bluuebunny/crossref_metadata_2025 huggingface dataset:
Contribution to the study of some aspects of pollination in six varieties of apricot in the region of M'sila (Algeria)
Authors: R. Benmehia H. Bendif, , A. Zedam F. Bahlouli, S. Tellache, A. Slamani
Published: December 2017

The present work consists in contributing to the study of pollination. Field observations and tests were carried out on six varieties of apricot in the region of M'sila, "Pavit", "Boulida" "Alarbi","Tounsi","Ben sarmouk" and "Louzi rouge". For natural self-pollination, the branches were covered to avoid cross-pollination, and the fruit set was determined. Controlled pollination was carried out using pollen and pollen from the other trees that bloom at about the same time. The fruit set rate was determined after counting the fruits in relation to the number of blooming flowers. The rate of fruit set varies from one variety to another. Alarbi with 62.5%, Louzi with 69.7%, Tounssi with 56.5%, Bulida with 50.7%, Ben Sermouk with 23.2% and Pavit with 45.8%. The bagging rate of the bagged branch obtained at the end of the physiological fall did not show any significant differences between the varieties and ranged between 77.50% for Alarbi and 41.22% for Pavit. The results show that the number of fruits after manual crossing is zero for all crops. All varieties tested are self-compatible and no cross-compatibility group has been guessed on the tested growths, from self-pollination and inter-pollination.
Jaminan Konstitusionalitas Hak Asal Usul Masyarakat Hukum Adat di Sumatera Barat
Authors: Alia M. Ikhsan
Published: December 2017

Post-authoritarian Indonesia guaranteed the protection of Indegeneous People are accelerated on behalf of Indonesian Constitution UUD NRI 1945. Coherently, the Constitution obligated the government to emerged an effective and comprehensive regulation to protect traditional ethnic alongside their cultural rigjhts. As the consequences, state obligated all stakeholder included local government to reformulate legal platform as the implementation of UUD 1945 mandate. In the historical and political aspect, existence of in degeneous people is settled long time before the official declaration of state. Indegeneous people not only served as one of prequisite requirement of human rights implementation. However, based on historical context recognition of indegeneous people has been decreased recently. It is caused by the economic development that sometimes impacted the territorial of indegeneous people itself. Furthermore, the assimilation process of indegeneous people and “new-comer” citizen has limited the space for indegeneous people to conduct their ritual as cultural-religious community. The main puzzle to be elaborated in this research are how UUD 1945 maintain the constitutional protection to indegenous people. Secondly, how the implementation of constitutional protection over indegeneous people in Indonesia. This research suggested constructive advices to overcome the problem. Firstly, emerging recognition and protection over indegeneous people through sincronization of state and local government regulation. Secondly, this research urging the government to sttle a legal platform for conflict resolution among indegeneous people and between indegenous people and government.Keywords: Cultural rights, Constitutional protection, Indegeneous people
THE CRIME OF PORNOGRAPHY ON INTERNET MEDIA
Authors: Subekti Subekti
Published: December 2017

The development of the internet gave birth to new problems. Among them appear more sophisticated crime in the form of "cybercrime". It is characterized by the rapid growth of the porn sites. The crime of pornography is often the case on the internet among other pornographic material, pornographic material have, keep pornographic material, distributing pornographic material, showing pornographic material, pornographic material lend, make yourself as an object porn, prostitution and online advertising pornographic contents. Issues to be studied in this research is how the sanctions against the crime of pornography via the Internet as well as how best to cope with the crime of pornography via the Internet. Sources of law consists of primary legal materials, including regulation, secondary law, namely literature books and journals related to the problems studied. Overall primary legal materials and secondary legal materials will be analyzed using descriptive analysis is an analytical analysis that describes or depicts nature of regulations.The results of this research are positive law in Indonesia is still inadequate or non-compliance related to the development of pornography on the internet, which limits the granting of pornography that is not clear, where the authorities to take specific actions to address the problem of pornography, the penalty is too light, obscurity party deems appropriate to account for crimes categorized as pornography. The efforts have been made but the evils of pornography is still ongoing due to the difference in interest between the interests of Internet entrepreneurs society in general, especially the lives of young people qualified in the present and the future. Keywords: Pornography, sanctions, countermeasures
Pengaruh Model Generative Learning Terhadap Hasil Belajar Ranah Kognitif Siswa Pada Materi Hukum Newton
Authors: Rosdianto Haris
Published: December 2017

Penelitian ini bertujuan untuk mengetahui pengaruh model generative learning terhadap hasil belajar ranah kognitif siswa pada materi Hukum Newton. Jenis penelitian ini adalah penelitian pre eksprimental dengan rancangan One Group Pretest Posttest Design. Populasi penelitian ini adalah seluruh siswa kelas VIII MTs Makarim Al-akhlak Kota Singkawang. Dikarenakan kelas VIII hanya terdiri atas satu kelas, maka teknik sampling yang digunakan adalah sampling jenuh. Instrumen penelitian yang digunakan berupa tes pilihan ganda. Data dianalisis dengan menggunakan uji paired t-test. Dari hasil perhitungan diperoleh nilai –thitung < -ttabel yaitu -18,03 < -2,160, maka H0 ditolak dan Ha diterima pada taraf signifikansi α = 0,05. Sehingga dapat disimpulkan bahwa terdapat pengaruh model generative learning terhadap hasil belajar ranah kognitif siswa pada materi Hukum Newton.
Tingkat Kemandirian Mahasiswa Pendidikan Sains Pada Konsep Diagram Gaya
Authors: Maduretno Tri Wahyuni
Published: December 2017

