Daniel H. Olsen
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View article: PR179-242000-R01 Evaluating Grease Performance for In-Situ Valve Repairs
PR179-242000-R01 Evaluating Grease Performance for In-Situ Valve Repairs Open
This project explores the use of sealants for in-situ valve repair. An experimental apparatus was designed and fabricated for evaluating valve leak repair. A controlled leak was created on a 6" ball valve and the sealing capability of mult…
View article: Methane emission reduction through hydrogen blending in a large bore 2-stroke lean-burn natural gas compressor engine
Methane emission reduction through hydrogen blending in a large bore 2-stroke lean-burn natural gas compressor engine Open
Impending and increasingly stringent emissions regulations regarding natural gas compressor engines drive the research behind blending hydrogen with natural gas to make these internal combustion engines and their combustion process more ef…
View article: The diverse diet of southern Alaska resident killer whales changes across spatiotemporally distinct foraging aggregations
The diverse diet of southern Alaska resident killer whales changes across spatiotemporally distinct foraging aggregations Open
Top predators influence ecological communities in part through the prey they consume, which they often track through cycles of seasonal and geographic abundance. Killer whales are top predators in the marine ecosystem. In the North Pacific…
View article: Batch Active Learning for Microstructure-Property Relations in Energetic Materials
Batch Active Learning for Microstructure-Property Relations in Energetic Materials Open
View article: Effect of Fuel Reactivity and End- Gas Temperature on Autoignition and Flame Propagation Rate in Primary Reference Fuel Mixtures at Elevated Temperature and Pressure
Effect of Fuel Reactivity and End- Gas Temperature on Autoignition and Flame Propagation Rate in Primary Reference Fuel Mixtures at Elevated Temperature and Pressure Open
Knock in spark-ignited (SI) engines is initiated by autoignition in the unburned gases upstream of spark-ignited, propagating, turbulent premixed flames. In this study, knock propensity of SI fuels was quantified via observations of end-ga…
View article: 3-D Modeling off the CFR Engine for the Investigation of Knock on Natural Gas
3-D Modeling off the CFR Engine for the Investigation of Knock on Natural Gas Open
Engine knock and misfire are barriers to pathways leading to high-efficiency Natural Gas (NG) engines. The general tendency to knock is highly dependent on engine operating conditions and the fuel reactivity. The problem is further complic…
View article: Reframing the Intersections of Pilgrimage, Religious Tourism, and Sustainability
Reframing the Intersections of Pilgrimage, Religious Tourism, and Sustainability Open
Every year, hundreds of millions of people around the world travel to sacred places to worship and to learn. While the practice of pilgrimage has a long tradition and is an important part of many religious traditions and the spiritual deve…
View article: New Pilgrimage Routes and Trails
New Pilgrimage Routes and Trails Open
Since the dawn of humanity, people have traveled in search of meaning and to petition for worldly and otherworldly blessings. In the twenty-first century, the number of people traveling to religious sacred sites on pilgrimage has increased…
View article: A 2030 United States Macro Grid Unlocking Geographical Diversity to Accomplish Clean Energy Goals
A 2030 United States Macro Grid Unlocking Geographical Diversity to Accomplish Clean Energy Goals Open
Some U.S. states have set clean energy goals and targets in an effort to decarbonize their electricity sectors. There are many reasons for such goals and targets, including the increasingly apparent effects of climate change. A handful of …
View article: Medial versus lateral camera port placement for robotic nephron-sparing surgery: Evaluating surgical complications and outcomes
Medial versus lateral camera port placement for robotic nephron-sparing surgery: Evaluating surgical complications and outcomes Open
Introduction As the growing popularity of robotic assisted laparoscopic procedures for the treatment of renal cancer increases, there exists a variation in surgical technique among institutions and surgeons alike. One variation that exists…
View article: Effect of void positioning on the detonation sensitivity of a heterogeneous energetic material
Effect of void positioning on the detonation sensitivity of a heterogeneous energetic material Open
