bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multi-objective optimal reconfiguration of distribution network
Authors: Šošić Darko , Stefanov Predrag 
Published: June 2018

Abstract
Configuration of distribution system can be changed manually or automatically, by changing the status of the respective switching elements, with the aim of reducing power losses, increase system reliability, or improving the power quality. When changing the status of switching equipment it is necessary to satisfy the requirement for the radial and connected structure of the distribution network. Using the single criteria optimization it is possible to improve one of the characteristics of the distribution network, on the other hand by using multicriteria optimization it is possible to find a network configuration that enhances multiple distribution system characteristics at the same time. In this paper, a modification of the multi-criteria Gray Wolf optimization algorithm is proposed in order to create an efficient algorithm that can be implemented in the management functions of smart grid concept of modern distribution systems. The proposed reconfiguration algorithm was tested on standard symmetrical IEEE 33 test distribution network.
Wind speed prediction with RBF neural network based on PCA and ICA
Authors: Zhang Yagang , Zhang Chenhong , Zhao Yuan , Gao Shuang 
Published: June 2018

Abstract
Thanks to non-pollution and sustainability of wind energy, it has become the main source of power generation in the new era worldwide. However, the inherent random fluctuation and intermittency of wind power have negative effects on the safe and stable operation of power system and the quality of power. The key solving this problem is to improve the accuracy of wind speed prediction. In the paper, considering the forecasting accuracy is affected by many factors, we propose that, Principal Component Analysis (PCA) is combined with Independent Component Analysis (ICA) to process the sample, which can weaken the mutual interference between the various factors, extract accurately independent component reflected the characteristics of wind farm and achieve the purpose of improving the accuracy of wind speed prediction. At the same time, the adaptive and self-learning ability of neural network is more suitable for wind speed sequence prediction. The prediction results demonstrate that compared with the traditional neural network predicting model (RBF, BP, Elman), this model makes full use of the information provided by varieties of relevant factors, weakens the volatility of wind speed sequence and significantly enhances the short-term wind speed forecasting accuracy. The research work in the paper can help wind farm reasonably arrange the power dispatching plan, reduce the power operation cost and effectively boost the large-scale development and utilization of renewable energy.
Start-up of large-power synchronous motor with the 6 kV voltage source inverter and microprocessor-controlled unit for excitation supply
Authors: Hyla Marian 
Published: June 2018

Abstract
The paper presents idea and practical implementation of a medium voltage synchronous drive with a voltage source inverter in the stator circuit and a microprocessor controlled unit for excitation supply. Construction of both devices was presented, and methods of their cooperation were described. Selected start-up methods of large power synchronous motors were presented. Exemplary realization was discussed. Measurement results of the direct full-voltage start-up and frequency start-up of a real 1.25 MW 6 kV fan drive system were compared and discussed.
Properties of Fe-based nanocrystalline magnetic powder cores (MPC) and structure of particle size distribution (PSD)
Authors: Grybos Dominik , Leszczynski Jacek S. , Kwiecień Marcin , Swieboda Cezary , Lasak Patryk , Pluta Wojciech , Rygal Roman , Soinski Marian 
Published: June 2018

Abstract
This paper discusses the influence of the Particle Size Distribution (PSD) of the nanocrystalline Fe-based granular-soft-magnetic material on the final magnetic properties of a Magnetic Powder Core (MPC). Here we show how PSD impacts the final magnetic properties. Mixing fine and coarse particles, with a dominance of coarse particles, significantly influences the magnetic permeability increase of the core. Better magnetic features are noted for MPCs constructed with certain mass ratio of fine and coarse particles due to improvement in the magnetic path in the cores. This allows to offer new induction components to industry.
Screen printed and laminated electrodes for low-cost capacitive level measurement systems
Authors: Kulha Pavel , Hilber Wolfgang , Laposa Alexandr , Jakoby Bernhard 
Published: June 2018

