INPUT SPLITS DESIGN TECHNIQUES FOR NETWORK INTRUSION DETECTION ON HADOOP CLUSTER

Intrusion detection system (IDS) is one of the most important components being used to monitor network for possible cyber-attacks. However, the amount of data that should be inspected imposes a great challenge to IDSs. With recent emerge of variousbig data technologies, there are ways for overcoming the problem of the increased amount of data. Nevertheless, some of this technologies inherit data distribution techniques that can be a problem when splitting a sensitive data such as network data frames across a cluster nodes. The goal of this paper is design and implementation of Hadoop based IDS. In this paper we propose different input split techniques suitable for network data distribution across cloud nodes and test the performances of their Apache Hadoop implementation. Four different data split techniques will be proposed and analysed. The techniques will be described in detail. The system will be evaluated on Apache Hadoop cluster with 17 slave nodes. We will show that processing speed can differ for more than 30% depending on chosen input split design strategy. Additionally, we’ll show that malicious level of network traffic can slow down the processing time, in our case, for nearly 20%. The scalability of the system will al so be discussed

Polyphenols as Possible Agents for Pancreatic Diseases

Pancreatic cancer (PC) is very aggressive and it is estimated that it kills nearly 50% of patients within the first six months. The lack of symptoms specific to this disease prevents early diagnosis and treatment. Today, gemcitabine alone or in combination with other cytostatic agents such as cisplatin (Cis), 5-fluorouracil (5-FU), irinotecan, capecitabine, or oxaliplatin (Oxa) is used in conventional therapy. Outgoing literature provides data on the use of polyphenols, biologically active compounds, in the treatment of pancreatic cancer and the prevention of acute pancreatitis. Therefore, the first part of this review gives a brief overview of the state of pancreatic disease as well as the procedures for its treatment. The second part provides a detailed overview of the research regarding the anticancer effects of both pure polyphenols and their plant extracts. The results regarding the antiproliferative, antimetastatic, as well as inhibitory effects of polyphenols against PC cell lines as well as the prevention of acute pancreatitis are presented in detail. Finally, particular emphasis is given to the polyphenolic profiles of apples, berries, cherries, sour cherries, and grapes, given the fact that these fruits are rich in polyphenols and anthocyanins. Polyphenolic profiles, the content of individual polyphenols, and their relationships are discussed. Based on this, significant data can be obtained regarding the amount of fruit that should be consumed daily to achieve a therapeutic effect

Supplementary data for the article: Gojgic-Cvijovic, G. D.; Jakovljevic, D. M.; Loncarevic, B. D.; Todorovic, N. M.; Pergal, M. V.; Ciric, J.; Loos, K.; Beškoski, V.; Vrvić, M. M. Production of Levan by Bacillus Licheniformis NS032 in Sugar Beet Molasses-Based Medium. International Journal of Biological Macromolecules 2019, 121, 142–151. https://doi.org/10.1016/j.ijbiomac.2018.10.019

Supplementary material for: [https://www.sciencedirect.com/science/article/pii/S0141813018332847?via%3Dihub]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/350]Related to accepted version: [http://cherry.chem.bg.ac.rs/handle/123456789/2799

Primary hypothyroidism quality of life assessment by application of different questionnaires and its different processing

Primarni hipotireoidizam negativno utiče na kvalitet života obolelih. Poboljšanje kvaliteta života očekuje se uspostavljanjem eutireoidnog stanja primenom levotiroksina. Kvalitet života se može "proceniti" primenom različitih upitnika, poput upitnika opšteg zdravlja (GHQ12; engl. General Health Questionnaire) i tireoidno specifičnog upitnika (TSQ; engl. Thyroid Symptom Questionnaire). Ciljevi ovog rada su: sumiranje standardno i modifikovano rangiranih odgovora oba upitnika u skorove; ispitivanje postojanja razlika u apsolutnim vrednostima skorova među grupama ispitanika; svrstavanje dobijenih skorova u različite klastere (bez poremećaja, manji poremećaj, veliki poremećaj), i ispitivanje postojanja razlika u distribuciji frekvencija ispitanika među njima. Studija preseka je sprovedena u KBC Zemun i obuhvatila je 90 ispitanica, koje su bile podeljene u tri jednake grupe (30 po grupi): hipotireoidnu bez terapije, eutiroidnu sa levotiroksinom i kontrolnu, eutireoidnu grupu bez terapije. Ispitanice su zaokruživale svoj odgovor na postavljena pitanja upitnika, koji je potom rangovno transformisan pomoću dva modelastandardnog i modifikovanog, a potom zbirno sumiran. Za statističku analizu korišćen je softver SPSS for Windows 18.0. Prosečan nivo tireostimulišućeg hormona (TSH) u ispitivanoj populaciji je iznosio 1,3±0,3 (1,1-2,2) mU/L. Prosečni TSQm, TSQs, GHQm and GHQs skorovi su bili 14±7, 13±6, 11±7, i 11±6 i razlikovali su se među grupama. Najniži skorovi su registrovani u grupi levotiroksinom-tretiranih, nezavisno od modela rangiranja, pri čemu je nivo TSH ukazivao na adekvatnu supstituciju levotiroksinom. Prosečni TSQs/TSQm i GHQs/GHQm skorovi pokazuju međusobnu statističku korelaciju. Skorovi i skorom-definisani klasteri oba primenjena upitnika odgovaraju kliničkoj prezentaciji prikazanoj kroz grupe ispitivane populacije. S obzirom da se prosečni skorovi upitnika međusobno razlikuju, a da oba modela rangovne transformacije istog upitnika daju sličan skor, zaključujemo da je dovoljno koristiti po jedan upitnik iz obe kategorije instrumenata za ispitivanje kvaliteta života. Jednostavnost primene ovih upitnika, nezavisno od modela transformacije dobijenih odgovora u rangove, omogućava njihovu primenu pri započinjanju supstitucije levotiroksinom, ali takođe i proceni efikasnosti primenjene terapije.Primary hypothyroidism negatively affects patients' quality of life. Improving the quality of life is expected by establishing eutyreoid state using levothyroxine therapy. The quality of life can be "assessed" by applying various questionnaires, such as the general health questionnaire (GHQ12) and thyroid symptom questionnaire (TSQ). The aims of present study were to: sum standard and modified-ranked answers of both questionnaires, rank the scores, test differences in the absolute values of the scores between the groups, classify obtained scores in different clusters (no distress, a minor, and major distress), and test differences in the distribution of frequencies of the respondents among them. Cross-sectional study was conducted in Zemun Clinical Hospital and it included 90 subjects. The subjects were divided into three equal groups (30 subjects per group): hypothyroid without treatment, euthyroid with levothyroxine, and control, euthyroid group without treatment. The subjects answered the questions in the questionnaire, and the answers were then transformed into the ranking of two modelsstandard and modified, and then summarized. Statistical analysis was performed using the SPSS for Windows 18.0. The average level of thyroid stimulating hormone (TSH) in the study population was 1.3 ± 0.3 (1.1-2.2) mU/L. Average TSQm, TSQs, GHQm and GHQs scores were 14±7, 13±6, 11±7 and 11±6 and differed between groups. The lowest scores were registered in the group of levothyroxine-treated, regardless of the ranking models, with the level of TSH that indicates an adequate substitution levothyroxine. Average TSQs/TSQm and GHQs/GHQm scores show a statistical correlation with each other. Scores and scores-defined clusters of both questionnaires are appropriate for clinical presentation shown by specific groups of the population. Considering that the average scores of the questionnaire differ from each other, and that both models rank-transformation of the same questionnaire give a similar score, it is sufficient to use one questionnaire from both categories of instruments for testing the quality of life. The ease of applying these questionnaires, independent of the transformation obtained in response ranges and their application when starting levothyroxine substitution, were used to assess the effectiveness of the therapy

