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The singularity probability of a random symmetric matrix is exponentially small

Marcelo Campos, Matthew Jenssen, Marcus Michelen and Julian Sahasrabudhe
J. Amer. Math. Soc. 38 (), 179-224.
Abstract, references and article information






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China's Party Congress: a dose of foreign policy realism is needed

China's Party Congress: a dose of foreign policy realism is needed The World Today mhiggins.drupal 11 October 2022

In the final article of three on the 20th Chinese Communist Party Congress, which opens on 16 October, Yu Jie argues that Beijing must show more pragmatism about Taiwan and the West.

How important is foreign policy at the congress?  

The political reports delivered to the delegates of the week-long 20th Chinese Communist Party Congress, which happens every five years, follow a Marxist-Leninist formula. Economics and the means of production form the base, while politics and society fill in the superstructure. 

We can expect sections on the work of the Chinese Communist Party (CCP), ideological discussion, economics, domestic politics, foreign affairs, cultural reform and social developments. Usually, the report prioritizes big domestic political issues.  

The political report typically sheds some light on the status of, and relationships between, senior party members. It can also provide insights into the political fortunes of various interest groups. The report acts as a summary of the party’s achievements and its plans – expressed as the lowest common denominator of consensus between competing factions. 

The congress will address foreign affairs issues with long-lasting implications for the rest of the world

This year’s congress should be no different, and the political reshuffle that takes place is likely to signal how Beijing intends to rise to the many challenges at home and abroad. 

Given China’s growing power and its fraught relationship with the West, this year’s congress is expected to feature serious discussion on weighty foreign affairs issues affecting Beijing, and which will have long-lasting implications for the rest of the world.  

Which geopolitical issues will be priorities?  

When it comes to foreign affairs, China’s priorities rarely change. The CCP seeks to create a stable external environment to foster its domestic economic development. This conservative maxim was advocated in the 1980s by China’s then-paramount leader, Deng Xiaoping, and it will continue to guide Beijing’s relationships after this congress. 

While we don’t know the exact details of this year’s political report, we can expect discussion on relations with the US-led West, a possible shift in the relationship between Beijing and Moscow, and elaboration on China’s ties with the Global South.  

Notably, it’s likely that a separate chapter of the political report will see Taiwan treated alongside the special administrative regions of Hong Kong and Macau, signalling the party’s commitment to its claims over the contested island.  

Despite a chorus of nationalistic rhetoric surrounding the issue of Taiwan, Beijing will be careful not to stumble into an international conflict which risks causing colossal damage on all fronts. The choice of language on the so-called ‘Taiwan question’ in this political report will serve as a bellwether as to how, if at all, the party might fundamentally shift its views regarding Taiwan and deviate from the principle of ‘peaceful reunification’, the policy stated at every congress since 1979. 

How have China’s relations with the West worsened?  

President Richard Nixon’s visit to China in 1972, the first by an American president to the Communist nation, kicked off five decades of relative stability. However, as China’s global influence has grown, so have Washington’s fears.  

US-China relations, once stable and cooperative, are now volatile and competitive

The relationship has transitioned from the cooperation and relative stability that existed under President George W. Bush and President Hu Jintao in the early 2000s, into one characterized by volatility and competition under Xi Jinping, Joe Biden and Donald Trump. These tensions are almost certain to continue in Xi’s likely third term. 

Elements of China’s relationship with the West, such as cooperation over military and aviation technology, are becoming far more competitive. At the same time, trade and investment, once viewed as strong ties, have been rapidly deteriorating – as seen, for example, by several major publicly listed Chinese state-owned enterprises and large private companies withdrawing from the New York Stock Exchange.  

Will Beijing stand by the Kremlin despite Russia’s invasion of Ukraine?  

At the same time, Beijing’s close relationship with Moscow and its lack of opposition to Russia’s war in Ukraine have put China in an awkward position. The CCP has realized that cooperation with its long-standing ally and neighbour must come with substantial limits to avoid undermining its own political priorities and interests.  

Russia’s recklessness may spur Xi and the CCP’s senior leadership to minimize the economic, financial and political risks associated with the Kremlin’s pursuit of war against a country aligned with, and supported by, the West.  

Will China continue to support its regional partners?  

On its ties with the Global South, Beijing began to rethink its Belt and Road Initiative (BRI) as the US-led Indo-Pacific strategy gained geopolitical momentum. Regions of Southeast Asia and South Asia received a lot of funding and resources for BRI projects, as seen with Chinese support for the China-Pakistan Economic Corridor.  

