Eating and living gluten-free, we have all faced the fact that the healthiest and least expensive way to do this is to cook the majority of our meals from scratch.
After you are done preparing the ingredients, it's time to start cooking. Get a large pot and put in all of the listed ingredients with water. Put enough water to cover most of the ingredients, but not all. The meat and the vegetables will absorb the surrounding heat and will get cooked in due time. Also we're able to put in all the ingredients at once because they all take about the same easy beef stew time to get thoroughly cooked.
Din Tai Fong is a restaurant simple beef stew chain known for their xiao long bao or mini steamed pork soup dumplings. Din Tai Fong is all over the world, I know of two in Taiwan, one in California, a few in Japan and Mainland China and of course, one special one in Hong Kong.
Kids rode the school bus; it was not derisively called "the big cheese". Many communities didn't have the money for luxuries like buses so children walked to school, even in bone chilling cold. If one could clamber aboard a warm bus filled with your friends - what a treat. The thought of hitting another child or not obeying the driver never occurred to anyone. Your dad would "ground you for life" or possibly "kill you".
There is definitely a refreshing difference with Amore Tomato Paste in the tube versus a can of tomato paste because it captures the essence of fresh, ripe tomatoes. Furthermore, due to the fact it is in a tube, you can just use what you need and refrigerate the rest for a later date.
Place the pan back on the stove (on hot) and add 2 tablespoons of olive oil. When the oil gets hot, throw in your diced up onions and wait 3-4 minutes for the onions to become translucent. Finally, add your 1-2 cans of beef broth.
One of easy and simple ways to take something new is to discover a conventional oven easy quick beef stew. And adapt it with the crock pot so that they can create your possess original crock marijuana beef stew formula.
The Portsmouth Brewery is located on 56 Market Street in Portsmouth, New Hampshire. They are open seven days a week from 11:30 A.M. until 12:30 at night. It is defiantly a causal dressy type of place to go with a great relaxing upbeat happy atmosphere. The wait staff, cooks, managers, and bar tenders at the Portsmouth Brewery are super friendly and very helpful and provide excellent service to all of their customers that go there for a cold brewed beer and some hot food.
Cook the mostaccioli while using package directions; empty well. Stir the cooked mostaccioli inside the stew easy beef stew meat recipes typically the cooker. When covering, sprinkle mozzarella ott of the stew.
camas blog
Tuesday, July 4, 2017
Sunday, May 14, 2017
NFL investigating Giants for using two-way radio during game against Cowboys
Apparently using a two way radio during an American football game is frowned upon over in the good old US of A, This article is about a game between the Giants and the Cowboys. During a Game the coaching staff and Quarterback are not allowed to communicate if there is 15 seconds or less on the clock, this rule might have been broken with the use of a walkie talkie.
The NFL is investigating the Giantsâ potentially rule-breaking use of a two-way radio during the teamâs recent 10-7 win over the Dallas Cowboys.
The use of a two-way radio by a coach during a game is strictly against league rules, according to ESPN.
In the fourth quarter of the game, Giants head coach Ben McAdoo was spotted using a walkie-talkie to communicate play calls with Eli Manning after his headset malfunctioned.
The Cowboys issued a formal complaint to the league over the radio use, but the NFLâs investigation was already underway by the time Dallas contacted them.
The NFL has a rule against coaches using two-way handheld radios because the league cannot control when both parties are communicating.
A coach using a walkie-talkie makes it harder for the NFL to monitor a league rule that states communication from the sideline to the quarterback must end when 15 seconds are left on the play clock.
With headsets, the NFL has the power to shut off communication at will with a âcutoff switch operator,â ESPN reported.
The Giants had no comment when reached Thursday night.
McAdoo used the walkie talkie in question, however, for about four or five plays on the Giantsâ fourth-quarter drive that ended in an Eli Manning interception on a pass intended for Victor Cruz.
McAdooâs normal equipment malfunctioned and as the Giants worked to fix it, the coach was handed the walkie talkie temporarily because its signal was reaching Manningâs helmet.
As the Giants worked to correct McAdooâs equipment, Odell Beckham Jr. could be seen running to the sideline to bring plays back to the huddle and Manning was heading over to the sideline, as well.
There is no evidence in reviewing the game film that demonstrates McAdoo was on the walkie talkie for longer than the allowed 15 seconds of communication with his quarterback.
There is also, of course, no evi dence that the Giants gained any advantage even if he was. The drive ended in a turnover and the Giantsâ offense stunk most of the night.
The NFL is investigating the Giantsâ potentially rule-breaking use of a two-way radio during the teamâs recent 10-7 win over the Dallas Cowboys.
The use of a two-way radio by a coach during a game is strictly against league rules, according to ESPN.
In the fourth quarter of the game, Giants head coach Ben McAdoo was spotted using a walkie-talkie to communicate play calls with Eli Manning after his headset malfunctioned.
The Cowboys issued a formal complaint to the league over the radio use, but the NFLâs investigation was already underway by the time Dallas contacted them.
The NFL has a rule against coaches using two-way handheld radios because the league cannot control when both parties are communicating.
A coach using a walkie-talkie makes it harder for the NFL to monitor a league rule that states communication from the sideline to the quarterback must end when 15 seconds are left on the play clock.
With headsets, the NFL has the power to shut off communication at will with a âcutoff switch operator,â ESPN reported.
The Giants had no comment when reached Thursday night.
McAdoo used the walkie talkie in question, however, for about four or five plays on the Giantsâ fourth-quarter drive that ended in an Eli Manning interception on a pass intended for Victor Cruz.
McAdooâs normal equipment malfunctioned and as the Giants worked to fix it, the coach was handed the walkie talkie temporarily because its signal was reaching Manningâs helmet.
