Degree Major Emphasis Institution Year
D.P.A. Public Administration University of La Verne 2005
M.P.A. Public Administration University of La Verne 1995
B.A. Theatre Arts University of La Verne 1989

Certificate in Psychology of Leadership - Cornell University. September 2021

Orientation Residency (DPA 705)
Ethics and Social Justice (DPA 720)
Public Administration as a Profession (DPA 755)
Comprehensive Experience (DPA 780)
Comprehensive Residency (DPA 781)
Public Administration Special Topics (DPA 795)
Proposal Development and Exploration (DPA 796)
Dissertation Development (DPA 797)
Dissertation Defense (DPA 798)
Defense Residency (DPA 799)
History and Theory of Public Administration (MPA 510)
Public Sector Leadership (MPA 520)
Public Personnel Management (MPA 540)
Public Policy (MPA 570)
Urban Public Policy (MPA 575)
Organizational Theory and Behavior (MPA 590)
Professional Presentation (MPA 593)
Comprehensive Exam Seminar (MPA 594)
Political Economy (MPA 585)
Capstone Portfolio (IDS 499)
American Government (POL 213)
Executive Leadership in the Public Sector (POL 451)
Organizational Theory and Design (POL 452)
Policy Process and Analysis (POL 465)
Public Personnel Management (POL 491)
Special Topics in Public Administration (POL 490)
Principles of Public Administration (POL 493)
History of California (HIS 393)
Career and Professional Development (PST 300)
Self Defense (KIN 117)
Kickboxing and Sparring (KIN 110)

Public Administration; Andragogy; Leadership; Culture and Gender Issues, Public Policy.

Everest College:
Introduction to Marketing (1011)
English Composition I (1106)
Introduction to Business Enterprise (1030)

Hope International University:
Foundations: Strengths and Leadership Development (LDR 1100)
Interpersonal Communications (2200)

University of California Riverside
Intro to Public Policy (PBPL 001)
Politics and Public Policy (PBPL 002)
Ethics and Public Policy (PBPL 004)
Case Studies (PBPL 101)

Vanguard University
Gender and Politics (332)

University of La Verne:
Organizational Theory (PADM 531)
Managing Sustainable Communities (PADM 587)
Organizational Theory (PADM 670)
Ethics and Public Responsibility (PADM 677)
Introduction to Public Administration (PADM 332)
Ethics and Social Responsibility (333)
Culture and Gender Issues (368)
Children’s Theatre (370)
Policy Making Process (436)
Creative Drama for Teachers (470)
Business Communications (480)
Kickboxing (MSS 003)

University of West Los Angeles:
Cultural Diversity (312)

PUBLICATION:
Ahumada, Elaine. PA Times. Innovative Multi-Agency Approaches to Crimes of Exploitation. April 12, 2024

Ahumada, Elaine. PA Times. Reset the Practitioner Mindset for Career Performance and Growth. January 12, 2024

Ahumada, Elaine. PA Times. The Globally Minded Public Administrator. June 8, 2023

Ahumada, Elaine. PA Times. Advancing Professional Excellence in Preparation if the Public University Enrollment Cliff. May 12, 2023

Ahumada, Elaine, Threatt, Brenda, Hernandez, David. PA Times. Public Responsibility for Last Responder Resiliency and Recognitions. April 10, 2023

Ahumada, Elaine, Harris, Tanya S., Carthen-Jackson, Megan D. PA Times. Managing Public Sector Employees: Transparency, Accountability, and Due Process. March 10, 2023

Ahumada, Elaine, Stevens, Adrian P. PA Times. Zooming into Cultural Considerations of Remote Work. February 9, 2023

Ahumada, Elaine. PA Times. Examining the Code and Accountability of Cancel Culture in Public Service. January 12, 2023

Ahumada, Elaine, Groves, Beth, Rickman, Tracy. PA Times. The Crisis Conscious Leader-Time to Focus on Your People. March 29, 2020.

Purper, Cammy, Ahumada, Elaine, Bowning, Julianna, Pearson, MaryAnn. “Work Patterns and Job Satisfaction.” Continuing research In Progress.

