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Field experiments and simulation models are useful tools for understanding crop yield gaps, but scaling up these approaches to understand entire regions over time has remained a considerable challenge. Satellite data have repeatedly been shown to provide information that, by themselves or in combination with other data and models, can accurately measure crop yields in farmers’ fields. The resulting yield maps provide a unique opportunity to overcome both spatial and temporal scaling challenges and thus improve understanding of crop yield gaps. This review discusses the use of remote sensing to measure the magnitude and causes of yield gaps. Examples from previous work demonstrate the utility of remote sensing, but many areas of possible application remain unexplored. Two simple yet useful approaches are presented that measure the persistence of yield differences between fields, which in combination with maps of average yields can be used to direct further study of specific factors. Whereas the use of remote sensing may have historically been restricted by the cost and availability of fine resolution data, this impediment is rapidly receding.

Highlights:

  • Satellite data can help overcome spatial and temporal scaling issues that challenge simulation and experiment based analyses of yield gaps.
  • Yield gap profiles, based on multiple years of satellite data, provide a useful measure of how persistent yield-controlling factors are through time.
  • Satellite data capable of discriminating crop yields on individual fields are more available and affordable than ever.

The article is part of a special issue on crop yield gap analysis.

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Field Crops Research
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David Lobell
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Abstract:

It has been said that constitutional court judges around the world increasingly participate in a "global judicial dialogue" that causes judges to make increased use of foreign law.  This is a dialogue, however, from which the members of the Taiwanese Constitutional Court are largely excluded.  Taiwan’s precarious diplomatic situation and intense lobbying by China have effectively prevented the members of Taiwan's Constitutional Court from participating in international judicial gatherings and official visits to foreign courts. Nevertheless, the Taiwanese Constitutional Court routinely engages in extensive consideration of foreign law, either expressly or implicitly, when deciding cases.  This fact casts doubt on the notion that "global judicial dialogue" explains judicial use of foreign law.  Comparison of the Taiwanese Constitutional Court and U.S. Supreme Court demonstrates that “global judicial dialogue” plays a much smaller role in shaping a court’s utilization of foreign law than institutional factors such as (a) the rules and practices governing the composition and staffing of the court and (b) the extent to which the structure of legal education and the legal profession incentivizes judges and academics to possess expertise in foreign law.

 

Speaker Bio:

David Law is Professor of Law and Professor of Political Science at Washington University in St. Louis and Visiting Professor at Georgetown University Law Center. He works in the areas of law and political science, public law, judicial behavior, comparative constitutional law, and comparative judicial politics. Born and raised in Canada, he holds a Ph.D. in political science from Stanford, a B.C.L. in European and Comparative Law from the University of Oxford, and a J.D. from Harvard Law School. He has previously taught at the University of San Diego School of Law and the University of California, San Diego political science department and has been a visiting professor at the National Taiwan University College of Law, Seoul National University School of Law, and Keio University Faculty of Law in Tokyo, and a visiting scholar at the NYU School of Law. His current research focuses on the identification, explanation, and prediction of global patterns in constitutional law, and his recent scholarship on constitutional globalization and the declining influence of the U.S. Constitution has been featured in a variety of domestic and international media.

 

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David Law Professor of Law and Political Science Speaker Washington University in St. Louis
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He broke the news to the world that North Korea had built a modern uranium enrichment plant. He’s helped the Russians secure their vast stockpile of ex-Soviet fissile materials. And Stanford students routinely rank him as one of their favorite professors. 

Siegfried Hecker, one of he world’s top nuclear scientists and co-teacher of the popular course, “Technology and National Security,” has completed his five-year tenure as co-director of the Center for International Security and Cooperation (CISAC).

Though Hecker is stepping down from the leadership role, he’s not walking away.

“He’s not going anywhere,” emphasized his successor, Stanford microbiologist and biosecurity specialist, David Relman, as he opened a seminar in Hecker’s honor on Feb. 25. The panel discussion, “Three Hard Cases: Iran, North Korea and Pakistan” featured Scott Sagan, Malfrid Braut-Hegghammer, Abbas Milani, Robert Carlin and Feroz Khan.

