bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Modeling of Interaction and Decay Processes of Topological Vortices in Reversed Time
Authors: Dushanbe Kh. Kh. , Shokirov F. Sh.
Published: August 2018

The paper studies T-symmetry properties of the well-known nonlinear sigma model (NSM), a class of quantum field systems in which physical fields are regarded as the coordinates of a certain manifold. Considers a symmetry property of the (2+1)-dimensional anisotropic O(3) NSM (n-field) with respect to time reversal. From the geometric point of view, O(3) NSM describes the dynamics of a single three-component isovectornthat takes on values in the Bloch sphere. The isovectorncan be identified with a point on the surface of a two-dimensional sphere and, therefore, corresponds to the element of a rotation group O(3). The anisotropy is selected in thez-axis direction and thus, the zero-energy states (vacuum states) of the model under investigation are equivalent to the point (the end of the isovectorn) at the poles of the Bloch sphere.

О(3) NSМ has an exact solution in the form of topological solitons (vortices, quasi-particles) possessing a topological charge (the Hopf index). It was shown in [8] that, for certain rate values of their motion, the interacting topological solitons decay into localized perturbations. In this case, the property of preserving the total sum of the topological charge is revealed.

In the present work, numerical modeling of interaction and decay processes of topological solitons of O(3) NSM in reversed time are carried out. It is shown that when there is time reversal, a complete restoration process of the initial state of the field of topological solitons by combining individual localized perturbations is observed. Thus, the paper confirms the property of T-invariance of O(3) NSM. To construct numerical models, are used methods of the theory of finite difference schemes, based on a specially developed algorithm for applying the properties of the stereographic projection of the Bloch sphere onto the complex plane. The developed method allows accurate calculations of the energy density of interacting vortex fields at each point of the stratified space. The paper proposes a software complex that allows us to conduct numerical studies of interaction processes of localized solutions of non-linear field-theoretical models in class O(3) NSM in reversed time.
Feature Construction Methods for the Electroencephalogram Signal Analysis in Hybrid “Eye-Brain-Computer” Interface
Authors: Sotnikov P. I.
Published: August 2018

The hybrid “eye-brain-computer” interface is a new approach to the human-machine interaction. It allows the user to select an object of interest on a screen by tracking the user’s gaze direction. At the same time, the user’s intent to give a command is determined by registering and decoding brain activity. The interface operation is based on the fact that control gaze fixations can be distinguished from spontaneous fixations using electroencephalogram (EEG) signal.

The article discusses the recognition of EEG patterns that correspond to the spontaneous and control gaze fixations. To improve the classification accuracy, we suggest using the relatively new feature construction methods for time series analysis. These methods include a selection of optimal frequency bands of the multivariate EEG signal and a modified method of shapelets. The first method constructs the optimal feature space using prior information on a difference in frequency components of the multivariate signal for different classes. The second method uses a genetic algorithm to provide selecting such fragments of the multivariate time-series, which reflect as much as possible the properties of one or more than one class of such time series. Thus, calculating distances between them and a set of k top-best shapelets allows us to provide feature description of the time series.

The article consists of five sections. The first one provides a mathematical formulation of the multivariate time-series classification problem. The second section gives a formal description of the proposed methods for feature construction. The third section describes test data, which include the EEG records from the six users of the hybrid “eye-brain-computer” interface. In the fourth section, we evaluate an efficiency of the methods proposed in comparison with other known feature extraction techniques, which include: 1) calculation of the average EEG amplitude values in the overlapping windows; 2) estimation of the power spectral density in the specified frequency bands; 3) selection of the most informative features using a genetic algorithm. In the fifth section, we conduct the statistical analysis of the results obtained. It is shown that the feature construction method, based on the selection of optimal frequency bands of the EEG signal, in efficiency significantly outperforms other techniques considered and opens up the possibility to reduce the number of false positives of the hybrid interface.
Spor işletmelerinde çalışan mutluluğu
Authors: GÜLLÜ Sevim
Published: August 2018

