bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermal Conductivity of an AZ31 Sheet After Accumulative Roll Bonding
Authors: Trojanová Zuzanka , Halmešová Kristýna , Drozd Zdeněk , Šíma Vladimír , Lukáč Pavel , Džugan Ján , Minárik Peter
Published: May 2018

Accumulative roll bonding (ARB) is one of methods of severe plastic deformation which is relevant for industrial production of sheets. While mechanical properties of several magnesium alloys subjected to ARB process have been studied, the physical properties have been reported only for some magnesium alloys. These properties are influenced by the texture developed during the ARB process and the temperature load. In the presented contribution, we studied thermal diffusivity and thermal conductivity of an AZ31 magnesium alloy after 1 and 2 passes through the rolling mill. Thermal diffusivity was measured with the laser-flash method in the temperature range between 20 and 350 °C. Thermal conductivity depends on the number of rolling passes. The microstructure and texture of sheets are significant factors influencing the thermal properties.
One Universe, Many Spaces: A Non-Local, Relativistic Quantum Spacetime
Authors: Sharp Jonathan C.
Published: May 2018

The nonlocality of entangled quantum mechanical systems is incompatible with the standard interpretation of special relativity as a single 4D Minkowskian metric spacetime. The difficulty is that the definition of a spacetime interval between any pair of events precludes any form of nonlocal interaction, even the relatively benign non-signaling correlations. By an application of the relativity principle, and the use of the space ←→ time symmetry of the Lorentz boost I propose here a reinterpretation of special relativistic spacetime. This new ontology consists of a set of coexisting 3+1D spaces (‘framespaces’), each containing unique content in the form of a complex density. These spaces are related by the Lorentz boost, and coupled pairwise in a manner dictated by the Lorentz transformation. The inter-space coupling acting on the spacetime content gives rise to a nonlocal wave phenomenon, which is identified as quantum wave mechanics. The interspace coupling strength is then inversely proportional to Planck’s constant. The coexistence of multiple spaces is interpreted as momentum superposition, implying that momentum is the fundamental physical basis of quantum superposition. This new spacetime interpretation of quantum mechanics has many consequences, including explanations of quantum non-locality, the spacetime role of Planck’s constant, quantum measurement as a symmetry-breaking process and the redundancy of description of gauge theory.
Climate Change Impacts Assessment in Coastal Lagoons Using Available Modelling Tools
Authors: Primo Bruno , Achete Fernanda , Mahanama Sarith , Thatcher Marcus , Hemer Mark , Weesakui Sutat , Duong Trang
Published: May 2018

Climate change such as sea level rise, change in temperature, precipitation, and storminess are expected to impact significantly coastal lagoons. The nature and magnitude of these impacts are uncertain. The objective of the research is to determine the climate change impacts on mixing and circulation at Songkhla lagoon, Thailand. Songkhla lagoon is the largest lagoonal water resource in Thailand and Southeast Asia. The lagoon is a combined freshwater and estuarine complex of high productivity which represents an extraordinary combination of environmental resources believed to be unique in the region. This work is part of a Climate Change impact assessment framework. It is the validation phase (step 5) of the framework applying a case study. Delft 3D was used to simulate CC scenarios in the climate downscaling models, part of the previous framework steps. These results were compared to the current conditions to determine the main changes in mixing and circulation in the coastal lagoon. Three indicators were applied to quantify the impacts: flushing time, salinity intrusion and stratification. The results suggest an increase in water velocities at the inlet in future scenarios and a decrease of flushing time. Salinity and stratification showed more complex changes in futures scenarios.
Territorial Life Cycle Sustainability Assessment (T-LCSA) of Sassuolo Industrial District (Italy)
Authors: Settembre-Blundo Davide , García-Muiña Fernando E. , Pini Martina , Volpi Lucrezia , Siligardi Cristina , Ferrari Anna Maria
Published: May 2018

One of the biggest challenges for European industry is to introduce sustainability principles into business models. This is particularly important in raw material and energy intensive manufacturing sectors such as the ceramic industry. The present state of knowledge lacks a comprehensive operational tool for industry to support decision-making processes geared towards sustainability. In the ceramic sector, the economic and social dimensions of the product and processes have not yet been given sufficient importance. Moreover, the traditional research on industrial districts lacks an analysis of the relations between firms and the territory with a view to sustainability. Finally, the attention of scholars in the field of economic and social sustainability, has not yet turned to the analysis of the Sassuolo district. Therefore, in this paper we define the Territorial Life Cycle Sustainability Assessment (T-LCSA), a method that can be a suitable tool to fill this gap, because through a mathematical model it is possible to obtain the information useful for decision makers to integrate the principles of sustainability both at the microeconomic level in enterprises, and at the meso-economic level for the definition of economic policies and territorial governance. Environmental and socio-economic analysis was performed from the extraction of raw materials to the packaging of the product on different product categories manufactured by the Italian ceramic industries of the Sassuolo district (northern Italy). For the first time the T-LCSA model, usually applied to unitary processes, is extended to the economic and industrial activities of the entire district, extending the prospect of investigation from the enterprise and its value chain to the integrated network of district enterprises.
Pre-Service Science Teachers' Perception About High Order Thinking Skills (HOTS) in the 21st Century
Authors: Afandi Afandi , Sajidan Sajidan , Akhyar Muhammad , Suryani Nunuk
Published: May 2018

