bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGENALAN TAS RANSEL PADA CITRA DIGITAL DENGAN EKSTRAKSI FITUR TEKSTUR MENGGUNAKAN METODE GRAY LEVEL CO-OCCURRENCE MATRIX
Authors: Cahya Rahmad  , Mungki Astiningrum  , Lesmana Ade Putra
Published: March 2019

The Backpack is one type of bag that experienced significant development. Many people buy it for their needs. However, when assessing a backpack directly or on the road, he could not recognize the backpack. The generally people want to buy backpacks must look at the price, color, shape, features, and the main ingredients of manufacture. Therefore, in image processing, there is a feature extraction theory for the process of recognizing an object. The backpack itself has a different texture. So that the introduction of the object is better done texture feature extraction with the gray level Co-occurrence matrix method. After that, then get the uniqueness of the backpack image to the classification with the image of the backpack in the database. The last stage in this study the authors conducted trials in 3 conditions. The first condition is based on a backpack photo-taking background. The second condition is based on the pixel capacity of the camera to retrieve the backpack image. And the third condition is based on the brightness of the backpack image. Of these three conditions, a percentage of matching values was obtained in the first condition with an average percentage of 90%, the second condition with an average percentage of 80% and last on the third condition with an average percentage of 70%.
ROBOT PENGETIK UNTUK ALAT BANTU PENGOPERASIAN KOMPUTER BAGI PENYANDANG CACAT
Authors: Syamsiar Kautsar  , Bety Etikasari  , Beni Widiawan  , Khafid Agustianto
Published: March 2019

Pada tahun 2005, UNICEF memperkirakan jumlah anak-anak penyandang cacat di bawah usia 18 tahun dari 150 juta anak. Indonesia mempunyai 11 juta pekerja penyandang cacat. Jumlah ini kurang dari 50% jumlah penderita cacat (data tahun 2010). Berbagai upaya telah dilakukan untuk membantu penyandang cacat agar dapat bekerja secara normal. Ada banyak penelitian tentang kaki palsu, tangan buatan, dan kursi roda bermotor. Dalam penelitian ini akan membangun sebuah robot pengetik. Ini dirancang untuk penyandang cacat fisik. Fungsi robot ini dapat membantu orang cacat untuk mengoperasikan computer secara normal. Robot pengetik terdiri dari 2 robot lengan. Setiap lengan mempunyai 4 derajat kebebasan (DOF). Sensor kompas dengan kompensasi kemiringan dipasang pada kaki pengguna. Ini digunakan untuk mengukur pergerakan kaki pengguna. Keyboard USB ukuran mini digunakan sebagai objek kerja robot. Sebuah rule-based dibuat untuk mengkonversi gerakan kaki pengguna menjadi gerakan robot pengetik. Pembuatan rule-based mempunyai tingkat keberhasilan 100% (untuk keseluruhan akses tombol) dan kesalahan posisi maksimum 3 mm.
O funcionário de escola pública no Paraná: uma análise do Jornal Sindical 30 de Agosto (2003-2008)
Authors: Oliveira Everton Josimar de , Silva João Carlos da
Published: March 2019

O objetivo deste artigo é analisar a visão de funcionário de escola, expresso pelo Sindicato dos trabalhadores em educação pública do Paraná – APP/Sindicato, no Jornal Sindical 30 de Agosto, em edições publicadas entre os anos de 2003 e 2008. A leitura de um referencial crítico, como Monlevade (1995; 2014) e Rasia (1989), nos demonstrou a escola pública sendo composta por diferentes profissionais e a burocratização dos processos escolares interferindo no ensino e na aprendizagem. Consideramos que o Jornal 30 de Agosto defendeu o conceito de funcionário educador, mas priorizando questões como o reconhecimento salarial e a criação de um plano de carreiras.
Intencionalidades formativas do Movimento dos Trabalhadores Rurais Sem Terra (MST): o movimento social como sujeito educativo na escola de acampamento
Authors: Martins Fernando José , Silva Janaine Zdebski da
Published: March 2019

Artigo de abordagem qualitativa, com objetivos exploratórios e de caráter bibliográfico e documental tem por objetivo problematizar como o MST vem se constituindo como sujeito educativo e incidindo sobre a intencionalidade formativa das escolas de acampamento de modo a construir a ocupação da escola por meio das Escolas Itinerantes. Observamos que este processo se evidencia nas Itinerantes em suas dimensões política, pedagógica, sociocultural e coletiva, por meio de contradições, desafios e potencialidades. Ao entendermos o MST como sujeito educativo que possui determinada forma organizativa conectada ao projeto de classe, indicamos a possibilidade de contribuir com as reflexões e aproximações de diferentes povos latino-americanos que tem em comum a luta contra a opressão.
Impacto de la migración en el bienestar de los hogares en la comunidad de Españita, Tlaxcala
Authors: Varela Veneranda Xóchitl Juárez , García Carlos Esquivel
Published: March 2019