Çalışan mutluluğu kavramı, örgütsel davranış
alanında güncel konulardan biridir. Türkçe literatürde çok yeni bir kavram
olmakla beraber; spor işletmelerinde çalışan mutluluğunu incelemeye yönelik
daha önce böyle bir çalışmaya rastlanılmamış olması, çalışmamızın özgün
tarafını oluşturmaktadır. Bu çalışmanın amacı spor işletmelerinde demografik
değişkenler ile çalışan mutluluğu arasındaki ilişkiyi incelemektir. Bu amaç
doğrultusunda İstanbul’da faaliyet gösteren dört farklı özel spor işletmesinin
115 çalışanı çalışmaya gönüllü olarak katılmışlardır. Araştırma tarama
modelindedir. Birinci bölümde katılımcılara demografik bilgilerden
oluşan sorular sorulmuştur. İkinci bölümde ise, daha önce geliştirilen (Hills ve Argyle), bir yüksek lisans tezinde kullanılan (Akdeniz,
2016) Çalışan Mutluluğu Ölçeği kullanılmıştır. Bu tez çalışması için güvenirlik
analizi ayrıca yapılmıştır. Katılımcıların kişisel bilgilerinin dağılımlarının belirlenmesi için
yüzde (%) ve frekans testleri yapılmıştır. Verilerin normal dağılıma sahip olup
olmadığının belirlenmesi için Kolmogorov-Smirnov normallik testi uygulanmıştır.
Bunun sonunca Çalışan Mutluluğu Ölçeğinin normal dağılım gösterdiği tespit
edilmiştir. (p<0.05). Buna göre α = 0.05 anlamlılık düzeyinde 2 değişkenli
veriler için Bağımsız t testi, ikiden fazla değişkenler için ise Tek Yönlü
Varyans (ANOVA)  testi uygulanmıştır. Bulgulardan elde edilen
sonuçlara göre; cinsiyet,
medeni durum, çalışma şekli (kadrolu, sözleşmeli, yarı zamanlı) ve maaş
değişkenlerinin çalışan mutluluğunda anlamlı fark yaratmadığı görülmüştür
(p>0.05). Yaş değişkenine göre göre çalışan mutluluğu ölçeğine katılım
oranları incelendiğinde 26 yaş ve üstü çalışanların yaşı daha küçük çalışanlara
göre daha yüksek düzeyde görüş bildirdikleri bulgusuna ulaşılmıştır.  (t=-2,486; p=0,014<0,050)
Öğrenim düzeyi değişkenine göre çalışan mutluluğu
ölçeğine katılım oranları incelendiğinde ise önlisans, lisans ve yüksek lisans
mezunlarınn lise mezunlarına göre daha yüksek düzeyde görüş bildirdikleri
görülmüştür (t=-2,352; p=0,020<0,050).
Çalışmamız bu sonuçları itibariyle, örgütsel davranış alanında negatif kavramları
ifade eden üretkenlik karşıtı davranışlar, örgütsel sapma ile örgütsel intikam
(öç alma) eğilimi gibi konularla benzerlik göstermektedir. Çünkü bazı
çalışmalara göre; kurumda yaş, eğitim düzeyi ve pozisyon yükseldikçe negatif
davranışlar azalmaktadır, bizim çalışmamızda da yaş ve öğrenim düzeyi arttıkça
çalışan mutluluğu artmaktadır.
Circulation Index as a Quantitative Indicator of Angiogenesis in Chorioallantoic Membrane of Chicken Broilers
Authors: Ružić Zoran , Kanački Zdenko , Žikić Dragan , Ušćebrka Gordana , Mirčeta Jovan
Published: August 2018

Chorioallantoic membrane (CAM) is an extraembryonic membrane very frequently used for in vivo studies in various researches. Since researches require a fast method for quantifying the CAM angiogenic response, there is a need to develop a new precise and unbiased method of quantification of angiogenesis in CAM, which would be easy to perform and suitable for analysis of a large number of samples. The objective of this paper is to apply a new method of quantification of angiogenesis in investigation of the development of blood vessels in the CAM, in particular days of embryonic life considered essential for CAM development. The present research included 75 fertilized eggs of heavy hybrid Ross 308. CAM sampling for stereological analyses was in key phases of embryonic development, namely on the 12th, 15th and 19th day. The results of the present investigation show that the increase in embryonic age results in increase in circulation index, which is also an indicator of angiogenic processes developing in CAM. The lowest value of circulation index (0.1952) was recorded on the first sampling day (E12), while the highest value (0.2666) was recorded on the last sampling day (E19). This method may be applied in researching different factors which affect angiogenesis in CAM.
Decline and Current Status of the Grey Partridge (Perdix perdix L.) Population in Serbia - A Review
Authors: Ristić Zoran , Puzović Slobodan , Ponjiger Igor , Urošević Miroslav , Kovačević Milutin , Matejević Milosava , Marković Vladimir
Published: August 2018

Decrease of grey partridge population is a global process that has been catastrophic in recent decades. In England, the number of this species declined by 80% in the period from the beginning of the fifties to the mid-eighties of the last century (Potts, 1986). In the Czech Republic from 1965 to the end of the eighties by as much as 95% (Štasny et al. 1997), and the situation is similar in Poland (Panek, 2005). The status of grey partridge in Serbia follows the same pattern as mentioned, with drastic decline (Ristić and Puzović, 2015). The reasons for such trend are numerous, directly conditioned and are often difficult to eliminate. It has been found that culling has no significant effect on the population (Ristić, 1992), but changes in its habitat in order to increase the yield of agricultural crops and chemical protection have very negative effect on partridge number. In order to study each type of game, it is necessary to know the basic elements of the population: density, growth, birth rate, mortality, migration movements and gender and age structure. Migration has no effect on changes in the partridge populations. Period of assessment 2010-2013: Serbia: 20,000-28,000 breeding pairs (bp), Vojvodina: 900-1,000 bp. Long-term population trend 1980-2003: MD (mean decrease in number), short-term population trend 2000-2013: MD (mean decrease in number). The number generally decreases, especially in Vojvodina, where it is endangered by intensive agriculture and the application of harmful biocides. It is necessary to improve the monitoring and develop the national action plan.
Phosphorus as a Bottleneck for a Sustainable Food Suply
Authors: Husemann Christoph , Rodić Vesna , Husemann Jovana
Published: August 2018

Phosphorus is an essential nutrient for all forms of life, which means that food cannot be produced without it. As the phosphate rock (concentrated source of phosphorus) is a non-renewable and finite resource, with no substitute, without more sustainable management of phosphorus its deposits could be depleted in a rather short period. In addition, much of phosphorus eventually ends up in environment, where it causes pollution. Hence, one could say that the lack of phosphorus and its inappropriate management could be a bottleneck for a sustainable food supply and agricultural development in general. Nevertheless, unlike some other challenges that modern agriculture has to face (for example, water and energy scarcity, climate changes etc) the problem of phosphorus limited availability and accessibility has been largely neglected until recently. This paper’s particular intention is to explain why phosphorus management is one of key issues for the sustainable food supply and agricultural development, which factors have to be considered when dealing with this topic and which technologies could be applied as potential solutions. One solution to become independent from the fossil deposits of phosphorus might be its extraction from wastewater, which could contribute significantly to overcome the looming phosphorus and growing environmental crisis.
Fire Safety Evaluation of an Underground Car Park Using Numerical Simulation
Authors: Burlacu Dan , Anghel Ion , Popa Constantin , Căşaru Ionuţ
Published: August 2018

