bluuebunny/crossref_metadata_2025 huggingface dataset:
DIFFICULTIES IN IMPLEMENTING THE NATIONAL PLAN OF EQUATORIAL GUINEA FOR ATTRACTING FOREIGN CAPITAL - INVESTOR CONCERNS AND INTERCULTURAL GAPS
Authors: BUVILSKI Eyal
Published: November 2019

This paper analyzes the difficulties of the government of Equatorial Guinea to fulfill an essential objective of its national development framework, i.e., the diversification of the economy through the private sector. This paper begins with a brief history of the country and its economy. The paper then moves to describe the efforts made by the government to attract foreign investors and outlines their concerns on the socio-political environment and business uncertainty. Equatorial Guinea, today one of Africa’s most important oil producers, used to be one of the world’s poorest countries with an economy mainly based on the growth of coffee and cocoa. In the mid-1990s, significant deposits of oil and gas were discovered, leading to a substantial economic change. In the following years, the government, supported by international organizations, decided to launch a national program. Its goals were building modern infrastructure, strengthening human capital, diversifying the economy through the private sector and maintaining efficient governance. As of today, attempts to attract foreign investors have not yet succeeded, and the economy continues to base on oil and gas revenues. The paper concludes by arguing that the way the locals perceive the governmental efforts, and the market conditions is entirely different from the way potential investors view it, and this gap must be bridged.
POLISH-MACEDONIAN COOPERATION OF BORDER SERVICES AS AN EXAMPLE OF INTERNATIONAL COOPERATION TO COMBAT THE MIGRATION CRISIS
Authors: PRZEOR Marta
Published: November 2019

In recent years, Europe has experienced an increased wave of migration from third countries. This phenomenon has become so intense that it has been described as a migration crisis. The article presents the problem of cooperation between the Polish Border Guard and the Police of the Republic of North Macedonia as a country particularly affected by an increased influx of illegal migrants. The weak institutionalisation of Macedonia, the ongoing disputes with Greece and the low level of economic development were the factors which made it impossible for the Republic of North Macedonia to meet the challenges related to the uncontrolled influx of migrants on its own. These factors led to the establishment of cooperation between Poland and the Republic of North Macedonia, which may serve as an example of international cooperation in the fight against the migration crisis.
Analisis Kandungan Vitamin C dari Ekstrak Buah Ara (Ficus carica L) dan Markisa Hutan (Passiflora foetida L)
Authors: Ngginak James , Rupidara Anggreini , Daud Yanti
Published: November 2019

Vitamin C merupakan salah satu senyawa antioksidan yang efektif dalam menangkal radikal bebas. Komponen ini umumnya terkandung dalam buah-buahan dan sayuran. Buah-buahan yang tumbuh liar seperti buah markisa hutan dan buah ara juga mengandung vitamin C. Tujuan dari penelitian ini yaitu untuk mengetahui kandungan vitamin C pada buah Ara (Ficus carica L) dan Markisa Hutan (Passiflora foetida L) yang tumbuh di area Kupang. metode atau Instrumen  yang digunakan dalam penelitian ini yaitu metode iodometri dan metode spektrofotometri UV-Vis. Hasil penelitian menggunakan metode iodometri menunjukkan bahwa pada buah Ara (Ficus carica L) mengandung 4,13 mg vitamin C dan buah Markisa Hutan (Passiflora foetida L) mengandung 5,16 mg vitamin C. Analisis menggunakan Spektrofotometri diperoleh kandungan vitamin C pada buah ara 1,244 mg/L serta kandungan vitamin C pada buah markisa hutan 1,904 mg/L. Dengan demikian dapat dikatakan bahwa buah dari jenis tumbuhan yang tumbuh liar dapat dimanfaatkan sebagai bahan makanan untuk memenuhi asupan vitamin C bagi manusia. Saran bagi peneliti selanjutnya untuk melakukan uji antioksidan dan uji bakteri dari dua jenis sampel.
Automated Answer Scoring for Engineering’s Open-Ended Questions
Authors: Ahmed Muhammad S
Published: November 2019

Audience Response System (ARS), like “clicker,” has proven their effectiveness in students’ engagement and in enhancing their learning. Apart from close-ended questions, ARS can help instructors to pose open-ended questions. Such questions are not scored automatically for that Automated Text Scoring; ATS is vastly used. This paper presents the findings of the development of an intelligent Automated Text Scoring, iATS, which provides instantaneous scoring of students’ responses to STEM-related factual questions. iATS is integrated with an Audience Response System (ARS), known as iRes, which captures students’ responses in traditional classrooms environment using smartphones. iATS Research is conducted to code and test three Natural Language Processing (NLP), text similarity methods. The codes were developed in PHP and Python environments. Experiments were performed to test Cosine similarity, Jaccard Index and Corpus-based and knowledge-based measures, (CKM), scores against instructor’s manual grades. The research suggested that the cosine similarity and Jaccard index are underestimating with an error of 22% and 26%, respectively. CKM has a low error (18%), but it is overestimating the score. It is concluded that codes need to be modified with a corpus developed within the knowledge domain and a new regression model should be created to improve the accuracy of automatic scoring.
Porous Media in the Simulation of Greenhouse Crops Using the Naïves Bayes EM Algorithm
Authors: De la Torre Gea Guillermo Alfonso
Published: November 2019