Tujuan dari penelitian ini adalah untuk mengetahui tingkat kemandirian mahasiswa Pendidikan Sains pada mata kuliah Mekanika dengan konsep Diagram Gaya. Penelitian ini termasuk penelitian kualitatif dengan subjek penelitian mahasiswa Pendidikan Sains semester III Tahun Akademik 2016/2017 secara purposive sampling. Pengumpulan data menggunakan metode tes tertulis untuk mengetahui kemandirian mahasiswa saat mengerjakan konsep diagram gaya dan angket untuk mengetahui tingkat kemadirian mahasiswa serta wawancara untuk menguatkan jawaban yang diproleh dari hasil tes tertulis dan angket.. Hasil penelitian tingkat kemandirian mahasiswa Pendidikan Sains menunjukkan bahwa mahasiswa memiliki rasa percaya diri, inisiatif sendiri dan disiplin atas ketepatan waktu mengerjakan. Akan tetapi,  mahasiswa kurang mampu mengontrol diri dan saling menggantungkan satu sama lain serta kurang memiliki rasa tanggungjawab terhadap penyelasaian tugas karena mereka kurang memiliki keinginan untuk mendapatkan hasil yang memuaskan.
Analisis Sifat Lasing Bahan Optical Amplifier untuk Sistem Komunikasi Optik Menggunakan Aplikasi Berbasis MATLAB
Authors: Susanto Rudi , Hasanah Herliyani
Published: December 2017

Artikel ini berisi tahapan pembuatan aplikasi dengan GUI Matlab yang digunakan untuk menganalis sifat lasing kaca tellurite yang didadah ion erbium dengan teori Judd Ofelt. Tahapan pembuatan aplikasi terdiri dari 1) analisis kebutuhan fungsional, 2) melakukan kajian formulasi model matematis judd ofelt, 3) membuat aplikasi perhitungan parameter judd ofelt dengan Matlab dan 4)  Pengujian. Hasil pengujian menunjukkan rata rata error terbesar adalah 5,79% pada komposisi x=1,0 sedangkan rata rata error terkecil adalah 0,17% dari hasil ini aplikasi yang dibuat dapat digunakan untuk menganalis sifat lasing. Berdasarkan analisis parameter Judd Ofelt memiliki trend Ω2> Ω6> Ω4 yang bersesuaian dengan komposisi  lain yaitu TBZNbEr10, SALSFEr, LBTAFEr, TZN dan PKBAEr. Berdasarkan hal tersebut, kaca memiliki potensi untuk dikembangkan sebagai penguat optik dalam sistem komunikasi optik . 
COMPARATIVE STUDY ON SYNTHESIS OF METAL ORGANIC FRAMEWORK-199 BY MICROWAVE AND SOLVOLTHERMAL PROCESS
Authors: Vinh Thien Tran
Published: December 2017

In the present paper, a comparative study on the synthesis of metal organic framework-199 by microwave and solvolthermal method was demonstrated. The obtained materials were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), nitrogen adsorption/desorption isotherms and thermal gravity (TG). The microwave synthesis of MOF-199 has been compared to its conventional hydrothermal synthesis. It is found that by using microwave synthesis MOF-199 can be obtained in a much shorter synthesis time with improved yield and textural properties. It is supposed that the microwave energy emitted fast and uniformly, creating nuclei through the solution which quickly grew to crystals and both the nucleation and crystallization steps were accelerated. These make the microwave synthesis advantages over solvolthermal synthesis.
Development of Vocal Teaching Materials Based on Keroncong Singing Or- naments to Strengthen Western Vocal Technique
Authors: Latifah Diah , Milyartini Rita
Published: December 2017

ABSTRACTThis study develops teaching materials based on “Luk Keroncong Song Ornaments". The method used was designed based research that was developed from teaching materials which were based on the strength of the theoretical and applicative activities to test the strength of materials. The results of the study revealed that the Luk Keroncong ornaments, when it is used, strengthen the vocal technique used by the respondents. The result of this research revealed that the teaching material employed improve the respondents’ vocal technique. Notable areas of improvement and strengthening of the respondents were observed in their:-breathing management (Appogio), vocal registration, especially when there are changes in the timbre (passaggio), head-voice resonance, flexibility of tone, and stability of tone.Keywords: Instructional material based on luk keroncong ornament, Implementation, Strengthening, Vocal Techniques
Leszek Wisłocki, Jeleniogórska sonata na cztery lata
Authors: Szajda Marek , Wisłocki Leszek
Published: December 2017

Leszek Wisłocki is a famous music theorist and composer. For many years he has been a Professor at the Academy of Music in Wrocław. However, before he started working for the Academy, he spent some time living in Jelenia Góra, where for 4 years he attended the Stefan Żeromski Co-educational Gymnasium and Grammar School. These school years are the subject of Wisłocki’s account.

It is a detailed description of Professor’s pre-war life, as well as his and his family’s war experience, and in particular of his father’s military service. Wisłocki clearly explains the reasons for his family coming to Lower Silesia and settling in Jelenia Góra. Equally clearly Wisłocki recalls his teachers, school friends and important events which influenced the school life as well as the life of the local society, such as existence of the underground independence movement in 1949. He tells anecdotes about excursions to the mountains or his first performances as a musician staged at school. Wisłocki underlines the importance of this first, post-war period – not only for him, but also for his friends who later, having graduated from grammar school, went on to become professors or achieved other socially significant posts.

