bluuebunny/crossref_metadata_2025 huggingface dataset:
Controlling the Extent of Oil Spill Using Modified Oil Digesting Microbes
Authors: Panwar Aashish
Published: October 2018

It's an era of new innovations that have been helpful in decreasing the complication while drilling, and transportation of crude oil the need for Cutting edge technologies is growing at a high pace.

The sole objective of the Paper is to make use of the modified microorganism (having altered DNA) to digest oil if accidentally Oil Spill occurs during transportation, in order to reduce Environmental Pollution.

The paper describes about the new approach that is based on combination of the DNA of Oliespira (Highly efficient deep sea oil digester that cannot work in saline conditions) and Neptumonas (Poor Oil Digester that can work in saline conditions). Using DNA Recombination Technique through which we can alter the DNA of the bacteria so that we can get single bacteria having both the desired characters (i.e. a bacteria containing both features of High efficiency and can work in saline water). These modified bacteria's can be exploited by making the use of asexual reproduction and unfavourable conditions for increasing the no. of bacteria and helping in the more effective digestion of oil during oil spill.

The modified bacteria developed will be having both the desired traits i.e. Digestion of Oil in sea water and deep sea levels will help in solving the problem of environmental pollution. The results would be mind boggling as a single microorganism would serve as the solution for various problems related to Oil Spill. The microorganism at normal or low temperature it will act as an Oil Digester which can work in sea water. With the use of these modified microorganisms we will be able to protect our environment and hence control extent of oil spill.

Exemplary management and proper working of these genetically modified bacteria's would be a boost for the industry. With the use of these modified microorganisms (bacteria's) we will be able to protect our environment and also avoid the harmful effects caused by the Oil Spills.
Aspects of Well Productivity Deterioration for Unconventional Wells
Authors: Linderman Daniel
Published: October 2018

Diagnostic plots of production decline of wells producing from unconventional reservoirs provide a particularly interesting field of study, given the fast-growing unconventional completion methods in the United States. In this paper, we present a method for analyzing fracture quality in horizontal wells with multiple stages of fracturing draining unconventional reservoirs. Our method, which explains a plausible cause for reduced production and rapid production decline, includes a log-log plot of the inverse production rate change vs. time. This diagnostic plot was used to analyze forty oil-producing wells drilled in the Bakken formation and ten gas wells producing from the Marcellus formation. From these graphs, we first observed that regardless of the number of fracturing stages, a plot of a system of fractures behaves as one equivalent fracture. Second, we noted that in some cases; a bilinear flow is observed, indicating strong support of the induced fractures by the formation. This is followed by a linear flow period. Furthermore, the duration of fracture linear flow indicates the quality of the induced fracture system in the formation. Crossflow among the induced fractures is noted. This can explain the deterioration of well productivity. A summary of these observations and the appropriate explanation behind this analysis method is presented. This diagnostic method used can help in monitoring causes of low production quality and low recovery factor from individual wells and in seeking solutions.
Modeling, Application, and Optimization of Engineered Water Injection Technology in Carbonate Reservoirs.
Authors: Adegbite Jamiu Oyekan
Published: October 2018

Engineered / low-salinity water injection (EWI/LSWI) technology is one of the latest and promising technology for improving recovery in both sandstone and carbonate reservoirs. In this paper, the mechanism, modeling, application, and optimization of EWI in carbonate reservoirs are discussed.

Firstly, an EWI model based on multi-ion exchange is proposed and validated through history-matching of coreflood data. This proposed model is later tested on field-scale by upscaling the coreflood model to three 5-spot reservoir models including homogeneous, heterogeneous with channeling, and heterogeneous with gravity underride. Afterwards, a sensitivity and optimization studies are conducted using the machine learning and artificial intelligence tools in CMG-CMOSTTM.

The results showed an improvement in both displacement and volumetric sweep efficiencies after engineered water injection, which was supported by mobility ratio and tracer method analyses. For the sensitivity study, oil price, tax rate, and initial oil saturation are among the most significant design parameters on EWI-NPV for the model investigated. More so, secondary EWI was recommended as opposed to tertiary injection due to the favorable recovery efficiency and profitability with respect to an NPV of $1.44 million and a payback period of about 2 years after the optimization study. This study gives more insight into understanding the EWI technology through which field-scale developments can be performed with more certainty and lower risk.
System Analysis of Liquid-Assisted Gas-Lift Unloading
Authors: P Coutinho Renato
Published: October 2018

This study describes the concept of Liquid-Assisted Gas-Lift (LAGL). This concept includes three main parts: two-phase downward flow in annulus, two-phase flow through orifice Gas-Lift Valves (GLVs), and upward two-phase flow in pipes. The latter part is well described in the literature and will not be investigated in this work. However, there is a lack of studies on two-phase downward flow in annulus and through GLVs. Therefore, these two topics are investigated in this work.

An experimental and numerical study on two-phase flow through orifice GLVs is presented. The experimental results are compared to predictions using a numerical model published in the literature for two-phase flow through restrictions. It is observed that the mechanistic model could successfully characterize two-phase flow thorough gas-lift valves with errors lower than 10%. A flow regime map of downward two-phase flow in the annulus is used to analyze the flow regimes observed during field-scale experiments of LAGL unloading. It was concluded that the intermittent and bubbly flow are preferred to minimize injection pressure during LAGL unloading operations.

