Deformation induced martensite characterization in Fe-30%Ni-5%Cu alloy

Deformation induced martensite properties were examined according to existing martensite morphology, crystallography and formation temperatures for different prior austenite homogenization conditions in Fe-30%Ni-5%Cu alloy. Scanning electron microscope (SEM), differential scanning calorimetry (DSC) and X-ray diffraction (XRD) techniques were employed to investigation. Scanning electron microscope observations showed elongated deformation induced martensite morphology in the austenite phase of alloy. As well, after deformation martensite start temperatures (Ms) were determined as -101°C and -105°C from DSC measurements for different homogenization conditions. In addition, X-ray diffraction analysis revealed the face centred cubic (fcc) of austenite phases and body centred cubic (bcc) deformation induced martensite phases for all studied samples

Geometry Optimization Calculations for the Elasticity of Gold at High Pressure

We present embedded atom method based geometry optimization aspects of pressure effect on some elastic and mechanical properties of gold. During study, we determined the pressure dependency of equilibrium volume, typical cubic elastic constants, bulk modulus, shear modulus, young modulus, and elastic wave velocities of the considered metal with varying pressure between 0 GPa and 1000 GPa. Finally, we carried out a benchmark between our results and other available theoretical calculations and experimental data. The results of the study mutually agree with the previous findings and provide a deeper outlook for high pressure behavior of the studied metal

Effective Strategies for Protecting Human Rights: A Conference Engaging the International Community

Human rights protection needs teeth. And those who work in the disparate field of human rights need to see the system more comprehensively and strategically. Far too often, political issues interfere with enforcement of human rights laws and allow violators to hide behind the unwillingness of national governments to take action to enforce existing laws against human rights violators. Lack of commitment to human rights enforcement or timely preventative or intervention actions have led to violators being left unpunished for torture, rape and genocide. This failure of governments means that there is a lack of deterent power sufficient to inhibit potential human rights violators who know they will not be legally pursued after a conflict has ended

Hamilton-Jacobi quantization of singular Lagrangians with linear velocities

In this paper, constrained Hamiltonian systems with linear velocities are investigated by using the Hamilton-Jacobi method. We shall consider the integrablity conditions on the equations of motion and the action function as well in order to obtain the path integral quantization of singular Lagrangians with linear velocities.Comment: late

Effects of antimitotic agents on haploid plant production from unpollinated ovules of sugar beet (beta vulgaris l.)

The effects of antimicrotubule agents on haploid embryo formation from unpollinated ovules of sugar beet (Beta vulgaris L.) were investigated. The antimitotic agent colchicine (at 100 and 150 mg/l) and trifluralin (at 5.0 mg/l) increased the frequency of haploid embryo formation whereas pronamide (at 76.9 and 128.2 mg/l) and trifluralin (at 3.4 mg/l) decreased. Ovules that were non-treated with antimicrotuble agents (i.e., ovules of the control treatment) produced higher percentages of haploid embryos (4.25 %) when compared to the pronamide and trifluralin at 3.4 mg/l concentration. Toxic effects of these agents on embryo formation from ovules were evident. A significant genotypic variation among the lines used was observed. The line M4 produced the highest yield with a mean of 14.71% haploid embryo production while the line M2 producing no embryos at all

The prophylactic efficacy of Anatolian propolis in individuals at high risk of COVID-19

OBJECTIVE: No prophylactic treatment is available for individuals at high risk of developing COVID-19. This study, which was conducted between December 25, 2020, and January 25, 2021, is one of the first clinical studies to evaluate the efficacy of Anatolian propolis supplement against COVID-19. The aim was to obtain evidence on the prophylactic use of Anatolian propolis in individuals at high risk of developing COVID-19. SUBJECTS AND METHODS: This volunteer-based study was conducted in two centers. The study involved 209 healthcare professionals (physicians, nurses, medical secretaries) from Emergency Medicine Department of Medical Faculty of Ataturk University and Emergency Medicine Department of Rize Recep Tayyip Erdogan University. 204 participants meeting the study criteria were divided into two groups as experimental group and control group. The experimental group received 20 drops of BEE’O UP (BEE&YOU) 30% Propolis drops twice a day during a follow-up period of 1 month. The control group received no supplement but was followed up. The participants showing symptoms during the study and all the participants at the end the study were subjected to PCR testing. RESULTS: The evaluation of the results of PCR testing at the end of the study has shown that 14 participants from the control group and only 2 participants from the experimental group, who received Anatolian propolis supplement, were reported as positive cases. CONCLUSIONS: It has been found that a statistically significant protection was induced against COVID-19 infection in 98% of the experimental group, who received Anatolian propolis, compared to the control group

A private contributions game for joint replenishment

We study a non-cooperative game for joint replenishment by n firms that operate under an EOQ-like setting. Each firm decides whether to replenish independently or to participate in joint replenishment, and how much to contribute to joint ordering costs in case of participation. Joint replenishment cycle time is set by an intermediary as the lowest cycle time that can be financed with the private contributions of participating firms. We characterize the behavior and outcomes under undominated Nash equilibria. © Springer-Verlag 2011

Design and analysis of mechanisms for decentralized joint replenishment

We consider jointly replenishing multiple firms that operate under an EOQ like environment in a decentralized, non-cooperative setting. Each firm's demand rate and inventory holding cost rate are private information. We are interested in finding a mechanism that would determine the joint replenishment frequency and allocate the joint ordering costs to these firms based on their reported stand-alone replenishment frequencies (if they were to order independently). We first provide an impossibility result showing that there is no direct mechanism that simultaneously achieves efficiency, incentive compatibility, individual rationality and budget-balance. We then propose a general, two-parameter mechanism in which one parameter is used to determine the joint replenishment frequency, another is used to allocate the order costs based on firms’ reports. We show that efficiency cannot be achieved in this two-parameter mechanism unless the parameter governing the cost allocation is zero. When the two parameters are same (a single parameter mechanism), we find the equilibrium share levels and corresponding total cost. We finally investigate the effect of this parameter on equilibrium behavior. We show that properly adjusting this parameter leads to mechanisms that are better than other mechanisms suggested earlier in the literature in terms of fairness and efficiency. © 2016 Elsevier B.V