In the 21st century, the pre-service science teachers faced on extremely global competitiveness, globalization, technologically driven by information and rapidly media-saturated that needs appropriate skills to meet these challenges. The aims of this study is to identify pre-service science teacher perception about high order thinking skills (HOTs) in 21st century. This study employed quantitative design using a survey research method involved 120 pre-service science teachers from Tanjungpura University. The results of this study indicated that prospective science teachers have an awareness of the importance of HOTs and their also knowing that the learning do emphasized on the aspects of HOTs is essential to face the challenges of the 21st century. It is indicated by the mean score of pre-service science teacher perception about the important of HOTs to meet the challenges in the 21st century (M = 4.29, SD = 0.61) and the skills of HOT that their will be required to becomes a teacher in the 21st century (M = 4.31; SD = 0.47) in the high level.  This result provides the reasons why we need cultivating a positive awareness of the importance of HOTs in order to fostering the need for teaching that emphasizes the aspects of HOTs during pre-service education.
Characterization of Various Color Parameters (Anthocyanins and Flavonols) of Leaves and Flowers in Different Autochthonous Genotypes of Cyclamen purpurascens
Authors: Osterc Gregor , Petkovsek Maja Mikulic , Stampar Franci , Kiprovski Biljana , Ravnjak Blanka , Bavcon Joze
Published: May 2018

Common cyclamen (Cyclamen pururascens Mill.) is a very interesting species not only for various breeding programs but also as an ornamental plant. The plants possess interesting floral and foliage characteristics, nice fragrances, and a very useful flavonol profile. The last is very important from the point of view of protecting against diseases and physiological disorders. Twenty-two different genotypes originating from different regions in Slovenia were analyzed in detail, based on their floral and foliage characteristics. Anthocyanin and flavonol contents were determined using high-performance liquid chromatography (HPLC)-photodiode array-mass spectrometry (MS). Color characteristics were colorimetrically evaluated separately for petals and leaves. In terms of color measurements, significant differences among the sites of origin were shown with parameters a* and L* when petals were analyzed, and with parameter a* when leaves were analyzed. The pH of petal sap stayed within the acid range, ranging from 3.96 to 4.82. Five different anthocyanins (malvidin-3,5-diglucoside, cyanidin-3-neohesperidoside, delphinidin-3-glucoside, delphinidin-3,5-diglucoside, and delphinidine-3-rutinoside) were analyzed in flowers, and this is the first report of delphinidin metabolites naturally present in common cyclamen genotypes. In relation to plant leaves, malvidin-3,5-diglucoside, malvidin-3-rutinoside, malvidin-3-glucoside, cyanidin-3-neohesperidoside, and peonidin-3-neohesperidoside were measured. Fifteen different flavonols were determined in common cyclamen flowers and 10 different flavonols in common cyclamen leaves. Various glycosides of quercetin, myricetin, and kaempferol were analyzed, as well as isorhamnetin-3-rutinoside, laricitin-3-rutinoside, and neohesperidin. The floral and foliage characteristics of the genotypes (physical and chemical) were mainly affected by the environmental conditions of the locality of origin of the genotypes (annual disposition of temperature and precipitation, structure of the soil, etc.).
Variations in Genome Size of Turnip Landraces from Two High-altitude Environments
Authors: Basak Supriyo , Wang Guangyan , Sun Xudong , Yang Yongping
Published: May 2018

Brassica rapa var. rapa (turnip) is considered a main source of food for the inhabitants of the Qinghai-Tibetan Plateau (QTP) and its adjacent highlands when other crops are scarce. The QTP ranges from lat. 25.59°N to 39.49°N and from long. 73.29°E to 104.40°E, whereas the Yunnan Plateau ranges from lat. 20.00°N to 29.16°N and from long. 96.00°E to 110.19°E. A comparison between the turnip landraces of two different plateau environments can provide a mechanistic insight into plant adaptation in highlands. The aim of this investigation was to understand the patterns in variation in genome size (GS) between the turnip landraces of two plateau environments. We used a well-established protocol to count chromosome number and performed propidium iodide flow cytometry to measure GS. No polyploidy was detected among the turnip landraces tested, and 15.5% variation in GS was observed between the landraces. No consistent pattern pertaining to GS variation emerged after the environmental variables were considered. Thus, we propose that such pattern may reflect the indirect effect of selection, random process, genetic drift, or some other factors on GS through interaction of life-form and phenotypic traits.
The Effect of Residual Stress on Coupling Power Loss of VCSEL Modulus
Authors: Kuang Jao-Hwa , Hsu Chao-Ming , Lin Ah-Der , Luo Jyun-Wei
Published: May 2018