Finally, Professors pays a lot of attention to returns and school relations – still vivid and close after more than seven decades. Annual school reunions and extensive correspondence exchanged by the ex-pupils serves as a proof that the short period of education, which lasted only 4 years, had a great impact on the life of this generation.
Nieznośny ciężar przekazu czyli o przekładzie źródeł mówionych w badaniach oral history
Authors: Kudela-Świątek Wiktoria
Published: December 2017

This text has come to life from the belief that there is a need of reflection on the issue of translation of oral history accounts as a part of researcher’s technique. In spite of the importance of the quality of narrative sources translations, this subject is often disregarded by researchers dealing with oral history not only in Poland but also abroad. So far only the British oral history researchers have been interested in this subject. Therefore in my own observations I focused on the questions of genre classification of oral history narrations, existence of cultural community between the interviewee and the researcher, including the question of whether the researcher knows the language of the researched group or people, I also considered social and cultural background in translations of biographic narrations. I find these matters crucial for proper understanding and translation of biographic narrations content to the reader’s language.

Issues raised by me are illustrated with examples of translations prepared for my recent research on national and religious repression in memory of the Poles in Kazakhstan. This choice was motivated by the intention to present my methodological remarks on the most challenging translation available. Most of the analyzed narrations were recorded in Russian, Ukrainian, Polish as well as their numerous dialect variations.

Drawing researchers’ attention to language perspective of recorded and analyzed narrations makes one conscious that each time a narration is presented in an academic text, it has already been altered in many ways by the researcher. Therefore I present various methodological proposals, share my observations and indicate that it is necessary to continuously improve one’s research technique when translating and analyzing foreign oral sources.
Historia a psychologia – historia mówiona a psychoanaliza. Zarys problemu i przegląd literatury
Authors: Von Plato Alexander
Published: December 2017

The article is about the relationship between two scientific fields – history and psychology – with a focus on their connections during the last 150 years and about the meaning of subjectivity in history. It addresses possibilities of cooperation, taking as an example the relationship of oral history  and psychoanalysis. The article emphasizes the problems regarding unconscious elements in history as well as the perception and “digestion” of history by the individual and the collective memory.
Pamięci opowiadane
Authors: Kurpiel Anna
Published: December 2017

The following article constitutes just another voice in a discussion on the social and cultural dimensions of remembrance and different relationships between different kinds of remembering and commemorating and biographical narration. On the basis of the subject literature and empirical materials, i.e. accounts of Macedonian refugees and re-emigrants from France who came to Lower Silesia after the Second World War, the author analyzes three levels of memory. They are the following: autobiographical memory seen from the angle of experience and narration, collective memory of a generation together with the concept of collective identity and the policy towards memory revealed mostly in different practices of commemorating.
Oral history we współczesnej Polsce – badania, projekty, stowarzyszenia
Authors: Lewandowska Izabela
Published: December 2017

This text shows changes in the way oral history has been perceived in the last 10 years in Poland, what projects are being conducted at the moment and where research on this subject is going.

Contemporary research in oral history has taken a few directions. First, this method is treated as a source prompted by historians and used in by them in research activity. Second, an interest taken in this method is manifested in methodological and historiographic reflection. The third group is research on archiving audio-visual documents. Another area of interest for oral history is widely understood education and popularization of this method. 

In Poland there are a few serious institutions/centrers that focus their research and work methods on oral form of information, such as Narodowe Archiwum Cyfrowe (National Digital Archive) and Centrum Edukacji Obywatelskiej (Center for Civic Education). Widely available are internet sources such as „Uczyć się z historii” (“To Learn from History”) and „Świadkowie Historii” (“Witnesses to History”), which gather oral evidence from people all over Poland. The article discusses also activities of the KARTA Center from Wrocław, “Brama Grodzka – Teatr NN” (Grodzka Gate – NN Theatre) Center and Studio Historii Mówionej (Oral History Center) from Lublin. The Memory and Future Institute from Wrocław is a thriving institution as well. An analysis has also been made of initiatives taken by circles in Olsztyn, Łódź, and at the Auschwitz-Birke-nau Museum.

In 2009 the first in Poland Oral History Society was founded (Towarzystwo Historii Mówionej). This was possible thanks to institutions that are growing and becoming more and more active, and also because of academics who take interest in this kind of research. Every year the Society organizes nationwide conferences. Also other academic centers and societies organize conferences and meetings devoted to the culture of memory and oral history.
Miejsce rzeczywiste – miejsce wyobrażone: nieistniejąca dzielnica żydowska w Lublinie we wspomnieniach mieszkańców
Authors: Kubiszyn Marta
Published: December 2017

Jews constituted one of the most important ethnic and religious groups in the history of Lublin. Under the Nazi occupation the Lublin Jewish quarter was turned into a ghetto. In March 1942, after the liquidation of the ghetto, the area was knocked down. And so, extermination of Jews was accompanied by destruction of the local architectural structures and urban layout which had been developed over a few centuries.

