Container-Based Virtualization for Bluetooth Low Energy Sensor Devices in Internet of Things Applications

Internet of Things (IoT) has become a continuously growing concept with the developments of ubiquitous computing, wireless sensor networks (WSN). With the industry 4.0 revolution, all production activities such as logistics, finance, agriculture, energy and almost all the service and infrastructure applications used by people in the cities we live in will undergo a major change within the IoT paradigm. In this study, a prototype model has been developed and its performance is investigated. Our prototype model can reach the advertisement data of Bluetooth Low Energy sensor devices by using container-based virtualization technology and directly working at layer 2 (L2) of Transmission Control Protocol/Internet Protocol (TCP/IP). Virtualization mechanism for the sensor devices could help to exchange context-aware information with Internet Protocol Version 6 (IPv6) structure. Also with virtualization may emerge interoperable sensor node platforms of heterogeneous environments from different vendors

A Long-range Context-aware Platform Design For Rural Monitoring With IoT In Precision Agriculture

The Internet of Things (IoT) applications has been developing greatly in recent years to solve communication problems, especially in rural areas. Within the IoT, the context-awareness paradigm, especially in precision agricultural practices, has come to a state of the planning of production time. As smart cities approach, the smart environment approach also increases its place in IoT applications and has dominated research in recent years in literature. In this study, soil and environmental information were collected in 17 km diameter in rural area with developed Long Range (LoRa) based context-aware platform. With the developed sensor and actuator control unit, soil moisture at 5 cm and 30 cm depth and soil surface temperature information were collected and the communication performance was investigated. During the study, the performance measurements of the developed Serial Peripheral Interface (SPI) enabled Long Range Wide Area Network (LoRaWAN) gateway were also performed

THE EFFECT OF TEACHING THROUGH DISCOVERY APPROACH ON STUDENT SUCCESS IN POLITICAL GEOGRAPHY.

