bluuebunny/crossref_metadata_2025 huggingface dataset:
Short Communication: Adoption level of indigenous communities on agricultural technology in East Kalimantan, Indonesia: Problem and adaptive solutions
Authors: Imang Ndan
Published: March 2020

Abstract. Imang N. 2020. Short Communication: Adoption level of indigenous communities to agricultural technology: problem and adaptive solutions in East Kalimantan, Indonesia. Biodiversitas 21: 1160-1164. The economic and cultural background of the indigenous people of the Dayak Borneo was traditional shifting cultivation, hunting, and gathering. Since the 1980s, Indonesian central government promoted Resettlement Program by relocating them in down rivers to encourage and to improve their agricultural and economic life. By living in downriver with limited farming areas, they, of course, need more products of agriculture and therefore government promoted agricultural extension. The objectives of the study are to: assess adoption level of two indigenous Dayak communities on agricultural technology, assess the causes of problems on adoption of agricultural technology, and seek adaptive strategy in implementing agricultural technology. Data were collected by interviewing 54 respondents that were selected randomly and descriptive qualitative approach was used for data analysis. Some important findings were: (i) adoption level of 60% i.e. Low level and 40% i.e. middle level in both villages; (ii) the low level of adoption was caused by some factors, such as: low performance of the extension officers which was caused by the lack support from government, and the background of the farmers; farmers with low education background need visual media to understand the extension and to see the evidence of the new technology; (iii) adaptive strategies to improve agricultural extension level such as: government should support the extension officers with appropriate visual and material support such as LCD projector, portable generator, appropriate training and communication skill that suitable with socio-cultural background of the respondents. The extension officers also need to understand the cultural background of the respondents. Practical implication is that the government can develop more typical effective method of extension for indigenous communities with low educational background and traditional way of agriculture. Theoretical implications, of course, are to provide specific further information for research related to agricultural extension.
Government’s social responsibility, citizen satisfaction and trust
Authors: Mizrahi Shlomo , Cohen Nissim , Vigoda-Gadot Eran
Published: March 2020

This article investigates the complex relationships between citizens’ perceptions about the government’s social responsibility, their satisfaction with public services and their trust in government institutions. It uses data from a national survey of citizens in Israel and focuses on satisfaction with health care. We build on previous bureaucratic and administrative theory, and suggest two competing models of these relationships: (1) perceptions about the government’s social responsibility are a source of citizens’ satisfaction and trust; and (2) perceptions about the government’s social responsibility are an outcome of citizens’ satisfaction and trust. Our findings demonstrate the important role of public perceptions about the government’s social responsibility, as well as the perceived performance of public health-care services, in building trust among citizens. The article also highlights the methodological challenges of determining cause and effect in research on trust.
Social business innovation: A fresh conceptualisation of collective practices
Authors: Mele Cristina , Russo-Spena Tiziana , Federico University of Naples , Pels Jaqueline , Tregua Marco
Published: March 2020

Purpose
 The aim of this paper is to offer a comprehensive understanding of social business innovation by addressing both its conceptualisation and its process.
 Design/Methodology/Approach
 Because this multifaceted and complex field is still
emerging, we chose to adopt a qualitative research approach. We set out to explore cases in which social and business objectives were combined. We investigated B-Corporations, as this is a type of company that uses business models to solve social and environmental problems.
 Findings

Social business innovation prompts the emergence of new practices enabling social transformation and collective value co-creation processes, increasing actors' well-being and a service ecosystem's viability.
 Limitations
 This research focuses on firms' perspectives.
The analysis of societies, as the contexts in which effects take place, could have more completely identified the social business innovation processes.
 Implications
 This work frames social business innovation as an integrated concept and does not support the idea
of social and business as two separate issues capable of being joined according to contextual and occasional opportunities.
 Contributions
 This paper offers a fresh view of social business innovation as a new integrated approach to address the complexity of the
social issue as well as the business endeavour.
A mozgóképkultúra és médiaismeret tantárgy, valamint a tudatos médiahasználat oktatásának helyzete és szerepe a magyar közoktatásban
Authors: Kiss Anna , Segesdi Gergő
Published: March 2020

A média folyamatosan jelen van az életünkben, használjuk a munkához, a szórakozásban, az oktatásban, az élet minden területén. Tudatosan használjuk? Vajon minden korosztály tudatosan használja? Az iskolában megtanítják a tudatos médiahasználatot a diákoknak? Egyáltalán mit értünk ma hazánkban médiaoktatáson?Ezek a kérdések adták munkánk kiindulópontját. A dolgozat két nagyobb tematikus egységre oszlik. Az első egységben a Nemzeti Alaptanterv médiaoktatásra vonatkozó részének rövid tárgyalása után következik az a rész, amelyben a médiatudatosság tárgykörét, a hazai médiaoktatás helyzetét, valamint a fiatalok médiahasználati szokásait vizsgáltuk meg. A második tematikus egységben egy általunk elvégzett kérdőíves felmérés eredményeit taglaltuk, és próbáltunk azokból releváns következtetéseket levonni. Bár nem volt lehetőségünk reprezentatív felmérés elvégzésére, ennek ellenére úgy gondoljuk, hogy ez a vizsgálat így is értékes eredményekkel szolgált. Kérdőívünket 301 válaszadó töltötte ki. Meglepő volt tapasztalni, hogy a médiaórák milyen nagy arányban zajlanak fókuszálatlanul. Ezen túlmenően meglepő eredmény volt még, hogy milyen kevéssé frekventált a tudatos médiahasználat oktatása, annak ellenére, hogy a 2012-es, jelenleg is érvényben lévő Nemzeti alaptanterv nagy hangsúlyt helyez a médiatudatosság oktatására. Ezzel összhangban a kérdőívünket kitöltő válaszadók többsége is azt gondolja, hogy a médiaoktatásra igenis szükség van, valamint közel 50%-uk azt a választ adta, hogy a tudatos médiahasználatra kellene helyezni a hangsúlyt az oktatás során.
Didaktikus játékok használata a természettudományos gondolkodás fejlesztésére biológiaórán
Authors: Bónus Lilla , Nagy Lászlóné
Published: March 2020

