Tools or Toys? The Impact of High Technology on Scholarly Productivity

Toys. The impact of computers on productivity has been examined directly on macro data and indirectly (on wages) using microeconomic data. This study examines the direct impact on the productivity of scholarship by considering how high technology might alter patterns of coauthoring of articles in economics and their influence. Using all coauthored articles in three major economics journals from 1970-79 and 1992-96, we find: 1) Sharp growth in the percentage of distant coauthorships (those between authors who were not in the same metropolitan areas in the four years prior to publication), as the theory predicts. Contrary to the theory: 2) Lower productivity (in terms of subsequent citations) of distant than close-coauthored papers; and 3) No decline in their relative disadvantage between the 1970s and 1990s. These findings are reconciled by the argument that high-technology functions as a consumption rather than an investment good. As such, it can be welfare-increasing without increasing productivity.

Un géographe lit des œuvres littéraires : Les Eaux étroites de Julien Gracq et L’Intimité de la rivière de Philippe Le Guillou

Le titre de ce texte provient d’un goût particulier et d’une intuition. Le goût particulier est celui que je porte depuis longtemps à l’œuvre de Julien Gracq. L’intuition a surgi il y a peu de temps lorsque j’ai lu le récit de Philippe Le Guillou, L’Intimité de la rivière, publié en 2011. Ce court récit dont la lecture m’a séduit m’a fait songer immédiatement aux Eaux étroites de Julien Gracq, publié en 1976. Ma conviction ancienne que la géographie a des choses à dire sur la littérature trou..

Master of Public Administration (MPA) Program, Capstone

44 pagesThe sun is our most impressive source of energy. More than one million times the earth’s size, every year the sun provides ten times more energy than is stored in all the world’s reserves of coal and oil. The amount and intensity of sunlight varies by location, climate conditions, as well as daily and seasonal trends. Although southern states such as Arizona, California, and New Mexico receive the most sunlight during the year, Iowa ranks among the top third in the United States in the technical potential for solar energy production. Iowa’s 16th-place ranking puts it ahead of many states to the south including Florida, Georgia, and South Carolina. Iowa’s rooftop solar energy potential alone could meet close to 20% of Iowa’s annual electric needs under optimal conditions. The decentralized approach to electricity generation through the creation of small-scale and distributed energy facilities has done wonders for solar proliferation in the state of Iowa as well as had a positive impact on the state’s economic development. Solar energy in Iowa now powers farms, businesses, universities, utilities, communities, and industries, as well as vehicles, and homes in the state. The purpose of this study is to analyze Iowa’s current solar energy blueprint by focusing on current practices, financial aspects, recent policy, and potential limitations. At the heart of this study is the examination of the northeast Iowa community of Decorah where renewable practices are epitomized with more than 50 solar projects found in a town of only 8,000 people. This study will correlate current policy and financial considerations to the case study of Decorah in order to help build a model for solar proliferation in the state of Iowa. It will show that although there may not be a perfect model for solar proliferation for each community in Iowa, there are many recommendations to help the process, including reauthorizing the state solar energy tax credit, cities creating community gardens, and electric utilities’ re-framing of the term “distributed generation” for becoming a comprehensible term which would boost understanding and awareness for potential ratepayers.Professor Allen Zagoren DO, MP

Spare me the details: How the type of information about automated interviews influences applicant reactions

Applicants seem to react negatively to artificial intelligence-based automated systems in personnel selection. This study investigates the impact of different pieces of information to alleviate applicant reactions in an automated interview setting. In a 2 (no process information vs. process information) × 2 (no process justification vs. process justification) between-subjects design, participants (N = 124) received respective information and watched a video showing an automated interview. Testing mediation effects via different applicant reaction variables indicated that process justification is better than process information which can even impair applicant reactions. However, information did not increase organizational attractiveness compared to not receiving any information. This study sheds light on what type of information contributes to positive and negative applicant reactions to automated systems