Although it is well-established that voids profoundly influence the initiation and reaction behaviors of heterogeneous energetic materials such as polymer-bonded explosives (PBX) and propellants, there has been little study of how void loc…
View article: Autoignition of Premixed Liquefied Petroleum Gas in a Rapid Compression Machine: Experimental Results and Chemical Kinetic Mechanism Reduction
Autoignition of Premixed Liquefied Petroleum Gas in a Rapid Compression Machine: Experimental Results and Chemical Kinetic Mechanism Reduction Open
Liquefied petroleum gas (LPG) has many properties that make it an attractive alternative fuel such as lower cost than conventional fuels and an established distribution infrastructure. The development of high efficiency, spark ignited LPG …
View article: Prediction of Probabilistic Shock Initiation Thresholds of Energetic Materials Through Evolution of Thermal-Mechanical Dissipation and Reactive Heating
Prediction of Probabilistic Shock Initiation Thresholds of Energetic Materials Through Evolution of Thermal-Mechanical Dissipation and Reactive Heating Open
The ignition threshold of an energetic material (EM) quantifies the macroscopic conditions for the onset of self-sustaining chemical reactions. The threshold is an important theoretical and practical measure of material attributes that rel…
View article: MULTI-DIMENSIONAL MODELING OF THE CFR ENGINE FOR THE INVESTIGATION OF SI NATURAL GAS COMBUSTION AND CONTROLLED END-GAS AUTOIGNITION
MULTI-DIMENSIONAL MODELING OF THE CFR ENGINE FOR THE INVESTIGATION OF SI NATURAL GAS COMBUSTION AND CONTROLLED END-GAS AUTOIGNITION Open
Engine knock and misfire are barriers to pathways leading to high-efficiency Spark-Ignited (SI) Natural Gas engines. The general tendency to knock is highly dependent on engine operating conditions and the fuel reactivity. The problem is f…
View article: An Open-source Model for Simulation and Corrective Measure Assessment of the 2021 Texas Power Outage
An Open-source Model for Simulation and Corrective Measure Assessment of the 2021 Texas Power Outage Open
Unprecedented winter storms that hit across Texas in February 2021 have caused at least 69 deaths and 4.5 million customer interruptions due to the wide-ranging generation capacity outage and record-breaking electricity demand. While much …
View article: The COVID-19 Pandemic and Religious Travel: Present and Future Trends
The COVID-19 Pandemic and Religious Travel: Present and Future Trends Open
The COVID-19 pandemic of 2020 has had dramatic effects on both the health and economic stability of countries around the world. While several scholars and media commentators have suggested that the pandemic would be a good time to reset an…
View article: The Role of Religious Leaders in Religious Heritage Tourism Development: The Case of the Church of Jesus Christ of Latter-Day Saints
The Role of Religious Leaders in Religious Heritage Tourism Development: The Case of the Church of Jesus Christ of Latter-Day Saints Open
For centuries, people have traveled to sacred sites for multiple reasons, ranging from the performance of religious rituals to curiosity. As the numbers of visitors to religious heritage sites have increased, so has the integration of reli…
View article: Three-dimensional microstructure-explicit and void-explicit mesoscale simulations of detonation of HMX at millimeter sample size scale
Three-dimensional microstructure-explicit and void-explicit mesoscale simulations of detonation of HMX at millimeter sample size scale Open
Fully three-dimensional (3D) microstructure-explicit and void-explicit mesoscale simulations of the shock-to-detonation (SDT) process of pressed granular HMX (octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine) are performed. The overall siz…
View article: Review of: Religious Tourism in Asia: Tradition and Change through Case Studies and Narratives, by S. Yasuda, R. Raj & K. Griffin
Review of: Religious Tourism in Asia: Tradition and Change through Case Studies and Narratives, by S. Yasuda, R. Raj & K. Griffin Open
View article: Missionaries on a Pilgrimage, or Pilgrims on a Mission? Elements of Pilgrimage in The Church of Jesus Christ of Latter-day Saints Missionary Experience
Missionaries on a Pilgrimage, or Pilgrims on a Mission? Elements of Pilgrimage in The Church of Jesus Christ of Latter-day Saints Missionary Experience Open
The purpose of this paper is to consider the ways in which proselytizing missions by members of The Church of Jesus Christ of Latter-day Saints are pilgrimage-like. After outlining the historical and theological background behind the Churc…
View article: Special Issue: Art, images, symbols and pilgrimage.