“He’ll be back this summer with his infectious energy and unswerving dedication for which he is so well known,” Relman said.

Hecker, 69, is taking a sabbatical in New Mexico – where he was director of the Los Alamos National Laboratory for more than a decade before coming to Stanford – and then at the Vienna Center for Disarmament and Non-Proliferation, run by the Monterey Institute of International Studies. He’ll continue work on his book about his historic efforts to foster collaboration between U.S.-Russian nuclear labs and do some travel to meet his nonproliferation counterparts in other parts of the world.

“CISAC is part of my heart and soul now,” Hecker told a reception in his honor after the seminar. “Los Alamos was in my blood and bones. Today, Stanford is part of that too.”

Hecker will return to CISAC this summer to resume his writing and research projects as a senior fellow at CISAC and its umbrella, the Freeman Spogli Institute for International Studies (FSI). He’ll head back to the classroom as well.

“What I found out is that teaching is so much harder than just giving a lecture, because you really have to pay attention to what the students have actually absorbed,” Hecker said. “You need to be able to communicate with each and every one of them.”

Among the many national honors that Hecker has received over the years, the one he treasures most is the 2010 Eugene L. Grant Award for Excellence in Undergraduate Teaching, an honor voted on by the students.

Lauren Cipriano, a Ph.D. candidate in Mechanical Science and Engineering, has been Hecker’s teaching assistant for four years. She noted his class co-taught with former Secretary of Defense William J. Perry – also a senior FSI fellow and CISAC faculty member – is routinely attended by hundreds of students and rated among the best.

“He shares his own stories of how developing personal relationships with Russian nuclear scientists in the wake of the Cold War helped overcome diplomatic challenges, and how he continues those efforts today in Russia and North Korea to make the world a safer place,” she said in her reception toast. “Sig also has a scary ability to predict the future. Several times our policy paper assignments have nearly come true.”

One of those dramatic examples unfolded in 2010. While the students were writing a paper about how they would respond to the discovery that North Korea had established a uranium enrichment facility, Sig was traveling to Pyongyang.

“Our students were some of the first to hear the stunning news of the uranium enrichment facilities the North Koreans revealed to him on his trip,” she said. “The students couldn’t have been more excited to feel like insiders in the national security policy arena.”

Hecker said he is particularly proud of the bright young scientists who have come through as CISAC fellows during his tenure.

“I think we’ve been able to build a really strong science component to support CISAC’s mission of building a safer world,” Hecker said. “We’ve been able to attract a lot of very good young scientists and then send them on to good careers from here.”

He said that working with these pre- and postdoctoral fellows and visiting faculty and scholars from the life sciences and political sciences “has helped me to better understand how important it is to bring the technical and social sciences together when looking at problems of international security.”

Hecker, who moved to the United States with his family from Austria when he was a boy, received his Ph.D. in metallurgy from Case Western Reserve University and began his professional career as a senior research metallurgist with the General Motors Research Laboratories in 1970. He joined the Los Alamos National Laboratory in 1973, became its director in 1986 and served for more than a decade.

Hecker came to CISAC in 2005 as a visiting professor, having been recruited by Sagan, who was then the social science co-director of CISAC.

“Sig first became involved with CISAC when he was still at Los Alamos, through participating in our Track II nuclear diplomacy efforts with John Lewis in North Korea and with me in a Five Nations project meeting in Thailand,” recalled Sagan. The Five Nations Project on Asian Regional Security and Economic Development focused on new challenges to nuclear nonproliferation by the U.S., China, Russia, India and Pakistan.

“I first broached the possibility of his coming to Stanford as a visiting professor when he and I were in the back seat of a taxi in Bangkok after giving a joint lecture at the Royal Thai Military Academy,” in July 2004, Sagan said. “He has been a stellar leader and now that he is stepping down from administrative responsibilities, he will have even more time to be involved in CISAC’s nuclear nonproliferation activities around the globe."