Xi also recently introduced the Global Development and Global Security initiatives, which the political report should flesh out. 

Beijing is fully aware that it can only prosper if its regional partners prosper

Beijing is fully aware that it can only prosper if its regional partners prosper, and it can only achieve resource security and border stability if its southern and western neighbours in Myanmar and Afghanistan cease to fight over land and resources. 

Chinese foreign policy over the last five years has been a strange combination of high-octane rhetoric and patient pragmatism. To respond to this contradiction, the congress could be used as an opportunity to inject a dose of realism.  

Read the two further articles in this series: the first is a guide to why the Chinese Communist Party Congress matters; the second discusses the key domestic policy themes that Xi Jinping is expected to outline at this year’s congress.




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Analysis of {beta}-lactone formation by clinically observed carbapenemases informs on a novel antibiotic resistance mechanism [Enzymology]

An important mechanism of resistance to β-lactam antibiotics is via their β-lactamase–catalyzed hydrolysis. Recent work has shown that, in addition to the established hydrolysis products, the reaction of the class D nucleophilic serine β-lactamases (SBLs) with carbapenems also produces β-lactones. We report studies on the factors determining β-lactone formation by class D SBLs. We show that variations in hydrophobic residues at the active site of class D SBLs (i.e. Trp105, Val120, and Leu158, using OXA-48 numbering) impact on the relative levels of β-lactones and hydrolysis products formed. Some variants, i.e. the OXA-48 V120L and OXA-23 V128L variants, catalyze increased β-lactone formation compared with the WT enzymes. The results of kinetic and product studies reveal that variations of residues other than those directly involved in catalysis, including those arising from clinically observed mutations, can alter the reaction outcome of class D SBL catalysis. NMR studies show that some class D SBL variants catalyze formation of β-lactones from all clinically relevant carbapenems regardless of the presence or absence of a 1β-methyl substituent. Analysis of reported crystal structures for carbapenem-derived acyl-enzyme complexes reveals preferred conformations for hydrolysis and β-lactone formation. The observation of increased β-lactone formation by class D SBL variants, including the clinically observed carbapenemase OXA-48 V120L, supports the proposal that class D SBL-catalyzed rearrangement of β-lactams to β-lactones is important as a resistance mechanism.




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Structure, mechanism, and regulation of mitochondrial DNA transcription initiation [Enzymology]

Mitochondria are specialized compartments that produce requisite ATP to fuel cellular functions and serve as centers of metabolite processing, cellular signaling, and apoptosis. To accomplish these roles, mitochondria rely on the genetic information in their small genome (mitochondrial DNA) and the nucleus. A growing appreciation for mitochondria's role in a myriad of human diseases, including inherited genetic disorders, degenerative diseases, inflammation, and cancer, has fueled the study of biochemical mechanisms that control mitochondrial function. The mitochondrial transcriptional machinery is different from nuclear machinery. The in vitro re-constituted transcriptional complexes of Saccharomyces cerevisiae (yeast) and humans, aided with high-resolution structures and biochemical characterizations, have provided a deeper understanding of the mechanism and regulation of mitochondrial DNA transcription. In this review, we will discuss recent advances in the structure and mechanism of mitochondrial transcription initiation. We will follow up with recent discoveries and formative findings regarding the regulatory events that control mitochondrial DNA transcription, focusing on those involved in cross-talk between the mitochondria and nucleus.




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Fluorescence assay for simultaneous quantification of CFTR ion-channel function and plasma membrane proximity [Methods and Resources]

The cystic fibrosis transmembrane conductance regulator (CFTR) is a plasma membrane anion channel that plays a key role in controlling transepithelial fluid movement. Excessive activation results in intestinal fluid loss during secretory diarrheas, whereas CFTR mutations underlie cystic fibrosis (CF). Anion permeability depends both on how well CFTR channels work (permeation/gating) and on how many are present at the membrane. Recently, treatments with two drug classes targeting CFTR—one boosting ion-channel function (potentiators) and the other increasing plasma membrane density (correctors)—have provided significant health benefits to CF patients. Here, we present an image-based fluorescence assay that can rapidly and simultaneously estimate both CFTR ion-channel function and the protein's proximity to the membrane. We monitor F508del-CFTR, the most common CF-causing variant, and confirm rescue by low temperature, CFTR-targeting drugs and second-site revertant mutation R1070W. In addition, we characterize a panel of 62 CF-causing mutations. Our measurements correlate well with published data (electrophysiology and biochemistry), further confirming validity of the assay. Finally, we profile effects of acute treatment with approved potentiator drug VX-770 on the rare-mutation panel. Mapping the potentiation profile on CFTR structures raises mechanistic hypotheses on drug action, suggesting that VX-770 might allow an open-channel conformation with an alternative arrangement of domain interfaces. The assay is a valuable tool for investigation of CFTR molecular mechanisms, allowing accurate inferences on gating/permeation. In addition, by providing a two-dimensional characterization of the CFTR protein, it could better inform development of single-drug and precision therapies addressing the root cause of CF disease.




