Digital Commons Network^™

Hybrid Zone Barriers Comparative Data Set, David L. Field

Research Datasets

Many recent studies have addressed the mechanisms operating during the early stages of speciation, but surprisingly few studies have tested theoretical predictions on the evolution of strong reproductive isolation (RI). To help address this gap, we first undertook a quantitative review of the hybrid zone literature for flowering plants in relation to reproductive barriers. Then, using Populus as an exemplary model group, we analysed genome-wide variation for phylogenetic tree topologies in both early- and late-stage speciation taxa to determine how these patterns may be related to the genomic architecture of RI. Our plant literature survey revealed variation in barrier complexity …

Investigating The Spatial And Statistical Dimensions Of Mortuary Choice In The Historical-Period Old City Cemetery In Roslyn, Washington, Sarah Rain Hibdon

All Master's Theses

The historical-period Old City Cemetery in Roslyn, Washington contains individuals from diverse social backgrounds and exhibits considerable variation in mortuary expression. As such, the Old City Cemetery offers a unique opportunity to explore potential differences in social group mortuary practices spatially and statistically. Using burials in Roslyn’s Old City Cemetery, this project developed a methods framework to assess mortuary practice through demographics, burial location, and monument/plot attributes. I tested correlations between demographics and mortuary expression using spatial-statistical cluster analysis (Ripley’s K-Function), spatial density analysis (Kernel Density Estimation), and non-spatial statistical significance assessments (Factor analysis and Pearson’s R), and identified …

Sampling The Local Fare: Fishes At The Sam Israel House Pit (45gr76), Soap Lake, Washington, Adam Fruge

All Master's Theses

The Sam Israel site is a precontact archaeological complex with numerous fish bones at the north end of Soap Lake, Washington. Excavated in 1976, the fish remains recovered from there were never fully analyzed prior to this research. Since this inland Columbia Plateau site had thousands of fish bones, it contained untapped potential for our understanding of ancient local fish procurement. As such, I conducted a detailed analysis of 2,862 fish bone specimens from the Sam Israel House Pit locus to: study a larger sample of fish bones in greater detail than was done before; compare the distribution of fishes …

The Economic Impact Of Forest Harvest Practices On Washington State Park Visitation, Tyler Humphries

All Master's Theses

Washington State receives timber contributions from 34 out of its 39 counties, making it a top producer of timber in the United States. Because of the widespread and abundant number of harvests, many forests that society values are affected via diminished aesthetic appeal. Of these affected areas are Washington State Parks and the areas around them. This study seeks to estimate the economic impact that forest harvest practices have on the visitation of Washington State Parks. Through the use of GIS and fixed effect regression analysis, I estimate the impact that over 100,000 permitted forest cuts have on the visitation …

Love And Loss In Willa Cather’S Novels, Sara Abbazia

English Honors Papers

Past scholars of Willa Cather, the American writer known for her novels describing life on the frontier, go to great lengths to explore how colonial settlement, loss, and queerness play their separate parts in her narratives. This analysis seeks to go further and examine how these elements intermingle under the influence of nostalgia. The two works that are analyzed, A Lost Lady and The Professor's House , feature main characters who experience the loss of a queer relationship and who try to regain their lost happiness through a nostalgic indulgence in pastoral memories. These memories, however, are inaccurate, and often …

The Political Process Of Preemption, Paul A. Diller

University of Richmond Law Review

Preemption, particularly of the state-city variety, has become a hot topic. State legislatures in many states over the last decade have preempted a wide swath of areas in which cities and counties were previously free to govern. In addition to the sweeping nature and frequency of preemption, the increasingly aggressive methods of enforcing preemption have drawn notice. The threat of fiscal penalties, removal of local officials from office, and even criminal sanctions constitute what one scholar has dubbed the phenomenon of “hyper preemption.”