As the Giants worked to correct McAdooâs equipment, Odell Beckham Jr. could be seen running to the sideline to bring plays back to the huddle and Manning was heading over to the sideline, as well.
There is no evidence in reviewing the game film that demonstrates McAdoo was on the walkie talkie for longer than the allowed 15 seconds of communication with his quarterback.
There is also, of course, no evi dence that the Giants gained any advantage even if he was. The drive ended in a turnover and the Giantsâ offense stunk most of the night.
Friday, April 14, 2017
What Is The Best Way To Choose a Radio Earpiece
When choosing a radio earpiece, there are several factors that should be considered. A radio earpiece should not only aid in communication it should also protect the userâs ear against cumulative ear damage that may eventually result in ear loss. Below are the factors that you should consider when buying a radio earpiece;
1) Clarity of communication
The most important reason as to why you have a radio is for clear communication and this is what your radio earpiece should enhance . Although there are several radio earpieces out there, many of them use bone conduction when transmitting the userâs speech meaning that they heavily rely on vibrations of oneâs skull as they talk. This does not help much in ensuring that the communications are clear especially when one is on the move.
You should therefore go for a system whose in-ear microphone does not use b one conduction and this will enhance the sound clarity. Such a system can even transmit speeches when one is whispering and this comes in handy especially when in an environment where secrecy is very crucial.
2) Comfort
It is very important to select a system that you feel comfortable with most importantly when you are to wear it on your head. Note that, you will probably be wearing the gear for long hours and that is why it should be of lightweight and should not in any way interfere with your eye wear or helmet.
Avoid heavy, sweaty and coiled tube earpieces that are very uncomfortable and will cause ear fatigue. Instead, go for a radio earpiece whose microphone is built into the earbud itself. Such earpieces come in various shapes and sizes and can even be customized to fit the specific needs of a user. Note that, military-grade materials are specifically designed to be of lightweight.
3) Durability
Durability is a very important factor that should be considered when choosing a radio earpiece. You obviously donât want to be wasting your time and money going back to look for another earpiece just because the one you chose did not last. This is why it is very important to select a system that is durable and has been tested for rugged use of a soldier or a SWAT officer. Go for one whose manufacturer is experienced in manufacturing earpieces that can withstand water, dirt, shock and even extreme temperatures.
4) Ease of use
Your radio earpiece should be easy to use because you canât afford to mess up with the push-to-talk or the on & off buttons especially when on the move. Your gear should immediately fit into your actions with minimum effort. Look at the operational and the ergonomic features of the various radio earpieces and make sure that all its features are both of the right sizes and in the right places.
5) Hearing protection
Claims related to hearing loss and its related dis abilities is on the rise among police & military veterans and this has led to the need for hearing protection for officers. Note that, hearing loss occurs cumulatively over time and it is irreversible. This is in addition to the fact that it has been associated with cognitive decline and that is why even the minor hearing loss can have a huge impact in the course of time. Select a radio earpiece that not only ensures effective communication, but also the hearing safety of the user.
6) Situational awareness
An earpiece is basically meant to keep you focused and keep your hands free. You should be aware of what is happening in their surrounding and that is why a radio earpiece should allow one to hear sounds that are outside, to stay alert with their surroundings.
In order to have full communications (just like one would have without anything in their ears), it is wise to choose a radio earpiece that has an external microphone. There are systems that even enable you to adjust volume of the external microphone and this ensures that you are aware of the happenings in your surroundings.
7) Modularity & Compatibility
There are several systems that are available out there and you should look for one that fits your requirements. As mentioned above, some of them can be customized to fit an individual userâs specific needs so you can never run out of options.
A radio earpiece that has a modular connector is good as you can change it to match even a different radio without having to replace the entire system. Some systems can even go with both earbuds and over-the-ear earpieces so depending on your needs, select the appropriate system.
8) Affordability
Many years ago radio earpieces cost £100 and upwards, these days you can get a D-ring earpiece for less than £15 and an acoustic tube for about £25. Bone conductor earpieces that were previously and expensive piece of technology, can be yours for about £40.
1) Clarity of communication
The most important reason as to why you have a radio is for clear communication and this is what your radio earpiece should enhance . Although there are several radio earpieces out there, many of them use bone conduction when transmitting the userâs speech meaning that they heavily rely on vibrations of oneâs skull as they talk. This does not help much in ensuring that the communications are clear especially when one is on the move.
You should therefore go for a system whose in-ear microphone does not use b one conduction and this will enhance the sound clarity. Such a system can even transmit speeches when one is whispering and this comes in handy especially when in an environment where secrecy is very crucial.
2) Comfort
It is very important to select a system that you feel comfortable with most importantly when you are to wear it on your head. Note that, you will probably be wearing the gear for long hours and that is why it should be of lightweight and should not in any way interfere with your eye wear or helmet.
Avoid heavy, sweaty and coiled tube earpieces that are very uncomfortable and will cause ear fatigue. Instead, go for a radio earpiece whose microphone is built into the earbud itself. Such earpieces come in various shapes and sizes and can even be customized to fit the specific needs of a user. Note that, military-grade materials are specifically designed to be of lightweight.
3) Durability
Durability is a very important factor that should be considered when choosing a radio earpiece. You obviously donât want to be wasting your time and money going back to look for another earpiece just because the one you chose did not last. This is why it is very important to select a system that is durable and has been tested for rugged use of a soldier or a SWAT officer. Go for one whose manufacturer is experienced in manufacturing earpieces that can withstand water, dirt, shock and even extreme temperatures.
4) Ease of use
Your radio earpiece should be easy to use because you canât afford to mess up with the push-to-talk or the on & off buttons especially when on the move. Your gear should immediately fit into your actions with minimum effort. Look at the operational and the ergonomic features of the various radio earpieces and make sure that all its features are both of the right sizes and in the right places.
