Sustainable Environment and in the Context of Environment Economy Necessary and an Analyze

In global world, the environment has become a scarce resource. Since economics is about how to deal with scarce resources, environment and economics are interrelated with each other. On the other hand it is also clear that economics which creates both positive and negative externalities, affects the environment. For this reason, it is not possible to except environmental problems from the economics. Today some socio-economic activities like increasing consumption based on shopping malls, urban regeneration, fast population growth and etc. have being created environmental cost. One way of using economics is to ensure that the costs and the benefits of environmental measures are well balanced. Although it is difficult to estimate costs and benefits, there is an increasing demand that this is should be done before the economical activity. Economic and environmental objectives are often perceived as being contradictory. It is believed that a choice must be made between one and the other and that cannot be achieved concurrently. To change this perception, some measures should be taken on both national and international level.  At this point, an efficient environmental auditing is being important day by day to ensure environmental economics. In this study we will research what was done in the world in terms of environmental economics. In this context, we will examine what will have to do in Turkey in terms of legislation

Expansion for Who, Markets or the Poor?

Abstract: In this study we examine the impacts of monetary expansion policies executed by the Federal Reserve on poverty in the United States of America. It has been discussed in various studies that the Fed’s expansionary monetary policies create a less positive impact on economy as a whole than financial sector. In this study, the expansionary effects of policies on the poor living in America will be discussed. The main thesis of the study is that the poor living in the United States benefited less from expansionary monetary policies than either financial sector or the US economy as a whole. When discussing the thesis of the study both employed and unemployed poor will be discussed. Therefore, it will be questioned that the decrease in the unemployment rate is the indicator of the fight against poverty. Indicators such as indices and interest rates in the financial markets, and indicators such as growth rates and unemployment rates in the non-financial markets are regarded as essential indicators but as for poverty it’s hard to find such regarded indicators. Unfortunately, there are not too many statistics about the poor living in the United States in the reports of the international organizations. Thus the main trouble of the study is that international comparisons are almost impossible. Therefore, various indicators produced by the U.S. government agencies of various indicators will be used in this study

Expansion for Who, Markets or The Poor?

In this study we examine the impacts of expansionary monetary policies executed by the Federal Reserve on poverty in the United States of America. It has been discussed in various studies that the Fed’s expansionary monetary policies create a less positive impact on economy as a whole than financial sector. In this study, the expansionary effects of expansionary policies on the poor living in America will be discussed. The main thesis of the study is that the poor living in the United States benefited less from expansionary monetary policies than either financial sector or the US economy as a whole. When discussing the thesis of the study both employed and unemployed poor will be discussed. Therefore, it will be questioned that the decrease in the unemployment rate is the indicator of the fight against poverty.Indicators such as indices and interest rates in the financial markets, and indicators such as growth rates and unemployment rates in the overall economy are regarded as essential indicators but as for poverty it’s hard to find such regarded indicators. Unfortunately, there are not too many statistics about the poor living in the United States in the reports of the international organizations. Thus the main trouble of the study is that international comparisons are almost impossible. Therefore, various indicators produced by the U.S. government agencies of various indicators will be used in this study

Mathematical knowledge and skills expected by higher education in engineering and the social sciences: Implications for high school mathematics curriculum

Cataloged from PDF version of article.One important function of school mathematics curriculum is to prepare high school students with the knowledge and skills needed for university education. Identifying them empirically will help making sound decisions about the contents of high school mathematics curriculum. It will also help students to make informed choices in course selection at high school. In this study, we surveyed university faculty members who teach first year university students about the mathematical knowledge and skills that they would like to see in incoming high school graduates. Data were collected from 122 faculty members from social science (history, law, psychology) and engineering departments (electrical/electronics and computer engineering). Participants were asked to indicate which high school mathematics topics and skills they thought were important to be successful at university education in their field. Results were compared across social science and engineering departments. Implications were drawn for curriculum specialists, students, and mathematics educators

The relationship between ghrelin levels and insulin resistance in men with idiopathic hypogonadotrophic hypogonadism at diagnosis and after therapy

