bluuebunny/crossref_metadata_2025_split huggingface dataset:
ANALISIS PERANAN WALI KELAS DALAM PENDAMPINGAN BIMBINGAN DAN KONSELING SERTA DAMPAKNYA TERHADAP PENANGANAN SISWA BERMASALAH
Authors: Chita Putri Harahap Ade , Salsabilla Ella , Rahayu Sri , Husna Natasya , Ramadhita Zahrani , Syahreza Ginting M.Farhan 
Published: May 2023

Wali kelas dapat menjadi relasi utama konselor dalam menghadapi siswa bermasalah, karena wali kelas memiliki tanggung jawab penuh dalam menangani permasalahan siswa di kelas. Penelitian ini bertujuan untuk mendeskripsikan dan menjawab pertanyaan penelitian, peran wali kelas dalam penyelenggaraan bimbingan dan konseling di sekolah dan dampaknya terhadap siswa bermasalah di kelas binaan. Kajian ini dapat menghasilkan model dan program pendidikan berbasis siswa bermasalah. Desain penelitian ini adalah penelitian kualitatif. Pendekatan yang digunakan adalah studi kasus deskriptif, dengan key informan dalam penelitian ini adalah wali kelas MAS AL ULUM Medan Tanah Datar. Hasil penelitian ini menunjukkan bahwa peran wali kelas dalam penyelenggaraan bimbingan dan konseling masih lemah. Hal ini disebabkan: (1) kurangnya pemahaman tentang bimbingan dan konseling wali kelas, (2) kurangnya komunikasi fungsional antara konselor dan wali kelas, (3) kurangnya layanan publik bimbingan dan konseling, 4) tidak ada upaya pembinaan insentif dilakukan kepala sekolah dalam meningkatkan kompetensi guru bimbingan konseling, (5) tidak ada waktu kelas yang diberikan kepada pembimbing, dan (6) adanya referensi buku peraturan di sekolah sebagai acuan standar dalam menghadapi siswa bermasalah. Konsekuensinya, penanganan siswa bermasalah di sekolah cenderung menggunakan pendekatan disiplin dalam upaya yang diringankan. Kata kunci: Peran Wali Kelas, Bimbingan dan Konseling, Siswa Bermasalah
KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA DALAM MENYELESAIKAN SOAL BANGUN DATAR DITINJAU DARI SELF-REGULATED LEARNING
Authors: Hadayana Nur Irsa , Mirza Ade , Hamdani Hamdani , Pasaribu Revi Lestari 
Published: May 2023

Penelitian ini bertujuan untuk mengetahui kemampuan berpikir kreatif matematis ditinjau dari Self-regulated learning siswa dalam menyelesaikan soal bangun datar. Metode penelitian yang digunakan adalah deskriptif kualitatif. Penelitian ini melibatkan 12 siswa kelas VII SMP Negeri 10 Pontianak. Hasil penelitian ini menunjukkan bahwa siswa yang mempunyai kemampuan berpikir kreatif dengan Self-regulated learning tinggi siswa dapat menyelesaikan soal bangun datar dengan benar dan lancar dari berbagai sudut pandang yang berbeda beserta jawaban yang baru atau unik, serta siswa dapat mengatur diri dalam menentukan tujuan dan target dalam belajar atau mampu memenuhi tiga indikator kemampuan berpikir kreatif yaitu Kefasihan (Fluency), Fleksibilitas (Flexibility), dan Kebaruan (Novelty). Siswa yang mempunyai kemampuan berpikir kreatif dengan Self-regulated learning sedang siswa dapat menyelesaikan soal dengan benar dan lancar dari berbagai sudut pandang tetapi tidak dapat memberikan jawaban yang baru atau hanya mampu memenuhi dua indikator berpikir kreatif yaitu Kefasilhan (Fluency), Fleksibilitas (Flexibility). Sedangkan siswa yang mempunyai kemampuan berpikir kreatif dengan Self-regulated learning rendah tidak dapat memenuhi tiga indikator kemampuan berpikir kreatif serta siswa belum bisa mengatur diri dalam menentukan tujuan dan target dalam belajar.
La Prosa Política de Gabriela Mistral como Literatura Contra-hegemónica
Authors: Farías Rojas Gabriel Arturo , Farias Reis Páscoa Márcio Leonel , Cid Uribe Miriam Elizabeth 
Published: May 2023

