bluuebunny/crossref_metadata_2025 huggingface dataset:
Retroperitoneal Cystic Lymphangioma: About A Case and Review of The Literature
Authors: Graiouid El Mahdi , Bai Walid , Gallouo Messian , Jandou Issam , Larrache Yassine , Dakir Mohammed , Debbagh Adil , Aboutaieb Rachid
Published: January 2020

Cystic lymphangioma is a rare benign malformative tumor of lymphatic vessels in various locations.

We report the observation of a 62-year-old man who had been consulting for major abdominal distention for 5 years. The clinical examination found a very distended abdomen with collateral venous circulation.

The imaging was in favor of a cystic retro-peritoneal image. Surgical exploration showed a retroperitoneal cystic mass. Anatomo-pathological examination concluded that retroperitoneal cystic lymphangioma.
Factors Coupled the Choice of Clopidogrel, Prasugrel And Ticagrelor in Patients Undergoing Percutaneous Coronary Intervention
Authors: Ravindran Aswathi , Mathew Shanly Susan , Sunny Anjali , George Aeby , S.S. Kiron , Ashraf S. M. , Vimal Binoo
Published: January 2020

Background:Percutaneous coronary intervention is used in patients whose coronary arteries are narrowed and blood flow to the heart are obstructed. Antiplatelets has a major role in patients who have undergone PCI. Selection of antiplatelets is very important and study reveals about the factors associated with the selection of antiplatelet agents, thereby providing maximum therapeutic outcome. Objective: To determine the factors influencing the selection of antiplatelet agents in patients undergoing PCI.

Materials And Methods: A prospective observational study was conducted on antiplatelet agents by carefully analyzing the case records of patients who were selected as the study population. For collection of data, a data collection form was prepared. At the end of the study regression analysis was done to find out the factors influencing selection of antiplatelet agents.

Results: 350 patients were followed,  71.4% males and 28.6  females. Of the 250 male patients 67- SVD, 99- DVD and 84- TVD; whereas in females 29-SVD, 36- DVD and 35- TVD. There was a statistically significant correlation between hypertension (p=0.029), body weight (p=0.001), number of stent implanted (p=0.009) and diameter of stent (p=0.022) with drug. The prevalence of CAD was more in the age group 51-75 years and clopidogrel was the most preferred. Prasugrel was not used in patients greater than 75 years because of major bleeding. None of the patients with renal dysfunction were treated with ticagrelor. Conclusion: Hypertension, bodyweight, number of stent implanted, and diameter of stent were significantly associated with the selection of antiplatelet agents in patients undergoing PTCA.
Isoniazid-resistant Mycobacterium tuberculosis: prevalence, resistance spectrum and genetic determinants of resistance
Authors: Andreevskaya S.N. , Smirnova T.G. , Larionova E.E. , Andrievskaya I.Yu. , Chernousova L.N. , Ergeshov A
Published: January 2020

The lack of simple, rapid diagnostic tests for isoniazid-resistant rifampicin-susceptible tuberculosis infection (Hr-TB) can result in low treatment efficacy and further amplification of drug resistance. Based on the clinical data, this study sought to estimate the prevalence of Hr-TB in the general population and characterize the phenotypic susceptibility and genetic determinants of isoniazid resistance in M. tuberculosis strains. Molecular-genetic and culture-based drug susceptibility tests were performed on M. tuberculosis isolates and M. tuberculosis DNA obtained from the patients with pulmonary TB undergoing treatment at the Central Tuberculosis Research Institute between 2011 and 2018. The tests revealed that Hr-TB accounted for 12% of all TB cases in the studied sample. Hr-TB strains were either resistant to isoniazid only (45%) or had multiple resistance to 2–6 anti-TB agents. Resistance to isoniazid was caused by mutations in the katG gene. Based on the literature analysis and our own observations, we emphasize the importance of developing simple molecular drug susceptibility tests capable of detecting simultaneous resistance to rifampicin and isoniazid and the necessity of their translation into clinical practice.
Изониазид-резистентные Mycobacterium tuberculosis: частота выявления, спектры резистентности и генетические детерминанты устойчивости
Authors: Андреевская С. Н. , Смирнова Т. Г. , Ларионова Е. Е. , Андриевская И. Ю. , Черноусова Л. Н. , Эргешов А.
Published: January 2020

Отсутствие ускоренной диагностики туберкулеза с устойчивостью возбудителя к изониазиду с сохраненной чувствительностью к рифампицину (ИР-ТБ) может быть причиной низкой эффективности терапии и приводить к амплификации лекарственной резистентности, в том числе к формированию множественной лекарственной устойчивости. Целью работы было определить частоту встречаемости ИР-ТБ в современной популяции, охарактеризовать фенотипическую чувствительность и генетические детерминанты устойчивости к изониазиду представителей этой группы M. tuberculosis на репрезентативном материале. Анализировали результаты определения лекарственной чувствительности, полученные при исследовании молекулярно- генетическими и/или культуральными методами изолятов M. tuberculosis / ДНК M. tuberculosis, выделенных от больных туберкулезом легких из клинических отделений Центрального научно-исследовательского институа туберкулеза за период 2011–2018 гг. Частота ИР-ТБ составила 12% от всех выявленных случаев туберкулеза. M. tuberculosis с ИР были как монорезистентными к изониазиду (45%), так и полирезистентными (устойчивыми к 2–6 противотуберкулезным препаратам), а устойчивость к изониазиду была обусловлена мутациями в гене katG, приводящими к высокому уровню резистентности. На основании анализа литературных данных и собственных наблюдений подчеркивается важность разработки и внедрения новых простых молекулярных тестов для определения устойчивости одновременно к рифампицину и изониазиду.
Penggunaan Profile Matching Dan Framework Codeigniter Dalam Pengambilan Keputusan Penerimaan Karyawan Baru Di Loka Monitor Spektrum Frekuensi Radio Pangkalpinang
Authors: Fitriyani Fitriyani , Yanuarti Elly , Yuranda Yuranda
Published: January 2020

