bluuebunny/crossref_metadata_2025 huggingface dataset:
Language and Politicking: A Pragmatic Analysis of Political Texts in Political Posters and Jingles in Oyo State, Nigeria
Authors: Michael Ajayi Temitope , Oluwafemi Ajayi Daniel
Published: March 2019

This paper attempts a pragmatic analysis of political texts in political posters of gubernatorial candidates for 2015 General Elections in Oyo state, Nigeria, within the purview of Mey's (2001) Pragmatic Acts Theory. Data were collected from political posters of Governor Abiola Ajimobi(the incumbent governor of the state), the erstwhile governors of the state, Rasheed Ladoja and Alao Akala, and Professor Adejumo, a yet to be declared PDP's gubernatorial candidate for the said election. The study reveals that the language of politicians in the state is characterised by practs such as accusation, challenge, abuse, warning and persuasion, commendation and condemnation which draw on contextual features such as Shared Situational Knowledge (SSK), Shared Cultural Knowledge (SCK), Metaphor (MPH) and Relevance (REF). The paper concludes that politicians in the state, an indication of what happens on a large scale in the country, employ language to attack one another's personalities, rather than address issues that could help move the state forward.
The Unloved Variable of Extraversion and Academic Achievement in SLA
Authors: Muhabat Fakharh , Shahbaz Muhammad
Published: March 2019

This study is based on extraversion vs. introversion and their relation with academic achievements. It is conducted to find effects of these two personality types in SLA. It is a qualitative type of research and descriptive method is used for this research. Eysenck's theory of personality is used as a theoretical framework. Data is collected through interview from twenty students studying at a public sector university. After analyzing the data, this research supports the claim of applied linguists who believe that extraversion has the advantage in second language learning and extroverts obtained higher marks. This research is beneficial for those future researchers who want to conduct research on personality types and achievement in Pakistan and elsewhere in the world.
Yoruba Films and the Problem of Toneless Orthography
Authors: Fadoro J.O.
Published: March 2019

Much research attention has been devoted to Yoruba films, and the prominent position they now occupy in Nigeria. However, to the best of our knowledge, none of these research works has attempted to take a critical look at the problem associated with the use of tones and diacritics in YoruÌ€baÌ films. The major issue that engages our attention in this work is the problem of ambiguity occasioned by producers refusal to make adequate use of tones and diacritics in writing the titles of their films. Through the purposive sampling method, fifteen films were carefully selected and watched. In a tabular form, the researcher listed out these titles, their possible interpretations, the intended titles and the procedure of getting the real titles was analysed.
Transformation and African migrants: The conflicting worlds of cultural beliefs and marriage issues in No longer at ease and Chairman of fools
Authors: Smit Talita Christine , Indongo J. N
Published: March 2019

Human beings can be moulded by the geographical location in which they find themselves. Many Africans, just like Obi in No longer at ease and Farai in Chairman of fools, travel overseas for education and better paid jobs. During vacations or upon completion of their studies most of these Africans return home to their families in Africa. Some of them encounter conflicts because they expect the people who remained in Africa to behave in the same way as they behaved in the past. The returnees do not consider that even they themselves have changed and life is not stagnant. Paradoxically, the migrants also seem to expect African societies to operate in exactly the same way as those societies they have been immersed in while overseas. This article presents an investigation of the way African authors depict characters migrating between two continents and how these characters are affected by the conflicting geographical, as well as metaphysical, worlds they live in. In the two novels studied it appears that the differences in cultural beliefs and marriage issues are responsible for the inner and interpersonal conflicts that the main characters experience
Persuasion Language in Iranian Newspaper Ads
Authors: Kazemi Foroogh , Jafari Talayeh
Published: March 2019

This article has studied the language of persuasion in advertising texts and has examined persuasion in some Persian newspapers with an emphasis on the gender variable. This study was conducted by analytical approach and its data was collected from Iran's most important and widely circulated newspapers. The study results suggested that in persuasive texts of newspapers, the advertisers encourage viewers and audiences to buy the products by emphasizing on some characteristics specific to women such as beauty, adornment and housewifery as well as some special characteristics of men such as fitness, social prestige, responsibility and the role of being a provider. The findings indicated that the studied texts had characteristics in such a way that they use specific linguistic components and literary forms such as foregrounding, alliteration, hyperbole and exaggeration, metaphors and ambiguity to convey the desired concepts and attract the audience according to gender. Thus, the gender variable is an effective factor in the structure of persuasive texts related to advertising in Persian newspapers. The results of the research implied the fact that gender differences have been reflected in advertising in the form of language and other specific metalinguistic elements such as ideology and culture, and these linguistic and metalinguistic strategies are employed differently for men and women, in a way that this unequal gender approach seems to be man-centered.
Languages of Communication in Baghdad: Domains and Perceptions
Authors: Dweik Prof. Bader S. , Al-Rahal Sara N.
Published: March 2019