The porous media approach has become more popular thus, it solves the equations of motion and energy numerically and therefore obtains detailed distributions of temperature and airspeed. However, those models are not allowed to forecast the relationships between the porosity of the volume of the crop with respect to the variables that comprise the climate in natural ventilation greenhouses at the same time in terms of probability. A porous media model of the crop and its approximations were developed and analyzed through non-supervised Bayesian Networks clustering, with the aim of determining the influence of porous media in function to the density crop, over the climate conditions in a natural ventilation greenhouse. Also, a naïve Bayes model unsupervised by the EM algorithm, initialized with random parameters was developed. The resulting model maximized the likelihood of the training data set. The relationships between the pressure drops in the flow limits at the crop were established. Porosity is directly influenced by humidity, temperature and slowly to CO2 concentration. Solar radiation, speed air and slowly the height are inversely influenced with the porosity. Naïve Bayes EM application to a CFD model has been providing a greater understanding of the interactions between the variables.
Sense and Motion: The Barrier Preventing Us from Understanding Motion
Authors: Fu Aaron
Published: November 2019

Currently, scientific study and advancements are at odds with the natural motion systems that surround us. This paper explores how it is our sensory form and the cognition developed upon this sensory form that creates a barrier preventing us from truly understanding the laws of motion. It begins by isolating and defining two distinct forms of information and information processing mechanisms: motion information and integrated information. From this new perspective, it then explains how our sensory system is necessarily based on an integrated information mechanism to support basic survival needs, but is essentially blind to the true features of motion.  The far-reaching effects of this discovery include the limitations within our cognitive mode and the current methods of scientific study and development.
El género Urospermum en el oeste de la región mediterránea. The genus Urospermum in Western Mediterranean
Authors: Berjano Regina , Talavera María , Talavera Salvador
Published: November 2019

El género Urospermum (Compositae) en el oeste de la región mediterránea. Se ha realizado la revisión taxonómica de las dos especies del género Urospermum Scop. en el Oeste del Mediterráneo, U. picroides (L.) F.W. Schmidt y U. dalechampii (L.) F.W. Schmidt. Se aporta descripción del género y de las especies que lo conforman, clave de identificación, e información sobre su corología, ecología, fenología y número cromosómico, así como mapas de distribución de cada especie.
El género Passiflora L. (Passifloraceae) en el Departamento de Lambayeque, Perú. The genus Passiflora L. (Passifloraceae) in Lambayeque Department, Peru
Authors: Esquerre-Ibáñez Boris , Rojas-Idrogo Consuelo , Llatas-Quiroz Santos , Delgado-Paredes Guillermo E.
Published: November 2019

El género Passiflora cuenta con un total de 13 especies hasta ahora determinadas para Lambayeque. Estas especies, algunas con sus taxones infraespecíficos, están incluidas en los subgéneros Passiflora y Decaloba. En el presente trabajo se reportan por primera vez para Lambayeque Passiflora cisnana, P. edulis f. flavicarpa, P. ligularis, P. manicata, P. mathewsii, P. quadrangularis, P. suberosa, P. tarminiana y P. tripartita var. mollissima. De entre ellas, 8 están restringidas a la zona andina del departamento, entre los 1000–4000 m, de elevación, y cinco especies habitan la franja costera. Se proporciona una clave y breves descripciones de cada taxón. Además, se añaden datos corológicos, ecológicos y etnobotánicos que complementan esta investigación.
Nuevo nombre en Rhodanthemum (Compositae, Anthemideae).
Authors: Gómiz García Francisco
Published: November 2019

New name in Rhodanthemum (Compositae, Anthemideae).Palabras clave. Rhodanthemum redieri subsp. soriae, Leucanthemum redieri var. cuneatum, Flora, Taxonomía, Marruecos, Norte de ÁfricaKey words. Rhodanthemum redieri subsp. soriae, Leucanthemum redieri var. cuneatum, Flora, Taxonomy, Morocco, North Africa.
Carduncellus cuatrecasasii G. López (Asteraceae) y Eryngium aquifolium Cav. (Apiaceae), dos nuevas especies para la flora de Portugal
Authors: Pereira Ana Júlia , Porto Miguel , TauleigneA-Gomes Cristina
Published: November 2019

Carduncellus cuatrecasasii G. López (Asteraceae) y Eryngium aquifolium Cav. (Apiaceae), dos nuevas especies para la flora de PortugalKey words. Carduncellus, Asteraceae, Eryngium, Apiaceae, distribution, PortugalPalavras-chave. Carduncellus, Asteraceae, Eryngium, Apiaceae, distribuição, Portugal
Praderas higrófilas de Deschampsion mediae en el subsector Torcalense (sector Antequerano, Málaga, España).
Authors: Pérez-Latorre Andrés V. , Casimiro Soriguer-Solanas Federico , Cabezudo Baltasar
Published: November 2019