Peran sumber daya manusia (SDM) di Loka Monitor Spektrum Frekuensi Radio Pangkalpinang sangat berpengaruh dalam menentukan serta menghasilkan sumber daya manusia yang dapat mendukung mutu serta kesuksesan suatu organisasi. Dalam menentukan karyawan sering terjadinya penilaian yang berdasarkan subjektifias dan nepotisme. Bila dibiarkan dalam jangka waktu yang panjang hal tersebut dapat mempengaruhi kinerja sebuah organisasi sehingga berakibat pada kegagalan organisasi dalam mencapai tujuan. Dalam hal ini penulis mengusulkan penerapan metode Profil Matching dalam pengembangan sistem penunjang keputusan sehingga karyawan diseleksi berdasarkan kriteria tes wawancara, tes tertulis, tes praktek yang terdiri dari Microsoft word dan excel dan tes keahlian. Hasil dari pengolahan data alternatif yaitu pelamar 1 dengan N.S 4.9, pelamar 2 dengan N.S 2.7, pelamar 3 dengan N.S 2.4, pelamar 4 dengan N.S 3.4, pelamar 5 dengan N.S 3.8, Sistem penunjang keputusan yang dibangun menggunakan Framework codeigniter, dengan database MySQL, hasil yang di dapat dari sistem ini adalah mempermudah bagian SDM dalam mengolah data calon karyawan baru dalam mengolah data seleksi dapat dilakukan dengan cara yang professional dan transparan serta mempermudah bagian SDM dalam menghasilkan sumber daya manusia yang dapat mendukung mutu yang baik untuk jangka waktu yang panjang.
The influence of Person-Job Fit on burnout and work engagement
Authors: Heo Changgoo , Shin KangHyun
Published: January 2020

This study was conducted to identify the effects of P-J Fit on burnout and work engagement in a sample of 382 employees from major company. The present study attempted to find out the influences of LMX to burnout and engagement and verify the moderating effects of LMX on the influences. The results showed that P-J Fit reduced level of burnout and elevated level of work engagement and the influences were statistically significant. It means that positive influence of P-J Fit which verified in many previous researches was also founded in burnout and engagement. Next, we found that these positive effects of P-J Fit were moderated by LMX. In other words, LMX were enhancing the positive effect of P-J Fit to engagement and negative effect to burnout. It implies that people who have good relation to their superiors feel less burnout due to P-J Unfit and feel more engagement due to P-J Fit. So, the relations between people in company are as important as job characteristics for human resource management. Finally, Implications and limitations of this study are discussed.
The relationship between proactive personality and creative behavior
Authors: Eun YoungSin , Yoo TaeYong , Seo HakSam
Published: January 2020

The purposes of this study were to examine the influence of proactive personality on creative behavior, the mediating effect of learning goal orientation in the relationship between proactive personality and creative behavior, the moderating effect of creative self-efficacy in the relationship between proactive personality and learning goal orientation, the moderating effects of organizational creative climate and supervisor support for creativity in the relationship between learning goal orientation and creative behavior. Data were gathered from 330 employees who were working in one organization in Korea. To reduce the effect from the common method bias, the creative behavior was rated by others(three hundred and thirty peers, subordinates, and supervisors). As a result, learning goal orientation partially mediated the relationships between proactive personality and creative behavior. Creative self-efficacy moderated the relationship between proactive personality and learning goal orientation. Organizational creative climate moderated the relationship between learning goal orientation and creative behavior. Also supervisor support for creativity had a moderating effect between learning goal orientation and creative behavior. Finally, implication of results and future research tasks were discussed with limitations.
A Case Study in Curriculum Change on Practicum in A Tesl Programme in Two Malaysian Institutions of Higher Learning
Authors: Sathappan Ramesh , Gurusamy Premaraj
Published: January 2020

This study attempts to explain the importance of curriculum change in Higher Learning Institutions. It’s objectives were to identify the similarities and differences between two institutions of Higher Learning in terms of curriculum structure, teaching process and teachers’ digital skills and also examine whether the curriculum change in their respective training programmes produce better quality teachers in Malaysian schools. A qualitative research incorporating questionnaire, document analysis and interviews was conducted to obtain the results.. The data obtained from the study participants were analyzed qualitatively. The findings of the study reveal that (i) both the Higher Learning Institutions have similarities in prioratizing subject matter, professional standards and practical training (ii) Both of them share the same view that curriculum change has produced better quality teachers. The study concludes by predicting there will be more innovative changes in curriculum designing in the Higher Learning Institutions in future. However, it has recommended more classroom activities for students.
Jensen-type geometric shapes
Authors: Pasteczka Paweł
Published: January 2020

We present both necessary and sufficient conditions for a convex closed shape such that for every convex function the average integral over the shape does not exceed the average integral over its boundary.

