bluuebunny/crossref_metadata_2025 huggingface dataset:
The effectiveness of computer-aided teaching on the quality of learning geometric concepts by grade 7 learners at a selected primary school in KwaZulu-Natal
Authors:   , Yegambaram Puvernentheran
Published: July 2022

The emphasis of geometry is of such significance that the current National Curriculum Statement has included the learning of two-and three-dimensional shape from grade R. However it is observed that teachers rely on textbooks for their knowledge of a dynamic topic such as nets of solids. Learners do not have an opportunity to explore the different orientations of solid shapes. Not many teachers use technology to assist their pedagogy. Quality processes in mathematics education emphasise the use of technology in teaching and learning. A study was performed using “Poly”, which is free open-source software for mathematics teaching and learning. This software was chosen because it was an easy to use application. It was able to show the different orientations of the solid shapes. Three-dimensional geometry can be explored using this software. The research is based on a social constructivist view of learning and the methodology used is a case study. The Piagetian and van Hiele stages of development will be the basis of the researcher’s investigation. Piaget’s theory is based on age development whilst van Hiele alludes to the different stages of geometrical development. A control group was compared to the experimental group consisting of 20 learners each. The research was conducted in KwaZulu-Natal and involved a teacher with a class of 40 learners. Qualitative and quantitative data were collected and were analysed. The data consisted of classroom observations and learner questionnaires and interviews. The findings of this study affirm that the use of technology in the teaching of geometry can enhance conceptual understanding. Classroom management breaks from routine while using Poly. Poly has the potential to improve learners' educational experiences; it can enable the effective application of constructive, cognitive and collaborative models of learning. Poly is not just a mathematical tool but also a tool for thinking and helping to enhance learners’ learning. It can serve as a vehicle for helping learners to foster fundamental geometrical concepts. The assessment of the use of computers in mathematics by the learners of the experimental classes indicates that application of computers enables increasing the interest of the learners in mathematics and introduces more variety to the studies, making them more enjoyable and interesting.
The factors that influence the marketing of professional services : a case study
Authors:   , Enerson Meg
Published: July 2022

Indications from the initial phase of this study suggest that key marketing fundamentals apparent in this business sector differ significantly from those generally recognisable in commodity, consumer product and industrial marketing. It is postulated that whilst these differences are probably symptomatic of particular professional service practice norms and business ethics the formulation, implementation and evaluation of effective marketing can be facilitated utilising appropriate contemporary marketing paradigms. This study explores the current marketing milieu in a multinational professional services organisation and attempts to identify factors relevant to marketing within the organisation. The objective of this study was to identify the critical factors that influence the successful marketing of professional services and to develop a framework to support these findings. In order to accomplish this objective, the study was undertaken from a phenomenological, rather than a positivist paradigm. An exploratory quantitative Likert-scale survey combined with the allowance for qualitative open-ended comments/ feedback was adopted. The quantitative study incorporated employees in managerial, middle and junior roles from the Specific Professional Services Organisation ‘SPSO’s’ national offices based in Durban, Johannesburg, Pretoria, and Cape Town. Marketing representatives from the ‘SPSO’s’ international offices were also included in the survey. It can be summarised that the main factors influencing the marketing of professional services can be grouped according to Strategy, Product/ Service, Price, Place, Promotion, Physical Evidence, People, Process, and Other. A framework was devised, comprising the nine identified groups of factors including correlating recommendations, as well as a tabular outlay of additional constructive qualitative comments recorded from respondents with recommendations.
EFFECTS OF KINESIOLOGICAL ACTIVITIES OF DIFFERENT EXTENSITY ON BOYS 'BASIC-MOTOR ABILITIES
Authors: Halilovic Mensur , Lacic Osman , Bilalic Jasmin , Salkanovic Nermin
Published: July 2022

The goal of this research is to evaluate the effects of applied kinesiological activities of different extensions on the
transformation of basal-motor abilities of boys. The sample of respondents is represented by boys, students of VII, VIII and
IX grades of primary school. „21. March "Matuzići - Doboj South. The total sample consists of a set of 76 respondents
classified into three distinct groups. Based on the boys' statements about their participation in everyday physical activities,
groups with the numbering were defined through non-athletes: non-athletes-1, recreational athletes-2 and athletes-3. To
assess the basic motor skills of the respondents, the variables according to the Eurofit battery test program were used, as
follows: Flamingo balance, endurance in the joint, lying-sitting, running 10 × 5m (back and forth), hand tapping, hand
dynamometry, flexibility-mobility at the hip joint, jumping away from the spot and running 20m back and forth with
progressive acceleration. The results of univariate covariance analysis showed high significance in endurance assessment
tests (SHATL 20 and SHATL 10 × 5), followed by static arm strength (MSSIZG), and hand strength (MSSDIN) and torso
flexibility (MFLPRK) and balance (MRFLAM). Statistically significant differences in effects did not occur with the three
variables, namely hand tapping ( MBFTAR), long jump (MESSDM) or squat-sitting (MRSLSJ).
Keywords: Boys, basic motor skills, kinesiological activities, extensibility
Experimental and Artificial Neural Network Investigation on
the Thermal Efficiency of Two-Phase Closed Thermosyphon
Authors: Gedik Engin , Kurt Hüseyin , Pala Murat , Alakour Abdulla , Kaya Metin
Published: July 2022

The main purpose of this study is to investigate the thermal efficiency of a
Two-Phase Closed Thermosyphon (TPCT). For this purpose, initially, an
experimental study was performed, then to predict the other experimental
conditions ANN model which has used a wide range of thermal engineering
systems was developed. A vertical copper pipe charged with different working
fluids as pure water, ethanol, and ethylene glycol were used for TPCT. Impact
of the various parameter such as heating power input, inclination angle, cooling
water flow rate and working fluid type on the TPCT efficiency are examined. It
is found that the increase in the inclination angle increased the TPCT efficiency
while the increase in heating power input decreased efficiency. Regression
analysis was applied to examine the performance of ANN between estimated
and experimental data. The Mean Absolute Percentage Error (MAPE) was
found to be less than 1.3 % for the training set and 3.1% for the test data set.
The ANN predictions yield R2 in the range of 0.9998 for the training set and
0.9989 for the test data set. The obtained results from the experimental study
and ANN were found in good agreement, and it is also concluded that from the
study the ANN is a useful tool to estimate such thermal engineering problems.

