bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH RASIO TINGGI-LEBAR (Hw/Lw) TERHADAP KAPASITAS BEBAN LATERAL, DAN POLA RETAK DINDING GESER BERTULANGAN RINGAN AKIBAT BEBAN SIKLIK
Authors: Utomo Mochammad Surya Budi , Wibowo Ari , Zacoeb Achfas
Published: March 2019

The shear wall is a vertical structural element of a structural system that serves to withstand lateral loads, whether caused by wind or earthquake. In Indonesia is still often found structural system in old buildings that still use a minimal reinforcement ratio or in this case the lightly shear wall. The lightly sliding wall is believed to have a low lateral load capacity, but in some cases in many countries, the lightweight sliding wall is sufficiently resistant to earthquakes. The height-width ratio is an important aspect in the shear wall structure. Therefore, further research is needed on the effect of high-width ratios. This study discusses the effect of high-width ratios on shear lightly shear walls due to cyclic loads. In this study, the shear wall used as a test specimen with many test specimens was 9 shear wall walls with variations of height-width ratios (2.0, 1.3, and 1.0) or with sizes: (800x400mm), (800x600mm), and (800x800mm) . The test is carried out by providing cyclic load and axial load constant of 3% of axial capacity (Pn) of each specimen until the specimen is collapsed by the drift control method. Data in the form of loads and deviations per cycle are recorded for the analysis of collapse mechanisms. While the picture taken as a reference pattern of cracks. The results of the test show that with increasing height-width ratios can produce the smallest lateral load capacity, or vice versa. The lateral load capacity generated by each test object is SW 2.0 (1), SW 2.0 (2), SW 2.0 (3), SW 1.3 (1), SW 1.3 (2), SW 1.3 (3), SW 1.0 1), SW 1.0 (2), and SW 1.0 (3) are 1593kg, 1503 kg, 1592 kg, 3296 kg, 3388 kg, 3286 kg, 4772 kg, 4771 kg, and 4778 kg. Crack patterns that occur on each specimen have the same result that is the same occurrence of opening (gap opening) at the bottom of the wall.
PERENCANAAN TEMPAT PEMROSESAN AKHIR SAMPAH DENGAN MENGGUNAKAN METODE SANITARY LANDFILL
Authors: Samin Samin , Sunarto Sunarto , Rijalurrahman Mohammad
Published: March 2019

Pertumbuhan jumlah penduduk dan kemajuan tingkat perekonomian di suatu kota mempengaruhi peningkatan jumlah sampah. Peningkatan jumlah sampah akan menimbulkan permasalahan pada lingkungan, proses akhir di TPA (Tempat Pemrosesan Akhir Sampah). TPA Randuagung adalah TPA yang aktif di Kabupaten Malang.  Metode yang digunakan saat ini adalah open dumping. TPA Randuagung memiliki daerah cakupan pelayanan yang mencakup 4 Kecamatan antara lain Singosari, Lawang, Karangploso, dan Dau. Luas Lahan yang tersedia ± 17,65 Ha. Sistem open dumping sudah tidak layak lagi untuk menjadi tempat pembuangan akhir sampah, maka dari itu perlu dilakukan pengembangan perencanaan TPA Randuagung menggunakan metode sanitary landfill. Perencanaan TPA Randuagung dengan sistem sanitary landfill meliputi: perencanaan area pembuangan sampah 60.678m2 (ada 3 Fase), dapat menampung sampah sampai dengan 10 tahun ke depan; Analisa stabilitas lereng sampah menggunakan metode fellenius dengan angka aman 1,61; perletakan pipa gas metan secara horizontal dan vertikal; perencanaan drainase; pemasangan pipa lindi menggunakan metode tulang ikan dengan diameter pipa yang berbeda-beda;kolam penampung sementara lindi dimensi dengan ukuran 25 m × 21 m × 5 m dan dengan debit air lindi 0,00984 m3/detik. Dan pengaliran lindi dilanjutkan ke area kolam IPAL (Instalasi Pengolahan Air Lindi) yang menggunakan 3 kolam, yaitu kolam stabilisasi, kolam aerasi dan kolam maturasi.
PENGARUH PENGGUNAAN BAHAN SERBUK MARMER PADA STABILISASI TANAH LEMPUNG EKSPANSIF (Kasus Tanah Lempung Ekspansif di Daerah Citra Land Surabaya)
Authors: Setyono Ernawan , Sunarto Sunarto , Gumilang Anggita Moro
Published: March 2019

Konstruksi jalan diatas tanah dasar yang bersifat ekspansif banyak dijumpai di Indonesia. Jenis tanah ini akan mengembang dan dapat menyebabkan jalan atau struktur terangkat disaat kondisi kadar air tinggi. Sebaliknya disaat kadar airnya rendah, tanah ekspansif akan menyusut dan dapat menyebabkan penurunan jalan (shrinkage). Akibat perubahan muai susut (swelling and shrinkage activity) kontruksi jalan menjadi tidak stabil sehingga untuk jangka waktu yang lama terjadi keretakan memanjang dan bergelombang. Salah satu upaya untuk mendapatkan sifat tanah yang memenuhi syarat teknis tertentu adalah dengan metode stabilisasi tanah menggunakan bahan tambah serbuk marmer dari hasil olahan pabrik marmer di Tulungagung, Jawa Timur. Untuk mengetahui pengaruh penambahan serbuk marmer terhadap kekuatan dan nilai daya dukung tanah dibuktikan dengan pengujian Unconfined Compression Test dan uji California Bearing Ratio. Benda uji dibuat dengan variasi penambahan serbuk marmer sebesar 5%, 10%, 15%, 20%, 25%. Dari pengujian menunjukkan bahwa tanah lempung ekspansif yang distabilisasi dengan serbuk marmer dapat memperbaiki sifat fisik dan mekanik tanah. Pada uji sifat fisik tanah sampel yang diambil termasuk tanah lempung dengan tingkat plastisitas rendah. Sedangkan nilai kuat tekan dan daya dukung tanah meningkat setelah distabilisasi dengan serbuk marmer.
PEMANFAATAN LIMBAH ABU MARMER SEBAGAI FILLER TERHADAP KARAKTERISTIK MARSHALL PADA CAMPURAN LAPIS TIPIS ASPAL PASIR (LATASIR) B
Authors: Amal Andi Syaiful , Saputra Wahyuddin
Published: March 2019