Structural And Ecological Characteristics Of Mixed Broadleaved Old-Growth Forest (Biogradska Gora - Montenegro), Milic Curovic, Velibor Spalevic, Paul Sestras, Renzo Motta, Catalina Dan, Matteo Garbarino, Alessandro Vitali, Carlo Urbinati

Turkish Journal of Agriculture and Forestry

Biogradska Gora National Park in Montenegro is part of the Dinaric Mountains mixed forest, which belongs to the montane region of the Dinaric Alps. This paper presents some of the main structural and ecological characteristics of the mixed broadleaved old-growth forest with beech [Fagus moesiaca (Domin, Maly) Czecz.], sycamore maple (Acer pseudoplatanus L.) and European ash (Fraxinus excelsior L.) from the preserve area of the Biogradska Gora. These forest ecosystems are characterized by the high species richness and potential productivity. In the study area, 58 vascular plant species were recorded in 4 sample plots of 0.25 ha each. The average …

Evaluation Of The Relationship Between Land Use And Water Quality In Kittitas County, Wa, Lindsay Schulz

All Master's Theses

Water in Kittitas County is extremely valuable since it supports farming, recreation, and cultural activities, as well as environmental processes and a diversity of biological life while providing many ecosystem services. However, land conversions required by agricultural and urban land uses can negatively impact water quality and the biological function of the stream. I studied how forested, agricultural, and urban land use affect six streams. Fourteen sites were sampled, once each in July, August, and September 2019. Land use was calculated as a percentage of forested, agricultural, and urban land use within a 100-m buffer of the stream, upstream of …

Glaciernet: A Deep-Learning Approach For Debris-Covered Glacier Mapping, Zhiyuan Xie, Umesh K. Haritashya, Vijayan K. Asari, Brennan W. Young, Michael P. Bishop, Jeffrey S. Kargel

Electrical and Computer Engineering Faculty Publications

Rising global temperatures over the past decades is directly affecting glacier dynamics. To understand glacier fluctuations and document regional glacier-state trends, glacier-boundary detection is necessary. Debris-covered glacier (DCG) mapping, however, is notoriously difficult using conventional geospatial technology methods. Therefore, in this research for automated DCG mapping, we evaluate the utility of a convolutional neural network (CNN), which is a deep learning feed-forward neural network. The CNN inputs include Landsat satellite images, an Advanced Land Observation Satellite (ALOS) digital elevation model (DEM) and DEM-derived land-surface parameters. Our CNN based deep-learning approach named GlacierNet was designed by appropriately choosing the type, number …

It's A Small World After All: Exploring Mobile Dating Application Use And Sexual Partner Networks Among Black Men Who Have Sex With Men (Bmsm), Donovan Williams

Electronic Theses and Dissertations, 2020-2023

Research supports risky sexual behaviors are especially pervasive traits in high risk groups such as gay and bisexual men; and despite representing a mere 12% of the total LGBTQ population, Black men who have sex with men (BMSM) are at highest risk for transmitting and contracting HIV and other non-HIV sexually transmitted diseases. Even knowing this, the disparity of research coverage of BMSM compared to White MSM is staggering. Recent research has indicated MSM are at even greater risk than before since the advent of mobile dating apps. Online partnering via mobile apps has been linked to overlapping sexual partner …

Identification Of Novel Antimalarials From Natural Product Inspired Libraries, David Perry

Electronic Theses and Dissertations, 2020-2023

To identify novel antimalarials from unexplored areas of chemical space, we have utilized two approaches: (a) using Torrey Pines Institute for Molecular Studies (TPIMS) proprietary high-density combinatorial libraries containing a large number of small molecule compounds residing largely in the underexplored areas of chemical space; and, (b) using novel, complexity-to-diversity/ring distortion of available natural products. The first approach involved the screening of more than 30 million compounds derived from 81 small molecule libraries, built on 81 distinct scaffolds. From this, we identified the pyrrolidine bis-cyclic guanidine library (TPI-1955) to be one of the most active and selective for antiplasmodial activity. …

Collaborative Governance And Stakeholder Participation In The Colorado River Basin: An Examination Of Patterns Of Inclusion And Exclusion, Surabhi Karambelkar, Andrea K. Gerlak

Natural Resources Journal

The Colorado River Basin has a long history of conflict among water users that covet its limited supply. However, with an unprecedented drought and dwindling water supplies in key reservoirs, conflict has given way to collaboration as the strategy of choice in addressing water issues. In keeping with the decentralized management system in the Basin, numerous collaborative venues have been created to address emerging water issues; yet, there is limited information on the pattern of stakeholder participation in these venues. Understanding who is included and excluded from the decision-making process is vital for forging collaborative solutions that are fair, equitable, …

The Long View Of The Water/Energy Nexus: Hydropower’S First Century In The U.S.A., Carl J. Bauer

Natural Resources Journal

This paper offers a historical overview of the first century of hydropower in the US from today’s perspective of the water/energy nexus. Hydropower emerged as a technology in the 1880s and its development expanded until large dam building ended in the US in the 1970s-1980s. I summarize the century from the two different angles of the water sector and the electric power sector, as the roles and strategic importance of hydropower changed dramatically in the two sectors, in the parallel histories of water development and electric power development. The paper emphasizes the electricity side of the hydropower story because the …

The Invisible Wall: Public Charge Policy Impacts On Immigrant Families, Claire R. Thomas

NYLS Law Review

No abstract provided.

