Comparison of Labor Laws in China, Russia, and the US

Author: Richard A. Posthuma

ABSTRACT
This article compares labor laws in China, Russia, and the US. It demonstrates how mimetic isomorphic tendencies and general principles of fairness such as equality, equity, and need may have resulted in similarities in the labor laws across all 3 countries. However, it is also shown that unique cultural, social, and historical factors have created significant differences in these labor laws. Understanding these differences will inform policy makers and business leaders.

Source:

Journal: Beijing Law Review
DOI: 10.4236/blr.2020.111009

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Paper Id: 98174 (metadata)

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Preliminaries for a New Mathematical Framework for Modelling Tumour Growth Using Stress State Decomposition Technique

Authors: Hector Ariel DiRado, Pablo Alejandro Beneyto, Javier Luis Mroginski

ABSTRACT
The main goal of the present paper is to present a mathematical framework for modelling tumour growth based on stress state decomposition technique (SSDT). This is a straightforward extension of the model for multi-phase nonsaturated soil consolidation with pollutant transport presented by the authors and may be regarded as an alternative to classical frameworks based on TCAT theory. In this preliminary work, the Representative Volume Element (RVE) for tumour is proposed along with its comparison with the corresponding one for soils modelling developed formerly by the authors. Equations standing for tumour phase are flawlessly brought into correspondence with those of gaseous phase in the soil problem showing that a similar task may be carried out for the remainders phases taking part in both RVEs. Furthermore, stresses induced by nonlinear saturation and permeability dependence on suction for soil interstitial fluids transport finds its counterpart on the contact between the cancer cell membrane and interstitial fluids rendering a higher primary variables coupling degree than what was attained in TCAT theory. From these preliminaries assessments, it may be put forward that likewise the stress state decomposition procedure stands for an alternative for modelling multi-phase nonsaturated soil consolidation with pollutant transport; it does for modelling cancer as well.

Source:

Journal: Journal of Biosciences and Medicines
DOI: 10.4236/jbm.2020.82006

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Paper Id: 98166 (metadata)

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Natural Extension of the Schrödinger Equation to Quasi-Relativistic Speeds

Author: Luis Grave de Peralta

ABSTRACT
A Schrödinger-like equation for a single free quantum particle is presented. It is argued that this equation can be considered a natural relativistic extension of the Schrödinger equation for energies smaller than the energy associated to the particle’s mass. Some basic properties of this equation: Galilean invariance, probability density, and relation to the Klein-Gordon equation are discussed. The scholastic value of the proposed Grave de Peralta equation is illustrated by finding precise quasi-relativistic solutions for the infinite rectangular well and the quantum rotor problems. Consequences of the non-linearity of the proposed equation for the quantum superposition principle are discussed.

Source:

Journal: Journal of Modern Physics
DOI: 10.4236/jmp.2020.112012 (PDF)
Paper Id: 98147 (metadata)

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A Critical Analysis of Gold Prospecting Methods

Authors: Barry Mamadou Saliou, Xinwu Huang

ABSTRACT
Exploration and prospecting for mineral resources deposits are perceived to not be an easy process due to big deposits being discovered in early times. Numerous gold prospecting methods have been used in gold prospecting. The aim of this research is to critically analyze both traditional and modern gold prospecting methods that are being used in gold exploration. The research objective is to critically evaluate the numerous studies that focus on gold prospecting methods in an effort to provide an effective analysis of gold prospecting methods. In doing so, the study has used a qualitative method to review the existing literature. The study reviews academic journals and articles, books, and periodicals which were published between 2010 and 2019. This study has achieved to critically analyze both traditional and modern gold prospecting methods. The study finds out that the traditional gold prospecting methods include gold panning and dry washing. Additionally, the current gold prospecting methods include biological prospecting, geochemical prospecting and geophysical prospecting methods.

Source:

Journal: International Journal of Geosciences
DOI: 10.4236/ijg.2020.112002 (PDF)
Paper Id: 98143 (metadata)

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Electrical Properties of Newly Calcified Tissues on the Surface of Silver Ion Administrated Hydroxyapatite Scaffolds

Authors: Manjushree M. Bahir, Rajendra S. Khairnar, Megha P. Mahabole

ABSTRACT
The application of electric field to graft materials has significant contribution in bone healing mechanism. Hence, the aim of this study is to develop conductive hydroxyapatite (HAp) scaffolds by introducing different concentrations of silver ion into its structure and demonstrate its impact on in vitro bioactivity and electrical properties. Hydroxyapatite was synthesized by wet chemical method and calcium ions from HAp structure have been partially replaced by silver ions. The HAp and Ag-HAp nanocomposites were characterized by Fourier-transform infrared, Raman spectroscopy, XRD and EDAX for functional group and phase formation analysis as well as to confirm existence of silver ions in HAp structure respectively. Bioactivity of these scaffolds was assessed by using simulated body fluid. The surface morphology, structural analysis and electrical properties of scaffolds before and after formation of newly calcified tissues on its surface were examined via scanning electron microscopy (SEM), XRD, FTIR, dielectric and impedance spectroscopy techniques. Overall, our finding suggests that the administration of silver ions in HAp scaffold boosts bioactivity and has strong correlation with electrical properties.

