bluuebunny/crossref_metadata_2025 huggingface dataset:
Hybrid Optimization Strategy for Optimal Location and Sizing of DG in Distribution Networks
Authors: Gil-González Walter , Montoya Oscar Danilo , Grisales-Noreña Luis Fernando , Ramírez Vanegas Carlos Alberto , Molina Cabrera Alexander
Published: December 2020

Objective: In this paper, is present a hybrid optimization methodology for the optimal location and sizing of distributed generators (DGs) in electrical distribution networks. We propose a mixed-integer nonlinear problem (MINLP) model for the mathematical formulation, whose objective function is the minimization of power losses due to the Joule effect in conductors. The constraints we considered include active and reactive power balance, voltage regulation, percentage of penetration of DGs into the distribution network, and total DGs allowed in such network.

Methodology: To solve the MINLP model, we employed a master–slave strategy that uses the Chu-Beasley genetic algorithm (CBGA) and the optimal power flow (OPF) model as the master and slave algorithms, respectively. This hybrid technique helps to reduce the complexity of the MINLP model by eliminating binary variables through the master algorithm and then solving the resulting Nonlinear problem (NLP), which corresponds to the OPF model, using a classical interior-point method available in MATLAB’s fmincon toolbox.

Results: We tested the efficiency and robustness of the proposed methodology in 33- and 69-node radial distribution networks. The results show its high performance in terms of power loss reduction and final sizing of DGs

Conclusions: The results obtained in the test systems under analysis reveal that there is a direct and proportional relationship between technical losses, the percentage of distributed generation penetration, and the number of generators available.
Fusion of Hyperspectral and Multispectral Images Based on a Centralized Non-local Sparsity Model of Abundance Maps
Authors: Vargas Edwin , Arias Kevin , Rojas Fernando , Arguello Henry
Published: December 2020

Objective: Hyperspectral (HS) imaging systems are commonly used in a diverse range of applications that involve detection and classification tasks. However, the low spatial resolution of hyperspectral images may limit the performance of the involved tasks in such applications. In the last years, fusing the information of an HS image with high spatial resolution multispectral (MS) or panchromatic (PAN) images has been widely studied to enhance the spatial resolution. Image fusion has been formulated as an inverse problem whose solution is an HS image which assumed to be sparse in an analytic or learned dictionary. This work proposes a non-local centralized sparse representation model on a set of learned dictionaries in order to regularize the conventional fusion problem.Methodology: The dictionaries are learned from the estimated abundance data taking advantage of the depth correlation between abundance maps and the non-local self- similarity over the spatial domain. Then, conditionally on these dictionaries, the fusion problem is solved by an alternating iterative numerical algorithm.Results: Experimental results with real data show that the proposed method outperforms the state-of-the-art methods under different quantitative assessments.Conclusions: In this work, we propose a hyperspectral and multispectral image fusion method based on a non-local centralized sparse representation on abundance maps. This model allows us to include the non-local redundancy of abundance maps in the fusion problem using spectral unmixing and improve the performance of the sparsity-based fusion approaches.
Review of Geosynthetic-Reinforced Pile-Supported (GRPS) embankments - parametric study and design methods
Authors: Alsirawan Rashad
Published: December 2020

Embankment construction on soft soil may result in excessive settlement, loss of bearing capacity, or sliding instability. However, geosynthetic-reinforced pile-supported (GRPS) embankments offer an effective technique to overcome the problems resulting from soft foundations soils. This paper presents a review of the most important parameters affecting the behaviour of GRPS embankments as well as design methods that estimate tensile forces in the geosynthetic layers and load efficiency. Results highlight the importance of using GRPS embankments, but also reveal the inconsistencies between design methods. Finally, general conclusions about the design and construction of GRPS systems are presented.
Odnos Rominj do reproduktivnega zdravja in do stika z ginekološkimi zdravstvenimi službami
Authors: Logar Čuček Marjeta
Published: December 2020

Uvod: O reproduktivnem zdravju Rominj, žensk s svojstvenim načinom življenja v posebnih skupnostnih razmerah in z njim lastnimi navadami, je v Sloveniji malo znanega. Namen raziskave je bil prepoznati stališča Rominj do  reproduktivnega zdravja in okoliščine dostopnosti ter obiska ustreznih zdravstvenih služb na primarni ravni.Metode: Uporabljena je bila opisna kvalitativna metoda. Vzorec je bil namenski. Od 61 povabljenih je sodelovalo 44 polnoletnih Rominj, in sicer od maja 2014 do februarja 2015. Podatki so bili zbrani s tehniko delno strukturiranega intervjuja in analizirani s kvalitativno analizo vsebine.Rezultati: Izdvojenih je bilo 18 kategorij, združenih v 7 tem: (1) skrb za zdravje, (2) stališča o reproduktivnem zdravju, (3) stališča o zdravstveni oskrbi v dispanzerju za ženske, (4) dejavniki, ki vplivajo na dostopnost do zdravstvenih služb, (5) odnosi v zdravstvenih obravnavah, (6) preventiva, (7) izobraževalni programi za romske ženske na področju reproduktivnega zdravja.Diskusija in zaključek: Rominje si želijo stikov z zdravstvenimi službami, enakovrednega pristopa pri obravnavi in predvsem zdravja. Zaznana je potreba po izobraževanju, strokovnih nasvetih, predavanjih in delavnicah s področja reproduktivnega zdravja. Razvojne priložnosti se nakazujejo s pomočjo ozaveščanja o možnostih dostopa do reproduktivnih storitev in obravnave, ki jih ponujajo zdravstvene službe, vključevanja Rominj v zdravstvenovzgojne programe ob upoštevanju njihove kulture in tradicije.
Importance of play therapy in social work practice with children
Authors: Kılıç Ceyhan Esra
Published: December 2020