A természettudományok, köztük a biológia tanításának kiemelt célja a természettudományos gondolkodás fejlesztése, amelynek egy lehetséges módszere a játék-alapú tanulás. A játék-alapú tanulás magába foglalja a didaktikus játékokat, amelyek specifikus iskolai funkcióval rendelkeznek, adott oktatási kontextusra vonatkoznak, integrálódnak abba, a tanár gondos felügyelete és ellenőrzése alatt valósulnak meg (Cojocariu és Boghian, 2014). Az esettanulmány részletesen bemutat egy didaktikus játékot, valamint tanórai kipróbálásának tapasztalatait. A bemutatott didaktikus játék célja a természettudományos kutatás egyik módszerének, a megfigyelésnek a gyakorlása játékos keretek között. A játék során a tanulók gyakorolják a mikroszkóp használatát, a mikroszkópban látott kép megfigyelését, adott szempontok szerinti leírását, a megfigyelt metszet azonosítását. Az adatfelvétel egy szegedi gimnázium 10. évfolyamos, humán tagozatos osztályában történt (N=30). A didaktikus játék osztálytermi kipróbálása során a tanórakutatás módszerét alkalmaztuk. Az adatfelvétel során tanár szakos hallgatók és a terület szakértője rögzítették a tanulók viselkedésére vonatkozó megállapításaikat egy saját készítésű ellenőrző listán. Mindemellett felvettünk egy tanulói kérdőívet és egy félig strukturált tanári interjút is az órát tartó kollégával. A tanulói kérdőív két részből állt: a feladat használhatóságára, illetve a tanulók tanulási motivációjára vonatkozóan tartalmazott állításokat. A tanulók az állításokat ötfokú Likert-skálán értékelték. Az eredmények alapján elmondható, hogy a készített mérőeszközök alkalmasak arra, hogy a tanulók didaktikus játékkal és a hozzá készített feladatlappal kapcsolatos véleményét feltárjuk, valamint a didaktikus játék alkalmas arra, hogy motiválja a tanulókat és segítse a megfigyelés módszerének megismerését, begyakorlását.
Effect of chitosan nanoparticles on microtensile bond strength of resin composite to dentin: an in vitro study
Authors: Mohamed Amr Mohsen , Nabih Sameh Mahoud , Wakwak Mohamed Ahmed
Published: March 2020

Objective: The purpose of this study was to evaluate the effect of chitosan nanoparticles on microtensile bond strength of resin composite to dentin using self etch adhesive after aging. Material and Methods: A total number of 90 freshly extracted, sound human molar teeth. Flat tooth surface was gained after cut of the occlusal surface. Three main groups according to pretreatment of dentin before adhesive application; 0.2 % chitosan, 2.5 % chitosan and no treatment control group. Universal self etch adhesive were applied according to manufacture instruction and 4 mm of Feltik Z250 xt composite. Storage of specimens for 1 day, 3 months and 6 months in 37O C distilled water. After that, the tooth was sectioned to beams of 1 mm x8 mm sticks for microtensile bond strength test using universal testing machine. Scanning electron microscope (SEM) was used to evalute the effect of chitosan nanoparticles on dentin and smear layer. Kruskal-Wallis test was used to compare between the three groups as well as the three aging periods. Dunn’s test was used for pair-wise comparisons. The significance level was set at P ? 0.05. Results: chitosan 0.2% is statistically significant increase in bond strength than chitosan 2.5% and control in one day group. Three months chitosan 0.2 % groups have statistically significant increase in bond strength than chitosan 2.5%. It was found in 6 months that control and chitosan 0.2 % have statistically significant increase in bond strength than chitosan 2.5%. There was statistically significant difference found between the three studied groups regarding bond strength at different storage times . Conclusion: Microtensile bond strength was influenced by different chitosan concentration. Different aging periods had no effect on the microtensile bond strength without application of chitosan and with application of 2.5% chitosan concentration.KEYWORDSChitosan nanoparticles; Microtensile bond strength; MMPs.
The Effect of Income Smoothing and Procyclicality Behavior on the Bank Credit Impairment Losses with IAS 39 Adoption in PSAK 55 as a Moderating Variable
Authors: Sparta Sparta , Trinova Nadya
Published: March 2020