The Monster In The Corner Of The Map: Russian Visitors Describe Nature On Sakhalin Island (1850-1905), Sharyl Corrado

All Faculty Open Access Publications

This article examines evolving constructions of nature on Sakhalin Island in late imperial Russia, emphasising changing Russian views of not only the island, but of science, modernisation, mankind's power over nature and the borders of the empire. From a European land of plenty in the 1850s, welcoming to its Russian visitors, after a quarter-century of penal colonisation, the island had become a monster devouring its prey. This article argues that contradictory and evolving descriptions of Sakhalin's nature reflect tensions Russians faced in a modernising world, as they questioned the relationship between mankind and nature; the reliability of science; and the …

Synergies And Competition: Export Survival In Africa And Latin America, Luisa Blanco, Jesse Mora, Michael Olabisi, James E. Prieger

All Faculty Open Access Publications

Using firm-level export data from six African (Burkina Faso and Senegal) and Latin American (Guatemala, Mexico, Peru, and Uruguay) countries, we examine factors that determine the survival of export flows. We explore the effects on export survival of changes in the number of home-country exporters serving the same destination, firm-level export diversification, and country-level factors. Unlike previous studies, we find that export survival rates decrease with the number of co-exporters selling the same product to the same country. We also find that the relationship between firm-level product diversification and export flow survival is hump-shaped: firms that do not diversify or …

การศึกษารูปแบบชุดสีทางสถาปัตยกรรมในพื้นที่เมืองเก่าสงขลา, ณัฐกานต์ ประเสริฐสุข

Chulalongkorn University Theses and Dissertations (Chula ETD)

พื้นที่เมืองเก่าเป็นสถานที่ที่แสดงถึงอัตลักษณ์ที่สืบต่อกันมาอย่างยาวนานของประเทศไทยโดยเฉพาะงานสถาปัตยกรรม ที่ปัจจุบันเกิดความทรุดโทรมไปตามกาลเวลา การปรับปรุงสีอาคารเป็นวิธีการหนึ่งที่ทำได้ง่ายและใช้งบประมาณน้อยกว่าวิธีอื่น ซึ่งการเลือกใช้สีและวัสดุให้มีความเหมาะสมนั้นเป็นสิ่งสำคัญ งานวิจัยนี้มีวัตถุประสงค์เพื่อศึกษาและรวบรวมชุดสีองค์ประกอบทางสถาปัตยกรรมของอาคารพาณิชย์ที่แสดงถึงอัตลักษณ์และลักษณะความกลมกลืนทางด้านสีของพื้นที่เมืองเก่าสงขลา โดยเก็บข้อมูลด้วยระบบดิจิตอลจากภาพถ่ายอาคารผ่านโปรแกรม Adobe Photoshop CS6 เพื่อหาค่าความถี่ของสีจากอาคารจำนวน 523 หลัง บนถนนหลักทั้ง 3 เส้นของเมืองเก่าสงขลา ผลแสดงให้เห็นว่าสีเทา สีขาวและสีน้ำตาล เป็นสีที่มีการใช้ในองค์ประกอบอาคารมากที่สุด โดยเมื่อนำมาวิเคราะห์ร่วมกับสถานที่สำคัญในพื้นที่ทำให้ทราบถึงชุดสีที่แสดงถึงอัตลักษณ์ ได้แก่ สีขาว สีเทาอ่อนที่มีการเจือด้วยสีฟ้า สีเทากลางและสีแดง นอกจากนี้ยังพบว่าค่าความสดของสีอาคารส่วนใหญ่อยู่ในช่วงร้อยละ 0-20 มีค่าความสว่างของสีอยู่ในช่วงกว้างตั้งแต่ร้อยละ 21-100 และชุดสีที่มีการใช้มากที่สุดคือการใช้สีเดียว (Monochrome) การใช้สีคู่ตรงข้าม (Complementary) และการใช้สีที่อยู่ใกล้เคียงกัน (Analogous) ตามลำดับ งานวิจัยนี้ได้ผนวกทิศทางของแสงและตำแหน่งอาคารมาใช้ร่วมกับการเก็บค่าสีอาคาร โดยช่วยให้ได้ค่าสีที่มีความใกล้เคียงกับสีอาคารในภาพถ่ายมากขึ้น และยังเป็นแนวทางในการเลือกใช้สีให้กับเจ้าของอาคารและหน่วยงานที่ต้องการส่งเสริมภาพลักษณ์ในพื้นที่ ในท้ายที่สุดงานวิจัยชิ้นนี้ได้เสนอให้มีการเก็บค่าสีจากมุมสูงของพื้นที่ และการวิเคราะห์ค่าสีและค่าความสดของสี ร่วมกับทิศทางของแสงและตำแหน่งอาคารอย่างมีประสิทธิภาพ

