Monday, July 18, 2011
Biofuel for flights
"Lufthansa, Europe's second-largest airline, became the first carrier in the world to offer regular scheduled flights running on biofuel, with four daily round trips between Hamburg and Frankfurt.
The airline will use a biofuel blend using 50 per cent so- called hydrotreated renewable jet fuel, Lufthansa said. The fuel is made from feedstocks including inedible plants and wood chips. Lufthansa will fly an Airbus A321 on the services." Read more
http://www.smh.com.au/travel/travel-news/lufthansa-begins-worlds-first-regular-biofuel-flights-20110718-1hks1.html
Harappa
An interesting problem concerning the development of writing systems, is the following: where had they first appeared? Probably, writing systems developed independently in at least three places, Egypt , Mesopotamia and Harappa . In places where an agricultural civilization flourished, the passage from the use of symbols to a true writing system was early accomplished. It means that, at certain period in some densely populated area, signs and symbols were eventually used to create a writing system, the more complex society requiring an increase in recording and communication media.
On Harappa culture see http://www.mongabay.com/reference/country_studies/india/all.html
The earliest signs of human activities in India go back to the Palaeolithic Age, roughly between 400,000 and 200,000 B.C. Stone objects and cave paintings from this period have been discovered in many parts of the South Asia . Evidence of domestication of animals, agriculture, permanent village settlements, and wheel-turned pottery, dating from the middle of the sixth millennium B.C., has been found in Sindh and Baluchistan, (both in Pakistan) Indus River valley in Punjab and Sindh.
The remains of two major cities - Mohenjo-daro and Harappa - reveal remarkable urban planning, systems of water supply and drainage. Excavations at these sites and later archaeological digs at about seventy other locations in India and Pakistan provide the knowledge of what is now generally known as the Harappan culture (2500-1600 B.C.).
The major cities contained a few large buildings including a citadel, a large bath, flat-roofed brick houses, fortified administrative or religious centers having meeting halls and granaries. Essentially a city culture, Harappa civilization flourished because it was supported by a solid agricultural production and by the commerce, which included trade with Sumer inMesopotamia . The people made tools and weapons from copper and bronze but not iron. Cotton was woven and dyed for clothing. Wheat, rice, and several vegetables and fruits were cultivated. A number of animals, including the humped bull, were domesticated. The scholars consider the Harappan culture as conservative, because it seems that it remained relatively unchanged for centuries: for instance, when the villages were rebuilt after flooding, the new constructions closely followed the previous ones. Stability seems then to have been one of the features of this civilization, but it is not yet clear who had the power, whether an aristocracy of priests or the community of traders.
Interesting artifacts of Harappa are steatite seals. These small, flat, squared objects with human or animal motifs provide a picture of the Harappan life. They also have inscriptions generally thought to be in the Harappan script, which has eluded the scholarly attempts at deciphering it. There is a large debate whether these signs represent numbers or are an alphabet. If there is an Harappan alphabet is proto-Dravidian or proto-Sanskrit?
A possible reasons for the decline of civilization of Harappa was the i nvasions from central and western Asia, destroyers of Harappan cities. Other causes were several recurrent floods, earthquakes, the increases of soil salinity and desertification.
Let me compare in the following figures, a small terracotta elephant head from Harappa and a representation of Ganesha (Museo Arti Orientali, Torino), and a small statue form Mohenjo-Daro
For more references on the problem of Harappa writing system, see
“Icons and signs for the ancient Harappa ”, http://cogprints.org/6179/
Sunday, July 17, 2011
Volcanoes under Antarctic waters
"Scientists from British Antarctic Survey (BAS) have discovered previously unknown volcanoes in the ocean waters around the remote South Sandwich Islands. Using ship-borne sea-floor mapping technology during research cruises onboard the RRSJames Clark Ross, the scientists found 12 volcanoes beneath the sea surface — some up to 3km high. They found 5km diameter craters left by collapsing volcanoes and 7 active volcanoes visible above the sea as a chain of islands."
More http://www.antarctica.ac.uk/press/press_releases/press_release.php?id=1541
More http://www.antarctica.ac.uk/press/press_releases/press_release.php?id=1541
Saturday, July 16, 2011
The Lady of Introd
Notizia ANSA
Trovato in Valle d'Aosta scheletro donna di 5.000 anni fa. Contemporanea di Oetzi, l'uomo del Similaun, ritrovato nel '91 l confine tra l'Italia e il Tirolo austriaco. E' ora chiamata la Signora di Introd, 16 luglio, 2011.
