The Firewall Technology Study of Network Perimeter Security

2012 ◽  
Author(s):  
Huang Ling-Fang
Keyword(s):  
Technology Study

scholarly journals An Assessment of the Feasibility and Effectiveness of Distance Learning for Students With Severe Developmental Disabilities and High Behavioral Needs

2021 ◽  
Author(s):  
Melaura Andree Erickson Tomaino ◽  
Alissa L. Greenberg ◽  
Sarah Ann Kagawa-Purohit ◽  
Sagui A. Doering ◽  
Edward Steven Miguel
Keyword(s):  
Distance Learning ◽  
Developmental Disabilities ◽  
Severe Disabilities ◽  
Technology Study ◽  
Educational Benefits ◽  
Additional Information ◽  
Behavioral Needs ◽  
Severe Developmental Disabilities ◽  
Learning Programs ◽  
Students With Severe Disabilities

AbstractSchools across the country closed their doors during the COVID-19 pandemic. These measures impacted all students, as schools, educators, and families grappled with the realities of transitioning to distance-learning platforms. The research on distance learning is still in its early phases. However, almost no research exists on educating students with severe disabilities and high behavioral needs using this technology. Study 1 collected survey data from students’ families and their educators on the feasibility and effectiveness of distance-learning programs when working with students with severe developmental disabilities and high behavioral needs. Results indicated that parents and educators had generally neutral attitudes toward distance learning, although educators agreed that their students were obtaining educational benefits during distance learning. Study 2 further examined the effects of a transition to distance learning on students’ Individualized Education Plan (IEP) goal progress. Analyses revealed that students maintained about half of the skills addressed in their IEPs and made progress on an additional quarter of their IEP goals. Findings contribute to a much-needed literature base on distance learning and provide additional information as to the feasibility and effectiveness of distance learning with students with severe developmental disabilities and high behavioral needs. Future work is needed to determine best practices for distance learning with this population.

Application of Lipozyme 10,000 L (fromRhizomucormiehei) in Dry Fermented Sausage Technology:  Study in a Pilot Plant and at the Industrial Level

1997 ◽  
Vol 45 (5) ◽  
pp. 1972-1976 ◽  
Author(s):  
Izaskun Zalacain ◽  
M. Jose Zapelena ◽  
M. Paz De Peña ◽  
Iciar Astiasarán ◽  
José Bello
Keyword(s):  
Pilot Plant ◽  
Technology Study ◽  
Fermented Sausage ◽  
Dry Fermented Sausage ◽  
Industrial Level

Mineral Processing Technology Study on a Lean Hematite Ore with Finely-Disseminated Minerals

2013 ◽  
Vol 303-306 ◽  
pp. 2473-2476
Author(s):  
Wei Zhi Wang ◽  
Li Hui Zhou ◽  
Chun Guang Yang
Keyword(s):  
Mineral Processing ◽  
Low Grade ◽  
Iron Recovery ◽  
Technology Study ◽  
Complex Composition ◽  
Flotation Process ◽  
Iron Concentrate ◽  
Second Stage ◽  
Fine Grain ◽  
Hematite Ore

The mineral processing experimental research was carried out on the hematite bearing characteristics of low grade, fine grain,complex composition. The results showed that using the technological flowsheet of “stage grinding- low intensity magnetic separation”, the iron concentrate with recovery of 36.56% and grade of 65.85% Fe can be obtained. And the iron concentrate with recovery of 17.23% and grade of 63.53% Fe can be obtained by “stage grinding-HIMS process-reverse flotation” process. The final iron concentrate with TFe grade of 65.10%,yield of 19.19% and total iron recovery of 53.79% from the raw ores with TFe grade of 23.41％ was obtained, with the first stage grinding size being 55% -0.074mm and the second stage,93% -0.074mm.

A novel exploration technique using the microbial fingerprint of shallow sediment to detect hydrocarbon microseepage and predict hydrocarbon charge — An Argentinian case study

2021 ◽  
pp. 1-79
Author(s):  
Alin G. Chitu ◽  
Mart H. A. A. Zijp ◽  
Jonathan Zwaan
Keyword(s):  
Machine Learning ◽  
Oil Field ◽  
Dna Fingerprint ◽  
Evolutionary Constraint ◽  
Technology Study ◽  
Gas Field ◽  
Hydrocarbon Microseepage ◽  
Hydrocarbon Charge ◽  
Abundance And Distribution