The purpose of this study is to investigate the domains of use of the Turkmen language and Arabic in Baghdad and to explore attitudes towards Turkmen and Arabic. A sample, comprising (100) subjects from the Turkmen of Baghdad, is selected purposefully to fill out a sociolinguistic questionnaire to solicit information about the participants' demographic background, language use in different contexts and language attitudes towards the ethnic language, Turkmen and the mainstream language, Arabic. The results have revealed that the Turkmen of Baghdad use their ethnic language in different domains especially at home and among the family members. Also, they use both languages (their ethnic language and Arabic) in different social domains such as neighborhood, place of work, schools, media and other public places and have displayed positive attitudes towards Turkmen and Arabic alike.
DIFFERING EFFECTS OF CONFERENCE AND PEER ASSESSMENT ON WRITING SKILL OF EFL LEARNERS
Authors: Anvar Maryam Manafi , Nemati Azadeh
Published: March 2019

This study intended to demonstrate the significant differences between conference and peer evaluation on writing skill of EFL learners in Pooyesh Language House of Bandar Lengeh. To find out the differences, two types of tests (pre- test before treatment and receiving feedback, post- test after treatment and receiving feedback) were given to two groups of students (30 students for conference and 30 students for peer evaluation). The participants were all teen and adult students who were studying at the same level in this Language House. The writing tests were taken from their previous books which they had practiced before. The pre-test was given to students. In conference group, a mark was given to them by their teacher and during the term the students learned how to write through their teachers comments, but in peer evaluation group, through their classmates comments, so in the second group the classmates just checked each others papers and found errors without giving any mark, because they were not familiar with assessment system; it was the teacher task. In the first group, the teacher was familiar with assessment system, but in peer evaluation group the students found how to check other students' writing as treatment, according to IELTS writing assessment criteria, through their teacher guidance. The post- test was given at the end of the term and previous method was repeated. The results of the study indicated that there was no statistically significant difference between conference and peer evaluation, so the research questions were rejected. The results gained from the two variables were analyzed according to quasi experimental design.
The role of vowel length in comprehension during cross-cultural communication: An action research project
Authors: Morgan Gareth
Published: March 2019

The paper describes the process and outcomes of an action research project with the aim of determining whether focusing classroom input on vowel length has a positive effect on the production and comprehension of these sounds. The statistics were generated from respondents listening to the output of speakers from an experimental group, who had received instruction on this issue, and to the output of speakers from a control group, who had not been provided with any input, with the rate of intelligibility being compared. The conclusion drawn is t
Investigating the Application and Distribution of Metadiscourse Features in Research Articles in Applied Linguistics between English Native Writers and Iranian Writers: A Comparative Corpus-based Inquiry
Authors: Farahani Mehrdad Vasheghani
Published: March 2019

Metadiscourse features are the elements that can show the presence of writer(s) in the writing process.  The main objective of the present study was to run a quantitative corpus-based study on the way metadiscourse features (elements) were used by English native writers and Iranian non-native writers in the field of Applied Linguistics. To this end, 29 articles in the field of Applied Linguistics written by native speakers of English and Iranian non- native speakers of English were randomly selected; compiling together a corpus of 173839 words. Also, for the raw data and corpus analysis, the Sketch engine software was exploited by the researcher. The results of the study couldreveal the fact that in overall, writers of both corpora made use of interactive metadiscourse features more than interactional metadiscourse ones and that the texts written by native speakers enjoyed more metadiscourse markers compared to texts written by Iranian non-native speakers.
The Reproducing Kernel Hilbert Space Method for Solving System of Linear Weakly Singular Volterra Integral Equations
Authors: Al-Humedi Hameeda Oda
Published: March 2019

The exact solutions of a system of linear weakly singular Volterra integral equations (VIE) have been a difficult to find.  The aim of this paper is to apply reproducing kernel Hilbert space (RKHS) method to find the approximate solutions to this type of systems. At first, we used Taylor's expansion to omit the singularity.  From an expansion the given system of linear weakly singular VIE is transform into a system of linear ordinary differential equations (LODEs).   The approximate solutions are represent in the form of series in the reproducing kernel space . By comparing with the exact solutions of two examples, we saw that RKHS is a powerful, easy to apply and full efficiency in scientific applications to build a solution without linearization and turbulence or discretization.
Some Techniques to Compute Multiplicative Inverses for Advanced Encryption Standard
Authors: Ahmed Waleed Eltayeb
Published: March 2019

This paper gives some techniques to compute the set of multiplicative inverses, which uses in the Advanced Encryption Standard (AES).
Formation of Hierarchical 2D-Mos2 Nanostructures over Carbon Fabric as Binder Free Electrode Material for Supercapacitor Applications
Authors: Shanthi Selvaraj , Hayakawa Yasuhiro , Ponnusamy Suru , Ikeda Hiroya , Muthamizhchelvan Chellamuthu
Published: March 2019

Carbon fabrics are the new generation promising electrode materials for super capacitors owing to their high electrical conductivity, high chemical stability and low thermal expansion. In this work, 2D-MoS2 nanostructures have been successfully deposited over the commercially available carbon fabric by hydrothermal approach, using silicontungstic acid as an additive. MoS2 nanostructures – carbon fabric was broadly characterized using XRD, FESEM and Raman Spectroscopy. XRD patterns indicated that the fabricated MoS2 nanoparticles can be indexed to hexagonal (2H) and rhombohedral (3R) phases. FESEM images revealed the formation of hierarchical 2D MoS2 nanosheets arranged in a nanosphere like morphology over the carbon fabric. The electrochemical behavior of the MoS2 - carbon fabric and commercially available bare carbon fabric were studied using cyclic voltammetry analysis with different scan rates. The MoS2-carbon fabric exhibited an excellent electrochemical performance with a specific capacitance of 441 F/g at a scan rate of 10mV/s. The good cyclic behavior with symmetric charging/discharging curves, constant specific capacitance for longer scan rates, suggesting that the MoS2- carbon fabric electrode is a potential electrode material for high power applications.
Tissue Annual Effective Doses Estimation from Natural Occurring Radioactive Materials at Ramlet Homayier Area - South Western Sinai, Egypt
Authors: Tawfik Mostafa Niazy , Hassan Sayed Fahmy , Sallam Osama Reyad , Kinawy Nabil Zaki
Published: March 2019

