The basis problem for subspaces of monotonically normal compacta

We prove, assuming Souslin's Hypothesis, that each uncountable subspace of each zero-dimensional monotonically normal compact space contains an uncountable subset of the real line with either the metric, the Sorgenfrey, or the discrete topology.Comment: 12 page

Analytic Drag Controller guidance gains evaluation. Mission planning, mission analysis and software formulation

Results of a study to optimize the guidance gains for the analytical drag control entry guidance system are presented. The guidance gains were optimized for study points chosen in all phases of entry

Acoustic inter- and intra-room similarity based on room acoustic parameters

This paper shows various approaches for determining acoustic (dis-)similarity based on room acoustic parameter values derived from real measurements. The similarity is calculated across different room configurations and/or between different microphone-loudspeaker positions within the same room configuration. We compare supervised (LDA, Random Forrest) and unsupervised techniques (PCA, SPPA) and pre-selected visualizations in terms of their ability to exhibit inter- and intra-room (dis-)similarities. The data set generated comprises spatially high-resolution room impulse responses obtained from multiple source-receiver positions within a room configuration. The room acoustics are varied by introducing active walls and geometries accounting for specific room configurations. The results show that the separation of room configurations primarily relies on specific acoustic parameters, with the reverberation time playing an important role. Within a given room configuration, the acoustic parameters excluding the reverberation time mainly capture the orientation and distance between the source and receiver

Overlay Design and Reflection Cracking Analysis for Rigid Pavements Vol. 1. Development of New Design Criteria

DOT-FH-11-8544Fatigue cracking and reflection cracking criteria were developed and incorporated into a design procedure for flexible and rigid overlays of rigid pavements. Linear elastic layered theory is the basic model used to compute stresses and strains in the pavement system, which are then input to the fatigue and reflection cracking models. The fatigue criteria developments resulted from analyses of the performance of rigid pavements at the AASHO Road Test. A regression analysis was performed to obtain a fatigue equation relating stress and wheel load repetitions prior to Class 3 and 4 cracking. The effects of voids beneath the pavement as well as the condition of joints are also considered in the fatigue criteria. The reflection cracking criteria developed resulted from a study of the mechanics of reflection cracking and literature reviews. Mechanistic equations were derived and incorporated into an analysis model for use in design

Flexible and Rigid Pavement Overlay Design Procedure

DOT-FH-11-8544This manual presents design procedures for overlays of both flexible and rigid pavements. The design procedure includes an evaluation of the existing pavement based on nondestructive deflection testing, condition surveys, and materials sampling and testing. Based on this information the pavement is divided into separate design sections and each section is classified according to its condition of cracking. An analysis to determine the required overlay thickness is then made based on the category to which the existing pavement is assigned. The overlay analysis makes extensive use of elastic layered theory and selects the overlay thickness based on the concept of failure by fatigue cracking or rutting. The design procedure uses three computer programs for the pavement evaluation and overlay thickness design. Input guides and illustrative problems for the use of these programs are presented in this report

Effect of mixing on polymerization of styrene

Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to [email protected], referencing the URI of the item.Bibliograpahy: leaves 99-100.Not availabl

Hotel Revolution: How Technology Fuels the 'Sharing Economy,' Challenges the Hotel Industry and Transforms Space

The Sharing Economy is a disruptive force in many industries, particularly travel, consumer goods, transportation, finance, and employment. A driver in this transformative system is the home-sharing online platform, Airbnb. As an impactful innovation, it provides a certain unique set of options that traditional hotels do not. In contrast to traditional hotel experiences, it o¬ffers better access and affordability, endless options to bookings and locations, personal customization, a unique and meaningful experience, and a relationship between users and hosts. This research investigates the key components of the sharing economy business model’s success, and applys it to the hotel environments that are adapting to the future. The research looks specifically at spatial comparisons between Airbnb listings and hotels, human feedback and expectations, experiential values that have been created by this technology, and regulations that may be necessary.Architecture and Design, Gerald D. Hines College ofHonors Colleg

Location of platinum clusters in PtCaY and PtNaY zeolites

Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to [email protected], referencing the URI of the item.Bibliography: leaves 86-88.Not availabl