Monday, April 25, 2022

The Visigoths' Imperial Ambitions - Archaeology Magazine

The Visigoths' Imperial Ambitions - Archaeology Magazine

The Visigoths' Imperial Ambitions

How an unlikely Visigothic city rose in Spain amid the chaotic aftermath of Rome’s final collapse

March/April 2021

Visigoths Reccopolis Church Opener
(Yil Dori)

These ruins of a church were once part of the huge palatine complex in Reccopolis, a rare urban settlement founded by the Visigoths in Spain.

Most historians and archaeologists agree: The sixth century A.D. was not an easy time to be alive. The Western Roman Empire had collapsed in the previous century, plunging much of the continent into economic, political, and social upheaval. On top of this, the first outbreak and frequent recurrence of bubonic plague resulted in the estimated deaths of millions. Making matters even worse, a series of volcanic eruptions caused climatic changes from Britain to China, ushering in a cooling period known as the Late Antique Little Ice Age. Recent studies have indicated that this caused drought, crop failure, breakdown in food supply chains, and famine. Harvard University medieval historian Michael McCormick has gone so far as to characterize the period following a particularly intense volcanic eruption in A.D. 536 as one of the single worst eras in recorded human history.

 

One consequence of this turmoil was that, across most of Europe, many urban centers deteriorated, a process that had begun a few centuries earlier when the Roman state first started to weaken. Cities and towns, once hallmarks of the Roman world and essential instruments of the Roman administrative system, were increasingly abandoned. Masses fled to the countryside seeking survival. Western civilization was irrevocably transformed.

 

However, recent archaeological work in Iberia, on the periphery of the former Roman Empire, conveys a different story. It is revealing how, against this backdrop of chaos, a people emerged who succeeded in founding perhaps the strongest kingdom in the post-Roman world. These were the Visigoths, who had first arrived in Iberia in the A.D. 410s, when Roman rule was crumbling. Over the next two centuries the Visigoths unified a politically fractured landscape, bringing a semblance of stability to a region racked by centuries of violence and uncertainty. They implemented new taxation and legal systems and reestablished trade with the broader Mediterranean world. The Visigoths also did the seemingly impossible—in a largely deurbanized world, they began to build cities. Written sources suggest that the Visigoths founded at least four new urban centers, but only one of them, Reccopolis, can be identified with certainty. It was one of the crowning achievements of King Leovigild (r. A.D. 568–586), perhaps the Visigoths’ greatest ruler. Today, Reccopolis is an unlikely example of a post-Roman urban settlement that arose amid the disorder and uncertainty of sixth-century Europe. “One does not see many new towns founded during this period elsewhere in the Mediterranean,” says McCormick. “It is quite surprising.”

 

Visigoths Reccopolis Leovigild Coin
(Museo Arqueologico Regional Madrid/Mario Torquemada)

A gold coin depicts the Visigothic king Leovigild, who founded Reccopolis in A.D. 578.












The Visigoths' Imperial Ambitions

Reccopolis Visigoths Aerial
(Department of Archaeology, University of Alcalá)

An aerial view of the excavated ruins of Reccopolis shows the remains of the church, the open courtyard, and the administrative buildings of the palatine complex.

The walls and roofs of Reccopolis’ enormous palatine complex once towered high above the countryside, a ubiquitously visible symbol of the rising Visigothic state. Built on the city’s highest ground, this urban district served as the seat of the new Visigothic monarchy and administration. A church, one of the largest in Iberia at the time, was located across a large open plaza. A monumental gateway would have ushered people out of this district and onto a street full of shops and houses. Reccopolis was, by all accounts, a wealthy and vibrant city that was bustling in a way that very few others in Europe were. Yet, less than 250 years later, Reccopolis was nearly empty. Its building materials were hauled away to construct a new settlement, and over the subsequent centuries the once-great Visigothic city disappeared from view, receding into the surrounding agricultural fields.

 

Visigoths Reccopolis Map
(Ken Feisel)

The ruins of Reccopolis were located in the 1890s, but archaeological excavations did not begin until the mid-twentieth century. Work continued sporadically for decades, until interest began to intensify in the 1990s under the leadership of University of Alcalá archaeologist Lauro Olmo-Enciso. For more than two decades, Olmo-Enciso’s projects have continued to uncover parts of the ancient settlement that are not only leading to a new understanding of Visigothic cities, but also to a clearer picture of the physical and political landscape of post-Roman Iberia. “Reccopolis now stands as an exceptional example of early medieval urbanism that challenges our perceptions of urban development in sixth-century Europe,” Olmo-Enciso says. He and his team have learned just how integral urban centers such as Reccopolis were to the rulers of the Visigothic Kingdom, and especially to Leovigild. As it happens, the construction of Reccopolis was a strategic play that the king borrowed from the political handbook used by Roman emperors—the Visigoths’ old rivals—for centuries.