Latasir (HRSS) Kelas B merupakan campuran yang ditujukan untuk jalan-jalan dengan lalu lintas ringan, khususnya pada daerah dimana agregat kasar tidak tersedia. Campuran ini mempunyai ketahanan alur (rutting) yang rendah oleh sebab itu tidak boleh digunakan dengan lapisan yang tebal, pada jalan dengan lalu lintas berat dan pada daerah tanjakan. Struktur abu marmer yang halus dan dapat lolos saringan #200 layaknya semen, sehingga dapat dikaji sebagai bahan material alternatif filler dalam campuran aspal khususnya latasir kelas b. Penelitian ini menggunakan metode Central Quality Control & Monitoring Unit (CQCMU). Tujuan dilakukan penelitian ini adalah untuk mengetahui nilai karakteristik marshall pada campuran latasir kelas b dengan filler abu marmer dan mengetahui presentase kadar optimum yang digunakan sebagai pengganti abu marmer berdasarkan kadar aspal optimum. Hasil pengujian campuran latasir kelas b menggunakan filler abu marmer dengan kadar aspal optimum 9,01% diperoleh presentase kadar optimum abu marmer sebesar 52,22% maka diperoleh nilai karakteristik Marshall adalah Marshall Stability 800,00 Kg, Marshall Qoutient 1,9 Kg/mm, Volume Air Void 4,9 %, Film Thickness 8,56 μm.
KUAT TEKAN BETON AWAL TINGGI DENGAN VARIASI PENAMBAHAN SUPERPLASTICIZER DAN SILICA FUME
Authors: Prayuda Hakas , Saleh Fadillawaty
Published: March 2019

Concrete is one of the construction materials of combination between cement, fine aggregate, coarse aggregate, and water mixed into one solid mass. The work of concrete making can be added a mineral additive as well as chemical additive (admixture) for the interest in construction work. In some cases construction work is desirable for concrete to produce optimum strength during the early age of the concrete so that the timing of concreting work can be shortened. The strength of concrete at the early age can be increased with added mineral (additive) and chemical (admixture) materials. This research made a mixture of concrete with 7 variations of mixture with total specimen 54 sample of cylindrical size with diameter 15 cm and height 30 cm. Tests conducted in the form of testing workability and compressive strength of concrete at the age of 3 days, 7 days and 28 days. Through this study obtained the right composition to make concrete with a high early age of compressive strength.
STRUCTURAL BEHAVIOR OF PILE CAP 3 PILE WITH EKSENTRIC LOAD DESIGNED USING STRUT AND TIE MODEL WITH NUMERICAL METHOD
Authors: Taufik Panji Ginaya , Sulistyo Djoko , Aminullah Akhmad
Published: March 2019

Pile cap is a structure to distribute load from the upper structure to the sub structure. Often the planning of the pile cap is approached as a two way slab or beam with pile as restrain, by consider the bending and shear separately. As is the case with conventional methods that consider 1-way shear, 2-way shear, and bending separately. The strut and tie model can be used as an alternative method in designing a pile cap, by approaching the stress trajectory with the truss model. In this study, a pile cap will be designed using the conventional method and the strut and tie model, the pile cap with 3 pile cap and an eccentric load. Then the results are tested numerically using Abaqus to determine the difference in behavior. The main reinforcement results from the strut and tie model method are more evenly stressed than the conventional method, also the vertical load needed to achieve the main reinforcement yield stress strut and tie model (1100 kN) is greater than the conventional method (900 kN).
PENGELOLAAN DAN PENGENDALIAN AIR HUJAN DALAM PERUMAHAN SEBAGAI UPAYA KONSERVASI AIR TANAH
Authors: Pratomo Daru , Suranto Muchammad
Published: March 2019

Limpahan air hujan yang tidak terkendali membuat masalah banjir. Usaha dalam menerapkan teknik drainase menjadi pilihan dalam rangka menghadapi global warming yaitu sistem drainase air hujan berwawasan lingkungan. Sistem ini menurut [Sunjoto, 2007] terdiri dari tiga kelompok yaitu Sumur Peresapan Air Hujan (Recharge Well), Parit Resapan Air Hujan (Recharge Trench) dan Taman Resapan Air (Recharge Yard) dan yang terakhir ini juga disebut Taman Bertanggul [Sujono, 2005].Metode yang digunakan dalam penelitian ini dengan menggunakan metode analisis kuantitatif. Pengambilan sampel dilakukan metode yaitu metode purposive sampling untuk pengukuran permeabilitas  yang  mempertimbangkan pengambilan sampel pada lahan yang belum diberi perkerasan seperti lahan kosong maupun pekarangan rumah sedangkan untuk pengukuran kedalaman  muka  air  tanah  dengan mengukur kedalaman permukaan air sumur eksisting dan dengan cara menggali rencana sumur resapan yang akan dipakai dalam komplek perumahan. Berdasarkan pendekatan perhitungan metode SNI 03-2453-2002 kebutuhan sumur resapan untuk menampung limpasan air hujan akibat dari tertutupnya lahan terbuka oleh rumah dan carport sebanyak 20 unit. Sedangkan sebagai pengganti lahan yang tertutup oleh paving block, dibuat 8 unit. Dengan dimensi sumur resapan diameter 1 m, kedalaman 1,5 m atau 3 buah buis beton untuk setiap sumur resapan.
ALTERNATIF POLA OPERASI EMBUNG SUKODONO KECAMATAN PANCENG KABUPATEN GRESIK UNTUK KEBUTUHAN AIR BAKU DAN AIR IRIGASI
Authors: Setyono Ernawan , Rudianto Amirul Satrio
Published: March 2019

