Abstract:
:Due to a wide range of applications, sand casting occupies an important position in modern casting practice. The main purpose of this study was to optimize the performance parameters of sand casting based on grey relational analysis and predict the missing data using back propagation (BP) neural network. First, the influence of human factors was eliminated by adopting the objective entropy weight method, which also saved manpower. The larger variation degree in the evaluation indicators, indicating that the evaluated projects had good discrimination in this regard, the larger weight should be given to these evaluation indicators. Second, the performance parameters of sand casting were optimized based on grey relational analysis, providing a reference for sand milling. The larger the grey relational degree, the closer the evaluated project was to the ideal project. Third, this paper provided a new method for determining the number of hidden neurons in a network according to the mean square error of training samples, and venting quality was predicted based on BP neural network. The relevant theory was deduced before predicting missing data, such that there will be a general understanding regarding the prediction principle of BP neural network. Fourth, to demonstrate the validity of BP neural network adopted in the process of missing data prediction, grey system theory was applied to compare the result of missing data prediction.
journal_name
R Soc Open Scijournal_title
Royal Society open scienceauthors
Xu Q,Xu K,Li L,Yao Xdoi
10.1098/rsos.181860subject
Has Abstractpub_date
2019-08-07 00:00:00pages
181860issue
8issn
2054-5703pii
rsos181860journal_volume
6pub_type
杂志文章abstract::In the paper, the isomorphous S O 4 ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.180919
更新日期:2019-01-23 00:00:00
abstract::Planar potentiometric NO2 sensors based on 8YSZ (8 mol% Y2O3-doped ZrO2) were prepared with WO3 sensing electrode material. The various electrode microstructures prepared by different sintering temperatures were characterized by field emission scanning electron microscopy (SEM), and the microstructure influences on th...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.190526
更新日期:2019-07-10 00:00:00
abstract::Chronic graft-versus-host disease (cGVHD) is a severe complication of allogeneic haematopoietic stem cell transplantation. There is a growing understanding of cGVHD, and several effective therapies for cGVHD have been reported. However, pancreatic cGVHD is a potentially untapped study field. Our thought-provoking stud...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.181067
更新日期:2018-10-17 00:00:00
abstract::There is a long-standing interest in behavioural ecology, exploring the causes and correlates of consistent individual differences in mean behavioural traits ('personality') and the response to the environment ('plasticity'). Recently, it has been observed that individuals also consistently differ in their residual in...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.160352
更新日期:2016-10-26 00:00:00
abstract::We model radicalization in a society consisting of two competing religious, ethnic or political groups. Each of the 'sects' is divided into moderate and radical factions, with intra-group transitions occurring either spontaneously or through indoctrination. We also include the possibility of one group violently attack...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.170678
更新日期:2017-08-30 00:00:00
abstract::Analyses of life history and population dynamics are essential for effective population control of wild mammals. We developed a model for the simultaneous estimation of seasonal changes in three parameters-population density, habitat preference and trap catchability of target animals-based on camera-trapping data and ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.200579
更新日期:2020-08-19 00:00:00
abstract::The formation mechanism of pentazolate anion (PZA) is not yet clear. In order to present the possible formation pathways of PZA, the potential energy surfaces of phenylpentazole (PPZ), phenylpentazole radical (PPZ-R), phenylpentazole radical anion (PPZ-RA), PPZ and m-chloroperbenzoic acid (m-CPBA), p-pentazolylphenola...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.172269
更新日期:2018-05-23 00:00:00
abstract::Currently one small, native population of the culturally and ecologically important Lahontan cutthroat trout (Oncorhynchus clarkii henshawi, LCT, Federally listed) remains in the Truckee River watershed of northwestern Nevada and northeastern California. The majority of populations in this watershed were extirpated in...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.171253
更新日期:2017-11-15 00:00:00
abstract::The settlement of reef-building corals is critical to the survival and recovery of reefs. Recent evidence indicates that coral larvae orient towards reef sound, yet the components of the acoustic environment that may attract coral larvae and induce settlement are unknown. Here we investigated the effects of ambient so...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.181358
更新日期:2018-12-12 00:00:00
abstract::Heteroepitaxial growth of aluminum nitride (AIN) has been explored by experiments, but the corresponding growth mechanism is still unrevealed. Here, we use molecular dynamics simulations to study effects of temperature and N : Al flux ratio on deposited AlN. When the temperature increases from 1000 K to 2000 K with an...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.180629
更新日期:2018-08-15 00:00:00
abstract::Ants build complex nest structures by reacting to simple, local stimuli. While underground nests result from the space generated by digging, some leaf- and grass-cutting ants also construct conspicuous aboveground turrets around nest openings. We investigated whether the selection of specific building materials occurs...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.201312
更新日期:2020-10-14 00:00:00
abstract::Improving the specific capacity and electronic conductivity of TiO2 can boost its practical application as a promising anode material for lithium ion batteries. In this work, a three-dimensional networking oxygen-deficient nano TiO2-x/carbon fibre membrane was achieved by combining the electrospinning process with a h...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.170323
更新日期:2017-07-12 00:00:00
abstract::Humans stand out among animals for their unique capacities in domains such as language, culture and imitation, yet it has been difficult to identify cognitive elements that are specifically human. Most research has focused on how information is processed after it is acquired, e.g. in problem solving or 'insight' tasks...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.161011
更新日期:2017-06-21 00:00:00
