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| 1 | Design and analysis of extended depth of focus metalenses for achromatic computational imaging显示文摘Metasurface optics have demonstrated vast potential for implementing traditional optical components in an ultracompact and lightweight form factor.Metasurfaces,however,suffer from severe chromatic aberrations,posing serious limitations on their practical use.Eixisting approaches for circumventing this involving dispersion engineering are limited to small apertures and often entail multiple scatterers per unit cell with small feature sizes.Here,we prescnt an alternative technique to mitigatc chromatic aberration and demonstrate high-quality,full-color imaging using extended depth of focus(EDOF)metalenses and computational reconstruction.Previous EDOF metalenses have relied on cubic phase masks,where the image quality suffers from asymmetric artefacts.Here we demonstrate the use of rotationally symmetric masks,including logarithmic-aspherical,and shifted axicon masks,to mitigate this problem.Our work will inspire further development in achromatic metalenses beyond dispersion engineering and hybrid optical-digital metasurface systems. | LUOCHENG HUANA JAMES WHITEHEAD SHANE COLBURN ARKA MAJUMDAR | 2020 | Photonics Research2020，8，10： | 5 |
| 2 | Free-space optical neural network based on thermal atomic nonlinearity显示文摘As artificial neural networks(ANNs)continue to make strides in wide-ranging and diverse fields of technology,the search for more efficient hardware implementations beyond conventional electronics is gaining traction.In particular,optical implementations potentially offer extraordinary gains in terms of speed and reduced energy consumption due to the intrinsic parallelism of free-space optics.At the same time,a physical nonlinearity—a crucial ingredient of an ANN—is not easy to realize in free-space optics,which restricts the potential of this platform.This problem is further exacerbated by the need to also perform the nonlinear activation in parallel for each data point to preserve the benefit of linear free-space optics.Here,we present a free-space optical ANN with diffraction-based linear weight summation and nonlinear activation enabled by the saturable absorption of thermal atoms.We demonstrate,via both simulation and experiment,image classification of handwritten digits using only a single layer and observed 6% improvement in classification accuracy due to the optical nonlinearity compared to a linear model.Our platform preserves the massive parallelism of free-space optics even with physical nonlinearity,and thus opens the way for novel designs and wider deployment of optical ANNs. | Albert Ryou James Whitehead Maksym Zhelyeznyakov Paul Anderson Cem Keskin Michal Bajcsy Arka Majumdar | 2021 | Photonics Research2021，9，4： | 2 |
| 3 | Complete genomes of two clinical Staphylococcus aureus strains:evidence for the rapid evolution of virulence and drug resistance显示文摘 | Holden MT Feil EJ Lindsay JA Peacock SJ Day NP Enright MC Foster TJ Moore CE Hurst L Atkin R Barron A Bason N Bentley SD Chillingworth C Chillingworth T Churcher C Clark L Corton C Cronin A Doggett J Dowd L Feltwell T Hance Z Harris B Hauser H Holroyd S Jagels K James KD Lennard N Line A Mayes R Moule S Mungall K Ormond D Quail MA Rabbinowitsch E Rutherford K Sanders M Sharp S Simmonds M Stevens K Whitehead S Barrell BG Spratt BG Parkhill J | 2004 | Proc Natl Acad Sci USA2004，101，26： | 1 |
| 4 | Toward an understanding of bug fix patterns显示文摘 | Kai Pan Sunghun Kim E. James Whitehead | 2009 | Empirical Software Engineering2009，，3： | 1 |
| 5 | Classifying Software Changes: Clean or Buggy?显示文摘 | Kim Sunghun Whitehead Jr E James Zhang Yi | 2008 | IEEE Transactions on Software Engineering2008，，2： | 1 |
| 6 | A phase II study of farnesyl transferase inhibitor R115777 in pancreatic cancer: A Southwest oncology group (SWOG 9924) study显示文摘 | John S. Macdonald Sheryl McCoy Robert P. Whitehead Syma Iqbal James L. Wade Jeffrey K. Giguere James L. Abbruzzese | 2005 | Investigational New Drugs2005，，5： | 1 |
| 7 | Glut4-at the cross roads between membrane trafficking and signal transduction显示文摘 | Simpson F Whitehead JP James DE | 2001 | Traffic2001，2，： | 1 |
| 8 | Cost of increased energy efficiency for residential water heater显示文摘 | Lekov Alex B Lutz James D Camilla Dunham Whitehead | 2000 | ASHRAE Transactions2000，106，2： | 1 |
| 9 | Genomic and genetic characterization of the bile stress response of probiotic LactobociUus reuteri ATCC 55730 显示文摘 | Kristi Whitehead James Versalovic Stefan Roos | 2008 | Applied and Environmental Microbiology2008，74，6： | 1 |
| 10 | 文化演化与宗教显示文摘本文着重介绍社会学家贝拉(Robert Bellah)的"宗教演化"。贝拉根据广泛的人类经验提出了一个检验文化和宗教互动的模式,用以揭示通过某些方式把人类宗教性——面对并解决终极问题的认知能力——介入到心灵和社会的互动之中。贝拉认为,伴随着范围广泛的人类经验,宗教象征产生变化,趋向于更为千差万别、完善和理性化。通过系统性的与这些象征性手段相关的方式,宗教在社会中的角色也发生了变化。这些变化作为新的认知能力出现,并在人类社群中发展、传播。贝拉透过时间脉络向前推进,言下之意是较晚出现的宗教解释和组织是更为复杂的模式;但事实上,不同阶段的宗教组织与解释形式有相当程度的重叠,早期社会的模式和解释形式并非简单地由后来出现的解释能力所代替。 | 范丽珠 James Whitehead Evelyn Whitehead | 2013 | 宗教社会学2013，，1： | 1 |
| 11 | CULTURAL EVOLUTION AND RELIGION显示文摘 | Fan Lizhu James Whitehead Evelyn Whitehead | 2012 | 世界宗教文化2012，，5： | 0 |
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