Air merupakan kebutuhan pokok yang sangat penting untuk memenuhi kelangsungan hidup manusia dan semakin meningkat seiring dengan meningkatnya jumlah penduduk, sedangkan persediaan air di bumi tetap. Salah satu upaya mengatasi masalah tersebut adalah dengan menampung air di embung. Embung Sukodono mempunyai kapasitas tampungan maksimum sebesar 1,547 juta m3.Embung Sukodono memanfaatkan suplesi sungai Bengawan Solo bagian hilir yang terletak di desa Sekargadung dengan inflow debit pemompaan rencana sebesar 230 liter/detik untuk memenuhi outflow berupa kebutuhan air baku dan irigasi masyarakat Kecamatan Panceng dan Kecamatan Dukun hingga tahun 2039. Kebutuhan air baku pada jam puncak pada tahun 2039 sebesar 73,76 liter/detik dan kebutuhan irigasi maksimum sebesar 250,93 liter/detik seluas 250 Ha. Dalam studi ini simulasi pola operasi embung terbagi menjadi 3 alternatif pemompaan. Dari hasil simulasi rencana pola operasi Embung Sukodono, rencana pola operasi yang digunakan selama 25 tahun adalah alternatif 3. Pada alternatif 3 kapasitas debit pemompaan dapat diturunkan dari 230 lt/dtk menjadi 200 lt/dtk pada musim kering dan lama pemompaan dapat diturunkan dari 12 jam pemompaan menjadi 8 jam pemompaan pada musim kering namun elevasi muka air embung tetep terjaga di atas elevasi tampungan minimum operasi.
Bayesian Approximation Techniques for Scale Parameter of Laplace Distribution
Authors: Jan Uzma , Ahmad S. P.
Published: March 2019

The Bayesian estimation of the scale parameter of a Laplace Distribution is obtained using two approximation techniques, like Normal approximation and Tierney and Kadane (T-K) approximation, under different informative priors.
Importance of personality and career stress for flight attendants’ career satisfaction
Authors: Yang Peter , Yang Chih-Chien
Published: March 2019

We examined flight attendants’ career satisfaction and addressed how career stress affects the relationship between personality and career satisfaction. After conducting a focus group interview with 6 flight attendants and 3 senior flight attendants and a pilot study with 122
employees of a large airline corporation in Taiwan to develop the Career Stress Scale, we examined the validity of a model that underlies the dispositional effects of extraversion and neuroticism on flight attendants’ career stress and satisfaction (N = 152). The results demonstrated
that extraversion had a significant and positive effect on career satisfaction, and that career stress played a mediating role in linking neuroticism and career satisfaction. We confirmed that considerable emphasis must be continually placed on the process of recruiting and selecting appropriate
candidates whose extraversion has reached a high level. Also, the Career Stress Scale can be used in workplace counseling and employee assistance programs to achieve stress management and employee empowerment.
Fast decomposition of food waste to produce mature and stable compost
Authors: Priyambada Ika Bagus , Wardana Irawan Wisnu
Published: March 2019

Food waste can be meat, fish, cooked food scraps, moldy bread, bone scraps, cakes, expired foods, dairy products, fruits and vegetables. Food waste which is put into the trash will decay and produce a foul odor which in turn will invite flies and cause potentially diseases. Most of the food waste that is processed using the composting process needs to spend a relatively long time, which is about 1-3 months or even 6-12 months. This study aims to accelerate composting time through the addition of additive microorganisms in various quantities. Four aerobic composter reactors were utilized in this study. Variations of additive microorganisms added to the research object were 0 in reactor (control), 8 g in B2 reactor, 16 g in B3 reactor, and 32 g in B4 reactor. All reactors were added with dolomite lime. During the composting process temperature, pH, water content and macroelement were tested. The results showed that the mature and stable compost was reached on the seventh day and produced from B2 reactor. In That reactor treated food waste and additive microorganisms with a ratio of 7:3, and 1 g dolomite lime. The level of C/N ratio produced from B2 reactor was 16.71. The value of C/N ratio was better than B3 reactor which produced C/N of 18.37. The control reactor produced a C/N ratio of 21.84 and mature and stable compost was reached on the 14th day. All in all, this study was regarded to be successful in accelerating the degradation of food waste into mature and stable compost in just seven days.
Prevalence of C-shaped second mandibular molar canals in the population of central Serbia: A cone-beam computed tomography study
Authors: Zivanovic Suzana , Papic Milos , Radovic Mirjana , Misic Aleksandra , Zivic Milos , Popovic Milica
Published: March 2019