สถานการณ์ของความโกรธกับมุมมองเชิงพื้นที่ของผู้ขับรถยนต์และการเกิดอุบัติเหตุทางรถยนต์ในกรุงเทพมหานคร, ชัญญาณ์ภัช ทิพพาบุญ

Chulalongkorn University Theses and Dissertations (Chula ETD)

วิทยานิพนธ์เรื่องสถานการณ์ของความโกรธกับมุมมองเชิงพื้นที่ของผู้ขับรถยนต์ และการเกิดอุบัติเหตุทางรถยนต์ในกรุงเทพมหานครมีวัตถุประสงค์หลักเพื่อศึกษาอารมณ์โกรธ และการแสดงออกขณะที่โกรธของผู้ขับรถยนต์ภายใต้สถานการณ์ต่างๆบนท้องถนน มุมมองเชิงพื้นที่ของผู้ขับรถยนต์ภายใต้ภาวะอารมณ์โกรธ และความสัมพันธ์ระหว่างอารมณ์โกรธและการเกิดอุบัติเหตุทางรถยนต์บนท้องถนนโดยอาศัยกรอบแนวคิดทฤษฎีสังคมวิทยาอารมณ์ ทฤษฎีการปฏิสัมพันธ์เชิงสัญลักษณ์ แนวคิดการผลิตพื้นที่ มุมมองต่อพื้นที่ และแนวคิดเกี่ยวกับอุบัติเหตุ โดยใช้วิธีการวิจัยเชิงคุณภาพแบ่งออกเป็น 2 ระยะ ได้แก่ ระยะที่ 1 การสังเกตการณ์ขณะขับรถยนต์และสัมภาษณ์เชิงลึกโดยใช้กรณีศึกษาจำนวน 20 คน และระยะที่ 2 การสังเกตการณ์ผ่านกล้องบันทึกภาพในรถยนต์ โดยใช้กรณีศึกษาที่คัดเข้าจากระยะที่ 1 จำนวน 10 คน ซึ่งเป็นผู้ขับรถยนต์ที่มีความสามารถในการถ่ายทอดความรู้สึกและถ่ายทอดความคิดในสถานการณ์ธรรมชาติได้ดี ทำการวิเคราะห์ข้อมูลโดยการวิเคราะห์เรื่องเล่าจากข้อความและภาพของกรณีศึกษาด้วยการวิเคราะห์ความเชื่อมโยงระหว่างผู้ขับรถยนต์และบริบทต่างๆ ผลการศึกษา พบว่า สถานการณ์ที่เฉพาะเจาะจงและพฤติกรรมที่เกิดจากการกระทำของผู้ขับรถยนต์มีผลต่อการเกิดอุบัติเหตุทางรถยนต์ในกรุงเทพมหานคร โดยที่ความโกรธและการแสดงความโกรธของผู้ขับรถยนต์เกี่ยวข้องทางอ้อม ความโกรธที่เกิดขึ้นบนถนนประกอบด้วยองค์ประกอบหลัก คือสถานการณ์ ตัวตน และสัญญะที่เกิดจากการการปฏิสัมพันธ์ที่มีผลในการเป็นตัวจุดชนวน เพิ่ม ลด หรือหยุดความโกรธได้ และมีองค์ประกอบรองคือมุมมองของพื้นที่ เพราะอารมณ์โกรธเป็นกระบวนการผลิตที่ถูกผลิตสร้างจากการใช้พื้นที่ที่เกิดขึ้นจากการรับรู้พื้นที่ถนนที่แตกต่างกัน การให้ความหมายของพื้นที่ที่แตกต่างกัน และการใช้รถใช้ถนนที่แตกต่างกันในการปฏิสัมพันธ์กับคนอื่นของผู้ขับรถยนต์จนถูกผลิตสร้างจิตสำนึกในการใช้พื้นที่และการใช้รถใช้ถนนขึ้น ดังนั้นผู้ขับรถยนต์จึงมีการใช้ตัวตนของตนเองในการตีความ และตัดสินทั้งสถานการณ์และบุคคลอื่นในทุกพื้นที่ที่ใช้งานและแสดงตัวตนนั้นออกมาผ่านการกระทำที่ล้วนแสดงให้เห็นถึงบริบทบนท้องถนนของผู้ขับรถยนต์ในกรุงเทพมหานค

