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Dry Stacked Surface Bonded Masonry - Structural Testing And Evaluation, Eric B. Murray Dec 2007

Dry Stacked Surface Bonded Masonry - Structural Testing And Evaluation, Eric B. Murray

Theses and Dissertations

The ENDURA block system is a dry-stack surface-bonded masonry system. Typical masonry construction uses thin-set mortar in the bed joints to provide a bearing surface for the blocks while the ENDURA system typically relies on shims and a surface bonding coat to ensure that the wall is level and plumb and to provide stability. Typical ENDURA block walls are built with the reinforcement placed eccentrically in the walls. Testing was performed on ten walls in order to determine axial capacity. The walls were ten feet high by eight feet wide. Each of the walls was built using a different configuration …


One-Dimensional Radial Flow Turbomachinery Performance Modeling, Robert John Pelton Dec 2007

One-Dimensional Radial Flow Turbomachinery Performance Modeling, Robert John Pelton

Theses and Dissertations

The Two-Element In Series (TEIS) and Two-Zone models have been used successfully for over twenty years to model test data for radial flow compressors and pumps. The models can also be used to predict the performance of new machines provided that the model inputs can be accurately specified. Unfortunately, use of the TEIS and Two-Zone models as a predictive tool has been limited because an accurate and broadly applicable method of predicting the modeling parameters, etaA, etaB, chi and d2p does not exist. Empirical models have been developed to predict the TEIS and Two-Zone modeling parameters based on a large …


Optimizing Wireless Network Throughput: Methods And Applications, Pengchang Zhan Dec 2007

Optimizing Wireless Network Throughput: Methods And Applications, Pengchang Zhan

Theses and Dissertations

Ever since Marconi succeeded in his first demonstration on the possibility to communicate over the air overseas about a century ago, wireless communications have experienced dramatic improvements. Today's world sees the penetration of wireless communications into human life almost everywhere, from a simple remote control for TV to a cellular phone. With a better understanding of the adverse nature of the wireless propagation channels, engineers have been able to invent various clever techniques, i.e. Multiple Input Multiple Output (MIMO) technology, spread spectrum communications, Orthogonal Frequency Division Multiplexing (OFDM) to name a few, to achieve fast and reliable communications over each …


Mexico Engineering Study Abroad: Assessing The Effectiveness Of International Experiences On Teaching Global Engineering Skills, Joshua Benjamin Draper Dec 2007

Mexico Engineering Study Abroad: Assessing The Effectiveness Of International Experiences On Teaching Global Engineering Skills, Joshua Benjamin Draper

Theses and Dissertations

Globalization is a rapidly increasing trend in many industries, including civil engineering. This paper defines the skills engineers will need in an increasingly international industry. It also describes an engineering study abroad program designed to teach some of those skills to students and presents a survey used as an assessment tool to evaluate the effectiveness of the program. The program, called Mexico Engineering Study Abroad (MESA), is taught at Brigham Young University (BYU) in Provo, UT. MESA is a project-based extended field trip format class that couples hydrologic modeling with cultural awareness as students work together with Mexican students on …


Clustering Methods For Delineating Regions Of Spatial Stationarity, Jared M. Collings Nov 2007

Clustering Methods For Delineating Regions Of Spatial Stationarity, Jared M. Collings

Theses and Dissertations

This paper seeks to further investigate data extracted by the use of Functional Magnetic Resonance Imaging (FMRI) as it is applied to brain tissue and how it measures blood flow to certain areas of the brain following the application of a stimulus. As a precursor to detailed spatial analysis of this kind of data, this paper develops methods of grouping data based on the necessary conditions for spatial statistical analysis. The purpose of this paper is to examine and develop methods that can be used to delineate regions of stationarity. One of the major assumptions used in spatial estimation is …


Low-Altitude Road Following, Using Strap-Down Cameras On Miniature Aerial Vehicles, Joseph M. Egbert Nov 2007

Low-Altitude Road Following, Using Strap-Down Cameras On Miniature Aerial Vehicles, Joseph M. Egbert