Journal of Public Affairs Education (JPAE) Article Title: The Development of an MPA Major Field Test Vol. 19, 1. Winter 2012

PRESENTATIONS:

Ahumada, Elaine, Kling, Mark.” Agile project Management Theory and Dissertation Development: A Guide to study of developing an interdisciplinary doctoral research course sequence to strengthen student outcomes and build university doctoral culture in an online program.”
CCCU 2024 Council for Collaboration in Doctoral Education.
September, 2024.

Ahumada, Elaine, Bowden, Greg.” Interdisciplinarity in Doctoral Programs: A case study of developing an interdisciplinary doctoral research course sequence to strengthen student outcomes and build university doctoral culture in an online program.”
CCCU 2022 Council for Collaboration in Doctoral Education.
October, 2022.

Ahumada, Elaine. “Public Administration: Theory to Practice.” Virtual Panel Presentation. ASPA Inland Empire Chapter.
May, 2021

Ahumada, Elaine. “Nurturing Social Engagement and Exchange in Asynchronous Online Doctoral Programs.”
AAACE Conference (Virtual). October, 2020

Ahumada, Elaine “Inclusivity in Online Education; Curriculum Design, Teaching and Reflection.” AAACE Conference. Myrtle Beach, SC, October, 2018

Purper, Cammy, Ahumada, Elaine, Browning, Julie, Pearson, MaryAnn. “Work/life Balance and the Online Professor.” 2018 Advancing Women in Leadership Conference. Azusa, CA May, 2018

Ahumada, Elaine “Inclusivity in Doctoral Education; Curriculum Design, Teaching and Reflection.” National Association of Schools of Public Affairs and Administration (NASPAA). Washington DC, October, 2017

Ahumada, Elaine “Goal Setting ad Mentoring.” National Charity League. (NCL). Upland, CA. September, 2017

Ahumada, Elaine “Guest Speaker for San Bernardino Superior Court’s 2017 Graduates.” Redlands, CA, April, 2017

Ahumada, Elaine, Sundstrom, Linda, Beaumaster, Suzanne, Powell, Dave. “Online Learning Engagement: Capture to Create.” – National Association of Schools of Public Affairs and Administration (NASPAA). Columbus, Ohio. October, 2016

Ahumada, Elaine, Beaumaster, Suzanne, - “The Dissertation and Beyond: Developing Outcomes for the Public Affairs Practitioner” – Midwest Public Administration Teaching Conference. Ohio University. Columbus, Ohio. June, 2016

Ahumada, Elaine, Kling, Mark. “The Use of “Critical Incident Reflection Frameworks Through Inquiry Based Learning in Online Courses to Professionally Develop Public Sector Practitioners.”- Public Administration Teaching Conference. Rutgers University. Newark, NJ. May, 2016

Ahumada, Elaine, Beaumaster, Suzanne and Sundstrom, Linda-Marie "Dissertation and Beyond: Developing Outcomes for the Scholarly Practitioner" - Public Administration Teaching Conference. Franklin University. Columbus, Ohio. June, 2015

Ahumada, Elaine, Kircher, Pat, and Kling, Mark. "Building Community in Online and Residency Programs" - Public Administration Teaching Conference. Columbus, Ohio. June, 2015

Ahumada, Elaine “Partnering; 21st Century Employee Empowerment.”Riverside HR Conference," University California Riverside, September 24,2014.

Ahumada, Elaine “Partnering; 21st Century Employee Empowerment. ”Riverside County Fiscal Manager's Meeting, Carriage House at Crestmore Manor; Riverside, CA. July 14, 2014.

Compiled PowerPoint "Effective Online Instruction" for the Presenters at National Association of Schools of Public Affairs and Administration Conference. Washington, DC. October, 2013

Ahumada, Elaine and MaryAnn Pearson, "Working in the Public sector: Leadership, Effective Communication Strategies and Personal Branding."Riverside County Office on Aging/ Aging and Disability Resource center Staff Development Meeting. Riverside, CA December 12, 2013.

