John F B Bolte

John F B Bolte
The Hague University of Applied Sciences / National Institute for Public Health and the Environment (RIVM) · Smart Sensor Systems group

PhD

About

56
Publications
9,468
Reads
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1,316
Citations
Introduction
As a professor at The Hague University of Applied Sciences (Dutch: lector aan de Haagse Hogeschool), I chair the Smart Sensor Systems group which researches and develops mobile and smart autonomous sensor networks and systems. The group focusses on: measurement of Environmental Exposure and Effects (men, animals and plants); Occupational Safety and Smart Maintenance; and Big Data and Internet of Things. At RIVM, I work on wearable sensors in the Innovative Monitoring project.
Additional affiliations
September 2016 - present
The Hague University of Applied Sciences
Position
  • Professor (lector)
January 2013 - present
National Institute for Public Health and the Environment (RIVM)
Position
  • Senior Researcher
June 2002 - December 2012
National Institute for Public Health and the Environment (RIVM)
Position
  • Senior Researcher

Publications

Publications (56)
Article
New measurement methods and equipment for correct 5G New Radio (NR) electromagnetic field (EMF) in-situ exposure assessment of instantaneous time-averaged exposure (Eavg) and maximum extrapolated field exposure (Emax) are proposed. The different options are investigated with in-situ measurements around 5G NR base stations (FR1) in different countri...
Article
Full-text available
The full potential of predictive maintenance has not yet been utilised. Current solutions focus on individual steps of the predictive maintenance cycle and only work for very specific settings. The overarching challenge of predictive maintenance is to leverage these individual building blocks to obtain a framework that supports optimal maintenance...
Preprint
Full-text available
Background. Particulate matter (PM) exposure is an important health risk, both in daily life and in the workplace. It causes respiratory and cardiovascular diseases and results in 800,000 premature deaths per year worldwide. In earlier research, we assessed workers’ information needs regarding workplace PM exposure, the properties and effects of PM...
Article
Full-text available
Electromagnetic fields, or EMF, are ubiquitous in our daily life. Extremely low frequency magnetic fields (ELF MF) are generated by any device using electric current. Especially in workplace situations involving MRI scanners, welding equipment, induction heaters, and power plants, they are known for potentially high field strengths. These high fiel...
Article
The estimation of the pose of a differential drive mobile robot from noisy odometer, compass, and beacon distance measurements is studied. The estimation problem, which is a state estimation problem with unknown input, is reformulated into a state estimation problem with known input and a process noise term. A heuristic sensor fusion algorithm solv...
Article
The main objective of the study is to determine if non-specific physical symptoms (NSPS) in people with self-declared sensitivity to radiofrequency electromagnetic fields (RF EMF) can be explained (across subjects) by exposure to RF EMF. Furthermore, we pioneered whether analysis at the individual level or at the group level may lead to different c...
Article
Full-text available
Background: Everyday exposure to radiofrequency electromagnetic fields (RF-EMF) emitted from wireless devices such as mobile phones and base stations, radio and television transmitters is ubiquitous. Some people attribute non-specific physical symptoms (NSPS) such as headache and fatigue to exposure to RF-EMF. Most previous laboratory studies or s...
Conference Paper
Full-text available
Blootstelling aan geluid, UV-straling en fijnstof leiden langzaam tot chronische gezondheidseffecten zoals doofheid, huidkanker of verminderde longfunctie. Monitoren met eenvoudige, draagbare sensoren leidt tot meer inzicht in de blootstellingsmomenten op de werkplek. Om de interpretatie en bruikbaarheid van de monitoringsdata te bepalen is een pil...
Article
Personal exposure measurements of radio frequency electromagnetic fields are important for epidemiological studies and developing prediction models. Minimizing biases and uncertainties and handling spatial and temporal variability are important aspects of these measurements. This paper reviews the lessons learnt from testing the different types of...
Article
There is continuing scientific debate and increasing public concern regarding the possible effects of electromagnetic fields (EMF) on general population‘s health. To date, no epidemiological study has investigated the possible association between actual and perceived EMF exposure and non-specific physical symptoms (NSPS) and sleep quality, using bo...
Article
The aim of this study was to investigate the association between exposure to extremely low frequency magnetic fields (ELF MF), or power frequency fields, and non-specific physical symptoms (NSPS). In a cross-sectional study, personal exposure to ELF MF was measured for 99 adults selected in and around Amsterdam, the Netherlands in 2009-2010. They w...
Article
As technology progresses, so does the concern about the potential health impacts on humans and biodiversity that go in hand with technological development. Emerging new impacts that are characteristic of the anthropocene require more attention in current life cycle assessment (LCA), a framework in which many relevant impact assessment models are st...
Article
Full-text available
Idiopathic Environmental Intolerance (IEI) attributed to electromagnetic fields (EMF) refers to self-reported sensitivity mainly characterised by the attribution of non-specific physical symptoms to low-level EMF exposure emitted from sources such as mobile phones. Scientific studies have not provided evidence for the existence of IEI-EMF, but thes...
Article
Full-text available
Abstract Organisms are exposed to electromagnetic fields from the introduction of wireless networks that send information all over the world. In this study we examined the impact of exposure to the fields from mobile phone base stations (GSM 900 MHz) on the reproductive capacity of small, virgin, invertebrates. A field experiment was performed expo...
Article
In five countries (Belgium, Switzerland, Slovenia, Hungary, and the Netherlands), personal radio frequency electromagnetic field measurements were performed in different microenvironments such as homes, public transports, or outdoors using the same exposure meters. From the mean personal field exposure levels (excluding mobile phone exposure), whol...
