264 research outputs found
Supporting data used in the paper: Xi Chen, 2020, The LMARS based shallow-water dynamical core on generic gnomonic cubed-sphere geometry
No full text# Simulation results of the unstaggered shallow water model
This repository contains the supporting data used in the paper: Xi Chen, 2020, The LMARS based shallow‐water dynamical core on generic gnomonic cubed‐sphere geometry, DOI: 10.1029/2020MS002280
Organization of the repository:
The tar archive with this data submission has a:
doc directory contains a README.md with information regarding naming conventions to label the model configurations for a shallow water test simulation. Additional information can also be found in README.md. Table 4 in the paper provides additional details.
The data directory contains the supporting data files (NetCDF format).Disclaimer: "This was prepared by Xi Chen under award NA18OAR4320123 from the National Oceanic and Atmospheric Administration, U.S. Department of Commerce. The statements, findings, conclusions, and recommendations are those of the author(s) and do not necessarily reflect the views of the National Oceanic and Atmospheric Administration, or the U.S. Department of Commerce.
Ads in mobile applications
No full textThe usage of mobile applications has increased phenomenally with the growth of smart phones. According to Apple, as of Feb 2012, close to 800,000 third party applications were available on the App Store. They have been downloaded more than 15 billion times. The android platform is close behind with 450,000 apps in Google Play that have been downloaded more than 10 billion times. When we look at Advertising revenues from mobile phones (app and browser included), in-app mobile Ads account for only a fraction of the total. IDC estimates 70% of Mobile Ad budgets are spent on search based advertising. The rest is a combination of placements in applications and content on the web. Compared to the application usage statistics for popular platforms, the revenue generated through Ads using these apps as the medium has just not kept pace. The numbers point to a lot of scope for growth. Moreover, with more and more apps becoming free to download, these Ads are here to stay. What makes in-app mobile Ads even more interesting is their potential to deliver highly targeted Ads. In this paper, we study Ads in mobile applications. We limit the scope of our study to in-app mobile Ads, that appear anywhere within a mobile application when it is being used. This could be in the form of text, rich media or banner. Our purpose is to understand how Ads in mobile apps work and how they can be used by advertisers to engage audiences with targeted Ads. To this end, we run Ad campaign experiments in select countries in Asia and North America. Through these experiments; we aim to study the factors affecting the performance of Ad campaigns and inferences that can be made from data obtained through the campaigning processM.S.Includes bibliographical referencesby Aparna Vaikunta
Proton-coupled electron transfer in molecular and material catalysis
No full textProton-coupled electron transfer (PCET) plays an important role in a variety of electrochemical and photo-excited reactions occurring in molecular, material, and biological systems. In this thesis, the role of PCET in hydrogen evolution molecular electrocatalysts, and iron-doped nickel-oxyhydroxide thin films used for oxygen evolution reaction, are explored by means of quantum chemistry. Detailed electronic structural analysis performed using density functional theory is used to provide atomic level understanding of these catalytic systems. The electron-proton nonadiabaticity of PCET process is investigated for the phenoxyl/phenol self-exchange reaction, and the results show that the vibronic coupling is dependent on the molecular geometry. This diagnostic is important for the calculation of PCET rate constants. The rate constants and kinetic isotope effects for concerted PCET in a set of hydroquinone derivatives are calculated and analyzed in comparison with experimental data.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-12-01The student, Aparna Karippara Harshan, accepted the attached license on 2018-09-28 at 10:38.The student, Aparna Karippara Harshan, submitted this Dissertation for approval on 2018-09-28 at 12:24.This Dissertation was approved for publication on 2018-10-01 at 09:56.DSpace SAF Submission Ingestion Package generated from Vireo submission #13025 on 2019-02-08 at 11:38:08Made available in DSpace on 2019-02-08T18:39:41Z (GMT). No. of bitstreams: 2