Keywords:
Thermal efficiency
Heat pipe
Two-phase closed
thermosyphon
ANN
Importance of nanofluid evaluations at identical velocity and
pumping power: a specific evaluation for Ag-MgO/water
hybrid nanofluid flow through a pipe under turbulent regime
Authors: Kaya Huseyin , Akgul Volkan , Uysal Cuneyt
Published: July 2022

In this study, heat transfer and fluid flow characteristics of Ag-MgO/water
hybrid nanofluid flow through a pipe were numerically investigated under
turbulent regime at identical Reynolds number, velocity and pumping power.
To model the flow, the standard k turbulence model was used. In the analyses, Reynolds number was in the range from Re=10000 to Re=100000 and velocity ranged from V=0.3 m/s to V=3.0 m/s. As a result, it was found that the enhancements in convective heat transfer coefficient were obtained to be 23.72% for identical Reynolds number, 6.27% for identical velocity and 0.44% for identical pumping power. Nanofluids had higher velocities compared to their base fluid to be able to compare them at identical Reynolds
number. It was found that this velocity differences can already cause a
convective heat transfer enhancement of 16.29% without nanoparticle
addition. Nanofluids have higher performance evaluation criteria than unity at identical Reynolds number while they have lower values than unity at identical velocity and pumping power. It can be concluded that the results obtained for identical Reynolds number are extremely optimistic and not realistic.
Nanofluids should be examined at identical velocity or pumping power for a fair comparison.

Keywords:
Entropy generation
Heat convection
Heat transfer enhancement
Nanofluid
Turbulence
The Effectiveness of Roundtable Technique to Teach Writing Descriptive Text for Students with LowSelf-Efficacy
Authors: Maja Adi
Published: July 2022

Self efficacy is someone’s belief of his capability to complete a task or to performsomething. Zimmerman and Martinez-Pons, as cited in Kitikanan and Sasimonton (2017: 4) say,“Students with high self-efficacy tend to learn and achieve more than those with low ones”. Inother words, when someone has high self-efficacy, his/her effort to do writing will be better and itis assumed that their writing achievement will be better as well. On the contrary, students with lowself-efficacy often have lower score of writing than the students with high self-efficacy. Then,many techniques work well for only students with high self-efficacy. This study was designed tosee whether or not Roundtable technique is effective tobe used to teach writing descriptive text forthe students with low self-efficacy. The research was done at SMA N 1Panyabungan. This was anexperimental research design with 51 students in the population. The students were spread in threeclasses which consist of 17students in each class. Two classes were chosen as the sample by usingcluster random sampling technique. One class was the experiment class, and the other was ascontrol class. Students’ self-efficacy was tested by using questionnaires. Then, they were groupedinto students with high and low self-efficacy. After that they were given treatment. The data werethen collected after the treatment was given by administering writing test. The students’ writingachievement scores were analyzed by using t-test formula and the level of significance used was0.05(5%).After being calculated, the value of t-observed was 2.975, whereas the t-table was 2.306.Consequently, Roundtable technique was effective to be used to teach the students with low selfefficacy to write descriptive text at Al-Azhar Islamic Junior High School 32 Padang.
SUPERLATIVE FORMS OF ADJECTIVES BY ARTICLE NA + PREFIX UM- IN TOBA BATAK
Authors: Ambarita Esron
Published: July 2022

The objectives of this study are to investigate the formation of superlative forms of adjectives by article na +prefix [um-] in Toba Batak. The results show that superlative forms of adjectives by article na + prefix [um-] inToba Batak result in various morphological and phonological processes as follows: (1) if article na +prefix [um-]is attached to adjectives preceded by vowels [a], [e], [i], [o], and [u] the last phoneme of prefix [um-] is doubledi.e [um-] is pronounced as [umm-] sound. (2) if the initial phoneme is a bilabial plosive voiced consonant [b],prefix [um-] is pronounced as [ub-]sound as its allomorph. (3) if the initial phoneme is a velar plosive voicedconsonant [g], prefix [um-] is pronounced as [uŋ-] sound. (4) if the initial phoneme is a palato alveolar affricatevoiced consonant [j] prefix [um-] is spelt as [un-] sound but pronounced as [uj-] sound. (5) if the initial phonemeis a bilabial nasal voiced consonant [m] prefix [um-] does not change. (6) if the initial phoneme is an alveolarnasal voiced consonant [n], prefix [um-] is spelt and pronounced as [un-] sound. (7) if the initial phoneme is abilabial plosive voiceless consonant [p], prefix [um-] is spelt as [um-] sound but pronounced as [up-] sound. (8)if the initial phoneme is an alveolar rolled voiced consonant [r], prefix [um-] is spelt and pronounced as [ur-]sound. (9) if the initial phoneme is an alveolar fricative voiceless consonant [s], prefix [um-] is spelt as [un-]sound but pronounced as [us-] sound. (10) if the initial phoneme is an alveolar plosive voiceless consonant [t],prefix [um-] is spelt as [un-] sound but pronounced as [ut-] sound.
The The Effect Of Presentation Practice Production (Ppp) Technique On Student’s English Grammar Competence By Using Computer Assisted Language Learning
Authors: Siregar Putri Delima
Published: July 2022

