162 research outputs found
Cooperative dancing with an industrial manipulator: Computational cybernetics complexities
No full textTural, Kübra (Dogus Author) -- Tükel, Dilek Bilgin (Dogus Author) -- Conference full title: 2016 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2016; Budapest; Hungary; 9 October 2016 through 12 October 2016.Synchronization of music and dance of industrial manipulators is studied, simulated and realized. The results are shown in this paper. To formulate the dance, a modified Labanotation software has been developed, and a user-friendly human-machine interface is designed to enable the user to program the robot easily. The system is incorporated with a music analyzer, employing Fast Fourier Transform, to track the beats. The robot dances in synchrony with the input from the music analyzer. Experiments are done on a six degree-of-freedom industrial robot
Two-way coupled aerodynamics and vehicle dynamics simulations of a heavy ground vehicle subjected to crosswind of various frequencies
No full textThe present study investigates the dynamic characteristics of a heavy ground vehicle subjected to crosswind with various frequencies using two-way coupled simulations between aerodynamics and vehicle dynamics, including the driver's steering inputs. Four different reduced frequencies of crosswind, which are equal to 4.2, 2.1, 1.3 and 0.9, are used. The results show that the absolute maximum magnitudes of the vehicle's lateral dynamic and aerodynamic characteristics increase inversely proportional with the reduced frequencies of crosswinds without the driver's steering input. However, when the driver's steering input is included in the vehicle's response to the crosswind disturbances, the vehicle's lateral dynamic characteristics increase by the largest amount for reduced frequencies of 1.3 and 2.1. Furthermore, for a reduced frequency of 0.9, the driver's steering inputs attenuate the unfavourable amplifications in the vehicle's lateral dynamic characteristics. In the present study, the reasons for the increase in the vehicle's lateral dynamic characteristics in the cases of reduced frequencies equal or greater than 1.3 with the driver's steering input are explained. Additionally, the results show that the vehicle is not controlled within the 0.5 m lateral margins of the road when the steering starts with a time delay of 1.0 s for reduced frequencies equal to or lower than 2.1.Swedish Innovation Agency Vinnova [2017-03391]; Centre for ECO2 Vehicle Design at KTH (Vinnova) [2016-05195]; Vinnova [2017-03391] Funding Source: Vinnova; Swedish Research Council [2016-05195] Funding Source: Swedish Research CouncilThe author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The author would like to gratefully acknowledge the co-funding he has received for this work from the Swedish Innovation Agency Vinnova (grant number 2017-03391) and the Centre for ECO2 Vehicle Design at KTH (itself funded by Vinnova grant number 2016-05195)
Множественная роль инфраструктуры железнодорожных станции – просмотр на трех концепциях (Multiple role of railway stations infrastructure - view on three concepts)
No full textDue to the growth of the urban population in the world, the fact of densification in cities has increased. As a result of this reality, the issue of lack of physical space in cities emerges. In this sense, the author highlight the importance of sustainable and multifunctional use of the city infrastructure, especially of the railway stations. The author mentioned three practical examples in different French cities: The Saint-Lazare railway station in Paris as an example of “Shopping centre and Railway station” concept, the Strasbourg's Railway station “Environment and Railway station”, Lyon's railway station Part Dieu and Geneva's Railway station “Cornavin” as an example of the concept “Intermodal Hub and Railway station”
Agricultural technology adoption by rural farmers in Malawi: A case study of a Small Enterprise in Malawi