CISAC co-director, Tino Cuéllar, called himself a “charter member of the national federation of the Sig Hecker fan club.”

“In his eventful, five-year tenure, Sig has been an extraordinary leader,” Cuéllar said. “He’s been a visionary about its future, an endlessly enthusiastic supporter of its varied missions and a role model of excellence combined with the collegiality that CISAC prizes so dearly.

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There are three major components of Cyber security from China’s perspective: Internet information management, Civilian cyber security, and Cyber warfare.

The Chinese government worries that misinformation, dissent opinions and dissemination of rumors could cause social instability, and thus overthrow the regime. As a result, the government has taken many approaches to manage the information in cyberspace. Can the Chinese government fully control the information flow? If not, why?

China has 500 million netizens, more than any other country in the world. How do the government and companies deal with privacy and cyber crime?

Cyber attack from China is widely reported in US media. How do Chinese view US cyber warfare capability? Can "Pearl Harbor" happen in cyberspace?

A better understanding of these questions could be helpful for shaping US cyber policies on China.


Ting Wang is a postdoctoral fellow at CISAC. His research concerns on space debris problems, ASAT weapons, and cybersecurity in China. Before coming to CISAC in 2011, he was a postdoctoral fellow at the Judith Reppy Institute for Peace and Conflict Studies at Cornell University. He received a PhD at the Beihang University in China. His PhD dissertation was titled "Orbital Debris Evolution and Threat to Spacecraft." He also holds a B.A. in aerospace engineering from Beihang University and has worked at the Shanghai Institute of Satellite Engineering. He was a visiting scholar at the Union of Concerned Scientists in 2003, where he began to be interested in security issues.

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Ting Wang Post-doctoral fellow Speaker CISAC
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When Galileo’s telescope arrived in Madrid in 1610, it not only changed the course of local science, but also became a pivotal image in the critique of contemporary society once it was incorporated into the lexicon of satires, emblems, sonnets, and allegorical dreams as anteojo de larga vista.  The passages analyzed in this talk help us see its rich presence in Spain, forcing us to rethink the artificial gap between scientific discourse and literary creation.

This seminar is part of The Europe Center's Iberian Studies Program seminar series.

Pigott Hall, Bldg 260
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Enrique García Santo Tomás Professor of Spanish at the University of Michigan and Senior Fellow Speaker Michigan Society of Fellows
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Nearly $370,000 has been awarded to Stanford researchers trying to improve conditions in some of the world’s poorest places.

The money comes from the Global Underdevelopment Action Fund, which was established four years ago by the Freeman Spogli Institute for International Studies to provide seed grants to faculty designing interdisciplinary research experiments.

“It’s money that we can deploy quickly and that we can use in a very flexible way,” says Stephen D. Krasner, deputy director of FSI and chair of the Action Fund awards committee. “We can target specific kinds of activity that we’re interested in — not just because we think the activities themselves are worthwhile, but because we think they can really contribute to the interdisciplinary community that we’re building at FSI.”

The 12 Action Fund grants range from projects with immediate social impact to those designed to build an academic foundation for future work. The seed grants provided by the fund often are the first steps toward a sustainable research project funded by other sources, as well. Krasner says the grants are also awarded in part to impact policy and help solve problems that benefit from a multifaceted approach.

One such project comes from Stephen P. Luby, a professor of medicine and new senior fellow at FSI and the Stanford Woods Institute for the Environment. His project aims to curb pollution from Bangladeshi brick kilns, which may seem like a strange topic for Luby, who studies infectious diseases. But by broadening the viewpoint, the issue is more complex than only replacing the kilns with more efficient models. Solving the problem requires an understanding of social pressures and government regulations as well.

“I’m interested in working with people who want to solve real problems,” Luby says, explaining what brought him to Stanford. “FSI collaboration can really convene the group.” The “intensely interdisciplinary” nature of the project made it perfect for FSI, he says.

“That kind of project can have a real impact on health,” says Krasner, who adds that interdisciplinary research is key. “It typifies the kind of work that we like to support with the Action Fund.”

