Results 81 to 90 of about 165,778 (222)

General‐Purpose Hexagonal Programmable Photonic Integrated Circuit with a >30 GHz Free Spectral Range

Laser &Photonics Reviews, EarlyView.
A compact and low insertion loss programmable photonic circuit is demonstrated based on a 7‐cell hexagonal waveguide mesh with a large free spectral range (FSR) of 31 GHz for a 6‐gate ring resonator configuration. Vernier rings and a dual‐injected ring configuration are demonstrated on this circuit with a further improved FSR of 93 GHz.
Yu Zhang, Xiangfeng Chen, Lukas Van Iseghem, Iman Zand, Hasan Salmanian, Antonio Ribeiro, Wim Bogaerts   +6 more
wiley   +1 more source

基于无限冲激响应的微波光子级联滤波器

Guangtongxin yanjiu, 2014
为进一步拓展微波光子滤波器的FSR（自由谱范围）和提高滤波器的Q值,进行了IIR（无限冲激响应）滤波器分别与FIR（有限冲激响应）滤波器和IIR滤波器级联的研究。分析了两种级联结构的滤波特性并给出了相应的传输函数。IIR滤波器与FIR滤波器级联后的FSR与Q值是IIR滤波器的2n倍;IIR滤波器与IIR滤波器级联后的FSR是各个IIR滤波器的FSR的最小公倍数。用Matlab软件仿真验证了两种级联结构的频率响应特性,实验验证了IIR滤波器与IIR滤波器的级联特性 ...
徐恩明, 王琪, 王飞, 李培丽
doaj  

Strategi Dinas Sosial, Tenaga Kerja dan Transmigrasi dalam Mengurangi Jumlah Pengangguran di Kabupaten Siak [PDF]

, 2015
This study will analyze how the Strategy of Social Service, Manpower and Transmigration in Reducing Unemployment in Siak. Given the number of unemployed either from within or from the outside of the area to look for jobs in Siak government attempted to ...
Piona, I. (Iir), Sujianto, S. (Sujianto)
core  

FMRI Approaches to Mapping Cerebrovascular Reactivity: Comparison of Gradient Echo BOLD and Spin Echo BOLD With Arterial Spin Labeling

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To compare markers of cerebrovascular reactivity (CVR) measured with Gradient Echo (GE, T2*w) and Spin‐Echo (SE, T2w) BOLD fMRI with quantitative physiological CVR measured using ASL. Methods CVR, the ability of blood vessels to dilate and increase cerebral blood flow (CBF), can be investigated with ASL fMRI but has a low signal‐to ...
Sara Pomante, Davide Di Censo, Alessandra Caporale, Fabrizio Fasano, Domenico Zacà, Elizabeth Jane Fear, Francesca Graziano, Manuela Carriero, Lucie Renee Raymonde Chalet, Emma Biondetti, Maria Eugenia Caligiuri, Michael Germuska, Richard Geoffrey Wise, Antonio Maria Chiarelli   +13 more
wiley   +1 more source

CAFS: A Cesium Atomic Frequency Standard for GPS block IIR [PDF]

Kernco, Inc. was selected to design the Cesium Atomic Frequency Standards (CAFS) for the GPS Block IIR NAVSTAR satellites. These spacecraft are scheduled to be launched in the mid-1990's to replenish and upgrade the existing constellation of Global ...
Wisnia, Jeffry A.
core   +1 more source

The Development of Indo‐Iranian Voiced Fricatives

Transactions of the Philological Society, Volume 123, Issue 1, Page 97-115, March 2025.
Abstract The development of voiced sibilants is a long‐standing puzzle in Indo‐Iranian historical phonology. In Vedic, all voiced sibilants are lost from the system, but the details of this loss are complex and subject to debate. The most intriguing development concerns the word‐final ‐aḥ to ‐o in sandhi.
Gašper Beguš
wiley   +1 more source

High Barrier Properties of Butyl Rubber Composites Containing Liquid Rubber and Graphene Oxide

Nanomaterials
The high elasticity and excellent gas barrier properties of rubber composites make them irreplaceable in the field of sealing. Constructing a complicated barrier network to reduce free volume is crucial to improving gas barrier properties.
Jiaye Li, Zhanghao Yang, Shanjun Hu, Xianhong Huang, Stephen Jerrams, Shui Hu, Li Liu, Shipeng Wen   +7 more
doaj   +1 more source

Circulating levels of insulin‐like growth factor I (IGF‐I) and risk of multiple myeloma: An observational and Mendelian randomisation study

British Journal of Haematology, EarlyView.
Summary Evidence for an association between insulin‐like growth factors (IGF) and multiple myeloma (MM) is inconsistent. We examined total IGF‐I concentrations and risk of MM by combining baseline serological data among UK Biobank participants (n = 444 187; 732 incident MM) with a two‐sample Mendelian randomisation (MR) analysis using identified ...
Yolanda Benavente, Sara Hermosa, Nikos Papadimitriou, Alyssa Clay‐Gilmour, Elizabeth E. Brown, Jonathan N. Hofmann, Nathaniel Rothman, Qing Lan, Sonja I. Berndt, Demetrius Albanes, Mark Purdue, Mitchell J. Machiela, Stephen J. Chanock, Parveen Bhatti, Wendy Cozen, Aaron Norman, Susan L. Slager, James R. Cerhan, Vincent Rajkumar, Shaji K. Kumar, Celine M. Vachon, Anne J. Novak, Thomas M. Habermann, Brian K. Link, Gilles Salles, Herve Ghesquieres, Paige M. Bracci, Elizabeth Holly, Rosalie G. Griffin, Michelle A. T. Hildebrandt, Roel C. H. Vermeulen, P. Martijn Kolijn, Henrik Hjalgrim, Karin Ekström Smedby, Harindra Jayasekara, Simon Cheah, Alain Monnereau, Yu Chen, Alan Arslan, Yawei Zhang, Nicola J. Camp, Douglas W. Sborov, Afaf E. G. Osman, Elad Ziv, Immaculata De Vivo, Vijai Joseph, Lauren R. Teras, Alpa V. Patel, Eleanor Kane, Claire M. Vajdic, Adrien Guilloteau, Pierluigi Cocco, Laia Alemany, Juan Sainz, James McKay, Brenda M. Birmann, Delphine Casabonne   +56 more
wiley   +1 more source

Prevalence of Post‐Operative Complications in Autotransplanted Teeth: A Long‐Term Retrospective Cohort

Dental Traumatology, EarlyView.
ABSTRACT Background/Aims To evaluate the prevalence and timing of post‐operative complications following tooth autotransplantation, identify factors associated with earlier diagnosis, and report long‐term survival and success rates. Materials and Methods A single‐centre retrospective cohort study was conducted at a Czech university dental clinic (2003 ...
Juraj Marton, Radovan Žižka, Linda Kučerová, Přemysl Krejčí, Martin Starosta, Zdeněk Pokorný   +5 more
wiley   +1 more source

Catherine de' Medici and the Forest of Orleans: Queenly Participation in Early Modern French Forest Management

Renaissance Studies, EarlyView.
Abstract This essay demonstrates how a gender‐informed, more‐than‐human lens can provide new ways to analyse how the role of a queen in forestry management was conceptualised by sixteenth‐century professional men. It explores these ideas as they are presented in a work published by Guillaume Martin, Lieutenant General of the forests and waterways of ...
Susan Broomhall
wiley   +1 more source