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Regulation of arcuate genes by developmental exposures to endocrine-disrupting compounds in female rats
No full textDevelopmental exposure to endocrine-disrupting compounds (EDCs) alters reproduction and energy homeostasis, both of which are regulated by the arcuate nucleus (ARC). Little is known about the effects of EDC on ARC gene expression. In Experiment #1, pregnant dams were treated with either two doses of bisphenol A (BPA) or oil from embryonic day (E)18-21. Neonates were injected from postnatal day (PND)0-7. Vaginal opening, body weights, and ARC gene expression were measured. Chrm3 (muscarinic receptor 3) and Adipor1 (adiponectin receptor 1) were decreased by BPA. Bdnf (brain-derived neurotropic factor), Igf1 (insulin-like growth factor 1), Htr2c (5-hydroxytryptamine receptor), and Cck2r (cholescystokinin 2 receptor) were impacted. In Experiment #2, females were exposed to BPA, diethylstilbestrol (DES), di(2-ethylhexyl)phthalate, or methoxychlor (MXC) during E11-PND7. MXC and DES advanced the age of vaginal opening and ARC gene expression was impacted. These data indicate that EDCs alter ARC genes involved in reproduction and energy homeostasis in females.Peer reviewe
DockerCon use-case: Reproducible climate research, Facilitating inspiration-driven and industrial-strength analysis
No full textMany thanks to collaborators at GFDL and Pangeo.
Related videos and articles:
https://www.youtube.com/watch?v=2MK5vxjolfw
https://www.docker.com/blog/manufacturing-to-climate-analytics-real-use-cases-dockercon-speakers
Sensor-based trajectory tracking of anthropomorphic test device in crash testing: A methodology
No full textThesis (M.S.)-- Wichita State University, College of Engineering, Dept. of Mechanical EngineeringThe evaluation of Anthropomorphic Test Device (ATD) kinematics, particularly head trajectory, presents a significant challenge in aerospace seat development and certification testing. Optical motion tracking is a widely used method for tracking and plotting trajectories during aircraft crash tests. It has however, several inherent limitations. While recent advancements in software have enhanced the accuracy of post-processing, maintaining continuous target visibility remains a challenge.
This study focuses on development of an approach for tracking the head trajectory of an ATD for better understanding of ATD kinematics during crash tests. While sensor-based tracking is a more time and cost-effective method than optical motion tracking, previous studies have indicated that it might at times provide lower accuracy. The primary objectives of this research are to investigate and improve the accuracy of sensor-based tracking, to develop a methodology to capture it, and to compare the results for accurate and better prediction.
The proposed methodology relies on a MATLAB-based algorithm consisting of spatial transformation matrix operations with Euler parameters, numerical methods and integration techniques. It utilizes initial ATD position measurements, angular velocity and acceleration data from the sensors, as inputs. It is capable of generating the 3D trajectory of the head. The potential for use of this methodology to the ATD chest is also investigated. It shows promising advancement in sensor-based tracking, suggesting that with the development of proper MEMS technology, sensor-based tracking could potentially replace optical motion tracking. For further studies, there is a wide possibility of extending the research to other body parts like lower extremities of the body to get holistic understanding of kinematic behavio
Three essays on the relationship between land conservation and economic development
No full textLand degradation is a significant cause of biodiversity loss, food insecurity, and persistent poverty. In this dissertation, I explore how land conservation and conversion policies affect economic development and human welfare. I use current and historical contexts and compile primary data sources to answer this question. I use case studies from both developing and developed countries, and from both land conversion and working land conservation policies.
In the first chapter, I study the effects of forest protected areas (PAs) on surrounding households in a developing country. I use Nepal’s recently established PAs as a case study to see the effects on the households who depend on the forest. I find that PAs reduce household wood collection, but there is no evidence that other household consumption is significantly reduced by the strain of reduced access to forest resources nor that PAs rapidly attracted tourism that increased household welfare in these rural villages.