The bank's credit impairment losses play a vital role in maintaining the stability and health of banks, as well as fulfilling the banks' function in channelling public funds. This study aims to determine the effect of income smoothing and the behavior of procyclicality against the banks' credit impairment losses, as well as the role of adoption of IAS 39 in PSAK 55 in moderating the influence of these two variables. The objects of this study are conventional commercial banks, listed on the Indonesia Stock Exchange within the research period of 2008-2017. By using a purposive sampling method, this study obtained 20 bank samples and 196 observations. The hypotheses in this research are tested using multiple regression analysis. This study shows that income smoothing has a positive effect on banks' credit impairment losses, whereas procyclicality and IAS 39 adoption in PSAK 55 does not affect the banksâ€™ credit impairment losses significantly. On the contrary, the adoption of IAS 39 in PSAK 55 weakens the positive effect of income smoothing; however, it cannot moderate the effect of procyclicality on the banks' credit impairment losses. The results of this study have implications for regulators' policies to reduce income smoothing practices, maintain financial system stability because the provision for losses from lowering credit scores is too low, accounting policies stipulated by banks emphasize the interpretation and application of standards, and professional judgment and contradictory policies that can cover deficiencies held by financial accounting standards. Another implication is the need for bank managers to anticipate that by 2020, PSAK adopted from IFRS can be useful.
POSITIONING IMAGES OF SEGMENTED OBJECTS BASED ON QT CROSS-PLATFORM ENVIRONMENT
Authors: Golovkin M. E.
Published: March 2020

The article provides information about the program developed on the basis of the Qt environment, which allows positioning the original image of an object within the field of attention in order to simplify the procedure for generating object features that are invariant to shift, change scale, and rotate its image. Provides an overview of modern methods and software tools for scaling images. The algorithm of the program and a series of computational experiments is described. During the first series, the program positions the image of a triangle within the field of attention using various scaling methods. According to the results of this series, it was concluded which method of scaling an image of an object gives the least loss of quality. In other series of experiments, the program centers and scales the images of a square and a circle inside the attention field with different sizes of the attention field (selection frame) corresponding to a single image scaling factor. Following the results of each series of xperiments, measurements of the sizes of positioned objects were carried out and the dependence of the ratio of their areas on the scaling factor was established. The difference between the maximum and minimum ratio of the coefficients for each series of experiments is calculated. On the basis of the data obtained, it was concluded that for further work with segmented objects of the scene and their positioning in the field of attention, the size of the selection frame of 256x256 pixels can be considered reference.
TA'02: Technikgestaltung im 21. Jahrhundert
Authors: Peissl W.
Published: March 2020

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Nanopartikel unter der Lupe
Authors: Fiedeler Ulrich , Fleischer Torsten , Decker Michael
Published: March 2020

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H. Rohracher (ed.): User Involvement in Innovation Processes. Strategies and Limitations from a Socio-Technical Perspective
Authors: Rohracher H.
Published: March 2020

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The Effect Of Brand Image And Perception Of Products On The Purchase Decisions Of Matic Motorcycle In East Belitung
Authors: Azmy Ahmad , Nauyoman Dery , Zakky Muhammad
Published: March 2020

This study aims to analyze the effect of brand image and product perception on purchasing decisions of automatic motorcycles in East Belitung. Motorbikes are vehicles that are in demand by consumers with a number of factors considering purchasing as needed. The object of this study analyzes how consumers consider a number of factors that serve as motorcycle purchasing decisions. This research was conducted for three months starting from August-October 2018. The location of the study was East Belitung with a total sample of 100 people. The variables used are brand image and product perception as an independent variable, while purchasing decisions as the dependent variable. The statistical method used to test data in this study is the method of multiple linear regression analysis. The results of this study are partially brand image has a significant influence on purchasing decisions, product perception has a significant influence on purchasing decisions. Simultaneously brand image and product perception have a joint influence on purchasing decisions.
Pengaruh Komitmen Perusahaan Terhadap Loyalitas Pelanggan Supermarket di Kota Manado
Authors: Mamusung Robby Tanod , Rasjid Effendy
Published: March 2020

The research objective was to test and to analyze the influence of corporate commitment towards customer loyalty, especially in the retail industry. In such an industry, corporate commitment is the key to improve competitiveness. The research was carried out in Manado City with 70 supermarket customer as the sample. The sampling technique was purposive sampling. The research result showed that corporate commitment had significantly positive influence on customer loyalty. Such finding was in line with the concept of Commitment - Trust Theory, stating that Commitment-Trust is two based factors relationship marketing interaction would give a success relationship so that it would improve customer trust and eventually they would be back to shop more. The implication of such managerial research was that the supermarket leader in Manado city must focus more and emphasize more on the dimension of corporate commitment especially in terms of room is roomy or not cramped in the supermarket. Once they could be met, then costumer trust would increase, and it led to an increase in customer loyalty to shopping more and invites others to shop at the supermarket. The limitation of this research was the limited area of research, therefore, the area scope should be broader for the next research so that the conceptual model could be generalized. Tujuan penelitian ini adalah untuk menguji dan menganalisis pengaruh komitmen perusahaan terhadap loyalitas pelanggan, terutama di industri ritel. Dalam industri seperti itu, komitmen perusahaan adalah kunci untuk meningkatkan daya saing. Penelitian ini dilakukan di Kota Manado dengan sampel 70 pelanggan supermarket. Teknik pengambilan sampel adalah purposive sampling. Hasil penelitian menunjukkan bahwa komitmen perusahaan berpengaruh positif signifikan terhadap loyalitas pelanggan. Temuan tersebut sejalan dengan konsep Teori Komitmen - Kepercayaan, yang menyatakan bahwa Komitmen-Kepercayaan adalah dua faktor yang mendasari interaksi pemasaran yang akan memberikan hubungan yang sukses sehingga akan meningkatkan kepercayaan pelanggan dan akhirnya mereka akan kembali berbelanja lebih banyak. Implikasi dari penelitian manajerial tersebut adalah bahwa pemimpin supermarket di kota Manado harus lebih fokus dan lebih menekankan pada dimensi komitmen perusahaan terutama dalam hal ruang yang lapang atau tidak sempit di supermarket. Begitu mereka dapat bertemu, maka kepercayaan pelanggan akan meningkat, dan itu menyebabkan peningkatan loyalitas pelanggan untuk berbelanja lebih banyak dan mengundang orang lain untuk berbelanja di supermarket. Keterbatasan penelitian ini adalah bidang penelitian yang terbatas, oleh karena itu, ruang lingkup wilayah harus lebih luas untuk penelitian berikutnya sehingga model konseptual dapat digeneralisasi.
Determinasi Minat Beli pada Industri Kecil Menengah di kota Malang
Authors: Kurniawan Mochammad Lukman Zaini
Published: March 2020