Ahumada, Elaine, Lambert, Larry, and Miller, Jeanne. "Flipped or Hybrid or Blended: Can you tell which thing is not like the others?" CaliBUG Fall eLearning Day, Blackboard's Never Stop Learning Tour. Southwestern College, Chula Vista, CA. October, 2013

Ahumada, Elaine and Kling, Mark. "MPA 2.0; The Integration of Professional Development Skills and Competencies for a Diverse Workforce" - Public Administration Teaching Conference. San Padre Island, TX. May, 2012

Ahumada, Elaine, Kircher, Pat, Jones, Paulette. "MPA Major Field Test - National Association of Public Administration and Affairs Conference (NASPAA). Austin, TX. October, 2012

Ahumada, Elaine. "Peeling the Onion on Conflict for Positive Change" - PADI Employee Workshop. Rancho Santa Margarita, CA. December, 2012

Ahumada, Elaine"College Bound" - Parent workshop (for RUSD) at Valley View Elementary and Rosemary Kennedy elementary schools. April, 2011

Ahumada, Elaine and Beaumaster, Suzanne (ULV) "The Technology Trap" - Teaching Public Administration Conference (TPAC). Co- Presenter, Williamsburg, VA May, 2011

Ahumada, Elaine"Cultural Diversity- Celebrating the Human Kaleidoscope" Riverside Neighborhood Conference, California Baptist University, Riverside, CA. June 2011.

Ahumada, Elaine. "Cultural and Generational Diversity" – Can’t We All Just Get Along?” Riverside Neighborhood Leadership Academy, City of Riverside. Riverside, CA. October 2011.

Ahumada, Elaine. "The Ins and Outs of College Admissions" - Rubidoux High School - October, 2011

Ahumada, Elaine. “Cultural and Generational Diversity – Can’t We All Just Get Along?” Neighborhood Leadership Academy, City of Riverside. Riverside, CA. October 2010.

Ahumada, Elaine. “Major Field Test for MPA programs.” NASPAA - National Association of Schools of Public Affairs and Administration. Las Vegas, NV. October 2010.

Ahumada, Elaine. “Personal Branding and Career Networking.” Community University Educational Summit. CSUSB – Palm Desert Campus. October 2009.

Ahumada, Elaine. “The Real Rules of Engagement - Processes, Protocols, and Politics That Impact Online Hybrid / Instruction.” AHEA – Adult Higher Education Alliance; National Louis University. Chicago, IL. October 2009.

Ahumada, Elaine. “A Sandwich View of Adult Programs.” CSCCU – Consortium of Southern California Colleges and Universities. March 2009. Keynote Speaker.

Ahumada, Elaine. “Professional Studies Courses That Work: Retention, Enrollments, Career Preparation, and Student Learning Outcomes.” AAACE – American Association for Adult and Continuing Education. University of Denver, Denver, CO. November 2008.

Ahumada, Elaine. “Adult Learning Strategies for Personal, Professional, and Academic Success.” AHEA – Adult Higher Education Alliance. Univ. of Southern Alabama, Mobile, AL. October 2008.

Ahumada, Elaine. “Experiential Learning for Degree Completion Students.” Fall Faculty Retreat. California Baptist University, Riverside, CA. August 2008.

Ahumada, Elaine. “Welcome to the World of Numbers – Recruitment 101.” NACCAP – North American Coalition for Christian Admissions Professionals. Biola University, La Mirada, CA. June 2007.

Ahumada, Elaine. “Personal Branding.” High Desert Women’s Expo. Victorville Fairgrounds, Victorville, CA. March 2006.

Ahumada, Elaine. “Successful Balancing Acts for the Mind, Body, and Spirit.” ACSI – Association of Christian Schools International. Anaheim Convention Center, Anaheim, CA. November 2005.

Dissertations:

Advisor/Chair for:

Hala Abdelkhalik – Perspectives on Mental Health Assessments within the Egyptian Government.
July, 2025 – California Baptist University, Riverside, CA

Olivia Sanchez – Solid waste mandates: Southern California local Jurisdiction Perspectives
July, 2025 – California Baptist University, Riverside, CA

Stanley Thompson – Understanding the Retention Issues within the Secret Service Uniformed Division through Job Embeddedness
March, 2025 – California Baptist University, Riverside, CA

Alicia Mitchell-Mercer - Regulatory Reform Amid the Civil Access to Justice Crisis: An Analysis of Lawyers’ Perspectives on Allied Legal Professionals
March, 2024- California Baptist University, Riverside, CA

Arlington Rogers - Representative Bureaucracy: An Examination of African American Male City Managers in California
December, 2023 – California Baptist University, Riverside, CA

Marcia Cameron - The Impact of the Black-Market Sale of Permits in the Borough of the Bronx.
July, 2023 – California Baptist University, Riverside, CA