If we can find ways to hear and understand children, they have a lot to say, tell and teach us, adults. Children who do not have extensive verbal abilities like adults can express themselves through playing. It has been proven by research that the best method by which they can convey their feelings, thoughts and problems is play therapy. At this point, it is important that professionals working with children are equipped with the knowledge of play therapy. Social workers who frequently come into contact with children in their professional lives should be involved in the field as play therapy practitioners. However, when the literature is examined, it is seen that there are very few practices and studies on the subject in Turkey. This study presents the place and importance of play therapy in social work practice with children in the light of the researches and applications in the literature, and highlights the importance of the use of play therapy as a method by social workers working with children. It has been observed that play therapy needs a wider coverage in social work practice and research. Suggestions have been made for popularizing play therapy in the relevant social work education, research and practices.

​Extended English summary is in the end of Full Text PDF (TURKISH) file.

 

Özet

 

Çocukları duymaya, anlamaya ilişkin yollar bulanabilirse, onların yetişkinlere söyleyecekleri, anlatacakları, öğretecekleri çok şey vardır. Yetişkinler gibi geniş sözel yeteneklere sahip olmayan çocuklar kendilerini oyun yoluyla ifade edebilmektedirler. Onların duygularını, düşüncelerini, sorunlarını aktarabilecekleri en iyi yöntemin oyun terapisi olduğu araştırmalarla kanıtlanmıştır. Bu noktada çocuklarla çalışan profesyonellerin oyun terapisiyle ilgili bir donanıma sahip olması önem arz etmektedir. Mesleki yaşamlarında sıkça çocuklara temas eden sosyal hizmet uzmanları, oyun terapisi uygulayıcısı olarak alanda yer almalıdır. Ancak alan yazın incelendiğinde konuyla ilgili ülkemizdeki uygulama ve çalışmaların çok az sayıda olduğu görülmüştür. Çocuklarla sosyal hizmet uygulamasında oyun terapisinin yeri ve öneminin literatürdeki araştırmalar ve uygulamalar ışığında sunulduğu bu çalışmada, çocuklarla çalışan sosyal hizmet uzmanlarının oyun terapisini bir yöntem olarak kullanmalarının önemine dikkat çekilmiştir. Oyun terapisinin sosyal hizmet uygulama ve araştırmalarında daha geniş yer almaya ihtiyacı olduğu görülmüştür. Konuyla ilgili sosyal hizmet eğitim, araştırma ve uygulamalarında oyun terapisinin yaygınlaştırılması için önerilerde bulunulmuştur.
BIOMIMIKRI GERAK ADAPTIF TUMBUHAN MIMOSA SEBAGAI FASAD KINETIK
Authors: Anandhita Gustav
Published: December 2020

Biomimikri merupakan metode penyelesaian masalah dengan menduplikasi desain, proses dan perilaku mahluk hidup di alam.  Pada penelitian ini proses biomimikri mengambil inspirasi dari tumbuhan genus Mimosa dari keluarga Fabaceae, yang memiliki karakteristik daun yang dapat mengatup atau yang disebut sebagai gerak niktinasti. Penelitian ini bertujuan memperoleh desain arsitektural fasad bangunan dan mengetahui kemampuannya dalam mereduksi tingkat radiasi pada kulit bangunan.  . Untuk mencapai tujuan tersebut, metode penelitian menggunakan mix-methods dari biomimicry thinking. Pertama, penelitian terhadap karakteristik bentuk, respon tumbuhan terhadap suhu serta cahaya, dan mekanisme gerak buka tutup daun tumbuhan genus Mimosa. Kedua, melakukan reinterpretasi desain tumbuhan Mimosa sebagai fasad kinetik menggunakan metode generative model menggunakan GH+Rhino. Ketiga, membuat simulasi untuk analisis radiasi matahari menggunakan Ladybug untuk mengetahui efek dari mekanisme buka tutup fasad kinetik tersebut terhadap nilai radiasi total yang diterima bangunan . Dari hasil analisis diketahui bahwa kinerja fasad kinetik tersebut mampu mengurangi radiasi matahari pada bangunan sampai dengan 26.3%.
Patroni ulic i placów w miasteczku akademickim Uniwersytetu Warmińsko-Mazurskiego w Kortowie
Authors: Joanna Maria Garbula Joanna Maria Garbula
Published: December 2020