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Network Power in the Asia-Pacific: Making Sense of the New Regionalism and Opportunities for Cooperation

Network Power in the Asia-Pacific: Making Sense of the New Regionalism and Opportunities for Cooperation 7 February 2020 — 9:45AM TO 5:30PM Anonymous (not verified) 17 January 2020 Chatham House | 10 St James's Square | London | SW1Y 4LE

The Asia-Pacific region continues to increase in geopolitical and geoeconomic importance. The rise of China and tensions with the US are affecting bilateral relationships and traditional alliances in the region. Whether seen from the perspective of the Quad – Australia, India, Japan and the US – or the Indo-Pacific concept embraced by a wide range of countries but with no shared consensus on scope and objectives or with ASEAN who insists on the importance of its own centrality, the region is redefining and reconceptualising itself.

With a diverse range of initiatives – including the Regional Comprehensive Economic Partnership (RCEP) and Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) – there are a plethora of regional agreements and institutional groupings that add further complexity.

As the Bretton Woods architecture continues to be dominated by Western powers, China is also spearheading parallel governance initiatives such as the Asian Infrastructure Investment Bank (AIIB), the Belt and Road Initiative and the Shanghai Cooperation Organization (SCO) as a means of enhancing its geopolitical and geoeconomic influence.

This one-day conference will focus on how such networks and alliances have been built, and sustained, in the Asia-Pacific region. In order to understand how new regional initiatives might open up opportunities for new forms of international cooperation, the conference will focus on the themes of cyber-technology and innovation, sustainable development and mitigating the impacts of climate change and new infrastructure initiatives. It will assess whether there is a zero-sum conflict between competing networks and agendas or whether a common approach can be developed.




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In Vivo Identification of Human Small Ubiquitin-like Modifier Polymerization Sites by High Accuracy Mass Spectrometry and an in Vitro to in Vivo Strategy

Ivan Matic
Jan 1, 2008; 7:132-144
Research




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Quantitative, Multiplexed Assays for Low Abundance Proteins in Plasma by Targeted Mass Spectrometry and Stable Isotope Dilution

Hasmik Keshishian
Dec 1, 2007; 6:2212-2229
Research




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Quantitative Mass Spectrometric Multiple Reaction Monitoring Assays for Major Plasma Proteins

Leigh Anderson
Apr 1, 2006; 5:573-588
Research




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The Human Plasma Proteome: History, Character, and Diagnostic Prospects

N. Leigh Anderson
Nov 1, 2002; 1:845-867
Reviews/Perspectives




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The election shows that Trumpism is here to stay

The election shows that Trumpism is here to stay Expert comment rgold.drupal

World leaders must engage with the new president’s view of America’s priorities and accept that the US has changed.

In a landslide victory, former President Donald Trump has been elected to be the 47th president of the United States. This election was laden with the expectation that a dead heat would lead to delay, legal challenge, extremism, and possible violence. It has instead passed quickly, decisively, and peacefully.  More than 67 million Americans who voted for Kamala Harris have demonstrated restraint and accepted the result. By this measure, democracy in the United States has prevailed. 

Across Asia and Latin America, leaders have been preparing for a second Trump term. They are pragmatic and resolute in their belief that they can work with the once and 

also future US president. In Europe, leaders have been less certain. They have oscillated between two approaches. The first, of ‘Trump-proofing’ – an instinct if not a strategy  that builds on the quest for strategic autonomy, championed by the President of France, Emmanuel Macron. The second, a calculation by some, not least the Prime Minister of Hungary, Viktor Orbán, that they can present themselves as top-tier partners to the US in a new approach to transatlantic security. 

Trumpism is not an aberration

For eight years, world leaders and foreign policy experts have been debating whether President Trump was the cause of a radical change in the US, or merely a symptom of powerful trends in the American body politic: rising inequality, a loss of manufacturing jobs –a demographic defined by white male non-college-educated voters who feel left behind a deeply engrained anti-elitism, and a society in desperate need of a new kind of political leadership. 