Found in Valle d'Aosta the skeleton of a woman, lived 5,000 years ago. She was contemporary of Oetzi the Iceman, discovered in '91 at the Italian border with Austria. She is called the "Lady of Introd", July 16, 2011.
"La Stampa"
http://multimedia.lastampa.it/multimedia/in-italia/lstp/65668/
E' stata soprannominata la "Signora di Introd" e dopo 5000 anni la sua sepoltura è ancora perfetta. Lo scheletro di questa donna ancora misteriosa e ancora senza età, è stata ritrovato all’interno di una tomba ad Introd, paese alpino di poco più di 600 abitanti, non lontano da Aosta. Rannicchiata sul fianco destro e con il capo rivolto a nord ovest, non ha attorno nessun oggetto di corredo funebre. I resti della signora sono già stati trasferiti in laboratorio, dove nei prossimi giorni saranno oggetto di analisi approfondite per determinarne l'età, le abitudini alimentari e la causa di morte. L’Assessore all’Istruzione e Cultura Laurent Viérin esprime“grande soddisfazione per questo importante ritrovamento, unico nel suo genere, che testimonia la ricchezza e la qualità del patrimonio archeologico valdostano e della nostra storia.”
She is the "Lady of Introd" and 5000 years after the burial her skeleton is still perfect. This woman is a mystery and her age has yet to be determined. She was found in a tomb, at Introd, a mountain village with 600 inhabitants, not far from Aosta. Huddled on her right side and with the head facing west, no objects had accompanied her burial place. The remains of the woman have already been transferred in a laboratory, where, over the next few days, it will be determined the age, habits and cause of death. The Head of the Education and Culture Council, Laurent Vierin, told that there is a great satisfaction for this important and unique discovery, demonstrating the abundance and quality of the archaeological heritage of the Aosta Valley.
Trovato in Valle d'Aosta scheletro donna di 5.000 anni fa. Contemporanea di Oetzi, l'uomo del Similaun, ritrovato nel '91 l confine tra l'Italia e il Tirolo austriaco. E' ora chiamata la Signora di Introd, 16 luglio, 2011.
Found in Valle d'Aosta the skeleton of a woman, lived 5,000 years ago. She was contemporary of Oetzi the Iceman, discovered in '91 at the Italian border with Austria. She is called the "Lady of Introd", July 16, 2011.
"La Stampa"
http://multimedia.lastampa.it/multimedia/in-italia/lstp/65668/
E' stata soprannominata la "Signora di Introd" e dopo 5000 anni la sua sepoltura è ancora perfetta. Lo scheletro di questa donna ancora misteriosa e ancora senza età, è stata ritrovato all’interno di una tomba ad Introd, paese alpino di poco più di 600 abitanti, non lontano da Aosta. Rannicchiata sul fianco destro e con il capo rivolto a nord ovest, non ha attorno nessun oggetto di corredo funebre. I resti della signora sono già stati trasferiti in laboratorio, dove nei prossimi giorni saranno oggetto di analisi approfondite per determinarne l'età, le abitudini alimentari e la causa di morte. L’Assessore all’Istruzione e Cultura Laurent Viérin esprime“grande soddisfazione per questo importante ritrovamento, unico nel suo genere, che testimonia la ricchezza e la qualità del patrimonio archeologico valdostano e della nostra storia.”
She is the "Lady of Introd" and 5000 years after the burial her skeleton is still perfect. This woman is a mystery and her age has yet to be determined. She was found in a tomb, at Introd, a mountain village with 600 inhabitants, not far from Aosta. Huddled on her right side and with the head facing west, no objects had accompanied her burial place. The remains of the woman have already been transferred in a laboratory, where, over the next few days, it will be determined the age, habits and cause of death. The Head of the Education and Culture Council, Laurent Vierin, told that there is a great satisfaction for this important and unique discovery, demonstrating the abundance and quality of the archaeological heritage of the Aosta Valley.
Friday, July 15, 2011
Fotografías de Hiram Bingham en Machu Picchu
La National Geographic Society ha donado un histórico material que muestra a la ciudadela entre 1911 y 1915, perennizada para el mundo en el lente de explorador norteamericano.