Wstęp: Ostatnio wykazano, że grelina wpływa na bilans energetyczny i czynności rozrodcze, jednak jej rola w patogenezie insulinooporności nadal nie została wyjaśniona. Celem badania jest przede wszystkim ocena zależności między insulinoopornością i stężeniem greliny u mężczyzn z hipogonadyzmem, a następnie wykazanie wpływu leczenia testosteronem na stężenia insuliny i greliny. Materiał i metody: Do badania włączono 24 mężczyzn z nowo rozpoznanym idiopatycznym hipogonadotropowym hipogonadyzmem (IHH, idiopathic hypogonadotropic hypogonadism) i 20 zdrowych mężczyzn. Stężenie greliny, insuliny, glukozy, testosteronu całkowitego i wolnego, wartości wskaźników HOMA-IR i QUICKI oraz procentową zawartość tłuszczu w organizmie określono u wszystkich osób na początku badania, a u mężczyzn z hipogonadyzmem również po zakończeniu terapii. Wyniki: U mężczyzn z hipogonadyzmem stwierdzono istotnie niższe stężenia całkowitego i wolnego testosteronu, greliny i mniejszą wartość wskaźnika QUICKI niż w grupie kontrolnej, natomiast procentowa zawartość tłuszczu w organizmie, i wartość wskaźnika HOMAIR były wyższe u mężczyzn z IHH niż u zdrowych mężczyzn. Po leczeniu testosteronem u mężczyzn z hipogonadyzmem odnotowano istotne zwiększenie stężenia greliny i wskaźnika QUICKI oraz zmniejszenie wartości wskaźnika HOMA-IR i masy tkanki tłuszczowej. Obliczono współczynnik korelacji Pearsona i wykazano, że u mężczyzn z hipogonadyzmem stężenie greliny jest skorelowane dodatnio ze stężeniami całkowitego i wolnego testosteronu i wartością wskaźnika QUICKI oraz ujemnie z zawartością tkanki tłuszczowej i wskaźnikiem HOMA-IR. Po 6 miesiącach terapii testosteronem korelacje te nadal były obecne. Wnioski: Powyższe dane potwierdzają tezę, że grelina może stanowić wspólne ogniwo dla mechanizmów regulujących funkcje rozrodcze i homeostazę metaboliczną. (Endokrynol Pol 2010; 61 (4): 351-358)Introduction: It has recently been shown that ghrelin affects energy balance and reproductive function, but the role of ghrelin in the pathogenesis of insulin resistance is unclear. Firstly to assess the interaction between insulin resistance and ghrelin levels in hypogonadal men, and then to show the effects of testosterone (T) therapy on insulin and ghrelin. Material and methods: Twenty-four male patients newly diagnosed with idiopathic hypogonadotropic hypogonadism (IHH) and 20 healthy male subjects were enrolled in this study. Ghrelin, insulin, glucose, total and free testosterone levels, HOMA-IR and QUICKI, and percentage of body fat mass were determined at baseline in all subjects and after therapy in hypogonadal men. Results: When compared with control subjects, hypogonadal men had significantly lower total and free T concentrations, ghrelin levels, and QUICKI whereas they had significantly higher body fat mass and HOMA-IR score. Following T therapy, a significant increase in ghrelin and QUICKI, and a decrease in HOMA-IR score and body fat mass were demonstrated in hypogonadal men. Calculation of the Pearson coefficient showed that ghrelin concentrations in hypogonadal men were positively correlated with free and total testosterone and QUICKI, whereas they were negatively correlated with body fat mass and HOMA-IR. After six months of T therapy, these correlations were still observed. Conclusions: Our data supports the notion that ghrelin may constitute an important link between the regulation of reproduction and metabolic homeostasis. (Pol J Endocrinol 2010; 61 (4): 351-358

The inexorable resistance of inertia determines the initial regime of drop coalescence

Drop coalescence is central to diverse processes involving dispersions of drops in industrial, engineering and scientific realms. During coalescence, two drops first touch and then merge as the liquid neck connecting them grows from initially microscopic scales to a size comparable to the drop diameters. The curvature of the interface is infinite at the point where the drops first make contact, and the flows that ensue as the two drops coalesce are intimately coupled to this singularity in the dynamics. Conventionally, this process has been thought to have just two dynamical regimes: a viscous and an inertial regime with a crossover region between them. We use experiments and simulations to reveal that a third regime, one that describes the initial dynamics of coalescence for all drop viscosities, has been missed. An argument based on force balance allows the construction of a new coalescence phase diagram

Subject-Specific Lesion Generation and Pseudo-Healthy Synthesis for Multiple Sclerosis Brain Images