This article revolves around the memory of a site, i.e. the past captured in sources, reported memories of witnesses of events and symbols. The examples of such places of memory examined here are the streets and squares on the UWM Kortowo campus. They consist of references to the past which has significance for contemporary times. The article consists of an introduction and two chapters. The introduction presents the rich history of Kortowo, spanning several centuries from the Old Prussian settlements to the establishment of the University of Warmia and Masuria in Olsztyn. Chapter 1 is dedicated to the history of the streets and squares on the Kortowo campus from the time when, to make the academic community’s life easier, the university authorities gave names to the streets on the campus, following the specific faculties’ suggestions. The streets were named after M. Oczapowski (an agronomist, theorist of agriculture, pioneer of agricultural experimentation), R. Prawocheński (an expert in animal husbandry), J. Licznerski (a pioneer of modern dairy science), K. Obitz (Doctor of veterinary medicine, a journalist, a social activist in Masuria), J. Hevelius (an astronomer from Gdansk), B. Dybowski (a biologist and traveller), C. Kanafojski (Professor of automation in agriculture). Chapter 2 presents short biographies of three of the seven street patrons: B. Dybowski, K. Obitz and R. Prawocheński, who are the most characteristic and multi-dimensional figures. The names of the streets reflect the memory of the scientific, social and personal achievements of these individuals, at the same time justifying their selection as patrons.
Instytucjonalizacja pedagogiki w okresie Drugiej Rzeczypospolitej na przykładzie Katedry Pedagogiki i Dydaktyki Wszechnicy Piastowskiej
Authors: Nowak-Kluczyński Konrad
Published: December 2020

The Second Polish Republic was a time of institutionalising and imposing stricter discipline in teaching in Poland. In the Interwar Period, institutions were established for teacher training, accompanied by new bodies in Polish universities tasked with teacher training and developing teaching methodology. A case in point was the establishment of the Faculty of Pedagogy and Didactics in Wszechnica Piastowska (Adam Mickiewicz University in Poznań). The first Faculty heads: Antoni Danysz, Bogdan Nawroczyński and Ludwik Jax-Bykowski, made considerable efforts for teacher training to play an important role in the structure of the Poznań University and to assume academic form. While the Faculty was closed down in 1933, Poznań University continued its cooperation with the Faculty of Psychology, thus providing an opportunity for educating future teachers.
Regularity for commutators of the local multilinear fractional maximal operators
Authors: Zhang Xiao , Liu Feng
Published: December 2020

In this paper we introduce and study the commutators of the local multilinear fractional maximal operators and a vector-valued function b⃗ = (b
1, …, bm
). Under the condition that each bi
belongs to the first order Sobolev spaces, the bounds for the above commutators are established on the first order Sobolev spaces.
Ἀρχή and δῖνος: Vortices as Cosmogonic Powers and Cosmic Regulators. Study Case: The Whirling Lightning Bolt of Zeus
Authors: Bonnechere Pierre , Cursaru Gabriela
Published: December 2020

In the cosmogonic and eschatological narratives of the origin and end of the world, both in some early myths and in the Presocratics’ systems, the vortex and other spinning motifs act as necessary agents of both order and disorder. Their rapidity induces a separation of opposites, and they jointly cause the resulting masses to move towards their “appropriate” place in the universe and thus produce a constant pendulum between multiplicity and unity. Furthermore, vortices appear to be the cosmic agents of the divine will, and they constantly regulate divine law and justice. Every time the cosmic order they have established is threatened, the Olympians punish the hubristic wrongdoers and protect the equilibrium of the world, using their attributes – e. g., the trident, the kerykeion, or the thyrsus – which often feature whirling shapes, movements, and patterns. The best example is Zeus’ thunderbolt, which is described as a whirling weapon from Hesiod to Nonnos, evoking the tempestuous force and cosmic energy of its origins. Far from being incidental, the vortex was clearly at the centre of the Greek conception of the entire cosmos, from the rotation of the planets to the whirling winds and the tumultuous or serpentine rivers, to the symposium and everyday life, even to turmoil and other spinning inner emotional states.
LncRNA SNHG15 contributes to doxorubicin resistance of osteosarcoma cells through targeting the miR-381-3p/GFRA1 axis
Authors: Zhang Jinshan , Rao Dan , Ma Haibo , Kong Defeng , Xu Xiaoming , Lu Hougen
Published: December 2020

Background

Osteosarcoma is a common primary malignant bone cancer. Long noncoding RNA small nucleolar RNA host gene 15 (SNHG15) has been reported to play an oncogenic role in many cancers. Nevertheless, the role of SNHG15 in the doxorubicin (DXR) resistance of osteosarcoma cells has not been fully addressed.

Methods

Cell Counting Kit-8 assay was conducted to measure the half-maximal inhibitory concentration value of DXR in osteosarcoma cells. Western blotting was carried out to examine the levels of autophagy-related proteins and GDNF family receptor alpha-1 (GFRA1). Quantitative reverse transcription-polymerase chain reaction was performed to determine the levels of SNHG15, miR-381-3p, and GFRA1. The proliferation of osteosarcoma cells was measured by MTT assay. The binding sites between miR-381-3p and SNHG15 or GFRA1 were predicted by Starbase bioinformatics software, and the interaction was confirmed by dual-luciferase reporter assay. Murine xenograft model was established to validate the function of SNHG15 in vivo.

Results

Autophagy inhibitor 3-methyladenine sensitized DXR-resistant osteosarcoma cell lines to DXR. SNHG15 was upregulated in DXR-resistant osteosarcoma tissues and cell lines. SNHG15 knockdown inhibited the proliferation, DXR resistance, and autophagy of osteosarcoma cells. MiR-381-3p was a direct target of SNHG15, and GFRA1 bound to miR-381-3p in osteosarcoma cells. SNHG15 contributed to DXR resistance through the miR-381-3p/GFRA1 axis in vitro. SNHG15 depletion contributed to the inhibitory effect of DXR on osteosarcoma tumor growth through the miR-381-3p/GFRA1 axis in vivo.