Abstract
The fabrication procedure and characterization of low-cost electrodes for capacitive level sensors realized on a flexible substrate are presented in this paper. The aim was to prepare conductive electrodes by printing of silver and PEDOT:PSS pastes on coated PET foil. Individual interdigital capacitors and a system with embedded microcontroller readout were designed for a comparative study. Individual capacitors in the form of interdigital electrodes (IDT) were designed with different finger width/spacing dimensions from 300/300 μm to 800/800 μm, a finger length 10 mm and 15 mm and an overall length of 100 mm. A demonstrator device featuring an integrated microcontroller, sensing and reference capacitive sensors and a resistive temperature sensor was realized to proof a practical utilization. The microcontroller is used to calculate capacitances of IDT electrodes in terms of charging time proportional to the fluid level. The design with reference capacitor can be directly applied to different fluids with a wide range of conductivities and dielectric constants without recalibration. The printed structures were thermally laminated with covering PET foil. The sensitivity of the fabricated devices was characterized in liquids with different relative permittivity and conductivity (water and oil). The highest measured sensitivity was 0.7 pF/mm and 0.08 pF/mm for water and oil respectively, with resolution down to 0.1 mm.
Quaternion-valued single-phase model for three-phase power system
Authors: Gou Xiaoming , Liu Zhiwen , Liu Wei , Xu Yougen , Wang Jiabin 
Published: June 2018

Abstract
In this work, a quaternion-valued model is proposed in lieu of the Clarke’s α, β transformation to convert three-phase quantities to a hypercomplex single-phase signal. The concatenated signal can be used for harmonic distortion detection in three-phase power systems. In particular, the proposed model maps all the harmonic frequencies into frequencies in the quaternion domain, while the Clarke’s transformation-based methods will fail to detect the zero sequence voltages. Based on the quaternion-valued model, the Fourier transform, the minimum variance distortionless response (MVDR) algorithm and the multiple signal classification (MUSIC) algorithm are presented as examples to detect harmonic distortion. Simulations are provided to demonstrate the potentials of this new modeling method.
Stimulus response compatibility affects duration judgments, not the rate of subjective time
Authors: Varakin Alexander , Renfro Amanda , Hays Jason 
Published: June 2018

Abstract
The current experiments examined whether non-temporal associations can affect duration judgments without affecting the rate of subjective time. In both experiments, participants performed a temporal bisection task, judging on each trial whether stimulus’ duration was closer to pre-learned short or long standards. In each experiment, the spatial compatibility between stimuli and responses was manipulated. In both experiments, stimulus-response compatibility (SRC) affected duration judgments: stimuli that were spatially compatible with the key used for long judgments elicited long responses at shorter objective durations than stimuli that were compatible with the key used for short judgments. The size of SRC’s effect did not depend on the magnitude of the standard durations and SRC’s effect was magnified even when SRC was introduced after the relevant temporal interval had ended. Thus, these findings are consistent with the idea that duration judgments can be affected without influencing the rate at which subjective time passes.
Priming effects in the recognition of simple and complex words and pseudowords
Authors: Lázaro Miguel , Illera Víctor , Sainz Javier 
Published: June 2018

Abstract
Whether morphological processing of complex words occurs beyond orthographic processing is a matter of intense debate. In this study, morphological processing is examined by presenting complex words (brujería -> brujo –witchcraft -> witch), as well as simple (brujaña->brujo) and complex pseudowords (brujanza ->brujo), as primes in three masked lexical decision tasks. In the first experiment, the three experimental conditions facilitated word recognition in comparison to the control condition, but no differences emerged between them. Given the importance of the surface frequency effect observed, a second experiment was conducted. The results fully replicate those observed in the first one, but this time with low frequency targets. In the third experiment, vowels were removed from the stems of primes to reduce the orthographic overlap between primes and targets and, therefore, the influence of the embedded stem effect. The results show facilitative effects only for complex words. However, paired comparisons show no differences between experimental conditions. The overall results show the central role played by the processing of stems in visual word recognition and are explained in terms of current models of morphological processing.
Electroencephalographic and skin temperature indices of vigilance and inhibitory control
Authors: Lara Tania , Molina Enrique , Madrid Juan Antonio , Correa Ángel 
Published: June 2018

Abstract
Neurophysiological markers of the ability to sustain attention and exert inhibitory control of inappropriate responses have usually relied on neuroimaging methods, which are not easily applicable to real-world settings. The current research tested the ability of electroencephalographic and skin temperature markers to predict performance during the Sustained Attention to Response Task (SART), which demands vigilance and inhibitory control. In Experiment 1, we recorded the electroencephalogram (EEG) during the performance of SART and found that event-related potentials underlying inhibitory control (N1 and N2/P3) were influenced by a time on task effect, suggesting a decrement in attentional resources necessary for optimal inhibitory control. In Experiments 2 and 3, we recorded skin temperatures (distal, proximal and the distal-proximal temperature gradient –DPG) and found that they were sensitive to differential demands of mental workload, and that they were related to behavioural performance in the SART. This study suggests that the recording of EEG and skin temperature may be used to monitor fluctuations of attention in natural settings, although further research should clarify the exact psychological interpretation of these physiological indices.
Bioindication of Water Properties by Algal Communities in the Pamir High Mountain Mineral and Thermal Springs
Authors: Niyatbekov Toirbek , Barinova Sophia 
Published: June 2018