In Trump’s first term, many leaders acted on the basis that he was an aberration, not a symptom. That meant that foreign leaders assumed his policies might disappear with his future electoral defeat, and short-term strategies designed to ‘work around’ Trump were a good bet. 

In Trump’s first term… foreign leaders assumed his policies might disappear with his future electoral defeat and short-term strategies designed to ‘work around’ Trump were a good bet. 

The next US president would return to a familiar agenda (free trade, market access, strong alliances, a commitment to climate action, extended nuclear deterrence and deepening transatlantic ties) and so America’s friends could wait this out. Indeed, civil servants frequently pointed to the strength of bilateral working relations, despite an often disruptive high-level political style. 

President Joe Biden’s commitment to multilateralism, the transatlantic partnership and Ukraine seemed to confirm the view that Trump’s policies were an anomaly and that America had reverted to normal. Gradually, though, Biden’s policies began to chip away at this assumption. He continued Trump’s tariffs, executed a reckless and unilateral exit from Afghanistan with little consultation, and pushed through a transformative but also protectionist climate investment bill in the Inflation Reduction Act. 

Fast forward to this election result. A stunning – many would say shocking – victory must put to rest any assumption that Trump is an aberration. It may have started that way, but today it appears there is no going back. The world is now confronted with a president that has had time to sharpen and hone his instincts, to prioritise loyalty in appointing a close circle of advisers, and to lay the foundation for his Vice President JD Vance to carry forward his vision once his second term ends. 

First moves

What will Trump do first? Several things are in store: A sharp immigration policy including deportations is likely to be top of Team Trump’s agenda in its first 100 days. This may prove to be inflationary – deporting millions of undocumented migrants would shrink the labour supply – but that is unlikely to restrain Trump in the short-term. A 2.0 version of his so-calledMuslim ban could also feature. And immigrants will continue to take a hit rhetorically, labelled as outsiders and as criminals. 

The punishment for noncompliance could also be harsh. If Mexico does not demonstrate its willingness to cooperate, retaliation might take the form of tariffs, or a tough review or even renegotiation of the United States-Mexico-Canada Agreement (USMCA) in 2026. 

The return to tariffs as the front line of trade policy  is virtually certain. Trump has telegraphed this for months. China can expect far harsher tariffs. What is more difficult to discern is whether these will be a bargaining tool with conditions attached, or a ratcheting up towards a new level of protectionism. 

For Asia, there is grave uncertainty. No one can be sure what Trump’s strategy will be towards Taiwan. Investment in the latticework of mutually-reinforcing partnerships across the region may take a back seat. But how Trump will manage North Korea’s nuclear threat is unclear. So too is the question of whether under his watch, US nuclear deterrence will continue to provide enough assurance to prevent South Korea and Japan from developing their own nuclear weapons. 

It will be the existential and enduring shift in America’s commitment to Europe and its security that will hit hardest.

Still, it is Europe that is likely to face the sharpest edge of Trump’s second term. Tariffs in search of reciprocal market access and reducing America’s trade deficit with Europe are more likely than not. But it will be the existential and enduring shift in America’s commitment to Europe and its security that will hit hardest. 




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Building Resistance to Violent Extremism




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Reconstruction in Syria: Between Political Pragmatism and Human Rights Idealism




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Global Trade Landscape Series: US Trade in an Age of Protectionism




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Securing Peace in the 21st Century: The Roles of Diplomacy and Statesmanship




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Chatham House Primer: National Populism




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Can Multilateralism Survive?




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Undercurrents: Episode 22 - China's Belt and Road Initiative, and the Rise of National Populism




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Online Counterterrorism: The Role of the Public and Private Sectors




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Undercurrents: Episode 27 - Financing for Developing Countries, and Investigative Journalism in West Africa




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Direct Democracy: Participation Without Populism?




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The 2019 Arab Youth Survey: Pragmatism, Frustration and Optimism




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Jihad and Terrorism in Pakistan: The Case of Lashkar-e-Taiba




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Peacemaking in an Era of Global Extremism




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Chatham House Primer: Democratic Socialism




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Secularism, Nationalism and India's Constitution




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Multivalent feedback regulation of HMG CoA reductase, a control mechanism coordinating isoprenoid synthesis and cell growth

MS Brown
Jul 1, 1980; 21:505-517
Reviews




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Fish oils and plasma lipid and lipoprotein metabolism in humans: a critical review

WS Harris
Jun 1, 1989; 30:785-807
Reviews




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Disruption of endoplasmic reticulum structure and integrity in lipotoxic cell death