A commercial flow simulator is used to perform sensitivity analysis of the LAGL system and to perform unloading of a well using the LAGL concept. The unloading simulation results indicated that the use of LAGL has the potential to decrease the injection pressure requirement in more than 50% when compared to the conventional single-point gas injection. The simulation model is shown to be a useful tool to perform system analysis and optimization of LAGL.
Confinement Affects Phase Behavior of Petroleum Fluids in Shale Reservoirs
Authors: Luo Sheng
Published: October 2018

Different from the conventional reservoirs, the liquid-rich shale reservoirs are known to possess a broad pore size distribution. In macropores and fractures, the porous geometries are in the size of micrometers. However, in organic matter, a significant amount of porosity consists of nanopores. In the nanopores, the fluid phase behavior deviates from the bulk-scale phase behavior due to the nano-confinement effect. The deviated phase behavior results in significant challenges in evaluating oil and gas in-place and understanding reservoir fluid depletion mechanism.

In this paper, the nano-confinement effect on hydrocarbon phase behavior in shale reservoirs is studied in three steps. Firstly, the bubble point temperatures of hydrocarbons in multiple sizes of nanopores are measured using the laboratory approach of differential scanning calorimetry (DSC). Secondly, a pore-size-dependent equation of state (PR-C EOS) extended from Peng-Robinson equation of state is completed with the experimental data. The PR-C EOS models the phase diagram with an extra dimension of pore size and the modeling results agree well with the experimental data. Thirdly, a multi-scale PVT simulator is developed to calculate the PVT of reservoir fluids in the shale pore size distribution systems. The whole pore size distribution is discretized into specific sizes of pores and PR-C EOS is used to describe the fluid per pore. The simulated multi-scale PVT provides a realistic picture of fluid phase behavior in liquid-rich shale reservoirs with macro-to nano-scale porous geometries and sheds light upon GOR behavior during production history.
Application of Machine Learning for Closure Pressure Determination
Authors: Nande Soumitra
Published: October 2018

Hydraulic fracturing is a method in which fluid is pumped at elevated pressures to break down the formation, and create a conductive pathway for production of hydrocarbon fluids. Understanding the stress environment of the rock is critical for a better design and successful execution of a fracturing treatment. More often than not, a formation breakdown pressure is equal to or in close approximation of minimum horizontal or in-situ stress, also termed as closure pressure.

Various analytical methods such as G-Function plot, G-dP/dG plot, square-root of time plot etc. are used for the determination of closure pressure, and have been implemented since the inception of hydraulic fracturing as a way to better design fracture treatments. These methods are prone to have subjectivity due to the experience and knowledge of the person analyzing the data, which calls for a need to more objectively analyze such data, in order to better predict the closure pressure.

Machine learning is a method to teach computers to implement a predesigned algorithm and execute tasks without having to explicitly program them. It helps create significantly complex mathematical models which automate processes based on critical learning parameters, and predict within a certain acceptable degree of accuracy.

In this paper, Artificial Neural Networks (ANN), a machine learning methodology, has been applied in order to minimize the subjectivity in predicting the value of closure pressure. Artificial neural networks, similar to neural networks of the brain, are a system comprising of various neurons. These neurons are organized in layers namely input layer (consisting of input neurons), output layer (consisting of output neurons or results) and multiple hidden layers. The number of input, hidden and output neurons depend on the parameters affecting the end-result. An ANN has been designed, taking into consideration critical parameters on which closure pressure depends. The model identifies and learns from the patterns in the data and predicts the required output. This output is then compared with the actual results in order minimize the error. The objective is to minimize the error so as to get a close match for the given data. In this paper we have kept the ratio of learning to testing at 80:20, which means that of all the available data, 80% is used for training the model and the rest 20% is used for testing the model.

Results from this work point to the fact that the ANN was able to predict the closure pressure with reasonable accuracy.
Development of Models for Filtration Simulation in Nonlinear Media
Authors: Nevmerzhitskiy Yan
Published: October 2018

The paper contains numerical simulation of nonisothermal nonlinear filtration in a porous medium. Two-dimensional unsteady problem of heavy oil, water and steam flow is considered. Oil phase consists of two pseu-docomponents: light and heavy fractions, which can vaporize like the water component. Oil exhibits viscoplastic rheology, its filtration does not obey Darcy's classical linear law. Simulation considers not only the dependence of fluids density and viscosity on temperature, but also improvement of oil rheological properties with temperature increasing.

To solve this problem numerically, we use the streamline method with splitting by physical processes, which consists in separating the convective heat transfer directed along filtration from thermal conductivity and gravitation. The article proposes a new approach to streamline method application, which allows to correctly simulate nonlinear filtration problems with temperature-dependent rheology. The core of this algorithm is to consider the integration process as a set of quasi-equilibrium states that are results of solving system on a global grid. Between these states the system is solved on a streamline grid. Usage of the streamline method allows not only to accelerate calculations, but also to obtain a physically reliable solution as integration takes place on a grid that coincides with the fluid flow direction.