Abstract
The bioindication methods have been implemented for the first time for the analyses of water properties in six mineral and thermal springs of Pamir. The studied environment was characterized as flow-alkaline, well oxygenated with low salinity, and low to middle organically polluted. Studied diatom communities preferred periphytonic and benthic habitats of temperate temperature waters. Bioindicator species preferred photosynthetic way of protein synthesis. In first time assessed the trophic level of each studied source show that all they have a state from oligotrophic to mesotrophic. Bioindication methods revealed the effectiveness of nature conservation system in Tajikistan and relevance of bioindication methods using in purpose of assessment and monitoring of water sources on the protected territories.
Aquatic Macrophyte Communities of the Gorgova-Isac-Uzlina Area (Danube Delta, Romania)
Authors: Schneider-Binder Erika 
Published: June 2018

Abstract
With its diversity of water body types, the Danube Delta offers large possibilities for studies of aquatic macrophytes, their ecological requirements, ecological amplitude and communities. Sensitive to changes in water quality and physical parameters due to human intervention in the natural ecological network, aquatic macrophytes are used as quality indicators. Using the example of the system of channels and lakes of the Gorgova-Isac-Uzlina complex and some examples from the neighboring area, the aquatic macrophytes and their communities are presented and discussed in relation to the characteristics of the habitats and the changes of the environment in the course of decades, since human intervention in the delta.
Land Snail Communities in Limestone Gorges from the Southern Part of the Metaliferi Mountains (Apuseni Mountains, Romania)
Authors: Gheoca Voichiţa , Popescu Lorena 
Published: June 2018

Abstract
This study focuses on terrestrial gastropod communities in a karst area, where the presence of water and the limestone generates favourable environment for land snails. Three limestone gorges were analysed located in the southeast of the Metaliferi Mountains. Four different habitats in three limestone gorges were analysed – Glodului, Cibului and Mada. A total of 42 species of land snails were identified. The terrestrial gastropod communities in the area are dominated by calciphile species, such as Granaria frumentum, Truncatellina cylindrica and Alopia bielzii madensis. The differences between the analysed habitats are not pronounced enough to be reflected in the structure of the snail communities. Significant positive correlation was found between the abundance of land snails and the habitat exposure.
Technical Solutions to Mitigate Shifting Fish Fauna Zones Impacted by Long Term Habitat Degradation in the Bistra Mărui River – Study Case
Authors: Bănăduc Doru , Voicu Răzvan , Baumgartner Lee Jason , Marić Saša , Dobre Alexandru , Curtean-Bănăduc Angela 
Published: June 2018

Abstract
The Bistra Mărului River fish fauna has been severely impacted by man-made activities, especially through longitudinal fragmentation, over the past 40 years. Fish fauna monitoring revealed structural changes and technical methods have been proposed, in order to restore the natural connectivity and the conservation of fish species. Benefits should accrue for key species: Salmo trutta fario, Cottus gobio, Thymallus thymallus, Eudontomyzon danfordi, Eudontomyzon vladykovi, Gobio uranoscopus, Barbus meridionalis, and Condrostoma nasus.
Pengembangan Perangkat Pembelajaran Pembuktian Menggunakan Model Pembelajaran Guided Inquiry untuk Meningkatkan Kemampuan Geometri Siswa Sekolah Menengah Atas
Authors: Hamimi Lia , Ikhsan M. , Abidin Zainal 
Published: June 2018

Mathematical proof is one aspect that must be considered in learning mathematics in school. One of the obstacles that students experience on geometry is the difficulty of constructing proof. The specific learning materials are not available yet. To achieve that goal required a learning materials for teaching mathematical proof using Guided Inquiry model. This research is a developmental research using ADDIE model consisting of five stages, namely Analyze, Design, Development, Implementation, and Evaluation stage. The experimental subjects in this study were one class of students at year 12 at one of senior high school at Banda Aceh. Based on the results obtained that the learning materials consisting of lesson plan, students’ worksheet, handout, and test are categorized as valid, practical, and effective. The recommandation of this study is learning materials can be implemented for teaching mathematical proof in senior high school.
PERUBAHAN SOSIAL BUDAYA DESA PURWODADI KECAMATAN BARAT KABUPATEN MAGETAN TAHUN 1990-2010
Authors: Setiawati Debi , Sanjoyo Warih Yudo 
Published: June 2018

