As a common disease, migraine has a high incidence but the pathogenesis is still not clear. Resting-state Functional Magnetic Resonance Imaging (rs-fMRI) is an important research topic in the field of brain medicine, ...
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In this paper, the motion making technique of Japanese traditional handicraft was analyzed by motion analysis system. Two experts were employed as expert and non-expert for comparison. The feature of interval time for...
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Recent studies empirically revealed a relationship between source code comments and code quality. Those studies considered activity-based metrics as quality indicators. Project management tasks often used source code-...
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Because of the uncertainty of drought disaster events, it is often difficult to obtain accurate information of their probability. In this paper, we use information distribution and interior-outer-set model to tackle t...
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Many engineering colleges have been facing the retention problem in engineering programs due to difficulties and lack of knowledge about what really means being an engineer. It is mainly due to the fact that the first...
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ISBN:
(纸本)9789899887572
Many engineering colleges have been facing the retention problem in engineering programs due to difficulties and lack of knowledge about what really means being an engineer. It is mainly due to the fact that the first 3 years are particularly intense and hard. A possible way to overcome this period is to implement a new kind of course more attractive and dynamic, which is the idea of COPEC's engineering education research team, to embed a course with a more interesting activity for students in the first year. It is a short-term workshop in order to show the students the possibilities of performing as engineers in a global environment - a project developed for a private university in order to augment the retention rate in their engineering courses.
Automatic detection of image damaged regions is the key to automatic video image inpainting. Vertical scratches are the common damages in the old film. In this paper, a vertical scratches detection algorithm based on ...
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Yeast has been an indispensable host for synthesizing complex plant-derived naturalcompounds, yet the yields remained largely constrained. This limitation mainly arises from overlookingthe importance of cell and pathw...
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Yeast has been an indispensable host for synthesizing complex plant-derived naturalcompounds, yet the yields remained largely constrained. This limitation mainly arises from overlookingthe importance of cell and pathway suitability during the optimization of enzymes and pathways. Herein,beyond conventional enzyme engineering, we dissected metabolic suitability with a framework forsimultaneously augmenting cofactors and carbon flux to enhance the biosynthesis of heterogenoustriterpenoids. We further developed phospholipid microenvironment engineering strategies, dramaticallyimproving yeast’s suitability for the high performance of endoplasmic reticulum (ER)-localized, ratelimitingplant P450s. Combining metabolic and microenvironment suitability by manipulating only threegenes, NHMGR (NADH-dependent HMG-CoA reductase), SIP4 (a DNA-binding transcription factor)andGPP1 (Glycerol-1-phosphate phosphohydrolase 1), we enabled the high-level production of 4.92 g/L rarelicorice triterpenoids derived from consecutive oxidation of b-amyrin by two P450 enzymes afterfermentation optimization. This production holds substantial commercial value, highlighting the criticalrole of establishing cell suitability in enhancing triterpenoid biosynthesis and offering a versatileframework applicable to various plant natural product biosynthetic pathways.
Autonomous navigation supported by inter-satellite ranging and communication with inter-satellite links(ISL) is the trend of satellite navigation system development. By controlling the direction of phased array antenn...
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ISBN:
(纸本)9789811045905
Autonomous navigation supported by inter-satellite ranging and communication with inter-satellite links(ISL) is the trend of satellite navigation system development. By controlling the direction of phased array antenna flexibly, the agility link can achieve more information from other satellites. However, the efficiency of communication is affected at the same time. In this paper, we describe the data transfer problem when the data is split into several datum units whose hops are limited. We investigate the computational complexity of the problem firstly and it is proved to be an NP-Complete problem. Then we propose a linear programming model for solving the problem. At last, we show that the problem is polynomial solvable when the number of datum units or the number of recipient nodes is equal to 1. The research in this paper is valuable for solving the data transfer problem in the navigation satellite network based on agility link.
This paper for the issue of Satellite information Application chain input task describing and modeling,analyzes the basic process about tasks arising,And this paper will be divided into four satellite missions arrival...
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This paper for the issue of Satellite information Application chain input task describing and modeling,analyzes the basic process about tasks arising,And this paper will be divided into four satellite missions arrival process *** the law has for mission to reach the general *** it is hard to described with general probability *** paper proposes a method based on the EM algorithm fitting PH distributions,and uses PH distribution fitting the application of satellite information chain task input in different *** last,this paper gives experimental analysis to prove its feasibility.
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