Theses and Dissertations

Miniature air vehicles (MAVs) are particularly well suited for short-distance, over-the-horizon, low-altitude surveillance and reconnaissance tasks. New camera and battery technologies have greatly increased a MAVs potential for these tasks. This thesis focuses on aerial surveillance of borders and roads, where a strap-down camera is used in-the-loop to track a border or road pathway. It is assumed that quality tracking requires that the pathway always remain in the footprint of the camera. The objective of this thesis is to explore roll-angle and altitude-above-ground-level constraints imposed on a bank-to-turn MAV due to the requirement to keep the pathway in the footprint …


Modeling Transition Probabilities For Loan States Using A Bayesian Hierarchical Model, Rebecca Lee Monson Nov 2007

Modeling Transition Probabilities For Loan States Using A Bayesian Hierarchical Model, Rebecca Lee Monson

Theses and Dissertations

A Markov Chain model can be used to model loan defaults because loans move through delinquency states as the borrower fails to make monthly payments. The transition matrix contains in each location a probability that a borrower in a given state one month moves to the possible delinquency states the next month. In order to use this model, it is necessary to know the transition probabilities, which are unknown quantities. A Bayesian hierarchical model is postulated because there may not be sufficient data for some rare transition probabilities. Using a hierarchical model, similarities between types or families of loans can …


Analysis And Implementation Of High-Order Compact Finite Difference Schemes, Jonathan G. Tyler Nov 2007

Analysis And Implementation Of High-Order Compact Finite Difference Schemes, Jonathan G. Tyler

Theses and Dissertations

The derivation of centered compact schemes at interior and boundary grid points is performed and an analysis of stability and computational efficiency is given. Compact schemes are high order implicit methods for numerical solutions of initial and/or boundary value problems modeled by differential equations. These schemes generally require smaller stencils than the traditional explicit finite difference counterparts. To avoid numerical instabilities at and near boundaries and in regions of mesh non-uniformity, a numerical filtering technique is employed. Experiments for non-stationary linear problems (convection, heat conduction) and also for nonlinear problems (Burgers' and KdV equations) were performed. The compact solvers were …


Scandium Oxide Thin Films And Their Optical Properties In The Extreme Ultraviolet, Guillermo Antonio Acosta Nov 2007

Scandium Oxide Thin Films And Their Optical Properties In The Extreme Ultraviolet, Guillermo Antonio Acosta

Theses and Dissertations

This study reports on the physical and optical characterization of scandium oxide thin films. Thin films of scandium oxide, 20-40 nm thick, were deposited on silicon wafers, quartz slides, and silicon photodiodes by reactively sputtering scandium in an oxygen environment. These samples were characterized using ellipsometry, high-resolution transmission electron microscopy, scanning transmission electron microscopy, and energy dispersive x-ray analysis. A 28.46 nm thick scandium oxide thin film was measured in the Extreme Ultraviolet (EUV) from 2.7 to 50 nm (459.3 to 24.8 eV) using synchrotron radiation at the Advanced Light Source Beamline 6.3.2 at the Lawrence Berkeley National Laboratory. In …


A Direct Algorithm For The K-Nearest-Neighbor Classifier Via Local Warping Of The Distance Metric, Tohkoon Neo Nov 2007

A Direct Algorithm For The K-Nearest-Neighbor Classifier Via Local Warping Of The Distance Metric, Tohkoon Neo

Theses and Dissertations

The k-nearest neighbor (k-NN) pattern classifier is a simple yet effective learner. However, it has a few drawbacks, one of which is the large model size. There are a number of algorithms that are able to condense the model size of the k-NN classifier at the expense of accuracy. Boosting is therefore desirable for increasing the accuracy of these condensed models. Unfortunately, there does not exist a boosting algorithm that works well with k-NN directly. We present a direct boosting algorithm for the k-NN classifier that creates an ensemble of models with locally modified distance weighting. An empirical study conducted …


Trapping, Survival, And Probable Causes Of Mortality Of Chukar Partridge, Aaron Clark Robinson Nov 2007

Trapping, Survival, And Probable Causes Of Mortality Of Chukar Partridge, Aaron Clark Robinson

Theses and Dissertations

We present an efficient and effective method for trapping chukars (Alectoris chukar) on artificial water sources. We compared a B-trap, a prairie chicken (Tympanuchus cupido) walk-in trap, a modified quail recall trap, and a newly designed Utah walk-in-funnel trap. Our Utah funnel trap outperformed standard techniques by more than 65%, and exceeded previous published results by 35%. Use of this method allows researchers and managers the ability to capture large numbers of Chukars relatively efficiently. With appropriate modifications this design is applicable for capturing a variety of bird species using small water developments. Chukars (Alectoris chukar) have been introduced throughout …