The article discusses contemporary narratives relating to the no longer existing Jewish quarter. The processes of remembering and forgetting, as well as recurring constructing of this kind of narratives will be analyzed in relation to the oral history interviews taken by the author in the years 1998–2005 as part of the documentary programme “Oral History of Lublin” run by the “Brama Grodzka – Teatr NN” Centre. The analyses are a starting point for searching the answer to questions about historical, social and cultural determinants of creating (reconstructing) the narrative about the Jewish quarter – as a place in a topographical sense and a symbolic space of cultural otherness.
УДОСКОНАЛЕННЯ КРИТЕРІЮ ОЦІНКИ СТАБІЛЬНОСТІ ІСНУВАННЯ ДУГОВОГО РОЗРЯДУ НА ПОСТІЙНОМУ СТРУМІ
Authors: Kovalenko V. L. , Mastenko R. V. , Strelenko N. M. , Zvorykin C. O.
Published: December 2017

Розглядається проблема визначення стабільності горіння дуги при використанні постійного струму. Створено методику для проведення комп’ютерного осцилографування енергетичних параметрів зварювального дугового розряду. Розроблено програмне забезпечення для аналізу отриманих осцилограм. Розроблено критерій визначення стабільності існування зварювального дугового розряду.
ВЛИЯНИЕ ВЕКТОРА СПЛАВЛЕНИЯ ПОРОШКА НА СВОЙСТВА ОБРАЗЦОВ, ИЗГОТОВЛЕННЫХ ПО АДДИТИВНОЙ ТЕХНОЛОГИИ
Authors: Klochikhin V. V. , Rud N. D. , Naumik V. V. , Chigileichik E. V.
Published: December 2017

В данной работе проведены исследования влияния вектора сплавления титанового порошка на свойства образцов, изготовленных по аддитивной технологии ЕВМ (Electron Beam Melting). Показаны преимущества технологии сплавления порошков из титановых сплавов посредством электронного луча в вакууме. Анизотропия прочностных и пластических свойств испытаниями не установлена. Значения ударной вязкости были существенно выше для образцов, сплавленных в на правлении оси Z. По результатам исследований выданы рекомендации по использованию технологии ЕВМ в авиадвигателестроении с оптимизацией выбора вектора сплавления при изготовлении заготовок из титановых сплавов.
PROBLEMATIKA PENGUKURAN PANGSA PASAR
Authors: Dewata Mukti Fajar Nur
Published: December 2017

ABSTRAKPutusan Nomor 09/KPPU-L/2009 menilai telah terdapat bukti yang sah dan meyakinkan bahwa PT CI telah melanggar Undang-Undang Nomor 5 Tahun 1999 tentang Larangan Praktik Monopoli dan Persaingan Usaha Tidak Sehat. Adapun pasal yang dilanggar adalah Pasal 17 ayat (1) yang memuat ketentuan mengenai larangan bagi pelaku usaha untuk melakukan penguasaan pasar, dan Pasal 25 ayat (1) yang memuat ketentuan terkait dengan posisi dominan. Putusan KPPU tersebut kemudian dibatalkan oleh Mahkamah Agung melalui Putusan Nomor 502 K/PDT.SUS/2010 yang menyatakan bahwa PT CI tidak terbukti melanggar pasal-pasal tersebut. Penelitian ini mengkaji mengenai perdebatan penafsiran klausul tentang penguasaan atas produksi dan pemasaran sehingga mengakibatkan monopoli dan persaingan usaha tidak sehat, dan perbedaan pengukuran pangsa pasar yang dijadikan dasar oleh KPPU dan Mahkamah Agung sehingga menghasilkan putusan yang berbeda. Penelitian ini dilakukan secara yuridis normatif yang mengkaji berbagai bahan hukum, serta dianalisis secara deskriptif komparatif. Temuan penelitian ini menunjukkan bahwa ada perbedaan cara penafsiran teks Undang-Undang Anti Monopoli antara KPPU dan Mahkamah Agung. KPPU menggunakan standar pangsa pasar di kota tertentu di mana PT CI membuka usaha, Mahkamah Agung menggunakan standar pangsa pasar dengan wilayah nasional.Kata kunci: persaingan usaha, monopoli, pengukuran pangsa pasar, posisi dominan.ABSTRACTDecision of Commission for the Supervision of Business Competition (KPPU) Number 09/KPPU-L/2009 stated that there were valid and convincing evidences that PT CI has violated Law Number 5 of 1999 regarding Prohibition of Monopolistic Practices and Unfair Business Competition Article 17 paragraph (1) regarding the prohibition for business actors to control the markets, and Article 25 paragraph (1) containing provisions relating to dominant position. The decision was subsequently annulled by the Supreme Court by the Decision Number 502 K/PDT.SUS/2010 stating that PT CI was not proven to have violated those articles. This research examines as follows: first, debate on interpretation of clauses about the control of production and markets resulting in monopoly and unfair business competition, second, differences in measurement of market share applied by the KPPU and the Supreme Court as underpinning two different decisions. This analysis was conducted using the method of normative juridical approach by examining various law materials, and analyzing through descriptive comparative method. The result of this analysis showed that there is a difference in ways of interpreting the text of Anti-monopoly Law between the KPPU and the Supreme Court. The KPPU used market share standards in certain cities where PT CI opened a business while Supreme Court used market share standards in national territory.Keywords: business competition, monopoly, market share measurement, dominant position.
A New Approach of Rough Set Theory for ‎Feature Selection and Bayes Net Classifier ‎Applied on Heart Disease Dataset
Authors: Al-Shamery Eman S. , Al-Obaidi Ali A.Rahoomi
Published: December 2017

In this paper a new approach of rough set features selection has been proposed. Feature selection has been used for several reasons a) decrease time of prediction b) feature possibly is not found c) present of feature case bad prediction. Rough set has been used to select most significant features. The proposed rough set has been applied on heart diseases data sets. The main problem is how to predict patient has heart disease or not depend on given features. The problem is challenge, because it cannot determine decision directly .Rough set has been modified to get attributes for prediction by ignored unnecessary and bad features. Bayes net has been used for classified method. 10-fold cross validation is used for evaluation. The Correct Classified Instances were 82.17, 83.49, and 74.58 when use full, 12, 7 length of attributes respectively. Traditional rough set has been applied, the minimum Correct Classified Instances were 58.41 and 81.51 when use 2 length of attributes respectively
New Encrypted Steganography Approach
Authors: Husain‎ Saba Mohammed
Published: December 2017