This study deals with the effect of presentation practice production on students’ English grammar competence byusing computer assisted language learning. The objective of this thesis is to find out the effect of presentationpractice production on students’ English grammar competence by using computer assisted language learning. Thisstudy is an experimental research. The population of this study is the student class of X of SMK Parulian 1MEDAN. The number of students was 100 students. 40 students are taken as the sample. The first group isexperimental group which is teach by applying presentation practice production technique on computer assistedlanguage learning. While the second group is control group, it is teach without presentation practice productiontechnique on computer assisted language learning. Multiple choice test is used, as the instrument for collecting thedata. These test consisted of two types, namely pre-test and post-test. As the result of the test, t-observed was 3.14and t-table was 1.686 (p:005) the result of the data analysis show that the value of t-table 3.14 1.686(p:0.05). Itmeans that hypothesis alternative (Ha) is accepted while the null hypothesis (Ho) is rejected, therefore it isconcluded that presentation practice production technique on computer assisted language learning significantlyaffects students’ English grammar competence. Based on the explanation above, this research can be chosen as onealternative in teaching learning process.
The The Effect of Using Chain Story Technique In Writing Descriptive Text For The Grade Students of SMP Negeri 14 Medan
Authors: Pakpahan Yohana Serepina
Published: July 2022

The study focused on finding out the effect of applying Chain Story Technique in writing descriptive text. The chainstory technique is a technique which is used to make writing class more interesting. this technique is suitable use inwriting activity. It can help teacher in teaching learning process and can help students to understand quickly to makesummary of the text. The population of the research was the eight grade students of SMP NEGERI 14 MEDAN.There were fourty eight students of the eight grade as the sample of the research. This study was conducted with tworandomized class namely experimental class and control class. The experimental class was taught by applying ChainStory Technique, while the control class was taught without Chain Story Technique. The instrument of collectingthe data was writing test. The data were analyzed by using reliability (KR21) and t-test formula. The calculationshown that the mean score of students in experimental class is 8,45 and the mean score of control class who aretaught without Chain Story technique is 3,25. It can be concluded that the mean score of experimental class is higherthan control class. There is a significant difference scores between experimental group and control group. Based onresearch finding, it is concluded that t-observed is higher than t-table. T-obs> t- table (p=0.05) 8.813>1.679. itmeans that H0 is rejected and Ha is accepted. Chain Story Technique significantly affects on the eight grade studentsof SMP NEGERI 14 MEDAN in writing descriptive text. It is suggested the English Department Students, lecturerand all of people to use this strategy
Contrastive Study of English with Arabic in Imperative Sentence
Authors: Farianti Suci
Published: July 2022

The objectives of the research are to identify the differences and the similarities which can befound between imperative sentence in English and Arabic. The variable of this research is imperativesentence which is compared and contrasted to the English and Arabic language. In addition, incollecting the data, the writer uses library study and documentation technique. It is because the researchwas held in the library to find out the data from books, journals, and the other documents which arerelated to the research. Moreover, the writer also uses nothing technique and separating technique as thetechnique of analysis data. In describing the data, the writer also uses qualitative approach anddescriptive analysis to interpret the data systematically and to find out the characteristic of imperativesentence in English and Arabic. Afterwards, to analyze the data the writer uses content analysis toanalyze how far the data can describe and interpret the complete informations about the variable of theresearch in order to find out the similarities and the differences of imperative sentence in English andArabic completely through contrastive analysis. Based on the result, imperative sentence in English andArabic have the differences in several points such as the difference of the subject, the forms of the verb,the pattern, etc. However, there are also the similarities of imperative sentence in English and Arabic ingeneral such as the similarity of the use ‘you’ as the subject, positive and negative imperative sentenceas the form, etc.
Poetične tendence sodobnega hrvaškega
dramskega pisanja
Authors: Ljubić Lucija , Petranović Martina
Published: July 2022

Prispevek ponuja pregled poglavitnih poetičnih tendenc sodobnega hrvaškega dramskega pisanja po letu 2000. Avtorici se osredotočata na več znanih hrvaških dramatikov (kot so Mate Matišić, Davor Špišić, Ivan Vidić, Nina Mitrović, Elvis Bošnjak, Dubravko Mihanović, Tomislav Zajec, Ivana Sajko, Tena Štivičić, Ivor Martinić, Olja Lozica ...), katerih igre so bile v zadnjih dveh desetletjih uprizorjene, objavljene, raziskovane in/ali nagrajene tako na Hrvaškem kot v tujini. V prispevku se poglabljata v značilnosti vsebine (lokalne ali svetovne, javne ali intimne, priljubljene ali provokativne teme), v formalne in splošne lastnosti (dramska struktura, pripoved, poetizacija, raziskovanje meja dramskega pisanja), v predstavljanje kulturnih identitet (osebnih in kolektivnih), v zanimanje za množično in popularno kulturo, v značilnosti dramskega diskurza in jezika, v odnos do družbenega angažmaja ali kritike ter v prizadevanje za pritegnitev ciljnih družbenih skupin ali tipov občinstva. Nazadnje v prispevku raziskujeta tudi razlike in podobnosti med dramskim pisanjem v devetdesetih letih in pisanjem po letu 2000.
Dramska forma in etična razsežnost besedila gostija Simone Semenič
Authors: Jerkovič Lara
Published: July 2022