 

Who the Visigoths were and how they became kings of Iberia is a complicated story, the culmination of a journey that took place over hundreds of years and across thousands of miles. The group of people known today as the Visigoths, along with the culturally similar, but geographically separate Ostrogoths, were descended from the nomadic eastern Germanic Gothic tribes who, by the fourth century, had settled on the outskirts of the Roman Empire in modern-day Romania. In A.D. 376, migrations of Huns from the Eurasian steppes drove the Gothic communities across the Danube River and into Roman territory. Initially, the Romans granted them permission to seek refuge within the empire’s borders, but there was little trust on either side as the two groups had clashed regularly for decades along the Danube.

 

The Visigoths and Romans were at times allies, and at other times enemies. Inevitably, their tenuous relationship boiled over, leading to the Visigothic sack of Rome itself in A.D. 410, the first time the city had fallen to a foreign army in 800 years. Although by this time Constantinople, the seat of the Eastern Roman, or Byzantine Empire, was the empire’s most important city, the Visigothic conquest of the Eternal City was a devastating blow, symbolizing the fragility of Roman rule in Western Europe.

 

In need of a homeland, the Visigoths soon settled in southern Gaul, in what is now France, and established a capital in modern-day Toulouse. By the early fifth century, they followed other marauding bands of Germanic barbarian tribes, including the Vandals and Suevi, over the Pyrenees into Iberia, where the Romans had almost completely lost control. After Rome’s final fall in A.D. 476, the Iberian Peninsula descended into a political free-for-all. “Historians and archaeologists imagine it as a welter of more or less autonomous, competing, and sometimes conflicting power centers and city-states,” says McCormick.

Out of this power vacuum, the Visigoths emerged to seize control. In the early sixth century, they lost most of their territory in Gaul to the Franks, but they began to expand and strengthen their hold on the former Roman province of Hispania, fighting a constant string of battles against other Germanic tribes, Hispano-Romano independent city-states, and Byzantine Roman armies who had managed to regain territory in southern Spain. By the final decades of the century, Visigothic forces, led by Leovigild, had proved themselves the dominant regional power. The king now needed a grand gesture to legitimize himself as the sole ruler of a unified Iberia. He also needed a reorganized administrative system to maintain authority over his now-vast territory. Like the Romans before him, he needed cities. So, like the Romans, he dared to build one.

One Visigothic chronicler, John of Biclaro, records that 
Leovigild founded Reccopolis in A.D. 578 and furnished it with “splendid buildings.” Today, the remains of these buildings sit atop a plateau that rises above the banks of the Tagus River in the central Spanish province of Guadalajara. Although Reccopolis is less than a two-hour drive from Madrid, parts of this province have in recent years become some of the most desolate in all of Europe due to financial crises and a dearth of economic opportunities for its rural population. However, 1,400 years ago, the opposite process was underway. The establishment of a Visigothic settlement in the region attracted throngs of people who settled within the new town and formed satellite communities in its vicinity.

Wednesday, April 20, 2022

(Central Banks - Bear Traps - John Authers Column

(no subject) - btbirkett@gmail.com - Gmail

This summary is from Larry McDonald of Bear Traps Report LLC:

The current policy divergence between the a) PBOC (cutting rates, 530B yuan additional liquidity), b) the ECB — wind down net asset purchases this quarter / set for a 2H rate hike — QT out of the question now, c) BOJ aggressive balance sheet expansion, d) Fed promising 9-12 rate hikes looking out a year with QT aggressively involved. This type of insane monetary policy divergence will clearly break something, that is certain — unsustainable.