5) Hearing protection
Claims related to hearing loss and its related dis abilities is on the rise among police & military veterans and this has led to the need for hearing protection for officers. Note that, hearing loss occurs cumulatively over time and it is irreversible. This is in addition to the fact that it has been associated with cognitive decline and that is why even the minor hearing loss can have a huge impact in the course of time. Select a radio earpiece that not only ensures effective communication, but also the hearing safety of the user.
6) Situational awareness
An earpiece is basically meant to keep you focused and keep your hands free. You should be aware of what is happening in their surrounding and that is why a radio earpiece should allow one to hear sounds that are outside, to stay alert with their surroundings.
In order to have full communications (just like one would have without anything in their ears), it is wise to choose a radio earpiece that has an external microphone. There are systems that even enable you to adjust volume of the external microphone and this ensures that you are aware of the happenings in your surroundings.
7) Modularity & Compatibility
There are several systems that are available out there and you should look for one that fits your requirements. As mentioned above, some of them can be customized to fit an individual userâs specific needs so you can never run out of options.
A radio earpiece that has a modular connector is good as you can change it to match even a different radio without having to replace the entire system. Some systems can even go with both earbuds and over-the-ear earpieces so depending on your needs, select the appropriate system.
8) Affordability
Many years ago radio earpieces cost £100 and upwards, these days you can get a D-ring earpiece for less than £15 and an acoustic tube for about £25. Bone conductor earpieces that were previously and expensive piece of technology, can be yours for about £40.
Monday, April 3, 2017
Occupational health effects linked to terrestrial trunked radios (TETRA)
Tetra has been the main stay for the Emergency services for over 10 years and it has been a used by other industries for longer than that. There has been plenty of time for health concerns to be brought up and as the technology is similar to mobile phone, which has been around for 20+ years and radio communications (walkie talkies) for much longer than that, and no really hard evidence has ever been brought that either of these two cause health issues, this article probes the possibilities of TETRA causing health concerns, see what they uncover below.
The use of terrestrial trunked radios (TETRAs) has raised concerns about health and sickness absence. Jackie Cinnamond looks at the evidence for a precautionary approach.
The British police and the other emergency services use a communication system involving technology called TETR A (terrestrial trunked radio), which is halfway between a mobile phone system and a walkie-talkie.
At one NHS trust during the autumn of 2013, it was noted that there seemed to be a correlation between increasing levels of sickness absence in ambulance staff and the recent introduction of TETRAs.
This assumed association was based upon clinical presentations of cases being seen in occupational health practice involving ambulance service employees, who maintain that their portable radio handsets are causing them to experience adverse health effects.
TETRA is the leading public safety radio communications system worldwide, and serves to enhance the function of almost 500,000 police, ambulance and firefighting employees (Airwave solutions, 2012; Motorola, 2007).
The Government commissioned TETRA in 2005 at a cost of £3 billion. It did so in response to concerns raised by the Police Federation regarding the use of a two-way radio communication system and its link with breast cancer in female operatives (Police Federation News, 2005).
The use of TETRAs was contentious due to similar health fears raised by the Health Protection Agency and its working group of 2001. Consequently, the Airwave Health Monitoring Study started in 2009 and the findings are due to be released in 2018 (Imperial College London, 2009). This long-term, observational study is investigating health outcomes of TETRA users within the police force.
Initial concerns were raised by Lancashire police after it was introduced, when almost 200 police officers began to experience symptoms of nausea, malaise, head pain, insomnia, skin complaints and two cases of oesophageal cancer (Farrell, 2002; Police Federation News, 2005).
Comparably, these symptoms cor relate with reports of symptoms experienced by the ambulance employees within this trust, soon after the TETRA system was purchased, and which could be associated with electromagnetic radiation emitted by this technology.
Technical issues related to TETRAs
Radiation is a source of energy produced during atom separation. The process of ionisation results in the addition, or removal, of one or more electrons from an atom or molecule.
The force of the electromagnetic energy waves released during separation are categorised as either non-ionising, where the energy released is insufficient to ionise matter, or ionising radiation, where adequate energy is present to ionise matter (Tillman, 2007).
Ionising radiation is associated with the X-ray process; and non-ionising radiation is associated with the transmission and receipt of mobile telecommunication signals (IEGMP, 2000).
Electromagnetic fields are quantified by their wavelength, and the frequenc y at which the wave pulsates (Sanchez, 2006).
The wavelength frequencies are expressed in Hertz (Hz) and oscillate within a spectrum where one Hz is one oscillation per second, and one kiloHertz (kHz) is 1,000 Hz. Radios using 16-17Hz should be avoided as these frequencies are known to adversely affect health. TETRAs operate at a frequency of 17.6Hz
Potential implications for health
Mobile telecommunication devices are a cause of contention. The health effects associated with their use remain unproven (Kundi, 2009). Human stem cells are more susceptible to electromagnetic fields compared with differentiated human primary cells. The constraining influences of electromagnetic fields upon DNA regeneration in human stem cells could manifest itself in the development of abnormalities within the DNA replication process. Consequently, the initiation of cancer may result (Valberg et al, 2007).
With an estimated 500,000 emergency service employees currently us ing TETRA systems, if a causal relationship between the use of portable radio handsets and cancer development was subsequently established, then this could present a significant OH and public health challenge (Health Professionals Council, 2011; Dhani, 2012).
Current research
The incessant proliferation of wireless telecommunications technology use has intensified public fears and generated international debate regarding the chances of cancer developing as a direct consequence of exposure to electromagnetic fields emitted from devices such as mobile phones (Kundi, 2009).