V prispevku se bomo posvetili eni najaktivnejših in najuspešnejših ustvarjalk v sodobnem slovenskem gledališkem prostoru, dramatičarki Simoni Semenič, in enemu njenih teoretično in vsebinsko najzanimivejših besedil zgodba o nekem slastnem truplu ali gostija ali kako so se roman abramovič, lik janša, štiriindvajsetletna julia kristeva, simona semenič in inicialki z.i. znašli v oblačku tobačnega dima (2010). Ugotavljali bomo, kako besedilo vpliva na gledalca/bralca, ki ga avtorica ves čas neposredno nagovarja skozi lik pripovedovalca, na podlagi analize forme in vsebine izbranega besedila pa bomo ocenili, koliko ga lahko uvrstimo med ne več dramske gledališke tekste (Poschmann), v okvir (spet) dramskega gledališkega teksta (»dramatisches Drama« – Haas) in na področje postdramskega (Lehmann) ali postpostdramskega (Angel-Perez) gledališča. Namen prispevka je torej analizirati (ne več ali spet?) dramsko formo gostije ter specifike avtoričinega stila pisanja in grajenja besedila, po drugi strani pa razložiti metode, s katerimi poudarja etično in moralno odgovornost vpletenih (predvsem bralcev/gledalcev) v dogajanje.
Avtentičnost v delih avtobiografskega
gledališča: pristopi milenijske generacije
Authors: Timčíková Zuzana
Published: July 2022

Med umetniki iste generacije, t. i. milenijci, ki delujejo predvsem na neodvisni sceni, lahko opazimo določene podobnosti, kot jih kažejo in uporabljajo predvsem v gledaliških formah, temah in odnosu do dramskega besedila. Bolj kot izvirna dramska besedila jih zanimajo avtobiografska besedila. Avtor pri tem ne nastopa kot samostojna oseba, temveč sodeluje cel kolektiv avtorjev. Gre za skupino ustvarjalcev, vključno z igralci oziroma izvajalci, ki izoblikuje dokončno različico besedila. Zdi se, da je izražanje avtentičnosti tako prek besedila kot na odru poglavitni namen takih pristopov k dramatiki. Predmet interpretacije postanejo trivialne in vsakdanje življenjske zadeve. V središče pozornosti postavljajo ljudi kot lastno samopodobo ali pa ljudi kot osebe, ki jih poznajo iz prijateljskih ali družinskih krogov, iz medijev ali iz pripovedovanja drugih. Avtorji se navdihujejo pri samih sebi, pri svojih težavah in odnosu do življenja. Poleg tega ustvarjalci radi pripovedujejo o sebi, analizirajo svoja občutja in zaznave, kot da bi imelo to, da jih lahko definirajo pred gledalci, nanje terapevtski učinek in bi potrjevalo relevantnost njihovega odnosa do življenja. Kaj lahko taka avtentičnost, ki se izraža s samoprojekcijo umetnikov v besedila pa tudi v uprizoritve, nudi občinstvu? Ali pri občinstvu vzbuja globlje zavedanje in razumevanje življenja ali zgolj reciklira tisto, kar že vemo?
The Bailiff Jernej (2018): Documentary
Representation of Poverty and Social
Shame
Authors: Dobovšek Zala
Published: July 2022

The paper analyses the introduction of the themes of poverty, social exclusion, classism
and class shame into the field of contemporary Slovenian drama in the form of a case
study. The documentary theatre production The Bailiff Jernej and His Rights (Hlapec
Jernej in njegova pravica), directed by Žiga Divjak, was created in 2018 as one of the
many events marking the 100th anniversary of the death of Ivan Cankar, the author of the work of the same title upon which Divjak based the performance. Divjak’s documentary reinterpretation of Cankar’s short story The Bailiff Yerney and His Rights performs an engaged gesture of empowerment of the invisible and underpaid working forces, who are thus given a voice in the public sphere. Divjak draws central thematic motifs such as precarious work, workers’ rights, subordination and poverty from Cankar’s “social tale” and, through the gesture of documentary research, transposes them to the present time, thus affirming the idea of the deep-rooted existence of the proletariat, even if, with a time lag, it appears today in a different form and with altered effects. The attribute is precisely the “play”, which could also be described as a “dramatic text” since the dramatic is inscribed into it not in terms of form and dramaturgical elements but as the essence and effect of documentary narratives.
The 21st -Century Drama and the New Reality of Social Networks
Authors: Veselovska Hanna
Published: July 2022

The article examines the impact of social networks on modern theatre by looking at the case of drama transformation. Discussed are the peculiarities of reportage plays versus traditional plays, emphasizing the various forms of so-called Facebook plays. The author shows that while Facebook plays have become a major feature of theatrical life in the 21st century, their proliferation has also revealed social networks’ negative effects on social communication. This has found its apt reflection in dramatic texts. The study concludes with an argument that although the impact of social networks on drama has of late tended to wane, the changes that have occurred in the structure of texts over the last decade or so appear to be largely irreversible.
Dramatika enaindvajsetega stoletja in nova
resničnost družbenih omrežij
Authors: Veselovska Hanna
Published: July 2022

Prispevek preučuje vpliv družabnih omrežij na sodobno gledališče s tem, ko razišče
primer transformacije drame. Razpravlja o posebnostih reportažnih dram v primerjavi s
tradicionalnimi, pri tem še posebej poudarja različne oblike t. i. facebook drame. Avtorica
pokaže, da so facebook drame v enaindvajsetem stoletju postale poglavitna značilnost
gledališkega življenja, vendar pa je njihov razcvet razkril tudi negativni učinek omrežij na
družbeno komunikacijo, kar se ustrezno odraža tudi v dramskih besedilih. Prispevek sklene
s trditvijo, da se zdijo spremembe, do katerih je v zadnjem desetletju prišlo v strukturi
besedil, v veliki meri nepovratne, pa čeprav vpliv družabnih omrežij na dramatiko v zadnjem
času slabi.
Drama Without a Generation
Authors: Hrvatin Varja , Radi Buh Maša , Ribič Jakob
Published: July 2022