Bu doktora tezinin amacı, buluş yoluyla öğretim yaklaşımının siyasi coğrafya konularının öğretiminde öğrenci başarısı üzerindeki etkisini belirlemektir. Araştırma, Milli Eğitim Bakanlığı Ankara İli Keçiören İlçesi Keçiören Lisesi 2009 / 2010 Eğitim Öğretim yılı I. Dönem Lise 12. sınıf öğrencileri (70 öğrenci) üzerinde yürütülmüştür. Araştırmada, deney ve kontrol gruplu bir deneysel desen kullanılmıştır. Yapılan araştırmada, Buluş Yoluyla Öğretim Yaklaşımı ile hazırlanan programla öğretim alan öğrenci grubu ile bu tür bir öğretim almayan öğrenci grubunun puanları arasında anlamlı bir farklılığın olup olmadığına bakılmıştır. Bu iki öğrenci grubundan buluş yoluyla öğretim yaklaşımı ile hazırlanan programla öğretim alan öğrenciler deney grubunu, buluş yoluyla öğretim yaklaşımı ile hazırlanan programla öğretim almayan öğrenciler ise kontrol grubunu oluşturmuştur. Deney ve kontrol grupları random olarak seçilen 35'er öğrenciden oluşmuştur. Uygulama amacıyla; 12. sınıf coğrafya dersi Küresel Ortam: Bölgeler ve Ülkeler öğrenme alanındaki siyasi coğrafya kazanımları seçilmiştir.Bu sınıflarda derse giren öğretmenlere uygulama başlamadan önce, Buluş Yoluyla Öğretim Yaklaşımı ilkeleri ile hazırlanan program ve etkinlikler hakkında 1 hafta süreli bilgilendirme semineri verilmiştir. Deney grubu, seçilen kazanımları buluş yoluyla öğretim yaklaşımı ile 4 hafta boyunca haftada 4 saat işlemiştir. Kontrol grubu ise, aynı kazanımları aynı sürede öğretmen merkezli mevcut yöntemlerle (anlatım ve soru-cevap gibi) işlemiştir. Son olarak araştırmanın alt problemlerinin istatistiksel analizi için gerekli verileri toplamak amacıyla, seçilen kazanımlarla ilgili, geliştirilen başarı testi uygulanmış ve her iki gruptaki öğrencilerin başarı düzeyleri belirlenmiştir. Deney ve kontrol grubunun öntest sontest başarı puanları arasında anlamlı bir fark bulunmuştur. Araştırma sonucunda; 1) Coğrafya konularının öğretiminde buluş yoluyla öğretim yaklaşımının öğrencilerde anlamlı ve uzun süreli öğrenmeyi gerçekleştirdiği, 2) Coğrafya konularının öğretiminde buluş yoluyla öğretim yaklaşımının öğrencilerde eleştirel, sezgisel ve yaratıcı düşünme, tümevarım gibi zihinsel becerileri olumlu yönde etkilediği, 3) Coğrafya konularının öğretiminde buluş yoluyla öğretim yaklaşımının öğrencilerde çıkarımlarda bulunma, yorumlama, sorgulama, analiz etme ve ilişkilendirme gibi bilgi, beceri, tutum ve davranışları geliştirdiği, 4) Coğrafya konularının öğretiminde buluş yoluyla öğretim yaklaşımının öğrenci başarısını artırdığı ortaya çıkmıştır. Araştırma sonunda, ortaya çıkan sonuçlara dayalı olarak araştırmacı tarafından önerilere de yer verilmektedir.The aim of this master thesis is to determine the effect of teaching through discovery approach on student success in political geography. This study was conducted on 70 Keçiören High School 12th grade students in Ankara in the first term of 2009 / 2010. In this study, an experimental design model with experiment and control groups was used. In the study, it was studied whether there was a meaningful difference between the student group who were taught through teaching through discovery approach and the group who did not have such an approach. Those students who were taught through teaching through discovery approach formed experiment group, and those who did not have teaching through this approach formed control group. Experiment and control groups, which consisted of 35 members each, were randomly chosen. The following course subject from grade 12 geography lesson was chosen as a topic to practise: the gains regarding the political geography in Global Environment: Regions and Countries learning domain. Before the experiment was conducted, the teachers who teach those classes were given a one-week seminar on the principles of teaching through discovery approach and the related program and activities. The experiment group were taught the gains regarding the political geography through the above mentioned approach in 4 weeks, 4 hours a week, whereas the control group was taught the same gains for the same duration through teacher based available methods (such as lecturing, questions and answers). Finally, in order to gather necessary data required for the statistical analysis of the sub problems of the study, a success test was administered and the success of the students from both groups was determined. A meaningful difference was found between the scores of pre-test post-test of experiment and control group. At the end of the study; 1. Teaching through discovery approach in geography achieved meaningful and long lasting learning, 2. Teaching through discovery approach in geography positively effected mentall skills such as critical, intuitive and creative thinking and induction, 3. Teaching through discovery approach in geography developed the knowledge, skills, attitudes and behaviours such as implication, comment, inquiry, analysis and associte, 4. Teaching through discovery approach in geography promoted student success. Suggestions made by the researcher based on the problems that emerged during this study have been presented at the end of the study

Designing a Gateway Device for Internet of Things Applications

BLE (Bluetooth Low Energy) technology is an ideal tool for implementing IoT (Internet of Things) applications, as it consumes little power and provides wireless communication. There are many applications using this technology already available on the market. These products are classified as personal applications while using the BLE supported tablets or smartphones for transmitting data and are not institutional. There are numerous studies showing that the number of IoT sensors and devices will increase rapidly. However, personal approaches cannot manage a large number of devices. In this study, a BLE gateway device which interconnects BLE and WiFi networks was developed. This device is also capable of transmitting IoT node information to a server or cloud on the Internet. The proposed design uses only BLE and WiFi stack chips and does not require an additional microcontroller unit for running gateway applications. This makes the design cost-effective and power efficient, which are important for the IoT environment