Nica M. Borradaile
Dec 1, 2006; 47:2726-2737
Research Articles




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Lipidomics reveals a remarkable diversity of lipids in human plasma

Oswald Quehenberger
Nov 1, 2010; 51:3299-3305
Research Articles




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The role of short-chain fatty acids in the interplay between diet, gut microbiota, and host energy metabolism

Gijs den Besten
Sep 1, 2013; 54:2325-2340
Reviews




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Thematic review series: Brain Lipids. Cholesterol metabolism in the central nervous system during early development and in the mature animal

John M. Dietschy
Aug 1, 2004; 45:1375-1397
Thematic Reviews




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High density lipoprotein metabolism

S Eisenberg
Oct 1, 1984; 25:1017-1058
Reviews




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Identification of multiple subclasses of plasma low density lipoproteins in normal humans

Ronald M. Krauss
Jan 1, 1982; 23:97-104
Articles




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Thematic review series: The Pathogenesis of Atherosclerosis. Effects of infection and inflammation on lipid and lipoprotein metabolism mechanisms and consequences to the host

Weerapan Khovidhunkit
Jul 1, 2004; 45:1169-1196
Thematic Reviews




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Plasma cholesteryl ester transfer protein

AR Tall
Aug 1, 1993; 34:1255-1274
Reviews




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Remnant lipoprotein metabolism: key pathways involving cell-surface heparan sulfate proteoglycans and apolipoprotein E

Robert W. Mahley
Jan 1, 1999; 40:1-16
Reviews




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Lipoprotein lipase and lipolysis: central roles in lipoprotein metabolism and atherogenesis

IJ Goldberg
Apr 1, 1996; 37:693-707
Reviews




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The plasma lecithin:cholesterol acyltransferase reaction

John A. Glomset
Mar 1, 1968; 9:155-167
Reviews




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Digital governance must not marginalize smaller states

Digital governance must not marginalize smaller states Expert comment LToremark 19 May 2021

For effective and inclusive digital governance, multi-stakeholderism must raise its game.

Last month, the G7 announced it is to work towards a trusted, values-driven digital ecosystem. While this is commendable, the G7 must recognize that key international digital governance decisions should involve all states whose populations will be affected. Not doing so is to deny the legitimate interests of those populations and may cause a lack of trust in international digital governance that embeds longer-term instability.

While a multi-stakeholder approach to digital governance is important, it must be structured in a way that allows for meaningful representation of states’ interests and ensures their representatives have the opportunity and capacity to take part. As the internet becomes fundamental to life in every country of the world, international digital governance is increasingly important to all governments and excluding some states’ perspectives may engender wider risks to international security and governance.

The ‘glitter ball’ of digital governance

International digital governance is playing catch-up with the digital sphere it needs to govern.

International digital governance is playing catch-up with the digital sphere it needs to govern. Its starting point is a ‘glitter ball’ of governance initiatives: a large number of complex facets with overlapping impacts – and an almost impenetrable core. Governance initiatives (see infographic) include governance of the internet itself and its uses, international cybersecurity, international human rights, data management, as well as the impact of digital developments in areas such as armed conflict, trade and health.

Many of the bodies involved – such as the Internet Governance Forum, the Internet Corporation for Assigned Names and Numbers (ICANN) and technical standards bodies – include a wide range of stakeholders, yet there is no one accessible, central body. Furthermore, certain key issues, such as the role and responsibilities of tech platforms, are barely touched upon by international governance mechanisms. There is also currently only a limited role for traditional UN multilateral decision-making, a process which builds in a role for smaller states.

The sheer number of forums involved, each with a different set of working methods and rules on participation, makes it difficult to fully grasp what digital governance looks like as a whole. The UN secretary-general’s High-level Panel on Digital Cooperation recognized the complexity of digital cooperation arrangements and the barriers to inclusion facing small and developing countries as well as under-represented groups. In response, the June 2020 UN Roadmap on Digital Cooperation accepts the need to streamline digital governance while ensuring marginalized voices are heard.

The sheer number of forums involved, each with a different set of working methods and rules on participation, makes it difficult to fully grasp what digital governance looks like as a whole.

The UN is considering potential models for future governance, each of which would – reassuringly – involve multi-stakeholder participation, dedicated funds to boost participation, consolidation of discussions currently split between different forums and a minor coordinating role for the UN.  

Building in roles for smaller states

As the UN designs new digital governance architecture, it is particularly important to build in roles for small and medium states. Core constituencies affected by decisions should be at the centre and governments – as guardians of public interest – should have a key say in the decision-making process. The distrust generated by built-in power imbalances needs to be addressed, as does the dominance of voices from the Global North in bodies such as ICANN.   

