RF MEMS Based Tunable Bowtie Shaped Substrate Integrated Waveguide Filter

A tunable bandpass filter based on a technique that utilizes substrate integrated waveguide (SIW) and double coupling is presented. The SIW based bandpass filter is implemented using a bowtie shaped resonator structure. The bowtie shaped filter exhibits similar performance as found in rectangular and circular shaped SIW based bandpass filters. This concept reduces the circuit foot print of SIW; along with miniaturization high quality factor is maintained by the structure. The design methodology for single-pole triangular resonator structure is presented. Two different inter-resonator couplings of the resonators are incorporated in the design of the two-pole bowtie shaped SIW bandpass filter, and switching between the two couplings using a packaged RF MEMS switch delivers the tunable filter. A tunning of 1 GHz is achieved for two frequency states of 6.3 and 7.3 GHz. The total size of the circuit is 70mm x 36mm x 0.787 mm (LxWxH)

Equivalent Circuit Modeling of the Dielectric Loaded Microwave Biosensor

This article describes the modeling of biological tissues at microwave frequency using equivalent lumped elements. A microwave biosensor based on microstrip ring resonator (MRR), that has been utilized previously for meat quality evaluation is used for this purpose. For the first time, the ring-resonator loaded with the lossy and high permittivity dielectric material, such as; biological tissue, in a partial overlay configuration is analyzed. The equivalent circuit modeling of the structure is then performed to identify the effect of overlay thickness on the resonance frequency. Finally, the relationship of an overlay thickness with the corresponding RC values of the meat equivalent circuit is established. Simulated, calculated and measured results are then compared for validation. Results are well agreed while the observed discrepancy is in acceptable limit

Monitoring Dan Kontrol Kondisi Air Kolam Ikan Menggunakan Blynk Berbasis Iot

Ikan koi (Cyprinus carpio koi) adalah ikan hias yang memiliki bentuk tubuh dan corak yang banyak digemari sehingga mempunyai nilai ekonomi tinggi. Namun dalam pemeliharaan dibutuhkan perawatan berhubungan dengan kualias air yang yang berpengaruh dengan keindahan, pertumbuhan dan ketahanan terhadap penyakit. Kualitas air dalam budidaya dan pemeliharaan memiliki peranan penting pertumbuhan ikan. pengawasan kualitas air harus diperiksa setiap hari. Pada penelitian ini dirancang kontol dan monitoring kualitas air berbasis IoT untuk fungsi pengecekan dan pengawaan. Pototype akuarium dirancang menngunakan dengan mikrokontroler dan beberapa sensor pendukung digunakan, seperti sensor pH air, sensor ketinggian air dan sensor suhu tertentu. Pemantauan kualitas air kolam secara real dapat dilakuan dengan Aplikasi menggunakan smart phone dengan aplikasi blink yang terhubung ke jaringan internet, sehingga pemilik dapat memantau dengan jarak jauh. Pemilik hanya melihat informasi dari ponsel. Dari hasil pengujian sistem dapat berjalan dan kualitas air dapat dipantau menggunakan smart phone. Dalam pengujian tiap sensor dapat mengukur pH dan suhu yang sesuai dengan alat ukur yang ada, diketahui bahwa saat pengujian kolam menunjukkan pH air senilai 7,64 dengan suhu 28°C..Ikan koi (Cyprinus carpio koi) adalah ikan hias yang memiliki bentuk tubuh dan corak yang banyak digemari sehingga mempunyai nilai ekonomi tinggi. Namun dalam pemeliharaan dibutuhkan perawatan berhubungan dengan kualias air yang yang berpengaruh dengan keindahan, pertumbuhan dan ketahanan terhadap penyakit. Kualitas air dalam budidaya dan pemeliharaan memiliki peranan penting pertumbuhan ikan. pengawasan kualitas air harus diperiksa setiap hari. Pada penelitian ini dirancang kontol dan monitoring kualitas air berbasis IoT untuk fungsi pengecekan dan pengawaan. Pototype akuarium dirancang menngunakan dengan mikrokontroler dan beberapa sensor pendukung digunakan, seperti sensor pH air, sensor ketinggian air dan sensor suhu tertentu. Pemantauan kualitas air kolam secara real dapat dilakuan dengan Aplikasi menggunakan smart phone dengan aplikasi blink yang terhubung ke jaringan internet, sehingga pemilik dapat memantau dengan jarak jauh. Pemilik hanya melihat informasi dari ponsel. Dari hasil pengujian sistem dapat berjalan dan kualitas air dapat dipantau menggunakan smart phone. Dalam pengujian tiap sensor dapat mengukur pH dan suhu yang sesuai dengan alat ukur yang ada, diketahui bahwa saat pengujian kolam menunjukkan pH air senilai 7,64 dengan suhu 28°C.