Los movimientos migratorios de la fuerza laboral a las grandes ciudades de México y otros países industrializados han sido un fenómeno constante de las áreas rurales a las urbanas. La migración es una de las diferentes estrategias de reproducción de los jefes de hogar que buscan el bienestar en sus hogares y en sus comunidades. La presente investigación se realizó en la localidad de Españita, Tlaxcala, con el objetivo de analizar los impactos que tiene la migración en el bienestar de los hogares comparando los jefes de hogar migrantes con los no migrantes. La perspectiva teórica de esta investigación fue el desarrollo humano. El trabajo de campo se realizó de forma intermitente de octubre 2014 a octubre 2015. Se aplicaron 39 entrevistas a jefes de hogares migrantes y no migrantes de Españita. Con base a estas entrevistas se realizó una tipología de productores: migrantes internacionales, migrantes nacionales, campesinos y alfareros. Los resultados encontrados muestran que los hogares con mayor bienestar en Españita son aquellos en los que jefe de familia trabaja en la instalación de sistemas de aire acondicionado en ciudades turísticas mexicanas. Los jefes de hogar migrantes internacionales muestran niveles de bienestar intermedios y los hogares más pobres son aquellos que obtienen sus medios de vida de la agricultura y la alfarería.
Os sujeitos das práticas agroecológicas em Francisco Beltrão, Paraná
Authors: Saquet Marcos Aurélio , Cichoski Pamela , Meira Raquel Alves de
Published: March 2019

Neste texto apresentamos alguns dos resultados das pesquisas realizadas no âmbito do projeto intitulado “Território e produção de alimentos: redes curtas, cooperação e comercialização de alimentos camponeses”, financiado pela Fundação Araucária (Edital n. 17/2016 - Pesquisa Básica e Aplicada), entre os anos de 2016 e 2018. Nosso objetivo geral é analisar os circuitos curtos de produção e comercialização de alimentos para consumo humano dinamizados por agricultores camponeses de Francisco Beltrão (PR), tentando qualificar a opção teórico-metodológica adotada e gerando subsídios sistematizados que possam ser utilizados na construção participativa de projetos de desenvolvimento territorial. Para tal, os procedimentos utilizados estão sendo os seguintes: pesquisa bibliográfica e documental, aplicação dos questionários, realização das entrevistas e análise dos dados secundários do IBGE. Entre os principais resultados conseguidos até o momento, está a compreensão aprofundada da agricultura camponesa praticada em Francisco Beltrão, nesta oportunidade, evidenciando-se os sujeitos das práticas agroecológicas neste município.
A função social da escola e a educação do campo: uma proposta humanizadora
Authors: Alves Fernando Donizete , Zanotto Luana
Published: March 2019

Este artigo tangenciou as políticas educacionais voltadas ao Ensino Fundamental da Educação Básica, com foco na Educação do Campo. Teve como objetivo discutir a função social da escola na perspectiva da educação dialógica e humanizadora. Para tanto, pautou-se nos preceitos teóricos de Paulo Freire e de outros autores latino-americanos engajados na práxis da libertação e dialogicidade. Por meio da análise dos pressupostos teóricos, ressalta-se a busca do reconhecimento cultural e da inclusão social, assim como da visibilidade da condição rural em âmbito escolar urbano, com base em uma efetiva educação humanizadora.
SELF-ORGANIZATION VS CREATIVITY: PRINCIPLES OF COMPREHENSION
Authors: Halchenko Maksym
Published: March 2019

Synergetics is a science of self-organization of complex systems - biogeocoenosis, social systems, consciousness, human thinking, information and technology complexes. Synergetics seeks to create a "single field" of interdisciplinary communication, to form the principles of a scientific picture of the world. The unevenness of complex systems under certain conditions gives rise to the self-organization of both natural and social processes. As a doctrine of self-development, synergetics rebuilds contemporary worldview and thinking, through which one can understand the instability, nonlinearity, and openness of the modern world in its uniqueness and integrity.
A Comparison of Rub Subtypes Verbs in English And Konjo Language
Authors: Syamsir Syamsir
Published: March 2019

This research focuses on Rub subtype verbs in and English Konjo language. The aims of the research were (1) to identify Rub subtype verbs in Konjo language and English. (2) to investigate the similarities and the differences of Rub subtype verbs in English and Konjo language in the aspect of semantic and grammatical construction. Furthermore, this research used descriptive qualitative method. English data were taken from COCA (Corpus of Contemporary American English). Meanwhile, Konjo language data were taken from observation and interview. Then, the results of this research indicated that (1) there are twelve Rub subtype verbs in English:  rub, wipe, scrape, scratch, mark, sweep, brush, shave, rake, polish, lick and wash. Then, in Konjo language, there are nineteen verbs of Rub subtype: a’goso’, assossoro, angngampallasa, a’lu’lu’, angnga’ru’ akkankang, angngara’musu, annanrai, a’ca’ a’barrasa, assika’, accukkuru, kokkoro, assumer, a’lemong, angngemu’, a’bissa, assassa, and angngi’lasi. (2) The similiarities and the differences of Rub subtype verbs in English and Konjo language: The similarities are both of Rub subtype verbs in English and Konjo language can be applied in construction I (Agent + Target + Manip) and construction II (Agent + Manip + Target). The differences are the variant construction of English Rub subtype verbs and the extra constructions of Konjo language Rub subtype verbs. The variant construction of English Rub subtype verbs is variant construction Ib (Agent + Target (Adj) + Manip) and extra constructions of Konjo language are extra construction Ia (Agent + Target), Ib (Target + Agent), Ic (Agent + Target + Agent), Id (Agent), Ie (Target + Agent)*, IIa (Agent + Target + Manip)*, IIb (Manip + Agent + Target), IIIa (Manip + Target + Manip) and IIIb (Manip + Manip + Target).
Understanding Natural Approach for Teaching Productive Skills
Authors: Arjulayana Arjulayana , Rafli Zainal , Ansoriyah Siti
Published: March 2019