This paper presents a global fire risk assessment by using fire simulation in an existing underground parking. The simulation is conducted with the Fire Dynamics Simulator, a Computational Fluid Dynamics (CFD) tool and the simulations are performed on a threedimensional model of the parking. Multiple parameters and factors are taken into account in this complex assessment, such as geometry data, ventilation openings (both mechanical and natural), fire detection and fire suppression details. The output of the case study is represented by a large array of data: the time for sprinkler activation, maximum temperatures, smoke flow and overall fire evolution. The intention of the authors is to provide a global fire risk assessment of the parking, based on the fire safety engineering principles.
The clinically important anaerobic, human pathogenic Bacteroides species and their antibiotic resistance levels in Central and Southeast Europe
Authors: József Sóki , Edit és Székely
Published: August 2018

The Bacteroides and Parabacteroides species are important obligate anaerobic bacteria that are significant constituents of normal flora (microbiota), and opportunistic pathogens with special biological background. They are highly resistant to antibiotics and monitoring their resistance levels is important for their empiric therapy. Several antibiotic resistance studies were conducted in the USA and Europe and we have data for the region involved in this study showing comparable trends. Multidrug-resistant strains are emerging among Bacteroides too, where the proper antibiotic tests and treatments may be life-saving.
The application of pedotransfer functions in the estimation of water retention in alluvial soils in Żuławy Wiślane, northern Poland
Authors: Hewelke Piotr , Hewelke Edyta , Oleszczuk Ryszard , Kwas Marcin
Published: August 2018

The aim of the studies was the assessment of the usefulness of selected pedotransfer function for calculating the water retention of alluvial soils in Żuławy Wiślane. Żuławy Wiślane are an important area, both as far as agricultural production and environmental values are concerned. The analysis accounted for three models, i.e.: van Genuchten-Wösten, Varellyay and Mieronienko, Hewelke et al. Based on 122 dataset of alluvial soils from the Żuławy area, the statistical relationships between the measured values of total available water and values calculated for individual models were analysed. The studies carried out indicate that the analysed pedotransfer functions are characterized by different compatibilities with results obtained by means of direct measurement. The lowest average errors of fit were obtained for the Hewelke et al. and van Genuchten models.
Analyzing the Health Risks Resulting from Extending the 400kV High Voltage Transmission Lines on the Human
Authors: Dervish Mohammed Hassan
Published: August 2018

Although it is difficult to imagine life without electricity, there are compiling confirmations show that exposure to magnetic fields correlated electricity and radio frequencies pose magnificent hazards to human health. The most economist method to transfer electricity from power generation stations to users is by measures of high power transmission lines, buoyed by big transmission towers. The cables laced between the towers radiate magnetic and electric fields. In this research study, the magnetic field at ground level under 400 kV network lines extended in residential places have been conducted in two ways, mathematical calculation and practical measurement then the obtained results analyzed and compared with the international standards reference values. the reason of chose this type of transmission line is frequently using. The results indicate that they fall within the safe limiter commended by the World Health Organization. the strength of radiation increasing with high of sea level and moisture ratio because of air ionization
Implementation of Clock Gating for Power Optimizing in Synchronous Design
Authors: Mogheer Hussein Shakor , Hasan Khamees Khalaf
Published: August 2018

Huffman coding is very important technique in information theory. Compression technique is the technology for reducing the amount of data used to denote any content without decreasing the quality. Furthermore, Clock gating is an effective method for decreasing power consumption in a sequence design. It saves more power by dividing the main clock and distributing the clock to the logic blocks only when there is a need for those blocks to be activated. This paper aim to design Huffman coding and decoding process with proposing a novel method of clock gating to achieve low power consumption. Huffman design is executed by expending ASIC design procedures. With the purpose of executing the encoder and decoder structures, 130 nm typical cell technology libraries are utilized for ASIC implementation. The simulations are completed by utilizing Modelsim tool. The design of coding and decoding process has been made using Verilog HDL language. Moreover, it carried out using Quartus II 14.1 Web Edition (64-Bit).
SPK Penyeleksian Calon Presiden Mahasiswa Universitas Islam Riau Menggunakan Metode Fuzzy - AHP
Authors: Suryani Des , Mundayani Mundayani
Published: August 2018

Pemilihan raya mahasiswa adalah sebuah pesta demokrasi yang diadakan di kalangan mahasiswa yang merupakan awal dari pendidikan politik sejak dini bagi mahasiswa dan menjadi tempat mengaktualisasikan diri dan potensi yang dimiliki. Salah satu bentuk pemilihan raya mahasiswa adalah pemilihan calon presiden mahasiswa. Pemilihan calon presiden mahasiswa yang berlaku di Universitas Islam Riau saat ini masih dilakukan secara manual sehingga tidak efektif dan tidak efisien. Untuk memecahkan permasalahan tersebut dibutuhkan suatu sistem pendukung keputusan yang dapat memberikan keputusan terbaik untuk penggunanya. Sistem Pendukung Keputusan (SPK) bertujuan untuk menentukan calon presiden yang terpilih dalam proses penyeleksian berdasarkan tingkat kepentingan kriteria dan data nilai seleksi dari setiap kriteria yang telah ditetapkan. Sistem pendukung keputusan menggunakan metode fuzzy dan metode analytic hierarchy process. Metode fuzzy digunakan untuk menentukan nilai keanggotaan dari tiap-tiap nilai seleksi berdasarkan kriteria, dan metode Analytic Hierarchy Process (AHP) digunakan untuk mencari urutan prioritas dari berbagai alternative dalam proses pemecahan suatu permasalahan. Hasil perhitungan sistem pendukung keputusan ini berupa perangkingan calon presiden mahasiswa yang telah terpilih dalam proses penyeleksian. Proses perangkingan dimulai dari nilai tertinggi yang dimiliki oleh calon presiden mahasiswa dan jumlah yang terpilih menjadi kandidat presiden mahasiswa berdasarkan jumlah yang diinginkan pada periode tersebut.
Game Tradisional Tarik Tambang Berbasis Web
Authors: Syukur Abdul , Suprayogi Dian
Published: August 2018

