bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Bitslice Implementation of Anderson’s Attack on A5/1
Authors: Bulavintsev Vadim , Semenov Alexander , Zaikin Oleg , Kochemazov Stepan 
Published: March 2018

Abstract
The A5/1 keystream generator is a part of Global System for Mobile Communications (GSM) protocol, employed in cellular networks all over the world. Its cryptographic resistance was extensively analyzed in dozens of papers. However, almost all corresponding methods either employ a specific hardware or require an extensive preprocessing stage and significant amounts of memory. In the present study, a bitslice variant of Anderson’s Attack on A5/1 is implemented. It requires very little computer memory and no preprocessing. Moreover, the attack can be made even more efficient by harnessing the computing power of modern Graphics Processing Units (GPUs). As a result, using commonly available GPUs this method can quite efficiently recover the secret key using only 64 bits of keystream. To test the performance of the implementation, a volunteer computing project was launched. 10 instances of A5/1 cryptanalysis have been successfully solved in this project in a single week.
Novel Two-Dimensional CRLH TL and its Application on Tri-Band Omnidirectional Antenna
Authors: Li Tian-peng , Lei Xue , Dong Huixu , Wen Ke , Gao Jun 
Published: March 2018

Abstract
A new type of two-dimensional composite right/left handed transmission line (2D CRLH TL) is proposed in this letter. Utilizing this structure, an antenna operating on GLONASS and WLAN based on dual zeroth-order resonance (ZOR) mode and first-order resonance (FOR) mode is designed and fabricated. By taking advantage of coaxially center feed and symmetric structure, nearly all omnidirectional radiations in XOY plane at three operating frequencies is obtained. Furthermore, the antenna gain has a high value of −1.27 dB in f1=1.60 GHz, −3.89 dB in f2=2.39 GHz and 0.67 dB in f3=5.12 GHz respectively.
Water Quality, Sediment Characteristics and Benthic Status of the Razim-Sinoie Lagoon System, Romania
Authors: Catianis Irina , Secrieru Dan , Pojar Iulian , Grosu Dumitru , Scrieciu Albert , Pavel Ana Bianca , Vasiliu Dan 
Published: March 2018

AbstractRazim Lake is the biggest of Romania’s freshwater lakes and along with other basins as Golovita, Zmeica and Sinoie constitutes a system of great ecological significance, playing also an essential role in the supply of water for irrigation, fishery exploitation, farming, flood prevention, recreational navigation and water tourism. Due to their importance, the environmental conditions in the Razim - Sinoie coastal lakes have attracted an increased public attention in contemporary society. To assess the levels, dissemination and potential sources of contamination in the above-mentioned lagoon system, random sampling was used to collect water and sediment samples from every lake and several analytical techniques were performed to investigate their environmental characteristics. The results obtained from this study indicated that, in water, concentrations of various physico-chemical parameters are, mostly, in agreement with correlated environmental standards. Slight variations and/or occasional exceeding of the maximum admissible limits were generally limited to small areas showing levels that would not warrant special concern. In sediments, the mean concentrations of some specific trace metals were below the levels of potential effect. Benthic samples revealed 31 taxa belonging to 16 zoo-benthal subdivisions. The results of this study showed good ecological status despite local several natural and anthropogenic stressors as fishery exploitation, farming, recreational navigation and water tourism.
Analysis of the bacterial communities in the waterlogged wooden cultural relics of the Xiaobaijiao No. 1 shipwreck via high-throughput sequencing technology
Authors: Li Qiuxia , Cao Lixiang , Wang Wenfeng , Tan Hongming , Jin Tao , Wang Guangyuan , Lin Guocong , Xu Runlin 
Published: March 2018

Abstract
The microbial impact on waterlogged wooden cultural relics from Xiaobaijiao No. 1 shipwreck was investigated by means of a high-throughput sequencing technology, while the focus was on the composition of prokaryotic microorganisms in 10 wood samples collected from different parts of the shipwreck. A total of 28 501 different operational taxonomic units (OTUs) were obtained based on 97% sequence similarity. The α-diversity index is for the bacterial diversity, which was the highest and the lowest in the samples SS8 and SS5, respectively. Proteobacteria was the largest category of bacterial abundance (47.3%) followed by Bacteroidetes (10%). α-Proteobacteria was the first largest bacteria class with the maximum abundance (21.0%) followed by γ-Proteobacteria (16.9%). Other groups rich in the following species were found: Bacteroidales (13.3%), Thiotrichales (5.0%), Rhodobacterales (4.2%), Rhizobiales (4.0%), Chromatiales (3.5%), Oceanospirillales (3.3%), Flavobacteriales (2.9%) and Sphingomonadales (2.8%). At the level of the bacterial genus, Marinomonas was the most abundant one. Phylogenetic analysis revealed that there are some differences in the composition of bacterial communities from different wood samples. The species number of bacteria in the relics of this shipwreck was far more than that reported in those found in Europe, and in which species composition was similar to the benthic bacteria in the corresponding sea area. The coexistence of anaerobic and aerobic bacteria is remarkable.
Stress Relaxation Behaviour and Creep Constitutive Equations of SA302Gr.C Low-Alloy Steel
Authors: Shen Wenfei , Zhang Chi , Zhang Liwen , Yang Yang , Zhu Zhi 
Published: March 2018