In this paper, we will concentrate on the playwriting of the so-called young generation. In doing so, we will ask how this generation can be defined, given that the writers are quite individualised and dispersed among themselves, and their texts are quite diverse in terms of content, genre and form. We will argue that being born and growing up concurrently with the development of the internet, social networks and other new technologies, which are nowadays fundamentally inscribed in the social fabric, has significantly defined the young generation. Consequently, the boundaries between the virtual and the reality are constantly being blurred, and the symbiosis between the two, summed up in the term “biovirtual”, is continuously being established. Using examples of four theatre texts (The Thirty Somethings by Eva Mahkovic and Tereza Gregorič, It All Began with the Bunny Rabbit Goulash by Varja Hrvatin, The Interpretation of Sanja by Ela Božič and Work and the Maiden I-V: Serf Dramas by Nika Švab), we will reflect on how young authors are incorporating the post-internet reality, defined by the ubiquity of new technologies, into their playwriting. We will consider whether these writers’ generation generates new playwriting forms and dramaturgical approaches. Finally, we will draw attention to the conditions under which these authors operate, which (from systemic education and the repertory logic of staging to the pervasive precarisation and instability) do not provide economic security. Hence, there is no room for experiment and error. This forces writers to opt for already tested dramatic forms, strategies and themes. How, then, can one define the playwriting of a generation if it lacks a clear break with the tradition that would characterise this generation?
Relationship between extinction magnitude and climate change during major marine and terrestrial animal crises
Authors: Kaiho Kunio
Published: July 2022

Abstract. Major mass extinctions in the Phanerozoic Eon occurred during
abrupt global climate changes accompanied by environmental destruction
driven by large volcanic eruptions and projectile impacts. Relationships
between land temperature anomalies and terrestrial animal extinctions, as
well as the difference in response between marine and terrestrial animals to
abrupt climate changes in the Phanerozoic, have not been quantitatively
evaluated. My analyses show that the magnitude of major extinctions in
marine invertebrates and that of terrestrial tetrapods correlate well with
the coincidental anomaly of global and habitat surface temperatures during
biotic crises, respectively, regardless of the difference between warming
and cooling (correlation coefficient R=0.92–0.95). The loss of more than
35 % of marine genera and 60 % of marine species corresponding to the so-called “big five” major mass extinctions correlates with a >7 ∘C global cooling and a 7–9 ∘C global warming for
marine animals and a >7 ∘C global cooling and a
>∼7 ∘C global warming for terrestrial
tetrapods, accompanied by ±1 ∘C error in the temperature
anomalies as the global average, although the amount of terrestrial data is
small. These relationships indicate that (i) abrupt changes in climate and
environment associated with high-energy input by volcanism and impact relate
to the magnitude of mass extinctions and (ii) the future anthropogenic
extinction magnitude will not reach the major mass extinction magnitude
when the extinction magnitude parallelly changes with the global surface
temperature anomaly. In the linear relationship, I found lower tolerance in
terrestrial tetrapods than in marine animals for the same global
warming events and a higher sensitivity of marine animals to the same
habitat temperature change than terrestrial animals. These phenomena fit with
the ongoing extinctions.
Dynamic regimes of the Greenland Ice Sheet emerging from interacting melt–elevation and glacial isostatic adjustment feedbacks
Authors: Zeitz Maria , Haacker Jan M. , Donges Jonathan F. , Albrecht Torsten , Winkelmann Ricarda
Published: July 2022

Abstract. The stability of the Greenland Ice Sheet under global warming is governed by a number of dynamic processes and interacting feedback mechanisms in the ice sheet, atmosphere and solid Earth.
Here we study the long-term effects due to the interplay of the competing melt–elevation and glacial isostatic adjustment (GIA) feedbacks for different temperature step forcing experiments with a coupled ice-sheet and solid-Earth model.
Our model results show that for warming levels above 2 ∘C, Greenland could become essentially ice-free within several millennia, mainly as a result of surface melting and acceleration of ice flow.
These ice losses are mitigated, however, in some cases with strong GIA feedback even promoting an incomplete recovery of the Greenland ice volume.
We further explore the full-factorial parameter space determining the relative strengths of the two feedbacks:
our findings suggest distinct dynamic regimes of the Greenland Ice Sheets on the route to destabilization under global warming – from incomplete recovery, via quasi-periodic oscillations in ice volume to ice-sheet collapse.
In the incomplete recovery regime, the initial ice loss due to warming is essentially reversed within 50 000 years, and the ice volume stabilizes at 61 %–93 % of the present-day volume.
For certain combinations of temperature increase, atmospheric lapse rate and mantle viscosity, the interaction of the GIA feedback and the melt–elevation feedback leads to self-sustained, long-term oscillations in ice-sheet volume with oscillation periods between 74 000 and over 300 000 years and oscillation amplitudes between 15 %–70 % of present-day ice volume.
This oscillatory regime reveals a possible mode of internal climatic variability in the Earth system on timescales on the order of 100 000 years that may be excited by or synchronized with orbital forcing or interact with glacial cycles and other slow modes of variability.
Our findings are not meant as scenario-based near-term projections of ice losses but rather providing insight into of the feedback loops governing the “deep future” and, thus, long-term resilience of the Greenland Ice Sheet.
Increased spatial extent and likelihood of compound long-duration dry and hot events in China, 1961–2014
Authors: Yang Yi , Maraun Douglas , Ossó Albert , Tang Jianping
Published: July 2022