This study is appointed to report the English teacher’s understanding of teaching productive skills through Neuro-Linguistics Programming. Neuro-Linguistics Programming as one of the approach in teaching English as a foreign language, with focusing on the brain anatomy, and it can stimulate student’s creative thinking, language uses, and motivation. Productive skills are need to be fostered by the students in learning English as a foreign language, because writing, and speaking are the most essential language skills. This research is uses qualitative descriptive method, with triangulation model in doing validity and reliability data. There are some steps applied in this research; Planning, observation, interviews, giving questionnaire, and the last is data analysis. The researcher focuses on the English lecturers who have taught English more than 2 years as subjects of the research. 7 questions in close - ended answer (yes/no answer) are given and 5 questions in short answer interview are implemented to gain the data regarding to lecturer’s understanding in NLP concept for teaching productive skills. 23 English Lecturers both male and female are to be the subjects of the research. From the data analysis, the result shows that almost of English lecturers know the NLP approach in teaching language, and they always give brain storming as a part of NLP concepts.
The Washback Effect of Cat on Students’ Learning in EFL Classroom
Authors: Safitri Ida Dwi
Published: March 2019

This study explores how the students learn after CAT (computer-assisted test) is applied in teaching and learning English. CAT employs computer applications for evaluating test takers’ performance in learning English. The main concern of this study is to investigate the washback effect of CAT on students’ learning in EFL classroom in Indonesia. Washback itself is defined as the influence of the tests or assessments in teaching and learning. It means that washback effect indicates the critical role of the tests or assessments on students, teachers and societies. In a qualitative design, the findings show that there are washback effects of CAT on students’ learning in EFL classroom.
Translation Technique Analysis of Mandarin Compound Sentence in Novel Huózhe 《活着》
Authors: Wardhana Henry Sani , Nababan M R , Wibowo Agus Hari
Published: March 2019

The purpose of this research was to describe the translation technique from novel Huózhe 《活着》 written by Yúhuá (余华) and novel to Live (Hidup) by Agustinus Wibowo.  The collected data were Mandarin compound sentences taken from novel Huózhe 《活着》 and the translation sentences from novel to Live (Hidup). Here, this research used qualitative descriptive method and provided by field work method. The techniques included content analysis, focus group discussion, and questioner. The researchers also provided the triangulation method, and used Spradley’s theory to analyze the data. This research used Molina & Albir’s  theory to study translation technique. The study showed the result of any kind translation techniques which used by the translator in the translation novel. This research only analyzed Mandarin compound sentence and its translation result in the target text. Based on this result, there are sixteen translation techniques that found, i.e established equivalence 831 (71,39%) data, variation 93 (7,99%) data, transposition 61 (5,24%) data, modulation 52 (4,47%) data, natural borrowing 46 (3,95%) data, explicitation 26 (2,23%) data, implicitation 20 (1,72%) data, discursive creation 9 (0,77%) data, addition 7 (0,60%) data, paraphrase 5 (0,43%) data, reduction 4 (0,34%) data, annotation 3 (0,26%) data, literal 3 (0,26%) data, generalization 2 (0,17%) data, adaptation 1 (0,09%) data, and particularization 1 (0,09%) data. Established equivalence is the dominant translation technique used to translate Mandarin compound sentence in novel Huózhe 《活着》.It is used because the translator can keep the messages of the various term in Mandarin compound sentence. The techniques that are applied to translate Mandarin compound sentence in novel Huózhe 《活着》can be used as a consideration to translate Mandarin compound sentence into Indonesia.
Sexual Refusal by Indonesian Female University Students
Authors: Yusuf Marwah Juwita
Published: March 2019

This research aims to find out the most frequent strategies used by Indonesian female university students in expressing their refusal to sexual intercourse and the refusal strategies that they used to refuse the sexual intercourse. This research was carried out in 14 cities in Indonesia with 638 respondents (307 female respondents and 331 male respondents). The data were collected by using Discourse Completion Task (DCT) and interview to identify the sexual refusal strategies by female university students. The data were analyzed by using reconstructed conversation and Speech Act theory by Searle (1976) and Politeness of Brown & Levinson (1989) as a supporting theory. This research finds seven frequent strategies used by Indonesian female university students to refuse the sexual intercourse. The first is pregnancy risk reason (37,07%), next is legality reason (21,59%), postponement (15,48%) is at the third place, direct refusal non-performative (14,05 %) as the forth and is followed by religiouos reason (7,94%) at the fifth, direct refusal performative (2,24%) is the sixth and the last strategy is topic switch (1,63%). The data also show that most of Indonesian female university students refuse the sexual intercourse by giving pregnancy risk reason such as fear of being pregnant. From the reconstructed conversation, the data analysis show that most of them use Indirect Speech Act to  maintain the relationship, the politeness and the positive face want of their boyfriend.
Teaching Writing with Authentic Video in EFL Classroom
Authors: Sianna Sianna
Published: March 2019