Feasibility Study Of Business Expansion By The Exploitation Through Existhing Strength In A Construction Company, Gornekhun Jarupornpanich

Chulalongkorn University Theses and Dissertations (Chula ETD)

A construction company that is called Company-A in this paper has been facing financial difficulty due to irregular cash flow which makes huge risks to the company. To reduce the risks, this study aims to expand the business to real estate to earn regular inflows in return by the exploitation through existing strength as a construction company to increase a competitive advantage to the extended business. This study is conducted by different sources of literature and data collection including academic papers, and the needed data to do a business strategy of a chosen real estate project, and to run a …

Youths' Participation In Agriculture For Enhancing Sustainable Livelihoods: A Case Study Of Pa-O Self-Administered Zone In Southern Shan State, Myanmar, Khine Zin Yu Aung

Chulalongkorn University Theses and Dissertations (Chula ETD)

Myanmar in which 70 percent of the population is rural people relies on agricultural sector for its economy. It contributes about 37.8 percent of the country's GDP and employs about 50 percent of the labors (FAO, 2020). However, Myanmar's agricultural sector is not well developed and does not stand as reliable livelihood for the people, especially for the youths, in rural areas. Hence, the people in rural areas have to seek more livelihood opportunities like leaving their farmlands and moving to other places for work. This situation has impact both on youths and on the agricultural sector which needs youths' …

Designing Multimodal Feedback Experiences, Dan Martin

English Faculty Scholarship

In higher education, feedback is an effective but underappreciated teaching tool that expands students’ opportunities for learning. Students need more formative feedback that can lead to dialogic experiences, and they need more feedback experiences in different mediums and modes. Providing students with multimodal feedback that is formative may lead to more dialogic experiences for students and improve their learning. Multimodal feedback experiences benefit all students, including those from diverse and disabled communities. This paper examines some of the advantages and limitations of written, audio, and video feedback and argues that feedback that is primarily formative and delivered using multiple modes …

Narrowing English Leaner (El) Achievement Gaps: A Multilevel Analysis Of An El-Infused Teacher Preparation Model, Nirmal Ghimire

Electronic Theses and Dissertations, 2020-2023

This non-experimental correlational study assessed the effectiveness of a model of teacher preparation that infuses a focus on teaching English learners, the One-Plus model, by examining pre-service teachers' (PST) effectiveness in narrowing English learner achievement gaps during their final student teaching experience. The study spanned five semesters of internship data, exploring how each semester's PST effectiveness changed over time. This study utilized teacher work sample data that interns collected and submitted to the institutional effectiveness division of the college, with an n of 20,809 K-12 students who attended the 768 One-Plus PSTs' classes during their semester-long internship. The results showed …

“I Do Not Feel I Am A Piece Of Property To Be Bought And Sold Irrespective Of My Wishes:” Athlete Activism And The Sociocultural Impact Of Curt Flood’S Lawsuit Against Major League Baseball, Luka Green

Pomona Senior Theses

In January 1970, St. Louis Cardinals outfielder Curt Flood filed a suit against MLB Commissioner Bowie Kuhn, protesting the Reserve Clause in Major League Baseball that did not allow players the right to negotiate contract terms with any team but their current one. In doing so, he cemented his status as a divisive figure in baseball, the media, and with the general public. One of the primary reasons for such an extreme reaction was Flood’s rhetoric surrounding the case, as he repeatedly invoked slavery and other forms of peonage when describing the working conditions of professional baseball players. This sparked …

Proposta De Estrada Nuevo Italia-Puerto Breu, Ucayali, Perú, M. Riley Place, David S. Salisbury, B. Zizzamia

Geography and the Environment Maps

Proposta de Estrada Nuevo Italia-Puerto Breu, Ucayali, Perú.

