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Long distance Networks

description48 papers
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lightbulbAbout this topic
Long distance networks refer to communication systems that facilitate data transmission over extensive geographical distances, utilizing various technologies such as fiber optics, satellite, and microwave links. These networks are essential for connecting disparate locations, enabling global communication, and supporting internet infrastructure.
lightbulbAbout this topic
Long distance networks refer to communication systems that facilitate data transmission over extensive geographical distances, utilizing various technologies such as fiber optics, satellite, and microwave links. These networks are essential for connecting disparate locations, enabling global communication, and supporting internet infrastructure.

Key research themes

1. How can long-distance wireless communication technologies be optimized for reliable, energy-efficient IoT and broadband connectivity in challenging environments?

This research theme addresses the challenges of implementing long-range wireless networks such as LoRa and WiFi in rural, remote, or obstacle-rich environments. It focuses on optimizing communication parameters, managing interference, and network scalability for IoT applications, as well as enhancing broadband access via wireless technologies as alternatives to wired infrastructure. Reliable, low-power, and cost-effective long-distance connectivity is crucial for enabling IoT proliferation and sustaining broadband services in underserved areas.

Key finding: This study quantifies the impact of Co-Spreading Factor (Co-SF) and inter-SF interference on LoRa network performance. It finds that Co-SF interference severely reduces coverage probability, exacerbated by imperfect... Read more
Key finding: Demonstrated point-to-point WiFi links of up to 382 km using directional antennas and favorable terrain in Venezuela. It highlights overcoming Earth's curvature and Fresnel zone clearance via high-elevation sites and towers,... Read more
Key finding: Extends prior long-range WiFi experiments by establishing a 279 km link in Venezuela and a permanent 133 km testbed in Italy, correlating link performance with environmental factors. It underscores the feasibility of low-cost... Read more
Key finding: Proposes and simulates chordal ring network topologies for wireless broadband to improve bandwidth and reliability over challenging terrains such as rural and forested areas where wired/fiber infrastructure is cost... Read more

2. What are the key strategies for routing and data management in ad-hoc and mobile wireless networks supporting long-distance spatial data collection and geographic information systems (GIS)?

This theme investigates routing protocols, network organization, and data acquisition methods for ad-hoc wireless networks in GIS applications, especially in dynamic or emergency response scenarios. Since mobile sensor nodes and drones collect spatial data in diverse, changing environments, efficient and reliable routing to base stations is critical for transmitting information vital for decision-making and spatial analytics.

Key finding: Analysis of routing challenges in highly dynamic ad-hoc mobile networks supporting GIS data transmission identifies that unpredictable topology changes demand adaptive, resilient routing protocols. The work compares existing... Read more
Key finding: Presents a mobility-aware fuzzy logic hierarchical node clustering protocol for wireless mesh networks to optimize routing and network stability. Simulations with NS3 demonstrate improved cluster head selection and routing... Read more

3. How do archaeological and historical studies of long-distance trade networks provide insights into the socio-economic, cultural, and technological interactions across regions in past societies?

This theme explores archaeological evidence and historical analyses of long-distance trade routes and socio-economic networks from various regions and periods. Studies include trade of goods, beads, and materials across Europe, Asia, Africa, and the Americas, revealing complex interactions and cultural dynamics. Methodologies involve material analyses, dendroarchaeological data, and network theory to understand exchange systems, social capital, and integration processes historically.