The proposed research Provides an approach for hiding an encrypted text in side a digital image. Where the text is encrypted in a complex manner used method of PlayFair to encrypt clear text and to increase security put lettering ciphertext on the geometric shape clockwise and then we write the ciphertext output in the form of lines, taken new ciphertext and converted to Ascii code and then to binary and hidden text in bits least importance in the picture. The results were good by PNSR scale
In vitro the Antiprotozoal Activity of Zingibar ‎officinale Alcohol Extract and Metronidazole in ‎Entamoeba gingivalis which Isolated from ‎Patients with Periodontal Disease
Authors: Hussian Raflaa S.H.
Published: December 2017

Entamoeba gingivalis is parasite found in mouth, causes dental disease. This parasite discovered in dental plaque, the last studies found relation between E. gingivalis and periodontal disease. In present study collected 30 samples collected from patient with age (20-30) years, result show infection with this parasite 46.6%. These samples are cultured in TYSGM-9 media, and then treated with different concentration of alcoholic extract ginger and metronidazole which show inhibited growth of parasite at (25, 50, 75,100 μg/ml. )
A contact model of traveling-wave ultrasonic motors considering preload and load torque effects
Authors: Li Jinbang , Liu Shuo , Qu Jianjun , Cui Yuguo , Liu Yang
Published: December 2017

The preload and load torque are two important operating parameters of traveling wave ultrasonic motors (TWUSMs), which have strong effects on the contact of stator and rotor. First, the effects of preload and load torque on vibrations of stator were investigated in this paper. A laser Doppler vibrometer was used to measure the vibration velocities of stator. According to the results, the vibration velocity curve of free stator is basically sinusoid. As the preload and load torque applied, the fluctuations in the peaks and troughs of the velocity curve are increased, which indicates that the movement trajectory of the particle on stator surface is changed. The stator amplitude is not the only parameter which represents the drive capability of stator. The drive capability of stator is also related to the movement trajectory of the particle on stator surface. Then, the preload coefficient and load torque coefficient were proposed. Using the two coefficients, the effective amplitude could be obtained. Finally, the contact model considering preload and load torque was established. The performances of the motor were analyzed using the proposed contact model and the calculated results shown good agreements to the measured values.
A novel nonlinear modeling for estimate the dynamics of an MR brake
Authors: Hong Hyun-Wook , Lee Jae-Hak , Yun Young-Won , Kim Dong-Hwan , Park Myeong-Kwan
Published: December 2017

This paper presents a mathematical modeling of a magneto-rheological (MR) brake to determine a relationship between input current and output torque for applying a variety of control applications. The proposed model is consisted of two sub-models: a mechanical sub-model, using Bingham plastic model for MR fluid and a magnetic circuit sub-model through a semi-empirical method to estimate the nonlinear hysteresis behavior of MR brake used. The first mechanical sub-model using Bingham plastic model describes the magnetic filed dependent fluid characteristics and the relationship between the torque and the dynamic yield stress caused by the applied field. The magnetic circuit makes up the second sub-model with the relationship between the dynamic yield stress and the magnetic induction of MR fluid. Due to the ferromagnetic property of the material used to form the flux path, MR brake experienced hysteresis effects and thus its hysteresis behavior is approximated through a semi-empirical method. The final model of MR brake links both sub-models together by the torque. An experimental setup is manufactured to evaluate the proposed model with a commercial MR brake used. The experimental result is compared with these predicted from the proposed nonlinear model in order to validate the model accuracy. The result shows that proposed model is reasonably predicted the hysteresis behaviors of MR brake. Moreover, the frequency response test of MR brake is carried out to evaluate the feasibility for a torque estimator in control use, and shows that the predicted frequency response matches up to the experimental characteristics and MR brake used has a bandwidth of nearly 35 Hz enough high to control.
Design of equivalent coils for anti- interference testing of heavy current transformers
Authors: Gao Yucheng , Zhao Wei , Qu Kaifeng , Li He , Shao Haiming , Wang Qing , Huang Songling
Published: December 2017

Heavy current transformers (HCTs) for large generators are intensively interfered by the stray magnetic field produced by heavy adjacent currents, and therefore, anti-interference testing is a crucial process to assure the robustness of HCT products. However, the generation of the interference involves multiphase heavy currents, which are difficult to produce in testing environments, and equivalent testing coils have become an emerging solution to the testing. In this paper, an improved parameter determination algorithm is proposed for the traditional two-segment testing coil configuration, and furthermore, a novel multi-segment testing coil configuration is proposed for better equivalence of the multiphase interference. The effectiveness of the two configurations are thoroughly analyzed by FEM-based simulations as well as physical experiments.
A new paralleling-in-order based unconditionally stable FDTD method using Legendre polynomials
Authors: He Wei , Huang Zheng-Yu , Li Yue-Bo , Sun Zheng , Zhou Ying-Hui
Published: December 2017