This study focuses its investigation on the effectiveness of authentic video in improving the students’ writing skill. The participants were 42 (22 for the experimental group and 20 for the control group) second semester students majoring in English Education Department at Universitas Muhammadiyah Parepare. A quasi-experimental method with two pretest-posttest group design was applied to gain the data. In the process of using the video, there were some types of video used such as documentary, educational video, tutorial video, news, and entertainment video. Those were assumed as videos that show the authentic English language culture in the EFL classroom. The results of the study show that the descriptive statistics of the groups reveals that the mean score in the posttest of the experimental group (81.45) is greater than the control group (74.67), the standard deviation in the experimental group (7.715) were more identic than in control group (10.721). In addition, the result of the independent sample test where the significance level (p=.026) is smaller than the standard alpha level (p=.05). The result shows a statistically significant difference between the students’ writing score of the control and experimental groups. In other words, the students in the experimental group were better than those in the control group. Therefore, it can be concluded that the use of authentic video was effective in improving the students’ writing skill.
The Effect of Planning on Complexity, and Accuracy in Second Language Production: A Case Study in Learner’s Writing
Authors: Suhendar Komara
Published: March 2019

This case study investigates the effect of planning on complexity, and accuracy in second language (L2) learners’ writing. The subject of the research is a twenty-four-year-old-Indonesian student named Della. She is selected due to her most current IELTS score, and her first-time residence in English speaking country. The participant is asked to write two writing tasks which was taken from IELTS topics. While the duration of time is set for the first task, the second task is not limited by time. After that, the results are compared and analyzed by means of T-unit as in Hunt (1965). The result of the research shows that planning may lead to slight improvement in learner’s writing. In terms of accuracy, there is 69.23% of error-free T-unit in task 1, and 72.22% in task 2. Similarly, in connection with complexity, the average length of T-unit and clauses in task 1 and task 2 is 12.92 and 15 respectively.
Free Will and Counterculture Movement in Anthony Burgess’ A Clockwork Orange
Authors: Pusparini Dewi
Published: March 2019

This research explores the relation between the aspect of free will in the novel A Clockwork Orange to the social and cultural phenomena in the era of counterculture movement. The writer uses descriptive qualitative method to analyze the structural elements of the novel and relate them to the supporting data from external references. The objectives of the research which are presented as follows: 1) to describe the way the importance of free will affect the characters’ behavior in A Clockwork Orange, and 2) to reveal the way the importance of free will in this novel reflect the social condition during the era of counterculture movement. The writer also applies the genetic structuralism approach to focus the analysis on the element of free will and the way it relates to the elements of counterculture. The result of this research shows that there are several structural relations that connect both the aspect of free will in the novel and those in the era of counter-culture movement which consist of youth subculture, resistance against the state, and police brutality. The implication of this research is to promote the improvement of youth’s behavior and social awareness by the implementation of free will and safe environment, not by force or violence.
In the Camp and on the March: Military Manuals as Sources for Studying Premodern Public Health
Authors: Geltner Guy
Published: March 2019

Historians tend to view public health as a quintessentially modern phenomenon, enabled by the emergence of representative democracies, centralized bureaucracies and advanced biomedicine. While social, urban and religious historians have begun chipping away at the entrenched dichotomy between pre/modernity that this view implies, evidence for community prophylactics in earlier eras also emerges from a group of somewhat unexpected sources, namely military manuals. Texts composed for (and often by) army leaders in medieval Latin Europe, East Rome (Byzantium) and other premodern civilizations reflect the topicality of population-level preventative healthcare well before the nineteenth century, thereby broadening the path for historicizing public health from a transregional and even global perspective. Moreover, at least throughout the Mediterranean World, military manuals also attest the enduring appeal of Hippocratic and Galenic prophylactics and how that medical tradition continued for centuries to shape the routines and material culture of vulnerable communities such as armies.
AUTOMATIC CONTOURING OF SEGMENTED HUMAN BRAIN ISCHEMIC STROKE REGION ON CT IMAGES
Authors: Meilūnas M. , Ušinskas A. , Kirvaitis R. , Dobrovolskis R. A.
Published: March 2019

Investigation of the relationship between stroke area size and patient status implies evaluation of the stroke area location, volume and shape. Computed tomography (CT) examination became very popular in such type of investigations due to its moderate price and less discomfort for patient in comparison with other techniques.