Kevin Townsend – American Law Enforcement Large-Scale Organizational Change: A Convergent Mixed Method Investigation.
June, 2023 – California Baptist University, Riverside, CA

George Mills - California Community Colleges Student Centered Funding Formula on First Generation College Students at Minority Serving Institutions – An Exploration of the perspectives of student services professionals
May, 2023 – California Baptist University, Riverside, CA

Vincent Lariccia - Active Shooter Best Practices: A Connecticut Case Study
May, 2023 – California Baptist University, Riverside, CA

Lauren Rabe - Public Health Crisis and Preparation.
March, 2023 – California Baptist University, Riverside, CA

Amaka Agwaniru - ICT as a Strategy for Sustainable Small and Medium Enterprises in Nigeria
December, 2022 - California Baptist University, Riverside, CA

Edna Anfo - Workforce Collaboration Process: Perception of Regional Workforce Development Boards and Community College Partnerships
May, 2022 – California Baptist University, Riverside, CA

Rita Ohaya - Implications of Public-Private Partnership Models on Enforcing the Disadvantaged Business Enterprise Program within the Federal Highway Administration.
March, 2022 – California Baptist University, Riverside, CA

Ana Kukowski - Military Spouse Unemployment: Best Practices for Hiring. February, 2022 – California Baptist University, Riverside, CA

Belle Betkolia. Bridging the Gap: Mitigating Risk and Preserving Victim Safety. June 2021 – California Baptist University, Riverside, CA

Tarrick McGuire. The Administration of Federal Police Consent Decrees: Evaluating the Effectiveness of Reducing Pattern and Practice Through Police Reform. May, 2021 California Baptist University, Riverside, CA

Dina Schon - An Exploration of Public High School Teacher Dispositional Beliefs Regarding Teaching in a National Pandemic Environment: A Case Study. March, 2021 – California Baptist University, Riverside, CA

Anthony Williams. Water Policy and Water Conservation: Separating the Dichotomy in Fort Lauderdale. March, 2021– California Baptist University, Riverside, CA

Jay Obernolte. Evaluating the Perceived Effectiveness of Mission-Based Budgeting: A Case Study of the State of California Department of Finance. October, 2020 – California Baptist University, Riverside, CA

Heather Obernolte. Developing an Ideal Leadership Type for Political Party Leaders: A Case Study of the California Republican Party Chairman Position. October, 2020 – California Baptist University, Riverside, CA

Skyler Moore. Indian Child Welfare Act of 1978: An Analysis of Policy Implementation. September, 2020 – California Baptist University, Riverside, CA

Loretta Vandivier. Expressing a Political Agenda through Social Media: A Content Analysis of Representative Pete Aguilar’s #DearPete Social Media Campaign. September, 2020– California Baptist University, Riverside, CA

Tansy Aguilar Palencia. Employee Engagement: An Exploration of Engagement of Grant & Contract Officers- The Gamut Runners. March, 2020 California Baptist University, Riverside, CA

Michael Crawford. Exploring Workplace Wellness Programs from a Police Officer’s Perspective. February, 2020 – California Baptist University, Riverside, CA

Jason Chao. Police Leadership Post Ferguson. July, 2019 – California Baptist University, Riverside, CA

George “Rich” Austin.. Factors Leading to Civil Unrest in the Wake of Police Lethal Use of Force Incidents: A Tale of Two Cities. March, 2019 – California Baptist University, Riverside, CA

Maria Aguirre –Mendoza. Cultural Infusion in Tribal TANF Programs in California.
September, 2018 – California Baptist University, Riverside, CA

Megan Carthen-Jackson. Litigation and the Title IX Coordinator: A Look into the Effects of Litigation on the 23 CSU System Campuses After Implementation of a Title IX Coordinator.
August, 2018 – California Baptist University, Riverside, CA

Jose Rivero. Workfare Factors in the U.S.: An Analysis of Employment Attainment by TANF Job Seekers. August, 2018 – California Baptist University, Riverside, CA

Tanya Harris. Employee Engagement; The Path to Understanding the Silent Heroes of the Public Sector.
June, 2018 – California Baptist University, Riverside, CA

Creighton Goodman. United States Military Reserve 2012-2016 Operation Tempo, Organizational Commitment, and Retention.
June, 2018 – California Baptist University, Riverside, CA