abstract::Microbial pathogens continue to attract a great deal of attention to manage the termite population. Every bacterium has its own mode of action and in fact, the mechanisms used by bacteria to attack termites remain elusive at the moment. Hence, the objective of this study was to evaluate the susceptibility of subterran...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.200847
更新日期:2020-08-26 00:00:00
abstract::Raster image correlation spectroscopy (RICS) measures the diffusion of fluorescently labelled molecules from stacks of confocal microscopy images by analysing correlations within the image. RICS enables the observation of a greater and, thus, more representative area of a biological system as compared to other single ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.140454
更新日期:2015-06-17 00:00:00
abstract::In several group-living species, individuals' social preferences are thought to be influenced by cooperation. For some societies with fission-fusion dynamics, sex-specific association patterns reflect sex differences in cooperation in within- and between-group contexts. In our study, we investigated this hypothesis fu...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.161081
更新日期:2017-05-03 00:00:00
abstract::We combined clinical, cytokine, genomic, methylation and dietary data from 43 young adult monozygotic twin pairs (aged 22-36 years, 53% female), where 25 of the twin pairs were substantially weight discordant (delta body mass index > 3 kg m-2). These measurements were originally taken as part of the TwinFat study, a s...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.200872
更新日期:2020-10-21 00:00:00
abstract::Aquaculture is the fastest growing food sector and feeds over 3 billion people. Bivalve shellfish aquaculture makes up 25% of global aquaculture production and is worth annually US$19 billion, but continued growth is currently limited by suboptimal diets and limited tools for disease control. New advances in microenca...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.171142
更新日期:2017-11-08 00:00:00
abstract::A recent study reported on a tuberculosis (TB) outbreak in a largely Inuit village. Among newly infected individuals, exposure to additional active cases was associated with an increasing probability of developing active disease within a year. Using binomial risk models, we evaluated two potential mechanisms by which ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.180999
更新日期:2019-03-20 00:00:00
abstract::Much of the immense present day biological diversity of Neotropical rainforests originated from the Miocene onwards, a period of geological and ecological upheaval in South America. We assess the impact of the Andean orogeny, drainage of Lake Pebas and closure of the Panama isthmus on two clades of tropical trees (Cre...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.171561
更新日期:2018-01-31 00:00:00
abstract::Low levels of heterozygosity can have detrimental effects on life history and growth characteristics of organisms but more subtle effects such as those on trade-offs of expensive tissues and morphological laterality, especially of the brain, have not been explicitly tested. The objective of the current study was to in...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.170989
更新日期:2017-12-06 00:00:00
abstract::During the Middle and Late Jurassic, pliosaurid plesiosaurs evolved gigantic body size and a series of craniodental adaptations that have been linked to the occupation of an apex predator niche. Cretaceous pliosaurids (i.e. Brachaucheninae) depart from this morphology, being slightly smaller and lacking the macrophago...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.150552
更新日期:2015-12-23 00:00:00
abstract::[This corrects the article DOI: 10.1098/rsos.150635.]. ...
journal_title:Royal Society open science
pub_type: 已发布勘误
doi:10.1098/rsos.201430
更新日期:2020-11-11 00:00:00
abstract::Sexual signals often compromise camouflage because of their conspicuousness. Pigmentation patterns, on the contrary, aid in camouflage. It was hypothesized that a particular type of pattern-barred plumage in birds, whereby pigmented bars extend across feathers-could simultaneously signal individual quality, because di...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.160195
更新日期:2016-05-04 00:00:00
abstract::Leafcutting bees (Megachile: Megachilidae) cut leaves from various trees, shrubs, wildflowers and grasses to partition and encase brood cells in hollow plant stems, decaying logs or in the ground. The identification of preferred plant species via morphological characters of the leaf fragments is challenging and direct...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.150623
更新日期:2016-03-02 00:00:00
abstract::A key challenge in the fabrication of ferromagnetically filled carbon nano-onions (CNOs) is the control of their thickness, dimensions and electric properties. Up to now literature works have mainly focused on the encapsulation of different types of ferromagnetic materials including α-Fe, Fe3C, Co, FeCo, FePd3 and oth...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.170981
更新日期:2018-01-17 00:00:00
abstract::This study investigated the chemical and nutritional profile and antioxidative properties of cultivated Coprinus comatus. Proximate analysis revealed that C. comatus is rich in carbohydrates, dietary fibres and proteins, and could also be a valuable source of phenolics. Additionally, fat content is low, consisting mai...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.200900
更新日期:2020-09-02 00:00:00
abstract::In mobile social groups, influence patterns driving group movement can vary between democratic and despotic. The arrival at any single pattern of influence is thought to be underpinned by both environmental factors and group composition. To identify the specific patterns of influence driving travel decision-making in ...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.170148
更新日期:2017-07-12 00:00:00
abstract::Using density functional theory approaches, we follow the sequential addition of CF3 functional groups to the surface of the metallic endofullerene species Gd@C60. The presence of gadolinium in the interior of the cage strongly influences the addition sequence. The calculations are able to successfully identify end po...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.180588
更新日期:2018-09-05 00:00:00
abstract::The adaptive significance of zebra stripes has thus far eluded understanding. Many explanations have been suggested, including social cohesion, thermoregulation, predation evasion and avoidance of biting flies. Identifying the associations between phenotypic and environmental factors is essential for testing these hyp...
journal_title:Royal Society open science
pub_type: 杂志文章
doi:10.1098/rsos.140452
更新日期:2015-01-14 00:00:00