bluuebunny/crossref_metadata_2025 huggingface dataset:
The challenges and strategies of Islamic school mentor teachers in implementing ELT lesson plans
Authors: Akmal Saiful , Fitriah Fitriah , Fadhilah Intan
Published: September 2022

The availability of the lesson plans as organized guidance for teachers is critical in achieving the objectives of English Language Teaching (ELT) in policy decisions, curriculum planning, and classroom implementations. However, it is unavoidable if teachers experience difficulties generating lesson plans, necessitating specific strategies to deal with the situation. This study aims to examine the challenges faced by state Islamic secondary school English mentor teachers in implementing lesson plans and the strategies they utilized to overcome those challenges. This study employed a qualitative research design utilizing data purposively gathered from the semi-structured interviews involving five English school mentor teachers from State Islamic Secondary School No. 4 in Banda Aceh. The findings revealed that teachers’ most significant challenges in implementing lesson plans were time constraints, format changes, administrative burdens, and students’ lack of interest. The study also found out that attending the MGMP (Musyawarah Guru Mata Pelajaran, or the Teachers Professional Development Forum), using a guidebook, asking for advice from colleagues, and using the internet as a learning resource are common strategies the teachers used in overcoming their challenges. It is expected that the impact of this study provides a practical and critical reflection to develop a more realistic and workable ELT lesson plan implementation for mentor teachers amidst their demanding roles and increased administrative responsibilities. This study also recommends that university/faculty administrators and lecturers be more attentive to courses related to lesson plan design, such as English Curriculum Design, English Course Design, and Micro Teaching.
Binz – Schul- und Exkursionsflora für die Schweiz - Bestimmungsschlüssel für die Gattung 341. Alchemílla L. (Frauenmantel, Taumantel, Silbermantel)
Authors: Lenzin Heiner , Heitz-Weniger Annekäthi
Published: September 2022

Der «Binz» war und ist einerseits ein kleines Lehrbuch und andererseits ein kompaktes Feld-Bestimmungsbuch mit bewährten Schlüsseln. In einem einführenden Kapitel werden die für eine exakte Bestimmung der Gefässpflanzen wichtigen morphologischen Begriffe erläutert und, wenn nötig, auch in Abbildungen gezeigt. Es folgen die Bestimmungsschlüssel, mit denen, oft mithilfe einer Lupe, Arten, Klein- und Unterarten bestimmt werden können.
Diese Neuauflage des «Binz» wurde vollständig der aktuellen Systematik angepasst. Gleichzeitig wurde darauf geachtet, bezüglich Systematik und Taxonomie eine Vereinheitlichung unter den Florenwerken der Schweiz zu erreichen. Des Weiteren wurden einige Korrekturen und kleinere Verbesserungen bei Schlüsseln und Diagnosen vorgenommen und Verbreitungsangaben aktualisiert.
Uji Aktivitas Antioksidan Ekstrak Etanol Daun Rosemary (Rosemarinus officinalis L.) dengan Metode DPPH dan FRAP serta Pengaplikasiannya sebagai Zat Aktif dalam Losion
Authors: Esati Ni Ketut , Jawa La Elisabeth Oriana , Lestari Gusti Ayu Dewi
Published: September 2022

Salah satu tanaman yang mempunyai nilai ekonomis tinggi yaitu tanaman rosemary (Rosemarinus officinalis L.).  Tanaman ini mempunyai aroma dan rasa yang khas dan banyak mengandung senyawa yang dapat dimanfaatkan sebagai antioksidan, antijamur, antivirus, antibakteri, antitumor, antitrombotik, dan antidepresan. Pemanfaatan tanaman rosemary terutama ekstrak daunnya dapat dilakukan dengan terlebih dahulu melakukan pengujian terhadap ekstrak tersebut, sehingga tujuan dari penelitian ini adalah melakukan pengujian kandungan metabolit sekunder, uji aktivitas antioksidan dengan metode DPPH dan FRAP, serta mengaplikasikannya sebagai zat aktif dalam produk lotion. Dari hasil penelitian ini didapatkan rendemen ekstrak etanol daun rosemary sebanyak 16,87%. Hasil pengujian ekstrak tersebut mengandung senyawa metabolit sekunder diantaranya alkaloid, flavonoid, tannin, dan triterpenoid, namun memberikan hasil yang negatif terhadap saponin. Uji aktivitas antioksidan dengan metode DPPH dan FRAP ekstrak menghasilkan nilai IC50 berturut-turut 10,68 ppm dan 51,84 ppm. Dengan demikian ekstrak etanol daun rosemary memiliki aktivitas antioksidan yang sangat kuat dengan pengujian metode DPPH dan aktivitas yang kuat dengan metode FRAP. Produk antioksidan sediaan topikal berupa lotion dengan zat aktif dari ekstrak etanol daun rosemary menghasilkan uji organoleptis yang baik.
Preparasi dan Karakteristik Floating Tablet Ekstrak Daun Jambu Biji (Psidium guajava L.) dengan Variasi Kombinasi Xanthan Gum dan HPMC
Authors: Andini Septia , Sa’diah Siti , Puspa Suci
Published: September 2022