?-ray spectrometric survey shows many radioactive anomalies within the ferruginous siltstone of the lower Um Bogma Formation. The high average eU/eTh values indicate an addition of uranium (migration in) in both the two regions. The results obtained from field measurements show that the indoor annual effective dose in Ramlit Homayier and Heboush area are (48.71 mSv) and (19.70 mSv) respectively while that estimated by HPGE detector were (1.90 and 0.08 mSv). According to AEDE obtained, the dose delivered to each tissue is estimated and it reveals high dose risk to public derived from the exposure to subsurface NORM in Ramlet Homayier more than Heboush area for most body tissues Consequently staying in such levels of NORM requires a high caution and awareness to minimize the health risk accompanied to daily exposure of public and applying radiation protection principals to achieve a better safe working and living environment.
An Overview on Security Schemes Based on Elliptic Curve for Cloud-Iot
Authors: Ayoub Amrani , Najat Rafalia , Abouchabaka Jaafar
Published: March 2019

The Internet of things appears as a solution in order to connect people around the world. With this concept of interconnection, sharing and dissemination of information between different physical objects. Many objects and services in different fields will be created, such as smart homes, e-health, transport and logistics that will make our everyday needs easier. The main characteristic of a connected object is that it must be identifiable, using technologies such as RFID (Radio-Frequency Identification), must interact with the environment by adding sensory techniques, and finally a connected object must be able to communicate with others. The evolution of Internet of things, increase the number of connected objects. Devices with sensors, generate a huge number of data. With this evolution, the big questions come! how can we control this big data? Cloud Computing a notion that is not newer than the IoT concept, but it's a revolution has steadily been gaining ground. It's a technology that offers to end users a great services in terms of storage, elasticity, analyzing data and other services . In this paper, we cite the benefits of integrating Cloud Computing and Internet of things to manage data provided by physical object and security difficulties that may have this convergence. We also present an overview of the security algorithms proposed in the literature, based on elliptic curves, in order to secure communication between smart objects and cloud computing.
Cyclic Hominid Evolution in A Moroccan-Algerian Coastal Refuge: The Last Million Years
Authors: Johnson Robert Glenn , Berger Andre
Published: March 2019

To explain the abundance of species of genus Homo in the fossil record of Africa south of the Sahara, the small Moroccan-Algerian coastal zone that was isolated by the barren Sahara is proposed to have been a refuge in which cyclic evolution occurred. A dry climate in combination with a small population enabled natural selection to generate new sub species or species during each climate cycle. As generalized from the last two major glaciations, in each cycle three coastal zone climates of differing aridity occurred, depending on the latitudinal zonality of high latitude Gulf Stream flow. When initially isolated with minimal zonality (strong northward North Atlantic Drift of Gulf Stream water), the coastal climate was like today’s, with warm summers and mild winter rains. Subsequently during intervals of ice sheet growth with intermediate zonality (weaker Drift), winters were colder, the climate was drier, and the environmental stresses increased. Finally, with the quite strong or complete zonality associated with Northern Hemisphere deglaciations (little or no Drift), extreme aridity often reduced the inhabitable area of the coastal zone. When each Eurasian deglaciation was completed, the isolation was probably briefly interrupted, as it was in the mid Holocene, by a well-watered savanna that developed across the Sahara. The savannas enabled each small and genetically modified population to increase and extend its range southward into the larger Africa. The pulses of evolution are directly related to glacial cycles by way of Earth’s orbital eccentricity and precession of the equinox. The intervals of coastal zone isolation usually lasted almost 22,000 years, which is the time needed for the precession of the equinox to move summer around on Earth’s orbit from one perihelion point to the next where monsoons are strong, and deglaciation and the savannas tend to occur. However, isolations as long as ~76,000 years also are found in the record because Eurasian ice sheet growth sometimes resumed before deglaciation was complete. In the last million years there may have been at least 18 pluvial savanna intervals when populations of new species or sub species of hominids would have extended their range by expanding on the savanna into the larger Africa or Eurasia. Periodic pulses of evolution of primitive hominids probably also occurred much earlier in the Pliocene with brief savannas but without large Northern glaciations. Generation of new species of hominids in the coastal zone and their injection into the larger Africa by savanna connections may therefore have been largely responsible for the abundance of genus Homo and predecessors in the fossil record and for our own Homo sapiens that we know today.
A percepção do profissional contábil sobre a aplicação da NBC TG 1000
Authors: Einsweiller André Carlos , Beber Luan Costa , Savaris Willian
Published: March 2019