Wet meadows of Deschampsion mediae in the Torcal mountain range (Antequerano phytogeographical sector, Malaga, Spain)Palabras clave. Vegetación, flora, humedales, cordillera del Torcal, AndalucíaKey words. Vegetation, flora, wetlands, Torcal mountain range, Andalusia
Notas taxonómicas sobre el género Helictochloa Romero Zarco (Poaceae).
Authors: Romero-Zarco Carlos
Published: November 2019

Taxonomic notes on the genus Helictochloa Romero Zarco (Poaceae)Palabras clave. Helictochloa, Gramíneas, Poaceae.Key words. Helictochloa, grasses, Poaceae
Centaurea beturica E. López & Devesa (Compositae), novedad para la flora andaluza.
Authors: Sánchez Gullón Enrique , López Nieto Eusebio , Devesa Alcaraz Juan Antonio
Published: November 2019

Centaurea beturica E. López & Devesa (Compositae), a new species for the Andalusian flora.Palabras clave. Centaurea, Compositae, Andalucía, Flora ibérica, corología.Key words. Centaurea, Compositae, Andalusia, Iberian flora, corology
Presentación
Authors: Cabezudo Baltasar
Published: November 2019

Presentación del Volumen XXXIX (2014)
Service Consumption in Higher Institution Management: Scale Development
Authors: Ezebor Ogheneovie Michael , Ogunnaike Olaleke Oluseye , Ikpeazu Ugonna Joshua , Folaranmi Oluwatosin , Obidinma Ogechi Gloria , Umeh Chisom Uzoma , Osunwusi Ajibola James , Iwara Nancy Charles
Published: November 2019

This research provides a reconceptualization of service consumption in higher institution. It made use of a multi-stage development scale process, where survey questionnaires were issued out to 50 respondents which include students of Covenant University (B.Sc., M.Sc./MBA). The result of the exploratory and factor analysis shows the multi-stage process. The study showed an evidence of validity and reliability of the scales used. Findings showed that the institution had a positive response to the pre-purchase and service encounter stages while most respondents frowned at the post encounter stage, the institution should put more effort in post encounter stage so as to get a positive response in the nearest future.
Development of the Innovation Infrastructure of Modern Education in the Republic of Tatarstan
Authors: Kodolova Irina Arkadevna , Yusupova Lilia Mirgaziyanovna , Nikonova Tatyana Viktorovna , Khisamova Elvira Distantovna , Mendybayeva Elvira Nurkhatovna
Published: November 2019

The formation of a new efficient education based on knowledge, the development of innovation, the creation of innovation infrastructure, high-tech sectors of the education, small education as the main conductor of mass innovations are becoming priority areas of innovation policy in the Republic of Tatarstan. The article discusses the development of innovative infrastructure of the Republic of Tatarstan. The characteristic of the innovation infrastructure of the Republic of Tatarstan in the modern development of the Modern education is given. Development of innovation infrastructure in the region on the basis of the cluster approach is shown. Some comparative indicators of the innovative development of the Republic of Tatarstan with the regions of the Volga Federal District are given. Management recommendations for the development of innovation at the regional level are developed.
Using Language Experience Approach (LEA) and Talk Massage Symbol Visible (TMSV) Method in Learning of Speech Skill of Indonesia Students
Authors: Abdul K Munir ,   Tarman, Nur Asriani , Harun Muhammad
Published: November 2019

The study was described using language experience approach (LEA) and talk massage symbol visible (TMSV) method in learning speech skill. The results of this study used a descriptive quantitative approach. The research was set at Elementary School, Gowa Regency of Indonesia. The data of this study was speech skills include linguistic and non-linguistic factors. The technique used in data collection is, 1) observation, 2) pre-test. Data analysis includes stages: 1) data collection, 2) data reduction, 3) data presentation, and 4) verification and conclusion. The conclusion of the results of the data analyst was as follows: a) Data obtained from the observation of students categorized above the average value of 75 as many as 20 students or 87%, while those who obtain scores below the average of 75 are 3 students or 13%. The results of these data indicated that the ability of students in speaking skill of learning very satisfying, b) Data obtained from inferential statistical test results obtained t count =22.94 and t table =2.074 obtained data t count > t table or 22.94 >2.074. It concluded that Ho rejected and H 1 accepted. It means that the application of the TMSV method affect in learning of speech skill at Elementary School of Indonesia.
The Students Value Attitude to Healthy Lifestyle
Authors: Mefodeva Marina Anatolevna , Valieva Gulnara Firdusovna
Published: November 2019