Floating drug delivery system (FRDDS) is a new drug delivery system that is intended to prolong the time of drugs in the stomach. One form of the gastroretentive system is a floating tablet, which can float and stay in the stomach for some time. Preparations with this system are suitable for use in drugs that have an action on the stomach. Gastritis is defined as an inflammation or swelling of the inner lining of the stomach. Guava leaves are proven to have active ingredients that can act as anti-ulcers. This study aims to formulate floating tablets and determine the optimal combination of HPMC with xanthan gum in the formulation of floating tablets of guava leaf extract based on flotation testing and in vitro dissolution profiles. The extract was made using maceration method with 96% ethanol as solvent. The tablets were made in a number of 3 formulas using the wet granulation method. Each tablet weighed 500 mg with a combination of various types of HPMC K100M, HPMC K15M, HPMC K4M with xanthan gum as a floating agent. The formula produced the best tablet quality with a combination of HPMC K100M and xanthan gum as a floating agent. Based on the results of the in vitro dissolution profile, the drug release rate ranged from 23,604% - 26,846% with in 360 minutes (6 hours).
El monstruo en el hueco – Cartas de México DF y Medellín
Authors: Rubio Alffonso , Blas Rodríguez Ángel
Published: September 2022

Las crónicas de El monstruo en el hueco rescatan, con oportunidad y agudeza, dos géneros literarios que están en extinción: el informe de viajero y el medio epistolar. Un intercambio de cartas entre dos españoles, uno desde Ciudad de México y otro desde la ciudad de Medellín, donde aparece la visión del ojo ajeno, la opinión del visitante que, gozando del privilegio de ver por primera vez un lugar y sus gentes, puede dar razón de las diferencias que encuentra con otros lugares, en especial, con su lugar de origen. Es ese ojo ajeno, sensible a lo que la costumbre y la rutina no dejan ver, quien puede revelar al ciudadano asuntos propios que sólo perciben los extraños. En un cruce de cartas que se muestra innovador en un momento en que la tecnología de la red virtual ha convertido la correspondencia en un género del pasado, los autores de este libro lo retoman como medio de comunicación y explotan con sabiduría sus potenciales creativos. Hay en estas cartas de El monstruo en el hueco la atmósfera de intimidad, de cercanía, propia del estilo epistolar, siempre entre dos y siempre coqueteando con la intromisión de un tercero distinto al remitente o al destinatario. Crónicas para un público que va desde el científico social que espera la visión desprevenida del viajero inteligente, hasta el lector común que desea disfrutar de una buena prosa y de la pertinencia y originalidad de las historias que se narran. Dario Jaramillo Agudelo
LIMITED DIVERSITY IN RISK TREATMENT SELECTION IN PUBLIC INFRASTRUCTURE PROJECTS: A RATIONAL RESPONSE?
Authors: D. Vorgers  , B. de Groot  , M. van Buiten  , L. Volker
Published: September 2022

In public infrastructure projects, risks can emerge quickly due to its external uncertainties and interdependencies among a large number of stakeholders. Scholars still debate whether the current approach of risk management is dynamic enough to safeguard project objectives in such public environments. Because of little empirical evidence that explains how and why Project Management Teams (PMTs) select a specific risk treatment, we aim to characterize risk treatment selection by PMTs in public infrastructure projects. Based on document reviews and semi-structured interviews with PMT members and their executives of a Dutch project-oriented public infrastructure agency, it was found that the diversity in risk treatment selection is limited and risk treatment in public infrastructure projects focuses on controlling risk predominantly through preventive control measures. Although PMTs also intentionally control risk through preventive measures, the decision to do so is often implicitly taken and constitutes an unwitting routine that PMTs seem to have developed due to a risk-averse organizational culture. We conclude with providing directions to improve risk management practices and enable more diversity in risk treatment selection by PMTs in public infrastructure projects.
Assurance de protection juridique : quelle place pour la médiation ?
Authors: Nobs Judith
Published: September 2022

Longtemps méconnue, la médiation, comme mode alternatif de résolution de conflits, connaît actuellement un essor très important. Le désengorgement des tribunaux, la réduction des coûts et de la durée de procédure en constituent les principaux atouts. Ce n’est toutefois que très récemment que la médiation s’est imposée au sein de la protection juridique X comme faisant partie intégrante de son dispositif proposé aux assurés. Par définition, le juriste ou l’avocat ne cherche pas à comprendre la cause du conflit et les émotions qu’il génère mais tente, par tous les moyens, d’apporter une solution. En revanche, le médiateur se concentre précisément sur les affects et tente de faire émerger une solution chez les médiés en travaillant sur leur attitude collaborative. Ce travail permet de garantir une solution pérenne, rapide et peu coûteuse. Tout l’enjeu est de convaincre tant les collaborateurs de la protection juridique du bienfondé du processus proposé que les autres acteurs du pouvoir judiciaire. Le principe de confidentialité qui est la clé de voûte du processus de médiation implique que les activités du juriste et du médiateur soient dissociées. C’est ce qui explique que les entreprises de protection juridique ont de plus en plus recours à des structures de médiation indépendantes et dissociées financièrement parlant. Ce Cortica journal Club se permet de poser la question : « Assurance de protection juridique : quelle place pour la médiation ? » et tente d’y répondre.
Sex differences and symptom based gray and white matter densities in schizophrenia
Authors: Mancini Marïë Adham
Published: September 2022

We investigated the association between densities in gray matter (GMD) and white matter (WMD) phenotypes and positive (PS) and negative (NS) symptoms in 40 schizophrenia patients (SZ). Cerebral densities were compared with 41 normal controls (NC) matched for age and sex using voxel-based morphometry on T1-3T-MRI. We found decreased GMD in the anterior cingulate-temporal gyri and increased GMD in the posterior cingulate gyrus in SZ relative to NC. WMD reduction was found in the inferior frontal and posterior parietal regions in SZ relative to NC. GMD in the insula/caudate correlated with PS, while GMD in the middle frontal gyrus and cerebellum correlated with NS. WMD in the middle frontal and superior frontal regions correlated with PS and NS respectively. Invers correlations were found between GMD in the parietal lobe and the uvula with PS. An inverse correlation was found between GMD in the cerebellum and NS. Inverse correlation was also found in the WMD of the occipital region and superior frontal regions with PS and NS respectively. Comparison between male groups revealed decreased total GMD in male patients, while no differences were observed between female groups. These correlational findings suggest that symptom profiles in schizophrenia show unique GM/WM phenotypes.
L’impuissance apprise ou Learned Helplessness au service de l’apprentissage : Suis-je capable ?
Authors: Mühlemann Stéphane
Published: September 2022