Os procedimentos contábeis advindos com a implantação da NBC TG 1000 proporcionaram uma série de ajustes a serem implantados pelas empresas de pequeno e médio porte. Diante disso, o presente estudo tem como objetivo identificar qual a percepção dos contadores dos escritórios de serviços contábeis quanto à aplicação da norma NBC TG 1000. Quanto à abordagem, o trabalho caracteriza-se como qualitativa com utilização de recursos quantitativos. Para que os objetivos propostos fossem atingidos, utilizou-se da pesquisa descritiva. A amostra da pesquisa é de caráter intencional e os dados são de fontes primárias, a partir de um questionário estruturado aplicado junto a 18 contadores/escritórios. Os resultados obtidos foram condizentes com a atual situação de convergência das PMEs. Ressalta-se também que os profissionais contábeis estão buscando capacitação para poder aplicar a norma, de forma integral ou mesmo que parcial, levando a seus clientes informações relevantes e fidedignas para que possam tomar decisões dentro das entidades. Destaca-se, que a percepção do profissional contábil em relação ao processo de convergência é positiva, pois consideram que melhorará a informação contábil, ainda que demande mais tempo ou aumente os custos para a organização contábil em função da adequação à norma.

Palavras-chave: NBC TG 1000. Empresas de pequeno e médio porte. Percepção dos contadores.
Equalities between h-type Indices and Definitions of Rational h-type Indicators
Authors: Egghe Leo , Fassin Yves , Rousseau Ronald
Published: March 2019

Purpose

To show for which publication-citation arrays h-type indices are equal and to reconsider rational h-type indices. Results for these research questions fill some gaps in existing basic knowledge about h-type indices.

Design/methodology/approach

The results and introduction of new indicators are based on well-known definitions.

Findings

The research purpose has been reached: answers to the first questions are obtained and new indicators are defined.

Research limitations

h-type indices do not meet the Bouyssou-Marchant independence requirement.

Practical implications

On the one hand, more insight has been obtained for well-known indices such as the h- and the g-index and on the other hand, simple extensions of existing indicators have been added to the bibliometric toolbox. Relative rational h-type indices are more useful for individuals than the existing absolute ones.

Originality/value

Answers to basic questions such as “when are the values of two h-type indices equal” are provided. A new rational h-index is introduced.
Measuring Scientific Productivity in China Using Malmquist Productivity Index
Authors: Song Yaoyao , Schubert Torben , Liu Huihui , Yang Guoliang
Published: March 2019

Purpose

This paper aims to investigate the scientific productivity of China’s science system.

Design/methodology/approach

This paper employs the Malmquist productivity index (MPI) based on Data Envelopment Analysis (DEA).

Findings

The results reveal that the overall efficiency of Chinese universities increased significantly from 2009 to 2016, which is mainly driven by technological progress. From the perspective of the functions of higher education, research and transfer activities perform better than the teaching activities.

Research limitations

As an implication, the indicator selection mechanism, investigation period and the MPI model can be further extended in the future research.

Practical implications

The results indicate that Chinese education administrative departments should take actions to guide and promote the teaching activities and formulate reasonable resource allocation regulations to reach the balanced development in Chinese universities.

Originality/value

This paper selects 58 Chinese universities and conducts a quantified measurement during the period 2009–2016. Three main functional activities of universities (i.e. teaching, researching, and application) are innovatively categorized into different schemes, and we calculate their performance, respectively.
Identification and Prediction of Interdisciplinary Research Topics: A Study Based on the Concept Lattice Theory
Authors: Xu Haiyun , Wang Chao , Dong Kun , Yue Zenghui
Published: March 2019

Purpose

Formal concept analysis (FCA) and concept lattice theory (CLT) are introduced for constructing a network of IDR topics and for evaluating their effectiveness for knowledge structure exploration.

Design/methodology/approach

We introduced the theory and applications of FCA and CLT, and then proposed a method for interdisciplinary knowledge discovery based on CLT. As an example of empirical analysis, interdisciplinary research (IDR) topics in Information & Library Science (LIS) and Medical Informatics, and in LIS and Geography-Physical, were utilized as empirical fields. Subsequently, we carried out a comparative analysis with two other IDR topic recognition methods.

Findings

The CLT approach is suitable for IDR topic identification and predictions.

Research limitations

IDR topic recognition based on the CLT is not sensitive to the interdisciplinarity of topic terms, since the data can only reflect whether there is a relationship between the discipline and the topic terms. Moreover, the CLT cannot clearly represent a large amounts of concepts.

Practical implications

A deeper understanding of the IDR topics was obtained as the structural and hierarchical relationships between them were identified, which can help to get more precise identification and prediction to IDR topics.