This study aims to determine the extent to which the variable store image, trust and brand recognition influences the purchase intention of consumers at SME’s in Malang city. The location of research are two shops in the Sanan area that produce tempe chips, two stores in the Pandanwangi area that produce corn chips, one store in the Polowijen area and one store in Ciliwung that produces fruit chips. The population is all consumers that can’t known with certainty. Samples are consumers who visited in six stores. The sampling technique is purposive sampling. Data analysis using SEM GSCA. The results of this study are (1) store image has a positive not significant correlation on trust; (2) store image has a positive significant correlation on purchase intention; (3) store image has a positive significant correlation on brand recognition; (4) brand recognition has a positive significant correlation on trust; (5) brand recognition has a positive not significant correlation on purchase intention; (6) trust has a positive significant correlation on purchase intention; (7) store image has a positive significant correlation on purchase intention through in trust.
A Country-Comparative Analysis of the Transposition of the EU Non-Financial Directive: An Institutional Approach
Authors: Aureli Selena , Salvatori Federica , Magnaghi Elisabetta
Published: March 2020

CSR practices and reporting vary across countries and companies. Accouting studies using institutional theory show that even where there are coercive pressures to converge, local practices and traditions are other types of pressures that play a role in maintaining divergence. Similarly, legal studies indicate that harmonisation attempts made by the European Union are usually challenged by States attempting to maintain the status quo of the local context, and this may also apply to CSR reporting harmonization.

This research investigates whether or not the institutional pressure toward non-financial reporting harmonization represented by the Directive/2014/95/EU led to convergent behaviours between Member States, at least at the transposition stage. Transposition laws in Member States where CSR has historically played a limited role (i. e. Romania and Bulgaria) are compared with those issued by countries where CSR traditions are much more well developed (France, Belgium and the UK). The analysis focuses on how both mandatory and discretionary requirements have been transposed at a national level.

The transposition outcome is analysed in the face of economic-, government- and society-related factors of each country and results show that on several occasions, divergence is catalysed by differences in national business systems. This is aligned with the results of previous studies (e. g. Jamali and Neville, 2011), which argue that historical, cultural, economic and political local contexts mould the CSR conceptualisation existing in a given country, and therefore the convergence of different CSR practices is only apparent.
On a fractional thin film equation
Authors: Segatti Antonio , Vázquez Juan Luis
Published: March 2020

This paper deals with a nonlinear degenerate parabolic equation of orderαbetween 2 and 4 which is a kind of fractional version of the Thin Film Equation. Actually, this one corresponds to the limit valueα= 4 while the Porous Medium Equation is the limitα= 2. We prove existence of a nonnegative weak solution for a general class of initial data, and establish its main properties. We also construct the special solutions in self-similar form which turn out to be explicit and compactly supported. As in the porous medium case, they are supposed to give the long time behaviour or the wide class of solutions. This last result is proved to be true under some assumptions.

Lastly, we consider nonlocal equations with the same nonlinear structure but with order from 4 to 6. For these equations we construct self-similar solutions that are positive and compactly supported, thus contributing to the higher order theory.
Role of carbon and nitrogen in the improvement of corrosion resistance of new powder metallurgy Co-Cr-Mo alloys
Authors: Garcia-Cabezon Cristina , Garcia-Hernandez Celia , Rodriguez-Mendez Maria L. , Herranz Gemma , Martin-Pedrosa Fernando
Published: March 2020

Microstructural changes that result in relevant improvements in mechanical properties and electrochemical behavior can be induced using different sintering conditions of ASTM F75 cobalt alloys during their processing using powder metallurgy technique. It has been observed that the increase in carbon and nitrogen content improves corrosion resistance and mechanical properties as long as the precipitation of carbides and nitrides is avoided, thanks to the use of rapid cooling in water after the sintering stage. In addition, the reduction of the particle size of the powder improves hardness and resistance to corrosion in both acid medium with chlorides and phosphate-buffered medium that simulates the physiological conditions for its use as a biomaterial. These results lead to increased knowledge of the role of carbon and nitrogen content in the behavior displayed by the different alloys studied.
On-demand optimize design of sound-absorbing porous material based on multi-population genetic algorithm
Authors: Wang Yonghua , Liu Shengfu , Wu Haiquan , Zhang Chengchun , Xu Jinkai , Yu Huadong
Published: March 2020