A Schwarz lemma for K\"ahler affine metrics and the canonical potential of a proper convex cone

This is an account of some aspects of the geometry of K\"ahler affine metrics based on considering them as smooth metric measure spaces and applying the comparison geometry of Bakry-Emery Ricci tensors. Such techniques yield a version for K\"ahler affine metrics of Yau's Schwarz lemma for volume forms. By a theorem of Cheng and Yau there is a canonical K\"ahler affine Einstein metric on a proper convex domain, and the Schwarz lemma gives a direct proof of its uniqueness up to homothety. The potential for this metric is a function canonically associated to the cone, characterized by the property that its level sets are hyperbolic affine spheres foliating the cone. It is shown that for an $n$-dimensional cone a rescaling of the canonical potential is an $n$-normal barrier function in the sense of interior point methods for conic programming. It is explained also how to construct from the canonical potential Monge-Amp\`ere metrics of both Riemannian and Lorentzian signatures, and a mean curvature zero conical Lagrangian submanifold of the flat para-K\"ahler space.Comment: Minor corrections. References adde

문화적 정체성을 가진 현대 세라믹 개발에서의 디자인-R&D 인터렉션

The importance of culture and cultural products, which can be said to exist so long as modern-traditional elements are together, was recognized at the end of the past century, when the impoverishment of the modern world had started to be noticed. The issues of tradition and cultural originality were neglected in Turkey in the process of industrialization in 20th century, and it was only towards the end of the century that the awareness that cultural richness is a value to be cherished arose. In the 21st century, various national and international projects are made in the name of revitalizing the cultural heritage. However, production in the form of reproduction cannot achieve cultural continuity. The originals survive but imitations and reproductions are stillborn. If tradition and culture involve, besides historicity, a yearning for improvement, then a project of revitalization of historical ceramics would be able to achieve cultural continuity only by keeping the good qualities and developing and improving others. Turkey has a rich and diverse heritage of ceramics culture, thanks to its geographical position as a natural bridge between Asia, Europe, and the Middle East. Research conducted in recent years in the ceramics centers of the country indicates that products of high design and technical quality are rare. This paper proposes that if Turkey is to revitalize its historical ceramics, which is an important cultural heritage, with a contemporary-original identity so that they can inspire new designs, the following are needed: • Creation of regional and periodical repertoires of all ceramics work produced in Turkey from the Neolithic ages to this day, and research into the products, production technologies, socio-cultural dimensions, and periodical transitions involved, • Imitation of these products to generate scientific knowledge, • Re-making of the products with tradition, • Contemporary production with some innovation, and • Innovative production so that new ceramics products are developed. These were identified as the steps of a method for designing ceramics with a cultural identity. Although the products to be created are design products, the process of their production involves design know-how and artistic and scientific sensitivity. R&D activities have a direct effect on design quality, and. 문화와 문화 상품의 중요성은 현대적-전통적 요소가 공존하는 한 존재할 것이라 말할 수 있으며, 지난 세기말 현대 세계의 빈곤이 주목받기 시작하면서 그 중요성이 인정되었 다. 20세기 산업화의 과정에서 전통과 문화적 독창성이라는 이슈는 터키에서 무시되어 왔다. 문화적 자산이 소중한 가치라는 자각이 생긴 것은 지난 세기 말부터였다. 21세기에 다양한 국내외 프로젝트가 문화유산의 부활이라는 이름으로 시작되었다. 그러나 복제 형태의 생산은 문화적 영속성을 얻을 수 없다. 원본은 살아남지만 이미테이션과 복제는 처음부터 실패작이다. 만약 전통과 문화가 역사성 이외의 향상을 열망한다면, 역사적 세 라믹의 부활 프로젝트는, 좋은 퀄리티는 유지하되 다른 퀄리티는 발전, 향상시켜야만 문 화적 영속성을 얻을 수 있을 것이다. 터키는 아시아, 유럽, 중동의 자연적 교량이라는 지리적 위치 덕분에 풍부하고 다양한 세 라믹 문화유산을 가지고 있다. 최근 터키의 세라믹 센터에서 진행된 연구는 디자인과 기 술적 퀄리티가 높은 제품이 드물다는 것을 보여준다. 이 논문이 제안하고자 하는 것은, 만약 터키가 중요한 문화유산인 역사적 세라믹을 현대적-오리지널 아이덴티티를 가지고 부활시켜 뉴디자인에 영감을 불어넣고자한다면 다음과 같은 것이 필요하다는 것이다. • 신석기시대부터 현재까지 터키에서 생산된 모든 세라믹 작품들의 지역적, 정기적 레 퍼토리 창조와 그에 관련된 제품, 제작 기술, 사회문화적 특징과 정기적인 변화에 대 한 연구 • 과학적 지식 창출을 위한 이들 제품의 이미테이션 • 전통적 제품들의 리메이킹 • 새로운 세라믹 개발을 위한 혁신적인 제작 이들은 문화적 정체성을 가진 세라믹을 디자인하는 방법의 단계들로 인식되었다. 만들어 질 제품이 디자인 제품이라 하더라도 제작 과정은 디자인 노하우와 예술적, 과학적 감수 성을 포함하다. R&D 활동은 디자인 퀄리티, 디자인 과정에 직접적 영향을 미치며 R&D 활동을 가이드한다