indicated that issues associated with instruction often led to work/life issues among the science faculty, while grading was the biggest work/life stressor among the English faculty. Tierney and Rhoads’ (1994) concept of faculty socialization and culture also proved helpful in identifying the causes and patterns of faculty behavior crucial to understanding work/life balance issues specific to community college work

Optimising Trade-offs Among Stakeholders in Ad Auctions

We examine trade-offs among stakeholders in ad auctions. Our metrics are the revenue for the utility of the auctioneer, the number of clicks for the utility of the users and the welfare for the utility of the advertisers. We show how to optimize linear combinations of the stakeholder utilities, showing that these can be tackled through a GSP auction with a per-click reserve price. We then examine constrained optimization of stakeholder utilities. We use simulations and analysis of real-world sponsored search auction data to demonstrate the feasible trade-offs, examining the effect of changing the allowed number of ads on the utilities of the stakeholders. We investigate both short term effects, when the players do not have the time to modify their behavior, and long term equilibrium conditions. Finally, we examine a combinatorially richer constrained optimization problem, where there are several possible allowed configurations (templates) of ad formats. This model captures richer ad formats, which allow using the available screen real estate in various ways. We show that two natural generalizations of the GSP auction rules to this domain are poorly behaved, resulting in not having a symmetric Nash equilibrium or having one with poor welfare. We also provide positive results for restricted cases.Comment: 18 pages, 10 figures, ACM Conference on Economics and Computation 201

Technological Advances in Winery Wastewater Treatment: A Comprehensive Review

The commercial production of wine is directly linked to the use of large amounts of fresh water coupledwith the generation of copious amounts of wastewater containing significant amounts of organic andinorganic substances. The impact of this waste stream on the environment has required the wine industryto implement certain protocols in wastewater management to comply with respective effluent dischargeregulations as set out by local authorities. Reduced accessibility to good quality water resources in recentyears has forced wineries to consider more efficient wastewater management strategies to improve waterrecovery and re-use, thereby promoting more sustainable wine production and minimizing the impact onstressed water resources. This review presents a comprehensive overview of established and emerging,physicochemical, biological, advanced oxidation and hybrid wastewater treatment technologies specificallyapplicable to the wine producing industry. Herein, winery wastewater composition and treatmenttechniques, environmental implications, knowledge gaps, technological operational challenges, alternativedisposal and recycling options of treated winery wastewater are critically evaluated

Rotorcraft handling-qualities design criteria development

Joint NASA/Army efforts at the Ames Research Center to develop rotorcraft handling-qualities design criteria began in earnest in 1975. Notable results were the UH-1H VSTOLAND variable stability helicopter, the VFA-2 camera-and-terrain-board simulator visual system, and the generic helicopter real-time mathematical model, ARMCOP. An initial series of handling-qualities studies was conducted to assess the effects of rotor design parameters, interaxis coupling, and various levels of stability and control augmentation. The ability to conduct in-flight handling-qualities research was enhanced by the development of the NASA/Army CH-47 variable-stability helicopter. Research programs conducted using this vehicle include vertical-response investigations, hover augmentation systems, and the effects of control-force characteristics. The handling-qualities data base was judged to be sufficient to allow an update of the military helicopter handling-qualities specification, MIL-H-8501. These efforts, including not only the in-house experimental work but also contracted research and collaborative programs performed under the auspices of various international agreements. The report concludes by reviewing the topics that are currently most in need of work, and the plans for addressing these topics

Dwelling on the Negative: Incentivizing Effort in Peer Prediction

Agents are asked to rank two objects in a setting where effort is costly and agents differ in quality (which is the probability that they can identify the correct, ground truth, ranking). We study simple output-agreement mechanisms that pay an agent in the case she agrees with the report of another, and potentially penalizes for disagreement through a negative payment. Assuming access to a quality oracle, able to determine whether an agent's quality is above a given threshold, we design a payment scheme that aligns incentives so that agents whose quality is above this threshold participate and invest effort. Precluding negative payments leads the expected cost of this quality-oracle mechanism to increase by a factor of 2 to 5 relative to allowing both positive and negative payments. Dropping the assumption about access to a quality oracle, we further show that negative payments can be used to make agents with quality lower than the quality threshold choose to not to participate, while those above continue to participate and invest effort. Through the appropriate choice of payments, any design threshold can be achieved. This self-selection mechanism has the same expected cost as the cost-minimal quality-oracle mechanism, and thus when using the self-selection mechanism, perfect screening comes for free.Engineering and Applied Science

The Making of a Latin American Global Economist

This paper provides some background for considering the future of these two traditions by looking at global Latin American graduate economic programs. It reports the findings of a survey of Latin American global economics programs and discusses the debate between global economics and traditional economics, arguing that there is a role for both, with global economics concentrating on the science of economics, and traditional economics concentrating on the applied policy "political economy" branch of economics--which is much broader than the applied policy training that graduate students get in global economics.