Permainan tradisional memberikan alternatif yang kaya dengan nilai budaya, tetapi pada saat sekarang ini permainan tradisional sudah hampir punah jika tidak dipelihara dan dikembangkan, karena pada saat sekarang anak-anak lebih suka bermain video game dan juga lahan untuk bermain sudah jarang. Salah satu cara untuk memperkenalkan permainan tradisional adalah dengan membuatnya dalam bentuk aplikasi game berbasis web, sehingga diharapkan permainan tradisional tetap dapat dimainkan oleh siapa saja dan dimana saja dengan teknologi internet. Saat ini internet sudah berkembang menjadi salah satu media yang paling populer di dunia. Jumlah pengguna internet yang besar dan semakin berkembang telah mewujudkan budaya internet. Mulai dari sekedar browsing hingga bermain game online. Dengan meningkatnya jumlah pengguna internet, pengembang semakin berlomba-lomba menampilkan sesuatu yang berkualitas. Salah satunya pengembangan platform menggunakan HTML5. HTML5 dimanfaatkan para pengembang untuk menciptakan game yang dimainkan melalui browser terkini. Tidak perlu memasang aplikasi, pengguna hanya butuh terkoneksi internet dan sudah memiliki browser. Pada penelitian ini penulis memilih tema permainan tarik tambang yang merupakan salah satu permainan tradisional Indonesia. Perancangan game tarik tambang berbasis web ini menggunakan HTML5 dan diolah dengan menggunakan Javascript dan PHP.
Sistem Informasi Geografis Lokasi Wisata Kuliner Di Kota Pekanbaru Berbasis Web
Authors: Gunawan Hendra , Suci Prihati Indah Parama Siwi
Published: August 2018

Komputer yang berguna untuk pengolahan data yang rumit di berbagai bidang, dan juga untuk sistem informasi geografis wisata kuliner yang di web di pekanbaru. Agar menjadi lebih efektif dan efisien. Data dan informasi yang sangat berharga bagi suatu organisasi atau perusahaan. Tidak ada sistem pengolahan data dan informasi geografis wisata kuliner di pekanbaru, hal itu menyebabkan orang tidak bisa mengenali wisata kuliner yang ada di Pekanbaru. Sistem informasi geografis wisata kuliner dengan menggunakan aplikasi yang dibuat bahasa pemrograman web berbasis berbasis PHP diharapkan untuk menyediakan fasilitas untuk mengenali wisata kuliner yang ada di Pekanbaru. Hal ini dapat disimpulkan bahwa aplikasi dapat membantu orang terutama orang - orang yang tinggal di Pekanbaru tahu lebih banyak tentang wisata kuliner di Pekanbaru
Sistem Pendukung Keputusan Pemilihan Calon Paskibraka Di Provinisi Riau
Authors: Syafitri Nesi , Prayogi Muhammad , Labellapansa Ause
Published: August 2018

Seleksi Paskibraka Nasional adalah suatu kegiatan yang dilaksanakan oleh Dispora Provinsi Riau. Pada setiap tahunnya  yang bertujuan untuk mencari putra putri terbaik yang akan ditugaskan sebagai pengibar bendera pusaka di Istana Negara pada perayaan Hut RI. Pada seleksi pemilihan calon Paskibraka Nasional masih banyak  terdapat kekurangan. Panitia seleksi Paskibraka Nasional masih menggunakan cara manual dalam menentukan nilai akhir setiap peserta dari seluruh tahapan test yang diselenggarakan. Penilaian tahapan test dengan jumlah peserta yang tergolong banyak akan menyulitkan panitia dalam pertimbangan penilaian dan pengambilan keputusan. Untuk mengatasi masalah itu, diperlukan aplikasi sistem pendukung keputusan yang dapat memberikan informasi penilaian seleksi berdasarkan kriteria penilaian yang telah ditetapkan secara tepat dan akurat.
Seleksi Pegawai Kontrak Menjadi Pegawai Tetap Dengan Metode Profile Matching
Authors: Suherman Suherman , Khairul Khairul
Published: August 2018

Tenaga kerja adalah faktor terpenting dalam manajemen suatu perusahaan. Kualitas tenaga kerja sangat menentukan kemajuan dan perkembangan perusahaan.. Pada saat ini perusahaan secara umum menerapkan sistem kontrak dalam rekrutmen pegawai. Sehingga proses rekrutmen pegawai kontrak merupakan hal yang sangat kritis untuk mendapatkan tenaga kerja yang profesional dan berkualitas. Pegawai kontrak yang dinilai kompeten dan memberikan kontribusi besar layak untuk diangkat menjadi pegawai tetap. Masalah rekrutmen pegawai kontrak menjadi pegawai tetap dapat diselesaikan dengan metode Profile Matching. Metode Profile Matching adalah metode yang mencocokkan profil ideal dengan profil setiap pegawai kontrak. Semakin kecil nilai selisih antara profil ideal dengan profil setiap pegawai (gap), maka semakin besar peluang pegawai kontrak diangkat menjadi pegawai tetap. Metode Profile Matching dapat memberikan rekomendasi terbaik dalam proses rekrutmen pegawai kontrak menjadi pegawai tetap.
Analisis Perbandingan Kinerja Routing OSPF Dan EIGRP
Authors: Novendra Yoldi , Arta Yudhi , Siswanto Apri
Published: August 2018