AbstractIn order to study the stress relaxation behaviour of SA302Gr.C low-alloy steel, the stress relaxation experiments were performed at the temperatures of 400, 500 and 620 °C with the constant strain of 0.5 %. Based on the experimental stress relaxation curves, the relationship between creep strain rate and stress were derived and the creep strain rate–stress curves at different temperatures were obtained. Then, the creep constitutive equations at different conditions were developed and the constants in the equations were determined. In order to verify the developed creep constitutive equations, the finite-element (FE) model of stress relaxation of SA302Gr.C low-alloy steel was established with the FE software MSC.Marc. The comparison results show that the simulated stress relaxation curves agree with the experimental ones, which illustrates that the developed creep constitutive equations are appropriate for the tested steel.
An Efficient Method for the Numerical Solution of a Class of Nonlinear Fractional Fredholm Integro-Differential Equations
Authors: Heydari M. H. , Laeli Dastjerdi H. , Nili Ahmadabadi M. 
Published: March 2018

Abstract
We introduce a mesh-free method, i.e., MLS collocation method for the numerical solution of a kind of nonlinear fractional Fredholm integro-differential equation. An error bound is provided for the proposed method which supports its convergence. Detailed numerical experiments approve its excellency in attaining the desired accuracy for a quite low computational cost. We have also compared linear basis with quadratic basis in terms of CPU time.
Using visualisation software to improve student approaches to HE online assessment
Authors: Smith David , Qayyum M. Aslm , Hard Natascha 
Published: March 2018

Abstract
Studying via the Internet using information tools is a common activity for students in higher education. With students accessing their subject material via the Internet, studies have shown that students have difficulty understanding the complete purpose of an assessment which leads to poor information search practices. The selection of relevant information for particular learning assessments is the topic of this paper as it describes a case study that focuses on the information tool use of a small group of participants and is a continuation of similar research studies. The study and discussed research findings point to the benefit of students use of a visualisation tool to provide relevant learning cues and to transition to improved engagement with online assessment.
Zwischen Bild, Schrift und Film
Authors: Badstübner-Kizik Camilla 
Published: March 2018

Zusammenfassung
Der Beitrag befasst sich mit der Beziehung zwischen Multimodalität, Mehrsprachigkeit und dem virtuellen Umfeld von Film als Medium. Filmbezogene multimodale Verbindungen in verschiedenen Sprachen und auf verschiedene Weise zugänglich wie z. B. Filmplakate, Internetadressen oder -Plattformen bzw. Blogs verstärken die wünschenswerte Integration von Aktivitäten im Klassenraum und das Interesse an der Filmindustrie im normalen Leben. Die Verfasserin thematisiert authentische filmische Paraprodukte als wertvolle Ergänzung zu Filmen und schlägt vor, sie als höchst willkommene didaktische Quellen zu nutzen. Da „Film“ für so viele Sprachlernende in der ganzen Welt ein zentrales Thema ist, scheint es sinnvoll, es als solches auch fest im Fremdsprachenunterricht zu verankern damit dem Fremdsprachenlehren und -lernen zusätzliche Schichten von Authentizität und persönlicher Relevanz hinzuzufügen – sowohl für das Lehren und Lernen von Deutsch als Fremdsprache als auch darüber hinaus.
On the generating graphs of symmetric groups
Authors: Erdem Fuat 
Published: March 2018

Abstract
Let

S
n

{S_{n}}

and

A
n

{A_{n}}

be the symmetric and alternating groups of degree n, respectively. Breuer, Guralnick, Lucchini, Maróti and Nagy proved that the generating graphs

Γ
⁢

(

S
n

)

{\Gamma(S_{n})}

and

Γ
⁢

(

A
n

)