Background/Aim. C-shaped canals are a complex morphological variation of the tooth root canal system that, if present, could greatly affect the outcome of endodontic therapy. The prevalence of these canal configurations varies between the populations of different ethnic and geographical origins. Therefore, the goal of this study was to analyze the prevalence and morphology of mandibular second molar C-shaped canals in the population of Central Serbia. Methods. The study included a total of 1 99 mandibular second molars receiving a cone-beam computed tomography (CBCT) examination and determining the presence of C-shaped canal systems, their configuration, minimal wall thickness and its relative position on axial cross-sections at the coronal, middle, and apical level. Results. The prevalence of C-shaped mandibular second molars was 5.53%. C1 canal configuration was the most frequent at the coronal cross-section, while C2 configuration was the most frequent at middle and apical cross-sections. Minimal wall thickness decreased going apically, with the mean value of 1.01 mm at the coronal, 0.87 mm at the middle, and 0 .67 mm at the apical cross-sections. Minimal wall thickness was mostly directed lingually at all cross-sectional levels. Conclusion. C-shaped canals should be expected in mandibular second molars of the population of Central Serbia. CBCT was shown to be the most valuable technique to determine C-shaped canals and facilitate understanding of the C-shaped canal morphology; its implementation could improve the success of endodontic therapy, especially if the complex root canal configuration is present.
Influence of Helium-Neon Laser on Some Virulence Factors of Staphylococcus Aureus and Escherichia Coli
Authors: Abo-Ksour Mohammed F. , Al-Jubori Sawsan S. , Jawad Hussein A.
Published: March 2019

This work aims to investigate the effect of Helium-Neon laser on locally isolated Staphylococcus aureus & Escherichia coli bacteria; their resistance pattern, virulence factors, and their plasmid content. Bacteria were collected from patient suffering from urinary tract infections, septicemia, wound, and burn infections, then isolates were identified according to their characteristics, features; morphological, biochemical tests, and API systems. Out of Eighty-seven samples, twenty-seven isolates of S. aureus and thirteen isolates of E. coli were isolated. The results showed that after laser treatment, the diameter of inhibition zone increased for almost of the used antibiotics beside some isolates became sensitive especially after 2 min of laser exposure time. The hemolysin production was disappeared in (%40) of E. coli and (%20) of S. aureus after ten min of irradiation, while it decreased to half in another S. aureus isolate. All S. aureus and E. coli isolates loosed their ability to produce β-lactamase enzymes; some of these isolates loosed it after 5 minutes and the others after 10 minutes of irradiation. The results showed that laser irradiation hasn't any effect at any exposure time on adhesion factors of both S. aureus and E. coli isolates. Plasmid profile of Irradiated E. coli illustrated disappearing of DNA plasmid bands as well as RNA after ten min of irradiation.
Study the Relation between the Incidence of Giardiasis and Some Epidemiological Factors in Some Regions of Baghdad City
Authors: Majeed Hadeel A.
Published: March 2019

In this work, the incidence of giardiasis was investigated in some regions of Baghdad. Different factors were studied such as age, gender, personal hygiene and eating habits, in order to find its correlation with the prevalence of giardiasis. The study was carried out during the period of April 2014 till March 2015. During this period a total of 375 samples have been examined. The total rate of infection was 68/375 (18.13%. The most frequent noticed clinical symptoms in giardiasis cases are abdominal pain 60.97%, diarrhea 41.46% and fever 35%. For the studied factors, each of the age, personal hygiene and eating habits showed a relation with the incidence of giardiasis.
Antimicrobial Activity of Freshwater Cyanobacterium Westiellopsis prolifica
Authors: Al-Rrubaie Ghaidaa , Zaki Neihaya Heikmat , Latif Shurooq
Published: March 2019

The acetone and hexane of Westiellopsis prolifica extracts were examine efficiency against patho-genic bacterial and fungal isolates by using two methods: agar well diffusion and turbidiometric (tube method) against three Gram positive bacteria"Staphylococcus aureus, Bacillus subtilis, and Streptococcus sp." and three Gram- negative bacteria" Shigella sp., Proteus sp. and Pseudomonas aeruginosa " in additions to two isolates of fungi "Aspergillus niger and Candida albicans". The re-sults showed that crude acetone extract for W. prolifica better than the haxane extract and more efficient on negative gram bacteria than positive gram bacteria. The results of the agar well diffusion method evaluated that W. Prolifica acetone extract has the highest antibacterial activities against Streptococcus sp., S. aureus and A.niger with an inhibition zone of (20) mm, and the inhibition diam-eter to other bacteria and fungi were between(15-10) mm.While tube method showed that the ace-tone extract exhibited the highest inhibition against A.niger and less inhibiting to C. albicans. Purifica-tion of the acetone extracts was made by silica gel column chromatography, and among the five groups extracts, Group 2 (Benzene 50ml) was selected and analyzed by GC-MS. The presence of main components identified in the extract as alcohols, acids, monoterpene eucalyptol, hydrocarbons (unidecane) aromaticslike, Para- Xylene and 1,2,3 trimethyl benzene, Phytol, n-Hexadecanoic acid, etc. These purified active compounds take part into broad horizons in the fields of biotechnology and pharmacy.
Zinc Metal Ion Affected the Structural Stability of Amyloid-Like Nanofibrils
Authors: Al-Garawi Zahraa S.
Published: March 2019