Article
Knowledge of the exposure to radiofrequency electromagnetic fields is necessary for epidemiological studies on possible health effects. The main goal of this study is to determine the exposure level and spatial and temporal variances during 39 everyday activities in 12 frequency bands used in mobile telecommunication and broadcasting. Therefore, 24...
Article
In the past 5 years radiofrequency personal exposure meters have been used to characterize the exposure during daily activities. We found from calibration tests for the 12 frequency bands of the EME Spy 121 exposimeter in a Gigahertz Transverse Electromagnetic cell and an Open Area Test Site, that these measurements tend to underestimate the actual...
Article
Full-text available
Evidence about a possible causal relationship between non-specific physical symptoms (NSPS) and exposure to electromagnetic fields (EMF) emitted by sources such as mobile phone base stations (BS) and powerlines is insufficient. So far little epidemiological research has been published on the contribution of psychological components to the occurrenc...
Article
Full-text available
Background: Various physical symptoms are attributed to environmental factors. EMF exposure is one of these but there is no convincing evidence of a causal relationship. The current review aims to address the strength of evidence for an association between actual and perceived exposure to EMF and non-specific physical symptoms. To gain more insight...
Article
Only limited data are available on personal radio frequency electromagnetic field (RF-EMF) exposure in everyday life. Several European countries performed measurement studies in this area of research. However, a comparison between countries regarding typical exposure levels is lacking. To compare for the first time mean exposure levels and contribu...
Article
Full-text available
The development of new wireless communication technologies that emit radio frequency electromagnetic fields (RF-EMF) is ongoing, but little is known about the RF-EMF exposure distribution in the general population. Previous attempts to measure personal exposure to RF-EMF have used different measurement protocols and analysis methods making comparis...
Article
Background: Little is known about the population's exposure to radio frequency electromagnetic fields (RF-EMF) in industrialized countries. Objectives: To examine levels of exposure and the importance of different RF-EMF sources and settings in a sample of volunteers living in a Swiss city. Methods: RF-EMF exposure of 166 volunteers from Basel...
Article
The common focal point (CFP) method and the common reflection surface (CRS) stack method are compared. The CRS method is a fast, highly automated procedure that provides high S/N ratio simulation of zero-offset (ZO) images by combining, per image point, the reflection energy of an arc segment that is tangential to the reflector. It uses smooth para...
Conference Paper
The Common Focal Point (CFP) method and the Common Reflection Surface (CRS) stack method are compared. The CRS method is a fast, highly automated procedure that provides high S/N ratio Migration to Zero Offset (MZO) images, by combining per image-point the reflection energy of a tangent are segment to the reflector.
Article
The objective of this PhD project is to present a data-driven method to determine one-way focusing operators. Focusing operators are the input for imaging a subsurface structure from measurements at the surface. They can be used in imaging the earth's interior, and also in non-destructive imaging of e.g. wings of aeroplanes or in medical imaging fo...
Conference Paper
The CFP technology has been extensively discussed, in e.g. (Berkhout, 1997a) and (Thorbecke, 1997). In this abstract a brief overview of the basic principles of CFP-related processing, (Berkhout, 1997a) and (Thorbecke, 1997), and imaging is given.
Article
We introduce the focal point matrix, that is constructed from the data-driven determined traveltime operators found using Common focus Point (CFP) technology. This matrix contains all the confocal reflectivity information connected to one point in the subsurface. From this matrix we determine three major features: • The area of image contribution p...
Article
Summary For a reliable image of the subsurface correct focusing operators need be used. Traditionally these are calculated from the velocity-depth model. In the CFP approach they are obtained directly from the seismic data by (iteratively) updating the initial (hyperbolic) focusing operator using the principle of equal travel time. The updating can...
Article
A strategy for velocity independent redatuming using the Common Focus Point technology is presented. First a data-driven estimation of the focusing operators using principle of equal traveltime between a CFP gather and focusing operator is performed. By means of applying a double focusing process redatumed shot records at the new datum level are cr...
Article
Full-text available
Summary The Common Focal Point (CFP) technology involves the estima- tion of one-way travel time operators, describing the propagation effects from a selection of gridpoints at reflecting interfaces to- wards the surface locations. These operators can be obtained from the data without using any velocity depth model. These operators can be used in s...
Article
Full-text available
The number of people concerned about the location of base stations is not dependent on the actual distance of these stations from residences. Concern about electromagnetic fields seems to be mainly a matter of risk perception. These were outcomes of the exploratory study prompted by a concern for the safety of people experiencing adverse health eff...
Article
Full-text available
The EU has issued Directive 2004/40/EC on the protection of workers from health and safety risks arising from exposure to electromagnetic fields in the workplace. This directive must be implemented in national legislation no later than 30 April 2008. To prepare for implementation, RIVM has, on commission of the Ministry of Social Affairs and Employ...
Article
Full-text available
An inventory of available information on the exposure to radio-frequency electromagnetic fields has revealed insufficient knowledge on two items: i.e., 1) if and how exposure to these electromagnetic fields can lead to complaints like headaches, and 2) the lack of a good-quality overview of all sources in the Netherlands and their contribution to t...

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