In this article, the effect of residual stress on active region misalignment of laser light sources for vertical cavity surface emitting laser (VCSEL) modulus has been studied. The post-weld-shift variation of active region introduced from the residual stress distribution variation for different VCSEL solder joints, i.e. tin-silver (Sn/3.5Ag) and tin-lead (Sn/37Pb) solder joints, are simulated by employing the thermal-elastic-plastic finite element model of MARC package. The ball grid solidification in reflow process and the creep deformation in the acceleration aging were simulated and analyze. The time and temperature dependent material properties of solders are employed. Numerical results indicate that the post-weld-shift introduced from residual stress in the solidification process are significant, and are also the key reasons to reduce the coupling efficiency in VCSEL packaging. The non-sequential components models in commercial Zemax optical package were used to estimate the optical coupling power loss between the active region and the fiber tip in VSCEL modulus. The results show that the proposed post-weld-shift model is feasible to analyze and to improve the solder joint design in the VCSEL packaging.
The Research of Information Delay in the Neural Network Forecast Remote Control System
Authors: Shuping Xu , Yiwei Chen , Xinhua Cheng , Xiaohui Su
Published: May 2018

Aiming at the issues of random delay and delay uncertainty in both the before channel and feedback channel for network control system, the root causes of random delay influence closed-loop control system by case is analysis, and the predictive control method based on neural network to solve the feasibility of existence network random delay in control system closed-loop control has provided. Simulation results show that the method can reflect and predict the delay characteristics of between measurement data represents the network path, and can effectively substitute for the actual network in the design of closed-loop control system based on Internet to research; the method used fast and accurate can be used for online learning network model and forecast the network delay value, provides a new way to remote closed-loop control based on Internet.
DSM Modelling for Digital Design Using Verilog HDL
Authors: Xue Xing , Chen Yao , Wei Junchao
Published: May 2018

In the practice of product design, the efficient control of complexity has increasingly gained importance. The Dependency Structure Matrix (DSM) has proved to be a useful tool for analysing system structure and managing structural complexity. In order to provide a deep insight of system structure in designing Verilog HDL source code artefacts for digital system designers and project managers, the paper proposes a DSM modelling method based on the characteristics of the digital system structural modelling with Verilog and the component dependencies relationship. A DSM modelling example is presented. Result shows that with the DSM model, the source code artefacts can be efficiently analyzed.
Improved K-means Algorithm Based on optimizing Initial Cluster Centers and Its Application
Authors: Linyao Xue , Jianguo Wang
Published: May 2018

Data mining is a process of data grouping or partitioning from the large and complex data, and the clustering analysis is an important research field in data mining. The K-means algorithm is considered to be the most important unsupervised machine learning method in clustering, which can divide all the data into k subclasses that are very different from each other. By constantly iterating, the distance between each data object and the center of its subclass is minimized. Because K-means algorithm is simple and efficient, it is applied to data mining, knowledge discovery and other fields. However, the algorithm has its inherent shortcomings, such as the K value in the K-means algorithm needs to be given in advance; clustering results are highly dependent on the selection of initial clustering centers and so on. In order to adapt to the historical data clustering of the geological disaster monitoring system, this paper presents a method to optimize the initial clustering center and the method of isolating points. The experimental results show that the improved k-means algorithm is better than the traditional clustering in terms of accuracy and stability, and the experimental results are closer to the actual data distribution.
Research and Implementation of Load Balancing Technology for Cloud Computing
Authors: Hong Sun , Weifeng Wang , Shiping Chen , Liping Xu
Published: May 2018

This article selects load balancing system technology to analyze, combines the live migration technology of virtual machine, and studys the frame of virtual machine live migration as well as the mathematical model applied to concrete process of the migration. The article presents that the process of combining the specific strategies of load balance to the frame of live migration, that the simulation experiment and conclusion to this total process. The study takes Eucalyptus as experimental platform, and decides initial to take Xen as experimental virtual machine. The article’s innovations are to optimize the design of virtual machine live migration in cloud environment, and to combine the specific strategies of load balance to the process of live migration. After designing and analyzing the specific strategies of load balance modularization, according to rationalizations that the technology of live migration can apply to the specific strategies of load balance, the study sets the measure index to evaluate load balance, and solute consequently the problem of load in cloud environment, which is realized in the process of live migration. It turned out that algorithm fusion raised has obvious performance advantages.
Multi Objective Optimization of Virtual Machine Migration Placement Based on Cloud Computing
Authors: Hong Sun , Qing Tang , Liping Xu , Shiping Chen
Published: May 2018

How to improve the resource utilization of the cloud computing system has been one of the key content of the research of the cloud computing. The traditional multi-objective ant colony optimization was improved, studied the virtual machine live migration framework, combined with the elimination method to solve virtual machine migration and placement of multi-objective optimization problem, the load balanced specific strategies are integrated into the framework of a dynamic migration, simulation experiments are carried out and the conclusions are made for it. The algorithm can obtain the optimal solution through the continuous updating of pheromone. The main consideration is the Service level contract violation rate(S), Resource loss(W),Power consumption (P). Experimental results show that ,compared with the traditional heuristic method and genetic algorithm, the algorithm is advantageous to the parallel computation, and it’s able to achieve the optimal tradeoff and compromise between multiple conflicting objectives. In the case of service level contract violation rate is low, system resource waste and power consumption are at the least, so it has feasibility.
Acute High Temperature Response in Wheat
Authors: Nuttall James G. , Barlow Kirsten M. , Delahunty Audrey J. , Christy Brendan P. , O’Leary Garry J.
Published: May 2018

Core Ideas

Heat waves can significantly reduce wheat production and quality in arable cropping regions.