Penelitian ini bertujuan untuk mengungkap perkembangan sosial budaya Desa Purwodadi Kecamatan Barat Kabupaten Magetan tahun 1990-2010. Jenis penelitian deskriptif kualitatif. Data dikumpulkan dengan teknik observasi, wawancara mendalam, mencatat dokumen dan arsip. Validitas data diperoleh melaui trianggulasi sumber, dan teknik. Analisis data yang digunakan adalah analisis interaktif.Â Hasil penelitian menunjukkan bahwa sebelum tahun 1990-an hampir seluruh masyarakat Desa Purwodadi menggantungkan kehidupannya pada sektor pertanian. Perubahan sosial diawali dengan semakin menyempitnya lahan pertanian serta sektor pertanian tidak lagi menjanjikan kemapanan status sosial. Yang dilakukan masyarakat Purwodadi adalah menyewakan lahan kepada penyewa perorangan maupun PG Purwodadie. Struktur sosial perlahan mulai berubah. Nilai-nilai sosial gotong royong mulai luntur. Satu-satunya yang masih tersisa adalah tradisi Bersih Desa. Desa Purwodadi sebagai bekas pusat Pemerintahan Kadipaten Purwodadi yang berlatar belakang agama Islam membawa dampak pada tumbuh dan berkembangnya kesenian-kesenian yang bernafaskan Islam, antara lain terbang, gembrung, dan jedor. Kesenian-kesenian tersebut pernah ada di Desa Purwodadi sebelum tahun 1990-an, saat ini mulai tergeser oleh bentuk-bentuk kesenian modern yang lebih mementingkan aspek hiburan.
Rekonsiliasi Konflik Antarperguruan Silat di Madiun (Studi Historis Sosiologis)
Authors: Soebijantoro Soebijantoro , Nurcahyo Abraham , Hartono Yudi 
Published: June 2018

Penelitian ini bertujuan untuk: 1) Mengungkap akar penyebab konflik antarperguruan silat di Madiun; 2) Mengidentifikasi momentum-momentum dan tempat yang sering menjadi arena konflik; 3) Mengidentifikasi potensi-potensi integrasi yang dapat diberdayakan sebagai media penyelesaian konflik; 4) Merumuskan kerangka teoretik rekonsiliasi yang dapat diterapkan untuk menangani konflik antarperguruan silat di Madiun. Jenis penelitian deskriptif kualitatif. Data diperoleh dengan wawancara mendalam, observasi langsung, mencatat dokumen dan arsip. Data diperoleh melalui wawancara mendalam, observasi langsung, mencatat dokumen dan arsip. Validasi data dilakukan melalui teknik triangulasi sumber, teknik, dan peneliti. Analisis data dilakukan dengan teknik analisis interaktif. Hasil penelitian menunjukkan bahwa konflik melibatkan faktor-faktor historis yang berdampak pada situasi sosiologis. Faktor historis berakar dari perbedaan pendapat guru-murid generasi awal dalam pengembangan Perguruan Setia Hati. Saat itu konflik masih pada fase latensi dimana perbedaan masih dapat diterima. Konflik bereskalasi pasca Peristiwa G30S ketika terjadi bentrok antarpendekar SH Terate dengan SH Winongo, meskipun keduanya bukanlah partisan dalam peristiwa tersebut. Hubungan mulai memburuk dan stereotip negatif mulai berkembang. Konflik semakin meluas sejak tahun 1990-an ketika jumlah anggota baru keduanya semakin meningkat. Pelanggaran etika perguruan mulai merebak karena tidak adanya sanksi organisatoris. Kekerasan mudah meletus dan melibatkan massa pendukung yang banyak. Konflik memasuki fase terjebak. Berbagai momentum yang sesungguhnya memiliki spirit yang sama seperti Suran Agung, Halal bihalal, dan pengesahan anggota baru justru menjadi arena konflik. Karakteristik konflik menentukan cara-cara penyelesaiannya. Tindakan pengamanan untuk menghentikan kekerasan cukup efektif dilakukan aparat. Namun demikian, suasana sosiopsikologis di tingkat bawah belum banyak berubah. Rekonsiliasi dengan pendekatan kultural menjadi pilihan. Arena-arena integrasi seperti Festival Pencak Seni Tradisi diberdayakan sebagai media rekonsiliasi dengan pendekatan kultural. Rekonsiliasi kultural merupakan upaya rekonsiliasi dengan memberdayakan unsur-unsur budayaÂ dan sosial yang dapat menjadi perekat bersama untuk menciptakan suasana dialogis dan harmonis melalui cara-cara proeksistensi yang terjelmakan ke dalam tindakan dan aksi-aksi nyata dalam berbagai peristiwa kehidupan.
Anomali Desentralisasi Etnisitas Memancing Disintegrasi?
Authors: W. Pranoto Suhartono 
Published: June 2018