The relevance of the investigated problem is caused by the increased attention to the issues of a healthy lifestyle among students in Russia. Promotion of a healthy lifestyle, taking into account the individual interests and preferences of students can be embodied not only in the class but also in the framework of elective programs and courses, that are targeted on a healthy lifestyle. The authors reveal approaches, principles and pedagogical conditions for having a healthy lifestyle in the framework of training in educational institutions. The issues of bad habits influence the development and formation of a value attitude to a healthy lifestyle are considered.
Role of Recruitment and Qualification Centers in Achieving Vocational Qualification of Saudi Woman in the Light of Saudi Vision 2030
Authors: Mohamed Fatma Abdelrazek Mohamed , Rubaie Nawal Abdulaziz Mohamed Al
Published: November 2019

This study aims to investigate the role of recruitment and qualification centers in achieving vocational qualification for Saudi women in the light of Saudi Vision 2030 and to identify the obstacles that limit the work of recruitment and qualification centers and suggested solutions are made for the development of these centers. Survey descriptive approach was utilized through designing 58-item questionnaire divided into five domains. The sample comprised (87) of the employees of recruitment and qualification centers in Riyadh. The results indicated that the most important roles of recruitment and qualification centers are the establishment of exhibitions that offer craft products prepared by Saudi women, investigating the vocational abilities and tendencies of Saudi women, and the sensitization of Saudi women to the job ethics and the importance of commitment to these ethics. The most important obstacles that limit the development of these centers are the low capacity for all applicants, the low spread of recruitment and qualification centers across the Kingdom. The study recommended the need to employ specialized cadres to increase the efficiency of recruitment and qualification centers, increasing the support for recruitment and qualification centers for Saudi women, and briefing Saudi women to the services provided by these centers.
The Challenges of Higher Education Institutions: Including Digital Skills and Preparing Reflective Learners
Authors: Vokshi Mjellma Carabregu , Ben Youssef Adel , Toçi Valentin , Dedaj But
Published: November 2019

The higher education institutions in the study programs and during the learning and teaching process should ensure the inclusion of digital skills. The digital skills should be delivered to students along the three pillars of the European Qualification Framework. If the higher education institutions fail to integrate and deliver the digital skills in the curriculum will devastate also the employment perspectives of its graduates. The information itself does not represent knowledge and today students have access to a large amount of information. In the long run this trend may diminish the focus skills of students and it poses a risk for creation of reflexive learner instead of the reflective ones. Thus, it is important that the teaching methodologies, which integrate various digital utilities to help students develop their reflective thinking instead of reflexive one.
Enhancing Biology Students' Academic Achievement and Attitude Through Self-Regulated Learning Strategy in Senior Secondary Schools in Delta Central Senatorial District
Authors: Oghenevwede Oyovwi Edarho
Published: November 2019

This study focused on enhancing biology students' achievement and attitude through Self-Regulated Learning Strategy in secondary schools in Delta Central Senatorial District. The study adopted the quasi-experimental pre-test, post-test control group design. Four research questions and four research hypotheses were formulated and raised to guide the study. The population of the study was all the biology students in senior secondary school II (SS II) in all the government-owned public secondary schools in Delta Central Senatorial District with an estimation of six thousand, four hundred and twenty-one students (6,421). A sample of two hundred and forty-five (245) senior secondary schools II students randomly selected from four (4) public mixed secondary schools was used for the study. The Simple Random Sampling Technique was adopted to draw the sample. The instruments used for data collection were the Biology Achievement Test (BAT) and Biology Attitude Questionnaire (BAQ). BAT and BAQ were validated by I Measurement and Evaluation and Biology teachers that have taught biology for more than ten (10) years. The reliability of BAT and BAQ were established using Kuder-Richardson formula 21 and Cronbach Alpha which yielded a coefficient of internal consistencies of 0.75 for BAT and 0.80 for BAQ respectively. Data were collected by administering the biology achievement test (BAT) and biology attitude questionnaire (BAQ) as pre-test and post-test. The data obtained were analysed using mean, standard deviation Analysis of Variation (ANOVA) and Analysis of Covariance (ANCOVA). The result shows that self-regulated regulated learning strategy significantly enhanced students' achievement in biology compared to the lecture method; there was no significant difference between the mean achievement score of male and female students taught biology using self-regulated learning strategy; there was a significant difference between the mean attitude score of students taught using self-regulated learning strategy compared with those taught with lecture method in favour of students taught using the self-regulated learning strategy and there was no significant difference between the mean attitude score of male and female students taught biology using self-regulated learning strategy. Based on the findings it was concluded that self-regulated learning strategy significantly enhances students' achievements and attitudes in biology. It was therefore recommended that biology teachers should adopt the strategy in teaching biology at the secondary school level and that biology teachers should be trained on how to use the skills of self-regulated learning strategy effectively.
The Role of Educational Institution in Fostering Entrepreneurship Development in Nigeria
Authors: Aribaba F. O. , Ahmodu O. A. , Adedokun J. O. , Yusuff S. A. , Omada V. I.
Published: November 2019

