Important Subject Of Interest Research Articles

Clinical and practical aspects of the gingival smile. A questionnaire-based survey.

Abstract Introduction: One of the main elements of facial esthetics is represented by the smile. A harmonious proportion between the elements of facial esthetics is an important subject of interest in dentistry. Aim of the study: This research aims to evaluate the impact of the gummy smile on future dental practitioners. Materials and Methods: A survey containing 16 questions was designed to find out the students’ perceptions about the ideal smile and if the gingival smile is considered youthful or unpleasing. The impact on their self-esteem, their willingness to change the gummy smile or not, the nonsurgical and surgical methods of treatment were also evaluated. Results: 212 answers were recorded and analyzed. Nearly three quarters (70.3%) of the respondents believe that having a gummy smile is unesthetic, while only 29.3% considered it to be a sign of youth. Self-esteem can be affected by having a gingival smile, but, according to the results, most of the students (45.8%) said that their daily lives have not been affected by it, 40.6% said that in a small amount, 10.4% said that their self-assurance has been very affected and only 3.3% admitted that the gummy smile distressed their confidence. When asked if they were willing to correct their gingival smile, 51.4% were open to improving it while 48.6% would not change it. Conclusions: Among dentistry students, excessive showing of the gums is believed to be unesthetic rather than a sign of youthfulness. The respondents are generally not affected in their daily life by having a gummy smile. Education regarding the methods of correcting it still needs to be addressed amongst future dental practitioners.

Atomically Thin Semiconductor TiPtGe and Heterostructure of β-Antimonene/TiPtGe: A First-Principles Study

Half-Heusler intermetallic compounds have been an important subject of interest in the field of semiconductors for years, but have been studied more for their bulk structure and rarely for their two-dimensional structure. Here, a novel two-dimensional semiconductor material with the chemical formula TiPtGe and an indirect bandgap of 1.27 eV has been developed on the basis of first-principles calculations. Significantly, it could be transformed from an indirect to a direct bandgap semiconductor under small biaxial in-plane strain. Given the similar lattice parameters and symmetry with the single-element two-dimensional material antimonene, we have attempted to form a vertical heterostructure of the two. The calculated results show that the heterostructure can be transformed from an indirect to a direct bandgap by increasing the number of TiPtGe layers. Further calculated results of the optical properties show that increasing the number of TiPtGe layers in the heterostructure could significantly improve the absorption efficiency in the visible region. This provides a new possibility for the application of antimonene in optoelectronic devices.

Organizational culture in social services – focused on the workers’ well-being

Objectives: In the field of social services, the organizational culture today is defined mainly through professional values, for individual social service providers by vision, mission, goal, or organizational values. In the context of increasing the quality of services and culture supporting the clients’ wellbeing, the workers’ well-being is an important subject of interest. The aim of the research is to find out the current state of the documents defining the organizational culture of social services. Materials and Methods: Review and theoretical analysis of the literature on the topic. Qualitative content analysis of documents. Documents defining the organizational culture of social service providers in Slovakia were analysed. The documents on the provider’s web page encompassing vision, mission, goals, and values were found. Results: From the documents, it was found out that support to employees is still neglected. At the practical level, the support to employees was expressed as the support of education, supervision of employees, a social fund for cultural or sports activities, rewarding of employees. Employee s’ satisfaction or a committed approach towards employees were expressed rarely. Conclusions: The provision of social services today faces many demands and dilemmas that “social work services„ bring with them. Incorporating support for employee’s well-being into the organizational culture of social services can be an essential step towards better client care and higher quality services.

Estimation of directional crack density and fluid properties from well logs in vertical wells

The study of elastic properties of fractured/cracked rocks has been an important subject of interest in seismology and geophysical exploration. Downhole logging provides a direct measurement of fractured rock properties in terms of elastic wave velocities and anisotropy. Most existing studies only provide qualitative descriptions of fracture properties as evidenced from the acquired measurements. To better use downhole measurements, we have derived a comprehensive theoretical analysis and developed an inversion technique to characterize fracture properties. Theoretical results for cracked rocks show that crack density, crack alignment direction, and crack filling materials are the three main fracture parameters that strongly affect the elastic wave properties of fractured rocks. Furthermore, a detailed analysis of the crack effects on elastic properties shows that the measured elastic moduli can be used to evaluate the crack parameters of cracked rocks. We assume that cracks with any orientational distribution can be divided into two parts: horizontal and vertical. Based on the theoretical analysis, we develop an inversion method to estimate fracture parameters from well logs acquired in a vertical borehole. We assume a rock-physics model for rocks that adds effective horizontal and vertical cracks that are filled with liquid in an isotropic background, the elastic and fluid properties of which are inverted from the measured logs. The inversion method enables the quantification of the directional crack density and crack-filling material when applied to field logging measurements acquired in fractured formations. Theoretically predicted fracture properties are validated with formation microresistivity scan logging data and are consistent with the interpretation results.