Synthetic peptides that self-assemble into well-defined structures with a cross-β arrangement are called amyloid-like fibrils. Amyloids are associated with a list of disorders and neuro-degenerative diseases, such as Alzheimer's and Parkinson`s disease. We previously showed that amyloid-like nanofibrils with a repeating motif “IHIH” were functional fibrils. They were able to bind a metal ion through imidazole moieties and mimic the native carbonic anhydrase enzyme by hydrolysing the CO2 molecule. Thus, these synthetic amyloid fibrils were suggest-ed to be good candidates to moderate and update the modern enzymatic molecules. This study aims to shed a light on the stability of these amyloid nanofibrils over a study period of 25 days, in the presence/absence of a metal ion. The work continued for approximately 7 months in the Biochemistry department, School of Life Sciences at the University of Sussex in the United Kingdom. A set of designed peptides with a repeating motif “IHIH” were ex-plored, based on some structural studies. Short and long peptides with free ends as well as closed ends were investigated. Peptides allowed to self-assemble with and without a metal ion (zinc) were then examined using circular dichroism, fluorimetry and electron microscopy for structural biophysical analysis. Regardless of the metal ion contribution, peptides showed stable secondary structures with a -sheet conformation for the incubation time of 25 days. Their morphologies did not appear to change over time. However, the presence of a zinc ion has an effect on the secondary structure of the mature fibrils. Results indicated that fibrils grown with the zinc ion have a significantly higher propensity to form -sheets secondary structures during incubation time. The presence of a zinc ion also affected the dimensions of the amyloid-like fibrils by the end of the study course, at which point they significantly re-duced. This effect of zinc ion on synthetic amyloid fibrils has not been previously reported. The stabilities of the zinc-nanofibrils point to their potential for use in modifying or updating the enzyme-mimic analytical reactions. The effect of adding zinc on the fibrillation seems to be crucial. Although it apparently improved the -sheet assembly, it affected the width/length of the synthetic amyloids. This effect could be promising toward reducing the generation of amyloid fibrils and ultimately understanding the pathogenesis of Alzheimer disease.
Fourth Derivative and Compensated Area under the Curve Spectrophotometric Methods Used for Analysis Meloxicam in the Local Market Tablet
Authors: Abbas Ruba Fahmi , Mahdi Neda Ibrahim , Amer Waheb Ali Amer Waheb , Aliwi Amjad Gali Aliwi Gali , Falih Marwa S.
Published: March 2019

Two Rapid, direct, ecological friendly and economical spectrophotometric methods were used for estimation of meloxicam in the market Tablet dosage form. The First method is based on the use the fourth order derivative spectrum (D4) and the second method is depend-ed on the ratio of the area under the curve for the two peaks in the drug (Compensated area under the curve). The linear calibration graphs of the two methods were measured in the con-centration range (5-35)mg/l and the average of recoveries for local market Tablet (AWA)® were 99.8% for D4 method and 100.2% for CAUC method which indicating a good accuracy and precision for these methods. In this study, the results obtained by these suggested meth-ods have been successfully statistically compared by t-test and Mann-Whitney test showed a good agreement.
Deep Learning Machine using Hierarchical Cluster Features
Authors: Salman Sara , Soud Jamila H.
Published: March 2019

Deep learning of multi-layer computational models allowed processing to recognize data representation at multiple levels of abstraction. These techniques have greatly improved the latest ear recognition technology. PNN is a type of radiative basis for classification problems and is based on the Bayes decision-making base, which reduces the expected error of classification. In this paper, strong features of images are used to give a good result, therefore, SIFT method using these features after adding improvements and developments. This method was one of the powerful algorithms in matching that needed to find energy pixels. This method gives stronger feature on features and gives a large number of a strong pixel, which is considered a center and neglected the remainder of it in our work.
Each pixel of which is constant for image translation, scaling, rotation, and embedded lighting changes in lighting or 3D projection. Therefore, the interpretation is developed by using a hierarchical cluster method; to assign a set of properties (find the approximation between pixels) were classified into one.
Fingerprints Authentication Using Grayscale Fractal Dimension
Authors: Alsaidi Nadia. M. G. , Mohammed Arkan J. , J. Abdulaal Wael
Published: March 2019

Characterizing of visual objects is an important role in pattern recognition that can be performed through shape analysis. Several approaches have been introduced to extract relevant information of a shape. The complexity of the shape is the most widely used approach for this purpose where fractal dimension and generalized fractal dimension are methodologies used to estimate the complexity of the shapes. The box counting dimension is one of the methods that used to estimate fractal dimension. It is estimated basically to describe the self-similarity in objects. A lot of objects have the self-similarity; fingerprint is one of those objects where the generalized box counting dimension is used for recognizing of the fingerprints to be utilized for authentication process. A new fractal dimension method is proposed in this paper. It is verified by the experiment on a set of natural texture images to show its efficiency and accuracy, and a satisfactory result is found. It also offers promising performance when it is applied for fingerprint recognition.
The Impact of Oil Well Fires on the Free Space Optical Systems
Authors: Mohammed Firas S. , Shaker Farouk K.
Published: March 2019

Aerosol particles in oil fire plumes caused crucial air pollution. The smoke plumes from the blazes initially launched 200-400 m into the air and then continued to rise. The presence of liquid and solid aerosols may cause severe disturbance to the propagation of optical and infrared waves, thus can produce harmful effects on the wireless communication systems. In this paper, we analyze the bit error rate (BER), single to noise ratio (SNR), Q- factor and outage performance of single-input single-output (SISO) and multiple-input multiple-output (MIMO) FSO systems under attenuation of dense smoke conditions. Obtained results demonstrated that the performance of (SISO) FSO link is degraded from the Fog, Smoke and acid-rain Attenuation due to their chemical nature, their size and their concentration. As well, (MIMO) FSO link is a highly efficient way can be minimal smoke pollution effects
Superhydrophobic Aerogel as Sorbents for Iraqi Crude Oil Leaked In Water
Authors: Al-sharuee Israa F.
Published: March 2019

A superhydrophobic aerogel has been utilized as adsorbed the Crude oil leaked during transport in the waters of the Tigris and Euphrates rivers, and determine the capacity absorbing of the aerogel powder for crude oil. This technique is very important to get rid of environmental pollution caused by the leakage of crude oil in water, which in turn cause the death of fish, this application is an important economic wealth in the country, preliminary tests on Tigris and Euphrates rivers mixed with the crude oil, by using the aerogel in powder form to clean the water from crude oil, the study depended on two parameters are surface area and contact angle. We found that the increasing on surface area lead to increasing on the capacity of adsorbing the crude oil from water, also this result with contact angle.
Enhanced Ultraviolet Photodetector Based on Mg-Doped ZnO Nanorods Films
Authors: Hameed Hussein Abdullah
Published: March 2019