The study examines the role educational institution plays in fostering entrepreneurship development in Nigeria. The study employed survey research design using primary source of data through the administration of structured questionnaire on twelve (12) selected Federal Universities from the total population of forty-three (43) Federal Universities as approved by the National Universities Commission (NUC, 2019). This was determining through the use of multi-stage sampling technique. The multi-stage sampling techniques are simple ransom and quota sampling techniques. The techniques were used to draw the sample size of five-hundred and four (504) respondents from sampled Universities. The total number of questionnaires that was returned is four-hundred and ninety-nine (499). Regression statistics and Analysis of Variance revealed the coefficient and P-value of vocational centre (0.154069951; P=0.000495<0.05); entrepreneurship exhibition (0.368947844; P=9.03E-18>0.05); professional entrepreneurs (0.162502515; P=4.9E-05>0.05) and seed capital (0.289112176; P=3.24E-11>0.05) respectively. This was an indication that there was a positive significant exists between the explanatory variables with entrepreneurship development in Nigeria at 5% level of significant. The implication is that the federal government should not only empower the youths but to invest in youth entrepreneurship because the youths are the future of the country. Based on these findings, the study therefore recommends that educational stakeholders should be monitoring the entrepreneurship activities in Nigerian Universities. They should also dwell more on practical training for students irrespective of their vocational area of study; and introduce some benefits to well deserving creative students in order to enhance the entrepreneurial culture among the students.
Museum Preserves in the Sphere of “Cultural Tourism”: Through the Example of the Cultural Preserves of Tatarstan
Authors: Timofeeva Lyudmila S. , Akhmetova Albina R. , Galimzyanova Liliya R. , Nizaev Roman R. , Nikitina Svetlana E.
Published: November 2019

The article studies the existence experience of historical cities as centers of tourism development as in the case of Elabuga. The city of Elabuga is among the historical cities of Russia. The major role in the development of the city as a tourist center is played by the Elabuga State Historical-Architectural and Art Museum-Reserve. The object of the research in the article is Elabuga as a medium-size historical city. The subject of the research is the activity of the museum-reserve which contributes to the preservation and development of the historical look of Elabuga and increases its attractiveness to tourists. The tourism attractiveness of Elabuga is obtained primarily through the presence of the perfectly preserved historical center of the city with the blocks of integral buildings of the 19th century. The Elabuga State Historical-Architectural and Art Museum-Reserve, which emerged in 1989, is currently an object of historical and cultural heritage of federal importance. Museum-reserves with their significant territories and rich historical, cultural and natural heritage have unique resources for the implementation of large partnership projects. Such projects are not only aimed at attracting a wide range of tourists, but also stimulate interest in the reserve from the business elite, municipal and regional authorities. The most famous example is the Spasskaya Fair which revived in 2008 in Elabuga. It was held in the city since the second half of the 19th century, and was widely known throughout Russia. The process of the revival and successful development of the fair can be viewed as the creation of a special tourist event contributing to the formation of new and currently important tourism products.
Cultural Diplomacy of France: Essence, Main Directions and Tools
Authors: Adleiba Emil Gochaevich , Sakaev Vasil Timerjanovich
Published: November 2019

The article is devoted to the study of “cultural diplomacy” of France in recent history. The relevance of the topic is conditioned by the fact that states use new, non-leverage levers of influence more and more, striving to spread their values and culture in the world to expand and strengthen their presence in the international arena. The French Republic, in order to revive its former greatness, has accelerated the activities of its institutions over the past decades, which can be interpreted as the manifestations of “soft power” in general, and “cultural diplomacy” in particular. The increase of the French language, culture and history status among the population of Europe, America, Africa and the Middle East is becoming an increasing priority task of the state foreign policy. This, in particular, is evidenced by the statements of the French leadership, as well as the reforms carried out in internal structures to increase the effectiveness of its “cultural diplomacy” concept implementation. The authors of the article concluded that over the past ten years, France has not only stepped up and renewed its cultural and partnership relations around the world, but also opened up new opportunities for the dissemination of information and cooperation, adapting to the diverse expectations of the audience, taking into account, first of all, the factors of multilateral diplomacy and interculturalism. This, in its turn, makes it possible to expect the increase of France foreign policy potential in the international arena. The obtained results are consistent with the conclusions of a number of researchers and expand the existing ideas about the nature, the application of “cultural diplomacy” approaches and the specifics of its influence in the world. The reliability of the study is based on a wide range of published materials, and the obtained results make a significant contribution to knowledge expansion about this problem. At the end of the article, on the basis of France experience study, they determined the potential opportunities for the development of “cultural diplomacy” of Russia.
Academic Impact of Global Ranking of Higher Education Institutions in Kosovo
Authors: Krasniqi Armand
Published: November 2019