Tuesday, April 19, 2022

Money Stuff: The Stability of Algorithmic Stablecoins - btbirkett@gmail.com - Gmail

Money Stuff: The Stability of Algorithmic Stablecoins - btbirkett@gmail.com - Gmail

The Sculpture of Rogério Timóteo

The Sculpture of Rogério Timóteo

Brand Director in Orange County, CA — Money Diary

Brand Director in Orange County, CA — Money Diary


MIT Engineers Create the “Impossible” – New Material That Is Stronger Than Steel and As Light as Plastic

MIT Engineers Create the “Impossible” – New Material That Is Stronger Than Steel and As Light as Plastic

MIT Engineers Create the “Impossible” – New Material That Is Stronger Than Steel and As Light as Plastic

TOPICS:Chemical EngineeringMaterials ScienceMITNanotechnologyPopular

By ANNE TRAFTON, MASSACHUSETTS INSTITUTE OF TECHNOLOGY FEBRUARY 3, 2022

Hammer Cell Phone

Stock video to illustrate the concept of a super strong cell phone.

The new substance is the result of a feat thought to be impossible: polymerizing a material in two dimensions.

Using a novel polymerization process, MIT chemical engineers have created a new material that is stronger than steel and as light as plastic, and can be easily manufactured in large quantities.

The new material is a two-dimensional polymer that self-assembles into sheets, unlike all other polymers, which form one-dimensional, spaghetti-like chains. Until now, scientists had believed it was impossible to induce polymers to form 2D sheets.

Such a material could be used as a lightweight, durable coating for car parts or cell phones, or as a building material for bridges or other structures, says Michael Strano, the Carbon P. Dubbs Professor of Chemical Engineering at MIT and the senior author of the new study.

“We don’t usually think of plastics as being something that you could use to support a building, but with this material, you can enable new things,” he says. “It has very unusual properties and we’re very excited about that.”

The researchers have filed for two patents on the process they used to generate the material, which they describe in a paper published in Nature on February 2, 2022. MIT postdoc Yuwen Zeng is the lead author of the study.

Lightweight Material Is Stronger Than Steel

The new material is a two-dimensional polymer that self-assembles into sheets and could be used as a lightweight, durable coating for car parts or cell phones, or as a building material for bridges or other structures. Credit: polymer film courtesy of the researchers; Christine Daniloff, MIT

Two dimensions

Polymers, which include all plastics, consist of chains of building blocks called monomers. These chains grow by adding new molecules onto their ends. Once formed, polymers can be shaped into three-dimensional objects, such as water bottles, using injection molding.

Polymer scientists have long hypothesized that if polymers could be induced to grow into a two-dimensional sheet, they should form extremely strong, lightweight materials. However, many decades of work in this field led to the conclusion that it was impossible to create such sheets. One reason for this was that if just one monomer rotates up or down, out of the plane of the growing sheet, the material will begin expanding in three dimensions and the sheet-like structure will be lost.

However, in the new study, Strano and his colleagues came up with a new polymerization process that allows them to generate a two-dimensional sheet called a polyaramide. For the monomer building blocks, they use a compound called melamine, which contains a ring of carbon and nitrogen atoms. Under the right conditions, these monomers can grow in two dimensions, forming disks. These disks stack on top of each other, held together by hydrogen bonds between the layers, which make the structure very stable and strong.

“Instead of making a spaghetti-like molecule, we can make a sheet-like molecular plane, where we get molecules to hook themselves together in two dimensions,” Strano says. “This mechanism happens spontaneously in solution, and after we synthesize the material, we can easily spin-coat thin films that are extraordinarily strong.”

Because the material self-assembles in solution, it can be made in large quantities by simply increasing the quantity of the starting materials. The researchers showed that they could coat surfaces with films of the material, which they call 2DPA-1.

“With this advance, we have planar molecules that are going to be much easier to fashion into a very strong, but extremely thin material,” Strano says.

Light but strong

The researchers found that the new material’s elastic modulus — a measure of how much force it takes to deform a material — is between four and six times greater than that of bulletproof glass. They also found that its yield strength, or how much force it takes to break the material, is twice that of steel, even though the material has only about one-sixth the density of steel.

Matthew Tirrell, dean of the Pritzker School of Molecular Engineering at the University of Chicago, says that the new technique “embodies some very creative chemistry to make these bonded 2D polymers.”

“An important aspect of these new polymers is that they are readily processable in solution, which will facilitate numerous new applications where high strength to weight ratio is important, such as new composite or diffusion barrier materials,” says Tirrell, who was not involved in the study.

Another key feature of 2DPA-1 is that it is impermeable to gases. While other polymers are made from coiled chains with gaps that allow gases to seep through, the new material is made from monomers that lock together like LEGOs, and molecules cannot get between them.

