BEAT PATTERNS OF A PHYSICAL INCLINED PENDULUM AND THEIR REAL-WORLD APPLICATION

Volume 75, Mar 2019
doi: 10.21506/j.ponte.2019.3.3
View Abstract Hide Abstract   |   Download PDF
Abstract: The paper develops dynamic and mathematical models of the physical inclined pendulum. The motion equations of a pendulum are solved by a stage-by-stage consideration method. The motion laws and amplitudes of oscillations, coordinates of the stagnation zone and their graphical representations are analyzed and discussed. The expressions of oscillation characteristic: period, amplitude, decrement of damping oscillations, quality of a pendulum are determined and considered depending on the angle of inclination and length of the thread, radius of the pendulum ball, rolling friction coefficient and other system parameters. For practical applications, working formulas have been found for determining the rolling friction coefficient at rest, the dynamic rolling friction coefficient and the rolling friction coefficient at the stagnation zone. As an example, the values of the coefficient of rolling friction of solid steel on steel are given. The investigation results can be used to develop new educational laboratory work, to design and create new instruments for determining rolling friction coefficients used in mechanical engineering.

Author(s): Zharilkassin Iskakov

Higher education practitioners assessment literacy levels: A logical basis for its positioning in relation to critical theory, critical reflection, and professional development

Volume 75, Feb 2019
doi: 10.21506/j.ponte.2019.2.3
View Abstract Hide Abstract   |   Download PDF
Abstract: This theoretical enquiry was geared towards the formation and advancement of a scholarly discourse in the context of higher education practitioners levels of assessment literacy. Despite having recently gained an unprecedented level of currency among academics, assessment literacy, as a higher education professional attribute, remains largely not theorised. The related scholarly thought has mostly evolved around a particular emancipatory discourse. Such thinking is also underpinned by a certain degree of subservience to the conventional notions of professional ethics and morality that subsumes assessment literacy. The emergence of the higher education transformation discourse has also resulted in trepidations felt at individual and institutional levels, further confounding assessment-related professional attributes as a ripple effect. A conceptual consolidation of the idea of assessment as a professional literacy, together with its associated constructs, is therefore mooted here. The practice of assessment-literacy-related professional development subscribing to the notions of critical theory, critical reflection, and 21st century skills, was hence philosophically substantiated, so that such practices assume a higher degree of legitimacy and credence. Assessment, the single most dominant student experience, as this article concludes, needs significant philosophical reaffirmation. Such a reaffirmation forms the basis for the continuance of progressive discourses, and is hence vital in the context of advancement of assessment literacy as an aspect of higher education professional literacy.

Author(s): A. KRISHNANNAIR, S. KRISHNANNAIR, S.N. IMENDA


MYOCARDIAL FUNCTIONS IN OBESE CHILDREN WITH SUBCLINICAL HYPOTHYROIDISM

Volume 75, Feb 2019
doi: 10.21506/j.ponte.2019.2.11
View Abstract Hide Abstract   |   Download PDF
Abstract: Childhood obesity is an important health problem representing a major public health concern worldwide. An isolated elevation of Thyroid Stimulating Hormone (TSH) with normal levels of thyroid hormones is frequently found in obese children. It has been named Isolated Hyperthyreotropinemia or Subclinical Hypothyroidism (SCH) and may be considered a consequence of obesity. SCH is related to impairment of both systolic and diastolic myocardial function in the adult population. Objective: Aim of this study is to evaluate whether SCH affects myocardial function in childhood obesity. Material and Methods: We examined 48 obese children and adolescents with SCH and 70 obese children and adolescents with normal TSH. Doppler echocardiography was performed in order to evaluate myocardial function to all cases in both groups. Results: Global systolic function was evaluated with, ejection fraction (EF) and compared between groups. Right ventricular global systolic function and pressure were significantly decreased in SCH group. LV mass index was significantly higher in SCH group (p=0.041). Global systolic function was evaluated as EF and no difference was found among the groups. RV global longitudinal function was evaluated with TAPSE measurement and a significant decrease was observed for this value in SCH group compared to the other group (p=0.0015). MAPSE lateral and MAPSE septum which are important for showing LV longitudinal function in SCH group decreased significantly (p=0.004 and p=0.002). Similarly, tissue Doppler imaging (TDI) and peak systolic movement were decreased in SCH group (9,6±1,8 cm/s vs 11.5±1.7 cm/sn; p=0.03). In addition, significant changes were observed in both systolic and diastolic functions in the left ventricle in SCH group. Conclusions: These results suggest the possible involvement of cardiac functions in obese children with SCH.