Magnesium-doped zinc oxide (ZnO: Mg) nanorods and nanotubes films were prepared by hydrothermal method deposited on glass substrates. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), photoluminescence (PL), and optical absorption spectroscopy (UV) were performed to characterize the prepared films. X-ray diffraction analysis showed a decrease in the lattice parameters of Mg doped ZnO NRs. The Photoluminescence of the undoped and Mg-doped ZnO NRs displayed a near band edge. At 10 V bias, the metal-semiconductor-metal (MSM) ultraviolet (UV) photodetector performance of the Mg-doped ZnO prepared for various Mg concentrations of 0.0, 0.02, and 0.06 was investigated under radiation of 40μW/cm2 at the wavelengths of 365 and 385 nm UV light. The responsivity, detectivity and quantum efficiency of Mg-doped based on MSM detector were 0.118A/W, 1.0579*1012 and 40.05157 under UV of wavelength 365nm respectively.
Mechanical and Thermal Stability of Epoxy – TEOS Hybrids Materi-als using Sol-Gel Method
Authors: Hussein Seenaa Ibrahim , Ali Nadia Abbas , Jaafar Harith Ibrahim , Muslem Zaniab Raheem
Published: March 2019

Sol-gel method is the simplest method and has to preparation of nano particles, nano fibers, and nano flaks. The preparation of hybrid epoxy thermosets enables their improvement in characteristics such as mechanical properties (bending,and hardness), thermal properties. The effect of water absorption on bending and hardness test for tetraethylorthosilicate (TEOS) and epoxy hybrid have been investigated. TEOS with (0%,2%,4%,6%and 8%) volume per-centage mixed with epoxy to prepared sheets of hybrid, these sheets cut as samples for ASTM water absorption, bending and hardness tests.
The results show that, adding TEOS to epoxy will increase absorbance of water. bending test shows that there are increase in values of bending stress with increasing TEOS but after im-mersion in water all the values for bending stress will reduce. Hardnessvalues at least for the samples immersion in water from dry samples, occur the diffusion of molecules water in the polymer and hybrids leads to space molecular chains for each other and decrease the hard-ness values. Thermal stability of hybrids increase with increasing TE
Ver e apre(e)nder a cidade colonial brasileira na contemporaneidade: uma experiência de atividade integrada no Curso de Arquitetura e Urbanismo da UFRN .
Authors: Brasil Amiria Bezerra , Do Nascimento José Clewton , De Albuquerque Glauce Lilian Alves
Published: March 2019

O artigo trata da experiência de integração entre componentes curriculares do curso de Arquitetura e Urbanismo da Universidade Federal do Rio Grande do Norte (UFRN) com foco na apreensão da cidade contemporânea, que tenha a particularidade de apresentar em seu quadro urbano elementos representativos da cidade colonial brasileira, com destaque para a natureza barroca dos espaços. A integração acontece entre os componentes Planejamento e Projeto Urbano e Regional 1, História e Teoria da Arquitetura e do Urbanismo 1 e Comunicação Visual, no 3o período do curso. O objeto de estudo é uma cidade próxima a Natal, e busca-se rebater os conteúdos teórico-metodológicos de leitura e apreensão dos elementos caracterizadores da cidade em questão, a partir dos conteúdos discutidos em cada componente. Como resultado da integração é desenvolvido uma atividade conjunta, com o objetivo de fazer com que os discentes articulem de maneira interdisciplinar o conteúdo apreendido. A atividade tem tido como resultado final diversos produtos, mas será focado nesse artigo o do semestre 2017.2 que teve como tema educação patrimonial e como cidades-objeto João Pessoa/PB e Olinda/PE.
Apontamentos sobre a experiência do ensino de Urbanismo para os cursos de Engenharia Civil e Engenharia Ambiental e Sanitária
Authors: Carvalho Ramon Silva de , Gennari Luciana Alem
Published: March 2019

Este trabalho aborda o ensino da disciplina Urbanismo, parte da estrutura curricular do curso de Engenharia Civil e do curso de Engenharia Ambiental e Sanitária da Universidade [omitido para avaliação cega]. Objetiva-se analisar como o conteúdo da disciplina vem sendo trabalhado e (re)avaliar as práticas aplicadas em uma matéria tida como complementar na área das engenharias. Para tanto, procede-se à análise do histórico da disciplina e das novas estratégias adotadas pelos professores recém-contratados. Deste modo, pretendemos demonstrar as dificuldades de se trabalhar um escopo abrangente em um tempo tão exíguo e a necessidade de priorização de determinados pontos estratégicos para a compreensão do fenômeno urbano.
Türkiye’de Turizm İşletmeciliği Lisans Programları Müfredatlarında Teknoloji Dersleri
Authors: Kaplanseren Ferkan , Aksatan Manolya
Published: March 2019

Turizm
endüstrisinin teknolojiyi yönetebilen ve karar verme sürecinde kullanabilen,
nitelikli insan kaynağı ihtiyacı günden güne artmaktadır. Bu çalışmanın amacı,
Türkiye’de turizm işletmeciliği lisans programlarının müfredatlarında yer alan
teknoloji derslerini belirlemektir. Çalışmada 38 turizm işletmeciliği programının
müfredatında yer alan 163 ders belirlenmiş ve içerikleri analiz edilmiştir.
Dersler, otomasyon sistemleri, bilgi teknolojileri, elektronik disiplinler ve
yönetim bilişim sistemleri şeklinde sınıflandırılmıştır. Bulgular üzerine
akademisyenler ile görüşmeler yapılmış ve içerik analizi yöntemi ile
incelenmiştir. Görüşmelerin bulguları, teknoloji derslerinin çeşidi, sayısı ve
niteliği üzerinde etkili olan kısıtları, programlara dair beklentileri ve
önerileri göstermektedir. Bu çalışma, müfredat planlama sürecine ve nitelikli
insan kaynağı yetiştirme çalışmalarına katkı sağlamaktadır.
Control of Cascaded H-Bridge Multilevel Inverter Based on Optimum Regulation of Switching Angles, and the FPGA Implementation
Authors: Firouzkouhi Hatef
Published: March 2019