It is proved that this inequality holds for n-dimensional parallelotopes, n-dimensional balls, and convex polytopes having the inscribed sphere (tangent to all its facets) with the centre in the centre of mass of its boundary.
Banks of filters for implementation of DMWT of an image
Authors: Kováč Ondrej , Mihalík Ján
Published: January 2020

We describee some possible options for implementation of the Discrete multiwavelet transform (DMWT) of an image by using filter banks. DMWT can be implemented by two channel bank of vector filters which are made by cross-connected scalar filters. The properties of DGHM, CL, BiHermite and SA4 multiwavelets are here analyzed, and compression analysis for output normalization of DMWT is performed. A procedure is design of equivalent replacing of 2 channel multifilters bank by 4 channel bank of single scalar filters. Finally, we deal with a possible reduction and combinations of subbands and suggest their use.
Human action recognition using descriptor based on selective finite element analysis
Authors: Kapoor Rajiv , Mishra Om , Tripathi Madan Mohan
Published: January 2020

This paper proposes a novel local descriptor evaluated from the Finite Element Analysis for human action recognition. This local descriptor represents the distinctive human poses in the form of the stiffness matrix. This stiffness matrix gives the information of motion as well as shape change of the human body while performing an action. Initially, the human body is represented in the silhouette form. Most prominent points of the silhouette are then selected. This silhouette is discretized into several finite small triangle faces (elements) where the prominent points of the boundaries are the vertices of the triangles. The stiffness matrix of each triangle is then calculated. The feature vector representing the action video frame is constructed by combining all stiffness matrices of all possible triangles. These feature vectors are given to the Radial Basis Function-Support Vector Machine (RBF-SVM) classifier. The proposed method shows its superiority over other existing state-of-the-art methods on the challenging datasets Weizmann, KTH, Ballet, and IXMAS.
Memristor-based series voltage regulators
Authors: Yavuz Kutluhan Kürşad , Karakulak Ertuğrul , Mutlu Reşat
Published: January 2020

Series linear voltage regulators are integrated circuits commonly used to make adjustable voltage sources. When used with potentiometers, these regulators are able to give adjustable voltage at the output. Memristor is a new nonlinear circuit element which came out in the last decade. It is able to provide electronically adjustable resistance. If a memristor is fed with a voltage over the threshold and it is not under saturation, its resistance also called memristance is dependent on the integration of its current, also called memristor charge. Memristor shows promise for different types and lots of digital and analog applications. In this paper, memristor-based series voltage regulator topologies are suggested and they are examined using parameters and simulations. Some design criteria have been given for the memristor-based series voltage regulators.
A simplified sensorless speed control of permanent magnet synchronous motor using model reference adaptive system
Authors: Ojionuka Everestus , Chinaeke-Ogbuka Ifeanyi , Ogbuka Cosmas , Nwosu Cajethan
Published: January 2020

A simplified sensorless speed control of permanent magnet synchronous motor (PMSM) using model reference adaptive system (MRAS) is presented. The MRAS is designed and incorporated in a complete closed loop PMSM control system fed by a three-phase inverter that utilizes a simplified hysteresis current control (HCC) to generate gating signals. Accurate rotor position, being essential in PMSM control, is estimated using MRAS rather encoders and resolvers which are explicit position sensors thereby eliminating the drawbacks of the traditional speed sensors in drive systems. The performance of this model is compared with an existing model that utilizes encoders and resolvers. Superior performance was obtained from this new model with MRAS. After initial starting transients, it is observed that the rotor speed for the model with MRAS settled to steady state at 0.10 seconds as against the model with speed sensor which attained steady state at 0.31 seconds. Torque response follows the same pattern to return to the load torque of 11Nm at steady state after starting. After speed reversal, the model with MRAS restored to steady state to track the negative speed command at 0.44 seconds. This is a superior performance compared to the model with speed sensor which settled at 0.60 seconds after speed reversal. The results have clearly shown the superiority of sensorless MRAS over traditional drive models with speed sensors. The software used for this research is MATLAB/Simulink 2017 model.
Low-noise and low power CMOS photoreceptor using split-length MOSFET
Authors: Nebhen Jamel , Dubois Julien , Mansouri Sofiene , Ginhac Dominique
Published: January 2020

This paper presents the design of a low-power and low-noise CMOS photo-transduction circuit. We propose to use the new technique of composite transistors for noise reduction of photoreceptor in the subthreshold by exploiting the small size effects of CMOS transistors. Several power and noise optimizations, design requirements, and performance limitations relating to the CMOS photoreceptor are presented. This new structure with composite transistors ensures low noise and low power consumption. The CMOS photoreceptor, implemented in a 130 nm standard CMOS technology with a 1.2 V supply voltage, achieves a noise floor of 2μV/⎷Hz within the frequency range from 1 Hz to 10 kHz. The current consumption of the CMOS photoreceptor is 541 nA. This paper shows the need for the design of phototransduction circuit at low voltage, low noise and how these constraints are reflected in the design of CMOS vision sensor.
Efficient MAC protocol for IEEE 802.11 wireless LANs with obstructing objects
Authors: Choi Woo-Yong
Published: January 2020