There has been some progress made to increase participation. For example, the Freedom Online Coalition includes a number of developing countries and the 2020 Internet Governance Forum included input from 175 states.

Multi-stakeholderism needs to raise its game.

However, participation is not only a matter of having a seat at the table. As discussed at the March 2021 UN Open-ended Working Group on ICTs in the context of international security, capacity-building is vital. The group’s conclusions include the suggested development of a global cyber capacity-building agenda with information sharing and norms guidance under the auspices of the UN. Representatives of small and medium states need a roadmap to understand in which forums they can defend and pursue their interests, and the financial help to do so if necessary.

Managing multi-stakeholder participation

A multi-stakeholder approach has been fundamental to digital governance from the start and has played a vital role in helping to secure the openness and universality of the internet. This approach is rightly seen as essential to effective governance because it introduces diverse expertise, allows the interests of all impacted sectors to be taken into account and helps ensure decisions are accepted by those affected.

There is a perennial risk of debate and decision-making being captured by the wealthiest companies or the most powerful states.

However, as identified in a Chatham House report on inclusive global governance, multi-stakeholderism needs to raise its game. One of its downsides is that in the cacophony some important voices may not be heard because they lack resource or capacity to speak up. There is a perennial risk of debate and decision-making being captured by the wealthiest companies or the most powerful states. At present, small and medium states are under-represented in multi-stakeholder forums and it is important that those managing such forums seek to identify and include previously excluded voices.

Multi-stakeholderism should not come at the expense of efficiency. While it does not have to mean huge, inefficient meetings or endless discussion, it should also not mean that smaller, less well-funded voices are not heard. Instead, such processes should enable representation of appropriate interest groups, complemented by wider meetings (such as regional meetings, or sector-specific meetings) as needed. While inclusivity and transparency are key, synergies between regional and global forums can work well –  for example, some countries have adopted national versions of the Internet Governance Forum –  and so too can hybrid models such as the Freedom Online Coalition, which meets both as government members and for regular multi-stakeholder dialogue.

A multi-stakeholder approach should also not lose sight of the key role of states – and where mandated, sub-state entities – in making public policy decisions.

An important role for the UN

For 75 years, the UN has acted as a bulwark of international security and shared values, and a promoter of economic and social development. If misused, technology has the potential to undermine this bulwark, to facilitate conflict, erode rights and undermine development. The UN must encourage the harnessing of technology for society’s benefit, while leading a collective effort to guard against the risks through the retention and growth of a universal, open internet – particularly in the face of growing digital authoritarianism exacerbated by COVID-19.

The UN can also help protect against a commercial culture that threatens to trample fundamental freedoms of privacy and autonomy in its pursuit of wealth and to widen economic and social gulfs by leaving large swathes of the world behind. If the UN is to play this role effectively – and for the benefit of all its members ­– it requires the active participation of all states, large and small.




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Counter-terrorism measures and sanctions: How to avoid negative consequences for humanitarian action?

Counter-terrorism measures and sanctions: How to avoid negative consequences for humanitarian action? 9 September 2021 — 2:00PM TO 3:30PM Anonymous (not verified) 21 July 2021 Online

Exploring current endeavours to address the tensions between counter-terrorism measures, sanctions and humanitarian action.

Counter-terrorism measures  address broad forms of support to terrorist acts. Their expansion, internationally and domestically, has given rise to new points of friction with international humanitarian law. Unless the measures include adequate safeguards, they  can impede humanitarian action. Country-specific sanctions imposed for other objectives, such as ending conflicts or protecting civilians, raise similar challenges for humanitarian action. 

These problems are not new, but solutions at international and national level remain elusive. 

At this panel event, which marks the launch of a new Chatham House research paper, panellists explore current endeavours to address the tensions between counter-terrorism measures, sanctions and humanitarian action.

  • What are the current dynamics and developments at Security Council level?  
  • What are the opportunities now that the UK is developing its independent sanctions strategy? 
  • What challenges do counter-terrorism requirements in funding agreements for humanitarian action  pose? 
  • What is necessary to make progress?