A Virginia Woolf Of One's Own: Consequences Of Adaptation In Michael Cunningham's The Hours, Brooke Leora Grant Nov 2007

A Virginia Woolf Of One's Own: Consequences Of Adaptation In Michael Cunningham's The Hours, Brooke Leora Grant

Theses and Dissertations

With a rising interest in visual media in academia, studies have overlapped at literary and film scholars' interest in adaptation. This interest has mainly focused on the examination of issues regarding adaptation of novel to novel or novel to film. Here I discuss both: Michael Cunningham's novel The Hours, which is an adaptation of Virginia Woolf's Mrs. Dalloway, and the 2002 film adaptation of Cunningham's novel. However, my thesis also investigates a different kind of adaptation: the adaptation of a literary and historical figure. By including in The Hours a fictionalization of Virginia Woolf, Cunningham entrenches his adaptation with Virginia …


Wordsworth's Evolving Project: Nature, The Satanic School, And (Underline) The River Duddon (End Underline), Kimberly Jones May Nov 2007

Wordsworth's Evolving Project: Nature, The Satanic School, And (Underline) The River Duddon (End Underline), Kimberly Jones May

Theses and Dissertations

The purpose of this thesis is to discuss Wordsworth's evolving nature project, particularly during the Regency, when his sonnet collection The River Duddon offered an alternative view of nature to that found in the works of Byron and Shelley. This thesis argues that The River Duddon deserves renewed critical attention not only because of the acclaim it received at its publication in 1820, but also because it marks yet another turn in Wordsworth's evolving nature project, and one that comes in opposition to the depiction of nature given during the Regency by Byron, and Shelley. Wordsworth's portrayal of nature dramatically …


Construction Of A Calcium Matter-Wave Interferometer, Christopher Joseph Erickson Nov 2007

Construction Of A Calcium Matter-Wave Interferometer, Christopher Joseph Erickson

Theses and Dissertations

I describe the construction of a calcium matter-wave interferometer. The interferometer is based on a Ramsey-Borde scheme, and uses a thermal beam of atoms excited by an optical-frequency transition in calcium. In our experiment four pi/2 pulses of light are delivered to the atoms, which split and recombine the wave functions of the atoms. Our experimental design minimizes first-order Doppler shifts, and allows for the cancellation of systematic errors including phase shifts due to rotation and acceleration. I describe the individual components of the interferometer and its assembly. The requirements for the electronics used in the experiment as well as …


Mythic Symbols Of Batman, John J. Darowski Nov 2007

Mythic Symbols Of Batman, John J. Darowski

Theses and Dissertations

Batman has become a fixture in the popular consciousness of America. Since his first publication in Detective Comics #27 in 1939, he has never ceased publication, appearing in multiple titles every month as well as successfully transitioning into other media such as film and television. A focused analysis of the character will reveal that Batman has achieved and maintained this cultural resonance for almost seventy years by virtue of attaining the status of a postmodern American mythology. In both theme and function, Batman has several direct connections to ancient mythology and has adapted that form into a distinctly American archetype. …


Synthesis Of Optimal Arrays For Mimo And Diversity Systems, Britton T. Quist Nov 2007

Synthesis Of Optimal Arrays For Mimo And Diversity Systems, Britton T. Quist

Theses and Dissertations

This thesis proposes a method for determining the optimal antenna element radiation characteristics which maximize diversity gain given a specific power angular spectrum of the propagation environment. The method numerically constructs the eigenfunctions of the covariance operator for the scenario subject to constraints on the power radiated by each antenna as well as the level of supergain allowed in the solution. The optimal antenna characteristics are produced in terms of radiating current distributions along with their resulting radiation patterns. The results reveal that the optimal antennas can provide significantly more diversity gain than that provided by a simple practical design. …


The Church Of Jesus Christ Of Latter-Day Saints In National Periodicals: 1991-2000, Casey William Olson Nov 2007

The Church Of Jesus Christ Of Latter-Day Saints In National Periodicals: 1991-2000, Casey William Olson