Porous material (PM) shows good sound absorption performance, however, the sound absorbing property of PM with different parameters are greatly different. In order to match the most suitable absorbing materials with the most satisfactory sound-absorbing performance according to the noise spectrum in different practical applications, multi-population genetic algorithm is used in this paper to optimize the parameters of porous sound absorbing structures that are commonly used according to the actual demand of noise reduction and experimental verification. The results shows that the optimization results of multi-population genetic algorithm are obviously better than the standard genetic algorithm in terms of sound absorption performance and sound absorption bandwidth. The average acoustic absorption coefficient of PM can reach above 0.6 in the range of medium frequency, and over 0.8 in the range of high frequency through optimization design. At a mid-to-high frequency environment, the PM has a better sound absorption effect and a wider frequency band than that of micro-perforated plate. However, it has a poor sound absorption effect at low frequency. So it is necessary to select suitable sound absorption material according to the actual noise spectrum.
Research on Electromagnetic Sensitivity Properties of Sodium Chloride during Microwave Heating
Authors: Chen Hua , Chen Junjiang , Wang Weijun , Lin Huan
Published: March 2020

The multimode resonant cavity is the most common cavity. The material often shows on selective heating performance during the heating process due to the effect of microwave heating having a closely relationship with the electromagnetism parameters. This paper is based on finite difference time domain method (FDTD) to establish the electromagnetic-thermal model. The electromagnetic sensitivity property parameters of sodium chloride including relative dielectric constant, loss angle tangent and water content of sodium chloride is studied during the heating and drying process. The heating rate and the electric field distribution of sodium chloride, at the different water content, were simulated with the electromagnetic characteristic parameters changing. The results show that with the electromagnetic sensitivity property parameters varying, the electric field strength, heating rate and steady-state temperature of the heating material will all have a variety in the cavity. Some measures are proposed to improve the heating efficiency and ensure the stability of the microwave heating system in the industrial application.
A time delay dynamical model for outbreak of 2019-nCoV and the parameter identification
Authors: Chen Yu , Cheng Jin , Jiang Yu , Liu Keji
Published: March 2020

In this paper, we propose a novel dynamical system with time delay to describe the outbreak of 2019-nCoV in China. One typical feature of this epidemic is that it can spread in the latent period, which can therefore be described by time delay process in the differential equations. The accumulated numbers of classified populations are employed as variables, which is consistent with the official data and facilitates the parameter identification. The numerical methods for the prediction of the outbreak of 2019-nCoV and parameter identification are provided, and the numerical results show that the novel dynamic system can well predict the outbreak trend so far. Based on the numerical simulations, we suggest that the transmission of individuals should be greatly controlled with high isolation rate by the government.
The contribution of twins conceived by in vitro fertilization to preterm birth rate: observations from a quarter of century
Authors: Ivandić Jelena , Blickstein Isaac , Šopić Rahelić Ana-Maria , Eškinja Eduard , Štimac Tea
Published: March 2020

Objective

Little information exists related to the contribution of assisted reproductive technology (ART) twins to the preterm and very preterm birth rate. We sought to examine this contribution over a period of more than two decades in a tertiary perinatal center.

Methods

We identified all preterm births from 1993 to 2017, born at <37 or <32 weeks’ gestation, by mode of conception [in vitro fertilization (IVF) vs. non-IVF pregnancies]. We generated trend lines of the annual change of the dependent variable (% preterm birth).

Results

We evaluated 74,299 births, including 3934 (5.3%) preterm births at <37 and 826 (1.1%) at <32 weeks’ gestation. In this period, 1019 (1.4%) twin pairs were born including 475 (46.6%) and 80 (7.8%) at <37 and <32 weeks, respectively. There were 213 (5.4%) IVF pregnancies among the preterm births at <37 weeks, including 88 (41.3%) twins. Fifteen (1.8%) births of all IVF gestations were at <32 weeks, and all were twins. Whereas the annual rate of spontaneous twins did not change, a significant increase over time exists for IVF twins (P < 0.05, R2 = 0.6). We demonstrated an increase in IVF twin births at <37 weeks but not for spontaneously conceived twins. Whereas the twin birth rate at <32 weeks did not change over time, all preterm births at <32 weeks following IVF were twins.