In addition to the streamline method, the paper presents an algorithm for non-smooth coefficients accounting, which arise during simulation of viscoplastic oil flow. Applying this algorithm allows keeping sufficiently large time steps and does not change the physical structure of the solution.

Obtained results are compared with known analytical solutions, as well as with the results of commercial package simulation. The analysis of convergence tests on the number of streamlines, as well as on different streamline grids, justifies the applicability of the proposed algorithm. In addition, the reduction of calculation time in comparison with traditional methods demonstrates practical significance of the approach.
Multi-algorithmic Palmprint Authentication System Based on Score Level Fusion
Authors: Murukesh C. , Elango G. Arul
Published: October 2018

Fusion of multiple algorithms utilizes as much information as possible from each algorithm for enhancing the performance of the biometric authentication system. It is a big challenge to formulate a single algorithm for any biometric authentication system to addresses the problem of illumination, orientations and pose variations. The palmprint features are extracted using two feature extraction algorithms namely contourlet transform with principal component analysis and dual-tree complex wavelet transform. The match scores obtained from matching modules were normalized using z-score and fused with different score level fusion schemes namely sum-rule,weighted sum-rule, and Support Vector Machine (SVM) fusion, respectively. The experimental results show that SVM score level fusion lead to an increased performance for the proposed multi-algorithmic palmprint authentication system with genuine acceptance rate of 98% for 0.1% false acceptance rate, and equal error rate of 1.5% compared to weighted sum-rule and sum-rule fusion schemes.
Epidemiology of Chronic Myeloid Leukemia in the Republic of Bashkortostan
Authors: Ryabchikova N.R. , Safuanova Guzyal' Shagbanovna , Nikulicheva V.I.
Published: October 2018

Background. The planning of therapeutic, diagnostic, and preventive medical care for chronic myeloid leukemia (CML) patients implies the need of not only maintaining patient registries, but also conducting epidemiologic studies in each geographical area. Aim. To study and analyze CML epidemiological indicators over the last 15 years in the Republic of Bashkortostan for the purposes of evaluation and rational planning of specialized medical care for CML patient population. Materials & Methods. The incidence, prevalence, and mortality of CML patients of all age groups in the period of 2000-2016 was analyzed in the Republic of Bashkortostan. Results. The analysis of epidemiological indicators over the period of 2000-2016 showed that the incidence of the disease in the Republic of Bashkortostan was increasing. Within the last 8 years the prevalence rate even quadrupled which is clearly connected with improved detectability of Ph-chromosome and/or BCR-ABL gene, creation and maintenance of CML patient registry since 2008, introduction of treatment using tyrosine kinase inhibitors resulting also in increase in life expectancy. Mortality rates are reported to have a tendency of decrease over the period under study. Conclusion. Key epidemiological indicators of CML in the Republic of Bashkortostan are comparable with the data of international and Russian researchers. The results obtained can be used for comparative studies and improvement of specialized medical care for CML patients.
Magnetic Resonance Imaging of Bone Marrow and its Results as a Criterion for Administration of Maintenance Therapy After Auto-HSCT in Multiple Myeloma Patients
Authors: Solov'ev Maksim Valer'evich , Mendeleeva L.P. , Yatsyk G.A. , Lutsik N.S. , Firsova M.V. , Gemdzhian E.G. , Savchenko V.G.
Published: October 2018

Aim. To evaluate the efficacy of maintenance therapy in multiple myeloma (MM) patients after autologous hematopoietic stem cell transplantation (auto-HSCT) based on the results of MRI of bone marrow. Materials & Methods. The study included 32 MM patients aged 36 to 66 years (median 57 years) with complete remission after a single auto-HSCT. MRI of spine and pelvic bones was performed to identify the nature of bone marrow lesions and to determine the volume of tumor tissue on the day 100 after auto-HSCT. As maintenance therapy after auto-HSCT 14 patients received daily 15 mg lenalidomide in the period from day 1 to day 21 of the 28-day treatment course within 1 year. Monitoring of 18 patients was conducted without maintenance therapy. Statistical analysis included the assessment of progression-free survival (PFS) and relapse risk relationship to clinical and laboratory parameters. Results. Twenty patients had a positive MRI (tumor volume > 1 cm3). Zero variation of MR signal in bone marrow and detection of a < 1 cm3 tumor were regarded as a negative MRI, which was the case in 12 patients. After reaching the negative MRI the best rates of 2-year PFS were registered: 100 % with maintenance therapy and 84 % without maintenance therapy. In patients with tumor load on MR scans the 2-year PFS significantly (p = 0.03) varied and accounted for 80 % in patients who received maintenance therapy vs. 33 % in patients without maintenance therapy. Administration of maintenance therapy after detecting residual tumor on MR scans on day 100 after auto-HSCT has a positive effect on PFS rates. Multivariate analysis confirmed the residual tumor on MR scans of bone marrow to be the most important parameter PFS depends on. Conclusion. A negative MRI after auto-HSCT is a favourable prognostic factor determining a long-lasting (> 2 years) MM free period, despite the lack of maintenance therapy.
Can the Volume Ratio of Coarse to Fine Particles Explain the Hydraulic Properties of Sandy Soil?
Authors: Nielsen Jesper E. , Karup Dan , de Jonge Lis W. , Ahm Malte , Bentzen Thomas R. , Rasmussen Michael R. , Moldrup Per
Published: October 2018

Core Ideas

The volume ratio of large to small particles controls intact sand hydraulic properties.