Author(s): Atilla Cifci, Mehmet Boyraz


Indigenous people social function and building character education (Study in Kampar Indigenous people to sacred grove in Kenagarian Rumbio, Riau Province)

Volume 75, Feb 2019
doi: 10.21506/j.ponte.2019.2.4
View Abstract Hide Abstract   |   Download PDF
Abstract: This paper explains the function and social in the character education building from environmental awareness value perspective in Kampar indigenous people for the sacred grove or hutan larangan in Kenagarian Rumbio, Riau Province. Data collection applied qualitative research method in form of observation, interview, and documentation. The observation research scopes are village condition, sociocultural and economic activity of the people, village elder or ninik mamak, public figure, the trader, the local society with in-depth interview, and include snowball sampling to maximize the data collection activity. The documentation activities are a report from village administration, traders report, or literature works from the expert. Data analysis applied Miles & Huberman analysis method, such as data reduction, data display, verification/conclusion and triangulation data validation, member checking, and expert opinion. There are three social functions or folklore practiced in the building of character education through informal education in indigenous people, petatah petitih or proverbs and sayings channel, pantun expression, and wise advice from ninik mamak or adat chief. Social capital existence from ninik mamak in development of character education through role model from ninik mamak as social behavior, an awareness in the indigenous people social life, and religious life of Kampar indigenous people based on true value. \\r\\nKeywords: Education, Character, Sacred Grove, Indigenous People and Kampar

Author(s): Dr. Ahmal, Nana Supriatna, Kokom Komalasari, Erlina Wiyanarti


DIET OF BARN OWL (TYTO ALBA) DETERMINATION FROM REGURGITATED PELLETS IN SOUTHEASTERN ALGERIA, COUPLING THE CLASSICAL APPROACH WITH THE EDNA ANALYSIS

Volume 75, Feb 2019
doi: 10.21506/j.ponte.2019.2.5
View Abstract Hide Abstract   |   Download PDF
Abstract: The current study deals with the Barn Owl (Tyto alba) diet from two Saharan localities in Ouargla, southeastern Algeria. This investigation was based on the owl regurgitated pellets contents, coupling the classical techniques, which consists of visual identification of prey specimens, and the environmental DNA metabarcoding method, applied to identify mammals and insects items. A total of 234 pellets with 456 specimens were analyzed. The identified preys belong to four classes, eight orders, 15 families and 26 species. Birds largely dominated (72.9% ≤ RA ≤ 89.6%) and the highest abundances were recorded by Streptopelia sp. (37.1 % ≤ RA ≤ 48.1%) and passer sp. (29.1% ≤ RA ≤ 33.02%). They are followed by rodents (9.4% ≤ RA ≤ 20.9%), mainly represented by Mus musculus (3.8 % ≤ RA ≤ 10.6%). Reptiles came in the third position (RA = 4.6%): among the consumed species were Gekkonidae sp. (RA= 3.7%) and Lacertidae sp. (RA = 0.8%). Insects constituted a negligible portion of the barn owl diet (0.9% ≤ RA ≤ 1.7%). The most consumed insects for each locality were Gryllotalpa sp. (RA = 0.85%) and Brachytrupes megacephalus (RA = 0.28%). The evenness index (E = 0.6) revealed that Tyto alba adopts a generalist and flexible feeding strategy. The DNA-based method allowed identifying seven prey species (one mammalian and six insects), out of which five (Pimelia sp., Lilioceris sp., Carpophilus sp., Attagenus pellio and Calliphora vicina) have not been confirmed by the classical method. Brachytrupes megacephalus and Mus musculus were identified by both techniques. Our findings provide baseline knowledge on bird diet species, using two complementary approaches. This constitutes vital elements to support ongoing studies on species management and conservation

