scholarly journals Assessment of Dental Arch Reproduction Quality by Using Traditional and Digital Methods

2021 ◽  
Vol 11 (3) ◽  
pp. 1263
Author(s):  
Mateusz Wójcik ◽  
Dariusz Skaba ◽  
Małgorzata Skucha-Nowak ◽  
Marta Tanasiewicz ◽  
Rafał Wiench
Keyword(s):  
Standard Model ◽  
Significant Degree ◽  
Physical Models ◽  
Average Error ◽  
Dental Arch ◽  
Arch Model ◽  
Linear Dimensions ◽  
The Standard Model ◽  
Digital Methods

Background: There exists few scientific reports on the quality of digitally reproduced dental arches, even though digital devices have been used in dentistry for many years. This study assesses the accuracy of the standard dental arch model reproduction using both traditional and digital methods. Methods: The quality of the full upper dental arch standard model reproduction by physical models obtained through traditional and digital methods was compared: gypsum models (SGM) and models printed from data obtained using an intraoral scanner (TPM) (n = 20). All models were scanned with a reference scanner. Comparisons were made using Geomagic Control X program by measuring deviations of the models relative to the standard model and analyzing linear dimensions deviations. Results: The average error of reproduction accuracy of the standard model ranged from 0.0424 ± 0.0102 millimeters (mm) (SGM) to 0.1059 ± 0.0041 mm (TPM). In digital methods, all analyzed linear dimensions were shortened to a statistically significantly degree compared to traditional. The SGM method provided the smallest deviations to a significant degree of linear dimensions from the pattern, and TPM the largest. The intercanine dimension was reproduced with the lowest accuracy, and the intermolar the highest in each method. Conclusions: Traditional methods provided the highest reproduction trueness of the full dental arch and all analyzed linear dimensions. The intercanine dimension was reproduced with the lowest accuracy, and the intermolar the highest in each method, where digital methods shortened all analyzed linear dimensions.

scholarly journals Anonymous Multireceiver Identity-Based Encryption against Chosen-Ciphertext Attacks with Tight Reduction in the Standard Model

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Yi-Fan Tseng ◽  
Chun-I Fan
Keyword(s):  
Standard Model ◽  
Open Problem ◽  
Multiple Receivers ◽  
Identity Based Encryption ◽  
Security Proof ◽  
Cryptographic Primitive ◽  
The Standard Model ◽  
Tight Reduction ◽  
Identity Based

Multireceiver identity-based encryption is a cryptographic primitive, which allows a sender to encrypt a message for multiple receivers efficiently and securely. In some applications, the receivers may not want their identities to be revealed. Motivated by this issue, in 2010, Fan et al. first proposed the concept of anonymous multireceiver identity-based encryption (AMRIBE). Since then, lots of literature studies in this field have been proposed. After surveying the existing works, however, we found that most of them fail to achieve provable anonymity with tight reduction. A security proof with tight reduction means better quality of security and better efficiency of implementation. In this paper, we focus on solving the open problem in this field that is to achieve the ANON-IND-CCA security with tight reduction by giving an AMRIBE scheme. The proposed scheme is proven to be IND-MID-CCA and ANON-MID-CCA secure with tight reduction under a variant of the DBDH assumption. To the best of our knowledge, this is the first scheme proven with tight reducible full CCA security in the standard model.

scholarly journals EXPLORING FRAMED GAUGE THEORY AS BASIS FOR PHYSICAL MODELS

2012 ◽  
Vol 27 (02) ◽  
pp. 1230002 ◽  
Author(s):  
HONG-MO CHAN ◽  
SHEUNG TSUN TSOU
Keyword(s):  
Standard Model ◽  
Higgs Field ◽  
Internal Symmetry ◽  
Physical Models ◽  
Theoretical Structure ◽  
Fermion Fields ◽  
The Standard Model ◽  
Mixing Patterns ◽  
Symmetry Space

It is shown that by introducing as dynamical variables in the formulation of gauge theories the frame vectors (or vielbeins) in internal symmetry space, in addition to the standard gauge boson and matter fermion fields, one obtains: (i) for the su(2) ×u(1) symmetry, the standard electroweak theory with the Higgs field thrown in as part of the framed gauge theoretical structure, (ii) for the su(3) ×su(2) ×u(1) symmetry, a "framed standard model" with, apart from the Higgs field as before, a global su(3) symmetry to play the role of fermion generations, plus some other properties which are shown elsewhere to give to both quarks and leptons hierarchical mass and mixing patterns similar to those experimentally observed. Besides, the "framing" of the standard model as such has brought the particle theory closer in structure to the theory of gravity where vierbeins have long figured as dynamical variables. Although most of the results have already been reported before, time and hindsight have allowed their presentation in this review to be made more transparent and succint.