Le but de ce “Cortica Incubateur” est de sensibiliser les intervenants psycho-sociaux, formateurs d’adultes ainsi que les apprenants à la compréhension et aux conséquences de l’impuissance apprise qui les limitent dans leurs comportements de manière inconsciente en générant un sentiment de résignation. Je souhaite développer un projet afin de le mettre en pratique par la suite : Outiller ces professionnels ainsi que les apprenants à travers les ateliers Go/Nogo. Le message à faire passer est, « non seulement tu peux faire des erreurs, mais en plus elles sont nécessaires pour apprendre. Le pouvoir d’apprendre de celles-ci est de s’auto-observer, pratiquer le pas de recul et prendre le contrôle de la situation ». L’impact souhaité auprès des intervenants ainsi que des apprenants est d’atteindre une prise de conscience; leur permettre de développer des attitudes favorables à l’apprentissage ; réduire les peurs ou les angoisses qui en découlent ; surmonter leurs biais et distorsions cognitifs ; développer leur motivation à l’apprentissage et repousser leurs limites.
PRESENCE D’UNE PRÉDISPOSITION : PREMIER ÉPISODE D’UNE SÉRIE DE HUIT ÉPISODES SUR LE CERVEAU
Authors: Fahim Fahmy Cherine
Published: September 2022

L’objectif du modèle PRESENCE est de mettre en lumière les connaissances sur le développement du cerveau au service des neurosciences de l’éducation. PRESENCE combine une exploration approfondie de l'organisation du cerveau avec une revue de la littérature et perspective théorico-pratique sur la façon dont il permet l'émergence d'états mentaux complexes. Habilement tissé ensemble, le résultat est une image unique du cerveau qui est enracinée dans la morphologie et le fonctionnement cellulaire par la prédisposition génétique/épigénétique, l’élagage synaptique, la neuroplasticité et la neurogenèse puis mise en mouvement par la dynamique des réseaux de neurones et leur synchronisation en passant par la conscience et le libre arbitre. PRESENCE est un modèle sur lequel le CAS en neuroscience de l’éducation s’est basé. Le premier épisode de cette série de huit épisodes nous fait voyager au cœur de la prédisposition génétique et épigénétique. Les connexions sont établies selon un plan génétiquement programmé mais leur maintien et leur qualité peuvent être largement régulés par l’activité neuronale et donc l’expérience. En intervenant auprès du jeune il faut garder à l’esprit le fait qu’on intervient auprès d’une structure cérébrale génétiquement et épigénétiquement complexe et imprévisible ; que nos interventions ont les capacités d’interagir avec cette structure et la modifier pour le meilleur ou pour le pire. Les études dans le domaine ainsi que les réflexions de l’auteure présentées dans cette mini-revue de la littérature mettent en lumière le rôle de l’environnent dans le tissage des réseaux de neurones de l’enfant. Tout particulièrement, les recherches en neurosciences soulignent l’impact de l’environnement dans le développement de l’Être en construction.
Une qualité de sommeil réduite chez les nourrissons est associée au co-sommeil et au stress parental pendant la pandémie de COVID-19
Authors: Minot Océane
Published: September 2022

Les habitudes de sommeil des enfants changent et se développent pour atteindre une certaine stabilité au cours de leur développement. Ces schémas de sommeil sont vulnérables aux facteurs biologiques, sociaux et environnementaux. Des études récentes se sont concentrées sur deux facteurs modulant le sommeil des nourrissons, à savoir le stress des parents et le co-sommeil. De même, les stresseurs contextuels ont un impact sur la relation entre le sommeil des nourrissons et la santé mentale des parents. Le confinement dû à la pandémie de COVID-19 est un stresseur contextuel vécu dans le monde entier. Cette étude examine les effets du confinement sur le sommeil des nourrissons, en contrôlant le stress des parents et les arrangements de sommeil des bébés. Nous avons recruté des parents de 352 nourrissons âgés de 0 à 36 mois pour répondre à un questionnaire en ligne. Nous avons utilisé le Brief Infant Sleep Questionnaire pour mesurer le sommeil des bébés, ainsi que le Perceived Stress Scale et le Well-Being Index pour le stress et le bien-être des parents. Nos résultats ont démontré que le stress parental était négativement associé à la qualité du sommeil des nourrissons. De plus, nous avons observé que les enfants qui dormaient avec leurs parents avaient une moins bonne qualité de sommeil que ceux qui dormaient seuls. Nous suggérons d'accroître la sensibilisation à la santé mentale, en particulier chez les parents, lors d'événements stressants de vie. De plus, nous recommandons une psychoéducation des parents sur les schémas normaux du sommeil des nourrissons.
The Value of a Life-Year and the Intuition of Universality
Authors: Fleurbaey Marc , Ponthiere Gregory
Published: September 2022

When considering the social valuation of a life-year, there is a conflict between two basic intuitions: on the one hand, the intuition of universality, according to which the value of an additional life-year should be universal, and, as such, should be invariant to the context considered; on the other hand, the intuition of complementarity, according to which the value of a life-year should depend on what this extra-life-year allows for, and, hence, on the quality of that life-year, because the quantity of life and the quality of life are complement to each other. This paper proposes three distinct accounts of the intuition of universality, and shows that those accounts either conflict with a basic monotonicity property, or lead to indifference with respect to how life-years are distributed within the population. Those results support the abandon of the intuition of universality. But abandoning the intuition of universality does not prevent a social evaluator from giving priority, when allocating life-years, to individuals with the lowest quality of life.
Study of Electrostatic Ion-Cyclotron Waves in Magnetosphere of Uranus
Authors: Pandey Rama S. , Kumar Mukesh
Published: September 2022