Modeling could aid the development of adaptive strategies to climate and weather variables.

Further model refinement for step‐change response of wheat to high temperature is required.

High temperature applied 5 days prior to anthesis reduced grain set by 0.16% per °C×h (>32°C).

High temperature applied after anthesis reduced individual grain weight by 0.05% per °C×h (>32°C).

Heat waves have a significant impact on crop production and quality of many staple grains including wheat. Under climate change, changing weather patterns including greater temperature volatility are also likely to further affect yield stability. Simulation modeling provides a powerful tool to investigate the interactive effects of abiotic factors and develop adaptive strategies; however, many of these models do not adequately account for the step change response to high temperature occurring during the crop reproductive phase. Empirical response data will support the development of robust algorithms for crop models. We present results from three experiments on the response of wheat to a range of acute high‐temperature treatments. For 35, 37, and 42°C and 1, 3, and 5 d of exposure (∼6 h d−1), expressed as heat sum, °C×h (above 32°C), high temperature applied 5 d prior to anthesis reduced grain number and yield by 0.16 and 0.15% per °C×h respectively, whereas individual grain weight and grain nitrogen concentration increased by 0.03 and 0.06% per °C×h, respectively. For high temperature applied after anthesis, individual grain weight decreased by 0.05% per °C×h, grain nitrogen concentration increased by 0.03% per °C×h, and yield was reduced by 0.07% per °C×h. The often asymptotic response meant exponential functions provided a superior fit. Water availability prior to anthesis attenuated wheat response to high temperature. Such algorithms could contribute to improving our prediction of the step change response of wheat to high temperature within crop models and more broadly contribute to developing strategies for crop adaptation to climate change using a modeling approach.
Short‐term Detection of Imidacloprid in Streams after Applications in Forests
Authors: Wiggins Greg , Benton Elizabeth , Grant Jerome , Kerr Marie , Lambdin Paris
Published: May 2018

Imidacloprid, a neonicotinoid insecticide, is a major component of hemlock woolly adelgid (HWA) [Adelges tsugae (Annand)] management programs that are critical to protecting forest health in the eastern United States. However, the impact of imidacloprid soil applications in forests on some aquatic macroinvertebrate species by leaching into aquatic systems is uncertain. The time for residues from imidacloprid soil applications to migrate from treated hemlocks to nearby streams and the concentrations at which imidacloprid may occur after initial migration is unknown. The presence and concentration of imidacloprid in three streams adjacent to recently treated hemlock (soil drench >10 m from stream channels) were assessed in the Big South Fork National River and Recreation Area. Two standard water grabs were collected monthly for 1 yr from a location downstream from imidacloprid‐treated areas. Samples were analyzed using liquid chromatography tandem mass spectrometry (limit of detection = 0.025 μg L−1). Imidacloprid was detected in all treatment streams during a single rain event that occurred 184 to 196 d after treatments, and concentrations ranged from 0.053 to 0.833 μg L−1. Imidacloprid was not detected on any other sampling date from treatment streams. All observed positive detections exceeded the USEPA freshwater invertebrate chronic endpoint (0.01 μg L−1). One stream sample exceeded the USEPA freshwater invertebrate acute endpoint (0.39 μg L−1). However, previous macroinvertebrate community assessments in streams with similar concentrations did not indicate negative effects to aquatic fauna. These findings help characterize the risk of imidacloprid treatments to stream macroinvertebrates within 1 yr of soil applications.

Core Ideas

Short‐term movement of imidacloprid from treated forest trees to streams was unclear.

Imidacloprid was detected in all three treatment streams ≥184 d after treatment.

Imidacloprid concentrations in streams ranged from 0.053 to 0.833 μg L−1.

Some concentrations were above USEPA freshwater invertebrate chronic and acute endpoints.
Fate of Pirlimycin and Antibiotic‐Resistant Fecal Coliforms in Field Plots Amended with Dairy Manure or Compost during Vegetable Cultivation
Authors: Wind Lauren , Krometis Leigh‐Anne , Hession W. Cully , Chen Chaoqi , Du Pang , Jacobs Kyle , Xia Kang , Pruden Amy
Published: May 2018