Ministerio de cultura exhibe fotografías de Hiram Bingham en Machu PicchuSource: ConNuestroPeru
santuario arqueológico de Pachacamac
"El Santuario Arqueológico Pachacamac fue declarado como Patrimonio Cultural de la Nación mediante Ley Nº 6634, promulgada el año 1929, y cuenta con plano de delimitación aprobado por Resolución Directoral Nacional N° 085/INC de fecha 19 de enero de 2007.
Las invasiones a los sitios arqueológicos son un delito contra el Patrimonio Cultural de la Nación y son sancionadas con pena de cárcel, de acuerdo a lo estipulado en el Título VIII del Código Penal. "
Ministerio de Cultura alerta sobre posible invasión a santuario arqueológico de PachacamacLas invasiones a los sitios arqueológicos son un delito contra el Patrimonio Cultural de la Nación y son sancionadas con pena de cárcel, de acuerdo a lo estipulado en el Título VIII del Código Penal. "
Source: ConNuestroPeru
Desert kites and stone circles
Stone structures in the Syrian Desert - by Amelia Carolina Sparavigna, Dipartimento di Fisica,
Politecnico di Torino, Torino, Italy
We usually imagine our ancestors, before they settle down, as people simply hunting and gathering for food, but this is not true. The "desert kites" are the remains of an ancient hunting technique based on stone-walled traps, the construction of which surely involved several people for long times. The desert kites were used to push large herds of animals into some enclosures, or, in the worse case, to fall off from steep cliff edges [4]. The simplest structure of a desert kite has a triangular shape, consisting of two long, low walls built of stones and arranged in a V-shape, like a funnel, ending as a corral. Hunters pushed the game between the walls, trapping then the animals into the end of the structure. It is usually considered that the animals were there slaughtered "en masse" [4-7]. The fauna remains found in these sites are including gazelles, Arabian oryxes and other species that are now rare or driven to extinction in the Levant [4]. A research at the Mesopotamian site of Tell Kuran, found what seems to be a deposit from a mass kill. According to [6], it was the overuse of desert kites a possible cause of extinction of several species.
Fig.2: A landscape with desert kites and other stone structures (Jordan). This is an image adapted from the Google Maps. The visibility of marked areas has been adjusted with image processing software.
Typically, a desert kite possesses two, three or more small circular enclosures on the edge of its corral (in Fig.1 a wonderful structure as it can be observed with Google Maps, other examples in Fig.2 and 3). Some ancient rock art images show these hunting traps [8], depicting the role of the 'walls' of the kites. ...
Politecnico di Torino, Torino, Italy
Paper published on ARCHAEOGATE http://www.archaeogate.org/
Here I am reporting a part of my paper, with some figures. To read the complete article, visit the link
An arid land, known as the Syrian Desert, is covering a large part of the Middle East, extending from the northern Arabian Peninsula to the eastern Jordan, southern Syria, and western Iraq. In the past, this harsh environment characterized by huge lava fields, the "harraat" [1], was considered as a formidable barrier between Levant and Mesopotamia. This desert possesses two volcanic regions: one is the Jabal al-Druze in As-Suwayda Governorate, the other field is the Harrat Ash Shaam in South Syria, south-east of Damascus [2,3]. When we observe these huge harraat from space, using for instance the Google Maps, we discover that they are crossed by several stone structures, known as "desert kites", which were the Neolithic stone traps for the game. These structures were firstly observed by the pilots of the Royal Air Force in the 1920s, flying over the desert. The pilots named them "kites", because these lines reminded of kites used by children to play [4]. Beside the kites, many stone circles are visible too, as many Stonehenge sites dispersed in the desert landscape. Probably, this harsh environment was friendlier and then quite populated in ancient times.
We usually imagine our ancestors, before they settle down, as people simply hunting and gathering for food, but this is not true. The "desert kites" are the remains of an ancient hunting technique based on stone-walled traps, the construction of which surely involved several people for long times. The desert kites were used to push large herds of animals into some enclosures, or, in the worse case, to fall off from steep cliff edges [4]. The simplest structure of a desert kite has a triangular shape, consisting of two long, low walls built of stones and arranged in a V-shape, like a funnel, ending as a corral. Hunters pushed the game between the walls, trapping then the animals into the end of the structure. It is usually considered that the animals were there slaughtered "en masse" [4-7]. The fauna remains found in these sites are including gazelles, Arabian oryxes and other species that are now rare or driven to extinction in the Levant [4]. A research at the Mesopotamian site of Tell Kuran, found what seems to be a deposit from a mass kill. According to [6], it was the overuse of desert kites a possible cause of extinction of several species.