Conclusion

The risk of twins after ART increasingly contributes to preterm births at <37 weeks and ART twins are at significant risk for preterm births at <32 weeks.
Exponential behavior of neutral impulsive stochastic integro-differential equations driven by Poisson jumps and Rosenblatt process
Authors: Kasinathan Ravikumar , Kasinathan Ramkumar , Hamit Mahamat Hassan Mahamat , Diop Mamadou Abdoul
Published: March 2020

In this article, we are concerned with the neutral impulsive stochastic integro-differential equations driven by Poisson jumps and Rosenblatt process. By using resolvent operator and some analysis techniques, we ensure existence and uniqueness of solutions. Further, we investigate exponential stability of mild solutions. We have also given an example to illustrate our theoretical results.
Plasmonic nanocavity enhanced vibration of graphene by a radially polarized optical field
Authors: Li Xuwei , Zhang Tingting , Fu Zhengkun , Kang Bowen , Mi Xiaohu , Sun Meijuan , Zhang Chengyun , Zhang Zhenglong , Zheng Hairong
Published: March 2020

The combination of 2D materials and surface plasmon can produce some novel optical phenomena that have attracted much attention. Illuminated by light with different polarization states, the field distribution around the plasmonic structure can control the light-matter interaction. The interaction between graphene and light can be strongly enhanced by employing radially polarized beams in a nanocavity. Here, we study the selectively enhanced vibration of graphene in a coupled plasmonic gold nanocavity with a radially polarized optical field, and the coupling and enhancing mechanisms are investigated both experimentally and numerically. By focusing a radially polarized beam, a high z component of a localized near field in the nanocavity is provided to strongly enhance the interaction between graphene and light, which can be used to enhance the vibrational signal of the interlayer. For the in-plane vibration of graphene, a similar enhancement is obtained with a linearly and radially polarized optical field. A plasmonic nanocavity is used to enhance the vibration of graphene, which provides potential applications in studying the out-of-plane vibration mode and exploring the mechanism of the interlayer coupling of 2D materials.
The Fall of the Post-Industrial, Post-Global, Post-Colonial World
Authors: Burocco Laura
Published: March 2020

The essay presents the dynamics of what we call “new globalization,” a second stage of the emergence of a new regime, which, as a result of capital’s need to continuously find new frontiers of accumulation, is extending to countries previously considered as residual peripheries. It analyzes cultural diplomacy and university education as two tools used to manage power and reproduce class divisions now designed by an economic meritocratic system of global intellectual creative elites locally circumscribed and globally connected.
Noise identification based on spectral analysis and noisy transfer function approach for fuel cells
Authors: Akinci Tahir Cetin , Seker Serhat , Dursun Erkan , Kilic Osman
Published: March 2020

In this study, some measurements like the current, voltage and hydrogen flow based on the fuel cell are investigated in spectral-domain as well as their time-domain representations and then, their spectral properties are extracted. Besides this, taking the simplified transfer function approach into account, which is defined between the hydrogen flow and current of the cell as an input-output pair, more detailed results are obtained. Therefore, the spectral parts of the fuel cell are put into categories under the impacts coming from the process, measurement circuits and digitizers. The process noise to be defined at very small frequencies (<15 Hz) can be explained as the effects of the various physical and chemical interactions emerging in the fuel cell. Moreover, this study analysed the spectral characteristics of fuel cells for current, voltage and hydrogen flow in detail.
Zur Begründung der Freiheit
Authors: Vaubel Roland
Published: March 2020

Bei der Rechtfertigung der Freiheit geht es um die Optimierung des Wissens und der Anreize. Freiheit dient der optimalen Nutzung des vorhandenen Wissens und der optimalen Produktion neuen Wissens, und sie gibt dem handelnden Individuum die bestmöglichen Anreize. Der Verfasser analysiert die Geschichte dieser Rechtfertigungen. Informationsökonomische Begründungen verdanken wir Adam Smith, Jeremy Bentham, Wilhelm von Humboldt, John Stuart Mill, Friedrich von Hayek und Karl Popper. Anreiztheoretische Begründungen finden sich bei Thomas von Aquin, Adam Smith und James Mill. Der Verfasser wendet sich gegen den Versuch, die Freiheit oder das Recht auf Eigentum evolutionstheoretisch mit der natürlichen Auslese zu rechtfertigen. Schließlich geht er der Frage nach, inwieweit das klassische Freiheitsziel mit anderen Zielen – dem Effizienzziel, der staatlichen Durchsetzung von Verträgen, der individuellen Wahlfreiheit, der politischen Partizipation und dem sozialistischen Freiheitsbegriff – vereinbar ist.
Winning the Fight Against Global Poverty One Experiment at a Time?
Authors: Flechtner Svenja
Published: March 2020

The Economics Nobel 2019 for Abhijit Banerjee, Esther Duflo and Michael Kremer for their experimental approach to alleviating global poverty has been received by economists with a wide array of reactions. This article introduces the experimental revolution in development economics and the work of Banerjee, Duflo and Kremer and then discusses a number of critiques that have been raised about it: methodological concerns relating to the internal and external validity of experiments in economics; a supposed focus of RCTs on the microlevel and a distraction of development economics away from structural issues; the scope of experimental research for poverty reduction; and normative concerns arising when experiments are used in development economics.
Diagnostic model of low visibility events based on C4.5 algorithm
Authors: Li Chao , Shi Yimin , Gao Ping , Shen Yang , Ma Chenchen , Shi Dawei
Published: March 2020