Understanding the intensity characteristics of brain lesions is key for defining image-based biomarkers in neurological studies and for predicting disease burden and outcome. In this work, we present a novel foreground-based generative method for modelling the local lesion characteristics that can both generate synthetic lesions on healthy images and synthesize subject-specific pseudo-healthy images from pathological images. Furthermore, the proposed method can be used as a data augmentation module to generate synthetic images for training brain image segmentation networks. Experiments on multiple sclerosis (MS) brain images acquired on magnetic resonance imaging (MRI) demonstrate that the proposed method can generate highly realistic pseudo-healthy and pseudo-pathological brain images. Data augmentation using the synthetic images improves the brain image segmentation performance compared to traditional data augmentation methods as well as a recent lesion-aware data augmentation technique, CarveMix. The code will be released at https://github.com/dogabasaran/lesion-synthesis.Comment: 13 pages, 6 figures, 2022 MICCAI SASHIMI (Simulation and Synthesis in Medical Imaging) Workshop pape

Pinch-off of a surfactant-covered jet

Surfactants at fluid interfaces not only lower and cause gradients in surface tension but can induce additional surface rheological effects in response to dilatational and shear deformations. Surface tension and surface viscosities are both functions of surfactant concentration. Measurement of surface tension and determination of its effects on interfacial flows are now well established. Measurement of surface viscosities, however, is notoriously difficult. Consequently, quantitative characterization of their effects in interfacial flows has proven challenging. One reason behind this difficulty is that, with most existing methods of measurement, it is often impossible to isolate the effects of surface viscous stresses from those due to Marangoni stresses. Here, a combined asymptotic and numerical analysis is presented of the pinch-off of a surfactant-covered Newtonian liquid jet. Similarity solutions obtained from slender-jet theory and numerical solutions are presented for jets with and without surface rheological effects. Near pinch-off, it is demonstrated that Marangoni stresses become negligible compared to other forces. The rate of jet thinning is shown to be significantly lowered by surface viscous effects. From analysis of the dynamics near the pinch-off singularity, a simple analytical formula is derived for inferring surface viscosities. Three-dimensional, axisymmetric simulations confirm the validity of the asymptotic analyses but also demonstrate that a thinning jet traverses a number of intermediate regimes before eventually entering the final asymptotic regime

Self-similar rupture of thin films of power-law fluids on a substrate

Thinning and rupture of a thin film of a power-law fluid on a solid substrate under the balance between destabilizing van der Waals pressure and stabilizing capillary pressure is analysed. In a power-law fluid, viscosity is not constant but is proportional to the deformation rate raised to the n−1 role= presentation style= box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; font-variant: inherit; font-stretch: inherit; line-height: normal; font-family: inherit; vertical-align: baseline; display: inline; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; position: relative; \u3en−1n−1 power, where 00n=1n=1 for a Newtonian fluid). In the first part of the paper, use is made of the slenderness of the film and the lubrication approximation is applied to the equations of motion to derive a spatially one-dimensional nonlinear evolution equation for film thickness. The variation with time remaining until rupture of the film thickness, the lateral length scale, fluid velocity and viscosity is determined analytically and confirmed by numerical simulations for both line rupture and point rupture. The self-similarity of the numerically computed film profiles in the vicinity of the location where the film thickness is a minimum is demonstrated by rescaling of the transient profiles with the scales deduced from theory. It is then shown that, in contrast to films of Newtonian fluids undergoing rupture for which inertia is always negligible, inertia can become important during thinning of films of power-law fluids in certain situations. The critical conditions for which inertia becomes important and the lubrication approximation is no longer valid are determined analytically. In the second part of the paper, thinning and rupture of thin films of power-law fluids in situations when inertia is important are simulated by solving numerically the spatially two-dimensional, transient Cauchy momentum and continuity equations. It is shown that as such films continue to thin, a change of scaling occurs from a regime in which van der Waals, capillary and viscous forces are important to one where the dominant balance of forces is between van der Waals, capillary and inertial forces while viscous force is negligible

Evaluating Immersive Teleoperation Interfaces: Coordinating Robot Radiation Monitoring Tasks in Nuclear Facilities

We present a virtual reality (VR) teleoperation interface for a ground-based robot, featuring dense 3D environment reconstruction and a low latency video stream, with which operators can immersively explore remote environments. At the UK Atomic Energy Authority's (UKAEA) Remote Applications in Challenging Environments (RACE) facility, we applied the interface in a user study where trained robotics operators completed simulated nuclear monitoring and decommissioning style tasks to compare VR and traditional teleoperation interface designs. We found that operators in the VR condition took longer to complete the experiment, had reduced collisions, and rated the generated 3D map with higher importance when compared to non-VR operators. Additional physiological data suggested that VR operators had a lower objective cognitive workload during the experiment but also experienced increased physical demand. Overall the presented results show that VR interfaces may benefit work patterns in teleoperation tasks within the nuclear industry, but further work is needed to investigate how such interfaces can be integrated into real world decommissioning workflows