Author(s): Amira Hadj Benamane, Samia Bissati-Bouafia, Khaled Amrani, Johan Pansu, François Pompanon, Salaheddine Doumandji, Makhlouf Sekour


Improvement of hydrodynamic and physico-chemical properties of sandy soil by the mud of the dam of Foum el gherza (Biskra-Algeria)

Volume 75, Mar 2019
doi: 10.21506/j.ponte.2019.3.1
View Abstract Hide Abstract   |   Download PDF
Abstract: The objective of this study is the improvement of physical, chemical and hydrodynamic properties of sandy soil and valorization of the mud. The experiment is made out in pots of vegetation with increasing amounts of the mud and in presence of a barley crops. The results show a remarkable effect of the mud on the sand amended compared to the control. The addition of the mud to sandy soil increased the holding capacity and the useful reserve and decreased the infiltration. The improvement of the hydrous properties resulting from a reduction in the macroporosity and increase in microporosity as well as the improvement of the fertility of soil, have a direct consequence on the development of plant. Indeed, the growth of barley (height of stem and tiller number) and dry matter yield are clearly improved according to amounts of the mud. The EC of the soil increases slightly with the increase in the amounts but it is not significant except with the treatment 100% mud. Through the statistical results, the treatment 15% represents the best amount.

Author(s): Ali MASMOUDI, Halima MANCER Djamel BOUCETTA


The Influence of Leadership Empowerment on the Teachers Organizational Citizenship Behaviour

Volume 75, Mar 2019
doi: 10.21506/j.ponte.2019.3.2
View Abstract Hide Abstract   |   Download PDF
Abstract: The performance of Sekolah Menengah Pertama (Junior High School: henceforth abbreviated as SMP) mostly cannot be categorized as productive in Indramayu Regency, West Java, Indonesia. If such a condition does not get a serious attention, there will be manifold school agendas that cannot be achieved so that the school cannot be productive. This study examines the teacher's improvement of Organizational Citizenship Behaviour (henceforth abbreviated as OCB) through principal's Adaptive Transformative Leadership, Organizational Commitment, and Job Satisfaction. The population of this study is 2697 people. The sample is 367 teachers. The data of this study are in form of teacher's perception about principal's leadership, organizational commitment, job satisfaction, and organization citizenship behaviour which are gained from questionnaire and documentation study. The data have been analysed by implementing ANOVA and multiple linear regression. The current study applied Statistical Package for Social Science (SPSS) 22.0. The result of this study indicates that a) the adaptive transformative leadership correlates by 0.719 with teacher's OCB. It indicates that the higher adaptive transformative leadership value means the higher level of teacher's OCB with 51% determination. b) The organizational commitment correlates by 0.675 with teacher's OCB with 46% determination. c) The job satisfaction correlates by 0.694 with teacher's OCB with 48% determination. d) All in all variable, the adaptive transformative leadership, the organizational commitment, and the job satisfaction correlate by 0.773 with teacher's OCB variable with 60% determination. The improvement of OCB value is an aspect that will support the optimal achievement of management process in education, so the school can be productive. The result of this study is useful to arrange establishment program through the principal and the teacher of SMP in order to improve teacher's OCB.