Identification of agricultural practices that mitigate the environmental dissemination of antibiotics is a key need in reducing the prevalence of antibiotic‐resistant bacteria of human health concern. Here, we aimed to compare the effects of crop (lettuce [Lactuca sativa L.] or radish [Raphanus sativus L.]), soil amendment type (inorganic fertilizer, raw dairy manure, composted dairy manure, or no amendment), and prior antibiotic use history (no antibiotics during previous lactation cycles vs. manure mixed from cows administered pirlimycin or cephapirin) of manure‐derived amendments on the incidence of culturable antibiotic‐resistant fecal coliforms in agricultural soils through a controlled field‐plot experiment. Antibiotic‐resistant culturable fecal coliforms were recoverable from soils across all treatments immediately after application, although persistence throughout the experiment varied by antibiotic class and time. The magnitude of observed coliform counts differed by soil amendment type. Compost‐amended soils had the highest levels of cephalosporin‐resistant fecal coliforms, regardless of whether the cows from which the manure was derived were administered antibiotics. Samples from control plots or those treated with inorganic fertilizer trended toward lower counts of resistant coliforms, although these differences were not statistically significant. No statistical differences were observed between soils that grew leafy (lettuce) versus rooted (radish) crops. Only pirlimycin was detectable past amendment application in raw manure‐amended soils, dissipating 12 to 25% by Day 28. Consequently, no quantifiable correlations between coliform count and antibiotic magnitude could be identified. This study demonstrates that antibiotic‐resistant fecal coliforms can become elevated in soils receiving manure‐derived amendments, but that a variety of factors likely contribute to their long‐term persistence under typical field conditions.

Core Ideas

Pirlimycin was only detected in soils amended with raw dairy manure.

Persistence of ARBs in soil was dependent on antibiotic class and time.

Compost‐amended soils had the highest levels of fecal coliforms resistant to cephalosporins.

Antibiotic presence may not be the sole driver of resistance, as ARBs were found in all soils.
Evaluating Commercial Moisture Probes in Reference Solutions Covering Mineral to Peat Soil Conditions
Authors: Dettmann Ullrich , Bechtold Michel
Published: May 2018

Core Ideas

Two commercially available moisture probes were tested on reference solutions.

Dielectric permittivity was measured across the range from 1 to about 80.

Uncertainties increased with increasing dielectric permittivity.

Electric conductivity influenced dielectric permittivity measurements.

Capability of the probes to measure electric conductivities differed among the probe types.

Capacitance and time domain reflectometry (TDR) probes are frequently used for measurements of the volumetric soil water content. The measurement concept is based on the correlation between volumetric water content and dielectric permittivity (ε). While considerable effort has been made to accurately measure ε in the typical range of mineral soils (<40), little attention has been paid to the capability of moisture probes to measure high ε (>40), typical for highly porous media like organic soils. We evaluated the capability of two moisture probe types (TRIME‐PICO 64 and GS3) to measure ε across the range from 1 to 80. In the case of the TRIME probes, different equations to calculate ε from transit times were tested. Measuring in a set of reference solutions, the TRIME probes had an RMSE of 18.73 for ε values derived using the manufacturer's calibration. With a new calibration, the RMSE was decreased to 3.55. The GS3 probes had an RMSE of 3.96. For both probes, uncertainties increased with increasing ε. We also tested the performance for different electrical conductivities of the reference solutions. Accuracy of ε values was unaffected by increasing conductivities for the TRIME probes but decreased for the GS3 probes. The GS3 probes, however, were able to determine electric conductivities accurately, while TRIME probes failed for electrical conductivity although indicated differently by the manufacturer.
Dikdörtgen Kesitli Viskoelastik Sikloid Çubukların Zorlanmış Titreşimi
Authors: TEMEL Beytullah , ASLAN Timuçin Alp , NOORI Ahmad Reshad
Published: May 2018

Bu çalışmada, lineer elastik veya viskoelastik malzemeye sahip dikdörtgen kesitli sikloid çubukların burulma etkisindeki dinamik davranışı Tamamlayıcı Fonksiyonlar Yöntemi (TFY) ile Laplace uzayında incelenmiştir. Elde edilen adi diferansiyel denklemlerin sayısal çözümleri için 5. Derece Runge–Kutta (RK5) algoritması kullanılmıştır. Formülasyonda, kayma deformasyon ve sönüm etkileri göz önüne alınmıştır. Çubuk malzemesi homojen, izotrop, lineer elastik veya viskoelastik olarak kabul edilmiştir. Bununla beraber, viskoelastik durumda Kelvin tipi sönüm modeli kullanılmıştır. Laplace uzayında elde edilen çözümlerden zaman uzayına geçmek için uygun bir ters dönüşüm yöntemi kullanılmıştır. Bu amaçla dikdörtgen kesitli sikloid çubukların dinamik analizi için Fortran dilinde bir bilgisayar programı hazırlanmıştır. Hazırlanan bilgisayar programın sonuçları, ANSYS sonlu eleman paket programı kullanılarak hesaplanan sonuçlar ile karşılaştırılıp, bu yöntemin doğruluğu ve üstünlüğü gösterilmiştir.
Crescimento do camarão Litopenaeus vannamei em viveiros e tanques utilizando efluente do processo de dessalinização
Authors: Cavalheiro Thiago Brandão , Conceição Marta Maria da , Ribeiro Thais Teresa Brandão Cavalheiro
Published: May 2018