Special Issue: Art, images, symbols and pilgrimage. Open
View article: Cross-validation of the Invalid Forgetting Frequency Index (IFFI) from the Test of Memory Malingering
Cross-validation of the Invalid Forgetting Frequency Index (IFFI) from the Test of Memory Malingering Open
Objective To increase sensitivity of the Test of Memory Malingering (TOMM), adjustments have been proposed, including adding consistency indices. The Invalid Forgetting Frequency Index (IFFI) is the most recently developed consistency inde…
View article: Below Chance Performance of p < .05 or p < .20: Frequency of Statistically Below Chance Scores in Dementia
Below Chance Performance of p < .05 or p < .20: Frequency of Statistically Below Chance Scores in Dementia Open
Objective A p-value of < .05 has traditionally been utilized to determine below chance performance on forced-choice performance validity tests (PVT). Recently, Binder and colleagues (2014 & 2018) proposed that the p-value cutoff increase t…
View article: The Three Dimensional Spatial Structure of Antarctic Krill Schools in the Laboratory
The Three Dimensional Spatial Structure of Antarctic Krill Schools in the Laboratory Open
Animal positions within moving groups may reflect multiple motivations including saving energy and sensing neighbors. These motivations have been proposed for schools of Antarctic krill, but little is known about their three-dimensional st…
View article: C - 50Investigation of Embedded Performance Validity Tests in the Delis-Kaplan Executive Function System Trail Making Subtest
C - 50Investigation of Embedded Performance Validity Tests in the Delis-Kaplan Executive Function System Trail Making Subtest Open
View article: Understanding Visitor Motivations to a Wayside Chapel in Brandon, Manitoba, Canada
Understanding Visitor Motivations to a Wayside Chapel in Brandon, Manitoba, Canada Open
While academics that study religious tourism tend to focus on large-scale events and sites that attract thousands and millions of people, little has been written about small-scale sites that attract very few people but are still considered…
View article: The Proliferation, Commercialization, and Secularization of the Seven Gods of Good Fortune Pilgrimages in Modern Japan
The Proliferation, Commercialization, and Secularization of the Seven Gods of Good Fortune Pilgrimages in Modern Japan Open
Osaka’s Thirteen Buddha Pilgrimage is a route through the greater Osaka area to Buddhist temples. Thirteen Buddha pilgrimage routes have experienced growth in participation over the past few years. This new popularity has increased the num…
View article: Genetic relationships between boar feed efficiency and sow piglet production, body condition score, and stayability in Norwegian Landrace pigs1
Genetic relationships between boar feed efficiency and sow piglet production, body condition score, and stayability in Norwegian Landrace pigs1 Open
Both feed efficiency and sow production are economically important traits in pig breeding. One challenge in a maternal line such as Norwegian Landrace is to breed for highly feed efficient fattening pigs and, at the same time, produce sows…
View article: Ritual Journeys in North America: Opening Religious and Ritual Landscapes and Spaces
Ritual Journeys in North America: Opening Religious and Ritual Landscapes and Spaces Open
The religious landscape of North America is different from other regions of the world in that not only is there a lack of a highly visible religious elements, but also the idea and practice of pilgrimage and ritual travel is not as pervasi…
View article: Embedded Performance Measures Within the Delis-Kaplan Executive Function System
Embedded Performance Measures Within the Delis-Kaplan Executive Function System Open
It has become increasingly clear many patients do not manifest sufficient effort over the course of a neuropsychological evaluation (Horner, VanKirk, Dismuke, Turner, & Muzzy, 2014). While tests of memory and learning are considered to be …