In this study the low visibility in Nanjing city is classified and predicted using observed data during 2014 to 2016 with machine-learning based decision tree algorithm (4.5). For this purpose, the model was trained with 3/4th of the data samples until the self-learning accuracy of the model reached 88.32%. The remaining 1/4th of the data samples were used to verify the model’s prediction ability, with the test accuracy reaching 88.34% indicating a good classification diagnosis effect of the model. The results produced with model, generated through learning from the training sample, it is found that the relative humidity, PM10 and PM2.5 are important factors in diagnosing “whether low visibility events will occur in Nanjing”: When relative humidity is favorable (i.e. <90%) and PM2.5 concentration is not high enough (i.e. <146), the probability of low visibility events may reduce; when relative humidity is relatively favorable (i.e. ≥ 90%) with a PM10 concentration ≥ 59, low visibility events are more likely to occur; when relative humidity is extremely favorable (i.e. ≥ 96%) with a low PM10 concentration (i.e. <59), there is also a high probability that low visibility events will occur.
Study on Macroscopic and Mesoscopic Mechanical Behavior of CSG based on Inversion of Mesoscopic Material Parameters
Authors: Guo Lixia , Zhang Yanan , Zhong Ling , Wang Minghua , Zhu Xuanyi
Published: March 2020

Cement Sand and Gravel (CSG) is a low-cost, environment-friendly composite material mixed of unscreened aggregate, cement, fly ash and water, and its properties differ from ordinary concrete due to different aggregate characteristics. In order to investigate the effect of aggregate characteristics on the mechanical behavior of CSG, this paper used numerical simulation method to divide the CSG into aggregate unit, cement mortar unit and interface unit at the mesoscopic level and randomly generate aggregate, then used laboratory uniaxial compression test results to inverse the said mesoscopic component parameters, and finally verified the rationality of mesoscopic numerical simulation. Based on the inversed parameters, the numerical simulation test of different aggregate grading was carried out and analyzed. The results showed that: (1) From the perspective of macroscopic mechanical properties, as the sand ratio increased, the aggregate occupancy and the peak stress decreased; under the same aggregate occupancy (the same sand ratio), the stress peak became higher with the improvement of aggregate grading (aggregates of small particle size increased); (2) At the mesoscopic level, the crack of CSG usually appeared on the interface and around the aggregate; the smaller the sand ratio was, the higher the aggregate occupancy was, the more obvious the stress concentration was, and the earlier the cracking of the test piece was, but there were many aggregates, so the eventual failure time was delayed. These research results can provide theoretical basis for engineering design and construction.
Evidentialität als argumentative Funktion am Beispiel des Deutschen, Russischen und Kasachischen
Authors: Dalbergenova Ljasat , Zharkynbekova Sholpan
Published: March 2020

The present paper is dedicated to evidentiality in the argumentative discourse in the communicative-pragmatic aspect (using the example of German, Russian and Kazakh). The paper contributes to the research of deeper and fundamental issues of a speaker’s point of view in constructing an argumentation. The linguistic features of evidentiality in German, Russian and Kazakh are empirically determined and contrastively investigated. The evidential markings allow the speaker to remain credible and reliable in his arguments.
Leitbild Lebensreform. Harry Graf Kessler und Karl Ernst Osthaus als Museumsgründer
Authors: Kämpf Tobias
Published: March 2020

At the beginning of the twentieth century, Germany moved to the institutional forefront of the art world. Through the creation of two museums, in Hagen and in Weimar, dedicated to contemporary avant-gardes in art, architecture, and design, the recently united nation propagated its claim for international leadership in the cultural sphere. Both establishments were the result of private initiatives of collectors who possessed great literary talent and artistic distinction and who were strongly opposed to the aesthetic ideals of the main arbiter of German taste, Emperor William II. This essay is the first comparative study of the museums in Hagen and Weimar, whose founders disagreed with developments in Darmstadt but were inspired by those in Hamburg and, to a lesser degree, in Krefeld. Analyzing their intellectual origins and historic development, the essay provides a comprehensive chronology as well as an articulate topography of early-twentieth-century German art institutions promoting cultural innovation.
Der schwangere Arzt im Praktikum: Interventionen der Gender Studies zu geschlechtergerechter Sprache
Authors: Degele Nina
Published: March 2020

Gender Studies sind im wissenschaftlichen und universitären Kanon angekommen. Sie unterfüttern gesellschaftliche Bestrebungen hin zu einer Egalisierung und Liberalisierung von Geschlechterverhältnissen mit sozial-, kultur-, geistes- und naturwissenschaftlichem Wissen. Angesichts politischer und gesellschaftlicher Verschiebungen nach rechts sind Befunde der Genderlinguistik zu genderkorrekter Sprache zunehmend in die Kritik geraten. Besonders lautstark machen rechte Bewegungen und Parteien dagegen mobil. Sie befürchten eine Aufweichung traditioneller Sicherheiten, die mit einer dichotomen und hierarchischen Geschlechterkonstellation verbunden sind. Einige Bemühungen der christlichen Kirchen zielen auf eine geschlechtergerechte Sprache, wenn sie die Anerkennung von institutionell Benachteiligten wie Frauen oder auch Homosexuellen im Blick haben. Ebenso sind aber auch deutliche Abgrenzungen bis hin zu einer vehementen Abwehr zu beobachten.
Androgen signaling pathways driving reproductive and metabolic phenotypes in a PCOS mouse model
Authors: Aflatounian Ali , Edwards Melissa C , Rodriguez Paris Valentina , Bertoldo Michael J , Desai Reena , Gilchrist Robert B , Ledger William L , Handelsman David J , Walters Kirsty A
Published: March 2020