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Liberalism’s betrayal of itself—and the way back

Source

The Economist

Release date

14 February 2019

Expert

Hans Kundnani

In the news type

Op-ed

Hide date on homepage





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Biochemical and biophysical analyses of hypoxia sensing prolyl hydroxylases from Dictyostelium discoideum and Toxoplasma gondii [Molecular Biophysics]

In animals, the response to chronic hypoxia is mediated by prolyl hydroxylases (PHDs) that regulate the levels of hypoxia-inducible transcription factor α (HIFα). PHD homologues exist in other types of eukaryotes and prokaryotes where they act on non HIF substrates. To gain insight into the factors underlying different PHD substrates and properties, we carried out biochemical and biophysical studies on PHD homologues from the cellular slime mold, Dictyostelium discoideum, and the protozoan parasite, Toxoplasma gondii, both lacking HIF. The respective prolyl-hydroxylases (DdPhyA and TgPhyA) catalyze prolyl-hydroxylation of S-phase kinase-associated protein 1 (Skp1), a reaction enabling adaptation to different dioxygen availability. Assays with full-length Skp1 substrates reveal substantial differences in the kinetic properties of DdPhyA and TgPhyA, both with respect to each other and compared with human PHD2; consistent with cellular studies, TgPhyA is more active at low dioxygen concentrations than DdPhyA. TgSkp1 is a DdPhyA substrate and DdSkp1 is a TgPhyA substrate. No cross-reactivity was detected between DdPhyA/TgPhyA substrates and human PHD2. The human Skp1 E147P variant is a DdPhyA and TgPhyA substrate, suggesting some retention of ancestral interactions. Crystallographic analysis of DdPhyA enables comparisons with homologues from humans, Trichoplax adhaerens, and prokaryotes, informing on differences in mobile elements involved in substrate binding and catalysis. In DdPhyA, two mobile loops that enclose substrates in the PHDs are conserved, but the C-terminal helix of the PHDs is strikingly absent. The combined results support the proposal that PHD homologues have evolved kinetic and structural features suited to their specific sensing roles.




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FRET and optical trapping reveal mechanisms of actin activation of the power stroke and phosphate release in myosin V [Enzymology]

Myosins generate force and motion by precisely coordinating their mechanical and chemical cycles, but the nature and timing of this coordination remains controversial. We utilized a FRET approach to examine the kinetics of structural changes in the force-generating lever arm in myosin V. We directly compared the FRET results with single-molecule mechanical events examined by optical trapping. We introduced a mutation (S217A) in the conserved switch I region of the active site to examine how myosin couples structural changes in the actin- and nucleotide-binding regions with force generation. Specifically, S217A enhanced the maximum rate of lever arm priming (recovery stroke) while slowing ATP hydrolysis, demonstrating that it uncouples these two steps. We determined that the mutation dramatically slows both actin-induced rotation of the lever arm (power stroke) and phosphate release (≥10-fold), whereas our simulations suggest that the maximum rate of both steps is unchanged by the mutation. Time-resolved FRET revealed that the structure of the pre– and post–power stroke conformations and mole fractions of these conformations were not altered by the mutation. Optical trapping results demonstrated that S217A does not dramatically alter unitary displacements or slow the working stroke rate constant, consistent with the mutation disrupting an actin-induced conformational change prior to the power stroke. We propose that communication between the actin- and nucleotide-binding regions of myosin assures a proper actin-binding interface and active site have formed before producing a power stroke. Variability in this coupling is likely crucial for mediating motor-based functions such as muscle contraction and intracellular transport.




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Mining, Minerals and Metals Expert Roundtable: Forest-Smart Mining Report Launch

Mining, Minerals and Metals Expert Roundtable: Forest-Smart Mining Report Launch 10 May 2019 — 5:30PM TO 6:30PM Anonymous (not verified) 12 April 2019 Chatham House | 10 St James's Square | London | SW1Y 4LE

The impact of mining on forests has received relatively limited attention at the global level despite its implications for climate change, biodiversity and the wider Sustainable Development Goals. Three new studies – commissioned by the World Bank and the Program on Forests (PROFOR) and delivered by a consortium including Fauna and Flora International, Levin Sources, Fairfields Sustainability Consulting and Swedish Geological AB – shed new light on the impact of mining on deforestation, current practices to protect forests in mining areas and how ‘forest-smart’ mining policies, practices and partnerships can be scaled-up and accelerated.
The report authors will introduce the key findings of the reports, as they relate to large-scale mining (LSM), artisanal and small-scale mining (ASM) and the implementation of biodiversity offset schemes, with a focus on landscape-level efforts that avoid or minimize adverse impacts on forests – and ideally result in a net gain for forest outcomes. The speakers will then set out policy and practical recommendations designed to support ‘forest-smart’ mining, conserve biodiversity and ensure a ‘well below 2c’ future, before opening up the discussion to participants.