A new concept in control of cascaded H-Bridge multi-level inverters is proposed in this paper. According to this concept, switching angles are considered to be independent from the fundamental voltage. A polynomial term is presented to show the relation between switching angles and DC voltages. Based on this concept, Total Harmonic Distortion (THD) calculations are updated and proved to be independent from the fundamental voltage. Thus, once calculated for minimum THD, the switching pattern can be used for any required level of output voltage. To examine the effectiveness of the proposed method, it is applied in control of an eleven level inverter. The simulation results are demonstrated and verified through experiments with a setup controlled by Xilinx SPARTAN3 family FPGA (XC3S400-PQG208).
Increasing Plant Access to Legacy Phosphorus, with a Focus in the Tropics
Authors: Prochnow, Luís , Peterson Heidi , Bruulsema Tom
Published: March 2019

Tropical soils have a high tendency to convert applied P into less available forms. This article discusses readily adoptable agronomic practices that have good potential to help plants to access this pool of “legacy P.”
Association entre la condition physique et la santé dans un échantillon représentatif à l’échelle nationale d’enfants et de jeunes canadiens de 6 à 17 ans
Authors: Lang Justin J. , Larouche Richard , Tremblay Mark S.
Published: March 2019

Introduction

Cette étude a porté sur la relation entre la condition physique et divers indicateurs de santé physique et psychosociale au sein d’un échantillon représentatif de la population nationale d’enfants et de jeunes canadiens de 6 à 17 ans.

Méthodologie

Nous avons procédé à l’analyse des données secondaires de l’Enquête canadienne sur les mesures de la santé (cycles 1 et 2; 2007-2011). Nous avons utilisé comme mesures de la condition physique la capacité cardiorespiratoire (CCR; Physitest aérobie canadien modifié), la force (force de préhension), la flexibilité (flexibilité du tronc) et l’endurance musculaire (redressements assis partiels) et comme indicateurs de la santé physique des biomarqueurs mesurés directement (cholestérol total et LHD [lipoprotéines de haute densité], protéine C réactive, glucose et hémoglobine glyquée [HbA1c]) ainsi que des mesures de l’adiposité, de la fréquence cardiaque au repos et de la pression artérielle. La santé psychosociale a été évaluée au moyen du Questionnaire sur les points forts et difficultés (Strengths and Difficulties Questionnaire). Des régressions linéaires multiples ont permis de définir l’association entre les variables stratifiées selon les groupes d’âge et le sexe.

Résultats

L’analyse a porté sur 3 800 enfants et jeunes (48,9 % de filles). La CCR a été associée favorablement et de manière significative avec la plupart des indicateurs de santé physique chez les participants des deux sexes. Par comparaison avec la CCR, un nombre inférieur d’associations favorables significatives a été observé pour la flexibilité et l’endurance musculaire dans les différents groupes d’âge et selon le sexe. La force a été associée à une adiposité supérieure chez les deux sexes, de même qu’à une fréquence cardiaque inférieure chez les enfants de sexe masculin (β = −1,9; IC à 95 % : −2,9 à −1,0) et chez les jeunes filles (β = −2,0; IC à 95 % : −2,7 à −1,2). Peu d’associations favorables significatives ont pu être relevées entre les mesures de la condition physique et la santé psychosociale dans cet échantillon d’enfants et de jeunes.

Conclusion

D’après ces résultats, la condition physique, et tout particulièrement la CCR, constitue un indicateur important de la santé physique chez les enfants et les jeunes canadiens de 6 à 17 ans.
El fondo codicológico del Archivo Capitular de Segovia. Manuscritos literarios
Authors: Jerez Cabrero Enrique
Published: March 2019

Este trabajo se propone tres objetivos: por un lado, presentar sucintamente el Archivo (y Biblioteca) Capitular de Segovia, con aportación de datos históricos y de pormenores descriptivos en torno a su formación y naturaleza; en segundo lugar, describir por encima y valorar grosso modo su fondo codicológico en particular; y por último, aportar algunos detalles sobre ciertos códices de contenido (digamos) “literario”, que puedan dar idea de las posibilidades de investigación que ofrece el estudio de esta colección, carente todavía de catálogo impreso.
La correspondencia entre José Nicolás de Azara y Giambattista Bodoni. Edición de cartas y borradores
Authors: Souto Noelia López
Published: March 2019

En este trabajo se plantea la reconstrucción del epistolario privado mantenido entre el español José Nicolás de Azara y su amigo italiano Giambattista Bodoni a partir de la edición de sus cartas y borradores conservados. Se exponen las dificultades y limitaciones histórico-filológicas implícitas debido al trabajo con textos movedizos como las minutas e incluso inciertos, pues no ofrecen un testimonio veraz del supuesto envío ni del texto finalmente escrito. A más, se plantea el problema de la censura, para el caso del archivo de Azara, así como de la autocensura por lo que se refiere al amplio archivo epistolar de Bodoni, custodiado en la Biblioteca Palatina de Parma y en el que puede constatarse una tendencia selectiva en la conservación de documentos, intervención del tipógrafo que constituye un intento claro de moldear su propia memoria futura.
Pedro de Valencia, Obras completas VI. Escritos varios, J.Mª Nieto Ibáñez (coord.), León, Universidad de León-Instituto de Humanismo y Tradición Clásica, 2012, 661 pp. ISBN 978-84-7719-433-0
Authors: Rincón González Mª Dolores
Published: March 2019