Simple model explained sand saturated hydraulic conductivity within a factor of two.

The new concept was also related to effective porosity and water retention points.

Soil mineral particles larger than 0.1 mm and organic matter need to be considered.

The volume ratio concepts seem promising for developing pedotransfer functions.

Hydraulic conductivity (Ks) and effective porosity (ϕeff) for saturated water flow are essential hydraulic properties for describing fluid and chemical transport in soil and groundwater systems. Typically, Ks is predicted by pedotransfer functions of soil texture and total porosity or ϕeff. This study shows that a more conceptual approach that uses a volume‐weighted ratio of coarser (part of the sand fraction) to finer (clay and organic matter) particles alongside total porosity could explain variations in both Ks and φeff in intact 100‐cm3 samples of 20 sandy surface and subsurface soils with <10% fines (clay + organic matter). The Ks function used was a simple power‐law function of the volume‐weighted coarse/fine particle ratio with two calibration parameters [A and pore network connectivity (PNC)]. The value of the power‐law exponent (PNC) in the calibrated function was 1.8, similar to power‐law exponents for gas diffusivity and air permeability in unsaturated soil (1.5–2). The second calibration parameter (A) probably depends on the soil classes under consideration, the Ks measurement method, and the sample scale. A sensitivity analyses showed that both Ks and ϕeff (taken as the volume content of pores larger than 30 μm, that is, drained at –10 kPa of soil water matric potential) are especially sensitive to organic matter content. Besides the water transport parameters, water retention under dry conditions was also closely correlated with the volume‐weighted fines content. Therefore, the volume ratio concept seems to be a promising platform for the development of simple, accurate functions for the hydraulic properties of coarse‐textured soils.
Evaluation of Postoperative Analgesic Consumption After Emergency and Elective Cesarean Section
Authors: Tapar Hakan , Karaman Serkan , Dogru Serkan , Karaman Tugba , Dogru Hatice Yilmaz
Published: October 2018

OBJECTIVE: This study compares post-operative pain and analgesic consumption among patients who have undergone either an emergent or elective caesarean section.STUDY DESIGN: A total of 115 patients, comprised of 48 emergency caesarean section and 67 elective caesarean section patients, were enrolled in this prospective study. Pain intensity was evaluated with a numeric pain scale in the 1st, 2nd, 6th, 12th and 24th post-operative hours and total post-operative tramadol consumption within 24 hours was recorded for each patient.RESULTS: Total tramadol consumption for emergency caesarean section patients under general anesthesia was 222.91±56.52 mg and for elective caesarean section patients under general anesthesia was 181.71±55.38 mg (p<0.05). In patients under spinal anesthesia, total tramadol consumption was found to be 169.58±59.52 mg and 160.62±70.47 mg in emergency and elective cases respectively (p>0.05).CONCLUSION: Analgesic consumption for emergency caesarean section patients under general anesthesia was observed to be high.
Hydrogeological and hydrogeochemical characterization of the unconfined aquifer in the fluvio-eolian plain of Cordoba (Argentina)
Authors: Becher Quinodoz F. , Maldonado L. , Blarasin M. , Lutri V. , Cabrera A. , Giuliano Albo M. J. , Matteoda E.
Published: October 2018

The studied area, a vast plain located in the South of Córdoba (Argentina), presents a relief resulting from the juxtaposition of an eolian and a fluvial system. The objective of this work was to characterize the unconfined aquifer from a dynamic and a geochemical point of view, establishing relationships with lithological and geomorphological features and validating with statistical multivariate analysis (Q mode) of the geochemical data. The unconfined aquifer presents variable hydraulic gradients and groundwater velocity, both conditioned by the local relief and lithology. The aquifer showed a varied spatial geochemical pattern with fresh to salty water (0.4–10.0 g/L) and sodium bicarbonate to sodium chloride geochemical types, in some places of mixed anionic type. The statistical analysis showed two groups: Group 1 links salty-brackish groundwater of sulfate and chloride type with longitudinal dunes and lowlands with locally outcropping water. It represents evolved groundwater coming from intermediate and regional flows. Group 2 links fresh groundwater of bicarbonate type with active dunes and paleochannels. In these sites, where coarser sediments prevail, local groundwater flow cells develop as a result of recent recharge, leading to greater groundwater velocity and decreasing the transference of ions to solution. These results allow us to identify the most promising areas for freshwater abstraction.
Social marketing approach to bring change in water use behaviour of rural people of Punjab, India
Authors: Sharma Preeti , Kaur Lakhwinder , Mittal Ritu , Kaur Samanpreet , Kaur Sukhjeet
Published: October 2018

