Resolution in the Case of the Hydrogen Atom of an Improved Dirac Equation

Authors: Claude Daviau, Jacques Bertrand, Raymond Albert Ng

ABSTRACT
The improved Dirac equation is completely solved in the case of the hydrogen atom. A method of separation of variables in spherical coordinates is used. The angular functions are the same as with the linear Dirac equation: they account for the spin 1/2 of the electron. The existence of a probability density governs the radial equations. This gives all the quantum numbers required by spectroscopy, the true number of energy levels and the true levels obtained by Sommerfeld’s formula.

Source:

Journal: Journal of Modern Physics
DOI: 10.4236/jmp.2020.117068(PDF)
Paper Id: 101589 (metadata)

See also: Comments to Paper

Posted in JMP | Leave a comment

Software Effort Prediction Using Ensemble Learning Methods

Authors: Omar H. Alhazmi, Mohammed Zubair Khan

ABSTRACT
Software Cost Estimation (SCE) is an essential requirement in producing software these days. Genuine accurate estimation requires cost-and-efforts factors in delivering software by utilizing algorithmic or Ensemble Learning Methods (ELMs). Effort is estimated in terms of individual months and length. Overestimation as well as underestimation of efforts can adversely affect software development. Hence, it is the responsibility of software development managers to estimate the cost using the best possible techniques. The predominant cost for any product is the expense of figuring effort. Subsequently, effort estimation is exceptionally pivotal and there is a constant need to improve its accuracy. Fortunately, several efforts estimation models are available; however, it is difficult to determine which model is more accurate on what dataset. Hence, we use ensemble learning bagging with base learner Linear regression, SMOReg, MLP, random forest, REPTree, and M5Rule. We also implemented the feature selection algorithm to examine the effect of feature selection algorithm BestFit and Genetic Algorithm. The dataset is based on 499 projects known as China. The results show that the Mean Magnitude Relative error of Bagging M5 rule with Genetic Algorithm as Feature Selection is 10%, which makes it better than other algorithms.

Source:

Journal: Journal of Software Engineering and Applications
DOI: 10.4236/jsea.2020.137010(PDF)
Paper Id: 101539 (metadata)

See also: Comments to Paper

Posted in JSEA | Leave a comment

The Influence of Environmental Stimuli upon the Human Body in Summer

Authors: Yoshihito Kurazumi, Emi Kondo, Kenta Fukagawa

ABSTRACT
Green building practices benefit many users because it imposes less of a burden both on people and the environment and plays a central role in achieving a sustainable lifestyle. Covering rooftops with tall evergreen trees increases evaporation and reduces energy consumption by heating and air conditioning systems. Japan has a cereal-crop culinary culture and rice cultivation is a primary activity. According to the Biophilia Hypothesis exposure to a lush greenery environment conducive to survival facilitates more effective relaxation and recovery from fatigue than simple elimination of stress. The impact of rice paddies is not only about reduction of energy consumption, but also about mitigating the urban environment and its physiological and psychological effects on the human body. Focusing on the spread of the rice canopy and exposure of water surfaces, clarified the reaction of the human body to thermal sensory perception and outdoor thermal environments, and the correlation between them. Rice fields where the rice canopy was smaller, and where ample standing water surfaces received short wavelength solar radiation, have a high heat capacity, which works to increase the longwave length thermal radiation in the time period when the accumulated amount of short wavelength solar radiation increases. Meanwhile, where the spread of the rice canopy was greater, and the surface of the standing irrigation water covered with rice plants, a mitigation effect on the outdoor thermal environment evaluation index of ETFe (enhanced conduction-corrected modified effective temperature) through reduction of long wavelength thermal radiation came into play, and it became clear that thermal sensory perception improved through visual stimuli that engendered images of humidity. The purpose of this study was to clarify the environmental mitigation effect of rice fields in an urban environment. In addition to the physical environmental mitigation effect, it was also shown that rice fields engendered a psychological environmental mitigation effect through visual stimuli in the form of natural ground surfaces such as green spaces.

Source:

Journal: Health
DOI: 10.4236/health.2020.127057(PDF)
Paper Id: 101524 (metadata)

See also: Comments to Paper

Posted in Health | Leave a comment

Effects of Fairness and Relationship Quality on Relational Behavior

Author: Zafer Kamil Berkman

ABSTRACT
To be an effective global competitor requires to be a trusted cooperator in some network. This argument defines the essence of marketing channel partnerships. Relational behaviors have a conclusive effect in the success of marketing initiatives; hence, they are amongst the variables that set apart a good partnership. How do fairness and relationship quality affect relational behaviors? This study aims to answer these questions for a channel setting that comprises the marketing firm and the retailers. Research data were gathered from four hundred Tekel shops, Turkish tobacco and liquor convenience shops by using face to face interviewing technique. Prior research mostly studied the effects of fairness on relational behaviors and on relationship quality dimensions. This study aims to explore the mediating role of relationship quality. Scales were developed from the existing literature, adopted for the research context, and tested for reliability and validity. Structural equation modeling was used to test the research data. The study establishes the mediating role of the relationship quality for the effect of fairness on relational behaviors.