Theses and Dissertations

From 1991 through 2000, The Church of Jesus Christ of Latter-day Saints experienced a greater volume of national periodical attention than ever before in its history. This thesis surveys what was written about the Church in national magazines during that time and provides analysis of the effect of those writings on the Church's public image. National periodicals may serve as an important gauge of the Church's public image because they address topics of national interest and also help to formulate public opinion on those topics. This study thus provides a basis for determining how the Church fared in terms of …


The Play's The Thing: Investigating The Potential Of Performance Pedagogy, Tamara Lynn Scoville Nov 2007

The Play's The Thing: Investigating The Potential Of Performance Pedagogy, Tamara Lynn Scoville

Theses and Dissertations

In the last ten years there has been a resurgence of interest in teaching Shakespeare through performance. However, most literature on the topic continues to focus on the pragmatic selling points of how performance makes Shakespeare fun and understandable while remaining surprisingly silent on issues of theory and ethics. By investigating the ethical implications of performance pedagogy as it affects our students' construction of identity, empathy, and pluralistic tolerance we can better understand and discuss the potential of performance pedagogy in relation to the ethical goals of the Humanities. Performance Pedagogy has particular ethical potential due to the structure of …


Four Greco-Roman Era Temples Of Near Eastern Fertility Goddesses: An Analysis Of Architectural Tradition, K. Michelle Wimber Nov 2007

Four Greco-Roman Era Temples Of Near Eastern Fertility Goddesses: An Analysis Of Architectural Tradition, K. Michelle Wimber

Theses and Dissertations

Lucian, writing in the mid-second century AD, recorded his observations of an "exotic" local cult in the city of Hierapolis in what is today Northern Syria. The local goddess was known as Dea Syria to the Romans and Atargatis to the Greeks. Lucian's so-named De Dea Syria is an important record of life and religion in Roman Syria. De Dea Syria presents to us an Oriental cult of a fertility goddess as seen through the eyes of a Hellenized Syrian devotee and religious ethnographer. How accurate Lucian's portrayal of the cult is questionable, though his account provides for us some …


Space-Time Coding With Offset Modulations, N. Thomas Nelson Nov 2007

Space-Time Coding With Offset Modulations, N. Thomas Nelson

Theses and Dissertations

In this dissertation it is shown that the telemetry versions of Feher-patented QPSK (FQPSK-JR) and shaped offset QPSK (SOQPSK-TG) can be interpreted as both cross-correlated, trellis-coded quadrature modulation (XTCQM) and continuous phase modulation (CPM). Based on these representations, both modulations can be detected with near optimal bit error rate performance using a common detector that is formulated as either an XTCQM detector, a traditional CPM detector, or a pulse amplitude modulation (PAM) detector (due to the PAM decomposition of the CPM representations of these modulations). In addition it is shown that the complexity of the XTCQM detector for SOQPSK-TG can …


The Gratification Niches Of Internet Social Networking, E-Mail, And Face-To-Face Communication, Robert Scott Nyland Nov 2007

The Gratification Niches Of Internet Social Networking, E-Mail, And Face-To-Face Communication, Robert Scott Nyland

Theses and Dissertations

Internet social networking sites have been the source of much speculation and controversy in the few years that they have been in existence. These sites (the most popular being MySpace and Facebook) allow their users to create online profiles, with which they can post pictures of themselves and interact with other users via text-based messaging. These sites are especially popular among teens and young adults, many of whom find their lives controlled by these sites. Utilizing the Uses and Gratificatioons approach in combination with the theory of the niche, the aim of this study is to understand the gratifications that …


Low Loss Hybrid Waveguide Electric Field Sensor Based On Optical D-Fiber, Eric K. Johnson Nov 2007

Low Loss Hybrid Waveguide Electric Field Sensor Based On Optical D-Fiber, Eric K. Johnson

Theses and Dissertations

This thesis presents the fabrication of a low loss hybrid waveguide electric field(E-field) sensor based on optical D-fiber. This novel E-field sensor is formed as part of a contiguous fiber resulting in a flexible and small cross-section device that can be embedded into electronic circuitry. The in-fiber nature of this sensor also eliminates the need for alignment and packaging that conventional sensors need. An optical fiber can detect electric fields when the core of the fiber is partially removed and replaced with an electro-optic polymer. This polymer causes a change in the index of refraction in the waveguide of the …