Carretera Propuesta Nuevo Italia-Puerto Breu, Ucayali, Perú, M. Riley Place, David S. Salisbury, B. Zizzamia

Geography and the Environment Maps

Carretera Propuesta Nuevo Italia-Puerto Breu, Ucayali, Perú.

The Influence Of Flooding On Macroinvertebrate Diversity Of The James River Rock Pools, Meghan Leber

Honors Theses

Biodiversity within an ecosystem can be greatly influenced by environmental disturbances, such as fires, flooding, or other extreme events. Studying the effects of these disturbances on species diversity can be complicated though, due to difficulties tracking species-level responses and isolating the effects of disturbances. Model systems in community ecology, such as rock pools, are a beneficial way to scale down the study of disturbances in discrete communities without losing the ability to analyze important influences or interactions. In this study, macroinvertebrates within the James River rock pools were surveyed to investigate seasonal and annual differences in species richness and diversity, …

Cryptic Diversity Among Yazoo Darters (Percidae: Etheostoma Raneyi) In Disjunct Watersheds Of Northern Mississippi, Ken A. Sterling, Stuart V. Nielsen, Andrew J. Brown, Melvin L. Warren, Brice P. Noonan

Faculty and Student Publications

© Copyright 2020 Nasser et al. The Yazoo Darter, Etheostoma raneyi (Percidae), is an imperiled freshwater fish species endemic to tributaries of the Yocona and Little Tallahatchie rivers of the upper Yazoo River basin, in northern Mississippi, USA. The two populations are allopatric, isolated by unsuitable lowland habitat between the two river drainages. Relevant literature suggests that populations in the Yocona River represent an undescribed species, but a lack of data prevents a thorough evaluation of possible diversity throughout the range of the species. Our goals were to estimate phylogenetic relationships of the Yazoo Darter across its distribution and identify …

2020-January-01-Dr Ingrid Luffman Honored With Distinguished Alumni Award, University Marketing And Communication, East Tennessee State University

ETSU News

JOHNSON CITY – Dr. Ingrid Luffman, an assistant professor in the Department of Geosciences at East Tennessee State University, was recently honored with a 2019-2020 Distinguished Alumni Award from the Department of Geography at the University of Tennessee-Knoxville.

Luffman, who graduated from UTK in 2013 with a Ph.D. in geography with a concentration in spatial analysis and watershed dynamics, received the award in the Early Career category for individuals who graduated within the past 10 years.  Awards are also given in Mid-Career (10-25 years since graduation) and Lifetime (more than 25 years since graduation) categories.

“The award is a great …

Religious Culture Of The Crusader Kingdoms, Veronica Eva Szoke

Honors Program Theses

The geography of the crusader states cultivated their unique religious culture, which developed from the mix of Catholic and Holy Land traditions into a distinct combination that did not exist anywhere else in the medieval world.

Transitions From Telephone Surveys To Self-Administered And Mixed-Mode Surveys: Aapor Task Force Report, Kristen M. Olson, Jolene Smyth, Rachel Horwitz, Scott Keeter, Virginia Lesser, Stephanie Marken, Nancy A. Mathiowetz, Jaki S. Mccarthy, Eileen O'Brien, Jean D. Opsomer, Darby Steiger, David Sterrett, Jennifer Su, Z. Tuba Suzer-Gurtekin, Chintan Turakhia, James Wagner

Department of Sociology: Faculty Publications

Telephone surveys have been a ubiquitous method of collecting survey data, but the environment for telephone surveys is changing. Many surveys are transitioning from telephone to self-administration or combinations of modes for both recruitment and survey administration. Survey organizations are conducting these transitions from telephone to mixed modes with only limited guidance from existing empirical literature and best practices. This article summarizes findings by an AAPOR Task Force on how these transitions have occurred for surveys and research organizations in general. We find that transitions from a telephone to a selfadministered or mixed-mode survey are motivated by a desire to …