USE AN OPEN SOURCE CHANGE MATTERS SITE TO MEASURE THE VEGETATION INDEX IN THE WESTERN PLATEAU OF ANBAR IN IRAQ

As a result of the development of geo-technologies, in recent years, software has emerged that has provided the possibility of deriving information. The most important of these are geographic information systems (GIS), which are many sources in satellite data from multi-spectral satellites, The source via the Internet is one of the most important modern means of providing large data that varied between maps and satellite images (LANDSAT-SPOT-NASA). The study of land cover changes is one of the most important subjects of interest to the sciences and in particular the geographical research related to the environment and its effects on humans and living organisms. In the current research, the data of interactive open source maps were adopted, which provided the possibility of analysis. Using the Change Matters esri, it is one of the most efficient locations for detection of land cover changes by dealing with visuals for different periods of time. The study also reviewed some of the open source websites dealing with GIS to indicate their importance and role in the analysis and production of maps. The research aims to employ open-source digital technologies via the web to extract information about land cover changes.

The Chemistry and Applications of the Quinoxaline Compounds

The quinoxaline derivatives are beneficial compounds because of their various medicinal and industrial applications. They are well-known for application in organic light emitting devices, polymers and pharmaceutical agents. The quinoxaline-containing polymers are applicable in optical devices due to their thermal stability and low band gap. There are many reported procedures for the synthesis of bis- and polyquinoxalines and quinoxaline-containing macrocycles. The quinoxaline-based compounds as fascinating structures are important subjects of interest in either basic or applied sciences. This review summarizes the latest progresses related to the quinoxalines, quinoxaline-containing macrocycles, and bis- and poly quinoxalines, including the synthesis, functionalization and modification methods and applications of these compounds.

Mathematical and numerical analysis of the dynamical behavior of chen oscillator

Over the years, chaos has been an important subject of interest to many researchers. Many chaotic oscillators have been proposed in literature. The oscillating and the possible stability in chaotic systems could be applied as fundamental tools in developing real world applications in several disciplines such as engineering, telecommunication, medicine, etc. In this work, the Chen oscillator dynamic and stability behavior are studied by applying mathematical and numerical analyses to investigate the equilibria, eigenvalues, Lyapunov exponents and bifurcation diagrams. The eigenvalues obtained show that the Chen oscillator is unstable at the equilibrium points examined while the maximum Lyapunov exponent obtained confirms its chaotic nature. Also, the bifurcation diagrams show the stability of the Chen system with the three system parameters. The results show that bifurcation with parameter b gives the longest period of stability.

Nierówna praca - wybrane aspekty aktywności zawodowej kobiet na przykładzie województwa pomorskiego

The issue of economic activity of women is an important subject of interest of EU and national institutions, mainly due to the lack of symmetry between men and women in terms of employment, remuneration and access to managerial positions. The constant presence of these differences, despite the existing legal regulations, is treated as an element of economic discrimination against women. In the study of economic discrimination of women the analysis also includes the division of work among family members, the impact of the decision about having children on the continuation of the professional career, and the provision of a sufficient number of day care centers for children and dependents. This paper presents basic policy regulations against unequal treatment in economic life and then illustrates selected areas of economic activity of women in the Pomeranian voivodeship. The carried out analysis allows to draw the following conclusions: • There are differences in remuneration, which in the long run affects social security, pension rights and the risk of poverty among women. • Women are overrepresented in the area of part-time employment. • The unequal division of caring duties and housework between women and men has an impact on the career of women. • Women are underrepresented in high paid jobs and decision-making positions.

Progress of studies in China from July 2010 to May 2015 on the influence of the Kuroshio on neighboring Chinese seas and the Ryukyu Current

The influence of the Kuroshio on neighboring Chinese seas and the Ryukyu Current is a very important subject of interest in physical oceanography. To deeply explain the research progress made by Chinese scientists from July 2010 to May 2015, the following three aspects are reviewed in this paper. The first concerns the Kuroshio intrusion into the South China Sea (SCS) and its circulation around the Luzon Strait. There are two very important points to be explained: the seasonal and inter-annual variation of the Kuroshio intrusion and the mechanisms of the Kuroshio intrusion and the influence of the Kuroshio on currents in the Luzon Strait and circulation in the northern SCS. The second concerns the variability of the Kuroshio and its interaction with the East China Sea (ECS). There are following four interesting topics to be explained: an overview of studies on the Kuroshio in the ECS; the Kuroshio intrusion into the ECS, water exchange, and dynamic impacts; the downstream increase of nutrient transport by the Kuroshio; and the application of satellite remote sensing on terrestrial material transport by the Kuroshio intrusion into the ECS. Third, the interaction between the Ryukyu Current and Kuroshio in the ECS are also discussed. Finally, the main results are summarized and areas of further study are simply discussed.

Una propuesta de modelamiento para los Sistemas de Recompensa

En todos los tiempos uno de los temas de mayor interés a todos los niveles de la actividad humana es el referente a las percepciones salariales que se tienen. Incluso se podría decir que la decisión de seguir ciertos estudios ha dependido en gran manera sobre las perspectivas que el individuo tiene sobre el futuro de sus ingresos, por lo que en este trabajo se propone un modelo general para su cálculo. Se plantea el sistema de recompensa de un empleado como una función que depende de par´ametros tanto monetarios como no monetarios, por lo que se puede plantear el sistema de recompensa como un sistema multiobjetivo a optimizar. En el trabajo se presenta una justificación del sistema de recompensa propuesto como un modelo general de solución a éste y se presentan algunos ejemplos.