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Journal: Journal of Biomaterials and Nanobiotechnology
DOI: 10.4236/jbnb.2020.112006 (PDF)
Paper Id: 98126 (metadata)

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Analysis of the Relationship between the Number of Traffic Accidents and the Traffic Flow & Section Location in Extra Long Tunnel

Authors: Zhaoyou Ma, Shouen Fang, Shuo Liu, Bowen Cai

ABSTRACT
In order to study the influence of the traffic characteristics on traffic accidents in extra long tunnel, the main measurement indicators of traffic flow during the time of traffic accidents are matched with the accident information to form a data set of the number of traffic accidents and the hourly traffic flow of the accident. Vehicle ratio and the number of accidents are mainly used as the characteristic indicators of traffic flow. At the same time, the longitudinal distribution law of the average speed of traffic flow and the number of traffic accidents in the extra long tunnel is studied. Based on the superposition principle, the extra long tunnel is divided into 5 traffic safety zones. This paper analyzes the distribution of time, morphology, cause of accident, and other characteristics in different traffic safety zones, finding that the shape of traffic accidents in extra long tunnel is mainly rear-end collisions. Improper operation and illegal lane changes are the main causes of accidents.

Source:

Journal: Engineering
DOI: 10.4236/eng.2020.122007 (PDF)
Paper Id: 98117 (metadata)

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Metformin Induced Lactic Acidosis What Is the Effective Treatment?

Authors: Manal Alotaibi, Farhan Ali, Sharon Leung, Rebecca Kent

ABSTRACT
Metformin is known to be an effective treatment for patients with type 2 diabetes mellitus. Metformin induced lactic acidosis (MALA) is a serious illness which should identify and treat urgently. In this review article, we will present our own data and review the literature to highlight the importance of recognizing MALA; causes, presentations and the proper treatment, even though there are few published studies discussing MALA treatment modalities. The two cases that we presented here were patients admitted to the ICU and undergoing hemodynamic instability, which improved after removal of Metformin and clearance of associated lactic acidosis with SLED and CVVH. A case could be made for SLED and CVVH as modalities of choice for patients with MALA and hemodynamic instability, but further research is needed in this direction.

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Journal: Open Journal of Nephrology
DOI: 10.4236/ojneph.2020.101002 (PDF)
Paper Id: 98108 (metadata)

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The Five Essential Reasons for the Failure of School Reforms

Author: Joseph Murphy

ABSTRACT
We unearth and examine the most critical reasons for the failure of school reforms in the United States over the last century. More especially, we look beyond and below traditional explanations provided by the ministries of school reform since the ESEA in 1965. We call into question the most ascendant and most universal beliefs about improvement that are in play at given periods of school reform (e.g., “scientific evidence” currently). We also observe that when knowledge transforms into understanding, it still lacks the power to explain the failure of school reform efforts.

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Journal: Journal of Human Resource and Sustainability Studies
DOI: 10.4236/jhrss.2020.81001(PDF)
Paper Id: 98076 (metadata)

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Solution to Polynomial Equations, a New Approach

Author: Fleur T. Tehrani

ABSTRACT
A new approach for solving polynomial equations is presented in this study. Two techniques for solving quartic equations are described that are based on a new method which was recently developed for solving cubic equations. Higher order polynomial equations are solved by using a new and efficient algorithmic technique. The proposed methods rely on initially identifying the vicinities of the roots and do not require the use of complicated formulas, roots of complex numbers, or application of graphs. It is proposed that under the stated conditions, the methods presented provide efficient techniques to find the roots of polynomial equations.

Source:

Journal: Applied Mathematics
DOI: 10.4236/am.2020.112006(PDF)
Paper Id: 98044 (metadata)

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Piezometric Behavior in the Amazonian Lateritic Plateaus: Implications of Climate Changes to the Recharge of the Alter do Chão Aquifer System

Authors: Júlio Henrichs de Azevedo, José Eloi Guimarães Campos, André Walczuk Gomes

ABSTRACT
Potentiometric and pluviometric datasets were evaluated to understand the behavior of aquifer recharge in the bauxite plateaus in the Porto Trombetas region, Pará, Northern Brazil. The datasets are originated from three monitoring wells and an automatic climatological station. The local groundwater is related to the Alter do Chao Aquifer System, which despite being unconfined in valley regions, is semiconfined in the plateaus areas. The aquifer recharge occurs by direct infiltration and by leakage from the aquitard in the unconfined and semiconfined portions, respectively. Precipitation declined by 27% between 2002 and 2017. The rains accumulated between February and April are the most important for the recharge processes since this period is marked by higher absolute precipitation (up to 300 mm/month) and less deviation from the historical pattern. The recharge measured by the annual fluctuation of the water table also declined significantly in the 2010-2016 period. Statistical analysis demonstrates that in the case of a permanent climate change, expressed by rainfall reducing, the aquifer recharge would diminish at a non-linear rate, which is also expected for the base flow rates. In addition, data evaluation reveals that deforestation intensely decreases the recharge rates, as observed in the Aviso Plateau mining site. The results demonstrate that the water table fluctuations must be considered when modeling Global Climate Changes since the maintenance of surface flow rates (springs, lakes and streams) depends on aquifers baseflow. The result of the statistical analysis can be also applied to regions where climate patterns are strong seasonal, as the Savannah of Central Brazil.

Source:

Journal: Journal of Water Resource and Protection
DOI: 10.4236/jwarp.2020.122007(PDF)
Paper Id: 97993 (metadata)

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