Conclusions

SNHG15 enhanced the DXR resistance of osteosarcoma cells through elevating the autophagy via targeting the miR-381-3p/GFRA1 axis. Restoration of miR-381-3p expression might be an underlying therapeutic strategy to overcome the DXR resistance of osteosarcoma.
Effects of ageing on the surface characteristics and Cu(ii) adsorption behaviour of rice husk biochar in soil
Authors: Huang Zhaoqin , Hu Linchao , Dai Jingyu
Published: December 2020

The properties of rice husk biochar during the ageing process in soil and the resulting impacts on sorption capacity with respect to Cu(ii) were assessed. Rice husk-derived biochar was placed in fabric bags and buried in a plastic incubator filled with soil for 0–240 d. The aged biochar was then characterised and its sorption capacity compared with control (unaged) biochar in batch sorption experiments. The structural composition and morphology of the biochar before and after ageing were analysed based on element composition, scanning electron microscopy (SEM) coupled with energy X-ray dispersive spectroscopy (EDS), diffuse reflectance infrared Fourier transform infrared spectroscopy (DRIFTS), and X-ray photoelectron spectroscopy (XPS). The concentration of O, atomic O/C ratios, and carboxyl and hydroxyl functional groups increased at the surface of the biochar during ageing, which together indicated oxidation. Within the biochar particles, O/C ratios progressively increased towards their outer surfaces. Furthermore, ageing for more than 120 d facilitated Cu(ii) sorption as oxygen-containing groups were able to develop. The maximum adsorption capacity (qm) of biochar increased by 1.24 ∼ 1.32 times after ageing in the soil for 240 d. It is suggested that biochar surface properties were gradually altered during environmental exposure and the aged rice husk biochar showed increased performance in Cu(ii) adsorption. However, the performance of aged biochar as a soil remediator or conditioner will be affected by the ageing process and interactions among different soil components. As such, further research is required to evaluate these complex effects.
On the Energy Stable Approximation of Hamiltonian and Gradient Systems
Authors: Egger Herbert , Habrich Oliver , Shashkov Vsevolod
Published: December 2020

A general framework for the numerical approximation of evolution problems is presented that allows to preserve an underlying dissipative Hamiltonian or gradient structure exactly.
The approach relies on rewriting the evolution problem in a particular form that complies with the underlying geometric structure.
The Galerkin approximation of a corresponding variational formulation in space then automatically preserves this structure which allows to deduce important properties for appropriate discretization schemes including projection based model order reduction.
We further show that the underlying structure is preserved also under time discretization by a Petrov–Galerkin approach.
The presented framework is rather general and allows the numerical approximation of a wide range of applications, including nonlinear partial differential equations and port-Hamiltonian systems.
Some examples will be discussed for illustration of our theoretical results, and connections to other discretization approaches will be highlighted.
One-dimensional constrained inversion study of TEM and application in coal goafs’ detection
Authors: Yuanlei Si , Maofei Li , Yaoning Liu , Weihong Guo
Published: December 2020

Transient electromagnetic method (TEM) is often used in urban underground space exploration and field geological resource detection. Inversion is the most important step in data interpretation. Because of the volume effect of the TEM, the inversion results are usually multi-solvable. To reduce the multi-solvability of inversion, the constrained inversion of TEM has been studied using the least squares method. The inversion trials were performed using two three-layer theoretical geological models and one four-layer theoretical geological model. The results show that one-dimensional least squares constrained inversion is faster and more effective than unconstrained inversion. The induced electromotive force attenuation curves of the inversion model indicate that the same attenuation curve may be used for different geological conditions. Therefore, constrained inversion using known geological information can more accurately reflect the underground geological information.
Esterification of glycerol with acetic acid using a sulfonated polyphenylene sulfide non-woven fabric as a catalyst
Authors: Li Xueyang , Zhang Jiao , Song Yunfei , Ji Yanhong , Younas Mohammad , He Benqiao
Published: December 2020

In this work, the esterification of glycerol with acetic acid (HOAc) was investigated under sulfonated polyphenylene sulfide non-woven fabric (SPSF) as a solid catalyst. The effects of the amount of catalyst, reaction temperature, molar ratio of glycerol to HOAc and the reaction time on the esterification were studied in detail. It was found that SPSF has good catalytic activity and stability. Under the reaction conditions of the molar ratio of glycerol/HOAc of 1:6 (glycerol 0.1 mol), the reaction temperature of 110 °C, the amount of catalyst of 3 g, and the reaction time of 2 h, the glycerol conversion and the selectivity to diacetin (DAG) reached upto 96 and 56.1%, respectively. Reusability test of SPSF showed that no significant declination in the glycerol conversion and the selectivity was observed after five reaction cycles. The experimental results proved the esterification of glycerol with HOAc by SPSF a promising and green process.
Wavelet-optimized compact finite difference method for convection–diffusion equations
Authors: Mehra Mani , Patel Kuldip Singh , Shukla Ankita
Published: December 2020