Research findings accumulated over the past decade suggest a causal relationship between electromagnetic exposure through the use of wireless telecommunication systems and cancer development (Levis et al, 2011). Conflictingly, current research results conclude that there is insufficient evidence, or none at all, to suggest that acceptable electromagnetic frequencies emitted through mobile pho ne use can cause adverse health conditions or cancer (Kundi, 2009).
However, the majority of current research studies are sponsored by the telecommunication industry and, therefore, findings tend to significantly underestimate cancer risk. The overall accumulation of research findings, regardless of study design imperfections and financial bias, leans towards the opinion that there is an increased likelihood of a causal relationship between mobile phone use and cancer (Kundi, 2009; Levis et al, 2011).
Legislation related to TETRAs
Although most technology poses some level of risk to human health, such threats must be measured precisely and dependably (Levis et al, 2011). Presently, two international organisations â" the International Commission on Non-Ionising Radiation Protection (ICNIRP) and the National Radiological Protection Board (NRPB) â" have produced guidelines for limiting exposure to electromagnetic fields within the UK and the European Union (EU ).
The ICNIRP (1998) recommendations have been integrated into the European Council Recommendations (1999) and have subsequently been incorporated into statute in Germany (WHO, 2011).
Limits for human exposure to electromagnetic fields have been set accordingly by the ICNIRP and the NRPB (1993) at between 10 and 300 GHz. However, the ICNIRP guidelines have established an upper limit for occupational exposure that is five times higher in employees than it is in the general public (IEGMP, 2000). The exposure limit values are referred to as âbasic restrictionsâ and are based upon specific absorption rate (SAR), which equates to the rate at which the body absorbs energy in relation to each unit of body tissue (WHO, 2011).
Precautionary principles for TETRA use
In the absence of accurate guidance and methods for measuring exposure levels, the robust research evidence that establishes a causal link between electromagnetic exposure and cancer should be a cknowledged and precautionary principles implemented (Hardell et al, 2005).
Precautionary principles with regard to electromagnetic radiation are defined by Valberg et al (2007) as implementing a safety-conscious approach prior to a significant causal link between electromagnetic fields and cancer development being established. The idea behind introducing precautionary principles is to try to reduce the degree of public concern regarding the potential health implications of exposure to electromagnetic fields (Wiedeman and Schutz, 2005).
However, the implementation of precautionary principles would be subjected to a cost-benefit analysis and, therefore, would be measured against what the populace deems financially equivalent to the cost of similar risks to society (Australian Radiation Protection and Nuclear Safety Agency, 2001).
Furthermore, their implementation may adversely increase the publics perception of risk and induce a psychosomatic-related developme nt of adverse health problems and proceed to over burden already stretched resources unnecessarily.
However, the Bioinitiative Working Group (2012) contends that the public health approach to addressing exposure to electromagnetic fields should be viewed in the same regard as passive smoking and established on the current scientific evidence accessible.
Implications for OH
Despite the health risks associated with electromagnetic field exposure, the National Policing Improvement Agency continues to emphasise to its employees that the only adverse health effects of electromagnetic fields are established through tissue heating at significant levels.
It also discredited the accounts of the symptoms experienced by employees as psychosomatic conditions (Farrell, 2002; Police Federation News, 2005).
However, Kundi (2009) affirms that the carcinogenic effects of electromagnetic fields over a prolonged latency period are equivalent to the same intensit ies for smoking-related cancers. Furthermore, the latency period for cancer development is estimated to be 10-30 years. This raises concerns regarding the increased age of retirement, because occupational health departments could potentially have to adapt to accommodate older workers who have been subjected to long latency periods of electromagnetic exposure and its associated health conditions.
The Global Occupational Health Network (2006) advocates that staff undertaking occupational roles with a potential carcinogenic risk should be properly educated and instructed about the appropriate precautionary measures for working with carcinogens, in accordance with health and safety protocols.
The duty of care under s.2 of the Health and Safety at Work etc Act (1974) requires employers to implement what is reasonably practicable to safeguard the health and safety of their employees through the establishment of safe systems of work, and to ensure that staff are adequately informed regarding any potential hazards.
The Independent Expert Group on Mobile Phones maintains that a precautionary approach to the use of mobile phones be adopted until more detailed and scientifically robust information on any potential health effects becomes apparent.
Conclusion
Telecommunication technology will continue to evolve and may be associated with future health risks. In the absence of any substantial research evidence to conclusively prove that exposure to electromagnetic fields does not pose a risk to health, precautionary measures should be implemented.
The emphasis of these measures should include policy changes that keeps pace with technological developments. This goes hand in hand with evidence-based practice and processes that educate employers and employees, aimed at minimising the potential health risks associated from prolonged electromagnetic field exposure. The findings of the airwave health monitoring study are eagerly awa ited.
The use of terrestrial trunked radios (TETRAs) has raised concerns about health and sickness absence. Jackie Cinnamond looks at the evidence for a precautionary approach.
The British police and the other emergency services use a communication system involving technology called TETR A (terrestrial trunked radio), which is halfway between a mobile phone system and a walkie-talkie.
At one NHS trust during the autumn of 2013, it was noted that there seemed to be a correlation between increasing levels of sickness absence in ambulance staff and the recent introduction of TETRAs.
This assumed association was based upon clinical presentations of cases being seen in occupational health practice involving ambulance service employees, who maintain that their portable radio handsets are causing them to experience adverse health effects.
TETRA is the leading public safety radio communications system worldwide, and serves to enhance the function of almost 500,000 police, ambulance and firefighting employees (Airwave solutions, 2012; Motorola, 2007).
The Government commissioned TETRA in 2005 at a cost of £3 billion. It did so in response to concerns raised by the Police Federation regarding the use of a two-way radio communication system and its link with breast cancer in female operatives (Police Federation News, 2005).