Globalization in higher education has highlighted the obligation to provide information on the level of academic quality provided by higher education institutions. This has resulted in the design of university ranking systems, respectively in creating of global and regional ranking tables. This information can and should be a contribution to the advancement of quality education in the country. Kosovar institutions that are competent in this field should show the courage to, in addition to providing information from international rankings, establish a credible national system for providing data, respectively the ranking list of higher education institutions in the country. This may help to identify important issues and information that will serve to create sustainable academic policies. This paper is exclusively based on empirical data provided by a questionnaire. As such it analyzes whether the ranking of higher education institutions in our country are needed and what will be the impact of academic quality measurements. These data enable the country's institutions to measure the public interest in the rate and dynamics of higher education development in the country, identifying the direction of university development. In these circumstances there should be no doubt about the obligation to provide this data, and only on the basis of it, the harmonization of public policies and legislation on quality in education and its role in the market.
The Possibility of Applying Acoustic Emission Method for Monitoring Lathing Process
Authors: Dudzik Krzysztof
Published: November 2019

Nowadays acoustic emission (AE) method is used in many fields of science, including in the diagnosis and monitoring of machining processes such as turning, grinding, milling, etc. Monitoring of turning process allows ensuring stable conditions of treatment. Stable conditions of turning process have a great impact on the quality of the surface. This is especially important during finishing treatment.

The research was carried out on a universal ZMM-SLIVEN CU500MRD lathe centre-using tool with removable insert SANDVIK Coromant WNMG 080408 – WMX Wiper. Lathing process was performed on the shaft of 74 mm in diameter made of S235 steel.

The research was carried out at constant cutting speed v = 230 m/min. Changed parameters were feed f = 0.1; 0.2; 0.4 mm/rev and cutting depth ap = 0.5; 0.75; 1 mm. In the research was used a set of acoustic emission Vallen System. The kit includes: 4 channel signal recorder AMSY 6, two measurement modules ASIP-2/S, preamplifier with a frequency range 20 kHz – 1 MHz and the strengthening of 34dB and AE signal measurement sensor type VS 150M, with a frequency range 100 – 450 kHz. During the study, the acoustic emission (AE) generated during the lathing process were recorded parameters e.g. amplitude, number of events – hits, the effective value of the signal (RMS).

The test results indicate, that the higher instability of the process was during turning with parameters: ap = 0.75 mm and f = 0.1 mm/rev. The study can be the basis for the use of acoustic emission method for monitoring lathing process to ensure stable conditions of that process and the same to obtain a high quality surface.
Study of Bypass Ratio Increasing Possibility for Turbofan Engine and Turbofan with Inter Turbine Burner
Authors: Jakubowski Robert
Published: November 2019

Current trends in the high bypass ratio turbofan engines development are discussed in the beginning of the paper. Based on this, the state of the art in the contemporary turbofan engines is presented and their change in the last decade is briefly summarized. The main scope of the work is the bypass ratio growth analysis. It is discussed for classical turbofan engine scheme. The next step is presentation of reach this goal by application of an additional combustor located between high and low pressure turbines. The numerical model for fast analysis of bypass ratio grows for both engine kinds are presented. Based on it, the numerical simulation of bypass engine increasing is studied. The assumption to carry out this study is a common core engine. For classical turbofan engine bypass ratio grow is compensated by fan pressure ratio reduction. For inter turbine burner turbofan, bypass grown is compensated by additional energy input into the additional combustor. Presented results are plotted and discussed. The main conclusion is drawing that energy input in to the turbofan aero engine should grow when bypass ratio is growing otherwise the energy should be saved by other engine elements (here fan pressure ratio is decreasing). Presented solution of additional energy input in inter turbine burner allow to eliminate this problem. In studied aspect, this solution not allows to improve engine performance. Specific thrust of such engine grows with bypass ratio rise – this is positive, but specific fuel consumption rise too. Classical turbofan reaches lower specific thrust for higher bypass ratio but its specific fuel consumption is lower too. Specific fuel consumption decreasing is one of the goal set for future aero-engines improvements.
Analysis of the Application of Distributed Propulsion to the AOS H2 Motor Glider
Authors: Kuźniar Michał , Orkisz Marek
Published: November 2019

The paper describes the selection of a distributed propulsion for the AOS H2 motor glider (selection of engines, their number, and propellers) and determination of its performance. This analysis is related to the research conducted on environment friendly and hybrid propulsions in various research centres. The main aim of the analyses conducted is to increase the performance of vehicles powered by electric motors. The batteries have a low density of energy, i.e. the ratio of mass to cumulated energy. Instead of a battery set, it is possible to apply a hybrid-electric system, where the combustion engine works as a generator or an electric-hydrogen generator, where the hydrogen cell supports a small set of batteries. One of such flying vehicles, fitting in this trend, is the AOS H2 motor glider built at the Rzeszow University of Technology in cooperation with other universities. It is a hybrid aircraft, equipped with a hydrogen cell, which together with a set of batteries is a source of electricity for the Emrax 268 electric motor. To increase the vehicle's performance (the range and flight duration), it is possible to use a distributed propulsion. This type of propulsion consists in placing many electric motors along the wingspan of the aircraft. Appropriate design of such a system (propeller diameters, engine power, number of engines) can improve the aerodynamic and performance parameters of the airframe. An analysis of the performance for the selected flight trajectory for this propulsion variant was conducted and compared to the performance of the AOS H2 motor glider equipped with traditional propulsion. The consumption of hydrogen was also determined for both systems. The results obtained were presented in the diagrams and discussed in the conclusions.
Digital Recording Devices is Element of Safety of the Road Transport
Authors: Rychter Marcin , Sułek Piotr
Published: November 2019