En el contexto del reconocimiento de Gabriela Mistral como la primer Premio Nobel de Literatura en América Latina, aún existe falta de reconocimiento de su obra literaria. Esto puede parecer extraño, y hasta increíble, pero de todas formas ocurre debido a que sólo parte de su obra, esto es su obra poética, es considerada y respetada por la crítica literaria. La segunda, su prosa, sólo es aceptada en la medida en que ella es similar a una prosa poética. En esta situación, su prosa política, que es mayoritaria dentro de la obra en prosa por ella escrita sólo es reconocida en el mundo del silencio. Sin embargo, esa censura es contradictoria según el hecho por el cual la autora recibió el Premio Nobel de Literatura. Así, aunque hayan personas en el mundo literario que puedan esconder la naturaleza canónica de la prosa política, ella siempre va a emerger en las discusiones contemporáneas sobre la importancia de la subjetividad mistraliana, la cual, a pesar de los esfuerzos de algunos por esconder ese canon literario, conferirá a su prosa, y especialmente a su prosa política, el carácter de literatura contra-hegemónica.
X-Ray Unveiling Events in a z ≈ 1.6 Active Galactic Nucleus in the 7 Ms Chandra Deep Field-South
Authors: Yu Li-Ming , Luo Bin , Brandt W. N. , Bauer Franz E. , De Cicco D. , Fabian A. , Gilli R. , Koekemoer A. , Paolillo M. , Schneider D. P. , Shemmer O. , Tozzi P. , Trump Jonathan R. , Vignali C. , Vito F. , Wang J.-X. , Xue Y. Q. 
Published: May 2023

Abstract
We investigate the extreme X-ray variability of a z = 1.608 active galactic nucleus in the 7 Ms Chandra Deep Field-South (XID 403), which showed two significant X-ray brightening events. In the first event, XID 403 brightened by a factor of >2.5 in ≲6.1 rest-frame days in the observed-frame 0.5–5 keV band. The event lasted for ≈5.0–7.3 days, and then XID 403 dimmed by a factor of >6.0 in ≲6.1 days. After ≈1.1–2.5 yr in the rest frame (including long observational gaps), it brightened again, with the 0.5–5 keV flux increasing by a factor of >12.6. The second event lasted over 251 days, and the source remained bright until the end of the 7 Ms exposure. The spectrum is a steep power law (photon index Γ = 2.8 ± 0.3) without obscuration during the second outburst, and the rest-frame 2–10 keV luminosity reaches

1.5

−
0.5

+
0.8

×

10

43

erg

s

−
1

; there is no significant spectral evolution within this epoch. The infrared-to-UV spectral energy distribution of XID 403 is dominated by the host galaxy. There is no significant optical/UV variability and R-band (rest-frame ≈2500 Å) brightening contemporaneous with the X-ray brightening. The extreme X-ray variability is likely due to two X-ray unveiling events, where the line of sight to the corona is no longer shielded by high-density gas clumps in a small-scale dust-free absorber. XID 403 is probably a high-redshift analog of local narrow-line Seyfert 1 galaxies, and the X-ray absorber is a powerful accretion disk wind. On the other hand, we cannot exclude the possibility that XID 403 is an unusual candidate for tidal disruption events.
Merger Signatures are Common, but not Universal, in Massive, Recently Quenched Galaxies at z ∼ 0.7
Authors: Verrico Margaret E. , Setton David J. , Bezanson Rachel , Greene Jenny E. , Suess Katherine A. , Goulding Andy D. , Spilker Justin S. , Kriek Mariska , Feldmann Robert , Narayanan Desika , Donofrio Vincenzo , Khullar Gourav 
Published: May 2023