Another project will study electricity in East Africa, headed by economics professor and FSI Senior Fellow Frank Wolak. Households powered by solar batteries are found throughout the region, but until recently it has been difficult to determine how the power is being used within the home. Wolak’s team will use iPad tools to track household appliance usage and investigate how households are making decisions about power consumption. The double-faceted approach will answer crucial questions related to the distribution and use of power in the developing area.

Mariano-Florentino Cuéllar, co-director of FSI’s Center on International Security and Cooperation (CISAC) and incoming director of FSI, was awarded an Action Fund grant to study refugee communities around the world. Cuéllar, a law professor, will focus on a renewed approach to refugee camps for the United Nations High Commissioner for Refugees (UNHCR), at the U.N.’s request. In addition to Cuéllar’s background in law, the project will also employ students to help rethink camp logistics, architects focused on improving camp design and CISAC’s expertise in maintaining a collaboration with UNHCR.

In three previous rounds of funding since the Action Fund was established in 2010, $694,000 has been awarded to support 19 research projects.

Throughout the spring, past projects will be featured during Action Fund Fridays in Encina Hall. Topics will range from medical technology in India to poverty concerns in rural Africa. Events will be held at noon on March 22, April 26, May 10, May 24 and June 7. 

For more information, visit http://fsi.stanford.edu/events/series/2900 or contact Elena Cryst at 650.723.3369.

 

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The event is now full. Please RSVP here to add your name to the waitlist. An email will be sent out on the day of the event to let you know of your status.

Join us for a panel of 5 successful and sought after VCs, advisors & mentors who have worked with hundreds of Silicon Valley firms, including Affymax, Apple, Codexis, Digital Fuel, Synopsys, Wild Pockets, and Yahoo. Then dive into one of five small group sessions led by the speakers on topics including new essential tools, how to select initial team members, and how to use resources efficiently. Finally, get to know the speakers and fellow attendees during the networking reception while enjoying light snacks and beverages. The event’s interactive format will give entrepreneurs from the Stanford community insight into what kills most companies and what skills you need to survive... and prosper!

Participating in the panel and leading the breakout sessions will be:

Steven P. Bird, Co-Founder & General Partner | Focus Ventures
John Montgomery, Partner | Montgomery & Hansen
Jeff Grabow, West Region Venture Capital Leader| Ernst & Young
Cindy Padnos, Founder & Managing Partner | Illuminate Ventures
Bob Pavey, Partner | Morgenthaler Ventures

Marguerite Gong Hancock, Associate Director | SPRIE, Stanford Graduate School of Business (panel moderator)

THIS EVENT IS OPEN TO STANFORD STUDENTS, ALUMNI, FACULTY, & STAFF

SPACE IS LIMITED SO AN RSVP IS REQUIRED

QUESTIONS: Contact Rustin Crandall with SPRIE at Rustin.Crandall@GSB.STANFORD.EDU

This event is part of Stanford E-Week 2013.

Oberndorf Event Center, 3rd Floor North Building, Stanford Graduate School of Business

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The United States commercial nuclear industry started just a few years following the conclusion of the second world war with the start of operation of the Shippingport reactor. Over a relatively short period of time, the industry grew to over one hundred reactors all based fundamentally on the same light water reactor technology that served the naval nuclear program well. Since the start of the industry, the nuclear power research and development community has explored a large number of reactor concepts for a variety of conventional and not so conventional applications. Many of these technologies were demonstrated as both test reactors and prototypical demonstration reactors. Despite the promise of many of these concepts, the commercialization cases for many of these technologies have failed to emerge. In this talk I will discuss the barriers reactor vendors currently face in the United States and the inherent challenges between promoting evolutionary versus revolutionary nuclear technologies. I will then discuss the prospects for the development of advanced commercial reactor technology abroad with an emphasis on the Chinese nuclear program. In particular, I will discuss recent developments in their advanced light water reactor program, high temperature gas reactor demonstration, and thorium molten salt reactor program.