We propose an algorithm for segmented CT images post‐processing, which consists of several stages: filtering of CT slices, smoothing and extension of stroke region boundary, filling of stroke space, and computing of stroke volume via all slices. Post‐processing of several CT images using this technique showed that all accidental points can be filtered successfully and therefore the aim of ischémie stroke area determination can be reached. We are convinced that the quality of initial information (results of stroke area segmentation) plays a crucial role for later image processing.
On the Prevalence of Supermassive Black Holes over Cosmic Time
Authors: Buchner Johannes , Treister Ezequiel , Bauer Franz E. , Sartori Lia F. , Schawinski Kevin
Published: March 2019

We investigate the abundance of supermassive black hole (SMBH) seeds in primordial galaxy halos. We explore the assumption that dark matter halos outgrowing a critical halo mass M

c
have some probability p of having spawned an SMBH seed. Current observations of local, intermediate-mass galaxies constrain these parameters: for M

c
 = 1011
M
⊙, all halos must be seeded, but when adopting smaller M

c
masses the seeding can be much less efficient. The constraints simultaneously put lower limits on the number density of black holes in the local and high-redshift universe. Reproducing z ∼ 6 quasar space densities depends on their typical halo mass, which can be constrained by counting nearby Lyman Break Galaxies and Lyman-alpha emitters. For both observables, our simulations demonstrate that single-field predictions are too diverse to make definitive statements, in agreement with mixed claims in the literature. If quasars are not limited to the most massive host halos, they may represent a tiny fraction (≈10−5) of the SMBH population. Finally, we produce a wide range of predictions for gravitational events from SMBH mergers. We define a new diagnostic diagram for the Laser Interferometer Space Antenna to measure both SMBH space density and the typical delay between halo merger and black hole merger. While previous works have explored specific scenarios, our results hold independent of the seed mechanism, seed mass, obscuration, fueling methods and duty cycle.
Investigating the Candidate Displaced Active Galactic Nucleus in NGC 3115
Authors: Jones Megan L. , Burke-Spolaor Sarah , Nyland Kristina , Wrobel Joan M.
Published: March 2019

The nearby galaxy NGC 3115 contains a known radio-emitting, low-luminosity active galactic nucleus (AGN), and was recently claimed to host a candidate AGN displaced 14.3 pc from the galaxy’s optical photocenter. Our goal is to understand whether this represents a single offset AGN, an AGN in orbit around a central black hole, or something else. We present a new, sensitive (rms = 4.4 μJy beam−1) 10 GHz image, which finds evidence for only one AGN. We place a stringent limit on the radio luminosity of any secondary supermassive black hole of

erg s−1. An analysis of the relative positioning of the radio core, X-ray nucleus, and stellar bulge in this galaxy indicate that the radio source is centrally located, and not offset from the galactic bulge. This provides an argument against a single offset AGN in NGC 3115; however, it does not provide conclusive evidence against the purported offset AGN as an inspiralling secondary black hole.
A novel design of an electromagnetically levitated vibrational viscometer for biomedical and clinical applications
Authors: AKPEK ALİ
Published: March 2019

Accurate determination of the viscosity behavior of fluids is extremely important, especially for biomedical and clinical applications. For example, blood viscosity is used to detect cardiovascular diseases in patients. Like blood, all body fluids and biochemical solvents used in biomedical studies are very limited resources. Therefore, a viscometer that is especially focused for biomedical and clinical applications should have the ability to obtain viscosity results from a reservoir as small as possible, in a range as wide as possible and in a period of time as short as possible. The measurements must be accurate even when the fluid temperatures shift swiftly and the test fluids pass throughout the viscometer continuously. Thus, it would be a huge advantage if a viscometer had the capability to measure simultaneously dynamic viscosity, kinematic viscosity, static viscosity, and density. However, there is no viscometer in the world that can achieve these goals. In this study, a novel electromagnetically levitated vibrational viscometer is designed to solve this problem.
Multi-objective design optimization of a permanent magnet axial flux eddy current brake
Authors: TARVIRDILU ASL RASUL , YÜKSEL HÜSEYİN MURAT , KEYSAN OZAN
Published: March 2019

The main aim of this study is to optimize an axial flux eddy current damper to be used in a specific aviation application. Eddy current dampers are more advantageous compared to conventional mechanical dampers as they are maintenance-free due to contactless structure and have higher reliability, which is very desirable in aerospace applications. An initial eddy current brake prototype is manufactured and the test results are used to verify the 3-D finite element simulations. The effect of temperature on the brake performance is investigated. Finally, a multiobjective genetic algorithm optimization is applied to find the optimum pole number and geometric dimensions of the eddy current brake in order to achieve the desired torque-speed characteristic while the total weight of the brake is minimized. It is found that the mass and volume of the initial prototype can be halved by implementing this optimization algorithm.
Turkish lexicon expansion by using finite state automata
Authors: ÖZTÜRK MUSTAFA BURAK , CAN BUĞLALILAR BURCU
Published: March 2019