Abstract. Compound dry and hot events can cause aggregated damage compared with isolated hazards. Although increasing attention has been paid to compound dry and hot events, the persistence of such hazard is rarely investigated. Moreover, little attention has been paid to the simultaneous evolution process of such hazard in space and time. Based on observations during 1961–2014, the spatiotemporal characteristics of compound long-duration dry and hot (LDDH) events in China during the summer season are investigated on both a grid basis and a 3D event basis. Grid-scale LDDH events mainly occur in eastern China, especially over northeastern areas. Most regions have experienced a pronounced increase in the likelihood of LDDH events, which is dominated by increasing temperatures. From a 3D perspective, 146 spatiotemporal LDDH (SLDDH) events are detected and grouped into nine spatial patterns. Over time, there is a significant increase in the frequency and spatial extent of SLDDH. Consistent with the grid-scale LDDH events, hotspots of SLDDH events mainly occur in northern China, such as Northeast, North China and Qinghai clusters, which are accompanied by high occurrence frequency and large affected areas greater than 300,000 km2.
Spatiotemporal observations of nocturnal low-level jets and impacts on wind power production
Authors: Weide Luiz Eduardo , Fiedler Stephanie
Published: July 2022

Abstract. A challenge of an energy system that nowadays more strongly depends on wind power generation is the spatial and temporal variability in winds. Nocturnal low-level jets (NLLJs) are typical wind phenomena defined as a maximum in the vertical profile of the horizontal wind speed. A NLLJ has typical core heights of 50–500 m a.g.l. (above ground level), which is in the height range of most modern wind turbines. This study presents NLLJ analyses based on new observations from Doppler wind lidars. The aim is to characterize the temporal and spatial variability in NLLJs on the mesoscale and to quantify their impacts on wind power generation. The data were collected during the Field Experiment on Submesoscale Spatio-Temporal Variability (FESSTVaL) campaign from June to August 2020 in Lindenberg and Falkenberg (Germany), located at about 6 km from each other. Both sites have seen NLLJs in about 70 % of the nights with half of them lasting for more than 3 h. Events longer than 6 h occurred more often simultaneously at both sites than shorter events, indicating the mesoscale character of very long NLLJs. Very short NLLJs of less than 1 h occurred more often in Lindenberg than Falkenberg, indicating more local influences on the wind profile. We discussed different meteorological mechanisms for NLLJ formation and linked NLLJ occurrences to synoptic weather patterns. There were positive and negative impacts of NLLJs on wind power that we quantified based on the observational data. NLLJs increased the mean power production by up to 80 % and were responsible for about 25 % of the power potential during the campaign. However, the stronger shear in the rotor layer during NLLJs can also have negative impacts. The impacts of NLLJs on wind power production depended on the relative height between the wind turbine and the core of the NLLJ. For instance, the mean increase in the estimated power production during NLLJ events was about 30 % higher for a turbine at 135 m a.g.l. compared to one at 94 m a.g.l. Our results imply that long NLLJs have an overall stronger impact on the total power production, while short events are primarily relevant as drivers for power ramps.
Social Innovation of Livablehome as a City Government Policy in Social Development in Prabumulih City
Authors: Suhendra Adi
Published: July 2022

This research is about innovation or policy of a region in the context of poverty alleviation. This research is relevant and interesting to discuss because with the creation of this innovation, the Prabumulih City Government received a MURI Record certificate for the Poverty Alleviation Program (Development) of 10 livable houses/month without using APBD, APBN, and CSR funds in 2016. This innovation is of course can be a motivation for other regions that have similar problems, so as to minimize the occurrence of poverty.The population in this study is an area that has created innovations in the context of poverty alleviation. While the sample in this study is a livable house as a policy of the Prabumulih City Government to Empower the Participation of Civil Servants and Non Civil Servants in Poverty Alleviation of the Prabumulih City Community. The results of this study indicate that the innovations created by Prabumulih Regency have succeeded in achieving the goals that have been set, where the construction of habitable houses has helped many poor people to have houses that meet health standards so that they become comfortable housing for regional innovation programs with zakat/ infaq of employees within the Prabumulih City Government.
Tracking Asian tiger mosquito introductions in the Netherlands using Nextstrain
Authors: Ibáñez-Justicia A. , van de Vossenberg B. , Warbroek T. , Teekema S. , Jacobs F. , Zhao T. , Bueno-Mari R. , Aranda C. , Flacio E. , Chaskopoulou A. , Albieri A. , Stroo A.
Published: July 2022

The Asian tiger mosquito Aedes albopictus is an undesirable invasive mosquito species that causes considerable nuisance through its biting behaviour, and has been proven to transmit more than 22 different viruses under laboratory conditions. Human-aided transportation, the capacity of winter diapause, and possibly global warming have contributed to the global invasion of Ae. albopictus. The species was found for the first time in the Netherlands in 2005, and since 2010 has been found introduced at many locations throughout the country. Elucidating the origin of these introduced mosquitoes could help the authorities on the planning and evaluation of the risk-based surveillance of Aedes invasive mosquitoes. This study aims to determine the genomic diversity of Ae. albopictus that is represented within and between collection sites with a database consisting of Ae. albopictus specimens from past introductions in the Netherlands, specimens from populations from other regions in the world, and data from specimens present in databases. In this study, complete mitochondrial genomes were sequenced, a recommended marker for phylogeography analysis of Ae. albopictus. Metadata is presented in a Nextstrain build containing 254 Ae. albopictus genomes up to October 2020. Overall, the phylogeny results of the Nextstrain build reveals a low mitogenomic diversity within Ae. albopictus. Genomic diversity of Ae. albopictus specimens found in the Netherlands fall within one main cluster which is hypothesised to represent the globally invasive strain of the species. Other organisations are stimulated to share data or materials for inclusion and improvement of the Nextstrain build, which can be accessed at https://nextstrain.nrcnvwa.nl/Aedes/20210728.
EDUKASI PENGGUNAAN MEDIA PEMBELAJARAN BERBASIS WEB BAGI GURU SMK NEGERI 2 BUNGO
Authors: Putra Yogi Irdes , Sabir Arisman , Ridoh Ahmad , Fauziah Fauziah , Maryana Ana
Published: July 2022