In this article, compact finite difference approximations for first and second derivatives on the non-uniform grid are discussed. The construction of diffusion wavelets using compact finite difference approximation is presented. Adaptive grids are obtained for non-smooth functions in one and two dimensions using diffusion wavelets. High-order accurate wavelet-optimized compact finite difference (WOCFD) method is developed to solve convection–diffusion equations in one and two dimensions on an adaptive grid. As an application in option pricing, the solution of Black–Scholes partial differential equation (PDE) for pricing barrier options is obtained using the proposed WOCFD method. Numerical illustrations are presented to explain the nature of adaptive grids for each case.
Rice husk as a fibre in composites: A review
Authors: Bisht Neeraj , Gope Prakash Chandra , Rani Nisha
Published: December 2020

In the last decade due to ever growing environmental concerns, use of natural fibres as fibre materials has gained momentum and acceptance. Natural fibres provide advantage of being economical and environment friendly at the same time. Rice husk, an agricultural waste is being utilized as a natural fibre for development of bio-composites. Present paper attempts to understand the applicability of rice husk as a fibre with various polymers based on the recent research works. It also throws light on various modification techniques that can further enhance the associated mechanical properties by altering the chemical and physical properties of husk. The paper may assist in understanding the phenomenon associated in manufacture of rice husk based bio-composite and provide a critical insight to the future applications of rice husk.
Form variation of pronominal it-clefts in written English
Authors: Bevacqua Luca , Scheffler Tatjana
Published: December 2020

Clefts are well-studied as a construction which induces emphasis on its clefted referent. However, little is known about the distribution of different stylistic forms of it-cleft variants. We report on a corpus study mining data from Twitter, targeting sentences clefting a pronoun in English. We examine the following features: case and syntactic role of the clefted pronoun, contraction of the copula, choice of complementiser and use of emphasis markers. The results show systematic associations between these features. A further comparison between the Twitter dataset and data from iWeb, a corpus of general-use web language, shows significant differences in levels of emphasis and formality, positioning Twitter language in the middle of the conceptual orality spectrum.
On the determination of the number of positive and negative polynomial zeros and their isolation
Authors: Prodanov Emil M.
Published: December 2020

A novel method with two variations is proposed with which the number of positive and negative zeros of a polynomial with real coefficients and degree n can be restricted with significantly better determinacy than that provided by the Descartes rule of signs. The method also allows the isolation of the zeros of the polynomial quite successfully, and the determined root bounds are significantly narrower than the Cauchy and the Lagrange bounds. The method relies on solving equations of degree smaller than that of the given polynomial. One can determine analytically the exact number of positive and negative zeros of a polynomial of degree up to and including five and also fully isolate the zeros of the polynomial analytically, and with one of the variations of the method, one can analytically approach polynomials of degree up to and including nine by solving equations of degree not more than four. For polynomials of higher degree, either of the two variations of the method should be applied recursively. Numerous examples are given. Presented is the full classification of the roots of the cubic equation, together with their isolation intervals – especially important for various scientific models for which the coefficients of the equation might be functions of the model parameters. An application of the method to a quartic equation with variable coefficients (resulting from the study of wave–current interactions in the physically realistic model of azimuthal two-dimensional non-viscous flows with piecewise constant vorticity in a two-layer fluid with a flat bed and a free surface) has been demonstrated. A step-by-step algorithm for each version of the method has also been presented.
The Rural Labor Transfer with Respect to the Development of Farmland Leasing Market: Evidence from Rural China
Authors: Zhang Weikun , Liang Hanyuan , Chen Zhe , Zhang Jun
Published: December 2020

Since relaxing policy control for farmland leasing, rural labor transfer also arises. The paper estimates the relationship between farmland leasing market and rural labor transfer based on a Double Hurdle Model with the survey data collected from 2793 households in rural China. Results show that the farmland leasing-in scale restrains rural labor transfer mainly in the full-time movement by stimulating the behavior of farmers to plant rice, whereas farmland leasing-out scale, compared to farmland leasing-in scale has an opposite effect on labor transfer, and performs this effect by increasing the likelihood of the desired degree for rural households to do urban business. Specifically, we also find the underlying channels such as the farmers’ desire to the agricultural investment and the Dipiao-ticket transaction through which farmland leasing-in or -out scale affects labor transfer separately. We further find a negative effect of farmland leasing-in scale on household savings and a positive effect of farmland leasing-out scale on that mainly evidently in the group of rural labor transfer. Moreover, farmland leasing-out scale has no significantly influence on the urban life worry of farmers, does not let farmers worry about their urban housing, and does worry about their children’s education. Our study has a deep policy implication on social planners in China to strengthen the systems of the farmland leasing and rural labor transfer.
GPR37 promotes the malignancy of lung adenocarcinoma via TGF-β/Smad pathway
Authors: Wang Jian , Xu Min , Li Dan-Dan , Abudukelimu Wujikenayi , Zhou Xiu-Hong
Published: December 2020

This paper aimed to research the function and in-depth mechanism of GPR37 in lung adenocarcinoma (LUAD). Herein, based on TCGA and Oncomine databases, we revealed that GPR37 was expressed at high levels in LUAD, and upregulation of GPR37 was related to the poor outcomes. Furthermore, biological function experiments in vitro were utilized to assess whether GPR37 impacts malignant phenotype of LUAD cells. Gain- or loss-of-function assays indicated that the upregulation of GPR37 contributed to improving the proliferation, migration, and invasion of LUAD cells in vitro, while knockdown of GPR37 can inhibit the malignant biological behaviors. Then, we found that depletion of GPR37 resulted in a decrease in the expression of TGF-β1 as well as the extents of Smad2 and Smad3 phosphorylation, while overexpression of GPR37 presented opposite outcomes. Altogether, our findings indicated that GPR37 is a potential oncogene of LUAD, and its promoting effects on the malignant progression of LUAD may be realized via TGF-β/Smad pathway.
Problematizing enterprise culture in global academic publishing: Linguistic entrepreneurship through the lens of two Chinese visiting scholars in a U.S. university
Authors: Li Wendy , De Costa Peter I.
Published: December 2020