{\Gamma(A_{n})}

are Hamiltonian for sufficiently large n. However, their proof provided no information as to how large n needs to be. We prove that the graphs

Γ
⁢

(

S
n

)

{\Gamma(S_{n})}

and

Γ
⁢

(

A
n

)

{\Gamma(A_{n})}

are Hamiltonian provided that

n
≥
107

{n\geq 107}

.
Metasurface holography: from fundamentals to applications
Authors: Huang Lingling , Zhang Shuang , Zentgraf Thomas 
Published: March 2018

AbstractHolography has emerged as a vital approach to fully engineer the wavefronts of light since its invention dating back to the last century. However, the typically large pixel size, small field of view and limited space-bandwidth impose limitations in the on-demand high-performance applications, especially for three-dimensional displays and large-capacity data storage. Meanwhile, metasurfaces have shown great potential in controlling the propagation of light through the well-tailored scattering behavior of the constituent ultrathin planar elements with a high spatial resolution, making them suitable for holographic beam-shaping elements. Here, we review recent developments in the field of metasurface holography, from the classification of metasurfaces to the design strategies for both free-space and surface waves. By employing the concepts of holographic multiplexing, multiple information channels, such as wavelength, polarization state, spatial position and nonlinear frequency conversion, can be employed using metasurfaces. Meanwhile, the switchable metasurface holography by the integration of functional materials stimulates a gradual transition from passive to active elements. Importantly, the holography principle has become a universal and simple approach to solving inverse engineering problems for electromagnetic waves, thus allowing various related techniques to be achieved.
The relationship between neopterin and hepatitis B surface antigen positivity
Authors: Ünüvar Songül Ü , Aslanhan Hamza , Tanrıverdi Zübeyde , Karakuş Fuat 
Published: March 2018

Abstract
Hepatitis B is a life-threatening viral liver infection caused by the hepatitis B virus. Neopterin is regarded as an immunologic biomarker of several diseases related to activation of the cellular immune system. Hepatitis B infection is associated with increased production of cellular immune system markers. We aimed to investigate whether there is a relationship between hepatitis B surface antigen-positivity (HBsAg +) and neopterin to determine the role of neopterin in the early diagnosis of hepatitis B infections. Seventy-two HBsAg (+) patients with normal liver function tests and forty-three controls were included in the study. Neopterin levels were 17.6 ± 0.13 nmol/L in HBsAg (+) patients; and 9.12 ± 0.09 nmol/L in infection-free controls, respectively. Compared to the control group, a statistically significant increase (p < 0.001) in the serum neopterin levels of the patients was observed. No significant relationship was determined between neopterin levels and age/sex (both, p > 0.05). With overstimulation of interferon-gamma, the production of neopterin increases by monocytes/macrophages. Likewise with other diseases associated with an activated cellular immune system, this study shows that neopterin can be a predictive biomarker for persistent carriers of hepatitis B infection.
Adsorption of methyl violet from aqueous solution using brown algae Padina sanctae-crucis
Authors: Mahini Reza , Esmaeili Hossein , Foroutan Rauf 
Published: March 2018

Abstract

Objective
The presence of dyes in the water is toxic and harmful to human body so, it must be removed from the water. In the present study, the removal of methyl violet (MV) from aqueous solutions using brown algae “Padina sanctae-crucis” was investigated.

Materials and methods
The rate of adsorption was investigated under various parameters such as contact time (5–200), pH (2–11), dye concentration (10–60 mg/L), amount of adsorbent (0.25–5 g/L) and temperature (25–45°C).

Results
The maximum adsorption was achieved in 10 mg/L, pH=8 and adsorbent dose 2 g/L and 80 min contact time for removal of MV from aqueous solutions. Kinetic studies showed that the pseudo second-order model describes adsorbent kinetic behavior better. Besides, experimental data have been modeled using Langmuir and Freundlich isotherms and the results showed that both models are proper to describe adsorption isotherm behavior. In addition, the equilibrium study shows that the adsorption was physical and favorable. Moreover, a thermodynamic study revealed that the adsorption process is exothermic and spontaneously in nature. Furthermore, Maximum adsorption capacity using adsorbent was 10.02 mg/g.