Previous experimental studies show that the performance of IEEE 802.11 wireless LANs can be significantly degraded when obstructing moving objects and humans are present in the service area of wireless LANs. We propose the efficient MAC protocol based on the multipolling method to mitigate the interference from obstructing objects.
Non-contact detection of impact damage in carbon fibre composites using a complementary split-ring resonator sensor
Authors: Li Zhen , Wang Tianqi , Haigh Arthur , Meng Zhaozong , Wang Ping
Published: January 2020

In this paper, a new non-contact method for detection of impact damage in carbon fibre-reinforced polymer composites with a complementary split-ring resonator sensor is proposed. The resonance frequency is evaluated as an indicator of the presence of damage. The resonator is made on a printed circuit board, and in the experimental setup it is positioned close to the area of interest. Electromagnetic models are built, and from the resonant responses the appropriate frequency range used for the test is determined. The active sensing element in the resonator is found from the analysis of the magnetic field distribution. The parametric study performed shows that a larger frequency change occurs for a wider impacted region, which is of great use for practical applications. The proposed method is validated by the experimental results, where a frequency shift of 65 MHz was observed for a 0.36 mm deep dent.
Analysis of instantaneous frequency, instantaneous amplitude and phase angle of ferroresonance in electrical power networks
Authors: Akgün Ömer , Akıncı Tahir Çetin , Erdemir Gökhan , Şeker Serhat
Published: January 2020

Ferroresonance is a nonlinear phenomenon that damages the undesired, destructive system for energy transmission lines. The formation and development of this overvoltage ferroresonance phenomenon is an important research topic as a mysterious event in energy power systems. In this study, Seyit Omer-Iklar energy transmission line from Turkey’s electrical transmission networks was modelled using real parameters. Ferroresonance scenario was created on the model. The energy transmission system with the scenario is set to a simulation time of 4 seconds. The first two seconds are set to normal. By cutting off the transmission line in the 2nd sec., the system is provided with ferroresonance drift. According to the data obtained therefrom, spectrograms, instantaneous amplitude, instantaneous frequency and instantaneous phase were conducted. The analyses have made clear that the instantaneous frequency amplitude defined the system’s ferroresonance moment very well.
Robust PID controller design with H2 performance: Descriptor systems approach
Authors: Veselý Vojtech , Körösi Ladislav
Published: January 2020

The paper deals with the problem to obtain robust PID controller design procedure to linear time invariant descriptor uncertain polytopic systems using descriptor system stability theory and H
2 criterion approach in the form of quadratic cost function. In the frame of Lyapunov function, H
2 quadratic cost function and Bellman-Lyapunov equation the obtained designed novel procedure guarantees the robust properties of closed-loop system with parameter dependent quadratic stability/quadratic stability. In the obtained design procedure, the designer could use controller with different structure like as P, PI, PID, PI-D. For PI-D controllers D-part feedback the designer could choose any available output/state derivative variables of real systems. The effectiveness of the obtained results is demonstrated on the randomly generated examples.
The Effects of the Use of Corrugated Cardboards Covered with Ethylene Absorbers on Mango Fruit Quality after Short-Term Storage (Mangifera indica L.)
Authors: Warsiki Endang , Aprilliani Fenny , Iskandar Ade
Published: January 2020

Corrugated cardboard covered with ethylene absorbers is an innovation that can be used to extend the shelf life of mango fruit to slow the loss of fruit quality. Mango fruits ‘Gedong’ were placed in boxes having as the inner parts corrugated cardboard covered with ethylene absorbers. Three storage treatments – corrugated cardboard without ethylene absorber, with activated carbon or activated carbon + potassium permanganate – were used to find the best method to prevent quality deterioration of mango. The color change, mass loss, texture value, and total soluble solids content were evaluated after 10 days of storage. The initial results showed that the highest accumulation of ethylene production by fruit samples was 0.628 ppm·kg−1 on the fourth day after harvest, while the total ethylene production during 8 days of storage was 2.231 ppm·kg−1. The use of ethylene absorbers had significant effects on the quality parameters except for the color changes. Storage for 10 days in boxes lined with corrugated cardboard ethylene absorber in form of activated carbon + potassium permanganate resulted in the lowest mass loss (4.40 ± 2.6%), softness (0.2 ± 0.1 mm·g−1·s−1) and total soluble solids (14.7 ± 1.2 °Brix).
Postharvest Calcium Salt Treatment of Fresh Jujube Fruit and its Effects on Biochemical Characteristics and Quality after Cold Storage
Authors: Moradinezhad Farid , Ghesmati Mehdi , Khayyat Mehdi
Published: January 2020