The world today is the victim of climate change; rising temperatures, erratic rainfall and extreme weather events leading to overexploitation of groundwater for various purposes at agricultural and household level. The present study is an action research applying a seven-step approach of social marketing to bring change in water use behaviour of rural people of Punjab, India. Findings revealed that the overall level of awareness of the majority of the respondents regarding climate change was found to be medium. They also suggested that awareness of effects of climate change on water resources and factors responsible for water depletion should be created among farming families to make them water saving conscious. Thus, an awareness campaign consisting of rallies and street plays was conducted. Knowledge regarding water saving technologies was imparted through skill training. Adoption of small water saving devices on a trial basis was facilitated by distributing water literacy kits. Post-knowledge test data revealed that the knowledge of 68.0% farmers and 61.33% of farm women increased to a high level after intervention. All the respondents adopted distributed technologies on a trial basis. The social marketing approach proved to bring about change in the water use behaviour of rural people and impacted their knowledge and adoption level.
Pemanfaatan Data Landsat Multitemporal Untuk Pemetaan Pola Ekspansi Perkotaan Secara Spasiotemporal (Studi Kasus Pada Tiga Perkotaan Metropolitan Di Pulau Jawa)
Authors: Indrawati Like , Cahyono Ari
Published: October 2018

Utilization of multitemporal remote sensing data among others can be used todetermine thepattern of changes in urban expansion. One of the most important types of cities in urban systems isthe metropolitan urban area that covers several districts and cities. This is because the regiongenerally acts as the capital of the country, the provincial capital, and the center of economicactivities that are national or strategic. Understanding urban expansion at different metropolitanurban levels is important for expanding knowledge in times of urban growth and its impact on theenvironment. Aims in this study are: (1) utilization of multitemporal Landsat data for mapping urbanexpansion patterns, (2) knowing the effectiveness of object-based classification for mapping of urbansettlements and (3) spatiotemporal urban expansion pattern analysis in three metropolitan cities onJava Island.. In this study focused on three metropolitan urban in Java, namely DKI. Jakarta,Surabaya and Semarang. This study utilizing Landsat TM, ETM + and OLI image data to map urbansettlement land cover using object-based classification with Random Forest algorithm. Next,quantifying the typology of urban expansion and compare the spatiotemporal pattern of urbanexpansion during 2005-2015 on the results of land cover mapping. This research has found that (1)object-based classification with Random Forest algorithm is quite effective in terms of time of work tomap urban settlement cover on Landsat digital data having medium spatial resolution; (2) the threeurban metropolia is experiencing rapid and massive development and has a very variedspatiotemporal pattern; (3) Size of the city affect the pattern of urban expansion, followed by rapidexpansion of the region. Larger city size with relatively rapid expansion is more likely to experiencethe edge extension model, while smaller cities tend to develop with outlying models.
Rancang Bangun Sistem Produksi dan Persediaan UMKM
Authors: Hapsari Rinci Kembang , Azinar Azmuri Wahyu , Sugiyanto Sugiyanto
Published: October 2018

The large contribution of MSMEs is as a driver of the nation's economy which is proven to be resistant to various shocks to the economic crisis. In operational records, MSMEs still use manual systems and there are even those that are not recorded properly. Even in the production process that functions to determine the cost of production and production control also still using manual methods. So that a computerized system is needed in the production process that can automatically calculate the cost of production, control the production and inventory stock. Based on testing and analysis, it can be proven that the applications built are very helpful to MSMEs, especially in the production process because data processing can be done quickly and accurately. With the computerized application system produced, it can monitor production results and control stock items.So that it can minimize the accumulation of goods stock production and the occurrence of empty stock for a long time. With this application system can also help MSMEs in determining the cost of production automatically.
Rancang Bangun Quadrotor Dengan Kendali Robust Pid Untuk Pemetaan Sawah Pra Panen
Authors: Firmansyah Rendra Dwi , Sumanto Budi , Mareta Rella
Published: October 2018

Field mapping is important to know the potential of agricultural productivity in a region.Furthermore, field mapping can also be used to predict crops in a region. The mapping can be donethrough aerial photographs. Aerial photographs can be performed using manned aerial vehicle aswell as unmanned aerial vehicle. Currently, many aerial photographs are taken using unmannedaerial vehicle because the cost is much more affordable than using a manned aerial vehicle. One typeof unmanned aircraft used for aerial photographs is quadcopter. However taking aerial photographsusing a quadcopter often produces blurry images due to its instability. Instability of the quadcopter iscaused by several factors including sensor readings such as IMU, GPS, compass, and barometer,disturbance factors such as angina, and control systems that are less robust to quadcopter characters.To get a stable quadcopter, a control system that matches the quadcopter character and has aresistance to interference is needed. One of the control systems that can be applied to the quadcopteris the Robust PID control system. Reliability of the control system can be seen using ITAE (IntegralTime Absolute Error). The smaller the value of ITAE the better the control system. Some tuningmethods are done to get the Robust PID control system. The method used in this research is ZieglerNicols, fine tuned PID controller, and ITAE tuning method. The result of PID constant tuning is thenimplemented to quadcopter. In this study the response data was obtained by using IMU sensor. Theresult shows that of the three tuning methods implemented in the quadcopter, the Fine tuning methodgives better results than the others.
Sistem Ground Control Station Berbasis Mobile Untuk Pengamatan Dan Pengendalian Uav
Authors: Handayani Ariesta Martiningtyas , Rifa’i Isnan Nur
Published: October 2018