The orthogonal expansion based unconditionally stable FDTD method has been developed and attracted much attention recently. It can be implemented by two schemes: marching-on-in-order and paralleling-in-order solution, which respectively use weighted Laguerre polynomials (WLP) and associated Hermite (AH) functions as temporal expansions and testing functions. This paper proposed to use Legendre polynomials as another kind of orthogonal basis to make a new paralleling-in-order based unconditionally stable FDTD method. Numerical result shows it has much better performance in long time simulation case when compared with AH FDTD method.
Transmission impedance extraction method applied in magneto-rheological damper
Authors: Chen Yushou , Zhou Mengxia , Geng Lu , Yan Wei , Zhao Yang , Wang Enrong
Published: December 2017

The magneto-rheological damper (MRD) has been widely used to suppress shock and vibration, which has strong nonlinearities and electromagnetic interference (EMI) due to the displacement vibration, semi-active control strategy, excitation current and excitation coil. The transmission impedance of excitation coil should be determined and measured to calculate excitation current and design EMI filter, which can improve the MRD control effectiveness and mitigate EMI noises. However, the transmission impedance of excitation coil is active complex impedance, which can’t be determined by traditional passive impedance extraction method. To solve the problem, the transmission impedance model and equivalent circuit of MRD is proposed and analyzed. Moreover, a novel transmission impedance extraction method is designed to obtain the transmission impedance of excitation coil online. The theoretical and experiment results show that the transmission impedance of three ferrite core with different turns can be determined. The transmission impedance of Lord MRD RD-8040-1 can be obtained by employing the present method, which comply with theoretical results well. The transmission impedance of MRD at characteristic frequency is growing with excitation current increasing, which verify the MRD transmission impedance model and extraction method efficient and effective.
Effect of variety and planting density on weed dynamics and yield performance of transplant Aman rice
Authors: Salma MU , Salam MA , Hossen K , Mou MRJ
Published: December 2017

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during Aman season from June to November 2016 to find out the effect of variety and planting density on weed dynamics and yield performance of transplant Aman rice. The experiment consisted of four varieties viz. Binadhan-7, BR25, BRRI dhan56 and BRRI dhan62 and four planting density viz. 25 cm × 15 cm, 25 cm × 10 cm, 20 cm × 15 cm and 20 cm × 10 cm. The experiment was laid out in a randomized complete block design with three replications. Variety exerted significant effect on weed density and dry weight at different days after transplanting (DAT). The lowest weed density and dry weight were observed in BR25 and the highest ones were observed in Binadhan-7. Weed population was not significantly affected by planting density while weed dry weight was significantly affected and closer spacing produce the lowest weed dry weight. Yield and yield contributing characters of transplant Aman rice were significantly influenced by variety and planting density. BR25 showed produce the highest plant height (157.9 cm), panicle length (24.94 cm), grains panicle(103.10), sterile spikelets panicle−1 (29.36), grain yield (4.30 t ha−1) and straw yield (8.99 t ha−1) while BRRI dhan62 the highest number of total tillers hill−1 (14.75), effective tillers hill−1 (11.62), and non-effective tillers hill−1 (3.10). The highest 1000-grain weight (25.21g) was found in the variety Binadhan-7and the highest harvest index (53.50%) was obtained from BRRI dhan56. In case of planting density, the highest value of plant height (124.27 cm), total tillers hill−1 (13.53), effective tillers hill−1 (11.20), non-effective tillers hill−1 (2.32), panicle length (22.59 cm), grain yield (4.17 t ha−1) and straw yield (5.75 t ha−1) were obtained from 25 cm × 15 cm spacing. On the other hand, the highest number of grains panicle−1 (84.23) and harvest index (45.18 %) were obtained from 25 cm × 10 cm spacing, heaviest 1000-grain weight (23.83 g) from 20 cm × 15 cm spacing. Experimental results indicated that BR25 grown under 25 cm × 15 cm planting density appeared to be the best in order to get maximum grain yield as well as reducing weed infestation.J. Bangladesh Agril. Univ. 15(2): 167-173, December 2017
Germination and seedling growth of indigenous aman rice under salt stress
Authors: Das D , Ali MA , Sarkar TA , Ali MY
Published: December 2017

The experiment was conducted at the Agronomy Laboratory of Agrotechnology Discipline, KhulnaUniversity, Khulnato determine the effect of salt stress on germination and seedling growth of indigenous Aman rice varieties during June, 2015 to December, 2015.  The salt tolerant landraces will be used as genetic resource for variety development program in future. The factorial experiment consists of two factors such as ten indigenous Aman rice varieties and four levels of salt solutions viz EC (dS m−1) of 5, 10 and 15 with control (distilled water). The experiment was laid out in Completely Randomized Design (CRD) with three replications. The interaction effects between variety and salinity on germination and seedling growth parameters of indigenous Aman rice varieties were varied significantly. It was found that germination capacity, energy, speed, seedling vigor index, root length and shoot length of rice were decreased gradually with increasing salinity. The germination energy and germination speed of most varieties were drastically reduced at 10 dS m−1 or higher salinity levels. The germination capacity of Hatibazor, Boushohagi, Shadagotal and Moinamoti were recorded 97.66 %, 99.33%, 98.0 % and 97.33%, respectively at 15 dS m−1 water salinity in laboratory condition. The results revealed that the indigenous Aman rice varieties named Boushohagi, Shadagotal, Hatibazor, Moinamoti, Motha were performed better over other varieties considering of germination and seedling growth parameters.J. Bangladesh Agril. Univ. 15(2): 182-187, December 2017
Growth, leaf biomass yield of stevia and post-harvest soil fertility as influenced by different levels of poultry manure
Authors: Zaman MM , Nahar K , Chowdhury T , Chowdhury MAH
Published: December 2017