“This could allow us to create ultrathin coatings that can completely prevent water or gases from getting through,” Strano says. “This kind of barrier coating could be used to protect metal in cars and other vehicles, or steel structures.”

Strano and his students are now studying in more detail how this particular polymer is able to form 2D sheets, and they are experimenting with changing its molecular makeup to create other types of novel materials.

Reference: “Irreversible synthesis of an ultrastrong two-dimensional polymeric material” by Yuwen Zeng, Pavlo Gordiichuk, Takeo Ichihara, Ge Zhang, Emil Sandoz-Rosado, Eric D. Wetzel, Jason Tresback, Jing Yang, Daichi Kozawa, Zhongyue Yang, Matthias Kuehne, Michelle Quien, Zhe Yuan, Xun Gong, Guangwei He, Daniel James Lundberg, Pingwei Liu, Albert Tianxiang Liu, Jing Fan Yang, Heather J. Kulik and Michael S. Strano, 2 February 2022, Nature.
DOI: 10.1038/s41586-021-04296-3

The research was funded by the Center for Enhanced Nanofluidic Transport (CENT) an Energy Frontier Research Center sponsored by the U.S. Department of Energy Office of Science, and the Army Research Laboratory.


Thursday, April 14, 2022

Russian navy evacuates flagship Moskva in Black Sea. Ukraine claims it was hit by a missile - CNN

Russian navy evacuates flagship Moskva in Black Sea. Ukraine claims it was hit by a missile - CNN

...Odesa state regional administrator Maxim Marchenko claimed in a post on Telegram that Ukrainian forces had used Neptune cruises missiles to attack the Moskva. If that's true, the Moskva would potentially be the largest warship ever taken out of action by a missile, Schuster said.
Such an achievement would represent a big advance for Kyiv's forces.
The Neptune is a Ukrainian weapon, developed domestically based on the Soviet KH-35 cruise missile. It became operational in the Ukrainian forces just last year, according to Ukrainian media reports.
f it was used to attack the Moskva, it would be the first known use of the Neptune during the war, according to a post on the website of the Center for International Maritime Security (CIMSEC) from Lt. Cmdr. Jason Lancaster, a US Navy surface warfare officer.
His post for the CIMSEC on Tuesday said the threat posed by mobile shore-based cruise missiles like the Neptune "changes operational behavior" of an enemy.
Russian "ships will operate in ways to minimize the risk of detection and maximize their chances to defend themselves," Lancaster wrote. "These behavioral changes limit Russia's ability to utilize their fleet to their advantage. The added stress of sudden combat increases fatigue and can lead to mistakes."
According to Patalano, the war professor: "It would appear the Russians have learned that the hard way today."
In the CIMSEC post, Lancaster notes the British Royal Navy lost several ships to missiles fired by Argentina during the 1982 Falklands War.
The Moskva also poses symbolic significance to Ukraine as it was one of the ships involved in the famous exchange at Snake Island in February, according to Oleksiy Arestovych, an adviser to Ukrainian President Volodymyr Zelensky.
According to a purported audio exchange in late February, as the Russians approached the Ukrainian garrison on Snake Island, also known as Zmiinyi Island, in the Black Sea, a Russian officer said: "This is a military warship. This is a Russian military warship. I suggest you lay down your weapons and surrender to avoid bloodshed and needless casualties. Otherwise, you will be bombed."
A Ukrainian soldier responded: "Russian warship, go f*** yourself."
    If the Moskva is lost, it would be the second large-sized Russian naval vessel to suffer that fate during Moscow's war with Ukraine.

    Images of Russian trucks say much about its military's struggles in Ukraine - CNN

    Images of Russian trucks say much about its military's struggles in Ukraine - CNN

    ... All these problems only exacerbate the problems facing Moscow in what is already an uphill struggle for its forces given the distances involved.
    Trucks can usually operate up to 90 miles (145 kilometers) from their supply depot, Telenko points out.
    But Ukraine is about the size of Texas, almost 800 miles (1,287 kilometers) wide and 350 miles (563 kilometers) long.
    That means Russia would need to open numerous supply depots inside Ukraine for its troops to advance farther into Ukraine's interior.
    With Moscow already pulling back under fierce Ukrainian resistance that seems like a tall order. Russia is already thought to have lost a substantial number of trucks.
    Building more to replace them could take at least six months, Telenko estimates, by which time more losses would be likely.
    "I don't see how the Russians can maintain their current positions, let alone make any offensive moves with their current truck fleet," he says.
    "Trucks are the backbone of any modern mechanized military force, and if you don't have them you walk."