Key finding: Documents 16th-century long-distance trade networks of Prague Jews linking to Bavarian and Austrian markets via Nuremberg. Despite restrictive regulations, merchants maintained enduring business relations, evidencing the... Read more
Key finding: Through chemical analyses, identifies high-alumina glass beads found in Scandinavia with compositional links to South and Southeast Asia's bead production traditions, providing archaeological evidence of early medieval... Read more
Key finding: Critically evaluates the use of socio-economic theories in historical analyses of early modern long-distance trade, highlighting definitional inconsistencies and advocating for nuanced interpretation that prioritizes... Read more
Key finding: Integrates dendrochronology-derived timber provenance with route network modeling to reconstruct shifting timber transport and exchange networks in Roman and early-medieval Netherlands. Finds temporal changes in source... Read more
Key finding: Combines technological, use-wear, and chemical analyses to characterize bead production and pigment use on early Holocene beads, revealing complex ornamental traditions with evidence of multi-origin raw materials and pigment... Read more

All papers in Long distance Networks

Ethnographic and archaeological cross cultural data from California and the South Pacific show two main categories of beads and ornaments were commonly identified as jewelry and money which had different elements of form and context.... more
Ethnographic and archaeological data from California and the South Pacific shows two common categories of ornamentation are identified that have standard elements of form and function. These elements are compared with Paleolithic data... more
This study focuses on the issue of long-distance trade of Prague Jews during the 16th century which was oriented towards today’s Bavaria and the Austria, namely to marketplaces in Linz and Krems. In the long term, the imperial town of... more
Bereits bei der ersten gezielten Ausgrabung im Salzbergwerk Hallstatt im Jahre 1846 fiel die hervorragende Erhaltung der gefundenen prähistorischen Gegenstände aus organischem Material auf. Die Untersuchungen der Prähistorischen Abteilung... more
In a research project on glass from the Viking Age market in Ribe, southwestern Jutland, Denmark,1 nearly 200 samples of raw glass, mosaic tesserae, vessel fragments, waste from bead production and finished beads were analysed by laser... more
Ecuador is a key area in South America when it comes to understanding the economic, social and archaeological aspects of pre-Hispanic cultures in the northwestern region of the Andes. Among the most complex societies to have inhabited... more
The paper presents an extraordinary new find from the site of Velika Humska Čuka near Niš, in Southeastern Serbia. During the 2022 excavation campaign, a set of bronze jewelry was discovered, comprised of a pin, a band, ten salteleons,... more
T. J. Brestel, [Rez. zu] L. Zamboni/M. Fernández-Götz/C. Metzner-Nebelsick (Hrsg.), Crossing the Alps: Early Urbanism between Northern Italy and Central Europe (900-400 BC) (Leiden 2020). Arch. Inf. 46, 2024, o. Seitenzahl.
Two thousand years ago, maritime trade flourished in Southeast Asia and archaeological excavations have revealed that Island Southeast Asia played an important role within developing trading networks. The sites of Sembiran and Pacung on... more
The paper presents an extraordinary new find from the site of Velika Humska Čuka near Niš, in Southeastern Serbia. During the 2022 excavation campaign, a set of bronze jewelry was discovered, comprised of a pin, a band, ten salteleons,... more
2016 anmälde metallsökaramatören Robert Bytner att han hade hittat två holkyxor och ett mindre bronsfragment tillsammans i Tumba. Fragmentet visade sig senare tillhöra en holkmejsel. Typologiskt hör fyndkombinationen hemma i bronsålderns... more
Tra le zona di frontiera spicca il Canton Ticino settentrionale, in particolare la necropoli di Madrano, ai piedi del Gottardo. Le sue tombe ricche di fibule smaltate denunciano rapporti stretti con il centro Europa, mentre altre fibule... more
Inledning Svarta rödstjärten Phoenicurus ochruros expanderade långsamt norrut i Europa under 1800-talet. I södra och mellersta Tyskland var den en vanlig häckfågel redan i mitten av århundradet. I Nordtyskland betecknades den däremot ännu... more
Uppsatsen diskuterar musikarkeologiska och arkeologiska perspektiv på fragmentet av en bronslur som hittades i byn Åsle, Västergötland.
Long-distance contacts of the Netolice Area in the Early Middle Ages. The evidence of coins and ornaments. In this text, we present five extraordinary metal finds from the area of Netolice, the Prachatice District, dated to the period... more