No full textThe implementation of new agricultural technologies is considered a key component of Malawi’s agricul- tural development strategy. However, successful technology adoption has proven to be difficult, affecting both farmers and small businesses introducing the technology. With a primary focus on farmers interested in adopting the technology, common factors influencing farmers’ adoption habits are determined by con- ducting interviews and observations. Survey results indicate that from a farmers perspective; market ac- cess, information access, education, and affordability are key factors helping facilitate adoption, while lack of these factors hinder adoption. Insight into these factors could provide business knowledge on how to better facilitate technology adoption. For this purpose, literature factors affecting a SME’s success are compared with an active agricultural technology company. These factors include experience, communication, man- agement and technology performance. Using both farmers needs and business developmental factors, this study hopes to provide insights for new companies starting a business in a developing country.Multidiciplinairy projec
Trakya bölgesinde ayçiçeğinin mekanizasyonu ile bitkinin mekanizasyonuna yönelik özelliklerinin saptanması üzerine bir araştırma
No full textDoktoraII ÖZET Doktora Tezi Trakya Bölgesinde Ayç içeninin Mekanı zasyonu ile Bitkinin Mekani zasyona Yönelik özelliklerinin Saptanması üzerine Bir Araştırma B i r o 1 K A Y î SOgLt*^- Trakya üniversitesi Tekirdağ Ziraat Fakültesi Tarımsal Mekanizasyon Bölümü Araştırma Görevlisi Trakya üniversitesi Fen Bilimleri Enstitüsü Tarımsal Mekanizasyon Anabil im Dalı Danışman*. Prof.Dr.Poyraz ÜLGER 1990, Sayfa s 169 Juris Prof.Dr.Poyraz ÜLGER Juris Prof.Dr. Yusuf ZEREN Juris Doç. Dr.Selçuk ARIN Bu araştırma 1988-1990 yılları arasında Tekirdağ İline bağlı Kayı Köyü ile T.ü. Tekirdağ Ziraat Fakültesinde tarla ve laboratuvar denemeleri şeklinde yürütülmüştür. Araştırmanın amacı ayçiçeği bitkisinin mekanizasyona yönelik fizik sel ve fiziko-mekaniksel özelliklerini saptamak ve bitki için en uygun mekanizasyon zincirinin oluşturulmasına katkıda bulunmaktır. Araştırma daha çok bölgede ayçiçeği üretiminde en önemli mekanizasyon sorunlarını kapsamaktadır.Ill Yapılan çalışmaları altı ana başlık altında toplanır. Bunlar; 1-Bitkinin mekanizasyona yönelik özelliklerinin saptanması, 2-Ayçiçeği bitkisinde toprak işlemenin bitki ve toprak özellikleri üzerindeki etkisinin saptanması, 3-Toprak işlemenin ekim düzgünlüğüne etkisinin saptanması» 4- Ayçiçeği bitkisinin tohum yatağı hazırlama ve çapalama yöntemlerinin ekimden sonraki otlanma ve verim üzerindeki etkisinin saptarması 5-Uygulanan mekanizasyon sistemlerinin enerji gereksi nimlerinin saptanması ve 6-Ayçiçeği bitkisinin biçerdöver ile hasadına ilişkin verilerin saptanmasıdır. Araştırmada altı farklı toprak işleme yöntemi ile iki farklı tohum yatağı ve çapalama yöntemi uygulanmıştır. Ayçiçeği bitkisinin ekiminde yörede en fazla kullanılan Hava Emişli Hassas Ekim Makinası kullanılmıştır. Hasat işleminde ayçiçeği için özel tabla takılmış biçerdöver kullanılmıştır. Araştırmada aşağıdaki sonuçlar elde edilmiştir» 1. Denemeye alınan ayçiçeği tohumluğunun ortalama genişliği 7.19 mm uzunluğu 12.29 mm basıklığı 0.38 mm, küresellik katsayısı %60, kabuk kalınlığı 0.38 mm; hacım ağırlığı 0,45 Kg/dmJı yığılma açısı 32°, bin dane ağırlığı 67.3 g bulunmuştur. Ayrıca» ay çiçeği tohumunun sürtünme katsayısı, Paslı sac yüzeyde 0.75, boyalı sac yüzeyde 0.75, galvaniz sac yüzeyde 0.58, cam yüzeyde 0.69 ve karton yüzeydeIV 0.61 olarak bulunmuştur. 2. Toprak işleme aletlerinin genel iş başarıları ve işleme derinlikleri sırasıyla ortalama, tekli Pullukta 2.78 da/h ve 500 mm, ikili pullukta 3.89 da/ h ve 293 mm5 dipkazanda 3.35 da/h ve 540 mm? çizel pullukta 7.30 da/h ve 110 mm olarak bulunmuştur. 3. Uygulanan toprak işleme yöntemleri toprak sıcaklığı toprak hacım ağırlığı ve toprak nemi üzerinde önemli ölçüde etkili olmuşlardır. Ayrıca? bu yöntemler bitkinin verimini de önemli ölçüde etkilemişlerdir. Pulluk kullanılan yöntemlerde ve anız- sız Parsellerde verim daha yüksek olmuştur. 4. Toprak işleme yöntemleri ekim düzgünlüğünü de etkilemişlerdir, özellikle anızlı parsellerde sıra üzeri saPma yüzdeleri daha fazla olmuştur. Ayrıca, ekim derinliği toprak işleme ile orantılı olarak artmıştır. Tarla filiz çıkışı ile bitkinin verimi arasında da önemli bir ilişki olduğu saptanmıştır. 5. Uygulanan tohum yatağı hazırlama ve çaPalama yöntemleri ayçiçeği bitkisinin verimi üzerinde önemli bir etki göstermemişlerdir. 