The duty of applying recorders in the road transport was implemented in states of the European Union on regulations (EWG) no. 3820 / 85 on harmonizations of some social welfare legislation referring to the transport, which was changing with regulation (EWG) no. 3821/85 on recorders applied in the road transport. The duty of implementation of the digital tachograph is also considered in the context of improving road safety. Through the analysis of the records of the registering devices can be defined in each specific case of speeding by more than the allowable value in the area. Technical requirements for your device recorded in the resolution, which defines the main parameters, are measured, among things other, the traversed path length of the car, speed, time driving, other periods of work, politeness of the driver and the correct operation of the check authorized for those authorities. At present led Regulation (EU) No 165/2014 of European Parliament establishing requirements concerning structure, checking, installation, use and repairs of tachographs and their building blocks is implementing the second generation of the digital tachographs connected with the device GNSS (Global Navigation Satellite System). Organizing the early detection from a distance is showing data officers from the digital tachograph and information concerning mass and mass falling on the wasp of the entire team of vehicles. Experience in work, economic pressures and competition in transport has led the drivers through a transport company in the event noncompliance, and in particular, in relation to the driving time and breaks. This article contains responsibilities after part rest on the drivers of vehicles takes the issues of system security and optimum performance of recording devices.
A Method for Energy Consumption Assessment by Operation of BEV’s in Different Road Conditions
Authors: Sitnik Lech J.
Published: November 2019

For the third time in the history of humankind, it is trying to implement e-mobility. There is a reasonable hope that this attempt will succeed this time. E-mobility is generally regarded as a zero emission. This sentence can only be true in a very small scope, as only in relation to selected parameters and in a very limited its dimension. The situation can change radically. If it will be take into account, the emissions in the production of electricity is necessary for the movement of this type of vehicles Second problem is the energy use amount. We know today that the energy consumption of electric cars, especially in long-term operation is too big. This general knowledge is not confirmed by research results. Both relevant databases and methods of their analysis are missing. This is an unfavourable situation because it is not possible to verify the effects of various changes introduced e.g. in the construction or technology of cars. This publication can be included in those in which it is shown how to change this situation.

The analysis of the results of long-term car use can be used as a verification of various development works, especially in e-mobility, which is only just starting. In the future, it will be need to create the appropriate “big data” databases and a number of tools to analyse the data collected there.
Measuring Instruments Used at the Research and Accuracy of Defining the Efficiency of Drive Systems
Authors: Skorek Grzegorz
Published: November 2019

The aim of the article is to look at the possibility of accurately determining the energy efficiency of drive systems thanks to the use of high quality sensors and measuring instruments. The types of measuring instruments used on the test stand are presented. The results of experimentally determined efficiencies and simulationally determined efficiencies of two hydrostatic systems with throttling control were compared, which are fed with a constant capacity pump. The choice of the analysed systems is not accidental. There is still a view in the literature about limited possibilities of energy systems with proportional control. The research stand was very carefully designed and made. The applied measuring instruments were characterized by high accuracy of measurements. The issues related to the determination of energy losses and energy efficiency of the engine or drive system, which should be determined as dependent on the physical quantities independent of these losses, were also discussed. For laboratory verification, measurement methods were developed, the test stand was adapted and automated. It consists of tested system and loaded system. The measurements during the tests were saved on the computer disk. In order to be able to compare the efficiency of the overall system with the efficiency obtained on the basis of the simulation, coefficients ki determining the energy losses of individual elements of the system were calculated. The research showed a large convergence of the mathematical description of energy losses in the elements of the system and the efficiency of the system with reality. The mathematical model enables accurate simulation determination of the energy efficiency of the system at each point of its field of operation, i.e. at each speed and load of the controlled hydraulic motor. The range of motor speed and load variation can also be accurately determined simulationally.
Simulations of Hot-Gas Flow in Internally Cooled Cascade of Turbine Vanes
Authors: Sznajder Janusz
Published: November 2019

An experiment in cooling of gas turbine nozzle guide vanes was modelled numerically with a conjugate viscous-flow and solid-material heat conduction solver. The nozzle vanes were arranged in a cascade and operated in high-pressure, hot-temperature conditions, typical for first turbine stage in a flow of controlled-intensity, artificially-generated turbulence. The vane cooling was internal, accomplished by 10 channels in each vane with cooling-air flow. Numerical simulations of the experiment were conducted applying two turbulence models of the k-omega family: k-omega-SST and Transition SST implemented in the ANSYS Fluent solver. Boundary conditions for the simulations were set based on conditions of experiment: total pressures and total temperature on inlet to cascade, static pressure on the outlet of the cascade and heat flux on the surface of cooling channels. The values of heat flux on the surface of cooling channels were evaluated based on Nusselt numbers obtained from experiment and varied in time until steady-state conditions were obtained. Two test cases, one with subcritical outlet flow, and another one, with supercritical outlet flow were simulated. The result of experiment – distributions of pressure, surface temperature, and heat transfer coefficients on the vane external surface were compared to results of numerical simulations. Sensitivity of the vane surface temperatures and heat transfer coefficients to turbulence models and to boundary-condition values of parameters of turbulence models: turbulence energy and specific dissipation of turbulence energy was also studied.
Estimation of Random Friction Forces on the Microbearing Cooperating Surfaces
Authors: Wierzcholski Krzysztof , Miszczak Andrzej
Published: November 2019