Burdur Yöresi Ballarının Polen Analizi

2004–2005 yılları arasında Burdur ili ve ilçelerinden 20 bal örnegi toplanmıs ve bu örneklerde polen analizi Lieux (1972) ve Maurizio (1951)' ya göre Sorkun (1989) tarafından belirtilen yöntemle yapılmıstır. Mikroskobik analiz sonuçlarında 33 farklı familyaya ait 58 takson teshis edilmistir. Centaurea, Compositae, Brassicaceae, Rosaceae, Pimpinella anisum ve Anthriscus taksonları çoğu istasyonda poleni görülen taksonlardır. Dominant polenler, Apiaceae, Pimpinella anisum, Anthriscus, Cardamine, Compositae, Centaurea, Ericaceae ve Dianthus taksonlarına; sekonder polenler, Brassicaceae, Fabaceae, Crepis, Xeranthemum ve Trifolium taksonlarına aittir. İncelenen örnekler içerisinde sadece Burdur( Merkez)'dan alınan örnekte dominant polen (Cardamine) ve eser polenler (Compositae, Centaurea, Fabaceae, Polygonum, Anthriscus, Scandix, Poaceae, Populus, Rosaceae, Laurus nobilis, Malvaceae, Liliaceae, Caryopyllaceae, Ficaria) bulundugu için unifloral (tek çiçek kaynaklı) bal olarak belirlenmistir. Geriye kalan 19 bal örneği multifloral bal olarak tanımlanmıstır

Cibacron blue F3GA incorporated immobilized metal chelate affinity sorbent as a high efficient affinity immobilization materials for catalase enzyme

Catalase is a metalloenzyme commonly found in almost all plant and animal tissues and catalyzes the conversion of hydrogen peroxide to less reactive molecules. It is used for the elimination of hydrogen peroxide in biological, biomedical, food and textile applications. For this purpose, a novel affinity sorbent [poly(methacrylic acid- Nisopropyl acrylamide-CB-Fe3+, (p(MAA-NIPAAM)-CB-Fe3+)] for the determination and it was first developed using MAA and NIPAAM monomers. After characterization with Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), X-ray Photoelectron Spectroscopy (XPS), adsorption parameters were determined. Reusability of p(MAA-NIPAAM)-CB-Fe3+ sorbent was determined after by determining the appropriate desorption agent for desorption of adsorbed catalase in the developed sorbent. It was determined that catalase adsorption could be performed with 0.01 g of sorbent in 45 min. The maximum adsorption capacity for catalase adsorption was determined as 243.17 mg/g with the use of sorbent. The operational and storage stability of the immobilized catalase was found to be high as expected. The conversion of H2O2 can be successfully performed by the immobilized enzyme in the prepared sorbent. It has been proven that the affinity of catalase for its substrate is increased by immobilization

Closed-loop control of oscillations.

<p><b>(a)</b> Inhibitory network. Switching on the controller at t = 200 ms leads to suppression of oscillations.<b>(b)</b> Population activity without (gray) and with control (red). <b>(c)</b> Single membrane potential trajectories of ten randomly chosen neurons in the network <b>(d)</b> Averaged trace of subthreshold dynamics. <b>(e)</b> Excitatory-Inhibitory network. Switching on the controller at t = 250 ms leads to suppression of oscillations.<b>(f)</b> Activity of excitatory population without (gray) and with control (blue).<b>(g</b> and <b>h)</b> Same as (<b>c</b> and <b>d</b>), now membrane potential of excitatory neurons is shown. For better visualization the spike trains in <b>(a)</b> and <b>(e)</b> are thinned out.</p

DFC induces SI oscillations.

<p><b>(a)</b> E-I network. Switching on the controller at t = 250 ms causes oscillatory activity. <b>(b)</b> Population activity of excitatory (blue) and inhibitory neurons (red). <b>(c)</b> Single membrane potential trajectories of ten randomly chosen excitatory neurons. Averaged trace of subthreshold dynamics is shown in red.</p

Noise injection.

<p><b>(a</b> and <b>b)</b> Injecting Gaussian noise with the same mean and variance as the control signal does not result in suppression but rather in enhancement of oscillations. <b>(c)</b> Current injected into the somata of the neurons. Gray: Gaussian noise, red: DFC signal used in <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1004720#pcbi.1004720.g002" target="_blank">Fig 2a–2d</a>. <b>(d</b> and <b>e)</b> Injecting strong Gaussian noise, <i>σ</i> = 14 mV, yields to suppression of the oscillatory activity. <b>(f)</b> The subthreshold dynamics of ten randomly chosen neurons reveal that this strong external noise results in very large fluctuations in the membrane (gray). By contrast, the fluctuations under DFC are significantly smaller (red).</p