This analysis of the immediate effects of land conservation policies in Nepal cannot shed light on all the effects of conservation policies, as land and soil quality change takes time. Historical events provide a more complete picture. Thus, my second two chapters study historical land conservation policies in the United States (US).
In my second chapter, I explore the persistent impacts on the environment of the earliest farmland conservation policies in the Great Plains. The 1930s Dust Bowl compelled the federal government to undertake large soil conservation policies; I evaluate the effects of those policies over fifty years. Results show that the Voluntary Acreage Reduction program had beneficial long-term effects, increasing areas planted in grassland and decreasing soil erosion in areas that were previously heavily planted in corn and wheat.
Land conservation policies also include creating and nurturing local institutions for management. In my third chapter, I study what factors affected the speed with which local environmental institutions – the Soil Conservation Districts (SCDs) – were created to improve farmland resource management. I use historical documents to create a dataset on exactly when SCDs were established during the period of 1936-1956. A duration analysis of those data finds that SCDs did rise up more rapidly in places hit hardest by crop failure, but institutional change was slower in areas dominated by farms managed by tenants who did not have legal authority to help create SCDs to help preserve their farms.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-08-01The student, Aparna Howlader, accepted the attached license on 2019-07-01 at 13:43.The student, Aparna Howlader, submitted this Dissertation for approval on 2019-07-01 at 14:26.This Dissertation was approved for publication on 2019-07-03 at 16:59.DSpace SAF Submission Ingestion Package generated from Vireo submission #14122 on 2019-11-26 at 13:04:13Made available in DSpace on 2019-11-26T20:49:19Z (GMT). No. of bitstreams: 2
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Previous issue date: 2019-07-03Embargo set by: Seth Robbins for item 112920
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Managing workforce diversity to enhance cooperation in organizations
No full textThe growing sophistication of research on diversity in organizations parallels the evolution of organizations into increasingly complex and dynamic forms. As teams interact with other teams, the organizational context in which teams operate can create opportunities as well as pose challenges for team functioning . In this chapter, we consider how the demographic characteristics of the organizational context influences teamwork and so attempt to contribute to the academic discourse on diversity in two ways. First, we draw attention to the intrinsic value of diversity in relation to a team's external relationships. To meet organizational goals, each team must be effective in terms of its internal functioning . In addition, each team must effectively manage its relationships with other teams and individuals in the organization Through their relationships, team members may gain access to needed resources and exert influence that is beneficial to the team and its individual members. Past research, grounded in social psychological theory, has focused on the negative relationship between team diversity and internal team processes such as team cooperation. We recognize that an additional component of team functioning is relationships between teams. Based on social psychological theory, we argue that diversity in teams will be manifested in cooperative behaviors between teams in organizations
Effects of distractions on decision-making processes and outcomes
No full textThis dissertation focuses on how distractions affect decision-making. The distractions studied here are in the form of text-messaging using a mobile phone in the context of interdependent decision-making tasks such as a negotiation. The effects are studies under two types of negotiations: distributive (one that requires participants to be competitive) versus collaborative (interests of both parties are similar). Through a series of four experimental studies, the effects of distractions were observed in the following three types of experimental conditions: (1.) one-person in a dyad is texting during the negotiation, (2.) both persons in a dyad are texting in a negotiation and (3.) control group, with no distractions. Findings indicate that performance in a negotiation is adversely affected when a person is distracted. Control groups performed best, followed by ‘both-receiver’ or both-distracted groups. In study 1, it is found that perceptions of trust, satisfaction and professionalism of the distracted person are lower than those for non-distracted persons. In study 4, findings indicate a main effect of distractions for information sharing such that receivers shared least information, followed by observers, followed by ‘both-receivers’ and then by the control group.Ph. D.Includes bibliographical referencesIncludes vitaby Aparna Krishna
Vulnerability of Dairy-Based Livelihoods to Climate Variability and Change:A Study of Western Ghats Region in Wayanad, Kerala
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