The effect of model size and ox odour on the alighting response of Glossina morsitans Westwood and G. pallidipes Austen (Diptera: Glossinidae)

1980 ◽  
Vol 70 (2) ◽  
pp. 229-234 ◽  
Author(s):  
J. W. Hargrove
Keyword(s):  
Standard Model ◽  
Glossina Morsitans Morsitans ◽  
Glossina Morsitans ◽  
Host Animal ◽  
Close Vicinity ◽  
Linear Dimensions ◽  
The Standard Model ◽  
Model Size ◽  
Small Model ◽  
Large Model

AbstractThe number of tsetse visiting a black cylindrical model (designed to look like a small host animal) in the Zambesi Valley, Zimbabwe, was estimated by catching them on an expanse of electric netting placed next to the model. The number which alighted was found by electrocuting the flies on the surface of the model on other occasions when the netting was absent. About half the Glossina morsitans morsitans Westw. visiting a stationary small model (a black drum 57 cm long and 37 cm in diametter) in the absence of ox odour alighted on it, but virtually none of the G. pallidipes Aust. alighted. When the linear dimensions of the standard model were increased threefold, about 1·5 times as many tsetse visited its close vicinity. Of these, nearly all the G. morsitans and about one-third of the G. pallidipes alighted on the model. Four to seven times as many tsetse visited the models when the odour of one ox was dispensed near them. When odour was present, about 1·5 times as many tsetse visited the large model as visited the small one. Some 55–85% of G. morsitans visiting the small model in the presence of ox odour alighted, but only about 30% of the male and 20% of the female G. pallidipes alighted. The latter percentages increased to 53 and 62 when the large model was used. A smaller percentage of G. morsitans females landed on the large model in the presence of ox odour than in its absence. With mobile models, significantly more tsetse were taken if electric nets were appended fore and aft of the model. In the absence of electric nets, 2–30 times as many tsetse landed on the large model as on the small one, the effect being greater for female G. morsitans than for males and much greater for G. pallidipes than for G. morsitans. The percentage of visiting flies of both sexes and species that landed was greater when the large model was used.

IMPLEMENTATION ON THE STANDARD MODEL EXPERIMENT ON THE EXAMPLE OF SARATOV FKU IK-2 UFSIN OF RUSSIA

2020 ◽  
pp. 121-125
Author(s):  
Валерий Александрович Казначеев ◽  
Дмитрий Андреевич Шкиль
Keyword(s):  
Standard Model ◽  
Model Experiment ◽  
Correctional Institution ◽  
Correctional Institutions ◽  
Typical Structure ◽  
The Standard Model ◽  
New Type ◽  
Type Of Institution ◽  
Effective Supervision

В данной статье рассматривается внедрение типовой модели проведения эксперимента с целью оценки эффективности надзора за осужденными в местах лишения свободы на примере ФКУ ИК-2 УФСИН по Саратовской области. Для того чтобы отследить эффективность и некоторые пробелы при проведении данного эксперимента, нами были использованы данные статистической отчетности. Разобраны задачи типовой модели, а также цели и предполагаемый результат от ее внедрения. Рассмотрена структура разделения учреждения на сектора и объекты на примере исправительного учреждения Саратовской области. Помимо этого в статье указаны локальные нормативные акты, регламентирующие внедрение данного эксперимента. Приводятся предложения по устранению пробелов и неточностей в ходе проведения эксперимента, а также отслеживанию динамики нарушений установленного порядка отбывания наказаний. Можно сделать вывод о том, что данный эксперимент при использовании предложений, приведенных в настоящей статье, повысит эффективность надзора. This article discusses an experiment on a standard model implementation for effective supervision of prisoners in places of liberty deprivation, the example of Saratov FKU IK-2 UFSIN. In order to track the effectiveness and some gaps in this experiment, we used statistical reporting data. The tasks of the «standard model», as well as the goals and expected result of its implementation are analyzed. A typical structure of the institution's division into sectors and objects is considered on the example of a correctional institution in the Saratov region. In addition, the article indicates several points that should be paid attention to the most effective monitoring of the effectiveness of this experiment, confirmed by statistics, as well as local regulations governing the implementation of this experiment. Suggestions are made to eliminate gaps and inaccuracies in the course of the experiment, as well as to track the dynamics of violations of the established order of serving sentences. It is considered appropriate to change some points when using the standard model experiment in high-security correctional institutions, which is the Saratov FKU IK-2 of the Federal Penitentiary Service of Russia to improve the effectiveness and quality of supervision of convicts. It can be concluded that this experiment, using the suggestions given in this article, will increase the effectiveness of supervision. For greater efficiency, it is necessary to take into account all the above suggestions for monitoring the effectiveness of the experiment, and conducting it in a new type of institution, for people who have not previously served a prison sentence.