Stevia represents an interesting species for the development of new ingredients characterized by a low caloric contribution having high antioxidant and phytochemical properties. As a valuable organic fertilizer, poultry manure (PM) serves as a suitable alternate to chemical fertilizer due to having higher total solid content than most other manures. The present study was conducted in the net house of the Department of Agricultural Chemistry, BangladeshAgriculturalUniversity, Mymensingh to evaluate the effects of poultry manure on growth and leaf yield of stevia and post-harvest soil fertility. The experiment was laid out in a Complete Randomized Design (CRD) with three replications. PM was applied at rates of 0, 5, 7.5 and 10 t ha−1. Data of the plant height, number of branches and number of leaves per plant were collected at 0, 15, 30, 45 and 60 days after planting (DAP). At harvest, leaf area, fresh weight, dry weight of leaves of stevia  and post-harvest soil were evaluated. Plant that received 5 t ha−1 of PM was the best with respect to all the parameters assessed except post-harvest soil fertility. The contents of total N, available P, exchangeable K, Ca, Mg, available S, Zn and B were significantly increased with the increased levels of PM up to 10 t ha−1 in both soils. pH and soil organic matter content were also increased several folds and favored higher growth and yield of stevia. It can be recommended from the findings of the study that farmers should apply PM @ 5 t ha−1 to obtain maximum growth and leaf yield of stevia where as PM @ 10 t ha−1  can be applied for maintaining soil fertility in the agro-climatic condition of Bangladesh.J. Bangladesh Agril. Univ. 15(2): 212-218, December 2017
Varietal preference of okra jassid, Amrasca devastans (Dist.) under field condition of Bangladesh
Authors: Sultana MN , Uddin MM , Ahmad M , Adnan SM
Published: December 2017

An experiment was conducted in the Field Laboratory, Department of Entomology, (BAU), Mymensingh on the varietal preference of okra jassid, Amrasca devastans (Dist.) using 14 okra varieties viz. F1 Tamanna, Hybrid Okra Gunyon, Okra F1 Green Soft, OK 285, Okra F1 Green Star 33, F1 Hybrid Fresh Power, F1 Hybrid Sarosh 3, Hybrid Okra (MDR), Okra Nabil, BARI-1 (Samrat), Hybrid Chamak and Local variety during March to June 2014. The results indicated that host preference of jassid differed significantly among the 14 varieties tested. Three varieties viz. Hybrid Chamak, Arka Anamika and Kolatia were the least preferred by jassid. Five varieties viz. Okra Nabil, Hybrid Okra (MDR), F1 Hybrid Fresh Power, Local variety, and OK 285 were comparatively highly preferred and rest of the six varieties viz. Okra F1 Green Star 33, BARI-1 (Samrat), F1 Tamanna, F1 Hybrid Sarosh 3, Hybrid Okra Gunyon, and Okra F1 Green Soft were moderately preferred by jassid. This variation of preference of okra jassid might be due to different morphological and physiological characters of selected varieties. It could be concluded that comparatively resistant varieties selected from the present study might be incorporated to develop of IPM package for jassid.J. Bangladesh Agril. Univ. 15(2): 227-233, December 2017
Reuse of spent mushroom substrate as casing material for the production of milky white mushroom
Authors: Ashrafi R , Mian MH , Rahman MM , Jahiruddin M
Published: December 2017

An experiment was conducted to reuse waste generated from mushroom farm called composted spent mushroom substrate (SMS) as casing material for the production of milky white mushroom. The production trial of milky white mushroom was conducted with five casing mixture viz. Loam soil + Sand (3:1) (farmer’s practice), SMS compost + Sand (3:1), Loam soil + SMS compost + Sand (2:1:1), Loam soil + SMS compost + FYM (1:1:1) and SMS compost + FYM (1:1). Results revealed the suitability of SMS to reuse as casing materials through composting. Casing treatments containing SMC alone or combination with sand (3:1) and soil + FYM (1:1:1) produced statistically similar yield which were statistically higher than farmer’s practice. Among these three treatments, pH, EC, particle density and organic carbon ranged between 7.16-7.82, 1.69-1.84 mmhos cm−1, 1.52-1.90 g cc−1 and 11.3%-15.8%, respectively. Below or above this range reduced the yield of milky white mushroom. SMC, SMC + Sand (3:1) and Soil + SMC + FYM (1:1:1) produced statistically similar yield but SMC and SMC + Sand (3:1) took shorter time to harvest than Soil + SMC + FYM (1:1:1). So, SMC or SMC + Sand (3:1) can be recommended to use as casing material.J. Bangladesh Agril. Univ. 15(2): 239-247, December 2017
An economic analysis of Jara and Colombo lemon production in Bangladesh
Authors: Kaysar MI , Hoq MS , Mia MS , Islam MS , Islam MM
Published: December 2017