The use of TETRAs was contentious due to similar health fears raised by the Health Protection Agency and its working group of 2001. Consequently, the Airwave Health Monitoring Study started in 2009 and the findings are due to be released in 2018 (Imperial College London, 2009). This long-term, observational study is investigating health outcomes of TETRA users within the police force.
Initial concerns were raised by Lancashire police after it was introduced, when almost 200 police officers began to experience symptoms of nausea, malaise, head pain, insomnia, skin complaints and two cases of oesophageal cancer (Farrell, 2002; Police Federation News, 2005).
Comparably, these symptoms cor relate with reports of symptoms experienced by the ambulance employees within this trust, soon after the TETRA system was purchased, and which could be associated with electromagnetic radiation emitted by this technology.
Technical issues related to TETRAs
Radiation is a source of energy produced during atom separation. The process of ionisation results in the addition, or removal, of one or more electrons from an atom or molecule.
The force of the electromagnetic energy waves released during separation are categorised as either non-ionising, where the energy released is insufficient to ionise matter, or ionising radiation, where adequate energy is present to ionise matter (Tillman, 2007).
Ionising radiation is associated with the X-ray process; and non-ionising radiation is associated with the transmission and receipt of mobile telecommunication signals (IEGMP, 2000).
Electromagnetic fields are quantified by their wavelength, and the frequenc y at which the wave pulsates (Sanchez, 2006).
The wavelength frequencies are expressed in Hertz (Hz) and oscillate within a spectrum where one Hz is one oscillation per second, and one kiloHertz (kHz) is 1,000 Hz. Radios using 16-17Hz should be avoided as these frequencies are known to adversely affect health. TETRAs operate at a frequency of 17.6Hz
Potential implications for health
Mobile telecommunication devices are a cause of contention. The health effects associated with their use remain unproven (Kundi, 2009). Human stem cells are more susceptible to electromagnetic fields compared with differentiated human primary cells. The constraining influences of electromagnetic fields upon DNA regeneration in human stem cells could manifest itself in the development of abnormalities within the DNA replication process. Consequently, the initiation of cancer may result (Valberg et al, 2007).
With an estimated 500,000 emergency service employees currently us ing TETRA systems, if a causal relationship between the use of portable radio handsets and cancer development was subsequently established, then this could present a significant OH and public health challenge (Health Professionals Council, 2011; Dhani, 2012).
Current research
The incessant proliferation of wireless telecommunications technology use has intensified public fears and generated international debate regarding the chances of cancer developing as a direct consequence of exposure to electromagnetic fields emitted from devices such as mobile phones (Kundi, 2009).
Research findings accumulated over the past decade suggest a causal relationship between electromagnetic exposure through the use of wireless telecommunication systems and cancer development (Levis et al, 2011). Conflictingly, current research results conclude that there is insufficient evidence, or none at all, to suggest that acceptable electromagnetic frequencies emitted through mobile pho ne use can cause adverse health conditions or cancer (Kundi, 2009).
However, the majority of current research studies are sponsored by the telecommunication industry and, therefore, findings tend to significantly underestimate cancer risk. The overall accumulation of research findings, regardless of study design imperfections and financial bias, leans towards the opinion that there is an increased likelihood of a causal relationship between mobile phone use and cancer (Kundi, 2009; Levis et al, 2011).
Legislation related to TETRAs
Although most technology poses some level of risk to human health, such threats must be measured precisely and dependably (Levis et al, 2011). Presently, two international organisations â" the International Commission on Non-Ionising Radiation Protection (ICNIRP) and the National Radiological Protection Board (NRPB) â" have produced guidelines for limiting exposure to electromagnetic fields within the UK and the European Union (EU ).
The ICNIRP (1998) recommendations have been integrated into the European Council Recommendations (1999) and have subsequently been incorporated into statute in Germany (WHO, 2011).
Limits for human exposure to electromagnetic fields have been set accordingly by the ICNIRP and the NRPB (1993) at between 10 and 300 GHz. However, the ICNIRP guidelines have established an upper limit for occupational exposure that is five times higher in employees than it is in the general public (IEGMP, 2000). The exposure limit values are referred to as âbasic restrictionsâ and are based upon specific absorption rate (SAR), which equates to the rate at which the body absorbs energy in relation to each unit of body tissue (WHO, 2011).
Precautionary principles for TETRA use
In the absence of accurate guidance and methods for measuring exposure levels, the robust research evidence that establishes a causal link between electromagnetic exposure and cancer should be a cknowledged and precautionary principles implemented (Hardell et al, 2005).
Precautionary principles with regard to electromagnetic radiation are defined by Valberg et al (2007) as implementing a safety-conscious approach prior to a significant causal link between electromagnetic fields and cancer development being established. The idea behind introducing precautionary principles is to try to reduce the degree of public concern regarding the potential health implications of exposure to electromagnetic fields (Wiedeman and Schutz, 2005).
However, the implementation of precautionary principles would be subjected to a cost-benefit analysis and, therefore, would be measured against what the populace deems financially equivalent to the cost of similar risks to society (Australian Radiation Protection and Nuclear Safety Agency, 2001).
Furthermore, their implementation may adversely increase the publics perception of risk and induce a psychosomatic-related developme nt of adverse health problems and proceed to over burden already stretched resources unnecessarily.
However, the Bioinitiative Working Group (2012) contends that the public health approach to addressing exposure to electromagnetic fields should be viewed in the same regard as passive smoking and established on the current scientific evidence accessible.
Implications for OH
Despite the health risks associated with electromagnetic field exposure, the National Policing Improvement Agency continues to emphasise to its employees that the only adverse health effects of electromagnetic fields are established through tissue heating at significant levels.