In this manuscript, the method of characteristics particle trajectories details used and the dispersion relation for the ionosphere of Uranus were being used to investigate electrostatic ion-cyclotron waves with parallel flow velocity shear in the presence of perpendicular inhomogeneous DC electric field and density gradient. The growth rate has been calculated using the dispersion relation. Electric fields parallel to the magnetic field transmit energy, mass, and momentum in the auroral regions of the planetary magnetosphere by accelerating charged particles to extremely high energies. The rate of heating of plasma species along and perpendicular to the magnetic field is also said to be influenced by the occurrence of ion cyclotron waves and a parallel electric field in the acceleration area.
Study of Structural, Elastic, Thermal and Transport Properties of Ternary X(X=Co, Rh and Ir)MnAs Obtained by DFT
Authors: Kadri Salim , Mohamed Tourab , Mahièddine Berkani , Rabie Amraoui , Zeyneb Bordjiba
Published: September 2022

The Density Functional Theory (DFT) with an approximation of generalised gradient is used for the study of elastic, thermodynamic and transport properties and for that of structural stability of ternary Half-Heuslers compounds X(X=Co, Rh and Ir)MnAs. This first predictive study of this compounds determines the mechanical properties such that the compression, shearing, Young modulla and Poisson coefficient without omitting the checking parameters of the nature of these compounds such that hardness, Zener anisotropic facto rand Cauchy pressure. The Pugh ratio and Poisson coefficient have allowed the identification of ductile nature of these compounds. The speed of sound and Debye temperature of these compounds has also been estimated from the elastic constants. The thermodynamic properties have been calculated as well for a pressure interval from zero to 25 GPa. The effect of chemical potential variation on Seebeck coefficient, electric, thermal and electronic conductivities, the power and merit factors have also been studied for different temperatures (300, 600, 900°K), so that these alloys can be better potential candidates for thermoelectric applications.
Characteristics and Optical Properties of Bi2Te2.45Se0.55 Thin Film
Authors: Salwa A.S. , El-Sayed Ahmed Azza
Published: September 2022

Thermally evaporated Bi2Te2.45Se0.55 thin films were examined for structural alterations and electrical conductivity. Crystallite size, micro-strain, and dislocations were all calculated using the XRD data. By using transmission electron microscopy, the morphology of thin films was investigated (TEM). The study was performed within a temperature range of (300 – 500) K. The electrical energy gap and the conductivity of the as-deposited and annealed (373, 473K) Bi2Te2.45Se0.55 films were measured. The obtained values are (0.27, 0.26, 0.24 eV) and 3.6×103, 3.7×103 and 4.1×103 ohm-1.cm-1 respectively. Hall coefficient, the mean free time, the diffusion coefficient of holes, and the diffusion length, charge carrier's concentration, charge carriers' scattering mechanism, and Hall mobility were also examined. The obtained values of the charge carrier's concentration are 2.12×1017 -2.73×1017 cm-3. The direct and indirect allowed energy gap decreased with increasing annealing temperature. The obtained values of indirect band gap and direct band gap ranges from 0.27- 0.24 eV and 0.375- 0.379 eV, respectively.
Computation of Structure and Electrical Resistivity of Liquid Na-Rb Alloys
Authors: Koireng R.R. , Agarwal P.C. , Gokhroo Alpana
Published: September 2022

The structure and electrical resistivity of Na1-xRbx binary alloys (where x = 0, 0.1, 0.2,…,1) are computed using Percus-Yevick (PY) equation, hard-sphere model and Faber-Ziman formula respectively. The partial structure factors and total structure factor are computed using hard-sphere model for Na1-xRbx. In the calculation of resistivity using Faber-Ziman formula, we have employed Ashcroft empty-core pseudo-potential and Hartree dielectric screening. Calculated values of resistivity are compared with the experimental results and other theoretical values reported in literature. It is found that the electrical resistivity calculated using Faber-Ziman formula for binary alloy Na1-xRbx is in good agreement with the values reported experimentally.
Enhanced Third Generation Semiconductor Material-Based Solar Cell Efficiency by Piezo-Phototronic Effect
Authors: Gyan Michael , Parbby Joseph , Botchey Francis E.
Published: September 2022

By applying the outward uniform strain on the non-centrosymmetric piezoelectric semiconductor, the polarization charges on the material surface are induced. Polarization charges are often generated within the crystals provided that the applied strain is non-uniform. The strain applied has an effect on electronic transport and can be utilized to modulate the properties of the material. The effect of multiway coupling between piezoelectricity, semiconductor transport properties, and photoexcitation results in piezo-phototronic effects. Recent studies have shown the piezoelectric and semiconductor properties of third-generation semiconductors have been used in photodetectors, LEDs, and nanogenerators. The third-generation piezoelectric semiconductor can be used in high-performance photovoltaic cells. A third-generation piezo-phototronic solar cell material is theoretically explored in this manuscript on the basis of a GaN metal-semiconductor interaction. This study aims to determine the effects of piezoelectric polarization on the electrical performance characteristics of this solar cell material. Performance parameters such as Power Conversion Efficiency, Fill Factors, I-V Characteristics, Open Circuit Voltage, and Maximum Output Power have been evaluated. The piezophototronic effect can enhance the open-circuit current voltage by 5.5 percent with an externally applied strain by 0.9 percent. The study will open a new window for the next generation of high-performance piezo-phototronic effects.
Influence of the Inert Gas Pressure on Intrinsic Stress in Diamond-Like Coating Deposited From Vacuum Arc Carbon Plasma
Authors: Kalinichenko Alexandr I. , Strel’nitskij Vladimir E.
Published: September 2022