Dunia teknologi saat ini mengalami perkembangan yang cepat, terlebih pada teknologi internet. Teknlogi internet merupakan sebuah teknologi yang saat ini banyak digunakan oleh manusia untuk berkomunikasi dan mengirim berbagai data dalam jarak yang saling berjauhan dengan cepat. Dalam proses pengiriman data dan komunikasi pada teknologi internet tidak terlepas dari jalur yang digunakan, semakin pendek jalur yang digunakan maka akan semakin cepat data yang dikirim, masalah yang menjadi tolak ukur dalam pembuatan skripsi ini adalah membandingkan 2 (dua) buah routing protokol routing OSPF dan EIGRP memiliki fungsi yang sama yakni melakukan proses routing dimana akan diukur dengan parameter QoS seperti troughput, delay dan paket loss dengan beban pengiriman berupa audio dan video yang diukur dengan aplikasi wireshark. Hasil menunjukkan bahwa routing protocol OSPF memiliki nilai troughput, delay dan paket loss lebih kecil dibandingkan routing EIGRP.
Model Pengenalan Benda Bersejarah Indonesia Bagi Wisatawan Berbasis Augmented Reality
Authors: Erizal Erizal
Published: August 2018

Penelitian ini akan membangun model pembelajaran melalui pengenalan jenis dan bentuk benda bersejarah di Indonesia berbasis 3D dengan konsep augmented reality. Jika diterapkan pada dunia nyata, aplikasi ini akan memudahkan para wisatawan untuk belajar mengenai jenis-jenis benda bersejarah Indonesia melalui gambar interaktif yang terkoneksi dengan aplikasi berbasis jaringan internet.
An Analysis Students’ Motivation in Reading ProcedureText at the First Grade of SMA N Rambah Samo
Authors: Kasyulita Evi , Sari Desi Ratna
Published: August 2018

This research discussed  about  students motivation in reading procedure text at the first grade of SMAN I Rambah Samo.  This research is important  to conducted  because with  analysis students motivasion can  preapared steps to increasing students reading  skill.t The technique of analyzing the data the researcher was  descriptive qualitative. Questionnaire was used to collect the data. The finding showed that there was any significant  analysis  students’ motivation. It could be  showed that from 21 students in reading procedure text, there were10 students (60-79%) in  good, 4 students  (50-59%) and in  poor,and 7 students (0-49) very poor category.
Using IEPC Strategy to Improve Students’ Reading Comprehension at Grade VIII.4 of SMP Negeri 3 Pekanbaru
Authors: Warman Liya Astarilla Dede
Published: August 2018

The purposes of this research are to describe and explain to what extent IEPC strategy could improve students’ reading comprehension at grade VIII.4 of SMP Negeri 3 Pekanbaru and the factors that influenced the change of their reading comprehension by using IEPC strategy at grade VIII.4 of SMP Negeri 3 Pekanbaru. This research is classroom action research, every cycle consisted of four fundamental aspects namely, planning, action, observation, and reflection. This research consisted of three cycle, where in each cycle consisted of fourmeetings. The four meetings in one cycle involving three meetings for teaching reading by using IEPC strategy and one meeting for post-test at the end of every cycle.The participants of this research were the researcher, a collaborator and the students of grade VIII.4 of SMP Negeri 3 Pekanbaru totalling 40 students. The instruments of this research were reading comprehension test, an observation sheet, field note and interview.There were two findings of this research: (1) IEPC strategy could improve the students’ reading comprehension; (2) Teaching material and media, class activity, class management, and teacher’s approach were the factors that could influence the change of students’ reading comprehension.
An Analysis of Teachers’ Strategies in Conducting Speaking Assessments at MTSN Andalan Pekanbaru
Authors: Idayani Andi , Rugaiyah Rugaiyah
Published: August 2018

Teaching speaking is an important part in the language teaching, as well as the assessing speaking. Therefore, teachers need to use some strategies in conducting the assessing speaking. Based on that issue, this research was aimed at exploring teachers’ strategies in assessing speaking skill. To explore the problems, case study with a qualitative approach was adopted. This research employed observation, questionnaire and interview in collecting the data and involved five teachers from MTsNAndalanPekanbaru. The collected data were analyzed by using flow data analysis process of Miles &Huberman (1994). The findings revealed that teachers apply the strategy of conducting the speaking assessment in the classroom which are started from the way they identify current status of classroom speaking assessment, the purpose of their speaking assessment, types speaking assessment, then selecting the teachers’ strategies of speaking assessment and last, teachers’ perceptions of the effectiveness of classroom speaking assessment. In general, teachers implementing some strategies in conducting the speaking assessment. There were discussion and conversation, question and answer, role play, repetition, etc. This research was expected to broaden teachers’ knowledge about strategies in assessing speaking in terms of the purpose and the type of assessment used, then teachers’ perceptions of speaking assessment.
STAD : A Suitable Technique for Increasing Students’ Vocabulary Mastery
Authors: Ilyas Muhammad
Published: August 2018