As the mechanistic basis of polycystic ovary syndrome (PCOS) remains unknown, current management relies on symptomatic treatment. Hyperandrogenism is a major PCOS characteristic and evidence supports it playing a key role in PCOS pathogenesis. Classically, androgens can act directly through the androgen receptor (AR) or, indirectly, following aromatization, via the estrogen receptor (ER). We investigated the mechanism of androgenic actions driving PCOS by comparing the capacity of non-aromatizable dihydrotestosterone (DHT) and aromatizable testosterone to induce PCOS traits in WT and Ar-knockout (ARKO) mice. DHT and testosterone induced the reproductive PCOS-like features of acyclicity and anovulation in WT females. In ARKO mice, DHT did not cause reproductive dysfunction; however, testosterone treatment induced irregular cycles and ovulatory disruption. These findings indicate that direct AR actions and indirect, likely ER, actions of androgens are important mediators of PCOS reproductive traits. DHT, but not testosterone, induced an increase in body weight, body fat, serum cholesterol and adipocyte hypertrophy in WT mice, but neither androgen induced these metabolic features in ARKO mice. These data infer that direct AR-driven mechanisms are key in driving the development of PCOS metabolic traits. Overall, these findings demonstrate that differing PCOS traits can be mediated via different steroid signaling pathways and indicate that a phenotype-based treatment approach would ensure effective targeting of the underlying mechanisms.
Striatin heterozygous mice are more sensitive to aldosterone-induced injury
Authors: Garza Amanda E , Trefts Elijah , Katayama Rangel Isis A , Brooks Danielle , Baudrand Rene , Moize Burhanuddin , Romero Jose R , Ranjit Sanjay , Treesaranuwattana Thitinan , Yao Tham M , Adler Gail K , Pojoga Luminita H , Williams Gordon H
Published: March 2020

Aldosterone modulates the activity of both epithelial (specifically renal) and non-epithelial cells. Binding to the mineralocorticoid receptor (MR), activates two pathways: the classical genomic and the rapidly activated non-genomic that is substantially modulated by the level of striatin. We hypothesized that disruption of MR’s non-genomic pathway would alter aldosterone-induced cardiovascular/renal damage. To test this hypothesis, wild type (WT) and striatin heterozygous knockout (Strn+/−) littermate male mice were fed a liberal sodium (1.6% Na+) diet and randomized to either protocol one: 3 weeks of treatment with either vehicle or aldosterone plus/minus MR antagonists, eplerenone or esaxerenone or protocol two: 2 weeks of treatment with either vehicle or L-NAME/AngII plus/minus MR antagonists, spironolactone or esaxerenone. Compared to the WT mice, basally, the Strn+/− mice had greater (~26%) estimated renal glomeruli volume and reduced non-genomic second messenger signaling (pAkt/Akt ratio) in kidney tissue. In response to active treatment, the striatin-associated-cardiovascular/renal damage was limited to volume effects induced by aldosterone infusion: significantly increased blood pressure (BP) and albuminuria. In contrast, with aldosterone or L-NAME/AngII treatment, striatin deficiency did not modify aldosterone-mediated damage: in the heart and kidney, macrophage infiltration, and increases in aldosterone-induced biomarkers of injury. All changes were near-normalized following MR blockade with spironolactone or esaxerenone, except increased BP in the L-NAME/AngII model. In conclusion, the loss of striatin amplified aldosterone-induced damage suggesting that aldosterone’s non-genomic pathway is protective but only related to effects likely mediated via epithelial, but not non-epithelial cells.
Is Autogenous cortical bone sheet reliable for the management of defects around dental implants by using scalpel technique?
Authors: BAYRAM Burak
Published: March 2020

Background: The aim of this study is to present a very easy technique for coverage of dehiscence and fenestration defects around the dental implantsfrom the nearest bone source by using a sharp scalpel and the analysis of its clinical results.Materials and Methods:750 screw dental implants were inserted by the same surgeon. Exactly 112 of the (15%) implants had dehiscence defects and 23 of them (3 %) had fenestration defects. A bone sheet was obtained from the nearest available cortical bone for covering a bone defect around an implant by using a new no: 15 scalpel. Survival rates of implants were evaluated.Results:One hundred and thirty-five exposed implant surfaces were augmented with autogenous bone, harvested by scalpel technique. The survival rate of these implants was 100% with no significant clinical finding.Conclusion:The scalpel technique described in the present study is easy, effective and reliable for the management of dehiscence or fenestration defects of dental implants.Key words: Autogenous bone grafting, defects around dental implants, dental implants
Vejez y ser persona vieja: una aproximación al estado del arte de la cuestión
Authors: Robledo Marín Carlos Arturo , Orejuela Johnny Javier
Published: March 2020

A continuación se presenta una aproximación al estado actual de investigaciones relacionadas con la vejez y ser persona vieja. Para lograrlo se revisó sistemáticamente un amplio conjunto de referencias para dar cuenta de los aspectos más destacados, a saber, propósito general, referentes conceptuales, tipos de diseño, tipos de estudio, sujetos participantes, técnicas de recolección de la información, resultados, conclusiones y recomendaciones. Posteriormente, se analizó en Colombia, durante los años 2008-2018, la formación universitaria existente, es decir, trabajos de grado de pregrado, especialización, maestría y doctorado y la producción escrita en libros. Además de los eventos académicos realizados durante los años 2014 – 2018 que permitan dar cuenta del estado actual de los estudios sobre la vejez y ser persona vieja desde una perspectiva interdisciplinaria.