Fig.1. The wonderful structure of a “desert kite”(Jordan), as it can be observed with Google Maps.
Fig.2: A landscape with desert kites and other stone structures (Jordan). This is an image adapted from the Google Maps. The visibility of marked areas has been adjusted with image processing software.
Fig.3: Desert kites. The images have been adapted from the Google Maps. The visibility of the stone strctures has been adjusted with image processing software.
Typically, a desert kite possesses two, three or more small circular enclosures on the edge of its corral (in Fig.1 a wonderful structure as it can be observed with Google Maps, other examples in Fig.2 and 3). Some ancient rock art images show these hunting traps [8], depicting the role of the 'walls' of the kites. ...
....
As we discussed in the paper on Arabia [11], an interesting fact is necessary to note [8]. In the Khaybar area, Arabia, there are some remains of Neolithic villages very close to the hunting desert kites. Linking the "desert kites" with "human villages" could be a mistake, because wild animals are avoiding places where people live. Since the Khaybar area is full with ancient burial structures, sometimes placed inside the desert kites, a possible conclusion is that these burial mounds are more recent than the desert kites [8]. Because this conclusion is coming from the observation of satellite images, it seems that the satellites, and in particular the Google Maps, can help the archaeological researches providing a portrait of the human collective activities in the early stages of civilization.
Even the Syrian Desert is dispersed with circular stone structures and mounds, sometimes inside or near the desert kites (see Fig.2 for instance). On these earlier human settlements, news was announced last year that Robert Mason, archaeologist of the Royal Ontario Museum, discovered what we can define as a Syrian Stonehenge [12]. The site, near the Deir Mar Musa al-Habashi monastery, is composed by some tombs and stone circles. From the stone tools he found there, it's likely that the structure dates from the Middle East's Neolithic Period, roughly ranging from 8500 BC to 4300 BC. In Western Europe, the first structures built of stone date back approximately to 4500 BC. The Syrian site is then quite older than the European sites. Edward Banning of the University of Toronto says that more fieldwork is necessary because it is possible that the landscape that Robert Mason has identified could be an example, in the Neolithic period, of burial practices out of the settlement, that is, an off-site cemetery [12].
The report in [12] is continuing with a suggestion by Julian Siggers, of the Royal Ontario Museum. Remembering that agriculture spread from the Near East to Europe, he is proposing the possibility that the stone landscapes, that is the creation of stone circles, had travelled with agriculture. On the other hand, Banning is replying that stone structures are found throughout the world and that people in Western Europe could have developed the stone landscapes independently of the people in Middle East. According to Edward Banning, the site studied by Mason is not unique [12,13]. "Archaeologists have detected, via satellite photos, what appear to be cairns and stone circles in other areas, including the deserts of Jordan and Israel. However, he admits that most of these things have not received a lot of archaeological investigation."
....
References
1. In Arabic, the lava fields are the harraat, sing. harrah; before a name, harrat.
2. Jabal al-Druze Volcanic Field in Southern Syria – May 16th, 2010, http://www.eosnap.com/image-of-the-day/jabal-al-druze-volcanic-field-in-southern-syria-may-16th-2010/
3. Global Volcanic Program, Es-Safa, http://www.volcano.si.edu/world/volcano.cfm?vnum=0300-05-
4. Mysterious desert lines were animal traps, Larry O'Hanlon, Apr 20, 2010, http://news.discovery.com/history/desert-lines-hunting-tool-kites.html
5. Desert Kites, Ancient Hunting Technique Desert Kites, K. Kris Hirst, About.com Guide, http://archaeology.about.com/od/dathroughdeterms/qt/Desert-Kites.htm
6. Role of mass-kill hunting strategies in the extirpation of Persian gazelle (Gazella subgutturosa) in the northern Levant, Guy Bar-Oz, Melinda Zeder, Frank Hole, Proceedings of the National Academy of Sciences, Early Edition, May 3, 2011, vol. 108, no. 18, 7345-7350, doi:10.1073/pnas.1017647108,
7. Gazelles caught in ancient Syrian 'killing zones', Jonathan Amos, BBC News, 19 April 2011.
8. Khaybar Desert Kites, Vanja Janežic, alsahra.org/wp-content/uploads/2009/02/khaybar-desert-kites.pdf, see also http://www.megalithic.co.uk/article.php?sid=2146412866
9. The function of "Desert Kites" - Uniting or livestock husbandry? B. Rosen, A. Perevolotsky, Paléorient, Vol.24, Pag. 107-111, 1998.