6. Toprak işlemede tekli Pulluk» tohum yatağı hazırlamada Kültivatör+kırlangıç kuyruğu+tırmık ve ça-V palamada kırlangıç kuyruğunun kullanıldığı mekanizasyon zinciri 710. HS MJ/da enerji girdisi ve E. 95 MJ/kg ürün enerji maliyeti ile en başarılı kombinasyon olmuştur. En fazla enerji tüketimi dipkazan ile yapılan birincil toprak işlemede ortalama 106 MJ/da olarak tespit edildi. 7. Ayçiçeği bitkisinin biçerdöverle hasadında iş başarısı 19.33 da/h olarak ölçülmüştür. Gerçek iş genişliğinden kayıp %3.7 olmuştur, iki ayrı batör devrinde yapılan kayıp ölçümlerinde 530 d/d'de ki toPlam kaViP %E.8, 710 d/d'de ki toplam kayıp 2.7 olmuştur. Devir sayısı arttıkça hasat edilen ürün deki dolu dane oranı azalmıştır.VI SUMMARY A Research on Mechanization of Sunflower with Determination of Plant Properties for Mechanization in Thrace Region Birol KAY î SOSLU Thrace University '' Tekirdağ Agricultural Faculty Department of Agricultural Mechanization Research Assistant Thrace University Technical Science Institute Department of Agricultural Mechanization Supervisor: Prof. Dr.Poyraz ÜLGER 1990, Page: 169 Jury: Prof.Dr.Poyraz ÜLGER Jury: Prof.Dr.Yusuf ZEREN Jury: Assoc. Prof. Dr. Selçuk ARIN Th-.s Research was made during 19B9-1990 in the Prac tical and research field of Kay ı Village in Tekirdağ Province and Tekirdağ Agricultural Faculty. The aim of this research was the determination of sunflower properties for mechanization and to find the best mechanization system for plant growing. The research was emp hasized on the biggest problem for sunflower mechanization in the region. The research had six sections. First section: inclu ded some physical and Physicomechanical Properties of sunflo-VII wer for mechanization, second sections the determination of tillage effects on plant and soil properties5 third section: the determination of tillage effects on planting performance» fourth sections the determination of preparation of seed bed and hoeing methods effects on weeds after planting and yield of sunflowers fifth section! the determination of energy re- Quiretment of different mechanization systems on sunflower qrowinq and the last sections the determination of datas for harvest ı nQ with sunflower combine harvester. Six different tillage methods were used in this research. In addition, two different preperation of seed beds and hoeing methods were used. Planting were made with Pneumatic Planter. Harvesting was made combine harvester with special attachment. Tha results of this experiment are the following? 1. The mean sets width 7.19 mm5 length 1E.E9 mm, ob lateness ^.74 mm* coefficient of spherical 607.s shell width 0.38 mm* volum weight 0.45 kg/dm3? na tural heaped angle 32% thousand grain weight 67.3 g were determined for sunflower seed. In addition the coefficient of friction, was 0.75 on rusty iron steel surfacei 0.75 on Painted iron steel surface» 0.58 on galvanized iron steel surfaces 0.69 on the glass surface and 0.61 cardboard surface.u VIII 2. The effective work effiency and tilling depth of tillage implements were E.78 da/h and 500 mm for single molhoard Plows 3.88 da/h and S93 mm for two molboard plows 3.35 da/h and 5^0 mm for subsoiler, 7.30 da/h and 110 mm for chisel Plow. 3. The tillage methods affected significantly the i temperature» volum weight and moisture of soil., In addition» these methods affected the yield of sunflower. The yield was higher by using Plow and in Plots without straw than the other methods. ^. The tillage methods affected regularity of Plant ing. Particulary» Daviation in the row in plots with straw were higher and found significant. In addition» planting depth increased with tillage degree. The relation beetwen the percentage of emergence and the yield were found significant. 5. The Preparation of seed bed and hoeing methods did not affect the yield of sunflower. 6. The best mechanization system was single plow for tillage» cul tlvator+graham Plow+harrow for Prepa ration of seed bed» Pnoumatic planter on planting» graham Plow on hoeing as erwrgy consumption. This system required 710. SS MJ/da energy and cost ofo IX energy for product was 2.95 MJ/kg. Subsoiler sPen- ded more energy (106 MJ/da) than the other tillage implements. 7. The effective work efficiency was 19.33 da/h on harvesting with combine harvester. The loss of re al working width was 3.7%. The total loss for dif- i i ferent thresher revulation were 2.75% in 530 rPm and 2.65% in 710 rPm. While the revolution incre ased, the full seed ratio in thrased crops decre ased