Committee Member for:

Murrell, Rykiera - The Perception of TLP Managers and Coordinators Regarding Current Point-in-Time Engagement Tactics with the Minority Homeless Population of Missouri.
In progress – California Baptist University, Riverside, CA

Maurice, Mariah - Social Workers’ Perceptions of Facilitating Autonomous Decision-Making in Hospice Care.
In progress – California Baptist University, Riverside, CA

Ybarra, Juan - Exploring the Experiences and Strategies of Government Officials in Managing Water Scarcity in the Rio Grande Valley: A Qualitative Case Study.
In progress – California Baptist University, Riverside, CA

Markeisha Dawson - Exploration of Doula Maternal Health to Reduce Black Maternal Mortality Outcomes.
In progress – California Baptist University, Riverside, CA

Tiffiny Gaston - Eligibility Technicians’ Perception of Financial Requirements Under TANF Policies within Riverside County.
In progress – California Baptist University, Riverside, CA

Nicole Love - SB998 and The Water Shut-Off Policy: Analysis of Effectiveness.
April, 2025 – California Baptist University, Riverside, CA

Clark, Leticia - Beyond the Green: The Rainbow of Challenges and Triumphs in Fundraising for Women of Color in Politics.
March, 2025 – California Baptist University, Riverside, CA

Ricardo Blanco - The Community Perspective for Countering Mara Salvatrucha (MS13) Gang Recruitment within the Greater Los Angeles Area.
March, 2025 – California Baptist University, Riverside, CA

Genii Greco- Inland Regional Center: An Analysis of Organizational Communication of Policy. June, 2024 – California Baptist University, Riverside, CA

Brenda Threatt - The Effects of COVID-19 Deaths in the Funeral Industry. December, 2022 – California Baptist University, Riverside, CA

Sophie Johnson - Gaining Early Awareness and Readiness for Undergraduate Programs (GEAR UP) Cost-Share: Programmatic Benefit or Limitation?
October, 2022 - California Baptist University, Riverside, CA

Arit Asamudo- Risk Sharing and Governance through Public Private Partnerships in West Africa: Evaluating the West African Public Health Sector Experience. July, 2022
California Baptist University, Riverside, CA

Kelli Endsley - Response to Intervention and Title 1 Public Elementary School Students’ Instructional Reading Level Scores. March, 2022 – California Baptist University, Riverside, CA

Deepak Vejendia. Impact of Electronic Health Records in Patient Care. July, 2022 – California Baptist University, Riverside, CA

Ibiso David-West - Mobile Banking in Nigeria; Prospects and Challenges. January, 2002 – California Baptist University, Riverside, CA

Inonge Lifanu - An Analysis of Policy Implementation: A Case of Children with Developmental Disabilities in Zambia. October, 2021 – California Baptist University, Riverside, CA

Bryce Yokomizo. Examination of Strategic Vision Statements in Local Government. September, 2020 – California Baptist University, Riverside, CA

Monique Browning. Racial and Ethnic Minorities Accessing Government-Funded First-Episode Psychosis Programs. May, 2020 – California Baptist University, Riverside, CA

Alia Rodriguez. Patterns and Trends of Municipal Panel Interview Training. February, 2020 – California Baptist University, Riverside, CA

Nicole Birmingham-Witucki. Challenging Gaia: The Ecology of Organizational Restructuring in a Federal Agency. February, 2020 – California Baptist University, Riverside, CA

Pauline Soria The Perceived Impact of Peer Support in Addressing Burnout of 911 Emergency Dispatchers.
March, 2019 – California Baptist University, Riverside, CA

Kimberly Cox. Groundwater Sustainability of 2014; A Comparative Analysis. March, 2019 – California Baptist University, Riverside, CA

Brian Guzzetta The Social Impact of Public Safety Exploring.
June, 2018 – California Baptist University, Riverside, CA

Soheil Gityforoze. Analysis of the Relationship between Organizational Culture and Lean Six Sigma Implementation.
April, 2017 - University of La Verne, La Verne, CA

Wail Alshammari. The impact of integrating the local Saudi community in fulfilling dual objectives of the Saudi Cultural Mission to the United States of America. November, 2016 - University of La Verne, La Verne, CA