Analysis of combined approaches of CBIR systems by clustering at varying precision levels

The image retrieving system is used to retrieve images from the image database. Two types of Image retrieval techniques are commonly used: content-based and text-based techniques. One of the well-known image retrieval techniques that extract the images in an unsupervised way, known as the cluster-based image retrieval technique. In this cluster-based image retrieval, all visual features of an image are combined to find a better retrieval rate and precisions. The objectives of the study were to develop a new model by combining the three traits i.e., color, shape, and texture of an image. The color-shape and color-texture models were compared to a threshold value with various precision levels. A union was formed of a newly developed model with a color-shape, and color-texture model to find the retrieval rate in terms of precisions of the image retrieval system. The results were experimented on on the COREL standard database and it was found that the union of three models gives better results than the image retrieval from the individual models. The newly developed model and the union of the given models also gives better results than the existing system named cluster-based retrieval of images by unsupervised learning (CLUE)

Unsupervised Content Based Image Retrieval by Combining Visual Features of an Image With A Threshold

Content-based image retrieval (CBIR) uses the visual features of an image such as color, shape and texture to represent and index the image. In a typical content based image retrieval system, a set of images that exhibit visual features similar to that of the query image are returned in response to a query. CLUE (CLUster based image rEtrieval) is a popular CBIR technique that retrieves images by clustering. In this paper, we propose a CBIR system that also retrieves images by clustering just like CLUE. But, the proposed system combines all the features (shape, color, and texture) with a threshold for the purpose. The combination of all the features provides a robust feature set for image retrieval. We evaluated the performance of the proposed system using images of varying size and resolution from image database and compared its performance with that of the other two existing CBIR systems namely UFM and CLUE. We have used four different resolutions of image. Experimentally, we find that the proposed system outperforms the other two existing systems in ecery resolution of imag

Human-Centered Autonomy for UAS Target Search

Current methods of deploying robots that operate in dynamic, uncertain environments, such as Uncrewed Aerial Systems in search \& rescue missions, require nearly continuous human supervision for vehicle guidance and operation. These methods do not consider high-level mission context resulting in cumbersome manual operation or inefficient exhaustive search patterns. We present a human-centered autonomous framework that infers geospatial mission context through dynamic feature sets, which then guides a probabilistic target search planner. Operators provide a set of diverse inputs, including priority definition, spatial semantic information about ad-hoc geographical areas, and reference waypoints, which are probabilistically fused with geographical database information and condensed into a geospatial distribution representing an operator's preferences over an area. An online, POMDP-based planner, optimized for target searching, is augmented with this reward map to generate an operator-constrained policy. Our results, simulated based on input from five professional rescuers, display effective task mental model alignment, 18\% more victim finds, and 15 times more efficient guidance plans then current operational methods.Comment: Extended version to ICRA conference submission. 9 pages, 5 figure

The Effect of Wound Incision Care Using Honey and Povidone Iodine 10%

Introduction : Povidoe iodine often used in incision treatment. This study was aimed to explain the differences between honey and povidone iodine 10% on incision healing, were unknown. Method : This study used a true experiment design with 18 samples of 3 years old-male Guinea pigs, divided into three groups. One-control group and 2 treatment groups. This classification was done randomize. The independent variable was used of honey and 10-% povidon iodin and the dependent variable was inflammation phase (squeezing, edema, plasma of incision) and proliferation (granulation, incision edge unification, skin structure) were assessed in the third and sixth days. Data were collected by using observation of the signs both of inflammation and proliferation phase and analyzed using Chi Square with level of significance α ≤ 0.05. Result : Results showed that there was no significant difference in the third and sixth days inflammation. In contrast, a significant difference was obtained in the third and sixth days proliferation. Granulation (p< 0,05), incision edge unification (p< 0,05), establishment of skin structures (p< 0,05). Analysis : It can be concluded that the honey USAge was proven to be more effective in accelerated incision healing, increasing proliferation and reduce any infection risks. Discussion : For future research there is neeed to conduct a microscopically observation of numerous changes in collagen, PMN-cell (neutrophile) and MN-cell (lymphocyte and monocyte), inflammation and proliferation as well as incision healing process

Pengaruh Produksi, Harga, Dan Nilai Tukar Terhadap Volume Ekspor (Studi Pada Volume Ekspor Biji Kakao Indonesia Periode Januari 2010-desember 2015)

Understanding the concept of production, price, and exchange rate are objective of this research. The research was an explanatory research with quantitative approach. Secondary data which used were monthly period data from January 2010 – December 2015. Regarding the used period, total data which used is sixty. The output from this research: simultaneously, three dependent variable which used have significant affect with dependent variable. Partially, the production variable didn\u27t have significant affect, meanwhile International price and exchange rate have significant influence. Regarding the result, cocoa beans producers should improve the quality of cocoa beans which produced to enhance the national economic growth. The growth of export volume of Indonesia cocoa beans would enhance the economic growth that is useful for national welfare

Co-hort study of urinary schistosomiasis among two villages residing along Hadejia Valley, Jigawa State, Nigeria

A study was carried out to determine prevalence of urinary Schistosomiasis among two villages located along Hadejia valley in Jigawa State, Nigeria. A total of 125 urine sample from people residing in each of the two villages (Yamidi and Shawara), were screened for the presence or absence of S. haematobium eggs. Urine sample were screened using Concentration Sedimentation Technique. The overall prevalence of S. haematobium infection in Yamidi was 76.8% with mean Eggs per cubic Centiliter (EPC) of 2.9, and in Shawara the overall prevalence was 77.6% with mean EPC of 3.4. Males were found to be more infected than female in both the two villages. People aged 1 to 5 years have highest prevalence of the infection in both the two villages than people among older age group. People with haematuria have highest prevalence of 95.1% and mean EPC of 6.0 than people without haematuria that have lower prevalence of 72.0% and mean EPC of 3.4.There was no significant relationship (p &gt; 0.05) between the infection and presence or absence of haematuria. This study has established that urinary schistosomiasis is endemic in the study area.Keywords: Hadejia, Haematuria, Infection, Jigawa, Nigeria, Schistosomiasi