Turkish is an agglutinative language with rich morphology. A Turkish verb can have thousands of different word forms. Therefore, sparsity becomes an issue in many Turkish natural language processing (NLP) applications. This article presents a model for Turkish lexicon expansion. We aimed to expand the lexicon by using a morphological segmentation system by reversing the segmentation task into a generation task. Our model uses finite-state automata (FSA) to incorporate orthographic features and morphotactic rules. We extracted orthographic features by capturing phonological operations that are applied to words whenever a suffix is added. Each FSA state corresponds to either a stem or a suffix category. Stems are clustered based on their parts-of-speech (i.e. noun, verb, or adjective) and suffixes are clustered based on their allomorphic features. We generated approximately 1 million word forms by using only a few thousand Turkish stems with an accuracy of 82.36%, which will help to reduce the out-of-vocabulary size in other NLP applications. Although our experiments are performed on Turkish language, the same model is also applicable to other agglutinative languages such as Hungarian and Finnish.
Speech enhancement using adaptive thresholding based on gamma distribution of Teager energy operated intrinsic mode functions
Authors: ARSLAN ÖZKAN , ENGİN ERKAN ZEKİ
Published: March 2019

This paper introduces a new speech enhancement algorithm based on the adaptive threshold of intrinsic mode functions (IMFs) of noisy signal frames extracted by empirical mode decomposition. Adaptive threshold values are estimated by using the gamma statistical model of Teager energy operated IMFs of noisy speech and estimated noise based on symmetric Kullback–Leibler divergence. The enhanced speech signal is obtained by a semisoft thresholding function, which is utilized by threshold IMF coefficients of noisy speech. The method is tested on the NOIZEUS speech database and the proposed method is compared with wavelet-shrinkage and EMD-shrinkage methods in terms of segmental SNR improvement (SegSNR), weighted spectral slope (WSS), and perceptual evaluation of speech quality (PESQ). Experimental results show that the proposed method provides a higher SegSNR improvement in dB, lower WSS distance, and higher PESQ scores than wavelet-shrinkage and EMD-shrinkage methods. The proposed method shows better performance than traditional threshold-based speech enhancement approaches from high to low SNR levels.
Improving undersampling-based ensemble with rotation forest for imbalanced problem
Authors: GUO Huaping , DIAO Xiaoyu , LIU Hongbing
Published: March 2019

As one of the most challenging and attractive issues in pattern recognition and machine learning, the imbalanced problem has attracted increasing attention. For two-class data, imbalanced data are characterized by the size of one class (majority class) being much larger than that of the other class (minority class), which makes the constructed models focus more on the majority class and ignore or even misclassify the examples of the minority class. The undersampling-based ensemble, which learns individual classifiers from undersampled balanced data, is an effective method to cope with the class-imbalance data. The problem in this method is that the size of the dataset to train each classifier is notably small; thus, how to generate individual classifiers with high performance from the limited data is a key to the success of the method. In this paper, rotation forest (an ensemble method) is used to improve the performance of the undersampling-based ensemble on the imbalanced problem because rotation forest has higher performance than other ensemble methods such as bagging, boosting, and random forest, particularly for small-sized data. In addition, rotation forest is more sensitive to the sampling technique than some robust methods including SVM and neural networks; thus, it is easier to create individual classifiers with diversity using rotation forest. Two versions of the improved undersampling-based ensemble methods are implemented: 1) undersampling subsets from the majority class and learning each classifier using the rotation forest on the data obtained by combing each subset with the minority class and 2) similarly to the first method, with the exception of removing the majority class examples that are correctly classified with high confidence after learning each classifier for further consideration. The experimental results show that the proposed methods show significantly better performance on measures of recall, g-mean, f-measure, and AUC than other state-of-the-art methods on 30 datasets with various data distributions and different imbalance ratios.
A study on application container resource efficiency
Authors: DEMİRKOL ÖZMEN EMRE , ÖZ CEMİL , DEMİRKOL AŞKIN
Published: March 2019

Nowadays, the IT service environment develops in a dynamic, rapid, and unpredictable way. Microservices and application containers in this process have a significant impact on new generation IT service models. The fact that they have important capabilities such as modelability, presentability as service, and restructurability, are reasons for preferring them in many areas. Moreover, microservices can meet various needs of IT personnel. As it is known, all server system components, such as CPU, network, hard-drive I/O, affect energy consumption. At this point, microservices also play an important mediator role in resource management. Energy consumption of microservice-based applications is lower than that of the traditional approaches. However, there are still cases of recoverable and unnecessary consumption at some points. Microservices can be monitored and controlled using many methods. Thus, this provides us with opportunities to recover the wasted energy resources considerably. In this article, the effects of container-based microservice architectures on the energy consumption of the system and how to reduce these effects are presented. For this purpose, a methodology, which has 3 approaches (disconnect, pause, stop), and a tracing mechanism are proposed. The results show that this methodology has a considerable effect on energy efficiency.
Prediction of preference and effect of music on preference: a preliminary study on electroencephalography from young women
Authors: YILMAZ BÜLENT , GAZELOĞLU CENGİZ , ALTINDİŞ FATİH
Published: March 2019