Pelaksanaan desentralisasi yang meluas memunculkan akibat-akibat yang tidak diharapkan. Munculnya gejala etnosentrisme yang menimbulkan sparatisme mengawali keraguan pusat pemerintahan untuk mengurangi kebebasan kewenangan desentralisasi seperti kerusuhan, korupsi, oligarki, politik dinasti, yang semua itu sebenarnya sudah berlangsung di pusat pemerintahan, tetapi kemudian diimitasi dan menyebar ke daerah. Kejadian ini semua membuat keraguan desentralisasi yang mereduksi secara involutif dari nasionalisme kembali ke etnosentrisme. Menguatnya etnisitas dapat memancing disintegrasi.Â Selama ada komitmen kuat dari daerah-daerah lewat local wisdom yang sudah ditransformasikan ke dalam nasiosentrisme, maka regionalism dapat ditanggulangi dan nasionalisme tetap terjaga. Dengan demikian etno-character menjadi penyangga nation-character yang melanggengkan unity in diversity. Revitalisaswi karakter bangsa mutlak harus dilakukan. Pancasila harus diajarkan kembali karena sila-sila didalamnya mengajarkan kepada manusia baru Indonesia untuk rukun dan gotong royong dalam kebersamaan. Bhinneka Tunggal Ika tetap membingkai kebersamaan.
KEMEJA (KEMAH KERJA SEJARAH) SEBAGAI MODEL PEMBELAJARAN SEJARAH YANG AKTIF, INOVATIF, KREATIF, EFEKTIF, DAN MENYENANGKAN
Authors: Hanif Muhammad 
Published: June 2018

Pembelajaran sejarah masih dilingkupi oleh berbagai stereotip negatif seperti membosankan, bertele-tele dan tidak relevan dengan konteks sosial peserta didik. Relevansi penyajian materi sejarah dengan situasi sosial peserta didik sering dipertanyakan. Kondisi itu mengisyaratkan semakin pentingnya pembelajaran sejarah yang kontekstual sehingga terbangun suasana pembelajaran sejarah yang aktif, inovatif, kreatif, efektif, dan menyenangkan.Â Penelitian ini bertujuan untuk mengungkap kemah kerja sejarah sebagai model pembelajaran sejarah yang aktif, inovatif, kreatif, efektif, dan menyenangkan. Penelitian dilakukan di Program Studi Pendidikan Sejarah IKIP PGRI MADIUN. Jenis penelitian deskriptif kualitatif. Data diperoleh dari sumber primer dan sekunder berupa keterangan atau fakta dari informan, dan peristiwa atau aktivitas serta dokumen dan arsip tentang yang relevan. Pengumpulan data primer dilakukan dengan teknik wawancara mendalam dan observasi langsung. Sampel informan dipilih secara selektif dan mengalir. Validasi data melalui triangulasi sumber dan teknik. Analisis data dengan analisis interaktif.Â Hasil penelitian menunjukkan bahwa rancangan model Kemeja terdiri dari empat komponen kegiatan utama, yaitu persiapan, pelaksanaan, evaluasi, refleksi, dan pelaporan. Tahap persiapan meliputi persiapan di kampus dan di lapangan, baik teknis maupun non teknis. Tahap pelaksanaan terdiri dari tiga kegiatan, yaitu klarifikasi dan eksplorasi objek, social mapping, debat mahasiswa, dan pertunjukkan seni. Model Kemeja potensial untuk menjadi alternatif pembelajaran sejarah yang aktif, inovatif, kreatif, efektif, dan menyenangkan.