scholarly journals The Current Status of the Fermilab Muon g–2 Experiment

Universe ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 43
Author(s):  
Nandita Raha
Keyword(s):  
Standard Model ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
New Physics ◽  
Previous Measurement ◽  
Current Status ◽  
Future Outlook ◽  
The Standard Model ◽  
Very High

The anomalous magnetic moment of the muon can be both measured and computed to a very high precision, making it a powerful probe to test the Standard Model and search for new physics. The previous measurement by the Brookhaven E821 experiment found a discrepancy from the SM predicted value of about three standard deviations. The Muon g–2 experiment at Fermilab will improve the precision to 140 parts per billion compared to 540 parts per billion of E821 by increasing statistics and using upgraded apparatus. The first run of data taking has been accomplished in Fermilab, where the same level of statistics as E821 has already been attained. This paper, summarizes the current experimental status and briefly describes the data quality of the first run. It compares the statistics of this run with E821 and discusses the future outlook.

Indirect measurements in micro-space with the EM

1995 ◽  
Vol 53 ◽  
pp. 598-599
Author(s):  
Sterling P. Newberry
Keyword(s):  
Electron Microscope ◽  
Standard Model ◽  
Particle Physics ◽  
Information Storage ◽  
Storage Space ◽  
Indirect Measurements ◽  
Storage And Retrieval ◽  
Adequate Information ◽  
Compelling Reason ◽  
The Standard Model

At the 1958 meeting of our society, then known as EMSA, the author introduced the concept of microspace and suggested its use to provide adequate information storage space and the use of electron microscope techniques to provide storage and retrieval access. At this current meeting of MSA, he wishes to suggest an additional use of the power of the electron microscope.The author has been contemplating this new use for some time and would have suggested it in the EMSA fiftieth year commemorative volume, but for page limitations. There is compelling reason to put forth this suggestion today because problems have arisen in the “Standard Model” of particle physics and funds are being greatly reduced just as we need higher energy machines to resolve these problems. Therefore, any techniques which complement or augment what we can accomplish during this austerity period with the machines at hand is worth exploring.

An Interview with the Physicist that Her Head in the Universe and Both Feet on the Earth

2019 ◽  
Author(s):  
Adib Rifqi Setiawan
Keyword(s):  
Standard Model ◽  
Particle Physics ◽  
Space Time ◽  
Additional Dimension ◽  
The Earth ◽  
The Standard Model ◽  
The Universe

Put simply, Lisa Randall’s job is to figure out how the universe works, and what it’s made of. Her contributions to theoretical particle physics include two models of space-time that bear her name. The first Randall–Sundrum model addressed a problem with the Standard Model of the universe, and the second concerned the possibility of a warped additional dimension of space. In this work, we caught up with Randall to talk about why she chose a career in physics, where she finds inspiration, and what advice she’d offer budding physicists. This article has been edited for clarity. My favourite quote in this interview is, “Figure out what you enjoy, what your talents are, and what you’re most curious to learn about.” If you insterest in her work, you can contact her on Twitter @lirarandall.

An Interview with the Physicist that Her Head in the Universe and Both Feet on the Earth

2019 ◽  
Author(s):  
Adib Rifqi Setiawan
Keyword(s):  
Standard Model ◽  
Particle Physics ◽  
Space Time ◽  
Additional Dimension ◽  
The Earth ◽  
The Standard Model ◽  
The Universe

Put simply, Lisa Randall’s job is to figure out how the universe works, and what it’s made of. Her contributions to theoretical particle physics include two models of space-time that bear her name. The first Randall–Sundrum model addressed a problem with the Standard Model of the universe, and the second concerned the possibility of a warped additional dimension of space. In this work, we caught up with Randall to talk about why she chose a career in physics, where she finds inspiration, and what advice she’d offer budding physicists. This article has been edited for clarity. My favourite quote in this interview is, “Figure out what you enjoy, what your talents are, and what you’re most curious to learn about.” If you insterest in her work, you can contact her on Twitter @lirarandall.

Enhanced Attribute-Based Authenticated Key Agreement Protocol in the Standard Model

2014 ◽  
Vol 36 (10) ◽  
pp. 2156-2167
Author(s):  
Qiang LI ◽  
Deng-Guo FENG ◽  
Li-Wu ZHANG ◽  
Zhi-Gang GAO
Keyword(s):  
Standard Model ◽  
Key Agreement ◽  
Authenticated Key Agreement ◽  
Key Agreement Protocol ◽  
The Standard Model
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