Jujube fruit quickly undergoes spoilage and normally has a short shelf life. Therefore, the effect of immersion treatment in different calcium salts on qualitative and biochemical characteristics of fresh jujube fruit was evaluated. Treatments included control (distilled water) and solutions of calcium chloride, calcium nitrate, and calcium sulfate at a concentration of 0.5 and 1%. Fruits were immersed in water or calcium salt solution for 5 min, air-dried and then cold stored at 4 °C for 50 days. The results showed that such treatment did not affect significantly the pulp color and the anthocyanin concentration in the fruit. However, the soluble solids in the treated fruits significantly decreased compared with the control. Interestingly, all levels of calcium salts, except 0.5% calcium nitrate, preserved the total antioxidant capacity in comparison with the control. Concentrations of 1% calcium nitrate, chloride, and sulfate significantly increased crispness compared with the control. The taste of fruit treated with calcium sulfate significantly deteriorated compared with the control and other treatments. In general, 1% calcium nitrate and 1% calcium chloride applied before storage preserved or strengthened the jujube fruit qualities after storage compared with control. It can be concluded that such treatment is recommended for practical application.
Magnetized Phosphorus Solution and Mycorrhization with Diversispora versiformis Affect P Use Efficiency, Growth and Photosynthetic Parameters in Sweet Basil (Ocimum basilicum)
Authors: Shabani Edris , Bolandnazar Sahebali , Tabatabaei Seyed Jalal
Published: January 2020

In order to consider phosphorus (P) limitations in agriculture, research has been carried out on the methods that can improve plant growth and increase the efficiency of P use. A pot experiment was conducted to find the effects of magnetized Ca(H2PO4)2·H2O solutions as P source at concentrations 0, 5, 10, 20 and 40 mg·dm−3 and inoculation with arbuscular mycorrhizal fungi Diversispora versiformis on P use efficiency, growth and photosynthetic pigments in sweet basil. P solutions were treated with magnetic field of 110 mT at 3 dm3·min−1 volumetric flow rate. The results indicated that the growth of basil plant, the number of leaf, leaf area, harvest index and chlorophyll a and b contents significantly increased in the result of fertilization with magnetized P solutions and mycorrhizal inoculation as compared to the control. The application of magnetized P solution at 10 mg P·dm−3 and inoculation of mycorrhizal fungi increased P use efficiency by 18.9% and 23.5%, respectively. Findings of the experiment clearly showed that the use of magnetization of P fertilizer and mycorrhization potentially represent natural ways of promoting growth, P status and chlorophyll content in sweet basil.
Fruit Quality and Storability of Some Asian Pear Cultivars Collected in the Gene Bank of the Research Institute of Horticulture, Central Poland
Authors: Skorupińska Anna , Kruczyńska Dorota E. , Konopacka Dorota , Kaczmarek Urszula , Rutkowski Krzysztof P. , Jóźwiak Zbigniew B.
Published: January 2020

The aim of this study was to evaluate the fruit quality of 13 Asian pear cultivars grown in climatic conditions of central Poland. The following cultivars were tested: ‘Chojuro’, ‘Hayatama’, ‘Hosui’, ‘Kosui’, ‘Yuan Huang’, ‘Nijisseiki’, ‘Dżin Li’, ‘Er Shi Shinge’, ‘Er Jang Li’, ‘Golden 20th’, ‘Min Czi Li’, ‘San Li’, and ‘Shinseiki’. Pears were harvested in Experimental Orchard of Research Institute of Horticulture in Dąbrowice (near Skierniewice). Fruits were stored for 10 weeks at 0 °C in regular atmospheric conditions. Flesh firmness (FF), total soluble solids (TSS), and titratable acidity (TA) were measured at harvest and after the storage followed with 1 and 7 days of shelf life (SL) at 18 °C. After the storage, the sensory evaluation was also performed. Among the tested cultivars, ‘Min Czi Li’ and ‘San Li’ were the most firm (above 45 N) and ‘Kosui’ was the least firm (below 28 N) at harvest time. High amount of TSS (above 11% in both seasons and harvest dates) was observed in ‘Chojuro’, ‘Hayatama’, ‘Kosui’, ‘Yuan Huang’, and ‘Er Jang Li’ pears. Low TSS (not more than 10.6% at harvest) was observed in ‘Nijisseiki’, ‘Dżin Li’, and ‘Er Shi Shinge’ cultivars. The large differences among cultivars were observed in TA. High TA was observed in ‘Nijisseiki’ (above 0.32% in all terms of analyses) and low TA in ‘Hayatama’ and ‘Kosui’ (below 0.14%). All of the evaluated cultivars can be stored for 10 weeks at 0 °C in regular atmosphere without major negative impact on their quality characteristics. Fruits showed a slight (sometimes significant) decrease in FF after storage and a slight or no changes in TSS and TA. In sensory evaluations, ‘Chojuro’, ‘Hayatama’, ‘Hosui’, ‘Kosui’, ‘Yuan Huang’, ‘Er Jang Li’, ‘Er Shi Shinge’, and ‘Shinseiki’ (mostly cultivars characterized by high TSS) obtained highest scores for the overall quality (above 5.0 points in 10 points scale).
Combining Ability Analysis of Ear Characteristics of Sweet Corn Hybrids Suitable for Organic Crop Production
Authors: Chozin Mohammad , Sudjatmiko Sigit
Published: January 2020