Increasing students’ vocabulary mastery is not an easy way for English teacher in teaching English in the classroom. To realize the difficulties of increasing students’ vocabulary mastery, the English teacher should consider many strategies of teaching. The strategies that are used should be able to make students feel comfortable and enjoy in the classroom and also should be able to encourage and motivate them to learn. One of the strategies is STAD (Student Teams Achievement Divisions). This research focuses on the implementation of STAD to increase students’ vocabulary mastery. The writer would like to find out whether there is a suitable techniqueor not on students’ vocabulary mastery for junior high school students after applying STAD in teaching and learning process.This research is an experimental study in quantitative research. The research involved two equal qualification of sample groups, they are an experimental group and control group. The instrument that used in this research is vocabulary test.Pre-test were given for both groups, after applying STAD in treatment for experimental group, the pos-test was administered by the two groups, experimental group and control group. The writer found that the mean score of experimental group is 52.59 in pre-test and became 71.66 in post-test and control group is 51.52 in pre-test and became 55.81 in post-test. From the result of mean score from each groups, it can be seen that there is significant improvement from experimental group.Consequently, the useof STAD is more effective to increase vocabulary mastery for junior high school students. And the evidence indicates that teaching English vocabulary by using STAD has significant positive effectand become a suitable technique for increasing students’ vocabulary mastery.
Şanlıurfa’da bir devlet hastanesinde doğum yapmış kadınların doğum öncesi bakım hizmetlerini alma durumu, bu hizmetlerin niteliği ve etkileyen faktörler
Authors: YILMAZ Leyla , KORUK Fatma , KORUK İbrahim
Published: August 2018

Amaç: Çalışma,
Şanlıurfa’da hastanede doğum yapan kadınların Doğum Öncesi Bakım (DÖB)
hizmetlerini alma durumunu, bu hizmetlerin niteliğini ve etkileyen faktörleri
belirlemek amacıyla yapılmıştır. Yöntem:
Araştırma tanımlayıcı tiptedir. Araştırmanın evrenini, Şanlıurfa Eğitim ve
Araştırma Hastanesi postpartum servislerinde doğum yapmış kadınlar
oluşturmuştur. Örnek büyüklüğü; tahmini orantı %48.0, hata sınırı %5 ve %95
güvenle 391 olarak hesaplanmıştır. Veriler, Tanımlayıcı Veri Toplama Formu
aracılığı ile yüz yüze görüşme yöntemiyle toplanmıştır. Araştırma için Harran
Üniversitesi Etik Kurul'undan yazılı, katılımcılardan ise sözlü izin
alınmıştır. Verilerin değerlendirilmesinde; tanımlayıcı istatistiklerden yüzde,
ortalama, standart sapma, tek değişkenli analizlerden Ki-kare ve Man Whithney-U
testi kullanılmıştır. Bulgular: Çalışmada
kadınların %93.6’sı DÖB hizmeti almıştır. 
Kadının yaşı, evlilik süresi, gebelik sayısı, düşük sayısı, çocuk
sayısı,  iki yıldan kısa aralarla doğum yapma durumu ve sayısı
arttıkça DÖB hizmetini alma düzeyinin düştüğü, kadının ve eşinin eğitim düzeyi
arttıkça DÖB hizmeti alma düzeyinin arttığı belirlenmiştir. Ayrıca mevsimlik
tarım işçilerinde DÖB alma düzeyinin düşük olduğu belirlenmiştir. Kadınların
%80.6’sı nitelikli DÖB almıştır. Aile Sağlığı Merkezinden DÖB hizmetleri
alanların nitelikli bakım düzeyleri daha yüksektir. Sonuç: DÖB hizmetlerini alma düzeyi Türkiye ve Güneydoğu Anadolu
Bölgesi’nden düşüktür. DÖB hizmeti alma düzeyini pek çok faktör etkilemektedir.
DÖB hizmeti alımı ilk sırada devlet hastanesinden olmakla birlikte nitelikli
DÖB hizmeti aile sağlığı merkezlerinde daha yüksek düzeyde verilmektedir.
Caracterización de un brazo mecánico tipo Scara con sistema de control multifrecuencial y posicionamiento Bresenham
Authors: Pineda Torres Fraklin , Chica Leal Alonso De Jesús , Camacho Carvajal Alex
Published: August 2018

Los sistemas de codificación a doble tono multifrecuencial DTMF utilizados en gran parte sobre la comunicación celular móvil, nos permite en el proyecto, controlar remotamente un brazo mecánico tipo Scara de dos grados de libertad. Al constituir los parámetros relevantes del brazo tal y como: el estudio de la geometría del brazo, sensores, actuadores, área de trabajo, energía requerida y en general su cinemática directa e inversa, se obtiene la posibilidad de implementar el algoritmo de Bresenham sobre un microcontrolador PIC 18F458; encargado de decodificar las señales DTMF

provenientes de las variables x,y dadas por un usuario remoto. Código funcional dentro del robotic toolbox de Matlab® y HEMERO nos permite visualizar y simular el comportamiento del brazo en función del tipo de articulaciones, grados de libertad, dimensiones y parámetros dinámicos conocidos de las trayectorias a realizar.
Atomic-emission determination of the macro composition of the catalyst of methanol synthesis with a photoelectric spectrum analyzer
Authors: Toropov L. I. , Mokrushina E. R.
Published: August 2018

The possibility of atomic-emission determination of the main components in powder samples with spectra excitation in an AC arc is studied. An arc source of excitation is actually used mainly in approximate-quantitative emission spectral analysis of geological objects for determination of the main components. The goal of the study is to reduce the error of determination of the macro components of the samples when using the aforementioned procedure. The object of the study is a zinc-aluminum-copper catalyst. The spectra are recorded on a DFS-458Cautomated atomic-emission spectrometer. A photoelectron attachment FEP-454 with a CCD-array (Toshiba) is used as a radiation detector in the spectrometer. FEP-454 boasts a system of dynamic accumulation which provides more efficient simultaneous determination of the impurity and sample base components. A calibration curve was constructed using model mixtures for quantitative determination of the matrix elements in real samples. It is shown that the mutual impact of the matrix elements in the arc discharge is almost completely leveled by 16-fold dilution of the samples with a spectrographic buffer. The results of the study prove the possibility of using arc atomic emission analysis for determination both micro- and macro-components in powder samples with a satisfactory accuracy.
Modelling of electromagnetic properties of multicomponent material
Authors: Krylov V. P.
Published: August 2018