Conclusions
It could be concluded that the P. sanctae-crucis biomass is a good adsorbent for removing MV dyes from aqueous solutions.
Ultimate Lateral Resistance of Quadrangle Array Piles Using the Strain Wedge Model on Soil Subgrade
Authors: Kim Jiseong , Kang Gi-Chun 
Published: March 2018

Abstract
This study proposed an ultimate lateral resistance calculation equation for array piles on which lateral loads act using a strain wedge model. The resistance properties were divided into the lateral resistance of earth pressure on a wedge back, shearing resistance on a wedge side, and friction resistance between the pile and the soil. The value of their resultant forces subtracting overlap resistance was expressed as the ultimate lateral resistance of an array pile. This study compared and analyzed the existing research results to verify the validity of the proposed equation. The results showed that the proposed equation was larger at the front-row pile, approximate at the middle-row pile, and smaller at the back-row pile, but the total ultimate lateral resistance turned out to be similar.
Dampak Revitalisasi Pasar Tradisional Terhadap Pendapatan Pedagang di Pasar Bulu Semarang
Authors: Aprilia Rizka 
Published: March 2018

Latar belakang penelitian ini bertujuan untuk melihat dampak revitalisasi pasar tradisional terhadap pendapatan pedagang di Pasar Bulu Semarang. Jenis penelitian ini adalah kualitatif dan kuantitatif. Data dikumpulkan melalui observasi, wawancara, dan dokumentasi. Teknik analisis data menggunakan model interaktif dan uji t sampel berpasangan. Hasil menunjukan bahwa mayoritas pedagang di Pasar Bulu merupakan penduduk asli Kota Semarang. Revitalisasi tidak mengubah hubungan sosial antar pedagang, maupun pedagang dengan aparat yang selama ini terjalin dengan baik. Setelah revitalisasi kondisi bangunan Pasar Bulu menjadi lebih bersih dan rapi. Revitalisasi berdampak pada penurunan pendapatan pedagang, dibuktikan dengan hasil uji t sampel berpasangan diperoleh hasil t_hitung= 10,116 > t_tabel= 2,064 dengan probabilitas 0,000 < 0,05. Rata-rata pendapatan pedagang sebelum revitalisasi sebesar Rp 5.280.000, sedangkan sesudah revitalisasi sebesar Rp 3.366.000. Kesimpulan dalam penelitian ini adalah revitalisasi berdampak pada penurunan pendapatan pedagang di Pasar Bulu Semarang.
The basic problem of this study is to show the impact of the traditional market revitalization towards the traders income in Bulu Market Semarang. The type of this study are qualitative and quantitative. The data collected by observation, interview, and documentation. The analysis of data using interactive models and paired samples t test. The result showed that the majority of traders in Bulu Market are the natives of Semarang City. The revitalization did not change the social relations between the traders, and traders with the officers who had been well maintained. After the revitalization, the Bulu Market Building condition become more clean and neart. The revitalization gives an impact towards the decreasing of the traders income, proved by the paired samples t test result which showing t_hitung= 10,116 > t_tabel= 2,064 with probability 0,000 < 0,05. The average of the traders income before revitalization Rp 5.280.000, meanwhile after the revitalization Rp 3.366.000. the conclusion in this study is the revitalization gives an impact towards the decreasing of the traders income in Bulu Market Semarang
Faktor-Faktor yang Mempengaruhi Pengambilan Keputusan Menjadi Tenaga Kerja Indonesia (Studi Kasus di Kabupaten Grobogan)
Authors: Saktyo Kuncoro Bagas 
Published: March 2018

Penempatan tenaga kerja Indonesia di Jawa Tengah terutama di kabupaten Grobogan merupakan salah satu sumber tenaga kerja Indonesia yang cukup berkontribusi.Kontribusi yang dimaksud adalah sumbangan tenaga kerja Indonesia yang berasal dari Kabupaten Grobogan.Tujuan penelitian ini adalah untuk mengetahui seberapa besar pengaruh dominan faktor umur, status pernikahan, status pekerjaan, pendidikan terakhir, jumlah tanggungan, dan pendapatan terhadap keputusan menjadi tenaga kerja Indonesia. Populasi dalam penelitian ini adalah orang yang akan bekerja menjadi Tenaga Kerja Indonesia (TKI) di Kabupaten Grobogan..Pengambilan sampel dengan menggunakan teknik incidental sampling sejumlah 100 responden.Metode pengumpulan data yang digunakan metode kuesioner. Metode analisis dalam penelitian ini menggunakan analisis faktor dengan menggunakan program SPSS 16.00 for Windows. Hasil penelitian ini menunjukan bahwa faktor yang paling berpengaruh dominan terkonsentrasi menjadi 3 faktor, faktor pertama memberikan pengaruh sebesar 43,93% terdiri dari status pernikahan, pendidikan terakhir, dan umur. Faktor kedua memberikan pengaruh sebesar 21,54% terdiri dari status pekerjaan dan pendapatan. Faktor ketiga memberikan pengaruh sebesar 14,27% terdiri atas jumlah tanggungan.
Placement of Indonesian workers in Central Java, especially in Grobogan is one source of Indonesian workers who contribute enough. The contribution in question is a donation of Indonesian workers coming from Grobogan. The purpose of this study is to find out how much influence the dominant factor of age, marital status, employment status, recent education, the number of dependents, and income to the decision to become Indonesian labor. The population in this study are people who will work to become Indonesian Migrant Workers (TKI) in Grobogan District..Sampling using incidental sampling technique of 100 respondents. Methods of data collection used questionnaire method. The method of analysis in this study using factor analysis using SPSS 16.00 for Windows. The results of this study indicate that the most dominant factor is concentrated into 3 factors, the first factor gives the effect of 43.93% consists of marriage status, last education, and age. The second factor gives an influence of 21.54% consisting of employment status and income. The third factor gives an influence of 14.27% consists of the number of dependents.
Tecnologia e Aprendizagem de Conceitos Matemáticos
Authors: Castro-Filho José Aires de , Freire Raquel Santiago , Castro Juscileide Braga de 
Published: March 2018