10. The Desert "Kites" of the Badiyat Esh-Sham and North Arabia, A.V.G. Betts, S. Helms, Paléorient, Vol.13, Pag. 41-67, 1987.
11. Arabia: from craters to stone circles, Amelia Carolina Sparavigna, Archaeogate, 19-11-2010, and also, http://arxiv.org/abs/1011.2111
12. Syria's Stonehenge: Neolithic stone circles, alignments and possible tombs discovered, Owen Jarus, Monday, 1 March 2010, The Independent, http://www.independent.co.uk/life-style/history/syrias-stonehenge-neolithic-stone-circles-alignments-and-possible-tombs-discovered-1914047.html
13. A web-site, 27 March 2011, http://www.stonepages.com, published the news of a 11,000-year-old settlement unearthed in Syria. A Syrian-French archaeological mission unearthed a small village in the archaeological site of Tel Qarasa in the west of Swaida province dating back to around 11,000 years. The search conducted at the site over the last two years allowed the archaeologists to discover a tiny village of 8 round houses whose inhabitants depended on fishing and growing cereal crops and wild fruits for their living. The Syrian-French mission said the excavations have revealed 522 archaeological sites in al-Lajat region from the ancient historical periods of the 7th millennium BCE, among which was Tel Qarasa.
14. More images at https://sites.google.com/site/syriandesertsatelliteimagery/
15. According to Wikipedia, desert kites and stone circles can be considered as Petroforms.
Fig. 5: Other stone circles in Syrian Desert. The images have been adapted from the Acme Mapper.
Fig. 6: Stone landscape in Syrian Desert. The images have been adapted from the Google Maps. Note the “dots” that are surrounding the circular complexes.
The report in [12] is continuing with a suggestion by Julian Siggers, of the Royal Ontario Museum. Remembering that agriculture spread from the Near East to Europe, he is proposing the possibility that the stone landscapes, that is the creation of stone circles, had travelled with agriculture. On the other hand, Banning is replying that stone structures are found throughout the world and that people in Western Europe could have developed the stone landscapes independently of the people in Middle East. According to Edward Banning, the site studied by Mason is not unique [12,13]. "Archaeologists have detected, via satellite photos, what appear to be cairns and stone circles in other areas, including the deserts of Jordan and Israel. However, he admits that most of these things have not received a lot of archaeological investigation."
....
References
1. In Arabic, the lava fields are the harraat, sing. harrah; before a name, harrat.
2. Jabal al-Druze Volcanic Field in Southern Syria – May 16th, 2010, http://www.eosnap.com/image-of-the-day/jabal-al-druze-volcanic-field-in-southern-syria-may-16th-2010/
3. Global Volcanic Program, Es-Safa, http://www.volcano.si.edu/world/volcano.cfm?vnum=0300-05-
4. Mysterious desert lines were animal traps, Larry O'Hanlon, Apr 20, 2010, http://news.discovery.com/history/desert-lines-hunting-tool-kites.html
5. Desert Kites, Ancient Hunting Technique Desert Kites, K. Kris Hirst, About.com Guide, http://archaeology.about.com/od/dathroughdeterms/qt/Desert-Kites.htm
6. Role of mass-kill hunting strategies in the extirpation of Persian gazelle (Gazella subgutturosa) in the northern Levant, Guy Bar-Oz, Melinda Zeder, Frank Hole, Proceedings of the National Academy of Sciences, Early Edition, May 3, 2011, vol. 108, no. 18, 7345-7350, doi:10.1073/pnas.1017647108,
7. Gazelles caught in ancient Syrian 'killing zones', Jonathan Amos, BBC News, 19 April 2011.
8. Khaybar Desert Kites, Vanja Janežic, alsahra.org/wp-content/uploads/2009/02/khaybar-desert-kites.pdf, see also http://www.megalithic.co.uk/article.php?sid=2146412866
9. The function of "Desert Kites" - Uniting or livestock husbandry? B. Rosen, A. Perevolotsky, Paléorient, Vol.24, Pag. 107-111, 1998.