Originality/value

IDR topics identification based on CLT have performed well and this theory has several advantages for identifying and predicting IDR topics. First, in a concept lattice, there is a partial order relation between interconnected nodes, and consequently, a complete concept lattice can present hierarchical properties. Second, clustering analysis of IDR topics based on concept lattices can yield clusters that highlight the essential knowledge features and help display the semantic relationship between different IDR topics. Furthermore, the Hasse diagram automatically displays all the IDR topics associated with the different disciplines, thus forming clusters of specific concepts and visually retaining and presenting the associations of IDR topics through multiple inheritance relationships between the concepts.
The Growing Phenomenon of Street Children in Tehran
Authors: Salihu Habeeb A.
Published: March 2019

This study examines the increasing phenomenon of street children in Tehran. It focuses on the challenges and risks these children encounter and the overall implications on the general populace and the country as a whole. The study adopted both primary and secondary sources of data. The primary data were qualitative design (face-to-face interview). The population include all street children in Tehran. Purposive and snowball sampling techniques were used to select a total of 3725 street children for this research. Information gathered was coded, categorized and analyzed using EZ Test Software to quantify the results and demonstrate the frequency of responses to the open-ended questions relating to the research interest. The study found that there are two categories of street children in Tehran (children of the street and children on the street), they experience several challenges such as extortion, exploitation, rape, and harassment. Furthermore, they engage in different activities to get money or survive. The study concludes that disrupted socioeconomic structure of families and the influx of different categories of people into the cities are the major causes of the phenomenon. The study, therefore, recommends that addressing the socioeconomic challenges should be the first approach toward ending the menace.
Globalization and its implications for the sovereignty of the State
Authors: Mohammed Al-Karim Ayad Rashid
Published: March 2019

The term globalization was commonly used in the last decade of the 20th century, especially at the end of the Cold War, the resulting collapse of the Soviet Union and the socialist camp, as well as the absence of ideological competition. Structural changes in the international environment were the opening of political borders and the unilateralization of the United States The United States as a superpower, which led to the reformulation of its policies towards the countries of the world in such a way that devotes the political, economic and cultural subordination of these countries.
Analysis (Hans Morgenthau) to the concept of power and applied to the units of the international system
Authors: Tawfiq Al - Haramazi Saif Nasrat
Published: March 2019

The theoretical curriculum in all disciplines is a basic requirement that nourishes the minds of the intellectual and cognitive recipients in the various scientific and cognitive stages. This is the framework that distinguishes the academic understanding of the anarchic, which is one of the most important and important keys in thinking and success in that jurisdiction or field, , Because it is unreasonable and logical to get into the core of any subject without searching and searching for its intellectual and historical bases to find out the reasons and reasons that surrounded this idea which was later recognized as an important contribution to the field of human sciences. Applied Sciences and other from the other side.
American foreign policy in Middle East: new transformations under W. Bush and Obama administrations
Authors: Mohammed Abdulkhaliq Shamel
Published: March 2019

This study attempts to diagnose the changes witnessed by the American foreign policy in the Middle East, in both of Presidents George W. Bush and Barack Obama administrations, this phase witnessed shift at the level of the visions, beliefs and attitudes. which reflected on the nature of the of dealing with the issues of the region , and embodied the most prominent features of change to adopt the U.S. policy toward the countries of the region in a general principle encapsulates policies , texture pressure in order to establish the values of democracy and human rights as a philosophy and a general principle , and inwardly save its interests in the Middle East , the United States sought for six decades in middle east countries  to achieve stability on the expense of democracy , and through the support of totalitarian existing regimes , and cracking down on the opposition .but the events of September 11 forced them to change the approach to foreign policy encouraging democracy and claim to impose reforms. the study exposed to the George W. Bush hard doctrine, unilateral, military tool that give superiority to the implementation of the objectives of its foreign policy, on the contrast of president Obama doctrine with its realistic approach, which sees the need to combine all the tools of foreign policy to implement its objectives, Also this study return to realistic policy in its alliances and legitimacy, as well as dealt approach U.S. political discourse towards the Muslim world, and seek the main topics like, the war on Iraq in 2003and its impact on reformation in the Middle East .And the U.S. position on the Arab Spring, specifically the Syrian revolution. Also this study deals with U.S policy towards Iran Nuclear file, and The Arab-Israeli conflict .The study concluded that foreign policy changes occurred in George W. Bush second presidency is differ from his first presidency, and this transformation take a wider dimension and more comprehensive in Barack Obama's presidency.
Salter-Harris Type III Fracture in a Football Player
Authors: Mills Lauren , Zeppieri Giorgio
Published: March 2019

A 15-year-old high school football player sustained direct impact to his anteromedial left knee by a teammate's helmet during practice. The physician referred the athlete immediately to an after-hours clinic for imaging to rule out a fracture. Radiographs of the knee showed a nondisplaced Salter-Harris type II fracture. The treating physician also ordered magnetic resonance imaging, the results of which allowed for a more specific diagnosis of the fracture as a Salter-Harris type III fracture of the left femur.J Orthop Sports Phys Ther 2019;49(3):209. doi:10.2519/jospt.2019.7984
A General Method for Structure Prediction of Metal-Ligand Interfaces of Hybrid Nanoparticles
Authors: Malola Sami , Nieminen Paavo , Hamalainen Joonas , Karkkainen Tommi , Hakkinen Hannu
Published: March 2019

Here, we devise and validate a general method to predict the atomistic structure of the metal-ligand interface of thiol-stabilized gold nanoparticles Aux(SR)y by using information about gold-thiol chemical bonding in a set of reference structures documented from experiments. Our method is successful in predicting the observed Au-S interfacial structure for a range of different Aux(SR)y particles with (x,y) = (36,24), (38,24), (102,44), (146,57), and (279,84), starting from the known structure of the gold core. In addition to predicting realistic interface structures, our method may prove to be useful for investigations on how the steric effects in the ligand layer affect the metal-ligand interface, as well as for predicting isomers and intermediate structures during cluster transformations induced by thermal dynamics or interactions with the environment. Our method is, in principle, easily modifiable for structural predictions of a large variety of hybrid nanomaterial systems once a suitable set of reference structures is available.
The Mechanisms App: Development of a New Learning Tool for Active Learning in Organic Chemistry
Authors: Winter Julia , Wegwerth Sarah E. , DeKorver Brittland K. , Morsch Layne A. , DeSutter Dane , Goldman Lawrence M. , Reutenauer Lauren
Published: March 2019