Good knowledge of genetic merits governing the inheritance of economic traits is of paramount importance to plant breeders for crop improvement. Objectives of the study were to investigate the genetic nature of ear traits in sweet corn (Zea mays convar. saccharata var. rugosa) based on the general and specific combining ability (GCA and SCA) analysis, and to determine the breeding potential of eight promising inbred lines for the development of new hybrid cultivars well suited for organic production. Thirty-six genotypes (hybrid families) derived from a half diallel cross design were grown under organic crop management at three agro-ecological zones of the tropics. Although the genotypes varied significantly for all the observed ear traits, some of them showed clear inconsistencies in performing husked ear size (length, diameter, and weight), kernel row number, and kernel number per row across environments. The combining ability analysis showed that additive gene action was more preponderance than non-additive gene actions in governing the inheritance of the studied ear traits. The inbred lines: Caps 5, Caps 17A, Caps 17B, and Caps 22 showed their potential as good partners for the improvement of ear performances as to the development of superior sweet corn cultivars for organic production.
Influence of an Arbuscular Mycorrhizal Fungus and Phosphate-Solubilizing Bacterium Inoculation at Stem Cutting Stage on P Uptake and Growth of Impatiens walleriana Plants in an Unsterile Field Soil
Authors: Thangavelu Muthukumar , Arumugam Prabhu
Published: January 2020

Microorganisms play an important role in the propagation and growth of plants. Propagation of plants through stem cuttings is a popular method widely practiced in horticulture and forestry. As the information on the interactive role of arbuscular mycorrhizal (AM) fungi and phosphate-solubilizing bacteria (PSB) in the regeneration and growth of clonally propagated plants is limited, we inoculated stem cuttings of Impatiens walleriana with Rhizophagus fasciculatus and Bacillus megaterium var. phosphaticum individually or in combination in an unsterile Alfisol field soil. The inoculated cuttings were harvested after 45 days of cultivation and various growth parameters and phosphorus (P) uptake were measured. Inoculation with the AM fungus or PSB individually improved plant growth parameters, whereas the dual inoculation did not give synergistic results. Plants inoculated at cutting stage with R. fasciculatus accumulated the highest plant biomass and showed maximum microbial inoculation effect and efficiency of P uptake. Inoculation with the PSB stimulated symbiosis with native AM fungi but a synergistic effect has not been found when both AM fungi and PSB were co-inoculated. It could be concluded that screening for compatibility between microorganisms is essential before selecting the bioinoculants for dual inoculation.
Haploid Induction via In Vitro Gynogenesis in Persian Shallot (Allium hirtifolium)
Authors: Panahandeh Jaber , Farhadi Nasrin
Published: January 2020

Haploid induction using in vitro cultures of unpollinated flowers has been recognized as an important tool to produce homozygous plants for genetic studies and breeding programs. In this study the potential of gynogenic haploid induction in four ecotypes of Allium hirtifolium under different combinations of benzylaminopurine (BAP) with 2,4-dichlorophenoxyacetic acid (2,4-D), or α-naphthaleneacetic acid (NAA) was investigated. Unpollinated flower buds were excised from an umbel 5 to 3 days before anthesis, and cultured onto B5 medium containing 7.5% sucrose and 2 mg·dm−3 BAP with auxin. The experiments revealed that NAA increased the percentage of gynogenesis induction and number of gynogenic embryos per flower in all ecotypes. Somatic organogenesis from basal callus or other floral parts was most effective on the media containing 2,4-D. Plants obtained by gynogenesis were haploid in 70–77% and plants from somatic tissue were mostly diploid.
Economic Aspects in the Raspberry Production on the Example of Farms from Poland, Serbia and Ukraine
Authors: Wróblewska Wioletta , Pawlak Joanna , Paszko Dariusz
Published: January 2020

For many years Poland and Serbia have played the dominating roles in European raspberry production. However, the growing production in Ukraine might threaten the relative stability of the raspberry market for both countries. It is projected that in the coming years Ukraine will strengthen its competitive position in relation to the current industrial raspberry production leaders. This justifies the need to conduct comparative analyses of competitive power, and its contributory factors, including production costs in individual countries. The aim of this study was to compare economic viability and cost-effectiveness in raspberry production, using the examples of selected horticultural holdings in Poland, Serbia, and Ukraine. The production volumes of raspberries in Poland, Serbia and Ukraine were analysed. The levels of costs and the financial results generated in raspberry cultivation for processing purposes were also determined, using the example of horticultural holdings in this countries. The results indicated that the direct costs in Ukraine, were just over half lower those in Poland and Serbia. The raspberry crop yields in the three investigated countries were similar, and the sales prices in the analysed years made it possible to obtain a surplus of receipts over direct costs.
The Effect of Fragmentation and Packaging of Dried Parsley Leaves on Selected Chemical and Microbiological Parameters
Authors: Sikorska-Zimny Kalina , Wójcicka Karolina , Rochmińska Anita , Rutkowski Krzysztof P. , Szewczyk Eligia M. , Lisiecki Paweł
Published: January 2020

Parsley leaves (Petroselinum crispum) have long been known for their organoleptic properties. They are widely used in cuisine all over the world in fresh and dried form and also as pharmaceutical raw material. The presented work assessed if the storage of parsley leaves (as whole leaves or leave pieces) and packaging with PE or Xtend® foils influence the content of selected chemical compounds and the microbiological quality of the product. For this purpose, the leaves were dried, packaged and analyzed after 3 weeks’ storage under room temperature. Neither the degree of fragmentation nor the type of packaging foil affected the content of vit. C and total sugars. Higher content of reducing sugars was obtained in the samples packed in PE foil. Number of detected bacteria did not exceed the safety border. Less bacterial colonies were detected in the material packed as fragmented in the PE foil. No fungal colonies were detected in the leaves packed in the Xtend® foil.
Geometrical Optimisation of a Wing Strut Joint. Part I
Authors: Rośkowicz Marek , Jasztal Michał , Leszczyński Piotr , Wszelaki Szymon
Published: January 2020