Within the framework of the model of the nonlocal thermoelastic peak of low-energy ion, the formation of intrinsic stress in a carbon coating deposited from the vacuum arc plasma in the argon atmosphere is theoretically studied. It is shown that the flow of particles bombarding the deposited coating contains, along with C+ ions, also Ar+ ions involved in the formation of intrinsic stress in the coating. The flux density of Ar+ ions resulting from ionization losses of C+ ions passing through the argon atmosphere is proportional to both the flux density of C+ ions and the density (pressure) of argon. Expressions are obtained for the intrinsic stress in the deposited carbon coating depending on the bias potential on the substrate and the argon pressure for the cases of both constant and pulsed potentials. The analysis of the obtained expressions shows that the intrinsic stress in the carbon coating decrease with increasing argon pressure.
Boron Isotopic Ratio (δ11B) Measurements in Boron Carbide (B4C): Benchmarking Between SF-ICP-MS and PIGE Techniques
Authors: Kutnii Dmytro , Vanzha Stanislav , Burdeynyi Dmytro , Levenets Volodymyr , Omelnik O. , Shchur A.
Published: September 2022

The results of comparing the analytical capabilities of Sector Field Inductively Coupled Plasma Mass Spectrometry (SF-ICP-MS) and Particle Induced Gamma-ray Emission (PIGE) methods for determining the 11B/10B isotope ratio in boron carbide samples (B4C) are presented. The following nuclear reactions excited by protons on the stable boron isotopes are considered: 10B(p,aγ)7Be, 10B(p,pγ)7Be and 11B(p,γ)12C. The optimum proton energy range was determined to be within 550 to 600 keV, while the energies of the induced gamma-radiation that can be used for quantitative estimation of the boron isotopes were 429 keV and 4439 keV for the isotopes 10B and 11B, respectively. Considering the uncertainties of measurements, the data for the 11B/10B isotope ratios, measured by the SF‑ICP‑MS and PIGE methods, are found to correlate with each other; yet they are characterized by a systematic bias. The uncertainty of measurements by the PIGE method was somewhat higher in comparison with SF-ICP-MS, and ranged from ± 4.1 % to ± 4.3 %, and from ± 1.1 % to ± 3.5 %, respectively.
NIAT ADOPSI TEKNOLOGI ONLINE GROCERY SHOPPING: EKSTENSI TECHNOLOGY ACCEPTANCE MODEL
Authors: Sitorus Hotna Marina , Vania Christa
Published: September 2022

Penelitian ini bertujuan untuk mengkaji faktor yang memengaruhi niat konsumen dalam mengadopsi layanan Online Grocery Shopping (OGS). OGS adalah layanan yang disediakan oleh toserba yang memungkinkan konsumen berbelanja kebutuhan sehari-hari secara daring melalui situs web. Meski layanan OGS menjanjikan banyak manfaat, tingkat penggunaannya masih belum memuaskan. Pengembangan model penelitian dilakukan dengan mengaplikasikan Technology Acceptance Model (TAM) yang diekstensi dengan kompatibilitas, visibilitas, pengaruh sosial, dan risiko. Model penelitian diuji pada konsumen sebuah toserba yang telah memiliki layanan OGS namun kesulitan mencapai target jumlah penggunanya. Pengumpulan data dilakukan dengan metode survei menggunakan kuesioner daring. 108 data digunakan untuk menguji model pengukuran dan model struktural berdasarkan metode PLS-SEM. Penelitian ini menemukan bahwa niat adopsi layanan OGS secara signifikan dipengaruhi oleh persepsi kemanfaatan dan persepsi kemudahan pakai. Berdasarkan analisis pengaruh total ditemukan bahwa niat adopsi dipengaruhi oleh kompatibilitas, persepsi kemanfaatan, persepsi kemudahan pakai, pengaruh sosial dan persepsi risiko. Penelitian ini juga merumuskan sejumlah rekomendasi bagi pengelola toserba untuk dapat meningkatkan jumlah konsumen yang mau menggunakan layanan OGS.
Turist Rehberlerinin Algılanan Marka Kişiliği, Turist Duyguları, Turist Memnuniyeti ve Turist Sadakati Arasındaki Yapısal İlişkilerin İncelenmesi (Investigation of The Structural Relations Between Tourist Guides Perceived Brand Personality, Tourist Emotions, Tourist Satisfaction and Tourist Loyalty)
Authors: Demir Beste , Türkmen Serkan
Published: September 2022

Turizm faaliyetlerinin ana unsurlarından biri olan turist rehberleri turizm sektöründe önemli bir role sahiptirler. Ancak turist rehberleri de verdikleri hizmetler doğrultusunda birbirleri ile rekabet içerisindedirler. Dolayısıyla sektörde tercih edilebilmeleri için turist rehberlerinin marka kişiler haline gelmeleri gerekmektedir. Markanın en önemli bileşenlerinden biri de marka kişiliğidir. Dolayısıyla bu çalışmanın temel amacı turist rehberlerinin marka kişiliklerinin belirlenmesidir. Aynı zamanda tur sonrasında rehberlerin algılanan marka kişilikleri turist duyguları, turist memnuniyeti ve turist sadakati arasındaki yapısal ilişkiler incelenmiştir. Araştırmada en az bir kez turist rehberi eşliğinde tura katılan yerli turistlere 15 Nisan -17 Mayıs tarihleri arasında çevrim içi anket uygulanmıştır. 431 katılımcının yanıtladığı çalışmanın bulgularına göre; rehberin marka kişiliğinin sadakat üzerinde bir etkisine rastlanamamıştır. Ancak rehberin marka kişiliğinin memnuniyet ve turist duyguları üzerinde; turist duygularının memnuniyet ve sadakat üzerinde, memnuniyetin ise sadakat üzerinde anlamlı ve olumlu bir etki yarattığı sonucuna ulaşılmıştır. Bu çalışmada rehberlerin algılanan marka kişiliğinin turist sadakatinin önemli bir belirleyicisi olduğu ve turist rehberlerinin marka kişiliklerinin geliştirilmesi gerektiği ortaya koyulmaya çalışılmıştır.
Elektronik Spor Turizmi: Elektronik Spor İzleyicileri Üzerine Bir Araştırma (Electronic Sports Tourism: A Study on Electronic Sports Audiences)
Authors: Yıldırım Ümit , Tamer Elif Tuba
Published: September 2022