The global spread of English has made it the dominant language in academic publishing (Hyland, Ken. 2015. Academic Publishing: Issues and Challenges in the Construction of Knowledge. Oxford: Oxford University Press). Influenced by enterprise culture, scholars from peripheral non-Western countries face mounting pressure to publish in English (Curry, Marry Jane & Theresa Lillis (eds.). 2017. Global academic publishing: Policies, perspectives and pedagogies. Bristol, UK: Multilingual matters). The English academic publishing industry has also ballooned in China (Tian, Mei, Yan Su & Xin Ru. 2016. Perish or publish in China: Pressures on young Chinese scholars to publish in internationally indexed journals. Publications 4(2). 9.). In response to the Chinese government’s commitment to developing world-class universities and disciplines to enhance the internationalization of its higher education system, local Chinese scholars are increasingly encouraged to produce research that has international impact, as well as to engage in international academic exchange and cooperation arrangements (Li, Yongyan & Guangwei Hu. 2018. Collaborating with management academics in a new economy: Benefits and challenges. Publications 6. 1–17). In seeking academic collaboration, a growing number of Chinese academics have participated in visiting scholar programs offered by western-based universities. In light of this emergent phenomenon, this study explores how Chinese visiting scholars, driven by an ethical imperative to enhance human capital at “neoliberal universities” (Holborow, Marnie. 2013. Applied linguistics in the neoliberal university: Ideological keywords and social agency. Applied Linguistics Review 4(2). 229–257), exploited language-related resources available to them to succeed in English academic publishing. Data, which include in-depth interviews, social media posts, journals, resumes and manuscripts that were in press at academic journals, were collected from two Chinese professors who took part in a one-year visiting scholar program in the U.S. university. Our findings revealed that under the mounting expectations to publish in English-dominated SSCI journals, our focal participants enacted linguistic entrepreneurial practices.
Selective addition of C-PVAm to improve dry strength of TMP mixed tissue paper
Authors: Seo Jin Ho , Lee Kwang Seob , Lee Tae Joo , Ryu Jeong Yong
Published: December 2020

During the manufacture of low basis weight tissue paper, it is difficult to efficiently use the dry strength agent (DSA) because a large amount of DSA adsorbed fines releases in forming roll by centrifugal forces. In this study, cationic polyvinylamine (C-PVAm) was used as a DSA in an environment where the retention of fines was weak. Addition of C-PVAm to the thermomechanical pulp (TMP) or TMP mixed with softwood bleached kraft pulp (SwBKP) improved the turbidity of filtrate from sheet former, however, the strength of handsheet paper was similar to that without C-PVAm. When C-PVAm was selectively added to SwBKP as much as 4 %, the tensile index could be improved by approximately 10.6 % without changing the retention of fines. In addition, C-PVAm added before the beating of SwBKP showed better results than C-PVAm added after the beating in terms of fines retention, tensile index, and formation. In particular, the tensile index was improved about 7.7 % by adding of C-PVAm 4 % as is before beating of SwBKP. Consequently, it was found that C-PVAm with a high reaction rate can be added before beating of SwBKP to improve the physical strength.
Scalable fabrication of carbon materials based silicon rubber for highly stretchable e-textile sensor
Authors: Li Xinlin , Wang Rixuan , Wang Leilei , Li Aizhen , Tang Xiaowu , Choi Jungwook , Zhang Pengfei , Jin Ming Liang , Joo Sang Woo
Published: December 2020

Development of stretchable wearable devices requires essential materials with high level of mechanical and electrical properties as well as scalability. Recently, silicone rubber-based elastic polymers with incorporated conductive fillers (metal particles, carbon nanomaterials, etc.) have been shown to the most promising materials for enabling both high electrical performance and stretchability, but the technology to make materials in scalable fabrication is still lacking. Here, we propose a facile method for fabricating a wearable device by directly coating essential electrical material on fabrics. The optimized material is implemented by the noncovalent association of multiwalled carbon nanotube (MWCNT), carbon black (CB), and silicon rubber (SR). The e-textile sensor has the highest gauge factor (GF) up to 34.38 when subjected to 40% strain for 5,000 cycles, without any degradation. In particular, the fabric sensor is fully operational even after being immersed in water for 10 days or stirred at room temperature for 8 hours. Our study provides a general platform for incorporating other stretchable elastic materials, enabling the future development of the smart clothing manufacturing.
Improving flexural and dielectric properties of carbon fiber epoxy composite laminates reinforced with carbon nanotubes interlayer using electrospray deposition
Authors: Zakaria Muhammad Razlan , Akil Hazizan Md , Omar Mohd Firdaus , Abdullah Mohd Mustafa Al Bakri , Rahman Aslina Anjang Ab , Othman Muhammad Bisyrul Hafi
Published: December 2020