This paper details the development of the Mechanisms app for organic chemistry, from inception to prototype and commercial release and expansion. The early research with students and instructors is described.
Stabilization of Super Electrophilic Pd+2 Cations in Small-Pore SSZ-13 Zeolite
Authors: Khivantsev Konstantin , Jaegers Nicholas R. , Koleva Iskra Z. , Aleksandrov Hristiyan A. , Kovarik Libor , Engelhard Mark , Gao Feng , Wang Yong , Vayssilov Georgi N. , Szanyi János
Published: March 2019

The results of our combined experimental (FTIR, XPS, HAADF-STEM, EXAFS) and density functional theory study reveal that Pd ions in zeolites, previously identified as Pd+3 and Pd+4, are in fact present as super electrophilic Pd+2 species (ion pairs with the negatively charged framework oxygens). In this contribution we re-assign the spectroscopic signatures of these species, discuss the unusual coordination environment of “naked” (ligand-free) Pd+2 in SSZ-13, and their complexes with CO and NO. With CO, non-classical, highly positive [Pd(CO)2]2+ ions are formed with the zeolite framework acting as a weakly coordinating anion (ion pairs). Non-classical carbonyl complexes also form with Pt+2 and Ag+ in SSZ-13. The Pd+2(CO)2 complex is remarkably stable in zeolite cages even in the presence of water. Dicarbonyl and nitrosyl Pd+2 complexes, in turn, serve as precursors to the synthesis of previously inaccessible Pd+2-carbonyl-olefin [Pd(CO)(C2H4)] and -nitrosyl-olefin [Pd(NO)(C2H4)] complexes. Overall, we provide novel insight into the interactions of divalent metals with the zeolite framework, and show the new chemistry of Pd/SSZ-13 system with implications for adsorption and catalysis.
GPS RTK在东海公路测量中的应用及精度检核对比
Authors: 王 帅
Published: March 2019

GPS技术以全天候、高精度、自动化、高效益等显著优点，成功地应用于大地测量、工程测量、航空摄影测量、工程变形监测等方面，已经给测绘领域带来一场深刻的技术革命。RTK技术是在野外实时得到厘米级定位精度的测量方法，它的出现为工程放样、地形测图，各种控制测量极大地提高了外业作业效率。本文主要论述了GPS和RTK在东海公路中的应用，并通过水准与全站仪测量检核其精度并对其进行对比。
互联网工程技术背景下关于文化艺术教育精准扶贫
Authors: 刘 聪
Published: March 2019

文中首先概述了互联网工程技术，其次围绕互联网工程技术背景对文化艺术教育精准扶贫工作开展起到的作用进行了分析，包括从基础上打破贫困文化艺术教育、有效弥补公共文化基础设施建设的不足、提升贫困人群自身的艺术教育发展能力。最后进行了互联网工程技术背景下关于文化艺术教育精准扶贫的思考，包括完善固有的通信技术设施建设、加大互联网在教育扶贫中的财政投入、利用网络创新传统教育模式、在贫困人群中树立其互联网思维等，旨在提升中国整体的文化艺术教育精准扶贫工作开展质量。
工程量清单计价模式下的建设工程项目招投标
Authors: 赵 秀琴 , 杨 晓东 , 考 志勇
Published: March 2019

改革开放之后我国经济水平不断提升，建筑行业也取得大幅度进步，传统计价方式应对建筑行业不断发展的需求疲态尽显，由此工程量计价模式被积极推广应用。工程量计价模式的根本优势是对建设市场招投标工作的可操作性进行提升。工程量计价模式是当前阶段内建筑行业内普遍应用的一种计价方式，本文首先对其进行简单概述，然后结合建筑行业内的具体应用进行优势分析，并探讨当前阶段工程量计价模式下建筑项目招投标过程中存在的不足以及具体应对措施。
浅谈化工企业工程建设项目管理
Authors: 常 伟
Published: March 2019

本文针对化工企业工程建设项目管理，将从项目管理的相关概述入手，对化工企业工程建设项目管理存在的问题和解决对策进行深入分析，以此推动中国化工企业的发展。此次研究选用的是文献研究法，通过查找相关文献，为文章的分析提供理论基础。通过文章的分析得知，化工企业工程建设项目管理应科学适当，希望本文的研究，能在一定程度上对提高化工企业项目管理的科学性提供参考性意义。
The Effect of Guided Imagery to The Level of Anxiety of Trimester III Pregnant Woman in The Working Area of Mijen Health Center in Semarang City
Authors: Wulandari Priharyanti , Sofitamia Alifia , Kustriyani Menik
Published: March 2019