Tujuan kegiatan yang ingin dicapai adalah :meningkatkan pengetahuan, pemahaman dan ketrampilan guru SMK Negeri 2 Bungo dalam memanfaatkan media pembelajaran berbasis web sehingga dapat meningkatkan pengetahuan, memudahkan tugas-tugasnya serta dapat meningkat motivasi dan hasil belajar siswa SMK Negeri 2 Bungo. Tujuan ini dapat dicapai menggunakan model pengabdian yaitu Model (Pendampingan) dan metode pelaksanaa kegiatan ini metode (Pendampingan), secara khusus metode yaitu : (1). Pelatihan dalam bentuk penyajian materi pelatihan tentang sejarah Internet, penggunaan media pembelajaran berbasis web. Kegiatan ini didampingi oleh seluruh tim pelaksana (2). Penugasan membuat semua bahan ajar berbasis web yang sesuai dengan program keahlian masing-masing guru mata pelajaran. Berdasarkan hasil obeservasi selama kegiatan, terlihat bahwa akvitas peserta sangat baik, ini dapat dilihat dari banyaknya indikator-indikator aktivitas pelatihan yang muncul. Begitu juga dengan hasil angket yang diberikan ke peserta diakhir kegiatan, 93 % peserta puas dengan kegiatan ini. Pelaksanaan kegiatan edukasi telah dapat mencapai tujuan yang diharapkan, hal ini dapat dilihat dari tugas-tugas yang diberikan kepada peserta dapat diselesaikan dengan baik. Kepada peserta diharapkan hasil pelatihan dapat digunakan untuk mengembangkan media pembelajaran yang sesuai dengan bidang studi yang diajarkan disekolah.
PENERAPAN SUPERVISI KLINIS UNTUK MENINGKATKAN KINERJA GURU PADA ASPEK PEDAGOGI DALAM MENGEMBANGKAN RPP DI SMAN 5 BUNGO
Authors: Wiyanta Agus
Published: July 2022

Penelitian ini bertujuan untuk meningkatkan kinerja guru aspek pedagogi dalam mengembangkan rencana pelaksanaan pembelajaran (RPP) melalui supervisi klinis. Penelitian ini merupakan penelitian tindakan sekolah (PTS) yang dilakukan dengan empat tahap yaitu perencanaan, pelaksanaan, observasi dan refleksi. Subjek penelitian ini adalah guru kelas X MIPA, X IPS, XI MIPA, XI IPS, XII MIPA dan XII IPS SMAN 5 Bungo. Teknik pengumpulan data dilakukan dengan observasi langsung kompetensi guru dalam mengembangkan RPP. Keberhasilan PTS dilihat dari adanya peningkatan kinerja dari rerata skor 72,1 % pada siklus I dengan kategori baik menjadi 86% pada siklus II dengan kategori sangat baik. Maka dapat disimpulkan bahwa penerapan supervisi klinis dapat meningkatkan kinerja guru pada aspek pedagogi dalam mengembangkan RPP
UPAYA PENINGKATAN MOTIVASI DAN HASIL BELAJAR EKONOMI SISWA MENGGUNAKAN MEDIA KOMIK STRIP DI SMAN 2 BUNGO
Authors: Syaifuddin Mokhammad
Published: July 2022

Penelitian ini bertujuan untuk meningkatkan motivasi dan hasil belajar dengan menggunakan media komik strip. Penelitian ini merupakan penelitian tindakan kelas (PTK). PTK dilakukan dengan empat tahap yaitu perencanaan, pelaksanaan, pengamatan dan refleksi. Subjek penelitian ini adalah siswa kelas XI IPS 1 SMAN 2 Bungo. Teknik pengumpulan data dilakukan dengan observasi dan tes tertulis. Berdasarkan hasil penelitian diperoleh persentase motivasi motivasi pada siklus I sebesar 58,53% dengan kategori cukup dan meningkat pada siklus II sebesar 81,96% dengan kategori tinggi. Berdasarkan hasil evaluasi pada siklus I, ketuntasan belajar siswa mencapai 62,22% dengan nilai rata-rata mencapai 72,8. Pada siklus II ketuntasan belajar meningkat menjadi 84,44% dengan nilai rata-rata 84,06. Berdasarkan hasil penelitian di atas dapat disimpulkan bahwa pembelajaran dengan menggunakan media komik strip dapat meningkatkan motivasi dan hasil belajar ekonomi siswa kelas XI IPS SMAN 2 Bungo.
MEMAKSIMALKAN KOMPETENSI SENAM LANTAI MELALUI METODE PRACTICE STYLE DENGAN CARD TASK DI SMAN 1 BUNGO
Authors: B Safrial,
Published: July 2022