About the speaker: Dr. Edward Blandford is an Assistant Professor of Nuclear Engineering at the University of New Mexico. Before coming to UNM, Blandford was a Stanton nuclear security fellow at the Center for International Security and Cooperation (CISAC) at Stanford University. His research focuses on advanced reactor thermal-fluids, best-estimate code validation, reactor safety, and physical protection strategies for critical nuclear infrastructure. Blandford received his PhD in Nuclear Engineering from the University of California, Berkeley in 2010.

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Edward Blandford Assistant Professor of Nuclear Engineering Speaker University of New Mexico
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Cloud Computing is rapidly transforming not only computing, but the very fundamentals of how we process, store, and use information—and information is the very basis of civilization.  Cloud Computing is historically unique by simultaneously being an innovation ecosystem, production platform, and global marketplace. While the technology and business models are almost inherently global in scale, national politics and regulations will powerfully influence how Cloud Computing unfolds across the world. Critical issues such as information privacy (who gets to see and use information), security (how to protect information from unauthorized access), and communications network policy (the political economy of broadband and wireless networks) will be settled at the national or regional level. There are powerful tensions as US-based multinational firms are rapidly taking over the global Cloud Computing industry. What are the appropriate frameworks to understand how the competitive dynamics are unfolding? What are the options for national-level players? How should we understand the policy issues as they unfold? What is the role of Japan and Asia as this transformation unfolds?

Kenji Kushida is the Takahashi Research Associate in Japanese Studies at the Walter H. Shorenstein Asia-Pacific Research Center. He holds a PhD in political science from the University of California, Berkeley, and was a graduate research associate at the Berkeley Roundtable on the International Economy. Kushida has an MA in East Asian studies and BAs in economics and East Asian studies, all from Stanford University.

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Former Research Scholar, Japan Program
kenji_kushida_2.jpg MA, PhD
Kenji E. Kushida was a research scholar with the Japan Program at the Walter H. Shorenstein Asia-Pacific Research Center from 2014 through January 2022. Prior to that at APARC, he was a Takahashi Research Associate in Japanese Studies (2011-14) and a Shorenstein Postdoctoral Fellow (2010-11).
 
Kushida’s research and projects are focused on the following streams: 1) how politics and regulations shape the development and diffusion of Information Technology such as AI; 2) institutional underpinnings of the Silicon Valley ecosystem, 2) Japan's transforming political economy, 3) Japan's startup ecosystem, 4) the role of foreign multinational firms in Japan, 4) Japan's Fukushima nuclear disaster. He spearheaded the Silicon Valley - New Japan project that brought together large Japanese firms and the Silicon Valley ecosystem.

He has published several books and numerous articles in each of these streams, including “The Politics of Commoditization in Global ICT Industries,” “Japan’s Startup Ecosystem,” "How Politics and Market Dynamics Trapped Innovations in Japan’s Domestic 'Galapagos' Telecommunications Sector," “Cloud Computing: From Scarcity to Abundance,” and others. His latest business book in Japanese is “The Algorithmic Revolution’s Disruption: a Silicon Valley Vantage on IoT, Fintech, Cloud, and AI” (Asahi Shimbun Shuppan 2016).

Kushida has appeared in media including The New York Times, Washington Post, Nihon Keizai Shimbun, Nikkei Business, Diamond Harvard Business Review, NHK, PBS NewsHour, and NPR. He is also a trustee of the Japan ICU Foundation, alumni of the Trilateral Commission David Rockefeller Fellows, and a member of the Mansfield Foundation Network for the Future. Kushida has written two general audience books in Japanese, entitled Biculturalism and the Japanese: Beyond English Linguistic Capabilities (Chuko Shinsho, 2006) and International Schools, an Introduction (Fusosha, 2008).

Kushida holds a PhD in political science from the University of California, Berkeley. He received his MA in East Asian Studies and BAs in economics and East Asian Studies with Honors, all from Stanford University.
Kenji E. Kushida Takahashi Research Associate in Japanese Studies Speaker Shorenstein Asia-Pacific Research Center, Stanford University
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