    Monday, April 11, 2022

    Indoniesia Southeast Asia’s misunderstood giant - btbirkett@gmail.com - Gmail

    Southeast Asia’s misunderstood giant - btbirkett@gmail.com - Gmail

    Bloomberg

    Some countries are known for “punching above their weight,” as a humorous Danish TV clip of President Barack Obama’s bilateral meetings showcased several years ago. Few would disagree that Indonesia, by contrast, punches notably below its weight class.

    The planet’s fourth most populous nation and the largest in the Muslim world, Indonesia is also geographically pivotal. It’s an archipelago so stretched out it’s the equivalent of spanning New York to Anchorage. Linking the Pacific and Indian Oceans, Indonesia straddles the crucial maritime artery on which east Asia’s biggest economies depend for their energy supplies and much of their exports.

    But Indonesia’s 4.3% annual growth rate over the past decade has lagged behind regional neighbors Philippines and Vietnam. And Indonesia’s per-capita GDP of around $4,500 is little more than half that of Thailand’s.

    The central business district of Jakarta, Indonesia  Photographer: Dimas Ardian/Bloomberg

    This week in the New Economy

    The nation of 273 million has struggled mightily with the infrastructure challenges inherent to a country spread across more than 900 inhabited islands, where moving goods and people around is very costly. President Joko Widodo, in office since 2014, has championed construction of new roads, railways and ports, and even a new capital. He’s also set a  grand strategy of upgrading the country’s exports, focusing on refined and processed—rather than raw—commodities.

    The domestic development focus has meant Jokowi, as the president is known, hasn’t invested much time or political capital in foreign policy. Indonesia’s financing needs have, however, dovetailed with Chinese President Xi Jinping’s Belt and Road Initiative, and deepened the Southeast Asian nation’s ties with Beijing. China is by far Indonesia’s biggest trading partner, and in recent years has been its No. 3 investor, behind Singapore and Japan.

    Indonesia has long stood for the idea of a multi-polar world, hosting the Bandung Conference in 1955 that launched the non-aligned movement of nations wary of both Washington and Moscow during the Cold War. 

    That history, and the crucial monetary ties with Beijing, are the backdrop for Jakarta’s reluctance to side with the U.S., western Europe and other countries all over the world in sanctioning Russia over its war on Ukraine. Indeed, the Indonesian government last month signaled plans to invite Vladimir Putin to the Group of 20 summit scheduled for Bali this year. (Indonesia is this year’s rotating head of the group of big developed and emerging countries.)

    Joko Widodo, Indonesia’s president, speaks in a prerecorded video during the United Nations General Assembly last year.  Photographer: Michael Nagle/Bloomberg

    The issue of Putin’s presence threatens to become a new source of tension between Jakarta and Washington. This week, U.S. Treasury Secretary Janet Yellen noted that “I’ve made clear to my colleagues in Indonesia that we will not be participating in a number of meetings if the Russians are there.’’

    Relations with the U.S. weren’t the best to begin with. Jokowi hasn’t visited the White House since President Joe Biden took office, and kept Donald Trump at arm’s length. The latter chilliness was tied to the Republican’s decision to move the U.S. embassy in Israel to Jerusalem—something that sparked protests by thousands of people in the predominantly Muslim nation.

    The risk of deteriorating diplomatic ties with fellow democratic nations over the Russia question comes just as the Indonesian public is growing more skeptical about China. A new survey by the Australia-based Lowy Institute showed only 30% of Indonesians would be in favor of a Chinese firm taking majority control of an Indonesian company. And 60% thought “Indonesia should join with other countries to limit China’s influence.”

    With his nation’s economic recovery just beginning, it’s an awkward moment for Jokowi to risk U.S. pressure over Russia. Booming commodity prices have yielded a rare current-account surplus, supporting the exchange rate. The rupiah has depreciated less than 1% this year against the U.S. dollar, even though its central bank has refrained from raising interest rates while the Federal Reserve has telegraphed sharp hikes. And the stable exchange rate has helped keep inflation below 3%—a fraction of the pace seen in many developed nations.

    Kurt Campbell, the White House’s Asia czar, once said that Indonesia would rank first among countries most important to the U.S., but the least understood. The coming months will test the Biden administration’s ability to play the long game when it comes to this Southeast Asian giant. Chris Anstey