Elektronik spor, çevrimiçi oyun ve karşılaşmalarla birlikte fiziksel olarak düzenlenen etkinlikleri de kapsayan çok boyutlu bir kavramdır. Elektronik spor izleyicilerinin yakından takip ettikleri etkinlikler, ev sahibi şehirlere sosyal ve ekonomik açıdan önemli katkılar sağlama potansiyeline sahiptir. Etkinliklere katılan izleyiciler, diğer tüm turistler gibi konaklama, yeme-içme, ulaşım, eğlence imkanlarından yararlanmaktadır. Bu durum elektronik spor etkinliklerinin turizm sektörü açısından değerlendirilmesini gerekli kılmaktadır. Çalışma, elektronik spor izleyicilerinin bir turizm faaliyeti olarak elektronik spor etkinliklerine katılmaya ilişkin görüşlerinin tespit edilmesine odaklanmaktadır. Çalışmanın verileri, Twitch canlı yayınlarını takip eden 397 izleyiciden anket tekniğiyle elde edilmiştir. Çalışmadan elde edilen sonuçlara göre, katılımcıların, %68,3’ünün elektronik spor etkinliklerine katılmayı planladıkları ve %84,9’unun etkinliklerin düzenlendiği bölgedeki ilgi çekici mekanları ziyaret etme niyetinde oldukları tespit edilmiştir. Ayrıca katılımcıların %85,6’sı elektronik spor etkinliğinde diğer izleyiciler ve katılımcılarla sosyal etkileşimi önemli gördüklerini belirtmişlerdir.
Turizm Eğitimi Alan Üniversite Öğrencilerinin Kişilik Özellikleri, Bilinçli Farkındalığı ve Sektöre Bağlılıkları Arasındaki İlişki (The Relationship Between Personality Traits, Mindfulness and Sectoral Commitment of University Students Studying Tourism)
Authors: Gül Kudret , Gül Melike
Published: September 2022

Üniversite eğitimi, öğrencilerin kendilerini seçtikleri mesleğe hazırladıkları ve evrensel değerler ile bütünleşmeye başladıkları bir süreçtir. Bu noktadan hareketle çalışmada turizm eğitimi alan üniversite öğrencilerinin kişilik özellikleri, bilinçli farkındalık düzeyleri ve turizm sektörüne bağlılığı arasındaki ilişki belirlenmeye çalışılmıştır. Araştırma, Balıkesir Üniversitesi’ne bağlı iki Meslek Yüksek Okulu ile iki fakültenin Turizm ve Otel İşletmeciliği, Gastronomi ve Mutfak Sanatları, Rekreasyon Yönetimi ve Turist Rehberliği bölümlerinde öğrenim gören toplam 255 öğrencinin katılımıyla gerçekleştirilmiştir. Veriler, 2022 yılı Nisan-Mayıs ayında anket yöntemi ile elde edilmiştir. Araştırma sonuçları, turizm eğitimi alan öğrencilerin kişilik özellikleri ile bilinçli farkındalığı arasında güçlü bir ilişki olduğunu göstermektedir. Kişilik özelliği ile sektöre bağlılık ve bilinçli farkındalık ile sektöre bağlılık arasındaki ilişki ise orta derecede güçlü bir ilişkidir. Ayrıca bulgular, kız öğrencilerin erkek öğrencilere kıyasla sektöre bağlılığının daha yüksek olduğunu, öğrencilerin yaşı arttıkça sektöre bağlılığın azaldığı ve lisans eğitimi alan öğrencilerin önlisans öğrencilerine kıyasla bilinçli farkındalığının ve sektöre bağlılığının daha yüksek olduğunu da ortaya koymaktadır.
Attitudes and practices of postnatal mothers and their accompanying relatives to breastfeeding in public at a university hospital in Turkey
Authors: Satılmış İlkay Güngör , Yılmaz Büşra , Acar Zehra
Published: September 2022

Background: Mothers face social and cultural obstacles to breastfeeding in public. Aims: This study evaluated the attitudes and practices of Turkish women regarding breastfeeding in public. Methods: This cross-sectional, descriptive study was carried out in a university hospital among 200 new postnatal mothers and their 200 accompanying female relatives. Data were obtained using a questionnaire and the Infant Feeding Attitude Scale (IIFAS). Results: Respondents mostly believed that there was nothing wrong with breastfeed in public and almost half of them thought the society would perceive breastfeeding in public negatively. Some 56.5% of the mothers who had previously had children and 37.2% of their relatives had breastfed in public before. The acceptance of breastfeeding in public increased “if the breast is covered” and “if a private space is provided”. The mean total IIFAS score was 61.53 (6.19) in the mothers and 60.65 (6.69) in their relatives. Based on IIFAS, the mothers (92.0%) and their relatives (89.5%) were neutral to breastfeeding, but age, education, employment status, and opinions regarding breastfeeding in public affected the IIFAS scores. IIFAS score was significantly higher in women who had breastfed in public before. Conclusion: Although the women knew the importance of breastfeeding, they mostly did not breastfeed in public because of the cultural implications and the lack of private breastfeeding areas. Awareness-raising, availability of breastfeeding rooms, and education of supporting relatives can help the increase willingness of mothers to breastfeed even if it is in public.
European Student eID Framework Proposal
Authors: Nealon Sinead , Fridell Tor , McKenna Eugene , Lanza Jorge
Published: September 2022