This paper provides the result of the geometrical optimisation of a wing strut joint of an aircraft. The objective of the geometrical optimisation was to modify the geometry of the wing strut joint components to meet an optimisation criterion defined as yield strength determined by static tensile testing. The geometrical optimisation was processed on a computer model of the wing strut joint using FEM (finite element method). The design variables assumed in this geometrical optimisation were the load option and boundary conditions of interaction between the wing strut joint components. An analysis carried out as part of the geometrical optimisation was based on proposing modifications to the geometry of the joint features at their maximum stress levels. The geometry optimisation results will be applied in the preparation and performance of validation strength testing of the wing strut joint assembly.
Reliability Assessment of the Transport System, Addis Ababa Case Study
Authors: Gidebo Frehaileab Admasu , Szpytko Janusz
Published: January 2020

The subject of the article is the method of assessing the reliability of the transport system on the example of Addis Ababa in Ethiopia. The transport system and its technical condition, transport infrastructure, organization of the transport system, environment (users, environmental and climatic conditions), and legal provisions, have a significant impact on the reliability of the transport system. The most common means of transport in Addis Ababa is a car (including: taxis and minibuses). An important problem in public transport is the long waiting time for the vehicles, resulting from random events accompanying transportation processes in a defined infrastructure with limited resources. The article presents also the concept of a transport system availability model for developing countries on the example of Addis Ababa in Ethiopia.
Magnetic Metal Memory in the Assessment of the Technical Condition of Crane Girders for the Needs of Safety
Authors: Kosoń-Schab Agnieszka , Szpytko Janusz
Published: January 2020

With the passage of time of exploitation of means of technological transport, their degradation takes place and the threat to operational safety increases. The source of development of fatigue damages of gantry crane girders are areas of stress concentration caused by loads. The subject of the publication is to determine the possibility of diagnosing potential damage sites of the overhead travelling crane (girders) by magnetic metal memory (MPM). As a result of the test with the use of the TSC-7M-16 ferrite magnetometer, stress concentration areas were determined in which processes leading to the reduction of material strength or damage to the material structure may take place. Residual tangential magnetic field distributions and normal components of their gradients were determined. A magnetogram database for the needs of girder diagnostics was created.
New Technical Challenges for Operators
Authors: Woźniak Danuta A.
Published: January 2020

The subject of the article are new challenges for operators of machines and technical devices, in particular in the digital industry. The present reality of the environment in which man lives and works is increasingly complex. This results in certain disorders. Combined with the health, lifestyle and development aspects of medicine, shaping the operator’s reliability, remains an extremely difficult challenge. Modern technologies have enabled older workers to function on the labor market, returning to work after successful treatment of illnesses, that have recently eliminated those group of man from labor market. The above results with the new set of requirements for the development of a reliable operator of various machines and devices. Significant dispersal of men health determinants from biological, environmental, social, cultural, economic and political causes with great difficulties in consolidating specific actions, which are also a challenge for years to come.
Influence of Operating Media on the Parameters of Cement Concrete Intended for Airfield Pavements
Authors: Linek Małgorzata , Nita Piotr , Żebrowski Wojciech , Wolka Paweł
Published: January 2020

The article presents the influence of the suggested operating media on the modification of parameters of cement concrete intended for airfield pavements. Cement concrete contains cement CEM I 42,5, granite grit, fine washed aggregate, water and air entraining as well as plasticizing additive. Analyses included the assessment of changes in mechanical and physical parameters (weight absorbability and water capillary action) of hardened concrete. The observed changes were associated with the internal structure of concrete composite. Based on the obtained results, different influence of the applied operating media on mechanical parameters of hardened concrete was determined.
Application of the Transport Problem from the Criterion of Time to Optimize Supply Network with Products „Fast-Running”
Authors: Małachowski Jerzy , Żurek Józef , Ziółkowski Jarosław , Lęgas Aleksandra
Published: January 2020

The article presents the application in practice of a transport problem with the criterion of time to optimize the supply of store chains. When transporting perishable goods (e.g. dairy products, fruits, vegetables) the most important goal is to minimize delivery time. Shortening the delivery time gives the opportunity to meet the expectations of potential customers, as well as to maintain the functional properties of transported goods.
The Need to Recognize Conditions for River Crossing Operations in the Polish Lowlands by Military Vehicles in the Light of NATO Regulations
Authors: Mądrzycki Przemysław , Burek Monika , Marcinkowska Maria , Rusewicz Marcin , Ostrowski Piotr
Published: January 2020

This paper presents the methods for obtaining the geomorphological information needed to determine the crossing conditions of river beds as well as requirements concerning its interpretation, both historical as well as currently binding and arising from NATO normative documents. The included procedures were analyzed in view of their usefulness in estimating the possibilities of crossing river beds in the Polish lowlands. Detecting the appropriate places to cross big rivers situated in the area of the so-called “eastern NATO flank” appears to be thoroughly essential, especially in the current geopolitical situation.
Neural Networks for Tested MG Artillery Fuses
Authors: Ampuła Dariusz
Published: January 2020