Os avanços e a disseminação do uso das tecnologias de informação e comunicação (TIC) trouxeram novas perspectivas para a área da psicologia e da educação matemática. Este artigo pretende discutir as abordagens usuais das tecnologias para a educação matemática e a aprendizagem de conceitos matemáticos. Será abordado um histórico de como os primeiros softwares ligados à matemática contribuíram para o desenvolvimento de pesquisas na área da psicologia da educação matemática, depois como essas tecnologias avançaram para concepções de desenvolvimento de recursos que pudessem ser acessados pela Internet. Ainda será apresentado pesquisas que mostram novos rumos para a utilização destas tecnologias em processo educacional interativo que propicia a produção de conhecimento individual e grupal em processos colaborativos favorecidos pelo uso de ambientes digitais e interativos de aprendizagem.Palavras-chave: Conceitos Matemáticos. Tecnologias da Informação e Comunicação. Psicologia da Educação Matemática.AbstractAdvances and the spread of the use of information and communication technologies have brought new perspectives to psychology and mathematics education. This article is discussed as usual approaches to mathematical education technologies and mathematical learning concepts. A history of how mathematics software has contributed to the development of research in the field of mathematics education psychology has been discussed, as technologies have advanced to the conceptions of resource development that could be accessed through the Internet. Nevertheless, the results show that the new directions for the use of the technologies in interactive educational process that propitiates a production of individual and group knowledge in collaborative processes favored by the use of digital and interactive learning environments.Keywords: Mathematical Concepts. Information and Communication Technologies. Psychology of Mathematics Education.
DETERMINAÇÃO SOCIAL DO HIV/AIDS: REVISÃO INTEGRATIVA
Authors: Maranhão Thatiana Araujo , Pereira Maria Lúcia Duarte 
Published: March 2018

<p>Objetivo: investigar a produção científica sobre a determinação social do HIV/aids publicada no período de 2009 a 2015. Método: Revisão integrativa realizada nas bases de dados SciELO e Medline via PubMed empregando-se os descritores Síndrome da Imunodeficiência Adquirida <em>(Acquired Immunodeficiency Syndrome)</em>; HIV <em>(VHI)</em>; Determinantes Sociais da Saúde <em>(Social Determinants of Health)</em>; Desigualdades em saúde <em>(Health Inequalities)</em>. Resultados: A amostra constituiu-se de 22 manuscritos, dos quais emergiram cinco categorias temáticas baseadas no modelo de determinação social de Whitehead e Dahlgren, são elas: Determinantes individuais do HIV/aids; Determinantes comportamentais do HIV/aids; Influência das redes sociais sobre o HIV/aids; Determinantes intermediários do HIV/aids e Determinantes distais do HIV/aids. Conclusão: O estudo possibilitou compreender a extensa cadeia causal envolvida na infecção pelo HIV/aids, os quais perpassam o aspecto meramente biologicista. O conhecimento dos determinantes sociais da doença poderá subsidiar intervenções articuladas nos diversos setores da sociedade, além do setor saúde.</p><p> </p><p><strong>Descritores:</strong> Síndrome da Imunodeficiência Adquirida. HIV. Determinantes Sociais da Saúde. Desigualdades em saúde.</p><p><strong> </strong></p>