10. The Desert "Kites" of the Badiyat Esh-Sham and North Arabia, A.V.G. Betts, S. Helms, Paléorient, Vol.13, Pag. 41-67, 1987.
11. Arabia: from craters to stone circles, Amelia Carolina Sparavigna, Archaeogate, 19-11-2010, and also, http://arxiv.org/abs/1011.2111
12. Syria's Stonehenge: Neolithic stone circles, alignments and possible tombs discovered, Owen Jarus, Monday, 1 March 2010, The Independent, http://www.independent.co.uk/life-style/history/syrias-stonehenge-neolithic-stone-circles-alignments-and-possible-tombs-discovered-1914047.html
13. A web-site, 27 March 2011, http://www.stonepages.com, published the news of a 11,000-year-old settlement unearthed in Syria. A Syrian-French archaeological mission unearthed a small village in the archaeological site of Tel Qarasa in the west of Swaida province dating back to around 11,000 years. The search conducted at the site over the last two years allowed the archaeologists to discover a tiny village of 8 round houses whose inhabitants depended on fishing and growing cereal crops and wild fruits for their living. The Syrian-French mission said the excavations have revealed 522 archaeological sites in al-Lajat region from the ancient historical periods of the 7th millennium BCE, among which was Tel Qarasa.
14. More images at https://sites.google.com/site/syriandesertsatelliteimagery/
15. According to Wikipedia, desert kites and stone circles can be considered as Petroforms.
Fig. 4: A stone circle in Syrian Desert. The images have been adapted from the Google Maps.
Thursday, July 14, 2011
Abusir - from Pliny the Elder to Google Maps
Abusir: from Pliny the Elder to Google Maps
Amelia Carolina Sparavigna, Dipartimento di Fisica, Politecnico di Torino, Torino, Italy
"Abusir, the House of Osiris, is the name given to an Egyptian necropolis of the Old Kingdom period. This site is a part of a huge area, from Giza to Dahshur, rich of archaeological remains and covered by many pyramids. The paper is reporting concisely some archaeological studies on Abusir. We start from the description given by Pliny the Elder and end proposing the use of Google Maps."
"Abusir, the House of Osiris, is the name given to an Egyptian necropolis of the Old Kingdom period. This site is a part of a huge area, from Giza to Dahshur, rich of archaeological remains and covered by many pyramids. The paper is reporting concisely some archaeological studies on Abusir. We start from the description given by Pliny the Elder and end proposing the use of Google Maps."
Read more
Map of Abusir
In the upper part of the figure, we see an image from Google Maps, obtained after a suitable image processing, showing the Abusir site. In the lower part, a map from http://en.wikipedia.org/wiki/Abusir, for comparison.
An acoustic superlens from a few cans of cola
""Acoustic metamaterial" may sound exotic, but researchers in France have managed to assemble one from a few multipacks of cola cans. Arranged in a grid, the drinks cans act as a superlens for sound, focusing acoustic waves into much smaller regions than their metre-long wavelengths typically allow. The cans act as resonators, directing the volume of the sound to peak in a space just a few centimetres wide, and this heightened precision could improve acoustic-actuator systems."
How to make a superlens from a few cans of cola - physicsworld.com
Wearable Sensors for Remote Healthcare
| Using Wearable Sensors for Remote Healthcare Monitoring System |
| A. P. Abidoye, N. A. Azeez, A. O Adesina, K. K Agbele, H. O. Nyongesa |
| KEYWORDS: Wireless Sensor Networks, Wireless Body Area Networks, ZigBee/IEEE 802.15.4, PDA, 3G, Medical Server |
Recent technological advances in wireless communications and wireless sensor networks have enabled the design of low-cost, intelligent, tiny, and lightweight medical sensor nodes that can be strategically placed on human body, create a wireless body area network (WBAN) to monitor various physiological vital signs for a long period of time and providing real-time feedback to the user and medical staff. WBANs promise to revolutionize health monitoring. In this paper, medical sensors were used to collect physiological data from patients and transmit it to Intelligent Personal digital Assistant (IPDA) using ZigBee/IEEE802.15.4 standard and to medical server using 3G communications. We introduced priority scheduling and data compression into the system to increase transmission rate of physiological critical signals which improve the bandwidth utilization. It also extends the life time of hand-held personal server by reducing power consumption during transmission. On the journal Journal of Sensor Technology |
ISSN Online: 2161-1238
Website: http://www.scirp.org/journal/jst