Abstract
We present visual classifications of merger-induced tidal disturbances in 143 M
* ∼ 1011
M
⊙ post-starburst galaxies at z ∼ 0.7 identified in the

SQuIGG

L

⃗

E

Sample. This sample spectroscopically selects galaxies from the Sloan Digital Sky Survey that have stopped their primary epoch of star formation within the past ∼500 Myr. Visual classifications are performed on Hyper Suprime-Cam imaging. We compare to a control sample of mass- and redshift-matched star-forming and quiescent galaxies from the Large Early Galaxy Census and find that post-starburst galaxies are more likely to be classified as disturbed than either category. This corresponds to a factor of

3.6

−
1.3

+
2.9

times the disturbance rate of older quiescent galaxies and

2.1

−
.73

+
1.9

times the disturbance rate of star-forming galaxies. Assuming tidal features persist for ≲500 Myr, this suggests merging is coincident with quenching in a significant fraction of these post-starbursts. Galaxies with tidal disturbances are younger on average than undisturbed post-starburst galaxies in our sample, suggesting tidal features from a major merger may have faded over time. This may be exacerbated by the fact that, on average, the undisturbed subset is fainter, rendering low-surface-brightness tidal features harder to identify. However, the presence of 10 young (≲150 Myr since quenching) undisturbed galaxies suggests that major mergers are not the only fast physical mechanism that shut down the primary epoch of star formation in massive galaxies at intermediate redshift.
State-selective Charge Exchange in 19.5–100 keV amu−1 O6+ Collision with He and H2
Authors: Cao T. , Meng T. , Gao Y. , Zhang S. F. , Zhang R. T. , Yan S. , Zhu X. L. , Wang J. , Ma P. , Ren B. , Xia Z. H. , Guo D. L. , Zhang C. J. , Lin K. Z. , Xu S. , Wei B. , Ma X. 
Published: May 2023

Abstract
The cross sections of state-selective charge exchange (CX) between highly charged ions and neutrals are important for modeling extreme ultraviolet and soft X-ray emissions in many astrophysical objects with hot plasma impacting cold media. By using cold-target recoil-ion momentum spectroscopy, we measure O6+ CX collisions with He and H2 in the collision energy range of 19.5 to 100 keV amu−1. The relative cross sections of state-selective single CX are reported for electron capture into O5+(1s
2
nl) n = 2, 3, 4, 5, ≥6 and n = 3, 4, 5, ≥6 for He and H2, respectively. With the collision energy increasing to 100 keV amu−1, the main capture channel shifts to higher n for both target species as compared to available theoretical results. We also report state-selective cross sections for double CX with He, where doubly excited states of

O

4
+

(
1

s

2

nln
′
l
′
)

with

nln
′
l
′

being 2s
2 (1S), 2s2p (1P), 2p
2 (1D), and 2p
2 (1S) [symmetric configurations] and 2s3l, 2p3l−2s4l, and 2s5l−2p5l [asymmetric configurations] are distinguished. It is found that the contributions of doubly excited states with asymmetric configurations are dominant and symmetric configurations increasingly come into play with the increase of collision energy. The present results provide experimental benchmarks available for theoretical calculations.
Additional record of Tuponia Reuter (Heteroptera, Miridae, Phylinae) from Korea, with a new synonym and discussion on distribution
Authors: Min Suk Oh , Kim WonGun , Park Jihwan , Lee Seunghwan 
Published: May 2023

The genus Tuponia Reuter, 1875 belongs to the subfamily Phylinae and comprises 91 species worldwide. Before this study, only T. koreana Kim & Jung had been recorded from the Korean Peninsula.
Two species of Tuponia Reuter, 1910 are recognised from the Korean Peninsula including the first record of T. mongolica Drapolyuk, 1980. T. koreana Kim & Jung, 2021 is proposed as a junior synonym of T. chinensis Zheng & Li, 1992. The species is identified, based on the dorsal habitus and male and female genitalic structures. A brief discussion of the distribution of Korean Tuponia species also is presented.
Eradication programs against non-native pests and pathogens of woody plants in Europe: which factors influence their success or failure?
Authors: Branco Sofia , Douma Jacob C. , Brockerhoff Eckehard G. , Gomez-Gallego Mireia , Marcais Benoit , Prospero Simone , Franco José Carlos , Jactel Hervé , Branco Manuela 
Published: May 2023