Presented paper concerns a new mathematical form of stochastic theory of hydrodynamic friction forces occurring on the real cooperating surfaces in computer micro bearing fan and computer microbearing in hard disc driver HDD. This paper presents particularly a new-review of stochastic analytical considerations realized by the authors for friction forces estimation during hydrodynamic lubrication performed on the ground of the measurements of the gap height between two roughness surfaces. After numerous experimental measurements directly follows that the random unsymmetrical increments and decrements of the gap height of computer microbearings have important influence on the load carrying capacities and finally on the friction forces and wear of cooperating surfaces. The main topic demonstrates the influence of the variations of expectancy values and standard deviation of the computer microbearing gap height on the friction forces occurring in the HDD and microbearing fan. Moreover, it is observed the evident connection between the apparent dynamic viscosity and the features of the microbearing superficial surface. Hence after abovementioned remarks follows the corollary that the influence of the microbearing gap height stochastic variations connected with the surface roughness tend moreover indirect from the apparent viscosity into the friction forces variations. The synthetic, complex elaboration of obtained results indicates finally the influence of the random roughness in micro and nano level of microbearing surfaces on the friction forces distribution. A new results contained in this paper are obtained taking into account 3D variations of dynamic viscosity of the non-Newtonian lubricant, particularly variations crosswise the film thickness and influences of surface superficial layer features on the lubricant apparent viscosity.
Maritime Communication and Sea Safety of the Future — Machine - Type 5G Communication Concept
Authors: Gajewska Małgorzata
Published: November 2019

The article presents the concept of a system based on 5G network and M2M communication increasing maritime safety. Generally, the focus was on presenting a proposal for a hierarchical, hybrid, cooperative system with M2M communication coordinated with BAN networks. The possible applications of M2M communication at sea were also presented.
Expectativa de Enseñanza de la Ética en Educación Superior
Authors: Cabrera Benavides Lucero Liliana , Mora Granja Jairo Alexander
Published: November 2019

Expectativas de enseñanza de la ética surge de la investigación “Estado de la Enseñanza de la Ética en Educación Superior” 2017-2018 Caso programas de Licenciatura de la Universidad de Nariño.El artículo desde la parte empírica describe las expectativas de los docentes  y estudiantes respecto a la enseñanza de la ética, para lo cual se realizaron entrevistas. Entre los resultados se encuentra que tanto docentes y estudiantes esperan que un curso de ética relacione la teoría con la práctica.
Solidarity economy and environment: alliance between women for a decent environment among localities of Coacoatzintla, Ver.
Authors: Arellano Olivo Claudia Lorena
Published: November 2019

La realidad socioeconómica de tres localidades rurales campesinas del municipio de Coacoatzintla ha provocado migración de los hombres jefes de familia con la necesidad de conseguir empleo en otros espacios, la consecuencia de este fenómeno, entre muchas otras, es cambio de rol que viven  las mujeres. En respuesta a dicha situación, la organización de las mujeres campesinas a través de la economía solidaria es una alternativa que responde a sus necesidades sociales, económicas tomando en cuenta las prácticas socio-culturales (cooperación, organización, trueque, tequio,etc.), y las socio-ambientales (Respeto a la naturaleza, uso responsables de los recursos naturales).
Aproximación al régimen disciplinario de los trabajadores de las empresas de servicios públicos domiciliarios
Authors: Carvajal Renza Boris
Published: November 2019

El régimen laboral aplicable en Colombia a las personas vinculadas a las empresas de servicios públicos domiciliarios ha sido materia de controversia; de allí que no exista en la actualidad unidad de criterio al respecto. En este sentido se discute si son trabajadores particulares, servidores públicos, o servidores públicos con régimen de derecho privado. El asunto es de capital importancia, porque dependiendo de la categorización que se adopte, se generarán relevantes consecuencias jurídicas, entre ellas si les es extensivo el Código Disciplinario Único (Ley 734 del 2002), si son disciplinables por la Procuraduría General de la Nación, o si pueden ser cobijados por determinado régimen de inhabilidades o incompatibilidades. Con fundamento en la anterior premisa, este artículo aborda los planteamientos más relevantes sobre el tema en el que tiene especial protagonismo la Corte Constitucional, la cual no ha estado exenta de observaciones. El objetivo es ofrecer diferentes perspectivas que puedan servir de marco orientador en un campo sensible que reclama mayor profundización.