Source:

Journal: American Journal of Industrial and Business Management
DOI: 10.4236/ajibm.2020.107079(PDF)
Paper Id: 101490 (metadata)

See also: Comments to Paper

Posted in AJIBM | Leave a comment

The Study of Spatial Distribution of Land Use in the Yellow River Delta in China

Authors: Li Fan, Yusheng Gong, Ting Duan, Jiayu Wang

ABSTRACT
In this paper, Land at 8 OLI image data from 2013 to 2017 was interpreted by visual interpretation combined with supervised classification to extract the information of land use distribution in the Yellow River Delta in China. The characteristics of Land Use Cover Change (LUCC) in the past five years which were analyzed by land use spatial analysis method based on buffer zone were discussed to obtain the land use index trend of five land types in buffer zones at different distance. The land use transfer maps of 2013 and 2017 were made by using the geo-information mapping method. The spatial-temporal change rules and the development process of land use in the Yellow River Delta during the past five years were analyzed. According to the analysis results, the comprehensive index of land use degree in the study area was in the middle level. The land use transfer maps were mainly consisted of farmland and grassland. The change rate of bare land to vegetation was 20.21% and that of vegetation to bare land was 14.15%. This study can provide effective basis for the scientific management of land and rational guidance for planning in this area.

Source:

Journal: Journal of Geographic Information System
DOI: 10.4236/jgis.2020.124017(PDF)
Paper Id: 101468 (metadata)

See also: Comments to Paper

Posted in JGIS | Leave a comment

Two-Dimensional Topology Optimization of a Horn Antenna

Author: Huaxu Dan

ABSTRACT
A two-dimensional horn antenna is used as a model for topology optimization. In order to employ the topology optimization, each point in the domain is controlled by a function which is allowed to take values between 0 and 1. Each point’s distinct value then gives it an effective permittivity, either close to that of polyimide or that of air, two materials considered in this study. With these settings, the optimization problem becomes finding the optimal distribution of materials in a given domain, and is solved under constraints of reflection and material usage by the Method of Moving Asymptotes. The final configuration consists of two concentric arcs of air while polyimide takes up the rest of the domain, a result relatively unsensitive to the choice of constraints and initial values. Compared to the unoptimized antenna, a slimmer main lobe is observed and the gain boosts.

Source:

Journal: Open Journal of Optimization
DOI: 10.4236/ojop.2020.93004

(PDF)
Paper Id: 101428 (metadata)

See also: Comments to Paper

Posted in Uncategorized | 1 Comment

A Review of the Current Status of Bamboo Usage with Special Emphasis on Orthopedic Rehabilitation

Authors: Aruoture Egoh, Kischa S. Reed, Peter N. Kalu

ABSTRACT
It was found that bamboo has been extensively used as infrastructure material in Asia and Africa due to its exceptional properties. Its usage has ranged from simple fence construction to bridges. Bamboo, as a biodegradable and renewable material, has been used for construction purposes. Both the natural and engineered form of the Bamboo has become a center of focus for most research scientists, materials experts and most important research and development aspects of Industries. The physical and mechanical properties of Bamboo culm in its dry and green state have shown promising prospects and this has further established the need to put together a regulatory body that will help to monitor and create standards for testing and utilizing Bamboo. This paper considered the various applications of Bamboo culm both in the past and present. An area the authors considered in this paper is the use of Bamboo in orthopedics. The number of people with gait dysfunction is fast growing due to population growth, war, ageing and accidents. The cost of orthopedic devices essential to restore function and improve quality of life is not affordable for many. Earlier research in this area suggests that bamboo is a suitable material for orthopedic appliances, especially exoskeleton. Bamboo use in applications such as orthopedic rehabilitation is common in developing countries where traditional bonesetters (TBS) use splints to treat fracture. In spite of the innovative discovery made by researchers in the use of Bamboo, standardization is a major challenge especially in orthopedic application. The focus of our work revealed varieties of Bamboo application.