The electrospray deposition method was used to deposit carbon nanotubes (CNT) onto the surfaces of woven carbon fiber (CF) to produce woven hybrid carbon fiber–carbon nanotubes (CF–CNT). Extreme high-resolution field emission scanning electron microscopy (XHR-FESEM), X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared spectroscopy (FT-IR) were used to analyze the woven hybrid CF–CNT. The results demonstrated that CNT was successfully and homogenously distributed on the woven CF surface. Woven hybrid CF–CNT epoxy composite laminates were then prepared and compared with woven CF epoxy composite laminates in terms of their flexural and dielectric properties. The results indicated that the flexural strength, flexural modulus and dielectric constant of the woven hybrid CF–CNT epoxy composite laminates were improved up to 19, 27 and 25%, respectively, compared with the woven CF epoxy composite laminates.
Valence orientation and psych properties: Toward a typology of the psych alternation
Authors: Rott Julian A. , Verhoeven Elisabeth , Fritz-Huechante Paola
Published: December 2020

Languages differ with respect to the morphological structure of their verbal inventory: some languages predominantly derive intransitive experiencer-subject verbs from more basic transitive experiencer-object verbs by morphosyntactic operations such as stative passivization (e.g., German, English), reflexivization (e.g., German, Spanish), or mediopassive voice (e.g., Greek, Icelandic). Other languages apply transitivizing operations of causativization to intransitive basic forms, e.g., via causative affixes (e.g., Turkish, Japanese, Yucatec Maya) or embedding under causative predicates (e.g., Korean, Chinese). Yet other languages derive both alternants from a common base (e.g., Hungarian, Cabécar). This classification is especially pertinent when applied to psych verbs, given that variable linking is a widely recognized characteristic of this domain. The valence orientation profile of a language’s psych domain has recently been linked to the presence or absence of noncanonical syntax, another well-known property of psych predicates. This article reports results from an ongoing study which aims to test this observation on a larger typological scale, presenting comparative empirical data on the interplay of morphology and syntax in the psych domains of Icelandic, Spanish, Korean, Chinese, Yucatec Maya, Finnish, Turkish, and Bété.
Principles of radiation therapy
Authors: Winiecki Janusz
Published: December 2020

Introduction

Radiotherapy is one of the basic methods of cancer treatment. Tens of millions of people around the world are exposed to ionizing radiation each year in the hope that it will help fight the disease or slow down its progress. Radiotherapy owes its success mainly to important discoveries in the field of physics, which allowed to understand the essence of the interaction of ionizing radiation with matter, in particular living matter.

Materials

The following study explains which types of radiation have the ability to ionize matter. The difference between the interaction of electrically charged particles and neutral particles was explained. The author briefly described methods of delivering radiation to diseased tissues and how adjacent tissues are protected. The most important physical quantities describing the quality and dose of the delivered radiation were introduced.

Conclusions

Safe use of radiotherapy as one of the methods of oncological treatment requires proficient knowledge of the basics of radiobiology and the physics of nuclear interactions. The study describes the most important steps in the preparation and implementation of radiotherapy, but it is not sufficient to fully understand this method. However, it provides an opportunity to be familiar with the issue in general.
Early life stress and brain plasticity: from molecular alterations to aberrant memory and behavior
Authors: Lopatina Olga L. , Panina Yulia A. , Malinovskaya Natalia A. , Salmina Alla B.
Published: December 2020

Early life stress (ELS) is one of the most critical factors that could modify brain plasticity, memory and learning abilities, behavioral reactions, and emotional response in adulthood leading to development of different mental disorders. Prenatal and early postnatal periods appear to be the most sensitive periods of brain development in mammals, thereby action of various factors at these stages of brain development might result in neurodegeneration, memory impairment, and mood disorders at later periods of life. Deciphering the processes underlying aberrant neurogenesis, synaptogenesis, and cerebral angiogenesis as well as deeper understanding the effects of ELS on brain development will provide novel approaches to prevent or to cure psychiatric and neurological deficits caused by stressful conditions at the earliest stages of ontogenesis. Neuropeptide oxytocin serves as an amnesic, anti-stress, pro-angiogenic, and neurogenesis-controlling molecule contributing to dramatic changes in brain plasticity in ELS. In the current review, we summarize recent data on molecular mechanisms of ELS-driven changes in brain plasticity with the particular focus on oxytocin-mediated effects on neurogenesis and angiogenesis, memory establishment, and forgetting.
Povećanje brzine oslobađanja lurasidon-hidroklorida iz raspadljivih tableta za usta primjenom liofilizacije
Authors: Skočibušić Josipa , Barbarić Joško , Žižek Krunoslav
Published: December 2020

U ovom radu istražuju se mogućnosti povećanja brzine oslobađanja lurasidon-hidroklorida, antipsihotika druge generacije, pripravom čvrstih disperzija procesom liofilizacije. FTIR, DSC te XRPD ispitivanja provedena su s ciljem detekcije potencijalnih interakcija između lurasidon-hidroklorida i polimernih matrica koje mogu znatno povećati topljivost djelatne tvari i osigurati brže oslobađanje iz dozirnog oblika. Takve čvrste disperzije i pomoćne tvari upotrijebljene su u pripravi tableta čija su vremena raspadanja manja od 3 min. Profili otapanja u laboratorijskom okruženju ukazuju na brže oslobađanje djelatne tvari iz raspadljivih tableta u odnosu na čisti lurasidon-hidroklorid.
Redoks-svojstva ferocenom supstituiranih nukleobaza
Authors: Toma Mateja , Vrček Valerije
Published: December 2020