When a non-native species succeeds in establishing in a new habitat, one of the possible responses is to attempt its eradication. In the present study, we analysed European eradication programmes against non-native pests and pathogens of woody plants (PPWP) from 1945 to date. Our main goal was to identify which factors affect the success of an eradication programme, reinforcing guidelines for future eradication of PPWP. Data on eradication campaigns were obtained from online databases, scientific and grey literature, and Plant Protection Organizations’ reports. Factors influencing eradication success for both arthropods and pathogens were analysed with LASSO regression and decision tree learning.
A total of 848 cases officially declared as eradication attempts were documented in our database (8-fold higher than previous reports). Both the number of programmes and their rate of success increased sharply over the last two decades. Only less than 10% of the non-native organisms affecting woody plants were targeted for attempted eradication despite the high economic and ecological impacts caused by some species for which no efforts were undertaken. Almost one-third of the officially declared cases of eradication concerned organisms that were still restricted to the material with which they were introduced. For these cases the success rate was 100%. The success rate of established species was only 50% for arthropods and 61% for pathogens. The spatial extent of the outbreak was the factor that most affected the outcome of eradication campaigns. The eradication success decreased abruptly above 100 ha for arthropods and 10 ha for pathogens. Additionally, other variables were shown to influence the outcome of eradication programmes, in particular the type of environment, with the highest eradication success rate found in nurseries and glasshouses, with successful outcomes increasing if quarantine measures were applied and when monitoring included asymptomatic plants. Particular species traits may reduce eradication success: parthenogenetic arthropods, saprotrophic pathogens, wind dispersal, the possibility to remain asymptomatic indefinitely, and the existence of resting spores or stages.
In conclusion, small affected areas, quick response, and efficient implementation of quarantine restrictions, together with particular species traits, may allow a high probability of eradication success. Preparedness at the country and European level would allow a larger number of target species to be included in future eradication programmes.
Un printemps agité : la Finlande, la Suède et l’OTAN
Authors: Clerc Louis 
Published: May 2023

Le conflit en Ukraine, résultant de la tentative d’invasion russe de cet État en février 2022, a eu des effets importants sur les équilibres géopolitiques européens. En Suède et en Finlande, deux pays nordiques ayant adopté à la fin des années 1990 des formes de non-alignement militaire, la guerre en Ukraine a relancé le débat sur une possible adhésion à l’OTAN. En quelques semaines, les deux États ont renoncé à leur non-alignement pour déposer ensemble une demande d’adhésion à l’alliance atlantique. L’article revient sur les débats concernant l’OTAN dans ces deux pays et expose la situation actuelle, marquée encore par les atermoiements hongrois et turcs pour ratifier les adhésions finlandaise et suédoise.
Le poème corona danois du tout début de la pandémie
Authors: Allouche Lea 
Published: May 2023