Reseña de Pedro de Valencia, Obras completas VI. Escritos varios, J.Mª Nieto Ibáñez (coord.), León, Universidad de León-Instituto de Humanismo y Tradición Clásica, 2012, 661 pp. ISBN 978-84-7719-433-0
Intermittent transition to chaos in vibroimpact system
Authors: Bazhenov V.A. , Pogorelova O.S. , Postnikova T.G.
Published: March 2019

Chaotic behaviour of dynamical systems, their routes to chaos, and the intermittency in particular are interesting and investigated subjects in nonlinear dynamics. The studying of these phenomena in non-smooth dynamical systems is of the special scientists’ interest. In this paper we study the type-III intermittency route to chaos in strongly nonlinear non-smooth discontinuous 2-DOF vibroimpact system. We apply relatively new mathematical tool – continuous wavelet transform CWT – for investigation this phenomenon. We show that CWT applying allows to detect and determine the chaotic motion and the intermittency with great confidence and reliability, gives the possibility to demonstrate intermittency route to chaos, to distinguish and analyze the laminar and turbulent phases.
Noether’s theorems for the relative motion systems on time scales
Authors: Gong Sheng-nan , Fu Jing-li
Published: March 2019

This paper propose Noether symmetries and the conserved quantities of the relative motion systems on time scales. The Lagrange equations with delta derivatives on time scales are presented for the system. Based upon the invariance of Hamilton action on time scales, under the infinitesimal transformations with respect to the time and generalized coordinates, the Hamilton’s principle, the Noether theorems and conservation quantities are given for the systems on time scales. Lastly, an example is given to show the application the conclusion.
On the integrability of the Hamiltonian systems with homogeneous polynomial potentials
Authors: Llibre Jaume , Zhang Xiang
Published: March 2019

We summarize the known results on the integrability of the complex Hamiltonian systems with two degrees of freedom defined by the Hamiltonian functions of the form

H
=

1
2

∑

i
=
1

2

p
i
2

+
V
(

q
1

,

q
2

)
,

$$\begin{array}{}
\displaystyle H=\frac{1}{2}\sum_{i=1}^{2}p_i^2+V(q_1,q_2),
\end{array} $$

where V(q
1,q
2) are homogeneous polynomial potentials of degree k.
Complex variables approach to the short-axis-mode rotation of a rigid body
Authors: Lara Martin
Published: March 2019

Decomposition of the free (triaxial) rigid body Hamiltonian into a “main problem” and a perturbation term provides an efficient integration scheme that avoids the use of elliptic functions and integrals. In the case of short-axis-mode rotation, it is shown that the use of complex variables converts the integration of the torque-free motion by perturbations into a simple exercise of polynomial algebra that can also accommodate the gravity-gradient perturbation when the rigid body rotation is close enough to the axis of maximum inertia.
Designing optimal trajectories for a skimmer ship to clean, recover and prevent the oil spilled on the sea from reaching the coast
Authors: Gomez Susana , Ivorra Benjamin , Ramos Angel M.
Published: March 2019

In this work, we use an Eulerian mathematical model to forecast the movement of oil spills in the open sea and we design objective functions to obtain optimal trajectories for skimmer ships to clean and recover the oil. Here, we first validate the ability of this mathematical model to forecast the fate of the oil by comparing our results with satellite images. Then, we create a synthetic study case based on real data, and we show that following optimal trajectories greatly improves the amount of oil recovered at the whole area of study.
Oscillatory flow of a Casson fluid in an elastic tube with variable cross section
Authors: Selvi C.K. , Srinivas A.N.S.
Published: March 2019

The aim of this paper was to study an oscillatory flow of a Casson fluid through an elastic tube of variable cross section. The radial displacement of tube wall is taken into consideration. The problem is modelled under the assumption that the variation of the cross section of the tube is slow in the axial direction. Cylindrical coordinate system is chosen to study the problem. The analytical expressions for axial velocity and mass flux as a function of pressure gradient are obtained. The change in pressure distribution for various pressure****radius relationships is analyzed by considering different geometries. The effects of elastic parameter, Womersley parameter and Casson parameter on excess pressure and pressure gradient along axial direction are discussed through graphs. The results reveal that the elastic parameter plays a key role in the variation of pressure along the tube. Womersley parameter has significant effect on pressure distribution. Another important observation is that the amplitude of pressure increases for growing values of Casson parameter for both tapered and constricted tubes. In addition, the pressure oscillates more for the case of locally constricted tube when compared to other geometries.
On a model for internal waves in rotating fluids
Authors: Durán A.
Published: March 2019

In this paper a rotating two-fluid model for the propagation of internal waves is introduced. The model can be derived from a rotating-fluid problem by including gravity effects or from a nonrotating one by adding rotational forces in the dispersion balance. The physical regime of validation is discussed and mathematical properties of the new system, concerning well-posedness, conservation laws and existence of solitary-wave solutions, are analyzed.
Note on recent common coupled fixed point results in multiplicative metric spaces
Authors: Huang Huaping , Deng Guantie , Došenović Tatjana , Hussain Nawab
Published: March 2019

The purpose of this paper is to improve and complement the main results of Jiang and Gu (J. Nonlinear Sci. Appl., 10 (2017), 1881–1895). By using nontrivial methods, some common coupled fixed point results in metric spaces are obtained. Moreover, it is shown that some recent fixed point results in the setting of multiplicative metric spaces are actually equivalent to the counterpart of the standard metric spaces. In addition, an example to illustrate the presented theoretical result is also given.