The European Campus Card Association (ECCA)1 recently completed a research project on the development of a ‘Proposal for a Trusted Student Identification Framework’2. This involved collaboration with the relevant stakeholders including: HEIs, Students and Service Providers. The purpose of the project was to engage in a process of dialogue to seek out their views and opinions on the needs and requirements of a trusted Student eID Credential that supports cross-border services.

The outcome from the project provides an important foundation to enable the establishment of a European student eID and how it can be a key enabler for secure cross-border electronic transactions, which is central to the Digital Single Market policy. In addition, there is strong evidence of support for EU policies on student mobility enabling access to academic and non-academic services across Europe. The project has identified the stakeholders’ requirements, potential barriers and provides a series of recommendations that are fundamental to its successful development and integration.

The recommendations resulting from the various activities of the Student eID Framework project provide a sequence of important requirements for consideration and evaluation, and include the following: Campus Card/eID; Mobile Devices; Security, Trust and User Authentication; eIDAS; HEI & Services Providers requirements and standards; Legal issues and GDPR; Supporting European Strategy and Initiatives; Engagement and Collaboration with the EU and Stakeholders; Marketing, Dissemination and Promotion of a European Student eID. The project has established a strong collaborative partnership with the relevant stakeholders and provided valuable knowledge and information on the needs and requirements of a European Student eID Credential that supports cross- border services. The outcomes have identified many potential solutions to the obstacles that may be encountered in the task of implementing a student eID by 2025.
Effects of Covid-19 Induced Spike in Food Prices on Urban Households’ Food Security in Northwest, Nigeria
Authors: IDAKWO Danıel Acheneje , OLADİMEJİ Yusuf Usman , AYANLERE Ayo Fatimoh , HUSSAINI Aisha Simbiat
Published: September 2022

The purpose of the study is to assess the effects of COVID-19 induced spike in food prices on urban households’ food security status in Northwest, Nigeria. Primary data through structured questionnaires were collected for the study. A multistage random sampling resulted into sample size of 240 urban households (samples). Primary data was used for the study. The results of variables used for the fixed effect regression shows that the mean price was ₦200, average household size was 7 persons per household, the average age and education was 45 and 10 years, respectively. The results of price trend before and during COVID-19 pandemic shows significant differences in all the four (4) cereal crops investigated. The result of the food security levels of households reveals that majority of the households (95%) were food secure before the outbreak of COVID-19 while the food secure households dropped to78% during COVID-19. The fixed-effects regression shows that the coefficients of price (1.05), household size (0.02), COVID-19 loan (-0.134e-7) and household income (0.015) were found to have statistically significant effects on food security status of households. The findings from this study will help guide governments at various levels in Nigeria in policy formulation towards ameliorating the sufferings of households in the study area. In addition, NGOs and other concerned local and international organisations can rely on this study as a guide for distributing COVID-19 relief find and further research.
APPLICATION OF TDS TECHNIQUE TO MULTIPHASE FLOW
Authors: Escobar Freddy Humberto , Montealegre M. Matilde
Published: September 2022

Although, the radial difussivitity equation has been solved for a single-fluid phase flow, in some cases more than one phase flows from the reservoir to the well; therefore, the single-phase solution has been previously extended to multiphase flow without losing a significant degree of accuracy. Practically, there exist two ways of dealing with multiphase flow: The Perrine method, Perrine (1956) which basically replaces the single-phase compressibility by the multiphase compressibility so that each fluid is analyzed separately using the concept of mobility. The other one is the use of pseudofunctions which have been found to be the best option. The TDS technique has been widely applied to a variety of scenarios. It has been even tested to successfully work on condensate systems with the use of pseudofunctions, Jokhio, Tiab and Escobar (2002). However, equations for estimation of phase permeability, skin factor and drainage area has not neither presented nor tested. In this article, we present new versions of a set of equations of the TDS technique to be applied to multiphase flow following the Perrine method along with a previously presented way of estimation of the absolute relative permeability. We successfully applied the proposed equations to synthetic and field examples.
NUMERICAL SIMULATION FOR CYCLIC STEAM INJECTION AT SANTA CLARA FIELD
Authors: Rodríguez Edwin , Barrios Wilson , Sandoval Roy , Santos Nicolás , Cortes Ingrid
Published: September 2022

This article presents the methodology used and the results obtained in the construction, match and prediction of the first thermal composition simulation model done in Colombia by employing advanced thermal process commercial software, globally recognized because of its effectiveness in modeling these types of processes (CMG-STARS, 2005). The Santa Clara and Palermo fields were modeled and an excellent history match was achieved. All in all 28 wells and 17 years of production were matched.  Two production scenes were proposed. The first involved primary production from existing wells, in other words: primary production; and a second escen where all the wells in the field are converted into injectors and producers, to simulate cyclic steam injection. This injection process included a series of sensitivity studies for several of the parameters involved in this technology, such as: pressure and temperature injection, time and rate of injection, heat injected, soaking period, steam quality, and injection cycles. This sensitivity study was focused on optimizing the processes to obtain the maximum end recovery possible.  The information entered into the simulator was validated by laboratory tests developed at the Instituto Colombiano del Petróleo (ICP). Among the tests performed the following were assessed: rock compressibility, relative permeability curve behavior at different temperatures, formation sensitivity to injection fluids, DRX analysis and residual saturation of crude oil for steam injection. The aforementioned results are documented in this paper.
ESTIMATION OF CRITICAL PROPERTIES OF TYPICALLY COLOMBIAN VACUUM RESIDUE SARA FRACTIONS
Authors: Yovani León Adán , Parra Martha , Grosso Jorge Luis
Published: September 2022