A carcinicultura se apresenta como uma atividade econômica de grande importância para a região nordeste do Brasil. O semiárido nordestino possui grande quantidade de poços salinizados que podem fornecer água e tornar a região uma nova área para esta atividade. O estudo consiste na avaliação do efluente da dessalinização de uma fabrica de água mineral no cariri paraibano para o cultivo do camarão, realizando a comparação com o cultivo tradicional realizado no vale do Rio Paraíba/PB. Foram realizadas análises físico-químicas e microbiológicas das águas, avaliação do crescimento, nos dois ambientes de cultivo (Agreste e Cariri Paraibano). A qualidade das águas de cultivo analisadas, pH, temperatura, transparência, salinidade, alcalinidade, dureza total, amônia, nitrito, nitrato e coliformes totais permaneceram nas faixas estabelecidas por resoluções para cultivo de camarão contribuindo positivamente para o crescimento e sobrevivência dos camarões. O crescimento ocorreu em períodos de 74 a 86 dias (Cariri e Agreste), onde foi verificada uma superioridade de 40% no ganho de peso diário dos camarões cultivados no Cariri frente aos do Agreste. Foi identificado que o modelo matemático de crescimento cúbico apresentou melhor índice de ajuste aos pontos obtidos para os dois ambientes de estudo.
Amino acid profile and percent composition of meals and feeds used in shrimp farming
Authors: Prado João Paulo de Sousa , Cavalheiro José Marcelino Oliveira , Silva João Andrade da , Cavalheiro Thiago Brandão , Silva Fernanda Vanessa Gomes da
Published: May 2018

Crustaceans don't require a specific amount of protein but require a balanced supplementation of essential amino acids. The aim of this study was to evaluate the composition and profile of amino acids in feed and fish meal used in shrimp farming. The samples used for the experiment were commercial feed with protein levels of 35 and 40% and fish meal and soya meal used in feed formulations. The chemical composition of the feed samples and their respective fish meal and soya meal were determined according to the AOAC methods and analyzes for obtaining amino acid profile was performed using an elution gradient in HPLC system. The percentages obtained of moisture, ash, protein, fat and fiber related the two samples of fish meal (FPA and FPB) were 4.4, 14.3, 61.8, 12.8, 0.1% and 5 , 9, 17.1, 53.9, 6.9; 0.30%, respectively. The percentages obtained of moisture, ash, protein, fat and fiber related the two samples of soy flour (FSA and FSB) were 5.5, 13.2, 46.7, 4.0, and 5.2% 5.8, 11.9, 49.0, 5.8; 4.5%, respectively. Comparing the results of amino acid profile of the feed used in this study with those determined by chemical score, it can be noted that diets A and B were not satisfactory in the content of essential amino acids, except lysine, which showed chemical score (EQ) higher than the standard. The fish meal and soya meal used in the formulation of commercial feed (RA) had amino acid profile superior to those found in meals used for obtaining commercial feed (RB).
Return period of cold air mass in Baghdad
Authors: Abass Dalya K.
Published: April 2018

The occurrence of cold air masses varies in Iraq from cold to very cold at different intervals, where these air masses are concentrated only in winter. In this study, the return period of cold air masses was calculated using a binary distribution (Binomial Distribution), It was found that most cold air masses were likely to return with the same intensity for a period of five years from the study period.
Improving Visualization of Female Breast Cancer Survival Estimates: Analysis Using Interactive Mapping Reports (Preprint)
Authors: Ben Ramadan Awatef Ahmed , Jackson-Thompson Jeannette , Schmaltz Chester Lee
Published: May 2018

BACKGROUND

The Missouri Cancer Registry collects population-based cancer incidence data on Missouri residents diagnosed with reportable malignant neoplasms. The Missouri Cancer Registry wanted to produce data that would be of interest to lawmakers as well as public health officials at the legislative district level on breast cancer, the most common non-skin cancer among females.

OBJECTIVE

The aim was to measure and interactively visualize survival data of female breast cancer cases in the Missouri Cancer Registry.

METHODS

Female breast cancer data were linked to Missouri death records and the Social Security Death Index. Unlinked female breast cancer cases were crossmatched to the National Death Index. Female breast cancer cases in subcounty senate districts were geocoded using TIGER/Line shapefiles to identify their district. A database was created and analyzed in SEER*Stat. Senatorial district maps were created using US Census Bureau’s cartographic boundary files. The results were loaded with the cartographic data into InstantAtlas software to produce interactive mapping reports.

RESULTS

Female breast cancer survival profiles of 5-year cause-specific survival percentages and 95% confidence intervals, displayed in tables and interactive maps, were created for all 34 senatorial districts. The maps visualized survival data by age, race, stage, and grade at diagnosis for the period from 2004 through 2010.