Current theories of heterogeneous media consider non-uniform materials as natural and artificially synthesizable structures. Nowadays, synthesis of the non-uniform multicomponent materials with given electrodynamic properties and characterized by magnetic and dielectric permeability, is gaining increasing development. When modeling a multicomponent structure as a uniform material with effective dielectric permeability (ignoring the magnetic properties) using the developed models for the components with known dielectric permeability, the errors arise in calculation of the transmission coefficient of a plane wave through the antenna dome wall. We present a heuristic model based on the laws of optics which is intended for simultaneous determination of the effective magnetic and dielectric permeability of multicomponent material in contrast to known models describing statistically non-uniform media only for one electrodynamic parameter. The electrodynamic model developed for description of the effective magnetic and dielectric permeability of non-uniform material suggests a possibility of characterizing a polarized material with the total dipole moment arising in alternating field and expressing the Brewster angle as a the sum of the polarization angles proportional to volume content the mixture components.
Modeling of corrosive atmospheres for evaluation of the efficiency of volatile inhibitors
Authors: Vigdorovich V. I. , Tsygankova L. E. , Shel E. Yu. , Shel N. V. , Knyazeva L. G. , Dorokhov A. V. , Uryadnikov A. A.
Published: August 2018

A method of modeling aggressive atmospheres used for different tests in corrosive environments close as possible to actual full-scale conditions is proposed. The method provides simulation of air atmospheres containing gaseous corrosion stimulants (CS) as microcomponents of air. The content of SCs in such atmospheres (both separately and together) can be set and maintained at an unchanged level within a wide range for as long as desired. The method is based on Henry’s equation characterizing concentration of the gas dissolved in a liquid phase as a function of the gas partial pressure in the equilibrium gas medium with allowance for the solubility of the corrosion stimulants in water in conditions under consideration. The procedure is easy to use and does not require long special training. Samples of corrosion stimulants NH3, CO2, and H2S are considered. Experimental results characterizing the corrosion rate of St3 carbon steel and copper with one or several CS simultaneously present in air atmosphere, as well as data on the efficiency of volatile inhibitors of «IFHAN» series under similar conditions are presented.
Scalar measure of the interdependence between random vectors
Authors: Tyrsin A. N.
Published: August 2018

The problem of assessing tightness of the interdependence between random vectors of different dimensionality is considered. These random vectors can obey arbitrary multidimensional continuous distribution laws. An analytical expression is derived for the coefficient of tightness of the interdependence between random vectors. It is expressed in terms of the coefficients of determination of conditional regressions between the components of random vectors. For the case of Gaussian random vectors, a simpler formula is obtained, expressed through the determinants of each of the random vectors and determinant of their association. It is shown that the introduced coefficient meets all the basic requirements imposed on the degree of tightness of the interdependence between random vectors. This approach is more preferable compared to the method of canonical correlations providing determination of the actual tightness of the interdependence between random vectors. Moreover, it can also be used in case of non-linear correlation dependence between the components of random vectors. The measure thus introduced is rather simply interpretable and can be applied in practice to real data samplings. Examples of calculating the tightness of the interdependence between Gaussian random vectors of different dimensionality are given.
An effective design method for mechanical metamaterials with negative Poisson’s ratios
Authors: Xu Jie , Li Hao , Xiao Mi , Gao Liang
Published: August 2018

In this paper, we propose a new method for the design of mechanical metamaterials by integrating the parametric level set method (PLSM) with the energy-based homogenization method (EBHM), where the topologies and shapes of material microstructures periodically distributed in the bulk material are optimized simultaneously. Firstly, material effective properties are evaluated by the EBHM under the topologies of material microstructures, where the average stress and strain theorems work as the basic theoretical framework rather than the asymptotic theory. Secondly, under the definition of the objective to seek for the negative Poisson’s ratios, the PLSM is employed to evolve the topologies of microstructures until the bulk material is to be featured with negative Poisson’s ratios. Several numerical examples for microstructures considering the orthotropy and isotropy are performed. A series of new and interesting material cells with negative Poisson’s ratio are obtained.
Editorial
Authors: Machado Ana Raquel
Published: August 2018

Editorial
O sistema hidráulico superior na arquitetura sacra gótica. Casos de estudo em Lisboa
Authors: Alho Ana Patrícia
Published: August 2018

O presente texto vem na sequência da tese de doutoramento que nosdefendemos na Faculdade de Letras da Universidade de Lisboa, sob o tema: “O sistema hidráulico na arquitetura sacra gótica em Portugal dos séculos XIII a XVI”. Esteprojeto parte de um conceito de arquitetura entendida como um conjunto estruturado de sistemas que, faseadamente, constituem preocupação do mestre construtor. Neste conjunto de sistemas está incluído o sistema hidráulico que dividimos em subsistema hidráulico superior e subsistema hidráulico inferior, sendo que neste caso específico só nos iremos referir ao primeiro subsistema evocado. No que diz respeito ao subsistema hidráulico superior dividimos o mesmo por soluções encontradas em diversos edifícios pertencentes à arquitetura gótica e tardogótica portuguesa e estrangeira, para com isto podermos concluir quais as soluções mais adotadas e os elementos aqui tectónicos mais usados como auxiliares do sistema hidráulico superior.