It also discredited the accounts of the symptoms experienced by employees as psychosomatic conditions (Farrell, 2002; Police Federation News, 2005).
However, Kundi (2009) affirms that the carcinogenic effects of electromagnetic fields over a prolonged latency period are equivalent to the same intensit ies for smoking-related cancers. Furthermore, the latency period for cancer development is estimated to be 10-30 years. This raises concerns regarding the increased age of retirement, because occupational health departments could potentially have to adapt to accommodate older workers who have been subjected to long latency periods of electromagnetic exposure and its associated health conditions.
The Global Occupational Health Network (2006) advocates that staff undertaking occupational roles with a potential carcinogenic risk should be properly educated and instructed about the appropriate precautionary measures for working with carcinogens, in accordance with health and safety protocols.
The duty of care under s.2 of the Health and Safety at Work etc Act (1974) requires employers to implement what is reasonably practicable to safeguard the health and safety of their employees through the establishment of safe systems of work, and to ensure that staff are adequately informed regarding any potential hazards.
The Independent Expert Group on Mobile Phones maintains that a precautionary approach to the use of mobile phones be adopted until more detailed and scientifically robust information on any potential health effects becomes apparent.
Conclusion
Telecommunication technology will continue to evolve and may be associated with future health risks. In the absence of any substantial research evidence to conclusively prove that exposure to electromagnetic fields does not pose a risk to health, precautionary measures should be implemented.
The emphasis of these measures should include policy changes that keeps pace with technological developments. This goes hand in hand with evidence-based practice and processes that educate employers and employees, aimed at minimising the potential health risks associated from prolonged electromagnetic field exposure. The findings of the airwave health monitoring study are eagerly awa ited.
Sunday, March 19, 2017
MIT's new method of radio transmission could one day make wireless VR a reality
VR is the Buzz word for this year, every technology company clambering to get their headset out on to the market. Much of the market needs to catch-up though, the power of home computing needs to improve and removing the inevitable extra cabling and wires that come with current headsets. Luckily this article is about the future technology of VR headsets, see what we can expect as this technology grows.
If you want to use one of today's major VR headsets, whether the Oculus Rift, the HTC Vive, or the PS VR, you have to accept the fact that there will be an illusion-shattering cable that tethers you to the small supercomputer that's powering your virtual world.
But researchers from MITâs Computer Science and Artificial Intelligence Laboratory (CSAIL) may have a solution in MoVr, a wireless virtual reality system. Instead of using Wi-Fi or Bluetooth to transmit data, the research teamâs MoVR system uses high-frequency millimeter wave radio to stream data from a computer to a headset wirelessly at dramatically faster speeds than traditional technology.
There have been a variety of approaches to solving this problem already. Smartphone-based headsets such as Google's Daydream View and Samsung's Gear VR allow for untethered VR by simply offloading the computational work directly to a phone inside the headset. Or the entire idea of VR backpacks, which allow for a more mobile VR experience by building a computer that's more easily carried. But there are still a lot of limitations to either of these solutions.
THE MOVR PROTOTYPE SIDESTEPS TETHERED VR ISSUES
Latency is the whole reason a wireless solution hasn't worked so far. VR is especially latency-sensitive, along with the huge bandwidth requirements that VR needs to display the level of high-resolution video required for virtual reality to work. But the MIT team claims that the millimeter wave signals can transmit fast enough to make a wireless VR headset feasible.
The issue with using millimeter wave technology is that the signal needs a direct line of sight, and fares poorly when it encounters any obstacles. MoVR gets around this by working as a programmable mirror that can direct the direction of the signal to the headset even while itâs moving to always make sure the signal is transmitting directly to the headset's receivers.
For now, the MoVR is simply a prototype, with the team hoping to further shrink down the system to allow for multiple wireless headsets in one room without encountering signal interference. But even as a proof-of-concept, it's an interesting perspective on how virtual reality could one day work.
If you want to use one of today's major VR headsets, whether the Oculus Rift, the HTC Vive, or the PS VR, you have to accept the fact that there will be an illusion-shattering cable that tethers you to the small supercomputer that's powering your virtual world.
But researchers from MITâs Computer Science and Artificial Intelligence Laboratory (CSAIL) may have a solution in MoVr, a wireless virtual reality system. Instead of using Wi-Fi or Bluetooth to transmit data, the research teamâs MoVR system uses high-frequency millimeter wave radio to stream data from a computer to a headset wirelessly at dramatically faster speeds than traditional technology.
There have been a variety of approaches to solving this problem already. Smartphone-based headsets such as Google's Daydream View and Samsung's Gear VR allow for untethered VR by simply offloading the computational work directly to a phone inside the headset. Or the entire idea of VR backpacks, which allow for a more mobile VR experience by building a computer that's more easily carried. But there are still a lot of limitations to either of these solutions.
THE MOVR PROTOTYPE SIDESTEPS TETHERED VR ISSUES
Latency is the whole reason a wireless solution hasn't worked so far. VR is especially latency-sensitive, along with the huge bandwidth requirements that VR needs to display the level of high-resolution video required for virtual reality to work. But the MIT team claims that the millimeter wave signals can transmit fast enough to make a wireless VR headset feasible.
The issue with using millimeter wave technology is that the signal needs a direct line of sight, and fares poorly when it encounters any obstacles. MoVR gets around this by working as a programmable mirror that can direct the direction of the signal to the headset even while itâs moving to always make sure the signal is transmitting directly to the headset's receivers.
For now, the MoVR is simply a prototype, with the team hoping to further shrink down the system to allow for multiple wireless headsets in one room without encountering signal interference. But even as a proof-of-concept, it's an interesting perspective on how virtual reality could one day work.