Background: Pregnancy is a time when there are dramatic changes both psychologically and biologically that can cause anxiety. From the results of interviews stated 7 of 10  third trimester pregnant mother said anxious moment before childbirth. Guided imagery is a therapy to overcome anxiety. The purpose of this study to determine the effect of guided imagery on the anxiety level of pregnant women at Trimester III. Method: Quantitative research type of quasi-experimental design pre and post-test without control. Sampling by purposive sampling. The sample size is 30 respondents. The anxiety was measured using the HRSA questionnaire and analyzed using the Match Pair Test Wilcoxon test. Results: The results of analysis of 30 respondents, before given guided imagery therapy most of the respondents experienced moderate anxiety as many as 18 people (60%). After being given guided imagery treatment most respondents had light anxiety 17 people (56.7%). The result of the Wilcoxon test shows p-value 0.000 (p-value <0,05), Ho is rejected and Ha is accepted. Conclusion: There is an influence of guided imagery on the anxiety level of third-trimester pregnant women in the Working Area of Mijen Health Center in Semarang City with a p-value of 0.000 which means that guided imagery can reduce the anxiety level of third-trimester pregnant women.
IMPROVING STUDENT LEARNING RESULTS IN MATHEMATICAL LEARNING THROUGH SOMATIC, AUDITORY, VISUAL AND INTELLECTUAL APPROACH (SAVI)
Authors: Adohar Ovan , Mahmud Ramlan , B Ruslan
Published: March 2019

This research was aimed to improve the Somatic,  Auditory, Visual, and Intelectual (SAVI) approach to Grade  Seven B (VII B) Bajiminasa. The Type of research used is classroom action research with classroom action research. The subject of this study was the students is class VIII Bajiminasa Makassar, South Sulawesi. of SMP Islam Sultan Agung 4 Semarang, Central Java. The writer analyzed the data with quantitative and qualitative approaches  on learning outcomes. The resulth of the study showed that the Somatic, Audotory, Visual and Intelectual (SAVI) approach was complete and student learning outomes had increased. To complete and improve in learning outcomes, presumably provide special guidance and do not experience improvement
KUALITAS MINUMAN SARI BIJI NANGKA (Artocarpus heterophyllus)DENGAN PENAMBAHAN JAHE MERAH(Zingiber officinale varrubrum rhizoma)
Authors: Al-Farid Syahri Fadhila , Jamaluddin Jamaluddin , Sukainah Andi
Published: March 2019

This study aims to determine the quality of jackfruit seed juice drinks with the addition of red ginger and to determine the level of acceptance of panelists on jackfruit seed juice drinks. Parameters observed included water content, protein content, carbohydrate content and organoleptic including color, taste, aroma and texture. This study used a Completely Randomized Design (CRD) consisting of one factor, namely the concentration of red ginger juice with four treatments, namely: 0%, 6%, 12%, 18%, each repeated three times. The results showed that jackfruit seed juice drink with the addition of 18% red ginger was the best treatment from the results of organoleptic tests. The proximate test results showed that the best treatment was 3.13% water content in 12% ginger treatment, 2.17% protein in 18% red ginger treatment and 95.61 carbohydrate in 18% red ginger treatment.
Atomic absorption determination of Hg (II), Cd (II), and As (III) in natural and waste water after preliminary group preconcentration
Authors: Saunina I. V. , Gribanov E. N. , Oskotskaya E. R.
Published: March 2019

The sorption of Hg (II), Cd (II), and As (III) by natural aluminosilicate is studied. It is shown that the mineral absorbs those toxicants in a rather wide pH range, quantitative extraction of analytes being achieved in a neutral or close to neutral medium (pH values range within 7.0 - 8.0; 6.3 - 7.5; 7.4 - 8.5 for Hg (II), As (III), and Cd (II), respectively). The effect of the time of phase contact on the degree of extraction of elements is shown. The sorption capacity of the mineral in optimal conditions of the medium acidity (0.06 mmol/g for mercury, 0.31 mmol/g for cadmium, and 0.52 mmol/g for arsenic) is determined. The distribution coefficients attain values of aboutnX 103-nX 104. A new combined method for determination of Hg (II), Cd (II), and As (III) in natural and waste water is developed and tested. The method consists in a preliminary group sorption concentration of the analytes by aluminosilicate, desorption of the analytes from the surface of the mineral and their subsequent atomic absorption determination. The correctness of the method is verified in analysis of spiked samples. The method is easy to use and exhibits high sensitivity, reproducibility and accuracy of analyte determination. The relative standard deviation does not exceed 0.13. Economic availability and possibility of using domestic sorption materials are the important advantages of the proposed procedure which can be used in the practice of laboratories monitoring the quality and safety of environmental objects.
Development of structural health monitoring methods through the analysis of kinetics of local stress-strain state
Authors: Bautin A. A. , Svirsky Yu. A. , Pankov A. V.
Published: March 2019