Author(s): Supriyanto Dj. Manguntaruno

SMART CPPS ARCHITECTURE INTEGRATED IN THE USE OF IEC-61499, WITH A HIGHLY ADAPTABLE FUNCTIONS BLOCK IN 4.0 INDUSTRY

Volume 75, Feb 2019
doi: 10.21506/j.ponte.2019.2.6
View Abstract Hide Abstract   |   Download PDF
Abstract: Currently, human beings are experiencing what has been named as the Fourth Industrial Revolution (Industry 4.0) in terms of automation and control systems of cyber-physical production environments. These systems do not only allow access to many innovative features, which are based on network connections, but also, they provide access to Internet of Things (IoT) world. It is in this context, IoT changes the way to link new technologies in order to obtain more efficient, intelligent, flexible and adaptable production systems. Thus, manufacturing systems have to be independent from the product itself that the companies wish to commercialize. Cyber-Physical Production Systems (CPPS) have several advantages like granular communications. On the other hand, common electric bandwidth for all users regardless of data speeds. As well, compatibility in connection with free or guided space communication links and the major intensity modulation compatibility. IEC standard 61499 is generally based on a generic architecture with specific software requirements and development rules that allows portability and device configuration.

Author(s): Felix M. Murillo Calderon, Angel G. Hidalgo Onate, Edwin M. Lema Guaman


THE PROBLEM OF AN UNCHARACTERISTIC FREQUENCY OF CAUSATIVE CONSTRUCTIONS LASSEN+INFINITIVE IN 15THCENTURY GERMAN TEXTS ABOUT VLAD III DRACULA

Volume 75, Mar 2019
doi: 10.21506/j.ponte.2019.3.5
View Abstract Hide Abstract   |   Download PDF
Abstract: The 15th-century German texts about Vlad III Dracula are both the result and the instrument of a political campaign. The connection between the original text and its further genre modifications can be traced through their shared features in vocabulary and grammatical constructions. A notable feature of the entire genre paradigm of data is the frequency of using the causative construction lassen+infinitive: none of 15th-century German texts of various genres demonstrate such an abundance of these constructions. This feature could be explained by the fact that the original German text was translated from Latin. The frequency of lassen+infinitive in the texts under research could have been a reflection of Latin syntactic features (subject-less clauses) in the language of the first German source, followed by further transfer of this feature into later German texts about Dracula of other genres (poem, chronicle, Volksbuch). Furthermore, it is possible to assume that the compilers of manuscripts, which served as an outline for further texts of different genres, distinguished, under the influence of Latin, between a simple active clause and a causative construction with a second agent as the subject. In general, the frequency of lassen+infinitive, uncharacteristic of German texts, can be explained by the uniqueness of the original \\\\\\\"History of Dracula\\\\\\\" and all texts that were derived from it. At the same time, the occurrence of this construction indicates links between these texts.

Author(s): Alexandra Kashperskaya, Maria Erykina


OCTENIDINE SPRAY: SIDE EFFECTS AND EFFICACY ON CLINICAL PARAMETERS AFTER PERIODONTAL FLAP SURGERY

Volume 75, Feb 2019
doi: 10.21506/j.ponte.2019.2.8
View Abstract Hide Abstract   |   Download PDF
Abstract: Objectives: The purpose of this study is to evaluate the effect of the 0.1% OCT spray and 0.2% CHX spray on plaque and gingivitis formation and wound healing as well as to compare the both spray’s side effects following periodontal flap surgery. \r\nMaterials and Methods: Plaque index, gingival index, papilla bleeding index, probing pocket depth, and gingival recession values were collected from 27 chronic periodontitis patients. Two periodontal flap surgeries were performed in two contralateral quadrants. 0.1% OCT spray (test) and 0.2% CHX spray (control) were applied in random by the patients for 10 days. Side effects, and wound healing indices were evaluated on the 1st, 7th and 28th days following periodontal surgery.\r\nResults: There were no significant differences between the test and control sites regarding to clinical periodontal parameters. Burning sensation on day 1 and 7 were significantly higher at test sites compared to control sites (p<0.05). Four patients used OCT spray complained of bitter taste, while patients using CHX had no complaint (p<0.05). Side effects, and wound healing indices between test and control sites were not statistically different (p>0,05).\r\nConclusions: OCT spray may be recommended as an alternative antimicrobial agent for optimum oral hygiene following surgical periodontal treatment.\r\n

Author(s): Canan Onder, Cem A. Gurgan, Sivge Kurgan, Muhittin A. Serdar, Elif Unsal