UAV ini memiliki banyak kelebihan diantaranya, pesawat ini dapat digunakan untuk menjalankanmisi yang berbahaya ataupun misi rahasia. Salah satu misi UAV yang paling sering digunakan adalahpemantauan kondisi di suatu tempat. Pemantau kondisi lingkungan dari udara dengan menggunakanUnmanned Aerial Vehicle(UAV) yang dilengkapi dengan kamera diperlukan suatu perangkat lunakyang mampu mengirimkan data ke Ground Control Station(GCS). GCS juga dapat digunakan untukmengirimkan perintah. Dalam penelitian ini perintah yang dikirim adalah perintah autopilot. Perintahautopilot ini sangat penting dalam misi pemantauan. Perintah ini digunakan untuk mengarahkan UAVke suatu posisi yang ingin dipantau. Data perintah yang dikirim berupa titik koordinat garis bujur danlintang tujuan. Untuk mengaktifkan autopilot tersebut diperlukan suatu sistem pengiriman perintahdari GCS. Sehingga setelah data diterima oleh UAV, maka UAV mampu memroses data yangdiperlukan dan menjalankan perintah autopilot berdasarkan data perintah yang telah dikirim dalam halini khususnya quadcopter. Beberapa tahun terakhir, para software developers mengalihkan perhatiankepada pembuatan aplikasi mobile, salah satunya adalah android. Perangkat mobile lebih mudahdibawa untuk perjalanan. Penelitian ini akan mengembangkan GCS seperti pada berbasis PCberdasarkan pada platform android, dan dikombinasikan dengan perangkat layar sentuh android.Penelitian ini akan diujicobakan menggunakan fasilitas laboratorium Elektronika dan InstrumentasiVokasi UGM.
Monitoring Tegangan, Arus, Dan Daya Secara Real Time untuk Perbaikan Faktor Daya Secara Otomatispada Jaringan Listrik Satu Fase Berbasis Arduino
Authors: Isnianto Hidayat Nur , Puspitaningrum Esti
Published: October 2018

Electrical appliances in industrial and residential are now much inductive, consequently causing thepower factor value less than 1 (one), so the power capacity installed to the customer is not optimal.Power factor improvements are needed to improve the efficiency of active power usage so that it canbe maximized. To overcome this, a device is made to automatically improve the power factor due toinductive load changes, ie by installing capacitors in parallel to the source automatically using anArduino-controlled switch when the power factor value is less than 0.85. The test results show that thispower factor repair system is working automatically, real time and recorded on microSD. The powerfactor value can be up to 0.92 with 4.5 μF to 18 μF capacitors at inductive loads of 40 W to 225 Wwith error at 7.06% current sensor, 0.50% sensor, cos phi sensor 4.20%. All measurements aredisplayed on the LCD and recorder on SDCard.
The Effect of Volatility Expectations on Large Stock Price Changes
Authors: Kudryavtsev Andrey
Published: October 2018

My study explores the effect of future volatility expectations, embedded in VIX index, on large daily stock price changes and on subsequent stock returns. Following both psychological and financial literature claiming that good (bad) mood may cause people to perceive positive (negative) future outcomes as more probable and that the changes in the value of VIX may be negatively correlated with contemporaneous investors’ mood, I hypothesize that if a major positive (negative) stock price move takes place on a day when the value of VIX falls (rises), then its magnitude may be amplified by positive (negative) investors’ mood, creating price overreaction to the initial company-specific shock, which may result in subsequent price reversal. In line with my hypothesis, I document that both positive and negative large price moves accompanied by the opposite-sign contemporaneous changes in VIX are followed by significant reversals on the next two trading days and over five- and twenty-day intervals following the event, the magnitude of the reversals increasing over longer post-event windows, while large stock price changes taking place on the days when the value of VIX moves in the same direction are followed by non-significant price drifts. The results remain robust after accounting for additional company (size, beta, historical volatility) and event-specific (stock’s return and trading volume on the event day) factors, and are stronger for small and volatile stocks.
Kosovo’s European Road and the EU Role in Improving Relations with Serbia
Authors: Goxha Jeta
Published: October 2018

Compared to other Western Balkan countries, the Kosovo case is of particular importance, on the one hand, by the fact that it is the youngest state in the region and, on the other hand, the integration of Western Balkan countries could not be sustained without resolution of Kosovo’s status.

This paper aims to analyze the progress made in the relations between the two countries. The normalization of relations between Kosovo and Serbia is an important factor in regional co-operation, as well as an important condition for stabilizing the Balkans.