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Populism Comes to South Korea

Populism Comes to South Korea Expert comment sysadmin 20 December 2016

Public disgust with the embattled president reflects not only the unedifying details of her impeachment but a wider distrust of the political system.

South Korean protesters hold torches during a rally against the president in central Seoul. Photo by Getty Images.

For South Korea’s President Park Geun-hye, the jury is quite literally still out. Impeached by the country’s National Assembly on 9 December over claims of corruption, cronyism and influence peddling, she defiantly rejected – in a detailed statement – all of the charges levelled at her by an independent prosecutor. Any resolution of the issue must now await the ruling of the country’s Constitutional Court on the legitimacy of the impeachment vote – a decision that most likely will come early in the new year.

For the special prosecutor’s office, which is due to start its formal investigation on 21 December, the challenge is to find unambiguous evidence of the president’s direct responsibility for any of the corruption that may have taken place. The president, for her part, can claim, with some credibility that so far she has been tried only in the court of public opinion; that in South Korea’s rumour-prone, scandal-hungry media environment in which prosecutors have been known in the past to leak information to skew public debate, she has been denied natural justice and the presumption of innocence until proven guilty.

Long shadows

But for the more than three-quarters of the Korean public calling for Park’s resignation, the president is symptomatic of Korean society’s wider flaws, including a pattern of corruption, privilege and hypocrisy endemic to the country’s political, economic and social elites. At a time of anemic economic growth (the country’s growth rate is predicted to slow to 2.1% next year), widening wealth and income disparities and reduced employment opportunities for a highly educated workforce, there is a growing mood of populist disaffection with the entire social and political system – for its lack of fairness and transparency and its perceived regulatory inefficiencies. This has been highlighted dramatically by disasters such as the Sewol ferry sinking that claimed the lives of some 300 school-children in August 2014 – at which time the president was castigated for being absent from her office at the time of a grave national crisis.

Complicating the current stand-off is the long-shadow of identity politics and unresolved disagreements about the country’s postwar historical narrative. As the daughter of the man responsible for the Korean economic ‘miracle’ who protected the country from the external communist threat in the North and radical subversion from within, Park’s political lineage is, for the older generation of voters in their sixties and above, a powerful reason to back the beleaguered president.

Already there are signs that this constituency is beginning to rally behind Park, with 30,000 demonstrating on 17 December against the impeachment decision, and with the governing Saenuri party showing signs of a consolidation of power around pro-Park legislators. The president, who has a reputation for stubbornness, may be calculating that this core support may allow her to defy the much larger calls for her resignation. She may also be hoping that the constitutional court, in which the majority of justices are politically conservative, will rule in her favour, allowing her to see out the remainder of her time in office, set to end in February 2018.

A pro-Park ruling by the court seems unlikely given the weight of the circumstantial evidence. Leading opposition politicians, including Moon Jae-in, former head of the Democratic Party and the current front runner in any post-impeachment presidential contest, has warned of a popular ‘revolution’ if the impeachment vote is not upheld. Moreover, the appetite for street protests against the president remains undimmed, and even conservative politicians appear to be positioning themselves for a post-Park era. Ban Ki-moon, the outgoing UN secretary general and long considered a likely Saenuri party candidate for the presidency, has been publicly distancing himself from Park. With 20.5% support, behind Moon on 23.7%, he has compelling reasons to align himself with the popular mood.

Lessons

At an individual level, the experience of President Park combines both political failure and personal tragedy. She has demonstrably failed to live up to her early commitments to represent all Koreans and to bridge the deep divisions between left and right in Korean society. She has also remained deeply isolated from the professional politicians and democratic polity she purports to lead. This is perhaps not so surprising given her authoritarian heritage and the experience of seeing both her parents assassinated in space of five years in the 1970s. The trauma of this experience reportedly made her distrustful of government officials and overly inclined to rely on the guidance of personal friends of dubious reliability, the font of her current troubles. There is also a profound irony that a politician who came to power vowing to place ‘trust-politik’ at the heart of her policy towards North Korea has seen her political position undermined, perhaps fatally, by a near complete collapse in public confidence in her administration.

More widely, the Park saga reveals an important and potentially seismic shift in public attitudes in South Korea, perhaps spurred by a growing populist trend evident elsewhere, whether in the US, Europe or parts of Southeast Asia. Koreans appear to have lost patience with their political system. This new climate of dissent – emboldened by the signs that protest can potentially lead to radical political change – is likely to prove a challenge to any future Korean leader hoping to secure the trust and legitimacy needed to govern.

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