The study was conducted in two districts namely Sylhet and Narsingdi to investigate the production technology of Jara and Colombolemon growers, estimate profitability and identify the constraints of Jara and Colombolemon. A total sample of 120 farmers taking 60 for Jara lemon from Sylhet and 60 for Colombolemon from Narsingdi was selected randomly for the study. Data were collected through face to face interview method by using structured questionnaire during April–May, 2016. Cost return analysis revealed that Jara and Colombolemon cultivation were profitable in the study areas. Jara lemon cultivation highest cost was estimated Tk. 413575/ha in (11–15)th year garden and lowest cost was Tk. 365777/ha in 2nd year garden. Gross return was highest in 5th year garden (Tk.1995750/ha) and lowest Tk. 975600/ha in (11–15)th year garden. The benefit cost ratio at 6.5% rate of interest was 2.85and IRR 78%. Colombo lemon cultivation highest cost was estimated Tk. 316505/ha in 4th year garden and lowest cost was Tk. 257543/ha in (11–15)th year garden. Gross return was highest Tk. 841522 in 5th year garden and lowest Tk. 413616/ha in (11–15)th year garden. The benefit cost ratio at 6.5% rate of interest was 1.81 and IRR 65%. Lack of improved production technology, poor quality saplings, insect/pest infestation, adulteration of fertilizer and insecticides and less number of export buyers were found major constraints both Jara andColombo lemon production.J. Bangladesh Agril. Univ. 15(2): 289-296, December 2017
A study to assess the socio-economic status of tea workers in selected tea estates of Sylhet district
Authors: Saha JK , Acharjee DC , Rahman MM
Published: December 2017

The study was carried out to examine the socio-economic characteristics of tea plantation workers. A total of 50 farmers from Sylhet district were selected randomly for data collection. The study showed that on an average the size of family of the tea workers was 4.69 which is lower than agricultural labourer inBangladesh. The dependency ratio was found to be 1.80.The literacy of the teaworkers was 56 percent out of which 43 percent were primary level and 13 percent were secondary level. The average annual income per surveyed household was Tk. 75,615 out of which 83% of the total income came from service as a tea labourer while rest 17% derived from agriculture and non-agricultural sources. On an average, the annual expenditure per family was Tk 64,053.The study observed that 88 % percent of the surveyed family received loan from different NGO,s and while only 12 percent obtained from the bank. The analysis credit utilization showed that 41% of the total loan was utilized in meeting repairing houses followed by purchasing of cows (25%) and business (13%) respectively. The study showed that hundred percent roofs of tea workers houses were made of tin. But 58% of the wall was made of brick while 42% was made of mud. On an average 47% of the families reared poultry while 63 percent had livestock. Fifty four percent of households grew vegetables in the study area. The major types of vegetables cultivate by tea workers in the study area were bean, lalsak, chalkumra, gourd etc. Majority household had fruit trees in their homestead. The study showed that most of the household consumed their home products. But only twenty one percent of the households sold their fruits in the local market for cash flow.
Managing sustainable Boro rice production through bio-slurry practice in Mymensingh district of Bangladesh
Authors: Kabir H , Isjam MA , Khan M , Rahman R
Published: December 2017

This study aimed to explore sustainable agricultural land management for Boro rice production through bio-slurry practice inBangladesh. Face to face interviews were used on bio-slurry user and non-user farmers in the selected areas of Mymensingh district. The nutritional values (Nitrogen (N), Phosphorus (P), and Potassium (K) of the slurry and non-slurry based soil were analyzed in the Department of Soil Science laboratory, BAU. Descriptive statistics were used to estimate the benefit and cost of boro rice production based on slurry and non-slurry practice. Likert Score scaling and Fishbein model were used to evaluate social acceptability and perception of slurry practices. Two-t sample test also applied for significance the difference of N,P, K on slurry based and non-slurry based soil.. Sixty households were purposively selected and the data were covered on socioeconomic characteristics, consumer attitude, income, cost, returns of bio-slurry and non-slurry based crop. The cost of N, P, K was reduced due to slurry practices instead of chemical fertilizer practices. The total production cost of boro rice per acre for slurry and non-slurry practices were BDT 31,064 and BDT 34,877 respectively, The per acre net return of bio-slurry and non-slurry based rice production were BDT 6056 and BDT 425 respectively and BCR were 1.19 and 1.01, respectively. The bio-slurry practice is much convenient for sustainable land management because it is economic viable, socially accepted and finally, slurry based soil contains significantly better Phosphorus and Potassium compared to non-slurry based soil.
Drying kinetics and determination of water sorption isotherms of corn
Authors: Roy J , Alim MA , Islam MN
Published: December 2017

The study was carried out for the purpose of determining the drying kinetics as well as moisture sorption isotherm of hybrid-81 corn. Corn at about 31% moisture content (wb) was dried in a forced convective hot air cabinet dryer at different drying conditions, such as variable air dry bulb temperature (40°C, 50°C and 60°C) and loading density (3.56 kg/m2, 7.12 kg/m2, and 10.68 kg/m2) as well as in shining sun at different layers (3.56 kg/m2, 7.12 kg/m2, and 10.68 kg/m2). The water sorption isotherm of the dried corn was developed using vacuum desiccators, which contained saturated salt solutions in the range of 11-93% RHs. The mono-layer moisture content calculated by the Brunauer–Emmett–Teller (BET) model (6.76 g/100 g solid) was lesser than that calculated by the Guggenheim–Anderson–De Boer (GAB) model (10.53 g/100 g solid). The energy constants were 10.45 and 4.64 as per BET and GAB equation, respectively. Both models gave suitable fits for corn. The activation energy (Ea) for diffusion of water was found to be 11.09 kcal/gm-mole for corn. Furthermore, it was noticed that, with the increase of corn layer, the drying rate decreased in case of both sun and mechanical drying. However, higher loading density resulted in efficient drying, at least up to 10.7 kg/m2. It was shown that the drying time to obtain stability was the lowest for moisture content (12.08 %) corresponding to aw of 0.65 in case of BET or GAB monolayer moisture content. This finding could be helpful in predicting the storage life of corn.J. Bangladesh Agril. Univ. 15(2): 309-317, December 2017