To make possible the realization of this objective Kosovo has undertaken a number of initiatives, which could facilitate the process of European integration. National Strategy for European Integration aims at supporting Kosovo’s aspirations for membership and EU integration, so that by 2020 Kosovo may have “completed its homework” for EU integration.
Following the declaration of independence, Kosovo’s main objective is Euro-Atlantic integration. Mainly, the journey towards the EU has been influenced by a number of factors, such as the overall situation, the political situation in the country, and the close relationship between Kosovo and Serbia. Following the signing on 19 April 2013 of the historic agreement by Prime Minister Hashim Thaci on the Kosovo side and Ivica Dacic on the Serbian side, the situation between the two countries apparently “improved”. But what is different is the fact that this agreement was implemented thanks to the influence of EU representatives after a series of failed attempts.
Non Implementation of the Greater Jos Urban Master Plan: Options and Strategies
Authors: Wapwera Samuel Danjuma
Published: October 2018

This paper seeks to review the non-implementation of the Greater Jos Urban Master plan, considering some options and strategies. It was carried out by examining the current master planning approach and master planning-cum-spatial planning. The research strategy used is “mixed method” with a deductive-inductive reasoning. Multiple sampling methods were adopted; the snowball to get 30 Town planners working in the 9 case studies (planning authorities) to be engaged in the face-to-face interview, Purposive and Convenience sampling methods were employed to select over 90 documents on planning authorities and implementation of master plan in Jos, metropolis, Nigeria. The instruments employed were face-to-face interviews and review of archived documents on the implementation of master plans and other options. The data obtained through the face-to-face interviews and the 90 archive documents were analysed using the thematic and content analyses. The results obtained revealed that the implementation of the proposed greater Jos Urban master plan was affected by unproved legislations, the plethora of planning authorities covering the planning region and inadequate funding as well as its phasing. Hence the consideration of the strategies to employ for the implementation of plans which concluded with the recommendations to help practitioners (Town Planners), policy makers (Legislators in the area of planning) and the academia.
La eco-geo-política del agua: una propuesta desde los territorios en las luchas por la recuperación del agua en la provincia de Petorca (Zona central de Chile)
Authors: Bolados García Paola , Henríquez Olguín Fabiola , Ceruti Mahn Cristian , Sánchez Cuevas Alejandra
Published: October 2018

Desde los aportes de la ecología política latinoamericana y de la geografía crítica, relevamos las eco-geo-políticas del agua desde los territorios que surgen de las prácticas y los discursos del Movimiento por la Defensa del Agua, la Tierra y el Medio Ambiente y sus luchas por la recuperación del agua. A partir de un trabajo etnográfico basado en entrevistas a pequeños agricultores y el análisis de los derechos de aguas entregados por el estado, mostramos el conflicto por el agua de la provincia de Petorca como un conflicto eminentemente por la tierra, el cual se radicalizó a partir del Código de Aguas impuesto por la dictadura militar en 1981 y se profundizó con la expansión de las fronteras extractivistas agroexportadoras desde el retorno a la democracia en los años 90.
Reseña de libro: El populismo en escena ¿Por qué emerge en unos países y en otros no? de César Ulloa
Authors: Díaz González José Andrés
Published: October 2018

El populismo en América Latina no es un fenómeno nuevo, y tampoco es exclusivo de estas latitudes. Sin embargo, la región parece funcionar como un “laboratorio” político para estudiar el tema del surgimiento, consolidación y caída de gobiernos populistas. Dado esto, es posible realizar un análisis político comparado que permita identificar las características que facilitan que el populismo surja en algunos países latinoamericanos, mientras que en otros parecen estar exentos de este fenómeno. Este es el punto de partida de César Ulloa en su libro en su libro El populismo en escena ¿Por qué emerge en unos países y en otros no?, en el cual realiza un análisis comparado de dos países con una fuerte tradición populista en su escenario político, Venezuela y Ecuador, y los contrasta con Uruguay, un país donde no ha surgido el populismo hasta el momento.
Condiciones y características del surgimiento y desarrollo de la organización Tupac Amaru en Argentina
Authors: Gaona Melina
Published: October 2018

El artículo es un análisis sociocultural de la organización Tupac Amaru, en el noroeste argentino, que busca: 1) reconstruir las condiciones materiales que permitieron el surgimiento de un movimiento multitudinario de características populistas; y 2) interpretar distintas dimensiones de las demandas y la estructuración de lazos sociales al interior del movimiento social. Esta caracterización pretende echar luz sobre parte de los factores que dieron curso tanto a su explosión multitudinaria y productiva como a su posterior estigmatización y condena. Se propone considerar a la organización como una catalizadora de conflictos históricos regionales, e indagar de manera crítica las distintas demandas a partir de un análisis desde la interseccionalidad identitaria de sus militantes. La investigación está basada en un acercamiento etnográfico multisituado.
Hemolytic uremic syndrome complicating whooping cough
Authors: Stojanovic Vesna , Barisic Nenad , Doronjski Aleksandra , Csuka Dorottya , Prohászka Zoltán
Published: October 2018