The fundamental assumption of many successful geochemical and geomicrobial technologies developed in the last 80 years is that hydrocarbons leak from subsurface accumulations vertically to the surface. Driven by buoyancy, the process involves sufficiently large volumes directly measurable or indirectly inferable from their surface expressions. Even when the additional hydrocarbons are not measurable, their presence slightly changes the environment, where complex microbial communities live, and acts as an evolutionary constraint on their development. Since the ecology of this ecosystem is very complicated, we propose to use the full-microbiome analysis of the shallow sediments samples instead of targeting a selected number of known species, and the use of machine learning for uncovering the meaningful correlations in these data. We achieve this by sequencing the microbial biomass and generating its “DNA fingerprint”, and by analyzing the abundance and distribution of the microbes over the dataset. The proposed technology uses machine learning as an accurate tool for determining the detailed interactions among the various microorganisms and their environment in the presence or absence of hydrocarbons, thus overcoming data complexity. In a proof-of-technology study, we have taken more than 1000 samples in the Neuqu謠Basin in Argentina over three distinct areas, namely, an oil field, a gas field, and a dry location outside the basin, and created several successful predictive models. A subset of randomly selected samples was kept outside of the training set and blinded by the client operator, providing the means for objectively validating the prediction performance of this methodology. Uncovering the blinded dataset after estimating the prospectivity revealed that most of these samples were correctly predicted. This very encouraging result shows that analyzing the microbial ecosystem in the shallow sediment can be an additional de-risking method for assessing hydrocarbon prospects and improving the Probability Of Success(POS) of a drilling campaign.

The Law Technology Study and the Mechanism Analysis of Small-Size Machined by Electro Jet Machining

2012 ◽  
Vol 499 ◽  
pp. 179-185
Author(s):  
Zhi Bo Yin ◽  
Fu Yuan Li ◽  
C.X. Wang
Keyword(s):  
Duty Cycle ◽  
Material Removal ◽  
Electrochemical Machining ◽  
Corrosion Mechanism ◽  
Mechanism Analysis ◽  
Technology Study ◽  
Original Experiment ◽  
The Law ◽  
Faraday Law ◽  
Main Factor

In order to research the Law technology and the equipment performance of Electro Jet, The institute developed an electro jet machine. Through a large number of experiments on this machine, the author concluded its process law and analysis the corrosion mechanism to the removed process. The results show that, duty cycle and frequency have a certain effect on the machine accuracy, and duty cycle is the main factor of aperture morphology. When duty cycle varies from 30%~40%, the stray corrosion is less. Frequency affects the depth seriously, based on the original experiment, voltage, duty cycle. Frequencies were not interactive within the scope of the study. The corrosion of anodic workpiece satisfies Faraday law by the study of material removal mechanism. Current efficiency is less than 1, and it’s 40%~60%.current density is 2~4.5A/mm2, that is larger than ordinary electrochemical machining.

Electron Micro Technology Study on BN Fiber’s Microcosmic Structure and Mechanics Properties

2012 ◽  
Vol 588-589 ◽  
pp. 104-107
Author(s):  
Qing Tian Li
Keyword(s):  
Mechanical Properties ◽  
Scientific Basis ◽  
Manufacturing Technology ◽  
Technology Study ◽  
Compound Material ◽  
Transmission Electron ◽  
Anti Oxidant ◽  
Micro Technology ◽  
Compound Materials ◽  
Analytical Technology

This paper uses transmission electron microscope technology, studies microcosmic structure’ s feature of BN fiber, clarifies existing crystal structure’s state of BN fiber during its producing and transform course. It is studied that BN fiber has a sound mechanical properties, which most of crystalline phase is turbine layer phase and whose nitrogen is high and size is small .During the course of BN fiber’s producing, adding suitable tension from axial can promote directional arrange of BN fiber’s surface crystalline grain and put forward the improving direction of manufacturing technology in order to improve materials’ mechanical properties. BN fiber(indicated by BNf) is a kind of new inorganic material. Because of its fine stable, corrosion-resisting, anti-oxidant properties and high ability of absorbing neutron and so on, it is attached more and more importance and it get constant development and usefulness. BNf and ceramics, metal, various compound materials made of resin material can be used in metallurgy, electron, aviation etc science and technology fields. But the intensity of BNf and its elasticity modulus are lower than basic fundamental material. When BNf’s compound material get fine properties above mentioned, the mechanics properties of the material will drop. So its application degree will be limited to a certain extent. In order to improve and raise BNf’s mechanics properties, this essay makes use of electron micro analytical technology to study its microcosmic structure and mechanics properties, providing scientific basis for designing reasonable manufacturing technology.

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