The article presents the information about the usage of artificial neural networks. The automation process of neural networks of the analysed evaluation data results is highlighted. The kinds of MG type artillery fuses are described and the kinds of cartridges’ calibres, in which they are used, are also specified. The way of preparation of databases of test results to computer simulation is described. Building of neural networks determining the main technical parameters and sizes of learning, test and validation sets is characterized. The summary for chosen active neural networks for individual kinds of the analysed MG type artillery fuses is presented. Graphs of learning, values of sensibility indicators and fragments of prediction sheets for the chosen neural networks were shown.
Selected Aspects of Phonoscopic Examinations of Aircraft Records. Part I
Authors: Michalak Sławomir , Malanowicz Alicja , Prusik Tomasz , Paszek Sławomir , Rogala Krzysztof , Stępień Grzegorz , Chybowski Maciej
Published: January 2020

The article presents crucial aspects related to examinations of records from cockpit voice recorders (CVR) and the possible effects of the application of digital correction of these type of records. It also presents the resulting limitations concerning phonoscopic recognition examinations of speakers and determining the content of their utterances. A method for the real reduction of the described limitations was suggested. Part 1 of this paper provides a theoretical introduction to the subject matter under consideration.
Field of Work and Energy Efficiency of Hydrostatic Drives on the Example of Two Tested Systems with Proportional Control of the Cylinder’s Speed
Authors: Skorek Grzegorz
Published: January 2020

The presented test results are an example of simulating determination of the hydrostatic field of the drive system and the energy efficiency of the system as a dependence on the speed and load coefficients of the hydraulic motor used in the system. The issues related to the determination of energy losses and energy efficiency of the hydraulic motor or drive system, which should be determined as dependent on the physical quantities independent of these losses, were also discussed. A Paszota diagram of the power increase in the direction opposite to the direction of the power flow, replacing the Sankey diagram of the power decrease in the direction of the power flow in the hydraulic motor or in the drive system was analyzed.
The Use of Statistical Inference in the Water Supply Network Managing Operation Process
Authors: Piegdoń Izabela
Published: January 2020

Based on operational data concerning the dates of failure of the water supply network, a mean time to failure was performed. The calculations were performed for the main network, distribution network and water supply connections. The hypothesis about exponential working time between failures was verified using the Pearson test (χ2). The presented analyses provide an attitude of further analyses related to modelling the work of renovation and repair teams, associated with the selection of their appropriate number, and also to ensure the required level of safety and reliability of water supply to the consumers.
Reliability as an Element of Process in Managing a Fleet of Railway Vehicles
Authors: Graboń-Chałupczak Marzena
Published: January 2020

Safe and economical devices, which are constantly growing in demand, lead to improvement of operational strategies applied in railway enterprises. Economic analysis and safety, and hence reliability and readiness, are the most important parameters in the operation of railway vehicles. The article presents a strategy for maintaining railway vehicles based on reliability indicators. The strategy was verified based on empirical research in a transport company.
Diagnostics of the Internal Combustion Engines Operation by Measurement of Crankshaft Instantaneous Angular Speed
Authors: Dereszewski Mirosław , Sikora Grzegorz
Published: January 2020

Diagnostics based on measuring of crankshaft instantaneous rotational speed allows precise location of damage to the injection system and detection of external disturbances. Active measurement of instantaneous rotational speed requires use of equipment with high sensitivity, permanent assembly at the ends of the crankshaft and the analysis of a very large amount of data.

Presented method can be used for measurement of torsional vibration of crankshaft, indirectly through simultaneous measurement of the width of the pulses generated by the encoder disks. Momentary, relative displacement of both disks determines the angle of temporary crankshaft twisting. This paper presents first results of pulse width measurement, obtained by using described system.
Use of Data from Satellite Navigation System in Operational and Strategic Management of Transport in Cities
Authors: Oskarbski Jacek , Birr Krystian , Żarski Karol
Published: January 2020

The article presents the possibilities of using data from the Global Positioning System for the development of traffic models and examples of use this data in the transport management. Traffic models are useful tools in planning and evaluation of transport solutions, but also can be used for current, operational transport management.
Commercial Vehicles Incapacity Risk Analysis in the Transport Company
Authors: Niewczas Andrzej , Mórawski Łukasz , Dębicka Ewa , Borucka Anna
Published: January 2020

A proposal was presented to assess the incapacity risk of commercial vehicles performing transport tasks under market conditions. The risk assessment model in the form of cost was used, which is based on the determination of operational efficiency, referring the probable costs of ensuring the reliability of the transport system to the estimated threshold income. It includes costs: incidental repairs, unplanned downtime and resulting from the presumed loss of client’s trust. Operational research were carried out on a group of several dozen vehicles, registering their operational states during several years of use. The results of the research confirmed the suitability of the incapacity risk model for predicting potential expenses for guarantee the vehicle’s continuity of running in the company and to verify the selection of the vehicle brand and the period of use.
Using Fuzzy Logic to Stabilize the Position of a Multi Rotor
Authors: Bęben Karol , Grzesik Norbert , Kuźma Konrad
Published: January 2020

The article is a continuation of research into a stabilization system for the Unmanned Aerial Vehicle of vertical takeoff and landing. The stabilization system was designed on the basis of a fuzzy logic Mamdani type controller. In the framework of the research, the authors built a test stand with a Multi Rotor model, which allows “Hardware In The Loop” testing in real time. The control system was written in the Matlab/Simulink software and implemented to the Arduino microcontroller.