Microchip Liquid Chromatography And Capillary Electrophoresis Separations In Multilayer Microdevices, Hernan Vicente Fuentes Nov 2007

Microchip Liquid Chromatography And Capillary Electrophoresis Separations In Multilayer Microdevices, Hernan Vicente Fuentes

Theses and Dissertations

In this dissertation, several microfabricated devices are introduced to develop new applications in the area of chemical analysis. Electrochemical micropumps, chip-based liquid chromatography systems and multilayer capillary electrophoresis microdevices with crossover channels were fabricated using various substrates such as poly(dimethylsiloxane) (PDMS), glass, and poly(methyl methacrylate) (PMMA). I have demonstrated pressure-driven pumping of liquids in microfabricated channels using electrochemical actuation. PDMS-based micropumps were integrated easily with channel-containing PMMA substrates. Flow rates on the order of ~10 µL/min were achieved using low voltages (10 V). The potential of electrolysis-based pumping in microchannels was further evaluated for pressure driven microchip liquid chromatography (LC). …


An Evaluation Of A Low-Cost Uav Approach To Noxious Weed Mapping, Brandon Tyler Jones Nov 2007

An Evaluation Of A Low-Cost Uav Approach To Noxious Weed Mapping, Brandon Tyler Jones

Theses and Dissertations

Mapping their location and extent is a critical step in noxious weed management. One of the most common methods of mapping noxious weeds is to walk the perimeter of each patch with a handheld GPS receiver. This is the method used at Camp Williams, a National Guard Bureau training facility in Utah where this study was conducted. It was proposed that a low-cost Unmanned Aerial Vehicle (UAV) that made use of a hobbyist remote control airplane equipped with a Global Positioning System (GPS) receiver and digital camera could be used along with automated post-processing techniques to reduce the cost of …


The Ecology Of Translocated Greater Sage-Grouse In Strawberry Valley, Utah, Rick Joseph Baxter Nov 2007

The Ecology Of Translocated Greater Sage-Grouse In Strawberry Valley, Utah, Rick Joseph Baxter

Theses and Dissertations

Manuscript No. 1 Translocations of greater sage-grouse (Centrocercus urophasianus) have been attempted in 7 states and one Canadian province with very little success. To recover a small remnant population and test the efficacy of sage-grouse translocations, we captured and transported 137 adult female sage-grouse from 2 source populations to a release site in Strawberry Valley, Utah during March-April 2003-2005. The resident population of sage-grouse in Strawberry Valley was approximately 150 breeding birds prior to the release. We radiomarked each female and documented survival, movements, reproductive effort, flocking with resident grouse, and lek attendance. We used Program MARK to calculate annual …


Pornography Viewing As Attachment Trauma In Pair-Bond Relationships-A Theoretical Model Of Mechanisms., Spencer T. Zitzman Nov 2007

Pornography Viewing As Attachment Trauma In Pair-Bond Relationships-A Theoretical Model Of Mechanisms., Spencer T. Zitzman

Theses and Dissertations

Online sexual activities, including pornography use, have drastically increased in recent years. Many studies have examined the impact that pornography use can have on marriages and families. One of the key findings has been that pornography use can negatively impact trust in relationships. This study focused on understanding the mechanisms involved when a husband's pornography use negatively impacts his marital relationship and his wife's emotional well-being. Through qualitative analysis of interviews of 14 wives who received therapy because of their husband's pornography use, the analytic team found (1) a breakdown of expectations and assumptions central to the marriage, (2) a …


Effects Of Delayed Auditory Feedback On The Bereitschaftspotential, Jennifer L. Johnson Nov 2007

Effects Of Delayed Auditory Feedback On The Bereitschaftspotential, Jennifer L. Johnson

Theses and Dissertations

This study examined the brain electrical activity of normal speakers in a non-delayed auditory feedback (DAF) condition and when experiencing DAF to determine the effect DAF would have on the Bereitschaftspotential (BP). The BP reflects the preparatory state of a person prior to motor execution of an act and can be observed 1500 to 500 ms prior to voluntary movement. The participants in the study included 10 adults with normal speech. Each read a series of 30 sentences, both without DAF and with DAF, while the BP was measured. Results indicate that the BP is present across the scalp in …