Saturday, February 11, 2017
Army to Launch Another Competition for New Soldier Radio
In the modern world the army has to have perfect communications, from coordinating attacks to communicating with other platoons, on the battlefield it really could mean the difference between life and death. This article plans to find the next Military radio.
U.S. Army tactical radio officials plan to launch a competition for a new handheld radio next year that would give soldiers twice the capability of the current Rifleman Radio.
The Army currently uses the single-channel AN/PRC 154A Rifleman Radio as its soldier handheld data radio. It runs the Soldier Radio Waveform, which small-unit leaders use to download and transmit maps, images and texts to fellow infantry soldiers in a tactical environment.
If they want to talk to each other, they often rely on another single-channel handheld -- the AN/PRC 148 MultiBand Inter/Intra Team Radio, or MBITR, which runs the Single Channel Ground and Airborne Radio, or SINCGARS, for voice communications.
The Army plans to release a request-for-proposal in 2017 for a two-channel radio that will allow soldiers to run the Soldier Radio Waveform, or SRW, for data and SINCGARS for voice on one radio, according to Col. James P. Ross, who runs Project Manager Tactical Radios.
The change will mean that soldiers will no longer need the 148 MBITR and be able to rely on the new, two-channel radio for both data and voice communications, Ross said.
"We know industry can meet our requirements. ⦠We know it's achievable," he said.
The move represents a change in strategy for the Army since the service awarded contracts in 2015 to Harris Corporation and Thales for a next-generation version of the Rifleman Radio.
"We went out with a competition for the next generation of the [Rifleman Radio]. Two companies, Harris and Thales, competed," Ross said. "We went through testing, and we were on the verge of being able to buy more of them when the Army said, 'Our strategy now is two-channel.' "
The Army had planned an initial buy of about 4,000 Thales AN/PRC-154B(V)1 radios and Harris AN/PRC-159(V)1 radios, according to Army program documents for fiscal 2015.
"We will not be taking action on those," Ross said.
The current Rifleman Radio was developed as part of the Handheld, Manpack, Small Form Fit, or HMS program. HMS radios are designed around the Army's tactical network strategy to create secure tactical networks without the logistical nightmare of a tower-based antenna infrastructure.
It's also a key part of the Army's Nett Warrior system. It hooks into an Android-based smartphone and gives soldiers in infantry brigade combat teams the ability to send and receive emails, view maps and watch icons on a digital map that represent the locations of their fellow soldiers. The concept came out of the Army's long-gestating Land Warrior program.
The Army purchased about 21,000 Rifleman Radios under low-rate initial production between 2012 and 2015.
Army officials maintain that are enough single-channel, handheld radios already produced under the low rate initial production that are sitting waiting to be fielded. The service plans to field another two brigade combat teams per year with the single-channel Rifleman Radios through 2019.
The Army will conduct testing of two-channel radios in 2017 and early 2018 and then down-select to one or two vendors sometime in 2018, Ross said. Operational testing is scheduled for 2019 and fielding will begin in 2020 if all goes as planned, he added.
For now, the Army intends to field four BCTs a year with two-channel handheld radios, Ross said.
Small-unit leaders would then be able to retire the MBITR radio from their kit -- a weight savings of about three pounds, according to Army officials at Program Executive Office Soldier.
"One thing the PEO Soldier is very passionate about is weight -- driving that weight down that the soldier carries," said Lt. Col. Derek Bird, product manager for Ground Soldier Systems, which helps oversee the Nett Warrior program.
"If we can cut three pounds off a soldier by taking two radios and shrinking it to one ⦠that is a big deal."
U.S. Army tactical radio officials plan to launch a competition for a new handheld radio next year that would give soldiers twice the capability of the current Rifleman Radio.
The Army currently uses the single-channel AN/PRC 154A Rifleman Radio as its soldier handheld data radio. It runs the Soldier Radio Waveform, which small-unit leaders use to download and transmit maps, images and texts to fellow infantry soldiers in a tactical environment.
If they want to talk to each other, they often rely on another single-channel handheld -- the AN/PRC 148 MultiBand Inter/Intra Team Radio, or MBITR, which runs the Single Channel Ground and Airborne Radio, or SINCGARS, for voice communications.
The Army plans to release a request-for-proposal in 2017 for a two-channel radio that will allow soldiers to run the Soldier Radio Waveform, or SRW, for data and SINCGARS for voice on one radio, according to Col. James P. Ross, who runs Project Manager Tactical Radios.
The change will mean that soldiers will no longer need the 148 MBITR and be able to rely on the new, two-channel radio for both data and voice communications, Ross said.
"We know industry can meet our requirements. ⦠We know it's achievable," he said.
The move represents a change in strategy for the Army since the service awarded contracts in 2015 to Harris Corporation and Thales for a next-generation version of the Rifleman Radio.
"We went out with a competition for the next generation of the [Rifleman Radio]. Two companies, Harris and Thales, competed," Ross said. "We went through testing, and we were on the verge of being able to buy more of them when the Army said, 'Our strategy now is two-channel.' "
The Army had planned an initial buy of about 4,000 Thales AN/PRC-154B(V)1 radios and Harris AN/PRC-159(V)1 radios, according to Army program documents for fiscal 2015.
"We will not be taking action on those," Ross said.
The current Rifleman Radio was developed as part of the Handheld, Manpack, Small Form Fit, or HMS program. HMS radios are designed around the Army's tactical network strategy to create secure tactical networks without the logistical nightmare of a tower-based antenna infrastructure.
It's also a key part of the Army's Nett Warrior system. It hooks into an Android-based smartphone and gives soldiers in infantry brigade combat teams the ability to send and receive emails, view maps and watch icons on a digital map that represent the locations of their fellow soldiers. The concept came out of the Army's long-gestating Land Warrior program.
The Army purchased about 21,000 Rifleman Radios under low-rate initial production between 2012 and 2015.