Supplementary data for the article: Gojgic-Cvijovic, G. D.; Jakovljevic, D. M.; Loncarevic, B. D.; Todorovic, N. M.; Pergal, M. V.; Ciric, J.; Loos, K.; Beškoski, V.; Vrvić, M. M. Production of Levan by Bacillus Licheniformis NS032 in Sugar Beet Molasses-Based Medium. International Journal of Biological Macromolecules 2019, 121, 142–151. https://doi.org/10.1016/j.ijbiomac.2018.10.019

Supplementary material for: [https://www.sciencedirect.com/science/article/pii/S0141813018332847?via%3Dihub]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/350]Related to accepted version: [http://cherry.chem.bg.ac.rs/handle/123456789/2799

Resistive gas sensors based on the composites of nanostructured carbonized polyaniline and Nafion

Due to constant necessity to have reliable and sensitive gas sensors in many contemporary technologies, there is a permanent need for development of new sensing platforms with good sensing properties. Here, we demonstrate a novel type of resistive gas sensors based on carbonized polyaniline/Nafion composites. The sensing mechanism of such sensors is based on the sorption of gases by the composites which induce Nafion swelling and decreasing of conductivity. Chemosensitive properties can be tuned by the (i) choice of carbon materials with different conductivities, (ii) Nafion content in the composite, and (iii) thickness of the composite layer. We have shown that the sensors respond to water, acetone, ethanol, and methanol vapors. For the last two cases, we have achieved high sensitivity, fast response, wide concentration range, and good recovery. The use of simultaneous two- and four-point techniques for these sensors provides an internal control of the sensor integrity

Influence of synthetic conditions on the structure and electrical properties of nanofibrous polyanilines and their nanofibrous carbonized forms

Nanofibrous polyanilines (PANIs) were synthesized by several oxidative polymerization pathways that have in common the presence of excess oxidant(s) (ammonium peroxydisulfate and its mixture with hydrogen peroxide), the absence of added acid, and the absence of external template (self-assembly process). Conducting forms of the synthesized PANI nanofibers (re)doped with various acids were further used as precursors for carbonization process to obtain nanofibrous carbonaceous materials (Carb-PANIs). Morphology, molecular structure, surface properties and electrical characteristics of PANI nanofibrous precursors and their carbonized counterparts were studied by scanning electron microscopy, Raman spectroscopy, by measurements of zeta-potential and determination of isoelectric points, as well as by measurements of electrical conductivity

Long-term winter wheat cropping influenced soil organic carbon pools in different aggregate fractions of Chernozem soil

In this study, the role of the different management strategies was investigated, to elucidate soil organic carbon (SOC) loss under the long-term winter wheat cropping. Soil samples from wheat-based cropping systems and native vegetation were analyzed to assess SOC, total nitrogen, water-stable aggregates, mean weight diameter, and the carbon management index. Tillage practices involved moldboard plowing and field cultivators. Differences in SOC contents between treatments were dependant on tillage intensity, biomass production, and fertilization. In the 0-20 cm layer, the highest SOC contents occurred in the gt 2000 mu m soil fraction that received 40 t ha(-1) farmyard manure every fourth year and the lowest SOC content occurred in the 53-250 mu m fraction in the unfertilized treatment. Manure application influenced SOC content and its distribution among soil aggregate fractions but did not affect water-stable aggregates. SOC was primarily enriched within the gt 2000 mu m aggregates, so their turnover is essential for SOC preservation. The carbon management index was highest in 20-40 cm soil depth, which emphasizes the importance of deeper soil layers in SOC conservation. In conclusion, declining SOC levels are related to tillage practices which could not be compensated by fertilization or crop rotation