Neuromarketing is the application of the neuroscientific approaches to analyze and understand economically relevant behavior. In this study, the effect of loud and rhythmic music in a sample neuromarketing setup is investigated. The second aim was to develop an approach in the prediction of preference using only brain signals. In this work, 19- channel EEG signals were recorded and two experimental paradigms were implemented: no music/silence and rhythmic, loud music using a headphone, while viewing women shoes. For each 10-sec epoch, normalized power spectral density (PSD) of EEG data for six frequency bands was estimated using the Burg method. The effect of music was investigated by comparing the mean differences between music and no music groups using independent two-sample t-test. In the preference prediction part sequential forward selection, k-nearest neighbors (k-NN) and the support vector machines (SVM), and 5-fold cross-validation approaches were used. It is found that music did not affect like decision in any of the power bands, on the contrary, music affected dislike decisions for all bands with no exceptions. Furthermore, the accuracies obtained in preference prediction study were between 77.5 and 82.5% for k-NN and SVM techniques. The results of the study showed the feasibility of using EEG signals in the investigation of the music effect on purchasing behavior and the prediction of preference of an individual.
Graph analysis of network flow connectivity behaviors
Authors: HU HANGYU , ZHAI XUEMENG , WANG MINGDA , HU GUANGMIN
Published: March 2019

Graph-based approaches have been widely employed to facilitate in analyzing network flow connectivity behaviors, which aim to understand the impacts and patterns of network events. However, existing approaches suffer from lack of connectivity-behavior information and loss of network event identification. In this paper, we propose network flow connectivity graphs (NFCGs) to capture network flow behavior for modeling social behaviors from network entities. Given a set of flows, edges of a NFCG are generated by connecting pairwise hosts who communicate with each other. To preserve more information about network flows, we also embed node-ranking values and edge-weight vectors into the original NFCG. After that, a network flow connectivity behavior analysis framework is present based on NFCGs. The proposed framework consists of three modules: a graph simplification module based on diversified filtering rules, a graph feature analysis module based on quantitative or semiquantitative analysis, and a graph structure analysis module based on several graph mining methods. Furthermore, we evaluate our NFCG-based framework by using real network traffic data. The results show that NFCGs and the proposed framework can not only achieve good performance on network behavior analysis but also exhibit excellent scalability for further algorithmic implementations.
Robust compressed domain watermarking algorithm for video protection and authentication in noisy channels
Authors: CHEGGOJU NAVEEN , SATPUTE VISHAL
Published: March 2019

This paper introduces a robust and noise-resilient compressed domain video watermarking technique for data authentication and copyright protection. In recent years, watermarking has emerged as an essential technique to be equipped with data transmission. The main challenge pertaining to transmission is to protect the watermark from noise introduced by the channel. Here, we address this issue by watermark replication and by using the independent pass coding (INPAC) algorithm for compression. A replicated watermark is embedded into the video by the proposed blind video watermarking algorithm and then the watermarked video is compressed by the INPAC algorithm. The compressed video is transmitted through binary symmetric channels and tested under various bit error rates to evaluate the proposed algorithm in noisy environments. The results obtained suggest that the proposed algorithm is capable of handling noise efficiently and the overhead due to key embedding is observed to be only about 3%.
A novel adaptive hysteresis DC-DC buck converter for portable devices
Authors: PARK SUNG SIK , LEE JU SANG , YU SANG DAE
Published: March 2019

This paper presents a new technique that adjusts the hysteresis window depending on the variations in load current caused by a voltage-mode circuit to reduce the voltage and current ripples. Moreover, a compact current-sensing circuit is used to provide an accurate sensing signal for achieving fast hysteresis window adjustment. In addition, a zero-current detection circuit is also proposed to eliminate the reverse current at light loads. As a result, this technique reduces the voltage ripple below 8.08 mVpp and the current ripple below 93.98 mApp for a load current of 500 mA. Circuit simulation is performed using 0.18 μm CMOS process parameters.
Low-latency and energy-efficient scheduling in fog-based IoT applications
Authors: RAHBARI DADMEHR , NICKRAY MOHSEN
Published: March 2019

In today’s world, the internet of things (IoT) is developing rapidly. Wireless sensor network (WSN) as an infrastructure of IoT has limitations in the processing power, storage, and delay for data transfer to cloud. The large volume of generated data and their transmission between WSNs and cloud are serious challenges. Fog computing (FC) as an extension of cloud to the edge of the network reduces latency and traffic; thus, it is very useful in IoT applications such as healthcare applications, wearables, intelligent transportation systems, and smart cities. Resource allocation and task scheduling are the NP-hard issues in FC. Each application includes several modules that require resources to run. Fog devices (FDs) have the ability to run resource management algorithms because of their proximity to sensors and cloud as well as the proper processing power. In this paper, we review the scheduling strategies and parameters as well as providing a greedy knapsack-based scheduling (GKS) algorithm for allocating resources appropriately to modules in fog network. Our proposed method was simulated in iFogsim as a standard simulator for FC. The results show that the energy consumption, execution cost, and sensor lifetime in GKS are better than those of the first-come-first-served (FCFS), concurrent, and delay-priority algorithms.
Dynamic Physarum Solver: a bio-inspired shortest path method of dynamically changing graphs
Authors: ARSLAN HİLAL
Published: March 2019