Pripravljena je serija ferocenom supstituiranih purinskih nukleobaza 1-10 te su izmjereni njihovi redoks-potencijali metodom cikličke voltametrije. Svi ispitani spojevi pokazali su reverzibilnu jednoelektronsku oksidaciju u rasponu potencijala od 330 do 470 mV. Također je uočena razlika redoks-potencijala od 100 mV između N7 i N9 regioizomera ispitivanih nukleobaza. Ispitana je i acelularna aktivnost stvaranja reaktivnih kisikovih vrsta (ROS) kolorimetrijskom metodom s DCFH2-DA te je utvrđeno da konjugati generiraju ROS, dok su ferocen i nukleobaze neaktivni. Različiti supstituenti na purinskom prstenu utječu na stvaranje ROS-a, što omogućuje dizajn biološki aktivnih konjugata ferocena i prikladnih nukleobaza.
Infografía Economia y Humanismo – resultados convocatoria 833 de 2018 de Colciencias (Minciencias)
Authors: Camilo Alejandro Corchuelo Rodriguez , Olga Lucia Ostos Ortiz , Fray Eduardo González Gil
Published: December 2020

La Dirección Nacional de Investigación e Innovación estableció como estrategia de comunicación del conocimiento la divulgación por medio de infografías de los resultados de los grupos de investigación de la universidad en la convocatoria 833 de 2018 de Colciencias (Minciencias). De esta manera, continua la consolidación de productos de apropiación social del conocimiento de todos los grupos de investigación de la Universidad Santo Tomás.
Estudio técnico ambiental comparativo del tratamiento de aguas residuales domésticas para su descarga mediante emisarios en medio marítimo y continental. Caso Cartagena y Barranquilla
Authors: Maryory Bibian Quitian Gutierrez , Lizeth Del Carmen Molina Acosta
Published: December 2020

Por su composición, las aguas residuales domésticas – ARD, generan impactos ambientales que pueden alterar los ecosistemas acuáticos. Estos impactos pueden variar según las características del cuerpo receptor, ocurriendo comportamientos diferentes en cuerpos marítimos y continentales. El cuerpo receptor por lo tanto, determina las características del tratamiento que deben recibir las ARD. Sin embargo, hasta el año 2018, en Colombia solo se establecían los límites permisibles de vertimientos a cuerpos superficiales (continentales) y se consideraban los Objetivos de Calidad de cuerpos receptores específicos. En ese contexto, los sistemas de tratamiento de aguas residuales municipales, en cumplimiento de la Resolución 631 de 2015, no discriminaban el cuerpo receptor, teniendo las mismas características de tratamiento para verter en medio marino y en medio continental. Considerando lo anterior, el siguiente trabajo tiene como objetivo definir los criterios técnicos ambientales que deben ser considerados en el sistema de tratamiento de aguas residuales domésticas de acuerdo a las características del medio receptor. Metodológicamente, se realizó una investigación cualitativa, descriptiva y evaluativa, en la que se analizó el comportamiento del cuerpo receptor, se comparó el sistema de tratamiento de ARD de dos ciudades cuyo vertimiento se realiza en medio continental y marítimo - Barranquilla y Cartagena – mediante emisarios, y se definieron las unidades operacionales requeridas en el tratamiento de aguas residuales según el medio. Se determinó que los parámetros de las ARD de importancia para su vertimiento en medio continental fueron pH, conductividad, oxígeno disuelto, DBO, DQO, SST, SSED, Grasas y Aceites, y Coliformes; mientras que para la descarga en medio marítimo fueron SST, y Grasas y Aceites.
El entrenamiento físico militar es un entrenamiento de alto rendimiento. Una experiencia de investigación en La Escuela Militar de Cadetes General José María Cordova
Authors: Laura Elizabeth Castro Jiménez , Paula Janyn Melo Buitrago
Published: December 2020

El entrenamiento físico militar, conlleva a unas altas exigencias físicas en los sujetos por el tiempo de concentración, por las horas de entrenamiento y la densidad de las actividades. Es decir se puede considerar a esta población como de alto rendimiento por que duran entre 6 meses y más con entrenamiento físico militar diario, por lo que se encuentra asociado, inevitablemente, con la aparición de lesiones, las cuales pueden llevar a procesos de rehabilitación demorados y truncar la vida militar de las personas y generar fallas en la seguridad del país (Olmedilla Zafra, Ortega Toro, & Prieto Andréu, 2009) (Heinrich, Spencer, Fehl, & Poston, 2012). El objetivo de la investigación es conocer las lesiones producto del entrenamiento físico militar en la Escuela Militar de Cadetes General José María Córdova. Metodología. Este estudio es de tipo cuantitativo, de corte descriptivo. Se diseñó una encuesta para conocer las lesiones producto del entrenamiento físico militar. Resultados. Dentro de los resultados se evidencia que muchas de lesiones presentadas son por sobre-entrenamiento y sobreesfuerzo, por parte de los militares al mando o de los mismos cadetes, motivados por sobresalir, tener mejores condiciones al interior de la Escuela o por castigos que en su mayoría son ejercicios físicos por acciones en contra de su reglamento. Conclusiones. Esta es una población que generalmente no se toma en cuenta en el área de la Educación Física por ser la fuerza que protege al país y se desconoce el contexto en que se deben entrenar y las consecuencias de ellos para salir a brindar un servicio al país.