Army officials maintain that are enough single-channel, handheld radios already produced under the low rate initial production that are sitting waiting to be fielded. The service plans to field another two brigade combat teams per year with the single-channel Rifleman Radios through 2019.
The Army will conduct testing of two-channel radios in 2017 and early 2018 and then down-select to one or two vendors sometime in 2018, Ross said. Operational testing is scheduled for 2019 and fielding will begin in 2020 if all goes as planned, he added.
For now, the Army intends to field four BCTs a year with two-channel handheld radios, Ross said.
Small-unit leaders would then be able to retire the MBITR radio from their kit -- a weight savings of about three pounds, according to Army officials at Program Executive Office Soldier.
"One thing the PEO Soldier is very passionate about is weight -- driving that weight down that the soldier carries," said Lt. Col. Derek Bird, product manager for Ground Soldier Systems, which helps oversee the Nett Warrior program.
"If we can cut three pounds off a soldier by taking two radios and shrinking it to one ⦠that is a big deal."
Wednesday, February 1, 2017
WiFi Enabled LTE Small Cell Gateway Market to Register a Strong Growth By 2021 - PMR
On paper, connecting walkie talkie radios to a Wifi networkis is the most obvious method of controlling and communicating within a business. But the reality is that there arenât many radios on the market that have the capability to do this and many wifi networks arenât robust enough to manage lots of radios, this article predicts that this technology will be a growth market, we will wait and see.
WiFi enabled LTE small cell gateway is a type of a base station. Base station uses cellular wireless network for communicating with mobile phones or terminals. Base station connects mobile phones to a wireless carrier network and offers local coverage for a wireless network. The area of coverage varies from several miles to few city blocks. Each base station is typically owned by one carrier or wireless company and gives coverage only for that company's network. It may also offer roaming coverage for other networks in case carriers have agreement for roaming and technology is compatible. Base station comprises of an electronic cabinet which connected by means of cables to a group of antennas. The antennas may be mounted on an existing structure or on dedicated tower structure including top of a building, church steeple or smoke-stack and water tower.
In radio communications, base station refers to wireless communications station implemented at a fixed location and used to communicate as wireless telephone system including cellular GSM or CDMA cell site, part push-to-talk two-way radio system, terrestrial trunked radio and two-way radio. A single location often operates several base stations owned by a different carrier. Smaller types of base stations or small cells include picocells, femtocells and microcells. WiFi enabled LTE small cell gateway is promising network element. A wide variety of base station deployments are in a small cell configuration. It has WiFi interface at end-use device and LTE interface at the carrier network.
Small cell is low-powered radio access nodes (operator-controlled) that operate in carrier-grade Wi-Fi (unlicensed) and licensed spectrum. Small cells normally have a range from 10 to numerous hundred meters. Small cell base stations are expected to play vital role in expanding the capacity of wireless networks due to increasing mobile data traffic. Mobile operators are increasingly looking forward to this technology in order to meet the rising demands for data, video and application access generated due to smart phones and other devices. Small cells aid mobile service that detect presence, interact wand connect with existing networks. Small cells offer increased quality of service and flexibility at an affordable cost. Small cell infrastructure implantation is an environmentally friendly approach as it reduces the number of cell towers and offers a cleaner signal using less power.
Rising numbers of wireless carriers or companies are taking dedicated interest in this industry owing to the proliferation of embedded WiFi features in fixed and mobile devices. Growing demand for more advanced handheld devices such as smart-phones and tablets is expected to create demand for technologies with high internet speed. This in turn, is expected to drive the growth of WiFi enabled LTE small cell gateways.
WiFi enabled LTE small cell gateway is a type of a base station. Base station uses cellular wireless network for communicating with mobile phones or terminals. Base station connects mobile phones to a wireless carrier network and offers local coverage for a wireless network. The area of coverage varies from several miles to few city blocks. Each base station is typically owned by one carrier or wireless company and gives coverage only for that company's network. It may also offer roaming coverage for other networks in case carriers have agreement for roaming and technology is compatible. Base station comprises of an electronic cabinet which connected by means of cables to a group of antennas. The antennas may be mounted on an existing structure or on dedicated tower structure including top of a building, church steeple or smoke-stack and water tower.
In radio communications, base station refers to wireless communications station implemented at a fixed location and used to communicate as wireless telephone system including cellular GSM or CDMA cell site, part push-to-talk two-way radio system, terrestrial trunked radio and two-way radio. A single location often operates several base stations owned by a different carrier. Smaller types of base stations or small cells include picocells, femtocells and microcells. WiFi enabled LTE small cell gateway is promising network element. A wide variety of base station deployments are in a small cell configuration. It has WiFi interface at end-use device and LTE interface at the carrier network.
Small cell is low-powered radio access nodes (operator-controlled) that operate in carrier-grade Wi-Fi (unlicensed) and licensed spectrum. Small cells normally have a range from 10 to numerous hundred meters. Small cell base stations are expected to play vital role in expanding the capacity of wireless networks due to increasing mobile data traffic. Mobile operators are increasingly looking forward to this technology in order to meet the rising demands for data, video and application access generated due to smart phones and other devices. Small cells aid mobile service that detect presence, interact wand connect with existing networks. Small cells offer increased quality of service and flexibility at an affordable cost. Small cell infrastructure implantation is an environmentally friendly approach as it reduces the number of cell towers and offers a cleaner signal using less power.
Rising numbers of wireless carriers or companies are taking dedicated interest in this industry owing to the proliferation of embedded WiFi features in fixed and mobile devices. Growing demand for more advanced handheld devices such as smart-phones and tablets is expected to create demand for technologies with high internet speed. This in turn, is expected to drive the growth of WiFi enabled LTE small cell gateways.
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