Knowledge of critical properties and the acentric factor is required in phase-equilibrium studies in different extraction processes conducted in the petroleum industry, particularly in the solvent deasphalting process. Correlations to estimate critical temperature, critical pressure and acentric factor values of SARA (Saturated, Aromatic, Resin, and Asphaltene) fractions of vacuum residue from the Barrancabermeja Refinery were determined from their physical properties such as density (molar volume) and molecular weight. New correlations for critical property prediction were evaluated using model molecules and the Avaullee and Satou's group contribution methods, respectively.
BASEMENT CONFIGURATION OF THE NORTHWESTERN SOUTH AMERICA - CARIBBEAN MARGIN FROM RECENT GEOPHYSICAL DATA
Authors: Cerón John F. , Kellogg James N. , Ojeda Germán Y.
Published: September 2022

The oceanic nature of the crust in northern Colombia (underlying the Lower Magdalena Basins) has been postulated by different authors as a northern extension of the Cretaceous, mafic and ultramafic rocks accreted to the western margin of northwest Colombia (in the Western Cordillera and Baudo range). Localized, small outcrops of oceanic affinity rocks seem to support this hypothesis. However, geophysical data do not support this northern extension, but clearly mark the boundary between the collisional Panamá terrane with northern South America and the over thrusting of the latter on top of the obliquely convergent Caribbean plate.  We produced maps to basement and Moho topography by integrated modeling of gravity, magnetics, seismic reflection surveys and well data from northwest Colombia and the southwestern Caribbean. In areas with good seismic coverage, the basement under the Lower Magdalena Basins (LMB) is represented by a clear reflector. In areas where seismic data shows poor imaging or is absent, we use a back stripping methodology to model first the sedimentary section, with known densities, composition and geometry controlled by oil wells and high quality seismic data, and then the deeper section. 2,5D gravity and magnetics modeling results in an initial Moho that can be extended to the entire region based on the control of available seismic refraction points. This controlled Moho provides the basis for basement modeling for the whole area and this sequence is iterated for several sections across the region.  Our results indicate that the crust under northern Colombia is continental to thinned continental (transitional) in nature, with densities between 2,6 and 2,7 g/cm3. Our model also requires a dense wedge of sediments (density 2,5 g/cm3) at the base of the modern fold belt, which may represent a fossil sedimentary wedge attached to the continental margin. This wedge may have served as a backstop for the modern fold belt. The gravity modeling does not require oceanic crust to form the basement in the Sinú and San Jacinto fold belts as previously suggested. Discrete layers and thin slivers of oceanic sediments and basement could have been scrapped off the incoming plate and thrusted into an accretionary mélange, and eventually exposed at the surface, as seen in the Mulatos, Chalan and Cansona locations.  The shape of the continental wedge / oceanic crust boundary resembles that of a very low angle/flat subduction zone (ß angle between 2º to 3º), and is interpreted here as a low angle over thrusting of northern South America riding in a highly oblique direction over the underlying Caribbean plate. The map to basement depth obtained during this study forms the basis for basin analysis, oil maturation and evolutionary studies of the region. As an example, we apply our map to a flexural analysis of the LMB.
Eliptik Dişli Tasarımı, İmalatı, Analizi ve Eliptik Dişlilerin Endüstriyel Uygulamaları
Authors: PAZARKAYA İbrahim , YAZAR Mehmet , ÖZDEMİR Ahmet
Published: September 2022

Eliptik dişliler üzerine yapılan çalışmaların diş profillerinin tasarımı üzerine yoğunlaştığı ve prototip imalatlarına yönelik araştırmaların arttığı görülmektedir. Eliptik dişlilerin diş profillerinin silindirik dişliler gibi özdeş olmayacağından hareketle geliştirilen eliptik dişlinin diş profili; kramayer veya silindirik düz dişli formlu kesicinin bölüm elipsi üzerinde yuvarlanma yöntemine uygun olarak evolvent eğriye sahip diş yanaklarının şekillendirilmesiyle elde edilmektedir. Eliptik dişlilerin imalatında CNC tel erozyon tezgahlarından faydalanmanın yaygınlaştığı, bununla birlikte azdırma tezgâhları için elektronik dişli kutuları geliştirilerek eliptik dişlilerin standart modülde imalatının da mümkün olduğu tespit edilmiştir. Eliptik dişli çiftleri farklı makine ve teçhizatta kullanılmakta, özellikle eliptik dişli çiftine sahip debimetre ve pompaların yaygınlaştığı görülmektedir. Enerji verimliliğinin son derece önem kazandığı günümüzde, yüksek akışkan miktarlarının doğru ve hassas ölçülmesi ve işletmelerin akışkan transferindeki kayıplarının giderilmesi de gerekmektedir. Bu genel değerlendirme çalışmasında eliptik dişlilerin tasarımı, geleneksel ve geleneksel olmayan imal usulleri ile imalatı, dayanım ve titreşim analizleri ve literatürde yer alan muhtelif endüstriyel uygulamaları gözen geçirilmiş ve çalışmanın ortak bulguları elde edilmiştir. Eliptik dişlilerin yakın gelecekte bünyesinde mekanik kısım barındıran birçok akıllı ürünün vazgeçilmez bir organı olacağı öngörülmektedir.