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1-10 of 3294 results for free trials

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Select article: Optimal Software Free Trial Strategy: Limited Version,Time‐locked,or Hybrid?

Retricted access

Research article

First published 2015-03

Optimal Software Free Trial Strategy: Limited Version,Time‐locked,or Hybrid?

Hsing Kenneth Cheng, Shengli Li, Yipeng Liu

Production and Operations Management

Select article: The Challenge of Retaining Customers Acquired with Free Trials

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Research article

First published 2015-4

The Challenge of Retaining Customers Acquired with Free Trials

Hannes Datta, Bram Foubert, Harald J. Van Heerde

Journal of Marketing Research

Select article: A surface-free design for phase I dual-agent combination trials

Open access

Research article

First published 2020-10

A surface-free design for phase I dual-agent combination trials

Pavel Mozgunov, Mauro Gasparini, Thomas Jaki

Statistical Methods in Medical Research

Select article: A model-free phase I/II dose optimization design for immunotherapy trials

Retricted access

Research article

First published 2025-7

A model-free phase I/II dose optimization design for immunotherapy trials

Yingjie Qiu, Mengyi Lu, Yan Han [...]

Statistical Methods in Medical Research

Select article: Online Retailing Operations: Is It Wise to Offer Free Sample Trial and Money-Back Guarantee Together?

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Research article

First published 2024-11

Online Retailing Operations: Is It Wise to Offer Free Sample Trial and Money-Back Guarantee Together?

Jiaxin Lin, Tsan-Ming Choi, Yong-Hong Kuo

Production and Operations Management

Select article: Effects of Intra-Trial and Inter-Trial Retention in Free Recall of Children

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Research article

First published 1977-6

Effects of Intra-Trial and Inter-Trial Retention in Free Recall of Children

Fred Frankel, Donald Guthrie

Psychological Reports

Select article: Effects of Order and Trial on Necker Cube Reversals under Free and Resistive Instructions

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Research article

First published 1971-8

Effects of Order and Trial on Necker Cube Reversals under Free and Resistive Instructions

B. B. Morris

Perceptual and Motor Skills

Select article: Variables Affecting Avoidance Conditioning in Free-Responding and Discrete-Trial Situations

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Research article

First published 1965-12

Variables Affecting Avoidance Conditioning in Free-Responding and Discrete-Trial Situations

Robert D. Fitzgerald, Judson S. Brown

Psychological Reports

Select article: What Can Children Learn from a Free Trial of Eyeglasses Use? Evidence from a Cluster‑Randomized Controlled Trial in Rural China

Open access

Research article

First published 2020

What Can Children Learn from a Free Trial of Eyeglasses Use? Evidence from a Cluster‑Randomized Controlled Trial in Rural China

Yaojiang Shi, Wei Nie, Ming Mu [...]

INQUIRY: The Journal of Health Care Organization,Provision,and Financing

Select article: Hemoadsorption during cardiopulmonary bypass to absorb plasma-free hemoglobin in patients with acute type a aortic dissection: A randomized controlled trial

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Research article

First published 2025-9

Hemoadsorption during cardiopulmonary bypass to absorb plasma-free hemoglobin in patients with acute type a aortic dissection: A randomized controlled trial

Yu Bao, XiaoJun Wang, YunFeng Zi [...]

Perfusion

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