Source:

Journal: Materials Sciences and Applications
DOI: 10.4236/msa.2020.117028(PDF)
Paper Id: 101409 (metadata)

See also: Comments to Paper

Posted in MSA | Leave a comment

(De)Stigmatization of Political Leadership: The Case of a Right-Wing Populist Presidential Candidate in the Finnish Media

Authors: Marke Kivijärvi, Tuomo Takala

ABSTRACT
In this article, we examine the discursive practices of (de)stigmatizing right-wing populist party leaders. We draw on a recent example from Finland by examining how the female presidential candidate of a right-wing populist party was portrayed in the Finnish media during the 2018 presidential campaign season. We examine the stigmatization by the press media and the stigma-management tactics used by the presidential candidate to resist stigmatization. The media representation of the right-wing party leader is highly tensioned, and the media positions her political leadership within the duality of charisma and stigma. In our analysis, we extend earlier literature by unveiling the emotional tensions inherent in portraying and (de)stigmatizing populist political leadership. The results highlight how religion, radical nationalism, and inappropriate expression of emotions are intertwined as the main sources for attributing stigma. In this case, the stigmatization of the leader occurs via threatening and ridiculing imagery and erosion of the leader’s authority. Resistance to stigma occurs through distancing, emotional and moral argumentation, and attribution of strong leadership.

Source:

Journal: Open Journal of Political Science
DOI: 10.4236/ojps.2020.103026(PDF)
Paper Id: 101376 (metadata)

See also: Comments to Paper

Posted in OJPS | Leave a comment

Representable Model of a Finished and Unlimited 3D Cosmos

Author: Marc Mignonat

ABSTRACT
A model of a 3D unlimited and finished space is presented with the philosophic prejudgement that a physical space must be representable and cannot be a virtual mathematical abstraction. This representable 3D space has 3 radii of curvature and so, is multiconnected as predicted by the theorem of perelman-Poincaré. This model respects the basic principles of the physics (Occam, Maupertuis, Mach, …) and does not question much of the content of the other models. Another way of seeing is given because: 1) this model avoids the problem of the 2 infinities; 2) it gives an additional explanation to the expansion and to the value of the density always near the critical density; the homogeneity of the cosmos is easier to explain; 3) the attraction is always attractive and it gives an explanation to the measure of the acceleration of the expansion estimated about 6 – 7 billion years and to the great attractor; 4) it predicts the existence of many “ghosts” images, as the illusion of galaxies is older than Big Bang and these galaxies are more evolved when they are older, or for example a greater number of galaxies at a distance of about 2100 Mpc, what can be verified from the NASA/IPAC measurements of 348 galaxies of redshift v > 1/8c. Other deductions are verifiable, which should invalidate or confirm this model. In Appendix, a mathematical development deliberately simple is made to remain in a representable reality and locate any point in this space. This development can allow to make links with the spaces of Minkowski.

Source:

Journal: Journal of Modern Physics
DOI: 10.4236/jmp.2020.117061(PDF)
Paper Id: 101341 (metadata)

See also: Comments to Paper

Posted in JMP | Leave a comment

STAT1 and STAT2 Null Cells Are Resistant to RNA-Induced Apoptosis Due to Deficiency in Constitutive and Inducible Apoptosis-Regulating Genes

Authors: Farag Bleiblo, Paul Michael, Chilakamarti V. Ramana, T. C. Tai,
Joseph E. Parrillo, Anand Kumar, Aseem Kumar

ABSTRACT
Although much progress has been made in identifying the signaling pathways that mediate viral RNA-induced apoptosis and activation of interferon-stimulated genes, the role that bacterial RNA plays in regulating these responses has remained undetermined. Herein, we identified bacterial RNA as a novel inducer of the apoptotic cell death. Unlike the parental cells, STAT1 and STAT2 mutants display apoptotic defects which were reversed by restoring the expression of wild type proteins. While STAT1 mutants lacking tyrosine-701 or a functional SH2 domain were effective as the wild-type protein in restoring the apoptotic response, the mutant carrying a point mutation at serine-727 of STAT1 was resistant to bacterial RNA-induced apoptosis. We also determined that the lack of apoptosis in the STAT1 and STAT2 mutants was correlated with the constitutive and inducible activation of apoptosis regulating proteins. Furthermore, we show that bacterial RNA induces transcriptional activation of STAT1, STAT2, IRF1, and ISGF3, which was impaired in STAT1 or STAT2 mutants. These observations suggested that the participation of STATs in regulating the apoptotic response is independent of their downstream functions as cytokine-induced transcriptional activators. In addition to bacterial immunity, the results presented here may also have implications in cellular pathophysiology and RNA-based therapy.

Source:

Journal: American Journal of Molecular Biology
DOI: 10.4236/ajmb.2020.103012(PDF)
Paper Id: 101328 (metadata)

See also: Comments to Paper

Posted in AJMB | Leave a comment