CONCLUSIONS

Linking cancer registry data to the National Death Index database improved accuracy of female breast cancer survival data in Missouri and this could positively impact cancer research and policy. The created survival mapping report could be very informative and usable by public health professionals, policy makers, at-risk women, and the public.
Ethical Issues in Addressing Social Media Posts About Suicidal Intentions During an Online Study Among Youth: Case Study (Preprint)
Authors: Young Sean D , Garett Renee
Published: May 2018

UNSTRUCTURED

Due to the popularity of social media, researchers are increasingly conducting studies that monitor and analyze people’s health-related social media conversations. Because social media users can post about any topic at any time, no known best ethical practices exist as to whether and how to monitor participants’ posts for safety-related issues that might be unrelated to the study, such as expressions of suicidal intentions. This is a case study during a social media-based study on sleep and activity among freshman undergraduate students, where we by chance noticed that a student was using social media to express suicidal intentions. Although we connected the student to student psychological services in order to receive treatment, we encountered a number of barriers that initially prevented this from occurring, such as institutional review board and regulatory practices related to lack of experience with these newer types of studies. We discuss the implications of this experience for future research.
Meat Science Lexicon
Authors: Seman Dennis L. , Boler Dustin D. , Carr C. Chad , Dikeman Michael E. , Owens Casey M. , Keeton Jimmy T. , Pringle T. Dean , Sindelar Jeffrey J. , Woerner Dale R. , de Mello Amilton S. , Powell Thomas H.
Published: May 2018

The American Meat Science Association (AMSA) became aware of the need to develop a Meat Science Lexicon for the standardization of various terms used in meat sciences that have been adopted by researchers in allied fields, culinary arts, journalists, health professionals, nutritionists, regulatory authorities, and consumers. Two primary categories of terms were considered. The first regarding definitions of meat including related terms, e.g., “red” and “white” meat. The second regarding terms describing the processing of meat. In general, meat is defined as skeletal muscle and associated tissues derived from mammals as well as avian and aquatic species. The associated terms, especially “red” and “white” meat have been a continual source of confusion to classify meats for dietary recommendations, communicate nutrition policy, and provide medical advice, but were originally not intended for those purposes. In this paper, processed meat is defined in terms of the actions of processing, i.e., “minimal processing” and “further processing”; the main distinction being whether additional ingredients were included or excluded. Meat processing has become more complex as technologies have improved, and the official words to describe them have not remained current.
Peningkatan Hasil Tanaman Okra Dengan Pemberian Pupuk Kompos dan NPK
Authors: Yuliartini Made Sri , Sudewa Ketut Agung , Kartini Luh , Praing Ersa Remi
Published: May 2018

The purpose of this research is to determine the effect of compost and NPK Phonska fertilizer application to the growth and yield of okra plants, and to get optimum dose. This research was conducted in experimental garden of Agricultural Faculty of Warmadewa University. The design used in this research is factorial randomized block design (RAK) consisting of two treatments: compost fertilizer and NPK Phonska fertilizer. The interaction treatment between doses of compost fertilizer with NPK Phosnka and single treatment of NPK Phonska have no significant effect on all observed variables. The treatment of compost fertilizer dosage have no significant to effect foe leaf number and dry weight of oven fruit, but it had significant effect to the weight of fresh and dried weight of oven stover and very significant effect on the variables of plant height, the number of fruit and the weight of fresh fruit. The dosage of compost fertilizer 8 ton ha-1 to got the highest fresh weight of fruit per plant which is 380,42 g, an increase of 44,05% if compared with the lowest fresh fruit weight per plant obtained in the treatment without compost 0 tons ha- ˡ of 264.08 g. The results of the distribution of NPK Phonska at different doses have no significant effect on one another . However, , the highest fresh fruit weight was obtained at NPK treatment at 400 kg ha-1 treatment ie 351,75g. This increased by 7.02% when compared with the freshest weight of lowest fruit obtained at 200 kg ha-1 treatment ie 328,67 g.
Novel silver(I) compounds with 1-adamantanamine
Authors: Jeremic Dejan , Djordjevic Milena , Miletic Srdjan , Andjelkovic Ljubica , Sladic Dusan , Brceski Ilija
Published: May 2018

In this work, three novel silver(I) complexes with an almost completely rigid and bulky monodentate ligand, 1-adamantanamine, were synthesized. The aliphatic amine, 1-adamantanamine, is the sole electron donor ligand in these complexes. In addition to spectroscopic characterization, the basic biological activities of the new compounds were investigated and their minimum inhibitory concentrations were determined. The antifungal and antibacterial activities indicate that these compounds could potentially be applied as new therapeutics.
Verification and Provisional Privacy- Preservation Message Framework for VANETs
Authors: Sharmila P. , Mangaiarkarasi S.
Published: April 2018