Coherence lifetimes of excitations in an atomic condensate due to the thin spectrum
No full textWe study the quantum coherence properties of a finite sized atomic condensate using a toy model and the thin spectrum model formalism. The decoherence time for a condensate in the ground state, nominally taken as a variational symmetry breaking state, is investigated for both zero and finite temperatures. We also consider the lifetimes for Bogoliubov quasiparticle excitations, and contrast them to the observable window determined by the ground-state coherence time. The lifetimes are shown to exhibit a general characteristic dependence on the temperature, determined by the thin spectrum accompanying the spontaneous symmetry breaking ground state
Separation and preconcentration of boron with a glucamine modified novel magnetic sorbent
No full textA novel, simple method based on magnetic separation was developed for analytical purposes. In this method, N-methyl-D-glucamine (NMDG) modified magnetic micro-particles that were synthesized by using the sol-gel method were used for the selective extraction and preconcentration of boron from aqueous solutions. This method combines the simplicity and selectivity of solvent extraction with the easy separation of magnetic microparticles from a solution with a magnet without any preliminary filtration step. The structure of the prepared gamma-Fe2O3-SiO2-NMDG (magnetic sorbent) composites were characterized by using X-ray diffraction (XRD), Transmission Electron Microscopy (TEM), and Fourier Transform Infrared Spectroscopy (FTIR). The influence of different parameters on the sorbent capacity, such as the sorption/desorption of boron, magnetic sorbent dosage, pH, equilibrium time, type, and amount of stripping solution, were evaluated by using the magnetic sorbent. Any equilibrium pH greater than 6 can be used for sorption. Desorption from the sorbent was carried out by using 1.0 M HCl. The sorption and desorption efficiency of the gamma-Fe2O3-SiO2-NMDG was found as 92.5 +/- 0.5% and 99.8 +/- 6%, respectively.Dicle University Research Fund [08-EF-55]The author is grateful to Prof. Dr. Murvet Volkan, for her support in preparing the gamma-Fe2O3-silica particles, during postdoctoral studies in her laboratory at the Middle East Tecnical University, Ankara. This work was also partially supported by the Dicle University Research Fund (Project No. 08-EF-55)
Empirical Modelling of Inter-organizational Knowledge Collaboration
No full textOpen innovation, knowledge co-creation, and research joint ven-tures, unified under the term 'inter-organizational knowledge collaboration', are discussed in various fields of innovation man-agement to ultimately shape inno-vation strategy of the organiza-tions and the innovation policy. Several ongoing debates are crucial in the allocation of resources and division of labor with regards to the innovation system: industries vs. universities, who are the salient actors of the innovation system? Death of distance vs. geographical boundedness, does distance mat-ter? Network cohesion vs. struc-tural holes, where in the network is more fertile for innovation? This book, discussing these de-bates, intends to direct the innovation strategy and policy.<br/
Bigamy in the Polish Criminal Law
No full textBigamy is a crime threatening the regularity of family functioning, whose basis, due to the cul-tural tradition and Polish law, makes monogamy marriage. In his article the author presents the origin of the bigamy crime and its statutory hallmarks. It is shown who, in what circumstances, and with fulfilling which conditions, can commit bigamy crime, as well as the statistic depiction of the crime has been presented
Stereotype und Vorurteile im Fremdsprachenunterricht - sollte man sie bekämpfen, akzeptieren oder relativieren?
Get PDFThe author of the article touches upon an extremely important concept of national tereotype. The import of the issue incrosses when it comes to countries with tragic past, like Germany and Poland. The presentation includes features of stereotype as opposed to Fremdbild, as well as the concept of prejudice. The conclusion introduces a suggestion to contuct intercul-tural trainig together with the popularisation of issues related to stereotype, and challenging the stereotype through everyday contacts with other ethnic groups
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