Introduction. We shall present a case of a two-month old infant who has developed a haemolytic uremic syndrome as an atypical complication of Bordetella pertussis infection. The observation that the development of haemolytic uremic syndrome is a late complication of Bordetella pertussis infection may be a clue for further studies. Case outline. A two-month-old female infant was admitted to the hospital because of fever, intensive cough, shortness of breath and poor feeding. Real-time polymerase chain reaction (PCR) for Bordetella pertussis was positive. A macrolide was introduced in therapy. On the eighth hospital day, the infant?s condition improved, she became afebrile and eupneic. On the 16th hospital day, she developed signs of progressive respiratory distress and oliguric acute kidney injury. Hemolytic uremic syndrome (HUS) was diagnosed, so the therapy with the fresh frozen plasma (FFP) transfusion, therapeutic plasma exchange and peritoneal dialysis was initiated. Levels of ADAMTS13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13) were decreased, while the levels of factor H, factor B, and factor I were normal. Despite the full supportive and targeted care, severe multiple organ failure had developed and on the 24th hospital day the infant died. Conclusion. Further studies are necessary to identify the mechanism of potential interaction between pertussis toxins, pathophysiology of the infection and the interaction of complement activation, coagulation and the regulation of these cascades.
Synchronous adenocarcinoma and gastrointestinal stromal tumor in the stomach - report of two cases
Authors: Stojanovic Dragos , Mitrovic Nebojsa , Stevanovic Dejan , Jasarovic Damir , Bokun-Vukasinovic Zorana , Nikolic Marija
Published: October 2018

Introduction. Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor that occurs in the gastrointestinal tract, most commonly in the stomach or the small intestine. The surgery of the stomach is the dominant way of treatment of these tumors. The synchronous detection of adenocarcinoma and gastric GIST is not a very common condition, which is often diagnosed intraoperatively and has a significant impact on the prognosis of these patients. Outline of cases. We herein report two cases of gastric GIST with synchronous adenocarcinoma tumors, which were detected incidentally, intraoperatively, while the patients were undergoing surgery for a primary gastric adenocarcinoma. The first case was of a 76-year-old female patient. The histopathological analysis of the operative specimen firstly showed a poorly differentiated advanced gastric adenocarcinoma. The second tumor, from the gastric serosa, was a spindle cell GIST of low risk. It was diffusely positive for DOG1, CD34, and CD117. Its proliferative index was established using the Ki67 antibody. The number of mitoses was one per 5 mm2. The second case was of a 65-year-old male patient. The histopathological analysis revealed an early, well-differentiated, intestinal type adenocarcinoma of the gastric mucosa. The synchronous tumor from the serosa of the stomach was a spindle cell gastrointestinal stromal tumor (CD34, DOG1, and CD117 diffusely positive) of low risk. The proliferative index of this tumor, labeled with the Ki67 antibody, was very low. Necrosis was not present, nor was mitosis. Conclusion. Synchronous adenocarcinomas and GIST of the stomach are not very commonly associated, and are usually detected intraoperatively and after an immunohistochemical analysis. Recognition of this condition has a very important role in a differential diagnosis and the exclusion of metastases of malignant tumor deposits. Based on the tumor severity, the radicalness of the surgical intervention is determined, which affects the outcome of these patients.
Från källtext till elevtext – Spår av lästa ämnestexter i elevtexter i en årskurs 5-klass
Authors: Hallesson Yvonne , Visén Pia
Published: October 2018

I artikeln analyseras 37 elevtexter i ämnet samhällskunskap skrivna av 19 svenska elever i årskurs 5 i det sista steget i ett undervisningsupplägg enligt läspedagogiken Reading to Learn. Syftet är att synliggöra hur innehåll och textuella mönster från två lästa källtexter speglas i elevtexterna, samt diskutera vad det kan säga om elevers insocialisering i en ämneslitteracitet. Resultaten visade att alla elevtexter hämtar den övergripande strukturen och huvudsakliga genrestrukturen från källtexterna, liksom vissa språkliga aspekter. Däremot visar elevtexterna på variation när det gäller hur källtexternas innehåll hanterades och graden av självständighet gentemot det. I det avseendet kunde tre grupper av elevtexter urskiljas, vilka kan sägas visa olika steg av insocialisering i ämneslitteraciteten. Resultaten pekar på att undervisningsupplägget kan stödja elever att ta ett eller flera steg in i en ämneslitteracitet, men att den styrda strukturen samtidigt kan begränsa elevers egna reflektioner och kreativitet, beroende på hur uppgiften formulerats.
English abstract
From Source Text to Pupil Text – Traces of Topical Texts in Student Texts in a 5th Grade Level Class
In the article 37 student-texts written by 19 students in year five in Swedish middle school in the subject of civics are analysed. The texts are written as the last step in a teaching cycle inspired by the reading pedagogy Reading to Learn (R2L). The aim of the study is to reveal how content and textual patterns from two subject texts the students have read are reflected and adapted in the student-texts, as well as to discuss what those results can say about the students’ learning and socialisation into disciplinary literacy. The results showed that all student-texts retrieve general textual structure as well as main genre structure from the read texts, as well as some linguistic features, but that the student-texts differed as to how students handled the contents from the source text. Three groups of texts could be distinguished which can be regarded as three steps of socialisation into disciplinary literacy. The results indicate that the teaching cycle within the R2L pedagogy can support students to take one or more steps into disciplinary literacy. However, at the same time the strictly held structure might limit students’ own reflections and creativity, depending on how the task is formulated.