Linda Reich. San Bernardino Healthy Communities Program; Reducing Childhood Obesity in the 4th Most Obese County in the Nation Through Policy and Collaboration. April 2014 - University of La Verne, La Verne, CA

Darla Drendel. Business Networking and Civic Engagement. June 2014 - University of La Verne, La Verne, CA

Paul Akamnonu. Nigerian Presidents: An Examination of Leadership Behaviors And Leadership Outcomes
January 2014 - University of La Verne, La Verne, CA

Marzook Alotaibi. Opportunities and Barriers to Collaboration to Combat Unemployment in Saudi Arabia.
December, 2013 - University of La Verne, La Verne, CA

Irma Licea.Today’s Glass Ceiling: Executive Women’s Experiences and Perceptions Regarding Career Advancement into Executive Leadership Positions in Transportation. April 2013 - University of La Verne, La Verne, CA

Tra Pham. Vietnamese Users’ Satisfaction with E-Government Services. May, 2011 – University of La Verne, La Verne, CA

Beth Elmore. Future Change to Obtain Career Services Standards Determined by the National Association of Colleges and Employers (NACE). May, 2011 - University of La Verne, CA

John Delgado. California’s Marine Life Protection Act and the Environmental Management Policy Development Process: An Advocacy Coalition Framework Analysis. May, 2011 – University of La Verne, La Verne, CA

Maryann Pearson. What Do Journalism Students Consider The Most Effective Educational Experiences? A Phenomenological Study of Journalism Education. May 2009 - La Sierra University, Riverside, CA


Outside Reader for:

Abdul Abdulaziz. Impact of Government Policy Practices in E-Learning Educational Technology in Saudi Arabia.
April, 2013 University of La Verne, La Verne, CA

Conxita Girvent. Food Insecurity in range County: Reasons For the Underutilization of the Food Stamp Program by Latino Households. April, 2011 - University of La Verne, La Verne, CA

Nathan Chow. An Examination of the Taiwanese Government Cross-Straits Educational Barriers. November, 2010 - University of La Verne, La Verne, CA

Shirley Lewis. Impact of the Use of Electronic Health Record Systems on Patient Outcomes in Hospital Settings
May, 2010 – University of La Verne, La Verne, CA

Janis Cavanaugh. Forensic Evidence and its Credibility from the Perception of the Judges: The Value of and Accreditation of Testimony in Court
April, 2010 – University of La Verne, La Verne, CA

Ian B. Cole. The Next Generation of Public Employees: Succession Planning Implications for Customs and Border Protection
April, 2010 - University of La Verne, La Verne, CA

Joe Wang. Public Diplomacy and Organizational Conflict: a Study of Taiwanese Government Information Offices in the United States
February, 2010 - University of La Verne, La Verne, CA

Chris Hardy. Funding Priorities and the Expenditure Patterns of City if Los Angeles Neighborhood Councils. February, 2009 – University of La Verne, La Verne, CA

Pamela Wu. Implementation of Local Wellness Policy: Stakeholders Perspective. May, 2008 - University of La Verne, La Verne, CA

Robert Lewis. Inter-organizational Networks, Childhood Health Policy and the Expanded Role of the Public School District Food Service Provider. November, 2007 - University of La Verne, La Verne, CA

Jeanne Greenelsh. Role of Leadership in Institutional Advancement at California Community College Foundations: A Re-visitation of a Multiple Case Study of Five California Community College Foundations. April, 2006 - University of La Verne, La Verne, CA

New Life Community Church - Oxnard, CA

Current Board Member - Emily Shane Foundation. Malibu, CA
Inland Empire Growth and Opportunity (IEGO)
Pepperdine Parent Family Council
Past Board Member (Vice Chair) Feeding America Riverside/San Bernardino
Member - Inland Empire Chapter American Society for Public Administration
Consultant - UniverseCity Consultant (Higher ed and College Coaching)
Teaching Excellence Consultants (TEC)

I enjoy international travel, spending time with family and friends, watching documentaries, cooking new ethnic dishes, and walking with our two "morkies;" Stella and Luna.

OFFICE HOURS: Tuesday/Thursday 10am-2pm, 6-7pm

Be strong and take heart,
all you who hope in the LORD.
- Psalms 31:24 (NASB)

Enthusiasm is the mother of effort, and without it nothing great was ever achieved.
- Ralph Waldo Emerson