Neste artigo propomo-nos a focar a nossa atenção para o sistema hidráulico superior presente em Lisboa: Mosteiro de Santa Maria de Belém, Ermida de S. Jerónimo, Igreja da Conceição a Velha e Catedral de Lisboa.
A atividade litúrgico-musical no convento de Nossa Senhora dos Remédios de Évora: o seu papel na paisagem sonora da cidade durante o século XVII
Authors: Henriques Luis
Published: August 2018

O convento de Nossa Senhora dos Remédios de carmelitas descalços está localizado no exterior das muralhas de Évora. O edifício atual fora das muralhas foi fundado no início do século XVII e viu uma atividade contínua, apesar de ter sido ocupado pelas tropas espanholas durante a Guerra da Restauração em 1663. A sua localização junto com a fundação recente trouxe uma atividade litúrgico-musical a uma parte relativamente sossegada da cidade. Seguindo os estudos sobre as paisagens sonoras das instituições religiosas, este estudo pretende retratar a implantação desta casa religiosa em Évora durante o século XVII focando atividade litúrgico-musical da comunidade e os eventos religiosos que ali tiveram lugar, rodeados por música. Ao mesmo tempo é dada atenção à uma inclusão da comunidade de carmelitas descalços na dinâmica religiosa da cidade, enquanto local de comunicação urbano através das procissões e outras festividades que tinham o convento como palco principal.
Preservando a Pauliceia: DPH, CONPRESP e o património paulistano
Authors: Ferreira Luis Gustavo Pereira
Published: August 2018

Este artigo apresenta os processos de criação dos dois órgãos de preservação do património da cidade de São Paulo, o DPH e o CONPRESP, criados em 1975 e 1985, respetivamente. Pensando o patrimônio paulistano como “herdeiro” do Departamento de Cultura, surgido na década de 1930 e partindo dos documentos legais que balizaram a criação destes dois órgãos, mas não nos limitando a eles, refizemos o percurso do processo de elaboração e circulação dos projetos de criação dos órgãos, os sujeitos envolvidos neste processo, as instituições que foram seu palco e os objetivos e conceções de patrimônio que os nortearam. Por fim, pensamos os desafios a que estão submetidos atualmente, suas dificuldades e avanços e as perspetivas de atuação no próximo período.
Fundo de Garantia Salarial – O prazo para requerer o pagamento dos créditos laborais e a sua (in)compatibilidade com o Direito Comunitário e a Constituição
Authors: Castelo Branco Inês
Published: August 2018

O NRFGS passou a prever que o FGS só assegura o pagamento dos créditos laborais quando o pagamento lhe seja requerido até um ano a partir do dia seguinte àquele em que cessou o contrato de trabalho (art.o 2.o, n.o 8). Esta alteração consubstancia uma alteração do prazo anterior, previsto no art.o 319.o, n.o 3 da RCT, porque o atual deixou de estar indexado ao prazo de prescrição dos créditos laborais, e, consequentemente, deixou de poder aproveitar as causas de interrupção deste. Os nossos tribunais têm sido chamados a dirimir litígios relacionados com a alteração deste prazo, mas, salvo o devido respeito, de maneira não totalmente satisfatória. A nosso ver, a referida norma não é compatível com a Diretiva 2008/94/CE, por violação do princípio da efetividade, nem com o art.o 59.o, n.os 2 e 3 da CRP.
Revista NAUS
Authors: Ditora Ponte
Published: August 2018

Revista completa.
Production Function, Institutional Credit and Agricultural
Development in Pakistan
Authors: Zuberi Habib A.
Published: August 2018

This study, based on the time-series data covering the period
from 1956 to 1986, estimates production function in the agricultural
sector of Pakistan. The strategy for agricultural development in the
country has been based on greater utilization of "high pay-off' low-cost
technology. The government advanced loans through financial institutions
to make it possible for the farmers to acquire this technology. Despite
the infusion of seed-fertilizer technology, per acre yield of major
crops like wheat, rice, cereal and sugar-cane in Pakistan is lower than
in most LDCs in the region. Therefore, it is concluded that the use of
present technology has reached a plateau and it is time to look for
additional inputs for improvement in productivity.
S. Chandrasekhar (ed.). From India to Canada. A Brief History of
Immigration; Problems of Discrimination; Admission and Assimilation. La
Jolla, California: A Population Review Book, 1986.217 pp.US $ 25.00
Cloth, US $10.00 Paperback.
Authors: Krotki Karol J.
Published: August 2018

S. Chandrasekhar (ed.). From India to Canada. A Brief History
of Immigration; Problems of Discrimination; Admission and Assimilation.
La Jolla, California: A Population Review Book, 1986.217 pp.US $ 25.00
Cloth, US $10.00 Paperback. Hubert CharboJUleau, Bertrand Desjardins,
Andre Guilemette, Yves Landry, Jacques Legare and Francom Nault.
Naissance d 'une Population. Les Francais etablis au Canada au XVIIe
siecle. Paris, France: Institut Nationala d'Etudes Demo· graphiques,
Presses Universitaires de France. Montreal: Presses de l'Universite de
Montreal, 1987. viii +232 pp + 3 folded graphs and maps. Fr francs 60.00
Paperback. Art Hansen and Anthony OJiver-Smith (eds.). Involuntary
Migration and Resettlement. The Problem and Responses of Dislocated
People. Boulder, Colorado: West· view Press, 1982. xi + 333 pp.US $
25.00 Cloth. Hania Zlotnik and Silvano M. Tomasi (eds.). International
Migration Review: Measuring International Migration: Theory and
Practice. Special Issue in cooperation with International Union for the
Scientific Study of Population. Vol. 21, No.4. Winter 1987. xii + 689
(925-1613) pp.
Shorter Notices
Authors: Staff PIDE
Published: August 2018

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