Results 61 to 70 of about 97,812 (355)

Frontiers of Stochastically Nondominated Portfolios [PDF]

Econometrica, 2003
We consider the problem of constructing a portfolio of finitely many assets whose returns are described by a discrete joint distribution. We propose mean-risk models that are solvable by linear programming and generate portfolios whose returns are nondomi- nated in the sense of second-order stochastic dominance.
Andrzej Ruszczynski, Robert J. Vanderbei
openaire   +1 more source

Information Transmission Strategies for Self‐Organized Robotic Aggregation

Advanced Robotics Research, EarlyView.
In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng, Zihan Li, Yifeng Shao, Jinhao Liu, Li Yu, Shuguang Li   +5 more
wiley   +1 more source

Measurement of the technical efficiency of small pineapple farmers in Santander, Colombia: a stochastic frontier approach

Revista de Economia e Sociologia Rural, 2013
The objective of this study is to estimate the levels of technical efficiency of the small pineapple farmers of Santander, Colombia, using the stochastic frontier approach. In addition, this study attempts to determine whether the acreage and some of the
Juan C. Trujillo, Wilman J. Iglesias
doaj   +1 more source

N, S Co‐Doped Carbon Quantum Dots‐Riboflavin Composite Photosensitizers for Enhanced Iontophoresis‐Assisted Corneal Cross‐Linking

Advanced Science, EarlyView.
This study explores the use of N, S co‐doped carbon quantum dots (NS‐CQDs) as carriers for riboflavin, creating NS‐CQDs‐RF composite photosensitizers. These composites improve riboflavin absorption, enhance ROS generation efficiency, and preserve corneal epithelium integrity.
Tinghong Xu, Yong Liu, Wenjing Zhang, Qiuruo Jiang, Yi Jin, Liangzheng Lin, Lumeng Wang, Zhanhao Gu, Mimi Lin, Shihao Chen   +9 more
wiley   +1 more source

Productivity Spillovers from Foreign Direct Investment: What If Productivity is No Longer a Black Box?

The South East Asian Journal of Management, 2013
While the positive productivity spillover from Foreign Direct Investment (FDI) to domestic owned firms in host countries is unequivocally emphasized in theory, the empirical evidence is contradictory.
Toan Thang Tran
doaj   +1 more source

Temporal and Cell‐Specific Regulation of Synaptic Homeostasis by the Chromatin Remodeler Chd1

Advanced Science, EarlyView.
Chd1, the Drosophila homologue of mammalian CHD2 ‐ a gene linked to autism, epilepsy, and intellectual disability, is required for synaptic homeostatic plasticity. Chd1 in glia is necessary for the rapid induction of synaptic homeostasis, whereas Chd1 in motoneurons, muscle, and glia is critical for long‐term maintenance.
Danielle T. Morency, Tao Cui, Yimei Cai, Chloe Lok, Rachel E. Nokku, Ruoxian Huang, Grace L. Chu, Yumeng Xie, Saleem W. Abu‐Tayeh, Kaikai He, Chengjie Qiu, Junyi Wang, Paxton M. Paganelli, Ting Wang, Gabrielle Williams, Sreejith Nair, Huadong Pei, Dion K. Dickman, Stefano Vicini, Tingting Wang   +19 more
wiley   +1 more source

Tumor‐Derived Alpha‐1 Antitrypsin Promotes Liver Metastasis of Colorectal Cancer Through the Neutrophil Extracellular Traps–CCDC25 Pathway

Advanced Science, EarlyView.
ABSTRACT Liver metastasis is a leading cause of mortality in colorectal cancer (CRC), where the inflammatory tumor microenvironment, specifically neutrophil infiltration, significantly promotes metastatic colonization. This study reveals a pro‐metastatic role for alpha‐1 antitrypsin (A1AT) in CRC liver metastasis via a dual mechanism involving ...
Qian Fei, Chunning Li, Lei Zhan, Xiaoyan Li, Yan Hui, Yue Jin, Jing Zhang, Lu Yang, Xin Sun, Xiaoxi Li, Qian Dong, Jingdong Zhang   +11 more
wiley   +1 more source

ANALISIS KINERJA USAHATANI PADI SAWAH DI KECAMATAN TENGGARONG SEBERANG DENGAN PENDEKATAN STOCHASTIC FRONTIER ANALYSIS

Ziraa'ah: Majalah Ilmiah Pertanian
Analysis of Paddy Farming Performance in Tenggarong Seberang with Stochastic Frontier Analysis Approach.  Providing food, especially rice, requires efforts to increase the productivity of rice farming.
Mariyah Mariyah, Rita Mariati, Eko Harri Yulianto Arifin   +2 more
doaj   +1 more source

Farm Technology and Technical Efficiency: Evidence from Four Regions in China [PDF]

In this paper we fit stochastic frontier production functions to data for Chinese farms grouped into each of four regionshousehold farm; labor migration; land fragmentation; stochastic production frontier; technical ...
Chen, Zhuo, Huffman, Wallace, Rozelle, Scott   +2 more
core  

Passivation‐Induced Species Dynamics and Microstructural Evolution in Solid‐State Lithium–Sulfur Cathodes

Advanced Science, EarlyView.
The formation of insulating Li2S during discharge in solid‐state lithium–sulfur batteries passivate reaction sites and limits sulfur utilization. In this work, a microstructure‐resolved modeling framework coupling transport and reaction kinetics is developed to predict charge–discharge behavior and reveal particle‐scale species evolution and incomplete
Arpan K. Sharma, Bairav S. Vishnugopi, Elif Pınar Alsaç, Matthew T. McDowell, Partha P. Mukherjee   +4 more
wiley   +1 more source