The Vehicular Ad hoc Networks (VANETs), certification is an important protection service for together inter-vehicle and vehicle-roadside transportations. The VANET is an invention that utilizes moving vehicles as hubs in a network to make a portable network to give correspondence among vehicles. In this paper proposed a novel framework with preservation and repudiation (ACPN) for VANETs. The proposed ACPN gives the contingent vehicle secrecy to privacy preservation with traceability for the non-repudiation, on the off chance that noxious vehicles manhandle mysterious verification procedures to accomplish pernicious assaults. A RTA produces cryptographic space parameters for the RSUs and vehicles in its district, and conveys these keys to them over secure channels. It deals with a rundown of vehicles of which the investments have been denied, refreshes the rundown intermittently, and promotes the rundown to the network to segregate the traded off vehicles. On the off chance that a vehicle transmits false messages for malevolent purposes out and about, the RTA is in charge of following and distinguishing the wellspring of the messages to determine any debate. RTAs at various locales must be cross-certiﬁed. Along these lines, vehicles from various areas or diverse makers can be verified to each other by means of RTAs. Demonstrate the plausibility of ACPN as for the framework investigation on the destinations, for example, validation, privacy preservation, non-repudiation, time limitation, independency, accessibility and joining. In addition, the capacity and calculation over-head of ACPN is assessed by quantitative estimations in the execution assessment.
A Technique for Secure Data Deduplication in Cloud Storage
Authors: Johnson Reena , Bramhe M. V.
Published: April 2018

Today people are depending on cloud for their wide storage needs, hence efficient storage methods need to be employed . This can be achieved using Data Deduplication. Data Deduplication is a method to reduce the storage need by eliminating redundant data. Thus by storing less data you would need less hardware and would be able to better utilize the existing storage space. Based on this idea, we design an encryption scheme that guarantees semantic security for unpopular data and provides weaker security and better storage and bandwidth benefits for popular data. This way, data deduplication can be effective for popular data, whilst semantically secure encryption protects unpopular content. We show that our scheme is secure under the Symmetric External Decisional Diffie-Hellman Assumption in the random oracle model.
Faster and Efficient Time Division Multiple Access (TDMA) System
Authors: Gupta Ashi
Published: April 2018

In this paper the author has developed a new design to implement the TDMA(Time division multiple access) system. It is a verilog code that is simulated on the “Mentor graphics MODEL SIM- ALTERA 10.1d(QUARTUS II 13.0) “ software. It allows several users to share the same frequency channel by dividing the signal into different time slots. It takes requests from the users, processes them and provide grants to the users one by one according to the priority set, in one clock cycle per grant better than the previous design which takes more than 2 cycles to process 1 request.
Multi-Exposure Image Fusion through Structural Patch Decomposition with Gaussian Filter
Authors: Sharma Avinash , Parashar Pallavi
Published: April 2018

It propose a simple yet effective Structural Patch Decomposition with Gaussian Filter (SPDGF) approach for multi-exposure image fusion (MEF) that is robust to ghosting effect. It decomposes an image patch into three conceptually independent components: signal strength, signal structure, and mean intensity. Upon fusing these three components separately then reconstruct a desired patch and place it back into the fused image. This novel approach benefits MEF in many aspects. First, as opposed to most pixel-wise MEF methods, the proposed algorithm does not require post-processing steps to improve visual quality or to reduce spatial artifacts. Second, it handles RGB color channels jointly and thus produces fused images with more vivid color appearance. Third and most importantly, the direction of the signal structure component in the patch vector space provides ideal information for ghost removal. It allows us to reliably and efficiently reject inconsistent object motions then a chosen reference image without performing computationally expensive motion estimation. Now compare the proposed algorithm with SPD-MEF methods on different images (with camera and object motion). Extensive experimental results demonstrate that the proposed algorithm not only outperforms previous MEF algorithms on static scenes but also consistently produces high quality fused images with little ghosting artifacts for dynamic scenes. Moreover, it maintains a lower computational cost compared with state-of-the-art MEF de-ghosting schemes.
SYNTHESIS OF NEURAL NETWORK BASED ON PETRY NET USING AS EXAMPLE THE PROBLEM OF MOVEMENT AND STABILIZATION OF STRUCTURE GROUPS OF UNMANNED AERIAL VEHICLES
Authors: Romannikov Dmitry Olegovich , Voevoda Alexander Aleksandrovich
Published: April 2018

The article focuses on the approach to forming the structure of a neural network with application of a pre-built algorithm using Petri nets which represent a well-characterized body of mathematics and help to describe algorithms, in particular, distributed asynchronous systems. According to the proposed approach, the model built in Petri nets serves as the basis for further developing the neural network. There was proposed the idea of informal transformation, which makes sense because the structure of Petri net provides substantiation for the structure of the neural network. This fact leads to decreasing the number of training parameters in the neural network (in the example described in the article the decrease was more than twice: from 650 to 254), increasing the time of the network training and getting initial values for the training parameters. It has been stated that with the initial values obtained the training time grows even more and, thus, training process acts as fine-adjusting values of parameters. Transformation can be explained by the fact that both Petri nets and neural networks act as languages for describing functions, and differ only in the case of neural networks, where the presented function must be trained first (or to find parameter values). The above-mentioned approach is illustrated by the example of the problem of automatic formation of a group of unmanned aerial vehicles (UAV) and their movement. In this problem, identical instances of the neural network are located on each UAV and interact in asynchronous mode.