Peu après que le gouvernement danois ait décidé de faire entrer en vigueur un confinement du pays, des poèmes sur la Covid-19 apparaissent dans la presse et sur les réseaux sociaux. Le journal Information invite les poètes danois Marianne Larsen, Pia Tafdrup, Klaus Høeck, Peter Laugesen, Thomas Boberg et Morten Søndergaard à écrire un « poème corona ». Le premier poème est publié le premier jour du confinement, et durant les semaines qui suivent cinq autres poèmes sont publiés dans ce même journal. Les six poèmes ont beaucoup en commun : ils s’orientent vers d’autres œuvres littéraires pour décrire l’expérience de vivre dans un monde qui soudainement est devenu trop réel ou irréel. Ils attestent d’une nouvelle sensibilité d’un « nous » d’individus isolés, ils retravaillent le langage de la Covid-19 pour chercher s’il garde en lui quelques vérités sur la pandémie, et ils explorent à quoi ressemble la matérialité de ce langage sur les pages du poème, sa sonorité et la prononciation des mots, qui sont dans toutes les bouches. Dans cet article, j’analyserai les six poèmes dans leur contexte en m’appuyant sur le travail de Jonathan Culler sur la poésie et la société au moment d’une crise. Ensuite, je me pencherai sur le travail de Jahan Ramazani sur la poésie et le journal pour étudier le rôle de l’actualité dans le poème où le journal n’est pas seulement un moyen matériel où sont publiés ces poèmes mais également et avant tout la source du langage particulier dans les poèmes. Pour conclure, prenant comme point de départ la conceptualisation sur les phases de la littérature de crise d’Unni Langås, je m’interrogerai sur le devenir de ces poèmes corona écrits au tout début de la pandémie : seront-ils lus ? Si oui, de quelle manière ?
Synthesis and characterization of inclusion complex of -cyclodextrin and triazole picrate
Authors: Hichri S. , Matoussi N. , Abderrahim R. 
Published: May 2023

ABSTRACT. Inclusion complex between 3-amino-1,2,4-triazole picrate and β-cyclodextrin was synthesized in order to increase the picrate solubility. The complex was obtained by co-precipitation method and its stoichiometry is 1:1 (guest–host). The structure of picrate and complex has been established by UV, X-ray diffractometry powder spectra, TGA, DSC, IR, 1H NMR, and 13C NMR. The influence of the effect of pH on the complexation has been discussed. The value of apparent formation constant is 1.2 x 104.

KEY WORDS: Amino triazole, Picrate, Inclusion complex, pH
Bull. Chem. Soc. Ethiop. 2023, 37(4), 973-982.
DOI: https://dx.doi.org/10.4314/bcse.v37i4.13
Design, synthesis, and cytotoxic activity of some novel N-(substituted) benzamide derivatives bearing coumarin and 1-azocoumarin compounds
Authors: H. Al-Hazmi Ghaferah 
Published: May 2023

ABSTRACT. Among oxygen-containing heterocyclic compounds such as coumarin and azacoumarin derivatives, the scaffold has become an important construction motif for developing new drugs. Coumarin and its derivatives possess many types of biological activities and have been reported to show significant cytotoxic activity. N-(6,8-disubstituted coumarin-3-yl)benzamides (8a-c) namely (3-N-(benzoyl) aminocoumarin-6-ylmethyl acetate (8a); N-[6-(1-acetylpyrazol-3-yldiazineyl) coumarin-3-yl] benzamide (8b); N-(8-methoxy-6-bromo-coumarin-3-yl) benzamide (8c), were synthesized via a cyclocondensation reaction of 5-(chloromethyl)-2-hydroxybenzaldehyde (3), 5-(pyrazol-3-yl-diazineyl)-2-hydroxybenzaldehyde (4), and 5-bromo-3-methoxy- 2-hydroxybenzaldehyde (5) with N-benzoylglycine (7), in good yield. Treatment of compound 8c with ammonia in the presence of anhydrous potassium carbonate to yield N-(5-bromo-8-methoxy-1-azocoumarin-3-yl) benzamide (9). Compound (9) was acetylated with acetic anhydride to give N-(2-acetoxy-5-bromo-8-methoxyquinolin-3-yl) benzamide (10). N-(substituted coumarin and azacoumarin-3-yl) benzamides (8-10) were tested for their in vitro cytotoxic activity against (HepG2) cell line. Furthermore, DNA flow cytometry investigation over HepG2 cells indicated that compound 8a demonstrated arrest at G1/S stages of the cell cycle and induction of apoptosis by rising pre-G1 stage. Compound 8a displayed a significant tubulin polymerization inhibition.