The paper describes one of the most promising ways of structure health monitoring based on analysis of the kinetics of local stress-strain state. Comparison with other methods of damage detection and advantages of the stress-strain state control are considered. To implement this method of monitoring, two types of sensors are considered: strain gauges and fiber Bragg gratings (FBG). The advantages of FBG, due to which their use in operation is most preferable, are presented. The possibility of using stress-strain state control is analyzed for a promising transport aircraft using the results of tensometry under cyclic loading. The relevance of the work is confirmed by various examples of using monitoring methods in on-board systems during operation. The possibility of monitoring the airframe parts is demonstrated for longitudinal fuselage joints as an example. The change in the stress-strain state of the longitudinal joints, caused by structural damage was confirmed by tensometry analysis and by analysis of the stress-strain state of bearing sheet by the finite element method (FEM), taking into account the fatigue cracks originated during cyclic loading. The results of the calculation are compared with the tensometry data. Proceeding from the results of the calculation of the stress-strain state of the damaged and undamaged structure, the zones of the greatest deformation change are determined to optimize potential locations for the sensors. The optimal placing of the sensors for monitoring the integrity of the joints is proposed. The study confirms that the method of damage monitoring of the structure, developed on the basis of changes in the kinetics of the stress-strain state, can be successfully used in tests for maintaining the integrity of joints and other places with multi-site damages, where the methods of visual and non-destructive testing are not effective.
Redefinition of the mole and uncertainty of analytical measurements
Authors: Konopel’ko L. A. , Kadis R. L. , Kustikov Yu. A.
Published: March 2019

Redefinition of the basic units of the International System of Units (SI) — the kilogram, mole, ampere, and kelvin, — which are now expressed in terms of fundamental physical constants means a substantial revision of the system. In particular, the new definition of the mole fixing the value of the Avogadro constant sets a unit of the amount of substance, which is independent of the unit of mass. We consider some consequences of redefining (the mole and kilogram) and focus on the uncertainty of measuring the amount of substance and related quantities which are important for description of the mixture composition. The issue regarding the molar mass of the substance and associated uncertainty is considered in detail It is noted that calculation of the molar mass using relative atomic masses, involves the molar mass constant which is not equal exactly to 1 g/'mol in the new SI. This introduces an additional, though very small, uncertainty of less than 1 x 10-9in relative terms. The budget of uncertainty for the amount of substance determined through the mass measurements when the mass is measured with the highest accuracy is scrutinized. It is demonstrated that for substances of less than 99.98% purity, the uncertainty associated to the purity is comparable to that of relative atomic masses of the elements. For high-purity substances, the uncertainty in the relative atomic masses have the largest contribution to the budget. Anyhow, the uncertainty associated to the molar mass constant is three orders of magnitude less than the nearest contribution to the uncertainty attributed to weighing. In the case of derived quantities which are the ratio of two quantities of the same kind, the additional uncertainty does not arise at all. This is illustrated by the calculation of the mole fraction of a component in the gravimetrically prepared gas mixture.
Cotidianidades transitorias: jóvenes migrantes centroamericanos en Tabasco y Chiapas, una historia en imágenes
Authors: Ocaña Ruiz Sonia Irene , Capdepont-Ballina Jorge Luis
Published: March 2019

A partir de una serie de fotografías tomadas y difundidas en las redes sociales de colectivos y Hogares-Refugio entre 2012 y 2016, en este texto se discuten algunos aspectos de la vida cotidiana de los jóvenes migrantes centroamericanos a su paso por la frontera sur de México. La discusión se centra en las contrastantes actitudes que los jóvenes exhiben cuando se sienten protegidos y acompañados ya sea en los Hogares-Refugio o en los trenes de carga (la bestia), con el objetivo de demostrar que, cuando les es posible, hacen elecciones que les permiten ejercer cierto control sobre su proceso migratorio. Esto se aprecia, por ejemplo, en el Hogar- Refugio La 72, que promueve el respeto a la diversidad sexual, ante lo que los jóvenes asumen posturas encontradas que demuestran la voluntad de adueñarse de su cotidianidad, más allá de los riesgos y limitaciones inherentes al tránsito migratorio
Extracting side-channel leakage from round unrolled implementations of lightweight ciphers
Authors: Chawla Nikhil , Singh Arvind , Mizanur Rahman Nael , Kar Monodeep , Mukhopadhyay Saibal
Published: March 2019

Energy efficiency and security is a critical requirement for computing at edge nodes. Unrolled architectures for lightweight cryptographic algorithms have been shown to be energy-efficient, providing higher performance while meeting resource constraints. Hardware implementations of unrolled datapaths have also been shown to be resistant to side channel analysis (SCA) attacks due to a reduction in signal-to-noise ratio (SNR) and an increased complexity in the leakage model. This paper demonstrates optimal leakage models and an improved CFA attack which makes it feasible to extract first-order side-channel leakages from combinational logic in the initial rounds of unrolled datapaths. Several leakage models, targeting initial rounds, are explored and 1-bit hamming weight (HW) based leakage model is shown to be an optimal choice. Additionally, multi-band narrow bandpass filtering techniques in conjunction with correlation frequency analysis (CFA) is demonstrated to improve SNR by up to 4×, attributed to the removal of the misalignment effect in combinational logics and signal isolation.  The improved CFA attack is performed on side channel signatures acquired for 7-round unrolled SIMON datapaths, implemented on Sakura-G (XILINX spartan 6, 45nm) based FPGA platform and a 24× reduction in minimum-traces-to-disclose (MTD) for revealing 80% of the key bits is demonstrated with respect to conventional time domain correlation power analysis (CPA). Finally, the proposed method is successfully applied to a fully-unrolled datapath for PRINCE and a parallel round-based datapath for Advanced Encryption Standard (AES) algorithm to demonstrate its general applicability.