Results 21 to 30 of about 268,793 (310)

Improvement of lipase production from Geotrichum sp. in shaken flasks [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2012
This work is focused on the study of different variables on inoculum build-up aiming to improve the lipase production by Geotrichum sp. by means a sequential strategy of experimental design.
Maldonadoa Resende Rafael, Pancieraa Luiz André, Macedob Alves Gabriela, Mazuttic Marcio A., Maugeria Francisco, Rodriguesa Isabel Maria   +5 more
doaj   +1 more source

Statistical optimization for tannase production by Aspergillus tubingensis in solid-state fermentation using tea stalks

Electronic Journal of Biotechnology, 2015
Background: A sequential statistical strategy was used to optimize tannase production from Aspergillus tubingensis using tea stalks by solid-state fermentation.
Anfeng Xiao, Yufeng Huang, Hui Ni, Huinong Cai, Qiuming Yang   +4 more
doaj   +1 more source

Towards sequential statistical testing as some standard: Pearson’s correlation coefficient [PDF]

, 2014
[english] In standard statistical packages sequential tests are seldom and when they are offered, they mainly concern just tests about means.
Yanagida, Takuya, Kubinger, KD, Schneider, B, Schneider, Berthold, Rasch, D, Yanagida, T, Rasch, Dieter, Kubinger, Klaus D.   +7 more
core   +1 more source

Single step biotransformation of corn oil phytosterols to boldenone by a newly isolated Pseudomonas aeruginosa

Biotechnology Reports, 2016
A new potent Pseudomonas aeruginosa isolate capable for biotransformation of corn oil phytosterol (PS) to 4-androstene-3, 17-dione (AD), testosterone (T) and boldenone (BOL) was identified by phenotypic analysis and 16S rRNA gene sequencing.
Mohamed Eisa, Heba El-Refai, Magdy Amin
doaj   +1 more source

Android malware detection method based on permission sequential pattern mining algorithm

Tongxin xuebao, 2013
The permissions requested by Android applications reflect the behavior sequence of the application. While a generation of malicious behavior usually requires the cooperation of multiple permissions, so mining the association be-tween permissions can ...
Huan YANG, Yu-qing ZHANG, Yu-pu HU, Qi-xu LIU   +3 more
doaj   +2 more sources

Sequential methods for design-adaptive estimation of discontinuities in regression curves and surfaces [PDF]

, 2003
In fault-line estimation in spatial problems it is sometimes possible to choose design points sequentially, by working one’s way gradually through the “response plane,” rather than distributing design points across the plane prior to conducting ...
Molchanov, Ilya, Hall, Peter
core   +1 more source

Statistically Efficient Bayesian Sequential Experiment Design via Reinforcement Learning with Cross-Entropy Estimators

, 2023
Reinforcement learning can learn amortised design policies for designing sequences of experiments. However, current amortised methods rely on estimators of expected information gain (EIG) that require an exponential number of samples on the magnitude of the EIG to achieve an unbiased estimation.
Blau, Tom, Chades, Iadine, Dezfouli, Amir, Steinberg, Daniel, Bonilla, Edwin V.   +4 more
openaire   +2 more sources

Particle methods for maximum likelihood estimation in latent variable models [PDF]

, 2008
Standard methods for maximum likelihood parameter estimation in latent variable models rely on the Expectation-Maximization algorithm and its Monte Carlo variants.
Davy, Manuel, Johansen, Adam M., Adam M. Johansen, Doucet, Arnaud, Doucet, A, Arnaud Doucet, Manuel Davy, Johansen, AM, Davy, M   +8 more
core   +1 more source

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye, Chimezie Okwuonu, Evelyn Idam, Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Zinnah Aloziem, Blossom Amamchukwu, Patience Elimia, Mkpoikanabasi Obot‐Obot, Henry Mbakwe, Praises Maduagwuna, Olatunji Akinrodoye, Chiamaka Anyanwu, Benjamin Anyanwu, Adedamola Akinsiku, Oluwatoyin A. Akinsiku, Muzamil O. Hassan, Fatiu A. Arogundade, Olalekan E. Ojo, Homayemem Weli, Jesupelumi Adenihun, Aderemi Adelaja, Ebun Bamgboye, Olalekan Olatise, Ade E. Faponle, Ayoola Odeyemi, Michael Muoka, Stephen Asaolu, Qudrat Busari, Blessing Dawudu, Michael Naiyeju, Rasheed A. Balogun   +33 more
wiley   +1 more source

Sequential boundaries approach in clinical trials with unequal allocation ratios

BMC Medical Research Methodology, 2006
Background In clinical trials, both unequal randomization design and sequential analyses have ethical and economic advantages. In the single-stage-design (SSD), however, if the sample size is not adjusted based on unequal randomization, the power of the ...
Ayatollahi Seyyed, Jafari Peyman, Behboodian Javad   +2 more
doaj   +1 more source