KEY WORDS: Synthesis, Coumarin, Azacoumarin, Drugs, Cytotoxicity
Bull. Chem. Soc. Ethiop. 2023, 37(4), 1003-1019.
DOI: https://dx.doi.org/10.4314/bcse.v37i4.16
Synthesis and crystal structure of a mixed-ligand zinc(II) complex derived from ethyl (2,6-dimethylphenylcarbamoyl) formate and 1,10-phenanthroline
Authors: Madanhire Tatenda , Van Brecht Bernardus , Abrahams Abubak’r 
Published: May 2023

ABSTRACT. A mixed-ligand zinc(II) complex, [Zn(Hpma)(phen)Cl] (where Hpma– = N-(2,6-dimethylphenyl)oxamate and phen = 1,10-phenanthroline), has been prepared by the reaction of zinc chloride, ethyl (2,6-dimethylphenylcarbamoyl)formate (Hdmp) and 1,10-phenanthroline under basic conditions in dimethylformamide. The structure of the complex was characterised by elemental analysis, IR, 1H-NMR, UV-Vis absorption and X-ray crystallography. The metal complex crystallises in the monoclinic system (space group P21/c) and is composed of the five-coordinate zinc ion in a distorted spherical square pyramidal geometry. Stabilisation of single crystals occurs through hydrogen bonds and π-π stacking interactions.

KEY WORDS: Zinc(II), N-(2,6-Dimethylphenyl)oxamate, 1,10-Phenanthroline, Crystal structure, Hydrogen bonding, π-π Stacking, Mixed-ligand
Bull. Chem. Soc. Ethiop. 2023, 37(4), 891-900.
DOI: https://dx.doi.org/10.4314/bcse.v37i4.7
Flow velocity and implication on particle size of bottom sediment in the commodore channel lagos, southwestern nigeria
Authors: A Rabiu , A S Maigari 
Published: May 2023

Flow velocity generally influences the erosion, transport and deposition of sediments. Flow velocity and in relation to particle size distribution in the Commodore channel was investigated with the Acoustic doppler current profiler (ADCP), echosounder and veen van grab. Those equipment were deployed through a low draft survey boat to acquire acoustic and sediment data covering the study area. The ADCP measured the current velocity along fourteen established transect lines while twenty surface sediments samples were collected along the banks and center of the channel respectively. Sediment samples were analyzed for grain size distributions and mineralogicaly composition while the acoustics data were analyzed with Matlab software to produce velocity profiles for the channel area. The study aimed to determine the magnitude and direction of flow of water along the channel with a view to ascertain the sediment transport process. Results indicated no significant difference in flow velocities along the different channel points. The flow velocity was however slightly higher around the channel mouth than in mid and upper reaches of the channel. The flow velocities showed negative correlation of (– 0.54 and – 0.28) with the sediment characteristics indicating that the sediment particle size distributions is unrelated to the flow velocity. This anomaly in the equilibrium flow velocity suggest the impact of dredging and the continuous ebbing and flooding of tidal water which resulted to reworking of the sediment particle sizes prior to deposition. The sediment distributions were fine sand, moderately sorted, fine skewed with leptokurtic peaked. Significant fractions of the sediments were deposited in fluvial and shallow marine environments while a few were deposited in the beach and turbidity environment. Sediments and acoustic data interpreted from the study suggest that sediment supply to the area was by fluvial processes through the barrier lagoon drainage basin.
Book review
Authors: N Nwagbara Eucharia , N Ekwueme Barth 
Published: May 2023

In his usual characteristic manner, the author of this book Barth N. Ekwueme, erudite Professor of Mineralogy and Petrology, has written yet another though-provoking literary piece. This current book is a compendium of highlights of homilies he listened to over a period of time as a committed Catholic faithful. The book consists of seven broad lessons viz:

Lessons from Advent (4)
Lessons from the season of Christmas (4)
Lesson from the season of Lent (12)
Lesson from the season of Easter (11)
Lessons from ordinary Time (16)
Lessons from Special Feasts (19)
Lessons from Important Events (6)