In dynamic graphs, edge weights of the graph change with time and solving the shortest path problem in such graphs is an important real-world problem. The studies in the literature require excessive computational time for computing the dynamic shortest path since determining changing edge weights is difficult especially when the graph size becomes large. In this paper, we propose a dynamic bio-inspired algorithm for finding the dynamic shortest path for large graphs based on Physarum Solver, which is a shortest path algorithm for static graphs. The proposed method is evaluated using three different large graph models representing diverse real-life applications. The effect of changing edge weights on the solution time is evaluated for each graph model separately and compared against ∆-stepping, which is the most representative implementation of Dijkstra’s algorithm. Experimental results show that the proposed method easily adapts edge weight changes and computes the dynamic shortest path efficiently.
Staffing policies of leading professional service firms
Authors: Martínez-Costa Carme , Mas-Machuca Marta , Olivella Jordi
Published: March 2019

Purpose: The aim of this study is to analyse the prevalence of the staffing policies associated with the characteristics of the two basic types of organisational configurations identified by Institutional theory (Professional Partnership and Managed Professional Business), or conversely, if they have been evolving as a consequence of contextual factors and trends.Design/methodology/approach: Exploratory research was performed through the case study method. Six case studies were conducted in Spanish affiliates of leading multinational management consulting firms.Findings: Our analysis revealed that the staffing policies and practices of the companies differ significantly. It was further deduced that the origin of companies and the practice of activities other than business consulting could influence their staffing policies. It is concluded that mixed models do exist nowadays and that the origin of companies largely determines their policies.Research limitations/implications: Cultural factors among countries could influence HRM policies and practices. Furthermore, the size of companies could determine (or limit) the implementation of certain staffing policies. The study could be extended to a sample of consulting companies of various sizes and countries to enrich the resultsPractical implications: For HR managers, knowing the staffing policies at these major companies is a benchmark of HRM effectiveness to be applied to their own companies. In particular, these cases are relevant for other knowledge intensive organizations.Originality/value: The paper provides current empirical evidence on the HRM staffing policies of leading consulting firms and their evolution
Trust under bounded rationality: Competence, value systems, unselfishness and the development of virtue
Authors: Cugueró Natàlia , Rosanas Josep M.
Published: March 2019

Purpose: This paper analyses the foundations of trust in a context of bounded rationality to arrive to the conclusion that for trust to be necessary is because individuals are bounded rational.Design/methodology/approach: Building on previous theoretical work we conceptually develop the reasoning involved to arrive deductively that bounded rationality provides a rationale for the concept of trust that goes beyond a calculative notion.Findings: We show that there are four reasons for trust to exist and that people assess probabilities to each in order to determine whether to trust a recipient, depending on each of the four. We also add to previous work and show how bounded rationality provides additional arguments to show how competence, value systems and unselfishness are necessary to underpin trust. We provide additional foundations to their three factors and we, focused on bounded rationality. We add the development of virtue as a crucial fourth aspect, which supports the argument that trust can be reinforced between people and developed through time.Originality/value: The concept of trust has been analyzed empirically, but it lacks some theoretical foundations to show under which assumptions trust is a requirement that goes beyond mere calculations, and can be developed or not through time. We also introduce how the concept of virtue has a major role in trust development.
Nuevos documentos para el estudio de la Apoteosis de los hombres célebres del palacio del Congreso de los Diputados
Authors: Ramírez Martín Virginia
Published: March 2019

Carlos Luis de Ribera recibe y acepta el encargo de pintar la bóveda del salón de sesiones del nuevo palacio del Congreso de los Diputados y, sobre su proyecto inicial, se introducen una serie de modificaciones que afectan, entre otras cosas, a la composición final de la Apoteosis de los hombres célebres. A partir de la documentación custodiada en diversos archivos, el presente artículo pretende ayudar a identificar cuándo se producen estos cambios, quién los aconseja y cómo la composición final influirá en la construcción de la identidad nacional, debido a su presencia en el centro de una de las dos cámaras de representación de la soberanía nacional.
La distribución del tiempo discrecional en España
Authors: Rey-Araújo Pedro M. , Fernández Fernández Melchor
Published: March 2019

El presente artículo aplica la metodología del tiempo discrecional al caso de la sociedad española. Mientras que la noción de tiempo libre en los estudios sobre usos del tiempo es generalmente construida como el remanente tras sustraer el tiempo efectivamente empleado en el empleo, el trabajo doméstico y los cuidados personales, el tiempo discrecional usa en su lugar el mínimo tiempo que es necesario emplear en las rúbricas indicadas. Al emplear estándares de necesidad en lugar de elecciones concretas, se configura como una aproximación más adecuada a la autonomía temporal de la que disfrutan los individuos y, por extensión, a su respectivo bienestar individual. Con el objetivo de desvelar las diversas segmentaciones existentes en la sociedad española en lo tocante al tiempo, el énfasis recaerá primordialmente en las intersecciones existentes entre las relaciones de género y la clase socioeconómica de origen.