Inter-spike-intervals Analysis of Poisson Like Hardware Synthetic AER Generation

Address-Event-Representation (AER) is a communication protocol for transferring images between chips, originally developed for bio-inspired image processing systems. Such systems may consist of a complicated hierarchical structure with many chips that transmit images among them in real time, while performing some processing (for example, convolutions). In developing AER based systems it is very convenient to have available some kind of means of generating AER streams from on-computer stored images. In this paper we present a hardware method for generating AER streams in real time from a sequence of images stored in a computer’s memory. The Kolmogorov-Smirnov test has been applied to quantify that this method follows a Poisson distribution of the spikes. A USB-AER board and a PCI-AER board, developed by our RTCAR group, have been used.European Commission IST-2001-34124Ministerio de Ciencia y Tecnología TIC-2003-08164-C03-0

Inter-spike-intervals analysis of AER Poisson-like generator hardware

Address–Event–Representation (AER) is a communication protocol for transferring images between chips, originally developed for bio-inspired image-processing systems. Such systems may consist of a complicated hierarchical structure with many chips that transmit images among them in real time, while performing some processing (for example, convolutions). In developing AER-based systems it is very convenient to have available some means of generating AER streams from on-computer stored images. Rank order coding (ROC) and Poisson rate coding are the extremes of spikes coding. In this paper, we present a pseudo-random hardware method for generating AER streams in real time from a sequence of images stored in a computer’s memory. The Kolmogorov–Smirnov test has been applied to quantify that this method follows a Poisson distribution of the spikes. A USB–AER board, developed by our RTCAR group, have been used for the measurements. An example scenario of use under the EU CAVIAR project is presented.European Commission IST-2001-34124Ministerio de Ciencia y Tecnología TIC-2003-08164-C03-0

What Do We Want From Explainable Artificial Intelligence (XAI)? -- A Stakeholder Perspective on XAI and a Conceptual Model Guiding Interdisciplinary XAI Research

Previous research in Explainable Artificial Intelligence (XAI) suggests that a main aim of explainability approaches is to satisfy specific interests, goals, expectations, needs, and demands regarding artificial systems (we call these stakeholders' desiderata) in a variety of contexts. However, the literature on XAI is vast, spreads out across multiple largely disconnected disciplines, and it often remains unclear how explainability approaches are supposed to achieve the goal of satisfying stakeholders' desiderata. This paper discusses the main classes of stakeholders calling for explainability of artificial systems and reviews their desiderata. We provide a model that explicitly spells out the main concepts and relations necessary to consider and investigate when evaluating, adjusting, choosing, and developing explainability approaches that aim to satisfy stakeholders' desiderata. This model can serve researchers from the variety of different disciplines involved in XAI as a common ground. It emphasizes where there is interdisciplinary potential in the evaluation and the development of explainability approaches.Comment: 57 pages, 2 figures, 1 table, to be published in Artificial Intelligence, Markus Langer, Daniel Oster and Timo Speith share first-authorship of this pape

Poisson AER generator: Inter-Spike-Intervals Analysis

Address-event-representation (AER) is a communication protocol for transferring asynchronous events between VLSI chips, originally developed for bio-inspired processing systems (for example, image processing). Such systems may consist of a complicated hierarchical structure with many chips that transmit data among them in real time, while performing some processing (for example, convolutions). To develop AER based systems for image processing it is very convenient to have available some kind of tool for generating AER streams from on-computer stored images. In this paper we present a hardware method for generating AER streams with Poisson statistics in real time from a sequence of images stored in a computer's memory. We quantify that the events generated follow a Poisson distribution using the Kolmogorov-Smirnov test. We have developed a USB-AER board, based on the Xilinx Spartan II FPGA and the Cygnal 8051 microcontroller, developed by our RTCAR group have been used for the analysisEuropean Commission IST-2001-34124Ministerio de Ciencia y Tecnología TIC-2003-08164-C03-0