802.11 WiFi technology is commonly used for creating wireless networks with a range of about one hundred meters. With careful planning and proper antennas, this same equipment can be used to make point-to-multipoint links of tens of... more
The projects have met the set goals with the exception of the relation to amounts of the critical metals used in Sweden. There was too little information available to make this comparison.
by Ambra Calo and 
1 more
The Indonesian Archipelago extends over 5000 km of latitude, from 95°E to 141°E, and hosts some of the world's largest active metal mines. While some fascinating ethnographic and historical sources exist, virtually nothing is known of the... more
Studies of trade routes across Southeast Asia in prehistory have hitherto focused largely on archaeological evidence from Mainland Southeast Asia, particularly the Thai Peninsula and Vietnam. The role of Indonesia and Island Southeast... more
edited by Brigitta Hauser-Schäublin and I Wayan Ardika T villages on Bali’s north-east coast have a long history. Archaeological finds have shown that the coastal settlements of Tejakula District enjoyed trading relations with India as... more
This paper presents data on two new species for Sweden, Carulaspis minima and Pulvinaria regalis. Although C. minima has never been found in Sweden, records from the US Plant Quarantine testify that specimens of this insect were present... more
Rescue excavations in Prohear, southeast Cambodia, recently saved the last untouched graves of one of the richest prehistoric sites in Southeast Asia. Many Iron Age burials dating from the 2nd century BC to the 1st century AD contained... more
Rescue excavations in Prohear, southeast Cambodia, recently saved the last untouched graves of one of the richest prehistoric sites in Southeast Asia. Many Iron Age burials dating from the 2nd century BC to the 1st century AD contained... more
Substansen togs bort från och med 2004 av besparingsskäl då den endast påträffats vid ett enda tillfälle. # Substansen återinfördes efter att ha varit borttagen under året innan. Tabell 6. Antal prov per år och antal analyserade... more
Rapport över metallsökning 2018 intill den medeltida stadslämningen vid Kastellegården-Kungahälla, Ytterby, Bohuslän.
En analys av möjligen använda huggverktyg vid byggnadet av Alvastra pålbyggnad Kandidatuppsats i laborativ arkeologi Stockholms Universitet HT 2012 Abstract: This paper deals with the question of with witch tools the Alvastra pile... more
Hasslefyndet kastar ljus över kontaktvägar, metallanvändning och offerskick under bronsålderns slutskede Genom de tusentals bronsföremål från bronsåldern som har påträffats i Sverige kan vi se spår efter bronsåldersmänniskornas... more
In the days of the Late Roman Empire, the Limes Moesiae followed the course of the Lower Danube. A Roman road, the Via Istrum, ran along the southern bank of the river, linking legion camps, forts, watchtowers, signal posts and stations,... more
Studies with primary focus on Viking age gilding techniques in Scandinavia has not been carried out since the sixties. During the past 50 years knowledge about prehistoric gilding techniques and traces of them in the archeological... more
The muscularii, the men of the musculorum/musculariorum units, have been considered at times to be either siege engineers or marines in small boats. This paper examines all of what little is known about the units, and proposes for the... more
Skålgropsmiljön vid Ekedalsskolan, Gustavsbergs socken, Uppland. - Cup marks at Ekedal, Gustavsberg parish, Uppland, Sweden.
An essay on the archaeological work of Dr. Jorge G. Marcos (Revised).
A short, critical biography of the life and contributions of one of the foremost archaeologists from Ecuador.
We undertook an extensive literature review of the distribution of the variscite and other green stone adornments across Western Spain. This region has a crucial importance for the understanding of this phenomenon, since two of the three... more
å länge de mäktiga järnbruken ännu var i drift, långt fram i historisk tid, fraktade ångbåtar malm och tackjärn på Tämnarån, ständigt fram och tillbaka mellan Strömsbruk, Fors och Ullfors. Då sjöd ån av liv. Båtarna stävade fram och... more
Taiwan Beijing 0 km 2000 N Taiwan presents a puzzling anomaly in the development and expansion of South and Southeast Asian trade routes. The lack of historical records from the island emphasises the value of archaeology for understanding... more
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