Implicit Pilots for an Efficient Channel Estimation in Simplified Massive MIMO Schemes with Precoding by Mário Marques da Silva, Rui Dinis, João Guerreiro

“…Since the required overheads in massive MIMO schemes can be too high, leading to spectral degradation, the use of superimposed pilots (i.e., pilots added to data) is an efficient alternative. …”
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Human SLC26A1 Gene Variants: A Pilot Study by Paul A. Dawson, Pearl Sim, David W. Mudge, David Cowley

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Transoesophageal Echocardiography for Monitoring Liver Surgery: Data from a Pilot Study by Filipe Pissarra, Antonio Oliveira, Paulo Marcelino

“…A pilot study aimed to introduce intraoperative monitoring of liver surgery using transoesophageal echocardiography (TEE) is described. …”
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Cannabis and Suicidal Behaviour Among Adolescents: A Pilot Study from Trinidad by Hari D. Maharajh, Monique Konings

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Palatalization in Ukrainian, Polish and Russian. A pilot 3D Ultrasound Study by Małgorzata E. Ćavar, Neha Nagaraj, Isabelle Amacker

“…The paper reports findings of a pilot 3D/4D ultrasound study on the articulation of palatalized coronal obstruents in Ukrainian, Polish and Russian. …”
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Elevated concentrations of quaternary ammonium compounds in childcare centers: A pilot study by Yao Cheng, Zhong Lv, Erika Schreder, Min Hu, Abby Mutic, Guomao Zheng, Amina Salamova

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Adjunctive Sitagliptin Therapy in Postoperative Cardiac Surgery Patients: A Pilot Study by Marcia L. Brackbill, Ateequr Rahman, Jeffrey S. Sandy, M. Denton Stam, Arthur F. Harralson

“…A prospective, randomized, double-blind, placebo-controlled pilot study was conducted in diabetic cardiac surgery patients. …”
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Scattering Improves Temporal Resolution of Vision: A Pilot Study on Brain Activity by Francisco J. Ávila

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Pilot application of an inflammation and physiological dysregulation index based on noninvasive salivary biomarkers by Andrey I. Egorov, William Xue, Jason Kobylanski, Miyu Fuzawa, Shannon M. Griffin, Timothy J. Wade, Michael Nye

“…We evaluated seven salivary biomarkers of neuroendocrine and immune functions and a group index of physiological dysregulation based on these biomarkers in a pilot survey in a socioeconomically disadvantaged population. …”
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Smart oxygen monitoring in hospitals: a pilot study during COVID-19 by Jan Velicka, Martin Pies, Radovan Hajovsky, Katerina Barnova, Radek Martinek

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Pilot Study of Trace Elements in the Infusion of Medicinal Plants Used for Diabetes Treatment by Eid I. Brima, Saifeldin M. Siddeeg

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Reliability of Positive and Negative Life Experiences Reported by Inmates: A Pilot Study by Cristina Fernandes, Ângela Maia, Tânia Gonçalves, Vanessa Azevedo

“…The results from this pilot study may be informative and inspiring for further studies.…”
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Pilot study of a ketogenic diet in bipolar disorder: a process evaluation by Benjamin P. Rigby, Nicole Needham, Helen Grossi, Ivana Kamenska, Iain H. Campbell, Ben Meadowcroft, Frances Creasy, Cheryl Fisher, Pankaj Bahuguna, John Norrie, Gerard Thompson, Melissa C. Gibbs, Maja Mitchell-Grigorjeva, Ailsa McLellan, Tessa Moses, Karl Burgess, Rachel Brown, Michael J. Thrippleton, Harry Campbell, Daniel J. Smith, Sharon A. Simpson

“…Findings are reported post-hoc, following the analysis and publication of the main pilot study findings. Reporting was guided by the COREQ checklist. …”
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Fingerprint abnormalities in systemic sclerosis: Results of a single center pilot study by Kodishala Chanakya, Liza Rajasekhar

“…There was no association of FP abnormalities with digital vasculopathy. Conclusions: In this pilot study, we found that fingerprint abnormalities occur frequently in SSc patients. …”
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Melatonin Secretion Pattern in Critically Ill Patients: A Pilot Descriptive Study by Yuliya Boyko, René Holst, Poul Jennum, Helle Oerding, Miki Nikolic, Palle Toft

“…This may be associated with higher morbidity and mortality. The aims of this pilot study were (1) to describe melatonin secretion in conscious critically ill mechanically ventilated patients and (2) to describe whether melatonin secretion and sleep patterns differed in these patients with and without remifentanil infusion. …”
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Statistical-based detection of pilot contamination attack for NOMA in 5G networks by Dalia Nashat, Sahar Khairy

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Pilot Design for Sparse Channel Estimation in Large-Scale MIMO-OFDM System by Chao Xu, Jianhua Zhang, Mengmeng Liu, Changchuan Yin

“…Based on this conclusion, this paper proposes a pilot design algorithm based on alternating projection and obtains a nonorthogonal pilot pattern. …”
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Nutritional Status of Children with Attention Deficit Hyperactivity Disorder: A Pilot Study by Joy Y. Kiddie, Margaret D. Weiss, David D. Kitts, Ryna Levy-Milne, Michael B. Wasdell

“…Objectives. This is a pilot study of the dietary intake and nutrient status of children with Attention Deficit Hyperactivity Disorder (ADHD). …”
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Bedside Teaching in Undergraduate Surgical Education: A Pilot Study of Students’ Perspective by Mohammed Alfehaid

“…In recent years, studies have shown that this tool has witnessed gradual deterioration due to various reasons. Hence this pilot study was conducted to assess the students’ perspective about this tool and suggest remedies for the deficiencies. …”
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Randomized Controlled Pilot Study Testing Use of Smartphone Technology for Obesity Treatment by Jerilyn K. Allen, Janna Stephens, Cheryl R. Dennison Himmelfarb, Kerry J. Stewart, Sara Hauck

“…The major goal of this pilot study was to evaluate the feasibility, acceptability, and preliminary efficacy of theoretically based behavioral interventions delivered by smartphone technology. …”
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