Penelitian ini dilakukan karena terdapat permasalahan yang muncul di kelas XI MIPA SMAN 1 Bungo yaitu siswa merasa kurang berminat mengikuti pembelajaran headstand karena takut melakukan latihan headstand dan kurang memahami tentang penjelasan gerakan headstand yang benar. Penelitian ini menggunakan metode penelitian tindakan kelas. Pada pelaksanaan siklus I satu kali pertemuan dan siklus II dilaksanakan 1 kali pertemuan, dimana pada setiap siklusnya akan terlihat peningkatan hasil belajar headstandnya. Subjek penelitian ini adalah siswa kelas XI MIPA 2 SMAN 1 Bungo. Berdasarkan hasil penelitian diperoleh persentase ketuntasan belajar pada siklus I, aspek keterampilan 11,76% dengan skor rata-rata 51,18, aspek sikap 58,82% dengan skor rata-rata 73,53 dan 64,71% aspek pengetahuan dengan nilai rata-rata 76,18. Pada siklus II terjadi peningkatan menjadi, aspek keterampilan 70,59% dengan nilai rata-rata 71,91, aspek sikap 76,47% dengan nilai rata-rata 76,47 dan aspek  pengetahuan 91,18% nilai 83,53. Hasil belajar pada siklus I yang dapat memenuhi KKM sebanyak 17,65% dari total siswa dengan nilai rata-rata 65,44 dan pada siklus II meningkat menjadi 76,5% dari total siswa dengan nilai rata-rata 76,76. Berdasarkan hasil penelitian di atas dapat disimpulkan bahwa pembelajaran melalui metode practical style dengan media task card dapat meningkatkan hasil belajar pada siswa kelas XI MIPA SMAN 1 Bungo.
PENERAPAN MODEL DISCOVERY LEARNING UNTUK MENINGKATKAN PROSES DAN HASIL BELAJAR IPA SEKOLAH DASAR
Authors: Wiyoko Tri , Putra Randi Eka , Epriyani Neta
Published: July 2022

Science learning is declared successful if the predetermined learning objectives can be achieved. However, the results of the pre-observation show that there are problems in the process and learning outcomes of science in class IV SDN 17/II Tanah Grow. This research is a classroom action research (CAR) which was carried out in 2 cycles. Each cycle consists of planning, implementation, observation and reflection. The research instrument used to collect data consisted of observation sheets and learning outcomes test questions. The results showed an increase in the learning process carried out by educators from cycle I to cycle II with a good category, and the learning process of students increased from cycle I to cycle II with a good category. Furthermore, for the learning outcomes obtained by students after participating in learning with the discovery learning model, it showed an increase from the first cycle of 68% to 87.5% with a good category in the second cycle. So the discovery learning model can improve the process and learning outcomes of fourth grade students for science learning content.
PENGARUH KUALITAS PELAYANAN TERHADAP KEPUASAN MASYARAKAT PEMOHON SERTIFIKAT TANAH
Authors: Agrita Tri Wera , Wulandari Titis
Published: July 2022

Esensi visi pelayanan publik adalah terwujudnya pelayanan publik yang prima, yang berarti mampu mewujudkan kepuasan masyarakat dalam upaya mendapatkan pelayanan dari instansi pemerintah. Penelitian ini bertujuan untuk mengetahui pengaruh kualitas pelayanan terhadap kepuasan masyarakat pemohon sertifikat tanah Kabupaten Bungo. Penelitian ini bersifat deskritif  dengan menggunakan teknik pengumpulan data survey yang bertujuan untuk mengetahui pengaruh dua variabel atau lebih di Kantor Badan Pertanahan Nasional Kabupaten. Penelitian ini menggunakan metode Kuantitatif (perhitungan statistik) dengan regresi linier sederhana yaitu menggunakan analisis statsistik Koofisien Korelasi Product. Sebanyak 100 orang sampel yang berasal dari pemohon sertifikat tanah dengan teknik accidental sampling dan menyebarkan angket yang diisi oleh responden. Hasil analisis pengujian hipotesis didapatkan bahwa ada pengaruh yang positif dan signifikan dari pelayanan petugas terhadap kepuasan masyarakat dalam mengurus sertifikat tanah. Pernyataan hipotesis bahwa terdapat pengaruh yang positif dan signifikan dari pelayanan petugas terhadap kepuasan masyarakat dalam mengurus sertifikat tanah terbukti, yang berarti semakin kuat pelayanan petugas maka semakin kuat pula kepuasan masyarakat dalam mengurus sertifikat tanah. Hal ini ditunjukkan dengan nilai t tabel yang lebih kecil dari t hitung (1,661) < t hitung (6,666), dan nilai signifikansi (0,000) yang lebih kecil dari 0,05 serta koefisien regresi sebesar 0,559.
Los principios del Derecho del Trabajo: Fundamento y actualidad del principio protector
Authors: Suárez María Florencia
Published: July 2022

El presente artículo tiene como objetivo formular algunas aproximaciones teóricas sobre los principios del Derecho del Trabajo vinculando sus funciones y contenido protector a su vigencia y eficacia actual. Su abordaje está dividido en tres ejes fundamentales para su mejor comprensión. El primero está destinado a los principios generales del derecho: su conceptualización, diferencia con otras fuentes del derecho y la evolución de su función normativa. El segundo apartado busca adentrarse más precisamente en el principio protector y su fundamento a través de tres preguntas básicas (¿a quién se protege? ¿por qué? ¿cómo lo hace?), para luego pasar a describir someramente el proceso de su recepción legal, constitucional y jurisprudencial en nuestro sistema normativo. El último eje, por su parte, estará destinado a brindar un pantallazo general sobre el presente del sistema de protección y algunas de las principales limitaciones con las que cuenta para cumplir con su objetivo.