Microfluidic Electro-Osmotic Flow Pumps, John Mason Edwards Nov 2007

Microfluidic Electro-Osmotic Flow Pumps, John Mason Edwards

Theses and Dissertations

The need for miniaturized, portable devices to separate and detect unknown compounds has greatly multiplied, leading to an increased interest in microfluidics. Total integration of the detector and pump are necessary to decrease the overall size of the microfluidic device. Using previously developed thin film technologies, an electroosmotic flow (EOF) pump was incorporated in a microfluidic liquid chromatography device. An EOF pump was chosen because of its simple design and small size. EOF pumps fabricated on silicon and glass substrates were evaluated. The experimental flow rates were 0.19-2.30 microliters/minute for 40-400 V. The theoretical pump efficiency was calculated along with …


An Approach To Mapping Of Shallow Petroleum Reservoirs Using Integrated Conventional 3d And Shallow P- And Sh-Wave Seismic Reflection Methods At Teapot Dome Field In Casper, Wyoming, Anita Onohuome Okojie-Ayoro Nov 2007

An Approach To Mapping Of Shallow Petroleum Reservoirs Using Integrated Conventional 3d And Shallow P- And Sh-Wave Seismic Reflection Methods At Teapot Dome Field In Casper, Wyoming, Anita Onohuome Okojie-Ayoro

Theses and Dissertations

Using the famous Teapot Dome oil field in Casper, Wyoming, USA as a test case, we demonstrate how high-resolution compressional (P) and horizontally polarized shear (SH) wave seismic reflection surveys can overcome the limitations of conventional 3D seismic data in resolving small-scale structures in the very shallow subsurface (< 100-200 m (~328-656 ft)). We accomplish this by using small CMP intervals (5 ft and 2.5 ft, respectively) and a higher frequency source. The integration of the two high-resolution seismic methods enhances the detection and mapping of fine-scale deformation and stratigraphic features at shallow depth that cannot be imaged by conventional seismic methods. Further, when these two high-resolution seismic methods are integrated with 3D data, correlated drill hole logs, and outcrop mapping and trenching, a clearer picture of both very shallow reservoirs and the relationship between deep and shallow faults can be observed. For example, we show that the Shannon reservoir, which is the shallowest petroleum reservoir at Teapot Dome (depth to the top of this interval ranging from 76-198 m (250-650 ft)) can only be imaged properly with high-resolution seismic methods. Further, northeast-striking faults are identified in shallow sections within Teapot Dome. The strike of these faults is approximately orthogonal to the hinge of Teapot Dome. These faults are interpreted as fold accommodation faults. Vertical displacements across these faults range from 10 to 40 m (~33 to 131 ft), which could potentially partition the Shannon reservoir. The integration of 3D and high-resolution P-wave seismic interpretation helped us determine that some of the northeast-striking faults relate to deeper faults. This indicates that some deeper faults that are orthogonal to the fold hinge cut through the shallow Shannon reservoir. Such an observation would be important for understanding the effect on fluid communication between the deep and shallow reservoirs via these faults. Furthermore, the high-resolution seismic data provide a means to better constrain the location of faults mapped from drill hole logs. Relocation of theses faults may require re-evaluation of well locations as some attic oil may have not been drained in some Shannon blocks by present well locations. Therefore our study demonstrates how conventional 3D seismic data require additional seismic acquisition at smaller scales in order to image deformation in shallow reservoirs. Such imaging becomes critical in cases of shallow reservoirs where it is important to define potential problems associated with compartmentalization of primary production, hazard mitigation, enhanced oil recovery, or carbon sequestration.


A Qualitative Analysis Of Brigham Young University's Golden Age Theater Production And Outreach Course, Sheila Jan Barton Nov 2007

A Qualitative Analysis Of Brigham Young University's Golden Age Theater Production And Outreach Course, Sheila Jan Barton

Theses and Dissertations

The present research consists of a comparative study of Brigham Young University's Golden Age Comedia (GAC) and Golden Age Theater Production (GATP) courses. The two courses cover much of the same academic material, but one of the differences between the two approaches to the teaching of Golden Age literature is that the GATP course incorporates a theater production and outreach component. Although this outreach program has been seen as intuitively and anecdotally effective, there has been no prior attempt to document student motivation for choosing this course over the traditionally taught course (GAC), nor to discover any of the outcomes …